* [PATCH 6.18 001/675] platform/x86/intel-uncore-freq: Fix current_freq_khz after CPU hotplug
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
@ 2026-07-30 14:05 ` Greg Kroah-Hartman
2026-07-30 14:05 ` [PATCH 6.18 002/675] bpf: Fix ld_{abs,ind} failure path analysis in subprogs Greg Kroah-Hartman
` (678 subsequent siblings)
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From: Greg Kroah-Hartman @ 2026-07-30 14:05 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Srinivas Pandruvada,
Ilpo Järvinen, Guixiong Wei, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Guixiong Wei <weiguixiong@bytedance.com>
commit 6b63520ed14b17bbe9c2103debbd2152dde1fba3 upstream.
When the last CPU of a legacy uncore die goes offline,
uncore_freq_remove_die_entry() clears control_cpu. During CPU hotplug
re-add, uncore_freq_add_entry() still populates sysfs attributes before
assigning the new control CPU. As a result, the current frequency read
returns -ENXIO and current_freq_khz is omitted from the recreated sysfs
group.
Assign control_cpu before the initial read paths and before
create_attr_group() so sysfs recreation uses the new online CPU. If
sysfs creation fails, restore control_cpu to -1 to keep the error path
state consistent.
Fixes: 4d73c6772ab7 ("platform/x86: intel-uncore-freq: Conditionally create attribute for read frequency")
Cc: stable@vger.kernel.org
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Link: https://patch.msgid.link/20260602020752.3126-1-weiguixiong@bytedance.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Guixiong Wei <weiguixiong@bytedance.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
.../x86/intel/uncore-frequency/uncore-frequency-common.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/platform/x86/intel/uncore-frequency/uncore-frequency-common.c b/drivers/platform/x86/intel/uncore-frequency/uncore-frequency-common.c
index 65897fae17dfba..6091b617480ff6 100644
--- a/drivers/platform/x86/intel/uncore-frequency/uncore-frequency-common.c
+++ b/drivers/platform/x86/intel/uncore-frequency/uncore-frequency-common.c
@@ -274,15 +274,20 @@ int uncore_freq_add_entry(struct uncore_data *data, int cpu)
sprintf(data->name, "package_%02d_die_%02d", data->package_id, data->die_id);
}
+ /*
+ * Set the control CPU before any read path so entry recreation after CPU
+ * hotplug can populate read-only attributes from the new online CPU.
+ */
+ data->control_cpu = cpu;
uncore_read(data, &data->initial_min_freq_khz, UNCORE_INDEX_MIN_FREQ);
uncore_read(data, &data->initial_max_freq_khz, UNCORE_INDEX_MAX_FREQ);
ret = create_attr_group(data, data->name);
if (ret) {
+ data->control_cpu = -1;
if (data->domain_id != UNCORE_DOMAIN_ID_INVALID)
ida_free(&intel_uncore_ida, data->instance_id);
} else {
- data->control_cpu = cpu;
data->valid = true;
}
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 002/675] bpf: Fix ld_{abs,ind} failure path analysis in subprogs
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
2026-07-30 14:05 ` [PATCH 6.18 001/675] platform/x86/intel-uncore-freq: Fix current_freq_khz after CPU hotplug Greg Kroah-Hartman
@ 2026-07-30 14:05 ` Greg Kroah-Hartman
2026-07-30 14:05 ` [PATCH 6.18 003/675] selftests/bpf: Add tests for ld_{abs,ind} failure path " Greg Kroah-Hartman
` (677 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:05 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, STAR Labs SG, Daniel Borkmann,
Alexei Starovoitov, Philo Lu, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Daniel Borkmann <daniel@iogearbox.net>
commit ee861486e377edc55361c08dcbceab3f6b6577bd upstream.
Usage of ld_{abs,ind} instructions got extended into subprogs some time
ago via commit 09b28d76eac4 ("bpf: Add abnormal return checks."). These
are only allowed in subprograms when the latter are BTF annotated and
have scalar return types.
The code generator in bpf_gen_ld_abs() has an abnormal exit path (r0=0 +
exit) from legacy cBPF times. While the enforcement is on scalar return
types, the verifier must also simulate the path of abnormal exit if the
packet data load via ld_{abs,ind} failed.
This is currently not the case. Fix it by having the verifier simulate
both success and failure paths, and extend it in similar ways as we do
for tail calls. The success path (r0=unknown, continue to next insn) is
pushed onto stack for later validation and the r0=0 and return to the
caller is done on the fall-through side.
Fixes: 09b28d76eac4 ("bpf: Add abnormal return checks.")
Reported-by: STAR Labs SG <info@starlabs.sg>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/r/20260408191242.526279-2-daniel@iogearbox.net
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
[ Dropped visit_abnormal_return_insn changes: depends on 7.0 symbols from
e40f5a6bf88a ("bpf: correct stack liveness for tail calls");
Hunk1: adapted IS_ERR/PTR_ERR to !branch/-EFAULT to match push_stack()
NULL-on-failure convention. ]
Signed-off-by: Philo Lu <lulie@linux.alibaba.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
kernel/bpf/verifier.c | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c
index d1c51d812f3b66..463455180a8e35 100644
--- a/kernel/bpf/verifier.c
+++ b/kernel/bpf/verifier.c
@@ -17402,6 +17402,23 @@ static int check_ld_abs(struct bpf_verifier_env *env, struct bpf_insn *insn)
mark_reg_unknown(env, regs, BPF_REG_0);
/* ld_abs load up to 32-bit skb data. */
regs[BPF_REG_0].subreg_def = env->insn_idx + 1;
+ /*
+ * See bpf_gen_ld_abs() which emits a hidden BPF_EXIT with r0=0
+ * which must be explored by the verifier when in a subprog.
+ */
+ if (env->cur_state->curframe) {
+ struct bpf_verifier_state *branch;
+
+ mark_reg_scratched(env, BPF_REG_0);
+ branch = push_stack(env, env->insn_idx + 1, env->insn_idx, false);
+ if (!branch)
+ return -EFAULT;
+ mark_reg_known_zero(env, regs, BPF_REG_0);
+ err = prepare_func_exit(env, &env->insn_idx);
+ if (err)
+ return err;
+ env->insn_idx--;
+ }
return 0;
}
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 003/675] selftests/bpf: Add tests for ld_{abs,ind} failure path in subprogs
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
2026-07-30 14:05 ` [PATCH 6.18 001/675] platform/x86/intel-uncore-freq: Fix current_freq_khz after CPU hotplug Greg Kroah-Hartman
2026-07-30 14:05 ` [PATCH 6.18 002/675] bpf: Fix ld_{abs,ind} failure path analysis in subprogs Greg Kroah-Hartman
@ 2026-07-30 14:05 ` Greg Kroah-Hartman
2026-07-30 14:05 ` [PATCH 6.18 004/675] netfilter: nft_counter: serialize reset with spinlock Greg Kroah-Hartman
` (676 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:05 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Daniel Borkmann, Alexei Starovoitov,
Philo Lu, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Daniel Borkmann <daniel@iogearbox.net>
commit e0fcb42bc6f41bab2895757d6610616b3820eff7 upstream.
Extend the verifier_ld_ind BPF selftests with subprogs containing
ld_{abs,ind} and craft the test in a way where the invalid register
read is rejected in the fixed case. Also add a success case each,
and add additional coverage related to the BTF return type enforcement.
# LDLIBS=-static PKG_CONFIG='pkg-config --static' ./vmtest.sh -- ./test_progs -t verifier_ld_ind
[...]
#611/1 verifier_ld_ind/ld_ind: check calling conv, r1:OK
#611/2 verifier_ld_ind/ld_ind: check calling conv, r1 @unpriv:OK
#611/3 verifier_ld_ind/ld_ind: check calling conv, r2:OK
#611/4 verifier_ld_ind/ld_ind: check calling conv, r2 @unpriv:OK
#611/5 verifier_ld_ind/ld_ind: check calling conv, r3:OK
#611/6 verifier_ld_ind/ld_ind: check calling conv, r3 @unpriv:OK
#611/7 verifier_ld_ind/ld_ind: check calling conv, r4:OK
#611/8 verifier_ld_ind/ld_ind: check calling conv, r4 @unpriv:OK
#611/9 verifier_ld_ind/ld_ind: check calling conv, r5:OK
#611/10 verifier_ld_ind/ld_ind: check calling conv, r5 @unpriv:OK
#611/11 verifier_ld_ind/ld_ind: check calling conv, r7:OK
#611/12 verifier_ld_ind/ld_ind: check calling conv, r7 @unpriv:OK
#611/13 verifier_ld_ind/ld_abs: subprog early exit on ld_abs failure:OK
#611/14 verifier_ld_ind/ld_ind: subprog early exit on ld_ind failure:OK
#611/15 verifier_ld_ind/ld_abs: subprog with both paths safe:OK
#611/16 verifier_ld_ind/ld_ind: subprog with both paths safe:OK
#611/17 verifier_ld_ind/ld_abs: reject void return subprog:OK
#611/18 verifier_ld_ind/ld_ind: reject void return subprog:OK
#611 verifier_ld_ind:OK
Summary: 1/18 PASSED, 0 SKIPPED, 0 FAILED
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/r/20260408191242.526279-4-daniel@iogearbox.net
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Philo Lu <lulie@linux.alibaba.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
.../selftests/bpf/progs/verifier_ld_ind.c | 142 ++++++++++++++++++
1 file changed, 142 insertions(+)
diff --git a/tools/testing/selftests/bpf/progs/verifier_ld_ind.c b/tools/testing/selftests/bpf/progs/verifier_ld_ind.c
index c925ba9a2e74c2..09e81b99eecb4e 100644
--- a/tools/testing/selftests/bpf/progs/verifier_ld_ind.c
+++ b/tools/testing/selftests/bpf/progs/verifier_ld_ind.c
@@ -107,4 +107,146 @@ __naked void ind_check_calling_conv_r7(void)
: __clobber_all);
}
+/*
+ * ld_{abs,ind} subprog that always sets r0=1 on the success path.
+ * bpf_gen_ld_abs() emits a hidden exit with r0=0 when the load helper
+ * fails. The verifier must model this failure return so that callers
+ * account for r0=0 as a possible return value.
+ */
+__naked __noinline __used
+static int ldabs_subprog(void)
+{
+ asm volatile (
+ "r6 = r1;"
+ ".8byte %[ld_abs];"
+ "r0 = 1;"
+ "exit;"
+ :
+ : __imm_insn(ld_abs, BPF_LD_ABS(BPF_W, 0))
+ : __clobber_all);
+}
+
+__naked __noinline __used
+static int ldind_subprog(void)
+{
+ asm volatile (
+ "r6 = r1;"
+ "r7 = 0;"
+ ".8byte %[ld_ind];"
+ "r0 = 1;"
+ "exit;"
+ :
+ : __imm_insn(ld_ind, BPF_LD_IND(BPF_W, BPF_REG_7, 0))
+ : __clobber_all);
+}
+
+SEC("socket")
+__description("ld_abs: subprog early exit on ld_abs failure")
+__failure __msg("R9 !read_ok")
+__naked void ld_abs_subprog_early_exit(void)
+{
+ asm volatile (
+ "call ldabs_subprog;"
+ "if r0 != 0 goto l_exit_%=;"
+ "r0 = r9;"
+ "l_exit_%=:"
+ "r0 = 0;"
+ "exit;"
+ ::: __clobber_all);
+}
+
+SEC("socket")
+__description("ld_ind: subprog early exit on ld_ind failure")
+__failure __msg("R9 !read_ok")
+__naked void ld_ind_subprog_early_exit(void)
+{
+ asm volatile (
+ "call ldind_subprog;"
+ "if r0 != 0 goto l_exit_%=;"
+ "r0 = r9;"
+ "l_exit_%=:"
+ "r0 = 0;"
+ "exit;"
+ ::: __clobber_all);
+}
+
+SEC("socket")
+__description("ld_abs: subprog with both paths safe")
+__success
+__naked void ld_abs_subprog_both_paths_safe(void)
+{
+ asm volatile (
+ "call ldabs_subprog;"
+ "r0 = 0;"
+ "exit;"
+ ::: __clobber_all);
+}
+
+SEC("socket")
+__description("ld_ind: subprog with both paths safe")
+__success
+__naked void ld_ind_subprog_both_paths_safe(void)
+{
+ asm volatile (
+ "call ldind_subprog;"
+ "r0 = 0;"
+ "exit;"
+ ::: __clobber_all);
+}
+
+/*
+ * ld_{abs,ind} in subprogs require scalar (int) return type in BTF.
+ * A test with void return must be rejected.
+ */
+__naked __noinline __used
+static void ldabs_void_subprog(void)
+{
+ asm volatile (
+ "r6 = r1;"
+ ".8byte %[ld_abs];"
+ "r0 = 1;"
+ "exit;"
+ :
+ : __imm_insn(ld_abs, BPF_LD_ABS(BPF_W, 0))
+ : __clobber_all);
+}
+
+SEC("socket")
+__description("ld_abs: reject void return subprog")
+__failure __msg("LD_ABS is only allowed in functions that return 'int'")
+__naked void ld_abs_void_subprog_reject(void)
+{
+ asm volatile (
+ "call ldabs_void_subprog;"
+ "r0 = 0;"
+ "exit;"
+ ::: __clobber_all);
+}
+
+__naked __noinline __used
+static void ldind_void_subprog(void)
+{
+ asm volatile (
+ "r6 = r1;"
+ "r7 = 0;"
+ ".8byte %[ld_ind];"
+ "r0 = 1;"
+ "exit;"
+ :
+ : __imm_insn(ld_ind, BPF_LD_IND(BPF_W, BPF_REG_7, 0))
+ : __clobber_all);
+}
+
+SEC("socket")
+__description("ld_ind: reject void return subprog")
+__failure __msg("LD_ABS is only allowed in functions that return 'int'")
+__naked void ld_ind_void_subprog_reject(void)
+{
+ asm volatile (
+ "call ldind_void_subprog;"
+ "r0 = 0;"
+ "exit;"
+ ::: __clobber_all);
+}
+
char _license[] SEC("license") = "GPL";
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 004/675] netfilter: nft_counter: serialize reset with spinlock
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (2 preceding siblings ...)
2026-07-30 14:05 ` [PATCH 6.18 003/675] selftests/bpf: Add tests for ld_{abs,ind} failure path " Greg Kroah-Hartman
@ 2026-07-30 14:05 ` Greg Kroah-Hartman
2026-07-30 14:05 ` [PATCH 6.18 005/675] netfilter: nft_quota: use atomic64_xchg for reset Greg Kroah-Hartman
` (675 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:05 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Florian Westphal, Brian Witte,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Brian Witte <brianwitte@mailfence.com>
[ Upstream commit 779c60a5190c42689534172f4b49e927c9959e4e ]
Add a global static spinlock to serialize counter fetch+reset
operations, preventing concurrent dump-and-reset from underrunning
values.
The lock is taken before fetching the total so that two parallel
resets cannot both read the same counter values and then both
subtract them.
A global lock is used for simplicity since resets are infrequent.
If this becomes a bottleneck, it can be replaced with a per-net
lock later.
Fixes: bd662c4218f9 ("netfilter: nf_tables: Add locking for NFT_MSG_GETOBJ_RESET requests")
Fixes: 3d483faa6663 ("netfilter: nf_tables: Add locking for NFT_MSG_GETSETELEM_RESET requests")
Fixes: 3cb03edb4de3 ("netfilter: nf_tables: Add locking for NFT_MSG_GETRULE_RESET requests")
Suggested-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Brian Witte <brianwitte@mailfence.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/netfilter/nft_counter.c | 20 ++++++++++++++++----
1 file changed, 16 insertions(+), 4 deletions(-)
diff --git a/net/netfilter/nft_counter.c b/net/netfilter/nft_counter.c
index 0d70325280cc57..169ae93688bcc5 100644
--- a/net/netfilter/nft_counter.c
+++ b/net/netfilter/nft_counter.c
@@ -32,6 +32,9 @@ struct nft_counter_percpu_priv {
static DEFINE_PER_CPU(struct u64_stats_sync, nft_counter_sync);
+/* control plane only: sync fetch+reset */
+static DEFINE_SPINLOCK(nft_counter_lock);
+
static inline void nft_counter_do_eval(struct nft_counter_percpu_priv *priv,
struct nft_regs *regs,
const struct nft_pktinfo *pkt)
@@ -148,13 +151,25 @@ static void nft_counter_fetch(struct nft_counter_percpu_priv *priv,
}
}
+static void nft_counter_fetch_and_reset(struct nft_counter_percpu_priv *priv,
+ struct nft_counter_tot *total)
+{
+ spin_lock(&nft_counter_lock);
+ nft_counter_fetch(priv, total);
+ nft_counter_reset(priv, total);
+ spin_unlock(&nft_counter_lock);
+}
+
static int nft_counter_do_dump(struct sk_buff *skb,
struct nft_counter_percpu_priv *priv,
bool reset)
{
struct nft_counter_tot total;
- nft_counter_fetch(priv, &total);
+ if (unlikely(reset))
+ nft_counter_fetch_and_reset(priv, &total);
+ else
+ nft_counter_fetch(priv, &total);
if (nla_put_be64(skb, NFTA_COUNTER_BYTES, cpu_to_be64(total.bytes),
NFTA_COUNTER_PAD) ||
@@ -162,9 +177,6 @@ static int nft_counter_do_dump(struct sk_buff *skb,
NFTA_COUNTER_PAD))
goto nla_put_failure;
- if (reset)
- nft_counter_reset(priv, &total);
-
return 0;
nla_put_failure:
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 005/675] netfilter: nft_quota: use atomic64_xchg for reset
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (3 preceding siblings ...)
2026-07-30 14:05 ` [PATCH 6.18 004/675] netfilter: nft_counter: serialize reset with spinlock Greg Kroah-Hartman
@ 2026-07-30 14:05 ` Greg Kroah-Hartman
2026-07-30 14:05 ` [PATCH 6.18 006/675] netfilter: nf_tables: revert commit_mutex usage in reset path Greg Kroah-Hartman
` (674 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:05 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Pablo Neira Ayuso, Brian Witte,
Florian Westphal, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Brian Witte <brianwitte@mailfence.com>
[ Upstream commit 30c4d7fb59ac4c8d7fa7937df11eed10b368fa11 ]
Use atomic64_xchg() to atomically read and zero the consumed value
on reset, which is simpler than the previous read+sub pattern and
doesn't require lock serialization.
Fixes: bd662c4218f9 ("netfilter: nf_tables: Add locking for NFT_MSG_GETOBJ_RESET requests")
Fixes: 3d483faa6663 ("netfilter: nf_tables: Add locking for NFT_MSG_GETSETELEM_RESET requests")
Fixes: 3cb03edb4de3 ("netfilter: nf_tables: Add locking for NFT_MSG_GETRULE_RESET requests")
Suggested-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Brian Witte <brianwitte@mailfence.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/netfilter/nft_quota.c | 13 +++++++------
1 file changed, 7 insertions(+), 6 deletions(-)
diff --git a/net/netfilter/nft_quota.c b/net/netfilter/nft_quota.c
index df0798da2329b9..cb6c0e04ff6755 100644
--- a/net/netfilter/nft_quota.c
+++ b/net/netfilter/nft_quota.c
@@ -140,11 +140,16 @@ static int nft_quota_do_dump(struct sk_buff *skb, struct nft_quota *priv,
u64 consumed, consumed_cap, quota;
u32 flags = priv->flags;
- /* Since we inconditionally increment consumed quota for each packet
+ /* Since we unconditionally increment consumed quota for each packet
* that we see, don't go over the quota boundary in what we send to
* userspace.
*/
- consumed = atomic64_read(priv->consumed);
+ if (reset) {
+ consumed = atomic64_xchg(priv->consumed, 0);
+ clear_bit(NFT_QUOTA_DEPLETED_BIT, &priv->flags);
+ } else {
+ consumed = atomic64_read(priv->consumed);
+ }
quota = atomic64_read(&priv->quota);
if (consumed >= quota) {
consumed_cap = quota;
@@ -160,10 +165,6 @@ static int nft_quota_do_dump(struct sk_buff *skb, struct nft_quota *priv,
nla_put_be32(skb, NFTA_QUOTA_FLAGS, htonl(flags)))
goto nla_put_failure;
- if (reset) {
- atomic64_sub(consumed, priv->consumed);
- clear_bit(NFT_QUOTA_DEPLETED_BIT, &priv->flags);
- }
return 0;
nla_put_failure:
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 006/675] netfilter: nf_tables: revert commit_mutex usage in reset path
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (4 preceding siblings ...)
2026-07-30 14:05 ` [PATCH 6.18 005/675] netfilter: nft_quota: use atomic64_xchg for reset Greg Kroah-Hartman
@ 2026-07-30 14:05 ` Greg Kroah-Hartman
2026-07-30 14:05 ` [PATCH 6.18 007/675] drm/virtio: fix deadlock in display_info_cb by removing hotplug from dequeue worker Greg Kroah-Hartman
` (673 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:05 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, syzbot+ff16b505ec9152e5f448,
Brian Witte, Florian Westphal, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Brian Witte <brianwitte@mailfence.com>
[ Upstream commit 7f261bb906bf527c4a6e2a646e2d5f3679f2a8bc ]
It causes circular lock dependency between commit_mutex, nfnl_subsys_ipset
and nlk_cb_mutex when nft reset, ipset list, and iptables-nft with '-m set'
rule run at the same time.
Previous patches made it safe to run individual reset handlers concurrently
so commit_mutex is no longer required to prevent this.
Fixes: bd662c4218f9 ("netfilter: nf_tables: Add locking for NFT_MSG_GETOBJ_RESET requests")
Fixes: 3d483faa6663 ("netfilter: nf_tables: Add locking for NFT_MSG_GETSETELEM_RESET requests")
Fixes: 3cb03edb4de3 ("netfilter: nf_tables: Add locking for NFT_MSG_GETRULE_RESET requests")
Link: https://lore.kernel.org/all/aUh_3mVRV8OrGsVo@strlen.de/
Reported-by: <syzbot+ff16b505ec9152e5f448@syzkaller.appspotmail.com>
Closes: https://syzkaller.appspot.com/bug?extid=ff16b505ec9152e5f448
Signed-off-by: Brian Witte <brianwitte@mailfence.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/netfilter/nf_tables_api.c | 248 ++++++----------------------------
1 file changed, 42 insertions(+), 206 deletions(-)
diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c
index 0842916c19f503..c82c16bd4257e4 100644
--- a/net/netfilter/nf_tables_api.c
+++ b/net/netfilter/nf_tables_api.c
@@ -3908,23 +3908,6 @@ static int nf_tables_dump_rules(struct sk_buff *skb,
return skb->len;
}
-static int nf_tables_dumpreset_rules(struct sk_buff *skb,
- struct netlink_callback *cb)
-{
- struct nftables_pernet *nft_net = nft_pernet(sock_net(skb->sk));
- int ret;
-
- /* Mutex is held is to prevent that two concurrent dump-and-reset calls
- * do not underrun counters and quotas. The commit_mutex is used for
- * the lack a better lock, this is not transaction path.
- */
- mutex_lock(&nft_net->commit_mutex);
- ret = nf_tables_dump_rules(skb, cb);
- mutex_unlock(&nft_net->commit_mutex);
-
- return ret;
-}
-
static int nf_tables_dump_rules_start(struct netlink_callback *cb)
{
struct nft_rule_dump_ctx *ctx = (void *)cb->ctx;
@@ -3944,16 +3927,10 @@ static int nf_tables_dump_rules_start(struct netlink_callback *cb)
return -ENOMEM;
}
}
- return 0;
-}
-
-static int nf_tables_dumpreset_rules_start(struct netlink_callback *cb)
-{
- struct nft_rule_dump_ctx *ctx = (void *)cb->ctx;
-
- ctx->reset = true;
+ if (NFNL_MSG_TYPE(cb->nlh->nlmsg_type) == NFT_MSG_GETRULE_RESET)
+ ctx->reset = true;
- return nf_tables_dump_rules_start(cb);
+ return 0;
}
static int nf_tables_dump_rules_done(struct netlink_callback *cb)
@@ -4019,6 +3996,8 @@ static int nf_tables_getrule(struct sk_buff *skb, const struct nfnl_info *info,
u32 portid = NETLINK_CB(skb).portid;
struct net *net = info->net;
struct sk_buff *skb2;
+ bool reset = false;
+ char *buf;
if (info->nlh->nlmsg_flags & NLM_F_DUMP) {
struct netlink_dump_control c = {
@@ -4032,47 +4011,16 @@ static int nf_tables_getrule(struct sk_buff *skb, const struct nfnl_info *info,
return nft_netlink_dump_start_rcu(info->sk, skb, info->nlh, &c);
}
- skb2 = nf_tables_getrule_single(portid, info, nla, false);
- if (IS_ERR(skb2))
- return PTR_ERR(skb2);
-
- return nfnetlink_unicast(skb2, net, portid);
-}
-
-static int nf_tables_getrule_reset(struct sk_buff *skb,
- const struct nfnl_info *info,
- const struct nlattr * const nla[])
-{
- struct nftables_pernet *nft_net = nft_pernet(info->net);
- u32 portid = NETLINK_CB(skb).portid;
- struct net *net = info->net;
- struct sk_buff *skb2;
- char *buf;
-
- if (info->nlh->nlmsg_flags & NLM_F_DUMP) {
- struct netlink_dump_control c = {
- .start= nf_tables_dumpreset_rules_start,
- .dump = nf_tables_dumpreset_rules,
- .done = nf_tables_dump_rules_done,
- .module = THIS_MODULE,
- .data = (void *)nla,
- };
-
- return nft_netlink_dump_start_rcu(info->sk, skb, info->nlh, &c);
- }
-
- if (!try_module_get(THIS_MODULE))
- return -EINVAL;
- rcu_read_unlock();
- mutex_lock(&nft_net->commit_mutex);
- skb2 = nf_tables_getrule_single(portid, info, nla, true);
- mutex_unlock(&nft_net->commit_mutex);
- rcu_read_lock();
- module_put(THIS_MODULE);
+ if (NFNL_MSG_TYPE(info->nlh->nlmsg_type) == NFT_MSG_GETRULE_RESET)
+ reset = true;
+ skb2 = nf_tables_getrule_single(portid, info, nla, reset);
if (IS_ERR(skb2))
return PTR_ERR(skb2);
+ if (!reset)
+ return nfnetlink_unicast(skb2, net, portid);
+
buf = kasprintf(GFP_ATOMIC, "%.*s:%u",
nla_len(nla[NFTA_RULE_TABLE]),
(char *)nla_data(nla[NFTA_RULE_TABLE]),
@@ -6332,6 +6280,10 @@ static int nf_tables_dump_set(struct sk_buff *skb, struct netlink_callback *cb)
nla_nest_end(skb, nest);
nlmsg_end(skb, nlh);
+ if (dump_ctx->reset && args.iter.count > args.iter.skip)
+ audit_log_nft_set_reset(table, cb->seq,
+ args.iter.count - args.iter.skip);
+
rcu_read_unlock();
if (args.iter.err && args.iter.err != -EMSGSIZE)
@@ -6347,26 +6299,6 @@ static int nf_tables_dump_set(struct sk_buff *skb, struct netlink_callback *cb)
return -ENOSPC;
}
-static int nf_tables_dumpreset_set(struct sk_buff *skb,
- struct netlink_callback *cb)
-{
- struct nftables_pernet *nft_net = nft_pernet(sock_net(skb->sk));
- struct nft_set_dump_ctx *dump_ctx = cb->data;
- int ret, skip = cb->args[0];
-
- mutex_lock(&nft_net->commit_mutex);
-
- ret = nf_tables_dump_set(skb, cb);
-
- if (cb->args[0] > skip)
- audit_log_nft_set_reset(dump_ctx->ctx.table, cb->seq,
- cb->args[0] - skip);
-
- mutex_unlock(&nft_net->commit_mutex);
-
- return ret;
-}
-
static int nf_tables_dump_set_start(struct netlink_callback *cb)
{
struct nft_set_dump_ctx *dump_ctx = cb->data;
@@ -6613,8 +6545,13 @@ static int nf_tables_getsetelem(struct sk_buff *skb,
{
struct netlink_ext_ack *extack = info->extack;
struct nft_set_dump_ctx dump_ctx;
+ int rem, err = 0, nelems = 0;
+ struct net *net = info->net;
struct nlattr *attr;
- int rem, err = 0;
+ bool reset = false;
+
+ if (NFNL_MSG_TYPE(info->nlh->nlmsg_type) == NFT_MSG_GETSETELEM_RESET)
+ reset = true;
if (info->nlh->nlmsg_flags & NLM_F_DUMP) {
struct netlink_dump_control c = {
@@ -6624,7 +6561,7 @@ static int nf_tables_getsetelem(struct sk_buff *skb,
.module = THIS_MODULE,
};
- err = nft_set_dump_ctx_init(&dump_ctx, skb, info, nla, false);
+ err = nft_set_dump_ctx_init(&dump_ctx, skb, info, nla, reset);
if (err)
return err;
@@ -6635,75 +6572,21 @@ static int nf_tables_getsetelem(struct sk_buff *skb,
if (!nla[NFTA_SET_ELEM_LIST_ELEMENTS])
return -EINVAL;
- err = nft_set_dump_ctx_init(&dump_ctx, skb, info, nla, false);
+ err = nft_set_dump_ctx_init(&dump_ctx, skb, info, nla, reset);
if (err)
return err;
nla_for_each_nested(attr, nla[NFTA_SET_ELEM_LIST_ELEMENTS], rem) {
- err = nft_get_set_elem(&dump_ctx.ctx, dump_ctx.set, attr, false);
- if (err < 0) {
- NL_SET_BAD_ATTR(extack, attr);
- break;
- }
- }
-
- return err;
-}
-
-static int nf_tables_getsetelem_reset(struct sk_buff *skb,
- const struct nfnl_info *info,
- const struct nlattr * const nla[])
-{
- struct nftables_pernet *nft_net = nft_pernet(info->net);
- struct netlink_ext_ack *extack = info->extack;
- struct nft_set_dump_ctx dump_ctx;
- int rem, err = 0, nelems = 0;
- struct nlattr *attr;
-
- if (info->nlh->nlmsg_flags & NLM_F_DUMP) {
- struct netlink_dump_control c = {
- .start = nf_tables_dump_set_start,
- .dump = nf_tables_dumpreset_set,
- .done = nf_tables_dump_set_done,
- .module = THIS_MODULE,
- };
-
- err = nft_set_dump_ctx_init(&dump_ctx, skb, info, nla, true);
- if (err)
- return err;
-
- c.data = &dump_ctx;
- return nft_netlink_dump_start_rcu(info->sk, skb, info->nlh, &c);
- }
-
- if (!nla[NFTA_SET_ELEM_LIST_ELEMENTS])
- return -EINVAL;
-
- if (!try_module_get(THIS_MODULE))
- return -EINVAL;
- rcu_read_unlock();
- mutex_lock(&nft_net->commit_mutex);
- rcu_read_lock();
-
- err = nft_set_dump_ctx_init(&dump_ctx, skb, info, nla, true);
- if (err)
- goto out_unlock;
-
- nla_for_each_nested(attr, nla[NFTA_SET_ELEM_LIST_ELEMENTS], rem) {
- err = nft_get_set_elem(&dump_ctx.ctx, dump_ctx.set, attr, true);
+ err = nft_get_set_elem(&dump_ctx.ctx, dump_ctx.set, attr, reset);
if (err < 0) {
NL_SET_BAD_ATTR(extack, attr);
break;
}
nelems++;
}
- audit_log_nft_set_reset(dump_ctx.ctx.table, nft_base_seq(info->net), nelems);
-
-out_unlock:
- rcu_read_unlock();
- mutex_unlock(&nft_net->commit_mutex);
- rcu_read_lock();
- module_put(THIS_MODULE);
+ if (reset)
+ audit_log_nft_set_reset(dump_ctx.ctx.table, nft_base_seq(net),
+ nelems);
return err;
}
@@ -8567,19 +8450,6 @@ static int nf_tables_dump_obj(struct sk_buff *skb, struct netlink_callback *cb)
return skb->len;
}
-static int nf_tables_dumpreset_obj(struct sk_buff *skb,
- struct netlink_callback *cb)
-{
- struct nftables_pernet *nft_net = nft_pernet(sock_net(skb->sk));
- int ret;
-
- mutex_lock(&nft_net->commit_mutex);
- ret = nf_tables_dump_obj(skb, cb);
- mutex_unlock(&nft_net->commit_mutex);
-
- return ret;
-}
-
static int nf_tables_dump_obj_start(struct netlink_callback *cb)
{
struct nft_obj_dump_ctx *ctx = (void *)cb->ctx;
@@ -8596,16 +8466,10 @@ static int nf_tables_dump_obj_start(struct netlink_callback *cb)
if (nla[NFTA_OBJ_TYPE])
ctx->type = ntohl(nla_get_be32(nla[NFTA_OBJ_TYPE]));
- return 0;
-}
-
-static int nf_tables_dumpreset_obj_start(struct netlink_callback *cb)
-{
- struct nft_obj_dump_ctx *ctx = (void *)cb->ctx;
-
- ctx->reset = true;
+ if (NFNL_MSG_TYPE(cb->nlh->nlmsg_type) == NFT_MSG_GETOBJ_RESET)
+ ctx->reset = true;
- return nf_tables_dump_obj_start(cb);
+ return 0;
}
static int nf_tables_dump_obj_done(struct netlink_callback *cb)
@@ -8667,42 +8531,16 @@ nf_tables_getobj_single(u32 portid, const struct nfnl_info *info,
static int nf_tables_getobj(struct sk_buff *skb, const struct nfnl_info *info,
const struct nlattr * const nla[])
{
- u32 portid = NETLINK_CB(skb).portid;
- struct sk_buff *skb2;
-
- if (info->nlh->nlmsg_flags & NLM_F_DUMP) {
- struct netlink_dump_control c = {
- .start = nf_tables_dump_obj_start,
- .dump = nf_tables_dump_obj,
- .done = nf_tables_dump_obj_done,
- .module = THIS_MODULE,
- .data = (void *)nla,
- };
-
- return nft_netlink_dump_start_rcu(info->sk, skb, info->nlh, &c);
- }
-
- skb2 = nf_tables_getobj_single(portid, info, nla, false);
- if (IS_ERR(skb2))
- return PTR_ERR(skb2);
-
- return nfnetlink_unicast(skb2, info->net, portid);
-}
-
-static int nf_tables_getobj_reset(struct sk_buff *skb,
- const struct nfnl_info *info,
- const struct nlattr * const nla[])
-{
- struct nftables_pernet *nft_net = nft_pernet(info->net);
u32 portid = NETLINK_CB(skb).portid;
struct net *net = info->net;
struct sk_buff *skb2;
+ bool reset = false;
char *buf;
if (info->nlh->nlmsg_flags & NLM_F_DUMP) {
struct netlink_dump_control c = {
- .start = nf_tables_dumpreset_obj_start,
- .dump = nf_tables_dumpreset_obj,
+ .start = nf_tables_dump_obj_start,
+ .dump = nf_tables_dump_obj,
.done = nf_tables_dump_obj_done,
.module = THIS_MODULE,
.data = (void *)nla,
@@ -8711,18 +8549,16 @@ static int nf_tables_getobj_reset(struct sk_buff *skb,
return nft_netlink_dump_start_rcu(info->sk, skb, info->nlh, &c);
}
- if (!try_module_get(THIS_MODULE))
- return -EINVAL;
- rcu_read_unlock();
- mutex_lock(&nft_net->commit_mutex);
- skb2 = nf_tables_getobj_single(portid, info, nla, true);
- mutex_unlock(&nft_net->commit_mutex);
- rcu_read_lock();
- module_put(THIS_MODULE);
+ if (NFNL_MSG_TYPE(info->nlh->nlmsg_type) == NFT_MSG_GETOBJ_RESET)
+ reset = true;
+ skb2 = nf_tables_getobj_single(portid, info, nla, reset);
if (IS_ERR(skb2))
return PTR_ERR(skb2);
+ if (!reset)
+ return nfnetlink_unicast(skb2, net, NETLINK_CB(skb).portid);
+
buf = kasprintf(GFP_ATOMIC, "%.*s:%u",
nla_len(nla[NFTA_OBJ_TABLE]),
(char *)nla_data(nla[NFTA_OBJ_TABLE]),
@@ -10030,7 +9866,7 @@ static const struct nfnl_callback nf_tables_cb[NFT_MSG_MAX] = {
.policy = nft_rule_policy,
},
[NFT_MSG_GETRULE_RESET] = {
- .call = nf_tables_getrule_reset,
+ .call = nf_tables_getrule,
.type = NFNL_CB_RCU,
.attr_count = NFTA_RULE_MAX,
.policy = nft_rule_policy,
@@ -10084,7 +9920,7 @@ static const struct nfnl_callback nf_tables_cb[NFT_MSG_MAX] = {
.policy = nft_set_elem_list_policy,
},
[NFT_MSG_GETSETELEM_RESET] = {
- .call = nf_tables_getsetelem_reset,
+ .call = nf_tables_getsetelem,
.type = NFNL_CB_RCU,
.attr_count = NFTA_SET_ELEM_LIST_MAX,
.policy = nft_set_elem_list_policy,
@@ -10130,7 +9966,7 @@ static const struct nfnl_callback nf_tables_cb[NFT_MSG_MAX] = {
.policy = nft_obj_policy,
},
[NFT_MSG_GETOBJ_RESET] = {
- .call = nf_tables_getobj_reset,
+ .call = nf_tables_getobj,
.type = NFNL_CB_RCU,
.attr_count = NFTA_OBJ_MAX,
.policy = nft_obj_policy,
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 007/675] drm/virtio: fix deadlock in display_info_cb by removing hotplug from dequeue worker
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (5 preceding siblings ...)
2026-07-30 14:05 ` [PATCH 6.18 006/675] netfilter: nf_tables: revert commit_mutex usage in reset path Greg Kroah-Hartman
@ 2026-07-30 14:05 ` Greg Kroah-Hartman
2026-07-30 14:05 ` [PATCH 6.18 008/675] fs/proc/task_mmu: fix make_uffd_wp_huge_pte() prot-update race Greg Kroah-Hartman
` (672 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:05 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Dmitry Osipenko, Ryosuke Yasuoka,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Ryosuke Yasuoka <ryasuoka@redhat.com>
[ Upstream commit d1b894c5bbb3fee0012bd14356286dc2384e8213 ]
A probe-time deadlock can occur between the dequeue worker and
drm_client_register(). During probe, drm_client_register() holds
clientlist_mutex and calls the fbdev hotplug callback, which triggers an
atomic commit that ends up sleeping in virtio_gpu_queue_ctrl_sgs()
waiting for virtqueue space. The dequeue worker that would free that
space calls virtio_gpu_cmd_get_display_info_cb(), which invokes
drm_kms_helper_hotplug_event() -> drm_client_dev_hotplug(), attempting
to acquire the same clientlist_mutex. Since wake_up() is only called
after the resp_cb loop, the probe thread is never woken and both threads
deadlock.
Fix this by removing the hotplug notification from
virtio_gpu_cmd_get_display_info_cb(). The display data (outputs[i].info)
is still updated synchronously in the callback.
For the init path, drm_client_register() already fires an initial
hotplug when the client is registered, which picks up the connector
state updated by display_info_cb.
For the runtime config_changed path, add a wait_event_timeout() in
config_changed_work_func() so that display_info_cb updates the connector
data before the hotplug notification is sent. Also replace
drm_helper_hpd_irq_event() with drm_kms_helper_hotplug_event() since
virtio-gpu never calls drm_kms_helper_poll_init() and thus
drm_helper_hpd_irq_event() always returns false without doing anything.
Fixes: 27655b9bb9f0 ("drm/client: Send hotplug event after registering a client")
Closes: https://syzkaller.appspot.com/bug?id=d6dd6f86d3aaf7eebe7406e45c1c6e549453f224
Closes: https://syzkaller.appspot.com/bug?id=908bd910da5dd79b88de4cf7baf376cc873a922e
Suggested-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Signed-off-by: Ryosuke Yasuoka <ryasuoka@redhat.com>
Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Link: https://patch.msgid.link/20260713-virtiogpu_syzbot-v2-1-2958fa37d46d@redhat.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/virtio/virtgpu_kms.c | 5 ++++-
drivers/gpu/drm/virtio/virtgpu_vq.c | 3 ---
2 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/virtio/virtgpu_kms.c b/drivers/gpu/drm/virtio/virtgpu_kms.c
index 1c15cbf326b78c..4a25347734fda4 100644
--- a/drivers/gpu/drm/virtio/virtgpu_kms.c
+++ b/drivers/gpu/drm/virtio/virtgpu_kms.c
@@ -48,7 +48,10 @@ static void virtio_gpu_config_changed_work_func(struct work_struct *work)
virtio_gpu_cmd_get_edids(vgdev);
virtio_gpu_cmd_get_display_info(vgdev);
virtio_gpu_notify(vgdev);
- drm_helper_hpd_irq_event(vgdev->ddev);
+ wait_event_timeout(vgdev->resp_wq,
+ !vgdev->display_info_pending,
+ 5 * HZ);
+ drm_kms_helper_hotplug_event(vgdev->ddev);
}
events_clear |= VIRTIO_GPU_EVENT_DISPLAY;
}
diff --git a/drivers/gpu/drm/virtio/virtgpu_vq.c b/drivers/gpu/drm/virtio/virtgpu_vq.c
index 8181b22b9b46a1..412384e16daea4 100644
--- a/drivers/gpu/drm/virtio/virtgpu_vq.c
+++ b/drivers/gpu/drm/virtio/virtgpu_vq.c
@@ -839,9 +839,6 @@ static void virtio_gpu_cmd_get_display_info_cb(struct virtio_gpu_device *vgdev,
vgdev->display_info_pending = false;
spin_unlock(&vgdev->display_info_lock);
wake_up(&vgdev->resp_wq);
-
- if (!drm_helper_hpd_irq_event(vgdev->ddev))
- drm_kms_helper_hotplug_event(vgdev->ddev);
}
static void virtio_gpu_cmd_get_capset_info_cb(struct virtio_gpu_device *vgdev,
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 008/675] fs/proc/task_mmu: fix make_uffd_wp_huge_pte() prot-update race
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (6 preceding siblings ...)
2026-07-30 14:05 ` [PATCH 6.18 007/675] drm/virtio: fix deadlock in display_info_cb by removing hotplug from dequeue worker Greg Kroah-Hartman
@ 2026-07-30 14:05 ` Greg Kroah-Hartman
2026-07-30 14:05 ` [PATCH 6.18 009/675] seqlock: Cure some more scoped_seqlock() optimization fails Greg Kroah-Hartman
` (671 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:05 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Kiryl Shutsemau, Sashiko AI review,
Lorenzo Stoakes, Dev Jain, David Hildenbrand, Michal Hocko,
Mike Rapoport, Peter Xu, Suren Baghdasaryan, Vlastimil Babka,
Balbir Singh, Andrew Morton, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Kiryl Shutsemau <kas@kernel.org>
commit 04718f7c9290f95385f0dd328758753dc1c36dec upstream.
Patch series "userfaultfd/pagemap: pre-existing fixes".
These are pre-existing bug fixes that were carried at the front of the
userfaultfd RWP working-set-tracking series up to v5 [1]. Per review
feedback that fixes should not sit in the middle of a feature series, they
are split out and sent on their own; the RWP series is reposted rebased on
top of this.
All six were flagged by the Sashiko AI review of the RWP series and carry
Reported-by: Sashiko AI review <sashiko-bot@kernel.org>. They are
independent of RWP, apply to mm-new directly, and carry Cc: stable@.
1: fs/proc/task_mmu: a missing huge_ptep_modify_prot_start() in
make_uffd_wp_huge_pte() can lose hardware Dirty/Accessed updates
when PAGEMAP_SCAN write-protects a hugetlb PTE.
2: fs/proc/task_mmu: pagemap_scan_hugetlb_entry() compares the range
against HPAGE_SIZE rather than the hstate page size, so it never
write-protects gigantic hugetlb pages.
3: fs/proc/task_mmu: PAGEMAP_SCAN with PM_SCAN_WP_MATCHING over an
unpopulated hugetlb range self-deadlocks -- pagemap_scan_pte_hole()
calls uffd_wp_range() while walk_hugetlb_range() holds the hugetlb
vma lock for read, and hugetlb_change_protection() then takes it
for write. Install the marker inline instead.
4: mm/huge_memory: change_non_present_huge_pmd() drops pmd_swp_uffd_wp
on a device-private PMD permission downgrade, silently losing the
uffd-wp marker.
5: userfaultfd: must_wait() applies pte_write() to a locklessly read
PTE without checking pte_present(), so swap/migration entries
decode random offset bits and a thread can stay parked on a stale
fault.
6: userfaultfd: __VMA_UFFD_FLAGS feeds VMA_UFFD_MINOR_BIT (41) to
mk_vma_flags() unconditionally, an out-of-bounds write into the
single-word vma_flags_t on 32-bit. Build the mask from config-gated
per-mode masks so an unavailable bit is never materialised.
This patch (of 6):
make_uffd_wp_huge_pte() arms the UFFD_WP bit on a present HugeTLB PTE by
calling huge_ptep_modify_prot_commit() with a ptent snapshot that was
fetched without the corresponding huge_ptep_modify_prot_start(). The
start helper is what atomically clears the entry so the kernel-owned
snapshot stays consistent until the commit; without it, the hardware may
set Dirty or Accessed in the live PTE between the original read and the
commit, and huge_ptep_modify_prot_commit() (whose generic implementation
just calls set_huge_pte_at()) then writes the stale snapshot back over the
live hardware bits, losing the update.
The non-hugetlb sibling make_uffd_wp_pte() does this correctly via
ptep_modify_prot_start() / ptep_modify_prot_commit(). Mirror that pattern
for the present-PTE branch. The migration case stays as-is -- migration
entries are non-present, so there's no hardware update to race against.
Link: https://lore.kernel.org/20260529172331.356655-1-kas@kernel.org
Link: https://lore.kernel.org/20260529172331.356655-2-kas@kernel.org
Link: https://lore.kernel.org/all/20260526130509.2748441-1-kirill@shutemov.name/ [1]
Fixes: 52526ca7fdb9 ("fs/proc/task_mmu: implement IOCTL to get and optionally clear info about PTEs")
Signed-off-by: Kiryl Shutsemau <kas@kernel.org>
Reported-by: Sashiko AI review <sashiko-bot@kernel.org>
Reviewed-by: Lorenzo Stoakes <ljs@kernel.org>
Reviewed-by: Dev Jain <dev.jain@arm.com>
Cc: David Hildenbrand <david@kernel.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Peter Xu <peterx@redhat.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@kernel.org>
Cc: Balbir Singh <balbirs@nvidia.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
[ kas: adapt to the pre-softleaf idiom; apply the
huge_ptep_modify_prot_start()/commit() fix to the present-PTE
(!huge_pte_none()) branch ]
Signed-off-by: Kiryl Shutsemau (Meta) <kas@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
fs/proc/task_mmu.c | 14 +++++++++-----
1 file changed, 9 insertions(+), 5 deletions(-)
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index 38b9d47426ca99..858b11009c269e 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -2485,15 +2485,19 @@ static void make_uffd_wp_huge_pte(struct vm_area_struct *vma,
psize = huge_page_size(hstate_vma(vma));
- if (is_hugetlb_entry_migration(ptent))
+ if (is_hugetlb_entry_migration(ptent)) {
set_huge_pte_at(vma->vm_mm, addr, ptep,
pte_swp_mkuffd_wp(ptent), psize);
- else if (!huge_pte_none(ptent))
- huge_ptep_modify_prot_commit(vma, addr, ptep, ptent,
- huge_pte_mkuffd_wp(ptent));
- else
+ } else if (!huge_pte_none(ptent)) {
+ pte_t old_pte, new_pte;
+
+ old_pte = huge_ptep_modify_prot_start(vma, addr, ptep);
+ new_pte = huge_pte_mkuffd_wp(old_pte);
+ huge_ptep_modify_prot_commit(vma, addr, ptep, old_pte, new_pte);
+ } else {
set_huge_pte_at(vma->vm_mm, addr, ptep,
make_pte_marker(PTE_MARKER_UFFD_WP), psize);
+ }
}
#endif /* CONFIG_HUGETLB_PAGE */
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 009/675] seqlock: Cure some more scoped_seqlock() optimization fails
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@ 2026-07-30 14:05 ` Greg Kroah-Hartman
2026-07-30 14:05 ` [PATCH 6.18 010/675] seqlock: Allow KASAN to fail optimizing Greg Kroah-Hartman
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679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:05 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Arnd Bergmann,
Peter Zijlstra (Intel), Ingo Molnar, Oleg Nesterov
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Peter Zijlstra <peterz@infradead.org>
commit 90dfeef1cd38dff19f8b3a752d13bfd79f0f7694 upstream.
Arnd reported an x86 randconfig using gcc-15 tripped over
__scoped_seqlock_bug(). Turns out GCC chose not to inline the
scoped_seqlock helper functions and as such was not able to optimize
properly.
[ mingo: Clang fails the build too in some circumstances. ]
Reported-by: Arnd Bergmann <arnd@arndb.de>
Tested-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Link: https://patch.msgid.link/20251204104332.GG2528459@noisy.programming.kicks-ass.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
include/linux/seqlock.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/include/linux/seqlock.h
+++ b/include/linux/seqlock.h
@@ -1224,7 +1224,7 @@ struct ss_tmp {
spinlock_t *lock_irqsave;
};
-static inline void __scoped_seqlock_cleanup(struct ss_tmp *sst)
+static __always_inline void __scoped_seqlock_cleanup(struct ss_tmp *sst)
{
if (sst->lock)
spin_unlock(sst->lock);
@@ -1249,7 +1249,7 @@ static inline void __scoped_seqlock_bug(
extern void __scoped_seqlock_bug(void);
#endif
-static inline void
+static __always_inline void
__scoped_seqlock_next(struct ss_tmp *sst, seqlock_t *lock, enum ss_state target)
{
switch (sst->state) {
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 010/675] seqlock: Allow KASAN to fail optimizing
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
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@ 2026-07-30 14:05 ` Greg Kroah-Hartman
2026-07-30 14:05 ` [PATCH 6.18 011/675] seqlock: Allow UBSAN_ALIGNMENT " Greg Kroah-Hartman
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From: Greg Kroah-Hartman @ 2026-07-30 14:05 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, kernel test robot,
Peter Zijlstra (Intel)
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Peter Zijlstra <peterz@infradead.org>
commit b94d45b6bbb42571ec225d3be0e7457c8765a5b4 upstream.
Some KASAN builds are failing to properly optimize this code --
luckily we don't care about core quality for KASAN builds, so just
exclude it.
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Closes: https://lore.kernel.org/oe-kbuild-all/202510251641.idrNXhv5-lkp@intel.com/
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
include/linux/seqlock.h | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
--- a/include/linux/seqlock.h
+++ b/include/linux/seqlock.h
@@ -1234,11 +1234,14 @@ static __always_inline void __scoped_seq
extern void __scoped_seqlock_invalid_target(void);
-#if defined(CONFIG_CC_IS_GCC) && CONFIG_GCC_VERSION < 90000
+#if (defined(CONFIG_CC_IS_GCC) && CONFIG_GCC_VERSION < 90000) || defined(CONFIG_KASAN)
/*
* For some reason some GCC-8 architectures (nios2, alpha) have trouble
* determining that the ss_done state is impossible in __scoped_seqlock_next()
* below.
+ *
+ * Similarly KASAN is known to confuse compilers enough to break this. But we
+ * don't care about code quality for KASAN builds anyway.
*/
static inline void __scoped_seqlock_bug(void) { }
#else
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 011/675] seqlock: Allow UBSAN_ALIGNMENT to fail optimizing
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@ 2026-07-30 14:05 ` Greg Kroah-Hartman
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From: Greg Kroah-Hartman @ 2026-07-30 14:05 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Arnd Bergmann, Heiko Carstens,
Peter Zijlstra (Intel)
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Heiko Carstens <hca@linux.ibm.com>
commit 88331c4ec23a28c1006ec532fa64763d4c695e90 upstream.
With gcc-15 and gcc-16 with UBSAN_ALIGNMENT enabled the compiler fails to
inline and optimize __scoped_seqlock_bug() away on s390:
s390x-16.1.0-ld: kernel/sched/build_policy.o: in function `__scoped_seqlock_next':
/.../seqlock.h:1286:(.text+0x22030): undefined reference to `__scoped_seqlock_bug'
Fix this by adding UBSAN_ALIGNMENT to the list of config options where a
not inlined empty __scoped_seqlock_bug() is allowed.
Closes: https://lore.kernel.org/r/20260515092057.810542-1-arnd@kernel.org/
Reported-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://patch.msgid.link/20260519110315.1385307-1-hca@linux.ibm.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
include/linux/seqlock.h | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
--- a/include/linux/seqlock.h
+++ b/include/linux/seqlock.h
@@ -1234,14 +1234,15 @@ static __always_inline void __scoped_seq
extern void __scoped_seqlock_invalid_target(void);
-#if (defined(CONFIG_CC_IS_GCC) && CONFIG_GCC_VERSION < 90000) || defined(CONFIG_KASAN)
+#if (defined(CONFIG_CC_IS_GCC) && CONFIG_GCC_VERSION < 90000) || \
+ defined(CONFIG_KASAN) || defined(CONFIG_UBSAN_ALIGNMENT)
/*
* For some reason some GCC-8 architectures (nios2, alpha) have trouble
* determining that the ss_done state is impossible in __scoped_seqlock_next()
* below.
*
- * Similarly KASAN is known to confuse compilers enough to break this. But we
- * don't care about code quality for KASAN builds anyway.
+ * Similarly KASAN and UBSAN_ALIGNMENT are known to confuse compilers enough
+ * to break this. But we don't care about code quality for such builds anyway.
*/
static inline void __scoped_seqlock_bug(void) { }
#else
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 012/675] KVM: x86: Check for invalid/obsolete root *after* making MMU pages available
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@ 2026-07-30 14:05 ` Greg Kroah-Hartman
2026-07-30 14:05 ` [PATCH 6.18 013/675] KVM: x86: Only reset TSC Deadline Timer in apic_timer_expired on KVM_RUN Greg Kroah-Hartman
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679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:05 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Hyunwoo Kim, Sean Christopherson,
Paolo Bonzini
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Sean Christopherson <seanjc@google.com>
commit 2abd5287f08319fa35764566b15c6e22cb1068db upstream.
Check for a "stale" page fault, i.e. for an invalid and/or obsolete root,
after making MMU pages available for the shadow MMU. If reclaiming shadow
pages zaps an in-use root, i.e. marks it invalid, then KVM will attempt to
map memory into an invalid root. On its own, populating an invalid root is
"fine", but because child shadow pages inherit their parent's role, any
children created during the map/fetch will be created as invalid pages,
thus violating KVM's invariant that invalid pages are never on the list of
active MMU pages.
Note, the underlying flaw has existed since KVM first started tracking
invalid roots in 2008 (commit 2e53d63acba7, "KVM: MMU: ignore zapped root
pagetables"), but the true badness only came along in 2020 (Linux 5.9)
with the invariant that invalid shadow pages can't be on the list of
active pages.
Note #2, inheriting role.invalid when creating child shadow pages is also
far from ideal; that flaw will be addressed separately.
Reported-by: Hyunwoo Kim <imv4bel@gmail.com>
Fixes: f95eec9bed76 ("KVM: x86/mmu: Don't put invalid SPs back on the list of active pages")
Cc: stable@vger.kernel.org
Signed-off-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/x86/kvm/mmu/mmu.c | 9 +++++----
arch/x86/kvm/mmu/paging_tmpl.h | 10 ++++++----
2 files changed, 11 insertions(+), 8 deletions(-)
--- a/arch/x86/kvm/mmu/mmu.c
+++ b/arch/x86/kvm/mmu/mmu.c
@@ -4806,16 +4806,17 @@ static int direct_page_fault(struct kvm_
if (r != RET_PF_CONTINUE)
return r;
- r = RET_PF_RETRY;
write_lock(&vcpu->kvm->mmu_lock);
- if (is_page_fault_stale(vcpu, fault))
- goto out_unlock;
-
r = make_mmu_pages_available(vcpu);
if (r)
goto out_unlock;
+ if (is_page_fault_stale(vcpu, fault)) {
+ r = RET_PF_RETRY;
+ goto out_unlock;
+ }
+
r = direct_map(vcpu, fault);
out_unlock:
--- a/arch/x86/kvm/mmu/paging_tmpl.h
+++ b/arch/x86/kvm/mmu/paging_tmpl.h
@@ -827,15 +827,17 @@ static int FNAME(page_fault)(struct kvm_
}
#endif
- r = RET_PF_RETRY;
write_lock(&vcpu->kvm->mmu_lock);
- if (is_page_fault_stale(vcpu, fault))
- goto out_unlock;
-
r = make_mmu_pages_available(vcpu);
if (r)
goto out_unlock;
+
+ if (is_page_fault_stale(vcpu, fault)) {
+ r = RET_PF_RETRY;
+ goto out_unlock;
+ }
+
r = FNAME(fetch)(vcpu, fault, &walker);
out_unlock:
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 013/675] KVM: x86: Only reset TSC Deadline Timer in apic_timer_expired on KVM_RUN
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@ 2026-07-30 14:05 ` Greg Kroah-Hartman
2026-07-30 14:05 ` [PATCH 6.18 014/675] KVM: nVMX: Hide shadow VMCS right after VMCLEAR Greg Kroah-Hartman
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From: Greg Kroah-Hartman @ 2026-07-30 14:05 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Venkatesh Srinivas, James Houghton,
Chao Gao, Paolo Bonzini, David Matlack, Sean Christopherson,
Jim Mattson
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Venkatesh Srinivas <venkateshs@chromium.org>
commit e800decd9c0ac4349bcd8f8f9b29fd21fe93165e upstream.
On Intel platforms with a VMX preemption timer and APICv, if a VMM
calls KVM_GET_LAPIC before KVM_GET_MSRS to save the vCPU state, it is
possible to lose a pending timer interrupt.
If the thread running these ioctls is migrated to another core after
calling KVM_GET_LAPIC but before KVM_GET_MSRS and the guest is using
their LAPIC timer in TSC-deadline mode, not only does the save LAPIC
state not carry the pending interrupt, the TSCDEADLINE MSR will be
zeroed.
After migration across CPUs, KVM_GET_MSRS calls vcpu_load, posting the
interrupt and clearing the MSR:
vcpu_load() ->
kvm_arch_vcpu_load() ->
kvm_lapic_restart_hv_timer() ->
start_hv_timer() ->
apic_timer_expired() ->
kvm_apic_inject_pending_timer_irqs()
. post interrupt into the LAPIC state
. clear IA32_TSCDEADLINE
The saved LAPIC state will be missing the pending interrupt and the saved
MSR will be zero. Oops.
Fix by only posting an interrupt when we're attempting to enter the guest
(vcpu->wants_to_run == true), not for vcpu_load from other paths.
Assisted-by: gemini:gemini-3.1-pro-preview
Debugged-by: David Matlack <dmatlack@google.com>
Debugged-by: Sean Christopherson <seanjc@google.com>
Debugged-by: Jim Mattson <jmattson@google.com>
Debugged-by: James Houghton <jthoughton@google.com>
Signed-off-by: Venkatesh Srinivas <venkateshs@chromium.org>
Message-ID: <20260715234234.15382-2-venkateshs@chromium.org>
Reviewed-by: James Houghton <jthoughton@google.com>
Reviewed-by: Chao Gao <chao.gao@intel.com>
Cc: stable@vger.kernel.org
Fixes: ae95f566b3d2 ("KVM: X86: TSCDEADLINE MSR emulation fastpath", 2020-05-15)
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/x86/kvm/lapic.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/x86/kvm/lapic.c
+++ b/arch/x86/kvm/lapic.c
@@ -2065,7 +2065,7 @@ static void apic_timer_expired(struct kv
if (apic_lvtt_tscdeadline(apic) || ktimer->hv_timer_in_use)
ktimer->expired_tscdeadline = ktimer->tscdeadline;
- if (!from_timer_fn && apic->apicv_active) {
+ if (!from_timer_fn && apic->apicv_active && vcpu->wants_to_run) {
WARN_ON(kvm_get_running_vcpu() != vcpu);
kvm_apic_inject_pending_timer_irqs(apic);
return;
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 014/675] KVM: nVMX: Hide shadow VMCS right after VMCLEAR
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
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@ 2026-07-30 14:05 ` Greg Kroah-Hartman
2026-07-30 14:05 ` [PATCH 6.18 015/675] KVM: x86/mmu: Fix use-after-free on vendor module reload Greg Kroah-Hartman
` (665 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:05 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Hyunwoo Kim, Paolo Bonzini
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Hyunwoo Kim <imv4bel@gmail.com>
commit 622ebfac01ba4f9c0060cebd41257fe46fc4a0b3 upstream.
free_nested() frees the shadow VMCS while vmcs01 still points to it. But
because it is asynchronous with respect to loaded_vmcs_clear(), the vCPU
might migrate before the pointer is cleared and __loaded_vmcs_clear()
may then execute VMCLEAR.
The VMCS needs to stay attached until its explicit VMCLEAR completes, but
then it can be hidden and the page safely freed.
Fixes: 355f4fb1405e ("kvm: nVMX: VMCLEAR an active shadow VMCS after last use")
Cc: stable@vger.kernel.org
Signed-off-by: Hyunwoo Kim <imv4bel@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/x86/kvm/vmx/nested.c | 11 +++++++++--
1 file changed, 9 insertions(+), 2 deletions(-)
--- a/arch/x86/kvm/vmx/nested.c
+++ b/arch/x86/kvm/vmx/nested.c
@@ -333,6 +333,7 @@ static void nested_put_vmcs12_pages(stru
static void free_nested(struct kvm_vcpu *vcpu)
{
struct vcpu_vmx *vmx = to_vmx(vcpu);
+ struct vmcs *shadow_vmcs;
if (WARN_ON_ONCE(vmx->loaded_vmcs != &vmx->vmcs01))
vmx_switch_vmcs(vcpu, &vmx->vmcs01);
@@ -350,9 +351,15 @@ static void free_nested(struct kvm_vcpu
vmx->nested.current_vmptr = INVALID_GPA;
if (enable_shadow_vmcs) {
vmx_disable_shadow_vmcs(vmx);
- vmcs_clear(vmx->vmcs01.shadow_vmcs);
- free_vmcs(vmx->vmcs01.shadow_vmcs);
+
+ /*
+ * Keep the pointer visible until after VMCLEAR, so migration
+ * can clear an active shadow VMCS on the old CPU.
+ */
+ shadow_vmcs = vmx->vmcs01.shadow_vmcs;
+ vmcs_clear(shadow_vmcs);
vmx->vmcs01.shadow_vmcs = NULL;
+ free_vmcs(shadow_vmcs);
}
kfree(vmx->nested.cached_vmcs12);
vmx->nested.cached_vmcs12 = NULL;
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 015/675] KVM: x86/mmu: Fix use-after-free on vendor module reload
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
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@ 2026-07-30 14:05 ` Greg Kroah-Hartman
2026-07-30 14:05 ` [PATCH 6.18 016/675] can: bcm: add locking when updating filter and timer values Greg Kroah-Hartman
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From: Greg Kroah-Hartman @ 2026-07-30 14:05 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Phil Rosenthal, Paolo Bonzini
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Phil Rosenthal <phil@phil.gs>
commit 52f2f7c30126037975389aa04d24c506a5177c35 upstream.
mmu_destroy_caches() destroys pte_list_desc_cache and
mmu_page_header_cache, but leaves both pointers unchanged. The pointers
live in kvm.ko, and therefore survive when a vendor module is unloaded
while kvm.ko remains loaded.
If creation of pte_list_desc_cache fails during a subsequent vendor
module load, its assignment sets pte_list_desc_cache to NULL and the
error path calls mmu_destroy_caches(). mmu_page_header_cache still
points to the cache destroyed during the preceding vendor module
unload. Passing that stale pointer to kmem_cache_destroy() causes a
slab use-after-free.
Reproduce the issue on a v7.1.3 kernel with CONFIG_KASAN=y,
CONFIG_KASAN_GENERIC=y, CONFIG_KVM=m, and CONFIG_KVM_INTEL=m. A
one-shot test hook forces pte_list_desc_cache to NULL on the second
invocation of kvm_mmu_vendor_module_init():
1. Load kvm.ko and kvm-intel.ko, creating both caches.
2. Unload only kvm_intel, leaving kvm.ko loaded.
3. Reload kvm_intel and force initialization through the -ENOMEM path.
KASAN reports:
BUG: KASAN: slab-use-after-free in
kvm_mmu_vendor_module_init+0x5b/0x170 [kvm]
...
kmem_cache_destroy+0x21/0x1d0
kvm_mmu_vendor_module_init+0x5b/0x170 [kvm]
...
Allocated by task 16817:
__kmem_cache_create_args+0x12c/0x3b0
__kmem_cache_create.constprop.0+0xb6/0xf0 [kvm]
kvm_mmu_vendor_module_init+0x13b/0x170 [kvm]
...
Freed by task 16820:
kmem_cache_destroy+0x117/0x1d0
kvm_mmu_vendor_module_exit+0x21/0x30 [kvm]
Clear both pointers immediately after destroying their caches so that
the stored state reflects the caches' lifetime and repeated cleanup is
safe.
With the fix applied, the same injected vendor module reload fails with
-ENOMEM as expected and produces no KASAN report.
Fixes: cb498ea2ce1d ("KVM: Portability: Combine kvm_init and kvm_init_x86")
Cc: stable@vger.kernel.org
Signed-off-by: Phil Rosenthal <phil@phil.gs>
Message-ID: <20260718-kvm-mmu-cache-uaf-v3-1-e103b93c74e1@phil.gs>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/x86/kvm/mmu/mmu.c | 2 ++
1 file changed, 2 insertions(+)
--- a/arch/x86/kvm/mmu/mmu.c
+++ b/arch/x86/kvm/mmu/mmu.c
@@ -7393,7 +7393,9 @@ void kvm_mmu_invalidate_mmio_sptes(struc
static void mmu_destroy_caches(void)
{
kmem_cache_destroy(pte_list_desc_cache);
+ pte_list_desc_cache = NULL;
kmem_cache_destroy(mmu_page_header_cache);
+ mmu_page_header_cache = NULL;
}
static void kvm_wake_nx_recovery_thread(struct kvm *kvm)
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 016/675] can: bcm: add locking when updating filter and timer values
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (14 preceding siblings ...)
2026-07-30 14:05 ` [PATCH 6.18 015/675] KVM: x86/mmu: Fix use-after-free on vendor module reload Greg Kroah-Hartman
@ 2026-07-30 14:05 ` Greg Kroah-Hartman
2026-07-30 14:05 ` [PATCH 6.18 017/675] can: bcm: fix CAN frame rx/tx statistics Greg Kroah-Hartman
` (663 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:05 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, syzbot+75e5e4ae00c3b4bb544e,
Oliver Hartkopp, stable, Marc Kleine-Budde, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Oliver Hartkopp <socketcan@hartkopp.net>
commit 749179c2e25b95d22499ed29096b3e02d6dfd2b4 upstream.
KCSAN detected a simultaneous access to timer values that can be
overwritten in bcm_rx_setup() when updating timer and filter content
while bcm_rx_handler(), bcm_rx_timeout_handler() or bcm_rx_thr_handler()
run concurrently on incoming CAN traffic.
Protect the timer (ival1/ival2/kt_ival1/kt_ival2/kt_lastmsg) and filter
(nframes/flags/frames/last_frames) updates in bcm_rx_setup() with a new
per-op bcm_rx_update_lock, taken with the matching scope in the RX
handlers. memcpy_from_msg() is staged into a temporary buffer before the
lock is taken, since it can sleep and must not run under a spinlock.
hrtimer_cancel() is always called without bcm_rx_update_lock held, since
bcm_rx_timeout_handler()/bcm_rx_thr_handler() take the same lock and a
running callback would otherwise deadlock against the canceller.
Also close a related race: bcm_rx_setup() cleared the RTR flag in the
stored reply frame's can_id as a separate, unprotected step after the
frame content was already installed, so a concurrent bcm_rx_handler()
could transmit a stale reply with CAN_RTR_FLAG still set. Fold that
normalization into the initial frame preparation instead (on the staged
buffer for updates, directly on op->frames pre-registration for new
ops), so the installed frame is always atomically self-consistent.
bcm_rx_handler()'s RX_RTR_FRAME check now takes a lock-protected
snapshot of op->flags before deciding whether to call bcm_can_tx(),
but does not hold the lock across that call.
Also take a lock-protected snapshot of the currframe in bcm_can_tx()
to avoid partly overwrites by content updates in bcm_tx_setup().
Finally check if a TX_RESET_MULTI_IDX/SETTIMER might have reset
op->currframe between the two locked sections in bcm_can_tx().
Omit calling hrtimer_forward() with zero interval in bcm_rx_thr_handler().
kt_ival2 may have been concurrently cleared by bcm_rx_setup() before it
cancels this timer, so check kt_ival2 inside the bcm_rx_update_lock.
Fixes: c2aba69d0c36 ("can: bcm: add locking for bcm_op runtime updates")
Reported-by: syzbot+75e5e4ae00c3b4bb544e@syzkaller.appspotmail.com
Closes: https://lore.kernel.org/linux-can/6975d5cf.a00a0220.33ccc7.0022.GAE@google.com/
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Link: https://patch.msgid.link/20260714-bcm_fixes-v15-3-562f7e3e42da@hartkopp.net
Cc: stable@kernel.org
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/can/bcm.c | 176 ++++++++++++++++++++++++++++++++++++++------------
1 file changed, 133 insertions(+), 43 deletions(-)
diff --git a/net/can/bcm.c b/net/can/bcm.c
index a40519638a262b..cfc495106aac4d 100644
--- a/net/can/bcm.c
+++ b/net/can/bcm.c
@@ -128,6 +128,7 @@ struct bcm_op {
struct sock *sk;
struct net_device *rx_reg_dev;
spinlock_t bcm_tx_lock; /* protect currframe/count in runtime updates */
+ spinlock_t bcm_rx_update_lock; /* protect filter/timer data updates */
};
struct bcm_sock {
@@ -292,21 +293,27 @@ static int bcm_proc_show(struct seq_file *m, void *v)
* bcm_can_tx - send the (next) CAN frame to the appropriate CAN interface
* of the given bcm tx op
*/
-static void bcm_can_tx(struct bcm_op *op)
+static void bcm_can_tx(struct bcm_op *op, struct canfd_frame *cf)
{
struct sk_buff *skb;
struct net_device *dev;
- struct canfd_frame *cf;
+ struct canfd_frame cframe;
+ bool cyclic = !cf;
+ unsigned int idx = 0;
int err;
/* no target device? => exit */
if (!op->ifindex)
return;
- /* read currframe under lock protection */
- spin_lock_bh(&op->bcm_tx_lock);
- cf = op->frames + op->cfsiz * op->currframe;
- spin_unlock_bh(&op->bcm_tx_lock);
+ if (cyclic) {
+ /* read currframe under lock protection */
+ spin_lock_bh(&op->bcm_tx_lock);
+ idx = op->currframe;
+ memcpy(&cframe, op->frames + op->cfsiz * idx, op->cfsiz);
+ cf = &cframe;
+ spin_unlock_bh(&op->bcm_tx_lock);
+ }
dev = dev_get_by_index(sock_net(op->sk), op->ifindex);
if (!dev) {
@@ -335,14 +342,20 @@ static void bcm_can_tx(struct bcm_op *op)
if (!err)
op->frames_abs++;
- op->currframe++;
+ /* only advance the cyclic sequence if nothing reset currframe while
+ * we were sending - a concurrent TX_RESET_MULTI_IDX means this
+ * frame's bookkeeping belongs to a sequence that no longer exists
+ */
+ if (!cyclic || op->currframe == idx) {
+ op->currframe++;
- /* reached last frame? */
- if (op->currframe >= op->nframes)
- op->currframe = 0;
+ /* reached last frame? */
+ if (op->currframe >= op->nframes)
+ op->currframe = 0;
- if (op->count > 0)
- op->count--;
+ if (op->count > 0)
+ op->count--;
+ }
spin_unlock_bh(&op->bcm_tx_lock);
out:
@@ -456,7 +469,7 @@ static enum hrtimer_restart bcm_tx_timeout_handler(struct hrtimer *hrtimer)
struct bcm_msg_head msg_head;
if (op->kt_ival1 && (op->count > 0)) {
- bcm_can_tx(op);
+ bcm_can_tx(op, NULL);
if (!op->count && (op->flags & TX_COUNTEVT)) {
/* create notification to user */
@@ -473,7 +486,7 @@ static enum hrtimer_restart bcm_tx_timeout_handler(struct hrtimer *hrtimer)
}
} else if (op->kt_ival2) {
- bcm_can_tx(op);
+ bcm_can_tx(op, NULL);
}
return bcm_tx_set_expiry(op, &op->timer) ?
@@ -617,6 +630,8 @@ static enum hrtimer_restart bcm_rx_timeout_handler(struct hrtimer *hrtimer)
struct bcm_op *op = container_of(hrtimer, struct bcm_op, timer);
struct bcm_msg_head msg_head;
+ spin_lock_bh(&op->bcm_rx_update_lock);
+
/* if user wants to be informed, when cyclic CAN-Messages come back */
if ((op->flags & RX_ANNOUNCE_RESUME) && op->last_frames) {
/* clear received CAN frames to indicate 'nothing received' */
@@ -633,6 +648,8 @@ static enum hrtimer_restart bcm_rx_timeout_handler(struct hrtimer *hrtimer)
msg_head.can_id = op->can_id;
msg_head.nframes = 0;
+ spin_unlock_bh(&op->bcm_rx_update_lock);
+
bcm_send_to_user(op, &msg_head, NULL, 0);
return HRTIMER_NORESTART;
@@ -681,15 +698,26 @@ static int bcm_rx_thr_flush(struct bcm_op *op)
static enum hrtimer_restart bcm_rx_thr_handler(struct hrtimer *hrtimer)
{
struct bcm_op *op = container_of(hrtimer, struct bcm_op, thrtimer);
+ enum hrtimer_restart ret;
- if (bcm_rx_thr_flush(op)) {
+ spin_lock_bh(&op->bcm_rx_update_lock);
+
+ /* kt_ival2 may have been concurrently cleared by bcm_rx_setup()
+ * before it cancels this timer - never forward with a zero
+ * interval in that case.
+ */
+ if (bcm_rx_thr_flush(op) && op->kt_ival2) {
hrtimer_forward_now(hrtimer, op->kt_ival2);
- return HRTIMER_RESTART;
+ ret = HRTIMER_RESTART;
} else {
/* rearm throttle handling */
op->kt_lastmsg = 0;
- return HRTIMER_NORESTART;
+ ret = HRTIMER_NORESTART;
}
+
+ spin_unlock_bh(&op->bcm_rx_update_lock);
+
+ return ret;
}
/*
@@ -699,8 +727,10 @@ static void bcm_rx_handler(struct sk_buff *skb, void *data)
{
struct bcm_op *op = (struct bcm_op *)data;
const struct canfd_frame *rxframe = (struct canfd_frame *)skb->data;
+ struct canfd_frame rtrframe;
unsigned int i;
unsigned char traffic_flags;
+ bool rtr_frame;
if (op->can_id != rxframe->can_id)
return;
@@ -724,9 +754,18 @@ static void bcm_rx_handler(struct sk_buff *skb, void *data)
/* update statistics */
op->frames_abs++;
- if (op->flags & RX_RTR_FRAME) {
+ /* snapshot the flag under lock: op->flags/op->frames may be updated
+ * concurrently by bcm_rx_setup().
+ */
+ spin_lock_bh(&op->bcm_rx_update_lock);
+ rtr_frame = op->flags & RX_RTR_FRAME;
+ if (rtr_frame)
+ memcpy(&rtrframe, op->frames, op->cfsiz);
+ spin_unlock_bh(&op->bcm_rx_update_lock);
+
+ if (rtr_frame) {
/* send reply for RTR-request (placed in op->frames[0]) */
- bcm_can_tx(op);
+ bcm_can_tx(op, &rtrframe);
return;
}
@@ -738,6 +777,8 @@ static void bcm_rx_handler(struct sk_buff *skb, void *data)
traffic_flags |= RX_OWN;
}
+ spin_lock_bh(&op->bcm_rx_update_lock);
+
if (op->flags & RX_FILTER_ID) {
/* the easiest case */
bcm_rx_update_and_send(op, op->last_frames, rxframe,
@@ -773,6 +814,8 @@ static void bcm_rx_handler(struct sk_buff *skb, void *data)
rx_starttimer:
bcm_rx_starttimer(op);
+
+ spin_unlock_bh(&op->bcm_rx_update_lock);
}
/*
@@ -1115,7 +1158,7 @@ static int bcm_tx_setup(struct bcm_msg_head *msg_head, struct msghdr *msg,
list_add_rcu(&op->list, &bo->tx_ops);
if (op->flags & TX_ANNOUNCE)
- bcm_can_tx(op);
+ bcm_can_tx(op, NULL);
if (op->flags & STARTTIMER)
bcm_tx_start_timer(op);
@@ -1129,6 +1172,24 @@ static int bcm_tx_setup(struct bcm_msg_head *msg_head, struct msghdr *msg,
return err;
}
+static void bcm_rx_setup_rtr_check(struct bcm_msg_head *msg_head,
+ struct bcm_op *op, void *new_frames)
+{
+ /* funny feature in RX(!)_SETUP only for RTR-mode:
+ * copy can_id into frame BUT without RTR-flag to
+ * prevent a full-load-loopback-test ... ;-]
+ * normalize this on the staged buffer, before it is
+ * ever installed into op->frames.
+ */
+ if (msg_head->flags & RX_RTR_FRAME) {
+ struct canfd_frame *frame0 = new_frames;
+
+ if ((msg_head->flags & TX_CP_CAN_ID) ||
+ frame0->can_id == op->can_id)
+ frame0->can_id = op->can_id & ~CAN_RTR_FLAG;
+ }
+}
+
/*
* bcm_rx_setup - create or update a bcm rx op (for bcm_sendmsg)
*/
@@ -1163,6 +1224,8 @@ static int bcm_rx_setup(struct bcm_msg_head *msg_head, struct msghdr *msg,
/* check the given can_id */
op = bcm_find_op(&bo->rx_ops, msg_head, ifindex);
if (op) {
+ void *new_frames = NULL;
+
/* update existing BCM operation */
/*
@@ -1174,19 +1237,48 @@ static int bcm_rx_setup(struct bcm_msg_head *msg_head, struct msghdr *msg,
return -E2BIG;
if (msg_head->nframes) {
- /* update CAN frames content */
- err = memcpy_from_msg(op->frames, msg,
+ /* get new CAN frames content before locking */
+ new_frames = kmalloc(msg_head->nframes * op->cfsiz,
+ GFP_KERNEL);
+ if (!new_frames)
+ return -ENOMEM;
+
+ err = memcpy_from_msg(new_frames, msg,
msg_head->nframes * op->cfsiz);
- if (err < 0)
+ if (err < 0) {
+ kfree(new_frames);
return err;
+ }
- /* clear last_frames to indicate 'nothing received' */
- memset(op->last_frames, 0, msg_head->nframes * op->cfsiz);
+ bcm_rx_setup_rtr_check(msg_head, op, new_frames);
}
+ spin_lock_bh(&op->bcm_rx_update_lock);
op->nframes = msg_head->nframes;
op->flags = msg_head->flags;
+ if (msg_head->nframes) {
+ /* update CAN frames content */
+ memcpy(op->frames, new_frames,
+ msg_head->nframes * op->cfsiz);
+
+ /* clear last_frames to indicate 'nothing received' */
+ memset(op->last_frames, 0,
+ msg_head->nframes * op->cfsiz);
+ }
+
+ if (msg_head->flags & SETTIMER) {
+ op->ival1 = msg_head->ival1;
+ op->ival2 = msg_head->ival2;
+ op->kt_ival1 = bcm_timeval_to_ktime(msg_head->ival1);
+ op->kt_ival2 = bcm_timeval_to_ktime(msg_head->ival2);
+ op->kt_lastmsg = 0;
+ }
+ spin_unlock_bh(&op->bcm_rx_update_lock);
+
+ /* free temporary frames / kfree(NULL) is safe */
+ kfree(new_frames);
+
/* Only an update -> do not call can_rx_register() */
do_rx_register = 0;
@@ -1197,6 +1289,7 @@ static int bcm_rx_setup(struct bcm_msg_head *msg_head, struct msghdr *msg,
return -ENOMEM;
spin_lock_init(&op->bcm_tx_lock);
+ spin_lock_init(&op->bcm_rx_update_lock);
op->can_id = msg_head->can_id;
op->nframes = msg_head->nframes;
op->cfsiz = CFSIZ(msg_head->flags);
@@ -1238,6 +1331,8 @@ static int bcm_rx_setup(struct bcm_msg_head *msg_head, struct msghdr *msg,
kfree(op);
return err;
}
+
+ bcm_rx_setup_rtr_check(msg_head, op, op->frames);
}
/* bcm_can_tx / bcm_tx_timeout_handler needs this */
@@ -1262,29 +1357,22 @@ static int bcm_rx_setup(struct bcm_msg_head *msg_head, struct msghdr *msg,
/* check flags */
if (op->flags & RX_RTR_FRAME) {
- struct canfd_frame *frame0 = op->frames;
-
/* no timers in RTR-mode */
hrtimer_cancel(&op->thrtimer);
hrtimer_cancel(&op->timer);
-
- /*
- * funny feature in RX(!)_SETUP only for RTR-mode:
- * copy can_id into frame BUT without RTR-flag to
- * prevent a full-load-loopback-test ... ;-]
- */
- if ((op->flags & TX_CP_CAN_ID) ||
- (frame0->can_id == op->can_id))
- frame0->can_id = op->can_id & ~CAN_RTR_FLAG;
-
} else {
if (op->flags & SETTIMER) {
- /* set timer value */
- op->ival1 = msg_head->ival1;
- op->ival2 = msg_head->ival2;
- op->kt_ival1 = bcm_timeval_to_ktime(msg_head->ival1);
- op->kt_ival2 = bcm_timeval_to_ktime(msg_head->ival2);
+ /* set timers (locked) for newly created op */
+ if (do_rx_register) {
+ spin_lock_bh(&op->bcm_rx_update_lock);
+ op->ival1 = msg_head->ival1;
+ op->ival2 = msg_head->ival2;
+ op->kt_ival1 = bcm_timeval_to_ktime(msg_head->ival1);
+ op->kt_ival2 = bcm_timeval_to_ktime(msg_head->ival2);
+ op->kt_lastmsg = 0;
+ spin_unlock_bh(&op->bcm_rx_update_lock);
+ }
/* disable an active timer due to zero value? */
if (!op->kt_ival1)
@@ -1294,9 +1382,11 @@ static int bcm_rx_setup(struct bcm_msg_head *msg_head, struct msghdr *msg,
* In any case cancel the throttle timer, flush
* potentially blocked msgs and reset throttle handling
*/
- op->kt_lastmsg = 0;
hrtimer_cancel(&op->thrtimer);
+
+ spin_lock_bh(&op->bcm_rx_update_lock);
bcm_rx_thr_flush(op);
+ spin_unlock_bh(&op->bcm_rx_update_lock);
}
if ((op->flags & STARTTIMER) && op->kt_ival1)
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 017/675] can: bcm: fix CAN frame rx/tx statistics
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (15 preceding siblings ...)
2026-07-30 14:05 ` [PATCH 6.18 016/675] can: bcm: add locking when updating filter and timer values Greg Kroah-Hartman
@ 2026-07-30 14:05 ` Greg Kroah-Hartman
2026-07-30 14:05 ` [PATCH 6.18 018/675] can: bcm: extend bcm_tx_lock usage for data and timer updates Greg Kroah-Hartman
` (662 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:05 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Oliver Hartkopp, stable,
Marc Kleine-Budde, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Oliver Hartkopp <socketcan@hartkopp.net>
commit e6c24ba95fc3f1b5e1dcd28b1c6e59ef61a9daa5 upstream.
KCSAN detected a data race within the bcm_rx_handler() when two CAN frames
have been simultaneously received and processed in a single rx op by two
different CPUs.
Use atomic operations with (signed) long data types to access the
statistics in the hot path to fix the KCSAN complaint.
Additionally simplify the update and check of statistics overflow by
using the atomic operations in separate bcm_update_[rx|tx]_stats()
functions. The rx variant runs under bcm_rx_update_lock to prevent
races when resetting the two rx counters; the tx variant runs under
bcm_tx_lock and only needs to guard its own counter's overflow.
As the rx path resets its values already at LONG_MAX / 100, there is
no conflict between the two locking domains (bcm_rx_update_lock vs.
bcm_tx_lock) even for ops that use both paths.
The rx statistics update and the frames_filtered update in
bcm_rx_changed() were previously performed in two separate
bcm_rx_update_lock sections. For an rx op subscribed on all interfaces
(ifindex == 0), bcm_rx_handler() can run concurrently on different
CPUs, so a counter reset by one CPU between these two sections could
leave frames_filtered larger than frames_abs on another CPU, producing
a bogus (even negative) reduction percentage in procfs. Update the
statistics in the same critical section as bcm_rx_changed() to close
this gap, which also removes the now unneeded extra lock/unlock pair
around the traffic_flags calculation.
Fixes: ffd980f976e7 ("[CAN]: Add broadcast manager (bcm) protocol")
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Link: https://patch.msgid.link/20260714-bcm_fixes-v15-4-562f7e3e42da@hartkopp.net
Cc: stable@kernel.org
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/can/bcm.c | 69 ++++++++++++++++++++++++++++++++++-----------------
1 file changed, 46 insertions(+), 23 deletions(-)
diff --git a/net/can/bcm.c b/net/can/bcm.c
index cfc495106aac4d..1d4323cdf48a47 100644
--- a/net/can/bcm.c
+++ b/net/can/bcm.c
@@ -111,7 +111,7 @@ struct bcm_op {
int ifindex;
canid_t can_id;
u32 flags;
- unsigned long frames_abs, frames_filtered;
+ atomic_long_t frames_abs, frames_filtered;
struct bcm_timeval ival1, ival2;
struct hrtimer timer, thrtimer;
ktime_t rx_stamp, kt_ival1, kt_ival2, kt_lastmsg;
@@ -228,10 +228,13 @@ static int bcm_proc_show(struct seq_file *m, void *v)
list_for_each_entry_rcu(op, &bo->rx_ops, list) {
- unsigned long reduction;
+ long reduction, frames_filtered, frames_abs;
+
+ frames_filtered = atomic_long_read(&op->frames_filtered);
+ frames_abs = atomic_long_read(&op->frames_abs);
/* print only active entries & prevent division by zero */
- if (!op->frames_abs)
+ if (!frames_abs)
continue;
seq_printf(m, "rx_op: %03X %-5s ", op->can_id,
@@ -253,9 +256,9 @@ static int bcm_proc_show(struct seq_file *m, void *v)
(long long)ktime_to_us(op->kt_ival2));
seq_printf(m, "# recv %ld (%ld) => reduction: ",
- op->frames_filtered, op->frames_abs);
+ frames_filtered, frames_abs);
- reduction = 100 - (op->frames_filtered * 100) / op->frames_abs;
+ reduction = 100 - (frames_filtered * 100) / frames_abs;
seq_printf(m, "%s%ld%%\n",
(reduction == 100) ? "near " : "", reduction);
@@ -279,7 +282,8 @@ static int bcm_proc_show(struct seq_file *m, void *v)
seq_printf(m, "t2=%lld ",
(long long)ktime_to_us(op->kt_ival2));
- seq_printf(m, "# sent %ld\n", op->frames_abs);
+ seq_printf(m, "# sent %ld\n",
+ atomic_long_read(&op->frames_abs));
}
seq_putc(m, '\n');
@@ -289,6 +293,24 @@ static int bcm_proc_show(struct seq_file *m, void *v)
}
#endif /* CONFIG_PROC_FS */
+static void bcm_update_rx_stats(struct bcm_op *op)
+{
+ /* prevent overflow of the reduction% calculation in bcm_proc_show() */
+ if (atomic_long_inc_return(&op->frames_abs) > LONG_MAX / 100) {
+ atomic_long_set(&op->frames_filtered, 0);
+ atomic_long_set(&op->frames_abs, 0);
+ }
+}
+
+static void bcm_update_tx_stats(struct bcm_op *op)
+{
+ /* tx_op has no reduction% calculation - use the full range and
+ * just keep the displayed counter non-negative on overflow
+ */
+ if (atomic_long_inc_return(&op->frames_abs) == LONG_MAX)
+ atomic_long_set(&op->frames_abs, 0);
+}
+
/*
* bcm_can_tx - send the (next) CAN frame to the appropriate CAN interface
* of the given bcm tx op
@@ -340,7 +362,7 @@ static void bcm_can_tx(struct bcm_op *op, struct canfd_frame *cf)
spin_lock_bh(&op->bcm_tx_lock);
if (!err)
- op->frames_abs++;
+ bcm_update_tx_stats(op);
/* only advance the cyclic sequence if nothing reset currframe while
* we were sending - a concurrent TX_RESET_MULTI_IDX means this
@@ -500,12 +522,9 @@ static void bcm_rx_changed(struct bcm_op *op, struct canfd_frame *data)
{
struct bcm_msg_head head;
- /* update statistics */
- op->frames_filtered++;
-
- /* prevent statistics overflow */
- if (op->frames_filtered > ULONG_MAX/100)
- op->frames_filtered = op->frames_abs = 0;
+ /* update statistics (frames_filtered <= frames_abs) */
+ if (atomic_long_read(&op->frames_abs))
+ atomic_long_inc(&op->frames_filtered);
/* this element is not throttled anymore */
data->flags &= ~RX_THR;
@@ -751,24 +770,30 @@ static void bcm_rx_handler(struct sk_buff *skb, void *data)
op->rx_stamp = skb->tstamp;
/* save originator for recvfrom() */
op->rx_ifindex = skb->dev->ifindex;
- /* update statistics */
- op->frames_abs++;
- /* snapshot the flag under lock: op->flags/op->frames may be updated
- * concurrently by bcm_rx_setup().
- */
+ /* op->flags/op->frames may be updated concurrently by bcm_rx_setup() */
spin_lock_bh(&op->bcm_rx_update_lock);
+
rtr_frame = op->flags & RX_RTR_FRAME;
- if (rtr_frame)
+ if (rtr_frame) {
+ bcm_update_rx_stats(op);
+ /* snapshot RTR content under lock */
memcpy(&rtrframe, op->frames, op->cfsiz);
- spin_unlock_bh(&op->bcm_rx_update_lock);
+ spin_unlock_bh(&op->bcm_rx_update_lock);
- if (rtr_frame) {
/* send reply for RTR-request (placed in op->frames[0]) */
bcm_can_tx(op, &rtrframe);
return;
}
+ /* update statistics in the same critical section as bcm_rx_changed()
+ * below: frames_filtered must never be checked/incremented against a
+ * frames_abs snapshot from a concurrent bcm_rx_handler() call on
+ * another CPU for the same (wildcard) op, or frames_filtered can end
+ * up larger than frames_abs.
+ */
+ bcm_update_rx_stats(op);
+
/* compute flags to distinguish between own/local/remote CAN traffic */
traffic_flags = 0;
if (skb->sk) {
@@ -777,8 +802,6 @@ static void bcm_rx_handler(struct sk_buff *skb, void *data)
traffic_flags |= RX_OWN;
}
- spin_lock_bh(&op->bcm_rx_update_lock);
-
if (op->flags & RX_FILTER_ID) {
/* the easiest case */
bcm_rx_update_and_send(op, op->last_frames, rxframe,
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 018/675] can: bcm: extend bcm_tx_lock usage for data and timer updates
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (16 preceding siblings ...)
2026-07-30 14:05 ` [PATCH 6.18 017/675] can: bcm: fix CAN frame rx/tx statistics Greg Kroah-Hartman
@ 2026-07-30 14:05 ` Greg Kroah-Hartman
2026-07-30 14:05 ` [PATCH 6.18 019/675] can: bcm: validate frame length in bcm_rx_setup() for RTR replies Greg Kroah-Hartman
` (661 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:05 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Oliver Hartkopp, stable,
Marc Kleine-Budde, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Oliver Hartkopp <socketcan@hartkopp.net>
commit 12ce799f7ab1e05bd8fbf79e46f403bfe5597ebc upstream.
Stage new CAN frame content for an existing tx op into a kmalloc()'d
buffer and validate it there, mirroring the approach already used in
bcm_rx_setup(). Only copy the validated data into op->frames while
holding op->bcm_tx_lock, so bcm_can_tx() and bcm_tx_timeout_handler()
can no longer observe a partially updated or unvalidated frame.
Add a missing error path for memcpy_from_msg() when copying CAN frame
data from userspace.
Also move the kt_ival1/kt_ival2/ival1/ival2 updates in bcm_tx_setup()
under op->bcm_tx_lock, and read kt_ival1/kt_ival2/count under the same
lock in bcm_tx_set_expiry() and bcm_tx_timeout_handler(), closing the
torn 64-bit ktime_t read on 32-bit platforms.
Fixes: c2aba69d0c36 ("can: bcm: add locking for bcm_op runtime updates")
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Link: https://patch.msgid.link/20260714-bcm_fixes-v15-6-562f7e3e42da@hartkopp.net
Cc: stable@kernel.org
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/can/bcm.c | 104 ++++++++++++++++++++++++++++++++++++--------------
1 file changed, 75 insertions(+), 29 deletions(-)
diff --git a/net/can/bcm.c b/net/can/bcm.c
index 1d4323cdf48a47..d7f91afda3c85d 100644
--- a/net/can/bcm.c
+++ b/net/can/bcm.c
@@ -127,7 +127,7 @@ struct bcm_op {
struct canfd_frame last_sframe;
struct sock *sk;
struct net_device *rx_reg_dev;
- spinlock_t bcm_tx_lock; /* protect currframe/count in runtime updates */
+ spinlock_t bcm_tx_lock; /* protect tx data and timer updates */
spinlock_t bcm_rx_update_lock; /* protect filter/timer data updates */
};
@@ -467,12 +467,18 @@ static bool bcm_tx_set_expiry(struct bcm_op *op, struct hrtimer *hrt)
{
ktime_t ival;
+ spin_lock_bh(&op->bcm_tx_lock);
+
if (op->kt_ival1 && op->count)
ival = op->kt_ival1;
- else if (op->kt_ival2)
+ else if (op->kt_ival2) {
ival = op->kt_ival2;
- else
+ } else {
+ spin_unlock_bh(&op->bcm_tx_lock);
return false;
+ }
+
+ spin_unlock_bh(&op->bcm_tx_lock);
hrtimer_set_expires(hrt, ktime_add(ktime_get(), ival));
return true;
@@ -489,25 +495,47 @@ static enum hrtimer_restart bcm_tx_timeout_handler(struct hrtimer *hrtimer)
{
struct bcm_op *op = container_of(hrtimer, struct bcm_op, timer);
struct bcm_msg_head msg_head;
+ bool tx_ival1, tx_ival2;
+
+ /* snapshot kt_ival1/kt_ival2/count under lock to avoid torn
+ * ktime_t reads racing with concurrent bcm_tx_setup() updates
+ */
+ spin_lock_bh(&op->bcm_tx_lock);
+ tx_ival1 = op->kt_ival1 && (op->count > 0);
+ tx_ival2 = !!op->kt_ival2;
+ spin_unlock_bh(&op->bcm_tx_lock);
+
+ if (tx_ival1) {
+ u32 flags, count;
+ struct bcm_timeval ival1, ival2;
- if (op->kt_ival1 && (op->count > 0)) {
bcm_can_tx(op, NULL);
- if (!op->count && (op->flags & TX_COUNTEVT)) {
+ /* snapshot variables under lock to avoid torn reads racing
+ * with concurrent bcm_tx_setup() updates
+ */
+ spin_lock_bh(&op->bcm_tx_lock);
+ flags = op->flags;
+ count = op->count;
+ ival1 = op->ival1;
+ ival2 = op->ival2;
+ spin_unlock_bh(&op->bcm_tx_lock);
+
+ if (!count && (flags & TX_COUNTEVT)) {
/* create notification to user */
memset(&msg_head, 0, sizeof(msg_head));
msg_head.opcode = TX_EXPIRED;
- msg_head.flags = op->flags;
- msg_head.count = op->count;
- msg_head.ival1 = op->ival1;
- msg_head.ival2 = op->ival2;
+ msg_head.flags = flags;
+ msg_head.count = count;
+ msg_head.ival1 = ival1;
+ msg_head.ival2 = ival2;
msg_head.can_id = op->can_id;
msg_head.nframes = 0;
bcm_send_to_user(op, &msg_head, NULL, 0);
}
- } else if (op->kt_ival2) {
+ } else if (tx_ival2) {
bcm_can_tx(op, NULL);
}
@@ -1031,6 +1059,8 @@ static int bcm_tx_setup(struct bcm_msg_head *msg_head, struct msghdr *msg,
/* check the given can_id */
op = bcm_find_op(&bo->tx_ops, msg_head, ifindex);
if (op) {
+ void *new_frames;
+
/* update existing BCM operation */
/*
@@ -1041,11 +1071,23 @@ static int bcm_tx_setup(struct bcm_msg_head *msg_head, struct msghdr *msg,
if (msg_head->nframes > op->nframes)
return -E2BIG;
- /* update CAN frames content */
+ /* get new CAN frames content into a staging buffer before
+ * locking: validate and normalize the frames there so that
+ * bcm_can_tx() / bcm_tx_timeout_handler() never observe a
+ * partially updated or unvalidated frame in op->frames
+ */
+ new_frames = kmalloc(msg_head->nframes * op->cfsiz, GFP_KERNEL);
+ if (!new_frames)
+ return -ENOMEM;
+
for (i = 0; i < msg_head->nframes; i++) {
- cf = op->frames + op->cfsiz * i;
+ cf = new_frames + op->cfsiz * i;
err = memcpy_from_msg((u8 *)cf, msg, op->cfsiz);
+ if (err < 0) {
+ kfree(new_frames);
+ return err;
+ }
if (op->flags & CAN_FD_FRAME) {
if (cf->len > 64)
@@ -1055,36 +1097,38 @@ static int bcm_tx_setup(struct bcm_msg_head *msg_head, struct msghdr *msg,
err = -EINVAL;
}
- if (err < 0)
+ if (err < 0) {
+ kfree(new_frames);
return err;
+ }
if (msg_head->flags & TX_CP_CAN_ID) {
/* copy can_id into frame */
cf->can_id = msg_head->can_id;
}
}
+
+ spin_lock_bh(&op->bcm_tx_lock);
+
+ /* update CAN frames content */
+ memcpy(op->frames, new_frames, msg_head->nframes * op->cfsiz);
+
op->flags = msg_head->flags;
- /* only lock for unlikely count/nframes/currframe changes */
if (op->nframes != msg_head->nframes ||
- op->flags & TX_RESET_MULTI_IDX ||
- op->flags & SETTIMER) {
-
- spin_lock_bh(&op->bcm_tx_lock);
+ op->flags & TX_RESET_MULTI_IDX) {
+ /* potentially update changed nframes */
+ op->nframes = msg_head->nframes;
+ /* restart multiple frame transmission */
+ op->currframe = 0;
+ }
- if (op->nframes != msg_head->nframes ||
- op->flags & TX_RESET_MULTI_IDX) {
- /* potentially update changed nframes */
- op->nframes = msg_head->nframes;
- /* restart multiple frame transmission */
- op->currframe = 0;
- }
+ if (op->flags & SETTIMER)
+ op->count = msg_head->count;
- if (op->flags & SETTIMER)
- op->count = msg_head->count;
+ spin_unlock_bh(&op->bcm_tx_lock);
- spin_unlock_bh(&op->bcm_tx_lock);
- }
+ kfree(new_frames);
} else {
/* insert new BCM operation for the given can_id */
@@ -1160,10 +1204,12 @@ static int bcm_tx_setup(struct bcm_msg_head *msg_head, struct msghdr *msg,
if (op->flags & SETTIMER) {
/* set timer values */
+ spin_lock_bh(&op->bcm_tx_lock);
op->ival1 = msg_head->ival1;
op->ival2 = msg_head->ival2;
op->kt_ival1 = bcm_timeval_to_ktime(msg_head->ival1);
op->kt_ival2 = bcm_timeval_to_ktime(msg_head->ival2);
+ spin_unlock_bh(&op->bcm_tx_lock);
/* disable an active timer due to zero values? */
if (!op->kt_ival1 && !op->kt_ival2)
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 019/675] can: bcm: validate frame length in bcm_rx_setup() for RTR replies
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (17 preceding siblings ...)
2026-07-30 14:05 ` [PATCH 6.18 018/675] can: bcm: extend bcm_tx_lock usage for data and timer updates Greg Kroah-Hartman
@ 2026-07-30 14:05 ` Greg Kroah-Hartman
2026-07-30 14:05 ` [PATCH 6.18 020/675] can: bcm: add missing device refcount for CAN filter removal Greg Kroah-Hartman
` (660 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:05 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Oliver Hartkopp, stable,
Marc Kleine-Budde, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Oliver Hartkopp <socketcan@hartkopp.net>
commit 62ec41f364648be79d54d94d0d240ee326948afd upstream.
bcm_tx_setup() validates cf->len against the CAN/CAN FD DLC limits
before installing frames for TX_SETUP, but bcm_rx_setup() never did
the same for the RTR-reply frame configured via RX_SETUP with
RX_RTR_FRAME.
Fixes: ffd980f976e7 ("[CAN]: Add broadcast manager (bcm) protocol")
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Link: https://patch.msgid.link/20260714-bcm_fixes-v15-7-562f7e3e42da@hartkopp.net
Cc: stable@kernel.org
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/can/bcm.c | 59 +++++++++++++++++++++++++++++++++++----------------
1 file changed, 41 insertions(+), 18 deletions(-)
diff --git a/net/can/bcm.c b/net/can/bcm.c
index d7f91afda3c85d..2de64d7a99a216 100644
--- a/net/can/bcm.c
+++ b/net/can/bcm.c
@@ -1241,22 +1241,37 @@ static int bcm_tx_setup(struct bcm_msg_head *msg_head, struct msghdr *msg,
return err;
}
-static void bcm_rx_setup_rtr_check(struct bcm_msg_head *msg_head,
- struct bcm_op *op, void *new_frames)
+static int bcm_rx_setup_rtr_check(struct bcm_msg_head *msg_head,
+ struct bcm_op *op, void *new_frames)
{
+ struct canfd_frame *frame0 = new_frames;
+
+ if (!(msg_head->flags & RX_RTR_FRAME))
+ return 0;
+
+ /* this frame is sent out as-is by bcm_can_tx() whenever a matching
+ * remote request is received, so validate its length the same way
+ * bcm_tx_setup() validates TX_SETUP frames before installing it
+ */
+ if (msg_head->flags & CAN_FD_FRAME) {
+ if (frame0->len > 64)
+ return -EINVAL;
+ } else {
+ if (frame0->len > 8)
+ return -EINVAL;
+ }
+
/* funny feature in RX(!)_SETUP only for RTR-mode:
* copy can_id into frame BUT without RTR-flag to
* prevent a full-load-loopback-test ... ;-]
* normalize this on the staged buffer, before it is
* ever installed into op->frames.
*/
- if (msg_head->flags & RX_RTR_FRAME) {
- struct canfd_frame *frame0 = new_frames;
+ if ((msg_head->flags & TX_CP_CAN_ID) ||
+ frame0->can_id == op->can_id)
+ frame0->can_id = op->can_id & ~CAN_RTR_FLAG;
- if ((msg_head->flags & TX_CP_CAN_ID) ||
- frame0->can_id == op->can_id)
- frame0->can_id = op->can_id & ~CAN_RTR_FLAG;
- }
+ return 0;
}
/*
@@ -1319,7 +1334,11 @@ static int bcm_rx_setup(struct bcm_msg_head *msg_head, struct msghdr *msg,
return err;
}
- bcm_rx_setup_rtr_check(msg_head, op, new_frames);
+ err = bcm_rx_setup_rtr_check(msg_head, op, new_frames);
+ if (err < 0) {
+ kfree(new_frames);
+ return err;
+ }
}
spin_lock_bh(&op->bcm_rx_update_lock);
@@ -1392,16 +1411,12 @@ static int bcm_rx_setup(struct bcm_msg_head *msg_head, struct msghdr *msg,
if (msg_head->nframes) {
err = memcpy_from_msg(op->frames, msg,
msg_head->nframes * op->cfsiz);
- if (err < 0) {
- if (op->frames != &op->sframe)
- kfree(op->frames);
- if (op->last_frames != &op->last_sframe)
- kfree(op->last_frames);
- kfree(op);
- return err;
- }
+ if (err < 0)
+ goto free_op;
- bcm_rx_setup_rtr_check(msg_head, op, op->frames);
+ err = bcm_rx_setup_rtr_check(msg_head, op, op->frames);
+ if (err < 0)
+ goto free_op;
}
/* bcm_can_tx / bcm_tx_timeout_handler needs this */
@@ -1500,6 +1515,14 @@ static int bcm_rx_setup(struct bcm_msg_head *msg_head, struct msghdr *msg,
}
return msg_head->nframes * op->cfsiz + MHSIZ;
+
+free_op:
+ if (op->frames != &op->sframe)
+ kfree(op->frames);
+ if (op->last_frames != &op->last_sframe)
+ kfree(op->last_frames);
+ kfree(op);
+ return err;
}
/*
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 020/675] can: bcm: add missing device refcount for CAN filter removal
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (18 preceding siblings ...)
2026-07-30 14:05 ` [PATCH 6.18 019/675] can: bcm: validate frame length in bcm_rx_setup() for RTR replies Greg Kroah-Hartman
@ 2026-07-30 14:05 ` Greg Kroah-Hartman
2026-07-30 14:05 ` [PATCH 6.18 021/675] can: bcm: fix stale rx/tx ops after device removal Greg Kroah-Hartman
` (659 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:05 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, sashiko-bot, Oliver Hartkopp, stable,
Marc Kleine-Budde, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Oliver Hartkopp <socketcan@hartkopp.net>
commit d59948293ea34b6337ce2b5febab8510de70048c upstream.
sashiko-bot remarked a problem with a concurrent device unregistration
in isotp.c which also is present in the bcm.c code. A former fix for raw.c
commit c275a176e4b6 ("can: raw: add missing refcount for memory leak fix")
introduced a netdevice_tracker which solves the issue for bcm.c too.
bcm_release(), bcm_delete_rx_op() and bcm_notifier() relied on
dev_get_by_index(ifindex) to re-find the device for an rx_op before
unregistering its filter. If a concurrent NETDEV_UNREGISTER has already
unlisted the device from the ifindex table, that lookup fails and
can_rx_unregister() is silently skipped, leaving a stale CAN filter
pointing at the soon-to-be-freed bcm_op/socket.
Hold a netdev_hold()/netdev_put() tracked reference on op->rx_reg_dev
from the moment the rx filter is registered in bcm_rx_setup() until it
is unregistered in bcm_rx_unreg(), and use that reference directly in
bcm_release() and bcm_delete_rx_op() instead of re-looking the device
up by ifindex.
Reported-by: sashiko-bot@kernel.org
Closes: https://sashiko.dev/#/patchset/20260707094716.63578-1-socketcan@hartkopp.net
Fixes: ffd980f976e7 ("[CAN]: Add broadcast manager (bcm) protocol")
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Link: https://patch.msgid.link/20260714-bcm_fixes-v15-8-562f7e3e42da@hartkopp.net
Cc: stable@kernel.org
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/can/bcm.c | 44 ++++++++++++++++++++++++--------------------
1 file changed, 24 insertions(+), 20 deletions(-)
diff --git a/net/can/bcm.c b/net/can/bcm.c
index 2de64d7a99a216..ca0dd2229f5b86 100644
--- a/net/can/bcm.c
+++ b/net/can/bcm.c
@@ -932,6 +932,7 @@ static void bcm_rx_unreg(struct net_device *dev, struct bcm_op *op)
/* mark as removed subscription */
op->rx_reg_dev = NULL;
+ dev_put(dev);
} else
printk(KERN_ERR "can-bcm: bcm_rx_unreg: registered device "
"mismatch %p %p\n", op->rx_reg_dev, dev);
@@ -962,17 +963,14 @@ static int bcm_delete_rx_op(struct list_head *ops, struct bcm_msg_head *mh,
* Only remove subscriptions that had not
* been removed due to NETDEV_UNREGISTER
* in bcm_notifier()
+ *
+ * op->rx_reg_dev is a tracked reference taken
+ * when the subscription was registered, so it
+ * stays valid here even if a concurrent
+ * NETDEV_UNREGISTER already unlisted the dev.
*/
- if (op->rx_reg_dev) {
- struct net_device *dev;
-
- dev = dev_get_by_index(sock_net(op->sk),
- op->ifindex);
- if (dev) {
- bcm_rx_unreg(dev, op);
- dev_put(dev);
- }
- }
+ if (op->rx_reg_dev)
+ bcm_rx_unreg(op->rx_reg_dev, op);
} else
can_rx_unregister(sock_net(op->sk), NULL,
op->can_id,
@@ -1491,7 +1489,15 @@ static int bcm_rx_setup(struct bcm_msg_head *msg_head, struct msghdr *msg,
bcm_rx_handler, op,
"bcm", sk);
- op->rx_reg_dev = dev;
+ /* keep a reference so that a later
+ * unregister can safely reach the device even
+ * if a concurrent NETDEV_UNREGISTER has
+ * already unlisted it by ifindex
+ */
+ if (!err) {
+ op->rx_reg_dev = dev;
+ dev_hold(dev);
+ }
dev_put(dev);
} else {
/* the requested device is gone - do not
@@ -1864,16 +1870,14 @@ static int bcm_release(struct socket *sock)
* Only remove subscriptions that had not
* been removed due to NETDEV_UNREGISTER
* in bcm_notifier()
+ *
+ * op->rx_reg_dev is a tracked reference taken
+ * when the subscription was registered, so it
+ * stays valid here even if a concurrent
+ * NETDEV_UNREGISTER already unlisted the device.
*/
- if (op->rx_reg_dev) {
- struct net_device *dev;
-
- dev = dev_get_by_index(net, op->ifindex);
- if (dev) {
- bcm_rx_unreg(dev, op);
- dev_put(dev);
- }
- }
+ if (op->rx_reg_dev)
+ bcm_rx_unreg(op->rx_reg_dev, op);
} else
can_rx_unregister(net, NULL, op->can_id,
REGMASK(op->can_id),
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 021/675] can: bcm: fix stale rx/tx ops after device removal
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (19 preceding siblings ...)
2026-07-30 14:05 ` [PATCH 6.18 020/675] can: bcm: add missing device refcount for CAN filter removal Greg Kroah-Hartman
@ 2026-07-30 14:05 ` Greg Kroah-Hartman
2026-07-30 14:05 ` [PATCH 6.18 022/675] can: bcm: fix data race on rx_stamp/rx_ifindex in bcm_rx_handler() Greg Kroah-Hartman
` (658 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:05 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, sashiko-bot, Oliver Hartkopp, stable,
Marc Kleine-Budde, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Oliver Hartkopp <socketcan@hartkopp.net>
commit 3b762c0d950383ab7a002686c9136b9aa55d2d70 upstream.
RX: an RX_SETUP update(!) for an existing op skipped can_rx_register()
unconditionally, even when a concurrent NETDEV_UNREGISTER had already
torn down its registration (op->rx_reg_dev == NULL). This silently
did not re-enable frame delivery for that updated filter. bcm_rx_setup()
now re-registers in that case, while leaving rx_ops with ifindex = 0
(all CAN devices) which never carry a tracked rx_reg_dev registered as-is.
TX: bcm_notify() only handled bo->rx_ops on NETDEV_UNREGISTER, leaving
tx_ops with an active cyclic transmission re-arming its hrtimer
indefinitely to execute bcm_tx_timeout_handler(). Cancelling the hrtimer
prevents the runaway timer and any injection into a later reused ifindex,
since nothing else calls bcm_can_tx() for the op until an explicit
TX_SETUP update re-arms it.
Unlike bcm_rx_unreg(), which clears the tracked rx_reg_dev for rx_ops,
the ifindex is intentionally left unchanged for tx_ops. bcm_tx_setup()
always rejects ifindex 0, so clearing it would strand the op: neither a
later TX_SETUP (bcm_find_op()) nor TX_DELETE (bcm_delete_tx_op()) could
ever find it again, since both require an exact ifindex match.
Reported-by: sashiko-bot@kernel.org
Closes: https://lore.kernel.org/linux-can/20260708094536.DDF821F00A3A@smtp.kernel.org/
Closes: https://lore.kernel.org/linux-can/20260708154039.347ED1F000E9@smtp.kernel.org/
Fixes: ffd980f976e7 ("[CAN]: Add broadcast manager (bcm) protocol")
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Link: https://patch.msgid.link/20260714-bcm_fixes-v15-9-562f7e3e42da@hartkopp.net
Cc: stable@kernel.org
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/can/bcm.c | 54 +++++++++++++++++++++++++++++++++++++++++----------
1 file changed, 44 insertions(+), 10 deletions(-)
diff --git a/net/can/bcm.c b/net/can/bcm.c
index ca0dd2229f5b86..8c138376591f37 100644
--- a/net/can/bcm.c
+++ b/net/can/bcm.c
@@ -1281,6 +1281,7 @@ static int bcm_rx_setup(struct bcm_msg_head *msg_head, struct msghdr *msg,
struct bcm_sock *bo = bcm_sk(sk);
struct bcm_op *op;
int do_rx_register;
+ int new_op = 0;
int err = 0;
if ((msg_head->flags & RX_FILTER_ID) || (!(msg_head->nframes))) {
@@ -1365,8 +1366,15 @@ static int bcm_rx_setup(struct bcm_msg_head *msg_head, struct msghdr *msg,
/* free temporary frames / kfree(NULL) is safe */
kfree(new_frames);
- /* Only an update -> do not call can_rx_register() */
- do_rx_register = 0;
+ /* Don't register a new CAN filter for the rx_op update unless
+ * a concurrent NETDEV_UNREGISTER notifier already tore down
+ * the previous registration. In this case the receiver needs
+ * to be re-registered here so that this update doesn't
+ * silently stop delivering frames for the given ifindex.
+ * Ops with ifindex = 0 (all CAN interfaces) never carry a
+ * tracked rx_reg_dev and stay registered as-is.
+ */
+ do_rx_register = (ifindex && !op->rx_reg_dev) ? 1 : 0;
} else {
/* insert new BCM operation for the given can_id */
@@ -1433,6 +1441,7 @@ static int bcm_rx_setup(struct bcm_msg_head *msg_head, struct msghdr *msg,
/* call can_rx_register() */
do_rx_register = 1;
+ new_op = 1;
} /* if ((op = bcm_find_op(&bo->rx_ops, msg_head->can_id, ifindex))) */
@@ -1446,7 +1455,7 @@ static int bcm_rx_setup(struct bcm_msg_head *msg_head, struct msghdr *msg,
if (op->flags & SETTIMER) {
/* set timers (locked) for newly created op */
- if (do_rx_register) {
+ if (new_op) {
spin_lock_bh(&op->bcm_rx_update_lock);
op->ival1 = msg_head->ival1;
op->ival2 = msg_head->ival2;
@@ -1476,7 +1485,10 @@ static int bcm_rx_setup(struct bcm_msg_head *msg_head, struct msghdr *msg,
HRTIMER_MODE_REL_SOFT);
}
- /* now we can register for can_ids, if we added a new bcm_op */
+ /* now we can register for can_ids, if we added a new bcm_op
+ * or need to re-register after a NETDEV_UNREGISTER tore down
+ * the previous registration of an existing op
+ */
if (do_rx_register) {
if (ifindex) {
struct net_device *dev;
@@ -1506,18 +1518,32 @@ static int bcm_rx_setup(struct bcm_msg_head *msg_head, struct msghdr *msg,
err = -ENODEV;
}
- } else
+ } else {
err = can_rx_register(sock_net(sk), NULL, op->can_id,
REGMASK(op->can_id),
bcm_rx_handler, op, "bcm", sk);
+ }
+
if (err) {
- /* this bcm rx op is broken -> remove it */
- bcm_remove_op(op);
+ /* newly created bcm rx op is broken -> remove it */
+ if (new_op) {
+ bcm_remove_op(op);
+ return err;
+ }
+
+ /* an existing op just stays unregistered.
+ * Cancel op->timer and (defensively) op->thrtimer.
+ * Other settings can't be reached until the next
+ * successful RX_SETUP.
+ */
+ hrtimer_cancel(&op->timer);
+ hrtimer_cancel(&op->thrtimer);
return err;
}
- /* add this bcm_op to the list of the rx_ops */
- list_add_rcu(&op->list, &bo->rx_ops);
+ /* add a new bcm_op to the list of the rx_ops */
+ if (new_op)
+ list_add_rcu(&op->list, &bo->rx_ops);
}
return msg_head->nframes * op->cfsiz + MHSIZ;
@@ -1733,11 +1759,19 @@ static void bcm_notify(struct bcm_sock *bo, unsigned long msg,
case NETDEV_UNREGISTER:
lock_sock(sk);
- /* remove device specific receive entries */
+ /* rx_ops: remove device specific receive entries */
list_for_each_entry(op, &bo->rx_ops, list)
if (op->rx_reg_dev == dev)
bcm_rx_unreg(dev, op);
+ /* tx_ops: stop device specific cyclic transmissions on the
+ * vanishing ifindex. Cancelling the timer is enough to stop
+ * cyclic bcm_can_tx() calls as there is no re-arming.
+ */
+ list_for_each_entry(op, &bo->tx_ops, list)
+ if (op->ifindex == dev->ifindex)
+ hrtimer_cancel(&op->timer);
+
/* remove device reference, if this is our bound device */
if (bo->bound && bo->ifindex == dev->ifindex) {
#if IS_ENABLED(CONFIG_PROC_FS)
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 022/675] can: bcm: fix data race on rx_stamp/rx_ifindex in bcm_rx_handler()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (20 preceding siblings ...)
2026-07-30 14:05 ` [PATCH 6.18 021/675] can: bcm: fix stale rx/tx ops after device removal Greg Kroah-Hartman
@ 2026-07-30 14:05 ` Greg Kroah-Hartman
2026-07-30 14:05 ` [PATCH 6.18 023/675] can: bcm: track a single source interface for ANYDEV timeout/throttle ops Greg Kroah-Hartman
` (657 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:05 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, sashiko-bot, Oliver Hartkopp, stable,
Marc Kleine-Budde, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Oliver Hartkopp <socketcan@hartkopp.net>
commit 58fd6cbc8541216af1d7ed272ea7ac2b66d50fd8 upstream.
For an rx op subscribed on all interfaces (ifindex == 0), the same op
is registered once in the shared per-netns wildcard filter list, so
bcm_rx_handler() can run concurrently on different CPUs for frames
arriving on different net devices.
op->rx_stamp and op->rx_ifindex were written before bcm_rx_update_lock was
taken, allowing concurrent writers to race each other - including a torn
store of the 64-bit rx_stamp on 32-bit platforms.
Beyond a torn store bcm_send_to_user() must report the timestamp/ifindex
of the very same frame whose content it is delivering. So the assignment
is placed in the same unbroken bcm_rx_update_lock section as the content
comparison.
As a side effect, the RTR-request frame feature (which never reach
bcm_send_to_user()) no longer updates rx_stamp/rx_ifindex, since only
the notification path needs them.
Fixes: ffd980f976e7 ("[CAN]: Add broadcast manager (bcm) protocol")
Reported-by: sashiko-bot@kernel.org
Closes: https://lore.kernel.org/linux-can/20260707145135.5BC831F00A3A@smtp.kernel.org/
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Link: https://patch.msgid.link/20260714-bcm_fixes-v15-10-562f7e3e42da@hartkopp.net
Cc: stable@kernel.org
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/can/bcm.c | 13 ++++++++-----
1 file changed, 8 insertions(+), 5 deletions(-)
diff --git a/net/can/bcm.c b/net/can/bcm.c
index 8c138376591f37..079a6a801f42e3 100644
--- a/net/can/bcm.c
+++ b/net/can/bcm.c
@@ -794,11 +794,6 @@ static void bcm_rx_handler(struct sk_buff *skb, void *data)
/* disable timeout */
hrtimer_cancel(&op->timer);
- /* save rx timestamp */
- op->rx_stamp = skb->tstamp;
- /* save originator for recvfrom() */
- op->rx_ifindex = skb->dev->ifindex;
-
/* op->flags/op->frames may be updated concurrently by bcm_rx_setup() */
spin_lock_bh(&op->bcm_rx_update_lock);
@@ -830,6 +825,14 @@ static void bcm_rx_handler(struct sk_buff *skb, void *data)
traffic_flags |= RX_OWN;
}
+ /* save rx timestamp and originator for recvfrom() under lock.
+ * For an op subscribed on all interfaces (ifindex == 0)
+ * bcm_rx_handler() can run concurrently on different CPUs so
+ * the CAN content and the meta data must be bundled correctly.
+ */
+ op->rx_stamp = skb->tstamp;
+ op->rx_ifindex = skb->dev->ifindex;
+
if (op->flags & RX_FILTER_ID) {
/* the easiest case */
bcm_rx_update_and_send(op, op->last_frames, rxframe,
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 023/675] can: bcm: track a single source interface for ANYDEV timeout/throttle ops
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (21 preceding siblings ...)
2026-07-30 14:05 ` [PATCH 6.18 022/675] can: bcm: fix data race on rx_stamp/rx_ifindex in bcm_rx_handler() Greg Kroah-Hartman
@ 2026-07-30 14:05 ` Greg Kroah-Hartman
2026-07-30 14:05 ` [PATCH 6.18 024/675] dmaengine: sh: rz-dmac: Move interrupt request after everything is set up Greg Kroah-Hartman
` (656 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:05 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, sashiko-bot, Oliver Hartkopp, stable,
Marc Kleine-Budde, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Oliver Hartkopp <socketcan@hartkopp.net>
commit 2f5976f54a04e9f18b25283036ac3136be453b17 upstream.
An ANYDEV rx op (ifindex == 0) with an active RX timeout and/or
throttle timer has no defined semantics when matching frames arrive
from several interfaces: bcm_rx_handler() can run concurrently for
the same op on different CPUs, racing hrtimer_cancel()/
bcm_rx_starttimer() against bcm_rx_timeout_handler() and causing
spurious RX_TIMEOUT notifications and last_frames corruption. The
same concurrency lets throttled multiplex frames from different
interfaces clobber the single rx_ifindex/rx_stamp fields shared by
the op.
Add op->if_detected to track the first interface that delivers a
matching frame while a timeout/throttle timer is configured, and
reject frames from any other interface for that op. The claim is
decided in bcm_rx_handler() before hrtimer_cancel() touches
op->timer, so a rejected frame can never disturb the claimed
interface's watchdog. RTR-mode ops are excluded via RX_RTR_FRAME,
independent of kt_ival1/kt_ival2, since those may briefly hold a
stale value from an earlier non-RTR configuration.
The claim is released in bcm_notify() on NETDEV_UNREGISTER and in
bcm_rx_setup() when SETTIMER reconfigures the timer values.
A (re-)claim is only possible on CAN devices in NETREG_REGISTERED
dev->reg_state to cover the release in bcm_notify() where reg_state
becomes NETREG_UNREGISTERING until synchronize_net().
Fixes: ffd980f976e7 ("[CAN]: Add broadcast manager (bcm) protocol")
Reported-by: sashiko-bot@kernel.org
Closes: https://lore.kernel.org/linux-can/20260709105031.1A39C1F000E9@smtp.kernel.org/
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Link: https://patch.msgid.link/20260714-bcm_fixes-v15-11-562f7e3e42da@hartkopp.net
Cc: stable@kernel.org
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/can/bcm.c | 49 ++++++++++++++++++++++++++++++++++++++++++++-----
1 file changed, 44 insertions(+), 5 deletions(-)
diff --git a/net/can/bcm.c b/net/can/bcm.c
index 079a6a801f42e3..76bc7f72742535 100644
--- a/net/can/bcm.c
+++ b/net/can/bcm.c
@@ -116,6 +116,7 @@ struct bcm_op {
struct hrtimer timer, thrtimer;
ktime_t rx_stamp, kt_ival1, kt_ival2, kt_lastmsg;
int rx_ifindex;
+ int if_detected; /* first received ifindex in ANYDEV rx_op mode */
int cfsiz;
u32 count;
u32 nframes;
@@ -791,6 +792,33 @@ static void bcm_rx_handler(struct sk_buff *skb, void *data)
return;
}
+ /* An ANYDEV op with an active RX timeout and/or throttle timer
+ * tracks a single source interface: claim the first interface that
+ * delivers a matching frame and reject frames from any other one,
+ * before hrtimer_cancel() below can touch op->timer - this avoids
+ * racing bcm_rx_timeout_handler() across concurrent interfaces.
+ * RX_RTR_FRAME ops are excluded, as kt_ival1/kt_ival2 may briefly
+ * hold a stale value from an earlier non-RTR configuration.
+ */
+ if (!op->ifindex) {
+ spin_lock_bh(&op->bcm_rx_update_lock);
+
+ if (!(op->flags & RX_RTR_FRAME) &&
+ (op->kt_ival1 || op->kt_ival2)) {
+ /* don't claim to vanishing interface */
+ if (!op->if_detected &&
+ skb->dev->reg_state == NETREG_REGISTERED)
+ op->if_detected = skb->dev->ifindex;
+
+ if (op->if_detected != skb->dev->ifindex) {
+ spin_unlock_bh(&op->bcm_rx_update_lock);
+ return;
+ }
+ }
+
+ spin_unlock_bh(&op->bcm_rx_update_lock);
+ }
+
/* disable timeout */
hrtimer_cancel(&op->timer);
@@ -825,10 +853,9 @@ static void bcm_rx_handler(struct sk_buff *skb, void *data)
traffic_flags |= RX_OWN;
}
- /* save rx timestamp and originator for recvfrom() under lock.
- * For an op subscribed on all interfaces (ifindex == 0)
- * bcm_rx_handler() can run concurrently on different CPUs so
- * the CAN content and the meta data must be bundled correctly.
+ /* save rx timestamp and originator for recvfrom() under lock: an
+ * ANYDEV op without an active timer can still run concurrently on
+ * different CPUs, so content and meta data must be bundled here.
*/
op->rx_stamp = skb->tstamp;
op->rx_ifindex = skb->dev->ifindex;
@@ -1363,6 +1390,7 @@ static int bcm_rx_setup(struct bcm_msg_head *msg_head, struct msghdr *msg,
op->kt_ival1 = bcm_timeval_to_ktime(msg_head->ival1);
op->kt_ival2 = bcm_timeval_to_ktime(msg_head->ival2);
op->kt_lastmsg = 0;
+ op->if_detected = 0; /* reclaim ifindex in ANYDEV mode */
}
spin_unlock_bh(&op->bcm_rx_update_lock);
@@ -1763,10 +1791,21 @@ static void bcm_notify(struct bcm_sock *bo, unsigned long msg,
lock_sock(sk);
/* rx_ops: remove device specific receive entries */
- list_for_each_entry(op, &bo->rx_ops, list)
+ list_for_each_entry(op, &bo->rx_ops, list) {
if (op->rx_reg_dev == dev)
bcm_rx_unreg(dev, op);
+ /* release an ANYDEV op's claim (see bcm_rx_handler())
+ * on this now confirmed-gone interface.
+ */
+ if (!op->ifindex) {
+ spin_lock_bh(&op->bcm_rx_update_lock);
+ if (op->if_detected == dev->ifindex)
+ op->if_detected = 0;
+ spin_unlock_bh(&op->bcm_rx_update_lock);
+ }
+ }
+
/* tx_ops: stop device specific cyclic transmissions on the
* vanishing ifindex. Cancelling the timer is enough to stop
* cyclic bcm_can_tx() calls as there is no re-arming.
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 024/675] dmaengine: sh: rz-dmac: Move interrupt request after everything is set up
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (22 preceding siblings ...)
2026-07-30 14:05 ` [PATCH 6.18 023/675] can: bcm: track a single source interface for ANYDEV timeout/throttle ops Greg Kroah-Hartman
@ 2026-07-30 14:05 ` Greg Kroah-Hartman
2026-07-30 14:05 ` [PATCH 6.18 025/675] gpu: host1x: Fix use-after-free in host1x_bo_clear_cached_mappings Greg Kroah-Hartman
` (655 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:05 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Frank Li, John Madieu,
Claudiu Beznea, Tommaso Merciai, Vinod Koul, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
commit 731712403ddb39d1a76a11abf339a0615bc85de7 upstream.
Once the interrupt is requested, the interrupt handler may run immediately.
Since the IRQ handler can access channel->ch_base, which is initialized
only after requesting the IRQ, this may lead to invalid memory access.
Likewise, the IRQ thread may access uninitialized data (the ld_free,
ld_queue, and ld_active lists), which may also lead to issues.
Request the interrupts only after everything is set up. To keep the error
path simpler, use dmam_alloc_coherent() instead of dma_alloc_coherent().
Fixes: 5000d37042a6 ("dmaengine: sh: Add DMAC driver for RZ/G2L SoC")
Cc: stable@vger.kernel.org
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Tested-by: John Madieu <john.madieu.xa@bp.renesas.com>
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Tested-by: Tommaso Merciai <tommaso.merciai.xr@bp.renesas.com>
Link: https://patch.msgid.link/20260526084710.3491480-2-claudiu.beznea@kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
[tm: Kept the channel->irq field in rz_dmac_chan_probe() instead of
upstream's local `irq` variable, as commit 04e227718ab8
("dmaengine: sh: rz-dmac: Make channel irq local") is not present
in this tree. Likewise kept platform_get_irq_byname() instead of
platform_get_irq_byname_optional() for the error IRQ in rz_dmac_probe(),
as commit 6b3a6b6dc074 ("dmaengine: sh: rz_dmac: make error interrupt
optional") is not present in this tree either; its early return on
failure becomes a goto err jump to match the new call order.]
Signed-off-by: Tommaso Merciai <tommaso.merciai.xr@bp.renesas.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/dma/sh/rz-dmac.c | 96 ++++++++++++++++------------------------
1 file changed, 38 insertions(+), 58 deletions(-)
diff --git a/drivers/dma/sh/rz-dmac.c b/drivers/dma/sh/rz-dmac.c
index 818d1ef6f0bf94..4db84b83177a6d 100644
--- a/drivers/dma/sh/rz-dmac.c
+++ b/drivers/dma/sh/rz-dmac.c
@@ -811,27 +811,6 @@ static int rz_dmac_chan_probe(struct rz_dmac *dmac,
channel->index = index;
channel->mid_rid = -EINVAL;
- /* Request the channel interrupt. */
- scnprintf(pdev_irqname, sizeof(pdev_irqname), "ch%u", index);
- channel->irq = platform_get_irq_byname(pdev, pdev_irqname);
- if (channel->irq < 0)
- return channel->irq;
-
- irqname = devm_kasprintf(dmac->dev, GFP_KERNEL, "%s:%u",
- dev_name(dmac->dev), index);
- if (!irqname)
- return -ENOMEM;
-
- ret = devm_request_threaded_irq(dmac->dev, channel->irq,
- rz_dmac_irq_handler,
- rz_dmac_irq_handler_thread, 0,
- irqname, channel);
- if (ret) {
- dev_err(dmac->dev, "failed to request IRQ %u (%d)\n",
- channel->irq, ret);
- return ret;
- }
-
/* Set io base address for each channel */
if (index < 8) {
channel->ch_base = dmac->base + CHANNEL_0_7_OFFSET +
@@ -844,9 +823,9 @@ static int rz_dmac_chan_probe(struct rz_dmac *dmac,
}
/* Allocate descriptors */
- lmdesc = dma_alloc_coherent(&pdev->dev,
- sizeof(struct rz_lmdesc) * DMAC_NR_LMDESC,
- &channel->lmdesc.base_dma, GFP_KERNEL);
+ lmdesc = dmam_alloc_coherent(&pdev->dev,
+ sizeof(struct rz_lmdesc) * DMAC_NR_LMDESC,
+ &channel->lmdesc.base_dma, GFP_KERNEL);
if (!lmdesc) {
dev_err(&pdev->dev, "Can't allocate memory (lmdesc)\n");
return -ENOMEM;
@@ -862,7 +841,26 @@ static int rz_dmac_chan_probe(struct rz_dmac *dmac,
INIT_LIST_HEAD(&channel->ld_free);
INIT_LIST_HEAD(&channel->ld_active);
- return 0;
+ /* Request the channel interrupt. */
+ scnprintf(pdev_irqname, sizeof(pdev_irqname), "ch%u", index);
+ channel->irq = platform_get_irq_byname(pdev, pdev_irqname);
+ if (channel->irq < 0)
+ return channel->irq;
+
+ irqname = devm_kasprintf(dmac->dev, GFP_KERNEL, "%s:%u",
+ dev_name(dmac->dev), index);
+ if (!irqname)
+ return -ENOMEM;
+
+ ret = devm_request_threaded_irq(dmac->dev, channel->irq,
+ rz_dmac_irq_handler,
+ rz_dmac_irq_handler_thread, 0,
+ irqname, channel);
+ if (ret)
+ dev_err(dmac->dev, "failed to request IRQ %u (%d)\n",
+ channel->irq, ret);
+
+ return ret;
}
static void rz_dmac_put_device(void *_dev)
@@ -932,7 +930,6 @@ static int rz_dmac_probe(struct platform_device *pdev)
const char *irqname = "error";
struct dma_device *engine;
struct rz_dmac *dmac;
- int channel_num;
int ret;
int irq;
u8 i;
@@ -964,19 +961,6 @@ static int rz_dmac_probe(struct platform_device *pdev)
return PTR_ERR(dmac->ext_base);
}
- /* Register interrupt handler for error */
- irq = platform_get_irq_byname(pdev, irqname);
- if (irq < 0)
- return irq;
-
- ret = devm_request_irq(&pdev->dev, irq, rz_dmac_irq_handler, 0,
- irqname, NULL);
- if (ret) {
- dev_err(&pdev->dev, "failed to request IRQ %u (%d)\n",
- irq, ret);
- return ret;
- }
-
/* Initialize the channels. */
INIT_LIST_HEAD(&dmac->engine.channels);
@@ -1002,6 +986,21 @@ static int rz_dmac_probe(struct platform_device *pdev)
goto err;
}
+ /* Register interrupt handler for error */
+ irq = platform_get_irq_byname(pdev, irqname);
+ if (irq < 0) {
+ ret = irq;
+ goto err;
+ }
+
+ ret = devm_request_irq(&pdev->dev, irq, rz_dmac_irq_handler, 0,
+ irqname, NULL);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to request IRQ %u (%d)\n",
+ irq, ret);
+ goto err;
+ }
+
/* Register the DMAC as a DMA provider for DT. */
ret = of_dma_controller_register(pdev->dev.of_node, rz_dmac_of_xlate,
NULL);
@@ -1040,16 +1039,6 @@ static int rz_dmac_probe(struct platform_device *pdev)
dma_register_err:
of_dma_controller_free(pdev->dev.of_node);
err:
- channel_num = i ? i - 1 : 0;
- for (i = 0; i < channel_num; i++) {
- struct rz_dmac_chan *channel = &dmac->channels[i];
-
- dma_free_coherent(&pdev->dev,
- sizeof(struct rz_lmdesc) * DMAC_NR_LMDESC,
- channel->lmdesc.base,
- channel->lmdesc.base_dma);
- }
-
reset_control_assert(dmac->rstc);
err_pm_runtime_put:
pm_runtime_put(&pdev->dev);
@@ -1062,18 +1051,9 @@ static int rz_dmac_probe(struct platform_device *pdev)
static void rz_dmac_remove(struct platform_device *pdev)
{
struct rz_dmac *dmac = platform_get_drvdata(pdev);
- unsigned int i;
dma_async_device_unregister(&dmac->engine);
of_dma_controller_free(pdev->dev.of_node);
- for (i = 0; i < dmac->n_channels; i++) {
- struct rz_dmac_chan *channel = &dmac->channels[i];
-
- dma_free_coherent(&pdev->dev,
- sizeof(struct rz_lmdesc) * DMAC_NR_LMDESC,
- channel->lmdesc.base,
- channel->lmdesc.base_dma);
- }
reset_control_assert(dmac->rstc);
pm_runtime_put(&pdev->dev);
pm_runtime_disable(&pdev->dev);
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 025/675] gpu: host1x: Fix use-after-free in host1x_bo_clear_cached_mappings
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (23 preceding siblings ...)
2026-07-30 14:05 ` [PATCH 6.18 024/675] dmaengine: sh: rz-dmac: Move interrupt request after everything is set up Greg Kroah-Hartman
@ 2026-07-30 14:05 ` Greg Kroah-Hartman
2026-07-30 14:05 ` [PATCH 6.18 026/675] crypto: tegra - Dont touch bo refcount in host1x bo pin/unpin Greg Kroah-Hartman
` (654 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:05 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Dan Carpenter, Mikko Perttunen,
Thierry Reding, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Mikko Perttunen <mperttunen@nvidia.com>
[ Upstream commit 266cddf7bd0f6c79b6c0633aef742a22bf70265b ]
__host1x_bo_unpin() drops the last reference to the mapping and frees
it, so we can't dereference mapping afterwards. The cache itself
outlives the mapping, so use the cache local variable instead.
Reported-by: Dan Carpenter <error27@gmail.com>
Closes: https://lore.kernel.org/linux-tegra/ah6ErK6f4kVudVIA@stanley.mountain/T/#u
Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: https://patch.msgid.link/20260603-host1x-bocache-leak-fix-v1-1-494101dbfd30@nvidia.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/host1x/bus.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/host1x/bus.c b/drivers/gpu/host1x/bus.c
index 3801eab63282ff..3313ead8bfcc24 100644
--- a/drivers/gpu/host1x/bus.c
+++ b/drivers/gpu/host1x/bus.c
@@ -1001,10 +1001,10 @@ void host1x_bo_clear_cached_mappings(struct host1x_bo *bo)
if (WARN_ON(!cache))
continue;
- mutex_lock(&mapping->cache->lock);
+ mutex_lock(&cache->lock);
WARN_ON(kref_read(&mapping->ref) != 1);
__host1x_bo_unpin(&mapping->ref);
- mutex_unlock(&mapping->cache->lock);
+ mutex_unlock(&cache->lock);
}
}
EXPORT_SYMBOL(host1x_bo_clear_cached_mappings);
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 026/675] crypto: tegra - Dont touch bo refcount in host1x bo pin/unpin
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (24 preceding siblings ...)
2026-07-30 14:05 ` [PATCH 6.18 025/675] gpu: host1x: Fix use-after-free in host1x_bo_clear_cached_mappings Greg Kroah-Hartman
@ 2026-07-30 14:05 ` Greg Kroah-Hartman
2026-07-30 14:05 ` [PATCH 6.18 027/675] xprtrdma: Clear receive-side ownership pointers on release Greg Kroah-Hartman
` (653 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:05 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Mikko Perttunen, Herbert Xu,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Mikko Perttunen <mperttunen@nvidia.com>
[ Upstream commit f8c9c57d750346abd213ffed2ae3cacb0268e9f1 ]
Since commit "gpu: host1x: Allow entries in BO caches to be freed",
host1x_bo_pin() and host1x_bo_unpin() handle the bo's refcount
themselves. .pin/.unpin callbacks should not adjust it.
Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/crypto/tegra/tegra-se-main.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/crypto/tegra/tegra-se-main.c b/drivers/crypto/tegra/tegra-se-main.c
index 2755f19ad05e92..77b923a6b7c18c 100644
--- a/drivers/crypto/tegra/tegra-se-main.c
+++ b/drivers/crypto/tegra/tegra-se-main.c
@@ -52,7 +52,7 @@ tegra_se_cmdbuf_pin(struct device *dev, struct host1x_bo *bo, enum dma_data_dire
return ERR_PTR(-ENOMEM);
kref_init(&map->ref);
- map->bo = host1x_bo_get(bo);
+ map->bo = bo;
map->direction = direction;
map->dev = dev;
@@ -93,7 +93,6 @@ static void tegra_se_cmdbuf_unpin(struct host1x_bo_mapping *map)
dma_unmap_sgtable(map->dev, map->sgt, map->direction, 0);
sg_free_table(map->sgt);
kfree(map->sgt);
- host1x_bo_put(map->bo);
kfree(map);
}
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 027/675] xprtrdma: Clear receive-side ownership pointers on release
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (25 preceding siblings ...)
2026-07-30 14:05 ` [PATCH 6.18 026/675] crypto: tegra - Dont touch bo refcount in host1x bo pin/unpin Greg Kroah-Hartman
@ 2026-07-30 14:05 ` Greg Kroah-Hartman
2026-07-30 14:05 ` [PATCH 6.18 028/675] Input: ims-pcu - fix heap-buffer-overflow in ims_pcu_process_data() Greg Kroah-Hartman
` (652 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:05 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Chuck Lever, Anna Schumaker,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Chuck Lever <chuck.lever@oracle.com>
[ Upstream commit 2ae8e7afbc63bf84243367f89eb43571f0345a74 ]
Three small ownership-state cleanups land the transport in a
state that lets future reviewers reason about each pointer
locally rather than tracing the whole reply path:
rpcrdma_rep_put() clears rep->rr_rqst before the rep enters
rb_free_reps so that no rep on the free list still carries a
stale rqst pointer. rpcrdma_reply_handler() and
rpcrdma_unpin_rqst() are the only sites that set rr_rqst;
rpcrdma_reply_handler() hands the rep through
rpcrdma_rep_put(), and rpcrdma_unpin_rqst() NULLs rr_rqst
directly because its error path abandons the rep for
teardown cleanup rather than returning it to rb_free_reps.
rpcrdma_reply_put() NULLs req->rl_reply before calling
rpcrdma_rep_put(). The previous order placed the rep on
rb_free_reps while req->rl_reply still pointed at it; the
window was harmless because xprt_rdma_free_slot() holds the
req exclusively across the pair, but closing it makes the
invariant 'rep on rb_free_reps implies no req references it'
strictly checkable.
rpcrdma_sendctx_unmap() and rpcrdma_sendctx_cancel() clear
req->rl_sendctx after dropping the sendctx pointer in the
sendctx ring. Without this, req->rl_sendctx survives across
Send completion and points at a sendctx that may already have
been reassigned by rpcrdma_sendctx_get_locked() to a different
req. No caller dereferences the stale pointer today --
rpcrdma_prepare_send_sges() overwrites it before the next
Send -- but a NULL is a more honest representation of 'the
Send is no longer outstanding' and lets the assertion patch
that follows trip on any future regression.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <anna.schumaker@hammerspace.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/sunrpc/xprtrdma/rpc_rdma.c | 4 ++++
net/sunrpc/xprtrdma/verbs.c | 12 ++++++++++--
2 files changed, 14 insertions(+), 2 deletions(-)
diff --git a/net/sunrpc/xprtrdma/rpc_rdma.c b/net/sunrpc/xprtrdma/rpc_rdma.c
index 5d1f96bffd7491..e2694fb03ba1b3 100644
--- a/net/sunrpc/xprtrdma/rpc_rdma.c
+++ b/net/sunrpc/xprtrdma/rpc_rdma.c
@@ -542,6 +542,7 @@ void rpcrdma_sendctx_unmap(struct rpcrdma_sendctx *sc)
rpcrdma_sendctx_dma_unmap(sc);
sc->sc_req = NULL;
+ req->rl_sendctx = NULL;
rpcrdma_req_put(req);
}
@@ -550,8 +551,11 @@ void rpcrdma_sendctx_unmap(struct rpcrdma_sendctx *sc)
*/
static void rpcrdma_sendctx_cancel(struct rpcrdma_sendctx *sc)
{
+ struct rpcrdma_req *req = sc->sc_req;
+
rpcrdma_sendctx_dma_unmap(sc);
sc->sc_req = NULL;
+ req->rl_sendctx = NULL;
}
/* Prepare an SGE for the RPC-over-RDMA transport header.
diff --git a/net/sunrpc/xprtrdma/verbs.c b/net/sunrpc/xprtrdma/verbs.c
index efd91ed249fabe..e2d3cee825cd7f 100644
--- a/net/sunrpc/xprtrdma/verbs.c
+++ b/net/sunrpc/xprtrdma/verbs.c
@@ -1080,9 +1080,15 @@ static struct rpcrdma_rep *rpcrdma_rep_get_locked(struct rpcrdma_buffer *buf)
* @buf: buffer pool
* @rep: rep to release
*
+ * The rep's transient association with an rpc_rqst, established
+ * by rpcrdma_reply_handler() and torn down here, must not survive
+ * onto rb_free_reps: rpcrdma_post_recvs() pulls reps from the free
+ * list to re-post them, and a non-NULL rr_rqst on a free-listed rep
+ * would imply the rep is still referenced by a req.
*/
void rpcrdma_rep_put(struct rpcrdma_buffer *buf, struct rpcrdma_rep *rep)
{
+ rep->rr_rqst = NULL;
llist_add(&rep->rr_node, &buf->rb_free_reps);
}
@@ -1265,9 +1271,11 @@ rpcrdma_mr_get(struct rpcrdma_xprt *r_xprt)
*/
void rpcrdma_reply_put(struct rpcrdma_buffer *buffers, struct rpcrdma_req *req)
{
- if (req->rl_reply) {
- rpcrdma_rep_put(buffers, req->rl_reply);
+ struct rpcrdma_rep *rep = req->rl_reply;
+
+ if (rep) {
req->rl_reply = NULL;
+ rpcrdma_rep_put(buffers, rep);
}
/* I2: rl_reply NULL after the put closes the
* 'rep on rb_free_reps still referenced by req' window.
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 028/675] Input: ims-pcu - fix heap-buffer-overflow in ims_pcu_process_data()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (26 preceding siblings ...)
2026-07-30 14:05 ` [PATCH 6.18 027/675] xprtrdma: Clear receive-side ownership pointers on release Greg Kroah-Hartman
@ 2026-07-30 14:05 ` Greg Kroah-Hartman
2026-07-30 14:05 ` [PATCH 6.18 029/675] Input: ims-pcu - fix logic error in packet reset Greg Kroah-Hartman
` (651 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:05 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Sanghoon Choi, Seungjin Bae,
Dmitry Torokhov, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Seungjin Bae <eeodqql09@gmail.com>
[ Upstream commit 875115b82c295277b81b6dfee7debc725f44e854 ]
The `ims_pcu_process_data()` processes incoming URB data byte by byte.
However, it fails to check if the `read_pos` index exceeds
IMS_PCU_BUF_SIZE.
If a malicious USB device sends a packet larger than IMS_PCU_BUF_SIZE,
`read_pos` will increment indefinitely. Moreover, since `read_pos` is
located immediately after `read_buf`, the attacker can overwrite
`read_pos` itself to arbitrarily control the index.
This manipulated `read_pos` is subsequently used in
`ims_pcu_handle_response()` to copy data into `cmd_buf`, leading to a
heap buffer overflow.
Specifically, an attacker can overwrite the `cmd_done.wait.head` located
at offset 136 relative to `cmd_buf` in the `ims_pcu_handle_response()`.
Consequently, when the driver calls `complete(&pcu->cmd_done)`, it
triggers a control flow hijack by using the manipulated pointer.
Fix this by adding a bounds check for `read_pos` before writing to
`read_buf`. If the packet is too long, discard it, log a warning,
and reset the parser state.
Fixes: 628329d524743 ("Input: add IMS Passenger Control Unit driver")
Co-developed-by: Sanghoon Choi <csh0052@gmail.com>
Signed-off-by: Sanghoon Choi <csh0052@gmail.com>
Signed-off-by: Seungjin Bae <eeodqql09@gmail.com>
Link: https://patch.msgid.link/20251221211442.841549-2-eeodqql09@gmail.com
[dtor: factor out resetting packet state, reset checksum as well]
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/input/misc/ims-pcu.c | 32 ++++++++++++++++++++++++++------
1 file changed, 26 insertions(+), 6 deletions(-)
diff --git a/drivers/input/misc/ims-pcu.c b/drivers/input/misc/ims-pcu.c
index 94113e14bf5995..7c837094c498ed 100644
--- a/drivers/input/misc/ims-pcu.c
+++ b/drivers/input/misc/ims-pcu.c
@@ -448,6 +448,14 @@ static void ims_pcu_handle_response(struct ims_pcu *pcu)
}
}
+static void ims_pcu_reset_packet(struct ims_pcu *pcu)
+{
+ pcu->have_stx = true;
+ pcu->have_dle = false;
+ pcu->read_pos = 0;
+ pcu->check_sum = 0;
+}
+
static void ims_pcu_process_data(struct ims_pcu *pcu, struct urb *urb)
{
int i;
@@ -460,6 +468,14 @@ static void ims_pcu_process_data(struct ims_pcu *pcu, struct urb *urb)
continue;
if (pcu->have_dle) {
+ if (pcu->read_pos >= IMS_PCU_BUF_SIZE) {
+ dev_warn(pcu->dev,
+ "Packet too long (%d bytes), discarding\n",
+ pcu->read_pos);
+ ims_pcu_reset_packet(pcu);
+ continue;
+ }
+
pcu->have_dle = false;
pcu->read_buf[pcu->read_pos++] = data;
pcu->check_sum += data;
@@ -472,10 +488,8 @@ static void ims_pcu_process_data(struct ims_pcu *pcu, struct urb *urb)
dev_warn(pcu->dev,
"Unexpected STX at byte %d, discarding old data\n",
pcu->read_pos);
+ ims_pcu_reset_packet(pcu);
pcu->have_stx = true;
- pcu->have_dle = false;
- pcu->read_pos = 0;
- pcu->check_sum = 0;
break;
case IMS_PCU_PROTOCOL_DLE:
@@ -495,12 +509,18 @@ static void ims_pcu_process_data(struct ims_pcu *pcu, struct urb *urb)
ims_pcu_handle_response(pcu);
}
- pcu->have_stx = false;
- pcu->have_dle = false;
- pcu->read_pos = 0;
+ ims_pcu_reset_packet(pcu);
break;
default:
+ if (pcu->read_pos >= IMS_PCU_BUF_SIZE) {
+ dev_warn(pcu->dev,
+ "Packet too long (%d bytes), discarding\n",
+ pcu->read_pos);
+ ims_pcu_reset_packet(pcu);
+ continue;
+ }
+
pcu->read_buf[pcu->read_pos++] = data;
pcu->check_sum += data;
break;
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 029/675] Input: ims-pcu - fix logic error in packet reset
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (27 preceding siblings ...)
2026-07-30 14:05 ` [PATCH 6.18 028/675] Input: ims-pcu - fix heap-buffer-overflow in ims_pcu_process_data() Greg Kroah-Hartman
@ 2026-07-30 14:05 ` Greg Kroah-Hartman
2026-07-30 14:06 ` [PATCH 6.18 030/675] fuse: fix writeback array overflow when max_pages is one Greg Kroah-Hartman
` (650 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:05 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Sashiko bot, Dmitry Torokhov,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Dmitry Torokhov <dmitry.torokhov@gmail.com>
[ Upstream commit 2c9b85a14abb4811e8d4773ccd13559e59792efb ]
ims_pcu_reset_packet() incorrectly sets have_stx to true, which implies
that the start-of-packet delimiter has already been received. This
causes the protocol parser to skip waiting for the next STX byte and
potentially process garbage data.
Correctly set have_stx to false when resetting the packet state.
Fixes: 875115b82c29 ("Input: ims-pcu - fix heap-buffer-overflow in ims_pcu_process_data()")
Cc: stable@vger.kernel.org
Reported-by: Sashiko bot <sashiko-bot@kernel.org>
Assisted-by: Gemini:gemini-3.1-pro
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/input/misc/ims-pcu.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/input/misc/ims-pcu.c b/drivers/input/misc/ims-pcu.c
index 7c837094c498ed..168662a2cc890c 100644
--- a/drivers/input/misc/ims-pcu.c
+++ b/drivers/input/misc/ims-pcu.c
@@ -450,7 +450,7 @@ static void ims_pcu_handle_response(struct ims_pcu *pcu)
static void ims_pcu_reset_packet(struct ims_pcu *pcu)
{
- pcu->have_stx = true;
+ pcu->have_stx = false;
pcu->have_dle = false;
pcu->read_pos = 0;
pcu->check_sum = 0;
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 030/675] fuse: fix writeback array overflow when max_pages is one
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (28 preceding siblings ...)
2026-07-30 14:05 ` [PATCH 6.18 029/675] Input: ims-pcu - fix logic error in packet reset Greg Kroah-Hartman
@ 2026-07-30 14:06 ` Greg Kroah-Hartman
2026-07-30 14:06 ` [PATCH 6.18 031/675] arm64: tegra: Remove fallback compatible for GPCDMA Greg Kroah-Hartman
` (649 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:06 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Joanne Koong, Junxi Qian,
Miklos Szeredi, Christian Brauner, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Junxi Qian <qjx1298677004@gmail.com>
[ Upstream commit c3880a7b10e487e033dc6f388bda118436566f7a ]
fuse_iomap_writeback_range() appends one folio pointer and one
fuse_folio_desc for every dirty range that is merged into the current
writeback request. The merge decision checks the byte budget against
fc->max_pages and fc->max_write, but it does not check whether the folio
and descriptor arrays still have another free slot.
This is not sufficient for fuseblk, where the filesystem block size can
be smaller than PAGE_SIZE. With writeback cache enabled and max_pages
negotiated as one, contiguous sub-page dirty ranges can fit within the
byte budget while spanning more than one folio. The next append can then
write past the one-slot folios and descs arrays.
Split the request when the number of already attached folios has reached
fc->max_pages. This keeps the folio/descriptor slot accounting in sync
with the send decision.
Fixes: ef7e7cbb323f ("fuse: use iomap for writeback")
Cc: stable@vger.kernel.org
Reviewed-by: Joanne Koong <joannelkoong@gmail.com>
Signed-off-by: Junxi Qian <qjx1298677004@gmail.com>
Link: https://patch.msgid.link/20260506122415.205340-1-qjx1298677004@gmail.com
Acked-by: Miklos Szeredi <mszeredi@redhat.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
fs/fuse/file.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index 79d1b502e73195..585dd90361b654 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -2140,7 +2140,10 @@ static bool fuse_writepage_need_send(struct fuse_conn *fc, loff_t pos,
WARN_ON(!ap->num_folios);
- /* Reached max pages */
+ /* Reached max pages or max folio slots */
+ if (ap->num_folios >= fc->max_pages)
+ return true;
+
if ((bytes + PAGE_SIZE - 1) >> PAGE_SHIFT > fc->max_pages)
return true;
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 031/675] arm64: tegra: Remove fallback compatible for GPCDMA
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (29 preceding siblings ...)
2026-07-30 14:06 ` [PATCH 6.18 030/675] fuse: fix writeback array overflow when max_pages is one Greg Kroah-Hartman
@ 2026-07-30 14:06 ` Greg Kroah-Hartman
2026-07-30 14:06 ` [PATCH 6.18 032/675] arm64: tegra: Fix CPU compatible string to cortex-a78ae on Tegra234 Greg Kroah-Hartman
` (648 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:06 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Akhil R, Jon Hunter, Thierry Reding,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Akhil R <akhilrajeev@nvidia.com>
[ Upstream commit ee7863e43228a3143398dc5bbb943c9a735a8fca ]
Remove the fallback compatible string "nvidia,tegra186-gpcdma" for GPCDMA
in Tegra264. Tegra186 compatible cannot work on Tegra264 because of the
register offset changes and absence of the reset property.
Fixes: 65ef237e4810 ("arm64: tegra: Add Tegra264 support")
Signed-off-by: Akhil R <akhilrajeev@nvidia.com>
Reviewed-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
arch/arm64/boot/dts/nvidia/tegra264.dtsi | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm64/boot/dts/nvidia/tegra264.dtsi b/arch/arm64/boot/dts/nvidia/tegra264.dtsi
index 872a69553e3c82..b16d380209a50a 100644
--- a/arch/arm64/boot/dts/nvidia/tegra264.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra264.dtsi
@@ -50,7 +50,7 @@ timer@8000000 {
};
gpcdma: dma-controller@8400000 {
- compatible = "nvidia,tegra264-gpcdma", "nvidia,tegra186-gpcdma";
+ compatible = "nvidia,tegra264-gpcdma";
reg = <0x0 0x08400000 0x0 0x210000>;
interrupts = <GIC_SPI 584 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 585 IRQ_TYPE_LEVEL_HIGH>,
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 032/675] arm64: tegra: Fix CPU compatible string to cortex-a78ae on Tegra234
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (30 preceding siblings ...)
2026-07-30 14:06 ` [PATCH 6.18 031/675] arm64: tegra: Remove fallback compatible for GPCDMA Greg Kroah-Hartman
@ 2026-07-30 14:06 ` Greg Kroah-Hartman
2026-07-30 14:06 ` [PATCH 6.18 033/675] net: dropreason: add SKB_DROP_REASON_RECURSION_LIMIT Greg Kroah-Hartman
` (647 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:06 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Sumit Gupta, Thierry Reding,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Sumit Gupta <sumitg@nvidia.com>
[ Upstream commit 0dfa1e960f86e032007882b032c5cc7d14ebe73e ]
The Tegra234 SoC uses Cortex-A78AE cores, not Cortex-A78. Update the
compatible string for all CPU nodes to match the actual hardware.
Tegra234 hardware reports:
# head /proc/cpuinfo | egrep 'implementer|part'
CPU implementer : 0x41
CPU part : 0xd42
Which maps to (from arch/arm64/include/asm/cputype.h):
#define ARM_CPU_IMP_ARM 0x41
#define ARM_CPU_PART_CORTEX_A78AE 0xD42
Fixes: a12cf5c339b08 ("arm64: tegra: Describe Tegra234 CPU hierarchy")
Signed-off-by: Sumit Gupta <sumitg@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
arch/arm64/boot/dts/nvidia/tegra234.dtsi | 24 ++++++++++++------------
1 file changed, 12 insertions(+), 12 deletions(-)
diff --git a/arch/arm64/boot/dts/nvidia/tegra234.dtsi b/arch/arm64/boot/dts/nvidia/tegra234.dtsi
index 5b245977d6a037..345587fa1d9ad0 100644
--- a/arch/arm64/boot/dts/nvidia/tegra234.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra234.dtsi
@@ -5345,7 +5345,7 @@ cpus {
#size-cells = <0>;
cpu0_0: cpu@0 {
- compatible = "arm,cortex-a78";
+ compatible = "arm,cortex-a78ae";
device_type = "cpu";
reg = <0x00000>;
@@ -5364,7 +5364,7 @@ cpu0_0: cpu@0 {
};
cpu0_1: cpu@100 {
- compatible = "arm,cortex-a78";
+ compatible = "arm,cortex-a78ae";
device_type = "cpu";
reg = <0x00100>;
@@ -5383,7 +5383,7 @@ cpu0_1: cpu@100 {
};
cpu0_2: cpu@200 {
- compatible = "arm,cortex-a78";
+ compatible = "arm,cortex-a78ae";
device_type = "cpu";
reg = <0x00200>;
@@ -5402,7 +5402,7 @@ cpu0_2: cpu@200 {
};
cpu0_3: cpu@300 {
- compatible = "arm,cortex-a78";
+ compatible = "arm,cortex-a78ae";
device_type = "cpu";
reg = <0x00300>;
@@ -5421,7 +5421,7 @@ cpu0_3: cpu@300 {
};
cpu1_0: cpu@10000 {
- compatible = "arm,cortex-a78";
+ compatible = "arm,cortex-a78ae";
device_type = "cpu";
reg = <0x10000>;
@@ -5440,7 +5440,7 @@ cpu1_0: cpu@10000 {
};
cpu1_1: cpu@10100 {
- compatible = "arm,cortex-a78";
+ compatible = "arm,cortex-a78ae";
device_type = "cpu";
reg = <0x10100>;
@@ -5459,7 +5459,7 @@ cpu1_1: cpu@10100 {
};
cpu1_2: cpu@10200 {
- compatible = "arm,cortex-a78";
+ compatible = "arm,cortex-a78ae";
device_type = "cpu";
reg = <0x10200>;
@@ -5478,7 +5478,7 @@ cpu1_2: cpu@10200 {
};
cpu1_3: cpu@10300 {
- compatible = "arm,cortex-a78";
+ compatible = "arm,cortex-a78ae";
device_type = "cpu";
reg = <0x10300>;
@@ -5497,7 +5497,7 @@ cpu1_3: cpu@10300 {
};
cpu2_0: cpu@20000 {
- compatible = "arm,cortex-a78";
+ compatible = "arm,cortex-a78ae";
device_type = "cpu";
reg = <0x20000>;
@@ -5516,7 +5516,7 @@ cpu2_0: cpu@20000 {
};
cpu2_1: cpu@20100 {
- compatible = "arm,cortex-a78";
+ compatible = "arm,cortex-a78ae";
device_type = "cpu";
reg = <0x20100>;
@@ -5535,7 +5535,7 @@ cpu2_1: cpu@20100 {
};
cpu2_2: cpu@20200 {
- compatible = "arm,cortex-a78";
+ compatible = "arm,cortex-a78ae";
device_type = "cpu";
reg = <0x20200>;
@@ -5554,7 +5554,7 @@ cpu2_2: cpu@20200 {
};
cpu2_3: cpu@20300 {
- compatible = "arm,cortex-a78";
+ compatible = "arm,cortex-a78ae";
device_type = "cpu";
reg = <0x20300>;
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 033/675] net: dropreason: add SKB_DROP_REASON_RECURSION_LIMIT
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (31 preceding siblings ...)
2026-07-30 14:06 ` [PATCH 6.18 032/675] arm64: tegra: Fix CPU compatible string to cortex-a78ae on Tegra234 Greg Kroah-Hartman
@ 2026-07-30 14:06 ` Greg Kroah-Hartman
2026-07-30 14:06 ` [PATCH 6.18 034/675] net: plumb drop reasons to __dev_queue_xmit() Greg Kroah-Hartman
` (646 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:06 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Eric Dumazet, Joe Damato,
Jakub Kicinski, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Eric Dumazet <edumazet@google.com>
[ Upstream commit d15d3de94a4766fb43d7fe7a72ed0479fb268131 ]
ip[6]tunnel_xmit() can drop packets if a too deep recursion level
is detected.
Add SKB_DROP_REASON_RECURSION_LIMIT drop reason.
We will use this reason later in __dev_queue_xmit().
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Joe Damato <joe@dama.to>
Link: https://patch.msgid.link/20260312201824.203093-2-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Stable-dep-of: 6860b467f569 ("xfrm: propagate -EINPROGRESS from validate_xmit_xfrm()")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
include/net/dropreason-core.h | 3 +++
include/net/ip6_tunnel.h | 2 +-
net/ipv4/ip_tunnel_core.c | 2 +-
3 files changed, 5 insertions(+), 2 deletions(-)
diff --git a/include/net/dropreason-core.h b/include/net/dropreason-core.h
index 58d91ccc56e0b5..de74e537b4ede4 100644
--- a/include/net/dropreason-core.h
+++ b/include/net/dropreason-core.h
@@ -129,6 +129,7 @@
FN(DUALPI2_STEP_DROP) \
FN(PSP_INPUT) \
FN(PSP_OUTPUT) \
+ FN(RECURSION_LIMIT) \
FNe(MAX)
/**
@@ -616,6 +617,8 @@ enum skb_drop_reason {
SKB_DROP_REASON_PSP_INPUT,
/** @SKB_DROP_REASON_PSP_OUTPUT: PSP output checks failed */
SKB_DROP_REASON_PSP_OUTPUT,
+ /** @SKB_DROP_REASON_RECURSION_LIMIT: Dead loop on virtual device. */
+ SKB_DROP_REASON_RECURSION_LIMIT,
/**
* @SKB_DROP_REASON_MAX: the maximum of core drop reasons, which
* shouldn't be used as a real 'reason' - only for tracing code gen
diff --git a/include/net/ip6_tunnel.h b/include/net/ip6_tunnel.h
index 359b595f1df936..b99805ee2fd14b 100644
--- a/include/net/ip6_tunnel.h
+++ b/include/net/ip6_tunnel.h
@@ -162,7 +162,7 @@ static inline void ip6tunnel_xmit(struct sock *sk, struct sk_buff *skb,
dev->name);
DEV_STATS_INC(dev, tx_errors);
}
- kfree_skb(skb);
+ kfree_skb_reason(skb, SKB_DROP_REASON_RECURSION_LIMIT);
return;
}
diff --git a/net/ipv4/ip_tunnel_core.c b/net/ipv4/ip_tunnel_core.c
index 4b5fd4b13722ca..fc993c78cbcc5e 100644
--- a/net/ipv4/ip_tunnel_core.c
+++ b/net/ipv4/ip_tunnel_core.c
@@ -65,7 +65,7 @@ void iptunnel_xmit(struct sock *sk, struct rtable *rt, struct sk_buff *skb,
DEV_STATS_INC(dev, tx_errors);
}
ip_rt_put(rt);
- kfree_skb(skb);
+ kfree_skb_reason(skb, SKB_DROP_REASON_RECURSION_LIMIT);
return;
}
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 034/675] net: plumb drop reasons to __dev_queue_xmit()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (32 preceding siblings ...)
2026-07-30 14:06 ` [PATCH 6.18 033/675] net: dropreason: add SKB_DROP_REASON_RECURSION_LIMIT Greg Kroah-Hartman
@ 2026-07-30 14:06 ` Greg Kroah-Hartman
2026-07-30 14:06 ` [PATCH 6.18 035/675] xfrm: propagate -EINPROGRESS from validate_xmit_xfrm() Greg Kroah-Hartman
` (645 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:06 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Eric Dumazet, Joe Damato,
Jakub Kicinski, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Eric Dumazet <edumazet@google.com>
[ Upstream commit 045f977dd4ebdd3ad8e96cf684917adfc5805adb ]
Add drop reasons to __dev_queue_xmit():
- SKB_DROP_REASON_DEV_READY : device is not UP.
- SKB_DROP_REASON_RECURSION_LIMIT : recursion limit on virtual device is hit.
Also add an unlikely() for the SKB_DROP_REASON_DEV_READY case,
and reduce indentation level.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Joe Damato <joe@dama.to>
Link: https://patch.msgid.link/20260312201824.203093-3-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Stable-dep-of: 6860b467f569 ("xfrm: propagate -EINPROGRESS from validate_xmit_xfrm()")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/core/dev.c | 83 ++++++++++++++++++++++++++------------------------
1 file changed, 43 insertions(+), 40 deletions(-)
diff --git a/net/core/dev.c b/net/core/dev.c
index 8dee703a0916ed..246d654551ae56 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -4702,9 +4702,10 @@ int __dev_queue_xmit(struct sk_buff *skb, struct net_device *sb_dev)
{
struct net_device *dev = skb->dev;
struct netdev_queue *txq = NULL;
- struct Qdisc *q;
- int rc = -ENOMEM;
+ enum skb_drop_reason reason;
+ int cpu, rc = -ENOMEM;
bool again = false;
+ struct Qdisc *q;
skb_reset_mac_header(skb);
skb_assert_len(skb);
@@ -4773,59 +4774,61 @@ int __dev_queue_xmit(struct sk_buff *skb, struct net_device *sb_dev)
* Check this and shot the lock. It is not prone from deadlocks.
*Either shot noqueue qdisc, it is even simpler 8)
*/
- if (dev->flags & IFF_UP) {
- int cpu = smp_processor_id(); /* ok because BHs are off */
+ if (unlikely(!(dev->flags & IFF_UP))) {
+ reason = SKB_DROP_REASON_DEV_READY;
+ goto drop;
+ }
- if (!netif_tx_owned(txq, cpu)) {
- bool is_list = false;
+ cpu = smp_processor_id(); /* ok because BHs are off */
- if (dev_xmit_recursion())
- goto recursion_alert;
+ if (likely(!netif_tx_owned(txq, cpu))) {
+ bool is_list = false;
- skb = validate_xmit_skb(skb, dev, &again);
- if (!skb)
- goto out;
+ if (dev_xmit_recursion())
+ goto recursion_alert;
- HARD_TX_LOCK(dev, txq, cpu);
+ skb = validate_xmit_skb(skb, dev, &again);
+ if (!skb)
+ goto out;
- if (!netif_xmit_stopped(txq)) {
- is_list = !!skb->next;
+ HARD_TX_LOCK(dev, txq, cpu);
- dev_xmit_recursion_inc();
- skb = dev_hard_start_xmit(skb, dev, txq, &rc);
- dev_xmit_recursion_dec();
+ if (!netif_xmit_stopped(txq)) {
+ is_list = !!skb->next;
- /* GSO segments a single SKB into
- * a list of frames. TCP expects error
- * to mean none of the data was sent.
- */
- if (is_list)
- rc = NETDEV_TX_OK;
- }
- HARD_TX_UNLOCK(dev, txq);
- if (!skb) /* xmit completed */
- goto out;
+ dev_xmit_recursion_inc();
+ skb = dev_hard_start_xmit(skb, dev, txq, &rc);
+ dev_xmit_recursion_dec();
- net_crit_ratelimited("Virtual device %s asks to queue packet!\n",
- dev->name);
- /* NETDEV_TX_BUSY or queue was stopped */
- if (!is_list)
- rc = -ENETDOWN;
- } else {
- /* Recursion is detected! It is possible,
- * unfortunately
+ /* GSO segments a single SKB into a list of frames.
+ * TCP expects error to mean none of the data was sent.
*/
-recursion_alert:
- net_crit_ratelimited("Dead loop on virtual device %s, fix it urgently!\n",
- dev->name);
- rc = -ENETDOWN;
+ if (is_list)
+ rc = NETDEV_TX_OK;
}
+ HARD_TX_UNLOCK(dev, txq);
+ if (!skb) /* xmit completed */
+ goto out;
+
+ net_crit_ratelimited("Virtual device %s asks to queue packet!\n",
+ dev->name);
+ /* NETDEV_TX_BUSY or queue was stopped */
+ if (!is_list)
+ rc = -ENETDOWN;
+ } else {
+ /* Recursion is detected! It is possible unfortunately. */
+recursion_alert:
+ net_crit_ratelimited("Dead loop on virtual device %s, fix it urgently!\n",
+ dev->name);
+ rc = -ENETDOWN;
}
+ reason = SKB_DROP_REASON_RECURSION_LIMIT;
+drop:
rcu_read_unlock_bh();
dev_core_stats_tx_dropped_inc(dev);
- kfree_skb_list(skb);
+ kfree_skb_list_reason(skb, reason);
return rc;
out:
rcu_read_unlock_bh();
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 035/675] xfrm: propagate -EINPROGRESS from validate_xmit_xfrm()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (33 preceding siblings ...)
2026-07-30 14:06 ` [PATCH 6.18 034/675] net: plumb drop reasons to __dev_queue_xmit() Greg Kroah-Hartman
@ 2026-07-30 14:06 ` Greg Kroah-Hartman
2026-07-30 14:06 ` [PATCH 6.18 036/675] xfrm: fix stale skb->prev after async crypto steals a GSO segment Greg Kroah-Hartman
` (644 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:06 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Sabrina Dubroca, Petr Wozniak,
Steffen Klassert, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Petr Wozniak <petr.wozniak@gmail.com>
[ Upstream commit 6860b467f569f732b11cbc588ae7e195e90e7e23 ]
validate_xmit_xfrm() returns NULL both when a packet is dropped and
when it is stolen by async crypto (-EINPROGRESS from ->xmit()).
Callers cannot distinguish the two cases.
f53c723902d1 ("net: Add asynchronous callbacks for xfrm on layer 2.")
changed the semantics of a NULL return from "dropped" to "stolen or
dropped", but __dev_queue_xmit() was not updated. On virtual/bridge
interfaces (noqueue qdisc) __dev_queue_xmit() initialises rc=-ENOMEM
and jumps to out: when skb is NULL, returning -ENOMEM to the caller
even though the packet will be delivered correctly via xfrm_dev_resume().
Return ERR_PTR(-EINPROGRESS) from validate_xmit_xfrm() for the async
case so callers can tell it apart from a real drop. Update
__dev_queue_xmit() to handle ERR_PTR(-EINPROGRESS) from
validate_xmit_skb() correctly. Update validate_xmit_skb_list() to
use IS_ERR_OR_NULL() so that ERR_PTR(-EINPROGRESS) is not mistakenly
added to the transmitted list.
Fixes: f53c723902d1 ("net: Add asynchronous callbacks for xfrm on layer 2.")
Suggested-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: Petr Wozniak <petr.wozniak@gmail.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/core/dev.c | 10 ++++++++--
net/xfrm/xfrm_device.c | 4 ++--
2 files changed, 10 insertions(+), 4 deletions(-)
diff --git a/net/core/dev.c b/net/core/dev.c
index 246d654551ae56..a83083e8761b1b 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -4005,6 +4005,9 @@ static struct sk_buff *validate_xmit_unreadable_skb(struct sk_buff *skb,
return NULL;
}
+/* Returns the skb on success, NULL if dropped, or ERR_PTR(-EINPROGRESS)
+ * if stolen by async xfrm crypto (delivered via xfrm_dev_resume()).
+ */
static struct sk_buff *validate_xmit_skb(struct sk_buff *skb, struct net_device *dev, bool *again)
{
netdev_features_t features;
@@ -4076,7 +4079,7 @@ struct sk_buff *validate_xmit_skb_list(struct sk_buff *skb, struct net_device *d
skb->prev = skb;
skb = validate_xmit_skb(skb, dev, again);
- if (!skb)
+ if (IS_ERR_OR_NULL(skb))
continue;
if (!head)
@@ -4788,8 +4791,11 @@ int __dev_queue_xmit(struct sk_buff *skb, struct net_device *sb_dev)
goto recursion_alert;
skb = validate_xmit_skb(skb, dev, &again);
- if (!skb)
+ if (IS_ERR_OR_NULL(skb)) {
+ if (PTR_ERR(skb) == -EINPROGRESS)
+ rc = NET_XMIT_SUCCESS;
goto out;
+ }
HARD_TX_LOCK(dev, txq, cpu);
diff --git a/net/xfrm/xfrm_device.c b/net/xfrm/xfrm_device.c
index 550457e4c4f01d..8b526e3676389a 100644
--- a/net/xfrm/xfrm_device.c
+++ b/net/xfrm/xfrm_device.c
@@ -182,7 +182,7 @@ struct sk_buff *validate_xmit_xfrm(struct sk_buff *skb, netdev_features_t featur
err = x->type_offload->xmit(x, skb, esp_features);
if (err) {
if (err == -EINPROGRESS)
- return NULL;
+ return ERR_PTR(-EINPROGRESS);
XFRM_INC_STATS(xs_net(x), LINUX_MIB_XFRMOUTSTATEPROTOERROR);
kfree_skb(skb);
@@ -224,7 +224,7 @@ struct sk_buff *validate_xmit_xfrm(struct sk_buff *skb, netdev_features_t featur
pskb = skb2;
}
- return skb;
+ return skb ? skb : ERR_PTR(-EINPROGRESS);
}
EXPORT_SYMBOL_GPL(validate_xmit_xfrm);
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 036/675] xfrm: fix stale skb->prev after async crypto steals a GSO segment
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (34 preceding siblings ...)
2026-07-30 14:06 ` [PATCH 6.18 035/675] xfrm: propagate -EINPROGRESS from validate_xmit_xfrm() Greg Kroah-Hartman
@ 2026-07-30 14:06 ` Greg Kroah-Hartman
2026-07-30 14:06 ` [PATCH 6.18 037/675] firmware: arm_ffa: Respect firmware advertised RX/TX buffer size limits Greg Kroah-Hartman
` (643 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:06 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Petr Wozniak, Steffen Klassert,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Petr Wozniak <petr.wozniak@gmail.com>
[ Upstream commit 3f4c3919baf0944ad96580467c302bc6c7758b00 ]
skb_gso_segment() leaves the segment list head with ->prev pointing at
the last segment, an invariant validate_xmit_skb_list() relies on when
it sets its tail pointer (tail = skb->prev).
When validate_xmit_xfrm() walks a GSO list and some segments are stolen
by async crypto (->xmit() returns -EINPROGRESS), those segments are
unlinked from the list but the head ->prev is never updated. If the
last segment is the one stolen, the returned head still has ->prev
pointing at it, even though it is now owned by the crypto engine and may
be freed. validate_xmit_skb_list() later does tail->next = skb, writing
through that stale pointer -- a use-after-free.
Repoint skb->prev at the last retained segment before returning.
Fixes: f53c723902d1 ("net: Add asynchronous callbacks for xfrm on layer 2.")
Signed-off-by: Petr Wozniak <petr.wozniak@gmail.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/xfrm/xfrm_device.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/net/xfrm/xfrm_device.c b/net/xfrm/xfrm_device.c
index 8b526e3676389a..4719aba331cd66 100644
--- a/net/xfrm/xfrm_device.c
+++ b/net/xfrm/xfrm_device.c
@@ -224,6 +224,14 @@ struct sk_buff *validate_xmit_xfrm(struct sk_buff *skb, netdev_features_t featur
pskb = skb2;
}
+ /* skb_gso_segment() set skb->prev to the last segment, but async
+ * crypto may have stolen it above without updating ->prev. Repoint
+ * it at the last retained segment so validate_xmit_skb_list() does
+ * not chain onto a segment now owned by the crypto engine.
+ */
+ if (skb)
+ skb->prev = pskb;
+
return skb ? skb : ERR_PTR(-EINPROGRESS);
}
EXPORT_SYMBOL_GPL(validate_xmit_xfrm);
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 037/675] firmware: arm_ffa: Respect firmware advertised RX/TX buffer size limits
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (35 preceding siblings ...)
2026-07-30 14:06 ` [PATCH 6.18 036/675] xfrm: fix stale skb->prev after async crypto steals a GSO segment Greg Kroah-Hartman
@ 2026-07-30 14:06 ` Greg Kroah-Hartman
2026-07-30 14:06 ` [PATCH 6.18 038/675] IB/mad: Drop unmatched RMPP responses before reassembly Greg Kroah-Hartman
` (642 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:06 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Sudeep Holla, Seth Forshee,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Seth Forshee <sforshee@nvidia.com>
[ Upstream commit 53716a4d745f1dac7aff33f3d1494b701eb2f888 ]
FFA_FEATURES reports the minimum size and alignment boundary required
for RXTX_MAP. In FF-A v1.2 and later it can also report a maximum buffer
size, with zero meaning that no maximum is enforced.
The driver only used the minimum value and then rounded it up to PAGE_SIZE
before invoking RXTX_MAP after commit 83210251fd70 ("firmware: arm_ffa:
Use the correct buffer size during RXTX_MAP"). On systems where PAGE_SIZE
is larger than the advertised minimum, this can exceed a non-zero maximum
reported by firmware. Older implementations do not advertise a maximum and
may also reject the rounded-up size.
Decode the maximum size and clamp the page-aligned minimum to it when it
is present. If no maximum is advertised and RXTX_MAP rejects the rounded
size with INVALID_PARAMETERS, retry with the advertised minimum size.
Record drv_info->rxtx_bufsz only after RXTX_MAP succeeds so it reflects
the size registered with firmware.
While there, also update RXTX_MAP_MIN_BUFSZ() to use FIELD_GET() for
consistency.
Fixes: 83210251fd70 ("firmware: arm_ffa: Use the correct buffer size during RXTX_MAP")
Suggested-by: Sudeep Holla <sudeep.holla@kernel.org>
Signed-off-by: Seth Forshee <sforshee@nvidia.com>
Link: https://patch.msgid.link/20260602-b4-ffa-rxtx-map-fixes-v2-1-7cb06508da84@nvidia.com
(sudeep.holla: Minor rewording subject and commit message)
Signed-off-by: Sudeep Holla <sudeep.holla@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/firmware/arm_ffa/driver.c | 27 ++++++++++++++++++++-------
1 file changed, 20 insertions(+), 7 deletions(-)
diff --git a/drivers/firmware/arm_ffa/driver.c b/drivers/firmware/arm_ffa/driver.c
index 3fbc75caf0c506..c76eabb8436a85 100644
--- a/drivers/firmware/arm_ffa/driver.c
+++ b/drivers/firmware/arm_ffa/driver.c
@@ -32,6 +32,7 @@
#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/kernel.h>
+#include <linux/minmax.h>
#include <linux/module.h>
#include <linux/mm.h>
#include <linux/mutex.h>
@@ -55,7 +56,9 @@
(FIELD_PREP(SENDER_ID_MASK, (s)) | FIELD_PREP(RECEIVER_ID_MASK, (r)))
#define RXTX_MAP_MIN_BUFSZ_MASK GENMASK(1, 0)
-#define RXTX_MAP_MIN_BUFSZ(x) ((x) & RXTX_MAP_MIN_BUFSZ_MASK)
+#define RXTX_MAP_MAX_BUFSZ_MASK GENMASK(31, 16)
+#define RXTX_MAP_MIN_BUFSZ(x) (FIELD_GET(RXTX_MAP_MIN_BUFSZ_MASK, (x)))
+#define RXTX_MAP_MAX_BUFSZ(x) (FIELD_GET(RXTX_MAP_MAX_BUFSZ_MASK, (x)))
#define FFA_MAX_NOTIFICATIONS 64
@@ -2088,7 +2091,7 @@ static int __init ffa_init(void)
{
int ret;
u32 buf_sz;
- size_t rxtx_bufsz = SZ_4K;
+ size_t rxtx_min_bufsz = SZ_4K, rxtx_max_bufsz = 0, rxtx_bufsz;
ret = ffa_transport_init(&invoke_ffa_fn);
if (ret)
@@ -2111,15 +2114,18 @@ static int __init ffa_init(void)
ret = ffa_features(FFA_FN_NATIVE(RXTX_MAP), 0, &buf_sz, NULL);
if (!ret) {
if (RXTX_MAP_MIN_BUFSZ(buf_sz) == 1)
- rxtx_bufsz = SZ_64K;
+ rxtx_min_bufsz = SZ_64K;
else if (RXTX_MAP_MIN_BUFSZ(buf_sz) == 2)
- rxtx_bufsz = SZ_16K;
+ rxtx_min_bufsz = SZ_16K;
else
- rxtx_bufsz = SZ_4K;
+ rxtx_min_bufsz = SZ_4K;
+
+ rxtx_max_bufsz = RXTX_MAP_MAX_BUFSZ(buf_sz) * SZ_4K;
+ if (rxtx_max_bufsz != 0 && rxtx_max_bufsz < rxtx_min_bufsz)
+ rxtx_max_bufsz = rxtx_min_bufsz;
}
- rxtx_bufsz = PAGE_ALIGN(rxtx_bufsz);
- drv_info->rxtx_bufsz = rxtx_bufsz;
+ rxtx_bufsz = min_not_zero(PAGE_ALIGN(rxtx_min_bufsz), rxtx_max_bufsz);
drv_info->rx_buffer = alloc_pages_exact(rxtx_bufsz, GFP_KERNEL);
if (!drv_info->rx_buffer) {
ret = -ENOMEM;
@@ -2135,10 +2141,17 @@ static int __init ffa_init(void)
ret = ffa_rxtx_map(virt_to_phys(drv_info->tx_buffer),
virt_to_phys(drv_info->rx_buffer),
rxtx_bufsz / FFA_PAGE_SIZE);
+ if (ret == -EINVAL && !rxtx_max_bufsz && rxtx_min_bufsz < rxtx_bufsz) {
+ rxtx_bufsz = rxtx_min_bufsz;
+ ret = ffa_rxtx_map(virt_to_phys(drv_info->tx_buffer),
+ virt_to_phys(drv_info->rx_buffer),
+ rxtx_bufsz / FFA_PAGE_SIZE);
+ }
if (ret) {
pr_err("failed to register FFA RxTx buffers\n");
goto free_pages;
}
+ drv_info->rxtx_bufsz = rxtx_bufsz;
mutex_init(&drv_info->rx_lock);
mutex_init(&drv_info->tx_lock);
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 038/675] IB/mad: Drop unmatched RMPP responses before reassembly
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (36 preceding siblings ...)
2026-07-30 14:06 ` [PATCH 6.18 037/675] firmware: arm_ffa: Respect firmware advertised RX/TX buffer size limits Greg Kroah-Hartman
@ 2026-07-30 14:06 ` Greg Kroah-Hartman
2026-07-30 14:06 ` [PATCH 6.18 039/675] mtd: mtdswap: remove debugfs stats file on teardown Greg Kroah-Hartman
` (641 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:06 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Michael Bommarito, Leon Romanovsky,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Michael Bommarito <michael.bommarito@gmail.com>
[ Upstream commit d2e52d610b9b09694261632340b801a421e0b0c5 ]
Kernel-handled RMPP receive processing starts reassembly for active
DATA responses before the response is matched to an outstanding send.
The normal match happens later, after ib_process_rmpp_recv_wc() has
either assembled a complete message or consumed the segment.
That ordering lets an unsolicited response that routes to a kernel
RMPP agent by the high TID bits allocate or extend RMPP receive state
before the full TID and source address are checked against a real
request. A reordered burst can therefore reach the receive-side
insertion path even though the response would not match any send.
For kernel-handled RMPP DATA responses, require the existing
ib_find_send_mad() match before entering RMPP reassembly. The matcher
already checks the full TID, management class and source address/GID
against the agent wait, backlog and in-flight send lists. If there is
no match, drop the response without creating RMPP state.
This leaves the RMPP window behavior unchanged and only rejects
responses that have no corresponding request.
Fixes: fa619a77046b ("[PATCH] IB: Add RMPP implementation")
Assisted-by: Codex:gpt-5-5-xhigh
Signed-off-by: Michael Bommarito <michael.bommarito@gmail.com>
Link: https://patch.msgid.link/3170ff3bc389a930bb1641f2caa394a0b2241579.1780774907.git.michael.bommarito@gmail.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/infiniband/core/mad.c | 30 ++++++++++++++++++++++++++++++
1 file changed, 30 insertions(+)
diff --git a/drivers/infiniband/core/mad.c b/drivers/infiniband/core/mad.c
index 8f26bfb695861f..5150cd53d4435a 100644
--- a/drivers/infiniband/core/mad.c
+++ b/drivers/infiniband/core/mad.c
@@ -2031,6 +2031,24 @@ void ib_mark_mad_done(struct ib_mad_send_wr_private *mad_send_wr)
change_mad_state(mad_send_wr, IB_MAD_STATE_EARLY_RESP);
}
+static bool is_kernel_rmpp_data_response(struct ib_mad_agent_private *agent,
+ struct ib_mad_recv_wc *mad_recv_wc)
+{
+ const struct ib_mad_hdr *mad_hdr = &mad_recv_wc->recv_buf.mad->mad_hdr;
+ struct ib_rmpp_mad *rmpp_mad;
+
+ if (!ib_mad_kernel_rmpp_agent(&agent->agent) ||
+ !ib_response_mad(mad_hdr) ||
+ !ib_is_mad_class_rmpp(mad_hdr->mgmt_class))
+ return false;
+
+ rmpp_mad = (struct ib_rmpp_mad *)mad_recv_wc->recv_buf.mad;
+
+ return (ib_get_rmpp_flags(&rmpp_mad->rmpp_hdr) &
+ IB_MGMT_RMPP_FLAG_ACTIVE) &&
+ rmpp_mad->rmpp_hdr.rmpp_type == IB_MGMT_RMPP_TYPE_DATA;
+}
+
static void ib_mad_complete_recv(struct ib_mad_agent_private *mad_agent_priv,
struct ib_mad_recv_wc *mad_recv_wc)
{
@@ -2050,6 +2068,18 @@ static void ib_mad_complete_recv(struct ib_mad_agent_private *mad_agent_priv,
}
list_add(&mad_recv_wc->recv_buf.list, &mad_recv_wc->rmpp_list);
+ if (is_kernel_rmpp_data_response(mad_agent_priv, mad_recv_wc)) {
+ spin_lock_irqsave(&mad_agent_priv->lock, flags);
+ mad_send_wr = ib_find_send_mad(mad_agent_priv, mad_recv_wc);
+ spin_unlock_irqrestore(&mad_agent_priv->lock, flags);
+
+ if (!mad_send_wr) {
+ ib_free_recv_mad(mad_recv_wc);
+ deref_mad_agent(mad_agent_priv);
+ return;
+ }
+ }
+
if (ib_mad_kernel_rmpp_agent(&mad_agent_priv->agent)) {
mad_recv_wc = ib_process_rmpp_recv_wc(mad_agent_priv,
mad_recv_wc);
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 039/675] mtd: mtdswap: remove debugfs stats file on teardown
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (37 preceding siblings ...)
2026-07-30 14:06 ` [PATCH 6.18 038/675] IB/mad: Drop unmatched RMPP responses before reassembly Greg Kroah-Hartman
@ 2026-07-30 14:06 ` Greg Kroah-Hartman
2026-07-30 14:06 ` [PATCH 6.18 040/675] mtd: nand: mtk-ecc: stop on ECC idle timeouts Greg Kroah-Hartman
` (640 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:06 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Pengpeng Hou, Miquel Raynal,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Pengpeng Hou <pengpeng@iscas.ac.cn>
[ Upstream commit 66fb31358108d10245b9e4ef0eef3e7d9747055e ]
mtdswap_add_debugfs() creates an mtdswap_stats debugfs file under the
per-MTD debugfs directory, but mtdswap_remove_dev() never removes it
before freeing the mtdswap_dev.
Store the returned dentry and remove it during device teardown before the
driver-private state is freed.
Fixes: a32159024620 ("mtd: Add mtdswap block driver")
Signed-off-by: Pengpeng Hou <pengpeng@iscas.ac.cn>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/mtd/mtdswap.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/mtd/mtdswap.c b/drivers/mtd/mtdswap.c
index d8f2e5be2d315e..42ff7deace80c5 100644
--- a/drivers/mtd/mtdswap.c
+++ b/drivers/mtd/mtdswap.c
@@ -125,6 +125,7 @@ struct mtdswap_dev {
char *page_buf;
char *oob_buf;
+ struct dentry *debugfs_stats;
};
struct mtdswap_oobdata {
@@ -1262,7 +1263,8 @@ static int mtdswap_add_debugfs(struct mtdswap_dev *d)
if (IS_ERR_OR_NULL(root))
return -1;
- debugfs_create_file("mtdswap_stats", S_IRUSR, root, d, &mtdswap_fops);
+ d->debugfs_stats = debugfs_create_file("mtdswap_stats", 0400, root,
+ d, &mtdswap_fops);
return 0;
}
@@ -1463,6 +1465,7 @@ static void mtdswap_remove_dev(struct mtd_blktrans_dev *dev)
{
struct mtdswap_dev *d = MTDSWAP_MBD_TO_MTDSWAP(dev);
+ debugfs_remove(d->debugfs_stats);
del_mtd_blktrans_dev(dev);
mtdswap_cleanup(d);
kfree(d);
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 040/675] mtd: nand: mtk-ecc: stop on ECC idle timeouts
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (38 preceding siblings ...)
2026-07-30 14:06 ` [PATCH 6.18 039/675] mtd: mtdswap: remove debugfs stats file on teardown Greg Kroah-Hartman
@ 2026-07-30 14:06 ` Greg Kroah-Hartman
2026-07-30 14:06 ` [PATCH 6.18 041/675] btrfs: reject free space cache with more entries than pages Greg Kroah-Hartman
` (639 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:06 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Pengpeng Hou, Miquel Raynal,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Pengpeng Hou <pengpeng@iscas.ac.cn>
[ Upstream commit 16f7ec8d5dc100eafd2c8e06cd30340a30b104a1 ]
mtk_ecc_wait_idle() logs when the encoder or decoder does not become
idle, but returns void. Callers can therefore configure a non-idle ECC
engine or read parity bytes after an unconfirmed encoder idle state.
Return the idle poll result and propagate it from the enable and encode
paths that require the engine to be idle before continuing.
Fixes: 1d6b1e464950 ("mtd: mediatek: driver for MTK Smart Device")
Signed-off-by: Pengpeng Hou <pengpeng@iscas.ac.cn>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/mtd/nand/ecc-mtk.c | 16 ++++++++++++----
1 file changed, 12 insertions(+), 4 deletions(-)
diff --git a/drivers/mtd/nand/ecc-mtk.c b/drivers/mtd/nand/ecc-mtk.c
index c75bb8b80cc1e1..96703f0a418ea2 100644
--- a/drivers/mtd/nand/ecc-mtk.c
+++ b/drivers/mtd/nand/ecc-mtk.c
@@ -123,8 +123,8 @@ static int mt7622_ecc_regs[] = {
[ECC_DECIRQ_STA] = 0x144,
};
-static inline void mtk_ecc_wait_idle(struct mtk_ecc *ecc,
- enum mtk_ecc_operation op)
+static inline int mtk_ecc_wait_idle(struct mtk_ecc *ecc,
+ enum mtk_ecc_operation op)
{
struct device *dev = ecc->dev;
u32 val;
@@ -136,6 +136,8 @@ static inline void mtk_ecc_wait_idle(struct mtk_ecc *ecc,
if (ret)
dev_warn(dev, "%s NOT idle\n",
op == ECC_ENCODE ? "encoder" : "decoder");
+
+ return ret;
}
static irqreturn_t mtk_ecc_irq(int irq, void *id)
@@ -312,7 +314,11 @@ int mtk_ecc_enable(struct mtk_ecc *ecc, struct mtk_ecc_config *config)
return ret;
}
- mtk_ecc_wait_idle(ecc, op);
+ ret = mtk_ecc_wait_idle(ecc, op);
+ if (ret) {
+ mutex_unlock(&ecc->lock);
+ return ret;
+ }
ret = mtk_ecc_config(ecc, config);
if (ret) {
@@ -412,7 +418,9 @@ int mtk_ecc_encode(struct mtk_ecc *ecc, struct mtk_ecc_config *config,
if (ret)
goto timeout;
- mtk_ecc_wait_idle(ecc, ECC_ENCODE);
+ ret = mtk_ecc_wait_idle(ecc, ECC_ENCODE);
+ if (ret)
+ goto timeout;
/* Program ECC bytes to OOB: per sector oob = FDM + ECC + SPARE */
len = (config->strength * ecc->caps->parity_bits + 7) >> 3;
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 041/675] btrfs: reject free space cache with more entries than pages
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (39 preceding siblings ...)
2026-07-30 14:06 ` [PATCH 6.18 040/675] mtd: nand: mtk-ecc: stop on ECC idle timeouts Greg Kroah-Hartman
@ 2026-07-30 14:06 ` Greg Kroah-Hartman
2026-07-30 14:06 ` [PATCH 6.18 042/675] btrfs: fix root leak if its reloc root is unexpected in merge_reloc_roots() Greg Kroah-Hartman
` (638 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:06 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Weiming Shi, Qu Wenruo, Xiang Mei,
David Sterba, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Xiang Mei <xmei5@asu.edu>
[ Upstream commit a2d8d5647ed854e38f941741aea45b9eb15a6350 ]
When loading a v1 free space cache, __load_free_space_cache() takes
num_entries and num_bitmaps straight from the on-disk
btrfs_free_space_header. That header is stored in the tree_root under a key
with type 0, which the tree-checker has no case for, so neither count is
validated before the load trusts it.
The load loops num_entries times and maps the next page whenever the current
one runs out, going through io_ctl_check_crc() -> io_ctl_map_page(), which
does io_ctl->pages[io_ctl->index++]. But pages[] is allocated in
io_ctl_init() from the cache inode's i_size, not from num_entries:
num_pages = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
io_ctl->pages = kcalloc(num_pages, sizeof(struct page *), GFP_NOFS);
So if num_entries claims more records than the pages can hold, io_ctl->index
runs off the end of pages[]. The write side never hits this because
io_ctl_add_entry() and io_ctl_add_bitmap() both stop once
io_ctl->index >= io_ctl->num_pages; the read side just never had the same
check.
To trigger it, take a clean cache (num_entries = <N> here), set num_entries
in the header to 0x10000, and fix up the leaf checksum so it still passes
the tree-checker. The cache inode has i_size = 65536, so num_pages is 16 and
pages[] is a 16-pointer (kmalloc-128) array. The load now tries to read
65536 entries, io_ctl->index walks up to 16, and pages[16] is read past the
array:
BUG: KASAN: slab-out-of-bounds in io_ctl_check_crc (fs/btrfs/free-space-cache.c:420 fs/btrfs/free-space-cache.c:565)
Read of size 8 at addr ffff88800c833a80 by task kworker/u8:3/58
io_ctl_check_crc (fs/btrfs/free-space-cache.c:420 fs/btrfs/free-space-cache.c:565)
__load_free_space_cache (fs/btrfs/free-space-cache.c:655 fs/btrfs/free-space-cache.c:820)
load_free_space_cache (fs/btrfs/free-space-cache.c:1017)
caching_thread (fs/btrfs/block-group.c:880)
btrfs_work_helper (fs/btrfs/async-thread.c:312)
process_one_work
worker_thread
kthread
ret_from_fork
free-space-cache.c:420 is io_ctl_map_page(), inlined into io_ctl_check_crc()
at line 565, which is why that is the frame KASAN names. The out-of-bounds
slot is then treated as a struct page and handed to crc32c(), so the bad
read turns into a GP fault.
Add the missing check to io_ctl_check_crc(), which is where both the entry
loop and the bitmap loop end up. When num_entries is too large the load now
fails like any corrupt cache: __load_free_space_cache() drops it and rebuilds
the free space from the extent tree, so a valid cache is never rejected.
Reported-by: Weiming Shi <bestswngs@gmail.com>
Fixes: 5b0e95bf607d ("Btrfs: inline checksums into the disk free space cache")
Link: https://lore.kernel.org/linux-btrfs/CAPpSM+RMPByMCKXvM5QFKToxsyNccfuFLWMdD0mfd0wh2Ja62w@mail.gmail.com/
Assisted-by: Claude:claude-opus-4-8
Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: Xiang Mei <xmei5@asu.edu>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
fs/btrfs/free-space-cache.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c
index ab873bd6719209..9828da12765f5c 100644
--- a/fs/btrfs/free-space-cache.c
+++ b/fs/btrfs/free-space-cache.c
@@ -554,6 +554,9 @@ static int io_ctl_check_crc(struct btrfs_io_ctl *io_ctl, int index)
u32 crc = ~(u32)0;
unsigned offset = 0;
+ if (index >= io_ctl->num_pages)
+ return -EIO;
+
if (index == 0)
offset = sizeof(u32) * io_ctl->num_pages;
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 042/675] btrfs: fix root leak if its reloc root is unexpected in merge_reloc_roots()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (40 preceding siblings ...)
2026-07-30 14:06 ` [PATCH 6.18 041/675] btrfs: reject free space cache with more entries than pages Greg Kroah-Hartman
@ 2026-07-30 14:06 ` Greg Kroah-Hartman
2026-07-30 14:06 ` [PATCH 6.18 043/675] btrfs: use bool type for btrfs_path members used as booleans Greg Kroah-Hartman
` (637 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:06 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Qu Wenruo, Johannes Thumshirn,
Filipe Manana, David Sterba, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Filipe Manana <fdmanana@suse.com>
[ Upstream commit ce6050bafb4e33377dc17fcc357736bfc351180c ]
If we have an unexpected reloc_root for our root, we jump to the out label
but never drop the reference we obtained for root, resulting in a leak.
Add a missing btrfs_put_root() call.
Fixes: 24213fa46c70 ("btrfs: do proper error handling in merge_reloc_roots")
Reviewed-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
fs/btrfs/relocation.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
index fc76013b1a3e01..ea68328d289cba 100644
--- a/fs/btrfs/relocation.c
+++ b/fs/btrfs/relocation.c
@@ -1857,6 +1857,7 @@ void merge_reloc_roots(struct reloc_control *rc)
* corruption, e.g. bad reloc tree key offset.
*/
ret = -EINVAL;
+ btrfs_put_root(root);
goto out;
}
ret = merge_reloc_root(rc, root);
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 043/675] btrfs: use bool type for btrfs_path members used as booleans
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (41 preceding siblings ...)
2026-07-30 14:06 ` [PATCH 6.18 042/675] btrfs: fix root leak if its reloc root is unexpected in merge_reloc_roots() Greg Kroah-Hartman
@ 2026-07-30 14:06 ` Greg Kroah-Hartman
2026-07-30 14:06 ` [PATCH 6.18 044/675] btrfs: fallback to transaction csum tree on a commit root csum miss Greg Kroah-Hartman
` (636 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:06 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Johannes Thumshirn, Filipe Manana,
David Sterba, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Filipe Manana <fdmanana@suse.com>
[ Upstream commit d7fe41044b3ac8f9b5965de499a13ac9ae947e79 ]
Many fields of struct btrfs_path are used as booleans but their type is
an unsigned int (of one 1 bit width to save space). Change the type to
bool keeping the :1 suffix so that they combine with the previous u8
fields in order to save space. This makes the code more clear by using
explicit true/false and more in line with the preferred style, preserving
the size of the structure.
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Stable-dep-of: 3dcd50730814 ("btrfs: fallback to transaction csum tree on a commit root csum miss")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
fs/btrfs/backref.c | 16 ++++++++--------
fs/btrfs/block-group.c | 8 ++++----
fs/btrfs/ctree.c | 28 ++++++++++++++--------------
fs/btrfs/ctree.h | 16 ++++++++--------
fs/btrfs/defrag.c | 4 ++--
fs/btrfs/dev-replace.c | 4 ++--
fs/btrfs/extent-tree.c | 8 ++++----
fs/btrfs/file-item.c | 12 ++++++------
fs/btrfs/free-space-cache.c | 4 ++--
fs/btrfs/free-space-tree.c | 4 ++--
fs/btrfs/inode-item.c | 2 +-
fs/btrfs/inode.c | 4 ++--
fs/btrfs/qgroup.c | 4 ++--
fs/btrfs/raid-stripe-tree.c | 4 ++--
fs/btrfs/relocation.c | 8 ++++----
fs/btrfs/scrub.c | 20 ++++++++++----------
fs/btrfs/send.c | 14 +++++++-------
fs/btrfs/tree-log.c | 20 ++++++++++----------
fs/btrfs/volumes.c | 6 +++---
fs/btrfs/xattr.c | 2 +-
20 files changed, 94 insertions(+), 94 deletions(-)
diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c
index e050d0938dc45f..0c47b4570a7bf8 100644
--- a/fs/btrfs/backref.c
+++ b/fs/btrfs/backref.c
@@ -1408,12 +1408,12 @@ static int find_parent_nodes(struct btrfs_backref_walk_ctx *ctx,
if (!path)
return -ENOMEM;
if (!ctx->trans) {
- path->search_commit_root = 1;
- path->skip_locking = 1;
+ path->search_commit_root = true;
+ path->skip_locking = true;
}
if (ctx->time_seq == BTRFS_SEQ_LAST)
- path->skip_locking = 1;
+ path->skip_locking = true;
again:
head = NULL;
@@ -1560,7 +1560,7 @@ static int find_parent_nodes(struct btrfs_backref_walk_ctx *ctx,
btrfs_release_path(path);
- ret = add_missing_keys(ctx->fs_info, &preftrees, path->skip_locking == 0);
+ ret = add_missing_keys(ctx->fs_info, &preftrees, !path->skip_locking);
if (ret)
goto out;
@@ -2833,8 +2833,8 @@ struct btrfs_backref_iter *btrfs_backref_iter_alloc(struct btrfs_fs_info *fs_inf
}
/* Current backref iterator only supports iteration in commit root */
- ret->path->search_commit_root = 1;
- ret->path->skip_locking = 1;
+ ret->path->search_commit_root = true;
+ ret->path->skip_locking = true;
ret->fs_info = fs_info;
return ret;
@@ -3307,8 +3307,8 @@ static int handle_indirect_tree_backref(struct btrfs_trans_handle *trans,
level = cur->level + 1;
/* Search the tree to find parent blocks referring to the block */
- path->search_commit_root = 1;
- path->skip_locking = 1;
+ path->search_commit_root = true;
+ path->skip_locking = true;
path->lowest_level = level;
ret = btrfs_search_slot(NULL, root, tree_key, path, 0, 0);
path->lowest_level = 0;
diff --git a/fs/btrfs/block-group.c b/fs/btrfs/block-group.c
index 1e57f7d04c47ec..e6bac34ebe83d6 100644
--- a/fs/btrfs/block-group.c
+++ b/fs/btrfs/block-group.c
@@ -613,8 +613,8 @@ static int sample_block_group_extent_item(struct btrfs_caching_control *caching_
extent_root = btrfs_extent_root(fs_info, max_t(u64, block_group->start,
BTRFS_SUPER_INFO_OFFSET));
- path->skip_locking = 1;
- path->search_commit_root = 1;
+ path->skip_locking = true;
+ path->search_commit_root = true;
path->reada = READA_FORWARD;
search_offset = index * div_u64(block_group->length, max_index);
@@ -744,8 +744,8 @@ static int load_extent_tree_free(struct btrfs_caching_control *caching_ctl)
* root to add free space. So we skip locking and search the commit
* root, since its read-only
*/
- path->skip_locking = 1;
- path->search_commit_root = 1;
+ path->skip_locking = true;
+ path->search_commit_root = true;
path->reada = READA_FORWARD;
key.objectid = last;
diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c
index 27e2adc2ee717b..0f2e9f33dd0cbc 100644
--- a/fs/btrfs/ctree.c
+++ b/fs/btrfs/ctree.c
@@ -1709,9 +1709,9 @@ static struct extent_buffer *btrfs_search_slot_get_root(struct btrfs_root *root,
level = btrfs_header_level(b);
/*
* Ensure that all callers have set skip_locking when
- * p->search_commit_root = 1.
+ * p->search_commit_root is true.
*/
- ASSERT(p->skip_locking == 1);
+ ASSERT(p->skip_locking);
goto out;
}
@@ -3858,10 +3858,10 @@ static noinline int setup_leaf_for_split(struct btrfs_trans_handle *trans,
}
btrfs_release_path(path);
- path->keep_locks = 1;
- path->search_for_split = 1;
+ path->keep_locks = true;
+ path->search_for_split = true;
ret = btrfs_search_slot(trans, root, &key, path, 0, 1);
- path->search_for_split = 0;
+ path->search_for_split = false;
if (ret > 0)
ret = -EAGAIN;
if (ret < 0)
@@ -3888,11 +3888,11 @@ static noinline int setup_leaf_for_split(struct btrfs_trans_handle *trans,
if (ret)
goto err;
- path->keep_locks = 0;
+ path->keep_locks = false;
btrfs_unlock_up_safe(path, 1);
return 0;
err:
- path->keep_locks = 0;
+ path->keep_locks = false;
return ret;
}
@@ -4610,11 +4610,11 @@ int btrfs_search_forward(struct btrfs_root *root, struct btrfs_key *min_key,
u32 nritems;
int level;
int ret = 1;
- int keep_locks = path->keep_locks;
+ const bool keep_locks = path->keep_locks;
ASSERT(!path->nowait);
ASSERT(path->lowest_level == 0);
- path->keep_locks = 1;
+ path->keep_locks = true;
again:
cur = btrfs_read_lock_root_node(root);
level = btrfs_header_level(cur);
@@ -4704,7 +4704,7 @@ int btrfs_search_forward(struct btrfs_root *root, struct btrfs_key *min_key,
* 0 is returned if another key is found, < 0 if there are any errors
* and 1 is returned if there are no higher keys in the tree
*
- * path->keep_locks should be set to 1 on the search made before
+ * path->keep_locks should be set to true on the search made before
* calling this function.
*/
int btrfs_find_next_key(struct btrfs_root *root, struct btrfs_path *path,
@@ -4803,13 +4803,13 @@ int btrfs_next_old_leaf(struct btrfs_root *root, struct btrfs_path *path,
next = NULL;
btrfs_release_path(path);
- path->keep_locks = 1;
+ path->keep_locks = true;
if (time_seq) {
ret = btrfs_search_old_slot(root, &key, path, time_seq);
} else {
if (path->need_commit_sem) {
- path->need_commit_sem = 0;
+ path->need_commit_sem = false;
need_commit_sem = true;
if (path->nowait) {
if (!down_read_trylock(&fs_info->commit_root_sem)) {
@@ -4822,7 +4822,7 @@ int btrfs_next_old_leaf(struct btrfs_root *root, struct btrfs_path *path,
}
ret = btrfs_search_slot(NULL, root, &key, path, 0, 0);
}
- path->keep_locks = 0;
+ path->keep_locks = false;
if (ret < 0)
goto done;
@@ -4961,7 +4961,7 @@ int btrfs_next_old_leaf(struct btrfs_root *root, struct btrfs_path *path,
if (need_commit_sem) {
int ret2;
- path->need_commit_sem = 1;
+ path->need_commit_sem = true;
ret2 = finish_need_commit_sem_search(path);
up_read(&fs_info->commit_root_sem);
if (ret2)
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 16dd11c4853130..692370fc07b280 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -65,21 +65,21 @@ struct btrfs_path {
* set by btrfs_split_item, tells search_slot to keep all locks
* and to force calls to keep space in the nodes
*/
- unsigned int search_for_split:1;
+ bool search_for_split:1;
/* Keep some upper locks as we walk down. */
- unsigned int keep_locks:1;
- unsigned int skip_locking:1;
- unsigned int search_commit_root:1;
- unsigned int need_commit_sem:1;
- unsigned int skip_release_on_error:1;
+ bool keep_locks:1;
+ bool skip_locking:1;
+ bool search_commit_root:1;
+ bool need_commit_sem:1;
+ bool skip_release_on_error:1;
/*
* Indicate that new item (btrfs_search_slot) is extending already
* existing item and ins_len contains only the data size and not item
* header (ie. sizeof(struct btrfs_item) is not included).
*/
- unsigned int search_for_extension:1;
+ bool search_for_extension:1;
/* Stop search if any locks need to be taken (for read) */
- unsigned int nowait:1;
+ bool nowait:1;
};
#define BTRFS_PATH_AUTO_FREE(path_name) \
diff --git a/fs/btrfs/defrag.c b/fs/btrfs/defrag.c
index a4cc1bc6356227..2e3c011d410a6f 100644
--- a/fs/btrfs/defrag.c
+++ b/fs/btrfs/defrag.c
@@ -472,7 +472,7 @@ static int btrfs_defrag_leaves(struct btrfs_trans_handle *trans,
memcpy(&key, &root->defrag_progress, sizeof(key));
}
- path->keep_locks = 1;
+ path->keep_locks = true;
ret = btrfs_search_forward(root, &key, path, BTRFS_OLDEST_GENERATION);
if (ret < 0)
@@ -515,7 +515,7 @@ static int btrfs_defrag_leaves(struct btrfs_trans_handle *trans,
/*
* Now that we reallocated the node we can find the next key. Note that
* btrfs_find_next_key() can release our path and do another search
- * without COWing, this is because even with path->keep_locks = 1,
+ * without COWing, this is because even with path->keep_locks == true,
* btrfs_search_slot() / ctree.c:unlock_up() does not keeps a lock on a
* node when path->slots[node_level - 1] does not point to the last
* item or a slot beyond the last item (ctree.c:unlock_up()). Therefore
diff --git a/fs/btrfs/dev-replace.c b/fs/btrfs/dev-replace.c
index a4eaef60549eed..b6c7da8e1bc8b1 100644
--- a/fs/btrfs/dev-replace.c
+++ b/fs/btrfs/dev-replace.c
@@ -489,8 +489,8 @@ static int mark_block_group_to_copy(struct btrfs_fs_info *fs_info,
}
path->reada = READA_FORWARD;
- path->search_commit_root = 1;
- path->skip_locking = 1;
+ path->search_commit_root = true;
+ path->skip_locking = true;
key.objectid = src_dev->devid;
key.type = BTRFS_DEV_EXTENT_KEY;
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 6ef7cc116bfcca..d2d96f366dac31 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -788,7 +788,7 @@ int lookup_inline_extent_backref(struct btrfs_trans_handle *trans,
want = extent_ref_type(parent, owner);
if (insert) {
extra_size = btrfs_extent_inline_ref_size(want);
- path->search_for_extension = 1;
+ path->search_for_extension = true;
} else
extra_size = -1;
@@ -954,7 +954,7 @@ int lookup_inline_extent_backref(struct btrfs_trans_handle *trans,
if (!path->keep_locks) {
btrfs_release_path(path);
- path->keep_locks = 1;
+ path->keep_locks = true;
goto again;
}
@@ -975,11 +975,11 @@ int lookup_inline_extent_backref(struct btrfs_trans_handle *trans,
*ref_ret = (struct btrfs_extent_inline_ref *)ptr;
out:
if (path->keep_locks) {
- path->keep_locks = 0;
+ path->keep_locks = false;
btrfs_unlock_up_safe(path, 1);
}
if (insert)
- path->search_for_extension = 0;
+ path->search_for_extension = false;
return ret;
}
diff --git a/fs/btrfs/file-item.c b/fs/btrfs/file-item.c
index 4b7c40f05e8f9e..a2f851eaadca06 100644
--- a/fs/btrfs/file-item.c
+++ b/fs/btrfs/file-item.c
@@ -394,8 +394,8 @@ int btrfs_lookup_bio_sums(struct btrfs_bio *bbio)
* between reading the free space cache and updating the csum tree.
*/
if (btrfs_is_free_space_inode(inode)) {
- path->search_commit_root = 1;
- path->skip_locking = 1;
+ path->search_commit_root = true;
+ path->skip_locking = true;
}
/*
@@ -423,8 +423,8 @@ int btrfs_lookup_bio_sums(struct btrfs_bio *bbio)
* from across transactions.
*/
if (bbio->csum_search_commit_root) {
- path->search_commit_root = 1;
- path->skip_locking = 1;
+ path->search_commit_root = true;
+ path->skip_locking = true;
down_read(&fs_info->commit_root_sem);
}
@@ -1168,10 +1168,10 @@ int btrfs_csum_file_blocks(struct btrfs_trans_handle *trans,
}
btrfs_release_path(path);
- path->search_for_extension = 1;
+ path->search_for_extension = true;
ret = btrfs_search_slot(trans, root, &file_key, path,
csum_size, 1);
- path->search_for_extension = 0;
+ path->search_for_extension = false;
if (ret < 0)
goto out;
diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c
index 9828da12765f5c..7ee3d8f05c1a21 100644
--- a/fs/btrfs/free-space-cache.c
+++ b/fs/btrfs/free-space-cache.c
@@ -971,8 +971,8 @@ int load_free_space_cache(struct btrfs_block_group *block_group)
path = btrfs_alloc_path();
if (!path)
return 0;
- path->search_commit_root = 1;
- path->skip_locking = 1;
+ path->search_commit_root = true;
+ path->skip_locking = true;
/*
* We must pass a path with search_commit_root set to btrfs_iget in
diff --git a/fs/btrfs/free-space-tree.c b/fs/btrfs/free-space-tree.c
index c3734892d6548b..f9ffb1c8988d90 100644
--- a/fs/btrfs/free-space-tree.c
+++ b/fs/btrfs/free-space-tree.c
@@ -1699,8 +1699,8 @@ int btrfs_load_free_space_tree(struct btrfs_caching_control *caching_ctl)
* Just like caching_thread() doesn't want to deadlock on the extent
* tree, we don't want to deadlock on the free space tree.
*/
- path->skip_locking = 1;
- path->search_commit_root = 1;
+ path->skip_locking = true;
+ path->search_commit_root = true;
path->reada = READA_FORWARD;
info = btrfs_search_free_space_info(NULL, block_group, path, 0);
diff --git a/fs/btrfs/inode-item.c b/fs/btrfs/inode-item.c
index 7e14e1bbcf389b..b73e1dd97208a8 100644
--- a/fs/btrfs/inode-item.c
+++ b/fs/btrfs/inode-item.c
@@ -312,7 +312,7 @@ int btrfs_insert_inode_ref(struct btrfs_trans_handle *trans,
if (!path)
return -ENOMEM;
- path->skip_release_on_error = 1;
+ path->skip_release_on_error = true;
ret = btrfs_insert_empty_item(trans, root, path, &key,
ins_len);
if (ret == -EEXIST) {
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 30a34cd905ba48..36f75c6a8344d4 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -7170,8 +7170,8 @@ struct extent_map *btrfs_get_extent(struct btrfs_inode *inode,
* point the commit_root has everything we need.
*/
if (btrfs_is_free_space_inode(inode)) {
- path->search_commit_root = 1;
- path->skip_locking = 1;
+ path->search_commit_root = true;
+ path->skip_locking = true;
}
ret = btrfs_lookup_file_extent(NULL, root, path, objectid, start, 0);
diff --git a/fs/btrfs/qgroup.c b/fs/btrfs/qgroup.c
index 261aa65019207f..b4c6cbbcd168e6 100644
--- a/fs/btrfs/qgroup.c
+++ b/fs/btrfs/qgroup.c
@@ -3882,8 +3882,8 @@ static void btrfs_qgroup_rescan_worker(struct btrfs_work *work)
* Rescan should only search for commit root, and any later difference
* should be recorded by qgroup
*/
- path->search_commit_root = 1;
- path->skip_locking = 1;
+ path->search_commit_root = true;
+ path->skip_locking = true;
while (!ret && !(stopped = rescan_should_stop(fs_info))) {
trans = btrfs_start_transaction(fs_info->fs_root, 0);
diff --git a/fs/btrfs/raid-stripe-tree.c b/fs/btrfs/raid-stripe-tree.c
index cc6f6095cc9fd0..f6f02463dd1a9b 100644
--- a/fs/btrfs/raid-stripe-tree.c
+++ b/fs/btrfs/raid-stripe-tree.c
@@ -394,8 +394,8 @@ int btrfs_get_raid_extent_offset(struct btrfs_fs_info *fs_info,
return -ENOMEM;
if (stripe->rst_search_commit_root) {
- path->skip_locking = 1;
- path->search_commit_root = 1;
+ path->skip_locking = true;
+ path->search_commit_root = true;
}
ret = btrfs_search_slot(NULL, stripe_root, &stripe_key, path, 0, 0);
diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
index ea68328d289cba..86430435d3acc7 100644
--- a/fs/btrfs/relocation.c
+++ b/fs/btrfs/relocation.c
@@ -3176,8 +3176,8 @@ static int __add_tree_block(struct reloc_control *rc,
key.offset = blocksize;
}
- path->search_commit_root = 1;
- path->skip_locking = 1;
+ path->search_commit_root = true;
+ path->skip_locking = true;
ret = btrfs_search_slot(NULL, rc->extent_root, &key, path, 0, 0);
if (ret < 0)
return ret;
@@ -3369,8 +3369,8 @@ int find_next_extent(struct reloc_control *rc, struct btrfs_path *path,
key.type = BTRFS_EXTENT_ITEM_KEY;
key.offset = 0;
- path->search_commit_root = 1;
- path->skip_locking = 1;
+ path->search_commit_root = true;
+ path->skip_locking = true;
ret = btrfs_search_slot(NULL, rc->extent_root, &key, path,
0, 0);
if (ret < 0)
diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c
index 16936d17166eef..368f1d44449351 100644
--- a/fs/btrfs/scrub.c
+++ b/fs/btrfs/scrub.c
@@ -463,10 +463,10 @@ static noinline_for_stack struct scrub_ctx *scrub_setup_ctx(
refcount_set(&sctx->refs, 1);
sctx->is_dev_replace = is_dev_replace;
sctx->fs_info = fs_info;
- sctx->extent_path.search_commit_root = 1;
- sctx->extent_path.skip_locking = 1;
- sctx->csum_path.search_commit_root = 1;
- sctx->csum_path.skip_locking = 1;
+ sctx->extent_path.search_commit_root = true;
+ sctx->extent_path.skip_locking = true;
+ sctx->csum_path.search_commit_root = true;
+ sctx->csum_path.skip_locking = true;
for (i = 0; i < SCRUB_TOTAL_STRIPES; i++) {
int ret;
@@ -2103,10 +2103,10 @@ static int scrub_raid56_parity_stripe(struct scrub_ctx *sctx,
* as the data stripe bytenr may be smaller than previous extent. Thus
* we have to use our own extent/csum paths.
*/
- extent_path.search_commit_root = 1;
- extent_path.skip_locking = 1;
- csum_path.search_commit_root = 1;
- csum_path.skip_locking = 1;
+ extent_path.search_commit_root = true;
+ extent_path.skip_locking = true;
+ csum_path.search_commit_root = true;
+ csum_path.skip_locking = true;
for (int i = 0; i < data_stripes; i++) {
int stripe_index;
@@ -2630,8 +2630,8 @@ int scrub_enumerate_chunks(struct scrub_ctx *sctx,
return -ENOMEM;
path->reada = READA_FORWARD;
- path->search_commit_root = 1;
- path->skip_locking = 1;
+ path->search_commit_root = true;
+ path->skip_locking = true;
key.objectid = scrub_dev->devid;
key.type = BTRFS_DEV_EXTENT_KEY;
diff --git a/fs/btrfs/send.c b/fs/btrfs/send.c
index 04473387ee8bf0..34a57f11e4bb9c 100644
--- a/fs/btrfs/send.c
+++ b/fs/btrfs/send.c
@@ -633,9 +633,9 @@ static struct btrfs_path *alloc_path_for_send(void)
path = btrfs_alloc_path();
if (!path)
return NULL;
- path->search_commit_root = 1;
- path->skip_locking = 1;
- path->need_commit_sem = 1;
+ path->search_commit_root = true;
+ path->skip_locking = true;
+ path->need_commit_sem = true;
return path;
}
@@ -7643,10 +7643,10 @@ static int btrfs_compare_trees(struct btrfs_root *left_root,
goto out;
}
- left_path->search_commit_root = 1;
- left_path->skip_locking = 1;
- right_path->search_commit_root = 1;
- right_path->skip_locking = 1;
+ left_path->search_commit_root = true;
+ left_path->skip_locking = true;
+ right_path->search_commit_root = true;
+ right_path->skip_locking = true;
/*
* Strategy: Go to the first items of both trees. Then do
diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c
index a0e12b4fb95614..f84065b69464c7 100644
--- a/fs/btrfs/tree-log.c
+++ b/fs/btrfs/tree-log.c
@@ -602,9 +602,9 @@ static int overwrite_item(struct walk_control *wc)
insert:
btrfs_release_path(wc->subvol_path);
/* try to insert the key into the destination tree */
- wc->subvol_path->skip_release_on_error = 1;
+ wc->subvol_path->skip_release_on_error = true;
ret = btrfs_insert_empty_item(trans, root, wc->subvol_path, &wc->log_key, item_size);
- wc->subvol_path->skip_release_on_error = 0;
+ wc->subvol_path->skip_release_on_error = false;
dst_eb = wc->subvol_path->nodes[0];
dst_slot = wc->subvol_path->slots[0];
@@ -5734,8 +5734,8 @@ static int btrfs_check_ref_name_override(struct extent_buffer *eb,
search_path = btrfs_alloc_path();
if (!search_path)
return -ENOMEM;
- search_path->search_commit_root = 1;
- search_path->skip_locking = 1;
+ search_path->search_commit_root = true;
+ search_path->skip_locking = true;
while (cur_offset < item_size) {
u64 parent;
@@ -6052,8 +6052,8 @@ static int conflicting_inode_is_dir(struct btrfs_root *root, u64 ino,
key.type = BTRFS_INODE_ITEM_KEY;
key.offset = 0;
- path->search_commit_root = 1;
- path->skip_locking = 1;
+ path->search_commit_root = true;
+ path->skip_locking = true;
ret = btrfs_search_slot(NULL, root, &key, path, 0, 0);
if (WARN_ON_ONCE(ret > 0)) {
@@ -6073,8 +6073,8 @@ static int conflicting_inode_is_dir(struct btrfs_root *root, u64 ino,
}
btrfs_release_path(path);
- path->search_commit_root = 0;
- path->skip_locking = 0;
+ path->search_commit_root = false;
+ path->skip_locking = false;
return ret;
}
@@ -7232,8 +7232,8 @@ static int btrfs_log_all_parents(struct btrfs_trans_handle *trans,
path = btrfs_alloc_path();
if (!path)
return -ENOMEM;
- path->skip_locking = 1;
- path->search_commit_root = 1;
+ path->skip_locking = true;
+ path->search_commit_root = true;
key.objectid = ino;
key.type = BTRFS_INODE_REF_KEY;
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 630fb5885692b1..863f69b9cf14bd 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -1839,8 +1839,8 @@ static int find_free_dev_extent(struct btrfs_device *device, u64 num_bytes,
}
path->reada = READA_FORWARD;
- path->search_commit_root = 1;
- path->skip_locking = 1;
+ path->search_commit_root = true;
+ path->skip_locking = true;
key.objectid = device->devid;
key.type = BTRFS_DEV_EXTENT_KEY;
@@ -7627,7 +7627,7 @@ int btrfs_read_chunk_tree(struct btrfs_fs_info *fs_info)
* chunk tree, to keep it simple, just skip locking on the chunk tree.
*/
ASSERT(!test_bit(BTRFS_FS_OPEN, &fs_info->flags));
- path->skip_locking = 1;
+ path->skip_locking = true;
/*
* Read all device items, and then all the chunk items. All
diff --git a/fs/btrfs/xattr.c b/fs/btrfs/xattr.c
index b6f01d6c79e7f3..b6e91e8fb7e388 100644
--- a/fs/btrfs/xattr.c
+++ b/fs/btrfs/xattr.c
@@ -97,7 +97,7 @@ int btrfs_setxattr(struct btrfs_trans_handle *trans, struct inode *inode,
path = btrfs_alloc_path();
if (!path)
return -ENOMEM;
- path->skip_release_on_error = 1;
+ path->skip_release_on_error = true;
if (!value) {
di = btrfs_lookup_xattr(trans, root, path,
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 044/675] btrfs: fallback to transaction csum tree on a commit root csum miss
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (42 preceding siblings ...)
2026-07-30 14:06 ` [PATCH 6.18 043/675] btrfs: use bool type for btrfs_path members used as booleans Greg Kroah-Hartman
@ 2026-07-30 14:06 ` Greg Kroah-Hartman
2026-07-30 14:06 ` [PATCH 6.18 045/675] firmware: arm_ffa: Fix NULL dereference in ffa_partition_info_get() Greg Kroah-Hartman
` (635 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:06 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Filipe Manana, Boris Burkov,
David Sterba, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Boris Burkov <boris@bur.io>
[ Upstream commit 3dcd50730814e5220072d2b26d0587af6bfb6dbe ]
We have been running with commit root csums enabled for some time and
have noticed a slight uptick in zero csum errors. Investigating those
revealed that they were same transaction reads of extents that were just
relocated, but the extent map generation was long ago.
It turns out that relocation intentionally does not update the extent
generation (replace_file_extents()), but must write a new csum since the
data has moved, so we must account for this with commit root csum reading.
Luckily this is a short lived condition: after the relocation transaction
the commit root will once again have the csum. So we can add a generic
fallback to the lookup to try again with the transaction csum root.
Fixes: f07b855c56b1 ("btrfs: try to search for data csums in commit root")
Reviewed-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: Boris Burkov <boris@bur.io>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
fs/btrfs/file-item.c | 26 +++++++++++++++++++++++++-
1 file changed, 25 insertions(+), 1 deletion(-)
diff --git a/fs/btrfs/file-item.c b/fs/btrfs/file-item.c
index a2f851eaadca06..9b19b33e85b687 100644
--- a/fs/btrfs/file-item.c
+++ b/fs/btrfs/file-item.c
@@ -350,6 +350,7 @@ int btrfs_lookup_bio_sums(struct btrfs_bio *bbio)
const unsigned int nblocks = orig_len >> fs_info->sectorsize_bits;
int ret = 0;
u32 bio_offset = 0;
+ bool using_commit_root = false;
if ((inode->flags & BTRFS_INODE_NODATASUM) ||
test_bit(BTRFS_FS_STATE_NO_DATA_CSUMS, &fs_info->fs_state))
@@ -423,6 +424,7 @@ int btrfs_lookup_bio_sums(struct btrfs_bio *bbio)
* from across transactions.
*/
if (bbio->csum_search_commit_root) {
+ using_commit_root = true;
path->search_commit_root = true;
path->skip_locking = true;
down_read(&fs_info->commit_root_sem);
@@ -455,6 +457,28 @@ int btrfs_lookup_bio_sums(struct btrfs_bio *bbio)
* assume this is the case.
*/
if (count == 0) {
+ /*
+ * If an extent is relocated in the current transaction
+ * then relocation writes a new csum without updating
+ * the extent map generation. Until the next commit, we
+ * will see a hole in that case, so we need to fallback
+ * to searching the transaction csum root.
+ *
+ * Note that a commit root lookup of a referenced extent can
+ * only miss, not return a stale csum. A freed extent's csum
+ * is deleted in the same transaction and its bytenr is not
+ * reusable until that transaction has committed and the
+ * extent is unpinned.
+ */
+ if (using_commit_root) {
+ up_read(&fs_info->commit_root_sem);
+ using_commit_root = false;
+ path->search_commit_root = false;
+ path->skip_locking = false;
+ btrfs_release_path(path);
+ continue;
+ }
+
memset(csum_dst, 0, csum_size);
count = 1;
@@ -473,7 +497,7 @@ int btrfs_lookup_bio_sums(struct btrfs_bio *bbio)
bio_offset += count * sectorsize;
}
- if (bbio->csum_search_commit_root)
+ if (using_commit_root)
up_read(&fs_info->commit_root_sem);
return ret;
}
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 045/675] firmware: arm_ffa: Fix NULL dereference in ffa_partition_info_get()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (43 preceding siblings ...)
2026-07-30 14:06 ` [PATCH 6.18 044/675] btrfs: fallback to transaction csum tree on a commit root csum miss Greg Kroah-Hartman
@ 2026-07-30 14:06 ` Greg Kroah-Hartman
2026-07-30 14:06 ` [PATCH 6.18 046/675] sched/ext: Avoid null ptr traversal when ->put_prev_task() is called with NULL next Greg Kroah-Hartman
` (634 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:06 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Unnathi Chalicheemala, Sudeep Holla,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Unnathi Chalicheemala <unnathi.chalicheemala@oss.qualcomm.com>
[ Upstream commit 8ae5f8e4836667fcaffdf2e3c6068b0a8b364dd8 ]
ffa_partition_info_get() passes uuid_str directly to uuid_parse()
without a NULL check. When a caller passes NULL, uuid_parse() ->
__uuid_parse() -> uuid_is_valid() dereferences the pointer, causing
a kernel panic:
| Unable to handle kernel NULL pointer dereference at virtual address
| 0000000000000040
| pc : uuid_parse+0x40/0xac
| lr : ffa_partition_info_get+0x1c/0x94 [arm_ffa]
Add a NULL guard before uuid_parse() so a NULL argument returns
-ENODEV instead of crashing. Callers are expected to always supply
a valid partition UUID, so NULL is not a supported input.
Fixes: d0c0bce83122 ("firmware: arm_ffa: Setup in-kernel users of FFA partitions")
Signed-off-by: Unnathi Chalicheemala <unnathi.chalicheemala@oss.qualcomm.com>
Link: https://patch.msgid.link/20260617-ffa_partition_nullptr_fix-v2-1-bc801b4ce34c@oss.qualcomm.com
Signed-off-by: Sudeep Holla <sudeep.holla@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/firmware/arm_ffa/driver.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/firmware/arm_ffa/driver.c b/drivers/firmware/arm_ffa/driver.c
index c76eabb8436a85..feded15bb5e921 100644
--- a/drivers/firmware/arm_ffa/driver.c
+++ b/drivers/firmware/arm_ffa/driver.c
@@ -1133,7 +1133,7 @@ static int ffa_partition_info_get(const char *uuid_str,
uuid_t uuid;
struct ffa_partition_info *pbuf;
- if (uuid_parse(uuid_str, &uuid)) {
+ if (!uuid_str || uuid_parse(uuid_str, &uuid)) {
pr_err("invalid uuid (%s)\n", uuid_str);
return -ENODEV;
}
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 046/675] sched/ext: Avoid null ptr traversal when ->put_prev_task() is called with NULL next
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (44 preceding siblings ...)
2026-07-30 14:06 ` [PATCH 6.18 045/675] firmware: arm_ffa: Fix NULL dereference in ffa_partition_info_get() Greg Kroah-Hartman
@ 2026-07-30 14:06 ` Greg Kroah-Hartman
2026-07-30 14:06 ` [PATCH 6.18 047/675] sched_ext: Dont warn on core-sched forced idle in put_prev_task_scx() Greg Kroah-Hartman
` (633 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:06 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, John Stultz, Andrea Righi, Tejun Heo,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: John Stultz <jstultz@google.com>
[ Upstream commit 12b5cd99a05f7cbc2ceb88b3b9601d404ef2236a ]
Early when trying to get sched_ext and proxy-exe working together,
I kept tripping over NULL ptr in put_prev_task_scx() on the line:
if (sched_class_above(&ext_sched_class, next->sched_class)) {
Which was due to put_prev_task() passes a NULL next, calling:
prev->sched_class->put_prev_task(rq, prev, NULL);
put_prev_task_scx() already guards for a NULL next in the
switch_class case, but doesn't seem to have a guard for
sched_class_above() check.
I can't say I understand why this doesn't trip usually without
proxy-exec. And in newer kernels there are way fewer
put_prev_task(), and I can't easily reproduce the issue now
even with proxy-exec.
But we still have one put_prev_task() call left in core.c that
seems like it could trip this, so I wanted to send this out for
consideration.
tj: put_prev_task() can be called with NULL @next; however, when @p is
queued, that doesn't happen, so this condition shouldn't currently be
triggerable. The connection isn't straightforward or necessarily reliable,
so add the NULL check even if it can't currently be triggered.
Link: http://lkml.kernel.org/r/20251206022218.1541878-1-jstultz@google.com
Signed-off-by: John Stultz <jstultz@google.com>
Reviewed-by: Andrea Righi <arighi@nvidia.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Stable-dep-of: b7d9c359e5cf ("sched_ext: Don't warn on core-sched forced idle in put_prev_task_scx()")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
kernel/sched/ext.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/sched/ext.c b/kernel/sched/ext.c
index d8280f87443310..d399494364c0a3 100644
--- a/kernel/sched/ext.c
+++ b/kernel/sched/ext.c
@@ -2396,7 +2396,7 @@ static void put_prev_task_scx(struct rq *rq, struct task_struct *p,
* ops.enqueue() that @p is the only one available for this cpu,
* which should trigger an explicit follow-up scheduling event.
*/
- if (sched_class_above(&ext_sched_class, next->sched_class)) {
+ if (next && sched_class_above(&ext_sched_class, next->sched_class)) {
WARN_ON_ONCE(!(sch->ops.flags & SCX_OPS_ENQ_LAST));
do_enqueue_task(rq, p, SCX_ENQ_LAST, -1);
} else {
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 047/675] sched_ext: Dont warn on core-sched forced idle in put_prev_task_scx()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (45 preceding siblings ...)
2026-07-30 14:06 ` [PATCH 6.18 046/675] sched/ext: Avoid null ptr traversal when ->put_prev_task() is called with NULL next Greg Kroah-Hartman
@ 2026-07-30 14:06 ` Greg Kroah-Hartman
2026-07-30 14:06 ` [PATCH 6.18 048/675] xfrm: reject optional IPTFS templates in outbound policies Greg Kroah-Hartman
` (632 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:06 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Tejun Heo, Andrea Righi, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Tejun Heo <tj@kernel.org>
[ Upstream commit b7d9c359e5cf867f7eb23df3bb1c6b9e58af24da ]
put_prev_task_scx() warns when a runnable task drops to a lower sched_class
without SCX_OPS_ENQ_LAST, on the assumption that balance_one() would have
kept it running. Core scheduling breaks that: a forced-idle SMT sibling
reschedules through the core_pick fast path in pick_next_task(), which skips
pick_task_scx() and thus balance_one(), so a runnable task can drop to idle
with ENQ_LAST unset.
Gate the warning on sched_cpu_cookie_match(): a cookie mismatch means core
scheduling forced the idle, while a match (or core scheduling off) still
catches a genuine missing-ENQ_LAST drop.
Fixes: 7c65ae81ea86 ("sched_ext: Don't call put_prev_task_scx() before picking the next task")
Signed-off-by: Tejun Heo <tj@kernel.org>
Reviewed-by: Andrea Righi <arighi@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
kernel/sched/ext.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/kernel/sched/ext.c b/kernel/sched/ext.c
index d399494364c0a3..83baf270888882 100644
--- a/kernel/sched/ext.c
+++ b/kernel/sched/ext.c
@@ -2395,9 +2395,14 @@ static void put_prev_task_scx(struct rq *rq, struct task_struct *p,
* sched_class, %SCX_OPS_ENQ_LAST must be set. Tell
* ops.enqueue() that @p is the only one available for this cpu,
* which should trigger an explicit follow-up scheduling event.
+ *
+ * Core scheduling can force this CPU idle while @p stays
+ * runnable. @p's cookie then won't match the core's, so skip
+ * the warning in that case.
*/
if (next && sched_class_above(&ext_sched_class, next->sched_class)) {
- WARN_ON_ONCE(!(sch->ops.flags & SCX_OPS_ENQ_LAST));
+ WARN_ON_ONCE(sched_cpu_cookie_match(rq, p) &&
+ !(sch->ops.flags & SCX_OPS_ENQ_LAST));
do_enqueue_task(rq, p, SCX_ENQ_LAST, -1);
} else {
do_enqueue_task(rq, p, 0, -1);
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 048/675] xfrm: reject optional IPTFS templates in outbound policies
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (46 preceding siblings ...)
2026-07-30 14:06 ` [PATCH 6.18 047/675] sched_ext: Dont warn on core-sched forced idle in put_prev_task_scx() Greg Kroah-Hartman
@ 2026-07-30 14:06 ` Greg Kroah-Hartman
2026-07-30 14:06 ` [PATCH 6.18 049/675] RDMA/cma: Fix hardware address comparison length in netevent callback Greg Kroah-Hartman
` (631 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:06 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, syzbot+0ac4d84afe1066a1f3e9,
Antony Antony, Steffen Klassert, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Antony Antony <antony.antony@secunet.com>
[ Upstream commit ea528f18231ec0f33317be57f8866913b19aba6e ]
syzbot reported a stack-out-of-bounds read in xfrm_state_find()
which flows from xfrm_tmpl_resolve_one().
Commit 3d776e31c841 ("xfrm: Reject optional tunnel/BEET mode
templates in outbound policies") disallowed optional tunnel and
BEET in outbound policies to prevent this. Later when IPTFS
added, it was not covered by that fix and can still trigger
the out-of-bounds read;
Extend the check to disallow optional IPTFS in outbound policies
as well. IPTFS should be identical to tunnel mode.
IN and FWD policies are not affected: xfrm_tmpl_resolve_one()
is only reachable via the outbound path.
Reproducer, before:
ip link add dummy0 type dummy
ip link set dummy0 up
ip addr add 10.1.1.1/24 dev dummy0
ip xfrm policy add src 10.1.1.1/32 dst 10.1.1.2/32 dir out tmpl
src fc00::dead:1 dst fc00::dead:2 proto esp reqid 1 mode iptfs
level use tmpl src fc00::dead:1 dst fc00::dead:2 proto esp reqid
2 mode transport
ping -W 1 -c 1 10.1.1.2
PING 10.1.1.2 (10.1.1.2) 56(84) bytes of data.
[ 64.168420] ==================================================================
[ 64.169977] BUG: KASAN: stack-out-of-bounds in __xfrm6_addr_hash+0x11e/0x170
[ 64.169977] Read of size 4 at addr ffff88800e1ffd20 by task ping/2844
[ 64.169977] CPU: 2 UID: 0 PID: 2844 Comm: ping Not tainted 7.1.0-rc7-00180-geb23b588430a #98 PREEMPT(full)
[ 64.169977] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[ 64.169977] Call Trace:
[ 64.169977] <TASK>
[ 64.169977] dump_stack_lvl+0x47/0x70
[ 64.169977] ? __xfrm6_addr_hash+0x11e/0x170
[ 64.169977] print_report+0x152/0x4b0
[ 64.169977] ? ksys_mmap_pgoff+0x6d/0xa0
[ 64.169977] ? entry_SYSCALL_64_after_hwframe+0x76/0x7e
[ 64.169977] ? rcu_read_unlock_sched+0xa/0x20
[ 64.169977] ? __virt_addr_valid+0x21b/0x230
[ 64.169977] ? __xfrm6_addr_hash+0x11e/0x170
[ 64.169977] kasan_report+0xa8/0xd0
[ 64.169977] ? __xfrm6_addr_hash+0x11e/0x170
[ 64.169977] __xfrm6_addr_hash+0x11e/0x170
[ 64.169977] __xfrm_dst_hash+0x24/0xc0
[ 64.169977] xfrm_state_find+0xa2d/0x2f90
[ 64.169977] ? __pfx_xfrm_state_find+0x10/0x10
[ 64.169977] ? __pfx_ftrace_graph_ret_addr+0x10/0x10
[ 64.169977] ? __pfx_ftrace_graph_ret_addr+0x10/0x10
[ 64.169977] xfrm_tmpl_resolve_one+0x210/0x570
[ 64.169977] ? __pfx_xfrm_tmpl_resolve_one+0x10/0x10
[ 64.169977] ? __pfx_stack_trace_consume_entry+0x10/0x10
[ 64.169977] ? kernel_text_address+0x5b/0x80
[ 64.169977] ? __kernel_text_address+0xe/0x30
[ 64.169977] ? unwind_get_return_address+0x5e/0x90
[ 64.169977] ? arch_stack_walk+0x8c/0xe0
[ 64.169977] xfrm_tmpl_resolve+0x130/0x200
[ 64.169977] ? __pfx_xfrm_tmpl_resolve+0x10/0x10
[ 64.169977] ? __pfx_xfrm_policy_inexact_lookup_rcu+0x10/0x10
[ 64.169977] ? __refcount_add_not_zero.constprop.0+0xb2/0x110
[ 64.169977] ? __pfx___refcount_add_not_zero.constprop.0+0x10/0x10
[ 64.169977] xfrm_resolve_and_create_bundle+0xd5/0x310
[ 64.169977] ? __pfx_xfrm_resolve_and_create_bundle+0x10/0x10
[ 64.169977] ? __pfx_xfrm_policy_lookup_bytype+0x10/0x10
[ 64.169977] ? __pfx_xfrm_policy_lookup_bytype+0x10/0x10
[ 64.169977] xfrm_lookup_with_ifid+0x3d8/0xb80
[ 64.169977] ? __pfx_xfrm_lookup_with_ifid+0x10/0x10
[ 64.169977] ? ip_route_output_key_hash+0xc6/0x110
[ 64.169977] ? kasan_save_track+0x10/0x30
[ 64.169977] xfrm_lookup_route+0x18/0xe0
[ 64.169977] ip4_datagram_release_cb+0x4c9/0x530
[ 64.169977] ? __pfx_ip4_datagram_release_cb+0x10/0x10
[ 64.169977] ? do_raw_spin_lock+0x71/0xc0
[ 64.169977] ? __pfx_do_raw_spin_lock+0x10/0x10
[ 64.169977] release_sock+0xb0/0x170
[ 64.169977] udp_connect+0x43/0x50
[ 64.169977] __sys_connect+0xa6/0x100
[ 64.169977] ? alloc_fd+0x2e9/0x300
[ 64.169977] ? __pfx___sys_connect+0x10/0x10
[ 64.169977] ? preempt_latency_start+0x1f/0x70
[ 64.169977] ? fd_install+0x7e/0x150
[ 64.169977] ? rcu_read_unlock_sched+0xa/0x20
[ 64.169977] ? __sys_socket+0xdf/0x130
[ 64.169977] ? __pfx___sys_socket+0x10/0x10
[ 64.169977] ? vma_refcount_put+0x43/0xa0
[ 64.169977] __x64_sys_connect+0x7e/0x90
[ 64.169977] do_syscall_64+0x11b/0x2b0
[ 64.169977] entry_SYSCALL_64_after_hwframe+0x76/0x7e
[ 64.169977] RIP: 0033:0x7f4851ecb570
[ 64.169977] Code: 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 80 3d f9 ca 0d 00 00 74 17 b8 2a 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 58 c3 0f 1f 80 00 00 00 00 48 83 ec 18 89 54
[ 64.169977] RSP: 002b:00007ffc830e3498 EFLAGS: 00000202 ORIG_RAX: 000000000000002a
[ 64.169977] RAX: ffffffffffffffda RBX: 00007ffc830e34d0 RCX: 00007f4851ecb570
[ 64.169977] RDX: 0000000000000010 RSI: 00007ffc830e34d0 RDI: 0000000000000005
[ 64.169977] RBP: 0000000000000000 R08: 0000000000000003 R09: 0000000000000000
[ 64.169977] R10: 0000000000000006 R11: 0000000000000202 R12: 0000000000000005
[ 64.169977] R13: 0000000000000000 R14: 00005619a863f340 R15: 0000000000000000
[ 64.169977] </TASK>
[ 64.169977] The buggy address belongs to stack of task ping/2844
[ 64.169977] and is located at offset 88 in frame:
[ 64.169977] ip4_datagram_release_cb+0x0/0x530
[ 64.169977] This frame has 1 object:
[ 64.169977] [32, 88) 'fl4'
[ 64.169977] The buggy address belongs to the physical page:
[ 64.169977] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe1ff
[ 64.169977] flags: 0x4000000000000000(zone=1)
[ 64.169977] raw: 4000000000000000 0000000000000000 ffffea0000387fc8 0000000000000000
[ 64.169977] raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
[ 64.169977] page dumped because: kasan: bad access detected
[ 64.169977] Memory state around the buggy address:
[ 64.169977] ffff88800e1ffc00: f2 f2 00 00 f3 f3 00 00 00 00 00 00 00 00 00 00
[ 64.169977] ffff88800e1ffc80: 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1 00 00 00
[ 64.169977] >ffff88800e1ffd00: 00 00 00 00 f3 f3 f3 f3 f3 00 00 00 00 00 00 00
[ 64.169977] ^
[ 64.169977] ffff88800e1ffd80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 f1 f1
[ 64.169977] ffff88800e1ffe00: f1 f1 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 64.169977] ==================================================================
[ 64.245153] Disabling lock debugging due to kernel taint
After the fix:
ip xfrm policy add src 10.1.1.1/32 dst 10.1.1.2/32 dir out tmpl \
src fc00::dead:1 dst fc00::dead:2 proto esp reqid 1 mode iptfs \
level use tmpl src fc00::dead:1 dst fc00::dead:2 proto esp reqid 2 \
mode transport
Error: Mode in optional template not allowed in outbound policy.
Fixes: d1716d5a44c3 ("xfrm: add generic iptfs defines and functionality")
Reported-by: syzbot+0ac4d84afe1066a1f3e9@syzkaller.appspotmail.com
Closes: https://lore.kernel.org/all/6a3ceb94.43b4ff68.30a095.0004.GAE@google.com/T/
Signed-off-by: Antony Antony <antony.antony@secunet.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/xfrm/xfrm_user.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c
index 9ad6619888c738..3641ccccbc4153 100644
--- a/net/xfrm/xfrm_user.c
+++ b/net/xfrm/xfrm_user.c
@@ -2068,13 +2068,12 @@ static int validate_tmpl(int nr, struct xfrm_user_tmpl *ut, u16 family,
switch (ut[i].mode) {
case XFRM_MODE_TUNNEL:
case XFRM_MODE_BEET:
+ case XFRM_MODE_IPTFS:
if (ut[i].optional && dir == XFRM_POLICY_OUT) {
NL_SET_ERR_MSG(extack, "Mode in optional template not allowed in outbound policy");
return -EINVAL;
}
break;
- case XFRM_MODE_IPTFS:
- break;
default:
if (ut[i].family != prev_family) {
NL_SET_ERR_MSG(extack, "Mode in template doesn't support a family change");
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 049/675] RDMA/cma: Fix hardware address comparison length in netevent callback
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (47 preceding siblings ...)
2026-07-30 14:06 ` [PATCH 6.18 048/675] xfrm: reject optional IPTFS templates in outbound policies Greg Kroah-Hartman
@ 2026-07-30 14:06 ` Greg Kroah-Hartman
2026-07-30 14:06 ` [PATCH 6.18 050/675] RDMA/umem: Add pinned revocable dmabuf import interface Greg Kroah-Hartman
` (630 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:06 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Or Gerlitz, Leon Romanovsky,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Or Gerlitz <ogerlitz@ddn.com>
[ Upstream commit 18313833e2c6de222a4f6c072da759d0d5888528 ]
The cited commit hardcoded the hardware address comparison len to ETH_ALEN.
This breaks IPoIB, which uses 20-byte addresses. By truncating the
memcmp, the CMA may incorrectly assume the target address is
unchanged and fails to abort the stalled connection.
Fix this by replacing ETH_ALEN with the dynamic neigh->dev->addr_len
to correctly evaluate the full address regardless of the link layer.
Fixes: 925d046e7e52 ("RDMA/core: Add a netevent notifier to cma")
Signed-off-by: Or Gerlitz <ogerlitz@ddn.com>
Link: https://patch.msgid.link/20260617-fix-cma-ipoib-v1-1-03f869344304@ddn.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/infiniband/core/cma.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c
index ce511800b056cf..648acc2222cf54 100644
--- a/drivers/infiniband/core/cma.c
+++ b/drivers/infiniband/core/cma.c
@@ -5237,7 +5237,7 @@ static int cma_netevent_callback(struct notifier_block *self,
list_for_each_entry(current_id, &ips_node->id_list, id_list_entry) {
if (!memcmp(current_id->id.route.addr.dev_addr.dst_dev_addr,
- neigh->ha, ETH_ALEN))
+ neigh->ha, neigh->dev->addr_len))
continue;
cma_id_get(current_id);
if (!queue_work(cma_wq, ¤t_id->id.net_work))
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 050/675] RDMA/umem: Add pinned revocable dmabuf import interface
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (48 preceding siblings ...)
2026-07-30 14:06 ` [PATCH 6.18 049/675] RDMA/cma: Fix hardware address comparison length in netevent callback Greg Kroah-Hartman
@ 2026-07-30 14:06 ` Greg Kroah-Hartman
2026-07-30 14:06 ` [PATCH 6.18 051/675] RDMA/irdma: Prevent rereg_mr for non-mem regions Greg Kroah-Hartman
` (629 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:06 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Jacob Moroni, Leon Romanovsky,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jacob Moroni <jmoroni@google.com>
[ Upstream commit ff85a2ebacbdaec9f28c4660c991295ace93cd1c ]
Added an interface for importing a pinned but revocable dmabuf.
This interface can be used by drivers that are capable of revocation
so that they can import dmabufs from exporters that may require it,
such as VFIO.
This interface implements a two step process, where drivers will first
call ib_umem_dmabuf_get_pinned_revocable_and_lock() which will pin and
map the dmabuf (and provide a functional move_notify/invalidate_mappings
callback), but will return with the lock still held so that the
driver can then populate the callback via
ib_umem_dmabuf_set_revoke_locked() without races from concurrent
revocations. This scheme also allows for easier integration with drivers
that may not have actually allocated their internal MR objects at the time
of the get_pinned_revocable* call.
Signed-off-by: Jacob Moroni <jmoroni@google.com>
Link: https://patch.msgid.link/20260305170826.3803155-4-jmoroni@google.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Stable-dep-of: a846aecb931b ("RDMA/irdma: Prevent rereg_mr for non-mem regions")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/infiniband/core/umem_dmabuf.c | 61 +++++++++++++++++++++++++++
include/rdma/ib_umem.h | 19 +++++++++
2 files changed, 80 insertions(+)
diff --git a/drivers/infiniband/core/umem_dmabuf.c b/drivers/infiniband/core/umem_dmabuf.c
index b239ac09ec2921..4fc73f53342b7e 100644
--- a/drivers/infiniband/core/umem_dmabuf.c
+++ b/drivers/infiniband/core/umem_dmabuf.c
@@ -206,6 +206,10 @@ static void ib_umem_dmabuf_revoke_locked(struct dma_buf_attachment *attach)
if (umem_dmabuf->revoked)
return;
+
+ if (umem_dmabuf->pinned_revoke)
+ umem_dmabuf->pinned_revoke(umem_dmabuf->private);
+
ib_umem_dmabuf_unmap_pages(umem_dmabuf);
if (umem_dmabuf->pinned) {
dma_buf_unpin(umem_dmabuf->attach);
@@ -214,6 +218,11 @@ static void ib_umem_dmabuf_revoke_locked(struct dma_buf_attachment *attach)
umem_dmabuf->revoked = 1;
}
+static struct dma_buf_attach_ops ib_umem_dmabuf_attach_pinned_revocable_ops = {
+ .allow_peer2peer = true,
+ .move_notify = ib_umem_dmabuf_revoke_locked,
+};
+
static struct ib_umem_dmabuf *
ib_umem_dmabuf_get_pinned_and_lock(struct ib_device *device,
struct device *dma_device,
@@ -266,6 +275,58 @@ ib_umem_dmabuf_get_pinned_with_dma_device(struct ib_device *device,
}
EXPORT_SYMBOL(ib_umem_dmabuf_get_pinned_with_dma_device);
+/**
+ * ib_umem_dmabuf_get_pinned_revocable_and_lock - Map & pin a revocable dmabuf
+ * @device: IB device.
+ * @offset: Start offset.
+ * @size: Length.
+ * @fd: dmabuf fd.
+ * @access: Access flags.
+ *
+ * Obtains a umem from a dmabuf for drivers/devices that can support revocation.
+ *
+ * Returns with dma_resv_lock held upon success. The driver must set the revoke
+ * callback prior to unlock by calling ib_umem_dmabuf_set_revoke_locked().
+ *
+ * When a revocation occurs, the revoke callback will be called. The driver must
+ * ensure that the region is no longer accessed when the callback returns. Any
+ * subsequent access attempts should also probably cause an AE for MRs.
+ *
+ * If the umem is used for an MR, the driver must ensure that the key remains in
+ * use such that it cannot be obtained by a new region until this region is
+ * fully deregistered (i.e., ibv_dereg_mr). If a driver needs to serialize with
+ * revoke calls, it can use dma_resv_lock.
+ *
+ * If successful, then the revoke callback may be called at any time and will
+ * also be called automatically upon ib_umem_release (serialized). The revoke
+ * callback will be called one time at most.
+ *
+ * Return: A pointer to ib_umem_dmabuf on success, or an ERR_PTR on failure.
+ */
+struct ib_umem_dmabuf *
+ib_umem_dmabuf_get_pinned_revocable_and_lock(struct ib_device *device,
+ unsigned long offset, size_t size,
+ int fd, int access)
+{
+ const struct dma_buf_attach_ops *ops =
+ &ib_umem_dmabuf_attach_pinned_revocable_ops;
+
+ return ib_umem_dmabuf_get_pinned_and_lock(device, device->dma_device,
+ offset, size, fd, access,
+ ops);
+}
+EXPORT_SYMBOL(ib_umem_dmabuf_get_pinned_revocable_and_lock);
+
+void ib_umem_dmabuf_set_revoke_locked(struct ib_umem_dmabuf *umem_dmabuf,
+ void (*revoke)(void *priv), void *priv)
+{
+ dma_resv_assert_held(umem_dmabuf->attach->dmabuf->resv);
+
+ umem_dmabuf->pinned_revoke = revoke;
+ umem_dmabuf->private = priv;
+}
+EXPORT_SYMBOL(ib_umem_dmabuf_set_revoke_locked);
+
struct ib_umem_dmabuf *ib_umem_dmabuf_get_pinned(struct ib_device *device,
unsigned long offset,
size_t size, int fd,
diff --git a/include/rdma/ib_umem.h b/include/rdma/ib_umem.h
index 5122f78467675e..90b1ea19a90a0a 100644
--- a/include/rdma/ib_umem.h
+++ b/include/rdma/ib_umem.h
@@ -36,6 +36,7 @@ struct ib_umem_dmabuf {
struct scatterlist *last_sg;
unsigned long first_sg_offset;
unsigned long last_sg_trim;
+ void (*pinned_revoke)(void *priv);
void *private;
u8 pinned : 1;
u8 revoked : 1;
@@ -141,6 +142,12 @@ struct ib_umem_dmabuf *ib_umem_dmabuf_get_pinned(struct ib_device *device,
size_t size, int fd,
int access);
struct ib_umem_dmabuf *
+ib_umem_dmabuf_get_pinned_revocable_and_lock(struct ib_device *device,
+ unsigned long offset, size_t size,
+ int fd, int access);
+void ib_umem_dmabuf_set_revoke_locked(struct ib_umem_dmabuf *umem_dmabuf,
+ void (*revoke)(void *priv), void *priv);
+struct ib_umem_dmabuf *
ib_umem_dmabuf_get_pinned_with_dma_device(struct ib_device *device,
struct device *dma_device,
unsigned long offset, size_t size,
@@ -201,6 +208,18 @@ ib_umem_dmabuf_get_pinned(struct ib_device *device, unsigned long offset,
return ERR_PTR(-EOPNOTSUPP);
}
+static inline struct ib_umem_dmabuf *
+ib_umem_dmabuf_get_pinned_revocable_and_lock(struct ib_device *device,
+ unsigned long offset, size_t size,
+ int fd, int access)
+{
+ return ERR_PTR(-EOPNOTSUPP);
+}
+
+static inline void
+ib_umem_dmabuf_set_revoke_locked(struct ib_umem_dmabuf *umem_dmabuf,
+ void (*revoke)(void *priv), void *priv) {}
+
static inline struct ib_umem_dmabuf *
ib_umem_dmabuf_get_pinned_with_dma_device(struct ib_device *device,
struct device *dma_device,
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 051/675] RDMA/irdma: Prevent rereg_mr for non-mem regions
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (49 preceding siblings ...)
2026-07-30 14:06 ` [PATCH 6.18 050/675] RDMA/umem: Add pinned revocable dmabuf import interface Greg Kroah-Hartman
@ 2026-07-30 14:06 ` Greg Kroah-Hartman
2026-07-30 14:06 ` [PATCH 6.18 052/675] RDMA/irdma: Remove redundant legacy_mode checks Greg Kroah-Hartman
` (628 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:06 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Jacob Moroni, David Hu,
Leon Romanovsky, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jacob Moroni <jmoroni@google.com>
[ Upstream commit a846aecb931b4d65d5eafa92a0623545af46d4f2 ]
When a QP/CQ/SRQ is created, a two step process is used
where the buffer is allocated in userspace and explicitly
registered with the normal reg_mr mechanism prior to creating
the actual QP/CQ/SRQ object.
These special registrations are indicated via an ABI field
so the driver knows that they do not have a valid mkey and
to skip the actual CQP command submission.
Since these are real MR objects from the core's perspective,
it is possible for a user application to invoke rereg_mr on them
and cause a real CQP op to be emitted with the zero-initialized
mkey value of 0.
Fix this by preventing rereg_mr on these special regions.
Fixes: 5ac388db27c4 ("RDMA/irdma: Add support to re-register a memory region")
Signed-off-by: Jacob Moroni <jmoroni@google.com>
Reviewed-by: David Hu <xuehaohu@google.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/infiniband/hw/irdma/verbs.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/infiniband/hw/irdma/verbs.c b/drivers/infiniband/hw/irdma/verbs.c
index 2b85e32134a5b8..c210f9a37fb97b 100644
--- a/drivers/infiniband/hw/irdma/verbs.c
+++ b/drivers/infiniband/hw/irdma/verbs.c
@@ -3756,6 +3756,9 @@ static struct ib_mr *irdma_rereg_user_mr(struct ib_mr *ib_mr, int flags,
if (flags & ~(IB_MR_REREG_TRANS | IB_MR_REREG_PD | IB_MR_REREG_ACCESS))
return ERR_PTR(-EOPNOTSUPP);
+ if (iwmr->type != IRDMA_MEMREG_TYPE_MEM)
+ return ERR_PTR(-EINVAL);
+
ret = ib_umem_check_rereg(iwmr->region, flags, new_access);
if (ret)
return ERR_PTR(ret);
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 052/675] RDMA/irdma: Remove redundant legacy_mode checks
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (50 preceding siblings ...)
2026-07-30 14:06 ` [PATCH 6.18 051/675] RDMA/irdma: Prevent rereg_mr for non-mem regions Greg Kroah-Hartman
@ 2026-07-30 14:06 ` Greg Kroah-Hartman
2026-07-30 14:06 ` [PATCH 6.18 053/675] RDMA/irdma: Prevent user-triggered null deref on QP create Greg Kroah-Hartman
` (627 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:06 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Jacob Moroni, Jason Gunthorpe,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jacob Moroni <jmoroni@google.com>
[ Upstream commit ed8621be482bf18dcd217aa024e95758bf9d28f2 ]
The driver has the following invariants:
1. legacy_mode is only allowed on GEN_1 hardware (enforced
in irdma_alloc_ucontext).
2. GEN_1 hardware does not set IRDMA_FEATURE_CQ_RESIZE or
IRDMA_FEATURE_RTS_AE. These feature flags are only set
for GEN_2 and GEN_3 hardware.
Therefore, legacy_mode is always false if IRDMA_FEATURE_CQ_RESIZE
or IRDMA_FEATURE_RTS_AE is set, so remove the redundant checks.
Link: https://patch.msgid.link/r/20260602214423.1315105-1-jmoroni@google.com
Signed-off-by: Jacob Moroni <jmoroni@google.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Stable-dep-of: b9b088907156 ("RDMA/irdma: Prevent user-triggered null deref on QP create")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/infiniband/hw/irdma/uk.c | 9 +++------
drivers/infiniband/hw/irdma/user.h | 1 -
drivers/infiniband/hw/irdma/verbs.c | 7 +------
3 files changed, 4 insertions(+), 13 deletions(-)
diff --git a/drivers/infiniband/hw/irdma/uk.c b/drivers/infiniband/hw/irdma/uk.c
index 4cc81d61be7fad..7aab0076196677 100644
--- a/drivers/infiniband/hw/irdma/uk.c
+++ b/drivers/infiniband/hw/irdma/uk.c
@@ -1540,15 +1540,12 @@ static const struct irdma_wqe_uk_ops iw_wqe_uk_ops_gen_1 = {
* irdma_setup_connection_wqes - setup WQEs necessary to complete
* connection.
* @qp: hw qp (user and kernel)
- * @info: qp initialization info
*/
-static void irdma_setup_connection_wqes(struct irdma_qp_uk *qp,
- struct irdma_qp_uk_init_info *info)
+static void irdma_setup_connection_wqes(struct irdma_qp_uk *qp)
{
u16 move_cnt = 1;
- if (!info->legacy_mode &&
- (qp->uk_attrs->feature_flags & IRDMA_FEATURE_RTS_AE))
+ if (qp->uk_attrs->feature_flags & IRDMA_FEATURE_RTS_AE)
move_cnt = 3;
qp->conn_wqes = move_cnt;
@@ -1699,7 +1696,7 @@ int irdma_uk_qp_init(struct irdma_qp_uk *qp, struct irdma_qp_uk_init_info *info)
sq_ring_size = qp->sq_size << info->sq_shift;
IRDMA_RING_INIT(qp->sq_ring, sq_ring_size);
if (info->first_sq_wq) {
- irdma_setup_connection_wqes(qp, info);
+ irdma_setup_connection_wqes(qp);
qp->swqe_polarity = 1;
qp->first_sq_wq = true;
} else {
diff --git a/drivers/infiniband/hw/irdma/user.h b/drivers/infiniband/hw/irdma/user.h
index aeebf768174abd..a0b409a895f0eb 100644
--- a/drivers/infiniband/hw/irdma/user.h
+++ b/drivers/infiniband/hw/irdma/user.h
@@ -560,7 +560,6 @@ struct irdma_qp_uk_init_info {
u8 sq_shift;
u8 rq_shift;
int abi_ver;
- bool legacy_mode;
struct irdma_srq_uk *srq_uk;
};
diff --git a/drivers/infiniband/hw/irdma/verbs.c b/drivers/infiniband/hw/irdma/verbs.c
index c210f9a37fb97b..dfd5f0caabb878 100644
--- a/drivers/infiniband/hw/irdma/verbs.c
+++ b/drivers/infiniband/hw/irdma/verbs.c
@@ -632,7 +632,6 @@ static int irdma_setup_umode_qp(struct ib_udata *udata,
iwqp->ctx_info.qp_compl_ctx = req.user_compl_ctx;
iwqp->user_mode = 1;
if (req.user_wqe_bufs) {
- info->qp_uk_init_info.legacy_mode = ucontext->legacy_mode;
spin_lock_irqsave(&ucontext->qp_reg_mem_list_lock, flags);
iwqp->iwpbl = irdma_get_pbl((unsigned long)req.user_wqe_bufs,
&ucontext->qp_reg_mem_list);
@@ -2068,10 +2067,6 @@ static int irdma_resize_cq(struct ib_cq *ibcq, int entries,
rdma_udata_to_drv_context(udata, struct irdma_ucontext,
ibucontext);
- /* CQ resize not supported with legacy GEN_1 libi40iw */
- if (ucontext->legacy_mode)
- return -EOPNOTSUPP;
-
if (ib_copy_from_udata(&req, udata,
min(sizeof(req), udata->inlen)))
return -EINVAL;
@@ -2550,7 +2545,7 @@ static int irdma_create_cq(struct ib_cq *ibcq,
cqmr = &iwpbl->cq_mr;
if (rf->sc_dev.hw_attrs.uk_attrs.feature_flags &
- IRDMA_FEATURE_CQ_RESIZE && !ucontext->legacy_mode) {
+ IRDMA_FEATURE_CQ_RESIZE) {
spin_lock_irqsave(&ucontext->cq_reg_mem_list_lock, flags);
iwpbl_shadow = irdma_get_pbl(
(unsigned long)req.user_shadow_area,
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 053/675] RDMA/irdma: Prevent user-triggered null deref on QP create
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (51 preceding siblings ...)
2026-07-30 14:06 ` [PATCH 6.18 052/675] RDMA/irdma: Remove redundant legacy_mode checks Greg Kroah-Hartman
@ 2026-07-30 14:06 ` Greg Kroah-Hartman
2026-07-30 14:06 ` [PATCH 6.18 054/675] RDMA/erdma: initialize ret for empty receive WR lists Greg Kroah-Hartman
` (626 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:06 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Jacob Moroni, David Hu,
Jason Gunthorpe, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jacob Moroni <jmoroni@google.com>
[ Upstream commit b9b0889071569d43623c260074e159cd8f26adb1 ]
Previously, the user QP creation path would only attempt to
populate iwqp->iwpbl if the user-provided req.user_wqe_bufs
field was non-zero. The problem is that iwqp->iwpbl is
unconditionally dereferenced later on in irdma_setup_virt_qp.
While there was a check for iwqp->iwpbl != NULL, this check
would only occur if req.user_wqe_bufs was non-zero. The end
result is that a user could send a zero user_wqe_bufs value
and trigger a null ptr deref.
Fix this by unconditionally calling irdma_get_pbl and bailing
if it fails, similar to the CQ and SRQ paths.
Fixes: b48c24c2d710 ("RDMA/irdma: Implement device supported verb APIs")
Link: https://patch.msgid.link/r/20260617164013.280790-1-jmoroni@google.com
Signed-off-by: Jacob Moroni <jmoroni@google.com>
Reviewed-by: David Hu <xuehaohu@google.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/infiniband/hw/irdma/verbs.c | 19 +++++++++----------
1 file changed, 9 insertions(+), 10 deletions(-)
diff --git a/drivers/infiniband/hw/irdma/verbs.c b/drivers/infiniband/hw/irdma/verbs.c
index dfd5f0caabb878..5f5b79109d5471 100644
--- a/drivers/infiniband/hw/irdma/verbs.c
+++ b/drivers/infiniband/hw/irdma/verbs.c
@@ -631,17 +631,16 @@ static int irdma_setup_umode_qp(struct ib_udata *udata,
iwqp->ctx_info.qp_compl_ctx = req.user_compl_ctx;
iwqp->user_mode = 1;
- if (req.user_wqe_bufs) {
- spin_lock_irqsave(&ucontext->qp_reg_mem_list_lock, flags);
- iwqp->iwpbl = irdma_get_pbl((unsigned long)req.user_wqe_bufs,
- &ucontext->qp_reg_mem_list);
- spin_unlock_irqrestore(&ucontext->qp_reg_mem_list_lock, flags);
- if (!iwqp->iwpbl) {
- ret = -ENODATA;
- ibdev_dbg(&iwdev->ibdev, "VERBS: no pbl info\n");
- return ret;
- }
+ spin_lock_irqsave(&ucontext->qp_reg_mem_list_lock, flags);
+ iwqp->iwpbl = irdma_get_pbl((unsigned long)req.user_wqe_bufs,
+ &ucontext->qp_reg_mem_list);
+ spin_unlock_irqrestore(&ucontext->qp_reg_mem_list_lock, flags);
+
+ if (!iwqp->iwpbl) {
+ ret = -ENODATA;
+ ibdev_dbg(&iwdev->ibdev, "VERBS: no pbl info\n");
+ return ret;
}
if (!ucontext->use_raw_attrs) {
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 054/675] RDMA/erdma: initialize ret for empty receive WR lists
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (52 preceding siblings ...)
2026-07-30 14:06 ` [PATCH 6.18 053/675] RDMA/irdma: Prevent user-triggered null deref on QP create Greg Kroah-Hartman
@ 2026-07-30 14:06 ` Greg Kroah-Hartman
2026-07-30 14:06 ` [PATCH 6.18 055/675] RDMA/mana_ib: initialize err for empty send " Greg Kroah-Hartman
` (625 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:06 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Ruoyu Wang, Cheng Xu,
Jason Gunthorpe, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Ruoyu Wang <ruoyuw560@gmail.com>
[ Upstream commit 2815a277c53e9a84784d6410cd55a9da5b33068d ]
erdma_post_recv() returns ret after walking the receive work request list.
If the caller passes an empty list, the loop is skipped and ret is not
assigned.
Initialize ret to 0 so an empty receive work request list returns success
instead of stack data.
Fixes: 155055771704 ("RDMA/erdma: Add verbs implementation")
Link: https://patch.msgid.link/r/20260618041752.481193-1-ruoyuw560@gmail.com
Signed-off-by: Ruoyu Wang <ruoyuw560@gmail.com>
Reviewed-by: Cheng Xu <chengyou@linux.alibaba.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/infiniband/hw/erdma/erdma_qp.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/infiniband/hw/erdma/erdma_qp.c b/drivers/infiniband/hw/erdma/erdma_qp.c
index 25f6c49aec7798..e002343832f74d 100644
--- a/drivers/infiniband/hw/erdma/erdma_qp.c
+++ b/drivers/infiniband/hw/erdma/erdma_qp.c
@@ -734,7 +734,7 @@ int erdma_post_recv(struct ib_qp *ibqp, const struct ib_recv_wr *recv_wr,
const struct ib_recv_wr *wr = recv_wr;
struct erdma_qp *qp = to_eqp(ibqp);
unsigned long flags;
- int ret;
+ int ret = 0;
spin_lock_irqsave(&qp->lock, flags);
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 055/675] RDMA/mana_ib: initialize err for empty send WR lists
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (53 preceding siblings ...)
2026-07-30 14:06 ` [PATCH 6.18 054/675] RDMA/erdma: initialize ret for empty receive WR lists Greg Kroah-Hartman
@ 2026-07-30 14:06 ` Greg Kroah-Hartman
2026-07-30 14:06 ` [PATCH 6.18 056/675] RDMA/hns: Fix potential integer overflow in mhop hem cleanup Greg Kroah-Hartman
` (624 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:06 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Ruoyu Wang, Long Li, Jason Gunthorpe,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Ruoyu Wang <ruoyuw560@gmail.com>
[ Upstream commit 155fd5ce2382b0ffbec0d7ee7b3a6818a27a5aed ]
mana_ib_post_send() returns err after walking the send work request list.
If the caller passes an empty list, the loop is skipped and err is not
assigned.
Initialize err to 0 so an empty send work request list returns success
instead of stack data.
Fixes: c8017f5b4856 ("RDMA/mana_ib: UD/GSI work requests")
Link: https://patch.msgid.link/r/20260618041752.481193-2-ruoyuw560@gmail.com
Signed-off-by: Ruoyu Wang <ruoyuw560@gmail.com>
Reviewed-by: Long Li <longli@microsoft.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/infiniband/hw/mana/wr.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/infiniband/hw/mana/wr.c b/drivers/infiniband/hw/mana/wr.c
index 1813567d3b16c9..36a1d506f08f65 100644
--- a/drivers/infiniband/hw/mana/wr.c
+++ b/drivers/infiniband/hw/mana/wr.c
@@ -144,7 +144,7 @@ static int mana_ib_post_send_ud(struct mana_ib_qp *qp, const struct ib_ud_wr *wr
int mana_ib_post_send(struct ib_qp *ibqp, const struct ib_send_wr *wr,
const struct ib_send_wr **bad_wr)
{
- int err;
+ int err = 0;
struct mana_ib_qp *qp = container_of(ibqp, struct mana_ib_qp, ibqp);
for (; wr; wr = wr->next) {
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 056/675] RDMA/hns: Fix potential integer overflow in mhop hem cleanup
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (54 preceding siblings ...)
2026-07-30 14:06 ` [PATCH 6.18 055/675] RDMA/mana_ib: initialize err for empty send " Greg Kroah-Hartman
@ 2026-07-30 14:06 ` Greg Kroah-Hartman
2026-07-30 14:06 ` [PATCH 6.18 057/675] RDMA/siw: publish QP after initialization Greg Kroah-Hartman
` (623 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:06 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Danila Chernetsov, Junxian Huang,
Jason Gunthorpe, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Danila Chernetsov <listdansp@mail.ru>
[ Upstream commit 9f0f2d2121f16d420199a82ac5bbc242269133b3 ]
In hns_roce_cleanup_mhop_hem_table(), the expression:
obj = i * buf_chunk_size / table->obj_size;
is evaluated using 32-bit unsigned arithmetic because
'buf_chunk_size' is u32 and the usual arithmetic conversions convert
'i' to unsigned int. The result is assigned to a u64 variable, but the
multiplication may overflow before the assignment.
For sufficiently large HEM tables, this produces an incorrect object
index passed to hns_roce_table_mhop_put().
Cast 'i' to u64 before the multiplication so that the intermediate
calculation is performed with 64-bit arithmetic.
Found by Linux Verification Center (linuxtesting.org) with SVACE.
Fixes: a25d13cbe816 ("RDMA/hns: Add the interfaces to support multi hop addressing for the contexts in hip08")
Link: https://patch.msgid.link/r/20260627095951.51378-1-listdansp@mail.ru
Signed-off-by: Danila Chernetsov <listdansp@mail.ru>
Reviewed-by: Junxian Huang <huangjunxian6@hisilicon.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/infiniband/hw/hns/hns_roce_hem.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/infiniband/hw/hns/hns_roce_hem.c b/drivers/infiniband/hw/hns/hns_roce_hem.c
index 1680d0ac071ed1..ae7a3939124f23 100644
--- a/drivers/infiniband/hw/hns/hns_roce_hem.c
+++ b/drivers/infiniband/hw/hns/hns_roce_hem.c
@@ -842,7 +842,7 @@ static void hns_roce_cleanup_mhop_hem_table(struct hns_roce_dev *hr_dev,
mhop.bt_chunk_size;
for (i = 0; i < table->num_hem; ++i) {
- obj = i * buf_chunk_size / table->obj_size;
+ obj = (u64)i * buf_chunk_size / table->obj_size;
if (table->hem[i])
hns_roce_table_mhop_put(hr_dev, table, obj, 0);
}
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 057/675] RDMA/siw: publish QP after initialization
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (55 preceding siblings ...)
2026-07-30 14:06 ` [PATCH 6.18 056/675] RDMA/hns: Fix potential integer overflow in mhop hem cleanup Greg Kroah-Hartman
@ 2026-07-30 14:06 ` Greg Kroah-Hartman
2026-07-30 14:06 ` [PATCH 6.18 058/675] mtd: fix double free and WARN_ON in add_mtd_device() error paths Greg Kroah-Hartman
` (622 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:06 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Bernard Metzler, Ruoyu Wang,
Jason Gunthorpe, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Ruoyu Wang <ruoyuw560@gmail.com>
[ Upstream commit bb27fcc67c429d97f785c92c35a6c5adebb05d7f ]
siw_create_qp() currently calls siw_qp_add() before the queues, CQ
pointers, state, completion, and device list entry are ready. A QPN
lookup can therefore reach a QP that is still being constructed.
Move siw_qp_add() to the end of siw_create_qp(), after QP
initialization and before adding the QP to the siw device list.
Fixes: f29dd55b0236 ("rdma/siw: queue pair methods")
Link: https://patch.msgid.link/r/20260630060040.966461-1-ruoyuw560@gmail.com
Suggested-by: Bernard Metzler <bernard.metzler@linux.dev>
Signed-off-by: Ruoyu Wang <ruoyuw560@gmail.com>
Acked-by: Bernard Metzler <bernard.metzler@linux.dev>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/infiniband/sw/siw/siw_verbs.c | 44 +++++++++++++++------------
1 file changed, 24 insertions(+), 20 deletions(-)
diff --git a/drivers/infiniband/sw/siw/siw_verbs.c b/drivers/infiniband/sw/siw/siw_verbs.c
index efa2f097b58289..9fbade0b85715a 100644
--- a/drivers/infiniband/sw/siw/siw_verbs.c
+++ b/drivers/infiniband/sw/siw/siw_verbs.c
@@ -316,6 +316,7 @@ int siw_create_qp(struct ib_qp *ibqp, struct ib_qp_init_attr *attrs,
struct siw_ucontext *uctx =
rdma_udata_to_drv_context(udata, struct siw_ucontext,
base_ucontext);
+ struct siw_uresp_create_qp uresp = {};
unsigned long flags;
int num_sqe, num_rqe, rv = 0;
size_t length;
@@ -369,11 +370,6 @@ int siw_create_qp(struct ib_qp *ibqp, struct ib_qp_init_attr *attrs,
spin_lock_init(&qp->rq_lock);
spin_lock_init(&qp->orq_lock);
- rv = siw_qp_add(sdev, qp);
- if (rv)
- goto err_atomic;
-
-
/* All queue indices are derived from modulo operations
* on a free running 'get' (consumer) and 'put' (producer)
* unsigned counter. Having queue sizes at power of two
@@ -391,14 +387,14 @@ int siw_create_qp(struct ib_qp *ibqp, struct ib_qp_init_attr *attrs,
if (qp->sendq == NULL) {
rv = -ENOMEM;
- goto err_out_xa;
+ goto err_out;
}
if (attrs->sq_sig_type != IB_SIGNAL_REQ_WR) {
if (attrs->sq_sig_type == IB_SIGNAL_ALL_WR)
qp->attrs.flags |= SIW_SIGNAL_ALL_WR;
else {
rv = -EINVAL;
- goto err_out_xa;
+ goto err_out;
}
}
qp->pd = pd;
@@ -424,7 +420,7 @@ int siw_create_qp(struct ib_qp *ibqp, struct ib_qp_init_attr *attrs,
if (qp->recvq == NULL) {
rv = -ENOMEM;
- goto err_out_xa;
+ goto err_out;
}
qp->attrs.rq_size = num_rqe;
}
@@ -439,11 +435,8 @@ int siw_create_qp(struct ib_qp *ibqp, struct ib_qp_init_attr *attrs,
qp->attrs.state = SIW_QP_STATE_IDLE;
if (udata) {
- struct siw_uresp_create_qp uresp = {};
-
uresp.num_sqe = num_sqe;
uresp.num_rqe = num_rqe;
- uresp.qp_id = qp_id(qp);
if (qp->sendq) {
length = num_sqe * sizeof(struct siw_sqe);
@@ -452,7 +445,7 @@ int siw_create_qp(struct ib_qp *ibqp, struct ib_qp_init_attr *attrs,
length, &uresp.sq_key);
if (!qp->sq_entry) {
rv = -ENOMEM;
- goto err_out_xa;
+ goto err_out;
}
}
@@ -464,9 +457,23 @@ int siw_create_qp(struct ib_qp *ibqp, struct ib_qp_init_attr *attrs,
if (!qp->rq_entry) {
uresp.sq_key = SIW_INVAL_UOBJ_KEY;
rv = -ENOMEM;
- goto err_out_xa;
+ goto err_out;
}
}
+ }
+ qp->tx_cpu = siw_get_tx_cpu(sdev);
+ if (qp->tx_cpu < 0) {
+ rv = -EINVAL;
+ goto err_out;
+ }
+ init_completion(&qp->qp_free);
+
+ rv = siw_qp_add(sdev, qp);
+ if (rv)
+ goto err_out_tx;
+
+ if (udata) {
+ uresp.qp_id = qp_id(qp);
if (udata->outlen < sizeof(uresp)) {
rv = -EINVAL;
@@ -476,22 +483,19 @@ int siw_create_qp(struct ib_qp *ibqp, struct ib_qp_init_attr *attrs,
if (rv)
goto err_out_xa;
}
- qp->tx_cpu = siw_get_tx_cpu(sdev);
- if (qp->tx_cpu < 0) {
- rv = -EINVAL;
- goto err_out_xa;
- }
+
INIT_LIST_HEAD(&qp->devq);
spin_lock_irqsave(&sdev->lock, flags);
list_add_tail(&qp->devq, &sdev->qp_list);
spin_unlock_irqrestore(&sdev->lock, flags);
- init_completion(&qp->qp_free);
-
return 0;
err_out_xa:
xa_erase(&sdev->qp_xa, qp_id(qp));
+err_out_tx:
+ siw_put_tx_cpu(qp->tx_cpu);
+err_out:
if (uctx) {
rdma_user_mmap_entry_remove(qp->sq_entry);
rdma_user_mmap_entry_remove(qp->rq_entry);
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 058/675] mtd: fix double free and WARN_ON in add_mtd_device() error paths
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (56 preceding siblings ...)
2026-07-30 14:06 ` [PATCH 6.18 057/675] RDMA/siw: publish QP after initialization Greg Kroah-Hartman
@ 2026-07-30 14:06 ` Greg Kroah-Hartman
2026-07-30 14:06 ` [PATCH 6.18 059/675] selftests/alsa: Fix memory leak in find_controls error path Greg Kroah-Hartman
` (621 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:06 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, syzbot+e9c76b56dc05023b8117, Xue Lei,
Miquel Raynal, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Xue Lei <Xue.Lei@windriver.com>
[ Upstream commit 9d4af746af8ce27eefc2338b2feaa1e01f28b6c3 ]
When device_register() or mtd_nvmem_add() fails inside
add_mtd_device() for a partition, the error handling triggers
mtd_release() via put_device() or device_unregister(). mtd_release()
calls release_mtd_partition() which frees the mtd_info structure.
However, callers such as mtd_add_partition() and add_mtd_partitions()
also call free_partition() in their error paths, resulting in a double
free.
Additionally, release_mtd_partition() hits WARN_ON(!list_empty(
&mtd->part.node)) because the partition node is still linked in the
parent's partitions list when the release callback fires from the
add_mtd_device() error path.
Fix this by overriding dev->type and dev->release before put_device()
in the error paths, so that device_release() invokes a no-op function
instead of mtd_release(). For the mtd_nvmem_add() failure case,
device_unregister() is replaced with device_del() to separate the
device removal from the final kobject reference drop, allowing the
override to take effect before put_device() is called.
The callers' error paths (list_del + free_partition) remain the sole
owners of mtd_info lifetime on add_mtd_device() failure, which is the
expected contract.
The normal partition teardown path is not affected: del_mtd_device()
goes through kref_put() -> mtd_device_release() -> device_unregister()
with dev->type still set to &mtd_devtype, so mtd_release() ->
release_mtd_partition() continues to work correctly for the regular
removal case.
Reported-by: syzbot+e9c76b56dc05023b8117@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=e9c76b56dc05023b8117
Fixes: 19bfa9ebebb5 ("mtd: use refcount to prevent corruption")
Signed-off-by: Xue Lei <Xue.Lei@windriver.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/mtd/mtdcore.c | 23 +++++++++++++++++++----
1 file changed, 19 insertions(+), 4 deletions(-)
diff --git a/drivers/mtd/mtdcore.c b/drivers/mtd/mtdcore.c
index 64808493b4f5ea..42cabd3c1efad1 100644
--- a/drivers/mtd/mtdcore.c
+++ b/drivers/mtd/mtdcore.c
@@ -104,6 +104,15 @@ static void mtd_release(struct device *dev)
device_destroy(&mtd_class, index + 1);
}
+/*
+ * No-op device release used in add_mtd_device() error paths.
+ * Prevents mtd_release() from being called via device_release(),
+ * which would free the mtd_info that the caller still manages.
+ */
+static void mtd_dev_release_nop(struct device *dev)
+{
+}
+
static void mtd_device_release(struct kref *kref)
{
struct mtd_info *mtd = container_of(kref, struct mtd_info, refcnt);
@@ -798,10 +807,8 @@ int add_mtd_device(struct mtd_info *mtd)
mtd_check_of_node(mtd);
of_node_get(mtd_get_of_node(mtd));
error = device_register(&mtd->dev);
- if (error) {
- put_device(&mtd->dev);
+ if (error)
goto fail_added;
- }
/* Add the nvmem provider */
error = mtd_nvmem_add(mtd);
@@ -839,8 +846,16 @@ int add_mtd_device(struct mtd_info *mtd)
return 0;
fail_nvmem_add:
- device_unregister(&mtd->dev);
+ device_del(&mtd->dev);
fail_added:
+ /*
+ * Clear type and set nop release to prevent mtd_release() ->
+ * release_mtd_partition() -> free_partition() from freeing mtd.
+ * The caller handles cleanup on failure.
+ */
+ mtd->dev.type = NULL;
+ mtd->dev.release = mtd_dev_release_nop;
+ put_device(&mtd->dev);
of_node_put(mtd_get_of_node(mtd));
fail_devname:
idr_remove(&mtd_idr, i);
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 059/675] selftests/alsa: Fix memory leak in find_controls error path
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (57 preceding siblings ...)
2026-07-30 14:06 ` [PATCH 6.18 058/675] mtd: fix double free and WARN_ON in add_mtd_device() error paths Greg Kroah-Hartman
@ 2026-07-30 14:06 ` Greg Kroah-Hartman
2026-07-30 14:06 ` [PATCH 6.18 060/675] RDMA/irdma: Prevent overflows in memory contiguity checks Greg Kroah-Hartman
` (620 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:06 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Malaya Kumar Rout, Takashi Iwai,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Malaya Kumar Rout <malayarout91@gmail.com>
[ Upstream commit cb89f0c1aed02eb233c4271f76f830b37e222ff6 ]
In find_controls(), card_data is allocated with malloc() but when
snd_ctl_open_lconf() fails, the code jumps to next_card without
freeing the allocated memory. This results in a memory leak for
each card where snd_ctl_open_lconf() fails.
Add free(card_data) before goto next_card to ensure proper cleanup
of the allocated memory in the error path.
Fixes: 5aaf9efffc57 ("kselftest: alsa: Add simplistic test for ALSA mixer controls kselftest")
Signed-off-by: Malaya Kumar Rout <malayarout91@gmail.com>
Link: https://patch.msgid.link/20260704105736.94874-1-malayarout91@gmail.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
tools/testing/selftests/alsa/mixer-test.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/tools/testing/selftests/alsa/mixer-test.c b/tools/testing/selftests/alsa/mixer-test.c
index e113dafa5c2464..cfb7968fbac075 100644
--- a/tools/testing/selftests/alsa/mixer-test.c
+++ b/tools/testing/selftests/alsa/mixer-test.c
@@ -84,6 +84,7 @@ static void find_controls(void)
if (err < 0) {
ksft_print_msg("Failed to get hctl for card %d: %s\n",
card, snd_strerror(err));
+ free(card_data);
goto next_card;
}
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 060/675] RDMA/irdma: Prevent overflows in memory contiguity checks
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (58 preceding siblings ...)
2026-07-30 14:06 ` [PATCH 6.18 059/675] selftests/alsa: Fix memory leak in find_controls error path Greg Kroah-Hartman
@ 2026-07-30 14:06 ` Greg Kroah-Hartman
2026-07-30 14:06 ` [PATCH 6.18 061/675] xfrm: clear mode callbacks after failed mode setup Greg Kroah-Hartman
` (619 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:06 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Aleksandrova Alyona, Leon Romanovsky,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Aleksandrova Alyona <aga@itb.spb.ru>
[ Upstream commit 3cda0dfe8c651dcbb9e38977905d3d3b1750c4ab ]
irdma_check_mem_contiguous() and irdma_check_mr_contiguous() verify that
PBL entries describe physically contiguous memory ranges.
Both functions calculate byte offsets using 32-bit operands. For example,
with 4 KiB pages, pg_size * pg_idx overflows 32-bit arithmetic when
pg_idx reaches 1048576. In the level-2 check, PBLE_PER_PAGE is 512, so
i * pg_size * PBLE_PER_PAGE overflows when i reaches 2048.
These values are reachable in the driver. For MRs, palloc->total_cnt
comes from iwmr->page_cnt, which is calculated by
ib_umem_num_dma_blocks(). The MR size is limited by IRDMA_MAX_MR_SIZE,
so a 4 GiB MR with 4 KiB pages can reach page_cnt of 1048576. PBLE
resources do not exclude this value either: for gen3, the limit is based
on avail_sds * MAX_PBLE_PER_SD, and MAX_PBLE_PER_SD is 0x40000, so 4 SDs
are enough for 1048576 PBLEs.
Cast one operand to u64 before the multiplications so that the offset
calculations are performed in 64-bit arithmetic.
Found by Linux Verification Center (linuxtesting.org) with SVACE.
Fixes: b48c24c2d710 ("RDMA/irdma: Implement device supported verb APIs")
Signed-off-by: Aleksandrova Alyona <aga@itb.spb.ru>
Link: https://patch.msgid.link/20260624144846.61242-1-aga@itb.spb.ru
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/infiniband/hw/irdma/verbs.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/infiniband/hw/irdma/verbs.c b/drivers/infiniband/hw/irdma/verbs.c
index 5f5b79109d5471..4084168d0194fb 100644
--- a/drivers/infiniband/hw/irdma/verbs.c
+++ b/drivers/infiniband/hw/irdma/verbs.c
@@ -2800,7 +2800,7 @@ static bool irdma_check_mem_contiguous(u64 *arr, u32 npages, u32 pg_size)
u32 pg_idx;
for (pg_idx = 0; pg_idx < npages; pg_idx++) {
- if ((*arr + (pg_size * pg_idx)) != arr[pg_idx])
+ if ((*arr + ((u64)pg_size * pg_idx)) != arr[pg_idx])
return false;
}
@@ -2833,7 +2833,7 @@ static bool irdma_check_mr_contiguous(struct irdma_pble_alloc *palloc,
for (i = 0; i < lvl2->leaf_cnt; i++, leaf++) {
arr = leaf->addr;
- if ((*start_addr + (i * pg_size * PBLE_PER_PAGE)) != *arr)
+ if ((*start_addr + ((u64)i * pg_size * PBLE_PER_PAGE)) != *arr)
return false;
ret = irdma_check_mem_contiguous(arr, leaf->cnt, pg_size);
if (!ret)
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 061/675] xfrm: clear mode callbacks after failed mode setup
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (59 preceding siblings ...)
2026-07-30 14:06 ` [PATCH 6.18 060/675] RDMA/irdma: Prevent overflows in memory contiguity checks Greg Kroah-Hartman
@ 2026-07-30 14:06 ` Greg Kroah-Hartman
2026-07-30 14:06 ` [PATCH 6.18 062/675] xfrm: iptfs: propagate SKBFL_SHARED_FRAG in iptfs_skb_add_frags() Greg Kroah-Hartman
` (618 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:06 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Cen Zhang, Steffen Klassert,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Cen Zhang <zzzccc427@gmail.com>
[ Upstream commit 2538bd3cd1ff5af655908469544ac7b7ae259386 ]
xfrm_state_gc_task can run long after a failed IPTFS state setup. In the
reproduced case, __xfrm_init_state() cached x->mode_cbs, IPTFS setup
returned -ENOMEM before publishing mode_data, and the temporary module
reference from xfrm_get_mode_cbs() was dropped immediately. The dead state
then kept x->mode_cbs until deferred GC ran after xfrm_iptfs had been
unloaded.
Clear x->mode_cbs when mode init or clone fails before publishing
mode_data. Those states never installed mode-specific state or the
long-term IPTFS module pin, so deferred GC has nothing mode-specific to
destroy and must not retain a callback table pointer past the temporary
lookup reference.
The buggy scenario involves two paths, with each column showing the order
within that path:
failed setup path:
1. cache x->mode_cbs
2. mode setup fails before mode_data
3. drop the temporary module ref
4. dead state keeps x->mode_cbs cached
GC/unload path:
1. xfrm_state_put() queues GC work
2. xfrm_iptfs unloads later
3. xfrm_state_gc_task runs
4. GC dereferences stale x->mode_cbs
This also covers the failed clone path where clone_state() returns before
publishing mode_data.
Validation reproduced this kernel report:
Kernel panic - not syncing: Fatal exception
CONFIG_FAULT_INJECTION_STACKTRACE_FILTER=y
failslab_stacktrace_filter matched xfrm_iptfs frames
ack_error=-12
FAULT_INJECTION: forcing a failure
BUG: unable to handle page fault
Workqueue: events xfrm_state_gc_task
RIP: xfrm_state_gc_task+0x142/0x650
Modules linked in: esp4_offload xfrm_user [last unloaded: xfrm_iptfs]
Kernel panic - not syncing: Fatal exception
Fixes: 4b3faf610cc6 ("xfrm: iptfs: add new iptfs xfrm mode impl")
Assisted-by: Codex:gpt-5.5
Signed-off-by: Cen Zhang <zzzccc427@gmail.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/xfrm/xfrm_state.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/net/xfrm/xfrm_state.c b/net/xfrm/xfrm_state.c
index 89daad5db10c9d..b9049c2297bd5a 100644
--- a/net/xfrm/xfrm_state.c
+++ b/net/xfrm/xfrm_state.c
@@ -2070,8 +2070,11 @@ static struct xfrm_state *xfrm_state_clone_and_setup(struct xfrm_state *orig,
x->mode_cbs = orig->mode_cbs;
if (x->mode_cbs && x->mode_cbs->clone_state) {
- if (x->mode_cbs->clone_state(x, orig))
+ if (x->mode_cbs->clone_state(x, orig)) {
+ if (!x->mode_data)
+ x->mode_cbs = NULL;
goto error;
+ }
}
@@ -3253,6 +3256,8 @@ int __xfrm_init_state(struct xfrm_state *x, struct netlink_ext_ack *extack)
if (x->mode_cbs->init_state)
err = x->mode_cbs->init_state(x);
module_put(x->mode_cbs->owner);
+ if (err && !x->mode_data)
+ x->mode_cbs = NULL;
}
error:
return err;
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 062/675] xfrm: iptfs: propagate SKBFL_SHARED_FRAG in iptfs_skb_add_frags()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (60 preceding siblings ...)
2026-07-30 14:06 ` [PATCH 6.18 061/675] xfrm: clear mode callbacks after failed mode setup Greg Kroah-Hartman
@ 2026-07-30 14:06 ` Greg Kroah-Hartman
2026-07-30 14:06 ` [PATCH 6.18 063/675] xfrm6: clear dst.dev on error to avoid double netdev_put in xfrm6_fill_dst() Greg Kroah-Hartman
` (617 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:06 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Chen YanJun, Steffen Klassert,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Chen YanJun <moomichen@tencent.com>
[ Upstream commit 430ea57d6daf765e88f90046afbfd1e071cb7200 ]
When iptfs_skb_add_frags() copies frag references from the source
frag walk into a new SKB, it increments the page reference count via
__skb_frag_ref() but does not propagate SKBFL_SHARED_FRAG to the
destination SKB's skb_shinfo->flags.
If the source SKB carries shared frags (e.g. from a page-pool backed
receive path), the new inner SKB will appear to ESP as having privately
owned frags. A subsequent esp_input() call for a nested transport-mode
SA then takes the no-COW fast path and decrypts in place, writing over
pages that are still referenced by the outer IPTFS SKB. This causes
kernel-visible memory corruption and can trigger a panic.
All other frag-transfer helpers in the kernel (skb_try_coalesce,
skb_gro_receive, __pskb_copy_fclone, skb_shift, skb_segment) correctly
propagate SKBFL_SHARED_FRAG; align iptfs_skb_add_frags() with this
convention by setting the flag inside the loop immediately after
__skb_frag_ref() and nr_frags++, so every exit path that attaches a frag
unconditionally propagates SKBFL_SHARED_FRAG.
Fixes: 5f2b6a909574 ("xfrm: iptfs: add skb-fragment sharing code")
Signed-off-by: Chen YanJun <moomichen@tencent.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/xfrm/xfrm_iptfs.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/net/xfrm/xfrm_iptfs.c b/net/xfrm/xfrm_iptfs.c
index fe8e4f21b32819..d39253b06c4efd 100644
--- a/net/xfrm/xfrm_iptfs.c
+++ b/net/xfrm/xfrm_iptfs.c
@@ -480,6 +480,7 @@ static int iptfs_skb_add_frags(struct sk_buff *skb,
}
__skb_frag_ref(tofrag);
shinfo->nr_frags++;
+ shinfo->flags |= SKBFL_SHARED_FRAG;
/* see if we are done */
fraglen = tofrag->len;
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 063/675] xfrm6: clear dst.dev on error to avoid double netdev_put in xfrm6_fill_dst()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (61 preceding siblings ...)
2026-07-30 14:06 ` [PATCH 6.18 062/675] xfrm: iptfs: propagate SKBFL_SHARED_FRAG in iptfs_skb_add_frags() Greg Kroah-Hartman
@ 2026-07-30 14:06 ` Greg Kroah-Hartman
2026-07-30 14:06 ` [PATCH 6.18 064/675] xfrm: policy: preallocate inexact bins before xfrm_hash_rebuild reinsert Greg Kroah-Hartman
` (616 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:06 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, AutonomousCodeSecurity,
Xiang Mei (Microsoft), Steffen Klassert, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Xiang Mei (Microsoft) <xmei5@asu.edu>
[ Upstream commit 136992de9bb91871084ae52d172610541c76e4d2 ]
On the error path where in6_dev_get(dev) returns NULL, xfrm6_fill_dst()
releases the device reference with netdev_put() but leaves
xdst->u.dst.dev set. dst_destroy() later calls netdev_put(dst->dev)
again, so the same net_device reference is released twice, underflowing
its refcount (ref_tracker WARNING + "unregister_netdevice: waiting for
<dev> to become free").
Clear xdst->u.dst.dev after the netdev_put(), the same way the XFRM
device-offload paths xfrm_dev_state_add() and xfrm_dev_policy_add() in
net/xfrm/xfrm_device.c NULL ->dev when releasing the reference on error.
ref_tracker: reference already released.
ref_tracker: allocated in:
xfrm6_fill_dst (net/ipv6/xfrm6_policy.c:86)
...
udpv6_sendmsg (net/ipv6/udp.c:1696)
...
ref_tracker: freed in:
xfrm6_fill_dst (net/ipv6/xfrm6_policy.c:90)
...
WARNING: lib/ref_tracker.c:322 at ref_tracker_free+0x58b/0x780
dst_destroy (net/core/dst.c:115)
rcu_core
handle_softirqs
...
Fixes: 84c4a9dfbf43 ("xfrm6: release dev before returning error")
Reported-by: AutonomousCodeSecurity@microsoft.com
Signed-off-by: Xiang Mei (Microsoft) <xmei5@asu.edu>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/ipv6/xfrm6_policy.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/net/ipv6/xfrm6_policy.c b/net/ipv6/xfrm6_policy.c
index 125ea9a5b8a082..3b749475f6ed65 100644
--- a/net/ipv6/xfrm6_policy.c
+++ b/net/ipv6/xfrm6_policy.c
@@ -88,6 +88,7 @@ static int xfrm6_fill_dst(struct xfrm_dst *xdst, struct net_device *dev,
xdst->u.rt6.rt6i_idev = in6_dev_get(dev);
if (!xdst->u.rt6.rt6i_idev) {
netdev_put(dev, &xdst->u.dst.dev_tracker);
+ xdst->u.dst.dev = NULL;
return -ENODEV;
}
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 064/675] xfrm: policy: preallocate inexact bins before xfrm_hash_rebuild reinsert
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (62 preceding siblings ...)
2026-07-30 14:06 ` [PATCH 6.18 063/675] xfrm6: clear dst.dev on error to avoid double netdev_put in xfrm6_fill_dst() Greg Kroah-Hartman
@ 2026-07-30 14:06 ` Greg Kroah-Hartman
2026-07-30 14:06 ` [PATCH 6.18 065/675] wifi: cfg80211: cancel sched scan results work on unregister Greg Kroah-Hartman
` (615 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:06 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, AutonomousCodeSecurity,
Xiang Mei (Microsoft), Florian Westphal, Steffen Klassert,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Xiang Mei (Microsoft) <xmei5@asu.edu>
[ Upstream commit f38f8cce2f7e79775b3db7e8a5eacda04ac908e4 ]
xfrm_hash_rebuild()'s first loop preallocates the bins/chains the reinsert
loop needs, so the reinsert (after hlist_del_rcu()) cannot allocate or
fail. But its guard is inverted: it skips policies with prefixlen <
threshold and preallocates for the rest.
prefixlen < threshold is exactly when policy_hash_bysel() returns NULL and
the reinsert takes the allocating xfrm_policy_inexact_insert() path. So the
loop preallocates for the exact policies (which never allocate) and skips
the inexact ones, whose bin/node is then allocated GFP_ATOMIC during
reinsert. On failure the error path only WARN_ONCE()s and continues,
leaving a poisoned bydst node; the next rebuild's hlist_del_rcu()
dereferences LIST_POISON2 and takes a GPF. Reachable under memory pressure,
deterministic via failslab.
Invert the guard so preallocation covers exactly the reinserted policies;
the reinsert then allocates nothing and cannot fail.
Crash:
Oops: general protection fault, probably for non-canonical address
0xfbd59c0000000024: 0000 [#1] SMP KASAN NOPTI
KASAN: maybe wild-memory-access in range [0xdead...]
...
Workqueue: events xfrm_hash_rebuild
RIP: 0010:xfrm_hash_rebuild+0x5b3/0x1190
RAX: dead000000000122 (LIST_POISON2 + offset)
...
Call Trace:
hlist_del_rcu (include/linux/rculist.h:599)
xfrm_hash_rebuild (net/xfrm/xfrm_policy.c:1365)
process_one_work (kernel/workqueue.c:3322)
worker_thread (kernel/workqueue.c:3486)
kthread (kernel/kthread.c:436)
ret_from_fork (arch/x86/kernel/process.c:158)
ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
...
Kernel panic - not syncing: Fatal exception in interrupt
Fixes: 24969facd704 ("xfrm: policy: store inexact policies in an rhashtable")
Reported-by: AutonomousCodeSecurity@microsoft.com
Signed-off-by: Xiang Mei (Microsoft) <xmei5@asu.edu>
Reviewed-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/xfrm/xfrm_policy.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c
index 4dad1f8172286a..25f9cbd3ce6a4f 100644
--- a/net/xfrm/xfrm_policy.c
+++ b/net/xfrm/xfrm_policy.c
@@ -1329,8 +1329,8 @@ static void xfrm_hash_rebuild(struct work_struct *work)
}
}
- if (policy->selector.prefixlen_d < dbits ||
- policy->selector.prefixlen_s < sbits)
+ if (policy->selector.prefixlen_d >= dbits &&
+ policy->selector.prefixlen_s >= sbits)
continue;
bin = xfrm_policy_inexact_alloc_bin(policy, dir);
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 065/675] wifi: cfg80211: cancel sched scan results work on unregister
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (63 preceding siblings ...)
2026-07-30 14:06 ` [PATCH 6.18 064/675] xfrm: policy: preallocate inexact bins before xfrm_hash_rebuild reinsert Greg Kroah-Hartman
@ 2026-07-30 14:06 ` Greg Kroah-Hartman
2026-07-30 14:06 ` [PATCH 6.18 066/675] wifi: ipw2100: fix potential memory leak in ipw2100_pci_init_one() Greg Kroah-Hartman
` (614 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:06 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Cen Zhang, Johannes Berg,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Cen Zhang <zzzccc427@gmail.com>
[ Upstream commit edf0730be33696a1bd142792830d392129e495cc ]
cfg80211_sched_scan_results() can queue rdev->sched_scan_res_wk from a
driver result notification while a scheduled scan request is present. The
work callback recovers the containing cfg80211_registered_device and then
locks the wiphy and walks the scheduled-scan request list.
wiphy_unregister() already makes the wiphy unreachable and drains rdev work
items before cfg80211_dev_free() can release the object, but it does not
drain sched_scan_res_wk. A queued or running result work item can therefore
cross the unregister/free boundary and access freed rdev state.
The buggy scenario involves two paths, with each column showing the order
within that path:
scheduled-scan result path: unregister/free path:
1. cfg80211_sched_scan_results() 1. interface teardown stops and
queues rdev->sched_scan_res_wk. removes the scheduled scan request.
2. cfg80211_wq starts the work 2. wiphy_unregister() drains other
item and recovers rdev. rdev work items.
3. The worker locks rdev->wiphy 3. cfg80211_dev_free() destroys and
and walks rdev state. frees rdev.
Cancel sched_scan_res_wk in wiphy_unregister() alongside the other rdev
work items. cancel_work_sync() removes a pending result notification and
waits for an already running callback, so cfg80211_dev_free() cannot free
rdev while this work item is still active.
Validation reproduced this kernel report:
BUG: KASAN: use-after-free in cfg80211_sched_scan_results_wk+0x4a6/0x530
Workqueue: cfg80211 cfg80211_sched_scan_results_wk [cfg80211]
Read of size 8
Call trace:
dump_stack_lvl+0x66/0xa0
print_report+0xce/0x630
cfg80211_sched_scan_results_wk+0x4a6/0x530
srso_alias_return_thunk+0x5/0xfbef5
__virt_addr_valid+0x224/0x430
kasan_report+0xac/0xe0
lockdep_hardirqs_on_prepare+0xea/0x1a0
process_one_work+0x8d0/0x18f0 (kernel/workqueue.c:3212)
lock_is_held_type+0x8f/0x100
worker_thread+0x5ad/0xfd0
__kthread_parkme+0xc6/0x200
kthread+0x31e/0x410
trace_hardirqs_on+0x1a/0x170
ret_from_fork+0x576/0x810
__switch_to+0x57e/0xe20
__switch_to_asm+0x33/0x70
ret_from_fork_asm+0x1a/0x30
Fixes: 807f8a8c3004 ("cfg80211/nl80211: add support for scheduled scans")
Assisted-by: Codex:gpt-5.5
Signed-off-by: Cen Zhang <zzzccc427@gmail.com>
Link: https://patch.msgid.link/20260619162542.3878296-1-zzzccc427@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/wireless/core.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/net/wireless/core.c b/net/wireless/core.c
index 6b204ca91a140b..34b76479f888bf 100644
--- a/net/wireless/core.c
+++ b/net/wireless/core.c
@@ -1195,6 +1195,7 @@ void wiphy_unregister(struct wiphy *wiphy)
/* this has nothing to do now but make sure it's gone */
cancel_work_sync(&rdev->wiphy_work);
+ cancel_work_sync(&rdev->sched_scan_res_wk);
cancel_work_sync(&rdev->rfkill_block);
cancel_work_sync(&rdev->conn_work);
flush_work(&rdev->event_work);
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 066/675] wifi: ipw2100: fix potential memory leak in ipw2100_pci_init_one()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (64 preceding siblings ...)
2026-07-30 14:06 ` [PATCH 6.18 065/675] wifi: cfg80211: cancel sched scan results work on unregister Greg Kroah-Hartman
@ 2026-07-30 14:06 ` Greg Kroah-Hartman
2026-07-30 14:06 ` [PATCH 6.18 067/675] wifi: cfg80211: Fix an error handling path in cfg80211_wext_siwscan() Greg Kroah-Hartman
` (613 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:06 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Abdun Nihaal, Johannes Berg,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Abdun Nihaal <nihaal@cse.iitm.ac.in>
[ Upstream commit 0d388f62031dbabcba0f44bb91b59f10e88cac17 ]
The memory allocated in the ipw2100_alloc_device() function is not freed
in some of the error paths in ipw2100_pci_init_one(). Fix that by
converting the direct return into a goto to the error path return.
The error path when pci_enable_device() fails cannot jump to fail, since
at this point priv is not set, so perform error handling inline.
Fixes: 2c86c275015c ("Add ipw2100 wireless driver.")
Signed-off-by: Abdun Nihaal <nihaal@cse.iitm.ac.in>
Link: https://patch.msgid.link/20260620065242.93798-1-nihaal@cse.iitm.ac.in
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/wireless/intel/ipw2x00/ipw2100.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/net/wireless/intel/ipw2x00/ipw2100.c b/drivers/net/wireless/intel/ipw2x00/ipw2100.c
index 215814861cbda5..0808e69c3c1786 100644
--- a/drivers/net/wireless/intel/ipw2x00/ipw2100.c
+++ b/drivers/net/wireless/intel/ipw2x00/ipw2100.c
@@ -6162,6 +6162,8 @@ static int ipw2100_pci_init_one(struct pci_dev *pci_dev,
if (err) {
printk(KERN_WARNING DRV_NAME
"Error calling pci_enable_device.\n");
+ free_libipw(dev, 0);
+ pci_iounmap(pci_dev, ioaddr);
return err;
}
@@ -6174,16 +6176,14 @@ static int ipw2100_pci_init_one(struct pci_dev *pci_dev,
if (err) {
printk(KERN_WARNING DRV_NAME
"Error calling pci_set_dma_mask.\n");
- pci_disable_device(pci_dev);
- return err;
+ goto fail;
}
err = pci_request_regions(pci_dev, DRV_NAME);
if (err) {
printk(KERN_WARNING DRV_NAME
"Error calling pci_request_regions.\n");
- pci_disable_device(pci_dev);
- return err;
+ goto fail;
}
/* We disable the RETRY_TIMEOUT register (0x41) to keep
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 067/675] wifi: cfg80211: Fix an error handling path in cfg80211_wext_siwscan()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (65 preceding siblings ...)
2026-07-30 14:06 ` [PATCH 6.18 066/675] wifi: ipw2100: fix potential memory leak in ipw2100_pci_init_one() Greg Kroah-Hartman
@ 2026-07-30 14:06 ` Greg Kroah-Hartman
2026-07-30 14:06 ` [PATCH 6.18 068/675] wifi: mac80211_hwsim: clamp virtio RX length before skb_put Greg Kroah-Hartman
` (612 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:06 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Christophe JAILLET, Johannes Berg,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
[ Upstream commit c6659f66d4ee4841aafae5659d2ef5e4c5c63cb6 ]
If the test against IEEE80211_MAX_SSID_LEN fails, then 'creq' leaks.
Use the existing error handling path to fix it.
Fixes: 2a5193119269 ("cfg80211/nl80211: scanning (and mac80211 update to use it)")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://patch.msgid.link/a1be7eea4da0da18f90589af252bb76a18a61978.1781984889.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/wireless/scan.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/net/wireless/scan.c b/net/wireless/scan.c
index 2f2104bb0d52ff..27d5f99dbb2289 100644
--- a/net/wireless/scan.c
+++ b/net/wireless/scan.c
@@ -3627,8 +3627,10 @@ int cfg80211_wext_siwscan(struct net_device *dev,
/* translate "Scan for SSID" request */
if (wreq) {
if (wrqu->data.flags & IW_SCAN_THIS_ESSID) {
- if (wreq->essid_len > IEEE80211_MAX_SSID_LEN)
- return -EINVAL;
+ if (wreq->essid_len > IEEE80211_MAX_SSID_LEN) {
+ err = -EINVAL;
+ goto out;
+ }
memcpy(creq->req.ssids[0].ssid, wreq->essid,
wreq->essid_len);
creq->req.ssids[0].ssid_len = wreq->essid_len;
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 068/675] wifi: mac80211_hwsim: clamp virtio RX length before skb_put
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (66 preceding siblings ...)
2026-07-30 14:06 ` [PATCH 6.18 067/675] wifi: cfg80211: Fix an error handling path in cfg80211_wext_siwscan() Greg Kroah-Hartman
@ 2026-07-30 14:06 ` Greg Kroah-Hartman
2026-07-30 14:06 ` [PATCH 6.18 069/675] wifi: mac80211: fix unsol_bcast_probe_resp double free on alloc failure Greg Kroah-Hartman
` (611 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:06 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Bryam Vargas, Johannes Berg,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Bryam Vargas <hexlabsecurity@proton.me>
[ Upstream commit 10a2b430f8f06ae14b9590b6f6faa6b588ef0654 ]
hwsim_virtio_rx_work() passes the virtqueue used-ring length reported by
the device straight to skb_put() on a fixed-size receive skb. A backend
reporting a length larger than the skb tailroom drives skb_put() past the
buffer end and hits skb_over_panic() -- a host-triggerable guest panic
(denial of service).
Clamp the length to the skb's available room before skb_put(). A
conforming device never reports more than the posted buffer size, so valid
frames are unaffected; a truncated over-report then fails the
length/header checks in hwsim_virtio_handle_cmd() and is dropped, so
truncating rather than dropping here cannot be turned into a parsing
problem.
Fixes: 5d44fe7c9808 ("mac80211_hwsim: add frame transmission support over virtio")
Signed-off-by: Bryam Vargas <hexlabsecurity@proton.me>
Link: https://patch.msgid.link/20260620-b4-disp-474bee37-v1-1-1a4d37f3e2d4@proton.me
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/wireless/virtual/mac80211_hwsim.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/net/wireless/virtual/mac80211_hwsim.c b/drivers/net/wireless/virtual/mac80211_hwsim.c
index 20815fdc9d3764..a0724e1c530709 100644
--- a/drivers/net/wireless/virtual/mac80211_hwsim.c
+++ b/drivers/net/wireless/virtual/mac80211_hwsim.c
@@ -6898,6 +6898,7 @@ static void hwsim_virtio_rx_work(struct work_struct *work)
skb->data = skb->head;
skb_reset_tail_pointer(skb);
+ len = min(len, skb_end_offset(skb));
skb_put(skb, len);
hwsim_virtio_handle_cmd(skb);
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 069/675] wifi: mac80211: fix unsol_bcast_probe_resp double free on alloc failure
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (67 preceding siblings ...)
2026-07-30 14:06 ` [PATCH 6.18 068/675] wifi: mac80211_hwsim: clamp virtio RX length before skb_put Greg Kroah-Hartman
@ 2026-07-30 14:06 ` Greg Kroah-Hartman
2026-07-30 14:06 ` [PATCH 6.18 070/675] wifi: mac80211: fix fils_discovery " Greg Kroah-Hartman
` (610 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:06 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Weiming Shi, Xiang Mei,
Johannes Berg, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Xiang Mei <xmei5@asu.edu>
[ Upstream commit 1d067abcd37062426c59ec73dbc4e87a63f33fea ]
ieee80211_set_unsol_bcast_probe_resp() calls kfree_rcu() on the old
template before allocating the replacement. If the kzalloc() then fails,
it returns -ENOMEM while link->u.ap.unsol_bcast_probe_resp still points
at the object already queued for freeing. A later update or AP teardown
re-queues that same rcu_head; the second free is caught by KASAN when the
RCU sheaf is processed in softirq:
BUG: KASAN: double-free in rcu_free_sheaf (mm/slub.c:5850)
Free of addr ffff88800d06f300 by task exploit/145
...
__rcu_free_sheaf_prepare (mm/slub.c:2634 mm/slub.c:2940)
rcu_free_sheaf (mm/slub.c:5850)
rcu_core (kernel/rcu/tree.c:2617 kernel/rcu/tree.c:2869)
handle_softirqs (kernel/softirq.c:622)
The buggy address belongs to the cache kmalloc-128 of size 128
Queue the old object for kfree_rcu() only after the new one is published,
matching ieee80211_set_probe_resp() and ieee80211_set_s1g_short_beacon().
Fixes: 3b1c256eb4ae ("wifi: mac80211: fixes in FILS discovery updates")
Reported-by: Weiming Shi <bestswngs@gmail.com>
Assisted-by: Claude:claude-opus-4-8
Signed-off-by: Xiang Mei <xmei5@asu.edu>
Link: https://patch.msgid.link/20260621093532.884188-1-xmei5@asu.edu
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/mac80211/cfg.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index d32eacbb7517d7..001e4bb55b6199 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -1157,8 +1157,6 @@ ieee80211_set_unsol_bcast_probe_resp(struct ieee80211_sub_if_data *sdata,
link_conf->unsol_bcast_probe_resp_interval = params->interval;
old = sdata_dereference(link->u.ap.unsol_bcast_probe_resp, sdata);
- if (old)
- kfree_rcu(old, rcu_head);
if (params->tmpl && params->tmpl_len) {
new = kzalloc(sizeof(*new) + params->tmpl_len, GFP_KERNEL);
@@ -1171,6 +1169,9 @@ ieee80211_set_unsol_bcast_probe_resp(struct ieee80211_sub_if_data *sdata,
RCU_INIT_POINTER(link->u.ap.unsol_bcast_probe_resp, NULL);
}
+ if (old)
+ kfree_rcu(old, rcu_head);
+
*changed |= BSS_CHANGED_UNSOL_BCAST_PROBE_RESP;
return 0;
}
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 070/675] wifi: mac80211: fix fils_discovery double free on alloc failure
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (68 preceding siblings ...)
2026-07-30 14:06 ` [PATCH 6.18 069/675] wifi: mac80211: fix unsol_bcast_probe_resp double free on alloc failure Greg Kroah-Hartman
@ 2026-07-30 14:06 ` Greg Kroah-Hartman
2026-07-30 14:06 ` [PATCH 6.18 071/675] wifi: libertas: fix memory leak in helper_firmware_cb() Greg Kroah-Hartman
` (609 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:06 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Weiming Shi, Xiang Mei,
Johannes Berg, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Xiang Mei <xmei5@asu.edu>
[ Upstream commit 286e52a799fa158bdbd77da1426c4d93f9a6e7ad ]
ieee80211_set_fils_discovery() calls kfree_rcu() on the old template
before allocating the replacement. If the kzalloc() then fails, it
returns -ENOMEM while link->u.ap.fils_discovery still points at the
object already queued for freeing. A later update or AP teardown
(ieee80211_stop_ap()) re-queues that same rcu_head; the second free is
caught by KASAN when the RCU sheaf is processed in softirq:
BUG: KASAN: double-free in rcu_free_sheaf (mm/slub.c:5850)
Free of addr ffff88800c065280 by task swapper/0/0
...
__rcu_free_sheaf_prepare (mm/slub.c:2634 mm/slub.c:2940)
rcu_free_sheaf (mm/slub.c:5850)
rcu_core (kernel/rcu/tree.c:2617 kernel/rcu/tree.c:2869)
handle_softirqs (kernel/softirq.c:622)
The buggy address belongs to the cache kmalloc-96 of size 96
Queue the old object for kfree_rcu() only after the new one is published,
matching ieee80211_set_probe_resp() and ieee80211_set_s1g_short_beacon().
Fixes: 3b1c256eb4ae ("wifi: mac80211: fixes in FILS discovery updates")
Reported-by: Weiming Shi <bestswngs@gmail.com>
Assisted-by: Claude:claude-opus-4-8
Signed-off-by: Xiang Mei <xmei5@asu.edu>
Link: https://patch.msgid.link/20260621093532.884188-2-xmei5@asu.edu
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/mac80211/cfg.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 001e4bb55b6199..f6232948bc0f4a 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -1124,9 +1124,6 @@ static int ieee80211_set_fils_discovery(struct ieee80211_sub_if_data *sdata,
fd->max_interval = params->max_interval;
old = sdata_dereference(link->u.ap.fils_discovery, sdata);
- if (old)
- kfree_rcu(old, rcu_head);
-
if (params->tmpl && params->tmpl_len) {
new = kzalloc(sizeof(*new) + params->tmpl_len, GFP_KERNEL);
if (!new)
@@ -1138,6 +1135,9 @@ static int ieee80211_set_fils_discovery(struct ieee80211_sub_if_data *sdata,
RCU_INIT_POINTER(link->u.ap.fils_discovery, NULL);
}
+ if (old)
+ kfree_rcu(old, rcu_head);
+
*changed |= BSS_CHANGED_FILS_DISCOVERY;
return 0;
}
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 071/675] wifi: libertas: fix memory leak in helper_firmware_cb()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (69 preceding siblings ...)
2026-07-30 14:06 ` [PATCH 6.18 070/675] wifi: mac80211: fix fils_discovery " Greg Kroah-Hartman
@ 2026-07-30 14:06 ` Greg Kroah-Hartman
2026-07-30 14:06 ` [PATCH 6.18 072/675] wifi: mac80211: defer link RX stats percpu free to RCU Greg Kroah-Hartman
` (608 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:06 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Dawei Feng, Johannes Berg,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Dawei Feng <dawei.feng@seu.edu.cn>
[ Upstream commit 63c2391deefb31e1b801b7f32bd502ca4808639b ]
helper_firmware_cb() neglects to free the single-stage firmware image
after a successful async load, leading to a memory leak in the USB
firmware-download path.
Fix this memory leak by calling release_firmware() immediately after
lbs_fw_loaded() returns.
The bug was first flagged by an experimental analysis tool we are
developing for kernel memory-management bugs while analyzing
v6.13-rc1. The tool is still under development and is not yet publicly
available. Manual inspection confirms that the bug is still present in
the current wireless tree.
An x86_64 allyesconfig build showed no new warnings. As we do not have
compatible Libertas USB hardware for exercising this firmware-download
path, no runtime testing was able to be performed.
Fixes: 1dfba3060fe7 ("libertas: move firmware lifetime handling to firmware.c")
Signed-off-by: Dawei Feng <dawei.feng@seu.edu.cn>
Link: https://patch.msgid.link/20260624085343.575508-1-dawei.feng@seu.edu.cn
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/wireless/marvell/libertas/firmware.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/net/wireless/marvell/libertas/firmware.c b/drivers/net/wireless/marvell/libertas/firmware.c
index f124110944b7e9..9bf7d4c207b9ed 100644
--- a/drivers/net/wireless/marvell/libertas/firmware.c
+++ b/drivers/net/wireless/marvell/libertas/firmware.c
@@ -78,6 +78,7 @@ static void helper_firmware_cb(const struct firmware *firmware, void *context)
} else {
/* No main firmware needed for this helper --> success! */
lbs_fw_loaded(priv, 0, firmware, NULL);
+ release_firmware(firmware);
}
}
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 072/675] wifi: mac80211: defer link RX stats percpu free to RCU
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (70 preceding siblings ...)
2026-07-30 14:06 ` [PATCH 6.18 071/675] wifi: libertas: fix memory leak in helper_firmware_cb() Greg Kroah-Hartman
@ 2026-07-30 14:06 ` Greg Kroah-Hartman
2026-07-30 14:06 ` [PATCH 6.18 073/675] wifi: p54: validate RX frame length in p54_rx_eeprom_readback() Greg Kroah-Hartman
` (607 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:06 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Johannes Berg, Kaixuan Li, Maoyi Xie,
Johannes Berg, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Maoyi Xie <maoyixie.tju@gmail.com>
[ Upstream commit aa2eb62525188269cdd402a583b9a8ed94657ff0 ]
sta_remove_link() frees a removed MLO link's RX stats percpu buffer right
away, but defers only the link container to RCU:
sta_info_free_link(&alloc->info);
kfree_rcu(alloc, rcu_head);
The RX fast path reads link_sta under rcu_read_lock and writes the percpu
stats. A reader that resolved link_sta before the removal keeps the
pointer. The container stays alive from the kfree_rcu, so the read still
works. But the percpu block it points to is already freed. This needs
uses_rss. That is when pcpu_rx_stats exists.
The full STA teardown frees the deflink stats only after
synchronize_net(). The link removal path had no such barrier. The race is
hard to win in practice, but the free should still wait for RCU.
Free the link together with its data from a single RCU callback, so the
percpu block is reclaimed only after readers drain.
Fixes: c71420db653a ("wifi: mac80211: RCU-ify link STA pointers")
Link: https://lore.kernel.org/r/20260626080158.3589711-1-maoyixie.tju@gmail.com
Suggested-by: Johannes Berg <johannes@sipsolutions.net>
Co-developed-by: Kaixuan Li <kaixuan.li@ntu.edu.sg>
Signed-off-by: Kaixuan Li <kaixuan.li@ntu.edu.sg>
Signed-off-by: Maoyi Xie <maoyixie.tju@gmail.com>
Link: https://patch.msgid.link/20260627083028.3826810-1-maoyixie.tju@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/mac80211/sta_info.c | 15 +++++++++++----
1 file changed, 11 insertions(+), 4 deletions(-)
diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c
index b0d9bb830f2931..54a6b20a4c5cd5 100644
--- a/net/mac80211/sta_info.c
+++ b/net/mac80211/sta_info.c
@@ -355,6 +355,15 @@ static void sta_info_free_link(struct link_sta_info *link_sta)
free_percpu(link_sta->pcpu_rx_stats);
}
+static void sta_link_free_rcu(struct rcu_head *head)
+{
+ struct sta_link_alloc *alloc =
+ container_of(head, struct sta_link_alloc, rcu_head);
+
+ sta_info_free_link(&alloc->info);
+ kfree(alloc);
+}
+
static void sta_accumulate_removed_link_stats(struct sta_info *sta, int link_id)
{
struct link_sta_info *link_sta = wiphy_dereference(sta->local->hw.wiphy,
@@ -427,10 +436,8 @@ static void sta_remove_link(struct sta_info *sta, unsigned int link_id,
RCU_INIT_POINTER(sta->link[link_id], NULL);
RCU_INIT_POINTER(sta->sta.link[link_id], NULL);
- if (alloc) {
- sta_info_free_link(&alloc->info);
- kfree_rcu(alloc, rcu_head);
- }
+ if (alloc)
+ call_rcu(&alloc->rcu_head, sta_link_free_rcu);
ieee80211_sta_recalc_aggregates(&sta->sta);
}
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 073/675] wifi: p54: validate RX frame length in p54_rx_eeprom_readback()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (71 preceding siblings ...)
2026-07-30 14:06 ` [PATCH 6.18 072/675] wifi: mac80211: defer link RX stats percpu free to RCU Greg Kroah-Hartman
@ 2026-07-30 14:06 ` Greg Kroah-Hartman
2026-07-30 14:06 ` [PATCH 6.18 074/675] wifi: cfg80211: convert pmsr_free_wk to wiphy_work to fix deadlock Greg Kroah-Hartman
` (606 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:06 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Weiming Shi, Xiang Mei,
Christian Lamparter, Johannes Berg, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Xiang Mei <xmei5@asu.edu>
[ Upstream commit ebd6d37fa94bee929e0b4c9ca19fdf9b1dcf6cea ]
p54_rx_eeprom_readback() copies the requested EEPROM slice out of a
device-supplied readback frame without checking that the skb actually holds
that many bytes. Commit da1b9a55ff11 ("wifi: p54: prevent buffer-overflow in
p54_rx_eeprom_readback()") closed the destination overflow by copying a
fixed priv->eeprom_slice_size (and rejecting a mismatched advertised len),
but the source side is still unbounded: nothing verifies the frame is long
enough to supply that many bytes.
A malicious USB device can send a short frame whose advertised len matches
priv->eeprom_slice_size while the payload is truncated. The equality check
passes and memcpy() reads past the end of the skb, leaking adjacent heap:
BUG: KASAN: slab-out-of-bounds in p54_rx (drivers/net/wireless/intersil/p54/txrx.c:507)
Read of size 1016 at addr ffff88800f077114 by task swapper/0/0
Call Trace:
<IRQ>
...
__asan_memcpy (mm/kasan/shadow.c:105)
p54_rx (drivers/net/wireless/intersil/p54/txrx.c:507)
p54u_rx_cb (drivers/net/wireless/intersil/p54/p54usb.c:163)
__usb_hcd_giveback_urb (drivers/usb/core/hcd.c:1657)
dummy_timer (drivers/usb/gadget/udc/dummy_hcd.c:2005)
...
</IRQ>
The buggy address belongs to the object at ffff88800f0770c0
which belongs to the cache skbuff_small_head of size 704
The buggy address is located 84 bytes inside of
allocated 704-byte region [ffff88800f0770c0, ffff88800f077380)
Check that the slice fits in the skb before copying.
Fixes: 7cb770729ba8 ("p54: move eeprom code into common library")
Reported-by: Weiming Shi <bestswngs@gmail.com>
Assisted-by: Claude:claude-opus-4-8
Signed-off-by: Xiang Mei <xmei5@asu.edu>
Acked-by: Christian Lamparter <chunkeey@gmail.com>
Link: https://patch.msgid.link/20260628000510.4152481-1-xmei5@asu.edu
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/wireless/intersil/p54/txrx.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/net/wireless/intersil/p54/txrx.c b/drivers/net/wireless/intersil/p54/txrx.c
index 1294a1d6528e2c..9f491334c8d043 100644
--- a/drivers/net/wireless/intersil/p54/txrx.c
+++ b/drivers/net/wireless/intersil/p54/txrx.c
@@ -499,11 +499,19 @@ static void p54_rx_eeprom_readback(struct p54_common *priv,
if (le16_to_cpu(eeprom->v2.len) != priv->eeprom_slice_size)
return;
+ if (eeprom->v2.data + priv->eeprom_slice_size >
+ skb_tail_pointer(skb))
+ return;
+
memcpy(priv->eeprom, eeprom->v2.data, priv->eeprom_slice_size);
} else {
if (le16_to_cpu(eeprom->v1.len) != priv->eeprom_slice_size)
return;
+ if (eeprom->v1.data + priv->eeprom_slice_size >
+ skb_tail_pointer(skb))
+ return;
+
memcpy(priv->eeprom, eeprom->v1.data, priv->eeprom_slice_size);
}
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 074/675] wifi: cfg80211: convert pmsr_free_wk to wiphy_work to fix deadlock
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (72 preceding siblings ...)
2026-07-30 14:06 ` [PATCH 6.18 073/675] wifi: p54: validate RX frame length in p54_rx_eeprom_readback() Greg Kroah-Hartman
@ 2026-07-30 14:06 ` Greg Kroah-Hartman
2026-07-30 14:06 ` [PATCH 6.18 075/675] wifi: nl80211: free RNR data on MBSSID mismatch Greg Kroah-Hartman
` (605 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:06 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Peddolla Harshavardhan Reddy,
Johannes Berg, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Peddolla Harshavardhan Reddy <peddolla.reddy@oss.qualcomm.com>
[ Upstream commit 2b0eab425e1f658d8fe1df7590e3b9af5959505e ]
When a netlink socket that owns a PMSR session is closed,
cfg80211_release_pmsr() clears the request's nl_portid and queues
pmsr_free_wk to call cfg80211_pmsr_process_abort() asynchronously.
If the interface tears down concurrently, cfg80211_pmsr_wdev_down()
is called under wiphy_lock and calls cancel_work_sync(&pmsr_free_wk)
to wait for any running work. The work function acquires wiphy_lock
via guard(wiphy) before calling process_abort.
This is a deadlock: wdev_down holds wiphy_lock and blocks inside
cancel_work_sync(); pmsr_free_wk blocks trying to acquire that same
wiphy_lock. Neither thread can proceed.
The same deadlock is reachable from cfg80211_leave_locked(), which
calls cfg80211_pmsr_wdev_down() for all interface types under
wiphy_lock.
Fix this by converting pmsr_free_wk from a plain work_struct to a
wiphy_work. The wiphy_work dispatcher holds wiphy_lock when running
work items, so the explicit guard(wiphy) in the work function is no
longer needed. wiphy_work_cancel() can be called safely while holding
wiphy_lock - since wiphy_lock prevents the work from running
concurrently, wiphy_work_cancel() never blocks, eliminating the
deadlock.
Remove the cancel_work_sync() for pmsr_free_wk from the
NETDEV_GOING_DOWN handler. cfg80211_leave(), called unconditionally
just before it, already cancels any pending work under wiphy_lock
via wiphy_work_cancel() inside cfg80211_pmsr_wdev_down().
Fixes: 6dccbc9f3e1d ("wifi: cfg80211: cancel pmsr_free_wk in cfg80211_pmsr_wdev_down")
Signed-off-by: Peddolla Harshavardhan Reddy <peddolla.reddy@oss.qualcomm.com>
Link: https://patch.msgid.link/20260703082523.2629324-1-peddolla.reddy@oss.qualcomm.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
include/net/cfg80211.h | 2 +-
net/wireless/core.c | 3 +--
net/wireless/core.h | 2 +-
net/wireless/pmsr.c | 8 +++-----
4 files changed, 6 insertions(+), 9 deletions(-)
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index 820e299f06b5ee..1509be85139ecf 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -6740,7 +6740,7 @@ struct wireless_dev {
struct list_head pmsr_list;
spinlock_t pmsr_lock;
- struct work_struct pmsr_free_wk;
+ struct wiphy_work pmsr_free_wk;
unsigned long unprot_beacon_reported;
diff --git a/net/wireless/core.c b/net/wireless/core.c
index 34b76479f888bf..efbf7b3046342e 100644
--- a/net/wireless/core.c
+++ b/net/wireless/core.c
@@ -1444,7 +1444,7 @@ void cfg80211_init_wdev(struct wireless_dev *wdev)
INIT_LIST_HEAD(&wdev->mgmt_registrations);
INIT_LIST_HEAD(&wdev->pmsr_list);
spin_lock_init(&wdev->pmsr_lock);
- INIT_WORK(&wdev->pmsr_free_wk, cfg80211_pmsr_free_wk);
+ wiphy_work_init(&wdev->pmsr_free_wk, cfg80211_pmsr_free_wk);
#ifdef CONFIG_CFG80211_WEXT
wdev->wext.default_key = -1;
@@ -1579,7 +1579,6 @@ static int cfg80211_netdev_notifier_call(struct notifier_block *nb,
}
/* since we just did cfg80211_leave() nothing to do there */
cancel_work_sync(&wdev->disconnect_wk);
- cancel_work_sync(&wdev->pmsr_free_wk);
break;
case NETDEV_DOWN:
wiphy_lock(&rdev->wiphy);
diff --git a/net/wireless/core.h b/net/wireless/core.h
index d5d78752227af9..9bfd39af1742e1 100644
--- a/net/wireless/core.h
+++ b/net/wireless/core.h
@@ -566,7 +566,7 @@ cfg80211_get_6ghz_power_type(const u8 *elems, size_t elems_len);
void cfg80211_release_pmsr(struct wireless_dev *wdev, u32 portid);
void cfg80211_pmsr_wdev_down(struct wireless_dev *wdev);
-void cfg80211_pmsr_free_wk(struct work_struct *work);
+void cfg80211_pmsr_free_wk(struct wiphy *wiphy, struct wiphy_work *work);
void cfg80211_remove_link(struct wireless_dev *wdev, unsigned int link_id);
void cfg80211_remove_links(struct wireless_dev *wdev);
diff --git a/net/wireless/pmsr.c b/net/wireless/pmsr.c
index 13801cf35e9fca..d2546c27879fa4 100644
--- a/net/wireless/pmsr.c
+++ b/net/wireless/pmsr.c
@@ -625,13 +625,11 @@ static void cfg80211_pmsr_process_abort(struct wireless_dev *wdev)
}
}
-void cfg80211_pmsr_free_wk(struct work_struct *work)
+void cfg80211_pmsr_free_wk(struct wiphy *wiphy, struct wiphy_work *work)
{
struct wireless_dev *wdev = container_of(work, struct wireless_dev,
pmsr_free_wk);
- guard(wiphy)(wdev->wiphy);
-
cfg80211_pmsr_process_abort(wdev);
}
@@ -647,7 +645,7 @@ void cfg80211_pmsr_wdev_down(struct wireless_dev *wdev)
}
spin_unlock_bh(&wdev->pmsr_lock);
- cancel_work_sync(&wdev->pmsr_free_wk);
+ wiphy_work_cancel(wdev->wiphy, &wdev->pmsr_free_wk);
if (found)
cfg80211_pmsr_process_abort(wdev);
@@ -662,7 +660,7 @@ void cfg80211_release_pmsr(struct wireless_dev *wdev, u32 portid)
list_for_each_entry(req, &wdev->pmsr_list, list) {
if (req->nl_portid == portid) {
req->nl_portid = 0;
- schedule_work(&wdev->pmsr_free_wk);
+ wiphy_work_queue(wdev->wiphy, &wdev->pmsr_free_wk);
}
}
spin_unlock_bh(&wdev->pmsr_lock);
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 075/675] wifi: nl80211: free RNR data on MBSSID mismatch
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (73 preceding siblings ...)
2026-07-30 14:06 ` [PATCH 6.18 074/675] wifi: cfg80211: convert pmsr_free_wk to wiphy_work to fix deadlock Greg Kroah-Hartman
@ 2026-07-30 14:06 ` Greg Kroah-Hartman
2026-07-30 14:06 ` [PATCH 6.18 076/675] wifi: cfg80211: derive S1G beacon TSF from S1G fields Greg Kroah-Hartman
` (604 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:06 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Zhao Li, Johannes Berg, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Zhao Li <enderaoelyther@gmail.com>
[ Upstream commit 07a95ec2b54774201fdf4ef7ffb0ca2ab19ed29c ]
nl80211_parse_beacon() rejects EMA RNR data when there are fewer RNR
entries than MBSSID entries.
The rejected RNR allocation has not been attached to the beacon data yet,
so free it before returning the error.
Fixes: dbbb27e183b1 ("cfg80211: support RNR for EMA AP")
Signed-off-by: Zhao Li <enderaoelyther@gmail.com>
Link: https://patch.msgid.link/20260610112208.1308-2-enderaoelyther@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/wireless/nl80211.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 6e41a4269e1c57..e765c992eb20e4 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -6232,8 +6232,10 @@ static int nl80211_parse_beacon(struct cfg80211_registered_device *rdev,
if (IS_ERR(rnr))
return PTR_ERR(rnr);
- if (rnr && rnr->cnt < bcn->mbssid_ies->cnt)
+ if (rnr && rnr->cnt < bcn->mbssid_ies->cnt) {
+ kfree(rnr);
return -EINVAL;
+ }
bcn->rnr_ies = rnr;
}
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 076/675] wifi: cfg80211: derive S1G beacon TSF from S1G fields
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (74 preceding siblings ...)
2026-07-30 14:06 ` [PATCH 6.18 075/675] wifi: nl80211: free RNR data on MBSSID mismatch Greg Kroah-Hartman
@ 2026-07-30 14:06 ` Greg Kroah-Hartman
2026-07-30 14:06 ` [PATCH 6.18 077/675] wifi: nl80211: validate nested MBSSID IE blobs Greg Kroah-Hartman
` (603 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:06 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Zhao Li, Lachlan Hodges,
Johannes Berg, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Zhao Li <enderaoelyther@gmail.com>
[ Upstream commit 4e5a4641e7b4763656336b7891d01359aaf363cd ]
cfg80211_inform_bss_frame_data() parses S1G beacons with the extension
frame layout, but still reads the TSF from the regular probe response
layout after the S1G branch. For S1G beacons that reads bytes at the
regular management-frame timestamp offset instead of the S1G timestamp.
Use the 32-bit S1G beacon timestamp and the S1G Beacon Compatibility
element's TSF completion field when informing an S1G BSS. Keep the
regular management-frame timestamp read in the non-S1G branch.
Fixes: 9eaffe5078ca ("cfg80211: convert S1G beacon to scan results")
Signed-off-by: Zhao Li <enderaoelyther@gmail.com>
Tested-by: Lachlan Hodges <lachlan.hodges@morsemicro.com>
Reviewed-by: Lachlan Hodges <lachlan.hodges@morsemicro.com>
Link: https://patch.msgid.link/20260611161943.91069-6-enderaoelyther@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/wireless/scan.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/net/wireless/scan.c b/net/wireless/scan.c
index 27d5f99dbb2289..af1e2ce1628dae 100644
--- a/net/wireless/scan.c
+++ b/net/wireless/scan.c
@@ -3326,14 +3326,15 @@ cfg80211_inform_bss_frame_data(struct wiphy *wiphy,
bssid = ext->u.s1g_beacon.sa;
capability = le16_to_cpu(compat->compat_info);
beacon_interval = le16_to_cpu(compat->beacon_int);
+ tsf = le32_to_cpu(ext->u.s1g_beacon.timestamp);
+ tsf |= (u64)le32_to_cpu(compat->tsf_completion) << 32;
} else {
bssid = mgmt->bssid;
beacon_interval = le16_to_cpu(mgmt->u.probe_resp.beacon_int);
capability = le16_to_cpu(mgmt->u.probe_resp.capab_info);
+ tsf = le64_to_cpu(mgmt->u.probe_resp.timestamp);
}
- tsf = le64_to_cpu(mgmt->u.probe_resp.timestamp);
-
if (ieee80211_is_probe_resp(mgmt->frame_control))
ftype = CFG80211_BSS_FTYPE_PRESP;
else if (ext)
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 077/675] wifi: nl80211: validate nested MBSSID IE blobs
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (75 preceding siblings ...)
2026-07-30 14:06 ` [PATCH 6.18 076/675] wifi: cfg80211: derive S1G beacon TSF from S1G fields Greg Kroah-Hartman
@ 2026-07-30 14:06 ` Greg Kroah-Hartman
2026-07-30 14:06 ` [PATCH 6.18 078/675] wifi: nl80211: constrain MBSSID TX link ID range Greg Kroah-Hartman
` (602 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:06 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Zhao Li, Johannes Berg, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Zhao Li <enderaoelyther@gmail.com>
[ Upstream commit 7f4b01812323443b55e4c65381c9dc851ff009e3 ]
Validate each nested NL80211_ATTR_MBSSID_ELEMS entry as a well-formed
information-element stream before storing it for beacon construction.
RNR parsing already validates each nested blob with validate_ie_attr()
before storing it. Apply the same syntactic IE validation to MBSSID
entries before counting and copying their data and length pointers.
Fixes: dc1e3cb8da8b ("nl80211: MBSSID and EMA support in AP mode")
Assisted-by: Codex:gpt-5.5
Assisted-by: Claude:claude-opus-4.8
Signed-off-by: Zhao Li <enderaoelyther@gmail.com>
Link: https://patch.msgid.link/20260612131854.43575-3-enderaoelyther@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/wireless/nl80211.c | 12 ++++++++++--
1 file changed, 10 insertions(+), 2 deletions(-)
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index e765c992eb20e4..5583edf4852775 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -6034,7 +6034,8 @@ static int nl80211_parse_mbssid_config(struct wiphy *wiphy,
}
static struct cfg80211_mbssid_elems *
-nl80211_parse_mbssid_elems(struct wiphy *wiphy, struct nlattr *attrs)
+nl80211_parse_mbssid_elems(struct wiphy *wiphy, struct nlattr *attrs,
+ struct netlink_ext_ack *extack)
{
struct nlattr *nl_elems;
struct cfg80211_mbssid_elems *elems;
@@ -6045,6 +6046,12 @@ nl80211_parse_mbssid_elems(struct wiphy *wiphy, struct nlattr *attrs)
return ERR_PTR(-EINVAL);
nla_for_each_nested(nl_elems, attrs, rem_elems) {
+ int ret;
+
+ ret = validate_ie_attr(nl_elems, extack);
+ if (ret)
+ return ERR_PTR(ret);
+
if (num_elems >= 255)
return ERR_PTR(-EINVAL);
num_elems++;
@@ -6216,7 +6223,8 @@ static int nl80211_parse_beacon(struct cfg80211_registered_device *rdev,
if (attrs[NL80211_ATTR_MBSSID_ELEMS]) {
struct cfg80211_mbssid_elems *mbssid =
nl80211_parse_mbssid_elems(&rdev->wiphy,
- attrs[NL80211_ATTR_MBSSID_ELEMS]);
+ attrs[NL80211_ATTR_MBSSID_ELEMS],
+ extack);
if (IS_ERR(mbssid))
return PTR_ERR(mbssid);
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 078/675] wifi: nl80211: constrain MBSSID TX link ID range
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (76 preceding siblings ...)
2026-07-30 14:06 ` [PATCH 6.18 077/675] wifi: nl80211: validate nested MBSSID IE blobs Greg Kroah-Hartman
@ 2026-07-30 14:06 ` Greg Kroah-Hartman
2026-07-30 14:06 ` [PATCH 6.18 079/675] wifi: cfg80211: validate PMSR measurement type data Greg Kroah-Hartman
` (601 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:06 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Zhao Li, Johannes Berg, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Zhao Li <enderaoelyther@gmail.com>
[ Upstream commit 172f06023669f0a96d32511669ff45c600731380 ]
MBSSID transmitted-profile link IDs are valid only in the range
0..IEEE80211_MLD_MAX_NUM_LINKS - 1. Constrain the nl80211 policy to
reject out-of-range values during attribute validation.
Fixes: 37523c3c47b3 ("wifi: nl80211: add link id of transmitted profile for MLO MBSSID")
Assisted-by: Codex:gpt-5.5
Assisted-by: Claude:claude-opus-4.8
Signed-off-by: Zhao Li <enderaoelyther@gmail.com>
Link: https://patch.msgid.link/20260612131854.43575-4-enderaoelyther@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/wireless/nl80211.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 5583edf4852775..237e5d7eeb47c3 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -501,7 +501,7 @@ nl80211_mbssid_config_policy[NL80211_MBSSID_CONFIG_ATTR_MAX + 1] = {
[NL80211_MBSSID_CONFIG_ATTR_TX_IFINDEX] = { .type = NLA_U32 },
[NL80211_MBSSID_CONFIG_ATTR_EMA] = { .type = NLA_FLAG },
[NL80211_MBSSID_CONFIG_ATTR_TX_LINK_ID] =
- NLA_POLICY_MAX(NLA_U8, IEEE80211_MLD_MAX_NUM_LINKS),
+ NLA_POLICY_RANGE(NLA_U8, 0, IEEE80211_MLD_MAX_NUM_LINKS - 1),
};
static const struct nla_policy
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 079/675] wifi: cfg80211: validate PMSR measurement type data
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (77 preceding siblings ...)
2026-07-30 14:06 ` [PATCH 6.18 078/675] wifi: nl80211: constrain MBSSID TX link ID range Greg Kroah-Hartman
@ 2026-07-30 14:06 ` Greg Kroah-Hartman
2026-07-30 14:06 ` [PATCH 6.18 080/675] wifi: cfg80211: validate PMSR FTM preamble range Greg Kroah-Hartman
` (600 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:06 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Zhao Li, Johannes Berg, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Zhao Li <enderaoelyther@gmail.com>
[ Upstream commit 41aa973eb05922848dded26875c55ef982ac1c49 ]
PMSR request parsing accepts missing or duplicated measurement type
entries in NL80211_PMSR_REQ_ATTR_DATA.
Track whether one measurement type was already provided, reject a
second one immediately, and return an error if the request data block
contains no measurement type at all.
Fixes: 9bb7e0f24e7e7 ("cfg80211: add peer measurement with FTM initiator API")
Assisted-by: Codex:gpt-5.5
Assisted-by: Claude:claude-opus-4.8
Signed-off-by: Zhao Li <enderaoelyther@gmail.com>
Link: https://patch.msgid.link/20260612133656.92900-2-enderaoelyther@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/wireless/pmsr.c | 19 +++++++++++++++++--
1 file changed, 17 insertions(+), 2 deletions(-)
diff --git a/net/wireless/pmsr.c b/net/wireless/pmsr.c
index d2546c27879fa4..fd14a3c2eab45b 100644
--- a/net/wireless/pmsr.c
+++ b/net/wireless/pmsr.c
@@ -196,6 +196,7 @@ static int pmsr_parse_peer(struct cfg80211_registered_device *rdev,
{
struct nlattr *tb[NL80211_PMSR_PEER_ATTR_MAX + 1];
struct nlattr *req[NL80211_PMSR_REQ_ATTR_MAX + 1];
+ bool have_measurement_type = false;
struct nlattr *treq;
int err, rem;
@@ -248,6 +249,14 @@ static int pmsr_parse_peer(struct cfg80211_registered_device *rdev,
}
nla_for_each_nested(treq, req[NL80211_PMSR_REQ_ATTR_DATA], rem) {
+ if (have_measurement_type) {
+ NL_SET_ERR_MSG_ATTR(info->extack, treq,
+ "multiple measurement types in request data");
+ return -EINVAL;
+ }
+
+ have_measurement_type = true;
+
switch (nla_type(treq)) {
case NL80211_PMSR_TYPE_FTM:
err = pmsr_parse_ftm(rdev, treq, out, info);
@@ -257,10 +266,16 @@ static int pmsr_parse_peer(struct cfg80211_registered_device *rdev,
"unsupported measurement type");
err = -EINVAL;
}
+ if (err)
+ return err;
}
- if (err)
- return err;
+ if (!have_measurement_type) {
+ NL_SET_ERR_MSG_ATTR(info->extack,
+ req[NL80211_PMSR_REQ_ATTR_DATA],
+ "missing measurement type in request data");
+ return -EINVAL;
+ }
return 0;
}
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 080/675] wifi: cfg80211: validate PMSR FTM preamble range
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (78 preceding siblings ...)
2026-07-30 14:06 ` [PATCH 6.18 079/675] wifi: cfg80211: validate PMSR measurement type data Greg Kroah-Hartman
@ 2026-07-30 14:06 ` Greg Kroah-Hartman
2026-07-30 14:06 ` [PATCH 6.18 081/675] wifi: cfg80211: reject unsupported PMSR FTM location requests Greg Kroah-Hartman
` (599 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:06 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Zhao Li, Johannes Berg, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Zhao Li <enderaoelyther@gmail.com>
[ Upstream commit 36230936468f0ba4930e94aef496fc229d4bb951 ]
PMSR FTM request parsing accepts preamble values outside the
enumerated nl80211 preamble range.
Reject out-of-range values before using them in the parser capability
bit test using the policy.
Fixes: 9bb7e0f24e7e7 ("cfg80211: add peer measurement with FTM initiator API")
Assisted-by: Codex:gpt-5.5
Assisted-by: Claude:claude-opus-4.8
Signed-off-by: Zhao Li <enderaoelyther@gmail.com>
Link: https://patch.msgid.link/20260612133703.93274-2-enderaoelyther@gmail.com
[drop unnecessary check]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/wireless/nl80211.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 237e5d7eeb47c3..776dcf8835d715 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -347,7 +347,9 @@ nl80211_ftm_responder_policy[NL80211_FTM_RESP_ATTR_MAX + 1] = {
static const struct nla_policy
nl80211_pmsr_ftm_req_attr_policy[NL80211_PMSR_FTM_REQ_ATTR_MAX + 1] = {
[NL80211_PMSR_FTM_REQ_ATTR_ASAP] = { .type = NLA_FLAG },
- [NL80211_PMSR_FTM_REQ_ATTR_PREAMBLE] = { .type = NLA_U32 },
+ [NL80211_PMSR_FTM_REQ_ATTR_PREAMBLE] =
+ NLA_POLICY_RANGE(NLA_U32, NL80211_PREAMBLE_LEGACY,
+ NL80211_PREAMBLE_HE),
[NL80211_PMSR_FTM_REQ_ATTR_NUM_BURSTS_EXP] =
NLA_POLICY_MAX(NLA_U8, 15),
[NL80211_PMSR_FTM_REQ_ATTR_BURST_PERIOD] = { .type = NLA_U16 },
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 081/675] wifi: cfg80211: reject unsupported PMSR FTM location requests
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (79 preceding siblings ...)
2026-07-30 14:06 ` [PATCH 6.18 080/675] wifi: cfg80211: validate PMSR FTM preamble range Greg Kroah-Hartman
@ 2026-07-30 14:06 ` Greg Kroah-Hartman
2026-07-30 14:06 ` [PATCH 6.18 082/675] wifi: mac80211: avoid non-S1G AID fallback for S1G assoc Greg Kroah-Hartman
` (598 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:06 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Zhao Li, Johannes Berg, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Zhao Li <enderaoelyther@gmail.com>
[ Upstream commit 69ef6a7ec277f16d216be8da2b3cbe872786c999 ]
PMSR FTM location request flags are syntactically valid, but they must
be rejected when the device capability does not advertise support for
them.
Return an error immediately after rejecting unsupported LCI or civic
location request bits so the request cannot reach the driver.
Fixes: 9bb7e0f24e7e7 ("cfg80211: add peer measurement with FTM initiator API")
Assisted-by: Codex:gpt-5.5
Assisted-by: Claude:claude-opus-4.8
Signed-off-by: Zhao Li <enderaoelyther@gmail.com>
Link: https://patch.msgid.link/20260612133710.93544-2-enderaoelyther@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/wireless/pmsr.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/net/wireless/pmsr.c b/net/wireless/pmsr.c
index fd14a3c2eab45b..06563f60848705 100644
--- a/net/wireless/pmsr.c
+++ b/net/wireless/pmsr.c
@@ -114,6 +114,7 @@ static int pmsr_parse_ftm(struct cfg80211_registered_device *rdev,
NL_SET_ERR_MSG_ATTR(info->extack,
tb[NL80211_PMSR_FTM_REQ_ATTR_REQUEST_LCI],
"FTM: LCI request not supported");
+ return -EOPNOTSUPP;
}
out->ftm.request_civicloc =
@@ -122,6 +123,7 @@ static int pmsr_parse_ftm(struct cfg80211_registered_device *rdev,
NL_SET_ERR_MSG_ATTR(info->extack,
tb[NL80211_PMSR_FTM_REQ_ATTR_REQUEST_CIVICLOC],
"FTM: civic location request not supported");
+ return -EOPNOTSUPP;
}
out->ftm.trigger_based =
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 082/675] wifi: mac80211: avoid non-S1G AID fallback for S1G assoc
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (80 preceding siblings ...)
2026-07-30 14:06 ` [PATCH 6.18 081/675] wifi: cfg80211: reject unsupported PMSR FTM location requests Greg Kroah-Hartman
@ 2026-07-30 14:06 ` Greg Kroah-Hartman
2026-07-30 14:06 ` [PATCH 6.18 083/675] wifi: mac80211: free AP_VLAN bc_buf SKBs outside IRQ lock Greg Kroah-Hartman
` (597 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:06 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Zhao Li, Johannes Berg, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Zhao Li <enderaoelyther@gmail.com>
[ Upstream commit 035ed430ce6a2c35b01e211844a9f0a7643e57a4 ]
When assoc_data->s1g is set and no AID Response element is present,
falling back to mgmt->u.assoc_resp.aid reads the non-S1G
association-response layout.
Keep the fallback for non-S1G only. If a successful S1G association
response omits the AID Response element, abandon the association
instead of proceeding with AID 0. Initialize aid to 0 for other S1G
responses so the later mask and logging flow keeps a defined value
without reading the non-S1G layout.
Fixes: 2a8a6b7c4cb0 ("wifi: mac80211: handle station association response with S1G")
Assisted-by: Codex:gpt-5.5
Assisted-by: Claude:claude-opus-4.8
Signed-off-by: Zhao Li <enderaoelyther@gmail.com>
Link: https://patch.msgid.link/20260612152440.25955-2-enderaoelyther@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/mac80211/mlme.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 8854e47b056721..9ec4125c06d193 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -6476,7 +6476,7 @@ static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata,
{
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data;
- u16 capab_info, status_code, aid;
+ u16 capab_info, status_code, aid = 0;
struct ieee80211_elems_parse_params parse_params = {
.bss = NULL,
.link_id = -1,
@@ -6553,8 +6553,10 @@ static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata,
if (elems->aid_resp)
aid = le16_to_cpu(elems->aid_resp->aid);
- else
+ else if (!assoc_data->s1g)
aid = le16_to_cpu(mgmt->u.assoc_resp.aid);
+ else if (status_code == WLAN_STATUS_SUCCESS)
+ goto abandon_assoc;
/*
* The 5 MSB of the AID field are reserved for a non-S1G STA. For
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 083/675] wifi: mac80211: free AP_VLAN bc_buf SKBs outside IRQ lock
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (81 preceding siblings ...)
2026-07-30 14:06 ` [PATCH 6.18 082/675] wifi: mac80211: avoid non-S1G AID fallback for S1G assoc Greg Kroah-Hartman
@ 2026-07-30 14:06 ` Greg Kroah-Hartman
2026-07-30 14:06 ` [PATCH 6.18 084/675] wifi: brcmfmac: initialize SDIO data work before cleanup Greg Kroah-Hartman
` (596 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:06 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Cen Zhang, Johannes Berg,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Cen Zhang <zzzccc427@gmail.com>
[ Upstream commit f3858d5b1432098c1936e03d6e03dd0e33facf60 ]
ieee80211_do_stop() removes AP_VLAN packets from the parent AP
ps->bc_buf while holding ps->bc_buf.lock with IRQs disabled. It then
calls ieee80211_free_txskb() before dropping the lock.
ieee80211_free_txskb() is not just a passive SKB release. For SKBs with
TX status state it can report a dropped frame through cfg80211/nl80211,
and that path can reach netlink tap transmit. This is the same reason
the pending queue cleanup in ieee80211_do_stop() already unlinks SKBs
under the queue lock and frees them after IRQ state is restored.
The buggy scenario involves two paths, with each column showing the
order within that path:
AP_VLAN management TX: AP_VLAN stop:
1. attach ACK-status state 1. clear the running state
2. queue a multicast SKB on 2. take ps->bc_buf.lock with IRQs
parent ps->bc_buf disabled
3. unlink the AP_VLAN SKB
4. call ieee80211_free_txskb()
Unlink matching AP_VLAN SKBs from ps->bc_buf under the existing lock,
but move them to a local free queue. Drop the lock and restore IRQ state
before calling ieee80211_free_txskb().
WARNING: kernel/softirq.c:430 at __local_bh_enable_ip
Fixes: 397a7a24ef8c ("mac80211: free ps->bc_buf skbs on vlan device stop")
Assisted-by: Codex:gpt-5.5
Signed-off-by: Cen Zhang <zzzccc427@gmail.com>
Link: https://patch.msgid.link/20260706140841.581566-1-zzzccc427@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/mac80211/iface.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
index 72c129478da088..499126317a914c 100644
--- a/net/mac80211/iface.c
+++ b/net/mac80211/iface.c
@@ -581,6 +581,7 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata, bool going_do
WARN_ON(!list_empty(&sdata->u.ap.vlans));
} else if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) {
/* remove all packets in parent bc_buf pointing to this dev */
+ __skb_queue_head_init(&freeq);
ps = &sdata->bss->ps;
spin_lock_irqsave(&ps->bc_buf.lock, flags);
@@ -588,10 +589,15 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata, bool going_do
if (skb->dev == sdata->dev) {
__skb_unlink(skb, &ps->bc_buf);
local->total_ps_buffered--;
- ieee80211_free_txskb(&local->hw, skb);
+ __skb_queue_tail(&freeq, skb);
}
}
spin_unlock_irqrestore(&ps->bc_buf.lock, flags);
+
+ skb_queue_walk_safe(&freeq, skb, tmp) {
+ __skb_unlink(skb, &freeq);
+ ieee80211_free_txskb(&local->hw, skb);
+ }
}
if (going_down)
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 084/675] wifi: brcmfmac: initialize SDIO data work before cleanup
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (82 preceding siblings ...)
2026-07-30 14:06 ` [PATCH 6.18 083/675] wifi: mac80211: free AP_VLAN bc_buf SKBs outside IRQ lock Greg Kroah-Hartman
@ 2026-07-30 14:06 ` Greg Kroah-Hartman
2026-07-30 14:06 ` [PATCH 6.18 085/675] wifi: cfg80211: bound element ID read when checking non-inheritance Greg Kroah-Hartman
` (595 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:06 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Runyu Xiao, Arend van Spriel,
Johannes Berg, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Runyu Xiao <runyu.xiao@seu.edu.cn>
[ Upstream commit 2a665946e0407a05a3f81bd56a08553c446498e0 ]
brcmf_sdio_probe() stores the newly allocated bus in sdiodev->bus before
allocating the ordered workqueue. If that allocation fails, the function
jumps to fail and calls brcmf_sdio_remove().
brcmf_sdio_remove() unconditionally cancels bus->datawork. Initialize the
work item before the first failure path that can reach brcmf_sdio_remove(),
so the cleanup path always observes a valid work object.
This issue was found by our static analysis tool and then confirmed by
manual review of the probe error path and the remove-time work drain. The
problem pattern is an early setup failure that reaches a cleanup helper
which cancels an embedded work item before its initializer has run.
A QEMU PoC forced alloc_ordered_workqueue() to fail at the same point in
brcmf_sdio_probe(), before INIT_WORK(&bus->datawork) is reached. The
resulting fail path calls brcmf_sdio_remove(), and DEBUG_OBJECTS reports
the invalid work drain with brcmf_sdio_probe() and brcmf_sdio_remove() in
the stack.
Fixes: 9982464379e8 ("brcmfmac: make sdio suspend wait for threads to freeze")
Signed-off-by: Runyu Xiao <runyu.xiao@seu.edu.cn>
Acked-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Link: https://patch.msgid.link/20260619064401.1048976-1-runyu.xiao@seu.edu.cn
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
index a0e88dbaaebe67..9ab62a2667c7b6 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
@@ -4465,6 +4465,7 @@ int brcmf_sdio_probe(struct brcmf_sdio_dev *sdiodev)
bus->sdiodev = sdiodev;
sdiodev->bus = bus;
skb_queue_head_init(&bus->glom);
+ INIT_WORK(&bus->datawork, brcmf_sdio_dataworker);
bus->txbound = BRCMF_TXBOUND;
bus->rxbound = BRCMF_RXBOUND;
bus->txminmax = BRCMF_TXMINMAX;
@@ -4479,7 +4480,6 @@ int brcmf_sdio_probe(struct brcmf_sdio_dev *sdiodev)
goto fail;
}
brcmf_sdiod_freezer_count(sdiodev);
- INIT_WORK(&bus->datawork, brcmf_sdio_dataworker);
bus->brcmf_wq = wq;
/* attempt to attach to the dongle */
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 085/675] wifi: cfg80211: bound element ID read when checking non-inheritance
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (83 preceding siblings ...)
2026-07-30 14:06 ` [PATCH 6.18 084/675] wifi: brcmfmac: initialize SDIO data work before cleanup Greg Kroah-Hartman
@ 2026-07-30 14:06 ` Greg Kroah-Hartman
2026-07-30 14:06 ` [PATCH 6.18 086/675] firmware: arm_ffa: Fix out-of-bound writes in ffa_setup_and_transmit() Greg Kroah-Hartman
` (594 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:06 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, HE WEI , Johannes Berg, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: HE WEI (ギカク) <skyexpoc@gmail.com>
[ Upstream commit cb8afea4655ff004fa7feee825d5c79783525383 ]
cfg80211_is_element_inherited() reads the first data octet of the
candidate element (id = elem->data[0]) to look it up in an extension
non-inheritance list. It does so after testing elem->id, but without
verifying that the element actually has a data octet. A zero-length
extension element (WLAN_EID_EXTENSION with length 0) therefore makes it
read one octet past the end of the element.
_ieee802_11_parse_elems_full() runs this check for every element of a
frame once a non-inheritance context exists -- e.g. while parsing a
per-STA profile of a Multi-Link element in a (re)association response,
or a non-transmitted BSS profile -- so a crafted frame from an AP can
trigger a one-octet slab-out-of-bounds read during element parsing:
BUG: KASAN: slab-out-of-bounds in cfg80211_is_element_inherited
Read of size 1 ... in net/wireless/scan.c
Return early (treat the element as inherited) when an extension element
carries no data, mirroring the existing handling of empty ID lists.
The bug was found by fuzzing ieee802_11_parse_elems_full() under KASAN.
Fixes: f7dacfb11475 ("cfg80211: support non-inheritance element")
Signed-off-by: HE WEI (ギカク) <skyexpoc@gmail.com>
Link: https://patch.msgid.link/20260707094828.16465-1-skyexpoc@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/wireless/scan.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/wireless/scan.c b/net/wireless/scan.c
index af1e2ce1628dae..11f7a27bb7046c 100644
--- a/net/wireless/scan.c
+++ b/net/wireless/scan.c
@@ -205,7 +205,7 @@ bool cfg80211_is_element_inherited(const struct element *elem,
return true;
if (elem->id == WLAN_EID_EXTENSION) {
- if (!ext_id_len)
+ if (!ext_id_len || !elem->datalen)
return true;
loop_len = ext_id_len;
list = &non_inherit_elem->data[3 + id_len];
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 086/675] firmware: arm_ffa: Fix out-of-bound writes in ffa_setup_and_transmit()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (84 preceding siblings ...)
2026-07-30 14:06 ` [PATCH 6.18 085/675] wifi: cfg80211: bound element ID read when checking non-inheritance Greg Kroah-Hartman
@ 2026-07-30 14:06 ` Greg Kroah-Hartman
2026-07-30 14:06 ` [PATCH 6.18 087/675] firmware: arm_ffa: Fix Endpoint Memory Access Descriptor offset calculation Greg Kroah-Hartman
` (593 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:06 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Sudeep Holla, Mostafa Saleh,
Sebastian Ene, Marc Zyngier, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Mostafa Saleh <smostafa@google.com>
[ Upstream commit 3383ffb7ef937317361713ffcc21921a7848511a ]
Sashiko (locally) reports multiple out-of-bound issues in
ffa_setup_and_transmit:
1) Writing ep_mem_access->reserved can write out of bounds for FFA
versions < 1.2 as ffa_emad_size_get() returns 16 bytes in that case
while reserved has an offset of 24.
Instead of zeroing fields, memset the struct to zero first based on
the FFA version.
2) Make sure there is enough size to write constituents.
While at it, convert the only sizeof() in the driver that uses a
type instead of variable.
Reviewed-by: Sudeep Holla <sudeep.holla@kernel.org>
Fixes: 111a833dc5cb ("firmware: arm_ffa: Set reserved/MBZ fields to zero in the memory descriptors")
Signed-off-by: Mostafa Saleh <smostafa@google.com>
Signed-off-by: Sebastian Ene <sebastianene@google.com>
Link: https://patch.msgid.link/20260702103848.1647249-2-sebastianene@google.com
Signed-off-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/firmware/arm_ffa/driver.c | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)
diff --git a/drivers/firmware/arm_ffa/driver.c b/drivers/firmware/arm_ffa/driver.c
index feded15bb5e921..6f576c39e4832a 100644
--- a/drivers/firmware/arm_ffa/driver.c
+++ b/drivers/firmware/arm_ffa/driver.c
@@ -719,11 +719,10 @@ ffa_setup_and_transmit(u32 func_id, void *buffer, u32 max_fragsize,
for (idx = 0; idx < args->nattrs; idx++) {
ep_mem_access = buffer +
ffa_mem_desc_offset(buffer, idx, drv_info->version);
+ memset(ep_mem_access, 0, ffa_emad_size_get(drv_info->version));
ep_mem_access->receiver = args->attrs[idx].receiver;
ep_mem_access->attrs = args->attrs[idx].attrs;
ep_mem_access->composite_off = composite_offset;
- ep_mem_access->flag = 0;
- ep_mem_access->reserved = 0;
ffa_emad_impdef_value_init(drv_info->version,
ep_mem_access->impdef_val,
args->attrs[idx].impdef_val);
@@ -763,7 +762,7 @@ ffa_setup_and_transmit(u32 func_id, void *buffer, u32 max_fragsize,
constituents = buffer;
}
- if ((void *)constituents - buffer > max_fragsize) {
+ if ((void *)constituents + sizeof(*constituents) - buffer > max_fragsize) {
pr_err("Memory Region Fragment > Tx Buffer size\n");
return -EFAULT;
}
@@ -772,7 +771,7 @@ ffa_setup_and_transmit(u32 func_id, void *buffer, u32 max_fragsize,
constituents->pg_cnt = args->sg->length / FFA_PAGE_SIZE;
constituents->reserved = 0;
constituents++;
- frag_len += sizeof(struct ffa_mem_region_addr_range);
+ frag_len += sizeof(*constituents);
} while ((args->sg = sg_next(args->sg)));
return ffa_transmit_fragment(func_id, addr, buf_sz, frag_len,
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 087/675] firmware: arm_ffa: Fix Endpoint Memory Access Descriptor offset calculation
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (85 preceding siblings ...)
2026-07-30 14:06 ` [PATCH 6.18 086/675] firmware: arm_ffa: Fix out-of-bound writes in ffa_setup_and_transmit() Greg Kroah-Hartman
@ 2026-07-30 14:06 ` Greg Kroah-Hartman
2026-07-30 14:06 ` [PATCH 6.18 088/675] ASoC: meson: aiu: fifo-spdif: soft reset the S/PDIF datapath on start/stop Greg Kroah-Hartman
` (592 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:06 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Sudeep Holla, Mostafa Saleh,
Sebastian Ene, Marc Zyngier, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Sebastian Ene <sebastianene@google.com>
[ Upstream commit b4d961351aa84fdf0148783fb1f3a1391b8a0adb ]
Use the descriptor's `ep_mem_offset` to calculate the start of the endpoint
memory access array and to comply with the FF-A spec instead of defaulting
to `sizeof(struct ffa_mem_region)`.
This requires moving `ffa_mem_region_additional_setup()` earlier in the setup
flow.
Also, add sanity checks to ensure the calculated descriptor offsets do not
exceed `max_fragsize`.
Fixes: 113580530ee7 ("firmware: arm_ffa: Update memory descriptor to support v1.1 format")
Reviewed-by: Sudeep Holla <sudeep.holla@kernel.org>
Signed-off-by: Mostafa Saleh <smostafa@google.com>
Signed-off-by: Sebastian Ene <sebastianene@google.com>
Link: https://patch.msgid.link/20260702103848.1647249-3-sebastianene@google.com
Signed-off-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/firmware/arm_ffa/driver.c | 20 +++++++++++++++-----
include/linux/arm_ffa.h | 2 +-
2 files changed, 16 insertions(+), 6 deletions(-)
diff --git a/drivers/firmware/arm_ffa/driver.c b/drivers/firmware/arm_ffa/driver.c
index 6f576c39e4832a..1d0bd586da4d6f 100644
--- a/drivers/firmware/arm_ffa/driver.c
+++ b/drivers/firmware/arm_ffa/driver.c
@@ -707,19 +707,30 @@ ffa_setup_and_transmit(u32 func_id, void *buffer, u32 max_fragsize,
struct ffa_composite_mem_region *composite;
struct ffa_mem_region_addr_range *constituents;
struct ffa_mem_region_attributes *ep_mem_access;
- u32 idx, frag_len, length, buf_sz = 0, num_entries = sg_nents(args->sg);
+ u32 idx, frag_len, length, buf_sz = 0, num_entries = sg_nents(args->sg), ep_offset;
+ u32 emad_end, emad_size = ffa_emad_size_get(drv_info->version);
mem_region->tag = args->tag;
mem_region->flags = args->flags;
mem_region->sender_id = drv_info->vm_id;
mem_region->attributes = ffa_memory_attributes_get(func_id);
+
+ ffa_mem_region_additional_setup(drv_info->version, mem_region);
composite_offset = ffa_mem_desc_offset(buffer, args->nattrs,
drv_info->version);
+ if (composite_offset + sizeof(*composite) > max_fragsize)
+ return -ENXIO;
for (idx = 0; idx < args->nattrs; idx++) {
- ep_mem_access = buffer +
- ffa_mem_desc_offset(buffer, idx, drv_info->version);
- memset(ep_mem_access, 0, ffa_emad_size_get(drv_info->version));
+ ep_offset = ffa_mem_desc_offset(buffer, idx, drv_info->version);
+ if (check_add_overflow(ep_offset, emad_size, &emad_end))
+ return -ENXIO;
+
+ if (emad_end > max_fragsize)
+ return -ENXIO;
+
+ ep_mem_access = buffer + ep_offset;
+ memset(ep_mem_access, 0, emad_size);
ep_mem_access->receiver = args->attrs[idx].receiver;
ep_mem_access->attrs = args->attrs[idx].attrs;
ep_mem_access->composite_off = composite_offset;
@@ -729,7 +740,6 @@ ffa_setup_and_transmit(u32 func_id, void *buffer, u32 max_fragsize,
}
mem_region->handle = 0;
mem_region->ep_count = args->nattrs;
- ffa_mem_region_additional_setup(drv_info->version, mem_region);
composite = buffer + composite_offset;
composite->total_pg_cnt = ffa_get_num_pages_sg(args->sg);
diff --git a/include/linux/arm_ffa.h b/include/linux/arm_ffa.h
index 81e603839c4a51..62d67dae8b7033 100644
--- a/include/linux/arm_ffa.h
+++ b/include/linux/arm_ffa.h
@@ -445,7 +445,7 @@ ffa_mem_desc_offset(struct ffa_mem_region *buf, int count, u32 ffa_version)
if (!FFA_MEM_REGION_HAS_EP_MEM_OFFSET(ffa_version))
offset += offsetof(struct ffa_mem_region, ep_mem_offset);
else
- offset += sizeof(struct ffa_mem_region);
+ offset += buf->ep_mem_offset;
return offset;
}
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 088/675] ASoC: meson: aiu: fifo-spdif: soft reset the S/PDIF datapath on start/stop
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (86 preceding siblings ...)
2026-07-30 14:06 ` [PATCH 6.18 087/675] firmware: arm_ffa: Fix Endpoint Memory Access Descriptor offset calculation Greg Kroah-Hartman
@ 2026-07-30 14:06 ` Greg Kroah-Hartman
2026-07-30 14:06 ` [PATCH 6.18 089/675] ASoC: amd: ps: disable MSI on resume in ACP PCI driver Greg Kroah-Hartman
` (591 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:06 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Christian Hewitt,
Martin Blumenstingl, Mark Brown, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Christian Hewitt <christianshewitt@gmail.com>
[ Upstream commit 6b59c53c8adc2b522327407af5e1793a65b67e4b ]
The I2S FIFO soft-resets its fast domain on start (AIU_RST_SOFT bit 0 +
AIU_I2S_SYNC read in aiu_fifo_i2s_trigger), mirroring the downstream
vendor driver's audio_out_i2s_enable(). The S/PDIF FIFO has no equivalent:
it only toggles the IEC958 DCU, so a stale datapath FIFO can be replayed,
producing the "machine gun noise" buffer underrun - on start when switching
outputs, and on stop when playback ends. The latter is audible on devices
with an always-on S/PDIF-fed DAC (e.g. the ES7144 on the WeTek Play2).
The vendor driver resets the IEC958 fast domain (AIU_RST_SOFT bit 2) on
both enable and disable (audio_hw_958_enable), and when reconfiguring
(audio_hw_958_reset clears AIU_958_DCU_FF_CTRL then resets). Do the same:
reset before enabling the DCU on start, and before disabling on stop.
Fixes: 6ae9ca9ce986bf ("ASoC: meson: aiu: add i2s and spdif support")
Signed-off-by: Christian Hewitt <christianshewitt@gmail.com>
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Link: https://patch.msgid.link/20260627131205.808800-1-christianshewitt@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
sound/soc/meson/aiu-fifo-spdif.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/sound/soc/meson/aiu-fifo-spdif.c b/sound/soc/meson/aiu-fifo-spdif.c
index e0e00ec026dcc4..a9861c5d663745 100644
--- a/sound/soc/meson/aiu-fifo-spdif.c
+++ b/sound/soc/meson/aiu-fifo-spdif.c
@@ -24,6 +24,7 @@
#define AIU_MEM_IEC958_CONTROL_MODE_16BIT BIT(7)
#define AIU_MEM_IEC958_CONTROL_MODE_LINEAR BIT(8)
#define AIU_MEM_IEC958_BUF_CNTL_INIT BIT(0)
+#define AIU_RST_SOFT_958_FAST BIT(2)
#define AIU_FIFO_SPDIF_BLOCK 8
@@ -68,11 +69,15 @@ static int fifo_spdif_trigger(struct snd_pcm_substream *substream, int cmd,
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_RESUME:
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+ snd_soc_component_write(component, AIU_RST_SOFT,
+ AIU_RST_SOFT_958_FAST);
fifo_spdif_dcu_enable(component, true);
break;
case SNDRV_PCM_TRIGGER_SUSPEND:
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
case SNDRV_PCM_TRIGGER_STOP:
+ snd_soc_component_write(component, AIU_RST_SOFT,
+ AIU_RST_SOFT_958_FAST);
fifo_spdif_dcu_enable(component, false);
break;
default:
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 089/675] ASoC: amd: ps: disable MSI on resume in ACP PCI driver
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (87 preceding siblings ...)
2026-07-30 14:06 ` [PATCH 6.18 088/675] ASoC: meson: aiu: fifo-spdif: soft reset the S/PDIF datapath on start/stop Greg Kroah-Hartman
@ 2026-07-30 14:06 ` Greg Kroah-Hartman
2026-07-30 14:07 ` [PATCH 6.18 090/675] ASoC: amd: ps: fix wrong ACP version string in pci_request_regions() Greg Kroah-Hartman
` (590 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:06 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Vijendar Mukunda,
Mario Limonciello (AMD), Mark Brown, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Vijendar Mukunda <Vijendar.Mukunda@amd.com>
[ Upstream commit 5893013efabb056399a01e267f410cf76eba25eb ]
BIOS/firmware may re-enable MSI in PCI config space during system
level resume even though this driver only uses legacy INTx interrupts.
If MSI is left enabled with stale address/data registers, the device
will write interrupts to a bogus address causing IOMMU IO_PAGE_FAULT
and interrupt delivery failure.
Clear the MSI Enable bit before reinitializing the ACP hardware on
system level resume.
Fixes: 491628388005 ("ASoC: amd: ps: add callback functions for acp pci driver pm ops")
Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com>
Reviewed-by: Mario Limonciello (AMD) <superm1@kernel.org>
Link: https://patch.msgid.link/20260707060130.2514138-2-Vijendar.Mukunda@amd.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
sound/soc/amd/ps/pci-ps.c | 29 +++++++++++++++++++++++++++++
1 file changed, 29 insertions(+)
diff --git a/sound/soc/amd/ps/pci-ps.c b/sound/soc/amd/ps/pci-ps.c
index c62299b2920417..34efb42be768fb 100644
--- a/sound/soc/amd/ps/pci-ps.c
+++ b/sound/soc/amd/ps/pci-ps.c
@@ -683,8 +683,37 @@ static int snd_acp_runtime_resume(struct device *dev)
return acp_hw_runtime_resume(dev);
}
+static void acp_disable_msi_on_resume(struct pci_dev *pdev)
+{
+ u16 control;
+
+ if (!pdev->msi_cap)
+ return;
+
+ pci_read_config_word(pdev, pdev->msi_cap + PCI_MSI_FLAGS, &control);
+ if (control & PCI_MSI_FLAGS_ENABLE) {
+ dev_warn(&pdev->dev,
+ "ACP: MSI unexpectedly enabled after resume (flags=0x%04x), disabling\n",
+ control);
+ control &= ~PCI_MSI_FLAGS_ENABLE;
+ pci_write_config_word(pdev, pdev->msi_cap + PCI_MSI_FLAGS, control);
+ }
+}
+
static int snd_acp_resume(struct device *dev)
{
+ struct pci_dev *pdev = to_pci_dev(dev);
+
+ /*
+ * BIOS/firmware may re-enable MSI in PCI config space during
+ * system resume even though this driver only uses legacy INTx
+ * interrupts. If MSI is left enabled with stale address/data
+ * registers, the device will write interrupts to a bogus address
+ * causing IOMMU IO_PAGE_FAULT and interrupt delivery failure.
+ * Explicitly clear the MSI Enable bit before reinitializing
+ * the ACP hardware.
+ */
+ acp_disable_msi_on_resume(pdev);
return acp_hw_resume(dev);
}
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 090/675] ASoC: amd: ps: fix wrong ACP version string in pci_request_regions()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (88 preceding siblings ...)
2026-07-30 14:06 ` [PATCH 6.18 089/675] ASoC: amd: ps: disable MSI on resume in ACP PCI driver Greg Kroah-Hartman
@ 2026-07-30 14:07 ` Greg Kroah-Hartman
2026-07-30 14:07 ` [PATCH 6.18 091/675] ASoC: amd: ps: replace bitwise OR with logical OR in IRQ return check Greg Kroah-Hartman
` (589 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:07 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Vijendar Mukunda,
Mario Limonciello (AMD), Mark Brown, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Vijendar Mukunda <Vijendar.Mukunda@amd.com>
[ Upstream commit f7697ecf6eab9d4887dd731038b3dc405c7e755e ]
The driver handles ACP6.3/7.0/7.1/7.2 platforms but the region was
claimed with the stale name "AMD ACP6.2 audio" left over from the
original ACP6.2 driver. Correct it to "AMD ACP6.3 audio".
Fixes: 95e43a170bb1 ("ASoC: amd: add Pink Sardine ACP PCI driver")
Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com>
Reviewed-by: Mario Limonciello (AMD) <superm1@kernel.org>
Link: https://patch.msgid.link/20260707060130.2514138-3-Vijendar.Mukunda@amd.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
sound/soc/amd/ps/pci-ps.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/sound/soc/amd/ps/pci-ps.c b/sound/soc/amd/ps/pci-ps.c
index 34efb42be768fb..8f37c250d4b895 100644
--- a/sound/soc/amd/ps/pci-ps.c
+++ b/sound/soc/amd/ps/pci-ps.c
@@ -595,7 +595,7 @@ static int snd_acp63_probe(struct pci_dev *pci,
return -ENODEV;
}
- ret = pci_request_regions(pci, "AMD ACP6.2 audio");
+ ret = pci_request_regions(pci, "AMD ACP6.3 audio");
if (ret < 0) {
dev_err(&pci->dev, "pci_request_regions failed\n");
goto disable_pci;
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 091/675] ASoC: amd: ps: replace bitwise OR with logical OR in IRQ return check
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (89 preceding siblings ...)
2026-07-30 14:07 ` [PATCH 6.18 090/675] ASoC: amd: ps: fix wrong ACP version string in pci_request_regions() Greg Kroah-Hartman
@ 2026-07-30 14:07 ` Greg Kroah-Hartman
2026-07-30 14:07 ` [PATCH 6.18 092/675] ASoC: cs42l43: Correct report for forced microphone jack Greg Kroah-Hartman
` (588 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:07 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Vijendar Mukunda,
Mario Limonciello (AMD), Mark Brown, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Vijendar Mukunda <Vijendar.Mukunda@amd.com>
[ Upstream commit dec5aaa27603e1d7b426ce3504af6d1a62e4d444 ]
The condition 'irq_flag | wake_irq_flag' uses bitwise OR to combine two
integer flags that are used as booleans. Replace with logical OR '||' to
correctly express the intended boolean check.
Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com>
Reviewed-by: Mario Limonciello (AMD) <superm1@kernel.org>
Fixes: 7f91f012c1df0 ("ASoC: amd: ps: fix for irq handler return status")
Link: https://patch.msgid.link/20260707060130.2514138-4-Vijendar.Mukunda@amd.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
sound/soc/amd/ps/pci-ps.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/sound/soc/amd/ps/pci-ps.c b/sound/soc/amd/ps/pci-ps.c
index 8f37c250d4b895..cf06d4ae299b51 100644
--- a/sound/soc/amd/ps/pci-ps.c
+++ b/sound/soc/amd/ps/pci-ps.c
@@ -248,7 +248,7 @@ static irqreturn_t acp63_irq_handler(int irq, void *dev_id)
if (sdw_dma_irq_flag)
return IRQ_WAKE_THREAD;
- if (irq_flag | wake_irq_flag)
+ if (irq_flag || wake_irq_flag)
return IRQ_HANDLED;
else
return IRQ_NONE;
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 092/675] ASoC: cs42l43: Correct report for forced microphone jack
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (90 preceding siblings ...)
2026-07-30 14:07 ` [PATCH 6.18 091/675] ASoC: amd: ps: replace bitwise OR with logical OR in IRQ return check Greg Kroah-Hartman
@ 2026-07-30 14:07 ` Greg Kroah-Hartman
2026-07-30 14:07 ` [PATCH 6.18 093/675] ASoC: tas2562: fix deprecated shut-down GPIO always cleared after lookup Greg Kroah-Hartman
` (587 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:07 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Charles Keepax, Mark Brown,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Charles Keepax <ckeepax@opensource.cirrus.com>
[ Upstream commit f74e6e15485b68b92b2807071e822db6309b7e38 ]
Currently if the jack is forced to the microphone mode, it will report
as line in. Correct the report to microphone.
Fixes: fc918cbe874e ("ASoC: cs42l43: Add support for the cs42l43")
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://patch.msgid.link/20260708103430.1395207-1-ckeepax@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
sound/soc/codecs/cs42l43-jack.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/sound/soc/codecs/cs42l43-jack.c b/sound/soc/codecs/cs42l43-jack.c
index ecba6c79523840..36fb67059e0652 100644
--- a/sound/soc/codecs/cs42l43-jack.c
+++ b/sound/soc/codecs/cs42l43-jack.c
@@ -310,6 +310,7 @@ irqreturn_t cs42l43_bias_detect_clamp(int irq, void *data)
#define CS42L43_JACK_ABSENT 0x0
#define CS42L43_JACK_OPTICAL (SND_JACK_MECHANICAL | SND_JACK_AVOUT)
+#define CS42L43_JACK_MICROPHONE (SND_JACK_MECHANICAL | SND_JACK_MICROPHONE)
#define CS42L43_JACK_HEADPHONE (SND_JACK_MECHANICAL | SND_JACK_HEADPHONE)
#define CS42L43_JACK_HEADSET (SND_JACK_MECHANICAL | SND_JACK_HEADSET)
#define CS42L43_JACK_LINEOUT (SND_JACK_MECHANICAL | SND_JACK_LINEOUT)
@@ -871,7 +872,7 @@ static const struct cs42l43_jack_override_mode {
.hsdet_mode = CS42L43_JACK_3_POLE_SWITCHES,
.mic_ctrl = (0x3 << CS42L43_JACK_STEREO_CONFIG_SHIFT) |
CS42L43_HS1_BIAS_EN_MASK | CS42L43_HS2_BIAS_EN_MASK,
- .report = CS42L43_JACK_LINEIN,
+ .report = CS42L43_JACK_MICROPHONE,
},
[CS42L43_JACK_RAW_OPTICAL] = {
.hsdet_mode = CS42L43_JACK_3_POLE_SWITCHES,
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 093/675] ASoC: tas2562: fix deprecated shut-down GPIO always cleared after lookup
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (91 preceding siblings ...)
2026-07-30 14:07 ` [PATCH 6.18 092/675] ASoC: cs42l43: Correct report for forced microphone jack Greg Kroah-Hartman
@ 2026-07-30 14:07 ` Greg Kroah-Hartman
2026-07-30 14:07 ` [PATCH 6.18 094/675] firmware: arm_scmi: Rate-limit queue-full warnings in IRQ context Greg Kroah-Hartman
` (586 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:07 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Uday Khare, Mark Brown, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Uday Khare <udaykhare77@gmail.com>
[ Upstream commit 3238c634725afbb2a137fdda762208510828f71d ]
In tas2562_parse_dt(), the fallback lookup for the deprecated
"shut-down" GPIO property is broken due to a missing pair of braces.
The code intends to reset sdz_gpio to NULL only when the lookup
returns an error that is not -EPROBE_DEFER (so the driver gracefully
continues without a GPIO). However, without braces the statement:
tas2562->sdz_gpio = NULL;
falls outside the IS_ERR() check and is executed unconditionally
for every path through the if block, including a successful GPIO
lookup.
This means any device using the deprecated 'shut-down' DT property
will always have sdz_gpio == NULL after probe, making the GPIO
completely non-functional.
Fix this by adding the missing braces to scope the NULL assignment
inside the IS_ERR() branch, matching the pattern already used for
the primary 'shutdown' GPIO lookup above.
Fixes: f78a97003b8b ("ASoC: tas2562: Update shutdown GPIO property")
Signed-off-by: Uday Khare <udaykhare77@gmail.com>
Link: https://patch.msgid.link/20260706153109.10953-1-udaykhare77@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
sound/soc/codecs/tas2562.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/sound/soc/codecs/tas2562.c b/sound/soc/codecs/tas2562.c
index 8e00dcc09d0c28..795c66cb47134e 100644
--- a/sound/soc/codecs/tas2562.c
+++ b/sound/soc/codecs/tas2562.c
@@ -675,11 +675,12 @@ static int tas2562_parse_dt(struct tas2562_data *tas2562)
if (tas2562->sdz_gpio == NULL) {
tas2562->sdz_gpio = devm_gpiod_get_optional(dev, "shut-down",
GPIOD_OUT_HIGH);
- if (IS_ERR(tas2562->sdz_gpio))
+ if (IS_ERR(tas2562->sdz_gpio)) {
if (PTR_ERR(tas2562->sdz_gpio) == -EPROBE_DEFER)
return -EPROBE_DEFER;
- tas2562->sdz_gpio = NULL;
+ tas2562->sdz_gpio = NULL;
+ }
}
if (tas2562->model_id == TAS2110)
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 094/675] firmware: arm_scmi: Rate-limit queue-full warnings in IRQ context
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (92 preceding siblings ...)
2026-07-30 14:07 ` [PATCH 6.18 093/675] ASoC: tas2562: fix deprecated shut-down GPIO always cleared after lookup Greg Kroah-Hartman
@ 2026-07-30 14:07 ` Greg Kroah-Hartman
2026-07-30 14:07 ` [PATCH 6.18 095/675] cpufreq: Make cpufreq_update_pressure() fall back to cpuinfo.max_freq Greg Kroah-Hartman
` (585 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:07 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Pushpendra Singh, Sudeep Holla,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Pushpendra Singh <pushpendra.singh@oss.qualcomm.com>
[ Upstream commit a4447c0693830d5ecadd6e755cb7fdc55d86aacc ]
The scmi_notify() function is called from interrupt context to queue
received notification events onto a per-protocol kfifo. When the kfifo
is full, it logs a warning via dev_warn() for every dropped event.
Under conditions where the platform sends a burst of SCMI notifications
faster than the deferred worker can drain the queue, this results in a
flood of dev_warn() calls from IRQ context. Each call acquires the
console lock and may execute blocking console writes, causing the CPU
to be held in interrupt context for an extended period and leading to
observable system stalls.
Fix this by switching to dev_warn_ratelimited() to limit the frequency
of log messages when the notification queue is full. This reduces
console overhead in interrupt context and prevents CPU stalls caused by
excessive logging, while still preserving diagnostic visibility.
Fixes: bd31b249692e ("firmware: arm_scmi: Add notification dispatch and delivery")
Signed-off-by: Pushpendra Singh <pushpendra.singh@oss.qualcomm.com>
Link: https://patch.msgid.link/20260708072339.3021140-1-pushpendra.singh@oss.qualcomm.com
Signed-off-by: Sudeep Holla <sudeep.holla@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/firmware/arm_scmi/notify.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/firmware/arm_scmi/notify.c b/drivers/firmware/arm_scmi/notify.c
index 2047edbdc5f6b1..9bf7f43ab868c8 100644
--- a/drivers/firmware/arm_scmi/notify.c
+++ b/drivers/firmware/arm_scmi/notify.c
@@ -600,9 +600,9 @@ int scmi_notify(const struct scmi_handle *handle, u8 proto_id, u8 evt_id,
return -EINVAL;
}
if (kfifo_avail(&r_evt->proto->equeue.kfifo) < sizeof(eh) + len) {
- dev_warn(handle->dev,
- "queue full, dropping proto_id:%d evt_id:%d ts:%lld\n",
- proto_id, evt_id, ktime_to_ns(ts));
+ dev_warn_ratelimited(handle->dev,
+ "queue full, dropping proto_id:%d evt_id:%d ts:%lld\n",
+ proto_id, evt_id, ktime_to_ns(ts));
return -ENOMEM;
}
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 095/675] cpufreq: Make cpufreq_update_pressure() fall back to cpuinfo.max_freq
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (93 preceding siblings ...)
2026-07-30 14:07 ` [PATCH 6.18 094/675] firmware: arm_scmi: Rate-limit queue-full warnings in IRQ context Greg Kroah-Hartman
@ 2026-07-30 14:07 ` Greg Kroah-Hartman
2026-07-30 14:07 ` [PATCH 6.18 096/675] ppp: defer channel free to an RCU grace period to fix pppol2tp RX UAF Greg Kroah-Hartman
` (584 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:07 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Rafael J. Wysocki, Viresh Kumar,
Zhongqiu Han, Vincent Guittot, Sasha Levin, Ricardo Neri
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
[ Upstream commit d2d5c129d07ea8eb91cd8a8633b5774116c4d171 ]
If arch_scale_freq_ref() is not defined for a given arch (like x86, for
example), cpufreq_update_pressure() will always set cpufreq_pressure to
zero for all CPUs in the system, which is generally problematic on
systems with asymmetric capacity [1].
However, in the absence of arch_scale_freq_ref(), it is reasonable
to assume that cpuinfo.max_freq is the maximum sustainable frequency
for the given cpufreq policy. Moreover, there are cases in which
arch_scale_freq_ref() would need to be defined to return essentially
the cpuinfo.max_freq value anyway (for example, intel_pstate on
hybrid platforms).
For the above reasons, update cpufreq_update_pressure() to fall back to
using cpuinfo.max_freq as the reference frequency if zero is returned by
arch_scale_freq_ref().
Fixes: 75d659317bb1 ("cpufreq: Add a cpufreq pressure feedback for the scheduler")
Link: https://lore.kernel.org/lkml/CAKfTPtBuRLfYNnR4w--cFZYZy-R8gaPEgVwCcaMmbCcJ2H-muQ@mail.gmail.com/ [1]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Zhongqiu Han <zhongqiu.han@oss.qualcomm.com>
Tested-by: Ricardo Neri <ricardo.neri-calderon@linux.intel.com> # cluster scheduling
Acked-by: Vincent Guittot <vincent.guittot@linaro.org>
Link: https://patch.msgid.link/5086499.GXAFRqVoOG@rafael.j.wysocki
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/cpufreq/cpufreq.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index a70df77f9b7d11..ced96d9e254ee4 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -2584,6 +2584,9 @@ static void cpufreq_update_pressure(struct cpufreq_policy *policy)
cpu = cpumask_first(policy->related_cpus);
max_freq = arch_scale_freq_ref(cpu);
+ if (!max_freq)
+ max_freq = policy->cpuinfo.max_freq;
+
capped_freq = policy->max;
/*
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 096/675] ppp: defer channel free to an RCU grace period to fix pppol2tp RX UAF
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (94 preceding siblings ...)
2026-07-30 14:07 ` [PATCH 6.18 095/675] cpufreq: Make cpufreq_update_pressure() fall back to cpuinfo.max_freq Greg Kroah-Hartman
@ 2026-07-30 14:07 ` Greg Kroah-Hartman
2026-07-30 14:07 ` [PATCH 6.18 097/675] ipv4: fib: free fib_alias with kfree_rcu() on insert error path Greg Kroah-Hartman
` (583 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:07 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Norbert Szetei, Qingfang Deng,
Paolo Abeni, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Norbert Szetei <norbert@doyensec.com>
[ Upstream commit ec4215683e47424c9c4762fd3c60f552a3119142 ]
pppol2tp_recv() runs in the L2TP UDP-encap softirq RX path:
l2tp_udp_encap_recv() -> l2tp_recv_common() -> pppol2tp_recv()
-> ppp_input(&po->chan)
It runs under rcu_read_lock() holding only an l2tp_session reference and
takes NO reference on the internal PPP channel (struct channel,
chan->ppp) that ppp_input() dereferences.
The pppox socket is SOCK_RCU_FREE, so 'po' and the embedded ppp_channel
are RCU-safe. But the internal struct channel is a separate allocation
that ppp_release_channel() frees with a plain kfree():
close(data socket) -> pppol2tp_release() -> pppox_unbind_sock()
-> ppp_unregister_channel() -> ppp_release_channel() -> kfree(pch)
For a channel that is bound (PPPIOCGCHAN) but not attached to a ppp unit
(no PPPIOCCONNECT, pch->ppp == NULL) and not bridged, teardown skips
both ppp_disconnect_channel()'s synchronize_net() and
ppp_unbridge_channels()'s synchronize_rcu(), so the kfree() has no grace
period. rcu_read_lock() in pppol2tp_recv() does not protect against a
plain kfree(), so an in-flight ppp_input() on one CPU can dereference
the channel just freed by close() on another CPU.
The bug is reachable by an unprivileged user.
Defer the channel free to an RCU callback via call_rcu() so the grace
period fences any in-flight ppp_input(). The disconnect and unbridge
teardown paths already fence with synchronize_net()/synchronize_rcu();
call_rcu() does the same here without stalling the close() path.
Fixes: ee40fb2e1eb5 ("l2tp: protect sock pointer of struct pppol2tp_session with RCU")
Assisted-by: Claude:claude-opus-4-8
Signed-off-by: Norbert Szetei <norbert@doyensec.com>
Reviewed-by: Qingfang Deng <qingfang.deng@linux.dev>
Link: https://patch.msgid.link/E793FCF2-58DE-4387-A983-C7B4BC3158BD@doyensec.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ppp/ppp_generic.c | 18 +++++++++++++++---
1 file changed, 15 insertions(+), 3 deletions(-)
diff --git a/drivers/net/ppp/ppp_generic.c b/drivers/net/ppp/ppp_generic.c
index 507d216256c0dd..72e98286fba2fe 100644
--- a/drivers/net/ppp/ppp_generic.c
+++ b/drivers/net/ppp/ppp_generic.c
@@ -185,6 +185,7 @@ struct channel {
struct list_head clist; /* link in list of channels per unit */
spinlock_t upl; /* protects `ppp' and 'bridge' */
struct channel __rcu *bridge; /* "bridged" ppp channel */
+ struct rcu_head rcu; /* for RCU-deferred free of the channel */
#ifdef CONFIG_PPP_MULTILINK
u8 avail; /* flag used in multilink stuff */
u8 had_frag; /* >= 1 fragments have been sent */
@@ -3570,6 +3571,18 @@ ppp_disconnect_channel(struct channel *pch)
return err;
}
+/* Purge after the grace period: a late ppp_input() may still queue an
+ * skb on pch->file.rq before the last RCU reader drains.
+ */
+static void ppp_release_channel_free(struct rcu_head *rcu)
+{
+ struct channel *pch = container_of(rcu, struct channel, rcu);
+
+ skb_queue_purge(&pch->file.xq);
+ skb_queue_purge(&pch->file.rq);
+ kfree(pch);
+}
+
/*
* Free up the resources used by a ppp channel.
*/
@@ -3585,9 +3598,7 @@ static void ppp_destroy_channel(struct channel *pch)
pr_err("ppp: destroying undead channel %p !\n", pch);
return;
}
- skb_queue_purge(&pch->file.xq);
- skb_queue_purge(&pch->file.rq);
- kfree(pch);
+ call_rcu(&pch->rcu, ppp_release_channel_free);
}
static void __exit ppp_cleanup(void)
@@ -3600,6 +3611,7 @@ static void __exit ppp_cleanup(void)
device_destroy(&ppp_class, MKDEV(PPP_MAJOR, 0));
class_unregister(&ppp_class);
unregister_pernet_device(&ppp_net_ops);
+ rcu_barrier(); /* wait for RCU callbacks before module unload */
}
/*
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 097/675] ipv4: fib: free fib_alias with kfree_rcu() on insert error path
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (95 preceding siblings ...)
2026-07-30 14:07 ` [PATCH 6.18 096/675] ppp: defer channel free to an RCU grace period to fix pppol2tp RX UAF Greg Kroah-Hartman
@ 2026-07-30 14:07 ` Greg Kroah-Hartman
2026-07-30 14:07 ` [PATCH 6.18 098/675] net/iucv: take a reference on the socket found in afiucv_hs_rcv() Greg Kroah-Hartman
` (582 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:07 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Xiang Mei, Weiming Shi, Ido Schimmel,
Paolo Abeni, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Weiming Shi <bestswngs@gmail.com>
[ Upstream commit f2f152e94a67bc746afaf05a1b2702c195553112 ]
fib_table_insert() publishes new_fa into the leaf's fa_list with
fib_insert_alias() before calling the fib entry notifiers. When a
notifier fails, the error path removes new_fa with fib_remove_alias()
(hlist_del_rcu) and frees it right away with kmem_cache_free().
fib_table_lookup() walks that list under rcu_read_lock() only, so a
concurrent lookup that already reached new_fa keeps reading it after the
free:
BUG: KASAN: slab-use-after-free in fib_table_lookup (net/ipv4/fib_trie.c:1601)
Read of size 1 at addr ffff88810676d4eb by task exploit/297
Call Trace:
fib_table_lookup (net/ipv4/fib_trie.c:1601)
ip_route_output_key_hash_rcu (net/ipv4/route.c:2814)
ip_route_output_key_hash (net/ipv4/route.c:2705)
__ip4_datagram_connect (net/ipv4/datagram.c:49)
udp_connect (net/ipv4/udp.c:2144)
__sys_connect (net/socket.c:2167)
__x64_sys_connect (net/socket.c:2173)
do_syscall_64
entry_SYSCALL_64_after_hwframe
which belongs to the cache ip_fib_alias of size 56
Triggering the error path needs CAP_NET_ADMIN and a registered fib
notifier that can reject a route; a netdevsim device whose IPv4 FIB
resource is exhausted is enough.
Free new_fa with alias_free_mem_rcu(), as fib_table_delete() already
does for a fib_alias removed from the trie.
Fixes: a6c76c17df02 ("ipv4: Notify route after insertion to the routing table")
Reported-by: Xiang Mei <xmei5@asu.edu>
Assisted-by: Claude:claude-opus-4-8
Signed-off-by: Weiming Shi <bestswngs@gmail.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Link: https://patch.msgid.link/20260704171421.1786806-1-bestswngs@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/ipv4/fib_trie.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/ipv4/fib_trie.c b/net/ipv4/fib_trie.c
index 1308213791f19d..2dc87e2156d373 100644
--- a/net/ipv4/fib_trie.c
+++ b/net/ipv4/fib_trie.c
@@ -1385,7 +1385,7 @@ int fib_table_insert(struct net *net, struct fib_table *tb,
out_remove_new_fa:
fib_remove_alias(t, tp, l, new_fa);
out_free_new_fa:
- kmem_cache_free(fn_alias_kmem, new_fa);
+ alias_free_mem_rcu(new_fa);
out:
fib_release_info(fi);
err:
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 098/675] net/iucv: take a reference on the socket found in afiucv_hs_rcv()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (96 preceding siblings ...)
2026-07-30 14:07 ` [PATCH 6.18 097/675] ipv4: fib: free fib_alias with kfree_rcu() on insert error path Greg Kroah-Hartman
@ 2026-07-30 14:07 ` Greg Kroah-Hartman
2026-07-30 14:07 ` [PATCH 6.18 099/675] udmabuf: Ensure to perform cache synchronisation in begin_cpu_udmabuf() Greg Kroah-Hartman
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679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:07 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Bryam Vargas, Hidayath Khan,
Paolo Abeni, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Bryam Vargas <hexlabsecurity@proton.me>
[ Upstream commit 4fa349156043dc119721d067329714179f501749 ]
afiucv_hs_rcv() looks up the destination socket under iucv_sk_list.lock,
drops the lock, and then passes the socket to the afiucv_hs_callback_*()
handlers without holding a reference. AF_IUCV sockets are not
RCU-protected and are freed synchronously by iucv_sock_kill() ->
sock_put(), so a concurrent close can free the socket in the window
between read_unlock() and the handler, which then dereferences freed
memory (for example sk->sk_data_ready() in afiucv_hs_callback_syn()).
Take a reference with sock_hold() while the socket is still on the list
and release it with sock_put() once the handler has run.
Fixes: 3881ac441f64 ("af_iucv: add HiperSockets transport")
Signed-off-by: Bryam Vargas <hexlabsecurity@proton.me>
Reviewed-by: Hidayath Khan <hidayath@linux.ibm.com>
Link: https://patch.msgid.link/20260705-b4-disp-fc79c0dc-v1-1-d2cdcb57afa9@proton.me
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/iucv/af_iucv.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/net/iucv/af_iucv.c b/net/iucv/af_iucv.c
index c66b90c912e78e..bd0405373c5e97 100644
--- a/net/iucv/af_iucv.c
+++ b/net/iucv/af_iucv.c
@@ -2089,6 +2089,8 @@ static int afiucv_hs_rcv(struct sk_buff *skb, struct net_device *dev,
}
}
}
+ if (sk)
+ sock_hold(sk);
read_unlock(&iucv_sk_list.lock);
if (!iucv)
sk = NULL;
@@ -2138,6 +2140,8 @@ static int afiucv_hs_rcv(struct sk_buff *skb, struct net_device *dev,
kfree_skb(skb);
}
+ if (sk)
+ sock_put(sk);
return err;
}
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 099/675] udmabuf: Ensure to perform cache synchronisation in begin_cpu_udmabuf()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (97 preceding siblings ...)
2026-07-30 14:07 ` [PATCH 6.18 098/675] net/iucv: take a reference on the socket found in afiucv_hs_rcv() Greg Kroah-Hartman
@ 2026-07-30 14:07 ` Greg Kroah-Hartman
2026-07-30 14:07 ` [PATCH 6.18 100/675] scsi: core: wake eh reliably when using scsi_schedule_eh Greg Kroah-Hartman
` (580 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:07 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Robert Mader, Mikhail Gavrilov,
Vivek Kasireddy, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Robert Mader <robert.mader@collabora.com>
[ Upstream commit 1d0e25c1ddf2063c499264fb2ba0fa6a3e4f8a00 ]
The message of commit 504e2b4ab97a ("dma-buf/udmabuf: skip redundant cpu sync to
fix cacheline EEXIST warning") says:
> The CPU sync at map/unmap time is also redundant for udmabuf:
> begin_cpu_udmabuf() and end_cpu_udmabuf() already perform explicit
> cache synchronization via dma_sync_sgtable_for_cpu/device() when CPU
> access is requested through the dma-buf interface.
This, however, does not apply to the first time begin_cpu_udmabuf() is
called on an udmabuf, in which case the implementation previously relied on
get_sg_table() to perform the cache synchronisation.
Ensure to call dma_sync_sgtable_for_cpu() in that case as well.
Fixes: 504e2b4ab97a ("dma-buf/udmabuf: skip redundant cpu sync to fix cacheline EEXIST warning")
Signed-off-by: Robert Mader <robert.mader@collabora.com>
Reviewed-by: Mikhail Gavrilov <mikhail.v.gavrilov@gmail.com>
Signed-off-by: Vivek Kasireddy <vivek.kasireddy@intel.com>
Link: https://patch.msgid.link/20260627105725.9083-1-robert.mader@collabora.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/dma-buf/udmabuf.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)
diff --git a/drivers/dma-buf/udmabuf.c b/drivers/dma-buf/udmabuf.c
index be47d1ff6c508b..30b0f0c72e928c 100644
--- a/drivers/dma-buf/udmabuf.c
+++ b/drivers/dma-buf/udmabuf.c
@@ -249,21 +249,22 @@ static int begin_cpu_udmabuf(struct dma_buf *buf,
{
struct udmabuf *ubuf = buf->priv;
struct device *dev = ubuf->device->this_device;
- int ret = 0;
if (!ubuf->sg) {
ubuf->sg = get_sg_table(dev, buf, direction);
if (IS_ERR(ubuf->sg)) {
+ int ret;
+
ret = PTR_ERR(ubuf->sg);
ubuf->sg = NULL;
+ return ret;
} else {
ubuf->sg_dir = direction;
}
- } else {
- dma_sync_sgtable_for_cpu(dev, ubuf->sg, direction);
}
- return ret;
+ dma_sync_sgtable_for_cpu(dev, ubuf->sg, direction);
+ return 0;
}
static int end_cpu_udmabuf(struct dma_buf *buf,
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 100/675] scsi: core: wake eh reliably when using scsi_schedule_eh
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (98 preceding siblings ...)
2026-07-30 14:07 ` [PATCH 6.18 099/675] udmabuf: Ensure to perform cache synchronisation in begin_cpu_udmabuf() Greg Kroah-Hartman
@ 2026-07-30 14:07 ` Greg Kroah-Hartman
2026-07-30 14:07 ` [PATCH 6.18 101/675] ata: sata_dwc_460ex: enable SATA interrupts only after IRQ handler is registered Greg Kroah-Hartman
` (579 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:07 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, David Jeffery, Martin K. Petersen,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: David Jeffery <djeffery@redhat.com>
[ Upstream commit dccf3b1798b70f94e958b3d00b83010399e6fb05 ]
Drivers which use the scsi_schedule_eh function to run the error handler
currently risk the error handler thread never waking once all commands are
timed out or inactive. There is no enforced memory order between setting
the host into error recovery state and counting busy commands. This can
result in a race with scsi_dec_host_busy where neither CPU sees both
conditions of all commands inactive and the host error state to request
waking the error handler.
To fix this, run the scsi_schedule_eh's scsi_eh_wakeup from a new work item
which will use rcu to ensure scsi_schedule_eh's call to scsi_host_busy will
occur after the error state is globally visible and will be seen by any
current scsi_dec_host_busy callers.
Fixes: 6eb045e092ef ("scsi: core: avoid host-wide host_busy counter for scsi_mq")
Signed-off-by: David Jeffery <djeffery@redhat.com>
Link: https://patch.msgid.link/20260615174630.11492-1-djeffery@redhat.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/scsi/hosts.c | 2 ++
drivers/scsi/scsi_error.c | 22 +++++++++++++++++++++-
drivers/scsi/scsi_priv.h | 1 +
include/scsi/scsi_host.h | 3 +++
4 files changed, 27 insertions(+), 1 deletion(-)
diff --git a/drivers/scsi/hosts.c b/drivers/scsi/hosts.c
index 17173239301e61..a1055fe4922f64 100644
--- a/drivers/scsi/hosts.c
+++ b/drivers/scsi/hosts.c
@@ -343,6 +343,7 @@ static void scsi_host_dev_release(struct device *dev)
/* Wait for functions invoked through call_rcu(&scmd->rcu, ...) */
rcu_barrier();
+ cancel_work_sync(&shost->eh_work);
if (shost->tmf_work_q)
destroy_workqueue(shost->tmf_work_q);
if (shost->ehandler)
@@ -408,6 +409,7 @@ struct Scsi_Host *scsi_host_alloc(const struct scsi_host_template *sht, int priv
INIT_LIST_HEAD(&shost->starved_list);
init_waitqueue_head(&shost->host_wait);
mutex_init(&shost->scan_mutex);
+ INIT_WORK(&shost->eh_work, scsi_rcu_eh_wakeup);
index = ida_alloc(&host_index_ida, GFP_KERNEL);
if (index < 0) {
diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c
index 2fd4ca96b3089d..13d46b6e0359e2 100644
--- a/drivers/scsi/scsi_error.c
+++ b/drivers/scsi/scsi_error.c
@@ -73,6 +73,26 @@ void scsi_eh_wakeup(struct Scsi_Host *shost, unsigned int busy)
}
}
+void scsi_rcu_eh_wakeup(struct work_struct *work)
+{
+ struct Scsi_Host *shost = container_of(work, struct Scsi_Host, eh_work);
+ unsigned long flags;
+ unsigned int busy;
+
+ /*
+ * Ensure any running scsi_dec_host_busy has completed its rcu section
+ * so changes to host state and host_eh_scheduled are visible to all
+ * future calls of scsi_dec_host_busy
+ */
+ synchronize_rcu();
+
+ busy = scsi_host_busy(shost);
+
+ spin_lock_irqsave(shost->host_lock, flags);
+ scsi_eh_wakeup(shost, busy);
+ spin_unlock_irqrestore(shost->host_lock, flags);
+}
+
/**
* scsi_schedule_eh - schedule EH for SCSI host
* @shost: SCSI host to invoke error handling on.
@@ -88,7 +108,7 @@ void scsi_schedule_eh(struct Scsi_Host *shost)
if (scsi_host_set_state(shost, SHOST_RECOVERY) == 0 ||
scsi_host_set_state(shost, SHOST_CANCEL_RECOVERY) == 0) {
shost->host_eh_scheduled++;
- scsi_eh_wakeup(shost, scsi_host_busy(shost));
+ queue_work(shost->tmf_work_q, &shost->eh_work);
}
spin_unlock_irqrestore(shost->host_lock, flags);
diff --git a/drivers/scsi/scsi_priv.h b/drivers/scsi/scsi_priv.h
index 5b2b19f5e8ec8a..68866b18a60058 100644
--- a/drivers/scsi/scsi_priv.h
+++ b/drivers/scsi/scsi_priv.h
@@ -91,6 +91,7 @@ extern enum blk_eh_timer_return scsi_timeout(struct request *req);
extern int scsi_error_handler(void *host);
extern enum scsi_disposition scsi_decide_disposition(struct scsi_cmnd *cmd);
extern void scsi_eh_wakeup(struct Scsi_Host *shost, unsigned int busy);
+extern void scsi_rcu_eh_wakeup(struct work_struct *work);
extern void scsi_eh_scmd_add(struct scsi_cmnd *);
void scsi_eh_ready_devs(struct Scsi_Host *shost,
struct list_head *work_q,
diff --git a/include/scsi/scsi_host.h b/include/scsi/scsi_host.h
index f5a24326123605..936403c15e53d3 100644
--- a/include/scsi/scsi_host.h
+++ b/include/scsi/scsi_host.h
@@ -714,6 +714,9 @@ struct Scsi_Host {
*/
struct device *dma_dev;
+ /* Used for an rcu-synchronizing eh wakeup */
+ struct work_struct eh_work;
+
/* Delay for runtime autosuspend */
int rpm_autosuspend_delay;
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 101/675] ata: sata_dwc_460ex: enable SATA interrupts only after IRQ handler is registered
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (99 preceding siblings ...)
2026-07-30 14:07 ` [PATCH 6.18 100/675] scsi: core: wake eh reliably when using scsi_schedule_eh Greg Kroah-Hartman
@ 2026-07-30 14:07 ` Greg Kroah-Hartman
2026-07-30 14:07 ` [PATCH 6.18 102/675] ata: sata_dwc_460ex: use platform_get_irq() Greg Kroah-Hartman
` (578 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:07 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Rosen Penev, Damien Le Moal,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Rosen Penev <rosenp@gmail.com>
[ Upstream commit 4bbc16a353a98023e5ddfca7c1fc0e49971cf4d0 ]
sata_dwc_enable_interrupts() is called before platform_get_irq() and
ata_host_activate(), leaving the SATA controller's interrupt mask
enabled without a registered handler. If a later step fails (irq
request, phy init, etc.) or if the controller asserts an interrupt
during probe, the irq line may fire with no handler, causing a
spurious interrupt storm.
Move sata_dwc_enable_interrupts() after ata_host_activate() so that
interrupts are only unmasked once the handler is registered and the
core is fully initialized.
Fixes: 62936009f35a ("[libata] Add 460EX on-chip SATA driver, sata_dwc_460ex")
Assisted-by: opencode:big-pickle
Signed-off-by: Rosen Penev <rosenp@gmail.com>
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/ata/sata_dwc_460ex.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/drivers/ata/sata_dwc_460ex.c b/drivers/ata/sata_dwc_460ex.c
index 7a4f59202156ec..4029e082577fe1 100644
--- a/drivers/ata/sata_dwc_460ex.c
+++ b/drivers/ata/sata_dwc_460ex.c
@@ -1168,9 +1168,6 @@ static int sata_dwc_probe(struct platform_device *ofdev)
/* Save dev for later use in dev_xxx() routines */
hsdev->dev = dev;
- /* Enable SATA Interrupts */
- sata_dwc_enable_interrupts(hsdev);
-
/* Get SATA interrupt number */
irq = irq_of_parse_and_map(np, 0);
if (!irq) {
@@ -1203,6 +1200,8 @@ static int sata_dwc_probe(struct platform_device *ofdev)
if (err)
dev_err(dev, "failed to activate host");
+ /* Enable SATA Interrupts */
+ sata_dwc_enable_interrupts(hsdev);
return 0;
error_out:
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 102/675] ata: sata_dwc_460ex: use platform_get_irq()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (100 preceding siblings ...)
2026-07-30 14:07 ` [PATCH 6.18 101/675] ata: sata_dwc_460ex: enable SATA interrupts only after IRQ handler is registered Greg Kroah-Hartman
@ 2026-07-30 14:07 ` Greg Kroah-Hartman
2026-07-30 14:07 ` [PATCH 6.18 103/675] ata: sata_dwc_460ex: fix clear_interrupt_bit() clearing all pending interrupts Greg Kroah-Hartman
` (577 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:07 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Rosen Penev, Damien Le Moal,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Rosen Penev <rosenp@gmail.com>
[ Upstream commit a4af122106f73ea510bb35a9ea1dedd980fc0db7 ]
Replace irq_of_parse_and_map() with platform_get_irq() in both
sata_dwc_dma_init_old() and sata_dwc_probe(). This is the preferred
way to obtain IRQs for platform devices and provides better error
reporting. Remove the now-unnecessary #include <linux/of_irq.h>.
irq_of_parse_and_map() requires irq_dispose_mapping(), which is missing.
Also fix unused variable when CONFIG_SATA_DWC_OLD_DMA is disabled.
Fixes: 62936009f35a ("[libata] Add 460EX on-chip SATA driver, sata_dwc_460ex")
Assisted-by: opencode:big-pickle
Signed-off-by: Rosen Penev <rosenp@gmail.com>
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/ata/sata_dwc_460ex.c | 21 +++++++--------------
1 file changed, 7 insertions(+), 14 deletions(-)
diff --git a/drivers/ata/sata_dwc_460ex.c b/drivers/ata/sata_dwc_460ex.c
index 4029e082577fe1..639eab75210f29 100644
--- a/drivers/ata/sata_dwc_460ex.c
+++ b/drivers/ata/sata_dwc_460ex.c
@@ -19,7 +19,6 @@
#include <linux/device.h>
#include <linux/dmaengine.h>
#include <linux/of.h>
-#include <linux/of_irq.h>
#include <linux/platform_device.h>
#include <linux/phy/phy.h>
#include <linux/libata.h>
@@ -226,7 +225,6 @@ static int sata_dwc_dma_init_old(struct platform_device *pdev,
struct sata_dwc_device *hsdev)
{
struct device *dev = &pdev->dev;
- struct device_node *np = dev->of_node;
hsdev->dma = devm_kzalloc(dev, sizeof(*hsdev->dma), GFP_KERNEL);
if (!hsdev->dma)
@@ -236,11 +234,9 @@ static int sata_dwc_dma_init_old(struct platform_device *pdev,
hsdev->dma->id = pdev->id;
/* Get SATA DMA interrupt number */
- hsdev->dma->irq = irq_of_parse_and_map(np, 1);
- if (!hsdev->dma->irq) {
- dev_err(dev, "no SATA DMA irq\n");
- return -ENODEV;
- }
+ hsdev->dma->irq = platform_get_irq(pdev, 1);
+ if (hsdev->dma->irq < 0)
+ return hsdev->dma->irq;
/* Get physical SATA DMA register base address */
hsdev->dma->regs = devm_platform_ioremap_resource(pdev, 1);
@@ -1125,7 +1121,6 @@ static const struct ata_port_info sata_dwc_port_info[] = {
static int sata_dwc_probe(struct platform_device *ofdev)
{
struct device *dev = &ofdev->dev;
- struct device_node *np = dev->of_node;
struct sata_dwc_device *hsdev;
u32 idr, versionr;
char *ver = (char *)&versionr;
@@ -1169,14 +1164,12 @@ static int sata_dwc_probe(struct platform_device *ofdev)
hsdev->dev = dev;
/* Get SATA interrupt number */
- irq = irq_of_parse_and_map(np, 0);
- if (!irq) {
- dev_err(dev, "no SATA DMA irq\n");
- return -ENODEV;
- }
+ irq = platform_get_irq(ofdev, 0);
+ if (irq < 0)
+ return irq;
#ifdef CONFIG_SATA_DWC_OLD_DMA
- if (!of_property_present(np, "dmas")) {
+ if (!of_property_present(dev->of_node, "dmas")) {
err = sata_dwc_dma_init_old(ofdev, hsdev);
if (err)
return err;
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 103/675] ata: sata_dwc_460ex: fix clear_interrupt_bit() clearing all pending interrupts
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (101 preceding siblings ...)
2026-07-30 14:07 ` [PATCH 6.18 102/675] ata: sata_dwc_460ex: use platform_get_irq() Greg Kroah-Hartman
@ 2026-07-30 14:07 ` Greg Kroah-Hartman
2026-07-30 14:07 ` [PATCH 6.18 104/675] ata: sata_dwc_460ex: fix infinite loop in NCQ tag completion bit-scanning Greg Kroah-Hartman
` (576 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:07 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Rosen Penev, Damien Le Moal,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Rosen Penev <rosenp@gmail.com>
[ Upstream commit 66c4e310ad71f41e41736d33dd8a1fb5eaaec7f3 ]
clear_interrupt_bit() ignores the bit argument and performs a
read-write-back of the entire INTPR register. If INTPR uses standard
Write-1-to-Clear semantics, this clears every pending interrupt bit,
not just the intended one. Coalesced interrupts (e.g. DMAT + NEWFP)
would be cleared together, silently losing the second event.
Write only the specific bit to clear so that other pending interrupts
are preserved.
Fixes: 62936009f35a ("[libata] Add 460EX on-chip SATA driver, sata_dwc_460ex")
Assisted-by: opencode:big-pickle
Signed-off-by: Rosen Penev <rosenp@gmail.com>
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/ata/sata_dwc_460ex.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/ata/sata_dwc_460ex.c b/drivers/ata/sata_dwc_460ex.c
index 639eab75210f29..d3472bfc606ffc 100644
--- a/drivers/ata/sata_dwc_460ex.c
+++ b/drivers/ata/sata_dwc_460ex.c
@@ -394,8 +394,7 @@ static void clear_serror(struct ata_port *ap)
static void clear_interrupt_bit(struct sata_dwc_device *hsdev, u32 bit)
{
- sata_dwc_writel(&hsdev->sata_dwc_regs->intpr,
- sata_dwc_readl(&hsdev->sata_dwc_regs->intpr));
+ sata_dwc_writel(&hsdev->sata_dwc_regs->intpr, bit);
}
static u32 qcmd_tag_to_mask(u8 tag)
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 104/675] ata: sata_dwc_460ex: fix infinite loop in NCQ tag completion bit-scanning
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (102 preceding siblings ...)
2026-07-30 14:07 ` [PATCH 6.18 103/675] ata: sata_dwc_460ex: fix clear_interrupt_bit() clearing all pending interrupts Greg Kroah-Hartman
@ 2026-07-30 14:07 ` Greg Kroah-Hartman
2026-07-30 14:07 ` [PATCH 6.18 105/675] accel/ivpu: Fix wrong register read in LNL failure diagnostics Greg Kroah-Hartman
` (575 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:07 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Rosen Penev, Damien Le Moal,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Rosen Penev <rosenp@gmail.com>
[ Upstream commit c2130f6553f4a5cbdc259de069600117a995f197 ]
The hand-rolled bit-scanning loop in the NCQ completion path has an
infinite loop bug. When tag_mask has only high bits set (e.g.
0x80000000), the inner while loop left-shifts tag_mask until it
overflows to 0. At that point !(0 & 1) is always true and 0 <<= 1
stays 0, causing an infinite loop in hardirq context with a spinlock
held.
Replace the open-coded bit-scanning with __ffs() which correctly
finds the least significant set bit and is bounded by the width of
the argument.
Fixes: 62936009f35a ("[libata] Add 460EX on-chip SATA driver, sata_dwc_460ex")
Assisted-by: opencode:big-pickle
Signed-off-by: Rosen Penev <rosenp@gmail.com>
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/ata/sata_dwc_460ex.c | 9 ++-------
1 file changed, 2 insertions(+), 7 deletions(-)
diff --git a/drivers/ata/sata_dwc_460ex.c b/drivers/ata/sata_dwc_460ex.c
index d3472bfc606ffc..36cc28b8986509 100644
--- a/drivers/ata/sata_dwc_460ex.c
+++ b/drivers/ata/sata_dwc_460ex.c
@@ -607,14 +607,9 @@ static irqreturn_t sata_dwc_isr(int irq, void *dev_instance)
status = ap->ops->sff_check_status(ap);
dev_dbg(ap->dev, "%s ATA status register=0x%x\n", __func__, status);
- tag = 0;
while (tag_mask) {
- while (!(tag_mask & 0x00000001)) {
- tag++;
- tag_mask <<= 1;
- }
-
- tag_mask &= (~0x00000001);
+ tag = __ffs(tag_mask);
+ tag_mask &= ~(1U << tag);
qc = ata_qc_from_tag(ap, tag);
if (unlikely(!qc)) {
dev_err(ap->dev, "failed to get qc");
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 105/675] accel/ivpu: Fix wrong register read in LNL failure diagnostics
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (103 preceding siblings ...)
2026-07-30 14:07 ` [PATCH 6.18 104/675] ata: sata_dwc_460ex: fix infinite loop in NCQ tag completion bit-scanning Greg Kroah-Hartman
@ 2026-07-30 14:07 ` Greg Kroah-Hartman
2026-07-30 14:07 ` [PATCH 6.18 106/675] ALSA: usb-audio: Skip DSD quirk for Musical Fidelity M6s DAC Greg Kroah-Hartman
` (574 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:07 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Andrzej Kacprowski, Karol Wachowski,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Karol Wachowski <karol.wachowski@linux.intel.com>
[ Upstream commit e4159045c2704dfe146f0ccb0445d9d074cd6882 ]
diagnose_failure_lnl() read VPU_HW_BTRS_MTL_INTERRUPT_STAT instead of
VPU_HW_BTRS_LNL_INTERRUPT_STAT, which on LNL and newer parts is a
different register with a different bit layout, so failure diagnostics
decoded the wrong register and reported a bogus error cause.
Read the LNL interrupt status register instead.
Fixes: 8a27ad81f7d3 ("accel/ivpu: Split IP and buttress code")
Reviewed-by: Andrzej Kacprowski <andrzej.kacprowski@linux.intel.com>
Signed-off-by: Karol Wachowski <karol.wachowski@linux.intel.com>
Link: https://patch.msgid.link/20260710101331.1899505-1-karol.wachowski@linux.intel.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/accel/ivpu/ivpu_hw_btrs.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/accel/ivpu/ivpu_hw_btrs.c b/drivers/accel/ivpu/ivpu_hw_btrs.c
index aa33f562d29c12..e9786204feca43 100644
--- a/drivers/accel/ivpu/ivpu_hw_btrs.c
+++ b/drivers/accel/ivpu/ivpu_hw_btrs.c
@@ -845,7 +845,7 @@ static void diagnose_failure_mtl(struct ivpu_device *vdev)
static void diagnose_failure_lnl(struct ivpu_device *vdev)
{
- u32 reg = REGB_RD32(VPU_HW_BTRS_MTL_INTERRUPT_STAT) & BTRS_LNL_IRQ_MASK;
+ u32 reg = REGB_RD32(VPU_HW_BTRS_LNL_INTERRUPT_STAT) & BTRS_LNL_IRQ_MASK;
if (REG_TEST_FLD(VPU_HW_BTRS_LNL_INTERRUPT_STAT, ATS_ERR, reg)) {
ivpu_err(vdev, "ATS_ERR_LOG1 0x%08x ATS_ERR_LOG2 0x%08x\n",
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 106/675] ALSA: usb-audio: Skip DSD quirk for Musical Fidelity M6s DAC
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (104 preceding siblings ...)
2026-07-30 14:07 ` [PATCH 6.18 105/675] accel/ivpu: Fix wrong register read in LNL failure diagnostics Greg Kroah-Hartman
@ 2026-07-30 14:07 ` Greg Kroah-Hartman
2026-07-30 14:07 ` [PATCH 6.18 107/675] Bluetooth: qca: fix NVM tag length underflow in TLV parser Greg Kroah-Hartman
` (573 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:07 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Salvador Blaya, Takashi Iwai,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Takashi Iwai <tiwai@suse.de>
[ Upstream commit 93b47e66cc6d6c6382d44b44f5e7f6fc3a7b38c3 ]
Salvador reported that the recent fix for applying the DSD quirk to
Musical Fidelity devices broke for his M6s DAC model (2772:0502).
Although this is basically a firmware bug, the model in question is
fairly old, and no further firmware update can be expected, so it'd be
better to address in the driver side.
As an ad hoc workaround, skip the DSD quirk for this device by adding
an empty quirk entry of 2772:0502; this essentially skips the later
DSD quirk entry by the match with the vendor 2772.
Fixes: da3a7efff64e ("ALSA: usb-audio: Update for native DSD support quirks")
Reported-by: Salvador Blaya <tiniebla6@gmail.com>
Closes: https://lore.kernel.org/CAOdyq+qFaqCh=tK_wNnA64hv5pQuA1Y09ANxQ=xK8yR-t4mf9Q@mail.gmail.com
Tested-by: Salvador Blaya <tiniebla6@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://patch.msgid.link/20260709095614.1418838-1-tiwai@suse.de
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
sound/usb/quirks.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
index 1b4cfc2b68f9dc..3d81b003a5109b 100644
--- a/sound/usb/quirks.c
+++ b/sound/usb/quirks.c
@@ -2380,6 +2380,8 @@ static const struct usb_audio_quirk_flags_table quirk_flags_table[] = {
QUIRK_FLAG_DSD_RAW),
DEVICE_FLG(0x2708, 0x0002, /* Audient iD14 */
QUIRK_FLAG_IGNORE_CTL_ERROR),
+ DEVICE_FLG(0x2772, 0x0502, /* Musical Fidelity M6s DAC */
+ 0), /* for avoiding QUIRK_FLAG_DSD_RAW with vendor match */
DEVICE_FLG(0x2912, 0x30c8, /* Audioengine D1 */
QUIRK_FLAG_GET_SAMPLE_RATE),
DEVICE_FLG(0x2a70, 0x1881, /* OnePlus Technology (Shenzhen) Co., Ltd. BE02T */
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 107/675] Bluetooth: qca: fix NVM tag length underflow in TLV parser
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (105 preceding siblings ...)
2026-07-30 14:07 ` [PATCH 6.18 106/675] ALSA: usb-audio: Skip DSD quirk for Musical Fidelity M6s DAC Greg Kroah-Hartman
@ 2026-07-30 14:07 ` Greg Kroah-Hartman
2026-07-30 14:07 ` [PATCH 6.18 108/675] Bluetooth: MGMT: revalidate LOAD_CONN_PARAM queued update Greg Kroah-Hartman
` (572 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:07 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Weiming Shi, Xiang Mei, Johan Hovold,
Bartosz Golaszewski, Luiz Augusto von Dentz, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Xiang Mei <xmei5@asu.edu>
[ Upstream commit c90164ca0f7036942ba088eb7ea8d3f6c2352020 ]
In the TLV_TYPE_NVM branch of qca_tlv_check_data() the tag loop bound is
"while (idx < length - sizeof(struct tlv_type_nvm))". "length" is a signed
int from the firmware TLV header and sizeof(struct tlv_type_nvm) is a
size_t (12), so "length" is converted to size_t and any firmware-supplied
"length" < 12 makes the subtraction wrap to a huge value. The loop body
then reads a 12-byte struct tlv_type_nvm past the end of the short
vmalloc'd firmware buffer (and the EDL_TAG_ID_* handlers can write past it).
Rewrite the bound as "idx + sizeof(struct tlv_type_nvm) <= length"; both
operands are non-negative, so it no longer underflows and a "length" too
small for one record correctly skips the loop.
BUG: KASAN: vmalloc-out-of-bounds in qca_download_firmware.isra.0 (drivers/bluetooth/btqca.c:421)
Read of size 2 at addr ffffc900000e5004 by task kworker/u9:0/52
Workqueue: hci0 hci_power_on
Call Trace:
...
kasan_report (mm/kasan/report.c:595)
qca_download_firmware.isra.0 (drivers/bluetooth/btqca.c:421 drivers/bluetooth/btqca.c:617)
qca_uart_setup (drivers/bluetooth/btqca.c:948)
qca_setup (drivers/bluetooth/hci_qca.c:2029)
hci_uart_setup (drivers/bluetooth/hci_ldisc.c:438)
hci_dev_open_sync (net/bluetooth/hci_sync.c:5227)
hci_power_on (net/bluetooth/hci_core.c:920)
process_one_work (kernel/workqueue.c:3322)
worker_thread (kernel/workqueue.c:3486)
kthread (kernel/kthread.c:436)
ret_from_fork (arch/x86/kernel/process.c:158)
ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
Fixes: 2e4edfa1e2bd ("Bluetooth: qca: add missing firmware sanity checks")
Reported-by: Weiming Shi <bestswngs@gmail.com>
Assisted-by: Claude:claude-opus-4-8
Signed-off-by: Xiang Mei <xmei5@asu.edu>
Reported-by: Weiming Shi <bestswngs@gmail.com>
Reviewed-by: Johan Hovold <johan@kernel.org>
Acked-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/bluetooth/btqca.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/bluetooth/btqca.c b/drivers/bluetooth/btqca.c
index 86a48d009d1ba2..afab479ac89448 100644
--- a/drivers/bluetooth/btqca.c
+++ b/drivers/bluetooth/btqca.c
@@ -413,7 +413,7 @@ static int qca_tlv_check_data(struct hci_dev *hdev,
idx = 0;
data = tlv->data;
- while (idx < length - sizeof(struct tlv_type_nvm)) {
+ while (idx + sizeof(struct tlv_type_nvm) <= length) {
tlv_nvm = (struct tlv_type_nvm *)(data + idx);
tag_id = le16_to_cpu(tlv_nvm->tag_id);
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 108/675] Bluetooth: MGMT: revalidate LOAD_CONN_PARAM queued update
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (106 preceding siblings ...)
2026-07-30 14:07 ` [PATCH 6.18 107/675] Bluetooth: qca: fix NVM tag length underflow in TLV parser Greg Kroah-Hartman
@ 2026-07-30 14:07 ` Greg Kroah-Hartman
2026-07-30 14:07 ` [PATCH 6.18 109/675] Bluetooth: hci_sync: extend conn_hash lookup critical sections Greg Kroah-Hartman
` (571 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:07 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Luiz Augusto von Dentz, Cen Zhang,
Luiz Augusto von Dentz, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Cen Zhang <zzzccc427@gmail.com>
[ Upstream commit 2bf282f8f715f5d05d6f4c49ffb3bd241c5e667e ]
MGMT_OP_LOAD_CONN_PARAM queues conn_update_sync() when a single parameter
update changes an existing LE central connection. The queued work currently
stores a borrowed hci_conn_params entry from hdev->le_conn_params. A later
LOAD_CONN_PARAM request can clear disabled parameters and free that entry
before hci_cmd_sync_work() runs the queued callback.
Do not keep the borrowed hci_conn_params pointer in queued work. Queue the
hci_conn instead and hold a reference until the queued callback completes.
When the work runs, revalidate that the connection is still present, look
up the current hci_conn_params entry, and cancel the update if userspace
removed that entry while the work was pending.
Copy the interval values from the current params entry under hdev->lock,
then drop the lock and keep using hci_le_conn_update_sync() to issue the
update.
Validation reproduced this kernel report:
BUG: KASAN: slab-use-after-free in conn_update_sync+0x2a/0xf0 [bluetooth]
Read of size 1 at addr ffff88810c697126 by task kworker/u17:0/377
Workqueue: hci0 hci_cmd_sync_work [bluetooth]
Call Trace:
<TASK>
dump_stack_lvl+0x66/0xa0
print_report+0xce/0x5f0
kasan_report+0xe0/0x110
conn_update_sync+0x2a/0xf0 [bluetooth]
hci_cmd_sync_work+0x187/0x210 [bluetooth]
process_one_work+0x4fd/0xbc0
worker_thread+0x2d8/0x570
kthread+0x1ad/0x1f0
ret_from_fork+0x3c9/0x540
ret_from_fork_asm+0x1a/0x30
Allocated by task 466:
hci_conn_params_add+0xa6/0x240 [bluetooth]
load_conn_param+0x4e1/0x850 [bluetooth]
hci_sock_sendmsg+0x96b/0xf80 [bluetooth]
Freed by task 474:
kfree+0x313/0x590
hci_conn_params_clear_disabled+0x9b/0xc0 [bluetooth]
load_conn_param+0x4bf/0x850 [bluetooth]
hci_sock_sendmsg+0x96b/0xf80 [bluetooth]
Fixes: 0ece498c27d8c ("Bluetooth: MGMT: Make MGMT_OP_LOAD_CONN_PARAM update existing connection")
Suggested-by: Luiz Augusto von Dentz <luiz.dentz@gmail.com>
Assisted-by: Codex:gpt-5.5
Signed-off-by: Cen Zhang <zzzccc427@gmail.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/bluetooth/mgmt.c | 44 +++++++++++++++++++++++++++++++++++---------
1 file changed, 35 insertions(+), 9 deletions(-)
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index 410910f64c1c49..4c8b172e85d006 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -7924,14 +7924,36 @@ static int remove_device(struct sock *sk, struct hci_dev *hdev,
static int conn_update_sync(struct hci_dev *hdev, void *data)
{
- struct hci_conn_params *params = data;
- struct hci_conn *conn;
+ struct hci_conn *conn = data;
+ struct hci_conn_params *params;
+ struct hci_conn_params local = {};
- conn = hci_conn_hash_lookup_le(hdev, ¶ms->addr, params->addr_type);
- if (!conn)
- return -ECANCELED;
+ hci_dev_lock(hdev);
+
+ if (!hci_conn_valid(hdev, conn) || conn->role != HCI_ROLE_MASTER)
+ goto cancel;
+
+ params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type);
+ if (!params)
+ goto cancel;
+
+ local.conn_min_interval = params->conn_min_interval;
+ local.conn_max_interval = params->conn_max_interval;
+ local.conn_latency = params->conn_latency;
+ local.supervision_timeout = params->supervision_timeout;
- return hci_le_conn_update_sync(hdev, conn, params);
+ hci_dev_unlock(hdev);
+
+ return hci_le_conn_update_sync(hdev, conn, &local);
+
+cancel:
+ hci_dev_unlock(hdev);
+ return -ECANCELED;
+}
+
+static void conn_update_sync_destroy(struct hci_dev *hdev, void *data, int err)
+{
+ hci_conn_put(data);
}
static int load_conn_param(struct sock *sk, struct hci_dev *hdev, void *data,
@@ -8041,9 +8063,13 @@ static int load_conn_param(struct sock *sk, struct hci_dev *hdev, void *data,
(conn->le_conn_min_interval != min ||
conn->le_conn_max_interval != max ||
conn->le_conn_latency != latency ||
- conn->le_supv_timeout != timeout))
- hci_cmd_sync_queue(hdev, conn_update_sync,
- hci_param, NULL);
+ conn->le_supv_timeout != timeout)) {
+ hci_conn_get(conn);
+ if (hci_cmd_sync_queue(hdev, conn_update_sync,
+ conn,
+ conn_update_sync_destroy) < 0)
+ hci_conn_put(conn);
+ }
}
}
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 109/675] Bluetooth: hci_sync: extend conn_hash lookup critical sections
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (107 preceding siblings ...)
2026-07-30 14:07 ` [PATCH 6.18 108/675] Bluetooth: MGMT: revalidate LOAD_CONN_PARAM queued update Greg Kroah-Hartman
@ 2026-07-30 14:07 ` Greg Kroah-Hartman
2026-07-30 14:07 ` [PATCH 6.18 110/675] Bluetooth: mgmt: fix locking in unpair_device/disconnect_sync Greg Kroah-Hartman
` (570 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:07 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Pauli Virtanen,
Luiz Augusto von Dentz, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Pauli Virtanen <pav@iki.fi>
[ Upstream commit d5efd6e4b8b0634af6843178fe1a7dd2b2178a3d ]
Using RCU-protected pointers outside the critical sections without
refcount is incorrect and may result to UAF.
Extend critical section to cover both hci_conn_hash lookup and use of
the returned conn.
Add surrounding rcu_read_lock() also when return value is not used, in
preparation for RCU lockdep requirement to hci_lookup_le_connect().
This avoids concurrent deletion of the conn before we are done
dereferencing it.
Also, make sure to hold hdev->lock when accessing hdev->accept_list.
Fixes: 6d0417e4e1cf ("Bluetooth: hci_conn: Fix not setting conn_timeout for Broadcast Receiver")
Signed-off-by: Pauli Virtanen <pav@iki.fi>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/bluetooth/hci_sync.c | 42 +++++++++++++++++++++++++++++++++++++---
1 file changed, 39 insertions(+), 3 deletions(-)
diff --git a/net/bluetooth/hci_sync.c b/net/bluetooth/hci_sync.c
index a8404027724de8..651caa4a05d36e 100644
--- a/net/bluetooth/hci_sync.c
+++ b/net/bluetooth/hci_sync.c
@@ -1054,14 +1054,19 @@ static int hci_set_random_addr_sync(struct hci_dev *hdev, bdaddr_t *rpa)
* In this kind of scenario skip the update and let the random
* address be updated at the next cycle.
*/
+ rcu_read_lock();
+
if (bacmp(&hdev->random_addr, BDADDR_ANY) &&
(hci_dev_test_flag(hdev, HCI_LE_ADV) ||
hci_lookup_le_connect(hdev))) {
bt_dev_dbg(hdev, "Deferring random address update");
hci_dev_set_flag(hdev, HCI_RPA_EXPIRED);
+ rcu_read_unlock();
return 0;
}
+ rcu_read_unlock();
+
return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_RANDOM_ADDR,
6, rpa, HCI_CMD_TIMEOUT);
}
@@ -2647,12 +2652,17 @@ static int hci_pause_addr_resolution(struct hci_dev *hdev)
/* Cannot disable addr resolution if scanning is enabled or
* when initiating an LE connection.
*/
+ rcu_read_lock();
+
if (hci_dev_test_flag(hdev, HCI_LE_SCAN) ||
hci_lookup_le_connect(hdev)) {
+ rcu_read_unlock();
bt_dev_err(hdev, "Command not allowed when scan/LE connect");
return -EPERM;
}
+ rcu_read_unlock();
+
/* Cannot disable addr resolution if advertising is enabled. */
err = hci_pause_advertising_sync(hdev);
if (err) {
@@ -2790,6 +2800,8 @@ static u8 hci_update_accept_list_sync(struct hci_dev *hdev)
if (hci_dev_test_flag(hdev, HCI_PA_SYNC)) {
struct hci_conn *conn;
+ rcu_read_lock();
+
conn = hci_conn_hash_lookup_create_pa_sync(hdev);
if (conn) {
struct conn_params pa;
@@ -2799,6 +2811,8 @@ static u8 hci_update_accept_list_sync(struct hci_dev *hdev)
bacpy(&pa.addr, &conn->dst);
pa.addr_type = conn->dst_type;
+ rcu_read_unlock();
+
/* Clear first since there could be addresses left
* behind.
*/
@@ -2808,6 +2822,8 @@ static u8 hci_update_accept_list_sync(struct hci_dev *hdev)
err = hci_le_add_accept_list_sync(hdev, &pa,
&num_entries);
goto done;
+ } else {
+ rcu_read_unlock();
}
}
@@ -2818,10 +2834,13 @@ static u8 hci_update_accept_list_sync(struct hci_dev *hdev)
* the controller.
*/
list_for_each_entry_safe(b, t, &hdev->le_accept_list, list) {
- if (hci_conn_hash_lookup_le(hdev, &b->bdaddr, b->bdaddr_type))
+ rcu_read_lock();
+
+ if (hci_conn_hash_lookup_le(hdev, &b->bdaddr, b->bdaddr_type)) {
+ rcu_read_unlock();
continue;
+ }
- /* Pointers not dereferenced, no locks needed */
pend_conn = hci_pend_le_action_lookup(&hdev->pend_le_conns,
&b->bdaddr,
b->bdaddr_type);
@@ -2829,6 +2848,8 @@ static u8 hci_update_accept_list_sync(struct hci_dev *hdev)
&b->bdaddr,
b->bdaddr_type);
+ rcu_read_unlock();
+
/* If the device is not likely to connect or report,
* remove it from the acceptlist.
*/
@@ -2955,6 +2976,8 @@ static int hci_le_set_ext_scan_param_sync(struct hci_dev *hdev, u8 type,
if (sent) {
struct hci_conn *conn;
+ rcu_read_lock();
+
conn = hci_conn_hash_lookup_ba(hdev, PA_LINK,
&sent->bdaddr);
if (conn) {
@@ -2979,8 +3002,12 @@ static int hci_le_set_ext_scan_param_sync(struct hci_dev *hdev, u8 type,
phy++;
}
+ rcu_read_unlock();
+
if (num_phy)
goto done;
+ } else {
+ rcu_read_unlock();
}
}
}
@@ -3231,12 +3258,16 @@ int hci_update_passive_scan_sync(struct hci_dev *hdev)
/* If there is at least one pending LE connection, we should
* keep the background scan running.
*/
+ bool exists;
/* If controller is connecting, we should not start scanning
* since some controllers are not able to scan and connect at
* the same time.
*/
- if (hci_lookup_le_connect(hdev))
+ rcu_read_lock();
+ exists = hci_lookup_le_connect(hdev);
+ rcu_read_unlock();
+ if (exists)
return 0;
bt_dev_dbg(hdev, "start background scanning");
@@ -3451,6 +3482,7 @@ int hci_write_fast_connectable_sync(struct hci_dev *hdev, bool enable)
}
static bool disconnected_accept_list_entries(struct hci_dev *hdev)
+ __must_hold(&hdev->lock)
{
struct bdaddr_list *b;
@@ -3491,12 +3523,16 @@ int hci_update_scan_sync(struct hci_dev *hdev)
if (hdev->scanning_paused)
return 0;
+ hci_dev_lock(hdev);
+
if (hci_dev_test_flag(hdev, HCI_CONNECTABLE) ||
disconnected_accept_list_entries(hdev))
scan = SCAN_PAGE;
else
scan = SCAN_DISABLED;
+ hci_dev_unlock(hdev);
+
if (hci_dev_test_flag(hdev, HCI_DISCOVERABLE))
scan |= SCAN_INQUIRY;
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 110/675] Bluetooth: mgmt: fix locking in unpair_device/disconnect_sync
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (108 preceding siblings ...)
2026-07-30 14:07 ` [PATCH 6.18 109/675] Bluetooth: hci_sync: extend conn_hash lookup critical sections Greg Kroah-Hartman
@ 2026-07-30 14:07 ` Greg Kroah-Hartman
2026-07-30 14:07 ` [PATCH 6.18 111/675] Bluetooth: mgmt: hold reference for hci_conn in mgmt_pending_cmds Greg Kroah-Hartman
` (569 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:07 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Pauli Virtanen,
Luiz Augusto von Dentz, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Pauli Virtanen <pav@iki.fi>
[ Upstream commit 16cd66443957e4ad42155c6fec401012f600c6f8 ]
Dereferencing RCU-protected pointers outside critical sections is
invalid and may lead to UAF.
Take hdev->lock for hci_conn lookup and hci_abort_conn(). Don't use RCU
to ensure the conn is fully initialized at this point.
Fixes: 227a0cdf4a028 ("Bluetooth: MGMT: Fix not generating command complete for MGMT_OP_DISCONNECT")
Signed-off-by: Pauli Virtanen <pav@iki.fi>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/bluetooth/mgmt.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index 4c8b172e85d006..0ef1192e5e452e 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -3082,6 +3082,8 @@ static int unpair_device_sync(struct hci_dev *hdev, void *data)
struct mgmt_cp_unpair_device *cp = cmd->param;
struct hci_conn *conn;
+ hci_dev_lock(hdev);
+
if (cp->addr.type == BDADDR_BREDR)
conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK,
&cp->addr.bdaddr);
@@ -3089,6 +3091,11 @@ static int unpair_device_sync(struct hci_dev *hdev, void *data)
conn = hci_conn_hash_lookup_le(hdev, &cp->addr.bdaddr,
le_addr_type(cp->addr.type));
+ if (conn)
+ hci_conn_get(conn);
+
+ hci_dev_unlock(hdev);
+
if (!conn)
return 0;
@@ -3096,6 +3103,7 @@ static int unpair_device_sync(struct hci_dev *hdev, void *data)
* will clean up the connection no matter the error.
*/
hci_abort_conn(conn, HCI_ERROR_REMOTE_USER_TERM);
+ hci_conn_put(conn);
return 0;
}
@@ -3243,6 +3251,8 @@ static int disconnect_sync(struct hci_dev *hdev, void *data)
struct mgmt_cp_disconnect *cp = cmd->param;
struct hci_conn *conn;
+ hci_dev_lock(hdev);
+
if (cp->addr.type == BDADDR_BREDR)
conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK,
&cp->addr.bdaddr);
@@ -3250,6 +3260,11 @@ static int disconnect_sync(struct hci_dev *hdev, void *data)
conn = hci_conn_hash_lookup_le(hdev, &cp->addr.bdaddr,
le_addr_type(cp->addr.type));
+ if (conn)
+ hci_conn_get(conn);
+
+ hci_dev_unlock(hdev);
+
if (!conn)
return -ENOTCONN;
@@ -3257,6 +3272,7 @@ static int disconnect_sync(struct hci_dev *hdev, void *data)
* will clean up the connection no matter the error.
*/
hci_abort_conn(conn, HCI_ERROR_REMOTE_USER_TERM);
+ hci_conn_put(conn);
return 0;
}
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 111/675] Bluetooth: mgmt: hold reference for hci_conn in mgmt_pending_cmds
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (109 preceding siblings ...)
2026-07-30 14:07 ` [PATCH 6.18 110/675] Bluetooth: mgmt: fix locking in unpair_device/disconnect_sync Greg Kroah-Hartman
@ 2026-07-30 14:07 ` Greg Kroah-Hartman
2026-07-30 14:07 ` [PATCH 6.18 112/675] Bluetooth: hci_qca: Clear memdump state on invalid dump size Greg Kroah-Hartman
` (568 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:07 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Pauli Virtanen,
Luiz Augusto von Dentz, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Pauli Virtanen <pav@iki.fi>
[ Upstream commit da55f570191d5d72f10c607a7043b947eb05ea46 ]
Dereferencing RCU-protected pointers outside critical sections is
invalid and may lead to UAF. Use of hci_conn in hci_sync callbacks also
needs to hold refcount to avoid UAF.
Take appropriate locks for hci_conn lookups, and take refcount for
hci_conn pointers stored in mgmt_pending_cmd so that the pointer stays
valid.
When accessing conn->state, ensure hdev->lock is held to avoid data
race.
Fixes: 7b445e220db9 ("Bluetooth: MGMT: Fix holding hci_conn reference while command is queued")
Signed-off-by: Pauli Virtanen <pav@iki.fi>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/bluetooth/mgmt.c | 26 ++++++++++++++++++++++----
1 file changed, 22 insertions(+), 4 deletions(-)
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index 0ef1192e5e452e..79eb605be2804c 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -7325,6 +7325,9 @@ static void get_conn_info_complete(struct hci_dev *hdev, void *data, int err)
rp.max_tx_power = HCI_TX_POWER_INVALID;
}
+ if (conn)
+ hci_conn_put(conn);
+
mgmt_cmd_complete(cmd->sk, cmd->hdev->id, MGMT_OP_GET_CONN_INFO, status,
&rp, sizeof(rp));
@@ -7339,6 +7342,8 @@ static int get_conn_info_sync(struct hci_dev *hdev, void *data)
int err;
__le16 handle;
+ hci_dev_lock(hdev);
+
/* Make sure we are still connected */
if (cp->addr.type == BDADDR_BREDR)
conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK,
@@ -7346,12 +7351,16 @@ static int get_conn_info_sync(struct hci_dev *hdev, void *data)
else
conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, &cp->addr.bdaddr);
- if (!conn || conn->state != BT_CONNECTED)
+ if (!conn || conn->state != BT_CONNECTED) {
+ hci_dev_unlock(hdev);
return MGMT_STATUS_NOT_CONNECTED;
+ }
- cmd->user_data = conn;
+ cmd->user_data = hci_conn_get(conn);
handle = cpu_to_le16(conn->handle);
+ hci_dev_unlock(hdev);
+
/* Refresh RSSI each time */
err = hci_read_rssi_sync(hdev, handle);
@@ -7485,6 +7494,9 @@ static void get_clock_info_complete(struct hci_dev *hdev, void *data, int err)
}
complete:
+ if (conn)
+ hci_conn_put(conn);
+
mgmt_cmd_complete(cmd->sk, cmd->hdev->id, cmd->opcode, status, &rp,
sizeof(rp));
@@ -7501,15 +7513,21 @@ static int get_clock_info_sync(struct hci_dev *hdev, void *data)
memset(&hci_cp, 0, sizeof(hci_cp));
hci_read_clock_sync(hdev, &hci_cp);
+ hci_dev_lock(hdev);
+
/* Make sure connection still exists */
conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->addr.bdaddr);
- if (!conn || conn->state != BT_CONNECTED)
+ if (!conn || conn->state != BT_CONNECTED) {
+ hci_dev_unlock(hdev);
return MGMT_STATUS_NOT_CONNECTED;
+ }
- cmd->user_data = conn;
+ cmd->user_data = hci_conn_get(conn);
hci_cp.handle = cpu_to_le16(conn->handle);
hci_cp.which = 0x01; /* Piconet clock */
+ hci_dev_unlock(hdev);
+
return hci_read_clock_sync(hdev, &hci_cp);
}
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 112/675] Bluetooth: hci_qca: Clear memdump state on invalid dump size
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (110 preceding siblings ...)
2026-07-30 14:07 ` [PATCH 6.18 111/675] Bluetooth: mgmt: hold reference for hci_conn in mgmt_pending_cmds Greg Kroah-Hartman
@ 2026-07-30 14:07 ` Greg Kroah-Hartman
2026-07-30 14:07 ` [PATCH 6.18 113/675] smb/client: handle overlapping allocated ranges in fallocate Greg Kroah-Hartman
` (567 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:07 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Ruoyu Wang, Paul Menzel, Zijun Hu,
Luiz Augusto von Dentz, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Ruoyu Wang <ruoyuw560@gmail.com>
[ Upstream commit bf587a10c33e5571a299742e45bc18960b9912e7 ]
qca_controller_memdump() allocates qca->qca_memdump before processing
the first dump packet. For a sequence-zero packet it then disables IBS,
marks memdump collection active, and reads the advertised dump size.
If the controller reports a zero dump size, the error path frees the
local qca_memdump object and returns without clearing qca->qca_memdump
or undoing the collection state. A later memdump work item initializes
its local pointer from qca->qca_memdump and skips allocation when that
pointer is non-NULL, so it can operate on freed memory. The stale
collection and IBS-disabled flags can also leave waiters or later
transmit handling blocked behind an aborted dump.
Clear the saved pointer and memdump state before returning from the
invalid-size path, matching the cleanup used when hci_devcd_init() fails.
A static analysis checker reported the stale memdump state, and manual
source review confirmed the invalid-size failure path.
Fixes: 06d3fdfcdf5c ("Bluetooth: hci_qca: Add qcom devcoredump support")
Signed-off-by: Ruoyu Wang <ruoyuw560@gmail.com>
Reviewed-by: Paul Menzel <pmenzel@molgen.mpg.de>
Reviewed-by: Zijun Hu <zijun.hu@oss.qualcomm.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/bluetooth/hci_qca.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/bluetooth/hci_qca.c b/drivers/bluetooth/hci_qca.c
index c649a3f702c042..b510b03dae870f 100644
--- a/drivers/bluetooth/hci_qca.c
+++ b/drivers/bluetooth/hci_qca.c
@@ -1083,6 +1083,10 @@ static void qca_controller_memdump(struct work_struct *work)
if (!(qca_memdump->ram_dump_size)) {
bt_dev_err(hu->hdev, "Rx invalid memdump size");
kfree(qca_memdump);
+ qca->qca_memdump = NULL;
+ qca->memdump_state = QCA_MEMDUMP_COLLECTED;
+ clear_and_wake_up_bit(QCA_MEMDUMP_COLLECTION, &qca->flags);
+ clear_bit(QCA_IBS_DISABLED, &qca->flags);
kfree_skb(skb);
mutex_unlock(&qca->hci_memdump_lock);
return;
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 113/675] smb/client: handle overlapping allocated ranges in fallocate
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (111 preceding siblings ...)
2026-07-30 14:07 ` [PATCH 6.18 112/675] Bluetooth: hci_qca: Clear memdump state on invalid dump size Greg Kroah-Hartman
@ 2026-07-30 14:07 ` Greg Kroah-Hartman
2026-07-30 14:07 ` [PATCH 6.18 114/675] drm/i915/gt: use correct selftest config symbol Greg Kroah-Hartman
` (566 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:07 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Huiwen He, ChenXiaoSong,
Steve French, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Huiwen He <hehuiwen@kylinos.cn>
[ Upstream commit b09ae45d85dc816987a71db9eebc54b0ae288e94 ]
smb3_simple_fallocate_range() can skip holes when an allocated range
returned by the server starts before the current fallocate offset. The
skipped hole is not zero-filled, but fallocate still returns success. A
later write to that hole may therefore fail with ENOSPC.
The function queries allocated ranges so that it can preserve existing
contents and write zeroes only into holes. However, the server may return
a range that starts before the current fallocate offset.
For example, assume the fallocate request is [100, 400) and the only
allocated range returned by the server is [0, 200):
Request: [100, 400)
Server range: [ 0, 200) allocated
Correct:
[100, 200) allocated data, skip
[200, 400) hole, zero-fill
Current:
[100, 300) skipped
[300, 400) zero-filled afterwards
The current code adds the full server range length, 200, to the current
offset 100 and moves to 300. As a result, the hole in [200, 300) is
skipped without being zero-filled.
Fix this by advancing only over the part of the allocated range that
overlaps the current fallocate offset. Ignore ranges that end before the
current offset and reject ranges whose end offset overflows.
This also prevents a malformed range length from causing an out-of-bounds
zero-buffer read.
Fixes: 966a3cb7c7db ("cifs: improve fallocate emulation")
Signed-off-by: Huiwen He <hehuiwen@kylinos.cn>
Reviewed-by: ChenXiaoSong <chenxiaosong@kylinos.cn>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
fs/smb/client/smb2ops.c | 25 ++++++++++++++++++-------
1 file changed, 18 insertions(+), 7 deletions(-)
diff --git a/fs/smb/client/smb2ops.c b/fs/smb/client/smb2ops.c
index 786a7e963f1ff4..5bbe98dc0529b9 100644
--- a/fs/smb/client/smb2ops.c
+++ b/fs/smb/client/smb2ops.c
@@ -3546,6 +3546,7 @@ static int smb3_simple_fallocate_range(unsigned int xid,
struct file_allocated_range_buffer in_data, *out_data = NULL, *tmp_data;
u32 out_data_len;
char *buf = NULL;
+ u64 range_start, range_len, range_end;
loff_t l;
int rc;
@@ -3582,13 +3583,21 @@ static int smb3_simple_fallocate_range(unsigned int xid,
goto out;
}
- if (off < le64_to_cpu(tmp_data->file_offset)) {
+ range_start = le64_to_cpu(tmp_data->file_offset);
+ range_len = le64_to_cpu(tmp_data->length);
+ if (check_add_overflow(range_start, range_len, &range_end) ||
+ range_end > S64_MAX) {
+ rc = -EINVAL;
+ goto out;
+ }
+
+ if (off < range_start) {
/*
* We are at a hole. Write until the end of the region
* or until the next allocated data,
* whichever comes next.
*/
- l = le64_to_cpu(tmp_data->file_offset) - off;
+ l = range_start - off;
if (len < l)
l = len;
rc = smb3_simple_fallocate_write_range(xid, tcon,
@@ -3605,11 +3614,13 @@ static int smb3_simple_fallocate_range(unsigned int xid,
* until the end of the data or the end of the region
* we are supposed to fallocate, whichever comes first.
*/
- l = le64_to_cpu(tmp_data->length);
- if (len < l)
- l = len;
- off += l;
- len -= l;
+ if (off < range_end) {
+ l = range_end - off;
+ if (len < l)
+ l = len;
+ off += l;
+ len -= l;
+ }
tmp_data = &tmp_data[1];
out_data_len -= sizeof(struct file_allocated_range_buffer);
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 114/675] drm/i915/gt: use correct selftest config symbol
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (112 preceding siblings ...)
2026-07-30 14:07 ` [PATCH 6.18 113/675] smb/client: handle overlapping allocated ranges in fallocate Greg Kroah-Hartman
@ 2026-07-30 14:07 ` Greg Kroah-Hartman
2026-07-30 14:07 ` [PATCH 6.18 115/675] can: raw: add locking for raw flags bitfield Greg Kroah-Hartman
` (565 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:07 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Pengpeng Hou, Tvrtko Ursulin,
Rodrigo Vivi, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Pengpeng Hou <pengpeng@iscas.ac.cn>
[ Upstream commit a82f1bb8191aec98a971a2196136016ef70c0880 ]
intel_engine_user.c checks CONFIG_DRM_I915_SELFTESTS before running
the engine UABI isolation check. Kconfig defines DRM_I915_SELFTEST,
without the trailing "S", and the rest of i915 uses
CONFIG_DRM_I915_SELFTEST.
Because CONFIG_DRM_I915_SELFTESTS is not backed by any Kconfig symbol,
the IS_ENABLED() test is always false. Use the existing selftest symbol
so the debug/selftest guarded path can be reached when selftests are
enabled.
This is a source-level fix. It does not claim dynamic hardware
reproduction; the evidence is the Kconfig definition and the inconsistent
guard in intel_engine_user.c.
Fixes: 750e76b4f9f6 ("drm/i915/gt: Move the [class][inst] lookup for engines onto the GT")
Signed-off-by: Pengpeng Hou <pengpeng@iscas.ac.cn>
Signed-off-by: Tvrtko Ursulin <tursulin@ursulin.net>
Link: https://lore.kernel.org/r/20260705080225.436-1-pengpeng@iscas.ac.cn
(cherry picked from commit 14a2012a490258f3f93857bc4f1b203405964be7)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/i915/gt/intel_engine_user.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/gt/intel_engine_user.c b/drivers/gpu/drm/i915/gt/intel_engine_user.c
index 833987015b8bbc..ed42b9d05a07d5 100644
--- a/drivers/gpu/drm/i915/gt/intel_engine_user.c
+++ b/drivers/gpu/drm/i915/gt/intel_engine_user.c
@@ -257,7 +257,7 @@ void intel_engines_driver_register(struct drm_i915_private *i915)
p = &prev->rb_right;
}
- if (IS_ENABLED(CONFIG_DRM_I915_SELFTESTS) &&
+ if (IS_ENABLED(CONFIG_DRM_I915_SELFTEST) &&
IS_ENABLED(CONFIG_DRM_I915_DEBUG_GEM)) {
struct intel_engine_cs *engine;
unsigned int isolation;
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 115/675] can: raw: add locking for raw flags bitfield
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (113 preceding siblings ...)
2026-07-30 14:07 ` [PATCH 6.18 114/675] drm/i915/gt: use correct selftest config symbol Greg Kroah-Hartman
@ 2026-07-30 14:07 ` Greg Kroah-Hartman
2026-07-30 14:07 ` [PATCH 6.18 116/675] powerpc/85xx: Add fsl,ifc to common device ids Greg Kroah-Hartman
` (564 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:07 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Eulgyu Kim, Oliver Hartkopp,
Vincent Mailhol, Marc Kleine-Budde, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Oliver Hartkopp <socketcan@hartkopp.net>
[ Upstream commit 1e5185c090589f4146d728ab36417d8a5419f127 ]
With commit 890e5198a6e5 ("can: raw: use bitfields to store flags in
struct raw_sock") the formerly separate integer values have been integrated
into a single bitfield. This led to a read-modify-write operation when
changing a flag in raw_setsockopt() which now needs a locking to prevent
concurrent access.
Instead of adding a lock/unlock hell in each of the flag manipulations this
patch introduces a wrapper for a new raw_setsockopt_locked() function
analogue to the isotp_setsockopt[_locked]() approach in net/can/isotp.c
Fixes: 890e5198a6e5 ("can: raw: use bitfields to store flags in struct raw_sock")
Reported-by: Eulgyu Kim <eulgyukim@snu.ac.kr>
Closes: https://lore.kernel.org/linux-can/20260503112200.22727-1-eulgyukim@snu.ac.kr/
Tested-by: Eulgyu Kim <eulgyukim@snu.ac.kr>
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Reviewed-by: Vincent Mailhol <mailhol@kernel.org>
Tested-by: Vincent Mailhol <mailhol@kernel.org>
Link: https://patch.msgid.link/20260504111928.41856-1-socketcan@hartkopp.net
[mkl: use Closes tag instead of Link]
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/can/raw.c | 66 +++++++++++++++++++++++----------------------------
1 file changed, 30 insertions(+), 36 deletions(-)
diff --git a/net/can/raw.c b/net/can/raw.c
index 263e7167d2f529..365559d19dc323 100644
--- a/net/can/raw.c
+++ b/net/can/raw.c
@@ -560,8 +560,8 @@ static int raw_getname(struct socket *sock, struct sockaddr *uaddr,
return RAW_MIN_NAMELEN;
}
-static int raw_setsockopt(struct socket *sock, int level, int optname,
- sockptr_t optval, unsigned int optlen)
+static int raw_setsockopt_locked(struct socket *sock, int optname,
+ sockptr_t optval, unsigned int optlen)
{
struct sock *sk = sock->sk;
struct raw_sock *ro = raw_sk(sk);
@@ -573,9 +573,6 @@ static int raw_setsockopt(struct socket *sock, int level, int optname,
int flag;
int err = 0;
- if (level != SOL_CAN_RAW)
- return -EINVAL;
-
switch (optname) {
case CAN_RAW_FILTER:
if (optlen % sizeof(struct can_filter) != 0)
@@ -596,17 +593,11 @@ static int raw_setsockopt(struct socket *sock, int level, int optname,
return -EFAULT;
}
- rtnl_lock();
- lock_sock(sk);
-
dev = ro->dev;
- if (ro->bound && dev) {
- if (dev->reg_state != NETREG_REGISTERED) {
- if (count > 1)
- kfree(filter);
- err = -ENODEV;
- goto out_fil;
- }
+ if (ro->bound && dev && dev->reg_state != NETREG_REGISTERED) {
+ if (count > 1)
+ kfree(filter);
+ return -ENODEV;
}
if (ro->bound) {
@@ -620,7 +611,7 @@ static int raw_setsockopt(struct socket *sock, int level, int optname,
if (err) {
if (count > 1)
kfree(filter);
- goto out_fil;
+ return err;
}
/* remove old filter registrations */
@@ -640,11 +631,6 @@ static int raw_setsockopt(struct socket *sock, int level, int optname,
}
ro->filter = filter;
ro->count = count;
-
- out_fil:
- release_sock(sk);
- rtnl_unlock();
-
break;
case CAN_RAW_ERR_FILTER:
@@ -656,16 +642,9 @@ static int raw_setsockopt(struct socket *sock, int level, int optname,
err_mask &= CAN_ERR_MASK;
- rtnl_lock();
- lock_sock(sk);
-
dev = ro->dev;
- if (ro->bound && dev) {
- if (dev->reg_state != NETREG_REGISTERED) {
- err = -ENODEV;
- goto out_err;
- }
- }
+ if (ro->bound && dev && dev->reg_state != NETREG_REGISTERED)
+ return -ENODEV;
/* remove current error mask */
if (ro->bound) {
@@ -674,7 +653,7 @@ static int raw_setsockopt(struct socket *sock, int level, int optname,
err_mask);
if (err)
- goto out_err;
+ return err;
/* remove old err_mask registration */
raw_disable_errfilter(sock_net(sk), dev, sk,
@@ -683,11 +662,6 @@ static int raw_setsockopt(struct socket *sock, int level, int optname,
/* link new err_mask to the socket */
ro->err_mask = err_mask;
-
- out_err:
- release_sock(sk);
- rtnl_unlock();
-
break;
case CAN_RAW_LOOPBACK:
@@ -767,6 +741,26 @@ static int raw_setsockopt(struct socket *sock, int level, int optname,
return err;
}
+static int raw_setsockopt(struct socket *sock, int level, int optname,
+ sockptr_t optval, unsigned int optlen)
+{
+ struct sock *sk = sock->sk;
+ int err;
+
+ if (level != SOL_CAN_RAW)
+ return -EINVAL;
+
+ rtnl_lock();
+ lock_sock(sk);
+
+ err = raw_setsockopt_locked(sock, optname, optval, optlen);
+
+ release_sock(sk);
+ rtnl_unlock();
+
+ return err;
+}
+
static int raw_getsockopt(struct socket *sock, int level, int optname,
char __user *optval, int __user *optlen)
{
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 116/675] powerpc/85xx: Add fsl,ifc to common device ids
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (114 preceding siblings ...)
2026-07-30 14:07 ` [PATCH 6.18 115/675] can: raw: add locking for raw flags bitfield Greg Kroah-Hartman
@ 2026-07-30 14:07 ` Greg Kroah-Hartman
2026-07-30 14:07 ` [PATCH 6.18 117/675] powerpc/time: Prepare to stop elapsing in dynticks-idle Greg Kroah-Hartman
` (563 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:07 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Rosen Penev, Madhavan Srinivasan,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Rosen Penev <rosenp@gmail.com>
[ Upstream commit 25957f7c3dac3265332d766b71233e3622f17e14 ]
Add fsl,ifc to mpc85xx_common_ids so that of_platform_bus_probe
creates a platform device for the IFC node even without 'simple-bus'
in its compatible property. On P1010 and similar platforms the IFC
node is a direct child of the root, so it must be explicitly matched
to be populated.
Fixes: 0bf51cc9e9e5 ("powerpc: dts: mpc85xx: remove "simple-bus" compatible from ifc node")
Assisted-by: opencode:big-pickle
Signed-off-by: Rosen Penev <rosenp@gmail.com>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20260604043309.91280-1-rosenp@gmail.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
arch/powerpc/platforms/85xx/common.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/powerpc/platforms/85xx/common.c b/arch/powerpc/platforms/85xx/common.c
index 757811155587db..c11deb2f50ed45 100644
--- a/arch/powerpc/platforms/85xx/common.c
+++ b/arch/powerpc/platforms/85xx/common.c
@@ -42,6 +42,8 @@ static const struct of_device_id mpc85xx_common_ids[] __initconst = {
{ .compatible = "fsl,qoriq-pcie-v2.3", },
{ .compatible = "fsl,qoriq-pcie-v2.2", },
{ .compatible = "fsl,fman", },
+ /* IFC NAND and NOR controllers */
+ { .compatible = "fsl,ifc", },
{},
};
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 117/675] powerpc/time: Prepare to stop elapsing in dynticks-idle
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (115 preceding siblings ...)
2026-07-30 14:07 ` [PATCH 6.18 116/675] powerpc/85xx: Add fsl,ifc to common device ids Greg Kroah-Hartman
@ 2026-07-30 14:07 ` Greg Kroah-Hartman
2026-07-30 14:07 ` [PATCH 6.18 118/675] powerpc/vtime: Initialize starttime at boot for native accounting Greg Kroah-Hartman
` (562 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:07 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Frederic Weisbecker, Thomas Gleixner,
Shrikanth Hegde, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Frederic Weisbecker <frederic@kernel.org>
[ Upstream commit c8ba971cf8567d49eb5f43ee90c4e50424331c18 ]
Currently the tick subsystem stores the idle cputime accounting in
private fields, allowing cohabitation with architecture idle vtime
accounting. The former is fetched on online CPUs, the latter on offline
CPUs.
For consolidation purpose, architecture vtime accounting will continue
to account the cputime but will make a break when the idle tick is
stopped. The dyntick cputime accounting will then be relayed by the tick
subsystem so that the idle cputime is still seen advancing coherently
even when the tick isn't there to flush the idle vtime.
Prepare for that and introduce three new APIs which will be used in
subsequent patches:
- vtime_dynticks_start() is deemed to be called when idle enters in
dyntick mode. The idle cputime that elapsed so far is accumulated.
- vtime_dynticks_stop() is deemed to be called when idle exits from
dyntick mode. The vtime entry clocks are fast-forward to current time
so that idle accounting restarts elapsing from now.
- vtime_reset() is deemed to be called from dynticks idle IRQ entry to
fast-forward the clock to current time so that the IRQ time is still
accounted by vtime while nohz cputime is paused.
Also accumulated vtime won't be flushed from dyntick-idle ticks to avoid
accounting twice the idle cputime, along with nohz accounting.
Signed-off-by: Frederic Weisbecker <frederic@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Tested-by: Shrikanth Hegde <sshegde@linux.ibm.com>
Reviewed-by: Shrikanth Hegde <sshegde@linux.ibm.com>
Link: https://patch.msgid.link/20260508131647.43868-6-frederic@kernel.org
Stable-dep-of: c1c1ffa490fc ("powerpc/vtime: Initialize starttime at boot for native accounting")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
arch/powerpc/kernel/time.c | 41 ++++++++++++++++++++++++++++++++++++++
include/linux/vtime.h | 6 ++++++
2 files changed, 47 insertions(+)
diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c
index b4472288e0d434..3460d1a5a97c2a 100644
--- a/arch/powerpc/kernel/time.c
+++ b/arch/powerpc/kernel/time.c
@@ -376,6 +376,47 @@ void vtime_task_switch(struct task_struct *prev)
acct->starttime = acct0->starttime;
}
}
+
+#ifdef CONFIG_NO_HZ_COMMON
+/**
+ * vtime_reset - Fast forward vtime entry clocks
+ *
+ * Called from dynticks idle IRQ entry to fast-forward the clocks to current time
+ * so that the IRQ time is still accounted by vtime while nohz cputime is paused.
+ */
+void vtime_reset(void)
+{
+ struct cpu_accounting_data *acct = get_accounting(current);
+
+ acct->starttime = mftb();
+#ifdef CONFIG_ARCH_HAS_SCALED_CPUTIME
+ acct->startspurr = read_spurr(acct->starttime);
+#endif
+}
+
+/**
+ * vtime_dyntick_start - Inform vtime about entry to idle-dynticks
+ *
+ * Called when idle enters in dyntick mode. The idle cputime that elapsed so far
+ * is accumulated and the tick subsystem takes over the idle cputime accounting.
+ */
+void vtime_dyntick_start(void)
+{
+ vtime_account_idle(current);
+}
+
+/**
+ * vtime_dyntick_stop - Inform vtime about exit from idle-dynticks
+ *
+ * Called when idle exits from dyntick mode. The vtime entry clocks are
+ * fast-forward to current time so that idle accounting restarts elapsing from
+ * now.
+ */
+void vtime_dyntick_stop(void)
+{
+ vtime_reset();
+}
+#endif /* CONFIG_NO_HZ_COMMON */
#endif /* CONFIG_VIRT_CPU_ACCOUNTING_NATIVE */
void __no_kcsan __delay(unsigned long loops)
diff --git a/include/linux/vtime.h b/include/linux/vtime.h
index 29dd5b91dd7d66..3fc04b849e4e30 100644
--- a/include/linux/vtime.h
+++ b/include/linux/vtime.h
@@ -32,11 +32,17 @@ extern void vtime_account_irq(struct task_struct *tsk, unsigned int offset);
extern void vtime_account_softirq(struct task_struct *tsk);
extern void vtime_account_hardirq(struct task_struct *tsk);
extern void vtime_flush(struct task_struct *tsk);
+extern void vtime_reset(void);
+extern void vtime_dyntick_start(void);
+extern void vtime_dyntick_stop(void);
#else /* !CONFIG_VIRT_CPU_ACCOUNTING_NATIVE */
static inline void vtime_account_irq(struct task_struct *tsk, unsigned int offset) { }
static inline void vtime_account_softirq(struct task_struct *tsk) { }
static inline void vtime_account_hardirq(struct task_struct *tsk) { }
static inline void vtime_flush(struct task_struct *tsk) { }
+static inline void vtime_reset(void) { }
+static inline void vtime_dyntick_start(void) { }
+static inline void vtime_dyntick_stop(void) { }
#endif
/*
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 118/675] powerpc/vtime: Initialize starttime at boot for native accounting
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (116 preceding siblings ...)
2026-07-30 14:07 ` [PATCH 6.18 117/675] powerpc/time: Prepare to stop elapsing in dynticks-idle Greg Kroah-Hartman
@ 2026-07-30 14:07 ` Greg Kroah-Hartman
2026-07-30 14:07 ` [PATCH 6.18 119/675] bpf, sockmap: Reject unhashed UDP sockets on sockmap update Greg Kroah-Hartman
` (561 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:07 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Christophe Leroy (CS GROUP),
Shrikanth Hegde, Madhavan Srinivasan, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Shrikanth Hegde <sshegde@linux.ibm.com>
[ Upstream commit c1c1ffa490fc33591e90852ed0d38804dd20bc36 ]
It was observed that /proc/stat had very large value for one ore more
CPUs. It was more visible after recent code simplifications around
cpustats.
System has 240 CPUs.
cat /proc/uptime;
194.18 46500.55
cat /proc/stat
cpu 5966 39 837032887 4650070 164 185 100 0 0 0
cpu0 108 0 837030890 19109 24 4 23 0 0 0
Since uptime is 194s, system time of each CPU can't be more than 19400.
Sum of system time of all CPUs can't be more than 19400*240 4656000.
In fact huge value is close to mftb(). Note mftb doesn't reset on powerVM
when the LPAR restart. It only resets when whole system resets. The same
issue exists for kexec too.
This happens since starttime is not setup at init time. Once it is set
then subsequent vtime_delta will return the right delta.
Fix it by initializing the starttime during CPU initialization. This
fixes the large times seen.
cat /proc/uptime; cat /proc/stat
15.78 3694.63
cpu 6035 35 1347 369479 23 144 49 0 0 0
cpu0 19 0 38 1508 0 1 14 0 0 0
Now, system time is reported as expected.
Fixes: cf9efce0ce31 ("powerpc: Account time using timebase rather than PURR")
Reviewed-by: Christophe Leroy (CS GROUP) <chleroy@kernel.org>
Suggested-by: Christophe Leroy (CS GROUP) <chleroy@kernel.org>
Signed-off-by: Shrikanth Hegde <sshegde@linux.ibm.com>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20260605124329.377533-1-sshegde@linux.ibm.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
arch/powerpc/kernel/time.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c
index 3460d1a5a97c2a..11145c40183dd1 100644
--- a/arch/powerpc/kernel/time.c
+++ b/arch/powerpc/kernel/time.c
@@ -377,7 +377,6 @@ void vtime_task_switch(struct task_struct *prev)
}
}
-#ifdef CONFIG_NO_HZ_COMMON
/**
* vtime_reset - Fast forward vtime entry clocks
*
@@ -394,6 +393,7 @@ void vtime_reset(void)
#endif
}
+#ifdef CONFIG_NO_HZ_COMMON
/**
* vtime_dyntick_start - Inform vtime about entry to idle-dynticks
*
@@ -933,6 +933,7 @@ static void __init set_decrementer_max(void)
static void __init init_decrementer_clockevent(void)
{
register_decrementer_clockevent(smp_processor_id());
+ vtime_reset();
}
void secondary_cpu_time_init(void)
@@ -948,6 +949,7 @@ void secondary_cpu_time_init(void)
/* FIME: Should make unrelated change to move snapshot_timebase
* call here ! */
register_decrementer_clockevent(smp_processor_id());
+ vtime_reset();
}
/*
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 119/675] bpf, sockmap: Reject unhashed UDP sockets on sockmap update
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (117 preceding siblings ...)
2026-07-30 14:07 ` [PATCH 6.18 118/675] powerpc/vtime: Initialize starttime at boot for native accounting Greg Kroah-Hartman
@ 2026-07-30 14:07 ` Greg Kroah-Hartman
2026-07-30 14:07 ` [PATCH 6.18 120/675] drm/panthor: Check debugfs GEM lock initialization Greg Kroah-Hartman
` (560 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:07 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Kuniyuki Iwashima, Michal Luczaj,
Jakub Sitnicki, John Fastabend, Kumar Kartikeya Dwivedi,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Michal Luczaj <mhal@rbox.co>
[ Upstream commit 66efd3368ae10d05e08fbe6425b50fdec7186ac7 ]
UDP sockets get SOCK_RCU_FREE set when (auto-)bound. This means
sk_is_refcounted(unbound) = true, while sk_is_refcounted(bound) = false.
Because sockmap accepts unbound UDP sockets, a BPF program can increment a
socket's refcount via lookup. If the socket is subsequently bound, the
transition from unbound to bound causes bpf_sk_release() to skip the
decrement of the refcount, causing a memory leak.
unreferenced object 0xffff88810bc2eb40 (size 1984):
comm "test_progs", pid 2451, jiffies 4295320596
hex dump (first 32 bytes):
7f 00 00 01 7f 00 00 01 d2 04 1b b7 04 d2 00 00 ................
02 00 01 40 00 00 00 00 00 00 00 00 00 00 00 00 ...@............
backtrace (crc bdee079d):
kmem_cache_alloc_noprof+0x557/0x660
sk_prot_alloc+0x69/0x240
sk_alloc+0x30/0x460
inet_create+0x2ce/0xf80
__sock_create+0x25b/0x5c0
__sys_socket+0x119/0x1d0
__x64_sys_socket+0x72/0xd0
do_syscall_64+0xa1/0x5f0
entry_SYSCALL_64_after_hwframe+0x76/0x7e
Instead of special-casing for refcounted sockets, reject unhashed UDP
sockets during sockmap updates, as there is no benefit to supporting those.
This effectively reverts the commit under Fixes, with two exceptions:
1. sock_map_sk_state_allowed() maintains a fall-through `return true`.
2. In the spirit of commit b8b8315e39ff ("bpf, sockmap: Remove unhash
handler for BPF sockmap usage"), the proto::unhash BPF handler is not
reintroduced.
Historical note: this issue is related to commit 67312adc96b5 ("bpf: reject
unhashed sockets in bpf_sk_assign").
Fixes: 0c48eefae712 ("sock_map: Lift socket state restriction for datagram sockets")
Suggested-by: Kuniyuki Iwashima <kuniyu@google.com>
Signed-off-by: Michal Luczaj <mhal@rbox.co>
Reviewed-by: Kuniyuki Iwashima <kuniyu@google.com>
Reviewed-by: Jakub Sitnicki <jakub@cloudflare.com>
Reviewed-by: John Fastabend <john.fastabend@gmail.com>
Link: https://lore.kernel.org/bpf/20260707-sockmap-lookup-udp-leak-v4-2-f878346f27ab@rbox.co
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/core/sock_map.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/net/core/sock_map.c b/net/core/sock_map.c
index 5947b38e4f8b6f..70bbc78fb079f7 100644
--- a/net/core/sock_map.c
+++ b/net/core/sock_map.c
@@ -542,6 +542,8 @@ static bool sock_map_sk_state_allowed(const struct sock *sk)
{
if (sk_is_tcp(sk))
return (1 << sk->sk_state) & (TCPF_ESTABLISHED | TCPF_LISTEN);
+ if (sk_is_udp(sk))
+ return sk_hashed(sk);
if (sk_is_stream_unix(sk))
return (1 << sk->sk_state) & TCPF_ESTABLISHED;
if (sk_is_vsock(sk) &&
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 120/675] drm/panthor: Check debugfs GEM lock initialization
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (118 preceding siblings ...)
2026-07-30 14:07 ` [PATCH 6.18 119/675] bpf, sockmap: Reject unhashed UDP sockets on sockmap update Greg Kroah-Hartman
@ 2026-07-30 14:07 ` Greg Kroah-Hartman
2026-07-30 14:07 ` [PATCH 6.18 121/675] s390/checksum: Fix csum_partial() without vector facility Greg Kroah-Hartman
` (559 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:07 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Linmao Li, Liviu Dudau, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Linmao Li <lilinmao@kylinos.cn>
[ Upstream commit 022e901333c3054656a640794e842bab7af5a75c ]
drmm_mutex_init() can fail while registering the managed cleanup action.
When that happens, drmm_add_action_or_reset() destroys the mutex before
returning the error. Continuing initialization would therefore leave the
debugfs GEM object list with an unusable lock.
Propagate the error as is already done for the other managed mutexes in
panthor_device_init().
Fixes: a3707f53eb3f ("drm/panthor: show device-wide list of DRM GEM objects over DebugFS")
Signed-off-by: Linmao Li <lilinmao@kylinos.cn>
Reviewed-by: Liviu Dudau <liviu.dudau@arm.com>
Link: https://patch.msgid.link/20260713082912.321021-1-lilinmao@kylinos.cn
Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/panthor/panthor_device.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/panthor/panthor_device.c b/drivers/gpu/drm/panthor/panthor_device.c
index 962a10e00848ef..cdf82d83de7abe 100644
--- a/drivers/gpu/drm/panthor/panthor_device.c
+++ b/drivers/gpu/drm/panthor/panthor_device.c
@@ -182,7 +182,10 @@ int panthor_device_init(struct panthor_device *ptdev)
return ret;
#ifdef CONFIG_DEBUG_FS
- drmm_mutex_init(&ptdev->base, &ptdev->gems.lock);
+ ret = drmm_mutex_init(&ptdev->base, &ptdev->gems.lock);
+ if (ret)
+ return ret;
+
INIT_LIST_HEAD(&ptdev->gems.node);
#endif
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 121/675] s390/checksum: Fix csum_partial() without vector facility
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (119 preceding siblings ...)
2026-07-30 14:07 ` [PATCH 6.18 120/675] drm/panthor: Check debugfs GEM lock initialization Greg Kroah-Hartman
@ 2026-07-30 14:07 ` Greg Kroah-Hartman
2026-07-30 14:07 ` [PATCH 6.18 122/675] riscv: hwprobe: Avoid uninitialized read in hwprobe_get_cpus() Greg Kroah-Hartman
` (558 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:07 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Heiko Carstens, Vasily Gorbik,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Vasily Gorbik <gor@linux.ibm.com>
[ Upstream commit 4bb06b60d982355e22647b3d12d6619419f8c1fa ]
Currently csum_partial() calls csum_copy() with copy=false and dst=NULL.
On machines without the vector facility, csum_copy() falls back to
cksm(dst, ...), causing the checksum to be calculated from address zero
instead of the source buffer.
The VX implementation already checksums data loaded from src. Make the
fallback do the same by passing src to cksm().
Fixes: dcd3e1de9d17 ("s390/checksum: provide csum_partial_copy_nocheck()")
Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
arch/s390/lib/csum-partial.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/s390/lib/csum-partial.c b/arch/s390/lib/csum-partial.c
index 458abd9bac7025..9d74ceff136c54 100644
--- a/arch/s390/lib/csum-partial.c
+++ b/arch/s390/lib/csum-partial.c
@@ -23,7 +23,7 @@ static __always_inline __wsum csum_copy(void *dst, const void *src, int len, __w
if (!cpu_has_vx()) {
if (copy)
memcpy(dst, src, len);
- return cksm(dst, len, sum);
+ return cksm(src, len, sum);
}
kernel_fpu_begin(&vxstate, KERNEL_VXR_V16V23);
fpu_vlvgf(16, (__force u32)sum, 1);
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 122/675] riscv: hwprobe: Avoid uninitialized read in hwprobe_get_cpus()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (120 preceding siblings ...)
2026-07-30 14:07 ` [PATCH 6.18 121/675] s390/checksum: Fix csum_partial() without vector facility Greg Kroah-Hartman
@ 2026-07-30 14:07 ` Greg Kroah-Hartman
2026-07-30 14:07 ` [PATCH 6.18 123/675] can: j1939: fix lockless local-destination check Greg Kroah-Hartman
` (557 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:07 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Mark Harris, Nam Cao,
Michael Ellerman, Paul Walmsley, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Mark Harris <mark.hsj@gmail.com>
[ Upstream commit 5caae1deee89a6582c761d5dcd4b924b744426cc ]
When cpusetsize < cpumask_size(), hwprobe_get_cpus() did not fully
initialize its copy of the cpu mask, which could cause non-deterministic
results from the riscv_hwprobe syscall on a system with more than 8 CPUs
when the supplied cpu mask is empty. Address this by fully initializing
the cpu mask.
Fixes: e178bf146e4b ("RISC-V: hwprobe: Introduce which-cpus flag")
Signed-off-by: Mark Harris <mark.hsj@gmail.com>
Reviewed-by: Nam Cao <namcao@linutronix.de>
Reviewed-by: Michael Ellerman <mpe@kernel.org>
Link: https://patch.msgid.link/20260714003056.73707-1-mark.hsj@gmail.com
Signed-off-by: Paul Walmsley <pjw@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
arch/riscv/kernel/sys_hwprobe.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/riscv/kernel/sys_hwprobe.c b/arch/riscv/kernel/sys_hwprobe.c
index 199d13f86f3135..460fb297672e68 100644
--- a/arch/riscv/kernel/sys_hwprobe.c
+++ b/arch/riscv/kernel/sys_hwprobe.c
@@ -409,6 +409,7 @@ static int hwprobe_get_cpus(struct riscv_hwprobe __user *pairs,
if (cpusetsize > cpumask_size())
cpusetsize = cpumask_size();
+ cpumask_clear(&cpus);
ret = copy_from_user(&cpus, cpus_user, cpusetsize);
if (ret)
return -EFAULT;
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 123/675] can: j1939: fix lockless local-destination check
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (121 preceding siblings ...)
2026-07-30 14:07 ` [PATCH 6.18 122/675] riscv: hwprobe: Avoid uninitialized read in hwprobe_get_cpus() Greg Kroah-Hartman
@ 2026-07-30 14:07 ` Greg Kroah-Hartman
2026-07-30 14:07 ` [PATCH 6.18 124/675] drm/xe: Allow the caller to pass guc_buf_cache size Greg Kroah-Hartman
` (556 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:07 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Shuhao Fu, Oleksij Rempel,
Marc Kleine-Budde, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Shuhao Fu <sfual@cse.ust.hk>
[ Upstream commit e4e8af62adab2fdcca230006f829407a953070cd ]
j1939_priv.ents[].nusers is documented as protected by priv->lock, and
its updates already happen under that lock. j1939_can_recv() also reads
it under read_lock_bh(). However, j1939_session_skb_queue() and
j1939_tp_send() still read priv->ents[da].nusers without taking the
lock.
Those transport-side checks decide whether to set J1939_ECU_LOCAL_DST, so
they can race with j1939_local_ecu_get() and j1939_local_ecu_put() while
userspace is binding or releasing sockets concurrently with TP traffic.
This can misclassify TP/ETP sessions as local or remote and take the wrong
transport path.
Fix both transport paths by routing the destination-locality check through
a helper that reads ents[].nusers under read_lock_bh(&priv->lock).
Fixes: 9d71dd0c7009 ("can: add support of SAE J1939 protocol")
Signed-off-by: Shuhao Fu <sfual@cse.ust.hk>
Tested-by: Oleksij Rempel <o.rempel@pengutronix.de>
Acked-by: Oleksij Rempel <o.rempel@pengutronix.de>
Link: https://patch.msgid.link/20260419140614.GA4041240@chcpu16
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/can/j1939/transport.c | 18 ++++++++++++++----
1 file changed, 14 insertions(+), 4 deletions(-)
diff --git a/net/can/j1939/transport.c b/net/can/j1939/transport.c
index 8656ab388c83e6..9ec929bc0c0da4 100644
--- a/net/can/j1939/transport.c
+++ b/net/can/j1939/transport.c
@@ -350,6 +350,18 @@ static void j1939_session_skb_drop_old(struct j1939_session *session)
}
}
+static bool j1939_address_is_local(struct j1939_priv *priv, u8 addr)
+{
+ bool local = false;
+
+ read_lock_bh(&priv->lock);
+ if (j1939_address_is_unicast(addr) && priv->ents[addr].nusers)
+ local = true;
+ read_unlock_bh(&priv->lock);
+
+ return local;
+}
+
void j1939_session_skb_queue(struct j1939_session *session,
struct sk_buff *skb)
{
@@ -358,8 +370,7 @@ void j1939_session_skb_queue(struct j1939_session *session,
j1939_ac_fixup(priv, skb);
- if (j1939_address_is_unicast(skcb->addr.da) &&
- priv->ents[skcb->addr.da].nusers)
+ if (j1939_address_is_local(priv, skcb->addr.da))
skcb->flags |= J1939_ECU_LOCAL_DST;
skcb->flags |= J1939_ECU_LOCAL_SRC;
@@ -2017,8 +2028,7 @@ struct j1939_session *j1939_tp_send(struct j1939_priv *priv,
return ERR_PTR(ret);
/* fix DST flags, it may be used there soon */
- if (j1939_address_is_unicast(skcb->addr.da) &&
- priv->ents[skcb->addr.da].nusers)
+ if (j1939_address_is_local(priv, skcb->addr.da))
skcb->flags |= J1939_ECU_LOCAL_DST;
/* src is always local, I'm sending ... */
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 124/675] drm/xe: Allow the caller to pass guc_buf_cache size
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (122 preceding siblings ...)
2026-07-30 14:07 ` [PATCH 6.18 123/675] can: j1939: fix lockless local-destination check Greg Kroah-Hartman
@ 2026-07-30 14:07 ` Greg Kroah-Hartman
2026-07-30 14:07 ` [PATCH 6.18 125/675] drm/xe/sa: Shadow buffer support in the sub-allocator pool Greg Kroah-Hartman
` (555 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:07 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Michal Wajdeczko,
Michał Winiarski, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Michał Winiarski <michal.winiarski@intel.com>
[ Upstream commit dca2701a6277399f9d255f09b4c34d9a7171c09b ]
An upcoming change will use GuC buffer cache as a place where GuC
migration data will be stored, and the memory requirement for that is
larger than indirect data.
Allow the caller to pass the size based on the intended usecase.
Reviewed-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Link: https://patch.msgid.link/20251112132220.516975-12-michal.winiarski@intel.com
Signed-off-by: Michał Winiarski <michal.winiarski@intel.com>
Stable-dep-of: 56441f9e08ad ("drm/xe/vf: Fix VF CCS attach/detach race with in-flight BO moves")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/xe/xe_guc_buf.c | 44 ++++++++++++++++++++++++---------
drivers/gpu/drm/xe/xe_guc_buf.h | 1 +
2 files changed, 34 insertions(+), 11 deletions(-)
diff --git a/drivers/gpu/drm/xe/xe_guc_buf.c b/drivers/gpu/drm/xe/xe_guc_buf.c
index 502ca3a4ee6064..989c546d05689d 100644
--- a/drivers/gpu/drm/xe/xe_guc_buf.c
+++ b/drivers/gpu/drm/xe/xe_guc_buf.c
@@ -13,6 +13,8 @@
#include "xe_guc_buf.h"
#include "xe_sa.h"
+#define XE_GUC_BUF_CACHE_DEFAULT_SIZE SZ_8K
+
static struct xe_guc *cache_to_guc(struct xe_guc_buf_cache *cache)
{
return container_of(cache, struct xe_guc, buf);
@@ -23,21 +25,12 @@ static struct xe_gt *cache_to_gt(struct xe_guc_buf_cache *cache)
return guc_to_gt(cache_to_guc(cache));
}
-/**
- * xe_guc_buf_cache_init() - Initialize the GuC Buffer Cache.
- * @cache: the &xe_guc_buf_cache to initialize
- *
- * The Buffer Cache allows to obtain a reusable buffer that can be used to pass
- * indirect H2G data to GuC without a need to create a ad-hoc allocation.
- *
- * Return: 0 on success or a negative error code on failure.
- */
-int xe_guc_buf_cache_init(struct xe_guc_buf_cache *cache)
+static int guc_buf_cache_init(struct xe_guc_buf_cache *cache, u32 size)
{
struct xe_gt *gt = cache_to_gt(cache);
struct xe_sa_manager *sam;
- sam = __xe_sa_bo_manager_init(gt_to_tile(gt), SZ_8K, 0, sizeof(u32));
+ sam = __xe_sa_bo_manager_init(gt_to_tile(gt), size, 0, sizeof(u32));
if (IS_ERR(sam))
return PTR_ERR(sam);
cache->sam = sam;
@@ -48,6 +41,35 @@ int xe_guc_buf_cache_init(struct xe_guc_buf_cache *cache)
return 0;
}
+/**
+ * xe_guc_buf_cache_init() - Initialize the GuC Buffer Cache.
+ * @cache: the &xe_guc_buf_cache to initialize
+ *
+ * The Buffer Cache allows to obtain a reusable buffer that can be used to pass
+ * data to GuC or read data from GuC without a need to create a ad-hoc allocation.
+ *
+ * Return: 0 on success or a negative error code on failure.
+ */
+int xe_guc_buf_cache_init(struct xe_guc_buf_cache *cache)
+{
+ return guc_buf_cache_init(cache, XE_GUC_BUF_CACHE_DEFAULT_SIZE);
+}
+
+/**
+ * xe_guc_buf_cache_init_with_size() - Initialize the GuC Buffer Cache.
+ * @cache: the &xe_guc_buf_cache to initialize
+ * @size: size in bytes
+ *
+ * Like xe_guc_buf_cache_init(), except it allows the caller to make the cache
+ * buffer larger, allowing to accommodate larger objects.
+ *
+ * Return: 0 on success or a negative error code on failure.
+ */
+int xe_guc_buf_cache_init_with_size(struct xe_guc_buf_cache *cache, u32 size)
+{
+ return guc_buf_cache_init(cache, max(XE_GUC_BUF_CACHE_DEFAULT_SIZE, size));
+}
+
/**
* xe_guc_buf_cache_dwords() - Number of dwords the GuC Buffer Cache supports.
* @cache: the &xe_guc_buf_cache to query
diff --git a/drivers/gpu/drm/xe/xe_guc_buf.h b/drivers/gpu/drm/xe/xe_guc_buf.h
index 0d67604d96bdd7..8204e589625013 100644
--- a/drivers/gpu/drm/xe/xe_guc_buf.h
+++ b/drivers/gpu/drm/xe/xe_guc_buf.h
@@ -12,6 +12,7 @@
#include "xe_guc_buf_types.h"
int xe_guc_buf_cache_init(struct xe_guc_buf_cache *cache);
+int xe_guc_buf_cache_init_with_size(struct xe_guc_buf_cache *cache, u32 size);
u32 xe_guc_buf_cache_dwords(struct xe_guc_buf_cache *cache);
struct xe_guc_buf xe_guc_buf_reserve(struct xe_guc_buf_cache *cache, u32 dwords);
struct xe_guc_buf xe_guc_buf_from_data(struct xe_guc_buf_cache *cache,
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 125/675] drm/xe/sa: Shadow buffer support in the sub-allocator pool
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (123 preceding siblings ...)
2026-07-30 14:07 ` [PATCH 6.18 124/675] drm/xe: Allow the caller to pass guc_buf_cache size Greg Kroah-Hartman
@ 2026-07-30 14:07 ` Greg Kroah-Hartman
2026-07-30 14:07 ` [PATCH 6.18 126/675] drm/xe/vf: Shadow buffer management for CCS read/write operations Greg Kroah-Hartman
` (554 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:07 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Satyanarayana K V P, Matthew Brost,
Michal Wajdeczko, Matthew Auld, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Satyanarayana K V P <satyanarayana.k.v.p@intel.com>
[ Upstream commit 1f2cf5295cdba71818288c9e495b4ef5097565ed ]
The existing sub-allocator is limited to managing a single buffer object.
This enhancement introduces shadow buffer functionality to support
scenarios requiring dual buffer management.
The changes include added shadow buffer object creation capability,
Management for both primary and shadow buffers, and appropriate locking
mechanisms for thread-safe operations.
This enables more flexible buffer allocation strategies in scenarios where
shadow buffering is required.
Signed-off-by: Satyanarayana K V P <satyanarayana.k.v.p@intel.com>
Suggested-by: Matthew Brost <matthew.brost@intel.com>
Cc: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Matthew Auld <matthew.auld@intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Link: https://patch.msgid.link/20251118120745.3460172-2-satyanarayana.k.v.p@intel.com
Stable-dep-of: 56441f9e08ad ("drm/xe/vf: Fix VF CCS attach/detach race with in-flight BO moves")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/xe/xe_guc_buf.c | 2 +-
drivers/gpu/drm/xe/xe_sa.c | 67 +++++++++++++++++++++++++++-
drivers/gpu/drm/xe/xe_sa.h | 20 ++++++++-
drivers/gpu/drm/xe/xe_sa_types.h | 3 ++
drivers/gpu/drm/xe/xe_sriov_vf_ccs.c | 3 ++
5 files changed, 91 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/xe/xe_guc_buf.c b/drivers/gpu/drm/xe/xe_guc_buf.c
index 989c546d05689d..3de6377ae2d521 100644
--- a/drivers/gpu/drm/xe/xe_guc_buf.c
+++ b/drivers/gpu/drm/xe/xe_guc_buf.c
@@ -30,7 +30,7 @@ static int guc_buf_cache_init(struct xe_guc_buf_cache *cache, u32 size)
struct xe_gt *gt = cache_to_gt(cache);
struct xe_sa_manager *sam;
- sam = __xe_sa_bo_manager_init(gt_to_tile(gt), size, 0, sizeof(u32));
+ sam = __xe_sa_bo_manager_init(gt_to_tile(gt), size, 0, sizeof(u32), 0);
if (IS_ERR(sam))
return PTR_ERR(sam);
cache->sam = sam;
diff --git a/drivers/gpu/drm/xe/xe_sa.c b/drivers/gpu/drm/xe/xe_sa.c
index fedd017d6dd36a..d9e0d30f8135e9 100644
--- a/drivers/gpu/drm/xe/xe_sa.c
+++ b/drivers/gpu/drm/xe/xe_sa.c
@@ -29,6 +29,7 @@ static void xe_sa_bo_manager_fini(struct drm_device *drm, void *arg)
kvfree(sa_manager->cpu_ptr);
sa_manager->bo = NULL;
+ sa_manager->shadow = NULL;
}
/**
@@ -37,12 +38,14 @@ static void xe_sa_bo_manager_fini(struct drm_device *drm, void *arg)
* @size: number of bytes to allocate
* @guard: number of bytes to exclude from suballocations
* @align: alignment for each suballocated chunk
+ * @flags: flags for suballocator
*
* Prepares the suballocation manager for suballocations.
*
* Return: a pointer to the &xe_sa_manager or an ERR_PTR on failure.
*/
-struct xe_sa_manager *__xe_sa_bo_manager_init(struct xe_tile *tile, u32 size, u32 guard, u32 align)
+struct xe_sa_manager *__xe_sa_bo_manager_init(struct xe_tile *tile, u32 size,
+ u32 guard, u32 align, u32 flags)
{
struct xe_device *xe = tile_to_xe(tile);
struct xe_sa_manager *sa_manager;
@@ -79,6 +82,26 @@ struct xe_sa_manager *__xe_sa_bo_manager_init(struct xe_tile *tile, u32 size, u3
memset(sa_manager->cpu_ptr, 0, bo->ttm.base.size);
}
+ if (flags & XE_SA_BO_MANAGER_FLAG_SHADOW) {
+ struct xe_bo *shadow;
+
+ ret = drmm_mutex_init(&xe->drm, &sa_manager->swap_guard);
+ if (ret)
+ return ERR_PTR(ret);
+
+ shadow = xe_managed_bo_create_pin_map(xe, tile, size,
+ XE_BO_FLAG_VRAM_IF_DGFX(tile) |
+ XE_BO_FLAG_GGTT |
+ XE_BO_FLAG_GGTT_INVALIDATE |
+ XE_BO_FLAG_PINNED_NORESTORE);
+ if (IS_ERR(shadow)) {
+ drm_err(&xe->drm, "Failed to prepare %uKiB BO for SA manager (%pe)\n",
+ size / SZ_1K, shadow);
+ return ERR_CAST(shadow);
+ }
+ sa_manager->shadow = shadow;
+ }
+
drm_suballoc_manager_init(&sa_manager->base, managed_size, align);
ret = drmm_add_action_or_reset(&xe->drm, xe_sa_bo_manager_fini,
sa_manager);
@@ -88,6 +111,48 @@ struct xe_sa_manager *__xe_sa_bo_manager_init(struct xe_tile *tile, u32 size, u3
return sa_manager;
}
+/**
+ * xe_sa_bo_swap_shadow() - Swap the SA BO with shadow BO.
+ * @sa_manager: the XE sub allocator manager
+ *
+ * Swaps the sub-allocator primary buffer object with shadow buffer object.
+ *
+ * Return: None.
+ */
+void xe_sa_bo_swap_shadow(struct xe_sa_manager *sa_manager)
+{
+ struct xe_device *xe = tile_to_xe(sa_manager->bo->tile);
+
+ xe_assert(xe, sa_manager->shadow);
+ lockdep_assert_held(&sa_manager->swap_guard);
+
+ swap(sa_manager->bo, sa_manager->shadow);
+ if (!sa_manager->bo->vmap.is_iomem)
+ sa_manager->cpu_ptr = sa_manager->bo->vmap.vaddr;
+}
+
+/**
+ * xe_sa_bo_sync_shadow() - Sync the SA Shadow BO with primary BO.
+ * @sa_bo: the sub-allocator buffer object.
+ *
+ * Synchronize sub-allocator shadow buffer object with primary buffer object.
+ *
+ * Return: None.
+ */
+void xe_sa_bo_sync_shadow(struct drm_suballoc *sa_bo)
+{
+ struct xe_sa_manager *sa_manager = to_xe_sa_manager(sa_bo->manager);
+ struct xe_device *xe = tile_to_xe(sa_manager->bo->tile);
+
+ xe_assert(xe, sa_manager->shadow);
+ lockdep_assert_held(&sa_manager->swap_guard);
+
+ xe_map_memcpy_to(xe, &sa_manager->shadow->vmap,
+ drm_suballoc_soffset(sa_bo),
+ xe_sa_bo_cpu_addr(sa_bo),
+ drm_suballoc_size(sa_bo));
+}
+
/**
* __xe_sa_bo_new() - Make a suballocation but use custom gfp flags.
* @sa_manager: the &xe_sa_manager
diff --git a/drivers/gpu/drm/xe/xe_sa.h b/drivers/gpu/drm/xe/xe_sa.h
index 99dbf0eea54025..90ffa93a000ce4 100644
--- a/drivers/gpu/drm/xe/xe_sa.h
+++ b/drivers/gpu/drm/xe/xe_sa.h
@@ -14,12 +14,14 @@
struct dma_fence;
struct xe_tile;
-struct xe_sa_manager *__xe_sa_bo_manager_init(struct xe_tile *tile, u32 size, u32 guard, u32 align);
+#define XE_SA_BO_MANAGER_FLAG_SHADOW BIT(0)
+struct xe_sa_manager *__xe_sa_bo_manager_init(struct xe_tile *tile, u32 size,
+ u32 guard, u32 align, u32 flags);
struct drm_suballoc *__xe_sa_bo_new(struct xe_sa_manager *sa_manager, u32 size, gfp_t gfp);
static inline struct xe_sa_manager *xe_sa_bo_manager_init(struct xe_tile *tile, u32 size, u32 align)
{
- return __xe_sa_bo_manager_init(tile, size, SZ_4K, align);
+ return __xe_sa_bo_manager_init(tile, size, SZ_4K, align, 0);
}
/**
@@ -68,4 +70,18 @@ static inline void *xe_sa_bo_cpu_addr(struct drm_suballoc *sa)
drm_suballoc_soffset(sa);
}
+void xe_sa_bo_swap_shadow(struct xe_sa_manager *sa_manager);
+void xe_sa_bo_sync_shadow(struct drm_suballoc *sa_bo);
+
+/**
+ * xe_sa_bo_swap_guard() - Retrieve the SA BO swap guard within sub-allocator.
+ * @sa_manager: the &xe_sa_manager
+ *
+ * Return: Sub alloctor swap guard mutex.
+ */
+static inline struct mutex *xe_sa_bo_swap_guard(struct xe_sa_manager *sa_manager)
+{
+ return &sa_manager->swap_guard;
+}
+
#endif
diff --git a/drivers/gpu/drm/xe/xe_sa_types.h b/drivers/gpu/drm/xe/xe_sa_types.h
index cb7238799dcb20..1085c9c37d6b61 100644
--- a/drivers/gpu/drm/xe/xe_sa_types.h
+++ b/drivers/gpu/drm/xe/xe_sa_types.h
@@ -12,6 +12,9 @@ struct xe_bo;
struct xe_sa_manager {
struct drm_suballoc_manager base;
struct xe_bo *bo;
+ struct xe_bo *shadow;
+ /** @swap_guard: Timeline guard updating @bo and @shadow */
+ struct mutex swap_guard;
void *cpu_ptr;
bool is_iomem;
};
diff --git a/drivers/gpu/drm/xe/xe_sriov_vf_ccs.c b/drivers/gpu/drm/xe/xe_sriov_vf_ccs.c
index 739a3eb180b53c..1a7d767632dadf 100644
--- a/drivers/gpu/drm/xe/xe_sriov_vf_ccs.c
+++ b/drivers/gpu/drm/xe/xe_sriov_vf_ccs.c
@@ -160,9 +160,12 @@ static int alloc_bb_pool(struct xe_tile *tile, struct xe_sriov_vf_ccs_ctx *ctx)
offset = 0;
xe_map_memset(xe, &sa_manager->bo->vmap, offset, MI_NOOP,
bb_pool_size);
+ xe_map_memset(xe, &sa_manager->shadow->vmap, offset, MI_NOOP,
+ bb_pool_size);
offset = bb_pool_size - sizeof(u32);
xe_map_wr(xe, &sa_manager->bo->vmap, offset, u32, MI_BATCH_BUFFER_END);
+ xe_map_wr(xe, &sa_manager->shadow->vmap, offset, u32, MI_BATCH_BUFFER_END);
ctx->mem.ccs_bb_pool = sa_manager;
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 126/675] drm/xe/vf: Shadow buffer management for CCS read/write operations
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (124 preceding siblings ...)
2026-07-30 14:07 ` [PATCH 6.18 125/675] drm/xe/sa: Shadow buffer support in the sub-allocator pool Greg Kroah-Hartman
@ 2026-07-30 14:07 ` Greg Kroah-Hartman
2026-07-30 14:07 ` [PATCH 6.18 127/675] drm/xe/vf: Fix VF CCS attach/detach race with in-flight BO moves Greg Kroah-Hartman
` (553 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:07 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Satyanarayana K V P, Matthew Brost,
Michal Wajdeczko, Matthew Auld, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Satyanarayana K V P <satyanarayana.k.v.p@intel.com>
[ Upstream commit fa18290bf0723b02bfa8d30d2e14722f0d096c2c ]
CCS copy command consist of 5-dword sequence. If vCPU halts during
save/restore operations while these sequences are being programmed,
incomplete writes can cause page faults during IGPU CCS metadata saving.
Use shadow buffer management to prevent partial write issues during CCS
operations.
Signed-off-by: Satyanarayana K V P <satyanarayana.k.v.p@intel.com>
Suggested-by: Matthew Brost <matthew.brost@intel.com>
Cc: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Matthew Auld <matthew.auld@intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Link: https://patch.msgid.link/20251118120745.3460172-3-satyanarayana.k.v.p@intel.com
Stable-dep-of: 56441f9e08ad ("drm/xe/vf: Fix VF CCS attach/detach race with in-flight BO moves")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/xe/xe_migrate.c | 57 ++++++++++++++++++++++++++--
drivers/gpu/drm/xe/xe_migrate.h | 3 ++
drivers/gpu/drm/xe/xe_sriov_vf_ccs.c | 19 ++++++++--
drivers/gpu/drm/xe/xe_sriov_vf_ccs.h | 1 +
4 files changed, 73 insertions(+), 7 deletions(-)
diff --git a/drivers/gpu/drm/xe/xe_migrate.c b/drivers/gpu/drm/xe/xe_migrate.c
index b6905f35d6c81f..6a0c088d09fb33 100644
--- a/drivers/gpu/drm/xe/xe_migrate.c
+++ b/drivers/gpu/drm/xe/xe_migrate.c
@@ -33,6 +33,7 @@
#include "xe_res_cursor.h"
#include "xe_sa.h"
#include "xe_sched_job.h"
+#include "xe_sriov_vf_ccs.h"
#include "xe_sync.h"
#include "xe_trace_bo.h"
#include "xe_validation.h"
@@ -1022,12 +1023,16 @@ int xe_migrate_ccs_rw_copy(struct xe_tile *tile, struct xe_exec_queue *q,
u32 batch_size, batch_size_allocated;
struct xe_device *xe = gt_to_xe(gt);
struct xe_res_cursor src_it, ccs_it;
+ struct xe_sriov_vf_ccs_ctx *ctx;
+ struct xe_sa_manager *bb_pool;
u64 size = xe_bo_size(src_bo);
struct xe_bb *bb = NULL;
u64 src_L0, src_L0_ofs;
u32 src_L0_pt;
int err;
+ ctx = &xe->sriov.vf.ccs.contexts[read_write];
+
xe_res_first_sg(xe_bo_sg(src_bo), 0, size, &src_it);
xe_res_first_sg(xe_bo_sg(src_bo), xe_bo_ccs_pages_start(src_bo),
@@ -1060,11 +1065,15 @@ int xe_migrate_ccs_rw_copy(struct xe_tile *tile, struct xe_exec_queue *q,
size -= src_L0;
}
+ bb_pool = ctx->mem.ccs_bb_pool;
+ guard(mutex) (xe_sa_bo_swap_guard(bb_pool));
+ xe_sa_bo_swap_shadow(bb_pool);
+
bb = xe_bb_ccs_new(gt, batch_size, read_write);
if (IS_ERR(bb)) {
drm_err(&xe->drm, "BB allocation failed.\n");
err = PTR_ERR(bb);
- goto err_ret;
+ return err;
}
batch_size_allocated = batch_size;
@@ -1113,10 +1122,52 @@ int xe_migrate_ccs_rw_copy(struct xe_tile *tile, struct xe_exec_queue *q,
xe_assert(xe, (batch_size_allocated == bb->len));
src_bo->bb_ccs[read_write] = bb;
+ xe_sriov_vf_ccs_rw_update_bb_addr(ctx);
+ xe_sa_bo_sync_shadow(bb->bo);
return 0;
+}
-err_ret:
- return err;
+/**
+ * xe_migrate_ccs_rw_copy_clear() - Clear the CCS read/write batch buffer
+ * content.
+ * @src_bo: The buffer object @src is currently bound to.
+ * @read_write : Creates BB commands for CCS read/write.
+ *
+ * Directly clearing the BB lacks atomicity and can lead to undefined
+ * behavior if the vCPU is halted mid-operation during the clearing
+ * process. To avoid this issue, we use a shadow buffer object approach.
+ *
+ * First swap the SA BO address with the shadow BO, perform the clearing
+ * operation on the BB, update the shadow BO in the ring buffer, then
+ * sync the shadow and the actual buffer to maintain consistency.
+ *
+ * Returns: None.
+ */
+void xe_migrate_ccs_rw_copy_clear(struct xe_bo *src_bo,
+ enum xe_sriov_vf_ccs_rw_ctxs read_write)
+{
+ struct xe_bb *bb = src_bo->bb_ccs[read_write];
+ struct xe_device *xe = xe_bo_device(src_bo);
+ struct xe_sriov_vf_ccs_ctx *ctx;
+ struct xe_sa_manager *bb_pool;
+ u32 *cs;
+
+ xe_assert(xe, IS_SRIOV_VF(xe));
+
+ ctx = &xe->sriov.vf.ccs.contexts[read_write];
+ bb_pool = ctx->mem.ccs_bb_pool;
+
+ guard(mutex) (xe_sa_bo_swap_guard(bb_pool));
+ xe_sa_bo_swap_shadow(bb_pool);
+
+ cs = xe_sa_bo_cpu_addr(bb->bo);
+ memset(cs, MI_NOOP, bb->len * sizeof(u32));
+ xe_sriov_vf_ccs_rw_update_bb_addr(ctx);
+
+ xe_sa_bo_sync_shadow(bb->bo);
+
+ xe_bb_free(bb, NULL);
+ src_bo->bb_ccs[read_write] = NULL;
}
/**
diff --git a/drivers/gpu/drm/xe/xe_migrate.h b/drivers/gpu/drm/xe/xe_migrate.h
index bc55f650204b83..438c3bb66d9b24 100644
--- a/drivers/gpu/drm/xe/xe_migrate.h
+++ b/drivers/gpu/drm/xe/xe_migrate.h
@@ -131,6 +131,9 @@ int xe_migrate_ccs_rw_copy(struct xe_tile *tile, struct xe_exec_queue *q,
struct xe_bo *src_bo,
enum xe_sriov_vf_ccs_rw_ctxs read_write);
+void xe_migrate_ccs_rw_copy_clear(struct xe_bo *src_bo,
+ enum xe_sriov_vf_ccs_rw_ctxs read_write);
+
struct xe_lrc *xe_migrate_lrc(struct xe_migrate *migrate);
struct xe_exec_queue *xe_migrate_exec_queue(struct xe_migrate *migrate);
int xe_migrate_access_memory(struct xe_migrate *m, struct xe_bo *bo,
diff --git a/drivers/gpu/drm/xe/xe_sriov_vf_ccs.c b/drivers/gpu/drm/xe/xe_sriov_vf_ccs.c
index 1a7d767632dadf..d62156195f321b 100644
--- a/drivers/gpu/drm/xe/xe_sriov_vf_ccs.c
+++ b/drivers/gpu/drm/xe/xe_sriov_vf_ccs.c
@@ -148,7 +148,8 @@ static int alloc_bb_pool(struct xe_tile *tile, struct xe_sriov_vf_ccs_ctx *ctx)
xe_sriov_info(xe, "Allocating %s CCS BB pool size = %lldMB\n",
ctx->ctx_id ? "Restore" : "Save", bb_pool_size / SZ_1M);
- sa_manager = xe_sa_bo_manager_init(tile, bb_pool_size, SZ_16);
+ sa_manager = __xe_sa_bo_manager_init(tile, bb_pool_size, SZ_4K, SZ_16,
+ XE_SA_BO_MANAGER_FLAG_SHADOW);
if (IS_ERR(sa_manager)) {
xe_sriov_err(xe, "Suballocator init failed with error: %pe\n",
@@ -314,6 +315,18 @@ int xe_sriov_vf_ccs_init(struct xe_device *xe)
return err;
}
+#define XE_SRIOV_VF_CCS_RW_BB_ADDR_OFFSET (2 * sizeof(u32))
+void xe_sriov_vf_ccs_rw_update_bb_addr(struct xe_sriov_vf_ccs_ctx *ctx)
+{
+ u64 addr = xe_sa_manager_gpu_addr(ctx->mem.ccs_bb_pool);
+ struct xe_lrc *lrc = xe_exec_queue_lrc(ctx->mig_q);
+ struct xe_device *xe = gt_to_xe(ctx->mig_q->gt);
+
+ xe_device_wmb(xe);
+ xe_map_wr(xe, &lrc->bo->vmap, XE_SRIOV_VF_CCS_RW_BB_ADDR_OFFSET, u32, addr);
+ xe_device_wmb(xe);
+}
+
/**
* xe_sriov_vf_ccs_attach_bo - Insert CCS read write commands in the BO.
* @bo: the &buffer object to which batch buffer commands will be added.
@@ -374,9 +387,7 @@ int xe_sriov_vf_ccs_detach_bo(struct xe_bo *bo)
if (!bb)
continue;
- memset(bb->cs, MI_NOOP, bb->len * sizeof(u32));
- xe_bb_free(bb, NULL);
- bo->bb_ccs[ctx_id] = NULL;
+ xe_migrate_ccs_rw_copy_clear(bo, ctx_id);
}
return 0;
}
diff --git a/drivers/gpu/drm/xe/xe_sriov_vf_ccs.h b/drivers/gpu/drm/xe/xe_sriov_vf_ccs.h
index 0745c0ff022828..a9c6512f87034f 100644
--- a/drivers/gpu/drm/xe/xe_sriov_vf_ccs.h
+++ b/drivers/gpu/drm/xe/xe_sriov_vf_ccs.h
@@ -19,6 +19,7 @@ int xe_sriov_vf_ccs_attach_bo(struct xe_bo *bo);
int xe_sriov_vf_ccs_detach_bo(struct xe_bo *bo);
int xe_sriov_vf_ccs_register_context(struct xe_device *xe);
void xe_sriov_vf_ccs_print(struct xe_device *xe, struct drm_printer *p);
+void xe_sriov_vf_ccs_rw_update_bb_addr(struct xe_sriov_vf_ccs_ctx *ctx);
static inline bool xe_sriov_vf_ccs_ready(struct xe_device *xe)
{
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 127/675] drm/xe/vf: Fix VF CCS attach/detach race with in-flight BO moves
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (125 preceding siblings ...)
2026-07-30 14:07 ` [PATCH 6.18 126/675] drm/xe/vf: Shadow buffer management for CCS read/write operations Greg Kroah-Hartman
@ 2026-07-30 14:07 ` Greg Kroah-Hartman
2026-07-30 14:07 ` [PATCH 6.18 128/675] drm/xe/wopcm: fix WOPCM size for LNL+ Greg Kroah-Hartman
` (552 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:07 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Michal Wajdeczko, Matthew Auld,
Michał Winiarski, Satyanarayana K V P, Matthew Brost,
Thomas Hellström, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Matthew Brost <matthew.brost@intel.com>
[ Upstream commit 56441f9e08ad68697295b8835266d2bc48ab59b5 ]
xe_bo_move() attaches VF CCS read/write batch buffers (BBs) to a BO
after it transitions NULL/SYSTEM -> TT, and detaches them after it
transitions TT -> SYSTEM. Both operations were done synchronously on
the CPU immediately after building the move's copy/clear fence,
without waiting for that fence to signal. This creates two races with
VF migration:
- Attach happens too late relative to the copy job it is meant to
protect. If the copy job is submitted before the CCS BBs are
attached, a VF migration event that pauses execution mid-copy can
observe partially copied CCS metadata without the attach state
needed to correctly save/restore it.
- Detach happens too early relative to the copy job that moves data
out of TT. The CCS BBs are torn down right after the copy fence is
obtained, while the actual blit may still be in flight. A VF
migration event that pauses execution mid-copy can then race the
save/restore path against the still-running blit, and the CCS BBs
it would need to make sense of the paused state have already been
removed.
Fix both races:
- Move the attach call to before the copy/clear job is submitted, so
the CCS BBs are already registered by the time the copy runs. On
attach failure, unwind and bail out of the move. xe_migrate_ccs_rw_copy()
now takes the destination resource explicitly, since bo->ttm.resource
is not updated to the new resource until after the move commits.
- Detach only after explicitly waiting for the copy fence to signal,
instead of tearing down the CCS BBs immediately after obtaining it.
While here, also fix xe_sriov_vf_ccs_attach_bo() to properly unwind and
propagate errors: the per-context loop previously never broke out on
error, silently discarding earlier failures. Unwind by clearing each
attached context directly via xe_migrate_ccs_rw_copy_clear() instead of
reusing xe_sriov_vf_ccs_detach_bo(), which requires both contexts to be
attached before it will clean up either one.
Fixes: 864690cf4dd6 ("drm/xe/vf: Attach and detach CCS copy commands with BO")
Cc: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Matthew Auld <matthew.auld@intel.com>
Cc: Michał Winiarski <michal.winiarski@intel.com>
Cc: Satyanarayana K V P <satyanarayana.k.v.p@intel.com>
Assisted-by: GitHub_Copilot:claude-sonnet-5
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Acked-by: Satyanarayana K V P <satyanarayana.k.v.p@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patch.msgid.link/20260714062440.3421225-1-matthew.brost@intel.com
(cherry picked from commit d45ad0aa7a1eb5d7288b5ed948b05695611dc39e)
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/xe/xe_bo.c | 34 +++++++++++++++++++---------
drivers/gpu/drm/xe/xe_migrate.c | 5 +++-
drivers/gpu/drm/xe/xe_migrate.h | 1 +
drivers/gpu/drm/xe/xe_sriov_vf_ccs.c | 20 ++++++++++++++--
drivers/gpu/drm/xe/xe_sriov_vf_ccs.h | 3 ++-
5 files changed, 48 insertions(+), 15 deletions(-)
diff --git a/drivers/gpu/drm/xe/xe_bo.c b/drivers/gpu/drm/xe/xe_bo.c
index 0dabe85351392e..1d46b61bf1285d 100644
--- a/drivers/gpu/drm/xe/xe_bo.c
+++ b/drivers/gpu/drm/xe/xe_bo.c
@@ -930,6 +930,21 @@ static int xe_bo_move(struct ttm_buffer_object *ttm_bo, bool evict,
xe_pm_runtime_get_noresume(xe);
}
+ /*
+ * Attach CCS BBs before submitting the copy job below so a VF
+ * migration racing the copy sees valid, up to date attach state.
+ */
+ if (IS_VF_CCS_READY(xe) &&
+ ((move_lacks_source && new_mem->mem_type == XE_PL_TT) ||
+ (old_mem_type == XE_PL_SYSTEM && new_mem->mem_type == XE_PL_TT)) &&
+ handle_system_ccs) {
+ ret = xe_sriov_vf_ccs_attach_bo(bo, new_mem);
+ if (ret) {
+ xe_pm_runtime_put(xe);
+ goto out;
+ }
+ }
+
if (move_lacks_source) {
u32 flags = 0;
@@ -967,22 +982,19 @@ static int xe_bo_move(struct ttm_buffer_object *ttm_bo, bool evict,
ttm_bo_move_null(ttm_bo, new_mem);
}
- dma_fence_put(fence);
- xe_pm_runtime_put(xe);
-
/*
- * CCS meta data is migrated from TT -> SMEM. So, let us detach the
- * BBs from BO as it is no longer needed.
+ * Detach must wait for the copy above to complete: a VF migration
+ * racing an in-flight copy must still see valid CCS BBs, so don't
+ * tear them down until the copy fence has signaled.
*/
if (IS_VF_CCS_READY(xe) && old_mem_type == XE_PL_TT &&
- new_mem->mem_type == XE_PL_SYSTEM)
+ new_mem->mem_type == XE_PL_SYSTEM) {
+ dma_fence_wait(fence, false);
xe_sriov_vf_ccs_detach_bo(bo);
+ }
- if (IS_VF_CCS_READY(xe) &&
- ((move_lacks_source && new_mem->mem_type == XE_PL_TT) ||
- (old_mem_type == XE_PL_SYSTEM && new_mem->mem_type == XE_PL_TT)) &&
- handle_system_ccs)
- ret = xe_sriov_vf_ccs_attach_bo(bo);
+ dma_fence_put(fence);
+ xe_pm_runtime_put(xe);
out:
if ((!ttm_bo->resource || ttm_bo->resource->mem_type == XE_PL_SYSTEM) &&
diff --git a/drivers/gpu/drm/xe/xe_migrate.c b/drivers/gpu/drm/xe/xe_migrate.c
index 6a0c088d09fb33..e0a14360d312e0 100644
--- a/drivers/gpu/drm/xe/xe_migrate.c
+++ b/drivers/gpu/drm/xe/xe_migrate.c
@@ -1001,6 +1001,8 @@ static int emit_flush_invalidate(struct xe_exec_queue *q, u32 *dw, int i,
* @tile: Tile whose migration context to be used.
* @q : Execution to be used along with migration context.
* @src_bo: The buffer object @src is currently bound to.
+ * @new_mem: The (not yet committed) destination resource @src_bo is being
+ * moved into; src_bo->ttm.resource is still the old resource.
* @read_write : Creates BB commands for CCS read/write.
*
* Creates batch buffer instructions to copy CCS metadata from CCS pool to
@@ -1012,12 +1014,13 @@ static int emit_flush_invalidate(struct xe_exec_queue *q, u32 *dw, int i,
*/
int xe_migrate_ccs_rw_copy(struct xe_tile *tile, struct xe_exec_queue *q,
struct xe_bo *src_bo,
+ struct ttm_resource *new_mem,
enum xe_sriov_vf_ccs_rw_ctxs read_write)
{
bool src_is_pltt = read_write == XE_SRIOV_VF_CCS_READ_CTX;
bool dst_is_pltt = read_write == XE_SRIOV_VF_CCS_WRITE_CTX;
- struct ttm_resource *src = src_bo->ttm.resource;
+ struct ttm_resource *src = new_mem;
struct xe_migrate *m = tile->migrate;
struct xe_gt *gt = tile->primary_gt;
u32 batch_size, batch_size_allocated;
diff --git a/drivers/gpu/drm/xe/xe_migrate.h b/drivers/gpu/drm/xe/xe_migrate.h
index 438c3bb66d9b24..8bac669685ee92 100644
--- a/drivers/gpu/drm/xe/xe_migrate.h
+++ b/drivers/gpu/drm/xe/xe_migrate.h
@@ -129,6 +129,7 @@ struct dma_fence *xe_migrate_copy(struct xe_migrate *m,
int xe_migrate_ccs_rw_copy(struct xe_tile *tile, struct xe_exec_queue *q,
struct xe_bo *src_bo,
+ struct ttm_resource *new_mem,
enum xe_sriov_vf_ccs_rw_ctxs read_write);
void xe_migrate_ccs_rw_copy_clear(struct xe_bo *src_bo,
diff --git a/drivers/gpu/drm/xe/xe_sriov_vf_ccs.c b/drivers/gpu/drm/xe/xe_sriov_vf_ccs.c
index d62156195f321b..e03714ef7ae996 100644
--- a/drivers/gpu/drm/xe/xe_sriov_vf_ccs.c
+++ b/drivers/gpu/drm/xe/xe_sriov_vf_ccs.c
@@ -330,6 +330,8 @@ void xe_sriov_vf_ccs_rw_update_bb_addr(struct xe_sriov_vf_ccs_ctx *ctx)
/**
* xe_sriov_vf_ccs_attach_bo - Insert CCS read write commands in the BO.
* @bo: the &buffer object to which batch buffer commands will be added.
+ * @new_mem: the (not yet committed) destination resource @bo is being moved
+ * into; bo->ttm.resource is still the old resource at this point.
*
* This function shall be called only by VF. It inserts the PTEs and copy
* command instructions in the BO by calling xe_migrate_ccs_rw_copy()
@@ -337,7 +339,7 @@ void xe_sriov_vf_ccs_rw_update_bb_addr(struct xe_sriov_vf_ccs_ctx *ctx)
*
* Returns: 0 if successful, negative error code on failure.
*/
-int xe_sriov_vf_ccs_attach_bo(struct xe_bo *bo)
+int xe_sriov_vf_ccs_attach_bo(struct xe_bo *bo, struct ttm_resource *new_mem)
{
struct xe_device *xe = xe_bo_device(bo);
enum xe_sriov_vf_ccs_rw_ctxs ctx_id;
@@ -356,7 +358,21 @@ int xe_sriov_vf_ccs_attach_bo(struct xe_bo *bo)
xe_assert(xe, !bb);
ctx = &xe->sriov.vf.ccs.contexts[ctx_id];
- err = xe_migrate_ccs_rw_copy(tile, ctx->mig_q, bo, ctx_id);
+ err = xe_migrate_ccs_rw_copy(tile, ctx->mig_q, bo, new_mem, ctx_id);
+ if (err)
+ goto err_unwind;
+ }
+ return 0;
+
+err_unwind:
+ /*
+ * Clean up any contexts already attached. Can't reuse
+ * xe_sriov_vf_ccs_detach_bo() here as it requires both contexts
+ * attached before cleaning up either one.
+ */
+ for_each_ccs_rw_ctx(ctx_id) {
+ if (bo->bb_ccs[ctx_id])
+ xe_migrate_ccs_rw_copy_clear(bo, ctx_id);
}
return err;
}
diff --git a/drivers/gpu/drm/xe/xe_sriov_vf_ccs.h b/drivers/gpu/drm/xe/xe_sriov_vf_ccs.h
index a9c6512f87034f..00d2c9dbe00d9a 100644
--- a/drivers/gpu/drm/xe/xe_sriov_vf_ccs.h
+++ b/drivers/gpu/drm/xe/xe_sriov_vf_ccs.h
@@ -11,11 +11,12 @@
#include "xe_sriov_vf_ccs_types.h"
struct drm_printer;
+struct ttm_resource;
struct xe_device;
struct xe_bo;
int xe_sriov_vf_ccs_init(struct xe_device *xe);
-int xe_sriov_vf_ccs_attach_bo(struct xe_bo *bo);
+int xe_sriov_vf_ccs_attach_bo(struct xe_bo *bo, struct ttm_resource *new_mem);
int xe_sriov_vf_ccs_detach_bo(struct xe_bo *bo);
int xe_sriov_vf_ccs_register_context(struct xe_device *xe);
void xe_sriov_vf_ccs_print(struct xe_device *xe, struct drm_printer *p);
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 128/675] drm/xe/wopcm: fix WOPCM size for LNL+
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (126 preceding siblings ...)
2026-07-30 14:07 ` [PATCH 6.18 127/675] drm/xe/vf: Fix VF CCS attach/detach race with in-flight BO moves Greg Kroah-Hartman
@ 2026-07-30 14:07 ` Greg Kroah-Hartman
2026-07-30 14:07 ` [PATCH 6.18 129/675] ksmbd: pin conn during async oplock break notification Greg Kroah-Hartman
` (551 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:07 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Daniele Ceraolo Spurio, Rodrigo Vivi,
Shuicheng Lin, Matt Roper, Thomas Hellström, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
[ Upstream commit ad87e2476b3b246580f407afc8ffa91d621bc849 ]
Starting on LNL the WOPCM size is 8MB instead of 4, so we need to avoid
using the [0, 8MB) range of the GGTT as that can be unaccessible from
the microcontrollers.
Note that the proper long-term fix here is to read the WOPCM size from
the HW, but that is a more serious rework that would be difficult to
backport, so we can do that as a follow-up.
Fixes: 9c57bc08652a ("drm/xe/lnl: Drop force_probe requirement")
Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Shuicheng Lin <shuicheng.lin@intel.com>
Cc: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Shuicheng Lin <shuicheng.lin@intel.com>
Link: https://patch.msgid.link/20260713221758.3285744-2-daniele.ceraolospurio@intel.com
(cherry picked from commit 3033b0b24ed0e2f5e56bdd4d9c183417c365a45b)
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/xe/xe_wopcm.c | 15 ++++++++++-----
1 file changed, 10 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/xe/xe_wopcm.c b/drivers/gpu/drm/xe/xe_wopcm.c
index ada0d0aa6b7494..2fd2a82be89f87 100644
--- a/drivers/gpu/drm/xe/xe_wopcm.c
+++ b/drivers/gpu/drm/xe/xe_wopcm.c
@@ -49,9 +49,9 @@
*/
/* Default WOPCM size is 2MB from Gen11, 1MB on previous platforms */
-/* FIXME: Larger size require for 2 tile PVC, do a proper probe sooner or later */
+/* FIXME: Larger size require for some platforms, do a proper probe sooner or later */
#define DGFX_WOPCM_SIZE SZ_4M
-/* FIXME: Larger size require for MTL, do a proper probe sooner or later */
+#define LNL_WOPCM_SIZE SZ_8M
#define MTL_WOPCM_SIZE SZ_4M
#define WOPCM_SIZE SZ_2M
@@ -181,9 +181,14 @@ static int __wopcm_init_regs(struct xe_device *xe, struct xe_gt *gt,
u32 xe_wopcm_size(struct xe_device *xe)
{
- return IS_DGFX(xe) ? DGFX_WOPCM_SIZE :
- xe->info.platform == XE_METEORLAKE ? MTL_WOPCM_SIZE :
- WOPCM_SIZE;
+ if (xe->info.platform >= XE_LUNARLAKE)
+ return LNL_WOPCM_SIZE;
+ else if (IS_DGFX(xe))
+ return DGFX_WOPCM_SIZE;
+ else if (xe->info.platform == XE_METEORLAKE)
+ return MTL_WOPCM_SIZE;
+ else
+ return WOPCM_SIZE;
}
/**
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 129/675] ksmbd: pin conn during async oplock break notification
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (127 preceding siblings ...)
2026-07-30 14:07 ` [PATCH 6.18 128/675] drm/xe/wopcm: fix WOPCM size for LNL+ Greg Kroah-Hartman
@ 2026-07-30 14:07 ` Greg Kroah-Hartman
2026-07-30 14:07 ` [PATCH 6.18 130/675] ksmbd: validate compound request size before reading StructureSize2 Greg Kroah-Hartman
` (550 subsequent siblings)
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From: Greg Kroah-Hartman @ 2026-07-30 14:07 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Qihang, Namjae Jeon, Steve French,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Qihang <q.h.hack.winter@gmail.com>
[ Upstream commit aa5d8f3f96aa11a4a54ce993c11ce8af11c546f9 ]
smb2_oplock_break_noti() and smb2_lease_break_noti() store a ksmbd_conn
pointer in an async ksmbd_work and then queue that work on ksmbd-io. The
work only increments conn->r_count, which prevents teardown from passing
the pending-request wait after the increment, but it does not pin the
struct ksmbd_conn object.
If connection teardown races with an oplock break notification, the last
conn reference can be dropped before the queued worker finishes. The
worker then uses the freed conn in ksmbd_conn_write() and
ksmbd_conn_r_count_dec().
Take a real conn reference when publishing the conn pointer to the async
work item, and drop it after the notification work has decremented
r_count. Apply the same lifetime rule to lease break notification, which
uses the same work->conn pattern.
Fixes: 3aa660c05924 ("ksmbd: prevent connection release during oplock break notification")
Signed-off-by: Qihang <q.h.hack.winter@gmail.com>
Acked-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
fs/smb/server/oplock.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/fs/smb/server/oplock.c b/fs/smb/server/oplock.c
index a019c4496ae433..ff0dbf3f8cbf49 100644
--- a/fs/smb/server/oplock.c
+++ b/fs/smb/server/oplock.c
@@ -705,6 +705,7 @@ static void __smb2_oplock_break_noti(struct work_struct *wk)
out:
ksmbd_free_work_struct(work);
ksmbd_conn_r_count_dec(conn);
+ ksmbd_conn_put(conn);
}
/**
@@ -740,7 +741,7 @@ static int smb2_oplock_break_noti(struct oplock_info *opinfo)
br_info->open_trunc = opinfo->open_trunc;
work->request_buf = (char *)br_info;
- work->conn = conn;
+ work->conn = ksmbd_conn_get(conn);
work->sess = opinfo->sess;
ksmbd_conn_r_count_inc(conn);
@@ -814,6 +815,7 @@ static void __smb2_lease_break_noti(struct work_struct *wk)
out:
ksmbd_free_work_struct(work);
ksmbd_conn_r_count_dec(conn);
+ ksmbd_conn_put(conn);
}
/**
@@ -853,7 +855,7 @@ static int smb2_lease_break_noti(struct oplock_info *opinfo)
memcpy(br_info->lease_key, lease->lease_key, SMB2_LEASE_KEY_SIZE);
work->request_buf = (char *)br_info;
- work->conn = conn;
+ work->conn = ksmbd_conn_get(conn);
work->sess = opinfo->sess;
ksmbd_conn_r_count_inc(conn);
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 130/675] ksmbd: validate compound request size before reading StructureSize2
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (128 preceding siblings ...)
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@ 2026-07-30 14:07 ` Greg Kroah-Hartman
2026-07-30 14:07 ` [PATCH 6.18 131/675] drm/i915/wm: clear the plane ddb_y entries on plane disable Greg Kroah-Hartman
` (549 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:07 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, AutonomousCodeSecurity,
Xiang Mei (Microsoft), Namjae Jeon, Steve French, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Xiang Mei (Microsoft) <xmei5@asu.edu>
[ Upstream commit 15b38176fd1530372905c602fde51fe89ec8c877 ]
When ksmbd validates a compound (chained) SMB2 request,
ksmbd_smb2_check_message() reads pdu->StructureSize2 without first
checking that the compound element is large enough to contain it.
StructureSize2 is a 2-byte field at offset 64
(__SMB2_HEADER_STRUCTURE_SIZE) from the start of each element.
The compound-walking logic only guarantees that a full 64-byte SMB2
header is present for the trailing element: when NextCommand is 0, len is
reduced to the number of bytes remaining after next_smb2_rcv_hdr_off. A
remote client can craft a compound request whose last element has exactly
64 bytes, so the 2-byte StructureSize2 read at offset 64 extends one byte
past the receive buffer, producing a slab-out-of-bounds read.
BUG: KASAN: slab-out-of-bounds in ksmbd_smb2_check_message (fs/smb/server/smb2misc.c:402)
Read of size 2 at addr ffff888012ae31ac by task kworker/0:1/14
The buggy address is located 172 bytes inside of allocated 173-byte region
Workqueue: ksmbd-io handle_ksmbd_work
Call Trace:
...
kasan_report (mm/kasan/report.c:595)
ksmbd_smb2_check_message (fs/smb/server/smb2misc.c:402)
handle_ksmbd_work (fs/smb/server/server.c:119)
process_one_work (kernel/workqueue.c:3314)
worker_thread (kernel/workqueue.c:3397)
kthread (kernel/kthread.c:436)
ret_from_fork (arch/x86/kernel/process.c:158)
ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
Reject any compound element that is too small to hold StructureSize2
before dereferencing it.
Fixes: e2f34481b24d ("cifsd: add server-side procedures for SMB3")
Reported-by: AutonomousCodeSecurity@microsoft.com
Signed-off-by: Xiang Mei (Microsoft) <xmei5@asu.edu>
Acked-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
fs/smb/server/smb2misc.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/fs/smb/server/smb2misc.c b/fs/smb/server/smb2misc.c
index 67a2d7a793f6ed..b11d854d3fcfba 100644
--- a/fs/smb/server/smb2misc.c
+++ b/fs/smb/server/smb2misc.c
@@ -400,6 +400,11 @@ int ksmbd_smb2_check_message(struct ksmbd_work *work)
return 1;
}
+ if (len < __SMB2_HEADER_STRUCTURE_SIZE + sizeof(__le16)) {
+ ksmbd_debug(SMB, "Message is too small for StructureSize2\n");
+ return 1;
+ }
+
if (smb2_req_struct_sizes[command] != pdu->StructureSize2) {
if (!(command == SMB2_OPLOCK_BREAK_HE &&
(le16_to_cpu(pdu->StructureSize2) == OP_BREAK_STRUCT_SIZE_20 ||
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 131/675] drm/i915/wm: clear the plane ddb_y entries on plane disable
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (129 preceding siblings ...)
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@ 2026-07-30 14:07 ` Greg Kroah-Hartman
2026-07-30 14:07 ` [PATCH 6.18 132/675] drm/i915/selftests: Fix GT PM sort comparators Greg Kroah-Hartman
` (548 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:07 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Vinod Govindapillai, Suraj Kandpal,
Rodrigo Vivi, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Vinod Govindapillai <vinod.govindapillai@intel.com>
[ Upstream commit e89978c1cff54e265345c66e1177d19ea5a8bc00 ]
The UV/Y plane DDB entriess are never cleared on
sk_wm_plane_disable_noatomic() and can leave stale DDB state
for NV12 planes on pre-Gen11 devices
Fixes: d34b59d5ba41 ("drm/i915: Add skl_wm_plane_disable_noatomic()")
Assisted-by: Copilot:claude-sonnet-4.6
Signed-off-by: Vinod Govindapillai <vinod.govindapillai@intel.com>
Reviewed-by: Suraj Kandpal <suraj.kandpal@intel.com>
Link: https://patch.msgid.link/20260615203355.218578-2-vinod.govindapillai@intel.com
(cherry picked from commit 60f68a6ba298fd1e971a2d91576304bee89a16fc)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/i915/display/skl_watermark.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/display/skl_watermark.c b/drivers/gpu/drm/i915/display/skl_watermark.c
index a5862998bf1447..eb54fffc698864 100644
--- a/drivers/gpu/drm/i915/display/skl_watermark.c
+++ b/drivers/gpu/drm/i915/display/skl_watermark.c
@@ -3815,7 +3815,7 @@ void skl_wm_plane_disable_noatomic(struct intel_crtc *crtc,
return;
skl_ddb_entry_init(&crtc_state->wm.skl.plane_ddb[plane->id], 0, 0);
- skl_ddb_entry_init(&crtc_state->wm.skl.plane_ddb[plane->id], 0, 0);
+ skl_ddb_entry_init(&crtc_state->wm.skl.plane_ddb_y[plane->id], 0, 0);
crtc_state->wm.skl.plane_min_ddb[plane->id] = 0;
crtc_state->wm.skl.plane_interim_ddb[plane->id] = 0;
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 132/675] drm/i915/selftests: Fix GT PM sort comparators
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (130 preceding siblings ...)
2026-07-30 14:07 ` [PATCH 6.18 131/675] drm/i915/wm: clear the plane ddb_y entries on plane disable Greg Kroah-Hartman
@ 2026-07-30 14:07 ` Greg Kroah-Hartman
2026-07-30 14:07 ` [PATCH 6.18 133/675] accel/amdxdna: Fix use-after-free of mm_struct in job scheduler Greg Kroah-Hartman
` (547 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:07 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Emre Cecanpunar, Tvrtko Ursulin,
Rodrigo Vivi, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Emre Cecanpunar <emreleno@gmail.com>
[ Upstream commit 612978b83f45bf7018815209db5395d759db6f26 ]
Compare the sampled clock values instead of their addresses. Comparing
addresses leaves the samples unsorted, preventing the code from discarding
the minimum and maximum samples.
Fixes: 1a5392479207 ("drm/i915/selftests: Measure CS_TIMESTAMP")
Signed-off-by: Emre Cecanpunar <emreleno@gmail.com>
Signed-off-by: Tvrtko Ursulin <tursulin@ursulin.net>
Link: https://lore.kernel.org/r/20260714220430.238433-1-emreleno@gmail.com
(cherry picked from commit 682ea2d28d18bb06f9fc663cb5ab7e80dc0e606a)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/i915/gt/selftest_gt_pm.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/i915/gt/selftest_gt_pm.c b/drivers/gpu/drm/i915/gt/selftest_gt_pm.c
index 33351deeea4f0b..07eaf71955c447 100644
--- a/drivers/gpu/drm/i915/gt/selftest_gt_pm.c
+++ b/drivers/gpu/drm/i915/gt/selftest_gt_pm.c
@@ -16,9 +16,9 @@ static int cmp_u64(const void *A, const void *B)
{
const u64 *a = A, *b = B;
- if (a < b)
+ if (*a < *b)
return -1;
- else if (a > b)
+ else if (*a > *b)
return 1;
else
return 0;
@@ -28,9 +28,9 @@ static int cmp_u32(const void *A, const void *B)
{
const u32 *a = A, *b = B;
- if (a < b)
+ if (*a < *b)
return -1;
- else if (a > b)
+ else if (*a > *b)
return 1;
else
return 0;
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 133/675] accel/amdxdna: Fix use-after-free of mm_struct in job scheduler
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (131 preceding siblings ...)
2026-07-30 14:07 ` [PATCH 6.18 132/675] drm/i915/selftests: Fix GT PM sort comparators Greg Kroah-Hartman
@ 2026-07-30 14:07 ` Greg Kroah-Hartman
2026-07-30 14:07 ` [PATCH 6.18 134/675] tcp: fix TIME_WAIT socket reference leak on PSP policy failure Greg Kroah-Hartman
` (546 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:07 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Max Zhen, Lizhi Hou, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Lizhi Hou <lizhi.hou@amd.com>
[ Upstream commit faebb7ba1ac65fa5810b640df02ce04e509fdc11 ]
amdxdna_cmd_submit() stores current->mm in job->mm without holding any
reference. aie2_sched_job_run() later access job->mm from the DRM
scheduler worker thread. With only a raw pointer and no structural
reference, the mm_struct can be freed before the scheduler runs the job.
Fix this by calling mmgrab() to hold a structural mm_count reference for
the lifetime of the job, paired with mmdrop() in every cleanup path.
Fixes: aac243092b70 ("accel/amdxdna: Add command execution")
Reviewed-by: Max Zhen <max.zhen@amd.com>
Signed-off-by: Lizhi Hou <lizhi.hou@amd.com>
Link: https://patch.msgid.link/20260716151305.1595780-1-lizhi.hou@amd.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/accel/amdxdna/amdxdna_ctx.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/accel/amdxdna/amdxdna_ctx.c b/drivers/accel/amdxdna/amdxdna_ctx.c
index cfee89681ff3cf..347e046d2a0fba 100644
--- a/drivers/accel/amdxdna/amdxdna_ctx.c
+++ b/drivers/accel/amdxdna/amdxdna_ctx.c
@@ -393,6 +393,7 @@ void amdxdna_sched_job_cleanup(struct amdxdna_sched_job *job)
amdxdna_arg_bos_put(job);
amdxdna_gem_put_obj(job->cmd_bo);
dma_fence_put(job->fence);
+ mmdrop(job->mm);
}
int amdxdna_cmd_submit(struct amdxdna_client *client,
@@ -443,6 +444,7 @@ int amdxdna_cmd_submit(struct amdxdna_client *client,
job->hwctx = hwctx;
job->mm = current->mm;
+ mmgrab(job->mm);
job->fence = amdxdna_fence_create(hwctx);
if (!job->fence) {
@@ -475,6 +477,8 @@ int amdxdna_cmd_submit(struct amdxdna_client *client,
cmd_put:
amdxdna_gem_put_obj(job->cmd_bo);
free_job:
+ if (job->mm)
+ mmdrop(job->mm);
kfree(job);
return ret;
}
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 134/675] tcp: fix TIME_WAIT socket reference leak on PSP policy failure
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (132 preceding siblings ...)
2026-07-30 14:07 ` [PATCH 6.18 133/675] accel/amdxdna: Fix use-after-free of mm_struct in job scheduler Greg Kroah-Hartman
@ 2026-07-30 14:07 ` Greg Kroah-Hartman
2026-07-30 14:07 ` [PATCH 6.18 135/675] dpll: fix NULL pointer dereference in dpll_msg_add_pin_ref_sync() Greg Kroah-Hartman
` (545 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:07 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Eric Dumazet, Kuniyuki Iwashima,
Daniel Zahka, Paolo Abeni, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Eric Dumazet <edumazet@google.com>
[ Upstream commit 2c1931a81122c3cdc4c89448fe0442c69e21c0d5 ]
Release the TIME_WAIT socket reference and jump to discard_it
upon PSP policy failure in both IPv4 and IPv6 receive paths.
This prevents a memory leak of tcp_tw_bucket structures.
Fixes: 659a2899a57d ("tcp: add datapath logic for PSP with inline key exchange")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Kuniyuki Iwashima <kuniyu@google.com>
Reviewed-by: Daniel Zahka <daniel.zahka@gmail.com>
Link: https://patch.msgid.link/20260710181317.4060230-1-edumazet@google.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/ipv4/tcp_ipv4.c | 6 ++++--
net/ipv6/tcp_ipv6.c | 6 ++++--
2 files changed, 8 insertions(+), 4 deletions(-)
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index f0106c2be1cf23..a1ed4fa264836d 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -2452,8 +2452,10 @@ int tcp_v4_rcv(struct sk_buff *skb)
}
drop_reason = psp_twsk_rx_policy_check(inet_twsk(sk), skb);
- if (drop_reason)
- break;
+ if (drop_reason) {
+ inet_twsk_put(inet_twsk(sk));
+ goto discard_it;
+ }
}
/* to ACK */
fallthrough;
diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index 59b5900dd42bd6..ad9f69d49f2e3d 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -1984,8 +1984,10 @@ INDIRECT_CALLABLE_SCOPE int tcp_v6_rcv(struct sk_buff *skb)
}
drop_reason = psp_twsk_rx_policy_check(inet_twsk(sk), skb);
- if (drop_reason)
- break;
+ if (drop_reason) {
+ inet_twsk_put(inet_twsk(sk));
+ goto discard_it;
+ }
}
/* to ACK */
fallthrough;
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 135/675] dpll: fix NULL pointer dereference in dpll_msg_add_pin_ref_sync()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (133 preceding siblings ...)
2026-07-30 14:07 ` [PATCH 6.18 134/675] tcp: fix TIME_WAIT socket reference leak on PSP policy failure Greg Kroah-Hartman
@ 2026-07-30 14:07 ` Greg Kroah-Hartman
2026-07-30 14:07 ` [PATCH 6.18 136/675] net/sched: act_tunnel_key: Defer dst_release to RCU callback Greg Kroah-Hartman
` (544 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:07 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Ivan Vecera, Vadim Fedorenko,
Jiri Pirko, Paolo Abeni, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Ivan Vecera <ivecera@redhat.com>
[ Upstream commit d2e914a4a0d0f753dbae830264850d044026167c ]
When a dpll_pin is shared across multiple dpll_device instances and
those devices are being unregistered (e.g. during driver module removal),
a NULL pointer dereference can occur in dpll_msg_add_pin_ref_sync().
This happens under the following conditions:
- A pin is registered with two or more dpll devices (dpll_A, dpll_B)
- The pin has ref_sync pairs with other pins
- During unregistration of dpll_A's pins, a ref_sync partner pin is
unregistered first, removing it from dpll_A->pin_refs
- But since the partner pin is still registered with dpll_B, its
dpll_refs is not empty, so dpll_pin_ref_sync_pair_del() does NOT
run and the partner stays in the pin's ref_sync_pins xarray
- When the pin itself is then unregistered from dpll_A, the delete
notification calls dpll_msg_add_pin_ref_sync() which finds the
partner in ref_sync_pins, passes dpll_pin_available() (partner is
still registered with dpll_B), but dpll_pin_on_dpll_priv(dpll_A,
partner) returns NULL because partner was already removed from
dpll_A->pin_refs
- The NULL priv pointer is passed to the driver's ref_sync_get
callback, which dereferences it
BUG: kernel NULL pointer dereference, address: 0000000000000034
Oops: Oops: 0000 [#1] SMP NOPTI
RIP: 0010:zl3073x_dpll_input_pin_ref_sync_get+0x73/0x80 [zl3073x]
Call Trace:
dpll_msg_add_pin_ref_sync+0xb8/0x200
dpll_cmd_pin_get_one+0x3b6/0x4b0
dpll_pin_event_send+0x72/0x140
__dpll_pin_unregister+0x5a/0x2b0
dpll_pin_unregister+0x49/0x70
Fix this by skipping ref_sync pins whose priv pointer cannot be resolved
for the current dpll device.
Fixes: 58256a26bfb3 ("dpll: add reference sync get/set")
Signed-off-by: Ivan Vecera <ivecera@redhat.com>
Reviewed-by: Vadim Fedorenko <vadim.fedorenko@linux.dev>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Link: https://patch.msgid.link/20260710193625.1378822-1-ivecera@redhat.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/dpll/dpll_netlink.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/dpll/dpll_netlink.c b/drivers/dpll/dpll_netlink.c
index de8b065280d15d..eb23ee401aaef8 100644
--- a/drivers/dpll/dpll_netlink.c
+++ b/drivers/dpll/dpll_netlink.c
@@ -486,6 +486,9 @@ dpll_msg_add_pin_ref_sync(struct sk_buff *msg, struct dpll_pin *pin,
if (!dpll_pin_available(ref_sync_pin))
continue;
ref_sync_pin_priv = dpll_pin_on_dpll_priv(dpll, ref_sync_pin);
+ /* Pin may have been unregistered from this dpll already */
+ if (!ref_sync_pin_priv)
+ continue;
if (WARN_ON(!ops->ref_sync_get))
return -EOPNOTSUPP;
ret = ops->ref_sync_get(pin, pin_priv, ref_sync_pin,
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 136/675] net/sched: act_tunnel_key: Defer dst_release to RCU callback
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (134 preceding siblings ...)
2026-07-30 14:07 ` [PATCH 6.18 135/675] dpll: fix NULL pointer dereference in dpll_msg_add_pin_ref_sync() Greg Kroah-Hartman
@ 2026-07-30 14:07 ` Greg Kroah-Hartman
2026-07-30 14:07 ` [PATCH 6.18 137/675] sctp: fix auth_hmacs array size in struct sctp_cookie Greg Kroah-Hartman
` (543 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:07 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, zdi-disclosures, Victor Nogueira,
Jamal Hadi Salim, Davide Caratti, Paolo Abeni, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jamal Hadi Salim <jhs@mojatatu.com>
[ Upstream commit f1f5c8a3955f8fda3f84ed883ac8daa1847e724c ]
Fix a race-condition use-after-free in tunnel_key_release_params().
The function releases the metadata_dst of the old params synchronously
via dst_release() while deferring the params struct free with
kfree_rcu(). A concurrent tunnel_key_act() reader on the datapath may
still hold the old params pointer (under rcu_read_lock_bh) and proceed
to call dst_clone(¶ms->tcft_enc_metadata->dst) after the writer's
dst_release has already pushed the dst's rcuref to RCUREF_DEAD.
zdi-disclosures@trendmicro.com produced a poc which i (and Victor) verified
that KASAN reports:
==================================================================
BUG: KASAN: slab-use-after-free in instrument_atomic_read_write include/linux/instrumented.h:112
BUG: KASAN: slab-use-after-free in atomic_sub_return_release include/linux/atomic/atomic-instrumented.h:326
BUG: KASAN: slab-use-after-free in __rcuref_put include/linux/rcuref.h:109
BUG: KASAN: slab-use-after-free in rcuref_put include/linux/rcuref.h:173
BUG: KASAN: slab-use-after-free in dst_release+0x5b/0x370 net/core/dst.c:168
Write of size 4 at addr ffff88806158de40 by task poc/9388
CPU: 0 UID: 0 PID: 9388 Comm: poc Tainted: G W 7.1.0-rc7 #7 PREEMPT(lazy)
Tainted: [W]=WARN
Hardware name: QEMU Ubuntu 25.10 PC v2 (i440FX + PIIX, + 10.1 machine, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:94
dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
print_address_description mm/kasan/report.c:378
print_report+0x139/0x4ad mm/kasan/report.c:482
kasan_report+0xe4/0x1d0 mm/kasan/report.c:595
check_region_inline mm/kasan/generic.c:186
kasan_check_range+0x125/0x200 mm/kasan/generic.c:200
instrument_atomic_read_write include/linux/instrumented.h:112
atomic_sub_return_release include/linux/atomic/atomic-instrumented.h:326
__rcuref_put include/linux/rcuref.h:109
rcuref_put include/linux/rcuref.h:173
dst_release+0x5b/0x370 net/core/dst.c:168
refdst_drop include/net/dst.h:272
skb_dst_drop include/net/dst.h:284
skb_release_head_state+0x293/0x400 net/core/skbuff.c:1163
skb_release_all net/core/skbuff.c:1187
[..]
Allocated by task 9391:
kasan_save_stack+0x30/0x50 mm/kasan/common.c:57
kasan_save_track+0x14/0x30 mm/kasan/common.c:78
poison_kmalloc_redzone mm/kasan/common.c:398
__kasan_kmalloc+0x9a/0xb0 mm/kasan/common.c:415
kasan_kmalloc include/linux/kasan.h:263
__do_kmalloc_node mm/slub.c:5296
__kmalloc_noprof+0x2f1/0x830 mm/slub.c:5308
kmalloc_noprof include/linux/slab.h:954
kzalloc_noprof include/linux/slab.h:1188
offload_action_alloc+0x2f/0x130 net/core/flow_offload.c:35
tcf_action_offload_add_ex+0x1ba/0x880 net/sched/act_api.c:258
tcf_action_offload_add net/sched/act_api.c:293
tcf_action_init+0x66e/0xa20 net/sched/act_api.c:1547
tcf_action_add+0xf6/0x5d0 net/sched/act_api.c:2101
[..]
Freed by task 9391:
kasan_save_stack+0x30/0x50 mm/kasan/common.c:57
kasan_save_track+0x14/0x30 mm/kasan/common.c:78
kasan_save_free_info+0x3b/0x70 mm/kasan/generic.c:584
poison_slab_object mm/kasan/common.c:253
__kasan_slab_free+0x6b/0x90 mm/kasan/common.c:285
kasan_slab_free include/linux/kasan.h:235
slab_free_hook mm/slub.c:2689
slab_free mm/slub.c:6251
kfree+0x21f/0x6b0 mm/slub.c:6566
tcf_action_offload_add_ex+0x4ad/0x880 net/sched/act_api.c:284
tcf_action_offload_add net/sched/act_api.c:293
tcf_action_init+0x66e/0xa20 net/sched/act_api.c:1547
tcf_action_add+0xf6/0x5d0 net/sched/act_api.c:2101
The buggy address belongs to the object at ffff88806158de00
which belongs to the cache kmalloc-256 of size 256
The buggy address is located 64 bytes inside of
freed 256-byte region [ffff88806158de00, ffff88806158df00)
The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff88806158d600 pfn:0x6158c
head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0x4fff00000000240(workingset|head|node=1|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 04fff00000000240 ffff88801c841b40 ffffea0001856290 ffffea0001856190
raw: ffff88806158d600 0000000800100009 00000000f5000000 0000000000000000
head: 04fff00000000240 ffff88801c841b40 ffffea0001856290 ffffea0001856190
head: ffff88806158d600 0000000800100009 00000000f5000000 0000000000000000
head: 04fff00000000001 ffffffffffffff81 00000000ffffffff 00000000ffffffff
head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000002
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 1, migratetype Unmovable, gfp_mask 0xd2820(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 9391, tgid 9378 (poc), ts 123227323196, free_ts 0
set_page_owner include/linux/page_owner.h:32
post_alloc_hook+0xfe/0x140 mm/page_alloc.c:1853
prep_new_page mm/page_alloc.c:1861
get_page_from_freelist+0x110c/0x2fc0 mm/page_alloc.c:3941
__alloc_frozen_pages_noprof+0x263/0x2bc0 mm/page_alloc.c:5221
alloc_slab_page mm/slub.c:3278
allocate_slab mm/slub.c:3467
new_slab+0xa6/0x690 mm/slub.c:3525
refill_objects+0x271/0x420 mm/slub.c:7272
refill_sheaf mm/slub.c:2816
__pcs_replace_empty_main+0x373/0x630 mm/slub.c:4652
alloc_from_pcs mm/slub.c:4750
slab_alloc_node mm/slub.c:4884
__do_kmalloc_node mm/slub.c:5295
__kmalloc_noprof+0x66d/0x830 mm/slub.c:5308
kmalloc_noprof include/linux/slab.h:954
metadata_dst_alloc+0x26/0x90 net/core/dst.c:298
tun_rx_dst include/net/dst_metadata.h:144
__ip_tun_set_dst include/net/dst_metadata.h:208
tunnel_key_init+0xb01/0x1b90 net/sched/act_tunnel_key.c:451
tcf_action_init_1+0x46b/0x6c0 net/sched/act_api.c:1428
tcf_action_init+0x448/0xa20 net/sched/act_api.c:1503
tcf_action_add+0xf6/0x5d0 net/sched/act_api.c:2101
[..]
==================================================================
Fix by moving dst_release() into a custom RCU callback that runs
after the grace period, matching the lifetime of the containing
params struct. Readers in the datapath therefore always find a live
rcuref when calling dst_clone().
Fixes: 9174c3df1cd18 ("net/sched: act_tunnel_key: fix memory leak in case of action replace")
Reported-by: zdi-disclosures@trendmicro.com
Tested-by: Victor Nogueira <victor@mojatatu.com>
Signed-off-by: Jamal Hadi Salim <jhs@mojatatu.com>
Reviewed-by: Davide Caratti <dcaratti@redhat.com>
Link: https://patch.msgid.link/20260711150537.7946-1-jhs@mojatatu.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/sched/act_tunnel_key.c | 14 ++++++++++----
1 file changed, 10 insertions(+), 4 deletions(-)
diff --git a/net/sched/act_tunnel_key.c b/net/sched/act_tunnel_key.c
index 876b30c5709e1f..b14807761d829e 100644
--- a/net/sched/act_tunnel_key.c
+++ b/net/sched/act_tunnel_key.c
@@ -342,14 +342,20 @@ static const struct nla_policy tunnel_key_policy[TCA_TUNNEL_KEY_MAX + 1] = {
[TCA_TUNNEL_KEY_ENC_TTL] = { .type = NLA_U8 },
};
-static void tunnel_key_release_params(struct tcf_tunnel_key_params *p)
+static void tunnel_key_release_params_rcu(struct rcu_head *head)
{
- if (!p)
- return;
+ struct tcf_tunnel_key_params *p = container_of(head, typeof(*p), rcu);
+
if (p->tcft_action == TCA_TUNNEL_KEY_ACT_SET)
dst_release(&p->tcft_enc_metadata->dst);
+ kfree(p);
+}
- kfree_rcu(p, rcu);
+static void tunnel_key_release_params(struct tcf_tunnel_key_params *p)
+{
+ if (!p)
+ return;
+ call_rcu(&p->rcu, tunnel_key_release_params_rcu);
}
static int tunnel_key_init(struct net *net, struct nlattr *nla,
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 137/675] sctp: fix auth_hmacs array size in struct sctp_cookie
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (135 preceding siblings ...)
2026-07-30 14:07 ` [PATCH 6.18 136/675] net/sched: act_tunnel_key: Defer dst_release to RCU callback Greg Kroah-Hartman
@ 2026-07-30 14:07 ` Greg Kroah-Hartman
2026-07-30 14:07 ` [PATCH 6.18 138/675] mpls: fix NULL deref in mpls_valid_fib_dump_req() on CONFIG_INET=n Greg Kroah-Hartman
` (542 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:07 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Yuan Tan, Xin Liu, Zihan Xi, Ren Wei,
Xin Long, Paolo Abeni, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Xin Long <lucien.xin@gmail.com>
[ Upstream commit e0b5252a59383b77d1b8dbeda00b7184dd95f4d3 ]
The auth_hmacs array in struct sctp_cookie is supposed to store a complete
SCTP_AUTH_HMAC_ALGO parameter, which consists of a struct sctp_paramhdr
followed by N HMAC identifiers.
However, the array size was calculated using an extra 2 bytes instead of
sizeof(struct sctp_paramhdr), which is 4 bytes. When four HMAC identifiers
are configured, the HMAC-ALGO parameter stored in the endpoint is larger
than the auth_hmacs buffer in the cookie.
As a result, sctp_association_init() copies beyond the end of auth_hmacs
when initializing the association, corrupting the adjacent auth_chunks
field. This can lead to an invalid HMAC identifier being accepted and later
cause an out-of-bounds read in sctp_auth_get_hmac().
Fix the array size calculation by including the full SCTP parameter header
size.
Fixes: 1f485649f529 ("[SCTP]: Implement SCTP-AUTH internals")
Reported-by: Yuan Tan <yuantan098@gmail.com>
Reported-by: Xin Liu <dstsmallbird@foxmail.com>
Reported-by: Zihan Xi <xizh2024@lzu.edu.cn>
Reported-by: Ren Wei <enjou1224z@gmail.com>
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Link: https://patch.msgid.link/634a0de0d5de29532915e6d47c92a0cbc206e03f.1783707155.git.lucien.xin@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
include/net/sctp/structs.h | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/include/net/sctp/structs.h b/include/net/sctp/structs.h
index 2ae390219efdd3..4bbba29f7341ee 100644
--- a/include/net/sctp/structs.h
+++ b/include/net/sctp/structs.h
@@ -316,7 +316,8 @@ struct sctp_cookie {
__u8 auth_random[sizeof(struct sctp_paramhdr) +
SCTP_AUTH_RANDOM_LENGTH];
- __u8 auth_hmacs[SCTP_AUTH_NUM_HMACS * sizeof(__u16) + 2];
+ __u8 auth_hmacs[sizeof(struct sctp_paramhdr) +
+ SCTP_AUTH_NUM_HMACS * sizeof(__u16)];
__u8 auth_chunks[sizeof(struct sctp_paramhdr) + SCTP_AUTH_MAX_CHUNKS];
/* This is a shim for my peer's INIT packet, followed by
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 138/675] mpls: fix NULL deref in mpls_valid_fib_dump_req() on CONFIG_INET=n
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (136 preceding siblings ...)
2026-07-30 14:07 ` [PATCH 6.18 137/675] sctp: fix auth_hmacs array size in struct sctp_cookie Greg Kroah-Hartman
@ 2026-07-30 14:07 ` Greg Kroah-Hartman
2026-07-30 14:07 ` [PATCH 6.18 139/675] usb: core: sysfs: add lock to bos_descriptors_read() Greg Kroah-Hartman
` (541 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:07 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Xiang Mei, Weiming Shi, David Ahern,
Paolo Abeni, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Weiming Shi <bestswngs@gmail.com>
[ Upstream commit 56d96fededd61192cd7cc8d2b0f36adfd59036c3 ]
On CONFIG_INET=n builds, mpls_valid_fib_dump_req() walks the parsed
attribute table itself instead of calling ip_valid_fib_dump_req(). The
RTA_OIF arm passes tb[RTA_OIF] to nla_get_u32() without checking it is
present, so an RTM_GETROUTE dump for AF_MPLS with strict checking and no
RTA_OIF hits a NULL dereference.
RTM_GETROUTE is RTNL_KIND_GET, which rtnetlink_rcv_msg() permits without
CAP_NET_ADMIN, so an unprivileged user can trigger it.
Oops: general protection fault, probably for non-canonical address
0xdffffc0000000000: 0000 [#1] SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
RIP: 0010:mpls_valid_fib_dump_req (net/mpls/af_mpls.c:2189)
Call Trace:
mpls_dump_routes (net/mpls/af_mpls.c:2236)
netlink_dump (net/netlink/af_netlink.c:2331)
__netlink_dump_start (net/netlink/af_netlink.c:2446)
rtnetlink_rcv_msg (net/core/rtnetlink.c:7033)
netlink_rcv_skb (net/netlink/af_netlink.c:2556)
netlink_unicast (net/netlink/af_netlink.c:1345)
netlink_sendmsg (net/netlink/af_netlink.c:1900)
__sock_sendmsg (net/socket.c:790)
____sys_sendmsg (net/socket.c:2684)
___sys_sendmsg (net/socket.c:2738)
__sys_sendmsg (net/socket.c:2770)
do_syscall_64 (arch/x86/entry/syscall_64.c:94)
entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
Skip unset attributes, as ip_valid_fib_dump_req() does.
Fixes: 196cfebf8972 ("net/mpls: Handle kernel side filtering of route dumps")
Assisted-by: Claude:claude-opus-4-8
Reported-by: Xiang Mei <xmei5@asu.edu>
Signed-off-by: Weiming Shi <bestswngs@gmail.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Link: https://patch.msgid.link/20260711114958.1009619-3-bestswngs@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/mpls/af_mpls.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/net/mpls/af_mpls.c b/net/mpls/af_mpls.c
index 1c70cb26e7ba17..f7f60025d042a4 100644
--- a/net/mpls/af_mpls.c
+++ b/net/mpls/af_mpls.c
@@ -2123,6 +2123,9 @@ static int mpls_valid_fib_dump_req(struct net *net, const struct nlmsghdr *nlh,
int ifindex;
if (i == RTA_OIF) {
+ if (!tb[i])
+ continue;
+
ifindex = nla_get_u32(tb[i]);
filter->dev = __dev_get_by_index(net, ifindex);
if (!filter->dev)
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 139/675] usb: core: sysfs: add lock to bos_descriptors_read()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (137 preceding siblings ...)
2026-07-30 14:07 ` [PATCH 6.18 138/675] mpls: fix NULL deref in mpls_valid_fib_dump_req() on CONFIG_INET=n Greg Kroah-Hartman
@ 2026-07-30 14:07 ` Greg Kroah-Hartman
2026-07-30 14:07 ` [PATCH 6.18 140/675] wifi: at76c50x-usb: avoid length underflow in at76_guess_freq() Greg Kroah-Hartman
` (540 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:07 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Griffin Kroah-Hartman, Alan Stern,
stable
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Griffin Kroah-Hartman <griffin@kroah.com>
commit 4e0197fbb0eec588795d5431716a244d9ac8fa93 upstream.
Add a lock to the function bos_descriptors_read().
This function accesses udev->bos, which could be simultaneously freed in
usb_reset_and_verify_device(), a function that is commonly called in
drivers all over the kernel.
Assisted-by: gkh_clanker_t1000
Signed-off-by: Griffin Kroah-Hartman <griffin@kroah.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Cc: stable <stable@kernel.org>
Link: https://patch.msgid.link/20260715-usb_core_patches_3-v1-1-53021f5576fd@kroah.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/core/sysfs.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
--- a/drivers/usb/core/sysfs.c
+++ b/drivers/usb/core/sysfs.c
@@ -899,10 +899,15 @@ bos_descriptors_read(struct file *filp,
{
struct device *dev = kobj_to_dev(kobj);
struct usb_device *udev = to_usb_device(dev);
- struct usb_host_bos *bos = udev->bos;
+ struct usb_host_bos *bos;
struct usb_bos_descriptor *desc;
size_t desclen, n = 0;
+ int rc;
+ rc = usb_lock_device_interruptible(udev);
+ if (rc < 0)
+ return -EINTR;
+ bos = udev->bos;
if (bos) {
desc = bos->desc;
desclen = le16_to_cpu(desc->wTotalLength);
@@ -911,6 +916,7 @@ bos_descriptors_read(struct file *filp,
memcpy(buf, (void *) desc + off, n);
}
}
+ usb_unlock_device(udev);
return n;
}
static const BIN_ATTR_RO(bos_descriptors, 65535); /* max-size BOS */
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 140/675] wifi: at76c50x-usb: avoid length underflow in at76_guess_freq()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (138 preceding siblings ...)
2026-07-30 14:07 ` [PATCH 6.18 139/675] usb: core: sysfs: add lock to bos_descriptors_read() Greg Kroah-Hartman
@ 2026-07-30 14:07 ` Greg Kroah-Hartman
2026-07-30 14:07 ` [PATCH 6.18 141/675] usb: core: port: Deattach Type-C connector on component unbind Greg Kroah-Hartman
` (539 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:07 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Huihui Huang, Johannes Berg
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Huihui Huang <hhhuang@smu.edu.sg>
commit 61a799ffd1e5a4fd3702d547828b7ff3d161468e upstream.
at76_guess_freq() checks only that the received frame is at least a bare
802.11 header (24 bytes) before subtracting the fixed management-body
offset:
len -= el_off;
For both beacon and probe response frames, el_off is 36. If the frame is
shorter than el_off, subtracting it causes the calculated IE length to
wrap. The length is eventually passed to cfg80211_find_elem_match() as a
very large unsigned value, so the element walk runs beyond the RX skb.
This path is reached from at76_rx_tasklet() while scanning. If the device
delivers a truncated beacon or probe response, the oversized IE length
causes an out-of-bounds read during scanning.
Skip the IE lookup if the frame does not reach the variable elements,
before subtracting el_off.
Fixes: 1264b951463a ("at76c50x-usb: add driver")
Cc: stable@vger.kernel.org
Assisted-by: Claude:claude-opus-4-8
Signed-off-by: Huihui Huang <hhhuang@smu.edu.sg>
Link: https://patch.msgid.link/20260715140815.1242033-1-hhhuang@smu.edu.sg
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/wireless/atmel/at76c50x-usb.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
--- a/drivers/net/wireless/atmel/at76c50x-usb.c
+++ b/drivers/net/wireless/atmel/at76c50x-usb.c
@@ -1521,13 +1521,16 @@ static inline int at76_guess_freq(struct
if (ieee80211_is_probe_resp(hdr->frame_control)) {
el_off = offsetof(struct ieee80211_mgmt, u.probe_resp.variable);
- el = ((struct ieee80211_mgmt *)hdr)->u.probe_resp.variable;
} else if (ieee80211_is_beacon(hdr->frame_control)) {
el_off = offsetof(struct ieee80211_mgmt, u.beacon.variable);
- el = ((struct ieee80211_mgmt *)hdr)->u.beacon.variable;
} else {
goto exit;
}
+
+ if (len < el_off)
+ goto exit;
+
+ el = priv->rx_skb->data + el_off;
len -= el_off;
el = cfg80211_find_ie(WLAN_EID_DS_PARAMS, el, len);
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 141/675] usb: core: port: Deattach Type-C connector on component unbind
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (139 preceding siblings ...)
2026-07-30 14:07 ` [PATCH 6.18 140/675] wifi: at76c50x-usb: avoid length underflow in at76_guess_freq() Greg Kroah-Hartman
@ 2026-07-30 14:07 ` Greg Kroah-Hartman
2026-07-30 14:07 ` [PATCH 6.18 142/675] usb: musb: omap2430: Do not put borrowed of_node in probe Greg Kroah-Hartman
` (538 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:07 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, stable, Chia-Lin Kao (AceLan),
Heikki Krogerus
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Chia-Lin Kao (AceLan) <acelan.kao@canonical.com>
commit e0b291fe117964037e0ba382eff4bb365d531c3a upstream.
connector_unbind() is the mirror of connector_bind(), but it is missing
the symmetric call to typec_deattach() that connector_bind() makes via:
if (port_dev->child)
typec_attach(port_dev->connector, &port_dev->child->dev);
When a Thunderbolt dock is unplugged, two teardown paths race:
1. The component framework calls connector_unbind() first, which sets
port_dev->connector = NULL without calling typec_deattach(). This
leaves port->usb2_dev/port->usb3_dev in struct typec_port pointing at
the USB device that is about to be freed.
2. usb_disconnect() then calls typec_deattach(port_dev->connector, ...),
but port_dev->connector is already NULL, so the call is a no-op and
port->usb2_dev is never cleared.
3. Concurrently, UCSI detects a PD partner-disconnect event and calls
typec_unregister_partner(), which reads port->usb2_dev (now a dangling
pointer to freed memory) and passes it to typec_partner_unlink_device()
-> sysfs_remove_link() -> dev_name() on the freed device, corrupting
the typec/UCSI partner state.
This corruption leaves the Thunderbolt tunnel in an inconsistent state on
the next dock hot-plug. On affected hardware the dock's I225/igc NIC fails
to enumerate: AER fires a slot reset while the igc driver is still
initialising ("PCIe link lost"), and the subsequent igc_reset attempt hits
igc_rd32 on an already-detached device:
igc 0000:2e:00.0 eth0: PCIe link lost, device now detached
igc: Failed to read reg 0x0!
WARNING: CPU: 9 PID: 129 at drivers/net/ethernet/intel/igc/igc_main.c:7005
igc_rd32+0xa4/0xc0 [igc]
Call Trace:
igc_disable_pcie_master+0x16/0xa0 [igc]
igc_reset_hw_base+0x14/0x170 [igc]
igc_reset+0x63/0x110 [igc]
igc_io_slot_reset+0x9e/0xd0 [igc]
report_slot_reset+0x5d/0xc0
pcie_do_recovery+0x209/0x400
aer_isr_one_error_type+0x235/0x430
aer_isr+0x4e/0x80
irq_thread+0xf4/0x1f0
4. UCSI later handles the PD partner-disconnect and calls
typec_unregister_partner(), which still sees the stale port->usb2_dev
and tries to remove its sysfs link a second time:
kernfs: can not remove 'typec', no directory
WARNING: CPU: 6 PID: 55 at fs/kernfs/dir.c:1706 kernfs_remove_by_name_ns+0xe9/0xf0
Workqueue: events ucsi_handle_connector_change [typec_ucsi]
Call Trace:
sysfs_remove_link+0x19/0x50
typec_unregister_partner+0x6e/0x120 [typec]
ucsi_unregister_partner+0x107/0x150 [typec_ucsi]
ucsi_handle_connector_change+0x3ec/0x490 [typec_ucsi]
process_one_work+0x18e/0x3e0
worker_thread+0x2e3/0x420
kthread+0x10a/0x230
ret_from_fork+0x121/0x140
ret_from_fork_asm+0x1a/0x30
With worse timing the same stale pointer is dereferenced after the
backing memory is freed, turning the warning into a use-after-free.
Fix the asymmetry: call typec_deattach() before clearing
port_dev->connector, matching what connector_bind() does on the bind side.
typec_partner_deattach() is already protected by port->partner_link_lock,
so it serialises safely with the concurrent typec_unregister_partner() path.
Fixes: 11110783f5ea ("usb: Inform the USB Type-C class about enumerated devices")
Cc: stable <stable@kernel.org>
Signed-off-by: Chia-Lin Kao (AceLan) <acelan.kao@canonical.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://patch.msgid.link/20260611071201.1235545-1-acelan.kao@canonical.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/core/port.c | 2 ++
1 file changed, 2 insertions(+)
--- a/drivers/usb/core/port.c
+++ b/drivers/usb/core/port.c
@@ -726,6 +726,8 @@ static void connector_unbind(struct devi
sysfs_remove_link(&connector->kobj, dev_name(dev));
sysfs_remove_link(&dev->kobj, "connector");
+ if (port_dev->child)
+ typec_deattach(port_dev->connector, &port_dev->child->dev);
port_dev->connector = NULL;
}
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 142/675] usb: musb: omap2430: Do not put borrowed of_node in probe
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (140 preceding siblings ...)
2026-07-30 14:07 ` [PATCH 6.18 141/675] usb: core: port: Deattach Type-C connector on component unbind Greg Kroah-Hartman
@ 2026-07-30 14:07 ` Greg Kroah-Hartman
2026-07-30 14:07 ` [PATCH 6.18 143/675] USB: storage: add NO_ATA_1X quirk for Longmai USB Key Greg Kroah-Hartman
` (537 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:07 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, stable, Johan Hovold, Guangshuo Li
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Guangshuo Li <lgs201920130244@gmail.com>
commit c947360ae63eee1c9eacc030dd6f5a53f717addf upstream.
omap2430_probe() stores pdev->dev.of_node in a local np variable. This is
a borrowed pointer and the probe function does not take a reference to
it.
The success and error paths nevertheless call of_node_put(np). This drops
a reference that is owned by the platform device, and can leave
pdev->dev.of_node with an unbalanced reference count.
Do not put the borrowed platform device node from omap2430_probe().
References taken for the child MUSB device are handled by the device core,
and the ctrl-module phandle reference is still released separately.
Fixes: ffbe2feac59b ("usb: musb: omap2430: Fix probe regression for missing resources")
Cc: stable <stable@kernel.org>
Reviewed-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Guangshuo Li <lgs201920130244@gmail.com>
Link: https://patch.msgid.link/20260713114711.955253-1-lgs201920130244@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/musb/omap2430.c | 2 --
1 file changed, 2 deletions(-)
--- a/drivers/usb/musb/omap2430.c
+++ b/drivers/usb/musb/omap2430.c
@@ -455,7 +455,6 @@ static int omap2430_probe(struct platfor
dev_err(&pdev->dev, "failed to register musb device\n");
goto err_disable_rpm;
}
- of_node_put(np);
return 0;
@@ -465,7 +464,6 @@ err_put_control_otghs:
if (!IS_ERR(glue->control_otghs))
put_device(glue->control_otghs);
err_put_musb:
- of_node_put(np);
platform_device_put(musb);
return ret;
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 143/675] USB: storage: add NO_ATA_1X quirk for Longmai USB Key
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (141 preceding siblings ...)
2026-07-30 14:07 ` [PATCH 6.18 142/675] usb: musb: omap2430: Do not put borrowed of_node in probe Greg Kroah-Hartman
@ 2026-07-30 14:07 ` Greg Kroah-Hartman
2026-07-30 14:07 ` [PATCH 6.18 144/675] usb: chipidea: fix usage_count leak when autosuspend_delay is negative Greg Kroah-Hartman
` (536 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:07 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Ai Chao, stable, Huang Wei,
Alan Stern
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Huang Wei <huangwei@kylinos.cn>
commit 3b4ca2e01c1dd8c00b675b794732945f460a471b upstream.
The Longmai Technologies USB Key (0x04b4:0xb708) advertises itself as a
SCSI/Bulk-only mass storage device but does not correctly handle ATA
pass-through commands. When such a command (ATA_12 or ATA_16) is sent to
the device it fails to respond and the transfer eventually times out,
leaving the device unusable.
Add an unusual_devs entry for this device that sets the US_FL_NO_ATA_1X
flag, so usb-storage short-circuits ATA pass-through commands and returns
INVALID COMMAND OPERATION CODE (0x20 0x05 0x24 0x00) instead of forwarding
them to the device.
Information about the device in /sys/kernel/debug/usb/devices:
T: Bus=02 Lev=01 Prnt=01 Port=01 Cnt=01 Dev#= 12 Spd=480 MxCh= 0
D: Ver= 2.00 Cls=00(>ifc ) Sub=06 Prot=50 MxPS=64 #Cfgs= 1
P: Vendor=04b4 ProdID=b708 Rev= 1.00
S: Manufacturer=Longmai Technologies
S: Product=USB Key
C:* #Ifs= 1 Cfg#= 1 Atr=80 MxPwr=100mA
I:* If#= 0 Alt= 0 #EPs= 2 Cls=08(stor.) Sub=06 Prot=50 Driver=usb-storage
E: Ad=81(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=02(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
Reported-by: Ai Chao <aichao@kylinos.cn>
Cc: stable <stable@kernel.org>
Signed-off-by: Huang Wei <huangwei@kylinos.cn>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Link: https://patch.msgid.link/20260716033341.2830872-1-huangwei@kylinos.cn
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/storage/unusual_devs.h | 7 +++++++
1 file changed, 7 insertions(+)
--- a/drivers/usb/storage/unusual_devs.h
+++ b/drivers/usb/storage/unusual_devs.h
@@ -395,6 +395,13 @@ UNUSUAL_DEV( 0x04b3, 0x4001, 0x0110, 0x
USB_SC_DEVICE, USB_PR_CB, NULL,
US_FL_MAX_SECTORS_MIN),
+/* Reported by Ai Chao <aichao@kylinos.cn> */
+UNUSUAL_DEV( 0x04b4, 0xb708, 0x0000, 0xffff,
+ "Longmai Technologies",
+ "USB Key",
+ USB_SC_SCSI, USB_PR_BULK, NULL,
+ US_FL_NO_ATA_1X),
+
/*
* Reported by Simon Levitt <simon@whattf.com>
* This entry needs Sub and Proto fields
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 144/675] usb: chipidea: fix usage_count leak when autosuspend_delay is negative
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (142 preceding siblings ...)
2026-07-30 14:07 ` [PATCH 6.18 143/675] USB: storage: add NO_ATA_1X quirk for Longmai USB Key Greg Kroah-Hartman
@ 2026-07-30 14:07 ` Greg Kroah-Hartman
2026-07-30 14:07 ` [PATCH 6.18 145/675] usb: gadget: dummy_hcd: prevent fifo_req reuse during giveback Greg Kroah-Hartman
` (535 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:07 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, stable, Xu Yang, Frank Li
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Xu Yang <xu.yang_2@nxp.com>
commit fc3afb5728e297994863f8a2a01b88a920bbf53e upstream.
The probe() calls pm_runtime_use_autosuspend(), but remove() does not call
pm_runtime_dont_use_autosuspend(). This can lead to a usage_count leak if
autosuspend_delay is set to a negative value.
The pm_runtime_use_autosuspend() also notes that it's important to undo
this with pm_runtime_dont_use_autosuspend() at driver exit time.
Fixes: 1f874edcb731 ("usb: chipidea: add runtime power management support")
Cc: stable <stable@kernel.org>
Assisted-by: Claude:claude-sonnet-4.6
Signed-off-by: Xu Yang <xu.yang_2@nxp.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Link: https://patch.msgid.link/20260716104126.2763454-1-xu.yang_2@oss.nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/chipidea/core.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/usb/chipidea/core.c
+++ b/drivers/usb/chipidea/core.c
@@ -1265,6 +1265,7 @@ static void ci_hdrc_remove(struct platfo
usb_role_switch_unregister(ci->role_switch);
if (ci->supports_runtime_pm) {
+ pm_runtime_dont_use_autosuspend(&pdev->dev);
pm_runtime_get_sync(&pdev->dev);
pm_runtime_disable(&pdev->dev);
pm_runtime_put_noidle(&pdev->dev);
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 145/675] usb: gadget: dummy_hcd: prevent fifo_req reuse during giveback
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (143 preceding siblings ...)
2026-07-30 14:07 ` [PATCH 6.18 144/675] usb: chipidea: fix usage_count leak when autosuspend_delay is negative Greg Kroah-Hartman
@ 2026-07-30 14:07 ` Greg Kroah-Hartman
2026-07-30 14:07 ` [PATCH 6.18 146/675] usb: gadget: f_midi: cancel pending IN work before freeing the midi object Greg Kroah-Hartman
` (534 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:07 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, syzbot+faf3a6cf579fc65591ca, stable,
Jinchao Wang, Alan Stern
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jinchao Wang <wangjinchao600@gmail.com>
commit d5e5cd3654d2b5359a12ea6586120f05b28634ee upstream.
dummy_hcd embeds a single shared usb_request (dum->fifo_req) that the
"emulated single-request FIFO" fast-path in dummy_queue() reuses for
small IN transfers: it copies the caller's request into it
(req->req = *_req) and queues it, treating list_empty(&fifo_req.queue)
as "the slot is free".
The completion side (dummy_timer/transfer/nuke/dummy_dequeue) follows
the standard pattern: list_del_init(&req->queue) unlinks the request,
then the lock is dropped and usb_gadget_giveback_request() invokes
req->complete(). But list_del_init() makes fifo_req.queue look empty
*before* the completion callback returns, so a concurrent dummy_queue()
on another CPU sees the slot as free, reuses fifo_req and runs
req->req = *_req -- overwriting req->complete while dummy_timer is
mid-calling it. The indirect call then jumps to a clobbered pointer,
causing a general protection fault / page fault in dummy_timer
(syzkaller extid faf3a6cf579fc65591ca). The clobbering write is an
in-bounds memcpy on a live shared object, so KASAN cannot flag it.
Add a fifo_req_busy bit covering the shared request's whole lifetime:
set it in dummy_queue() when the FIFO fast-path takes fifo_req (making
it the fast-path guard, replacing the list_empty(&fifo_req.queue)
test), and clear it after the completion callback has returned, via a
dummy_giveback() helper used at all four gadget-request giveback
sites. The shared slot can no longer be reused until its completion
callback has finished.
Reported-by: syzbot+faf3a6cf579fc65591ca@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=faf3a6cf579fc65591ca
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Cc: stable <stable@kernel.org>
Signed-off-by: Jinchao Wang <wangjinchao600@gmail.com>
Reviewed-by: Alan Stern <stern@rowland.harvard.edu>
Link: https://patch.msgid.link/5db8bba5b3499a86cd2e776f9918126b68b2508b.1784198306.git.wangjinchao600@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/gadget/udc/dummy_hcd.c | 40 ++++++++++++++++++++++++-------------
1 file changed, 27 insertions(+), 13 deletions(-)
--- a/drivers/usb/gadget/udc/dummy_hcd.c
+++ b/drivers/usb/gadget/udc/dummy_hcd.c
@@ -278,6 +278,7 @@ struct dummy {
unsigned ints_enabled:1;
unsigned udc_suspended:1;
unsigned pullup:1;
+ unsigned fifo_req_busy:1;
/*
* HOST side support
@@ -329,6 +330,26 @@ static inline struct dummy *gadget_dev_t
/* DEVICE/GADGET SIDE UTILITY ROUTINES */
+/*
+ * Give back a gadget request with dum->lock dropped around the callback.
+ * If @req is the shared fifo_req, clear fifo_req_busy afterward: the flag
+ * was set in dummy_queue() when the shared request was taken and must stay
+ * set until its completion callback has returned; list_del_init() alone
+ * makes the request look idle while the callback is still running.
+ * Caller holds dum->lock and has already done list_del_init() + status.
+ */
+static void dummy_giveback(struct dummy *dum, struct usb_ep *_ep,
+ struct dummy_request *req)
+{
+ bool fifo = req == &dum->fifo_req;
+
+ spin_unlock(&dum->lock);
+ usb_gadget_giveback_request(_ep, &req->req);
+ spin_lock(&dum->lock);
+ if (fifo)
+ dum->fifo_req_busy = 0;
+}
+
/* called with spinlock held */
static void nuke(struct dummy *dum, struct dummy_ep *ep)
{
@@ -339,9 +360,7 @@ static void nuke(struct dummy *dum, stru
list_del_init(&req->queue);
req->req.status = -ESHUTDOWN;
- spin_unlock(&dum->lock);
- usb_gadget_giveback_request(&ep->ep, &req->req);
- spin_lock(&dum->lock);
+ dummy_giveback(dum, &ep->ep, req);
}
}
@@ -728,10 +747,11 @@ static int dummy_queue(struct usb_ep *_e
/* implement an emulated single-request FIFO */
if (ep->desc && (ep->desc->bEndpointAddress & USB_DIR_IN) &&
- list_empty(&dum->fifo_req.queue) &&
+ !dum->fifo_req_busy &&
list_empty(&ep->queue) &&
_req->length <= FIFO_SIZE) {
req = &dum->fifo_req;
+ dum->fifo_req_busy = 1;
req->req = *_req;
req->req.buf = dum->fifo_buf;
memcpy(dum->fifo_buf, _req->buf, _req->length);
@@ -785,9 +805,7 @@ static int dummy_dequeue(struct usb_ep *
dev_dbg(udc_dev(dum),
"dequeued req %p from %s, len %d buf %p\n",
req, _ep->name, _req->length, _req->buf);
- spin_unlock(&dum->lock);
- usb_gadget_giveback_request(_ep, _req);
- spin_lock(&dum->lock);
+ dummy_giveback(dum, _ep, req);
}
spin_unlock_irqrestore(&dum->lock, flags);
return retval;
@@ -1523,9 +1541,7 @@ top:
if (req->req.status != -EINPROGRESS) {
list_del_init(&req->queue);
- spin_unlock(&dum->lock);
- usb_gadget_giveback_request(&ep->ep, &req->req);
- spin_lock(&dum->lock);
+ dummy_giveback(dum, &ep->ep, req);
/* requests might have been unlinked... */
rescan = 1;
@@ -1910,9 +1926,7 @@ restart:
dev_dbg(udc_dev(dum), "stale req = %p\n",
req);
- spin_unlock(&dum->lock);
- usb_gadget_giveback_request(&ep->ep, &req->req);
- spin_lock(&dum->lock);
+ dummy_giveback(dum, &ep->ep, req);
ep->already_seen = 0;
goto restart;
}
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 146/675] usb: gadget: f_midi: cancel pending IN work before freeing the midi object
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (144 preceding siblings ...)
2026-07-30 14:07 ` [PATCH 6.18 145/675] usb: gadget: dummy_hcd: prevent fifo_req reuse during giveback Greg Kroah-Hartman
@ 2026-07-30 14:07 ` Greg Kroah-Hartman
2026-07-30 14:07 ` [PATCH 6.18 147/675] usb: gadget: printer: fix infinite loop in printer_read() Greg Kroah-Hartman
` (533 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:07 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, stable, Fan Wu
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Fan Wu <fanwu01@zju.edu.cn>
commit 5650c18d93a1db7e27cb5a40b394747eb4686d5b upstream.
The f_midi driver embeds a work item (midi->work) whose handler,
f_midi_in_work(), dereferences the enclosing struct f_midi through
container_of(). This work is armed from two sites: f_midi_complete(),
on a normal IN-endpoint completion, and f_midi_in_trigger(), on an ALSA
rawmidi output-stream start.
Neither f_midi_disable() nor f_midi_unbind() cancels midi->work.
f_midi_disable() only disables the endpoints and drains the in_req_fifo;
it does not synchronize the work item, and the sound card is released
asynchronously to the final free of the midi object.
The midi object is reference-counted (midi->free_ref) and is freed in
f_midi_free() only once both the usb_function reference and the rawmidi
private_data reference have been dropped. In f_midi_unbind(),
f_midi_disable() runs before the sound card is released, so while the
USB endpoints are already disabled the rawmidi device is still usable by
an open substream. A concurrent userspace write on such a substream can
reach f_midi_in_trigger() and queue midi->work again after
f_midi_disable() has returned. A work item armed this way may still be
pending when the last reference drops and f_midi_free() proceeds to
kfree(midi), letting f_midi_in_work() dereference the struct after it
has been freed, a use-after-free.
For this reason cancelling midi->work in f_midi_disable() would not be
sufficient: the ALSA trigger path can rearm the work after disable()
returns. Cancelling at the refcount-zero free site is the boundary
after which neither arming source can survive, because by then both
references that keep the midi object alive have been dropped: the USB
endpoints are already disabled and the rawmidi device has been released.
Fix this by calling cancel_work_sync(&midi->work) in the refcount-zero
block of f_midi_free(), before the embedded work_struct is freed along
with the rest of the structure. opts->lock is a sleeping mutex, so
calling cancel_work_sync() under it is permitted, and the handler takes
midi->transmit_lock rather than opts->lock, so no self-deadlock can
occur while it waits for a running instance of the work to finish.
This issue was found by an in-house static analysis tool.
Fixes: 8653d71ce3763 ("usb/gadget: f_midi: Replace tasklet with work")
Cc: stable <stable@kernel.org>
Assisted-by: Codex:gpt-5.5
Signed-off-by: Fan Wu <fanwu01@zju.edu.cn>
Link: https://patch.msgid.link/20260709150717.399083-1-fanwu01@zju.edu.cn
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/gadget/function/f_midi.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/usb/gadget/function/f_midi.c
+++ b/drivers/usb/gadget/function/f_midi.c
@@ -1302,6 +1302,7 @@ static void f_midi_free(struct usb_funct
opts = container_of(f->fi, struct f_midi_opts, func_inst);
mutex_lock(&opts->lock);
if (!--midi->free_ref) {
+ cancel_work_sync(&midi->work);
kfree(midi->id);
kfifo_free(&midi->in_req_fifo);
kfree(midi);
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 147/675] usb: gadget: printer: fix infinite loop in printer_read()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (145 preceding siblings ...)
2026-07-30 14:07 ` [PATCH 6.18 146/675] usb: gadget: f_midi: cancel pending IN work before freeing the midi object Greg Kroah-Hartman
@ 2026-07-30 14:07 ` Greg Kroah-Hartman
2026-07-30 14:07 ` [PATCH 6.18 148/675] USB: gadget: snps-udc: fix device name leak on probe failure Greg Kroah-Hartman
` (532 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:07 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, stable, Peter Chen, Melbin K Mathew
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Melbin K Mathew <mlbnkm1@gmail.com>
commit c2e819be6a5c7f34344926b4bd7e3dfca58cf48a upstream.
printer_read() uses the same variable for the requested copy size and
the number of bytes actually copied to user space. copy_to_user()
returns the number of bytes not copied, so when it fails to copy
anything, the computed copied length becomes zero.
In that case len, buf, current_rx_bytes and current_rx_buf are left
unchanged. If RX data is available and the user buffer remains
unwritable, the read loop can repeat indefinitely.
Track the copied length separately and return -EFAULT, or the number of
bytes already copied, if an iteration makes no progress.
Fixes: b185f01a9ab7 ("usb: gadget: printer: factor out f_printer")
Cc: stable <stable@kernel.org>
Reviewed-by: Peter Chen <peter.chen@kernel.org>
Signed-off-by: Melbin K Mathew <mlbnkm1@gmail.com>
Link: https://patch.msgid.link/20260709205622.55700-1-mlbnkm1@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/gadget/function/f_printer.c | 23 ++++++++++++++++++-----
1 file changed, 18 insertions(+), 5 deletions(-)
--- a/drivers/usb/gadget/function/f_printer.c
+++ b/drivers/usb/gadget/function/f_printer.c
@@ -431,7 +431,7 @@ printer_read(struct file *fd, char __use
{
struct printer_dev *dev = fd->private_data;
unsigned long flags;
- size_t size;
+ size_t size, not_copied, copied;
size_t bytes_copied;
struct usb_request *req;
/* This is a pointer to the current USB rx request. */
@@ -524,10 +524,12 @@ printer_read(struct file *fd, char __use
else
size = len;
- size -= copy_to_user(buf, current_rx_buf, size);
- bytes_copied += size;
- len -= size;
- buf += size;
+ not_copied = copy_to_user(buf, current_rx_buf, size);
+ copied = size - not_copied;
+
+ bytes_copied += copied;
+ len -= copied;
+ buf += copied;
spin_lock_irqsave(&dev->lock, flags);
@@ -542,6 +544,17 @@ printer_read(struct file *fd, char __use
if (dev->interface < 0)
goto out_disabled;
+ if (!copied) {
+ dev->current_rx_req = current_rx_req;
+ dev->current_rx_bytes = current_rx_bytes;
+ dev->current_rx_buf = current_rx_buf;
+ spin_unlock_irqrestore(&dev->lock, flags);
+ mutex_unlock(&dev->lock_printer_io);
+ return bytes_copied ? bytes_copied : -EFAULT;
+ }
+
+ size = copied;
+
/* If we not returning all the data left in this RX request
* buffer then adjust the amount of data left in the buffer.
* Othewise if we are done with this RX request buffer then
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 148/675] USB: gadget: snps-udc: fix device name leak on probe failure
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (146 preceding siblings ...)
2026-07-30 14:07 ` [PATCH 6.18 147/675] usb: gadget: printer: fix infinite loop in printer_read() Greg Kroah-Hartman
@ 2026-07-30 14:07 ` Greg Kroah-Hartman
2026-07-30 14:07 ` [PATCH 6.18 149/675] USB: gadget: fsl-udc: " Greg Kroah-Hartman
` (531 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:07 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, stable, Johan Hovold
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Johan Hovold <johan@kernel.org>
commit 29a142d3e8b35ebc9e0bcc78f4bc26c9b6a9ac0b upstream.
The gadget device name is set by UDC core when registering the gadget
and must not be set before to avoid leaking the name in intermediate
error paths (e.g. when detecting an older chip revision).
Fixes: 12ad0fcaf2fb ("usb: gadget: amd5536udc: let udc-core manage gadget->dev")
Cc: stable <stable@kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://patch.msgid.link/20260702141536.90887-3-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/gadget/udc/snps_udc_core.c | 1 -
1 file changed, 1 deletion(-)
--- a/drivers/usb/gadget/udc/snps_udc_core.c
+++ b/drivers/usb/gadget/udc/snps_udc_core.c
@@ -3133,7 +3133,6 @@ int udc_probe(struct udc *dev)
/* device struct setup */
dev->gadget.ops = &udc_ops;
- dev_set_name(&dev->gadget.dev, "gadget");
dev->gadget.name = name;
dev->gadget.max_speed = USB_SPEED_HIGH;
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 149/675] USB: gadget: fsl-udc: fix device name leak on probe failure
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (147 preceding siblings ...)
2026-07-30 14:07 ` [PATCH 6.18 148/675] USB: gadget: snps-udc: fix device name leak on probe failure Greg Kroah-Hartman
@ 2026-07-30 14:07 ` Greg Kroah-Hartman
2026-07-30 14:08 ` [PATCH 6.18 150/675] USB: gadget: fsl-udc: fix dev_printk() device Greg Kroah-Hartman
` (530 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:07 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, stable, Johan Hovold
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Johan Hovold <johan@kernel.org>
commit 6b874d00c466e73c6448a89856407fe46b2f50e4 upstream.
The gadget device name is set by UDC core when registering the gadget
and must not be set before to avoid leaking the name in intermediate
error paths (e.g. on dma pool creation failure).
Fixes: eab35c4e6d95 ("usb: gadget: fsl_udc_core: let udc-core manage gadget->dev")
Cc: stable <stable@kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://patch.msgid.link/20260702141536.90887-2-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/gadget/udc/fsl_udc_core.c | 1 -
1 file changed, 1 deletion(-)
--- a/drivers/usb/gadget/udc/fsl_udc_core.c
+++ b/drivers/usb/gadget/udc/fsl_udc_core.c
@@ -2474,7 +2474,6 @@ static int fsl_udc_probe(struct platform
udc_controller->gadget.name = driver_name;
/* Setup gadget.dev and register with kernel */
- dev_set_name(&udc_controller->gadget.dev, "gadget");
udc_controller->gadget.dev.of_node = pdev->dev.of_node;
if (!IS_ERR_OR_NULL(udc_controller->transceiver))
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 150/675] USB: gadget: fsl-udc: fix dev_printk() device
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (148 preceding siblings ...)
2026-07-30 14:07 ` [PATCH 6.18 149/675] USB: gadget: fsl-udc: " Greg Kroah-Hartman
@ 2026-07-30 14:08 ` Greg Kroah-Hartman
2026-07-30 14:08 ` [PATCH 6.18 151/675] usb: gadget: f_ncm: validate datagram bounds in ncm_unwrap_ntb() Greg Kroah-Hartman
` (529 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:08 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, stable, Uwe Kleine-König,
Johan Hovold
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Johan Hovold <johan@kernel.org>
commit c4dd150fceab281496acb3a643ae712aacb74864 upstream.
A change replacing custom printk() macros with dev_printk() incorrectly
used the gadget struct device instead of the controller struct device
(including for messages printed before the gadget device name has been
initialised).
Switch to using the controller platform device with dev_printk() so that
the controller device and driver names are included in log messages as
expected.
Fixes: 6025f20f16c2 ("usb: gadget: fsl-udc: Replace custom log wrappers by dev_{err,warn,dbg,vdbg}")
Cc: stable <stable@kernel.org>
Cc: Uwe Kleine-König <u.kleine-koenig@baylibre.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Acked-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com>
Link: https://patch.msgid.link/20260702141536.90887-4-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/gadget/udc/fsl_udc_core.c | 92 +++++++++++++++-------------------
drivers/usb/gadget/udc/fsl_usb2_udc.h | 1
2 files changed, 43 insertions(+), 50 deletions(-)
--- a/drivers/usb/gadget/udc/fsl_udc_core.c
+++ b/drivers/usb/gadget/udc/fsl_udc_core.c
@@ -184,7 +184,7 @@ __acquires(ep->udc->lock)
usb_gadget_unmap_request(&ep->udc->gadget, &req->req, ep_is_in(ep));
if (status && (status != -ESHUTDOWN))
- dev_vdbg(&udc->gadget.dev, "complete %s req %p stat %d len %u/%u\n",
+ dev_vdbg(udc->dev, "complete %s req %p stat %d len %u/%u\n",
ep->ep.name, &req->req, status,
req->req.actual, req->req.length);
@@ -286,7 +286,7 @@ static int dr_controller_setup(struct fs
timeout = jiffies + FSL_UDC_RESET_TIMEOUT;
while (fsl_readl(&dr_regs->usbcmd) & USB_CMD_CTRL_RESET) {
if (time_after(jiffies, timeout)) {
- dev_err(&udc->gadget.dev, "udc reset timeout!\n");
+ dev_err(udc->dev, "udc reset timeout!\n");
return -ETIMEDOUT;
}
cpu_relax();
@@ -309,7 +309,7 @@ static int dr_controller_setup(struct fs
tmp &= USB_EP_LIST_ADDRESS_MASK;
fsl_writel(tmp, &dr_regs->endpointlistaddr);
- dev_vdbg(&udc->gadget.dev,
+ dev_vdbg(udc->dev,
"vir[qh_base] is %p phy[qh_base] is 0x%8x reg is 0x%8x\n",
udc->ep_qh, (int)tmp,
fsl_readl(&dr_regs->endpointlistaddr));
@@ -500,7 +500,7 @@ static void struct_ep_qh_setup(struct fs
tmp = max_pkt_len << EP_QUEUE_HEAD_MAX_PKT_LEN_POS;
break;
default:
- dev_vdbg(&udc->gadget.dev, "error ep type is %d\n", ep_type);
+ dev_vdbg(udc->dev, "error ep type is %d\n", ep_type);
return;
}
if (zlt)
@@ -613,7 +613,7 @@ static int fsl_ep_enable(struct usb_ep *
spin_unlock_irqrestore(&udc->lock, flags);
retval = 0;
- dev_vdbg(&udc->gadget.dev, "enabled %s (ep%d%s) maxpacket %d\n",
+ dev_vdbg(udc->dev, "enabled %s (ep%d%s) maxpacket %d\n",
ep->ep.name, ep->ep.desc->bEndpointAddress & 0x0f,
(desc->bEndpointAddress & USB_DIR_IN) ? "in" : "out",
max);
@@ -634,13 +634,8 @@ static int fsl_ep_disable(struct usb_ep
int ep_num;
ep = container_of(_ep, struct fsl_ep, ep);
- if (!_ep || !ep->ep.desc) {
- /*
- * dev_vdbg(&udc->gadget.dev, "%s not enabled\n",
- * _ep ? ep->ep.name : NULL);
- */
+ if (!_ep || !ep->ep.desc)
return -EINVAL;
- }
/* disable ep on controller */
ep_num = ep_index(ep);
@@ -664,7 +659,7 @@ static int fsl_ep_disable(struct usb_ep
ep->stopped = 1;
spin_unlock_irqrestore(&udc->lock, flags);
- dev_vdbg(&udc->gadget.dev, "disabled %s OK\n", _ep->name);
+ dev_vdbg(udc->dev, "disabled %s OK\n", _ep->name);
return 0;
}
@@ -724,9 +719,6 @@ static void fsl_queue_td(struct fsl_ep *
{
u32 temp, bitmask, tmp_stat;
- /* dev_vdbg(&udc->gadget.dev, "QH addr Register 0x%8x\n", dr_regs->endpointlistaddr);
- dev_vdbg(&udc->gadget.dev, "ep_qh[%d] addr is 0x%8x\n", i, (u32)&(ep->udc->ep_qh[i])); */
-
bitmask = ep_is_in(ep)
? (1 << (ep_index(ep) + 16))
: (1 << (ep_index(ep)));
@@ -813,7 +805,7 @@ static struct ep_td_struct *fsl_build_dt
*is_last = 0;
if ((*is_last) == 0)
- dev_vdbg(&udc_controller->gadget.dev, "multi-dtd request!\n");
+ dev_vdbg(udc_controller->dev, "multi-dtd request!\n");
/* Fill in the transfer size; set active bit */
swap_temp = ((*length << DTD_LENGTH_BIT_POS) | DTD_STATUS_ACTIVE);
@@ -825,7 +817,7 @@ static struct ep_td_struct *fsl_build_dt
mb();
- dev_vdbg(&udc_controller->gadget.dev, "length = %d address= 0x%x\n", *length, (int)*dma);
+ dev_vdbg(udc_controller->dev, "length = %d address= 0x%x\n", *length, (int)*dma);
return dtd;
}
@@ -876,11 +868,11 @@ fsl_ep_queue(struct usb_ep *_ep, struct
/* catch various bogus parameters */
if (!_req || !req->req.complete || !req->req.buf
|| !list_empty(&req->queue)) {
- dev_vdbg(&udc->gadget.dev, "%s, bad params\n", __func__);
+ dev_vdbg(udc->dev, "%s, bad params\n", __func__);
return -EINVAL;
}
if (unlikely(!ep->ep.desc)) {
- dev_vdbg(&udc->gadget.dev, "%s, bad ep\n", __func__);
+ dev_vdbg(udc->dev, "%s, bad ep\n", __func__);
return -EINVAL;
}
if (usb_endpoint_xfer_isoc(ep->ep.desc)) {
@@ -1040,7 +1032,7 @@ static int fsl_ep_set_halt(struct usb_ep
udc->ep0_dir = 0;
}
out:
- dev_vdbg(&udc->gadget.dev, "%s %s halt stat %d\n", ep->ep.name,
+ dev_vdbg(udc->dev, "%s %s halt stat %d\n", ep->ep.name,
value ? "set" : "clear", status);
return status;
@@ -1109,7 +1101,7 @@ static void fsl_ep_fifo_flush(struct usb
/* Wait until flush complete */
while (fsl_readl(&dr_regs->endptflush)) {
if (time_after(jiffies, timeout)) {
- dev_err(&udc_controller->gadget.dev,
+ dev_err(udc_controller->dev,
"ep flush timeout\n");
return;
}
@@ -1182,7 +1174,7 @@ static int fsl_vbus_session(struct usb_g
udc = container_of(gadget, struct fsl_udc, gadget);
spin_lock_irqsave(&udc->lock, flags);
- dev_vdbg(&gadget->dev, "VBUS %s\n", str_on_off(is_active));
+ dev_vdbg(udc->dev, "VBUS %s\n", str_on_off(is_active));
udc->vbus_active = (is_active != 0);
if (can_pullup(udc))
fsl_writel((fsl_readl(&dr_regs->usbcmd) | USB_CMD_RUN_STOP),
@@ -1548,7 +1540,7 @@ static void ep0_req_complete(struct fsl_
udc->ep0_state = WAIT_FOR_SETUP;
break;
case WAIT_FOR_SETUP:
- dev_err(&udc->gadget.dev, "Unexpected ep0 packets\n");
+ dev_err(udc->dev, "Unexpected ep0 packets\n");
break;
default:
ep0stall(udc);
@@ -1617,7 +1609,7 @@ static int process_ep_req(struct fsl_udc
errors = hc32_to_cpu(curr_td->size_ioc_sts);
if (errors & DTD_ERROR_MASK) {
if (errors & DTD_STATUS_HALTED) {
- dev_err(&udc->gadget.dev, "dTD error %08x QH=%d\n", errors, pipe);
+ dev_err(udc->dev, "dTD error %08x QH=%d\n", errors, pipe);
/* Clear the errors and Halt condition */
tmp = hc32_to_cpu(curr_qh->size_ioc_int_sts);
tmp &= ~errors;
@@ -1628,26 +1620,26 @@ static int process_ep_req(struct fsl_udc
break;
}
if (errors & DTD_STATUS_DATA_BUFF_ERR) {
- dev_vdbg(&udc->gadget.dev, "Transfer overflow\n");
+ dev_vdbg(udc->dev, "Transfer overflow\n");
status = -EPROTO;
break;
} else if (errors & DTD_STATUS_TRANSACTION_ERR) {
- dev_vdbg(&udc->gadget.dev, "ISO error\n");
+ dev_vdbg(udc->dev, "ISO error\n");
status = -EILSEQ;
break;
} else
- dev_err(&udc->gadget.dev,
+ dev_err(udc->dev,
"Unknown error has occurred (0x%x)!\n",
errors);
} else if (hc32_to_cpu(curr_td->size_ioc_sts)
& DTD_STATUS_ACTIVE) {
- dev_vdbg(&udc->gadget.dev, "Request not complete\n");
+ dev_vdbg(udc->dev, "Request not complete\n");
status = REQ_UNCOMPLETE;
return status;
} else if (remaining_length) {
if (direction) {
- dev_vdbg(&udc->gadget.dev,
+ dev_vdbg(udc->dev,
"Transmit dTD remaining length not zero\n");
status = -EPROTO;
break;
@@ -1655,8 +1647,7 @@ static int process_ep_req(struct fsl_udc
break;
}
} else {
- dev_vdbg(&udc->gadget.dev,
- "dTD transmitted successful\n");
+ dev_vdbg(udc->dev, "dTD transmitted successful\n");
}
if (j != curr_req->dtd_count - 1)
@@ -1699,7 +1690,7 @@ static void dtd_complete_irq(struct fsl_
/* If the ep is configured */
if (!curr_ep->ep.name) {
- dev_warn(&udc->gadget.dev, "Invalid EP?\n");
+ dev_warn(udc->dev, "Invalid EP?\n");
continue;
}
@@ -1708,7 +1699,7 @@ static void dtd_complete_irq(struct fsl_
queue) {
status = process_ep_req(udc, i, curr_req);
- dev_vdbg(&udc->gadget.dev,
+ dev_vdbg(udc->dev,
"status of process_ep_req= %d, ep = %d\n",
status, ep_num);
if (status == REQ_UNCOMPLETE)
@@ -1829,7 +1820,7 @@ static void reset_irq(struct fsl_udc *ud
while (fsl_readl(&dr_regs->endpointprime)) {
/* Wait until all endptprime bits cleared */
if (time_after(jiffies, timeout)) {
- dev_err(&udc->gadget.dev, "Timeout for reset\n");
+ dev_err(udc->dev, "Timeout for reset\n");
break;
}
cpu_relax();
@@ -1839,7 +1830,7 @@ static void reset_irq(struct fsl_udc *ud
fsl_writel(0xffffffff, &dr_regs->endptflush);
if (fsl_readl(&dr_regs->portsc1) & PORTSCX_PORT_RESET) {
- dev_vdbg(&udc->gadget.dev, "Bus reset\n");
+ dev_vdbg(udc->dev, "Bus reset\n");
/* Bus is reseting */
udc->bus_reset = 1;
/* Reset all the queues, include XD, dTD, EP queue
@@ -1847,7 +1838,7 @@ static void reset_irq(struct fsl_udc *ud
reset_queues(udc, true);
udc->usb_state = USB_STATE_DEFAULT;
} else {
- dev_vdbg(&udc->gadget.dev, "Controller reset\n");
+ dev_vdbg(udc->dev, "Controller reset\n");
/* initialize usb hw reg except for regs for EP, not
* touch usbintr reg */
dr_controller_setup(udc);
@@ -1881,7 +1872,7 @@ static irqreturn_t fsl_udc_irq(int irq,
/* Clear notification bits */
fsl_writel(irq_src, &dr_regs->usbsts);
- /* dev_vdbg(&udc->gadget.dev, "irq_src [0x%8x]", irq_src); */
+ /* dev_vdbg(udc->dev, "irq_src [0x%8x]", irq_src); */
/* Need to resume? */
if (udc->usb_state == USB_STATE_SUSPENDED)
@@ -1890,7 +1881,7 @@ static irqreturn_t fsl_udc_irq(int irq,
/* USB Interrupt */
if (irq_src & USB_STS_INT) {
- dev_vdbg(&udc->gadget.dev, "Packet int\n");
+ dev_vdbg(udc->dev, "Packet int\n");
/* Setup package, we only support ep0 as control ep */
if (fsl_readl(&dr_regs->endptsetupstat) & EP_SETUP_STATUS_EP0) {
tripwire_handler(udc, 0,
@@ -1919,7 +1910,7 @@ static irqreturn_t fsl_udc_irq(int irq,
/* Reset Received */
if (irq_src & USB_STS_RESET) {
- dev_vdbg(&udc->gadget.dev, "reset int\n");
+ dev_vdbg(udc->dev, "reset int\n");
reset_irq(udc);
status = IRQ_HANDLED;
}
@@ -1931,7 +1922,7 @@ static irqreturn_t fsl_udc_irq(int irq,
}
if (irq_src & (USB_STS_ERR | USB_STS_SYS_ERR)) {
- dev_vdbg(&udc->gadget.dev, "Error IRQ %x\n", irq_src);
+ dev_vdbg(udc->dev, "Error IRQ %x\n", irq_src);
}
spin_unlock_irqrestore(&udc->lock, flags);
@@ -1967,7 +1958,7 @@ static int fsl_udc_start(struct usb_gadg
udc_controller->transceiver->otg,
&udc_controller->gadget);
if (retval < 0) {
- dev_err(&udc_controller->gadget.dev, "can't bind to transceiver\n");
+ dev_err(udc_controller->dev, "can't bind to transceiver\n");
udc_controller->driver = NULL;
return retval;
}
@@ -2252,7 +2243,7 @@ static int struct_udc_setup(struct fsl_u
udc->eps = kcalloc(udc->max_ep, sizeof(struct fsl_ep), GFP_KERNEL);
if (!udc->eps) {
- dev_err(&udc->gadget.dev, "kmalloc udc endpoint status failed\n");
+ dev_err(udc->dev, "kmalloc udc endpoint status failed\n");
goto eps_alloc_failed;
}
@@ -2267,7 +2258,7 @@ static int struct_udc_setup(struct fsl_u
udc->ep_qh = dma_alloc_coherent(&pdev->dev, size,
&udc->ep_qh_dma, GFP_KERNEL);
if (!udc->ep_qh) {
- dev_err(&udc->gadget.dev, "malloc QHs for udc failed\n");
+ dev_err(udc->dev, "malloc QHs for udc failed\n");
goto ep_queue_alloc_failed;
}
@@ -2278,14 +2269,14 @@ static int struct_udc_setup(struct fsl_u
udc->status_req = container_of(fsl_alloc_request(NULL, GFP_KERNEL),
struct fsl_req, req);
if (!udc->status_req) {
- dev_err(&udc->gadget.dev, "kzalloc for udc status request failed\n");
+ dev_err(udc->dev, "kzalloc for udc status request failed\n");
goto udc_status_alloc_failed;
}
/* allocate a small amount of memory to get valid address */
udc->status_req->req.buf = kmalloc(8, GFP_KERNEL);
if (!udc->status_req->req.buf) {
- dev_err(&udc->gadget.dev, "kzalloc for udc request buffer failed\n");
+ dev_err(udc->dev, "kzalloc for udc request buffer failed\n");
goto udc_req_buf_alloc_failed;
}
@@ -2373,6 +2364,7 @@ static int fsl_udc_probe(struct platform
if (udc_controller == NULL)
return -ENOMEM;
+ udc_controller->dev = &pdev->dev;
pdata = dev_get_platdata(&pdev->dev);
udc_controller->pdata = pdata;
spin_lock_init(&udc_controller->lock);
@@ -2382,7 +2374,7 @@ static int fsl_udc_probe(struct platform
if (pdata->operating_mode == FSL_USB2_DR_OTG) {
udc_controller->transceiver = usb_get_phy(USB_PHY_TYPE_USB2);
if (IS_ERR_OR_NULL(udc_controller->transceiver)) {
- dev_err(&udc_controller->gadget.dev, "Can't find OTG driver!\n");
+ dev_err(&pdev->dev, "Can't find OTG driver!\n");
ret = -ENODEV;
goto err_kfree;
}
@@ -2398,7 +2390,7 @@ static int fsl_udc_probe(struct platform
if (pdata->operating_mode == FSL_USB2_DR_DEVICE) {
if (!request_mem_region(res->start, resource_size(res),
driver_name)) {
- dev_err(&udc_controller->gadget.dev, "request mem region for %s failed\n", pdev->name);
+ dev_err(&pdev->dev, "failed to request mem region\n");
ret = -EBUSY;
goto err_kfree;
}
@@ -2429,7 +2421,7 @@ static int fsl_udc_probe(struct platform
/* Read Device Controller Capability Parameters register */
dccparams = fsl_readl(&dr_regs->dccparams);
if (!(dccparams & DCCPARAMS_DC)) {
- dev_err(&udc_controller->gadget.dev, "This SOC doesn't support device role\n");
+ dev_err(&pdev->dev, "This SOC doesn't support device role\n");
ret = -ENODEV;
goto err_exit;
}
@@ -2447,14 +2439,14 @@ static int fsl_udc_probe(struct platform
ret = request_irq(udc_controller->irq, fsl_udc_irq, IRQF_SHARED,
driver_name, udc_controller);
if (ret != 0) {
- dev_err(&udc_controller->gadget.dev, "cannot request irq %d err %d\n",
+ dev_err(&pdev->dev, "cannot request irq %d err %d\n",
udc_controller->irq, ret);
goto err_exit;
}
/* Initialize the udc structure including QH member and other member */
if (struct_udc_setup(udc_controller, pdev)) {
- dev_err(&udc_controller->gadget.dev, "Can't initialize udc data structure\n");
+ dev_err(&pdev->dev, "Can't initialize udc data structure\n");
ret = -ENOMEM;
goto err_free_irq;
}
--- a/drivers/usb/gadget/udc/fsl_usb2_udc.h
+++ b/drivers/usb/gadget/udc/fsl_usb2_udc.h
@@ -470,6 +470,7 @@ struct fsl_ep {
#define EP_DIR_OUT 0
struct fsl_udc {
+ struct device *dev;
struct usb_gadget gadget;
struct usb_gadget_driver *driver;
struct fsl_usb2_platform_data *pdata;
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 151/675] usb: gadget: f_ncm: validate datagram bounds in ncm_unwrap_ntb()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (149 preceding siblings ...)
2026-07-30 14:08 ` [PATCH 6.18 150/675] USB: gadget: fsl-udc: fix dev_printk() device Greg Kroah-Hartman
@ 2026-07-30 14:08 ` Greg Kroah-Hartman
2026-07-30 14:08 ` [PATCH 6.18 152/675] usb: gadget: udc: bdc: free IRQ and drain func_wake_notify before teardown Greg Kroah-Hartman
` (528 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:08 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, stable, Sonali Pradhan
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Sonali Pradhan <sonalipradhan@google.com>
commit 1febec7e47cdcd01f43fb0211094e3010474666e upstream.
When unpacking host-supplied NTBs, ncm_unwrap_ntb() checks datagram length
against frame_max but does not verify that the datagram fits within the
declared block length. Additionally, when decoding multiple NTBs from a
single socket buffer, subsequent block lengths are not checked against the
actual remaining buffer data.
With these checks missing, a malicious USB host can specify datagram
offsets and lengths that point beyond the block, or supply secondary NTB
headers declaring lengths larger than the buffer. skb_put_data() then
copies adjacent kernel memory from skb_shared_info into the network skb.
Fix this by verifying that sufficient buffer space remains for the NTB
header before parsing, handling zero-length block declarations, ensuring
that block lengths never exceed the remaining buffer space, and verifying
that each datagram payload stays strictly within the block boundary.
Fixes: 427694cfaafa ("usb: gadget: ncm: Handle decoding of multiple NTB's in unwrap call")
Fixes: 2b74b0a04d3e ("USB: gadget: f_ncm: add bounds checks to ncm_unwrap_ntb()")
Cc: stable <stable@kernel.org>
Assisted-by: Jetski:Gemini-2.5-Pro
Signed-off-by: Sonali Pradhan <sonalipradhan@google.com>
Link: https://patch.msgid.link/20260703083725.1903850-1-sonalipradhan@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/gadget/function/f_ncm.c | 17 +++++++++++++----
1 file changed, 13 insertions(+), 4 deletions(-)
--- a/drivers/usb/gadget/function/f_ncm.c
+++ b/drivers/usb/gadget/function/f_ncm.c
@@ -1189,6 +1189,10 @@ static int ncm_unwrap_ntb(struct gether
frame_max = ncm_opts->max_segment_size;
parse_ntb:
+ if (to_process < (int)opts->nth_size) {
+ INFO(port->func.config->cdev, "Packet too small for headers\n");
+ goto err;
+ }
tmp = (__le16 *)ntb_ptr;
/* dwSignature */
@@ -1209,8 +1213,12 @@ parse_ntb:
tmp++; /* skip wSequence */
block_len = get_ncm(&tmp, opts->block_length);
+ if (block_len == 0)
+ block_len = to_process;
+
/* (d)wBlockLength */
- if ((block_len < opts->nth_size + opts->ndp_size) || (block_len > ntb_max)) {
+ if ((block_len < opts->nth_size + opts->ndp_size) || (block_len > ntb_max) ||
+ (block_len > to_process)) {
INFO(port->func.config->cdev, "Bad block length: %#X\n", block_len);
goto err;
}
@@ -1273,7 +1281,7 @@ parse_ntb:
index = index2;
/* wDatagramIndex[0] */
if ((index < opts->nth_size) ||
- (index > block_len - opts->dpe_size)) {
+ (index > block_len)) {
INFO(port->func.config->cdev,
"Bad index: %#X\n", index);
goto err;
@@ -1285,7 +1293,8 @@ parse_ntb:
* ethernet hdr + crc or larger than max frame size
*/
if ((dg_len < 14 + crc_len) ||
- (dg_len > frame_max)) {
+ (dg_len > frame_max) ||
+ (dg_len > block_len - index)) {
INFO(port->func.config->cdev,
"Bad dgram length: %#X\n", dg_len);
goto err;
@@ -1310,7 +1319,7 @@ parse_ntb:
dg_len2 = get_ncm(&tmp, opts->dgram_item_len);
/* wDatagramIndex[1] */
- if (index2 > block_len - opts->dpe_size) {
+ if (index2 > block_len) {
INFO(port->func.config->cdev,
"Bad index: %#X\n", index2);
goto err;
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 152/675] usb: gadget: udc: bdc: free IRQ and drain func_wake_notify before teardown
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (150 preceding siblings ...)
2026-07-30 14:08 ` [PATCH 6.18 151/675] usb: gadget: f_ncm: validate datagram bounds in ncm_unwrap_ntb() Greg Kroah-Hartman
@ 2026-07-30 14:08 ` Greg Kroah-Hartman
2026-07-30 14:08 ` [PATCH 6.18 153/675] usb: gadget: uvc: clamp SEND_RESPONSE length to the response buffer Greg Kroah-Hartman
` (527 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:08 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, stable, Fan Wu
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Fan Wu <fanwu01@zju.edu.cn>
commit 0583f2fbf8f86ae3a0ce054f96783dd83e65d9bb upstream.
The Broadcom BDC UDC driver registers its IRQ handler with
devm_request_irq() in bdc_udc_init(), so the IRQ is released by devm
only after bdc_remove() returns. devm releases resources in reverse
LIFO order, but bdc_remove() runs bdc_udc_exit() and bdc_hw_exit() ->
bdc_mem_free() manually before returning: bdc_udc_exit() tears down
individual endpoint objects via bdc_free_ep(), while bdc_hw_exit() ->
bdc_mem_free() frees and NULLs the DMA-coherent status-report ring
(bdc->srr.sr_bds) and kfree()s bdc->bdc_ep_array. Both happen while
the IRQ handler (bdc_udc_interrupt, requested with IRQF_SHARED)
remains deliverable in the window up to the post-remove devm
free_irq().
On receipt of a shared interrupt in that window, bdc_udc_interrupt()
dereferences bdc->srr.sr_bds[bdc->srr.dqp_index] (NULL or freed DMA)
and dispatches sr_handler callbacks that index into bdc_ep_array,
causing a NULL-deref or use-after-free.
The same window affects the delayed_work bdc->func_wake_notify, which is
armed from the IRQ handler via bdc_sr_uspc() -> handle_link_state_change()
-> schedule_delayed_work() and may self-rearm from its own callback
bdc_func_wake_timer(). No cancel exists anywhere in the driver, so a
queued work item that fires after bdc_remove() returns and the bdc
structure is devm-freed dereferences freed memory.
Replace devm_request_irq() with request_irq() and add an explicit
free_irq(bdc->irq, bdc) in bdc_remove(). Clear BDC_GIE before
free_irq() to stop the device from asserting interrupts, then
free_irq() drains any in-flight handler, then cancel_delayed_work_sync()
drains the func_wake_notify delayed work. This ordering ensures the
IRQ handler and delayed work cannot interfere with the subsequent
endpoint and DMA teardown in bdc_udc_exit() and bdc_hw_exit(). Wire the
matching free_irq() into the bdc_udc_init() error path so the IRQ is
released on probe failure, and route the bdc_init_ep() failure through
err0 instead of returning directly.
This issue was found by an in-house static analysis tool.
Fixes: efed421a94e6 ("usb: gadget: Add UDC driver for Broadcom USB3.0 device controller IP BDC")
Cc: stable <stable@kernel.org>
Assisted-by: Codex:gpt-5.5
Signed-off-by: Fan Wu <fanwu01@zju.edu.cn>
Link: https://patch.msgid.link/20260709020904.502611-1-fanwu01@zju.edu.cn
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/gadget/udc/bdc/bdc_core.c | 20 ++++++++++++++++++++
drivers/usb/gadget/udc/bdc/bdc_udc.c | 7 ++++---
2 files changed, 24 insertions(+), 3 deletions(-)
--- a/drivers/usb/gadget/udc/bdc/bdc_core.c
+++ b/drivers/usb/gadget/udc/bdc/bdc_core.c
@@ -586,9 +586,29 @@ disable_clk:
static void bdc_remove(struct platform_device *pdev)
{
struct bdc *bdc;
+ unsigned long flags;
+ u32 temp;
bdc = platform_get_drvdata(pdev);
dev_dbg(bdc->dev, "%s ()\n", __func__);
+ /*
+ * Disable the device interrupt source before freeing the IRQ:
+ * clear BDC_GIE so the controller stops asserting interrupts,
+ * then free_irq drains any in-flight handler.
+ */
+ spin_lock_irqsave(&bdc->lock, flags);
+ temp = bdc_readl(bdc->regs, BDC_BDCSC);
+ temp &= ~BDC_GIE;
+ bdc_writel(bdc->regs, BDC_BDCSC, temp);
+ spin_unlock_irqrestore(&bdc->lock, flags);
+ free_irq(bdc->irq, bdc);
+ /*
+ * Drain func_wake_notify after free_irq: the IRQ handler arms this
+ * delayed_work via bdc_sr_uspc -> handle_link_state_change ->
+ * schedule_delayed_work (self-rearmed in bdc_func_wake_timer), so
+ * the IRQ must be released first to prevent re-arm after cancel.
+ */
+ cancel_delayed_work_sync(&bdc->func_wake_notify);
bdc_udc_exit(bdc);
bdc_hw_exit(bdc);
bdc_phy_exit(bdc);
--- a/drivers/usb/gadget/udc/bdc/bdc_udc.c
+++ b/drivers/usb/gadget/udc/bdc/bdc_udc.c
@@ -530,8 +530,8 @@ int bdc_udc_init(struct bdc *bdc)
bdc->gadget.name = BRCM_BDC_NAME;
- ret = devm_request_irq(bdc->dev, bdc->irq, bdc_udc_interrupt,
- IRQF_SHARED, BRCM_BDC_NAME, bdc);
+ ret = request_irq(bdc->irq, bdc_udc_interrupt, IRQF_SHARED,
+ BRCM_BDC_NAME, bdc);
if (ret) {
dev_err(bdc->dev,
"failed to request irq #%d %d\n",
@@ -542,7 +542,7 @@ int bdc_udc_init(struct bdc *bdc)
ret = bdc_init_ep(bdc);
if (ret) {
dev_err(bdc->dev, "bdc init ep fail: %d\n", ret);
- return ret;
+ goto err0;
}
ret = usb_add_gadget_udc(bdc->dev, &bdc->gadget);
@@ -571,6 +571,7 @@ int bdc_udc_init(struct bdc *bdc)
err1:
usb_del_gadget_udc(&bdc->gadget);
err0:
+ free_irq(bdc->irq, bdc);
bdc_free_ep(bdc);
return ret;
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 153/675] usb: gadget: uvc: clamp SEND_RESPONSE length to the response buffer
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (151 preceding siblings ...)
2026-07-30 14:08 ` [PATCH 6.18 152/675] usb: gadget: udc: bdc: free IRQ and drain func_wake_notify before teardown Greg Kroah-Hartman
@ 2026-07-30 14:08 ` Greg Kroah-Hartman
2026-07-30 14:08 ` [PATCH 6.18 154/675] USB: serial: ftdi_sio: add support for E+H FXA291 Greg Kroah-Hartman
` (526 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:08 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, stable, Muhammad Bilal
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Muhammad Bilal <meatuni001@gmail.com>
commit b70dc75e85ba968b7b76eebfe5d63000080b875b upstream.
uvc_send_response() builds the UVC control response from a user-supplied
struct uvc_request_data:
req->length = min_t(unsigned int, uvc->event_length, data->length);
...
memcpy(req->buf, data->data, req->length);
req->length is clamped to uvc->event_length, which is taken from the
host control request wLength (up to UVC_MAX_REQUEST_SIZE, 64), and to
data->length, which comes from the UVCIOC_SEND_RESPONSE ioctl and is
only checked for being negative. The source buffer data->data is only
60 bytes, so a response with uvc->event_length and data->length both
greater than 60 makes memcpy() read past the end of data->data.
Clamp req->length to sizeof(data->data) as well.
Fixes: a5eaaa1f33e7 ("usb: gadget: uvc: use capped length value")
Cc: stable <stable@kernel.org>
Signed-off-by: Muhammad Bilal <meatuni001@gmail.com>
Link: https://patch.msgid.link/20260629195004.148405-1-meatuni001@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/gadget/function/uvc_v4l2.c | 2 ++
1 file changed, 2 insertions(+)
--- a/drivers/usb/gadget/function/uvc_v4l2.c
+++ b/drivers/usb/gadget/function/uvc_v4l2.c
@@ -200,6 +200,8 @@ uvc_send_response(struct uvc_device *uvc
return usb_ep_set_halt(cdev->gadget->ep0);
req->length = min_t(unsigned int, uvc->event_length, data->length);
+ if (req->length > sizeof(data->data))
+ req->length = sizeof(data->data);
req->zero = data->length < uvc->event_length;
memcpy(req->buf, data->data, req->length);
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 154/675] USB: serial: ftdi_sio: add support for E+H FXA291
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (152 preceding siblings ...)
2026-07-30 14:08 ` [PATCH 6.18 153/675] usb: gadget: uvc: clamp SEND_RESPONSE length to the response buffer Greg Kroah-Hartman
@ 2026-07-30 14:08 ` Greg Kroah-Hartman
2026-07-30 14:08 ` [PATCH 6.18 155/675] USB: serial: io_edgeport: cap received transmit credits Greg Kroah-Hartman
` (525 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:08 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Tim Pambor, Johan Hovold
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Tim Pambor <timpambor@gmail.com>
commit fad0fd120e29041b3e6cdf41bb12e3184fb524a2 upstream.
The Commubox FXA291 by Endress+Hauser AG is a USB serial converter
based on FT232B which is used to communicate with field devices.
It enumerates using the FTDI vendor ID and a custom PID.
usb 1-9: New USB device found, idVendor=0403, idProduct=e510, bcdDevice= 4.00
usb 1-9: New USB device strings: Mfr=1, Product=2, SerialNumber=0
usb 1-9: Product: FXA291
usb 1-9: Manufacturer: Endress+Hauser
usb 1-9: SerialNumber: 00000000
ftdi_sio 1-9:1.0: FTDI USB Serial Device converter detected
usb 1-9: Detected FT232B
usb 1-9: FTDI USB Serial Device converter now attached to ttyUSB0
Signed-off-by: Tim Pambor <timpambor@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/serial/ftdi_sio.c | 2 ++
drivers/usb/serial/ftdi_sio_ids.h | 5 +++++
2 files changed, 7 insertions(+)
--- a/drivers/usb/serial/ftdi_sio.c
+++ b/drivers/usb/serial/ftdi_sio.c
@@ -1075,6 +1075,8 @@ static const struct usb_device_id id_tab
{ USB_DEVICE_INTERFACE_NUMBER(ALTERA_VID, ALTERA_UB3_602E_PID, 3) },
/* Abacus Electrics */
{ USB_DEVICE(FTDI_VID, ABACUS_OPTICAL_PROBE_PID) },
+ /* Endress+Hauser AG devices */
+ { USB_DEVICE(FTDI_VID, FTDI_EH_FXA291_PID) },
{ } /* Terminating entry */
};
--- a/drivers/usb/serial/ftdi_sio_ids.h
+++ b/drivers/usb/serial/ftdi_sio_ids.h
@@ -314,6 +314,11 @@
#define FTDI_ELV_UIO88_PID 0xFB5F /* USB-I/O Interface (UIO 88) */
/*
+ * Endress+Hauser AG product ids (FTDI_VID)
+ */
+#define FTDI_EH_FXA291_PID 0xE510
+
+/*
* EVER Eco Pro UPS (http://www.ever.com.pl/)
*/
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 155/675] USB: serial: io_edgeport: cap received transmit credits
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (153 preceding siblings ...)
2026-07-30 14:08 ` [PATCH 6.18 154/675] USB: serial: ftdi_sio: add support for E+H FXA291 Greg Kroah-Hartman
@ 2026-07-30 14:08 ` Greg Kroah-Hartman
2026-07-30 14:08 ` [PATCH 6.18 156/675] USB: serial: keyspan_pda: fix data loss on receive throttling Greg Kroah-Hartman
` (524 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:08 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Sunho Park, Johan Hovold
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Sunho Park <shpark061104@gmail.com>
commit faaddd811c5099f11a5f52e68a6b31a5898cda4f upstream.
The interrupt-status packet reports transmit credits returned by the
device. edge_interrupt_callback() adds the 16-bit value to txCredits
without checking maxTxCredits.
edge_write() uses txCredits minus the software FIFO count as the amount
of data that fits. Since the FIFO is allocated with maxTxCredits bytes,
txCredits exceeding maxTxCredits can cause OOB write in ring buffer.
Cap accumulated credits at maxTxCredits. Conforming devices should never
hit the cap.
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Cc: stable@vger.kernel.org
Assisted-by: Codex:GPT-5
Signed-off-by: Sunho Park <shpark061104@gmail.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/serial/io_edgeport.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/usb/serial/io_edgeport.c
+++ b/drivers/usb/serial/io_edgeport.c
@@ -646,7 +646,8 @@ static void edge_interrupt_callback(stru
if (edge_port && edge_port->open) {
spin_lock_irqsave(&edge_port->ep_lock,
flags);
- edge_port->txCredits += txCredits;
+ edge_port->txCredits = min(edge_port->txCredits + txCredits,
+ edge_port->maxTxCredits);
spin_unlock_irqrestore(&edge_port->ep_lock,
flags);
dev_dbg(dev, "%s - txcredits for port%d = %d\n",
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 156/675] USB: serial: keyspan_pda: fix data loss on receive throttling
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (154 preceding siblings ...)
2026-07-30 14:08 ` [PATCH 6.18 155/675] USB: serial: io_edgeport: cap received transmit credits Greg Kroah-Hartman
@ 2026-07-30 14:08 ` Greg Kroah-Hartman
2026-07-30 14:08 ` [PATCH 6.18 157/675] USB: serial: option: add TDTECH MT5710-CN Greg Kroah-Hartman
` (523 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:08 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Johan Hovold
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Johan Hovold <johan@kernel.org>
commit 42a97c0480f96a2977e6d51ce512adc780f1ef5d upstream.
Killing the interrupt-in urb when the line disciple requests throttling
may lead to data loss if an ongoing transfer is cancelled.
Instead set a flag to prevent the completion handler from resubmitting
the urb until the port is unthrottled.
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Cc: stable@vger.kernel.org
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/serial/keyspan_pda.c | 44 +++++++++++++++++++++++++++++++--------
1 file changed, 35 insertions(+), 9 deletions(-)
--- a/drivers/usb/serial/keyspan_pda.c
+++ b/drivers/usb/serial/keyspan_pda.c
@@ -35,6 +35,8 @@ struct keyspan_pda_private {
struct work_struct unthrottle_work;
struct usb_serial *serial;
struct usb_serial_port *port;
+ bool throttled;
+ bool throttle_req;
};
static int keyspan_pda_write_start(struct usb_serial_port *port);
@@ -150,6 +152,7 @@ static void keyspan_pda_rx_interrupt(str
int retval;
int status = urb->status;
struct keyspan_pda_private *priv;
+ bool throttled = false;
unsigned long flags;
priv = usb_get_serial_port_data(port);
@@ -211,16 +214,24 @@ static void keyspan_pda_rx_interrupt(str
}
exit:
- retval = usb_submit_urb(urb, GFP_ATOMIC);
- if (retval)
- dev_err(&port->dev,
- "%s - usb_submit_urb failed with result %d\n",
- __func__, retval);
+ spin_lock_irqsave(&port->lock, flags);
+ if (priv->throttle_req) {
+ priv->throttled = true;
+ throttled = true;
+ }
+ spin_unlock_irqrestore(&port->lock, flags);
+
+ if (!throttled) {
+ retval = usb_submit_urb(urb, GFP_ATOMIC);
+ if (retval)
+ dev_err(&port->dev, "failed to resubmit in urb: %d\n", retval);
+ }
}
static void keyspan_pda_rx_throttle(struct tty_struct *tty)
{
struct usb_serial_port *port = tty->driver_data;
+ struct keyspan_pda_private *priv = usb_get_serial_port_data(port);
/*
* Stop receiving characters. We just turn off the URB request, and
@@ -230,16 +241,29 @@ static void keyspan_pda_rx_throttle(stru
* send an XOFF, although it might make sense to foist that off upon
* the device too.
*/
- usb_kill_urb(port->interrupt_in_urb);
+ spin_lock_irq(&port->lock);
+ priv->throttle_req = true;
+ spin_unlock_irq(&port->lock);
}
static void keyspan_pda_rx_unthrottle(struct tty_struct *tty)
{
struct usb_serial_port *port = tty->driver_data;
+ struct keyspan_pda_private *priv = usb_get_serial_port_data(port);
+ bool throttled;
+ int ret;
+
+ spin_lock_irq(&port->lock);
+ throttled = priv->throttled;
+ priv->throttled = false;
+ priv->throttle_req = false;
+ spin_unlock_irq(&port->lock);
- /* just restart the receive interrupt URB */
- if (usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL))
- dev_dbg(&port->dev, "usb_submit_urb(read urb) failed\n");
+ if (throttled) {
+ ret = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
+ if (ret)
+ dev_err(&port->dev, "failed to submit in urb: %d\n", ret);
+ }
}
static speed_t keyspan_pda_setbaud(struct usb_serial *serial, speed_t baud)
@@ -579,6 +603,8 @@ static int keyspan_pda_open(struct tty_s
spin_lock_irq(&port->lock);
priv->tx_room = rc;
+ priv->throttled = false;
+ priv->throttle_req = false;
spin_unlock_irq(&port->lock);
rc = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 157/675] USB: serial: option: add TDTECH MT5710-CN
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (155 preceding siblings ...)
2026-07-30 14:08 ` [PATCH 6.18 156/675] USB: serial: keyspan_pda: fix data loss on receive throttling Greg Kroah-Hartman
@ 2026-07-30 14:08 ` Greg Kroah-Hartman
2026-07-30 14:08 ` [PATCH 6.18 158/675] usb: typec: ucsi: Detect and skip duplicate altmodes from buggy firmware Greg Kroah-Hartman
` (522 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:08 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Chukun Pan, Johan Hovold
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Chukun Pan <amadeus@jmu.edu.cn>
commit 55645e4f3c6022ffb160ad3617d2b624eaa38501 upstream.
Add support for the TDTECH MT5710-CN (5G redcap) module based on the
Huawei HiSilicon Balong chip.
T: Bus=01 Lev=02 Prnt=02 Port=00 Cnt=01 Dev#= 3 Spd=480 MxCh= 0
D: Ver= 2.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1
P: Vendor=3466 ProdID=3301 Rev=ff.ff
S: Manufacturer=TD Tech Ltd.
S: Product=TDTECH MT571X
S: SerialNumber=0123456789ABCDEF
C:* #Ifs= 6 Cfg#= 1 Atr=c0 MxPwr= 0mA
A: FirstIf#= 0 IfCount= 2 Cls=02(comm.) Sub=0d Prot=00
I:* If#= 0 Alt= 0 #EPs= 1 Cls=02(comm.) Sub=0d Prot=00 Driver=cdc_ncm
E: Ad=82(I) Atr=03(Int.) MxPS= 16 Ivl=32ms
I: If#= 1 Alt= 0 #EPs= 0 Cls=0a(data ) Sub=00 Prot=01 Driver=cdc_ncm
I:* If#= 1 Alt= 1 #EPs= 2 Cls=0a(data ) Sub=00 Prot=01 Driver=cdc_ncm
E: Ad=81(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=01(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
I:* If#= 2 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=06 Prot=13 Driver=option
E: Ad=83(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=02(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
I:* If#= 3 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=06 Prot=12 Driver=option
E: Ad=84(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=03(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
I:* If#= 4 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=06 Prot=1c Driver=option
E: Ad=85(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=04(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
I:* If#= 5 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=06 Prot=14 Driver=option
E: Ad=86(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=05(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
Interface: ECM / NCM + DIAG + AT + SERIAL + GPS
Signed-off-by: Chukun Pan <amadeus@jmu.edu.cn>
Cc: stable@vger.kernel.org
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/serial/option.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/usb/serial/option.c
+++ b/drivers/usb/serial/option.c
@@ -2497,6 +2497,7 @@ static const struct usb_device_id option
.driver_info = RSVD(5) },
{ USB_DEVICE_INTERFACE_CLASS(0x33f8, 0x1003, 0xff), /* Rolling RW135R-GL (laptop MBIM) */
.driver_info = RSVD(5) },
+ { USB_DEVICE_INTERFACE_CLASS(0x3466, 0x3301, 0xff) }, /* TDTECH MT5710-CN */
{ USB_DEVICE_AND_INTERFACE_INFO(0x3731, 0x0100, 0xff, 0xff, 0x30) }, /* NetPrisma LCUK54-WWD for Global */
{ USB_DEVICE_AND_INTERFACE_INFO(0x3731, 0x0100, 0xff, 0x00, 0x40) },
{ USB_DEVICE_AND_INTERFACE_INFO(0x3731, 0x0100, 0xff, 0xff, 0x40) },
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 158/675] usb: typec: ucsi: Detect and skip duplicate altmodes from buggy firmware
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (156 preceding siblings ...)
2026-07-30 14:08 ` [PATCH 6.18 157/675] USB: serial: option: add TDTECH MT5710-CN Greg Kroah-Hartman
@ 2026-07-30 14:08 ` Greg Kroah-Hartman
2026-07-30 14:08 ` [PATCH 6.18 159/675] usb: typec: ucsi: Add duplicate detection to nvidia registration path Greg Kroah-Hartman
` (521 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:08 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, stable, Chia-Lin Kao (AceLan),
Heikki Krogerus
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Chia-Lin Kao (AceLan) <acelan.kao@canonical.com>
commit 67c92c6419ea6dbc5b1f3e9691aecea956e3e81c upstream.
Some firmware implementations incorrectly return the same altmode
multiple times at different offsets when queried via
UCSI_GET_ALTERNATE_MODES. This causes sysfs duplicate filename errors
and kernel call traces when the driver attempts to register the same
altmode twice:
sysfs: cannot create duplicate filename '/devices/.../typec/port0/port0.0/partner'
typec-thunderbolt port0-partner.1: failed to create symlinks
typec-thunderbolt port0-partner.1: probe with driver typec-thunderbolt failed with error -17
The matching rules differ by recipient:
- UCSI_RECIPIENT_CON (port) and UCSI_RECIPIENT_SOP_P (plug):
Two altmodes with identical SVID and VDO are byte-for-byte
duplicates and the second has no observable function, so drop it.
- UCSI_RECIPIENT_SOP (partner):
The typec class binds each partner altmode to a port altmode of
the same SVID via altmode_match()/device_find_child(), which
returns the first port altmode with a matching SVID. If the
partner advertises more altmodes for SVID X than the port
advertises, the surplus partner altmode(s) collapse onto an
already-paired port altmode and trigger the
"duplicate filename .../partner" sysfs error during
typec_altmode_create_links(). Use the port-side altmode count for
SVID X as the authoritative cap and reject any partner altmode
that would exceed it. This preserves legitimate multi-Mode
partner altmodes (vendor SVIDs that the port really does
advertise more than once) while filtering the firmware-generated
duplicates that have no port counterpart, and is therefore
stricter than a plain SVID+VDO comparison (which still admits the
Thunderbolt case where firmware reports the same SVID twice with
different VDOs) without being over-broad like a plain SVID match
(which would falsely drop legitimate vendor multi-Mode entries).
If a duplicate is detected, skip it and emit a clean warning instead
of generating a kernel call trace:
ucsi_acpi USBC000:00: con2: Firmware bug: duplicate partner altmode SVID 0x8087 at offset 1, ignoring.
ucsi_acpi USBC000:00: con2: VDO mismatch: 0x8087a043 vs 0x00000001
The duplicate detection logic lives in a reusable helper
ucsi_altmode_is_duplicate() and is invoked from
ucsi_register_altmodes(). It applies to all three recipient types:
partner (SOP), port (CON), and plug (SOP_P) altmodes.
Fixes: a79f16efcd00 ("usb: typec: ucsi: Add support for the partner USB Modes")
Cc: stable <stable@kernel.org>
Signed-off-by: Chia-Lin Kao (AceLan) <acelan.kao@canonical.com>
unchanged: still SVID+VDO exact-dup match.
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://patch.msgid.link/20260713084323.287516-1-acelan.kao@canonical.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/typec/ucsi/ucsi.c | 132 ++++++++++++++++++++++++++++++++++++++++++
1 file changed, 132 insertions(+)
--- a/drivers/usb/typec/ucsi/ucsi.c
+++ b/drivers/usb/typec/ucsi/ucsi.c
@@ -487,6 +487,129 @@ err:
return ret;
}
+static void ucsi_dump_duplicate_altmode(struct ucsi_connector *con,
+ u8 recipient, u16 svid,
+ u32 existing_vdo, u32 new_vdo,
+ int offset)
+{
+ static const char * const recipient_names[] = {
+ [UCSI_RECIPIENT_CON] = "port",
+ [UCSI_RECIPIENT_SOP] = "partner",
+ [UCSI_RECIPIENT_SOP_P] = "plug",
+ [UCSI_RECIPIENT_SOP_PP] = "cable plug prime",
+ };
+
+ dev_warn(con->ucsi->dev,
+ "con%d: Firmware bug: duplicate %s altmode SVID 0x%04x at offset %d, ignoring but please contact the BIOS vendor to fix this issue.\n",
+ con->num, recipient_names[recipient], svid, offset);
+
+ if (existing_vdo != new_vdo)
+ dev_warn(con->ucsi->dev,
+ "con%d: VDO mismatch: 0x%08x vs 0x%08x\n",
+ con->num, existing_vdo, new_vdo);
+}
+
+/* Count altmodes in @altmodes that advertise @svid. */
+static int ucsi_altmode_count_svid(struct typec_altmode **altmodes, u16 svid)
+{
+ int count = 0;
+ int k;
+
+ for (k = 0; k < UCSI_MAX_ALTMODES; k++) {
+ if (!altmodes[k])
+ break;
+ if (altmodes[k]->svid == svid)
+ count++;
+ }
+
+ return count;
+}
+
+/*
+ * Check if an altmode is a duplicate. Some firmware implementations
+ * incorrectly return the same altmode multiple times, causing sysfs errors.
+ * Returns true if the altmode should be skipped.
+ *
+ * The matching rules differ by recipient:
+ *
+ * - UCSI_RECIPIENT_CON (port) and UCSI_RECIPIENT_SOP_P (plug):
+ * Two altmodes with identical SVID and VDO are byte-for-byte duplicates
+ * and the second has no observable function. Drop them.
+ *
+ * - UCSI_RECIPIENT_SOP (partner):
+ * The typec class binds each partner altmode to a port altmode of the
+ * same SVID via altmode_match()/device_find_child(), which returns the
+ * first port altmode with a matching SVID. If the partner advertises
+ * more altmodes for SVID X than the port advertises, the surplus
+ * partner altmode(s) collapse onto an already-paired port altmode and
+ * trigger a "duplicate filename .../partner" sysfs error during
+ * typec_altmode_create_links(). Use the port-side altmode count for
+ * SVID X as the authoritative cap and reject any partner altmode that
+ * would exceed it. This preserves legitimate multi-Mode partner
+ * altmodes (e.g. vendor SVIDs that the port really does advertise
+ * twice) while filtering the firmware-generated duplicates that have
+ * no port counterpart.
+ */
+static bool ucsi_altmode_is_duplicate(struct ucsi_connector *con, u8 recipient,
+ const struct ucsi_altmode *alt_batch, int batch_idx,
+ u16 svid, u32 vdo, int offset)
+{
+ struct typec_altmode **altmodes;
+ int port_count, partner_count;
+ int k;
+
+ /* Check for duplicates within the current batch first */
+ for (k = 0; k < batch_idx; k++) {
+ if (alt_batch[k].svid == svid && alt_batch[k].mid == vdo) {
+ ucsi_dump_duplicate_altmode(con, recipient, svid,
+ vdo, vdo, offset);
+ return true;
+ }
+ }
+
+ switch (recipient) {
+ case UCSI_RECIPIENT_SOP:
+ /*
+ * Cap partner altmodes per SVID by the port-side count:
+ * any further partner altmode for that SVID would alias an
+ * already-paired port altmode and break typec sysfs.
+ */
+ port_count = ucsi_altmode_count_svid(con->port_altmode, svid);
+ partner_count = ucsi_altmode_count_svid(con->partner_altmode,
+ svid);
+ if (port_count && partner_count >= port_count) {
+ ucsi_dump_duplicate_altmode(con, recipient, svid,
+ con->partner_altmode[partner_count - 1]->vdo,
+ vdo, offset);
+ return true;
+ }
+ return false;
+ case UCSI_RECIPIENT_CON:
+ altmodes = con->port_altmode;
+ break;
+ case UCSI_RECIPIENT_SOP_P:
+ altmodes = con->plug_altmode;
+ break;
+ default:
+ return false;
+ }
+
+ /* CON and SOP_P: drop only exact SVID+VDO duplicates. */
+ for (k = 0; k < UCSI_MAX_ALTMODES; k++) {
+ if (!altmodes[k])
+ break;
+
+ if (altmodes[k]->svid != svid || altmodes[k]->vdo != vdo)
+ continue;
+
+ ucsi_dump_duplicate_altmode(con, recipient, svid,
+ altmodes[k]->vdo, vdo, offset);
+ return true;
+ }
+
+ return false;
+}
+
static int
ucsi_register_altmodes_nvidia(struct ucsi_connector *con, u8 recipient)
{
@@ -611,6 +734,15 @@ static int ucsi_register_altmodes(struct
if (!alt[j].svid)
return 0;
+ /*
+ * Check for duplicates in current batch and already
+ * registered altmodes. Skip if duplicate found.
+ */
+ if (ucsi_altmode_is_duplicate(con, recipient, alt, j,
+ alt[j].svid, alt[j].mid,
+ i - num + j))
+ continue;
+
memset(&desc, 0, sizeof(desc));
desc.vdo = alt[j].mid;
desc.svid = alt[j].svid;
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 159/675] usb: typec: ucsi: Add duplicate detection to nvidia registration path
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (157 preceding siblings ...)
2026-07-30 14:08 ` [PATCH 6.18 158/675] usb: typec: ucsi: Detect and skip duplicate altmodes from buggy firmware Greg Kroah-Hartman
@ 2026-07-30 14:08 ` Greg Kroah-Hartman
2026-07-30 14:08 ` [PATCH 6.18 160/675] wifi: mwifiex: fix freeze for 60 seconds caused by request_firmware Greg Kroah-Hartman
` (520 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:08 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, stable, Chia-Lin Kao (AceLan)
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Chia-Lin Kao (AceLan) <acelan.kao@canonical.com>
commit f1aa17f72f9b9589bd724dc826c5b17d164193d1 upstream.
Extend the duplicate altmode detection to ucsi_register_altmodes_nvidia()
which is used when a driver provides the update_altmodes() callback.
This ensures all drivers benefit from duplicate detection, whether they
use the standard registration path or the nvidia path with update_altmodes
callback.
Without this fix, drivers using the nvidia path (like yoga_c630) would
still encounter duplicate altmode registration errors from buggy firmware.
Fixes: a79f16efcd00 ("usb: typec: ucsi: Add support for the partner USB Modes")
Cc: stable <stable@kernel.org>
Signed-off-by: Chia-Lin Kao (AceLan) <acelan.kao@canonical.com>
Link: https://patch.msgid.link/20260713084323.287516-2-acelan.kao@canonical.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/typec/ucsi/ucsi.c | 26 ++++++++++++++++----------
1 file changed, 16 insertions(+), 10 deletions(-)
--- a/drivers/usb/typec/ucsi/ucsi.c
+++ b/drivers/usb/typec/ucsi/ucsi.c
@@ -664,19 +664,25 @@ ucsi_register_altmodes_nvidia(struct ucs
/* now register altmodes */
for (i = 0; i < max_altmodes; i++) {
- memset(&desc, 0, sizeof(desc));
- if (multi_dp) {
- desc.svid = updated[i].svid;
- desc.vdo = updated[i].mid;
- } else {
- desc.svid = orig[i].svid;
- desc.vdo = orig[i].mid;
- }
- desc.roles = TYPEC_PORT_DRD;
+ struct ucsi_altmode *altmode_array = multi_dp ? updated : orig;
- if (!desc.svid)
+ if (!altmode_array[i].svid)
return 0;
+ /*
+ * Check for duplicates in current array and already
+ * registered altmodes. Skip if duplicate found.
+ */
+ if (ucsi_altmode_is_duplicate(con, recipient, altmode_array, i,
+ altmode_array[i].svid,
+ altmode_array[i].mid, i))
+ continue;
+
+ memset(&desc, 0, sizeof(desc));
+ desc.svid = altmode_array[i].svid;
+ desc.vdo = altmode_array[i].mid;
+ desc.roles = TYPEC_PORT_DRD;
+
ret = ucsi_register_altmode(con, &desc, recipient);
if (ret)
return ret;
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 160/675] wifi: mwifiex: fix freeze for 60 seconds caused by request_firmware
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (158 preceding siblings ...)
2026-07-30 14:08 ` [PATCH 6.18 159/675] usb: typec: ucsi: Add duplicate detection to nvidia registration path Greg Kroah-Hartman
@ 2026-07-30 14:08 ` Greg Kroah-Hartman
2026-07-30 14:08 ` [PATCH 6.18 161/675] RISC-V: KVM: Serialize virtual interrupt pending state updates Greg Kroah-Hartman
` (519 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:08 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Georgi Valkov, Francesco Dolcini,
Johannes Berg, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Georgi Valkov <gvalkov@gmail.com>
[ Upstream commit 121a96c5a0db8d18e2ba2cb89660cca8a40508fe ]
Fix regression in rgpower table loading, caused by using
request_firmware(): when the requested firmware does not exist, e.g.
nxp/rgpower_WW.bin does not exist on OpenWRT builds for WRT3200ACM,
request_firmware() falls back to firmware_fallback_sysfs(), which expects
the firmware to be provided by user space using SYSFS. No such utility is
provided in this configuration, so the entire system locks up for 60
seconds, until the request times out. During this time, no other log
messages are observed, and the device does not respond to commands over
UART.
The request_firmware() call is performed in the following context:
current->comm kworker/1:2 in_task 1 irqs_disabled 0 in_atomic 0
Fixed by using request_firmware_direct(). This prevents fallback to SYSFS,
and avoids delay. The rgpower table is optional. The driver falls back
to the device tree power table if the firmware is not present.
The error code is printed for debugging and returned to the caller,
which only cares for success or failure, so there are no side effects.
Fixes: 7b6f16a25806 ("wifi: mwifiex: add rgpower table loading support")
Signed-off-by: Georgi Valkov <gvalkov@gmail.com>
Reviewed-by: Francesco Dolcini <francesco.dolcini@toradex.com>
Link: https://patch.msgid.link/20260712221709.7099-1-gvalkov@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/wireless/marvell/mwifiex/sta_ioctl.c | 14 ++++++++------
1 file changed, 8 insertions(+), 6 deletions(-)
diff --git a/drivers/net/wireless/marvell/mwifiex/sta_ioctl.c b/drivers/net/wireless/marvell/mwifiex/sta_ioctl.c
index ef6722ffdc74d8..358de94eeb5ed9 100644
--- a/drivers/net/wireless/marvell/mwifiex/sta_ioctl.c
+++ b/drivers/net/wireless/marvell/mwifiex/sta_ioctl.c
@@ -196,6 +196,7 @@ static int mwifiex_request_rgpower_table(struct mwifiex_private *priv)
struct mwifiex_adapter *adapter = priv->adapter;
char rgpower_table_name[30];
char country_code[3];
+ int ret;
strscpy(country_code, domain_info->country_code, sizeof(country_code));
@@ -214,16 +215,17 @@ static int mwifiex_request_rgpower_table(struct mwifiex_private *priv)
adapter->rgpower_data = NULL;
}
- if ((request_firmware(&adapter->rgpower_data, rgpower_table_name,
- adapter->dev))) {
+ ret = request_firmware_direct(&adapter->rgpower_data, rgpower_table_name,
+ adapter->dev);
+
+ if (ret) {
mwifiex_dbg(
adapter, INFO,
- "info: %s: failed to request regulatory power table\n",
- __func__);
- return -EIO;
+ "info: %s: failed to request regulatory power table: %d\n",
+ __func__, ret);
}
- return 0;
+ return ret;
}
static int mwifiex_dnld_rgpower_table(struct mwifiex_private *priv)
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 161/675] RISC-V: KVM: Serialize virtual interrupt pending state updates
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (159 preceding siblings ...)
2026-07-30 14:08 ` [PATCH 6.18 160/675] wifi: mwifiex: fix freeze for 60 seconds caused by request_firmware Greg Kroah-Hartman
@ 2026-07-30 14:08 ` Greg Kroah-Hartman
2026-07-30 14:08 ` [PATCH 6.18 162/675] Revert "drm/amd/display: Add missing kdoc for ALLM parameters" Greg Kroah-Hartman
` (518 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:08 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Xie Bo, Anup Patel, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Xie Bo <xb@ultrarisc.com>
commit d024a0a7879e6f37c0152aacf6d8e37b214a1738 upstream.
KVM RISC-V tracks guest local interrupt state with two bitmaps:
- irqs_pending: interrupts that should be visible to the guest
- irqs_pending_mask: interrupts whose pending state changed
The current code updates those bitmaps with independent atomic bitops
and assumes a multiple-producer, single-consumer protocol. That model
does not actually hold.
kvm_riscv_vcpu_sync_interrupts() is not a pure consumer. When the guest
changes guest-visible HVIP state, sync_interrupts() writes both
irqs_pending and irqs_pending_mask to reflect the new guest state back
into KVM state. As a result, irqs_pending and irqs_pending_mask form a
single logical state transition, but they are not updated atomically as
a pair.
This allows a race where a newly injected interrupt is lost. For
example:
CPU0 CPU1
---- ----
kvm_riscv_vcpu_set_interrupt(VS_SOFT)
set_bit(VS_SOFT, irqs_pending)
kvm_riscv_vcpu_sync_interrupts()
sees guest-cleared HVIP.VSSIP
sets irqs_pending_mask
clear_bit(IRQ_VS_SOFT, irqs_pending)
set_bit(VS_SOFT, irqs_pending_mask)
kvm_vcpu_kick()
After that interleaving, a later flush can update HVIP without VSSIP
even though a new virtual interrupt was injected. In practice, the
guest can remain blocked in WFI with work pending.
The same pending/mask protocol is shared by VS soft interrupts, PMU
overflow delivery, and AIA high interrupt synchronization, so the race
is not limited to one interrupt source.
Fix this by serializing all updates to irqs_pending and irqs_pending_mask
with a per-vCPU raw spinlock. This keeps the pending bit and the dirty
mask as one state transition across:
- set/unset interrupt
- guest HVIP sync
- interrupt flush to guest CSR state
- vCPU reset
- AIA CSR writes that clear dirty state
Use non-atomic bitmap operations while holding the lock. Hold the lock
across the AIA sync, flush, and pending checks as well, so both bitmap
words share the same serialization domain.
This intentionally replaces the existing lockless protocol instead of
trying to repair it with additional barriers. The problem is not memory
ordering on a single field; it is that two separate bitmaps encode one
shared state machine while both producers and sync paths can modify
them. A per-vCPU raw spinlock keeps the fix small, local, and suitable
for backporting.
Fixes: cce69aff689e ("RISC-V: KVM: Implement VCPU interrupts and requests handling")
Cc: stable@vger.kernel.org
Signed-off-by: Xie Bo <xb@ultrarisc.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Link: https://lore.kernel.org/r/20260715020359.1521354-2-xb@ultrarisc.com
Signed-off-by: Anup Patel <anup@brainfault.org>
[ bo: Adapt the AIA and general CSR helpers to their 6.18.y layout. ]
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
arch/riscv/include/asm/kvm_host.h | 10 ++---
arch/riscv/kvm/aia.c | 35 ++++++++++++----
arch/riscv/kvm/vcpu.c | 68 ++++++++++++++++++++++---------
arch/riscv/kvm/vcpu_onereg.c | 8 +++-
4 files changed, 87 insertions(+), 34 deletions(-)
diff --git a/arch/riscv/include/asm/kvm_host.h b/arch/riscv/include/asm/kvm_host.h
index 4d794573e3dbe8..fd3ba183cd8241 100644
--- a/arch/riscv/include/asm/kvm_host.h
+++ b/arch/riscv/include/asm/kvm_host.h
@@ -220,13 +220,13 @@ struct kvm_vcpu_arch {
/*
* VCPU interrupts
*
- * We have a lockless approach for tracking pending VCPU interrupts
- * implemented using atomic bitops. The irqs_pending bitmap represent
- * pending interrupts whereas irqs_pending_mask represent bits changed
- * in irqs_pending. Our approach is modeled around multiple producer
- * and single consumer problem where the consumer is the VCPU itself.
+ * The irqs_pending bitmap represents pending interrupts whereas
+ * irqs_pending_mask represents bits changed in irqs_pending. Updates
+ * to these bitmaps are serialized so vcpu interrupt sync/flush cannot
+ * drop a newly injected interrupt while syncing guest-visible HVIP.
*/
#define KVM_RISCV_VCPU_NR_IRQS 64
+ raw_spinlock_t irqs_pending_lock;
DECLARE_BITMAP(irqs_pending, KVM_RISCV_VCPU_NR_IRQS);
DECLARE_BITMAP(irqs_pending_mask, KVM_RISCV_VCPU_NR_IRQS);
diff --git a/arch/riscv/kvm/aia.c b/arch/riscv/kvm/aia.c
index dad3181856600f..b8b50608215564 100644
--- a/arch/riscv/kvm/aia.c
+++ b/arch/riscv/kvm/aia.c
@@ -50,12 +50,15 @@ void kvm_riscv_vcpu_aia_flush_interrupts(struct kvm_vcpu *vcpu)
struct kvm_vcpu_aia_csr *csr = &vcpu->arch.aia_context.guest_csr;
unsigned long mask, val;
+ lockdep_assert_held(&vcpu->arch.irqs_pending_lock);
+
if (!kvm_riscv_aia_available())
return;
- if (READ_ONCE(vcpu->arch.irqs_pending_mask[1])) {
- mask = xchg_acquire(&vcpu->arch.irqs_pending_mask[1], 0);
- val = READ_ONCE(vcpu->arch.irqs_pending[1]) & mask;
+ mask = vcpu->arch.irqs_pending_mask[1];
+ if (mask) {
+ vcpu->arch.irqs_pending_mask[1] = 0;
+ val = vcpu->arch.irqs_pending[1] & mask;
csr->hviph &= ~mask;
csr->hviph |= val;
@@ -66,6 +69,8 @@ void kvm_riscv_vcpu_aia_sync_interrupts(struct kvm_vcpu *vcpu)
{
struct kvm_vcpu_aia_csr *csr = &vcpu->arch.aia_context.guest_csr;
+ lockdep_assert_held(&vcpu->arch.irqs_pending_lock);
+
if (kvm_riscv_aia_available())
csr->vsieh = ncsr_read(CSR_VSIEH);
}
@@ -74,13 +79,22 @@ void kvm_riscv_vcpu_aia_sync_interrupts(struct kvm_vcpu *vcpu)
bool kvm_riscv_vcpu_aia_has_interrupts(struct kvm_vcpu *vcpu, u64 mask)
{
unsigned long seip;
+#ifdef CONFIG_32BIT
+ unsigned long flags;
+ bool pending;
+#endif
if (!kvm_riscv_aia_available())
return false;
#ifdef CONFIG_32BIT
- if (READ_ONCE(vcpu->arch.irqs_pending[1]) &
- (vcpu->arch.aia_context.guest_csr.vsieh & upper_32_bits(mask)))
+ raw_spin_lock_irqsave(&vcpu->arch.irqs_pending_lock, flags);
+ pending = vcpu->arch.irqs_pending[1] &
+ (vcpu->arch.aia_context.guest_csr.vsieh &
+ upper_32_bits(mask));
+ raw_spin_unlock_irqrestore(&vcpu->arch.irqs_pending_lock, flags);
+
+ if (pending)
return true;
#endif
@@ -198,6 +212,9 @@ int kvm_riscv_vcpu_aia_set_csr(struct kvm_vcpu *vcpu,
unsigned long val)
{
struct kvm_vcpu_aia_csr *csr = &vcpu->arch.aia_context.guest_csr;
+#ifdef CONFIG_32BIT
+ unsigned long flags;
+#endif
if (reg_num >= sizeof(struct kvm_riscv_aia_csr) / sizeof(unsigned long))
return -ENOENT;
@@ -206,8 +223,12 @@ int kvm_riscv_vcpu_aia_set_csr(struct kvm_vcpu *vcpu,
((unsigned long *)csr)[reg_num] = val;
#ifdef CONFIG_32BIT
- if (reg_num == KVM_REG_RISCV_CSR_AIA_REG(siph))
- WRITE_ONCE(vcpu->arch.irqs_pending_mask[1], 0);
+ if (reg_num == KVM_REG_RISCV_CSR_AIA_REG(siph)) {
+ raw_spin_lock_irqsave(&vcpu->arch.irqs_pending_lock, flags);
+ vcpu->arch.irqs_pending_mask[1] = 0;
+ raw_spin_unlock_irqrestore(&vcpu->arch.irqs_pending_lock,
+ flags);
+ }
#endif
}
diff --git a/arch/riscv/kvm/vcpu.c b/arch/riscv/kvm/vcpu.c
index d26c4967c20e24..6f8e9b105da7e4 100644
--- a/arch/riscv/kvm/vcpu.c
+++ b/arch/riscv/kvm/vcpu.c
@@ -78,6 +78,7 @@ static void kvm_riscv_vcpu_context_reset(struct kvm_vcpu *vcpu,
static void kvm_riscv_reset_vcpu(struct kvm_vcpu *vcpu, bool kvm_sbi_reset)
{
+ unsigned long flags;
bool loaded;
/**
@@ -102,8 +103,10 @@ static void kvm_riscv_reset_vcpu(struct kvm_vcpu *vcpu, bool kvm_sbi_reset)
kvm_riscv_vcpu_aia_reset(vcpu);
+ raw_spin_lock_irqsave(&vcpu->arch.irqs_pending_lock, flags);
bitmap_zero(vcpu->arch.irqs_pending, KVM_RISCV_VCPU_NR_IRQS);
bitmap_zero(vcpu->arch.irqs_pending_mask, KVM_RISCV_VCPU_NR_IRQS);
+ raw_spin_unlock_irqrestore(&vcpu->arch.irqs_pending_lock, flags);
kvm_riscv_vcpu_pmu_reset(vcpu);
@@ -147,6 +150,7 @@ int kvm_arch_vcpu_create(struct kvm_vcpu *vcpu)
/* Setup VCPU hfence queue */
spin_lock_init(&vcpu->arch.hfence_lock);
+ raw_spin_lock_init(&vcpu->arch.irqs_pending_lock);
spin_lock_init(&vcpu->arch.reset_state.lock);
@@ -348,10 +352,14 @@ void kvm_riscv_vcpu_flush_interrupts(struct kvm_vcpu *vcpu)
{
struct kvm_vcpu_csr *csr = &vcpu->arch.guest_csr;
unsigned long mask, val;
+ unsigned long flags;
- if (READ_ONCE(vcpu->arch.irqs_pending_mask[0])) {
- mask = xchg_acquire(&vcpu->arch.irqs_pending_mask[0], 0);
- val = READ_ONCE(vcpu->arch.irqs_pending[0]) & mask;
+ raw_spin_lock_irqsave(&vcpu->arch.irqs_pending_lock, flags);
+
+ mask = vcpu->arch.irqs_pending_mask[0];
+ if (mask) {
+ vcpu->arch.irqs_pending_mask[0] = 0;
+ val = vcpu->arch.irqs_pending[0] & mask;
csr->hvip &= ~mask;
csr->hvip |= val;
@@ -359,11 +367,14 @@ void kvm_riscv_vcpu_flush_interrupts(struct kvm_vcpu *vcpu)
/* Flush AIA high interrupts */
kvm_riscv_vcpu_aia_flush_interrupts(vcpu);
+
+ raw_spin_unlock_irqrestore(&vcpu->arch.irqs_pending_lock, flags);
}
void kvm_riscv_vcpu_sync_interrupts(struct kvm_vcpu *vcpu)
{
unsigned long hvip;
+ unsigned long flags;
struct kvm_vcpu_arch *v = &vcpu->arch;
struct kvm_vcpu_csr *csr = &vcpu->arch.guest_csr;
@@ -372,34 +383,41 @@ void kvm_riscv_vcpu_sync_interrupts(struct kvm_vcpu *vcpu)
/* Sync-up HVIP.VSSIP bit changes does by Guest */
hvip = ncsr_read(CSR_HVIP);
+
+ raw_spin_lock_irqsave(&v->irqs_pending_lock, flags);
+
if ((csr->hvip ^ hvip) & (1UL << IRQ_VS_SOFT)) {
if (hvip & (1UL << IRQ_VS_SOFT)) {
- if (!test_and_set_bit(IRQ_VS_SOFT,
- v->irqs_pending_mask))
- set_bit(IRQ_VS_SOFT, v->irqs_pending);
+ if (!__test_and_set_bit(IRQ_VS_SOFT,
+ v->irqs_pending_mask))
+ __set_bit(IRQ_VS_SOFT, v->irqs_pending);
} else {
- if (!test_and_set_bit(IRQ_VS_SOFT,
- v->irqs_pending_mask))
- clear_bit(IRQ_VS_SOFT, v->irqs_pending);
+ if (!__test_and_set_bit(IRQ_VS_SOFT,
+ v->irqs_pending_mask))
+ __clear_bit(IRQ_VS_SOFT, v->irqs_pending);
}
}
/* Sync up the HVIP.LCOFIP bit changes (only clear) by the guest */
if ((csr->hvip ^ hvip) & (1UL << IRQ_PMU_OVF)) {
if (!(hvip & (1UL << IRQ_PMU_OVF)) &&
- !test_and_set_bit(IRQ_PMU_OVF, v->irqs_pending_mask))
- clear_bit(IRQ_PMU_OVF, v->irqs_pending);
+ !__test_and_set_bit(IRQ_PMU_OVF, v->irqs_pending_mask))
+ __clear_bit(IRQ_PMU_OVF, v->irqs_pending);
}
/* Sync-up AIA high interrupts */
kvm_riscv_vcpu_aia_sync_interrupts(vcpu);
+ raw_spin_unlock_irqrestore(&v->irqs_pending_lock, flags);
+
/* Sync-up timer CSRs */
kvm_riscv_vcpu_timer_sync(vcpu);
}
int kvm_riscv_vcpu_set_interrupt(struct kvm_vcpu *vcpu, unsigned int irq)
{
+ unsigned long flags;
+
/*
* We only allow VS-mode software, timer, and external
* interrupts when irq is one of the local interrupts
@@ -412,9 +430,10 @@ int kvm_riscv_vcpu_set_interrupt(struct kvm_vcpu *vcpu, unsigned int irq)
irq != IRQ_PMU_OVF)
return -EINVAL;
- set_bit(irq, vcpu->arch.irqs_pending);
- smp_mb__before_atomic();
- set_bit(irq, vcpu->arch.irqs_pending_mask);
+ raw_spin_lock_irqsave(&vcpu->arch.irqs_pending_lock, flags);
+ __set_bit(irq, vcpu->arch.irqs_pending);
+ __set_bit(irq, vcpu->arch.irqs_pending_mask);
+ raw_spin_unlock_irqrestore(&vcpu->arch.irqs_pending_lock, flags);
kvm_vcpu_kick(vcpu);
@@ -423,6 +442,8 @@ int kvm_riscv_vcpu_set_interrupt(struct kvm_vcpu *vcpu, unsigned int irq)
int kvm_riscv_vcpu_unset_interrupt(struct kvm_vcpu *vcpu, unsigned int irq)
{
+ unsigned long flags;
+
/*
* We only allow VS-mode software, timer, counter overflow and external
* interrupts when irq is one of the local interrupts
@@ -435,26 +456,33 @@ int kvm_riscv_vcpu_unset_interrupt(struct kvm_vcpu *vcpu, unsigned int irq)
irq != IRQ_PMU_OVF)
return -EINVAL;
- clear_bit(irq, vcpu->arch.irqs_pending);
- smp_mb__before_atomic();
- set_bit(irq, vcpu->arch.irqs_pending_mask);
+ raw_spin_lock_irqsave(&vcpu->arch.irqs_pending_lock, flags);
+ __clear_bit(irq, vcpu->arch.irqs_pending);
+ __set_bit(irq, vcpu->arch.irqs_pending_mask);
+ raw_spin_unlock_irqrestore(&vcpu->arch.irqs_pending_lock, flags);
return 0;
}
bool kvm_riscv_vcpu_has_interrupts(struct kvm_vcpu *vcpu, u64 mask)
{
+ unsigned long flags;
unsigned long ie;
+ bool ret;
+ raw_spin_lock_irqsave(&vcpu->arch.irqs_pending_lock, flags);
ie = ((vcpu->arch.guest_csr.vsie & VSIP_VALID_MASK)
<< VSIP_TO_HVIP_SHIFT) & (unsigned long)mask;
ie |= vcpu->arch.guest_csr.vsie & ~IRQ_LOCAL_MASK &
(unsigned long)mask;
- if (READ_ONCE(vcpu->arch.irqs_pending[0]) & ie)
- return true;
+ ret = vcpu->arch.irqs_pending[0] & ie;
+ raw_spin_unlock_irqrestore(&vcpu->arch.irqs_pending_lock, flags);
/* Check AIA high interrupts */
- return kvm_riscv_vcpu_aia_has_interrupts(vcpu, mask);
+ if (!ret)
+ ret = kvm_riscv_vcpu_aia_has_interrupts(vcpu, mask);
+
+ return ret;
}
void __kvm_riscv_vcpu_power_off(struct kvm_vcpu *vcpu)
diff --git a/arch/riscv/kvm/vcpu_onereg.c b/arch/riscv/kvm/vcpu_onereg.c
index 865dae903aa0f6..3e8f9a28341215 100644
--- a/arch/riscv/kvm/vcpu_onereg.c
+++ b/arch/riscv/kvm/vcpu_onereg.c
@@ -522,6 +522,7 @@ static int kvm_riscv_vcpu_general_set_csr(struct kvm_vcpu *vcpu,
unsigned long reg_val)
{
struct kvm_vcpu_csr *csr = &vcpu->arch.guest_csr;
+ unsigned long flags;
if (reg_num >= sizeof(struct kvm_riscv_csr) / sizeof(unsigned long))
return -ENOENT;
@@ -533,8 +534,11 @@ static int kvm_riscv_vcpu_general_set_csr(struct kvm_vcpu *vcpu,
((unsigned long *)csr)[reg_num] = reg_val;
- if (reg_num == KVM_REG_RISCV_CSR_REG(sip))
- WRITE_ONCE(vcpu->arch.irqs_pending_mask[0], 0);
+ if (reg_num == KVM_REG_RISCV_CSR_REG(sip)) {
+ raw_spin_lock_irqsave(&vcpu->arch.irqs_pending_lock, flags);
+ vcpu->arch.irqs_pending_mask[0] = 0;
+ raw_spin_unlock_irqrestore(&vcpu->arch.irqs_pending_lock, flags);
+ }
return 0;
}
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 162/675] Revert "drm/amd/display: Add missing kdoc for ALLM parameters"
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (160 preceding siblings ...)
2026-07-30 14:08 ` [PATCH 6.18 161/675] RISC-V: KVM: Serialize virtual interrupt pending state updates Greg Kroah-Hartman
@ 2026-07-30 14:08 ` Greg Kroah-Hartman
2026-07-30 14:08 ` [PATCH 6.18 163/675] usb: xhci-pci: Limit VIA VL805 DMA addressing to 36 bits Greg Kroah-Hartman
` (517 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:08 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
This reverts commit 038a0f01dda595dceda8f0c9c5172b1297281929.
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/amd/display/modules/info_packet/info_packet.c | 2 --
1 file changed, 2 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/modules/info_packet/info_packet.c b/drivers/gpu/drm/amd/display/modules/info_packet/info_packet.c
index ae858a43c35f4a..b3d55cac35694b 100644
--- a/drivers/gpu/drm/amd/display/modules/info_packet/info_packet.c
+++ b/drivers/gpu/drm/amd/display/modules/info_packet/info_packet.c
@@ -447,8 +447,6 @@ void mod_build_vsc_infopacket(const struct dc_stream_state *stream,
*
* @stream: contains data we may need to construct VSIF (i.e. timing_3d_format, etc.)
* @info_packet: output structure where to store VSIF
- * @ALLMEnabled: indicates whether ALLM HF-VSIF should be generated
- * @ALLMValue: ALLM bit value to advertise in HF-VSIF
*/
void mod_build_hf_vsif_infopacket(const struct dc_stream_state *stream,
struct dc_info_packet *info_packet)
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 163/675] usb: xhci-pci: Limit VIA VL805 DMA addressing to 36 bits
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (161 preceding siblings ...)
2026-07-30 14:08 ` [PATCH 6.18 162/675] Revert "drm/amd/display: Add missing kdoc for ALLM parameters" Greg Kroah-Hartman
@ 2026-07-30 14:08 ` Greg Kroah-Hartman
2026-07-30 14:08 ` [PATCH 6.18 164/675] selftests/bpf: Adjust verifier_map_ptr for the maps excl field Greg Kroah-Hartman
` (516 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:08 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, stable, Xincheng Zhang, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Xincheng Zhang <zhangxincheng@ultrarisc.com>
commit 1fc50f1ecde39feb4fccdaf4bc71aa6c0eb25c49 upstream.
The VIA VL805/806 xHCI controller advertises AC64, but fails to handle
DMA addresses at or above 0x1000000000. On systems with large amounts of
RAM, this can cause USB device failures when the controller is given DMA
addresses beyond its usable address width.
Do not use XHCI_NO_64BIT_SUPPORT for this controller. That quirk clears
the cached AC64 capability and limits DMA to 32 bits, causing unnecessary
bouncing for addresses between 4GiB and 64GiB and hiding the controller's
real AC64 capability from code that may need to distinguish register
access width from usable DMA address width.
Track the usable DMA address width separately from the AC64 capability.
Initialize the generic xhci->dma_mask_bits field to 64 and let PCI quirks
reduce it for controllers with narrower DMA support. Set VIA VL805/806 to
36 bits so the DMA API only hands it addresses in the range it can handle
while keeping HCCPARAMS1.AC64 visible.
Cc: stable@kernel.org
Signed-off-by: Xincheng Zhang <zhangxincheng@ultrarisc.com>
Link: https://patch.msgid.link/20260630-xhci-via-dma-fix-v3-1-690dcb8cf75a@ultrarisc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/usb/host/xhci-pci.c | 1 +
drivers/usb/host/xhci.c | 15 ++++++++++-----
drivers/usb/host/xhci.h | 1 +
3 files changed, 12 insertions(+), 5 deletions(-)
diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
index f67a4d9562046f..734f7e74158354 100644
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -448,6 +448,7 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci)
if (pdev->vendor == PCI_VENDOR_ID_VIA && pdev->device == PCI_DEVICE_ID_VIA_VL805) {
xhci->quirks |= XHCI_LPM_SUPPORT;
xhci->quirks |= XHCI_TRB_OVERFETCH;
+ xhci->dma_mask_bits = 36;
}
if (pdev->vendor == PCI_VENDOR_ID_ASMEDIA &&
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index a06758addbf823..23b104c2956c7c 100644
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -5459,6 +5459,7 @@ int xhci_gen_setup(struct usb_hcd *hcd, xhci_get_quirks_t get_quirks)
if (xhci->hci_version > 0x100)
xhci->hcc_params2 = readl(&xhci->cap_regs->hcc_params2);
+ xhci->dma_mask_bits = 64;
/* xhci-plat or xhci-pci might have set max_interrupters already */
if ((!xhci->max_interrupters) ||
xhci->max_interrupters > HCS_MAX_INTRS(xhci->hcs_params1))
@@ -5505,12 +5506,16 @@ int xhci_gen_setup(struct usb_hcd *hcd, xhci_get_quirks_t get_quirks)
if (xhci->quirks & XHCI_NO_64BIT_SUPPORT)
xhci->hcc_params &= ~BIT(0);
- /* Set dma_mask and coherent_dma_mask to 64-bits,
- * if xHC supports 64-bit addressing */
+ /*
+ * Set dma_mask and coherent_dma_mask to 64-bits if xHC supports
+ * 64-bit addressing, unless a controller-specific quirk callback
+ * limits the usable address width.
+ */
if (HCC_64BIT_ADDR(xhci->hcc_params) &&
- !dma_set_mask(dev, DMA_BIT_MASK(64))) {
- xhci_dbg(xhci, "Enabling 64-bit DMA addresses.\n");
- dma_set_coherent_mask(dev, DMA_BIT_MASK(64));
+ !dma_set_mask(dev, DMA_BIT_MASK(xhci->dma_mask_bits))) {
+ xhci_dbg(xhci, "Enabling %u-bit DMA addresses.\n",
+ xhci->dma_mask_bits);
+ dma_set_coherent_mask(dev, DMA_BIT_MASK(xhci->dma_mask_bits));
} else {
/*
* This is to avoid error in cases where a 32-bit USB
diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h
index 58a51f09cceb8f..4cd4cb0e431d17 100644
--- a/drivers/usb/host/xhci.h
+++ b/drivers/usb/host/xhci.h
@@ -1524,6 +1524,7 @@ struct xhci_hcd {
/* imod_interval in ns (I * 250ns) */
u32 imod_interval;
u32 page_size;
+ unsigned int dma_mask_bits;
/* MSI-X/MSI vectors */
int nvecs;
/* optional clocks */
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 164/675] selftests/bpf: Adjust verifier_map_ptr for the maps excl field
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (162 preceding siblings ...)
2026-07-30 14:08 ` [PATCH 6.18 163/675] usb: xhci-pci: Limit VIA VL805 DMA addressing to 36 bits Greg Kroah-Hartman
@ 2026-07-30 14:08 ` Greg Kroah-Hartman
2026-07-30 14:08 ` [PATCH 6.18 165/675] selftests/bpf: Keep verifier_map_ptr exercising ops pointer access Greg Kroah-Hartman
` (515 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:08 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, KP Singh, Daniel Borkmann,
Alexei Starovoitov, Shung-Hsi Yu, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: KP Singh <kpsingh@kernel.org>
commit 38498c0ebacd54dbaac3513a548a13f1a8455c4e upstream.
Adding the u32 excl field at offset 32 of struct bpf_map right after the
sha[SHA256_DIGEST_SIZE] hash shifts the ops pointer from offset 32 to 40.
Therefore, fix up the test case.
# LDLIBS=-static PKG_CONFIG='pkg-config --static' ./vmtest.sh -- ./test_progs -t verifier_map_ptr
[...]
#637/1 verifier_map_ptr/bpf_map_ptr: read with negative offset rejected:OK
#637/2 verifier_map_ptr/bpf_map_ptr: read with negative offset rejected @unpriv:OK
#637/3 verifier_map_ptr/bpf_map_ptr: write rejected:OK
#637/4 verifier_map_ptr/bpf_map_ptr: write rejected @unpriv:OK
#637/5 verifier_map_ptr/bpf_map_ptr: read non-existent field rejected:OK
#637/6 verifier_map_ptr/bpf_map_ptr: read non-existent field rejected @unpriv:OK
#637/7 verifier_map_ptr/bpf_map_ptr: read ops field accepted:OK
#637/8 verifier_map_ptr/bpf_map_ptr: read ops field accepted @unpriv:OK
[...]
Summary: 2/18 PASSED, 0 SKIPPED, 0 FAILED
Signed-off-by: KP Singh <kpsingh@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/r/20260601150248.394863-7-daniel@iogearbox.net
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Shung-Hsi Yu <shung-hsi.yu@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
tools/testing/selftests/bpf/progs/verifier_map_ptr.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/tools/testing/selftests/bpf/progs/verifier_map_ptr.c b/tools/testing/selftests/bpf/progs/verifier_map_ptr.c
index e2767d27d8aaf8..d8e822d1a8bab6 100644
--- a/tools/testing/selftests/bpf/progs/verifier_map_ptr.c
+++ b/tools/testing/selftests/bpf/progs/verifier_map_ptr.c
@@ -70,13 +70,15 @@ __naked void bpf_map_ptr_write_rejected(void)
: __clobber_all);
}
-/* The first element of struct bpf_map is a SHA256 hash of 32 bytes, accessing
- * into this array is valid. The opts field is now at offset 33.
+/*
+ * struct bpf_map starts with the SHA256 hash sha[32] at offset 0 (a readable
+ * byte array), followed by the u32 excl field at offset 32. Reading a u32 at
+ * offset 33 runs past the end of excl and is rejected.
*/
SEC("socket")
__description("bpf_map_ptr: read non-existent field rejected")
__failure
-__msg("cannot access ptr member ops with moff 32 in struct bpf_map with off 33 size 4")
+__msg("access beyond the end of member excl (mend:36) in struct bpf_map with off 33 size 4")
__failure_unpriv
__msg_unpriv("access is allowed only to CAP_PERFMON and CAP_SYS_ADMIN")
__flag(BPF_F_ANY_ALIGNMENT)
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 165/675] selftests/bpf: Keep verifier_map_ptr exercising ops pointer access
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (163 preceding siblings ...)
2026-07-30 14:08 ` [PATCH 6.18 164/675] selftests/bpf: Adjust verifier_map_ptr for the maps excl field Greg Kroah-Hartman
@ 2026-07-30 14:08 ` Greg Kroah-Hartman
2026-07-30 14:08 ` [PATCH 6.18 166/675] wifi: ath9k: hif_usb: dont dereference hif_dev after re-arming firmware request Greg Kroah-Hartman
` (514 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:08 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Daniel Borkmann, Alexei Starovoitov,
Shung-Hsi Yu, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Daniel Borkmann <daniel@iogearbox.net>
commit 082c412097716b93ff1365689fc4ddcd1ce8296f upstream.
sashiko complained that 38498c0ebacd ("selftests/bpf: Adjust verifier_map_ptr
for the map's excl field") would slightly decrease the test coverage given
before the test was against the verifier rejecting the ops pointer. Recover
the old test with the right offsets and add the existing one as an additional
test case.
# LDLIBS=-static PKG_CONFIG='pkg-config --static' ./vmtest.sh -- ./test_progs -t verifier_map_ptr
[ 1.672932] bpf_testmod: module verification failed: signature and/or required key missing - tainting kernel
#637/1 verifier_map_ptr/bpf_map_ptr: read with negative offset rejected:OK
#637/2 verifier_map_ptr/bpf_map_ptr: read with negative offset rejected @unpriv:OK
#637/3 verifier_map_ptr/bpf_map_ptr: write rejected:OK
#637/4 verifier_map_ptr/bpf_map_ptr: write rejected @unpriv:OK
#637/5 verifier_map_ptr/bpf_map_ptr: read non-existent field rejected:OK
#637/6 verifier_map_ptr/bpf_map_ptr: read non-existent field rejected @unpriv:OK
#637/7 verifier_map_ptr/bpf_map_ptr: read beyond excl field rejected:OK
#637/8 verifier_map_ptr/bpf_map_ptr: read beyond excl field rejected @unpriv:OK
#637/9 verifier_map_ptr/bpf_map_ptr: read ops field accepted:OK
#637/10 verifier_map_ptr/bpf_map_ptr: read ops field accepted @unpriv:OK
#637/11 verifier_map_ptr/bpf_map_ptr: r = 0, map_ptr = map_ptr + r:OK
#637/12 verifier_map_ptr/bpf_map_ptr: r = 0, map_ptr = map_ptr + r @unpriv:OK
#637/13 verifier_map_ptr/bpf_map_ptr: r = 0, r = r + map_ptr:OK
#637/14 verifier_map_ptr/bpf_map_ptr: r = 0, r = r + map_ptr @unpriv:OK
#637 verifier_map_ptr:OK
[...]
Summary: 2/20 PASSED, 0 SKIPPED, 0 FAILED
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/r/20260602133052.423725-4-daniel@iogearbox.net
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Shung-Hsi Yu <shung-hsi.yu@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
.../selftests/bpf/progs/verifier_map_ptr.c | 34 ++++++++++++++++---
1 file changed, 30 insertions(+), 4 deletions(-)
diff --git a/tools/testing/selftests/bpf/progs/verifier_map_ptr.c b/tools/testing/selftests/bpf/progs/verifier_map_ptr.c
index d8e822d1a8bab6..1661936598703c 100644
--- a/tools/testing/selftests/bpf/progs/verifier_map_ptr.c
+++ b/tools/testing/selftests/bpf/progs/verifier_map_ptr.c
@@ -72,17 +72,43 @@ __naked void bpf_map_ptr_write_rejected(void)
/*
* struct bpf_map starts with the SHA256 hash sha[32] at offset 0 (a readable
- * byte array), followed by the u32 excl field at offset 32. Reading a u32 at
- * offset 33 runs past the end of excl and is rejected.
+ * byte array), the u32 excl field at offset 32, and the ops pointer at offset
+ * 40. Reading a u32 at offset 41 reaches into the middle of the ops pointer,
+ * i.e. a partial pointer access, which is rejected.
*/
SEC("socket")
__description("bpf_map_ptr: read non-existent field rejected")
__failure
-__msg("access beyond the end of member excl (mend:36) in struct bpf_map with off 33 size 4")
+__msg("cannot access ptr member ops with moff 40 in struct bpf_map with off 41 size 4")
__failure_unpriv
__msg_unpriv("access is allowed only to CAP_PERFMON and CAP_SYS_ADMIN")
__flag(BPF_F_ANY_ALIGNMENT)
__naked void read_non_existent_field_rejected(void)
+{
+ asm volatile (" \
+ r6 = 0; \
+ r1 = %[map_array_48b] ll; \
+ r6 = *(u32*)(r1 + 41); \
+ r0 = 1; \
+ exit; \
+" :
+ : __imm_addr(map_array_48b)
+ : __clobber_all);
+}
+
+/*
+ * The u32 excl field spans offsets 32..35 (mend 36). Reading a u32 at offset
+ * 33 starts inside excl but extends past its end, which the verifier rejects
+ * as an out-of-bounds scalar access.
+ */
+SEC("socket")
+__description("bpf_map_ptr: read beyond excl field rejected")
+__failure
+__msg("access beyond the end of member excl (mend:36) in struct bpf_map with off 33 size 4")
+__failure_unpriv
+__msg_unpriv("access is allowed only to CAP_PERFMON and CAP_SYS_ADMIN")
+__flag(BPF_F_ANY_ALIGNMENT)
+__naked void read_beyond_excl_field_rejected(void)
{
asm volatile (" \
r6 = 0; \
@@ -105,7 +131,7 @@ __naked void ptr_read_ops_field_accepted(void)
asm volatile (" \
r6 = 0; \
r1 = %[map_array_48b] ll; \
- r6 = *(u64*)(r1 + 0); \
+ r6 = *(u64*)(r1 + 40); \
r0 = 1; \
exit; \
" :
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 166/675] wifi: ath9k: hif_usb: dont dereference hif_dev after re-arming firmware request
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (164 preceding siblings ...)
2026-07-30 14:08 ` [PATCH 6.18 165/675] selftests/bpf: Keep verifier_map_ptr exercising ops pointer access Greg Kroah-Hartman
@ 2026-07-30 14:08 ` Greg Kroah-Hartman
2026-07-30 14:08 ` [PATCH 6.18 167/675] wifi: ath11k: fix NULL pointer dereference in ath11k_hal_srng_access_begin Greg Kroah-Hartman
` (513 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:08 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, syzbot+50122cbc2874b1eb25b0,
Cheng Yongkang, Toke Høiland-Jørgensen, Jeff Johnson,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Cheng Yongkang <teel4res@gmail.com>
[ Upstream commit dad9f96945d77ecd4708f730c06ef54dcd8cc057 ]
ath9k_hif_request_firmware() re-arms an asynchronous firmware load via
request_firmware_nowait(), passing hif_dev as the completion context, and
then still dereferences hif_dev:
dev_info(&hif_dev->udev->dev, "ath9k_htc: Firmware %s requested\n",
hif_dev->fw_name);
The re-armed callback ath9k_hif_usb_firmware_cb() runs on the "events"
workqueue and, when the firmware is missing, walks the retry chain into
ath9k_hif_usb_firmware_fail() -> complete_all(&hif_dev->fw_done). That
releases the wait_for_completion(&hif_dev->fw_done) in a concurrent
ath9k_hif_usb_disconnect(), which then kfree()s hif_dev. The trailing
dev_info() in the frame that re-armed the request can therefore read freed
memory (hif_dev->udev, the first field of struct hif_device_usb):
BUG: KASAN: slab-use-after-free in ath9k_hif_request_firmware
Read of size 8 ... by task kworker/...
ath9k_hif_request_firmware
ath9k_hif_usb_firmware_cb drivers/net/wireless/ath/ath9k/hif_usb.c:1247
request_firmware_work_func
Allocated by ...:
ath9k_hif_usb_probe drivers/net/wireless/ath/ath9k/hif_usb.c
Freed by ...:
ath9k_hif_usb_disconnect -> kfree drivers/net/wireless/ath/ath9k/hif_usb.c
The fw_done barrier only makes disconnect wait for the firmware chain to
*terminate*; it does not protect the outer ath9k_hif_request_firmware()
frame that re-armed the request and keeps touching hif_dev afterwards.
Drop the post-request dev_info(): it is the only use of hif_dev after the
async request is armed, and it is purely informational (the dev_err() on the
failure path runs only when request_firmware_nowait() did not arm a callback,
so hif_dev is still alive there).
This was first reported by syzbot as a single, non-reproduced crash that was
later auto-obsoleted, and was independently rediscovered by the reFuzz fuzzer,
which produced a C reproducer (USB-gadget connect/disconnect of an ath9k_htc
device whose firmware download fails). The vulnerable code is unchanged and
still present in v7.1-rc6, where the slab-use-after-free reproduces under KASAN
once the (sub-microsecond) race window is widened.
Fixes: e904cf6fe230 ("ath9k_htc: introduce support for different fw versions")
Reported-by: syzbot+50122cbc2874b1eb25b0@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=50122cbc2874b1eb25b0
Signed-off-by: Cheng Yongkang <teel4res@gmail.com>
Acked-by: Toke Høiland-Jørgensen <toke@toke.dk>
Link: https://patch.msgid.link/20260605153210.20471-1-1020691186@qq.com
Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/wireless/ath/ath9k/hif_usb.c | 7 +------
1 file changed, 1 insertion(+), 6 deletions(-)
diff --git a/drivers/net/wireless/ath/ath9k/hif_usb.c b/drivers/net/wireless/ath/ath9k/hif_usb.c
index fe9abe8cd268fa..0a3d2190b9beec 100644
--- a/drivers/net/wireless/ath/ath9k/hif_usb.c
+++ b/drivers/net/wireless/ath/ath9k/hif_usb.c
@@ -1225,15 +1225,10 @@ static int ath9k_hif_request_firmware(struct hif_device_usb *hif_dev,
ret = request_firmware_nowait(THIS_MODULE, true, hif_dev->fw_name,
&hif_dev->udev->dev, GFP_KERNEL,
hif_dev, ath9k_hif_usb_firmware_cb);
- if (ret) {
+ if (ret)
dev_err(&hif_dev->udev->dev,
"ath9k_htc: Async request for firmware %s failed\n",
hif_dev->fw_name);
- return ret;
- }
-
- dev_info(&hif_dev->udev->dev, "ath9k_htc: Firmware %s requested\n",
- hif_dev->fw_name);
return ret;
}
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 167/675] wifi: ath11k: fix NULL pointer dereference in ath11k_hal_srng_access_begin
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (165 preceding siblings ...)
2026-07-30 14:08 ` [PATCH 6.18 166/675] wifi: ath9k: hif_usb: dont dereference hif_dev after re-arming firmware request Greg Kroah-Hartman
@ 2026-07-30 14:08 ` Greg Kroah-Hartman
2026-07-30 14:08 ` [PATCH 6.18 168/675] hwmon: (corsair-psu) Stop device IO before calling hid_hw_stop Greg Kroah-Hartman
` (512 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:08 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Gaole Zhang, Baochen Qiang,
Rameshkumar Sundaram, Jeff Johnson, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Gaole Zhang <gaole.zhang@oss.qualcomm.com>
[ Upstream commit e8d85672dd7e2523f774caafba8f858384e18df7 ]
In ATH11K_QMI_EVENT_FW_READY, ATH11K_FLAG_REGISTERED is set
unconditionally even when ath11k_core_qmi_firmware_ready() fails.
This leaves the driver in an inconsistent state where
initialization is considered complete although the firmware ready
handling did not finish successfully. During the subsequent SSR,
the driver enters the restart path based on this incorrect state
and dereferences uninitialized srng members, resulting in a NULL
pointer dereference.
Call trace:
ath11k_hal_srng_access_begin+0xc/0x60 [ath11k] (P)
ath11k_ce_cleanup_pipes+0x17c/0x180 [ath11k]
ath11k_core_restart+0x40/0x168 [ath11k]
Fix this by:
- skipping firmware_ready if ATH11K_FLAG_REGISTERED is already set
- setting ATH11K_FLAG_REGISTERED only when firmware_ready succeeds
- setting ATH11K_FLAG_QMI_FAIL and aborting the FW_READY handling
on error
Tested-on: WCN6750 hw1.0 AHB WLAN.MSL.2.0.c2-00204-QCAMSLSWPLZ-1
Fixes: 6fe62a8cec51c ("wifi: ath11k: Add cold boot calibration support on WCN6750")
Signed-off-by: Gaole Zhang <gaole.zhang@oss.qualcomm.com>
Reviewed-by: Baochen Qiang <baochen.qiang@oss.qualcomm.com>
Reviewed-by: Rameshkumar Sundaram <rameshkumar.sundaram@oss.qualcomm.com>
Link: https://patch.msgid.link/20260609090609.4041009-1-gaole.zhang@oss.qualcomm.com
Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/wireless/ath/ath11k/qmi.c | 11 ++++++++---
1 file changed, 8 insertions(+), 3 deletions(-)
diff --git a/drivers/net/wireless/ath/ath11k/qmi.c b/drivers/net/wireless/ath/ath11k/qmi.c
index aea56c38bf8f38..f23d75c8ad6794 100644
--- a/drivers/net/wireless/ath/ath11k/qmi.c
+++ b/drivers/net/wireless/ath/ath11k/qmi.c
@@ -3295,9 +3295,14 @@ static void ath11k_qmi_driver_event_work(struct work_struct *work)
clear_bit(ATH11K_FLAG_CRASH_FLUSH,
&ab->dev_flags);
clear_bit(ATH11K_FLAG_RECOVERY, &ab->dev_flags);
- ath11k_core_qmi_firmware_ready(ab);
- set_bit(ATH11K_FLAG_REGISTERED, &ab->dev_flags);
-
+ if (!test_bit(ATH11K_FLAG_REGISTERED, &ab->dev_flags)) {
+ ret = ath11k_core_qmi_firmware_ready(ab);
+ if (ret) {
+ set_bit(ATH11K_FLAG_QMI_FAIL, &ab->dev_flags);
+ break;
+ }
+ set_bit(ATH11K_FLAG_REGISTERED, &ab->dev_flags);
+ }
break;
case ATH11K_QMI_EVENT_COLD_BOOT_CAL_DONE:
break;
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 168/675] hwmon: (corsair-psu) Stop device IO before calling hid_hw_stop
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (166 preceding siblings ...)
2026-07-30 14:08 ` [PATCH 6.18 167/675] wifi: ath11k: fix NULL pointer dereference in ath11k_hal_srng_access_begin Greg Kroah-Hartman
@ 2026-07-30 14:08 ` Greg Kroah-Hartman
2026-07-30 14:08 ` [PATCH 6.18 169/675] hwmon: (corsair-cpro) " Greg Kroah-Hartman
` (511 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:08 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, syzbot+9eebf5f6544c5e873858,
Edward Adam Davis, Guenter Roeck, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Edward Adam Davis <eadavis@qq.com>
[ Upstream commit 9ab8656548cd737b98d0b19c4253aff8d68e97f4 ]
hid_hw_stop() does not stop the device IO.
This results in a race condition between hid_input_report() and the point
immediately following the execution of hid_device_io_start() within
corsairpsu_probe(). If the probe operation fails after "io start" has
been initiated, this race condition will result in a uaf vulnerability
[1].
CPU0 CPU1
==== ====
corsairpsu_probe()
hid_device_io_start()
... unlock driver_input_lock
hid_hw_stop()
kfree(hidraw) __hid_input_report()
... acquire driver_input_lock
hid_report_raw_event()
hidraw_report_event()
... access hidraw's list_lock // trigger uaf
Consequently, when corsairpsu_probe() fails and hid_hw_stop() needs to
be executed, the io_started flag is first cleared while holding the
driver_input_lock to prevent potential race conditions involving input
reports.
[1]
BUG: KASAN: slab-use-after-free in rt_spin_lock+0x83/0x400 kernel/locking/spinlock_rt.c:56
Call Trace:
hidraw_report_event+0x5d/0x3a0 drivers/hid/hidraw.c:577
hid_report_raw_event+0x311/0x1730 drivers/hid/hid-core.c:2076
__hid_input_report drivers/hid/hid-core.c:2152 [inline]
hid_input_report+0x44e/0x580 drivers/hid/hid-core.c:2174
hid_irq_in+0x47e/0x6d0 drivers/hid/usbhid/hid-core.c:286
__usb_hcd_giveback_urb+0x3b3/0x5e0 drivers/usb/core/hcd.c:1657
dummy_timer+0x8a9/0x47d0 drivers/usb/gadget/udc/dummy_hcd.c:2005
Allocated by task 10:
hidraw_connect+0x57/0x430 drivers/hid/hidraw.c:606
hid_connect+0x5bf/0x19d0 drivers/hid/hid-core.c:2277
hid_hw_start+0xa8/0x120 drivers/hid/hid-core.c:2387
corsairpsu_probe+0xd9/0x3c0 drivers/hwmon/corsair-psu.c:782
Freed by task 10:
hidraw_disconnect+0x4f/0x60 drivers/hid/hidraw.c:662
hid_disconnect drivers/hid/hid-core.c:2362 [inline]
hid_hw_stop+0x101/0x1e0 drivers/hid/hid-core.c:2407
corsairpsu_probe+0x327/0x3c0 drivers/hwmon/corsair-psu.c:826
Fix the problem by calling hid_device_io_stop() before calling
hid_hw_stop().
Fixes: d115b51e0e56 ("hwmon: add Corsair PSU HID controller driver")
Reported-by: syzbot+9eebf5f6544c5e873858@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=9eebf5f6544c5e873858
Tested-by: syzbot+9eebf5f6544c5e873858@syzkaller.appspotmail.com
Signed-off-by: Edward Adam Davis <eadavis@qq.com>
Link: https://lore.kernel.org/r/tencent_BB7C33EB9EA41B7B4B5F1B8B25C0BA13BB08@qq.com
[groeck: Updated subject and description;
call hid_device_io_stop() only if IO has been started]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/hwmon/corsair-psu.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/hwmon/corsair-psu.c b/drivers/hwmon/corsair-psu.c
index ea28c9219507ad..4681af6843596b 100644
--- a/drivers/hwmon/corsair-psu.c
+++ b/drivers/hwmon/corsair-psu.c
@@ -831,6 +831,7 @@ static int corsairpsu_probe(struct hid_device *hdev, const struct hid_device_id
fail_and_close:
hid_hw_close(hdev);
+ hid_device_io_stop(hdev);
fail_and_stop:
hid_hw_stop(hdev);
return ret;
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 169/675] hwmon: (corsair-cpro) Stop device IO before calling hid_hw_stop
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (167 preceding siblings ...)
2026-07-30 14:08 ` [PATCH 6.18 168/675] hwmon: (corsair-psu) Stop device IO before calling hid_hw_stop Greg Kroah-Hartman
@ 2026-07-30 14:08 ` Greg Kroah-Hartman
2026-07-30 14:08 ` [PATCH 6.18 170/675] hwmon: (gigabyte_waterforce) " Greg Kroah-Hartman
` (510 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:08 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Sashiko, Guenter Roeck, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Guenter Roeck <linux@roeck-us.net>
[ Upstream commit 94c87871b051d7ad758828a805215a2ec194512a ]
Calling hid_hw_stop() does not stop the device IO.
This results in a race condition between hid_input_report() and the point
immediately following the execution of hid_device_io_start() within
the driver probe function. If the probe operation fails after "io start"
has been initiated, this race condition will result in a UAF vulnerability.
Fix the problem by calling hid_device_io_stop() before calling
hid_hw_stop().
Reported-by: Sashiko <sashiko-bot@kernel.org>
Fixes: 40c3a44542257 ("hwmon: add Corsair Commander Pro driver")
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/hwmon/corsair-cpro.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/hwmon/corsair-cpro.c b/drivers/hwmon/corsair-cpro.c
index b7b911f8359c7f..71e48b3bba60f0 100644
--- a/drivers/hwmon/corsair-cpro.c
+++ b/drivers/hwmon/corsair-cpro.c
@@ -645,6 +645,7 @@ static int ccp_probe(struct hid_device *hdev, const struct hid_device_id *id)
out_hw_close:
hid_hw_close(hdev);
+ hid_device_io_stop(hdev);
out_hw_stop:
hid_hw_stop(hdev);
return ret;
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 170/675] hwmon: (gigabyte_waterforce) Stop device IO before calling hid_hw_stop
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (168 preceding siblings ...)
2026-07-30 14:08 ` [PATCH 6.18 169/675] hwmon: (corsair-cpro) " Greg Kroah-Hartman
@ 2026-07-30 14:08 ` Greg Kroah-Hartman
2026-07-30 14:08 ` [PATCH 6.18 171/675] hwmon: (nzxt-smart2) " Greg Kroah-Hartman
` (509 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:08 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Sashiko, Guenter Roeck, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Guenter Roeck <linux@roeck-us.net>
[ Upstream commit ff0c5c53d08274e200b48a4d53aa078265e873cb ]
Calling hid_hw_stop() does not stop the device IO.
This results in a race condition between hid_input_report() and the point
immediately following the execution of hid_device_io_start() within
the driver probe function. If the probe operation fails after "io start"
has been initiated, this race condition will result in a UAF vulnerability.
Fix the problem by calling hid_device_io_stop() before calling
hid_hw_stop().
Reported-by: Sashiko <sashiko-bot@kernel.org>
Fixes: 42ac68e3d4ba0 ("hwmon: Add driver for Gigabyte AORUS Waterforce AIO coolers")
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/hwmon/gigabyte_waterforce.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/hwmon/gigabyte_waterforce.c b/drivers/hwmon/gigabyte_waterforce.c
index 27487e215bddff..4eea05f8b569c2 100644
--- a/drivers/hwmon/gigabyte_waterforce.c
+++ b/drivers/hwmon/gigabyte_waterforce.c
@@ -371,13 +371,15 @@ static int waterforce_probe(struct hid_device *hdev, const struct hid_device_id
if (IS_ERR(priv->hwmon_dev)) {
ret = PTR_ERR(priv->hwmon_dev);
hid_err(hdev, "hwmon registration failed with %d\n", ret);
- goto fail_and_close;
+ goto fail_and_io_stop;
}
waterforce_debugfs_init(priv);
return 0;
+fail_and_io_stop:
+ hid_device_io_stop(hdev);
fail_and_close:
hid_hw_close(hdev);
fail_and_stop:
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 171/675] hwmon: (nzxt-smart2) Stop device IO before calling hid_hw_stop
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (169 preceding siblings ...)
2026-07-30 14:08 ` [PATCH 6.18 170/675] hwmon: (gigabyte_waterforce) " Greg Kroah-Hartman
@ 2026-07-30 14:08 ` Greg Kroah-Hartman
2026-07-30 14:08 ` [PATCH 6.18 172/675] hwmon: (nzxt-kraken3) " Greg Kroah-Hartman
` (508 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:08 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Sashiko, Guenter Roeck, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Guenter Roeck <linux@roeck-us.net>
[ Upstream commit 59d104b54b0b42e30fd2a68d24ee5c49dcc54d1e ]
Calling hid_hw_stop() does not stop the device IO.
This results in a race condition between hid_input_report() and the point
immediately following the execution of hid_device_io_start() within
the driver probe function. If the probe operation fails after "io start"
has been initiated, this race condition will result in a UAF vulnerability.
Fix the problem by calling hid_device_io_stop() before calling
hid_hw_stop().
Reported-by: Sashiko <sashiko-bot@kernel.org>
Fixes: 53e68c20aeb1e ("hwmon: add driver for NZXT RGB&Fan Controller/Smart Device v2")
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/hwmon/nzxt-smart2.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/hwmon/nzxt-smart2.c b/drivers/hwmon/nzxt-smart2.c
index 58ef9fa0184be4..e2316c46629d61 100644
--- a/drivers/hwmon/nzxt-smart2.c
+++ b/drivers/hwmon/nzxt-smart2.c
@@ -768,7 +768,7 @@ static int nzxt_smart2_hid_probe(struct hid_device *hdev,
out_hw_close:
hid_hw_close(hdev);
-
+ hid_device_io_stop(hdev);
out_hw_stop:
hid_hw_stop(hdev);
return ret;
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 172/675] hwmon: (nzxt-kraken3) Stop device IO before calling hid_hw_stop
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (170 preceding siblings ...)
2026-07-30 14:08 ` [PATCH 6.18 171/675] hwmon: (nzxt-smart2) " Greg Kroah-Hartman
@ 2026-07-30 14:08 ` Greg Kroah-Hartman
2026-07-30 14:08 ` [PATCH 6.18 173/675] watchdog: pretimeout: Fix UAF in watchdog_unregister_governor() Greg Kroah-Hartman
` (507 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:08 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Sashiko, Guenter Roeck, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Guenter Roeck <linux@roeck-us.net>
[ Upstream commit f151d0143ac4e086f92f52328ebdbdc50933d8ef ]
Calling hid_hw_stop() does not stop the device IO.
This results in a race condition between hid_input_report() and the point
immediately following the execution of hid_device_io_start() within
the driver probe function. If the probe operation fails after "io start"
has been initiated, this race condition will result in a UAF vulnerability.
Fix the problem by calling hid_device_io_stop() before calling
hid_hw_stop().
Reported-by: Sashiko <sashiko-bot@kernel.org>
Fixes: f3b4b146eb107 ("hwmon: Add driver for NZXT Kraken X and Z series AIO CPU coolers")
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/hwmon/nzxt-kraken3.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/hwmon/nzxt-kraken3.c b/drivers/hwmon/nzxt-kraken3.c
index d00409bcab93ad..05525406c5fbb5 100644
--- a/drivers/hwmon/nzxt-kraken3.c
+++ b/drivers/hwmon/nzxt-kraken3.c
@@ -948,7 +948,7 @@ static int kraken3_probe(struct hid_device *hdev, const struct hid_device_id *id
ret = kraken3_init_device(hdev);
if (ret < 0) {
hid_err(hdev, "device init failed with %d\n", ret);
- goto fail_and_close;
+ goto fail_and_stop_io;
}
ret = kraken3_get_fw_ver(hdev);
@@ -960,13 +960,15 @@ static int kraken3_probe(struct hid_device *hdev, const struct hid_device_id *id
if (IS_ERR(priv->hwmon_dev)) {
ret = PTR_ERR(priv->hwmon_dev);
hid_err(hdev, "hwmon registration failed with %d\n", ret);
- goto fail_and_close;
+ goto fail_and_stop_io;
}
kraken3_debugfs_init(priv, device_name);
return 0;
+fail_and_stop_io:
+ hid_device_io_stop(hdev);
fail_and_close:
hid_hw_close(hdev);
fail_and_stop:
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 173/675] watchdog: pretimeout: Fix UAF in watchdog_unregister_governor()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (171 preceding siblings ...)
2026-07-30 14:08 ` [PATCH 6.18 172/675] hwmon: (nzxt-kraken3) " Greg Kroah-Hartman
@ 2026-07-30 14:08 ` Greg Kroah-Hartman
2026-07-30 14:08 ` [PATCH 6.18 174/675] watchdog: airoha: Prevent division by zero when clock frequency is zero Greg Kroah-Hartman
` (506 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:08 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Tzung-Bi Shih, Guenter Roeck,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Tzung-Bi Shih <tzungbi@kernel.org>
[ Upstream commit 7362ba0f9c96ac3ad6a2ca3995bd9fc9a28a8661 ]
When a watchdog governor is unregistered, it updates existing watchdog
devices that were using this governor by falling back to `default_gov`.
If the governor being unregistered is currently set as `default_gov`,
the `default_gov` is never cleared. This leads to 2 use-after-free
issues:
1. New watchdog devices registered after this point will inherit the
dangling `default_gov`.
2. Existing watchdog devices using the unregistered governor will have
their `wdd->gov` reassigned to the dangling `default_gov`.
Fix the UAF by clearing `default_gov` if it matches the governor being
unregistered.
Fixes: da0d12ff2b82 ("watchdog: pretimeout: add panic pretimeout governor")
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
Link: https://lore.kernel.org/r/20260707101803.3598173-1-tzungbi@kernel.org
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/watchdog/watchdog_pretimeout.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/watchdog/watchdog_pretimeout.c b/drivers/watchdog/watchdog_pretimeout.c
index 2526436dc74dd8..ea05f84f07e184 100644
--- a/drivers/watchdog/watchdog_pretimeout.c
+++ b/drivers/watchdog/watchdog_pretimeout.c
@@ -167,6 +167,8 @@ void watchdog_unregister_governor(struct watchdog_governor *gov)
}
spin_lock_irq(&pretimeout_lock);
+ if (default_gov == gov)
+ default_gov = NULL;
list_for_each_entry(p, &pretimeout_list, entry)
if (p->wdd->gov == gov)
p->wdd->gov = default_gov;
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 174/675] watchdog: airoha: Prevent division by zero when clock frequency is zero
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (172 preceding siblings ...)
2026-07-30 14:08 ` [PATCH 6.18 173/675] watchdog: pretimeout: Fix UAF in watchdog_unregister_governor() Greg Kroah-Hartman
@ 2026-07-30 14:08 ` Greg Kroah-Hartman
2026-07-30 14:08 ` [PATCH 6.18 175/675] wifi: ath11k: fix potential buffer underflow in ath11k_hal_rx_msdu_list_get() Greg Kroah-Hartman
` (505 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:08 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Wayen Yan, Guenter Roeck,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Wayen Yan <win847@gmail.com>
[ Upstream commit bcfcd7619f277842430d197556463b401b839ee9 ]
clk_get_rate() can return 0 when the clock provider is not properly
configured or the clock is unmanaged. The driver uses wdt_freq as a
divisor directly in airoha_wdt_probe() to compute max_timeout and in
airoha_wdt_get_timeleft() to compute the remaining time, which results
in a division by zero.
Add a check for wdt_freq == 0 in probe and return -EINVAL with
dev_err_probe() to prevent the division by zero and provide a
diagnostic message.
Fixes: 3cf67f3769b8 ("watchdog: Add support for Airoha EN7851 watchdog")
Signed-off-by: Wayen Yan <win847@gmail.com>
Link: https://lore.kernel.org/r/178347932594.81327.4834644880399144119@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/watchdog/airoha_wdt.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/watchdog/airoha_wdt.c b/drivers/watchdog/airoha_wdt.c
index dc8ca11c14d81a..4bd333189b87ec 100644
--- a/drivers/watchdog/airoha_wdt.c
+++ b/drivers/watchdog/airoha_wdt.c
@@ -147,6 +147,9 @@ static int airoha_wdt_probe(struct platform_device *pdev)
/* Watchdog ticks at half the bus rate */
airoha_wdt->wdt_freq = clk_get_rate(bus_clk) / 2;
+ if (!airoha_wdt->wdt_freq)
+ return dev_err_probe(dev, -EINVAL,
+ "invalid clock frequency\n");
/* Initialize struct watchdog device */
wdog_dev = &airoha_wdt->wdog_dev;
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 175/675] wifi: ath11k: fix potential buffer underflow in ath11k_hal_rx_msdu_list_get()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (173 preceding siblings ...)
2026-07-30 14:08 ` [PATCH 6.18 174/675] watchdog: airoha: Prevent division by zero when clock frequency is zero Greg Kroah-Hartman
@ 2026-07-30 14:08 ` Greg Kroah-Hartman
2026-07-30 14:08 ` [PATCH 6.18 176/675] wifi: ath11k: Flush the posted write after writing to PCIE_SOC_GLOBAL_RESET Greg Kroah-Hartman
` (504 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:08 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Dmitry Morgun, Rameshkumar Sundaram,
Baochen Qiang, Jeff Johnson, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Dmitry Morgun <d.morgun@ispras.ru>
[ Upstream commit 7f11e70629650ff6ea140984e5ce188b775b2683 ]
When the first entry in msdu_details has a zero buffer address,
the code accesses msdu_details[i - 1] with i == 0, causing a
buffer underflow.
Fix similarly to ath12k_wifi7_hal_rx_msdu_list_get() by adding
a separate check for i == 0 before the main condition to prevent
the out-of-bounds access.
Found by Linux Verification Center (linuxtesting.org) with SVACE.
Fixes: d5c65159f289 ("ath11k: driver for Qualcomm IEEE 802.11ax devices")
Signed-off-by: Dmitry Morgun <d.morgun@ispras.ru>
Reviewed-by: Rameshkumar Sundaram <rameshkumar.sundaram@oss.qualcomm.com>
Reviewed-by: Baochen Qiang <baochen.qiang@oss.qualcomm.com>
Link: https://patch.msgid.link/20260530114252.42615-1-d.morgun@ispras.ru
Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/wireless/ath/ath11k/dp_rx.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/net/wireless/ath/ath11k/dp_rx.c b/drivers/net/wireless/ath/ath11k/dp_rx.c
index 5666f66474455a..330446f279cd6d 100644
--- a/drivers/net/wireless/ath/ath11k/dp_rx.c
+++ b/drivers/net/wireless/ath/ath11k/dp_rx.c
@@ -4609,6 +4609,9 @@ static void ath11k_hal_rx_msdu_list_get(struct ath11k *ar,
msdu_details = &msdu_link->msdu_link[0];
for (i = 0; i < HAL_RX_NUM_MSDU_DESC; i++) {
+ if (!i && FIELD_GET(BUFFER_ADDR_INFO0_ADDR,
+ msdu_details[i].buf_addr_info.info0) == 0)
+ break;
if (FIELD_GET(BUFFER_ADDR_INFO0_ADDR,
msdu_details[i].buf_addr_info.info0) == 0) {
msdu_desc_info = &msdu_details[i - 1].rx_msdu_info;
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 176/675] wifi: ath11k: Flush the posted write after writing to PCIE_SOC_GLOBAL_RESET
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (174 preceding siblings ...)
2026-07-30 14:08 ` [PATCH 6.18 175/675] wifi: ath11k: fix potential buffer underflow in ath11k_hal_rx_msdu_list_get() Greg Kroah-Hartman
@ 2026-07-30 14:08 ` Greg Kroah-Hartman
2026-07-30 14:08 ` [PATCH 6.18 177/675] wifi: ath12k: " Greg Kroah-Hartman
` (503 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:08 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Alex Williamson,
Manivannan Sadhasivam, Baochen Qiang, Raj Kumar Bhagat,
Jeff Johnson, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Manivannan Sadhasivam <manivannan.sadhasivam@oss.qualcomm.com>
[ Upstream commit 0fe8010fc5b147607fc19ba010ba469afc95f35f ]
ath11k_pci_soc_global_reset() tries to reset the device by writing to the
PCIE_SOC_GLOBAL_RESET register. But it doesn't do a read-back to ensure
that the write gets flushed to the device before the delay.
This may lead to the delay on the host to be insufficient, if the posted
write doesn't reach the device before the delay.
So add a read-back after writing to the PCIE_SOC_GLOBAL_RESET register and
before the delay.
Compile tested only.
Fixes: f3c603d412b3 ("ath11k: reset MHI during power down and power up")
Reported-by: Alex Williamson <alex@shazbot.org>
Closes: https://lore.kernel.org/linux-pci/20260622160822.09350246@shazbot.org
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@oss.qualcomm.com>
Reviewed-by: Baochen Qiang <baochen.qiang@oss.qualcomm.com>
Reviewed-by: Raj Kumar Bhagat <raj.bhagat@oss.qualcomm.com>
Link: https://patch.msgid.link/20260623141649.41087-1-manivannan.sadhasivam@oss.qualcomm.com
Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/wireless/ath/ath11k/pci.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/net/wireless/ath/ath11k/pci.c b/drivers/net/wireless/ath/ath11k/pci.c
index 7114eca8810dbf..c7048219f3e08a 100644
--- a/drivers/net/wireless/ath/ath11k/pci.c
+++ b/drivers/net/wireless/ath/ath11k/pci.c
@@ -199,6 +199,8 @@ static void ath11k_pci_soc_global_reset(struct ath11k_base *ab)
val |= PCIE_SOC_GLOBAL_RESET_V;
ath11k_pcic_write32(ab, PCIE_SOC_GLOBAL_RESET, val);
+ /* Flush the posted write to the device */
+ ath11k_pcic_read32(ab, PCIE_SOC_GLOBAL_RESET);
/* TODO: exact time to sleep is uncertain */
delay = 10;
@@ -208,6 +210,8 @@ static void ath11k_pci_soc_global_reset(struct ath11k_base *ab)
val &= ~PCIE_SOC_GLOBAL_RESET_V;
ath11k_pcic_write32(ab, PCIE_SOC_GLOBAL_RESET, val);
+ /* Flush the posted write to the device */
+ ath11k_pcic_read32(ab, PCIE_SOC_GLOBAL_RESET);
mdelay(delay);
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 177/675] wifi: ath12k: Flush the posted write after writing to PCIE_SOC_GLOBAL_RESET
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (175 preceding siblings ...)
2026-07-30 14:08 ` [PATCH 6.18 176/675] wifi: ath11k: Flush the posted write after writing to PCIE_SOC_GLOBAL_RESET Greg Kroah-Hartman
@ 2026-07-30 14:08 ` Greg Kroah-Hartman
2026-07-30 14:08 ` [PATCH 6.18 178/675] firewire: net: Fix fragmented datagram reassembly Greg Kroah-Hartman
` (502 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:08 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Alex Williamson,
Manivannan Sadhasivam, Baochen Qiang, Raj Kumar Bhagat,
Jeff Johnson, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Manivannan Sadhasivam <manivannan.sadhasivam@oss.qualcomm.com>
[ Upstream commit 55f3aa06951cac78b0206bde961c8cf11929a27a ]
ath12k_pci_soc_global_reset() tries to reset the device by writing to the
PCIE_SOC_GLOBAL_RESET register. But it doesn't do a read-back to ensure
that the write gets flushed to the device before the delay.
This may lead to the delay on the host to be insufficient, if the posted
write doesn't reach the device before the delay.
So add a read-back after writing to the PCIE_SOC_GLOBAL_RESET register and
before the delay.
Compile tested only.
Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.6-01243-QCAHKSWPL_SILICONZ-1
Fixes: d889913205cf ("wifi: ath12k: driver for Qualcomm Wi-Fi 7 devices")
Reported-by: Alex Williamson <alex@shazbot.org>
Closes: https://lore.kernel.org/linux-pci/20260622160822.09350246@shazbot.org
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@oss.qualcomm.com>
Reviewed-by: Baochen Qiang <baochen.qiang@oss.qualcomm.com>
Reviewed-by: Raj Kumar Bhagat <raj.bhagat@oss.qualcomm.com>
Tested-by: Raj Kumar Bhagat <raj.bhagat@oss.qualcomm.com>
Link: https://patch.msgid.link/20260623141649.41087-2-manivannan.sadhasivam@oss.qualcomm.com
Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/wireless/ath/ath12k/pci.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/net/wireless/ath/ath12k/pci.c b/drivers/net/wireless/ath/ath12k/pci.c
index 60b8f7361b7f63..37f41635d3b00e 100644
--- a/drivers/net/wireless/ath/ath12k/pci.c
+++ b/drivers/net/wireless/ath/ath12k/pci.c
@@ -240,6 +240,8 @@ static void ath12k_pci_soc_global_reset(struct ath12k_base *ab)
val |= PCIE_SOC_GLOBAL_RESET_V;
ath12k_pci_write32(ab, PCIE_SOC_GLOBAL_RESET, val);
+ /* Flush the posted write to the device */
+ ath12k_pci_read32(ab, PCIE_SOC_GLOBAL_RESET);
/* TODO: exact time to sleep is uncertain */
delay = 10;
@@ -249,6 +251,8 @@ static void ath12k_pci_soc_global_reset(struct ath12k_base *ab)
val &= ~PCIE_SOC_GLOBAL_RESET_V;
ath12k_pci_write32(ab, PCIE_SOC_GLOBAL_RESET, val);
+ /* Flush the posted write to the device */
+ ath12k_pci_read32(ab, PCIE_SOC_GLOBAL_RESET);
mdelay(delay);
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 178/675] firewire: net: Fix fragmented datagram reassembly
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (176 preceding siblings ...)
2026-07-30 14:08 ` [PATCH 6.18 177/675] wifi: ath12k: " Greg Kroah-Hartman
@ 2026-07-30 14:08 ` Greg Kroah-Hartman
2026-07-30 14:08 ` [PATCH 6.18 179/675] wifi: ath6kl: fix OOB read from firmware num_msg in TX complete handler Greg Kroah-Hartman
` (501 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:08 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Ruoyu Wang, Takashi Sakamoto,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Ruoyu Wang <ruoyuw560@gmail.com>
[ Upstream commit d52a13adbb8ccbab99cd3bad36804e87d8b5c052 ]
fwnet_frag_new() keeps a sorted list of received fragments for a partial
datagram. When a new fragment is adjacent to an existing fragment, the
code checks whether the new fragment also closes the gap to the next or
previous list entry.
Those neighbor lookups currently assume that the current fragment always
has a real next or previous fragment. At a list edge, the next or
previous entry is the list head, not a struct fwnet_fragment_info.
The gap checks also compare against the old edge of the current fragment
instead of the edge after adding the new fragment. As a result, a
fragment that bridges two existing ranges may leave two adjacent ranges
unmerged, so fwnet_pd_is_complete() can miss a complete datagram.
Check for the list head before looking up the neighboring fragment, and
compare the neighbor against the new fragment's far edge when deciding
whether to merge all three ranges.
This issue was found by a static analysis checker and confirmed by
manual source review.
Fixes: c76acec6d551 ("firewire: add IPv4 support")
Signed-off-by: Ruoyu Wang <ruoyuw560@gmail.com>
Link: https://lore.kernel.org/r/20260707150454.2265951-1-ruoyuw560@gmail.com
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/firewire/net.c | 39 +++++++++++++++++++++------------------
1 file changed, 21 insertions(+), 18 deletions(-)
diff --git a/drivers/firewire/net.c b/drivers/firewire/net.c
index e8294540895507..354c81409946a9 100644
--- a/drivers/firewire/net.c
+++ b/drivers/firewire/net.c
@@ -298,31 +298,34 @@ static struct fwnet_fragment_info *fwnet_frag_new(
if (fi->offset + fi->len == offset) {
/* The new fragment can be tacked on to the end */
/* Did the new fragment plug a hole? */
- fi2 = list_entry(fi->fi_link.next,
- struct fwnet_fragment_info, fi_link);
- if (fi->offset + fi->len == fi2->offset) {
- /* glue fragments together */
- fi->len += len + fi2->len;
- list_del(&fi2->fi_link);
- kfree(fi2);
- } else {
- fi->len += len;
+ if (!list_is_last(&fi->fi_link, &pd->fi_list)) {
+ fi2 = list_next_entry(fi, fi_link);
+ if (offset + len == fi2->offset) {
+ /* glue fragments together */
+ fi->len += len + fi2->len;
+ list_del(&fi2->fi_link);
+ kfree(fi2);
+
+ return fi;
+ }
}
+ fi->len += len;
return fi;
}
if (offset + len == fi->offset) {
/* The new fragment can be tacked on to the beginning */
/* Did the new fragment plug a hole? */
- fi2 = list_entry(fi->fi_link.prev,
- struct fwnet_fragment_info, fi_link);
- if (fi2->offset + fi2->len == fi->offset) {
- /* glue fragments together */
- fi2->len += fi->len + len;
- list_del(&fi->fi_link);
- kfree(fi);
-
- return fi2;
+ if (!list_is_first(&fi->fi_link, &pd->fi_list)) {
+ fi2 = list_prev_entry(fi, fi_link);
+ if (fi2->offset + fi2->len == offset) {
+ /* glue fragments together */
+ fi2->len += fi->len + len;
+ list_del(&fi->fi_link);
+ kfree(fi);
+
+ return fi2;
+ }
}
fi->offset = offset;
fi->len += len;
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 179/675] wifi: ath6kl: fix OOB read from firmware num_msg in TX complete handler
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (177 preceding siblings ...)
2026-07-30 14:08 ` [PATCH 6.18 178/675] firewire: net: Fix fragmented datagram reassembly Greg Kroah-Hartman
@ 2026-07-30 14:08 ` Greg Kroah-Hartman
2026-07-30 14:08 ` [PATCH 6.18 180/675] wifi: ath6kl: fix OOB read from firmware IE lengths in connect event Greg Kroah-Hartman
` (500 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:08 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Tristan Madani, Jeff Johnson,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Tristan Madani <tristan@talencesecurity.com>
[ Upstream commit 3a21c89215cc18f1a97c5e5bfd1da6d4f3d44495 ]
The firmware-controlled num_msg field (u8, 0-255) drives the loop in
ath6kl_wmi_tx_complete_event_rx() without validation against the buffer
length. This allows out-of-bounds reads of up to 1020 bytes past the
WMI event buffer when the firmware sends an inflated num_msg.
Add a check that the buffer is large enough to hold the fixed struct
and the num_msg variable-length entries.
Fixes: bdcd81707973 ("Add ath6kl cleaned up driver")
Signed-off-by: Tristan Madani <tristan@talencesecurity.com>
Link: https://patch.msgid.link/20260625232907.3620746-1-tristmd@gmail.com
Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/wireless/ath/ath6kl/wmi.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/drivers/net/wireless/ath/ath6kl/wmi.c b/drivers/net/wireless/ath/ath6kl/wmi.c
index 08a154bce1396e..aab1ad80a8b6c2 100644
--- a/drivers/net/wireless/ath/ath6kl/wmi.c
+++ b/drivers/net/wireless/ath/ath6kl/wmi.c
@@ -484,6 +484,18 @@ static int ath6kl_wmi_tx_complete_event_rx(u8 *datap, int len)
evt = (struct wmi_tx_complete_event *) datap;
+ if (len < sizeof(*evt)) {
+ ath6kl_dbg(ATH6KL_DBG_WMI, "tx complete: invalid len %d\n",
+ len);
+ return -EINVAL;
+ }
+
+ if (len < sizeof(*evt) + evt->num_msg * sizeof(struct tx_complete_msg_v1)) {
+ ath6kl_dbg(ATH6KL_DBG_WMI, "tx complete: invalid len %d for %u msgs\n",
+ len, evt->num_msg);
+ return -EINVAL;
+ }
+
ath6kl_dbg(ATH6KL_DBG_WMI, "comp: %d %d %d\n",
evt->num_msg, evt->msg_len, evt->msg_type);
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 180/675] wifi: ath6kl: fix OOB read from firmware IE lengths in connect event
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (178 preceding siblings ...)
2026-07-30 14:08 ` [PATCH 6.18 179/675] wifi: ath6kl: fix OOB read from firmware num_msg in TX complete handler Greg Kroah-Hartman
@ 2026-07-30 14:08 ` Greg Kroah-Hartman
2026-07-30 14:08 ` [PATCH 6.18 181/675] wifi: carl9170: bound memcpy length in cmd callback to prevent OOB read Greg Kroah-Hartman
` (499 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:08 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Tristan Madani,
Vasanthakumar Thiagarajan, Jeff Johnson, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Tristan Madani <tristan@talencesecurity.com>
[ Upstream commit 6b47b29730de3232b919d8362749f6814c5f2a33 ]
The firmware-controlled beacon_ie_len, assoc_req_len, and assoc_resp_len
fields in ath6kl_wmi_connect_event_rx() are not validated against the
buffer length. Their sum (up to 765) can exceed the actual WMI event
data, causing out-of-bounds reads during IE parsing and state corruption
of wmi->is_wmm_enabled.
Add a check that the total IE length fits within the buffer.
Fixes: bdcd81707973 ("Add ath6kl cleaned up driver")
Signed-off-by: Tristan Madani <tristan@talencesecurity.com>
Reviewed-by: Vasanthakumar Thiagarajan <vasanthakumar.thiagarajan@oss.qualcomm.com>
Link: https://patch.msgid.link/20260421135009.348084-3-tristmd@gmail.com
Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/wireless/ath/ath6kl/wmi.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/net/wireless/ath/ath6kl/wmi.c b/drivers/net/wireless/ath/ath6kl/wmi.c
index aab1ad80a8b6c2..0cdcbc3c77966a 100644
--- a/drivers/net/wireless/ath/ath6kl/wmi.c
+++ b/drivers/net/wireless/ath/ath6kl/wmi.c
@@ -874,6 +874,14 @@ static int ath6kl_wmi_connect_event_rx(struct wmi *wmi, u8 *datap, int len,
ev = (struct wmi_connect_event *) datap;
+ if (len < sizeof(*ev) + ev->beacon_ie_len +
+ ev->assoc_req_len + ev->assoc_resp_len) {
+ ath6kl_dbg(ATH6KL_DBG_WMI,
+ "connect event: IE lengths %u+%u+%u exceed buffer %d\n",
+ ev->beacon_ie_len, ev->assoc_req_len,
+ ev->assoc_resp_len, len);
+ return -EINVAL;
+ }
if (vif->nw_type == AP_NETWORK) {
/* AP mode start/STA connected event */
struct net_device *dev = vif->ndev;
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 181/675] wifi: carl9170: bound memcpy length in cmd callback to prevent OOB read
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (179 preceding siblings ...)
2026-07-30 14:08 ` [PATCH 6.18 180/675] wifi: ath6kl: fix OOB read from firmware IE lengths in connect event Greg Kroah-Hartman
@ 2026-07-30 14:08 ` Greg Kroah-Hartman
2026-07-30 14:08 ` [PATCH 6.18 182/675] wifi: carl9170: fix OOB read from off-by-two in TX status handler Greg Kroah-Hartman
` (498 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:08 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Tristan Madani, Christian Lamparter,
Jeff Johnson, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Tristan Madani <tristan@talencesecurity.com>
[ Upstream commit 4cde55b2feff9504d1f993ab80e84e7ccb62791c ]
When the firmware sends a command response with a length mismatch,
carl9170_cmd_callback() logs the mismatch and calls carl9170_restart()
but then falls through to memcpy(ar->readbuf, buffer + 4, len - 4).
Since len comes from the firmware and can exceed ar->readlen, this
copies more data than the readbuf was allocated for.
Bound the memcpy to min(len - 4, ar->readlen) so that the response
is still completed -- avoiding repeated restarts from queued garbage --
while preventing an overread past the response buffer.
Fixes: a84fab3cbfdc ("carl9170: 802.11 rx/tx processing and usb backend")
Signed-off-by: Tristan Madani <tristan@talencesecurity.com>
Acked-by: Christian Lamparter <chunkeey@gmail.com>
Closes: https://syzkaller.appspot.com/bug?extid=5c1ca6ccaa1215781cac
Link: https://patch.msgid.link/20260421134929.325662-2-tristmd@gmail.com
Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/wireless/ath/carl9170/rx.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/net/wireless/ath/carl9170/rx.c b/drivers/net/wireless/ath/carl9170/rx.c
index 6833430130f4ca..f6855efc05c0f1 100644
--- a/drivers/net/wireless/ath/carl9170/rx.c
+++ b/drivers/net/wireless/ath/carl9170/rx.c
@@ -150,7 +150,8 @@ static void carl9170_cmd_callback(struct ar9170 *ar, u32 len, void *buffer)
spin_lock(&ar->cmd_lock);
if (ar->readbuf) {
if (len >= 4)
- memcpy(ar->readbuf, buffer + 4, len - 4);
+ memcpy(ar->readbuf, buffer + 4,
+ min_t(u32, len - 4, ar->readlen));
ar->readbuf = NULL;
}
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 182/675] wifi: carl9170: fix OOB read from off-by-two in TX status handler
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (180 preceding siblings ...)
2026-07-30 14:08 ` [PATCH 6.18 181/675] wifi: carl9170: bound memcpy length in cmd callback to prevent OOB read Greg Kroah-Hartman
@ 2026-07-30 14:08 ` Greg Kroah-Hartman
2026-07-30 14:08 ` [PATCH 6.18 183/675] wifi: carl9170: fix buffer overflow in rx_stream failover path Greg Kroah-Hartman
` (497 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:08 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Tristan Madani, Christian Lamparter,
Jeff Johnson, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Tristan Madani <tristan@talencesecurity.com>
[ Upstream commit a3f42f1049ad80c65560d2b078ad426c3134f78d ]
The bounds check in carl9170_tx_process_status() uses
`i > ((cmd->hdr.len / 2) + 1)` which is off by two, allowing
2 extra iterations past valid _tx_status entries when the firmware-
controlled hdr.ext exceeds hdr.len/2. Fix by using the correct
comparison `i >= (cmd->hdr.len / 2)`.
Fixes: a84fab3cbfdc ("carl9170: 802.11 rx/tx processing and usb backend")
Signed-off-by: Tristan Madani <tristan@talencesecurity.com>
Acked-by: Christian Lamparter <chunkeey@gmail.com>
Closes: https://syzkaller.appspot.com/bug?extid=5c1ca6ccaa1215781cac
Link: https://patch.msgid.link/20260421134929.325662-3-tristmd@gmail.com
Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/wireless/ath/carl9170/tx.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/wireless/ath/carl9170/tx.c b/drivers/net/wireless/ath/carl9170/tx.c
index b7717f9e1e9b92..b0eee8f892af70 100644
--- a/drivers/net/wireless/ath/carl9170/tx.c
+++ b/drivers/net/wireless/ath/carl9170/tx.c
@@ -692,7 +692,7 @@ void carl9170_tx_process_status(struct ar9170 *ar,
unsigned int i;
for (i = 0; i < cmd->hdr.ext; i++) {
- if (WARN_ON(i > ((cmd->hdr.len / 2) + 1))) {
+ if (WARN_ON(i >= (cmd->hdr.len / 2))) {
print_hex_dump_bytes("UU:", DUMP_PREFIX_NONE,
(void *) cmd, cmd->hdr.len + 4);
break;
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 183/675] wifi: carl9170: fix buffer overflow in rx_stream failover path
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (181 preceding siblings ...)
2026-07-30 14:08 ` [PATCH 6.18 182/675] wifi: carl9170: fix OOB read from off-by-two in TX status handler Greg Kroah-Hartman
@ 2026-07-30 14:08 ` Greg Kroah-Hartman
2026-07-30 14:08 ` [PATCH 6.18 184/675] btrfs: declare btrfs_ioctl_search_args_v2::buf as __u8 Greg Kroah-Hartman
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From: Greg Kroah-Hartman @ 2026-07-30 14:08 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Tristan Madani, Christian Lamparter,
Jeff Johnson, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Tristan Madani <tristan@talencesecurity.com>
[ Upstream commit a1a21995c2e1cc2ca6b2226cfe4f5f018370182a ]
The failover continuation in carl9170_rx_stream() copies the full tlen
from the second USB transfer instead of capping at rx_failover_missing
bytes. When both transfers are near maximum size, the total exceeds the
65535-byte failover SKB, triggering skb_over_panic.
Limit the copy size to the missing byte count.
Fixes: a84fab3cbfdc ("carl9170: 802.11 rx/tx processing and usb backend")
Signed-off-by: Tristan Madani <tristan@talencesecurity.com>
Acked-by: Christian Lamparter <chunkeey@gmail.com>
Closes: https://syzkaller.appspot.com/bug?extid=5c1ca6ccaa1215781cac
Link: https://patch.msgid.link/20260421134929.325662-4-tristmd@gmail.com
[Fix checkpatch CHECK:PARENTHESIS_ALIGNMENT]
Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/wireless/ath/carl9170/rx.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/net/wireless/ath/carl9170/rx.c b/drivers/net/wireless/ath/carl9170/rx.c
index f6855efc05c0f1..0383d5c9698bfa 100644
--- a/drivers/net/wireless/ath/carl9170/rx.c
+++ b/drivers/net/wireless/ath/carl9170/rx.c
@@ -918,7 +918,9 @@ static void carl9170_rx_stream(struct ar9170 *ar, void *buf, unsigned int len)
}
}
- skb_put_data(ar->rx_failover, tbuf, tlen);
+ skb_put_data(ar->rx_failover, tbuf,
+ min_t(unsigned int, tlen,
+ ar->rx_failover_missing));
ar->rx_failover_missing -= tlen;
if (ar->rx_failover_missing <= 0) {
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 184/675] btrfs: declare btrfs_ioctl_search_args_v2::buf as __u8
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
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2026-07-30 14:08 ` [PATCH 6.18 183/675] wifi: carl9170: fix buffer overflow in rx_stream failover path Greg Kroah-Hartman
@ 2026-07-30 14:08 ` Greg Kroah-Hartman
2026-07-30 14:08 ` [PATCH 6.18 185/675] btrfs: fix u32 to s64 type conversion in dirty_metadata_bytes accounting Greg Kroah-Hartman
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679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:08 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Qu Wenruo, You-Kai Zheng,
David Sterba, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: You-Kai Zheng <ykzheng@synology.com>
[ Upstream commit b95181f3929ff98949fa9460ca93eccebbf2d7fc ]
The variable-sized buffer buf in struct btrfs_ioctl_search_args_v2 is
declared as __u64[], but it holds a packed byte stream of search results,
where all offsets into the buffer are in bytes.
Declaring buf as __u64[] makes it easy for user space to write incorrect
pointer arithmetic: adding a byte offset directly to a __u64 pointer
scales the offset by 8, landing at byte position offset*8 instead of
offset.
This recently caused an infinite loop in btrfs-progs: the accessor read
all-zero data from misaddressed items, which fed zeroed search keys back
into the ioctl loop and spun forever. The issue was worked around at the
time by disabling TREE_SEARCH_V2 entirely in btrfs-progs (d73e69824854:
"btrfs-progs: temporarily disable usage of v2 of search tree ioctl").
The kernel side already treats buf as a byte buffer, so change the
declaration to __u8[] to match the actual semantics and prevent similar
misuse in user space. The change is ABI compatible: both the structure size
and alignment are unchanged.
Fixes: cc68a8a5a433 ("btrfs: new ioctl TREE_SEARCH_V2")
Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: You-Kai Zheng <ykzheng@synology.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
include/uapi/linux/btrfs.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/uapi/linux/btrfs.h b/include/uapi/linux/btrfs.h
index 8e710bbb688e04..fb89c5c37eb045 100644
--- a/include/uapi/linux/btrfs.h
+++ b/include/uapi/linux/btrfs.h
@@ -597,7 +597,7 @@ struct btrfs_ioctl_search_args_v2 {
__u64 buf_size; /* in - size of buffer
* out - on EOVERFLOW: needed size
* to store item */
- __u64 buf[]; /* out - found items */
+ __u8 buf[]; /* out - found items */
};
/* With a @src_length of zero, the range from @src_offset->EOF is cloned! */
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 185/675] btrfs: fix u32 to s64 type conversion in dirty_metadata_bytes accounting
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (183 preceding siblings ...)
2026-07-30 14:08 ` [PATCH 6.18 184/675] btrfs: declare btrfs_ioctl_search_args_v2::buf as __u8 Greg Kroah-Hartman
@ 2026-07-30 14:08 ` Greg Kroah-Hartman
2026-07-30 14:08 ` [PATCH 6.18 186/675] btrfs: dont propagate EXTENT_FLAG_LOGGING to split extent maps Greg Kroah-Hartman
` (494 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:08 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Filipe Manana, Dave Chen,
David Sterba, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Dave Chen <davechen@synology.com>
[ Upstream commit 8b5a09ceb61b18b1f0797cd30a549d7dc85d8d50 ]
The percpu_counter dirty_metadata_bytes is updated by negating eb->len
and passing it to percpu_counter_add_batch(), whose amount parameter is
s64. Since commit 84cda1a6087d ("btrfs: cache folio size and shift in
extent_buffer"), eb->len is u32. The u32 result of -eb->len, when
widened to the s64 parameter, becomes a large positive value instead of
the intended negative value. For eb->len == 16384 the counter adds
+4294950912 instead of subtracting 16384.
The counter therefore grows on every metadata writeback instead of
shrinking by the extent buffer size, permanently exceeding
BTRFS_DIRTY_METADATA_THRESH and causing __btrfs_btree_balance_dirty()
to trigger balance_dirty_pages_ratelimited() unconditionally, adding
unnecessary writeback pressure.
Cast eb->len to s64 before negation at both call sites so the
subtraction is performed in signed 64-bit arithmetic.
Reviewed-by: Filipe Manana <fdmanana@suse.com>
Fixes: 84cda1a6087d ("btrfs: cache folio size and shift in extent_buffer")
Signed-off-by: Dave Chen <davechen@synology.com>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
fs/btrfs/extent_io.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index f955b4003d4246..80fc2d59bfeb86 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -1949,7 +1949,7 @@ static noinline_for_stack bool lock_extent_buffer_for_io(struct extent_buffer *e
btrfs_set_header_flag(eb, BTRFS_HEADER_FLAG_WRITTEN);
percpu_counter_add_batch(&fs_info->dirty_metadata_bytes,
- -eb->len,
+ -(s64)eb->len,
fs_info->dirty_metadata_batch);
ret = true;
} else {
@@ -3731,7 +3731,7 @@ void btrfs_clear_buffer_dirty(struct btrfs_trans_handle *trans,
return;
buffer_tree_clear_mark(eb, PAGECACHE_TAG_DIRTY);
- percpu_counter_add_batch(&fs_info->dirty_metadata_bytes, -eb->len,
+ percpu_counter_add_batch(&fs_info->dirty_metadata_bytes, -(s64)eb->len,
fs_info->dirty_metadata_batch);
for (int i = 0; i < num_extent_folios(eb); i++) {
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 186/675] btrfs: dont propagate EXTENT_FLAG_LOGGING to split extent maps
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (184 preceding siblings ...)
2026-07-30 14:08 ` [PATCH 6.18 185/675] btrfs: fix u32 to s64 type conversion in dirty_metadata_bytes accounting Greg Kroah-Hartman
@ 2026-07-30 14:08 ` Greg Kroah-Hartman
2026-07-30 14:08 ` [PATCH 6.18 187/675] btrfs: free mapping node on duplicate reloc root insert Greg Kroah-Hartman
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679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:08 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Jeff Layton, Filipe Manana,
Leo Martins, David Sterba, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Leo Martins <loemra.dev@gmail.com>
[ Upstream commit 5eff4d5b17fa1950e80bfd1ba43dc0699e61a644 ]
When btrfs_drop_extent_map_range() splits an extent map, the new split
maps inherit the original map's flags through a local 'flags' variable.
Commit f86f7a75e2fb ("btrfs: use the flags of an extent map to identify
the compression type") changed the EXTENT_FLAG_LOGGING clearing to
operate on em->flags instead of that local 'flags' copy, so a split of
an extent map that is currently being logged wrongly inherits
EXTENT_FLAG_LOGGING.
The flag is then never cleared on the split, and when it is freed while
still on the inode's modified_extents list (for example by the extent
map shrinker) it trips the WARN_ON(!list_empty(&em->list)) in
btrfs_free_extent_map() and leads to a use-after-free.
Clear EXTENT_FLAG_LOGGING from the local 'flags' copy used for the
splits and only clear EXTENT_FLAG_PINNED from em->flags, restoring the
behaviour prior to f86f7a75e2fb.
CC: Jeff Layton <jlayton@kernel.org>
Link: https://lore.kernel.org/all/20260629-btrfs-skip-logging-v1-1-4e3a28c1acaf@kernel.org/
Fixes: f86f7a75e2fb ("btrfs: use the flags of an extent map to identify the compression type")
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: Leo Martins <loemra.dev@gmail.com>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
fs/btrfs/extent_map.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/fs/btrfs/extent_map.c b/fs/btrfs/extent_map.c
index 7e38c23a0c1cb6..21eb104ee2aefb 100644
--- a/fs/btrfs/extent_map.c
+++ b/fs/btrfs/extent_map.c
@@ -854,13 +854,13 @@ void btrfs_drop_extent_map_range(struct btrfs_inode *inode, u64 start, u64 end,
goto next;
}
- flags = em->flags;
/*
* In case we split the extent map, we want to preserve the
* EXTENT_FLAG_LOGGING flag on our extent map, but we don't want
* it on the new extent maps.
*/
- em->flags &= ~(EXTENT_FLAG_PINNED | EXTENT_FLAG_LOGGING);
+ flags = em->flags & ~EXTENT_FLAG_LOGGING;
+ em->flags &= ~EXTENT_FLAG_PINNED;
modified = !list_empty(&em->list);
/*
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 187/675] btrfs: free mapping node on duplicate reloc root insert
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (185 preceding siblings ...)
2026-07-30 14:08 ` [PATCH 6.18 186/675] btrfs: dont propagate EXTENT_FLAG_LOGGING to split extent maps Greg Kroah-Hartman
@ 2026-07-30 14:08 ` Greg Kroah-Hartman
2026-07-30 14:08 ` [PATCH 6.18 188/675] ASoC: tas2781: bound firmware description string parsing Greg Kroah-Hartman
` (492 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:08 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Qu Wenruo, Guanghui Yang,
David Sterba, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Guanghui Yang <3497809730@qq.com>
[ Upstream commit 6a8269b6459ed870a8156c106a0f597383907872 ]
__add_reloc_root() allocates a mapping_node before inserting it into
rc->reloc_root_tree. If rb_simple_insert() finds an existing entry, it
returns the existing rb_node and leaves the newly allocated node unlinked.
The error path then returns -EEXIST without freeing the new node. Since
the node was never inserted into reloc_root_tree, the later cleanup in
put_reloc_control() cannot find it either.
Free the newly allocated node before returning -EEXIST.
The callers currently assert that -EEXIST should not happen, so this is a
defensive cleanup for an unexpected duplicate insert path. If the path is
ever reached, the local allocation should still be released.
Fixes: 57a304cfd43b ("btrfs: do not panic in __add_reloc_root")
Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: Guanghui Yang <3497809730@qq.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
fs/btrfs/relocation.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
index 86430435d3acc7..80e5de6736e829 100644
--- a/fs/btrfs/relocation.c
+++ b/fs/btrfs/relocation.c
@@ -496,6 +496,7 @@ static int __add_reloc_root(struct btrfs_root *root)
btrfs_err(fs_info,
"Duplicate root found for start=%llu while inserting into relocation tree",
node->bytenr);
+ kfree(node);
return -EEXIST;
}
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 188/675] ASoC: tas2781: bound firmware description string parsing
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (186 preceding siblings ...)
2026-07-30 14:08 ` [PATCH 6.18 187/675] btrfs: free mapping node on duplicate reloc root insert Greg Kroah-Hartman
@ 2026-07-30 14:08 ` Greg Kroah-Hartman
2026-07-30 14:08 ` [PATCH 6.18 189/675] ASoC: sun4i-codec: Set quirks.playback_only for H616 codec Greg Kroah-Hartman
` (491 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:08 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Pengpeng Hou, Mark Brown,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Pengpeng Hou <pengpeng@iscas.ac.cn>
[ Upstream commit bc889dfcea9294a1eae7f8e2f3573a90764ae4d0 ]
The TAS2781 firmware parser reads several variable-length description
strings with strlen() before checking that the string terminator is
present inside the firmware blob. A malformed firmware image without a
NUL terminator can therefore make the parser walk past the end of the
firmware buffer before the later size checks run.
Add a small bounded string-length helper and use it for all description
fields that are parsed from the firmware buffer. Keep the existing size
checks for the fixed bytes that follow each string.
Fixes: 915f5eadebd2 ("ASoC: tas2781: firmware lib")
Signed-off-by: Pengpeng Hou <pengpeng@iscas.ac.cn>
Link: https://patch.msgid.link/20260706144540.93929-1-pengpeng@iscas.ac.cn
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
sound/soc/codecs/tas2781-fmwlib.c | 63 ++++++++++++++++++++++++++++---
1 file changed, 57 insertions(+), 6 deletions(-)
diff --git a/sound/soc/codecs/tas2781-fmwlib.c b/sound/soc/codecs/tas2781-fmwlib.c
index 78fd0a5dc6f22e..2f6522f76df9b3 100644
--- a/sound/soc/codecs/tas2781-fmwlib.c
+++ b/sound/soc/codecs/tas2781-fmwlib.c
@@ -12,6 +12,7 @@
#include <linux/i2c.h>
#include <linux/init.h>
#include <linux/interrupt.h>
+#include <linux/limits.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_irq.h>
@@ -1082,13 +1083,42 @@ static int tasdevice_load_block_kernel(
return 0;
}
+static int tasdevice_fw_strnlen(const struct firmware *fmw, int offset)
+{
+ const u8 *start;
+ const u8 *nul;
+ size_t remaining;
+ size_t len;
+
+ if (offset < 0 || offset >= fmw->size)
+ return -EINVAL;
+
+ start = fmw->data + offset;
+ remaining = fmw->size - offset;
+ nul = memchr(start, '\0', remaining);
+ if (!nul)
+ return -EINVAL;
+
+ len = nul - start;
+ if (len > INT_MAX)
+ return -EOVERFLOW;
+
+ return len;
+}
+
static int fw_parse_variable_hdr(struct tasdevice_priv
*tas_priv, struct tasdevice_dspfw_hdr *fw_hdr,
const struct firmware *fmw, int offset)
{
const unsigned char *buf = fmw->data;
- int len = strlen((char *)&buf[offset]);
+ int len;
+ len = tasdevice_fw_strnlen(fmw, offset);
+ if (len < 0) {
+ dev_err(tas_priv->dev, "%s: Description error\n", __func__);
+ offset = len;
+ goto out;
+ }
len++;
if (offset + len + 8 > fmw->size) {
@@ -1220,7 +1250,12 @@ static int fw_parse_data(struct tasdevice_fw *tas_fmw,
memcpy(img_data->name, &data[offset], 64);
offset += 64;
- n = strlen((char *)&data[offset]);
+ n = tasdevice_fw_strnlen(fmw, offset);
+ if (n < 0) {
+ dev_err(tas_fmw->dev, "%s: Description error\n", __func__);
+ offset = n;
+ goto out;
+ }
n++;
if (offset + n + 2 > fmw->size) {
dev_err(tas_fmw->dev, "%s: Description error\n", __func__);
@@ -1293,7 +1328,12 @@ static int fw_parse_program_data(struct tasdevice_priv *tas_priv,
}
offset += 64;
- n = strlen((char *)&buf[offset]);
+ n = tasdevice_fw_strnlen(fmw, offset);
+ if (n < 0) {
+ dev_err(tas_priv->dev, "Description err\n");
+ offset = n;
+ goto out;
+ }
/* skip '\0' and 5 unused bytes */
n += 6;
if (offset + n > fmw->size) {
@@ -1356,7 +1396,12 @@ static int fw_parse_configuration_data(
memcpy(config->name, &data[offset], 64);
offset += 64;
- n = strlen((char *)&data[offset]);
+ n = tasdevice_fw_strnlen(fmw, offset);
+ if (n < 0) {
+ dev_err(tas_priv->dev, "Description err\n");
+ offset = n;
+ goto out;
+ }
n += 15;
if (offset + n > fmw->size) {
dev_err(tas_priv->dev, "Description err\n");
@@ -2038,7 +2083,8 @@ static int fw_parse_calibration_data(struct tasdevice_priv *tas_priv,
{
struct tasdevice_calibration *calibration;
unsigned char *data = (unsigned char *)fmw->data;
- unsigned int i, n;
+ unsigned int i;
+ int n;
if (offset + 2 > fmw->size) {
dev_err(tas_priv->dev, "%s: Calibrations error\n", __func__);
@@ -2070,7 +2116,12 @@ static int fw_parse_calibration_data(struct tasdevice_priv *tas_priv,
calibration = &(tas_fmw->calibrations[i]);
offset += 64;
- n = strlen((char *)&data[offset]);
+ n = tasdevice_fw_strnlen(fmw, offset);
+ if (n < 0) {
+ dev_err(tas_priv->dev, "Description err\n");
+ offset = n;
+ goto out;
+ }
/* skip '\0' and 2 unused bytes */
n += 3;
if (offset + n > fmw->size) {
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 189/675] ASoC: sun4i-codec: Set quirks.playback_only for H616 codec
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (187 preceding siblings ...)
2026-07-30 14:08 ` [PATCH 6.18 188/675] ASoC: tas2781: bound firmware description string parsing Greg Kroah-Hartman
@ 2026-07-30 14:08 ` Greg Kroah-Hartman
2026-07-30 14:08 ` [PATCH 6.18 190/675] ALSA: hda: cs35l41: validate and free ACPI mute object Greg Kroah-Hartman
` (490 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:08 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Chen-Yu Tsai, Mark Brown,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Chen-Yu Tsai <wens@kernel.org>
[ Upstream commit d9e96f859de3ea3e99bce927a988449a1816483c ]
The H616 codec does not have capture capabilities. Set the
.playback_only quirks flag to denote this.
This was somehow missing from the original driver patch, even though
the patch prior to it in the series added this quirk.
Fixes: 9155c321a1d0 ("ASoC: sun4i-codec: support allwinner H616 codec")
Signed-off-by: Chen-Yu Tsai <wens@kernel.org>
Link: https://patch.msgid.link/20260714113304.270224-1-wens@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
sound/soc/sunxi/sun4i-codec.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/sound/soc/sunxi/sun4i-codec.c b/sound/soc/sunxi/sun4i-codec.c
index 93733ff2e32a03..3b92318e18ba6f 100644
--- a/sound/soc/sunxi/sun4i-codec.c
+++ b/sound/soc/sunxi/sun4i-codec.c
@@ -2236,6 +2236,7 @@ static const struct sun4i_codec_quirks sun50i_h616_codec_quirks = {
.reg_dac_fifoc = REG_FIELD(SUN50I_H616_CODEC_DAC_FIFOC, 0, 31),
.reg_dac_txdata = SUN8I_H3_CODEC_DAC_TXDATA,
.has_reset = true,
+ .playback_only = true,
.dma_max_burst = SUN4I_DMA_MAX_BURST,
};
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 190/675] ALSA: hda: cs35l41: validate and free ACPI mute object
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (188 preceding siblings ...)
2026-07-30 14:08 ` [PATCH 6.18 189/675] ASoC: sun4i-codec: Set quirks.playback_only for H616 codec Greg Kroah-Hartman
@ 2026-07-30 14:08 ` Greg Kroah-Hartman
2026-07-30 14:08 ` [PATCH 6.18 191/675] ASoC: bt-sco: fix duplicate DAPM widget names for wideband DAI Greg Kroah-Hartman
` (489 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:08 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Guangshuo Li, Takashi Iwai,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Guangshuo Li <lgs201920130244@gmail.com>
[ Upstream commit 3b597d24dc0455ae926f1053f97c2725038fc3cd ]
cs35l41_get_acpi_mute_state() evaluates a _DSM method to get the ACPI
mute state and reads the first byte from the returned object.
However, the returned ACPI object is owned by the caller and is never
freed after use, so each successful query leaks the _DSM result object.
The code also assumes that the returned object is a buffer with at least
one byte. A malformed firmware response can return a different object
type or an empty buffer, and the direct ret->buffer.pointer dereference
can then access an invalid pointer.
Use the typed _DSM helper, validate that the returned buffer contains at
least one byte, and free the ACPI object after reading it.
Fixes: 447106e92a0c ("ALSA: hda: cs35l41: Support mute notifications for CS35L41 HDA")
Signed-off-by: Guangshuo Li <lgs201920130244@gmail.com>
Link: https://patch.msgid.link/20260708113625.752913-1-lgs201920130244@gmail.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
sound/hda/codecs/side-codecs/cs35l41_hda.c | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)
diff --git a/sound/hda/codecs/side-codecs/cs35l41_hda.c b/sound/hda/codecs/side-codecs/cs35l41_hda.c
index 438a19bd979bfe..de2fd6471f0598 100644
--- a/sound/hda/codecs/side-codecs/cs35l41_hda.c
+++ b/sound/hda/codecs/side-codecs/cs35l41_hda.c
@@ -1437,10 +1437,19 @@ static int cs35l41_get_acpi_mute_state(struct cs35l41_hda *cs35l41, acpi_handle
guid_parse(CS35L41_UUID, &guid);
if (cs35l41_dsm_supported(handle, CS35L41_DSM_GET_MUTE)) {
- ret = acpi_evaluate_dsm(handle, &guid, 0, CS35L41_DSM_GET_MUTE, NULL);
+ ret = acpi_evaluate_dsm_typed(handle, &guid, 0,
+ CS35L41_DSM_GET_MUTE, NULL,
+ ACPI_TYPE_BUFFER);
+
if (!ret)
return -EINVAL;
+ if (!ret->buffer.length || !ret->buffer.pointer) {
+ ACPI_FREE(ret);
+ return -EINVAL;
+ }
+
mute = *ret->buffer.pointer;
+ ACPI_FREE(ret);
dev_dbg(cs35l41->dev, "CS35L41_DSM_GET_MUTE: %d\n", mute);
}
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 191/675] ASoC: bt-sco: fix duplicate DAPM widget names for wideband DAI
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (189 preceding siblings ...)
2026-07-30 14:08 ` [PATCH 6.18 190/675] ALSA: hda: cs35l41: validate and free ACPI mute object Greg Kroah-Hartman
@ 2026-07-30 14:08 ` Greg Kroah-Hartman
2026-07-30 14:08 ` [PATCH 6.18 192/675] ASoC: cs35l56: Dont use devres to unregister component Greg Kroah-Hartman
` (488 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:08 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Shengjiu Wang, Mark Brown,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Shengjiu Wang <shengjiu.wang@nxp.com>
[ Upstream commit 0b604e886ece11b71c4daaeccc512c784b89b014 ]
The bt-sco-pcm-wb DAI uses the same stream_name strings as bt-sco-pcm
("Playback" and "Capture"). This causes duplicate DAPM AIF widget
names within the same component, leading to debugfs warnings:
debugfs: 'Playback' already exists in 'dapm'
debugfs: 'Capture' already exists in 'dapm'
Give the wideband DAI distinct stream names ("WB Playback" and
"WB Capture") and add corresponding DAPM AIF widgets and routes for
them.
Fixes: 5947e1b4992e ("ASoC: bt-sco: extend rate and add a general compatible string")
Assisted-by: VeroCoder:claude-sonnet-4-5
Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Link: https://patch.msgid.link/20260715100620.1387159-1-shengjiu.wang@oss.nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
sound/soc/codecs/bt-sco.c | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/sound/soc/codecs/bt-sco.c b/sound/soc/codecs/bt-sco.c
index 3afcef2dfa3529..c0bf45b76cb8c5 100644
--- a/sound/soc/codecs/bt-sco.c
+++ b/sound/soc/codecs/bt-sco.c
@@ -17,11 +17,17 @@ static const struct snd_soc_dapm_widget bt_sco_widgets[] = {
SND_SOC_NOPM, 0, 0),
SND_SOC_DAPM_AIF_OUT("BT_SCO_TX", "Capture", 0,
SND_SOC_NOPM, 0, 0),
+ SND_SOC_DAPM_AIF_IN("BT_SCO_RX_WB", "WB Playback", 0,
+ SND_SOC_NOPM, 0, 0),
+ SND_SOC_DAPM_AIF_OUT("BT_SCO_TX_WB", "WB Capture", 0,
+ SND_SOC_NOPM, 0, 0),
};
static const struct snd_soc_dapm_route bt_sco_routes[] = {
{ "BT_SCO_TX", NULL, "RX" },
{ "TX", NULL, "BT_SCO_RX" },
+ { "BT_SCO_TX_WB", NULL, "RX" },
+ { "TX", NULL, "BT_SCO_RX_WB" },
};
static struct snd_soc_dai_driver bt_sco_dai[] = {
@@ -45,14 +51,14 @@ static struct snd_soc_dai_driver bt_sco_dai[] = {
{
.name = "bt-sco-pcm-wb",
.playback = {
- .stream_name = "Playback",
+ .stream_name = "WB Playback",
.channels_min = 1,
.channels_max = 1,
.rates = SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000,
.formats = SNDRV_PCM_FMTBIT_S16_LE,
},
.capture = {
- .stream_name = "Capture",
+ .stream_name = "WB Capture",
.channels_min = 1,
.channels_max = 1,
.rates = SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000,
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 192/675] ASoC: cs35l56: Dont use devres to unregister component
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (190 preceding siblings ...)
2026-07-30 14:08 ` [PATCH 6.18 191/675] ASoC: bt-sco: fix duplicate DAPM widget names for wideband DAI Greg Kroah-Hartman
@ 2026-07-30 14:08 ` Greg Kroah-Hartman
2026-07-30 14:08 ` [PATCH 6.18 193/675] ASoC: cs35l56: Fix potential probe() deadlock Greg Kroah-Hartman
` (487 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:08 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Richard Fitzgerald, Mark Brown,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Richard Fitzgerald <rf@opensource.cirrus.com>
[ Upstream commit bee87cf0f1248c0f20710d7a79df41fe892d9f88 ]
Manually call snd_soc_unregister_component() from cs35l56_remove()
instead of using devres cleanup. This ensures that the component is
destroyed before cs35l56_remove() starts cleanup of anything the
component code could be using.
Devres cleanup happens after the driver remove() callback, so if
snd_soc_register_component() is used, it will not be destroyed until
after cs35l56_remove() has returned. But there is some cleanup that
must be done in cs35l56_remove(), or wrapped in a custom devres
cleanup handler to ensure correct ordering. The simplest option is
to call snd_soc_unregister_component() at the start of cs35l56_remove().
Fixes: e49611252900 ("ASoC: cs35l56: Add driver for Cirrus Logic CS35L56")
Closes: https://sashiko.dev/#/patchset/20260501103002.2843735-1-rf%40opensource.cirrus.com
Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Link: https://patch.msgid.link/20260505161124.3621000-2-rf@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Stable-dep-of: 93c2a8ea2454 ("ASoC: cs35l56: Fix potential probe() deadlock")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
sound/soc/codecs/cs35l56.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/sound/soc/codecs/cs35l56.c b/sound/soc/codecs/cs35l56.c
index 7b57ef2336ea8d..0f40af6606a426 100644
--- a/sound/soc/codecs/cs35l56.c
+++ b/sound/soc/codecs/cs35l56.c
@@ -1437,9 +1437,9 @@ int cs35l56_common_probe(struct cs35l56_private *cs35l56)
goto err;
}
- ret = devm_snd_soc_register_component(cs35l56->base.dev,
- &soc_component_dev_cs35l56,
- cs35l56_dai, ARRAY_SIZE(cs35l56_dai));
+ ret = snd_soc_register_component(cs35l56->base.dev,
+ &soc_component_dev_cs35l56,
+ cs35l56_dai, ARRAY_SIZE(cs35l56_dai));
if (ret < 0) {
dev_err_probe(cs35l56->base.dev, ret, "Register codec failed\n");
goto err_remove_wm_adsp;
@@ -1541,6 +1541,8 @@ EXPORT_SYMBOL_NS_GPL(cs35l56_init, "SND_SOC_CS35L56_CORE");
void cs35l56_remove(struct cs35l56_private *cs35l56)
{
+ snd_soc_unregister_component(cs35l56->base.dev);
+
cs35l56->base.init_done = false;
/*
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 193/675] ASoC: cs35l56: Fix potential probe() deadlock
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (191 preceding siblings ...)
2026-07-30 14:08 ` [PATCH 6.18 192/675] ASoC: cs35l56: Dont use devres to unregister component Greg Kroah-Hartman
@ 2026-07-30 14:08 ` Greg Kroah-Hartman
2026-07-30 14:08 ` [PATCH 6.18 194/675] ASoC: cs35l56: Use complete_all() to signal init_completion Greg Kroah-Hartman
` (486 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:08 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Salman S. Tahir, Richard Fitzgerald,
Mark Brown, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Richard Fitzgerald <rf@opensource.cirrus.com>
[ Upstream commit 93c2a8ea2454b7b14eb378a58cad8a83c0ffc903 ]
On I2C/SPI call cs35l56_init() before calling
snd_soc_register_component() to prevent the potential for a deadlock
on init_completion.
For most buses all the hardware would be ready when probe() returns,
but on SoundWire, probe() must return before the SoundWire bus driver
will enumerate the device. All access to the registers must be deferred
until the driver receives an ATTACHED notification. But anything that
could return -EPROBE_DEFER must be called during probe, and that includes
snd_soc_register_component(). Because of that, on SoundWire the ASoC
component can be created before the registers are accssible, so
cs35l56_component_probe() waits for init_completion to signal that the
registers are accessible.
On I2C/SPI this 2-stage startup isn't required so their probe()
functions simply called cs35l56_common_probe() and then cs35l56_init().
The problem with this was that snd_soc_register_component() was still
called early. If this triggered ASoC to create the card, ASoC would call
cs35l56_component_probe() which waits on init_completion - but this would
be running inside the cs35l56 driver probe() so blocking it from reaching
the code that signals init_completion, causing a deadlock.
Fixes: e496112529006 ("ASoC: cs35l56: Add driver for Cirrus Logic CS35L56")
Reported-by: Salman S. Tahir <salman.abusaad@gmail.com>
Closes: https://lore.kernel.org/linux-sound/95c21574-97d5-4311-9263-9e174d22d22c@opensource.cirrus.com/T/#u
Tested-by: Salman S. Tahir <salman.abusaad@gmail.com>
Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Link: https://patch.msgid.link/20260716132045.1469156-2-rf@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
sound/soc/codecs/cs35l56-i2c.c | 4 +---
sound/soc/codecs/cs35l56-spi.c | 4 +---
sound/soc/codecs/cs35l56.c | 15 +++++++++++++++
3 files changed, 17 insertions(+), 6 deletions(-)
diff --git a/sound/soc/codecs/cs35l56-i2c.c b/sound/soc/codecs/cs35l56-i2c.c
index 0492ddc4102d80..8259714d8b2692 100644
--- a/sound/soc/codecs/cs35l56-i2c.c
+++ b/sound/soc/codecs/cs35l56-i2c.c
@@ -55,9 +55,7 @@ static int cs35l56_i2c_probe(struct i2c_client *client)
if (ret != 0)
return ret;
- ret = cs35l56_init(cs35l56);
- if (ret == 0)
- ret = cs35l56_irq_request(&cs35l56->base, client->irq);
+ ret = cs35l56_irq_request(&cs35l56->base, client->irq);
if (ret < 0)
cs35l56_remove(cs35l56);
diff --git a/sound/soc/codecs/cs35l56-spi.c b/sound/soc/codecs/cs35l56-spi.c
index 9bc9b7c98390dc..b1eb924a5b6ccf 100644
--- a/sound/soc/codecs/cs35l56-spi.c
+++ b/sound/soc/codecs/cs35l56-spi.c
@@ -44,9 +44,7 @@ static int cs35l56_spi_probe(struct spi_device *spi)
if (ret != 0)
return ret;
- ret = cs35l56_init(cs35l56);
- if (ret == 0)
- ret = cs35l56_irq_request(&cs35l56->base, spi->irq);
+ ret = cs35l56_irq_request(&cs35l56->base, spi->irq);
if (ret < 0)
cs35l56_remove(cs35l56);
diff --git a/sound/soc/codecs/cs35l56.c b/sound/soc/codecs/cs35l56.c
index 0f40af6606a426..f8468b3ae593a1 100644
--- a/sound/soc/codecs/cs35l56.c
+++ b/sound/soc/codecs/cs35l56.c
@@ -1437,6 +1437,16 @@ int cs35l56_common_probe(struct cs35l56_private *cs35l56)
goto err;
}
+ /*
+ * On SoundWire the cs35l56_init() cannot be run until after the
+ * device has been enumerated by the SoundWire core.
+ */
+ if (!cs35l56->sdw_peripheral) {
+ ret = cs35l56_init(cs35l56);
+ if (ret)
+ goto err_remove_wm_adsp;
+ }
+
ret = snd_soc_register_component(cs35l56->base.dev,
&soc_component_dev_cs35l56,
cs35l56_dai, ARRAY_SIZE(cs35l56_dai));
@@ -1451,6 +1461,11 @@ int cs35l56_common_probe(struct cs35l56_private *cs35l56)
wm_adsp2_remove(&cs35l56->dsp);
err:
+ if (pm_runtime_enabled(cs35l56->base.dev)) {
+ pm_runtime_dont_use_autosuspend(cs35l56->base.dev);
+ pm_runtime_disable(cs35l56->base.dev);
+ }
+
gpiod_set_value_cansleep(cs35l56->base.reset_gpio, 0);
regulator_bulk_disable(ARRAY_SIZE(cs35l56->supplies), cs35l56->supplies);
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 194/675] ASoC: cs35l56: Use complete_all() to signal init_completion
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (192 preceding siblings ...)
2026-07-30 14:08 ` [PATCH 6.18 193/675] ASoC: cs35l56: Fix potential probe() deadlock Greg Kroah-Hartman
@ 2026-07-30 14:08 ` Greg Kroah-Hartman
2026-07-30 14:08 ` [PATCH 6.18 195/675] wifi: iwlwifi: mvm: validate SAR GEO response payload size Greg Kroah-Hartman
` (485 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:08 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Richard Fitzgerald, Mark Brown,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Richard Fitzgerald <rf@opensource.cirrus.com>
[ Upstream commit e0bffb63a2eda0af82ed7e6357ac67c2db990c21 ]
In cs35l56_init() use complete_all() to signal init_completion instead
of complete().
cs35l56_init() was signaling init_completion using the complete() function.
This only releases ONE waiter.
If cs35l56_component_probe() was called multiple times the first time
would consume that one signal, then future calls would timeout waiting for
the completion. This could happen if:
- The component is probed, removed, then probed again without the cs35l56
module being removed.
- A call to component_probe() returns an error and ASoC calls it again
later.
It should use complete_all() so that after it has been signaled it will
allow any code that waits on it to continue immediately.
The one case where the driver must wait for initialization to run again is
when waiting for a reboot after firmware download, and here the code
correctly calls reinit_completion() first.
Fixes: e496112529006 ("ASoC: cs35l56: Add driver for Cirrus Logic CS35L56")
Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Link: https://patch.msgid.link/20260716132045.1469156-3-rf@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
sound/soc/codecs/cs35l56.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/sound/soc/codecs/cs35l56.c b/sound/soc/codecs/cs35l56.c
index f8468b3ae593a1..e3334b2d845323 100644
--- a/sound/soc/codecs/cs35l56.c
+++ b/sound/soc/codecs/cs35l56.c
@@ -1548,7 +1548,7 @@ int cs35l56_init(struct cs35l56_private *cs35l56)
return dev_err_probe(cs35l56->base.dev, ret, "Failed to write ASP1_CONTROL3\n");
cs35l56->base.init_done = true;
- complete(&cs35l56->init_completion);
+ complete_all(&cs35l56->init_completion);
return 0;
}
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 195/675] wifi: iwlwifi: mvm: validate SAR GEO response payload size
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (193 preceding siblings ...)
2026-07-30 14:08 ` [PATCH 6.18 194/675] ASoC: cs35l56: Use complete_all() to signal init_completion Greg Kroah-Hartman
@ 2026-07-30 14:08 ` Greg Kroah-Hartman
2026-07-30 14:08 ` [PATCH 6.18 196/675] wifi: iwlwifi: fix pointer arithmetic in iwl_add_mcc_to_tas_block_list Greg Kroah-Hartman
` (484 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:08 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Pagadala Yesu Anjaneyulu,
Miri Korenblit, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Pagadala Yesu Anjaneyulu <pagadala.yesu.anjaneyulu@intel.com>
[ Upstream commit 408d7da38272ce48e2db79b8a9895999f94d7655 ]
The SAR GEO command response is cast to
iwl_geo_tx_power_profiles_resp without verifying the payload length.
A malformed or unexpected firmware response can lead to reading an
invalid structure layout.
Add an explicit size check before accessing the response data and
return -EIO when the payload size is wrong.
Fixes: f604324eefec ("iwlwifi: remove iwl_validate_sar_geo_profile() export")
Signed-off-by: Pagadala Yesu Anjaneyulu <pagadala.yesu.anjaneyulu@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20260715215523.7e749b7d374a.I4ef54548bff6c6e7c7a57bee771ac12508aad677@changeid
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/wireless/intel/iwlwifi/mvm/fw.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/fw.c b/drivers/net/wireless/intel/iwlwifi/mvm/fw.c
index aa517978fc7a35..cfca5a3ee78ec8 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/fw.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/fw.c
@@ -955,12 +955,22 @@ int iwl_mvm_get_sar_geo_profile(struct iwl_mvm *mvm)
return ret;
}
+ if (IWL_FW_CHECK(mvm,
+ iwl_rx_packet_payload_len(cmd.resp_pkt) !=
+ sizeof(*resp),
+ "Wrong size for iwl_geo_tx_power_profiles_resp: %d\n",
+ iwl_rx_packet_payload_len(cmd.resp_pkt))) {
+ ret = -EIO;
+ goto out;
+ }
+
resp = (void *)cmd.resp_pkt->data;
ret = le32_to_cpu(resp->profile_idx);
if (WARN_ON(ret > BIOS_GEO_MAX_PROFILE_NUM))
ret = -EIO;
+out:
iwl_free_resp(&cmd);
return ret;
}
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 196/675] wifi: iwlwifi: fix pointer arithmetic in iwl_add_mcc_to_tas_block_list
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (194 preceding siblings ...)
2026-07-30 14:08 ` [PATCH 6.18 195/675] wifi: iwlwifi: mvm: validate SAR GEO response payload size Greg Kroah-Hartman
@ 2026-07-30 14:08 ` Greg Kroah-Hartman
2026-07-30 14:08 ` [PATCH 6.18 197/675] wifi: iwlwifi: validate payload length in iwl_pnvm_complete_fn Greg Kroah-Hartman
` (483 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:08 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Emmanuel Grumbach, Miri Korenblit,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
[ Upstream commit bc796f84ec9a95b356959ec7caf1d4fce33f3a76 ]
The expression list[*size++] increments the pointer 'size'
rather than the u8 value it points to (operator precedence: ++
binds to the pointer before the dereference). As a result the
block-list entry is written at the correct index but *size is
never incremented, so the caller's count stays at zero and
subsequent calls overwrite slot 0 every time.
Change to list[(*size)++] so that the value pointed to by size
is incremented after use as the array index.
Fixes: 5f4656610edb ("wifi: iwlwifi: extend TAS_CONFIG cmd support for v5")
Assisted-by: GitHubCopilot:gpt-5.3-codex
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20260715215523.d2cd92242582.Ife4140a4e27be2a1cd9f886c5a9b376ce182a019@changeid
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/wireless/intel/iwlwifi/fw/regulatory.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/wireless/intel/iwlwifi/fw/regulatory.c b/drivers/net/wireless/intel/iwlwifi/fw/regulatory.c
index e1f28b0532530a..818eb1c4b158f1 100644
--- a/drivers/net/wireless/intel/iwlwifi/fw/regulatory.c
+++ b/drivers/net/wireless/intel/iwlwifi/fw/regulatory.c
@@ -483,7 +483,7 @@ bool iwl_add_mcc_to_tas_block_list(u16 *list, u8 *size, u16 mcc)
if (*size >= IWL_WTAS_BLACK_LIST_MAX)
return false;
- list[*size++] = mcc;
+ list[(*size)++] = mcc;
return true;
}
IWL_EXPORT_SYMBOL(iwl_add_mcc_to_tas_block_list);
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 197/675] wifi: iwlwifi: validate payload length in iwl_pnvm_complete_fn
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (195 preceding siblings ...)
2026-07-30 14:08 ` [PATCH 6.18 196/675] wifi: iwlwifi: fix pointer arithmetic in iwl_add_mcc_to_tas_block_list Greg Kroah-Hartman
@ 2026-07-30 14:08 ` Greg Kroah-Hartman
2026-07-30 14:08 ` [PATCH 6.18 198/675] wifi: iwlwifi: mvm: fix read in wake packet notification handler Greg Kroah-Hartman
` (482 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:08 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Emmanuel Grumbach, Miri Korenblit,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
[ Upstream commit daec24a5ed5da77a108e246ad77aa8b889911f93 ]
iwl_pnvm_complete_fn() casts pkt->data directly to
struct iwl_pnvm_init_complete_ntfy and reads the status field
without first verifying that the firmware notification payload
is large enough to contain that structure.
Add a WARN_ON_ONCE check against sizeof(*pnvm_ntf) and return
early without reading uninitialised memory if the payload is too
short.
Fixes: b3e4c0f34c17 ("iwlwifi: move PNVM implementation to common code")
Assisted-by: GitHubCopilot:gpt-5.3-codex
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20260715215523.7f2a669e5c75.I00465dcfcbccb250ae9af2d9bb305e24de1ba394@changeid
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/wireless/intel/iwlwifi/fw/pnvm.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/drivers/net/wireless/intel/iwlwifi/fw/pnvm.c b/drivers/net/wireless/intel/iwlwifi/fw/pnvm.c
index f297e82d63d234..5de3a9c0b3ef09 100644
--- a/drivers/net/wireless/intel/iwlwifi/fw/pnvm.c
+++ b/drivers/net/wireless/intel/iwlwifi/fw/pnvm.c
@@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
/*
- * Copyright(c) 2020-2025 Intel Corporation
+ * Copyright(c) 2020-2026 Intel Corporation
*/
#include "iwl-drv.h"
@@ -12,6 +12,7 @@
#include "fw/api/alive.h"
#include "fw/uefi.h"
#include "fw/img.h"
+#include "fw/dbg.h"
#define IWL_PNVM_REDUCED_CAP_BIT BIT(25)
@@ -26,6 +27,12 @@ static bool iwl_pnvm_complete_fn(struct iwl_notif_wait_data *notif_wait,
struct iwl_trans *trans = (struct iwl_trans *)data;
struct iwl_pnvm_init_complete_ntfy *pnvm_ntf = (void *)pkt->data;
+ if (IWL_FW_CHECK(trans,
+ iwl_rx_packet_payload_len(pkt) < sizeof(*pnvm_ntf),
+ "Bad notif len: %d\n",
+ iwl_rx_packet_payload_len(pkt)))
+ return true;
+
IWL_DEBUG_FW(trans,
"PNVM complete notification received with status 0x%0x\n",
le32_to_cpu(pnvm_ntf->status));
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 198/675] wifi: iwlwifi: mvm: fix read in wake packet notification handler
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (196 preceding siblings ...)
2026-07-30 14:08 ` [PATCH 6.18 197/675] wifi: iwlwifi: validate payload length in iwl_pnvm_complete_fn Greg Kroah-Hartman
@ 2026-07-30 14:08 ` Greg Kroah-Hartman
2026-07-30 14:08 ` [PATCH 6.18 199/675] usb: atm: ueagle-atm: reject descriptors that confuse probe and disconnect Greg Kroah-Hartman
` (481 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:08 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Shahar Tzarfati, Miri Korenblit,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Shahar Tzarfati <shahar.tzarfati@intel.com>
[ Upstream commit 9d7657aae8c1579584c67b0b66114a6a98db8b2f ]
In iwl_mvm_wowlan_store_wake_pkt(), packet_len was initialized from
notif->wake_packet_length before the explicit check that len >=
sizeof(*notif).
Move the assignment of packet_len to after the size check so that
notif->wake_packet_length is only accessed once the payload length
has been validated.
Fixes: 219ed58feda9 ("wifi: iwlwifi: mvm: Add support for wowlan wake packet notification")
Signed-off-by: Shahar Tzarfati <shahar.tzarfati@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20260715215523.99d5cf85a528.Ic4aa736011d4fe88e0cd19723d1d48bb24642198@changeid
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/wireless/intel/iwlwifi/mvm/d3.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/d3.c b/drivers/net/wireless/intel/iwlwifi/mvm/d3.c
index 11afe373961f3d..46e95e25dcd44e 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/d3.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/d3.c
@@ -2783,7 +2783,7 @@ static int iwl_mvm_wowlan_store_wake_pkt(struct iwl_mvm *mvm,
struct iwl_wowlan_status_data *status,
u32 len)
{
- u32 data_size, packet_len = le32_to_cpu(notif->wake_packet_length);
+ u32 data_size, packet_len;
if (len < sizeof(*notif)) {
IWL_ERR(mvm, "Invalid WoWLAN wake packet notification!\n");
@@ -2802,6 +2802,7 @@ static int iwl_mvm_wowlan_store_wake_pkt(struct iwl_mvm *mvm,
return -EIO;
}
+ packet_len = le32_to_cpu(notif->wake_packet_length);
data_size = len - offsetof(struct iwl_wowlan_wake_pkt_notif, wake_packet);
/* data_size got the padding from the notification, remove it. */
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 199/675] usb: atm: ueagle-atm: reject descriptors that confuse probe and disconnect
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (197 preceding siblings ...)
2026-07-30 14:08 ` [PATCH 6.18 198/675] wifi: iwlwifi: mvm: fix read in wake packet notification handler Greg Kroah-Hartman
@ 2026-07-30 14:08 ` Greg Kroah-Hartman
2026-07-30 14:08 ` [PATCH 6.18 200/675] drivers/virt: pkvm: Fix end calculation in mmio_guard_ioremap_hook() Greg Kroah-Hartman
` (480 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:08 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, syzbot+e62a973f8322b3bbe3ac,
Diego Fernando Mancera Gomez, Stanislaw Gruszka, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Diego Fernando Mancera Gomez <diegomancera.dev@gmail.com>
[ Upstream commit 71132cedd1ecbc4032d76e9928c18a10f7e39b80 ]
uea_probe() distinguishes a pre-firmware device from a post-firmware one
using the USB id (UEA_IS_PREFIRM()), and stores a different object as the
interface data in each case: a 'struct completion' for a pre-firmware
device (to be waited on in .disconnect()), or a 'struct usbatm_data' for a
post-firmware one.
uea_disconnect() instead tells the two apart by the number of interfaces
of the active configuration (a pre-firmware device exposes a single
interface, ADI930 has 2 and eagle has 3), and casts the interface data
accordingly.
Because the two handlers use different criteria, a crafted device that
advertises a pre-firmware id together with a multi-interface descriptor
(or a post-firmware id with a single interface) makes them disagree: the
small 'struct completion' stored by uea_probe() is then passed to
usbatm_usb_disconnect(), which casts it to 'struct usbatm_data' and takes
instance->serialize, reading past the end of the allocation:
BUG: KASAN: slab-out-of-bounds in __mutex_lock+0x152a/0x1b80
Read of size 8 at addr ffff8880470e2c60 by task kworker/1:2/982
...
__mutex_lock+0x152a/0x1b80
usbatm_usb_disconnect+0x70/0x820
uea_disconnect+0x133/0x2c0
usb_unbind_interface+0x1dd/0x9e0
...
which belongs to the cache kmalloc-96 of size 96
The buggy address is located 0 bytes to the right of
allocated 96-byte region [ffff8880470e2c00, ffff8880470e2c60)
Reject such inconsistent descriptors in uea_probe() so that both handlers
always make the same pre/post-firmware decision.
Reported-by: syzbot+e62a973f8322b3bbe3ac@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=e62a973f8322b3bbe3ac
Fixes: e2674dfbed8a ("usb: atm: ueagle-atm: wait for pre-firmware load in .disconnect()")
Signed-off-by: Diego Fernando Mancera Gomez <diegomancera.dev@gmail.com>
Acked-by: Stanislaw Gruszka <stf_xl@wp.pl>
Link: https://patch.msgid.link/20260717080704.1264-1-diegomancera.dev@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/usb/atm/ueagle-atm.c | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/drivers/usb/atm/ueagle-atm.c b/drivers/usb/atm/ueagle-atm.c
index a943a5257a59fb..f1f1fc16a4711f 100644
--- a/drivers/usb/atm/ueagle-atm.c
+++ b/drivers/usb/atm/ueagle-atm.c
@@ -2550,6 +2550,7 @@ static struct usbatm_driver uea_usbatm_driver = {
static int uea_probe(struct usb_interface *intf, const struct usb_device_id *id)
{
struct usb_device *usb = interface_to_usbdev(intf);
+ bool single_iface = usb->config->desc.bNumInterfaces == 1;
int ret;
uea_dbg(usb, "ADSL device found with vid (%#X) pid (%#X) Rev (%#X): %s\n",
@@ -2558,6 +2559,22 @@ static int uea_probe(struct usb_interface *intf, const struct usb_device_id *id)
le16_to_cpu(usb->descriptor.bcdDevice),
chip_name[UEA_CHIP_VERSION(id)]);
+ /*
+ * uea_probe() decides between the pre-firmware and post-firmware case
+ * from the USB id and stores a different object as interface data in
+ * each case: a struct completion for a pre-firmware device, a struct
+ * usbatm_data for a post-firmware one. uea_disconnect() instead tells
+ * the two apart by the number of interfaces (a pre-firmware device
+ * exposes a single interface, ADI930 has 2 and eagle has 3). A crafted
+ * device advertising a pre-firmware id together with a multi-interface
+ * descriptor (or the other way around) makes the two disagree, so that
+ * usbatm_usb_disconnect() treats the small completion object as a
+ * struct usbatm_data and reads out of bounds. Reject such inconsistent
+ * descriptors so both paths make the same decision.
+ */
+ if (UEA_IS_PREFIRM(id) != single_iface)
+ return -ENODEV;
+
usb_reset_device(usb);
if (UEA_IS_PREFIRM(id)) {
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 200/675] drivers/virt: pkvm: Fix end calculation in mmio_guard_ioremap_hook()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (198 preceding siblings ...)
2026-07-30 14:08 ` [PATCH 6.18 199/675] usb: atm: ueagle-atm: reject descriptors that confuse probe and disconnect Greg Kroah-Hartman
@ 2026-07-30 14:08 ` Greg Kroah-Hartman
2026-07-30 14:08 ` [PATCH 6.18 201/675] hwmon: (asus-ec-sensors) fix looping over banks while reading from EC Greg Kroah-Hartman
` (479 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:08 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Mostafa Saleh, Catalin Marinas,
Aneesh Kumar K.V (Arm), Will Deacon, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Mostafa Saleh <smostafa@google.com>
[ Upstream commit 62c740f823a8e47ffe56e45a7472c27cf988e2f6 ]
Sashiko (locally) reports a logical issues in mmio_guard_ioremap_hook()
mmio_guard_ioremap_hook() attempts to handle unaligned addresses and
sizes. However, aligning the start address before adding the size, might
shift the end to the page before.
Fixes: 0f1269495800 ("drivers/virt: pkvm: Intercept ioremap using pKVM MMIO_GUARD hypercall")
Signed-off-by: Mostafa Saleh <smostafa@google.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Tested-by: Aneesh Kumar K.V (Arm) <aneesh.kumar@kernel.org>
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/virt/coco/pkvm-guest/arm-pkvm-guest.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/virt/coco/pkvm-guest/arm-pkvm-guest.c b/drivers/virt/coco/pkvm-guest/arm-pkvm-guest.c
index 4230b817a80bd8..d66291def0f408 100644
--- a/drivers/virt/coco/pkvm-guest/arm-pkvm-guest.c
+++ b/drivers/virt/coco/pkvm-guest/arm-pkvm-guest.c
@@ -82,8 +82,8 @@ static int mmio_guard_ioremap_hook(phys_addr_t phys, size_t size,
if (protval != PROT_DEVICE_nGnRE && protval != PROT_DEVICE_nGnRnE)
return 0;
+ end = PAGE_ALIGN(phys + size);
phys = PAGE_ALIGN_DOWN(phys);
- end = phys + PAGE_ALIGN(size);
while (phys < end) {
const int func_id = ARM_SMCCC_VENDOR_HYP_KVM_MMIO_GUARD_FUNC_ID;
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 201/675] hwmon: (asus-ec-sensors) fix looping over banks while reading from EC
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (199 preceding siblings ...)
2026-07-30 14:08 ` [PATCH 6.18 200/675] drivers/virt: pkvm: Fix end calculation in mmio_guard_ioremap_hook() Greg Kroah-Hartman
@ 2026-07-30 14:08 ` Greg Kroah-Hartman
2026-07-30 14:08 ` [PATCH 6.18 202/675] hwmon: (asus-ec-sensors) fix EC read intervals Greg Kroah-Hartman
` (478 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:08 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Eugene Shalygin, Guenter Roeck,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Eugene Shalygin <eugene.shalygin@gmail.com>
[ Upstream commit e741d13cc2abfc6fccebe2008057aa52e285223e ]
Do not assume there are only bank 0 and bank 1 available, just use '!='
for bank comparison.
Fixes: d0ddfd241e57 ("hwmon: (asus-ec-sensors) add driver for ASUS EC")
Signed-off-by: Eugene Shalygin <eugene.shalygin@gmail.com>
Link: https://lore.kernel.org/r/20260711074217.554656-1-eugene.shalygin@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/hwmon/asus-ec-sensors.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/hwmon/asus-ec-sensors.c b/drivers/hwmon/asus-ec-sensors.c
index 95c50d3a788ce7..aac4706cd437fe 100644
--- a/drivers/hwmon/asus-ec-sensors.c
+++ b/drivers/hwmon/asus-ec-sensors.c
@@ -1050,7 +1050,7 @@ static int asus_ec_block_read(const struct device *dev,
}
for (ireg = 0; ireg < ec->nr_registers; ireg++) {
reg_bank = register_bank(ec->registers[ireg]);
- if (reg_bank < bank) {
+ if (reg_bank != bank) {
continue;
}
ec_read(register_index(ec->registers[ireg]),
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 202/675] hwmon: (asus-ec-sensors) fix EC read intervals
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (200 preceding siblings ...)
2026-07-30 14:08 ` [PATCH 6.18 201/675] hwmon: (asus-ec-sensors) fix looping over banks while reading from EC Greg Kroah-Hartman
@ 2026-07-30 14:08 ` Greg Kroah-Hartman
2026-07-30 14:08 ` [PATCH 6.18 203/675] hwmon: (asus-ec-sensors) add missed handle for ENOMEM Greg Kroah-Hartman
` (477 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:08 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Eugene Shalygin, Guenter Roeck,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Eugene Shalygin <eugene.shalygin@gmail.com>
[ Upstream commit 60710b2af13b81da71b429d3f8b19dd70310729d ]
Take INITIAL_JIFFIES into account when setting up next update time.
Fixes: d0ddfd241e57 ("hwmon: (asus-ec-sensors) add driver for ASUS EC")
Signed-off-by: Eugene Shalygin <eugene.shalygin@gmail.com>
Link: https://lore.kernel.org/r/20260712110650.1240071-2-eugene.shalygin@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/hwmon/asus-ec-sensors.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/hwmon/asus-ec-sensors.c b/drivers/hwmon/asus-ec-sensors.c
index aac4706cd437fe..52986b64881eab 100644
--- a/drivers/hwmon/asus-ec-sensors.c
+++ b/drivers/hwmon/asus-ec-sensors.c
@@ -870,7 +870,7 @@ struct ec_sensors_data {
/* sorted list of unique register banks */
u8 banks[ASUS_EC_MAX_BANK + 1];
/* in jiffies */
- unsigned long last_updated;
+ u64 next_update;
struct lock_data lock_data;
/* number of board EC sensors */
u8 nr_sensors;
@@ -1139,13 +1139,12 @@ static int get_cached_value_or_update(const struct device *dev,
int sensor_index,
struct ec_sensors_data *state, s32 *value)
{
- if (time_after(jiffies, state->last_updated + HZ)) {
+ if (time_after64(get_jiffies_64(), state->next_update)) {
if (update_ec_sensors(dev, state)) {
dev_err(dev, "update_ec_sensors() failure\n");
return -EIO;
}
-
- state->last_updated = jiffies;
+ state->next_update = get_jiffies_64() + HZ;
}
*value = state->sensors[sensor_index].cached_value;
@@ -1263,6 +1262,7 @@ static int asus_ec_probe(struct platform_device *pdev)
if (!ec_data)
return -ENOMEM;
+ ec_data->next_update = INITIAL_JIFFIES;
dev_set_drvdata(dev, ec_data);
ec_data->board_info = pboard_info;
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 203/675] hwmon: (asus-ec-sensors) add missed handle for ENOMEM
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (201 preceding siblings ...)
2026-07-30 14:08 ` [PATCH 6.18 202/675] hwmon: (asus-ec-sensors) fix EC read intervals Greg Kroah-Hartman
@ 2026-07-30 14:08 ` Greg Kroah-Hartman
2026-07-30 14:08 ` [PATCH 6.18 204/675] smb: client: validate DFS referral PathConsumed Greg Kroah-Hartman
` (476 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:08 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Eugene Shalygin, Guenter Roeck,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Eugene Shalygin <eugene.shalygin@gmail.com>
[ Upstream commit 9813c1f49efeadbcb17e4a41972350ac783f9cac ]
Add missing return value check in the setup function.
Fixes: d0ddfd241e57 ("hwmon: (asus-ec-sensors) add driver for ASUS EC")
Signed-off-by: Eugene Shalygin <eugene.shalygin@gmail.com>
Link: https://lore.kernel.org/r/20260712130602.1256700-2-eugene.shalygin@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/hwmon/asus-ec-sensors.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/drivers/hwmon/asus-ec-sensors.c b/drivers/hwmon/asus-ec-sensors.c
index 52986b64881eab..13fd212ad40407 100644
--- a/drivers/hwmon/asus-ec-sensors.c
+++ b/drivers/hwmon/asus-ec-sensors.c
@@ -1353,9 +1353,11 @@ static int asus_ec_probe(struct platform_device *pdev)
if (!nr_count[type])
continue;
- asus_ec_hwmon_add_chan_info(asus_ec_hwmon_chan, dev,
- nr_count[type], type,
- hwmon_attributes[type]);
+ status = asus_ec_hwmon_add_chan_info(asus_ec_hwmon_chan, dev,
+ nr_count[type], type,
+ hwmon_attributes[type]);
+ if (status)
+ return status;
*ptr_asus_ec_ci++ = asus_ec_hwmon_chan++;
}
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 204/675] smb: client: validate DFS referral PathConsumed
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (202 preceding siblings ...)
2026-07-30 14:08 ` [PATCH 6.18 203/675] hwmon: (asus-ec-sensors) add missed handle for ENOMEM Greg Kroah-Hartman
@ 2026-07-30 14:08 ` Greg Kroah-Hartman
2026-07-30 14:08 ` [PATCH 6.18 205/675] ovpn: avoid putting unrelated P2P peer on socket release Greg Kroah-Hartman
` (475 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:08 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Paulo Alcantara (Red Hat),
Yichong Chen, Steve French, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Yichong Chen <chenyichong@uniontech.com>
[ Upstream commit f6f5ee2aa33b350c671721b965251c42cebb962e ]
parse_dfs_referrals() validates that the response contains the fixed
referral entry array and, on for-next, the per-referral string offsets.
However, the response also contains a PathConsumed value that is later
used for DFS path parsing.
If a malformed response provides a PathConsumed value larger than the
search name, later DFS parsing can advance beyond the end of the path.
Validate PathConsumed against the search name length before storing it in
the parsed referral.
Fixes: 4ecce920e13a ("CIFS: move DFS response parsing out of SMB1 code")
Reviewed-by: Paulo Alcantara (Red Hat) <pc@manguebit.org>
Signed-off-by: Yichong Chen <chenyichong@uniontech.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
fs/smb/client/misc.c | 34 +++++++++++++++++++++++++---------
1 file changed, 25 insertions(+), 9 deletions(-)
diff --git a/fs/smb/client/misc.c b/fs/smb/client/misc.c
index f378437113129a..d9771d224527d7 100644
--- a/fs/smb/client/misc.c
+++ b/fs/smb/client/misc.c
@@ -957,6 +957,8 @@ parse_dfs_referrals(struct get_dfs_referral_rsp *rsp, u32 rsp_size,
int i, rc = 0;
char *data_end;
struct dfs_referral_level_3 *ref;
+ unsigned int path_consumed;
+ size_t search_name_len;
if (rsp_size < sizeof(*rsp)) {
cifs_dbg(VFS | ONCE,
@@ -1004,6 +1006,7 @@ parse_dfs_referrals(struct get_dfs_referral_rsp *rsp, u32 rsp_size,
rc = -ENOMEM;
goto parse_DFS_referrals_exit;
}
+ search_name_len = strlen(searchName);
/* collect necessary data from referrals */
for (i = 0; i < *num_of_nodes; i++) {
@@ -1012,21 +1015,34 @@ parse_dfs_referrals(struct get_dfs_referral_rsp *rsp, u32 rsp_size,
struct dfs_info3_param *node = (*target_nodes)+i;
node->flags = le32_to_cpu(rsp->DFSFlags);
+ path_consumed = le16_to_cpu(rsp->PathConsumed);
if (is_unicode) {
- __le16 *tmp = kmalloc(strlen(searchName)*2 + 2,
- GFP_KERNEL);
- if (tmp == NULL) {
+ size_t search_name_utf16_len = search_name_len * 2 + 2;
+ __le16 *tmp;
+
+ if (path_consumed > search_name_utf16_len) {
+ rc = -EINVAL;
+ goto parse_DFS_referrals_exit;
+ }
+
+ tmp = kmalloc(search_name_utf16_len, GFP_KERNEL);
+ if (!tmp) {
rc = -ENOMEM;
goto parse_DFS_referrals_exit;
}
- cifsConvertToUTF16((__le16 *) tmp, searchName,
+ cifsConvertToUTF16((__le16 *)tmp, searchName,
PATH_MAX, nls_codepage, remap);
- node->path_consumed = cifs_utf16_bytes(tmp,
- le16_to_cpu(rsp->PathConsumed),
- nls_codepage);
+ node->path_consumed = cifs_utf16_bytes(tmp, path_consumed,
+ nls_codepage);
kfree(tmp);
- } else
- node->path_consumed = le16_to_cpu(rsp->PathConsumed);
+ } else {
+ if (path_consumed > search_name_len) {
+ rc = -EINVAL;
+ goto parse_DFS_referrals_exit;
+ }
+
+ node->path_consumed = path_consumed;
+ }
node->server_type = le16_to_cpu(ref->ServerType);
node->ref_flag = le16_to_cpu(ref->ReferralEntryFlags);
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 205/675] ovpn: avoid putting unrelated P2P peer on socket release
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (203 preceding siblings ...)
2026-07-30 14:08 ` [PATCH 6.18 204/675] smb: client: validate DFS referral PathConsumed Greg Kroah-Hartman
@ 2026-07-30 14:08 ` Greg Kroah-Hartman
2026-07-30 14:08 ` [PATCH 6.18 206/675] selftests/net: ovpn: fix getaddrinfo memory leak in ovpn_parse_remote() Greg Kroah-Hartman
` (474 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:08 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Qing Ming, Simon Horman,
Antonio Quartulli, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Qing Ming <a0yami@mailbox.org>
[ Upstream commit b52c5103f64ee825996ca1ab8df7283cde8c5f86 ]
ovpn_peer_release_p2p() is called when an OVPN UDP socket is being
destroyed. It checks the currently published P2P peer and releases it only
if that peer still uses the socket being destroyed.
A peer replacement can publish a new peer before the old UDP socket is
destroyed. When the old socket destruction path runs afterwards,
ovpn_peer_release_p2p() observes the new peer through ovpn->peer. Since the
new peer uses a different socket, the function takes the socket mismatch
branch.
That branch still calls ovpn_peer_put(peer). At this point, however, peer
is the currently published replacement peer, not the peer associated with
the socket being destroyed. Dropping its reference can free it while
ovpn->peer still points to it, leading to later use-after-free accesses
from the peer and socket cleanup paths.
KASAN reports this as a slab-use-after-free on the kmalloc-1k ovpn_peer
object. In the reproducer, the object is allocated from ovpn_peer_new() via
ovpn_nl_peer_new_doit(), and freed through ovpn_peer_release_rcu() from RCU
callback processing. Observed access sites include ovpn_peer_remove(),
ovpn_socket_release(), ovpn_nl_peer_del_notify(), and unlock_ovpn().
Fix this by returning from the socket mismatch branch without putting the
peer.
Fixes: f6226ae7a0cd ("ovpn: introduce the ovpn_socket object")
Signed-off-by: Qing Ming <a0yami@mailbox.org>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Antonio Quartulli <antonio@openvpn.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ovpn/peer.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/drivers/net/ovpn/peer.c b/drivers/net/ovpn/peer.c
index 87a83321f1dd5f..795741645e5eb0 100644
--- a/drivers/net/ovpn/peer.c
+++ b/drivers/net/ovpn/peer.c
@@ -1162,7 +1162,6 @@ static void ovpn_peer_release_p2p(struct ovpn_priv *ovpn, struct sock *sk,
ovpn_sock = rcu_access_pointer(peer->sock);
if (!ovpn_sock || ovpn_sock->sk != sk) {
spin_unlock_bh(&ovpn->lock);
- ovpn_peer_put(peer);
return;
}
}
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 206/675] selftests/net: ovpn: fix getaddrinfo memory leak in ovpn_parse_remote()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (204 preceding siblings ...)
2026-07-30 14:08 ` [PATCH 6.18 205/675] ovpn: avoid putting unrelated P2P peer on socket release Greg Kroah-Hartman
@ 2026-07-30 14:08 ` Greg Kroah-Hartman
2026-07-30 14:08 ` [PATCH 6.18 207/675] ovpn: fix use after free in unlock_ovpn() Greg Kroah-Hartman
` (473 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:08 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, longlong yan, Antonio Quartulli,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: longlong yan <yanlonglong@kylinos.cn>
[ Upstream commit 0bd9cfebc1c91e1066e56d6261b99691b9df6008 ]
The ovpn_parse_remote() function has two memory management issues:
1. When both 'host' and 'vpnip' are non-NULL, the first getaddrinfo()
allocation is leaked because 'result' is overwritten by the second
getaddrinfo() call without freeing the first allocation.
2. When both 'host' and 'vpnip' are NULL, 'result' is an uninitialized
stack variable passed to freeaddrinfo(), which is undefined behavior.
Fix by initializing 'result' to NULL and calling freeaddrinfo() after
the first getaddrinfo() result is consumed.
Fixes: 959bc330a439 ("testing/selftests: add test tool and scripts for ovpn module")
Signed-off-by: longlong yan <yanlonglong@kylinos.cn>
Signed-off-by: Antonio Quartulli <antonio@openvpn.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
tools/testing/selftests/net/ovpn/ovpn-cli.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/tools/testing/selftests/net/ovpn/ovpn-cli.c b/tools/testing/selftests/net/ovpn/ovpn-cli.c
index 0a5226196a2e73..44418118f6ea7a 100644
--- a/tools/testing/selftests/net/ovpn/ovpn-cli.c
+++ b/tools/testing/selftests/net/ovpn/ovpn-cli.c
@@ -1746,7 +1746,7 @@ static int ovpn_parse_remote(struct ovpn_ctx *ovpn, const char *host,
const char *service, const char *vpnip)
{
int ret;
- struct addrinfo *result;
+ struct addrinfo *result = NULL;
struct addrinfo hints = {
.ai_family = ovpn->sa_family,
.ai_socktype = SOCK_DGRAM,
@@ -1770,6 +1770,8 @@ static int ovpn_parse_remote(struct ovpn_ctx *ovpn, const char *host,
}
memcpy(&ovpn->remote, result->ai_addr, result->ai_addrlen);
+ freeaddrinfo(result);
+ result = NULL;
}
if (vpnip) {
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 207/675] ovpn: fix use after free in unlock_ovpn()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (205 preceding siblings ...)
2026-07-30 14:08 ` [PATCH 6.18 206/675] selftests/net: ovpn: fix getaddrinfo memory leak in ovpn_parse_remote() Greg Kroah-Hartman
@ 2026-07-30 14:08 ` Greg Kroah-Hartman
2026-07-30 14:08 ` [PATCH 6.18 208/675] ovpn: use monotonic clock for peer keepalive timeouts Greg Kroah-Hartman
` (472 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:08 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Marco Baffo, Antonio Quartulli,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Marco Baffo <marco@mandelbit.com>
[ Upstream commit e1ad6fe5db719874efa45b2caf9934552e09fc43 ]
unlock_ovpn() iterates over the release_list using llist_for_each_entry()
and drops the peer reference inside the loop body via ovpn_peer_put().
If this drops the last reference, the peer is eventually freed. However,
llist_for_each_entry() reads peer->release_entry.next in the loop advance
expression, which runs after the body. By that time the peer may have
already been freed, resulting in a use after free when advancing to the
next list entry.
Fix this by using llist_for_each_entry_safe(), which caches the next
pointer before executing the loop body.
Fixes: 80747caef33d ("ovpn: introduce the ovpn_peer object")
Signed-off-by: Marco Baffo <marco@mandelbit.com>
Signed-off-by: Antonio Quartulli <antonio@openvpn.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ovpn/peer.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ovpn/peer.c b/drivers/net/ovpn/peer.c
index 795741645e5eb0..7e7ccae1325179 100644
--- a/drivers/net/ovpn/peer.c
+++ b/drivers/net/ovpn/peer.c
@@ -26,11 +26,12 @@ static void unlock_ovpn(struct ovpn_priv *ovpn,
struct llist_head *release_list)
__releases(&ovpn->lock)
{
- struct ovpn_peer *peer;
+ struct ovpn_peer *peer, *next;
spin_unlock_bh(&ovpn->lock);
- llist_for_each_entry(peer, release_list->first, release_entry) {
+ llist_for_each_entry_safe(peer, next, release_list->first,
+ release_entry) {
ovpn_socket_release(peer);
ovpn_peer_put(peer);
}
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 208/675] ovpn: use monotonic clock for peer keepalive timeouts
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (206 preceding siblings ...)
2026-07-30 14:08 ` [PATCH 6.18 207/675] ovpn: fix use after free in unlock_ovpn() Greg Kroah-Hartman
@ 2026-07-30 14:08 ` Greg Kroah-Hartman
2026-07-30 14:08 ` [PATCH 6.18 209/675] hwmon: occ: validate poll response sensor blocks Greg Kroah-Hartman
` (471 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:08 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Marco Baffo, Antonio Quartulli,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Marco Baffo <marco@mandelbit.com>
[ Upstream commit f7e6287ccd3abeed9e638b581dc3fdf742106ba3 ]
Replace ktime_get_real_seconds() with the monotonic
ktime_get_boottime_seconds() to ensure the keepalive mechanism is robust
against system clock modifications.
Right now, the driver uses ktime_get_real_seconds() to track peer
timeouts, relying on the system wall-clock.
An administrative time adjustment or an NTP sync that steps the clock
forward can cause `now' to instantly exceed `last_recv + timeout'.
When this occurs, the driver artificially expires healthy peers.
Depending on the OpenVPN user-space configuration, this triggers a
premature tunnel restart (if --keepalive or --ping-restart is used) or
a complete disconnection of the client (if --ping-exit is used).
Fixes: 3ecfd9349f40 ("ovpn: implement keepalive mechanism")
Signed-off-by: Marco Baffo <marco@mandelbit.com>
Signed-off-by: Antonio Quartulli <antonio@openvpn.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ovpn/io.c | 4 ++--
drivers/net/ovpn/peer.c | 4 ++--
2 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/net/ovpn/io.c b/drivers/net/ovpn/io.c
index c03e58e28a860d..0008a3d30c198b 100644
--- a/drivers/net/ovpn/io.c
+++ b/drivers/net/ovpn/io.c
@@ -137,7 +137,7 @@ void ovpn_decrypt_post(void *data, int ret)
}
/* keep track of last received authenticated packet for keepalive */
- WRITE_ONCE(peer->last_recv, ktime_get_real_seconds());
+ WRITE_ONCE(peer->last_recv, ktime_get_boottime_seconds());
rcu_read_lock();
sock = rcu_dereference(peer->sock);
@@ -291,7 +291,7 @@ void ovpn_encrypt_post(void *data, int ret)
ovpn_peer_stats_increment_tx(&peer->link_stats, orig_len);
/* keep track of last sent packet for keepalive */
- WRITE_ONCE(peer->last_sent, ktime_get_real_seconds());
+ WRITE_ONCE(peer->last_sent, ktime_get_boottime_seconds());
/* skb passed down the stack - don't free it */
skb = NULL;
err_unlock:
diff --git a/drivers/net/ovpn/peer.c b/drivers/net/ovpn/peer.c
index 7e7ccae1325179..b7c103fda2ae68 100644
--- a/drivers/net/ovpn/peer.c
+++ b/drivers/net/ovpn/peer.c
@@ -45,7 +45,7 @@ static void unlock_ovpn(struct ovpn_priv *ovpn,
*/
void ovpn_peer_keepalive_set(struct ovpn_peer *peer, u32 interval, u32 timeout)
{
- time64_t now = ktime_get_real_seconds();
+ time64_t now = ktime_get_boottime_seconds();
netdev_dbg(peer->ovpn->dev,
"scheduling keepalive for peer %u: interval=%u timeout=%u\n",
@@ -1352,7 +1352,7 @@ void ovpn_peer_keepalive_work(struct work_struct *work)
{
struct ovpn_priv *ovpn = container_of(work, struct ovpn_priv,
keepalive_work.work);
- time64_t next_run = 0, now = ktime_get_real_seconds();
+ time64_t next_run = 0, now = ktime_get_boottime_seconds();
LLIST_HEAD(release_list);
spin_lock_bh(&ovpn->lock);
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 209/675] hwmon: occ: validate poll response sensor blocks
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (207 preceding siblings ...)
2026-07-30 14:08 ` [PATCH 6.18 208/675] ovpn: use monotonic clock for peer keepalive timeouts Greg Kroah-Hartman
@ 2026-07-30 14:08 ` Greg Kroah-Hartman
2026-07-30 14:09 ` [PATCH 6.18 210/675] regulator: mt6358: use regmap helper to read fixed LDO calibration Greg Kroah-Hartman
` (470 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:08 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Pengpeng Hou, Guenter Roeck,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Pengpeng Hou <pengpeng@iscas.ac.cn>
[ Upstream commit 70e76e700fc6c46afb4e17aec099a1ea089b4a22 ]
The OCC poll response parser walks a counted list of sensor data blocks.
It used the static backing-array capacity as the parse boundary, but a
transport response makes only data_length bytes current and valid. A
truncated response can therefore make the parser consume a block header or
block extent outside the current response.
Use data_length as the parent boundary, prove the fixed poll header and
each current block header before reading them, and prove the complete block
before advancing. Keep parsed sensor metadata local until the complete
response has passed validation, then publish it. Propagate
malformed-response errors before publishing the OCC as active.
Fixes: aa195fe49b03 ("hwmon (occ): Parse OCC poll response")
Signed-off-by: Pengpeng Hou <pengpeng@iscas.ac.cn>
Link: https://lore.kernel.org/r/20260720115826.14813-1-pengpeng@iscas.ac.cn
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/hwmon/occ/common.c | 38 ++++++++++++++++++++++++++++++--------
1 file changed, 30 insertions(+), 8 deletions(-)
diff --git a/drivers/hwmon/occ/common.c b/drivers/hwmon/occ/common.c
index e18e80e832fd3f..175208d712b06e 100644
--- a/drivers/hwmon/occ/common.c
+++ b/drivers/hwmon/occ/common.c
@@ -1052,32 +1052,49 @@ static int occ_setup_sensor_attrs(struct occ *occ)
}
/* only need to do this once at startup, as OCC won't change sensors on us */
-static void occ_parse_poll_response(struct occ *occ)
+static int occ_parse_poll_response(struct occ *occ)
{
unsigned int i, old_offset, offset = 0, size = 0;
+ u16 data_length;
struct occ_sensor *sensor;
- struct occ_sensors *sensors = &occ->sensors;
+ struct occ_sensors parsed = {};
+ struct occ_sensors *sensors = &parsed;
struct occ_response *resp = &occ->resp;
struct occ_poll_response *poll =
(struct occ_poll_response *)&resp->data[0];
struct occ_poll_response_header *header = &poll->header;
struct occ_sensor_data_block *block = &poll->block;
+ data_length = get_unaligned_be16(&resp->data_length);
+ if (data_length < sizeof(*header) || data_length > OCC_RESP_DATA_BYTES) {
+ dev_err(occ->bus_dev, "invalid OCC poll response length %u\n",
+ data_length);
+ return -EMSGSIZE;
+ }
+
dev_info(occ->bus_dev, "OCC found, code level: %.16s\n",
header->occ_code_level);
for (i = 0; i < header->num_sensor_data_blocks; ++i) {
block = (struct occ_sensor_data_block *)((u8 *)block + offset);
+ if (size + sizeof(*header) + sizeof(block->header) >
+ data_length) {
+ dev_err(occ->bus_dev,
+ "truncated OCC sensor block header\n");
+ return -EMSGSIZE;
+ }
+
old_offset = offset;
offset = (block->header.num_sensors *
block->header.sensor_length) + sizeof(block->header);
- size += offset;
/* validate all the length/size fields */
- if ((size + sizeof(*header)) >= OCC_RESP_DATA_BYTES) {
- dev_warn(occ->bus_dev, "exceeded response buffer\n");
- return;
+ if (size + sizeof(*header) + offset > data_length) {
+ dev_err(occ->bus_dev,
+ "exceeded OCC poll response length\n");
+ return -EMSGSIZE;
}
+ size += offset;
dev_dbg(occ->bus_dev, " %04x..%04x: %.4s (%d sensors)\n",
old_offset, offset - 1, block->header.eye_catcher,
@@ -1107,6 +1124,9 @@ static void occ_parse_poll_response(struct occ *occ)
dev_dbg(occ->bus_dev, "Max resp size: %u+%zd=%zd\n", size,
sizeof(*header), size + sizeof(*header));
+ occ->sensors = parsed;
+
+ return 0;
}
int occ_active(struct occ *occ, bool active)
@@ -1138,10 +1158,12 @@ int occ_active(struct occ *occ, bool active)
goto unlock;
}
- occ->active = true;
occ->next_update = jiffies + OCC_UPDATE_FREQUENCY;
- occ_parse_poll_response(occ);
+ rc = occ_parse_poll_response(occ);
+ if (rc)
+ goto unlock;
+ occ->active = true;
rc = occ_setup_sensor_attrs(occ);
if (rc) {
dev_err(occ->bus_dev,
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 210/675] regulator: mt6358: use regmap helper to read fixed LDO calibration
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (208 preceding siblings ...)
2026-07-30 14:08 ` [PATCH 6.18 209/675] hwmon: occ: validate poll response sensor blocks Greg Kroah-Hartman
@ 2026-07-30 14:09 ` Greg Kroah-Hartman
2026-07-30 14:09 ` [PATCH 6.18 211/675] Bluetooth: btusb: validate Realtek vendor event length Greg Kroah-Hartman
` (469 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:09 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Daniel Golle, Chen-Yu Tsai,
Mark Brown, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Daniel Golle <daniel@makrotopia.org>
[ Upstream commit 1d26f125501f3fbe6c259ab75bf6516299a0bf0e ]
The "fixed" LDOs with output voltage calibration use
mt6358_get_buck_voltage_sel as their get_voltage_sel op, but the
MT6358_REG_FIXED and MT6366_REG_FIXED entries do not populate
da_vsel_reg/da_vsel_mask. The op therefore reads register 0x0 with a
zero mask and shifts the result by ffs(0) - 1 = -1, which is undefined
behaviour and gets flagged by UBSAN on every boot on MT6366 boards:
UBSAN: shift-out-of-bounds in drivers/regulator/mt6358-regulator.c:384:38
shift exponent -1 is negative
Call trace:
mt6358_get_buck_voltage_sel+0xc8/0x120
regulator_get_voltage_rdev+0x70/0x170
set_machine_constraints+0x504/0xc38
regulator_register+0x324/0xc68
Besides the undefined shift, the returned selector is always 0, so the
actual calibration offset programmed in <reg>_ANA_CON0 is never
reported.
The descriptor already carries the correct vsel_reg/vsel_mask (the
ANA_CON0 calibration field), matching the regulator_set_voltage_sel_regmap
op already in use. Read the selector back through
regulator_get_voltage_sel_regmap instead.
Fixes: cf08fa74c716 ("regulator: mt6358: Add output voltage fine tuning to fixed regulators")
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Reviewed-by: Chen-Yu Tsai <wens@kernel.org>
Tested-by: Chen-Yu Tsai <wens@kernel.org>
Link: https://patch.msgid.link/dcd98d81dede338c9bbb9700a9613c848b702e49.1784336005.git.daniel@makrotopia.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/regulator/mt6358-regulator.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/regulator/mt6358-regulator.c b/drivers/regulator/mt6358-regulator.c
index e4745f616cea3b..44bef0bdfdbe35 100644
--- a/drivers/regulator/mt6358-regulator.c
+++ b/drivers/regulator/mt6358-regulator.c
@@ -492,7 +492,7 @@ static const struct regulator_ops mt6358_volt_fixed_ops = {
.list_voltage = regulator_list_voltage_linear,
.map_voltage = regulator_map_voltage_linear,
.set_voltage_sel = regulator_set_voltage_sel_regmap,
- .get_voltage_sel = mt6358_get_buck_voltage_sel,
+ .get_voltage_sel = regulator_get_voltage_sel_regmap,
.set_voltage_time_sel = regulator_set_voltage_time_sel,
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 211/675] Bluetooth: btusb: validate Realtek vendor event length
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (209 preceding siblings ...)
2026-07-30 14:09 ` [PATCH 6.18 210/675] regulator: mt6358: use regmap helper to read fixed LDO calibration Greg Kroah-Hartman
@ 2026-07-30 14:09 ` Greg Kroah-Hartman
2026-07-30 14:09 ` [PATCH 6.18 212/675] net: phy: marvell: fix return code Greg Kroah-Hartman
` (468 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:09 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Pengpeng Hou, Luiz Augusto von Dentz,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Pengpeng Hou <pengpeng@iscas.ac.cn>
[ Upstream commit df541cd485ff80a5ddc579d99687bc7506df9851 ]
btusb_recv_event_realtek() reads the event code at data[0] and the Realtek
subevent code at data[2] before deciding whether to consume a vendor event
as a coredump.
For example, the two-byte event ff 00 contains a complete vendor-event
header declaring zero parameters. The old classifier still reads a
nonexistent third byte and can misclassify the event as a coredump if the
adjacent byte is 0x34.
Require the HCI event header and first parameter to be present before
inspecting the Realtek subevent code. Short events continue through the
normal HCI receive path, which owns their protocol validation.
Fixes: 044014ce85a1 ("Bluetooth: btrtl: Add Realtek devcoredump support")
Signed-off-by: Pengpeng Hou <pengpeng@iscas.ac.cn>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/bluetooth/btusb.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index b9e5adecfed609..fea3cb502a4e03 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -2716,7 +2716,9 @@ static int btusb_setup_realtek(struct hci_dev *hdev)
static int btusb_recv_event_realtek(struct hci_dev *hdev, struct sk_buff *skb)
{
- if (skb->data[0] == HCI_VENDOR_PKT && skb->data[2] == RTK_SUB_EVENT_CODE_COREDUMP) {
+ if (skb->len >= HCI_EVENT_HDR_SIZE + 1 &&
+ skb->data[0] == HCI_VENDOR_PKT &&
+ skb->data[2] == RTK_SUB_EVENT_CODE_COREDUMP) {
struct rtk_dev_coredump_hdr hdr = {
.code = RTK_DEVCOREDUMP_CODE_MEMDUMP,
};
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 212/675] net: phy: marvell: fix return code
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (210 preceding siblings ...)
2026-07-30 14:09 ` [PATCH 6.18 211/675] Bluetooth: btusb: validate Realtek vendor event length Greg Kroah-Hartman
@ 2026-07-30 14:09 ` Greg Kroah-Hartman
2026-07-30 14:09 ` [PATCH 6.18 213/675] netlink: specs: rt-link: convert bridge port flag attributes to u8 Greg Kroah-Hartman
` (467 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:09 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Michael Walle, Maxime Chevallier,
Jakub Kicinski, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Michael Walle <mwalle@kernel.org>
[ Upstream commit 7d8ca62d6a9ef593780161586b4efc811ac094fe ]
Return the correct error code, not the value written to the register.
Fixes: a219912e0fec ("net: phy: marvell: implement config_inband() method")
Signed-off-by: Michael Walle <mwalle@kernel.org>
Reviewed-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Link: https://patch.msgid.link/20260706120637.1947685-1-mwalle@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/phy/marvell.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/phy/marvell.c b/drivers/net/phy/marvell.c
index c248c90510ae51..f191b8c4321887 100644
--- a/drivers/net/phy/marvell.c
+++ b/drivers/net/phy/marvell.c
@@ -753,7 +753,7 @@ static int m88e1111_config_inband(struct phy_device *phydev, unsigned int modes)
err = phy_modify(phydev, MII_M1111_PHY_EXT_SR,
MII_M1111_HWCFG_SERIAL_AN_BYPASS, extsr);
if (err < 0)
- return extsr;
+ return err;
return phy_modify_paged(phydev, MII_MARVELL_FIBER_PAGE, MII_BMCR,
BMCR_ANENABLE, bmcr);
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 213/675] netlink: specs: rt-link: convert bridge port flag attributes to u8
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (211 preceding siblings ...)
2026-07-30 14:09 ` [PATCH 6.18 212/675] net: phy: marvell: fix return code Greg Kroah-Hartman
@ 2026-07-30 14:09 ` Greg Kroah-Hartman
2026-07-30 14:09 ` [PATCH 6.18 214/675] net/packet: avoid fanout hook re-registration after unregister Greg Kroah-Hartman
` (466 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:09 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Petr Machata, Nikolay Aleksandrov,
Ido Schimmel, Danielle Ratson, Jakub Kicinski, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Danielle Ratson <danieller@nvidia.com>
[ Upstream commit f6e3b21608e974c4aaa4cfd73a239dacf1d8a9a3 ]
A number of IFLA_BRPORT_* attributes are documented in the rt-link spec
as having the "flag" type, i.e. a payload-less NLA_FLAG attribute whose
meaning is presence-only. This does not match the kernel, which emits
these attributes with nla_put_u8() and validates them as NLA_U8 in
br_port_policy[]. The values are not mere presence flags but carry a u8
payload (0/1).
Convert these bridge port attributes from "flag" to "u8" so the spec
reflects the actual wire format.
Fixes: 077b6022d24b ("doc/netlink/specs: Add sub-message type to rt_link family")
Reviewed-by: Petr Machata <petrm@nvidia.com>
Acked-by: Nikolay Aleksandrov <nikolay@nvidia.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Danielle Ratson <danieller@nvidia.com>
Link: https://patch.msgid.link/a57cdfcfc4a6dcb92106c25b4dde5059fde2bd44.1783236731.git.danieller@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
Documentation/netlink/specs/rt-link.yaml | 40 ++++++++++++------------
1 file changed, 20 insertions(+), 20 deletions(-)
diff --git a/Documentation/netlink/specs/rt-link.yaml b/Documentation/netlink/specs/rt-link.yaml
index ae4db7e032770f..692b3cd47c3108 100644
--- a/Documentation/netlink/specs/rt-link.yaml
+++ b/Documentation/netlink/specs/rt-link.yaml
@@ -1564,31 +1564,31 @@ attribute-sets:
type: u32
-
name: mode
- type: flag
+ type: u8
-
name: guard
- type: flag
+ type: u8
-
name: protect
- type: flag
+ type: u8
-
name: fast-leave
- type: flag
+ type: u8
-
name: learning
- type: flag
+ type: u8
-
name: unicast-flood
- type: flag
+ type: u8
-
name: proxyarp
- type: flag
+ type: u8
-
name: learning-sync
- type: flag
+ type: u8
-
name: proxyarp-wifi
- type: flag
+ type: u8
-
name: root-id
type: binary
@@ -1635,34 +1635,34 @@ attribute-sets:
type: pad
-
name: mcast-flood
- type: flag
+ type: u8
-
name: mcast-to-ucast
- type: flag
+ type: u8
-
name: vlan-tunnel
- type: flag
+ type: u8
-
name: bcast-flood
- type: flag
+ type: u8
-
name: group-fwd-mask
type: u16
-
name: neigh-suppress
- type: flag
+ type: u8
-
name: isolated
- type: flag
+ type: u8
-
name: backup-port
type: u32
-
name: mrp-ring-open
- type: flag
+ type: u8
-
name: mrp-in-open
- type: flag
+ type: u8
-
name: mcast-eht-hosts-limit
type: u32
@@ -1671,10 +1671,10 @@ attribute-sets:
type: u32
-
name: locked
- type: flag
+ type: u8
-
name: mab
- type: flag
+ type: u8
-
name: mcast-n-groups
type: u32
@@ -1683,7 +1683,7 @@ attribute-sets:
type: u32
-
name: neigh-vlan-suppress
- type: flag
+ type: u8
-
name: backup-nhid
type: u32
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 214/675] net/packet: avoid fanout hook re-registration after unregister
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (212 preceding siblings ...)
2026-07-30 14:09 ` [PATCH 6.18 213/675] netlink: specs: rt-link: convert bridge port flag attributes to u8 Greg Kroah-Hartman
@ 2026-07-30 14:09 ` Greg Kroah-Hartman
2026-07-30 14:09 ` [PATCH 6.18 215/675] bonding: fix devconf_all NULL dereference when IPv6 is disabled Greg Kroah-Hartman
` (465 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:09 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, David Lee, Willem de Bruijn,
Jakub Kicinski, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: David Lee <david.lee@trailofbits.com>
[ Upstream commit 50aff80475abd3533eef4320477037e6fcc6b56e ]
packet_set_ring() temporarily detaches a socket from packet delivery while
reconfiguring its ring. It records the previous running state, clears
po->num, unregisters the protocol hook when needed, drops po->bind_lock,
and later restores po->num and re-registers the hook from the saved
was_running value.
That unlocked window can race with NETDEV_UNREGISTER. The notifier can
observe the socket as not running, skip __unregister_prot_hook(), and
invalidate the per-socket binding by setting po->ifindex to -1 and clearing
po->prot_hook.dev. A one-member fanout group can still retain its shared
fanout hook device pointer. When packet_set_ring() resumes, re-registering
solely from the stale was_running state can re-add the fanout hook after
the device has been unregistered.
Treat po->ifindex == -1 as an invalidated binding after reacquiring
po->bind_lock. This is distinct from ifindex 0, the normal
unbound/wildcard state: ifindex -1 marks an existing device binding that
was invalidated when the device was unregistered. Restore po->num as
before, but do not re-register the hook if device unregister already
detached the socket.
Fixes: dc99f600698d ("packet: Add fanout support.")
Link: https://lore.kernel.org/netdev/20260701113947.23180-1-david.lee@trailofbits.com/
Signed-off-by: David Lee <david.lee@trailofbits.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Link: https://patch.msgid.link/20260707104440.833129-1-david.lee@trailofbits.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/packet/af_packet.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index 8b3961fba750b9..2989f1481aef45 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -4561,7 +4561,11 @@ static int packet_set_ring(struct sock *sk, union tpacket_req_u *req_u,
spin_lock(&po->bind_lock);
WRITE_ONCE(po->num, num);
- if (was_running)
+ /*
+ * NETDEV_UNREGISTER may have invalidated the binding while bind_lock
+ * was dropped above. Do not re-add a fanout hook to a dead device.
+ */
+ if (was_running && READ_ONCE(po->ifindex) != -1)
register_prot_hook(sk);
spin_unlock(&po->bind_lock);
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 215/675] bonding: fix devconf_all NULL dereference when IPv6 is disabled
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (213 preceding siblings ...)
2026-07-30 14:09 ` [PATCH 6.18 214/675] net/packet: avoid fanout hook re-registration after unregister Greg Kroah-Hartman
@ 2026-07-30 14:09 ` Greg Kroah-Hartman
2026-07-30 14:09 ` [PATCH 6.18 216/675] rds: drop incoming messages that cross network namespace boundaries Greg Kroah-Hartman
` (464 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:09 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Qianheng Peng, Zhaolong Zhang,
Hangbin Liu, Jakub Kicinski, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Zhaolong Zhang <zhangzl68@chinatelecom.cn>
[ Upstream commit 1c975de3343cdef506f2eecc833cc1f14b0401c4 ]
When booting with the 'ipv6.disable=1' parameter, the devconf_all is
never initialized because inet6_init() exits before addrconf_init() is
called which initializes it. bond_send_validate(), however, will still
call bond_ns_send_all() even ipv6 is indeed disabled. It will lead to
NULL derefence of net->ipv6.devconf_all in ip6_pol_route().
BUG: kernel NULL pointer dereference, address: 000000000000000c
[...]
Workqueue: bond0 bond_arp_monitor [bonding]
RIP: 0010:ip6_pol_route+0x69/0x480
[...]
Call Trace:
<TASK>
? srso_return_thunk+0x5/0x5f
? __pfx_ip6_pol_route_output+0x10/0x10
fib6_rule_lookup+0xfe/0x260
? wakeup_preempt+0x8a/0x90
? srso_return_thunk+0x5/0x5f
? srso_return_thunk+0x5/0x5f
? sched_balance_rq+0x369/0x810
ip6_route_output_flags+0xd7/0x170
bond_ns_send_all+0xde/0x280 [bonding]
bond_ab_arp_probe+0x296/0x320 [bonding]
? srso_return_thunk+0x5/0x5f
bond_activebackup_arp_mon+0xb4/0x2c0 [bonding]
process_one_work+0x196/0x370
worker_thread+0x1af/0x320
? srso_return_thunk+0x5/0x5f
? __pfx_worker_thread+0x10/0x10
kthread+0xe3/0x120
? __pfx_kthread+0x10/0x10
ret_from_fork+0x199/0x260
? __pfx_kthread+0x10/0x10
ret_from_fork_asm+0x1a/0x30
</TASK>
Fix this by adding ipv6_mod_enabled() condition check in the caller.
Fixes: 4e24be018eb9 ("bonding: add new parameter ns_targets")
Signed-off-by: Qianheng Peng <pengqh1@chinatelecom.cn>
Signed-off-by: Zhaolong Zhang <zhangzl68@chinatelecom.cn>
Reviewed-by: Hangbin Liu <liuhangbin@gmail.com>
Link: https://patch.msgid.link/20260707010622.487333-1-zhangzl2013@126.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/bonding/bond_main.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index e38cae22fe025e..52af663e12e0c1 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -3422,7 +3422,8 @@ static void bond_send_validate(struct bonding *bond, struct slave *slave)
{
bond_arp_send_all(bond, slave);
#if IS_ENABLED(CONFIG_IPV6)
- bond_ns_send_all(bond, slave);
+ if (likely(ipv6_mod_enabled()))
+ bond_ns_send_all(bond, slave);
#endif
}
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 216/675] rds: drop incoming messages that cross network namespace boundaries
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (214 preceding siblings ...)
2026-07-30 14:09 ` [PATCH 6.18 215/675] bonding: fix devconf_all NULL dereference when IPv6 is disabled Greg Kroah-Hartman
@ 2026-07-30 14:09 ` Greg Kroah-Hartman
2026-07-30 14:09 ` [PATCH 6.18 217/675] gtp: parse extension headers before reading inner protocol Greg Kroah-Hartman
` (463 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:09 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Aldo Ariel Panzardo,
Allison Henderson, Paolo Abeni, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Aldo Ariel Panzardo <qwe.aldo@gmail.com>
[ Upstream commit 5521ae71e32a8069ed4ca6e792179dc57bc43ab2 ]
rds_find_bound() looks up the destination socket using a global
rhashtable keyed solely on (addr, port, scope_id). Network namespaces
are not part of the key, so a sender in netns A can deliver an incoming
message (inc) to a socket that lives in a different netns B.
When this happens, inc->i_conn points to an rds_connection whose c_net
is netns A, but the receiving rs lives in netns B. Once the child
process that created netns A exits, cleanup_net() calls
rds_loop_exit_net() -> rds_loop_kill_conns() -> rds_conn_destroy(),
freeing that connection. If the survivor socket in netns B still holds
the inc, any subsequent dereference of inc->i_conn is a use-after-free.
There are two dangerous sites in rds_clear_recv_queue():
1. inc->i_conn->c_lcong (offset 88 of freed rds_connection, size 200)
read via rds_recv_rcvbuf_delta() -- confirmed by KASAN.
2. inc->i_conn->c_trans->inc_free(inc) (function pointer at offset 80)
called via rds_inc_put() when the inc refcount reaches zero -- same
race window, potential call-through-freed-object primitive.
The bug is reachable from unprivileged user namespaces
(CLONE_NEWUSER + CLONE_NEWNET), available since Linux 3.8.
Fix this by rejecting the delivery in rds_recv_incoming() when the
socket returned by rds_find_bound() belongs to a different network
namespace than the connection that carried the message. Use the
existing rds_conn_net() / sock_net() helpers and net_eq() for the
comparison.
Fixes: c809195f5523 ("rds: clean up loopback rds_connections on netns deletion")
Signed-off-by: Aldo Ariel Panzardo <qwe.aldo@gmail.com>
Reviewed-by: Allison Henderson <achender@kernel.org>
Tested-by: Allison Henderson <achender@kernel.org>
Signed-off-by: Allison Henderson <achender@kernel.org>
Link: https://patch.msgid.link/20260708024314.601139-1-achender@kernel.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/rds/recv.c | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/net/rds/recv.c b/net/rds/recv.c
index 66205d6924bf3d..4b12fa4f1e7869 100644
--- a/net/rds/recv.c
+++ b/net/rds/recv.c
@@ -366,6 +366,21 @@ void rds_recv_incoming(struct rds_connection *conn, struct in6_addr *saddr,
goto out;
}
+ /*
+ * rds_find_bound() uses a global (netns-agnostic) hash table.
+ * An RDS connection created in netns A can match a socket bound
+ * in the init netns, delivering inc cross-netns with inc->i_conn
+ * pointing into netns A. When cleanup_net() then frees that conn,
+ * any subsequent dereference of inc->i_conn is a use-after-free.
+ * Drop the inc if the receiving socket lives in a different netns.
+ */
+ if (!net_eq(sock_net(rds_rs_to_sk(rs)), rds_conn_net(conn))) {
+ rds_stats_inc(s_recv_drop_no_sock);
+ rds_sock_put(rs);
+ rs = NULL;
+ goto out;
+ }
+
/* Process extension headers */
rds_recv_incoming_exthdrs(inc, rs);
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 217/675] gtp: parse extension headers before reading inner protocol
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (215 preceding siblings ...)
2026-07-30 14:09 ` [PATCH 6.18 216/675] rds: drop incoming messages that cross network namespace boundaries Greg Kroah-Hartman
@ 2026-07-30 14:09 ` Greg Kroah-Hartman
2026-07-30 14:09 ` [PATCH 6.18 218/675] rxrpc: fix io_thread race in rxrpc_wake_up_io_thread() Greg Kroah-Hartman
` (462 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:09 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Zhixing Chen, Paolo Abeni,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Zhixing Chen <running910@gmail.com>
[ Upstream commit 96e37e2f618e931aa97af95e707dcdfb1ec41264 ]
GTPv1-U packets may carry a chain of extension headers before the inner
IP packet. The receive path already parses and skips these extension
headers, but it currently reads the inner protocol before doing so.
As a result, the first extension header byte is interpreted as the inner
IP version. Packets with extension headers are then dropped before PDP
lookup.
Parse the extension header chain before calling gtp_inner_proto(), so the
inner protocol is read from the actual inner IP header.
Fixes: c75fc0b9e5be ("gtp: identify tunnel via GTP device + GTP version + TEID + family")
Signed-off-by: Zhixing Chen <running910@gmail.com>
Link: https://patch.msgid.link/20260708042244.120898-1-running910@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/gtp.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/drivers/net/gtp.c b/drivers/net/gtp.c
index 2f8626c3824d6b..937d913ce5c334 100644
--- a/drivers/net/gtp.c
+++ b/drivers/net/gtp.c
@@ -826,13 +826,17 @@ static int gtp1u_udp_encap_recv(struct gtp_dev *gtp, struct sk_buff *skb)
if (!pskb_may_pull(skb, hdrlen))
return -1;
+ gtp1 = (struct gtp1_header *)(skb->data + sizeof(struct udphdr));
+
+ if (gtp1->flags & GTP1_F_EXTHDR &&
+ gtp_parse_exthdrs(skb, &hdrlen) < 0)
+ return -1;
+
if (gtp_inner_proto(skb, hdrlen, &inner_proto) < 0) {
netdev_dbg(gtp->dev, "GTP packet does not encapsulate an IP packet\n");
return -1;
}
- gtp1 = (struct gtp1_header *)(skb->data + sizeof(struct udphdr));
-
pctx = gtp1_pdp_find(gtp, ntohl(gtp1->tid),
gtp_proto_to_family(inner_proto));
if (!pctx) {
@@ -840,10 +844,6 @@ static int gtp1u_udp_encap_recv(struct gtp_dev *gtp, struct sk_buff *skb)
return 1;
}
- if (gtp1->flags & GTP1_F_EXTHDR &&
- gtp_parse_exthdrs(skb, &hdrlen) < 0)
- return -1;
-
return gtp_rx(pctx, skb, hdrlen, gtp->role, inner_proto);
}
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 218/675] rxrpc: fix io_thread race in rxrpc_wake_up_io_thread()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (216 preceding siblings ...)
2026-07-30 14:09 ` [PATCH 6.18 217/675] gtp: parse extension headers before reading inner protocol Greg Kroah-Hartman
@ 2026-07-30 14:09 ` Greg Kroah-Hartman
2026-07-30 14:09 ` [PATCH 6.18 219/675] dpaa2-switch: put MAC endpoint device on disconnect Greg Kroah-Hartman
` (461 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:09 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Xuanqiang Luo, Simon Horman,
Paolo Abeni, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Xuanqiang Luo <luoxuanqiang@kylinos.cn>
[ Upstream commit 745fb794c3e933c023af9dbb5876a5e16ad2dc71 ]
rxrpc_wake_up_io_thread() checks local->io_thread before waking it, but
then reloads the pointer for wake_up_process().
local->io_thread is cleared with WRITE_ONCE() when the I/O thread exits, so
the second load can see NULL even if the first load did not.
Take a READ_ONCE() snapshot and use it for both the NULL check and the
wake_up_process() call, as rxrpc_encap_rcv() already does.
Fixes: 5800b1cf3fd8 ("rxrpc: Allow CHALLENGEs to the passed to the app for a RESPONSE")
Signed-off-by: Xuanqiang Luo <luoxuanqiang@kylinos.cn>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20260708093534.53486-1-xuanqiang.luo@linux.dev
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/rxrpc/ar-internal.h | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/net/rxrpc/ar-internal.h b/net/rxrpc/ar-internal.h
index d2b31d15851b96..38b0997ce0cb3a 100644
--- a/net/rxrpc/ar-internal.h
+++ b/net/rxrpc/ar-internal.h
@@ -1266,9 +1266,11 @@ int rxrpc_io_thread(void *data);
void rxrpc_post_response(struct rxrpc_connection *conn, struct sk_buff *skb);
static inline void rxrpc_wake_up_io_thread(struct rxrpc_local *local)
{
- if (!local->io_thread)
+ struct task_struct *io_thread = READ_ONCE(local->io_thread);
+
+ if (!io_thread)
return;
- wake_up_process(READ_ONCE(local->io_thread));
+ wake_up_process(io_thread);
}
static inline bool rxrpc_protocol_error(struct sk_buff *skb, enum rxrpc_abort_reason why)
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 219/675] dpaa2-switch: put MAC endpoint device on disconnect
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (217 preceding siblings ...)
2026-07-30 14:09 ` [PATCH 6.18 218/675] rxrpc: fix io_thread race in rxrpc_wake_up_io_thread() Greg Kroah-Hartman
@ 2026-07-30 14:09 ` Greg Kroah-Hartman
2026-07-30 14:09 ` [PATCH 6.18 220/675] net: airoha: Fix potential use-after-free in airoha_ppe_deinit() Greg Kroah-Hartman
` (460 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:09 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Guangshuo Li, Simon Horman,
Paolo Abeni, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Guangshuo Li <lgs201920130244@gmail.com>
[ Upstream commit 4c1eabbef7a1707635652e956e39db1269c3af2b ]
fsl_mc_get_endpoint() returns the MAC endpoint device with a reference
taken through device_find_child(). The switch port connect path stores
that device in mac->mc_dev and keeps it for the lifetime of the connected
MAC object.
However, the disconnect path only closes the MAC and frees the dpaa2_mac
object. It does not drop the endpoint device reference stored in
mac->mc_dev, so every successful connect leaks that device reference when
the MAC is later disconnected.
Drop the endpoint device reference before freeing the dpaa2_mac object.
Fixes: 84cba72956fd ("dpaa2-switch: integrate the MAC endpoint support")
Signed-off-by: Guangshuo Li <lgs201920130244@gmail.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20260708111025.749311-1-lgs201920130244@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c b/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c
index 789a46f6938eea..846300b77e8acc 100644
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c
@@ -1511,6 +1511,7 @@ static void dpaa2_switch_port_disconnect_mac(struct ethsw_port_priv *port_priv)
dpaa2_mac_disconnect(mac);
dpaa2_mac_close(mac);
+ put_device(&mac->mc_dev->dev);
kfree(mac);
}
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 220/675] net: airoha: Fix potential use-after-free in airoha_ppe_deinit()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (218 preceding siblings ...)
2026-07-30 14:09 ` [PATCH 6.18 219/675] dpaa2-switch: put MAC endpoint device on disconnect Greg Kroah-Hartman
@ 2026-07-30 14:09 ` Greg Kroah-Hartman
2026-07-30 14:09 ` [PATCH 6.18 221/675] dpaa2-eth: put MAC endpoint device on disconnect Greg Kroah-Hartman
` (459 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:09 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Wayen Yan, Lorenzo Bianconi,
Paolo Abeni, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Wayen Yan <win847@gmail.com>
[ Upstream commit 2484568a335cd7bda951c75b3a7d95ea36161ae7 ]
airoha_ppe_deinit() replaces the NPU pointer with NULL via
rcu_replace_pointer() but does not wait for existing RCU readers
to exit before calling ppe_deinit() and airoha_npu_put(). This can
cause a use-after-free if a reader in an RCU read-side critical
section still holds a reference to the NPU when it is freed.
The init path (airoha_ppe_init) already calls synchronize_rcu()
after rcu_assign_pointer(), but the deinit path introduced in
commit 6abcf751bc08 ("net: airoha: Fix schedule while atomic in
airoha_ppe_deinit()") omitted the matching barrier when switching
from rcu_read_lock()/rcu_dereference() to rcu_replace_pointer().
Add synchronize_rcu() before ppe_deinit() to ensure all existing
RCU readers have completed before the NPU resources are released.
Fixes: 6abcf751bc084804a9e5b3051442e8a2ce67f48a ("net: airoha: Fix schedule while atomic in airoha_ppe_deinit()")
Signed-off-by: Wayen Yan <win847@gmail.com>
Acked-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://patch.msgid.link/178351022574.97989.6880403520276841703@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/airoha/airoha_ppe.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/net/ethernet/airoha/airoha_ppe.c b/drivers/net/ethernet/airoha/airoha_ppe.c
index 798839aa1010b8..8defd194568f25 100644
--- a/drivers/net/ethernet/airoha/airoha_ppe.c
+++ b/drivers/net/ethernet/airoha/airoha_ppe.c
@@ -1575,6 +1575,7 @@ void airoha_ppe_deinit(struct airoha_eth *eth)
npu = rcu_replace_pointer(eth->npu, NULL,
lockdep_is_held(&flow_offload_mutex));
if (npu) {
+ synchronize_rcu();
npu->ops.ppe_deinit(npu);
airoha_npu_put(npu);
}
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 221/675] dpaa2-eth: put MAC endpoint device on disconnect
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (219 preceding siblings ...)
2026-07-30 14:09 ` [PATCH 6.18 220/675] net: airoha: Fix potential use-after-free in airoha_ppe_deinit() Greg Kroah-Hartman
@ 2026-07-30 14:09 ` Greg Kroah-Hartman
2026-07-30 14:09 ` [PATCH 6.18 222/675] net: airoha: Fix DMA direction for NPU mailbox buffer Greg Kroah-Hartman
` (458 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:09 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Guangshuo Li, Ioana Ciornei,
Paolo Abeni, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Guangshuo Li <lgs201920130244@gmail.com>
[ Upstream commit b4b201cc93ff70150853aba03e14d314d1980ca0 ]
fsl_mc_get_endpoint() returns the MAC endpoint device with a reference
taken through device_find_child(). The Ethernet connect path stores that
device in mac->mc_dev and keeps it for the lifetime of the connected MAC
object.
However, the disconnect path only disconnects and closes the MAC before
freeing the dpaa2_mac object. It does not drop the endpoint device
reference stored in mac->mc_dev, so every successful connect leaks that
device reference when the MAC is later disconnected.
Drop the endpoint device reference after closing the MAC and before
freeing the dpaa2_mac object.
Fixes: 719479230893 ("dpaa2-eth: add MAC/PHY support through phylink")
Signed-off-by: Guangshuo Li <lgs201920130244@gmail.com>
Reviewed-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Reviewed-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Link: https://patch.msgid.link/20260708111738.750391-1-lgs201920130244@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
index 18d86badd6ea73..6fd478572ef8ff 100644
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
@@ -4732,6 +4732,7 @@ static void dpaa2_eth_disconnect_mac(struct dpaa2_eth_priv *priv)
dpaa2_mac_disconnect(mac);
dpaa2_mac_close(mac);
+ put_device(&mac->mc_dev->dev);
kfree(mac);
}
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 222/675] net: airoha: Fix DMA direction for NPU mailbox buffer
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (220 preceding siblings ...)
2026-07-30 14:09 ` [PATCH 6.18 221/675] dpaa2-eth: put MAC endpoint device on disconnect Greg Kroah-Hartman
@ 2026-07-30 14:09 ` Greg Kroah-Hartman
2026-07-30 14:09 ` [PATCH 6.18 223/675] iommu/amd: Wait for completion instead of returning early in iommu_completion_wait() Greg Kroah-Hartman
` (457 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:09 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Wayen Yan, Lorenzo Bianconi,
Paolo Abeni, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Wayen Yan <win847@gmail.com>
[ Upstream commit 6f884eb87a79e0c482baef2ad96c96b81d024235 ]
airoha_npu_send_msg() always maps the mailbox buffer with DMA_TO_DEVICE,
but some callers expect the NPU to write response data back into the
same buffer:
- airoha_npu_wlan_msg_get() (NPU_OP_GET): NPU writes response into
the buffer, then the caller reads it via memcpy()
- airoha_npu_ppe_stats_setup() (NPU_OP_SET): NPU writes back
npu_stats_addr field in the response
On non-cache-coherent architectures like EN7581 (Cortex-A53 without
hardware cache coherency for NPU DMA), DMA_TO_DEVICE unmap is a no-op
— it does not invalidate the CPU cache. If the NPU-written cache line
is still present in the CPU cache when the caller reads the buffer,
the CPU observes stale data instead of the NPU response.
This is a timing-sensitive bug: small mailbox buffers (~24 bytes)
typically fit in a single cache line and may survive in the cache
until the caller reads them, producing silent data corruption rather
than a crash. The bug is more likely to trigger when the caller reads
the response immediately after dma_unmap_single() without intervening
cache-evicting operations.
Fix by using DMA_BIDIRECTIONAL for both map and unmap, which ensures
dma_unmap_single() invalidates the CPU cache on non-coherent systems.
The mailbox buffers are small so there is no performance concern.
Fixes: c52918744ee1e49cea86622a2633b9782446428f ("net: airoha: npu: Move memory allocation in airoha_npu_send_msg() caller")
Signed-off-by: Wayen Yan <win847@gmail.com>
Acked-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://patch.msgid.link/178351055214.98729.11403147818632027428@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/airoha/airoha_npu.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/airoha/airoha_npu.c b/drivers/net/ethernet/airoha/airoha_npu.c
index 8c883f2b2d36b7..d6547834d3c783 100644
--- a/drivers/net/ethernet/airoha/airoha_npu.c
+++ b/drivers/net/ethernet/airoha/airoha_npu.c
@@ -154,7 +154,7 @@ static int airoha_npu_send_msg(struct airoha_npu *npu, int func_id,
dma_addr_t dma_addr;
int ret;
- dma_addr = dma_map_single(npu->dev, p, size, DMA_TO_DEVICE);
+ dma_addr = dma_map_single(npu->dev, p, size, DMA_BIDIRECTIONAL);
ret = dma_mapping_error(npu->dev, dma_addr);
if (ret)
return ret;
@@ -177,7 +177,7 @@ static int airoha_npu_send_msg(struct airoha_npu *npu, int func_id,
spin_unlock_bh(&npu->cores[core].lock);
- dma_unmap_single(npu->dev, dma_addr, size, DMA_TO_DEVICE);
+ dma_unmap_single(npu->dev, dma_addr, size, DMA_BIDIRECTIONAL);
return ret;
}
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 223/675] iommu/amd: Wait for completion instead of returning early in iommu_completion_wait()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (221 preceding siblings ...)
2026-07-30 14:09 ` [PATCH 6.18 222/675] net: airoha: Fix DMA direction for NPU mailbox buffer Greg Kroah-Hartman
@ 2026-07-30 14:09 ` Greg Kroah-Hartman
2026-07-30 14:09 ` [PATCH 6.18 224/675] wifi: mac80211: tear down new links on vif update error path Greg Kroah-Hartman
` (456 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:09 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Guanghui Feng, Vasant Hegde,
Will Deacon, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Guanghui Feng <guanghuifeng@linux.alibaba.com>
[ Upstream commit 1e75a8255f11c81fb07e81e5029cfd75804350a0 ]
need_sync is a per-IOMMU flag shared by all domains and devices behind
that IOMMU. It is set whenever a command is queued with sync == true and
cleared when a completion-wait (CWAIT) command is queued. However, a
cleared need_sync only means that a covering CWAIT has been queued, not
that all previously queued commands have actually completed in hardware.
iommu_completion_wait() read need_sync locklessly and returned early
when it was false. This breaks the "block until all previously queued
commands have completed" contract in a multi-CPU scenario:
CPU2: queue inv-B => need_sync = true
CPU1: queue CWAIT(N); need_sync = false; then wait_on_sem(N)
CPU2: read need_sync == false => return 0 (no wait!)
CPU2 returns without waiting for any sequence number even though its
inv-B may not have completed yet (CWAIT(N), queued after inv-B, has not
been signaled). CPU2 then proceeds to, for example, free page-table
pages while the IOMMU can still walk stale translations, opening a
use-after-free window. This is a logical race in the meaning of the
flag, not a memory-visibility issue, so barriers alone do not help.
Fix it without losing the optimization of avoiding redundant CWAIT
commands: take iommu->lock before testing need_sync, and when it is
false do not return early but wait for the last allocated sequence
number (cmd_sem_val). Since need_sync == false implies no sync command
was queued after the last CWAIT, that CWAIT is FIFO-ordered after every
not-yet-completed command, so waiting for its sequence number guarantees
all prior commands (possibly queued by another CPU) have completed. The
common path with pending work is unchanged and no extra hardware command
is issued.
Signed-off-by: Guanghui Feng <guanghuifeng@linux.alibaba.com>
Fixes: 815b33fdc279 ("x86/amd-iommu: Cleanup completion-wait handling")
Reviewed-by: Vasant Hegde <vasant.hegde@amd.com>
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/iommu/amd/iommu.c | 22 ++++++++++++++++------
1 file changed, 16 insertions(+), 6 deletions(-)
diff --git a/drivers/iommu/amd/iommu.c b/drivers/iommu/amd/iommu.c
index c458eec8a5bba8..12302647e26759 100644
--- a/drivers/iommu/amd/iommu.c
+++ b/drivers/iommu/amd/iommu.c
@@ -1408,11 +1408,23 @@ static int iommu_completion_wait(struct amd_iommu *iommu)
int ret;
u64 data;
- if (!iommu->need_sync)
- return 0;
-
raw_spin_lock_irqsave(&iommu->lock, flags);
+ if (!iommu->need_sync) {
+ /*
+ * No command has been queued since the last completion-wait.
+ * A concurrent CPU may have already queued that CWAIT and
+ * cleared need_sync; need_sync == false only means a covering
+ * CWAIT is queued, not that all prior commands have completed.
+ * Wait for the last allocated sequence number so that any
+ * command queued before this call (possibly on another CPU)
+ * is guaranteed to have completed before returning.
+ */
+ data = iommu->cmd_sem_val;
+ raw_spin_unlock_irqrestore(&iommu->lock, flags);
+ return wait_on_sem(iommu, data);
+ }
+
data = get_cmdsem_val(iommu);
build_completion_wait(&cmd, iommu, data);
@@ -1422,9 +1434,7 @@ static int iommu_completion_wait(struct amd_iommu *iommu)
if (ret)
return ret;
- ret = wait_on_sem(iommu, data);
-
- return ret;
+ return wait_on_sem(iommu, data);
}
static void domain_flush_complete(struct protection_domain *domain)
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 224/675] wifi: mac80211: tear down new links on vif update error path
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (222 preceding siblings ...)
2026-07-30 14:09 ` [PATCH 6.18 223/675] iommu/amd: Wait for completion instead of returning early in iommu_completion_wait() Greg Kroah-Hartman
@ 2026-07-30 14:09 ` Greg Kroah-Hartman
2026-07-30 14:09 ` [PATCH 6.18 225/675] nfp: Check resource mutex allocation Greg Kroah-Hartman
` (455 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:09 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Weiming Shi, Xiang Mei,
Johannes Berg, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Xiang Mei <xmei5@asu.edu>
[ Upstream commit 952c02b33f56207a160421bcd61e7ac53c9c59ae ]
When ieee80211_vif_update_links() adds new links it allocates a link
container for each and calls ieee80211_link_init() (which registers the
per-link debugfs files with file->private_data pointing into the container)
and ieee80211_link_setup(). If the subsequent drv_change_vif_links() fails,
the error path restores the old pointers and jumps to 'free', which frees
the new containers but never removes their debugfs entries or stops the
links. The debugfs files survive with file->private_data dangling at the
freed container, so a later open()+read() (e.g. link-1/txpower)
dereferences freed memory in ieee80211_if_read_link(), a use-after-free.
The removal path already dismantles links correctly via
ieee80211_tear_down_links(), which removes each link's keys and debugfs
entries and calls ieee80211_link_stop(); the add path on the error branch
does not. Commit be1ba9ed221f ("wifi: mac80211: avoid weird state in error
path") hardened this same error path for the link-removal case
(new_links == 0) but left the newly-added links' teardown unaddressed.
drv_change_vif_links() can fail at runtime on MLO drivers (internal
allocation / queue / firmware command failures).
Remove the new links' debugfs entries and stop them before freeing.
BUG: KASAN: slab-use-after-free in ieee80211_if_read_link (net/mac80211/debugfs_netdev.c:127)
Read of size 8 at addr ffff888011290000 by task exploit/145
Call Trace:
...
ieee80211_if_read_link (net/mac80211/debugfs_netdev.c:127)
short_proxy_read (fs/debugfs/file.c:373)
vfs_read (fs/read_write.c:572)
ksys_read (fs/read_write.c:716)
do_syscall_64 (arch/x86/entry/syscall_64.c:94)
entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
...
Oops: general protection fault, probably for non-canonical address 0xdffffc000000000a
RIP: 0010:ieee80211_if_read_link (net/mac80211/debugfs_netdev.c:127)
Kernel panic - not syncing: Fatal exception
Fixes: 170cd6a66d9a ("wifi: mac80211: add netdev per-link debugfs data and driver hook")
Reported-by: Weiming Shi <bestswngs@gmail.com>
Assisted-by: Claude:claude-opus-4-8
Signed-off-by: Xiang Mei <xmei5@asu.edu>
Link: https://patch.msgid.link/20260711210302.2098404-1-xmei5@asu.edu
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/mac80211/link.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/net/mac80211/link.c b/net/mac80211/link.c
index 05b0472bda40ed..235e370c2b59eb 100644
--- a/net/mac80211/link.c
+++ b/net/mac80211/link.c
@@ -382,6 +382,10 @@ static int ieee80211_vif_update_links(struct ieee80211_sub_if_data *sdata,
memcpy(sdata->link, old_data, sizeof(old_data));
memcpy(sdata->vif.link_conf, old, sizeof(old));
ieee80211_set_vif_links_bitmaps(sdata, old_links, dormant_links);
+ for_each_set_bit(link_id, &add, IEEE80211_MLD_MAX_NUM_LINKS) {
+ ieee80211_link_debugfs_remove(&links[link_id]->data);
+ ieee80211_link_stop(&links[link_id]->data);
+ }
/* and free (only) the newly allocated links */
memset(to_free, 0, sizeof(links));
goto free;
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 225/675] nfp: Check resource mutex allocation
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (223 preceding siblings ...)
2026-07-30 14:09 ` [PATCH 6.18 224/675] wifi: mac80211: tear down new links on vif update error path Greg Kroah-Hartman
@ 2026-07-30 14:09 ` Greg Kroah-Hartman
2026-07-30 14:09 ` [PATCH 6.18 226/675] wan: wanxl: Only reset hardware after BAR mapping Greg Kroah-Hartman
` (454 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:09 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Ruoyu Wang, Simon Horman,
Paolo Abeni, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Ruoyu Wang <ruoyuw560@gmail.com>
[ Upstream commit a61b4db34a753bdf5c9e77a7f3d3dddd41dcfacc ]
nfp_cpp_resource_find() allocates a CPP mutex handle for the matching
resource-table entry and then reports success. nfp_resource_try_acquire()
immediately passes that handle to nfp_cpp_mutex_trylock().
However, nfp_cpp_mutex_alloc() returns NULL on failure. If that happens
for a matching table entry, the resource lookup still returns success and
the following trylock dereferences a NULL mutex pointer while opening the
resource.
nfp_resource_acquire() already treats failure to allocate the table mutex
as -ENOMEM. Do the same for the resource mutex and fail the lookup before
publishing the rest of the resource handle.
This issue was found by a static analysis checker and confirmed by
manual source review.
Fixes: f01a2161577d ("nfp: add support for resources")
Signed-off-by: Ruoyu Wang <ruoyuw560@gmail.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20260708143408.3168425-1-ruoyuw560@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/netronome/nfp/nfpcore/nfp_resource.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/net/ethernet/netronome/nfp/nfpcore/nfp_resource.c b/drivers/net/ethernet/netronome/nfp/nfpcore/nfp_resource.c
index 279ea0b5695577..55525f45e447b7 100644
--- a/drivers/net/ethernet/netronome/nfp/nfpcore/nfp_resource.c
+++ b/drivers/net/ethernet/netronome/nfp/nfpcore/nfp_resource.c
@@ -96,6 +96,9 @@ static int nfp_cpp_resource_find(struct nfp_cpp *cpp, struct nfp_resource *res)
res->mutex =
nfp_cpp_mutex_alloc(cpp,
NFP_RESOURCE_TBL_TARGET, addr, key);
+ if (!res->mutex)
+ return -ENOMEM;
+
res->cpp_id = NFP_CPP_ID(entry.region.cpp_target,
entry.region.cpp_action,
entry.region.cpp_token);
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 226/675] wan: wanxl: Only reset hardware after BAR mapping
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (224 preceding siblings ...)
2026-07-30 14:09 ` [PATCH 6.18 225/675] nfp: Check resource mutex allocation Greg Kroah-Hartman
@ 2026-07-30 14:09 ` Greg Kroah-Hartman
2026-07-30 14:09 ` [PATCH 6.18 227/675] vhost-net: fix TX stall when vhost owns virtio-net header Greg Kroah-Hartman
` (453 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:09 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Ruoyu Wang, Paolo Abeni, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Ruoyu Wang <ruoyuw560@gmail.com>
[ Upstream commit 91957b89da995607cb654b1f9a3c126ddbaee10f ]
wanxl_pci_init_one() stores the freshly allocated card in driver data
before the PLX BAR is mapped. Several early probe failures then unwind
through wanxl_pci_remove_one(), including failure to allocate the coherent
status area or to restore the DMA mask.
wanxl_pci_remove_one() unconditionally calls wanxl_reset(), and
wanxl_reset() dereferences card->plx. On those early failures card->plx
is still NULL, so the error path can dereference a NULL MMIO pointer.
Only issue the hardware reset once the BAR mapping exists. The remaining
cleanup in wanxl_pci_remove_one() already checks whether later resources
were allocated.
This issue was found by a static analysis checker and confirmed by
manual source review.
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Ruoyu Wang <ruoyuw560@gmail.com>
Link: https://patch.msgid.link/20260708143415.3169358-1-ruoyuw560@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/wan/wanxl.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/net/wan/wanxl.c b/drivers/net/wan/wanxl.c
index 5a9e262188efe1..c38dd741401e13 100644
--- a/drivers/net/wan/wanxl.c
+++ b/drivers/net/wan/wanxl.c
@@ -514,7 +514,8 @@ static void wanxl_pci_remove_one(struct pci_dev *pdev)
if (card->irq)
free_irq(card->irq, card);
- wanxl_reset(card);
+ if (card->plx)
+ wanxl_reset(card);
for (i = 0; i < RX_QUEUE_LENGTH; i++)
if (card->rx_skbs[i]) {
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 227/675] vhost-net: fix TX stall when vhost owns virtio-net header
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (225 preceding siblings ...)
2026-07-30 14:09 ` [PATCH 6.18 226/675] wan: wanxl: Only reset hardware after BAR mapping Greg Kroah-Hartman
@ 2026-07-30 14:09 ` Greg Kroah-Hartman
2026-07-30 14:09 ` [PATCH 6.18 228/675] wifi: mwifiex: bound uAP association event IEs to the event buffer Greg Kroah-Hartman
` (452 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:09 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Enrico Zanda, Michael S. Tsirkin,
Paolo Abeni, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Enrico Zanda <enrico.zanda@arm.com>
[ Upstream commit 3c0d10f233f19153f81fef685b5c6716776a5af3 ]
When vhost owns the virtio-net header, i.e. when
VHOST_NET_F_VIRTIO_NET_HDR is negotiated, sock_hlen is 0,
meaning that no header will be forwarded to the TAP device.
In the current vhost_net_build_xdp() implementation,
when sock_hlen == 0, the gso pointer can point at the start of the
Ethernet frame instead of a virtio-net header.
This results in a wrong interpretation of the destination MAC address
bytes as struct virtio_net_hdr fields.
This can, for some MAC addresses, trigger -EINVAL and return early
before the TX descriptor is completed, which can stall vhost-net TX.
Before 97b2409f28e0, the gso pointer was set to the zeroed padding area,
using it as a synthetic virtio-net header. Restore that behavior.
Fixes: 97b2409f28e0 ("vhost-net: reduce one userspace copy when building XDP buff")
Signed-off-by: Enrico Zanda <enrico.zanda@arm.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Link: https://patch.msgid.link/20260708152242.2268848-1-enrico.zanda@arm.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/vhost/net.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c
index b2b90732b1d595..89d5438ba7af97 100644
--- a/drivers/vhost/net.c
+++ b/drivers/vhost/net.c
@@ -724,10 +724,12 @@ static int vhost_net_build_xdp(struct vhost_net_virtqueue *nvq,
goto err;
}
- gso = buf + pad - sock_hlen;
-
- if (!sock_hlen)
+ if (!sock_hlen) {
memset(buf, 0, pad);
+ gso = buf;
+ } else {
+ gso = buf + pad - sock_hlen;
+ }
if ((gso->flags & VIRTIO_NET_HDR_F_NEEDS_CSUM) &&
vhost16_to_cpu(vq, gso->csum_start) +
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 228/675] wifi: mwifiex: bound uAP association event IEs to the event buffer
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (226 preceding siblings ...)
2026-07-30 14:09 ` [PATCH 6.18 227/675] vhost-net: fix TX stall when vhost owns virtio-net header Greg Kroah-Hartman
@ 2026-07-30 14:09 ` Greg Kroah-Hartman
2026-07-30 14:09 ` [PATCH 6.18 229/675] iommu/amd: Bound the early ACPI HID map Greg Kroah-Hartman
` (451 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:09 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, HE WEI , Francesco Dolcini,
Johannes Berg, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: HE WEI (ギカク) <skyexpoc@gmail.com>
[ Upstream commit f0858bfc7d3cab411a447b88e3ef970e575032c9 ]
mwifiex_process_uap_event() handles EVENT_UAP_STA_ASSOC by exposing the
(re)association request IEs that the firmware copies into the event:
sinfo->assoc_req_ies = &event->data[len];
len = (u8 *)sinfo->assoc_req_ies - (u8 *)&event->frame_control;
sinfo->assoc_req_ies_len = le16_to_cpu(event->len) - (u16)len;
event->len is supplied by the device firmware and is never validated,
and the subtraction is unchecked. assoc_req_ies points into
adapter->event_body[MAX_EVENT_SIZE], a fixed-size array embedded in the
kmalloc()'d struct mwifiex_adapter.
On the ap_11n_enabled path mwifiex_set_sta_ht_cap() walks these IEs with
cfg80211_find_ie(), whose for_each_element() loop dereferences each
element header. A firmware-reported event->len larger than the bytes
actually received makes assoc_req_ies_len describe IEs that extend past
event_body, so the walk reads out of the adapter slab object, a
slab-out-of-bounds read (KASAN: slab-out-of-bounds in cfg80211_find_ie).
An event->len smaller than the header instead makes the int subtraction
negative, which wraps to a huge size_t when stored in assoc_req_ies_len.
The same length is handed to cfg80211_new_sta(), so a more modest
over-claim can also copy stale event_body bytes into the
NL80211_CMD_NEW_STATION notification.
A malicious or malfunctioning mwifiex device (USB/SDIO/PCIe) can deliver
such an event while the interface is in AP/uAP mode.
Validate event->len before use: reject a length that underflows the
header or that would place the IEs outside the event_body[] buffer the
event was copied into. event->len here is struct mwifiex_assoc_event.len,
a payload field internal to this event, not the transport frame length,
so it is validated in this handler rather than at the generic
MWIFIEX_TYPE_EVENT receive path, which only sees the event cause and the
transport frame length. The bound is against event_body[MAX_EVENT_SIZE]
rather than the actually-received length because the transports store the
event differently (USB and SDIO leave the 4-byte event header in
event_skb, PCIe strips it via skb_pull), whereas event_body is the single
fixed buffer all of them copy the event into. This is the event-path
analogue of the receive-path bounds checks added in commit 119585281617
("wifi: mwifiex: Fix OOB and integer underflow when rx packets").
Fixes: e568634ae7ac ("mwifiex: add AP event handling framework")
Signed-off-by: HE WEI (ギカク) <skyexpoc@gmail.com>
Reviewed-by: Francesco Dolcini <francesco.dolcini@toradex.com>
Link: https://patch.msgid.link/20260715135711.34688-1-skyexpoc@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
.../net/wireless/marvell/mwifiex/uap_event.c | 24 +++++++++++++++++--
1 file changed, 22 insertions(+), 2 deletions(-)
diff --git a/drivers/net/wireless/marvell/mwifiex/uap_event.c b/drivers/net/wireless/marvell/mwifiex/uap_event.c
index 245cb99a3daad2..fc9da9006a782c 100644
--- a/drivers/net/wireless/marvell/mwifiex/uap_event.c
+++ b/drivers/net/wireless/marvell/mwifiex/uap_event.c
@@ -123,11 +123,31 @@ int mwifiex_process_uap_event(struct mwifiex_private *priv)
len = ETH_ALEN;
if (len != -1) {
+ u16 evt_len = le16_to_cpu(event->len);
+
sinfo->assoc_req_ies = &event->data[len];
len = (u8 *)sinfo->assoc_req_ies -
(u8 *)&event->frame_control;
- sinfo->assoc_req_ies_len =
- le16_to_cpu(event->len) - (u16)len;
+
+ /*
+ * event->len is reported by the device firmware
+ * and is not otherwise validated. Reject a
+ * length that underflows the header, or that
+ * would place the association request IEs
+ * outside the fixed-size event_body[] buffer the
+ * event was copied into; otherwise the IE walk
+ * in mwifiex_set_sta_ht_cap() reads past
+ * event_body and out of the adapter slab object.
+ */
+ if (evt_len < len ||
+ (u8 *)&event->frame_control + evt_len >
+ adapter->event_body + MAX_EVENT_SIZE) {
+ mwifiex_dbg(adapter, ERROR,
+ "invalid STA assoc event length\n");
+ kfree(sinfo);
+ return -1;
+ }
+ sinfo->assoc_req_ies_len = evt_len - (u16)len;
}
}
cfg80211_new_sta(priv->netdev, event->sta_addr, sinfo,
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 229/675] iommu/amd: Bound the early ACPI HID map
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (227 preceding siblings ...)
2026-07-30 14:09 ` [PATCH 6.18 228/675] wifi: mwifiex: bound uAP association event IEs to the event buffer Greg Kroah-Hartman
@ 2026-07-30 14:09 ` Greg Kroah-Hartman
2026-07-30 14:09 ` [PATCH 6.18 230/675] iommu/intel: Fix out-of-bounds memset in dmar_latency_disable() Greg Kroah-Hartman
` (450 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:09 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Pengpeng Hou, Ankit Soni,
Will Deacon, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Pengpeng Hou <pengpeng@iscas.ac.cn>
[ Upstream commit fb80117fddb5b477218dc99bb53911b72c3847f8 ]
The ivrs_acpihid command-line parser appends entries to a fixed
four-element early_acpihid_map array. Unlike the sibling IOAPIC and HPET
parsers, it does not reject a fifth entry before incrementing the map size.
Check the capacity at the common found label before parsing the HID and
UID or writing the entry.
Fixes: ca3bf5d47cec ("iommu/amd: Introduces ivrs_acpihid kernel parameter")
Signed-off-by: Pengpeng Hou <pengpeng@iscas.ac.cn>
Reviewed-by: Ankit Soni <Ankit.Soni@amd.com>
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/iommu/amd/init.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/iommu/amd/init.c b/drivers/iommu/amd/init.c
index 32175daa3dd8a1..69170146d44217 100644
--- a/drivers/iommu/amd/init.c
+++ b/drivers/iommu/amd/init.c
@@ -3860,6 +3860,12 @@ static int __init parse_ivrs_acpihid(char *str)
return 1;
found:
+ if (early_acpihid_map_size == EARLY_MAP_SIZE) {
+ pr_err("Early ACPI HID map overflow - ignoring ivrs_acpihid%s\n",
+ str);
+ return 1;
+ }
+
p = acpiid;
hid = strsep(&p, ":");
uid = p;
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 230/675] iommu/intel: Fix out-of-bounds memset in dmar_latency_disable()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (228 preceding siblings ...)
2026-07-30 14:09 ` [PATCH 6.18 229/675] iommu/amd: Bound the early ACPI HID map Greg Kroah-Hartman
@ 2026-07-30 14:09 ` Greg Kroah-Hartman
2026-07-30 14:09 ` [PATCH 6.18 231/675] wifi: mac80211: recalculate TIM when a station enters power save Greg Kroah-Hartman
` (449 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:09 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Li RongQing, Will Deacon,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Li RongQing <lirongqing@baidu.com>
[ Upstream commit 754f8efe45f87e3a9c6871b645b2f9d46d1b407b ]
dmar_latency_disable() intends to zero out only the single
latency_statistic entry for the given type, but the memset size was
computed as sizeof(*lstat) * DMAR_LATENCY_NUM, which clears the entire
array starting from &lstat[type].
When type > 0, this writes beyond the end of the allocated array,
corrupting adjacent memory.
Fix by using sizeof(*lstat) to clear only the target entry.
Fixes: 55ee5e67a59a ("iommu/vt-d: Add common code for dmar latency performance monitors")
Signed-off-by: Li RongQing <lirongqing@baidu.com>
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/iommu/intel/perf.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/iommu/intel/perf.c b/drivers/iommu/intel/perf.c
index dceeadc3ee7cdd..6afb55073e9f10 100644
--- a/drivers/iommu/intel/perf.c
+++ b/drivers/iommu/intel/perf.c
@@ -63,7 +63,7 @@ void dmar_latency_disable(struct intel_iommu *iommu, enum latency_type type)
return;
spin_lock_irqsave(&latency_lock, flags);
- memset(&lstat[type], 0, sizeof(*lstat) * DMAR_LATENCY_NUM);
+ memset(&lstat[type], 0, sizeof(*lstat));
spin_unlock_irqrestore(&latency_lock, flags);
}
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 231/675] wifi: mac80211: recalculate TIM when a station enters power save
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (229 preceding siblings ...)
2026-07-30 14:09 ` [PATCH 6.18 230/675] iommu/intel: Fix out-of-bounds memset in dmar_latency_disable() Greg Kroah-Hartman
@ 2026-07-30 14:09 ` Greg Kroah-Hartman
2026-07-30 14:09 ` [PATCH 6.18 232/675] pds_core: reject component parameter in legacy firmware update Greg Kroah-Hartman
` (448 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:09 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Andrew Pope, Johannes Berg,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Andrew Pope <andrew.pope@morsemicro.com>
[ Upstream commit a007a384c9eb17610f53a53e2f59944c31f1565a ]
When an AP buffers frames for a station on its per-station TXQs and the
station subsequently enters power save, sta_ps_start() records the
buffered TIDs in txq_buffered_tids but does not update the TIM. The
station's TIM bit is only ever set when a further frame is buffered
while the station is already asleep
(ieee80211_tx_h_unicast_ps_buf() -> sta_info_recalc_tim()).
If no further downlink frame arrives for that station the beacon
TIM never advertises the buffered traffic. A station relying on the
TIM then remains in doze indefinitely on top of a non-empty queue. Its
TXQs were removed from the scheduler's active list at PS entry, nothing
pages it, and the flow deadlocks until an unrelated event wakes the
station.
Recalculate the TIM at the end of sta_ps_start(), so traffic
already buffered at PS entry is advertised immediately.
sta_info_recalc_tim() already consults txq_buffered_tids, which is
updated above, and is safe in this context (it is already called
from equivalent paths such as the tx handlers and
ieee80211_handle_filtered_frame()).
Fixes: ba8c3d6f16a1 ("mac80211: add an intermediate software queue implementation")
Signed-off-by: Andrew Pope <andrew.pope@morsemicro.com>
Link: https://patch.msgid.link/20260717011751.79524-1-andrew.pope@morsemicro.com
[add wifi: subject prefix]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/mac80211/rx.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 0a986607e65922..13b7432d732f87 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -1612,6 +1612,8 @@ static void sta_ps_start(struct sta_info *sta)
else
clear_bit(tid, &sta->txq_buffered_tids);
}
+
+ sta_info_recalc_tim(sta);
}
static void sta_ps_end(struct sta_info *sta)
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 232/675] pds_core: reject component parameter in legacy firmware update
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (230 preceding siblings ...)
2026-07-30 14:09 ` [PATCH 6.18 231/675] wifi: mac80211: recalculate TIM when a station enters power save Greg Kroah-Hartman
@ 2026-07-30 14:09 ` Greg Kroah-Hartman
2026-07-30 14:09 ` [PATCH 6.18 233/675] arm64: Correct value returned by ESR_ELx_FSC_ADDRSZ_nL() Greg Kroah-Hartman
` (447 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:09 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Nikhil P. Rao, Simon Horman,
Paolo Abeni, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Nikhil P. Rao <nikhil.rao@amd.com>
[ Upstream commit 7be2552e601c247a328a5aba6fc06ac844b94a16 ]
The legacy firmware update path does not support per-component updates.
If a user specifies a component parameter with devlink flash, reject
the request with -EOPNOTSUPP rather than silently ignoring the component
parameter and flashing the entire firmware image.
Fixes: 49ce92fbee0b ("pds_core: add FW update feature to devlink")
Signed-off-by: Nikhil P. Rao <nikhil.rao@amd.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20260708163649.128620-1-nikhil.rao@amd.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/amd/pds_core/devlink.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/net/ethernet/amd/pds_core/devlink.c b/drivers/net/ethernet/amd/pds_core/devlink.c
index 621791a3c543be..e35572f099c884 100644
--- a/drivers/net/ethernet/amd/pds_core/devlink.c
+++ b/drivers/net/ethernet/amd/pds_core/devlink.c
@@ -89,6 +89,12 @@ int pdsc_dl_flash_update(struct devlink *dl,
{
struct pdsc *pdsc = devlink_priv(dl);
+ if (params->component) {
+ NL_SET_ERR_MSG_MOD(extack,
+ "Component update not supported by this device");
+ return -EOPNOTSUPP;
+ }
+
return pdsc_firmware_update(pdsc, params->fw, extack);
}
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 233/675] arm64: Correct value returned by ESR_ELx_FSC_ADDRSZ_nL()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (231 preceding siblings ...)
2026-07-30 14:09 ` [PATCH 6.18 232/675] pds_core: reject component parameter in legacy firmware update Greg Kroah-Hartman
@ 2026-07-30 14:09 ` Greg Kroah-Hartman
2026-07-30 14:09 ` [PATCH 6.18 234/675] amd-xgbe: fix MAC_AUTO_SW handling in CL37 AN Greg Kroah-Hartman
` (446 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:09 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Steven Price, Marc Zyngier,
Will Deacon, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Steven Price <steven.price@arm.com>
[ Upstream commit b877075d0baa22c225842c2f19e3ea0a9cbcbe39 ]
Address size fault, level -1 is encoded as 0b101001 or 0x29 according to
the Arm ARM. Correct the value to match the spec. This also matches the
offset of "level -1 address size fault" in the fault_info array in
fault.c.
Fixes: fb8a3eba9c81 ("KVM: arm64: Only read HPFAR_EL2 when value is architecturally valid")
Signed-off-by: Steven Price <steven.price@arm.com>
Reviewed-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
arch/arm64/include/asm/esr.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm64/include/asm/esr.h b/arch/arm64/include/asm/esr.h
index e1deed82446450..31058567eee465 100644
--- a/arch/arm64/include/asm/esr.h
+++ b/arch/arm64/include/asm/esr.h
@@ -130,7 +130,7 @@
* Annoyingly, the negative levels for Address size faults aren't laid out
* contiguously (or in the desired order)
*/
-#define ESR_ELx_FSC_ADDRSZ_nL(n) ((n) == -1 ? 0x25 : 0x2C)
+#define ESR_ELx_FSC_ADDRSZ_nL(n) ((n) == -1 ? 0x29 : 0x2C)
#define ESR_ELx_FSC_ADDRSZ_L(n) ((n) < 0 ? ESR_ELx_FSC_ADDRSZ_nL(n) : \
(ESR_ELx_FSC_ADDRSZ + (n)))
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 234/675] amd-xgbe: fix MAC_AUTO_SW handling in CL37 AN
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (232 preceding siblings ...)
2026-07-30 14:09 ` [PATCH 6.18 233/675] arm64: Correct value returned by ESR_ELx_FSC_ADDRSZ_nL() Greg Kroah-Hartman
@ 2026-07-30 14:09 ` Greg Kroah-Hartman
2026-07-30 14:09 ` [PATCH 6.18 235/675] soreuseport: Clear sk_reuseport_cb before failure in sk_clone() Greg Kroah-Hartman
` (445 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:09 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Patrick Oppenlander,
Prashanth Kumar KR, Jakub Kicinski, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Prashanth Kumar KR <PrashanthKumar.K.R@amd.com>
[ Upstream commit 4bf22afe53a1de4b44b04cf677fd5199089cbdff ]
MAC_AUTO_SW (VR_MII_DIG_CTRL1 bit 9) enables automatic XPCS speed
mode switching after CL37 auto-negotiation and is only meaningful in
SGMII MAC mode. The original code unconditionally set this bit on
every call to xgbe_an37_set(), including when called from
xgbe_an37_disable() with enable=false. This left MAC_AUTO_SW=1 after
AN was disabled, causing the XPCS to autonomously switch speed from
stale AN state during subsequent mode changes, breaking SGMII speed
negotiation on 1G copper SFP modules.
Patrick: This was breaking negotiation for all 1G SFP modules,
not just copper modules.
Fixes: 42fd432fe6d3 ("amd-xgbe: align CL37 AN sequence as per databook")
Reported-by: Patrick Oppenlander <patrick.oppenlander@gmail.com>
Link: https://lore.kernel.org/netdev/CAEg67GmFS0Q4oSZkz8zWdOzckSth9_vBPiOy6a7-d697C2w2Xg@mail.gmail.com
Signed-off-by: Prashanth Kumar KR <PrashanthKumar.K.R@amd.com>
Tested-by: Patrick Oppenlander <patrick.oppenlander@gmail.com>
Link: https://patch.msgid.link/20260709095006.3683940-1-prashanthkumar.k.r@amd.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/amd/xgbe/xgbe-mdio.c | 11 ++++++++---
1 file changed, 8 insertions(+), 3 deletions(-)
diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-mdio.c b/drivers/net/ethernet/amd/xgbe/xgbe-mdio.c
index 7675bb98f02956..c2d22fdb6c1829 100644
--- a/drivers/net/ethernet/amd/xgbe/xgbe-mdio.c
+++ b/drivers/net/ethernet/amd/xgbe/xgbe-mdio.c
@@ -267,9 +267,14 @@ static void xgbe_an37_set(struct xgbe_prv_data *pdata, bool enable,
XMDIO_WRITE(pdata, MDIO_MMD_VEND2, MDIO_CTRL1, reg);
- reg = XMDIO_READ(pdata, MDIO_MMD_VEND2, MDIO_PCS_DIG_CTRL);
- reg |= XGBE_VEND2_MAC_AUTO_SW;
- XMDIO_WRITE(pdata, MDIO_MMD_VEND2, MDIO_PCS_DIG_CTRL, reg);
+ if (pdata->an_mode == XGBE_AN_MODE_CL37_SGMII) {
+ reg = XMDIO_READ(pdata, MDIO_MMD_VEND2, MDIO_PCS_DIG_CTRL);
+ if (enable)
+ reg |= XGBE_VEND2_MAC_AUTO_SW;
+ else
+ reg &= ~XGBE_VEND2_MAC_AUTO_SW;
+ XMDIO_WRITE(pdata, MDIO_MMD_VEND2, MDIO_PCS_DIG_CTRL, reg);
+ }
}
static void xgbe_an37_restart(struct xgbe_prv_data *pdata)
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 235/675] soreuseport: Clear sk_reuseport_cb before failure in sk_clone().
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (233 preceding siblings ...)
2026-07-30 14:09 ` [PATCH 6.18 234/675] amd-xgbe: fix MAC_AUTO_SW handling in CL37 AN Greg Kroah-Hartman
@ 2026-07-30 14:09 ` Greg Kroah-Hartman
2026-07-30 14:09 ` [PATCH 6.18 236/675] net: Call net_enable_timestamp() " Greg Kroah-Hartman
` (444 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:09 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Sashiko, Kuniyuki Iwashima,
Willem de Bruijn, Jason Xing, Simon Horman, Jakub Kicinski,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Kuniyuki Iwashima <kuniyu@google.com>
[ Upstream commit 98da8ce87dd561f08fbe44f75865edc5d9b2ba5f ]
When sk_clone() fails, sk_destruct() is called for the new socket.
If the parent socket has sk->sk_reuseport_cb, the child will call
reuseport_detach_sock() for the reuseport group.
Let's clear sk->sk_reuseport_cb before any failure path in sk_clone().
Note that this was not a problem before the cited commit because
reuseport_detach_sock() did nothing if the socket was not found in
the reuseport array.
Fixes: 5dc4c4b7d4e8 ("bpf: Introduce BPF_MAP_TYPE_REUSEPORT_SOCKARRAY")
Reported-by: Sashiko <sashiko-bot@kernel.org>
Closes: https://lore.kernel.org/all/20260709032007.9E4D61F000E9@smtp.kernel.org/
Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Reviewed-by: Jason Xing <kerneljasonxing@gmail.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20260709183315.965751-2-kuniyu@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/core/sock.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/net/core/sock.c b/net/core/sock.c
index c52cec0bf942c0..9803926942c559 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -2525,6 +2525,8 @@ struct sock *sk_clone_lock(const struct sock *sk, const gfp_t priority)
cgroup_sk_clone(&newsk->sk_cgrp_data);
+ RCU_INIT_POINTER(newsk->sk_reuseport_cb, NULL);
+
rcu_read_lock();
filter = rcu_dereference(sk->sk_filter);
if (filter != NULL)
@@ -2547,8 +2549,6 @@ struct sock *sk_clone_lock(const struct sock *sk, const gfp_t priority)
goto free;
}
- RCU_INIT_POINTER(newsk->sk_reuseport_cb, NULL);
-
if (bpf_sk_storage_clone(sk, newsk))
goto free;
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 236/675] net: Call net_enable_timestamp() before failure in sk_clone().
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (234 preceding siblings ...)
2026-07-30 14:09 ` [PATCH 6.18 235/675] soreuseport: Clear sk_reuseport_cb before failure in sk_clone() Greg Kroah-Hartman
@ 2026-07-30 14:09 ` Greg Kroah-Hartman
2026-07-30 14:09 ` [PATCH 6.18 237/675] net: txgbe: fix FDIR filter leak on remove Greg Kroah-Hartman
` (443 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:09 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Sashiko, Kuniyuki Iwashima,
Willem de Bruijn, Jason Xing, Simon Horman, Jakub Kicinski,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Kuniyuki Iwashima <kuniyu@google.com>
[ Upstream commit d50557779257a00162411e3048d82971ff1f644c ]
When sk_clone() fails, sk_destruct() is called for the new socket.
If the parent socket has SK_FLAGS_TIMESTAMP in sk->sk_flags,
net_disable_timestamp() is called for the child socket even though
net_enable_timestamp() is not called for it.
Let's call net_enable_timestamp() before any failure path in
sk_clone().
Fixes: 704da560c0a0 ("tcp: update the netstamp_needed counter when cloning sockets")
Reported-by: Sashiko <sashiko-bot@kernel.org>
Closes: https://lore.kernel.org/all/20260709032007.9E4D61F000E9@smtp.kernel.org/
Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Reviewed-by: Jason Xing <kerneljasonxing@gmail.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20260709183315.965751-3-kuniyu@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/core/sock.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/net/core/sock.c b/net/core/sock.c
index 9803926942c559..5a658606c50e8a 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -2527,6 +2527,9 @@ struct sock *sk_clone_lock(const struct sock *sk, const gfp_t priority)
RCU_INIT_POINTER(newsk->sk_reuseport_cb, NULL);
+ if (sock_needs_netstamp(sk) && newsk->sk_flags & SK_FLAGS_TIMESTAMP)
+ net_enable_timestamp();
+
rcu_read_lock();
filter = rcu_dereference(sk->sk_filter);
if (filter != NULL)
@@ -2575,9 +2578,6 @@ struct sock *sk_clone_lock(const struct sock *sk, const gfp_t priority)
if (newsk->sk_prot->sockets_allocated)
sk_sockets_allocated_inc(newsk);
-
- if (sock_needs_netstamp(sk) && newsk->sk_flags & SK_FLAGS_TIMESTAMP)
- net_enable_timestamp();
out:
return newsk;
free:
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 237/675] net: txgbe: fix FDIR filter leak on remove
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (235 preceding siblings ...)
2026-07-30 14:09 ` [PATCH 6.18 236/675] net: Call net_enable_timestamp() " Greg Kroah-Hartman
@ 2026-07-30 14:09 ` Greg Kroah-Hartman
2026-07-30 14:09 ` [PATCH 6.18 238/675] sctp: fix auth_chunk_list capacity check in sctp_auth_ep_add_chunkid Greg Kroah-Hartman
` (442 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:09 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Chenguang Zhao, Jacob Keller,
Jakub Kicinski, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Chenguang Zhao <zhaochenguang@kylinos.cn>
[ Upstream commit ecaa37826340520664a4e5522f803ff48fc3f564 ]
Perfect FDIR filters can be added while the interface is down and are
kept on the software list for later restore. unregister_netdev() only
calls ndo_stop when the device is up, so txgbe_fdir_filter_exit() in
txgbe_close() is skipped in that case and the filters are leaked on
driver remove. Free the filter list from txgbe_remove() as well.
Fixes: 4bdb441105dc ("net: txgbe: support Flow Director perfect filters")
Signed-off-by: Chenguang Zhao <zhaochenguang@kylinos.cn>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Link: https://patch.msgid.link/20260713091911.1614795-1-chenguang.zhao@linux.dev
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/wangxun/txgbe/txgbe_main.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/net/ethernet/wangxun/txgbe/txgbe_main.c b/drivers/net/ethernet/wangxun/txgbe/txgbe_main.c
index 4d20b178af236b..76d2940a49fae6 100644
--- a/drivers/net/ethernet/wangxun/txgbe/txgbe_main.c
+++ b/drivers/net/ethernet/wangxun/txgbe/txgbe_main.c
@@ -956,6 +956,7 @@ static void txgbe_remove(struct pci_dev *pdev)
netdev = wx->netdev;
wx_disable_sriov(wx);
unregister_netdev(netdev);
+ txgbe_fdir_filter_exit(wx);
txgbe_remove_phy(txgbe);
wx_free_isb_resources(wx);
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 238/675] sctp: fix auth_chunk_list capacity check in sctp_auth_ep_add_chunkid
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (236 preceding siblings ...)
2026-07-30 14:09 ` [PATCH 6.18 237/675] net: txgbe: fix FDIR filter leak on remove Greg Kroah-Hartman
@ 2026-07-30 14:09 ` Greg Kroah-Hartman
2026-07-30 14:09 ` [PATCH 6.18 239/675] pds_core: fix deadlock between reset thread and remove Greg Kroah-Hartman
` (441 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:09 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, HanQuan, Xin Long, Jakub Kicinski,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: HanQuan <eilaimemedsnaimel@gmail.com>
[ Upstream commit ff04b26794a16a8a879eb4fd2c02c2d6b03850e9 ]
sctp_auth_ep_add_chunkid() uses SCTP_NUM_CHUNK_TYPES (20) as the
capacity limit for ep->auth_chunk_list, allowing it to hold up to
20 chunk entries (param_hdr.length up to 24). However, the copy
destination asoc->c.auth_chunks in struct sctp_cookie is only
SCTP_AUTH_MAX_CHUNKS (16) entries (20 bytes). When more than 16
chunks are added, sctp_association_init() memcpy overflows the
destination by up to 4 bytes.
Fix by using SCTP_AUTH_MAX_CHUNKS as the capacity limit, matching
the destination capacity.
Fixes: 1f485649f529 ("[SCTP]: Implement SCTP-AUTH internals")
Signed-off-by: HanQuan <eilaimemedsnaimel@gmail.com>
Acked-by: Xin Long <lucien.xin@gmail.com>
Link: https://patch.msgid.link/20260713032021.3491702-1-zhoujian.zja@antgroup.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/sctp/auth.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/sctp/auth.c b/net/sctp/auth.c
index 82aad477590e2e..fbbfa0c2795523 100644
--- a/net/sctp/auth.c
+++ b/net/sctp/auth.c
@@ -672,7 +672,7 @@ int sctp_auth_ep_add_chunkid(struct sctp_endpoint *ep, __u8 chunk_id)
/* Check if we can add this chunk to the array */
param_len = ntohs(p->param_hdr.length);
nchunks = param_len - sizeof(struct sctp_paramhdr);
- if (nchunks == SCTP_NUM_CHUNK_TYPES)
+ if (nchunks == SCTP_AUTH_MAX_CHUNKS)
return -EINVAL;
p->chunks[nchunks] = chunk_id;
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 239/675] pds_core: fix deadlock between reset thread and remove
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (237 preceding siblings ...)
2026-07-30 14:09 ` [PATCH 6.18 238/675] sctp: fix auth_chunk_list capacity check in sctp_auth_ep_add_chunkid Greg Kroah-Hartman
@ 2026-07-30 14:09 ` Greg Kroah-Hartman
2026-07-30 14:09 ` [PATCH 6.18 240/675] pds_core: fix use-after-free on workqueue during remove Greg Kroah-Hartman
` (440 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:09 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, sashiko-bot, Nikhil P. Rao,
Harshitha Ramamurthy, Jakub Kicinski, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Nikhil P. Rao <nikhil.rao@amd.com>
[ Upstream commit ab0eec0ff0a421737a37f510ceab5c6ea59cd05a ]
pci_reset_function() acquires device_lock before performing the reset.
pdsc_remove() is called by the PCI core with device_lock already held.
If pdsc_pci_reset_thread() is running when pdsc_remove() is called,
destroy_workqueue() will block waiting for the work to complete, while
the work is blocked waiting for device_lock - deadlock.
Use pci_try_reset_function() which uses pci_dev_trylock() internally.
This acquires both the device lock and the PCI config access lock
without blocking - if either lock is contended, it returns -EAGAIN
immediately. This avoids the deadlock while also ensuring proper
config space access serialization during the reset.
The pci_dev_get/put calls are also removed as they were unnecessary -
the driver-owned workqueue is destroyed in pdsc_remove(), guaranteeing
the work completes before remove returns. The PCI core holds its
reference to pci_dev throughout the entire unbind sequence.
Fixes: 81665adf25d2 ("pds_core: Fix pdsc_check_pci_health function to use work thread")
Reported-by: sashiko-bot <sashiko-bot@kernel.org>
Closes: https://patchwork.kernel.org/comment/27002369/
Signed-off-by: Nikhil P. Rao <nikhil.rao@amd.com>
Reviewed-by: Harshitha Ramamurthy <hramamurthy@google.com>
Link: https://patch.msgid.link/20260714180223.1642792-2-nikhil.rao@amd.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/amd/pds_core/core.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/net/ethernet/amd/pds_core/core.c b/drivers/net/ethernet/amd/pds_core/core.c
index 076dfe2910c770..1978287cf275fc 100644
--- a/drivers/net/ethernet/amd/pds_core/core.c
+++ b/drivers/net/ethernet/amd/pds_core/core.c
@@ -603,9 +603,10 @@ void pdsc_pci_reset_thread(struct work_struct *work)
struct pdsc *pdsc = container_of(work, struct pdsc, pci_reset_work);
struct pci_dev *pdev = pdsc->pdev;
- pci_dev_get(pdev);
- pci_reset_function(pdev);
- pci_dev_put(pdev);
+ /* Use try variant to avoid deadlock with pdsc_remove().
+ * If lock is contended, the watchdog timer will retry.
+ */
+ pci_try_reset_function(pdev);
}
static void pdsc_check_pci_health(struct pdsc *pdsc)
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 240/675] pds_core: fix use-after-free on workqueue during remove
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (238 preceding siblings ...)
2026-07-30 14:09 ` [PATCH 6.18 239/675] pds_core: fix deadlock between reset thread and remove Greg Kroah-Hartman
@ 2026-07-30 14:09 ` Greg Kroah-Hartman
2026-07-30 14:09 ` [PATCH 6.18 241/675] pds_core: yield the CPU while waiting for the adminq to drain Greg Kroah-Hartman
` (439 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:09 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, sashiko-bot, Nikhil P. Rao,
Jakub Kicinski, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Nikhil P. Rao <nikhil.rao@amd.com>
[ Upstream commit 0ad134881508c36b65c1a8864f8bec53adbd3327 ]
In pdsc_remove(), the workqueue is destroyed before pdsc_teardown()
is called. This ordering allows two paths to queue work on the
destroyed workqueue:
1. If pdsc_teardown() -> pdsc_devcmd_reset() times out, the error
path in pdsc_devcmd_locked() queues health_work.
2. A NotifyQ event can trigger the ISR and queue work before free_irq()
is called in pdsc_teardown().
Fix by moving destroy_workqueue() after pdsc_teardown() so the
workqueue outlives every queuer; destroy_workqueue() then flushes any
work still pending.
Draining the queued work also requires ordering the teardown so the
resources that work touches are freed last:
- In pdsc_qcq_free(), after freeing the interrupt, cancel_work_sync()
the queue's work and only then clear qcq->intx, so
pdsc_process_adminq()'s read of qcq->intx for interrupt-credit
return cannot race with the clear.
- Free adminqcq before notifyqcq: the shared adminq ISR is released
when adminqcq is freed, and the adminq work accesses notifyqcq, so
both must be stopped before notifyqcq is freed.
Fixes: 01ba61b55b20 ("pds_core: Add adminq processing and commands")
Reported-by: sashiko-bot <sashiko-bot@kernel.org>
Closes: https://patchwork.kernel.org/comment/27002369/
Signed-off-by: Nikhil P. Rao <nikhil.rao@amd.com>
Link: https://patch.msgid.link/20260714180223.1642792-3-nikhil.rao@amd.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/amd/pds_core/core.c | 14 ++++++++++----
drivers/net/ethernet/amd/pds_core/main.c | 5 +++--
2 files changed, 13 insertions(+), 6 deletions(-)
diff --git a/drivers/net/ethernet/amd/pds_core/core.c b/drivers/net/ethernet/amd/pds_core/core.c
index 1978287cf275fc..d64e30a204dfcb 100644
--- a/drivers/net/ethernet/amd/pds_core/core.c
+++ b/drivers/net/ethernet/amd/pds_core/core.c
@@ -110,7 +110,6 @@ static void pdsc_qcq_intr_free(struct pdsc *pdsc, struct pdsc_qcq *qcq)
return;
pdsc_intr_free(pdsc, qcq->intx);
- qcq->intx = PDS_CORE_INTR_INDEX_NOT_ASSIGNED;
}
static int pdsc_qcq_intr_alloc(struct pdsc *pdsc, struct pdsc_qcq *qcq)
@@ -145,6 +144,12 @@ void pdsc_qcq_free(struct pdsc *pdsc, struct pdsc_qcq *qcq)
pdsc_qcq_intr_free(pdsc, qcq);
+ /* Drain any work queued by ISR before it was freed above */
+ if (qcq->work.func)
+ cancel_work_sync(&qcq->work);
+
+ qcq->intx = PDS_CORE_INTR_INDEX_NOT_ASSIGNED;
+
if (qcq->q_base)
dma_free_coherent(dev, qcq->q_size,
qcq->q_base, qcq->q_base_pa);
@@ -304,8 +309,11 @@ int pdsc_qcq_alloc(struct pdsc *pdsc, unsigned int type, unsigned int index,
static void pdsc_core_uninit(struct pdsc *pdsc)
{
- pdsc_qcq_free(pdsc, &pdsc->notifyqcq);
+ /* Free adminqcq first: its work accesses notifyqcq, so we must
+ * disable its IRQ and drain its work before freeing notifyqcq.
+ */
pdsc_qcq_free(pdsc, &pdsc->adminqcq);
+ pdsc_qcq_free(pdsc, &pdsc->notifyqcq);
if (pdsc->kern_dbpage) {
iounmap(pdsc->kern_dbpage);
@@ -478,8 +486,6 @@ void pdsc_teardown(struct pdsc *pdsc, bool removing)
{
if (!pdsc->pdev->is_virtfn)
pdsc_devcmd_reset(pdsc);
- if (pdsc->adminqcq.work.func)
- cancel_work_sync(&pdsc->adminqcq.work);
pdsc_core_uninit(pdsc);
diff --git a/drivers/net/ethernet/amd/pds_core/main.c b/drivers/net/ethernet/amd/pds_core/main.c
index c7a2eff576325f..accf3a3fe94457 100644
--- a/drivers/net/ethernet/amd/pds_core/main.c
+++ b/drivers/net/ethernet/amd/pds_core/main.c
@@ -436,8 +436,6 @@ static void pdsc_remove(struct pci_dev *pdev)
pdsc_auxbus_dev_del(pdsc, pdsc, &pdsc->padev);
timer_shutdown_sync(&pdsc->wdtimer);
- if (pdsc->wq)
- destroy_workqueue(pdsc->wq);
mutex_lock(&pdsc->config_lock);
set_bit(PDSC_S_STOPPING_DRIVER, &pdsc->state);
@@ -445,6 +443,9 @@ static void pdsc_remove(struct pci_dev *pdev)
pdsc_stop(pdsc);
pdsc_teardown(pdsc, PDSC_TEARDOWN_REMOVING);
mutex_unlock(&pdsc->config_lock);
+
+ if (pdsc->wq)
+ destroy_workqueue(pdsc->wq);
mutex_destroy(&pdsc->config_lock);
mutex_destroy(&pdsc->devcmd_lock);
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 241/675] pds_core: yield the CPU while waiting for the adminq to drain
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (239 preceding siblings ...)
2026-07-30 14:09 ` [PATCH 6.18 240/675] pds_core: fix use-after-free on workqueue during remove Greg Kroah-Hartman
@ 2026-07-30 14:09 ` Greg Kroah-Hartman
2026-07-30 14:09 ` [PATCH 6.18 242/675] pds_core: order completion reads after the ownership check Greg Kroah-Hartman
` (438 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:09 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, sashiko-bot, Nikhil P. Rao,
Eric Joyner, Pavan Chebbi, Jakub Kicinski, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Nikhil P. Rao <nikhil.rao@amd.com>
[ Upstream commit a11f0b8a204296fe7db9eaec53441012222cb004 ]
pdsc_adminq_wait_and_dec_once_unused() busy-waits for adminq_refcnt to
drop to one:
while (!refcount_dec_if_one(&pdsc->adminq_refcnt))
cpu_relax();
The refcount is held by pdsc_adminq_post() for the duration of an
in-flight command, which can wait up to devcmd_timeout seconds
(PDS_CORE_DEVCMD_TIMEOUT is 5) for the hardware to complete. cpu_relax()
is not a reschedule point, so on a non-preemptible kernel this loop can
spin on the CPU for several seconds, starving other tasks on that core.
Add cond_resched() to the loop so the waiter yields to other runnable
tasks while it polls, keeping cpu_relax() as the busy-wait hint between
checks.
Fixes: 7e82a8745b95 ("pds_core: Prevent race issues involving the adminq")
Reported-by: sashiko-bot <sashiko-bot@kernel.org>
Closes: https://sashiko.dev/#/patchset/20260629200358.2626129-1-nikhil.rao%40amd.com?part=2
Signed-off-by: Nikhil P. Rao <nikhil.rao@amd.com>
Reviewed-by: Eric Joyner <eric.joyner@amd.com>
Reviewed-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Link: https://patch.msgid.link/20260714201456.1776153-1-nikhil.rao@amd.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/amd/pds_core/core.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/net/ethernet/amd/pds_core/core.c b/drivers/net/ethernet/amd/pds_core/core.c
index d64e30a204dfcb..d02e096a2c5fb3 100644
--- a/drivers/net/ethernet/amd/pds_core/core.c
+++ b/drivers/net/ethernet/amd/pds_core/core.c
@@ -536,6 +536,7 @@ static void pdsc_adminq_wait_and_dec_once_unused(struct pdsc *pdsc)
dev_dbg_ratelimited(pdsc->dev, "%s: adminq in use\n",
__func__);
cpu_relax();
+ cond_resched();
}
}
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 242/675] pds_core: order completion reads after the ownership check
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (240 preceding siblings ...)
2026-07-30 14:09 ` [PATCH 6.18 241/675] pds_core: yield the CPU while waiting for the adminq to drain Greg Kroah-Hartman
@ 2026-07-30 14:09 ` Greg Kroah-Hartman
2026-07-30 14:09 ` [PATCH 6.18 243/675] pds_core: fix auxiliary device add/del races Greg Kroah-Hartman
` (437 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:09 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, sashiko-bot, Nikhil P. Rao,
Eric Joyner, Jakub Kicinski, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Nikhil P. Rao <nikhil.rao@amd.com>
[ Upstream commit dd6b1cc748cd28147c113f9daa76393916ad9494 ]
pdsc_process_adminq() and pdsc_process_notifyq() decide a completion is
valid from its ownership field - the color bit for the adminq, the event
id for the notifyq - then read the rest of the descriptor, with no
barrier in between.
On a weakly ordered architecture the CPU may read the payload first. Add
dma_rmb() between the ownership read and the payload reads.
Fixes: 7e82a8745b95 ("pds_core: Prevent race issues involving the adminq")
Reported-by: sashiko-bot <sashiko-bot@kernel.org>
Closes: https://sashiko.dev/#/patchset/20260629200358.2626129-1-nikhil.rao%40amd.com?part=2
Signed-off-by: Nikhil P. Rao <nikhil.rao@amd.com>
Reviewed-by: Eric Joyner <eric.joyner@amd.com>
Link: https://patch.msgid.link/20260714204145.1782390-1-nikhil.rao@amd.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/amd/pds_core/adminq.c | 12 +++++++++++-
1 file changed, 11 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/amd/pds_core/adminq.c b/drivers/net/ethernet/amd/pds_core/adminq.c
index 097bb092bdb8cd..eadb4b604fbe3c 100644
--- a/drivers/net/ethernet/amd/pds_core/adminq.c
+++ b/drivers/net/ethernet/amd/pds_core/adminq.c
@@ -18,7 +18,13 @@ static int pdsc_process_notifyq(struct pdsc_qcq *qcq)
comp = cq_info->comp;
eid = le64_to_cpu(comp->event.eid);
while (eid > pdsc->last_eid) {
- u16 ecode = le16_to_cpu(comp->event.ecode);
+ u16 ecode;
+
+ /* Order the payload read after the event id, the field the
+ * driver uses to detect a new completion.
+ */
+ dma_rmb();
+ ecode = le16_to_cpu(comp->event.ecode);
switch (ecode) {
case PDS_EVENT_LINK_CHANGE:
@@ -101,6 +107,10 @@ void pdsc_process_adminq(struct pdsc_qcq *qcq)
spin_lock_irqsave(&pdsc->adminq_lock, irqflags);
comp = cq->info[cq->tail_idx].comp;
while (pdsc_color_match(comp->color, cq->done_color)) {
+ /* Order the payload reads after the color bit, the field the
+ * driver uses to detect a new completion.
+ */
+ dma_rmb();
q_info = &q->info[q->tail_idx];
q->tail_idx = (q->tail_idx + 1) & (q->num_descs - 1);
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 243/675] pds_core: fix auxiliary device add/del races
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (241 preceding siblings ...)
2026-07-30 14:09 ` [PATCH 6.18 242/675] pds_core: order completion reads after the ownership check Greg Kroah-Hartman
@ 2026-07-30 14:09 ` Greg Kroah-Hartman
2026-07-30 14:09 ` [PATCH 6.18 244/675] pds_core: check for workqueue allocation failure Greg Kroah-Hartman
` (436 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:09 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Nikhil P. Rao, Brett Creeley,
Pavan Chebbi, Jakub Kicinski, Sasha Levin, sashiko-bot
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Nikhil P. Rao <nikhil.rao@amd.com>
[ Upstream commit bfa33cd513c7ceb93c5a4c30e5662acd73c0a916 ]
Two paths add or delete the same slot (pf->vfs[vf_id].padev): a VF's
pdsc_reset_done() and the PF's devlink enable_vnet/disable_vnet handler.
They serialize on config_lock, but neither guards the slot under it
correctly.
add() registers and stores a new auxiliary device without first checking
the slot, so a second add of an already-populated slot leaks the first
device. del() makes that check outside config_lock, so two concurrent
dels can both pass it; the first clears the slot, and the second
dereferences a NULL pointer.
Check and update the slot under config_lock in both paths.
Fixes: b699bdc720c0 ("pds_core: specify auxiliary_device to be created")
Reported-by: sashiko-bot@kernel.org # Running on a local machine
Signed-off-by: Nikhil P. Rao <nikhil.rao@amd.com>
Reviewed-by: Brett Creeley <brett.creeley@amd.com>
Reviewed-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Link: https://patch.msgid.link/20260714210745.1785625-1-nikhil.rao@amd.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/amd/pds_core/auxbus.c | 17 ++++++++++++++---
1 file changed, 14 insertions(+), 3 deletions(-)
diff --git a/drivers/net/ethernet/amd/pds_core/auxbus.c b/drivers/net/ethernet/amd/pds_core/auxbus.c
index 92f359f2b44920..874812bafc1d39 100644
--- a/drivers/net/ethernet/amd/pds_core/auxbus.c
+++ b/drivers/net/ethernet/amd/pds_core/auxbus.c
@@ -177,17 +177,21 @@ void pdsc_auxbus_dev_del(struct pdsc *cf, struct pdsc *pf,
{
struct pds_auxiliary_dev *padev;
- if (!*pd_ptr)
- return;
-
mutex_lock(&pf->config_lock);
+ /* A concurrent del may have already torn this device down and
+ * cleared it.
+ */
padev = *pd_ptr;
+ if (!padev)
+ goto out_unlock;
+
pds_client_unregister(pf, padev->client_id);
auxiliary_device_delete(&padev->aux_dev);
auxiliary_device_uninit(&padev->aux_dev);
*pd_ptr = NULL;
+out_unlock:
mutex_unlock(&pf->config_lock);
}
@@ -210,6 +214,13 @@ int pdsc_auxbus_dev_add(struct pdsc *cf, struct pdsc *pf,
mutex_lock(&pf->config_lock);
+ /* Nothing to do if the aux device is already present. This also
+ * guards against a second add overwriting *pd_ptr and leaking the
+ * first, symmetric with the check in pdsc_auxbus_dev_del().
+ */
+ if (*pd_ptr)
+ goto out_unlock;
+
mask = BIT_ULL(PDSC_S_FW_DEAD) |
BIT_ULL(PDSC_S_STOPPING_DRIVER);
if (cf->state & mask) {
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 244/675] pds_core: check for workqueue allocation failure
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (242 preceding siblings ...)
2026-07-30 14:09 ` [PATCH 6.18 243/675] pds_core: fix auxiliary device add/del races Greg Kroah-Hartman
@ 2026-07-30 14:09 ` Greg Kroah-Hartman
2026-07-30 14:09 ` [PATCH 6.18 245/675] sctp: validate stream count in sctp_process_strreset_inreq() Greg Kroah-Hartman
` (435 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:09 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, sashiko-bot, Nikhil P. Rao,
Brett Creeley, Pavan Chebbi, Jakub Kicinski, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Nikhil P. Rao <nikhil.rao@amd.com>
[ Upstream commit 3a660ca49e2c3807bffe0519db3cff677a5906e0 ]
pdsc_init_pf() does not check whether create_singlethread_workqueue()
succeeded.
Fail probe on failure. The workqueue is set up before the timer and
mutexes, so its failure path must unwind only the earlier setup.
Fixes: c2dbb0904310 ("pds_core: health timer and workqueue")
Reported-by: sashiko-bot <sashiko-bot@kernel.org>
Closes: https://sashiko.dev/#/patchset/20260629200358.2626129-1-nikhil.rao%40amd.com?part=2
Signed-off-by: Nikhil P. Rao <nikhil.rao@amd.com>
Reviewed-by: Brett Creeley <brett.creeley@amd.com>
Reviewed-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Link: https://patch.msgid.link/20260714212713.1788438-1-nikhil.rao@amd.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/amd/pds_core/main.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/amd/pds_core/main.c b/drivers/net/ethernet/amd/pds_core/main.c
index accf3a3fe94457..a4962dba3140b8 100644
--- a/drivers/net/ethernet/amd/pds_core/main.c
+++ b/drivers/net/ethernet/amd/pds_core/main.c
@@ -239,6 +239,10 @@ static int pdsc_init_pf(struct pdsc *pdsc)
/* General workqueue and timer, but don't start timer yet */
snprintf(wq_name, sizeof(wq_name), "%s.%d", PDS_CORE_DRV_NAME, pdsc->uid);
pdsc->wq = create_singlethread_workqueue(wq_name);
+ if (!pdsc->wq) {
+ err = -ENOMEM;
+ goto err_out_unmap_bars;
+ }
INIT_WORK(&pdsc->health_work, pdsc_health_thread);
INIT_WORK(&pdsc->pci_reset_work, pdsc_pci_reset_thread);
timer_setup(&pdsc->wdtimer, pdsc_wdtimer_cb, 0);
@@ -254,7 +258,7 @@ static int pdsc_init_pf(struct pdsc *pdsc)
err = pdsc_setup(pdsc, PDSC_SETUP_INIT);
if (err) {
mutex_unlock(&pdsc->config_lock);
- goto err_out_unmap_bars;
+ goto err_out_shutdown_timer;
}
err = pdsc_start(pdsc);
@@ -306,13 +310,14 @@ static int pdsc_init_pf(struct pdsc *pdsc)
pdsc_stop(pdsc);
err_out_teardown:
pdsc_teardown(pdsc, PDSC_TEARDOWN_REMOVING);
-err_out_unmap_bars:
+err_out_shutdown_timer:
timer_shutdown_sync(&pdsc->wdtimer);
if (pdsc->wq)
destroy_workqueue(pdsc->wq);
mutex_destroy(&pdsc->config_lock);
mutex_destroy(&pdsc->devcmd_lock);
pci_free_irq_vectors(pdsc->pdev);
+err_out_unmap_bars:
pdsc_unmap_bars(pdsc);
err_out_release_regions:
pci_release_regions(pdsc->pdev);
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 245/675] sctp: validate stream count in sctp_process_strreset_inreq()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (243 preceding siblings ...)
2026-07-30 14:09 ` [PATCH 6.18 244/675] pds_core: check for workqueue allocation failure Greg Kroah-Hartman
@ 2026-07-30 14:09 ` Greg Kroah-Hartman
2026-07-30 14:09 ` [PATCH 6.18 246/675] net: mctp i3c: clean up notifier and buses if driver register fails Greg Kroah-Hartman
` (434 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:09 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, AutonomousCodeSecurity, Xin Long,
Cen Zhang (Microsoft), Jakub Kicinski, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Cen Zhang (Microsoft) <blbllhy@gmail.com>
[ Upstream commit 18ae07691d43183d270de8be9dc8e027906015d9 ]
When processing a RESET_IN_REQUEST from a peer,
sctp_process_strreset_inreq() derives the stream count from the
parameter length but does not check whether the resulting
RESET_OUT_REQUEST would exceed SCTP_MAX_CHUNK_LEN.
The OUT request header (sctp_strreset_outreq, 16 bytes) is 8 bytes
larger than the IN request header (sctp_strreset_inreq, 8 bytes).
Generally, the IP payload is bounded to 65535 bytes, so the stream
list cannot be large enough to trigger the overflow. However, on
interfaces with MTU > 65535 (e.g., loopback with IPv6 jumbograms), a
stream list that fits within the incoming IN parameter can cause a
__u16 overflow in sctp_make_strreset_req() when computing the OUT
request size, leading to an undersized skb allocation and a kernel
BUG:
net/core/skbuff.c:207 skb_panic
net/core/skbuff.c:2625 skb_put
net/sctp/sm_make_chunk.c:1535 sctp_addto_chunk
net/sctp/sm_make_chunk.c:3695 sctp_make_strreset_req
net/sctp/stream.c:655 sctp_process_strreset_inreq
The local setsockopt path validates the generated reset request size.
However, for an incoming-only reset, it accounts for the smaller IN
request even though the peer must generate an OUT request with the same
stream list. Such a request cannot be completed successfully by the
peer.
Reject peer IN requests whose corresponding OUT request would exceed
SCTP_MAX_CHUNK_LEN. Also tighten the local check so it does not send an
IN request that would require an oversized OUT request from the peer.
Fixes: 7f9d68ac944e ("sctp: implement sender-side procedures for SSN Reset Request Parameter")
Reported-by: AutonomousCodeSecurity@microsoft.com
Closes: https://lore.kernel.org/all/20260707203215.2752-1-blbllhy@gmail.com/
Suggested-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: Cen Zhang (Microsoft) <blbllhy@gmail.com>
Acked-by: Xin Long <lucien.xin@gmail.com>
Link: https://patch.msgid.link/20260710010718.20318-1-blbllhy@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/sctp/stream.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/net/sctp/stream.c b/net/sctp/stream.c
index 39b8f5e8ce3534..9addcfad467f97 100644
--- a/net/sctp/stream.c
+++ b/net/sctp/stream.c
@@ -308,7 +308,8 @@ int sctp_send_reset_streams(struct sctp_association *asoc,
goto out;
param_len += str_nums * sizeof(__u16) +
- sizeof(struct sctp_strreset_inreq);
+ (out ? sizeof(struct sctp_strreset_inreq)
+ : sizeof(struct sctp_strreset_outreq));
}
if (param_len > SCTP_MAX_CHUNK_LEN -
@@ -639,6 +640,9 @@ struct sctp_chunk *sctp_process_strreset_inreq(
nums = (ntohs(param.p->length) - sizeof(*inreq)) / sizeof(__u16);
str_p = inreq->list_of_streams;
+ if (nums * sizeof(__u16) + sizeof(struct sctp_strreset_outreq) >
+ SCTP_MAX_CHUNK_LEN - sizeof(struct sctp_reconf_chunk))
+ goto out;
for (i = 0; i < nums; i++) {
if (ntohs(str_p[i]) >= stream->outcnt) {
result = SCTP_STRRESET_ERR_WRONG_SSN;
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 246/675] net: mctp i3c: clean up notifier and buses if driver register fails
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (244 preceding siblings ...)
2026-07-30 14:09 ` [PATCH 6.18 245/675] sctp: validate stream count in sctp_process_strreset_inreq() Greg Kroah-Hartman
@ 2026-07-30 14:09 ` Greg Kroah-Hartman
2026-07-30 14:09 ` [PATCH 6.18 247/675] tls: device: push pending open record on splice EOF Greg Kroah-Hartman
` (433 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:09 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Ijae Kim, Myeonghun Pak, Jeremy Kerr,
Jakub Kicinski, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Myeonghun Pak <mhun512@gmail.com>
[ Upstream commit 03d1057305ef17ac3f5936ac1580bc9a1a826e14 ]
mctp_i3c_mod_init() registers the I3C bus notifier and then walks the
existing buses with i3c_for_each_bus_locked(mctp_i3c_bus_add_new, NULL)
before registering the I3C device driver. If i3c_driver_register()
fails, the function returns the error directly, leaving the notifier
registered and every mctp_i3c_bus object created for the existing buses
allocated. The notifier is left pointing into the module that failed to
load and the bus list is leaked.
Mirror the module exit path on this failure: unregister the notifier and
tear down the buses that were added before returning the error.
This issue was identified during our ongoing static-analysis research while
reviewing kernel code.
Fixes: c8755b29b58e ("mctp i3c: MCTP I3C driver")
Co-developed-by: Ijae Kim <ae878000@gmail.com>
Signed-off-by: Ijae Kim <ae878000@gmail.com>
Signed-off-by: Myeonghun Pak <mhun512@gmail.com>
Acked-by: Jeremy Kerr <jk@codeconstruct.com.au>
Link: https://patch.msgid.link/20260715072517.13216-1-mhun512@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/mctp/mctp-i3c.c | 11 +++++++----
1 file changed, 7 insertions(+), 4 deletions(-)
diff --git a/drivers/net/mctp/mctp-i3c.c b/drivers/net/mctp/mctp-i3c.c
index c678f79aa35611..c5d0bc517fea99 100644
--- a/drivers/net/mctp/mctp-i3c.c
+++ b/drivers/net/mctp/mctp-i3c.c
@@ -731,18 +731,21 @@ static __init int mctp_i3c_mod_init(void)
int rc;
rc = i3c_register_notifier(&mctp_i3c_notifier);
- if (rc < 0) {
- i3c_driver_unregister(&mctp_i3c_driver);
+ if (rc < 0)
return rc;
- }
i3c_for_each_bus_locked(mctp_i3c_bus_add_new, NULL);
rc = i3c_driver_register(&mctp_i3c_driver);
if (rc < 0)
- return rc;
+ goto err_unregister_notifier;
return 0;
+
+err_unregister_notifier:
+ i3c_unregister_notifier(&mctp_i3c_notifier);
+ mctp_i3c_bus_remove_all();
+ return rc;
}
static __exit void mctp_i3c_mod_exit(void)
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 247/675] tls: device: push pending open record on splice EOF
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (245 preceding siblings ...)
2026-07-30 14:09 ` [PATCH 6.18 246/675] net: mctp i3c: clean up notifier and buses if driver register fails Greg Kroah-Hartman
@ 2026-07-30 14:09 ` Greg Kroah-Hartman
2026-07-30 14:09 ` [PATCH 6.18 248/675] selftests: af_unix: add USER_NS config Greg Kroah-Hartman
` (432 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:09 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Nils Juenemann, Rishikesh Jethwani,
Jakub Kicinski, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Rishikesh Jethwani <rjethwani@purestorage.com>
[ Upstream commit eaa39f9f8ac8c1d032cd26b9cd572804e9d7683f ]
On kTLS device-offload sockets, sendfile() with count > EOF can reach
->splice_eof() with a fully assembled but still-open TLS record left
pending. tls_device_splice_eof() only flushes partially sent records,
so an abrupt close() can drop the final record and the peer receives
a short file.
Fix tls_device_splice_eof() to also push pending open records.
This matches the software path, where splice EOF already flushes
pending open records.
Fixes: d4c1e80b0d1b ("tls/device: Use splice_eof() to flush")
Link: https://lore.kernel.org/netdev/CAMPsyauZ+jzG9AysO0FWv6ZY0kvCUpjX_U7o=oOjCuOQ87BCgg@mail.gmail.com/
Reported-by: Nils Juenemann <nils.juenemann@gmail.com>
Signed-off-by: Rishikesh Jethwani <rjethwani@purestorage.com>
Tested-by: Nils Juenemann <nils.juenemann@gmail.com>
Link: https://patch.msgid.link/20260709224436.1608993-2-rjethwani@purestorage.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/tls/tls_device.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/net/tls/tls_device.c b/net/tls/tls_device.c
index 71734411ff4c3a..d2e3870590c894 100644
--- a/net/tls/tls_device.c
+++ b/net/tls/tls_device.c
@@ -594,13 +594,15 @@ void tls_device_splice_eof(struct socket *sock)
struct tls_context *tls_ctx = tls_get_ctx(sk);
struct iov_iter iter = {};
- if (!tls_is_partially_sent_record(tls_ctx))
+ if (!tls_is_partially_sent_record(tls_ctx) &&
+ !tls_is_pending_open_record(tls_ctx))
return;
mutex_lock(&tls_ctx->tx_lock);
lock_sock(sk);
- if (tls_is_partially_sent_record(tls_ctx)) {
+ if (tls_is_partially_sent_record(tls_ctx) ||
+ tls_is_pending_open_record(tls_ctx)) {
iov_iter_bvec(&iter, ITER_SOURCE, NULL, 0, 0);
tls_push_data(sk, &iter, 0, 0, TLS_RECORD_TYPE_DATA);
}
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 248/675] selftests: af_unix: add USER_NS config
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (246 preceding siblings ...)
2026-07-30 14:09 ` [PATCH 6.18 247/675] tls: device: push pending open record on splice EOF Greg Kroah-Hartman
@ 2026-07-30 14:09 ` Greg Kroah-Hartman
2026-07-30 14:09 ` [PATCH 6.18 249/675] selftests: openvswitch: add config file Greg Kroah-Hartman
` (431 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:09 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Matthieu Baerts (NGI0),
Kuniyuki Iwashima, Jakub Kicinski, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Matthieu Baerts (NGI0) <matttbe@kernel.org>
[ Upstream commit f8b1abed736111f914b2c567d9a3db1f71e788e8 ]
This is required to use unshare(CLONE_NEWUSER).
This has not been seen on NIPA before, because the 'af_unix' tests are
executed with the 'net' ones, merging their config files. USER_NS is
present in tools/testing/selftests/net/config.
This issue is visible when only the af_unix config is used on top of the
default one. This is the recommended way to execute selftest targets.
Fixes: ac011361bd4f ("af_unix: Add test for sock_diag and UDIAG_SHOW_UID.")
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Reviewed-by: Kuniyuki Iwashima <kuniyu@google.com>
Link: https://patch.msgid.link/20260710-net-sft-fix-containers-v1-1-a2915c294ef5@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
tools/testing/selftests/net/af_unix/config | 1 +
1 file changed, 1 insertion(+)
diff --git a/tools/testing/selftests/net/af_unix/config b/tools/testing/selftests/net/af_unix/config
index b5429c15a53c75..41dbb03c747eb7 100644
--- a/tools/testing/selftests/net/af_unix/config
+++ b/tools/testing/selftests/net/af_unix/config
@@ -1,3 +1,4 @@
CONFIG_AF_UNIX_OOB=y
CONFIG_UNIX=y
CONFIG_UNIX_DIAG=m
+CONFIG_USER_NS=y
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 249/675] selftests: openvswitch: add config file
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (247 preceding siblings ...)
2026-07-30 14:09 ` [PATCH 6.18 248/675] selftests: af_unix: add USER_NS config Greg Kroah-Hartman
@ 2026-07-30 14:09 ` Greg Kroah-Hartman
2026-07-30 14:09 ` [PATCH 6.18 250/675] selftests: ovpn: add IPV6 and VETH configs Greg Kroah-Hartman
` (430 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:09 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Matthieu Baerts (NGI0),
Eelco Chaudron, Jakub Kicinski, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Matthieu Baerts (NGI0) <matttbe@kernel.org>
[ Upstream commit 441a820ccef9af80a9ac5a4c85b9c396e595967c ]
The kselftests doc mentions that a config file should be present "if a
test needs specific kernel config options enabled". This selftest
requires some kernel config, but no config file was provided.
We could say that a sub-target could use the parent's config file, but
the kselftests doc doesn't mention anything about that. Plus the
net/openvswitch target is the only net target without a config file.
Here is a new config file, which is a trimmed version of the net one,
with hopefully the minimal required kconfig on top of 'make defconfig'.
The Fixes tag points to the introduction of the net/openvswitch target,
just to help validating this target on stable kernels.
Fixes: 25f16c873fb1 ("selftests: add openvswitch selftest suite")
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Reviewed-by: Eelco Chaudron <echaudro@redhat.com>
Link: https://patch.msgid.link/20260710-net-sft-fix-containers-v1-2-a2915c294ef5@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
tools/testing/selftests/net/openvswitch/config | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
create mode 100644 tools/testing/selftests/net/openvswitch/config
diff --git a/tools/testing/selftests/net/openvswitch/config b/tools/testing/selftests/net/openvswitch/config
new file mode 100644
index 00000000000000..c659749cd086c7
--- /dev/null
+++ b/tools/testing/selftests/net/openvswitch/config
@@ -0,0 +1,16 @@
+CONFIG_GENEVE=m
+CONFIG_INET_DIAG=y
+CONFIG_IPV6=y
+CONFIG_NETFILTER=y
+CONFIG_NET_IPGRE=m
+CONFIG_NET_IPGRE_DEMUX=m
+CONFIG_NF_CONNTRACK=m
+CONFIG_NF_CONNTRACK_OVS=y
+CONFIG_OPENVSWITCH=m
+CONFIG_OPENVSWITCH_GENEVE=m
+CONFIG_OPENVSWITCH_GRE=m
+CONFIG_OPENVSWITCH_VXLAN=m
+CONFIG_PSAMPLE=m
+CONFIG_VETH=y
+CONFIG_VLAN_8021Q=y
+CONFIG_VXLAN=m
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 250/675] selftests: ovpn: add IPV6 and VETH configs
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (248 preceding siblings ...)
2026-07-30 14:09 ` [PATCH 6.18 249/675] selftests: openvswitch: add config file Greg Kroah-Hartman
@ 2026-07-30 14:09 ` Greg Kroah-Hartman
2026-07-30 14:09 ` [PATCH 6.18 251/675] selftests: ovpn: increase timeout Greg Kroah-Hartman
` (429 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:09 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Matthieu Baerts (NGI0),
Antonio Quartulli, Jakub Kicinski, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Matthieu Baerts (NGI0) <matttbe@kernel.org>
[ Upstream commit 90c792681a3732caaf7bf5bc435877736baf591a ]
They are required to run the selftests:
- Tests are executed in v4 and v6.
- Virtual Ethernet are used between the different netns.
This has not been seen on NIPA before, because the 'ovpn' tests are
executed with the 'tcp_ao' ones, merging their config files. These two
kernel config are present in tools/testing/selftests/net/tcp_ao/config.
This issue is visible when only the ovpn config is used on top of the
default one. This is the recommended way to execute selftest targets.
Fixes: 959bc330a439 ("testing/selftests: add test tool and scripts for ovpn module")
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Acked-by: Antonio Quartulli <antonio@openvpn.net>
Link: https://patch.msgid.link/20260710-net-sft-fix-containers-v1-3-a2915c294ef5@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
tools/testing/selftests/net/ovpn/config | 2 ++
1 file changed, 2 insertions(+)
diff --git a/tools/testing/selftests/net/ovpn/config b/tools/testing/selftests/net/ovpn/config
index 42699740936dba..c0a21a43018a22 100644
--- a/tools/testing/selftests/net/ovpn/config
+++ b/tools/testing/selftests/net/ovpn/config
@@ -4,7 +4,9 @@ CONFIG_CRYPTO_CHACHA20POLY1305=y
CONFIG_CRYPTO_GCM=y
CONFIG_DST_CACHE=y
CONFIG_INET=y
+CONFIG_IPV6=y
CONFIG_NET=y
CONFIG_NET_UDP_TUNNEL=y
CONFIG_OVPN=m
CONFIG_STREAM_PARSER=y
+CONFIG_VETH=y
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 251/675] selftests: ovpn: increase timeout
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (249 preceding siblings ...)
2026-07-30 14:09 ` [PATCH 6.18 250/675] selftests: ovpn: add IPV6 and VETH configs Greg Kroah-Hartman
@ 2026-07-30 14:09 ` Greg Kroah-Hartman
2026-07-30 14:09 ` [PATCH 6.18 252/675] selftests: drv-net: " Greg Kroah-Hartman
` (428 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:09 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Matthieu Baerts (NGI0),
Antonio Quartulli, Jakub Kicinski, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Matthieu Baerts (NGI0) <matttbe@kernel.org>
[ Upstream commit 61ac7049aaa86ae044e8a5b94d852218163d5bf8 ]
The default timeout is 45 seconds, that's too low for a few ovpn tests.
Indeed, these tests can take up to 50 seconds with some debug kernel
config on NIPA. Set a timeout to 90 seconds, just to be on the safe
side.
Note that the Fixes tag here points to the introduction of the ovpn
tests because I don't know when they started to take more than 45
seconds. That's OK because a timeout of 1.5 minutes is not exaggerated.
Fixes: 959bc330a439 ("testing/selftests: add test tool and scripts for ovpn module")
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Acked-by: Antonio Quartulli <antonio@openvpn.net>
Link: https://patch.msgid.link/20260710-net-sft-fix-containers-v1-4-a2915c294ef5@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
tools/testing/selftests/net/ovpn/settings | 1 +
1 file changed, 1 insertion(+)
create mode 100644 tools/testing/selftests/net/ovpn/settings
diff --git a/tools/testing/selftests/net/ovpn/settings b/tools/testing/selftests/net/ovpn/settings
new file mode 100644
index 00000000000000..ba4d85f74cd6b9
--- /dev/null
+++ b/tools/testing/selftests/net/ovpn/settings
@@ -0,0 +1 @@
+timeout=90
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 252/675] selftests: drv-net: increase timeout
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (250 preceding siblings ...)
2026-07-30 14:09 ` [PATCH 6.18 251/675] selftests: ovpn: increase timeout Greg Kroah-Hartman
@ 2026-07-30 14:09 ` Greg Kroah-Hartman
2026-07-30 14:09 ` [PATCH 6.18 253/675] gtp: check skb_pull_data() return in gtp1u_send_echo_resp() Greg Kroah-Hartman
` (427 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:09 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Matthieu Baerts (NGI0),
Jakub Kicinski, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Matthieu Baerts (NGI0) <matttbe@kernel.org>
[ Upstream commit 3529d75d67411497341cd804a045185d6035dff2 ]
The default timeout is 45 seconds, that's too low for the xdp.py test.
Indeed, this test can take up to 3 minutes with some debug kernel config
on NIPA. Set a timeout to 6 minutes, just to be on the safe side.
Note that the Fixes tag here points to the introduction of the xdp.py
test because I don't know when this test started to take more than 45
seconds. That's OK because a timeout of 6 minutes is not exaggerated.
Fixes: 1cbcb1b28b26 ("selftests: drv-net: Test XDP_PASS/DROP support")
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://patch.msgid.link/20260710-net-sft-fix-containers-v1-5-a2915c294ef5@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
tools/testing/selftests/drivers/net/settings | 1 +
1 file changed, 1 insertion(+)
create mode 100644 tools/testing/selftests/drivers/net/settings
diff --git a/tools/testing/selftests/drivers/net/settings b/tools/testing/selftests/drivers/net/settings
new file mode 100644
index 00000000000000..eef533824a3c19
--- /dev/null
+++ b/tools/testing/selftests/drivers/net/settings
@@ -0,0 +1 @@
+timeout=360
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 253/675] gtp: check skb_pull_data() return in gtp1u_send_echo_resp()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (251 preceding siblings ...)
2026-07-30 14:09 ` [PATCH 6.18 252/675] selftests: drv-net: " Greg Kroah-Hartman
@ 2026-07-30 14:09 ` Greg Kroah-Hartman
2026-07-30 14:09 ` [PATCH 6.18 254/675] nexthop: initialize extack in nh_res_bucket_migrate() Greg Kroah-Hartman
` (426 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:09 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, AutonomousCodeSecurity,
Xiang Mei (Microsoft), Jakub Kicinski, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Xiang Mei (Microsoft) <xmei5@asu.edu>
[ Upstream commit cd170f051dba9ac146fabcd1b91726487c0cb9fa ]
gtp1u_send_echo_resp() ignores skb_pull_data()'s return value. Its
caller gtp1u_udp_encap_recv() only guarantees 16 bytes (udphdr +
gtp1_header), but the pull requests 20 (gtp1_header_long + udphdr). For
a 16-19 byte echo request the pull fails and returns NULL without
advancing skb->data; execution continues, and the following skb_push()
plus the IP header pushed by iptunnel_xmit() move skb->data below
skb->head, tripping skb_under_panic().
Fix it by dropping the packet when skb_pull_data() fails.
skbuff: skb_under_panic: ...
kernel BUG at net/core/skbuff.c:214!
Call Trace:
skb_push (net/core/skbuff.c:2648)
iptunnel_xmit (net/ipv4/ip_tunnel_core.c:82)
gtp_encap_recv (drivers/net/gtp.c:701 drivers/net/gtp.c:808 drivers/net/gtp.c:920)
udp_queue_rcv_one_skb (net/ipv4/udp.c:2388)
...
Kernel panic - not syncing: Fatal exception in interrupt
Fixes: 9af41cc33471 ("gtp: Implement GTP echo response")
Reported-by: AutonomousCodeSecurity@microsoft.com
Signed-off-by: Xiang Mei (Microsoft) <xmei5@asu.edu>
Link: https://patch.msgid.link/20260710230724.942574-1-xmei5@asu.edu
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/gtp.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/net/gtp.c b/drivers/net/gtp.c
index 937d913ce5c334..98614d0b390b8c 100644
--- a/drivers/net/gtp.c
+++ b/drivers/net/gtp.c
@@ -669,8 +669,9 @@ static int gtp1u_send_echo_resp(struct gtp_dev *gtp, struct sk_buff *skb)
return -1;
/* pull GTP and UDP headers */
- skb_pull_data(skb,
- sizeof(struct gtp1_header_long) + sizeof(struct udphdr));
+ if (!skb_pull_data(skb, sizeof(struct gtp1_header_long) +
+ sizeof(struct udphdr)))
+ return -1;
gtp_pkt = skb_push(skb, sizeof(struct gtp1u_packet));
memset(gtp_pkt, 0, sizeof(struct gtp1u_packet));
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 254/675] nexthop: initialize extack in nh_res_bucket_migrate()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (252 preceding siblings ...)
2026-07-30 14:09 ` [PATCH 6.18 253/675] gtp: check skb_pull_data() return in gtp1u_send_echo_resp() Greg Kroah-Hartman
@ 2026-07-30 14:09 ` Greg Kroah-Hartman
2026-07-30 14:09 ` [PATCH 6.18 255/675] tipc: fix infinite loop in __tipc_nl_compat_dumpit Greg Kroah-Hartman
` (425 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:09 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, AutonomousCodeSecurity,
Xiang Mei (Microsoft), Ido Schimmel, Jakub Kicinski, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Xiang Mei (Microsoft) <xmei5@asu.edu>
[ Upstream commit 6347c5314cee49f364aaf2e40ff15415a57a116e ]
nh_res_bucket_migrate() passes an uninitialized netlink_ext_ack to
call_nexthop_res_bucket_notifiers(). When
nh_notifier_res_bucket_info_init() fails (e.g. the kzalloc returns
-ENOMEM), the error is propagated back before any notifier sets
extack._msg, and the error path formats the stale pointer with
pr_err_ratelimited("%s\n", extack._msg). With CONFIG_INIT_STACK_NONE
this dereferences uninitialized stack memory:
Oops: general protection fault, probably for non-canonical address ...
KASAN: maybe wild-memory-access in range [...]
RIP: 0010:string (lib/vsprintf.c:730)
vsnprintf (lib/vsprintf.c:2945)
_printk (kernel/printk/printk.c:2504)
nh_res_bucket_migrate (net/ipv4/nexthop.c:1816)
nh_res_table_upkeep (net/ipv4/nexthop.c:1866)
rtm_new_nexthop (net/ipv4/nexthop.c:3323)
rtnetlink_rcv_msg (net/core/rtnetlink.c:7076)
netlink_sendmsg (net/netlink/af_netlink.c:1900)
Kernel panic - not syncing: Fatal exception
Zero-initialize extack so _msg is NULL on error paths that never set it.
Fixes: 7c37c7e00411 ("nexthop: Implement notifiers for resilient nexthop groups")
Reported-by: AutonomousCodeSecurity@microsoft.com
Signed-off-by: Xiang Mei (Microsoft) <xmei5@asu.edu>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Link: https://patch.msgid.link/20260713221551.3344650-1-xmei5@asu.edu
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/ipv4/nexthop.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/ipv4/nexthop.c b/net/ipv4/nexthop.c
index 5a95b64b61c59e..a8bf1ec548995f 100644
--- a/net/ipv4/nexthop.c
+++ b/net/ipv4/nexthop.c
@@ -1791,8 +1791,8 @@ static bool nh_res_bucket_migrate(struct nh_res_table *res_table,
bool notify_nl, bool force)
{
struct nh_res_bucket *bucket = &res_table->nh_buckets[bucket_index];
+ struct netlink_ext_ack extack = {};
struct nh_grp_entry *new_nhge;
- struct netlink_ext_ack extack;
int err;
new_nhge = list_first_entry_or_null(&res_table->uw_nh_entries,
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 255/675] tipc: fix infinite loop in __tipc_nl_compat_dumpit
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (253 preceding siblings ...)
2026-07-30 14:09 ` [PATCH 6.18 254/675] nexthop: initialize extack in nh_res_bucket_migrate() Greg Kroah-Hartman
@ 2026-07-30 14:09 ` Greg Kroah-Hartman
2026-07-30 14:09 ` [PATCH 6.18 256/675] ppp: enable TX scatter-gather Greg Kroah-Hartman
` (424 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:09 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, syzbot+85d0bec020d805014a3a,
Helen Koike, Tung Nguyen, Jakub Kicinski, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Helen Koike <koike@igalia.com>
[ Upstream commit 22f8aa35964e8f2ab026578f45befc9605fd1b28 ]
cmd->dumpit callback can return a negative errno, causing an infinite
loop due to the while(len) condition. As the loop never terminates,
genl_mutex is never released, and other tasks waiting on it starve in D
state.
Check dumpit's return value, propagate it and jump to err_out on error.
Reported-by: syzbot+85d0bec020d805014a3a@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=85d0bec020d805014a3a
Fixes: d0796d1ef63d ("tipc: convert legacy nl bearer dump to nl compat")
Signed-off-by: Helen Koike <koike@igalia.com>
Reviewed-by: Tung Nguyen <tung.quang.nguyen@est.tech
Reviewed-by: Tung Nguyen <tung.quang.nguyen@est.tech>
Link: https://patch.msgid.link/20260713204940.647668-1-koike@igalia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/tipc/netlink_compat.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/net/tipc/netlink_compat.c b/net/tipc/netlink_compat.c
index 079aebb16ed8ff..30e37c05a3f334 100644
--- a/net/tipc/netlink_compat.c
+++ b/net/tipc/netlink_compat.c
@@ -222,6 +222,10 @@ static int __tipc_nl_compat_dumpit(struct tipc_nl_compat_cmd_dump *cmd,
int rem;
len = (*cmd->dumpit)(buf, &cb);
+ if (len < 0) {
+ err = len;
+ goto err_out;
+ }
nlmsg_for_each_msg(nlmsg, nlmsg_hdr(buf), len, rem) {
err = nlmsg_parse_deprecated(nlmsg, GENL_HDRLEN,
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 256/675] ppp: enable TX scatter-gather
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (254 preceding siblings ...)
2026-07-30 14:09 ` [PATCH 6.18 255/675] tipc: fix infinite loop in __tipc_nl_compat_dumpit Greg Kroah-Hartman
@ 2026-07-30 14:09 ` Greg Kroah-Hartman
2026-07-30 14:09 ` [PATCH 6.18 257/675] ppp: dont store tx skb in the fastpath Greg Kroah-Hartman
` (423 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:09 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Qingfang Deng, Paolo Abeni,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Qingfang Deng <dqfext@gmail.com>
[ Upstream commit 42fcb213e58a7da33d5d2d7517b4e521025c68c3 ]
PPP channels using chan->direct_xmit prepend the PPP header to a skb and
call dev_queue_xmit() directly. In this mode the skb does not need to be
linear, but the PPP netdevice currently does not advertise
scatter-gather features, causing unnecessary linearization and
preventing GSO.
Enable NETIF_F_SG and NETIF_F_FRAGLIST on PPP devices. In case a linear
buffer is required (PPP compression, multilink, and channels without
direct_xmit), call skb_linearize() explicitly.
Signed-off-by: Qingfang Deng <dqfext@gmail.com>
Link: https://patch.msgid.link/20260129012902.941-1-dqfext@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Stable-dep-of: ba712ecfd942 ("ppp: annotate concurrent dev->stats accesses")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ppp/ppp_generic.c | 30 +++++++++++++++++++++++++-----
1 file changed, 25 insertions(+), 5 deletions(-)
diff --git a/drivers/net/ppp/ppp_generic.c b/drivers/net/ppp/ppp_generic.c
index 72e98286fba2fe..6d001fb1462d30 100644
--- a/drivers/net/ppp/ppp_generic.c
+++ b/drivers/net/ppp/ppp_generic.c
@@ -1645,6 +1645,8 @@ static void ppp_setup(struct net_device *dev)
dev->flags = IFF_POINTOPOINT | IFF_NOARP | IFF_MULTICAST;
dev->priv_destructor = ppp_dev_priv_destructor;
dev->pcpu_stat_type = NETDEV_PCPU_STAT_TSTATS;
+ dev->features = NETIF_F_SG | NETIF_F_FRAGLIST;
+ dev->hw_features = dev->features;
netif_keep_dst(dev);
}
@@ -1714,6 +1716,10 @@ pad_compress_skb(struct ppp *ppp, struct sk_buff *skb)
ppp->xcomp->comp_extra + ppp->dev->hard_header_len;
int compressor_skb_size = ppp->dev->mtu +
ppp->xcomp->comp_extra + PPP_HDRLEN;
+
+ if (skb_linearize(skb))
+ return NULL;
+
new_skb = alloc_skb(new_skb_size, GFP_ATOMIC);
if (!new_skb) {
if (net_ratelimit())
@@ -1801,6 +1807,10 @@ ppp_send_frame(struct ppp *ppp, struct sk_buff *skb)
case PPP_IP:
if (!ppp->vj || (ppp->flags & SC_COMP_TCP) == 0)
break;
+
+ if (skb_linearize(skb))
+ goto drop;
+
/* try to do VJ TCP header compression */
new_skb = alloc_skb(skb->len + ppp->dev->hard_header_len - 2,
GFP_ATOMIC);
@@ -1898,19 +1908,26 @@ ppp_push(struct ppp *ppp)
}
if ((ppp->flags & SC_MULTILINK) == 0) {
+ struct ppp_channel *chan;
/* not doing multilink: send it down the first channel */
list = list->next;
pch = list_entry(list, struct channel, clist);
spin_lock(&pch->downl);
- if (pch->chan) {
- if (pch->chan->ops->start_xmit(pch->chan, skb))
- ppp->xmit_pending = NULL;
- } else {
- /* channel got unregistered */
+ chan = pch->chan;
+ if (unlikely(!chan || (!chan->direct_xmit && skb_linearize(skb)))) {
+ /* channel got unregistered, or it requires a linear
+ * skb but linearization failed
+ */
kfree_skb(skb);
ppp->xmit_pending = NULL;
+ goto out;
}
+
+ if (chan->ops->start_xmit(chan, skb))
+ ppp->xmit_pending = NULL;
+
+out:
spin_unlock(&pch->downl);
return;
}
@@ -1995,6 +2012,8 @@ static int ppp_mp_explode(struct ppp *ppp, struct sk_buff *skb)
return 0; /* can't take now, leave it in xmit_pending */
/* Do protocol field compression */
+ if (skb_linearize(skb))
+ goto err_linearize;
p = skb->data;
len = skb->len;
if (*p == 0 && mp_protocol_compress) {
@@ -2153,6 +2172,7 @@ static int ppp_mp_explode(struct ppp *ppp, struct sk_buff *skb)
noskb:
spin_unlock(&pch->downl);
+ err_linearize:
if (ppp->debug & 1)
netdev_err(ppp->dev, "PPP: no memory (fragment)\n");
++ppp->dev->stats.tx_errors;
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 257/675] ppp: dont store tx skb in the fastpath
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (255 preceding siblings ...)
2026-07-30 14:09 ` [PATCH 6.18 256/675] ppp: enable TX scatter-gather Greg Kroah-Hartman
@ 2026-07-30 14:09 ` Greg Kroah-Hartman
2026-07-30 14:09 ` [PATCH 6.18 258/675] ppp: annotate concurrent dev->stats accesses Greg Kroah-Hartman
` (422 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:09 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Qingfang Deng, Paolo Abeni,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Qingfang Deng <dqfext@gmail.com>
[ Upstream commit 70836c8d0fe046400de8cdcf0613b2f1f6bddde3 ]
Currently, ppp->xmit_pending is used in ppp_send_frame() to pass a skb
to ppp_push(), and holds the skb when a PPP channel cannot immediately
transmit it. This state is redundant because the transmit queue
(ppp->file.xq) can already handle the backlog. Furthermore, during
normal operation, an skb is queued in file.xq only to be immediately
dequeued, causing unnecessary overhead.
Refactor the transmit path to avoid stashing the skb when possible:
- Remove ppp->xmit_pending.
- Rename ppp_send_frame() to ppp_prepare_tx_skb(), and don't call
ppp_push() in it. It returns 1 if the skb is consumed
(dropped/handled) or 0 if it can be passed to ppp_push().
- Update ppp_push() to accept the skb. It returns 1 if the skb is
consumed, or 0 if the channel is busy.
- Optimize __ppp_xmit_process():
- Fastpath: If the queue is empty, attempt to send the skb directly
via ppp_push(). If busy, queue it.
- Slowpath: If the queue is not empty, process the backlog in
file.xq. Split dequeuing loop into a separate function
ppp_xmit_flush() so ppp_channel_push() uses that directly instead of
passing a NULL skb to __ppp_xmit_process().
This simplifies the states and reduces locking in the fastpath.
Signed-off-by: Qingfang Deng <dqfext@gmail.com>
Link: https://patch.msgid.link/20260303093219.234403-1-dqfext@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Stable-dep-of: ba712ecfd942 ("ppp: annotate concurrent dev->stats accesses")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ppp/ppp_generic.c | 111 ++++++++++++++++++++--------------
1 file changed, 65 insertions(+), 46 deletions(-)
diff --git a/drivers/net/ppp/ppp_generic.c b/drivers/net/ppp/ppp_generic.c
index 6d001fb1462d30..e09a916356a1d4 100644
--- a/drivers/net/ppp/ppp_generic.c
+++ b/drivers/net/ppp/ppp_generic.c
@@ -134,7 +134,6 @@ struct ppp {
int debug; /* debug flags 70 */
struct slcompress *vj; /* state for VJ header compression */
enum NPmode npmode[NUM_NP]; /* what to do with each net proto 78 */
- struct sk_buff *xmit_pending; /* a packet ready to go out 88 */
struct compressor *xcomp; /* transmit packet compressor 8c */
void *xc_state; /* its internal state 90 */
struct compressor *rcomp; /* receive decompressor 94 */
@@ -265,8 +264,8 @@ struct ppp_net {
static int ppp_unattached_ioctl(struct net *net, struct ppp_file *pf,
struct file *file, unsigned int cmd, unsigned long arg);
static void ppp_xmit_process(struct ppp *ppp, struct sk_buff *skb);
-static void ppp_send_frame(struct ppp *ppp, struct sk_buff *skb);
-static void ppp_push(struct ppp *ppp);
+static int ppp_prepare_tx_skb(struct ppp *ppp, struct sk_buff **pskb);
+static int ppp_push(struct ppp *ppp, struct sk_buff *skb);
static void ppp_channel_push(struct channel *pch);
static void ppp_receive_frame(struct ppp *ppp, struct sk_buff *skb,
struct channel *pch);
@@ -1655,26 +1654,44 @@ static void ppp_setup(struct net_device *dev)
*/
/* Called to do any work queued up on the transmit side that can now be done */
+static void ppp_xmit_flush(struct ppp *ppp)
+{
+ struct sk_buff *skb;
+
+ while ((skb = skb_dequeue(&ppp->file.xq))) {
+ if (unlikely(!ppp_push(ppp, skb))) {
+ skb_queue_head(&ppp->file.xq, skb);
+ return;
+ }
+ }
+ /* If there's no work left to do, tell the core net code that we can
+ * accept some more.
+ */
+ netif_wake_queue(ppp->dev);
+}
+
static void __ppp_xmit_process(struct ppp *ppp, struct sk_buff *skb)
{
ppp_xmit_lock(ppp);
- if (!ppp->closing) {
- ppp_push(ppp);
-
- if (skb)
+ if (unlikely(ppp->closing)) {
+ kfree_skb(skb);
+ goto out;
+ }
+ if (unlikely(ppp_prepare_tx_skb(ppp, &skb)))
+ goto out;
+ /* Fastpath: No backlog, just send the new skb. */
+ if (likely(skb_queue_empty(&ppp->file.xq))) {
+ if (unlikely(!ppp_push(ppp, skb))) {
skb_queue_tail(&ppp->file.xq, skb);
- while (!ppp->xmit_pending &&
- (skb = skb_dequeue(&ppp->file.xq)))
- ppp_send_frame(ppp, skb);
- /* If there's no work left to do, tell the core net
- code that we can accept some more. */
- if (!ppp->xmit_pending && !skb_peek(&ppp->file.xq))
- netif_wake_queue(ppp->dev);
- else
netif_stop_queue(ppp->dev);
- } else {
- kfree_skb(skb);
+ }
+ goto out;
}
+
+ /* Slowpath: Enqueue the new skb and process backlog */
+ skb_queue_tail(&ppp->file.xq, skb);
+ ppp_xmit_flush(ppp);
+out:
ppp_xmit_unlock(ppp);
}
@@ -1761,13 +1778,15 @@ pad_compress_skb(struct ppp *ppp, struct sk_buff *skb)
}
/*
- * Compress and send a frame.
- * The caller should have locked the xmit path,
- * and xmit_pending should be 0.
+ * Compress and prepare to send a frame.
+ * The caller should have locked the xmit path.
+ * Returns 1 if the skb was consumed, 0 if it can be passed to ppp_push().
+ * @pskb is updated if a compressor is in use.
*/
-static void
-ppp_send_frame(struct ppp *ppp, struct sk_buff *skb)
+static int
+ppp_prepare_tx_skb(struct ppp *ppp, struct sk_buff **pskb)
{
+ struct sk_buff *skb = *pskb;
int proto = PPP_PROTO(skb);
struct sk_buff *new_skb;
int len;
@@ -1788,7 +1807,7 @@ ppp_send_frame(struct ppp *ppp, struct sk_buff *skb)
"PPP: outbound frame "
"not passed\n");
kfree_skb(skb);
- return;
+ return 1;
}
/* if this packet passes the active filter, record the time */
if (!(ppp->active_filter &&
@@ -1836,6 +1855,7 @@ ppp_send_frame(struct ppp *ppp, struct sk_buff *skb)
}
consume_skb(skb);
skb = new_skb;
+ *pskb = skb;
cp = skb_put(skb, len + 2);
cp[0] = 0;
cp[1] = proto;
@@ -1862,6 +1882,7 @@ ppp_send_frame(struct ppp *ppp, struct sk_buff *skb)
if (!new_skb)
goto drop;
skb = new_skb;
+ *pskb = skb;
}
/*
@@ -1873,42 +1894,38 @@ ppp_send_frame(struct ppp *ppp, struct sk_buff *skb)
goto drop;
skb_queue_tail(&ppp->file.rq, skb);
wake_up_interruptible(&ppp->file.rwait);
- return;
+ return 1;
}
- ppp->xmit_pending = skb;
- ppp_push(ppp);
- return;
+ return 0;
drop:
kfree_skb(skb);
++ppp->dev->stats.tx_errors;
+ return 1;
}
/*
- * Try to send the frame in xmit_pending.
+ * Try to send the frame.
* The caller should have the xmit path locked.
+ * Returns 1 if the skb was consumed, 0 if not.
*/
-static void
-ppp_push(struct ppp *ppp)
+static int
+ppp_push(struct ppp *ppp, struct sk_buff *skb)
{
struct list_head *list;
struct channel *pch;
- struct sk_buff *skb = ppp->xmit_pending;
-
- if (!skb)
- return;
list = &ppp->channels;
if (list_empty(list)) {
/* nowhere to send the packet, just drop it */
- ppp->xmit_pending = NULL;
kfree_skb(skb);
- return;
+ return 1;
}
if ((ppp->flags & SC_MULTILINK) == 0) {
struct ppp_channel *chan;
+ int ret;
/* not doing multilink: send it down the first channel */
list = list->next;
pch = list_entry(list, struct channel, clist);
@@ -1920,27 +1937,26 @@ ppp_push(struct ppp *ppp)
* skb but linearization failed
*/
kfree_skb(skb);
- ppp->xmit_pending = NULL;
+ ret = 1;
goto out;
}
- if (chan->ops->start_xmit(chan, skb))
- ppp->xmit_pending = NULL;
+ ret = chan->ops->start_xmit(chan, skb);
out:
spin_unlock(&pch->downl);
- return;
+ return ret;
}
#ifdef CONFIG_PPP_MULTILINK
/* Multilink: fragment the packet over as many links
as can take the packet at the moment. */
if (!ppp_mp_explode(ppp, skb))
- return;
+ return 0;
#endif /* CONFIG_PPP_MULTILINK */
- ppp->xmit_pending = NULL;
kfree_skb(skb);
+ return 1;
}
#ifdef CONFIG_PPP_MULTILINK
@@ -2009,7 +2025,7 @@ static int ppp_mp_explode(struct ppp *ppp, struct sk_buff *skb)
* performance if we have a lot of channels.
*/
if (nfree == 0 || nfree < navail / 2)
- return 0; /* can't take now, leave it in xmit_pending */
+ return 0; /* can't take now, leave it in transmit queue */
/* Do protocol field compression */
if (skb_linearize(skb))
@@ -2203,8 +2219,12 @@ static void __ppp_channel_push(struct channel *pch, struct ppp *ppp)
spin_unlock(&pch->downl);
/* see if there is anything from the attached unit to be sent */
if (skb_queue_empty(&pch->file.xq)) {
- if (ppp)
- __ppp_xmit_process(ppp, NULL);
+ if (ppp) {
+ ppp_xmit_lock(ppp);
+ if (!ppp->closing)
+ ppp_xmit_flush(ppp);
+ ppp_xmit_unlock(ppp);
+ }
}
}
@@ -3464,7 +3484,6 @@ static void ppp_destroy_interface(struct ppp *ppp)
}
#endif /* CONFIG_PPP_FILTER */
- kfree_skb(ppp->xmit_pending);
free_percpu(ppp->xmit_recursion);
free_netdev(ppp->dev);
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 258/675] ppp: annotate concurrent dev->stats accesses
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (256 preceding siblings ...)
2026-07-30 14:09 ` [PATCH 6.18 257/675] ppp: dont store tx skb in the fastpath Greg Kroah-Hartman
@ 2026-07-30 14:09 ` Greg Kroah-Hartman
2026-07-30 14:09 ` [PATCH 6.18 259/675] wifi: mt76: mt7925: guard link STA in decap offload Greg Kroah-Hartman
` (421 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:09 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Eric Dumazet, Qingfang Deng,
Jakub Kicinski, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Eric Dumazet <edumazet@google.com>
[ Upstream commit ba712ecfd942b68b21a4b0a5daaf72f6616cc66d ]
dev->stats fields can be updated concurrently from multiple CPUs
without synchronization.
Use DEV_STATS_INC() for stats increments and DEV_STATS_READ()
when reading dev->stats in ppp_get_stats64() and ppp_get_stats()
to avoid data races.
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Qingfang Deng <qingfang.deng@linux.dev>
Link: https://patch.msgid.link/20260715055541.1147542-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ppp/ppp_generic.c | 32 ++++++++++++++++----------------
1 file changed, 16 insertions(+), 16 deletions(-)
diff --git a/drivers/net/ppp/ppp_generic.c b/drivers/net/ppp/ppp_generic.c
index e09a916356a1d4..a2fe0fe2f3389f 100644
--- a/drivers/net/ppp/ppp_generic.c
+++ b/drivers/net/ppp/ppp_generic.c
@@ -1490,7 +1490,7 @@ ppp_start_xmit(struct sk_buff *skb, struct net_device *dev)
outf:
kfree_skb(skb);
- ++dev->stats.tx_dropped;
+ DEV_STATS_INC(dev, tx_dropped);
return NETDEV_TX_OK;
}
@@ -1540,11 +1540,11 @@ ppp_net_siocdevprivate(struct net_device *dev, struct ifreq *ifr,
static void
ppp_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats64)
{
- stats64->rx_errors = dev->stats.rx_errors;
- stats64->tx_errors = dev->stats.tx_errors;
- stats64->rx_dropped = dev->stats.rx_dropped;
- stats64->tx_dropped = dev->stats.tx_dropped;
- stats64->rx_length_errors = dev->stats.rx_length_errors;
+ stats64->rx_errors = DEV_STATS_READ(dev, rx_errors);
+ stats64->tx_errors = DEV_STATS_READ(dev, tx_errors);
+ stats64->rx_dropped = DEV_STATS_READ(dev, rx_dropped);
+ stats64->tx_dropped = DEV_STATS_READ(dev, tx_dropped);
+ stats64->rx_length_errors = DEV_STATS_READ(dev, rx_length_errors);
dev_fetch_sw_netstats(stats64, dev->tstats);
}
@@ -1901,7 +1901,7 @@ ppp_prepare_tx_skb(struct ppp *ppp, struct sk_buff **pskb)
drop:
kfree_skb(skb);
- ++ppp->dev->stats.tx_errors;
+ DEV_STATS_INC(ppp->dev, tx_errors);
return 1;
}
@@ -2191,7 +2191,7 @@ static int ppp_mp_explode(struct ppp *ppp, struct sk_buff *skb)
err_linearize:
if (ppp->debug & 1)
netdev_err(ppp->dev, "PPP: no memory (fragment)\n");
- ++ppp->dev->stats.tx_errors;
+ DEV_STATS_INC(ppp->dev, tx_errors);
++ppp->nxseq;
return 1; /* abandon the frame */
}
@@ -2364,7 +2364,7 @@ ppp_input(struct ppp_channel *chan, struct sk_buff *skb)
if (!ppp_decompress_proto(skb)) {
kfree_skb(skb);
if (ppp) {
- ++ppp->dev->stats.rx_length_errors;
+ DEV_STATS_INC(ppp->dev, rx_length_errors);
ppp_receive_error(ppp);
}
goto done;
@@ -2437,7 +2437,7 @@ ppp_receive_frame(struct ppp *ppp, struct sk_buff *skb, struct channel *pch)
static void
ppp_receive_error(struct ppp *ppp)
{
- ++ppp->dev->stats.rx_errors;
+ DEV_STATS_INC(ppp->dev, rx_errors);
if (ppp->vj)
slhc_toss(ppp->vj);
}
@@ -2704,7 +2704,7 @@ ppp_receive_mp_frame(struct ppp *ppp, struct sk_buff *skb, struct channel *pch)
*/
if (seq_before(seq, ppp->nextseq)) {
kfree_skb(skb);
- ++ppp->dev->stats.rx_dropped;
+ DEV_STATS_INC(ppp->dev, rx_dropped);
ppp_receive_error(ppp);
return;
}
@@ -2740,7 +2740,7 @@ ppp_receive_mp_frame(struct ppp *ppp, struct sk_buff *skb, struct channel *pch)
if (pskb_may_pull(skb, 2))
ppp_receive_nonmp_frame(ppp, skb);
else {
- ++ppp->dev->stats.rx_length_errors;
+ DEV_STATS_INC(ppp->dev, rx_length_errors);
kfree_skb(skb);
ppp_receive_error(ppp);
}
@@ -2846,7 +2846,7 @@ ppp_mp_reconstruct(struct ppp *ppp)
if (lost == 0 && (PPP_MP_CB(p)->BEbits & E) &&
(PPP_MP_CB(head)->BEbits & B)) {
if (len > ppp->mrru + 2) {
- ++ppp->dev->stats.rx_length_errors;
+ DEV_STATS_INC(ppp->dev, rx_length_errors);
netdev_printk(KERN_DEBUG, ppp->dev,
"PPP: reconstructed packet"
" is too long (%d)\n", len);
@@ -2901,7 +2901,7 @@ ppp_mp_reconstruct(struct ppp *ppp)
" missed pkts %u..%u\n",
ppp->nextseq,
PPP_MP_CB(head)->sequence-1);
- ++ppp->dev->stats.rx_dropped;
+ DEV_STATS_INC(ppp->dev, rx_dropped);
ppp_receive_error(ppp);
}
@@ -3370,8 +3370,8 @@ ppp_get_stats(struct ppp *ppp, struct ppp_stats *st)
st->p.ppp_opackets += tx_packets;
st->p.ppp_obytes += tx_bytes;
}
- st->p.ppp_ierrors = ppp->dev->stats.rx_errors;
- st->p.ppp_oerrors = ppp->dev->stats.tx_errors;
+ st->p.ppp_ierrors = DEV_STATS_READ(ppp->dev, rx_errors);
+ st->p.ppp_oerrors = DEV_STATS_READ(ppp->dev, tx_errors);
if (!vj)
return;
st->vj.vjs_packets = vj->sls_o_compressed + vj->sls_o_uncompressed;
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 259/675] wifi: mt76: mt7925: guard link STA in decap offload
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (257 preceding siblings ...)
2026-07-30 14:09 ` [PATCH 6.18 258/675] ppp: annotate concurrent dev->stats accesses Greg Kroah-Hartman
@ 2026-07-30 14:09 ` Greg Kroah-Hartman
2026-07-30 14:09 ` [PATCH 6.18 260/675] wifi: mt76: mt7915: guard HE capability lookups Greg Kroah-Hartman
` (420 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:09 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Guangshuo Li, Felix Fietkau,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Guangshuo Li <lgs201920130244@gmail.com>
[ Upstream commit 96ea44f2269f30364cffa054ee3a87e595bef0d4 ]
mt7925_sta_set_decap_offload() iterates over the vif valid_links mask
when updating decap offload state for an MLO station. The station may not
have a link STA for every valid link of the vif, so mt792x_sta_to_link()
can return NULL for a link that belongs to the vif but not to the station.
The function currently dereferences mlink before checking whether the
link WCID is ready. If mlink is NULL, setting or clearing
MT_WCID_FLAG_HDR_TRANS dereferences a NULL pointer.
Skip links without a station link before touching mlink->wcid.
Fixes: b859ad65309a ("wifi: mt76: mt7925: add link handling in mt7925_sta_set_decap_offload")
Signed-off-by: Guangshuo Li <lgs201920130244@gmail.com>
Link: https://patch.msgid.link/20260708075539.726200-1-lgs201920130244@gmail.com
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/wireless/mediatek/mt76/mt7925/main.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7925/main.c b/drivers/net/wireless/mediatek/mt76/mt7925/main.c
index 6c0dc72efc3928..910713e62e14a5 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7925/main.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7925/main.c
@@ -1573,6 +1573,9 @@ static void mt7925_sta_set_decap_offload(struct ieee80211_hw *hw,
mlink = mt792x_sta_to_link(msta, i);
+ if (!mlink)
+ continue;
+
if (enabled)
set_bit(MT_WCID_FLAG_HDR_TRANS, &mlink->wcid.flags);
else
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 260/675] wifi: mt76: mt7915: guard HE capability lookups
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (258 preceding siblings ...)
2026-07-30 14:09 ` [PATCH 6.18 259/675] wifi: mt76: mt7925: guard link STA in decap offload Greg Kroah-Hartman
@ 2026-07-30 14:09 ` Greg Kroah-Hartman
2026-07-30 14:09 ` [PATCH 6.18 261/675] wifi: mt76: connac: fix possible NULL-pointer deref in mt76_connac_mcu_uni_bss_he_tlv() Greg Kroah-Hartman
` (419 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:09 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Ruoyu Wang, Lorenzo Bianconi,
Felix Fietkau, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Ruoyu Wang <ruoyuw560@gmail.com>
[ Upstream commit 8e9db062654a388d0fa587acbeeae68dd33eba41 ]
mt7915_mcu_bss_he_tlv() and mt7915_mcu_sta_bfer_tlv() both run after
checking HE support, then dereference the HE PHY capability returned by
mt76_connac_get_he_phy_cap(). That helper can return NULL when no
capability entry matches the vif type.
Fetch the capability before appending the TLV and skip the HE-specific
setup when no matching capability is available.
Fixes: e6d557a78b60 ("mt76: mt7915: rely on mt76_connac_get_phy utilities")
Signed-off-by: Ruoyu Wang <ruoyuw560@gmail.com>
Acked-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://patch.msgid.link/20260620155332.81120-1-ruoyuw560@gmail.com
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
.../net/wireless/mediatek/mt76/mt7915/mcu.c | 18 +++++++++++++-----
1 file changed, 13 insertions(+), 5 deletions(-)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
index 79e021ac0bdbcc..f60e2eaea2af4a 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
@@ -595,6 +595,8 @@ mt7915_mcu_bss_he_tlv(struct sk_buff *skb, struct ieee80211_vif *vif,
struct tlv *tlv;
cap = mt76_connac_get_he_phy_cap(phy->mt76, vif);
+ if (!cap)
+ return;
tlv = mt76_connac_mcu_add_tlv(skb, BSS_INFO_HE_BASIC, sizeof(*he));
@@ -1177,13 +1179,12 @@ mt7915_mcu_sta_bfer_vht(struct ieee80211_sta *sta, struct mt7915_phy *phy,
}
static void
-mt7915_mcu_sta_bfer_he(struct ieee80211_sta *sta, struct ieee80211_vif *vif,
- struct mt7915_phy *phy, struct sta_rec_bf *bf)
+mt7915_mcu_sta_bfer_he(struct ieee80211_sta *sta,
+ const struct ieee80211_sta_he_cap *vc,
+ struct sta_rec_bf *bf)
{
struct ieee80211_sta_he_cap *pc = &sta->deflink.he_cap;
struct ieee80211_he_cap_elem *pe = &pc->he_cap_elem;
- const struct ieee80211_sta_he_cap *vc =
- mt76_connac_get_he_phy_cap(phy->mt76, vif);
const struct ieee80211_he_cap_elem *ve = &vc->he_cap_elem;
u16 mcs_map = le16_to_cpu(pc->he_mcs_nss_supp.rx_mcs_80);
u8 nss_mcs = mt7915_mcu_get_sta_nss(mcs_map);
@@ -1242,6 +1243,7 @@ mt7915_mcu_sta_bfer_tlv(struct mt7915_dev *dev, struct sk_buff *skb,
{
struct mt7915_vif *mvif = (struct mt7915_vif *)vif->drv_priv;
struct mt7915_phy *phy = mvif->phy;
+ const struct ieee80211_sta_he_cap *vc = NULL;
int tx_ant = hweight8(phy->mt76->chainmask) - 1;
struct sta_rec_bf *bf;
struct tlv *tlv;
@@ -1260,6 +1262,12 @@ mt7915_mcu_sta_bfer_tlv(struct mt7915_dev *dev, struct sk_buff *skb,
if (!ebf && !dev->ibf)
return;
+ if (sta->deflink.he_cap.has_he && ebf) {
+ vc = mt76_connac_get_he_phy_cap(phy->mt76, vif);
+ if (!vc)
+ return;
+ }
+
tlv = mt76_connac_mcu_add_tlv(skb, STA_REC_BF, sizeof(*bf));
bf = (struct sta_rec_bf *)tlv;
@@ -1268,7 +1276,7 @@ mt7915_mcu_sta_bfer_tlv(struct mt7915_dev *dev, struct sk_buff *skb,
* ht: iBF only, since mac80211 lacks of eBF support
*/
if (sta->deflink.he_cap.has_he && ebf)
- mt7915_mcu_sta_bfer_he(sta, vif, phy, bf);
+ mt7915_mcu_sta_bfer_he(sta, vc, bf);
else if (sta->deflink.vht_cap.vht_supported)
mt7915_mcu_sta_bfer_vht(sta, phy, bf, ebf);
else if (sta->deflink.ht_cap.ht_supported)
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 261/675] wifi: mt76: connac: fix possible NULL-pointer deref in mt76_connac_mcu_uni_bss_he_tlv()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (259 preceding siblings ...)
2026-07-30 14:09 ` [PATCH 6.18 260/675] wifi: mt76: mt7915: guard HE capability lookups Greg Kroah-Hartman
@ 2026-07-30 14:09 ` Greg Kroah-Hartman
2026-07-30 14:09 ` [PATCH 6.18 262/675] wifi: mt76: mt7925: fix possible NULL-pointer deref in mt7925_mcu_bss_he_tlv() Greg Kroah-Hartman
` (418 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:09 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Lorenzo Bianconi, Felix Fietkau,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Lorenzo Bianconi <lorenzo@kernel.org>
[ Upstream commit 2c1fb2335f5e3afb34f91bc07ecb63517c328090 ]
mt76_connac_get_he_phy_cap routine can theoretically return NULL so
check cap pointer before dereferencing it.
Fixes: d0e274af2f2e4 ("mt76: mt76_connac: create mcu library")
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://patch.msgid.link/20260621-mt76_connac_get_he_phy_cap-fix-v1-1-ed4ccf7a0363@kernel.org
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.c b/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.c
index fc3e6728fcfbfb..2aa7b711c774e0 100644
--- a/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.c
@@ -1441,6 +1441,8 @@ mt76_connac_mcu_uni_bss_he_tlv(struct mt76_phy *phy, struct ieee80211_vif *vif,
struct bss_info_uni_he *he;
cap = mt76_connac_get_he_phy_cap(phy, vif);
+ if (!cap)
+ return;
he = (struct bss_info_uni_he *)tlv;
he->he_pe_duration = vif->bss_conf.htc_trig_based_pkt_ext;
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 262/675] wifi: mt76: mt7925: fix possible NULL-pointer deref in mt7925_mcu_bss_he_tlv()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (260 preceding siblings ...)
2026-07-30 14:09 ` [PATCH 6.18 261/675] wifi: mt76: connac: fix possible NULL-pointer deref in mt76_connac_mcu_uni_bss_he_tlv() Greg Kroah-Hartman
@ 2026-07-30 14:09 ` Greg Kroah-Hartman
2026-07-30 14:09 ` [PATCH 6.18 263/675] wifi: mt76: mt7996: check pointer returned by mt76_connac_get_he_phy_cap() Greg Kroah-Hartman
` (417 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:09 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Lorenzo Bianconi, Felix Fietkau,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Lorenzo Bianconi <lorenzo@kernel.org>
[ Upstream commit 8d1b6738c1ab48c086b17e7994034aca94258931 ]
mt76_connac_get_he_phy_cap routine can theoretically return NULL so
check cap pointer before dereferencing it.
Fixes: c948b5da6bbec ("wifi: mt76: mt7925: add Mediatek Wi-Fi7 driver for mt7925 chips")
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://patch.msgid.link/20260621-mt76_connac_get_he_phy_cap-fix-v1-2-ed4ccf7a0363@kernel.org
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/wireless/mediatek/mt76/mt7925/mcu.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c
index d887aa9a3dff72..647efa963db48d 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c
@@ -2706,6 +2706,8 @@ mt7925_mcu_bss_he_tlv(struct sk_buff *skb, struct ieee80211_bss_conf *link_conf,
struct tlv *tlv;
cap = mt76_connac_get_he_phy_cap(phy->mt76, link_conf->vif);
+ if (!cap)
+ return;
tlv = mt76_connac_mcu_add_tlv(skb, UNI_BSS_INFO_HE_BASIC, sizeof(*he));
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 263/675] wifi: mt76: mt7996: check pointer returned by mt76_connac_get_he_phy_cap()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (261 preceding siblings ...)
2026-07-30 14:09 ` [PATCH 6.18 262/675] wifi: mt76: mt7925: fix possible NULL-pointer deref in mt7925_mcu_bss_he_tlv() Greg Kroah-Hartman
@ 2026-07-30 14:09 ` Greg Kroah-Hartman
2026-07-30 14:09 ` [PATCH 6.18 264/675] wifi: mt76: mt7925: fix crash in reset link replay Greg Kroah-Hartman
` (416 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:09 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Lorenzo Bianconi, Felix Fietkau,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Lorenzo Bianconi <lorenzo@kernel.org>
[ Upstream commit e858cf6bf99880343348ff1e8c942aaff1d9d592 ]
mt76_connac_get_he_phy_cap routine can theoretically return NULL so
check cap pointer before dereferencing it.
Fixes: 98686cd21624c ("wifi: mt76: mt7996: add driver for MediaTek Wi-Fi 7 (802.11be) devices")
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://patch.msgid.link/20260621-mt76_connac_get_he_phy_cap-fix-v1-3-ed4ccf7a0363@kernel.org
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/wireless/mediatek/mt76/mt7996/mcu.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c
index a3f813be107df7..87ec7e90dfeebe 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c
@@ -860,6 +860,8 @@ mt7996_mcu_bss_he_tlv(struct sk_buff *skb, struct ieee80211_vif *vif,
struct tlv *tlv;
cap = mt76_connac_get_he_phy_cap(phy->mt76, vif);
+ if (!cap)
+ return;
tlv = mt7996_mcu_add_uni_tlv(skb, UNI_BSS_INFO_HE_BASIC, sizeof(*he));
@@ -1659,17 +1661,18 @@ mt7996_mcu_sta_bfer_he(struct ieee80211_link_sta *link_sta,
{
struct ieee80211_sta_he_cap *pc = &link_sta->he_cap;
struct ieee80211_he_cap_elem *pe = &pc->he_cap_elem;
- const struct ieee80211_sta_he_cap *vc =
- mt76_connac_get_he_phy_cap(phy->mt76, vif);
- const struct ieee80211_he_cap_elem *ve = &vc->he_cap_elem;
u16 mcs_map = le16_to_cpu(pc->he_mcs_nss_supp.rx_mcs_80);
u8 nss_mcs = mt7996_mcu_get_sta_nss(mcs_map);
+ const struct ieee80211_he_cap_elem *ve;
+ const struct ieee80211_sta_he_cap *vc;
u8 snd_dim, sts;
+ vc = mt76_connac_get_he_phy_cap(phy->mt76, vif);
if (!vc)
return;
bf->tx_mode = MT_PHY_TYPE_HE_SU;
+ ve = &vc->he_cap_elem;
mt7996_mcu_sta_sounding_rate(bf, phy);
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 264/675] wifi: mt76: mt7925: fix crash in reset link replay
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (262 preceding siblings ...)
2026-07-30 14:09 ` [PATCH 6.18 263/675] wifi: mt76: mt7996: check pointer returned by mt76_connac_get_he_phy_cap() Greg Kroah-Hartman
@ 2026-07-30 14:09 ` Greg Kroah-Hartman
2026-07-30 14:09 ` [PATCH 6.18 265/675] wifi: mt76: mt7996: fix possible NULL-pointer deref in mt7996_mcu_sta_bfer_eht() Greg Kroah-Hartman
` (415 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:09 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Sean Wang, Felix Fietkau,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Sean Wang <sean.wang@mediatek.com>
[ Upstream commit bd8b2ec838184236c3fcbf738a926328836adf12 ]
During reset recovery, mt7925_vif_connect_iter() replays firmware state
for links tracked in mvif->valid_links. After MLO link changes or MCU
timeout recovery, the driver bitmap can temporarily contain a link whose
mac80211 bss_conf has already gone away.
This can pass a NULL bss_conf to mt76_connac_mcu_uni_add_dev(), matching
the crash where x1, the second argument, is NULL:
pc : mt76_connac_mcu_uni_add_dev+0x8c/0x1f8 [mt76_connac_lib]
lr : mt7925_vif_connect_iter+0x9c/0x168 [mt7925_common]
x2 : ffffff80a77f6018 x1 : 0000000000000000 x0 : ffffff8099402080
Call trace:
mt76_connac_mcu_uni_add_dev+0x8c/0x1f8 [mt76_connac_lib]
mt7925_vif_connect_iter+0x9c/0x168 [mt7925_common]
mt7925_mac_reset_work+0x264/0x2f8 [mt7925_common]
Skip missing bss_conf entries before replaying the link. Non-MLO AP/STA
reset replay is unchanged because the helper still returns &vif->bss_conf
for the legacy link.
Fixes: 14061994184d ("wifi: mt76: mt7925: add link handling in mt7925_vif_connect_iter")
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Link: https://patch.msgid.link/20260616161016.19346-1-sean.wang@kernel.org
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/wireless/mediatek/mt76/mt7925/mac.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7925/mac.c b/drivers/net/wireless/mediatek/mt76/mt7925/mac.c
index d951a46e9d48ce..2ff74d0bef9d0e 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7925/mac.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7925/mac.c
@@ -1274,6 +1274,9 @@ mt7925_vif_connect_iter(void *priv, u8 *mac,
for_each_set_bit(i, &valid, IEEE80211_MLD_MAX_NUM_LINKS) {
bss_conf = mt792x_vif_to_bss_conf(vif, i);
+ if (!bss_conf)
+ continue;
+
mconf = mt792x_vif_to_link(mvif, i);
mt76_connac_mcu_uni_add_dev(&dev->mphy, bss_conf, &mconf->mt76,
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 265/675] wifi: mt76: mt7996: fix possible NULL-pointer deref in mt7996_mcu_sta_bfer_eht()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (263 preceding siblings ...)
2026-07-30 14:09 ` [PATCH 6.18 264/675] wifi: mt76: mt7925: fix crash in reset link replay Greg Kroah-Hartman
@ 2026-07-30 14:09 ` Greg Kroah-Hartman
2026-07-30 14:09 ` [PATCH 6.18 266/675] wifi: brcmfmac: fix 802.1X-SHA256 call trace warning Greg Kroah-Hartman
` (414 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:09 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Lorenzo Bianconi, Felix Fietkau,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Lorenzo Bianconi <lorenzo@kernel.org>
[ Upstream commit 2fffc472bec490c8357defcee9c075ca74467352 ]
mt76_connac_get_eht_phy_cap routine can theoretically return NULL so
check cap pointer before dereferencing it.
Fixes: ba01944adee9f ("wifi: mt76: mt7996: add EHT beamforming support")
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://patch.msgid.link/20260621-mt76_connac_get_he_phy_cap-fix-v1-4-ed4ccf7a0363@kernel.org
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/wireless/mediatek/mt76/mt7996/mcu.c | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c
index 87ec7e90dfeebe..72851399575f9d 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c
@@ -1728,14 +1728,18 @@ mt7996_mcu_sta_bfer_eht(struct ieee80211_link_sta *link_sta,
struct ieee80211_sta_eht_cap *pc = &link_sta->eht_cap;
struct ieee80211_eht_cap_elem_fixed *pe = &pc->eht_cap_elem;
struct ieee80211_eht_mcs_nss_supp *eht_nss = &pc->eht_mcs_nss_supp;
- const struct ieee80211_sta_eht_cap *vc =
- mt76_connac_get_eht_phy_cap(phy->mt76, vif);
- const struct ieee80211_eht_cap_elem_fixed *ve = &vc->eht_cap_elem;
u8 nss_mcs = u8_get_bits(eht_nss->bw._80.rx_tx_mcs9_max_nss,
IEEE80211_EHT_MCS_NSS_RX) - 1;
+ const struct ieee80211_eht_cap_elem_fixed *ve;
+ const struct ieee80211_sta_eht_cap *vc;
u8 snd_dim, sts;
+ vc = mt76_connac_get_eht_phy_cap(phy->mt76, vif);
+ if (!vc)
+ return;
+
bf->tx_mode = MT_PHY_TYPE_EHT_MU;
+ ve = &vc->eht_cap_elem;
mt7996_mcu_sta_sounding_rate(bf, phy);
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 266/675] wifi: brcmfmac: fix 802.1X-SHA256 call trace warning
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (264 preceding siblings ...)
2026-07-30 14:09 ` [PATCH 6.18 265/675] wifi: mt76: mt7996: fix possible NULL-pointer deref in mt7996_mcu_sta_bfer_eht() Greg Kroah-Hartman
@ 2026-07-30 14:09 ` Greg Kroah-Hartman
2026-07-30 14:09 ` [PATCH 6.18 267/675] ovl: fix trusted xattr escape prefix matching Greg Kroah-Hartman
` (413 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:09 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Shelley Yang, Arend van Spriel,
Johannes Berg, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Shelley Yang <shelley.yang@infineon.com>
[ Upstream commit 7cb34f6c4fe8a68af621d870abe63bfca2275dd6 ]
Based on wpa_auth as 1x_256 mode, need to set up
"use_fwsup" with BRCMF_PROFILE_FWSUP_1X.
Or it will happen trace warning when call brcmf_cfg80211_set_pmk().
[ 4481.831101] ------------[ cut here ]------------
[ 4481.831102] WARNING: CPU: 1 PID: 2997 at
drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c:7242 brcmf_cfg80211_set_pmk+0x77/0xd0 [brcmfmac]
[...]
[ 4481.831202] Call Trace:
[ 4481.831204] <TASK>
[ 4481.831205] nl80211_set_pmk+0x183/0x250 [cfg80211]
[ 4481.831233] genl_family_rcv_msg_doit+0xea/0x150
[ 4481.831237] genl_rcv_msg+0x104/0x240
[ 4481.831239] ? cfg80211_probe_status+0x2c0/0x2c0 [cfg80211]
[ 4481.831257] ? genl_family_rcv_msg_doit+0x150/0x150
[ 4481.831259] netlink_rcv_skb+0x4e/0x100
[ 4481.831261] genl_rcv+0x24/0x40
[ 4481.831262] netlink_unicast+0x236/0x380
[ 4481.831264] netlink_sendmsg+0x250/0x4b0
[ 4481.831266] sock_sendmsg+0x5c/0x70
[ 4481.831269] ____sys_sendmsg+0x236/0x2b0
[ 4481.831271] ? copy_msghdr_from_user+0x6d/0xa0
[ 4481.831272] ___sys_sendmsg+0x86/0xd0
[ 4481.831274] ? avc_has_perm+0x8c/0x1a0
[ 4481.831276] ? preempt_count_add+0x6a/0xa0
[ 4481.831279] ? sock_has_perm+0x82/0xa0
[ 4481.831280] __sys_sendmsg+0x57/0xa0
[ 4481.831282] do_syscall_64+0x38/0x90
[ 4481.831284] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 4481.831286] RIP: 0033:0x7fd270d369b4
Fixes: 2526ff21aa77 ("brcmfmac: support 4-way handshake offloading for 802.1X")
Signed-off-by: Shelley Yang <shelley.yang@infineon.com>
Acked-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Link: https://patch.msgid.link/20260525083859.581246-1-shelley.yang@infineon.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
index bb96b87b2a6e56..1fc9ecd86d5d9d 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
@@ -2146,7 +2146,7 @@ brcmf_set_key_mgmt(struct net_device *ndev, struct cfg80211_connect_params *sme)
sme->crypto.akm_suites[0]);
return -EINVAL;
}
- } else if (val & (WPA2_AUTH_PSK | WPA2_AUTH_UNSPECIFIED)) {
+ } else if (val & (WPA2_AUTH_PSK | WPA2_AUTH_UNSPECIFIED | WPA2_AUTH_1X_SHA256)) {
switch (sme->crypto.akm_suites[0]) {
case WLAN_AKM_SUITE_8021X:
val = WPA2_AUTH_UNSPECIFIED;
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 267/675] ovl: fix trusted xattr escape prefix matching
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (265 preceding siblings ...)
2026-07-30 14:09 ` [PATCH 6.18 266/675] wifi: brcmfmac: fix 802.1X-SHA256 call trace warning Greg Kroah-Hartman
@ 2026-07-30 14:09 ` Greg Kroah-Hartman
2026-07-30 14:09 ` [PATCH 6.18 268/675] drm/panel: s6e3ha8: fix unmet dependency on DRM_DISPLAY_HELPER Greg Kroah-Hartman
` (412 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:09 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Yichong Chen, Amir Goldstein,
Christian Brauner (Amutable), Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Yichong Chen <chenyichong@uniontech.com>
[ Upstream commit a8e72879cd0d8422c0b47d6d3c1802274fe73b98 ]
In the trusted.* xattr namespace, ovl_is_escaped_xattr() compares
one byte less than the escaped overlay xattr prefix length. This makes
it match "trusted.overlay.overlay" without requiring the trailing dot.
As a result, an xattr such as "trusted.overlay.overlayfoo" is
incorrectly treated as an escaped overlay xattr. This can be reproduced
by setting "trusted.overlay.overlayfoo" on a lower file and listing xattrs
through an overlay mount. listxattr() then exposes it as
"trusted.overlay.oo", and a following getxattr() on that listed name fails
with ENODATA.
Compare the full escaped prefix, including the trailing dot, so
similarly-prefixed private xattrs are not misclassified.
Fixes: dad02fad84cbc ("ovl: Support escaped overlay.* xattrs")
Signed-off-by: Yichong Chen <chenyichong@uniontech.com>
Link: https://patch.msgid.link/20260708082221.633602-1-chenyichong@uniontech.com
Reviewed-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
fs/overlayfs/xattrs.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/overlayfs/xattrs.c b/fs/overlayfs/xattrs.c
index 88055deca9360f..c86f1a6c8b937a 100644
--- a/fs/overlayfs/xattrs.c
+++ b/fs/overlayfs/xattrs.c
@@ -13,7 +13,7 @@ static bool ovl_is_escaped_xattr(struct super_block *sb, const char *name)
OVL_XATTR_ESCAPE_USER_PREFIX_LEN) == 0;
else
return strncmp(name, OVL_XATTR_ESCAPE_TRUSTED_PREFIX,
- OVL_XATTR_ESCAPE_TRUSTED_PREFIX_LEN - 1) == 0;
+ OVL_XATTR_ESCAPE_TRUSTED_PREFIX_LEN) == 0;
}
static bool ovl_is_own_xattr(struct super_block *sb, const char *name)
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 268/675] drm/panel: s6e3ha8: fix unmet dependency on DRM_DISPLAY_HELPER
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (266 preceding siblings ...)
2026-07-30 14:09 ` [PATCH 6.18 267/675] ovl: fix trusted xattr escape prefix matching Greg Kroah-Hartman
@ 2026-07-30 14:09 ` Greg Kroah-Hartman
2026-07-30 14:09 ` [PATCH 6.18 269/675] cred: add scoped_with_kernel_creds() Greg Kroah-Hartman
` (411 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:09 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Julian Braha, Neil Armstrong,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Julian Braha <julianbraha@gmail.com>
[ Upstream commit 3667bc164849fee4f1b18b182bdfe643f758ca17 ]
Currently, DRM_PANEL_SAMSUNG_S6E3HA8 selects DRM_DISPLAY_DSC_HELPER
without ensuring its dependency, DRM_DISPLAY_HELPER, is enabled,
causing an unmet dependency.
Let's select DRM_DISPLAY_HELPER as other similar options do.
This unmet dependency bug was found by kconfirm, a static analysis tool
for Kconfig.
Fixes: fd3b2c5f40a1 ("drm/panel: s6e3ha8: select CONFIG_DRM_DISPLAY_DSC_HELPER")
Signed-off-by: Julian Braha <julianbraha@gmail.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patch.msgid.link/20260712001514.2318597-1-julianbraha@gmail.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/panel/Kconfig | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
index 1516c6fa265db7..7354dc85a6aa70 100644
--- a/drivers/gpu/drm/panel/Kconfig
+++ b/drivers/gpu/drm/panel/Kconfig
@@ -814,6 +814,7 @@ config DRM_PANEL_SAMSUNG_S6E3HA8
depends on OF
depends on DRM_MIPI_DSI
depends on BACKLIGHT_CLASS_DEVICE
+ select DRM_DISPLAY_HELPER
select DRM_DISPLAY_DSC_HELPER
help
Say Y or M here if you want to enable support for the
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 269/675] cred: add scoped_with_kernel_creds()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (267 preceding siblings ...)
2026-07-30 14:09 ` [PATCH 6.18 268/675] drm/panel: s6e3ha8: fix unmet dependency on DRM_DISPLAY_HELPER Greg Kroah-Hartman
@ 2026-07-30 14:09 ` Greg Kroah-Hartman
2026-07-30 14:10 ` [PATCH 6.18 270/675] ovl: add override_creds cleanup guard extension for overlayfs Greg Kroah-Hartman
` (410 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:09 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Jens Axboe, Christian Brauner,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Christian Brauner <brauner@kernel.org>
[ Upstream commit ae40e6c65791f47c76cc14d0cce2707fe6053f72 ]
Add a new cleanup class for override creds. We can make use of this in a
bunch of places going forward.
Based on this scoped_with_kernel_creds() that can be used to temporarily
assume kernel credentials for specific tasks such as firmware loading,
or coredump socket connections. At no point will the caller interact
with the kernel credentials directly.
Link: https://patch.msgid.link/20251103-work-creds-init_cred-v1-4-cb3ec8711a6a@kernel.org
Reviewed-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Christian Brauner <brauner@kernel.org>
Stable-dep-of: a1e0eb8f55cf ("ovl: check access to copy_file_range source with src mounter creds")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
include/linux/cred.h | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/include/linux/cred.h b/include/linux/cred.h
index 89ae50ad2acea9..6225c0cef3d779 100644
--- a/include/linux/cred.h
+++ b/include/linux/cred.h
@@ -180,6 +180,14 @@ static inline const struct cred *revert_creds(const struct cred *revert_cred)
return rcu_replace_pointer(current->cred, revert_cred, 1);
}
+DEFINE_CLASS(override_creds,
+ const struct cred *,
+ revert_creds(_T),
+ override_creds(override_cred), const struct cred *override_cred)
+
+#define scoped_with_kernel_creds() \
+ scoped_class(override_creds, __UNIQUE_ID(cred), kernel_cred())
+
/**
* get_cred_many - Get references on a set of credentials
* @cred: The credentials to reference
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 270/675] ovl: add override_creds cleanup guard extension for overlayfs
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (268 preceding siblings ...)
2026-07-30 14:09 ` [PATCH 6.18 269/675] cred: add scoped_with_kernel_creds() Greg Kroah-Hartman
@ 2026-07-30 14:10 ` Greg Kroah-Hartman
2026-07-30 14:10 ` [PATCH 6.18 271/675] ovl: port ovl_copyfile() to cred guard Greg Kroah-Hartman
` (409 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:10 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Amir Goldstein, Christian Brauner,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Christian Brauner <brauner@kernel.org>
[ Upstream commit 6f5c84162a30514a795eab3495a12c19306d6f6c ]
Overlayfs plucks the relevant creds from the superblock. Extend the
override_creds cleanup class I added to override_creds_ovl which uses
the ovl_override_creds() function as initialization helper. Add
with_ovl_creds() based on this new class.
Link: https://patch.msgid.link/20251117-work-ovl-cred-guard-v4-1-b31603935724@kernel.org
Reviewed-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>
Stable-dep-of: a1e0eb8f55cf ("ovl: check access to copy_file_range source with src mounter creds")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
fs/overlayfs/overlayfs.h | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/fs/overlayfs/overlayfs.h b/fs/overlayfs/overlayfs.h
index d1eb1cbe7a4561..696b13d9e1f102 100644
--- a/fs/overlayfs/overlayfs.h
+++ b/fs/overlayfs/overlayfs.h
@@ -445,6 +445,11 @@ struct dentry *ovl_workdir(struct dentry *dentry);
const struct cred *ovl_override_creds(struct super_block *sb);
void ovl_revert_creds(const struct cred *old_cred);
+EXTEND_CLASS(override_creds, _ovl, ovl_override_creds(sb), struct super_block *sb)
+
+#define with_ovl_creds(sb) \
+ scoped_class(override_creds_ovl, __UNIQUE_ID(label), sb)
+
static inline const struct cred *ovl_creds(struct super_block *sb)
{
return OVL_FS(sb)->creator_cred;
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 271/675] ovl: port ovl_copyfile() to cred guard
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (269 preceding siblings ...)
2026-07-30 14:10 ` [PATCH 6.18 270/675] ovl: add override_creds cleanup guard extension for overlayfs Greg Kroah-Hartman
@ 2026-07-30 14:10 ` Greg Kroah-Hartman
2026-07-30 14:10 ` [PATCH 6.18 272/675] ovl: check access to copy_file_range source with src mounter creds Greg Kroah-Hartman
` (408 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:10 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Amir Goldstein, Christian Brauner,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Christian Brauner <brauner@kernel.org>
[ Upstream commit 14d35fda5b1139bacefb47c69f083fe2cfad211b ]
Use the scoped ovl cred guard.
Link: https://patch.msgid.link/20251117-work-ovl-cred-guard-v4-36-b31603935724@kernel.org
Reviewed-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>
Stable-dep-of: a1e0eb8f55cf ("ovl: check access to copy_file_range source with src mounter creds")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
fs/overlayfs/file.c | 37 ++++++++++++++++++-------------------
1 file changed, 18 insertions(+), 19 deletions(-)
diff --git a/fs/overlayfs/file.c b/fs/overlayfs/file.c
index 3fedfdddfa7584..4374fbad3fc437 100644
--- a/fs/overlayfs/file.c
+++ b/fs/overlayfs/file.c
@@ -543,7 +543,6 @@ static loff_t ovl_copyfile(struct file *file_in, loff_t pos_in,
{
struct inode *inode_out = file_inode(file_out);
struct file *realfile_in, *realfile_out;
- const struct cred *old_cred;
loff_t ret;
inode_lock(inode_out);
@@ -565,25 +564,25 @@ static loff_t ovl_copyfile(struct file *file_in, loff_t pos_in,
if (IS_ERR(realfile_in))
goto out_unlock;
- old_cred = ovl_override_creds(file_inode(file_out)->i_sb);
- switch (op) {
- case OVL_COPY:
- ret = vfs_copy_file_range(realfile_in, pos_in,
- realfile_out, pos_out, len, flags);
- break;
-
- case OVL_CLONE:
- ret = vfs_clone_file_range(realfile_in, pos_in,
- realfile_out, pos_out, len, flags);
- break;
-
- case OVL_DEDUPE:
- ret = vfs_dedupe_file_range_one(realfile_in, pos_in,
- realfile_out, pos_out, len,
- flags);
- break;
+ with_ovl_creds(file_inode(file_out)->i_sb) {
+ switch (op) {
+ case OVL_COPY:
+ ret = vfs_copy_file_range(realfile_in, pos_in,
+ realfile_out, pos_out, len, flags);
+ break;
+
+ case OVL_CLONE:
+ ret = vfs_clone_file_range(realfile_in, pos_in,
+ realfile_out, pos_out, len, flags);
+ break;
+
+ case OVL_DEDUPE:
+ ret = vfs_dedupe_file_range_one(realfile_in, pos_in,
+ realfile_out, pos_out, len,
+ flags);
+ break;
+ }
}
- ovl_revert_creds(old_cred);
/* Update size */
ovl_file_modified(file_out);
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 272/675] ovl: check access to copy_file_range source with src mounter creds
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (270 preceding siblings ...)
2026-07-30 14:10 ` [PATCH 6.18 271/675] ovl: port ovl_copyfile() to cred guard Greg Kroah-Hartman
@ 2026-07-30 14:10 ` Greg Kroah-Hartman
2026-07-30 14:10 ` [PATCH 6.18 273/675] amt: re-read skb header pointers after every pull Greg Kroah-Hartman
` (407 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:10 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Amir Goldstein,
Christian Brauner (Amutable), Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Amir Goldstein <amir73il@gmail.com>
[ Upstream commit a1e0eb8f55cfe09bb31a202a388babc411292656 ]
Commit 5dae222a5ff0c ("vfs: allow copy_file_range to copy across devices")
allowed filesystems that implement the copy_file_range() f_op to decide
if they want to access cross-sb copy from/to the same fs type.
The same commit added checks to verify same sb copy for filesystems that
implement ->copy_file_range() and do not support cross-sb copy at the
time, namely, to ceph, fuse and nfs.
The two remaining fs which implement ->copy_file_range(), cifs and
overlayfs started to support cross-sb copy from this time.
While overlayfs does support cross-sb copy when the two underlying files
are on the same base fs, the copy operation on the two real files from
two different overalyfs filesystems is performed with the mounter
creds of the destination overlayfs and the read permission access hook
for the source file was called with the wrong creds.
This could cause either deny of access to copy which would otherwise be
allowed (e.g. with splice) or allow read access to file which would
otherwise be denied.
Fix the latter case by explicitly verifying read access to source file
with the source overlayfs mounter creds.
The former case remains a quirk of cross-sb overlayfs copy, but
userspace could fall back to regular copy so no harm done.
Fixes: 5dae222a5ff0c ("vfs: allow copy_file_range to copy across devices")
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Link: https://patch.msgid.link/20260712122421.203113-1-amir73il@gmail.com
Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
fs/overlayfs/file.c | 16 +++++++++++++++-
1 file changed, 15 insertions(+), 1 deletion(-)
diff --git a/fs/overlayfs/file.c b/fs/overlayfs/file.c
index 4374fbad3fc437..a857ce377b0cfb 100644
--- a/fs/overlayfs/file.c
+++ b/fs/overlayfs/file.c
@@ -541,6 +541,7 @@ static loff_t ovl_copyfile(struct file *file_in, loff_t pos_in,
struct file *file_out, loff_t pos_out,
loff_t len, unsigned int flags, enum ovl_copyop op)
{
+ struct inode *inode_in = file_inode(file_in);
struct inode *inode_out = file_inode(file_out);
struct file *realfile_in, *realfile_out;
loff_t ret;
@@ -564,7 +565,20 @@ static loff_t ovl_copyfile(struct file *file_in, loff_t pos_in,
if (IS_ERR(realfile_in))
goto out_unlock;
- with_ovl_creds(file_inode(file_out)->i_sb) {
+ /*
+ * For cross-sb copy, vfs_copy_file_range() will verify read access with
+ * the mounter creds of the dest fs mounter, so we need to explicitly
+ * verify read access with the source mounter creds.
+ */
+ if (unlikely(inode_in->i_sb != inode_out->i_sb)) {
+ with_ovl_creds(inode_in->i_sb) {
+ ret = rw_verify_area(READ, realfile_in, &pos_in, len);
+ if (unlikely(ret))
+ goto out_unlock;
+ }
+ }
+
+ with_ovl_creds(inode_out->i_sb) {
switch (op) {
case OVL_COPY:
ret = vfs_copy_file_range(realfile_in, pos_in,
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 273/675] amt: re-read skb header pointers after every pull
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (271 preceding siblings ...)
2026-07-30 14:10 ` [PATCH 6.18 272/675] ovl: check access to copy_file_range source with src mounter creds Greg Kroah-Hartman
@ 2026-07-30 14:10 ` Greg Kroah-Hartman
2026-07-30 14:10 ` [PATCH 6.18 274/675] amt: make the head writable before rewriting the L2 header Greg Kroah-Hartman
` (406 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:10 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Michael Bommarito, Simon Horman,
Taehee Yoo, Jakub Kicinski, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Michael Bommarito <michael.bommarito@gmail.com>
[ Upstream commit 3656a79f94c471827a08f2cacce5f94ad5e52c24 ]
Several AMT receive and transmit paths cache a pointer into the skb head
(ip_hdr(), ipv6_hdr(), eth_hdr() or the AMT message header) and then call
a helper that can reallocate that head before the cached pointer is used
again. pskb_may_pull(), ip_mc_may_pull(), ipv6_mc_may_pull(),
iptunnel_pull_header(), ip_mc_check_igmp() and ipv6_mc_check_mld() can all
free the old head and move the data, so a pointer taken before the call
dangles afterwards and the later access is a use-after-free of the freed
head.
The affected sites are:
amt_rcv() caches ip_hdr() before amt_parse_type() pulls, then reads
iph->saddr.
amt_dev_xmit() caches ip_hdr()/ipv6_hdr() before ip_mc_check_igmp()/
ipv6_mc_check_mld() and pskb_may_pull(), then reads the group address.
amt_multicast_data_handler() caches eth_hdr() before pskb_may_pull(),
then writes the L2 header.
amt_membership_query_handler() caches the AMT header, the outer and
inner eth_hdr() and ip_hdr() before iptunnel_pull_header() and several
pulls, then reads and writes them.
amt_igmpv3_report_handler() and amt_mldv2_report_handler() cache
ip_hdr()/ipv6_hdr() and the current group record and read the record
count from the report header inside the record loop, across the
*_mc_may_pull() calls.
amt_update_handler() caches ip_hdr() and the AMT membership-update
header before pskb_may_pull(), iptunnel_pull_header(),
ip_mc_check_igmp() and the report handler, then reads iph->daddr and
amtmu->nonce / amtmu->response_mac.
Fix each site by either snapshotting the scalar that is used after the
pull before the first pull runs, or re-deriving the header pointer from
the skb after the last pull that can move the head. Values that are
stable across the pull (source and group address, the response MAC and
nonce, the record count, the outer source MAC) are snapshotted; pointers
that are written through or read repeatedly are re-derived.
Fixes: cbc21dc1cfe9 ("amt: add data plane of amt interface")
Signed-off-by: Michael Bommarito <michael.bommarito@gmail.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Reviewed-by: Taehee Yoo <ap420073@gmail.com>
Link: https://patch.msgid.link/20260711151934.2955226-2-michael.bommarito@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/amt.c | 79 +++++++++++++++++++++++++++++++++--------------
1 file changed, 55 insertions(+), 24 deletions(-)
diff --git a/drivers/net/amt.c b/drivers/net/amt.c
index e4d1aa26d7bbd7..76e0ab70d8273d 100644
--- a/drivers/net/amt.c
+++ b/drivers/net/amt.c
@@ -1211,7 +1211,7 @@ static netdev_tx_t amt_dev_xmit(struct sk_buff *skb, struct net_device *dev)
data = true;
}
v6 = false;
- group.ip4 = iph->daddr;
+ group.ip4 = ip_hdr(skb)->daddr;
#if IS_ENABLED(CONFIG_IPV6)
} else if (iph->version == 6) {
ip6h = ipv6_hdr(skb);
@@ -1235,7 +1235,7 @@ static netdev_tx_t amt_dev_xmit(struct sk_buff *skb, struct net_device *dev)
data = true;
}
v6 = true;
- group.ip6 = ip6h->daddr;
+ group.ip6 = ipv6_hdr(skb)->daddr;
#endif
} else {
dev->stats.tx_errors++;
@@ -1278,12 +1278,12 @@ static netdev_tx_t amt_dev_xmit(struct sk_buff *skb, struct net_device *dev)
hlist_for_each_entry_rcu(gnode, &tunnel->groups[hash],
node) {
if (!v6) {
- if (gnode->group_addr.ip4 == iph->daddr)
+ if (gnode->group_addr.ip4 == group.ip4)
goto found;
#if IS_ENABLED(CONFIG_IPV6)
} else {
if (ipv6_addr_equal(&gnode->group_addr.ip6,
- &ip6h->daddr))
+ &group.ip6))
goto found;
#endif
}
@@ -2000,14 +2000,18 @@ static void amt_igmpv3_report_handler(struct amt_dev *amt, struct sk_buff *skb,
struct igmpv3_report *ihrv3 = igmpv3_report_hdr(skb);
int len = skb_transport_offset(skb) + sizeof(*ihrv3);
void *zero_grec = (void *)&igmpv3_zero_grec;
- struct iphdr *iph = ip_hdr(skb);
struct amt_group_node *gnode;
union amt_addr group, host;
struct igmpv3_grec *grec;
+ __be32 saddr;
u16 nsrcs;
+ u16 ngrec;
int i;
- for (i = 0; i < ntohs(ihrv3->ngrec); i++) {
+ saddr = ip_hdr(skb)->saddr;
+ ngrec = ntohs(ihrv3->ngrec);
+
+ for (i = 0; i < ngrec; i++) {
len += sizeof(*grec);
if (!ip_mc_may_pull(skb, len))
break;
@@ -2019,10 +2023,13 @@ static void amt_igmpv3_report_handler(struct amt_dev *amt, struct sk_buff *skb,
if (!ip_mc_may_pull(skb, len))
break;
+ grec = (void *)(skb->data + len - sizeof(*grec) -
+ nsrcs * sizeof(__be32));
+
memset(&group, 0, sizeof(union amt_addr));
group.ip4 = grec->grec_mca;
memset(&host, 0, sizeof(union amt_addr));
- host.ip4 = iph->saddr;
+ host.ip4 = saddr;
gnode = amt_lookup_group(tunnel, &group, &host, false);
if (!gnode) {
gnode = amt_add_group(amt, tunnel, &group, &host,
@@ -2162,14 +2169,18 @@ static void amt_mldv2_report_handler(struct amt_dev *amt, struct sk_buff *skb,
struct mld2_report *mld2r = (struct mld2_report *)icmp6_hdr(skb);
int len = skb_transport_offset(skb) + sizeof(*mld2r);
void *zero_grec = (void *)&mldv2_zero_grec;
- struct ipv6hdr *ip6h = ipv6_hdr(skb);
struct amt_group_node *gnode;
union amt_addr group, host;
struct mld2_grec *grec;
+ struct in6_addr saddr;
u16 nsrcs;
+ u16 ngrec;
int i;
- for (i = 0; i < ntohs(mld2r->mld2r_ngrec); i++) {
+ saddr = ipv6_hdr(skb)->saddr;
+ ngrec = ntohs(mld2r->mld2r_ngrec);
+
+ for (i = 0; i < ngrec; i++) {
len += sizeof(*grec);
if (!ipv6_mc_may_pull(skb, len))
break;
@@ -2181,10 +2192,13 @@ static void amt_mldv2_report_handler(struct amt_dev *amt, struct sk_buff *skb,
if (!ipv6_mc_may_pull(skb, len))
break;
+ grec = (void *)(skb->data + len - sizeof(*grec) -
+ nsrcs * sizeof(struct in6_addr));
+
memset(&group, 0, sizeof(union amt_addr));
group.ip6 = grec->grec_mca;
memset(&host, 0, sizeof(union amt_addr));
- host.ip6 = ip6h->saddr;
+ host.ip6 = saddr;
gnode = amt_lookup_group(tunnel, &group, &host, true);
if (!gnode) {
gnode = amt_add_group(amt, tunnel, &group, &host,
@@ -2305,7 +2319,6 @@ static bool amt_multicast_data_handler(struct amt_dev *amt, struct sk_buff *skb)
skb_push(skb, sizeof(*eth));
skb_reset_mac_header(skb);
skb_pull(skb, sizeof(*eth));
- eth = eth_hdr(skb);
if (!pskb_may_pull(skb, sizeof(*iph)))
return true;
@@ -2315,6 +2328,7 @@ static bool amt_multicast_data_handler(struct amt_dev *amt, struct sk_buff *skb)
if (!ipv4_is_multicast(iph->daddr))
return true;
skb->protocol = htons(ETH_P_IP);
+ eth = eth_hdr(skb);
eth->h_proto = htons(ETH_P_IP);
ip_eth_mc_map(iph->daddr, eth->h_dest);
#if IS_ENABLED(CONFIG_IPV6)
@@ -2328,6 +2342,7 @@ static bool amt_multicast_data_handler(struct amt_dev *amt, struct sk_buff *skb)
if (!ipv6_addr_is_multicast(&ip6h->daddr))
return true;
skb->protocol = htons(ETH_P_IPV6);
+ eth = eth_hdr(skb);
eth->h_proto = htons(ETH_P_IPV6);
ipv6_eth_mc_map(&ip6h->daddr, eth->h_dest);
#endif
@@ -2351,10 +2366,12 @@ static bool amt_membership_query_handler(struct amt_dev *amt,
struct sk_buff *skb)
{
struct amt_header_membership_query *amtmq;
- struct igmpv3_query *ihv3;
struct ethhdr *eth, *oeth;
+ struct igmpv3_query *ihv3;
+ u8 h_source[ETH_ALEN];
struct iphdr *iph;
int hdr_size, len;
+ u64 response_mac;
hdr_size = sizeof(*amtmq) + sizeof(struct udphdr);
if (!pskb_may_pull(skb, hdr_size))
@@ -2367,6 +2384,8 @@ static bool amt_membership_query_handler(struct amt_dev *amt,
if (amtmq->nonce != amt->nonce)
return true;
+ response_mac = amtmq->response_mac;
+
hdr_size -= sizeof(*eth);
if (iptunnel_pull_header(skb, hdr_size, htons(ETH_P_TEB), false))
return true;
@@ -2376,6 +2395,7 @@ static bool amt_membership_query_handler(struct amt_dev *amt,
skb_pull(skb, sizeof(*eth));
skb_reset_network_header(skb);
eth = eth_hdr(skb);
+ ether_addr_copy(h_source, oeth->h_source);
if (!pskb_may_pull(skb, sizeof(*iph)))
return true;
@@ -2388,6 +2408,7 @@ static bool amt_membership_query_handler(struct amt_dev *amt,
sizeof(*ihv3)))
return true;
+ iph = ip_hdr(skb);
if (!ipv4_is_multicast(iph->daddr))
return true;
@@ -2395,10 +2416,11 @@ static bool amt_membership_query_handler(struct amt_dev *amt,
skb_reset_transport_header(skb);
skb_push(skb, sizeof(*iph) + AMT_IPHDR_OPTS);
WRITE_ONCE(amt->ready4, true);
- amt->mac = amtmq->response_mac;
+ amt->mac = response_mac;
amt->req_cnt = 0;
amt->qi = ihv3->qqic;
skb->protocol = htons(ETH_P_IP);
+ eth = eth_hdr(skb);
eth->h_proto = htons(ETH_P_IP);
ip_eth_mc_map(iph->daddr, eth->h_dest);
#if IS_ENABLED(CONFIG_IPV6)
@@ -2421,10 +2443,11 @@ static bool amt_membership_query_handler(struct amt_dev *amt,
skb_reset_transport_header(skb);
skb_push(skb, sizeof(*ip6h) + AMT_IP6HDR_OPTS);
WRITE_ONCE(amt->ready6, true);
- amt->mac = amtmq->response_mac;
+ amt->mac = response_mac;
amt->req_cnt = 0;
amt->qi = mld2q->mld2q_qqic;
skb->protocol = htons(ETH_P_IPV6);
+ eth = eth_hdr(skb);
eth->h_proto = htons(ETH_P_IPV6);
ipv6_eth_mc_map(&ip6h->daddr, eth->h_dest);
#endif
@@ -2432,7 +2455,7 @@ static bool amt_membership_query_handler(struct amt_dev *amt,
return true;
}
- ether_addr_copy(eth->h_source, oeth->h_source);
+ ether_addr_copy(eth->h_source, h_source);
skb->pkt_type = PACKET_MULTICAST;
skb->ip_summed = CHECKSUM_NONE;
len = skb->len;
@@ -2455,8 +2478,11 @@ static bool amt_update_handler(struct amt_dev *amt, struct sk_buff *skb)
struct ethhdr *eth;
struct iphdr *iph;
int len, hdr_size;
+ u64 response_mac;
+ __be32 saddr;
+ __be32 nonce;
- iph = ip_hdr(skb);
+ saddr = ip_hdr(skb)->saddr;
hdr_size = sizeof(*amtmu) + sizeof(struct udphdr);
if (!pskb_may_pull(skb, hdr_size))
@@ -2466,15 +2492,18 @@ static bool amt_update_handler(struct amt_dev *amt, struct sk_buff *skb)
if (amtmu->reserved || amtmu->version)
return true;
+ nonce = amtmu->nonce;
+ response_mac = amtmu->response_mac;
+
if (iptunnel_pull_header(skb, hdr_size, skb->protocol, false))
return true;
skb_reset_network_header(skb);
list_for_each_entry_rcu(tunnel, &amt->tunnel_list, list) {
- if (tunnel->ip4 == iph->saddr) {
- if ((amtmu->nonce == tunnel->nonce &&
- amtmu->response_mac == tunnel->mac)) {
+ if (tunnel->ip4 == saddr) {
+ if ((nonce == tunnel->nonce &&
+ response_mac == tunnel->mac)) {
mod_delayed_work(amt_wq, &tunnel->gc_wq,
msecs_to_jiffies(amt_gmi(amt))
* 3);
@@ -2508,6 +2537,7 @@ static bool amt_update_handler(struct amt_dev *amt, struct sk_buff *skb)
eth = eth_hdr(skb);
skb->protocol = htons(ETH_P_IP);
eth->h_proto = htons(ETH_P_IP);
+ iph = ip_hdr(skb);
ip_eth_mc_map(iph->daddr, eth->h_dest);
#if IS_ENABLED(CONFIG_IPV6)
} else if (iph->version == 6) {
@@ -2527,6 +2557,7 @@ static bool amt_update_handler(struct amt_dev *amt, struct sk_buff *skb)
eth = eth_hdr(skb);
skb->protocol = htons(ETH_P_IPV6);
eth->h_proto = htons(ETH_P_IPV6);
+ ip6h = ipv6_hdr(skb);
ipv6_eth_mc_map(&ip6h->daddr, eth->h_dest);
#endif
} else {
@@ -2772,7 +2803,7 @@ static void amt_gw_rcv(struct amt_dev *amt, struct sk_buff *skb)
static int amt_rcv(struct sock *sk, struct sk_buff *skb)
{
struct amt_dev *amt;
- struct iphdr *iph;
+ __be32 saddr;
int type;
bool err;
@@ -2785,7 +2816,7 @@ static int amt_rcv(struct sock *sk, struct sk_buff *skb)
}
skb->dev = amt->dev;
- iph = ip_hdr(skb);
+ saddr = ip_hdr(skb)->saddr;
type = amt_parse_type(skb);
if (type == -1) {
err = true;
@@ -2795,7 +2826,7 @@ static int amt_rcv(struct sock *sk, struct sk_buff *skb)
if (amt->mode == AMT_MODE_GATEWAY) {
switch (type) {
case AMT_MSG_ADVERTISEMENT:
- if (iph->saddr != amt->discovery_ip) {
+ if (saddr != amt->discovery_ip) {
netdev_dbg(amt->dev, "Invalid Relay IP\n");
err = true;
goto drop;
@@ -2807,7 +2838,7 @@ static int amt_rcv(struct sock *sk, struct sk_buff *skb)
}
goto out;
case AMT_MSG_MULTICAST_DATA:
- if (iph->saddr != amt->remote_ip) {
+ if (saddr != amt->remote_ip) {
netdev_dbg(amt->dev, "Invalid Relay IP\n");
err = true;
goto drop;
@@ -2818,7 +2849,7 @@ static int amt_rcv(struct sock *sk, struct sk_buff *skb)
else
goto out;
case AMT_MSG_MEMBERSHIP_QUERY:
- if (iph->saddr != amt->remote_ip) {
+ if (saddr != amt->remote_ip) {
netdev_dbg(amt->dev, "Invalid Relay IP\n");
err = true;
goto drop;
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 274/675] amt: make the head writable before rewriting the L2 header
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (272 preceding siblings ...)
2026-07-30 14:10 ` [PATCH 6.18 273/675] amt: re-read skb header pointers after every pull Greg Kroah-Hartman
@ 2026-07-30 14:10 ` Greg Kroah-Hartman
2026-07-30 14:10 ` [PATCH 6.18 275/675] net: bridge: vlan: fix vlan range dumps starting with pvid Greg Kroah-Hartman
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From: Greg Kroah-Hartman @ 2026-07-30 14:10 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Michael Bommarito, Simon Horman,
Taehee Yoo, Jakub Kicinski, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Michael Bommarito <michael.bommarito@gmail.com>
[ Upstream commit 53969d704fa5b7c1751e277fac96bfc22b435eac ]
amt_multicast_data_handler(), amt_membership_query_handler() and
amt_update_handler() rewrite the ethernet header of the decapsulated skb
in place (eth->h_proto, eth->h_dest and, for the query, also
eth->h_source) before handing it up the stack. The skb head may be
shared, for example when a packet tap has cloned it on the underlay
interface, so writing through it corrupts the other reader's copy.
Call skb_cow_head() before the rewrite so the head is private. It is
placed before the pointers into the head are (re-)derived, so a
reallocation caused by the copy is picked up by those derivations.
Fixes: cbc21dc1cfe9 ("amt: add data plane of amt interface")
Signed-off-by: Michael Bommarito <michael.bommarito@gmail.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Reviewed-by: Taehee Yoo <ap420073@gmail.com>
Link: https://patch.msgid.link/20260711151934.2955226-3-michael.bommarito@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/amt.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/net/amt.c b/drivers/net/amt.c
index 76e0ab70d8273d..cddcad172bbce0 100644
--- a/drivers/net/amt.c
+++ b/drivers/net/amt.c
@@ -2320,6 +2320,9 @@ static bool amt_multicast_data_handler(struct amt_dev *amt, struct sk_buff *skb)
skb_reset_mac_header(skb);
skb_pull(skb, sizeof(*eth));
+ if (skb_cow_head(skb, 0))
+ return true;
+
if (!pskb_may_pull(skb, sizeof(*iph)))
return true;
iph = ip_hdr(skb);
@@ -2396,6 +2399,8 @@ static bool amt_membership_query_handler(struct amt_dev *amt,
skb_reset_network_header(skb);
eth = eth_hdr(skb);
ether_addr_copy(h_source, oeth->h_source);
+ if (skb_cow_head(skb, 0))
+ return true;
if (!pskb_may_pull(skb, sizeof(*iph)))
return true;
@@ -2521,6 +2526,9 @@ static bool amt_update_handler(struct amt_dev *amt, struct sk_buff *skb)
if (!pskb_may_pull(skb, sizeof(*iph)))
return true;
+ if (skb_cow_head(skb, 0))
+ return true;
+
iph = ip_hdr(skb);
if (iph->version == 4) {
if (ip_mc_check_igmp(skb)) {
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 275/675] net: bridge: vlan: fix vlan range dumps starting with pvid
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (273 preceding siblings ...)
2026-07-30 14:10 ` [PATCH 6.18 274/675] amt: make the head writable before rewriting the L2 header Greg Kroah-Hartman
@ 2026-07-30 14:10 ` Greg Kroah-Hartman
2026-07-30 14:10 ` [PATCH 6.18 276/675] net: hsr: fix memory leak on slave unregistration by removing synced VLANs Greg Kroah-Hartman
` (404 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:10 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Nikolay Aleksandrov, Ido Schimmel,
Jakub Kicinski, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Nikolay Aleksandrov <razor@blackwall.org>
[ Upstream commit 43171c97e4714bf601b468401b37732244639c21 ]
There is a bug in all range dumps that rely on br_vlan_can_enter_range()
when the PVID is a range starting VLAN, all following VLANs that match
its flags can enter the range, but when the range is filled in only the
PVID VLAN is dumped and the rest of the range is discarded because
br_vlan_fill_vids() checks for the PVID flag. Since the PVID VLAN can
be only one, we need to break ranges around it, the best way to do that
consistently for all is to alter br_vlan_can_enter_range() to take into
account the PVID and return false to break the range when it's matched.
Before the fix:
$ ip l add br0 type bridge vlan_filtering 1
$ ip l add dumdum type dummy
$ ip l set dumdum master br0
$ ip l set br0 up
$ ip l set dumdum up
$ bridge vlan add dev dumdum vid 1 pvid untagged master
$ bridge vlan add dev dumdum vid 2 untagged master
$ bridge vlan show dev dumdum # use legacy dump to show all vlans
port vlan-id
dumdum 1 PVID Egress Untagged
2 Egress Untagged
$ bridge -d vlan show dev dumdum # use the new dump (RTM_GETVLAN)
port vlan-id
dumdum 1 PVID Egress Untagged
state forwarding mcast_router 1
VLAN 2 is missing, and if there are more matching VLANs afterwards
they'd be missing too.
After the fix:
[ same setup steps ]
$ bridge vlan show dev dumdum
port vlan-id
dumdum 1 PVID Egress Untagged
2 Egress Untagged
$ bridge -d vlan show dev dumdum # use the new dump (RTM_GETVLAN)
port vlan-id
dumdum 1 PVID Egress Untagged
state forwarding mcast_router 1
2 Egress Untagged
state forwarding mcast_router 1
Fixes: 0ab558795184 ("net: bridge: vlan: add rtm range support")
Signed-off-by: Nikolay Aleksandrov <razor@blackwall.org>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Link: https://patch.msgid.link/20260721140922.682265-2-razor@blackwall.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/bridge/br_netlink_tunnel.c | 3 ++-
net/bridge/br_private.h | 6 ++++--
net/bridge/br_vlan.c | 10 ++++++----
net/bridge/br_vlan_options.c | 3 +--
4 files changed, 13 insertions(+), 9 deletions(-)
diff --git a/net/bridge/br_netlink_tunnel.c b/net/bridge/br_netlink_tunnel.c
index 71a12da30004c7..a713668ea34f0e 100644
--- a/net/bridge/br_netlink_tunnel.c
+++ b/net/bridge/br_netlink_tunnel.c
@@ -271,7 +271,8 @@ static void __vlan_tunnel_handle_range(const struct net_bridge_port *p,
if (!*v_start)
goto out_init;
- if (v && curr_change && br_vlan_can_enter_range(v, *v_end)) {
+ if (v && curr_change &&
+ br_vlan_can_enter_range(v, *v_end, br_get_pvid(vg))) {
*v_end = v;
return;
}
diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h
index b9b2981c484149..2b451f3f72a6ad 100644
--- a/net/bridge/br_private.h
+++ b/net/bridge/br_private.h
@@ -1613,7 +1613,8 @@ void br_vlan_notify(const struct net_bridge *br,
u16 vid, u16 vid_range,
int cmd);
bool br_vlan_can_enter_range(const struct net_bridge_vlan *v_curr,
- const struct net_bridge_vlan *range_end);
+ const struct net_bridge_vlan *range_end,
+ u16 pvid);
void br_vlan_fill_forward_path_pvid(struct net_bridge *br,
struct net_device_path_ctx *ctx,
@@ -1860,7 +1861,8 @@ static inline void br_vlan_notify(const struct net_bridge *br,
}
static inline bool br_vlan_can_enter_range(const struct net_bridge_vlan *v_curr,
- const struct net_bridge_vlan *range_end)
+ const struct net_bridge_vlan *range_end,
+ u16 pvid)
{
return true;
}
diff --git a/net/bridge/br_vlan.c b/net/bridge/br_vlan.c
index ce72b837ff8ee9..a4ba725ad1dff4 100644
--- a/net/bridge/br_vlan.c
+++ b/net/bridge/br_vlan.c
@@ -1977,9 +1977,11 @@ void br_vlan_notify(const struct net_bridge *br,
/* check if v_curr can enter a range ending in range_end */
bool br_vlan_can_enter_range(const struct net_bridge_vlan *v_curr,
- const struct net_bridge_vlan *range_end)
+ const struct net_bridge_vlan *range_end,
+ u16 pvid)
{
- return v_curr->vid - range_end->vid == 1 &&
+ return v_curr->vid != pvid && range_end->vid != pvid &&
+ v_curr->vid - range_end->vid == 1 &&
range_end->flags == v_curr->flags &&
br_vlan_opts_eq_range(v_curr, range_end);
}
@@ -2061,8 +2063,8 @@ static int br_vlan_dump_dev(const struct net_device *dev,
idx += range_end->vid - range_start->vid + 1;
range_start = v;
- } else if (dump_stats || v->vid == pvid ||
- !br_vlan_can_enter_range(v, range_end)) {
+ } else if (dump_stats ||
+ !br_vlan_can_enter_range(v, range_end, pvid)) {
u16 vlan_flags = br_vlan_flags(range_start, pvid);
if (!br_vlan_fill_vids(skb, range_start->vid,
diff --git a/net/bridge/br_vlan_options.c b/net/bridge/br_vlan_options.c
index 8fa89b04ee942d..4a736e005bad7e 100644
--- a/net/bridge/br_vlan_options.c
+++ b/net/bridge/br_vlan_options.c
@@ -310,8 +310,7 @@ int br_vlan_process_options(const struct net_bridge *br,
continue;
}
- if (v->vid == pvid ||
- !br_vlan_can_enter_range(v, curr_end)) {
+ if (!br_vlan_can_enter_range(v, curr_end, pvid)) {
br_vlan_notify(br, p, curr_start->vid,
curr_end->vid, RTM_NEWVLAN);
curr_start = v;
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 276/675] net: hsr: fix memory leak on slave unregistration by removing synced VLANs
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (274 preceding siblings ...)
2026-07-30 14:10 ` [PATCH 6.18 275/675] net: bridge: vlan: fix vlan range dumps starting with pvid Greg Kroah-Hartman
@ 2026-07-30 14:10 ` Greg Kroah-Hartman
2026-07-30 14:10 ` [PATCH 6.18 277/675] net: dpaa: fix mode setting Greg Kroah-Hartman
` (403 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:10 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, syzbot+456957213f32970c0762,
Eric Dumazet, Fernando Fernandez Mancera, Felix Maurer,
Jakub Kicinski, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Eric Dumazet <edumazet@google.com>
[ Upstream commit dcf15eaf5641812f1cfc5e96537380132a7da89d ]
When an HSR master device is brought UP, it auto-adds VLAN 0 via
vlan_vid0_add(), which propagates VID 0 to its slave devices (slave A and B).
If a slave device is later unregistered while HSR is active (e.g., during
netns cleanup or interface destruction), hsr_del_port() is called to
detach the slave port from the HSR master. However, hsr_del_port() currently
does not delete the VLAN IDs that were synced to the slave device by HSR.
As a result, the slave device retains a refcount on VID 0 (and any other
synced VLANs). When the slave device is destroyed, its vlan_info /
vlan_vid_info structure remains allocated, leading to a memory leak.
Fix this by calling vlan_vids_del_by_dev(port->dev, master->dev) in
hsr_del_port() before unlinking slave A or slave B ports, matching the
propagation logic in hsr_ndo_vlan_rx_add_vid() / hsr_ndo_vlan_rx_kill_vid()
and the cleanup behavior in bonding and team drivers.
Fixes: 1a8a63a5305e ("net: hsr: Add VLAN CTAG filter support")
Reported-by: syzbot+456957213f32970c0762@syzkaller.appspotmail.com
Closes: https://lore.kernel.org/netdev/6a4cb6ca.57639fcc.86d58.000b.GAE@google.com/T/#u
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Fernando Fernandez Mancera <fmancera@suse.de>
Reviewed-by: Felix Maurer <fmaurer@redhat.com>
Link: https://patch.msgid.link/20260721101240.995597-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/hsr/hsr_slave.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/net/hsr/hsr_slave.c b/net/hsr/hsr_slave.c
index afe06ba00ea447..474f44f1ee88ce 100644
--- a/net/hsr/hsr_slave.c
+++ b/net/hsr/hsr_slave.c
@@ -242,6 +242,8 @@ void hsr_del_port(struct hsr_port *port)
netdev_rx_handler_unregister(port->dev);
if (!port->hsr->fwd_offloaded)
dev_set_promiscuity(port->dev, -1);
+ if (port->type == HSR_PT_SLAVE_A || port->type == HSR_PT_SLAVE_B)
+ vlan_vids_del_by_dev(port->dev, master->dev);
netdev_upper_dev_unlink(port->dev, master->dev);
eth_hw_addr_set(port->dev, port->original_macaddress);
}
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 277/675] net: dpaa: fix mode setting
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (275 preceding siblings ...)
2026-07-30 14:10 ` [PATCH 6.18 276/675] net: hsr: fix memory leak on slave unregistration by removing synced VLANs Greg Kroah-Hartman
@ 2026-07-30 14:10 ` Greg Kroah-Hartman
2026-07-30 14:10 ` [PATCH 6.18 278/675] sctp: auth: verify auth requirement when auth_chunk is NULL Greg Kroah-Hartman
` (402 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:10 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Sean Anderson, Michael Walle,
Jakub Kicinski, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Michael Walle <mwalle@kernel.org>
[ Upstream commit da2c6bcc5e30b1496ac587785dcacf6e849eb6ef ]
Before converting to the phylink interface, the init function would have
set a non-reserved I/F mode in the maccfg2 register. After converting to
phylink, 0 is written as mode, which is a reserved value (although it's
the hardware default). Without a valid mode, a SGMII link is never
established between the MAC and the PHY and thus .link_up() is never
called which could set the correct mode according to the actual speed.
Fix it by setting the maximum speed of the phy_interface_t in use in
.mac_config() - just like the driver did before the phylink conversion.
Fixes: 5d93cfcf7360 ("net: dpaa: Convert to phylink")
Suggested-by: Sean Anderson <sean.anderson@linux.dev>
Signed-off-by: Michael Walle <mwalle@kernel.org>
Reviewed-by: Sean Anderson <sean.anderson@linux.dev>
Reviewed-by: Sean Anderson <sean.anderson@linux.dev>
Link: https://patch.msgid.link/20260717132401.2653252-1-mwalle@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
.../net/ethernet/freescale/fman/fman_dtsec.c | 17 ++++++++++++-----
1 file changed, 12 insertions(+), 5 deletions(-)
diff --git a/drivers/net/ethernet/freescale/fman/fman_dtsec.c b/drivers/net/ethernet/freescale/fman/fman_dtsec.c
index 51402dff72c5ff..52f13b61bc6993 100644
--- a/drivers/net/ethernet/freescale/fman/fman_dtsec.c
+++ b/drivers/net/ethernet/freescale/fman/fman_dtsec.c
@@ -900,22 +900,28 @@ static void dtsec_mac_config(struct phylink_config *config, unsigned int mode,
{
struct mac_device *mac_dev = fman_config_to_mac(config);
struct dtsec_regs __iomem *regs = mac_dev->fman_mac->regs;
- u32 tmp;
+ u32 ecntrl, maccfg2;
+
+ maccfg2 = ioread32be(®s->maccfg2);
+ maccfg2 &= ~(MACCFG2_NIBBLE_MODE | MACCFG2_BYTE_MODE);
switch (state->interface) {
case PHY_INTERFACE_MODE_RMII:
- tmp = DTSEC_ECNTRL_RMM;
+ ecntrl = DTSEC_ECNTRL_RMM;
+ maccfg2 |= MACCFG2_NIBBLE_MODE;
break;
case PHY_INTERFACE_MODE_RGMII:
case PHY_INTERFACE_MODE_RGMII_ID:
case PHY_INTERFACE_MODE_RGMII_RXID:
case PHY_INTERFACE_MODE_RGMII_TXID:
- tmp = DTSEC_ECNTRL_GMIIM | DTSEC_ECNTRL_RPM;
+ ecntrl = DTSEC_ECNTRL_GMIIM | DTSEC_ECNTRL_RPM;
+ maccfg2 |= MACCFG2_BYTE_MODE;
break;
case PHY_INTERFACE_MODE_SGMII:
case PHY_INTERFACE_MODE_1000BASEX:
case PHY_INTERFACE_MODE_2500BASEX:
- tmp = DTSEC_ECNTRL_TBIM | DTSEC_ECNTRL_SGMIIM;
+ ecntrl = DTSEC_ECNTRL_TBIM | DTSEC_ECNTRL_SGMIIM;
+ maccfg2 |= MACCFG2_BYTE_MODE;
break;
default:
dev_warn(mac_dev->dev, "cannot configure dTSEC for %s\n",
@@ -923,7 +929,8 @@ static void dtsec_mac_config(struct phylink_config *config, unsigned int mode,
return;
}
- iowrite32be(tmp, ®s->ecntrl);
+ iowrite32be(ecntrl, ®s->ecntrl);
+ iowrite32be(maccfg2, ®s->maccfg2);
}
static void dtsec_link_up(struct phylink_config *config, struct phy_device *phy,
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 278/675] sctp: auth: verify auth requirement when auth_chunk is NULL
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (276 preceding siblings ...)
2026-07-30 14:10 ` [PATCH 6.18 277/675] net: dpaa: fix mode setting Greg Kroah-Hartman
@ 2026-07-30 14:10 ` Greg Kroah-Hartman
2026-07-30 14:10 ` [PATCH 6.18 279/675] vmxnet3: fix BUG_ON in vmxnet3_get_hdr_len() for Geneve packets Greg Kroah-Hartman
` (401 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:10 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Qing Luo, Xin Long, Jakub Kicinski,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Qing Luo <luoqing@kylinos.cn>
[ Upstream commit 8e04823c120b376ef7dab14b60ebf6823aa16c14 ]
sctp_auth_chunk_verify() returns true unconditionally when
chunk->auth_chunk is NULL, silently skipping authentication.
This is incorrect when:
1. skb_clone() failed in the BH receive path, leaving auth_chunk
NULL. In sctp_endpoint_bh_rcv() asoc is NULL for new
connections, so the early sctp_auth_recv_cid() check cannot
catch this.
2. No AUTH chunk precedes COOKIE-ECHO, so skb_clone() is never
called and auth_chunk remains NULL.
Fix by checking sctp_auth_recv_cid() when auth_chunk is NULL:
if authentication is required, return false to drop the chunk;
otherwise continue normally.
Fixes: bbd0d59809f9 ("[SCTP]: Implement the receive and verification of AUTH chunk")
Signed-off-by: Qing Luo <luoqing@kylinos.cn>
Acked-by: Xin Long <lucien.xin@gmail.com>
Link: https://patch.msgid.link/20260721015532.120157-2-l1138897701@163.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/sctp/sm_statefuns.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/sctp/sm_statefuns.c b/net/sctp/sm_statefuns.c
index abfd72d1f20c64..4b8d48b6706c85 100644
--- a/net/sctp/sm_statefuns.c
+++ b/net/sctp/sm_statefuns.c
@@ -641,7 +641,7 @@ static bool sctp_auth_chunk_verify(struct net *net, struct sctp_chunk *chunk,
struct sctp_chunk auth;
if (!chunk->auth_chunk)
- return true;
+ return !sctp_auth_recv_cid(chunk->chunk_hdr->type, asoc);
/* SCTP-AUTH: auth_chunk pointer is only set when the cookie-echo
* is supposed to be authenticated and we have to do delayed
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 279/675] vmxnet3: fix BUG_ON in vmxnet3_get_hdr_len() for Geneve packets
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (277 preceding siblings ...)
2026-07-30 14:10 ` [PATCH 6.18 278/675] sctp: auth: verify auth requirement when auth_chunk is NULL Greg Kroah-Hartman
@ 2026-07-30 14:10 ` Greg Kroah-Hartman
2026-07-30 14:10 ` [PATCH 6.18 280/675] drm/xe/i2c: Allow per domain unique id Greg Kroah-Hartman
` (400 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:10 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Harshaka Narayana, Ronak Doshi,
Sankararaman Jayaraman, Simon Horman, Jakub Kicinski, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Harshaka Narayana <harshaka.narayana@broadcom.com>
[ Upstream commit 34a71f5361fc3adb5b7138da78750b0d535a8252 ]
vmxnet3_get_hdr_len() assumes gdesc->rcd.v4/v6/tcp always describe the
outer header, but for a Geneve-encapsulated packet the device can set
them based on the inner header instead, signalled by the
VMXNET3_RCD_HDR_INNER_SHIFT bit in the completion descriptor. Since the
function never skips the outer encapsulation, this mismatch triggers:
- BUG_ON(hdr.ipv4->protocol != IPPROTO_TCP), because the outer
protocol is UDP (Geneve), not TCP.
- BUG_ON(hdr.eth->h_proto != ...), when the tunnel's outer and inner
IP versions differ (e.g. outer IPv6/inner IPv4 or vice versa).
Check VMXNET3_RCD_HDR_INNER_SHIFT up front and bail out, since the
function cannot locate the inner header it would need to parse. Also
convert the remaining BUG_ON()s in this function to return 0
defensively.
Fixes: 45dac1d6ea04 ("vmxnet3: Changes for vmxnet3 adapter version 2 (fwd)")
Signed-off-by: Harshaka Narayana <harshaka.narayana@broadcom.com>
Reviewed-by: Ronak Doshi <ronak.doshi@broadcom.com>
Reviewed-by: Sankararaman Jayaraman <sankararaman.jayaraman@broadcom.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20260713140915.3381715-1-harshaka.narayana@broadcom.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/vmxnet3/vmxnet3_drv.c | 22 ++++++++++++++++------
1 file changed, 16 insertions(+), 6 deletions(-)
diff --git a/drivers/net/vmxnet3/vmxnet3_drv.c b/drivers/net/vmxnet3/vmxnet3_drv.c
index 0572f6a9bdb628..679208d587f853 100644
--- a/drivers/net/vmxnet3/vmxnet3_drv.c
+++ b/drivers/net/vmxnet3/vmxnet3_drv.c
@@ -1530,7 +1530,11 @@ vmxnet3_get_hdr_len(struct vmxnet3_adapter *adapter, struct sk_buff *skb,
struct ipv6hdr *ipv6;
struct tcphdr *tcp;
} hdr;
- BUG_ON(gdesc->rcd.tcp == 0);
+
+ /* v4/v6/tcp then describe the inner header, which we can't locate. */
+ if ((le32_to_cpu(gdesc->dword[0]) & (1UL << VMXNET3_RCD_HDR_INNER_SHIFT)) ||
+ gdesc->rcd.tcp == 0)
+ return 0;
maplen = skb_headlen(skb);
if (unlikely(sizeof(struct iphdr) + sizeof(struct tcphdr) > maplen))
@@ -1544,15 +1548,21 @@ vmxnet3_get_hdr_len(struct vmxnet3_adapter *adapter, struct sk_buff *skb,
hdr.eth = eth_hdr(skb);
if (gdesc->rcd.v4) {
- BUG_ON(hdr.eth->h_proto != htons(ETH_P_IP) &&
- hdr.veth->h_vlan_encapsulated_proto != htons(ETH_P_IP));
+ if (hdr.eth->h_proto != htons(ETH_P_IP) &&
+ hdr.veth->h_vlan_encapsulated_proto != htons(ETH_P_IP))
+ return 0;
+
hdr.ptr += hlen;
- BUG_ON(hdr.ipv4->protocol != IPPROTO_TCP);
+ if (hdr.ipv4->protocol != IPPROTO_TCP)
+ return 0;
+
hlen = hdr.ipv4->ihl << 2;
hdr.ptr += hdr.ipv4->ihl << 2;
} else if (gdesc->rcd.v6) {
- BUG_ON(hdr.eth->h_proto != htons(ETH_P_IPV6) &&
- hdr.veth->h_vlan_encapsulated_proto != htons(ETH_P_IPV6));
+ if (hdr.eth->h_proto != htons(ETH_P_IPV6) &&
+ hdr.veth->h_vlan_encapsulated_proto != htons(ETH_P_IPV6))
+ return 0;
+
hdr.ptr += hlen;
/* Use an estimated value, since we also need to handle
* TSO case.
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 280/675] drm/xe/i2c: Allow per domain unique id
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (278 preceding siblings ...)
2026-07-30 14:10 ` [PATCH 6.18 279/675] vmxnet3: fix BUG_ON in vmxnet3_get_hdr_len() for Geneve packets Greg Kroah-Hartman
@ 2026-07-30 14:10 ` Greg Kroah-Hartman
2026-07-30 14:10 ` [PATCH 6.18 281/675] drm/xe/vm: Fix SVM leak on resv obj alloc failure in xe_vm_create() Greg Kroah-Hartman
` (399 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:10 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Raag Jadav, Heikki Krogerus,
Matt Roper, Thomas Hellström, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Raag Jadav <raag.jadav@intel.com>
[ Upstream commit 5d8ed6b64220ad629aade5f174e3f690c37435f9 ]
PCI bus, device and function can be same for devices existing across
different domains. Allow per domain unique identifier while registering
platform device to prevent name conflict.
Fixes: f0e53aadd702 ("drm/xe: Support for I2C attached MCUs")
Signed-off-by: Raag Jadav <raag.jadav@intel.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://patch.msgid.link/20260721113438.651100-1-raag.jadav@intel.com
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
(cherry picked from commit a79f6abc8b516b5bd906e2eca8121e3549ee163f)
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/xe/xe_i2c.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/xe/xe_i2c.c b/drivers/gpu/drm/xe/xe_i2c.c
index 48dfcb41fa08c1..2788dc6510d6ac 100644
--- a/drivers/gpu/drm/xe/xe_i2c.c
+++ b/drivers/gpu/drm/xe/xe_i2c.c
@@ -94,18 +94,21 @@ static int xe_i2c_register_adapter(struct xe_i2c *i2c)
struct platform_device *pdev;
struct fwnode_handle *fwnode;
int ret;
+ u32 id;
fwnode = fwnode_create_software_node(xe_i2c_adapter_properties, NULL);
if (IS_ERR(fwnode))
return PTR_ERR(fwnode);
+ id = (pci_domain_nr(pci->bus) << 16) | pci_dev_id(pci);
+
/*
* Not using platform_device_register_full() here because we don't have
* a handle to the platform_device before it returns. xe_i2c_notifier()
* uses that handle, but it may be called before
* platform_device_register_full() is done.
*/
- pdev = platform_device_alloc(adapter_name, pci_dev_id(pci));
+ pdev = platform_device_alloc(adapter_name, id);
if (!pdev) {
ret = -ENOMEM;
goto err_fwnode_remove;
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 281/675] drm/xe/vm: Fix SVM leak on resv obj alloc failure in xe_vm_create()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (279 preceding siblings ...)
2026-07-30 14:10 ` [PATCH 6.18 280/675] drm/xe/i2c: Allow per domain unique id Greg Kroah-Hartman
@ 2026-07-30 14:10 ` Greg Kroah-Hartman
2026-07-30 14:10 ` [PATCH 6.18 282/675] iomap: correct the range of a partial dirty clear Greg Kroah-Hartman
` (398 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:10 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Matthew Auld, Matthew Brost,
Shuicheng Lin, Thomas Hellström, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Shuicheng Lin <shuicheng.lin@intel.com>
[ Upstream commit d2c6800ad1802bed72a6de1416536737f114f1d6 ]
Commit 9e9787414882 ("drm/xe/userptr: replace xe_hmm with gpusvm") made
xe_svm_init() unconditional in xe_vm_create() and extended it to also
initialize a "simple" gpusvm state for non-fault-mode VMs. The matching
xe_svm_fini() call in xe_vm_close_and_put() was updated to run
unconditionally, but the error unwind path in xe_vm_create() was not.
On the drm_gpuvm_resv_object_alloc() failure path, xe_svm_init() has
already succeeded but xe_svm_fini() is only called when
XE_VM_FLAG_FAULT_MODE is set. For non-fault-mode VMs this leaves
vm->svm.gpusvm partially initialized and leaks the resources allocated
by drm_gpusvm_init().
For fault-mode VMs, xe_svm_init() additionally acquires the pagemap
owner via drm_pagemap_acquire_owner() and the pagemaps via
xe_svm_get_pagemaps(). Those resources are released by xe_svm_close(),
not xe_svm_fini(). On the same error path, xe_svm_close() is not
called either, so fault-mode VMs leak the pagemap owner and pagemaps.
Fix both leaks:
- Call xe_svm_fini() unconditionally on the err_svm_fini path, matching
the unconditional xe_svm_init() call. Move the vm->size = 0
assignment out of the conditional so the xe_vm_is_closed() assert in
xe_svm_fini() (and xe_svm_close()) holds for both modes.
- Call xe_svm_close() for fault-mode VMs before xe_svm_fini(), matching
the ordering used in xe_vm_close_and_put().
Fixes: 9e9787414882 ("drm/xe/userptr: replace xe_hmm with gpusvm")
Cc: Matthew Auld <matthew.auld@intel.com>
Assisted-by: Claude:claude-opus-4.7
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Link: https://patch.msgid.link/20260721205516.4058959-2-shuicheng.lin@intel.com
Signed-off-by: Shuicheng Lin <shuicheng.lin@intel.com>
(cherry picked from commit ca2a3587d577ba764e0fe628fb676244fc33ddd4)
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/xe/xe_vm.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/xe/xe_vm.c b/drivers/gpu/drm/xe/xe_vm.c
index 8f7b8f2da06bac..b00da90e399135 100644
--- a/drivers/gpu/drm/xe/xe_vm.c
+++ b/drivers/gpu/drm/xe/xe_vm.c
@@ -1626,10 +1626,10 @@ struct xe_vm *xe_vm_create(struct xe_device *xe, u32 flags, struct xe_file *xef)
return ERR_PTR(err);
err_svm_fini:
- if (flags & XE_VM_FLAG_FAULT_MODE) {
- vm->size = 0; /* close the vm */
- xe_svm_fini(vm);
- }
+ vm->size = 0; /* close the vm */
+ if (flags & XE_VM_FLAG_FAULT_MODE)
+ xe_svm_close(vm);
+ xe_svm_fini(vm);
err_no_resv:
mutex_destroy(&vm->snap_mutex);
for_each_tile(tile, xe, id)
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 282/675] iomap: correct the range of a partial dirty clear
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (280 preceding siblings ...)
2026-07-30 14:10 ` [PATCH 6.18 281/675] drm/xe/vm: Fix SVM leak on resv obj alloc failure in xe_vm_create() Greg Kroah-Hartman
@ 2026-07-30 14:10 ` Greg Kroah-Hartman
2026-07-30 14:10 ` [PATCH 6.18 283/675] tipc: fix u16 MTU truncation in media and bearer MTU validation Greg Kroah-Hartman
` (397 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:10 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Zhang Yi, Joanne Koong,
Darrick J. Wong, Christoph Hellwig, Christian Brauner (Amutable),
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Zhang Yi <yi.zhang@huawei.com>
[ Upstream commit 88c26515313169806a412a362b32a1eca53d21bd ]
The block range calculation in ifs_clear_range_dirty() is incorrect when
partially clearing a range in a folio. We cannot clear the dirty bit of
the first block or the last block if the start or end offset is not
blocksize-aligned. This has not yet caused any issues since we always
clear a whole folio in iomap_writeback_folio().
Fix this by rounding up the first block to blocksize alignment, and
calculate the last block by rounding down (using truncation). Correct
the nr_blks calculation accordingly.
Fixes: 4ce02c679722 ("iomap: Add per-block dirty state tracking to improve performance")
Signed-off-by: Zhang Yi <yi.zhang@huawei.com>
Link: https://patch.msgid.link/20260714082325.325163-2-yi.zhang@huaweicloud.com
Reviewed-by: Joanne Koong <joannelkoong@gmail.com>
Reviewed-by: "Darrick J. Wong" <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
fs/iomap/buffered-io.c | 12 ++++++++----
1 file changed, 8 insertions(+), 4 deletions(-)
diff --git a/fs/iomap/buffered-io.c b/fs/iomap/buffered-io.c
index c0fa6acf19375b..734854f864fd1e 100644
--- a/fs/iomap/buffered-io.c
+++ b/fs/iomap/buffered-io.c
@@ -127,13 +127,17 @@ static void ifs_clear_range_dirty(struct folio *folio,
{
struct inode *inode = folio->mapping->host;
unsigned int blks_per_folio = i_blocks_per_folio(inode, folio);
- unsigned int first_blk = (off >> inode->i_blkbits);
- unsigned int last_blk = (off + len - 1) >> inode->i_blkbits;
- unsigned int nr_blks = last_blk - first_blk + 1;
+ unsigned int first_blk = round_up(off, i_blocksize(inode)) >>
+ inode->i_blkbits;
+ unsigned int last_blk = (off + len) >> inode->i_blkbits;
unsigned long flags;
+ if (first_blk >= last_blk)
+ return;
+
spin_lock_irqsave(&ifs->state_lock, flags);
- bitmap_clear(ifs->state, first_blk + blks_per_folio, nr_blks);
+ bitmap_clear(ifs->state, first_blk + blks_per_folio,
+ last_blk - first_blk);
spin_unlock_irqrestore(&ifs->state_lock, flags);
}
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 283/675] tipc: fix u16 MTU truncation in media and bearer MTU validation
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (281 preceding siblings ...)
2026-07-30 14:10 ` [PATCH 6.18 282/675] iomap: correct the range of a partial dirty clear Greg Kroah-Hartman
@ 2026-07-30 14:10 ` Greg Kroah-Hartman
2026-07-30 14:10 ` [PATCH 6.18 284/675] drm/tests: shmem: Set DMA mask to 64-bit in drm_gem_shmem Greg Kroah-Hartman
` (396 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:10 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, AutonomousCodeSecurity,
Vadim Fedorenko, Cen Zhang (Microsoft), Simon Horman, Paolo Abeni,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Cen Zhang (Microsoft) <blbllhy@gmail.com>
[ Upstream commit 9f29cd8a8e7901a2617c8064ce9f50fc67b97cb8 ]
Both TIPC_NL_MEDIA_SET and TIPC_NL_BEARER_SET accept user-supplied
MTU values but only enforce a minimum bound, not a maximum. When a user
sets the MTU to a value exceeding U16_MAX (65535), it passes validation
but is silently truncated when assigned to u16 fields l->mtu and
l->advertised_mtu in tipc_link_create(). Values like 65536 (0x10000)
truncate to 0, causing a division by zero in tipc_link_set_queue_limits()
which computes TIPC_MAX_PUBL / (l->mtu / ITEM_SIZE). Other overflowing
values (e.g. 65537-131071) produce small incorrect MTU values, resulting
in link malfunction behaviors.
Crash stack (triggered as unprivileged user via user namespace):
tipc_link_set_queue_limits net/tipc/link.c:2531
tipc_link_create net/tipc/link.c:520
tipc_node_check_dest net/tipc/node.c:1279
tipc_disc_rcv net/tipc/discover.c:252
tipc_rcv net/tipc/node.c:2129
tipc_udp_recv net/tipc/udp_media.c:392
Two independent paths lack the upper bound check:
1. tipc_udp_mtu_bad() -- called from __tipc_nl_media_set() (MEDIA_SET)
2. inline check in __tipc_nl_bearer_set() at bearer.c:1160 (BEARER_SET)
Fix both by rejecting MTU values above U16_MAX.
Fixes: 901271e0403a ("tipc: implement configuration of UDP media MTU")
Reported-by: AutonomousCodeSecurity@microsoft.com
Closes: https://lore.kernel.org/all/CAB8m9WgETt0AjmFwE=F-CKjGXsK6_WDv0=kbYRcC8-noo+amnA@mail.gmail.com
Reviewed-by: Vadim Fedorenko <vadim.fedorenko@linux.dev>
Signed-off-by: Cen Zhang (Microsoft) <blbllhy@gmail.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20260714041541.307702-1-blbllhy@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/tipc/netlink.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/net/tipc/netlink.c b/net/tipc/netlink.c
index 8336a9664703fe..1307dd1a961341 100644
--- a/net/tipc/netlink.c
+++ b/net/tipc/netlink.c
@@ -113,12 +113,16 @@ const struct nla_policy tipc_nl_node_policy[TIPC_NLA_NODE_MAX + 1] = {
};
/* Properties valid for media, bearer and link */
+static const struct netlink_range_validation tipc_nl_mtu_range = {
+ .max = U16_MAX,
+};
+
const struct nla_policy tipc_nl_prop_policy[TIPC_NLA_PROP_MAX + 1] = {
[TIPC_NLA_PROP_UNSPEC] = { .type = NLA_UNSPEC },
[TIPC_NLA_PROP_PRIO] = { .type = NLA_U32 },
[TIPC_NLA_PROP_TOL] = { .type = NLA_U32 },
[TIPC_NLA_PROP_WIN] = { .type = NLA_U32 },
- [TIPC_NLA_PROP_MTU] = { .type = NLA_U32 },
+ [TIPC_NLA_PROP_MTU] = NLA_POLICY_FULL_RANGE(NLA_U32, &tipc_nl_mtu_range),
[TIPC_NLA_PROP_BROADCAST] = { .type = NLA_U32 },
[TIPC_NLA_PROP_BROADCAST_RATIO] = { .type = NLA_U32 }
};
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 284/675] drm/tests: shmem: Set DMA mask to 64-bit in drm_gem_shmem
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (282 preceding siblings ...)
2026-07-30 14:10 ` [PATCH 6.18 283/675] tipc: fix u16 MTU truncation in media and bearer MTU validation Greg Kroah-Hartman
@ 2026-07-30 14:10 ` Greg Kroah-Hartman
2026-07-30 14:10 ` [PATCH 6.18 285/675] bpf: tcp: fix double sock release on batch realloc Greg Kroah-Hartman
` (395 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:10 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Thomas Zimmermann,
José Expósito, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: José Expósito <jose.exposito@redhat.com>
[ Upstream commit b04a248cfa6cfa1e7dc9ce91cb1eb88b1a70dd69 ]
drm_gem_shmem_test_purge [1] and drm_gem_shmem_test_get_pages_sgt [2]
intermittently fail on ppc64le and s390x CI systems with a DMA address
overflow:
DMA addr 0x0000000100307000+4096 overflow (mask ffffffff, bus limit 0)
WARNING: kernel/dma/direct.h:114 dma_direct_map_sg+0x778/0x920
drm_gem_shmem_test_purge: ASSERTION FAILED at
drivers/gpu/drm/tests/drm_gem_shmem_test.c:330
Expected sgt is not error, but is: -5
The call chain leading to the failure is:
drm_gem_shmem_test_purge() / drm_gem_shmem_test_get_pages_sgt()
drm_gem_shmem_get_pages_sgt()
drm_gem_shmem_get_pages_sgt_locked() [drm_gem_shmem_helper.c]
dma_map_sgtable() [mapping.c]
__dma_map_sg_attrs()
dma_direct_map_sg() [direct.c]
dma_direct_map_phys() [kernel/dma/direct.h]
dma_capable() Checks addr against DMA mask
-> FAILS: addr > 0xFFFFFFFF
The root cause is that KUnit devices are initialized with a 32-bit DMA
mask (DMA_BIT_MASK(32)) in lib/kunit/device.c. On ppc64le and s390x
systems with physical memory above 4GB, page allocations can land at
addresses that exceed this mask. When drm_gem_shmem_get_pages_sgt()
attempts to DMA-map these pages via dma_map_sgtable(), the DMA layer
rejects the mapping because the physical address overflows the 32-bit
mask.
The failure is intermittent because pages may or may not be allocated
above 4GB on any given run depend on memory pressure.
Fix by setting a 64-bit DMA mask on the device before calling
drm_gem_shmem_get_pages_sgt() for all tests, following the same pattern
already used in drm_gem_shmem_test_obj_create_private().
[1] https://s3.amazonaws.com/arr-cki-prod-trusted-artifacts/trusted-artifacts/2643976103/test_s390x/15128551935/artifacts/jobwatch/logs/recipes/21561049/tasks/220716793/results/1014626315/logs/dmesg.log
[2] https://s3.amazonaws.com/arr-cki-prod-trusted-artifacts/trusted-artifacts/2643976103/test_ppc64le/15128551933/artifacts/jobwatch/logs/recipes/21561041/tasks/220716705/results/1014628163/logs/dmesg.log
Fixes: 93032ae634d4 ("drm/test: add a test suite for GEM objects backed by shmem")
Closes: https://datawarehouse.cki-project.org/issue/5345
Closes: https://datawarehouse.cki-project.org/issue/3184
Assisted-by: Claude:claude-4.6-opus
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: José Expósito <jose.exposito@redhat.com>
Link: https://patch.msgid.link/20260703150808.3832-1-jose.exposito89@gmail.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/tests/drm_gem_shmem_test.c | 16 ++++++++++------
1 file changed, 10 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/tests/drm_gem_shmem_test.c b/drivers/gpu/drm/tests/drm_gem_shmem_test.c
index 4b459f21acfd95..b1fa287892fb81 100644
--- a/drivers/gpu/drm/tests/drm_gem_shmem_test.c
+++ b/drivers/gpu/drm/tests/drm_gem_shmem_test.c
@@ -95,13 +95,9 @@ static void drm_gem_shmem_test_obj_create_private(struct kunit *test)
sg_init_one(sgt->sgl, buf, TEST_SIZE);
/*
- * Set the DMA mask to 64-bits and map the sgtables
- * otherwise drm_gem_shmem_free will cause a warning
- * on debug kernels.
+ * Map the sgtables otherwise drm_gem_shmem_free will cause a warning on
+ * debug kernels.
*/
- ret = dma_set_mask(drm_dev->dev, DMA_BIT_MASK(64));
- KUNIT_ASSERT_EQ(test, ret, 0);
-
ret = dma_map_sgtable(drm_dev->dev, sgt, DMA_BIDIRECTIONAL, 0);
KUNIT_ASSERT_EQ(test, ret, 0);
@@ -352,11 +348,19 @@ static int drm_gem_shmem_test_init(struct kunit *test)
{
struct device *dev;
struct drm_device *drm_dev;
+ int ret;
/* Allocate a parent device */
dev = drm_kunit_helper_alloc_device(test);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, dev);
+ /*
+ * Set the DMA mask to 64-bits to avoid intermittent failures calling
+ * drm_gem_shmem_get_pages_sgt().
+ */
+ ret = dma_set_mask(dev, DMA_BIT_MASK(64));
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
/*
* The DRM core will automatically initialize the GEM core and create
* a DRM Memory Manager object which provides an address space pool
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 285/675] bpf: tcp: fix double sock release on batch realloc
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (283 preceding siblings ...)
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@ 2026-07-30 14:10 ` Greg Kroah-Hartman
2026-07-30 14:10 ` [PATCH 6.18 286/675] net: stmmac: remove xstats.pcs_* members Greg Kroah-Hartman
` (394 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:10 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, AutonomousCodeSecurity,
Xiang Mei (Microsoft), Eric Dumazet, Jordan Rife, Paolo Abeni,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Xiang Mei (Microsoft) <xmei5@asu.edu>
[ Upstream commit 980a813452754f8001704744e92f7aa697c53dd3 ]
bpf_iter_tcp_batch() releases the current batch via
bpf_iter_tcp_put_batch(), which drops the socket refs and rewrites
each slot with the socket cookie, then grows the batch. cur_sk/end_sk
are kept for bpf_iter_tcp_resume(), but on realloc failure the function
returns ERR_PTR() before resume runs, leaving cur_sk < end_sk over
slots that now hold cookies rather than sock pointers.
bpf_iter_tcp_seq_stop() then calls bpf_iter_tcp_put_batch() again and
dereferences a cookie as a struct sock.
Empty the batch on the failure path so stop() does not release it
again. The sockets were already freed by the first
bpf_iter_tcp_put_batch(), so nothing leaks, and a later read() rescans
the bucket from the start instead of skipping it. The sibling
GFP_NOWAIT failure path still holds real socket references and is left
for stop() to release.
BUG: KASAN: null-ptr-deref in __sock_gen_cookie
Read of size 8 at addr 0000000000000059 by task exploit
...
__sock_gen_cookie (net/core/sock_diag.c:28)
bpf_iter_tcp_put_batch (net/ipv4/tcp_ipv4.c:2918)
bpf_iter_tcp_seq_stop (net/ipv4/tcp_ipv4.c:3270)
bpf_seq_read (kernel/bpf/bpf_iter.c:205)
vfs_read (fs/read_write.c:572)
ksys_read (fs/read_write.c:716)
do_syscall_64
entry_SYSCALL_64_after_hwframe
Kernel panic - not syncing: Fatal exception
Fixes: cdec67a489d4 ("bpf: tcp: Make sure iter->batch always contains a full bucket snapshot")
Reported-by: AutonomousCodeSecurity@microsoft.com
Signed-off-by: Xiang Mei (Microsoft) <xmei5@asu.edu>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Jordan Rife <jordan@jrife.io>
Link: https://patch.msgid.link/20260713233230.3553593-1-xmei5@asu.edu
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/ipv4/tcp_ipv4.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index a1ed4fa264836d..7efb49f9e5b3bf 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -3284,8 +3284,11 @@ static struct sock *bpf_iter_tcp_batch(struct seq_file *seq)
bpf_iter_tcp_put_batch(iter);
err = bpf_iter_tcp_realloc_batch(iter, expected * 3 / 2,
GFP_USER);
- if (err)
+ if (err) {
+ iter->cur_sk = 0;
+ iter->end_sk = 0;
return ERR_PTR(err);
+ }
sk = bpf_iter_tcp_resume(seq);
if (!sk)
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 286/675] net: stmmac: remove xstats.pcs_* members
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (284 preceding siblings ...)
2026-07-30 14:10 ` [PATCH 6.18 285/675] bpf: tcp: fix double sock release on batch realloc Greg Kroah-Hartman
@ 2026-07-30 14:10 ` Greg Kroah-Hartman
2026-07-30 14:10 ` [PATCH 6.18 287/675] net: stmmac: socfpga: Agilex5 EMAC platform configuration Greg Kroah-Hartman
` (393 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:10 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Andrew Lunn, Russell King (Oracle),
Maxime Chevallier, Lad Prabhakar, Jakub Kicinski, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
[ Upstream commit 14f74bc6dc699f63b5a6dfa9b22229f0caea89f3 ]
As a result of the previous commit, the pcs_link, pcs_duplex and
pcs_speed members are not used outside of the interrupt handling code,
and are only used to print their status using the misleading "Link is"
messages that bear no relation to the actual status of the link.
Remove the printing of these messages, these members, and the code
that decodes them from the hardware.
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Tested-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Tested-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Link: https://patch.msgid.link/E1v9P63-0000000AolI-23Kf@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Stable-dep-of: 9fcf274d93af ("net: stmmac: xgmac: fix l4 filter port overwrite on register update")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/stmicro/stmmac/common.h | 3 --
.../ethernet/stmicro/stmmac/dwmac1000_core.c | 28 +------------------
.../net/ethernet/stmicro/stmmac/dwmac4_core.c | 28 +------------------
3 files changed, 2 insertions(+), 57 deletions(-)
diff --git a/drivers/net/ethernet/stmicro/stmmac/common.h b/drivers/net/ethernet/stmicro/stmmac/common.h
index acd7719506b612..83929477b058b6 100644
--- a/drivers/net/ethernet/stmicro/stmmac/common.h
+++ b/drivers/net/ethernet/stmicro/stmmac/common.h
@@ -197,9 +197,6 @@ struct stmmac_extra_stats {
unsigned long irq_pcs_ane_n;
unsigned long irq_pcs_link_n;
unsigned long irq_rgmii_n;
- unsigned long pcs_link;
- unsigned long pcs_duplex;
- unsigned long pcs_speed;
/* debug register */
unsigned long mtl_tx_status_fifo_full;
unsigned long mtl_tx_fifo_not_empty;
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c b/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c
index fe776ddf688952..2c5ee59c320864 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c
@@ -266,34 +266,8 @@ static void dwmac1000_pmt(struct mac_device_info *hw, unsigned long mode)
/* RGMII or SMII interface */
static void dwmac1000_rgsmii(void __iomem *ioaddr, struct stmmac_extra_stats *x)
{
- u32 status;
-
- status = readl(ioaddr + GMAC_RGSMIIIS);
+ readl(ioaddr + GMAC_RGSMIIIS);
x->irq_rgmii_n++;
-
- /* Check the link status */
- if (status & GMAC_RGSMIIIS_LNKSTS) {
- int speed_value;
-
- x->pcs_link = 1;
-
- speed_value = ((status & GMAC_RGSMIIIS_SPEED) >>
- GMAC_RGSMIIIS_SPEED_SHIFT);
- if (speed_value == GMAC_RGSMIIIS_SPEED_125)
- x->pcs_speed = SPEED_1000;
- else if (speed_value == GMAC_RGSMIIIS_SPEED_25)
- x->pcs_speed = SPEED_100;
- else
- x->pcs_speed = SPEED_10;
-
- x->pcs_duplex = (status & GMAC_RGSMIIIS_LNKMOD_MASK);
-
- pr_info("Link is Up - %d/%s\n", (int)x->pcs_speed,
- x->pcs_duplex ? "Full" : "Half");
- } else {
- x->pcs_link = 0;
- pr_info("Link is Down\n");
- }
}
static int dwmac1000_irq_status(struct mac_device_info *hw,
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c b/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c
index d85bc0bb5c3c05..8a19df7b05775d 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c
@@ -592,34 +592,8 @@ static void dwmac4_ctrl_ane(struct stmmac_priv *priv, bool ane, bool srgmi_ral,
/* RGMII or SMII interface */
static void dwmac4_phystatus(void __iomem *ioaddr, struct stmmac_extra_stats *x)
{
- u32 status;
-
- status = readl(ioaddr + GMAC_PHYIF_CONTROL_STATUS);
+ readl(ioaddr + GMAC_PHYIF_CONTROL_STATUS);
x->irq_rgmii_n++;
-
- /* Check the link status */
- if (status & GMAC_PHYIF_CTRLSTATUS_LNKSTS) {
- int speed_value;
-
- x->pcs_link = 1;
-
- speed_value = ((status & GMAC_PHYIF_CTRLSTATUS_SPEED) >>
- GMAC_PHYIF_CTRLSTATUS_SPEED_SHIFT);
- if (speed_value == GMAC_PHYIF_CTRLSTATUS_SPEED_125)
- x->pcs_speed = SPEED_1000;
- else if (speed_value == GMAC_PHYIF_CTRLSTATUS_SPEED_25)
- x->pcs_speed = SPEED_100;
- else
- x->pcs_speed = SPEED_10;
-
- x->pcs_duplex = (status & GMAC_PHYIF_CTRLSTATUS_LNKMOD);
-
- pr_info("Link is Up - %d/%s\n", (int)x->pcs_speed,
- x->pcs_duplex ? "Full" : "Half");
- } else {
- x->pcs_link = 0;
- pr_info("Link is Down\n");
- }
}
static int dwmac4_irq_mtl_status(struct stmmac_priv *priv,
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 287/675] net: stmmac: socfpga: Agilex5 EMAC platform configuration
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (285 preceding siblings ...)
2026-07-30 14:10 ` [PATCH 6.18 286/675] net: stmmac: remove xstats.pcs_* members Greg Kroah-Hartman
@ 2026-07-30 14:10 ` Greg Kroah-Hartman
2026-07-30 14:10 ` [PATCH 6.18 288/675] net: stmmac: socfpga: Enable TBS support for Agilex5 Greg Kroah-Hartman
` (392 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:10 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Rohan G Thomas, Maxime Chevallier,
Jakub Kicinski, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Rohan G Thomas <rohan.g.thomas@altera.com>
[ Upstream commit 93d46ea3e984323fae0e5d2919cf5817e1297d41 ]
Agilex5 HPS EMAC uses the dwxgmac-3.10a IP, unlike previous socfpga
platforms which use dwmac1000 IP. Due to differences in platform
configuration, Agilex5 requires a distinct setup.
Introduce a setup_plat_dat() callback in socfpga_dwmac_ops to handle
platform-specific setup. This callback is invoked before
stmmac_dvr_probe() to ensure the platform data is correctly
configured. Also, implemented separate setup_plat_dat() callback for
current socfpga platforms and Agilex5.
Signed-off-by: Rohan G Thomas <rohan.g.thomas@altera.com>
Reviewed-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Tested-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Link: https://patch.msgid.link/20251101-agilex5_ext-v2-1-a6b51b4dca4d@altera.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Stable-dep-of: 9fcf274d93af ("net: stmmac: xgmac: fix l4 filter port overwrite on register update")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
.../ethernet/stmicro/stmmac/dwmac-socfpga.c | 30 +++++++++++++++++--
1 file changed, 27 insertions(+), 3 deletions(-)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c
index 2ff5db6d41ca08..5666b017236439 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c
@@ -44,6 +44,7 @@
struct socfpga_dwmac;
struct socfpga_dwmac_ops {
int (*set_phy_mode)(struct socfpga_dwmac *dwmac_priv);
+ void (*setup_plat_dat)(struct socfpga_dwmac *dwmac_priv);
};
struct socfpga_dwmac {
@@ -441,6 +442,23 @@ static int socfpga_dwmac_init(struct platform_device *pdev, void *bsp_priv)
return dwmac->ops->set_phy_mode(dwmac);
}
+static void socfpga_gen5_setup_plat_dat(struct socfpga_dwmac *dwmac)
+{
+ struct plat_stmmacenet_data *plat_dat = dwmac->plat_dat;
+
+ plat_dat->core_type = DWMAC_CORE_GMAC;
+
+ /* Rx watchdog timer in dwmac is buggy in this hw */
+ plat_dat->riwt_off = 1;
+}
+
+static void socfpga_agilex5_setup_plat_dat(struct socfpga_dwmac *dwmac)
+{
+ struct plat_stmmacenet_data *plat_dat = dwmac->plat_dat;
+
+ plat_dat->core_type = DWMAC_CORE_XGMAC;
+}
+
static int socfpga_dwmac_probe(struct platform_device *pdev)
{
struct plat_stmmacenet_data *plat_dat;
@@ -497,25 +515,31 @@ static int socfpga_dwmac_probe(struct platform_device *pdev)
plat_dat->pcs_init = socfpga_dwmac_pcs_init;
plat_dat->pcs_exit = socfpga_dwmac_pcs_exit;
plat_dat->select_pcs = socfpga_dwmac_select_pcs;
- plat_dat->core_type = DWMAC_CORE_GMAC;
- plat_dat->riwt_off = 1;
+ ops->setup_plat_dat(dwmac);
return devm_stmmac_pltfr_probe(pdev, plat_dat, &stmmac_res);
}
static const struct socfpga_dwmac_ops socfpga_gen5_ops = {
.set_phy_mode = socfpga_gen5_set_phy_mode,
+ .setup_plat_dat = socfpga_gen5_setup_plat_dat,
};
static const struct socfpga_dwmac_ops socfpga_gen10_ops = {
.set_phy_mode = socfpga_gen10_set_phy_mode,
+ .setup_plat_dat = socfpga_gen5_setup_plat_dat,
+};
+
+static const struct socfpga_dwmac_ops socfpga_agilex5_ops = {
+ .set_phy_mode = socfpga_gen10_set_phy_mode,
+ .setup_plat_dat = socfpga_agilex5_setup_plat_dat,
};
static const struct of_device_id socfpga_dwmac_match[] = {
{ .compatible = "altr,socfpga-stmmac", .data = &socfpga_gen5_ops },
{ .compatible = "altr,socfpga-stmmac-a10-s10", .data = &socfpga_gen10_ops },
- { .compatible = "altr,socfpga-stmmac-agilex5", .data = &socfpga_gen10_ops },
+ { .compatible = "altr,socfpga-stmmac-agilex5", .data = &socfpga_agilex5_ops },
{ }
};
MODULE_DEVICE_TABLE(of, socfpga_dwmac_match);
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 288/675] net: stmmac: socfpga: Enable TBS support for Agilex5
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (286 preceding siblings ...)
2026-07-30 14:10 ` [PATCH 6.18 287/675] net: stmmac: socfpga: Agilex5 EMAC platform configuration Greg Kroah-Hartman
@ 2026-07-30 14:10 ` Greg Kroah-Hartman
2026-07-30 14:10 ` [PATCH 6.18 289/675] net: stmmac: socfpga: Add hardware supported cross-timestamp Greg Kroah-Hartman
` (391 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:10 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Rohan G Thomas, Jakub Kicinski,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Rohan G Thomas <rohan.g.thomas@altera.com>
[ Upstream commit 4c00476d44804db3c16838299b87a11741cd0dbd ]
Agilex5 supports Time-Based Scheduling(TBS) for Tx queue 6 and Tx
queue 7. This commit enables TBS support for these queues.
Signed-off-by: Rohan G Thomas <rohan.g.thomas@altera.com>
Link: https://patch.msgid.link/20251101-agilex5_ext-v2-2-a6b51b4dca4d@altera.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Stable-dep-of: 9fcf274d93af ("net: stmmac: xgmac: fix l4 filter port overwrite on register update")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c
index 5666b017236439..4f256f0ae05c15 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c
@@ -457,6 +457,19 @@ static void socfpga_agilex5_setup_plat_dat(struct socfpga_dwmac *dwmac)
struct plat_stmmacenet_data *plat_dat = dwmac->plat_dat;
plat_dat->core_type = DWMAC_CORE_XGMAC;
+
+ /* Enable TBS */
+ switch (plat_dat->tx_queues_to_use) {
+ case 8:
+ plat_dat->tx_queues_cfg[7].tbs_en = true;
+ fallthrough;
+ case 7:
+ plat_dat->tx_queues_cfg[6].tbs_en = true;
+ break;
+ default:
+ /* Tx Queues 0 - 5 doesn't support TBS on Agilex5 */
+ break;
+ }
}
static int socfpga_dwmac_probe(struct platform_device *pdev)
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 289/675] net: stmmac: socfpga: Add hardware supported cross-timestamp
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (287 preceding siblings ...)
2026-07-30 14:10 ` [PATCH 6.18 288/675] net: stmmac: socfpga: Enable TBS support for Agilex5 Greg Kroah-Hartman
@ 2026-07-30 14:10 ` Greg Kroah-Hartman
2026-07-30 14:10 ` [PATCH 6.18 290/675] net: stmmac: cores: remove many xxx_SHIFT definitions Greg Kroah-Hartman
` (390 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:10 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Rohan G Thomas, Jakub Kicinski,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Rohan G Thomas <rohan.g.thomas@altera.com>
[ Upstream commit fd8c4f6454963aa7ea895657472aa57f33779d57 ]
Cross timestamping is supported on Agilex5 platform with Synchronized
Multidrop Timestamp Gathering(SMTG) IP. The hardware cross-timestamp
result is made available the applications through the ioctl call
PTP_SYS_OFFSET_PRECISE, which inturn calls stmmac_getcrosststamp().
Device time is stored in the MAC Auxiliary register. The 64-bit System
time (ARM_ARCH_COUNTER) is stored in SMTG IP. SMTG IP is an MDIO device
with 0xC - 0xF MDIO register space holds 64-bit system time.
This commit is similar to following commit for Intel platforms:
Commit 341f67e424e5 ("net: stmmac: Add hardware supported cross-timestamp")
Signed-off-by: Rohan G Thomas <rohan.g.thomas@altera.com>
Link: https://patch.msgid.link/20251101-agilex5_ext-v2-4-a6b51b4dca4d@altera.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Stable-dep-of: 9fcf274d93af ("net: stmmac: xgmac: fix l4 filter port overwrite on register update")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
.../ethernet/stmicro/stmmac/dwmac-socfpga.c | 120 ++++++++++++++++++
.../net/ethernet/stmicro/stmmac/dwxgmac2.h | 5 +
2 files changed, 125 insertions(+)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c
index 4f256f0ae05c15..d8c49083ada21c 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c
@@ -5,6 +5,7 @@
*/
#include <linux/mfd/altera-sysmgr.h>
+#include <linux/clocksource_ids.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/of_net.h>
@@ -15,8 +16,10 @@
#include <linux/reset.h>
#include <linux/stmmac.h>
+#include "dwxgmac2.h"
#include "stmmac.h"
#include "stmmac_platform.h"
+#include "stmmac_ptp.h"
#define SYSMGR_EMACGRP_CTRL_PHYSEL_ENUM_GMII_MII 0x0
#define SYSMGR_EMACGRP_CTRL_PHYSEL_ENUM_RGMII 0x1
@@ -41,6 +44,13 @@
#define SGMII_ADAPTER_ENABLE 0x0000
#define SGMII_ADAPTER_DISABLE 0x0001
+#define SMTG_MDIO_ADDR 0x15
+#define SMTG_TSC_WORD0 0xC
+#define SMTG_TSC_WORD1 0xD
+#define SMTG_TSC_WORD2 0xE
+#define SMTG_TSC_WORD3 0xF
+#define SMTG_TSC_SHIFT 16
+
struct socfpga_dwmac;
struct socfpga_dwmac_ops {
int (*set_phy_mode)(struct socfpga_dwmac *dwmac_priv);
@@ -269,6 +279,112 @@ static int socfpga_set_phy_mode_common(int phymode, u32 *val)
return 0;
}
+static void get_smtgtime(struct mii_bus *mii, int smtg_addr, u64 *smtg_time)
+{
+ u64 ns;
+
+ ns = mdiobus_read(mii, smtg_addr, SMTG_TSC_WORD3);
+ ns <<= SMTG_TSC_SHIFT;
+ ns |= mdiobus_read(mii, smtg_addr, SMTG_TSC_WORD2);
+ ns <<= SMTG_TSC_SHIFT;
+ ns |= mdiobus_read(mii, smtg_addr, SMTG_TSC_WORD1);
+ ns <<= SMTG_TSC_SHIFT;
+ ns |= mdiobus_read(mii, smtg_addr, SMTG_TSC_WORD0);
+
+ *smtg_time = ns;
+}
+
+static int smtg_crosststamp(ktime_t *device, struct system_counterval_t *system,
+ void *ctx)
+{
+ struct stmmac_priv *priv = (struct stmmac_priv *)ctx;
+ u32 num_snapshot, gpio_value, acr_value;
+ void __iomem *ptpaddr = priv->ptpaddr;
+ void __iomem *ioaddr = priv->hw->pcsr;
+ unsigned long flags;
+ u64 smtg_time = 0;
+ u64 ptp_time = 0;
+ int i, ret;
+ u32 v;
+
+ /* Both internal crosstimestamping and external triggered event
+ * timestamping cannot be run concurrently.
+ */
+ if (priv->plat->flags & STMMAC_FLAG_EXT_SNAPSHOT_EN)
+ return -EBUSY;
+
+ mutex_lock(&priv->aux_ts_lock);
+ /* Enable Internal snapshot trigger */
+ acr_value = readl(ptpaddr + PTP_ACR);
+ acr_value &= ~PTP_ACR_MASK;
+ switch (priv->plat->int_snapshot_num) {
+ case AUX_SNAPSHOT0:
+ acr_value |= PTP_ACR_ATSEN0;
+ break;
+ case AUX_SNAPSHOT1:
+ acr_value |= PTP_ACR_ATSEN1;
+ break;
+ case AUX_SNAPSHOT2:
+ acr_value |= PTP_ACR_ATSEN2;
+ break;
+ case AUX_SNAPSHOT3:
+ acr_value |= PTP_ACR_ATSEN3;
+ break;
+ default:
+ mutex_unlock(&priv->aux_ts_lock);
+ return -EINVAL;
+ }
+ writel(acr_value, ptpaddr + PTP_ACR);
+
+ /* Clear FIFO */
+ acr_value = readl(ptpaddr + PTP_ACR);
+ acr_value |= PTP_ACR_ATSFC;
+ writel(acr_value, ptpaddr + PTP_ACR);
+ /* Release the mutex */
+ mutex_unlock(&priv->aux_ts_lock);
+
+ /* Trigger Internal snapshot signal. Create a rising edge by just toggle
+ * the GPO0 to low and back to high.
+ */
+ gpio_value = readl(ioaddr + XGMAC_GPIO_STATUS);
+ gpio_value &= ~XGMAC_GPIO_GPO0;
+ writel(gpio_value, ioaddr + XGMAC_GPIO_STATUS);
+ gpio_value |= XGMAC_GPIO_GPO0;
+ writel(gpio_value, ioaddr + XGMAC_GPIO_STATUS);
+
+ /* Poll for time sync operation done */
+ ret = readl_poll_timeout(priv->ioaddr + XGMAC_INT_STATUS, v,
+ (v & XGMAC_INT_TSIS), 100, 10000);
+ if (ret) {
+ netdev_err(priv->dev, "%s: Wait for time sync operation timeout\n",
+ __func__);
+ return ret;
+ }
+
+ *system = (struct system_counterval_t) {
+ .cycles = 0,
+ .cs_id = CSID_ARM_ARCH_COUNTER,
+ .use_nsecs = false,
+ };
+
+ num_snapshot = (readl(ioaddr + XGMAC_TIMESTAMP_STATUS) &
+ XGMAC_TIMESTAMP_ATSNS_MASK) >>
+ XGMAC_TIMESTAMP_ATSNS_SHIFT;
+
+ /* Repeat until the timestamps are from the FIFO last segment */
+ for (i = 0; i < num_snapshot; i++) {
+ read_lock_irqsave(&priv->ptp_lock, flags);
+ stmmac_get_ptptime(priv, ptpaddr, &ptp_time);
+ *device = ns_to_ktime(ptp_time);
+ read_unlock_irqrestore(&priv->ptp_lock, flags);
+ }
+
+ get_smtgtime(priv->mii, SMTG_MDIO_ADDR, &smtg_time);
+ system->cycles = smtg_time;
+
+ return 0;
+}
+
static int socfpga_gen5_set_phy_mode(struct socfpga_dwmac *dwmac)
{
struct regmap *sys_mgr_base_addr = dwmac->sys_mgr_base_addr;
@@ -470,6 +586,10 @@ static void socfpga_agilex5_setup_plat_dat(struct socfpga_dwmac *dwmac)
/* Tx Queues 0 - 5 doesn't support TBS on Agilex5 */
break;
}
+
+ /* Hw supported cross-timestamp */
+ plat_dat->int_snapshot_num = AUX_SNAPSHOT0;
+ plat_dat->crosststamp = smtg_crosststamp;
}
static int socfpga_dwmac_probe(struct platform_device *pdev)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h
index 0d408ee17f3378..e48cfa05000c07 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h
+++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h
@@ -79,6 +79,7 @@
#define XGMAC_PSRQ(x) GENMASK((x) * 8 + 7, (x) * 8)
#define XGMAC_PSRQ_SHIFT(x) ((x) * 8)
#define XGMAC_INT_STATUS 0x000000b0
+#define XGMAC_INT_TSIS BIT(12)
#define XGMAC_LPIIS BIT(5)
#define XGMAC_PMTIS BIT(4)
#define XGMAC_INT_EN 0x000000b4
@@ -173,6 +174,8 @@
#define XGMAC_MDIO_ADDR 0x00000200
#define XGMAC_MDIO_DATA 0x00000204
#define XGMAC_MDIO_C22P 0x00000220
+#define XGMAC_GPIO_STATUS 0x0000027c
+#define XGMAC_GPIO_GPO0 BIT(16)
#define XGMAC_ADDRx_HIGH(x) (0x00000300 + (x) * 0x8)
#define XGMAC_ADDR_MAX 32
#define XGMAC_AE BIT(31)
@@ -220,6 +223,8 @@
#define XGMAC_OB BIT(0)
#define XGMAC_RSS_DATA 0x00000c8c
#define XGMAC_TIMESTAMP_STATUS 0x00000d20
+#define XGMAC_TIMESTAMP_ATSNS_MASK GENMASK(29, 25)
+#define XGMAC_TIMESTAMP_ATSNS_SHIFT 25
#define XGMAC_TXTSC BIT(15)
#define XGMAC_TXTIMESTAMP_NSEC 0x00000d30
#define XGMAC_TXTSSTSLO GENMASK(30, 0)
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 290/675] net: stmmac: cores: remove many xxx_SHIFT definitions
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (288 preceding siblings ...)
2026-07-30 14:10 ` [PATCH 6.18 289/675] net: stmmac: socfpga: Add hardware supported cross-timestamp Greg Kroah-Hartman
@ 2026-07-30 14:10 ` Greg Kroah-Hartman
2026-07-30 14:10 ` [PATCH 6.18 291/675] net: stmmac: xgmac: fix l4 filter port overwrite on register update Greg Kroah-Hartman
` (389 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:10 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Russell King (Oracle),
Jakub Kicinski, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
[ Upstream commit 8409495bf6c907a5bc9632464dbdd8fb619f9ceb ]
We have many xxx_SHIFT definitions along side their corresponding
xxx_MASK definitions for the various cores. Manually using the
shift and mask can be error prone, as shown with the dwmac4 RXFSTS
fix patch.
Convert sites that use xxx_SHIFT and xxx_MASK directly to use
FIELD_GET(), FIELD_PREP(), and u32_replace_bits() as appropriate.
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://patch.msgid.link/E1vdtw8-00000002Gtu-0Hyu@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Stable-dep-of: 9fcf274d93af ("net: stmmac: xgmac: fix l4 filter port overwrite on register update")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
.../ethernet/stmicro/stmmac/dwmac-loongson.c | 5 +-
.../ethernet/stmicro/stmmac/dwmac-socfpga.c | 5 +-
.../net/ethernet/stmicro/stmmac/dwmac100.h | 9 +--
.../net/ethernet/stmicro/stmmac/dwmac1000.h | 16 +---
.../ethernet/stmicro/stmmac/dwmac1000_core.c | 21 +++---
.../ethernet/stmicro/stmmac/dwmac1000_dma.c | 16 ++--
.../ethernet/stmicro/stmmac/dwmac100_core.c | 2 +-
.../ethernet/stmicro/stmmac/dwmac100_dma.c | 3 +-
drivers/net/ethernet/stmicro/stmmac/dwmac4.h | 49 ++++--------
.../net/ethernet/stmicro/stmmac/dwmac4_core.c | 25 +++----
.../net/ethernet/stmicro/stmmac/dwmac4_dma.c | 40 +++++-----
.../net/ethernet/stmicro/stmmac/dwmac4_dma.h | 11 +--
.../net/ethernet/stmicro/stmmac/dwmac4_lib.c | 2 +-
.../net/ethernet/stmicro/stmmac/dwmac_dma.h | 10 +--
.../net/ethernet/stmicro/stmmac/dwmac_lib.c | 10 +--
.../net/ethernet/stmicro/stmmac/dwxgmac2.h | 31 ++------
.../ethernet/stmicro/stmmac/dwxgmac2_core.c | 21 +++---
.../ethernet/stmicro/stmmac/dwxgmac2_dma.c | 75 ++++++++-----------
18 files changed, 129 insertions(+), 222 deletions(-)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c
index ab431bf9b25f29..e6bce3a433a789 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c
@@ -209,9 +209,8 @@ static void loongson_dwmac_dma_init_channel(struct stmmac_priv *priv,
value |= DMA_BUS_MODE_MAXPBL;
value |= DMA_BUS_MODE_USP;
- value &= ~(DMA_BUS_MODE_PBL_MASK | DMA_BUS_MODE_RPBL_MASK);
- value |= (txpbl << DMA_BUS_MODE_PBL_SHIFT);
- value |= (rxpbl << DMA_BUS_MODE_RPBL_SHIFT);
+ value = u32_replace_bits(value, txpbl, DMA_BUS_MODE_PBL_MASK);
+ value = u32_replace_bits(value, rxpbl, DMA_BUS_MODE_RPBL_MASK);
/* Set the Fixed burst mode */
if (dma_cfg->fixed_burst)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c
index d8c49083ada21c..e40d0d69630375 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c
@@ -367,9 +367,8 @@ static int smtg_crosststamp(ktime_t *device, struct system_counterval_t *system,
.use_nsecs = false,
};
- num_snapshot = (readl(ioaddr + XGMAC_TIMESTAMP_STATUS) &
- XGMAC_TIMESTAMP_ATSNS_MASK) >>
- XGMAC_TIMESTAMP_ATSNS_SHIFT;
+ num_snapshot = FIELD_GET(XGMAC_TIMESTAMP_ATSNS_MASK,
+ readl(ioaddr + XGMAC_TIMESTAMP_STATUS));
/* Repeat until the timestamps are from the FIFO last segment */
for (i = 0; i < num_snapshot; i++) {
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac100.h b/drivers/net/ethernet/stmicro/stmmac/dwmac100.h
index 7ab791c8d355fb..eae929955ad780 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac100.h
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac100.h
@@ -59,8 +59,7 @@
#define MAC_CORE_INIT (MAC_CONTROL_HBD)
/* MAC FLOW CTRL defines */
-#define MAC_FLOW_CTRL_PT_MASK 0xffff0000 /* Pause Time Mask */
-#define MAC_FLOW_CTRL_PT_SHIFT 16
+#define MAC_FLOW_CTRL_PT_MASK GENMASK(31, 16) /* Pause Time Mask */
#define MAC_FLOW_CTRL_PASS 0x00000004 /* Pass Control Frames */
#define MAC_FLOW_CTRL_ENABLE 0x00000002 /* Flow Control Enable */
#define MAC_FLOW_CTRL_PAUSE 0x00000001 /* Flow Control Busy ... */
@@ -76,10 +75,8 @@
/* DMA Bus Mode register defines */
#define DMA_BUS_MODE_DBO 0x00100000 /* Descriptor Byte Ordering */
#define DMA_BUS_MODE_BLE 0x00000080 /* Big Endian/Little Endian */
-#define DMA_BUS_MODE_PBL_MASK 0x00003f00 /* Programmable Burst Len */
-#define DMA_BUS_MODE_PBL_SHIFT 8
-#define DMA_BUS_MODE_DSL_MASK 0x0000007c /* Descriptor Skip Length */
-#define DMA_BUS_MODE_DSL_SHIFT 2 /* (in DWORDS) */
+#define DMA_BUS_MODE_PBL_MASK GENMASK(13, 8) /* Programmable Burst Len */
+#define DMA_BUS_MODE_DSL_MASK GENMASK(6, 2) /* Descriptor Skip Length */
#define DMA_BUS_MODE_BAR_BUS 0x00000002 /* Bar-Bus Arbitration */
#define DMA_BUS_MODE_DEFAULT 0x00000000
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac1000.h b/drivers/net/ethernet/stmicro/stmmac/dwmac1000.h
index 0c011a47d5a3e9..12c82235c1d7e8 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac1000.h
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac1000.h
@@ -77,7 +77,6 @@ enum power_event {
/* SGMII/RGMII status register */
#define GMAC_RGSMIIIS_LNKMODE BIT(0)
#define GMAC_RGSMIIIS_SPEED GENMASK(2, 1)
-#define GMAC_RGSMIIIS_SPEED_SHIFT 1
#define GMAC_RGSMIIIS_LNKSTS BIT(3)
#define GMAC_RGSMIIIS_JABTO BIT(4)
#define GMAC_RGSMIIIS_FALSECARDET BIT(5)
@@ -134,8 +133,7 @@ enum inter_frame_gap {
#define GMAC_MII_ADDR_WRITE 0x00000002 /* MII Write */
#define GMAC_MII_ADDR_BUSY 0x00000001 /* MII Busy */
/* GMAC FLOW CTRL defines */
-#define GMAC_FLOW_CTRL_PT_MASK 0xffff0000 /* Pause Time Mask */
-#define GMAC_FLOW_CTRL_PT_SHIFT 16
+#define GMAC_FLOW_CTRL_PT_MASK GENMASK(31, 16) /* Pause Time Mask */
#define GMAC_FLOW_CTRL_UP 0x00000008 /* Unicast pause frame enable */
#define GMAC_FLOW_CTRL_RFE 0x00000004 /* Rx Flow Control Enable */
#define GMAC_FLOW_CTRL_TFE 0x00000002 /* Tx Flow Control Enable */
@@ -148,7 +146,6 @@ enum inter_frame_gap {
#define GMAC_DEBUG_TWCSTS BIT(22) /* MTL Tx FIFO Write Controller */
/* MTL Tx FIFO Read Controller Status */
#define GMAC_DEBUG_TRCSTS_MASK GENMASK(21, 20)
-#define GMAC_DEBUG_TRCSTS_SHIFT 20
#define GMAC_DEBUG_TRCSTS_IDLE 0
#define GMAC_DEBUG_TRCSTS_READ 1
#define GMAC_DEBUG_TRCSTS_TXW 2
@@ -156,7 +153,6 @@ enum inter_frame_gap {
#define GMAC_DEBUG_TXPAUSED BIT(19) /* MAC Transmitter in PAUSE */
/* MAC Transmit Frame Controller Status */
#define GMAC_DEBUG_TFCSTS_MASK GENMASK(18, 17)
-#define GMAC_DEBUG_TFCSTS_SHIFT 17
#define GMAC_DEBUG_TFCSTS_IDLE 0
#define GMAC_DEBUG_TFCSTS_WAIT 1
#define GMAC_DEBUG_TFCSTS_GEN_PAUSE 2
@@ -164,13 +160,11 @@ enum inter_frame_gap {
/* MAC GMII or MII Transmit Protocol Engine Status */
#define GMAC_DEBUG_TPESTS BIT(16)
#define GMAC_DEBUG_RXFSTS_MASK GENMASK(9, 8) /* MTL Rx FIFO Fill-level */
-#define GMAC_DEBUG_RXFSTS_SHIFT 8
#define GMAC_DEBUG_RXFSTS_EMPTY 0
#define GMAC_DEBUG_RXFSTS_BT 1
#define GMAC_DEBUG_RXFSTS_AT 2
#define GMAC_DEBUG_RXFSTS_FULL 3
#define GMAC_DEBUG_RRCSTS_MASK GENMASK(6, 5) /* MTL Rx FIFO Read Controller */
-#define GMAC_DEBUG_RRCSTS_SHIFT 5
#define GMAC_DEBUG_RRCSTS_IDLE 0
#define GMAC_DEBUG_RRCSTS_RDATA 1
#define GMAC_DEBUG_RRCSTS_RSTAT 2
@@ -178,7 +172,6 @@ enum inter_frame_gap {
#define GMAC_DEBUG_RWCSTS BIT(4) /* MTL Rx FIFO Write Controller Active */
/* MAC Receive Frame Controller FIFO Status */
#define GMAC_DEBUG_RFCFCSTS_MASK GENMASK(2, 1)
-#define GMAC_DEBUG_RFCFCSTS_SHIFT 1
/* MAC GMII or MII Receive Protocol Engine Status */
#define GMAC_DEBUG_RPESTS BIT(0)
@@ -188,8 +181,7 @@ enum inter_frame_gap {
#define DMA_BUS_MODE_DSL_MASK 0x0000007c /* Descriptor Skip Length */
#define DMA_BUS_MODE_DSL_SHIFT 2 /* (in DWORDS) */
/* Programmable burst length (passed thorugh platform)*/
-#define DMA_BUS_MODE_PBL_MASK 0x00003f00 /* Programmable Burst Len */
-#define DMA_BUS_MODE_PBL_SHIFT 8
+#define DMA_BUS_MODE_PBL_MASK GENMASK(13, 8) /* Programmable Burst Len */
#define DMA_BUS_MODE_ATDS 0x00000080 /* Alternate Descriptor Size */
enum rx_tx_priority_ratio {
@@ -200,8 +192,7 @@ enum rx_tx_priority_ratio {
#define DMA_BUS_MODE_FB 0x00010000 /* Fixed burst */
#define DMA_BUS_MODE_MB 0x04000000 /* Mixed burst */
-#define DMA_BUS_MODE_RPBL_MASK 0x007e0000 /* Rx-Programmable Burst Len */
-#define DMA_BUS_MODE_RPBL_SHIFT 17
+#define DMA_BUS_MODE_RPBL_MASK GENMASK(22, 17) /* Rx-Programmable Burst Len */
#define DMA_BUS_MODE_USP 0x00800000
#define DMA_BUS_MODE_MAXPBL 0x01000000
#define DMA_BUS_MODE_AAL 0x02000000
@@ -321,7 +312,6 @@ enum rtc_control {
/* PTP and timestamping registers */
#define GMAC3_X_ATSNS GENMASK(29, 25)
-#define GMAC3_X_ATSNS_SHIFT 25
#define GMAC_PTP_TCR_ATSFC BIT(24)
#define GMAC_PTP_TCR_ATSEN0 BIT(25)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c b/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c
index 2c5ee59c320864..5bf717188c92df 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c
@@ -240,7 +240,7 @@ static void dwmac1000_flow_ctrl(struct mac_device_info *hw, unsigned int duplex,
if (duplex) {
pr_debug("\tduplex mode: PAUSE %d\n", pause_time);
- flow |= (pause_time << GMAC_FLOW_CTRL_PT_SHIFT);
+ flow |= FIELD_PREP(GMAC_FLOW_CTRL_PT_MASK, pause_time);
}
writel(flow, ioaddr + GMAC_FLOW_CTRL);
@@ -386,8 +386,8 @@ static void dwmac1000_debug(struct stmmac_priv *priv, void __iomem *ioaddr,
if (value & GMAC_DEBUG_TWCSTS)
x->mmtl_fifo_ctrl++;
if (value & GMAC_DEBUG_TRCSTS_MASK) {
- u32 trcsts = (value & GMAC_DEBUG_TRCSTS_MASK)
- >> GMAC_DEBUG_TRCSTS_SHIFT;
+ u32 trcsts = FIELD_GET(GMAC_DEBUG_TRCSTS_MASK, value);
+
if (trcsts == GMAC_DEBUG_TRCSTS_WRITE)
x->mtl_tx_fifo_read_ctrl_write++;
else if (trcsts == GMAC_DEBUG_TRCSTS_TXW)
@@ -400,8 +400,7 @@ static void dwmac1000_debug(struct stmmac_priv *priv, void __iomem *ioaddr,
if (value & GMAC_DEBUG_TXPAUSED)
x->mac_tx_in_pause++;
if (value & GMAC_DEBUG_TFCSTS_MASK) {
- u32 tfcsts = (value & GMAC_DEBUG_TFCSTS_MASK)
- >> GMAC_DEBUG_TFCSTS_SHIFT;
+ u32 tfcsts = FIELD_GET(GMAC_DEBUG_TFCSTS_MASK, value);
if (tfcsts == GMAC_DEBUG_TFCSTS_XFER)
x->mac_tx_frame_ctrl_xfer++;
@@ -415,8 +414,7 @@ static void dwmac1000_debug(struct stmmac_priv *priv, void __iomem *ioaddr,
if (value & GMAC_DEBUG_TPESTS)
x->mac_gmii_tx_proto_engine++;
if (value & GMAC_DEBUG_RXFSTS_MASK) {
- u32 rxfsts = (value & GMAC_DEBUG_RXFSTS_MASK)
- >> GMAC_DEBUG_RRCSTS_SHIFT;
+ u32 rxfsts = FIELD_GET(GMAC_DEBUG_RXFSTS_MASK, value);
if (rxfsts == GMAC_DEBUG_RXFSTS_FULL)
x->mtl_rx_fifo_fill_level_full++;
@@ -428,8 +426,7 @@ static void dwmac1000_debug(struct stmmac_priv *priv, void __iomem *ioaddr,
x->mtl_rx_fifo_fill_level_empty++;
}
if (value & GMAC_DEBUG_RRCSTS_MASK) {
- u32 rrcsts = (value & GMAC_DEBUG_RRCSTS_MASK) >>
- GMAC_DEBUG_RRCSTS_SHIFT;
+ u32 rrcsts = FIELD_GET(GMAC_DEBUG_RRCSTS_MASK, value);
if (rrcsts == GMAC_DEBUG_RRCSTS_FLUSH)
x->mtl_rx_fifo_read_ctrl_flush++;
@@ -443,8 +440,8 @@ static void dwmac1000_debug(struct stmmac_priv *priv, void __iomem *ioaddr,
if (value & GMAC_DEBUG_RWCSTS)
x->mtl_rx_fifo_ctrl_active++;
if (value & GMAC_DEBUG_RFCFCSTS_MASK)
- x->mac_rx_frame_ctrl_fifo = (value & GMAC_DEBUG_RFCFCSTS_MASK)
- >> GMAC_DEBUG_RFCFCSTS_SHIFT;
+ x->mac_rx_frame_ctrl_fifo = FIELD_GET(GMAC_DEBUG_RFCFCSTS_MASK,
+ value);
if (value & GMAC_DEBUG_RPESTS)
x->mac_gmii_rx_proto_engine++;
}
@@ -540,7 +537,7 @@ void dwmac1000_timestamp_interrupt(struct stmmac_priv *priv)
if (!(priv->plat->flags & STMMAC_FLAG_EXT_SNAPSHOT_EN))
return;
- num_snapshot = (ts_status & GMAC3_X_ATSNS) >> GMAC3_X_ATSNS_SHIFT;
+ num_snapshot = FIELD_GET(GMAC3_X_ATSNS, ts_status);
for (i = 0; i < num_snapshot; i++) {
read_lock_irqsave(&priv->ptp_lock, flags);
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac1000_dma.c b/drivers/net/ethernet/stmicro/stmmac/dwmac1000_dma.c
index 118a22406a2e93..cacbf6d4365c71 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac1000_dma.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac1000_dma.c
@@ -29,13 +29,10 @@ static void dwmac1000_dma_axi(void __iomem *ioaddr, struct stmmac_axi *axi)
if (axi->axi_xit_frm)
value |= DMA_AXI_LPI_XIT_FRM;
- value &= ~DMA_AXI_WR_OSR_LMT;
- value |= (axi->axi_wr_osr_lmt & DMA_AXI_WR_OSR_LMT_MASK) <<
- DMA_AXI_WR_OSR_LMT_SHIFT;
-
- value &= ~DMA_AXI_RD_OSR_LMT;
- value |= (axi->axi_rd_osr_lmt & DMA_AXI_RD_OSR_LMT_MASK) <<
- DMA_AXI_RD_OSR_LMT_SHIFT;
+ value = u32_replace_bits(value, axi->axi_wr_osr_lmt,
+ DMA_AXI_WR_OSR_LMT);
+ value = u32_replace_bits(value, axi->axi_rd_osr_lmt,
+ DMA_AXI_RD_OSR_LMT);
/* Depending on the UNDEF bit the Master AXI will perform any burst
* length according to the BLEN programmed (by default all BLEN are
@@ -88,9 +85,8 @@ static void dwmac1000_dma_init_channel(struct stmmac_priv *priv,
if (dma_cfg->pblx8)
value |= DMA_BUS_MODE_MAXPBL;
value |= DMA_BUS_MODE_USP;
- value &= ~(DMA_BUS_MODE_PBL_MASK | DMA_BUS_MODE_RPBL_MASK);
- value |= (txpbl << DMA_BUS_MODE_PBL_SHIFT);
- value |= (rxpbl << DMA_BUS_MODE_RPBL_SHIFT);
+ value = u32_replace_bits(value, txpbl, DMA_BUS_MODE_PBL_MASK);
+ value = u32_replace_bits(value, rxpbl, DMA_BUS_MODE_RPBL_MASK);
/* Set the Fixed burst mode */
if (dma_cfg->fixed_burst)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac100_core.c b/drivers/net/ethernet/stmicro/stmmac/dwmac100_core.c
index 14e847c0e1a91d..dbc0c1019ed5e8 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac100_core.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac100_core.c
@@ -132,7 +132,7 @@ static void dwmac100_flow_ctrl(struct mac_device_info *hw, unsigned int duplex,
unsigned int flow = MAC_FLOW_CTRL_ENABLE;
if (duplex)
- flow |= (pause_time << MAC_FLOW_CTRL_PT_SHIFT);
+ flow |= FIELD_PREP(MAC_FLOW_CTRL_PT_MASK, pause_time);
writel(flow, ioaddr + MAC_FLOW_CTRL);
}
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac100_dma.c b/drivers/net/ethernet/stmicro/stmmac/dwmac100_dma.c
index 82957db47c9911..12b2bf2d739ab9 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac100_dma.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac100_dma.c
@@ -22,7 +22,8 @@ static void dwmac100_dma_init(void __iomem *ioaddr,
struct stmmac_dma_cfg *dma_cfg)
{
/* Enable Application Access by writing to DMA CSR0 */
- writel(DMA_BUS_MODE_DEFAULT | (dma_cfg->pbl << DMA_BUS_MODE_PBL_SHIFT),
+ writel(DMA_BUS_MODE_DEFAULT |
+ FIELD_PREP(DMA_BUS_MODE_PBL_MASK, dma_cfg->pbl),
ioaddr + DMA_BUS_MODE);
/* Mask interrupts by writing to CSR7 */
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4.h b/drivers/net/ethernet/stmicro/stmmac/dwmac4.h
index 3dec1a264cf609..7a6609185fd0c9 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac4.h
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4.h
@@ -95,7 +95,7 @@
/* MAC Flow Control TX */
#define GMAC_TX_FLOW_CTRL_TFE BIT(1)
-#define GMAC_TX_FLOW_CTRL_PT_SHIFT 16
+#define GMAC_TX_FLOW_CTRL_PT_MASK GENMASK(31, 16)
/* MAC Interrupt bitmap*/
#define GMAC_INT_RGSMIIS BIT(0)
@@ -145,23 +145,19 @@ enum power_event {
/* MAC Debug bitmap */
#define GMAC_DEBUG_TFCSTS_MASK GENMASK(18, 17)
-#define GMAC_DEBUG_TFCSTS_SHIFT 17
#define GMAC_DEBUG_TFCSTS_IDLE 0
#define GMAC_DEBUG_TFCSTS_WAIT 1
#define GMAC_DEBUG_TFCSTS_GEN_PAUSE 2
#define GMAC_DEBUG_TFCSTS_XFER 3
#define GMAC_DEBUG_TPESTS BIT(16)
#define GMAC_DEBUG_RFCFCSTS_MASK GENMASK(2, 1)
-#define GMAC_DEBUG_RFCFCSTS_SHIFT 1
#define GMAC_DEBUG_RPESTS BIT(0)
/* MAC config */
#define GMAC_CONFIG_ARPEN BIT(31)
#define GMAC_CONFIG_SARC GENMASK(30, 28)
-#define GMAC_CONFIG_SARC_SHIFT 28
#define GMAC_CONFIG_IPC BIT(27)
#define GMAC_CONFIG_IPG GENMASK(26, 24)
-#define GMAC_CONFIG_IPG_SHIFT 24
#define GMAC_CONFIG_2K BIT(22)
#define GMAC_CONFIG_ACS BIT(20)
#define GMAC_CONFIG_BE BIT(18)
@@ -169,7 +165,6 @@ enum power_event {
#define GMAC_CONFIG_JE BIT(16)
#define GMAC_CONFIG_PS BIT(15)
#define GMAC_CONFIG_FES BIT(14)
-#define GMAC_CONFIG_FES_SHIFT 14
#define GMAC_CONFIG_DM BIT(13)
#define GMAC_CONFIG_LM BIT(12)
#define GMAC_CONFIG_DCRS BIT(9)
@@ -178,11 +173,9 @@ enum power_event {
/* MAC extended config */
#define GMAC_CONFIG_EIPG GENMASK(29, 25)
-#define GMAC_CONFIG_EIPG_SHIFT 25
#define GMAC_CONFIG_EIPG_EN BIT(24)
#define GMAC_CONFIG_HDSMS GENMASK(22, 20)
-#define GMAC_CONFIG_HDSMS_SHIFT 20
-#define GMAC_CONFIG_HDSMS_256 (0x2 << GMAC_CONFIG_HDSMS_SHIFT)
+#define GMAC_CONFIG_HDSMS_256 FIELD_PREP_CONST(GMAC_CONFIG_HDSMS, 0x2)
/* MAC HW features0 bitmap */
#define GMAC_HW_FEAT_SAVLANINS BIT(27)
@@ -245,7 +238,6 @@ enum power_event {
/* MAC HW ADDR regs */
#define GMAC_HI_DCS GENMASK(18, 16)
-#define GMAC_HI_DCS_SHIFT 16
#define GMAC_HI_REG_AE BIT(31)
/* L3/L4 Filters regs */
@@ -260,7 +252,6 @@ enum power_event {
#define GMAC_L3SAM0 BIT(2)
#define GMAC_L3PEN0 BIT(0)
#define GMAC_L4DP0 GENMASK(31, 16)
-#define GMAC_L4DP0_SHIFT 16
#define GMAC_L4SP0 GENMASK(15, 0)
/* MAC Timestamp Status */
@@ -317,39 +308,32 @@ static inline u32 mtl_chanx_base_addr(const struct dwmac4_addrs *addrs,
#define MTL_OP_MODE_TSF BIT(1)
#define MTL_OP_MODE_TQS_MASK GENMASK(24, 16)
-#define MTL_OP_MODE_TQS_SHIFT 16
-#define MTL_OP_MODE_TTC_MASK 0x70
-#define MTL_OP_MODE_TTC_SHIFT 4
-
-#define MTL_OP_MODE_TTC_32 0
-#define MTL_OP_MODE_TTC_64 (1 << MTL_OP_MODE_TTC_SHIFT)
-#define MTL_OP_MODE_TTC_96 (2 << MTL_OP_MODE_TTC_SHIFT)
-#define MTL_OP_MODE_TTC_128 (3 << MTL_OP_MODE_TTC_SHIFT)
-#define MTL_OP_MODE_TTC_192 (4 << MTL_OP_MODE_TTC_SHIFT)
-#define MTL_OP_MODE_TTC_256 (5 << MTL_OP_MODE_TTC_SHIFT)
-#define MTL_OP_MODE_TTC_384 (6 << MTL_OP_MODE_TTC_SHIFT)
-#define MTL_OP_MODE_TTC_512 (7 << MTL_OP_MODE_TTC_SHIFT)
+#define MTL_OP_MODE_TTC_MASK GENMASK(6, 4)
+#define MTL_OP_MODE_TTC_32 FIELD_PREP(MTL_OP_MODE_TTC_MASK, 0)
+#define MTL_OP_MODE_TTC_64 FIELD_PREP(MTL_OP_MODE_TTC_MASK, 1)
+#define MTL_OP_MODE_TTC_96 FIELD_PREP(MTL_OP_MODE_TTC_MASK, 2)
+#define MTL_OP_MODE_TTC_128 FIELD_PREP(MTL_OP_MODE_TTC_MASK, 3)
+#define MTL_OP_MODE_TTC_192 FIELD_PREP(MTL_OP_MODE_TTC_MASK, 4)
+#define MTL_OP_MODE_TTC_256 FIELD_PREP(MTL_OP_MODE_TTC_MASK, 5)
+#define MTL_OP_MODE_TTC_384 FIELD_PREP(MTL_OP_MODE_TTC_MASK, 6)
+#define MTL_OP_MODE_TTC_512 FIELD_PREP(MTL_OP_MODE_TTC_MASK, 7)
#define MTL_OP_MODE_RQS_MASK GENMASK(29, 20)
-#define MTL_OP_MODE_RQS_SHIFT 20
#define MTL_OP_MODE_RFD_MASK GENMASK(19, 14)
-#define MTL_OP_MODE_RFD_SHIFT 14
#define MTL_OP_MODE_RFA_MASK GENMASK(13, 8)
-#define MTL_OP_MODE_RFA_SHIFT 8
#define MTL_OP_MODE_EHFC BIT(7)
#define MTL_OP_MODE_DIS_TCP_EF BIT(6)
#define MTL_OP_MODE_RTC_MASK GENMASK(1, 0)
-#define MTL_OP_MODE_RTC_SHIFT 0
-#define MTL_OP_MODE_RTC_32 (1 << MTL_OP_MODE_RTC_SHIFT)
-#define MTL_OP_MODE_RTC_64 0
-#define MTL_OP_MODE_RTC_96 (2 << MTL_OP_MODE_RTC_SHIFT)
-#define MTL_OP_MODE_RTC_128 (3 << MTL_OP_MODE_RTC_SHIFT)
+#define MTL_OP_MODE_RTC_32 FIELD_PREP(MTL_OP_MODE_RTC_MASK, 1)
+#define MTL_OP_MODE_RTC_64 FIELD_PREP(MTL_OP_MODE_RTC_MASK, 0)
+#define MTL_OP_MODE_RTC_96 FIELD_PREP(MTL_OP_MODE_RTC_MASK, 2)
+#define MTL_OP_MODE_RTC_128 FIELD_PREP(MTL_OP_MODE_RTC_MASK, 3)
/* MTL ETS Control register */
#define MTL_ETS_CTRL_BASE_ADDR 0x00000d10
@@ -454,7 +438,6 @@ static inline u32 mtl_low_credx_base_addr(const struct dwmac4_addrs *addrs,
/* MTL debug: Tx FIFO Read Controller Status */
#define MTL_DEBUG_TRCSTS_MASK GENMASK(2, 1)
-#define MTL_DEBUG_TRCSTS_SHIFT 1
#define MTL_DEBUG_TRCSTS_IDLE 0
#define MTL_DEBUG_TRCSTS_READ 1
#define MTL_DEBUG_TRCSTS_TXW 2
@@ -469,7 +452,6 @@ static inline u32 mtl_low_credx_base_addr(const struct dwmac4_addrs *addrs,
#define MTL_DEBUG_RXFSTS_AT 2
#define MTL_DEBUG_RXFSTS_FULL 3
#define MTL_DEBUG_RRCSTS_MASK GENMASK(2, 1)
-#define MTL_DEBUG_RRCSTS_SHIFT 1
#define MTL_DEBUG_RRCSTS_IDLE 0
#define MTL_DEBUG_RRCSTS_RDATA 1
#define MTL_DEBUG_RRCSTS_RSTAT 2
@@ -523,7 +505,6 @@ static inline u32 mtl_low_credx_base_addr(const struct dwmac4_addrs *addrs,
#define GMAC_PHYIF_CTRLSTATUS_SMIDRXS BIT(4)
#define GMAC_PHYIF_CTRLSTATUS_LNKMOD BIT(16)
#define GMAC_PHYIF_CTRLSTATUS_SPEED GENMASK(18, 17)
-#define GMAC_PHYIF_CTRLSTATUS_SPEED_SHIFT 17
#define GMAC_PHYIF_CTRLSTATUS_LNKSTS BIT(19)
#define GMAC_PHYIF_CTRLSTATUS_JABTO BIT(20)
#define GMAC_PHYIF_CTRLSTATUS_FALSECARDET BIT(21)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c b/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c
index 8a19df7b05775d..1f61177ece453c 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c
@@ -572,8 +572,8 @@ static void dwmac4_flow_ctrl(struct mac_device_info *hw, unsigned int duplex,
flow = GMAC_TX_FLOW_CTRL_TFE;
if (duplex)
- flow |=
- (pause_time << GMAC_TX_FLOW_CTRL_PT_SHIFT);
+ flow |= FIELD_PREP(GMAC_TX_FLOW_CTRL_PT_MASK,
+ pause_time);
writel(flow, ioaddr + GMAC_QX_TX_FLOW_CTRL(queue));
}
@@ -691,8 +691,8 @@ static void dwmac4_debug(struct stmmac_priv *priv, void __iomem *ioaddr,
if (value & MTL_DEBUG_TWCSTS)
x->mmtl_fifo_ctrl++;
if (value & MTL_DEBUG_TRCSTS_MASK) {
- u32 trcsts = (value & MTL_DEBUG_TRCSTS_MASK)
- >> MTL_DEBUG_TRCSTS_SHIFT;
+ u32 trcsts = FIELD_GET(MTL_DEBUG_TRCSTS_MASK, value);
+
if (trcsts == MTL_DEBUG_TRCSTS_WRITE)
x->mtl_tx_fifo_read_ctrl_write++;
else if (trcsts == MTL_DEBUG_TRCSTS_TXW)
@@ -723,8 +723,7 @@ static void dwmac4_debug(struct stmmac_priv *priv, void __iomem *ioaddr,
x->mtl_rx_fifo_fill_level_empty++;
}
if (value & MTL_DEBUG_RRCSTS_MASK) {
- u32 rrcsts = (value & MTL_DEBUG_RRCSTS_MASK) >>
- MTL_DEBUG_RRCSTS_SHIFT;
+ u32 rrcsts = FIELD_GET(MTL_DEBUG_RRCSTS_MASK, value);
if (rrcsts == MTL_DEBUG_RRCSTS_FLUSH)
x->mtl_rx_fifo_read_ctrl_flush++;
@@ -743,8 +742,7 @@ static void dwmac4_debug(struct stmmac_priv *priv, void __iomem *ioaddr,
value = readl(ioaddr + GMAC_DEBUG);
if (value & GMAC_DEBUG_TFCSTS_MASK) {
- u32 tfcsts = (value & GMAC_DEBUG_TFCSTS_MASK)
- >> GMAC_DEBUG_TFCSTS_SHIFT;
+ u32 tfcsts = FIELD_GET(GMAC_DEBUG_TFCSTS_MASK, value);
if (tfcsts == GMAC_DEBUG_TFCSTS_XFER)
x->mac_tx_frame_ctrl_xfer++;
@@ -758,8 +756,8 @@ static void dwmac4_debug(struct stmmac_priv *priv, void __iomem *ioaddr,
if (value & GMAC_DEBUG_TPESTS)
x->mac_gmii_tx_proto_engine++;
if (value & GMAC_DEBUG_RFCFCSTS_MASK)
- x->mac_rx_frame_ctrl_fifo = (value & GMAC_DEBUG_RFCFCSTS_MASK)
- >> GMAC_DEBUG_RFCFCSTS_SHIFT;
+ x->mac_rx_frame_ctrl_fifo = FIELD_GET(GMAC_DEBUG_RFCFCSTS_MASK,
+ value);
if (value & GMAC_DEBUG_RPESTS)
x->mac_gmii_rx_proto_engine++;
}
@@ -780,8 +778,7 @@ static void dwmac4_sarc_configure(void __iomem *ioaddr, int val)
{
u32 value = readl(ioaddr + GMAC_CONFIG);
- value &= ~GMAC_CONFIG_SARC;
- value |= val << GMAC_CONFIG_SARC_SHIFT;
+ value = u32_replace_bits(value, val, GMAC_CONFIG_SARC);
writel(value, ioaddr + GMAC_CONFIG);
}
@@ -889,9 +886,9 @@ static int dwmac4_config_l4_filter(struct mac_device_info *hw, u32 filter_no,
writel(value, ioaddr + GMAC_L3L4_CTRL(filter_no));
if (sa) {
- value = match & GMAC_L4SP0;
+ value = FIELD_PREP(GMAC_L4SP0, match);
} else {
- value = (match << GMAC_L4DP0_SHIFT) & GMAC_L4DP0;
+ value = FIELD_PREP(GMAC_L4DP0, match);
}
writel(value, ioaddr + GMAC_L4_ADDR(filter_no));
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.c b/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.c
index d87a8b595e6a3b..d17bcc31a89c96 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.c
@@ -28,13 +28,10 @@ static void dwmac4_dma_axi(void __iomem *ioaddr, struct stmmac_axi *axi)
if (axi->axi_xit_frm)
value |= DMA_AXI_LPI_XIT_FRM;
- value &= ~DMA_AXI_WR_OSR_LMT;
- value |= (axi->axi_wr_osr_lmt & DMA_AXI_OSR_MAX) <<
- DMA_AXI_WR_OSR_LMT_SHIFT;
-
- value &= ~DMA_AXI_RD_OSR_LMT;
- value |= (axi->axi_rd_osr_lmt & DMA_AXI_OSR_MAX) <<
- DMA_AXI_RD_OSR_LMT_SHIFT;
+ value = u32_replace_bits(value, axi->axi_wr_osr_lmt,
+ DMA_AXI_WR_OSR_LMT);
+ value = u32_replace_bits(value, axi->axi_rd_osr_lmt,
+ DMA_AXI_RD_OSR_LMT);
/* Depending on the UNDEF bit the Master AXI will perform any burst
* length according to the BLEN programmed (by default all BLEN are
@@ -79,7 +76,7 @@ static void dwmac4_dma_init_rx_chan(struct stmmac_priv *priv,
u32 rxpbl = dma_cfg->rxpbl ?: dma_cfg->pbl;
value = readl(ioaddr + DMA_CHAN_RX_CONTROL(dwmac4_addrs, chan));
- value = value | (rxpbl << DMA_BUS_MODE_RPBL_SHIFT);
+ value = value | FIELD_PREP(DMA_BUS_MODE_RPBL_MASK, rxpbl);
writel(value, ioaddr + DMA_CHAN_RX_CONTROL(dwmac4_addrs, chan));
if (IS_ENABLED(CONFIG_ARCH_DMA_ADDR_T_64BIT) && likely(dma_cfg->eame))
@@ -100,7 +97,7 @@ static void dwmac4_dma_init_tx_chan(struct stmmac_priv *priv,
u32 txpbl = dma_cfg->txpbl ?: dma_cfg->pbl;
value = readl(ioaddr + DMA_CHAN_TX_CONTROL(dwmac4_addrs, chan));
- value = value | (txpbl << DMA_BUS_MODE_PBL_SHIFT);
+ value = value | FIELD_PREP(DMA_BUS_MODE_PBL, txpbl);
/* Enable OSP to get best performance */
value |= DMA_CONTROL_OSP;
@@ -175,10 +172,9 @@ static void dwmac4_dma_init(void __iomem *ioaddr,
value = readl(ioaddr + DMA_BUS_MODE);
- if (dma_cfg->multi_msi_en) {
- value &= ~DMA_BUS_MODE_INTM_MASK;
- value |= (DMA_BUS_MODE_INTM_MODE1 << DMA_BUS_MODE_INTM_SHIFT);
- }
+ if (dma_cfg->multi_msi_en)
+ value = u32_replace_bits(value, DMA_BUS_MODE_INTM_MODE1,
+ DMA_BUS_MODE_INTM_MASK);
if (dma_cfg->dche)
value |= DMA_BUS_MODE_DCHE;
@@ -288,7 +284,7 @@ static void dwmac4_dma_rx_chan_op_mode(struct stmmac_priv *priv,
}
mtl_rx_op &= ~MTL_OP_MODE_RQS_MASK;
- mtl_rx_op |= rqs << MTL_OP_MODE_RQS_SHIFT;
+ mtl_rx_op |= FIELD_PREP(MTL_OP_MODE_RQS_MASK, rqs);
/* Enable flow control only if each channel gets 4 KiB or more FIFO and
* only if channel is not an AVB channel.
@@ -319,11 +315,10 @@ static void dwmac4_dma_rx_chan_op_mode(struct stmmac_priv *priv,
break;
}
- mtl_rx_op &= ~MTL_OP_MODE_RFD_MASK;
- mtl_rx_op |= rfd << MTL_OP_MODE_RFD_SHIFT;
-
- mtl_rx_op &= ~MTL_OP_MODE_RFA_MASK;
- mtl_rx_op |= rfa << MTL_OP_MODE_RFA_SHIFT;
+ mtl_rx_op = u32_replace_bits(mtl_rx_op, rfd,
+ MTL_OP_MODE_RFD_MASK);
+ mtl_rx_op = u32_replace_bits(mtl_rx_op, rfa,
+ MTL_OP_MODE_RFA_MASK);
}
writel(mtl_rx_op, ioaddr + MTL_CHAN_RX_OP_MODE(dwmac4_addrs, channel));
@@ -378,8 +373,8 @@ static void dwmac4_dma_tx_chan_op_mode(struct stmmac_priv *priv,
mtl_tx_op |= MTL_OP_MODE_TXQEN;
else
mtl_tx_op |= MTL_OP_MODE_TXQEN_AV;
- mtl_tx_op &= ~MTL_OP_MODE_TQS_MASK;
- mtl_tx_op |= tqs << MTL_OP_MODE_TQS_SHIFT;
+
+ mtl_tx_op = u32_replace_bits(mtl_tx_op, tqs, MTL_OP_MODE_TQS_MASK);
writel(mtl_tx_op, ioaddr + MTL_CHAN_TX_OP_MODE(dwmac4_addrs, channel));
}
@@ -520,8 +515,7 @@ static void dwmac4_set_bfsize(struct stmmac_priv *priv, void __iomem *ioaddr,
const struct dwmac4_addrs *dwmac4_addrs = priv->plat->dwmac4_addrs;
u32 value = readl(ioaddr + DMA_CHAN_RX_CONTROL(dwmac4_addrs, chan));
- value &= ~DMA_RBSZ_MASK;
- value |= (bfsize << DMA_RBSZ_SHIFT) & DMA_RBSZ_MASK;
+ value = u32_replace_bits(value, bfsize, DMA_RBSZ_MASK);
writel(value, ioaddr + DMA_CHAN_RX_CONTROL(dwmac4_addrs, chan));
}
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.h b/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.h
index 4f980dcd395823..7573ca2db352da 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.h
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.h
@@ -27,15 +27,13 @@
/* DMA Bus Mode bitmap */
#define DMA_BUS_MODE_DCHE BIT(19)
#define DMA_BUS_MODE_INTM_MASK GENMASK(17, 16)
-#define DMA_BUS_MODE_INTM_SHIFT 16
#define DMA_BUS_MODE_INTM_MODE1 0x1
#define DMA_BUS_MODE_SFT_RESET BIT(0)
/* DMA SYS Bus Mode bitmap */
#define DMA_BUS_MODE_SPH BIT(24)
#define DMA_BUS_MODE_PBL BIT(16)
-#define DMA_BUS_MODE_PBL_SHIFT 16
-#define DMA_BUS_MODE_RPBL_SHIFT 16
+#define DMA_BUS_MODE_RPBL_MASK GENMASK(21, 16)
#define DMA_BUS_MODE_MB BIT(14)
#define DMA_BUS_MODE_FB BIT(0)
@@ -59,13 +57,7 @@
#define DMA_AXI_EN_LPI BIT(31)
#define DMA_AXI_LPI_XIT_FRM BIT(30)
#define DMA_AXI_WR_OSR_LMT GENMASK(27, 24)
-#define DMA_AXI_WR_OSR_LMT_SHIFT 24
#define DMA_AXI_RD_OSR_LMT GENMASK(19, 16)
-#define DMA_AXI_RD_OSR_LMT_SHIFT 16
-
-#define DMA_AXI_OSR_MAX 0xf
-#define DMA_AXI_MAX_OSR_LIMIT ((DMA_AXI_OSR_MAX << DMA_AXI_WR_OSR_LMT_SHIFT) | \
- (DMA_AXI_OSR_MAX << DMA_AXI_RD_OSR_LMT_SHIFT))
#define DMA_SYS_BUS_MB BIT(14)
#define DMA_AXI_1KBBE BIT(13)
@@ -146,7 +138,6 @@ static inline u32 dma_chanx_base_addr(const struct dwmac4_addrs *addrs,
/* DMA Rx Channel X Control register defines */
#define DMA_CONTROL_SR BIT(0)
#define DMA_RBSZ_MASK GENMASK(14, 1)
-#define DMA_RBSZ_SHIFT 1
/* Interrupt status per channel */
#define DMA_CHAN_STATUS_REB GENMASK(21, 19)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4_lib.c b/drivers/net/ethernet/stmicro/stmmac/dwmac4_lib.c
index 57c03d49177447..c098047a3bff8a 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac4_lib.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4_lib.c
@@ -234,7 +234,7 @@ void stmmac_dwmac4_set_mac_addr(void __iomem *ioaddr, const u8 addr[6],
* bit that has no effect on the High Reg 0 where the bit 31 (MO)
* is RO.
*/
- data |= (STMMAC_CHAN0 << GMAC_HI_DCS_SHIFT);
+ data |= FIELD_PREP(GMAC_HI_DCS, STMMAC_CHAN0);
writel(data | GMAC_HI_REG_AE, ioaddr + high);
data = (addr[3] << 24) | (addr[2] << 16) | (addr[1] << 8) | addr[0];
writel(data, ioaddr + low);
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac_dma.h b/drivers/net/ethernet/stmicro/stmmac/dwmac_dma.h
index 5d9c18f5bbf587..14cfe0de3327ae 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac_dma.h
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac_dma.h
@@ -59,11 +59,7 @@ static inline u32 dma_chan_base_addr(u32 base, u32 chan)
#define DMA_AXI_EN_LPI BIT(31)
#define DMA_AXI_LPI_XIT_FRM BIT(30)
#define DMA_AXI_WR_OSR_LMT GENMASK(23, 20)
-#define DMA_AXI_WR_OSR_LMT_SHIFT 20
-#define DMA_AXI_WR_OSR_LMT_MASK 0xf
#define DMA_AXI_RD_OSR_LMT GENMASK(19, 16)
-#define DMA_AXI_RD_OSR_LMT_SHIFT 16
-#define DMA_AXI_RD_OSR_LMT_MASK 0xf
#define DMA_AXI_OSR_MAX 0xf
#define DMA_AXI_MAX_OSR_LIMIT ((DMA_AXI_OSR_MAX << DMA_AXI_WR_OSR_LMT_SHIFT) | \
@@ -132,10 +128,8 @@ static inline u32 dma_chan_base_addr(u32 base, u32 chan)
#define DMA_STATUS_EB_MASK 0x00380000 /* Error Bits Mask */
#define DMA_STATUS_EB_TX_ABORT 0x00080000 /* Error Bits - TX Abort */
#define DMA_STATUS_EB_RX_ABORT 0x00100000 /* Error Bits - RX Abort */
-#define DMA_STATUS_TS_MASK 0x00700000 /* Transmit Process State */
-#define DMA_STATUS_TS_SHIFT 20
-#define DMA_STATUS_RS_MASK 0x000e0000 /* Receive Process State */
-#define DMA_STATUS_RS_SHIFT 17
+#define DMA_STATUS_TS_MASK GENMASK(22, 20) /* Transmit Process State */
+#define DMA_STATUS_RS_MASK GENMASK(19, 17) /* Receive Process State */
#define DMA_STATUS_NIS 0x00010000 /* Normal Interrupt Summary */
#define DMA_STATUS_AIS 0x00008000 /* Abnormal Interrupt Summary */
#define DMA_STATUS_ERI 0x00004000 /* Early Receive Interrupt */
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac_lib.c b/drivers/net/ethernet/stmicro/stmmac/dwmac_lib.c
index 467f1a05747ecf..2e979f07566500 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac_lib.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac_lib.c
@@ -92,10 +92,7 @@ void dwmac_dma_stop_rx(struct stmmac_priv *priv, void __iomem *ioaddr, u32 chan)
#ifdef DWMAC_DMA_DEBUG
static void show_tx_process_state(unsigned int status)
{
- unsigned int state;
- state = (status & DMA_STATUS_TS_MASK) >> DMA_STATUS_TS_SHIFT;
-
- switch (state) {
+ switch (FIELD_GET(DMA_STATUS_TS_MASK, status)) {
case 0:
pr_debug("- TX (Stopped): Reset or Stop command\n");
break;
@@ -123,10 +120,7 @@ static void show_tx_process_state(unsigned int status)
static void show_rx_process_state(unsigned int status)
{
- unsigned int state;
- state = (status & DMA_STATUS_RS_MASK) >> DMA_STATUS_RS_SHIFT;
-
- switch (state) {
+ switch (FIELD_GET(DMA_STATUS_RS_MASK, status)) {
case 0:
pr_debug("- RX (Stopped): Reset or Stop command\n");
break;
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h
index e48cfa05000c07..67e2d539c33853 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h
+++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h
@@ -24,17 +24,15 @@
#define XGMAC_CONFIG_SS_2500 (0x6 << XGMAC_CONFIG_SS_OFF)
#define XGMAC_CONFIG_SS_10_MII (0x7 << XGMAC_CONFIG_SS_OFF)
#define XGMAC_CONFIG_SARC GENMASK(22, 20)
-#define XGMAC_CONFIG_SARC_SHIFT 20
#define XGMAC_CONFIG_JD BIT(16)
#define XGMAC_CONFIG_TE BIT(0)
#define XGMAC_CORE_INIT_TX (XGMAC_CONFIG_JD)
#define XGMAC_RX_CONFIG 0x00000004
#define XGMAC_CONFIG_ARPEN BIT(31)
#define XGMAC_CONFIG_GPSL GENMASK(29, 16)
-#define XGMAC_CONFIG_GPSL_SHIFT 16
#define XGMAC_CONFIG_HDSMS GENMASK(14, 12)
#define XGMAC_CONFIG_HDSMS_SHIFT 12
-#define XGMAC_CONFIG_HDSMS_256 (0x2 << XGMAC_CONFIG_HDSMS_SHIFT)
+#define XGMAC_CONFIG_HDSMS_256 FIELD_PREP(XGMAC_CONFIG_HDSMS, 0x2)
#define XGMAC_CONFIG_S2KP BIT(11)
#define XGMAC_CONFIG_LM BIT(10)
#define XGMAC_CONFIG_IPC BIT(9)
@@ -44,8 +42,10 @@
#define XGMAC_CONFIG_CST BIT(2)
#define XGMAC_CONFIG_ACS BIT(1)
#define XGMAC_CONFIG_RE BIT(0)
-#define XGMAC_CORE_INIT_RX (XGMAC_CONFIG_GPSLCE | XGMAC_CONFIG_WD | \
- (XGMAC_JUMBO_LEN << XGMAC_CONFIG_GPSL_SHIFT))
+#define XGMAC_CORE_INIT_RX (XGMAC_CONFIG_GPSLCE | \
+ XGMAC_CONFIG_WD | \
+ FIELD_PREP(XGMAC_CONFIG_GPSL, \
+ XGMAC_JUMBO_LEN))
#define XGMAC_PACKET_FILTER 0x00000008
#define XGMAC_FILTER_RA BIT(31)
#define XGMAC_FILTER_IPFE BIT(20)
@@ -90,7 +90,6 @@
#define XGMAC_INT_DEFAULT_EN (XGMAC_LPIIE | XGMAC_PMTIE)
#define XGMAC_Qx_TX_FLOW_CTRL(x) (0x00000070 + (x) * 4)
#define XGMAC_PT GENMASK(31, 16)
-#define XGMAC_PT_SHIFT 16
#define XGMAC_TFE BIT(1)
#define XGMAC_RX_FLOW_CTRL 0x00000090
#define XGMAC_RFE BIT(0)
@@ -180,12 +179,11 @@
#define XGMAC_ADDR_MAX 32
#define XGMAC_AE BIT(31)
#define XGMAC_DCS GENMASK(19, 16)
-#define XGMAC_DCS_SHIFT 16
#define XGMAC_ADDRx_LOW(x) (0x00000304 + (x) * 0x8)
#define XGMAC_L3L4_ADDR_CTRL 0x00000c00
#define XGMAC_IDDR GENMASK(16, 8)
-#define XGMAC_IDDR_SHIFT 8
-#define XGMAC_IDDR_FNUM 4
+#define XGMAC_IDDR_FNUM_MASK GENMASK(7, 4) /* FNUM within IDDR */
+#define XGMAC_IDDR_REG_MASK GENMASK(3, 0) /* REG within IDDR */
#define XGMAC_TT BIT(1)
#define XGMAC_XB BIT(0)
#define XGMAC_L3L4_DATA 0x00000c04
@@ -204,7 +202,6 @@
#define XGMAC_L3PEN0 BIT(0)
#define XGMAC_L4_ADDR 0x1
#define XGMAC_L4DP0 GENMASK(31, 16)
-#define XGMAC_L4DP0_SHIFT 16
#define XGMAC_L4SP0 GENMASK(15, 0)
#define XGMAC_L3_ADDR0 0x4
#define XGMAC_L3_ADDR1 0x5
@@ -224,7 +221,6 @@
#define XGMAC_RSS_DATA 0x00000c8c
#define XGMAC_TIMESTAMP_STATUS 0x00000d20
#define XGMAC_TIMESTAMP_ATSNS_MASK GENMASK(29, 25)
-#define XGMAC_TIMESTAMP_ATSNS_SHIFT 25
#define XGMAC_TXTSC BIT(15)
#define XGMAC_TXTIMESTAMP_NSEC 0x00000d30
#define XGMAC_TXTSSTSLO GENMASK(30, 0)
@@ -290,13 +286,9 @@
#define XGMAC_DPP_DISABLE BIT(0)
#define XGMAC_MTL_TXQ_OPMODE(x) (0x00001100 + (0x80 * (x)))
#define XGMAC_TQS GENMASK(25, 16)
-#define XGMAC_TQS_SHIFT 16
#define XGMAC_Q2TCMAP GENMASK(10, 8)
-#define XGMAC_Q2TCMAP_SHIFT 8
#define XGMAC_TTC GENMASK(6, 4)
-#define XGMAC_TTC_SHIFT 4
#define XGMAC_TXQEN GENMASK(3, 2)
-#define XGMAC_TXQEN_SHIFT 2
#define XGMAC_TSF BIT(1)
#define XGMAC_MTL_TCx_ETS_CONTROL(x) (0x00001110 + (0x80 * (x)))
#define XGMAC_MTL_TCx_QUANTUM_WEIGHT(x) (0x00001118 + (0x80 * (x)))
@@ -310,16 +302,12 @@
#define XGMAC_ETS (0x2 << 0)
#define XGMAC_MTL_RXQ_OPMODE(x) (0x00001140 + (0x80 * (x)))
#define XGMAC_RQS GENMASK(25, 16)
-#define XGMAC_RQS_SHIFT 16
#define XGMAC_EHFC BIT(7)
#define XGMAC_RSF BIT(5)
#define XGMAC_RTC GENMASK(1, 0)
-#define XGMAC_RTC_SHIFT 0
#define XGMAC_MTL_RXQ_FLOW_CONTROL(x) (0x00001150 + (0x80 * (x)))
#define XGMAC_RFD GENMASK(31, 17)
-#define XGMAC_RFD_SHIFT 17
#define XGMAC_RFA GENMASK(15, 1)
-#define XGMAC_RFA_SHIFT 1
#define XGMAC_MTL_QINTEN(x) (0x00001170 + (0x80 * (x)))
#define XGMAC_RXOIE BIT(16)
#define XGMAC_MTL_QINT_STATUS(x) (0x00001174 + (0x80 * (x)))
@@ -333,9 +321,7 @@
#define XGMAC_SWR BIT(0)
#define XGMAC_DMA_SYSBUS_MODE 0x00003004
#define XGMAC_WR_OSR_LMT GENMASK(29, 24)
-#define XGMAC_WR_OSR_LMT_SHIFT 24
#define XGMAC_RD_OSR_LMT GENMASK(21, 16)
-#define XGMAC_RD_OSR_LMT_SHIFT 16
#define XGMAC_EN_LPI BIT(15)
#define XGMAC_LPI_XIT_PKT BIT(14)
#define XGMAC_AAL BIT(12)
@@ -377,15 +363,12 @@
#define XGMAC_DMA_CH_TX_CONTROL(x) (0x00003104 + (0x80 * (x)))
#define XGMAC_EDSE BIT(28)
#define XGMAC_TxPBL GENMASK(21, 16)
-#define XGMAC_TxPBL_SHIFT 16
#define XGMAC_TSE BIT(12)
#define XGMAC_OSP BIT(4)
#define XGMAC_TXST BIT(0)
#define XGMAC_DMA_CH_RX_CONTROL(x) (0x00003108 + (0x80 * (x)))
#define XGMAC_RxPBL GENMASK(21, 16)
-#define XGMAC_RxPBL_SHIFT 16
#define XGMAC_RBSZ GENMASK(14, 1)
-#define XGMAC_RBSZ_SHIFT 1
#define XGMAC_RXST BIT(0)
#define XGMAC_DMA_CH_TxDESC_HADDR(x) (0x00003110 + (0x80 * (x)))
#define XGMAC_DMA_CH_TxDESC_LADDR(x) (0x00003114 + (0x80 * (x)))
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c
index 00e929bf280bae..2c10302f53abe4 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c
@@ -376,7 +376,7 @@ static void dwxgmac2_flow_ctrl(struct mac_device_info *hw, unsigned int duplex,
u32 value = XGMAC_TFE;
if (duplex)
- value |= pause_time << XGMAC_PT_SHIFT;
+ value |= FIELD_PREP(XGMAC_PT, pause_time);
writel(value, ioaddr + XGMAC_Qx_TX_FLOW_CTRL(i));
}
@@ -1233,8 +1233,7 @@ static void dwxgmac2_sarc_configure(void __iomem *ioaddr, int val)
{
u32 value = readl(ioaddr + XGMAC_TX_CONFIG);
- value &= ~XGMAC_CONFIG_SARC;
- value |= val << XGMAC_CONFIG_SARC_SHIFT;
+ value = u32_replace_bits(value, val, XGMAC_CONFIG_SARC);
writel(value, ioaddr + XGMAC_TX_CONFIG);
}
@@ -1254,14 +1253,16 @@ static int dwxgmac2_filter_read(struct mac_device_info *hw, u32 filter_no,
u8 reg, u32 *data)
{
void __iomem *ioaddr = hw->pcsr;
- u32 value;
+ u32 value, iddr;
int ret;
ret = dwxgmac2_filter_wait(hw);
if (ret)
return ret;
- value = ((filter_no << XGMAC_IDDR_FNUM) | reg) << XGMAC_IDDR_SHIFT;
+ iddr = FIELD_PREP(XGMAC_IDDR_FNUM_MASK, filter_no) |
+ FIELD_PREP(XGMAC_IDDR_REG_MASK, reg);
+ value = FIELD_PREP(XGMAC_IDDR, iddr);
value |= XGMAC_TT | XGMAC_XB;
writel(value, ioaddr + XGMAC_L3L4_ADDR_CTRL);
@@ -1277,7 +1278,7 @@ static int dwxgmac2_filter_write(struct mac_device_info *hw, u32 filter_no,
u8 reg, u32 data)
{
void __iomem *ioaddr = hw->pcsr;
- u32 value;
+ u32 value, iddr;
int ret;
ret = dwxgmac2_filter_wait(hw);
@@ -1286,7 +1287,9 @@ static int dwxgmac2_filter_write(struct mac_device_info *hw, u32 filter_no,
writel(data, ioaddr + XGMAC_L3L4_DATA);
- value = ((filter_no << XGMAC_IDDR_FNUM) | reg) << XGMAC_IDDR_SHIFT;
+ iddr = FIELD_PREP(XGMAC_IDDR_FNUM_MASK, filter_no) |
+ FIELD_PREP(XGMAC_IDDR_REG_MASK, reg);
+ value = FIELD_PREP(XGMAC_IDDR, iddr);
value |= XGMAC_XB;
writel(value, ioaddr + XGMAC_L3L4_ADDR_CTRL);
@@ -1395,13 +1398,13 @@ static int dwxgmac2_config_l4_filter(struct mac_device_info *hw, u32 filter_no,
return ret;
if (sa) {
- value = match & XGMAC_L4SP0;
+ value = FIELD_PREP(XGMAC_L4SP0, match);
ret = dwxgmac2_filter_write(hw, filter_no, XGMAC_L4_ADDR, value);
if (ret)
return ret;
} else {
- value = (match << XGMAC_L4DP0_SHIFT) & XGMAC_L4DP0;
+ value = FIELD_PREP(XGMAC_L4DP0, match);
ret = dwxgmac2_filter_write(hw, filter_no, XGMAC_L4_ADDR, value);
if (ret)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c
index 4d6bb995d8d84c..964ce2d7331696 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c
@@ -55,8 +55,7 @@ static void dwxgmac2_dma_init_rx_chan(struct stmmac_priv *priv,
u32 value;
value = readl(ioaddr + XGMAC_DMA_CH_RX_CONTROL(chan));
- value &= ~XGMAC_RxPBL;
- value |= (rxpbl << XGMAC_RxPBL_SHIFT) & XGMAC_RxPBL;
+ value = u32_replace_bits(value, rxpbl, XGMAC_RxPBL);
writel(value, ioaddr + XGMAC_DMA_CH_RX_CONTROL(chan));
writel(upper_32_bits(phy), ioaddr + XGMAC_DMA_CH_RxDESC_HADDR(chan));
@@ -72,9 +71,7 @@ static void dwxgmac2_dma_init_tx_chan(struct stmmac_priv *priv,
u32 value;
value = readl(ioaddr + XGMAC_DMA_CH_TX_CONTROL(chan));
- value &= ~XGMAC_TxPBL;
- value |= (txpbl << XGMAC_TxPBL_SHIFT) & XGMAC_TxPBL;
- value |= XGMAC_OSP;
+ value = u32_replace_bits(value, txpbl, XGMAC_TxPBL);
writel(value, ioaddr + XGMAC_DMA_CH_TX_CONTROL(chan));
writel(upper_32_bits(phy), ioaddr + XGMAC_DMA_CH_TxDESC_HADDR(chan));
@@ -91,13 +88,8 @@ static void dwxgmac2_dma_axi(void __iomem *ioaddr, struct stmmac_axi *axi)
if (axi->axi_xit_frm)
value |= XGMAC_LPI_XIT_PKT;
- value &= ~XGMAC_WR_OSR_LMT;
- value |= (axi->axi_wr_osr_lmt << XGMAC_WR_OSR_LMT_SHIFT) &
- XGMAC_WR_OSR_LMT;
-
- value &= ~XGMAC_RD_OSR_LMT;
- value |= (axi->axi_rd_osr_lmt << XGMAC_RD_OSR_LMT_SHIFT) &
- XGMAC_RD_OSR_LMT;
+ value = u32_replace_bits(value, axi->axi_wr_osr_lmt, XGMAC_WR_OSR_LMT);
+ value = u32_replace_bits(value, axi->axi_rd_osr_lmt, XGMAC_RD_OSR_LMT);
if (!axi->axi_fb)
value |= XGMAC_UNDEF;
@@ -148,23 +140,24 @@ static void dwxgmac2_dma_rx_mode(struct stmmac_priv *priv, void __iomem *ioaddr,
{
u32 value = readl(ioaddr + XGMAC_MTL_RXQ_OPMODE(channel));
unsigned int rqs = fifosz / 256 - 1;
+ unsigned int rtc;
if (mode == SF_DMA_MODE) {
value |= XGMAC_RSF;
} else {
value &= ~XGMAC_RSF;
- value &= ~XGMAC_RTC;
if (mode <= 64)
- value |= 0x0 << XGMAC_RTC_SHIFT;
+ rtc = 0x0;
else if (mode <= 96)
- value |= 0x2 << XGMAC_RTC_SHIFT;
+ rtc = 0x2;
else
- value |= 0x3 << XGMAC_RTC_SHIFT;
+ rtc = 0x3;
+
+ value = u32_replace_bits(value, rtc, XGMAC_RTC);
}
- value &= ~XGMAC_RQS;
- value |= (rqs << XGMAC_RQS_SHIFT) & XGMAC_RQS;
+ value = u32_replace_bits(value, rqs, XGMAC_RQS);
if ((fifosz >= 4096) && (qmode != MTL_QUEUE_AVB)) {
u32 flow = readl(ioaddr + XGMAC_MTL_RXQ_FLOW_CONTROL(channel));
@@ -193,11 +186,8 @@ static void dwxgmac2_dma_rx_mode(struct stmmac_priv *priv, void __iomem *ioaddr,
break;
}
- flow &= ~XGMAC_RFD;
- flow |= rfd << XGMAC_RFD_SHIFT;
-
- flow &= ~XGMAC_RFA;
- flow |= rfa << XGMAC_RFA_SHIFT;
+ flow = u32_replace_bits(flow, rfd, XGMAC_RFD);
+ flow = u32_replace_bits(flow, rfa, XGMAC_RFA);
writel(flow, ioaddr + XGMAC_MTL_RXQ_FLOW_CONTROL(channel));
}
@@ -210,40 +200,41 @@ static void dwxgmac2_dma_tx_mode(struct stmmac_priv *priv, void __iomem *ioaddr,
{
u32 value = readl(ioaddr + XGMAC_MTL_TXQ_OPMODE(channel));
unsigned int tqs = fifosz / 256 - 1;
+ unsigned int ttc, txqen;
if (mode == SF_DMA_MODE) {
value |= XGMAC_TSF;
} else {
value &= ~XGMAC_TSF;
- value &= ~XGMAC_TTC;
if (mode <= 64)
- value |= 0x0 << XGMAC_TTC_SHIFT;
+ ttc = 0x0;
else if (mode <= 96)
- value |= 0x2 << XGMAC_TTC_SHIFT;
+ ttc = 0x2;
else if (mode <= 128)
- value |= 0x3 << XGMAC_TTC_SHIFT;
+ ttc = 0x3;
else if (mode <= 192)
- value |= 0x4 << XGMAC_TTC_SHIFT;
+ ttc = 0x4;
else if (mode <= 256)
- value |= 0x5 << XGMAC_TTC_SHIFT;
+ ttc = 0x5;
else if (mode <= 384)
- value |= 0x6 << XGMAC_TTC_SHIFT;
+ ttc = 0x6;
else
- value |= 0x7 << XGMAC_TTC_SHIFT;
+ ttc = 0x7;
+
+ value = u32_replace_bits(value, ttc, XGMAC_TTC);
}
/* Use static TC to Queue mapping */
- value |= (channel << XGMAC_Q2TCMAP_SHIFT) & XGMAC_Q2TCMAP;
+ value |= FIELD_PREP(XGMAC_Q2TCMAP, channel);
- value &= ~XGMAC_TXQEN;
if (qmode != MTL_QUEUE_AVB)
- value |= 0x2 << XGMAC_TXQEN_SHIFT;
+ txqen = 0x2;
else
- value |= 0x1 << XGMAC_TXQEN_SHIFT;
+ txqen = 0x1;
- value &= ~XGMAC_TQS;
- value |= (tqs << XGMAC_TQS_SHIFT) & XGMAC_TQS;
+ value = u32_replace_bits(value, txqen, XGMAC_TXQEN);
+ value = u32_replace_bits(value, tqs, XGMAC_TQS);
writel(value, ioaddr + XGMAC_MTL_TXQ_OPMODE(channel));
}
@@ -547,16 +538,17 @@ static void dwxgmac2_qmode(struct stmmac_priv *priv, void __iomem *ioaddr,
{
u32 value = readl(ioaddr + XGMAC_MTL_TXQ_OPMODE(channel));
u32 flow = readl(ioaddr + XGMAC_RX_FLOW_CTRL);
+ unsigned int txqen;
- value &= ~XGMAC_TXQEN;
if (qmode != MTL_QUEUE_AVB) {
- value |= 0x2 << XGMAC_TXQEN_SHIFT;
+ txqen = 0x2;
writel(0, ioaddr + XGMAC_MTL_TCx_ETS_CONTROL(channel));
} else {
- value |= 0x1 << XGMAC_TXQEN_SHIFT;
+ txqen = 0x1;
writel(flow & (~XGMAC_RFE), ioaddr + XGMAC_RX_FLOW_CTRL);
}
+ value = u32_replace_bits(value, txqen, XGMAC_TXQEN);
writel(value, ioaddr + XGMAC_MTL_TXQ_OPMODE(channel));
}
@@ -566,8 +558,7 @@ static void dwxgmac2_set_bfsize(struct stmmac_priv *priv, void __iomem *ioaddr,
u32 value;
value = readl(ioaddr + XGMAC_DMA_CH_RX_CONTROL(chan));
- value &= ~XGMAC_RBSZ;
- value |= bfsize << XGMAC_RBSZ_SHIFT;
+ value = u32_replace_bits(value, bfsize, XGMAC_RBSZ);
writel(value, ioaddr + XGMAC_DMA_CH_RX_CONTROL(chan));
}
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 291/675] net: stmmac: xgmac: fix l4 filter port overwrite on register update
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (289 preceding siblings ...)
2026-07-30 14:10 ` [PATCH 6.18 290/675] net: stmmac: cores: remove many xxx_SHIFT definitions Greg Kroah-Hartman
@ 2026-07-30 14:10 ` Greg Kroah-Hartman
2026-07-30 14:10 ` [PATCH 6.18 292/675] net: stmmac: fix l3l4 filter rejecting unsupported offload requests Greg Kroah-Hartman
` (388 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:10 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Rohan G Thomas, Nazim Amirul,
Maxime Chevallier, Jakub Raczynski, Paolo Abeni, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Nazim Amirul <muhammad.nazim.amirul.nazle.asmade@altera.com>
[ Upstream commit 9fcf274d93af17396f20cccb63f1d4c17492a000 ]
The XGMAC_L4_ADDR register holds both source and destination port
match values. The current implementation overwrites the entire register
when configuring either port, so setting one silently erases the other.
Fix this by reading the register first, then masking and updating only
the relevant field before writing back.
Fixes: 425eabddaf0f ("net: stmmac: Implement L3/L4 Filters using TC Flower")
Signed-off-by: Rohan G Thomas <rohan.g.thomas@altera.com>
Signed-off-by: Nazim Amirul <muhammad.nazim.amirul.nazle.asmade@altera.com>
Reviewed-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Link: https://patch.msgid.link/20260714023716.29865-3-muhammad.nazim.amirul.nazle.asmade@altera.com
Reviewed-by: Jakub Raczynski <j.raczynski@samsung.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
.../ethernet/stmicro/stmmac/dwxgmac2_core.c | 28 +++++++++++--------
1 file changed, 16 insertions(+), 12 deletions(-)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c
index 2c10302f53abe4..ee41c77426f1ab 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c
@@ -1381,36 +1381,40 @@ static int dwxgmac2_config_l4_filter(struct mac_device_info *hw, u32 filter_no,
value &= ~XGMAC_L4PEN0;
}
- value &= ~(XGMAC_L4SPM0 | XGMAC_L4SPIM0);
- value &= ~(XGMAC_L4DPM0 | XGMAC_L4DPIM0);
if (sa) {
value |= XGMAC_L4SPM0;
if (inv)
value |= XGMAC_L4SPIM0;
+ else
+ value &= ~XGMAC_L4SPIM0;
} else {
value |= XGMAC_L4DPM0;
if (inv)
value |= XGMAC_L4DPIM0;
+ else
+ value &= ~XGMAC_L4DPIM0;
}
ret = dwxgmac2_filter_write(hw, filter_no, XGMAC_L3L4_CTRL, value);
if (ret)
return ret;
- if (sa) {
- value = FIELD_PREP(XGMAC_L4SP0, match);
+ ret = dwxgmac2_filter_read(hw, filter_no, XGMAC_L4_ADDR, &value);
+ if (ret)
+ return ret;
- ret = dwxgmac2_filter_write(hw, filter_no, XGMAC_L4_ADDR, value);
- if (ret)
- return ret;
+ if (sa) {
+ value &= ~XGMAC_L4SP0;
+ value |= FIELD_PREP(XGMAC_L4SP0, match);
} else {
- value = FIELD_PREP(XGMAC_L4DP0, match);
-
- ret = dwxgmac2_filter_write(hw, filter_no, XGMAC_L4_ADDR, value);
- if (ret)
- return ret;
+ value &= ~XGMAC_L4DP0;
+ value |= FIELD_PREP(XGMAC_L4DP0, match);
}
+ ret = dwxgmac2_filter_write(hw, filter_no, XGMAC_L4_ADDR, value);
+ if (ret)
+ return ret;
+
if (!en)
return dwxgmac2_filter_write(hw, filter_no, XGMAC_L3L4_CTRL, 0);
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 292/675] net: stmmac: fix l3l4 filter rejecting unsupported offload requests
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (290 preceding siblings ...)
2026-07-30 14:10 ` [PATCH 6.18 291/675] net: stmmac: xgmac: fix l4 filter port overwrite on register update Greg Kroah-Hartman
@ 2026-07-30 14:10 ` Greg Kroah-Hartman
2026-07-30 14:10 ` [PATCH 6.18 293/675] net: stmmac: reset residual action in L3L4 filters on delete Greg Kroah-Hartman
` (387 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:10 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Rohan G Thomas, Nazim Amirul,
Maxime Chevallier, Jakub Raczynski, Paolo Abeni, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Nazim Amirul <muhammad.nazim.amirul.nazle.asmade@altera.com>
[ Upstream commit 5536d7c843637e9430279b94935fcf7df98babb3 ]
The basic flow parser in tc_add_basic_flow() does not validate match
keys before proceeding. Unsupported offload configurations such as
partial protocol masks, non-IPv4 network proto, or non-TCP/UDP transport
proto are silently accepted instead of returning -EOPNOTSUPP.
Add validation to return -EOPNOTSUPP early for:
- No network or transport proto present in the key
- Partial protocol mask (only full mask supported)
- Network proto is not IPv4
- Transport proto is not TCP or UDP
Each rejection includes an extack message so the user knows which part
of the match is unsupported.
Also propagate -EOPNOTSUPP from tc_add_basic_flow() in tc_add_flow()
by returning it directly rather than using break. The break was silently
discarding the error for FLOW_CLS_REPLACE operations where entry->in_use
is already true, causing tc_add_flow() to return 0 (success) for
unsupported replace requests.
Fixes: 425eabddaf0f ("net: stmmac: Implement L3/L4 Filters using TC Flower")
Signed-off-by: Rohan G Thomas <rohan.g.thomas@altera.com>
Signed-off-by: Nazim Amirul <muhammad.nazim.amirul.nazle.asmade@altera.com>
Reviewed-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Link: https://patch.msgid.link/20260714023716.29865-4-muhammad.nazim.amirul.nazle.asmade@altera.com
Reviewed-by: Jakub Raczynski <j.raczynski@samsung.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
.../net/ethernet/stmicro/stmmac/stmmac_tc.c | 34 +++++++++++++++++++
1 file changed, 34 insertions(+)
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c
index 3b4d4696afe96a..2050f1fa9f44cb 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c
@@ -446,6 +446,7 @@ static int tc_parse_flow_actions(struct stmmac_priv *priv,
}
#define ETHER_TYPE_FULL_MASK cpu_to_be16(~0)
+#define IP_PROTO_FULL_MASK 0xFF
static int tc_add_basic_flow(struct stmmac_priv *priv,
struct flow_cls_offload *cls,
@@ -461,6 +462,37 @@ static int tc_add_basic_flow(struct stmmac_priv *priv,
flow_rule_match_basic(rule, &match);
+ /* Both network proto and transport proto not present in the key */
+ if (!match.mask || !(match.mask->n_proto || match.mask->ip_proto)) {
+ NL_SET_ERR_MSG_MOD(cls->common.extack,
+ "filter must specify network or transport protocol");
+ return -EOPNOTSUPP;
+ }
+
+ /* If the proto is present in the key and is not full mask */
+ if ((match.mask->n_proto && match.mask->n_proto != ETHER_TYPE_FULL_MASK) ||
+ (match.mask->ip_proto && match.mask->ip_proto != IP_PROTO_FULL_MASK)) {
+ NL_SET_ERR_MSG_MOD(cls->common.extack,
+ "only full protocol mask is supported");
+ return -EOPNOTSUPP;
+ }
+
+ /* Network proto is present in the key and is not IPv4 */
+ if (match.mask->n_proto && match.key->n_proto != cpu_to_be16(ETH_P_IP)) {
+ NL_SET_ERR_MSG_MOD(cls->common.extack,
+ "only IPv4 network protocol is supported");
+ return -EOPNOTSUPP;
+ }
+
+ /* Transport proto is present in the key and is not TCP or UDP */
+ if (match.mask->ip_proto &&
+ match.key->ip_proto != IPPROTO_TCP &&
+ match.key->ip_proto != IPPROTO_UDP) {
+ NL_SET_ERR_MSG_MOD(cls->common.extack,
+ "only TCP and UDP transport protocols are supported");
+ return -EOPNOTSUPP;
+ }
+
entry->ip_proto = match.key->ip_proto;
return 0;
}
@@ -598,6 +630,8 @@ static int tc_add_flow(struct stmmac_priv *priv,
ret = tc_flow_parsers[i].fn(priv, cls, entry);
if (!ret)
entry->in_use = true;
+ else if (ret == -EOPNOTSUPP)
+ return ret;
}
if (!entry->in_use)
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 293/675] net: stmmac: reset residual action in L3L4 filters on delete
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (291 preceding siblings ...)
2026-07-30 14:10 ` [PATCH 6.18 292/675] net: stmmac: fix l3l4 filter rejecting unsupported offload requests Greg Kroah-Hartman
@ 2026-07-30 14:10 ` Greg Kroah-Hartman
2026-07-30 14:10 ` [PATCH 6.18 294/675] net: stmmac: enable the MAC on link up for all supported speeds Greg Kroah-Hartman
` (386 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:10 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Rohan G Thomas, Nazim Amirul,
Maxime Chevallier, Jakub Raczynski, Paolo Abeni, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Nazim Amirul <muhammad.nazim.amirul.nazle.asmade@altera.com>
[ Upstream commit a448f821289934b961dd9d8d0beb006cc8937ba2 ]
When deleting an L3/L4 flower filter entry, the action field is not
reset. If a filter was previously configured with a drop action, that
action may persist and affect subsequent filter configurations
unintentionally.
Clear the action field when the filter entry is deleted.
Fixes: 425eabddaf0f ("net: stmmac: Implement L3/L4 Filters using TC Flower")
Signed-off-by: Rohan G Thomas <rohan.g.thomas@altera.com>
Signed-off-by: Nazim Amirul <muhammad.nazim.amirul.nazle.asmade@altera.com>
Reviewed-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Link: https://patch.msgid.link/20260714023716.29865-5-muhammad.nazim.amirul.nazle.asmade@altera.com
Reviewed-by: Jakub Raczynski <j.raczynski@samsung.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c
index 2050f1fa9f44cb..0119b4b89fc0a0 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c
@@ -661,6 +661,7 @@ static int tc_del_flow(struct stmmac_priv *priv,
entry->in_use = false;
entry->cookie = 0;
entry->is_l4 = false;
+ entry->action = 0;
return ret;
}
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 294/675] net: stmmac: enable the MAC on link up for all supported speeds
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (292 preceding siblings ...)
2026-07-30 14:10 ` [PATCH 6.18 293/675] net: stmmac: reset residual action in L3L4 filters on delete Greg Kroah-Hartman
@ 2026-07-30 14:10 ` Greg Kroah-Hartman
2026-07-30 14:10 ` [PATCH 6.18 295/675] net: gre: fix lltx regression for GRE tunnels with SEQ/CSUM Greg Kroah-Hartman
` (385 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:10 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Maxime Chevallier, vadik likholetov,
Jacob Keller, Paolo Abeni, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: vadik likholetov <vadikas@gmail.com>
[ Upstream commit 9c99db3a2080b8c2cbbb1100369586a9bea43321 ]
stmmac_mac_link_down() clears the MAC's transmit and receive enable bits.
stmmac_mac_link_up() is expected to set them again through
stmmac_mac_set(..., true), but it first switches on the negotiated speed
and returns early for a speed the switch does not list. The MAC is then
left gated off.
The speed selection is split into three switches, keyed on the interface.
The generic branch -- taken for everything that is neither USXGMII nor
XLGMII, so including PHY_INTERFACE_MODE_10GBASER -- lists only SPEED_2500,
SPEED_1000, SPEED_100 and SPEED_10.
MGBE on Tegra234 runs 10GBASE-R into an Aquantia AQR113C. That PHY does
rate matching, so phylink_link_up() replaces the media speed with the
MAC-side interface speed before calling into the MAC:
case RATE_MATCH_PAUSE:
speed = phylink_interface_max_speed(link_state.interface);
duplex = DUPLEX_FULL;
The driver is therefore called as
stmmac_mac_link_up(interface=10GBASER, speed=10000, duplex=1)
which falls through to "default: return;". The interface stops passing
traffic after the first link flap.
The failure is easy to misread. The link still comes up, because the PHY
is polled over MDIO and needs no MAC, so the interface reports carrier 1
at the media speed. The DMA is untouched, so its start bits stay set and
descriptors are still consumed. Only the MAC itself is gated off: the
receiver counts nothing (mmc_rx_framecount_gb stops advancing, RE is 0)
and nothing reaches the wire (TE is 0). The interface survives boot only
because stmmac_hw_setup(), called from ndo_open, enables the MAC
unconditionally -- so the problem appears only once the cable has been
unplugged and plugged back in, and "ip link set dev <ethX> down && ip
link set dev <ethX> up" appears to fix it.
The interface is not what the speed bits depend on: with the single
exception of 2.5G, which is selected through the XGMII block on USXGMII
and through the regular speed bits otherwise, each speed maps to one
field of struct mac_link. The per-interface switches are speed
validation, and phylink already validates the speed against
priv->hw->link.caps. So collapse the three switches into one keyed on the
speed alone, keeping the interface test only for the 2.5G case. This
covers 10G on 10GBASE-R, and equally 5G, and 1G/100/10 on USXGMII, all of
which hit "default: return;" today.
A core that does not support a speed leaves the corresponding mac_link
field at 0, and phylink will not offer it that speed in the first place.
For dwxgmac2 at 10G, link.xgmii.speed10000 is XGMAC_CONFIG_SS_10000,
which is 0 and is the correct speed selection for a 10GBASE-R MAC: ctrl
then equals old_ctrl, the register write is skipped, and execution
reaches stmmac_mac_set(..., true).
Log an error in the default case, since a speed with no entry here leaves
the MAC disabled and the symptom does not point at the cause.
Fixes: d8ca113724e7 ("net: stmmac: tegra: Add MGBE support")
Suggested-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Signed-off-by: vadik likholetov <vadikas@gmail.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Reviewed-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Link: https://patch.msgid.link/20260713074911.30090-1-vadikas@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
.../net/ethernet/stmicro/stmmac/stmmac_main.c | 92 ++++++++-----------
1 file changed, 37 insertions(+), 55 deletions(-)
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index 1ceedd74e42908..3be0b795324964 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -892,63 +892,45 @@ static void stmmac_mac_link_up(struct phylink_config *config,
old_ctrl = readl(priv->ioaddr + MAC_CTRL_REG);
ctrl = old_ctrl & ~priv->hw->link.speed_mask;
- if (interface == PHY_INTERFACE_MODE_USXGMII) {
- switch (speed) {
- case SPEED_10000:
- ctrl |= priv->hw->link.xgmii.speed10000;
- break;
- case SPEED_5000:
- ctrl |= priv->hw->link.xgmii.speed5000;
- break;
- case SPEED_2500:
+ switch (speed) {
+ case SPEED_100000:
+ ctrl |= priv->hw->link.xlgmii.speed100000;
+ break;
+ case SPEED_50000:
+ ctrl |= priv->hw->link.xlgmii.speed50000;
+ break;
+ case SPEED_40000:
+ ctrl |= priv->hw->link.xlgmii.speed40000;
+ break;
+ case SPEED_25000:
+ ctrl |= priv->hw->link.xlgmii.speed25000;
+ break;
+ case SPEED_10000:
+ ctrl |= priv->hw->link.xgmii.speed10000;
+ break;
+ case SPEED_5000:
+ ctrl |= priv->hw->link.xgmii.speed5000;
+ break;
+ case SPEED_2500:
+ if (interface == PHY_INTERFACE_MODE_USXGMII)
ctrl |= priv->hw->link.xgmii.speed2500;
- break;
- default:
- return;
- }
- } else if (interface == PHY_INTERFACE_MODE_XLGMII) {
- switch (speed) {
- case SPEED_100000:
- ctrl |= priv->hw->link.xlgmii.speed100000;
- break;
- case SPEED_50000:
- ctrl |= priv->hw->link.xlgmii.speed50000;
- break;
- case SPEED_40000:
- ctrl |= priv->hw->link.xlgmii.speed40000;
- break;
- case SPEED_25000:
- ctrl |= priv->hw->link.xlgmii.speed25000;
- break;
- case SPEED_10000:
- ctrl |= priv->hw->link.xgmii.speed10000;
- break;
- case SPEED_2500:
- ctrl |= priv->hw->link.speed2500;
- break;
- case SPEED_1000:
- ctrl |= priv->hw->link.speed1000;
- break;
- default:
- return;
- }
- } else {
- switch (speed) {
- case SPEED_2500:
+ else
ctrl |= priv->hw->link.speed2500;
- break;
- case SPEED_1000:
- ctrl |= priv->hw->link.speed1000;
- break;
- case SPEED_100:
- ctrl |= priv->hw->link.speed100;
- break;
- case SPEED_10:
- ctrl |= priv->hw->link.speed10;
- break;
- default:
- return;
- }
+ break;
+ case SPEED_1000:
+ ctrl |= priv->hw->link.speed1000;
+ break;
+ case SPEED_100:
+ ctrl |= priv->hw->link.speed100;
+ break;
+ case SPEED_10:
+ ctrl |= priv->hw->link.speed10;
+ break;
+ default:
+ netdev_err(priv->dev,
+ "unsupported speed %s on %s, leaving the MAC disabled\n",
+ phy_speed_to_str(speed), phy_modes(interface));
+ return;
}
if (priv->plat->fix_mac_speed)
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 295/675] net: gre: fix lltx regression for GRE tunnels with SEQ/CSUM
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (293 preceding siblings ...)
2026-07-30 14:10 ` [PATCH 6.18 294/675] net: stmmac: enable the MAC on link up for all supported speeds Greg Kroah-Hartman
@ 2026-07-30 14:10 ` Greg Kroah-Hartman
2026-07-30 14:10 ` [PATCH 6.18 296/675] octeontx2-vf: set TC flower flag on MCAM entry allocation Greg Kroah-Hartman
` (384 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:10 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Yun Zhou, Ido Schimmel, Paolo Abeni,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Yun Zhou <yun.zhou@windriver.com>
[ Upstream commit 675ed582c1aa4d919dd535490de08c015005c653 ]
Before commit 00d066a4d4ed ("netdev_features: convert NETIF_F_LLTX to
dev->lltx"), NETIF_F_LLTX was set unconditionally in both
__gre_tunnel_init() and ip6gre_tnl_init_features() alongside
GRE_FEATURES:
dev->features |= GRE_FEATURES | NETIF_F_LLTX;
When that commit converted NETIF_F_LLTX to the dev->lltx flag, it
placed 'dev->lltx = true' after the SEQ/CSUM early returns instead
of before them. This causes GRE/GRETAP/ip6gre tunnels with SEQ or
CSUM+encap to lose lockless TX, reintroducing _xmit_lock acquisition
around their ndo_start_xmit. Since GRE xmit re-enters the stack via
ip_tunnel_xmit(), holding _xmit_lock risks ABBA deadlock with the
underlay device.
CPU0 CPU1
---- ----
lock(&qdisc_xmit_lock_key#6);
lock(&qdisc_xmit_lock_key#3);
lock(&qdisc_xmit_lock_key#6);
lock(&qdisc_xmit_lock_key#3);
Fix by moving dev->lltx = true before the early returns in both
functions, restoring the original unconditional behavior.
Fixes: 00d066a4d4ed ("netdev_features: convert NETIF_F_LLTX to dev->lltx")
Signed-off-by: Yun Zhou <yun.zhou@windriver.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Link: https://patch.msgid.link/20260713150945.1779628-1-yun.zhou@windriver.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/ipv4/ip_gre.c | 4 ++--
net/ipv6/ip6_gre.c | 4 ++--
2 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c
index 879d37c557fafb..300b802125db27 100644
--- a/net/ipv4/ip_gre.c
+++ b/net/ipv4/ip_gre.c
@@ -1017,6 +1017,8 @@ static void __gre_tunnel_init(struct net_device *dev)
dev->features |= GRE_FEATURES;
dev->hw_features |= GRE_FEATURES;
+ dev->lltx = true;
+
/* TCP offload with GRE SEQ is not supported, nor can we support 2
* levels of outer headers requiring an update.
*/
@@ -1028,8 +1030,6 @@ static void __gre_tunnel_init(struct net_device *dev)
dev->features |= NETIF_F_GSO_SOFTWARE;
dev->hw_features |= NETIF_F_GSO_SOFTWARE;
-
- dev->lltx = true;
}
static int ipgre_tunnel_init(struct net_device *dev)
diff --git a/net/ipv6/ip6_gre.c b/net/ipv6/ip6_gre.c
index 75961c4ebcdd22..58b473c157c820 100644
--- a/net/ipv6/ip6_gre.c
+++ b/net/ipv6/ip6_gre.c
@@ -1454,6 +1454,8 @@ static void ip6gre_tnl_init_features(struct net_device *dev)
dev->features |= GRE6_FEATURES;
dev->hw_features |= GRE6_FEATURES;
+ dev->lltx = true;
+
/* TCP offload with GRE SEQ is not supported, nor can we support 2
* levels of outer headers requiring an update.
*/
@@ -1465,8 +1467,6 @@ static void ip6gre_tnl_init_features(struct net_device *dev)
dev->features |= NETIF_F_GSO_SOFTWARE;
dev->hw_features |= NETIF_F_GSO_SOFTWARE;
-
- dev->lltx = true;
}
static int ip6gre_tunnel_init_common(struct net_device *dev)
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 296/675] octeontx2-vf: set TC flower flag on MCAM entry allocation
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (294 preceding siblings ...)
2026-07-30 14:10 ` [PATCH 6.18 295/675] net: gre: fix lltx regression for GRE tunnels with SEQ/CSUM Greg Kroah-Hartman
@ 2026-07-30 14:10 ` Greg Kroah-Hartman
2026-07-30 14:10 ` [PATCH 6.18 297/675] ipv4: icmp: fill flow parameters in icmp_route_lookup decoy lookup Greg Kroah-Hartman
` (383 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:10 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Suman Ghosh, Ratheesh Kannoth,
Simon Horman, Paolo Abeni, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Suman Ghosh <sumang@marvell.com>
[ Upstream commit 0d4d31e3cc5dd6204fa1495c4107f5075acce5ed ]
When MCAM entries are allocated for a VF netdev via the devlink
mcam_count parameter, only OTX2_FLAG_NTUPLE_SUPPORT was set. That
enabled ethtool ntuple filters but not tc flower offload. Also set
OTX2_FLAG_TC_FLOWER_SUPPORT when entries are successfully allocated.
Fixes: 2da489432747 ("octeontx2-pf: devlink params support to set mcam entry count")
Signed-off-by: Suman Ghosh <sumang@marvell.com>
Signed-off-by: Ratheesh Kannoth <rkannoth@marvell.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20260715052007.2099851-1-rkannoth@marvell.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/marvell/octeontx2/nic/otx2_flows.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_flows.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_flows.c
index 64c6d9162ef644..17e8f6e51808b5 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_flows.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_flows.c
@@ -146,6 +146,7 @@ int otx2_alloc_mcam_entries(struct otx2_nic *pfvf, u16 count)
if (allocated) {
pfvf->flags |= OTX2_FLAG_MCAM_ENTRIES_ALLOC;
pfvf->flags |= OTX2_FLAG_NTUPLE_SUPPORT;
+ pfvf->flags |= OTX2_FLAG_TC_FLOWER_SUPPORT;
}
if (allocated != count)
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 297/675] ipv4: icmp: fill flow parameters in icmp_route_lookup decoy lookup
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (295 preceding siblings ...)
2026-07-30 14:10 ` [PATCH 6.18 296/675] octeontx2-vf: set TC flower flag on MCAM entry allocation Greg Kroah-Hartman
@ 2026-07-30 14:10 ` Greg Kroah-Hartman
2026-07-30 14:10 ` [PATCH 6.18 298/675] ppp: annotate data races in ppp_generic Greg Kroah-Hartman
` (382 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:10 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Muhammad Ziad, Eric Dumazet,
David Ahern, Jakub Kicinski, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Eric Dumazet <edumazet@google.com>
[ Upstream commit 853e164c2b321f0711361bc23505aaeb7dc432c3 ]
When Linux forwards a packet and needs to generate an ICMP error,
icmp_route_lookup() performs a reverse-path relookup. For non-local
destinations, it performs a decoy lookup to find the expected egress
interface (rt2->dst.dev) before validating the path with ip_route_input().
Currently, the decoy flow structure (fl4_2) only sets .daddr = fl4_dec.saddr,
leaving .saddr, .flowi4_dscp, .flowi4_proto, .flowi4_mark, .flowi4_oif,
.fl4_sport, .fl4_dport, and .flowi4_uid zeroed out.
When policy routing rules (such as ip rule add from $SRC lookup 100, or
dscp/fwmark/ipproto/port rules, or VRF bindings) are configured:
1. The decoy lookup fails to match the policy rule because saddr and other
key flow selectors are missing in fl4_2.
2. It resolves a route using the default table instead, returning an incorrect
egress netdev.
3. Passing the wrong netdev to ip_route_input() causes strict reverse-path
filtering (rp_filter=1) to fail, logging false-positive "martian source"
warnings and causing the relookup to fail.
Fix this by initializing fl4_2 from fl4_dec and:
- Swapping source/destination IP addresses.
- Swapping L4 ports for transport protocols with ports (TCP, UDP, SCTP, DCCP)
so port-based policy routing matches correctly. Non-port protocols (such as
ICMP or GRE) leave the flowi_uli union fields intact to prevent corruption.
- Setting .flowi4_oif = l3mdev_master_ifindex(route_lookup_dev) to ensure
VRF routing tables are respected.
- Setting .flowi4_flags |= FLOWI_FLAG_ANYSRC to allow output route lookups
for non-local source IP addresses.
- Using __ip_route_output_key() instead of ip_route_output_key() for fl4_2
so that raw FIB routing is used without triggering spurious XFRM policy
lookups on the decoy flow (the actual XFRM lookup is performed later using
fl4_dec).
Fixes: 415b3334a21a ("icmp: Fix regression in nexthop resolution during replies.")
Reported-by: Muhammad Ziad <muhzi100@gmail.com>
Closes: https://lore.kernel.org/netdev/CAOAwikA60AYKdFr_UDLyja3oU4hqyAE7uFZWqum5uRdaQsgRYg@mail.gmail.com/
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Link: https://patch.msgid.link/20260722104236.2938082-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/ipv4/icmp.c | 18 +++++++++++++++---
1 file changed, 15 insertions(+), 3 deletions(-)
diff --git a/net/ipv4/icmp.c b/net/ipv4/icmp.c
index fc0a93f43313d1..691d7b076c620c 100644
--- a/net/ipv4/icmp.c
+++ b/net/ipv4/icmp.c
@@ -539,11 +539,23 @@ static struct rtable *icmp_route_lookup(struct net *net, struct flowi4 *fl4,
if (IS_ERR(rt2))
err = PTR_ERR(rt2);
} else {
- struct flowi4 fl4_2 = {};
+ struct flowi4 fl4_2 = fl4_dec;
unsigned long orefdst;
- fl4_2.daddr = fl4_dec.saddr;
- rt2 = ip_route_output_key(net, &fl4_2);
+ swap(fl4_2.daddr, fl4_2.saddr);
+ switch (fl4_2.flowi4_proto) {
+ case IPPROTO_TCP:
+ case IPPROTO_UDP:
+ case IPPROTO_SCTP:
+ case IPPROTO_DCCP:
+ swap(fl4_2.fl4_sport, fl4_2.fl4_dport);
+ break;
+ }
+
+ fl4_2.flowi4_oif = l3mdev_master_ifindex(route_lookup_dev);
+ fl4_2.flowi4_flags |= FLOWI_FLAG_ANYSRC;
+
+ rt2 = __ip_route_output_key(net, &fl4_2);
if (IS_ERR(rt2)) {
err = PTR_ERR(rt2);
goto relookup_failed;
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 298/675] ppp: annotate data races in ppp_generic
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (296 preceding siblings ...)
2026-07-30 14:10 ` [PATCH 6.18 297/675] ipv4: icmp: fill flow parameters in icmp_route_lookup decoy lookup Greg Kroah-Hartman
@ 2026-07-30 14:10 ` Greg Kroah-Hartman
2026-07-30 14:10 ` [PATCH 6.18 299/675] hinic: remove unused ethtool RSS user configuration buffers Greg Kroah-Hartman
` (381 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:10 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Eric Dumazet, Qingfang Deng,
Jakub Kicinski, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Eric Dumazet <edumazet@google.com>
[ Upstream commit 543adf072165aaf2e3b635c0476204f9658ed3bf ]
Several fields in struct ppp can be read or updated concurrently
from multiple CPUs without synchronization, causing data races:
1. ppp->mru is read concurrently in ppp_receive_nonmp_frame() while
being updated via PPPIOCSMRU ioctl. Protect ppp->mru updates in
PPPIOCSMRU with ppp_recv_lock(ppp).
2. PPPIOCGFLAGS reads ppp->flags, ppp->xstate, and ppp->rstate
unlocked. Wrap the read in ppp_lock(ppp) to get a consistent
snapshot.
3. ppp->debug is updated via PPPIOCSDEBUG and read concurrently on
fast paths. Annotate reads with READ_ONCE() and writes with
WRITE_ONCE().
4. ppp->last_xmit and ppp->last_recv are updated on TX/RX data paths
and read via PPPIOCGIDLE32 / PPPIOCGIDLE64 ioctls. Annotate with
WRITE_ONCE() / READ_ONCE() and use max() to handle jiffies
subtraction.
5. ppp->npmode[] is updated via PPPIOCSNPMODE and read on TX/RX
paths. Annotate with WRITE_ONCE() / READ_ONCE().
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Qingfang Deng <qingfang.deng@linux.dev>
Link: https://patch.msgid.link/20260722101605.2868548-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ppp/ppp_generic.c | 50 ++++++++++++++++++++---------------
1 file changed, 28 insertions(+), 22 deletions(-)
diff --git a/drivers/net/ppp/ppp_generic.c b/drivers/net/ppp/ppp_generic.c
index a2fe0fe2f3389f..14fa87a8e08345 100644
--- a/drivers/net/ppp/ppp_generic.c
+++ b/drivers/net/ppp/ppp_generic.c
@@ -818,7 +818,9 @@ static long ppp_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
case PPPIOCSMRU:
if (get_user(val, p))
break;
+ ppp_recv_lock(ppp);
ppp->mru = val;
+ ppp_recv_unlock(ppp);
err = 0;
break;
@@ -839,7 +841,9 @@ static long ppp_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
break;
case PPPIOCGFLAGS:
+ ppp_lock(ppp);
val = ppp->flags | ppp->xstate | ppp->rstate;
+ ppp_unlock(ppp);
if (put_user(val, p))
break;
err = 0;
@@ -863,7 +867,7 @@ static long ppp_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
case PPPIOCSDEBUG:
if (get_user(val, p))
break;
- ppp->debug = val;
+ WRITE_ONCE(ppp->debug, val);
err = 0;
break;
@@ -874,16 +878,16 @@ static long ppp_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
break;
case PPPIOCGIDLE32:
- idle32.xmit_idle = (jiffies - ppp->last_xmit) / HZ;
- idle32.recv_idle = (jiffies - ppp->last_recv) / HZ;
- if (copy_to_user(argp, &idle32, sizeof(idle32)))
+ idle32.xmit_idle = max(0L, (long)(jiffies - READ_ONCE(ppp->last_xmit))) / HZ;
+ idle32.recv_idle = max(0L, (long)(jiffies - READ_ONCE(ppp->last_recv))) / HZ;
+ if (copy_to_user(argp, &idle32, sizeof(idle32)))
break;
err = 0;
break;
case PPPIOCGIDLE64:
- idle64.xmit_idle = (jiffies - ppp->last_xmit) / HZ;
- idle64.recv_idle = (jiffies - ppp->last_recv) / HZ;
+ idle64.xmit_idle = max(0L, (long)(jiffies - READ_ONCE(ppp->last_xmit))) / HZ;
+ idle64.recv_idle = max(0L, (long)(jiffies - READ_ONCE(ppp->last_recv))) / HZ;
if (copy_to_user(argp, &idle64, sizeof(idle64)))
break;
err = 0;
@@ -924,7 +928,7 @@ static long ppp_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
if (copy_to_user(argp, &npi, sizeof(npi)))
break;
} else {
- ppp->npmode[i] = npi.mode;
+ WRITE_ONCE(ppp->npmode[i], npi.mode);
/* we may be able to transmit more packets now (??) */
netif_wake_queue(ppp->dev);
}
@@ -1462,7 +1466,7 @@ ppp_start_xmit(struct sk_buff *skb, struct net_device *dev)
goto outf;
/* Drop, accept or reject the packet */
- switch (ppp->npmode[npi]) {
+ switch (READ_ONCE(ppp->npmode[npi])) {
case NPMODE_PASS:
break;
case NPMODE_QUEUE:
@@ -1802,7 +1806,7 @@ ppp_prepare_tx_skb(struct ppp *ppp, struct sk_buff **pskb)
*(__be16 *)skb_push(skb, 2) = htons(PPP_FILTER_OUTBOUND_TAG);
if (ppp->pass_filter &&
bpf_prog_run(ppp->pass_filter, skb) == 0) {
- if (ppp->debug & 1)
+ if (READ_ONCE(ppp->debug) & 1)
netdev_printk(KERN_DEBUG, ppp->dev,
"PPP: outbound frame "
"not passed\n");
@@ -1812,11 +1816,11 @@ ppp_prepare_tx_skb(struct ppp *ppp, struct sk_buff **pskb)
/* if this packet passes the active filter, record the time */
if (!(ppp->active_filter &&
bpf_prog_run(ppp->active_filter, skb) == 0))
- ppp->last_xmit = jiffies;
+ WRITE_ONCE(ppp->last_xmit, jiffies);
skb_pull(skb, 2);
#else
/* for data packets, record the time */
- ppp->last_xmit = jiffies;
+ WRITE_ONCE(ppp->last_xmit, jiffies);
#endif /* CONFIG_PPP_FILTER */
}
@@ -2189,7 +2193,7 @@ static int ppp_mp_explode(struct ppp *ppp, struct sk_buff *skb)
noskb:
spin_unlock(&pch->downl);
err_linearize:
- if (ppp->debug & 1)
+ if (READ_ONCE(ppp->debug) & 1)
netdev_err(ppp->dev, "PPP: no memory (fragment)\n");
DEV_STATS_INC(ppp->dev, tx_errors);
++ppp->nxseq;
@@ -2548,7 +2552,7 @@ ppp_receive_nonmp_frame(struct ppp *ppp, struct sk_buff *skb)
*(__be16 *)skb_push(skb, 2) = htons(PPP_FILTER_INBOUND_TAG);
if (ppp->pass_filter &&
bpf_prog_run(ppp->pass_filter, skb) == 0) {
- if (ppp->debug & 1)
+ if (READ_ONCE(ppp->debug) & 1)
netdev_printk(KERN_DEBUG, ppp->dev,
"PPP: inbound frame "
"not passed\n");
@@ -2557,14 +2561,14 @@ ppp_receive_nonmp_frame(struct ppp *ppp, struct sk_buff *skb)
}
if (!(ppp->active_filter &&
bpf_prog_run(ppp->active_filter, skb) == 0))
- ppp->last_recv = jiffies;
+ WRITE_ONCE(ppp->last_recv, jiffies);
__skb_pull(skb, 2);
} else
#endif /* CONFIG_PPP_FILTER */
- ppp->last_recv = jiffies;
+ WRITE_ONCE(ppp->last_recv, jiffies);
if ((ppp->dev->flags & IFF_UP) == 0 ||
- ppp->npmode[npi] != NPMODE_PASS) {
+ READ_ONCE(ppp->npmode[npi]) != NPMODE_PASS) {
kfree_skb(skb);
} else {
/* chop off protocol */
@@ -2817,7 +2821,7 @@ ppp_mp_reconstruct(struct ppp *ppp)
seq = seq_before(minseq, PPP_MP_CB(p)->sequence)?
minseq + 1: PPP_MP_CB(p)->sequence;
- if (ppp->debug & 1)
+ if (READ_ONCE(ppp->debug) & 1)
netdev_printk(KERN_DEBUG, ppp->dev,
"lost frag %u..%u\n",
oldseq, seq-1);
@@ -2866,7 +2870,7 @@ ppp_mp_reconstruct(struct ppp *ppp)
struct sk_buff *tmp2;
skb_queue_reverse_walk_from_safe(list, p, tmp2) {
- if (ppp->debug & 1)
+ if (READ_ONCE(ppp->debug) & 1)
netdev_printk(KERN_DEBUG, ppp->dev,
"discarding frag %u\n",
PPP_MP_CB(p)->sequence);
@@ -2888,7 +2892,7 @@ ppp_mp_reconstruct(struct ppp *ppp)
skb_queue_walk_safe(list, p, tmp) {
if (p == head)
break;
- if (ppp->debug & 1)
+ if (READ_ONCE(ppp->debug) & 1)
netdev_printk(KERN_DEBUG, ppp->dev,
"discarding frag %u\n",
PPP_MP_CB(p)->sequence);
@@ -2896,7 +2900,7 @@ ppp_mp_reconstruct(struct ppp *ppp)
kfree_skb(p);
}
- if (ppp->debug & 1)
+ if (READ_ONCE(ppp->debug) & 1)
netdev_printk(KERN_DEBUG, ppp->dev,
" missed pkts %u..%u\n",
ppp->nextseq,
@@ -3209,7 +3213,8 @@ ppp_ccp_peek(struct ppp *ppp, struct sk_buff *skb, int inbound)
if (!ppp->rc_state)
break;
if (ppp->rcomp->decomp_init(ppp->rc_state, dp, len,
- ppp->file.index, 0, ppp->mru, ppp->debug)) {
+ ppp->file.index, 0, ppp->mru,
+ READ_ONCE(ppp->debug))) {
ppp->rstate |= SC_DECOMP_RUN;
ppp->rstate &= ~(SC_DC_ERROR | SC_DC_FERROR);
}
@@ -3218,7 +3223,8 @@ ppp_ccp_peek(struct ppp *ppp, struct sk_buff *skb, int inbound)
if (!ppp->xc_state)
break;
if (ppp->xcomp->comp_init(ppp->xc_state, dp, len,
- ppp->file.index, 0, ppp->debug))
+ ppp->file.index, 0,
+ READ_ONCE(ppp->debug)))
ppp->xstate |= SC_COMP_RUN;
}
break;
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 299/675] hinic: remove unused ethtool RSS user configuration buffers
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (297 preceding siblings ...)
2026-07-30 14:10 ` [PATCH 6.18 298/675] ppp: annotate data races in ppp_generic Greg Kroah-Hartman
@ 2026-07-30 14:10 ` Greg Kroah-Hartman
2026-07-30 14:10 ` [PATCH 6.18 300/675] net: qrtr: restrict socket creation to the initial network namespace Greg Kroah-Hartman
` (380 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:10 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Chenguang Zhao, Joe Damato,
Jakub Kicinski, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Chenguang Zhao <zhaochenguang@kylinos.cn>
[ Upstream commit fe0c002928c6749b7f4a726f6f600f6dd70280ea ]
rss_indir_user and rss_hkey_user are allocated and filled in
__set_rss_rxfh() when the user configures RSS via ethtool, but
nothing ever reads them. hinic_get_rxfh() fetches the state from
the device, and the hardware is programmed from the original
indir/key arguments. These buffers only leaked on driver unload.
Drop the unused allocations, memcpys, and struct fields.
Fixes: 4fdc51bb4e92 ("hinic: add support for rss parameters with ethtool")
Signed-off-by: Chenguang Zhao <zhaochenguang@kylinos.cn>
Reviewed-by: Joe Damato <joe@dama.to>
Link: https://patch.msgid.link/20260722025353.328179-1-chenguang.zhao@linux.dev
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/huawei/hinic/hinic_dev.h | 2 --
.../net/ethernet/huawei/hinic/hinic_ethtool.c | 21 -------------------
2 files changed, 23 deletions(-)
diff --git a/drivers/net/ethernet/huawei/hinic/hinic_dev.h b/drivers/net/ethernet/huawei/hinic/hinic_dev.h
index 52ea97c818b8ec..d9ab94910a2a79 100644
--- a/drivers/net/ethernet/huawei/hinic/hinic_dev.h
+++ b/drivers/net/ethernet/huawei/hinic/hinic_dev.h
@@ -104,8 +104,6 @@ struct hinic_dev {
u16 num_rss;
u16 rss_limit;
struct hinic_rss_type rss_type;
- u8 *rss_hkey_user;
- s32 *rss_indir_user;
struct hinic_intr_coal_info *rx_intr_coalesce;
struct hinic_intr_coal_info *tx_intr_coalesce;
struct hinic_sriov_info sriov_info;
diff --git a/drivers/net/ethernet/huawei/hinic/hinic_ethtool.c b/drivers/net/ethernet/huawei/hinic/hinic_ethtool.c
index e9f338e9dbe7ae..cd4c295ec7aeb3 100644
--- a/drivers/net/ethernet/huawei/hinic/hinic_ethtool.c
+++ b/drivers/net/ethernet/huawei/hinic/hinic_ethtool.c
@@ -1064,17 +1064,6 @@ static int __set_rss_rxfh(struct net_device *netdev,
int err;
if (indir) {
- if (!nic_dev->rss_indir_user) {
- nic_dev->rss_indir_user =
- kzalloc(sizeof(u32) * HINIC_RSS_INDIR_SIZE,
- GFP_KERNEL);
- if (!nic_dev->rss_indir_user)
- return -ENOMEM;
- }
-
- memcpy(nic_dev->rss_indir_user, indir,
- sizeof(u32) * HINIC_RSS_INDIR_SIZE);
-
err = hinic_rss_set_indir_tbl(nic_dev,
nic_dev->rss_tmpl_idx, indir);
if (err)
@@ -1082,16 +1071,6 @@ static int __set_rss_rxfh(struct net_device *netdev,
}
if (key) {
- if (!nic_dev->rss_hkey_user) {
- nic_dev->rss_hkey_user =
- kzalloc(HINIC_RSS_KEY_SIZE * 2, GFP_KERNEL);
-
- if (!nic_dev->rss_hkey_user)
- return -ENOMEM;
- }
-
- memcpy(nic_dev->rss_hkey_user, key, HINIC_RSS_KEY_SIZE);
-
err = hinic_rss_set_template_tbl(nic_dev,
nic_dev->rss_tmpl_idx, key);
if (err)
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 300/675] net: qrtr: restrict socket creation to the initial network namespace
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (298 preceding siblings ...)
2026-07-30 14:10 ` [PATCH 6.18 299/675] hinic: remove unused ethtool RSS user configuration buffers Greg Kroah-Hartman
@ 2026-07-30 14:10 ` Greg Kroah-Hartman
2026-07-30 14:10 ` [PATCH 6.18 301/675] raw: annotate lockless match fields in raw_v4_match() Greg Kroah-Hartman
` (379 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:10 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Aldo Ariel Panzardo, Jakub Kicinski,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Aldo Ariel Panzardo <qwe.aldo@gmail.com>
[ Upstream commit 3b536db8fb32da9e9c62f2bb45e2e319331f0426 ]
QRTR keeps its entire port and node state in module-global variables
that are not partitioned per network namespace: qrtr_local_nid is a
single global node id (always 1) and qrtr_ports is a single global
xarray. qrtr_port_lookup() and qrtr_local_enqueue() operate on that
global state with no network-namespace check, and qrtr_create() places
no restriction on the namespace a socket is created in.
As a result an unprivileged process that creates an AF_QIPCRTR socket
in a separate network namespace, e.g. via
unshare(CLONE_NEWUSER | CLONE_NEWNET), can send QRTR datagrams -
including control-plane messages such as QRTR_TYPE_NEW_SERVER - to QRTR
sockets owned by another namespace, and vice versa. The receiving
socket sees such a message as coming from node id 1, indistinguishable
from a legitimate local client, breaking the isolation that network
namespaces are expected to provide.
QRTR is a transport to global hardware endpoints (the modem and other
remote processors) and has no per-namespace semantics; its in-kernel
name service already creates its socket in init_net only. Confine the
socket family to the initial network namespace, as other
non-namespace-aware socket families do (see llc_ui_create() and the
ieee802154 socket code).
Fixes: bdabad3e363d ("net: Add Qualcomm IPC router")
Signed-off-by: Aldo Ariel Panzardo <qwe.aldo@gmail.com>
Link: https://patch.msgid.link/20260716154319.3297699-1-qwe.aldo@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/qrtr/af_qrtr.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/net/qrtr/af_qrtr.c b/net/qrtr/af_qrtr.c
index 305523cebe3baa..fcd24a7df3f00d 100644
--- a/net/qrtr/af_qrtr.c
+++ b/net/qrtr/af_qrtr.c
@@ -1261,6 +1261,14 @@ static int qrtr_create(struct net *net, struct socket *sock,
if (sock->type != SOCK_DGRAM)
return -EPROTOTYPE;
+ /* QRTR keeps its port and node state in module-global variables that
+ * are not partitioned per network namespace, and the in-kernel name
+ * service only operates in init_net. Confine the family to init_net so
+ * a socket in another namespace cannot reach the global control plane.
+ */
+ if (!net_eq(net, &init_net))
+ return -EAFNOSUPPORT;
+
sk = sk_alloc(net, AF_QIPCRTR, GFP_KERNEL, &qrtr_proto, kern);
if (!sk)
return -ENOMEM;
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 301/675] raw: annotate lockless match fields in raw_v4_match()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (299 preceding siblings ...)
2026-07-30 14:10 ` [PATCH 6.18 300/675] net: qrtr: restrict socket creation to the initial network namespace Greg Kroah-Hartman
@ 2026-07-30 14:10 ` Greg Kroah-Hartman
2026-07-30 14:10 ` [PATCH 6.18 302/675] net/mlx5: Refactor EEPROM query error handling to return status separately Greg Kroah-Hartman
` (378 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:10 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Runyu Xiao, Jakub Kicinski,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Runyu Xiao <runyu.xiao@seu.edu.cn>
[ Upstream commit 18f116931f52e3c3303ad4b15ff41eb89b0e4239 ]
raw_v4_match() is a lockless match helper under sk_for_each_rcu(). It
still reads inet->inet_daddr, inet->inet_rcv_saddr and
sk->sk_bound_dev_if with plain loads while bind, connect and
bind-to-device paths can update the same match fields concurrently.
Annotate only those mutable match fields in raw_v4_match(), and do so
at the point of use instead of hoisting the bound-device read before
the earlier short-circuit tests.
Also annotate the raw bind writer and the shared IPv4 datagram connect
writer used by raw sockets, so the address fields updated on bind and
connect match explicit WRITE_ONCE() updates.
This version intentionally leaves the shared disconnect-side IPv4
writers to follow-up cleanup and limits the writer changes here to the
raw bind path and the datagram connect path directly exercised by raw
sockets.
Fixes: 0daf07e52709 ("raw: convert raw sockets to RCU")
Signed-off-by: Runyu Xiao <runyu.xiao@seu.edu.cn>
Link: https://patch.msgid.link/20260716142958.3064224-1-runyu.xiao@seu.edu.cn
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/ipv4/datagram.c | 4 ++--
net/ipv4/raw.c | 23 ++++++++++++++++-------
2 files changed, 18 insertions(+), 9 deletions(-)
diff --git a/net/ipv4/datagram.c b/net/ipv4/datagram.c
index c2b2cda1a7e506..7861615b34fc68 100644
--- a/net/ipv4/datagram.c
+++ b/net/ipv4/datagram.c
@@ -63,12 +63,12 @@ int __ip4_datagram_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len
}
/* Update addresses before rehashing */
- inet->inet_daddr = fl4->daddr;
+ WRITE_ONCE(inet->inet_daddr, fl4->daddr);
inet->inet_dport = usin->sin_port;
if (!inet->inet_saddr)
inet->inet_saddr = fl4->saddr;
if (!inet->inet_rcv_saddr) {
- inet->inet_rcv_saddr = fl4->saddr;
+ WRITE_ONCE(inet->inet_rcv_saddr, fl4->saddr);
if (sk->sk_prot->rehash)
sk->sk_prot->rehash(sk);
}
diff --git a/net/ipv4/raw.c b/net/ipv4/raw.c
index 26468a2ec63db1..c10cf41a365dc2 100644
--- a/net/ipv4/raw.c
+++ b/net/ipv4/raw.c
@@ -120,13 +120,21 @@ bool raw_v4_match(struct net *net, const struct sock *sk, unsigned short num,
__be32 raddr, __be32 laddr, int dif, int sdif)
{
const struct inet_sock *inet = inet_sk(sk);
+ __be32 daddr, rcv_saddr;
- if (net_eq(sock_net(sk), net) && inet->inet_num == num &&
- !(inet->inet_daddr && inet->inet_daddr != raddr) &&
- !(inet->inet_rcv_saddr && inet->inet_rcv_saddr != laddr) &&
- raw_sk_bound_dev_eq(net, sk->sk_bound_dev_if, dif, sdif))
- return true;
- return false;
+ if (!net_eq(sock_net(sk), net) || inet->inet_num != num)
+ return false;
+
+ daddr = READ_ONCE(inet->inet_daddr);
+ if (daddr && daddr != raddr)
+ return false;
+
+ rcv_saddr = READ_ONCE(inet->inet_rcv_saddr);
+ if (rcv_saddr && rcv_saddr != laddr)
+ return false;
+
+ return raw_sk_bound_dev_eq(net, READ_ONCE(sk->sk_bound_dev_if),
+ dif, sdif);
}
EXPORT_SYMBOL_GPL(raw_v4_match);
@@ -721,7 +729,8 @@ static int raw_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len)
chk_addr_ret))
goto out;
- inet->inet_rcv_saddr = inet->inet_saddr = addr->sin_addr.s_addr;
+ inet->inet_saddr = addr->sin_addr.s_addr;
+ WRITE_ONCE(inet->inet_rcv_saddr, addr->sin_addr.s_addr);
if (chk_addr_ret == RTN_MULTICAST || chk_addr_ret == RTN_BROADCAST)
inet->inet_saddr = 0; /* Use device */
sk_dst_reset(sk);
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 302/675] net/mlx5: Refactor EEPROM query error handling to return status separately
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (300 preceding siblings ...)
2026-07-30 14:10 ` [PATCH 6.18 301/675] raw: annotate lockless match fields in raw_v4_match() Greg Kroah-Hartman
@ 2026-07-30 14:10 ` Greg Kroah-Hartman
2026-07-30 14:10 ` [PATCH 6.18 303/675] net/mlx5: Fix MCIA register buffer overflow on 32 dword reads Greg Kroah-Hartman
` (377 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:10 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Matthew W Carlis, Gal Pressman,
Jianbo Liu, Tariq Toukan, Jakub Kicinski, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Gal Pressman <gal@nvidia.com>
[ Upstream commit 2e4c44b12f4da60d3e8dcbc1ccf38bb28a878050 ]
Matthew and Jakub reported [1] issues where inventory automation tools
are calling EEPROM query repeatedly on a port that doesn't have an SFP
connected, resulting in millions of error prints.
Move MCIA register status extraction from the query functions to the
callers, allowing use of extack reporting instead of a dmesg print when
using the netlink API.
[1] https://lore.kernel.org/netdev/20251028194011.39877-1-mattc@purestorage.com/
Cc: Matthew W Carlis <mattc@purestorage.com>
Signed-off-by: Gal Pressman <gal@nvidia.com>
Reviewed-by: Jianbo Liu <jianbol@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/1763415729-1238421-2-git-send-email-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Stable-dep-of: 11c057d23465 ("net/mlx5: Fix MCIA register buffer overflow on 32 dword reads")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
.../ethernet/mellanox/mlx5/core/en_ethtool.c | 19 +++++-----
.../ethernet/mellanox/mlx5/core/mlx5_core.h | 4 +--
.../net/ethernet/mellanox/mlx5/core/port.c | 35 +++++++++----------
3 files changed, 30 insertions(+), 28 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c b/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
index 893e1380a7c973..8a07b9e8dc3861 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
@@ -2027,7 +2027,7 @@ static int mlx5e_get_module_info(struct net_device *netdev,
int size_read = 0;
u8 data[4] = {0};
- size_read = mlx5_query_module_eeprom(dev, 0, 2, data);
+ size_read = mlx5_query_module_eeprom(dev, 0, 2, data, NULL);
if (size_read < 2)
return -EIO;
@@ -2069,6 +2069,7 @@ static int mlx5e_get_module_eeprom(struct net_device *netdev,
struct mlx5_core_dev *mdev = priv->mdev;
int offset = ee->offset;
int size_read;
+ u8 status = 0;
int i = 0;
if (!ee->len)
@@ -2078,15 +2079,15 @@ static int mlx5e_get_module_eeprom(struct net_device *netdev,
while (i < ee->len) {
size_read = mlx5_query_module_eeprom(mdev, offset, ee->len - i,
- data + i);
-
+ data + i, &status);
if (!size_read)
/* Done reading */
return 0;
if (size_read < 0) {
- netdev_err(priv->netdev, "%s: mlx5_query_eeprom failed:0x%x\n",
- __func__, size_read);
+ netdev_err(netdev,
+ "%s: mlx5_query_eeprom failed:0x%x, status %u\n",
+ __func__, size_read, status);
return size_read;
}
@@ -2106,6 +2107,7 @@ static int mlx5e_get_module_eeprom_by_page(struct net_device *netdev,
struct mlx5_core_dev *mdev = priv->mdev;
u8 *data = page_data->data;
int size_read;
+ u8 status = 0;
int i = 0;
if (!page_data->length)
@@ -2119,7 +2121,8 @@ static int mlx5e_get_module_eeprom_by_page(struct net_device *netdev,
query.page = page_data->page;
while (i < page_data->length) {
query.size = page_data->length - i;
- size_read = mlx5_query_module_eeprom_by_page(mdev, &query, data + i);
+ size_read = mlx5_query_module_eeprom_by_page(mdev, &query,
+ data + i, &status);
/* Done reading, return how many bytes was read */
if (!size_read)
@@ -2128,8 +2131,8 @@ static int mlx5e_get_module_eeprom_by_page(struct net_device *netdev,
if (size_read < 0) {
NL_SET_ERR_MSG_FMT_MOD(
extack,
- "Query module eeprom by page failed, read %u bytes, err %d",
- i, size_read);
+ "Query module eeprom by page failed, read %u bytes, err %d, status %u",
+ i, size_read, status);
return size_read;
}
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h b/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h
index 09c544bdf70da9..e08903d002a10b 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h
@@ -358,11 +358,11 @@ int mlx5_set_port_fcs(struct mlx5_core_dev *mdev, u8 enable);
void mlx5_query_port_fcs(struct mlx5_core_dev *mdev, bool *supported,
bool *enabled);
int mlx5_query_module_eeprom(struct mlx5_core_dev *dev,
- u16 offset, u16 size, u8 *data);
+ u16 offset, u16 size, u8 *data, u8 *status);
int
mlx5_query_module_eeprom_by_page(struct mlx5_core_dev *dev,
struct mlx5_module_eeprom_query_params *params,
- u8 *data);
+ u8 *data, u8 *status);
int mlx5_query_port_dcbx_param(struct mlx5_core_dev *mdev, u32 *out);
int mlx5_set_port_dcbx_param(struct mlx5_core_dev *mdev, u32 *in);
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/port.c b/drivers/net/ethernet/mellanox/mlx5/core/port.c
index 876e648c91ba8b..5fa06f69943dff 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/port.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/port.c
@@ -289,11 +289,11 @@ int mlx5_query_module_num(struct mlx5_core_dev *dev, int *module_num)
}
static int mlx5_query_module_id(struct mlx5_core_dev *dev, int module_num,
- u8 *module_id)
+ u8 *module_id, u8 *status)
{
u32 in[MLX5_ST_SZ_DW(mcia_reg)] = {};
u32 out[MLX5_ST_SZ_DW(mcia_reg)];
- int err, status;
+ int err;
u8 *ptr;
MLX5_SET(mcia_reg, in, i2c_device_address, MLX5_I2C_ADDR_LOW);
@@ -308,12 +308,12 @@ static int mlx5_query_module_id(struct mlx5_core_dev *dev, int module_num,
if (err)
return err;
- status = MLX5_GET(mcia_reg, out, status);
- if (status) {
- mlx5_core_err(dev, "query_mcia_reg failed: status: 0x%x\n",
- status);
+ if (MLX5_GET(mcia_reg, out, status)) {
+ if (status)
+ *status = MLX5_GET(mcia_reg, out, status);
return -EIO;
}
+
ptr = MLX5_ADDR_OF(mcia_reg, out, dword_0);
*module_id = ptr[0];
@@ -370,13 +370,14 @@ static int mlx5_mcia_max_bytes(struct mlx5_core_dev *dev)
}
static int mlx5_query_mcia(struct mlx5_core_dev *dev,
- struct mlx5_module_eeprom_query_params *params, u8 *data)
+ struct mlx5_module_eeprom_query_params *params,
+ u8 *data, u8 *status)
{
u32 in[MLX5_ST_SZ_DW(mcia_reg)] = {};
u32 out[MLX5_ST_SZ_DW(mcia_reg)];
- int status, err;
void *ptr;
u16 size;
+ int err;
size = min_t(int, params->size, mlx5_mcia_max_bytes(dev));
@@ -392,12 +393,9 @@ static int mlx5_query_mcia(struct mlx5_core_dev *dev,
if (err)
return err;
- status = MLX5_GET(mcia_reg, out, status);
- if (status) {
- mlx5_core_err(dev, "query_mcia_reg failed: status: 0x%x\n",
- status);
+ *status = MLX5_GET(mcia_reg, out, status);
+ if (*status)
return -EIO;
- }
ptr = MLX5_ADDR_OF(mcia_reg, out, dword_0);
memcpy(data, ptr, size);
@@ -406,7 +404,7 @@ static int mlx5_query_mcia(struct mlx5_core_dev *dev,
}
int mlx5_query_module_eeprom(struct mlx5_core_dev *dev,
- u16 offset, u16 size, u8 *data)
+ u16 offset, u16 size, u8 *data, u8 *status)
{
struct mlx5_module_eeprom_query_params query = {0};
u8 module_id;
@@ -416,7 +414,8 @@ int mlx5_query_module_eeprom(struct mlx5_core_dev *dev,
if (err)
return err;
- err = mlx5_query_module_id(dev, query.module_number, &module_id);
+ err = mlx5_query_module_id(dev, query.module_number, &module_id,
+ status);
if (err)
return err;
@@ -442,12 +441,12 @@ int mlx5_query_module_eeprom(struct mlx5_core_dev *dev,
query.size = size;
query.offset = offset;
- return mlx5_query_mcia(dev, &query, data);
+ return mlx5_query_mcia(dev, &query, data, status);
}
int mlx5_query_module_eeprom_by_page(struct mlx5_core_dev *dev,
struct mlx5_module_eeprom_query_params *params,
- u8 *data)
+ u8 *data, u8 *status)
{
int err;
@@ -461,7 +460,7 @@ int mlx5_query_module_eeprom_by_page(struct mlx5_core_dev *dev,
return -EINVAL;
}
- return mlx5_query_mcia(dev, params, data);
+ return mlx5_query_mcia(dev, params, data, status);
}
static int mlx5_query_port_pvlc(struct mlx5_core_dev *dev, u32 *pvlc,
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 303/675] net/mlx5: Fix MCIA register buffer overflow on 32 dword reads
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (301 preceding siblings ...)
2026-07-30 14:10 ` [PATCH 6.18 302/675] net/mlx5: Refactor EEPROM query error handling to return status separately Greg Kroah-Hartman
@ 2026-07-30 14:10 ` Greg Kroah-Hartman
2026-07-30 14:10 ` [PATCH 6.18 304/675] net/mlx5: E-Switch, fix zero num_dest in prio_tag egress vlan rule Greg Kroah-Hartman
` (376 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:10 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Gal Pressman, Alex Lazar,
Tariq Toukan, Jakub Kicinski, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Gal Pressman <gal@nvidia.com>
[ Upstream commit 11c057d23465c7a5817a7284c896d19d54c0b616 ]
The MCIA register can return up to 32 dwords (128 bytes) when the device
advertises the mcia_32dwords capability, but struct
mlx5_ifc_mcia_reg_bits only defines dword_0..11, leaving room for just
12 dwords (48 bytes) of data.
mlx5_query_mcia() clamps the read size to mlx5_mcia_max_bytes() and then
memcpy()s that many bytes out of the register, potentially reading past
the end of the 'out' buffer. On kernels built with FORTIFY_SOURCE this
is caught as a buffer overflow while reading the module EEPROM via
ethtool:
detected buffer overflow in memcpy
kernel BUG at lib/string_helpers.c:1048!
RIP: 0010:fortify_panic+0x13/0x20
Call Trace:
mlx5_query_mcia.isra.0+0x200/0x210 [mlx5_core]
mlx5_query_module_eeprom_by_page+0x4a/0xa0 [mlx5_core]
mlx5e_get_module_eeprom_by_page+0xbb/0x120 [mlx5_core]
eeprom_prepare_data+0xf3/0x170
ethnl_default_doit+0xf1/0x3b0
Extend the mcia_reg layout to 32 dwords.
Fixes: 271907ee2f29 ("net/mlx5: Query the maximum MCIA register read size from firmware")
Signed-off-by: Gal Pressman <gal@nvidia.com>
Reviewed-by: Alex Lazar <alazar@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/20260717072338.1240582-1-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/mellanox/mlx5/core/port.c | 4 ++--
include/linux/mlx5/mlx5_ifc.h | 13 +------------
2 files changed, 3 insertions(+), 14 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/port.c b/drivers/net/ethernet/mellanox/mlx5/core/port.c
index 5fa06f69943dff..d25713ce65b6d8 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/port.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/port.c
@@ -314,7 +314,7 @@ static int mlx5_query_module_id(struct mlx5_core_dev *dev, int module_num,
return -EIO;
}
- ptr = MLX5_ADDR_OF(mcia_reg, out, dword_0);
+ ptr = MLX5_ADDR_OF(mcia_reg, out, dwords);
*module_id = ptr[0];
@@ -397,7 +397,7 @@ static int mlx5_query_mcia(struct mlx5_core_dev *dev,
if (*status)
return -EIO;
- ptr = MLX5_ADDR_OF(mcia_reg, out, dword_0);
+ ptr = MLX5_ADDR_OF(mcia_reg, out, dwords);
memcpy(data, ptr, size);
return size;
diff --git a/include/linux/mlx5/mlx5_ifc.h b/include/linux/mlx5/mlx5_ifc.h
index 1b0b36aa2a767a..61257b866fb24e 100644
--- a/include/linux/mlx5/mlx5_ifc.h
+++ b/include/linux/mlx5/mlx5_ifc.h
@@ -12141,18 +12141,7 @@ struct mlx5_ifc_mcia_reg_bits {
u8 reserved_at_60[0x20];
- u8 dword_0[0x20];
- u8 dword_1[0x20];
- u8 dword_2[0x20];
- u8 dword_3[0x20];
- u8 dword_4[0x20];
- u8 dword_5[0x20];
- u8 dword_6[0x20];
- u8 dword_7[0x20];
- u8 dword_8[0x20];
- u8 dword_9[0x20];
- u8 dword_10[0x20];
- u8 dword_11[0x20];
+ u8 dwords[0x400];
};
struct mlx5_ifc_dcbx_param_bits {
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 304/675] net/mlx5: E-Switch, fix zero num_dest in prio_tag egress vlan rule
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (302 preceding siblings ...)
2026-07-30 14:10 ` [PATCH 6.18 303/675] net/mlx5: Fix MCIA register buffer overflow on 32 dword reads Greg Kroah-Hartman
@ 2026-07-30 14:10 ` Greg Kroah-Hartman
2026-07-30 14:10 ` [PATCH 6.18 305/675] net/mlx5e: Report zero bandwidth for non-ETS traffic classes Greg Kroah-Hartman
` (375 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:10 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Yael Chemla, Cosmin Ratiu,
Tariq Toukan, Jakub Kicinski, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Yael Chemla <ychemla@nvidia.com>
[ Upstream commit d12956d083eb70f2c6d72711aebaf8c2ce21e170 ]
esw_egress_acl_vlan_create() hardcodes num_dest=0 in its
mlx5_add_flow_rules() call. When invoked from the non-bond path
fwd_dest is NULL and num_dest=0 is correct. When invoked from
esw_acl_egress_ofld_rules_create() during a bond event, fwd_dest is
non-NULL and flow_act.action carries MLX5_FLOW_CONTEXT_ACTION_FWD_DEST,
but _mlx5_add_flow_rules() rejects a non-NULL dest pointer paired with
dest_num<=0 and returns -EINVAL. The error propagates as
"configure slave vport egress fwd, err(-22)". The passive vport's egress
ACL table ends up with its flow groups allocated but no FTEs, so
prio-tagged packets are not popped and bond failover is broken on
prio_tag_required devices.
Fix by passing fwd_dest ? 1 : 0 as num_dest to match the actual number
of destinations supplied.
Fixes: bf773dc0e6d5 ("net/mlx5: E-Switch, Introduce APIs to enable egress acl forward-to-vport rule")
Signed-off-by: Yael Chemla <ychemla@nvidia.com>
Reviewed-by: Cosmin Ratiu <cratiu@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/20260717073306.1242399-1-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/mellanox/mlx5/core/esw/acl/helper.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/esw/acl/helper.c b/drivers/net/ethernet/mellanox/mlx5/core/esw/acl/helper.c
index 3ce455c2535c40..53f064ebd1c181 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/esw/acl/helper.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/esw/acl/helper.c
@@ -71,7 +71,7 @@ int esw_egress_acl_vlan_create(struct mlx5_eswitch *esw,
flow_act.action = flow_action;
vport->egress.allowed_vlan =
mlx5_add_flow_rules(vport->egress.acl, spec,
- &flow_act, fwd_dest, 0);
+ &flow_act, fwd_dest, fwd_dest ? 1 : 0);
if (IS_ERR(vport->egress.allowed_vlan)) {
err = PTR_ERR(vport->egress.allowed_vlan);
esw_warn(esw->dev,
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 305/675] net/mlx5e: Report zero bandwidth for non-ETS traffic classes
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (303 preceding siblings ...)
2026-07-30 14:10 ` [PATCH 6.18 304/675] net/mlx5: E-Switch, fix zero num_dest in prio_tag egress vlan rule Greg Kroah-Hartman
@ 2026-07-30 14:10 ` Greg Kroah-Hartman
2026-07-30 14:10 ` [PATCH 6.18 306/675] net/mlx5e: Reject unsupported CB Shaper TSA in ETS validation Greg Kroah-Hartman
` (374 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:10 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Alexei Lazar, Carolina Jubran,
Tariq Toukan, Pavan Chebbi, Jakub Kicinski, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Alexei Lazar <alazar@nvidia.com>
[ Upstream commit ffb1873b2df11945b8c395e859169248675c91c5 ]
The IEEE 802.1Qaz standard defines that bandwidth allocation percentages
only apply to Enhanced Transmission Selection (ETS) traffic classes.
For STRICT and VENDOR transmission selection algorithms, bandwidth
percentage values are not applicable.
Currently for non-ETS 100 bandwidth is being reported for all traffic
classes in the get operation due to hardware limitation, regardless of
their TSA type.
Fix this by reporting 0 for non-ETS traffic classes.
Fixes: 820c2c5e773d ("net/mlx5e: Read ETS settings directly from firmware")
Signed-off-by: Alexei Lazar <alazar@nvidia.com>
Reviewed-by: Carolina Jubran <cjubran@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Link: https://patch.msgid.link/20260717075125.1244877-2-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/mellanox/mlx5/core/en_dcbnl.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_dcbnl.c b/drivers/net/ethernet/mellanox/mlx5/core/en_dcbnl.c
index cf8f14ce4cd50d..fbd84ab8d61e70 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_dcbnl.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_dcbnl.c
@@ -158,6 +158,13 @@ static int mlx5e_dcbnl_ieee_getets(struct net_device *netdev,
}
memcpy(ets->tc_tsa, priv->dcbx.tc_tsa, sizeof(ets->tc_tsa));
+ /* Report 0 for non ETS TSA */
+ for (i = 0; i < ets->ets_cap; i++) {
+ if (ets->tc_tx_bw[i] == MLX5E_MAX_BW_ALLOC &&
+ priv->dcbx.tc_tsa[i] != IEEE_8021QAZ_TSA_ETS)
+ ets->tc_tx_bw[i] = 0;
+ }
+
return err;
}
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 306/675] net/mlx5e: Reject unsupported CB Shaper TSA in ETS validation
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (304 preceding siblings ...)
2026-07-30 14:10 ` [PATCH 6.18 305/675] net/mlx5e: Report zero bandwidth for non-ETS traffic classes Greg Kroah-Hartman
@ 2026-07-30 14:10 ` Greg Kroah-Hartman
2026-07-30 14:10 ` [PATCH 6.18 307/675] octeontx2-pf: tc: fix egress ratelimiting Greg Kroah-Hartman
` (373 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:10 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Alexei Lazar, Carolina Jubran,
Tariq Toukan, Pavan Chebbi, Jakub Kicinski, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Alexei Lazar <alazar@nvidia.com>
[ Upstream commit 9173e1d3c7c7d49a71eee813091f9e834ec7cee5 ]
Credit Based (CB) TSA is not supported by the mlx5 driver, so reject
any configurations that specify it.
Fixes: 08fb1dacdd76 ("net/mlx5e: Support DCBNL IEEE ETS")
Signed-off-by: Alexei Lazar <alazar@nvidia.com>
Reviewed-by: Carolina Jubran <cjubran@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Link: https://patch.msgid.link/20260717075125.1244877-3-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/mellanox/mlx5/core/en_dcbnl.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_dcbnl.c b/drivers/net/ethernet/mellanox/mlx5/core/en_dcbnl.c
index fbd84ab8d61e70..20db77552545e8 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_dcbnl.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_dcbnl.c
@@ -309,6 +309,14 @@ static int mlx5e_dbcnl_validate_ets(struct net_device *netdev,
}
}
+ for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
+ if (ets->tc_tsa[i] == IEEE_8021QAZ_TSA_CB_SHAPER) {
+ netdev_err(netdev,
+ "Failed to validate ETS: CB Shaper is not supported\n");
+ return -EOPNOTSUPP;
+ }
+ }
+
/* Validate Bandwidth Sum */
for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
if (ets->tc_tsa[i] == IEEE_8021QAZ_TSA_ETS) {
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 307/675] octeontx2-pf: tc: fix egress ratelimiting
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (305 preceding siblings ...)
2026-07-30 14:10 ` [PATCH 6.18 306/675] net/mlx5e: Reject unsupported CB Shaper TSA in ETS validation Greg Kroah-Hartman
@ 2026-07-30 14:10 ` Greg Kroah-Hartman
2026-07-30 14:10 ` [PATCH 6.18 308/675] net: ipv6: fix dif and sdif mismatch in raw6_icmp_error Greg Kroah-Hartman
` (372 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:10 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Hariprasad Kelam, Nitin Shetty J,
Jakub Kicinski, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Hariprasad Kelam <hkelam@marvell.com>
[ Upstream commit bb0d96ebe5f4d1acccf4dc36ca7f01f9a8fa1ba1 ]
The egress rate calculation computes an incorrect mantissa and exponent,
causing up to ~50% deviation from the configured rate at lower speeds.
Rework the computation to follow the hardware rate formula:
rate = 2 * (1 + mantissa/256) * 2^exp / (1 << div_exp)
Keep div_exp = 0 and derive exp and mantissa from half of the requested
rate. Rates below 2 Mbps are floored to the smallest encodable step
(exp = 0, mantissa = 0).
Fixes: e638a83f167e ("octeontx2-pf: TC_MATCHALL egress ratelimiting offload")
Signed-off-by: Hariprasad Kelam <hkelam@marvell.com>
Signed-off-by: Nitin Shetty J <nshettyj@marvell.com>
Link: https://patch.msgid.link/20260717084349.2227796-1-nshettyj@marvell.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
.../ethernet/marvell/octeontx2/nic/otx2_tc.c | 29 ++++++++++---------
1 file changed, 16 insertions(+), 13 deletions(-)
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_tc.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_tc.c
index 26a08d2cfbb1b6..f4906c67d5eee4 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_tc.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_tc.c
@@ -30,6 +30,7 @@
#define OTX2_UNSUPP_LSE_DEPTH GENMASK(6, 4)
#define MCAST_INVALID_GRP (-1U)
+#define RATE_MANTISSA_BITS 8
struct otx2_tc_flow_stats {
u64 bytes;
@@ -90,28 +91,30 @@ static void otx2_get_egress_burst_cfg(struct otx2_nic *nic, u32 burst,
static void otx2_get_egress_rate_cfg(u64 maxrate, u32 *exp,
u32 *mantissa, u32 *div_exp)
{
- u64 tmp;
-
/* Rate calculation by hardware
*
* PIR_ADD = ((256 + mantissa) << exp) / 256
* rate = (2 * PIR_ADD) / ( 1 << div_exp)
* The resultant rate is in Mbps.
+ *
+ * Use div_exp = 0 and compute exp/mantissa for maxrate / 2; the
+ * leading factor of two yields the full rate. Rates below 2 Mbps
+ * are floored to the smallest step (exp = 0, mantissa = 0).
*/
- /* 2Mbps to 100Gbps can be expressed with div_exp = 0.
- * Setting this to '0' will ease the calculation of
- * exponent and mantissa.
- */
*div_exp = 0;
-
if (maxrate) {
- *exp = ilog2(maxrate) ? ilog2(maxrate) - 1 : 0;
- tmp = maxrate - rounddown_pow_of_two(maxrate);
- if (maxrate < MAX_RATE_MANTISSA)
- *mantissa = tmp * 2;
- else
- *mantissa = tmp / (1ULL << (*exp - 7));
+ maxrate = maxrate / 2;
+ if (!maxrate) {
+ /* Rates below 2 Mbps map to the smallest step */
+ *exp = 0;
+ *mantissa = 0;
+ } else {
+ *exp = ilog2(maxrate);
+ /* Clear MSB and derive fractional bits */
+ maxrate &= ~BIT(*exp);
+ *mantissa = (maxrate << RATE_MANTISSA_BITS) >> *exp;
+ }
} else {
/* Instead of disabling rate limiting, set all values to max */
*exp = MAX_RATE_EXPONENT;
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 308/675] net: ipv6: fix dif and sdif mismatch in raw6_icmp_error
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (306 preceding siblings ...)
2026-07-30 14:10 ` [PATCH 6.18 307/675] octeontx2-pf: tc: fix egress ratelimiting Greg Kroah-Hartman
@ 2026-07-30 14:10 ` Greg Kroah-Hartman
2026-07-30 14:10 ` [PATCH 6.18 309/675] ice: allow creating VFs when !CONFIG_ICE_SWITCHDEV Greg Kroah-Hartman
` (371 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:10 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Li RongQing, Joe Damato,
Jakub Kicinski, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Li RongQing <lirongqing@baidu.com>
[ Upstream commit 440e274da4d1b93c7df2cb0ce893c3009dd4db55 ]
In raw6_icmp_error(), raw_v6_match() is called with inet6_iif(skb) passed
to both the 'dif' and 'sdif' arguments. This is a copy-paste or typo error,
as the last argument should represent the secondary interface index (sdif).
This mismatch breaks ICMPv6 error handling for IPv6 raw sockets in VRF
(Virtual Routing and Forwarding) environments. When a raw socket is bound
to a VRF master device, raw_v6_match() fails to find a match because it is
not given the correct sdif value, causing the socket to miss relevant
ICMPv6 error notifications.
Fix this by properly passing inet6_sdif(skb) as the last argument to
raw_v6_match().
Fixes: 5108ab4bf446fa ("net: ipv6: add second dif to raw socket lookups")
Signed-off-by: Li RongQing <lirongqing@baidu.com>
Reviewed-by: Joe Damato <joe@dama.to>
Link: https://patch.msgid.link/20260717143230.1836-1-lirongqing@baidu.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/ipv6/raw.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c
index c534848933ee64..6cb8e32a3061f2 100644
--- a/net/ipv6/raw.c
+++ b/net/ipv6/raw.c
@@ -348,7 +348,7 @@ void raw6_icmp_error(struct sk_buff *skb, int nexthdr,
const struct ipv6hdr *ip6h = (const struct ipv6hdr *)skb->data;
if (!raw_v6_match(net, sk, nexthdr, &ip6h->saddr, &ip6h->daddr,
- inet6_iif(skb), inet6_iif(skb)))
+ inet6_iif(skb), inet6_sdif(skb)))
continue;
rawv6_err(sk, skb, type, code, inner_offset, info);
}
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 309/675] ice: allow creating VFs when !CONFIG_ICE_SWITCHDEV
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (307 preceding siblings ...)
2026-07-30 14:10 ` [PATCH 6.18 308/675] net: ipv6: fix dif and sdif mismatch in raw6_icmp_error Greg Kroah-Hartman
@ 2026-07-30 14:10 ` Greg Kroah-Hartman
2026-07-30 14:10 ` [PATCH 6.18 310/675] ice: fix LAG recipe to profile association Greg Kroah-Hartman
` (370 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:10 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Vincent Chen, Aleksandr Loktionov,
Rafal Romanowski, Tony Nguyen, Jakub Kicinski, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Vincent Chen <vincent.chen@sifive.com>
[ Upstream commit 99d0f42b0e5c57e4c02070a908aaff082881293a ]
Currently ice_eswitch_attach_vf() is called unconditionally in
ice_start_vfs(), which causes VF creation to fail when CONFIG_ICE_SWITCHDEV
is not defined.
Fix this by adding switchdev mode checks at the call sites before
calling ice_eswitch_attach_vf(), consistent with how
ice_eswitch_attach_sf() is already handled in ice_devlink_port_new().
This is similar to commit aacca7a83b97 ("ice: allow creating VFs for
!CONFIG_NET_SWITCHDEV") which fixed the same issue for the previous
ice_eswitch_configure() API.
Fixes: 415db8399d06 ("ice: make representor code generic")
Signed-off-by: Vincent Chen <vincent.chen@sifive.com>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Tested-by: Rafal Romanowski <rafal.romanowski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Link: https://patch.msgid.link/20260717185340.3595286-2-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/intel/ice/ice_eswitch.c | 3 ---
drivers/net/ethernet/intel/ice/ice_sriov.c | 14 ++++++++------
drivers/net/ethernet/intel/ice/ice_vf_lib.c | 3 ++-
3 files changed, 10 insertions(+), 10 deletions(-)
diff --git a/drivers/net/ethernet/intel/ice/ice_eswitch.c b/drivers/net/ethernet/intel/ice/ice_eswitch.c
index c30e27bbfe6e25..b069e6c514fb12 100644
--- a/drivers/net/ethernet/intel/ice/ice_eswitch.c
+++ b/drivers/net/ethernet/intel/ice/ice_eswitch.c
@@ -512,9 +512,6 @@ int ice_eswitch_attach_vf(struct ice_pf *pf, struct ice_vf *vf)
struct ice_repr *repr;
int err;
- if (!ice_is_eswitch_mode_switchdev(pf))
- return 0;
-
repr = ice_repr_create_vf(vf);
if (IS_ERR(repr))
return PTR_ERR(repr);
diff --git a/drivers/net/ethernet/intel/ice/ice_sriov.c b/drivers/net/ethernet/intel/ice/ice_sriov.c
index 843e82fd3bf936..6a0b724e46f9ac 100644
--- a/drivers/net/ethernet/intel/ice/ice_sriov.c
+++ b/drivers/net/ethernet/intel/ice/ice_sriov.c
@@ -484,12 +484,14 @@ static int ice_start_vfs(struct ice_pf *pf)
goto teardown;
}
- retval = ice_eswitch_attach_vf(pf, vf);
- if (retval) {
- dev_err(ice_pf_to_dev(pf), "Failed to attach VF %d to eswitch, error %d",
- vf->vf_id, retval);
- ice_vf_vsi_release(vf);
- goto teardown;
+ if (ice_is_eswitch_mode_switchdev(pf)) {
+ retval = ice_eswitch_attach_vf(pf, vf);
+ if (retval) {
+ dev_err(ice_pf_to_dev(pf), "Failed to attach VF %d to eswitch, error %d",
+ vf->vf_id, retval);
+ ice_vf_vsi_release(vf);
+ goto teardown;
+ }
}
set_bit(ICE_VF_STATE_INIT, vf->vf_states);
diff --git a/drivers/net/ethernet/intel/ice/ice_vf_lib.c b/drivers/net/ethernet/intel/ice/ice_vf_lib.c
index 4f86412a9c0c3a..bab968b05540b1 100644
--- a/drivers/net/ethernet/intel/ice/ice_vf_lib.c
+++ b/drivers/net/ethernet/intel/ice/ice_vf_lib.c
@@ -812,7 +812,8 @@ void ice_reset_all_vfs(struct ice_pf *pf)
}
ice_vf_post_vsi_rebuild(vf);
- ice_eswitch_attach_vf(pf, vf);
+ if (ice_is_eswitch_mode_switchdev(pf))
+ ice_eswitch_attach_vf(pf, vf);
mutex_unlock(&vf->cfg_lock);
}
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 310/675] ice: fix LAG recipe to profile association
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (308 preceding siblings ...)
2026-07-30 14:10 ` [PATCH 6.18 309/675] ice: allow creating VFs when !CONFIG_ICE_SWITCHDEV Greg Kroah-Hartman
@ 2026-07-30 14:10 ` Greg Kroah-Hartman
2026-07-30 14:10 ` [PATCH 6.18 311/675] ice: prevent tstamp ring allocation for non-PF VSI types Greg Kroah-Hartman
` (369 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:10 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Marcin Szycik, Michal Swiatkowski,
Aleksandr Loktionov, Dave Ertman, Simon Horman, Tony Nguyen,
Jakub Kicinski, Sasha Levin, Rinitha S
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Marcin Szycik <marcin.szycik@linux.intel.com>
[ Upstream commit d6da9b7d48599db078aea6144997a381f8d90d45 ]
ice_init_lag() associates recipes to profiles, assuming that Link
Aggregation-related profiles will always have profile ID lower than 70
(ICE_PROFID_IPV6_GTPU_IPV6_TCP_INNER). This value seems arbitrary and
might not always be valid for some versions of DDP package, i.e. LAG
profiles may have profile ID greater than 70. This would lead to
misconfigured switch and LAG not working properly.
Fix it by checking up to maximum profile ID.
Fixes: 1e0f9881ef79 ("ice: Flesh out implementation of support for SRIOV on bonded interface")
Signed-off-by: Marcin Szycik <marcin.szycik@linux.intel.com>
Reviewed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Reviewed-by: Dave Ertman <david.m.ertman@intel.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Tested-by: Rinitha S <sx.rinitha@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Link: https://patch.msgid.link/20260717185340.3595286-7-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/intel/ice/ice_lag.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/intel/ice/ice_lag.c b/drivers/net/ethernet/intel/ice/ice_lag.c
index aebf8e08a297be..e8ab36d0f11d82 100644
--- a/drivers/net/ethernet/intel/ice/ice_lag.c
+++ b/drivers/net/ethernet/intel/ice/ice_lag.c
@@ -2624,7 +2624,7 @@ int ice_init_lag(struct ice_pf *pf)
goto free_lport_res;
/* associate recipes to profiles */
- for (n = 0; n < ICE_PROFID_IPV6_GTPU_IPV6_TCP_INNER; n++) {
+ for (n = 0; n < ICE_MAX_NUM_PROFILES; n++) {
err = ice_aq_get_recipe_to_profile(&pf->hw, n,
&recipe_bits, NULL);
if (err)
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 311/675] ice: prevent tstamp ring allocation for non-PF VSI types
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (309 preceding siblings ...)
2026-07-30 14:10 ` [PATCH 6.18 310/675] ice: fix LAG recipe to profile association Greg Kroah-Hartman
@ 2026-07-30 14:10 ` Greg Kroah-Hartman
2026-07-30 14:10 ` [PATCH 6.18 312/675] ipv6: Change allocation flags to match rcu_read_lock section requirements Greg Kroah-Hartman
` (368 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:10 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Paul Greenwalt, Przemek Kitszel,
Aleksandr Loktionov, Tony Nguyen, Jakub Kicinski, Sasha Levin,
Rinitha S
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Paul Greenwalt <paul.greenwalt@intel.com>
[ Upstream commit 144539bbfd3cea1ab0fb6f5216d6004c1f4f029b ]
The pf->txtime_txqs bitmap tracks which Tx queues have ETF (Earliest
TxTime First) offload enabled. This bitmap is indexed by queue number
and is set by ice_offload_txtime(), which only operates on PF VSI
queues.
However, ice_is_txtime_ena() does not check the VSI type before
consulting the bitmap. When ETF offload is enabled on PF Tx queue 0,
bit 0 is set in pf->txtime_txqs. During a subsequent PCI reset
rebuild, the CTRL VSI's Tx queue 0 is reconfigured and
ice_is_txtime_ena() is called for that ring. Since it only checks
pf->txtime_txqs by queue index without distinguishing VSI type, it
finds bit 0 set and returns true, matching the PF VSI's ETF queue,
not the CTRL VSI's. This causes ice_vsi_cfg_txq() to spuriously
allocate a tstamp_ring for the CTRL VSI ring.
Since CTRL VSI rings have no associated netdev, ice_clean_tx_ring()
takes an early return at the !netdev check before reaching
ice_free_tx_tstamp_ring(), leaking the allocation. Each PCI reset
leaks one 64-byte tstamp_ring.
Fix this by restricting ice_is_txtime_ena() to return true only for
PF VSI rings, since txtime_txqs is only meaningful for PF VSI queues.
Fixes: ccde82e90946 ("ice: add E830 Earliest TxTime First Offload support")
Signed-off-by: Paul Greenwalt <paul.greenwalt@intel.com>
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Tested-by: Rinitha S <sx.rinitha@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Link: https://patch.msgid.link/20260717185340.3595286-11-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/intel/ice/ice.h | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/net/ethernet/intel/ice/ice.h b/drivers/net/ethernet/intel/ice/ice.h
index 6886188043764c..fc4eae0a00cd3b 100644
--- a/drivers/net/ethernet/intel/ice/ice.h
+++ b/drivers/net/ethernet/intel/ice/ice.h
@@ -765,6 +765,9 @@ static inline bool ice_is_txtime_ena(const struct ice_tx_ring *ring)
struct ice_vsi *vsi = ring->vsi;
struct ice_pf *pf = vsi->back;
+ if (vsi->type != ICE_VSI_PF)
+ return false;
+
return test_bit(ring->q_index, pf->txtime_txqs);
}
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 312/675] ipv6: Change allocation flags to match rcu_read_lock section requirements
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (310 preceding siblings ...)
2026-07-30 14:10 ` [PATCH 6.18 311/675] ice: prevent tstamp ring allocation for non-PF VSI types Greg Kroah-Hartman
@ 2026-07-30 14:10 ` Greg Kroah-Hartman
2026-07-30 14:10 ` [PATCH 6.18 313/675] rds: tcp: unregister sysctl before tearing down listen socket Greg Kroah-Hartman
` (367 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:10 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, syzbot+84d4a405ed798b40c96d,
Nikola Z. Ivanov, Ido Schimmel, Jakub Kicinski, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Nikola Z. Ivanov <zlatistiv@gmail.com>
[ Upstream commit 313a123e1fca8827bb463db1f4bb211309764563 ]
Since the call to __ip6_del_rt_siblings has been converted under
rcu read lock and it only has one call point
we should no longer block or yield.
Our stack trace from the syzbot reproducer looks as follows:
__ip6_del_rt_siblings
rtnl_notify (Here we pass gfp_any() -> GFP_KERNEL)
nlmsg_notify
nlmsg_multicast
nlmsg_multicast_filtered
netlink_broadcast_filtered (GFP_KERNEL passed from earlier)
netlink_broadcast_filtered can yield if GFP_KERNEL
is passed, which we do not want to happen.
Fix this by changing the allocation flag of rtnl_notify.
Also change the flag passed to nlmsg_new. Even though it
is not related to the syzbot generated bug it still falls
under the same requirements.
Reported-by: syzbot+84d4a405ed798b40c96d@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=84d4a405ed798b40c96d
Fixes: bd11ff421d36 ("ipv6: Get rid of RTNL for SIOCDELRT and RTM_DELROUTE.")
Signed-off-by: Nikola Z. Ivanov <zlatistiv@gmail.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Link: https://patch.msgid.link/20260719105759.558050-1-zlatistiv@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/ipv6/route.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index ef66a3c86febbf..a45747bfb31a06 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -4011,7 +4011,7 @@ static int __ip6_del_rt_siblings(struct fib6_info *rt, struct fib6_config *cfg)
struct fib6_node *fn;
/* prefer to send a single notification with all hops */
- skb = nlmsg_new(rt6_nlmsg_size(rt), gfp_any());
+ skb = nlmsg_new(rt6_nlmsg_size(rt), GFP_ATOMIC);
if (skb) {
u32 seq = info->nlh ? info->nlh->nlmsg_seq : 0;
@@ -4067,7 +4067,7 @@ static int __ip6_del_rt_siblings(struct fib6_info *rt, struct fib6_config *cfg)
if (skb) {
rtnl_notify(skb, net, info->portid, RTNLGRP_IPV6_ROUTE,
- info->nlh, gfp_any());
+ info->nlh, GFP_ATOMIC);
}
return err;
}
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 313/675] rds: tcp: unregister sysctl before tearing down listen socket
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (311 preceding siblings ...)
2026-07-30 14:10 ` [PATCH 6.18 312/675] ipv6: Change allocation flags to match rcu_read_lock section requirements Greg Kroah-Hartman
@ 2026-07-30 14:10 ` Greg Kroah-Hartman
2026-07-30 14:10 ` [PATCH 6.18 314/675] ptp: netc: explicitly clear TMR_OFF during initialization Greg Kroah-Hartman
` (366 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:10 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, AutonomousCodeSecurity,
Allison Henderson, Cen Zhang (Microsoft), Jakub Kicinski,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Cen Zhang (Microsoft) <blbllhy@gmail.com>
[ Upstream commit 167e54c703ccd4fa028feb568b0d1002020cff86 ]
rds_tcp_exit_net() frees the per-netns RDS TCP listen socket via
rds_tcp_kill_sock() before unregistering the per-netns sysctl table. Since
rds_tcp_skbuf_handler() derives the netns from
rtn->rds_tcp_listen_sock->sk, a concurrent sysctl write can race with
netns teardown and dereference the freed socket/sk.
KASAN reports the race as:
BUG: KASAN: slab-use-after-free in rds_tcp_skbuf_handler+0x2aa/0x2e0
rds_tcp_skbuf_handler net/rds/tcp.c:721
proc_sys_call_handler fs/proc/proc_sysctl.c
vfs_write fs/read_write.c
__x64_sys_pwrite64 fs/read_write.c
Fix this by unregistering the RDS TCP sysctl table before calling
rds_tcp_kill_sock(). unregister_net_sysctl_table() prevents new sysctl
handlers from starting and waits for in-flight handlers to finish, so
the listen socket can then be released safely. The fix was tested
against the linked reproducer.
Fixes: 7f5611cbc487 ("rds: sysctl: rds_tcp_{rcv,snd}buf: avoid using current->nsproxy")
Reported-by: AutonomousCodeSecurity@microsoft.com
Link: https://lore.kernel.org/all/20260719203718.9680-1-blbllhy@gmail.com
Reviewed-by: Allison Henderson <achender@kernel.org>
Signed-off-by: Cen Zhang (Microsoft) <blbllhy@gmail.com>
Link: https://patch.msgid.link/20260719210357.10179-1-blbllhy@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/rds/tcp.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/net/rds/tcp.c b/net/rds/tcp.c
index b66dfcc3efaa0f..06a2d8d48bbacf 100644
--- a/net/rds/tcp.c
+++ b/net/rds/tcp.c
@@ -637,13 +637,13 @@ static void __net_exit rds_tcp_exit_net(struct net *net)
{
struct rds_tcp_net *rtn = net_generic(net, rds_tcp_netid);
- rds_tcp_kill_sock(net);
-
if (rtn->rds_tcp_sysctl)
unregister_net_sysctl_table(rtn->rds_tcp_sysctl);
if (net != &init_net)
kfree(rtn->ctl_table);
+
+ rds_tcp_kill_sock(net);
}
static struct pernet_operations rds_tcp_net_ops = {
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 314/675] ptp: netc: explicitly clear TMR_OFF during initialization
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (312 preceding siblings ...)
2026-07-30 14:10 ` [PATCH 6.18 313/675] rds: tcp: unregister sysctl before tearing down listen socket Greg Kroah-Hartman
@ 2026-07-30 14:10 ` Greg Kroah-Hartman
2026-07-30 14:10 ` [PATCH 6.18 315/675] mctp: check register_netdevice_notifier() error in mctp_device_init() Greg Kroah-Hartman
` (365 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:10 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Clark Wang, Wei Fang,
Vadim Fedorenko, Breno Leitao, Jakub Kicinski, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Clark Wang <xiaoning.wang@nxp.com>
[ Upstream commit c3f2fc231a39e29fe9f0adc14a3ecc3c1260d3c5 ]
The NETC timer does not support function level reset, so TMR_OFF_L/H
registers are not cleared by pcie_flr(). If TMR_OFF was set to a
non-zero value in a previous binding, it will persist across driver
rebind and cause inaccurate PTP time.
There is also a hardware issue: after a warm reset or soft reset,
TMR_OFF_L/H registers appear to be cleared to zero, but the timer clock
domain internally retains the stale value. When the timer is re-enabled,
TMR_CUR_TIME continues to track the old offset until TMR_OFF is written
explicitly. This can cause incorrect PTP timestamps and even PTP clock
synchronization failures.
Per the recommendation from the IP team, explicitly write 0 to TMR_OFF
in netc_timer_init() to flush the internally cached value and ensure
TMR_CUR_TIME follows the freshly initialized counter.
Fixes: 87a201d59963 ("ptp: netc: add NETC V4 Timer PTP driver support")
Signed-off-by: Clark Wang <xiaoning.wang@nxp.com>
Signed-off-by: Wei Fang <wei.fang@nxp.com>
Reviewed-by: Vadim Fedorenko <vadim.fedorenko@linux.dev>
Reviewed-by: Breno Leitao <leitao@debian.org>
Link: https://patch.msgid.link/20260720012508.23227-1-wei.fang@oss.nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/ptp/ptp_netc.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/ptp/ptp_netc.c b/drivers/ptp/ptp_netc.c
index 94e952ee69902e..5e381c354d746a 100644
--- a/drivers/ptp/ptp_netc.c
+++ b/drivers/ptp/ptp_netc.c
@@ -779,6 +779,7 @@ static void netc_timer_init(struct netc_timer *priv)
netc_timer_wr(priv, NETC_TMR_FIPER_CTRL, fiper_ctrl);
netc_timer_wr(priv, NETC_TMR_ECTRL, NETC_TMR_DEFAULT_ETTF_THR);
+ netc_timer_offset_write(priv, 0);
ktime_get_real_ts64(&now);
ns = timespec64_to_ns(&now);
netc_timer_cnt_write(priv, ns);
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 315/675] mctp: check register_netdevice_notifier() error in mctp_device_init()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (313 preceding siblings ...)
2026-07-30 14:10 ` [PATCH 6.18 314/675] ptp: netc: explicitly clear TMR_OFF during initialization Greg Kroah-Hartman
@ 2026-07-30 14:10 ` Greg Kroah-Hartman
2026-07-30 14:10 ` [PATCH 6.18 316/675] net: airoha: fix ETS channel derivation in airoha_tc_setup_qdisc_ets() Greg Kroah-Hartman
` (364 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:10 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Minhong He, Jakub Kicinski,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Minhong He <heminhong@kylinos.cn>
[ Upstream commit d9a33cadc70a94c1582f65e6042e81027cd200c6 ]
mctp_device_init() handles errors from rtnl_af_register() and
rtnl_register_many(), but ignores the return value of
register_netdevice_notifier(). If notifier registration fails, init can
still return success while the module is only partially initialized.
Check the notifier registration error and fail module init early.
Fixes: 583be982d934 ("mctp: Add device handling and netlink interface")
Signed-off-by: Minhong He <heminhong@kylinos.cn>
Link: https://patch.msgid.link/20260720072518.112614-1-heminhong@kylinos.cn
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/mctp/device.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/net/mctp/device.c b/net/mctp/device.c
index 04c5570bacff69..7861d83aaad263 100644
--- a/net/mctp/device.c
+++ b/net/mctp/device.c
@@ -536,7 +536,9 @@ int __init mctp_device_init(void)
{
int err;
- register_netdevice_notifier(&mctp_dev_nb);
+ err = register_netdevice_notifier(&mctp_dev_nb);
+ if (err)
+ return err;
err = rtnl_af_register(&mctp_af_ops);
if (err)
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 316/675] net: airoha: fix ETS channel derivation in airoha_tc_setup_qdisc_ets()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (314 preceding siblings ...)
2026-07-30 14:10 ` [PATCH 6.18 315/675] mctp: check register_netdevice_notifier() error in mctp_device_init() Greg Kroah-Hartman
@ 2026-07-30 14:10 ` Greg Kroah-Hartman
2026-07-30 14:10 ` [PATCH 6.18 317/675] bpf, sockmap: Fix cork use-after-free in tcp_bpf_sendmsg() Greg Kroah-Hartman
` (363 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:10 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Simon Horman, Lorenzo Bianconi,
Jakub Kicinski, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Lorenzo Bianconi <lorenzo@kernel.org>
[ Upstream commit 649ea07fc25a17aa51bff710baac1ab161022a7c ]
Derive the hardware QoS channel from opt->parent instead of opt->handle
in airoha_tc_setup_qdisc_ets(). The ETS qdisc handle is either
user-specified or auto-allocated by qdisc_alloc_handle() and bears no
relation to the HTB leaf classid that identifies the hardware channel.
HTB derives the channel from TC_H_MIN(opt->classid), and ETS is always
attached as a child of an HTB leaf, so its opt->parent matches that
classid. Using opt->handle instead can cause two ETS qdiscs on different
HTB leaves to collide on the same hardware channel, corrupting scheduler
configuration and stats.
Fixes: 20bf7d07c956 ("net: airoha: Add sched ETS offload support")
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://patch.msgid.link/20260720-airoha-ets-handle-fix-v2-1-6f7129ddc06f@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/airoha/airoha_eth.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/airoha/airoha_eth.c b/drivers/net/ethernet/airoha/airoha_eth.c
index 5efd03c2deea77..64ab34e37c36f9 100644
--- a/drivers/net/ethernet/airoha/airoha_eth.c
+++ b/drivers/net/ethernet/airoha/airoha_eth.c
@@ -2326,8 +2326,7 @@ static int airoha_tc_setup_qdisc_ets(struct airoha_gdm_port *port,
if (opt->parent == TC_H_ROOT)
return -EINVAL;
- channel = TC_H_MAJ(opt->handle) >> 16;
- channel = channel % AIROHA_NUM_QOS_CHANNELS;
+ channel = TC_H_MIN(opt->parent) % AIROHA_NUM_QOS_CHANNELS;
switch (opt->command) {
case TC_ETS_REPLACE:
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 317/675] bpf, sockmap: Fix cork use-after-free in tcp_bpf_sendmsg()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (315 preceding siblings ...)
2026-07-30 14:10 ` [PATCH 6.18 316/675] net: airoha: fix ETS channel derivation in airoha_tc_setup_qdisc_ets() Greg Kroah-Hartman
@ 2026-07-30 14:10 ` Greg Kroah-Hartman
2026-07-30 14:10 ` [PATCH 6.18 318/675] drm: renesas: rzg2l_mipi_dsi: Increase reset deassertion delay Greg Kroah-Hartman
` (362 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:10 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Chengfeng Ye, Emil Tsalapatis,
Jakub Sitnicki, Eduard Zingerman, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Chengfeng Ye <nicoyip.dev@gmail.com>
[ Upstream commit 2d66a033864e27ab8d5e44cb36f31d9d2413bee4 ]
tcp_bpf_sendmsg() keeps msg_tx across sk_stream_wait_memory(), which
drops and reacquires the socket lock. Its error path tries to decide
whether msg_tx names the local temporary message by comparing it with
the current value of psock->cork.
This comparison is unsafe when two threads send on the same socket:
Thread A Thread B
msg_tx = psock->cork
sk_msg_alloc() fails
sk_stream_wait_memory()
releases the socket lock acquires the socket lock
completes the cork
psock->cork = NULL
frees the cork
reacquires the socket lock
msg_tx != psock->cork
sk_msg_free(msg_tx)
The stale cork is therefore mistaken for the local temporary message
and freed again. KASAN reported:
BUG: KASAN: slab-use-after-free in sk_msg_free+0x49/0x50
Read of size 4 at addr ffff88810c908800 by task poc/90
Call Trace:
sk_msg_free+0x49/0x50
tcp_bpf_sendmsg+0x14f5/0x1cc0
__sys_sendto+0x32c/0x3a0
__x64_sys_sendto+0xdb/0x1b0
Allocated by task 89:
__kasan_kmalloc+0x8f/0xa0
tcp_bpf_sendmsg+0x16b3/0x1cc0
Freed by task 91:
__kasan_slab_free+0x43/0x70
kfree+0x131/0x3c0
tcp_bpf_sendmsg+0xec3/0x1cc0
msg_tx can only name the stack-local tmp or the shared cork. Check for
tmp directly so a changed psock->cork cannot turn a shared message into
an apparent local one.
Fixes: 604326b41a6f ("bpf, sockmap: convert to generic sk_msg interface")
Signed-off-by: Chengfeng Ye <nicoyip.dev@gmail.com>
Reviewed-by: Emil Tsalapatis <emil@etsalapatis.com>
Reviewed-by: Jakub Sitnicki <jakub@cloudflare.com>
Link: https://lore.kernel.org/bpf/87fr18lmzo.fsf%40cloudflare.com/
Link: https://lore.kernel.org/netdev/20260719161630.2901208-1-nicoyip.dev%40gmail.com/ [v1]
Link: https://patch.msgid.link/20260724103856.3399001-1-nicoyip.dev@gmail.com
Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/ipv4/tcp_bpf.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/ipv4/tcp_bpf.c b/net/ipv4/tcp_bpf.c
index 7a3f0b244c8fc8..c27e797eff275a 100644
--- a/net/ipv4/tcp_bpf.c
+++ b/net/ipv4/tcp_bpf.c
@@ -589,7 +589,7 @@ static int tcp_bpf_sendmsg(struct sock *sk, struct msghdr *msg, size_t size)
wait_for_memory:
err = sk_stream_wait_memory(sk, &timeo);
if (err) {
- if (msg_tx && msg_tx != psock->cork)
+ if (msg_tx == &tmp)
sk_msg_free(sk, msg_tx);
goto out_err;
}
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 318/675] drm: renesas: rzg2l_mipi_dsi: Increase reset deassertion delay
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (316 preceding siblings ...)
2026-07-30 14:10 ` [PATCH 6.18 317/675] bpf, sockmap: Fix cork use-after-free in tcp_bpf_sendmsg() Greg Kroah-Hartman
@ 2026-07-30 14:10 ` Greg Kroah-Hartman
2026-07-30 14:10 ` [PATCH 6.18 319/675] drm: renesas: rzg2l_mipi_dsi: Move rzg2l_mipi_dsi_set_display_timing() Greg Kroah-Hartman
` (361 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:10 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Tommaso Merciai, Biju Das
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Biju Das <biju.das.jz@bp.renesas.com>
commit 7cbba8a8ba0219a267844d3116dbc77cecb4fcf8 upstream.
The RZ/G2L hardware manual (Rev. 1.50, May 2025), Section 34.4.2.1,
requires waiting at least 1 msec after deasserting the CMN_RSTB signal
before the DSI-Tx module is ready. Increase the delay from 1 usec to
1 msec by replacing udelay(1) with fsleep(1000) for RZ/G2L SoCs.
Fixes: 7a043f978ed1 ("drm: rcar-du: Add RZ/G2L DSI driver")
Cc: stable@vger.kernel.org
Reviewed-by: Tommaso Merciai <tommaso.merciai.xr@bp.renesas.com>
Tested-by: Tommaso Merciai <tommaso.merciai.xr@bp.renesas.com>
Link: https://patch.msgid.link/20260330104450.128512-3-biju.das.jz@bp.renesas.com
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c
+++ b/drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c
@@ -272,7 +272,7 @@ static int rzg2l_mipi_dsi_dphy_init(stru
if (ret < 0)
return ret;
- udelay(1);
+ fsleep(1000);
return 0;
}
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 319/675] drm: renesas: rzg2l_mipi_dsi: Move rzg2l_mipi_dsi_set_display_timing()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (317 preceding siblings ...)
2026-07-30 14:10 ` [PATCH 6.18 318/675] drm: renesas: rzg2l_mipi_dsi: Increase reset deassertion delay Greg Kroah-Hartman
@ 2026-07-30 14:10 ` Greg Kroah-Hartman
2026-07-30 14:10 ` [PATCH 6.18 320/675] drm/tidss: Fix missing drm_bridge_add() call Greg Kroah-Hartman
` (360 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:10 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Tommaso Merciai, Biju Das
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Biju Das <biju.das.jz@bp.renesas.com>
commit 5bfa858d53bb252d7a012c2e0a97ae18182edfb1 upstream.
The RZ/G2L hardware manual (Rev. 1.50, May 2025), Section 34.4.2.1,
requires display timings to be set after the HS clock is started. Move
rzg2l_mipi_dsi_set_display_timing() from
rzg2l_mipi_dsi_atomic_pre_enable() to rzg2l_mipi_dsi_atomic_enable(),
placing it after rzg2l_mipi_dsi_start_hs_clock(). Drop the unused ret
variable from rzg2l_mipi_dsi_atomic_pre_enable().
Fixes: 5ce16c169a4c ("drm: renesas: rz-du: Add atomic_pre_enable")
Fixes: 7a043f978ed1 ("drm: rcar-du: Add RZ/G2L DSI driver")
Cc: stable@vger.kernel.org
Reviewed-by: Tommaso Merciai <tommaso.merciai.xr@bp.renesas.com>
Tested-by: Tommaso Merciai <tommaso.merciai.xr@bp.renesas.com>
Link: https://patch.msgid.link/20260330104450.128512-2-biju.das.jz@bp.renesas.com
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c | 16 ++++++++++------
1 file changed, 10 insertions(+), 6 deletions(-)
--- a/drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c
+++ b/drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c
@@ -604,29 +604,33 @@ static void rzg2l_mipi_dsi_atomic_pre_en
const struct drm_display_mode *mode;
struct drm_connector *connector;
struct drm_crtc *crtc;
- int ret;
connector = drm_atomic_get_new_connector_for_encoder(state, bridge->encoder);
crtc = drm_atomic_get_new_connector_state(state, connector)->crtc;
mode = &drm_atomic_get_new_crtc_state(state, crtc)->adjusted_mode;
- ret = rzg2l_mipi_dsi_startup(dsi, mode);
- if (ret < 0)
- return;
-
- rzg2l_mipi_dsi_set_display_timing(dsi, mode);
+ rzg2l_mipi_dsi_startup(dsi, mode);
}
static void rzg2l_mipi_dsi_atomic_enable(struct drm_bridge *bridge,
struct drm_atomic_state *state)
{
struct rzg2l_mipi_dsi *dsi = bridge_to_rzg2l_mipi_dsi(bridge);
+ const struct drm_display_mode *mode;
+ struct drm_connector *connector;
+ struct drm_crtc *crtc;
int ret;
ret = rzg2l_mipi_dsi_start_hs_clock(dsi);
if (ret < 0)
goto err_stop;
+ connector = drm_atomic_get_new_connector_for_encoder(state, bridge->encoder);
+ crtc = drm_atomic_get_new_connector_state(state, connector)->crtc;
+ mode = &drm_atomic_get_new_crtc_state(state, crtc)->adjusted_mode;
+
+ rzg2l_mipi_dsi_set_display_timing(dsi, mode);
+
ret = rzg2l_mipi_dsi_start_video(dsi);
if (ret < 0)
goto err_stop_clock;
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 320/675] drm/tidss: Fix missing drm_bridge_add() call
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (318 preceding siblings ...)
2026-07-30 14:10 ` [PATCH 6.18 319/675] drm: renesas: rzg2l_mipi_dsi: Move rzg2l_mipi_dsi_set_display_timing() Greg Kroah-Hartman
@ 2026-07-30 14:10 ` Greg Kroah-Hartman
2026-07-30 14:10 ` [PATCH 6.18 321/675] drm/rockchip: cdn-dp: add missing check in cdn_dp_config_video() Greg Kroah-Hartman
` (359 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:10 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Maxime Ripard, Tomi Valkeinen
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
commit 83084bb36847cbd2b13743f7333aaca12613a72b upstream.
tidss encoder-bridge is not added with drm_bridge_add() call, which
leads to:
[drm] Missing drm_bridge_add() before attach
Add the missing call, using devm_drm_bridge_add() variant to get the
drm_bridge_remove() handled automatically.
The commit marked with the Fixes tag (from v6.6) is the commit that
added the encoder bridge without drm_bridge_add(). However, this fix is
not directly applicable there as devm_drm_bridge_alloc() was not used to
alloc the bridge, so using devm version for drm_bridge_add() wouldn't be
safe. Instead, drm_bridge_add() and drm_bridge_remove() would be needed
there, but that would require new plumbing code as we don't have a
separate cleanup function in the tidss_encoder.c, not in the tidss_kms.c
from which the encoder is created.
Also, there has been no reported bugs caused by the missing
drm_bridge_add(). The drm_bridge_add() initializes the bridge's
hpd_mutex, but HPD is not used for the encoder bridge. drm_bridge_add()
also adds the bridge to the global bridge_list, which is only used in
of_drm_find_bridge(), and again that is not used for the encoder bridge.
Thus, while the original commit is not right, there should be no bugs
caused by it, and for the time being I'm not sending a patch for the
stable kernels for the original commit.
This fix applies on top of commit 66cdf05f8548 ("drm/tidss: encoder:
convert to devm_drm_bridge_alloc()"), which changes the tidss_encoder.c
to use the devm variant (added in v6.17). The warning print was added in
v6.19, so applying this fix to v6.17+ gets rid of the warning for all
kernel versions.
Cc: stable@vger.kernel.org # v6.17+
Fixes: c932ced6b585 ("drm/tidss: Update encoder/bridge chain connect model")
Acked-by: Maxime Ripard <mripard@kernel.org>
Link: https://patch.msgid.link/20260311-tidss-minor-fixes-v2-2-cb4479784458@ideasonboard.com
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/tidss/tidss_encoder.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/gpu/drm/tidss/tidss_encoder.c b/drivers/gpu/drm/tidss/tidss_encoder.c
index 81a04f767770..db467bbcdb77 100644
--- a/drivers/gpu/drm/tidss/tidss_encoder.c
+++ b/drivers/gpu/drm/tidss/tidss_encoder.c
@@ -106,6 +106,8 @@ int tidss_encoder_create(struct tidss_device *tidss,
enc = &t_enc->encoder;
enc->possible_crtcs = possible_crtcs;
+ devm_drm_bridge_add(tidss->dev, &t_enc->bridge);
+
/* Attaching first bridge to the encoder */
ret = drm_bridge_attach(enc, &t_enc->bridge, NULL,
DRM_BRIDGE_ATTACH_NO_CONNECTOR);
--
2.55.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 321/675] drm/rockchip: cdn-dp: add missing check in cdn_dp_config_video()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (319 preceding siblings ...)
2026-07-30 14:10 ` [PATCH 6.18 320/675] drm/tidss: Fix missing drm_bridge_add() call Greg Kroah-Hartman
@ 2026-07-30 14:10 ` Greg Kroah-Hartman
2026-07-30 14:10 ` [PATCH 6.18 322/675] drm/rockchip: analogix_dp: Add missing error check for platform_get_resource() Greg Kroah-Hartman
` (358 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:10 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Sergey Shtylyov, Chaoyi Chen,
Heiko Stuebner
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Sergey Shtylyov <s.shtylyov@auroraos.dev>
commit 46c31e1604d121221167cb09380de8c7d53290b9 upstream.
The result of cdn_dp_reg_write() is checked everywhere (with the error
being logged by the callers) except one place in cdn_dp_config_video().
Add the missing result check, bailing out early on error...
Found by Linux Verification Center (linuxtesting.org) with the Svace static
analysis tool.
Fixes: 1a0f7ed3abe2 ("drm/rockchip: cdn-dp: add cdn DP support for rk3399")
Signed-off-by: Sergey Shtylyov <s.shtylyov@auroraos.dev>
Cc: stable@vger.kernel.org
Reviewed-by: Chaoyi Chen <chaoyi.chen@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patch.msgid.link/adf6b313-f7db-4d8f-9000-8c65446ba041@auroraos.dev
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/rockchip/cdn-dp-reg.c | 2 ++
1 file changed, 2 insertions(+)
--- a/drivers/gpu/drm/rockchip/cdn-dp-reg.c
+++ b/drivers/gpu/drm/rockchip/cdn-dp-reg.c
@@ -683,6 +683,8 @@ int cdn_dp_config_video(struct cdn_dp_de
val = div_u64(8 * (symbol + 1), bit_per_pix) - val;
val += 2;
ret = cdn_dp_reg_write(dp, DP_VC_TABLE(15), val);
+ if (ret)
+ goto err_config_video;
switch (video->color_depth) {
case 6:
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 322/675] drm/rockchip: analogix_dp: Add missing error check for platform_get_resource()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (320 preceding siblings ...)
2026-07-30 14:10 ` [PATCH 6.18 321/675] drm/rockchip: cdn-dp: add missing check in cdn_dp_config_video() Greg Kroah-Hartman
@ 2026-07-30 14:10 ` Greg Kroah-Hartman
2026-07-30 14:10 ` [PATCH 6.18 323/675] drm/imagination: Count paired job fence as dependency in prepare_job() Greg Kroah-Hartman
` (357 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:10 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Chen Ni, Dragan Simic,
Heiko Stuebner
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Chen Ni <nichen@iscas.ac.cn>
commit 45895f4d4d5f222d07412f90664f88b059627859 upstream.
Add missing error check for platform_get_resource() return value to
prevent NULL pointer dereference when memory resource is not available.
Fixes: 718b3bb9c0ab ("drm/rockchip: analogix_dp: Expand device data to support multiple edp display")
Cc: stable@vger.kernel.org
Signed-off-by: Chen Ni <nichen@iscas.ac.cn>
Reviewed-by: Dragan Simic <dsimic@manjaro.org>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patch.msgid.link/20260209033123.1089370-1-nichen@iscas.ac.cn
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/rockchip/analogix_dp-rockchip.c | 2 ++
1 file changed, 2 insertions(+)
--- a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
+++ b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
@@ -469,6 +469,8 @@ static int rockchip_dp_probe(struct plat
return -ENOMEM;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res)
+ return -EINVAL;
i = 0;
while (dp_data[i].reg) {
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 323/675] drm/imagination: Count paired job fence as dependency in prepare_job()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (321 preceding siblings ...)
2026-07-30 14:10 ` [PATCH 6.18 322/675] drm/rockchip: analogix_dp: Add missing error check for platform_get_resource() Greg Kroah-Hartman
@ 2026-07-30 14:10 ` Greg Kroah-Hartman
2026-07-30 14:10 ` [PATCH 6.18 324/675] drm/bridge: cdns-dsi: Replace deprecated UNIVERSAL_DEV_PM_OPS() Greg Kroah-Hartman
` (356 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:10 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Alessio Belle, Brajesh Gupta,
Matt Coster
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Alessio Belle <alessio.belle@imgtec.com>
commit 9cd74f935306cd857f46686975c43383e1d95f94 upstream.
The DRM scheduler's prepare_job() callback counts the remaining
non-signaled native dependencies for a job, preventing job submission
until those (plus job data and fence update) can fit in the job queue's
CCCB.
This means checking which dependencies can be waited upon in the
firmware, i.e. whether they are backed by a UFO object, i.e. whether
their drm_sched_fence::parent has been assigned to a
pvr_queue_fence::base fence. That happens when the job owning the fence
is submitted to the firmware.
Paired geometry and fragment jobs are submitted at the same time, which
means the dependency between them can't be checked this way before
submission.
Update job_count_remaining_native_deps() to take into account the
dependency between paired jobs.
This fixes cases where prepare_job() underestimated the space left in
an almost full fragment CCCB, wrongly unblocking run_job(), which then
returned early without writing the full sequence of commands to the
CCCB.
The above lead to kernel warnings such as the following and potentially
job timeouts (depending on waiters on the missing commands):
[ 375.702979] WARNING: drivers/gpu/drm/imagination/pvr_cccb.c:178 at pvr_cccb_write_command_with_header+0x2c4/0x330 [powervr], CPU#1: kworker/u16:3/47
[ 375.703160] Modules linked in:
[ 375.703571] CPU: 1 UID: 0 PID: 47 Comm: kworker/u16:3 Tainted: G W 7.0.0-rc2-g817eb6b11ad5 #40 PREEMPT
[ 375.703613] Tainted: [W]=WARN
[ 375.703627] Hardware name: Texas Instruments AM625 SK (DT)
[ 375.703645] Workqueue: powervr-sched drm_sched_run_job_work [gpu_sched]
[ 375.703741] pstate: 80000005 (Nzcv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
[ 375.703764] pc : pvr_cccb_write_command_with_header+0x2c4/0x330 [powervr]
[ 375.703847] lr : pvr_queue_submit_job_to_cccb+0x578/0xa70 [powervr]
[ 375.703921] sp : ffff800084a97650
[ 375.703934] x29: ffff800084a97740 x28: 0000000000000958 x27: ffff80008565d000
[ 375.703979] x26: 0000000000000030 x25: ffff800084a97680 x24: 0000000000001000
[ 375.704017] x23: ffff800084a97820 x22: 1ffff00010952ecc x21: 0000000000000008
[ 375.704056] x20: 00000000000006a8 x19: ffff00002ff7da88 x18: 0000000000000000
[ 375.704093] x17: 0000000020020000 x16: 0000000000020000 x15: 0000000000000000
[ 375.704132] x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000
[ 375.704168] x11: 000000000000f2f2 x10: 00000000f3000000 x9 : 00000000f3f3f3f3
[ 375.704206] x8 : 00000000f2f2f200 x7 : ffff700010952ecc x6 : 0000000000000008
[ 375.704243] x5 : 0000000000000000 x4 : 1ffff00010acba00 x3 : 0000000000000000
[ 375.704279] x2 : 0000000000000007 x1 : 0000000000000fff x0 : 000000000000002f
[ 375.704317] Call trace:
[ 375.704331] pvr_cccb_write_command_with_header+0x2c4/0x330 [powervr] (P)
[ 375.704411] pvr_queue_submit_job_to_cccb+0x578/0xa70 [powervr]
[ 375.704487] pvr_queue_run_job+0x3a4/0x990 [powervr]
[ 375.704562] drm_sched_run_job_work+0x580/0xd48 [gpu_sched]
[ 375.704623] process_one_work+0x520/0x1288
[ 375.704658] worker_thread+0x3f0/0xb3c
[ 375.704680] kthread+0x334/0x3d8
[ 375.704706] ret_from_fork+0x10/0x20
[ 375.704736] ---[ end trace 0000000000000000 ]---
Fixes: eaf01ee5ba28 ("drm/imagination: Implement job submission and scheduling")
Cc: stable@vger.kernel.org
Signed-off-by: Alessio Belle <alessio.belle@imgtec.com>
Reviewed-by: Brajesh Gupta <brajesh.gupta@imgtec.com>
Link: https://patch.msgid.link/20260330-job-submission-fixes-cleanup-v1-1-7de8c09cef8c@imgtec.com
Signed-off-by: Matt Coster <matt.coster@imgtec.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/imagination/pvr_queue.c | 27 +++++++++++++++++++++++----
1 file changed, 23 insertions(+), 4 deletions(-)
--- a/drivers/gpu/drm/imagination/pvr_queue.c
+++ b/drivers/gpu/drm/imagination/pvr_queue.c
@@ -179,7 +179,7 @@ static const struct dma_fence_ops pvr_qu
/**
* to_pvr_queue_job_fence() - Return a pvr_queue_fence object if the fence is
- * backed by a UFO.
+ * already backed by a UFO.
* @f: The dma_fence to turn into a pvr_queue_fence.
*
* Return:
@@ -356,6 +356,15 @@ static u32 job_cmds_size(struct pvr_job
pvr_cccb_get_size_of_cmd_with_hdr(job->cmd_len);
}
+static bool
+is_paired_job_fence(struct dma_fence *fence, struct pvr_job *job)
+{
+ /* This assumes "fence" is one of "job"'s drm_sched_job::dependencies */
+ return job->type == DRM_PVR_JOB_TYPE_FRAGMENT &&
+ job->paired_job &&
+ &job->paired_job->base.s_fence->scheduled == fence;
+}
+
/**
* job_count_remaining_native_deps() - Count the number of non-signaled native dependencies.
* @job: Job to operate on.
@@ -371,6 +380,17 @@ static unsigned long job_count_remaining
xa_for_each(&job->base.dependencies, index, fence) {
struct pvr_queue_fence *jfence;
+ if (is_paired_job_fence(fence, job)) {
+ /*
+ * A fence between paired jobs won't resolve to a pvr_queue_fence (i.e.
+ * be backed by a UFO) until the jobs have been submitted, together.
+ * The submitting code will insert a partial render fence command for this.
+ */
+ WARN_ON(dma_fence_is_signaled(fence));
+ remaining_count++;
+ continue;
+ }
+
jfence = to_pvr_queue_job_fence(fence);
if (!jfence)
continue;
@@ -630,9 +650,8 @@ static void pvr_queue_submit_job_to_cccb
if (!jfence)
continue;
- /* Skip the partial render fence, we will place it at the end. */
- if (job->type == DRM_PVR_JOB_TYPE_FRAGMENT && job->paired_job &&
- &job->paired_job->base.s_fence->scheduled == fence)
+ /* This fence will be placed last, as partial render fence. */
+ if (is_paired_job_fence(fence, job))
continue;
if (dma_fence_is_signaled(&jfence->base))
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 324/675] drm/bridge: cdns-dsi: Replace deprecated UNIVERSAL_DEV_PM_OPS()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (322 preceding siblings ...)
2026-07-30 14:10 ` [PATCH 6.18 323/675] drm/imagination: Count paired job fence as dependency in prepare_job() Greg Kroah-Hartman
@ 2026-07-30 14:10 ` Greg Kroah-Hartman
2026-07-30 14:10 ` [PATCH 6.18 325/675] drm/dp/mst: fix OOB reads in remote DPCD/I2C sideband reply parsers Greg Kroah-Hartman
` (355 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:10 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Tomi Valkeinen, Vitor Soares,
Luca Ceresoli
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Vitor Soares <vitor.soares@toradex.com>
commit 2d8b08844c0ecc6f2002fa68711e779aa18c8585 upstream.
The deprecated UNIVERSAL_DEV_PM_OPS() macro uses the provided callbacks
for both runtime PM and system sleep. This causes the DSI clocks to be
disabled twice: once during runtime suspend and again during system
suspend, resulting in a WARN message from the clock framework when
attempting to disable already-disabled clocks.
[ 84.384540] clk:231:5 already disabled
[ 84.388314] WARNING: CPU: 2 PID: 531 at /drivers/clk/clk.c:1181 clk_core_disable+0xa4/0xac
...
[ 84.579183] Call trace:
[ 84.581624] clk_core_disable+0xa4/0xac
[ 84.585457] clk_disable+0x30/0x4c
[ 84.588857] cdns_dsi_suspend+0x20/0x58 [cdns_dsi]
[ 84.593651] pm_generic_suspend+0x2c/0x44
[ 84.597661] ti_sci_pd_suspend+0xbc/0x15c
[ 84.601670] dpm_run_callback+0x8c/0x14c
[ 84.605588] __device_suspend+0x1a0/0x56c
[ 84.609594] dpm_suspend+0x17c/0x21c
[ 84.613165] dpm_suspend_start+0xa0/0xa8
[ 84.617083] suspend_devices_and_enter+0x12c/0x634
[ 84.621872] pm_suspend+0x1fc/0x368
To address this issue, replace UNIVERSAL_DEV_PM_OPS() with
RUNTIME_PM_OPS(). Bridge and panel drivers should only deal with runtime
PM, as the DRM framework manages system-wide power transitions through
the bridge enable() and disable() hooks.
Link: https://lore.kernel.org/all/fbde0659-78f3-46e4-98cf-d832f765a18b@ideasonboard.com/
Cc: stable@vger.kernel.org # 6.1.x
Fixes: e19233955d9e ("drm/bridge: Add Cadence DSI driver")
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Signed-off-by: Vitor Soares <vitor.soares@toradex.com>
Reviewed-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Link: https://patch.msgid.link/20260505134705.188661-2-ivitro@gmail.com
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/bridge/cadence/cdns-dsi-core.c | 11 ++++++-----
1 file changed, 6 insertions(+), 5 deletions(-)
--- a/drivers/gpu/drm/bridge/cadence/cdns-dsi-core.c
+++ b/drivers/gpu/drm/bridge/cadence/cdns-dsi-core.c
@@ -1230,7 +1230,7 @@ static const struct mipi_dsi_host_ops cd
.transfer = cdns_dsi_transfer,
};
-static int __maybe_unused cdns_dsi_resume(struct device *dev)
+static int cdns_dsi_resume(struct device *dev)
{
struct cdns_dsi *dsi = dev_get_drvdata(dev);
@@ -1241,7 +1241,7 @@ static int __maybe_unused cdns_dsi_resum
return 0;
}
-static int __maybe_unused cdns_dsi_suspend(struct device *dev)
+static int cdns_dsi_suspend(struct device *dev)
{
struct cdns_dsi *dsi = dev_get_drvdata(dev);
@@ -1251,8 +1251,9 @@ static int __maybe_unused cdns_dsi_suspe
return 0;
}
-static UNIVERSAL_DEV_PM_OPS(cdns_dsi_pm_ops, cdns_dsi_suspend, cdns_dsi_resume,
- NULL);
+static const struct dev_pm_ops cdns_dsi_pm_ops = {
+ RUNTIME_PM_OPS(cdns_dsi_suspend, cdns_dsi_resume, NULL)
+};
static int cdns_dsi_drm_probe(struct platform_device *pdev)
{
@@ -1399,7 +1400,7 @@ static struct platform_driver cdns_dsi_p
.driver = {
.name = "cdns-dsi",
.of_match_table = cdns_dsi_of_match,
- .pm = &cdns_dsi_pm_ops,
+ .pm = pm_ptr(&cdns_dsi_pm_ops),
},
};
module_platform_driver(cdns_dsi_platform_driver);
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 325/675] drm/dp/mst: fix OOB reads in remote DPCD/I2C sideband reply parsers
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (323 preceding siblings ...)
2026-07-30 14:10 ` [PATCH 6.18 324/675] drm/bridge: cdns-dsi: Replace deprecated UNIVERSAL_DEV_PM_OPS() Greg Kroah-Hartman
@ 2026-07-30 14:10 ` Greg Kroah-Hartman
2026-07-30 14:10 ` [PATCH 6.18 326/675] drm/dp/mst: fix buffer overflows in sideband chunk accumulation Greg Kroah-Hartman
` (354 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:10 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Ashutosh Desai, Lyude Paul
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Ashutosh Desai <ashutoshdesai993@gmail.com>
commit 1a8f537f5a1eeac941f262fe73078d6b08ba83c0 upstream.
drm_dp_sideband_parse_remote_dpcd_read() reads num_bytes from the raw
message and then unconditionally does:
memcpy(bytes, &raw->msg[idx], num_bytes);
without checking that idx + num_bytes <= raw->curlen. raw->msg[] is
256 bytes; if a malicious or misbehaving MST hub sets num_bytes larger
than the remaining payload, the memcpy reads past the received data
into whatever follows in raw->msg[].
drm_dp_sideband_parse_remote_i2c_read_ack() has the same flaw (noted
with a /* TODO check */ comment since the code was introduced).
Fix both functions by using a single combined check
(idx + num_bytes > curlen) before each memcpy. Since num_bytes is u8,
it is always >= 0, so this strictly subsumes the simpler idx > curlen
form and no separate step is needed.
Fixes: ad7f8a1f9ced ("drm/helper: add Displayport multi-stream helper (v0.6)")
Cc: <stable@vger.kernel.org> # v3.17+
Signed-off-by: Ashutosh Desai <ashutoshdesai993@gmail.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>
[added missing fixes tag]
Signed-off-by: Lyude Paul <lyude@redhat.com>
Link: https://patch.msgid.link/20260510201733.2882224-1-ashutoshdesai993@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/display/drm_dp_mst_topology.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
--- a/drivers/gpu/drm/display/drm_dp_mst_topology.c
+++ b/drivers/gpu/drm/display/drm_dp_mst_topology.c
@@ -871,7 +871,7 @@ static bool drm_dp_sideband_parse_remote
goto fail_len;
repmsg->u.remote_dpcd_read_ack.num_bytes = raw->msg[idx];
idx++;
- if (idx > raw->curlen)
+ if (idx + repmsg->u.remote_dpcd_read_ack.num_bytes > raw->curlen)
goto fail_len;
memcpy(repmsg->u.remote_dpcd_read_ack.bytes, &raw->msg[idx], repmsg->u.remote_dpcd_read_ack.num_bytes);
@@ -907,7 +907,9 @@ static bool drm_dp_sideband_parse_remote
goto fail_len;
repmsg->u.remote_i2c_read_ack.num_bytes = raw->msg[idx];
idx++;
- /* TODO check */
+ if (idx + repmsg->u.remote_i2c_read_ack.num_bytes > raw->curlen)
+ goto fail_len;
+
memcpy(repmsg->u.remote_i2c_read_ack.bytes, &raw->msg[idx], repmsg->u.remote_i2c_read_ack.num_bytes);
return true;
fail_len:
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 326/675] drm/dp/mst: fix buffer overflows in sideband chunk accumulation
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (324 preceding siblings ...)
2026-07-30 14:10 ` [PATCH 6.18 325/675] drm/dp/mst: fix OOB reads in remote DPCD/I2C sideband reply parsers Greg Kroah-Hartman
@ 2026-07-30 14:10 ` Greg Kroah-Hartman
2026-07-30 14:10 ` [PATCH 6.18 327/675] drm/imagination: Fit paired fragment job in the correct CCCB Greg Kroah-Hartman
` (353 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:10 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Ashutosh Desai, Lyude Paul
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Ashutosh Desai <ashutoshdesai993@gmail.com>
commit 55bd5e685bda455b9b50c835f8c8442d52a344a3 upstream.
drm_dp_sideband_append_payload() has three related bugs when processing
device-provided sideband reply data:
1. Zero-length curchunk_len underflow: msg_len is a 6-bit field taken
directly from the DP sideband header. If a device sends msg_len=0,
curchunk_len is set to zero. The condition (curchunk_idx >= curchunk_len)
is immediately true, and curchunk_len-1 wraps to 255 (u8 underflow).
drm_dp_msg_data_crc4() reads 255 bytes from chunk[48], then memcpy()
writes 255 bytes into msg[], both far out of bounds.
2. chunk[48] overflow: curchunk_len can reach 63 (6-bit field). chunk[] is
only 48 bytes. Multi-iteration payload assembly appends 16-byte blocks
until curchunk_idx reaches curchunk_len, writing up to 15 bytes past
the end of chunk[] into msg[].
3. msg[256] overflow: each chunk contributes (curchunk_len-1) bytes to
msg[]. No check ensures curlen + (curchunk_len-1) stays within msg[256],
so the memcpy can spill into adjacent struct fields.
All three are reachable from any DP MST device that can forge sideband
reply messages on a physical connection.
Fixes: ad7f8a1f9ced ("drm/helper: add Displayport multi-stream helper (v0.6)")
Cc: <stable@vger.kernel.org> # v3.17+
Signed-off-by: Ashutosh Desai <ashutoshdesai993@gmail.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>
Signed-off-by: Lyude Paul <lyude@redhat.com>
Link: https://patch.msgid.link/20260410041901.2438960-1-ashutoshdesai993@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/display/drm_dp_mst_topology.c | 9 +++++++++
1 file changed, 9 insertions(+)
--- a/drivers/gpu/drm/display/drm_dp_mst_topology.c
+++ b/drivers/gpu/drm/display/drm_dp_mst_topology.c
@@ -789,6 +789,12 @@ static bool drm_dp_sideband_append_paylo
{
u8 crc4;
+ /* curchunk_len must be >= 1 (min 1 CRC byte) and fit in chunk[] */
+ if (!msg->curchunk_len ||
+ msg->curchunk_len > ARRAY_SIZE(msg->chunk) ||
+ msg->curchunk_idx + replybuflen > ARRAY_SIZE(msg->chunk))
+ return false;
+
memcpy(&msg->chunk[msg->curchunk_idx], replybuf, replybuflen);
msg->curchunk_idx += replybuflen;
@@ -799,6 +805,9 @@ static bool drm_dp_sideband_append_paylo
print_hex_dump(KERN_DEBUG, "wrong crc",
DUMP_PREFIX_NONE, 16, 1,
msg->chunk, msg->curchunk_len, false);
+ /* Guard against accumulated msg[] overflow */
+ if (msg->curlen + msg->curchunk_len - 1 > ARRAY_SIZE(msg->msg))
+ return false;
/* copy chunk into bigger msg */
memcpy(&msg->msg[msg->curlen], msg->chunk, msg->curchunk_len - 1);
msg->curlen += msg->curchunk_len - 1;
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 327/675] drm/imagination: Fit paired fragment job in the correct CCCB
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (325 preceding siblings ...)
2026-07-30 14:10 ` [PATCH 6.18 326/675] drm/dp/mst: fix buffer overflows in sideband chunk accumulation Greg Kroah-Hartman
@ 2026-07-30 14:10 ` Greg Kroah-Hartman
2026-07-30 14:10 ` [PATCH 6.18 328/675] drm/dp/mst: fix OOB reads on 2-byte fields in sideband reply parsers Greg Kroah-Hartman
` (352 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:10 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Alessio Belle, Brajesh Gupta,
Matt Coster
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Alessio Belle <alessio.belle@imgtec.com>
commit 4baf9e70cb756d78dd56419f8baee2978a72d0c3 upstream.
For geometry jobs with a paired fragment job, at the moment, the
DRM scheduler's prepare_job() callback:
- checks for internal (driver) dependencies for the geometry job;
- calls into pvr_queue_get_paired_frag_job_dep() to check for external
dependencies for the fragment job (the two jobs are submitted together
but the common scheduler code doesn't know about it, so this needs to
be done at this point in time);
- calls into the prepare_job() callback again, but for the fragment job,
to check its internal dependencies as well, passing the fragment job's
drm_sched_job and the geometry job's drm_sched_entity / pvr_queue.
The problem with the last step is that pvr_queue_prepare_job() doesn't
always take the mismatched fragment job and geometry queue into account,
in particular when checking whether there is space for the fragment
command to be submitted, so the code ends up checking for space in the
geometry (i.e. wrong) CCCB.
The rest of the nested prepare_job() callback happens to work fine at
the moment as the other internal dependencies are not relevant for a
paired fragment job.
Move the initialisation of a paired fragment job's done fence and CCCB
fence to pvr_queue_get_paired_frag_job_dep(), inferring the correct
queue from the fragment job itself.
This fixes cases where prepare_job() wrongly assumed that there was
enough space for a paired fragment job in its own CCCB, unblocking
run_job(), which then returned early without writing the full sequence
of commands to the CCCB.
The above lead to kernel warnings such as the following and potentially
job timeouts (depending on waiters on the missing commands):
[ 552.421075] WARNING: drivers/gpu/drm/imagination/pvr_cccb.c:178 at pvr_cccb_write_command_with_header+0x2c4/0x330 [powervr], CPU#2: kworker/u16:5/63
[ 552.421230] Modules linked in:
[ 552.421592] CPU: 2 UID: 0 PID: 63 Comm: kworker/u16:5 Tainted: G W 7.0.0-rc2-gc5d053e4dccb #39 PREEMPT
[ 552.421625] Tainted: [W]=WARN
[ 552.421637] Hardware name: Texas Instruments AM625 SK (DT)
[ 552.421655] Workqueue: powervr-sched drm_sched_run_job_work [gpu_sched]
[ 552.421744] pstate: 80000005 (Nzcv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
[ 552.421766] pc : pvr_cccb_write_command_with_header+0x2c4/0x330 [powervr]
[ 552.421850] lr : pvr_queue_submit_job_to_cccb+0x57c/0xa74 [powervr]
[ 552.421923] sp : ffff800084c47650
[ 552.421936] x29: ffff800084c47740 x28: 0000000000000df8 x27: ffff800088a77000
[ 552.421979] x26: 0000000000000030 x25: ffff800084c47680 x24: 0000000000001000
[ 552.422017] x23: ffff800084c47820 x22: 1ffff00010988ecc x21: 0000000000000008
[ 552.422055] x20: 0000000000000208 x19: ffff000006ad5a88 x18: 0000000000000000
[ 552.422093] x17: 0000000020020000 x16: 0000000000020000 x15: 0000000000000000
[ 552.422130] x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000
[ 552.422167] x11: 000000000000f2f2 x10: 00000000f3000000 x9 : 00000000f3f3f3f3
[ 552.422204] x8 : 00000000f2f2f200 x7 : ffff700010988ecc x6 : 0000000000000008
[ 552.422241] x5 : 0000000000000000 x4 : 1ffff0001114ee00 x3 : 0000000000000000
[ 552.422278] x2 : 0000000000000007 x1 : 0000000000000fff x0 : 000000000000002f
[ 552.422316] Call trace:
[ 552.422330] pvr_cccb_write_command_with_header+0x2c4/0x330 [powervr] (P)
[ 552.422411] pvr_queue_submit_job_to_cccb+0x57c/0xa74 [powervr]
[ 552.422486] pvr_queue_run_job+0x3a4/0x990 [powervr]
[ 552.422562] drm_sched_run_job_work+0x580/0xd48 [gpu_sched]
[ 552.422623] process_one_work+0x520/0x1288
[ 552.422657] worker_thread+0x3f0/0xb3c
[ 552.422679] kthread+0x334/0x3d8
[ 552.422706] ret_from_fork+0x10/0x20
Fixes: eaf01ee5ba28 ("drm/imagination: Implement job submission and scheduling")
Cc: stable@vger.kernel.org
Signed-off-by: Alessio Belle <alessio.belle@imgtec.com>
Reviewed-by: Brajesh Gupta <brajesh.gupta@imgtec.com>
Link: https://patch.msgid.link/20260330-job-submission-fixes-cleanup-v1-2-7de8c09cef8c@imgtec.com
Signed-off-by: Matt Coster <matt.coster@imgtec.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/imagination/pvr_queue.c | 32 ++++++++++++++------------------
1 file changed, 14 insertions(+), 18 deletions(-)
--- a/drivers/gpu/drm/imagination/pvr_queue.c
+++ b/drivers/gpu/drm/imagination/pvr_queue.c
@@ -488,10 +488,11 @@ pvr_queue_get_job_kccb_fence(struct pvr_
}
static struct dma_fence *
-pvr_queue_get_paired_frag_job_dep(struct pvr_queue *queue, struct pvr_job *job)
+pvr_queue_get_paired_frag_job_dep(struct pvr_job *job)
{
struct pvr_job *frag_job = job->type == DRM_PVR_JOB_TYPE_GEOMETRY ?
job->paired_job : NULL;
+ struct pvr_queue *frag_queue = frag_job ? frag_job->ctx->queues.fragment : NULL;
struct dma_fence *f;
unsigned long index;
@@ -510,7 +511,10 @@ pvr_queue_get_paired_frag_job_dep(struct
return dma_fence_get(f);
}
- return frag_job->base.sched->ops->prepare_job(&frag_job->base, &queue->entity);
+ /* Initialize the paired fragment job's done_fence, so we can signal it. */
+ pvr_queue_job_fence_init(frag_job->done_fence, frag_queue);
+
+ return pvr_queue_get_job_cccb_fence(frag_queue, frag_job);
}
/**
@@ -529,11 +533,6 @@ pvr_queue_prepare_job(struct drm_sched_j
struct pvr_queue *queue = container_of(s_entity, struct pvr_queue, entity);
struct dma_fence *internal_dep = NULL;
- /*
- * Initialize the done_fence, so we can signal it. This must be done
- * here because otherwise by the time of run_job() the job will end up
- * in the pending list without a valid fence.
- */
if (job->type == DRM_PVR_JOB_TYPE_FRAGMENT && job->paired_job) {
/*
* This will be called on a paired fragment job after being
@@ -543,18 +542,15 @@ pvr_queue_prepare_job(struct drm_sched_j
*/
if (job->paired_job->has_pm_ref)
return NULL;
-
- /*
- * In this case we need to use the job's own ctx to initialise
- * the done_fence. The other steps are done in the ctx of the
- * paired geometry job.
- */
- pvr_queue_job_fence_init(job->done_fence,
- job->ctx->queues.fragment);
- } else {
- pvr_queue_job_fence_init(job->done_fence, queue);
}
+ /*
+ * Initialize the done_fence, so we can signal it. This must be done
+ * here because otherwise by the time of run_job() the job will end up
+ * in the pending list without a valid fence.
+ */
+ pvr_queue_job_fence_init(job->done_fence, queue);
+
/* CCCB fence is used to make sure we have enough space in the CCCB to
* submit our commands.
*/
@@ -575,7 +571,7 @@ pvr_queue_prepare_job(struct drm_sched_j
/* The paired job fence should come last, when everything else is ready. */
if (!internal_dep)
- internal_dep = pvr_queue_get_paired_frag_job_dep(queue, job);
+ internal_dep = pvr_queue_get_paired_frag_job_dep(job);
return internal_dep;
}
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 328/675] drm/dp/mst: fix OOB reads on 2-byte fields in sideband reply parsers
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (326 preceding siblings ...)
2026-07-30 14:10 ` [PATCH 6.18 327/675] drm/imagination: Fit paired fragment job in the correct CCCB Greg Kroah-Hartman
@ 2026-07-30 14:10 ` Greg Kroah-Hartman
2026-07-30 14:10 ` [PATCH 6.18 329/675] drm/amdgpu/gfx: fix cleaner shader IB buffer overflow Greg Kroah-Hartman
` (351 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:10 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Ashutosh Desai, Lyude Paul
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Ashutosh Desai <ashutoshdesai993@gmail.com>
commit 6b89ba3dba2f583626fb693e47e951ffb8bf591f upstream.
Three sideband reply parsers read 16-bit fields as:
val = (raw->msg[idx] << 8) | (raw->msg[idx+1]);
and check bounds only after the fact. When idx == raw->curlen,
raw->msg[idx+1] reads one byte past the received message data into
the following struct fields (curchunk_len, curchunk_idx, curlen).
Affected functions:
- drm_dp_sideband_parse_enum_path_resources_ack()
full_payload_bw_number and avail_payload_bw_number fields
- drm_dp_sideband_parse_allocate_payload_ack()
allocated_pbn field
- drm_dp_sideband_parse_query_payload_ack()
allocated_pbn field
Fix by using a single combined check (idx + 2 > curlen) before each
2-byte read. Since the check is strictly tighter than idx > curlen,
no separate step is needed.
Fixes: ad7f8a1f9ced ("drm/helper: add Displayport multi-stream helper (v0.6)")
Cc: <stable@vger.kernel.org> # v3.17+
Signed-off-by: Ashutosh Desai <ashutoshdesai993@gmail.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>
[added fixes tag]
Signed-off-by: Lyude Paul <lyude@redhat.com>
Link: https://patch.msgid.link/20260510203128.2884846-1-ashutoshdesai993@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/display/drm_dp_mst_topology.c | 17 ++++-------------
1 file changed, 4 insertions(+), 13 deletions(-)
--- a/drivers/gpu/drm/display/drm_dp_mst_topology.c
+++ b/drivers/gpu/drm/display/drm_dp_mst_topology.c
@@ -934,16 +934,13 @@ static bool drm_dp_sideband_parse_enum_p
repmsg->u.path_resources.port_number = (raw->msg[idx] >> 4) & 0xf;
repmsg->u.path_resources.fec_capable = raw->msg[idx] & 0x1;
idx++;
- if (idx > raw->curlen)
+ if (idx + 2 > raw->curlen)
goto fail_len;
repmsg->u.path_resources.full_payload_bw_number = (raw->msg[idx] << 8) | (raw->msg[idx+1]);
idx += 2;
- if (idx > raw->curlen)
+ if (idx + 2 > raw->curlen)
goto fail_len;
repmsg->u.path_resources.avail_payload_bw_number = (raw->msg[idx] << 8) | (raw->msg[idx+1]);
- idx += 2;
- if (idx > raw->curlen)
- goto fail_len;
return true;
fail_len:
DRM_DEBUG_KMS("enum resource parse length fail %d %d\n", idx, raw->curlen);
@@ -961,12 +958,9 @@ static bool drm_dp_sideband_parse_alloca
goto fail_len;
repmsg->u.allocate_payload.vcpi = raw->msg[idx];
idx++;
- if (idx > raw->curlen)
+ if (idx + 2 > raw->curlen)
goto fail_len;
repmsg->u.allocate_payload.allocated_pbn = (raw->msg[idx] << 8) | (raw->msg[idx+1]);
- idx += 2;
- if (idx > raw->curlen)
- goto fail_len;
return true;
fail_len:
DRM_DEBUG_KMS("allocate payload parse length fail %d %d\n", idx, raw->curlen);
@@ -980,12 +974,9 @@ static bool drm_dp_sideband_parse_query_
repmsg->u.query_payload.port_number = (raw->msg[idx] >> 4) & 0xf;
idx++;
- if (idx > raw->curlen)
+ if (idx + 2 > raw->curlen)
goto fail_len;
repmsg->u.query_payload.allocated_pbn = (raw->msg[idx] << 8) | (raw->msg[idx + 1]);
- idx += 2;
- if (idx > raw->curlen)
- goto fail_len;
return true;
fail_len:
DRM_DEBUG_KMS("query payload parse length fail %d %d\n", idx, raw->curlen);
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 329/675] drm/amdgpu/gfx: fix cleaner shader IB buffer overflow
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (327 preceding siblings ...)
2026-07-30 14:10 ` [PATCH 6.18 328/675] drm/dp/mst: fix OOB reads on 2-byte fields in sideband reply parsers Greg Kroah-Hartman
@ 2026-07-30 14:10 ` Greg Kroah-Hartman
2026-07-30 14:11 ` [PATCH 6.18 330/675] drm/amdgpu/uvd: Fix forcing MSG, FB BOs into VCPU segment when it isnt at 0 (v2) Greg Kroah-Hartman
` (350 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:10 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Lijo Lazar, Asad Kamal, Alex Deucher
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Asad Kamal <asad.kamal@amd.com>
commit 3e864bf2a32a1cbdf1e0f9c5a5a4176e8575f4a3 upstream.
The cleaner shader sysfs path allocates a 16-dword (64 byte) IB but
incorrectly fills (align_mask + 1) dwords. On GFX rings align_mask is
0xff, so the loop wrote 256 dwords into a 64-byte buffer, causing a
kernel page fault.
The IB only needs to be a minimal NOP shell to schedule the job; the
cleaner shader itself is emitted on the ring via emit_cleaner_shader().
Fill 16 dwords to match the allocation.
v2: Use ib_size_dw variable (Lijo)
Fixes: d361ad5d2fc0 ("drm/amdgpu: Add sysfs interface for running cleaner shader")
Suggested-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Asad Kamal <asad.kamal@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit bf21af331ebf72d0935fd70c73192414a422c03a)
CC: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c
@@ -1456,12 +1456,13 @@ static int amdgpu_gfx_run_cleaner_shader
struct amdgpu_device *adev = ring->adev;
struct drm_gpu_scheduler *sched = &ring->sched;
struct drm_sched_entity entity;
+ unsigned int ib_size_dw = 16;
static atomic_t counter;
struct dma_fence *f;
struct amdgpu_job *job;
struct amdgpu_ib *ib;
void *owner;
- int i, r;
+ int r;
/* Initialize the scheduler entity */
r = drm_sched_entity_init(&entity, DRM_SCHED_PRIORITY_NORMAL,
@@ -1479,7 +1480,7 @@ static int amdgpu_gfx_run_cleaner_shader
owner = (void *)(unsigned long)atomic_inc_return(&counter);
r = amdgpu_job_alloc_with_ib(ring->adev, &entity, owner,
- 64, 0, &job,
+ ib_size_dw * sizeof(uint32_t), 0, &job,
AMDGPU_KERNEL_JOB_ID_CLEANER_SHADER);
if (r)
goto err;
@@ -1489,9 +1490,8 @@ static int amdgpu_gfx_run_cleaner_shader
job->run_cleaner_shader = true;
ib = &job->ibs[0];
- for (i = 0; i <= ring->funcs->align_mask; ++i)
- ib->ptr[i] = ring->funcs->nop;
- ib->length_dw = ring->funcs->align_mask + 1;
+ memset32(ib->ptr, ring->funcs->nop, ib_size_dw);
+ ib->length_dw = ib_size_dw;
f = amdgpu_job_submit(job);
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 330/675] drm/amdgpu/uvd: Fix forcing MSG, FB BOs into VCPU segment when it isnt at 0 (v2)
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (328 preceding siblings ...)
2026-07-30 14:10 ` [PATCH 6.18 329/675] drm/amdgpu/gfx: fix cleaner shader IB buffer overflow Greg Kroah-Hartman
@ 2026-07-30 14:11 ` Greg Kroah-Hartman
2026-07-30 14:11 ` [PATCH 6.18 331/675] drm/amdgpu/uvd: Place VCPU BO only in VRAM for UVD 4.x and older Greg Kroah-Hartman
` (349 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:11 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Christian König,
Timur Kristóf, Alex Deucher
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Timur Kristóf <timur.kristof@gmail.com>
commit 32bd35f068a3507a1b3922cd12ea2985fc58c85b upstream.
UVD 4.x and older can only access MSG, FEEDBACK buffers from a
specific 256M VRAM segment that the VCPU BO is also located in.
We already modify all placements of the given BO to ensure
the BO is placed within this segment.
Previously, it always assumed that the VCPU segment is
the first 256M of VRAM, even though under some conditions
the VCPU BO could be allocated outside this segment,
which made UVD non-functional as the BOs were
not inside the same segment as the UVD VCPU BO.
Solve that by using the segment where the VCPU BO actually is.
This fixes an issue with UVD failing to initialize on SI/CIK
when resizable BAR is enabled and the VCPU BO is allocated
in a different segment.
v2:
- For other BOs, keep using the same UVD segment as before.
Closes: https://gitlab.freedesktop.org/drm/amd/-/work_items/3851
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit cbfd4d3fc2061a1ec8e9d36e65973ac3e813358a)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c | 33 +++++++++++++++++++++++---------
1 file changed, 24 insertions(+), 9 deletions(-)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c
@@ -135,7 +135,7 @@ MODULE_FIRMWARE(FIRMWARE_VEGA12);
MODULE_FIRMWARE(FIRMWARE_VEGA20);
static void amdgpu_uvd_idle_work_handler(struct work_struct *work);
-static void amdgpu_uvd_force_into_uvd_segment(struct amdgpu_bo *abo);
+static void amdgpu_uvd_force_into_vcpu_segment(struct amdgpu_bo *abo);
static int amdgpu_uvd_create_msg_bo_helper(struct amdgpu_device *adev,
uint32_t size,
@@ -158,7 +158,7 @@ static int amdgpu_uvd_create_msg_bo_help
amdgpu_bo_kunmap(bo);
amdgpu_bo_unpin(bo);
amdgpu_bo_placement_from_domain(bo, AMDGPU_GEM_DOMAIN_VRAM);
- amdgpu_uvd_force_into_uvd_segment(bo);
+ amdgpu_uvd_force_into_vcpu_segment(bo);
r = ttm_bo_validate(&bo->tbo, &bo->placement, &ctx);
if (r)
goto err;
@@ -544,6 +544,24 @@ void amdgpu_uvd_free_handles(struct amdg
}
}
+static void amdgpu_uvd_force_into_vcpu_segment(struct amdgpu_bo *bo)
+{
+ struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
+ struct amdgpu_bo *vcpu_bo = adev->uvd.inst[0].vcpu_bo;
+ struct amdgpu_res_cursor vcpu_cur;
+
+ amdgpu_res_first(vcpu_bo->tbo.resource, 0,
+ amdgpu_bo_size(vcpu_bo), &vcpu_cur);
+
+ bo->placement.num_placement = 1;
+ bo->placement.placement = &bo->placements[0];
+ bo->placements[0].fpfn = ALIGN_DOWN(vcpu_cur.start, SZ_256M) >> PAGE_SHIFT;
+ bo->placements[0].lpfn = bo->placements[0].fpfn + (SZ_256M >> PAGE_SHIFT);
+ bo->placements[0].mem_type = vcpu_bo->tbo.resource->mem_type;
+ if (bo->placements[0].mem_type == TTM_PL_VRAM)
+ bo->placements[0].flags |= TTM_PL_FLAG_CONTIGUOUS;
+}
+
static void amdgpu_uvd_force_into_uvd_segment(struct amdgpu_bo *abo)
{
int i;
@@ -594,13 +612,10 @@ static int amdgpu_uvd_cs_pass1(struct am
if (!ctx->parser->adev->uvd.address_64_bit) {
/* check if it's a message or feedback command */
cmd = amdgpu_ib_get_value(ctx->ib, ctx->idx) >> 1;
- if (cmd == 0x0 || cmd == 0x3) {
- /* yes, force it into VRAM */
- uint32_t domain = AMDGPU_GEM_DOMAIN_VRAM;
-
- amdgpu_bo_placement_from_domain(bo, domain);
- }
- amdgpu_uvd_force_into_uvd_segment(bo);
+ if (cmd == 0x0 || cmd == 0x3)
+ amdgpu_uvd_force_into_vcpu_segment(bo);
+ else
+ amdgpu_uvd_force_into_uvd_segment(bo);
r = ttm_bo_validate(&bo->tbo, &bo->placement, &tctx);
}
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 331/675] drm/amdgpu/uvd: Place VCPU BO only in VRAM for UVD 4.x and older
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (329 preceding siblings ...)
2026-07-30 14:11 ` [PATCH 6.18 330/675] drm/amdgpu/uvd: Fix forcing MSG, FB BOs into VCPU segment when it isnt at 0 (v2) Greg Kroah-Hartman
@ 2026-07-30 14:11 ` Greg Kroah-Hartman
2026-07-30 14:11 ` [PATCH 6.18 332/675] drm/amdgpu: check amdgpu_vm_bo_find() result in GET_MAPPING_INFO Greg Kroah-Hartman
` (348 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:11 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Timur Kristóf,
Christian König, Alex Deucher
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Timur Kristóf <timur.kristof@gmail.com>
commit 8002b744ad70055ef11ff7d0a7d685bfe8ffe6e4 upstream.
These UVD versions don't fully support GPUVM and are only
validated to work when their VCPU BO is placed in VRAM.
Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 01b8dfc0660db5d6cdd62c22dc20f774a26ce853)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c | 17 +++++++++++------
1 file changed, 11 insertions(+), 6 deletions(-)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c
@@ -188,6 +188,7 @@ int amdgpu_uvd_sw_init(struct amdgpu_dev
const struct common_firmware_header *hdr;
unsigned int family_id;
int i, j, r;
+ u32 vcpu_bo_domain;
INIT_DELAYED_WORK(&adev->uvd.idle_work, amdgpu_uvd_idle_work_handler);
@@ -319,12 +320,20 @@ int amdgpu_uvd_sw_init(struct amdgpu_dev
if (adev->firmware.load_type != AMDGPU_FW_LOAD_PSP)
bo_size += AMDGPU_GPU_PAGE_ALIGN(le32_to_cpu(hdr->ucode_size_bytes) + 8);
+ /* UVD 5.0 and newer HW can use 64 bit addressing. */
+ adev->uvd.address_64_bit =
+ !amdgpu_device_ip_block_version_cmp(adev, AMD_IP_BLOCK_TYPE_UVD, 5, 0);
+
+ vcpu_bo_domain = AMDGPU_GEM_DOMAIN_VRAM;
+ if (adev->uvd.address_64_bit)
+ vcpu_bo_domain |= AMDGPU_GEM_DOMAIN_GTT;
+
for (j = 0; j < adev->uvd.num_uvd_inst; j++) {
if (adev->uvd.harvest_config & (1 << j))
continue;
+
r = amdgpu_bo_create_kernel(adev, bo_size, PAGE_SIZE,
- AMDGPU_GEM_DOMAIN_VRAM |
- AMDGPU_GEM_DOMAIN_GTT,
+ vcpu_bo_domain,
&adev->uvd.inst[j].vcpu_bo,
&adev->uvd.inst[j].gpu_addr,
&adev->uvd.inst[j].cpu_addr);
@@ -339,10 +348,6 @@ int amdgpu_uvd_sw_init(struct amdgpu_dev
adev->uvd.filp[i] = NULL;
}
- /* from uvd v5.0 HW addressing capacity increased to 64 bits */
- if (!amdgpu_device_ip_block_version_cmp(adev, AMD_IP_BLOCK_TYPE_UVD, 5, 0))
- adev->uvd.address_64_bit = true;
-
r = amdgpu_uvd_create_msg_bo_helper(adev, 128 << 10, &adev->uvd.ib_bo);
if (r)
return r;
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 332/675] drm/amdgpu: check amdgpu_vm_bo_find() result in GET_MAPPING_INFO
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (330 preceding siblings ...)
2026-07-30 14:11 ` [PATCH 6.18 331/675] drm/amdgpu/uvd: Place VCPU BO only in VRAM for UVD 4.x and older Greg Kroah-Hartman
@ 2026-07-30 14:11 ` Greg Kroah-Hartman
2026-07-30 14:11 ` [PATCH 6.18 333/675] drm/sysfb: Do not page-align visible size of the framebuffer Greg Kroah-Hartman
` (347 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:11 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Alex Deucher, Mario Limonciello
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Mario Limonciello <mario.limonciello@amd.com>
commit 93475c34111916df71c63e510fc52db01351f809 upstream.
The AMDGPU_GEM_OP_GET_MAPPING_INFO path of amdgpu_gem_op_ioctl() looks
up the bo_va for the buffer object in the caller's VM via
amdgpu_vm_bo_find(), but uses the returned pointer without checking it.
amdgpu_vm_bo_find() returns NULL when the BO has no bo_va in that VM,
which is the normal case for a BO that has never been mapped. The result
is fed straight into amdgpu_vm_bo_va_for_each_valid_mapping(), which
expands to list_for_each_entry(mapping, &(bo_va)->valids, list) and
dereferences bo_va, causing a NULL pointer dereference.
This is reachable by any process able to issue the ioctl (render group)
simply by requesting mapping info for an unmapped BO.
Return -ENOENT when no bo_va is found, jumping to out_exec so the
drm_exec context and GEM object reference are released.
Fixes: 4d82724f7f2b ("drm/amdgpu: Add mapping info option for GEM_OP ioctl")
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 528b19377affc1cc7362a70a254c1dda793595f9)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c | 5 +++++
1 file changed, 5 insertions(+)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
@@ -1075,6 +1075,11 @@ int amdgpu_gem_op_ioctl(struct drm_devic
* If that number is larger than the size of the array, the ioctl must
* be retried.
*/
+ if (!bo_va) {
+ r = -ENOENT;
+ goto out_exec;
+ }
+
if (args->num_entries > INT_MAX / sizeof(*vm_entries)) {
r = -EINVAL;
goto out_exec;
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 333/675] drm/sysfb: Do not page-align visible size of the framebuffer
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (331 preceding siblings ...)
2026-07-30 14:11 ` [PATCH 6.18 332/675] drm/amdgpu: check amdgpu_vm_bo_find() result in GET_MAPPING_INFO Greg Kroah-Hartman
@ 2026-07-30 14:11 ` Greg Kroah-Hartman
2026-07-30 14:11 ` [PATCH 6.18 334/675] drm/sysfb: Avoid truncating maximum stride Greg Kroah-Hartman
` (346 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:11 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Thomas Zimmermann,
Javier Martinez Canillas, dri-devel
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Thomas Zimmermann <tzimmermann@suse.de>
commit 134844856c399bfa9462a159dcf860bfdb748055 upstream.
Only return the actually visible size of the system framebuffer in
drm_sysfb_get_visible_size_si(). Drivers use this size value for
reserving access to framebuffer memory. Increasing the value can
make later attempts to do so fail.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Fixes: 32ae90c66fb6 ("drm/sysfb: Add efidrm for EFI displays")
Fixes: a84eb6abe2b6 ("drm/sysfb: Add vesadrm for VESA displays")
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Javier Martinez Canillas <javierm@redhat.com>
Cc: dri-devel@lists.freedesktop.org
Cc: <stable@vger.kernel.org> # v6.16+
Link: https://patch.msgid.link/20260618084327.46567-2-tzimmermann@suse.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/sysfb/drm_sysfb_screen_info.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/gpu/drm/sysfb/drm_sysfb_screen_info.c
+++ b/drivers/gpu/drm/sysfb/drm_sysfb_screen_info.c
@@ -67,7 +67,7 @@ EXPORT_SYMBOL(drm_sysfb_get_stride_si);
u64 drm_sysfb_get_visible_size_si(struct drm_device *dev, const struct screen_info *si,
unsigned int height, unsigned int stride, u64 size)
{
- u64 vsize = PAGE_ALIGN(height * stride);
+ u64 vsize = height * stride;
return drm_sysfb_get_validated_size0(dev, "visible size", vsize, size);
}
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 334/675] drm/sysfb: Avoid truncating maximum stride
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (332 preceding siblings ...)
2026-07-30 14:11 ` [PATCH 6.18 333/675] drm/sysfb: Do not page-align visible size of the framebuffer Greg Kroah-Hartman
@ 2026-07-30 14:11 ` Greg Kroah-Hartman
2026-07-30 14:11 ` [PATCH 6.18 335/675] drm/amdgpu/gfx9: Fix Ring and IB test fail after mode2 Greg Kroah-Hartman
` (345 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:11 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Thomas Zimmermann, Sashiko,
Javier Martinez Canillas, dri-devel
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Thomas Zimmermann <tzimmermann@suse.de>
commit 9206b22fb959f4a9cf1921f34aed0df1dcb1ab04 upstream.
Passing a maximum as 64-bit type to drm_sysfb_get_validated_int0()
can truncate the value to 32 bits. Use drm_sysfb_get_validated_size0(),
which uses 64-bit arithmetics. Then test the returned stride against
the limits of int to avoid truncations in the returned value. A valid
stride is in the range of [1, INT_MAX] inclusive.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reported-by: Sashiko <sashiko-bot@kernel.org>
Closes: https://lore.kernel.org/dri-devel/20260617114016.5A5991F000E9@smtp.kernel.org/
Fixes: 32ae90c66fb6 ("drm/sysfb: Add efidrm for EFI displays")
Fixes: a84eb6abe2b6 ("drm/sysfb: Add vesadrm for VESA displays")
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Javier Martinez Canillas <javierm@redhat.com>
Cc: dri-devel@lists.freedesktop.org
Cc: <stable@vger.kernel.org> # v6.16+
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patch.msgid.link/20260618084327.46567-5-tzimmermann@suse.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/sysfb/drm_sysfb_screen_info.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
--- a/drivers/gpu/drm/sysfb/drm_sysfb_screen_info.c
+++ b/drivers/gpu/drm/sysfb/drm_sysfb_screen_info.c
@@ -56,11 +56,17 @@ int drm_sysfb_get_stride_si(struct drm_d
unsigned int width, unsigned int height, u64 size)
{
u64 lfb_linelength = si->lfb_linelength;
+ s64 stride;
if (!lfb_linelength)
lfb_linelength = drm_format_info_min_pitch(format, 0, width);
- return drm_sysfb_get_validated_int0(dev, "stride", lfb_linelength, div64_u64(size, height));
+ stride = drm_sysfb_get_validated_size0(dev, "stride", lfb_linelength,
+ div64_u64(size, height));
+ if (stride < INT_MIN || stride > INT_MAX)
+ return -EINVAL;
+
+ return (int)stride; /* stride or negative errno code */
}
EXPORT_SYMBOL(drm_sysfb_get_stride_si);
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 335/675] drm/amdgpu/gfx9: Fix Ring and IB test fail after mode2
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (333 preceding siblings ...)
2026-07-30 14:11 ` [PATCH 6.18 334/675] drm/sysfb: Avoid truncating maximum stride Greg Kroah-Hartman
@ 2026-07-30 14:11 ` Greg Kroah-Hartman
2026-07-30 14:11 ` [PATCH 6.18 336/675] drm/amdgpu: Fix amdgpu_bo_move() when old_mem and new_mem are both GTT Greg Kroah-Hartman
` (344 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:11 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Jiqian Chen, Huang Rui,
Timur Kristóf, Alex Deucher
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jiqian Chen <Jiqian.Chen@amd.com>
commit 85ed06d990ff73212b5a91a406671cabd962e521 upstream.
For Renior APU with gfx9, in some test scenarios with disabling
ring_reset, like accessing an unmapped invalid address, it can
trigger a gpu job timeout event, then driver uses Mode2 reset
to reset GPU, but after Mode2 compute Ring test and IB test fail
randomly. It because the HQDs of MECs are always active before or
after Mode2, that causes MECs use stale HQDs when MECs are unhalted
before driver restore MQDs, and causes CPC and CPF are still stuck
after Mode2, then causes compute Ring and IB tests fail.
So, add sequences to deactivate HQDs of MECs in suspend IP function
of the resetting process.
v2: Move all sequences into a new function gfx_v9_0_cp_mode2_clear_state (Ray Huang)
To check reset Mode2 method in the if condition (Ray Huang)
v3: Move all sequences before Mode2 instead of after Mode2 (Timur Kristóf)
v4: Call amdgpu_gfx_rlc_enter/exit_safe_mode int the begin and end of
gfx_v9_0_deactivate_kcq_hqd (Alex Deucher)
Signed-off-by: Jiqian Chen <Jiqian.Chen@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit c3988a7ad4799514447294f04f063b422e0551df)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c | 39 ++++++++++++++++++++++++++++++++++
1 file changed, 39 insertions(+)
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
@@ -4045,6 +4045,41 @@ static int gfx_v9_0_hw_init(struct amdgp
return r;
}
+static void gfx_v9_0_deactivate_kcq_hqd(struct amdgpu_device *adev)
+{
+ amdgpu_gfx_rlc_enter_safe_mode(adev, 0);
+ for (int i = 0; i < adev->gfx.num_compute_rings; i++) {
+ u32 tmp;
+ struct amdgpu_ring *ring = &adev->gfx.compute_ring[i];
+
+ mutex_lock(&adev->srbm_mutex);
+ soc15_grbm_select(adev, ring->me, ring->pipe, ring->queue, 0, 0);
+ tmp = RREG32_SOC15(GC, 0, mmCP_HQD_ACTIVE);
+ /* disable the queue if it's active */
+ if (tmp & CP_HQD_ACTIVE__ACTIVE_MASK) {
+ int j;
+
+ WREG32_SOC15(GC, 0, mmCP_HQD_DEQUEUE_REQUEST, 1);
+ for (j = 0; j < adev->usec_timeout; j++) {
+ tmp = RREG32_SOC15(GC, 0, mmCP_HQD_ACTIVE);
+ if (!(tmp & CP_HQD_ACTIVE__ACTIVE_MASK))
+ break;
+ udelay(1);
+ }
+ if (j == AMDGPU_MAX_USEC_TIMEOUT) {
+ DRM_DEBUG("comp_%u_%u_%u dequeue request failed.\n",
+ ring->me, ring->pipe, ring->queue);
+ /* Manual disable if dequeue request times out */
+ WREG32_SOC15(GC, 0, mmCP_HQD_ACTIVE, 0);
+ }
+ WREG32_SOC15(GC, 0, mmCP_HQD_DEQUEUE_REQUEST, 0);
+ }
+ soc15_grbm_select(adev, 0, 0, 0, 0, 0);
+ mutex_unlock(&adev->srbm_mutex);
+ }
+ amdgpu_gfx_rlc_exit_safe_mode(adev, 0);
+}
+
static int gfx_v9_0_hw_fini(struct amdgpu_ip_block *ip_block)
{
struct amdgpu_device *adev = ip_block->adev;
@@ -4071,6 +4106,10 @@ static int gfx_v9_0_hw_fini(struct amdgp
return 0;
}
+ if ((adev->flags & AMD_IS_APU) && amdgpu_in_reset(adev) &&
+ amdgpu_asic_reset_method(adev) == AMD_RESET_METHOD_MODE2)
+ gfx_v9_0_deactivate_kcq_hqd(adev);
+
/* Use deinitialize sequence from CAIL when unbinding device from driver,
* otherwise KIQ is hanging when binding back
*/
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 336/675] drm/amdgpu: Fix amdgpu_bo_move() when old_mem and new_mem are both GTT
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (334 preceding siblings ...)
2026-07-30 14:11 ` [PATCH 6.18 335/675] drm/amdgpu/gfx9: Fix Ring and IB test fail after mode2 Greg Kroah-Hartman
@ 2026-07-30 14:11 ` Greg Kroah-Hartman
2026-07-30 14:11 ` [PATCH 6.18 337/675] drm/amdgpu: validate CP_GFX_SHADOW chunk size in CS pass1 Greg Kroah-Hartman
` (343 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:11 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Timur Kristóf,
Christian König, Alex Deucher
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Timur Kristóf <timur.kristof@gmail.com>
commit ee94a65f192c05c543b4d3ad7137cd696b5c18fc upstream.
The UVD code relies on GTT to GTT moves in order to ensure
that its BOs don't cross 256M segments.
Fixes: bfe5e585b44f ("drm/ttm: move last binding into the drivers.")
Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 21fd45e5e2628d00b478590bcc3d14d3de5d45b6)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
@@ -505,6 +505,15 @@ static int amdgpu_bo_move(struct ttm_buf
if (new_mem->mem_type == TTM_PL_TT ||
new_mem->mem_type == AMDGPU_PL_PREEMPT) {
+ if (old_mem && (old_mem->mem_type == TTM_PL_TT ||
+ old_mem->mem_type == AMDGPU_PL_PREEMPT)) {
+ r = ttm_bo_wait_ctx(bo, ctx);
+ if (r)
+ return r;
+
+ amdgpu_ttm_backend_unbind(bo->bdev, bo->ttm);
+ }
+
r = amdgpu_ttm_backend_bind(bo->bdev, bo->ttm, new_mem);
if (r)
return r;
@@ -537,6 +546,15 @@ static int amdgpu_bo_move(struct ttm_buf
amdgpu_bo_move_notify(bo, evict, new_mem);
ttm_resource_free(bo, &bo->resource);
ttm_bo_assign_mem(bo, new_mem);
+ return 0;
+ }
+ if ((old_mem->mem_type == TTM_PL_TT ||
+ old_mem->mem_type == AMDGPU_PL_PREEMPT) &&
+ (new_mem->mem_type == TTM_PL_TT ||
+ new_mem->mem_type == AMDGPU_PL_PREEMPT)) {
+ amdgpu_bo_move_notify(bo, evict, new_mem);
+ ttm_resource_free(bo, &bo->resource);
+ ttm_bo_assign_mem(bo, new_mem);
return 0;
}
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 337/675] drm/amdgpu: validate CP_GFX_SHADOW chunk size in CS pass1
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (335 preceding siblings ...)
2026-07-30 14:11 ` [PATCH 6.18 336/675] drm/amdgpu: Fix amdgpu_bo_move() when old_mem and new_mem are both GTT Greg Kroah-Hartman
@ 2026-07-30 14:11 ` Greg Kroah-Hartman
2026-07-30 14:11 ` [PATCH 6.18 338/675] drm/nouveau: fix reversed error cleanup order in ucopy functions Greg Kroah-Hartman
` (342 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:11 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Alex Deucher, Mario Limonciello
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Mario Limonciello <mario.limonciello@amd.com>
commit 84c4c36acd5c4b2558b5069f869a165b2c655c84 upstream.
Add a minimum-length check for the AMDGPU_CHUNK_ID_CP_GFX_SHADOW chunk in
amdgpu_cs_pass1(), matching the gate already present for the IB, FENCE and
BO_HANDLES chunk types.
The CP_GFX_SHADOW case previously shared a bare break with the dependency
and syncobj chunk types, which do not dereference a fixed-size struct. When
userspace submits this chunk with length_dw == 0, vmemdup_array_user() is
called with size 0 and returns ZERO_SIZE_PTR, which passes the IS_ERR()
check. amdgpu_cs_p2_shadow() then dereferences chunk->kdata as a struct
drm_amdgpu_cs_chunk_cp_gfx_shadow (reading shadow->flags), faulting on the
ZERO_SIZE_PTR and causing a NULL-pointer dereference.
This is reachable by an unprivileged process in the render group. Reject
undersized chunks with -EINVAL during pass1 so the bad submission is
rejected before pass2 ever dereferences the data.
Fixes: ac9287055ff1 ("drm/amdgpu: add gfx shadow CS IOCTL support")
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 7f61b2eef7415eccdb40850aca0de94211948657)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
@@ -260,13 +260,17 @@ static int amdgpu_cs_pass1(struct amdgpu
goto free_partial_kdata;
break;
+ case AMDGPU_CHUNK_ID_CP_GFX_SHADOW:
+ if (size < sizeof(struct drm_amdgpu_cs_chunk_cp_gfx_shadow))
+ goto free_partial_kdata;
+ break;
+
case AMDGPU_CHUNK_ID_DEPENDENCIES:
case AMDGPU_CHUNK_ID_SYNCOBJ_IN:
case AMDGPU_CHUNK_ID_SYNCOBJ_OUT:
case AMDGPU_CHUNK_ID_SCHEDULED_DEPENDENCIES:
case AMDGPU_CHUNK_ID_SYNCOBJ_TIMELINE_WAIT:
case AMDGPU_CHUNK_ID_SYNCOBJ_TIMELINE_SIGNAL:
- case AMDGPU_CHUNK_ID_CP_GFX_SHADOW:
break;
default:
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 338/675] drm/nouveau: fix reversed error cleanup order in ucopy functions
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (336 preceding siblings ...)
2026-07-30 14:11 ` [PATCH 6.18 337/675] drm/amdgpu: validate CP_GFX_SHADOW chunk size in CS pass1 Greg Kroah-Hartman
@ 2026-07-30 14:11 ` Greg Kroah-Hartman
2026-07-30 14:11 ` [PATCH 6.18 339/675] drm/sysfb: Avoid possible truncation with calculating visible size Greg Kroah-Hartman
` (341 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:11 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Yuhao Jiang, Junrui Luo,
Danilo Krummrich
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Junrui Luo <moonafterrain@outlook.com>
commit ab99ead646b1b833ecd57fe577a2816f2e848167 upstream.
nouveau_uvmm_vm_bind_ucopy() and nouveau_exec_ucopy() place their error
cleanup labels in allocation order rather than reverse allocation order.
On a u_memcpya() failure for in_sync.s, the goto to err_free_ops (or
err_free_pushs) frees the first allocation and then falls through to
err_free_ins, which calls u_free() on args->in_sync.s.
Since args->in_sync.s still holds the ERR_PTR returned by the failed
u_memcpya(), and ERR_PTR values are not caught by ZERO_OR_NULL_PTR(),
kvfree() proceeds to dereference it, which can result in a kernel oops.
A failure for out_sync.s instead jumps to err_free_ins and skips freeing
the first allocation, leading to a memory leak.
Fix by swapping the cleanup label order so resources are freed in the
correct reverse allocation sequence.
Fixes: b88baab82871 ("drm/nouveau: implement new VM_BIND uAPI")
Reported-by: Yuhao Jiang <danisjiang@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Junrui Luo <moonafterrain@outlook.com>
Link: https://patch.msgid.link/SYBPR01MB7881484D91A6F80271415F71AF1A2@SYBPR01MB7881.ausprd01.prod.outlook.com
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/nouveau/nouveau_exec.c | 4 ++--
drivers/gpu/drm/nouveau/nouveau_uvmm.c | 4 ++--
2 files changed, 4 insertions(+), 4 deletions(-)
--- a/drivers/gpu/drm/nouveau/nouveau_exec.c
+++ b/drivers/gpu/drm/nouveau/nouveau_exec.c
@@ -331,10 +331,10 @@ nouveau_exec_ucopy(struct nouveau_exec_j
return 0;
-err_free_pushs:
- u_free(args->push.s);
err_free_ins:
u_free(args->in_sync.s);
+err_free_pushs:
+ u_free(args->push.s);
return ret;
}
--- a/drivers/gpu/drm/nouveau/nouveau_uvmm.c
+++ b/drivers/gpu/drm/nouveau/nouveau_uvmm.c
@@ -1711,10 +1711,10 @@ nouveau_uvmm_vm_bind_ucopy(struct nouvea
return 0;
-err_free_ops:
- u_free(args->op.s);
err_free_ins:
u_free(args->in_sync.s);
+err_free_ops:
+ u_free(args->op.s);
return ret;
}
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 339/675] drm/sysfb: Avoid possible truncation with calculating visible size
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (337 preceding siblings ...)
2026-07-30 14:11 ` [PATCH 6.18 338/675] drm/nouveau: fix reversed error cleanup order in ucopy functions Greg Kroah-Hartman
@ 2026-07-30 14:11 ` Greg Kroah-Hartman
2026-07-30 14:11 ` [PATCH 6.18 340/675] drm/sysfb: Return errno code from drm_sysfb_get_visible_size() Greg Kroah-Hartman
` (340 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:11 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Thomas Zimmermann, Sashiko,
Javier Martinez Canillas, dri-devel
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Thomas Zimmermann <tzimmermann@suse.de>
commit b771974988ec7ce077a7246fa0fa588c246fe581 upstream.
Calculating the visible size of the system framebuffer can result in
truncation of the result. The calculation uses 32-bit arithmetics,
which can overflow if the values for height and stride are large. Fix
the issue by multiplying with mul_u32_u32().
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Fixes: 32ae90c66fb6 ("drm/sysfb: Add efidrm for EFI displays")
Fixes: a84eb6abe2b6 ("drm/sysfb: Add vesadrm for VESA displays")
Reported-by: Sashiko <sashiko-bot@kernel.org>
Closes: https://lore.kernel.org/dri-devel/20260617114027.1F2A71F000E9@smtp.kernel.org/
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Javier Martinez Canillas <javierm@redhat.com>
Cc: dri-devel@lists.freedesktop.org
Cc: <stable@vger.kernel.org> # v6.16+
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patch.msgid.link/20260618084327.46567-3-tzimmermann@suse.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/sysfb/drm_sysfb_screen_info.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/gpu/drm/sysfb/drm_sysfb_screen_info.c
+++ b/drivers/gpu/drm/sysfb/drm_sysfb_screen_info.c
@@ -2,6 +2,7 @@
#include <linux/export.h>
#include <linux/limits.h>
+#include <linux/math64.h>
#include <linux/minmax.h>
#include <linux/screen_info.h>
@@ -73,7 +74,7 @@ EXPORT_SYMBOL(drm_sysfb_get_stride_si);
u64 drm_sysfb_get_visible_size_si(struct drm_device *dev, const struct screen_info *si,
unsigned int height, unsigned int stride, u64 size)
{
- u64 vsize = height * stride;
+ u64 vsize = mul_u32_u32(height, stride);
return drm_sysfb_get_validated_size0(dev, "visible size", vsize, size);
}
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 340/675] drm/sysfb: Return errno code from drm_sysfb_get_visible_size()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (338 preceding siblings ...)
2026-07-30 14:11 ` [PATCH 6.18 339/675] drm/sysfb: Avoid possible truncation with calculating visible size Greg Kroah-Hartman
@ 2026-07-30 14:11 ` Greg Kroah-Hartman
2026-07-30 14:11 ` [PATCH 6.18 341/675] drm/displayid: fix Tiled Display Topology ID size Greg Kroah-Hartman
` (339 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:11 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Thomas Zimmermann,
Javier Martinez Canillas, dri-devel
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Thomas Zimmermann <tzimmermann@suse.de>
commit 7bab0f09d753f098977bbba3955d694c2e2c25da upstream.
Change the return type of drm_sysfb_get_visible_size() to s64 so
that it returns a possible errno code from _get_validated_size0().
Fix callers to handle the errno code.
The currently returned unsigned type converts an errno code to a
very large size value, which drivers interpret as visible size of
the system framebuffer. Later efforts to reserve the framebuffer
resource fail.
The bug has been present since efidrm and vesadrm got merged. It
was then part of each driver.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Fixes: 32ae90c66fb6 ("drm/sysfb: Add efidrm for EFI displays")
Fixes: a84eb6abe2b6 ("drm/sysfb: Add vesadrm for VESA displays")
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Javier Martinez Canillas <javierm@redhat.com>
Cc: dri-devel@lists.freedesktop.org
Cc: <stable@vger.kernel.org> # v6.16+
Link: https://patch.msgid.link/20260618084327.46567-4-tzimmermann@suse.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/sysfb/drm_sysfb_helper.h | 2 +-
drivers/gpu/drm/sysfb/drm_sysfb_screen_info.c | 2 +-
drivers/gpu/drm/sysfb/efidrm.c | 7 ++++---
drivers/gpu/drm/sysfb/vesadrm.c | 6 +++---
4 files changed, 9 insertions(+), 8 deletions(-)
--- a/drivers/gpu/drm/sysfb/drm_sysfb_helper.h
+++ b/drivers/gpu/drm/sysfb/drm_sysfb_helper.h
@@ -39,7 +39,7 @@ struct resource *drm_sysfb_get_memory_si
int drm_sysfb_get_stride_si(struct drm_device *dev, const struct screen_info *si,
const struct drm_format_info *format,
unsigned int width, unsigned int height, u64 size);
-u64 drm_sysfb_get_visible_size_si(struct drm_device *dev, const struct screen_info *si,
+s64 drm_sysfb_get_visible_size_si(struct drm_device *dev, const struct screen_info *si,
unsigned int height, unsigned int stride, u64 size);
const struct drm_format_info *drm_sysfb_get_format_si(struct drm_device *dev,
const struct drm_sysfb_format *formats,
--- a/drivers/gpu/drm/sysfb/drm_sysfb_screen_info.c
+++ b/drivers/gpu/drm/sysfb/drm_sysfb_screen_info.c
@@ -71,7 +71,7 @@ int drm_sysfb_get_stride_si(struct drm_d
}
EXPORT_SYMBOL(drm_sysfb_get_stride_si);
-u64 drm_sysfb_get_visible_size_si(struct drm_device *dev, const struct screen_info *si,
+s64 drm_sysfb_get_visible_size_si(struct drm_device *dev, const struct screen_info *si,
unsigned int height, unsigned int stride, u64 size)
{
u64 vsize = mul_u32_u32(height, stride);
--- a/drivers/gpu/drm/sysfb/efidrm.c
+++ b/drivers/gpu/drm/sysfb/efidrm.c
@@ -143,7 +143,8 @@ static struct efidrm_device *efidrm_devi
const struct screen_info *si;
const struct drm_format_info *format;
int width, height, stride;
- u64 vsize, mem_flags;
+ s64 vsize;
+ u64 mem_flags;
struct resource resbuf;
struct resource *res;
struct efidrm_device *efi;
@@ -195,8 +196,8 @@ static struct efidrm_device *efidrm_devi
if (stride < 0)
return ERR_PTR(stride);
vsize = drm_sysfb_get_visible_size_si(dev, si, height, stride, resource_size(res));
- if (!vsize)
- return ERR_PTR(-EINVAL);
+ if (vsize < 0)
+ return ERR_PTR(vsize);
drm_dbg(dev, "framebuffer format=%p4cc, size=%dx%d, stride=%d bytes\n",
&format->format, width, height, stride);
--- a/drivers/gpu/drm/sysfb/vesadrm.c
+++ b/drivers/gpu/drm/sysfb/vesadrm.c
@@ -392,7 +392,7 @@ static struct vesadrm_device *vesadrm_de
const struct screen_info *si;
const struct drm_format_info *format;
int width, height, stride;
- u64 vsize;
+ s64 vsize;
struct resource resbuf;
struct resource *res;
struct vesadrm_device *vesa;
@@ -445,8 +445,8 @@ static struct vesadrm_device *vesadrm_de
if (stride < 0)
return ERR_PTR(stride);
vsize = drm_sysfb_get_visible_size_si(dev, si, height, stride, resource_size(res));
- if (!vsize)
- return ERR_PTR(-EINVAL);
+ if (vsize < 0)
+ return ERR_PTR(vsize);
drm_dbg(dev, "framebuffer format=%p4cc, size=%dx%d, stride=%d bytes\n",
&format->format, width, height, stride);
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 341/675] drm/displayid: fix Tiled Display Topology ID size
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (339 preceding siblings ...)
2026-07-30 14:11 ` [PATCH 6.18 340/675] drm/sysfb: Return errno code from drm_sysfb_get_visible_size() Greg Kroah-Hartman
@ 2026-07-30 14:11 ` Greg Kroah-Hartman
2026-07-30 14:11 ` [PATCH 6.18 342/675] drm/i915/gem: Add missing nospec on parallel submit slot Greg Kroah-Hartman
` (338 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:11 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Dave Airlie, Jani Nikula
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jani Nikula <jani.nikula@intel.com>
commit 90c0486a82e27393f9eaf3bb350f51a0bd38cb6b upstream.
The Tiled Display Topology ID of a DisplayID Tiled Display Topology Data
Block consists of three fields:
- Tiled Display Manufacturer/Vendor ID Field (3 bytes)
- Tiled Display Product ID Code Field (2 bytes)
- Tiled Display Serial Number Field (4 bytes)
i.e. a total of 9 bytes, not 8.
The DisplayID Tiled Display Topology ID is used as the tile group
identifier.
Update both struct displayid_tiled_block topology_id member and struct
drm_tile_group group_data member to full 9 bytes.
The group data was missing the last byte of the serial number. I don't
know whether there are known bug reports that might be linked to this,
but it's plausible the last byte could be the differentiating part for
the tile groups, and fewer tile groups might have been created than
intended.
Fixes: b49b55bd4fba ("drm/displayid: add displayid defines and edid extension (v2)")
Fixes: 138f9ebb9755 ("drm: add tile_group support. (v3)")
Cc: Dave Airlie <airlied@redhat.com>
Cc: stable@vger.kernel.org # v3.19+
Reviewed-by: Dave Airlie <airlied@redhat.com>
Link: https://patch.msgid.link/20260610141549.555605-1-jani.nikula@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/drm_connector.c | 12 ++++++------
drivers/gpu/drm/drm_displayid_internal.h | 2 +-
include/drm/drm_connector.h | 6 +++---
3 files changed, 10 insertions(+), 10 deletions(-)
--- a/drivers/gpu/drm/drm_connector.c
+++ b/drivers/gpu/drm/drm_connector.c
@@ -3554,7 +3554,7 @@ EXPORT_SYMBOL(drm_mode_put_tile_group);
/**
* drm_mode_get_tile_group - get a reference to an existing tile group
* @dev: DRM device
- * @topology: 8-bytes unique per monitor.
+ * @topology_id: 9-byte unique ID per monitor.
*
* Use the unique bytes to get a reference to an existing tile group.
*
@@ -3562,14 +3562,14 @@ EXPORT_SYMBOL(drm_mode_put_tile_group);
* tile group or NULL if not found.
*/
struct drm_tile_group *drm_mode_get_tile_group(struct drm_device *dev,
- const char topology[8])
+ const char topology_id[9])
{
struct drm_tile_group *tg;
int id;
mutex_lock(&dev->mode_config.idr_mutex);
idr_for_each_entry(&dev->mode_config.tile_idr, tg, id) {
- if (!memcmp(tg->group_data, topology, 8)) {
+ if (!memcmp(tg->group_data, topology_id, sizeof(tg->group_data))) {
if (!kref_get_unless_zero(&tg->refcount))
tg = NULL;
mutex_unlock(&dev->mode_config.idr_mutex);
@@ -3584,7 +3584,7 @@ EXPORT_SYMBOL(drm_mode_get_tile_group);
/**
* drm_mode_create_tile_group - create a tile group from a displayid description
* @dev: DRM device
- * @topology: 8-bytes unique per monitor.
+ * @topology_id: 9-byte unique ID per monitor.
*
* Create a tile group for the unique monitor, and get a unique
* identifier for the tile group.
@@ -3593,7 +3593,7 @@ EXPORT_SYMBOL(drm_mode_get_tile_group);
* new tile group or NULL.
*/
struct drm_tile_group *drm_mode_create_tile_group(struct drm_device *dev,
- const char topology[8])
+ const char topology_id[9])
{
struct drm_tile_group *tg;
int ret;
@@ -3603,7 +3603,7 @@ struct drm_tile_group *drm_mode_create_t
return NULL;
kref_init(&tg->refcount);
- memcpy(tg->group_data, topology, 8);
+ memcpy(tg->group_data, topology_id, sizeof(tg->group_data));
tg->dev = dev;
mutex_lock(&dev->mode_config.idr_mutex);
--- a/drivers/gpu/drm/drm_displayid_internal.h
+++ b/drivers/gpu/drm/drm_displayid_internal.h
@@ -109,7 +109,7 @@ struct displayid_tiled_block {
u8 topo[3];
u8 tile_size[4];
u8 tile_pixel_bezel[5];
- u8 topology_id[8];
+ u8 topology_id[9];
} __packed;
struct displayid_detailed_timings_1 {
--- a/include/drm/drm_connector.h
+++ b/include/drm/drm_connector.h
@@ -2502,13 +2502,13 @@ struct drm_tile_group {
struct kref refcount;
struct drm_device *dev;
int id;
- u8 group_data[8];
+ u8 group_data[9];
};
struct drm_tile_group *drm_mode_create_tile_group(struct drm_device *dev,
- const char topology[8]);
+ const char topology_id[9]);
struct drm_tile_group *drm_mode_get_tile_group(struct drm_device *dev,
- const char topology[8]);
+ const char topology_id[9]);
void drm_mode_put_tile_group(struct drm_device *dev,
struct drm_tile_group *tg);
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 342/675] drm/i915/gem: Add missing nospec on parallel submit slot
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (340 preceding siblings ...)
2026-07-30 14:11 ` [PATCH 6.18 341/675] drm/displayid: fix Tiled Display Topology ID size Greg Kroah-Hartman
@ 2026-07-30 14:11 ` Greg Kroah-Hartman
2026-07-30 14:11 ` [PATCH 6.18 343/675] drm/nouveau/acr: fix missing nvkm_done() in error path of nvkm_acr_oneinit() Greg Kroah-Hartman
` (337 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:11 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Martin Hodo, Matthew Brost,
Tvrtko Ursulin, Joonas Lahtinen, Tvrtko Ursulin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
commit 914a76a9f08366434bf595700f62026b7a19a9cc upstream.
Add missing Spectre mitigation for userspace controlled parallel
submission slot.
Discovered using AI-assisted static analysis confirmed by Intel
Product Security.
Reported-by: Martin Hodo <martin.hodo@intel.com>
Fixes: e5e32171a2cf ("drm/i915/guc: Connect UAPI to GuC multi-lrc interface")
Cc: Matthew Brost <matthew.brost@intel.com>
Cc: Tvrtko Ursulin <tursulin@ursulin.net>
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@igalia.com>
Cc: <stable@vger.kernel.org> # v5.16+
Link: https://patch.msgid.link/20260622132539.165558-1-joonas.lahtinen@linux.intel.com
(cherry picked from commit 15b9353deff3cf72331c387780de3cf9c316b643)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/i915/gem/i915_gem_context.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/gpu/drm/i915/gem/i915_gem_context.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c
@@ -612,6 +612,7 @@ set_proto_ctx_engines_parallel_submit(st
return -EINVAL;
}
+ slot = array_index_nospec(slot, set->num_engines);
if (set->engines[slot].type != I915_GEM_ENGINE_TYPE_INVALID) {
drm_dbg(&i915->drm,
"Invalid placement[%d], already occupied\n", slot);
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 343/675] drm/nouveau/acr: fix missing nvkm_done() in error path of nvkm_acr_oneinit()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (341 preceding siblings ...)
2026-07-30 14:11 ` [PATCH 6.18 342/675] drm/i915/gem: Add missing nospec on parallel submit slot Greg Kroah-Hartman
@ 2026-07-30 14:11 ` Greg Kroah-Hartman
2026-07-30 14:11 ` [PATCH 6.18 344/675] drm/radeon: fix r100_copy_blit for large BOs Greg Kroah-Hartman
` (336 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:11 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Wentao Liang, Danilo Krummrich
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Wentao Liang <vulab@iscas.ac.cn>
commit c3027973f692077a1b66a9fb26d6a7c46c0dc72c upstream.
In nvkm_acr_oneinit(), nvkm_kmap(acr->wpr) is invoked unconditionally
at line 309 to obtain a mapping reference. Additionally, when both
acr->wpr_fw and acr->wpr_comp are present, a second nvkm_kmap() is
called inside the conditional block. Both mappings are expected to be
released by nvkm_done(acr->wpr) at line 320 before the function returns
successfully.
However, when a mismatch is detected during the loop within the
conditional block, the function returns -EINVAL at line 318 without
calling nvkm_done(). This results in a leak of the kmap reference(s)
acquired earlier.
Fix the issue by invoking nvkm_done(acr->wpr) prior to the early return
to ensure proper release of the mapping references.
Fixes: 22dcda45a3d1 ("drm/nouveau/acr: implement new subdev to replace "secure boot"")
Cc: stable@vger.kernel.org
Signed-off-by: Wentao Liang <vulab@iscas.ac.cn>
Link: https://patch.msgid.link/20260606155606.77593-1-vulab@iscas.ac.cn
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/nouveau/nvkm/subdev/acr/base.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/acr/base.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/acr/base.c
@@ -315,6 +315,7 @@ nvkm_acr_oneinit(struct nvkm_subdev *sub
i, us, fw);
}
}
+ nvkm_done(acr->wpr);
return -EINVAL;
}
nvkm_done(acr->wpr);
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 344/675] drm/radeon: fix r100_copy_blit for large BOs
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (342 preceding siblings ...)
2026-07-30 14:11 ` [PATCH 6.18 343/675] drm/nouveau/acr: fix missing nvkm_done() in error path of nvkm_acr_oneinit() Greg Kroah-Hartman
@ 2026-07-30 14:11 ` Greg Kroah-Hartman
2026-07-30 14:11 ` [PATCH 6.18 345/675] drm/xe: Return error on non-migratable faults requiring devmem Greg Kroah-Hartman
` (335 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:11 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Christian König,
Pavel Ondračka, Alex Deucher
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Pavel Ondračka <pavel.ondracka@gmail.com>
commit f896e86273dbbebb5eac966b4a201b5c62a02e9a upstream.
r100_copy_blit() copies BOs as 1024-pixel-wide ARGB8888 blits, so one
GPU page becomes one blit row. Large copies are split into chunks of at
most 8191 rows.
The kernel register header names the packet coordinate dwords SRC_Y_X
and DST_Y_X. In the BITBLT_MULTI description in
R5xx_Acceleration_v1.5.pdf docs, these correspond to [SRC_X1 | SRC_Y1]
and [DST_X1 | DST_Y1], which are signed 13-bit coordinates in the
-8192..8191 range. The old code kept SRC/DST_PITCH_OFFSET at the BO base
and used SRC_Y_X/DST_Y_X as the chunk address, so large BO moves could
exceed that coordinate range.
Compute per-chunk SRC/DST_PITCH_OFFSET bases and emit zero source and
destination coordinates. r100_copy_blit() already packs
SRC/DST_PITCH_OFFSET as pitch plus base offset, so large chunk addresses
belong there rather than in the coordinate fields.
This fixes Prison Architect corruption with 4096x4096 mipped textures
after they are evicted to GTT under memory pressure on RV530.
Closes: https://gitlab.freedesktop.org/mesa/mesa/-/work_items/6716
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Pavel Ondračka <pavel.ondracka@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 87be26aee76239c6da03e599f238a426897f78ad)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/radeon/r100.c | 13 +++++++++----
1 file changed, 9 insertions(+), 4 deletions(-)
--- a/drivers/gpu/drm/radeon/r100.c
+++ b/drivers/gpu/drm/radeon/r100.c
@@ -906,6 +906,7 @@ struct radeon_fence *r100_copy_blit(stru
{
struct radeon_ring *ring = &rdev->ring[RADEON_RING_TYPE_GFX_INDEX];
struct radeon_fence *fence;
+ uint64_t cur_src_offset, cur_dst_offset;
uint32_t cur_pages;
uint32_t stride_bytes = RADEON_GPU_PAGE_SIZE;
uint32_t pitch;
@@ -934,6 +935,10 @@ struct radeon_fence *r100_copy_blit(stru
cur_pages = 8191;
}
num_gpu_pages -= cur_pages;
+ cur_src_offset = src_offset +
+ (uint64_t)num_gpu_pages * RADEON_GPU_PAGE_SIZE;
+ cur_dst_offset = dst_offset +
+ (uint64_t)num_gpu_pages * RADEON_GPU_PAGE_SIZE;
/* pages are in Y direction - height
page width in X direction - width */
@@ -950,13 +955,13 @@ struct radeon_fence *r100_copy_blit(stru
RADEON_DP_SRC_SOURCE_MEMORY |
RADEON_GMC_CLR_CMP_CNTL_DIS |
RADEON_GMC_WR_MSK_DIS);
- radeon_ring_write(ring, (pitch << 22) | (src_offset >> 10));
- radeon_ring_write(ring, (pitch << 22) | (dst_offset >> 10));
+ radeon_ring_write(ring, (pitch << 22) | (cur_src_offset >> 10));
+ radeon_ring_write(ring, (pitch << 22) | (cur_dst_offset >> 10));
radeon_ring_write(ring, (0x1fff) | (0x1fff << 16));
radeon_ring_write(ring, 0);
radeon_ring_write(ring, (0x1fff) | (0x1fff << 16));
- radeon_ring_write(ring, num_gpu_pages);
- radeon_ring_write(ring, num_gpu_pages);
+ radeon_ring_write(ring, 0);
+ radeon_ring_write(ring, 0);
radeon_ring_write(ring, cur_pages | (stride_pixels << 16));
}
radeon_ring_write(ring, PACKET0(RADEON_DSTCACHE_CTLSTAT, 0));
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 345/675] drm/xe: Return error on non-migratable faults requiring devmem
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (343 preceding siblings ...)
2026-07-30 14:11 ` [PATCH 6.18 344/675] drm/radeon: fix r100_copy_blit for large BOs Greg Kroah-Hartman
@ 2026-07-30 14:11 ` Greg Kroah-Hartman
2026-07-30 14:11 ` [PATCH 6.18 346/675] drm/xe: Fix PTE index in xe_vm_populate_pgtable() for chunked binds Greg Kroah-Hartman
` (334 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:11 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Sashiko, Matthew Brost,
Francois Dugast, Thomas Hellström
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Matthew Brost <matthew.brost@intel.com>
commit 136fb61ba8571076dc5d49350a0e6d002d740b74 upstream.
Non-migratable faults that require devmem incorrectly jump to the 'out'
label, which squashes the error code intended to be returned to the
upper layers. Fix this by returning -EACCES instead.
Reported-by: Sashiko <sashiko-bot@kernel.org>
Fixes: 4208fac3dce5 ("drm/xe: Add more SVM GT stats")
Cc: stable@vger.kernel.org
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Francois Dugast <francois.dugast@intel.com>
Link: https://patch.msgid.link/20260617135101.1245574-1-matthew.brost@intel.com
(cherry picked from commit c4508edb2c723de93717272488ea65b165637eac)
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/xe/xe_svm.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
--- a/drivers/gpu/drm/xe/xe_svm.c
+++ b/drivers/gpu/drm/xe/xe_svm.c
@@ -1074,10 +1074,8 @@ retry:
xe_svm_range_fault_count_stats_incr(gt, range);
- if (ctx.devmem_only && !range->base.pages.flags.migrate_devmem) {
- err = -EACCES;
- goto out;
- }
+ if (ctx.devmem_only && !range->base.pages.flags.migrate_devmem)
+ return -EACCES;
if (xe_svm_range_is_valid(range, tile, ctx.devmem_only)) {
xe_svm_range_valid_fault_count_stats_incr(gt, range);
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 346/675] drm/xe: Fix PTE index in xe_vm_populate_pgtable() for chunked binds
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (344 preceding siblings ...)
2026-07-30 14:11 ` [PATCH 6.18 345/675] drm/xe: Return error on non-migratable faults requiring devmem Greg Kroah-Hartman
@ 2026-07-30 14:11 ` Greg Kroah-Hartman
2026-07-30 14:11 ` [PATCH 6.18 347/675] drm/xe: Hold a dma-buf reference for imported BOs Greg Kroah-Hartman
` (333 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:11 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Matthew Brost, Matthew Auld,
Thomas Hellström
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Matthew Brost <matthew.brost@intel.com>
commit 34a4dd45cf210c04fee773b0dbc350aec285f03c upstream.
xe_vm_populate_pgtable() indexed the source PTE array (update->pt_entries)
by the per-call loop counter, assuming each call starts at the first entry
of the update. That holds for the CPU bind path
(xe_migrate_update_pgtables_cpu), which populates a whole update in a single
call, but not for the GPU bind path: write_pgtable() splits an update into
MAX_PTE_PER_SDI (510) sized MI_STORE_DATA_IMM chunks, invoking the populate
callback once per chunk with an advancing qword_ofs but a fresh command-
buffer destination pointer.
As a result, every chunk after the first re-read pt_entries from index 0
instead of from its true offset, so PTEs beyond the first 510 entries of a
single update were programmed with the wrong physical pages, shifting the
mapping by exactly MAX_PTE_PER_SDI pages.
This stayed latent because a single update only exceeds 510 qwords when a
large (e.g. 2M) region is bound as individual 4K PTEs rather than a single
huge-page entry, which happens when the backing store is sufficiently
fragmented. It was surfaced by the BO defrag path, which deliberately
rebinds such fragmented ranges via the GPU bind path, producing
deterministic data corruption offset by 510 pages.
Index pt_entries by the chunk's absolute offset relative to update->ofs so
both the CPU and GPU paths pick the correct entries.
Fixes: dd08ebf6c352 ("drm/xe: Introduce a new DRM driver for Intel GPUs")
Cc: stable@vger.kernel.org
Assisted-by: GitHub_Copilot:claude-opus-4.8
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patch.msgid.link/20260702012434.3861171-1-matthew.brost@intel.com
(cherry picked from commit e6f2d0b757c4fb577a513c577140109d1d292a9a)
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/xe/xe_pt.c | 14 ++++++++++++--
1 file changed, 12 insertions(+), 2 deletions(-)
--- a/drivers/gpu/drm/xe/xe_pt.c
+++ b/drivers/gpu/drm/xe/xe_pt.c
@@ -999,12 +999,22 @@ xe_vm_populate_pgtable(struct xe_migrate
u64 *ptr = data;
u32 i;
+ /*
+ * @qword_ofs is the absolute entry offset within the page table, while
+ * @ptes is indexed relative to @update->ofs (its first entry). The GPU
+ * path (write_pgtable) splits a single update into MAX_PTE_PER_SDI-sized
+ * chunks, calling this with an advancing @qword_ofs but a fresh @data
+ * pointer per chunk, so translate back into a @ptes index rather than
+ * assuming the chunk starts at ptes[0].
+ */
for (i = 0; i < num_qwords; i++) {
+ u32 idx = qword_ofs - update->ofs + i;
+
if (map)
xe_map_wr(tile_to_xe(tile), map, (qword_ofs + i) *
- sizeof(u64), u64, ptes[i].pte);
+ sizeof(u64), u64, ptes[idx].pte);
else
- ptr[i] = ptes[i].pte;
+ ptr[i] = ptes[idx].pte;
}
}
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 347/675] drm/xe: Hold a dma-buf reference for imported BOs
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (345 preceding siblings ...)
2026-07-30 14:11 ` [PATCH 6.18 346/675] drm/xe: Fix PTE index in xe_vm_populate_pgtable() for chunked binds Greg Kroah-Hartman
@ 2026-07-30 14:11 ` Greg Kroah-Hartman
2026-07-30 14:11 ` [PATCH 6.18 348/675] drm/imagination: Fix double call to drm_sched_entity_fini() Greg Kroah-Hartman
` (332 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:11 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Thomas Hellstrom, Christian Konig,
Matthew Auld, Nitin Gote
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Nitin Gote <nitin.r.gote@intel.com>
commit 62775525a27c3b0d56382e08ba81ee2d322058b6 upstream.
An imported dma-buf BO is created as a ttm_bo_type_sg BO whose
reservation object is the exporter's dma_buf->resv. The importer,
however, only takes a dma-buf reference after a successful
dma_buf_dynamic_attach(). Until then nothing keeps the exporter alive,
so if the exporter is freed while the BO still references its resv, a
later access to that resv is a use-after-free:
Oops: general protection fault, probably for non-canonical address
0x6b6b6b6b6b6b6b9c
Workqueue: ttm ttm_bo_delayed_delete [ttm]
RIP: 0010:mutex_can_spin_on_owner+0x3f/0xc0
This can be reached on two paths:
- dma_buf_dynamic_attach() fails, or
- ttm_bo_init_reserved() fails during BO creation.
In both cases the BO already has bo->base.resv pointing at the exporter
resv, and sg BOs are always torn down via ttm_bo_delayed_delete(), which
locks bo->base.resv asynchronously - potentially after the exporter has
been freed.
Take the dma-buf reference in xe_bo_init_locked(), before
ttm_bo_init_reserved(), so it also covers a creation failure there, and
release it in xe_ttm_bo_destroy(). The reference is held for the whole
BO lifetime, keeping the shared resv alive on every path.
v2:
- Reworked the fix to avoid creating the imported sg BO before
dma_buf_dynamic_attach() succeeds.
- Attach with importer_priv == NULL and make invalidate_mappings ignore
incomplete imports.
v3:
- Dropped the xe-side reordering approach since importer_priv must be
valid when dma_buf_dynamic_attach() publishes the attachment.
- Per Christian's suggestion on the v1 thread, keyed the check on
import_attach rather than removing the sg guard entirely.
- Fixes both xe and amdgpu in a single TTM patch.
v4:
- Moved import_attach check to after dma_resv_copy_fences() so fences
are copied before returning for successful imports (Thomas).
- Removed exporter-alive claim from commit message (Thomas).
v5:
- Add drm/xe patch to keep imported sg BOs off the LRU before attach
succeeds; the TTM fix alone is not sufficient for xe if the BO is
already LRU-visible. (Thomas)
v4 patch:
https://patchwork.freedesktop.org/patch/736663/?series=169129&rev=2
- Patch 1 (drm/ttm) carries Christian's Reviewed-by from v4.
v6:
- Reworked the fix based on Thomas' suggestion. Instead of the TTM resv
individualization (v1-v5) plus the xe off-LRU/placement handling (v5),
just hold a dma-buf reference for the imported BO lifetime so the
shared resv can never be freed while the BO still references it.
Single xe patch, no TTM change. (Thomas)
- Take the reference in xe_bo_init_locked() before ttm_bo_init_reserved()
so a TTM creation failure is covered too (Thomas).
- Dropped the v5 series (drm/ttm + drm/xe off-LRU); the off-LRU approach
also regressed in CI BAT via ttm_bo_pipeline_gutting() creating a ghost
BO that outlived the exporter.
Link to v5: https://patchwork.freedesktop.org/series/169984/
v7:
- Move changelog above --- so it stays in the commit message.
- Reorder changelog entries oldest-to-newest. (Thomas)
Closes: https://gitlab.freedesktop.org/drm/xe/kernel/-/work_items/8023
Fixes: dd08ebf6c352 ("drm/xe: Introduce a new DRM driver for Intel GPUs")
Cc: stable@vger.kernel.org
Cc: Thomas Hellstrom <thomas.hellstrom@linux.intel.com>
Cc: Christian Konig <christian.koenig@amd.com>
Cc: Matthew Auld <matthew.auld@intel.com>
Suggested-by: Thomas Hellstrom <thomas.hellstrom@linux.intel.com>
Assisted-by: GitHub_Copilot:claude-sonnet-4.6
Reviewed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Signed-off-by: Nitin Gote <nitin.r.gote@intel.com>
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patch.msgid.link/20260710191027.260160-2-nitin.r.gote@intel.com
(cherry picked from commit 3516f3fae6be35642f8f06f8a218da6425c0306a)
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/xe/xe_bo.c | 24 ++++++++++++++++++++----
drivers/gpu/drm/xe/xe_bo.h | 3 ++-
drivers/gpu/drm/xe/xe_bo_types.h | 2 ++
drivers/gpu/drm/xe/xe_dma_buf.c | 2 +-
4 files changed, 25 insertions(+), 6 deletions(-)
--- a/drivers/gpu/drm/xe/xe_bo.c
+++ b/drivers/gpu/drm/xe/xe_bo.c
@@ -1186,7 +1186,7 @@ int xe_bo_notifier_prepare_pinned(struct
backup = xe_bo_init_locked(xe, NULL, NULL, bo->ttm.base.resv, NULL, xe_bo_size(bo),
DRM_XE_GEM_CPU_CACHING_WB, ttm_bo_type_kernel,
XE_BO_FLAG_SYSTEM | XE_BO_FLAG_NEEDS_CPU_ACCESS |
- XE_BO_FLAG_PINNED, &exec);
+ XE_BO_FLAG_PINNED, NULL, &exec);
if (IS_ERR(backup)) {
drm_exec_retry_on_contention(&exec);
ret = PTR_ERR(backup);
@@ -1327,7 +1327,7 @@ int xe_bo_evict_pinned(struct xe_bo *bo)
xe_bo_size(bo),
DRM_XE_GEM_CPU_CACHING_WB, ttm_bo_type_kernel,
XE_BO_FLAG_SYSTEM | XE_BO_FLAG_NEEDS_CPU_ACCESS |
- XE_BO_FLAG_PINNED, &exec);
+ XE_BO_FLAG_PINNED, NULL, &exec);
if (IS_ERR(backup)) {
drm_exec_retry_on_contention(&exec);
ret = PTR_ERR(backup);
@@ -1675,6 +1675,8 @@ static void xe_ttm_bo_destroy(struct ttm
if (bo->ttm.base.import_attach)
drm_prime_gem_destroy(&bo->ttm.base, NULL);
+ if (bo->dma_buf)
+ dma_buf_put(bo->dma_buf);
drm_gem_object_release(&bo->ttm.base);
xe_assert(xe, list_empty(&ttm_bo->base.gpuva.list));
@@ -2092,6 +2094,8 @@ void xe_bo_free(struct xe_bo *bo)
* @cpu_caching: The cpu caching used for system memory backing store.
* @type: The TTM buffer object type.
* @flags: XE_BO_FLAG_ flags.
+ * @dma_buf: The dma-buf to reference for the BO lifetime (imported BOs),
+ * or NULL.
* @exec: The drm_exec transaction to use for exhaustive eviction.
*
* Initialize or create an xe buffer object. On failure, any allocated buffer
@@ -2103,7 +2107,8 @@ struct xe_bo *xe_bo_init_locked(struct x
struct xe_tile *tile, struct dma_resv *resv,
struct ttm_lru_bulk_move *bulk, size_t size,
u16 cpu_caching, enum ttm_bo_type type,
- u32 flags, struct drm_exec *exec)
+ u32 flags, struct dma_buf *dma_buf,
+ struct drm_exec *exec)
{
struct ttm_operation_ctx ctx = {
.interruptible = true,
@@ -2189,6 +2194,17 @@ struct xe_bo *xe_bo_init_locked(struct x
placement = (type == ttm_bo_type_sg ||
bo->flags & XE_BO_FLAG_DEFER_BACKING) ? &sys_placement :
&bo->placement;
+
+ /*
+ * For imported BOs, keep the exporter dma-buf alive for the BO
+ * lifetime. Taken before ttm_bo_init_reserved() to also cover a
+ * creation failure there. Released in xe_ttm_bo_destroy().
+ */
+ if (dma_buf) {
+ get_dma_buf(dma_buf);
+ bo->dma_buf = dma_buf;
+ }
+
err = ttm_bo_init_reserved(&xe->ttm, &bo->ttm, type,
placement, alignment,
&ctx, NULL, resv, xe_ttm_bo_destroy);
@@ -2303,7 +2319,7 @@ __xe_bo_create_locked(struct xe_device *
vm && !xe_vm_in_fault_mode(vm) &&
flags & XE_BO_FLAG_USER ?
&vm->lru_bulk_move : NULL, size,
- cpu_caching, type, flags, exec);
+ cpu_caching, type, flags, NULL, exec);
if (IS_ERR(bo))
return bo;
--- a/drivers/gpu/drm/xe/xe_bo.h
+++ b/drivers/gpu/drm/xe/xe_bo.h
@@ -93,7 +93,8 @@ struct xe_bo *xe_bo_init_locked(struct x
struct xe_tile *tile, struct dma_resv *resv,
struct ttm_lru_bulk_move *bulk, size_t size,
u16 cpu_caching, enum ttm_bo_type type,
- u32 flags, struct drm_exec *exec);
+ u32 flags, struct dma_buf *dma_buf,
+ struct drm_exec *exec);
struct xe_bo *xe_bo_create_locked(struct xe_device *xe, struct xe_tile *tile,
struct xe_vm *vm, size_t size,
enum ttm_bo_type type, u32 flags,
--- a/drivers/gpu/drm/xe/xe_bo_types.h
+++ b/drivers/gpu/drm/xe/xe_bo_types.h
@@ -35,6 +35,8 @@ struct xe_bo {
struct xe_bo *backup_obj;
/** @parent_obj: Ref to parent bo if this a backup_obj */
struct xe_bo *parent_obj;
+ /** @dma_buf: Imported dma-buf ref to keep its resv alive. */
+ struct dma_buf *dma_buf;
/** @flags: flags for this buffer object */
u32 flags;
/** @vm: VM this BO is attached to, for extobj this will be NULL */
--- a/drivers/gpu/drm/xe/xe_dma_buf.c
+++ b/drivers/gpu/drm/xe/xe_dma_buf.c
@@ -251,7 +251,7 @@ xe_dma_buf_create_obj(struct drm_device
bo = xe_bo_init_locked(xe, NULL, NULL, resv, NULL, dma_buf->size,
0, /* Will require 1way or 2way for vm_bind */
- ttm_bo_type_sg, XE_BO_FLAG_SYSTEM, &exec);
+ ttm_bo_type_sg, XE_BO_FLAG_SYSTEM, dma_buf, &exec);
drm_exec_retry_on_contention(&exec);
if (IS_ERR(bo)) {
ret = PTR_ERR(bo);
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 348/675] drm/imagination: Fix double call to drm_sched_entity_fini()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (346 preceding siblings ...)
2026-07-30 14:11 ` [PATCH 6.18 347/675] drm/xe: Hold a dma-buf reference for imported BOs Greg Kroah-Hartman
@ 2026-07-30 14:11 ` Greg Kroah-Hartman
2026-07-30 14:11 ` [PATCH 6.18 349/675] drm/imagination: Fix user array stride in pvr_set_uobj_array() Greg Kroah-Hartman
` (331 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:11 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Brajesh Gupta, Alessio Belle
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Brajesh Gupta <brajesh.gupta@imgtec.com>
commit 4af24c27a39ba147a613a09e10b9e0f7294524c0 upstream.
Call sequence of double call:
pvr_context_destroy
pvr_context_kill_queues
pvr_queue_kill
drm_sched_entity_destroy
drm_sched_entity_fini // here
pvr_context_put
kref_put(..., pvr_context_release)
pvr_context_destroy_queues
pvr_queue_destroy
drm_sched_entity_fini // here
Call to drm_sched_entity_destroy() from pvr_context_kill_queues() calls
drm_sched_entity_flush() + drm_sched_entity_fini().
drm_sched_entity_flush() ensures all pending jobs are completed and
drm_sched_entity_fini() ensures no further submission is allowed as
per expectation from pvr_context_kill_queues(). Double call to
drm_sched_entity_fini() is misuse of the API so keep call only in
pvr_context_create() failure path.
Stack trace for issue with addition of refcounting for DRM entity
stats in commit fd177135f0e6 ("drm/sched: Account entity GPU time"):
[ 789.490527] ------------[ cut here ]------------
[ 789.490559] refcount_t: underflow; use-after-free.
[ 789.490657] WARNING: lib/refcount.c:28 at refcount_warn_saturate+0xf4/0x144, CPU#0: kworker/u16:1/440
[ 789.490695] Modules linked in: powervr drm_gpuvm drm_exec gpu_sched drm_shmem_helper xhci_plat_hcd xhci_hcd dwc3 usbcore usb_common snd_soc_simple_card snd_soc_simple_card_utils sa2ul sha512 sha256 dwc3_am62 sha1 authenc rti_wdt libsha512 at24 sch_fq_codel fuse dm_mod ipv6
[ 789.490798] CPU: 0 UID: 0 PID: 440 Comm: kworker/u16:1 Not tainted 7.0.0-rc7-02049-g5e2c0700091b #22 PREEMPT
[ 789.490809] Hardware name: Texas Instruments AM625 SK (DT)
[ 789.490815] Workqueue: powervr-sched pvr_queue_fence_release_work [powervr]
[ 789.490868] pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
[ 789.490876] pc : refcount_warn_saturate+0xf4/0x144
[ 789.490884] lr : refcount_warn_saturate+0xf4/0x144
[ 789.490892] sp : ffff8000822cbcc0
[ 789.490895] x29: ffff8000822cbcc0 x28: 0000000000000000 x27: 0000000000000000
[ 789.490909] x26: 0000000000000000 x25: ffff800081b1e338 x24: ffff000004541405
[ 789.490922] x23: ffff000004bea950 x22: ffff00000042e400 x21: ffff000007123e30
[ 789.490935] x20: ffff000007123000 x19: ffff000007a80d50 x18: fffffffffffe7768
[ 789.490948] x17: 74736574202c6e6f x16: 697461746e656d65 x15: ffff800081b269f0
[ 789.490962] x14: 0000000000000030 x13: ffff800081b26a70 x12: 0000000000000211
[ 789.490975] x11: 00000000000000c0 x10: 0000000000000b50 x9 : ffff8000822cbb30
[ 789.490988] x8 : ffff0000014e7bb0 x7 : ffff00007725e780 x6 : 0000000372a05f49
[ 789.491001] x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000010
[ 789.491013] x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff0000014e7000
[ 789.491027] Call trace:
[ 789.491032] refcount_warn_saturate+0xf4/0x144 (P)
[ 789.491043] drm_sched_entity_fini+0x164/0x18c [gpu_sched]
[ 789.491081] pvr_queue_destroy+0x64/0x134 [powervr]
[ 789.491110] pvr_context_destroy_queues+0x34/0x64 [powervr]
[ 789.491138] pvr_context_release+0x70/0xac [powervr]
[ 789.491166] pvr_context_put.part.0+0x5c/0x7c [powervr]
[ 789.491193] pvr_context_put+0x14/0x24 [powervr]
[ 789.491221] pvr_queue_fence_release_work+0x20/0x38 [powervr]
[ 789.491249] process_one_work+0x160/0x4c4
[ 789.491264] worker_thread+0x188/0x310
[ 789.491276] kthread+0x130/0x13c
[ 789.491287] ret_from_fork+0x10/0x20
[ 789.491300] ---[ end trace 0000000000000000 ]---
Fixes: eaf01ee5ba28 ("drm/imagination: Implement job submission and scheduling")
Cc: stable@vger.kernel.org
Signed-off-by: Brajesh Gupta <brajesh.gupta@imgtec.com>
Reviewed-by: Alessio Belle <alessio.belle@imgtec.com>
Link: https://patch.msgid.link/20260630-b4-sched_fix-v7-1-71aa39c62627@imgtec.com
Signed-off-by: Alessio Belle <alessio.belle@imgtec.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/imagination/pvr_context.c | 18 ++++++++++--------
drivers/gpu/drm/imagination/pvr_queue.c | 6 ++++--
drivers/gpu/drm/imagination/pvr_queue.h | 2 +-
3 files changed, 15 insertions(+), 11 deletions(-)
--- a/drivers/gpu/drm/imagination/pvr_context.c
+++ b/drivers/gpu/drm/imagination/pvr_context.c
@@ -161,22 +161,24 @@ ctx_fw_data_init(void *cpu_ptr, void *pr
/**
* pvr_context_destroy_queues() - Destroy all queues attached to a context.
* @ctx: Context to destroy queues on.
+ * @cleanup_queue_entity: Whether to cleanup the queue entity e.g. context
+ * creation failure path.
*
* Should be called when the last reference to a context object is dropped.
* It releases all resources attached to the queues bound to this context.
*/
-static void pvr_context_destroy_queues(struct pvr_context *ctx)
+static void pvr_context_destroy_queues(struct pvr_context *ctx, bool cleanup_queue_entity)
{
switch (ctx->type) {
case DRM_PVR_CTX_TYPE_RENDER:
- pvr_queue_destroy(ctx->queues.fragment);
- pvr_queue_destroy(ctx->queues.geometry);
+ pvr_queue_destroy(ctx->queues.fragment, cleanup_queue_entity);
+ pvr_queue_destroy(ctx->queues.geometry, cleanup_queue_entity);
break;
case DRM_PVR_CTX_TYPE_COMPUTE:
- pvr_queue_destroy(ctx->queues.compute);
+ pvr_queue_destroy(ctx->queues.compute, cleanup_queue_entity);
break;
case DRM_PVR_CTX_TYPE_TRANSFER_FRAG:
- pvr_queue_destroy(ctx->queues.transfer);
+ pvr_queue_destroy(ctx->queues.transfer, cleanup_queue_entity);
break;
}
}
@@ -240,7 +242,7 @@ static int pvr_context_create_queues(str
return -EINVAL;
err_destroy_queues:
- pvr_context_destroy_queues(ctx);
+ pvr_context_destroy_queues(ctx, true);
return err;
}
@@ -356,7 +358,7 @@ err_destroy_fw_obj:
pvr_fw_object_destroy(ctx->fw_obj);
err_destroy_queues:
- pvr_context_destroy_queues(ctx);
+ pvr_context_destroy_queues(ctx, true);
err_free_ctx_data:
kfree(ctx->data);
@@ -382,7 +384,7 @@ pvr_context_release(struct kref *ref_cou
spin_unlock(&pvr_dev->ctx_list_lock);
xa_erase(&pvr_dev->ctx_ids, ctx->ctx_id);
- pvr_context_destroy_queues(ctx);
+ pvr_context_destroy_queues(ctx, false);
pvr_fw_object_destroy(ctx->fw_obj);
kfree(ctx->data);
pvr_vm_context_put(ctx->vm_ctx);
--- a/drivers/gpu/drm/imagination/pvr_queue.c
+++ b/drivers/gpu/drm/imagination/pvr_queue.c
@@ -1401,11 +1401,12 @@ void pvr_queue_kill(struct pvr_queue *qu
/**
* pvr_queue_destroy() - Destroy a queue.
* @queue: The queue to destroy.
+ * @cleanup_queue_entity: Whether to cleanup the queue entity.
*
* Cleanup the queue and free the resources attached to it. Should be
* called from the context release function.
*/
-void pvr_queue_destroy(struct pvr_queue *queue)
+void pvr_queue_destroy(struct pvr_queue *queue, bool cleanup_queue_entity)
{
if (!queue)
return;
@@ -1415,7 +1416,8 @@ void pvr_queue_destroy(struct pvr_queue
mutex_unlock(&queue->ctx->pvr_dev->queues.lock);
drm_sched_fini(&queue->scheduler);
- drm_sched_entity_fini(&queue->entity);
+ if (cleanup_queue_entity)
+ drm_sched_entity_fini(&queue->entity);
if (WARN_ON(queue->last_queued_job_scheduled_fence))
dma_fence_put(queue->last_queued_job_scheduled_fence);
--- a/drivers/gpu/drm/imagination/pvr_queue.h
+++ b/drivers/gpu/drm/imagination/pvr_queue.h
@@ -158,7 +158,7 @@ struct pvr_queue *pvr_queue_create(struc
void pvr_queue_kill(struct pvr_queue *queue);
-void pvr_queue_destroy(struct pvr_queue *queue);
+void pvr_queue_destroy(struct pvr_queue *queue, bool cleanup_queue_entity);
void pvr_queue_process(struct pvr_queue *queue);
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 349/675] drm/imagination: Fix user array stride in pvr_set_uobj_array()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (347 preceding siblings ...)
2026-07-30 14:11 ` [PATCH 6.18 348/675] drm/imagination: Fix double call to drm_sched_entity_fini() Greg Kroah-Hartman
@ 2026-07-30 14:11 ` Greg Kroah-Hartman
2026-07-30 14:11 ` [PATCH 6.18 350/675] drm/imagination: fix error checking of pvr_vm_context_lookup() Greg Kroah-Hartman
` (330 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:11 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Alessio Belle, Shuvam Pandey
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Shuvam Pandey <shuvampandey1@gmail.com>
commit 8dc8f3f4c2382fb7d1b1986ba8f33a2466cd3d7a upstream.
pvr_set_uobj_array() copies an array of kernel objects to a userspace
array whose element size is described by out->stride. When out->stride
is different from the kernel object size, the slow path advances the
userspace pointer by the kernel object size and the kernel pointer by the
userspace stride.
This reverses the intended layout. For larger userspace strides, later
copies read from the wrong kernel addresses. For smaller userspace
strides, later copies are written at the wrong userspace offsets. The
padding clear is also done only for the first element instead of the
padding area for each element.
Advance the userspace pointer by out->stride and the kernel pointer by
obj_size, and clear per-element padding while the current userspace
pointer is still available.
Fixes: f99f5f3ea7ef ("drm/imagination: Add GPU ID parsing and firmware loading")
Cc: stable@vger.kernel.org # v6.8+
Reviewed-by: Alessio Belle <alessio.belle@imgtec.com>
Signed-off-by: Shuvam Pandey <shuvampandey1@gmail.com>
Link: https://patch.msgid.link/6a456012.eb165e5c.113c2a.b71d@mx.google.com
Signed-off-by: Alessio Belle <alessio.belle@imgtec.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/imagination/pvr_drv.c | 13 ++++++-------
1 file changed, 6 insertions(+), 7 deletions(-)
--- a/drivers/gpu/drm/imagination/pvr_drv.c
+++ b/drivers/gpu/drm/imagination/pvr_drv.c
@@ -1252,14 +1252,13 @@ pvr_set_uobj_array(const struct drm_pvr_
if (copy_to_user(out_ptr, in_ptr, cpy_elem_size))
return -EFAULT;
- out_ptr += obj_size;
- in_ptr += out->stride;
- }
+ if (out->stride > obj_size &&
+ clear_user(out_ptr + cpy_elem_size, out->stride - obj_size)) {
+ return -EFAULT;
+ }
- if (out->stride > obj_size &&
- clear_user(u64_to_user_ptr(out->array + obj_size),
- out->stride - obj_size)) {
- return -EFAULT;
+ out_ptr += out->stride;
+ in_ptr += obj_size;
}
}
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 350/675] drm/imagination: fix error checking of pvr_vm_context_lookup()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (348 preceding siblings ...)
2026-07-30 14:11 ` [PATCH 6.18 349/675] drm/imagination: Fix user array stride in pvr_set_uobj_array() Greg Kroah-Hartman
@ 2026-07-30 14:11 ` Greg Kroah-Hartman
2026-07-30 14:11 ` [PATCH 6.18 351/675] drm/imagination: acquire vm_ctx->lock before mapping memory to GPU VM Greg Kroah-Hartman
` (329 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:11 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Luigi Santivetti, Alessio Belle
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Luigi Santivetti <luigi.santivetti@imgtec.com>
commit cf385cf6e713eba0720651174dac0b2d2f5bb8f8 upstream.
Since pvr_vm_context_lookup() returns either NULL or a pointer, then stop
using IS_ERR() for checking the return value.
Using IS_ERR() leads to the kernel oops reported below. It can be
reproduced by passing an invalid VM context handle from userspace to the
DRM_IOCTL_PVR_CREATE_CONTEXT ioctl.
[ 92.733119] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000148
[ 92.742042] Mem abort info:
[ 92.744890] ESR = 0x0000000096000004
[ 92.748686] EC = 0x25: DABT (current EL), IL = 32 bits
[ 92.754020] SET = 0, FnV = 0
[ 92.757154] EA = 0, S1PTW = 0
[ 92.760337] FSC = 0x04: level 0 translation fault
[ 92.765243] Data abort info:
[ 92.768129] ISV = 0, ISS = 0x00000004, ISS2 = 0x00000000
[ 92.773626] CM = 0, WnR = 0, TnD = 0, TagAccess = 0
[ 92.778763] GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0
[ 92.784098] user pgtable: 4k pages, 48-bit VAs, pgdp=000000088ed23000
[ 92.790550] [0000000000000148] pgd=0000000000000000, p4d=0000000000000000
[ 92.797381] Internal error: Oops: 0000000096000004 [#1] SMP
[ 92.803027] Modules linked in: powervr
[ 92.852533] CPU: 0 UID: 0 PID: 409 Comm: triangle Not tainted 7.1.0-rc5-g98b46e693b91 #1 PREEMPT
[ 92.861385] Hardware name: Texas Instruments AM68 SK (DT)
[ 92.866766] pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
[ 92.873709] pc : pvr_vm_get_fw_mem_context+0x0/0xc [powervr]
[ 92.879376] lr : pvr_queue_create+0x26c/0x440 [powervr]
[ 92.884595] sp : ffff8000837fbb00
[ 92.887895] x29: ffff8000837fbb60 x28: 0000000000000000 x27: ffff8000837fbce8
[ 92.895015] x26: ffff000807f61a40 x25: ffff000807f61a00 x24: ffff000807f64400
[ 92.902135] x23: ffff00080a5ab000 x22: ffff800079b24730 x21: ffff000807f61800
[ 92.909254] x20: ffff00080999e680 x19: 0000000000000000 x18: 0000000000000000
[ 92.916373] x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000001
[ 92.923492] x14: 0000000000000000 x13: 0000000000000002 x12: ffff80008145b298
[ 92.930611] x11: ffff8000844e5000 x10: ffff80008165a130 x9 : 0000000000000100
[ 92.937730] x8 : 0000000000000001 x7 : ffff0008076b27e0 x6 : ffff00080ec43b7c
[ 92.944850] x5 : ffff00080ec43b78 x4 : 0000000000000000 x3 : ffff00080999e680
[ 92.951968] x2 : 0000000000000000 x1 : 0000000000000000 x0 : 0000000000000000
[ 92.959088] Call trace:
[ 92.961521] pvr_vm_get_fw_mem_context+0x0/0xc [powervr] (P)
[ 92.967173] pvr_context_create+0x190/0x410 [powervr]
[ 92.972218] pvr_ioctl_create_context+0x44/0x8c [powervr]
[ 92.977608] drm_ioctl_kernel+0xbc/0x124 [drm]
[ 92.982127] drm_ioctl+0x1f8/0x4dc [drm]
[ 92.986098] __arm64_sys_ioctl+0xac/0x104
[ 92.990102] invoke_syscall+0x54/0x10c
[ 92.993842] el0_svc_common.constprop.0+0x40/0xe0
[ 92.998532] do_el0_svc+0x1c/0x28
[ 93.001835] el0_svc+0x38/0x11c
[ 93.004969] el0t_64_sync_handler+0xa0/0xe4
[ 93.009139] el0t_64_sync+0x198/0x19c
[ 93.012792] Code: aa1703e0 d2800014 95cb0ba4 17ffffe8 (f940a400)
[ 93.018869] ---[ end trace 0000000000000000 ]---
Fixes: d2d79d29bb98 ("drm/imagination: Implement context creation/destruction ioctls")
Cc: stable@vger.kernel.org
Signed-off-by: Luigi Santivetti <luigi.santivetti@imgtec.com>
Reviewed-by: Alessio Belle <alessio.belle@imgtec.com>
Link: https://patch.msgid.link/20260707-staging-ddkopsrc-2435-v1-1-24e160d44476@imgtec.com
Signed-off-by: Alessio Belle <alessio.belle@imgtec.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/imagination/pvr_context.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/gpu/drm/imagination/pvr_context.c
+++ b/drivers/gpu/drm/imagination/pvr_context.c
@@ -309,8 +309,8 @@ int pvr_context_create(struct pvr_file *
goto err_free_ctx;
ctx->vm_ctx = pvr_vm_context_lookup(pvr_file, args->vm_context_handle);
- if (IS_ERR(ctx->vm_ctx)) {
- err = PTR_ERR(ctx->vm_ctx);
+ if (!ctx->vm_ctx) {
+ err = -EINVAL;
goto err_free_ctx;
}
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 351/675] drm/imagination: acquire vm_ctx->lock before mapping memory to GPU VM
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (349 preceding siblings ...)
2026-07-30 14:11 ` [PATCH 6.18 350/675] drm/imagination: fix error checking of pvr_vm_context_lookup() Greg Kroah-Hartman
@ 2026-07-30 14:11 ` Greg Kroah-Hartman
2026-07-30 14:11 ` [PATCH 6.18 352/675] drm/amdkfd: Use kvcalloc to allocate arrays Greg Kroah-Hartman
` (328 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:11 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Icenowy Zheng, Alessio Belle
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Icenowy Zheng <zhengxingda@iscas.ac.cn>
commit 17e2030f37600994440f875dc410615d5c66ee6d upstream.
The drm gpuvm code doesn't protect find operation against map operation,
and the driver needs to ensure a map operation shouldn't happen when a
find operation is in progress.
In some cases a find operation will be in progress when doing map/unmap
operations, and the find operation will do a NULL pointer dereference.
An example of the stack trace of such NULL dereference is shown below:
```
Unable to handle kernel access to user memory without uaccess routines at
virtual address 0000000000000010
[<ffffffff01e989d4>] drm_gpuva_find+0x28/0x6c [drm_gpuvm]
[<ffffffff01ed3a40>] pvr_vm_unmap+0x34/0x68 [powervr]
[<ffffffff01ec69da>] pvr_ioctl_vm_unmap+0x2e/0x50 [powervr]
[<ffffffff8080ce0a>] drm_ioctl_kernel+0x8e/0xdc
[<ffffffff8080d016>] drm_ioctl+0x1be/0x3e0
[<ffffffff802bec3e>] __riscv_sys_ioctl+0xba/0xc4
[<ffffffff80d858b2>] do_trap_ecall_u+0x23e/0x3f4
[<ffffffff80d92288>] handle_exception+0x168/0x174
```
As all occurences of drm_gpuva_find*() are already guarded by
vm_ctx->lock, make pvr_vm_map() to acquire this lock to prevent
disturbing any find operation. This fixes the NULL deference problem in
drm_gpuva_find*().
Cc: stable@vger.kernel.org
Fixes: ff5f643de0bf ("drm/imagination: Add GEM and VM related code")
Fixes: 4bc736f890ce ("drm/imagination: vm: make use of GPUVM's drm_exec helper")
Signed-off-by: Icenowy Zheng <zhengxingda@iscas.ac.cn>
Reviewed-by: Alessio Belle <alessio.belle@imgtec.com>
Link: https://patch.msgid.link/20260714073641.1935075-1-zhengxingda@iscas.ac.cn
Signed-off-by: Alessio Belle <alessio.belle@imgtec.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/imagination/pvr_vm.c | 2 ++
1 file changed, 2 insertions(+)
--- a/drivers/gpu/drm/imagination/pvr_vm.c
+++ b/drivers/gpu/drm/imagination/pvr_vm.c
@@ -746,6 +746,7 @@ pvr_vm_map(struct pvr_vm_context *vm_ctx
pvr_gem_object_get(pvr_obj);
+ mutex_lock(&vm_ctx->lock);
err = drm_gpuvm_exec_lock(&vm_exec);
if (err)
goto err_cleanup;
@@ -755,6 +756,7 @@ pvr_vm_map(struct pvr_vm_context *vm_ctx
drm_gpuvm_exec_unlock(&vm_exec);
err_cleanup:
+ mutex_unlock(&vm_ctx->lock);
pvr_vm_bind_op_fini(&bind_op);
return err;
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 352/675] drm/amdkfd: Use kvcalloc to allocate arrays
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (350 preceding siblings ...)
2026-07-30 14:11 ` [PATCH 6.18 351/675] drm/imagination: acquire vm_ctx->lock before mapping memory to GPU VM Greg Kroah-Hartman
@ 2026-07-30 14:11 ` Greg Kroah-Hartman
2026-07-30 14:11 ` [PATCH 6.18 353/675] drm/amdkfd: Check bounds in allocate_event_notification_slot Greg Kroah-Hartman
` (327 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:11 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, David Francis, Alex Deucher
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: David Francis <David.Francis@amd.com>
commit 9c8b85f95c1d4736b967e17b8eb4a463c055bea3 upstream.
There were a few instances in kfd_chardev.c of kvzalloc being
used to allocate memory for an array.
Switch those to kvcalloc, which
- is the standard way of allocating a zero-initialized array
- does a check for the mul overflowing
Signed-off-by: David Francis <David.Francis@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 60b048c93f7a3add39757ad65fe2bb6e58eeae23)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/amdkfd/kfd_chardev.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
--- a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
@@ -1790,13 +1790,13 @@ static int criu_checkpoint_devices(struc
struct kfd_criu_device_bucket *device_buckets = NULL;
int ret = 0, i;
- device_buckets = kvzalloc(num_devices * sizeof(*device_buckets), GFP_KERNEL);
+ device_buckets = kvcalloc(num_devices, sizeof(*device_buckets), GFP_KERNEL);
if (!device_buckets) {
ret = -ENOMEM;
goto exit;
}
- device_priv = kvzalloc(num_devices * sizeof(*device_priv), GFP_KERNEL);
+ device_priv = kvcalloc(num_devices, sizeof(*device_priv), GFP_KERNEL);
if (!device_priv) {
ret = -ENOMEM;
goto exit;
@@ -1916,17 +1916,17 @@ static int criu_checkpoint_bos(struct kf
int ret = 0, pdd_index, bo_index = 0, id;
void *mem;
- bo_buckets = kvzalloc(num_bos * sizeof(*bo_buckets), GFP_KERNEL);
+ bo_buckets = kvcalloc(num_bos, sizeof(*bo_buckets), GFP_KERNEL);
if (!bo_buckets)
return -ENOMEM;
- bo_privs = kvzalloc(num_bos * sizeof(*bo_privs), GFP_KERNEL);
+ bo_privs = kvcalloc(num_bos, sizeof(*bo_privs), GFP_KERNEL);
if (!bo_privs) {
ret = -ENOMEM;
goto exit;
}
- files = kvzalloc(num_bos * sizeof(struct file *), GFP_KERNEL);
+ files = kvcalloc(num_bos, sizeof(struct file *), GFP_KERNEL);
if (!files) {
ret = -ENOMEM;
goto exit;
@@ -2463,7 +2463,7 @@ static int criu_restore_bos(struct kfd_p
if (!bo_buckets)
return -ENOMEM;
- files = kvzalloc(args->num_bos * sizeof(struct file *), GFP_KERNEL);
+ files = kvcalloc(args->num_bos, sizeof(struct file *), GFP_KERNEL);
if (!files) {
ret = -ENOMEM;
goto exit;
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 353/675] drm/amdkfd: Check bounds in allocate_event_notification_slot
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (351 preceding siblings ...)
2026-07-30 14:11 ` [PATCH 6.18 352/675] drm/amdkfd: Use kvcalloc to allocate arrays Greg Kroah-Hartman
@ 2026-07-30 14:11 ` Greg Kroah-Hartman
2026-07-30 14:11 ` [PATCH 6.18 354/675] drm/amdkfd: Check bounds on CRIU restore queue type and mqd size Greg Kroah-Hartman
` (326 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:11 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, David Francis, David Yat Sin,
Alex Deucher
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: David Francis <David.Francis@amd.com>
commit bb52249fbbe948875155ccd45cd8d74bf4ae747b upstream.
The valid event ids go from 0 to KFD_SIGNAL_EVENT_LIMIT
allocate_event_notification_slot has an option to specify
an event id to allocate at, used by CRIU. We weren't checking
the bounds on that value.
Check them.
v2: Lower bounds check is unecessary because of idr_alloc
already rejecting negative numbers. Upper bounds check should
be KFD_SIGNAL_EVENT_LIMIT since the signal mode mappings might
not yet exist
Signed-off-by: David Francis <David.Francis@amd.com>
Reviewed-by: David Yat Sin <david.yatsin@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 6853f1f6cbbeb3f53ebbbd7286536aeb2c5d5f50)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/amdkfd/kfd_events.c | 3 +++
1 file changed, 3 insertions(+)
--- a/drivers/gpu/drm/amd/amdkfd/kfd_events.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_events.c
@@ -107,6 +107,9 @@ static int allocate_event_notification_s
}
if (restore_id) {
+ if (*restore_id >= KFD_SIGNAL_EVENT_LIMIT)
+ return -EINVAL;
+
id = idr_alloc(&p->event_idr, ev, *restore_id, *restore_id + 1,
GFP_KERNEL);
} else {
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 354/675] drm/amdkfd: Check bounds on CRIU restore queue type and mqd size
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (352 preceding siblings ...)
2026-07-30 14:11 ` [PATCH 6.18 353/675] drm/amdkfd: Check bounds in allocate_event_notification_slot Greg Kroah-Hartman
@ 2026-07-30 14:11 ` Greg Kroah-Hartman
2026-07-30 14:11 ` [PATCH 6.18 355/675] drm/amdkfd: fix 32-bit overflow in CWSR total size calculation Greg Kroah-Hartman
` (325 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:11 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, David Yat Sin, David Francis,
Alex Deucher
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: David Francis <David.Francis@amd.com>
commit 47ea05f246bebc81c7796f56265cffd812cf0601 upstream.
We weren't checking whether the values provided in the private
data in kfd CRIU restore were within bounds.
For queue type, add a KFD_QUEUE_TYPE_MAX and ensure the provided
type is less than it.
For mqd_size, add new function mqd_size_from_queue_type and confirm
that the provided mqd_size matches expectations.
Reviewed-by: David Yat Sin <david.yatsin@amd.com>
Signed-off-by: David Francis <David.Francis@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit f19d8086f6644083c913d70bfdeee20e1b6f46a5)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c | 6 ++++
drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.h | 2 +
drivers/gpu/drm/amd/amdkfd/kfd_priv.h | 3 +-
drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c | 24 ++++++++++++-----
4 files changed, 27 insertions(+), 8 deletions(-)
--- a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
@@ -3628,6 +3628,12 @@ out:
dqm_unlock(dqm);
return r;
}
+
+size_t mqd_size_from_queue_type(struct device_queue_manager *dqm, enum kfd_queue_type type)
+{
+ return dqm->mqd_mgrs[get_mqd_type_from_queue_type(type)]->mqd_size;
+}
+
#if defined(CONFIG_DEBUG_FS)
static void seq_reg_dump(struct seq_file *m,
--- a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.h
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.h
@@ -327,6 +327,8 @@ int debug_refresh_runlist(struct device_
bool kfd_dqm_is_queue_in_process(struct device_queue_manager *dqm,
struct qcm_process_device *qpd,
int doorbell_off, u32 *queue_format);
+size_t mqd_size_from_queue_type(struct device_queue_manager *dqm,
+ enum kfd_queue_type type);
static inline unsigned int get_sh_mem_bases_32(struct kfd_process_device *pdd)
{
--- a/drivers/gpu/drm/amd/amdkfd/kfd_priv.h
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_priv.h
@@ -436,7 +436,8 @@ enum kfd_queue_type {
KFD_QUEUE_TYPE_HIQ,
KFD_QUEUE_TYPE_DIQ,
KFD_QUEUE_TYPE_SDMA_XGMI,
- KFD_QUEUE_TYPE_SDMA_BY_ENG_ID
+ KFD_QUEUE_TYPE_SDMA_BY_ENG_ID,
+ KFD_QUEUE_TYPE_MAX,
};
enum kfd_queue_format {
--- a/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c
@@ -1015,6 +1015,23 @@ int kfd_criu_restore_queue(struct kfd_pr
goto exit;
}
+ pdd = kfd_process_device_data_by_id(p, q_data->gpu_id);
+ if (!pdd) {
+ pr_err("Failed to get pdd\n");
+ ret = -EINVAL;
+ goto exit;
+ }
+
+ if (q_data->type >= KFD_QUEUE_TYPE_MAX) {
+ ret = -EINVAL;
+ goto exit;
+ }
+
+ if (q_data->mqd_size != mqd_size_from_queue_type(pdd->dev->dqm, q_data->type)) {
+ ret = -EINVAL;
+ goto exit;
+ }
+
*priv_data_offset += sizeof(*q_data);
q_extra_data_size = (uint64_t)q_data->ctl_stack_size + q_data->mqd_size;
@@ -1037,13 +1054,6 @@ int kfd_criu_restore_queue(struct kfd_pr
*priv_data_offset += q_extra_data_size;
- pdd = kfd_process_device_data_by_id(p, q_data->gpu_id);
- if (!pdd) {
- pr_err("Failed to get pdd\n");
- ret = -EINVAL;
- goto exit;
- }
-
/*
* data stored in this order:
* mqd[xcc0], mqd[xcc1],..., ctl_stack[xcc0], ctl_stack[xcc1]...
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 355/675] drm/amdkfd: fix 32-bit overflow in CWSR total size calculation
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (353 preceding siblings ...)
2026-07-30 14:11 ` [PATCH 6.18 354/675] drm/amdkfd: Check bounds on CRIU restore queue type and mqd size Greg Kroah-Hartman
@ 2026-07-30 14:11 ` Greg Kroah-Hartman
2026-07-30 14:11 ` [PATCH 6.18 356/675] drm/amd/display: Handle struct drm_plane_state.ignore_damage_clips Greg Kroah-Hartman
` (324 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:11 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Yongqiang Sun, Philip Yang,
Alex Deucher
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Yongqiang Sun <Yongqiang.Sun@amd.com>
commit 2b0386d4293920e690c0e017708f999b93cc729b upstream.
total_cwsr_size was computed in 32-bit before being used as a BO/SVM
allocation size.
With large ctx_save_restore_area_size and debug_memory_size
multiplied by the XCC count, the product can wrap,
yielding an undersized CWSR save area that firmware later overruns.
Promote total_cwsr_size to u64 and use check_add_overflow()/
check_mul_overflow() in both kfd_queue_acquire_buffers() and
kfd_queue_release_buffers().
Signed-off-by: Yongqiang Sun <Yongqiang.Sun@amd.com>
Reviewed-by: Philip Yang <philip.yang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 319f7e13423ae3f486b9aea82f9ad2d6af0ee608)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/amdkfd/kfd_queue.c | 23 +++++++++++++++++------
1 file changed, 17 insertions(+), 6 deletions(-)
--- a/drivers/gpu/drm/amd/amdkfd/kfd_queue.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_queue.c
@@ -23,6 +23,7 @@
*/
#include <linux/slab.h>
+#include <linux/overflow.h>
#include "kfd_priv.h"
#include "kfd_topology.h"
#include "kfd_svm.h"
@@ -235,7 +236,7 @@ int kfd_queue_acquire_buffers(struct kfd
struct kfd_topology_device *topo_dev;
u64 expected_queue_size;
struct amdgpu_vm *vm;
- u32 total_cwsr_size;
+ u64 total_cwsr_size;
int err;
topo_dev = kfd_topology_device_by_id(pdd->dev->id);
@@ -305,8 +306,14 @@ int kfd_queue_acquire_buffers(struct kfd
goto out_err_unreserve;
}
- total_cwsr_size = (properties->ctx_save_restore_area_size +
- topo_dev->node_props.debug_memory_size) * NUM_XCC(pdd->dev->xcc_mask);
+ total_cwsr_size = (u64)properties->ctx_save_restore_area_size +
+ topo_dev->node_props.debug_memory_size;
+ if (check_mul_overflow(total_cwsr_size,
+ NUM_XCC(pdd->dev->xcc_mask),
+ &total_cwsr_size)) {
+ err = -EINVAL;
+ goto out_err_unreserve;
+ }
total_cwsr_size = ALIGN(total_cwsr_size, PAGE_SIZE);
err = kfd_queue_buffer_get(vm, (void *)properties->ctx_save_restore_area_address,
@@ -341,7 +348,7 @@ out_err_release:
int kfd_queue_release_buffers(struct kfd_process_device *pdd, struct queue_properties *properties)
{
struct kfd_topology_device *topo_dev;
- u32 total_cwsr_size;
+ u64 total_cwsr_size;
kfd_queue_buffer_put(&properties->wptr_bo);
kfd_queue_buffer_put(&properties->rptr_bo);
@@ -352,8 +359,12 @@ int kfd_queue_release_buffers(struct kfd
topo_dev = kfd_topology_device_by_id(pdd->dev->id);
if (!topo_dev)
return -EINVAL;
- total_cwsr_size = (properties->ctx_save_restore_area_size +
- topo_dev->node_props.debug_memory_size) * NUM_XCC(pdd->dev->xcc_mask);
+ total_cwsr_size = (u64)properties->ctx_save_restore_area_size +
+ topo_dev->node_props.debug_memory_size;
+ if (check_mul_overflow(total_cwsr_size,
+ NUM_XCC(pdd->dev->xcc_mask),
+ &total_cwsr_size))
+ return -EINVAL;
total_cwsr_size = ALIGN(total_cwsr_size, PAGE_SIZE);
kfd_queue_buffer_svm_put(pdd, properties->ctx_save_restore_area_address, total_cwsr_size);
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 356/675] drm/amd/display: Handle struct drm_plane_state.ignore_damage_clips
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (354 preceding siblings ...)
2026-07-30 14:11 ` [PATCH 6.18 355/675] drm/amdkfd: fix 32-bit overflow in CWSR total size calculation Greg Kroah-Hartman
@ 2026-07-30 14:11 ` Greg Kroah-Hartman
2026-07-30 14:11 ` [PATCH 6.18 357/675] drm/amd/display: detect_link_and_local_sink: DP alt mode timeout path leaks prev_sink reference Greg Kroah-Hartman
` (323 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:11 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Thomas Zimmermann,
Javier Martinez Canillas, Zack Rusin, dri-devel, Harry Wentland,
Alex Deucher
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Thomas Zimmermann <tzimmermann@suse.de>
commit ac11060c6d4959e2d4ceada037d2e1e1bfcf6645 upstream.
The mode-setting pipeline can disabled damage clippings for a commit
by setting ignore_damage_clips in struct drm_plane_state. The commit
will then do a full display update.
Test the flag in DCN code and do a full update in DCN code if it has
been set.
Commit 35ed38d58257 ("drm: Allow drivers to indicate the damage helpers
to ignore damage clips") introduced ignore_damage_clips to selectively
ignore damage clipping in certain framebuffer changes. This driver does
not do that, but DRM's damage iterator will soon rely on the flag.
Therefore supporting it here as well make sense for consistency.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Fixes: 35ed38d58257 ("drm: Allow drivers to indicate the damage helpers to ignore damage clips")
Cc: Javier Martinez Canillas <javierm@redhat.com>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Zack Rusin <zackr@vmware.com>
Cc: dri-devel@lists.freedesktop.org
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit a24019f6480fad5c077b5956eed942c8960323d6)
Cc: <stable@vger.kernel.org> # v6.8+
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -6240,8 +6240,8 @@ static void fill_dc_dirty_rects(struct d
{
struct dm_crtc_state *dm_crtc_state = to_dm_crtc_state(crtc_state);
struct rect *dirty_rects = flip_addrs->dirty_rects;
- u32 num_clips;
- struct drm_mode_rect *clips;
+ u32 num_clips = 0;
+ struct drm_mode_rect *clips = NULL;
bool bb_changed;
bool fb_changed;
u32 i = 0;
@@ -6257,8 +6257,10 @@ static void fill_dc_dirty_rects(struct d
if (new_plane_state->rotation != DRM_MODE_ROTATE_0)
goto ffu;
- num_clips = drm_plane_get_damage_clips_count(new_plane_state);
- clips = drm_plane_get_damage_clips(new_plane_state);
+ if (!new_plane_state->ignore_damage_clips) {
+ num_clips = drm_plane_get_damage_clips_count(new_plane_state);
+ clips = drm_plane_get_damage_clips(new_plane_state);
+ }
if (num_clips && (!amdgpu_damage_clips || (amdgpu_damage_clips < 0 &&
is_psr_su)))
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 357/675] drm/amd/display: detect_link_and_local_sink: DP alt mode timeout path leaks prev_sink reference
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (355 preceding siblings ...)
2026-07-30 14:11 ` [PATCH 6.18 356/675] drm/amd/display: Handle struct drm_plane_state.ignore_damage_clips Greg Kroah-Hartman
@ 2026-07-30 14:11 ` Greg Kroah-Hartman
2026-07-30 14:11 ` [PATCH 6.18 358/675] drm/virtio: bound EDID block reads to the response buffer Greg Kroah-Hartman
` (322 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:11 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, WenTao Liang,
Mario Limonciello (AMD), Mario Limonciello, Alex Deucher
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: WenTao Liang <vulab@iscas.ac.cn>
commit a6e14b976be48eebd8769cb5b883a6af7fc5ade1 upstream.
prev_sink is unconditionally retained via dc_sink_retain at function
entry, but the DP alt mode timeout path inside SIGNAL_TYPE_DISPLAY_PORT
returns false without releasing prev_sink. All other return paths in the
function correctly call dc_sink_release(prev_sink), making this the only
missing cleanup.
Fixes: 54618888d1ea ("drm/amd/display: break down dc_link.c")
Signed-off-by: WenTao Liang <vulab@iscas.ac.cn>
Reviewed-by: Mario Limonciello (AMD) <superm1@kernel.org>
Link: https://patch.msgid.link/20260626124555.36910-1-vulab@iscas.ac.cn
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 45510cf662dcf46b5d8926d454f338809f107b9d)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/display/dc/link/link_detection.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
--- a/drivers/gpu/drm/amd/display/dc/link/link_detection.c
+++ b/drivers/gpu/drm/amd/display/dc/link/link_detection.c
@@ -979,8 +979,11 @@ static bool detect_link_and_local_sink(s
link->link_enc->features.flags.bits.DP_IS_USB_C == 1) {
/* if alt mode times out, return false */
- if (!wait_for_entering_dp_alt_mode(link))
+ if (!wait_for_entering_dp_alt_mode(link)) {
+ if (prev_sink)
+ dc_sink_release(prev_sink);
return false;
+ }
}
if (!detect_dp(link, &sink_caps, reason)) {
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 358/675] drm/virtio: bound EDID block reads to the response buffer
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (356 preceding siblings ...)
2026-07-30 14:11 ` [PATCH 6.18 357/675] drm/amd/display: detect_link_and_local_sink: DP alt mode timeout path leaks prev_sink reference Greg Kroah-Hartman
@ 2026-07-30 14:11 ` Greg Kroah-Hartman
2026-07-30 14:11 ` [PATCH 6.18 359/675] drm/i915/hdcp: require monotonically increasing seq_num_v Greg Kroah-Hartman
` (321 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:11 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Bryam Vargas, Dmitry Osipenko
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Bryam Vargas <hexlabsecurity@proton.me>
commit 4e1a53892ba7f8a3e1da6bfc53c83ae7c812dccd upstream.
virtio_get_edid_block() validates the read offset only against the
device-supplied resp->size field, never against the fixed-size resp->edid
array. The EDID block index is driven by the device-supplied extension
count, so a malicious virtio-gpu backend can advertise a large size
together with a high block count and read far past the array into adjacent
kernel memory, which is then surfaced in the parsed EDID (an out-of-bounds
read / info leak).
Also reject any read whose end exceeds the size of the edid array.
Conforming EDID responses stay within the array and are unaffected.
Fixes: b4b01b4995fb ("drm/virtio: add edid support")
Cc: stable@vger.kernel.org
Signed-off-by: Bryam Vargas <hexlabsecurity@proton.me>
Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Link: https://patch.msgid.link/20260620-b4-disp-22bba7bf-v1-1-b95924cee742@proton.me
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/virtio/virtgpu_vq.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/gpu/drm/virtio/virtgpu_vq.c
+++ b/drivers/gpu/drm/virtio/virtgpu_vq.c
@@ -893,7 +893,8 @@ static int virtio_get_edid_block(void *d
struct virtio_gpu_resp_edid *resp = data;
size_t start = block * EDID_LENGTH;
- if (start + len > le32_to_cpu(resp->size))
+ if (start + len > le32_to_cpu(resp->size) ||
+ start + len > sizeof(resp->edid))
return -EINVAL;
memcpy(buf, resp->edid + start, len);
return 0;
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 359/675] drm/i915/hdcp: require monotonically increasing seq_num_v
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (357 preceding siblings ...)
2026-07-30 14:11 ` [PATCH 6.18 358/675] drm/virtio: bound EDID block reads to the response buffer Greg Kroah-Hartman
@ 2026-07-30 14:11 ` Greg Kroah-Hartman
2026-07-30 14:11 ` [PATCH 6.18 360/675] drm/i915/hdcp: check streams[] bounds before overflow Greg Kroah-Hartman
` (320 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:11 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Martin Hodo, Suraj Kandpal,
Jani Nikula, Joonas Lahtinen
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jani Nikula <jani.nikula@intel.com>
commit db9e64c983dcb07ff256bd455f258c44aa530ff8 upstream.
The HDCP 2.2 specification requires the seq_num_v to be monotonically
increasing, and repeated seq_num_v needs to be treated as an integrity
failure. Make it so.
For the first message, seq_num_v must be zero, and is already
checked. We can only check for less-than-or-equal for the subsequent
messages, where hdcp2_encrypted is true.
Discovered using AI-assisted static analysis confirmed by Intel Product
Security.
Reported-by: Martin Hodo <martin.hodo@intel.com>
Fixes: d849178e2c9e ("drm/i915: Implement HDCP2.2 repeater authentication")
Cc: stable@vger.kernel.org # v5.2+
Cc: Suraj Kandpal <suraj.kandpal@intel.com>
Reviewed-by: Suraj Kandpal <suraj.kandpal@intel.com>
Link: https://patch.msgid.link/20260625104407.1025614-1-jani.nikula@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
(cherry picked from commit 58a224375c81179b52558c53d8857b93196d2687)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/i915/display/intel_hdcp.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
--- a/drivers/gpu/drm/i915/display/intel_hdcp.c
+++ b/drivers/gpu/drm/i915/display/intel_hdcp.c
@@ -1794,9 +1794,10 @@ int hdcp2_authenticate_repeater_topology
return -EINVAL;
}
- if (seq_num_v < hdcp->seq_num_v) {
- /* Roll over of the seq_num_v from repeater. Reauthenticate. */
- drm_dbg_kms(display->drm, "Seq_num_v roll over.\n");
+ if (hdcp->hdcp2_encrypted && seq_num_v <= hdcp->seq_num_v) {
+ /* Reauthenticate on Seq_num_v repeat or rollover */
+ drm_dbg_kms(display->drm, "Seq_num_v %s\n",
+ seq_num_v == hdcp->seq_num_v ? "repeat" : "rollover");
return -EINVAL;
}
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 360/675] drm/i915/hdcp: check streams[] bounds before overflow
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (358 preceding siblings ...)
2026-07-30 14:11 ` [PATCH 6.18 359/675] drm/i915/hdcp: require monotonically increasing seq_num_v Greg Kroah-Hartman
@ 2026-07-30 14:11 ` Greg Kroah-Hartman
2026-07-30 14:11 ` [PATCH 6.18 361/675] drm/amdgpu/sdma7.0: replace BUG_ON() with WARN_ON() Greg Kroah-Hartman
` (319 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:11 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Martin Hodo, Anshuman Gupta,
Suraj Kandpal, Jani Nikula, Joonas Lahtinen
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jani Nikula <jani.nikula@intel.com>
commit bbb15a6b042d02e5508a02b4847e02d2579ee7bc upstream.
The data->streams[] overflow check is done after the buffer overflow has
already happened. Move the overflow check before the write.
Side note, emitting a warning splat with a backtrace might be overkill
here, but prefer not changing the behaviour other than not doing the
overrun.
Discovered using AI-assisted static analysis confirmed by Intel Product
Security.
Reported-by: Martin Hodo <martin.hodo@intel.com>
Fixes: e03187e12cae ("drm/i915/hdcp: MST streams support in hdcp port_data")
Cc: stable@vger.kernel.org # v5.12+
Cc: Anshuman Gupta <anshuman.gupta@intel.com>
Cc: Suraj Kandpal <suraj.kandpal@intel.com>
Reviewed-by: Suraj Kandpal <suraj.kandpal@intel.com>
Link: https://patch.msgid.link/20260625170304.1104723-1-jani.nikula@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
(cherry picked from commit 9284ab3b6e776c315883ac2611283d263c9460fd)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/i915/display/intel_hdcp.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
--- a/drivers/gpu/drm/i915/display/intel_hdcp.c
+++ b/drivers/gpu/drm/i915/display/intel_hdcp.c
@@ -140,6 +140,9 @@ intel_hdcp_required_content_stream(struc
if (conn_dig_port != dig_port)
continue;
+ if (drm_WARN_ON(display->drm, data->k >= INTEL_NUM_PIPES(display)))
+ return -EINVAL;
+
data->streams[data->k].stream_id =
intel_conn_to_vcpi(state, connector);
data->k++;
@@ -150,7 +153,7 @@ intel_hdcp_required_content_stream(struc
}
drm_connector_list_iter_end(&conn_iter);
- if (drm_WARN_ON(display->drm, data->k > INTEL_NUM_PIPES(display) || data->k == 0))
+ if (drm_WARN_ON(display->drm, !data->k))
return -EINVAL;
/*
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 361/675] drm/amdgpu/sdma7.0: replace BUG_ON() with WARN_ON()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (359 preceding siblings ...)
2026-07-30 14:11 ` [PATCH 6.18 360/675] drm/i915/hdcp: check streams[] bounds before overflow Greg Kroah-Hartman
@ 2026-07-30 14:11 ` Greg Kroah-Hartman
2026-07-30 14:11 ` [PATCH 6.18 362/675] drm/amdgpu/sdma6.0: " Greg Kroah-Hartman
` (318 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:11 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Vitaly Prosyak, Alex Deucher
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Alex Deucher <alexander.deucher@amd.com>
commit e80e28f398f5d9f6e361ffb56382d2e74fc87556 upstream.
There's no need to crash the kernel for these cases.
Reviewed-by: Vitaly Prosyak <vitaly.prosyak@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 9723a8bed3aa251a26bee4583bac9d8fb064dd44)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/amdgpu/sdma_v7_0.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/gpu/drm/amd/amdgpu/sdma_v7_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/sdma_v7_0.c
@@ -364,7 +364,7 @@ static void sdma_v7_0_ring_emit_fence(st
amdgpu_ring_write(ring, SDMA_PKT_COPY_LINEAR_HEADER_OP(SDMA_OP_FENCE) |
SDMA_PKT_FENCE_HEADER_MTYPE(0x3)); /* Ucached(UC) */
/* zero in first two bits */
- BUG_ON(addr & 0x3);
+ WARN_ON(addr & 0x3);
amdgpu_ring_write(ring, lower_32_bits(addr));
amdgpu_ring_write(ring, upper_32_bits(addr));
amdgpu_ring_write(ring, lower_32_bits(seq));
@@ -375,7 +375,7 @@ static void sdma_v7_0_ring_emit_fence(st
amdgpu_ring_write(ring, SDMA_PKT_COPY_LINEAR_HEADER_OP(SDMA_OP_FENCE) |
SDMA_PKT_FENCE_HEADER_MTYPE(0x3));
/* zero in first two bits */
- BUG_ON(addr & 0x3);
+ WARN_ON(addr & 0x3);
amdgpu_ring_write(ring, lower_32_bits(addr));
amdgpu_ring_write(ring, upper_32_bits(addr));
amdgpu_ring_write(ring, upper_32_bits(seq));
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 362/675] drm/amdgpu/sdma6.0: replace BUG_ON() with WARN_ON()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (360 preceding siblings ...)
2026-07-30 14:11 ` [PATCH 6.18 361/675] drm/amdgpu/sdma7.0: replace BUG_ON() with WARN_ON() Greg Kroah-Hartman
@ 2026-07-30 14:11 ` Greg Kroah-Hartman
2026-07-30 14:11 ` [PATCH 6.18 363/675] drm/amdgpu/sdma5.2: " Greg Kroah-Hartman
` (317 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:11 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Vitaly Prosyak, Alex Deucher
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Alex Deucher <alexander.deucher@amd.com>
commit ec42c96c322e5cc48099ab5e67b5cbe236cb1949 upstream.
There's no need to crash the kernel for these cases.
Reviewed-by: Vitaly Prosyak <vitaly.prosyak@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit c17a508a7d652da3728f8bbc481bfffe96d65a87)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/amdgpu/sdma_v6_0.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/gpu/drm/amd/amdgpu/sdma_v6_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/sdma_v6_0.c
@@ -360,7 +360,7 @@ static void sdma_v6_0_ring_emit_fence(st
amdgpu_ring_write(ring, SDMA_PKT_COPY_LINEAR_HEADER_OP(SDMA_OP_FENCE) |
SDMA_PKT_FENCE_HEADER_MTYPE(0x3)); /* Ucached(UC) */
/* zero in first two bits */
- BUG_ON(addr & 0x3);
+ WARN_ON(addr & 0x3);
amdgpu_ring_write(ring, lower_32_bits(addr));
amdgpu_ring_write(ring, upper_32_bits(addr));
amdgpu_ring_write(ring, lower_32_bits(seq));
@@ -371,7 +371,7 @@ static void sdma_v6_0_ring_emit_fence(st
amdgpu_ring_write(ring, SDMA_PKT_COPY_LINEAR_HEADER_OP(SDMA_OP_FENCE) |
SDMA_PKT_FENCE_HEADER_MTYPE(0x3));
/* zero in first two bits */
- BUG_ON(addr & 0x3);
+ WARN_ON(addr & 0x3);
amdgpu_ring_write(ring, lower_32_bits(addr));
amdgpu_ring_write(ring, upper_32_bits(addr));
amdgpu_ring_write(ring, upper_32_bits(seq));
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 363/675] drm/amdgpu/sdma5.2: replace BUG_ON() with WARN_ON()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (361 preceding siblings ...)
2026-07-30 14:11 ` [PATCH 6.18 362/675] drm/amdgpu/sdma6.0: " Greg Kroah-Hartman
@ 2026-07-30 14:11 ` Greg Kroah-Hartman
2026-07-30 14:11 ` [PATCH 6.18 364/675] drm/amdgpu/sdma5.0: " Greg Kroah-Hartman
` (316 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:11 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Vitaly Prosyak, Alex Deucher
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Alex Deucher <alexander.deucher@amd.com>
commit b9dd618a635d39fbb211454b6e8837b2a7f10fb0 upstream.
There's no need to crash the kernel for these cases.
Reviewed-by: Vitaly Prosyak <vitaly.prosyak@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit ae658afc7f47f6147371ec42cc6b1a793dfdb5af)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/amdgpu/sdma_v5_2.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/gpu/drm/amd/amdgpu/sdma_v5_2.c
+++ b/drivers/gpu/drm/amd/amdgpu/sdma_v5_2.c
@@ -378,7 +378,7 @@ static void sdma_v5_2_ring_emit_fence(st
amdgpu_ring_write(ring, SDMA_PKT_HEADER_OP(SDMA_OP_FENCE) |
SDMA_PKT_FENCE_HEADER_MTYPE(0x3)); /* Ucached(UC) */
/* zero in first two bits */
- BUG_ON(addr & 0x3);
+ WARN_ON(addr & 0x3);
amdgpu_ring_write(ring, lower_32_bits(addr));
amdgpu_ring_write(ring, upper_32_bits(addr));
amdgpu_ring_write(ring, lower_32_bits(seq));
@@ -389,7 +389,7 @@ static void sdma_v5_2_ring_emit_fence(st
amdgpu_ring_write(ring, SDMA_PKT_HEADER_OP(SDMA_OP_FENCE) |
SDMA_PKT_FENCE_HEADER_MTYPE(0x3));
/* zero in first two bits */
- BUG_ON(addr & 0x3);
+ WARN_ON(addr & 0x3);
amdgpu_ring_write(ring, lower_32_bits(addr));
amdgpu_ring_write(ring, upper_32_bits(addr));
amdgpu_ring_write(ring, upper_32_bits(seq));
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 364/675] drm/amdgpu/sdma5.0: replace BUG_ON() with WARN_ON()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (362 preceding siblings ...)
2026-07-30 14:11 ` [PATCH 6.18 363/675] drm/amdgpu/sdma5.2: " Greg Kroah-Hartman
@ 2026-07-30 14:11 ` Greg Kroah-Hartman
2026-07-30 14:11 ` [PATCH 6.18 365/675] drm/i915: Return NULL on error in active_instance Greg Kroah-Hartman
` (315 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:11 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Vitaly Prosyak, Alex Deucher
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Alex Deucher <alexander.deucher@amd.com>
commit 9e98ed3113943257ad6e5c1e6beddbdb482a70ad upstream.
There's no need to crash the kernel for these cases.
Reviewed-by: Vitaly Prosyak <vitaly.prosyak@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 8d144a0eb09537055841af48c9e7c2d4cd48e84d)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/amdgpu/sdma_v5_0.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/gpu/drm/amd/amdgpu/sdma_v5_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/sdma_v5_0.c
@@ -528,7 +528,7 @@ static void sdma_v5_0_ring_emit_fence(st
amdgpu_ring_write(ring, SDMA_PKT_HEADER_OP(SDMA_OP_FENCE) |
SDMA_PKT_FENCE_HEADER_MTYPE(0x3)); /* Ucached(UC) */
/* zero in first two bits */
- BUG_ON(addr & 0x3);
+ WARN_ON(addr & 0x3);
amdgpu_ring_write(ring, lower_32_bits(addr));
amdgpu_ring_write(ring, upper_32_bits(addr));
amdgpu_ring_write(ring, lower_32_bits(seq));
@@ -539,7 +539,7 @@ static void sdma_v5_0_ring_emit_fence(st
amdgpu_ring_write(ring, SDMA_PKT_HEADER_OP(SDMA_OP_FENCE) |
SDMA_PKT_FENCE_HEADER_MTYPE(0x3));
/* zero in first two bits */
- BUG_ON(addr & 0x3);
+ WARN_ON(addr & 0x3);
amdgpu_ring_write(ring, lower_32_bits(addr));
amdgpu_ring_write(ring, upper_32_bits(addr));
amdgpu_ring_write(ring, upper_32_bits(seq));
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 365/675] drm/i915: Return NULL on error in active_instance
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (363 preceding siblings ...)
2026-07-30 14:11 ` [PATCH 6.18 364/675] drm/amdgpu/sdma5.0: " Greg Kroah-Hartman
@ 2026-07-30 14:11 ` Greg Kroah-Hartman
2026-07-30 14:11 ` [PATCH 6.18 366/675] drm/i915/bios: range check LFP Data Block panel_type2 Greg Kroah-Hartman
` (314 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:11 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Martin Hodo, Maarten Lankhorst,
Thomas Hellström, Simona Vetter, Joonas Lahtinen,
Sebastian Brzezinka
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
commit 1e33f0de5fdcd09e51fdec1e5822448970b6420f upstream.
Avoid returning &node->base when node is NULL due to OOM
during GFP_ATOMIC allocation.
Discovered using AI-assisted static analysis confirmed by
Intel Product Security.
Reported-by: Martin Hodo <martin.hodo@intel.com>
Fixes: bfaae47db3c0 ("drm/i915: make lockdep slightly happier about execbuf.")
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Cc: Simona Vetter <simona.vetter@ffwll.ch>
Cc: <stable@vger.kernel.org> # v5.13+
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Sebastian Brzezinka <sebastian.brzezinka@intel.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patch.msgid.link/20260624090940.74840-1-joonas.lahtinen@linux.intel.com
(cherry picked from commit 6029bc064f0b1bac184203a50fbaaf070fa18832)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/i915/i915_active.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
--- a/drivers/gpu/drm/i915/i915_active.c
+++ b/drivers/gpu/drm/i915/i915_active.c
@@ -318,7 +318,7 @@ active_instance(struct i915_active *ref,
*/
node = kmem_cache_alloc(slab_cache, GFP_ATOMIC);
if (!node)
- goto out;
+ goto err;
__i915_active_fence_init(&node->base, NULL, node_retire);
node->ref = ref;
@@ -332,6 +332,11 @@ out:
spin_unlock_irq(&ref->tree_lock);
return &node->base;
+
+err:
+ spin_unlock_irq(&ref->tree_lock);
+
+ return NULL;
}
void __i915_active_init(struct i915_active *ref,
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 366/675] drm/i915/bios: range check LFP Data Block panel_type2
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (364 preceding siblings ...)
2026-07-30 14:11 ` [PATCH 6.18 365/675] drm/i915: Return NULL on error in active_instance Greg Kroah-Hartman
@ 2026-07-30 14:11 ` Greg Kroah-Hartman
2026-07-30 14:11 ` [PATCH 6.18 367/675] drm/amd/amdgpu: disable ASPM on VI if pcie dpm is disabled Greg Kroah-Hartman
` (313 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:11 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Martin Hodo, Animesh Manna,
Ville Syrjälä, Ville Syrjälä, Jani Nikula,
Joonas Lahtinen, Michał Grzelak
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jani Nikula <jani.nikula@intel.com>
commit 2084503f2d087bf956198e7f6eb25b03a7049cb2 upstream.
While the panel_type from LFP Data Block is range checked, panel_type2
is not. Add a few helpers for range checking, and use them to not only
check panel_type2, but also improve clarity and correctness in the panel
type selection.
Discovered using AI-assisted static analysis confirmed by Intel Product
Security.
v2:
- Fix commit message typo (Michał)
- Add is_panel_type_pnp() (Ville)
Reported-by: Martin Hodo <martin.hodo@intel.com>
Fixes: 6434cf630086 ("drm/i915/bios: calculate panel type as per child device index in VBT")
Cc: stable@vger.kernel.org # v6.0+
Cc: Animesh Manna <animesh.manna@intel.com>
Cc: Ville Syrjälä <ville.syrjala@intel.com>
Reviewed-by: Michał Grzelak <michal.grzelak@intel.com> # v1
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patch.msgid.link/20260626140155.1389655-1-jani.nikula@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
(cherry picked from commit c9ebe5d2f25729d6cfbbb1235d640bf67f9275df)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/i915/display/intel_bios.c | 36 +++++++++++++++++++++++-------
1 file changed, 28 insertions(+), 8 deletions(-)
--- a/drivers/gpu/drm/i915/display/intel_bios.c
+++ b/drivers/gpu/drm/i915/display/intel_bios.c
@@ -624,6 +624,21 @@ get_lfp_data_tail(const struct bdb_lfp_d
return NULL;
}
+static bool is_panel_type_valid(int panel_type)
+{
+ return panel_type >= 0 && panel_type < 16;
+}
+
+static bool is_panel_type_pnp(int panel_type)
+{
+ return panel_type == 0xff;
+}
+
+static bool is_panel_type_valid_or_pnp(int panel_type)
+{
+ return is_panel_type_valid(panel_type) || is_panel_type_pnp(panel_type);
+}
+
static int opregion_get_panel_type(struct intel_display *display,
const struct intel_bios_encoder_data *devdata,
const struct drm_edid *drm_edid, bool use_fallback)
@@ -641,15 +656,21 @@ static int vbt_get_panel_type(struct int
if (!lfp_options)
return -1;
- if (lfp_options->panel_type > 0xf &&
- lfp_options->panel_type != 0xff) {
+ if (!is_panel_type_valid_or_pnp(lfp_options->panel_type)) {
drm_dbg_kms(display->drm, "Invalid VBT panel type 0x%x\n",
lfp_options->panel_type);
return -1;
}
- if (devdata && devdata->child.handle == DEVICE_HANDLE_LFP2)
+ if (devdata && devdata->child.handle == DEVICE_HANDLE_LFP2) {
+ if (!is_panel_type_valid_or_pnp(lfp_options->panel_type2)) {
+ drm_dbg_kms(display->drm, "Invalid VBT panel type 2 0x%x\n",
+ lfp_options->panel_type2);
+ return -1;
+ }
+
return lfp_options->panel_type2;
+ }
drm_WARN_ON(display->drm,
devdata && devdata->child.handle != DEVICE_HANDLE_LFP1);
@@ -763,13 +784,12 @@ static int get_panel_type(struct intel_d
panel_types[i].name, panel_types[i].panel_type);
}
- if (panel_types[PANEL_TYPE_OPREGION].panel_type >= 0)
+ if (is_panel_type_valid(panel_types[PANEL_TYPE_OPREGION].panel_type))
i = PANEL_TYPE_OPREGION;
- else if (panel_types[PANEL_TYPE_VBT].panel_type == 0xff &&
- panel_types[PANEL_TYPE_PNPID].panel_type >= 0)
+ else if (is_panel_type_pnp(panel_types[PANEL_TYPE_VBT].panel_type) &&
+ is_panel_type_valid(panel_types[PANEL_TYPE_PNPID].panel_type))
i = PANEL_TYPE_PNPID;
- else if (panel_types[PANEL_TYPE_VBT].panel_type != 0xff &&
- panel_types[PANEL_TYPE_VBT].panel_type >= 0)
+ else if (is_panel_type_valid(panel_types[PANEL_TYPE_VBT].panel_type))
i = PANEL_TYPE_VBT;
else
i = PANEL_TYPE_FALLBACK;
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 367/675] drm/amd/amdgpu: disable ASPM on VI if pcie dpm is disabled
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (365 preceding siblings ...)
2026-07-30 14:11 ` [PATCH 6.18 366/675] drm/i915/bios: range check LFP Data Block panel_type2 Greg Kroah-Hartman
@ 2026-07-30 14:11 ` Greg Kroah-Hartman
2026-07-30 14:11 ` [PATCH 6.18 368/675] drm/amdgpu: fix lifetime issue of amdgpu_vm_get_task_info_pasid() Greg Kroah-Hartman
` (312 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:11 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Kenneth Feng, Yang Wang,
Alex Deucher
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Kenneth Feng <kenneth.feng@amd.com>
commit 18a7826aea6fd09f2d371c02cec70c7234fc4879 upstream.
Disable ASPM on VI if PCIE dpm is disabled.
Fixes: bb00bf17328d ("drm/amd/amdgpu: decouple ASPM with pcie dpm")
Closes: https://gitlab.freedesktop.org/drm/amd/-/work_items/5370
Signed-off-by: Kenneth Feng <kenneth.feng@amd.com>
Reviewed-by: Yang Wang <kevinyang.wang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 873a8d6b3c0a386408c891e4ff1c684fa11783e1)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -1888,7 +1888,8 @@ static bool amdgpu_device_aspm_support_q
* It's unclear if this is a platform-specific or GPU-specific issue.
* Disable ASPM on SI for the time being.
*/
- if (adev->family == AMDGPU_FAMILY_SI)
+ if (adev->family == AMDGPU_FAMILY_SI ||
+ (!(adev->pm.pp_feature & PP_PCIE_DPM_MASK) && adev->family == AMDGPU_FAMILY_VI))
return true;
#if IS_ENABLED(CONFIG_X86)
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 368/675] drm/amdgpu: fix lifetime issue of amdgpu_vm_get_task_info_pasid()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (366 preceding siblings ...)
2026-07-30 14:11 ` [PATCH 6.18 367/675] drm/amd/amdgpu: disable ASPM on VI if pcie dpm is disabled Greg Kroah-Hartman
@ 2026-07-30 14:11 ` Greg Kroah-Hartman
2026-07-30 14:11 ` [PATCH 6.18 369/675] drm/i915/gem: Do not leak siblings[] on proto context error Greg Kroah-Hartman
` (311 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:11 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Shahyan Soltani,
Christian König, Alex Deucher
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Shahyan Soltani <shahyan.soltani@amd.com>
commit 04cc4aa3617b0ed67e859f91f09de5d896a46f3a upstream.
The vm pointer returned from amdgpu_vm_get_vm_from_pasid() is only
valid while the lock is still being held. Once xa_unlock_irqrestore is
called and returned, the pointer is no longer under lock and is subject
to modification. Since, the caller still dereferences vm->task_info in
amdgpu_vm_get_task_info_vm() after the lock is removed, this causes a
use after unlock problem.
Remove the lifetime issue present in amdgpu_vm_get_task_info_pasid()
through removing the amdgpu_vm_get_vm_from_pasid() function from
amdgpu_vm.c and making the relevant code inline to hold the lock while
it is still in use.
Signed-off-by: Shahyan Soltani <shahyan.soltani@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 9d01579f3f868b333acc901815972685989092c7)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 25 ++++++++++---------------
1 file changed, 10 insertions(+), 15 deletions(-)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
@@ -2453,19 +2453,6 @@ static void amdgpu_vm_destroy_task_info(
kfree(ti);
}
-static inline struct amdgpu_vm *
-amdgpu_vm_get_vm_from_pasid(struct amdgpu_device *adev, u32 pasid)
-{
- struct amdgpu_vm *vm;
- unsigned long flags;
-
- xa_lock_irqsave(&adev->vm_manager.pasids, flags);
- vm = xa_load(&adev->vm_manager.pasids, pasid);
- xa_unlock_irqrestore(&adev->vm_manager.pasids, flags);
-
- return vm;
-}
-
/**
* amdgpu_vm_put_task_info - reference down the vm task_info ptr
*
@@ -2512,8 +2499,16 @@ amdgpu_vm_get_task_info_vm(struct amdgpu
struct amdgpu_task_info *
amdgpu_vm_get_task_info_pasid(struct amdgpu_device *adev, u32 pasid)
{
- return amdgpu_vm_get_task_info_vm(
- amdgpu_vm_get_vm_from_pasid(adev, pasid));
+ struct amdgpu_task_info *ti;
+ struct amdgpu_vm *vm;
+ unsigned long flags;
+
+ xa_lock_irqsave(&adev->vm_manager.pasids, flags);
+ vm = xa_load(&adev->vm_manager.pasids, pasid);
+ ti = amdgpu_vm_get_task_info_vm(vm);
+ xa_unlock_irqrestore(&adev->vm_manager.pasids, flags);
+
+ return ti;
}
static int amdgpu_vm_create_task_info(struct amdgpu_vm *vm)
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 369/675] drm/i915/gem: Do not leak siblings[] on proto context error
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (367 preceding siblings ...)
2026-07-30 14:11 ` [PATCH 6.18 368/675] drm/amdgpu: fix lifetime issue of amdgpu_vm_get_task_info_pasid() Greg Kroah-Hartman
@ 2026-07-30 14:11 ` Greg Kroah-Hartman
2026-07-30 14:11 ` [PATCH 6.18 370/675] drm/i915/gem: Fix NULL deref in I915_CONTEXT_PARAM_SSEU Greg Kroah-Hartman
` (310 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:11 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Martin Hodo, Faith Ekstrand,
Simona Vetter, Tvrtko Ursulin, Maarten Lankhorst, Joonas Lahtinen,
Tvrtko Ursulin, Rodrigo Vivi
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
commit eed3de2acf6aa5154d49098b026710b646db67ee upstream.
After a successful BALANCE/PARALLEL_SUBMIT extension on context
creation, error during processing of next user extension leaks
the siblings[] array. Fix that.
Discovered using AI-assisted static analysis confirmed by
Intel Product Security.
Reported-by: Martin Hodo <martin.hodo@intel.com>
Fixes: d4433c7600f7 ("drm/i915/gem: Use the proto-context to handle create parameters (v5)")
Cc: Faith Ekstrand <faith.ekstrand@collabora.com>
Cc: Simona Vetter <simona.vetter@ffwll.ch>
Cc: Tvrtko Ursulin <tvrtko.ursulin@igalia.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: <stable@vger.kernel.org> # v5.15+
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Tvrtko Ursulin <tursulin@ursulin.net>
Link: https://lore.kernel.org/r/20260701073030.44850-1-joonas.lahtinen@linux.intel.com
(cherry picked from commit aa65e0a4b51b3b54b53e4142aaa2d997aa1061ff)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/i915/gem/i915_gem_context.c | 22 ++++++++++++++--------
1 file changed, 14 insertions(+), 8 deletions(-)
--- a/drivers/gpu/drm/i915/gem/i915_gem_context.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c
@@ -770,8 +770,8 @@ static int set_proto_ctx_engines(struct
struct intel_engine_cs *engine;
if (copy_from_user(&ci, &user->engines[n], sizeof(ci))) {
- kfree(set.engines);
- return -EFAULT;
+ err = -EFAULT;
+ goto err;
}
memset(&set.engines[n], 0, sizeof(set.engines[n]));
@@ -787,8 +787,8 @@ static int set_proto_ctx_engines(struct
drm_dbg(&i915->drm,
"Invalid engine[%d]: { class:%d, instance:%d }\n",
n, ci.engine_class, ci.engine_instance);
- kfree(set.engines);
- return -ENOENT;
+ err = -ENOENT;
+ goto err;
}
set.engines[n].type = I915_GEM_ENGINE_TYPE_PHYSICAL;
@@ -801,15 +801,21 @@ static int set_proto_ctx_engines(struct
set_proto_ctx_engines_extensions,
ARRAY_SIZE(set_proto_ctx_engines_extensions),
&set);
- if (err) {
- kfree(set.engines);
- return err;
- }
+ if (err)
+ goto err_extensions;
pc->num_user_engines = set.num_engines;
pc->user_engines = set.engines;
return 0;
+
+err_extensions:
+ for (n = 0; n < set.num_engines; n++)
+ kfree(set.engines[n].siblings);
+err:
+ kfree(set.engines);
+
+ return err;
}
static int set_proto_ctx_sseu(struct drm_i915_file_private *fpriv,
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 370/675] drm/i915/gem: Fix NULL deref in I915_CONTEXT_PARAM_SSEU
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (368 preceding siblings ...)
2026-07-30 14:11 ` [PATCH 6.18 369/675] drm/i915/gem: Do not leak siblings[] on proto context error Greg Kroah-Hartman
@ 2026-07-30 14:11 ` Greg Kroah-Hartman
2026-07-30 14:11 ` [PATCH 6.18 371/675] drm/i915/mst: limit DP MST ESI service loop Greg Kroah-Hartman
` (309 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:11 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Martin Hodo, Faith Ekstrand,
Simona Vetter, Tvrtko Ursulin, Maarten Lankhorst, Joonas Lahtinen,
Andi Shyti, Rodrigo Vivi
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
commit 2b56757a9a7456825eb668fde92299e01c5e2721 upstream.
Setting context engine slot N into I915_ENGINE_CLASS_INVALID /
I915_ENGINE_CLASS_INVALID_NONE and attempting to apply
I915_CONTEXT_PARAM_SSEU to the same slot N will deref NULL.
Fix that.
Discovered using AI-assisted static analysis confirmed by
Intel Product Security.
Reported-by: Martin Hodo <martin.hodo@intel.com>
Fixes: d4433c7600f7 ("drm/i915/gem: Use the proto-context to handle create parameters (v5)")
Cc: Faith Ekstrand <faith.ekstrand@collabora.com>
Cc: Simona Vetter <simona.vetter@ffwll.ch>
Cc: Tvrtko Ursulin <tvrtko.ursulin@igalia.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: <stable@vger.kernel.org> # v5.15+
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com>
Link: https://patch.msgid.link/20260701075555.52142-1-joonas.lahtinen@linux.intel.com
(cherry picked from commit 36eda5b5c2d40da41cc0a5403c26986237cf9e87)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/i915/gem/i915_gem_context.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/gpu/drm/i915/gem/i915_gem_context.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c
@@ -857,7 +857,7 @@ static int set_proto_ctx_sseu(struct drm
pe = &pc->user_engines[idx];
/* Only render engine supports RPCS configuration. */
- if (pe->engine->class != RENDER_CLASS)
+ if (!pe->engine || pe->engine->class != RENDER_CLASS)
return -EINVAL;
sseu = &pe->sseu;
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 371/675] drm/i915/mst: limit DP MST ESI service loop
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (369 preceding siblings ...)
2026-07-30 14:11 ` [PATCH 6.18 370/675] drm/i915/gem: Fix NULL deref in I915_CONTEXT_PARAM_SSEU Greg Kroah-Hartman
@ 2026-07-30 14:11 ` Greg Kroah-Hartman
2026-07-30 14:11 ` [PATCH 6.18 372/675] drm/amd/pm: fix smu14 power limit range calculation Greg Kroah-Hartman
` (308 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:11 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Martin Hodo, Ville Syrjälä,
Imre Deak, Jani Nikula, Rodrigo Vivi
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jani Nikula <jani.nikula@intel.com>
commit 005771c18c5b2c98cb4e7517661aea460990fd3f upstream.
The loop in intel_dp_check_mst_status() keeps servicing interrupts
originating from the sink without bound. Add an upper bound to the new
interrupts occurring during interrupt processing to not get stuck on
potentially stuck sink devices. Use arbitrary 32 tries to clear incoming
interrupts in one go.
Discovered using AI-assisted static analysis confirmed by Intel Product
Security.
Note: The condition likely pre-dates the commit in the Fixes: tag, but
this is about as far back as a backport has any chance of
succeeding. Before that, the retry had a goto.
Reported-by: Martin Hodo <martin.hodo@intel.com>
Fixes: 3c0ec2c2d594 ("drm/i915: Flatten intel_dp_check_mst_status() a bit")
Cc: stable@vger.kernel.org # v5.8+
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Imre Deak <imre.deak@intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Link: https://patch.msgid.link/20260625142204.1078287-1-jani.nikula@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
(cherry picked from commit b4ea5272133059acb493cc36599071a9e852ec2e)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/i915/display/intel_dp.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -5203,8 +5203,9 @@ intel_dp_check_mst_status(struct intel_d
struct intel_encoder *encoder = &dig_port->base;
bool link_ok = true;
bool reprobe_needed = false;
+ int tries = 33;
- for (;;) {
+ while (--tries) {
u8 esi[4] = {};
u8 ack[4] = {};
@@ -5247,6 +5248,11 @@ intel_dp_check_mst_status(struct intel_d
if (!link_ok || intel_dp->link.force_retrain)
intel_encoder_link_check_queue_work(encoder, 0);
+ if (!tries) {
+ drm_dbg_kms(display->drm, "DPRX ESI not clearing, device may be stuck\n");
+ reprobe_needed = true;
+ }
+
return !reprobe_needed;
}
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 372/675] drm/amd/pm: fix smu14 power limit range calculation
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (370 preceding siblings ...)
2026-07-30 14:11 ` [PATCH 6.18 371/675] drm/i915/mst: limit DP MST ESI service loop Greg Kroah-Hartman
@ 2026-07-30 14:11 ` Greg Kroah-Hartman
2026-07-30 14:11 ` [PATCH 6.18 373/675] drm/gfx10: Program DB_RING_CONTROL Greg Kroah-Hartman
` (307 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:11 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Yang Wang, Kenneth Feng,
Alex Deucher
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Yang Wang <kevinyang.wang@amd.com>
commit e987eabc02646920cd13ab75902693e99735eca0 upstream.
SMU14 derives the default PPT limit from SocketPowerLimitAc/Dc, but
MsgLimits.Power may expose a different firmware limit for the same PPT0
throttler. Using those values independently as fixed min/max bases can
report an incorrect configurable power range.
Keep the socket power limit as the default value and as the fallback for
current-limit queries. Calculate the reported range from both firmware
values instead, using the lower value as the minimum base and the higher
value as the maximum base before applying OD percentages.
Signed-off-by: Yang Wang <kevinyang.wang@amd.com>
Reviewed-by: Kenneth Feng <kenneth.feng@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit c936b8126b444401318fcbeb1828488cc5312dee)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/pm/swsmu/smu14/smu_v14_0_2_ppt.c | 28 ++++++++++---------
1 file changed, 16 insertions(+), 12 deletions(-)
--- a/drivers/gpu/drm/amd/pm/swsmu/smu14/smu_v14_0_2_ppt.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu14/smu_v14_0_2_ppt.c
@@ -1701,19 +1701,23 @@ static int smu_v14_0_2_get_power_limit(s
table_context->power_play_table;
PPTable_t *pptable = table_context->driver_pptable;
CustomSkuTable_t *skutable = &pptable->CustomSkuTable;
- int16_t od_percent_upper = 0, od_percent_lower = 0;
+ uint32_t pp_limit = smu->adev->pm.ac_power ?
+ skutable->SocketPowerLimitAc[PPT_THROTTLER_PPT0] :
+ skutable->SocketPowerLimitDc[PPT_THROTTLER_PPT0];
uint32_t msg_limit = pptable->SkuTable.MsgLimits.Power[PPT_THROTTLER_PPT0][POWER_SOURCE_AC];
- uint32_t power_limit;
+ uint32_t min_limit = min_t(uint32_t, pp_limit, msg_limit);
+ uint32_t max_limit = max_t(uint32_t, pp_limit, msg_limit);
+ int16_t od_percent_upper = 0, od_percent_lower = 0;
+ int ret;
- if (smu_v14_0_get_current_power_limit(smu, &power_limit))
- power_limit = smu->adev->pm.ac_power ?
- skutable->SocketPowerLimitAc[PPT_THROTTLER_PPT0] :
- skutable->SocketPowerLimitDc[PPT_THROTTLER_PPT0];
+ if (current_power_limit) {
+ ret = smu_v14_0_get_current_power_limit(smu, current_power_limit);
+ if (ret)
+ *current_power_limit = pp_limit;
+ }
- if (current_power_limit)
- *current_power_limit = power_limit;
if (default_power_limit)
- *default_power_limit = power_limit;
+ *default_power_limit = pp_limit;
if (powerplay_table) {
if (smu->od_enabled &&
@@ -1727,15 +1731,15 @@ static int smu_v14_0_2_get_power_limit(s
}
dev_dbg(smu->adev->dev, "od percent upper:%d, od percent lower:%d (default power: %d)\n",
- od_percent_upper, od_percent_lower, power_limit);
+ od_percent_upper, od_percent_lower, pp_limit);
if (max_power_limit) {
- *max_power_limit = msg_limit * (100 + od_percent_upper);
+ *max_power_limit = max_limit * (100 + od_percent_upper);
*max_power_limit /= 100;
}
if (min_power_limit) {
- *min_power_limit = power_limit * (100 + od_percent_lower);
+ *min_power_limit = min_limit * (100 + od_percent_lower);
*min_power_limit /= 100;
}
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 373/675] drm/gfx10: Program DB_RING_CONTROL
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (371 preceding siblings ...)
2026-07-30 14:11 ` [PATCH 6.18 372/675] drm/amd/pm: fix smu14 power limit range calculation Greg Kroah-Hartman
@ 2026-07-30 14:11 ` Greg Kroah-Hartman
2026-07-30 14:11 ` [PATCH 6.18 374/675] drm/virtio: Dont detach GEM from a non-created context Greg Kroah-Hartman
` (306 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:11 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Timur Kristóf, Alex Deucher
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Alex Deucher <alexander.deucher@amd.com>
commit f0262c3a3f14d60140f6b826d40d44edf62c36d6 upstream.
This is needed to allocate occlusion counters across
both gfx pipes.
Fixes: b7a1a0ef12b8 ("drm/amd/amdgpu: add pipe1 hardware support")
Reviewed-by: Timur Kristóf <timur.kristof@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 6807352cbabb74b61ba42888769283af72191f66)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c | 9 +++++++++
1 file changed, 9 insertions(+)
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
@@ -5349,6 +5349,15 @@ static void gfx_v10_0_constants_init(str
gfx_v10_0_get_tcc_info(adev);
adev->gfx.config.pa_sc_tile_steering_override =
gfx_v10_0_init_pa_sc_tile_steering_override(adev);
+ /* Program DB_RING_CONTROL for multiple GFX pipes
+ * Default power up value is 1.
+ * Possible values:
+ * 0 - split occlusion counters between gfx pipes
+ * 1 - all occlusion counters to pipe 0
+ * 2 - all occlusion counters to pipe 1
+ */
+ WREG32_FIELD15(GC, 0, DB_RING_CONTROL, COUNTER_CONTROL,
+ (adev->gfx.me.num_pipe_per_me > 1) ? 0 : 1);
/* XXX SH_MEM regs */
/* where to put LDS, scratch, GPUVM in FSA64 space */
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 374/675] drm/virtio: Dont detach GEM from a non-created context
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (372 preceding siblings ...)
2026-07-30 14:11 ` [PATCH 6.18 373/675] drm/gfx10: Program DB_RING_CONTROL Greg Kroah-Hartman
@ 2026-07-30 14:11 ` Greg Kroah-Hartman
2026-07-30 14:11 ` [PATCH 6.18 375/675] drm/ttm: Account for NULL and handle pages in ttm_pool_backup Greg Kroah-Hartman
` (305 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:11 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Jason Macnak, Dmitry Osipenko
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jason Macnak <natsu@google.com>
commit d489a5305b9d5480d6fb97d5636f5f4b1e0b3827 upstream.
Applies the same treatment as commit 7cf6dd467e87 ("drm/virtio:
Don't attach GEM to a non-created context in gem_object_open()")
to virtio_gpu_gem_object_close() to avoid trying to detach
a resource that was never attached due to a context
never being created when context_init is supported.
Fixes: 086b9f27f0ab ("drm/virtio: Don't create a context with default param if context_init is supported")
Cc: <stable@vger.kernel.org> # v6.14+
Signed-off-by: Jason Macnak <natsu@google.com>
Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Link: https://patch.msgid.link/20260625170828.3335431-1-natsu@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/virtio/virtgpu_gem.c | 14 ++++++++------
1 file changed, 8 insertions(+), 6 deletions(-)
--- a/drivers/gpu/drm/virtio/virtgpu_gem.c
+++ b/drivers/gpu/drm/virtio/virtgpu_gem.c
@@ -139,13 +139,15 @@ void virtio_gpu_gem_object_close(struct
if (!vgdev->has_virgl_3d)
return;
- objs = virtio_gpu_array_alloc(1);
- if (!objs)
- return;
- virtio_gpu_array_add_obj(objs, obj);
+ if (vfpriv->context_created) {
+ objs = virtio_gpu_array_alloc(1);
+ if (!objs)
+ return;
+ virtio_gpu_array_add_obj(objs, obj);
- virtio_gpu_cmd_context_detach_resource(vgdev, vfpriv->ctx_id,
- objs);
+ virtio_gpu_cmd_context_detach_resource(vgdev, vfpriv->ctx_id,
+ objs);
+ }
virtio_gpu_notify(vgdev);
}
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 375/675] drm/ttm: Account for NULL and handle pages in ttm_pool_backup
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (373 preceding siblings ...)
2026-07-30 14:11 ` [PATCH 6.18 374/675] drm/virtio: Dont detach GEM from a non-created context Greg Kroah-Hartman
@ 2026-07-30 14:11 ` Greg Kroah-Hartman
2026-07-30 14:11 ` [PATCH 6.18 376/675] drm/panthor: return error on truncated firmware Greg Kroah-Hartman
` (304 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:11 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Christian Koenig, Huang Rui,
Matthew Auld, Matthew Brost, Maarten Lankhorst, Maxime Ripard,
Thomas Zimmermann, David Airlie, Simona Vetter,
Thomas Hellström, dri-devel, linux-kernel
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Matthew Brost <matthew.brost@intel.com>
commit 5b7b3b6595ee77d01c7463757baed114786094dd upstream.
Pages in ttm_pool_backup can be NULL or backup handles
(ttm_backup_page_ptr_is_handle()), neither of which can be passed to
set_pages_array_wb() or freed. Add a dedicated WB pass before the
dma/purge loop that walks allocations using the same i += num_pages
stride, skipping NULL and handle entries, and calls set_pages_array_wb()
once per contiguous run of real pages. Apply the same NULL/handle guard
to the dma/purge loop.
Fixes the following oops:
Oops: general protection fault, kernel NULL pointer dereference 0x0: 0000 [#1] SMP NOPTI
RIP: 0010:__cpa_process_fault+0xf8/0x770
RSP: 0018:ffffc90000a87718 EFLAGS: 00010287
RAX: 0000000000000000 RBX: ffffc90000a87868 RCX: 0000000000000000
RDX: 0000000000001000 RSI: 0005088000000000 RDI: ffffffff827c5f34
RBP: 0005088000000000 R08: ffffc90000a877cb R09: ffffc90000a877d0
R10: 0000000000000000 R11: 000000000000001b R12: 000ffffffffff000
R13: ffffc90000a87868 R14: ffffc90000a87868 R15: ffff88815b882ae0
FS: 0000000000000000(0000) GS:ffff8884ec840000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f930b844000 CR3: 000000000262e003 CR4: 0000000008f70ef0
PKRU: 55555554
Call Trace:
<TASK>
__change_page_attr_set_clr+0x989/0xe90
? __purge_vmap_area_lazy+0x6c/0x3a0
? _vm_unmap_aliases+0x250/0x2a0
set_pages_array_wb+0x7f/0x120
ttm_pool_backup+0x4c9/0x5b0 [ttm]
? dma_resv_wait_timeout+0x3b/0xf0
ttm_tt_backup+0x32/0x60 [ttm]
ttm_bo_shrink+0x66/0x110 [ttm]
xe_bo_shrink_purge+0x12b/0x1b0 [xe]
xe_bo_shrink+0xbb/0x270 [xe]
__xe_shrinker_walk+0xf7/0x160 [xe]
xe_shrinker_walk+0x9d/0xc0 [xe]
xe_shrinker_scan+0x11f/0x210 [xe]
do_shrink_slab+0x13b/0x270
shrink_slab+0xf1/0x400
shrink_node+0x352/0x8a0
balance_pgdat+0x32c/0x700
kswapd+0x205/0x2f0
? __pfx_autoremove_wake_function+0x10/0x10
? __pfx_kswapd+0x10/0x10
kthread+0xd1/0x110
? __pfx_kthread+0x10/0x10
ret_from_fork+0x1b1/0x200
? __pfx_kthread+0x10/0x10
ret_from_fork_asm+0x1a/0x30
</TASK>
Cc: Christian Koenig <christian.koenig@amd.com>
Cc: Huang Rui <ray.huang@amd.com>
Cc: Matthew Auld <matthew.auld@intel.com>
Cc: Matthew Brost <matthew.brost@intel.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maxime Ripard <mripard@kernel.org>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: David Airlie <airlied@gmail.com>
Cc: Simona Vetter <simona@ffwll.ch>
Cc: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Cc: dri-devel@lists.freedesktop.org
Cc: linux-kernel@vger.kernel.org
Cc: stable@vger.kernel.org
Fixes: b63d715b8090 ("drm/ttm/pool, drm/ttm/tt: Provide a helper to shrink pages")
Cc: stable@vger.kernel.org
Assisted-by: GitHub_Copilot:claude-opus-4.8
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Link: https://patch.msgid.link/20260702214815.4009271-1-matthew.brost@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/ttm/ttm_pool.c | 34 ++++++++++++++++++++++++++++++----
1 file changed, 30 insertions(+), 4 deletions(-)
--- a/drivers/gpu/drm/ttm/ttm_pool.c
+++ b/drivers/gpu/drm/ttm/ttm_pool.c
@@ -981,9 +981,31 @@ long ttm_pool_backup(struct ttm_pool *po
return -EBUSY;
#ifdef CONFIG_X86
- /* Anything returned to the system needs to be cached. */
- if (tt->caching != ttm_cached)
- set_pages_array_wb(tt->pages, tt->num_pages);
+ /* Anything returned to the system needs to be cached. Walk allocations
+ * skipping NULL pages and issue set_pages_array_wb() per contiguous run.
+ */
+ if (tt->caching != ttm_cached) {
+ pgoff_t run_start = 0, run_count = 0;
+
+ for (i = 0; i < tt->num_pages; i += num_pages) {
+ page = tt->pages[i];
+ if (unlikely(!page || ttm_backup_page_ptr_is_handle(page))) {
+ if (run_count) {
+ set_pages_array_wb(&tt->pages[run_start],
+ run_count);
+ run_count = 0;
+ }
+ num_pages = 1;
+ continue;
+ }
+ num_pages = 1UL << ttm_pool_page_order(pool, page);
+ if (!run_count)
+ run_start = i;
+ run_count += num_pages;
+ }
+ if (run_count)
+ set_pages_array_wb(&tt->pages[run_start], run_count);
+ }
#endif
if (tt->dma_address || flags->purge) {
@@ -991,7 +1013,7 @@ long ttm_pool_backup(struct ttm_pool *po
unsigned int order;
page = tt->pages[i];
- if (unlikely(!page)) {
+ if (unlikely(!page || ttm_backup_page_ptr_is_handle(page))) {
num_pages = 1;
continue;
}
@@ -1034,6 +1056,10 @@ long ttm_pool_backup(struct ttm_pool *po
if (unlikely(!page))
continue;
+ /* Already-handled entry from a previous attempt. */
+ if (unlikely(ttm_backup_page_ptr_is_handle(page)))
+ continue;
+
ttm_pool_split_for_swap(pool, page);
shandle = ttm_backup_backup_page(backup, page, flags->writeback, i,
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 376/675] drm/panthor: return error on truncated firmware
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (374 preceding siblings ...)
2026-07-30 14:11 ` [PATCH 6.18 375/675] drm/ttm: Account for NULL and handle pages in ttm_pool_backup Greg Kroah-Hartman
@ 2026-07-30 14:11 ` Greg Kroah-Hartman
2026-07-30 14:11 ` [PATCH 6.18 377/675] drm/amdgpu: Release VFCT ACPI table reference Greg Kroah-Hartman
` (303 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:11 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Osama Abdelkader, Liviu Dudau,
Boris Brezillon
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Osama Abdelkader <osama.abdelkader@gmail.com>
commit 4a2c8cbe9bcba170706fdf08b1c84b6cbcf5b044 upstream.
panthor_fw_load() detects truncated firmware images, but jumps to the
common cleanup path without setting ret. If no previous error was recorded,
the function can return 0 and treat the invalid firmware as successfully
loaded.
Set ret to -EINVAL before leaving the truncated-image path.
Fixes: 2718d91816ee ("drm/panthor: Add the FW logical block")
Cc: stable@vger.kernel.org
Signed-off-by: Osama Abdelkader <osama.abdelkader@gmail.com>
Reviewed-by: Liviu Dudau <liviu.dudau@arm.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Link: https://patch.msgid.link/20260714163056.22329-1-osama.abdelkader@gmail.com
Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/panthor/panthor_fw.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/gpu/drm/panthor/panthor_fw.c
+++ b/drivers/gpu/drm/panthor/panthor_fw.c
@@ -777,6 +777,7 @@ static int panthor_fw_load(struct pantho
}
if (hdr.size > iter.size) {
+ ret = -EINVAL;
drm_err(&ptdev->base, "Firmware image is truncated\n");
goto out;
}
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 377/675] drm/amdgpu: Release VFCT ACPI table reference
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (375 preceding siblings ...)
2026-07-30 14:11 ` [PATCH 6.18 376/675] drm/panthor: return error on truncated firmware Greg Kroah-Hartman
@ 2026-07-30 14:11 ` Greg Kroah-Hartman
2026-07-30 14:11 ` [PATCH 6.18 378/675] drm/amdgpu: Fix VFCT bus number matching with soft filter Greg Kroah-Hartman
` (302 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:11 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Alex Deucher, Mario Limonciello
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Mario Limonciello <mario.limonciello@amd.com>
commit 65bff26617607c1331283232016c0e89088c5b78 upstream.
amdgpu_acpi_vfct_bios() fetches the VFCT table with acpi_get_table()
but never releases it. acpi_get_table() takes a reference on the
table (incrementing its validation_count and mapping it on the 0->1
transition); without a paired acpi_put_table() the mapping is leaked
on every call, whether or not a matching VBIOS image is found.
Route all exit paths after the table is acquired through a common
acpi_put_table(). The VBIOS image is copied out with kmemdup() before
the table is released, so it remains valid for the caller.
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Link: https://patch.msgid.link/20260708193518.702584-3-mario.limonciello@amd.com
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit ca5988682b4cba4cd125a0fa99b2de1239164ae4)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c | 17 +++++++++++------
1 file changed, 11 insertions(+), 6 deletions(-)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c
@@ -361,13 +361,14 @@ static bool amdgpu_acpi_vfct_bios(struct
acpi_size tbl_size;
UEFI_ACPI_VFCT *vfct;
unsigned int offset;
+ bool r = false;
if (!ACPI_SUCCESS(acpi_get_table("VFCT", 1, &hdr)))
return false;
tbl_size = hdr->length;
if (tbl_size < sizeof(UEFI_ACPI_VFCT)) {
dev_info(adev->dev, "ACPI VFCT table present but broken (too short #1),skipping\n");
- return false;
+ goto out;
}
vfct = (UEFI_ACPI_VFCT *)hdr;
@@ -380,13 +381,13 @@ static bool amdgpu_acpi_vfct_bios(struct
offset += sizeof(VFCT_IMAGE_HEADER);
if (offset > tbl_size) {
dev_info(adev->dev, "ACPI VFCT image header truncated,skipping\n");
- return false;
+ goto out;
}
offset += vhdr->ImageLength;
if (offset > tbl_size) {
dev_info(adev->dev, "ACPI VFCT image truncated,skipping\n");
- return false;
+ goto out;
}
if (vhdr->ImageLength &&
@@ -401,15 +402,19 @@ static bool amdgpu_acpi_vfct_bios(struct
if (!check_atom_bios(adev, vhdr->ImageLength)) {
amdgpu_bios_release(adev);
- return false;
+ goto out;
}
adev->bios_size = vhdr->ImageLength;
- return true;
+ r = true;
+ goto out;
}
}
dev_info(adev->dev, "ACPI VFCT table present but broken (too short #2),skipping\n");
- return false;
+
+out:
+ acpi_put_table(hdr);
+ return r;
}
#else
static inline bool amdgpu_acpi_vfct_bios(struct amdgpu_device *adev)
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 378/675] drm/amdgpu: Fix VFCT bus number matching with soft filter
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (376 preceding siblings ...)
2026-07-30 14:11 ` [PATCH 6.18 377/675] drm/amdgpu: Release VFCT ACPI table reference Greg Kroah-Hartman
@ 2026-07-30 14:11 ` Greg Kroah-Hartman
2026-07-30 14:11 ` [PATCH 6.18 379/675] drm/amd/pm/ci: Dont disable MCLK DPM on Bonaire 0x6658 (R7 260X) Greg Kroah-Hartman
` (301 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:11 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Oz Tiram, Alex Deucher,
Mario Limonciello
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Mario Limonciello <mario.limonciello@amd.com>
commit db7e8108809a2245f0a17ba323f027cac0941ffb upstream.
On systems where PCI bus renumbering occurs (e.g. pci=realloc,
resource conflicts), the runtime bus number may differ from the
BIOS POST bus number recorded in the VFCT table. This causes
amdgpu_acpi_vfct_bios() to fail finding the VBIOS even though
the correct device entry exists.
Introduce amdgpu_acpi_vfct_match() which treats the bus number
as a soft filter: vendor/device/function identity is the hard
requirement, while exact bus match is the preferred path. When
bus numbers disagree but device identity matches, accept the
VFCT entry and log a dev_notice for diagnostics.
Reported-by: Oz Tiram <oz@shift-computing.de>
Closes: https://lore.kernel.org/amd-gfx/20260621173211.28443-1-oz@shift-computing.de/
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Link: https://patch.msgid.link/20260708193518.702584-2-mario.limonciello@amd.com
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 11c141672045ffc0187aa604f2c0f597bc334fb2)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c | 45 +++++++++++++++++++++++++++----
1 file changed, 40 insertions(+), 5 deletions(-)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c
@@ -355,6 +355,45 @@ static bool amdgpu_read_disabled_bios(st
}
#ifdef CONFIG_ACPI
+/**
+ * amdgpu_acpi_vfct_match() - Check if a VFCT entry matches the device
+ * @adev: AMDGPU device
+ * @vhdr: VFCT image header to check
+ *
+ * VFCT entries contain the PCI bus number as recorded during BIOS POST.
+ * On systems where the kernel renumbers PCI buses (e.g. pci=realloc or
+ * resource conflicts), the runtime bus number may differ from the POST
+ * value. Match by device identity (vendor + device + function) and use
+ * the bus number as a preference: exact bus match is preferred, but when
+ * the bus numbers disagree we accept the entry if the device identity
+ * matches.
+ *
+ * Returns: 0 on match, -ENODEV on no match
+ */
+static int amdgpu_acpi_vfct_match(struct amdgpu_device *adev,
+ VFCT_IMAGE_HEADER *vhdr)
+{
+ /* Vendor and device IDs must always match */
+ if (vhdr->VendorID != adev->pdev->vendor ||
+ vhdr->DeviceID != adev->pdev->device)
+ return -ENODEV;
+
+ if (vhdr->PCIDevice != PCI_SLOT(adev->pdev->devfn) ||
+ vhdr->PCIFunction != PCI_FUNC(adev->pdev->devfn))
+ return -ENODEV;
+
+ /* Exact bus number match - preferred */
+ if (vhdr->PCIBus == adev->pdev->bus->number)
+ return 0;
+
+ /* Bus mismatch but device identity matches (PCI renumbering case) */
+ dev_notice(adev->dev,
+ "VFCT bus number mismatch: table %u != runtime %u, matching by device identity (vendor 0x%04x device 0x%04x)\n",
+ vhdr->PCIBus, adev->pdev->bus->number,
+ adev->pdev->vendor, adev->pdev->device);
+ return 0;
+}
+
static bool amdgpu_acpi_vfct_bios(struct amdgpu_device *adev)
{
struct acpi_table_header *hdr;
@@ -391,11 +430,7 @@ static bool amdgpu_acpi_vfct_bios(struct
}
if (vhdr->ImageLength &&
- vhdr->PCIBus == adev->pdev->bus->number &&
- vhdr->PCIDevice == PCI_SLOT(adev->pdev->devfn) &&
- vhdr->PCIFunction == PCI_FUNC(adev->pdev->devfn) &&
- vhdr->VendorID == adev->pdev->vendor &&
- vhdr->DeviceID == adev->pdev->device) {
+ !amdgpu_acpi_vfct_match(adev, vhdr)) {
adev->bios = kmemdup(&vbios->VbiosContent,
vhdr->ImageLength,
GFP_KERNEL);
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 379/675] drm/amd/pm/ci: Dont disable MCLK DPM on Bonaire 0x6658 (R7 260X)
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (377 preceding siblings ...)
2026-07-30 14:11 ` [PATCH 6.18 378/675] drm/amdgpu: Fix VFCT bus number matching with soft filter Greg Kroah-Hartman
@ 2026-07-30 14:11 ` Greg Kroah-Hartman
2026-07-30 14:11 ` [PATCH 6.18 380/675] drm/amd/display: set new_stream to NULL after release Greg Kroah-Hartman
` (300 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:11 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Timur Kristóf, Alex Deucher
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Timur Kristóf <timur.kristof@gmail.com>
commit 85371c5ef502d10add72eab38711e191dccea981 upstream.
The old radeon driver has a documented workaround in ci_dpm.c
which claims that Bonaire 0x6658 with old memory controller
firmware is unstable with MCLK DPM, so as a precaution I
disabled MCLK DPM on this ASIC in amdgpu.
Note that the old MC firmware is not actually used with
amdgpu, but in theory it's possible that the VBIOS sets
up the ASIC with an old MC firmware that is already running
when amdgpu initializes (in which case amdgpu doesn't
load its own firmware).
What I expected to happen is that the GPU would simply use
its maximum memory clock, and indeed this is what seemed
to happen according to amdgpu_pm_info which reads the
current MCLK value from the SMU.
However, some users reported a huge perf regression
and upon a closer look it seems that the GPU seems to
not actually use the highest MCLK value, despite the SMU
reporting that it does.
Let's not disable MCLK DPM on Bonaire 0x6658 (R7 260X).
Keep MCLK DPM disabled on R9 M380 in the 2015 iMac
because that still hangs if we enable it.
Fixes: 9851f29cb06c ("drm/amd/pm/ci: Disable MCLK DPM on problematic CI ASICs")
Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit d34acad064ee7d82bd18f5d87592c422d4d323ac)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/pm/powerplay/hwmgr/hwmgr.c | 7 ++-----
1 file changed, 2 insertions(+), 5 deletions(-)
--- a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/hwmgr.c
+++ b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/hwmgr.c
@@ -106,11 +106,8 @@ int hwmgr_early_init(struct pp_hwmgr *hw
hwmgr->od_enabled = false;
switch (hwmgr->chip_id) {
case CHIP_BONAIRE:
- /* R9 M380 in iMac 2015: SMU hangs when enabling MCLK DPM
- * R7 260X cards with old MC ucode: MCLK DPM is unstable
- */
- if (adev->pdev->subsystem_vendor == 0x106B ||
- adev->pdev->device == 0x6658) {
+ /* R9 M380 in iMac 2015: SMU hangs when enabling MCLK DPM */
+ if (adev->pdev->subsystem_vendor == 0x106B) {
dev_info(adev->dev, "disabling MCLK DPM on quirky ASIC");
adev->pm.pp_feature &= ~PP_MCLK_DPM_MASK;
hwmgr->feature_mask &= ~PP_MCLK_DPM_MASK;
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 380/675] drm/amd/display: set new_stream to NULL after release
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (378 preceding siblings ...)
2026-07-30 14:11 ` [PATCH 6.18 379/675] drm/amd/pm/ci: Dont disable MCLK DPM on Bonaire 0x6658 (R7 260X) Greg Kroah-Hartman
@ 2026-07-30 14:11 ` Greg Kroah-Hartman
2026-07-30 14:11 ` [PATCH 6.18 381/675] drm/amd/display: consolidate DCN vblank/flip handling onto vupdate_no_lock Greg Kroah-Hartman
` (299 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:11 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, WenTao Liang, George Zhang,
Alex Deucher
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: WenTao Liang <vulab@iscas.ac.cn>
commit 9fa26b9eed6195bf840f39ac183b9a6237548755 upstream.
In dm_update_crtc_state(), the skip_modeset path releases new_stream
via dc_stream_release() but does not set the pointer to NULL.
If a later error (e.g., color management failure) triggers the fail
label, the error path calls dc_stream_release() again on the same
dangling pointer, causing a double release and potential use-after-free.
Fix this by setting new_stream to NULL after the initial release.
Fixes: 9b690ef3c704 ("drm/amd/display: Avoid full modeset when not required")
Signed-off-by: WenTao Liang <vulab@iscas.ac.cn>
Reviewed-by: George Zhang <george.zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 99f3af19073b3ddbfd96e789124cce12c4277b28)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -11383,6 +11383,7 @@ skip_modeset:
/* Release extra reference */
if (new_stream)
dc_stream_release(new_stream);
+ new_stream = NULL;
/*
* We want to do dc stream updates that do not require a
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 381/675] drm/amd/display: consolidate DCN vblank/flip handling onto vupdate_no_lock
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (379 preceding siblings ...)
2026-07-30 14:11 ` [PATCH 6.18 380/675] drm/amd/display: set new_stream to NULL after release Greg Kroah-Hartman
@ 2026-07-30 14:11 ` Greg Kroah-Hartman
2026-07-30 14:11 ` [PATCH 6.18 382/675] drm/amd/display: dce100: skip non-DP stream encoders for DP MST Greg Kroah-Hartman
` (298 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:11 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Matthew Schwartz,
Mario Limonciello (AMD), Leo Li, Alex Deucher
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Leo Li <sunpeng.li@amd.com>
commit 8382cd234981ae36299bb66a10bac2cd8ff1b99d upstream.
[Why]
On DCN, vblank events were delivered from VSTARTUP/VUPDATE
(dm_crtc_high_irq/dm_vupdate_high_irq) and pageflip completion from
GRPH_PFLIP (dm_pflip_high_irq). These signals can be masked by hardware
by a few things:
* DPG - DCN can Dynamically Power Gate parts of the display pipe when a
self-refresh capable eDP is connected. DPG is engaged when there's
enough static frames (detected through drm_vblank_off). Once gated,
even though the OTG (output timing generator) is still enabled,
VSTARTUP and GRPH_FLIP are masked.
* GSL - Driver can use the Global Sync Lock to block HW from latching
onto double-buffered registers during programming, to prevent HW from
latching onto a partially programmed state. This will mask VSTARTUP,
GRPH_FLIP, and VUPDATE. See dcn20_pipe_control_lock().
* MALL - A DCN accessible cache introduced in DCN32+ DGPUs that can
store fb data to allow for longer DRAM sleep. When scanning out from
MALL, VSTARTUP is masked.
When masked, events are never delivered, which can show up as flip_done
timeouts in the wild.
However, there is an interrupt source on DCN that is never masked:
VUPDATE_NO_LOCK. It's simply an unmasked variant of VUPDATE, which fires
while the OTG is active, at the exact point hardware latches
double-buffered registers. It is therefore the natural single signal for
delivering both vblank and flip-completion events on DCN, and the
correct point to timestamp both VRR and non-VRR vblanks.
DCE's interrupt sources are different, it does not have an unmaskable
VUPDATE_NO_LOCK. The only unmaskable DCE interrupt is VLINE0, but it can
only be programmed as a vline offset from vsync_start, making it
unsuitable for VRR. Thus, we keep DCE untouched and use the existing mix
of interrupt sources.
[How]
For DCN1 and newer only:
* Factor the body of dm_crtc_high_irq() into dm_crtc_high_irq_handler()
and drive it from dm_vupdate_high_irq() (VUPDATE_NO_LOCK). DCE keeps
using dm_crtc_high_irq() (VSTARTUP) and dm_pflip_high_irq()
(GRPH_PFLIP) unchanged.
* Stop registering VSTARTUP (crtc_irq) and GRPH_PFLIP (pageflip_irq) on
DCN, and stop enabling them in amdgpu_dm_crtc_set_vblank() /
manage_dm_interrupts(). Enable VUPDATE whenever vblank is enabled on
DCN (previously only in VRR mode). The secure-display vline0 interrupt
is left untouched.
* VUPDATE_NO_LOCK does not early-fire on an immediate (tearing / async)
flip, since HW latches the new address right away. Deliver the flip
completion event immediately after programming such flips in
amdgpu_dm_commit_planes(), and clear pflip_status so the next vupdate
handler does not double-send.
v2: Do not gate VUPDATE_NO_LOCK on DCN in dm_handle_vrr_transition()
Also toggle VUPDATE_NO_LOCK on DCN in dm_gpureset_toggle_interrupts()
Re-cook vblank event count and timestamp for immediate flips
Fixes: 9b47278cec98 ("drm/amd/display: temp w/a for dGPU to enter idle optimizations")
Link: https://gitlab.freedesktop.org/drm/amd/-/work_items/3787
Link: https://gitlab.freedesktop.org/drm/amd/-/work_items/4141
Assisted-by: Copilot:claude-opus-4.8
Co-developed-by: Matthew Schwartz <matthew.schwartz@linux.dev>
Signed-off-by: Matthew Schwartz <matthew.schwartz@linux.dev>
Tested-by: Mario Limonciello (AMD) <superm1@kernel.org>
Reviewed-by: Mario Limonciello (AMD) <superm1@kernel.org>
Signed-off-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit c87e6635d2db02c88ae8d09529362da672d34770)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 349 +++++++++--------
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crtc.c | 70 ++-
2 files changed, 229 insertions(+), 190 deletions(-)
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -575,89 +575,25 @@ static void schedule_dc_vmin_vmax(struct
queue_work(system_wq, &offload_work->work);
}
-static void dm_vupdate_high_irq(void *interrupt_params)
-{
- struct common_irq_params *irq_params = interrupt_params;
- struct amdgpu_device *adev = irq_params->adev;
- struct amdgpu_crtc *acrtc;
- struct drm_device *drm_dev;
- struct drm_vblank_crtc *vblank;
- ktime_t frame_duration_ns, previous_timestamp;
- unsigned long flags;
- int vrr_active;
-
- acrtc = get_crtc_by_otg_inst(adev, irq_params->irq_src - IRQ_TYPE_VUPDATE);
-
- if (acrtc) {
- vrr_active = amdgpu_dm_crtc_vrr_active_irq(acrtc);
- drm_dev = acrtc->base.dev;
- vblank = drm_crtc_vblank_crtc(&acrtc->base);
- previous_timestamp = atomic64_read(&irq_params->previous_timestamp);
- frame_duration_ns = vblank->time - previous_timestamp;
-
- if (frame_duration_ns > 0) {
- trace_amdgpu_refresh_rate_track(acrtc->base.index,
- frame_duration_ns,
- ktime_divns(NSEC_PER_SEC, frame_duration_ns));
- atomic64_set(&irq_params->previous_timestamp, vblank->time);
- }
-
- drm_dbg_vbl(drm_dev,
- "crtc:%d, vupdate-vrr:%d\n", acrtc->crtc_id,
- vrr_active);
-
- /* Core vblank handling is done here after end of front-porch in
- * vrr mode, as vblank timestamping will give valid results
- * while now done after front-porch. This will also deliver
- * page-flip completion events that have been queued to us
- * if a pageflip happened inside front-porch.
- */
- if (vrr_active && acrtc->dm_irq_params.stream) {
- bool replay_en = acrtc->dm_irq_params.stream->link->replay_settings.replay_feature_enabled;
- bool psr_en = acrtc->dm_irq_params.stream->link->psr_settings.psr_feature_enabled;
- bool fs_active_var_en = acrtc->dm_irq_params.freesync_config.state
- == VRR_STATE_ACTIVE_VARIABLE;
-
- amdgpu_dm_crtc_handle_vblank(acrtc);
-
- /* BTR processing for pre-DCE12 ASICs */
- if (adev->family < AMDGPU_FAMILY_AI) {
- spin_lock_irqsave(&adev_to_drm(adev)->event_lock, flags);
- mod_freesync_handle_v_update(
- adev->dm.freesync_module,
- acrtc->dm_irq_params.stream,
- &acrtc->dm_irq_params.vrr_params);
-
- if (fs_active_var_en || (!fs_active_var_en && !replay_en && !psr_en)) {
- schedule_dc_vmin_vmax(adev,
- acrtc->dm_irq_params.stream,
- &acrtc->dm_irq_params.vrr_params.adjust);
- }
- spin_unlock_irqrestore(&adev_to_drm(adev)->event_lock, flags);
- }
- }
- }
-}
-
/**
- * dm_crtc_high_irq() - Handles CRTC interrupt
- * @interrupt_params: used for determining the CRTC instance
+ * dm_crtc_high_irq_handler() - Common OTG vblank/flip event handling
+ * @adev: amdgpu device
+ * @acrtc: the CRTC to service
*
- * Handles the CRTC/VSYNC interrupt by notfying DRM's VBLANK
- * event handler.
+ * Performs writeback completion, vblank event handling, CRC processing, VRR BTR
+ * updates and pageflip completion delivery.
+ *
+ * On DCN this is driven by VUPDATE_NO_LOCK (the register latch point) from
+ * dm_vupdate_high_irq(); on DCE it is driven by VLINE0 at the start of vblank
+ * from dm_crtc_high_irq().
*/
-static void dm_crtc_high_irq(void *interrupt_params)
+static void dm_crtc_high_irq_handler(struct amdgpu_device *adev,
+ struct amdgpu_crtc *acrtc)
{
- struct common_irq_params *irq_params = interrupt_params;
- struct amdgpu_device *adev = irq_params->adev;
struct drm_writeback_job *job;
- struct amdgpu_crtc *acrtc;
unsigned long flags;
int vrr_active;
-
- acrtc = get_crtc_by_otg_inst(adev, irq_params->irq_src - IRQ_TYPE_VBLANK);
- if (!acrtc)
- return;
+ bool is_dcn = amdgpu_ip_version(adev, DCE_HWIP, 0) != 0;
if (acrtc->wb_conn) {
spin_lock_irqsave(&acrtc->wb_conn->job_lock, flags);
@@ -694,12 +630,17 @@ static void dm_crtc_high_irq(void *inter
vrr_active, acrtc->dm_irq_params.active_planes);
/**
- * Core vblank handling at start of front-porch is only possible
- * in non-vrr mode, as only there vblank timestamping will give
- * valid results while done in front-porch. Otherwise defer it
- * to dm_vupdate_high_irq after end of front-porch.
+ * Core vblank handling.
+ *
+ * On DCN this handler runs at VUPDATE_NO_LOCK, the register latch
+ * point, which is the correct place to timestamp both VRR and non-VRR
+ * vblanks.
+ *
+ * On DCE this handler runs at the start of front-porch, where only
+ * non-VRR timestamping is valid; VRR vblank is deferred to
+ * dm_vupdate_high_irq() after end of front-porch.
*/
- if (!vrr_active)
+ if (is_dcn || !vrr_active)
amdgpu_dm_crtc_handle_vblank(acrtc);
/**
@@ -732,18 +673,16 @@ static void dm_crtc_high_irq(void *inter
}
/*
- * If there aren't any active_planes then DCH HUBP may be clock-gated.
- * In that case, pageflip completion interrupts won't fire and pageflip
- * completion events won't get delivered. Prevent this by sending
- * pending pageflip events from here if a flip is still pending.
+ * Deliver pageflip completion events (DCN only).
*
- * If any planes are enabled, use dm_pflip_high_irq() instead, to
- * avoid race conditions between flip programming and completion,
- * which could cause too early flip completion events.
- */
- if (adev->family >= AMDGPU_FAMILY_RV &&
- acrtc->pflip_status == AMDGPU_FLIP_SUBMITTED &&
- acrtc->dm_irq_params.active_planes == 0) {
+ * Since GRPH_PFLIP is not used, VUPDATE_NO_LOCK is the flip latch
+ * point. Deliver any pending pageflip completion event from here.
+ *
+ * NOTE: This can deliver an event for a flip that was armed but not yet
+ * programmed into HW; that race is closed in a follow-up change by
+ * checking the programmed flip status.
+ */
+ if (is_dcn && acrtc->pflip_status == AMDGPU_FLIP_SUBMITTED) {
if (acrtc->event) {
drm_crtc_send_vblank_event(&acrtc->base, acrtc->event);
acrtc->event = NULL;
@@ -755,6 +694,104 @@ static void dm_crtc_high_irq(void *inter
spin_unlock_irqrestore(&adev_to_drm(adev)->event_lock, flags);
}
+static void dm_vupdate_high_irq(void *interrupt_params)
+{
+ struct common_irq_params *irq_params = interrupt_params;
+ struct amdgpu_device *adev = irq_params->adev;
+ struct amdgpu_crtc *acrtc;
+ struct drm_device *drm_dev;
+ struct drm_vblank_crtc *vblank;
+ ktime_t frame_duration_ns, previous_timestamp;
+ unsigned long flags;
+ int vrr_active;
+
+ acrtc = get_crtc_by_otg_inst(adev, irq_params->irq_src - IRQ_TYPE_VUPDATE);
+ if (!acrtc)
+ return;
+
+ vrr_active = amdgpu_dm_crtc_vrr_active_irq(acrtc);
+ drm_dev = acrtc->base.dev;
+ vblank = drm_crtc_vblank_crtc(&acrtc->base);
+ previous_timestamp = atomic64_read(&irq_params->previous_timestamp);
+ frame_duration_ns = vblank->time - previous_timestamp;
+
+ if (frame_duration_ns > 0) {
+ trace_amdgpu_refresh_rate_track(acrtc->base.index,
+ frame_duration_ns,
+ ktime_divns(NSEC_PER_SEC, frame_duration_ns));
+ atomic64_set(&irq_params->previous_timestamp, vblank->time);
+ }
+
+ drm_dbg_vbl(drm_dev,
+ "crtc:%d, vupdate-vrr:%d\n", acrtc->crtc_id,
+ vrr_active);
+
+ /*
+ * On DCN, VUPDATE_NO_LOCK is the single OTG interrupt used to deliver
+ * vblank and pageflip completion events; VSTARTUP and GRPH_PFLIP are
+ * not used. Run the full handler here.
+ */
+ if (amdgpu_ip_version(adev, DCE_HWIP, 0) != 0) {
+ dm_crtc_high_irq_handler(adev, acrtc);
+ return;
+ }
+
+ /* DCE only below. */
+
+ /* Core vblank handling is done here after end of front-porch in
+ * vrr mode, as vblank timestamping will give valid results
+ * while now done after front-porch. This will also deliver
+ * page-flip completion events that have been queued to us
+ * if a pageflip happened inside front-porch.
+ */
+ if (vrr_active && acrtc->dm_irq_params.stream) {
+ bool replay_en = acrtc->dm_irq_params.stream->link->replay_settings.replay_feature_enabled;
+ bool psr_en = acrtc->dm_irq_params.stream->link->psr_settings.psr_feature_enabled;
+ bool fs_active_var_en = acrtc->dm_irq_params.freesync_config.state
+ == VRR_STATE_ACTIVE_VARIABLE;
+
+ amdgpu_dm_crtc_handle_vblank(acrtc);
+
+ /* BTR processing for pre-DCE12 ASICs */
+ if (adev->family < AMDGPU_FAMILY_AI) {
+ spin_lock_irqsave(&adev_to_drm(adev)->event_lock, flags);
+ mod_freesync_handle_v_update(
+ adev->dm.freesync_module,
+ acrtc->dm_irq_params.stream,
+ &acrtc->dm_irq_params.vrr_params);
+
+ if (fs_active_var_en || (!fs_active_var_en && !replay_en && !psr_en)) {
+ schedule_dc_vmin_vmax(adev,
+ acrtc->dm_irq_params.stream,
+ &acrtc->dm_irq_params.vrr_params.adjust);
+ }
+ spin_unlock_irqrestore(&adev_to_drm(adev)->event_lock, flags);
+ }
+ }
+}
+
+/**
+ * dm_crtc_high_irq() - Handles CRTC interrupt
+ * @interrupt_params: used for determining the CRTC instance
+ *
+ * Handles the CRTC/VSYNC interrupt by notifying DRM's VBLANK event handler.
+ *
+ * Used on DCE (VLINE0, set to vblank start). On DCN the equivalent handling is
+ * driven by VUPDATE_NO_LOCK in dm_vupdate_high_irq().
+ */
+static void dm_crtc_high_irq(void *interrupt_params)
+{
+ struct common_irq_params *irq_params = interrupt_params;
+ struct amdgpu_device *adev = irq_params->adev;
+ struct amdgpu_crtc *acrtc;
+
+ acrtc = get_crtc_by_otg_inst(adev, irq_params->irq_src - IRQ_TYPE_VBLANK);
+ if (!acrtc)
+ return;
+
+ dm_crtc_high_irq_handler(adev, acrtc);
+}
+
#if defined(CONFIG_DRM_AMD_SECURE_DISPLAY)
/**
* dm_dcn_vertical_interrupt0_high_irq() - Handles OTG Vertical interrupt0 for
@@ -3059,6 +3096,13 @@ static void dm_gpureset_toggle_interrupt
*/
if (!dc_interrupt_set(adev->dm.dc, irq_source, enable))
drm_warn(adev_to_drm(adev), "Failed to %sable vblank interrupt\n", enable ? "en" : "dis");
+
+ } else if (acrtc && state->stream_status[i].plane_count != 0) {
+ /* DCN only needs to toggle VUPDATE_NO_LOCK */
+ rc = amdgpu_dm_crtc_set_vupdate_irq(&acrtc->base, enable);
+ if (rc)
+ drm_warn(adev_to_drm(adev), "Failed to %sable vupdate interrupt\n",
+ enable ? "en" : "dis");
}
}
@@ -4558,38 +4602,6 @@ static int dcn10_register_irq_handlers(s
* for acknowledging and handling.
*/
- /* Use VSTARTUP interrupt */
- for (i = DCN_1_0__SRCID__DC_D1_OTG_VSTARTUP;
- i <= DCN_1_0__SRCID__DC_D1_OTG_VSTARTUP + adev->mode_info.num_crtc - 1;
- i++) {
- r = amdgpu_irq_add_id(adev, SOC15_IH_CLIENTID_DCE, i, &adev->crtc_irq);
-
- if (r) {
- drm_err(adev_to_drm(adev), "Failed to add crtc irq id!\n");
- return r;
- }
-
- int_params.int_context = INTERRUPT_HIGH_IRQ_CONTEXT;
- int_params.irq_source =
- dc_interrupt_to_irq_source(dc, i, 0);
-
- if (int_params.irq_source == DC_IRQ_SOURCE_INVALID ||
- int_params.irq_source < DC_IRQ_SOURCE_VBLANK1 ||
- int_params.irq_source > DC_IRQ_SOURCE_VBLANK6) {
- drm_err(adev_to_drm(adev), "Failed to register vblank irq!\n");
- return -EINVAL;
- }
-
- c_irq_params = &adev->dm.vblank_params[int_params.irq_source - DC_IRQ_SOURCE_VBLANK1];
-
- c_irq_params->adev = adev;
- c_irq_params->irq_src = int_params.irq_source;
-
- if (!amdgpu_dm_irq_register_interrupt(adev, &int_params,
- dm_crtc_high_irq, c_irq_params))
- return -ENOMEM;
- }
-
/* Use otg vertical line interrupt */
#if defined(CONFIG_DRM_AMD_SECURE_DISPLAY)
for (i = 0; i <= adev->mode_info.num_crtc - 1; i++) {
@@ -4661,37 +4673,6 @@ static int dcn10_register_irq_handlers(s
return -ENOMEM;
}
- /* Use GRPH_PFLIP interrupt */
- for (i = DCN_1_0__SRCID__HUBP0_FLIP_INTERRUPT;
- i <= DCN_1_0__SRCID__HUBP0_FLIP_INTERRUPT + dc->caps.max_otg_num - 1;
- i++) {
- r = amdgpu_irq_add_id(adev, SOC15_IH_CLIENTID_DCE, i, &adev->pageflip_irq);
- if (r) {
- drm_err(adev_to_drm(adev), "Failed to add page flip irq id!\n");
- return r;
- }
-
- int_params.int_context = INTERRUPT_HIGH_IRQ_CONTEXT;
- int_params.irq_source =
- dc_interrupt_to_irq_source(dc, i, 0);
-
- if (int_params.irq_source == DC_IRQ_SOURCE_INVALID ||
- int_params.irq_source < DC_IRQ_SOURCE_PFLIP_FIRST ||
- int_params.irq_source > DC_IRQ_SOURCE_PFLIP_LAST) {
- drm_err(adev_to_drm(adev), "Failed to register pflip irq!\n");
- return -EINVAL;
- }
-
- c_irq_params = &adev->dm.pflip_params[int_params.irq_source - DC_IRQ_SOURCE_PFLIP_FIRST];
-
- c_irq_params->adev = adev;
- c_irq_params->irq_src = int_params.irq_source;
-
- if (!amdgpu_dm_irq_register_interrupt(adev, &int_params,
- dm_pflip_high_irq, c_irq_params))
- return -ENOMEM;
- }
-
/* HPD */
r = amdgpu_irq_add_id(adev, SOC15_IH_CLIENTID_DCE, DCN_1_0__SRCID__DC_HPD1_INT,
&adev->hpd_irq);
@@ -9118,14 +9099,22 @@ static void manage_dm_interrupts(struct
drm_crtc_vblank_on_config(&acrtc->base,
&config);
- /* Allow RX6xxx, RX7700, RX7800 GPUs to call amdgpu_irq_get.*/
+ /*
+ * Since pflip_high_irq is no longer registered for DCN, grab an
+ * extra reference to vupdate irq instead to workaround this
+ * issue:
+ * https://gitlab.freedesktop.org/drm/amd/-/work_items/3936
+ *
+ * The callbacks to drm_vblank_on/off should really take care of
+ * this though.
+ */
switch (amdgpu_ip_version(adev, DCE_HWIP, 0)) {
case IP_VERSION(3, 0, 0):
case IP_VERSION(3, 0, 2):
case IP_VERSION(3, 0, 3):
case IP_VERSION(3, 2, 0):
- if (amdgpu_irq_get(adev, &adev->pageflip_irq, irq_type))
- drm_err(dev, "DM_IRQ: Cannot get pageflip irq!\n");
+ if (amdgpu_irq_get(adev, &adev->vupdate_irq, irq_type))
+ drm_err(dev, "DM_IRQ: Cannot get vupdate irq!\n");
#if defined(CONFIG_DRM_AMD_SECURE_DISPLAY)
if (amdgpu_irq_get(adev, &adev->vline0_irq, irq_type))
drm_err(dev, "DM_IRQ: Cannot get vline0 irq!\n");
@@ -9143,8 +9132,8 @@ static void manage_dm_interrupts(struct
if (amdgpu_irq_put(adev, &adev->vline0_irq, irq_type))
drm_err(dev, "DM_IRQ: Cannot put vline0 irq!\n");
#endif
- if (amdgpu_irq_put(adev, &adev->pageflip_irq, irq_type))
- drm_err(dev, "DM_IRQ: Cannot put pageflip irq!\n");
+ if (amdgpu_irq_put(adev, &adev->vupdate_irq, irq_type))
+ drm_err(dev, "DM_IRQ: Cannot put vupdate irq!\n");
}
drm_crtc_vblank_off(&acrtc->base);
@@ -9157,6 +9146,10 @@ static void dm_update_pflip_irq_state(st
int irq_type =
amdgpu_display_crtc_idx_to_irq_type(adev, acrtc->crtc_id);
+ /* GRPH_PFLIP is not used on DCN; nothing to reapply. */
+ if (amdgpu_ip_version(adev, DCE_HWIP, 0) != 0)
+ return;
+
/**
* This reads the current state for the IRQ and force reapplies
* the setting to hardware.
@@ -9488,9 +9481,13 @@ static void update_stream_irq_parameters
static void amdgpu_dm_handle_vrr_transition(struct dm_crtc_state *old_state,
struct dm_crtc_state *new_state)
{
+ struct amdgpu_device *adev = drm_to_adev(new_state->base.crtc->dev);
bool old_vrr_active = amdgpu_dm_crtc_vrr_active(old_state);
bool new_vrr_active = amdgpu_dm_crtc_vrr_active(new_state);
+ /* Only DCE gates vupdate on VRR, keep it enabled for DCN */
+ bool vrr_gates_vupdate = amdgpu_ip_version(adev, DCE_HWIP, 0) == 0;
+
if (!old_vrr_active && new_vrr_active) {
/* Transition VRR inactive -> active:
* While VRR is active, we must not disable vblank irq, as a
@@ -9500,7 +9497,8 @@ static void amdgpu_dm_handle_vrr_transit
* We also need vupdate irq for the actual core vblank handling
* at end of vblank.
*/
- WARN_ON(amdgpu_dm_crtc_set_vupdate_irq(new_state->base.crtc, true) != 0);
+ if (vrr_gates_vupdate)
+ WARN_ON(amdgpu_dm_crtc_set_vupdate_irq(new_state->base.crtc, true) != 0);
WARN_ON(drm_crtc_vblank_get(new_state->base.crtc) != 0);
drm_dbg_driver(new_state->base.crtc->dev, "%s: crtc=%u VRR off->on: Get vblank ref\n",
__func__, new_state->base.crtc->base.id);
@@ -9508,7 +9506,8 @@ static void amdgpu_dm_handle_vrr_transit
/* Transition VRR active -> inactive:
* Allow vblank irq disable again for fixed refresh rate.
*/
- WARN_ON(amdgpu_dm_crtc_set_vupdate_irq(new_state->base.crtc, false) != 0);
+ if (vrr_gates_vupdate)
+ WARN_ON(amdgpu_dm_crtc_set_vupdate_irq(new_state->base.crtc, false) != 0);
drm_crtc_vblank_put(new_state->base.crtc);
drm_dbg_driver(new_state->base.crtc->dev, "%s: crtc=%u VRR on->off: Drop vblank ref\n",
__func__, new_state->base.crtc->base.id);
@@ -9683,6 +9682,7 @@ static void amdgpu_dm_commit_planes(stru
bool vrr_active = amdgpu_dm_crtc_vrr_active(acrtc_state);
bool cursor_update = false;
bool pflip_present = false;
+ bool immediate_flip = false;
bool dirty_rects_changed = false;
bool updated_planes_and_streams = false;
struct {
@@ -9848,6 +9848,8 @@ static void amdgpu_dm_commit_planes(stru
acrtc_state->update_type == UPDATE_TYPE_FAST &&
get_mem_type(old_plane_state->fb) == get_mem_type(fb);
+ immediate_flip |= bundle->flip_addrs[planes_count].flip_immediate;
+
timestamp_ns = ktime_get_ns();
bundle->flip_addrs[planes_count].flip_timestamp_in_us = div_u64(timestamp_ns, 1000);
bundle->surface_updates[planes_count].flip_addr = &bundle->flip_addrs[planes_count];
@@ -10049,6 +10051,29 @@ static void amdgpu_dm_commit_planes(stru
acrtc_state->cursor_mode == DM_CURSOR_NATIVE_MODE)
amdgpu_dm_commit_cursors(state);
+ /*
+ * On DCN, flip completion is normally delivered from VUPDATE_NO_LOCK.
+ * However, an immediate (tearing / async) flip is latched by HW right
+ * away and does not wait for the next vupdate, so deliver its
+ * completion event here after programming.
+ *
+ * On DCE, GRPH_PFLIP already fires immediately for immediate flips, so
+ * this is DCN-only.
+ */
+ if (immediate_flip && amdgpu_ip_version(dm->adev, DCE_HWIP, 0) != 0) {
+ spin_lock_irqsave(&pcrtc->dev->event_lock, flags);
+ if (acrtc_attach->pflip_status == AMDGPU_FLIP_SUBMITTED &&
+ acrtc_attach->event) {
+ drm_crtc_accurate_vblank_count(&acrtc_attach->base);
+ drm_crtc_send_vblank_event(&acrtc_attach->base,
+ acrtc_attach->event);
+ acrtc_attach->event = NULL;
+ drm_crtc_vblank_put(&acrtc_attach->base);
+ acrtc_attach->pflip_status = AMDGPU_FLIP_NONE;
+ }
+ spin_unlock_irqrestore(&pcrtc->dev->event_lock, flags);
+ }
+
cleanup:
kfree(bundle);
}
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crtc.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crtc.c
@@ -327,7 +327,14 @@ static inline int amdgpu_dm_crtc_set_vbl
drm_crtc_vblank_restore(crtc);
}
- if (dc_supports_vrr(dm->dc->ctx->dce_version)) {
+ /*
+ * On DCN, VUPDATE_NO_LOCK is the single OTG interrupt used to deliver
+ * vblank and pageflip completion events, so enable it whenever vblank
+ * is enabled. On DCE, vupdate is only needed in VRR mode.
+ */
+ if (amdgpu_ip_version(adev, DCE_HWIP, 0) != 0) {
+ rc = amdgpu_dm_crtc_set_vupdate_irq(crtc, enable);
+ } else if (dc_supports_vrr(dm->dc->ctx->dce_version)) {
if (enable) {
/* vblank irq on -> Only need vupdate irq in vrr mode */
if (amdgpu_dm_crtc_vrr_active(acrtc_state))
@@ -341,36 +348,43 @@ static inline int amdgpu_dm_crtc_set_vbl
if (rc)
return rc;
- /* crtc vblank or vstartup interrupt */
- if (enable) {
- rc = amdgpu_irq_get(adev, &adev->crtc_irq, irq_type);
- drm_dbg_vbl(crtc->dev, "Get crtc_irq ret=%d\n", rc);
- } else {
- rc = amdgpu_irq_put(adev, &adev->crtc_irq, irq_type);
- drm_dbg_vbl(crtc->dev, "Put crtc_irq ret=%d\n", rc);
- }
-
- if (rc)
- return rc;
-
/*
- * hubp surface flip interrupt
- *
- * We have no guarantee that the frontend index maps to the same
- * backend index - some even map to more than one.
- *
- * TODO: Use a different interrupt or check DC itself for the mapping.
+ * VLINE0 (crtc_irq) and GRPH_PFLIP (pageflip_irq) are only used on
+ * DCE. On DCN, vblank and pageflip completion are delivered from
+ * VUPDATE_NO_LOCK (enabled above), so don't touch them here.
*/
- if (enable) {
- rc = amdgpu_irq_get(adev, &adev->pageflip_irq, irq_type);
- drm_dbg_vbl(crtc->dev, "Get pageflip_irq ret=%d\n", rc);
- } else {
- rc = amdgpu_irq_put(adev, &adev->pageflip_irq, irq_type);
- drm_dbg_vbl(crtc->dev, "Put pageflip_irq ret=%d\n", rc);
- }
+ if (amdgpu_ip_version(adev, DCE_HWIP, 0) == 0) {
+ /* crtc vblank or vstartup interrupt */
+ if (enable) {
+ rc = amdgpu_irq_get(adev, &adev->crtc_irq, irq_type);
+ drm_dbg_vbl(crtc->dev, "Get crtc_irq ret=%d\n", rc);
+ } else {
+ rc = amdgpu_irq_put(adev, &adev->crtc_irq, irq_type);
+ drm_dbg_vbl(crtc->dev, "Put crtc_irq ret=%d\n", rc);
+ }
- if (rc)
- return rc;
+ if (rc)
+ return rc;
+
+ /*
+ * hubp surface flip interrupt
+ *
+ * We have no guarantee that the frontend index maps to the same
+ * backend index - some even map to more than one.
+ *
+ * TODO: Use a different interrupt or check DC itself for the mapping.
+ */
+ if (enable) {
+ rc = amdgpu_irq_get(adev, &adev->pageflip_irq, irq_type);
+ drm_dbg_vbl(crtc->dev, "Get pageflip_irq ret=%d\n", rc);
+ } else {
+ rc = amdgpu_irq_put(adev, &adev->pageflip_irq, irq_type);
+ drm_dbg_vbl(crtc->dev, "Put pageflip_irq ret=%d\n", rc);
+ }
+
+ if (rc)
+ return rc;
+ }
#if defined(CONFIG_DRM_AMD_SECURE_DISPLAY)
/* crtc vline0 interrupt, only available on DCN+ */
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 382/675] drm/amd/display: dce100: skip non-DP stream encoders for DP MST
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (380 preceding siblings ...)
2026-07-30 14:11 ` [PATCH 6.18 381/675] drm/amd/display: consolidate DCN vblank/flip handling onto vupdate_no_lock Greg Kroah-Hartman
@ 2026-07-30 14:11 ` Greg Kroah-Hartman
2026-07-30 14:11 ` [PATCH 6.18 383/675] drm/amd/display: Force PWM backlight on Lenovo Legion 5 15ARH05 Greg Kroah-Hartman
` (297 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:11 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Andriy Korud, Alex Deucher
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Andriy Korud <a.korud@gmail.com>
commit d340cba0df4cf327c7e89c7c1a4e79d4771d7dd5 upstream.
On DCE8-class ASICs (e.g. Bonaire), the resource pool contains digital
DIG stream encoders plus one analog DAC encoder. When assigning a stream
encoder for a second DisplayPort MST stream, if the preferred digital
encoder is already acquired, dce100_find_first_free_match_stream_enc_for_link()
falls back to the first free pool entry. That entry may be the analog
encoder, whose funcs table lacks DP hooks such as dp_set_stream_attribute.
The subsequent atomic commit then dereferences NULL function pointers in
link_set_dpms_on() and crashes.
Skip encoders without dp_set_stream_attribute when the stream uses a DP
signal (including MST). Use dc_is_dp_signal(stream->signal) for the MST
fallback path instead of checking only the link connector signal.
Tested on:
- GPU: AMD Radeon R7 260X (Bonaire / DCE8)
- Board: Supermicro C9X299-PG300
- Setup: DP MST daisy chain, hotplug second monitor or have it connected on boot
- Kernel: 7.1.3 (issue observed since 6.19)
- Result: kernel oops without patch; dual monitors stable with patch
Signed-off-by: Andriy Korud <a.korud@gmail.com>
Closes: https://gitlab.freedesktop.org/drm/amd/-/work_items/5162
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 28ec64943e3ee4d9b8d30cea61e380f1429953a8)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/display/dc/resource/dce100/dce100_resource.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
--- a/drivers/gpu/drm/amd/display/dc/resource/dce100/dce100_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/resource/dce100/dce100_resource.c
@@ -957,6 +957,11 @@ struct stream_encoder *dce100_find_first
for (i = 0; i < pool->stream_enc_count; i++) {
if (!res_ctx->is_stream_enc_acquired[i] &&
pool->stream_enc[i]) {
+ /* DP/MST needs a digital encoder; skip analog/no-DP encoders */
+ if (dc_is_dp_signal(stream->signal) &&
+ (!pool->stream_enc[i]->funcs ||
+ !pool->stream_enc[i]->funcs->dp_set_stream_attribute))
+ continue;
/* Store first available for MST second display
* in daisy chain use case
*/
@@ -980,7 +985,7 @@ struct stream_encoder *dce100_find_first
* required for non DP connectors.
*/
- if (j >= 0 && link->connector_signal == SIGNAL_TYPE_DISPLAY_PORT)
+ if (j >= 0 && dc_is_dp_signal(stream->signal))
return pool->stream_enc[j];
return NULL;
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 383/675] drm/amd/display: Force PWM backlight on Lenovo Legion 5 15ARH05
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (381 preceding siblings ...)
2026-07-30 14:11 ` [PATCH 6.18 382/675] drm/amd/display: dce100: skip non-DP stream encoders for DP MST Greg Kroah-Hartman
@ 2026-07-30 14:11 ` Greg Kroah-Hartman
2026-07-30 14:11 ` [PATCH 6.18 384/675] drm/amd/display: Fix backlight max_brightness to match exported range Greg Kroah-Hartman
` (296 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:11 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Alessandro Rinaldi, George Zhang,
Alex Deucher
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Alessandro Rinaldi <ale@alerinaldi.it>
commit bad177fa75e607e396cd57daaaed881450d7a471 upstream.
The Lenovo Legion 5 15ARH05 (Renoir) ships a BOE 0x08DF eDP panel that
advertises AUX/DPCD backlight control, so amdgpu's automatic detection
(amdgpu_backlight == -1) selects AUX. On this panel the AUX backlight
path has no effect: brightness writes are accepted but the panel level
never changes, the display is stuck at a fixed brightness and
max_brightness is reported as a bogus 511000. As a result neither the
desktop brightness slider nor the brightness hotkeys do anything.
Forcing PWM backlight (amdgpu.backlight=0) restores working control:
max_brightness becomes 65535 and the level tracks writes. This has long
been applied by users as a manual kernel-parameter workaround.
Extend the generic panel backlight quirk with a force_pwm flag, add an
entry for the Legion 5 15ARH05 / BOE 0x08DF panel, and have amdgpu
disable AUX backlight (use PWM) when the quirk matches and the user
lets the driver auto-select the backlight type.
Signed-off-by: Alessandro Rinaldi <ale@alerinaldi.it>
Tested-by: Alessandro Rinaldi <ale@alerinaldi.it>
Reviewed-by: George Zhang <george.zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 81b39f43e7e53589491e2eef6bad5389626b4b9c)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 7 +++++--
drivers/gpu/drm/drm_panel_backlight_quirks.c | 9 +++++++++
include/drm/drm_utils.h | 1 +
3 files changed, 15 insertions(+), 2 deletions(-)
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -3724,6 +3724,8 @@ static void update_connector_ext_caps(st
caps->ext_caps = &aconnector->dc_link->dpcd_sink_ext_caps;
caps->aux_support = false;
+ panel_backlight_quirk = drm_get_panel_backlight_quirk(aconnector->drm_edid);
+
if (caps->ext_caps->bits.oled == 1
/*
* ||
@@ -3736,6 +3738,9 @@ static void update_connector_ext_caps(st
caps->aux_support = false;
else if (amdgpu_backlight == 1)
caps->aux_support = true;
+ else if (!IS_ERR_OR_NULL(panel_backlight_quirk) &&
+ panel_backlight_quirk->force_pwm)
+ caps->aux_support = false;
if (caps->aux_support)
aconnector->dc_link->backlight_control_type = BACKLIGHT_CONTROL_AMD_AUX;
@@ -3751,8 +3756,6 @@ static void update_connector_ext_caps(st
else
caps->aux_min_input_signal = 1;
- panel_backlight_quirk =
- drm_get_panel_backlight_quirk(aconnector->drm_edid);
if (!IS_ERR_OR_NULL(panel_backlight_quirk)) {
if (panel_backlight_quirk->min_brightness) {
caps->min_input_signal =
--- a/drivers/gpu/drm/drm_panel_backlight_quirks.c
+++ b/drivers/gpu/drm/drm_panel_backlight_quirks.c
@@ -21,6 +21,15 @@ struct drm_get_panel_backlight_quirk {
};
static const struct drm_get_panel_backlight_quirk drm_panel_min_backlight_quirks[] = {
+ /* Lenovo Legion 5 15ARH05, AUX backlight non-functional, force PWM */
+ {
+ .dmi_match.field = DMI_SYS_VENDOR,
+ .dmi_match.value = "LENOVO",
+ .dmi_match_other.field = DMI_PRODUCT_VERSION,
+ .dmi_match_other.value = "Lenovo Legion 5 15ARH05",
+ .ident.panel_id = drm_edid_encode_panel_id('B', 'O', 'E', 0x08df),
+ .quirk = { .force_pwm = true, },
+ },
/* 13 inch matte panel */
{
.dmi_match.field = DMI_BOARD_VENDOR,
--- a/include/drm/drm_utils.h
+++ b/include/drm/drm_utils.h
@@ -19,6 +19,7 @@ int drm_get_panel_orientation_quirk(int
struct drm_panel_backlight_quirk {
u16 min_brightness;
u32 brightness_mask;
+ bool force_pwm;
};
const struct drm_panel_backlight_quirk *
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 384/675] drm/amd/display: Fix backlight max_brightness to match exported range
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (382 preceding siblings ...)
2026-07-30 14:11 ` [PATCH 6.18 383/675] drm/amd/display: Force PWM backlight on Lenovo Legion 5 15ARH05 Greg Kroah-Hartman
@ 2026-07-30 14:11 ` Greg Kroah-Hartman
2026-07-30 14:11 ` [PATCH 6.18 385/675] drm/amdgpu: Disable PCIe dynamic speed switching on Ryzen Pinnacle Ridge Greg Kroah-Hartman
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From: Greg Kroah-Hartman @ 2026-07-30 14:11 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Alex Hung, Mario Limonciello,
George Zhang, Alex Deucher
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Mario Limonciello <mario.limonciello@amd.com>
commit f1b5d8f9cc54ae8a2567ac126867ae488e1bf625 upstream.
[Why]
FWTS autobrightness fails on eDP panels because actual_brightness can
read higher than the advertised max_brightness (e.g. 63576 vs 62451).
The conversion helpers expose the firmware PWM range to userspace as
[0..max]. But max_brightness is advertised as (max - min), which is
smaller. So reading the level can return a value above max_brightness.
This regressed in commit 4b61b8a39051 ("drm/amd/display: Add debugging
message for brightness caps"), which changed max_brightness to
(max - min) and undid commit 8dbd72cb7900 ("drm/amd/display: Export full
brightness range to userspace").
[How]
Advertise max_brightness as max, and scale the initial AC/DC brightness
against max too. Update the KUnit expectations to match.
Fixes: 4b61b8a39051 ("drm/amd/display: Add debugging message for brightness caps")
Reviewed-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: George Zhang <george.zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit bd9e2b5b0473c75abc0f4134dfe79ecbfb16610d)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -5204,11 +5204,11 @@ amdgpu_dm_register_backlight_device(stru
caps = &dm->backlight_caps[aconnector->bl_idx];
if (get_brightness_range(caps, &min, &max)) {
if (power_supply_is_system_supplied() > 0)
- props.brightness = DIV_ROUND_CLOSEST((max - min) * caps->ac_level, 100);
+ props.brightness = DIV_ROUND_CLOSEST(max * caps->ac_level, 100);
else
- props.brightness = DIV_ROUND_CLOSEST((max - min) * caps->dc_level, 100);
+ props.brightness = DIV_ROUND_CLOSEST(max * caps->dc_level, 100);
/* min is zero, so max needs to be adjusted */
- props.max_brightness = max - min;
+ props.max_brightness = max;
drm_dbg(drm, "Backlight caps: min: %d, max: %d, ac %d, dc %d\n", min, max,
caps->ac_level, caps->dc_level);
} else
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 385/675] drm/amdgpu: Disable PCIe dynamic speed switching on Ryzen Pinnacle Ridge
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
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2026-07-30 14:11 ` [PATCH 6.18 384/675] drm/amd/display: Fix backlight max_brightness to match exported range Greg Kroah-Hartman
@ 2026-07-30 14:11 ` Greg Kroah-Hartman
2026-07-30 14:11 ` [PATCH 6.18 386/675] drm/amdgpu: fix bo->pin leaking in amdgpu_bo_create_reserved Greg Kroah-Hartman
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From: Greg Kroah-Hartman @ 2026-07-30 14:11 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Lijo Lazar, Mario Limonciello,
Alex Deucher
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Mario Limonciello <mario.limonciello@amd.com>
commit 0148ac33547b9af1c5a7f3bb6e5baffcb6e9fac2 upstream.
AMD Ryzen Pinnacle Ridge (Zen+, family 0x17 model 0x08) CPUs have
PCI controllers that don't support PCIe dynamic speed switching,
causing system freezes during GPU initialization when enabled.
Disable dynamic speed switching when this CPU is detected.
Assisted-by: Claude:sonnet
Fixes: 466a7d115326 ("drm/amd: Use the first non-dGPU PCI device for BW limits")
Closes: https://gitlab.freedesktop.org/drm/amd/-/work_items/5436
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Link: https://patch.msgid.link/20260709031520.841611-1-mario.limonciello@amd.com
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 9ceb4e034a327a04155f32f1cd1a5031dfa5fe02)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 9 +++++++++
1 file changed, 9 insertions(+)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -1878,6 +1878,15 @@ static bool amdgpu_device_pcie_dynamic_s
if (c->x86_vendor == X86_VENDOR_INTEL)
return false;
+
+ /*
+ * AMD Ryzen Pinnacle Ridge (Zen+, family 0x17 model 0x08) CPUs don't
+ * support PCIe dynamic speed switching.
+ * https://gitlab.freedesktop.org/drm/amd/-/work_items/5436
+ */
+ if (c->x86_vendor == X86_VENDOR_AMD && c->x86 == 0x17 &&
+ c->x86_model == 0x08)
+ return false;
#endif
return true;
}
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 386/675] drm/amdgpu: fix bo->pin leaking in amdgpu_bo_create_reserved
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (384 preceding siblings ...)
2026-07-30 14:11 ` [PATCH 6.18 385/675] drm/amdgpu: Disable PCIe dynamic speed switching on Ryzen Pinnacle Ridge Greg Kroah-Hartman
@ 2026-07-30 14:11 ` Greg Kroah-Hartman
2026-07-30 14:11 ` [PATCH 6.18 387/675] drm/amd/display: Fix flip-done timeouts on mode1 reset Greg Kroah-Hartman
` (293 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:11 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Zhu Lingshan, Alex Deucher,
Christian König
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Zhu Lingshan <lingshan.zhu@amd.com>
commit a2f895f3c852063258d62e9f74b081de07ca95df upstream.
amdgpu_bo_create_reserved() only allocates a new BO when
*bo_ptr (struct amdgpu_bo **bo_ptr as input parameter) is
NULL, it simply skips creation when *bo_ptr is non-NULL.
But it unconditionally reserves, pins, gart allocates
and maps the BO afterwards.
When the same non-NULL BO pointer is passed in again,
for example firmware buffers that live in adev and are
re-loaded on every resume / cp_resume / start
under AMDGPU_FW_LOAD_DIRECT, amdgpu_bo_pin() just increases
pin_count unconditionally, however the matching teardown only unpins
once, so pin_count never drops to zero, so TTM is not able
to move, swap or evict a BO, causing BO leaks.
This commit fixes this issue by only pinning the bo
once at creation, and repeated calls no longer
take additional pin references.
Signed-off-by: Zhu Lingshan <lingshan.zhu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 3ddc0ae76202c447b6aec61e907b852bc94671cf)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 13 ++++++++-----
1 file changed, 8 insertions(+), 5 deletions(-)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
@@ -284,10 +284,12 @@ int amdgpu_bo_create_reserved(struct amd
goto error_free;
}
- r = amdgpu_bo_pin(*bo_ptr, domain);
- if (r) {
- dev_err(adev->dev, "(%d) kernel bo pin failed\n", r);
- goto error_unreserve;
+ if (free) {
+ r = amdgpu_bo_pin(*bo_ptr, domain);
+ if (r) {
+ dev_err(adev->dev, "(%d) kernel bo pin failed\n", r);
+ goto error_unreserve;
+ }
}
r = amdgpu_ttm_alloc_gart(&(*bo_ptr)->tbo);
@@ -310,7 +312,8 @@ int amdgpu_bo_create_reserved(struct amd
return 0;
error_unpin:
- amdgpu_bo_unpin(*bo_ptr);
+ if (free)
+ amdgpu_bo_unpin(*bo_ptr);
error_unreserve:
amdgpu_bo_unreserve(*bo_ptr);
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 387/675] drm/amd/display: Fix flip-done timeouts on mode1 reset
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
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2026-07-30 14:11 ` [PATCH 6.18 386/675] drm/amdgpu: fix bo->pin leaking in amdgpu_bo_create_reserved Greg Kroah-Hartman
@ 2026-07-30 14:11 ` Greg Kroah-Hartman
2026-07-30 14:11 ` [PATCH 6.18 388/675] drm/vc4: Shut down BO cache timer before teardown Greg Kroah-Hartman
` (292 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:11 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Leo Li, Mario Limonciello (AMD),
Mario Limonciello
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Leo Li <sunpeng.li@amd.com>
commit 82730dba0cf9d9524af0ceeb7eb6b5c3ab1bdb87 upstream.
The vblank on/off callbacks mixed use of amdgpu_irq_get/put() and
amdgpu_dm_crtc_set_vupdate_irq() to enable and disable IRQs.
With get/put, base driver will callback into DC to disable IRQs when
refcount == 0. With set_vupdate_irq(), DC is called directly to disable
IRQs, bypassing base driver's refcount tracking.
During gpu reset, base driver can restore IRQs via
amdgpu_irq_gpu_reset_resume_helper() > amdgpu_irq_update(). So if
get/put() is not used (i.e. refcount == 0), then vupdate_irq will be
disabled.
This is problematic if DRM requests vblank on before amdgpu_irq_update()
is called: drm_vblank_on() > set_vupdate_irq() enables vupdate_irq, but
the refcount is still 0. gpu_reset_resume_helper() > irq_update() then
immediately disables it, thus leading to flip done timeouts.
This is made worse on DCN since VUPDATE_NO_LOCK is the only IRQ enabled.
Prior to 8382cd234981, a combination of GRPH_FLIP and VSTARTUP IRQs were
used, and they used get/put(). This explains why 8382cd234981 exposed
this issue.
Fix by using get/put() instead of set_vupdate_irq(). DCE is unchanged,
since it relies on unbalanced enable/disable calls based on VRR status,
and hence requires direct set_vupdate_irq(). Plus, it also uses
GRPH_FLIP and VLINE IRQs, which are properly tracked by get/put().
Cc: stable@vger.kernel.org
Fixes: 8382cd234981 ("drm/amd/display: consolidate DCN vblank/flip handling onto vupdate_no_lock")
Signed-off-by: Leo Li <sunpeng.li@amd.com>
Reviewed-by: Mario Limonciello (AMD) <superm1@kernel.org>
Link: https://patch.msgid.link/20260723180159.52121-1-sunpeng.li@amd.com
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crtc.c | 13 +++++++++++--
1 file changed, 11 insertions(+), 2 deletions(-)
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crtc.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crtc.c
@@ -333,10 +333,19 @@ static inline int amdgpu_dm_crtc_set_vbl
* is enabled. On DCE, vupdate is only needed in VRR mode.
*/
if (amdgpu_ip_version(adev, DCE_HWIP, 0) != 0) {
- rc = amdgpu_dm_crtc_set_vupdate_irq(crtc, enable);
+ if (enable) {
+ rc = amdgpu_irq_get(adev, &adev->vupdate_irq, irq_type);
+ drm_dbg_vbl(crtc->dev, "Get vupdate_irq ret=%d\n", rc);
+ } else {
+ rc = amdgpu_irq_put(adev, &adev->vupdate_irq, irq_type);
+ drm_dbg_vbl(crtc->dev, "Put vupdate_irq ret=%d\n", rc);
+ }
} else if (dc_supports_vrr(dm->dc->ctx->dce_version)) {
if (enable) {
- /* vblank irq on -> Only need vupdate irq in vrr mode */
+ /* vblank irq on -> Only need vupdate irq in vrr mode
+ * Not ref-counted since we need explicit enable/disable
+ * for DCE VRR handling
+ */
if (amdgpu_dm_crtc_vrr_active(acrtc_state))
rc = amdgpu_dm_crtc_set_vupdate_irq(crtc, true);
} else {
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 388/675] drm/vc4: Shut down BO cache timer before teardown
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (386 preceding siblings ...)
2026-07-30 14:11 ` [PATCH 6.18 387/675] drm/amd/display: Fix flip-done timeouts on mode1 reset Greg Kroah-Hartman
@ 2026-07-30 14:11 ` Greg Kroah-Hartman
2026-07-30 14:11 ` [PATCH 6.18 389/675] drm/amd/display: Fix missing DCE check in dm_gpureset_toggle_interrupts() Greg Kroah-Hartman
` (291 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:11 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Linmao Li, Maíra Canal
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Linmao Li <lilinmao@kylinos.cn>
commit 6273dd3ffb54ec581855b82ae77331b66028249c upstream.
The BO cache timer callback schedules time_work, and time_work can rearm
the timer through vc4_bo_cache_free_old().
vc4_bo_cache_destroy() deletes the timer and then cancels the work, which
does not break that cycle: the work being cancelled can rearm the timer,
and the timer then queues work again after teardown.
Use timer_shutdown_sync() instead, so the timer cannot be rearmed and the
cycle ends with cancel_work_sync().
Fixes: c826a6e10644 ("drm/vc4: Add a BO cache.")
Cc: stable@vger.kernel.org
Signed-off-by: Linmao Li <lilinmao@kylinos.cn>
Link: https://patch.msgid.link/20260720084426.1632508-1-lilinmao@kylinos.cn
Reviewed-by: Maíra Canal <mcanal@igalia.com>
Signed-off-by: Maíra Canal <mcanal@igalia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/vc4/vc4_bo.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/gpu/drm/vc4/vc4_bo.c
+++ b/drivers/gpu/drm/vc4/vc4_bo.c
@@ -1046,7 +1046,7 @@ static void vc4_bo_cache_destroy(struct
struct vc4_dev *vc4 = to_vc4_dev(dev);
int i;
- timer_delete(&vc4->bo_cache.time_timer);
+ timer_shutdown_sync(&vc4->bo_cache.time_timer);
cancel_work_sync(&vc4->bo_cache.time_work);
vc4_bo_cache_purge(dev);
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 389/675] drm/amd/display: Fix missing DCE check in dm_gpureset_toggle_interrupts()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (387 preceding siblings ...)
2026-07-30 14:11 ` [PATCH 6.18 388/675] drm/vc4: Shut down BO cache timer before teardown Greg Kroah-Hartman
@ 2026-07-30 14:11 ` Greg Kroah-Hartman
2026-07-30 14:12 ` [PATCH 6.18 390/675] drm/vmwgfx: Validate vmw_surface_metadata::array_size Greg Kroah-Hartman
` (290 subsequent siblings)
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From: Greg Kroah-Hartman @ 2026-07-30 14:11 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Lu Yao, Leo Li,
Mario Limonciello (AMD), Mario Limonciello
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Leo Li <sunpeng.li@amd.com>
commit fbbaca9e208733652828ea98d00f09f260a7770e upstream.
This line was lost when cping from amd-staging-drm-next to drm-fixes.
So add it back.
Cc: stable@vger.kernel.org
Fixes: 8382cd234981 ("drm/amd/display: consolidate DCN vblank/flip handling onto vupdate_no_lock")
Reported-by: Lu Yao <yaolu@kylinos.cn>
Signed-off-by: Leo Li <sunpeng.li@amd.com>
Reviewed-by: Mario Limonciello (AMD) <superm1@kernel.org>
Link: https://patch.msgid.link/20260723134450.13838-1-sunpeng.li@amd.com
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -3068,7 +3068,8 @@ static void dm_gpureset_toggle_interrupt
acrtc = get_crtc_by_otg_inst(
adev, state->stream_status[i].primary_otg_inst);
- if (acrtc && state->stream_status[i].plane_count != 0) {
+ if (acrtc && state->stream_status[i].plane_count != 0 &&
+ amdgpu_ip_version(adev, DCE_HWIP, 0) == 0) {
irq_source = IRQ_TYPE_PFLIP + acrtc->otg_inst;
rc = dc_interrupt_set(adev->dm.dc, irq_source, enable) ? 0 : -EBUSY;
if (rc)
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 390/675] drm/vmwgfx: Validate vmw_surface_metadata::array_size
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (388 preceding siblings ...)
2026-07-30 14:11 ` [PATCH 6.18 389/675] drm/amd/display: Fix missing DCE check in dm_gpureset_toggle_interrupts() Greg Kroah-Hartman
@ 2026-07-30 14:12 ` Greg Kroah-Hartman
2026-07-30 14:12 ` [PATCH 6.18 391/675] drm/vc4: Prevent shader BO mappings from becoming writable Greg Kroah-Hartman
` (289 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:12 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Zero Day Initiative, Ian Forbes,
Maaz Mombasawala, Zack Rusin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Ian Forbes <ian.forbes@broadcom.com>
commit a4f55260f7f7d4dc4d0ee55063dfb0c457b77991 upstream.
This field comes from userspace and should be validated against specific
limits depending on which Shader Model (SM) is available.
Fixes: 504901dbb0b5 ("drm/vmwgfx: Refactor surface_define to use vmw_surface_metadata")
Reported-by: Zero Day Initiative <zdi-disclosures@trendmicro.com>
Cc: stable@vger.kernel.org
Signed-off-by: Ian Forbes <ian.forbes@broadcom.com>
Reviewed-by: Maaz Mombasawala <maaz.mombasawala@broadcom.com>
Signed-off-by: Zack Rusin <zack.rusin@broadcom.com>
Link: https://patch.msgid.link/20260623193314.506257-1-ian.forbes@broadcom.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/vmwgfx/vmwgfx_surface.c | 22 +++++++++++++++++-----
1 file changed, 17 insertions(+), 5 deletions(-)
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_surface.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_surface.c
@@ -77,7 +77,7 @@ static int vmw_gb_surface_unbind(struct
static int vmw_gb_surface_destroy(struct vmw_resource *res);
static int
vmw_gb_surface_define_internal(struct drm_device *dev,
- struct drm_vmw_gb_surface_create_ext_req *req,
+ const struct drm_vmw_gb_surface_create_ext_req *req,
struct drm_vmw_gb_surface_create_rep *rep,
struct drm_file *file_priv);
static int
@@ -1503,7 +1503,7 @@ int vmw_gb_surface_reference_ext_ioctl(s
*/
static int
vmw_gb_surface_define_internal(struct drm_device *dev,
- struct drm_vmw_gb_surface_create_ext_req *req,
+ const struct drm_vmw_gb_surface_create_ext_req *req,
struct drm_vmw_gb_surface_create_rep *rep,
struct drm_file *file_priv)
{
@@ -1521,9 +1521,21 @@ vmw_gb_surface_define_internal(struct dr
req->base.svga3d_flags);
/* array_size must be null for non-GL3 host. */
- if (req->base.array_size > 0 && !has_sm4_context(dev_priv)) {
- VMW_DEBUG_USER("SM4 surface not supported.\n");
- return -EINVAL;
+ if (req->base.array_size > 0) {
+ if (has_sm5_context(dev_priv)) {
+ if (req->base.array_size > SVGA3D_SM5_MAX_SURFACE_ARRAYSIZE) {
+ VMW_DEBUG_USER("Invalid Surface Array Size.\n");
+ return -EINVAL;
+ }
+ } else if (has_sm4_context(dev_priv)) {
+ if (req->base.array_size > SVGA3D_SM4_MAX_SURFACE_ARRAYSIZE) {
+ VMW_DEBUG_USER("Invalid Surface Array Size.\n");
+ return -EINVAL;
+ }
+ } else {
+ VMW_DEBUG_USER("SM4+ surface not supported.\n");
+ return -EINVAL;
+ }
}
if (!has_sm4_1_context(dev_priv)) {
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 391/675] drm/vc4: Prevent shader BO mappings from becoming writable
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (389 preceding siblings ...)
2026-07-30 14:12 ` [PATCH 6.18 390/675] drm/vmwgfx: Validate vmw_surface_metadata::array_size Greg Kroah-Hartman
@ 2026-07-30 14:12 ` Greg Kroah-Hartman
2026-07-30 14:12 ` [PATCH 6.18 392/675] drm/gpusvm: Fix MM reference leak in drm_gpusvm_range_evict Greg Kroah-Hartman
` (288 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:12 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Sashiko, Linmao Li, Maíra Canal
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Linmao Li <lilinmao@kylinos.cn>
commit 0c9e6367639548307d3f578f6943ce72c9d39087 upstream.
vc4_gem_object_mmap() rejects a writable mapping of a validated shader
BO, but leaves VM_MAYWRITE set. Userspace can map the BO read-only and
then turn it writable with mprotect().
Validated shader BOs must stay read-only: the validator checks the
instructions once and the GPU trusts them afterwards. A writable
mapping lets userspace rewrite the code after validation, bypassing the
validator.
Clear VM_MAYWRITE on the read-only path so the mapping cannot be
upgraded, as i915 already does for its read-only objects.
Fixes: 463873d57014 ("drm/vc4: Add an API for creating GPU shaders in GEM BOs.")
Cc: stable@vger.kernel.org
Reported-by: Sashiko <sashiko-bot@kernel.org>
Closes: https://lore.kernel.org/dri-devel/20260720085554.B0AF01F000E9@smtp.kernel.org/
Signed-off-by: Linmao Li <lilinmao@kylinos.cn>
Link: https://patch.msgid.link/20260721011558.1672477-1-lilinmao@kylinos.cn
Reviewed-by: Maíra Canal <mcanal@igalia.com>
Signed-off-by: Maíra Canal <mcanal@igalia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/vc4/vc4_bo.c | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)
--- a/drivers/gpu/drm/vc4/vc4_bo.c
+++ b/drivers/gpu/drm/vc4/vc4_bo.c
@@ -733,9 +733,13 @@ static int vc4_gem_object_mmap(struct dr
{
struct vc4_bo *bo = to_vc4_bo(obj);
- if (bo->validated_shader && (vma->vm_flags & VM_WRITE)) {
- DRM_DEBUG("mmapping of shader BOs for writing not allowed.\n");
- return -EINVAL;
+ if (bo->validated_shader) {
+ if (vma->vm_flags & VM_WRITE) {
+ DRM_DEBUG("mmapping of shader BOs for writing not allowed.\n");
+ return -EINVAL;
+ }
+
+ vm_flags_clear(vma, VM_MAYWRITE);
}
mutex_lock(&bo->madv_lock);
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 392/675] drm/gpusvm: Fix MM reference leak in drm_gpusvm_range_evict
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (390 preceding siblings ...)
2026-07-30 14:12 ` [PATCH 6.18 391/675] drm/vc4: Prevent shader BO mappings from becoming writable Greg Kroah-Hartman
@ 2026-07-30 14:12 ` Greg Kroah-Hartman
2026-07-30 14:12 ` [PATCH 6.18 393/675] drm/v3d: Reach the GMP through the hub registers on V3D 7.x Greg Kroah-Hartman
` (287 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:12 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Matthew Brost, Himal Prasad Ghimiray
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Matthew Brost <matthew.brost@intel.com>
commit 847b371debf3c8c72384ab7b9a0c4123a74cc925 upstream.
If kvmalloc_array() fails in drm_gpusvm_range_evict(), the MM
reference acquired earlier is not released, resulting in a reference
leak.
Fix this by dropping the MM reference on the kvmalloc_array()
failure path.
Fixes: 99624bdff867 ("drm/gpusvm: Add support for GPU Shared Virtual Memory")
Cc: stable@vger.kernel.org
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com>
Link: https://patch.msgid.link/20260714170025.3487974-1-matthew.brost@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/drm_gpusvm.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--- a/drivers/gpu/drm/drm_gpusvm.c
+++ b/drivers/gpu/drm/drm_gpusvm.c
@@ -1566,8 +1566,10 @@ int drm_gpusvm_range_evict(struct drm_gp
return -EFAULT;
pfns = kvmalloc_array(npages, sizeof(*pfns), GFP_KERNEL);
- if (!pfns)
+ if (!pfns) {
+ mmput(mm);
return -ENOMEM;
+ }
hmm_range.hmm_pfns = pfns;
while (!time_after(jiffies, timeout)) {
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 393/675] drm/v3d: Reach the GMP through the hub registers on V3D 7.x
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (391 preceding siblings ...)
2026-07-30 14:12 ` [PATCH 6.18 392/675] drm/gpusvm: Fix MM reference leak in drm_gpusvm_range_evict Greg Kroah-Hartman
@ 2026-07-30 14:12 ` Greg Kroah-Hartman
2026-07-30 14:12 ` [PATCH 6.18 394/675] media: airspy: Return queued buffers on start_streaming() failure Greg Kroah-Hartman
` (286 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:12 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Iago Toral Quiroga, Maíra Canal
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Maíra Canal <mcanal@igalia.com>
commit f7df2da0d1c375c1c4c70e1e0b569592de0d6b73 upstream.
v3d_idle_axi() drains the GPU's memory interface for a safe powerdown by
using the V3D_GMP_CFG register. It reached both registers with the macros
V3D_CORE_READ and V3D_CORE_WRITE.
On V3D 7.x the GMP is no longer a per-core block; it lives in the hub
register region. Reaching it through the per-core register block addresses
the wrong region.
Select the hub accessors (V3D_{READ,WRITE}) for the GMP on V3D 7.x and
keep the per-core path for earlier generations.
Cc: stable@vger.kernel.org
Fixes: 0ad5bc1ce463 ("drm/v3d: fix up register addresses for V3D 7.x")
Link: https://patch.msgid.link/20260718-v3d-pm-axi-transactions-v1-1-4ecd7729ed70@igalia.com
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
Signed-off-by: Maíra Canal <mcanal@igalia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/v3d/v3d_gem.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
--- a/drivers/gpu/drm/v3d/v3d_gem.c
+++ b/drivers/gpu/drm/v3d/v3d_gem.c
@@ -45,6 +45,18 @@ v3d_init_hw_state(struct v3d_dev *v3d)
static void
v3d_idle_axi(struct v3d_dev *v3d, int core)
{
+ if (v3d->ver >= V3D_GEN_71) {
+ V3D_WRITE(V3D_GMP_CFG(v3d->ver), V3D_GMP_CFG_STOP_REQ);
+
+ if (wait_for((V3D_READ(V3D_GMP_STATUS(v3d->ver)) &
+ (V3D_GMP_STATUS_RD_COUNT_MASK |
+ V3D_GMP_STATUS_WR_COUNT_MASK |
+ V3D_GMP_STATUS_CFG_BUSY)) == 0, 100)) {
+ drm_err(&v3d->drm, "Failed to wait for safe GMP shutdown\n");
+ }
+ return;
+ }
+
V3D_CORE_WRITE(core, V3D_GMP_CFG(v3d->ver), V3D_GMP_CFG_STOP_REQ);
if (wait_for((V3D_CORE_READ(core, V3D_GMP_STATUS(v3d->ver)) &
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 394/675] media: airspy: Return queued buffers on start_streaming() failure
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (392 preceding siblings ...)
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@ 2026-07-30 14:12 ` Greg Kroah-Hartman
2026-07-30 14:12 ` [PATCH 6.18 395/675] media: amlogic-c3: Add validations for ae and awb config Greg Kroah-Hartman
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679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:12 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Valery Borovsky, Hans Verkuil
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Valery Borovsky <vebohr@gmail.com>
commit 04344d0b4929caa94c0df72f767752aa0935ef5d upstream.
The vb2 framework hands buffers to the driver via buf_queue() before
calling start_streaming(). If start_streaming() returns an error
without first returning those buffers via vb2_buffer_done(),
vb2_start_streaming() fires WARN_ON(owned_by_drv_count) and the queued
buffers leak.
airspy_start_streaming() returned -ENODEV early when the USB device had
been disconnected (s->udev == NULL) without returning any buffers that
buf_queue() had already accepted. Take v4l2_lock first and jump to the
existing err_clear_bit label, which already drains s->queued_bufs via
vb2_buffer_done(..., VB2_BUF_STATE_QUEUED) before unlocking.
This mirrors the uvcvideo fix in commit 4cf3b6fd54eb ("media: uvcvideo:
Return queued buffers on start_streaming() failure").
Fixes: 634fe5033951 ("[media] airspy: AirSpy SDR driver")
Cc: stable@vger.kernel.org
Signed-off-by: Valery Borovsky <vebohr@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/media/usb/airspy/airspy.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
--- a/drivers/media/usb/airspy/airspy.c
+++ b/drivers/media/usb/airspy/airspy.c
@@ -522,11 +522,13 @@ static int airspy_start_streaming(struct
dev_dbg(s->dev, "\n");
- if (!s->udev)
- return -ENODEV;
-
mutex_lock(&s->v4l2_lock);
+ if (!s->udev) {
+ ret = -ENODEV;
+ goto err_clear_bit;
+ }
+
s->sequence = 0;
set_bit(POWER_ON, &s->flags);
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 395/675] media: amlogic-c3: Add validations for ae and awb config
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (393 preceding siblings ...)
2026-07-30 14:12 ` [PATCH 6.18 394/675] media: airspy: Return queued buffers on start_streaming() failure Greg Kroah-Hartman
@ 2026-07-30 14:12 ` Greg Kroah-Hartman
2026-07-30 14:12 ` [PATCH 6.18 396/675] media: aspeed: fix missing of_reserved_mem_device_release() on probe failure Greg Kroah-Hartman
` (284 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:12 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Jacopo Mondi, Laurent Pinchart,
Ricardo Ribalda, Keke Li, Hans Verkuil
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Ricardo Ribalda <ribalda@chromium.org>
commit 9724164f71974a2a44a5e026614fbcc05bab6d91 upstream.
Avoid invalid memory access if the zones_num is bigger than
zone_weight.
This patch fixes the following smatch errors:
drivers/media/platform/amlogic/c3/isp/c3-isp-params.c:111 c3_isp_params_awb_wt() error: buffer overflow 'cfg->zone_weight' 768 <= u32max
drivers/media/platform/amlogic/c3/isp/c3-isp-params.c:111 c3_isp_params_awb_wt() error: buffer overflow 'cfg->zone_weight' 768 <= u32max
drivers/media/platform/amlogic/c3/isp/c3-isp-params.c:227 c3_isp_params_ae_wt() error: buffer overflow 'cfg->zone_weight' 255 <= u32max
drivers/media/platform/amlogic/c3/isp/c3-isp-params.c:227 c3_isp_params_ae_wt() error: buffer overflow 'cfg->zone_weight' 255 <= u32max
Cc: stable@vger.kernel.org
Fixes: fb2e135208f3 ("media: platform: Add C3 ISP driver")
Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>
Reviewed-by: Keke Li <keke.li@amlogic.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/media/platform/amlogic/c3/isp/c3-isp-params.c | 4 ++++
1 file changed, 4 insertions(+)
--- a/drivers/media/platform/amlogic/c3/isp/c3-isp-params.c
+++ b/drivers/media/platform/amlogic/c3/isp/c3-isp-params.c
@@ -107,6 +107,8 @@ static void c3_isp_params_awb_wt(struct
c3_isp_write(isp, ISP_AWB_BLK_WT_ADDR, 0);
zones_num = cfg->horiz_zones_num * cfg->vert_zones_num;
+ if (zones_num > C3_ISP_AWB_MAX_ZONES)
+ zones_num = C3_ISP_AWB_MAX_ZONES;
/* Need to write 8 weights at once */
for (i = 0; i < zones_num / 8; i++) {
@@ -223,6 +225,8 @@ static void c3_isp_params_ae_wt(struct c
c3_isp_write(isp, ISP_AE_BLK_WT_ADDR, 0);
zones_num = cfg->horiz_zones_num * cfg->vert_zones_num;
+ if (zones_num > C3_ISP_AE_MAX_ZONES)
+ zones_num = C3_ISP_AE_MAX_ZONES;
/* Need to write 8 weights at once */
for (i = 0; i < zones_num / 8; i++) {
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 396/675] media: aspeed: fix missing of_reserved_mem_device_release() on probe failure
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (394 preceding siblings ...)
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@ 2026-07-30 14:12 ` Greg Kroah-Hartman
2026-07-30 14:12 ` [PATCH 6.18 397/675] media: cec: seco: unregister adapter on IR " Greg Kroah-Hartman
` (283 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:12 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, David Carlier, Hans Verkuil
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: David Carlier <devnexen@gmail.com>
commit 253c8ef7d57da0c74db251f385324faaa5ae2257 upstream.
aspeed_video_init() calls of_reserved_mem_device_init() to associate
reserved memory regions with the device. When aspeed_video_setup_video()
subsequently fails in aspeed_video_probe(), the error path frees the
JPEG buffer and unprepares the clocks but does not release the reserved
memory association, leaking the rmem_assigned_device entry on the global
list.
The normal remove path already calls of_reserved_mem_device_release()
correctly; only the probe error path was missing it.
Add the missing of_reserved_mem_device_release() call to the
aspeed_video_setup_video() failure cleanup.
Fixes: d2b4387f3bdf ("media: platform: Add Aspeed Video Engine driver")
Cc: stable@vger.kernel.org
Signed-off-by: David Carlier <devnexen@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/media/platform/aspeed/aspeed-video.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/media/platform/aspeed/aspeed-video.c
+++ b/drivers/media/platform/aspeed/aspeed-video.c
@@ -2327,6 +2327,7 @@ static int aspeed_video_probe(struct pla
rc = aspeed_video_setup_video(video);
if (rc) {
aspeed_video_free_buf(video, &video->jpeg);
+ of_reserved_mem_device_release(&pdev->dev);
clk_unprepare(video->vclk);
clk_unprepare(video->eclk);
return rc;
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 397/675] media: cec: seco: unregister adapter on IR probe failure
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (395 preceding siblings ...)
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@ 2026-07-30 14:12 ` Greg Kroah-Hartman
2026-07-30 14:12 ` [PATCH 6.18 398/675] media: cedrus: clean up media device on " Greg Kroah-Hartman
` (282 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:12 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Myeonghun Pak, Hans Verkuil
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Myeonghun Pak <mhun512@gmail.com>
commit c3a78691be8245e52ced489f268e413f18061ac2 upstream.
If secocec_ir_probe() fails after cec_register_adapter() succeeds,
probe returns an error and the driver remove callback is not called.
The current unwind path unregisters the notifier and then falls through
to cec_delete_adapter(), which violates the CEC adapter lifetime rules
after a successful registration.
Add a registered-adapter unwind path that unregisters the notifier and
the adapter instead.
Fixes: daef95769b3a ("media: seco-cec: add Consumer-IR support")
Cc: stable@vger.kernel.org
Signed-off-by: Myeonghun Pak <mhun512@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/media/cec/platform/seco/seco-cec.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
--- a/drivers/media/cec/platform/seco/seco-cec.c
+++ b/drivers/media/cec/platform/seco/seco-cec.c
@@ -649,7 +649,7 @@ static int secocec_probe(struct platform
ret = secocec_ir_probe(secocec);
if (ret)
- goto err_notifier;
+ goto err_unregister_adapter;
platform_set_drvdata(pdev, secocec);
@@ -657,6 +657,10 @@ static int secocec_probe(struct platform
return ret;
+err_unregister_adapter:
+ cec_notifier_cec_adap_unregister(secocec->notifier, secocec->cec_adap);
+ cec_unregister_adapter(secocec->cec_adap);
+ goto err;
err_notifier:
cec_notifier_cec_adap_unregister(secocec->notifier, secocec->cec_adap);
err_delete_adapter:
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 398/675] media: cedrus: clean up media device on probe failure
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (396 preceding siblings ...)
2026-07-30 14:12 ` [PATCH 6.18 397/675] media: cec: seco: unregister adapter on IR " Greg Kroah-Hartman
@ 2026-07-30 14:12 ` Greg Kroah-Hartman
2026-07-30 14:12 ` [PATCH 6.18 399/675] media: cedrus: Fix missing cleanup in error path Greg Kroah-Hartman
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679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:12 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Paul Kocialkowski, Ijae Kim,
Myeonghun Pak, Nicolas Dufresne, Hans Verkuil
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Myeonghun Pak <mhun512@gmail.com>
commit 2c869b6969f3061cbbdab587f4c0a88bd7fc3cc9 upstream.
cedrus_probe() initializes the media device before registering the video
device, the media controller, and the media device. If any of those later
steps fails, probe returns without calling media_device_cleanup(), so the
media device internals initialized by media_device_init() are left behind.
Add a media-device cleanup label to the probe unwind path and route video
registration failures through it as well.
Fixes: 50e761516f2b8c ("media: platform: Add Cedrus VPU decoder driver")
Cc: stable@vger.kernel.org
Reviewed-by: Paul Kocialkowski <paulk@sys-base.io>
Co-developed-by: Ijae Kim <ae878000@gmail.com>
Signed-off-by: Ijae Kim <ae878000@gmail.com>
Signed-off-by: Myeonghun Pak <mhun512@gmail.com>
Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/staging/media/sunxi/cedrus/cedrus.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
--- a/drivers/staging/media/sunxi/cedrus/cedrus.c
+++ b/drivers/staging/media/sunxi/cedrus/cedrus.c
@@ -507,7 +507,7 @@ static int cedrus_probe(struct platform_
ret = video_register_device(vfd, VFL_TYPE_VIDEO, 0);
if (ret) {
v4l2_err(&dev->v4l2_dev, "Failed to register video device\n");
- goto err_m2m;
+ goto err_media;
}
v4l2_info(&dev->v4l2_dev,
@@ -533,7 +533,8 @@ err_m2m_mc:
v4l2_m2m_unregister_media_controller(dev->m2m_dev);
err_video:
video_unregister_device(&dev->vfd);
-err_m2m:
+err_media:
+ media_device_cleanup(&dev->mdev);
v4l2_m2m_release(dev->m2m_dev);
err_v4l2:
v4l2_device_unregister(&dev->v4l2_dev);
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 399/675] media: cedrus: Fix missing cleanup in error path
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (397 preceding siblings ...)
2026-07-30 14:12 ` [PATCH 6.18 398/675] media: cedrus: clean up media device on " Greg Kroah-Hartman
@ 2026-07-30 14:12 ` Greg Kroah-Hartman
2026-07-30 14:12 ` [PATCH 6.18 400/675] media: cedrus: skip invalid H.264 reference list entries Greg Kroah-Hartman
` (280 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:12 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Samuel Holland, Andrey Skvortsov,
Paul Kocialkowski, Nicolas Dufresne, Hans Verkuil
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Samuel Holland <samuel@sholland.org>
commit d99732334aaf33b9f93926b70b6a11c2cef3de39 upstream.
According to the documentation struct v4l2_fh has to be cleaned up with
v4l2_fh_exit() before being freed. [1]
Currently there is no actual bug here, when v4l2_fh_exit() isn't called.
v4l2_fh_exit() in this case only destroys internal mutex. But it may
change in the future, when v4l2_fh_init/v4l2_fh_exit will be enhanced.
1. https://docs.kernel.org/driver-api/media/v4l2-fh.html
Signed-off-by: Samuel Holland <samuel@sholland.org>
Signed-off-by: Andrey Skvortsov <andrej.skvortzov@gmail.com>
Fixes: 50e761516f2b ("media: platform: Add Cedrus VPU decoder driver")
Cc: stable@vger.kernel.org
Acked-by: Paul Kocialkowski <paulk@sys-base.io>
Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/staging/media/sunxi/cedrus/cedrus.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/staging/media/sunxi/cedrus/cedrus.c
+++ b/drivers/staging/media/sunxi/cedrus/cedrus.c
@@ -391,6 +391,7 @@ static int cedrus_open(struct file *file
err_m2m_release:
v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
err_free:
+ v4l2_fh_exit(&ctx->fh);
kfree(ctx);
mutex_unlock(&dev->dev_mutex);
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 400/675] media: cedrus: skip invalid H.264 reference list entries
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (398 preceding siblings ...)
2026-07-30 14:12 ` [PATCH 6.18 399/675] media: cedrus: Fix missing cleanup in error path Greg Kroah-Hartman
@ 2026-07-30 14:12 ` Greg Kroah-Hartman
2026-07-30 14:12 ` [PATCH 6.18 401/675] media: chips-media: wave5: Move src_buf Removal to finish_encode Greg Kroah-Hartman
` (279 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:12 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Pengpeng Hou, Nicolas Dufresne,
Jernej Skrabec, Chen-Yu Tsai, Hans Verkuil
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Pengpeng Hou <pengpeng@iscas.ac.cn>
commit 10358ea986c3c85516d1c8206486464f79d36e76 upstream.
Cedrus consumes H.264 ref_pic_list0/ref_pic_list1 entries from the
stateless slice control and later uses their indices to look up
decode->dpb[] in _cedrus_write_ref_list().
Rejecting such controls in cedrus_try_ctrl() would break existing
userspace, since stateless H.264 reference lists may legitimately carry
out-of-range indices for missing references. Instead, guard the actual
DPB lookup in Cedrus and skip entries whose indices do not fit the fixed
V4L2_H264_NUM_DPB_ENTRIES array.
This keeps the fix local to the driver use site and avoids out-of-bounds
reads from malformed or unsupported reference list entries.
Fixes: e000e1fa4bdbd ("media: uapi: h264: Update reference lists")
Cc: stable@vger.kernel.org
Signed-off-by: Pengpeng Hou <pengpeng@iscas.ac.cn>
Reviewed-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Acked-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Tested-by: Chen-Yu Tsai <wens@kernel.org>
Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/staging/media/sunxi/cedrus/cedrus_h264.c | 3 +++
1 file changed, 3 insertions(+)
--- a/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
+++ b/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
@@ -210,6 +210,9 @@ static void _cedrus_write_ref_list(struc
u8 dpb_idx;
dpb_idx = ref_list[i].index;
+ if (dpb_idx >= V4L2_H264_NUM_DPB_ENTRIES)
+ continue;
+
dpb = &decode->dpb[dpb_idx];
if (!(dpb->flags & V4L2_H264_DPB_ENTRY_FLAG_ACTIVE))
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 401/675] media: chips-media: wave5: Move src_buf Removal to finish_encode
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (399 preceding siblings ...)
2026-07-30 14:12 ` [PATCH 6.18 400/675] media: cedrus: skip invalid H.264 reference list entries Greg Kroah-Hartman
@ 2026-07-30 14:12 ` Greg Kroah-Hartman
2026-07-30 14:12 ` [PATCH 6.18 402/675] media: cx231xx: fix devres lifetime Greg Kroah-Hartman
` (278 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:12 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Brandon Brnich, Jackson Lee,
Nicolas Dufresne, Hans Verkuil
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Brandon Brnich <b-brnich@ti.com>
commit b20157147089a9c16a38c7810e2fe6f2df8e3277 upstream.
During encoder processing, there is a case where the IRQ response could
return the buffer back to userspace via v4l2_m2m_buf_done call. In this
time, userspace could queue up this same buffer before start_encode removes
the index from the ready queue. This would then lead to a case where the
buffer in the ready queue could be a self loop due to the
WRITE_ONCE(prev->next, new) call in __list_add.
When __list_del is finally called, the loop is already made so nothing
points back to ready queue list head and pointers are poisoned.
A buffer should not be marked as DONE before the buffer is removed from
m2m ready queue. Move removal entirely to finish_encode.
Fixes: 9707a6254a8a6 ("media: chips-media: wave5: Add the v4l2 layer")
Cc: stable@vger.kernel.org
Signed-off-by: Brandon Brnich <b-brnich@ti.com>
Tested-by: Jackson Lee <jackson.lee@chipsnmedia.com>
Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/media/platform/chips-media/wave5/wave5-vpu-enc.c | 29 ++-------------
1 file changed, 4 insertions(+), 25 deletions(-)
--- a/drivers/media/platform/chips-media/wave5/wave5-vpu-enc.c
+++ b/drivers/media/platform/chips-media/wave5/wave5-vpu-enc.c
@@ -226,13 +226,6 @@ static int start_encode(struct vpu_insta
} else {
dev_dbg(inst->dev->dev, "%s: wave5_vpu_enc_start_one_frame success\n",
__func__);
- /*
- * Remove the source buffer from the ready-queue now and finish
- * it in the videobuf2 framework once the index is returned by the
- * firmware in finish_encode
- */
- if (src_buf)
- v4l2_m2m_src_buf_remove_by_idx(m2m_ctx, src_buf->vb2_buf.index);
}
return 0;
@@ -259,27 +252,13 @@ static void wave5_vpu_enc_finish_encode(
__func__, enc_output_info.pic_type, enc_output_info.recon_frame_index,
enc_output_info.enc_src_idx, enc_output_info.enc_pic_byte, enc_output_info.pts);
- /*
- * The source buffer will not be found in the ready-queue as it has been
- * dropped after sending of the encode firmware command, locate it in
- * the videobuf2 queue directly
- */
if (enc_output_info.enc_src_idx >= 0) {
- struct vb2_buffer *vb = vb2_get_buffer(v4l2_m2m_get_src_vq(m2m_ctx),
- enc_output_info.enc_src_idx);
- if (vb->state != VB2_BUF_STATE_ACTIVE)
- dev_warn(inst->dev->dev,
- "%s: encoded buffer (%d) was not in ready queue %i.",
- __func__, enc_output_info.enc_src_idx, vb->state);
- else
- src_buf = to_vb2_v4l2_buffer(vb);
-
- if (src_buf) {
+ src_buf = v4l2_m2m_src_buf_remove_by_idx(m2m_ctx, enc_output_info.enc_src_idx);
+ if (!src_buf) {
+ dev_warn(inst->dev->dev, "%s: no source buffer found\n", __func__);
+ } else {
inst->timestamp = src_buf->vb2_buf.timestamp;
v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_DONE);
- } else {
- dev_warn(inst->dev->dev, "%s: no source buffer with index: %d found\n",
- __func__, enc_output_info.enc_src_idx);
}
}
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 402/675] media: cx231xx: fix devres lifetime
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (400 preceding siblings ...)
2026-07-30 14:12 ` [PATCH 6.18 401/675] media: chips-media: wave5: Move src_buf Removal to finish_encode Greg Kroah-Hartman
@ 2026-07-30 14:12 ` Greg Kroah-Hartman
2026-07-30 14:12 ` [PATCH 6.18 403/675] media: cx23885: add ioremap return check and cleanup Greg Kroah-Hartman
` (277 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:12 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Johan Hovold, Hans Verkuil
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Johan Hovold <johan@kernel.org>
commit 7d6358ab02866e5b7ed8d3a00805297617bbb0ec upstream.
USB drivers bind to USB interfaces and any device managed resources
should have their lifetime tied to the interface rather than parent USB
device. This avoids issues like memory leaks when drivers are unbound
without their devices being physically disconnected (e.g. on probe
deferral or configuration changes).
Fix the driver state lifetime so that it is released on driver unbind.
Fixes: 184a82784d50 ("[media] cx231xx: use devm_ functions to allocate memory")
Cc: stable@vger.kernel.org # 3.17
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/media/usb/cx231xx/cx231xx-cards.c | 16 +++++++++++-----
1 file changed, 11 insertions(+), 5 deletions(-)
--- a/drivers/media/usb/cx231xx/cx231xx-cards.c
+++ b/drivers/media/usb/cx231xx/cx231xx-cards.c
@@ -1575,7 +1575,8 @@ static int cx231xx_init_v4l2(struct cx23
dev->video_mode.end_point_addr,
dev->video_mode.num_alt);
- dev->video_mode.alt_max_pkt_size = devm_kmalloc_array(&udev->dev, 32, dev->video_mode.num_alt, GFP_KERNEL);
+ dev->video_mode.alt_max_pkt_size = devm_kmalloc_array(&interface->dev, 32,
+ dev->video_mode.num_alt, GFP_KERNEL);
if (dev->video_mode.alt_max_pkt_size == NULL)
return -ENOMEM;
@@ -1616,7 +1617,8 @@ static int cx231xx_init_v4l2(struct cx23
dev->vbi_mode.num_alt);
/* compute alternate max packet sizes for vbi */
- dev->vbi_mode.alt_max_pkt_size = devm_kmalloc_array(&udev->dev, 32, dev->vbi_mode.num_alt, GFP_KERNEL);
+ dev->vbi_mode.alt_max_pkt_size = devm_kmalloc_array(&interface->dev, 32,
+ dev->vbi_mode.num_alt, GFP_KERNEL);
if (dev->vbi_mode.alt_max_pkt_size == NULL)
return -ENOMEM;
@@ -1658,7 +1660,9 @@ static int cx231xx_init_v4l2(struct cx23
"sliced CC EndPoint Addr 0x%x, Alternate settings: %i\n",
dev->sliced_cc_mode.end_point_addr,
dev->sliced_cc_mode.num_alt);
- dev->sliced_cc_mode.alt_max_pkt_size = devm_kmalloc_array(&udev->dev, 32, dev->sliced_cc_mode.num_alt, GFP_KERNEL);
+ dev->sliced_cc_mode.alt_max_pkt_size = devm_kmalloc_array(&interface->dev, 32,
+ dev->sliced_cc_mode.num_alt,
+ GFP_KERNEL);
if (dev->sliced_cc_mode.alt_max_pkt_size == NULL)
return -ENOMEM;
@@ -1722,7 +1726,7 @@ static int cx231xx_usb_probe(struct usb_
udev = usb_get_dev(interface_to_usbdev(interface));
/* allocate memory for our device state and initialize it */
- dev = devm_kzalloc(&udev->dev, sizeof(*dev), GFP_KERNEL);
+ dev = devm_kzalloc(&interface->dev, sizeof(*dev), GFP_KERNEL);
if (dev == NULL) {
retval = -ENOMEM;
goto err_if;
@@ -1852,7 +1856,9 @@ static int cx231xx_usb_probe(struct usb_
dev->ts1_mode.end_point_addr,
dev->ts1_mode.num_alt);
- dev->ts1_mode.alt_max_pkt_size = devm_kmalloc_array(&udev->dev, 32, dev->ts1_mode.num_alt, GFP_KERNEL);
+ dev->ts1_mode.alt_max_pkt_size = devm_kmalloc_array(&interface->dev, 32,
+ dev->ts1_mode.num_alt,
+ GFP_KERNEL);
if (dev->ts1_mode.alt_max_pkt_size == NULL) {
retval = -ENOMEM;
goto err_video_alt;
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 403/675] media: cx23885: add ioremap return check and cleanup
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (401 preceding siblings ...)
2026-07-30 14:12 ` [PATCH 6.18 402/675] media: cx231xx: fix devres lifetime Greg Kroah-Hartman
@ 2026-07-30 14:12 ` Greg Kroah-Hartman
2026-07-30 14:12 ` [PATCH 6.18 404/675] media: i2c: alvium: fix critical pointer access in alvium_ctrl_init Greg Kroah-Hartman
` (276 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:12 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Wang Jun, Hans Verkuil
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Wang Jun <1742789905@qq.com>
commit a0701e387b46e2481c05b47f1235b954bfc2af3e upstream.
Add a check for the return value of pci_ioremap_bar()
in cx23885_dev_setup().
If ioremap for BAR0 fails, release the already allocated
PCI memory region,
decrement the device count, and return -ENODEV.
This prevents a potential null pointer dereference and
ensures proper cleanup
on memory mapping failure.
Fixes: d19770e5178a ("V4L/DVB (6150): Add CX23885/CX23887 PCIe bridge driver")
Cc: stable@vger.kernel.org
Signed-off-by: Wang Jun <1742789905@qq.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/media/pci/cx23885/cx23885-core.c | 14 ++++++++++++--
1 file changed, 12 insertions(+), 2 deletions(-)
--- a/drivers/media/pci/cx23885/cx23885-core.c
+++ b/drivers/media/pci/cx23885/cx23885-core.c
@@ -990,8 +990,12 @@ static int cx23885_dev_setup(struct cx23
}
/* PCIe stuff */
- dev->lmmio = ioremap(pci_resource_start(dev->pci, 0),
- pci_resource_len(dev->pci, 0));
+ dev->lmmio = pci_ioremap_bar(dev->pci, 0);
+ if (!dev->lmmio) {
+ dev_err(&dev->pci->dev, "CORE %s: can't ioremap MMIO memory\n",
+ dev->name);
+ goto err_release_region;
+ }
dev->bmmio = (u8 __iomem *)dev->lmmio;
@@ -1096,6 +1100,12 @@ static int cx23885_dev_setup(struct cx23
}
return 0;
+
+err_release_region:
+ release_mem_region(pci_resource_start(dev->pci, 0),
+ pci_resource_len(dev->pci, 0));
+ cx23885_devcount--;
+ return -ENODEV;
}
static void cx23885_dev_unregister(struct cx23885_dev *dev)
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 404/675] media: i2c: alvium: fix critical pointer access in alvium_ctrl_init
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (402 preceding siblings ...)
2026-07-30 14:12 ` [PATCH 6.18 403/675] media: cx23885: add ioremap return check and cleanup Greg Kroah-Hartman
@ 2026-07-30 14:12 ` Greg Kroah-Hartman
2026-07-30 14:12 ` [PATCH 6.18 405/675] media: imx219: Fix maximum frame length in lines Greg Kroah-Hartman
` (275 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:12 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Martin Hecht, Sakari Ailus
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Martin Hecht <mhecht73@gmail.com>
commit 4f6f28ff24709710c08557c127b3e4c3fb1b4159 upstream.
The current implementation of alvium_ctrl_init creates several controls in
function alvium_ctrl_init and uses the returned pointer without check. That
can cause write access over NULL-pointer for several controls. The reworked
code checks the pointers before adding flags.
Fixes: 0a7af872915e ("media: i2c: Add support for alvium camera")
Cc: stable@vger.kernel.org
Signed-off-by: Martin Hecht <mhecht73@gmail.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/media/i2c/alvium-csi2.c | 21 ++++++++++++++-------
1 file changed, 14 insertions(+), 7 deletions(-)
--- a/drivers/media/i2c/alvium-csi2.c
+++ b/drivers/media/i2c/alvium-csi2.c
@@ -2100,20 +2100,21 @@ static int alvium_ctrl_init(struct alviu
V4L2_CID_PIXEL_RATE, 0,
ALVIUM_DEFAULT_PIXEL_RATE_MHZ, 1,
ALVIUM_DEFAULT_PIXEL_RATE_MHZ);
- ctrls->pixel_rate->flags |= V4L2_CTRL_FLAG_READ_ONLY;
/* Link freq is fixed */
ctrls->link_freq = v4l2_ctrl_new_int_menu(hdl, ops,
V4L2_CID_LINK_FREQ,
0, 0, &alvium->link_freq);
- ctrls->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY;
+ if (ctrls->link_freq)
+ ctrls->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY;
/* Auto/manual white balance */
if (alvium->avail_ft.auto_whiteb) {
ctrls->auto_wb = v4l2_ctrl_new_std(hdl, ops,
V4L2_CID_AUTO_WHITE_BALANCE,
0, 1, 1, 1);
- v4l2_ctrl_auto_cluster(3, &ctrls->auto_wb, 0, false);
+ if (ctrls->auto_wb)
+ v4l2_ctrl_auto_cluster(3, &ctrls->auto_wb, 0, false);
}
ctrls->blue_balance = v4l2_ctrl_new_std(hdl, ops,
@@ -2122,6 +2123,7 @@ static int alvium_ctrl_init(struct alviu
alvium->max_bbalance,
alvium->inc_bbalance,
alvium->dft_bbalance);
+
ctrls->red_balance = v4l2_ctrl_new_std(hdl, ops,
V4L2_CID_RED_BALANCE,
alvium->min_rbalance,
@@ -2136,7 +2138,9 @@ static int alvium_ctrl_init(struct alviu
V4L2_CID_EXPOSURE_AUTO,
V4L2_EXPOSURE_MANUAL, 0,
V4L2_EXPOSURE_AUTO);
- v4l2_ctrl_auto_cluster(2, &ctrls->auto_exp, 1, true);
+ if (ctrls->auto_exp)
+ v4l2_ctrl_auto_cluster(2, &ctrls->auto_exp,
+ V4L2_EXPOSURE_MANUAL, true);
}
ctrls->exposure = v4l2_ctrl_new_std(hdl, ops,
@@ -2145,14 +2149,16 @@ static int alvium_ctrl_init(struct alviu
alvium->max_exp,
alvium->inc_exp,
alvium->dft_exp);
- ctrls->exposure->flags |= V4L2_CTRL_FLAG_VOLATILE;
+ if (ctrls->exposure)
+ ctrls->exposure->flags |= V4L2_CTRL_FLAG_VOLATILE;
/* Auto/manual gain */
if (alvium->avail_ft.auto_gain) {
ctrls->auto_gain = v4l2_ctrl_new_std(hdl, ops,
V4L2_CID_AUTOGAIN,
0, 1, 1, 1);
- v4l2_ctrl_auto_cluster(2, &ctrls->auto_gain, 0, true);
+ if (ctrls->auto_gain)
+ v4l2_ctrl_auto_cluster(2, &ctrls->auto_gain, 0, true);
}
if (alvium->avail_ft.gain) {
@@ -2162,7 +2168,8 @@ static int alvium_ctrl_init(struct alviu
alvium->max_gain,
alvium->inc_gain,
alvium->dft_gain);
- ctrls->gain->flags |= V4L2_CTRL_FLAG_VOLATILE;
+ if (ctrls->gain)
+ ctrls->gain->flags |= V4L2_CTRL_FLAG_VOLATILE;
}
if (alvium->avail_ft.sat)
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 405/675] media: imx219: Fix maximum frame length in lines
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (403 preceding siblings ...)
2026-07-30 14:12 ` [PATCH 6.18 404/675] media: i2c: alvium: fix critical pointer access in alvium_ctrl_init Greg Kroah-Hartman
@ 2026-07-30 14:12 ` Greg Kroah-Hartman
2026-07-30 14:12 ` [PATCH 6.18 406/675] media: intel/ipu6: Improve DWC PHY HSFREQRANGE band selection for overlapping ranges Greg Kroah-Hartman
` (274 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:12 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Sakari Ailus, Dave Stevenson,
Laurent Pinchart
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Sakari Ailus <sakari.ailus@linux.intel.com>
commit 2c4f1ba7354312ad2d6e34e70a518a51a9344715 upstream.
The driver used the maximum frame length in lines value of 0xffff, but the
maximum appears to be 0xfffe instead. Fix it.
Fixes: 1283b3b8f82b ("media: i2c: Add driver for Sony IMX219 sensor")
Cc: stable@vger.kernel.org
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/media/i2c/imx219.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/media/i2c/imx219.c
+++ b/drivers/media/i2c/imx219.c
@@ -71,7 +71,7 @@
/* V_TIMING internal */
#define IMX219_REG_FRM_LENGTH_A CCI_REG16(0x0160)
-#define IMX219_FLL_MAX 0xffff
+#define IMX219_FLL_MAX 0xfffe
#define IMX219_VBLANK_MIN 32
#define IMX219_REG_LINE_LENGTH_A CCI_REG16(0x0162)
#define IMX219_LLP_MIN 0x0d78
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 406/675] media: intel/ipu6: Improve DWC PHY HSFREQRANGE band selection for overlapping ranges
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (404 preceding siblings ...)
2026-07-30 14:12 ` [PATCH 6.18 405/675] media: imx219: Fix maximum frame length in lines Greg Kroah-Hartman
@ 2026-07-30 14:12 ` Greg Kroah-Hartman
2026-07-30 14:12 ` [PATCH 6.18 407/675] media: iris: Fix use IRQF_NO_AUTOEN when requesting the IRQ Greg Kroah-Hartman
` (273 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:12 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Marco Nenciarini, Sakari Ailus
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Marco Nenciarini <mnencia@kcore.it>
commit 477620dccf3e9481ed6ae67cb5c747f25751c531 upstream.
The get_hsfreq_by_mbps() function searches the freqranges[] table
backward (from highest to lowest index). Because adjacent frequency
bands overlap, a data rate that falls in the overlap region always
lands on the higher-indexed band.
For data rates up to 1500 Mbps (index 42) every band uses
osc_freq_target 335. Starting at index 43 (1461-1640 Mbps) the
osc_freq_target drops to 208. A sensor running at 1498 Mbps sits in
the overlap between index 42 (1414-1588, osc 335) and index 43
(1461-1640, osc 208). The backward search picks index 43, programming
the lower osc_freq_target of 208 instead of the optimal 335.
This causes DDL lock instability and CSI-2 CRC errors on affected
configurations, such as the OmniVision OV08X40 sensor on Intel Arrow
Lake platforms (Dell Pro Max 16).
Rewrite get_hsfreq_by_mbps() to select the optimal band:
1. Among bands whose min/max range covers the data rate, prefer
the one with the higher osc_freq_target.
2. If osc_freq_target is equal, prefer the band whose default_mbps
is closest to the requested rate.
Since the frequency ranges are monotonically increasing, the loop
exits early once min exceeds the requested rate.
For 1498 Mbps this now correctly selects index 42 (osc_freq_target
335, range 1414-1588) instead of index 43 (osc_freq_target 208,
range 1461-1640).
Fixes: 1e7eeb301696 ("media: intel/ipu6: add the CSI2 DPHY implementation")
Cc: stable@vger.kernel.org
Signed-off-by: Marco Nenciarini <mnencia@kcore.it>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/media/pci/intel/ipu6/ipu6-isys-dwc-phy.c | 24 +++++++++++++++++------
1 file changed, 18 insertions(+), 6 deletions(-)
--- a/drivers/media/pci/intel/ipu6/ipu6-isys-dwc-phy.c
+++ b/drivers/media/pci/intel/ipu6/ipu6-isys-dwc-phy.c
@@ -288,15 +288,27 @@ static const struct dwc_dphy_freq_range
static u16 get_hsfreq_by_mbps(u32 mbps)
{
- unsigned int i = DPHY_FREQ_RANGE_NUM;
+ u16 best = DPHY_FREQ_RANGE_INVALID_INDEX;
+ unsigned int i;
- while (i--) {
- if (freqranges[i].default_mbps == mbps ||
- (mbps >= freqranges[i].min && mbps <= freqranges[i].max))
- return i;
+ for (i = 0; i < DPHY_FREQ_RANGE_NUM; i++) {
+ if (mbps > freqranges[i].max)
+ continue;
+
+ if (mbps < freqranges[i].min)
+ break;
+
+ if (best == DPHY_FREQ_RANGE_INVALID_INDEX ||
+ freqranges[i].osc_freq_target >
+ freqranges[best].osc_freq_target ||
+ (freqranges[i].osc_freq_target ==
+ freqranges[best].osc_freq_target &&
+ abs((int)mbps - (int)freqranges[i].default_mbps) <
+ abs((int)mbps - (int)freqranges[best].default_mbps)))
+ best = i;
}
- return DPHY_FREQ_RANGE_INVALID_INDEX;
+ return best;
}
static int ipu6_isys_dwc_phy_config(struct ipu6_isys *isys,
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 407/675] media: iris: Fix use IRQF_NO_AUTOEN when requesting the IRQ
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (405 preceding siblings ...)
2026-07-30 14:12 ` [PATCH 6.18 406/675] media: intel/ipu6: Improve DWC PHY HSFREQRANGE band selection for overlapping ranges Greg Kroah-Hartman
@ 2026-07-30 14:12 ` Greg Kroah-Hartman
2026-07-30 14:12 ` [PATCH 6.18 408/675] media: marvell-cam: fix missing pci_disable_device() on remove Greg Kroah-Hartman
` (272 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:12 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Konrad Dybcio, Dikshita Agarwal,
Dmitry Baryshkov, Bryan ODonoghue
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
commit 45ac2230f929b9f0fae899c4a5c6bf763250fc13 upstream.
Requesting the IRQ and then immediately disabling it is fragile as it
leaves a window when the IRQ is still enabled although the underlying
device might be not completely setup for IRQ handling. Pass
IRQF_NO_AUTOEN instead of calling disable_irq_nosync().
Fixes: fb583a214337 ("media: iris: introduce host firmware interface with necessary hooks")
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Reviewed-by: Dikshita Agarwal <dikshita.agarwal@oss.qualcomm.com>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
[bod: Appended Fix to patch title for -stable clarity]
[bod: Added cc stable for backporting]
Cc: stable@vger.kernel.org
Signed-off-by: Bryan O'Donoghue <bod@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/media/platform/qcom/iris/iris_probe.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
--- a/drivers/media/platform/qcom/iris/iris_probe.c
+++ b/drivers/media/platform/qcom/iris/iris_probe.c
@@ -256,12 +256,12 @@ static int iris_probe(struct platform_de
core->iris_platform_data = of_device_get_match_data(core->dev);
ret = devm_request_threaded_irq(core->dev, core->irq, iris_hfi_isr,
- iris_hfi_isr_handler, IRQF_TRIGGER_HIGH, "iris", core);
+ iris_hfi_isr_handler,
+ IRQF_TRIGGER_HIGH | IRQF_NO_AUTOEN,
+ "iris", core);
if (ret)
return ret;
- disable_irq_nosync(core->irq);
-
iris_init_ops(core);
core->iris_platform_data->init_hfi_command_ops(core);
core->iris_platform_data->init_hfi_response_ops(core);
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 408/675] media: marvell-cam: fix missing pci_disable_device() on remove
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (406 preceding siblings ...)
2026-07-30 14:12 ` [PATCH 6.18 407/675] media: iris: Fix use IRQF_NO_AUTOEN when requesting the IRQ Greg Kroah-Hartman
@ 2026-07-30 14:12 ` Greg Kroah-Hartman
2026-07-30 14:12 ` [PATCH 6.18 409/675] media: meson: vdec: Fix memory leak in error path of vdec_open Greg Kroah-Hartman
` (271 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:12 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Guangshuo Li, Hans Verkuil
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Guangshuo Li <lgs201920130244@gmail.com>
commit 033ff0420e4c9c240ae5523fff39770298efa964 upstream.
During manual code audit, we found that cafe_pci_probe() enables the
PCI device with pci_enable_device(), and its probe error path properly
calls pci_disable_device() on failure.
However, cafe_pci_remove() tears down the controller and frees the
driver data without disabling the PCI device, leaving the remove path
inconsistent with probe cleanup.
Add the missing pci_disable_device() call to cafe_pci_remove().
Fixes: abfa3df36c01 ("[media] marvell-cam: Separate out the Marvell camera core")
Cc: stable@vger.kernel.org
Signed-off-by: Guangshuo Li <lgs201920130244@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/media/platform/marvell/cafe-driver.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/media/platform/marvell/cafe-driver.c
+++ b/drivers/media/platform/marvell/cafe-driver.c
@@ -609,6 +609,7 @@ static void cafe_pci_remove(struct pci_d
return;
}
cafe_shutdown(cam);
+ pci_disable_device(pdev);
kfree(cam);
}
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 409/675] media: meson: vdec: Fix memory leak in error path of vdec_open
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (407 preceding siblings ...)
2026-07-30 14:12 ` [PATCH 6.18 408/675] media: marvell-cam: fix missing pci_disable_device() on remove Greg Kroah-Hartman
@ 2026-07-30 14:12 ` Greg Kroah-Hartman
2026-07-30 14:12 ` [PATCH 6.18 410/675] media: msi2500: Return queued buffers on start_streaming() failure Greg Kroah-Hartman
` (270 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:12 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Anand Moon, Nicolas Dufresne,
Hans Verkuil
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Anand Moon <linux.amoon@gmail.com>
commit 940f161f734b25f175a95d2684c2021f6323693a upstream.
The vdec_open() function previously jumped directly to
err_m2m_release when vdec_init_ctrls() failed, skipping
release of the m2m context. This caused a resource leak.
Fix it by introducing a proper err_m2m_ctx_release label
that calls v4l2_m2m_ctx_release(sess->m2m_ctx) before
releasing the m2m device.
This was identified via kmemleak:
unreferenced object 0xffff0000205d6878 (size 8):
comm "v4l_id", pid 5289, jiffies 4294938580
hex dump (first 8 bytes):
40 d2 49 18 00 00 ff ff @.I.....
backtrace (crc d3204599):
kmemleak_alloc+0xc8/0xf0
__kvmalloc_node_noprof+0x60c/0x850
v4l2_ctrl_handler_init_class+0x1b4/0x2e8 [videodev]
vdec_open+0x1f4/0x788 [meson_vdec]
v4l2_open+0x144/0x460 [videodev]
chrdev_open+0x1ac/0x500
do_dentry_open+0x3f0/0xfe8
vfs_open+0x68/0x320
do_open+0x2d8/0x9a8
path_openat+0x1d0/0x4f0
do_filp_open+0x190/0x380
do_sys_openat2+0xf8/0x1b0
__arm64_sys_openat+0x13c/0x1e8
invoke_syscall+0xdc/0x268
el0_svc_common.constprop.0+0x178/0x258
do_el0_svc+0x4c/0x70
Fixes: 3e7f51bd9607 ("media: meson: add v4l2 m2m video decoder driver")
Cc: stable@vger.kernel.org
Signed-off-by: Anand Moon <linux.amoon@gmail.com>
Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/staging/media/meson/vdec/vdec.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--- a/drivers/staging/media/meson/vdec/vdec.c
+++ b/drivers/staging/media/meson/vdec/vdec.c
@@ -889,7 +889,7 @@ static int vdec_open(struct file *file)
ret = vdec_init_ctrls(sess);
if (ret)
- goto err_m2m_release;
+ goto err_m2m_ctx_release;
sess->pixfmt_cap = formats[0].pixfmts_cap[0];
sess->fmt_out = &formats[0];
@@ -913,6 +913,8 @@ static int vdec_open(struct file *file)
return 0;
+err_m2m_ctx_release:
+ v4l2_m2m_ctx_release(sess->m2m_ctx);
err_m2m_release:
v4l2_m2m_release(sess->m2m_dev);
err_free_sess:
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 410/675] media: msi2500: Return queued buffers on start_streaming() failure
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (408 preceding siblings ...)
2026-07-30 14:12 ` [PATCH 6.18 409/675] media: meson: vdec: Fix memory leak in error path of vdec_open Greg Kroah-Hartman
@ 2026-07-30 14:12 ` Greg Kroah-Hartman
2026-07-30 14:12 ` [PATCH 6.18 411/675] media: nuvoton: npcm-video: fix error handling in npcm_video_init() Greg Kroah-Hartman
` (269 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:12 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Valery Borovsky, Hans Verkuil
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Valery Borovsky <vebohr@gmail.com>
commit 7201c17786a498497bca57752883b90914d405ac upstream.
The vb2 framework hands buffers to the driver via buf_queue() before
calling start_streaming(). If start_streaming() returns an error
without first returning those buffers via vb2_buffer_done(),
vb2_start_streaming() fires WARN_ON(owned_by_drv_count) and the queued
buffers leak.
msi2500_start_streaming() had five error paths that all hit this trap
and were further tangled by ret-overwriting between calls:
- -ENODEV when the USB device was already disconnected
- -ERESTARTSYS when mutex_lock_interruptible() was interrupted
- msi2500_set_usb_adc() failure: ret was silently overwritten by
the next call (msi2500_isoc_init), so the error was lost entirely
- msi2500_isoc_init() failure: cleanup_queued_bufs was called, but
the function then fell through to msi2500_ctrl_msg() and again
masked the original error by overwriting ret
- msi2500_ctrl_msg(CMD_START_STREAMING) failure: no cleanup at all,
leaving isoc URBs submitted with no way for the driver to consume
them
Consolidate the error paths into a small goto chain. Every failure
now stops the function, drains the queued-buffer list, and returns
the real error code. The ctrl_msg failure path also rolls back the
preceding msi2500_isoc_init() via msi2500_isoc_cleanup() before
unlocking and draining.
The cleanup helper takes a vb2_buffer_state argument so that the
start_streaming error paths can pass VB2_BUF_STATE_QUEUED (as
expected by userspace on start_streaming failure) while stop_streaming
keeps its existing VB2_BUF_STATE_ERROR semantics.
This mirrors the uvcvideo fix in commit 4cf3b6fd54eb ("media: uvcvideo:
Return queued buffers on start_streaming() failure").
Fixes: 977e444f59ad ("[media] Mirics MSi3101 SDR Dongle driver")
Cc: stable@vger.kernel.org
Signed-off-by: Valery Borovsky <vebohr@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/media/usb/msi2500/msi2500.c | 32 ++++++++++++++++++++++++--------
1 file changed, 24 insertions(+), 8 deletions(-)
--- a/drivers/media/usb/msi2500/msi2500.c
+++ b/drivers/media/usb/msi2500/msi2500.c
@@ -541,7 +541,8 @@ static int msi2500_isoc_init(struct msi2
}
/* Must be called with vb_queue_lock hold */
-static void msi2500_cleanup_queued_bufs(struct msi2500_dev *dev)
+static void msi2500_cleanup_queued_bufs(struct msi2500_dev *dev,
+ enum vb2_buffer_state state)
{
unsigned long flags;
@@ -554,7 +555,7 @@ static void msi2500_cleanup_queued_bufs(
buf = list_entry(dev->queued_bufs.next,
struct msi2500_frame_buf, list);
list_del(&buf->list);
- vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
+ vb2_buffer_done(&buf->vb.vb2_buf, state);
}
spin_unlock_irqrestore(&dev->queued_bufs_lock, flags);
}
@@ -830,25 +831,40 @@ static int msi2500_start_streaming(struc
dev_dbg(dev->dev, "\n");
- if (!dev->udev)
- return -ENODEV;
+ if (!dev->udev) {
+ ret = -ENODEV;
+ goto err_cleanup;
+ }
- if (mutex_lock_interruptible(&dev->v4l2_lock))
- return -ERESTARTSYS;
+ if (mutex_lock_interruptible(&dev->v4l2_lock)) {
+ ret = -ERESTARTSYS;
+ goto err_cleanup;
+ }
/* wake-up tuner */
v4l2_subdev_call(dev->v4l2_subdev, core, s_power, 1);
ret = msi2500_set_usb_adc(dev);
+ if (ret)
+ goto err_unlock_cleanup;
ret = msi2500_isoc_init(dev);
if (ret)
- msi2500_cleanup_queued_bufs(dev);
+ goto err_unlock_cleanup;
ret = msi2500_ctrl_msg(dev, CMD_START_STREAMING, 0);
+ if (ret)
+ goto err_isoc_cleanup;
mutex_unlock(&dev->v4l2_lock);
+ return 0;
+err_isoc_cleanup:
+ msi2500_isoc_cleanup(dev);
+err_unlock_cleanup:
+ mutex_unlock(&dev->v4l2_lock);
+err_cleanup:
+ msi2500_cleanup_queued_bufs(dev, VB2_BUF_STATE_QUEUED);
return ret;
}
@@ -863,7 +879,7 @@ static void msi2500_stop_streaming(struc
if (dev->udev)
msi2500_isoc_cleanup(dev);
- msi2500_cleanup_queued_bufs(dev);
+ msi2500_cleanup_queued_bufs(dev, VB2_BUF_STATE_ERROR);
/* according to tests, at least 700us delay is required */
msleep(20);
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 411/675] media: nuvoton: npcm-video: fix error handling in npcm_video_init()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (409 preceding siblings ...)
2026-07-30 14:12 ` [PATCH 6.18 410/675] media: msi2500: Return queued buffers on start_streaming() failure Greg Kroah-Hartman
@ 2026-07-30 14:12 ` Greg Kroah-Hartman
2026-07-30 14:12 ` [PATCH 6.18 412/675] media: nuvoton: npcm-video: fix memory leaks in probe and remove Greg Kroah-Hartman
` (268 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:12 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, David Carlier, Hans Verkuil
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: David Carlier <devnexen@gmail.com>
commit 60ca00792bce46ec170c7ed101f376186d4cf8a9 upstream.
npcm_video_init() has two error handling issues after
of_reserved_mem_device_init() is called:
When dma_set_mask_and_coherent() fails, the function releases the
reserved memory but does not return, allowing execution to fall through
into npcm_video_ece_init() with a failed DMA configuration.
When npcm_video_ece_init() fails, the function returns an error without
calling of_reserved_mem_device_release(), leaking the reserved memory
association.
Fix both by adding the missing return after the DMA mask failure and
adding the missing of_reserved_mem_device_release() call on the ECE init
error path.
Fixes: 46c15a4ff1f4 ("media: nuvoton: Add driver for NPCM video capture and encoding engine")
Cc: stable@vger.kernel.org
Signed-off-by: David Carlier <devnexen@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/media/platform/nuvoton/npcm-video.c | 2 ++
1 file changed, 2 insertions(+)
--- a/drivers/media/platform/nuvoton/npcm-video.c
+++ b/drivers/media/platform/nuvoton/npcm-video.c
@@ -1720,10 +1720,12 @@ static int npcm_video_init(struct npcm_v
if (rc) {
dev_err(dev, "Failed to set DMA mask\n");
of_reserved_mem_device_release(dev);
+ return rc;
}
rc = npcm_video_ece_init(video);
if (rc) {
+ of_reserved_mem_device_release(dev);
dev_err(dev, "Failed to initialize ECE\n");
return rc;
}
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 412/675] media: nuvoton: npcm-video: fix memory leaks in probe and remove
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (410 preceding siblings ...)
2026-07-30 14:12 ` [PATCH 6.18 411/675] media: nuvoton: npcm-video: fix error handling in npcm_video_init() Greg Kroah-Hartman
@ 2026-07-30 14:12 ` Greg Kroah-Hartman
2026-07-30 14:12 ` [PATCH 6.18 413/675] media: nxp: imx8-isi: Add missing v4l2_subdev_cleanup() in crossbar and pipe Greg Kroah-Hartman
` (267 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:12 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, David Carlier, Hans Verkuil
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: David Carlier <devnexen@gmail.com>
commit 50cc0e547da50b887e63dfa1ad203cd5b735d01e upstream.
npcm_video_probe() allocates the npcm_video structure with kzalloc_obj()
but never frees it on any probe error path or in npcm_video_remove(),
leaking the allocation on every failed probe and every normal unbind.
Additionally, when npcm_video_setup_video() fails, the reserved memory
association established by of_reserved_mem_device_init() in
npcm_video_init() is not released, leaking the rmem_assigned_device
entry on the global list.
Fix both by adding kfree(video) to all probe error paths and to
npcm_video_remove(), and adding the missing
of_reserved_mem_device_release() call when npcm_video_setup_video()
fails.
Fixes: 46c15a4ff1f4 ("media: nuvoton: Add driver for NPCM video capture and encoding engine")
Cc: stable@vger.kernel.org
Signed-off-by: David Carlier <devnexen@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/media/platform/nuvoton/npcm-video.c | 32 ++++++++++++++++++++--------
1 file changed, 23 insertions(+), 9 deletions(-)
--- a/drivers/media/platform/nuvoton/npcm-video.c
+++ b/drivers/media/platform/nuvoton/npcm-video.c
@@ -1750,42 +1750,55 @@ static int npcm_video_probe(struct platf
regs = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(regs)) {
dev_err(&pdev->dev, "Failed to parse VCD reg in DTS\n");
- return PTR_ERR(regs);
+ rc = PTR_ERR(regs);
+ goto err_free;
}
video->vcd_regmap = devm_regmap_init_mmio(&pdev->dev, regs,
&npcm_video_regmap_cfg);
if (IS_ERR(video->vcd_regmap)) {
dev_err(&pdev->dev, "Failed to initialize VCD regmap\n");
- return PTR_ERR(video->vcd_regmap);
+ rc = PTR_ERR(video->vcd_regmap);
+ goto err_free;
}
video->reset = devm_reset_control_get(&pdev->dev, NULL);
if (IS_ERR(video->reset)) {
dev_err(&pdev->dev, "Failed to get VCD reset control in DTS\n");
- return PTR_ERR(video->reset);
+ rc = PTR_ERR(video->reset);
+ goto err_free;
}
video->gcr_regmap = syscon_regmap_lookup_by_phandle(pdev->dev.of_node,
"nuvoton,sysgcr");
- if (IS_ERR(video->gcr_regmap))
- return PTR_ERR(video->gcr_regmap);
+ if (IS_ERR(video->gcr_regmap)) {
+ rc = PTR_ERR(video->gcr_regmap);
+ goto err_free;
+ }
video->gfx_regmap = syscon_regmap_lookup_by_phandle(pdev->dev.of_node,
"nuvoton,sysgfxi");
- if (IS_ERR(video->gfx_regmap))
- return PTR_ERR(video->gfx_regmap);
+ if (IS_ERR(video->gfx_regmap)) {
+ rc = PTR_ERR(video->gfx_regmap);
+ goto err_free;
+ }
rc = npcm_video_init(video);
if (rc)
- return rc;
+ goto err_free;
rc = npcm_video_setup_video(video);
if (rc)
- return rc;
+ goto err_release_mem;
dev_info(video->dev, "NPCM video driver probed\n");
return 0;
+
+err_release_mem:
+ of_reserved_mem_device_release(&pdev->dev);
+err_free:
+ kfree(video);
+ return rc;
}
static void npcm_video_remove(struct platform_device *pdev)
@@ -1800,6 +1813,7 @@ static void npcm_video_remove(struct pla
v4l2_device_unregister(v4l2_dev);
if (video->ece.enable)
npcm_video_ece_stop(video);
+ kfree(video);
of_reserved_mem_device_release(dev);
}
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 413/675] media: nxp: imx8-isi: Add missing v4l2_subdev_cleanup() in crossbar and pipe
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
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2026-07-30 14:12 ` [PATCH 6.18 412/675] media: nuvoton: npcm-video: fix memory leaks in probe and remove Greg Kroah-Hartman
@ 2026-07-30 14:12 ` Greg Kroah-Hartman
2026-07-30 14:12 ` [PATCH 6.18 414/675] media: nxp: imx8-isi: Clean up already-initialized pipes on probe failure Greg Kroah-Hartman
` (266 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:12 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Xiaolei Wang, Frank Li,
Laurent Pinchart, Hans Verkuil
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Xiaolei Wang <xiaolei.wang@windriver.com>
commit 567418eedd25b3d86d489807682030b4b98b73d9 upstream.
Both mxc_isi_crossbar_init() and mxc_isi_pipe_init() call
v4l2_subdev_init_finalize() which allocates the subdev active state,
but neither mxc_isi_crossbar_cleanup() nor mxc_isi_pipe_cleanup()
calls v4l2_subdev_cleanup() to free it.
This causes a memory leak on every rmmod, reported by kmemleak:
unreferenced object 0xffff0000d06fc800 (size 192):
comm "(udev-worker)", pid 254, jiffies 4294913455
backtrace (crc 36eeae58):
kmemleak_alloc+0x34/0x40
__kvmalloc_node_noprof+0x5f8/0x7d8
__v4l2_subdev_state_alloc+0x1fc/0x30c
__v4l2_subdev_init_finalize+0x178/0x368
Add the missing v4l2_subdev_cleanup() calls before media_entity_cleanup()
in both crossbar and pipe cleanup paths.
Fixes: cf21f328fcaf ("media: nxp: Add i.MX8 ISI driver")
Cc: stable@vger.kernel.org
Signed-off-by: Xiaolei Wang <xiaolei.wang@windriver.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patch.msgid.link/20260507041318.491594-3-xiaolei.wang@windriver.com
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/media/platform/nxp/imx8-isi/imx8-isi-crossbar.c | 1 +
drivers/media/platform/nxp/imx8-isi/imx8-isi-pipe.c | 1 +
2 files changed, 2 insertions(+)
--- a/drivers/media/platform/nxp/imx8-isi/imx8-isi-crossbar.c
+++ b/drivers/media/platform/nxp/imx8-isi/imx8-isi-crossbar.c
@@ -492,6 +492,7 @@ err_free:
void mxc_isi_crossbar_cleanup(struct mxc_isi_crossbar *xbar)
{
+ v4l2_subdev_cleanup(&xbar->sd);
media_entity_cleanup(&xbar->sd.entity);
kfree(xbar->pads);
kfree(xbar->inputs);
--- a/drivers/media/platform/nxp/imx8-isi/imx8-isi-pipe.c
+++ b/drivers/media/platform/nxp/imx8-isi/imx8-isi-pipe.c
@@ -819,6 +819,7 @@ void mxc_isi_pipe_cleanup(struct mxc_isi
{
struct v4l2_subdev *sd = &pipe->sd;
+ v4l2_subdev_cleanup(sd);
media_entity_cleanup(&sd->entity);
mutex_destroy(&pipe->lock);
}
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 414/675] media: nxp: imx8-isi: Clean up already-initialized pipes on probe failure
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (412 preceding siblings ...)
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@ 2026-07-30 14:12 ` Greg Kroah-Hartman
2026-07-30 14:12 ` [PATCH 6.18 415/675] media: nxp: imx8-isi: Fix missing v4l2_subdev_cleanup() in pipe init error path Greg Kroah-Hartman
` (265 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:12 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Xiaolei Wang, Laurent Pinchart,
Frank Li, Hans Verkuil
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Xiaolei Wang <xiaolei.wang@windriver.com>
commit d970b27cc48ec42f8a72bc3a4a4ad2e5c7a36395 upstream.
When mxc_isi_pipe_init() fails partway through the channel loop or
when mxc_isi_v4l2_init() fails, the already initialized pipes are
not cleaned up.
Fix this by calling mxc_isi_pipe_cleanup() for each already-initialized
pipe in the err_xbar error path.
Fixes: cf21f328fcaf ("media: nxp: Add i.MX8 ISI driver")
Cc: stable@vger.kernel.org
Signed-off-by: Xiaolei Wang <xiaolei.wang@windriver.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Link: https://patch.msgid.link/20260507041318.491594-5-xiaolei.wang@windriver.com
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/media/platform/nxp/imx8-isi/imx8-isi-core.c | 2 ++
1 file changed, 2 insertions(+)
--- a/drivers/media/platform/nxp/imx8-isi/imx8-isi-core.c
+++ b/drivers/media/platform/nxp/imx8-isi/imx8-isi-core.c
@@ -517,6 +517,8 @@ static int mxc_isi_probe(struct platform
return 0;
err_xbar:
+ while (i--)
+ mxc_isi_pipe_cleanup(&isi->pipes[i]);
mxc_isi_crossbar_cleanup(&isi->crossbar);
return ret;
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 415/675] media: nxp: imx8-isi: Fix missing v4l2_subdev_cleanup() in pipe init error path
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (413 preceding siblings ...)
2026-07-30 14:12 ` [PATCH 6.18 414/675] media: nxp: imx8-isi: Clean up already-initialized pipes on probe failure Greg Kroah-Hartman
@ 2026-07-30 14:12 ` Greg Kroah-Hartman
2026-07-30 14:12 ` [PATCH 6.18 416/675] media: nxp: imx8-isi: Fix potential out-of-bounds issues Greg Kroah-Hartman
` (264 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:12 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Xiaolei Wang, Laurent Pinchart,
Hans Verkuil
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Xiaolei Wang <xiaolei.wang@windriver.com>
commit 8262de0663318124824aaafd97ddb5d7bb53bd77 upstream.
After v4l2_subdev_init_finalize() succeeds in mxc_isi_pipe_init(), if
platform_get_irq() or devm_request_irq() fails, the error path jumps to
a label that only calls media_entity_cleanup() and mutex_destroy(),
missing the v4l2_subdev_cleanup() call needed to free the subdev active
state allocated by v4l2_subdev_init_finalize().
Add an error_subdev label that calls v4l2_subdev_cleanup() before
falling through to the existing error cleanup.
Fixes: cf21f328fcaf ("media: nxp: Add i.MX8 ISI driver")
Cc: stable@vger.kernel.org
Signed-off-by: Xiaolei Wang <xiaolei.wang@windriver.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patch.msgid.link/20260507041318.491594-4-xiaolei.wang@windriver.com
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/media/platform/nxp/imx8-isi/imx8-isi-pipe.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
--- a/drivers/media/platform/nxp/imx8-isi/imx8-isi-pipe.c
+++ b/drivers/media/platform/nxp/imx8-isi/imx8-isi-pipe.c
@@ -796,18 +796,20 @@ int mxc_isi_pipe_init(struct mxc_isi_dev
irq = platform_get_irq(to_platform_device(isi->dev), id);
if (irq < 0) {
ret = irq;
- goto error;
+ goto error_subdev;
}
ret = devm_request_irq(isi->dev, irq, mxc_isi_pipe_irq_handler,
0, dev_name(isi->dev), pipe);
if (ret < 0) {
dev_err(isi->dev, "failed to request IRQ (%d)\n", ret);
- goto error;
+ goto error_subdev;
}
return 0;
+error_subdev:
+ v4l2_subdev_cleanup(sd);
error:
media_entity_cleanup(&sd->entity);
mutex_destroy(&pipe->lock);
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 416/675] media: nxp: imx8-isi: Fix potential out-of-bounds issues
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (414 preceding siblings ...)
2026-07-30 14:12 ` [PATCH 6.18 415/675] media: nxp: imx8-isi: Fix missing v4l2_subdev_cleanup() in pipe init error path Greg Kroah-Hartman
@ 2026-07-30 14:12 ` Greg Kroah-Hartman
2026-07-30 14:12 ` [PATCH 6.18 417/675] media: nxp: imx8-isi: Fix scale factor calculation for hardware rounding Greg Kroah-Hartman
` (263 subsequent siblings)
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From: Greg Kroah-Hartman @ 2026-07-30 14:12 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Frank Li, Guoniu Zhou,
Laurent Pinchart, Hans Verkuil
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Guoniu Zhou <guoniu.zhou@nxp.com>
commit 57a7ec5c9f38ce6c4d6209c4b75c8e57e1fea6cf upstream.
The maximum downscaling factor supported by ISI can be up to 16. Add
minimum value constraint before applying the setting to hardware.
Otherwise, the process will not respond even when Ctrl+C is executed.
Fixes: cf21f328fcaf ("media: nxp: Add i.MX8 ISI driver")
Cc: stable@vger.kernel.org
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Guoniu Zhou <guoniu.zhou@nxp.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patch.msgid.link/20260323-isi-v3-1-8df53b24e622@oss.nxp.com
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/media/platform/nxp/imx8-isi/imx8-isi-core.h | 16 ++++++++++++++++
drivers/media/platform/nxp/imx8-isi/imx8-isi-m2m.c | 11 ++++++++---
drivers/media/platform/nxp/imx8-isi/imx8-isi-pipe.c | 13 ++++++++-----
3 files changed, 32 insertions(+), 8 deletions(-)
--- a/drivers/media/platform/nxp/imx8-isi/imx8-isi-core.h
+++ b/drivers/media/platform/nxp/imx8-isi/imx8-isi-core.h
@@ -11,6 +11,7 @@
#define __MXC_ISI_CORE_H__
#include <linux/list.h>
+#include <linux/math.h>
#include <linux/mutex.h>
#include <linux/spinlock.h>
#include <linux/types.h>
@@ -412,4 +413,19 @@ static inline void mxc_isi_debug_cleanup
}
#endif
+/*
+ * ISI scaling engine works in two parts: it performs pre-decimation of
+ * the image followed by bilinear filtering to achieve the desired
+ * downscaling factor.
+ *
+ * The decimation filter provides a maximum downscaling factor of 8, and
+ * the subsequent bilinear filter provides a maximum downscaling factor
+ * of 2. Combined, the maximum scaling factor can be up to 16.
+ */
+static inline unsigned int
+mxc_isi_clamp_downscale_16(unsigned int val, unsigned int max_val)
+{
+ return clamp(val, max(1U, DIV_ROUND_UP(max_val, 16)), max_val);
+}
+
#endif /* __MXC_ISI_CORE_H__ */
--- a/drivers/media/platform/nxp/imx8-isi/imx8-isi-m2m.c
+++ b/drivers/media/platform/nxp/imx8-isi/imx8-isi-m2m.c
@@ -509,9 +509,14 @@ __mxc_isi_m2m_try_fmt_vid(struct mxc_isi
const enum mxc_isi_video_type type)
{
if (type == MXC_ISI_VIDEO_M2M_CAP) {
- /* Downscaling only */
- pix->width = min(pix->width, ctx->queues.out.format.width);
- pix->height = min(pix->height, ctx->queues.out.format.height);
+ const struct v4l2_pix_format_mplane *format =
+ &ctx->queues.out.format;
+
+ /* Downscaling only, by up to 16. */
+ pix->width = mxc_isi_clamp_downscale_16(pix->width,
+ format->width);
+ pix->height = mxc_isi_clamp_downscale_16(pix->height,
+ format->height);
}
return mxc_isi_format_try(ctx->m2m->pipe, pix, type);
--- a/drivers/media/platform/nxp/imx8-isi/imx8-isi-pipe.c
+++ b/drivers/media/platform/nxp/imx8-isi/imx8-isi-pipe.c
@@ -641,16 +641,19 @@ static int mxc_isi_pipe_set_selection(st
/* Composing is supported on the sink only. */
return -EINVAL;
- /* The sink crop is bound by the sink format downscaling only). */
+ /*
+ * The ISI supports downscaling only, with a factor up to 16.
+ * Clamp the compose rectangle size accordingly.
+ */
format = mxc_isi_pipe_get_pad_format(pipe, state,
MXC_ISI_PIPE_PAD_SINK);
sel->r.left = 0;
sel->r.top = 0;
- sel->r.width = clamp(sel->r.width, MXC_ISI_MIN_WIDTH,
- format->width);
- sel->r.height = clamp(sel->r.height, MXC_ISI_MIN_HEIGHT,
- format->height);
+ sel->r.width = mxc_isi_clamp_downscale_16(sel->r.width,
+ format->width);
+ sel->r.height = mxc_isi_clamp_downscale_16(sel->r.height,
+ format->height);
rect = mxc_isi_pipe_get_pad_compose(pipe, state,
MXC_ISI_PIPE_PAD_SINK);
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 417/675] media: nxp: imx8-isi: Fix scale factor calculation for hardware rounding
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (415 preceding siblings ...)
2026-07-30 14:12 ` [PATCH 6.18 416/675] media: nxp: imx8-isi: Fix potential out-of-bounds issues Greg Kroah-Hartman
@ 2026-07-30 14:12 ` Greg Kroah-Hartman
2026-07-30 14:12 ` [PATCH 6.18 418/675] media: pci: dm1105: Free allocated workqueue Greg Kroah-Hartman
` (262 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:12 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Guoniu Zhou, Laurent Pinchart,
Hans Verkuil
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Guoniu Zhou <guoniu.zhou@nxp.com>
commit 5eb54da3f874b44149556542d949909898865e29 upstream.
The ISI hardware rounds the actual output size up to an integer, as
described in i.MX93 Reference Manual section 57.7.8 (Channel 0 Scale
Factor). The scale factor must be calculated to ensure the theoretical
output value rounds up to exactly the desired size.
Fixes: cf21f328fcaf ("media: nxp: Add i.MX8 ISI driver")
Cc: stable@vger.kernel.org
Signed-off-by: Guoniu Zhou <guoniu.zhou@nxp.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patch.msgid.link/20260323-isi-v3-2-8df53b24e622@oss.nxp.com
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/media/platform/nxp/imx8-isi/imx8-isi-hw.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
--- a/drivers/media/platform/nxp/imx8-isi/imx8-isi-hw.c
+++ b/drivers/media/platform/nxp/imx8-isi/imx8-isi-hw.c
@@ -112,7 +112,14 @@ static u32 mxc_isi_channel_scaling_ratio
else
*dec = 8;
- return min_t(u32, from * 0x1000 / (to * *dec), ISI_DOWNSCALE_THRESHOLD);
+ /*
+ * The ISI rounds output dimensions up to the next integer (i.MX93 RM
+ * section 57.7.8). Calculate the scale factor such that the theoretical
+ * output (input / scale_factor) rounds up to exactly the desired
+ * output.
+ */
+ return min_t(u32, DIV_ROUND_UP(from * 0x1000, to * *dec),
+ ISI_DOWNSCALE_THRESHOLD);
}
static void mxc_isi_channel_set_scaling(struct mxc_isi_pipe *pipe,
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 418/675] media: pci: dm1105: Free allocated workqueue
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` (416 preceding siblings ...)
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@ 2026-07-30 14:12 ` Greg Kroah-Hartman
2026-07-30 14:12 ` [PATCH 6.18 419/675] media: pwc: Drain fill_buf on start_streaming() failure Greg Kroah-Hartman
` (261 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:12 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Krzysztof Kozlowski, Hans Verkuil
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
commit 1a65db225b25bb8c8febf16974c060e0cc242eb9 upstream.
Destroy allocated workqueue in remove() callback to free its resources,
thus fixing memory leak.
Fixes: 519a4bdcf822 ("V4L/DVB (11984): Add support for yet another SDMC DM1105 based DVB-S card.")
Cc: <stable@vger.kernel.org>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/media/pci/dm1105/dm1105.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/media/pci/dm1105/dm1105.c
+++ b/drivers/media/pci/dm1105/dm1105.c
@@ -1194,6 +1194,7 @@ static void dm1105_remove(struct pci_dev
dm1105_hw_exit(dev);
free_irq(pdev->irq, dev);
+ destroy_workqueue(dev->wq);
pci_iounmap(pdev, dev->io_mem);
pci_release_regions(pdev);
pci_disable_device(pdev);
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 419/675] media: pwc: Drain fill_buf on start_streaming() failure
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (417 preceding siblings ...)
2026-07-30 14:12 ` [PATCH 6.18 418/675] media: pci: dm1105: Free allocated workqueue Greg Kroah-Hartman
@ 2026-07-30 14:12 ` Greg Kroah-Hartman
2026-07-30 14:12 ` [PATCH 6.18 420/675] media: pwc: Return queued buffers " Greg Kroah-Hartman
` (260 subsequent siblings)
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From: Greg Kroah-Hartman @ 2026-07-30 14:12 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Valery Borovsky, Hans Verkuil
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Valery Borovsky <vebohr@gmail.com>
commit 906e410dcffbbd99fb4081abab817a830033aa28 upstream.
pwc_isoc_init() submits its isochronous URBs with
usb_submit_urb(.., GFP_KERNEL) in a loop. After the first URB is
submitted, its completion handler pwc_isoc_handler() can run on another
CPU before the loop finishes:
start_streaming()
pwc_isoc_init()
usb_submit_urb(urbs[0], GFP_KERNEL)
pwc_isoc_handler(urbs[0])
pdev->fill_buf =
pwc_get_next_fill_buf(pdev)
usb_submit_urb(urbs[i>0], ..) -> fails
pwc_isoc_cleanup(pdev) /* kills URBs */
return ret;
pwc_cleanup_queued_bufs(pdev, VB2_BUF_STATE_QUEUED)
pwc_get_next_fill_buf() detaches a buffer from pdev->queued_bufs and
stores it in pdev->fill_buf. The error path in start_streaming() only
drains pdev->queued_bufs, so the buffer parked in pdev->fill_buf is
leaked. vb2_start_streaming() then triggers
WARN_ON(owned_by_drv_count).
stop_streaming() already handles this since commit 80b0963e1698
("[media] pwc: fix WARN_ON"), which added the fill_buf drain in the
teardown path but not in the start_streaming() error path. Mirror that
handling on failure so start_streaming() returns with no buffer owned
by the driver.
Issue identified by automated review of the INV-003 series at
https://sashiko.dev/
Fixes: 885fe18f5542 ("[media] pwc: Replace private buffer management code with videobuf2")
Cc: stable@vger.kernel.org
Signed-off-by: Valery Borovsky <vebohr@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/media/usb/pwc/pwc-if.c | 5 +++++
1 file changed, 5 insertions(+)
--- a/drivers/media/usb/pwc/pwc-if.c
+++ b/drivers/media/usb/pwc/pwc-if.c
@@ -726,6 +726,11 @@ static int start_streaming(struct vb2_qu
pwc_camera_power(pdev, 0);
/* And cleanup any queued bufs!! */
pwc_cleanup_queued_bufs(pdev, VB2_BUF_STATE_QUEUED);
+ if (pdev->fill_buf) {
+ vb2_buffer_done(&pdev->fill_buf->vb.vb2_buf,
+ VB2_BUF_STATE_QUEUED);
+ pdev->fill_buf = NULL;
+ }
}
mutex_unlock(&pdev->v4l2_lock);
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 420/675] media: pwc: Return queued buffers on start_streaming() failure
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (418 preceding siblings ...)
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@ 2026-07-30 14:12 ` Greg Kroah-Hartman
2026-07-30 14:12 ` [PATCH 6.18 421/675] media: qcom: camss: Fix RDI streaming for CSID 680 Greg Kroah-Hartman
` (259 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:12 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Valery Borovsky, Hans Verkuil
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Valery Borovsky <vebohr@gmail.com>
commit 975b2ee20e569d47821e4f6c9761b4664d48a6a4 upstream.
The vb2 framework hands buffers to the driver via buf_queue() before
calling start_streaming(). If start_streaming() returns an error
without first returning those buffers via vb2_buffer_done(),
vb2_start_streaming() fires WARN_ON(owned_by_drv_count) and the queued
buffers leak.
pwc's start_streaming() had two early returns that hit this trap:
-ENODEV when the USB device was already disconnected, and -ERESTARTSYS
when mutex_lock_interruptible() was interrupted by a signal. Call the
existing pwc_cleanup_queued_bufs() helper with VB2_BUF_STATE_QUEUED
before returning (matching the state already used by the
pwc_isoc_init() error path in the same function).
This mirrors the uvcvideo fix in commit 4cf3b6fd54eb ("media: uvcvideo:
Return queued buffers on start_streaming() failure").
Fixes: ceede9fa8939 ("[media] pwc: Fix locking")
Cc: stable@vger.kernel.org
Signed-off-by: Valery Borovsky <vebohr@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/media/usb/pwc/pwc-if.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
--- a/drivers/media/usb/pwc/pwc-if.c
+++ b/drivers/media/usb/pwc/pwc-if.c
@@ -710,11 +710,15 @@ static int start_streaming(struct vb2_qu
struct pwc_device *pdev = vb2_get_drv_priv(vq);
int r;
- if (!pdev->udev)
+ if (!pdev->udev) {
+ pwc_cleanup_queued_bufs(pdev, VB2_BUF_STATE_QUEUED);
return -ENODEV;
+ }
- if (mutex_lock_interruptible(&pdev->v4l2_lock))
+ if (mutex_lock_interruptible(&pdev->v4l2_lock)) {
+ pwc_cleanup_queued_bufs(pdev, VB2_BUF_STATE_QUEUED);
return -ERESTARTSYS;
+ }
/* Turn on camera and set LEDS on */
pwc_camera_power(pdev, 1);
pwc_set_leds(pdev, leds[0], leds[1]);
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 421/675] media: qcom: camss: Fix RDI streaming for CSID 680
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (419 preceding siblings ...)
2026-07-30 14:12 ` [PATCH 6.18 420/675] media: pwc: Return queued buffers " Greg Kroah-Hartman
@ 2026-07-30 14:12 ` Greg Kroah-Hartman
2026-07-30 14:12 ` [PATCH 6.18 422/675] media: qcom: camss: Fix RDI streaming for CSID GEN2 Greg Kroah-Hartman
` (258 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:12 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Bryan ODonoghue, Vladimir Zapolskiy,
Loic Poulain, Bryan ODonoghue
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
commit 93ea81d16570442dbca04d2e2563ae8c3e65fa1b upstream.
Fix streaming to RDI1 and RDI2. csid->phy.en_vc contains a bitmask of
enabled CSID ports not virtual channels.
We cycle through the number of available CSID ports and test this value
against the vc_en bitmask.
We then use the passed value both as an index to the port configuration
macros and as a virtual channel index.
This is a very broken pattern. Reviewing the initial introduction of VC
support it states that you can only map one CSID to one VFE. This is true
however each CSID has multiple sources which can sink inside of the VFE -
for example there is a "pixel" path for bayer stats which sources @
CSID(x):3 and sinks on VFE(x):pix.
That is CSID port # 3 should drive VFE port #3. With our current setup only
a sensor which drives virtual channel number #3 could possibly enable that
setup.
This is deeply wrong the virtual channel has no relevance to hooking CSID
to VFE, a fact that is proven after this patch is applied allowing
RDI0,RDI1 and RDI2 to function with VC0 whereas before only RDI1 worked.
Another way the current model breaks is the DT field. A sensor driving
different data-types on the same VC would not be able to separate the VC:DT
pair to separate RDI outputs, thus breaking another feature of VCs in the
MIPI data-stream.
Default the VC back to zero. A follow on series will implement subdev
streams to actually enable VCs without breaking CSID source to VFE sink.
Fixes: 253314b20408 ("media: qcom: camss: Add CSID 680 support")
Cc: stable@vger.kernel.org
Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Reviewed-by: Vladimir Zapolskiy <vladimir.zapolskiy@linaro.org>
Reviewed-by: Loic Poulain <loic.poulain@oss.qualcomm.com>
Signed-off-by: Bryan O'Donoghue <bod@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/media/platform/qcom/camss/camss-csid-680.c | 30 ++++++++++-----------
1 file changed, 15 insertions(+), 15 deletions(-)
--- a/drivers/media/platform/qcom/camss/camss-csid-680.c
+++ b/drivers/media/platform/qcom/camss/camss-csid-680.c
@@ -219,9 +219,9 @@ static void __csid_configure_top(struct
CSID_TOP_IO_PATH_CFG0(csid->id));
}
-static void __csid_configure_rdi_stream(struct csid_device *csid, u8 enable, u8 vc)
+static void __csid_configure_rdi_stream(struct csid_device *csid, u8 enable, u8 port, u8 vc)
{
- struct v4l2_mbus_framefmt *input_format = &csid->fmt[MSM_CSID_PAD_FIRST_SRC + vc];
+ struct v4l2_mbus_framefmt *input_format = &csid->fmt[MSM_CSID_PAD_FIRST_SRC + port];
const struct csid_format_info *format = csid_get_fmt_entry(csid->res->formats->formats,
csid->res->formats->nformats,
input_format->code);
@@ -233,28 +233,28 @@ static void __csid_configure_rdi_stream(
lane_cnt = 4;
val = 0;
- writel(val, csid->base + CSID_RDI_FRM_DROP_PERIOD(vc));
+ writel(val, csid->base + CSID_RDI_FRM_DROP_PERIOD(port));
/*
* DT_ID is a two bit bitfield that is concatenated with
* the four least significant bits of the five bit VC
* bitfield to generate an internal CID value.
*
- * CSID_RDI_CFG0(vc)
+ * CSID_RDI_CFG0(port)
* DT_ID : 28:27
* VC : 26:22
* DT : 21:16
*
* CID : VC 3:0 << 2 | DT_ID 1:0
*/
- dt_id = vc & 0x03;
+ dt_id = port & 0x03;
/* note: for non-RDI path, this should be format->decode_format */
val |= DECODE_FORMAT_PAYLOAD_ONLY << RDI_CFG0_DECODE_FORMAT;
val |= format->data_type << RDI_CFG0_DATA_TYPE;
val |= vc << RDI_CFG0_VIRTUAL_CHANNEL;
val |= dt_id << RDI_CFG0_DT_ID;
- writel(val, csid->base + CSID_RDI_CFG0(vc));
+ writel(val, csid->base + CSID_RDI_CFG0(port));
val = RDI_CFG1_TIMESTAMP_STB_FRAME;
val |= RDI_CFG1_BYTE_CNTR_EN;
@@ -265,23 +265,23 @@ static void __csid_configure_rdi_stream(
val |= RDI_CFG1_CROP_V_EN;
val |= RDI_CFG1_PACKING_MIPI;
- writel(val, csid->base + CSID_RDI_CFG1(vc));
+ writel(val, csid->base + CSID_RDI_CFG1(port));
val = 0;
- writel(val, csid->base + CSID_RDI_IRQ_SUBSAMPLE_PERIOD(vc));
+ writel(val, csid->base + CSID_RDI_IRQ_SUBSAMPLE_PERIOD(port));
val = 1;
- writel(val, csid->base + CSID_RDI_IRQ_SUBSAMPLE_PATTERN(vc));
+ writel(val, csid->base + CSID_RDI_IRQ_SUBSAMPLE_PATTERN(port));
val = 0;
- writel(val, csid->base + CSID_RDI_CTRL(vc));
+ writel(val, csid->base + CSID_RDI_CTRL(port));
- val = readl(csid->base + CSID_RDI_CFG0(vc));
+ val = readl(csid->base + CSID_RDI_CFG0(port));
if (enable)
val |= RDI_CFG0_ENABLE;
else
val &= ~RDI_CFG0_ENABLE;
- writel(val, csid->base + CSID_RDI_CFG0(vc));
+ writel(val, csid->base + CSID_RDI_CFG0(port));
}
static void csid_configure_stream(struct csid_device *csid, u8 enable)
@@ -290,11 +290,11 @@ static void csid_configure_stream(struct
__csid_configure_top(csid);
- /* Loop through all enabled VCs and configure stream for each */
+ /* Loop through all enabled ports and configure a stream for each */
for (i = 0; i < MSM_CSID_MAX_SRC_STREAMS; i++) {
if (csid->phy.en_vc & BIT(i)) {
- __csid_configure_rdi_stream(csid, enable, i);
- __csid_configure_rx(csid, &csid->phy, i);
+ __csid_configure_rdi_stream(csid, enable, i, 0);
+ __csid_configure_rx(csid, &csid->phy, 0);
__csid_ctrl_rdi(csid, enable, i);
}
}
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 422/675] media: qcom: camss: Fix RDI streaming for CSID GEN2
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (420 preceding siblings ...)
2026-07-30 14:12 ` [PATCH 6.18 421/675] media: qcom: camss: Fix RDI streaming for CSID 680 Greg Kroah-Hartman
@ 2026-07-30 14:12 ` Greg Kroah-Hartman
2026-07-30 14:12 ` [PATCH 6.18 423/675] media: qcom: camss: Fix RDI streaming for CSID GEN3 Greg Kroah-Hartman
` (257 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:12 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Bryan ODonoghue, Vladimir Zapolskiy,
Loic Poulain, Bryan ODonoghue
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
commit 618765634cefbdddafa84f07f82e9dd05b86cb9c upstream.
Fix streaming from CSIDn RDI1 and RDI2 to VFEn RDI1 and RDI2. A pattern we
have replicated throughout CAMSS where we use the VC number to populate
both the VC fields and port fields of the CSID means that in practice only
VC = 0 on CSIDn:RDI0 to VFEn:RDI0 works.
Fix that for CSID gen2 by separating VC and port. Fix to VC zero as a
bugfix we will look to properly populate the VC field with follow on
patches later.
Fixes: 729fc005c8e2 ("media: qcom: camss: Split testgen, RDI and RX for CSID 170")
Cc: stable@vger.kernel.org
Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Reviewed-by: Vladimir Zapolskiy <vladimir.zapolskiy@linaro.org>
Reviewed-by: Loic Poulain <loic.poulain@oss.qualcomm.com>
Signed-off-by: Bryan O'Donoghue <bod@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/media/platform/qcom/camss/camss-csid-gen2.c | 47 ++++++++++----------
1 file changed, 24 insertions(+), 23 deletions(-)
--- a/drivers/media/platform/qcom/camss/camss-csid-gen2.c
+++ b/drivers/media/platform/qcom/camss/camss-csid-gen2.c
@@ -203,10 +203,10 @@ static void __csid_ctrl_rdi(struct csid_
writel_relaxed(val, csid->base + CSID_RDI_CTRL(rdi));
}
-static void __csid_configure_testgen(struct csid_device *csid, u8 enable, u8 vc)
+static void __csid_configure_testgen(struct csid_device *csid, u8 enable, u8 port, u8 vc)
{
struct csid_testgen_config *tg = &csid->testgen;
- struct v4l2_mbus_framefmt *input_format = &csid->fmt[MSM_CSID_PAD_FIRST_SRC + vc];
+ struct v4l2_mbus_framefmt *input_format = &csid->fmt[MSM_CSID_PAD_FIRST_SRC + port];
const struct csid_format_info *format = csid_get_fmt_entry(csid->res->formats->formats,
csid->res->formats->nformats,
input_format->code);
@@ -253,10 +253,10 @@ static void __csid_configure_testgen(str
writel_relaxed(val, csid->base + CSID_TPG_CTRL);
}
-static void __csid_configure_rdi_stream(struct csid_device *csid, u8 enable, u8 vc)
+static void __csid_configure_rdi_stream(struct csid_device *csid, u8 enable, u8 port, u8 vc)
{
/* Source pads matching RDI channels on hardware. Pad 1 -> RDI0, Pad 2 -> RDI1, etc. */
- struct v4l2_mbus_framefmt *input_format = &csid->fmt[MSM_CSID_PAD_FIRST_SRC + vc];
+ struct v4l2_mbus_framefmt *input_format = &csid->fmt[MSM_CSID_PAD_FIRST_SRC + port];
const struct csid_format_info *format = csid_get_fmt_entry(csid->res->formats->formats,
csid->res->formats->nformats,
input_format->code);
@@ -267,14 +267,14 @@ static void __csid_configure_rdi_stream(
* the four least significant bits of the five bit VC
* bitfield to generate an internal CID value.
*
- * CSID_RDI_CFG0(vc)
+ * CSID_RDI_CFG0(port)
* DT_ID : 28:27
* VC : 26:22
* DT : 21:16
*
* CID : VC 3:0 << 2 | DT_ID 1:0
*/
- u8 dt_id = vc & 0x03;
+ u8 dt_id = port & 0x03;
val = 1 << RDI_CFG0_BYTE_CNTR_EN;
val |= 1 << RDI_CFG0_FORMAT_MEASURE_EN;
@@ -284,56 +284,57 @@ static void __csid_configure_rdi_stream(
val |= format->data_type << RDI_CFG0_DATA_TYPE;
val |= vc << RDI_CFG0_VIRTUAL_CHANNEL;
val |= dt_id << RDI_CFG0_DT_ID;
- writel_relaxed(val, csid->base + CSID_RDI_CFG0(vc));
+ writel_relaxed(val, csid->base + CSID_RDI_CFG0(port));
/* CSID_TIMESTAMP_STB_POST_IRQ */
val = 2 << RDI_CFG1_TIMESTAMP_STB_SEL;
- writel_relaxed(val, csid->base + CSID_RDI_CFG1(vc));
+ writel_relaxed(val, csid->base + CSID_RDI_CFG1(port));
val = 1;
- writel_relaxed(val, csid->base + CSID_RDI_FRM_DROP_PERIOD(vc));
+ writel_relaxed(val, csid->base + CSID_RDI_FRM_DROP_PERIOD(port));
val = 0;
- writel_relaxed(val, csid->base + CSID_RDI_FRM_DROP_PATTERN(vc));
+ writel_relaxed(val, csid->base + CSID_RDI_FRM_DROP_PATTERN(port));
val = 1;
- writel_relaxed(val, csid->base + CSID_RDI_IRQ_SUBSAMPLE_PERIOD(vc));
+ writel_relaxed(val, csid->base + CSID_RDI_IRQ_SUBSAMPLE_PERIOD(port));
val = 0;
- writel_relaxed(val, csid->base + CSID_RDI_IRQ_SUBSAMPLE_PATTERN(vc));
+ writel_relaxed(val, csid->base + CSID_RDI_IRQ_SUBSAMPLE_PATTERN(port));
val = 1;
- writel_relaxed(val, csid->base + CSID_RDI_RPP_PIX_DROP_PERIOD(vc));
+ writel_relaxed(val, csid->base + CSID_RDI_RPP_PIX_DROP_PERIOD(port));
val = 0;
- writel_relaxed(val, csid->base + CSID_RDI_RPP_PIX_DROP_PATTERN(vc));
+ writel_relaxed(val, csid->base + CSID_RDI_RPP_PIX_DROP_PATTERN(port));
val = 1;
- writel_relaxed(val, csid->base + CSID_RDI_RPP_LINE_DROP_PERIOD(vc));
+ writel_relaxed(val, csid->base + CSID_RDI_RPP_LINE_DROP_PERIOD(port));
val = 0;
- writel_relaxed(val, csid->base + CSID_RDI_RPP_LINE_DROP_PATTERN(vc));
+ writel_relaxed(val, csid->base + CSID_RDI_RPP_LINE_DROP_PATTERN(port));
val = 0;
- writel_relaxed(val, csid->base + CSID_RDI_CTRL(vc));
+ writel_relaxed(val, csid->base + CSID_RDI_CTRL(port));
- val = readl_relaxed(csid->base + CSID_RDI_CFG0(vc));
+ val = readl_relaxed(csid->base + CSID_RDI_CFG0(port));
val |= enable << RDI_CFG0_ENABLE;
- writel_relaxed(val, csid->base + CSID_RDI_CFG0(vc));
+ writel_relaxed(val, csid->base + CSID_RDI_CFG0(port));
}
static void csid_configure_stream(struct csid_device *csid, u8 enable)
{
struct csid_testgen_config *tg = &csid->testgen;
u8 i;
- /* Loop through all enabled VCs and configure stream for each */
+
+ /* Loop through all enabled ports and configure a stream for each */
for (i = 0; i < MSM_CSID_MAX_SRC_STREAMS; i++)
if (csid->phy.en_vc & BIT(i)) {
if (tg->enabled)
- __csid_configure_testgen(csid, enable, i);
+ __csid_configure_testgen(csid, enable, i, 0);
- __csid_configure_rdi_stream(csid, enable, i);
- __csid_configure_rx(csid, &csid->phy, i);
+ __csid_configure_rdi_stream(csid, enable, i, 0);
+ __csid_configure_rx(csid, &csid->phy, 0);
__csid_ctrl_rdi(csid, enable, i);
}
}
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 423/675] media: qcom: camss: Fix RDI streaming for CSID GEN3
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (421 preceding siblings ...)
2026-07-30 14:12 ` [PATCH 6.18 422/675] media: qcom: camss: Fix RDI streaming for CSID GEN2 Greg Kroah-Hartman
@ 2026-07-30 14:12 ` Greg Kroah-Hartman
2026-07-30 14:12 ` [PATCH 6.18 424/675] media: radio-si476x: Unregister v4l2_device on probe failure Greg Kroah-Hartman
` (256 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:12 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Bryan ODonoghue, Vladimir Zapolskiy,
Loic Poulain, Bryan ODonoghue
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
commit ad136e52634d5a393a9dc93383f8ea1e898faf37 upstream.
Fix streaming from CSIDn RDI1 and RDI2 to VFEn RDI1 and RDI2. A pattern we
have replicated throughout CAMSS where we use the VC number to populate
both the VC fields and port fields of the CSID means that in practice only
VC = 0 on CSIDn:RDI0 to VFEn:RDI0 works.
Fix that for CSID gen3 by separating VC and port. Fix to VC zero as a
bugfix we will look to properly populate the VC field with follow on
patches later.
Fixes: d96fe1808dcc ("media: qcom: camss: Add CSID 780 support")
Cc: stable@vger.kernel.org
Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Reviewed-by: Vladimir Zapolskiy <vladimir.zapolskiy@linaro.org>
Reviewed-by: Loic Poulain <loic.poulain@oss.qualcomm.com>
Signed-off-by: Bryan O'Donoghue <bod@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/media/platform/qcom/camss/camss-csid-gen3.c | 28 ++++++++++----------
1 file changed, 14 insertions(+), 14 deletions(-)
--- a/drivers/media/platform/qcom/camss/camss-csid-gen3.c
+++ b/drivers/media/platform/qcom/camss/camss-csid-gen3.c
@@ -145,12 +145,12 @@ static void __csid_configure_wrapper(str
writel(val, csid->camss->csid_wrapper_base + CSID_IO_PATH_CFG0(csid->id));
}
-static void __csid_configure_rdi_stream(struct csid_device *csid, u8 enable, u8 vc)
+static void __csid_configure_rdi_stream(struct csid_device *csid, u8 enable, u8 port, u8 vc)
{
u32 val;
u8 lane_cnt = csid->phy.lane_cnt;
/* Source pads matching RDI channels on hardware. Pad 1 -> RDI0, Pad 2 -> RDI1, etc. */
- struct v4l2_mbus_framefmt *input_format = &csid->fmt[MSM_CSID_PAD_FIRST_SRC + vc];
+ struct v4l2_mbus_framefmt *input_format = &csid->fmt[MSM_CSID_PAD_FIRST_SRC + port];
const struct csid_format_info *format = csid_get_fmt_entry(csid->res->formats->formats,
csid->res->formats->nformats,
input_format->code);
@@ -163,14 +163,14 @@ static void __csid_configure_rdi_stream(
* the four least significant bits of the five bit VC
* bitfield to generate an internal CID value.
*
- * CSID_RDI_CFG0(vc)
+ * CSID_RDI_CFG0(port)
* DT_ID : 28:27
* VC : 26:22
* DT : 21:16
*
* CID : VC 3:0 << 2 | DT_ID 1:0
*/
- u8 dt_id = vc & 0x03;
+ u8 dt_id = port & 0x03;
val = RDI_CFG0_TIMESTAMP_EN;
val |= RDI_CFG0_TIMESTAMP_STB_SEL;
@@ -180,7 +180,7 @@ static void __csid_configure_rdi_stream(
val |= format->data_type << RDI_CFG0_DT;
val |= dt_id << RDI_CFG0_DT_ID;
- writel(val, csid->base + CSID_RDI_CFG0(vc));
+ writel(val, csid->base + CSID_RDI_CFG0(port));
val = RDI_CFG1_PACKING_FORMAT_MIPI;
val |= RDI_CFG1_PIX_STORE;
@@ -189,22 +189,22 @@ static void __csid_configure_rdi_stream(
val |= RDI_CFG1_CROP_H_EN;
val |= RDI_CFG1_CROP_V_EN;
- writel(val, csid->base + CSID_RDI_CFG1(vc));
+ writel(val, csid->base + CSID_RDI_CFG1(port));
val = 0;
- writel(val, csid->base + CSID_RDI_IRQ_SUBSAMPLE_PERIOD(vc));
+ writel(val, csid->base + CSID_RDI_IRQ_SUBSAMPLE_PERIOD(port));
val = 1;
- writel(val, csid->base + CSID_RDI_IRQ_SUBSAMPLE_PATTERN(vc));
+ writel(val, csid->base + CSID_RDI_IRQ_SUBSAMPLE_PATTERN(port));
val = 0;
- writel(val, csid->base + CSID_RDI_CTRL(vc));
+ writel(val, csid->base + CSID_RDI_CTRL(port));
- val = readl(csid->base + CSID_RDI_CFG0(vc));
+ val = readl(csid->base + CSID_RDI_CFG0(port));
if (enable)
val |= RDI_CFG0_EN;
- writel(val, csid->base + CSID_RDI_CFG0(vc));
+ writel(val, csid->base + CSID_RDI_CFG0(port));
}
static void csid_configure_stream(struct csid_device *csid, u8 enable)
@@ -213,11 +213,11 @@ static void csid_configure_stream(struct
__csid_configure_wrapper(csid);
- /* Loop through all enabled VCs and configure stream for each */
+ /* Loop through all enabled ports and configure a stream for each */
for (i = 0; i < MSM_CSID_MAX_SRC_STREAMS; i++)
if (csid->phy.en_vc & BIT(i)) {
- __csid_configure_rdi_stream(csid, enable, i);
- __csid_configure_rx(csid, &csid->phy, i);
+ __csid_configure_rdi_stream(csid, enable, i, 0);
+ __csid_configure_rx(csid, &csid->phy, 0);
__csid_ctrl_rdi(csid, enable, i);
}
}
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 424/675] media: radio-si476x: Unregister v4l2_device on probe failure
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (422 preceding siblings ...)
2026-07-30 14:12 ` [PATCH 6.18 423/675] media: qcom: camss: Fix RDI streaming for CSID GEN3 Greg Kroah-Hartman
@ 2026-07-30 14:12 ` Greg Kroah-Hartman
2026-07-30 14:12 ` [PATCH 6.18 425/675] media: rtl2832: fix use-after-free in rtl2832_remove() Greg Kroah-Hartman
` (255 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:12 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Ijae Kim, Myeonghun Pak,
Hans Verkuil
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Myeonghun Pak <mhun512@gmail.com>
commit 436a693af04ffb889aaf87cb69ec1f2b21d3569c upstream.
si476x_radio_probe() registers radio->v4l2dev before allocating the V4L2
controls and before registering the video device. If any of those later
steps fails, probe returns through the exit label after freeing only the
control handler.
A failed probe does not call si476x_radio_remove(), so the
v4l2_device_unregister() there is not reached. This leaves the parent
device reference taken by v4l2_device_register() behind on the error path.
Unregister the V4L2 device in the probe error path after freeing the
controls.
Fixes: b879a9c2a755 ("[media] v4l2: Add a V4L2 driver for SI476X MFD")
Cc: stable@vger.kernel.org
Co-developed-by: Ijae Kim <ae878000@gmail.com>
Signed-off-by: Ijae Kim <ae878000@gmail.com>
Signed-off-by: Myeonghun Pak <mhun512@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/media/radio/radio-si476x.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/media/radio/radio-si476x.c
+++ b/drivers/media/radio/radio-si476x.c
@@ -1493,6 +1493,7 @@ static int si476x_radio_probe(struct pla
return 0;
exit:
v4l2_ctrl_handler_free(radio->videodev.ctrl_handler);
+ v4l2_device_unregister(&radio->v4l2dev);
return rval;
}
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 425/675] media: rtl2832: fix use-after-free in rtl2832_remove()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (423 preceding siblings ...)
2026-07-30 14:12 ` [PATCH 6.18 424/675] media: radio-si476x: Unregister v4l2_device on probe failure Greg Kroah-Hartman
@ 2026-07-30 14:12 ` Greg Kroah-Hartman
2026-07-30 14:12 ` [PATCH 6.18 426/675] media: rtl2832_sdr: Return queued buffers on start_streaming() failure Greg Kroah-Hartman
` (254 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:12 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, syzbot+019ced393ab913002b75,
Deepanshu Kartikey, Hans Verkuil
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Deepanshu Kartikey <kartikey406@gmail.com>
commit 680daf40a82d483949f87f0d8f98639dc47e610c upstream.
cancel_delayed_work_sync() is called before i2c_mux_del_adapters()
in rtl2832_remove(). While the cancel waits for any running instance
of i2c_gate_work to finish, it does not prevent the timer from being
rescheduled by a concurrent thread.
During probe, the r820t_attach() call attempts I2C transfers through
the mux adapter. These transfers go through i2c_mux_master_xfer(),
which calls rtl2832_deselect() after the transfer completes,
rescheduling i2c_gate_work via schedule_delayed_work(). If this
transfer is still in flight when rtl2832_remove() runs,
rtl2832_deselect() can reschedule i2c_gate_work after it has been
cancelled, causing a use-after-free when kfree(dev) is called.
Fix this by calling i2c_mux_del_adapters() before
cancel_delayed_work_sync(). Once the mux adapter is unregistered, no
new I2C transfers can go through it, so rtl2832_deselect() can no
longer reschedule i2c_gate_work. The subsequent
cancel_delayed_work_sync() is then guaranteed to be final.
Fixes: cddcc40b1b15 ("[media] rtl2832: convert to use an explicit i2c mux core")
Cc: stable@vger.kernel.org
Reported-by: syzbot+019ced393ab913002b75@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=019ced393ab913002b75
Signed-off-by: Deepanshu Kartikey <kartikey406@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/media/dvb-frontends/rtl2832.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/media/dvb-frontends/rtl2832.c
+++ b/drivers/media/dvb-frontends/rtl2832.c
@@ -1115,10 +1115,10 @@ static void rtl2832_remove(struct i2c_cl
dev_dbg(&client->dev, "\n");
- cancel_delayed_work_sync(&dev->i2c_gate_work);
-
i2c_mux_del_adapters(dev->muxc);
+ cancel_delayed_work_sync(&dev->i2c_gate_work);
+
regmap_exit(dev->regmap);
kfree(dev);
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 426/675] media: rtl2832_sdr: Return queued buffers on start_streaming() failure
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (424 preceding siblings ...)
2026-07-30 14:12 ` [PATCH 6.18 425/675] media: rtl2832: fix use-after-free in rtl2832_remove() Greg Kroah-Hartman
@ 2026-07-30 14:12 ` Greg Kroah-Hartman
2026-07-30 14:12 ` [PATCH 6.18 427/675] media: rzg2l-cru: Skip ICnMC configuration when ICnSVC is used Greg Kroah-Hartman
` (253 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:12 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Valery Borovsky, Hans Verkuil
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Valery Borovsky <vebohr@gmail.com>
commit 33ca0aab6f4bd90921fc1395478f38f72c4d19af upstream.
The vb2 framework hands buffers to the driver via buf_queue() before
calling start_streaming(). If start_streaming() returns an error
without first returning those buffers via vb2_buffer_done(),
vb2_start_streaming() fires WARN_ON(owned_by_drv_count) and the queued
buffers leak.
rtl2832_sdr_start_streaming() had multiple error paths that hit this
trap: two direct early returns (-ENODEV, -ERESTARTSYS), plus six
`goto err` paths covering subdev s_power, tuner setup, ADC setup,
stream-buffer allocation, urb allocation, and urb submission failures.
None of them returned the queued buffers.
The original function had no distinct success exit and fell straight
through into the err label, which previously only did mutex_unlock and
"return ret". Adding queued-buffer cleanup at err must therefore be
paired with an explicit success return; otherwise every successful
start would also drain the buffer queue and kill streaming. Add that
success return, then add rtl2832_sdr_cleanup_queued_bufs() at the err
label and before each early return.
The cleanup helper takes a vb2_buffer_state argument so that the
start_streaming error paths can pass VB2_BUF_STATE_QUEUED (as
expected by userspace on start_streaming failure) while stop_streaming
keeps its existing VB2_BUF_STATE_ERROR semantics.
This mirrors the uvcvideo fix in commit 4cf3b6fd54eb ("media: uvcvideo:
Return queued buffers on start_streaming() failure").
The err label still does not roll back power_ctrl(), frontend_ctrl(),
the POWER_ON flag, or stream/URB allocations that may have happened
before the failing step. Those are pre-existing leaks of a different
class and are not addressed here.
Fixes: 771138920eaf ("[media] rtl2832_sdr: Realtek RTL2832 SDR driver module")
Cc: stable@vger.kernel.org
Signed-off-by: Valery Borovsky <vebohr@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/media/dvb-frontends/rtl2832_sdr.c | 19 ++++++++++++++-----
1 file changed, 14 insertions(+), 5 deletions(-)
--- a/drivers/media/dvb-frontends/rtl2832_sdr.c
+++ b/drivers/media/dvb-frontends/rtl2832_sdr.c
@@ -399,7 +399,8 @@ static int rtl2832_sdr_alloc_urbs(struct
}
/* Must be called with vb_queue_lock hold */
-static void rtl2832_sdr_cleanup_queued_bufs(struct rtl2832_sdr_dev *dev)
+static void rtl2832_sdr_cleanup_queued_bufs(struct rtl2832_sdr_dev *dev,
+ enum vb2_buffer_state state)
{
struct platform_device *pdev = dev->pdev;
unsigned long flags;
@@ -413,7 +414,7 @@ static void rtl2832_sdr_cleanup_queued_b
buf = list_entry(dev->queued_bufs.next,
struct rtl2832_sdr_frame_buf, list);
list_del(&buf->list);
- vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
+ vb2_buffer_done(&buf->vb.vb2_buf, state);
}
spin_unlock_irqrestore(&dev->queued_bufs_lock, flags);
}
@@ -855,11 +856,15 @@ static int rtl2832_sdr_start_streaming(s
dev_dbg(&pdev->dev, "\n");
- if (!dev->udev)
+ if (!dev->udev) {
+ rtl2832_sdr_cleanup_queued_bufs(dev, VB2_BUF_STATE_QUEUED);
return -ENODEV;
+ }
- if (mutex_lock_interruptible(&dev->v4l2_lock))
+ if (mutex_lock_interruptible(&dev->v4l2_lock)) {
+ rtl2832_sdr_cleanup_queued_bufs(dev, VB2_BUF_STATE_QUEUED);
return -ERESTARTSYS;
+ }
if (d->props->power_ctrl)
d->props->power_ctrl(d, 1);
@@ -900,7 +905,11 @@ static int rtl2832_sdr_start_streaming(s
if (ret)
goto err;
+ mutex_unlock(&dev->v4l2_lock);
+ return 0;
+
err:
+ rtl2832_sdr_cleanup_queued_bufs(dev, VB2_BUF_STATE_QUEUED);
mutex_unlock(&dev->v4l2_lock);
return ret;
@@ -920,7 +929,7 @@ static void rtl2832_sdr_stop_streaming(s
rtl2832_sdr_kill_urbs(dev);
rtl2832_sdr_free_urbs(dev);
rtl2832_sdr_free_stream_bufs(dev);
- rtl2832_sdr_cleanup_queued_bufs(dev);
+ rtl2832_sdr_cleanup_queued_bufs(dev, VB2_BUF_STATE_ERROR);
rtl2832_sdr_unset_adc(dev);
/* sleep tuner */
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 427/675] media: rzg2l-cru: Skip ICnMC configuration when ICnSVC is used
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (425 preceding siblings ...)
2026-07-30 14:12 ` [PATCH 6.18 426/675] media: rtl2832_sdr: Return queued buffers on start_streaming() failure Greg Kroah-Hartman
@ 2026-07-30 14:12 ` Greg Kroah-Hartman
2026-07-30 14:12 ` [PATCH 6.18 428/675] media: saa7134: Fix a possible memory leak in saa7134_video_init1 Greg Kroah-Hartman
` (252 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:12 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Tommaso Merciai, Jacopo Mondi,
Lad Prabhakar, Hans Verkuil
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Tommaso Merciai <tommaso.merciai.xr@bp.renesas.com>
commit cd4ce68875f406b0cf3f5a94c0fd22989689222f upstream.
When the CRU is configured to use ICnSVC for virtual channel mapping,
as on the RZ/{G3E, V2H/P} SoC, the ICnMC register must not be
programmed.
Return early after setting up ICnSVC to avoid overriding the ICnMC
register, which is not applicable in this mode.
This prevents unintended register programming when ICnSVC is enabled.
Cc: stable@vger.kernel.org
Fixes: 3c5ca0a48bb0 ("media: rzg2l-cru: Drop function pointer to configure CSI")
Signed-off-by: Tommaso Merciai <tommaso.merciai.xr@bp.renesas.com>
[Rework to not break image format programming]
Signed-off-by: Jacopo Mondi <jacopo.mondi+renesas@ideasonboard.com>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
.../platform/renesas/rzg2l-cru/rzg2l-cru-regs.h | 1 +
.../platform/renesas/rzg2l-cru/rzg2l-video.c | 17 +++++++++++------
2 files changed, 12 insertions(+), 6 deletions(-)
diff --git a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-cru-regs.h b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-cru-regs.h
index a5a57369ef0e..10e62f2646d0 100644
--- a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-cru-regs.h
+++ b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-cru-regs.h
@@ -60,6 +60,7 @@
#define ICnMC_CSCTHR BIT(5)
#define ICnMC_INF(x) ((x) << 16)
#define ICnMC_VCSEL(x) ((x) << 22)
+#define ICnMC_VCSEL_MASK GENMASK(23, 22)
#define ICnMC_INF_MASK GENMASK(21, 16)
#define ICnMS_IA BIT(2)
diff --git a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-video.c b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-video.c
index 162e2ace6931..6aea7c244df1 100644
--- a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-video.c
+++ b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-video.c
@@ -262,19 +262,24 @@ static void rzg2l_cru_csi2_setup(struct rzg2l_cru_dev *cru,
u8 csi_vc)
{
const struct rzg2l_cru_info *info = cru->info;
- u32 icnmc = ICnMC_INF(ip_fmt->datatype);
+ u32 icnmc = rzg2l_cru_read(cru, info->image_conv) & ~(ICnMC_INF_MASK |
+ ICnMC_VCSEL_MASK);
+ icnmc |= ICnMC_INF(ip_fmt->datatype);
+ /*
+ * VC filtering goes through SVC register on G3E/V2H.
+ *
+ * FIXME: virtual channel filtering is likely broken and only VC=0
+ * works.
+ */
if (cru->info->regs[ICnSVC]) {
rzg2l_cru_write(cru, ICnSVCNUM, csi_vc);
rzg2l_cru_write(cru, ICnSVC, ICnSVC_SVC0(0) | ICnSVC_SVC1(1) |
ICnSVC_SVC2(2) | ICnSVC_SVC3(3));
+ } else {
+ icnmc |= ICnMC_VCSEL(csi_vc);
}
- icnmc |= rzg2l_cru_read(cru, info->image_conv) & ~ICnMC_INF_MASK;
-
- /* Set virtual channel CSI2 */
- icnmc |= ICnMC_VCSEL(csi_vc);
-
rzg2l_cru_write(cru, info->image_conv, icnmc);
}
--
2.55.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 428/675] media: saa7134: Fix a possible memory leak in saa7134_video_init1
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (426 preceding siblings ...)
2026-07-30 14:12 ` [PATCH 6.18 427/675] media: rzg2l-cru: Skip ICnMC configuration when ICnSVC is used Greg Kroah-Hartman
@ 2026-07-30 14:12 ` Greg Kroah-Hartman
2026-07-30 14:12 ` [PATCH 6.18 429/675] media: stm32-dcmipp: Return queued buffers on start_streaming() failure Greg Kroah-Hartman
` (251 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:12 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Ma Ke, Hans Verkuil
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Ma Ke <make24@iscas.ac.cn>
commit f86ed548386e3050e5f8f25b450d09dc009d9a88 upstream.
In saa7134_video_init1(), the return value of the first
saa7134_pgtable_alloc() is not checked. If it fails, the function
continues as if successful, leaving the driver with an invalid page
table. Additionally, if vb2_queue_init() for the VBI queue fails after
the video queue page table has been allocated, the allocated memory is
not freed before returning. The second saa7134_pgtable_alloc() also
lacks a return value check. Errors occur during device probing before
the device is fully registered, the normal cleanup path in
saa7134_finidev() is not executed, leading to memory leaks and
potential use of uninitialized DMA resources.
Check the return value of both saa7134_pgtable_alloc() calls and
propagate errors. On failure of any later step, free allocated page
tables to avoid memory leaks. Ensure control handlers are also
released on error to prevent further resource leakage.
Found by code review.
Signed-off-by: Ma Ke <make24@iscas.ac.cn>
Cc: stable@vger.kernel.org
Fixes: a00e68888d5d ("[media] saa7134: move saa7134_pgtable to saa7134_dmaqueue")
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/media/pci/saa7134/saa7134-video.c | 25 ++++++++++++++++++++-----
1 file changed, 20 insertions(+), 5 deletions(-)
--- a/drivers/media/pci/saa7134/saa7134-video.c
+++ b/drivers/media/pci/saa7134/saa7134-video.c
@@ -1714,8 +1714,10 @@ int saa7134_video_init1(struct saa7134_d
q->dev = &dev->pci->dev;
ret = vb2_queue_init(q);
if (ret)
- return ret;
- saa7134_pgtable_alloc(dev->pci, &dev->video_q.pt);
+ goto err_free_ctrl;
+ ret = saa7134_pgtable_alloc(dev->pci, &dev->video_q.pt);
+ if (ret)
+ goto err_free_ctrl;
q = &dev->vbi_vbq;
q->type = V4L2_BUF_TYPE_VBI_CAPTURE;
@@ -1732,11 +1734,24 @@ int saa7134_video_init1(struct saa7134_d
q->lock = &dev->lock;
q->dev = &dev->pci->dev;
ret = vb2_queue_init(q);
- if (ret)
- return ret;
- saa7134_pgtable_alloc(dev->pci, &dev->vbi_q.pt);
+ if (ret) {
+ saa7134_pgtable_free(dev->pci, &dev->video_q.pt);
+ goto err_free_ctrl;
+ }
+
+ ret = saa7134_pgtable_alloc(dev->pci, &dev->vbi_q.pt);
+ if (ret) {
+ saa7134_pgtable_free(dev->pci, &dev->video_q.pt);
+ goto err_free_ctrl;
+ }
return 0;
+
+err_free_ctrl:
+ v4l2_ctrl_handler_free(&dev->ctrl_handler);
+ if (card_has_radio(dev))
+ v4l2_ctrl_handler_free(&dev->radio_ctrl_handler);
+ return ret;
}
void saa7134_video_fini(struct saa7134_dev *dev)
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 429/675] media: stm32-dcmipp: Return queued buffers on start_streaming() failure
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (427 preceding siblings ...)
2026-07-30 14:12 ` [PATCH 6.18 428/675] media: saa7134: Fix a possible memory leak in saa7134_video_init1 Greg Kroah-Hartman
@ 2026-07-30 14:12 ` Greg Kroah-Hartman
2026-07-30 14:12 ` [PATCH 6.18 430/675] media: stm32: dcmi: unregister notifier on probe failure Greg Kroah-Hartman
` (250 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:12 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Valery Borovsky, Hans Verkuil
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Valery Borovsky <vebohr@gmail.com>
commit ffc8eec06378a340d708c889184ab3e14b57d540 upstream.
The vb2 framework hands buffers to the driver via buf_queue() before
calling start_streaming(). If start_streaming() returns an error
without first returning those buffers via vb2_buffer_done(),
vb2_start_streaming() fires WARN_ON(owned_by_drv_count) and the queued
buffers leak.
dcmipp_bytecap_start_streaming() returned -EINVAL when the source
subdevice could not be resolved from the media graph, before
pm_runtime_resume_and_get() and media_pipeline_start() had been called.
The remaining error paths already converge on the err_buffer_done
label, which calls dcmipp_bytecap_all_buffers_done(...,
VB2_BUF_STATE_QUEUED). Jump to that label directly: the intermediate
err_pm_put / err_media_pipeline_stop labels are skipped, which is
correct because nothing they would undo has happened yet.
This mirrors the uvcvideo fix in commit 4cf3b6fd54eb ("media: uvcvideo:
Return queued buffers on start_streaming() failure").
Fixes: 28e0f3772296 ("media: stm32-dcmipp: STM32 DCMIPP camera interface driver")
Cc: stable@vger.kernel.org
Signed-off-by: Valery Borovsky <vebohr@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/media/platform/st/stm32/stm32-dcmipp/dcmipp-bytecap.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
--- a/drivers/media/platform/st/stm32/stm32-dcmipp/dcmipp-bytecap.c
+++ b/drivers/media/platform/st/stm32/stm32-dcmipp/dcmipp-bytecap.c
@@ -398,8 +398,10 @@ static int dcmipp_bytecap_start_streamin
*/
if (!vcap->s_subdev) {
pad = media_pad_remote_pad_first(&vcap->vdev.entity.pads[0]);
- if (!pad || !is_media_entity_v4l2_subdev(pad->entity))
- return -EINVAL;
+ if (!pad || !is_media_entity_v4l2_subdev(pad->entity)) {
+ ret = -EINVAL;
+ goto err_buffer_done;
+ }
vcap->s_subdev = media_entity_to_v4l2_subdev(pad->entity);
vcap->s_subdev_pad_nb = pad->index;
}
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 430/675] media: stm32: dcmi: unregister notifier on probe failure
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (428 preceding siblings ...)
2026-07-30 14:12 ` [PATCH 6.18 429/675] media: stm32-dcmipp: Return queued buffers on start_streaming() failure Greg Kroah-Hartman
@ 2026-07-30 14:12 ` Greg Kroah-Hartman
2026-07-30 14:12 ` [PATCH 6.18 431/675] media: sun4i-csi: Return queued buffers on start_streaming() failure Greg Kroah-Hartman
` (249 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:12 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Myeonghun Pak, Hans Verkuil
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Myeonghun Pak <mhun512@gmail.com>
commit 084973ebd67b28f0945c5d45408f86c58b540110 upstream.
dcmi_graph_init() registers the async notifier before dcmi_probe() toggles
the reset line. If reset_control_assert() or reset_control_deassert()
fails afterwards, probe returns through err_cleanup and the driver core
will not call dcmi_remove().
Unregister the notifier before cleaning it up on that error path,
matching the successful remove path and the V4L2 async notifier lifetime
rules.
Signed-off-by: Myeonghun Pak <mhun512@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Fixes: d079f94c9046 ("media: platform: Switch to v4l2_async_notifier_add_subdev")
Cc: stable@vger.kernel.org
[hverkuil: added Fixes tag]
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/media/platform/st/stm32/stm32-dcmi.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/media/platform/st/stm32/stm32-dcmi.c
+++ b/drivers/media/platform/st/stm32/stm32-dcmi.c
@@ -2063,6 +2063,7 @@ static int dcmi_probe(struct platform_de
return 0;
err_cleanup:
+ v4l2_async_nf_unregister(&dcmi->notifier);
v4l2_async_nf_cleanup(&dcmi->notifier);
err_media_entity_cleanup:
media_entity_cleanup(&dcmi->vdev->entity);
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 431/675] media: sun4i-csi: Return queued buffers on start_streaming() failure
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
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2026-07-30 14:12 ` [PATCH 6.18 430/675] media: stm32: dcmi: unregister notifier on probe failure Greg Kroah-Hartman
@ 2026-07-30 14:12 ` Greg Kroah-Hartman
2026-07-30 14:12 ` [PATCH 6.18 432/675] media: synopsys: hdmirx: Fix HPD lane hold time Greg Kroah-Hartman
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679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:12 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Valery Borovsky, Hans Verkuil
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Valery Borovsky <vebohr@gmail.com>
commit bbba3e260a62810a717b4442a3bb96d0ec0f6309 upstream.
The vb2 framework hands buffers to the driver via buf_queue() before
calling start_streaming(). If start_streaming() returns an error
without first returning those buffers via vb2_buffer_done(),
vb2_start_streaming() fires WARN_ON(owned_by_drv_count) and the queued
buffers leak.
sun4i_csi_start_streaming() returned -EINVAL when no matching CSI
format could be found, before any setup (scratch buffer allocation,
pipeline start) had been performed. The remaining error paths already
converge on the err_clear_dma_queue label, which calls
return_all_buffers(..., VB2_BUF_STATE_QUEUED) under csi->qlock. Jump
to that label directly: the intermediate err_disable_device /
err_disable_pipeline / err_free_scratch_buffer labels are skipped,
which is correct because nothing they would undo has happened yet.
This mirrors the uvcvideo fix in commit 4cf3b6fd54eb ("media: uvcvideo:
Return queued buffers on start_streaming() failure").
Fixes: 577bbf23b758 ("media: sunxi: Add A10 CSI driver")
Cc: stable@vger.kernel.org
Signed-off-by: Valery Borovsky <vebohr@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/media/platform/sunxi/sun4i-csi/sun4i_dma.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
--- a/drivers/media/platform/sunxi/sun4i-csi/sun4i_dma.c
+++ b/drivers/media/platform/sunxi/sun4i-csi/sun4i_dma.c
@@ -234,8 +234,10 @@ static int sun4i_csi_start_streaming(str
int ret;
csi_fmt = sun4i_csi_find_format(&csi->fmt.pixelformat, NULL);
- if (!csi_fmt)
- return -EINVAL;
+ if (!csi_fmt) {
+ ret = -EINVAL;
+ goto err_clear_dma_queue;
+ }
dev_dbg(csi->dev, "Starting capture\n");
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 432/675] media: synopsys: hdmirx: Fix HPD lane hold time
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
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2026-07-30 14:12 ` [PATCH 6.18 431/675] media: sun4i-csi: Return queued buffers on start_streaming() failure Greg Kroah-Hartman
@ 2026-07-30 14:12 ` Greg Kroah-Hartman
2026-07-30 14:12 ` [PATCH 6.18 433/675] media: tegra-video: vi: fix invalid u32 return value in format lookup Greg Kroah-Hartman
` (247 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:12 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Ross Cawston, Dmitry Osipenko,
Hans Verkuil
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Dmitry Osipenko <dmitry.osipenko@collabora.com>
commit d1162a5adbb5e95953d460b5bde3a04cd4473fe9 upstream.
Increase time of holding HPD lane low by 50ms. This fixes EDID change not
detected by source/display side.
Fixes: 7b59b132ad43 ("media: platform: synopsys: Add support for HDMI input driver")
Cc: stable@vger.kernel.org
Reported-by: Ross Cawston <ross@r-sc.ca>
Closes: https://lore.kernel.org/linux-rockchip/20260209061654.54757-1-ross@r-sc.ca/
Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/media/platform/synopsys/hdmirx/snps_hdmirx.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/media/platform/synopsys/hdmirx/snps_hdmirx.c
+++ b/drivers/media/platform/synopsys/hdmirx/snps_hdmirx.c
@@ -504,9 +504,9 @@ static void hdmirx_hpd_ctrl(struct snps_
hdmirx_writel(hdmirx_dev, CORE_CONFIG,
hdmirx_dev->hpd_trigger_level_high ? en : !en);
- /* 100ms delay as per HDMI spec */
+ /* 100ms delay as per HDMI spec + extra 50ms to cover internal delay */
if (!en)
- msleep(100);
+ msleep(100 + 50);
}
static void hdmirx_write_edid_data(struct snps_hdmirx_dev *hdmirx_dev,
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 433/675] media: tegra-video: vi: fix invalid u32 return value in format lookup
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (431 preceding siblings ...)
2026-07-30 14:12 ` [PATCH 6.18 432/675] media: synopsys: hdmirx: Fix HPD lane hold time Greg Kroah-Hartman
@ 2026-07-30 14:12 ` Greg Kroah-Hartman
2026-07-30 14:12 ` [PATCH 6.18 434/675] media: ti: vpe: unwind v4l2 device registration on probe error Greg Kroah-Hartman
` (246 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:12 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Hans Verkuil, Luca Ceresoli,
Hungyu Lin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Hungyu Lin <dennylin0707@gmail.com>
commit d5b50055338e131a1a99f923ebb0361974a00f36 upstream.
tegra_get_format_fourcc_by_idx() returns a u32 but uses -EINVAL to
signal an out-of-bounds index. This results in a large unsigned
value being returned, which may be interpreted as a valid fourcc.
Returning 0 is not a valid fourcc either. This condition should
never happen, so use WARN_ON_ONCE() to catch unexpected out-of-bounds
access and return a valid fallback format instead.
Suggested-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Fixes: 3d8a97eabef0 ("media: tegra-video: Add Tegra210 Video input driver")
Cc: stable@vger.kernel.org
Reviewed-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Signed-off-by: Hungyu Lin <dennylin0707@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/staging/media/tegra-video/vi.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/staging/media/tegra-video/vi.c
+++ b/drivers/staging/media/tegra-video/vi.c
@@ -80,8 +80,8 @@ static int tegra_get_format_idx_by_code(
static u32 tegra_get_format_fourcc_by_idx(struct tegra_vi *vi,
unsigned int index)
{
- if (index >= vi->soc->nformats)
- return -EINVAL;
+ if (WARN_ON_ONCE(index >= vi->soc->nformats))
+ return vi->soc->video_formats[0].fourcc;
return vi->soc->video_formats[index].fourcc;
}
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 434/675] media: ti: vpe: unwind v4l2 device registration on probe error
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
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2026-07-30 14:12 ` [PATCH 6.18 433/675] media: tegra-video: vi: fix invalid u32 return value in format lookup Greg Kroah-Hartman
@ 2026-07-30 14:12 ` Greg Kroah-Hartman
2026-07-30 14:12 ` [PATCH 6.18 435/675] media: v4l2-ctrls-request: add NULL check in v4l2_ctrl_request_complete() Greg Kroah-Hartman
` (245 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:12 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Ijae Kim, Myeonghun Pak,
Yemike Abhilash Chandra, Hans Verkuil
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Myeonghun Pak <mhun512@gmail.com>
commit e0f1c9a90ef665f2587c274a8fed59f2dfc575a6 upstream.
If the vpe_top resource is missing, vpe_probe() returns -ENODEV after
v4l2_device_register() has succeeded. Probe failures do not call the
driver's remove callback, so the v4l2 device remains registered on that
error path.
Route that failure through the existing v4l2_device_unregister() unwind
label, matching the other errors after v4l2_device_register().
Fixes: 4d59c7d45585 ("media: ti-vpe: vpe: Add missing null pointer checks")
Cc: stable@vger.kernel.org
Co-developed-by: Ijae Kim <ae878000@gmail.com>
Signed-off-by: Ijae Kim <ae878000@gmail.com>
Signed-off-by: Myeonghun Pak <mhun512@gmail.com>
Reviewed-by: Yemike Abhilash Chandra <y-abhilashchandra@ti.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/media/platform/ti/vpe/vpe.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/media/platform/ti/vpe/vpe.c
+++ b/drivers/media/platform/ti/vpe/vpe.c
@@ -2546,7 +2546,8 @@ static int vpe_probe(struct platform_dev
"vpe_top");
if (!dev->res) {
dev_err(&pdev->dev, "missing 'vpe_top' resources data\n");
- return -ENODEV;
+ ret = -ENODEV;
+ goto v4l2_dev_unreg;
}
/*
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 435/675] media: v4l2-ctrls-request: add NULL check in v4l2_ctrl_request_complete()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
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2026-07-30 14:12 ` [PATCH 6.18 434/675] media: ti: vpe: unwind v4l2 device registration on probe error Greg Kroah-Hartman
@ 2026-07-30 14:12 ` Greg Kroah-Hartman
2026-07-30 14:12 ` [PATCH 6.18 436/675] media: v4l2-ctrls: validate HEVC active reference counts Greg Kroah-Hartman
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679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:12 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Sergey Shtylyov, Hans Verkuil
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Sergey Shtylyov <s.shtylyov@auroraos.dev>
commit caced3578bf9f104a4aaad8f46c4c719e705d9a6 upstream.
If CONFIG_MEDIA_CONTROLLER is undefined, media_request_object_find() will
always return NULL, so its 2nd call in v4l2_ctrl_request_complete() would
fail as well as the 1st one and thus cause hdl to have a wrong value (at
the top of memory) and list_for_each_entry() to iterate over the garbage
data located there. Add NULL check for the 2nd call and place the error
cleanup at the end of v4l2_ctrl_request_complete()...
Found by Linux Verification Center (linuxtesting.org) with the Svace static
analysis tool.
Fixes: c3bf5129f339 ("media: v4l2-ctrls: always copy the controls on completion")
Cc: stable@vger.kernel.org
Signed-off-by: Sergey Shtylyov <s.shtylyov@auroraos.dev>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/media/v4l2-core/v4l2-ctrls-request.c | 14 +++++++++-----
1 file changed, 9 insertions(+), 5 deletions(-)
--- a/drivers/media/v4l2-core/v4l2-ctrls-request.c
+++ b/drivers/media/v4l2-core/v4l2-ctrls-request.c
@@ -348,13 +348,12 @@ void v4l2_ctrl_request_complete(struct m
ret = v4l2_ctrl_handler_init(hdl, (main_hdl->nr_of_buckets - 1) * 8);
if (!ret)
ret = v4l2_ctrl_request_bind(req, hdl, main_hdl);
- if (ret) {
- v4l2_ctrl_handler_free(hdl);
- kfree(hdl);
- return;
- }
+ if (ret)
+ goto error;
hdl->request_is_queued = true;
obj = media_request_object_find(req, &req_ops, main_hdl);
+ if (!obj)
+ goto error;
}
hdl = container_of(obj, struct v4l2_ctrl_handler, req_obj);
@@ -389,6 +388,11 @@ void v4l2_ctrl_request_complete(struct m
mutex_unlock(main_hdl->lock);
media_request_object_complete(obj);
media_request_object_put(obj);
+ return;
+
+error:
+ v4l2_ctrl_handler_free(hdl);
+ kfree(hdl);
}
EXPORT_SYMBOL(v4l2_ctrl_request_complete);
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 436/675] media: v4l2-ctrls: validate HEVC active reference counts
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
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@ 2026-07-30 14:12 ` Greg Kroah-Hartman
2026-07-30 14:12 ` [PATCH 6.18 437/675] media: v4l2-fwnode: Fix subdev owner overwritten in v4l2_async_register_subdev_sensor() Greg Kroah-Hartman
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679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:12 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Pengpeng Hou, Nicolas Dufresne,
Hans Verkuil
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Pengpeng Hou <pengpeng@iscas.ac.cn>
commit afbe4bc252d90a6f8fad869b06d5430f615f22f9 upstream.
HEVC slice parameters are shared stateless V4L2 controls, but the common
validation path does not verify the active L0/L1 reference counts before
driver-specific code consumes them.
The original report came from Cedrus, but the active count bounds are
not Cedrus-specific. Validate them in the common HEVC slice control path
so stateless HEVC drivers get the same basic guarantees as soon as the
control is queued.
Do not reject ref_idx_l0/ref_idx_l1 entries here. Existing userspace may
use out-of-range sentinel values such as 0xff for missing references, and
some hardware can use that information for concealment. Keep this common
check limited to the active reference counts.
Fixes: d395a78db9eab ("media: hevc: Add decode params control")
Cc: stable@vger.kernel.org
Signed-off-by: Pengpeng Hou <pengpeng@iscas.ac.cn>
Reviewed-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/media/v4l2-core/v4l2-ctrls-core.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
--- a/drivers/media/v4l2-core/v4l2-ctrls-core.c
+++ b/drivers/media/v4l2-core/v4l2-ctrls-core.c
@@ -882,6 +882,7 @@ static int std_validate_compound(const s
struct v4l2_ctrl_h264_decode_params *p_h264_dec_params;
struct v4l2_ctrl_hevc_sps *p_hevc_sps;
struct v4l2_ctrl_hevc_pps *p_hevc_pps;
+ struct v4l2_ctrl_hevc_slice_params *p_hevc_slice_params;
struct v4l2_ctrl_hdr10_mastering_display *p_hdr10_mastering;
struct v4l2_ctrl_hevc_decode_params *p_hevc_decode_params;
struct v4l2_area *area;
@@ -1171,6 +1172,18 @@ static int std_validate_compound(const s
break;
case V4L2_CTRL_TYPE_HEVC_SLICE_PARAMS:
+ p_hevc_slice_params = p;
+
+ if (p_hevc_slice_params->num_ref_idx_l0_active_minus1 >=
+ V4L2_HEVC_DPB_ENTRIES_NUM_MAX)
+ return -EINVAL;
+
+ if (p_hevc_slice_params->slice_type != V4L2_HEVC_SLICE_TYPE_B)
+ break;
+
+ if (p_hevc_slice_params->num_ref_idx_l1_active_minus1 >=
+ V4L2_HEVC_DPB_ENTRIES_NUM_MAX)
+ return -EINVAL;
break;
case V4L2_CTRL_TYPE_HDR10_CLL_INFO:
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 437/675] media: v4l2-fwnode: Fix subdev owner overwritten in v4l2_async_register_subdev_sensor()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (435 preceding siblings ...)
2026-07-30 14:12 ` [PATCH 6.18 436/675] media: v4l2-ctrls: validate HEVC active reference counts Greg Kroah-Hartman
@ 2026-07-30 14:12 ` Greg Kroah-Hartman
2026-07-30 14:12 ` [PATCH 6.18 438/675] media: v4l2-subdev: Fail {enable,disable}_streams and s_streaming nicely Greg Kroah-Hartman
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679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:12 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Frank Li, Mirela Rabulea,
Laurent Pinchart, Sakari Ailus
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Mirela Rabulea <mirela.rabulea@nxp.com>
commit 06cb687a5132fcffe624c0070576ab852ac6b568 upstream.
The v4l2 helper v4l2_async_register_subdev_sensor() calls
v4l2_async_register_subdev(), which is a macro that expands to
__v4l2_async_register_subdev(sd,THIS_MODULE). Since the macro is expanded
inside v4l2-fwnode.c, THIS_MODULE resolves to the v4l2-fwnode module
rather than the sensor driver module that originally set sd->owner. When
v4l2-fwnode is built-in, THIS_MODULE evaluates to NULL, which then
overwrites the sensor driver's owner with NULL.
This causes the problem that the sensor module's reference count is never
incremented during async registration, so the module can be removed while
the subdevice is still in use by a notifier (e.g., a CSI-2 receiver
bridge driver).
Fix this by renaming v4l2_async_register_subdev_sensor() to
__v4l2_async_register_subdev_sensor() with an added explicit module
argument and introducing a wrapper macro:
#define v4l2_async_register_subdev_sensor(sd) \
__v4l2_async_register_subdev_sensor(sd, THIS_MODULE)
This ensures the sensor driver module is properly referenced even when
the sensor driver does not init the owner field before calling
v4l2_async_register_subdev_sensor() and prevents premature module removal.
Fixes: aef69d54755d ("media: v4l: fwnode: Add a convenience function for registering sensors")
Cc: stable@vger.kernel.org
Suggested-by: Frank Li <Frank.Li@nxp.com>
Link: https://lore.kernel.org/linux-media/20240315073125.275501-2-sakari.ailus@linux.intel.com/
Signed-off-by: Mirela Rabulea <mirela.rabulea@nxp.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/media/v4l2-core/v4l2-fwnode.c | 6 +++---
include/media/v4l2-async.h | 4 +++-
2 files changed, 6 insertions(+), 4 deletions(-)
--- a/drivers/media/v4l2-core/v4l2-fwnode.c
+++ b/drivers/media/v4l2-core/v4l2-fwnode.c
@@ -1246,7 +1246,7 @@ v4l2_async_nf_parse_fwnode_sensor(struct
return 0;
}
-int v4l2_async_register_subdev_sensor(struct v4l2_subdev *sd)
+int __v4l2_async_register_subdev_sensor(struct v4l2_subdev *sd, struct module *module)
{
struct v4l2_async_notifier *notifier;
int ret;
@@ -1272,7 +1272,7 @@ int v4l2_async_register_subdev_sensor(st
if (ret < 0)
goto out_cleanup;
- ret = v4l2_async_register_subdev(sd);
+ ret = __v4l2_async_register_subdev(sd, module);
if (ret < 0)
goto out_unregister;
@@ -1290,7 +1290,7 @@ out_cleanup:
return ret;
}
-EXPORT_SYMBOL_GPL(v4l2_async_register_subdev_sensor);
+EXPORT_SYMBOL_GPL(__v4l2_async_register_subdev_sensor);
MODULE_DESCRIPTION("V4L2 fwnode binding parsing library");
MODULE_LICENSE("GPL");
--- a/include/media/v4l2-async.h
+++ b/include/media/v4l2-async.h
@@ -333,8 +333,10 @@ int __v4l2_async_register_subdev(struct
* An error is returned if the module is no longer loaded on any attempts
* to register it.
*/
+#define v4l2_async_register_subdev_sensor(sd) \
+ __v4l2_async_register_subdev_sensor(sd, THIS_MODULE)
int __must_check
-v4l2_async_register_subdev_sensor(struct v4l2_subdev *sd);
+__v4l2_async_register_subdev_sensor(struct v4l2_subdev *sd, struct module *module);
/**
* v4l2_async_unregister_subdev - unregisters a sub-device to the asynchronous
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 438/675] media: v4l2-subdev: Fail {enable,disable}_streams and s_streaming nicely
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
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2026-07-30 14:12 ` [PATCH 6.18 437/675] media: v4l2-fwnode: Fix subdev owner overwritten in v4l2_async_register_subdev_sensor() Greg Kroah-Hartman
@ 2026-07-30 14:12 ` Greg Kroah-Hartman
2026-07-30 14:12 ` [PATCH 6.18 439/675] media: vb2: use ssize_t for vb2_read/vb2_write Greg Kroah-Hartman
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From: Greg Kroah-Hartman @ 2026-07-30 14:12 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Sakari Ailus, Laurent Pinchart
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Sakari Ailus <sakari.ailus@linux.intel.com>
commit 0bcbfd1c1142d85faef8df5cb679d37f71394c5f upstream.
If a sub-device does not set enable_streams() and disable_streams() pad
ops while it sets the s_stream() video op to
v4l2_subdev_s_stream_helper(), enabling or disabling streaming either way
on the sub-device will result calling v4l2_subdev_s_stream_helper() and
v4l2_subdev_{enable,disable}_streams() recursively, exhausting the stack.
Return -ENOIOCTLCMD in this case to handle the situation gracefully.
Fixes: b62949ddaa52 ("media: subdev: Support single-stream case in v4l2_subdev_enable/disable_streams()")
Cc: stable@vger.kernel.org
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/media/v4l2-core/v4l2-subdev.c | 4 ++++
1 file changed, 4 insertions(+)
--- a/drivers/media/v4l2-core/v4l2-subdev.c
+++ b/drivers/media/v4l2-core/v4l2-subdev.c
@@ -2506,6 +2506,10 @@ int v4l2_subdev_s_stream_helper(struct v
u64 source_mask = 0;
int pad_index = -1;
+ if (WARN_ON(!v4l2_subdev_has_op(sd, pad, enable_streams) ||
+ !v4l2_subdev_has_op(sd, pad, disable_streams)))
+ return -ENOIOCTLCMD;
+
/*
* Find the source pad. This helper is meant for subdevs that have a
* single source pad, so failures shouldn't happen, but catch them
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 439/675] media: vb2: use ssize_t for vb2_read/vb2_write
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (437 preceding siblings ...)
2026-07-30 14:12 ` [PATCH 6.18 438/675] media: v4l2-subdev: Fail {enable,disable}_streams and s_streaming nicely Greg Kroah-Hartman
@ 2026-07-30 14:12 ` Greg Kroah-Hartman
2026-07-30 14:12 ` [PATCH 6.18 440/675] media: verisilicon: Export only needed pixels formats Greg Kroah-Hartman
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From: Greg Kroah-Hartman @ 2026-07-30 14:12 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Zile Xiong, Marek Szyprowski,
Hans Verkuil
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Zile Xiong <xiongzile99@gmail.com>
commit a562d6dc86bdfdd299e1b4734977a8d63e803583 upstream.
vb2_read() and vb2_write() return size_t, but propagate
negative errno values from __vb2_perform_fileio().
This relies on implicit signed/unsigned conversions in callers
(e.g. vb2_fop_read()) to recover error codes:
__vb2_perform_fileio() -> -EINVAL
vb2_read() -> (size_t)-EINVAL
vb2_fop_read() -> -EINVAL
This relies on implicit conversions that are not obvious.
These helpers are exported (EXPORT_SYMBOL_GPL) and part of the
vb2 API, so changing their return type may affect existing users.
However, they conceptually follow read/write semantics, where
ssize_t is typically used to return either a byte count or a
negative error code.
Switch vb2_read() and vb2_write() to ssize_t, and update
__vb2_perform_fileio() accordingly.
Signed-off-by: Zile Xiong <xiongzile99@gmail.com>
Acked-by: Marek Szyprowski <m.szyprowski@samsung.com>
Fixes: b25748fe6126 ("[media] v4l: videobuf2: add read() and write() emulator")
Cc: stable@vger.kernel.org
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/media/common/videobuf2/videobuf2-core.c | 12 ++++++------
include/media/videobuf2-core.h | 8 ++++----
2 files changed, 10 insertions(+), 10 deletions(-)
--- a/drivers/media/common/videobuf2/videobuf2-core.c
+++ b/drivers/media/common/videobuf2/videobuf2-core.c
@@ -3006,8 +3006,8 @@ static int __vb2_cleanup_fileio(struct v
* @nonblock: mode selector (1 means blocking calls, 0 means nonblocking)
* @read: access mode selector (1 means read, 0 means write)
*/
-static size_t __vb2_perform_fileio(struct vb2_queue *q, char __user *data, size_t count,
- loff_t *ppos, int nonblock, int read)
+static ssize_t __vb2_perform_fileio(struct vb2_queue *q, char __user *data, size_t count,
+ loff_t *ppos, int nonblock, int read)
{
struct vb2_fileio_data *fileio;
struct vb2_fileio_buf *buf;
@@ -3170,15 +3170,15 @@ static size_t __vb2_perform_fileio(struc
return ret;
}
-size_t vb2_read(struct vb2_queue *q, char __user *data, size_t count,
- loff_t *ppos, int nonblocking)
+ssize_t vb2_read(struct vb2_queue *q, char __user *data, size_t count,
+ loff_t *ppos, int nonblocking)
{
return __vb2_perform_fileio(q, data, count, ppos, nonblocking, 1);
}
EXPORT_SYMBOL_GPL(vb2_read);
-size_t vb2_write(struct vb2_queue *q, const char __user *data, size_t count,
- loff_t *ppos, int nonblocking)
+ssize_t vb2_write(struct vb2_queue *q, const char __user *data, size_t count,
+ loff_t *ppos, int nonblocking)
{
return __vb2_perform_fileio(q, (char __user *) data, count,
ppos, nonblocking, 0);
--- a/include/media/videobuf2-core.h
+++ b/include/media/videobuf2-core.h
@@ -1106,8 +1106,8 @@ __poll_t vb2_core_poll(struct vb2_queue
* @ppos: file handle position tracking pointer
* @nonblock: mode selector (1 means blocking calls, 0 means nonblocking)
*/
-size_t vb2_read(struct vb2_queue *q, char __user *data, size_t count,
- loff_t *ppos, int nonblock);
+ssize_t vb2_read(struct vb2_queue *q, char __user *data, size_t count,
+ loff_t *ppos, int nonblock);
/**
* vb2_write() - implements write() syscall logic.
* @q: pointer to &struct vb2_queue with videobuf2 queue.
@@ -1116,8 +1116,8 @@ size_t vb2_read(struct vb2_queue *q, cha
* @ppos: file handle position tracking pointer
* @nonblock: mode selector (1 means blocking calls, 0 means nonblocking)
*/
-size_t vb2_write(struct vb2_queue *q, const char __user *data, size_t count,
- loff_t *ppos, int nonblock);
+ssize_t vb2_write(struct vb2_queue *q, const char __user *data, size_t count,
+ loff_t *ppos, int nonblock);
/**
* typedef vb2_thread_fnc - callback function for use with vb2_thread.
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 440/675] media: verisilicon: Export only needed pixels formats
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
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@ 2026-07-30 14:12 ` Greg Kroah-Hartman
2026-07-30 14:12 ` [PATCH 6.18 441/675] media: vidtv: fix reference leak on failed device registration Greg Kroah-Hartman
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679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:12 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Benjamin Gaignard, Nicolas Dufresne,
Hans Verkuil
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Benjamin Gaignard <benjamin.gaignard@collabora.com>
commit e0f5d6ae76423ec5b6f97c7c3e1f02187b988afd upstream.
Some pixel formats can only be produced if the decoder outputs
reference pictures directly. In some cases, such as AV1 film-grain,
the use of the post-processor is strictly required. In this case,
only enumerate the post-processor supported formats. The exception is
when V4L2_FMTDESC_FLAG_ENUM_ALL is set, in this case, we enumerate
everything regardless of the state.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Fixes: bcd4f091cf1e ("media: verisilicon: Use V4L2_FMTDESC_FLAG_ENUM_ALL flag")
Cc: stable@vger.kernel.org
Reviewed-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/media/platform/verisilicon/hantro_v4l2.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
--- a/drivers/media/platform/verisilicon/hantro_v4l2.c
+++ b/drivers/media/platform/verisilicon/hantro_v4l2.c
@@ -222,6 +222,7 @@ static int vidioc_enum_fmt(struct file *
unsigned int num_fmts, i, j = 0;
bool skip_mode_none, enum_all_formats;
u32 index = f->index & ~V4L2_FMTDESC_FLAG_ENUM_ALL;
+ bool need_postproc = ctx->need_postproc;
/*
* If the V4L2_FMTDESC_FLAG_ENUM_ALL flag is set, we want to enumerate all
@@ -230,6 +231,9 @@ static int vidioc_enum_fmt(struct file *
enum_all_formats = !!(f->index & V4L2_FMTDESC_FLAG_ENUM_ALL);
f->index = index;
+ if (enum_all_formats)
+ need_postproc = HANTRO_AUTO_POSTPROC;
+
/*
* When dealing with an encoder:
* - on the capture side we want to filter out all MODE_NONE formats.
@@ -242,7 +246,7 @@ static int vidioc_enum_fmt(struct file *
*/
skip_mode_none = capture == ctx->is_encoder;
- formats = hantro_get_formats(ctx, &num_fmts, HANTRO_AUTO_POSTPROC);
+ formats = hantro_get_formats(ctx, &num_fmts, need_postproc);
for (i = 0; i < num_fmts; i++) {
bool mode_none = formats[i].codec_mode == HANTRO_MODE_NONE;
fmt = &formats[i];
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 441/675] media: vidtv: fix reference leak on failed device registration
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
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2026-07-30 14:12 ` [PATCH 6.18 440/675] media: verisilicon: Export only needed pixels formats Greg Kroah-Hartman
@ 2026-07-30 14:12 ` Greg Kroah-Hartman
2026-07-30 14:12 ` [PATCH 6.18 442/675] media: vimc: " Greg Kroah-Hartman
` (238 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:12 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Guangshuo Li, Hans Verkuil
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Guangshuo Li <lgs201920130244@gmail.com>
commit 9aa21e1549db8882ff77b691e7714153df21dff0 upstream.
When platform_device_register() fails in vidtv_bridge_init(), the
embedded struct device in vidtv_bridge_dev has already been initialized
by device_initialize(), but the failure path returns the error without
dropping the device reference for the current platform device:
vidtv_bridge_init()
-> platform_device_register(&vidtv_bridge_dev)
-> device_initialize(&vidtv_bridge_dev.dev)
-> setup_pdev_dma_masks(&vidtv_bridge_dev)
-> platform_device_add(&vidtv_bridge_dev)
This leads to a reference leak when platform_device_register() fails.
Fix this by calling platform_device_put() before returning the error.
The issue was identified by a static analysis tool I developed and
confirmed by manual review.
Fixes: f90cf6079bf67 ("media: vidtv: add a bridge driver")
Cc: stable@vger.kernel.org
Signed-off-by: Guangshuo Li <lgs201920130244@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/media/test-drivers/vidtv/vidtv_bridge.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--- a/drivers/media/test-drivers/vidtv/vidtv_bridge.c
+++ b/drivers/media/test-drivers/vidtv/vidtv_bridge.c
@@ -594,8 +594,10 @@ static int __init vidtv_bridge_init(void
int ret;
ret = platform_device_register(&vidtv_bridge_dev);
- if (ret)
+ if (ret) {
+ platform_device_put(&vidtv_bridge_dev);
return ret;
+ }
ret = platform_driver_register(&vidtv_bridge_driver);
if (ret)
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 442/675] media: vimc: fix reference leak on failed device registration
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (440 preceding siblings ...)
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@ 2026-07-30 14:12 ` Greg Kroah-Hartman
2026-07-30 14:12 ` [PATCH 6.18 443/675] media: vivid: add vivid_update_reduced_fps() Greg Kroah-Hartman
` (237 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:12 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Guangshuo Li, Hans Verkuil
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Guangshuo Li <lgs201920130244@gmail.com>
commit 33e2b833c66b890a0d71c4fa82d4c97143f7f75f upstream.
When platform_device_register() fails in vimc_init(), the embedded
struct device in vimc_pdev has already been initialized by
device_initialize(), but the failure path returns the error without
dropping the device reference for the current platform device:
vimc_init()
-> platform_device_register(&vimc_pdev)
-> device_initialize(&vimc_pdev.dev)
-> setup_pdev_dma_masks(&vimc_pdev)
-> platform_device_add(&vimc_pdev)
This leads to a reference leak when platform_device_register() fails.
Fix this by calling platform_device_put() before returning the error.
The issue was identified by a static analysis tool I developed and
confirmed by manual review.
Fixes: 4babf057c143f ("media: vimc: allocate vimc_device dynamically")
Cc: stable@vger.kernel.org
Signed-off-by: Guangshuo Li <lgs201920130244@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/media/test-drivers/vimc/vimc-core.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/media/test-drivers/vimc/vimc-core.c
+++ b/drivers/media/test-drivers/vimc/vimc-core.c
@@ -422,6 +422,7 @@ static int __init vimc_init(void)
if (ret) {
dev_err(&vimc_pdev.dev,
"platform device registration failed (err=%d)\n", ret);
+ platform_device_put(&vimc_pdev);
return ret;
}
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 443/675] media: vivid: add vivid_update_reduced_fps()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (441 preceding siblings ...)
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@ 2026-07-30 14:12 ` Greg Kroah-Hartman
2026-07-30 14:12 ` [PATCH 6.18 444/675] media: vivid: check for vb2_is_busy() when toggling caps Greg Kroah-Hartman
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From: Greg Kroah-Hartman @ 2026-07-30 14:12 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Nicolas Dufresne, Hans Verkuil
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Hans Verkuil <hverkuil+cisco@kernel.org>
commit 1d793a29efb4260f90913f5287939bf95573b073 upstream.
Don't call vivid_update_format_cap() when switching to/from reduced fps
for HDMI inputs: that will also reset the format, which is overkill for
this.
Make a new vivid_update_reduced_fps() function that just updates the
dev->timeperframe_vid_cap.
Reviewed-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Fixes: c79aa6aeadb0 ("[media] vivid-capture: add control for reduced frame rate")
Cc: stable@vger.kernel.org
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/media/test-drivers/vivid/vivid-ctrls.c | 3 +-
drivers/media/test-drivers/vivid/vivid-vid-cap.c | 32 +++++++++++++----------
drivers/media/test-drivers/vivid/vivid-vid-cap.h | 1
3 files changed, 22 insertions(+), 14 deletions(-)
--- a/drivers/media/test-drivers/vivid/vivid-ctrls.c
+++ b/drivers/media/test-drivers/vivid/vivid-ctrls.c
@@ -609,7 +609,8 @@ static int vivid_vid_cap_s_ctrl(struct v
break;
case VIVID_CID_REDUCED_FPS:
dev->reduced_fps = ctrl->val;
- vivid_update_format_cap(dev, true);
+ if (dev->input_type[dev->input] == HDMI)
+ vivid_update_reduced_fps(dev);
break;
case VIVID_CID_HAS_CROP_CAP:
dev->has_crop_cap = ctrl->val;
--- a/drivers/media/test-drivers/vivid/vivid-vid-cap.c
+++ b/drivers/media/test-drivers/vivid/vivid-vid-cap.c
@@ -362,6 +362,24 @@ static enum tpg_pixel_aspect vivid_get_p
return TPG_PIXEL_ASPECT_SQUARE;
}
+void vivid_update_reduced_fps(struct vivid_dev *dev)
+{
+ struct v4l2_bt_timings *bt = &dev->dv_timings_cap[dev->input].bt;
+ unsigned int size = V4L2_DV_BT_FRAME_WIDTH(bt) * V4L2_DV_BT_FRAME_HEIGHT(bt);
+ u64 pixelclock;
+
+ if (dev->reduced_fps && can_reduce_fps(bt)) {
+ pixelclock = div_u64(bt->pixelclock * 1000, 1001);
+ bt->flags |= V4L2_DV_FL_REDUCED_FPS;
+ } else {
+ pixelclock = bt->pixelclock;
+ bt->flags &= ~V4L2_DV_FL_REDUCED_FPS;
+ }
+ dev->timeperframe_vid_cap = (struct v4l2_fract) {
+ size / 100, (u32)pixelclock / 100
+ };
+}
+
/*
* Called whenever the format has to be reset which can occur when
* changing inputs, standard, timings, etc.
@@ -370,8 +388,6 @@ void vivid_update_format_cap(struct vivi
{
struct v4l2_bt_timings *bt = &dev->dv_timings_cap[dev->input].bt;
u32 dims[V4L2_CTRL_MAX_DIMS] = {};
- unsigned size;
- u64 pixelclock;
switch (dev->input_type[dev->input]) {
case WEBCAM:
@@ -400,17 +416,7 @@ void vivid_update_format_cap(struct vivi
case HDMI:
dev->src_rect.width = bt->width;
dev->src_rect.height = bt->height;
- size = V4L2_DV_BT_FRAME_WIDTH(bt) * V4L2_DV_BT_FRAME_HEIGHT(bt);
- if (dev->reduced_fps && can_reduce_fps(bt)) {
- pixelclock = div_u64(bt->pixelclock * 1000, 1001);
- bt->flags |= V4L2_DV_FL_REDUCED_FPS;
- } else {
- pixelclock = bt->pixelclock;
- bt->flags &= ~V4L2_DV_FL_REDUCED_FPS;
- }
- dev->timeperframe_vid_cap = (struct v4l2_fract) {
- size / 100, (u32)pixelclock / 100
- };
+ vivid_update_reduced_fps(dev);
if (bt->interlaced)
dev->field_cap = V4L2_FIELD_ALTERNATE;
else
--- a/drivers/media/test-drivers/vivid/vivid-vid-cap.h
+++ b/drivers/media/test-drivers/vivid/vivid-vid-cap.h
@@ -9,6 +9,7 @@
#define _VIVID_VID_CAP_H_
void vivid_update_quality(struct vivid_dev *dev);
+void vivid_update_reduced_fps(struct vivid_dev *dev);
void vivid_update_format_cap(struct vivid_dev *dev, bool keep_controls);
void vivid_update_outputs(struct vivid_dev *dev);
void vivid_update_connected_outputs(struct vivid_dev *dev);
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 444/675] media: vivid: check for vb2_is_busy() when toggling caps
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (442 preceding siblings ...)
2026-07-30 14:12 ` [PATCH 6.18 443/675] media: vivid: add vivid_update_reduced_fps() Greg Kroah-Hartman
@ 2026-07-30 14:12 ` Greg Kroah-Hartman
2026-07-30 14:12 ` [PATCH 6.18 445/675] media: vivid: fix cleanup bugs in vivid_init() Greg Kroah-Hartman
` (235 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:12 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Nicolas Dufresne,
syzbot+dac8f5eaa46837e97b89, Hans Verkuil
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Hans Verkuil <hverkuil+cisco@kernel.org>
commit c2d1a2130c93f6d758af58590b86b2254c7a1dec upstream.
The vivid_update_format_cap/out() functions must only be called if the
capture/output queue are not busy. But for the controls that select
the CROP/COMPOSE/SCALE capability that is not checked.
Only when streaming starts will they be set to 'grabbed' and it is
impossible to change the control, but between REQBUFS and STREAMON you
are still allowed to set these controls. Since vivid_update_format_cap/out
will change the format, this can cause unexpected results.
Besides adding these checks, also add a WARN_ON in
vivid_update_format_cap/out() if the queue is busy.
I'm 90% certain that this is the cause of this syzbot bug:
https://syzkaller.appspot.com/bug?extid=dac8f5eaa46837e97b89
But since we never have reproducers, it is hard to be certain. In any case,
these checks are needed regardless.
Reviewed-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Fixes: 73c3f48230cd ("[media] vivid: add the control handling code")
Cc: stable@vger.kernel.org
Reported-by: syzbot+dac8f5eaa46837e97b89@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=dac8f5eaa46837e97b89
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/media/test-drivers/vivid/vivid-ctrls.c | 12 ++++++++++++
drivers/media/test-drivers/vivid/vivid-vid-cap.c | 6 ++++++
drivers/media/test-drivers/vivid/vivid-vid-out.c | 6 ++++++
3 files changed, 24 insertions(+)
--- a/drivers/media/test-drivers/vivid/vivid-ctrls.c
+++ b/drivers/media/test-drivers/vivid/vivid-ctrls.c
@@ -613,14 +613,20 @@ static int vivid_vid_cap_s_ctrl(struct v
vivid_update_reduced_fps(dev);
break;
case VIVID_CID_HAS_CROP_CAP:
+ if (vb2_is_busy(&dev->vb_vid_cap_q))
+ return -EBUSY;
dev->has_crop_cap = ctrl->val;
vivid_update_format_cap(dev, true);
break;
case VIVID_CID_HAS_COMPOSE_CAP:
+ if (vb2_is_busy(&dev->vb_vid_cap_q))
+ return -EBUSY;
dev->has_compose_cap = ctrl->val;
vivid_update_format_cap(dev, true);
break;
case VIVID_CID_HAS_SCALER_CAP:
+ if (vb2_is_busy(&dev->vb_vid_cap_q))
+ return -EBUSY;
dev->has_scaler_cap = ctrl->val;
vivid_update_format_cap(dev, true);
break;
@@ -1117,14 +1123,20 @@ static int vivid_vid_out_s_ctrl(struct v
switch (ctrl->id) {
case VIVID_CID_HAS_CROP_OUT:
+ if (vb2_is_busy(&dev->vb_vid_out_q))
+ return -EBUSY;
dev->has_crop_out = ctrl->val;
vivid_update_format_out(dev);
break;
case VIVID_CID_HAS_COMPOSE_OUT:
+ if (vb2_is_busy(&dev->vb_vid_out_q))
+ return -EBUSY;
dev->has_compose_out = ctrl->val;
vivid_update_format_out(dev);
break;
case VIVID_CID_HAS_SCALER_OUT:
+ if (vb2_is_busy(&dev->vb_vid_out_q))
+ return -EBUSY;
dev->has_scaler_out = ctrl->val;
vivid_update_format_out(dev);
break;
--- a/drivers/media/test-drivers/vivid/vivid-vid-cap.c
+++ b/drivers/media/test-drivers/vivid/vivid-vid-cap.c
@@ -389,6 +389,12 @@ void vivid_update_format_cap(struct vivi
struct v4l2_bt_timings *bt = &dev->dv_timings_cap[dev->input].bt;
u32 dims[V4L2_CTRL_MAX_DIMS] = {};
+ /*
+ * This resets the format, so must never be called while vb2_is_busy().
+ */
+ if (WARN_ON(vb2_is_busy(&dev->vb_vid_cap_q)))
+ return;
+
switch (dev->input_type[dev->input]) {
case WEBCAM:
default:
--- a/drivers/media/test-drivers/vivid/vivid-vid-out.c
+++ b/drivers/media/test-drivers/vivid/vivid-vid-out.c
@@ -214,6 +214,12 @@ void vivid_update_format_out(struct vivi
unsigned size, p;
u64 pixelclock;
+ /*
+ * This resets the format, so must never be called while vb2_is_busy().
+ */
+ if (WARN_ON(vb2_is_busy(&dev->vb_vid_out_q)))
+ return;
+
switch (dev->output_type[dev->output]) {
case SVID:
default:
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 445/675] media: vivid: fix cleanup bugs in vivid_init()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (443 preceding siblings ...)
2026-07-30 14:12 ` [PATCH 6.18 444/675] media: vivid: check for vb2_is_busy() when toggling caps Greg Kroah-Hartman
@ 2026-07-30 14:12 ` Greg Kroah-Hartman
2026-07-30 14:12 ` [PATCH 6.18 446/675] media: vpif_capture: fix OF node reference imbalance Greg Kroah-Hartman
` (234 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:12 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Guangshuo Li, Hans Verkuil
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Guangshuo Li <lgs201920130244@gmail.com>
commit a07c179a92e949172ca52f6d4a13202ea88cd4b7 upstream.
When platform_device_register() fails in vivid_init(), the embedded
struct device in vivid_pdev has already been initialized by
device_initialize(), but the failure path jumps to free_output_strings
without dropping the device reference for the current platform device:
vivid_init()
-> platform_device_register(&vivid_pdev)
-> device_initialize(&vivid_pdev.dev)
-> setup_pdev_dma_masks(&vivid_pdev)
-> platform_device_add(&vivid_pdev)
This leads to a reference leak when platform_device_register() fails.
Fix this by calling platform_device_put() before jumping to the common
cleanup path.
Also, the unreg_driver label incorrectly calls
platform_driver_register() instead of platform_driver_unregister(),
which breaks cleanup when workqueue creation fails after successful
driver registration. Fix that as well.
The reference leak was identified by a static analysis tool I developed
and confirmed by manual review. The incorrect cleanup call was found
during code inspection.
Fixes: f46d740fb0258 ("[media] vivid: turn this into a platform_device")
Fixes: d7c969f37515d ("media: vivid: Add 'Is Connected To' menu controls")
Cc: stable@vger.kernel.org
Signed-off-by: Guangshuo Li <lgs201920130244@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/media/test-drivers/vivid/vivid-core.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
--- a/drivers/media/test-drivers/vivid/vivid-core.c
+++ b/drivers/media/test-drivers/vivid/vivid-core.c
@@ -2289,8 +2289,10 @@ static int __init vivid_init(void)
}
}
ret = platform_device_register(&vivid_pdev);
- if (ret)
+ if (ret) {
+ platform_device_put(&vivid_pdev);
goto free_output_strings;
+ }
ret = platform_driver_register(&vivid_pdrv);
if (ret)
goto unreg_device;
@@ -2311,7 +2313,7 @@ static int __init vivid_init(void)
destroy_hdmi_wq:
destroy_workqueue(update_hdmi_ctrls_workqueue);
unreg_driver:
- platform_driver_register(&vivid_pdrv);
+ platform_driver_unregister(&vivid_pdrv);
unreg_device:
platform_device_unregister(&vivid_pdev);
free_output_strings:
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 446/675] media: vpif_capture: fix OF node reference imbalance
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (444 preceding siblings ...)
2026-07-30 14:12 ` [PATCH 6.18 445/675] media: vivid: fix cleanup bugs in vivid_init() Greg Kroah-Hartman
@ 2026-07-30 14:12 ` Greg Kroah-Hartman
2026-07-30 14:12 ` [PATCH 6.18 447/675] ALSA: hda/realtek: Fix speakers on Lunnen Ground 14 Greg Kroah-Hartman
` (233 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:12 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Kevin Hilman, Johan Hovold,
Hans Verkuil
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Johan Hovold <johan@kernel.org>
commit 2282f979560af6bbc8ee2c1ee8663197312cee5b upstream.
The driver reuses the OF node of the parent device but fails to take
another reference to balance the one dropped by the platform bus code
when unbinding the parent and releasing the child devices.
Fix this by using the intended helper for reusing OF nodes.
Fixes: 4a5f8ae50b66 ("[media] davinci: vpif_capture: get subdevs from DT when available")
Cc: stable@vger.kernel.org # 4.13
Cc: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/media/platform/ti/davinci/vpif_capture.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/media/platform/ti/davinci/vpif_capture.c
+++ b/drivers/media/platform/ti/davinci/vpif_capture.c
@@ -1499,7 +1499,7 @@ vpif_capture_get_pdata(struct platform_d
* video ports & endpoints data.
*/
if (pdev->dev.parent && pdev->dev.parent->of_node)
- pdev->dev.of_node = pdev->dev.parent->of_node;
+ device_set_of_node_from_dev(&pdev->dev, pdev->dev.parent);
if (!IS_ENABLED(CONFIG_OF) || !pdev->dev.of_node)
return pdev->dev.platform_data;
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 447/675] ALSA: hda/realtek: Fix speakers on Lunnen Ground 14
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (445 preceding siblings ...)
2026-07-30 14:12 ` [PATCH 6.18 446/675] media: vpif_capture: fix OF node reference imbalance Greg Kroah-Hartman
@ 2026-07-30 14:12 ` Greg Kroah-Hartman
2026-07-30 14:12 ` [PATCH 6.18 448/675] ALSA: seq: close a re-opened queue timer in the destructor Greg Kroah-Hartman
` (232 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:12 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Nikita Maksimov, Takashi Iwai
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Nikita Maksimov <nickstogramm@yandex.ru>
commit 5c3f8dac531b454bf67b6ee3c2aac89f0aaaef74 upstream.
The firmware on the Lunnen Ground 14 marks pin 0x1b as unused even
though the internal speakers are connected to it. As a result, the
speakers are not detected.
Add a pin configuration quirk for PCI subsystem ID 2782:a212 to configure
pin 0x1b as an internal speaker.
The pin configuration was tested on a Lunnen Ground 14 (DMI product LL4FA)
with an ALC269VC codec. The internal speakers and microphone work as
expected.
Cc: stable@vger.kernel.org
Signed-off-by: Nikita Maksimov <nickstogramm@yandex.ru>
Link: https://patch.msgid.link/20260720180214.73770-1-nickstogramm@yandex.ru
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
sound/hda/codecs/realtek/alc269.c | 9 +++++++++
1 file changed, 9 insertions(+)
--- a/sound/hda/codecs/realtek/alc269.c
+++ b/sound/hda/codecs/realtek/alc269.c
@@ -3742,6 +3742,7 @@ enum {
ALC269_FIXUP_DMIC_THINKPAD_ACPI,
ALC269VB_FIXUP_INFINIX_ZERO_BOOK_13,
ALC269VC_FIXUP_INFINIX_Y4_MAX,
+ ALC269VC_FIXUP_LUNNEN_GROUND_14,
ALC269VB_FIXUP_CHUWI_COREBOOK_XPRO,
ALC255_FIXUP_ACER_MIC_NO_PRESENCE,
ALC255_FIXUP_ASUS_MIC_NO_PRESENCE,
@@ -4183,6 +4184,13 @@ static const struct hda_fixup alc269_fix
.chained = true,
.chain_id = ALC269_FIXUP_LIMIT_INT_MIC_BOOST
},
+ [ALC269VC_FIXUP_LUNNEN_GROUND_14] = {
+ .type = HDA_FIXUP_PINS,
+ .v.pins = (const struct hda_pintbl[]) {
+ { 0x1b, 0x90170150 }, /* internal speaker */
+ { }
+ },
+ },
[ALC269VB_FIXUP_CHUWI_COREBOOK_XPRO] = {
.type = HDA_FIXUP_PINS,
.v.pins = (const struct hda_pintbl[]) {
@@ -7573,6 +7581,7 @@ static const struct hda_quirk alc269_fix
SND_PCI_QUIRK(0x2782, 0x1705, "MEDION E15433", ALC269VC_FIXUP_INFINIX_Y4_MAX),
SND_PCI_QUIRK(0x2782, 0x1707, "Vaio VJFE-ADL", ALC298_FIXUP_SPK_VOLUME),
SND_PCI_QUIRK(0x2782, 0x4900, "MEDION E15443", ALC233_FIXUP_MEDION_MTL_SPK),
+ SND_PCI_QUIRK(0x2782, 0xa212, "Lunnen Ground 14", ALC269VC_FIXUP_LUNNEN_GROUND_14),
SND_PCI_QUIRK(0x7017, 0x2014, "Star Labs StarFighter", ALC233_FIXUP_STARLABS_STARFIGHTER),
SND_PCI_QUIRK(0x8086, 0x2074, "Intel NUC 8", ALC233_FIXUP_INTEL_NUC8_DMIC),
SND_PCI_QUIRK(0x8086, 0x2080, "Intel NUC 8 Rugged", ALC256_FIXUP_INTEL_NUC8_RUGGED),
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 448/675] ALSA: seq: close a re-opened queue timer in the destructor
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (446 preceding siblings ...)
2026-07-30 14:12 ` [PATCH 6.18 447/675] ALSA: hda/realtek: Fix speakers on Lunnen Ground 14 Greg Kroah-Hartman
@ 2026-07-30 14:12 ` Greg Kroah-Hartman
2026-07-30 14:12 ` [PATCH 6.18 449/675] ALSA: hda: codecs: hdmi: disable keep-alive before audio format change Greg Kroah-Hartman
` (231 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:12 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Norbert Szetei, Takashi Iwai
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Norbert Szetei <norbert@doyensec.com>
commit 2c4dc0ed50b05cd847a4b34b8cebf0775f19aeb9 upstream.
queue_delete() closes the queue timer, then frees it. snd_seq_timer_close()
clears q->timer->timeri. snd_use_lock_sync() then drains borrowers, and
snd_seq_timer_delete() frees q->timer.
A borrower can re-open the timer inside that window. A SET_QUEUE_CLIENT
that took a queueptr() use_lock reference before the queue was unlinked
runs snd_seq_timer_open() after the close. Open refuses re-open only while
timeri is set, and the close just cleared it, so it re-opens timeri.
snd_seq_timer_delete() does not close that instance. Its snd_seq_timer_stop()
is a no-op, because running was cleared first. So it frees q->timer with the
instance still live. The queue is freed next.
The instance stays on the global timer with callback_data pointing at the
freed queue. A non-owner START on the unlocked queue arms it. The next tick
derefs the freed queue in snd_seq_timer_interrupt().
Reachable by an unprivileged user with access to /dev/snd/seq. No CAP and
no queue ownership required.
Close any lingering instance in the destructor. There, ->timeri can no
longer change: the queue is unlinked and all use_lock borrowers have
drained, so no snd_seq_queue_use() can re-open it. Close it before clearing
q->timer. snd_timer_close() waits for any in-flight snd_seq_timer_interrupt()
to finish, and that callback still reads q->timer (via snd_seq_check_queue()),
so q->timer must stay valid until it drains.
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Cc: stable@vger.kernel.org
Assisted-by: Claude:claude-opus-4-8
Signed-off-by: Norbert Szetei <norbert@doyensec.com>
Link: https://patch.msgid.link/422FDB81-2A68-47C7-A22D-2D3301E2E86D@doyensec.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
sound/core/seq/seq_timer.c | 13 ++++++++++++-
1 file changed, 12 insertions(+), 1 deletion(-)
--- a/sound/core/seq/seq_timer.c
+++ b/sound/core/seq/seq_timer.c
@@ -61,12 +61,23 @@ struct snd_seq_timer *snd_seq_timer_new(
void snd_seq_timer_delete(struct snd_seq_timer **tmr)
{
struct snd_seq_timer *t = *tmr;
- *tmr = NULL;
+ struct snd_timer_instance *ti;
if (t == NULL) {
pr_debug("ALSA: seq: snd_seq_timer_delete() called with NULL timer\n");
return;
}
+
+ scoped_guard(spinlock_irq, &t->lock) {
+ ti = t->timeri;
+ t->timeri = NULL;
+ }
+ if (ti) {
+ snd_timer_close(ti);
+ snd_timer_instance_free(ti);
+ }
+
+ *tmr = NULL;
t->running = 0;
/* reset time */
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 449/675] ALSA: hda: codecs: hdmi: disable keep-alive before audio format change
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (447 preceding siblings ...)
2026-07-30 14:12 ` [PATCH 6.18 448/675] ALSA: seq: close a re-opened queue timer in the destructor Greg Kroah-Hartman
@ 2026-07-30 14:12 ` Greg Kroah-Hartman
2026-07-30 14:13 ` [PATCH 6.18 450/675] ALSA: timer: drain a slaves callback before its master detaches it Greg Kroah-Hartman
` (230 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:12 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Alexander Kaplan, Kai Vehmanen,
Takashi Iwai
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Kai Vehmanen <kai.vehmanen@linux.intel.com>
commit a3d6d3cedfe87bbd5a677d52b22ac20d28e59cf8 upstream.
When a keep-alive (KAE) silent stream is active on an Intel HDMI/DP
codec, opening a real PCM stream reprograms the converter format and the
audio infoframe in snd_hda_hdmi_generic_pcm_prepare(). Part of that
reprogramming - the converter channel count and the channel mapping in
snd_hda_hdmi_setup_audio_infoframe() - is not safe to do while a
keep-alive stream is active. This is most visible when switching to a
multichannel PCM configuration, where the active channel count actually
changes. In that case the newly opened PCM stream plays no sound.
Add an optional hdmi_ops .prepare hook, called at the start of the
PCM prepare sequence (before the format and infoframe are touched), and
implement it for HSW+ to release keep-alive. Keep-alive is then
re-enabled as before once the new stream has been set up, in the
setup_stream op.
Fixes: 15175a4f2bbb ("ALSA: hda/hdmi: add keep-alive support for ADL-P and DG2")
Reported-by: Alexander Kaplan <alexander.kaplan@sms-medipool.de>
Closes: https://gitlab.freedesktop.org/drm/xe/kernel/-/work_items/8412
Tested-by: Alexander Kaplan <alexander.kaplan@sms-medipool.de>
Cc: <stable@vger.kernel.org>
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://patch.msgid.link/20260715180610.1371243-1-kai.vehmanen@linux.intel.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
sound/hda/codecs/hdmi/hdmi.c | 3 +++
sound/hda/codecs/hdmi/hdmi_local.h | 9 +++++++++
sound/hda/codecs/hdmi/intelhdmi.c | 36 ++++++++++++++++++++++++++++++------
3 files changed, 42 insertions(+), 6 deletions(-)
--- a/sound/hda/codecs/hdmi/hdmi.c
+++ b/sound/hda/codecs/hdmi/hdmi.c
@@ -1688,6 +1688,9 @@ int snd_hda_hdmi_generic_pcm_prepare(str
per_pin->channels = substream->runtime->channels;
per_pin->setup = true;
+ if (spec->ops.prepare)
+ spec->ops.prepare(codec, per_pin);
+
if (get_wcaps(codec, cvt_nid) & AC_WCAP_STRIPE) {
stripe = snd_hdac_get_stream_stripe_ctl(&codec->bus->core,
substream);
--- a/sound/hda/codecs/hdmi/hdmi_local.h
+++ b/sound/hda/codecs/hdmi/hdmi_local.h
@@ -74,6 +74,15 @@ struct hdmi_ops {
hda_nid_t pin_nid, int dev_id, u32 stream_tag,
int format);
+ /*
+ * Optional hook invoked at the beginning of the PCM prepare
+ * sequence, before the audio infoframe and stream format are
+ * (re)programmed. Used to disable keep-alive / silent stream so
+ * that the format change is not done while keep-alive is active.
+ */
+ void (*prepare)(struct hda_codec *codec,
+ struct hdmi_spec_per_pin *per_pin);
+
void (*pin_cvt_fixup)(struct hda_codec *codec,
struct hdmi_spec_per_pin *per_pin,
hda_nid_t cvt_nid);
--- a/sound/hda/codecs/hdmi/intelhdmi.c
+++ b/sound/hda/codecs/hdmi/intelhdmi.c
@@ -418,6 +418,28 @@ static void intel_not_share_assigned_cvt
intel_not_share_assigned_cvt(codec, pin_nid, dev_id, mux_idx);
}
+/*
+ * prepare ops override for HSW+
+ *
+ * Disable keep-alive before the converter format and audio infoframe are
+ * reprogrammed by the PCM prepare sequence. Changing the audio format (e.g.
+ * the channel count when switching to multichannel PCM) while a keep-alive
+ * stream is active is not safe, so release keep-alive here, early in the
+ * sequence. It is re-enabled once the new stream has been set up, in
+ * i915_hsw_setup_stream().
+ */
+static void i915_hsw_prepare(struct hda_codec *codec,
+ struct hdmi_spec_per_pin *per_pin)
+{
+ struct hdmi_spec *spec = codec->spec;
+
+ if (spec->silent_stream_type == SILENT_STREAM_KAE && per_pin->silent_stream) {
+ silent_stream_set_kae(codec, per_pin, false);
+ /* wait for pending transfers in codec to clear */
+ usleep_range(100, 200);
+ }
+}
+
/* setup_stream ops override for HSW+ */
static int i915_hsw_setup_stream(struct hda_codec *codec, hda_nid_t cvt_nid,
hda_nid_t pin_nid, int dev_id, u32 stream_tag,
@@ -435,15 +457,16 @@ static int i915_hsw_setup_stream(struct
haswell_verify_D0(codec, cvt_nid, pin_nid);
- if (spec->silent_stream_type == SILENT_STREAM_KAE && per_pin && per_pin->silent_stream) {
- silent_stream_set_kae(codec, per_pin, false);
- /* wait for pending transfers in codec to clear */
- usleep_range(100, 200);
- }
-
res = snd_hda_hdmi_setup_stream(codec, cvt_nid, pin_nid, dev_id,
stream_tag, format);
+ /*
+ * Keep-alive was disabled in i915_hsw_prepare(), re-enable it now.
+ * The pin lookup above resolves to the same per_pin that prepare
+ * used (pin_nid comes from that per_pin), so this stays balanced; a
+ * NULL per_pin only occurs on a lookup failure that also implies no
+ * active keep-alive stream to restore.
+ */
if (spec->silent_stream_type == SILENT_STREAM_KAE && per_pin && per_pin->silent_stream) {
usleep_range(100, 200);
silent_stream_set_kae(codec, per_pin, true);
@@ -607,6 +630,7 @@ static int intel_hsw_common_init(struct
codec->depop_delay = 0;
codec->auto_runtime_pm = 1;
+ spec->ops.prepare = i915_hsw_prepare;
spec->ops.setup_stream = i915_hsw_setup_stream;
spec->ops.pin_cvt_fixup = i915_pin_cvt_fixup;
spec->ops.silent_stream = i915_set_silent_stream;
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 450/675] ALSA: timer: drain a slaves callback before its master detaches it
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (448 preceding siblings ...)
2026-07-30 14:12 ` [PATCH 6.18 449/675] ALSA: hda: codecs: hdmi: disable keep-alive before audio format change Greg Kroah-Hartman
@ 2026-07-30 14:13 ` Greg Kroah-Hartman
2026-07-30 14:13 ` [PATCH 6.18 451/675] ALSA: timer: dont re-enter an instance callback that is still running Greg Kroah-Hartman
` (229 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:13 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Norbert Szetei, Takashi Iwai
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Norbert Szetei <norbert@doyensec.com>
commit bdefe1346a8e6b8dc8593406dc2617e985fcbcab upstream.
snd_timer_close_locked() drains the closing instance's own in-flight
callback (IFLG_CALLBACK) before freeing it, but not its slaves'. When a
master instance is closed, remove_slave_links() clears each slave's
->timer; the slave's own close then reads timer == NULL and takes the
branch that skips the drain entirely (snd_timer_stop_slave() also no-ops
on a NULL timer). So a slave whose callback is still running when the
master is closed is freed underneath the live callback, leading to
use-after-free.
Drain the slaves too before remove_slave_links() severs them.
snd_timer_stop() has already taken this instance off the active list, so
no new slave callback can be queued. Take the slaves off the ack list so
a pending one can't fire either, then wait for any that is already in
flight.
Fixes: 37745918e0e7 ("ALSA: timer: Introduce virtual userspace-driven timers")
Cc: stable@vger.kernel.org
Assisted-by: Claude:claude-opus-4-8
Signed-off-by: Norbert Szetei <norbert@doyensec.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://patch.msgid.link/D26598EB-DBF7-4D76-9F71-8E4BD59822D4@doyensec.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
sound/core/timer.c | 14 ++++++++++++--
1 file changed, 12 insertions(+), 2 deletions(-)
--- a/sound/core/timer.c
+++ b/sound/core/timer.c
@@ -437,10 +437,20 @@ static void snd_timer_close_locked(struc
snd_timer_stop(timeri);
if (timer) {
+ struct snd_timer_instance *slave;
+ bool busy;
+
timer->num_instances--;
- /* wait, until the active callback is finished */
+ /* unqueue then drain the slaves' callbacks before remove_slave_links() severs them */
spin_lock_irq(&timer->lock);
- while (timeri->flags & SNDRV_TIMER_IFLG_CALLBACK) {
+ list_for_each_entry(slave, &timeri->slave_list_head, open_list)
+ list_del_init(&slave->ack_list);
+ for (;;) {
+ busy = timeri->flags & SNDRV_TIMER_IFLG_CALLBACK;
+ list_for_each_entry(slave, &timeri->slave_list_head, open_list)
+ busy |= slave->flags & SNDRV_TIMER_IFLG_CALLBACK;
+ if (!busy)
+ break;
spin_unlock_irq(&timer->lock);
udelay(10);
spin_lock_irq(&timer->lock);
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 451/675] ALSA: timer: dont re-enter an instance callback that is still running
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (449 preceding siblings ...)
2026-07-30 14:13 ` [PATCH 6.18 450/675] ALSA: timer: drain a slaves callback before its master detaches it Greg Kroah-Hartman
@ 2026-07-30 14:13 ` Greg Kroah-Hartman
2026-07-30 14:13 ` [PATCH 6.18 452/675] wifi: ath6kl: fix OOB access from firmware ADDBA window size Greg Kroah-Hartman
` (228 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:13 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Takashi Iwai, Norbert Szetei
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Norbert Szetei <norbert@doyensec.com>
commit 70d28bfcd6224eed75986b3b987b997e59643fa4 upstream.
The userspace-driven timer (utimer) TRIGGER ioctl calls
snd_timer_interrupt() directly with no serialization, so two threads
triggering the same utimer can run snd_timer_interrupt() on one
snd_timer concurrently.
snd_timer_process_callbacks() drops timer->lock around each instance
callback and marks the in-flight callback with the single
SNDRV_TIMER_IFLG_CALLBACK bit; snd_timer_close_locked() waits on that
bit to drain an in-flight callback before freeing the instance. The bit
cannot represent two concurrent callbacks: when a second interrupt
re-queues an instance whose callback is still running, both run at once,
the first to finish clears the bit, and the close-path drain then frees
the instance (and its callback_data) while the other callback is still
live - a use-after-free reachable by any user able to open
/dev/snd/timer, both via a user timer instance and via a sequencer queue
timer bound to the utimer.
snd_timer_interrupt() sets IFLG_CALLBACK before dropping timer->lock, so
a concurrent interrupt already observes it under the lock. Skip
re-queuing an instance (and its slaves) to the ack/sack list while its
callback is in flight; the accumulated pticks are delivered on the next
tick, so no event is lost.
Fixes: 37745918e0e7 ("ALSA: timer: Introduce virtual userspace-driven timers")
Cc: stable@vger.kernel.org
Suggested-by: Takashi Iwai <tiwai@suse.de>
Assisted-by: Claude:claude-opus-4-8
Signed-off-by: Norbert Szetei <norbert@doyensec.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://patch.msgid.link/6F9B6501-8E65-4265-B02C-7EFB240D1664@doyensec.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
sound/core/timer.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
--- a/sound/core/timer.c
+++ b/sound/core/timer.c
@@ -883,12 +883,15 @@ void snd_timer_interrupt(struct snd_time
ack_list_head = &timer->ack_list_head;
else
ack_list_head = &timer->sack_list_head;
- if (list_empty(&ti->ack_list))
+ /* don't requeue an instance whose callback is still running */
+ if (list_empty(&ti->ack_list) &&
+ !(ti->flags & SNDRV_TIMER_IFLG_CALLBACK))
list_add_tail(&ti->ack_list, ack_list_head);
list_for_each_entry(ts, &ti->slave_active_head, active_list) {
ts->pticks = ti->pticks;
ts->resolution = resolution;
- if (list_empty(&ts->ack_list))
+ if (list_empty(&ts->ack_list) &&
+ !(ts->flags & SNDRV_TIMER_IFLG_CALLBACK))
list_add_tail(&ts->ack_list, ack_list_head);
}
}
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 452/675] wifi: ath6kl: fix OOB access from firmware ADDBA window size
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (450 preceding siblings ...)
2026-07-30 14:13 ` [PATCH 6.18 451/675] ALSA: timer: dont re-enter an instance callback that is still running Greg Kroah-Hartman
@ 2026-07-30 14:13 ` Greg Kroah-Hartman
2026-07-30 14:13 ` [PATCH 6.18 453/675] wifi: ath6kl: fix use-after-free in aggr_reset_state() Greg Kroah-Hartman
` (227 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:13 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Vasanthakumar Thiagarajan,
Tristan Madani, Jeff Johnson
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Tristan Madani <tristan@talencesecurity.com>
commit 44126b6994eeb28f2103b638e698f40a1244f327 upstream.
aggr_recv_addba_req_evt() logs a debug message when the firmware-supplied
win_sz is outside [AGGR_WIN_SZ_MIN, AGGR_WIN_SZ_MAX] but does not
return. The out-of-range win_sz is then used in TID_WINDOW_SZ() to
compute a kzalloc size and stored in rxtid->hold_q_sz, leading to
zero-size or overflowed allocations and subsequent out-of-bounds access.
Clean up any previously active aggregation session for the TID first,
then return early when win_sz is out of the valid range, instead of
proceeding with a broken allocation size.
Fixes: bdcd81707973 ("Add ath6kl cleaned up driver")
Cc: stable@vger.kernel.org
Reviewed-by: Vasanthakumar Thiagarajan <vasanthakumar.thiagarajan@oss.qualcomm.com>
Signed-off-by: Tristan Madani <tristan@talencesecurity.com>
Link: https://patch.msgid.link/20260702005020.708717-1-tristmd@gmail.com
Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/wireless/ath/ath6kl/txrx.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
--- a/drivers/net/wireless/ath/ath6kl/txrx.c
+++ b/drivers/net/wireless/ath/ath6kl/txrx.c
@@ -1723,13 +1723,15 @@ void aggr_recv_addba_req_evt(struct ath6
rxtid = &aggr_conn->rx_tid[tid];
- if (win_sz < AGGR_WIN_SZ_MIN || win_sz > AGGR_WIN_SZ_MAX)
- ath6kl_dbg(ATH6KL_DBG_WLAN_RX, "%s: win_sz %d, tid %d\n",
- __func__, win_sz, tid);
-
if (rxtid->aggr)
aggr_delete_tid_state(aggr_conn, tid);
+ if (win_sz < AGGR_WIN_SZ_MIN || win_sz > AGGR_WIN_SZ_MAX) {
+ ath6kl_dbg(ATH6KL_DBG_WLAN_RX, "%s: win_sz %d, tid %d\n",
+ __func__, win_sz, tid);
+ return;
+ }
+
rxtid->seq_next = seq_no;
hold_q_size = TID_WINDOW_SZ(win_sz) * sizeof(struct skb_hold_q);
rxtid->hold_q = kzalloc(hold_q_size, GFP_KERNEL);
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 453/675] wifi: ath6kl: fix use-after-free in aggr_reset_state()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (451 preceding siblings ...)
2026-07-30 14:13 ` [PATCH 6.18 452/675] wifi: ath6kl: fix OOB access from firmware ADDBA window size Greg Kroah-Hartman
@ 2026-07-30 14:13 ` Greg Kroah-Hartman
2026-07-30 14:13 ` [PATCH 6.18 454/675] wifi: mwifiex: fix NULL dereference when the AP has HT-cap but no HT-oper Greg Kroah-Hartman
` (226 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:13 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Daniel Hodges,
Vasanthakumar Thiagarajan, Jeff Johnson
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Daniel Hodges <git@danielhodges.dev>
commit ba7debb4dd6427386862220e8335a53a4bfc235d upstream.
The aggr_reset_state() function uses timer_delete() (non-synchronous)
for the aggregation timer before proceeding to delete TID state and
before the structure is freed by callers like aggr_module_destroy().
If the timer callback (aggr_timeout) is executing when aggr_reset_state()
is called, the callback will continue to access aggr_conn fields like
rx_tid[] and stat[] which may be freed immediately after by
kfree(aggr_info->aggr_conn) in aggr_module_destroy().
Additionally, the timer callback can re-arm itself via mod_timer() while
aggr_reset_state() is running, creating a more complex race condition.
Use timer_delete_sync() instead to ensure any running timer callback
has completed before returning.
Fixes: bdcd81707973 ("Add ath6kl cleaned up driver")
Cc: stable@vger.kernel.org
Signed-off-by: Daniel Hodges <git@danielhodges.dev>
Reviewed-by: Vasanthakumar Thiagarajan <vasanthakumar.thiagarajan@oss.qualcomm.com>
Link: https://patch.msgid.link/20260206185207.30098-1-git@danielhodges.dev
Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/wireless/ath/ath6kl/txrx.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/net/wireless/ath/ath6kl/txrx.c
+++ b/drivers/net/wireless/ath/ath6kl/txrx.c
@@ -1830,7 +1830,7 @@ void aggr_reset_state(struct aggr_info_c
return;
if (aggr_conn->timer_scheduled) {
- timer_delete(&aggr_conn->timer);
+ timer_delete_sync(&aggr_conn->timer);
aggr_conn->timer_scheduled = false;
}
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 454/675] wifi: mwifiex: fix NULL dereference when the AP has HT-cap but no HT-oper
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (452 preceding siblings ...)
2026-07-30 14:13 ` [PATCH 6.18 453/675] wifi: ath6kl: fix use-after-free in aggr_reset_state() Greg Kroah-Hartman
@ 2026-07-30 14:13 ` Greg Kroah-Hartman
2026-07-30 14:13 ` [PATCH 6.18 455/675] wifi: wilc1000: validate assoc response length before subtracting header Greg Kroah-Hartman
` (225 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:13 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Doruk Tan Ozturk, Francesco Dolcini,
Johannes Berg
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Doruk Tan Ozturk <doruk@0sec.ai>
commit c3d68e294cbb6a4090bb219d3dcaca85a011809b upstream.
mwifiex_tdls_add_ht_oper() gates its follow-the-AP-bandwidth path on
bss_desc->bcn_ht_cap being present, but then dereferences a different
pointer, bss_desc->bcn_ht_oper:
if (ISSUPP_CHANWIDTH40(priv->adapter->hw_dot_11n_dev_cap) &&
bss_desc->bcn_ht_cap &&
ISALLOWED_CHANWIDTH40(bss_desc->bcn_ht_oper->ht_param))
bcn_ht_cap and bcn_ht_oper are populated independently while parsing the
associated AP's beacon in mwifiex_update_bss_desc_with_ie(): an AP that
advertises an HT Capabilities element but no HT Operation element leaves
bcn_ht_cap non-NULL and bcn_ht_oper NULL. Setting up a TDLS link to a
peer while associated to such an AP then dereferences the NULL
bcn_ht_oper and crashes the kernel. Every other bcn_ht_oper user in the
driver NULL-checks it first.
Guard on the pointer that is actually dereferenced.
Found by 0sec automated security-research tooling (https://0sec.ai).
Fixes: 396939f94084 ("mwifiex: add HT operation IE in TDLS setup confirm")
Cc: stable@vger.kernel.org
Assisted-by: 0sec:multi-model
Signed-off-by: Doruk Tan Ozturk <doruk@0sec.ai>
Reviewed-by: Francesco Dolcini <francesco.dolcini@toradex.com>
Link: https://patch.msgid.link/20260716103042.88469-1-doruk@0sec.ai
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/wireless/marvell/mwifiex/tdls.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/net/wireless/marvell/mwifiex/tdls.c
+++ b/drivers/net/wireless/marvell/mwifiex/tdls.c
@@ -215,7 +215,7 @@ mwifiex_tdls_add_ht_oper(struct mwifiex_
/* follow AP's channel bandwidth */
if (ISSUPP_CHANWIDTH40(priv->adapter->hw_dot_11n_dev_cap) &&
- bss_desc->bcn_ht_cap &&
+ bss_desc->bcn_ht_oper &&
ISALLOWED_CHANWIDTH40(bss_desc->bcn_ht_oper->ht_param))
ht_oper->ht_param = bss_desc->bcn_ht_oper->ht_param;
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 455/675] wifi: wilc1000: validate assoc response length before subtracting header
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (453 preceding siblings ...)
2026-07-30 14:13 ` [PATCH 6.18 454/675] wifi: mwifiex: fix NULL dereference when the AP has HT-cap but no HT-oper Greg Kroah-Hartman
@ 2026-07-30 14:13 ` Greg Kroah-Hartman
2026-07-30 14:13 ` [PATCH 6.18 456/675] wifi: mt76: mt7615: drop TXRX_NOTIFY on non-mmio buses Greg Kroah-Hartman
` (224 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:13 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Huihui Huang, Johannes Berg
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Huihui Huang <hhhuang@smu.edu.sg>
commit 4c4c97b60a5e978121d9ee8cb0ab3916e5d6a8de upstream.
wilc_parse_assoc_resp_info() computes the trailing IE length as
ies_len = buffer_len - sizeof(*res);
without first checking that buffer_len is at least sizeof(struct
wilc_assoc_resp) (6 bytes). buffer_len is the length reported for a
received association response (host_int_parse_assoc_resp_info() passes
hif_drv->assoc_resp / assoc_resp_info_len straight in) and must be
validated before the driver accesses the fixed header.
For a frame shorter than the 6-byte fixed header, the subtraction wraps.
For a four-byte response the result is truncated to a u16 ies_len of
65534, so kmemdup() then attempts to copy 65534 bytes starting at
buffer + sizeof(*res), beyond the valid association-response data
(CWE-125). A response shorter than four bytes can also cause an
out-of-bounds read of res->status_code at offsets 2 and 3.
Reject frames too short to hold the fixed header before touching the
header or computing ies_len. Also set the connection status to a failure
on this path: the caller falls through to a
"conn_info->status == WLAN_STATUS_SUCCESS" check after the parser
returns, so leaving the status untouched could let a malformed short
response be treated as a successful association.
Fixes: c5c77ba18ea6 ("staging: wilc1000: Add SDIO/SPI 802.11 driver")
Cc: stable@vger.kernel.org
Assisted-by: Claude:claude-opus-4-8
Signed-off-by: Huihui Huang <hhhuang@smu.edu.sg>
Link: https://patch.msgid.link/20260714091811.3596126-1-hhhuang@smu.edu.sg
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/wireless/microchip/wilc1000/hif.c | 5 +++++
1 file changed, 5 insertions(+)
--- a/drivers/net/wireless/microchip/wilc1000/hif.c
+++ b/drivers/net/wireless/microchip/wilc1000/hif.c
@@ -600,6 +600,11 @@ static s32 wilc_parse_assoc_resp_info(u8
u16 ies_len;
struct wilc_assoc_resp *res = (struct wilc_assoc_resp *)buffer;
+ if (buffer_len < sizeof(*res)) {
+ ret_conn_info->status = WLAN_STATUS_UNSPECIFIED_FAILURE;
+ return -EINVAL;
+ }
+
ret_conn_info->status = le16_to_cpu(res->status_code);
if (ret_conn_info->status == WLAN_STATUS_SUCCESS) {
ies = &buffer[sizeof(*res)];
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 456/675] wifi: mt76: mt7615: drop TXRX_NOTIFY on non-mmio buses
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (454 preceding siblings ...)
2026-07-30 14:13 ` [PATCH 6.18 455/675] wifi: wilc1000: validate assoc response length before subtracting header Greg Kroah-Hartman
@ 2026-07-30 14:13 ` Greg Kroah-Hartman
2026-07-30 14:13 ` [PATCH 6.18 457/675] wifi: mt76: mt7921: " Greg Kroah-Hartman
` (223 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:13 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Devin Wittmayer, Felix Fietkau
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Devin Wittmayer <lucid_duck@justthetip.ca>
commit 39afc46c0243d10b7795e6e6cf4ae91f41732120 upstream.
PKT_TYPE_TXRX_NOTIFY is an mmio-only event, but mt7615_rx_check() and
mt7615_queue_rx_skb() dispatch it to mt7615_mac_tx_free() on every bus.
mt7615_mac_tx_free() cleans the DMA tx queues with
mt76_queue_tx_cleanup(), which calls queue_ops->tx_cleanup(). Only the
mmio queue ops implement that callback; on the mt7663 USB and SDIO
buses it is NULL, so a TXRX_NOTIFY there calls a NULL pointer in the RX
worker. Same defect as the mt7921 and mt7925 patches in this series.
Drop the event on non-mmio buses via mt76_is_mmio(), as in
commit 5683e1488aa9 ("wifi: mt76: connac: do not check WED status for
non-mmio devices").
Fixes: eb99cc95c3b6 ("mt76: mt7615: introduce mt7663u support")
Cc: stable@vger.kernel.org
Signed-off-by: Devin Wittmayer <lucid_duck@justthetip.ca>
Link: https://patch.msgid.link/20260627191336.20223-4-lucid_duck@justthetip.ca
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/wireless/mediatek/mt76/mt7615/mac.c | 6 ++++++
1 file changed, 6 insertions(+)
--- a/drivers/net/wireless/mediatek/mt76/mt7615/mac.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/mac.c
@@ -1601,6 +1601,8 @@ bool mt7615_rx_check(struct mt76_dev *md
switch (type) {
case PKT_TYPE_TXRX_NOTIFY:
+ if (!mt76_is_mmio(mdev))
+ return false;
mt7615_mac_tx_free(dev, data, len);
return false;
case PKT_TYPE_TXS:
@@ -1634,6 +1636,10 @@ void mt7615_queue_rx_skb(struct mt76_dev
dev_kfree_skb(skb);
break;
case PKT_TYPE_TXRX_NOTIFY:
+ if (!mt76_is_mmio(mdev)) {
+ dev_kfree_skb(skb);
+ break;
+ }
mt7615_mac_tx_free(dev, skb->data, skb->len);
dev_kfree_skb(skb);
break;
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 457/675] wifi: mt76: mt7921: drop TXRX_NOTIFY on non-mmio buses
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (455 preceding siblings ...)
2026-07-30 14:13 ` [PATCH 6.18 456/675] wifi: mt76: mt7615: drop TXRX_NOTIFY on non-mmio buses Greg Kroah-Hartman
@ 2026-07-30 14:13 ` Greg Kroah-Hartman
2026-07-30 14:13 ` [PATCH 6.18 458/675] wifi: mt76: mt7925: " Greg Kroah-Hartman
` (222 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:13 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Devin Wittmayer, Felix Fietkau
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Devin Wittmayer <lucid_duck@justthetip.ca>
commit da4082e91acabc1498611ed8ccc53f0610baefc6 upstream.
PKT_TYPE_TXRX_NOTIFY is an mmio-only event, but mt7921_rx_check() and
mt7921_queue_rx_skb() dispatch it to mt7921_mac_tx_free() on every bus.
mt7921_mac_tx_free() cleans the DMA tx queues with
mt76_queue_tx_cleanup(), which calls queue_ops->tx_cleanup(). Only the
mmio queue ops implement that callback; on USB and SDIO it is NULL, so
a TXRX_NOTIFY there calls a NULL pointer in the RX worker:
BUG: kernel NULL pointer dereference, address: 0000000000000000
RIP: 0010:0x0
Call Trace:
mt7921_mac_tx_free+0x64/0x310 [mt7921_common]
mt7921_rx_check+0x5f/0xf0 [mt7921_common]
mt76u_rx_worker+0x1b9/0x620 [mt76_usb]
Drop the event on non-mmio buses via mt76_is_mmio(), as in
commit 5683e1488aa9 ("wifi: mt76: connac: do not check WED status for
non-mmio devices").
Fixes: 48fab5bbef40 ("mt76: mt7921: introduce mt7921s support")
Cc: stable@vger.kernel.org
Signed-off-by: Devin Wittmayer <lucid_duck@justthetip.ca>
Link: https://patch.msgid.link/20260627191336.20223-2-lucid_duck@justthetip.ca
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/wireless/mediatek/mt76/mt7921/mac.c | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)
--- a/drivers/net/wireless/mediatek/mt76/mt7921/mac.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/mac.c
@@ -569,8 +569,9 @@ bool mt7921_rx_check(struct mt76_dev *md
switch (type) {
case PKT_TYPE_TXRX_NOTIFY:
- /* PKT_TYPE_TXRX_NOTIFY can be received only by mmio devices */
- mt7921_mac_tx_free(dev, data, len); /* mmio */
+ if (!mt76_is_mmio(mdev))
+ return false;
+ mt7921_mac_tx_free(dev, data, len);
return false;
case PKT_TYPE_TXS:
for (rxd += 2; rxd + 8 <= end; rxd += 8)
@@ -599,7 +600,10 @@ void mt7921_queue_rx_skb(struct mt76_dev
switch (type) {
case PKT_TYPE_TXRX_NOTIFY:
- /* PKT_TYPE_TXRX_NOTIFY can be received only by mmio devices */
+ if (!mt76_is_mmio(mdev)) {
+ napi_consume_skb(skb, 1);
+ break;
+ }
mt7921_mac_tx_free(dev, skb->data, skb->len);
napi_consume_skb(skb, 1);
break;
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 458/675] wifi: mt76: mt7925: drop TXRX_NOTIFY on non-mmio buses
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (456 preceding siblings ...)
2026-07-30 14:13 ` [PATCH 6.18 457/675] wifi: mt76: mt7921: " Greg Kroah-Hartman
@ 2026-07-30 14:13 ` Greg Kroah-Hartman
2026-07-30 14:13 ` [PATCH 6.18 459/675] wifi: brcmfmac: make release_scratchbuffers idempotent Greg Kroah-Hartman
` (221 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:13 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Devin Wittmayer, Felix Fietkau
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Devin Wittmayer <lucid_duck@justthetip.ca>
commit feeff151c83e7f0ffcdedcad5343852d23d1f6e1 upstream.
PKT_TYPE_TXRX_NOTIFY is an mmio-only event, but mt7925_rx_check() and
mt7925_queue_rx_skb() dispatch it to mt7925_mac_tx_free() on every bus.
mt7925_mac_tx_free() cleans the DMA tx queues with
mt76_queue_tx_cleanup(), which calls queue_ops->tx_cleanup(). Only the
mmio queue ops implement that callback; on USB it is NULL, so a
TXRX_NOTIFY there calls a NULL pointer in the RX worker:
BUG: kernel NULL pointer dereference, address: 0000000000000000
RIP: 0010:0x0
Call Trace:
mt7925_mac_tx_free+0x58/0x350 [mt7925_common]
mt7925_rx_check+0xe2/0x130 [mt7925_common]
mt76u_rx_worker+0x1b9/0x620 [mt76_usb]
Drop the event on non-mmio buses via mt76_is_mmio(), as in
commit 5683e1488aa9 ("wifi: mt76: connac: do not check WED status for
non-mmio devices").
Fixes: c948b5da6bbe ("wifi: mt76: mt7925: add Mediatek Wi-Fi7 driver for mt7925 chips")
Cc: stable@vger.kernel.org
Signed-off-by: Devin Wittmayer <lucid_duck@justthetip.ca>
Link: https://patch.msgid.link/20260627191336.20223-3-lucid_duck@justthetip.ca
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/wireless/mediatek/mt76/mt7925/mac.c | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)
--- a/drivers/net/wireless/mediatek/mt76/mt7925/mac.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7925/mac.c
@@ -1193,8 +1193,9 @@ bool mt7925_rx_check(struct mt76_dev *md
switch (type) {
case PKT_TYPE_TXRX_NOTIFY:
- /* PKT_TYPE_TXRX_NOTIFY can be received only by mmio devices */
- mt7925_mac_tx_free(dev, data, len); /* mmio */
+ if (!mt76_is_mmio(mdev))
+ return false;
+ mt7925_mac_tx_free(dev, data, len);
return false;
case PKT_TYPE_TXS:
for (rxd += 4; rxd + 12 <= end; rxd += 12)
@@ -1230,7 +1231,10 @@ void mt7925_queue_rx_skb(struct mt76_dev
switch (type) {
case PKT_TYPE_TXRX_NOTIFY:
- /* PKT_TYPE_TXRX_NOTIFY can be received only by mmio devices */
+ if (!mt76_is_mmio(mdev)) {
+ napi_consume_skb(skb, 1);
+ break;
+ }
mt7925_mac_tx_free(dev, skb->data, skb->len);
napi_consume_skb(skb, 1);
break;
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 459/675] wifi: brcmfmac: make release_scratchbuffers idempotent
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (457 preceding siblings ...)
2026-07-30 14:13 ` [PATCH 6.18 458/675] wifi: mt76: mt7925: " Greg Kroah-Hartman
@ 2026-07-30 14:13 ` Greg Kroah-Hartman
2026-07-30 14:13 ` [PATCH 6.18 460/675] wifi: brcmfmac: set F2 blocksize to 256 for BCM43752 Greg Kroah-Hartman
` (220 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:13 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Fan Wu, Arend van Spriel,
Johannes Berg
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Fan Wu <fanwu01@zju.edu.cn>
commit 538c51e9d124cf656f2dd0c0394a8545efc7102d upstream.
brcmf_pcie_release_scratchbuffers() frees the shared.scratch and
shared.ringupd DMA buffers with dma_free_coherent() but does not clear
the pointers afterwards, unlike the sibling release_ringbuffers() which
NULLs commonrings/flowrings/idxbuf on release.
Both the bus_reset .reset callback (brcmf_pcie_reset) and
brcmf_pcie_remove() call release_scratchbuffers. When reset teardown
has run before removal, remove's own teardown would call
dma_free_coherent() a second time on the already-freed DMA allocation.
NULL the pointers after free, matching release_ringbuffers(), so a later
release observes that the allocation has already been released. This
patch makes repeated sequential release safe; the reset-work lifetime is
handled separately by the following patch.
This issue was found by an in-house static analysis tool.
Fixes: 4684997d9eea ("brcmfmac: reset PCIe bus on a firmware crash")
Cc: stable@vger.kernel.org
Signed-off-by: Fan Wu <fanwu01@zju.edu.cn>
Assisted-by: Codex:gpt-5.6
Acked-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Link: https://patch.msgid.link/20260718024353.3147201-2-fanwu01@zju.edu.cn
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c
@@ -1383,16 +1383,20 @@ fail:
static void
brcmf_pcie_release_scratchbuffers(struct brcmf_pciedev_info *devinfo)
{
- if (devinfo->shared.scratch)
+ if (devinfo->shared.scratch) {
dma_free_coherent(&devinfo->pdev->dev,
BRCMF_DMA_D2H_SCRATCH_BUF_LEN,
devinfo->shared.scratch,
devinfo->shared.scratch_dmahandle);
- if (devinfo->shared.ringupd)
+ devinfo->shared.scratch = NULL;
+ }
+ if (devinfo->shared.ringupd) {
dma_free_coherent(&devinfo->pdev->dev,
BRCMF_DMA_D2H_RINGUPD_BUF_LEN,
devinfo->shared.ringupd,
devinfo->shared.ringupd_dmahandle);
+ devinfo->shared.ringupd = NULL;
+ }
}
static int brcmf_pcie_init_scratchbuffers(struct brcmf_pciedev_info *devinfo)
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 460/675] wifi: brcmfmac: set F2 blocksize to 256 for BCM43752
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (458 preceding siblings ...)
2026-07-30 14:13 ` [PATCH 6.18 459/675] wifi: brcmfmac: make release_scratchbuffers idempotent Greg Kroah-Hartman
@ 2026-07-30 14:13 ` Greg Kroah-Hartman
2026-07-30 14:13 ` [PATCH 6.18 461/675] wifi: ath11k: fix refcount leak in ath11k_ahb_fw_resources_init() Greg Kroah-Hartman
` (219 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:13 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, LiangCheng Wang, Arend van Spriel,
Johannes Berg
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: LiangCheng Wang <zaq14760@gmail.com>
commit 29ab31f3f27157648f2f7e6d5e1fd9792fdf0614 upstream.
The BCM43752 is not reliable with the default 512-byte SDIO function 2
block size: on an i.MX8MP board with an AMPAK AP6275S module at
SDR104 / 200 MHz, an iperf TX stress test kills WLAN within seconds:
mmc_submit_one: CMD53 sg block write failed -84
brcmf_sdio_dpc: failed backplane access over SDIO, halting operation
Commit d2587c57ffd8 ("brcmfmac: add 43752 SDIO ids and initialization")
set up the 43752 like the 4373 for the F2 watermark but missed the F2
block size, which the 4373 limits to 256 bytes. The vendor driver
(bcmdhd) also programs a 256-byte F2 block size for this chip and runs
the same hardware without errors.
Group the 43752 with the 4373, matching the F2 watermark handling.
With this change a 10-minute bidirectional iperf3 soak completes with
zero SDIO errors at ~270 Mbit/s in each direction.
Backporting note: kernels before v6.18 name this id
SDIO_DEVICE_ID_BROADCOM_CYPRESS_43752, so on those trees the case
label added by this patch must be adjusted to that name. Cherry-picking
the rename commit 74e2ef72bd4b ("wifi: brcmfmac: fix 43752 SDIO FWVID
incorrectly labelled as Cypress (CYW)") first is not a clean
alternative: on trees before v6.17 its context collides with the 43751
additions, and trees before v6.2 lack the FWVID framework it touches.
Fixes: d2587c57ffd8 ("brcmfmac: add 43752 SDIO ids and initialization")
Cc: stable@vger.kernel.org # see patch description, needs adjustments for <= 6.17
Signed-off-by: LiangCheng Wang <zaq14760@gmail.com>
Acked-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Link: https://patch.msgid.link/20260715-b43752-f2-blksz-v2-1-f9be49856050@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c
@@ -911,6 +911,7 @@ int brcmf_sdiod_probe(struct brcmf_sdio_
return ret;
}
switch (sdiodev->func2->device) {
+ case SDIO_DEVICE_ID_BROADCOM_43752:
case SDIO_DEVICE_ID_BROADCOM_CYPRESS_4373:
f2_blksz = SDIO_4373_FUNC2_BLOCKSIZE;
break;
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 461/675] wifi: ath11k: fix refcount leak in ath11k_ahb_fw_resources_init()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (459 preceding siblings ...)
2026-07-30 14:13 ` [PATCH 6.18 460/675] wifi: brcmfmac: set F2 blocksize to 256 for BCM43752 Greg Kroah-Hartman
@ 2026-07-30 14:13 ` Greg Kroah-Hartman
2026-07-30 14:13 ` [PATCH 6.18 462/675] staging: rtl8723bs: fix OOB reads in rtw_get_wps_ie() Greg Kroah-Hartman
` (218 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:13 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Wentao Liang, Baochen Qiang,
Rameshkumar Sundaram, Jeff Johnson
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Wentao Liang <vulab@iscas.ac.cn>
commit 0e120ee0822b7cc650bd7b29682a34e137cec10d upstream.
of_get_child_by_name() returns a node pointer with refcount
incremented, but the error path when ath11k_ahb_setup_msa_resources()
fails does not release it. Add the missing of_node_put() to avoid
leaking the reference.
Cc: stable@vger.kernel.org
Fixes: 095cb947490c ("wifi: ath11k: allow missing memory-regions")
Signed-off-by: Wentao Liang <vulab@iscas.ac.cn>
Reviewed-by: Baochen Qiang <baochen.qiang@oss.qualcomm.com>
Reviewed-by: Rameshkumar Sundaram <rameshkumar.sundaram@oss.qualcomm.com>
Link: https://patch.msgid.link/20260609092528.220547-1-vulab@iscas.ac.cn
Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/wireless/ath/ath11k/ahb.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/net/wireless/ath/ath11k/ahb.c
+++ b/drivers/net/wireless/ath/ath11k/ahb.c
@@ -998,6 +998,7 @@ static int ath11k_ahb_fw_resources_init(
ret = ath11k_ahb_setup_msa_resources(ab);
if (ret) {
ath11k_err(ab, "failed to setup msa resources\n");
+ of_node_put(node);
return ret;
}
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 462/675] staging: rtl8723bs: fix OOB reads in rtw_get_wps_ie()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (460 preceding siblings ...)
2026-07-30 14:13 ` [PATCH 6.18 461/675] wifi: ath11k: fix refcount leak in ath11k_ahb_fw_resources_init() Greg Kroah-Hartman
@ 2026-07-30 14:13 ` Greg Kroah-Hartman
2026-07-30 14:13 ` [PATCH 6.18 463/675] staging: rtl8723bs: fix inverted HT40 secondary channel offset Greg Kroah-Hartman
` (217 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:13 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, stable, Moksh Panicker
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Moksh Panicker <mokshpanicker.7@gmail.com>
commit 0e95ff792ae0aa6fbad9455943e9e1e4062670e9 upstream.
rtw_get_wps_ie() iterates over IE data from network frames without
validating that the IE header and payload fit within the remaining
buffer before reading them. Specifically:
- in_ie[cnt + 1] is read without checking cnt + 1 < in_len
- memcmp(&in_ie[cnt + 2], ...) accesses cnt + 2 without bounds check
- in_ie[cnt + 1] is used as length without verifying payload fits
Add bounds checks at the top of the loop body to break early if fewer
than 2 bytes remain for the IE header, or if the declared payload
extends past the end of the buffer. Also require at least 4 bytes of
payload before comparing the WPS OUI.
Fixes: 554c0a3abf21 ("staging: Add rtl8723bs sdio wifi driver")
Cc: stable <stable@kernel.org>
Signed-off-by: Moksh Panicker <mokshpanicker.7@gmail.com>
Link: https://patch.msgid.link/20260625202911.26782-1-mokshpanicker.7@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/staging/rtl8723bs/core/rtw_ieee80211.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
--- a/drivers/staging/rtl8723bs/core/rtw_ieee80211.c
+++ b/drivers/staging/rtl8723bs/core/rtw_ieee80211.c
@@ -679,7 +679,14 @@ u8 *rtw_get_wps_ie(u8 *in_ie, uint in_le
while (cnt < in_len) {
eid = in_ie[cnt];
- if ((eid == WLAN_EID_VENDOR_SPECIFIC) && (!memcmp(&in_ie[cnt + 2], wps_oui, 4))) {
+ if (cnt + 2 > in_len)
+ break;
+
+ if (in_ie[cnt + 1] + 2 > in_len - cnt)
+ break;
+
+ if ((eid == WLAN_EID_VENDOR_SPECIFIC) && (in_ie[cnt + 1] >= 4) &&
+ (!memcmp(&in_ie[cnt + 2], wps_oui, 4))) {
wpsie_ptr = &in_ie[cnt];
if (wps_ie)
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 463/675] staging: rtl8723bs: fix inverted HT40 secondary channel offset
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (461 preceding siblings ...)
2026-07-30 14:13 ` [PATCH 6.18 462/675] staging: rtl8723bs: fix OOB reads in rtw_get_wps_ie() Greg Kroah-Hartman
@ 2026-07-30 14:13 ` Greg Kroah-Hartman
2026-07-30 14:13 ` [PATCH 6.18 464/675] Bluetooth: hci_sync: Protect UUID list traversal Greg Kroah-Hartman
` (216 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:13 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, MinJea Kim
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: MinJea Kim <qndkdrnl@gmail.com>
commit 30d49cba27f8905bc288cef5846963f0004f644c upstream.
rtw_get_chan_type() maps the driver's channel offset to nl80211 channel
types the wrong way around.
In this driver HAL_PRIME_CHNL_OFFSET_LOWER means the primary channel is
the lower 20 MHz half of the 40 MHz pair, i.e. the secondary channel is
above the primary one: rtw_get_center_ch() computes the center channel
as "channel + 2" for OFFSET_LOWER, and bwmode_update_check() sets
OFFSET_LOWER when the AP's HT operation IE announces SCA (secondary
channel above). In nl80211 terms that is NL80211_CHAN_HT40PLUS, not
HT40MINUS.
Because of the inversion, cfg80211_rtw_get_channel() reports an HT40+
association as HT40-. For an HT40+ AP on a low channel (e.g. channel 3)
the resulting chandef spans below the 2.4 GHz band edge and is invalid,
so the regulatory core tears the connection down 60 seconds
(REG_ENFORCE_GRACE_MS) after the AP's country IE triggers a regdomain
change: reg_check_chans_work() considers the reported chandef unusable
and calls cfg80211_leave(). The supplicant then reconnects, the country
IE changes the regdomain again, and the cycle repeats, causing a
disconnect/reconnect loop every ~65 seconds for as long as the link is
up.
Observed on a TECLAST X80 Power tablet (RTL8723BS) associated to an
HT40+ AP on channel 3 with a KR country IE; a kprobe trace showed
cfg80211_disconnect() being invoked from reg_check_chans_work(). With
the mapping fixed, "iw dev wlan0 info" reports the correct
"width: 40 MHz, center1: 2432 MHz" and the periodic disconnects stop.
Fixes: 5402cc178c5d ("staging: rtl8723bs: add get_channel cfg80211 implementation")
Cc: stable@vger.kernel.org
Assisted-by: Claude-Code:claude-fable-5 bpftrace
Signed-off-by: MinJea Kim <qndkdrnl@gmail.com>
Link: https://patch.msgid.link/20260714131421.3980-1-qndkdrnl@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/staging/rtl8723bs/os_dep/ioctl_cfg80211.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/staging/rtl8723bs/os_dep/ioctl_cfg80211.c
+++ b/drivers/staging/rtl8723bs/os_dep/ioctl_cfg80211.c
@@ -1958,7 +1958,7 @@ static u8 rtw_get_chan_type(struct adapt
else
return NL80211_CHAN_NO_HT;
case CHANNEL_WIDTH_40:
- if (mlme_ext->cur_ch_offset == HAL_PRIME_CHNL_OFFSET_UPPER)
+ if (mlme_ext->cur_ch_offset == HAL_PRIME_CHNL_OFFSET_LOWER)
return NL80211_CHAN_HT40PLUS;
else
return NL80211_CHAN_HT40MINUS;
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 464/675] Bluetooth: hci_sync: Protect UUID list traversal
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (462 preceding siblings ...)
2026-07-30 14:13 ` [PATCH 6.18 463/675] staging: rtl8723bs: fix inverted HT40 secondary channel offset Greg Kroah-Hartman
@ 2026-07-30 14:13 ` Greg Kroah-Hartman
2026-07-30 14:13 ` [PATCH 6.18 465/675] Bluetooth: RFCOMM: Fix session UAF in set_termios Greg Kroah-Hartman
` (215 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:13 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Chengfeng Ye, Luiz Augusto von Dentz
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Chengfeng Ye <nicoyip.dev@gmail.com>
commit e9027ffbf5a0f3c12ca8900822e884eae9f0821b upstream.
The hci_sync conversion moved class-of-device and EIR generation from an
HCI request built under hdev->lock to asynchronous command sync work.
The worker holds hdev->req_lock, but that lock does not serialize access
to hdev->uuids against add_uuid() and remove_uuid(), which update the
list under hdev->lock.
The following interleaving can therefore occur:
CPU0 (command sync work) CPU1 (management socket)
fetch uuid from the list
list_del(&uuid->list)
kfree(uuid)
read uuid->size
KASAN reports the resulting use-after-free:
BUG: KASAN: slab-use-after-free in eir_create+0xb8f/0xee0
Read of size 1 at addr ffff88810dbd8620 by task kworker/u17:0/87
Workqueue: hci0 hci_cmd_sync_work
Call Trace:
eir_create+0xb8f/0xee0
hci_update_eir_sync+0x1c0/0x330
hci_cmd_sync_work+0x13c/0x290
process_one_work+0x63a/0x1070
worker_thread+0x45b/0xd10
Allocated by task 86:
__kasan_kmalloc+0x8f/0xa0
add_uuid+0x18a/0x4b0
hci_sock_sendmsg+0x1033/0x1ea0
Freed by task 92:
__kasan_slab_free+0x43/0x70
kfree+0x131/0x3c0
remove_uuid+0x25e/0x560
hci_sock_sendmsg+0x1033/0x1ea0
Hold hdev->lock while generating and committing the class-of-device and
EIR snapshots. Release it before sending an HCI command, so controller
waits do not happen under the device lock. This protects all UUID list
walks in these paths and restores the serialization lost in the command
sync conversion.
Fixes: 161510ccf91c ("Bluetooth: hci_sync: Make use of hci_cmd_sync_queue set 1")
Cc: stable@vger.kernel.org
Signed-off-by: Chengfeng Ye <nicoyip.dev@gmail.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/bluetooth/hci_sync.c | 13 +++++++++++--
1 file changed, 11 insertions(+), 2 deletions(-)
--- a/net/bluetooth/hci_sync.c
+++ b/net/bluetooth/hci_sync.c
@@ -929,12 +929,16 @@ int hci_update_eir_sync(struct hci_dev *
memset(&cp, 0, sizeof(cp));
+ hci_dev_lock(hdev);
eir_create(hdev, cp.data);
- if (memcmp(cp.data, hdev->eir, sizeof(cp.data)) == 0)
+ if (memcmp(cp.data, hdev->eir, sizeof(cp.data)) == 0) {
+ hci_dev_unlock(hdev);
return 0;
+ }
memcpy(hdev->eir, cp.data, sizeof(cp.data));
+ hci_dev_unlock(hdev);
return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_EIR, sizeof(cp), &cp,
HCI_CMD_TIMEOUT);
@@ -966,6 +970,7 @@ int hci_update_class_sync(struct hci_dev
if (hci_dev_test_flag(hdev, HCI_SERVICE_CACHE))
return 0;
+ hci_dev_lock(hdev);
cod[0] = hdev->minor_class;
cod[1] = hdev->major_class;
cod[2] = get_service_classes(hdev);
@@ -973,8 +978,12 @@ int hci_update_class_sync(struct hci_dev
if (hci_dev_test_flag(hdev, HCI_LIMITED_DISCOVERABLE))
cod[1] |= 0x20;
- if (memcmp(cod, hdev->dev_class, 3) == 0)
+ if (memcmp(cod, hdev->dev_class, 3) == 0) {
+ hci_dev_unlock(hdev);
return 0;
+ }
+
+ hci_dev_unlock(hdev);
return __hci_cmd_sync_status(hdev, HCI_OP_WRITE_CLASS_OF_DEV,
sizeof(cod), cod, HCI_CMD_TIMEOUT);
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 465/675] Bluetooth: RFCOMM: Fix session UAF in set_termios
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (463 preceding siblings ...)
2026-07-30 14:13 ` [PATCH 6.18 464/675] Bluetooth: hci_sync: Protect UUID list traversal Greg Kroah-Hartman
@ 2026-07-30 14:13 ` Greg Kroah-Hartman
2026-07-30 14:13 ` [PATCH 6.18 466/675] exec: fix unsigned loop counter wrap in transfer_args_to_stack() Greg Kroah-Hartman
` (214 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:13 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Chengfeng Ye, Luiz Augusto von Dentz
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Chengfeng Ye <nicoyip.dev@gmail.com>
commit c783399efc22d035443f1dfbf2a09bf9562aaa5e upstream.
rfcomm_tty_set_termios() tests dlc->session without rfcomm_mutex and
later passes the pointer to rfcomm_send_rpn(). The latter dereferences
both session->initiator and session->sock. Meanwhile, krfcommd can
unlink the DLC and free the session while holding rfcomm_mutex.
The race can proceed as follows:
TTY ioctl task krfcommd
-------------- --------
load dlc->session
enter rfcomm_send_rpn()
lock rfcomm_mutex
clear dlc->session
free session
unlock rfcomm_mutex
read session->initiator
KASAN reported:
BUG: KASAN: slab-use-after-free in rfcomm_send_rpn+0x297/0x2a0
Read of size 4 at addr ffff88810012a850 by task poc/92
Call Trace:
rfcomm_send_rpn+0x297/0x2a0
rfcomm_tty_set_termios+0x50d/0x850
tty_set_termios+0x596/0x950
set_termios+0x46a/0x6e0
tty_mode_ioctl+0x152/0xbd0
tty_ioctl+0x915/0x1240
__x64_sys_ioctl+0x134/0x1c0
Allocated by task 92:
rfcomm_session_add+0x9e/0x2e0
rfcomm_dlc_open+0x8b1/0xe00
rfcomm_dev_activate+0x85/0x1a0
rfcomm_tty_open+0x90/0x280
Freed by task 68:
kfree+0x131/0x3c0
rfcomm_session_del+0x119/0x180
rfcomm_run+0x737/0x4710
Add rfcomm_dlc_send_rpn(), which holds rfcomm_mutex while it verifies
that the DLC is still attached and sends the RPN frame. Have the TTY
path use the helper and drop its unlocked session check. This keeps the
session valid through both the frame construction and socket send.
Fixes: 3a5e903c09ae ("[Bluetooth]: Implement RFCOMM remote port negotiation")
Cc: stable@vger.kernel.org
Signed-off-by: Chengfeng Ye <nicoyip.dev@gmail.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
include/net/bluetooth/rfcomm.h | 3 +++
net/bluetooth/rfcomm/core.c | 17 +++++++++++++++++
net/bluetooth/rfcomm/tty.c | 7 +++----
3 files changed, 23 insertions(+), 4 deletions(-)
--- a/include/net/bluetooth/rfcomm.h
+++ b/include/net/bluetooth/rfcomm.h
@@ -229,6 +229,9 @@ int rfcomm_send_rpn(struct rfcomm_sessio
u8 bit_rate, u8 data_bits, u8 stop_bits,
u8 parity, u8 flow_ctrl_settings,
u8 xon_char, u8 xoff_char, u16 param_mask);
+int rfcomm_dlc_send_rpn(struct rfcomm_dlc *d, u8 bit_rate, u8 data_bits,
+ u8 stop_bits, u8 parity, u8 flow_ctrl_settings,
+ u8 xon_char, u8 xoff_char, u16 param_mask);
/* ---- RFCOMM DLCs (channels) ---- */
struct rfcomm_dlc *rfcomm_dlc_alloc(gfp_t prio);
--- a/net/bluetooth/rfcomm/core.c
+++ b/net/bluetooth/rfcomm/core.c
@@ -1031,6 +1031,23 @@ int rfcomm_send_rpn(struct rfcomm_sessio
return rfcomm_send_frame(s, buf, ptr - buf);
}
+int rfcomm_dlc_send_rpn(struct rfcomm_dlc *d, u8 bit_rate, u8 data_bits,
+ u8 stop_bits, u8 parity, u8 flow_ctrl_settings,
+ u8 xon_char, u8 xoff_char, u16 param_mask)
+{
+ int err = -ENOTCONN;
+
+ rfcomm_lock();
+ if (d->session)
+ err = rfcomm_send_rpn(d->session, 1, d->dlci, bit_rate,
+ data_bits, stop_bits, parity,
+ flow_ctrl_settings, xon_char, xoff_char,
+ param_mask);
+ rfcomm_unlock();
+
+ return err;
+}
+
static int rfcomm_send_rls(struct rfcomm_session *s, int cr, u8 dlci, u8 status)
{
struct rfcomm_hdr *hdr;
--- a/net/bluetooth/rfcomm/tty.c
+++ b/net/bluetooth/rfcomm/tty.c
@@ -861,7 +861,7 @@ static void rfcomm_tty_set_termios(struc
BT_DBG("tty %p termios %p", tty, old);
- if (!dev || !dev->dlc || !dev->dlc->session)
+ if (!dev || !dev->dlc)
return;
/* Handle turning off CRTSCTS */
@@ -982,9 +982,8 @@ static void rfcomm_tty_set_termios(struc
}
if (changes)
- rfcomm_send_rpn(dev->dlc->session, 1, dev->dlc->dlci, baud,
- data_bits, stop_bits, parity,
- RFCOMM_RPN_FLOW_NONE, x_on, x_off, changes);
+ rfcomm_dlc_send_rpn(dev->dlc, baud, data_bits, stop_bits, parity,
+ RFCOMM_RPN_FLOW_NONE, x_on, x_off, changes);
}
static void rfcomm_tty_throttle(struct tty_struct *tty)
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 466/675] exec: fix unsigned loop counter wrap in transfer_args_to_stack()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (464 preceding siblings ...)
2026-07-30 14:13 ` [PATCH 6.18 465/675] Bluetooth: RFCOMM: Fix session UAF in set_termios Greg Kroah-Hartman
@ 2026-07-30 14:13 ` Greg Kroah-Hartman
2026-07-30 14:13 ` [PATCH 6.18 467/675] binfmt_misc: set have_execfd only once the interpreter is opened Greg Kroah-Hartman
` (213 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:13 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, David Hildenbrand (Arm),
Christian Brauner (Amutable)
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Christian Brauner <brauner@kernel.org>
commit 16cc4f5c1c4b9e45eca7f7deefa5410a292db599 upstream.
The stop value is derived from bprm->p >> PAGE_SHIFT. The index variable
is an unsigned long. If bprm->p drops below PAGE_SIZE and stop becomes
zero the loop condition index >= stop is always true.
After the index == 0 iteration the decrement wraps to ULONG_MAX and
bprm->page[ULONG_MAX] reads sizeof(void *) bytes in front of the array.
The pointer has wrapped to -1. That garbage pointer is then passed to
kmap_local_page() and PAGE_SIZE bytes are copied from wherever that
lands into the stack of the process being created. And the loop doesn't
terminate either...
Getting there only requires bprm->p < PAGE_SIZE. On !MMU
bprm_set_stack_limit() and bprm_hit_stack_limit() are empty. So the only
constraint on how far bprm->p is pushed down is valid_arg_len(), i.e.
that each individual string still fits in what is left.
bprm->p starts at PAGE_SIZE * MAX_ARG_PAGES - sizeof(void *) so a
single argument or environment string of a little over 31 pages leaves
it in the first page:
Oops - load access fault [#1]
CPU: 0 UID: 0 PID: 1 Comm: victim Not tainted 7.2.0-rc4 #1
epc : __memcpy+0xd4/0xf8
ra : transfer_args_to_stack+0xaa/0xae
s4 : ffffffffffffffff s2 : 0000000000000000
a1 : ffffffdc98000000 a2 : 0000000000001000
status: 0000000a00001880 badaddr: ffffffdc98000000 cause: 0000000000000005
[<801a5324>] __memcpy+0xd4/0xf8
[<800d5f6a>] load_flat_binary+0x43a/0x65e
[<800a2de4>] bprm_execve+0x1d4/0x316
[<800a351a>] do_execveat_common+0x12e/0x138
[<800a3d44>] __riscv_sys_execve+0x38/0x4e
Kernel panic - not syncing: Fatal exception in interrupt
This is an arcane bug but we should still fix it.
Count down from MAX_ARG_PAGES so the loop ends when index reaches stop,
stop == 0 included. The iterations performed are unchanged for every
other value of stop.
Only CONFIG_MMU=n builds are affected, transfer_args_to_stack() is used
by binfmt_flat and binfmt_elf_fdpic on nommu only.
The loop predates git history. commit 7e7ec6a93434
("elf_fdpic_transfer_args_to_stack(): make it generic") only moved it
from binfmt_elf_fdpic.c into fs/exec.c and narrowed the copy to the used
part of the first page. The condition and the decrement are unchanged
from 2.6.12-rc2.
Link: https://patch.msgid.link/20260721-hochachtung-staumauer-pigmente-15d71f7d7d04@brauner
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Cc: stable@vger.kernel.org
Reviewed-by: David Hildenbrand (Arm) <david@kernel.org>
Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/exec.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -736,7 +736,7 @@ int transfer_args_to_stack(struct linux_
stop = bprm->p >> PAGE_SHIFT;
sp = *sp_location;
- for (index = MAX_ARG_PAGES - 1; index >= stop; index--) {
+ for (index = MAX_ARG_PAGES; index-- > stop; ) {
unsigned int offset = index == stop ? bprm->p & ~PAGE_MASK : 0;
char *src = kmap_local_page(bprm->page[index]) + offset;
sp -= PAGE_SIZE - offset;
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 467/675] binfmt_misc: set have_execfd only once the interpreter is opened
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (465 preceding siblings ...)
2026-07-30 14:13 ` [PATCH 6.18 466/675] exec: fix unsigned loop counter wrap in transfer_args_to_stack() Greg Kroah-Hartman
@ 2026-07-30 14:13 ` Greg Kroah-Hartman
2026-07-30 14:13 ` [PATCH 6.18 468/675] platform/loongarch: laptop: Explicitly reset bl_powered state when suspend Greg Kroah-Hartman
` (212 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:13 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Christian Brauner (Amutable)
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Christian Brauner <brauner@kernel.org>
commit bbf5f639918dc011aaf60aab8480218758ee68c5 upstream.
load_misc_binary() raises bprm->have_execfd as soon as it sees the 'O'
(or 'C') flag. This happens well before it opens the interpreter. If
that open fails the flag stays set on the bprm. binfmt_misc is at the
head of the format list so an interpreter open failure that returns
-ENOEXEC lets the search fall through to a later format. This means it
runs the matched binary directly having never staged an interpreter. So
bprm->executable is NULL while have_execfd falsely claims a descriptor
is present.
Consequently, begin_new_exec() dereferences the missing executable:
would_dump(bprm, bprm->executable);
and NULL derefs. Had it not, the hand-off later in the same function
would have failed anyway. FD_ADD(0, bprm->executable) rejects a NULL
file with -ENOMEM. Both sites are past the point of no return so the
exec cannot be unwound either way.
This can be reached by unprivileged users as binfmt_misc can be mounted
in user namespaces. So a user can register an 'O' entry whose
interpreter lives on a FUSE mount, have the FUSE server fail the open
with -ENOEXEC and execute a native ELF file that matches the entry.
have_execfd only means anything alongside the executable it describes
which is not set until the interpreter has been opened and staged.
So lets raise it there, next to execfd_creds, which is already set at
that point. An open failure now leaves it clear, so the fallback format
derives credentials from the binary and emits no AT_EXECFD, as it would
for any native exec. The argv rewrite load_misc_binary() performs before
the open is still not undone. This means the binary sees the interpreter
path in argv[0] and its own path in argv[1] but that predates this
change and only became observable once the exec stopped faulting.
Link: https://patch.msgid.link/20260720-beglichen-kognitiv-organismus-5e1e55326c56@brauner
Fixes: bc2bf338d54b ("exec: Remove recursion from search_binary_handler")
Cc: stable@vger.kernel.org
Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/binfmt_misc.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
--- a/fs/binfmt_misc.c
+++ b/fs/binfmt_misc.c
@@ -227,9 +227,6 @@ static int load_misc_binary(struct linux
goto ret;
}
- if (fmt->flags & MISC_FMT_OPEN_BINARY)
- bprm->have_execfd = 1;
-
/* make argv[1] be the path to the binary */
retval = copy_string_kernel(bprm->interp, bprm);
if (retval < 0)
@@ -259,6 +256,8 @@ static int load_misc_binary(struct linux
goto ret;
bprm->interpreter = interp_file;
+ if (fmt->flags & MISC_FMT_OPEN_BINARY)
+ bprm->have_execfd = 1;
if (fmt->flags & MISC_FMT_CREDENTIALS)
bprm->execfd_creds = 1;
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 468/675] platform/loongarch: laptop: Explicitly reset bl_powered state when suspend
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (466 preceding siblings ...)
2026-07-30 14:13 ` [PATCH 6.18 467/675] binfmt_misc: set have_execfd only once the interpreter is opened Greg Kroah-Hartman
@ 2026-07-30 14:13 ` Greg Kroah-Hartman
2026-07-30 14:13 ` [PATCH 6.18 469/675] rust_binder: only print failure if error has source Greg Kroah-Hartman
` (211 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:13 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Yao Zi, Xi Ruoyao, Zixing Liu,
Huacai Chen
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Zixing Liu <liushuyu@aosc.io>
commit 91a70492c03040d51b36f595530d6491d5d6c541 upstream.
On EAECIS NL60R with EC firmware version 1.11, resuming from S3 has a
very high chance (>90%) of causing the EC to lose the previous backlight
power state. When this happens, the laptop resumes normally from S3, but
the backlight remains off (when shining on the screen with a flash light,
we can see the screen contents are updating normally).
Since there is no generic way to query the EC's backlight state on
Loongson laptop platforms, assume the worst-case scenario and restart
the backlight power inside the kernel each time the system resumes.
Cc: stable@vger.kernel.org
Fixes: 53c762b47f72 ("platform/loongarch: laptop: Add backlight power control support")
Tested-by: Yao Zi <me@ziyao.cc>
Tested-by: Xi Ruoyao <xry111@xry111.site>
Signed-off-by: Zixing Liu <liushuyu@aosc.io>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/platform/loongarch/loongson-laptop.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/platform/loongarch/loongson-laptop.c
+++ b/drivers/platform/loongarch/loongson-laptop.c
@@ -189,6 +189,7 @@ static int __init setup_acpi_notify(stru
static int loongson_hotkey_suspend(struct device *dev)
{
+ bl_powered = false;
return 0;
}
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 469/675] rust_binder: only print failure if error has source
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (467 preceding siblings ...)
2026-07-30 14:13 ` [PATCH 6.18 468/675] platform/loongarch: laptop: Explicitly reset bl_powered state when suspend Greg Kroah-Hartman
@ 2026-07-30 14:13 ` Greg Kroah-Hartman
2026-07-30 14:13 ` [PATCH 6.18 470/675] rust: time: fix as_micros_ceil() to round correctly for negative Delta Greg Kroah-Hartman
` (210 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:13 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, stable, Alice Ryhl
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Alice Ryhl <aliceryhl@google.com>
commit bb66b1a3452534adb8b72abf2f761375970fe472 upstream.
The commit that fixes BINDER_GET_EXTENDED_ERROR changed the condition
for printing transaction failures so errors are printed even if the
cause is a dead or frozen process. Undo this change so that the error
is only printed if the failure has an errno associated with it.
Cc: stable@kernel.org
Fixes: 77bfebf11077 ("rust_binder: fix BINDER_GET_EXTENDED_ERROR")
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Link: https://patch.msgid.link/20260708-get-extended-error-fix-printing-v1-1-6e293b213b70@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/android/binder/thread.rs | 14 +++++++-------
1 file changed, 7 insertions(+), 7 deletions(-)
--- a/drivers/android/binder/thread.rs
+++ b/drivers/android/binder/thread.rs
@@ -1268,14 +1268,14 @@ impl Thread {
inner.extended_error =
ExtendedError::new(info.debug_id as u32, err.reply, source.to_errno());
}
- }
- pr_warn!(
- "{}:{} transaction to {} failed: {err:?}",
- info.from_pid,
- info.from_tid,
- info.to_pid
- );
+ pr_warn!(
+ "{}:{} transaction to {} failed: {err:?}",
+ info.from_pid,
+ info.from_tid,
+ info.to_pid
+ );
+ }
}
}
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 470/675] rust: time: fix as_micros_ceil() to round correctly for negative Delta
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (468 preceding siblings ...)
2026-07-30 14:13 ` [PATCH 6.18 469/675] rust_binder: only print failure if error has source Greg Kroah-Hartman
@ 2026-07-30 14:13 ` Greg Kroah-Hartman
2026-07-30 14:13 ` [PATCH 6.18 471/675] rust: allow `clippy::unwrap_or_default` globally Greg Kroah-Hartman
` (209 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:13 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, FUJITA Tomonori, Andreas Hindborg,
Miguel Ojeda
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: FUJITA Tomonori <fujita.tomonori@gmail.com>
commit 880c43b185ca52239e75bc546cc4f4d9154d0fed upstream.
The ceiling-division idiom `(n + d - 1) / d` only produces the
correct result when `n` is non-negative.
For example, if n = -1000 (exactly -1us), the old code computed (-1000
+ 999) / 1000 == 0 instead of -1.
For negative n, truncating division already rounds towards positive
infinity, so no bias is needed in that case.
Fixes: fae0cdc12340 ("rust: time: Introduce Delta type")
Signed-off-by: FUJITA Tomonori <fujita.tomonori@gmail.com>
Acked-by: Andreas Hindborg <a.hindborg@kernel.org>
Cc: stable@vger.kernel.org
Link: https://patch.msgid.link/20260713225235.3243480-1-tomo@flapping.org
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
rust/kernel/time.rs | 11 +++++++++--
1 file changed, 9 insertions(+), 2 deletions(-)
--- a/rust/kernel/time.rs
+++ b/rust/kernel/time.rs
@@ -421,15 +421,22 @@ impl Delta {
/// to the value in the [`Delta`].
#[inline]
pub fn as_micros_ceil(self) -> i64 {
+ let n = self.as_nanos();
+ let n = if n >= 0 {
+ n.saturating_add(NSEC_PER_USEC - 1)
+ } else {
+ n
+ };
+
#[cfg(CONFIG_64BIT)]
{
- self.as_nanos().saturating_add(NSEC_PER_USEC - 1) / NSEC_PER_USEC
+ n / NSEC_PER_USEC
}
#[cfg(not(CONFIG_64BIT))]
// SAFETY: It is always safe to call `ktime_to_us()` with any value.
unsafe {
- bindings::ktime_to_us(self.as_nanos().saturating_add(NSEC_PER_USEC - 1))
+ bindings::ktime_to_us(n)
}
}
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 471/675] rust: allow `clippy::unwrap_or_default` globally
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (469 preceding siblings ...)
2026-07-30 14:13 ` [PATCH 6.18 470/675] rust: time: fix as_micros_ceil() to round correctly for negative Delta Greg Kroah-Hartman
@ 2026-07-30 14:13 ` Greg Kroah-Hartman
2026-07-30 14:13 ` [PATCH 6.18 472/675] objtool/rust: add one more `noreturn` Rust function for Rust 1.99.0 Greg Kroah-Hartman
` (208 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:13 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Miguel Ojeda, Alexandre Courbot
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Alexandre Courbot <acourbot@nvidia.com>
commit 4688cf884b3abcd12498e03b625d1916bf49a1e4 upstream.
Starting with rustc 1.88, the `clippy::unwrap_or_default` lint triggers
on `rust/kernel/soc.rs` if `CONFIG_CC_OPTIMIZE_FOR_SIZE=y`:
warning: use of `unwrap_or` to construct default value
--> ../rust/kernel/soc.rs:66:10
|
66 | .unwrap_or(core::ptr::null())
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `unwrap_or_default()`
This is a clippy bug [1]: the lint decides whether an expression is
equivalent to `Default::default()` by inspecting the optimized MIR of
`<*const T as Default>::default` exported by `core`, so its outcome
depends on the optimization level `core` was built with. Moreover, its
suggestion ignores our MSRV of 1.85 (`Default` for `*const T` is only
stable since Rust 1.88), so we could not apply it anyway.
Disable the lint globally rather than working around this single
occurrence; it can be re-enabled conditionally using `rustc-min-version`
once clippy is fixed.
Link: https://github.com/rust-lang/rust-clippy/issues/17379 [1]
Suggested-by: Miguel Ojeda <ojeda@kernel.org>
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Cc: stable@vger.kernel.org # Needed in 6.12.y and later (Rust is pinned in older LTSs).
Link: https://patch.msgid.link/20260708-soc_unwrap_or-v2-1-007ed724cc7b@nvidia.com
[ Moved to non-versioned group. - Miguel ]
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
Makefile | 5 +++++
1 file changed, 5 insertions(+)
--- a/Makefile
+++ b/Makefile
@@ -470,6 +470,10 @@ KBUILD_USERLDFLAGS := $(USERLDFLAGS)
# These flags apply to all Rust code in the tree, including the kernel and
# host programs.
+#
+# `-Aclippy::unwrap_or_default`: the lint is buggy [1] and ignores our
+# MSRV. It can trigger depending on the optimization level.
+# [1] https://github.com/rust-lang/rust-clippy/issues/17379
export rust_common_flags := --edition=2021 \
-Zbinary_dep_depinfo=y \
-Astable_features \
@@ -497,6 +501,7 @@ export rust_common_flags := --edition=20
-Aclippy::uninlined_format_args \
-Wclippy::unnecessary_safety_comment \
-Wclippy::unnecessary_safety_doc \
+ -Aclippy::unwrap_or_default \
-Wrustdoc::missing_crate_level_docs \
-Wrustdoc::unescaped_backticks
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 472/675] objtool/rust: add one more `noreturn` Rust function for Rust 1.99.0
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (470 preceding siblings ...)
2026-07-30 14:13 ` [PATCH 6.18 471/675] rust: allow `clippy::unwrap_or_default` globally Greg Kroah-Hartman
@ 2026-07-30 14:13 ` Greg Kroah-Hartman
2026-07-30 14:13 ` [PATCH 6.18 473/675] LoongArch: Fix address space mismatch in kexec command line lookup Greg Kroah-Hartman
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From: Greg Kroah-Hartman @ 2026-07-30 14:13 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Josh Poimboeuf, Peter Zijlstra,
Petr Pavlu, Alice Ryhl, Miguel Ojeda
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Miguel Ojeda <ojeda@kernel.org>
commit 5a81c35c3b18cd59ded56171a6a9f643b92a6759 upstream.
Starting with Rust 1.99.0 (expected 2026-10-01), under
`CONFIG_RUST_DEBUG_ASSERTIONS=y`, `objtool` may report:
rust/kernel.o: warning: objtool: _R..._6kernel12module_param9set_paramaEB4_()
falls through to next function _R..._6kernel12module_param9set_paramhEB4_()
(and many others) due to calls to the `noreturn` symbol [1]:
core::panicking::panic_null_reference_constructed
Thus add the mangled one to the list so that `objtool` knows it is
actually `noreturn`.
See commit 56d680dd23c3 ("objtool/rust: list `noreturn` Rust functions")
for more details.
Cc: stable@vger.kernel.org # Needed in 6.12.y and later (Rust is pinned in older LTSs).
Cc: Josh Poimboeuf <jpoimboe@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Petr Pavlu <petr.pavlu@suse.com>
Link: https://github.com/rust-lang/rust/pull/158796 [1]
Reported-by: Alice Ryhl <aliceryhl@google.com>
Closes: https://lore.kernel.org/rust-for-linux/alEBInX9gD1M5NAr@google.com/
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Tested-by: Alice Ryhl <aliceryhl@google.com>
Link: https://patch.msgid.link/20260710173252.191781-1-ojeda@kernel.org
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
tools/objtool/check.c | 1 +
1 file changed, 1 insertion(+)
--- a/tools/objtool/check.c
+++ b/tools/objtool/check.c
@@ -228,6 +228,7 @@ static bool is_rust_noreturn(const struc
str_ends_with(func->name, "_4core9panicking18panic_nounwind_fmt") ||
str_ends_with(func->name, "_4core9panicking19assert_failed_inner") ||
str_ends_with(func->name, "_4core9panicking30panic_null_pointer_dereference") ||
+ str_ends_with(func->name, "_4core9panicking32panic_null_reference_constructed") ||
str_ends_with(func->name, "_4core9panicking36panic_misaligned_pointer_dereference") ||
str_ends_with(func->name, "_7___rustc17rust_begin_unwind") ||
strstr(func->name, "_4core9panicking13assert_failed") ||
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 473/675] LoongArch: Fix address space mismatch in kexec command line lookup
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (471 preceding siblings ...)
2026-07-30 14:13 ` [PATCH 6.18 472/675] objtool/rust: add one more `noreturn` Rust function for Rust 1.99.0 Greg Kroah-Hartman
@ 2026-07-30 14:13 ` Greg Kroah-Hartman
2026-07-30 14:13 ` [PATCH 6.18 474/675] LoongArch: Fix oops during single-step debugging Greg Kroah-Hartman
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From: Greg Kroah-Hartman @ 2026-07-30 14:13 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, kernel test robot, Kexin Liu,
George Guo, Huacai Chen
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: George Guo <guodongtai@kylinos.cn>
commit 485ed44db5694d8d2e5027f63ad608e705286f30 upstream.
When searching the loaded segments for the "kexec" command line marker,
the kexec_load(2) path (file_mode == 0) passes the user-space segment
buffer straight to strncmp() through a bogus (char __user *) cast. This
dereferences a user pointer in kernel context, which is wrong and is
flagged by sparse:
arch/loongarch/kernel/machine_kexec.c:84:51: sparse: incorrect type in
argument 2 (different address spaces) @@ expected char const * @@ got
char [noderef] __user *
Here copy the marker-sized prefix of each segment into a small on-stack
buffer with copy_from_user() before comparing, and skip segments that
fault. The subsequent copy_from_user() that stages the full command line
into the safe area is left unchanged.
Cc: stable@vger.kernel.org
Fixes: 4a03b2ac06a5 ("LoongArch: Add kexec support")
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202605051639.aEPioXdD-lkp@intel.com/
Co-developed-by: Kexin Liu <liukexin@kylinos.cn>
Signed-off-by: Kexin Liu <liukexin@kylinos.cn>
Signed-off-by: George Guo <guodongtai@kylinos.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/loongarch/kernel/machine_kexec.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
--- a/arch/loongarch/kernel/machine_kexec.c
+++ b/arch/loongarch/kernel/machine_kexec.c
@@ -42,6 +42,7 @@ static unsigned long first_ind_entry;
int machine_kexec_prepare(struct kimage *kimage)
{
int i;
+ char head[8];
char *bootloader = "kexec";
void *cmdline_ptr = (void *)KEXEC_CMDLINE_ADDR;
@@ -59,7 +60,9 @@ int machine_kexec_prepare(struct kimage
} else {
/* Find the command line */
for (i = 0; i < kimage->nr_segments; i++) {
- if (!strncmp(bootloader, (char __user *)kimage->segment[i].buf, strlen(bootloader))) {
+ if (copy_from_user(head, kimage->segment[i].buf, strlen(bootloader)))
+ continue;
+ if (!strncmp(bootloader, head, strlen(bootloader))) {
if (!copy_from_user(cmdline_ptr, kimage->segment[i].buf, COMMAND_LINE_SIZE))
kimage->arch.cmdline_ptr = (unsigned long)cmdline_ptr;
break;
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 474/675] LoongArch: Fix oops during single-step debugging
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (472 preceding siblings ...)
2026-07-30 14:13 ` [PATCH 6.18 473/675] LoongArch: Fix address space mismatch in kexec command line lookup Greg Kroah-Hartman
@ 2026-07-30 14:13 ` Greg Kroah-Hartman
2026-07-30 14:13 ` [PATCH 6.18 475/675] LoongArch: Move jump_label_init() before parse_early_param() Greg Kroah-Hartman
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From: Greg Kroah-Hartman @ 2026-07-30 14:13 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Haoran Jiang, Huacai Chen
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Haoran Jiang <jianghaoran@kylinos.cn>
commit 73555fdab5e1e4f24ca000c41a616b34edf4b55d upstream.
When entering KDB via a breakpoint and then performing single-step
debugging, an oops is triggered. Now during single-step debugging,
kdb_local() expects the reason to be KDB_REASON_SSTEP, but it is
actually KDB_REASON_OOPS. In kdb_stub(), when determining the reason,
the ex_vector for single-step should be 0, as already implemented on
other architectures such as arm64 and riscv.
Before the patch:
[112]kdb> ss
Entering kdb (current=0x900020009f520000, pid 10661) on
processor 112 Oops: (null)
due to oops @ 0x90000000005b57a4
Cc: stable@vger.kernel.org
Signed-off-by: Haoran Jiang <jianghaoran@kylinos.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/loongarch/kernel/kgdb.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/arch/loongarch/kernel/kgdb.c
+++ b/arch/loongarch/kernel/kgdb.c
@@ -252,7 +252,8 @@ static int kgdb_loongarch_notify(struct
if (atomic_read(&kgdb_active) != -1)
kgdb_nmicallback(smp_processor_id(), regs);
- if (kgdb_handle_exception(args->trapnr, args->signr, cmd, regs))
+ if (kgdb_handle_exception(regs->csr_era == stepped_address ? 0 : args->trapnr,
+ args->signr, cmd, regs))
return NOTIFY_DONE;
if (atomic_read(&kgdb_setting_breakpoint))
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 475/675] LoongArch: Move jump_label_init() before parse_early_param()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (473 preceding siblings ...)
2026-07-30 14:13 ` [PATCH 6.18 474/675] LoongArch: Fix oops during single-step debugging Greg Kroah-Hartman
@ 2026-07-30 14:13 ` Greg Kroah-Hartman
2026-07-30 14:13 ` [PATCH 6.18 476/675] LoongArch: Retrieve CPU package ID from PPTT when available Greg Kroah-Hartman
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From: Greg Kroah-Hartman @ 2026-07-30 14:13 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Kanglong Wang, Huacai Chen
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Kanglong Wang <wangkanglong@loongson.cn>
commit ea68d444a658783234a06f05414e41cf93a18fb2 upstream.
When enabling both CONFIG_MEM_ALLOC_PROFILING=y and
CONFIG_MEM_ALLOC_PROFILING_ENABLED_BY_DEFAULT=y, then diabling memory
profiling by adding the boot parameter 'sysctl.vm.mem_profiling=0' will
cause the kernel failed to boot.
After analysis, this is because jump_label_init() must be called before
parse_early_param(), the early param handlers may modify static keys by
static_branch_enable/disable().
Fix this by moving jump_label_init() to before parse_early_param(). The
solution is similar to other architectures.
Cc: <stable@vger.kernel.org>
Signed-off-by: Kanglong Wang <wangkanglong@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/loongarch/kernel/setup.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
--- a/arch/loongarch/kernel/setup.c
+++ b/arch/loongarch/kernel/setup.c
@@ -610,6 +610,7 @@ void __init setup_arch(char **cmdline_p)
memblock_init();
pagetable_init();
bootcmdline_init(cmdline_p);
+ jump_label_init(); /* Initialise the static keys for early params */
parse_early_param();
reserve_initrd_mem();
@@ -617,8 +618,6 @@ void __init setup_arch(char **cmdline_p)
arch_mem_init(cmdline_p);
resource_init();
- jump_label_init(); /* Initialise the static keys for paravirtualization */
-
#ifdef CONFIG_SMP
plat_smp_setup();
prefill_possible_map();
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 476/675] LoongArch: Retrieve CPU package ID from PPTT when available
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (474 preceding siblings ...)
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@ 2026-07-30 14:13 ` Greg Kroah-Hartman
2026-07-30 14:13 ` [PATCH 6.18 477/675] cdrom: fix stack out-of-bounds read in CDROMVOLCTRL Greg Kroah-Hartman
` (203 subsequent siblings)
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From: Greg Kroah-Hartman @ 2026-07-30 14:13 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Mingcong Bai, Xi Ruoyao, Rong Bao,
Huacai Chen
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Rong Bao <rong.bao@csmantle.top>
commit 4e8f58620f6717f72f3d88a2c8f25c0c656d0ba7 upstream.
Currently, the LoongArch CPU topology initialization code calculates
each core's package ID by dividing its physical ID by loongson_sysconf.
cores_per_package. This relies on the assumption that cores_per_package
counts in the same domain as physical IDs.
On Loongson-3B6000 (XB612B0V_1.2), cores_per_package matches the visible
core count -- 24 in this case. However, the physical IDs range from 0 to
31 in a noncontinuous fashion:
$ cat /proc/cpuinfo | grep -i -F 'global_id'
global_id : 0
global_id : 1
global_id : 4
global_id : 5
global_id : 6
global_id : 7
global_id : 8
global_id : 9
global_id : 10
global_id : 11
global_id : 14
global_id : 15
global_id : 16
global_id : 17
global_id : 20
global_id : 21
global_id : 22
global_id : 23
global_id : 26
global_id : 27
global_id : 28
global_id : 29
global_id : 30
global_id : 31
Retrieve the exact package ID from ACPI PPTT when available, in the same
style as retrieving the core ID and thread ID in parse_acpi_topology().
Use this information in loongson_init_secondary() when the PPTT readout
is successful. The original division logic is kept as a fallback.
Meanwhile, since some existing code paths like loongson3_cpufreq expect
a continuous integer sequence of package IDs in [0, MAX_PACKAGES) when
retrieving from cpu_data[], here we also canonicalize the package ID to
be filled in parse_acpi_topology() to meet such an expectation.
Cc: stable@vger.kernel.org
Tested-by: Mingcong Bai <jeffbai@aosc.io>
Co-developed-by: Xi Ruoyao <xry111@xry111.site>
Signed-off-by: Xi Ruoyao <xry111@xry111.site>
Signed-off-by: Rong Bao <rong.bao@csmantle.top>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/loongarch/kernel/acpi.c | 27 ++++++++++++++++++++++++++-
arch/loongarch/kernel/smp.c | 4 ++--
2 files changed, 28 insertions(+), 3 deletions(-)
--- a/arch/loongarch/kernel/acpi.c
+++ b/arch/loongarch/kernel/acpi.c
@@ -201,10 +201,12 @@ static void __init acpi_process_madt(voi
}
int pptt_enabled;
+static int acpi_nr_packages;
+static int acpi_package_ids[MAX_PACKAGES];
int __init parse_acpi_topology(void)
{
- int cpu, topology_id;
+ int i, cpu, topology_id;
for_each_possible_cpu(cpu) {
topology_id = find_acpi_cpu_topology(cpu, 0);
@@ -222,6 +224,29 @@ int __init parse_acpi_topology(void)
cpu_data[cpu].core = topology_id;
}
+
+ topology_id = find_acpi_cpu_topology_package(cpu);
+ if (topology_id < 0) {
+ pr_warn("Invalid BIOS PPTT\n");
+ return -ENOENT;
+ }
+
+ for (i = 0; i < acpi_nr_packages; i++)
+ if (acpi_package_ids[i] == topology_id)
+ break;
+
+ if (i == acpi_nr_packages)
+ acpi_package_ids[acpi_nr_packages++] = topology_id;
+
+ cpu_data[cpu].package = topology_id;
+ }
+
+ for_each_possible_cpu(cpu) {
+ for (i = 0; i < acpi_nr_packages; i++)
+ if (cpu_data[cpu].package == acpi_package_ids[i]) {
+ cpu_data[cpu].package = i; /* Canonicalize */
+ break;
+ }
}
pptt_enabled = 1;
--- a/arch/loongarch/kernel/smp.c
+++ b/arch/loongarch/kernel/smp.c
@@ -412,10 +412,10 @@ void loongson_init_secondary(void)
numa_add_cpu(cpu);
#endif
per_cpu(cpu_state, cpu) = CPU_ONLINE;
- cpu_data[cpu].package =
- cpu_logical_map(cpu) / loongson_sysconf.cores_per_package;
cpu_data[cpu].core = pptt_enabled ? cpu_data[cpu].core :
cpu_logical_map(cpu) % loongson_sysconf.cores_per_package;
+ cpu_data[cpu].package = pptt_enabled ? cpu_data[cpu].package :
+ cpu_logical_map(cpu) / loongson_sysconf.cores_per_package;
cpu_data[cpu].global_id = cpu_logical_map(cpu);
}
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 477/675] cdrom: fix stack out-of-bounds read in CDROMVOLCTRL
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (475 preceding siblings ...)
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@ 2026-07-30 14:13 ` Greg Kroah-Hartman
2026-07-30 14:13 ` [PATCH 6.18 478/675] rhashtable: clear stale iter->p on table restart Greg Kroah-Hartman
` (202 subsequent siblings)
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From: Greg Kroah-Hartman @ 2026-07-30 14:13 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Xu Rao, Phillip Potter, Jens Axboe
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Xu Rao <raoxu@uniontech.com>
commit b27e195d4db8dea263050bdbeb11881b2999c9c6 upstream.
mmc_ioctl_cdrom_volume() first reads the audio control mode page into a
32-byte stack buffer with cgc->buflen set to 24. If the device reports a
block descriptor, the function increases cgc->buflen to include that
descriptor and reads the page again.
For CDROMVOLCTRL, the function then builds a MODE SELECT parameter list
by moving cgc->buffer forward by offset - 8 bytes. This drops the block
descriptor from the outgoing payload and leaves a new 8-byte mode
parameter header in front of the audio control page. However, cgc->buflen
is left unchanged.
With a standard 8-byte block descriptor, cgc->buffer points at buffer + 8
but cgc->buflen remains 32. cdrom_mode_select() therefore asks the low
level packet path to write 32 bytes from that adjusted pointer, reading 8
bytes past the end of the 32-byte stack buffer.
This is not hit by CDROMVOLREAD, and CDROMVOLCTRL only triggers it on
drives that return a non-zero block descriptor length, which helps explain
why it has gone unnoticed. The overread is also sent to the device as
extra MODE SELECT payload, so it may not produce an obvious local failure.
Reduce cgc->buflen by the same amount as the buffer pointer adjustment so
the MODE SELECT transfer covers only the intended parameter list.
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Cc: stable@vger.kernel.org
Signed-off-by: Xu Rao <raoxu@uniontech.com>
Signed-off-by: Phillip Potter <phil@philpotter.co.uk>
Link: https://patch.msgid.link/20260720194421.1497-2-phil@philpotter.co.uk
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/cdrom/cdrom.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/cdrom/cdrom.c
+++ b/drivers/cdrom/cdrom.c
@@ -3187,6 +3187,7 @@ static noinline int mmc_ioctl_cdrom_volu
/* set volume */
cgc->buffer = buffer + offset - 8;
+ cgc->buflen -= offset - 8;
memset(cgc->buffer, 0, 8);
return cdrom_mode_select(cdi, cgc);
}
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 478/675] rhashtable: clear stale iter->p on table restart
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (476 preceding siblings ...)
2026-07-30 14:13 ` [PATCH 6.18 477/675] cdrom: fix stack out-of-bounds read in CDROMVOLCTRL Greg Kroah-Hartman
@ 2026-07-30 14:13 ` Greg Kroah-Hartman
2026-07-30 14:13 ` [PATCH 6.18 479/675] firmware: stratix10-svc: fix memory leaks and list corruption bugs Greg Kroah-Hartman
` (201 subsequent siblings)
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From: Greg Kroah-Hartman @ 2026-07-30 14:13 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, AutonomousCodeSecurity, Yuan Tan,
Cen Zhang (Microsoft), NeilBrown, Herbert Xu
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Cen Zhang (Microsoft) <blbllhy@gmail.com>
commit 8173f7e2ce67e6ca1d4763f3da14e5b01ce77456 upstream.
rhashtable_walk_start_check() has two restart paths when resuming a walk.
When iter->walker.tbl is valid, it re-validates iter->p against the table
and sets iter->p = NULL if the object is gone. When iter->walker.tbl is
NULL (table was freed during resize), it resets slot and skip but forgets
to clear iter->p.
rhashtable_walk_next() then dereferences the stale iter->p, reading
freed memory. This is a use-after-free.
Any caller that does multi-fragment rhashtable walks across
walk_stop/walk_start boundaries is affected. Concrete cases include
netlink_diag (__netlink_diag_dump in net/netlink/diag.c) and TIPC
(tipc_nl_sk_walk in net/tipc/socket.c).
Crash stack (netlink_diag):
BUG: KASAN: slab-use-after-free in rhashtable_walk_next+0x365/0x3c0
Read of size 8 at addr ffff88801a9d2438 (freed kmalloc-2k, offset 1080)
Call Trace:
rhashtable_walk_next+0x365/0x3c0 (lib/rhashtable.c:1016)
__netlink_diag_dump+0x160/0x760 (net/netlink/diag.c:122)
netlink_diag_dump+0xc2/0x240
netlink_dump+0x5bc/0x1270
netlink_recvmsg+0x7a3/0x980
sock_recvmsg+0x1bc/0x200
__sys_recvfrom+0x1d4/0x2c0
Fixes: 5d240a8936f6 ("rhashtable: improve rhashtable_walk stability when stop/start used.")
Cc: <stable@vger.kernel.org>
Reported-by: AutonomousCodeSecurity@microsoft.com
Reported-by: Yuan Tan <yuantan098@gmail.com>
Closes: https://lore.kernel.org/linux-crypto/CAB8m9Wh559e+=n8z51gB8DrbEyCc2mc0MgGjrRR6_VXBmU=2AQ@mail.gmail.com
Signed-off-by: Cen Zhang (Microsoft) <blbllhy@gmail.com>
Reviewed-by: NeilBrown <neil@brown.name>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
lib/rhashtable.c | 1 +
1 file changed, 1 insertion(+)
--- a/lib/rhashtable.c
+++ b/lib/rhashtable.c
@@ -742,6 +742,7 @@ int rhashtable_walk_start_check(struct r
iter->walker.tbl = rht_dereference_rcu(ht->tbl, ht);
iter->slot = 0;
iter->skip = 0;
+ iter->p = NULL;
return -EAGAIN;
}
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 479/675] firmware: stratix10-svc: fix memory leaks and list corruption bugs
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (477 preceding siblings ...)
2026-07-30 14:13 ` [PATCH 6.18 478/675] rhashtable: clear stale iter->p on table restart Greg Kroah-Hartman
@ 2026-07-30 14:13 ` Greg Kroah-Hartman
2026-07-30 14:13 ` [PATCH 6.18 480/675] x86/boot/compressed: Disable jump tables Greg Kroah-Hartman
` (200 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:13 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Tze Yee Ng, Dinh Nguyen
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Tze Yee Ng <tze.yee.ng@altera.com>
commit 9119ceb76e987c2ec2b549ea100e3268ce3a1c7c upstream.
Fix a memory leak when gen_pool_alloc() fails by freeing pmem on the error
path. Switch pmem allocation from devm_kzalloc() to kzalloc() with
explicit kfree() in the free path to match its list-managed lifetime.
Remove the erroneous list_del(&svc_data_mem) which corrupted the list head
on failed lookups.
Fixes: 7ca5ce896524 ("firmware: add Intel Stratix10 service layer driver")
Cc: stable@vger.kernel.org # 5.0+
Signed-off-by: Tze Yee Ng <tze.yee.ng@altera.com>
Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/firmware/stratix10-svc.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
--- a/drivers/firmware/stratix10-svc.c
+++ b/drivers/firmware/stratix10-svc.c
@@ -1080,14 +1080,16 @@ void *stratix10_svc_allocate_memory(stru
struct gen_pool *genpool = chan->ctrl->genpool;
size_t s = roundup(size, 1 << genpool->min_alloc_order);
- pmem = devm_kzalloc(chan->ctrl->dev, sizeof(*pmem), GFP_KERNEL);
+ pmem = kzalloc_obj(*pmem);
if (!pmem)
return ERR_PTR(-ENOMEM);
guard(mutex)(&svc_mem_lock);
va = gen_pool_alloc(genpool, s);
- if (!va)
+ if (!va) {
+ kfree(pmem);
return ERR_PTR(-ENOMEM);
+ }
memset((void *)va, 0, s);
pa = gen_pool_virt_to_phys(genpool, va);
@@ -1113,6 +1115,7 @@ EXPORT_SYMBOL_GPL(stratix10_svc_allocate
void stratix10_svc_free_memory(struct stratix10_svc_chan *chan, void *kaddr)
{
struct stratix10_svc_data_mem *pmem;
+
guard(mutex)(&svc_mem_lock);
list_for_each_entry(pmem, &svc_data_mem, node)
@@ -1121,10 +1124,9 @@ void stratix10_svc_free_memory(struct st
(unsigned long)kaddr, pmem->size);
pmem->vaddr = NULL;
list_del(&pmem->node);
+ kfree(pmem);
return;
}
-
- list_del(&svc_data_mem);
}
EXPORT_SYMBOL_GPL(stratix10_svc_free_memory);
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 480/675] x86/boot/compressed: Disable jump tables
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (478 preceding siblings ...)
2026-07-30 14:13 ` [PATCH 6.18 479/675] firmware: stratix10-svc: fix memory leaks and list corruption bugs Greg Kroah-Hartman
@ 2026-07-30 14:13 ` Greg Kroah-Hartman
2026-07-30 14:13 ` [PATCH 6.18 481/675] comedi: comedi_parport: deal with premature interrupt Greg Kroah-Hartman
` (199 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:13 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Nathan Chancellor, Ingo Molnar,
Ard Biesheuvel, Bill Wendling, Justin Stitt, Nick Desaulniers,
H. Peter Anvin, Peter Zijlstra
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Nathan Chancellor <nathan@kernel.org>
commit 4a9ec5ec9555ad62dc5b81a37ac946025c2ea002 upstream.
After a recent upstream LLVM change to start generating jump and lookup
tables in switch statements in more instances [1], linking the
compressed x86 boot image when CONFIG_KERNEL_ZSTD is enabled fails with:
ld.lld: error: Unexpected run-time relocations (.rela) detected!
Dumping the relocations in misc.o, which is the only file influenced by
CONFIG_KERNEL_ZSTD in the decompressor, shows dynamic relocations to
some string constants, which correspond to the string literals in the
switch statement in handle_zstd_error():
Relocation section '.rela.data.rel.ro' at offset 0x277b0 contains 31 entries:
Offset Info Type Symbol's Value Symbol's Name + Addend
0000000000000000 0000006600000001 R_X86_64_64 0000000000000000 .rodata.str1.1 + 73a
0000000000000008 0000006600000001 R_X86_64_64 0000000000000000 .rodata.str1.1 + 78e
0000000000000010 0000006600000001 R_X86_64_64 0000000000000000 .rodata.str1.1 + 78e
0000000000000018 0000006600000001 R_X86_64_64 0000000000000000 .rodata.str1.1 + 78e
...
This optimization is problematic for the decompressor environment, as it
is built as -fPIE without any explicit absolute references (as described
at the top of misc.c) while not applying any dynamic relocations, hence
the linker assertion. To opt out of this optimization, which is of
little value in this special early boot code, and to mirror the other
x86 startup code in arch/x86/boot/startup, disable jump tables in the
decompressor.
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Cc: Bill Wendling <morbo@google.com>
Cc: Justin Stitt <justinstitt@google.com>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: stable@vger.kernel.org
Link: https://github.com/llvm/llvm-project/commit/fa02a6ed66b1700c996b49c96c6bc0eb014c9518 [1]
Link: https://patch.msgid.link/20260722-x86-boot-compressed-disable-jt-clang-v2-1-7373d38482fb@kernel.org
Closes: https://github.com/ClangBuiltLinux/linux/issues/2165
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/x86/boot/compressed/Makefile | 1 +
1 file changed, 1 insertion(+)
--- a/arch/x86/boot/compressed/Makefile
+++ b/arch/x86/boot/compressed/Makefile
@@ -27,6 +27,7 @@ targets := vmlinux vmlinux.bin vmlinux.b
KBUILD_CFLAGS := -m$(BITS) -O2 $(CLANG_FLAGS)
KBUILD_CFLAGS += -std=gnu11
KBUILD_CFLAGS += -fno-strict-aliasing -fPIE
+KBUILD_CFLAGS += -fno-jump-tables
KBUILD_CFLAGS += -Wundef
KBUILD_CFLAGS += -DDISABLE_BRANCH_PROFILING
cflags-$(CONFIG_X86_32) := -march=i386
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 481/675] comedi: comedi_parport: deal with premature interrupt
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (479 preceding siblings ...)
2026-07-30 14:13 ` [PATCH 6.18 480/675] x86/boot/compressed: Disable jump tables Greg Kroah-Hartman
@ 2026-07-30 14:13 ` Greg Kroah-Hartman
2026-07-30 14:13 ` [PATCH 6.18 482/675] uio_hv_generic: Bind to FCopy device by default Greg Kroah-Hartman
` (198 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:13 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, syzbot+f24c3d5d316011bacc70, stable,
Ian Abbott
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Ian Abbott <abbotti@mev.co.uk>
commit 17221216ae8ce6a24e8a4e787382e3ebc81b88a8 upstream.
Syzbot reported a general protection fault in
`comedi_get_is_subdevice_running()`, which was called from the interrupt
handler `parport_interrupt()` in the "comedi_parport" driver, but it
does not currently have a C reproducer for the problem. It's
probably due to a premature interrupt for one of two reasons:
1. The driver sets up the interrupt handler before the comedi subdevices
used by the interrupt handler have been allocated, but does not
disable the interrupt in the parallel port's CTRL register first.
2. The driver uses a user-supplied I/O port base address which Syzbot
would have supplied, but it might not be backed by real parallel port
hardware.
Change the initialization order in the driver's comedi "attach" handler
(`parport_attach()`) so that the hardware registers are initialized
before the interrupt handler is requested. This should prevent
premature interrupts occurring for real hardware.
Also add a test to the interrupt handler to ensure the comedi device is
fully attached and return early if it isn't.
Fixes: 241ab6ad7108e ("Staging: comedi: add comedi_parport driver")
Reported-by: syzbot+f24c3d5d316011bacc70@syzkaller.appspotmail.com
Cc: stable <stable@kernel.org>
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Link: https://patch.msgid.link/20260527125104.96596-1-abbotti@mev.co.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/comedi/drivers/comedi_parport.c | 13 ++++++++++---
1 file changed, 10 insertions(+), 3 deletions(-)
--- a/drivers/comedi/drivers/comedi_parport.c
+++ b/drivers/comedi/drivers/comedi_parport.c
@@ -211,6 +211,13 @@ static irqreturn_t parport_interrupt(int
unsigned int ctrl;
unsigned short val = 0;
+ /*
+ * Check device is fully attached. Device interrupts should have
+ * been disabled, but do this in case of bad hardware.
+ */
+ if (!dev->attached)
+ return IRQ_NONE;
+
ctrl = inb(dev->iobase + PARPORT_CTRL_REG);
if (!(ctrl & PARPORT_CTRL_IRQ_ENA))
return IRQ_NONE;
@@ -231,6 +238,9 @@ static int parport_attach(struct comedi_
if (ret)
return ret;
+ outb(0, dev->iobase + PARPORT_DATA_REG);
+ outb(0, dev->iobase + PARPORT_CTRL_REG);
+
if (it->options[1]) {
ret = request_irq(it->options[1], parport_interrupt, 0,
dev->board_name, dev);
@@ -286,9 +296,6 @@ static int parport_attach(struct comedi_
s->cancel = parport_intr_cancel;
}
- outb(0, dev->iobase + PARPORT_DATA_REG);
- outb(0, dev->iobase + PARPORT_CTRL_REG);
-
return 0;
}
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 482/675] uio_hv_generic: Bind to FCopy device by default
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (480 preceding siblings ...)
2026-07-30 14:13 ` [PATCH 6.18 481/675] comedi: comedi_parport: deal with premature interrupt Greg Kroah-Hartman
@ 2026-07-30 14:13 ` Greg Kroah-Hartman
2026-07-30 14:13 ` [PATCH 6.18 483/675] serial: sc16is7xx: implement gpio get_direction() callback Greg Kroah-Hartman
` (197 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:13 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Ben Hutchings, stable
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Ben Hutchings <benh@debian.org>
commit 87d3621ccc63b3999d756bb59f0cedd738c28eb3 upstream.
The Hyper-V kernel-mode fcopy driver was removed in 6.10 and the new
fcopy daemon requires this uio driver to function. However, by
default the driver does not bind to any devices, and must be
configured through the sysfs "new_id" file.
Since the FCopy device is now only usable through this driver, add its
ID to the driver's ID table so that the daemon will work "out of the
box".
Signed-off-by: Ben Hutchings <benh@debian.org>
Fixes: ec314f61e4fc ("Drivers: hv: Remove fcopy driver")
Cc: stable <stable@kernel.org>
Link: https://patch.msgid.link/ahQ6xuhSReidmN-3@decadent.org.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/uio/uio_hv_generic.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
--- a/drivers/uio/uio_hv_generic.c
+++ b/drivers/uio/uio_hv_generic.c
@@ -395,9 +395,15 @@ hv_uio_remove(struct hv_device *dev)
vmbus_free_ring(dev->channel);
}
+static const struct hv_vmbus_device_id hv_uio_id_table[] = {
+ { HV_FCOPY_GUID },
+ {}
+};
+MODULE_DEVICE_TABLE(vmbus, hv_uio_id_table);
+
static struct hv_driver hv_uio_drv = {
.name = "uio_hv_generic",
- .id_table = NULL, /* only dynamic id's */
+ .id_table = hv_uio_id_table,
.probe = hv_uio_probe,
.remove = hv_uio_remove,
};
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 483/675] serial: sc16is7xx: implement gpio get_direction() callback
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (481 preceding siblings ...)
2026-07-30 14:13 ` [PATCH 6.18 482/675] uio_hv_generic: Bind to FCopy device by default Greg Kroah-Hartman
@ 2026-07-30 14:13 ` Greg Kroah-Hartman
2026-07-30 14:13 ` [PATCH 6.18 484/675] serial: 8250_mid: Fix NULL function pointer dereference on DNV/ICX-D/SNR platforms Greg Kroah-Hartman
` (196 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:13 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, stable, Hugo Villeneuve,
Bartosz Golaszewski
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Hugo Villeneuve <hvilleneuve@dimonoff.com>
commit af071d9e07e57cfff239e8d09d2f3b05ebc9c667 upstream.
It's strongly recommended for GPIO drivers to always implement the
.get_direction() callback - even when the direction is tracked in
software. The GPIO core emits a warning when the callback is missing
and a user reads the direction of a line, e.g. via
/sys/kernel/debug/gpio.
Fixes: dfeae619d781 ("serial: sc16is7xx")
Cc: stable <stable@kernel.org>
Signed-off-by: Hugo Villeneuve <hvilleneuve@dimonoff.com>
Acked-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Link: https://patch.msgid.link/20260716210813.2582826-1-hugo@hugovil.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/tty/serial/sc16is7xx.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
--- a/drivers/tty/serial/sc16is7xx.c
+++ b/drivers/tty/serial/sc16is7xx.c
@@ -1328,6 +1328,17 @@ static int sc16is7xx_gpio_set(struct gpi
return 0;
}
+static int sc16is7xx_gpio_get_direction(struct gpio_chip *chip, unsigned int offset)
+{
+ struct sc16is7xx_port *s = gpiochip_get_data(chip);
+ struct uart_port *port = &s->p[0].port;
+ unsigned int val;
+
+ val = sc16is7xx_port_read(port, SC16IS7XX_IODIR_REG);
+
+ return val & BIT(offset) ? GPIO_LINE_DIRECTION_OUT : GPIO_LINE_DIRECTION_IN;
+}
+
static int sc16is7xx_gpio_direction_input(struct gpio_chip *chip,
unsigned offset)
{
@@ -1405,6 +1416,7 @@ static int sc16is7xx_setup_gpio_chip(str
s->gpio.parent = dev;
s->gpio.label = dev_name(dev);
s->gpio.init_valid_mask = sc16is7xx_gpio_init_valid_mask;
+ s->gpio.get_direction = sc16is7xx_gpio_get_direction;
s->gpio.direction_input = sc16is7xx_gpio_direction_input;
s->gpio.get = sc16is7xx_gpio_get;
s->gpio.direction_output = sc16is7xx_gpio_direction_output;
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 484/675] serial: 8250_mid: Fix NULL function pointer dereference on DNV/ICX-D/SNR platforms
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (482 preceding siblings ...)
2026-07-30 14:13 ` [PATCH 6.18 483/675] serial: sc16is7xx: implement gpio get_direction() callback Greg Kroah-Hartman
@ 2026-07-30 14:13 ` Greg Kroah-Hartman
2026-07-30 14:13 ` [PATCH 6.18 485/675] selftests: ntsync: correct CONFIG_NTSYNC name Greg Kroah-Hartman
` (195 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:13 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, stable, Andy Shevchenko,
Jiangshan Yi
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jiangshan Yi <yijiangshan@kylinos.cn>
commit 7fb13fd7e9a59a37cd911efff83abe19e3ee029d upstream.
Commit b1b4efea05a5 ("serial: 8250_mid: Disable DMA for selected
platforms") replaced the dnv_board setup and exit callbacks with
PTR_IF(false, ...), which evaluates to NULL. However, the three call
sites in mid8250_probe() and mid8250_remove() unconditionally
dereference these function pointers without NULL checks, causing a NULL
pointer dereference (kernel oops) on any Denverton (DNV), Ice Lake Xeon
D (ICX-D/CDF), or Snowridge (SNR) platform.
Fix this by adding the missing NULL checks before calling the setup and
exit callbacks.
Fixes: b1b4efea05a5 ("serial: 8250_mid: Disable DMA for selected platforms")
Cc: stable <stable@kernel.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Jiangshan Yi <yijiangshan@kylinos.cn>
Link: https://patch.msgid.link/20260715073546.1875083-1-yijiangshan@kylinos.cn
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/tty/serial/8250/8250_mid.c | 14 +++++++++-----
1 file changed, 9 insertions(+), 5 deletions(-)
--- a/drivers/tty/serial/8250/8250_mid.c
+++ b/drivers/tty/serial/8250/8250_mid.c
@@ -318,9 +318,11 @@ static int mid8250_probe(struct pci_dev
if (!uart.port.membase)
return -ENOMEM;
- ret = mid->board->setup(mid, &uart.port);
- if (ret)
- return ret;
+ if (mid->board->setup) {
+ ret = mid->board->setup(mid, &uart.port);
+ if (ret)
+ return ret;
+ }
ret = mid8250_dma_setup(mid, &uart);
if (ret)
@@ -336,7 +338,8 @@ static int mid8250_probe(struct pci_dev
return 0;
err:
- mid->board->exit(mid);
+ if (mid->board->exit)
+ mid->board->exit(mid);
return ret;
}
@@ -346,7 +349,8 @@ static void mid8250_remove(struct pci_de
serial8250_unregister_port(mid->line);
- mid->board->exit(mid);
+ if (mid->board->exit)
+ mid->board->exit(mid);
}
static const struct mid8250_board pnw_board = {
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 485/675] selftests: ntsync: correct CONFIG_NTSYNC name
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (483 preceding siblings ...)
2026-07-30 14:13 ` [PATCH 6.18 484/675] serial: 8250_mid: Fix NULL function pointer dereference on DNV/ICX-D/SNR platforms Greg Kroah-Hartman
@ 2026-07-30 14:13 ` Greg Kroah-Hartman
2026-07-30 14:13 ` [PATCH 6.18 486/675] mei: bus: access mei_device under device_lock on cleanup Greg Kroah-Hartman
` (194 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:13 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, stable, Ethan Nelson-Moore,
Elizabeth Figura
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Ethan Nelson-Moore <enelsonmoore@gmail.com>
commit f97752cfe511c1ed9933057455c73aaac07d6517 upstream.
The config fragment for these tests defines CONFIG_WINESYNC, which
refers to an earlier name for the ntsync driver before it was merged
[1]. Correct it to define CONFIG_NTSYNC instead.
[1] https://lore.kernel.org/all/f4cc1a38-1441-62f8-47e4-0c67f5ad1d43@codeweavers.com/
Fixes: 7f853a252cde ("selftests: ntsync: Add some tests for semaphore state.")
Cc: stable <stable@kernel.org>
Signed-off-by: Ethan Nelson-Moore <enelsonmoore@gmail.com>
Reviewed-by: Elizabeth Figura <zfigura@codeweavers.com>
Link: https://patch.msgid.link/20260609175505.19632-1-enelsonmoore@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
tools/testing/selftests/drivers/ntsync/config | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/tools/testing/selftests/drivers/ntsync/config
+++ b/tools/testing/selftests/drivers/ntsync/config
@@ -1 +1 @@
-CONFIG_WINESYNC=y
+CONFIG_NTSYNC=y
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 486/675] mei: bus: access mei_device under device_lock on cleanup
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (484 preceding siblings ...)
2026-07-30 14:13 ` [PATCH 6.18 485/675] selftests: ntsync: correct CONFIG_NTSYNC name Greg Kroah-Hartman
@ 2026-07-30 14:13 ` Greg Kroah-Hartman
2026-07-30 14:13 ` [PATCH 6.18 487/675] intel_th: fix MSC output device reference leak Greg Kroah-Hartman
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From: Greg Kroah-Hartman @ 2026-07-30 14:13 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, stable, Menachem Adin,
Alexander Usyskin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Alexander Usyskin <alexander.usyskin@intel.com>
commit f112ea910e554d58b4b39a4492b7d302f0f4204f upstream.
Fix couple of problems in mei_cl_bus_dev_release():
mei_cl_flush_queues() is running without lock.
bus->file_list access after mei_dev_bus_put(bus) can become a
use-after-free if this was the last reference to bus.
Protect queues cleanup and WARN traversal by device lock there
to avoid the concurrent access problems.
Move WARN traversal before mei_dev_bus_put(bus).
This file uses bus variable name for mei_device, adjust
code of mei_cl_bus_dev_release() to use bus variable too.
Cc: stable <stable@kernel.org>
Fixes: 35e8a426b16a ("mei: bus: Check for still connected devices in mei_cl_bus_dev_release()")
Reviewed-by: Menachem Adin <menachem.adin@intel.com>
Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Link: https://patch.msgid.link/20260705151259.3054795-1-alexander.usyskin@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/misc/mei/bus.c | 16 +++++++++-------
1 file changed, 9 insertions(+), 7 deletions(-)
--- a/drivers/misc/mei/bus.c
+++ b/drivers/misc/mei/bus.c
@@ -4,6 +4,7 @@
* Intel Management Engine Interface (Intel MEI) Linux driver
*/
+#include <linux/cleanup.h>
#include <linux/module.h>
#include <linux/device.h>
#include <linux/kernel.h>
@@ -1317,15 +1318,16 @@ static void mei_dev_bus_put(struct mei_d
static void mei_cl_bus_dev_release(struct device *dev)
{
struct mei_cl_device *cldev = to_mei_cl_device(dev);
- struct mei_device *mdev = cldev->cl->dev;
+ struct mei_device *bus = cldev->bus;
struct mei_cl *cl;
- mei_cl_flush_queues(cldev->cl, NULL);
- mei_me_cl_put(cldev->me_cl);
- mei_dev_bus_put(cldev->bus);
-
- list_for_each_entry(cl, &mdev->file_list, link)
- WARN_ON(cl == cldev->cl);
+ scoped_guard(mutex, &bus->device_lock) {
+ mei_cl_flush_queues(cldev->cl, NULL);
+ mei_me_cl_put(cldev->me_cl);
+ list_for_each_entry(cl, &bus->file_list, link)
+ WARN_ON(cl == cldev->cl);
+ }
+ mei_dev_bus_put(bus);
kfree(cldev->cl);
kfree(cldev);
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 487/675] intel_th: fix MSC output device reference leak
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (485 preceding siblings ...)
2026-07-30 14:13 ` [PATCH 6.18 486/675] mei: bus: access mei_device under device_lock on cleanup Greg Kroah-Hartman
@ 2026-07-30 14:13 ` Greg Kroah-Hartman
2026-07-30 14:13 ` [PATCH 6.18 488/675] misc: nsm: only unlock nsm_dev on post-lock error paths Greg Kroah-Hartman
` (192 subsequent siblings)
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From: Greg Kroah-Hartman @ 2026-07-30 14:13 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, stable, Guangshuo Li, Johan Hovold
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Guangshuo Li <lgs201920130244@gmail.com>
commit 761b785a0cfbce43761227bc42a7f984f31f8921 upstream.
intel_th_output_open() looks up the output device with
bus_find_device_by_devt(), which returns the device with a reference that
must be dropped after use.
commit 95fc36a234da ("intel_th: fix device leak on output open()")
attempted to drop the reference from intel_th_output_release(). However,
a successful open replaces file->f_op with the output driver file
operations before returning, so close runs the output driver release
callback instead.
For MSC outputs, close runs intel_th_msc_release(), which only removes
the per-file iterator and does not drop the device reference taken by
intel_th_output_open(). Consequently, every successful MSC output open
leaks one device reference.
Drop the device reference from intel_th_msc_release(), which is the
release path actually used for MSC output files. Remove the now-unused
intel_th_output_release() callback from intel_th_output_fops.
Fixes: 95fc36a234da ("intel_th: fix device leak on output open()")
Cc: stable <stable@kernel.org>
Signed-off-by: Guangshuo Li <lgs201920130244@gmail.com>
Reviewed-by: Johan Hovold <johan@kernel.org>
Link: https://patch.msgid.link/20260715070851.2077965-1-lgs201920130244@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/hwtracing/intel_th/core.c | 10 ----------
drivers/hwtracing/intel_th/msu.c | 2 ++
2 files changed, 2 insertions(+), 10 deletions(-)
--- a/drivers/hwtracing/intel_th/core.c
+++ b/drivers/hwtracing/intel_th/core.c
@@ -843,18 +843,8 @@ out_put_device:
return err;
}
-static int intel_th_output_release(struct inode *inode, struct file *file)
-{
- struct intel_th_device *thdev = file->private_data;
-
- put_device(&thdev->dev);
-
- return 0;
-}
-
static const struct file_operations intel_th_output_fops = {
.open = intel_th_output_open,
- .release = intel_th_output_release,
.llseek = noop_llseek,
};
--- a/drivers/hwtracing/intel_th/msu.c
+++ b/drivers/hwtracing/intel_th/msu.c
@@ -1490,8 +1490,10 @@ static int intel_th_msc_release(struct i
{
struct msc_iter *iter = file->private_data;
struct msc *msc = iter->msc;
+ struct intel_th_device *thdev = msc->thdev;
msc_iter_remove(iter, msc);
+ put_device(&thdev->dev);
return 0;
}
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 488/675] misc: nsm: only unlock nsm_dev on post-lock error paths
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (486 preceding siblings ...)
2026-07-30 14:13 ` [PATCH 6.18 487/675] intel_th: fix MSC output device reference leak Greg Kroah-Hartman
@ 2026-07-30 14:13 ` Greg Kroah-Hartman
2026-07-30 14:13 ` [PATCH 6.18 489/675] misc: nsm: pin the module while the device is open Greg Kroah-Hartman
` (191 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:13 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, stable, Runyu Xiao, Alexander Graf
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Runyu Xiao <runyu.xiao@seu.edu.cn>
commit ce1fed11d18e163baf7f875152a33bf80f625c1a upstream.
nsm_dev_ioctl() jumps to the common out label even when the initial
copy_from_user() fails before nsm->lock has been taken. The error path
then blindly unlocks a mutex that was never acquired.
This issue was found by our static analysis tool and then manually
reviewed against the current tree.
The grounded PoC kept the miscdevice ioctl entry and the pre-lock
copy_from_user(&raw, argp, _IOC_SIZE(cmd)) failure path by issuing
NSM_IOCTL_RAW with an invalid user pointer. That failure reaches the
shared out label before mutex_lock(&nsm->lock). Lockdep reported:
WARNING: bad unlock balance detected!
exploit/193 is trying to release lock (&global_nsm.lock) at:
nsm_dev_ioctl+0x5f/0xcf [vuln_msv]
but there are no more locks to release!
no locks held by exploit/193.
Return immediately on the pre-lock copy_from_user() failure and keep the
common unlock label for the post-lock paths only.
Fixes: b9873755a6c8 ("misc: Add Nitro Secure Module driver")
Cc: stable <stable@kernel.org>
Signed-off-by: Runyu Xiao <runyu.xiao@seu.edu.cn>
Reviewed-by: Alexander Graf <graf@amazon.com>
Link: https://patch.msgid.link/20260617145350.513875-1-runyu.xiao@seu.edu.cn
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/misc/nsm.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/misc/nsm.c
+++ b/drivers/misc/nsm.c
@@ -367,7 +367,7 @@ static long nsm_dev_ioctl(struct file *f
/* Copy user argument struct to kernel argument struct */
r = -EFAULT;
if (copy_from_user(&raw, argp, _IOC_SIZE(cmd)))
- goto out;
+ return r;
mutex_lock(&nsm->lock);
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 489/675] misc: nsm: pin the module while the device is open
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (487 preceding siblings ...)
2026-07-30 14:13 ` [PATCH 6.18 488/675] misc: nsm: only unlock nsm_dev on post-lock error paths Greg Kroah-Hartman
@ 2026-07-30 14:13 ` Greg Kroah-Hartman
2026-07-30 14:13 ` [PATCH 6.18 490/675] tracing: Fix context switch counter truncation Greg Kroah-Hartman
` (190 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:13 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, stable, Xu Rao
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Xu Rao <raoxu@uniontech.com>
commit 3b231f1e9990f4c21220d0a69733ce2105891ff9 upstream.
misc_open() installs a misc driver's file operations with fops_get(),
which pins file_operations::owner before replacing the file's f_op. The
NSM misc device leaves nsm_dev_fops.owner unset, so opening /dev/nsm does
not take a module reference on the nsm driver.
If the driver is built as a module, an open file descriptor can therefore
survive rmmod of the module that provides its ioctl callbacks. A later
ioctl through that descriptor can call into unloaded module text.
Set nsm_dev_fops.owner to THIS_MODULE so the misc core holds the module
while any /dev/nsm file descriptor is open, matching the lifetime
expectation for the installed file operations.
Fixes: b9873755a6c8 ("misc: Add Nitro Secure Module driver")
Cc: stable <stable@kernel.org>
Signed-off-by: Xu Rao <raoxu@uniontech.com>
Link: https://patch.msgid.link/BE6951D13B5E5513+20260713055523.3193089-1-raoxu@uniontech.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/misc/nsm.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/misc/nsm.c
+++ b/drivers/misc/nsm.c
@@ -413,6 +413,7 @@ static int nsm_device_init_vq(struct vir
}
static const struct file_operations nsm_dev_fops = {
+ .owner = THIS_MODULE,
.unlocked_ioctl = nsm_dev_ioctl,
.compat_ioctl = compat_ptr_ioctl,
};
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 490/675] tracing: Fix context switch counter truncation
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (488 preceding siblings ...)
2026-07-30 14:13 ` [PATCH 6.18 489/675] misc: nsm: pin the module while the device is open Greg Kroah-Hartman
@ 2026-07-30 14:13 ` Greg Kroah-Hartman
2026-07-30 14:13 ` [PATCH 6.18 491/675] tracing: Fix mmiotrace possible NULL dereferencing of hiter->dev Greg Kroah-Hartman
` (189 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:13 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Breno Leitao, Usama Arif,
Masami Hiramatsu (Google), Steven Rostedt
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Usama Arif <usama.arif@linux.dev>
commit 8f76afb9b114bee1c1251e0e52553e9dc7c59f20 upstream.
trace_user_fault_read() samples nr_context_switches_cpu() before enabling
preemption and retries the user copy if the counter changes. The helper
returns unsigned long long because rq->nr_switches is u64, but the saved
value is unsigned int.
Once a CPU has performed 2^32 context switches, assigning the counter to
cnt discards its upper bits. The comparison after the copy promotes cnt
back to unsigned long long, but the lost bits remain zero, so it reports a
change even when the task was never scheduled out. Every retry then fails
the same way until the 100-try guard warns and the user copy is abandoned.
This affects long-running systems and workloads with high context-switch
rates. A CPU switching 1,000 times per second takes about 50 days.
Store the sampled count in unsigned long long so the full value is
preserved.
Cc: stable@vger.kernel.org
Fixes: 64cf7d058a00 ("tracing: Have trace_marker use per-cpu data to read user space")
Link: https://patch.msgid.link/20260717173252.3431565-1-usama.arif@linux.dev
Reported-by: Breno Leitao <leitao@debian.org>
Signed-off-by: Usama Arif <usama.arif@linux.dev>
Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Reviewed-by: Breno Leitao <leitao@debian.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
kernel/trace/trace.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -7325,7 +7325,7 @@ static char *trace_user_fault_read(struc
{
int cpu = smp_processor_id();
char *buffer = per_cpu_ptr(tinfo->tbuf, cpu)->buf;
- unsigned int cnt;
+ unsigned long long cnt;
int trys = 0;
int ret;
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 491/675] tracing: Fix mmiotrace possible NULL dereferencing of hiter->dev
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (489 preceding siblings ...)
2026-07-30 14:13 ` [PATCH 6.18 490/675] tracing: Fix context switch counter truncation Greg Kroah-Hartman
@ 2026-07-30 14:13 ` Greg Kroah-Hartman
2026-07-30 14:13 ` [PATCH 6.18 492/675] tracing: Fix resource leak on mmiotrace trace_pipe close Greg Kroah-Hartman
` (188 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:13 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Sashiko, Steven Rostedt
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Steven Rostedt <rostedt@goodmis.org>
commit 144f29e85702234b23d2a62abf723e6a17eb5427 upstream.
If the mmio_pipe_open() fails to find a PCI device, the hiter->dev
will be assigned to NULL. The mmiotrace read() function dereferences the
hiter->dev if hiter exists.
Change the test of the read to not only check hiter being NULL, but also
the hiter->dev before dereferencing it.
Cc: stable@vger.kernel.org
Link: https://patch.msgid.link/20260721211143.36dbd559@gandalf.local.home
Fixes: f984b51e0779 ("ftrace: add mmiotrace plugin")
Reported-by: Sashiko <sashiko-bot@kernel.org>
Link: https://sashiko.dev/#/patchset/20260715143604.14481-1-gaikwad.dcg%40gmail.com
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
kernel/trace/trace_mmiotrace.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/kernel/trace/trace_mmiotrace.c
+++ b/kernel/trace/trace_mmiotrace.c
@@ -146,7 +146,7 @@ static ssize_t mmio_read(struct trace_it
goto print_out;
}
- if (!hiter)
+ if (!hiter || !hiter->dev)
return 0;
mmio_print_pcidev(s, hiter->dev);
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 492/675] tracing: Fix resource leak on mmiotrace trace_pipe close
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (490 preceding siblings ...)
2026-07-30 14:13 ` [PATCH 6.18 491/675] tracing: Fix mmiotrace possible NULL dereferencing of hiter->dev Greg Kroah-Hartman
@ 2026-07-30 14:13 ` Greg Kroah-Hartman
2026-07-30 14:13 ` [PATCH 6.18 493/675] tracing: Fix union collision of module and refcnt for dynamic events Greg Kroah-Hartman
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679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:13 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, deepakraog, Steven Rostedt
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: deepakraog <gaikwad.dcg@gmail.com>
commit c1d87e724ae55e781b7cc7ccafb34d9e668582b2 upstream.
The mmiotrace tracer was added May 12th 2008. At that time, resources
created in pipe_open() could not be freed because there was not
pipe_close function pointer of the tracer. The pipe_close function pointer
was added in December 7th, 2009, but the mmiotrace tracer was not updated.
mmio_pipe_open() allocates a header_iter and takes a pci_dev reference
when trace_pipe is opened. mmio_close() frees them, but it was only
wired to the tracer's .close callback.
tracing_release_pipe() invokes .pipe_close, not .close, when the
trace_pipe file is released. As a result, closing trace_pipe with the
mmiotrace tracer active leaked the header_iter allocation and left a
stale pci_dev reference.
Set .pipe_close to mmio_close, matching how function_graph wires both
callbacks to the same handler.
Note, if the trace_pipe is read to completion, it will clean up the
resources, but if one were to run:
# head -n 1 /sys/kernel/tracing/trace_pipe
VERSION 20070824
Over and over again, it would trigger a massive leak.
Cc: stable@vger.kernel.org
Fixes: c521efd1700a8 ("tracing: Add pipe_close interface)
Link: https://patch.msgid.link/20260715143604.14481-1-gaikwad.dcg@gmail.com
Signed-off-by: deepakraog <gaikwad.dcg@gmail.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
kernel/trace/trace_mmiotrace.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/kernel/trace/trace_mmiotrace.c
+++ b/kernel/trace/trace_mmiotrace.c
@@ -109,7 +109,6 @@ static void mmio_pipe_open(struct trace_
iter->private = hiter;
}
-/* XXX: This is not called when the pipe is closed! */
static void mmio_close(struct trace_iterator *iter)
{
struct header_iter *hiter = iter->private;
@@ -279,6 +278,7 @@ static struct tracer mmio_tracer __read_
.start = mmio_trace_start,
.pipe_open = mmio_pipe_open,
.close = mmio_close,
+ .pipe_close = mmio_close,
.read = mmio_read,
.print_line = mmio_print_line,
.noboot = true,
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 493/675] tracing: Fix union collision of module and refcnt for dynamic events
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (491 preceding siblings ...)
2026-07-30 14:13 ` [PATCH 6.18 492/675] tracing: Fix resource leak on mmiotrace trace_pipe close Greg Kroah-Hartman
@ 2026-07-30 14:13 ` Greg Kroah-Hartman
2026-07-30 14:13 ` [PATCH 6.18 494/675] tracing/eprobe: Fix exact system name matching in eprobe_dyn_event_match() Greg Kroah-Hartman
` (186 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:13 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Masami Hiramatsu (Google),
Steven Rostedt
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Masami Hiramatsu (Google) <mhiramat@kernel.org>
commit b4eb07bde606c2096b24252be589e735eff6d413 upstream.
In 'struct trace_event_call', the 'module' pointer and the 'refcnt'
atomic variable share the same memory space in a union. For dynamic
events, the union member is 'refcnt', which acts as an active
reference counter.
When a dynamic event (such as kprobe, uprobe, fprobe, eprobe, or
wprobe) has a non-zero reference count (e.g. due to active event
triggers or perf attachments), its 'call->module' evaluates to a
small non-zero integer instead of NULL.
When filtering or setting events for a specific module (e.g., writing
':mod:<module>' to 'set_event'), the code in
'__ftrace_set_clr_event_nolock()' and 'update_event_fields()' reads
'call->module' directly without checking whether the event is dynamic.
This causes the kernel to treat the small integer (refcnt) as a
'struct module' pointer, leading to a NULL/invalid pointer dereference
(Oops) when dereferencing the module name.
Fix this by ensuring that the 'TRACE_EVENT_FL_DYNAMIC' flag is checked
before treating 'call->module' as a valid pointer in these code paths.
Cc: stable@vger.kernel.org
Link: https://patch.msgid.link/178425670947.84440.11344393611899824907.stgit@devnote2
Fixes: 4c86bc531e60 ("tracing: Add :mod: command to enabled module events")
Assisted-by: Antigravity:gemini-3.5-flash
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
kernel/trace/trace_events.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--- a/kernel/trace/trace_events.c
+++ b/kernel/trace/trace_events.c
@@ -1333,7 +1333,9 @@ __ftrace_set_clr_event_nolock(struct tra
call = file->event_call;
/* If a module is specified, skip events that are not that module */
- if (module && (!call->module || strcmp(module_name(call->module), module)))
+ if (module &&
+ ((call->flags & TRACE_EVENT_FL_DYNAMIC) ||
+ !call->module || strcmp(module_name(call->module), module)))
continue;
name = trace_event_name(call);
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 494/675] tracing/eprobe: Fix exact system name matching in eprobe_dyn_event_match()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (492 preceding siblings ...)
2026-07-30 14:13 ` [PATCH 6.18 493/675] tracing: Fix union collision of module and refcnt for dynamic events Greg Kroah-Hartman
@ 2026-07-30 14:13 ` Greg Kroah-Hartman
2026-07-30 14:13 ` [PATCH 6.18 495/675] tracing/probes: Avoid temporary buffer truncation in trace_probe_match_command_args() Greg Kroah-Hartman
` (185 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:13 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Masami Hiramatsu (Google)
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Masami Hiramatsu (Google) <mhiramat@kernel.org>
commit f418d68d71fd4a0a9cef92377bc8c4c3334b5b53 upstream.
eprobe_dyn_event_match() checks if the target event system in argv[0]
matches ep->event_system using strncmp(ep->event_system, argv[0], len).
However, if ep->event_system is longer than len (e.g. "eprobes" vs
"ep/event"), strncmp() still returns 0 because the first len characters
match.
Check that ep->event_system[len] is '\0' to ensure exact system name
matching.
Link: https://lore.kernel.org/all/178454235856.290363.14872590900774231133.stgit@devnote2/
Fixes: 7d5fda1c841f ("tracing: Fix event probe removal from dynamic events")
Cc: stable@vger.kernel.org
Assisted-by: Antigravity:gemini-3.5-flash
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
kernel/trace/trace_eprobe.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/kernel/trace/trace_eprobe.c
+++ b/kernel/trace/trace_eprobe.c
@@ -169,7 +169,8 @@ static bool eprobe_dyn_event_match(const
if (!slash)
return false;
- if (strncmp(ep->event_system, argv[0], slash - argv[0]))
+ if (strncmp(ep->event_system, argv[0], slash - argv[0]) ||
+ ep->event_system[slash - argv[0]] != '\0')
return false;
if (strcmp(ep->event_name, slash + 1))
return false;
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 495/675] tracing/probes: Avoid temporary buffer truncation in trace_probe_match_command_args()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (493 preceding siblings ...)
2026-07-30 14:13 ` [PATCH 6.18 494/675] tracing/eprobe: Fix exact system name matching in eprobe_dyn_event_match() Greg Kroah-Hartman
@ 2026-07-30 14:13 ` Greg Kroah-Hartman
2026-07-30 14:13 ` [PATCH 6.18 496/675] tracing/probes: Fix potential underflow in LEN_OR_ZERO macro Greg Kroah-Hartman
` (184 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:13 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Masami Hiramatsu (Google)
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Masami Hiramatsu (Google) <mhiramat@kernel.org>
commit 15f197856d68882af9416fc97516bb55079b7677 upstream.
In trace_probe_match_command_args(), a stack buffer buf[MAX_ARGSTR_LEN + 1]
(256 bytes) is used to format "<name>=<comm>". However, since name can
be up to 32 bytes (MAX_ARG_NAME_LEN) and comm up to 255 bytes
(MAX_ARGSTR_LEN), the formatted string can exceed 256 bytes and get
truncated by snprintf(), causing spurious argument matching failures.
Instead of formatting into a temporary buffer on stack, compare the
argument name, the '=' delimiter, and the comm expression directly.
Link: https://lore.kernel.org/all/178454233010.290363.10428767141343428804.stgit@devnote2/
Fixes: eb5bf81330a7 ("tracing/kprobe: Add per-probe delete from event")
Cc: stable@vger.kernel.org
Assisted-by: Antigravity:gemini-3.5-flash
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
kernel/trace/trace_probe.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)
--- a/kernel/trace/trace_probe.c
+++ b/kernel/trace/trace_probe.c
@@ -2344,16 +2344,17 @@ int trace_probe_compare_arg_type(struct
bool trace_probe_match_command_args(struct trace_probe *tp,
int argc, const char **argv)
{
- char buf[MAX_ARGSTR_LEN + 1];
int i;
if (tp->nr_args < argc)
return false;
for (i = 0; i < argc; i++) {
- snprintf(buf, sizeof(buf), "%s=%s",
- tp->args[i].name, tp->args[i].comm);
- if (strcmp(buf, argv[i]))
+ int len = strlen(tp->args[i].name);
+
+ if (strncmp(argv[i], tp->args[i].name, len) ||
+ argv[i][len] != '=' ||
+ strcmp(argv[i] + len + 1, tp->args[i].comm))
return false;
}
return true;
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 496/675] tracing/probes: Fix potential underflow in LEN_OR_ZERO macro
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (494 preceding siblings ...)
2026-07-30 14:13 ` [PATCH 6.18 495/675] tracing/probes: Avoid temporary buffer truncation in trace_probe_match_command_args() Greg Kroah-Hartman
@ 2026-07-30 14:13 ` Greg Kroah-Hartman
2026-07-30 14:13 ` [PATCH 6.18 497/675] tracing/probes: Prevent out-of-bounds write in __trace_probe_log_err() Greg Kroah-Hartman
` (183 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:13 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Masami Hiramatsu (Google)
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Masami Hiramatsu (Google) <mhiramat@kernel.org>
commit 8ce20bfba48902e1382187cd1a852f7cf3a1e739 upstream.
In __set_print_fmt(), LEN_OR_ZERO is defined as (len ? len - pos : 0).
If len is non-zero but smaller than pos, len - pos evaluates to a negative
integer. When passed as a size argument to snprintf(), this negative value
is cast to a large unsigned size_t, bypassing buffer size limits.
Ensure len > pos before subtracting to avoid integer underflow.
Link: https://lore.kernel.org/all/178454234934.290363.15247317871499514139.stgit@devnote2/
Fixes: 5bf652aaf46c ("tracing/probes: Integrate duplicate set_print_fmt()")
Cc: stable@vger.kernel.org
Assisted-by: Antigravity:gemini-3.5-flash
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
kernel/trace/trace_probe.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/kernel/trace/trace_probe.c
+++ b/kernel/trace/trace_probe.c
@@ -2018,7 +2018,7 @@ int traceprobe_update_arg(struct probe_a
}
/* When len=0, we just calculate the needed length */
-#define LEN_OR_ZERO (len ? len - pos : 0)
+#define LEN_OR_ZERO (len > pos ? len - pos : 0)
static int __set_print_fmt(struct trace_probe *tp, char *buf, int len,
enum probe_print_type ptype)
{
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 497/675] tracing/probes: Prevent out-of-bounds write in __trace_probe_log_err()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (495 preceding siblings ...)
2026-07-30 14:13 ` [PATCH 6.18 496/675] tracing/probes: Fix potential underflow in LEN_OR_ZERO macro Greg Kroah-Hartman
@ 2026-07-30 14:13 ` Greg Kroah-Hartman
2026-07-30 14:13 ` [PATCH 6.18 498/675] arm64: make huge_ptep_get handled unaligned addresses Greg Kroah-Hartman
` (182 subsequent siblings)
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From: Greg Kroah-Hartman @ 2026-07-30 14:13 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Masami Hiramatsu (Google)
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Masami Hiramatsu (Google) <mhiramat@kernel.org>
commit a9d6fb284039a5d3858a1d9f9a0d7e46cfb7c2d4 upstream.
If trace_probe_log.argc is 0 in __trace_probe_log_err(), the loop
constructing the command string will not execute and p will remain equal to
command. Writing to *(p - 1) will cause an out-of-bounds access before
command. This should not happen, but better to be treated.
Reject if trace_probe_log.argc is 0.
Link: https://lore.kernel.org/all/178454233992.290363.18323091580600697731.stgit@devnote2/
Fixes: ab105a4fb894 ("tracing: Use tracing error_log with probe events")
Cc: stable@vger.kernel.org
Assisted-by: Antigravity:gemini-3.5-flash
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
kernel/trace/trace_probe.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/kernel/trace/trace_probe.c
+++ b/kernel/trace/trace_probe.c
@@ -187,7 +187,7 @@ void __trace_probe_log_err(int offset, i
lockdep_assert_held(&dyn_event_ops_mutex);
- if (!trace_probe_log.argv)
+ if (!trace_probe_log.argv || !trace_probe_log.argc)
return;
/* Recalculate the length and allocate buffer */
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 498/675] arm64: make huge_ptep_get handled unaligned addresses
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (496 preceding siblings ...)
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@ 2026-07-30 14:13 ` Greg Kroah-Hartman
2026-07-30 14:13 ` [PATCH 6.18 499/675] arm64: syscall: Ensure saved x0 is kept in-sync with tracer updates Greg Kroah-Hartman
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From: Greg Kroah-Hartman @ 2026-07-30 14:13 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, David Hildenbrand (Arm), Dev Jain,
Muchun Song, Will Deacon
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Dev Jain <dev.jain@arm.com>
commit f73a8edc2ccc6ec72c37d5c578e7592d2e1f9922 upstream.
huge_ptep_get() can be handed a virtual address pointing to the middle
of a contpmd/contpte mapped hugetlb folio (examples of callers are
pagemap_hugetlb_range, page_mapped_in_vma).
The arm64 helper rewalks the pgtables in find_num_contig to answer
whether the huge pte we have maps a contpmd or a contpte hugetlb folio,
and returns CONT_PMDS or CONT_PTES, so that it can collect a/d bits over
the contiguous ptes. We can falsely return CONT_PTES instead of
CONT_PMDS if the addr is not aligned. On systems where CONT_PTES !=
CONT_PMDS (meaning page size is 16K), we could collect excess A/D bit
state, meaning extra work for the kernel. Even worse, we may iterate
beyond the PTE table and dereference a garbage ptep pointer to access
physical memory we don't own. Since the ptep pointer is a linear map
address, we may run off the end of the linear map or into a hole,
dereference a VA not mapped into the kernel pgtables and cause kernel
panic.
Fix this by aligning the pmdp pointer down to a contpmd base before
checking equality with the passed huge pte pointer, to correctly answer
whether the huge pte is the base of a contpmd block.
Fixes: 29cb80519689 ("arm64: hugetlb: Cleanup huge_pte size discovery mechanisms")
Cc: stable@vger.kernel.org
Acked-by: David Hildenbrand (Arm) <david@kernel.org>
Signed-off-by: Dev Jain <dev.jain@arm.com>
Acked-by: Muchun Song <muchun.song@linux.dev>
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/arm64/mm/hugetlbpage.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/arm64/mm/hugetlbpage.c
+++ b/arch/arm64/mm/hugetlbpage.c
@@ -91,7 +91,7 @@ static int find_num_contig(struct mm_str
p4dp = p4d_offset(pgdp, addr);
pudp = pud_offset(p4dp, addr);
pmdp = pmd_offset(pudp, addr);
- if ((pte_t *)pmdp == ptep) {
+ if ((pte_t *)PTR_ALIGN_DOWN(pmdp, sizeof(*pmdp) * CONT_PMDS) == ptep) {
*pgsize = PMD_SIZE;
return CONT_PMDS;
}
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 499/675] arm64: syscall: Ensure saved x0 is kept in-sync with tracer updates
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (497 preceding siblings ...)
2026-07-30 14:13 ` [PATCH 6.18 498/675] arm64: make huge_ptep_get handled unaligned addresses Greg Kroah-Hartman
@ 2026-07-30 14:13 ` Greg Kroah-Hartman
2026-07-30 14:13 ` [PATCH 6.18 500/675] Revert "arm64: syscall: Ensure saved x0 is kept in-sync with tracer updates" Greg Kroah-Hartman
` (180 subsequent siblings)
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From: Greg Kroah-Hartman @ 2026-07-30 14:13 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Kees Cook, Jinjie Ruan, Mark Rutland,
Yiqi Sun, Catalin Marinas, Will Deacon
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Will Deacon <will@kernel.org>
commit e057b94772328221405b067c3a85fe479b915dc8 upstream.
When seccomp support was originally added to arm64 in a1ae65b21941
("arm64: add seccomp support"), seccomp was erroneously called _before_
the ptrace syscall-enter-stop and therefore the tracer could trivially
manipulate the syscall register state after the seccomp check had
passed. This was subsequently fixed in a5cd110cb836 ("arm64/ptrace: run
seccomp after ptrace") by moving the seccomp check after the tracer has
run. Unfortunately, a decade later, that fix has been reported to be
incomplete.
On arm64, both the first argument to a syscall and its eventual return
value are allocated to register x0. In order to facilitate syscall
restarting and querying of syscall arguments on the syscall exit path,
the original value of x0 is stashed in 'struct pt_regs::orig_x0' early
during the syscall entry path and is returned for the first argument by
syscall_get_arguments(). Unlike 32-bit Arm, this stashed value is not
directly exposed via ptrace() and so changes to register x0 made by the
tracer on a syscall-enter-stop are not reflected in 'orig_x0'. This
means that seccomp, syscall tracepoints and audit can observe a stale
value for the register compared to the argument that will be observed by
the actual syscall.
Re-sync 'orig_x0' from x0 on the syscall entry path following a
potential ptrace stop (i.e. PTRACE_EVENTMSG_SYSCALL_ENTRY or
SECCOMP_RET_TRACE). This behaviour is limited to native tasks (because
compat tasks expose 'orig_r0' to ptrace) where the syscall is not being
skipped (because x0 is updated to hold the return value of -ENOSYS in
that case).
Cc: Kees Cook <kees@kernel.org>
Cc: Jinjie Ruan <ruanjinjie@huawei.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: stable@vger.kernel.org
Reported-by: Yiqi Sun <sunyiqixm@gmail.com>
Link: https://lore.kernel.org/all/20260529065444.1336608-1-sunyiqixm@gmail.com/
Suggested-by: Catalin Marinas <catalin.marinas@arm.com>
Fixes: a5cd110cb836 ("arm64/ptrace: run seccomp after ptrace")
Reviewed-by: Jinjie Ruan <ruanjinjie@huawei.com>
Tested-by: Jinjie Ruan <ruanjinjie@huawei.com>
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/arm64/kernel/ptrace.c | 29 +++++++++++++++++++++++++++++
1 file changed, 29 insertions(+)
--- a/arch/arm64/kernel/ptrace.c
+++ b/arch/arm64/kernel/ptrace.c
@@ -2362,6 +2362,21 @@ static void report_syscall(struct pt_reg
}
}
+static void update_syscall_orig_x0_after_ptrace(struct pt_regs *regs)
+{
+ /*
+ * Keep orig_x0 authoritative so that seccomp (via
+ * syscall_get_arguments()), audit and the restart path all see the same
+ * first argument the syscall is dispatched with, even if it has been
+ * updated by a tracer. Skip this for NO_SYSCALL (set either by the user
+ * or the tracer), as regs[0] holds the return value (see the comment in
+ * el0_svc_common()) and can be unwound using syscall_rollback().
+ * For compat tasks, orig_r0 is provided directly through GPR index 17.
+ */
+ if (!is_compat_task() && regs->syscallno != NO_SYSCALL)
+ regs->orig_x0 = regs->regs[0];
+}
+
int syscall_trace_enter(struct pt_regs *regs)
{
unsigned long flags = read_thread_flags();
@@ -2370,12 +2385,26 @@ int syscall_trace_enter(struct pt_regs *
report_syscall(regs, PTRACE_SYSCALL_ENTER);
if (flags & _TIF_SYSCALL_EMU)
return NO_SYSCALL;
+
+ /*
+ * Ensure ptrace changes to x0 during a regular
+ * syscall-enter-stop (PTRACE_SYSCALL) are visible to
+ * subsequent seccomp checks, tracepoints and audit.
+ */
+ update_syscall_orig_x0_after_ptrace(regs);
}
/* Do the secure computing after ptrace; failures should be fast. */
if (secure_computing() == -1)
return NO_SYSCALL;
+ /*
+ * Ensure tracer changes to x0 during seccomp ptrace exit
+ * processing (SECCOMP_RET_TRACE) are visible to tracepoints and
+ * audit.
+ */
+ update_syscall_orig_x0_after_ptrace(regs);
+
if (test_thread_flag(TIF_SYSCALL_TRACEPOINT))
trace_sys_enter(regs, regs->syscallno);
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 500/675] Revert "arm64: syscall: Ensure saved x0 is kept in-sync with tracer updates"
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (498 preceding siblings ...)
2026-07-30 14:13 ` [PATCH 6.18 499/675] arm64: syscall: Ensure saved x0 is kept in-sync with tracer updates Greg Kroah-Hartman
@ 2026-07-30 14:13 ` Greg Kroah-Hartman
2026-07-30 14:13 ` [PATCH 6.18 501/675] mptcp: decrement subflows counter on failed passive join Greg Kroah-Hartman
` (179 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:13 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Will Deacon
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Will Deacon <will@kernel.org>
commit 26b483d52417253d88a3a01262ac85914a7aec8e upstream.
This reverts commit e057b94772328221405b067c3a85fe479b915dc8.
Sashiko points out that updating 'orig_x0' after secure_computing()
has returned is too late to handle the case where a seccomp filter is
re-evaluated after initially returning SECCOMP_RET_TRACE. This means
that a tracer can manipulate the first argument of the syscall behind
seccomp's back.
For now, revert the initial fix and we'll have another crack at it soon.
Since the incorrect fix was cc'd to stable, do the same here with an
appropriate fixes tag.
Cc: stable@vger.kernel.org
Fixes: e057b9477232 ("arm64: syscall: Ensure saved x0 is kept in-sync with tracer updates")
Link: https://sashiko.dev/#/patchset/20260716120640.6590-1-will@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/arm64/kernel/ptrace.c | 29 -----------------------------
1 file changed, 29 deletions(-)
--- a/arch/arm64/kernel/ptrace.c
+++ b/arch/arm64/kernel/ptrace.c
@@ -2362,21 +2362,6 @@ static void report_syscall(struct pt_reg
}
}
-static void update_syscall_orig_x0_after_ptrace(struct pt_regs *regs)
-{
- /*
- * Keep orig_x0 authoritative so that seccomp (via
- * syscall_get_arguments()), audit and the restart path all see the same
- * first argument the syscall is dispatched with, even if it has been
- * updated by a tracer. Skip this for NO_SYSCALL (set either by the user
- * or the tracer), as regs[0] holds the return value (see the comment in
- * el0_svc_common()) and can be unwound using syscall_rollback().
- * For compat tasks, orig_r0 is provided directly through GPR index 17.
- */
- if (!is_compat_task() && regs->syscallno != NO_SYSCALL)
- regs->orig_x0 = regs->regs[0];
-}
-
int syscall_trace_enter(struct pt_regs *regs)
{
unsigned long flags = read_thread_flags();
@@ -2385,26 +2370,12 @@ int syscall_trace_enter(struct pt_regs *
report_syscall(regs, PTRACE_SYSCALL_ENTER);
if (flags & _TIF_SYSCALL_EMU)
return NO_SYSCALL;
-
- /*
- * Ensure ptrace changes to x0 during a regular
- * syscall-enter-stop (PTRACE_SYSCALL) are visible to
- * subsequent seccomp checks, tracepoints and audit.
- */
- update_syscall_orig_x0_after_ptrace(regs);
}
/* Do the secure computing after ptrace; failures should be fast. */
if (secure_computing() == -1)
return NO_SYSCALL;
- /*
- * Ensure tracer changes to x0 during seccomp ptrace exit
- * processing (SECCOMP_RET_TRACE) are visible to tracepoints and
- * audit.
- */
- update_syscall_orig_x0_after_ptrace(regs);
-
if (test_thread_flag(TIF_SYSCALL_TRACEPOINT))
trace_sys_enter(regs, regs->syscallno);
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 501/675] mptcp: decrement subflows counter on failed passive join
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (499 preceding siblings ...)
2026-07-30 14:13 ` [PATCH 6.18 500/675] Revert "arm64: syscall: Ensure saved x0 is kept in-sync with tracer updates" Greg Kroah-Hartman
@ 2026-07-30 14:13 ` Greg Kroah-Hartman
2026-07-30 14:13 ` [PATCH 6.18 502/675] mptcp: only set DATA_FIN when a mapping is present Greg Kroah-Hartman
` (178 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:13 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Chenguang Zhao,
Matthieu Baerts (NGI0), Jakub Kicinski
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Chenguang Zhao <zhaochenguang@kylinos.cn>
commit f3ca0ee2cc308e33896536789cbc5f3a12ca7b30 upstream.
mptcp_pm_allow_new_subflow() increments extra_subflows before
__mptcp_finish_join() on the passive MP_JOIN path.
In case of race conditions, the subflow is dropped without calling
mptcp_close_ssk(), so the counter is not rolled back.
Call mptcp_pm_close_subflow() when the join completion fails to
decrement the subflows counter.
Fixes: 10f6d46c943d ("mptcp: fix race between MP_JOIN and close")
Cc: stable@vger.kernel.org
Signed-off-by: Chenguang Zhao <zhaochenguang@kylinos.cn>
Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://patch.msgid.link/20260722-net-mptcp-misc-fixes-7-2-rc5-v1-1-6fb595bc86ef@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/mptcp/protocol.c | 1 +
1 file changed, 1 insertion(+)
--- a/net/mptcp/protocol.c
+++ b/net/mptcp/protocol.c
@@ -3758,6 +3758,7 @@ bool mptcp_finish_join(struct sock *ssk)
mptcp_data_unlock(parent);
if (!ret) {
+ mptcp_pm_close_subflow(msk);
err_prohibited:
subflow->reset_reason = MPTCP_RST_EPROHIBIT;
return false;
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 502/675] mptcp: only set DATA_FIN when a mapping is present
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (500 preceding siblings ...)
2026-07-30 14:13 ` [PATCH 6.18 501/675] mptcp: decrement subflows counter on failed passive join Greg Kroah-Hartman
@ 2026-07-30 14:13 ` Greg Kroah-Hartman
2026-07-30 14:13 ` [PATCH 6.18 503/675] mptcp: pm: userspace: fix use-after-free in get_local_id Greg Kroah-Hartman
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From: Greg Kroah-Hartman @ 2026-07-30 14:13 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Paolo Abeni, Michael Bommarito,
Matthieu Baerts (NGI0), Jakub Kicinski
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Michael Bommarito <michael.bommarito@gmail.com>
commit b2ff91b752b0d85e8815e7f44fd85205c4268094 upstream.
mptcp_get_options() clears only the status group of struct
mptcp_options_received; data_seq, subflow_seq and data_len are filled in
by mptcp_parse_option() exclusively inside the DSS mapping block, which
runs only when the DSS M (mapping present) bit is set.
A peer can send a DSS option with the DATA_FIN flag set but the mapping
bit clear. The parser then records mp_opt->data_fin while leaving
data_len and data_seq uninitialized. For a zero-length segment
mptcp_incoming_options() evaluates
if (mp_opt.data_fin && mp_opt.data_len == 1 &&
mptcp_update_rcv_data_fin(msk, mp_opt.data_seq, mp_opt.dsn64))
which reads the uninitialized data_len and data_seq; KMSAN reports an
uninit-value in mptcp_incoming_options(). The stale data_seq can also be
fed into the receive-side DATA_FIN sequence tracking.
Record the DATA_FIN flag only when the DSS option carries a mapping, so
data_fin is never set without data_seq and data_len also being present.
data_fin is part of the status group that mptcp_get_options() clears up
front, so on the no-map path it stays zero and the zero-length DATA_FIN
branch is simply skipped. A DATA_FIN is always transmitted together with
a mapping (mptcp_write_data_fin() sets use_map along with data_seq and
data_len), so legitimate DATA_FIN handling is unaffected.
Move the pr_debug() that logs the parsed DSS flags below the mapping
block, so it reports the final data_fin value instead of the stale one
it would otherwise print before the assignment.
Fixes: 43b54c6ee382 ("mptcp: Use full MPTCP-level disconnect state machine")
Suggested-by: Paolo Abeni <pabeni@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Michael Bommarito <michael.bommarito@gmail.com>
Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://patch.msgid.link/20260709191925.2811195-1-michael.bommarito@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/mptcp/options.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
--- a/net/mptcp/options.c
+++ b/net/mptcp/options.c
@@ -157,17 +157,11 @@ static void mptcp_parse_option(const str
ptr++;
flags = (*ptr++) & MPTCP_DSS_FLAG_MASK;
- mp_opt->data_fin = (flags & MPTCP_DSS_DATA_FIN) != 0;
mp_opt->dsn64 = (flags & MPTCP_DSS_DSN64) != 0;
mp_opt->use_map = (flags & MPTCP_DSS_HAS_MAP) != 0;
mp_opt->ack64 = (flags & MPTCP_DSS_ACK64) != 0;
mp_opt->use_ack = (flags & MPTCP_DSS_HAS_ACK);
- pr_debug("data_fin=%d dsn64=%d use_map=%d ack64=%d use_ack=%d\n",
- mp_opt->data_fin, mp_opt->dsn64,
- mp_opt->use_map, mp_opt->ack64,
- mp_opt->use_ack);
-
expected_opsize = TCPOLEN_MPTCP_DSS_BASE;
if (mp_opt->use_ack) {
@@ -178,12 +172,18 @@ static void mptcp_parse_option(const str
}
if (mp_opt->use_map) {
+ mp_opt->data_fin = (flags & MPTCP_DSS_DATA_FIN) != 0;
if (mp_opt->dsn64)
expected_opsize += TCPOLEN_MPTCP_DSS_MAP64;
else
expected_opsize += TCPOLEN_MPTCP_DSS_MAP32;
}
+ pr_debug("data_fin=%d dsn64=%d use_map=%d ack64=%d use_ack=%d\n",
+ mp_opt->data_fin, mp_opt->dsn64,
+ mp_opt->use_map, mp_opt->ack64,
+ mp_opt->use_ack);
+
/* Always parse any csum presence combination, we will enforce
* RFC 8684 Section 3.3.0 checks later in subflow_data_ready
*/
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 503/675] mptcp: pm: userspace: fix use-after-free in get_local_id
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (501 preceding siblings ...)
2026-07-30 14:13 ` [PATCH 6.18 502/675] mptcp: only set DATA_FIN when a mapping is present Greg Kroah-Hartman
@ 2026-07-30 14:13 ` Greg Kroah-Hartman
2026-07-30 14:13 ` [PATCH 6.18 504/675] afs: Fix afs_edit_dir_remove() to get, not find, block 0 Greg Kroah-Hartman
` (176 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:13 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Geliang Tang, Xuanqiang Luo,
Matthieu Baerts (NGI0), Jakub Kicinski
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Geliang Tang <tanggeliang@kylinos.cn>
commit 9bc6d5e4ca9f3cbb41d43400b3a31cb0403796c9 upstream.
In mptcp_pm_userspace_get_local_id(), the address entry is looked up under
spinlock, but its id is read after dropping the lock. A concurrent deletion
can free the entry between the unlock and the read, leading to UAF.
The race window is narrow. It was reproduced only with a locally
constructed stress test that repeatedly overlaps an MP_JOIN SYN with a
MPTCP_PM_CMD_SUBFLOW_DESTROY request.
However, the KASAN report below confirms that the race is reachable:
[ 666.319376] BUG: KASAN: slab-use-after-free in mptcp_userspace_pm_get_local_id+0x1dc/0x1f0
[ 666.319386] Read of size 1 at addr ffff888124845610 by task swapper/0/0
...
[ 666.319401] Call Trace:
[ 666.319405] <IRQ>
[ 666.319408] dump_stack_lvl+0x53/0x70
[ 666.319412] print_address_description.constprop.0+0x2c/0x3b0
[ 666.319418] print_report+0xbe/0x2b0
[ 666.319421] ? mptcp_userspace_pm_get_local_id+0x1dc/0x1f0
[ 666.319423] kasan_report+0xce/0x100
[ 666.319426] ? mptcp_userspace_pm_get_local_id+0x1dc/0x1f0
[ 666.319429] mptcp_userspace_pm_get_local_id+0x1dc/0x1f0
[ 666.319433] mptcp_pm_get_local_id+0x371/0x440
...
[ 666.319821] Allocated by task 45539:
[ 666.319844] kasan_save_stack+0x33/0x60
[ 666.319855] kasan_save_track+0x14/0x30
[ 666.319858] __kasan_kmalloc+0x8f/0xa0
[ 666.319863] __kmalloc_noprof+0x1e7/0x520
[ 666.319867] sock_kmalloc+0xdf/0x130
[ 666.319885] sock_kmemdup+0x1b/0x40
[ 666.319888] mptcp_userspace_pm_append_new_local_addr+0x261/0x500
[ 666.319910] mptcp_pm_nl_announce_doit+0x16a/0x610
...
[ 666.319967] Freed by task 45560:
[ 666.319988] kasan_save_stack+0x33/0x60
[ 666.319991] kasan_save_track+0x14/0x30
[ 666.319994] kasan_save_free_info+0x3b/0x60
[ 666.319998] __kasan_slab_free+0x43/0x70
[ 666.320000] kfree+0x166/0x440
[ 666.320003] sock_kfree_s+0x1d/0x50
[ 666.320007] mptcp_userspace_pm_delete_local_addr.isra.0+0x157/0x200
[ 666.320011] mptcp_pm_nl_subflow_destroy_doit+0x51d/0xea0
Fix by copying the id into a local variable while still holding the lock,
and use -1 as a "not found" sentinel.
Fixes: f012d796a6de ("mptcp: check addrs list in userspace_pm_get_local_id")
Cc: stable@vger.kernel.org
Signed-off-by: Geliang Tang <tanggeliang@kylinos.cn>
Tested-by: Xuanqiang Luo <luoxuanqiang@kylinos.cn>
Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://patch.msgid.link/20260722-net-mptcp-misc-fixes-7-2-rc5-v1-2-6fb595bc86ef@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/mptcp/pm_userspace.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
--- a/net/mptcp/pm_userspace.c
+++ b/net/mptcp/pm_userspace.c
@@ -132,12 +132,15 @@ int mptcp_userspace_pm_get_local_id(stru
__be16 msk_sport = ((struct inet_sock *)
inet_sk((struct sock *)msk))->inet_sport;
struct mptcp_pm_addr_entry *entry;
+ int id;
spin_lock_bh(&msk->pm.lock);
entry = mptcp_userspace_pm_lookup_addr(msk, &skc->addr);
+ id = entry ? entry->addr.id : -1;
spin_unlock_bh(&msk->pm.lock);
- if (entry)
- return entry->addr.id;
+
+ if (id != -1)
+ return id;
if (skc->addr.port == msk_sport)
skc->addr.port = 0;
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 504/675] afs: Fix afs_edit_dir_remove() to get, not find, block 0
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (502 preceding siblings ...)
2026-07-30 14:13 ` [PATCH 6.18 503/675] mptcp: pm: userspace: fix use-after-free in get_local_id Greg Kroah-Hartman
@ 2026-07-30 14:13 ` Greg Kroah-Hartman
2026-07-30 14:13 ` [PATCH 6.18 505/675] mm/kmemleak: fix checksum computation for per-cpu objects Greg Kroah-Hartman
` (175 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:13 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, David Howells, Marc Dionne,
linux-afs, linux-fsdevel, Christian Brauner (Amutable)
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: David Howells <dhowells@redhat.com>
commit 62d9853aa4ce6e9797b6949804891be14b219752 upstream.
Fix afs_edit_dir_remove() to use afs_dir_get_block() to get block 0 rather
than afs_dir_find_block() as the latter caches the found block in the
afs_dir_iter and may[*] switch out the page it's on if another
afs_dir_find_block() is done. This parallels what afs_edit_dir_add() does.
[*] There's more than one block per page.
Fixes: a5b5beebcf96 ("afs: Use the contained hashtable to search a directory")
Closes: https://sashiko.dev/#/patchset/20260706153408.1231650-1-dhowells%40redhat.com
Signed-off-by: David Howells <dhowells@redhat.com>
Link: https://patch.msgid.link/2380759.1783956175@warthog.procyon.org.uk
cc: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org
cc: linux-fsdevel@vger.kernel.org
cc: stable@vger.kernel.org
Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/afs/dir_edit.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/fs/afs/dir_edit.c
+++ b/fs/afs/dir_edit.c
@@ -415,7 +415,7 @@ void afs_edit_dir_remove(struct afs_vnod
if (!afs_dir_init_iter(&iter, name))
return;
- meta = afs_dir_find_block(&iter, 0);
+ meta = afs_dir_get_block(&iter, 0);
if (!meta)
return;
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 505/675] mm/kmemleak: fix checksum computation for per-cpu objects
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (503 preceding siblings ...)
2026-07-30 14:13 ` [PATCH 6.18 504/675] afs: Fix afs_edit_dir_remove() to get, not find, block 0 Greg Kroah-Hartman
@ 2026-07-30 14:13 ` Greg Kroah-Hartman
2026-07-30 14:13 ` [PATCH 6.18 506/675] mm/huge_memory: set PG_has_hwpoisoned only after new folio head is established Greg Kroah-Hartman
` (174 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:13 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Breno Leitao, Catalin Marinas,
Pavel Tikhomirov, Andrew Morton
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Breno Leitao <leitao@debian.org>
commit 79c37ae3733e93d9d8ea12ecb44f717e61439024 upstream.
The per-cpu object checksum folds each CPU's CRC together with XOR and
seeds every CRC with 0. Both choices make update_checksum() miss content
changes:
- XOR is self-cancelling, so equal contents on two CPUs cancel out and
simultaneous identical changes leave the checksum unchanged.
- crc32(0, ...) over all-zero content is 0, so a freshly allocated,
zeroed per-cpu area checksums to 0, matching the initial value, and
the object is never seen to change.
See discussions at [0].
When update_checksum() wrongly reports an actively modified object as
unchanged, kmemleak stops greying it for an extra scan and can report a
live per-cpu object as a leak.
Fold the per-cpu CRC as a single rolling checksum across all CPUs and
initialise the object checksum to ~0 so the first computed value always
registers as a change, even for content that hashes to 0.
reset_checksum() is seeded the same way.
Link: https://lore.kernel.org/all/akfYImSNDh3OjIfR@gmail.com [0]
Link: https://lore.kernel.org/20260703-kmemleak_checksum-v1-1-5e0ab7d6966f@debian.org
Fixes: 6c99d4eb7c5e ("kmemleak: enable tracking for percpu pointers")
Signed-off-by: Breno Leitao <leitao@debian.org>
Co-developed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Reviewed-by: Pavel Tikhomirov <ptikhomirov@virtuozzo.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
mm/kmemleak.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
--- a/mm/kmemleak.c
+++ b/mm/kmemleak.c
@@ -676,7 +676,7 @@ static struct kmemleak_object *__alloc_o
atomic_set(&object->use_count, 1);
object->excess_ref = 0;
object->count = 0; /* white color initially */
- object->checksum = 0;
+ object->checksum = ~0;
object->del_state = 0;
/* task information */
@@ -972,7 +972,7 @@ static void reset_checksum(unsigned long
}
raw_spin_lock_irqsave(&object->lock, flags);
- object->checksum = 0;
+ object->checksum = ~0;
raw_spin_unlock_irqrestore(&object->lock, flags);
put_object(object);
}
@@ -1401,7 +1401,8 @@ static bool update_checksum(struct kmeml
for_each_possible_cpu(cpu) {
void *ptr = per_cpu_ptr((void __percpu *)object->pointer, cpu);
- object->checksum ^= crc32(0, kasan_reset_tag((void *)ptr), object->size);
+ object->checksum = crc32(object->checksum,
+ kasan_reset_tag((void *)ptr), object->size);
}
} else {
object->checksum = crc32(0, kasan_reset_tag((void *)object->pointer), object->size);
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 506/675] mm/huge_memory: set PG_has_hwpoisoned only after new folio head is established
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (504 preceding siblings ...)
2026-07-30 14:13 ` [PATCH 6.18 505/675] mm/kmemleak: fix checksum computation for per-cpu objects Greg Kroah-Hartman
@ 2026-07-30 14:13 ` Greg Kroah-Hartman
2026-07-30 14:13 ` [PATCH 6.18 507/675] sctp: dont free the ASCONFs own transport in DEL-IP processing Greg Kroah-Hartman
` (173 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:13 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Rik van Riel, Zi Yan,
David Hildenbrand (Arm), Lance Yang, Lorenzo Stoakes, Baolin Wang,
Barry Song, Dev Jain, Liam R. Howlett, Nico Pache, Ryan Roberts,
Yang Shi, Andrew Morton
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Rik van Riel <riel@surriel.com>
commit e1cd30eceb6908fc13bebce41283b885d71ee8d6 upstream.
__split_folio_to_order() copies the hwpoison state onto each new sub-folio
while splitting a folio to a non-zero order. It does so via
if (handle_hwpoison && page_range_has_hwpoisoned(new_head, new_nr_pages))
folio_set_has_hwpoisoned(new_folio);
*before* clear_compound_head(new_head)/prep_compound_page(new_head, ...)
turns @new_head from a tail page into a proper folio head.
PG_has_hwpoisoned is a FOLIO_SECOND_PAGE flag, so
folio_set_has_hwpoisoned() resolves to folio_flags(folio, 1). With the
new compound_info-based page-flags layout, folio_flags() asserts the page
is not a tail:
VM_BUG_ON_PGFLAGS(page->compound_info & 1, page);
VM_BUG_ON_PGFLAGS(n > 0 && !test_bit(PG_head, &page->flags.f), page);
At the current call site @new_head still has the tail marker
(compound_info bit 0 set, PG_head clear), so on CONFIG_DEBUG_VM kernels
this hits:
kernel BUG at include/linux/page-flags.h:354
folio_flags+0x82
folio_set_has_hwpoisoned
__split_folio_to_order
__split_unmapped_folio
__folio_split
truncate_inode_partial_folio (shmem hole-punch / MADV_REMOVE)
Reproduced by syzkaller: hwpoison-inject a few subpages of a large shmem
folio, then MADV_REMOVE (fallocate punch hole) on the same range, which
splits the partial folio to a non-zero order.
memory_failure() tries to split the poisoned folio to order 0 first, but
that split is best-effort; when it fails the folio is left large with
PG_has_hwpoisoned set, the case fa5a06170036 added this hwpoison copying
for.
Move the folio_set_has_hwpoisoned() call to after
clear_compound_head()/prep_compound_page(), where @new_folio is a real
order-new_order head folio (handle_hwpoison implies new_order != 0, so a
second page always exists). The flag still lands on the same struct page
(page[1] of the new folio); only the ordering relative to compound-head
setup changes, satisfying the FOLIO_SECOND_PAGE precondition.
Link: https://lore.kernel.org/20260701174235.3173401-1-riel@surriel.com
Fixes: fa5a06170036 ("mm/huge_memory: preserve PG_has_hwpoisoned if a folio is split to >0 order")
Signed-off-by: Rik van Riel <riel@surriel.com>
Assisted-by: Claude:claude-opus-4-8
Reviewed-by: Zi Yan <ziy@nvidia.com>
Acked-by: David Hildenbrand (Arm) <david@kernel.org>
Tested-by: Lance Yang <lance.yang@linux.dev>
Reviewed-by: Lorenzo Stoakes <ljs@kernel.org>
Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Barry Song <baohua@kernel.org>
Cc: Dev Jain <dev.jain@arm.com>
Cc: Lance Yang <lance.yang@linux.dev>
Cc: Liam R. Howlett <liam@infradead.org>
Cc: Nico Pache <npache@redhat.com>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Cc: Yang Shi <yang@os.amperecomputing.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
mm/huge_memory.c | 12 ++++++++----
1 file changed, 8 insertions(+), 4 deletions(-)
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -3344,10 +3344,6 @@ static void __split_folio_to_order(struc
(1L << PG_dirty) |
LRU_GEN_MASK | LRU_REFS_MASK));
- if (handle_hwpoison &&
- page_range_has_hwpoisoned(new_head, new_nr_pages))
- folio_set_has_hwpoisoned(new_folio);
-
new_folio->mapping = folio->mapping;
new_folio->index = folio->index + i;
@@ -3378,6 +3374,14 @@ static void __split_folio_to_order(struc
folio_set_large_rmappable(new_folio);
}
+ /*
+ * PG_has_hwpoisoned is on the 2nd page, so set it after
+ * the compound head is prepped.
+ */
+ if (handle_hwpoison &&
+ page_range_has_hwpoisoned(new_head, new_nr_pages))
+ folio_set_has_hwpoisoned(new_folio);
+
if (folio_test_young(folio))
folio_set_young(new_folio);
if (folio_test_idle(folio))
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 507/675] sctp: dont free the ASCONFs own transport in DEL-IP processing
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (505 preceding siblings ...)
2026-07-30 14:13 ` [PATCH 6.18 506/675] mm/huge_memory: set PG_has_hwpoisoned only after new folio head is established Greg Kroah-Hartman
@ 2026-07-30 14:13 ` Greg Kroah-Hartman
2026-07-30 14:13 ` [PATCH 6.18 508/675] sctp: avoid auth_enable sysctl UAF during netns teardown Greg Kroah-Hartman
` (172 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:13 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, stable, Jun Yang, Xin Long,
Jakub Kicinski
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jun Yang <junvyyang@tencent.com>
commit 9b2854f86f0b56e9027d68e7a3fc909d1a9b566f upstream.
sctp_process_asconf() caches the transport the ASCONF chunk is processed
against in asconf->transport (== chunk->transport, set once in sctp_rcv()).
For an ASCONF located through its Address Parameter by
__sctp_rcv_asconf_lookup(), that cached transport corresponds to the
Address Parameter, which need not be the packet's source address.
sctp_process_asconf_param() rejects a DEL-IP for the packet source address
(ADDIP D8, SCTP_ERROR_DEL_SRC_IP), but nothing protects asconf->transport.
A single ASCONF can therefore carry, in order:
[Address Parameter L] [DEL-IP L] [DEL-IP 0.0.0.0]
where L differs from the source. The DEL-IP for L passes the D8 check and
calls sctp_assoc_rm_peer() on the transport that asconf->transport still
points at, freeing it (RCU-deferred). The following wildcard DEL-IP then
reuses the now-dangling asconf->transport in sctp_assoc_set_primary() and
sctp_assoc_del_nonprimary_peers(): set_primary() dereferences the freed
transport (->ipaddr, ->state) and plants the dangling pointer into
asoc->peer.primary_path / active_path, and del_nonprimary_peers(), keeping
only the pointer that is no longer on the list, removes every real
transport, leaving the association with a transport_count of 0 and
primary_path/active_path pointing at freed memory.
Reject a DEL-IP that targets the transport the ASCONF is being processed
against, mirroring the existing source-address guard, so the wildcard
branch can never reuse a freed transport.
Fixes: 42e30bf3463c ("[SCTP]: Handle the wildcard ADD-IP Address parameter")
Cc: stable@kernel.org
Signed-off-by: Jun Yang <junvyyang@tencent.com>
Acked-by: Xin Long <lucien.xin@gmail.com>
Link: https://patch.msgid.link/tencent_73762ED1DF08CC9D5F5F61954B01350CFE0A@qq.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/sctp/sm_make_chunk.c | 6 ++++++
1 file changed, 6 insertions(+)
--- a/net/sctp/sm_make_chunk.c
+++ b/net/sctp/sm_make_chunk.c
@@ -3153,6 +3153,12 @@ static __be16 sctp_process_asconf_param(
if (!peer)
return SCTP_ERROR_DNS_FAILED;
+ /* Don't free asconf->transport; a later wildcard DEL-IP
+ * parameter reuses it.
+ */
+ if (peer == asconf->transport)
+ return SCTP_ERROR_REQ_REFUSED;
+
sctp_assoc_rm_peer(asoc, peer);
break;
case SCTP_PARAM_SET_PRIMARY:
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 508/675] sctp: avoid auth_enable sysctl UAF during netns teardown
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (506 preceding siblings ...)
2026-07-30 14:13 ` [PATCH 6.18 507/675] sctp: dont free the ASCONFs own transport in DEL-IP processing Greg Kroah-Hartman
@ 2026-07-30 14:13 ` Greg Kroah-Hartman
2026-07-30 14:13 ` [PATCH 6.18 509/675] sctp: close UDP tunnel sockets " Greg Kroah-Hartman
` (171 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:13 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Yuan Tan, Yifan Wu, Juefei Pu,
Xin Liu, Qi Tang, Zhiling Zou, Ren Wei, Xin Long, Jakub Kicinski
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Zhiling Zou <roxy520tt@gmail.com>
commit f8d5e7846025f4ab15a461235f8ebae9094a361a upstream.
proc_sctp_do_auth() updates the SCTP control socket after changing
net.sctp.auth_enable. The handler gets the per-net SCTP state from
ctl->data, so an already opened sysctl file can still target a network
namespace while that namespace is being torn down.
SCTP previously registered its per-net sysctls from sctp_defaults_init(),
while the control socket is created later from sctp_ctrlsock_init(). This
exposed a window during initialization where auth_enable was writable
before net->sctp.ctl_sock existed, and a teardown window where auth_enable
stayed writable after inet_ctl_sock_destroy() had released the control
socket.
Move the per-net SCTP sysctl registration into sctp_ctrlsock_init() after
sctp_ctl_sock_init() succeeds, and unregister the sysctl table before
destroying the control socket in sctp_ctrlsock_exit(). If sysctl
registration fails after the control socket was created, destroy the
control socket in the same init path.
Make sctp_sysctl_net_unregister() tolerate a missing header and clear the
saved pointer so init-error and exit paths can safely share the unregister
helper.
Fixes: 15649fd5415e ("sctp: sysctl: auth_enable: avoid using current->nsproxy")
Cc: stable@vger.kernel.org
Reported-by: Yuan Tan <yuantan098@gmail.com>
Reported-by: Yifan Wu <yifanwucs@gmail.com>
Reported-by: Juefei Pu <tomapufckgml@gmail.com>
Reported-by: Xin Liu <bird@lzu.edu.cn>
Co-developed-by: Qi Tang <tpluszz77@gmail.com>
Signed-off-by: Qi Tang <tpluszz77@gmail.com>
Signed-off-by: Zhiling Zou <roxy520tt@gmail.com>
Signed-off-by: Ren Wei <n05ec@lzu.edu.cn>
Acked-by: Xin Long <lucien.xin@gmail.com>
Link: https://patch.msgid.link/390cd5e91ed60eea27b0b64d0468301a9e73b808.1784033357.git.roxy520tt@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/sctp/protocol.c | 20 ++++++++++++--------
net/sctp/sysctl.c | 9 +++++++--
2 files changed, 19 insertions(+), 10 deletions(-)
--- a/net/sctp/protocol.c
+++ b/net/sctp/protocol.c
@@ -1410,10 +1410,6 @@ static int __net_init sctp_defaults_init
net->sctp.l3mdev_accept = 1;
#endif
- status = sctp_sysctl_net_register(net);
- if (status)
- goto err_sysctl_register;
-
/* Allocate and initialise sctp mibs. */
status = init_sctp_mibs(net);
if (status)
@@ -1447,8 +1443,6 @@ err_init_proc:
cleanup_sctp_mibs(net);
#endif
err_init_mibs:
- sctp_sysctl_net_unregister(net);
-err_sysctl_register:
return status;
}
@@ -1463,7 +1457,6 @@ static void __net_exit sctp_defaults_exi
net->sctp.proc_net_sctp = NULL;
#endif
cleanup_sctp_mibs(net);
- sctp_sysctl_net_unregister(net);
}
static struct pernet_operations sctp_defaults_ops = {
@@ -1477,16 +1470,27 @@ static int __net_init sctp_ctrlsock_init
/* Initialize the control inode/socket for handling OOTB packets. */
status = sctp_ctl_sock_init(net);
- if (status)
+ if (status) {
pr_err("Failed to initialize the SCTP control sock\n");
+ return status;
+ }
+
+ status = sctp_sysctl_net_register(net);
+ if (status) {
+ inet_ctl_sock_destroy(net->sctp.ctl_sock);
+ net->sctp.ctl_sock = NULL;
+ }
return status;
}
static void __net_exit sctp_ctrlsock_exit(struct net *net)
{
+ sctp_sysctl_net_unregister(net);
+
/* Free the control endpoint. */
inet_ctl_sock_destroy(net->sctp.ctl_sock);
+ net->sctp.ctl_sock = NULL;
}
static struct pernet_operations sctp_ctrlsock_ops = {
--- a/net/sctp/sysctl.c
+++ b/net/sctp/sysctl.c
@@ -615,11 +615,16 @@ int sctp_sysctl_net_register(struct net
void sctp_sysctl_net_unregister(struct net *net)
{
+ struct ctl_table_header *header = net->sctp.sysctl_header;
const struct ctl_table *table;
- table = net->sctp.sysctl_header->ctl_table_arg;
- unregister_net_sysctl_table(net->sctp.sysctl_header);
+ if (!header)
+ return;
+
+ table = header->ctl_table_arg;
+ unregister_net_sysctl_table(header);
kfree(table);
+ net->sctp.sysctl_header = NULL;
}
static struct ctl_table_header *sctp_sysctl_header;
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 509/675] sctp: close UDP tunnel sockets during netns teardown
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (507 preceding siblings ...)
2026-07-30 14:13 ` [PATCH 6.18 508/675] sctp: avoid auth_enable sysctl UAF during netns teardown Greg Kroah-Hartman
@ 2026-07-30 14:13 ` Greg Kroah-Hartman
2026-07-30 14:14 ` [PATCH 6.18 510/675] ceph: add owner/capability checks for CEPH_IOC_SET_LAYOUT* Greg Kroah-Hartman
` (170 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:13 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Sashiko, Zhiling Zou, Ren Wei,
Xin Long, Jakub Kicinski
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Zhiling Zou <roxy520tt@gmail.com>
commit ffb2bd7ade36ec4da32c46a6eddbf4515316d08c upstream.
proc_sctp_do_udp_port() starts per-net SCTP UDP tunneling sockets when
net.sctp.udp_port is set, and stops/restarts them when the sysctl value
changes. The netns exit path does not stop these sockets, so a namespace
can be torn down while its SCTP UDP tunnel sockets are still installed.
Close the UDP tunnel sockets from sctp_ctrlsock_exit() after unregistering
the per-net sysctl table. This prevents new sysctl writes from racing in
while the sockets are being released, and closes the sockets before the
control socket is destroyed.
Fixes: 046c052b475e ("sctp: enable udp tunneling socks")
Cc: stable@vger.kernel.org
Reported-by: Sashiko <sashiko-bot@kernel.org>
Closes: https://sashiko.dev/#/patchset/b9f1f02b0780ad6a719e2413f5f0bb8eb7702d94.1782585631.git.roxy520tt%40gmail.com
Signed-off-by: Zhiling Zou <roxy520tt@gmail.com>
Signed-off-by: Ren Wei <n05ec@lzu.edu.cn>
Acked-by: Xin Long <lucien.xin@gmail.com>
Link: https://patch.msgid.link/6dab75f22855cb219e2e30a5497cab03b970ab91.1784033357.git.roxy520tt@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/sctp/protocol.c | 1 +
1 file changed, 1 insertion(+)
--- a/net/sctp/protocol.c
+++ b/net/sctp/protocol.c
@@ -1487,6 +1487,7 @@ static int __net_init sctp_ctrlsock_init
static void __net_exit sctp_ctrlsock_exit(struct net *net)
{
sctp_sysctl_net_unregister(net);
+ sctp_udp_sock_stop(net);
/* Free the control endpoint. */
inet_ctl_sock_destroy(net->sctp.ctl_sock);
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 510/675] ceph: add owner/capability checks for CEPH_IOC_SET_LAYOUT*
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (508 preceding siblings ...)
2026-07-30 14:13 ` [PATCH 6.18 509/675] sctp: close UDP tunnel sockets " Greg Kroah-Hartman
@ 2026-07-30 14:14 ` Greg Kroah-Hartman
2026-07-30 17:40 ` Ilya Dryomov
2026-07-30 14:14 ` [PATCH 6.18 511/675] ceph: fix pre-auth out-of-bounds read on snaptrace in ceph_handle_caps() Greg Kroah-Hartman
` (169 subsequent siblings)
679 siblings, 1 reply; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:14 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Max Kellermann, Xiubo Li,
Ilya Dryomov
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Max Kellermann <max.kellermann@ionos.com>
commit cee38bbf5556a8e0a232ccae41649580827d7806 upstream.
These permission checks were already missing in the initial
impementation of these ioctls. This Ceph allows any user who owns a
file descriptor to manipulate the layout of any file, even if they
don't have write permissions.
It might be a good idea to guard other ioctls with permission checks
as well or even disallow regular users (even if they own the file) to
manipulate layout settings completely, as this may be abused to DoS
the Ceph servers, but right now, I find it most urgent to have setter
checks at all.
Cc: stable@vger.kernel.org
Fixes: 8f4e91dee2a2 ("ceph: ioctls")
Signed-off-by: Max Kellermann <max.kellermann@ionos.com>
Reviewed-by: Xiubo Li <xiubo.li@clyso.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/ceph/ioctl.c | 6 ++++++
1 file changed, 6 insertions(+)
--- a/fs/ceph/ioctl.c
+++ b/fs/ceph/ioctl.c
@@ -72,6 +72,9 @@ static long ceph_ioctl_set_layout(struct
struct ceph_ioctl_layout nl;
int err;
+ if (!inode_owner_or_capable(&nop_mnt_idmap, inode))
+ return -EACCES;
+
if (copy_from_user(&l, arg, sizeof(l)))
return -EFAULT;
@@ -142,6 +145,9 @@ static long ceph_ioctl_set_layout_policy
int err;
struct ceph_mds_client *mdsc = ceph_sb_to_fs_client(inode->i_sb)->mdsc;
+ if (!inode_owner_or_capable(&nop_mnt_idmap, inode))
+ return -EACCES;
+
/* copy and validate */
if (copy_from_user(&l, arg, sizeof(l)))
return -EFAULT;
^ permalink raw reply [flat|nested] 682+ messages in thread* Re: [PATCH 6.18 510/675] ceph: add owner/capability checks for CEPH_IOC_SET_LAYOUT*
2026-07-30 14:14 ` [PATCH 6.18 510/675] ceph: add owner/capability checks for CEPH_IOC_SET_LAYOUT* Greg Kroah-Hartman
@ 2026-07-30 17:40 ` Ilya Dryomov
0 siblings, 0 replies; 682+ messages in thread
From: Ilya Dryomov @ 2026-07-30 17:40 UTC (permalink / raw)
To: Greg Kroah-Hartman; +Cc: stable, patches, Max Kellermann, Xiubo Li
On Thu, Jul 30, 2026 at 5:21 PM Greg Kroah-Hartman
<gregkh@linuxfoundation.org> wrote:
>
> 6.18-stable review patch. If anyone has any objections, please let me know.
>
> ------------------
>
> From: Max Kellermann <max.kellermann@ionos.com>
>
> commit cee38bbf5556a8e0a232ccae41649580827d7806 upstream.
>
> These permission checks were already missing in the initial
> impementation of these ioctls. This Ceph allows any user who owns a
> file descriptor to manipulate the layout of any file, even if they
> don't have write permissions.
>
> It might be a good idea to guard other ioctls with permission checks
> as well or even disallow regular users (even if they own the file) to
> manipulate layout settings completely, as this may be abused to DoS
> the Ceph servers, but right now, I find it most urgent to have setter
> checks at all.
>
> Cc: stable@vger.kernel.org
> Fixes: 8f4e91dee2a2 ("ceph: ioctls")
> Signed-off-by: Max Kellermann <max.kellermann@ionos.com>
> Reviewed-by: Xiubo Li <xiubo.li@clyso.com>
> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> ---
> fs/ceph/ioctl.c | 6 ++++++
> 1 file changed, 6 insertions(+)
>
> --- a/fs/ceph/ioctl.c
> +++ b/fs/ceph/ioctl.c
> @@ -72,6 +72,9 @@ static long ceph_ioctl_set_layout(struct
> struct ceph_ioctl_layout nl;
> int err;
>
> + if (!inode_owner_or_capable(&nop_mnt_idmap, inode))
> + return -EACCES;
> +
> if (copy_from_user(&l, arg, sizeof(l)))
> return -EFAULT;
>
> @@ -142,6 +145,9 @@ static long ceph_ioctl_set_layout_policy
> int err;
> struct ceph_mds_client *mdsc = ceph_sb_to_fs_client(inode->i_sb)->mdsc;
>
> + if (!inode_owner_or_capable(&nop_mnt_idmap, inode))
> + return -EACCES;
> +
> /* copy and validate */
> if (copy_from_user(&l, arg, sizeof(l)))
> return -EFAULT;
>
>
Hi Greg,
There is a concern about the correctness of this patch, please drop it
for now.
Thanks,
Ilya
^ permalink raw reply [flat|nested] 682+ messages in thread
* [PATCH 6.18 511/675] ceph: fix pre-auth out-of-bounds read on snaptrace in ceph_handle_caps()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (509 preceding siblings ...)
2026-07-30 14:14 ` [PATCH 6.18 510/675] ceph: add owner/capability checks for CEPH_IOC_SET_LAYOUT* Greg Kroah-Hartman
@ 2026-07-30 14:14 ` Greg Kroah-Hartman
2026-07-30 14:14 ` [PATCH 6.18 512/675] ceph: fix refcount leak in ceph_readdir() Greg Kroah-Hartman
` (168 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:14 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Bryam Vargas, Viacheslav Dubeyko,
Ilya Dryomov
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Bryam Vargas <hexlabsecurity@proton.me>
commit 4dbc71bcaf9a30abf3920a4e2cc4ed33bba78c02 upstream.
ceph_handle_caps() reads snap_trace_len from the wire-format
ceph_mds_caps header and uses it unconditionally to build a fake
end pointer (snaptrace + snaptrace_len) that is later handed to
ceph_update_snap_trace() in the CEPH_CAP_OP_IMPORT case:
snaptrace = h + 1;
snaptrace_len = le32_to_cpu(h->snap_trace_len);
p = snaptrace + snaptrace_len;
...
case CEPH_CAP_OP_IMPORT:
if (snaptrace_len) {
...
if (ceph_update_snap_trace(mdsc, snaptrace,
snaptrace + snaptrace_len,
false, &realm)) { ... }
ceph_update_snap_trace() then decodes a struct ceph_mds_snap_realm
from snaptrace using ceph_decode_need(&p, e, sizeof(*ri), bad)
with the attacker-supplied fake end e == snaptrace + snaptrace_len.
With snaptrace_len == 0xFFFFFFFF the bound check is trivially
satisfied, ri = p reads sizeof(struct ceph_mds_snap_realm) past
the legitimate msg->front buffer, and ri->num_snaps /
ri->num_prior_parent_snaps then drive further out-of-bounds
reads of the encoded snap arrays.
The eleven msg_version >= 2 .. msg_version >= 12 decoder blocks
above the op switch each catch this OOB through their
ceph_decode_*_safe() / ceph_decode_need() helpers, but they sit
behind a hdr.version-gated if, so a malicious or compromised
MDS that sets msg->hdr.version = 1 reaches the IMPORT path with
no version-gated decoder having validated snap_trace_len. The
shape has been present since ceph_handle_caps() was introduced.
Validate snap_trace_len against the message front buffer before
consuming it, using the canonical ceph_decode_need() / ceph_has_room()
helper. The helper bounds the length with subtraction (n <= end - p,
guarded by end >= p) rather than pointer addition, so it is wrap-safe
for the attacker-controlled u32 length on 32-bit builds where
p + snap_trace_len could overflow the address space. This matches the
rest of the ceph decode path (e.g. the pool_ns_len check a few lines
below), and the existing goto bad cleanup already covers this exit
path.
Cc: stable@vger.kernel.org
Fixes: a8599bd821d0 ("ceph: capability management")
Signed-off-by: Bryam Vargas <hexlabsecurity@proton.me>
Reviewed-by: Viacheslav Dubeyko <Slava.Dubeyko@ibm.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/ceph/caps.c | 1 +
1 file changed, 1 insertion(+)
--- a/fs/ceph/caps.c
+++ b/fs/ceph/caps.c
@@ -4364,6 +4364,7 @@ void ceph_handle_caps(struct ceph_mds_se
snaptrace = h + 1;
snaptrace_len = le32_to_cpu(h->snap_trace_len);
+ ceph_decode_need(&snaptrace, end, snaptrace_len, bad);
p = snaptrace + snaptrace_len;
if (msg_version >= 2) {
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 512/675] ceph: fix refcount leak in ceph_readdir()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (510 preceding siblings ...)
2026-07-30 14:14 ` [PATCH 6.18 511/675] ceph: fix pre-auth out-of-bounds read on snaptrace in ceph_handle_caps() Greg Kroah-Hartman
@ 2026-07-30 14:14 ` Greg Kroah-Hartman
2026-07-30 14:14 ` [PATCH 6.18 513/675] ceph: fix writeback_count leak in write_folio_nounlock() Greg Kroah-Hartman
` (167 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:14 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, WenTao Liang, Viacheslav Dubeyko,
Alex Markuze, Ilya Dryomov
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: WenTao Liang <vulab@iscas.ac.cn>
commit c3e64079d8b9663e3998d0caac9aba915b6b93ae upstream.
The ceph_readdir() function allocates a ceph_mds_request via
ceph_mdsc_create_request() and stores it in dfi->last_readdir. In
the directory entry processing loop, if the entry's offset is less
than ctx->pos or if the inode pointer is unexpectedly NULL, the
function returns -EIO without releasing the reference held by
dfi->last_readdir, causing a refcount leak.
Fix this by adding ceph_mdsc_put_request(dfi->last_readdir) before
returning on these error paths. Also set dfi->last_readdir to NULL
for safety, matching the cleanup done at the normal exit.
Cc: stable@vger.kernel.org
Fixes: af9ffa6df7e3 ("ceph: add support to readdir for encrypted names")
Signed-off-by: WenTao Liang <vulab@iscas.ac.cn>
Reviewed-by: Viacheslav Dubeyko <slava@dubeyko.com>
Reviewed-by: Alex Markuze <amarkuze@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/ceph/dir.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
--- a/fs/ceph/dir.c
+++ b/fs/ceph/dir.c
@@ -546,11 +546,16 @@ more:
pr_warn_client(cl,
"%p %llx.%llx rde->offset 0x%llx ctx->pos 0x%llx\n",
inode, ceph_vinop(inode), rde->offset, ctx->pos);
+ ceph_mdsc_put_request(dfi->last_readdir);
+ dfi->last_readdir = NULL;
return -EIO;
}
- if (WARN_ON_ONCE(!rde->inode.in))
+ if (WARN_ON_ONCE(!rde->inode.in)) {
+ ceph_mdsc_put_request(dfi->last_readdir);
+ dfi->last_readdir = NULL;
return -EIO;
+ }
ctx->pos = rde->offset;
doutc(cl, "%p %llx.%llx (%d/%d) -> %llx '%.*s' %p\n", inode,
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 513/675] ceph: fix writeback_count leak in write_folio_nounlock()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (511 preceding siblings ...)
2026-07-30 14:14 ` [PATCH 6.18 512/675] ceph: fix refcount leak in ceph_readdir() Greg Kroah-Hartman
@ 2026-07-30 14:14 ` Greg Kroah-Hartman
2026-07-30 14:14 ` [PATCH 6.18 514/675] libceph: bound get_version reply decode to front len Greg Kroah-Hartman
` (166 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:14 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Wentao Liang, Viacheslav Dubeyko,
Ilya Dryomov
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Wentao Liang <vulab@iscas.ac.cn>
commit cbf59617cd715219e84c50d106a3d0e1e8ba054e upstream.
write_folio_nounlock() increments fsc->writeback_count to track
in-flight writeback operations. On several error paths where the
function returns early (folio lookup failure, snapshot context
allocation failure, and writepages submission failure), the function
returns without calling atomic_long_dec_return() to decrement the
counter.
Each leaked increment keeps the counter above zero, which can prevent
the filesystem from cleanly unmounting or suspending writes.
Add atomic_long_dec_return() calls on all error paths that currently
return without decrementing the counter.
Cc: stable@vger.kernel.org
Fixes: d55207717ded ("ceph: add encryption support to writepage and writepages")
Signed-off-by: Wentao Liang <vulab@iscas.ac.cn>
Reviewed-by: Viacheslav Dubeyko <Slava.Dubeyko@ibm.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/ceph/addr.c | 9 +++++++++
1 file changed, 9 insertions(+)
--- a/fs/ceph/addr.c
+++ b/fs/ceph/addr.c
@@ -785,6 +785,9 @@ static int write_folio_nounlock(struct f
ceph_wbc.truncate_size, true);
if (IS_ERR(req)) {
folio_redirty_for_writepage(wbc, folio);
+ if (atomic_long_dec_return(&fsc->writeback_count) <
+ CONGESTION_OFF_THRESH(fsc->mount_options->congestion_kb))
+ fsc->write_congested = false;
return PTR_ERR(req);
}
@@ -804,6 +807,9 @@ static int write_folio_nounlock(struct f
folio_redirty_for_writepage(wbc, folio);
folio_end_writeback(folio);
ceph_osdc_put_request(req);
+ if (atomic_long_dec_return(&fsc->writeback_count) <
+ CONGESTION_OFF_THRESH(fsc->mount_options->congestion_kb))
+ fsc->write_congested = false;
return PTR_ERR(bounce_page);
}
}
@@ -838,6 +844,9 @@ static int write_folio_nounlock(struct f
ceph_vinop(inode), folio);
folio_redirty_for_writepage(wbc, folio);
folio_end_writeback(folio);
+ if (atomic_long_dec_return(&fsc->writeback_count) <
+ CONGESTION_OFF_THRESH(fsc->mount_options->congestion_kb))
+ fsc->write_congested = false;
return err;
}
if (err == -EBLOCKLISTED)
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 514/675] libceph: bound get_version reply decode to front len
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (512 preceding siblings ...)
2026-07-30 14:14 ` [PATCH 6.18 513/675] ceph: fix writeback_count leak in write_folio_nounlock() Greg Kroah-Hartman
@ 2026-07-30 14:14 ` Greg Kroah-Hartman
2026-07-30 14:14 ` [PATCH 6.18 515/675] libceph: Fix multiplication overflow in decode_new_up_state_weight() Greg Kroah-Hartman
` (165 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:14 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Yuan Tan, Zhengchuan Liang, Xin Liu,
Douya Le, Ren Wei, Viacheslav Dubeyko, Ilya Dryomov
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Douya Le <ldy3087146292@gmail.com>
commit d3c32939fa0e3ee9b883b9a0fd1972c5c444e3d0 upstream.
handle_get_version_reply() uses msg->front_alloc_len as the decode
boundary for MON_GET_VERSION_REPLY. That is the size of the reused
reply buffer, not the number of bytes actually received.
A truncated reply can therefore pass ceph_decode_need() and decode the
second u64 from stale tail bytes left in the buffer by an earlier
message, causing an uninitialized memory read.
Use msg->front.iov_len as the receive-side decode boundary, matching
other libceph reply handlers and limiting decoding to the bytes that
were actually read from the wire.
Cc: stable@vger.kernel.org
Fixes: 513a8243d67f ("libceph: mon_get_version request infrastructure")
Reported-by: Yuan Tan <yuantan098@gmail.com>
Reported-by: Zhengchuan Liang <zcliangcn@gmail.com>
Reported-by: Xin Liu <bird@lzu.edu.cn>
Assisted-by: Codex:GPT-5.4
Signed-off-by: Douya Le <ldy3087146292@gmail.com>
Signed-off-by: Ren Wei <n05ec@lzu.edu.cn>
Reviewed-by: Viacheslav Dubeyko <slava@dubeyko.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/ceph/mon_client.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/net/ceph/mon_client.c
+++ b/net/ceph/mon_client.c
@@ -821,7 +821,7 @@ static void handle_get_version_reply(str
struct ceph_mon_generic_request *req;
u64 tid = le64_to_cpu(msg->hdr.tid);
void *p = msg->front.iov_base;
- void *end = p + msg->front_alloc_len;
+ void *const end = p + msg->front.iov_len;
u64 handle;
dout("%s msg %p tid %llu\n", __func__, msg, tid);
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 515/675] libceph: Fix multiplication overflow in decode_new_up_state_weight()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (513 preceding siblings ...)
2026-07-30 14:14 ` [PATCH 6.18 514/675] libceph: bound get_version reply decode to front len Greg Kroah-Hartman
@ 2026-07-30 14:14 ` Greg Kroah-Hartman
2026-07-30 14:14 ` [PATCH 6.18 516/675] libceph: guard missing CRUSH type name lookup Greg Kroah-Hartman
` (164 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:14 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Raphael Zimmer, Viacheslav Dubeyko,
Ilya Dryomov
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Raphael Zimmer <raphael.zimmer@tu-ilmenau.de>
commit 98917a499ec7064c14fc56d180a4fd636fc2784c upstream.
If a message of type CEPH_MSG_OSD_MAP contains a (maliciously) corrupted
osdmap, out-of-bounds memory accesses may occur in
decode_new_up_state_weight(). This happens because the bounds check for
the new_state part is based on calculating its length depending on a len
value read from the incoming message. This calculation may overflow
leading to an incorrect bounds check. Subsequently, out-of-bounds reads
may occur when decoding this part.
This patch switches the multiplication to use check_mul_overflow() to
abort processing the osdmap if an overflow occurred. Therefore,
osdmaps/messages containing large values for len that result in a
multiplication overflow are treated as invalid.
[ idryomov: rename new_state_len -> new_state_item_size, formatting ]
Cc: stable@vger.kernel.org
Fixes: 930c53286977 ("libceph: apply new_state before new_up_client on incrementals")
Signed-off-by: Raphael Zimmer <raphael.zimmer@tu-ilmenau.de>
Reviewed-by: Viacheslav Dubeyko <Slava.Dubeyko@ibm.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/ceph/osdmap.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
--- a/net/ceph/osdmap.c
+++ b/net/ceph/osdmap.c
@@ -1844,6 +1844,8 @@ static int decode_new_up_state_weight(vo
void *new_up_client;
void *new_state;
void *new_weight_end;
+ const u32 new_state_item_size =
+ sizeof(u32) + (struct_v >= 5 ? sizeof(u32) : sizeof(u8));
u32 len;
int ret;
int i;
@@ -1864,7 +1866,8 @@ static int decode_new_up_state_weight(vo
new_state = *p;
ceph_decode_32_safe(p, end, len, e_inval);
- len *= sizeof(u32) + (struct_v >= 5 ? sizeof(u32) : sizeof(u8));
+ if (check_mul_overflow(len, new_state_item_size, &len))
+ goto e_inval;
ceph_decode_need(p, end, len, e_inval);
*p += len;
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 516/675] libceph: guard missing CRUSH type name lookup
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (514 preceding siblings ...)
2026-07-30 14:14 ` [PATCH 6.18 515/675] libceph: Fix multiplication overflow in decode_new_up_state_weight() Greg Kroah-Hartman
@ 2026-07-30 14:14 ` Greg Kroah-Hartman
2026-07-30 14:14 ` [PATCH 6.18 517/675] libceph: refresh auth->authorizer_buf{,_len} after authorizer update Greg Kroah-Hartman
` (163 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:14 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Yuan Tan, Zhengchuan Liang, Xin Liu,
Zhao Zhang, Ren Wei, Viacheslav Dubeyko, Ilya Dryomov
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Zhao Zhang <zzhan461@ucr.edu>
commit bbeae12fda3384a90fbebc8a19ba9d33f85b5361 upstream.
Localized read selection can walk a parent bucket whose name exists in
the CRUSH map while its type has no matching entry in type_names.
get_immediate_parent() then dereferences a NULL type_cn and passes an
invalid pointer into strcmp(), causing a null-ptr-deref.
Skip such malformed parent buckets unless both the bucket name and type
name metadata are present. This keeps malformed hierarchy data from
crashing locality lookup and safely falls back to "not local".
[ idryomov: add WARN_ON_ONCE ]
Cc: stable@vger.kernel.org
Fixes: 117d96a04f00 ("libceph: support for balanced and localized reads")
Reported-by: Yuan Tan <yuantan098@gmail.com>
Reported-by: Zhengchuan Liang <zcliangcn@gmail.com>
Reported-by: Xin Liu <bird@lzu.edu.cn>
Assisted-by: Codex:GPT-5.4
Signed-off-by: Zhao Zhang <zzhan461@ucr.edu>
Signed-off-by: Ren Wei <n05ec@lzu.edu.cn>
Reviewed-by: Viacheslav Dubeyko <slava@dubeyko.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/ceph/osdmap.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
--- a/net/ceph/osdmap.c
+++ b/net/ceph/osdmap.c
@@ -3060,8 +3060,11 @@ static int get_immediate_parent(struct c
if (b->items[j] != id)
continue;
- *parent_type_id = b->type;
type_cn = lookup_crush_name(&c->type_names, b->type);
+ if (WARN_ON_ONCE(!type_cn))
+ continue;
+
+ *parent_type_id = b->type;
parent_loc->cl_type_name = type_cn->cn_name;
parent_loc->cl_name = cn->cn_name;
return b->id;
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 517/675] libceph: refresh auth->authorizer_buf{,_len} after authorizer update
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (515 preceding siblings ...)
2026-07-30 14:14 ` [PATCH 6.18 516/675] libceph: guard missing CRUSH type name lookup Greg Kroah-Hartman
@ 2026-07-30 14:14 ` Greg Kroah-Hartman
2026-07-30 14:14 ` [PATCH 6.18 518/675] libceph: Reject monmaps advertising zero monitors Greg Kroah-Hartman
` (162 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:14 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Shuangpeng Bai, Alex Markuze,
Ilya Dryomov
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Shuangpeng Bai <shuangpeng.kernel@gmail.com>
commit 937d61f86d377a3aa578adae7a3dfcecdddf9d89 upstream.
ceph_x_create_authorizer() caches au->buf->vec.iov_base and
au->buf->vec.iov_len in struct ceph_auth_handshake. These
cached values are then used by the messenger connect code when
sending the authorizer.
ceph_x_update_authorizer() can rebuild the authorizer when a newer
service ticket is available. If the rebuilt authorizer no longer
fits in the existing buffer, ceph_x_build_authorizer() drops its
reference to au->buf and allocates a new one. If this is the final
reference, ceph_buffer_put() frees the old ceph_buffer and its
vec.iov_base, but auth->authorizer_buf still points at that freed
memory.
A subsequent msgr1 reconnect can therefore queue the stale pointer
and trigger a KASAN slab-use-after-free in _copy_from_iter() while
tcp_sendmsg() copies the authorizer.
Refresh auth->authorizer_buf and auth->authorizer_buf_len after a
successful authorizer rebuild so the messenger sends the current
buffer.
Cc: stable@vger.kernel.org
Fixes: 0bed9b5c523d ("libceph: add update_authorizer auth method")
Closes: https://lore.kernel.org/all/E378850E-106C-427B-A241-970EB2D054D7@gmail.com/
Signed-off-by: Shuangpeng Bai <shuangpeng.kernel@gmail.com>
Reviewed-by: Alex Markuze <amarkuze@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/ceph/auth_x.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
--- a/net/ceph/auth_x.c
+++ b/net/ceph/auth_x.c
@@ -781,9 +781,16 @@ static int ceph_x_update_authorizer(
au = (struct ceph_x_authorizer *)auth->authorizer;
if (au->secret_id < th->secret_id) {
+ int ret;
+
dout("ceph_x_update_authorizer service %u secret %llu < %llu\n",
au->service, au->secret_id, th->secret_id);
- return ceph_x_build_authorizer(ac, th, au);
+ ret = ceph_x_build_authorizer(ac, th, au);
+ if (ret)
+ return ret;
+
+ auth->authorizer_buf = au->buf->vec.iov_base;
+ auth->authorizer_buf_len = au->buf->vec.iov_len;
}
return 0;
}
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 518/675] libceph: Reject monmaps advertising zero monitors
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (516 preceding siblings ...)
2026-07-30 14:14 ` [PATCH 6.18 517/675] libceph: refresh auth->authorizer_buf{,_len} after authorizer update Greg Kroah-Hartman
@ 2026-07-30 14:14 ` Greg Kroah-Hartman
2026-07-30 14:14 ` [PATCH 6.18 519/675] libceph: reject zero bucket types in crush_decode Greg Kroah-Hartman
` (161 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:14 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Raphael Zimmer, Ilya Dryomov
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Raphael Zimmer <raphael.zimmer@tu-ilmenau.de>
commit 40480eee361ed9676b3f844d532ac28b47251634 upstream.
A message of type CEPH_MSG_MON_MAP contains a monmap that is sent from a
monitor to the client. This monmap contains information about the
existing monitors in the cluster. Currently, a monmap indicating that
there are zero monitors in the cluster is treated as valid. However, it
is impossible to have zero monitors in the cluster and still receive a
valid monmap from a monitor. Therefore, such a monmap must be corrupted
and should be treated as invalid. Furthermore, a monmap with a monitor
count of zero can subsequently crash the client when attempting to open
a session with a monitor in __open_session(). This happens because the
"BUG_ON(monc->monmap->num_mon < 1)" assertion in pick_new_mon() is
triggered.
This patch extends a check in ceph_monmap_decode() to also reject
arriving mon_maps with num_mon == 0 rather than only with
num_mon > CEPH_MAX_MON.
[ idryomov: drop "log output for unusual values of num_mon" part ]
Cc: stable@vger.kernel.org
Signed-off-by: Raphael Zimmer <raphael.zimmer@tu-ilmenau.de>
Reviewed-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/ceph/mon_client.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/net/ceph/mon_client.c
+++ b/net/ceph/mon_client.c
@@ -114,7 +114,7 @@ static struct ceph_monmap *ceph_monmap_d
dout("%s fsid %pU epoch %u num_mon %u\n", __func__, &fsid, epoch,
num_mon);
- if (num_mon > CEPH_MAX_MON)
+ if (num_mon == 0 || num_mon > CEPH_MAX_MON)
goto e_inval;
monmap = kmalloc(struct_size(monmap, mon_inst, num_mon), GFP_NOIO);
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 519/675] libceph: reject zero bucket types in crush_decode
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (517 preceding siblings ...)
2026-07-30 14:14 ` [PATCH 6.18 518/675] libceph: Reject monmaps advertising zero monitors Greg Kroah-Hartman
@ 2026-07-30 14:14 ` Greg Kroah-Hartman
2026-07-30 14:14 ` [PATCH 6.18 520/675] libceph: remove debugfs files before client teardown Greg Kroah-Hartman
` (160 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:14 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Yuan Tan, Zhengchuan Liang, Xin Liu,
Douya Le, Ren Wei, Ilya Dryomov
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Douya Le <ldy3087146292@gmail.com>
commit 05f90284223381005d6bcddab3fda4a97f9c3401 upstream.
CRUSH bucket type 0 is reserved for devices. The mapper relies on
that invariant and uses type 0 to identify leaf devices.
If crush_decode() accepts a bucket with type 0, a malformed CRUSH map
can make the mapper treat a negative bucket ID as a device and pass it
to is_out(), which then indexes the OSD weight array with a negative
value.
Reject zero bucket types while decoding the CRUSH map so the invalid
state never reaches the mapper.
Cc: stable@vger.kernel.org
Fixes: f24e9980eb86 ("ceph: OSD client")
Reported-by: Yuan Tan <yuantan098@gmail.com>
Reported-by: Zhengchuan Liang <zcliangcn@gmail.com>
Reported-by: Xin Liu <bird@lzu.edu.cn>
Assisted-by: Codex:GPT-5.4
Signed-off-by: Douya Le <ldy3087146292@gmail.com>
Signed-off-by: Ren Wei <n05ec@lzu.edu.cn>
Reviewed-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/ceph/osdmap.c | 2 ++
1 file changed, 2 insertions(+)
--- a/net/ceph/osdmap.c
+++ b/net/ceph/osdmap.c
@@ -520,6 +520,8 @@ static struct crush_map *crush_decode(vo
ceph_decode_need(p, end, 4*sizeof(u32), bad);
b->id = ceph_decode_32(p);
b->type = ceph_decode_16(p);
+ if (b->type == 0)
+ goto bad;
b->alg = ceph_decode_8(p);
if (b->alg != alg) {
b->alg = 0;
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 520/675] libceph: remove debugfs files before client teardown
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (518 preceding siblings ...)
2026-07-30 14:14 ` [PATCH 6.18 519/675] libceph: reject zero bucket types in crush_decode Greg Kroah-Hartman
@ 2026-07-30 14:14 ` Greg Kroah-Hartman
2026-07-30 14:14 ` [PATCH 6.18 521/675] amt: fix use-after-free in AMT delayed works Greg Kroah-Hartman
` (159 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:14 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Yuan Tan, Zhengchuan Liang, Xin Liu,
Douya Le, Ren Wei, Viacheslav Dubeyko, Ilya Dryomov
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Douya Le <ldy3087146292@gmail.com>
commit e4c804726c4afce3ba648b982d564f6af2cfa328 upstream.
ceph_destroy_client() tears down the monitor client before removing
the per-client debugfs files. A concurrent read of the monmap debugfs
file can enter monmap_show() after ceph_monc_stop() has freed
monc->monmap, triggering a use-after-free.
Remove the debugfs files before stopping the OSD and monitor clients.
debugfs_remove() drains active handlers and prevents new accesses, so
the debugfs callbacks can no longer race the rest of client teardown.
Cc: stable@vger.kernel.org
Fixes: 76aa844d5b2f ("ceph: debugfs")
Reported-by: Yuan Tan <yuantan098@gmail.com>
Reported-by: Zhengchuan Liang <zcliangcn@gmail.com>
Reported-by: Xin Liu <bird@lzu.edu.cn>
Assisted-by: Codex:GPT-5.4
Signed-off-by: Douya Le <ldy3087146292@gmail.com>
Signed-off-by: Ren Wei <n05ec@lzu.edu.cn>
Reviewed-by: Viacheslav Dubeyko <slava@dubeyko.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/ceph/ceph_common.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/net/ceph/ceph_common.c
+++ b/net/ceph/ceph_common.c
@@ -763,13 +763,13 @@ void ceph_destroy_client(struct ceph_cli
atomic_set(&client->msgr.stopping, 1);
+ ceph_debugfs_client_cleanup(client);
+
/* unmount */
ceph_osdc_stop(&client->osdc);
ceph_monc_stop(&client->monc);
ceph_messenger_fini(&client->msgr);
- ceph_debugfs_client_cleanup(client);
-
ceph_destroy_options(client->options);
kfree(client);
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 521/675] amt: fix use-after-free in AMT delayed works
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (519 preceding siblings ...)
2026-07-30 14:14 ` [PATCH 6.18 520/675] libceph: remove debugfs files before client teardown Greg Kroah-Hartman
@ 2026-07-30 14:14 ` Greg Kroah-Hartman
2026-07-30 14:14 ` [PATCH 6.18 522/675] ASoC: fsl: imx-card: Skip sysclk reset for active DAIs in shutdown Greg Kroah-Hartman
` (158 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:14 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Shihuang Liu, Simon Horman,
Taehee Yoo, Jakub Kicinski
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Shihuang Liu <shlomojune6@gmail.com>
commit ea20c44935d6142daecfa9b39d635033a7553e1b upstream.
When an AMT device is removed, pending delayed works can still access
the freed amt_dev structure, which may result in kernel crashes or
memory corruption.
amt_dev_stop() cancels req_wq and discovery_wq with
cancel_delayed_work_sync(), but these works can be scheduled again
from event_wq after the cancellation. This allows delayed works to
access the freed amt_dev structure after the netdev has been released.
The following is a simple race scenario:
CPU0 CPU1
amt_dev_stop()
cancel_delayed_work_sync()
amt_event_work()
mod_delayed_work(req_wq)
free netdev
req_wq accesses freed amt_dev
Use disable_delayed_work_sync() in amt_dev_stop() to prevent req_wq and
discovery_wq from being queued again and wait for running work items
to complete.
The delayed works are disabled after initialization in
amt_newlink() and enabled only when the device is successfully opened.
This keeps the delayed work lifecycle synchronized with the lifetime
of the AMT device.
Fixes: cbc21dc1cfe9 ("amt: add data plane of amt interface")
Cc: stable@vger.kernel.org
Signed-off-by: Shihuang Liu <shlomojune6@gmail.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Reviewed-by: Taehee Yoo <ap420073@gmail.com>
Link: https://patch.msgid.link/20260722113919.7723-1-shlomojune6@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/amt.c | 14 +++++++++++---
1 file changed, 11 insertions(+), 3 deletions(-)
--- a/drivers/net/amt.c
+++ b/drivers/net/amt.c
@@ -3034,9 +3034,15 @@ static int amt_dev_open(struct net_devic
amt->event_idx = 0;
amt->nr_events = 0;
+ enable_delayed_work(&amt->discovery_wq);
+ enable_delayed_work(&amt->req_wq);
+
err = amt_socket_create(amt);
- if (err)
+ if (err) {
+ disable_delayed_work(&amt->req_wq);
+ disable_delayed_work(&amt->discovery_wq);
return err;
+ }
amt->req_cnt = 0;
amt->remote_ip = 0;
@@ -3062,8 +3068,8 @@ static int amt_dev_stop(struct net_devic
struct sk_buff *skb;
int i;
- cancel_delayed_work_sync(&amt->req_wq);
- cancel_delayed_work_sync(&amt->discovery_wq);
+ disable_delayed_work_sync(&amt->req_wq);
+ disable_delayed_work_sync(&amt->discovery_wq);
cancel_delayed_work_sync(&amt->secret_wq);
/* shutdown */
@@ -3317,6 +3323,8 @@ static int amt_newlink(struct net_device
INIT_DELAYED_WORK(&amt->req_wq, amt_req_work);
INIT_DELAYED_WORK(&amt->secret_wq, amt_secret_work);
INIT_WORK(&amt->event_wq, amt_event_work);
+ disable_delayed_work(&amt->req_wq);
+ disable_delayed_work(&amt->discovery_wq);
INIT_LIST_HEAD(&amt->tunnel_list);
return 0;
err:
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 522/675] ASoC: fsl: imx-card: Skip sysclk reset for active DAIs in shutdown
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (520 preceding siblings ...)
2026-07-30 14:14 ` [PATCH 6.18 521/675] amt: fix use-after-free in AMT delayed works Greg Kroah-Hartman
@ 2026-07-30 14:14 ` Greg Kroah-Hartman
2026-07-30 14:14 ` [PATCH 6.18 523/675] ASoC: fsl_sai: Fix spurious BCLK on resume by clearing BYP Greg Kroah-Hartman
` (157 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:14 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Chancel Liu, Mark Brown
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Chancel Liu <chancel.liu@nxp.com>
commit 9f86aea992568c2b4db78c80ff9508af9e050ff7 upstream.
In a full-duplex setup, when one direction (playback or capture) is
closed while the other is still running, imx_aif_shutdown() was
unconditionally calling snd_soc_dai_set_sysclk() with rate=0 for all
cpu/codec DAIs, which would disable the clock still needed by the
active stream.
Add snd_soc_dai_active() checks before clearing sysclk so that only
truly inactive DAIs have their clocks reset.
Fixes: 2260bc6ea8bd ("ASoC: imx-card: Add WM8524 support")
Cc: stable@vger.kernel.org
Signed-off-by: Chancel Liu <chancel.liu@nxp.com>
Link: https://patch.msgid.link/20260710031333.3491445-1-chancel.liu@oss.nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
sound/soc/fsl/imx-card.c | 12 ++++++++----
1 file changed, 8 insertions(+), 4 deletions(-)
diff --git a/sound/soc/fsl/imx-card.c b/sound/soc/fsl/imx-card.c
index a4518fefad69..43438af1e1c6 100644
--- a/sound/soc/fsl/imx-card.c
+++ b/sound/soc/fsl/imx-card.c
@@ -496,11 +496,15 @@ static void imx_aif_shutdown(struct snd_pcm_substream *substream)
struct snd_soc_dai *codec_dai;
int i;
- for_each_rtd_cpu_dais(rtd, i, cpu_dai)
- snd_soc_dai_set_sysclk(cpu_dai, 0, 0, SND_SOC_CLOCK_OUT);
+ for_each_rtd_cpu_dais(rtd, i, cpu_dai) {
+ if (!snd_soc_dai_active(cpu_dai))
+ snd_soc_dai_set_sysclk(cpu_dai, 0, 0, SND_SOC_CLOCK_OUT);
+ }
- for_each_rtd_codec_dais(rtd, i, codec_dai)
- snd_soc_dai_set_sysclk(codec_dai, 0, 0, SND_SOC_CLOCK_IN);
+ for_each_rtd_codec_dais(rtd, i, codec_dai) {
+ if (!snd_soc_dai_active(codec_dai))
+ snd_soc_dai_set_sysclk(codec_dai, 0, 0, SND_SOC_CLOCK_IN);
+ }
}
static const struct snd_soc_ops imx_aif_ops = {
--
2.55.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 523/675] ASoC: fsl_sai: Fix spurious BCLK on resume by clearing BYP
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (521 preceding siblings ...)
2026-07-30 14:14 ` [PATCH 6.18 522/675] ASoC: fsl: imx-card: Skip sysclk reset for active DAIs in shutdown Greg Kroah-Hartman
@ 2026-07-30 14:14 ` Greg Kroah-Hartman
2026-07-30 14:14 ` [PATCH 6.18 524/675] binfmt_elf_fdpic: only honour the first PT_INTERP Greg Kroah-Hartman
` (156 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:14 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Chancel Liu, Shengjiu Wang,
Mark Brown
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Chancel Liu <chancel.liu@nxp.com>
commit d091132889c1378dd0944a72f86eae3e4da1e4fa upstream.
When the BCLK divider ratio is 1:1, fsl_sai_set_bclk() enables bypass
mode by setting BYP, but never clears the bit. The BYP=1 value remains
in the regcache, and is restored by regcache_sync() on the next runtime
resume.
Since BYP=1 combined with BCD=1 immediately outputs the ungated MCLK
as BCLK without waiting for BCE/TE/RE to be enabled, the clock is
driven prematurely before the stream is fully configured, causing
noise on some codecs.
Fix this by clearing BYP and BCI in fsl_sai_hw_free() taking into
account sync mode and the opposite stream's state, so that the regcache
holds BYP=0 before runtime suspend and regcache_sync() on resume will
not restore bypass mode prematurely.
Fixes: a50b7926d015 ("ASoC: fsl_sai: implement 1:1 bclk:mclk ratio support")
Cc: stable@vger.kernel.org
Signed-off-by: Chancel Liu <chancel.liu@nxp.com>
Reviewed-by: Shengjiu Wang <shengjiu.wang@gmail.com>
Link: https://patch.msgid.link/20260710070835.3749817-1-chancel.liu@oss.nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
sound/soc/fsl/fsl_sai.c | 29 +++++++++++++++++++++++++----
1 file changed, 25 insertions(+), 4 deletions(-)
--- a/sound/soc/fsl/fsl_sai.c
+++ b/sound/soc/fsl/fsl_sai.c
@@ -757,6 +757,8 @@ static int fsl_sai_hw_free(struct snd_pc
struct fsl_sai *sai = snd_soc_dai_get_drvdata(cpu_dai);
bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
unsigned int ofs = sai->soc_data->reg_offset;
+ int adir = tx ? RX : TX;
+ int dir = tx ? TX : RX;
/* Clear xMR to avoid channel swap with mclk_with_tere enabled case */
regmap_write(sai->regmap, FSL_SAI_xMR(tx), 0);
@@ -764,10 +766,29 @@ static int fsl_sai_hw_free(struct snd_pc
regmap_update_bits(sai->regmap, FSL_SAI_xCR3(tx, ofs),
FSL_SAI_CR3_TRCE_MASK, 0);
- if (!sai->is_consumer_mode[tx] &&
- sai->mclk_streams & BIT(substream->stream)) {
- clk_disable_unprepare(sai->mclk_clk[sai->mclk_id[tx]]);
- sai->mclk_streams &= ~BIT(substream->stream);
+ if (!sai->is_consumer_mode[tx]) {
+ bool adir_active = !!(sai->mclk_streams & BIT(!substream->stream));
+ /*
+ * If opposite stream provides clocks for synchronous mode and
+ * it is inactive, Clear BYP and BCI
+ */
+ if (fsl_sai_dir_is_synced(sai, adir) && !adir_active)
+ regmap_update_bits(sai->regmap, FSL_SAI_xCR2(!tx, ofs),
+ FSL_SAI_CR2_BCI | FSL_SAI_CR2_BYP, 0);
+ /*
+ * Clear BYP and BCI of current stream if either of:
+ * 1. current stream doesn't provide clocks for synchronous mode
+ * 2. current stream provides clocks for synchronous mode but no
+ * more stream is active.
+ */
+ if (!fsl_sai_dir_is_synced(sai, dir) || !adir_active)
+ regmap_update_bits(sai->regmap, FSL_SAI_xCR2(tx, ofs),
+ FSL_SAI_CR2_BCI | FSL_SAI_CR2_BYP, 0);
+
+ if (sai->mclk_streams & BIT(substream->stream)) {
+ clk_disable_unprepare(sai->mclk_clk[sai->mclk_id[tx]]);
+ sai->mclk_streams &= ~BIT(substream->stream);
+ }
}
return 0;
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 524/675] binfmt_elf_fdpic: only honour the first PT_INTERP
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (522 preceding siblings ...)
2026-07-30 14:14 ` [PATCH 6.18 523/675] ASoC: fsl_sai: Fix spurious BCLK on resume by clearing BYP Greg Kroah-Hartman
@ 2026-07-30 14:14 ` Greg Kroah-Hartman
2026-07-30 14:14 ` [PATCH 6.18 525/675] fs/super: fix emergency thaw double-unlock of s_umount Greg Kroah-Hartman
` (155 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:14 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Jori Koolstra,
Christian Brauner (Amutable)
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Christian Brauner <brauner@kernel.org>
commit 3349ef6a366a61d631f6a263d12cea240957719d upstream.
The program header scan handles PT_INTERP from a switch nested in the
scan loop, so its break leaves the switch and not the loop. A binary
carrying more than one PT_INTERP runs the case again and overwrites both
interpreter_name and interpreter. The previous name allocation leaks and
so does the previous interpreter reference, along with the write denial
open_exec() took on it. The denial is never released, so the file stays
unwritable for as long as the system runs.
An unprivileged caller reaches this with a crafted binary and repeats it
at will. binfmt_elf stops at the first PT_INTERP. Do the same here.
The flaw dates back to the driver's introduction in the pre-git history
tree introduced in v2.6.11 by 91808d6ebe39 ("[PATCH] FRV: Add FDPIC ELF
binary format driver").
Link: https://patch.msgid.link/20260721-gezittert-medium-kreide-b41fc1f0277e@brauner
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Cc: stable@vger.kernel.org
Reviewed-by: Jori Koolstra <jkoolstra@xs4all.nl>
Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/binfmt_elf_fdpic.c | 4 ++++
1 file changed, 4 insertions(+)
--- a/fs/binfmt_elf_fdpic.c
+++ b/fs/binfmt_elf_fdpic.c
@@ -231,6 +231,10 @@ static int load_elf_fdpic_binary(struct
for (i = 0; i < exec_params.hdr.e_phnum; i++, phdr++) {
switch (phdr->p_type) {
case PT_INTERP:
+ /* elf ABI allows only one interpreter */
+ if (interpreter_name)
+ continue;
+
retval = -ENOMEM;
if (phdr->p_filesz > PATH_MAX)
goto error;
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 525/675] fs/super: fix emergency thaw double-unlock of s_umount
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (523 preceding siblings ...)
2026-07-30 14:14 ` [PATCH 6.18 524/675] binfmt_elf_fdpic: only honour the first PT_INTERP Greg Kroah-Hartman
@ 2026-07-30 14:14 ` Greg Kroah-Hartman
2026-07-30 14:14 ` [PATCH 6.18 526/675] fs: preserve ACL_DONT_CACHE state in forget_cached_acl() Greg Kroah-Hartman
` (154 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:14 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Chen Changcheng,
Christian Brauner (Amutable)
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Chen Changcheng <chenchangcheng@kylinos.cn>
commit 503d67fbaec6fdeaba391cb497675071db9d16ea upstream.
do_thaw_all() iterates over all superblocks via __iterate_supers()
with SUPER_ITER_EXCL, which acquires s_umount exclusively before
calling the callback and releases it afterwards. However, the
callback do_thaw_all_callback() calls thaw_super_locked() which
unconditionally releases s_umount on every code path. This results
in a second unlock attempt in __iterate_supers() that corrupts the
rwsem state, triggering a DEBUG_RWSEMS warning:
[ 182.601148] sysrq: Emergency Thaw of all frozen filesystems
[ 182.601865] ------------[ cut here ]------------
[ 182.602375] DEBUG_RWSEMS_WARN_ON((rwsem_owner(sem) != current) && !rwsem_test_oflags(sem, RWSEM_NONSPINNABLE)): count = 0x0, magic = 0xffff99b1011e5870, owner = 0x0, curr 0xffff99b101b06c80, list not empty
[ 182.603817] WARNING: kernel/locking/rwsem.c:1412 at up_write+0xa3/0x170, CPU#2: kworker/2:1/53
[ 182.604578] Modules linked in:
[ 182.604864] CPU: 2 UID: 0 PID: 53 Comm: kworker/2:1 Not tainted 7.2.0-rc4-00001-gbd3bd93ea98a-dirty #4 PREEMPT(lazy)
[ 182.605711] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1kylin1 04/01/2014
[ 182.606417] Workqueue: events do_thaw_all
[ 182.606750] RIP: 0010:up_write+0xaf/0x170
[ 182.607076] Code: 19 3a 92 48 0f 44 c2 48 8b 55 08 48 8b 55 00 4c 8b 45 08 48 8b 55 00 48 8d 3d ad 91 e0 01 48 8b 4d 20 50 48 c7 c6 f0 8c 26 92 <67> 48 0f b9 3a e8 d7 93 4e 00 58 eb 81 48 83 7f 18 00 48 c7 c2 8d
[ 182.608563] RSP: 0018:ffffb670001d7e08 EFLAGS: 00010246
[ 182.609007] RAX: ffffffff92349e8d RBX: 0000000000000000 RCX: ffff99b1011e5870
[ 182.609595] RDX: 0000000000000000 RSI: ffffffff92268cf0 RDI: ffffffff92914d10
[ 182.610283] RBP: ffff99b1011e5870 R08: 0000000000000000 R09: ffff99b101b06c80
[ 182.610847] R10: ffff99b10139a808 R11: fefefefefefefeff R12: 0000000000000000
[ 182.611414] R13: ffffffff90cf74d0 R14: 0000000000000000 R15: ffff99b1011e5800
[ 182.612009] FS: 0000000000000000(0000) GS:ffff99b1eaaee000(0000) knlGS:0000000000000000
[ 182.612670] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 182.613146] CR2: 00000000005c631c CR3: 00000000013ee000 CR4: 00000000000006f0
[ 182.613722] Call Trace:
[ 182.613946] <TASK>
[ 182.614130] __iterate_supers+0x128/0x150
[ 182.614463] do_thaw_all+0x1b/0x30
[ 182.614759] process_scheduled_works+0xbb/0x3f0
[ 182.615150] ? __pfx_worker_thread+0x10/0x10
[ 182.615499] worker_thread+0x129/0x270
[ 182.615816] ? __pfx_worker_thread+0x10/0x10
[ 182.616201] kthread+0xe2/0x120
[ 182.616469] ? __pfx_kthread+0x10/0x10
[ 182.616792] ret_from_fork+0x15b/0x240
[ 182.617115] ? __pfx_kthread+0x10/0x10
[ 182.617426] ret_from_fork_asm+0x1a/0x30
[ 182.617761] </TASK>
[ 182.617968] ---[ end trace 0000000000000000 ]---
[ 182.618412] Emergency Thaw complete
Fix this by switching to SUPER_ITER_UNLOCKED and acquiring s_umount
in the callback via super_lock_excl() before calling
thaw_super_locked(). This matches the locking pattern expected by
thaw_super_locked() and eliminates the double unlock.
While at it, remove the dead 'return;' at the end of
do_thaw_all_callback().
Fixes: 2992476528ae ("super: use a common iterator (Part 1)")
Cc: stable@vger.kernel.org
Signed-off-by: Chen Changcheng <chenchangcheng@kylinos.cn>
Link: https://patch.msgid.link/20260721064140.152305-1-chenchangcheng@kylinos.cn
Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/super.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
--- a/fs/super.c
+++ b/fs/super.c
@@ -1141,16 +1141,19 @@ void emergency_remount(void)
static void do_thaw_all_callback(struct super_block *sb, void *unused)
{
+ if (!super_lock_excl(sb))
+ return;
+
if (IS_ENABLED(CONFIG_BLOCK))
while (sb->s_bdev && !bdev_thaw(sb->s_bdev))
pr_warn("Emergency Thaw on %pg\n", sb->s_bdev);
+
thaw_super_locked(sb, FREEZE_HOLDER_USERSPACE, NULL);
- return;
}
static void do_thaw_all(struct work_struct *work)
{
- __iterate_supers(do_thaw_all_callback, NULL, SUPER_ITER_EXCL);
+ __iterate_supers(do_thaw_all_callback, NULL, SUPER_ITER_UNLOCKED);
kfree(work);
printk(KERN_WARNING "Emergency Thaw complete\n");
}
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 526/675] fs: preserve ACL_DONT_CACHE state in forget_cached_acl()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (524 preceding siblings ...)
2026-07-30 14:14 ` [PATCH 6.18 525/675] fs/super: fix emergency thaw double-unlock of s_umount Greg Kroah-Hartman
@ 2026-07-30 14:14 ` Greg Kroah-Hartman
2026-07-30 14:14 ` [PATCH 6.18 527/675] fscrypt: Add missing superblock check in find_or_insert_direct_key() Greg Kroah-Hartman
` (153 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:14 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Amir Goldstein, Luis Henriques,
Christian Brauner (Amutable)
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Amir Goldstein <amir73il@gmail.com>
commit 4b9a5458d02e214ef2b384124ca626e3e381d778 upstream.
The ACL_DONT_CACHE state is meant to be a constant state for the inode
for filesystems that want to opt out of posix acl caching.
Commit facd61053cff1 ("fuse: fixes after adapting to new posix acl api")
used this facility to opt out of posix acl caching for fuse inodes with
fuse server that does not negotiate FUSE_POSIX_ACL (fc->posix_acl).
The commit also takes care to gate the forget_all_cached_acls() call in
fuse_set_acl() on fc->posix_acl because there is no need for it, but
there are other placed in fuse code which call forget_all_cached_acls()
unconditional to fc->posix_acl and those cause the loss of the
ACL_DONT_CACHE state.
This is not only a functional bug. Properly timed, a get_acl() from this
fuse filesystem can return a stale cached value, as was observed in tests,
because set_acl() does not invalidate the unintentional acl cache.
We could fix this in fuse, but it actually makes no sense for the vfs
helper forget_cached_acl() to invalidate the ACL_DONT_CACHE state, so
let it not do that to fix fuse and future users of ACL_DONT_CACHE.
Fixes: facd61053cff1 ("fuse: fixes after adapting to new posix acl api")
Cc: stable@vger.kernel.org
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Link: https://patch.msgid.link/20260713220932.413004-2-amir73il@gmail.com
Reviewed-by: Luis Henriques <luis@igalia.com>
Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/posix_acl.c | 7 +++++++
1 file changed, 7 insertions(+)
--- a/fs/posix_acl.c
+++ b/fs/posix_acl.c
@@ -93,6 +93,13 @@ static void __forget_cached_acl(struct p
{
struct posix_acl *old;
+ /*
+ * ACL_DONT_CACHE is expected to be a "const" value and xchg it with
+ * ACL_NOT_CACHED would enable acl caching for the inode -
+ * clearly not what the caller has intended.
+ */
+ if (READ_ONCE(*p) == ACL_DONT_CACHE)
+ return;
old = xchg(p, ACL_NOT_CACHED);
if (!is_uncached_acl(old))
posix_acl_release(old);
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 527/675] fscrypt: Add missing superblock check in find_or_insert_direct_key()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (525 preceding siblings ...)
2026-07-30 14:14 ` [PATCH 6.18 526/675] fs: preserve ACL_DONT_CACHE state in forget_cached_acl() Greg Kroah-Hartman
@ 2026-07-30 14:14 ` Greg Kroah-Hartman
2026-07-30 14:14 ` [PATCH 6.18 528/675] ftrace: Add global mutex to serialize trace_parser access Greg Kroah-Hartman
` (152 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:14 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Sashiko, Christoph Hellwig,
Eric Biggers
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Eric Biggers <ebiggers@kernel.org>
commit b5fa40226e71c17847b9ff2816c6ca4133d0d994 upstream.
The legacy 'fscrypt_direct_keys' table caches master keys that are used
by v1 encryption policies that have FSCRYPT_POLICY_FLAG_DIRECT_KEY.
It's just a global table for all filesystems (since the keys can be
provided by the legacy process-subscribed keyrings mechanism, which
makes it difficult to reuse super_block::s_master_keys).
The entries in it ('struct fscrypt_direct_key') do contain a super_block
pointer, though, for passing to fscrypt_destroy_inline_crypt_key() when
the last inode that references the key is evicted.
However, when finding the fscrypt_direct_key for an inode, we weren't
actually comparing the super_block pointer. As a result, inodes with
different super_blocks could point to the same fscrypt_direct_key. That
could extend the lifetime of a fscrypt_direct_key beyond the
super_block it points to, causing a use-after-free later.
Fix this by creating distinct fscrypt_direct_key structs for distinct
super_block structs.
Note that this problem doesn't exist in the v2 policy equivalent
("per-mode keys"), since the data structures there are per super_block.
Fixes: 22e9947a4b2b ("fscrypt: stop holding extra request_queue references")
Cc: stable@vger.kernel.org
Reported-by: Sashiko <sashiko-bot@kernel.org>
Closes: https://sashiko.dev/#/patchset/20260717044303.425265-1-ebiggers%40kernel.org
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://patch.msgid.link/20260719033120.122120-1-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/crypto/keysetup_v1.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
--- a/fs/crypto/keysetup_v1.c
+++ b/fs/crypto/keysetup_v1.c
@@ -190,13 +190,19 @@ find_or_insert_direct_key(struct fscrypt
if (memcmp(ci->ci_policy.v1.master_key_descriptor,
dk->dk_descriptor, FSCRYPT_KEY_DESCRIPTOR_SIZE) != 0)
continue;
+ /* The sb is used at eviction time, so it must be the same. */
+ if (ci->ci_inode->i_sb != dk->dk_sb)
+ continue;
if (ci->ci_mode != dk->dk_mode)
continue;
if (!fscrypt_is_key_prepared(&dk->dk_key, ci))
continue;
if (crypto_memneq(raw_key, dk->dk_raw, ci->ci_mode->keysize))
continue;
- /* using existing tfm with same (descriptor, mode, raw_key) */
+ /*
+ * Use an existing prepared key with the same (descriptor, sb,
+ * mode, inlinecrypt, raw_key) combination.
+ */
refcount_inc(&dk->dk_refcount);
spin_unlock(&fscrypt_direct_keys_lock);
free_direct_key(to_insert);
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 528/675] ftrace: Add global mutex to serialize trace_parser access
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (526 preceding siblings ...)
2026-07-30 14:14 ` [PATCH 6.18 527/675] fscrypt: Add missing superblock check in find_or_insert_direct_key() Greg Kroah-Hartman
@ 2026-07-30 14:14 ` Greg Kroah-Hartman
2026-07-30 14:14 ` [PATCH 6.18 529/675] io_uring/rw: fix missing ERESTARTSYS conversion in read paths Greg Kroah-Hartman
` (151 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:14 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Tengda Wu, Steven Rostedt
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Tengda Wu <wutengda@huaweicloud.com>
commit 7720b63bcef3f54c7fe288774b720a227d54a306 upstream.
In ftrace, the trace_parser structure is allocated and initialized when
a trace file is opened, and is subsequently used across write and release
handlers to parse user input.
The affected handler paths and their specific functions are:
- Open paths: ftrace_regex_open(), ftrace_graph_open()
- Write paths: ftrace_regex_write(), ftrace_graph_write()
- Release paths: ftrace_regex_release(), ftrace_graph_release()
If userspace opens a trace file descriptor and shares it across multiple
threads, concurrent write calls will race on the parser's internal state,
specifically the 'idx', 'cont', and 'buffer' fields, leading to corrupted
input or undefined behavior.
Fix this by adding a global mutex, parser_lock, to serialize all access
to trace_parser across write and release paths, preventing concurrent
corruption of parser state.
Fixes: e704eff3ff51 ("ftrace: Have set_graph_function handle multiple functions in one write")
Fixes: 689fd8b65d66 ("tracing: trace parser support for function and graph")
Cc: stable@vger.kernel.org
Link: https://patch.msgid.link/20260725024721.1983675-1-wutengda@huaweicloud.com
Signed-off-by: Tengda Wu <wutengda@huaweicloud.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
kernel/trace/ftrace.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -1073,6 +1073,12 @@ struct ftrace_ops global_ops = {
};
/*
+ * parser_lock - Protects trace_parser state against concurrent operations.
+ * Held across trace_get_user() and subsequent buffer parsing to prevent races.
+ */
+static DEFINE_MUTEX(parser_lock);
+
+/*
* Used by the stack unwinder to know about dynamic ftrace trampolines.
*/
struct ftrace_ops *ftrace_ops_trampoline(unsigned long addr)
@@ -5783,6 +5789,8 @@ ftrace_regex_write(struct file *file, co
/* iter->hash is a local copy, so we don't need regex_lock */
parser = &iter->parser;
+
+ guard(mutex)(&parser_lock);
read = trace_get_user(parser, ubuf, cnt, ppos);
if (read >= 0 && trace_parser_loaded(parser) &&
@@ -6551,12 +6559,14 @@ int ftrace_regex_release(struct inode *i
iter = file->private_data;
parser = &iter->parser;
+ mutex_lock(&parser_lock);
if (trace_parser_loaded(parser)) {
int enable = !(iter->flags & FTRACE_ITER_NOTRACE);
ftrace_process_regex(iter, parser->buffer,
parser->idx, enable);
}
+ mutex_unlock(&parser_lock);
trace_parser_put(parser);
@@ -6888,10 +6898,12 @@ ftrace_graph_release(struct inode *inode
parser = &fgd->parser;
+ mutex_lock(&parser_lock);
if (trace_parser_loaded((parser))) {
ret = ftrace_graph_set_hash(fgd->new_hash,
parser->buffer);
}
+ mutex_unlock(&parser_lock);
trace_parser_put(parser);
@@ -7004,6 +7016,7 @@ ftrace_graph_write(struct file *file, co
parser = &fgd->parser;
+ guard(mutex)(&parser_lock);
read = trace_get_user(parser, ubuf, cnt, ppos);
if (read >= 0 && trace_parser_loaded(parser) &&
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 529/675] io_uring/rw: fix missing ERESTARTSYS conversion in read paths
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (527 preceding siblings ...)
2026-07-30 14:14 ` [PATCH 6.18 528/675] ftrace: Add global mutex to serialize trace_parser access Greg Kroah-Hartman
@ 2026-07-30 14:14 ` Greg Kroah-Hartman
2026-07-30 14:14 ` [PATCH 6.18 530/675] iomap: fix out-of-bounds bitmap_set() with zero-length range Greg Kroah-Hartman
` (150 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:14 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Yitang Yang, Jens Axboe
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Yitang Yang <yi1tang.yang@gmail.com>
commit ab05caca123c6d0b41850b7c05b246e4dca4a770 upstream.
Both read and write may receive internal restart error codes from
the filesystem layer and should be converted to -EINTR. However,
when multishot read support was added, the error code normalization
was lost for both io_read() and io_read_mshot().
Extract the conversion into io_fixup_restart_res() and apply it
in all three locations: io_rw_done(), io_read(), and io_read_mshot().
Fixes: a08d195b586a ("io_uring/rw: split io_read() into a helper")
Cc: stable@vger.kernel.org
Signed-off-by: Yitang Yang <yi1tang.yang@gmail.com>
Link: https://patch.msgid.link/20260722124551.130563-1-yi1tang.yang@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
io_uring/rw.c | 42 +++++++++++++++++++++++++-----------------
1 file changed, 25 insertions(+), 17 deletions(-)
--- a/io_uring/rw.c
+++ b/io_uring/rw.c
@@ -625,6 +625,24 @@ static void io_complete_rw_iopoll(struct
smp_store_release(&req->iopoll_completed, 1);
}
+static inline ssize_t io_fixup_restart_res(ssize_t ret)
+{
+ switch (ret) {
+ case -ERESTARTSYS:
+ case -ERESTARTNOINTR:
+ case -ERESTARTNOHAND:
+ case -ERESTART_RESTARTBLOCK:
+ /*
+ * We can't just restart the syscall, since previously
+ * submitted sqes may already be in progress. Just fail
+ * this IO with EINTR.
+ */
+ return -EINTR;
+ default:
+ return ret;
+ }
+}
+
static inline void io_rw_done(struct io_kiocb *req, ssize_t ret)
{
struct io_rw *rw = io_kiocb_to_cmd(req, struct io_rw);
@@ -634,21 +652,8 @@ static inline void io_rw_done(struct io_
return;
/* transform internal restart error codes */
- if (unlikely(ret < 0)) {
- switch (ret) {
- case -ERESTARTSYS:
- case -ERESTARTNOINTR:
- case -ERESTARTNOHAND:
- case -ERESTART_RESTARTBLOCK:
- /*
- * We can't just restart the syscall, since previously
- * submitted sqes may already be in progress. Just fail
- * this IO with EINTR.
- */
- ret = -EINTR;
- break;
- }
- }
+ if (unlikely(ret < 0))
+ ret = io_fixup_restart_res(ret);
if (req->ctx->flags & IORING_SETUP_IOPOLL)
io_complete_rw_iopoll(&rw->kiocb, ret);
@@ -1044,7 +1049,8 @@ int io_read(struct io_kiocb *req, unsign
if (req->flags & REQ_F_BUFFERS_COMMIT)
io_kbuf_recycle(req, sel.buf_list, issue_flags);
- return ret;
+
+ return io_fixup_restart_res(ret);
}
int io_read_mshot(struct io_kiocb *req, unsigned int issue_flags)
@@ -1078,8 +1084,10 @@ int io_read_mshot(struct io_kiocb *req,
return IOU_RETRY;
} else if (ret <= 0) {
io_kbuf_recycle(req, sel.buf_list, issue_flags);
- if (ret < 0)
+ if (ret < 0) {
+ ret = io_fixup_restart_res(ret);
req_set_fail(req);
+ }
} else if (!(req->flags & REQ_F_APOLL_MULTISHOT)) {
cflags = io_put_kbuf(req, ret, sel.buf_list);
} else {
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 530/675] iomap: fix out-of-bounds bitmap_set() with zero-length range
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (528 preceding siblings ...)
2026-07-30 14:14 ` [PATCH 6.18 529/675] io_uring/rw: fix missing ERESTARTSYS conversion in read paths Greg Kroah-Hartman
@ 2026-07-30 14:14 ` Greg Kroah-Hartman
2026-07-30 14:14 ` [PATCH 6.18 531/675] iommu/vt-d: Disallow SVA if page walk is not coherent Greg Kroah-Hartman
` (149 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:14 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Zhang Yi, Joanne Koong,
Darrick J. Wong, Christoph Hellwig, Christian Brauner (Amutable)
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Zhang Yi <yi.zhang@huawei.com>
commit 9c7d8f7c8994c790fca501dc45ce66e7356cbe05 upstream.
ifs_set_range_dirty() and ifs_set_range_uptodate() compute last_blk
as (off + len - 1) >> i_blkbits. When off is 0 and len is 0, the
unsigned subtraction underflows to SIZE_MAX, producing a huge
last_blk and nr_blks value that causes bitmap_set() to write far
beyond the ifs->state allocation.
Regarding ifs_set_range_uptodate(), it is temporarily safe because len
cannot be passed in as 0. However, for ifs_set_range_dirty() this is
reachable from __iomap_write_end(): when copy_folio_from_iter_atomic()
returns 0 (e.g. user buffer fault) and the folio is already uptodate,
the guard at the top of __iomap_write_end() does not trigger because
!folio_test_uptodate() is false, and iomap_set_range_dirty() is called
with copied == 0.
Add a !len guard to both functions before the computation, so that a
zero-length range is a no-op.
Fixes: 4ce02c679722 ("iomap: Add per-block dirty state tracking to improve performance")
Cc: stable@vger.kernel.org # v6.6
Signed-off-by: Zhang Yi <yi.zhang@huawei.com>
Link: https://patch.msgid.link/20260714082325.325163-5-yi.zhang@huaweicloud.com
Reviewed-by: Joanne Koong <joannelkoong@gmail.com>
Reviewed-by: "Darrick J. Wong" <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/iomap/buffered-io.c | 22 ++++++++++++++--------
1 file changed, 14 insertions(+), 8 deletions(-)
--- a/fs/iomap/buffered-io.c
+++ b/fs/iomap/buffered-io.c
@@ -47,11 +47,13 @@ static bool ifs_set_range_uptodate(struc
struct iomap_folio_state *ifs, size_t off, size_t len)
{
struct inode *inode = folio->mapping->host;
- unsigned int first_blk = off >> inode->i_blkbits;
- unsigned int last_blk = (off + len - 1) >> inode->i_blkbits;
- unsigned int nr_blks = last_blk - first_blk + 1;
+ unsigned int first_blk, last_blk;
- bitmap_set(ifs->state, first_blk, nr_blks);
+ if (len) {
+ first_blk = off >> inode->i_blkbits;
+ last_blk = (off + len - 1) >> inode->i_blkbits;
+ bitmap_set(ifs->state, first_blk, last_blk - first_blk + 1);
+ }
return ifs_is_fully_uptodate(folio, ifs);
}
@@ -154,13 +156,17 @@ static void ifs_set_range_dirty(struct f
{
struct inode *inode = folio->mapping->host;
unsigned int blks_per_folio = i_blocks_per_folio(inode, folio);
- unsigned int first_blk = (off >> inode->i_blkbits);
- unsigned int last_blk = (off + len - 1) >> inode->i_blkbits;
- unsigned int nr_blks = last_blk - first_blk + 1;
+ unsigned int first_blk, last_blk;
unsigned long flags;
+ if (!len)
+ return;
+
+ first_blk = off >> inode->i_blkbits;
+ last_blk = (off + len - 1) >> inode->i_blkbits;
spin_lock_irqsave(&ifs->state_lock, flags);
- bitmap_set(ifs->state, first_blk + blks_per_folio, nr_blks);
+ bitmap_set(ifs->state, first_blk + blks_per_folio,
+ last_blk - first_blk + 1);
spin_unlock_irqrestore(&ifs->state_lock, flags);
}
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 531/675] iommu/vt-d: Disallow SVA if page walk is not coherent
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (529 preceding siblings ...)
2026-07-30 14:14 ` [PATCH 6.18 530/675] iomap: fix out-of-bounds bitmap_set() with zero-length range Greg Kroah-Hartman
@ 2026-07-30 14:14 ` Greg Kroah-Hartman
2026-07-30 14:14 ` [PATCH 6.18 532/675] net: stmmac: intel: skip SerDes reconfig when rate is unchanged Greg Kroah-Hartman
` (148 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:14 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Lu Baolu, Kevin Tian,
Samiullah Khawaja, Jason Gunthorpe, Will Deacon
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Lu Baolu <baolu.lu@linux.intel.com>
commit 780dfed688622ea01be3c9c2c55eec2207f05e04 upstream.
Hardware implementations report Scalable-Mode Page-walk Coherency Support
via the SMPWCS field in the extended capability register. If the hardware
does not support page-walk coherency, a clflush is required every time
the page table entries (which are walked by the IOMMU hardware) are
updated.
In the SVA case, page tables are managed by the CPU mm core, not by the
IOMMU driver. Because the IOMMU driver has no way of knowing whether the
CPU page table management code has ensured coherency via clflush, the
driver must deny SVA if the hardware does not support coherent paging.
Fixes: ff3dc6521f78 ("iommu/vt-d: Fix CPU and IOMMU SVM feature matching checks")
Cc: stable@vger.kernel.org
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Reviewed-by: Samiullah Khawaja <skhawaja@google.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/iommu/intel/svm.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/iommu/intel/svm.c
+++ b/drivers/iommu/intel/svm.c
@@ -27,7 +27,7 @@
void intel_svm_check(struct intel_iommu *iommu)
{
- if (!pasid_supported(iommu))
+ if (!pasid_supported(iommu) || !ecap_smpwc(iommu->ecap))
return;
if (cpu_feature_enabled(X86_FEATURE_GBPAGES) &&
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 532/675] net: stmmac: intel: skip SerDes reconfig when rate is unchanged
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (530 preceding siblings ...)
2026-07-30 14:14 ` [PATCH 6.18 531/675] iommu/vt-d: Disallow SVA if page walk is not coherent Greg Kroah-Hartman
@ 2026-07-30 14:14 ` Greg Kroah-Hartman
2026-07-30 14:14 ` [PATCH 6.18 533/675] phonet: pep: fix use-after-free in pep_get_sb() Greg Kroah-Hartman
` (147 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:14 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Markus Breitenberger,
Maxime Chevallier, Jakub Kicinski
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Markus Breitenberger <bre@keba.com>
commit 0ab78ead2481adb52f9eb5b403865c529f6f2348 upstream.
intel_mac_finish() is registered as the phylink mac_finish()
callback for the Elkhart Lake SGMII ports. phylink calls it at
the end of every major link reconfiguration, including the
initial one during probe.
The callback selects the PMC ModPHY LCPLL programming for the
requested MAC-side interface and then power-cycles the SerDes.
On Elkhart Lake that ModPHY is also used by the on-die AHCI
SATA PHY. Reapplying the programming during the initial
boot-time link-up disturbs the shared analog block while it is
still driving SATA, so the SATA link fails to train:
ata1: SATA link down (SStatus 1 SControl 300)
The disk carrying the root filesystem is never detected and the
system hangs at rootwait. Ethernet itself comes up normally,
which makes the failure look unrelated to the network driver.
Before mac_finish() runs, the legacy SerDes power-up path has
already programmed SERDES_GCR0 for the current interface. The
1G and 2.5G ModPHY tables selected by mac_finish() correspond
to the SerDes lane rate, so read that rate back from SERDES_GCR0
and skip the PMC reprogramming and SerDes power-cycle when it
already matches the selected interface.
This keeps the disruptive reprogramming out of the boot path
when the SerDes is configured correctly, while preserving the
previous behavior when a real SGMII/1000BASE-X to 2500BASE-X
rate change is needed. If the register read fails, reconfigure
as before.
Fixes: a42f6b3f1cc1 ("net: stmmac: configure SerDes according to the interface mode")
Cc: stable@vger.kernel.org
Signed-off-by: Markus Breitenberger <bre@keba.com>
Reviewed-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Link: https://patch.msgid.link/20260713171619.192452-1-bre@breiti.cc
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/ethernet/stmicro/stmmac/dwmac-intel.c | 31 ++++++++++++++++++++++
1 file changed, 31 insertions(+)
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-intel.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-intel.c
@@ -524,6 +524,32 @@ static int intel_set_reg_access(const st
return ret;
}
+/*
+ * Return true if the SerDes lane rate must change to serve @interface.
+ * If the current rate cannot be determined, reconfigure as before.
+ */
+static bool intel_serdes_needs_reconfig(struct stmmac_priv *priv,
+ struct intel_priv_data *intel_priv,
+ phy_interface_t interface)
+{
+ u32 cur_rate, want_rate;
+ int data;
+
+ if (!intel_priv->mdio_adhoc_addr)
+ return true;
+
+ data = mdiobus_read(priv->mii, intel_priv->mdio_adhoc_addr,
+ SERDES_GCR0);
+ if (data < 0)
+ return true;
+
+ cur_rate = (data & SERDES_RATE_MASK) >> SERDES_RATE_PCIE_SHIFT;
+ want_rate = interface == PHY_INTERFACE_MODE_2500BASEX ?
+ SERDES_RATE_PCIE_GEN2 : SERDES_RATE_PCIE_GEN1;
+
+ return cur_rate != want_rate;
+}
+
static int intel_mac_finish(struct net_device *ndev,
void *intel_data,
unsigned int mode,
@@ -535,6 +561,11 @@ static int intel_mac_finish(struct net_d
int max_regs = 0;
int ret = 0;
+ if (!intel_serdes_needs_reconfig(priv, intel_priv, interface)) {
+ priv->plat->phy_interface = interface;
+ return 0;
+ }
+
ret = intel_tsn_lane_is_available(ndev, intel_priv);
if (ret < 0) {
netdev_info(priv->dev, "No TSN lane available to set the registers.\n");
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 533/675] phonet: pep: fix use-after-free in pep_get_sb()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (531 preceding siblings ...)
2026-07-30 14:14 ` [PATCH 6.18 532/675] net: stmmac: intel: skip SerDes reconfig when rate is unchanged Greg Kroah-Hartman
@ 2026-07-30 14:14 ` Greg Kroah-Hartman
2026-07-30 14:14 ` [PATCH 6.18 534/675] vxlan: require CAP_NET_ADMIN in the device netns for changelink Greg Kroah-Hartman
` (146 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:14 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Breno Leitao, Jakub Kicinski
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Breno Leitao <leitao@debian.org>
commit 0f71f852a96af9685858ce59fda34ecbf85c283d upstream.
pep_get_sb() doesn't consider that pskb_may_pull() might have relocated
the skb data, and continue to access the older pointer, causing UAF.
Reproduced under KASAN:
BUG: KASAN: slab-use-after-free in pep_get_sb+0x234/0x3b0
Read of size 1 at addr ff11000105510f50 by task repro/157
pep_get_sb+0x234/0x3b0
pipe_handler_do_rcv+0x5f7/0xa10
pep_do_rcv+0x203/0x410
__sk_receive_skb+0x471/0x4a0
phonet_rcv+0x5b3/0x6c0
__netif_receive_skb+0xcc/0x1d0
Refetch the header with skb_header_pointer() after pskb_may_pull(), so
the possibly stale pointer is no longer dereferenced. There are better
ways to solve this, but, this is the less instrusive one.
Fixes: 9641458d3ec4 ("Phonet: Pipe End Point for Phonet Pipes protocol")
Cc: stable@vger.kernel.org
Signed-off-by: Breno Leitao <leitao@debian.org>
Link: https://patch.msgid.link/20260721-phonet_get_sb_uaf-v1-1-95fd7881cc4e@debian.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/phonet/pep.c | 2 ++
1 file changed, 2 insertions(+)
--- a/net/phonet/pep.c
+++ b/net/phonet/pep.c
@@ -55,6 +55,8 @@ static unsigned char *pep_get_sb(struct
ph = skb_header_pointer(skb, 0, 2, &h);
if (ph == NULL || ph->sb_len < 2 || !pskb_may_pull(skb, ph->sb_len))
return NULL;
+ /* pskb_may_pull() may have reallocated the head; refetch ph. */
+ ph = skb_header_pointer(skb, 0, 2, &h);
ph->sb_len -= 2;
*ptype = ph->sb_type;
*plen = ph->sb_len;
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 534/675] vxlan: require CAP_NET_ADMIN in the device netns for changelink
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (532 preceding siblings ...)
2026-07-30 14:14 ` [PATCH 6.18 533/675] phonet: pep: fix use-after-free in pep_get_sb() Greg Kroah-Hartman
@ 2026-07-30 14:14 ` Greg Kroah-Hartman
2026-07-30 14:14 ` [PATCH 6.18 535/675] net: slip: serialize receive against buffer reallocation Greg Kroah-Hartman
` (145 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:14 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Doruk Tan Ozturk,
Fernando Fernandez Mancera, Jakub Kicinski
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Doruk Tan Ozturk <doruk@0sec.ai>
commit 3a61bd9637f3d929aa846e4eb3d98b48c26fcb0e upstream.
A tunnel changelink() operates on at most two netns, dev_net(dev) and
the sticky underlay netns vxlan->net. They differ once the device is
created in or moved to a netns other than the one the request runs in.
The rtnl changelink path checks CAP_NET_ADMIN only against dev_net(dev),
so a caller privileged there but not in vxlan->net can rewrite a vxlan
device whose underlay lives in vxlan->net.
vxlan_changelink() validates and applies the new configuration against
vxlan->net (vxlan_config_validate(vxlan->net, ...)) and can reopen the
underlay socket in that netns, so the same reasoning as the tunnel
changelink series applies here.
Gate vxlan_changelink() with rtnl_dev_link_net_capable(), at the top of
the op before any attribute is parsed, matching ipgre_changelink() and
the rest of the "require CAP_NET_ADMIN in the device netns for
changelink" series.
Found by 0sec automated security-research tooling (https://0sec.ai).
Fixes: 8bcdc4f3a20b ("vxlan: add changelink support")
Cc: stable@vger.kernel.org
Signed-off-by: Doruk Tan Ozturk <doruk@0sec.ai>
Reviewed-by: Fernando Fernandez Mancera <fmancera@suse.de>
Link: https://patch.msgid.link/20260716203500.70573-2-doruk@0sec.ai
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/vxlan/vxlan_core.c | 3 +++
1 file changed, 3 insertions(+)
--- a/drivers/net/vxlan/vxlan_core.c
+++ b/drivers/net/vxlan/vxlan_core.c
@@ -4415,6 +4415,9 @@ static int vxlan_changelink(struct net_d
struct vxlan_rdst *dst;
int err;
+ if (!rtnl_dev_link_net_capable(dev, vxlan->net))
+ return -EPERM;
+
dst = &vxlan->default_dst;
err = vxlan_nl2conf(tb, data, dev, &conf, true, extack);
if (err)
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 535/675] net: slip: serialize receive against buffer reallocation
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (533 preceding siblings ...)
2026-07-30 14:14 ` [PATCH 6.18 534/675] vxlan: require CAP_NET_ADMIN in the device netns for changelink Greg Kroah-Hartman
@ 2026-07-30 14:14 ` Greg Kroah-Hartman
2026-07-30 14:14 ` [PATCH 6.18 536/675] geneve: require CAP_NET_ADMIN in the device netns for changelink Greg Kroah-Hartman
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From: Greg Kroah-Hartman @ 2026-07-30 14:14 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Sungmin Kang, Jakub Kicinski
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Sungmin Kang <726ksm@gmail.com>
commit ee7f9bb9320add61f7b367d7e6cd55e3a3a4d65d upstream.
sl_realloc_bufs() replaces rbuff and updates buffsize while holding
sl->lock. slip_receive_buf() reads those fields and writes through rbuff
without holding the lock.
An MTU change can therefore race with receive processing. An MTU shrink
can expose the new smaller rbuff with the old larger bound, causing an
out-of-bounds write. A receive callback which already loaded the old
rbuff can instead continue writing after that buffer has been freed.
Serialize receive processing with sl_realloc_bufs() by holding sl->lock
while consuming each receive batch.
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Cc: stable@vger.kernel.org
Signed-off-by: Sungmin Kang <726ksm@gmail.com>
Link: https://patch.msgid.link/20260718073631.1674-1-726ksm@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/slip/slip.c | 4 ++++
1 file changed, 4 insertions(+)
--- a/drivers/net/slip/slip.c
+++ b/drivers/net/slip/slip.c
@@ -693,6 +693,8 @@ static void slip_receive_buf(struct tty_
if (!sl || sl->magic != SLIP_MAGIC || !netif_running(sl->dev))
return;
+ spin_lock_bh(&sl->lock);
+
/* Read the characters out of the buffer */
while (count--) {
if (fp && *fp++) {
@@ -708,6 +710,8 @@ static void slip_receive_buf(struct tty_
#endif
slip_unesc(sl, *cp++);
}
+
+ spin_unlock_bh(&sl->lock);
}
/************************************
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 536/675] geneve: require CAP_NET_ADMIN in the device netns for changelink
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (534 preceding siblings ...)
2026-07-30 14:14 ` [PATCH 6.18 535/675] net: slip: serialize receive against buffer reallocation Greg Kroah-Hartman
@ 2026-07-30 14:14 ` Greg Kroah-Hartman
2026-07-30 14:14 ` [PATCH 6.18 537/675] net/af_iucv: fix NULL deref in afiucv_hs_callback_syn() Greg Kroah-Hartman
` (143 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:14 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Doruk Tan Ozturk,
Fernando Fernandez Mancera, Jakub Kicinski
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Doruk Tan Ozturk <doruk@0sec.ai>
commit 8efb8f8bbb353b8f2fdf4f37534c6d96c9f69e01 upstream.
A tunnel changelink() operates on at most two netns, dev_net(dev) and
the sticky underlay netns geneve->net. They differ once the device is
created in or moved to a netns other than the one the request runs in.
The rtnl changelink path checks CAP_NET_ADMIN only against dev_net(dev),
so a caller privileged there but not in geneve->net can rewrite a geneve
device whose underlay lives in geneve->net.
geneve_changelink() applies the new configuration against geneve->net:
geneve_link_config() and the geneve_quiesce()/geneve_unquiesce() pair
reopen the underlay sockets in that netns (geneve_sock_add() uses
geneve->net), so the same reasoning as the tunnel changelink series
applies here.
Gate geneve_changelink() with rtnl_dev_link_net_capable(), at the top of
the op before any attribute is parsed, matching ipgre_changelink() and
the rest of the "require CAP_NET_ADMIN in the device netns for
changelink" series.
Found by 0sec automated security-research tooling (https://0sec.ai).
Fixes: 5b861f6baa3a ("geneve: add rtnl changelink support")
Cc: stable@vger.kernel.org
Signed-off-by: Doruk Tan Ozturk <doruk@0sec.ai>
Reviewed-by: Fernando Fernandez Mancera <fmancera@suse.de>
Link: https://patch.msgid.link/20260716203500.70573-3-doruk@0sec.ai
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/geneve.c | 3 +++
1 file changed, 3 insertions(+)
--- a/drivers/net/geneve.c
+++ b/drivers/net/geneve.c
@@ -1736,6 +1736,9 @@ static int geneve_changelink(struct net_
struct geneve_config cfg;
int err;
+ if (!rtnl_dev_link_net_capable(dev, geneve->net))
+ return -EPERM;
+
/* If the geneve device is configured for metadata (or externally
* controlled, for example, OVS), then nothing can be changed.
*/
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 537/675] net/af_iucv: fix NULL deref in afiucv_hs_callback_syn()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (535 preceding siblings ...)
2026-07-30 14:14 ` [PATCH 6.18 536/675] geneve: require CAP_NET_ADMIN in the device netns for changelink Greg Kroah-Hartman
@ 2026-07-30 14:14 ` Greg Kroah-Hartman
2026-07-30 14:14 ` [PATCH 6.18 538/675] net/iucv: fix use-after-free of a severed iucv_path Greg Kroah-Hartman
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From: Greg Kroah-Hartman @ 2026-07-30 14:14 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Alexandra Winter, Hidayath Khan,
Jakub Kicinski
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Hidayath Khan <hidayath@linux.ibm.com>
commit 47a5116e56a6b6fe1e909f244e39cd0fc26ceee4 upstream.
afiucv_hs_callback_syn() allocates the child socket with GFP_ATOMIC.
If the allocation fails, nsk is NULL.
The connection-refused path is entered when the listen state check
fails, the accept backlog is full, or nsk is NULL. The code
unconditionally calls iucv_sock_kill(nsk) in that path.
iucv_sock_kill() does not accept a NULL socket pointer and immediately
dereferences sk via sock_flag(sk, SOCK_ZAPPED). When nsk is NULL,
calling iucv_sock_kill(nsk) results in a NULL pointer dereference.
Only call iucv_sock_kill() when a child socket was successfully
allocated.
Fixes: 3881ac441f64 ("af_iucv: add HiperSockets transport")
Cc: stable@vger.kernel.org
Reviewed-by: Alexandra Winter <wintera@linux.ibm.com>
Signed-off-by: Hidayath Khan <hidayath@linux.ibm.com>
Link: https://patch.msgid.link/20260709191732.124092-1-hidayath@linux.ibm.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/iucv/af_iucv.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/net/iucv/af_iucv.c
+++ b/net/iucv/af_iucv.c
@@ -1872,7 +1872,8 @@ static int afiucv_hs_callback_syn(struct
afiucv_swap_src_dest(skb);
trans_hdr->flags = AF_IUCV_FLAG_SYN | AF_IUCV_FLAG_FIN;
err = dev_queue_xmit(skb);
- iucv_sock_kill(nsk);
+ if (nsk)
+ iucv_sock_kill(nsk);
bh_unlock_sock(sk);
goto out;
}
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 538/675] net/iucv: fix use-after-free of a severed iucv_path
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (536 preceding siblings ...)
2026-07-30 14:14 ` [PATCH 6.18 537/675] net/af_iucv: fix NULL deref in afiucv_hs_callback_syn() Greg Kroah-Hartman
@ 2026-07-30 14:14 ` Greg Kroah-Hartman
2026-07-30 14:14 ` [PATCH 6.18 539/675] net/mlx5e: Use sender devcom for MPV master-up Greg Kroah-Hartman
` (141 subsequent siblings)
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From: Greg Kroah-Hartman @ 2026-07-30 14:14 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Bryam Vargas, Paolo Abeni
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Bryam Vargas <hexlabsecurity@proton.me>
commit be7cc4656eb1f54029610e82d1f0fdd3f9b5ec0a upstream.
af_iucv queues not-yet-received message notifications on iucv->message_q,
each holding a raw pointer to the connection's iucv_path. When the peer
severs the connection, iucv_sever_path() frees that path with
iucv_path_free() but leaves the notifications queued. A later recvmsg()
drains message_q via iucv_process_message_q() and hands the stale path to
message_receive() -- a use-after-free of the freed iucv_path.
Drop the queued notifications when the path is severed; once the path is
gone they can no longer be received. This also frees the notifications
leaked when a socket is closed with messages still queued.
Fixes: f0703c80e515 ("[AF_IUCV]: postpone receival of iucv-packets")
Closes: https://sashiko.dev/#/patchset/20260705-b4-disp-fc79c0dc-v1-1-d2cdcb57afa9@proton.me?part=1
Cc: stable@vger.kernel.org
Signed-off-by: Bryam Vargas <hexlabsecurity@proton.me>
Link: https://patch.msgid.link/20260707-b4-disp-783fedbb-v1-1-463b9dbda2ea@proton.me
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/iucv/af_iucv.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
--- a/net/iucv/af_iucv.c
+++ b/net/iucv/af_iucv.c
@@ -335,6 +335,7 @@ static void iucv_sever_path(struct sock
unsigned char user_data[16];
struct iucv_sock *iucv = iucv_sk(sk);
struct iucv_path *path = iucv->path;
+ struct sock_msg_q *p, *n;
/* Whoever resets the path pointer, must sever and free it. */
if (xchg(&iucv->path, NULL)) {
@@ -346,6 +347,19 @@ static void iucv_sever_path(struct sock
} else
pr_iucv->path_sever(path, NULL);
iucv_path_free(path);
+
+ /*
+ * Message notifications queued on message_q still reference
+ * the now freed path; drop them, otherwise a later recvmsg()
+ * would pass the freed iucv_path to message_receive() via
+ * iucv_process_message_q().
+ */
+ spin_lock_bh(&iucv->message_q.lock);
+ list_for_each_entry_safe(p, n, &iucv->message_q.list, list) {
+ list_del(&p->list);
+ kfree(p);
+ }
+ spin_unlock_bh(&iucv->message_q.lock);
}
}
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 539/675] net/mlx5e: Use sender devcom for MPV master-up
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (537 preceding siblings ...)
2026-07-30 14:14 ` [PATCH 6.18 538/675] net/iucv: fix use-after-free of a severed iucv_path Greg Kroah-Hartman
@ 2026-07-30 14:14 ` Greg Kroah-Hartman
2026-07-30 14:14 ` [PATCH 6.18 540/675] net/x25: fix use-after-free in x25_kill_by_neigh() Greg Kroah-Hartman
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From: Greg Kroah-Hartman @ 2026-07-30 14:14 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Manjunath Patil, Tariq Toukan,
Paolo Abeni
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Manjunath Patil <manjunath.b.patil@oracle.com>
commit e32649b4bad90a6216d8e93cd7dd050af8ac9740 upstream.
After PCIe DPC recovery, mlx5 reloads the affected functions and
replays multiport affiliation events. In the reported failure, the
first relevant device error was:
pcieport 0000:10:01.1: DPC: containment event
pcieport 0000:10:01.1: PCIe Bus Error: severity=Uncorrected (Fatal)
pcieport 0000:10:01.1: [ 5] SDES (First)
mlx5 recovered the PCI functions and resumed 0000:11:00.1. During
that resume, RDMA multiport binding replayed
MLX5_DRIVER_EVENT_AFFILIATION_DONE and mlx5e sent
MPV_DEVCOM_MASTER_UP. The host then panicked with:
BUG: kernel NULL pointer dereference, address: 0000000000000010
RIP: mlx5_devcom_comp_set_ready+0x5/0x40 [mlx5_core]
RDI: 0000000000000000
Call trace included:
mlx5_devcom_comp_set_ready
mlx5e_devcom_event_mpv
mlx5_devcom_send_event
mlx5_ib_bind_slave_port
mlx5r_mp_probe
mlx5_pci_resume
MPV devcom registration publishes mlx5e private data to the component
peer list before mlx5e_devcom_init_mpv() stores the returned component
device in priv->devcom. A concurrent master-up event can therefore
reach a peer whose private data is visible but whose priv->devcom
backpointer is still NULL.
MPV_DEVCOM_MASTER_UP already carries the sender/master mlx5e private
data as event_data. The ready bit is stored on the shared devcom
component, not on an individual peer. Use the sender devcom when
marking the MPV component ready.
This preserves the readiness transition while avoiding a NULL
dereference of the peer devcom pointer during affiliation replay after
PCI error recovery.
Fixes: bf11485f8419 ("net/mlx5: Register mlx5e priv to devcom in MPV mode")
Assisted-by: Codex:gpt-5
Signed-off-by: Manjunath Patil <manjunath.b.patil@oracle.com>
Cc: stable@vger.kernel.org # 6.7+
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/20260707233911.3651139-1-manjunath.b.patil@oracle.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/ethernet/mellanox/mlx5/core/en_main.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
@@ -211,11 +211,11 @@ static void mlx5e_disable_async_events(s
static int mlx5e_devcom_event_mpv(int event, void *my_data, void *event_data)
{
- struct mlx5e_priv *slave_priv = my_data;
+ struct mlx5e_priv *master_priv = event_data;
switch (event) {
case MPV_DEVCOM_MASTER_UP:
- mlx5_devcom_comp_set_ready(slave_priv->devcom, true);
+ mlx5_devcom_comp_set_ready(master_priv->devcom, true);
break;
case MPV_DEVCOM_MASTER_DOWN:
/* no need for comp set ready false since we unregister after
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 540/675] net/x25: fix use-after-free in x25_kill_by_neigh()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (538 preceding siblings ...)
2026-07-30 14:14 ` [PATCH 6.18 539/675] net/mlx5e: Use sender devcom for MPV master-up Greg Kroah-Hartman
@ 2026-07-30 14:14 ` Greg Kroah-Hartman
2026-07-30 14:14 ` [PATCH 6.18 541/675] net: gro: fix double aggregation of flush-marked skbs Greg Kroah-Hartman
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From: Greg Kroah-Hartman @ 2026-07-30 14:14 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, David Lee, Martin Schiller,
Paolo Abeni
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: David Lee <david.lee@trailofbits.com>
commit 5499e0602d2faafd42c580d25f615903c3fbe11b upstream.
x25_kill_by_neigh() walks the global X.25 socket list looking for sockets
attached to a terminating neighbour. x25_list_lock protects list membership
while the lookup is in progress, but it does not pin a socket's lifetime
after the lock is dropped.
The function currently drops x25_list_lock before calling lock_sock(s). A
concurrent close can run x25_release(), remove the same socket from
x25_list, and drop the last socket reference in that window. The neighbour
teardown path can then lock or inspect a freed struct sock/struct x25_sock.
Take sock_hold(s) while x25_list_lock still proves that the list entry is
live, then drop the temporary reference after the socket has been locked,
rechecked, and released. Recheck x25_sk(s)->neighbour after lock_sock(),
because another path may have disconnected the socket before this path
acquired the socket lock. Restart the list walk after each disconnect
because the list lock was dropped and the previous iterator state may no
longer be valid.
A QEMU/KASAN run against origin/master reproduced a slab-use-after-free in
x25_kill_by_neigh().
Fixes: 7781607938c8 ("net/x25: Fix null-ptr-deref caused by x25_disconnect")
Cc: stable@vger.kernel.org
Signed-off-by: David Lee <david.lee@trailofbits.com>
Assisted-by: Codex:gpt-5.5
Acked-by: Martin Schiller <ms@dev.tdt.de>
Link: https://patch.msgid.link/20260713104752.241175-1-david.lee@trailofbits.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/x25/af_x25.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
--- a/net/x25/af_x25.c
+++ b/net/x25/af_x25.c
@@ -1772,15 +1772,19 @@ void x25_kill_by_neigh(struct x25_neigh
{
struct sock *s;
+again:
write_lock_bh(&x25_list_lock);
sk_for_each(s, &x25_list) {
if (x25_sk(s)->neighbour == nb) {
+ sock_hold(s);
write_unlock_bh(&x25_list_lock);
lock_sock(s);
- x25_disconnect(s, ENETUNREACH, 0, 0);
+ if (x25_sk(s)->neighbour == nb)
+ x25_disconnect(s, ENETUNREACH, 0, 0);
release_sock(s);
- write_lock_bh(&x25_list_lock);
+ sock_put(s);
+ goto again;
}
}
write_unlock_bh(&x25_list_lock);
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 541/675] net: gro: fix double aggregation of flush-marked skbs
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (539 preceding siblings ...)
2026-07-30 14:14 ` [PATCH 6.18 540/675] net/x25: fix use-after-free in x25_kill_by_neigh() Greg Kroah-Hartman
@ 2026-07-30 14:14 ` Greg Kroah-Hartman
2026-07-30 14:14 ` [PATCH 6.18 542/675] net: hip04: fix RX buffer leak on build_skb failure Greg Kroah-Hartman
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From: Greg Kroah-Hartman @ 2026-07-30 14:14 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Shiming Cheng, Willem de Bruijn,
Jakub Kicinski
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Shiming Cheng <shiming.cheng@mediatek.com>
commit e751256486d0ded20f5a9f9863467f1dce65142f upstream.
Commit 0ab03f353d36 ("net-gro: Fix GRO flush when receiving a GSO
packet.") added a flush check to skb_gro_receive(), but
skb_gro_receive_list() lacks the same validation.
As a result, packets marked with NAPI_GRO_CB(skb)->flush may still be
re-aggregated.
This allows already-GRO'd packets with existing frag_list to be
re-aggregated into a new GRO session, corrupting the frag_list chain
structure. When skb_segment() attempts to unpack these malformed packets,
it encounters invalid state and triggers a kernel panic.
Scenario (Tethering/Device forwarding):
1. Driver: Generated aggregated packet P1 via LRO with frag_list
2. Dev A: Receives aggregated fraglist packet and flush flag set
3. Dev A: Re-enters GRO, skb_gro_receive_list() is called
4. Missing flush check allows re-aggregation despite flush flag
5. Frag_list chain becomes corrupted (loops or dangling refs)
6. Dev B: TX path calls skb_segment(), crashes on corrupted frag_list
Root cause in skb_segment():
The check at line ~4891:
if (hsize <= 0 && i >= nfrags && skb_headlen(list_skb) &&
(skb_headlen(list_skb) == len || sg)) {
When frag_list is corrupted by double aggregation, when list_skb is
a NULL pointer from skb->next, skb_headlen(list_skb) dereference
NULL/corrupted pointers occurs.
Call Trace:
skb_headlen(NULL skb)
skb_segment
tcp_gso_segment
tcp4_gso_segment
inet_gso_segment
skb_mac_gso_segment
__skb_gso_segment
skb_gso_segment
validate_xmit_skb
validate_xmit_skb_list
sch_direct_xmit
qdisc_restart
__qdisc_run
qdisc_run
net_tx_action
Fix: Add NAPI_GRO_CB(skb)->flush validation to the early-return check in
skb_gro_receive_list(), matching the defensive programming pattern of
skb_gro_receive().
Fixes: 3a1296a38d0c ("net: Support GRO/GSO fraglist chaining.")
Cc: stable@vger.kernel.org
Signed-off-by: Shiming Cheng <shiming.cheng@mediatek.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Link: https://patch.msgid.link/20260709014704.3625-1-shiming.cheng@mediatek.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/core/gro.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--- a/net/core/gro.c
+++ b/net/core/gro.c
@@ -231,7 +231,9 @@ done:
int skb_gro_receive_list(struct sk_buff *p, struct sk_buff *skb)
{
- if (unlikely(p->len + skb->len >= 65536))
+ /* make sure to check flush flag and to not merge */
+ if (unlikely(p->len + skb->len >= 65536 ||
+ NAPI_GRO_CB(skb)->flush))
return -E2BIG;
if (!pskb_may_pull(skb, skb_gro_offset(skb))) {
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 542/675] net: hip04: fix RX buffer leak on build_skb failure
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (540 preceding siblings ...)
2026-07-30 14:14 ` [PATCH 6.18 541/675] net: gro: fix double aggregation of flush-marked skbs Greg Kroah-Hartman
@ 2026-07-30 14:14 ` Greg Kroah-Hartman
2026-07-30 14:14 ` [PATCH 6.18 543/675] net: pcs: xpcs: fix SGMII state reading Greg Kroah-Hartman
` (137 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:14 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Fan Wu, Jacob Keller, Jakub Kicinski
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Fan Wu <fanwu01@zju.edu.cn>
commit 14fa65d10f5696b063a7d8d26e8291ea84a2c6ed upstream.
When build_skb() fails in hip04_rx_poll(), the driver jumps to the
refill path without releasing the current RX buffer and its DMA mapping.
Installing a replacement buffer then overwrites the slot references and
leaks both resources.
Keep the current slot intact and return budget so NAPI retries the same
buffer. Also free a newly allocated RX fragment when dma_map_single()
fails.
This issue was found by an in-house static analysis tool.
Fixes: 701a0fd52318 ("hip04_eth: fix missing error handle for build_skb failed")
Cc: stable@vger.kernel.org
Signed-off-by: Fan Wu <fanwu01@zju.edu.cn>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Link: https://patch.msgid.link/20260712142729.2057636-1-fanwu01@zju.edu.cn
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/ethernet/hisilicon/hip04_eth.c | 11 ++++++++---
1 file changed, 8 insertions(+), 3 deletions(-)
--- a/drivers/net/ethernet/hisilicon/hip04_eth.c
+++ b/drivers/net/ethernet/hisilicon/hip04_eth.c
@@ -594,7 +594,11 @@ static int hip04_rx_poll(struct napi_str
skb = build_skb(buf, priv->rx_buf_size);
if (unlikely(!skb)) {
net_dbg_ratelimited("build_skb failed\n");
- goto refill;
+ /* Retain the slot; return budget so NAPI retries this
+ * buffer. Refill would overwrite rx_buf[]/rx_phys[]
+ * and leak them.
+ */
+ return budget;
}
dma_unmap_single(priv->dev, priv->rx_phys[priv->rx_head],
@@ -622,14 +626,15 @@ static int hip04_rx_poll(struct napi_str
rx++;
}
-refill:
buf = netdev_alloc_frag(priv->rx_buf_size);
if (!buf)
goto done;
phys = dma_map_single(priv->dev, buf,
RX_BUF_SIZE, DMA_FROM_DEVICE);
- if (dma_mapping_error(priv->dev, phys))
+ if (dma_mapping_error(priv->dev, phys)) {
+ skb_free_frag(buf);
goto done;
+ }
priv->rx_buf[priv->rx_head] = buf;
priv->rx_phys[priv->rx_head] = phys;
hip04_set_recv_desc(priv, phys);
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 543/675] net: pcs: xpcs: fix SGMII state reading
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (541 preceding siblings ...)
2026-07-30 14:14 ` [PATCH 6.18 542/675] net: hip04: fix RX buffer leak on build_skb failure Greg Kroah-Hartman
@ 2026-07-30 14:14 ` Greg Kroah-Hartman
2026-07-30 14:14 ` [PATCH 6.18 544/675] proc: Fix broken error paths for namespace links Greg Kroah-Hartman
` (136 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:14 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Jiawen Wu, Coia Prant,
Maxime Chevallier, Jakub Kicinski
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Coia Prant <coiaprant@gmail.com>
commit def9a4745e105145133e442dd8a1c126caf0f553 upstream.
Commit 2a22b7ae2fa3 ("net: pcs: xpcs: adapt Wangxun NICs for SGMII mode")
added a path in xpcs_get_state_c37_sgmii() that reads speed/duplex from
BMCR after AN completes. However, BMCR does not reflect the negotiated
result on the hardware where this has been tested:
- On RK3568 (MAC side SGMII), BMCR returns a fixed hardware reset value
- Wangxun engineer Jiawen Wu confirmed that on their side, "BMCR looks
like it only wants to be return as 0" [0]
The correct information is available in CL37_ANSGM_STS, which contains
the actual link status and negotiated speed/duplex.
This bug was previously masked by phylink core, which overrides the PCS
link state with the PHY state when a PHY is present:
/* If we have a phy, the "up" state is the union of both the
* PHY and the MAC
*/
if (phy)
link_state.link &= pl->phy_state.link;
Thus, when the link is down, the PHY's link_down state is applied on top
of whatever the PCS reports, hiding the broken PCS state reading path.
Modify xpcs_get_state_c37_sgmii() to:
1. Read link state from CL37_ANSGM_STS
2. If link is up, report speed/duplex from CL37_ANSGM_STS
3. Remove the broken BMCR reading path entirely
Also properly set state->an_complete to reflect the AN completion status,
and clear CL37_ANCMPLT_INTR when link is down to avoid stale state.
[0] https://lore.kernel.org/all/000c01dd1593$2ac0b0f0$804212d0$@trustnetic.com/
Fixes: 2a22b7ae2fa3 ("net: pcs: xpcs: adapt Wangxun NICs for SGMII mode")
Cc: stable@vger.kernel.org
Tested-by: Jiawen Wu <jiawenwu@trustnetic.com>
Signed-off-by: Coia Prant <coiaprant@gmail.com>
Tested-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Reviewed-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Link: https://patch.msgid.link/20260717074324.3250043-2-coiaprant@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/pcs/pcs-xpcs.c | 32 +++++++-------------------------
1 file changed, 7 insertions(+), 25 deletions(-)
--- a/drivers/net/pcs/pcs-xpcs.c
+++ b/drivers/net/pcs/pcs-xpcs.c
@@ -958,6 +958,7 @@ static int xpcs_get_state_c37_sgmii(stru
/* Reset link_state */
state->link = false;
+ state->an_complete = false;
state->speed = SPEED_UNKNOWN;
state->duplex = DUPLEX_UNKNOWN;
state->pause = 0;
@@ -969,6 +970,8 @@ static int xpcs_get_state_c37_sgmii(stru
if (ret < 0)
return ret;
+ state->an_complete = ret & DW_VR_MII_AN_STS_C37_ANCMPLT_INTR;
+
if (ret & DW_VR_MII_C37_ANSGM_SP_LNKSTS) {
int speed_value;
@@ -986,34 +989,13 @@ static int xpcs_get_state_c37_sgmii(stru
state->duplex = DUPLEX_FULL;
else
state->duplex = DUPLEX_HALF;
- } else if (ret == DW_VR_MII_AN_STS_C37_ANCMPLT_INTR) {
- int speed, duplex;
-
- state->link = true;
-
- speed = xpcs_read(xpcs, MDIO_MMD_VEND2, MII_BMCR);
- if (speed < 0)
- return speed;
- speed &= BMCR_SPEED100 | BMCR_SPEED1000;
- if (speed == BMCR_SPEED1000)
- state->speed = SPEED_1000;
- else if (speed == BMCR_SPEED100)
- state->speed = SPEED_100;
- else if (speed == 0)
- state->speed = SPEED_10;
-
- duplex = xpcs_read(xpcs, MDIO_MMD_VEND2, MII_ADVERTISE);
- if (duplex < 0)
- return duplex;
-
- if (duplex & ADVERTISE_1000XFULL)
- state->duplex = DUPLEX_FULL;
- else if (duplex & ADVERTISE_1000XHALF)
- state->duplex = DUPLEX_HALF;
+ return 0;
+ }
+ /* Clear AN complete status or interrupt */
+ if (state->an_complete)
xpcs_write(xpcs, MDIO_MMD_VEND2, DW_VR_MII_AN_INTR_STS, 0);
- }
return 0;
}
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 544/675] proc: Fix broken error paths for namespace links
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (542 preceding siblings ...)
2026-07-30 14:14 ` [PATCH 6.18 543/675] net: pcs: xpcs: fix SGMII state reading Greg Kroah-Hartman
@ 2026-07-30 14:14 ` Greg Kroah-Hartman
2026-07-30 14:14 ` [PATCH 6.18 545/675] ptp: ptp_s390: Add missing facility check Greg Kroah-Hartman
` (135 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:14 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Magnus Lindholm, Jann Horn,
Christian Brauner (Amutable)
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jann Horn <jannh@google.com>
commit 425224c2d700391729be7fe6929a88ef4e2d7a4e upstream.
Don't return the return value of down_read_killable() (0) when a ptrace
access check fails, return -EACCES as intended.
Reported-by: Magnus Lindholm <linmag7@gmail.com>
Closes: https://lore.kernel.org/r/20260706170735.2941493-1-linmag7@gmail.com
Fixes: 6650527444da ("proc: protect ptrace_may_access() with exec_update_lock (part 1)")
Cc: stable@vger.kernel.org
Signed-off-by: Jann Horn <jannh@google.com>
Link: https://patch.msgid.link/20260706-procfs-ns-eacces-fix-v1-1-a69ab14c02e6@google.com
Tested-by: Magnus Lindholm <linmag7@gmail.com>
Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/proc/namespaces.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--- a/fs/proc/namespaces.c
+++ b/fs/proc/namespaces.c
@@ -46,7 +46,7 @@ static const char *proc_ns_get_link(stru
const struct proc_ns_operations *ns_ops = PROC_I(inode)->ns_ops;
struct task_struct *task;
struct path ns_path;
- int error = -EACCES;
+ int error;
if (!dentry)
return ERR_PTR(-ECHILD);
@@ -59,6 +59,7 @@ static const char *proc_ns_get_link(stru
if (error)
goto out_put_task;
+ error = -EACCES;
if (!ptrace_may_access(task, PTRACE_MODE_READ_FSCREDS))
goto out;
@@ -90,6 +91,7 @@ static int proc_ns_readlink(struct dentr
if (res)
goto out_put_task;
+ res = -EACCES;
if (ptrace_may_access(task, PTRACE_MODE_READ_FSCREDS)) {
res = ns_get_name(name, sizeof(name), task, ns_ops);
if (res >= 0)
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 545/675] ptp: ptp_s390: Add missing facility check
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (543 preceding siblings ...)
2026-07-30 14:14 ` [PATCH 6.18 544/675] proc: Fix broken error paths for namespace links Greg Kroah-Hartman
@ 2026-07-30 14:14 ` Greg Kroah-Hartman
2026-07-30 14:14 ` [PATCH 6.18 546/675] ice: fix PTP Call Trace during PTP release Greg Kroah-Hartman
` (134 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:14 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Sven Schnelle, stable,
Heiko Carstens, Jakub Kicinski
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Sven Schnelle <svens@linux.ibm.com>
commit e78f1ac37afcb16cb6fef8a2c92591eab6558956 upstream.
Only register the physical clock when facility 28 is installed
and PTFF QAF returns that PTFF QPT is available.
Fixes: 2d7de7a3010d ("s390/time: Add PtP driver")
Signed-off-by: Sven Schnelle <svens@linux.ibm.com>
Cc: stable@kernel.org
Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Link: https://patch.msgid.link/20260714130342.1971700-3-svens@linux.ibm.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/ptp/ptp_s390.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
--- a/drivers/ptp/ptp_s390.c
+++ b/drivers/ptp/ptp_s390.c
@@ -107,6 +107,9 @@ static __init int ptp_s390_init(void)
if (IS_ERR(ptp_stcke_clock))
return PTR_ERR(ptp_stcke_clock);
+ if (!test_facility(28) || !ptff_query(PTFF_QPT))
+ return 0;
+
ptp_qpt_clock = ptp_clock_register(&ptp_s390_qpt_info, NULL);
if (IS_ERR(ptp_qpt_clock)) {
ptp_clock_unregister(ptp_stcke_clock);
@@ -117,7 +120,8 @@ static __init int ptp_s390_init(void)
static __exit void ptp_s390_exit(void)
{
- ptp_clock_unregister(ptp_qpt_clock);
+ if (ptp_qpt_clock)
+ ptp_clock_unregister(ptp_qpt_clock);
ptp_clock_unregister(ptp_stcke_clock);
}
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 546/675] ice: fix PTP Call Trace during PTP release
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (544 preceding siblings ...)
2026-07-30 14:14 ` [PATCH 6.18 545/675] ptp: ptp_s390: Add missing facility check Greg Kroah-Hartman
@ 2026-07-30 14:14 ` Greg Kroah-Hartman
2026-07-30 14:14 ` [PATCH 6.18 547/675] selftests/ftrace: Reset triggers at top level before instance loop Greg Kroah-Hartman
` (133 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:14 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Paul Greenwalt, Aleksandr Loktionov,
Simon Horman, Tony Nguyen, Jakub Kicinski, Rinitha S
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Paul Greenwalt <paul.greenwalt@intel.com>
commit f6a7e00b81e35ef1325234925f2fe1e53b466f92 upstream.
If a PF reset occurs when the PTP state is ICE_PTP_UNINIT, then
ice_ptp_rebuild() will update the state to ICE_PTP_ERROR. This will
result in the following PTP release call trace during driver unload:
kernel BUG at lib/list_debug.c:52!
ice_ptp_release+0x332/0x3c0 [ice]
ice_deinit_features.part.0+0x10e/0x120 [ice]
ice_remove+0x100/0x220 [ice]
This was observed when passing PF1 through to a VM. ice_ptp_init()
fails because ctrl_pf is NULL and sets the state to ICE_PTP_UNINIT.
Fix by detecting the ICE_PTP_UNINIT state in ice_ptp_rebuild() and
returning without error, preventing the invalid state transition to
ICE_PTP_ERROR. The only valid path to ICE_PTP_ERROR is from
ICE_PTP_RESETTING after a failed rebuild.
Fixes: 8293e4cb2ff5 ("ice: introduce PTP state machine")
Cc: stable@vger.kernel.org
Signed-off-by: Paul Greenwalt <paul.greenwalt@intel.com>
Signed-off-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Tested-by: Rinitha S <sx.rinitha@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Link: https://patch.msgid.link/20260717185340.3595286-10-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/ethernet/intel/ice/ice_ptp.c | 5 +++++
1 file changed, 5 insertions(+)
--- a/drivers/net/ethernet/intel/ice/ice_ptp.c
+++ b/drivers/net/ethernet/intel/ice/ice_ptp.c
@@ -2994,6 +2994,11 @@ void ice_ptp_rebuild(struct ice_pf *pf,
struct ice_ptp *ptp = &pf->ptp;
int err;
+ if (ptp->state == ICE_PTP_UNINIT) {
+ dev_dbg(ice_pf_to_dev(pf), "PTP was not initialized, skipping rebuild\n");
+ return;
+ }
+
if (ptp->state == ICE_PTP_READY) {
ice_ptp_prepare_for_reset(pf, reset_type);
} else if (ptp->state != ICE_PTP_RESETTING) {
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 547/675] selftests/ftrace: Reset triggers at top level before instance loop
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (545 preceding siblings ...)
2026-07-30 14:14 ` [PATCH 6.18 546/675] ice: fix PTP Call Trace during PTP release Greg Kroah-Hartman
@ 2026-07-30 14:14 ` Greg Kroah-Hartman
2026-07-30 14:14 ` [PATCH 6.18 548/675] super: fix emergency thaw deadlock on frozen block devices Greg Kroah-Hartman
` (132 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:14 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Masami Hiramatsu (Google),
Steven Rostedt
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Masami Hiramatsu (Google) <mhiramat@kernel.org>
commit 1a087033a6bad73b4140020b40e819b0933aafc3 upstream.
When running instance tests, 'ftracetest' creates a new ftrace instance
and runs the tests inside it. Before starting each test, it executes
'initialize_system()' to reset the ftrace state to initial-state.
However, since 'initialize_system()' is executed in the context of the
instance directory, it only cleans up triggers and filters of that
instance.
Any triggers or dynamic events left behind in the top-level instance by
previous failed top-level tests, are left completely untouched. These
top-level leftovers can cause subsequent instance-based tests to fail
or even crash the kernel.
Fix this by executing 'initialize_system()' in the top-level tracing
directory once before entering the instance loop.
Cc: stable@vger.kernel.org
Link: https://patch.msgid.link/178425671889.84440.9477850701738666404.stgit@devnote2
Fixes: b5b77be812de ("selftests: ftrace: Allow some tests to be run in a tracing instance")
Assisted-by: Antigravity:gemini-3.5-flash
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
tools/testing/selftests/ftrace/ftracetest | 1 +
1 file changed, 1 insertion(+)
--- a/tools/testing/selftests/ftrace/ftracetest
+++ b/tools/testing/selftests/ftrace/ftracetest
@@ -483,6 +483,7 @@ for t in $TEST_CASES; do
done
# Test on instance loop
+(cd $TRACING_DIR; initialize_system)
INSTANCE=" (instance) "
for t in $TEST_CASES; do
test_on_instance $t || continue
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 548/675] super: fix emergency thaw deadlock on frozen block devices
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (546 preceding siblings ...)
2026-07-30 14:14 ` [PATCH 6.18 547/675] selftests/ftrace: Reset triggers at top level before instance loop Greg Kroah-Hartman
@ 2026-07-30 14:14 ` Greg Kroah-Hartman
2026-07-30 14:14 ` [PATCH 6.18 549/675] rbd: Reset positive result codes to zero in object map update path Greg Kroah-Hartman
` (131 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:14 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Christian Brauner (Amutable)
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Christian Brauner <brauner@kernel.org>
commit 749d7aa0377aae32af8c0a4ad43371e7bf830ab5 upstream.
do_thaw_all_callback() calls bdev_thaw() while holding sb->s_umount
exclusively. If the block device was frozen via bdev_freeze() dropping
the last block layer freeze reference calls fs_bdev_thaw() which
reacquires s_umount:
do_thaw_all_callback(sb)
super_lock_excl(sb) # holds sb->s_umount
bdev_thaw(sb->s_bdev)
mutex_lock(&bdev->bd_fsfreeze_mutex)
# bd_fsfreeze_count drops 1 -> 0
bd_holder_ops->thaw == fs_bdev_thaw
get_bdev_super(bdev)
bdev_super_lock(bdev, true)
super_lock(sb, true)
down_write(&sb->s_umount) # same task: deadlock
The emergency thaw worker deadlocks against itself holding both
s_umount and bd_fsfreeze_mutex. That fscks any subsequent unmount,
freeze, or thaw of that filesystem and block device.
[ 81.878470] sysrq: Show Blocked State
[ 81.880140] task:kworker/0:1 state:D stack:0 pid:11 tgid:11 ppid:2 task_flags:0x4208060 flags:0x00080000
[ 81.884876] Workqueue: events do_thaw_all
[ 81.886656] Call Trace:
[ 81.887759] <TASK>
[ 81.888763] __schedule+0x579/0x1420
[ 81.890372] schedule+0x3a/0x100
[ 81.891794] schedule_preempt_disabled+0x15/0x30
[ 81.893848] rwsem_down_write_slowpath+0x1ea/0x900
[ 81.895191] ? __pfx_do_thaw_all_callback+0x10/0x10
[ 81.896528] down_write+0xbd/0xc0
[ 81.897505] super_lock+0x91/0x180
[ 81.898457] ? __mutex_lock+0xa99/0x1140
[ 81.900748] ? __mutex_unlock_slowpath+0x1f/0x400
[ 81.902069] bdev_super_lock+0x5b/0x150
[ 81.903132] get_bdev_super+0x10/0x60
[ 81.904042] fs_bdev_thaw+0x23/0xf0
[ 81.904755] bdev_thaw+0x82/0x100
[ 81.905484] do_thaw_all_callback+0x2c/0x50
[ 81.906298] __iterate_supers+0x5d/0x130
[ 81.907067] do_thaw_all+0x20/0x40
[ 81.907739] process_one_work+0x206/0x5e0
[ 81.908545] worker_thread+0x1e2/0x3c0
[ 81.909339] ? __pfx_worker_thread+0x10/0x10
[ 81.910171] kthread+0xf4/0x130
[ 81.910799] ? __pfx_kthread+0x10/0x10
[ 81.911528] ret_from_fork+0x2e2/0x3b0
[ 81.912259] ? __pfx_kthread+0x10/0x10
[ 81.913010] ret_from_fork_asm+0x1a/0x30
[ 81.913806] </TASK>
bdev_super_lock() even documents the violated requirement with
lockdep_assert_not_held(&sb->s_umount).
Acquiring bd_fsfreeze_mutex under s_umount also inverts the
bd_fsfreeze_mutex vs. s_umount ordering established by
bdev_{freeze,thaw}() and can thus ABBA against a concurrent block-layer
freeze even when the recursive path isn't hit.
Fix this by not holding s_umount around the bdev_thaw() loop at all. Pin
the superblock with an active reference instead as
filesystems_freeze_callback() does. The active reference keeps the
superblock from being shut down and so ->s_bdev stays valid without
holding s_umount. The block-layer-held freeze is dropped by
fs_bdev_thaw() with FREEZE_MAY_NEST | FREEZE_HOLDER_USERSPACE exactly as
a regular unfreeze would and thaw_super_locked() handles
filesystem-level freezes as before.
The emergency thaw path has deadlocked like this in one form or
another for a long long time but the current exclusively-held
shape dates back to commit [1] where thaw_bdev() already ended in
thaw_super() with s_umount held by do_thaw_all_callback().
Fixes: 08fdc8a0138a ("buffer.c: call thaw_super during emergency thaw") [1]
Cc: stable@vger.kernel.org
Link: https://patch.msgid.link/20260723-work-super-emergency_thaw-v1-1-7c315c600245@kernel.org
Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/super.c | 29 ++++++++++++++++-------------
1 file changed, 16 insertions(+), 13 deletions(-)
--- a/fs/super.c
+++ b/fs/super.c
@@ -1139,16 +1139,30 @@ void emergency_remount(void)
}
}
+static inline bool get_active_super(struct super_block *sb)
+{
+ bool active = false;
+
+ if (super_lock_excl(sb)) {
+ active = atomic_inc_not_zero(&sb->s_active);
+ super_unlock_excl(sb);
+ }
+ return active;
+}
+
static void do_thaw_all_callback(struct super_block *sb, void *unused)
{
- if (!super_lock_excl(sb))
+ if (!get_active_super(sb))
return;
+ /* fs_bdev_thaw() acquires s_umount so it must not be held here */
if (IS_ENABLED(CONFIG_BLOCK))
while (sb->s_bdev && !bdev_thaw(sb->s_bdev))
pr_warn("Emergency Thaw on %pg\n", sb->s_bdev);
- thaw_super_locked(sb, FREEZE_HOLDER_USERSPACE, NULL);
+ if (super_lock_excl(sb))
+ thaw_super_locked(sb, FREEZE_HOLDER_USERSPACE, NULL);
+ deactivate_super(sb);
}
static void do_thaw_all(struct work_struct *work)
@@ -1174,17 +1188,6 @@ void emergency_thaw_all(void)
}
}
-static inline bool get_active_super(struct super_block *sb)
-{
- bool active = false;
-
- if (super_lock_excl(sb)) {
- active = atomic_inc_not_zero(&sb->s_active);
- super_unlock_excl(sb);
- }
- return active;
-}
-
static const char *filesystems_freeze_ptr = "filesystems_freeze";
static void filesystems_freeze_callback(struct super_block *sb, void *freeze_all_ptr)
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 549/675] rbd: Reset positive result codes to zero in object map update path
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (547 preceding siblings ...)
2026-07-30 14:14 ` [PATCH 6.18 548/675] super: fix emergency thaw deadlock on frozen block devices Greg Kroah-Hartman
@ 2026-07-30 14:14 ` Greg Kroah-Hartman
2026-07-30 14:14 ` [PATCH 6.18 550/675] smb: client: handle STATUS_STOPPED_ON_SYMLINK responses without a symlink target Greg Kroah-Hartman
` (130 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:14 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Raphael Zimmer, Ilya Dryomov
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Raphael Zimmer <raphael.zimmer@tu-ilmenau.de>
commit a6c4250b81bd30beae94e1b7a4b26fa1193ad2e4 upstream.
In a reply message to an RBD request, a positive result code indicates
a data payload, which is not allowed for writes. While
rbd_osd_req_callback() already resets a positive result code for writes
to zero, rbd_object_map_callback() does not. This allows a corrupted
reply to an object map update to trigger the rbd_assert(*result < 0) in
__rbd_obj_handle_request(). This happens, because
rbd_object_map_callback() calls rbd_obj_handle_request() ->
__rbd_obj_handle_request() and passes this positive result code. From
__rbd_obj_handle_request(), rbd_obj_advance_write() is called, which
leaves the positive result code unchanged and returns true. Therefore,
the if(done && *result) branch is executed in __rbd_obj_handle_request()
and the assertion triggers.
This patch fixes the issue by adjusting the logic in the
rbd_object_map_callback() path. A positive result code for an object map
update is now reset to zero (similar to rbd_osd_req_callback()), and the
message is subsequently handled the same way as if the result code was
zero from the beginning. Additionally, a WARN_ON_ONCE() is added for
this case.
Cc: stable@vger.kernel.org
Fixes: 22e8bd51bb04 ("rbd: support for object-map and fast-diff")
Signed-off-by: Raphael Zimmer <raphael.zimmer@tu-ilmenau.de>
Reviewed-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/block/rbd.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -1957,10 +1957,15 @@ static int rbd_object_map_update_finish(
bool has_current_state;
void *p;
- if (osd_req->r_result)
+ if (osd_req->r_result < 0)
return osd_req->r_result;
/*
+ * Writes aren't allowed to return a data payload.
+ */
+ WARN_ON_ONCE(osd_req->r_result > 0);
+
+ /*
* Nothing to do for a snapshot object map.
*/
if (osd_req->r_num_ops == 1)
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 550/675] smb: client: handle STATUS_STOPPED_ON_SYMLINK responses without a symlink target
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (548 preceding siblings ...)
2026-07-30 14:14 ` [PATCH 6.18 549/675] rbd: Reset positive result codes to zero in object map update path Greg Kroah-Hartman
@ 2026-07-30 14:14 ` Greg Kroah-Hartman
2026-07-30 14:14 ` [PATCH 6.18 551/675] ksmbd: defer destroy_previous_session() until after NTLM authentication Greg Kroah-Hartman
` (129 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:14 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Pali Rohár, Carl Johnson,
Steve French
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Carl Johnson <carl@jpartners.org>
commit 2eb74eef4b7eda8df593d22fb48e94ef959ec8a5 upstream.
The macOS built-in SMB server returns STATUS_STOPPED_ON_SYMLINK for a
CREATE on a path whose final component is a symlink, but it does not
include a Symbolic Link Error Response in the error data: both
ErrorContextCount and ByteCount are zero, so the symlink target is not
present in the response at all. Per [MS-SMB2] section 2.2.2 such a
response should carry a valid Symbolic Link Error Response, so this is a
server bug, but the target can still be retrieved with
FSCTL_GET_REPARSE_POINT.
Frame from a capture against macOS 26.5.2 (build 25F84):
SMB2 hdr : Status=0x8000002d STATUS_STOPPED_ON_SYMLINK, Cmd=Create
Error Rsp: StructureSize=0x0009
Error Context Count: 0
Byte Count: 0
Error Data: 00
symlink_data() cannot find a struct smb2_symlink_err_rsp in such a
response and returns -EINVAL, which parse_create_response() propagates,
so smb2_query_path_info() bails out at
if (rc || !data->reparse_point)
goto out;
before it can retry with SMB2_OP_GET_REPARSE. stat(), readlink() and ls
of any server-side symlink then fail with -EINVAL:
$ ls -la Config
l????????? ? ? ? ? ? Config.json
$ stat Config/Config.json
stat: cannot statx 'Config/Config.json': Invalid argument
A 5.10 client resolves these symlinks correctly against the same server
and share, so this is a regression for Apple SMB servers.
Handle it in several places:
- symlink_data() detects the empty response (ErrorContextCount and
ByteCount both zero) and returns a distinct -ENODATA, so that "server
did not send the target" can be told apart from a genuinely malformed
response and only this case is worked around.
- parse_create_response() treats -ENODATA like
STATUS_IO_REPARSE_TAG_NOT_HANDLED, which does not carry the target
either: leave the reparse tag unset and clear rc, so the existing
SMB2_OP_GET_REPARSE path retrieves the target.
- smb2_query_path_info() only fixes up the symlink target type when the
target is already known. SMB2_OP_GET_REPARSE sets data->reparse.tag
but does not parse the target out of the reparse buffer; that happens
later, in reparse_info_to_fattr(). Without this check
smb2_fix_symlink_target_type() is called with a NULL target and
returns -EIO. This could not happen with servers that send the target
inline and therefore skip SMB2_OP_GET_REPARSE.
- smb2_open_file() maps -ENODATA to -EIO, matching
STATUS_IO_REPARSE_TAG_NOT_HANDLED, so its callers retrieve the target
with SMB2_OP_GET_REPARSE as well.
Tested on Debian 13, kernel 6.18.38 (armv7), against macOS 26.5.2:
symlinks now resolve, including relative, parent-traversing and directory
symlinks, and reads through symlinks succeed.
Cc: stable@vger.kernel.org
Co-developed-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Carl Johnson <carl@jpartners.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/smb/client/smb2file.c | 21 +++++++++++++++++++++
fs/smb/client/smb2inode.c | 23 ++++++++++++++++++++---
2 files changed, 41 insertions(+), 3 deletions(-)
--- a/fs/smb/client/smb2file.c
+++ b/fs/smb/client/smb2file.c
@@ -30,6 +30,19 @@ static struct smb2_symlink_err_rsp *syml
u8 *end = (u8 *)err + iov->iov_len;
u32 len;
+ /*
+ * Per [MS-SMB2] section 2.2.2, a STATUS_STOPPED_ON_SYMLINK response has to
+ * carry a Symbolic Link Error Response, so ByteCount cannot be zero. Some
+ * servers (e.g. the macOS built-in SMB server) violate this and return an
+ * empty error response, with both ErrorContextCount and ByteCount set to
+ * zero, i.e. without the symlink target. Detect this and return -ENODATA
+ * so that callers can tell "server did not send the target" apart from a
+ * malformed response, and retrieve the target with FSCTL_GET_REPARSE_POINT
+ * instead.
+ */
+ if (!err->ErrorContextCount && !le32_to_cpu(err->ByteCount))
+ return ERR_PTR(-ENODATA);
+
if (err->ErrorContextCount) {
struct smb2_error_context_rsp *p;
@@ -200,6 +213,14 @@ int smb2_open_file(const unsigned int xi
rc = smb2_parse_symlink_response(oparms->cifs_sb, &err_iov,
oparms->path,
&data->symlink_target);
+ /*
+ * If smb2_parse_symlink_response returned -ENODATA then the
+ * symlink_target was not sent. Treat this as if the SMB2_open()
+ * failed with STATUS_IO_REPARSE_TAG_NOT_HANDLED status, which is
+ * indicated by the -EIO errno.
+ */
+ if (rc == -ENODATA)
+ rc = -EIO;
if (!rc) {
memset(smb2_data, 0, sizeof(*smb2_data));
oparms->create_options |= OPEN_REPARSE_POINT;
--- a/fs/smb/client/smb2inode.c
+++ b/fs/smb/client/smb2inode.c
@@ -896,9 +896,19 @@ static int parse_create_response(struct
rc = smb2_parse_symlink_response(cifs_sb, iov,
full_path,
&data->symlink_target);
- if (rc)
+ if (rc != 0 && rc != -ENODATA)
return rc;
- tag = IO_REPARSE_TAG_SYMLINK;
+ /*
+ * -ENODATA means that the response was parsed but did not contain
+ * the symlink target at all (see symlink_data()). Treat it like
+ * STATUS_IO_REPARSE_TAG_NOT_HANDLED, which does not contain it
+ * either: leave the tag unset and clear rc, so that the caller
+ * retrieves the target with SMB2_OP_GET_REPARSE.
+ */
+ if (rc == -ENODATA)
+ rc = 0;
+ else
+ tag = IO_REPARSE_TAG_SYMLINK;
reparse_point = true;
break;
case STATUS_SUCCESS:
@@ -1091,7 +1101,14 @@ int smb2_query_path_info(const unsigned
rc = -EOPNOTSUPP;
}
- if (data->reparse.tag == IO_REPARSE_TAG_SYMLINK && !rc) {
+ /*
+ * If the symlink was already parsed in create response then it is needed to fix
+ * its type now (after the second call with OPEN_REPARSE_POINT which filled the
+ * data->fi.Attributes). If the symlink was not parsed in create response then
+ * the data->symlink_target was not filled yet and then the type will be fixed
+ * later after data->symlink_target is filled.
+ */
+ if (data->reparse.tag == IO_REPARSE_TAG_SYMLINK && !rc && data->symlink_target) {
bool directory = le32_to_cpu(data->fi.Attributes) & ATTR_DIRECTORY;
rc = smb2_fix_symlink_target_type(&data->symlink_target, directory, cifs_sb);
}
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 551/675] ksmbd: defer destroy_previous_session() until after NTLM authentication
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (549 preceding siblings ...)
2026-07-30 14:14 ` [PATCH 6.18 550/675] smb: client: handle STATUS_STOPPED_ON_SYMLINK responses without a symlink target Greg Kroah-Hartman
@ 2026-07-30 14:14 ` Greg Kroah-Hartman
2026-07-30 14:14 ` [PATCH 6.18 552/675] gve: fix Rx queue stall on alloc failure Greg Kroah-Hartman
` (128 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:14 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, James Montgomery, Namjae Jeon,
Steve French
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: James Montgomery <james_montgomery@disroot.org>
commit c74801ee524f477c174a1899782b6c3b6918d407 upstream.
In ntlm_authenticate(), destroy_previous_session() is called using a
user pointer resolved from the client-supplied NTLM blob username field
before the NTLMv2 response is validated. An authenticated attacker can
set the NTLM blob username to match a victim account and set
PreviousSessionId to the victim's session ID; destroy_previous_session()
destroys the victim's session while ksmbd_decode_ntlmssp_auth_blob()
subsequently rejects the request with -EPERM.
Move destroy_previous_session() and the prev_id assignment to after
ksmbd_decode_ntlmssp_auth_blob() returns success and use sess->user
rather than the pre-authentication lookup result. This matches the
ordering already used by krb5_authenticate(), where
destroy_previous_session() is called only after
ksmbd_krb5_authenticate() returns success.
Fixes: e2f34481b24d ("cifsd: add server-side procedures for SMB3")
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/linux-cifs/20260702155449.3639773-1-james_montgomery@disroot.org/
Signed-off-by: James Montgomery <james_montgomery@disroot.org>
Acked-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/smb/server/smb2pdu.c | 9 ++++-----
1 file changed, 4 insertions(+), 5 deletions(-)
--- a/fs/smb/server/smb2pdu.c
+++ b/fs/smb/server/smb2pdu.c
@@ -1492,11 +1492,6 @@ static int ntlm_authenticate(struct ksmb
return -EPERM;
}
- /* Check for previous session */
- prev_id = le64_to_cpu(req->PreviousSessionId);
- if (prev_id && prev_id != sess->id)
- destroy_previous_session(conn, user, prev_id);
-
if (sess->state == SMB2_SESSION_VALID) {
/*
* Reuse session if anonymous try to connect
@@ -1534,6 +1529,10 @@ static int ntlm_authenticate(struct ksmb
}
}
+ prev_id = le64_to_cpu(req->PreviousSessionId);
+ if (prev_id && prev_id != sess->id)
+ destroy_previous_session(conn, sess->user, prev_id);
+
/*
* If session state is SMB2_SESSION_VALID, We can assume
* that it is reauthentication. And the user/password
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 552/675] gve: fix Rx queue stall on alloc failure
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (550 preceding siblings ...)
2026-07-30 14:14 ` [PATCH 6.18 551/675] ksmbd: defer destroy_previous_session() until after NTLM authentication Greg Kroah-Hartman
@ 2026-07-30 14:14 ` Greg Kroah-Hartman
2026-07-30 14:14 ` [PATCH 6.18 553/675] ice: reject out-of-range ptype in ice_parser_profile_init Greg Kroah-Hartman
` (127 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:14 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Jordan Rhee, Eddie Phillips,
Harshitha Ramamurthy, Przemek Kitszel, Jakub Kicinski
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Eddie Phillips <eddiephillips@google.com>
commit b65352a1bac64442ad95e64f385b40ccb9f1b0db upstream.
When the system is under extreme memory pressure, page allocations can
fail during the Rx buffer refill loop. If the number of buffers posted
to hardware falls below a critical low threshold and the refill loop
exits due to allocation failures, the queue can stall:
1. The device drops incoming packets because there are no descriptors.
2. Since no packets are processed, no Rx completions are generated.
3. Because no completions occur, NAPI is never scheduled, preventing
the refill loop from running again even after memory is freed.
This results in a permanent queue stall.
Resolve this by introducing a starvation recovery timer for each Rx queue.
If the number of buffers posted to hardware falls below a critical low
threshold, start a timer to periodically reschedule NAPI. Once NAPI runs
and successfully refills the queue above the threshold, the timer is
not rescheduled.
The threshold is set to 32 because a single maximum-sized Receive Segment
Coalescing (RSC) packet can consume up to 19 descriptors in the Rx path.
Lower thresholds (such as 8 or 16) would be insufficient to process a
complete maximum-sized RSC packet, risking packet drops or unexpected
hardware behavior under memory pressure. Setting the threshold to 32
guarantees a safe margin to handle at least one full RSC packet.
Cc: stable@vger.kernel.org
Fixes: 9b8dd5e5ea48 ("gve: DQO: Add RX path")
Reviewed-by: Jordan Rhee <jordanrhee@google.com>
Signed-off-by: Eddie Phillips <eddiephillips@google.com>
Signed-off-by: Harshitha Ramamurthy <hramamurthy@google.com>
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Link: https://patch.msgid.link/20260709211906.3322883-1-hramamurthy@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/ethernet/google/gve/gve.h | 3 ++
drivers/net/ethernet/google/gve/gve_rx_dqo.c | 34 +++++++++++++++++++++++++++
2 files changed, 37 insertions(+)
--- a/drivers/net/ethernet/google/gve/gve.h
+++ b/drivers/net/ethernet/google/gve/gve.h
@@ -13,6 +13,7 @@
#include <linux/netdevice.h>
#include <linux/net_tstamp.h>
#include <linux/pci.h>
+#include <linux/timer.h>
#include <linux/ptp_clock_kernel.h>
#include <linux/u64_stats_sync.h>
#include <net/page_pool/helpers.h>
@@ -41,6 +42,7 @@
/* Interval to schedule a stats report update, 20000ms. */
#define GVE_STATS_REPORT_TIMER_PERIOD 20000
+#define GVE_RX_NAPI_RESCHED_MS 20 /* msecs */
/* Numbers of NIC tx/rx stats in stats report. */
#define NIC_TX_STATS_REPORT_NUM 0
@@ -338,6 +340,7 @@ struct gve_rx_ring {
struct xdp_rxq_info xdp_rxq;
struct xsk_buff_pool *xsk_pool;
struct page_frag_cache page_cache; /* Page cache to allocate XDP frames */
+ struct timer_list starvation_timer; /* for queue starvation recovery */
};
/* A TX desc ring entry */
--- a/drivers/net/ethernet/google/gve/gve_rx_dqo.c
+++ b/drivers/net/ethernet/google/gve/gve_rx_dqo.c
@@ -18,6 +18,16 @@
#include <net/tcp.h>
#include <net/xdp_sock_drv.h>
+static void gve_rx_starvation_timer(struct timer_list *t)
+{
+ struct gve_rx_ring *rx = timer_container_of(rx, t, starvation_timer);
+ struct gve_priv *priv = rx->gve;
+ struct gve_notify_block *block;
+
+ block = &priv->ntfy_blocks[rx->ntfy_id];
+ napi_schedule(&block->napi);
+}
+
static void gve_rx_free_hdr_bufs(struct gve_priv *priv, struct gve_rx_ring *rx)
{
struct device *hdev = &priv->pdev->dev;
@@ -120,6 +130,7 @@ void gve_rx_stop_ring_dqo(struct gve_pri
if (rx->dqo.page_pool)
page_pool_disable_direct_recycling(rx->dqo.page_pool);
+ timer_shutdown_sync(&rx->starvation_timer);
gve_remove_napi(priv, ntfy_idx);
gve_rx_remove_from_block(priv, idx);
gve_rx_reset_ring_dqo(priv, idx);
@@ -208,8 +219,10 @@ static int gve_rx_alloc_hdr_bufs(struct
void gve_rx_start_ring_dqo(struct gve_priv *priv, int idx)
{
int ntfy_idx = gve_rx_idx_to_ntfy(priv, idx);
+ struct gve_rx_ring *rx = &priv->rx[idx];
gve_rx_add_to_block(priv, idx);
+ timer_setup(&rx->starvation_timer, gve_rx_starvation_timer, 0);
gve_add_napi(priv, ntfy_idx, gve_napi_poll_dqo);
}
@@ -363,6 +376,7 @@ void gve_rx_post_buffers_dqo(struct gve_
struct gve_rx_compl_queue_dqo *complq = &rx->dqo.complq;
struct gve_rx_buf_queue_dqo *bufq = &rx->dqo.bufq;
struct gve_priv *priv = rx->gve;
+ u32 num_bufs_avail_to_hw;
u32 num_avail_slots;
u32 num_full_slots;
u32 num_posted = 0;
@@ -398,6 +412,26 @@ void gve_rx_post_buffers_dqo(struct gve_
}
rx->fill_cnt += num_posted;
+
+ /* If the queue has fewer than GVE_RX_BUF_THRESH_DQO descriptors
+ * visible to the hardware, the hardware is in danger of starving
+ * and cannot trigger interrupts.
+ *
+ * We use a threshold of 32 because a single maximum-sized RSC
+ * packet can consume up to 19 descriptors in the Rx path. Lower
+ * thresholds (e.g., 8 or 16) would be unsafe as they could cause
+ * the device to drop/stall on a maximum-sized RSC packet.
+ *
+ * Start the timer to periodically reschedule NAPI and recover.
+ */
+ num_bufs_avail_to_hw =
+ ((bufq->tail & ~(GVE_RX_BUF_THRESH_DQO - 1)) -
+ bufq->head) & bufq->mask;
+
+ if (num_bufs_avail_to_hw < GVE_RX_BUF_THRESH_DQO) {
+ mod_timer(&rx->starvation_timer,
+ jiffies + msecs_to_jiffies(GVE_RX_NAPI_RESCHED_MS));
+ }
}
static void gve_rx_skb_csum(struct sk_buff *skb,
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 553/675] ice: reject out-of-range ptype in ice_parser_profile_init
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (551 preceding siblings ...)
2026-07-30 14:14 ` [PATCH 6.18 552/675] gve: fix Rx queue stall on alloc failure Greg Kroah-Hartman
@ 2026-07-30 14:14 ` Greg Kroah-Hartman
2026-07-30 14:14 ` [PATCH 6.18 554/675] ice: use READ_ONCE() to access cached PHC time Greg Kroah-Hartman
` (126 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:14 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Aleksandr Loktionov, Marcin Szycik,
Rafal Romanowski, Tony Nguyen, Jakub Kicinski
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
commit 59abb87159c53605c063f6e2ceb215b5eba43ee6 upstream.
set_bit(rslt->ptype, prof->ptypes) operates on a DECLARE_BITMAP of
ICE_FLOW_PTYPE_MAX (1024) bits. Nothing prevents a malicious VF from
providing ptype >= 1024 through VIRTCHNL, resulting in a write past
the end of the bitmap and a kernel page fault.
Reproduced with a custom kernel module injecting a crafted
VIRTCHNL_OP_ADD_RSS_CFG on E810-C QSFP (8086:1592),
FW 4.91 0x800214af 1.3909.0, ICE COMMS DDP 1.3.53.0,
kernel 7.1.0-rc1.
crash_parser: ice_parser_profile_init @ ffffffffc0d61b60
crash_parser: setting ptype=0xffff (max valid=1023)
crash_parser: calling ice_parser_profile_init -- expect OOB crash!
BUG: kernel NULL pointer dereference, address: 0000000000000000
Oops: Oops: 0002 [#1] SMP NOPTI
CPU: 56 UID: 0 PID: 165011 Comm: insmod Kdump: loaded Tainted: G S U OE 7.1.0-rc1 #1
Hardware name: Intel Corporation S2600BPB/S2600BPB
RIP: 0010:ice_parser_profile_init+0x2d/0x1d0 [ice]
Call Trace:
<TASK>
? __pfx_ice_parser_profile_init+0x10/0x10 [ice]
crash_init+0x127/0xff0 [crash_parser]
do_one_initcall+0x45/0x310
do_init_module+0x64/0x270
init_module_from_file+0xcc/0xf0
idempotent_init_module+0x17b/0x280
__x64_sys_finit_module+0x6e/0xe0
Bail out early with -EINVAL when ptype is out of range.
Fixes: e312b3a1e209 ("ice: add API for parser profile initialization")
Cc: stable@vger.kernel.org
Signed-off-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Reviewed-by: Marcin Szycik <marcin.szycik@linux.intel.com>
Tested-by: Rafal Romanowski <rafal.romanowski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Link: https://patch.msgid.link/20260717185340.3595286-12-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/ethernet/intel/ice/ice_parser.c | 3 +++
1 file changed, 3 insertions(+)
--- a/drivers/net/ethernet/intel/ice/ice_parser.c
+++ b/drivers/net/ethernet/intel/ice/ice_parser.c
@@ -2368,6 +2368,9 @@ int ice_parser_profile_init(struct ice_p
u16 proto_off = 0;
u16 off;
+ if (rslt->ptype >= ICE_FLOW_PTYPE_MAX)
+ return -EINVAL;
+
memset(prof, 0, sizeof(*prof));
set_bit(rslt->ptype, prof->ptypes);
if (blk == ICE_BLK_SW) {
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 554/675] ice: use READ_ONCE() to access cached PHC time
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (552 preceding siblings ...)
2026-07-30 14:14 ` [PATCH 6.18 553/675] ice: reject out-of-range ptype in ice_parser_profile_init Greg Kroah-Hartman
@ 2026-07-30 14:14 ` Greg Kroah-Hartman
2026-07-30 14:14 ` [PATCH 6.18 555/675] ila: reload IPv6 header after pskb_may_pull in checksum adjust Greg Kroah-Hartman
` (125 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:14 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Sergey Temerkhanov,
Aleksandr Loktionov, Simon Horman, Tony Nguyen, Jakub Kicinski,
Rinitha S
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Sergey Temerkhanov <sergey.temerkhanov@intel.com>
commit 2915681b89f817677ab9f1166d95b595bc144f5f upstream.
ptp.cached_phc_time is a 64-bit value updated by a periodic work item
on one CPU and read locklessly on another. On 32-bit or non-atomic
architectures this can result in a torn read. Use READ_ONCE() to
enforce a single atomic load.
Fixes: 77a781155a65 ("ice: enable receive hardware timestamping")
Cc: stable@vger.kernel.org
Signed-off-by: Sergey Temerkhanov <sergey.temerkhanov@intel.com>
Signed-off-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Tested-by: Rinitha S <sx.rinitha@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Link: https://patch.msgid.link/20260717185340.3595286-9-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/ethernet/intel/ice/ice_ptp.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/net/ethernet/intel/ice/ice_ptp.c
+++ b/drivers/net/ethernet/intel/ice/ice_ptp.c
@@ -350,7 +350,7 @@ static u64 ice_ptp_extend_40b_ts(struct
return 0;
}
- return ice_ptp_extend_32b_ts(pf->ptp.cached_phc_time,
+ return ice_ptp_extend_32b_ts(READ_ONCE(pf->ptp.cached_phc_time),
(in_tstamp >> 8) & mask);
}
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 555/675] ila: reload IPv6 header after pskb_may_pull in checksum adjust
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (553 preceding siblings ...)
2026-07-30 14:14 ` [PATCH 6.18 554/675] ice: use READ_ONCE() to access cached PHC time Greg Kroah-Hartman
@ 2026-07-30 14:14 ` Greg Kroah-Hartman
2026-07-30 14:14 ` [PATCH 6.18 556/675] mac802154: hold an interface reference across the scan worker Greg Kroah-Hartman
` (124 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:14 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Michael Bommarito, Simon Horman,
Antoine Tenart, Jakub Kicinski
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Michael Bommarito <michael.bommarito@gmail.com>
commit 92d3817649df2b0b6a008a686c8275c88d7ef594 upstream.
ila_csum_adjust_transport() caches ip6h = ipv6_hdr(skb) before calling
pskb_may_pull(). On a non-linear skb whose transport header sits in a page
fragment, pskb_may_pull() can call __pskb_pull_tail() / pskb_expand_head()
and free the old skb head, leaving ip6h dangling; the following
get_csum_diff(ip6h, p) then reads freed memory. ila_update_ipv6_locator()
uses ip6h (and the iaddr derived from it) again after the csum-adjust
call and additionally writes the new locator through that pointer.
Impact: a remote IPv6 packet routed through a configured ILA
csum-adjust-transport route or receive-side mapping triggers a
slab-use-after-free in ila_update_ipv6_locator() (KASAN). The route or
mapping requires CAP_NET_ADMIN to configure, but trigger packets are
unauthenticated once it exists.
Reload ip6h after each pskb_may_pull() in ila_csum_adjust_transport()
before the csum-diff read. In ila_update_ipv6_locator() only the
ILA_CSUM_ADJUST_TRANSPORT case pulls the skb, so reload ip6h and iaddr in
that case alone before the destination-address write; the neutral-map
modes never pull and keep their cached pointers.
Fixes: 33f11d16142b ("ila: Create net/ipv6/ila directory")
Cc: stable@vger.kernel.org
Signed-off-by: Michael Bommarito <michael.bommarito@gmail.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Reviewed-by: Antoine Tenart <atenart@kernel.org>
Link: https://patch.msgid.link/20260714114903.3763420-1-michael.bommarito@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/ipv6/ila/ila_common.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
--- a/net/ipv6/ila/ila_common.c
+++ b/net/ipv6/ila/ila_common.c
@@ -84,6 +84,7 @@ static void ila_csum_adjust_transport(st
struct tcphdr *th = (struct tcphdr *)
(skb_network_header(skb) + nhoff);
+ ip6h = ipv6_hdr(skb);
diff = get_csum_diff(ip6h, p);
inet_proto_csum_replace_by_diff(&th->check, skb,
diff, true, true);
@@ -95,6 +96,7 @@ static void ila_csum_adjust_transport(st
(skb_network_header(skb) + nhoff);
if (uh->check || skb->ip_summed == CHECKSUM_PARTIAL) {
+ ip6h = ipv6_hdr(skb);
diff = get_csum_diff(ip6h, p);
inet_proto_csum_replace_by_diff(&uh->check, skb,
diff, true, true);
@@ -109,6 +111,7 @@ static void ila_csum_adjust_transport(st
struct icmp6hdr *ih = (struct icmp6hdr *)
(skb_network_header(skb) + nhoff);
+ ip6h = ipv6_hdr(skb);
diff = get_csum_diff(ip6h, p);
inet_proto_csum_replace_by_diff(&ih->icmp6_cksum, skb,
diff, true, true);
@@ -126,6 +129,15 @@ void ila_update_ipv6_locator(struct sk_b
switch (p->csum_mode) {
case ILA_CSUM_ADJUST_TRANSPORT:
ila_csum_adjust_transport(skb, p);
+ /*
+ * ila_csum_adjust_transport() calls pskb_may_pull(), which can
+ * reallocate the skb head and leave ip6h (and the iaddr derived
+ * from it) dangling; reload both before the write below. The
+ * other csum modes do not pull, so their cached pointers stay
+ * valid.
+ */
+ ip6h = ipv6_hdr(skb);
+ iaddr = ila_a2i(&ip6h->daddr);
break;
case ILA_CSUM_NEUTRAL_MAP:
if (sir2ila) {
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 556/675] mac802154: hold an interface reference across the scan worker
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (554 preceding siblings ...)
2026-07-30 14:14 ` [PATCH 6.18 555/675] ila: reload IPv6 header after pskb_may_pull in checksum adjust Greg Kroah-Hartman
@ 2026-07-30 14:14 ` Greg Kroah-Hartman
2026-07-30 14:14 ` [PATCH 6.18 557/675] mac802154: llsec: reject frames shorter than the authentication tag Greg Kroah-Hartman
` (123 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:14 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Ibrahim Hashimov, Jakub Kicinski
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Ibrahim Hashimov <security@auditcode.ai>
commit 234e5e898b713bc0b3a631b6f002897f43d046c8 upstream.
mac802154_scan_worker() captures the scanning sub-interface under RCU
and then keeps dereferencing sdata->dev after rcu_read_unlock() and
outside the rtnl -- in the failure traces, in
mac802154_transmit_beacon_req() (skb->dev = sdata->dev), and in the
end_scan cleanup. Nothing keeps that netdev alive across the worker
iteration.
A concurrent DEL_INTERFACE or PHY removal can unregister the interface
once the worker drops the rtnl between its two drv_set_channel()
sections. unregister_netdevice() frees the netdev asynchronously from
netdev_run_todo() with the rtnl already dropped, so neither holding the
rtnl nor the per-PHY IEEE802154_IS_SCANNING flag prevents a stale worker
iteration from dereferencing the freed netdev -- a KASAN
slab-use-after-free, reachable by racing TRIGGER_SCAN against
DEL_INTERFACE (both CAP_NET_ADMIN).
Pin the netdev with netdev_hold() while the RCU read lock is still held,
and release it at every worker exit.
Fixes: 57588c71177f ("mac802154: Handle passive scanning")
Cc: stable@vger.kernel.org
Signed-off-by: Ibrahim Hashimov <security@auditcode.ai>
Link: https://patch.msgid.link/20260721211228.34578-1-security@auditcode.ai
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/mac802154/scan.c | 11 +++++++++++
1 file changed, 11 insertions(+)
--- a/net/mac802154/scan.c
+++ b/net/mac802154/scan.c
@@ -179,6 +179,7 @@ void mac802154_scan_worker(struct work_s
enum nl802154_scan_types scan_req_type;
struct ieee802154_sub_if_data *sdata;
unsigned int scan_duration = 0;
+ netdevice_tracker dev_tracker;
struct wpan_phy *wpan_phy;
u8 scan_req_duration;
u8 page, channel;
@@ -209,6 +210,14 @@ void mac802154_scan_worker(struct work_s
return;
}
+ /*
+ * sdata->dev is dereferenced below after rcu_read_unlock() and outside
+ * the rtnl, and a concurrent DEL_INTERFACE / PHY teardown can free it
+ * asynchronously from netdev_run_todo(). Pin it with a reference taken
+ * while the RCU read lock is still held, and drop it at every exit.
+ */
+ netdev_hold(sdata->dev, &dev_tracker, GFP_ATOMIC);
+
wpan_phy = scan_req->wpan_phy;
scan_req_type = scan_req->type;
scan_req_duration = scan_req->duration;
@@ -262,12 +271,14 @@ void mac802154_scan_worker(struct work_s
"Scan page %u channel %u for %ums\n",
page, channel, jiffies_to_msecs(scan_duration));
queue_delayed_work(local->mac_wq, &local->scan_work, scan_duration);
+ netdev_put(sdata->dev, &dev_tracker);
return;
end_scan:
rtnl_lock();
mac802154_scan_cleanup_locked(local, sdata, false);
rtnl_unlock();
+ netdev_put(sdata->dev, &dev_tracker);
}
int mac802154_trigger_scan_locked(struct ieee802154_sub_if_data *sdata,
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 557/675] mac802154: llsec: reject frames shorter than the authentication tag
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (555 preceding siblings ...)
2026-07-30 14:14 ` [PATCH 6.18 556/675] mac802154: hold an interface reference across the scan worker Greg Kroah-Hartman
@ 2026-07-30 14:14 ` Greg Kroah-Hartman
2026-07-30 14:14 ` [PATCH 6.18 558/675] mctp: serial: handle zero-length frames to prevent rx buffer overflow Greg Kroah-Hartman
` (122 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:14 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Simon Horman, Doruk Tan Ozturk,
Jakub Kicinski
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Doruk Tan Ozturk <doruk@0sec.ai>
commit fd3a3f28ed60c6af4b2a39933b151d6b27842c3b upstream.
llsec_do_decrypt_auth() computes the associated-data length for the
AEAD request as
assoclen += datalen - authlen;
where datalen is the number of bytes after the MAC header and authlen
(4, 8 or 16) is the length of the authentication tag. Nothing verifies
that the frame actually carries at least authlen payload bytes. A
secured frame whose payload is shorter than the tag makes
datalen - authlen negative; assoclen is then passed to
aead_request_set_ad() as an unsigned value close to 4 GiB, so
crypto_aead_decrypt() walks far off the end of the scatterlist that
only spans the real frame.
The frame is fully attacker-controlled and reaches this path from any
IEEE 802.15.4 peer in radio range. Reject frames whose payload is
shorter than the authentication tag before the subtraction.
Dynamically reproduced on a KASAN kernel as a general-protection-fault
in the AEAD scatterwalk, and the fix confirmed.
Fixes: 4c14a2fb5d14 ("mac802154: add llsec decryption method")
Cc: stable@vger.kernel.org
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Doruk Tan Ozturk <doruk@0sec.ai>
Link: https://patch.msgid.link/20260716193423.32498-1-doruk@0sec.ai
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/mac802154/llsec.c | 5 +++++
1 file changed, 5 insertions(+)
--- a/net/mac802154/llsec.c
+++ b/net/mac802154/llsec.c
@@ -891,6 +891,11 @@ llsec_do_decrypt_auth(struct sk_buff *sk
data = skb_mac_header(skb) + skb->mac_len;
datalen = skb_tail_pointer(skb) - data;
+ if (datalen < authlen) {
+ kfree_sensitive(req);
+ return -EBADMSG;
+ }
+
sg_init_one(&sg, skb_mac_header(skb), assoclen + datalen);
if (!(hdr->sec.level & IEEE802154_SCF_SECLEVEL_ENC)) {
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 558/675] mctp: serial: handle zero-length frames to prevent rx buffer overflow
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (556 preceding siblings ...)
2026-07-30 14:14 ` [PATCH 6.18 557/675] mac802154: llsec: reject frames shorter than the authentication tag Greg Kroah-Hartman
@ 2026-07-30 14:14 ` Greg Kroah-Hartman
2026-07-30 14:14 ` [PATCH 6.18 559/675] openvswitch: fix GSO userspace truncation underflow Greg Kroah-Hartman
` (121 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:14 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Jeremy Kerr, Doruk Tan Ozturk,
Simon Horman, Paolo Abeni
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Doruk Tan Ozturk <doruk@0sec.ai>
commit 793b9b729f1e8de57be8c8daf1a9838be96cabed upstream.
The MCTP serial receive state machine reads a frame length byte in
mctp_serial_push_header() case 2 and validates it upper-bound-only:
if (c > MCTP_SERIAL_FRAME_MTU) {
dev->rxstate = STATE_ERR;
} else {
dev->rxlen = c;
dev->rxpos = 0;
dev->rxstate = STATE_DATA;
...
}
A length of zero passes this check, so rxlen is set to 0 and the state
machine advances to STATE_DATA. In mctp_serial_push() STATE_DATA, the
incoming byte is stored and rxpos incremented before the terminator is
tested:
dev->rxbuf[dev->rxpos] = c;
dev->rxpos++;
dev->rxstate = STATE_DATA;
if (dev->rxpos == dev->rxlen) {
dev->rxpos = 0;
dev->rxstate = STATE_TRAILER;
}
With rxlen == 0 the "rxpos == rxlen" terminator can never fire (rxpos is
already 1 on the first data byte), so subsequent bytes are written past
the end of the fixed 74-byte rxbuf, which is the last member of the
netdev private area. Every following data byte is an attacker-controlled
1-byte out-of-bounds heap write, and the overflow continues until a
frame (0x7e) or escape byte resets the parser -- effectively unbounded.
Reaching this requires CAP_NET_ADMIN to attach the N_MCTP line
discipline and bring the resulting mctpserialN netdev up, after which
the bytes arrive via the tty receive path.
Route a zero-length frame straight to STATE_TRAILER instead of
STATE_DATA. The trailer/framing bytes are still consumed, and the frame
resolves to a zero-length skb that the MCTP core rejects; the parser
never enters STATE_DATA with rxlen == 0, so the out-of-bounds write can
no longer occur.
KASAN, on a frame of 0x7e 0x01 0x00 followed by data bytes (before this
change):
UBSAN: array-index-out-of-bounds in drivers/net/mctp/mctp-serial.c:370
index 74 is out of range for type 'u8 [74]'
BUG: KASAN: slab-out-of-bounds in mctp_serial_tty_receive_buf
Write of size 1 at addr ... by task kworker/u16:0
mctp_serial_tty_receive_buf
tty_ldisc_receive_buf
flush_to_ldisc
Allocated by task 152:
alloc_netdev_mqs
mctp_serial_open
v2: route zero-length frames to STATE_TRAILER instead of STATE_ERR so
the trailer/framing bytes are still consumed (Jeremy Kerr).
Found by 0sec automated security-research tooling (https://0sec.ai).
Fixes: a0c2ccd9b5ad ("mctp: Add MCTP-over-serial transport binding")
Cc: stable@vger.kernel.org
Suggested-by: Jeremy Kerr <jk@codeconstruct.com.au>
Assisted-by: 0sec:multi-model
Signed-off-by: Doruk Tan Ozturk <doruk@0sec.ai>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20260715082021.46315-1-doruk@0sec.ai
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/mctp/mctp-serial.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/net/mctp/mctp-serial.c
+++ b/drivers/net/mctp/mctp-serial.c
@@ -318,7 +318,7 @@ static void mctp_serial_push_header(stru
} else {
dev->rxlen = c;
dev->rxpos = 0;
- dev->rxstate = STATE_DATA;
+ dev->rxstate = c > 0 ? STATE_DATA : STATE_TRAILER;
dev->rxfcs = crc_ccitt_byte(dev->rxfcs, c);
}
break;
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 559/675] openvswitch: fix GSO userspace truncation underflow
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (557 preceding siblings ...)
2026-07-30 14:14 ` [PATCH 6.18 558/675] mctp: serial: handle zero-length frames to prevent rx buffer overflow Greg Kroah-Hartman
@ 2026-07-30 14:14 ` Greg Kroah-Hartman
2026-07-30 14:14 ` [PATCH 6.18 560/675] ovpn: fix peer refcount leak in TCP error paths Greg Kroah-Hartman
` (120 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:14 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Kyle Zeng, Ilya Maximets,
Aaron Conole, Paolo Abeni
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Kyle Zeng <kylebot@openai.com>
commit 4032f8ed10fcb84d41c508dfb04be96589f78dfe upstream.
OVS_ACTION_ATTR_TRUNC currently stores a delta from the original skb
length in OVS_CB(skb)->cutlen. When a later userspace action segments a
GSO skb, queue_gso_packets() reuses that delta for each smaller segment.
A segment can then reach queue_userspace_packet() with cutlen greater
than skb->len, underflowing the length passed to skb_zerocopy().
Store the maximum preserved length instead and bound each consumer
against the current skb length. Use U32_MAX as the no-truncation
sentinel so the value remains valid if skb geometry changes before a
consumer handles it.
Fixes: f2a4d086ed4c ("openvswitch: Add packet truncation support.")
Cc: stable@vger.kernel.org
Assisted-by: Codex:gpt-5.5
Signed-off-by: Kyle Zeng <kylebot@openai.com>
Reviewed-by: Ilya Maximets <i.maximets@ovn.org>
Reviewed-by: Aaron Conole <aconole@redhat.com>
Link: https://patch.msgid.link/20260707221635.27489-1-kylebot@openai.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/openvswitch/actions.c | 19 +++++++------------
net/openvswitch/datapath.c | 25 ++++++++++++++-----------
net/openvswitch/datapath.h | 2 +-
net/openvswitch/vport.c | 2 +-
4 files changed, 23 insertions(+), 25 deletions(-)
--- a/net/openvswitch/actions.c
+++ b/net/openvswitch/actions.c
@@ -836,12 +836,8 @@ static void do_output(struct datapath *d
u16 mru = OVS_CB(skb)->mru;
u32 cutlen = OVS_CB(skb)->cutlen;
- if (unlikely(cutlen > 0)) {
- if (skb->len - cutlen > ovs_mac_header_len(key))
- pskb_trim(skb, skb->len - cutlen);
- else
- pskb_trim(skb, ovs_mac_header_len(key));
- }
+ if (unlikely(cutlen < skb->len))
+ pskb_trim(skb, max(cutlen, ovs_mac_header_len(key)));
if (likely(!mru ||
(skb->len <= mru + vport->dev->hard_header_len))) {
@@ -1233,7 +1229,7 @@ static void execute_psample(struct datap
psample_group.net = ovs_dp_get_net(dp);
md.in_ifindex = OVS_CB(skb)->input_vport->dev->ifindex;
- md.trunc_size = skb->len - OVS_CB(skb)->cutlen;
+ md.trunc_size = min(skb->len, OVS_CB(skb)->cutlen);
md.rate_as_probability = 1;
rate = OVS_CB(skb)->probability ? OVS_CB(skb)->probability : U32_MAX;
@@ -1283,22 +1279,21 @@ static int do_execute_actions(struct dat
clone = skb_clone(skb, GFP_ATOMIC);
if (clone)
do_output(dp, clone, port, key);
- OVS_CB(skb)->cutlen = 0;
+ OVS_CB(skb)->cutlen = U32_MAX;
break;
}
case OVS_ACTION_ATTR_TRUNC: {
struct ovs_action_trunc *trunc = nla_data(a);
- if (skb->len > trunc->max_len)
- OVS_CB(skb)->cutlen = skb->len - trunc->max_len;
+ OVS_CB(skb)->cutlen = trunc->max_len;
break;
}
case OVS_ACTION_ATTR_USERSPACE:
output_userspace(dp, skb, key, a, attr,
len, OVS_CB(skb)->cutlen);
- OVS_CB(skb)->cutlen = 0;
+ OVS_CB(skb)->cutlen = U32_MAX;
if (nla_is_last(a, rem)) {
consume_skb(skb);
return 0;
@@ -1452,7 +1447,7 @@ static int do_execute_actions(struct dat
case OVS_ACTION_ATTR_PSAMPLE:
execute_psample(dp, skb, a);
- OVS_CB(skb)->cutlen = 0;
+ OVS_CB(skb)->cutlen = U32_MAX;
if (nla_is_last(a, rem)) {
consume_skb(skb);
return 0;
--- a/net/openvswitch/datapath.c
+++ b/net/openvswitch/datapath.c
@@ -276,7 +276,7 @@ void ovs_dp_process_packet(struct sk_buf
upcall.portid = ovs_vport_find_upcall_portid(p, skb);
upcall.mru = OVS_CB(skb)->mru;
- error = ovs_dp_upcall(dp, skb, key, &upcall, 0);
+ error = ovs_dp_upcall(dp, skb, key, &upcall, U32_MAX);
switch (error) {
case 0:
case -EAGAIN:
@@ -457,7 +457,8 @@ static int queue_userspace_packet(struct
struct sk_buff *nskb = NULL;
struct sk_buff *user_skb = NULL; /* to be queued to userspace */
struct nlattr *nla;
- size_t len;
+ size_t msg_size;
+ size_t skb_len;
unsigned int hlen;
int err, dp_ifindex;
u64 hash;
@@ -478,7 +479,8 @@ static int queue_userspace_packet(struct
skb = nskb;
}
- if (nla_attr_size(skb->len) > USHRT_MAX) {
+ skb_len = min(skb->len, cutlen);
+ if (nla_attr_size(skb_len) > USHRT_MAX) {
err = -EFBIG;
goto out;
}
@@ -493,13 +495,13 @@ static int queue_userspace_packet(struct
* padding logic. Only perform zerocopy if padding is not required.
*/
if (dp->user_features & OVS_DP_F_UNALIGNED)
- hlen = skb_zerocopy_headlen(skb);
+ hlen = min(skb_zerocopy_headlen(skb), cutlen);
else
- hlen = skb->len;
+ hlen = skb_len;
- len = upcall_msg_size(upcall_info, hlen - cutlen,
- OVS_CB(skb)->acts_origlen);
- user_skb = genlmsg_new(len, GFP_ATOMIC);
+ msg_size = upcall_msg_size(upcall_info, hlen,
+ OVS_CB(skb)->acts_origlen);
+ user_skb = genlmsg_new(msg_size, GFP_ATOMIC);
if (!user_skb) {
err = -ENOMEM;
goto out;
@@ -560,7 +562,7 @@ static int queue_userspace_packet(struct
}
/* Add OVS_PACKET_ATTR_LEN when packet is truncated */
- if (cutlen > 0 &&
+ if (skb_len < skb->len &&
nla_put_u32(user_skb, OVS_PACKET_ATTR_LEN, skb->len)) {
err = -ENOBUFS;
goto out;
@@ -585,9 +587,9 @@ static int queue_userspace_packet(struct
err = -ENOBUFS;
goto out;
}
- nla->nla_len = nla_attr_size(skb->len - cutlen);
+ nla->nla_len = nla_attr_size(skb_len);
- err = skb_zerocopy(user_skb, skb, skb->len - cutlen, hlen);
+ err = skb_zerocopy(user_skb, skb, skb_len, hlen);
if (err)
goto out;
@@ -644,6 +646,7 @@ static int ovs_packet_cmd_execute(struct
packet->ignore_df = 1;
}
OVS_CB(packet)->mru = mru;
+ OVS_CB(packet)->cutlen = U32_MAX;
if (a[OVS_PACKET_ATTR_HASH]) {
hash = nla_get_u64(a[OVS_PACKET_ATTR_HASH]);
--- a/net/openvswitch/datapath.h
+++ b/net/openvswitch/datapath.h
@@ -118,7 +118,7 @@ struct datapath {
* @mru: The maximum received fragement size; 0 if the packet is not
* fragmented.
* @acts_origlen: The netlink size of the flow actions applied to this skb.
- * @cutlen: The number of bytes from the packet end to be removed.
+ * @cutlen: The number of bytes in the packet to preserve on output.
* @probability: The sampling probability that was applied to this skb; 0 means
* no sampling has occurred; U32_MAX means 100% probability.
* @upcall_pid: Netlink socket PID to use for sending this packet to userspace;
--- a/net/openvswitch/vport.c
+++ b/net/openvswitch/vport.c
@@ -503,7 +503,7 @@ int ovs_vport_receive(struct vport *vpor
OVS_CB(skb)->input_vport = vport;
OVS_CB(skb)->mru = 0;
- OVS_CB(skb)->cutlen = 0;
+ OVS_CB(skb)->cutlen = U32_MAX;
OVS_CB(skb)->probability = 0;
OVS_CB(skb)->upcall_pid = 0;
if (unlikely(dev_net(skb->dev) != ovs_dp_get_net(vport->dp))) {
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 560/675] ovpn: fix peer refcount leak in TCP error paths
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (558 preceding siblings ...)
2026-07-30 14:14 ` [PATCH 6.18 559/675] openvswitch: fix GSO userspace truncation underflow Greg Kroah-Hartman
@ 2026-07-30 14:14 ` Greg Kroah-Hartman
2026-07-30 14:14 ` [PATCH 6.18 561/675] ovpn: hold peer before scheduling keepalive work Greg Kroah-Hartman
` (119 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:14 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Pavitra Jha, Sabrina Dubroca,
Antonio Quartulli
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Pavitra Jha <jhapavitra98@gmail.com>
commit 63bbe18fc03062f483c627838a566a707b62da79 upstream.
When either the TCP RX or TX error path calls ovpn_peer_hold() followed
by schedule_work(&peer->tcp.defer_del_work), and the work item is already
pending from the other path, schedule_work() returns false and the work
runs only once. Since ovpn_tcp_peer_del_work() calls ovpn_peer_put()
exactly once, the extra reference taken by the losing path is never
dropped, leaking the peer object.
The race window:
CPU0 (strparser/RX error): CPU1 (tcp_tx_work/TX error):
ovpn_peer_hold() <- refcnt+1 ovpn_peer_hold() <- refcnt+2
schedule_work() <- queued schedule_work() <- NO-OP
(work already pending)
ovpn_tcp_peer_del_work runs:
ovpn_peer_del()
ovpn_peer_put() <- refcnt+1
<- peer never freed
Fix by checking the return value of schedule_work() in both paths and
calling ovpn_peer_put() to drop the extra reference if the work was
already pending. ovpn_peer_hold() is kept unconditional in the TX path
as it cannot fail at that point.
Fixes: a6a5e87b3ee4 ("ovpn: avoid sleep in atomic context in TCP RX error path")
Cc: stable@vger.kernel.org
Signed-off-by: Pavitra Jha <jhapavitra98@gmail.com>
Reviewed-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: Antonio Quartulli <antonio@openvpn.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/ovpn/tcp.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ovpn/tcp.c b/drivers/net/ovpn/tcp.c
index 433bd07a4f1b..0af14055c39a 100644
--- a/drivers/net/ovpn/tcp.c
+++ b/drivers/net/ovpn/tcp.c
@@ -151,7 +151,8 @@ static void ovpn_tcp_rcv(struct strparser *strp, struct sk_buff *skb)
/* take reference for deferred peer deletion. should never fail */
if (WARN_ON(!ovpn_peer_hold(peer)))
goto err_nopeer;
- schedule_work(&peer->tcp.defer_del_work);
+ if (!schedule_work(&peer->tcp.defer_del_work))
+ ovpn_peer_put(peer);
ovpn_dev_dstats_rx_dropped(peer->ovpn->dev);
err_nopeer:
kfree_skb(skb);
@@ -283,7 +284,8 @@ static void ovpn_tcp_send_sock(struct ovpn_peer *peer, struct sock *sk)
* stream therefore we abort the connection
*/
ovpn_peer_hold(peer);
- schedule_work(&peer->tcp.defer_del_work);
+ if (!schedule_work(&peer->tcp.defer_del_work))
+ ovpn_peer_put(peer);
/* we bail out immediately and keep tx_in_progress set
* to true. This way we prevent more TX attempts
--
2.55.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 561/675] ovpn: hold peer before scheduling keepalive work
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (559 preceding siblings ...)
2026-07-30 14:14 ` [PATCH 6.18 560/675] ovpn: fix peer refcount leak in TCP error paths Greg Kroah-Hartman
@ 2026-07-30 14:14 ` Greg Kroah-Hartman
2026-07-30 14:14 ` [PATCH 6.18 562/675] pppoe: reload header pointer after dev_hard_header() Greg Kroah-Hartman
` (118 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:14 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Shuvam Pandey, Sabrina Dubroca,
Antonio Quartulli
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Shuvam Pandey <shuvampandey1@gmail.com>
commit a4710ae2e7e322fdaefb4be8604228279cfaf48c upstream.
ovpn_peer_keepalive_send() passes its peer reference to
ovpn_xmit_special(), which ultimately drops it. The keepalive scheduler
currently queues the work first and takes the reference only after
schedule_work() reports that the work was queued.
Once schedule_work() queues the item, another CPU may run the worker
before the caller gets to ovpn_peer_hold(). In that case the worker can
consume a reference that was not acquired for it, corrupting the peer
lifetime accounting.
Take the peer reference before queueing the work and drop it again when
the work was already pending.
Fixes: 3ecfd9349f40 ("ovpn: implement keepalive mechanism")
Cc: stable@vger.kernel.org
Signed-off-by: Shuvam Pandey <shuvampandey1@gmail.com>
Reviewed-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: Antonio Quartulli <antonio@openvpn.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/ovpn/peer.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
--- a/drivers/net/ovpn/peer.c
+++ b/drivers/net/ovpn/peer.c
@@ -1280,8 +1280,10 @@ static time64_t ovpn_peer_keepalive_work
netdev_dbg(peer->ovpn->dev,
"sending keepalive to peer %u\n",
peer->id);
- if (schedule_work(&peer->keepalive_work))
- ovpn_peer_hold(peer);
+ if (WARN_ON(!ovpn_peer_hold(peer)))
+ return 0;
+ if (!schedule_work(&peer->keepalive_work))
+ ovpn_peer_put(peer);
}
if (next_run1 < next_run2)
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 562/675] pppoe: reload header pointer after dev_hard_header()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (560 preceding siblings ...)
2026-07-30 14:14 ` [PATCH 6.18 561/675] ovpn: hold peer before scheduling keepalive work Greg Kroah-Hartman
@ 2026-07-30 14:14 ` Greg Kroah-Hartman
2026-07-30 14:14 ` [PATCH 6.18 563/675] rtase: Workaround for TX hang caused by hardware packet parsing Greg Kroah-Hartman
` (117 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:14 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Asim Viladi Oglu Manizada,
Vadim Fedorenko, Eric Dumazet, Jakub Kicinski
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Asim Viladi Oglu Manizada <manizada@pm.me>
commit e9c238f6fe42fb1b4dba3a578277de32cb487937 upstream.
pppoe_sendmsg() saves a pointer to the PPPoE header before calling
dev_hard_header(). Device header callbacks are allowed to reallocate the
skb head, invalidating pointers into it.
This can happen when a send is blocked in copy_from_user() while the first
non-Ethernet port is added to an empty team device. The team's delegated
GRE header callback then expands the skb head. PPPoE subsequently writes
six bytes through the stale pointer into the freed head.
Reload the PPPoE header through the skb's network-header offset after
device header creation. pskb_expand_head() updates that offset when it
relocates the head.
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Cc: stable@vger.kernel.org
Signed-off-by: Asim Viladi Oglu Manizada <manizada@pm.me>
Reviewed-by: Vadim Fedorenko <vadim.fedorenko@linux.dev>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://patch.msgid.link/20260722093814.3017176-1-manizada@pm.me
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/ppp/pppoe.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/net/ppp/pppoe.c
+++ b/drivers/net/ppp/pppoe.c
@@ -903,6 +903,7 @@ static int pppoe_sendmsg(struct socket *
dev_hard_header(skb, dev, ETH_P_PPP_SES,
po->pppoe_pa.remote, NULL, total_len);
+ ph = pppoe_hdr(skb);
memcpy(ph, &hdr, sizeof(struct pppoe_hdr));
ph->length = htons(total_len);
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 563/675] rtase: Workaround for TX hang caused by hardware packet parsing
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (561 preceding siblings ...)
2026-07-30 14:14 ` [PATCH 6.18 562/675] pppoe: reload header pointer after dev_hard_header() Greg Kroah-Hartman
@ 2026-07-30 14:14 ` Greg Kroah-Hartman
2026-07-30 14:14 ` [PATCH 6.18 564/675] tcp: initialize standalone TCP-AO response padding Greg Kroah-Hartman
` (116 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:14 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Justin Lai, Simon Horman,
Jakub Kicinski
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Justin Lai <justinlai0215@realtek.com>
commit 1c50efa1faf3a1a96e100b07ec7a2f3164d90bee upstream.
The hardware performs packet parsing before packet transmission.
Parsing incomplete IPv4, IPv6, TCP, or UDP headers may trigger a TX
hang because the hardware parser expects additional protocol header
data that is not present in the packet.
The hardware performs additional PTP parsing on UDP packets identified
by destination ports 319/320 at the expected UDP destination port
offset.
If such a packet has transport data smaller than RTASE_MIN_PAD_LEN,
the hardware parser expects additional packet data and may trigger a
TX hang.
To avoid these hardware issues, the driver applies the following
workarounds.
Drop malformed packets that may trigger this hardware issue before
transmission.
For IPv4 non-initial fragments, the hardware does not check the
fragment offset before parsing the expected transport header location.
As a result, these packets are still subject to transport header
parsing even though they do not contain a transport header. If the
transport data is shorter than the minimum transport header required
by the hardware parser, pad the transport data to the minimum
transport header length required by the hardware parser. Packets that
also match the hardware PTP parsing conditions continue to follow the
corresponding workaround.
For IPv6 fragmented packets, neither of the above hardware issues
occurs because the hardware only continues packet parsing when the
IPv6 Base Header Next Header field directly indicates UDP. Packets
carrying a Fragment Header do not continue through the subsequent
packet parsing stages.
For packets identified for hardware PTP parsing, pad the transport
data so it reaches RTASE_MIN_PAD_LEN before transmission.
Fixes: d6e882b89fdf ("rtase: Implement .ndo_start_xmit function")
Cc: stable@vger.kernel.org
Signed-off-by: Justin Lai <justinlai0215@realtek.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20260709103456.83789-1-justinlai0215@realtek.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/ethernet/realtek/rtase/rtase.h | 8
drivers/net/ethernet/realtek/rtase/rtase_main.c | 197 ++++++++++++++++++++++++
2 files changed, 205 insertions(+)
--- a/drivers/net/ethernet/realtek/rtase/rtase.h
+++ b/drivers/net/ethernet/realtek/rtase/rtase.h
@@ -188,6 +188,12 @@ enum rtase_sw_flag_content {
RTASE_SWF_MSIX_ENABLED = BIT(2),
};
+enum rtase_parse_result {
+ RTASE_PARSE_OK,
+ RTASE_PARSE_SKIP,
+ RTASE_PARSE_DROP,
+};
+
#define RSVD_MASK 0x3FFFC000
struct rtase_tx_desc {
@@ -359,4 +365,6 @@ struct rtase_private {
#define RTASE_MSS_MASK GENMASK(28, 18)
+#define RTASE_MIN_PAD_LEN 47
+
#endif /* RTASE_H */
--- a/drivers/net/ethernet/realtek/rtase/rtase_main.c
+++ b/drivers/net/ethernet/realtek/rtase/rtase_main.c
@@ -61,6 +61,7 @@
#include <linux/pci.h>
#include <linux/pm_runtime.h>
#include <linux/prefetch.h>
+#include <linux/ptp_classify.h>
#include <linux/rtnetlink.h>
#include <linux/tcp.h>
#include <asm/irq.h>
@@ -1249,6 +1250,199 @@ static u32 rtase_tx_csum(struct sk_buff
return csum_cmd;
}
+static enum rtase_parse_result rtase_get_l3_proto(struct sk_buff *skb,
+ __be16 *proto,
+ u32 *network_offset)
+{
+ struct vlan_hdr *vh, _vh;
+ struct ethhdr *eh, _eh;
+ u32 offset = ETH_HLEN;
+
+ eh = skb_header_pointer(skb, 0, sizeof(_eh), &_eh);
+ if (!eh)
+ return RTASE_PARSE_DROP;
+
+ *proto = eh->h_proto;
+
+ while (eth_type_vlan(*proto)) {
+ vh = skb_header_pointer(skb, offset, sizeof(_vh), &_vh);
+ if (!vh)
+ return RTASE_PARSE_DROP;
+
+ *proto = vh->h_vlan_encapsulated_proto;
+ offset += VLAN_HLEN;
+ }
+
+ *network_offset = offset;
+
+ return RTASE_PARSE_OK;
+}
+
+static bool rtase_pad_to_transport_len(struct sk_buff *skb,
+ u32 transport_offset,
+ u32 pad_to_len)
+{
+ u32 trans_data_len;
+ u32 pad_len;
+
+ trans_data_len = skb->len - transport_offset;
+ if (trans_data_len >= pad_to_len)
+ return true;
+
+ if (skb_is_nonlinear(skb)) {
+ if (skb_linearize(skb))
+ return false;
+ }
+
+ pad_len = pad_to_len - trans_data_len;
+ if (__skb_put_padto(skb, skb->len + pad_len, false))
+ return false;
+
+ return true;
+}
+
+static enum rtase_parse_result rtase_get_transport_offset(struct sk_buff *skb,
+ u32 *transport_offset,
+ u8 *transport_proto,
+ u32 *pad_to_len)
+{
+ enum rtase_parse_result ret;
+ struct ipv6hdr *i6h, _i6h;
+ struct iphdr *ih, _ih;
+ bool non_first_frag;
+ __be16 proto;
+ u32 offset;
+ u32 no;
+
+ ret = rtase_get_l3_proto(skb, &proto, &no);
+ if (ret != RTASE_PARSE_OK)
+ return ret;
+
+ switch (proto) {
+ case htons(ETH_P_IP):
+ ih = skb_header_pointer(skb, no, sizeof(_ih), &_ih);
+ if (!ih)
+ return RTASE_PARSE_DROP;
+
+ if (ih->ihl < 5)
+ return RTASE_PARSE_DROP;
+
+ offset = no + ih->ihl * 4;
+ if (offset > skb->len)
+ return RTASE_PARSE_DROP;
+
+ non_first_frag = ntohs(ih->frag_off) & IP_OFFSET;
+
+ if (ih->protocol == IPPROTO_TCP) {
+ if (skb->len - offset < sizeof(struct tcphdr)) {
+ if (non_first_frag) {
+ *transport_offset = offset;
+ *transport_proto = IPPROTO_TCP;
+ *pad_to_len = sizeof(struct tcphdr);
+
+ return RTASE_PARSE_OK;
+ }
+
+ return RTASE_PARSE_DROP;
+ }
+
+ return RTASE_PARSE_SKIP;
+ }
+
+ if (ih->protocol != IPPROTO_UDP)
+ return RTASE_PARSE_SKIP;
+
+ *transport_offset = offset;
+ *transport_proto = IPPROTO_UDP;
+
+ if (skb->len - offset < sizeof(struct udphdr)) {
+ if (non_first_frag) {
+ *pad_to_len = sizeof(struct udphdr);
+
+ return RTASE_PARSE_OK;
+ }
+
+ return RTASE_PARSE_DROP;
+ }
+
+ return RTASE_PARSE_OK;
+
+ case htons(ETH_P_IPV6):
+ i6h = skb_header_pointer(skb, no, sizeof(_i6h), &_i6h);
+ if (!i6h)
+ return RTASE_PARSE_DROP;
+
+ offset = no + sizeof(*i6h);
+
+ if (i6h->nexthdr == IPPROTO_TCP) {
+ if (skb->len - offset < sizeof(struct tcphdr))
+ return RTASE_PARSE_DROP;
+
+ return RTASE_PARSE_SKIP;
+ }
+
+ if (i6h->nexthdr != IPPROTO_UDP)
+ return RTASE_PARSE_SKIP;
+
+ if (skb->len - offset < sizeof(struct udphdr))
+ return RTASE_PARSE_DROP;
+
+ *transport_offset = offset;
+ *transport_proto = IPPROTO_UDP;
+
+ return RTASE_PARSE_OK;
+
+ default:
+ return RTASE_PARSE_SKIP;
+ }
+}
+
+static bool rtase_skb_pad(struct sk_buff *skb)
+{
+ enum rtase_parse_result ret;
+ u32 transport_offset;
+ __be16 *dest, _dest;
+ u32 trans_data_len;
+ u32 pad_to_len = 0;
+ u8 transport_proto;
+ u16 dest_port;
+
+ ret = rtase_get_transport_offset(skb, &transport_offset,
+ &transport_proto, &pad_to_len);
+ if (ret == RTASE_PARSE_SKIP) {
+ return true;
+ } else if (ret == RTASE_PARSE_DROP) {
+ netdev_dbg(skb->dev, "drop malformed packet\n");
+ return false;
+ }
+
+ if (pad_to_len &&
+ !rtase_pad_to_transport_len(skb, transport_offset, pad_to_len))
+ return false;
+
+ if (transport_proto != IPPROTO_UDP)
+ return true;
+
+ trans_data_len = skb->len - transport_offset;
+ if (trans_data_len < offsetof(struct udphdr, len) ||
+ trans_data_len >= RTASE_MIN_PAD_LEN)
+ return true;
+
+ dest = skb_header_pointer(skb,
+ transport_offset +
+ offsetof(struct udphdr, dest),
+ sizeof(_dest), &_dest);
+ if (!dest)
+ return true;
+
+ dest_port = ntohs(*dest);
+ if (dest_port != PTP_EV_PORT && dest_port != PTP_GEN_PORT)
+ return true;
+
+ return rtase_pad_to_transport_len(skb, transport_offset,
+ RTASE_MIN_PAD_LEN);
+}
+
static int rtase_xmit_frags(struct rtase_ring *ring, struct sk_buff *skb,
u32 opts1, u32 opts2)
{
@@ -1362,6 +1556,9 @@ static netdev_tx_t rtase_start_xmit(stru
opts2 |= rtase_tx_csum(skb, dev);
}
+ if (!rtase_skb_pad(skb))
+ goto err_dma_0;
+
frags = rtase_xmit_frags(ring, skb, opts1, opts2);
if (unlikely(frags < 0))
goto err_dma_0;
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 564/675] tcp: initialize standalone TCP-AO response padding
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (562 preceding siblings ...)
2026-07-30 14:14 ` [PATCH 6.18 563/675] rtase: Workaround for TX hang caused by hardware packet parsing Greg Kroah-Hartman
@ 2026-07-30 14:14 ` Greg Kroah-Hartman
2026-07-30 14:14 ` [PATCH 6.18 565/675] tcp: challenge ACK for non-exact RST in SYN-RECEIVED Greg Kroah-Hartman
` (115 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:14 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Yizhou Zhao, Yuxiang Yang, Ao Wang,
Xuewei Feng, Qi Li, Ke Xu, Eric Dumazet, Jakub Kicinski
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Yizhou Zhao <zhaoyz24@mails.tsinghua.edu.cn>
commit e1a9d3cc11829c5414a75eb39c704f461936eb24 upstream.
tcp_v4_send_ack() and tcp_v6_send_response() construct standalone TCP
responses with TCP-AO options. The option length carries the actual MAC
length, but the TCP header length includes the option rounded up to a
four-byte boundary.
tcp_ao_hash_hdr() writes the MAC only. Thus, when the MAC length is not
four-byte aligned, the one to three bytes after the MAC are left
uninitialized and may be transmitted. For the normal TCP-AO hashing
mode, those bytes also have to be initialized before computing the MAC.
Initialize only the alignment padding in the TCP-AO branches, before
hashing the header. Use TCPOPT_NOP, as in the normal TCP-AO output path.
This avoids adding work to non-AO TCP responses while preserving a valid
authenticated header.
Fixes: decde2586b34 ("net/tcp: Add TCP-AO sign to twsk")
Fixes: da7dfaa6d6f7 ("net/tcp: Consistently align TCP-AO option in the header")
Cc: stable@vger.kernel.org
Reported-by: Yizhou Zhao <zhaoyz24@mails.tsinghua.edu.cn>
Reported-by: Yuxiang Yang <yangyx22@mails.tsinghua.edu.cn>
Reported-by: Ao Wang <wangao@seu.edu.cn>
Reported-by: Xuewei Feng <fengxw06@126.com>
Reported-by: Qi Li <qli01@tsinghua.edu.cn>
Reported-by: Ke Xu <xuke@tsinghua.edu.cn>
Suggested-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Yizhou Zhao <zhaoyz24@mails.tsinghua.edu.cn>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://patch.msgid.link/20260713105631.8616-1-zhaoyz24@mails.tsinghua.edu.cn
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/ipv4/tcp_ipv4.c | 3 +++
net/ipv6/tcp_ipv6.c | 2 ++
2 files changed, 5 insertions(+)
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -998,6 +998,9 @@ static void tcp_v4_send_ack(const struct
key->rcv_next);
arg.iov[0].iov_len += tcp_ao_len_aligned(key->ao_key);
rep.th.doff = arg.iov[0].iov_len / 4;
+ memset((u8 *)&rep.opt[offset] + tcp_ao_maclen(key->ao_key),
+ TCPOPT_NOP, tcp_ao_len_aligned(key->ao_key) -
+ tcp_ao_len(key->ao_key));
tcp_ao_hash_hdr(AF_INET, (char *)&rep.opt[offset],
key->ao_key, key->traffic_key,
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -941,6 +941,8 @@ static void tcp_v6_send_response(const s
(tcp_ao_len(key->ao_key) << 16) |
(key->ao_key->sndid << 8) |
(key->rcv_next));
+ memset((u8 *)topt + tcp_ao_maclen(key->ao_key), TCPOPT_NOP,
+ tcp_ao_len_aligned(key->ao_key) - tcp_ao_len(key->ao_key));
tcp_ao_hash_hdr(AF_INET6, (char *)topt, key->ao_key,
key->traffic_key,
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 565/675] tcp: challenge ACK for non-exact RST in SYN-RECEIVED
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (563 preceding siblings ...)
2026-07-30 14:14 ` [PATCH 6.18 564/675] tcp: initialize standalone TCP-AO response padding Greg Kroah-Hartman
@ 2026-07-30 14:14 ` Greg Kroah-Hartman
2026-07-30 14:14 ` [PATCH 6.18 566/675] tipc: clear sock->sk on the failed-insert path in tipc_sk_create() Greg Kroah-Hartman
` (114 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:14 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Yuxiang Yang, Yizhou Zhao, Ao Wang,
Xuewei Feng, Qi Li, Ke Xu, Eric Dumazet, Jakub Kicinski
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Yuxiang Yang <yangyx22@mails.tsinghua.edu.cn>
commit a28c4fcbf774e23b4779cae468e3497a5ad1f4a1 upstream.
The SYN-RECEIVED request-socket path in tcp_check_req() accepts an
in-window RST without requiring SEG.SEQ to exactly match RCV.NXT. A
non-exact RST therefore removes the request instead of eliciting a
challenge ACK.
RFC 9293 section 3.10.7.4 applies the RFC 5961 reset check in
SYN-RECEIVED: an exact RST resets the connection, while a non-exact
in-window RST must trigger a challenge ACK and be dropped.
Apply that check before the ACK-field validation, following the RFC
sequence-number, RST, then ACK processing order. Factor the per-netns
challenge ACK quota out of tcp_send_challenge_ack() so request sockets
can share it. Use the request socket's send_ack() callback and its own
out-of-window ACK timestamp to send and rate-limit the response.
Reported-by: Yuxiang Yang <yangyx22@mails.tsinghua.edu.cn>
Reported-by: Yizhou Zhao <zhaoyz24@mails.tsinghua.edu.cn>
Reported-by: Ao Wang <wangao@seu.edu.cn>
Reported-by: Xuewei Feng <fengxw06@126.com>
Reported-by: Qi Li <qli01@tsinghua.edu.cn>
Reported-by: Ke Xu <xuke@tsinghua.edu.cn>
Fixes: 282f23c6ee34 ("tcp: implement RFC 5961 3.2")
Cc: stable@vger.kernel.org
Signed-off-by: Yuxiang Yang <yangyx22@mails.tsinghua.edu.cn>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://patch.msgid.link/20260717081443.809393-2-yangyx22@mails.tsinghua.edu.cn
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
include/net/tcp.h | 2 +
net/ipv4/tcp_input.c | 56 ++++++++++++++++++++++++++++++++++++-----------
net/ipv4/tcp_minisocks.c | 12 +++++++++-
3 files changed, 56 insertions(+), 14 deletions(-)
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -1878,6 +1878,8 @@ static inline void tcp_fast_path_check(s
bool tcp_oow_rate_limited(struct net *net, const struct sk_buff *skb,
int mib_idx, u32 *last_oow_ack_time);
+void tcp_reqsk_send_challenge_ack(struct sock *sk, struct sk_buff *skb,
+ struct request_sock *req);
static inline void tcp_mib_init(struct net *net)
{
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -3820,24 +3820,17 @@ static void tcp_send_ack_reflect_ect(str
__tcp_send_ack(sk, tp->rcv_nxt, flags);
}
-/* RFC 5961 7 [ACK Throttling] */
-static void tcp_send_challenge_ack(struct sock *sk, bool accecn_reflector)
+/* Consume one slot from the per-netns RFC 5961 challenge ACK quota.
+ * Returns true if a challenge ACK may be sent.
+ */
+static bool tcp_challenge_ack_allowed(struct net *net)
{
- struct tcp_sock *tp = tcp_sk(sk);
- struct net *net = sock_net(sk);
u32 count, now, ack_limit;
- /* First check our per-socket dupack rate limit. */
- if (__tcp_oow_rate_limited(net,
- LINUX_MIB_TCPACKSKIPPEDCHALLENGE,
- &tp->last_oow_ack_time))
- return;
-
ack_limit = READ_ONCE(net->ipv4.sysctl_tcp_challenge_ack_limit);
if (ack_limit == INT_MAX)
- goto send_ack;
+ return true;
- /* Then check host-wide RFC 5961 rate limit. */
now = jiffies / HZ;
if (now != READ_ONCE(net->ipv4.tcp_challenge_timestamp)) {
u32 half = (ack_limit + 1) >> 1;
@@ -3849,12 +3842,49 @@ static void tcp_send_challenge_ack(struc
count = READ_ONCE(net->ipv4.tcp_challenge_count);
if (count > 0) {
WRITE_ONCE(net->ipv4.tcp_challenge_count, count - 1);
-send_ack:
+ return true;
+ }
+ return false;
+}
+
+/* RFC 5961 7 [ACK Throttling] */
+static void tcp_send_challenge_ack(struct sock *sk, bool accecn_reflector)
+{
+ struct tcp_sock *tp = tcp_sk(sk);
+ struct net *net = sock_net(sk);
+
+ /* First check our per-socket dupack rate limit. */
+ if (__tcp_oow_rate_limited(net,
+ LINUX_MIB_TCPACKSKIPPEDCHALLENGE,
+ &tp->last_oow_ack_time))
+ return;
+
+ /* Then check the per-netns RFC 5961 rate limit. */
+ if (tcp_challenge_ack_allowed(net)) {
NET_INC_STATS(net, LINUX_MIB_TCPCHALLENGEACK);
tcp_send_ack_reflect_ect(sk, accecn_reflector);
}
}
+/* Send a challenge ACK from a SYN-RECEIVED request socket. Uses
+ * __tcp_oow_rate_limited() directly so that an RST carrying payload
+ * cannot bypass the per-request rate limit.
+ */
+void tcp_reqsk_send_challenge_ack(struct sock *sk, struct sk_buff *skb,
+ struct request_sock *req)
+{
+ struct net *net = sock_net(sk);
+
+ if (__tcp_oow_rate_limited(net, LINUX_MIB_TCPACKSKIPPEDCHALLENGE,
+ &tcp_rsk(req)->last_oow_ack_time))
+ return;
+
+ if (tcp_challenge_ack_allowed(net)) {
+ NET_INC_STATS(net, LINUX_MIB_TCPCHALLENGEACK);
+ req->rsk_ops->send_ack(sk, skb, req);
+ }
+}
+
static void tcp_store_ts_recent(struct tcp_sock *tp)
{
tp->rx_opt.ts_recent = tp->rx_opt.rcv_tsval;
--- a/net/ipv4/tcp_minisocks.c
+++ b/net/ipv4/tcp_minisocks.c
@@ -822,7 +822,7 @@ struct sock *tcp_check_req(struct sock *
* elsewhere and is checked directly against the child socket rather
* than req because user data may have been sent out.
*/
- if ((flg & TCP_FLAG_ACK) && !fastopen &&
+ if ((flg & TCP_FLAG_ACK) && !(flg & TCP_FLAG_RST) && !fastopen &&
(TCP_SKB_CB(skb)->ack_seq !=
tcp_rsk(req)->snt_isn + 1))
return sk;
@@ -861,6 +861,16 @@ struct sock *tcp_check_req(struct sock *
flg &= ~TCP_FLAG_SYN;
}
+ /* RFC 5961 section 3.2, as clarified by RFC 9293 section
+ * 3.10.7.4, requires a challenge ACK for a non-exact
+ * in-window RST in SYN-RECEIVED.
+ */
+ if ((flg & TCP_FLAG_RST) &&
+ TCP_SKB_CB(skb)->seq != tcp_rsk(req)->rcv_nxt) {
+ tcp_reqsk_send_challenge_ack(sk, skb, req);
+ return NULL;
+ }
+
/* RFC793: "second check the RST bit" and
* "fourth, check the SYN bit"
*/
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 566/675] tipc: clear sock->sk on the failed-insert path in tipc_sk_create()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (564 preceding siblings ...)
2026-07-30 14:14 ` [PATCH 6.18 565/675] tcp: challenge ACK for non-exact RST in SYN-RECEIVED Greg Kroah-Hartman
@ 2026-07-30 14:14 ` Greg Kroah-Hartman
2026-07-30 14:14 ` [PATCH 6.18 567/675] vsock/virtio: collapse receive queue under memory pressure Greg Kroah-Hartman
` (113 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:14 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Tung Nguyen, Breno Leitao,
Daehyeon Ko, Simon Horman, Paolo Abeni
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Daehyeon Ko <4ncienth@gmail.com>
commit ba0533fc163f905fe817cfabdf8ed4058da44800 upstream.
When tipc_sk_create() fails to insert the new socket (tipc_sk_insert()
returns non-zero), its error path frees the sk with sk_free() but leaves
sock->sk pointing at the freed object:
if (tipc_sk_insert(tsk)) {
sk_free(sk);
pr_warn("Socket create failed; port number exhausted\n");
return -EINVAL;
}
This is harmless for plain socket(): the syscall layer clears sock->ops
before releasing, so tipc_release() is never called. It is not harmless
on the accept() path. tipc_accept() creates the pre-allocated child
socket with tipc_sk_create(net, new_sock, 0, kern); on failure it leaves
new_sock->sk dangling and new_sock->ops non-NULL, and do_accept() then
fput()s the new file, so __sock_release() -> tipc_release() runs
lock_sock(new_sock->sk) on the freed sk -- a use-after-free write of the
sk_lock spinlock.
tipc_release() already guards this exact "failed accept() releases a
pre-allocated child" case with "if (sk == NULL) return 0;", but the
guard is bypassed because tipc_sk_create() left sock->sk non-NULL
(dangling) rather than NULL.
Clear sock->sk on the failed-insert path so the existing tipc_release()
NULL check fires and the use-after-free is avoided.
The tipc_sk_insert() failure is reached when the per-netns socket
rhashtable hits its max_size (tsk_rht_params.max_size = 1048576, ~2M
elements) -- i.e. once a netns holds ~2M TIPC sockets every insert
returns -E2BIG.
BUG: KASAN: slab-use-after-free in lock_sock_nested (net/core/sock.c:3839)
Write of size 8 at addr ffff8880047cdc38 by task init/1
lock_sock_nested (net/core/sock.c:3839)
tipc_release (net/tipc/socket.c:638)
__sock_release (net/socket.c:710)
sock_close (net/socket.c:1501)
__fput (fs/file_table.c:512)
Allocated by task 1:
sk_alloc (net/core/sock.c:2308)
tipc_sk_create (net/tipc/socket.c:487)
tipc_accept (net/tipc/socket.c:2744)
do_accept (net/socket.c:2034)
Freed by task 1:
__sk_destruct (net/core/sock.c:2391)
tipc_sk_create (net/tipc/socket.c:504)
tipc_accept (net/tipc/socket.c:2744)
do_accept (net/socket.c:2034)
Fixes: 00aff3590fc0 ("net: tipc: fix possible refcount leak in tipc_sk_create()")
Cc: stable@vger.kernel.org
Reviewed-by: Tung Nguyen <tung.quang.nguyen@est.tech>
Reviewed-by: Breno Leitao <leitao@debian.org>
Signed-off-by: Daehyeon Ko <4ncienth@gmail.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20260714131939.1255974-1-4ncienth@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/tipc/socket.c | 1 +
1 file changed, 1 insertion(+)
--- a/net/tipc/socket.c
+++ b/net/tipc/socket.c
@@ -501,6 +501,7 @@ static int tipc_sk_create(struct net *ne
tipc_set_sk_state(sk, TIPC_OPEN);
if (tipc_sk_insert(tsk)) {
sk_free(sk);
+ sock->sk = NULL;
pr_warn("Socket create failed; port number exhausted\n");
return -EINVAL;
}
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 567/675] vsock/virtio: collapse receive queue under memory pressure
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (565 preceding siblings ...)
2026-07-30 14:14 ` [PATCH 6.18 566/675] tipc: clear sock->sk on the failed-insert path in tipc_sk_create() Greg Kroah-Hartman
@ 2026-07-30 14:14 ` Greg Kroah-Hartman
2026-07-30 14:14 ` [PATCH 6.18 568/675] vxlan: mdb: Fix source list corruption on a failed replace Greg Kroah-Hartman
` (112 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:14 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Brien Oberstein, Stefano Garzarella,
Michael S. Tsirkin, Bobby Eshleman, Paolo Abeni
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Stefano Garzarella <sgarzare@redhat.com>
commit 2a12c05aef213ff304ecc9e2f351de20731946b8 upstream.
When many small packets accumulate in the receive queue, the skb overhead
can exceed buf_alloc even while the payload is within bounds. This causes
virtio_transport_inc_rx_pkt() to reject packets, leading to connection
resets during large transfers under backpressure.
The issue was reported by Brien, who has a reproducer, but it is also
easily reproducible with iperf-vsock [1] using a small packet size:
iperf3 --vsock -c $CID -l 129
which fails immediately without this patch but with commit 059b7dbd20a6
("vsock/virtio: fix potential unbounded skb queue").
Inspired by TCP's tcp_collapse() which solves a similar problem, add
virtio_transport_collapse_rx_queue() that walks the receive queue and
re-copies data into compact linear skbs to reduce the overhead.
The collapse is triggered proactively from when the number of skb queued
is close to exceeding the overhead budget.
A pre-scan counts the eligible bytes to size each allocation precisely,
avoiding waste for isolated small packets. Partially consumed skbs are
kept as-is to preserve buf_used/fwd_cnt accounting, EOM-marked skbs to
maintain SEQPACKET message boundaries, and skbs already larger than the
collapse target because they already have a good data-to-overhead ratio.
Walking a large queue may take a significant amount of time and cache
misses, causing traffic burstiness. To limit this, the collapse stops
once enough room is freed for this packet and the next one, but may
opportunistically free more to fill each collapsed skb to capacity.
[1] https://github.com/stefano-garzarella/iperf-vsock
Fixes: 059b7dbd20a6 ("vsock/virtio: fix potential unbounded skb queue")
Cc: stable@vger.kernel.org
Reported-by: Brien Oberstein <brienpub@gmail.com>
Closes: https://lore.kernel.org/netdev/618701dd023e$063de350$12b9a9f0$@gmail.com/
Tested-by: Brien Oberstein <brienpub@gmail.com>
Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Bobby Eshleman <bobbyeshleman@meta.com>
Link: https://patch.msgid.link/20260708102904.50732-2-sgarzare@redhat.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/vmw_vsock/virtio_transport_common.c | 165 +++++++++++++++++++++++++++++++-
1 file changed, 164 insertions(+), 1 deletion(-)
--- a/net/vmw_vsock/virtio_transport_common.c
+++ b/net/vmw_vsock/virtio_transport_common.c
@@ -26,6 +26,13 @@
/* Threshold for detecting small packets to copy */
#define GOOD_COPY_LEN 128
+/* Max payload that can be collapsed into a single linear skb, using the same
+ * allocation threshold as virtio_vsock_alloc_skb() to avoid adding pressure
+ * on the page allocator.
+ */
+#define MAX_COLLAPSE_LEN \
+ SKB_MAX_ORDER(VIRTIO_VSOCK_SKB_HEADROOM, PAGE_ALLOC_COSTLY_ORDER)
+
static void virtio_transport_cancel_close_work(struct vsock_sock *vsk,
bool cancel_timeout);
static s64 virtio_transport_has_space(struct virtio_vsock_sock *vvs);
@@ -422,6 +429,145 @@ static int virtio_transport_send_pkt_inf
return ret;
}
+static bool virtio_transport_can_collapse(struct sk_buff *skb)
+{
+ /* skbs that are partially consumed, mark a SEQPACKET message boundary,
+ * or are already large enough should not be collapsed: they either
+ * need special accounting, carry protocol state, or already have a
+ * good data-to-overhead ratio.
+ */
+ if (VIRTIO_VSOCK_SKB_CB(skb)->offset)
+ return false;
+ if (le32_to_cpu(virtio_vsock_hdr(skb)->flags) & VIRTIO_VSOCK_SEQ_EOM)
+ return false;
+ if (skb->len >= MAX_COLLAPSE_LEN)
+ return false;
+ return true;
+}
+
+/* Iterate through the packets in the queue starting from the current skb to
+ * count the number of bytes we can collapse.
+ */
+static unsigned int
+virtio_transport_collapse_size(struct sk_buff *skb, struct sk_buff_head *queue)
+{
+ unsigned int target = skb->len - VIRTIO_VSOCK_SKB_CB(skb)->offset;
+
+ while ((skb = skb_peek_next(skb, queue)) &&
+ virtio_transport_can_collapse(skb)) {
+ unsigned int len = skb->len - VIRTIO_VSOCK_SKB_CB(skb)->offset;
+
+ if (len > MAX_COLLAPSE_LEN - target)
+ return target;
+
+ target += len;
+ }
+
+ return target;
+}
+
+/* Called under lock_sock to compact the receive queue by merging small skbs.
+ * @min_to_free: minimum number of skbs to eliminate from the queue. May free
+ * more to fill each collapsed skb to capacity.
+ */
+static void
+virtio_transport_collapse_rx_queue(struct virtio_vsock_sock *vvs,
+ u32 min_to_free)
+{
+ struct sk_buff *skb, *next_skb, *new_skb = NULL;
+ struct sk_buff_head new_queue;
+ u32 saved = 0;
+
+ __skb_queue_head_init(&new_queue);
+
+ skb_queue_walk_safe(&vvs->rx_queue, skb, next_skb) {
+ struct virtio_vsock_hdr *hdr = virtio_vsock_hdr(skb);
+ u32 src_off = VIRTIO_VSOCK_SKB_CB(skb)->offset;
+ u32 src_len = skb->len - src_off;
+ bool keep;
+
+ keep = !virtio_transport_can_collapse(skb);
+ if (keep) {
+ /* Finalize pending collapsed skb to preserve packet
+ * ordering.
+ */
+ if (new_skb) {
+ __skb_queue_tail(&new_queue, new_skb);
+ new_skb = NULL;
+ saved--;
+ }
+ goto next;
+ }
+
+ /* Finalize if this packet won't fit in the remaining tailroom,
+ * so we can allocate a right-sized new_skb.
+ */
+ if (new_skb && src_len > skb_tailroom(new_skb)) {
+ __skb_queue_tail(&new_queue, new_skb);
+ new_skb = NULL;
+ saved--;
+ }
+
+ if (!new_skb) {
+ unsigned int alloc_size;
+
+ /* Check after finalizing to opportunistically fill
+ * each collapsed skb to capacity, merging more skbs
+ * than strictly required.
+ */
+ if (saved >= min_to_free)
+ break;
+
+ alloc_size = virtio_transport_collapse_size(skb, &vvs->rx_queue);
+
+ /* Only this skb's data is eligible, nothing to merge
+ * with. Keep as-is.
+ */
+ if (alloc_size <= src_len) {
+ keep = true;
+ goto next;
+ }
+
+ new_skb = virtio_vsock_alloc_linear_skb(alloc_size +
+ VIRTIO_VSOCK_SKB_HEADROOM, GFP_KERNEL);
+ if (!new_skb)
+ break;
+
+ memcpy(virtio_vsock_hdr(new_skb), hdr,
+ sizeof(struct virtio_vsock_hdr));
+ virtio_vsock_hdr(new_skb)->len = 0;
+ }
+
+ /* Cannot fail since src_off/src_len are within bounds, but if
+ * it does, discard new_skb to avoid queuing corrupted data.
+ */
+ if (WARN_ON_ONCE(skb_copy_bits(skb, src_off,
+ skb_put(new_skb, src_len),
+ src_len))) {
+ kfree_skb(new_skb);
+ new_skb = NULL;
+ break;
+ }
+
+ le32_add_cpu(&virtio_vsock_hdr(new_skb)->len, src_len);
+ virtio_vsock_hdr(new_skb)->flags |= hdr->flags;
+
+next:
+ __skb_unlink(skb, &vvs->rx_queue);
+ if (keep) {
+ __skb_queue_tail(&new_queue, skb);
+ } else {
+ consume_skb(skb);
+ saved++;
+ }
+ }
+
+ if (new_skb)
+ __skb_queue_tail(&new_queue, new_skb);
+
+ skb_queue_splice(&new_queue, &vvs->rx_queue);
+}
+
static bool virtio_transport_inc_rx_pkt(struct virtio_vsock_sock *vvs,
u32 len)
{
@@ -1341,12 +1487,29 @@ virtio_transport_recv_enqueue(struct vso
{
struct virtio_vsock_sock *vvs = vsk->trans;
bool can_enqueue, free_pkt = false;
+ u32 len, queue_max, queue_len;
struct virtio_vsock_hdr *hdr;
- u32 len;
hdr = virtio_vsock_hdr(skb);
len = le32_to_cpu(hdr->len);
+ /* virtio_transport_inc_rx_pkt() rejects packets when the per-skb
+ * overhead (skb_queue_len * SKB_TRUESIZE(0)) exceeds buf_alloc.
+ * Proactively collapse the queue before that happens.
+ * No rx_lock needed: lock_sock is held by caller, preventing
+ * concurrent enqueue or dequeue.
+ */
+ queue_max = vvs->buf_alloc / SKB_TRUESIZE(0);
+ queue_len = skb_queue_len(&vvs->rx_queue);
+ if (queue_len >= queue_max) {
+ /* Walking a large queue may take a significant amount of time
+ * and cache misses, causing traffic burstiness. Limit the
+ * collapse to freeing room for this packet and the next one.
+ * It may free more to fill each collapsed skb to capacity.
+ */
+ virtio_transport_collapse_rx_queue(vvs, queue_len + 2 - queue_max);
+ }
+
spin_lock_bh(&vvs->rx_lock);
can_enqueue = virtio_transport_inc_rx_pkt(vvs, len);
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 568/675] vxlan: mdb: Fix source list corruption on a failed replace
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (566 preceding siblings ...)
2026-07-30 14:14 ` [PATCH 6.18 567/675] vsock/virtio: collapse receive queue under memory pressure Greg Kroah-Hartman
@ 2026-07-30 14:14 ` Greg Kroah-Hartman
2026-07-30 14:14 ` [PATCH 6.18 569/675] watchdog: s32g_wdt: remove incorrect options in watchdog_info struct Greg Kroah-Hartman
` (111 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:14 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, James Raphael Tiovalen, Ido Schimmel,
Antoine Tenart, Nikolay Aleksandrov, Jakub Kicinski
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: James Raphael Tiovalen <jamestiotio@gmail.com>
commit dcd9b465965422b9654f6026e8a2fa8984f74c3c upstream.
When replacing the source list of an MDB remote entry, all existing
sources are first marked for deletion and vxlan_mdb_remote_srcs_add()
is then called to add the new source list. Sources present in the new
list have their deletion mark cleared, and any sources left marked
afterwards are removed.
If vxlan_mdb_remote_srcs_add() fails partway through, its error path
deletes all entries on the remote's source list. That rollback is only
correct for its other caller, vxlan_mdb_remote_add(), where the remote
was just allocated and the list contains solely entries added during
the call. On the replace path the list also holds pre-existing sources,
so a failed replace tears them down together with their (S, G)
forwarding entries instead of leaving the entry unchanged.
This is reachable from an existing (*, G) remote. An EXCLUDE filter
that loses sources starts forwarding traffic that should be blocked,
while an INCLUDE filter that loses sources drops traffic that should be
forwarded.
Mark entries created during the current pass with a new
VXLAN_SGRP_F_NEW flag. On failure, delete only those entries and clear
the deletion mark on the pre-existing ones, so a failed replace leaves
the source list untouched. Retain the flag until the whole operation
succeeds and then clear it. Also stop vxlan_mdb_remote_src_add() from
deleting a pre-existing entry it only looked up when adding that
entry's forwarding entry fails.
Fixes: a3a48de5eade ("vxlan: mdb: Add MDB control path support")
Cc: stable@vger.kernel.org
Signed-off-by: James Raphael Tiovalen <jamestiotio@gmail.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Antoine Tenart <atenart@kernel.org>
Reviewed-by: Nikolay Aleksandrov <razor@blackwall.org>
Link: https://patch.msgid.link/20260720160428.249356-1-jamestiotio@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/vxlan/vxlan_mdb.c | 30 ++++++++++++++++++------------
1 file changed, 18 insertions(+), 12 deletions(-)
--- a/drivers/net/vxlan/vxlan_mdb.c
+++ b/drivers/net/vxlan/vxlan_mdb.c
@@ -42,6 +42,7 @@ struct vxlan_mdb_remote {
};
#define VXLAN_SGRP_F_DELETE BIT(0)
+#define VXLAN_SGRP_F_NEW BIT(1)
struct vxlan_mdb_src_entry {
struct hlist_node node;
@@ -844,6 +845,7 @@ vxlan_mdb_remote_src_add(const struct vx
ent = vxlan_mdb_remote_src_entry_add(remote, &src->addr);
if (!ent)
return -ENOMEM;
+ ent->flags |= VXLAN_SGRP_F_NEW;
} else if (!(cfg->nlflags & NLM_F_REPLACE)) {
NL_SET_ERR_MSG_MOD(extack, "Source entry already exists");
return -EEXIST;
@@ -853,15 +855,16 @@ vxlan_mdb_remote_src_add(const struct vx
if (err)
goto err_src_del;
- /* Clear flags in case source entry was marked for deletion as part of
- * replace flow.
+ /* Clear the deletion mark so the entry survives the replace sweep.
+ * The new mark is retained until the whole operation succeeds.
*/
- ent->flags = 0;
+ ent->flags &= ~VXLAN_SGRP_F_DELETE;
return 0;
err_src_del:
- vxlan_mdb_remote_src_entry_del(ent);
+ if (ent->flags & VXLAN_SGRP_F_NEW)
+ vxlan_mdb_remote_src_entry_del(ent);
return err;
}
@@ -889,11 +892,19 @@ static int vxlan_mdb_remote_srcs_add(con
goto err_src_del;
}
+ hlist_for_each_entry(ent, &remote->src_list, node)
+ ent->flags &= ~VXLAN_SGRP_F_NEW;
+
return 0;
err_src_del:
- hlist_for_each_entry_safe(ent, tmp, &remote->src_list, node)
- vxlan_mdb_remote_src_del(cfg->vxlan, &cfg->group, remote, ent);
+ hlist_for_each_entry_safe(ent, tmp, &remote->src_list, node) {
+ if (ent->flags & VXLAN_SGRP_F_NEW)
+ vxlan_mdb_remote_src_del(cfg->vxlan, &cfg->group, remote,
+ ent);
+ else
+ ent->flags &= ~VXLAN_SGRP_F_DELETE;
+ }
return err;
}
@@ -1069,7 +1080,7 @@ vxlan_mdb_remote_srcs_replace(const stru
err = vxlan_mdb_remote_srcs_add(cfg, remote, extack);
if (err)
- goto err_clear_delete;
+ return err;
hlist_for_each_entry_safe(ent, tmp, &remote->src_list, node) {
if (ent->flags & VXLAN_SGRP_F_DELETE)
@@ -1078,11 +1089,6 @@ vxlan_mdb_remote_srcs_replace(const stru
}
return 0;
-
-err_clear_delete:
- hlist_for_each_entry(ent, &remote->src_list, node)
- ent->flags &= ~VXLAN_SGRP_F_DELETE;
- return err;
}
static int vxlan_mdb_remote_replace(const struct vxlan_mdb_config *cfg,
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 569/675] watchdog: s32g_wdt: remove incorrect options in watchdog_info struct
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (567 preceding siblings ...)
2026-07-30 14:14 ` [PATCH 6.18 568/675] vxlan: mdb: Fix source list corruption on a failed replace Greg Kroah-Hartman
@ 2026-07-30 14:14 ` Greg Kroah-Hartman
2026-07-30 14:15 ` [PATCH 6.18 570/675] drm/amd/pm: fix amdgpu_pm_info power display units Greg Kroah-Hartman
` (110 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:14 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Ethan Nelson-Moore, Daniel Lezcano,
Guenter Roeck
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Ethan Nelson-Moore <enelsonmoore@gmail.com>
commit 2b37415618bfc6a83d4aceb00fd8d6491096f2ed upstream.
The s32g_wdt driver uses two incorrect constants in the options field
of its watchdog_info struct. This bit mask should contain WDIOF_*
constants, but the driver uses two WDIOC_* ioctl constants (in addition
to correct WDIOF_* constants). This causes many incorrect bits to be
set in the bit mask. The functionality indicated by these ioctl
constants is supported by all drivers using the watchdog framework, so
this patch simply removes them.
Fixes: bd3f54ec559b ("watchdog: Add the Watchdog Timer for the NXP S32 platform")
Cc: stable@vger.kernel.org # 6.18+
Signed-off-by: Ethan Nelson-Moore <enelsonmoore@gmail.com>
Acked-by: Daniel Lezcano <daniel.lezcano@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20260505024409.60301-1-enelsonmoore@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/watchdog/s32g_wdt.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/watchdog/s32g_wdt.c b/drivers/watchdog/s32g_wdt.c
index ad55063060af..6422a694fc65 100644
--- a/drivers/watchdog/s32g_wdt.c
+++ b/drivers/watchdog/s32g_wdt.c
@@ -56,8 +56,7 @@ MODULE_PARM_DESC(early_enable,
static const struct watchdog_info s32g_wdt_info = {
.identity = "s32g watchdog",
- .options = WDIOF_KEEPALIVEPING | WDIOF_SETTIMEOUT | WDIOF_MAGICCLOSE |
- WDIOC_GETTIMEOUT | WDIOC_GETTIMELEFT,
+ .options = WDIOF_KEEPALIVEPING | WDIOF_SETTIMEOUT | WDIOF_MAGICCLOSE,
};
static struct s32g_wdt_device *wdd_to_s32g_wdt(struct watchdog_device *wdd)
--
2.55.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 570/675] drm/amd/pm: fix amdgpu_pm_info power display units
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (568 preceding siblings ...)
2026-07-30 14:14 ` [PATCH 6.18 569/675] watchdog: s32g_wdt: remove incorrect options in watchdog_info struct Greg Kroah-Hartman
@ 2026-07-30 14:15 ` Greg Kroah-Hartman
2026-07-30 14:15 ` [PATCH 6.18 571/675] drm/amd/pm: make pp_features read-only when scpm is enabled Greg Kroah-Hartman
` (109 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:15 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Yang Wang, Asad Kamal, Alex Deucher
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Yang Wang <kevinyang.wang@amd.com>
commit 238baca26a6279e688d1a156bd031390b82eb578 upstream.
amdgpu_pm_info displayed power sensor readings with the wrong fractional unit.
It treated the low byte of the raw sensor value as the decimal part of watts,
while that field represents milliwatts in the decoded value. As a result,
debugfs could report misleading SoC power when the remainder was not already
a two-digit centiwatt value.
Example with query = 0x00000354:
raw field value
---------------------
query >> 8 3 W
query & 0xff 84 mW
decoded power 3084 mW
output value
---------------------
before 3.84 W
after 3.08 W
Fixes: f0b8f65b4825 ("drm/amd/amdgpu: fix the GPU power print error in pm info")
Signed-off-by: Yang Wang <kevinyang.wang@amd.com>
Reviewed-by: Asad Kamal <asad.kamal@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 01992b121fb652c753d37e0c1427a2d1a557d2b1)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/pm/amdgpu_pm.c | 21 ++++++++++++---------
1 file changed, 12 insertions(+), 9 deletions(-)
--- a/drivers/gpu/drm/amd/pm/amdgpu_pm.c
+++ b/drivers/gpu/drm/amd/pm/amdgpu_pm.c
@@ -40,6 +40,8 @@
#define DEVICE_ATTR_IS(_name) (attr_id == device_attr_id__##_name)
+#define power_2_mwatt(power) (((power) >> 8) * 1000 + ((power) & 0xff))
+
struct od_attribute {
struct kobj_attribute attribute;
struct list_head entry;
@@ -3261,7 +3263,6 @@ static int amdgpu_hwmon_get_power(struct
enum amd_pp_sensors sensor)
{
struct amdgpu_device *adev = dev_get_drvdata(dev);
- unsigned int uw;
u32 query = 0;
int r;
@@ -3270,9 +3271,7 @@ static int amdgpu_hwmon_get_power(struct
return r;
/* convert to microwatts */
- uw = (query >> 8) * 1000000 + (query & 0xff) * 1000;
-
- return uw;
+ return power_2_mwatt(query) * 1000;
}
static ssize_t amdgpu_hwmon_show_power_avg(struct device *dev,
@@ -4804,7 +4803,7 @@ static int amdgpu_debugfs_pm_info_pp(str
{
uint32_t mp1_ver = amdgpu_ip_version(adev, MP1_HWIP, 0);
uint32_t gc_ver = amdgpu_ip_version(adev, GC_HWIP, 0);
- uint32_t value;
+ uint32_t value, mwatt, centiwatt;
uint64_t value64 = 0;
uint32_t query = 0;
int size;
@@ -4829,17 +4828,21 @@ static int amdgpu_debugfs_pm_info_pp(str
seq_printf(m, "\t%u mV (VDDNB)\n", value);
size = sizeof(uint32_t);
if (!amdgpu_dpm_read_sensor(adev, AMDGPU_PP_SENSOR_GPU_AVG_POWER, (void *)&query, &size)) {
+ mwatt = power_2_mwatt(query);
+ centiwatt = DIV_ROUND_CLOSEST(mwatt, 10);
if (adev->flags & AMD_IS_APU)
- seq_printf(m, "\t%u.%02u W (average SoC including CPU)\n", query >> 8, query & 0xff);
+ seq_printf(m, "\t%u.%02u W (average SoC including CPU)\n", centiwatt / 100, centiwatt % 100);
else
- seq_printf(m, "\t%u.%02u W (average SoC)\n", query >> 8, query & 0xff);
+ seq_printf(m, "\t%u.%02u W (average SoC)\n", centiwatt / 100, centiwatt % 100);
}
size = sizeof(uint32_t);
if (!amdgpu_dpm_read_sensor(adev, AMDGPU_PP_SENSOR_GPU_INPUT_POWER, (void *)&query, &size)) {
+ mwatt = power_2_mwatt(query);
+ centiwatt = DIV_ROUND_CLOSEST(mwatt, 10);
if (adev->flags & AMD_IS_APU)
- seq_printf(m, "\t%u.%02u W (current SoC including CPU)\n", query >> 8, query & 0xff);
+ seq_printf(m, "\t%u.%02u W (current SoC including CPU)\n", centiwatt / 100, centiwatt % 100);
else
- seq_printf(m, "\t%u.%02u W (current SoC)\n", query >> 8, query & 0xff);
+ seq_printf(m, "\t%u.%02u W (current SoC)\n", centiwatt / 100, centiwatt % 100);
}
size = sizeof(value);
seq_printf(m, "\n");
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 571/675] drm/amd/pm: make pp_features read-only when scpm is enabled
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (569 preceding siblings ...)
2026-07-30 14:15 ` [PATCH 6.18 570/675] drm/amd/pm: fix amdgpu_pm_info power display units Greg Kroah-Hartman
@ 2026-07-30 14:15 ` Greg Kroah-Hartman
2026-07-30 14:15 ` [PATCH 6.18 572/675] drm/amdgpu/gfx10: replace BUG_ON() with WARN_ON() Greg Kroah-Hartman
` (108 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:15 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Yang Wang, Asad Kamal, Alex Deucher
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Yang Wang <kevinyang.wang@amd.com>
commit 53c78ab388bfc1a4d72e756815d0db0a842c812e upstream.
SCPM owns power feature control when enabled.
Make pp_features read-only during sysfs setup by clearing its write bits
and store callback.
Signed-off-by: Yang Wang <kevinyang.wang@amd.com>
Reviewed-by: Asad Kamal <asad.kamal@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 6a5786e191fdce36c5db170e5209cf609e8f0087)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/pm/amdgpu_pm.c | 5 +++++
1 file changed, 5 insertions(+)
--- a/drivers/gpu/drm/amd/pm/amdgpu_pm.c
+++ b/drivers/gpu/drm/amd/pm/amdgpu_pm.c
@@ -2619,6 +2619,11 @@ static int default_attr_update(struct am
gc_ver != IP_VERSION(9, 4, 3)) ||
gc_ver < IP_VERSION(9, 0, 0))
*states = ATTR_STATE_UNSUPPORTED;
+
+ if (adev->scpm_enabled) {
+ dev_attr->attr.mode &= ~S_IWUGO;
+ dev_attr->store = NULL;
+ }
} else if (DEVICE_ATTR_IS(gpu_metrics)) {
if (gc_ver < IP_VERSION(9, 1, 0))
*states = ATTR_STATE_UNSUPPORTED;
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 572/675] drm/amdgpu/gfx10: replace BUG_ON() with WARN_ON()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (570 preceding siblings ...)
2026-07-30 14:15 ` [PATCH 6.18 571/675] drm/amd/pm: make pp_features read-only when scpm is enabled Greg Kroah-Hartman
@ 2026-07-30 14:15 ` Greg Kroah-Hartman
2026-07-30 14:15 ` [PATCH 6.18 573/675] drm/amdgpu/gfx11: " Greg Kroah-Hartman
` (107 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:15 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Vitaly Prosyak, Alex Deucher
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Alex Deucher <alexander.deucher@amd.com>
commit d06c4173a7c38c7a39e98859f839ce714c7af2c9 upstream.
There's no need to crash the kernel for these cases.
Reviewed-by: Vitaly Prosyak <vitaly.prosyak@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit ac6f00beb658239bced4aaed9efbb04a35348d48)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c | 13 +++++--------
1 file changed, 5 insertions(+), 8 deletions(-)
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
@@ -4022,7 +4022,7 @@ static void gfx_v10_0_wait_reg_mem(struc
WAIT_REG_MEM_ENGINE(eng_sel)));
if (mem_space)
- BUG_ON(addr0 & 0x3); /* Dword align */
+ WARN_ON(addr0 & 0x3); /* Dword align */
amdgpu_ring_write(ring, addr0);
amdgpu_ring_write(ring, addr1);
amdgpu_ring_write(ring, ref);
@@ -8674,7 +8674,7 @@ static void gfx_v10_0_ring_emit_ib_gfx(s
}
amdgpu_ring_write(ring, header);
- BUG_ON(ib->gpu_addr & 0x3); /* Dword align */
+ WARN_ON(ib->gpu_addr & 0x3); /* Dword align */
amdgpu_ring_write(ring,
#ifdef __BIG_ENDIAN
(2 << 0) |
@@ -8709,7 +8709,7 @@ static void gfx_v10_0_ring_emit_ib_compu
}
amdgpu_ring_write(ring, PACKET3(PACKET3_INDIRECT_BUFFER, 2));
- BUG_ON(ib->gpu_addr & 0x3); /* Dword align */
+ WARN_ON(ib->gpu_addr & 0x3); /* Dword align */
amdgpu_ring_write(ring,
#ifdef __BIG_ENDIAN
(2 << 0) |
@@ -8742,9 +8742,9 @@ static void gfx_v10_0_ring_emit_fence(st
* aligned if only send 32bit data low (discard data high)
*/
if (write64bit)
- BUG_ON(addr & 0x7);
+ WARN_ON(addr & 0x7);
else
- BUG_ON(addr & 0x3);
+ WARN_ON(addr & 0x3);
amdgpu_ring_write(ring, lower_32_bits(addr));
amdgpu_ring_write(ring, upper_32_bits(addr));
amdgpu_ring_write(ring, lower_32_bits(seq));
@@ -8792,9 +8792,6 @@ static void gfx_v10_0_ring_emit_fence_ki
{
struct amdgpu_device *adev = ring->adev;
- /* we only allocate 32bit for each seq wb address */
- BUG_ON(flags & AMDGPU_FENCE_FLAG_64BIT);
-
/* write fence seq to the "addr" */
amdgpu_ring_write(ring, PACKET3(PACKET3_WRITE_DATA, 3));
amdgpu_ring_write(ring, (WRITE_DATA_ENGINE_SEL(0) |
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 573/675] drm/amdgpu/gfx11: replace BUG_ON() with WARN_ON()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (571 preceding siblings ...)
2026-07-30 14:15 ` [PATCH 6.18 572/675] drm/amdgpu/gfx10: replace BUG_ON() with WARN_ON() Greg Kroah-Hartman
@ 2026-07-30 14:15 ` Greg Kroah-Hartman
2026-07-30 14:15 ` [PATCH 6.18 574/675] drm/amdgpu/gfx12: " Greg Kroah-Hartman
` (106 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:15 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Vitaly Prosyak, Alex Deucher
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Alex Deucher <alexander.deucher@amd.com>
commit 0eebcab1ea2a77f086a04108f386f82ee3496022 upstream.
There's no need to crash the kernel for these cases.
Reviewed-by: Vitaly Prosyak <vitaly.prosyak@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit daa62107452d2451787c4248ca38fa2d1a0cbefd)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c | 13 +++++--------
1 file changed, 5 insertions(+), 8 deletions(-)
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c
@@ -537,7 +537,7 @@ static void gfx_v11_0_wait_reg_mem(struc
WAIT_REG_MEM_ENGINE(eng_sel)));
if (mem_space)
- BUG_ON(addr0 & 0x3); /* Dword align */
+ WARN_ON(addr0 & 0x3); /* Dword align */
amdgpu_ring_write(ring, addr0);
amdgpu_ring_write(ring, addr1);
amdgpu_ring_write(ring, ref);
@@ -5901,7 +5901,7 @@ static void gfx_v11_0_ring_emit_ib_gfx(s
}
amdgpu_ring_write(ring, header);
- BUG_ON(ib->gpu_addr & 0x3); /* Dword align */
+ WARN_ON(ib->gpu_addr & 0x3); /* Dword align */
amdgpu_ring_write(ring,
#ifdef __BIG_ENDIAN
(2 << 0) |
@@ -5936,7 +5936,7 @@ static void gfx_v11_0_ring_emit_ib_compu
}
amdgpu_ring_write(ring, PACKET3(PACKET3_INDIRECT_BUFFER, 2));
- BUG_ON(ib->gpu_addr & 0x3); /* Dword align */
+ WARN_ON(ib->gpu_addr & 0x3); /* Dword align */
amdgpu_ring_write(ring,
#ifdef __BIG_ENDIAN
(2 << 0) |
@@ -5969,9 +5969,9 @@ static void gfx_v11_0_ring_emit_fence(st
* aligned if only send 32bit data low (discard data high)
*/
if (write64bit)
- BUG_ON(addr & 0x7);
+ WARN_ON(addr & 0x7);
else
- BUG_ON(addr & 0x3);
+ WARN_ON(addr & 0x3);
amdgpu_ring_write(ring, lower_32_bits(addr));
amdgpu_ring_write(ring, upper_32_bits(addr));
amdgpu_ring_write(ring, lower_32_bits(seq));
@@ -6025,9 +6025,6 @@ static void gfx_v11_0_ring_emit_fence_ki
{
struct amdgpu_device *adev = ring->adev;
- /* we only allocate 32bit for each seq wb address */
- BUG_ON(flags & AMDGPU_FENCE_FLAG_64BIT);
-
/* write fence seq to the "addr" */
amdgpu_ring_write(ring, PACKET3(PACKET3_WRITE_DATA, 3));
amdgpu_ring_write(ring, (WRITE_DATA_ENGINE_SEL(0) |
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 574/675] drm/amdgpu/gfx12: replace BUG_ON() with WARN_ON()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (572 preceding siblings ...)
2026-07-30 14:15 ` [PATCH 6.18 573/675] drm/amdgpu/gfx11: " Greg Kroah-Hartman
@ 2026-07-30 14:15 ` Greg Kroah-Hartman
2026-07-30 14:15 ` [PATCH 6.18 575/675] drm/amdgpu/gfx8: drop unecessary BUG_ON() Greg Kroah-Hartman
` (105 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:15 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Vitaly Prosyak, Alex Deucher
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Alex Deucher <alexander.deucher@amd.com>
commit cd3b3efa1ced05528d9128755338baa62a6b562d upstream.
There's no need to crash the kernel for these cases.
Reviewed-by: Vitaly Prosyak <vitaly.prosyak@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit f952076f76d62f783e8ba4995a7c400d39354ccf)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/amdgpu/gfx_v12_0.c | 13 +++++--------
1 file changed, 5 insertions(+), 8 deletions(-)
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v12_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v12_0.c
@@ -439,7 +439,7 @@ static void gfx_v12_0_wait_reg_mem(struc
WAIT_REG_MEM_ENGINE(eng_sel)));
if (mem_space)
- BUG_ON(addr0 & 0x3); /* Dword align */
+ WARN_ON(addr0 & 0x3); /* Dword align */
amdgpu_ring_write(ring, addr0);
amdgpu_ring_write(ring, addr1);
amdgpu_ring_write(ring, ref);
@@ -4424,7 +4424,7 @@ static void gfx_v12_0_ring_emit_ib_gfx(s
control |= ib->length_dw | (vmid << 24);
amdgpu_ring_write(ring, header);
- BUG_ON(ib->gpu_addr & 0x3); /* Dword align */
+ WARN_ON(ib->gpu_addr & 0x3); /* Dword align */
amdgpu_ring_write(ring,
#ifdef __BIG_ENDIAN
(2 << 0) |
@@ -4443,7 +4443,7 @@ static void gfx_v12_0_ring_emit_ib_compu
u32 control = INDIRECT_BUFFER_VALID | ib->length_dw | (vmid << 24);
amdgpu_ring_write(ring, PACKET3(PACKET3_INDIRECT_BUFFER, 2));
- BUG_ON(ib->gpu_addr & 0x3); /* Dword align */
+ WARN_ON(ib->gpu_addr & 0x3); /* Dword align */
amdgpu_ring_write(ring,
#ifdef __BIG_ENDIAN
(2 << 0) |
@@ -4474,9 +4474,9 @@ static void gfx_v12_0_ring_emit_fence(st
* aligned if only send 32bit data low (discard data high)
*/
if (write64bit)
- BUG_ON(addr & 0x7);
+ WARN_ON(addr & 0x7);
else
- BUG_ON(addr & 0x3);
+ WARN_ON(addr & 0x3);
amdgpu_ring_write(ring, lower_32_bits(addr));
amdgpu_ring_write(ring, upper_32_bits(addr));
amdgpu_ring_write(ring, lower_32_bits(seq));
@@ -4524,9 +4524,6 @@ static void gfx_v12_0_ring_emit_fence_ki
{
struct amdgpu_device *adev = ring->adev;
- /* we only allocate 32bit for each seq wb address */
- BUG_ON(flags & AMDGPU_FENCE_FLAG_64BIT);
-
/* write fence seq to the "addr" */
amdgpu_ring_write(ring, PACKET3(PACKET3_WRITE_DATA, 3));
amdgpu_ring_write(ring, (WRITE_DATA_ENGINE_SEL(0) |
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 575/675] drm/amdgpu/gfx8: drop unecessary BUG_ON()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (573 preceding siblings ...)
2026-07-30 14:15 ` [PATCH 6.18 574/675] drm/amdgpu/gfx12: " Greg Kroah-Hartman
@ 2026-07-30 14:15 ` Greg Kroah-Hartman
2026-07-30 14:15 ` [PATCH 6.18 576/675] drm/amdgpu/gfx9.4.3: replace BUG_ON() with WARN_ON() Greg Kroah-Hartman
` (104 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:15 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Vitaly Prosyak, Alex Deucher
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Alex Deucher <alexander.deucher@amd.com>
commit 84a1a8a952ab4b8c23c5dd1f2eea4049cb4914f5 upstream.
There's no need to crash the kernel for this case.
Reviewed-by: Vitaly Prosyak <vitaly.prosyak@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 4d7c25208ca612b754f3bf39e9f16e725b828891)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c | 3 ---
1 file changed, 3 deletions(-)
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
@@ -6226,9 +6226,6 @@ static void gfx_v8_0_ring_emit_fence_com
static void gfx_v8_0_ring_emit_fence_kiq(struct amdgpu_ring *ring, u64 addr,
u64 seq, unsigned int flags)
{
- /* we only allocate 32bit for each seq wb address */
- BUG_ON(flags & AMDGPU_FENCE_FLAG_64BIT);
-
/* write fence seq to the "addr" */
amdgpu_ring_write(ring, PACKET3(PACKET3_WRITE_DATA, 3));
amdgpu_ring_write(ring, (WRITE_DATA_ENGINE_SEL(0) |
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 576/675] drm/amdgpu/gfx9.4.3: replace BUG_ON() with WARN_ON()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (574 preceding siblings ...)
2026-07-30 14:15 ` [PATCH 6.18 575/675] drm/amdgpu/gfx8: drop unecessary BUG_ON() Greg Kroah-Hartman
@ 2026-07-30 14:15 ` Greg Kroah-Hartman
2026-07-30 14:15 ` [PATCH 6.18 577/675] drm/amdgpu/gfx9: " Greg Kroah-Hartman
` (103 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:15 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Vitaly Prosyak, Alex Deucher
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Alex Deucher <alexander.deucher@amd.com>
commit 00f4050f7c367d7bdce347ca279ce467c434cf15 upstream.
There's no need to crash the kernel for these cases.
Reviewed-by: Vitaly Prosyak <vitaly.prosyak@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 5676593d08998d7a6d9e2d51d6b54b3820e3755c)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/amdgpu/gfx_v9_4_3.c | 11 ++++-------
1 file changed, 4 insertions(+), 7 deletions(-)
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v9_4_3.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v9_4_3.c
@@ -405,7 +405,7 @@ static void gfx_v9_4_3_wait_reg_mem(stru
WAIT_REG_MEM_ENGINE(eng_sel)));
if (mem_space)
- BUG_ON(addr0 & 0x3); /* Dword align */
+ WARN_ON(addr0 & 0x3); /* Dword align */
amdgpu_ring_write(ring, addr0);
amdgpu_ring_write(ring, addr1);
amdgpu_ring_write(ring, ref);
@@ -2871,7 +2871,7 @@ static void gfx_v9_4_3_ring_emit_ib_comp
}
amdgpu_ring_write(ring, PACKET3(PACKET3_INDIRECT_BUFFER, 2));
- BUG_ON(ib->gpu_addr & 0x3); /* Dword align */
+ WARN_ON(ib->gpu_addr & 0x3); /* Dword align */
amdgpu_ring_write(ring,
#ifdef __BIG_ENDIAN
(2 << 0) |
@@ -2905,9 +2905,9 @@ static void gfx_v9_4_3_ring_emit_fence(s
* aligned if only send 32bit data low (discard data high)
*/
if (write64bit)
- BUG_ON(addr & 0x7);
+ WARN_ON(addr & 0x7);
else
- BUG_ON(addr & 0x3);
+ WARN_ON(addr & 0x3);
amdgpu_ring_write(ring, lower_32_bits(addr));
amdgpu_ring_write(ring, upper_32_bits(addr));
amdgpu_ring_write(ring, lower_32_bits(seq));
@@ -2967,9 +2967,6 @@ static void gfx_v9_4_3_ring_emit_fence_k
{
struct amdgpu_device *adev = ring->adev;
- /* we only allocate 32bit for each seq wb address */
- BUG_ON(flags & AMDGPU_FENCE_FLAG_64BIT);
-
/* write fence seq to the "addr" */
amdgpu_ring_write(ring, PACKET3(PACKET3_WRITE_DATA, 3));
amdgpu_ring_write(ring, (WRITE_DATA_ENGINE_SEL(0) |
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 577/675] drm/amdgpu/gfx9: replace BUG_ON() with WARN_ON()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (575 preceding siblings ...)
2026-07-30 14:15 ` [PATCH 6.18 576/675] drm/amdgpu/gfx9.4.3: replace BUG_ON() with WARN_ON() Greg Kroah-Hartman
@ 2026-07-30 14:15 ` Greg Kroah-Hartman
2026-07-30 14:15 ` [PATCH 6.18 578/675] drm/amdgpu/jpeg: fix jpeg_v4_0_3_is_idle detection Greg Kroah-Hartman
` (102 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:15 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Vitaly Prosyak, Alex Deucher
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Alex Deucher <alexander.deucher@amd.com>
commit 6302be10b521f5106ce01eb5a724b9e7945a5061 upstream.
There's no need to crash the kernel for these cases.
Reviewed-by: Vitaly Prosyak <vitaly.prosyak@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit b71604f8685b0eba07866f4e8dc30f93e1931054)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
@@ -1183,7 +1183,7 @@ static void gfx_v9_0_wait_reg_mem(struct
WAIT_REG_MEM_ENGINE(eng_sel)));
if (mem_space)
- BUG_ON(addr0 & 0x3); /* Dword align */
+ WARN_ON(addr0 & 0x3); /* Dword align */
amdgpu_ring_write(ring, addr0);
amdgpu_ring_write(ring, addr1);
amdgpu_ring_write(ring, ref);
@@ -5473,7 +5473,7 @@ static void gfx_v9_0_ring_emit_ib_gfx(st
}
amdgpu_ring_write(ring, header);
- BUG_ON(ib->gpu_addr & 0x3); /* Dword align */
+ WARN_ON(ib->gpu_addr & 0x3); /* Dword align */
amdgpu_ring_write(ring,
#ifdef __BIG_ENDIAN
(2 << 0) |
@@ -5569,7 +5569,7 @@ static void gfx_v9_0_ring_emit_ib_comput
}
amdgpu_ring_write(ring, PACKET3(PACKET3_INDIRECT_BUFFER, 2));
- BUG_ON(ib->gpu_addr & 0x3); /* Dword align */
+ WARN_ON(ib->gpu_addr & 0x3); /* Dword align */
amdgpu_ring_write(ring,
#ifdef __BIG_ENDIAN
(2 << 0) |
@@ -5610,9 +5610,9 @@ static void gfx_v9_0_ring_emit_fence(str
* aligned if only send 32bit data low (discard data high)
*/
if (write64bit)
- BUG_ON(addr & 0x7);
+ WARN_ON(addr & 0x7);
else
- BUG_ON(addr & 0x3);
+ WARN_ON(addr & 0x3);
amdgpu_ring_write(ring, lower_32_bits(addr));
amdgpu_ring_write(ring, upper_32_bits(addr));
amdgpu_ring_write(ring, lower_32_bits(seq));
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 578/675] drm/amdgpu/jpeg: fix jpeg_v4_0_3_is_idle detection
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (576 preceding siblings ...)
2026-07-30 14:15 ` [PATCH 6.18 577/675] drm/amdgpu/gfx9: " Greg Kroah-Hartman
@ 2026-07-30 14:15 ` Greg Kroah-Hartman
2026-07-30 14:15 ` [PATCH 6.18 579/675] drm/amdgpu/jpeg: fix jpeg_v5_0_1_is_idle detection Greg Kroah-Hartman
` (101 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:15 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Boyuan Zhang, Alex Deucher
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Boyuan Zhang <boyuan.zhang@amd.com>
commit c44af3810fc8b3adf6910a332038aa566560c8fa upstream.
jpeg_v4_0_3_is_idle() initializes ret to false and then accumulates ring
idle status using &=. Since false & condition always remains false, the
function can never report the JPEG block as idle.
Initialize ret to true so the function returns true only when all JPEG
rings report RB_JOB_DONE.
Signed-off-by: Boyuan Zhang <boyuan.zhang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit e9df8e9d04e0593d17ddb069f3b7958991cd18c9)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/amdgpu/jpeg_v4_0_3.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/gpu/drm/amd/amdgpu/jpeg_v4_0_3.c
+++ b/drivers/gpu/drm/amd/amdgpu/jpeg_v4_0_3.c
@@ -1010,7 +1010,7 @@ void jpeg_v4_0_3_dec_ring_nop(struct amd
static bool jpeg_v4_0_3_is_idle(struct amdgpu_ip_block *ip_block)
{
struct amdgpu_device *adev = ip_block->adev;
- bool ret = false;
+ bool ret = true;
int i, j;
for (i = 0; i < adev->jpeg.num_jpeg_inst; ++i) {
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 579/675] drm/amdgpu/jpeg: fix jpeg_v5_0_1_is_idle detection
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (577 preceding siblings ...)
2026-07-30 14:15 ` [PATCH 6.18 578/675] drm/amdgpu/jpeg: fix jpeg_v4_0_3_is_idle detection Greg Kroah-Hartman
@ 2026-07-30 14:15 ` Greg Kroah-Hartman
2026-07-30 14:15 ` [PATCH 6.18 580/675] drm/amdgpu/sdma4.4.2: replace BUG_ON() with WARN_ON() Greg Kroah-Hartman
` (100 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:15 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Boyuan Zhang, David (Ming Qiang) Wu,
Alex Deucher
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Boyuan Zhang <boyuan.zhang@amd.com>
commit efcedeececcf995fcf717b21e39aa7c446fa3bf7 upstream.
jpeg_v5_0_1_is_idle() initializes ret to false and then accumulates ring
idle status using &=. Since false & condition always remains false, the
function can never report the JPEG block as idle.
Initialize ret to true so the function returns true only when all JPEG
rings report RB_JOB_DONE.
Signed-off-by: Boyuan Zhang <boyuan.zhang@amd.com>
Reviewed-by: David (Ming Qiang) Wu <David.Wu3@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 680adf5faeeabb4585f7aeb53681719e2d6c2f41)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/amdgpu/jpeg_v5_0_1.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/gpu/drm/amd/amdgpu/jpeg_v5_0_1.c
+++ b/drivers/gpu/drm/amd/amdgpu/jpeg_v5_0_1.c
@@ -657,7 +657,7 @@ static void jpeg_v5_0_1_dec_ring_set_wpt
static bool jpeg_v5_0_1_is_idle(struct amdgpu_ip_block *ip_block)
{
struct amdgpu_device *adev = ip_block->adev;
- bool ret = false;
+ bool ret = true;
int i, j;
for (i = 0; i < adev->jpeg.num_jpeg_inst; ++i) {
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 580/675] drm/amdgpu/sdma4.4.2: replace BUG_ON() with WARN_ON()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (578 preceding siblings ...)
2026-07-30 14:15 ` [PATCH 6.18 579/675] drm/amdgpu/jpeg: fix jpeg_v5_0_1_is_idle detection Greg Kroah-Hartman
@ 2026-07-30 14:15 ` Greg Kroah-Hartman
2026-07-30 14:15 ` [PATCH 6.18 581/675] drm/amdgpu/soc24: reset dGPU if suspend got aborted Greg Kroah-Hartman
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From: Greg Kroah-Hartman @ 2026-07-30 14:15 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Vitaly Prosyak, Alex Deucher
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Alex Deucher <alexander.deucher@amd.com>
commit 40cdbe9fa424cc6264a7aed93a04bd7d69109d9e upstream.
There's no need to crash the kernel for these cases.
Reviewed-by: Vitaly Prosyak <vitaly.prosyak@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit fa4f86a148271e325e95287630a3a15a9cd35fdc)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/amdgpu/sdma_v4_4_2.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/gpu/drm/amd/amdgpu/sdma_v4_4_2.c
+++ b/drivers/gpu/drm/amd/amdgpu/sdma_v4_4_2.c
@@ -458,7 +458,7 @@ static void sdma_v4_4_2_ring_emit_fence(
/* write the fence */
amdgpu_ring_write(ring, SDMA_PKT_HEADER_OP(SDMA_OP_FENCE));
/* zero in first two bits */
- BUG_ON(addr & 0x3);
+ WARN_ON(addr & 0x3);
amdgpu_ring_write(ring, lower_32_bits(addr));
amdgpu_ring_write(ring, upper_32_bits(addr));
amdgpu_ring_write(ring, lower_32_bits(seq));
@@ -468,7 +468,7 @@ static void sdma_v4_4_2_ring_emit_fence(
addr += 4;
amdgpu_ring_write(ring, SDMA_PKT_HEADER_OP(SDMA_OP_FENCE));
/* zero in first two bits */
- BUG_ON(addr & 0x3);
+ WARN_ON(addr & 0x3);
amdgpu_ring_write(ring, lower_32_bits(addr));
amdgpu_ring_write(ring, upper_32_bits(addr));
amdgpu_ring_write(ring, upper_32_bits(seq));
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 581/675] drm/amdgpu/soc24: reset dGPU if suspend got aborted
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (579 preceding siblings ...)
2026-07-30 14:15 ` [PATCH 6.18 580/675] drm/amdgpu/sdma4.4.2: replace BUG_ON() with WARN_ON() Greg Kroah-Hartman
@ 2026-07-30 14:15 ` Greg Kroah-Hartman
2026-07-30 14:15 ` [PATCH 6.18 582/675] drm/amdgpu/vce: fix integer overflow in image size Greg Kroah-Hartman
` (98 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:15 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Jakob Linke, Alex Deucher
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jakob Linke <jakob@linke.cx>
commit aff079bdce65f6d085e4b0091fdf87fffa95b0d9 upstream.
For SOC24 ASICs (RDNA4 / Navi 4x dGPUs) re-enabling PM features fails if an
S3 suspend got aborted, the same issue already handled for SOC21 and SOC15:
commit df3c7dc5c58b ("drm/amdgpu: Reset dGPU if suspend got aborted")
commit 38e8ca3e4b6d ("amdgpu/soc15: enable asic reset for dGPU in case of suspend abort")
The aborted resume fails with:
amdgpu: SMU: No response msg_reg: 6 resp_reg: 0
amdgpu: Failed to enable requested dpm features!
amdgpu: resume of IP block <smu> failed -62
Apply the same workaround for soc24: detect the aborted-suspend state at
resume via the sign-of-life register and reset the device before re-init.
This is a workaround till a proper solution is finalized.
Fixes: 98b912c50e44 ("drm/amdgpu: Add soc24 common ip block (v2)")
Signed-off-by: Jakob Linke <jakob@linke.cx>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit fed5bdbfe1d4a19a26c70f7fc58017dc88be1c18)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/amdgpu/soc24.c | 28 ++++++++++++++++++++++++++++
1 file changed, 28 insertions(+)
--- a/drivers/gpu/drm/amd/amdgpu/soc24.c
+++ b/drivers/gpu/drm/amd/amdgpu/soc24.c
@@ -526,8 +526,36 @@ static int soc24_common_suspend(struct a
return soc24_common_hw_fini(ip_block);
}
+static bool soc24_need_reset_on_resume(struct amdgpu_device *adev)
+{
+ u32 sol_reg1, sol_reg2;
+
+ /* Will reset for the following suspend abort cases.
+ * 1) Only reset dGPU side.
+ * 2) S3 suspend got aborted and TOS is active.
+ * As for dGPU suspend abort cases the SOL value
+ * will be kept as zero at this resume point.
+ */
+ if (!(adev->flags & AMD_IS_APU) && adev->in_s3) {
+ sol_reg1 = RREG32_SOC15(MP0, 0, regMPASP_SMN_C2PMSG_81);
+ msleep(100);
+ sol_reg2 = RREG32_SOC15(MP0, 0, regMPASP_SMN_C2PMSG_81);
+
+ return (sol_reg1 != sol_reg2);
+ }
+
+ return false;
+}
+
static int soc24_common_resume(struct amdgpu_ip_block *ip_block)
{
+ struct amdgpu_device *adev = ip_block->adev;
+
+ if (soc24_need_reset_on_resume(adev)) {
+ dev_info(adev->dev, "S3 suspend aborted, resetting...");
+ soc24_asic_reset(adev);
+ }
+
return soc24_common_hw_init(ip_block);
}
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 582/675] drm/amdgpu/vce: fix integer overflow in image size
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (580 preceding siblings ...)
2026-07-30 14:15 ` [PATCH 6.18 581/675] drm/amdgpu/soc24: reset dGPU if suspend got aborted Greg Kroah-Hartman
@ 2026-07-30 14:15 ` Greg Kroah-Hartman
2026-07-30 14:15 ` [PATCH 6.18 583/675] drm/amdgpu/vcn4: avoid rereading IB param length Greg Kroah-Hartman
` (97 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:15 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Boyuan Zhang, Alex Deucher
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Boyuan Zhang <boyuan.zhang@amd.com>
commit 186bfdc4e26d019b2e7570cb121964a1d89b2e5b upstream.
Fix a security vulnerability where malicious VCE command streams
with oversized dimensions (e.g. 65536×65536) cause 32-bit integer
overflow, wrapping the calculated buffer size to 0. This bypasses
validation and allows GPU firmware to perform out-of-bound memory
access.
The fix uses 64-bit arithmetic to detect overflow and rejects
invalid dimensions before they reach the hardware.
V2: remove redundant check
V3: modify max height value
V4: remove size64
Signed-off-by: Boyuan Zhang <boyuan.zhang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit cbe408dba581755ad1279a487ec786d8927d778d)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_vce.c | 17 ++++++++++++++---
1 file changed, 14 insertions(+), 3 deletions(-)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vce.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vce.c
@@ -853,9 +853,20 @@ int amdgpu_vce_ring_parse_cs(struct amdg
goto out;
}
- *size = amdgpu_ib_get_value(ib, idx + 8) *
- amdgpu_ib_get_value(ib, idx + 10) *
- 8 * 3 / 2;
+ uint32_t width, height;
+ width = amdgpu_ib_get_value(ib, idx + 8);
+ height = amdgpu_ib_get_value(ib, idx + 10);
+
+ if (width == 0 || height == 0 ||
+ width > 4096 || height > 2304) {
+ DRM_ERROR("invalid VCE image size: %ux%u\n",
+ width, height);
+ r = -EINVAL;
+ goto out;
+ }
+
+ *size = width * height * 8 * 3 / 2;
+
break;
case 0x04000001: /* config extension */
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 583/675] drm/amdgpu/vcn4: avoid rereading IB param length
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (581 preceding siblings ...)
2026-07-30 14:15 ` [PATCH 6.18 582/675] drm/amdgpu/vce: fix integer overflow in image size Greg Kroah-Hartman
@ 2026-07-30 14:15 ` Greg Kroah-Hartman
2026-07-30 14:15 ` [PATCH 6.18 584/675] drm/dp_mst: Handle torn-down topology gracefully in drm_dp_mst_topology_queue_probe() Greg Kroah-Hartman
` (96 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:15 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Boyuan Zhang, David Rosca,
Alex Deucher
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Boyuan Zhang <boyuan.zhang@amd.com>
commit 3b4082fabc67c9780b06eb959e59dd92fa79c0f0 upstream.
Reuse the parameter length returned by
vcn_v4_0_enc_find_ib_param() instead of rereading it from
the IB.
This avoids a potential TOCTOU issue if the IB contents
change between reads.
Signed-off-by: Boyuan Zhang <boyuan.zhang@amd.com>
Reviewed-by: David Rosca <david.rosca@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit dbb02b4755f8c1f3773263f2d779872c1c0c073a)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/amdgpu/vcn_v4_0.c | 15 +++++++++------
1 file changed, 9 insertions(+), 6 deletions(-)
--- a/drivers/gpu/drm/amd/amdgpu/vcn_v4_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/vcn_v4_0.c
@@ -1926,14 +1926,17 @@ out:
#define RENCODE_IB_PARAM_SESSION_INIT 0x00000003
/* return the offset in ib if id is found, -1 otherwise */
-static int vcn_v4_0_enc_find_ib_param(struct amdgpu_ib *ib, uint32_t id, int start)
+static int vcn_v4_0_enc_find_ib_param(struct amdgpu_ib *ib, uint32_t id, int start, uint32_t *length)
{
int i;
uint32_t len;
for (i = start; (len = amdgpu_ib_get_value(ib, i)) >= 8; i += len / 4) {
- if (amdgpu_ib_get_value(ib, i + 1) == id)
+ if (amdgpu_ib_get_value(ib, i + 1) == id) {
+ if (length)
+ *length = len;
return i;
+ }
}
return -1;
}
@@ -1943,14 +1946,14 @@ static int vcn_v4_0_ring_patch_cs_in_pla
struct amdgpu_ib *ib)
{
struct amdgpu_ring *ring = amdgpu_job_ring(job);
- uint32_t val;
+ uint32_t val, len;
int idx = 0, sidx;
/* The first instance can decode anything */
if (!ring->me)
return 0;
- while ((idx = vcn_v4_0_enc_find_ib_param(ib, RADEON_VCN_ENGINE_INFO, idx)) >= 0) {
+ while ((idx = vcn_v4_0_enc_find_ib_param(ib, RADEON_VCN_ENGINE_INFO, idx, &len)) >= 0) {
val = amdgpu_ib_get_value(ib, idx + 2); /* RADEON_VCN_ENGINE_TYPE */
if (val == RADEON_VCN_ENGINE_TYPE_DECODE) {
uint32_t valid_buf_flag = amdgpu_ib_get_value(ib, idx + 6);
@@ -1963,12 +1966,12 @@ static int vcn_v4_0_ring_patch_cs_in_pla
amdgpu_ib_get_value(ib, idx + 8);
return vcn_v4_0_dec_msg(p, job, msg_buffer_addr);
} else if (val == RADEON_VCN_ENGINE_TYPE_ENCODE) {
- sidx = vcn_v4_0_enc_find_ib_param(ib, RENCODE_IB_PARAM_SESSION_INIT, idx);
+ sidx = vcn_v4_0_enc_find_ib_param(ib, RENCODE_IB_PARAM_SESSION_INIT, idx, NULL);
if (sidx >= 0 &&
amdgpu_ib_get_value(ib, sidx + 2) == RENCODE_ENCODE_STANDARD_AV1)
return vcn_v4_0_limit_sched(p, job);
}
- idx += amdgpu_ib_get_value(ib, idx) / 4;
+ idx += len / 4;
}
return 0;
}
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 584/675] drm/dp_mst: Handle torn-down topology gracefully in drm_dp_mst_topology_queue_probe()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (582 preceding siblings ...)
2026-07-30 14:15 ` [PATCH 6.18 583/675] drm/amdgpu/vcn4: avoid rereading IB param length Greg Kroah-Hartman
@ 2026-07-30 14:15 ` Greg Kroah-Hartman
2026-07-30 14:15 ` [PATCH 6.18 585/675] drm/amdgpu: fix division by zero with invalid uvd dimensions Greg Kroah-Hartman
` (95 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:15 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Imre Deak, Lyude Paul, intel-gfx,
dri-devel, Jonas Emilsson, Luca Coelho, Maarten Lankhorst
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Luca Coelho <luciano.coelho@intel.com>
commit 613059875958e7b217b250ed14c3b189f9488421 upstream.
A hotplug or link-loss event can tear down the MST topology
(setting mgr->mst_state = false and mgr->mst_primary = NULL) concurrently
with a caller invoking drm_dp_mst_topology_queue_probe(). Since the check
is already performed under mgr->lock, the condition is not a programming
error but a valid race -- the topology was valid when the caller decided
to call this function, but was torn down before the lock was acquired.
Replace the drm_WARN_ON() with a graceful early return. This eliminates
spurious kernel warnings and the resulting compositor crashes observed
when connecting/disconnecting DP MST monitors, while keeping the correct
behavior of doing nothing when MST is not active. A drm_dbg_mst() trace
is added so the skipped probe remains observable under MST debug logging.
The existing WARN_ON(mgr->mst_primary) in drm_dp_mst_topology_mgr_set_mst()
already catches the case where the topology is initialized twice, so no
diagnostic coverage is lost.
Fixes: dbaeef363ea5 ("drm/dp_mst: Add a helper to queue a topology probe")
Cc: Imre Deak <imre.deak@intel.com>
Cc: Lyude Paul <lyude@redhat.com>
Cc: stable@vger.kernel.org
Cc: intel-gfx@lists.freedesktop.org
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Jonas Emilsson <jonas.emilsson@gmail.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/all/20260503034533.1023686-1-jonas.emilsson@gmail.com
Acked-by: Imre Deak <imre.deak@intel.com>
Link: https://patch.msgid.link/20260622140532.526722-1-luciano.coelho@intel.com
Signed-off-by: Maarten Lankhorst <dev@lankhorst.se>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/display/drm_dp_mst_topology.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--- a/drivers/gpu/drm/display/drm_dp_mst_topology.c
+++ b/drivers/gpu/drm/display/drm_dp_mst_topology.c
@@ -3740,8 +3740,10 @@ void drm_dp_mst_topology_queue_probe(str
{
mutex_lock(&mgr->lock);
- if (drm_WARN_ON(mgr->dev, !mgr->mst_state || !mgr->mst_primary))
+ if (!mgr->mst_state || !mgr->mst_primary) {
+ drm_dbg_kms(mgr->dev, "queue_probe skipped: topology torn down\n");
goto out_unlock;
+ }
drm_dp_mst_topology_mgr_invalidate_mstb(mgr->mst_primary);
drm_dp_mst_queue_probe_work(mgr);
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 585/675] drm/amdgpu: fix division by zero with invalid uvd dimensions
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (583 preceding siblings ...)
2026-07-30 14:15 ` [PATCH 6.18 584/675] drm/dp_mst: Handle torn-down topology gracefully in drm_dp_mst_topology_queue_probe() Greg Kroah-Hartman
@ 2026-07-30 14:15 ` Greg Kroah-Hartman
2026-07-30 14:15 ` [PATCH 6.18 586/675] drm/amdgpu: fix resource leak on ACP reset timeout Greg Kroah-Hartman
` (94 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:15 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Boyuan Zhang, Leo Liu, Alex Deucher
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Boyuan Zhang <boyuan.zhang@amd.com>
commit 0c01c811be47e6b146552dd59bfedbea8f09b8f4 upstream.
When width or height is less than 16, width_in_mb or height_in_mb
becomes 0, leading to fs_in_mb being 0. This causes a division by
zero when calculating num_dpb_buffer in H264 and H264 Perf decode
paths.
Add validation to reject frames with width < 16 or height < 16
before performing any calculations that depend on these values.
V2: Format change - move up all vaiable definitions.
V3: Use warn_once to avoid spam.
Signed-off-by: Boyuan Zhang <boyuan.zhang@amd.com>
Reviewed-by: Leo Liu <leo.liu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 3e41d26c70b0a459d041cc19482a226c4b7423cb)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c | 8 ++++++++
1 file changed, 8 insertions(+)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c
@@ -654,6 +654,14 @@ static int amdgpu_uvd_cs_msg_decode(stru
unsigned int image_size, tmp, min_dpb_size, num_dpb_buffer;
unsigned int min_ctx_size = ~0;
+ /* Reject invalid dimensions to prevent division by zero */
+ if (width < 16 || height < 16) {
+ dev_WARN_ONCE(adev->dev, 1,
+ "Invalid UVD decoding dimensions (%dx%d)!\n",
+ width, height);
+ return -EINVAL;
+ }
+
image_size = width * height;
image_size += image_size / 2;
image_size = ALIGN(image_size, 1024);
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 586/675] drm/amdgpu: fix resource leak on ACP reset timeout
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (584 preceding siblings ...)
2026-07-30 14:15 ` [PATCH 6.18 585/675] drm/amdgpu: fix division by zero with invalid uvd dimensions Greg Kroah-Hartman
@ 2026-07-30 14:15 ` Greg Kroah-Hartman
2026-07-30 14:15 ` [PATCH 6.18 587/675] drm/amdgpu: invoke pm_genpd_remove() before freeing genpd Greg Kroah-Hartman
` (93 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:15 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Ce Sun, Tao Zhou, Alex Deucher
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Ce Sun <cesun102@amd.com>
commit 020da7c5aac5b86bad8a1571f6eda6b8cff9331d upstream.
When ACP soft reset poll times out, original code returns early without cleanup,
leaking MFD child devices, genpd links and all ACP heap allocations.
Replace direct early return with goto out to force run all cleanup logic
regardless of reset success, preserve timeout error code for caller.
Signed-off-by: Ce Sun <cesun102@amd.com>
Reviewed-by: Tao Zhou <tao.zhou1@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 98073e4328d7a8d75d03696ab27f6de70ef1aeda)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c | 11 +++++++----
1 file changed, 7 insertions(+), 4 deletions(-)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c
@@ -505,6 +505,7 @@ static int acp_hw_fini(struct amdgpu_ip_
u32 val = 0;
u32 count = 0;
struct amdgpu_device *adev = ip_block->adev;
+ int ret = 0;
/* return early if no ACP */
if (!adev->acp.acp_genpd) {
@@ -526,7 +527,8 @@ static int acp_hw_fini(struct amdgpu_ip_
break;
if (--count == 0) {
dev_err(&adev->pdev->dev, "Failed to reset ACP\n");
- return -ETIMEDOUT;
+ ret = -ETIMEDOUT;
+ goto out;
}
udelay(100);
}
@@ -543,11 +545,12 @@ static int acp_hw_fini(struct amdgpu_ip_
break;
if (--count == 0) {
dev_err(&adev->pdev->dev, "Failed to reset ACP\n");
- return -ETIMEDOUT;
+ ret = -ETIMEDOUT;
+ goto out;
}
udelay(100);
}
-
+out:
device_for_each_child(adev->acp.parent, NULL,
acp_genpd_remove_device);
@@ -556,7 +559,7 @@ static int acp_hw_fini(struct amdgpu_ip_
kfree(adev->acp.acp_genpd);
kfree(adev->acp.acp_cell);
- return 0;
+ return ret;
}
static int acp_suspend(struct amdgpu_ip_block *ip_block)
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 587/675] drm/amdgpu: invoke pm_genpd_remove() before freeing genpd
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (585 preceding siblings ...)
2026-07-30 14:15 ` [PATCH 6.18 586/675] drm/amdgpu: fix resource leak on ACP reset timeout Greg Kroah-Hartman
@ 2026-07-30 14:15 ` Greg Kroah-Hartman
2026-07-30 14:15 ` [PATCH 6.18 588/675] drm/amdgpu: fix aperture mapping leak Greg Kroah-Hartman
` (92 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:15 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Ce Sun, Tao Zhou, Alex Deucher
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Ce Sun <cesun102@amd.com>
commit 28c9b3c5dc35cc790d11e26ca3fc6e068be63998 upstream.
Call pm_genpd_remove() to unregister from global list prior to releasing
acp_genpd memory, and clear the pointer after free.
Signed-off-by: Ce Sun <cesun102@amd.com>
Reviewed-by: Tao Zhou <tao.zhou1@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit cd8650d7a91ee8b768e202354672553faa5cc1f2)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c | 2 ++
1 file changed, 2 insertions(+)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c
@@ -556,7 +556,9 @@ out:
mfd_remove_devices(adev->acp.parent);
kfree(adev->acp.acp_res);
+ pm_genpd_remove(&adev->acp.acp_genpd->gpd);
kfree(adev->acp.acp_genpd);
+ adev->acp.acp_genpd = NULL;
kfree(adev->acp.acp_cell);
return ret;
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 588/675] drm/amdgpu: fix aperture mapping leak
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (586 preceding siblings ...)
2026-07-30 14:15 ` [PATCH 6.18 587/675] drm/amdgpu: invoke pm_genpd_remove() before freeing genpd Greg Kroah-Hartman
@ 2026-07-30 14:15 ` Greg Kroah-Hartman
2026-07-30 14:15 ` [PATCH 6.18 589/675] drm/amd/pm: fix smu13 power limit range calculation Greg Kroah-Hartman
` (91 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:15 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Asad Kamal, Christian König,
Lijo Lazar, Alex Deucher
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Asad Kamal <asad.kamal@amd.com>
commit ea772a440d56b285f4d491affac50ecd41f6b402 upstream.
amdgpu_pci_remove() calls drm_dev_unplug() before invoking the driver
fini routines. This causes drm_dev_enter() in amdgpu_ttm_fini() to
always return false, so iounmap(aper_base_kaddr) never runs on normal
driver unload, leaving an orphaned entry in the x86 PAT interval tree.
On connected_to_cpu hardware, the aperture is mapped write-back (WB) via
ioremap_cache(). On reload, IP discovery calls memremap(..., MEMREMAP_WC)
over the same range. The WC vs WB conflict causes:
ioremap error for 0x..., requested 0x1, got 0x0
amdgpu: discovery failed: -2
Fix by switching to devres-managed mappings so cleanup is guaranteed
regardless of drm_dev_enter() state:
- connected_to_cpu path: devm_memremap(MEMREMAP_WB). For
IORESOURCE_SYSTEM_RAM ranges this takes the try_ram_remap() shortcut,
returning __va(offset) from the existing kernel direct map. No new
ioremap VA or PAT entry is created, so there is nothing to orphan.
- dGPU path: devm_ioremap_wc() registers iounmap() as a devres action,
guaranteeing cleanup at device_del() time.
Also remove iounmap(aper_base_kaddr) from amdgpu_device_unmap_mmio()
since the mapping is now devres-owned.
v2: Remove redundant x86_64 guard (Lijo)
Fixes: 9d0af8b4def0 ("drm/amdgpu: pre-map device buffer as cached for A+A config")
Signed-off-by: Asad Kamal <asad.kamal@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit d871e99879cb5fd1fa798b006b4888887e63a17a)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 2 -
drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 36 ++++++++++++-----------------
2 files changed, 16 insertions(+), 22 deletions(-)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -4946,8 +4946,6 @@ static void amdgpu_device_unmap_mmio(str
iounmap(adev->rmmio);
adev->rmmio = NULL;
- if (adev->mman.aper_base_kaddr)
- iounmap(adev->mman.aper_base_kaddr);
adev->mman.aper_base_kaddr = NULL;
/* Memory manager related */
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
@@ -1980,18 +1980,23 @@ int amdgpu_ttm_init(struct amdgpu_device
/* Change the size here instead of the init above so only lpfn is affected */
amdgpu_ttm_set_buffer_funcs_status(adev, false);
#ifdef CONFIG_64BIT
-#ifdef CONFIG_X86
- if (adev->gmc.xgmi.connected_to_cpu)
- adev->mman.aper_base_kaddr = ioremap_cache(adev->gmc.aper_base,
- adev->gmc.visible_vram_size);
-
- else if (adev->gmc.is_app_apu)
+ if (adev->gmc.xgmi.connected_to_cpu) {
+ void *kaddr = devm_memremap(adev->dev, adev->gmc.aper_base,
+ adev->gmc.visible_vram_size,
+ MEMREMAP_WB);
+ if (IS_ERR(kaddr))
+ return PTR_ERR(kaddr);
+ adev->mman.aper_base_kaddr = (__force void __iomem *)kaddr;
+ } else if (adev->gmc.is_app_apu) {
DRM_DEBUG_DRIVER(
"No need to ioremap when real vram size is 0\n");
- else
-#endif
- adev->mman.aper_base_kaddr = ioremap_wc(adev->gmc.aper_base,
- adev->gmc.visible_vram_size);
+ } else {
+ adev->mman.aper_base_kaddr = devm_ioremap_wc(adev->dev,
+ adev->gmc.aper_base,
+ adev->gmc.visible_vram_size);
+ if (!adev->mman.aper_base_kaddr)
+ return -ENOMEM;
+ }
#endif
/*
@@ -2152,8 +2157,6 @@ int amdgpu_ttm_init(struct amdgpu_device
*/
void amdgpu_ttm_fini(struct amdgpu_device *adev)
{
- int idx;
-
if (!adev->mman.initialized)
return;
@@ -2180,14 +2183,7 @@ void amdgpu_ttm_fini(struct amdgpu_devic
amdgpu_ttm_fw_reserve_vram_fini(adev);
amdgpu_ttm_drv_reserve_vram_fini(adev);
- if (drm_dev_enter(adev_to_drm(adev), &idx)) {
-
- if (adev->mman.aper_base_kaddr)
- iounmap(adev->mman.aper_base_kaddr);
- adev->mman.aper_base_kaddr = NULL;
-
- drm_dev_exit(idx);
- }
+ adev->mman.aper_base_kaddr = NULL;
if (!adev->gmc.is_app_apu)
amdgpu_vram_mgr_fini(adev);
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 589/675] drm/amd/pm: fix smu13 power limit range calculation
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (587 preceding siblings ...)
2026-07-30 14:15 ` [PATCH 6.18 588/675] drm/amdgpu: fix aperture mapping leak Greg Kroah-Hartman
@ 2026-07-30 14:15 ` Greg Kroah-Hartman
2026-07-30 14:15 ` [PATCH 6.18 590/675] drm/amdgpu: fix check in amdgpu_hmm_invalidate_gfx Greg Kroah-Hartman
` (90 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:15 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Yang Wang, Kenneth Feng,
Alex Deucher
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Yang Wang <kevinyang.wang@amd.com>
commit 220f22e1d66c1cfb63387eb1c4210f92a357c2d9 upstream.
SMU13 reports SocketPowerLimitAc/Dc as the default power limit, but
MsgLimits.Power may carry a different firmware bound for the same PPT
throttler. Using only the socket limit for both min and max can therefore
expose an incorrect power range.
Keep the socket limit as the default, but derive the range from both values:
use the lower value for the min base and the higher value for the max base
before applying OD percentages. Keep the current limit query independent
from the cap calculation.
Fixes: 1eaf26db9590 ("drm/amd/pm: fix smu13 power limit default/cap calculation")
Closes: https://gitlab.freedesktop.org/drm/amd/-/work_items/5419
Signed-off-by: Yang Wang <kevinyang.wang@amd.com>
Reviewed-by: Kenneth Feng <kenneth.feng@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit f45bbf0f62f266ed8422d84f347d75d5fca846a7)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_0_ppt.c | 11 +++++++----
drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_7_ppt.c | 15 ++++++++-------
2 files changed, 15 insertions(+), 11 deletions(-)
--- a/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_0_ppt.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_0_ppt.c
@@ -2481,11 +2481,14 @@ static int smu_v13_0_0_get_power_limit(s
uint32_t pp_limit = smu->adev->pm.ac_power ?
skutable->SocketPowerLimitAc[PPT_THROTTLER_PPT0] :
skutable->SocketPowerLimitDc[PPT_THROTTLER_PPT0];
- uint32_t power_limit = 0, od_percent_upper = 0, od_percent_lower = 0;
+ uint32_t msg_limit = skutable->MsgLimits.Power[PPT_THROTTLER_PPT0][POWER_SOURCE_AC];
+ uint32_t min_limit = min_t(uint32_t, pp_limit, msg_limit);
+ uint32_t max_limit = max_t(uint32_t, pp_limit, msg_limit);
+ uint32_t od_percent_upper = 0, od_percent_lower = 0;
int ret;
if (current_power_limit) {
- ret = smu_v13_0_get_current_power_limit(smu, &power_limit);
+ ret = smu_v13_0_get_current_power_limit(smu, current_power_limit);
if (ret)
*current_power_limit = pp_limit;
}
@@ -2508,12 +2511,12 @@ static int smu_v13_0_0_get_power_limit(s
od_percent_upper, od_percent_lower, pp_limit);
if (max_power_limit) {
- *max_power_limit = pp_limit * (100 + od_percent_upper);
+ *max_power_limit = max_limit * (100 + od_percent_upper);
*max_power_limit /= 100;
}
if (min_power_limit) {
- *min_power_limit = pp_limit * (100 - od_percent_lower);
+ *min_power_limit = min_limit * (100 - od_percent_lower);
*min_power_limit /= 100;
}
--- a/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_7_ppt.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_7_ppt.c
@@ -2442,15 +2442,16 @@ static int smu_v13_0_7_get_power_limit(s
uint32_t pp_limit = smu->adev->pm.ac_power ?
skutable->SocketPowerLimitAc[PPT_THROTTLER_PPT0] :
skutable->SocketPowerLimitDc[PPT_THROTTLER_PPT0];
- uint32_t power_limit = 0, od_percent_upper = 0, od_percent_lower = 0;
+ uint32_t msg_limit = skutable->MsgLimits.Power[PPT_THROTTLER_PPT0][POWER_SOURCE_AC];
+ uint32_t min_limit = min_t(uint32_t, pp_limit, msg_limit);
+ uint32_t max_limit = max_t(uint32_t, pp_limit, msg_limit);
+ uint32_t od_percent_upper = 0, od_percent_lower = 0;
int ret;
if (current_power_limit) {
- ret = smu_v13_0_get_current_power_limit(smu, &power_limit);
+ ret = smu_v13_0_get_current_power_limit(smu, current_power_limit);
if (ret)
- power_limit = pp_limit;
-
- *current_power_limit = power_limit;
+ *current_power_limit = pp_limit;
}
if (default_power_limit)
@@ -2471,12 +2472,12 @@ static int smu_v13_0_7_get_power_limit(s
od_percent_upper, od_percent_lower, pp_limit);
if (max_power_limit) {
- *max_power_limit = pp_limit * (100 + od_percent_upper);
+ *max_power_limit = max_limit * (100 + od_percent_upper);
*max_power_limit /= 100;
}
if (min_power_limit) {
- *min_power_limit = pp_limit * (100 - od_percent_lower);
+ *min_power_limit = min_limit * (100 - od_percent_lower);
*min_power_limit /= 100;
}
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 590/675] drm/amdgpu: fix check in amdgpu_hmm_invalidate_gfx
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (588 preceding siblings ...)
2026-07-30 14:15 ` [PATCH 6.18 589/675] drm/amd/pm: fix smu13 power limit range calculation Greg Kroah-Hartman
@ 2026-07-30 14:15 ` Greg Kroah-Hartman
2026-07-30 14:15 ` [PATCH 6.18 591/675] bpf: Fix same-register dst/src OOB read and pointer leak in sock_ops Greg Kroah-Hartman
` (89 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:15 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Christian König, Alex Deucher
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Christian König <christian.koenig@amd.com>
commit 52f650963d8825e97a0ccdd2b616f8a01d9d3d38 upstream.
For a short moment during alloc/free the userptr BO is not part of his VM,
so bo->vm_bo can be NULL.
Keep a reference to the VM root PD as parent of the userptr BO so that
we can always use that to wait for all submissions of the VM instead of
only the one involving the userptr BO.
Signed-off-by: Christian König <christian.koenig@amd.com>
Fixes: 91250893cbaa ("drm/amdgpu: fix waiting for all submissions for userptrs")
Closes: https://gitlab.freedesktop.org/drm/amd/-/work_items/5399
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 631849ff5d603841e74f19f4a5e30fe1f7d7cf30)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c | 1 +
drivers/gpu/drm/amd/amdgpu/amdgpu_hmm.c | 3 +--
2 files changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
@@ -523,6 +523,7 @@ int amdgpu_gem_userptr_ioctl(struct drm_
bo = gem_to_amdgpu_bo(gobj);
bo->preferred_domains = AMDGPU_GEM_DOMAIN_GTT;
bo->allowed_domains = AMDGPU_GEM_DOMAIN_GTT;
+ bo->parent = amdgpu_bo_ref(fpriv->vm.root.bo);
r = amdgpu_ttm_tt_set_userptr(&bo->tbo, args->addr, args->flags);
if (r)
goto release_object;
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_hmm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_hmm.c
@@ -69,7 +69,6 @@ static bool amdgpu_hmm_invalidate_gfx(st
{
struct amdgpu_bo *bo = container_of(mni, struct amdgpu_bo, notifier);
struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
- struct amdgpu_bo *vm_root = bo->vm_bo->vm->root.bo;
long r;
if (!mmu_notifier_range_blockable(range))
@@ -80,7 +79,7 @@ static bool amdgpu_hmm_invalidate_gfx(st
mmu_interval_set_seq(mni, cur_seq);
amdgpu_vm_bo_invalidate(bo, false);
- r = dma_resv_wait_timeout(vm_root->tbo.base.resv,
+ r = dma_resv_wait_timeout(bo->parent->tbo.base.resv,
DMA_RESV_USAGE_BOOKKEEP, false,
MAX_SCHEDULE_TIMEOUT);
mutex_unlock(&adev->notifier_lock);
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 591/675] bpf: Fix same-register dst/src OOB read and pointer leak in sock_ops
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (589 preceding siblings ...)
2026-07-30 14:15 ` [PATCH 6.18 590/675] drm/amdgpu: fix check in amdgpu_hmm_invalidate_gfx Greg Kroah-Hartman
@ 2026-07-30 14:15 ` Greg Kroah-Hartman
2026-07-30 14:15 ` [PATCH 6.18 592/675] dm-verity-fec: fix the size of dm_verity_fec_io::erasures Greg Kroah-Hartman
` (88 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:15 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Quan Sun, Yinhao Hu, Kaiyan Mei,
Dongliang Mu, Emil Tsalapatis, Jiayuan Chen, Martin KaFai Lau,
Jakub Kicinski, Sasha Levin, Jay Wang
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jiayuan Chen <jiayuan.chen@linux.dev>
[ Upstream commit 10f86a2a5c91fc4c4d001960f1c21abe52545ef6 ]
When a BPF sock_ops program accesses ctx fields with dst_reg == src_reg,
the SOCK_OPS_GET_SK() and SOCK_OPS_GET_FIELD() macros fail to zero the
destination register in the !fullsock / !locked_tcp_sock path.
Both macros borrow a temporary register to check is_fullsock /
is_locked_tcp_sock when dst_reg == src_reg, because dst_reg holds the
ctx pointer. When the check is false (e.g., TCP_NEW_SYN_RECV state with
a request_sock), dst_reg should be zeroed but is not, leaving the stale
ctx pointer:
- SOCK_OPS_GET_SK: dst_reg retains the ctx pointer, passes NULL checks
as PTR_TO_SOCKET_OR_NULL, and can be used as a bogus socket pointer,
leading to stack-out-of-bounds access in helpers like
bpf_skc_to_tcp6_sock().
- SOCK_OPS_GET_FIELD: dst_reg retains the ctx pointer which the
verifier believes is a SCALAR_VALUE, leaking a kernel pointer.
Fix both macros by:
- Changing JMP_A(1) to JMP_A(2) in the fullsock path to skip the
added instruction.
- Adding BPF_MOV64_IMM(si->dst_reg, 0) after the temp register
restore in the !fullsock path, placed after the restore because
dst_reg == src_reg means we need src_reg intact to read ctx->temp.
Fixes: fd09af010788 ("bpf: sock_ops ctx access may stomp registers in corner case")
Fixes: 84f44df664e9 ("bpf: sock_ops sk access may stomp registers when dst_reg = src_reg")
Reported-by: Quan Sun <2022090917019@std.uestc.edu.cn>
Reported-by: Yinhao Hu <dddddd@hust.edu.cn>
Reported-by: Kaiyan Mei <M202472210@hust.edu.cn>
Reported-by: Dongliang Mu <dzm91@hust.edu.cn>
Reviewed-by: Emil Tsalapatis <emil@etsalapatis.com>
Closes: https://lore.kernel.org/bpf/6fe1243e-149b-4d3b-99c7-fcc9e2f75787@std.uestc.edu.cn/T/#u
Signed-off-by: Jiayuan Chen <jiayuan.chen@linux.dev>
Acked-by: Martin KaFai Lau <martin.lau@kernel.org>
Link: https://patch.msgid.link/20260407022720.162151-2-jiayuan.chen@linux.dev
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Jay Wang <wanjay@amazon.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/core/filter.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/net/core/filter.c b/net/core/filter.c
index 42385e79043131..332f4986376f11 100644
--- a/net/core/filter.c
+++ b/net/core/filter.c
@@ -10539,10 +10539,11 @@ static u32 sock_ops_convert_ctx_access(enum bpf_access_type type,
si->dst_reg, si->dst_reg, \
offsetof(OBJ, OBJ_FIELD)); \
if (si->dst_reg == si->src_reg) { \
- *insn++ = BPF_JMP_A(1); \
+ *insn++ = BPF_JMP_A(2); \
*insn++ = BPF_LDX_MEM(BPF_DW, reg, si->src_reg, \
offsetof(struct bpf_sock_ops_kern, \
temp)); \
+ *insn++ = BPF_MOV64_IMM(si->dst_reg, 0); \
} \
} while (0)
@@ -10576,10 +10577,11 @@ static u32 sock_ops_convert_ctx_access(enum bpf_access_type type,
si->dst_reg, si->src_reg, \
offsetof(struct bpf_sock_ops_kern, sk));\
if (si->dst_reg == si->src_reg) { \
- *insn++ = BPF_JMP_A(1); \
+ *insn++ = BPF_JMP_A(2); \
*insn++ = BPF_LDX_MEM(BPF_DW, reg, si->src_reg, \
offsetof(struct bpf_sock_ops_kern, \
temp)); \
+ *insn++ = BPF_MOV64_IMM(si->dst_reg, 0); \
} \
} while (0)
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 592/675] dm-verity-fec: fix the size of dm_verity_fec_io::erasures
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (590 preceding siblings ...)
2026-07-30 14:15 ` [PATCH 6.18 591/675] bpf: Fix same-register dst/src OOB read and pointer leak in sock_ops Greg Kroah-Hartman
@ 2026-07-30 14:15 ` Greg Kroah-Hartman
2026-07-30 14:15 ` [PATCH 6.18 593/675] dm-verity-fec: fix reading parity bytes split across blocks (take 3) Greg Kroah-Hartman
` (87 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:15 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Eric Biggers, Mikulas Patocka,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Eric Biggers <ebiggers@kernel.org>
commit a7fca324d7d90f7b139d4d32747c83a629fdb446 upstream.
At most 25 entries in dm_verity_fec_io::erasures are used: the maximum
number of FEC roots plus one. Therefore, set the array size
accordingly. This reduces the size of dm_verity_fec_io by 912 bytes.
Note: a later commit introduces a constant DM_VERITY_FEC_MAX_ROOTS,
which allows the size to be more clearly expressed as
DM_VERITY_FEC_MAX_ROOTS + 1. This commit just fixes the size first.
Fixes: a739ff3f543a ("dm verity: add support for forward error correction")
Cc: stable@vger.kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/md/dm-verity-fec.h | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/md/dm-verity-fec.h b/drivers/md/dm-verity-fec.h
index ec37e607cb3f09..90a0af3f35d31a 100644
--- a/drivers/md/dm-verity-fec.h
+++ b/drivers/md/dm-verity-fec.h
@@ -50,7 +50,8 @@ struct dm_verity_fec {
/* per-bio data */
struct dm_verity_fec_io {
struct rs_control *rs; /* Reed-Solomon state */
- int erasures[DM_VERITY_FEC_MAX_RSN]; /* erasures for decode_rs8 */
+ /* erasures for decode_rs8 */
+ int erasures[DM_VERITY_FEC_RSM - DM_VERITY_FEC_MIN_RSN + 1];
u8 *bufs[DM_VERITY_FEC_BUF_MAX]; /* bufs for deinterleaving */
unsigned int nbufs; /* number of buffers allocated */
u8 *output; /* buffer for corrected output */
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 593/675] dm-verity-fec: fix reading parity bytes split across blocks (take 3)
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (591 preceding siblings ...)
2026-07-30 14:15 ` [PATCH 6.18 592/675] dm-verity-fec: fix the size of dm_verity_fec_io::erasures Greg Kroah-Hartman
@ 2026-07-30 14:15 ` Greg Kroah-Hartman
2026-07-30 14:15 ` [PATCH 6.18 594/675] dm-verity-fec: replace {MAX,MIN}_RSN with {MIN,MAX}_ROOTS Greg Kroah-Hartman
` (86 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:15 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Eric Biggers, Mikulas Patocka,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Eric Biggers <ebiggers@kernel.org>
commit 430a05cb926f6bdf53e81460a2c3a553257f3f61 upstream.
fec_decode_bufs() assumes that the parity bytes of the first RS codeword
it decodes are never split across parity blocks.
This assumption is false. Consider v->fec->block_size == 4096 &&
v->fec->roots == 17 && fio->nbufs == 1, for example. In that case, each
call to fec_decode_bufs() consumes v->fec->roots * (fio->nbufs <<
DM_VERITY_FEC_BUF_RS_BITS) = 272 parity bytes.
Considering that the parity data for each message block starts on a
block boundary, the byte alignment in the parity data will iterate
through 272*i mod 4096 until the 3 parity blocks have been consumed. On
the 16th call (i=15), the alignment will be 4080 bytes into the first
block. Only 16 bytes remain in that block, but 17 parity bytes will be
needed. The code reads out-of-bounds from the parity block buffer.
Fortunately this doesn't normally happen, since it can occur only for
certain non-default values of fec_roots *and* when the maximum number of
buffers couldn't be allocated due to low memory. For example with
block_size=4096 only the following cases are affected:
fec_roots=17: nbufs in [1, 3, 5, 15]
fec_roots=19: nbufs in [1, 229]
fec_roots=21: nbufs in [1, 3, 5, 13, 15, 39, 65, 195]
fec_roots=23: nbufs in [1, 89]
Regardless, fix it by refactoring how the parity blocks are read.
Fixes: 6df90c02bae4 ("dm-verity FEC: Fix RS FEC repair for roots unaligned to block size (take 2)")
Cc: stable@vger.kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/md/dm-verity-fec.c | 100 ++++++++++++++++---------------------
1 file changed, 44 insertions(+), 56 deletions(-)
diff --git a/drivers/md/dm-verity-fec.c b/drivers/md/dm-verity-fec.c
index 03e59b85132aa7..a8fbf97b97517f 100644
--- a/drivers/md/dm-verity-fec.c
+++ b/drivers/md/dm-verity-fec.c
@@ -39,36 +39,6 @@ static inline u64 fec_interleave(struct dm_verity *v, u64 offset)
return offset + mod * (v->fec->rounds << v->data_dev_block_bits);
}
-/*
- * Read error-correcting codes for the requested RS block. Returns a pointer
- * to the data block. Caller is responsible for releasing buf.
- */
-static u8 *fec_read_parity(struct dm_verity *v, u64 rsb, int index,
- unsigned int *offset, unsigned int par_buf_offset,
- struct dm_buffer **buf, unsigned short ioprio)
-{
- u64 position, block, rem;
- u8 *res;
-
- /* We have already part of parity bytes read, skip to the next block */
- if (par_buf_offset)
- index++;
-
- position = (index + rsb) * v->fec->roots;
- block = div64_u64_rem(position, v->fec->io_size, &rem);
- *offset = par_buf_offset ? 0 : (unsigned int)rem;
-
- res = dm_bufio_read_with_ioprio(v->fec->bufio, block, buf, ioprio);
- if (IS_ERR(res)) {
- DMERR("%s: FEC %llu: parity read failed (block %llu): %ld",
- v->data_dev->name, (unsigned long long)rsb,
- (unsigned long long)block, PTR_ERR(res));
- *buf = NULL;
- }
-
- return res;
-}
-
/* Loop over each preallocated buffer slot. */
#define fec_for_each_prealloc_buffer(__i) \
for (__i = 0; __i < DM_VERITY_FEC_BUF_PREALLOC; __i++)
@@ -116,15 +86,29 @@ static int fec_decode_bufs(struct dm_verity *v, struct dm_verity_io *io,
{
int r, corrected = 0, res;
struct dm_buffer *buf;
- unsigned int n, i, j, offset, par_buf_offset = 0;
+ unsigned int n, i, j, parity_pos, to_copy;
uint16_t par_buf[DM_VERITY_FEC_RSM - DM_VERITY_FEC_MIN_RSN];
u8 *par, *block;
+ u64 parity_block;
struct bio *bio = dm_bio_from_per_bio_data(io, v->ti->per_io_data_size);
- par = fec_read_parity(v, rsb, block_offset, &offset,
- par_buf_offset, &buf, bio->bi_ioprio);
- if (IS_ERR(par))
+ /*
+ * Compute the index of the first parity block that will be needed and
+ * the starting position in that block. Then read that block.
+ *
+ * io_size is always a power of 2, but roots might not be. Note that
+ * when it's not, a codeword's parity bytes can span a block boundary.
+ */
+ parity_block = (rsb + block_offset) * v->fec->roots;
+ parity_pos = parity_block & (v->fec->io_size - 1);
+ parity_block >>= v->data_dev_block_bits;
+ par = dm_bufio_read_with_ioprio(v->fec->bufio, parity_block, &buf,
+ bio->bi_ioprio);
+ if (IS_ERR(par)) {
+ DMERR("%s: FEC %llu: parity read failed (block %llu): %ld",
+ v->data_dev->name, rsb, parity_block, PTR_ERR(par));
return PTR_ERR(par);
+ }
/*
* Decode the RS blocks we have in bufs. Each RS block results in
@@ -132,8 +116,32 @@ static int fec_decode_bufs(struct dm_verity *v, struct dm_verity_io *io,
*/
fec_for_each_buffer_rs_block(fio, n, i) {
block = fec_buffer_rs_block(v, fio, n, i);
- for (j = 0; j < v->fec->roots - par_buf_offset; j++)
- par_buf[par_buf_offset + j] = par[offset + j];
+
+ /*
+ * Copy the next 'roots' parity bytes to 'par_buf', reading
+ * another parity block if needed.
+ */
+ to_copy = min(v->fec->io_size - parity_pos, v->fec->roots);
+ for (j = 0; j < to_copy; j++)
+ par_buf[j] = par[parity_pos++];
+ if (to_copy < v->fec->roots) {
+ parity_block++;
+ parity_pos = 0;
+
+ dm_bufio_release(buf);
+ par = dm_bufio_read_with_ioprio(v->fec->bufio,
+ parity_block, &buf,
+ bio->bi_ioprio);
+ if (IS_ERR(par)) {
+ DMERR("%s: FEC %llu: parity read failed (block %llu): %ld",
+ v->data_dev->name, rsb, parity_block,
+ PTR_ERR(par));
+ return PTR_ERR(par);
+ }
+ for (; j < v->fec->roots; j++)
+ par_buf[j] = par[parity_pos++];
+ }
+
/* Decode an RS block using Reed-Solomon */
res = decode_rs8(fio->rs, block, par_buf, v->fec->rsn,
NULL, neras, fio->erasures, 0, NULL);
@@ -148,26 +156,6 @@ static int fec_decode_bufs(struct dm_verity *v, struct dm_verity_io *io,
block_offset++;
if (block_offset >= 1 << v->data_dev_block_bits)
goto done;
-
- /* Read the next block when we run out of parity bytes */
- offset += (v->fec->roots - par_buf_offset);
- /* Check if parity bytes are split between blocks */
- if (offset < v->fec->io_size && (offset + v->fec->roots) > v->fec->io_size) {
- par_buf_offset = v->fec->io_size - offset;
- for (j = 0; j < par_buf_offset; j++)
- par_buf[j] = par[offset + j];
- offset += par_buf_offset;
- } else
- par_buf_offset = 0;
-
- if (offset >= v->fec->io_size) {
- dm_bufio_release(buf);
-
- par = fec_read_parity(v, rsb, block_offset, &offset,
- par_buf_offset, &buf, bio->bi_ioprio);
- if (IS_ERR(par))
- return PTR_ERR(par);
- }
}
done:
r = corrected;
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 594/675] dm-verity-fec: replace {MAX,MIN}_RSN with {MIN,MAX}_ROOTS
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (592 preceding siblings ...)
2026-07-30 14:15 ` [PATCH 6.18 593/675] dm-verity-fec: fix reading parity bytes split across blocks (take 3) Greg Kroah-Hartman
@ 2026-07-30 14:15 ` Greg Kroah-Hartman
2026-07-30 14:15 ` [PATCH 6.18 595/675] dm-verity: fix buffer overflow in FEC calculation Greg Kroah-Hartman
` (85 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:15 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Eric Biggers, Mikulas Patocka,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Eric Biggers <ebiggers@kernel.org>
commit 82fbd6a3e29a329d439690cd7ccc4162c9cd8db6 upstream.
Every time DM_VERITY_FEC_{MAX,MIN}_RSN are used, they are subtracted
from DM_VERITY_FEC_RSM to get the bounds on the number of roots.
Therefore, replace these with {MIN,MAX}_ROOTS constants which are more
directly useful. (Note the inversion, where MAX_RSN maps to MIN_ROOTS
and MIN_RSN maps to MAX_ROOTS.) No functional change.
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/md/dm-verity-fec.c | 6 +++---
drivers/md/dm-verity-fec.h | 7 +++----
2 files changed, 6 insertions(+), 7 deletions(-)
diff --git a/drivers/md/dm-verity-fec.c b/drivers/md/dm-verity-fec.c
index a8fbf97b97517f..cebcc8fd25d700 100644
--- a/drivers/md/dm-verity-fec.c
+++ b/drivers/md/dm-verity-fec.c
@@ -87,7 +87,7 @@ static int fec_decode_bufs(struct dm_verity *v, struct dm_verity_io *io,
int r, corrected = 0, res;
struct dm_buffer *buf;
unsigned int n, i, j, parity_pos, to_copy;
- uint16_t par_buf[DM_VERITY_FEC_RSM - DM_VERITY_FEC_MIN_RSN];
+ uint16_t par_buf[DM_VERITY_FEC_MAX_ROOTS];
u8 *par, *block;
u64 parity_block;
struct bio *bio = dm_bio_from_per_bio_data(io, v->ti->per_io_data_size);
@@ -605,8 +605,8 @@ int verity_fec_parse_opt_args(struct dm_arg_set *as, struct dm_verity *v,
} else if (!strcasecmp(arg_name, DM_VERITY_OPT_FEC_ROOTS)) {
if (sscanf(arg_value, "%hhu%c", &num_c, &dummy) != 1 || !num_c ||
- num_c < (DM_VERITY_FEC_RSM - DM_VERITY_FEC_MAX_RSN) ||
- num_c > (DM_VERITY_FEC_RSM - DM_VERITY_FEC_MIN_RSN)) {
+ num_c < DM_VERITY_FEC_MIN_ROOTS ||
+ num_c > DM_VERITY_FEC_MAX_ROOTS) {
ti->error = "Invalid " DM_VERITY_OPT_FEC_ROOTS;
return -EINVAL;
}
diff --git a/drivers/md/dm-verity-fec.h b/drivers/md/dm-verity-fec.h
index 90a0af3f35d31a..b3460103e0e109 100644
--- a/drivers/md/dm-verity-fec.h
+++ b/drivers/md/dm-verity-fec.h
@@ -13,8 +13,8 @@
/* Reed-Solomon(M, N) parameters */
#define DM_VERITY_FEC_RSM 255
-#define DM_VERITY_FEC_MAX_RSN 253
-#define DM_VERITY_FEC_MIN_RSN 231 /* ~10% space overhead */
+#define DM_VERITY_FEC_MIN_ROOTS 2 /* RS(255, 253): ~0.8% space overhead */
+#define DM_VERITY_FEC_MAX_ROOTS 24 /* RS(255, 231): ~10% space overhead */
/* buffers for deinterleaving and decoding */
#define DM_VERITY_FEC_BUF_PREALLOC 1 /* buffers to preallocate */
@@ -50,8 +50,7 @@ struct dm_verity_fec {
/* per-bio data */
struct dm_verity_fec_io {
struct rs_control *rs; /* Reed-Solomon state */
- /* erasures for decode_rs8 */
- int erasures[DM_VERITY_FEC_RSM - DM_VERITY_FEC_MIN_RSN + 1];
+ int erasures[DM_VERITY_FEC_MAX_ROOTS + 1]; /* erasures for decode_rs8 */
u8 *bufs[DM_VERITY_FEC_BUF_MAX]; /* bufs for deinterleaving */
unsigned int nbufs; /* number of buffers allocated */
u8 *output; /* buffer for corrected output */
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 595/675] dm-verity: fix buffer overflow in FEC calculation
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (593 preceding siblings ...)
2026-07-30 14:15 ` [PATCH 6.18 594/675] dm-verity-fec: replace {MAX,MIN}_RSN with {MIN,MAX}_ROOTS Greg Kroah-Hartman
@ 2026-07-30 14:15 ` Greg Kroah-Hartman
2026-07-30 14:15 ` [PATCH 6.18 596/675] drm/xe/uapi: Reject coh_none PAT index for CPU_ADDR_MIRROR Greg Kroah-Hartman
` (84 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:15 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Mikulas Patocka, Sami Tolvanen,
Eric Biggers, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Mikulas Patocka <mpatocka@redhat.com>
commit 31d6e6c0ba8d5a7bd59660035a089307100c5e8e upstream.
There's a buffer overflow in dm-verity-fec:
if (neras && *neras <= v->fec->roots)
fio->erasures[(*neras)++] = i;
This allows *neras to reach roots + 1 (the post-increment pushes it past
roots). This value is then passed as no_eras to decode_rs8(). Inside the
RS decoder (lib/reed_solomon/decode_rs.c:113-121), the erasure locator
polynomial loop writes lambda[j] where j can reach nroots + 1 — one
element past the end of lambda[] (which is sized nroots + 1, valid
indices 0..nroots). The out-of-bounds write lands on syn[0], corrupting
the syndrome buffer.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Assisted-by: Claude:claude-opus-4-6
Cc: stable@vger.kernel.org
Fixes: a739ff3f543a ("dm verity: add support for forward error correction")
Reviewed-by: Sami Tolvanen <samitolvanen@google.com>
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/md/dm-verity-fec.c | 4 ++--
drivers/md/dm-verity-fec.h | 2 +-
2 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/md/dm-verity-fec.c b/drivers/md/dm-verity-fec.c
index cebcc8fd25d700..d1e4fbc5a21d9b 100644
--- a/drivers/md/dm-verity-fec.c
+++ b/drivers/md/dm-verity-fec.c
@@ -250,7 +250,7 @@ static int fec_read_bufs(struct dm_verity *v, struct dm_verity_io *io,
(unsigned long long)block, PTR_ERR(bbuf));
/* assume the block is corrupted */
- if (neras && *neras <= v->fec->roots)
+ if (neras && *neras < v->fec->roots)
fio->erasures[(*neras)++] = i;
continue;
@@ -268,7 +268,7 @@ static int fec_read_bufs(struct dm_verity *v, struct dm_verity_io *io,
* skip if we have already found the theoretical
* maximum number (i.e. fec->roots) of erasures
*/
- if (neras && *neras <= v->fec->roots &&
+ if (neras && *neras < v->fec->roots &&
fec_is_erasure(v, io, want_digest, bbuf))
fio->erasures[(*neras)++] = i;
}
diff --git a/drivers/md/dm-verity-fec.h b/drivers/md/dm-verity-fec.h
index b3460103e0e109..8552b5d3c91527 100644
--- a/drivers/md/dm-verity-fec.h
+++ b/drivers/md/dm-verity-fec.h
@@ -50,7 +50,7 @@ struct dm_verity_fec {
/* per-bio data */
struct dm_verity_fec_io {
struct rs_control *rs; /* Reed-Solomon state */
- int erasures[DM_VERITY_FEC_MAX_ROOTS + 1]; /* erasures for decode_rs8 */
+ int erasures[DM_VERITY_FEC_MAX_ROOTS]; /* erasures for decode_rs8 */
u8 *bufs[DM_VERITY_FEC_BUF_MAX]; /* bufs for deinterleaving */
unsigned int nbufs; /* number of buffers allocated */
u8 *output; /* buffer for corrected output */
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 596/675] drm/xe/uapi: Reject coh_none PAT index for CPU_ADDR_MIRROR
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (594 preceding siblings ...)
2026-07-30 14:15 ` [PATCH 6.18 595/675] dm-verity: fix buffer overflow in FEC calculation Greg Kroah-Hartman
@ 2026-07-30 14:15 ` Greg Kroah-Hartman
2026-07-30 14:15 ` [PATCH 6.18 597/675] ublk: wait on ublk_dev_ready() instead of ub->completion Greg Kroah-Hartman
` (83 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:15 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Shuicheng Lin, Mathew Alwin,
Michal Mrozek, Matthew Brost, Matthew Auld, Jia Yao, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jia Yao <jia.yao@intel.com>
commit 4d58d7535e826a3175527b6174502f0db319d7f6 upstream.
Add validation in xe_vm_bind_ioctl() to reject PAT indices
with XE_COH_NONE coherency mode when used with
DRM_XE_VM_BIND_FLAG_CPU_ADDR_MIRROR.
CPU address mirror mappings use system memory that is CPU
cached, which makes them incompatible with COH_NONE PAT
indices. Allowing COH_NONE with CPU cached buffers is a
security risk, as the GPU may bypass CPU caches and read
stale sensitive data from DRAM.
Although CPU_ADDR_MIRROR does not create an immediate
mapping, the backing system memory is still CPU cached.
Apply the same PAT coherency restrictions as
DRM_XE_VM_BIND_OP_MAP_USERPTR.
v2:
- Correct fix tag
v6:
- No change
v7:
- Correct fix tag
v8:
- Rebase
v9:
- Limit the restrictions to iGPU
v10:
- Just add the iGPU logic but keep dGPU logic
Fixes: b43e864af0d4 ("drm/xe/uapi: Add DRM_XE_VM_BIND_FLAG_CPU_ADDR_MIRROR")
Cc: <stable@vger.kernel.org> # v6.15+
Cc: Shuicheng Lin <shuicheng.lin@intel.com>
Cc: Mathew Alwin <alwin.mathew@intel.com>
Cc: Michal Mrozek <michal.mrozek@intel.com>
Cc: Matthew Brost <matthew.brost@intel.com>
Cc: Matthew Auld <matthew.auld@intel.com>
Signed-off-by: Jia Yao <jia.yao@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Acked-by: Michal Mrozek <michal.mrozek@intel.com>
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patch.msgid.link/20260417055917.2027459-3-jia.yao@intel.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/xe/xe_vm.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/gpu/drm/xe/xe_vm.c b/drivers/gpu/drm/xe/xe_vm.c
index b00da90e399135..ed0c8acd0fe27c 100644
--- a/drivers/gpu/drm/xe/xe_vm.c
+++ b/drivers/gpu/drm/xe/xe_vm.c
@@ -3393,6 +3393,8 @@ static int vm_bind_ioctl_check_args(struct xe_device *xe, struct xe_vm *vm,
op == DRM_XE_VM_BIND_OP_MAP_USERPTR) ||
XE_IOCTL_DBG(xe, coh_mode == XE_COH_NONE &&
op == DRM_XE_VM_BIND_OP_MAP_USERPTR) ||
+ XE_IOCTL_DBG(xe, !IS_DGFX(xe) && coh_mode == XE_COH_NONE &&
+ is_cpu_addr_mirror) ||
XE_IOCTL_DBG(xe, op == DRM_XE_VM_BIND_OP_MAP_USERPTR &&
!IS_ENABLED(CONFIG_DRM_GPUSVM)) ||
XE_IOCTL_DBG(xe, obj &&
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 597/675] ublk: wait on ublk_dev_ready() instead of ub->completion
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (595 preceding siblings ...)
2026-07-30 14:15 ` [PATCH 6.18 596/675] drm/xe/uapi: Reject coh_none PAT index for CPU_ADDR_MIRROR Greg Kroah-Hartman
@ 2026-07-30 14:15 ` Greg Kroah-Hartman
2026-07-30 14:15 ` [PATCH 6.18 598/675] net: qrtr: ns: Raise node count limit to 512 Greg Kroah-Hartman
` (82 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:15 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, George Salisbury, Ming Lei,
Jens Axboe, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Ming Lei <tom.leiming@gmail.com>
commit 432a9b2780c0a01caf547bd1fc2fcf28aeb8d173 upstream.
ub->completion is only re-armed by a successful START_USER_RECOVERY. If
the ublk server sends END_USER_RECOVERY without one - e.g. its START
failed with -EBUSY and the error was ignored - the wait is satisfied by
the stale completion of the previous recovery cycle, and the device is
marked LIVE and the requeue list kicked while the FETCH stream is still
running and ubq->canceling is still set. The kick redispatches a
previously requeued request, __ublk_queue_rq_common() sees ->canceling
and parks it again via __ublk_abort_rq(), and after the last FETCH
clears ->canceling nothing ever kicks the requeue list again: the
request is stranded there while holding its tag. If it is the flush
machinery's flush_rq, every subsequent fsync piles up in uninterruptible
sleep and teardown hangs on tag draining. This matches a report of a
lost PREFLUSH with ext4 on top of ublk after daemon crash recovery.
ub->completion is an edge-triggered latch used as a proxy for the level
condition "every queue has fetched all I/O commands", which can regress
(F_BATCH's UNPREP, daemon death) and whose re-arm can be skipped. Drop
it and wait on the real condition instead: the new helper
ublk_wait_dev_ready_and_lock() waits on ublk_dev_ready() via
wait_var_event_interruptible(), woken from ublk_mark_io_ready(), then
re-checks it under ub->mutex, waiting again on regression, and returns
with the mutex held and readiness guaranteed.
Readiness becomes true in the same ub->mutex critical section that
clears the last queue's ->canceling, so END_USER_RECOVERY marks the
device LIVE and kicks the requeue list strictly after ->canceling
clears. The wait stays interruptible, so a server whose daemon died can
still be signalled out. For ublk_ctrl_start_dev() this replaces the
fail-fast -EINVAL on an F_BATCH ready->UNPREP regression with waiting
until the device is ready again.
Reported-by: George Salisbury <gsalisbury@apnic.net>
Fixes: 728cbac5fe21 ("ublk: move device reset into ublk_ch_release()")
Cc: stable@vger.kernel.org
Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Link: https://patch.msgid.link/20260719134540.120269-1-tom.leiming@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
[ 6.18.y tracks readiness per fetched I/O command in ->nr_io_ready rather
than per queue in ->nr_queue_ready, so wait and wake on that counter;
->canceling is cleared by ublk_reset_io_flags(), which stays in
ublk_mark_io_ready(). UBLK_F_BATCH_IO does not exist here, so
ublk_ctrl_start_dev() has no F_BATCH readiness re-check to replace, and
readiness can only regress via ublk_reset_ch_dev() on daemon death. ]
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/block/ublk_drv.c | 52 ++++++++++++++++++++++++++++------------
1 file changed, 37 insertions(+), 15 deletions(-)
diff --git a/drivers/block/ublk_drv.c b/drivers/block/ublk_drv.c
index c339222513b03c..cb31e96f01cdd6 100644
--- a/drivers/block/ublk_drv.c
+++ b/drivers/block/ublk_drv.c
@@ -19,6 +19,7 @@
#include <linux/errno.h>
#include <linux/major.h>
#include <linux/wait.h>
+#include <linux/wait_bit.h>
#include <linux/blkdev.h>
#include <linux/init.h>
#include <linux/swap.h>
@@ -26,7 +27,6 @@
#include <linux/compat.h>
#include <linux/mutex.h>
#include <linux/writeback.h>
-#include <linux/completion.h>
#include <linux/highmem.h>
#include <linux/sysfs.h>
#include <linux/miscdevice.h>
@@ -230,7 +230,6 @@ struct ublk_device {
struct ublk_params params;
- struct completion completion;
u32 nr_io_ready;
bool unprivileged_daemons;
struct mutex cancel_mutex;
@@ -2150,9 +2149,13 @@ static void ublk_mark_io_ready(struct ublk_device *ub)
ub->nr_io_ready++;
if (ublk_dev_ready(ub)) {
- /* now we are ready for handling ublk io request */
+ /*
+ * now we are ready for handling ublk io request, clear
+ * device-level canceling flag and wake ublk_dev_ready()
+ * waiters
+ */
ublk_reset_io_flags(ub);
- complete_all(&ub->completion);
+ wake_up_var(&ub->nr_io_ready);
}
}
@@ -2829,7 +2832,6 @@ static int ublk_init_queues(struct ublk_device *ub)
goto fail;
}
- init_completion(&ub->completion);
return 0;
fail:
@@ -2966,6 +2968,26 @@ static bool ublk_validate_user_pid(struct ublk_device *ub, pid_t ublksrv_pid)
return ub->ublksrv_tgid == ublksrv_pid;
}
+/*
+ * Wait until all queues have fetched their I/O commands, and return with
+ * ub->mutex held and readiness guaranteed: then every queue's ->canceling
+ * is cleared. Ready may regress between wakeup and mutex_lock() (daemon
+ * death), so re-check it under the mutex and wait again.
+ */
+static int ublk_wait_dev_ready_and_lock(struct ublk_device *ub)
+{
+ while (true) {
+ if (wait_var_event_interruptible(&ub->nr_io_ready,
+ ublk_dev_ready(ub)))
+ return -EINTR;
+
+ mutex_lock(&ub->mutex);
+ if (ublk_dev_ready(ub))
+ return 0;
+ mutex_unlock(&ub->mutex);
+ }
+}
+
static int ublk_ctrl_start_dev(struct ublk_device *ub,
const struct ublksrv_ctrl_cmd *header)
{
@@ -3031,13 +3053,13 @@ static int ublk_ctrl_start_dev(struct ublk_device *ub,
lim.max_segments = ub->params.seg.max_segments;
}
- if (wait_for_completion_interruptible(&ub->completion) != 0)
+ if (ublk_wait_dev_ready_and_lock(ub))
return -EINTR;
- if (!ublk_validate_user_pid(ub, ublksrv_pid))
- return -EINVAL;
-
- mutex_lock(&ub->mutex);
+ if (!ublk_validate_user_pid(ub, ublksrv_pid)) {
+ ret = -EINVAL;
+ goto out_unlock;
+ }
if (ub->dev_info.state == UBLK_S_DEV_LIVE ||
test_bit(UB_STATE_USED, &ub->state)) {
ret = -EEXIST;
@@ -3549,7 +3571,6 @@ static int ublk_ctrl_start_recovery(struct ublk_device *ub,
goto out_unlock;
}
pr_devel("%s: start recovery for dev id %d.\n", __func__, header->dev_id);
- init_completion(&ub->completion);
ret = 0;
out_unlock:
mutex_unlock(&ub->mutex);
@@ -3565,16 +3586,17 @@ static int ublk_ctrl_end_recovery(struct ublk_device *ub,
pr_devel("%s: Waiting for all FETCH_REQs, dev id %d...\n", __func__,
header->dev_id);
- if (wait_for_completion_interruptible(&ub->completion))
+ if (ublk_wait_dev_ready_and_lock(ub))
return -EINTR;
pr_devel("%s: All FETCH_REQs received, dev id %d\n", __func__,
header->dev_id);
- if (!ublk_validate_user_pid(ub, ublksrv_pid))
- return -EINVAL;
+ if (!ublk_validate_user_pid(ub, ublksrv_pid)) {
+ ret = -EINVAL;
+ goto out_unlock;
+ }
- mutex_lock(&ub->mutex);
if (ublk_nosrv_should_stop_dev(ub))
goto out_unlock;
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 598/675] net: qrtr: ns: Raise node count limit to 512
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (596 preceding siblings ...)
2026-07-30 14:15 ` [PATCH 6.18 597/675] ublk: wait on ublk_dev_ready() instead of ub->completion Greg Kroah-Hartman
@ 2026-07-30 14:15 ` Greg Kroah-Hartman
2026-07-30 14:15 ` [PATCH 6.18 599/675] ksmbd: validate num_subauth when copying ACE in set_ntacl_dacl Greg Kroah-Hartman
` (81 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:15 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Youssef Samir, Jakub Kicinski,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Youssef Samir <youssef.abdulrahman@oss.qualcomm.com>
commit ff194cffd586cbd4cc49eccb002c65f2a902a277 upstream.
The current node limit of 64 breaks the functionality for a number of AI200
deployments that have up to 384 nodes. Raise the limit to 512.
Fixes: 27d5e84e810b ("net: qrtr: ns: Limit the total number of nodes")
Cc: stable@vger.kernel.org
Signed-off-by: Youssef Samir <youssef.abdulrahman@oss.qualcomm.com>
Link: https://patch.msgid.link/20260713145901.212396-1-youssef.abdulrahman@oss.qualcomm.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/qrtr/ns.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/net/qrtr/ns.c b/net/qrtr/ns.c
index a10e8de4f7e105..e8e3ba1b3b8239 100644
--- a/net/qrtr/ns.c
+++ b/net/qrtr/ns.c
@@ -85,9 +85,9 @@ struct qrtr_node {
/* Max nodes limit is chosen based on the current platform requirements.
* If the requirement changes in the future, this value can be increased.
*/
-#define QRTR_NS_MAX_NODES 64
+#define QRTR_NS_MAX_NODES 512
-static u8 node_count;
+static u16 node_count;
static struct qrtr_node *node_get(unsigned int node_id)
{
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 599/675] ksmbd: validate num_subauth when copying ACE in set_ntacl_dacl
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (597 preceding siblings ...)
2026-07-30 14:15 ` [PATCH 6.18 598/675] net: qrtr: ns: Raise node count limit to 512 Greg Kroah-Hartman
@ 2026-07-30 14:15 ` Greg Kroah-Hartman
2026-07-30 14:15 ` [PATCH 6.18 600/675] ksmbd: restore DACL size on check_add_overflow() to avoid malformed ACL Greg Kroah-Hartman
` (80 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:15 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Haofeng Li, ChenXiaoSong,
Namjae Jeon, Steve French, Wentao Guan, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Haofeng Li <lihaofeng@kylinos.cn>
commit 47f0b34f6bc98ed85bfdc293e8f3e432ec24958d upstream.
set_ntacl_dacl() copies each ACE from the attacker-controlled stored
security descriptor verbatim into the response DACL without checking
sid.num_subauth. The ACE bytes (including an unchecked num_subauth)
originate from an authenticated SMB2_SET_INFO(SecInfo=DACL) that is
stored raw via ksmbd_vfs_set_sd_xattr(); parse_dacl() rejects a bad ACE
with `break` rather than an error, so parse_sec_desc() still returns
success and the malformed SD reaches the xattr intact.
On a subsequent SMB2_QUERY_INFO(SecInfo=DACL) for an inode carrying a
POSIX access ACL, build_sec_desc() -> set_ntacl_dacl() ->
set_posix_acl_entries_dacl() walks the copied ACEs and reads
ntace->sid.sub_auth[ntace->sid.num_subauth - 1]
with num_subauth taken straight from the stored SD. Since sub_auth[]
is fixed at SID_MAX_SUB_AUTHORITIES (15), a crafted num_subauth (e.g.
255) drives an out-of-bounds heap read of ~1 KB with an offset fully
controlled by an authenticated client.
The sibling functions already gate this field:
parse_dacl() -- num_subauth == 0 || > SID_MAX_SUB_AUTHORITIES
parse_sid() -- num_subauth > SID_MAX_SUB_AUTHORITIES
smb_copy_sid() -- min_t(u8, num_subauth, SID_MAX_SUB_AUTHORITIES)
set_ntacl_dacl() is the lone inconsistent path that omits the check.
Add the same num_subauth validation in set_ntacl_dacl() before copying
the ACE, matching the gate already enforced by parse_dacl().
Signed-off-by: Haofeng Li <lihaofeng@kylinos.cn>
Reviewed-by: ChenXiaoSong <chenxiaosong@kylinos.cn>
Suggested-by: Namjae Jeon <linkinjeon@kernel.org>
Acked-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Wentao Guan <guanwentao@uniontech.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
fs/smb/server/smbacl.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/fs/smb/server/smbacl.c b/fs/smb/server/smbacl.c
index b09bc8d9389a2a..173469d112f101 100644
--- a/fs/smb/server/smbacl.c
+++ b/fs/smb/server/smbacl.c
@@ -745,12 +745,18 @@ static void set_ntacl_dacl(struct mnt_idmap *idmap,
if (nt_ace_size > aces_size)
break;
+ if (ntace->sid.num_subauth == 0 ||
+ ntace->sid.num_subauth > SID_MAX_SUB_AUTHORITIES)
+ goto next_ace;
+
memcpy((char *)pndace + size, ntace, nt_ace_size);
if (check_add_overflow(size, nt_ace_size, &size))
break;
+ num_aces++;
+
+next_ace:
aces_size -= nt_ace_size;
ntace = (struct smb_ace *)((char *)ntace + nt_ace_size);
- num_aces++;
}
}
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 600/675] ksmbd: restore DACL size on check_add_overflow() to avoid malformed ACL
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (598 preceding siblings ...)
2026-07-30 14:15 ` [PATCH 6.18 599/675] ksmbd: validate num_subauth when copying ACE in set_ntacl_dacl Greg Kroah-Hartman
@ 2026-07-30 14:15 ` Greg Kroah-Hartman
2026-07-30 14:15 ` [PATCH 6.18 601/675] ksmbd: bound DACL dedup walk to copied ACEs Greg Kroah-Hartman
` (79 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:15 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Wentao Guan, Namjae Jeon,
Steve French, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Wentao Guan <guanwentao@uniontech.com>
commit bbf0a8e931204ecdab494a88d43b0a24a04285c5 upstream.
check_add_overflow() unconditionally writes the truncated sum into *d
even on overflow, per its contract in include/linux/overflow.h.
The four check_add_overflow() guards in set_posix_acl_entries_dacl()
and set_ntacl_dacl() break out of the ACE-building loops on overflow,
but the truncated *size is then consumed downstream at the end of
set_ntacl_dacl():
pndacl->size = cpu_to_le16(le16_to_cpu(pndacl->size) + size);
This produces an on-wire NT ACL whose pndacl->size under-reports the
bytes actually written by the preceding fill_ace_for_sid()/memcpy()
calls, yielding a malformed ACL that can trigger out-of-bounds reads
when re-parsed by clients or ksmbd itself.
Restore *size to its pre-addition value on each overflow branch (via
`*size -= ace_sz` / `size -= nt_ace_size`) so that after the break,
*size once again holds the cumulative size of the successfully-written
ACEs. The committed ACL is then truncated-but-self-consistent rather
than malformed.
The ksmbd DACL builders are the only check_add_overflow() sites found
where an overflow path breaks out of a loop and the destination value
is consumed afterward. The other nearby break-style cases either
return -EINVAL on overflow (transport_ipc.c) or break without
consuming the overflowed destination value afterward (buildid.c).
Fixes: 299f962c0b02 ("ksmbd: use check_add_overflow() to prevent u16 DACL size overflow")
Assisted-by: atomcode:glm-5.2
Assisted-by: Codex:gpt-5.5
Cc: stable@vger.kernel.org
Signed-off-by: Wentao Guan <guanwentao@uniontech.com>
Acked-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
fs/smb/server/smbacl.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/fs/smb/server/smbacl.c b/fs/smb/server/smbacl.c
index 173469d112f101..ca0e4aab6dd87f 100644
--- a/fs/smb/server/smbacl.c
+++ b/fs/smb/server/smbacl.c
@@ -649,6 +649,7 @@ static void set_posix_acl_entries_dacl(struct mnt_idmap *idmap,
ace_sz = fill_ace_for_sid(ntace, sid, ACCESS_ALLOWED, flags,
pace->e_perm, 0777);
if (check_add_overflow(*size, ace_sz, size)) {
+ *size -= ace_sz;
kfree(sid);
break;
}
@@ -663,6 +664,7 @@ static void set_posix_acl_entries_dacl(struct mnt_idmap *idmap,
ace_sz = fill_ace_for_sid(ntace, sid, ACCESS_ALLOWED,
0x03, pace->e_perm, 0777);
if (check_add_overflow(*size, ace_sz, size)) {
+ *size -= ace_sz;
kfree(sid);
break;
}
@@ -708,6 +710,7 @@ static void set_posix_acl_entries_dacl(struct mnt_idmap *idmap,
ace_sz = fill_ace_for_sid(ntace, sid, ACCESS_ALLOWED, 0x0b,
pace->e_perm, 0777);
if (check_add_overflow(*size, ace_sz, size)) {
+ *size -= ace_sz;
kfree(sid);
break;
}
@@ -750,8 +753,10 @@ static void set_ntacl_dacl(struct mnt_idmap *idmap,
goto next_ace;
memcpy((char *)pndace + size, ntace, nt_ace_size);
- if (check_add_overflow(size, nt_ace_size, &size))
+ if (check_add_overflow(size, nt_ace_size, &size)) {
+ size -= nt_ace_size;
break;
+ }
num_aces++;
next_ace:
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 601/675] ksmbd: bound DACL dedup walk to copied ACEs
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (599 preceding siblings ...)
2026-07-30 14:15 ` [PATCH 6.18 600/675] ksmbd: restore DACL size on check_add_overflow() to avoid malformed ACL Greg Kroah-Hartman
@ 2026-07-30 14:15 ` Greg Kroah-Hartman
2026-07-30 14:15 ` [PATCH 6.18 602/675] ksmbd: validate ACE size against SID sub-authorities Greg Kroah-Hartman
` (78 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:15 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Namjae Jeon, Steve French,
Wentao Guan, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Namjae Jeon <linkinjeon@kernel.org>
commit 58d97fcd0bf1aee694e244cc28635b9df95b543b upstream.
set_ntacl_dacl() can stop copying ACEs before consuming the full input
DACL when size accounting overflows.
When that happens, num_aces reflects only the ACEs that were actually
copied into the output DACL, but set_posix_acl_entries_dacl() still
receives nt_num_aces and uses it to walk the existing ACE array during
dedup.
That makes the dedup walk scan past the copied ACE array and inspect
buffer tail that does not contain valid ACEs.
Split the two meanings currently carried by the NT ACE count. Pass the
number of copied NT ACEs to bound the dedup walk, and preserve the
original "input DACL had NT ACEs" state separately for the
Everyone/default ACL fallback.
This keeps the dedup walk aligned with the ACEs that are actually
present in the rebuilt DACL.
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Wentao Guan <guanwentao@uniontech.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
fs/smb/server/smbacl.c | 16 ++++++++++------
1 file changed, 10 insertions(+), 6 deletions(-)
diff --git a/fs/smb/server/smbacl.c b/fs/smb/server/smbacl.c
index ca0e4aab6dd87f..b0677e095c3292 100644
--- a/fs/smb/server/smbacl.c
+++ b/fs/smb/server/smbacl.c
@@ -595,7 +595,8 @@ static void parse_dacl(struct mnt_idmap *idmap,
static void set_posix_acl_entries_dacl(struct mnt_idmap *idmap,
struct smb_ace *pndace,
struct smb_fattr *fattr, u16 *num_aces,
- u16 *size, u32 nt_aces_num)
+ u16 *size, u16 existing_nt_aces,
+ bool had_nt_aces)
{
struct posix_acl_entry *pace;
struct smb_sid *sid;
@@ -627,14 +628,14 @@ static void set_posix_acl_entries_dacl(struct mnt_idmap *idmap,
gid = posix_acl_gid_translate(idmap, pace);
id_to_sid(gid, SIDUNIX_GROUP, sid);
- } else if (pace->e_tag == ACL_OTHER && !nt_aces_num) {
+ } else if (pace->e_tag == ACL_OTHER && !had_nt_aces) {
smb_copy_sid(sid, &sid_everyone);
} else {
kfree(sid);
continue;
}
ntace = pndace;
- for (j = 0; j < nt_aces_num; j++) {
+ for (j = 0; j < existing_nt_aces; j++) {
if (ntace->sid.sub_auth[ntace->sid.num_subauth - 1] ==
sid->sub_auth[sid->num_subauth - 1])
goto pass_same_sid;
@@ -678,7 +679,7 @@ static void set_posix_acl_entries_dacl(struct mnt_idmap *idmap,
kfree(sid);
}
- if (nt_aces_num)
+ if (had_nt_aces)
return;
posix_default_acl:
@@ -732,6 +733,7 @@ static void set_ntacl_dacl(struct mnt_idmap *idmap,
{
struct smb_ace *ntace, *pndace;
u16 nt_num_aces = le16_to_cpu(nt_dacl->num_aces), num_aces = 0;
+ u16 copied_nt_aces;
unsigned short size = 0;
int i;
@@ -765,8 +767,10 @@ static void set_ntacl_dacl(struct mnt_idmap *idmap,
}
}
+ copied_nt_aces = num_aces;
set_posix_acl_entries_dacl(idmap, pndace, fattr,
- &num_aces, &size, nt_num_aces);
+ &num_aces, &size, copied_nt_aces,
+ nt_num_aces != 0);
pndacl->num_aces = cpu_to_le16(num_aces);
pndacl->size = cpu_to_le16(le16_to_cpu(pndacl->size) + size);
}
@@ -784,7 +788,7 @@ static void set_mode_dacl(struct mnt_idmap *idmap,
if (fattr->cf_acls) {
set_posix_acl_entries_dacl(idmap, pndace, fattr,
- &num_aces, &size, num_aces);
+ &num_aces, &size, num_aces, false);
goto out;
}
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 602/675] ksmbd: validate ACE size against SID sub-authorities
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (600 preceding siblings ...)
2026-07-30 14:15 ` [PATCH 6.18 601/675] ksmbd: bound DACL dedup walk to copied ACEs Greg Kroah-Hartman
@ 2026-07-30 14:15 ` Greg Kroah-Hartman
2026-07-30 14:15 ` [PATCH 6.18 603/675] fscrypt: Avoid dynamic allocation in fscrypt_get_devices() Greg Kroah-Hartman
` (77 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:15 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, LocalHost, Namjae Jeon, Steve French,
Wentao Guan, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Namjae Jeon <linkinjeon@kernel.org>
commit 5152c6d49e3fd4e9f2e857c57527aead752f1f87 upstream.
set_ntacl_dacl() validates sid.num_subauth before copying an ACE, but
does not verify that the declared ACE size contains all sub-authorities
described by that field. An undersized ACE can therefore be copied
and later make the POSIX ACL deduplication walk inspect data beyond
the copied ACE boundary.
The existing initial bound check is also too small. It only ensures
that the ACE size field is accessible before set_ntacl_dacl() reads
sid.num_subauth farther into the input buffer.
Require enough input for the fixed SID header before accessing
num_subauth, reject ACEs smaller than that header, and skip ACEs
whose declared size cannot contain the complete SID. This makes the
validation consistent with the other ACE walk paths.
Reported-by: LocalHost <localhost.detect@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Wentao Guan <guanwentao@uniontech.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
fs/smb/server/smbacl.c | 13 ++++++++++---
1 file changed, 10 insertions(+), 3 deletions(-)
diff --git a/fs/smb/server/smbacl.c b/fs/smb/server/smbacl.c
index b0677e095c3292..d3d0a22620f96d 100644
--- a/fs/smb/server/smbacl.c
+++ b/fs/smb/server/smbacl.c
@@ -743,15 +743,22 @@ static void set_ntacl_dacl(struct mnt_idmap *idmap,
for (i = 0; i < nt_num_aces; i++) {
unsigned short nt_ace_size;
- if (offsetof(struct smb_ace, access_req) > aces_size)
+ if (aces_size < offsetof(struct smb_ace, sid) +
+ CIFS_SID_BASE_SIZE)
break;
nt_ace_size = le16_to_cpu(ntace->size);
- if (nt_ace_size > aces_size)
+ if (nt_ace_size > aces_size ||
+ nt_ace_size < offsetof(struct smb_ace, sid) +
+ CIFS_SID_BASE_SIZE)
break;
if (ntace->sid.num_subauth == 0 ||
- ntace->sid.num_subauth > SID_MAX_SUB_AUTHORITIES)
+ ntace->sid.num_subauth > SID_MAX_SUB_AUTHORITIES ||
+ nt_ace_size < offsetof(struct smb_ace, sid) +
+ CIFS_SID_BASE_SIZE +
+ sizeof(__le32) *
+ ntace->sid.num_subauth)
goto next_ace;
memcpy((char *)pndace + size, ntace, nt_ace_size);
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 603/675] fscrypt: Avoid dynamic allocation in fscrypt_get_devices()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (601 preceding siblings ...)
2026-07-30 14:15 ` [PATCH 6.18 602/675] ksmbd: validate ACE size against SID sub-authorities Greg Kroah-Hartman
@ 2026-07-30 14:15 ` Greg Kroah-Hartman
2026-07-30 14:15 ` [PATCH 6.18 604/675] drm/amd/display: Fix DTB DTO updates breaking live pixel rate sources Greg Kroah-Hartman
` (76 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:15 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Sashiko, Christoph Hellwig,
Eric Biggers, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Eric Biggers <ebiggers@kernel.org>
commit 6fe4e4b8259e1330945b5f3c9476e08473b8e0e8 upstream.
When a blk_crypto_key starts being used or is evicted, fs/crypto/ calls
fscrypt_get_devices() to get the filesystem's list of block devices,
then iterates over them and calls blk_crypto_config_supported(),
blk_crypto_start_using_key(), or blk_crypto_evict_key() on each one.
Currently, the block device pointers are placed in a dynamically
allocated array. This dynamic allocation is problematic because:
- It can fail, especially at the fscrypt_destroy_inline_crypt_key() call
site when it's invoked for inode eviction under direct reclaim.
- fscrypt_destroy_inline_crypt_key() doesn't handle the failure. It
just zeroizes and frees the blk_crypto_key without calling
blk_crypto_evict_key(). That causes a use-after-free.
For now, let's fix this in the straightforward and easily-backportable
way by switching to an on-stack array. Currently the fscrypt
multi-device functionality is used only by f2fs, which has a hardcoded
limit of 8 block devices. An on-stack array works fine for that.
(Of course, this solution won't scale up to large number of block
devices. For that we'd need a different solution, like moving the block
device iteration into the filesystem. Or in the case of btrfs, which
will only support blk-crypto-fallback, we should make it just call
blk-crypto-fallback directly, so the block devices won't be needed.)
Fixes: 22e9947a4b2b ("fscrypt: stop holding extra request_queue references")
Cc: stable@vger.kernel.org
Reported-by: Sashiko <sashiko-bot@kernel.org>
Closes: https://sashiko.dev/#/patchset/20260713023708.9245-1-ebiggers%40kernel.org
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://patch.msgid.link/20260719055602.78828-1-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
fs/crypto/inline_crypt.c | 57 ++++++++++++++--------------------------
fs/f2fs/super.c | 25 ++++++++++--------
include/linux/fscrypt.h | 18 +++++++------
3 files changed, 44 insertions(+), 56 deletions(-)
diff --git a/fs/crypto/inline_crypt.c b/fs/crypto/inline_crypt.c
index 645cc493607294..500397ca8a26fa 100644
--- a/fs/crypto/inline_crypt.c
+++ b/fs/crypto/inline_crypt.c
@@ -22,22 +22,14 @@
#include "fscrypt_private.h"
-static struct block_device **fscrypt_get_devices(struct super_block *sb,
- unsigned int *num_devs)
+static unsigned int
+fscrypt_get_devices(struct super_block *sb,
+ struct block_device *devs[FSCRYPT_MAX_DEVICES])
{
- struct block_device **devs;
-
- if (sb->s_cop->get_devices) {
- devs = sb->s_cop->get_devices(sb, num_devs);
- if (devs)
- return devs;
- }
- devs = kmalloc(sizeof(*devs), GFP_KERNEL);
- if (!devs)
- return ERR_PTR(-ENOMEM);
+ if (sb->s_cop->get_devices)
+ return sb->s_cop->get_devices(sb, devs);
devs[0] = sb->s_bdev;
- *num_devs = 1;
- return devs;
+ return 1;
}
static unsigned int fscrypt_get_dun_bytes(const struct fscrypt_inode_info *ci)
@@ -96,7 +88,7 @@ int fscrypt_select_encryption_impl(struct fscrypt_inode_info *ci,
const struct inode *inode = ci->ci_inode;
struct super_block *sb = inode->i_sb;
struct blk_crypto_config crypto_cfg;
- struct block_device **devs;
+ struct block_device *devs[FSCRYPT_MAX_DEVICES];
unsigned int num_devs;
unsigned int i;
@@ -135,20 +127,15 @@ int fscrypt_select_encryption_impl(struct fscrypt_inode_info *ci,
crypto_cfg.key_type = is_hw_wrapped_key ?
BLK_CRYPTO_KEY_TYPE_HW_WRAPPED : BLK_CRYPTO_KEY_TYPE_RAW;
- devs = fscrypt_get_devices(sb, &num_devs);
- if (IS_ERR(devs))
- return PTR_ERR(devs);
-
+ num_devs = fscrypt_get_devices(sb, devs);
for (i = 0; i < num_devs; i++) {
if (!blk_crypto_config_supported(devs[i], &crypto_cfg))
- goto out_free_devs;
+ return 0;
}
fscrypt_log_blk_crypto_impl(ci->ci_mode, devs, num_devs, &crypto_cfg);
ci->ci_inlinecrypt = true;
-out_free_devs:
- kfree(devs);
return 0;
}
@@ -164,7 +151,7 @@ int fscrypt_prepare_inline_crypt_key(struct fscrypt_prepared_key *prep_key,
enum blk_crypto_key_type key_type = is_hw_wrapped ?
BLK_CRYPTO_KEY_TYPE_HW_WRAPPED : BLK_CRYPTO_KEY_TYPE_RAW;
struct blk_crypto_key *blk_key;
- struct block_device **devs;
+ struct block_device *devs[FSCRYPT_MAX_DEVICES];
unsigned int num_devs;
unsigned int i;
int err;
@@ -182,17 +169,12 @@ int fscrypt_prepare_inline_crypt_key(struct fscrypt_prepared_key *prep_key,
}
/* Start using blk-crypto on all the filesystem's block devices. */
- devs = fscrypt_get_devices(sb, &num_devs);
- if (IS_ERR(devs)) {
- err = PTR_ERR(devs);
- goto fail;
- }
+ num_devs = fscrypt_get_devices(sb, devs);
for (i = 0; i < num_devs; i++) {
err = blk_crypto_start_using_key(devs[i], blk_key);
if (err)
break;
}
- kfree(devs);
if (err) {
fscrypt_err(inode, "error %d starting to use blk-crypto", err);
goto fail;
@@ -210,20 +192,21 @@ void fscrypt_destroy_inline_crypt_key(struct super_block *sb,
struct fscrypt_prepared_key *prep_key)
{
struct blk_crypto_key *blk_key = prep_key->blk_key;
- struct block_device **devs;
+ struct block_device *devs[FSCRYPT_MAX_DEVICES];
unsigned int num_devs;
unsigned int i;
if (!blk_key)
return;
- /* Evict the key from all the filesystem's block devices. */
- devs = fscrypt_get_devices(sb, &num_devs);
- if (!IS_ERR(devs)) {
- for (i = 0; i < num_devs; i++)
- blk_crypto_evict_key(devs[i], blk_key);
- kfree(devs);
- }
+ /*
+ * Evict the key from all the filesystem's block devices.
+ * This *must* be done before the key is freed.
+ */
+ num_devs = fscrypt_get_devices(sb, devs);
+ for (i = 0; i < num_devs; i++)
+ blk_crypto_evict_key(devs[i], blk_key);
+
kfree_sensitive(blk_key);
}
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index f6b75ce11d1c1a..6f787cbeefd096 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -3659,24 +3659,27 @@ static bool f2fs_has_stable_inodes(struct super_block *sb)
return true;
}
-static struct block_device **f2fs_get_devices(struct super_block *sb,
- unsigned int *num_devs)
+static unsigned int
+f2fs_get_devices(struct super_block *sb,
+ struct block_device *devs[FSCRYPT_MAX_DEVICES])
{
struct f2fs_sb_info *sbi = F2FS_SB(sb);
- struct block_device **devs;
+ int ndevs;
int i;
- if (!f2fs_is_multi_device(sbi))
- return NULL;
+ static_assert(MAX_DEVICES <= FSCRYPT_MAX_DEVICES);
- devs = kmalloc_array(sbi->s_ndevs, sizeof(*devs), GFP_KERNEL);
- if (!devs)
- return ERR_PTR(-ENOMEM);
+ if (!f2fs_is_multi_device(sbi)) {
+ devs[0] = sb->s_bdev;
+ return 1;
+ }
+ ndevs = sbi->s_ndevs;
+ if (WARN_ON_ONCE(ndevs > FSCRYPT_MAX_DEVICES))
+ ndevs = FSCRYPT_MAX_DEVICES;
- for (i = 0; i < sbi->s_ndevs; i++)
+ for (i = 0; i < ndevs; i++)
devs[i] = FDEV(i).bdev;
- *num_devs = sbi->s_ndevs;
- return devs;
+ return ndevs;
}
static const struct fscrypt_operations f2fs_cryptops = {
diff --git a/include/linux/fscrypt.h b/include/linux/fscrypt.h
index 516aba5b858b54..c009d4afe91857 100644
--- a/include/linux/fscrypt.h
+++ b/include/linux/fscrypt.h
@@ -57,6 +57,9 @@ struct fscrypt_name {
/* Maximum value for the third parameter of fscrypt_operations.set_context(). */
#define FSCRYPT_SET_CONTEXT_MAX_SIZE 40
+/* Maximum supported number of block devices per filesystem */
+#define FSCRYPT_MAX_DEVICES 8
+
#ifdef CONFIG_FS_ENCRYPTION
/* Crypto operations for filesystems */
@@ -181,21 +184,20 @@ struct fscrypt_operations {
bool (*has_stable_inodes)(struct super_block *sb);
/*
- * Return an array of pointers to the block devices to which the
- * filesystem may write encrypted file contents, NULL if the filesystem
- * only has a single such block device, or an ERR_PTR() on error.
+ * Retrieve the list of block devices to which the filesystem may write
+ * encrypted file contents.
*
- * On successful non-NULL return, *num_devs is set to the number of
- * devices in the returned array. The caller must free the returned
- * array using kfree().
+ * This writes the block_device pointers to @devs and returns the count
+ * (between 1 and FSCRYPT_MAX_DEVICES inclusively).
*
* If the filesystem can use multiple block devices (other than block
* devices that aren't used for encrypted file contents, such as
* external journal devices), and wants to support inline encryption,
* then it must implement this function. Otherwise it's not needed.
*/
- struct block_device **(*get_devices)(struct super_block *sb,
- unsigned int *num_devs);
+ unsigned int (*get_devices)(
+ struct super_block *sb,
+ struct block_device *devs[FSCRYPT_MAX_DEVICES]);
};
int fscrypt_d_revalidate(struct inode *dir, const struct qstr *name,
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 604/675] drm/amd/display: Fix DTB DTO updates breaking live pixel rate sources
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (602 preceding siblings ...)
2026-07-30 14:15 ` [PATCH 6.18 603/675] fscrypt: Avoid dynamic allocation in fscrypt_get_devices() Greg Kroah-Hartman
@ 2026-07-30 14:15 ` Greg Kroah-Hartman
2026-07-30 14:15 ` [PATCH 6.18 605/675] landlock: Fix formatting Greg Kroah-Hartman
` (75 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:15 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Harry Wentland, Fangzhi Zuo,
Dan Wheeler, Alex Deucher, Matthew Schwartz, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Harry Wentland <harry.wentland@amd.com>
commit 76a2db58e95e328007043f54ac3c7336ccbee440 upstream.
dcn32_update_clocks_update_dtb_dto() and its dcn35 counterpart reprogram
the DTB DTO of every timing generator in the context whenever the DTBCLK
reference changes, passing a zeroed pixel rate and never setting
is_hdmi. Both dccg set_dtbclk_dto() implementations treat a zero pixel
rate as a disable request. On dcn32 that branch drives PIPE_DTO_SRC_SEL
to the DP DTO source, so a timing generator actively scanning out an
HDMI stream has its pixel rate source re-muxed out from under the live
raster and the OTG stops on the spot. On dcn35 it clears
DTBCLK_DTO_ENABLE and restores DTBCLK_Pn clock gating, which does the
same to a live 128b/132b stream.
Two displays where only one runs a 128b/132b link hit this reliably.
is_dtbclk_required() holds the DTBCLK reference high while both are
active, and the moment the 128b/132b stream is torn down (compositor
switch, display disable, hot-unplug) the next safe_to_lower pass drops
the reference to the lowest DPM level and the DTO walk freezes the
surviving screen. On Navi31 the DAL mailbox then goes deaf on the
DISPCLK hard-min that follows the walk in dcn32_update_clocks(),
stranding both SMU mailboxes until reboot.
Set is_hdmi for HDMI and DVI signals so the disable path leaves the
pixel rate source selection on the HDMI path, and pass the real pixel
rate for 128b/132b streams so a reference change rescales their DTO
instead of disabling it.
Fixes: 128c1ca0303f ("drm/amd/display: Update DTBCLK for DCN32")
Fixes: 8774029f76b9 ("drm/amd/display: Add DCN35 CLK_MGR")
Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Reviewed-by: Fangzhi Zuo <Jerry.Zuo@amd.com>
Tested-by: Dan Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
[ mschwartz: dcn32 and dcn35 clk_mgr hunks only. The rest is HDMI FRL
enablement, absent before 7.2, so the FRL conditions and the
req_audio_dtbclk_khz assignment they guard are dropped and the
FRL-centric changelog is rewritten. Added the pipe_ctx->stream check
the new dereferences need. ]
Signed-off-by: Matthew Schwartz <matthew.schwartz@linux.dev>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
.../gpu/drm/amd/display/dc/clk_mgr/dcn32/dcn32_clk_mgr.c | 9 ++++++++-
.../gpu/drm/amd/display/dc/clk_mgr/dcn35/dcn35_clk_mgr.c | 9 ++++++++-
2 files changed, 16 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn32/dcn32_clk_mgr.c b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn32/dcn32_clk_mgr.c
index 7da7b41bd09256..b98d946a8d2ee6 100644
--- a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn32/dcn32_clk_mgr.c
+++ b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn32/dcn32_clk_mgr.c
@@ -276,13 +276,20 @@ static void dcn32_update_clocks_update_dtb_dto(struct clk_mgr_internal *clk_mgr,
struct dtbclk_dto_params dto_params = {0};
/* use mask to program DTO once per tg */
- if (pipe_ctx->stream_res.tg &&
+ if (pipe_ctx->stream && pipe_ctx->stream_res.tg &&
!(tg_mask & (1 << pipe_ctx->stream_res.tg->inst))) {
tg_mask |= (1 << pipe_ctx->stream_res.tg->inst);
dto_params.otg_inst = pipe_ctx->stream_res.tg->inst;
dto_params.ref_dtbclk_khz = ref_dtbclk_khz;
+ if (dccg->ctx->dc->link_srv->dp_is_128b_132b_signal(pipe_ctx))
+ dto_params.pixclk_khz = pipe_ctx->stream->timing.pix_clk_100hz / 10;
+
+ if (dc_is_hdmi_signal(pipe_ctx->stream->signal) ||
+ dc_is_dvi_signal(pipe_ctx->stream->signal))
+ dto_params.is_hdmi = true;
+
dccg->funcs->set_dtbclk_dto(clk_mgr->dccg, &dto_params);
//dccg->funcs->set_audio_dtbclk_dto(clk_mgr->dccg, &dto_params);
}
diff --git a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn35/dcn35_clk_mgr.c b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn35/dcn35_clk_mgr.c
index 817a0253d10e52..d1785a5c7f85fd 100644
--- a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn35/dcn35_clk_mgr.c
+++ b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn35/dcn35_clk_mgr.c
@@ -264,13 +264,20 @@ static void dcn35_update_clocks_update_dtb_dto(struct clk_mgr_internal *clk_mgr,
struct dtbclk_dto_params dto_params = {0};
/* use mask to program DTO once per tg */
- if (pipe_ctx->stream_res.tg &&
+ if (pipe_ctx->stream && pipe_ctx->stream_res.tg &&
!(tg_mask & (1 << pipe_ctx->stream_res.tg->inst))) {
tg_mask |= (1 << pipe_ctx->stream_res.tg->inst);
dto_params.otg_inst = pipe_ctx->stream_res.tg->inst;
dto_params.ref_dtbclk_khz = ref_dtbclk_khz;
+ if (dccg->ctx->dc->link_srv->dp_is_128b_132b_signal(pipe_ctx))
+ dto_params.pixclk_khz = pipe_ctx->stream->timing.pix_clk_100hz / 10;
+
+ if (dc_is_hdmi_signal(pipe_ctx->stream->signal) ||
+ dc_is_dvi_signal(pipe_ctx->stream->signal))
+ dto_params.is_hdmi = true;
+
dccg->funcs->set_dtbclk_dto(clk_mgr->dccg, &dto_params);
//dccg->funcs->set_audio_dtbclk_dto(clk_mgr->dccg, &dto_params);
}
--
2.53.0
^ permalink raw reply related [flat|nested] 682+ messages in thread* [PATCH 6.18 605/675] landlock: Fix formatting
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (603 preceding siblings ...)
2026-07-30 14:15 ` [PATCH 6.18 604/675] drm/amd/display: Fix DTB DTO updates breaking live pixel rate sources Greg Kroah-Hartman
@ 2026-07-30 14:15 ` Greg Kroah-Hartman
2026-07-30 14:15 ` [PATCH 6.18 606/675] landlock: Account all audit data allocations to user space Greg Kroah-Hartman
` (74 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:15 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Günther Noack, Kees Cook,
Günther Noack, Mickaël Salaün, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Mickaël Salaün <mic@digikod.net>
[ Upstream commit 405ca72dc589dd746e5ee5378bb9d9ee7f844010 ]
Auto-format with clang-format -i security/landlock/*.[ch]
Cc: Günther Noack <gnoack@google.com>
Cc: Kees Cook <kees@kernel.org>
Fixes: 69050f8d6d07 ("treewide: Replace kmalloc with kmalloc_obj for non-scalar types")
Reviewed-by: Günther Noack <gnoack3000@gmail.com>
Link: https://lore.kernel.org/r/20260303173632.88040-1-mic@digikod.net
Signed-off-by: Mickaël Salaün <mic@digikod.net>
Stable-dep-of: b232bd12789f ("landlock: Account all audit data allocations to user space")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
security/landlock/domain.c | 3 +--
security/landlock/ruleset.c | 7 +++----
2 files changed, 4 insertions(+), 6 deletions(-)
--- a/security/landlock/domain.c
+++ b/security/landlock/domain.c
@@ -94,8 +94,7 @@ static struct landlock_details *get_curr
* allocate with GFP_KERNEL_ACCOUNT because it is independent from the
* caller.
*/
- details =
- kzalloc(struct_size(details, exe_path, path_size), GFP_KERNEL);
+ details = kzalloc_flex(*details, exe_path, path_size);
if (!details)
return ERR_PTR(-ENOMEM);
--- a/security/landlock/ruleset.c
+++ b/security/landlock/ruleset.c
@@ -33,9 +33,8 @@ static struct landlock_ruleset *create_r
{
struct landlock_ruleset *new_ruleset;
- new_ruleset =
- kzalloc(struct_size(new_ruleset, access_masks, num_layers),
- GFP_KERNEL_ACCOUNT);
+ new_ruleset = kzalloc_flex(*new_ruleset, access_masks, num_layers,
+ GFP_KERNEL_ACCOUNT);
if (!new_ruleset)
return ERR_PTR(-ENOMEM);
refcount_set(&new_ruleset->usage, 1);
@@ -553,7 +552,7 @@ landlock_merge_ruleset(struct landlock_r
return new_dom;
new_dom->hierarchy =
- kzalloc(sizeof(*new_dom->hierarchy), GFP_KERNEL_ACCOUNT);
+ kzalloc_obj(*new_dom->hierarchy, GFP_KERNEL_ACCOUNT);
if (!new_dom->hierarchy)
return ERR_PTR(-ENOMEM);
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 606/675] landlock: Account all audit data allocations to user space
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (604 preceding siblings ...)
2026-07-30 14:15 ` [PATCH 6.18 605/675] landlock: Fix formatting Greg Kroah-Hartman
@ 2026-07-30 14:15 ` Greg Kroah-Hartman
2026-07-30 14:15 ` [PATCH 6.18 607/675] audit: widen ino fields to u64 Greg Kroah-Hartman
` (73 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:15 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Günther Noack, Paul Moore,
Mickaël Salaün, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Mickaël Salaün <mic@digikod.net>
[ Upstream commit b232bd12789fa57405b5092f28788be97aae9999 ]
Mark the kzalloc_flex() of struct landlock_details with
GFP_KERNEL_ACCOUNT so the allocation is charged to the calling task,
like the other Landlock per-domain allocations which have used
GFP_KERNEL_ACCOUNT forever.
Every property of landlock_details is caller-attributable: allocated by
landlock_restrict_self(2), owned by the caller's landlock_hierarchy,
contents are the caller's pid, uid, comm, and exe_path, lifetime bounded
by the caller's domain. While the caller may not know nor control the
size of this allocation (i.e. exe_path), this data should still be
accounted for it.
The deciding factor is whether userspace can trigger the allocation, not
whether the size of the data is known nor controlled by the caller.
This aligns with the kmemcg accounting policy established by commit
5d097056c9a0 ("kmemcg: account certain kmem allocations to memcg").
No new failure modes: the hierarchy and ruleset are allocated before
details and are already accounted, so landlock_restrict_self(2) already
returns -ENOMEM under memcg pressure. This change widens that existing
failure window slightly; it does not introduce a new error code.
Cc: Günther Noack <gnoack@google.com>
Cc: Paul Moore <paul@paul-moore.com>
Cc: stable@vger.kernel.org
Fixes: 1d636984e088 ("landlock: Add AUDIT_LANDLOCK_DOMAIN and log domain status")
Link: https://patch.msgid.link/20260513180309.165840-1-mic@digikod.net
Signed-off-by: Mickaël Salaün <mic@digikod.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
security/landlock/domain.c | 9 +++++----
security/landlock/domain.h | 5 +----
2 files changed, 6 insertions(+), 8 deletions(-)
--- a/security/landlock/domain.c
+++ b/security/landlock/domain.c
@@ -90,11 +90,12 @@ static struct landlock_details *get_curr
return ERR_CAST(buffer);
/*
- * Create the new details according to the path's length. Do not
- * allocate with GFP_KERNEL_ACCOUNT because it is independent from the
- * caller.
+ * Create the new details according to the path's length. Account to
+ * the calling task's memcg, like the other Landlock per-domain
+ * allocations, even if it may not control the related size.
*/
- details = kzalloc_flex(*details, exe_path, path_size);
+ details =
+ kzalloc_flex(*details, exe_path, path_size, GFP_KERNEL_ACCOUNT);
if (!details)
return ERR_PTR(-ENOMEM);
--- a/security/landlock/domain.h
+++ b/security/landlock/domain.h
@@ -33,10 +33,7 @@ enum landlock_log_status {
* Rarely accessed, mainly when logging the first domain's denial.
*
* The contained pointers are initialized at the domain creation time and never
- * changed again. Contrary to most other Landlock object types, this one is
- * not allocated with GFP_KERNEL_ACCOUNT because its size may not be under the
- * caller's control (e.g. unknown exe_path) and the data is not explicitly
- * requested nor used by tasks.
+ * changed again.
*/
struct landlock_details {
/**
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 607/675] audit: widen ino fields to u64
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (605 preceding siblings ...)
2026-07-30 14:15 ` [PATCH 6.18 606/675] landlock: Account all audit data allocations to user space Greg Kroah-Hartman
@ 2026-07-30 14:15 ` Greg Kroah-Hartman
2026-07-30 14:15 ` [PATCH 6.18 608/675] audit: use unsigned int instead of unsigned Greg Kroah-Hartman
` (72 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:15 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Jeff Layton, Paul Moore,
Christian Brauner, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jeff Layton <jlayton@kernel.org>
[ Upstream commit 125dfa218134df7cc112667e92984de9d8cd0bf6 ]
inode->i_ino is being widened from unsigned long to u64. The audit
subsystem uses unsigned long ino in struct fields, function parameters,
and local variables that store inode numbers from arbitrary filesystems.
On 32-bit platforms this truncates inode numbers that exceed 32 bits,
which will cause incorrect audit log entries and broken watch/mark
comparisons.
Widen all audit ino fields, parameters, and locals to u64, and update
the inode format string from %lu to %llu to match.
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Link: https://patch.msgid.link/20260304-iino-u64-v3-2-2257ad83d372@kernel.org
Acked-by: Paul Moore <paul@paul-moore.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>
Stable-dep-of: 81905b5acbe7 ("audit: fix recursive locking deadlock in audit_dupe_exe()")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
include/linux/audit.h | 2 +-
kernel/audit.h | 13 ++++++-------
kernel/audit_fsnotify.c | 4 ++--
kernel/audit_watch.c | 12 ++++++------
kernel/auditsc.c | 4 ++--
5 files changed, 17 insertions(+), 18 deletions(-)
--- a/include/linux/audit.h
+++ b/include/linux/audit.h
@@ -16,7 +16,7 @@
#include <uapi/linux/netfilter/nf_tables.h>
#include <uapi/linux/fanotify.h>
-#define AUDIT_INO_UNSET ((unsigned long)-1)
+#define AUDIT_INO_UNSET ((u64)-1)
#define AUDIT_DEV_UNSET ((dev_t)-1)
struct audit_sig_info {
--- a/kernel/audit.h
+++ b/kernel/audit.h
@@ -76,7 +76,7 @@ struct audit_names {
int name_len; /* number of chars to log */
bool hidden; /* don't log this record */
- unsigned long ino;
+ u64 ino;
dev_t dev;
umode_t mode;
kuid_t uid;
@@ -225,9 +225,9 @@ extern int auditd_test_task(struct task_
#define AUDIT_INODE_BUCKETS 32
extern struct list_head audit_inode_hash[AUDIT_INODE_BUCKETS];
-static inline int audit_hash_ino(u32 ino)
+static inline int audit_hash_ino(u64 ino)
{
- return (ino & (AUDIT_INODE_BUCKETS-1));
+ return ((u32)ino & (AUDIT_INODE_BUCKETS-1));
}
/* Indicates that audit should log the full pathname. */
@@ -277,16 +277,15 @@ extern int audit_to_watch(struct audit_k
extern int audit_add_watch(struct audit_krule *krule, struct list_head **list);
extern void audit_remove_watch_rule(struct audit_krule *krule);
extern char *audit_watch_path(struct audit_watch *watch);
-extern int audit_watch_compare(struct audit_watch *watch, unsigned long ino,
- dev_t dev);
+extern int audit_watch_compare(struct audit_watch *watch, u64 ino, dev_t dev);
extern struct audit_fsnotify_mark *audit_alloc_mark(struct audit_krule *krule,
char *pathname, int len);
extern char *audit_mark_path(struct audit_fsnotify_mark *mark);
extern void audit_remove_mark(struct audit_fsnotify_mark *audit_mark);
extern void audit_remove_mark_rule(struct audit_krule *krule);
-extern int audit_mark_compare(struct audit_fsnotify_mark *mark,
- unsigned long ino, dev_t dev);
+extern int audit_mark_compare(struct audit_fsnotify_mark *mark, u64 ino,
+ dev_t dev);
extern int audit_dupe_exe(struct audit_krule *new, struct audit_krule *old);
extern int audit_exe_compare(struct task_struct *tsk,
struct audit_fsnotify_mark *mark);
--- a/kernel/audit_fsnotify.c
+++ b/kernel/audit_fsnotify.c
@@ -25,7 +25,7 @@
*/
struct audit_fsnotify_mark {
dev_t dev; /* associated superblock device */
- unsigned long ino; /* associated inode number */
+ u64 ino; /* associated inode number */
char *path; /* insertion path */
struct fsnotify_mark mark; /* fsnotify mark on the inode */
struct audit_krule *rule;
@@ -57,7 +57,7 @@ char *audit_mark_path(struct audit_fsnot
return mark->path;
}
-int audit_mark_compare(struct audit_fsnotify_mark *mark, unsigned long ino, dev_t dev)
+int audit_mark_compare(struct audit_fsnotify_mark *mark, u64 ino, dev_t dev)
{
if (mark->ino == AUDIT_INO_UNSET)
return 0;
--- a/kernel/audit_watch.c
+++ b/kernel/audit_watch.c
@@ -37,7 +37,7 @@ struct audit_watch {
refcount_t count; /* reference count */
dev_t dev; /* associated superblock device */
char *path; /* insertion path */
- unsigned long ino; /* associated inode number */
+ u64 ino; /* associated inode number */
struct audit_parent *parent; /* associated parent */
struct list_head wlist; /* entry in parent->watches list */
struct list_head rules; /* anchor for krule->rlist */
@@ -125,7 +125,7 @@ char *audit_watch_path(struct audit_watc
return watch->path;
}
-int audit_watch_compare(struct audit_watch *watch, unsigned long ino, dev_t dev)
+int audit_watch_compare(struct audit_watch *watch, u64 ino, dev_t dev)
{
return (watch->ino != AUDIT_INO_UNSET) &&
(watch->ino == ino) &&
@@ -244,7 +244,7 @@ static void audit_watch_log_rule_change(
/* Update inode info in audit rules based on filesystem event. */
static void audit_update_watch(struct audit_parent *parent,
const struct qstr *dname, dev_t dev,
- unsigned long ino, unsigned invalidating)
+ u64 ino, unsigned invalidating)
{
struct audit_watch *owatch, *nwatch, *nextw;
struct audit_krule *r, *nextr;
@@ -285,7 +285,7 @@ static void audit_update_watch(struct au
list_del(&oentry->rule.list);
audit_panic("error updating watch, removing");
} else {
- int h = audit_hash_ino((u32)ino);
+ int h = audit_hash_ino(ino);
/*
* nentry->rule.watch == oentry->rule.watch so
@@ -439,7 +439,7 @@ int audit_add_watch(struct audit_krule *
audit_add_to_parent(krule, parent);
- h = audit_hash_ino((u32)watch->ino);
+ h = audit_hash_ino(watch->ino);
*list = &audit_inode_hash[h];
error:
path_put(&parent_path);
@@ -527,7 +527,7 @@ int audit_dupe_exe(struct audit_krule *n
int audit_exe_compare(struct task_struct *tsk, struct audit_fsnotify_mark *mark)
{
struct file *exe_file;
- unsigned long ino;
+ u64 ino;
dev_t dev;
/* only do exe filtering if we are recording @current events/records */
--- a/kernel/auditsc.c
+++ b/kernel/auditsc.c
@@ -886,7 +886,7 @@ static int audit_filter_inode_name(struc
struct audit_names *n,
struct audit_context *ctx)
{
- int h = audit_hash_ino((u32)n->ino);
+ int h = audit_hash_ino(n->ino);
struct list_head *list = &audit_inode_hash[h];
return __audit_filter_op(tsk, ctx, list, n, ctx->major);
@@ -1534,7 +1534,7 @@ static void audit_log_name(struct audit_
audit_log_format(ab, " name=(null)");
if (n->ino != AUDIT_INO_UNSET)
- audit_log_format(ab, " inode=%lu dev=%02x:%02x mode=%#ho ouid=%u ogid=%u rdev=%02x:%02x",
+ audit_log_format(ab, " inode=%llu dev=%02x:%02x mode=%#ho ouid=%u ogid=%u rdev=%02x:%02x",
n->ino,
MAJOR(n->dev),
MINOR(n->dev),
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 608/675] audit: use unsigned int instead of unsigned
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (606 preceding siblings ...)
2026-07-30 14:15 ` [PATCH 6.18 607/675] audit: widen ino fields to u64 Greg Kroah-Hartman
@ 2026-07-30 14:15 ` Greg Kroah-Hartman
2026-07-30 14:15 ` [PATCH 6.18 609/675] audit: fix recursive locking deadlock in audit_dupe_exe() Greg Kroah-Hartman
` (71 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:15 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Ricardo Robaina, Paul Moore,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Ricardo Robaina <rrobaina@redhat.com>
[ Upstream commit 8b226771014beab1292081151a99530886ce54b4 ]
Address checkpatch.pl warning below, across the audit subsystem:
WARNING: Prefer 'unsigned int' to bare use of 'unsigned'
Minor cleanup, no functional changes.
Signed-off-by: Ricardo Robaina <rrobaina@redhat.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
Stable-dep-of: 81905b5acbe7 ("audit: fix recursive locking deadlock in audit_dupe_exe()")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
include/linux/audit.h | 4 ++--
include/linux/audit_arch.h | 12 ++++++------
kernel/audit.c | 2 +-
kernel/audit.h | 2 +-
kernel/audit_tree.c | 2 +-
kernel/audit_watch.c | 2 +-
kernel/auditfilter.c | 8 ++++----
kernel/auditsc.c | 2 +-
lib/compat_audit.c | 12 ++++++------
9 files changed, 23 insertions(+), 23 deletions(-)
--- a/include/linux/audit.h
+++ b/include/linux/audit.h
@@ -125,8 +125,8 @@ enum audit_nfcfgop {
AUDIT_NFT_OP_INVALID,
};
-extern int __init audit_register_class(int class, unsigned *list);
-extern int audit_classify_syscall(int abi, unsigned syscall);
+extern int __init audit_register_class(int class, unsigned int *list);
+extern int audit_classify_syscall(int abi, unsigned int syscall);
extern int audit_classify_arch(int arch);
/* audit_names->type values */
--- a/include/linux/audit_arch.h
+++ b/include/linux/audit_arch.h
@@ -21,13 +21,13 @@ enum auditsc_class_t {
AUDITSC_NVALS /* count */
};
-extern int audit_classify_compat_syscall(int abi, unsigned syscall);
+extern int audit_classify_compat_syscall(int abi, unsigned int syscall);
/* only for compat system calls */
-extern unsigned compat_write_class[];
-extern unsigned compat_read_class[];
-extern unsigned compat_dir_class[];
-extern unsigned compat_chattr_class[];
-extern unsigned compat_signal_class[];
+extern unsigned int compat_write_class[];
+extern unsigned int compat_read_class[];
+extern unsigned int compat_dir_class[];
+extern unsigned int compat_chattr_class[];
+extern unsigned int compat_signal_class[];
#endif
--- a/kernel/audit.c
+++ b/kernel/audit.c
@@ -2030,7 +2030,7 @@ void audit_log_vformat(struct audit_buff
* here and AUDIT_BUFSIZ is at least 1024, then we can
* log everything that printk could have logged. */
avail = audit_expand(ab,
- max_t(unsigned, AUDIT_BUFSIZ, 1+len-avail));
+ max_t(unsigned int, AUDIT_BUFSIZ, 1+len-avail));
if (!avail)
goto out_va_end;
len = vsnprintf(skb_tail_pointer(skb), avail, fmt, args2);
--- a/kernel/audit.h
+++ b/kernel/audit.h
@@ -233,7 +233,7 @@ static inline int audit_hash_ino(u64 ino
/* Indicates that audit should log the full pathname. */
#define AUDIT_NAME_FULL -1
-extern int audit_match_class(int class, unsigned syscall);
+extern int audit_match_class(int class, unsigned int syscall);
extern int audit_comparator(const u32 left, const u32 op, const u32 right);
extern int audit_uid_comparator(kuid_t left, u32 op, kuid_t right);
extern int audit_gid_comparator(kgid_t left, u32 op, kgid_t right);
--- a/kernel/audit_tree.c
+++ b/kernel/audit_tree.c
@@ -33,7 +33,7 @@ struct audit_chunk {
struct audit_node {
struct list_head list;
struct audit_tree *owner;
- unsigned index; /* index; upper bit indicates 'will prune' */
+ unsigned int index; /* index; upper bit indicates 'will prune' */
} owners[] __counted_by(count);
};
--- a/kernel/audit_watch.c
+++ b/kernel/audit_watch.c
@@ -244,7 +244,7 @@ static void audit_watch_log_rule_change(
/* Update inode info in audit rules based on filesystem event. */
static void audit_update_watch(struct audit_parent *parent,
const struct qstr *dname, dev_t dev,
- u64 ino, unsigned invalidating)
+ u64 ino, unsigned int invalidating)
{
struct audit_watch *owatch, *nwatch, *nextw;
struct audit_krule *r, *nextr;
--- a/kernel/auditfilter.c
+++ b/kernel/auditfilter.c
@@ -165,13 +165,13 @@ static inline int audit_to_inode(struct
static __u32 *classes[AUDIT_SYSCALL_CLASSES];
-int __init audit_register_class(int class, unsigned *list)
+int __init audit_register_class(int class, unsigned int *list)
{
__u32 *p = kcalloc(AUDIT_BITMASK_SIZE, sizeof(__u32), GFP_KERNEL);
if (!p)
return -ENOMEM;
while (*list != ~0U) {
- unsigned n = *list++;
+ unsigned int n = *list++;
if (n >= AUDIT_BITMASK_SIZE * 32 - AUDIT_SYSCALL_CLASSES) {
kfree(p);
return -EINVAL;
@@ -186,7 +186,7 @@ int __init audit_register_class(int clas
return 0;
}
-int audit_match_class(int class, unsigned syscall)
+int audit_match_class(int class, unsigned int syscall)
{
if (unlikely(syscall >= AUDIT_BITMASK_SIZE * 32))
return 0;
@@ -237,7 +237,7 @@ static int audit_match_signal(struct aud
/* Common user-space to kernel rule translation. */
static inline struct audit_entry *audit_to_entry_common(struct audit_rule_data *rule)
{
- unsigned listnr;
+ unsigned int listnr;
struct audit_entry *entry;
int i, err;
--- a/kernel/auditsc.c
+++ b/kernel/auditsc.c
@@ -150,7 +150,7 @@ static const struct audit_nfcfgop_tab au
static int audit_match_perm(struct audit_context *ctx, int mask)
{
- unsigned n;
+ unsigned int n;
if (unlikely(!ctx))
return 0;
--- a/lib/compat_audit.c
+++ b/lib/compat_audit.c
@@ -4,32 +4,32 @@
#include <linux/audit_arch.h>
#include <asm/unistd32.h>
-unsigned compat_dir_class[] = {
+unsigned int compat_dir_class[] = {
#include <asm-generic/audit_dir_write.h>
~0U
};
-unsigned compat_read_class[] = {
+unsigned int compat_read_class[] = {
#include <asm-generic/audit_read.h>
~0U
};
-unsigned compat_write_class[] = {
+unsigned int compat_write_class[] = {
#include <asm-generic/audit_write.h>
~0U
};
-unsigned compat_chattr_class[] = {
+unsigned int compat_chattr_class[] = {
#include <asm-generic/audit_change_attr.h>
~0U
};
-unsigned compat_signal_class[] = {
+unsigned int compat_signal_class[] = {
#include <asm-generic/audit_signal.h>
~0U
};
-int audit_classify_compat_syscall(int abi, unsigned syscall)
+int audit_classify_compat_syscall(int abi, unsigned int syscall)
{
switch (syscall) {
#ifdef __NR_open
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 609/675] audit: fix recursive locking deadlock in audit_dupe_exe()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (607 preceding siblings ...)
2026-07-30 14:15 ` [PATCH 6.18 608/675] audit: use unsigned int instead of unsigned Greg Kroah-Hartman
@ 2026-07-30 14:15 ` Greg Kroah-Hartman
2026-07-30 14:15 ` [PATCH 6.18 610/675] fuse-uring: fix race between registration and connection abortion Greg Kroah-Hartman
` (70 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:15 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, stable, Waiman Long,
Richard Guy Briggs, Nathan Chancellor, Ricardo Robaina,
Paul Moore, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Ricardo Robaina <rrobaina@redhat.com>
[ Upstream commit 81905b5acbe77284734438df3fbec1158e6429a3 ]
A deadlock occurs in the audit subsystem when duplicating
executable-related rules.
When a file is moved (e.g., via do_renameat2()), the VFS layer locks
the parent directory (I_MUTEX_PARENT), which synchronously triggers an
fsnotify_move event. If an existing executable audit rule matches the
file being moved, the audit subsystem catches this event and calls
audit_dupe_exe() to duplicate the watch and update the rule. Then,
audit_alloc_mark() would call kern_path_parent() to resolve the path,
leading to a blind attempt to acquire the exact same I_MUTEX_PARENT lock
already held by the task, resulting in the following recursive locking
deadlock:
============================================
WARNING: possible recursive locking detected
6.12.0-55.27.1.el10_0.x86_64+debug #1 Not tainted
--------------------------------------------
mv/5099 is trying to acquire lock:
ffff888132845358 (&inode->i_sb->s_type->i_mutex_dir_key/1){+.+.}-{3:3},
at: __kern_path_locked+0x10a/0x2f0
but task is already holding lock:
ffff888132846b58 (&inode->i_sb->s_type->i_mutex_dir_key/1){+.+.}-{3:3},
at: lock_two_directories+0x13f/0x2b0
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0
----
lock(&inode->i_sb->s_type->i_mutex_dir_key/1);
lock(&inode->i_sb->s_type->i_mutex_dir_key/1);
*** DEADLOCK ***
May be due to missing lock nesting notation
6 locks held by mv/5099:
#0: ffff888112a9c440 (sb_writers#13)
at: do_renameat2+0x34c/0xbc0
#1: ffff888112a9c790 (&type->s_vfs_rename_key#3)
at: do_renameat2+0x415/0xbc0
#2: ffff888132846b58 (&inode->i_sb->s_type->i_mutex_dir_key/1)
at: lock_two_directories+0x13f/0x2b0
#3: ffff888132845358 (&inode->i_sb->s_type->i_mutex_dir_key/5)
at: lock_two_directories+0x175/0x2b0
#4: ffffffffb3a1fb10 (&fsnotify_mark_srcu)
at: fsnotify+0x454/0x28a0
#5: ffffffffaf886230 (audit_filter_mutex)
at: audit_update_watch+0x36/0x11e0
stack backtrace:
Call Trace:
<TASK>
dump_stack_lvl+0x6f/0xb0
print_deadlock_bug.cold+0xbd/0xca
validate_chain+0x83a/0xf00
__lock_acquire+0xcac/0x1d20
lock_acquire.part.0+0x11b/0x360
down_write_nested+0x9f/0x230
__kern_path_locked+0x10a/0x2f0
kern_path_locked+0x26/0x40
audit_alloc_mark+0xfb/0x4f0
audit_dupe_exe+0x6c/0xe0
audit_dupe_rule+0x6c2/0xc00
audit_update_watch+0x4cc/0x11e0
audit_watch_handle_event+0x12c/0x1b0
send_to_group+0x5d0/0x8b0
fsnotify+0x615/0x28a0
fsnotify_move+0x1d8/0x630
vfs_rename+0xdcd/0x1df0
do_renameat2+0x9d4/0xbc0
__x64_sys_renameat+0x192/0x260
do_syscall_64+0x92/0x180
entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f0491fe8c4e
Code: 0f 1f 40 00 48 8b 15 c1 e1 16 00 f7 d8 64 89 02 b8 ff ff ff ff
c3 66 0f 1f 44 00 00 f3 0f 1e fa 49 89 ca b8 08 01 00 00 0f 05 <48>
3d 00 f0 ff ff 77 0a c3 66 0f 1f 84 00 00 00 00 00 48 8b 15 89
RSP: 002b:00007ffc7210bf38 EFLAGS: 00000246 ORIG_RAX: 0000000000000108
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0491fe8c4e
RDX: 0000000000000003 RSI: 00007ffc7210e6c8 RDI: 00000000ffffff9c
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000001
R10: 00005575eb2dae2a R11: 0000000000000246 R12: 00005575eb2dae2a
R13: 00007ffc7210e6c8 R14: 0000000000000003 R15: 00000000ffffff9c
</TASK>
The aforementioned deadlock can be consistently reproduced by running
the script below:
audit-dupe-exe-deadlock.sh
--------------------------
#!/bin/bash
auditctl -D
mkdir -p /tmp/foo
touch /tmp/file
auditctl -a always,exit -F exe=/tmp/file -F path=/tmp/file -S all -k dr
mv /tmp/file /tmp/foo/file
rm -Rf /tmp/foo
This patch fixes the issue by introducing struct audit_watch_ctx to pass
the fsnotify event context down to audit_alloc_mark(). By utilizing the
already-resolved directory inode provided by the event, we bypass the
kern_path_parent() path resolution entirely, safely avoiding the
recursive lock. Furthermore, it explicitly allows duplicate fsnotify
marks (allow_dups = 1) during the rename update, allowing the new rule's
mark to safely coexist with the old rule's mark until the old rule is
freed.
P.S.: This issue was identified and reproduced during a comprehensive
code coverage analysis of the audit subsystem. The full report is
available at the link below:
https://people.redhat.com/rrobaina/audit-code-coverage-analysis.pdf
P.P.S: With the permission of both Ricardo and Nathan, I've squashed a
fixup patch from Nathan that addresses a compile time error when
CONFIG_AUDITSYSCALL=n.
Cc: stable@kernel.org
Fixes: 34d99af52ad4 ("audit: implement audit by executable")
Acked-by: Waiman Long <longman@redhat.com>
Acked-by: Richard Guy Briggs <rgb@redhat.com>
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Ricardo Robaina <rrobaina@redhat.com>
[PM: move link metadata into the msg, apply fix from NC]
Signed-off-by: Paul Moore <paul@paul-moore.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
kernel/audit.h | 17 ++++++++++++-----
kernel/audit_fsnotify.c | 32 +++++++++++++++++++++++---------
kernel/audit_watch.c | 25 +++++++++++++++++--------
kernel/auditfilter.c | 9 +++++----
4 files changed, 57 insertions(+), 26 deletions(-)
--- a/kernel/audit.h
+++ b/kernel/audit.h
@@ -256,8 +256,13 @@ extern int audit_del_rule(struct audit_e
extern void audit_free_rule_rcu(struct rcu_head *head);
extern struct list_head audit_filter_list[];
-extern struct audit_entry *audit_dupe_rule(struct audit_krule *old);
+struct audit_watch_ctx {
+ struct inode *dir;
+ struct inode *child;
+};
+extern struct audit_entry *audit_dupe_rule(struct audit_krule *old,
+ struct audit_watch_ctx *ctx);
extern void audit_log_d_path_exe(struct audit_buffer *ab,
struct mm_struct *mm);
@@ -280,13 +285,15 @@ extern char *audit_watch_path(struct aud
extern int audit_watch_compare(struct audit_watch *watch, u64 ino, dev_t dev);
extern struct audit_fsnotify_mark *audit_alloc_mark(struct audit_krule *krule,
- char *pathname, int len);
+ char *pathname, int len,
+ struct audit_watch_ctx *ctx);
extern char *audit_mark_path(struct audit_fsnotify_mark *mark);
extern void audit_remove_mark(struct audit_fsnotify_mark *audit_mark);
extern void audit_remove_mark_rule(struct audit_krule *krule);
extern int audit_mark_compare(struct audit_fsnotify_mark *mark, u64 ino,
dev_t dev);
-extern int audit_dupe_exe(struct audit_krule *new, struct audit_krule *old);
+extern int audit_dupe_exe(struct audit_krule *new, struct audit_krule *old,
+ struct audit_watch_ctx *ctx);
extern int audit_exe_compare(struct task_struct *tsk,
struct audit_fsnotify_mark *mark);
@@ -317,13 +324,13 @@ extern struct list_head *audit_killed_tr
#define audit_watch_path(w) ""
#define audit_watch_compare(w, i, d) 0
-#define audit_alloc_mark(k, p, l) (ERR_PTR(-EINVAL))
+#define audit_alloc_mark(k, p, l, c) (ERR_PTR(-EINVAL))
#define audit_mark_path(m) ""
#define audit_remove_mark(m) do { } while (0)
#define audit_remove_mark_rule(k) do { } while (0)
#define audit_mark_compare(m, i, d) 0
#define audit_exe_compare(t, m) (-EINVAL)
-#define audit_dupe_exe(n, o) (-EINVAL)
+#define audit_dupe_exe(n, o, c) (-EINVAL)
#define audit_remove_tree_rule(rule) BUG()
#define audit_add_tree_rule(rule) -EINVAL
--- a/kernel/audit_fsnotify.c
+++ b/kernel/audit_fsnotify.c
@@ -71,19 +71,30 @@ static void audit_update_mark(struct aud
audit_mark->ino = inode ? inode->i_ino : AUDIT_INO_UNSET;
}
-struct audit_fsnotify_mark *audit_alloc_mark(struct audit_krule *krule, char *pathname, int len)
+struct audit_fsnotify_mark *audit_alloc_mark(struct audit_krule *krule, char *pathname,
+ int len, struct audit_watch_ctx *ctx)
{
struct audit_fsnotify_mark *audit_mark;
struct path path;
struct dentry *dentry;
- int ret;
+ struct inode *dir, *child;
+ int ret, allow_dups;
if (pathname[0] != '/' || pathname[len-1] == '/')
return ERR_PTR(-EINVAL);
- dentry = kern_path_parent(pathname, &path);
- if (IS_ERR(dentry))
- return ERR_CAST(dentry); /* returning an error */
+ if (!ctx) {
+ dentry = kern_path_parent(pathname, &path);
+ if (IS_ERR(dentry))
+ return ERR_CAST(dentry); /* returning an error */
+ dir = d_inode(path.dentry);
+ child = d_inode(dentry);
+ allow_dups = 0;
+ } else {
+ dir = ctx->dir;
+ child = ctx->child;
+ allow_dups = 1;
+ }
audit_mark = kzalloc(sizeof(*audit_mark), GFP_KERNEL);
if (unlikely(!audit_mark)) {
@@ -94,18 +105,21 @@ struct audit_fsnotify_mark *audit_alloc_
fsnotify_init_mark(&audit_mark->mark, audit_fsnotify_group);
audit_mark->mark.mask = AUDIT_FS_EVENTS;
audit_mark->path = pathname;
- audit_update_mark(audit_mark, dentry->d_inode);
audit_mark->rule = krule;
- ret = fsnotify_add_inode_mark(&audit_mark->mark, path.dentry->d_inode, 0);
+ audit_update_mark(audit_mark, child);
+ ret = fsnotify_add_inode_mark(&audit_mark->mark, dir, allow_dups);
+
if (ret < 0) {
audit_mark->path = NULL;
fsnotify_put_mark(&audit_mark->mark);
audit_mark = ERR_PTR(ret);
}
out:
- dput(dentry);
- path_put(&path);
+ if (!ctx) {
+ dput(dentry);
+ path_put(&path);
+ }
return audit_mark;
}
--- a/kernel/audit_watch.c
+++ b/kernel/audit_watch.c
@@ -244,7 +244,8 @@ static void audit_watch_log_rule_change(
/* Update inode info in audit rules based on filesystem event. */
static void audit_update_watch(struct audit_parent *parent,
const struct qstr *dname, dev_t dev,
- u64 ino, unsigned int invalidating)
+ u64 ino, unsigned int invalidating,
+ struct audit_watch_ctx *ctx)
{
struct audit_watch *owatch, *nwatch, *nextw;
struct audit_krule *r, *nextr;
@@ -280,7 +281,7 @@ static void audit_update_watch(struct au
list_del(&oentry->rule.rlist);
list_del_rcu(&oentry->list);
- nentry = audit_dupe_rule(&oentry->rule);
+ nentry = audit_dupe_rule(&oentry->rule, ctx);
if (IS_ERR(nentry)) {
list_del(&oentry->rule.list);
audit_panic("error updating watch, removing");
@@ -479,10 +480,17 @@ static int audit_watch_handle_event(stru
if (WARN_ON_ONCE(inode_mark->group != audit_watch_group))
return 0;
- if (mask & (FS_CREATE|FS_MOVED_TO) && inode)
- audit_update_watch(parent, dname, inode->i_sb->s_dev, inode->i_ino, 0);
- else if (mask & (FS_DELETE|FS_MOVED_FROM))
- audit_update_watch(parent, dname, AUDIT_DEV_UNSET, AUDIT_INO_UNSET, 1);
+ if (mask & (FS_CREATE|FS_MOVED_TO) && inode) {
+ struct audit_watch_ctx ctx = { .dir = dir, .child = inode };
+
+ audit_update_watch(parent, dname, inode->i_sb->s_dev, inode->i_ino, 0,
+ &ctx);
+ } else if (mask & (FS_DELETE|FS_MOVED_FROM)) {
+ struct audit_watch_ctx ctx = { .dir = dir, .child = NULL };
+
+ audit_update_watch(parent, dname, AUDIT_DEV_UNSET, AUDIT_INO_UNSET, 1,
+ &ctx);
+ }
else if (mask & (FS_DELETE_SELF|FS_UNMOUNT|FS_MOVE_SELF))
audit_remove_parent_watches(parent);
@@ -505,7 +513,8 @@ static int __init audit_watch_init(void)
}
device_initcall(audit_watch_init);
-int audit_dupe_exe(struct audit_krule *new, struct audit_krule *old)
+int audit_dupe_exe(struct audit_krule *new, struct audit_krule *old,
+ struct audit_watch_ctx *ctx)
{
struct audit_fsnotify_mark *audit_mark;
char *pathname;
@@ -514,7 +523,7 @@ int audit_dupe_exe(struct audit_krule *n
if (!pathname)
return -ENOMEM;
- audit_mark = audit_alloc_mark(new, pathname, strlen(pathname));
+ audit_mark = audit_alloc_mark(new, pathname, strlen(pathname), ctx);
if (IS_ERR(audit_mark)) {
kfree(pathname);
return PTR_ERR(audit_mark);
--- a/kernel/auditfilter.c
+++ b/kernel/auditfilter.c
@@ -590,7 +590,7 @@ static struct audit_entry *audit_data_to
err = PTR_ERR(str);
goto exit_free;
}
- audit_mark = audit_alloc_mark(&entry->rule, str, f_val);
+ audit_mark = audit_alloc_mark(&entry->rule, str, f_val, NULL);
if (IS_ERR(audit_mark)) {
kfree(str);
err = PTR_ERR(audit_mark);
@@ -818,7 +818,8 @@ static inline int audit_dupe_lsm_field(s
* rule with the new rule in the filterlist, then free the old rule.
* The rlist element is undefined; list manipulations are handled apart from
* the initial copy. */
-struct audit_entry *audit_dupe_rule(struct audit_krule *old)
+struct audit_entry *audit_dupe_rule(struct audit_krule *old,
+ struct audit_watch_ctx *ctx)
{
u32 fcount = old->field_count;
struct audit_entry *entry;
@@ -877,7 +878,7 @@ struct audit_entry *audit_dupe_rule(stru
new->filterkey = fk;
break;
case AUDIT_EXE:
- err = audit_dupe_exe(new, old);
+ err = audit_dupe_exe(new, old, ctx);
break;
}
if (err) {
@@ -1416,7 +1417,7 @@ static int update_lsm_rule(struct audit_
if (!security_audit_rule_known(r))
return 0;
- nentry = audit_dupe_rule(r);
+ nentry = audit_dupe_rule(r, NULL);
if (entry->rule.exe)
audit_remove_mark(entry->rule.exe);
if (IS_ERR(nentry)) {
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 610/675] fuse-uring: fix race between registration and connection abortion
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (608 preceding siblings ...)
2026-07-30 14:15 ` [PATCH 6.18 609/675] audit: fix recursive locking deadlock in audit_dupe_exe() Greg Kroah-Hartman
@ 2026-07-30 14:15 ` Greg Kroah-Hartman
2026-07-30 14:15 ` [PATCH 6.18 611/675] xfs: dont replace the wrong part of the cow fork Greg Kroah-Hartman
` (69 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:15 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Bernd Schubert, Joanne Koong,
Miklos Szeredi, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Joanne Koong <joannelkoong@gmail.com>
[ Upstream commit 952b5d36f6a298f57c52a59e72076c69386a8aaf ]
This fixes this race:
- thread a: io_uring_enter -> register sqe ->
fuse_uring_create_ring_ent -> allocate ent but doesn't grab queue_ref
yet
- thread b: fuse_conn_destroy() -> fuse_chan_abort() ->
fuse_uring_abort() is a no-op due to queue ref being 0
- thread a: grabs the queue_ref, queue_ref is now 1, rest of
fuse_uring_do_register() logic executes
- thread b: fuse_chan_abort() returns, fuse_chan_wait_aborted() now runs
and calls
"wait_event(ring->stop_waitq, atomic_read(&ring->queue_refs) == 0);"
The abort/unmount thread will hang indefinitely in unkillable state as
nothing will decrement queue_refs or wake stop_waitq, and the ring,
queue, and ent are leaked.
Fix this by checking fch->connected under fch->lock after the created
ent has grabbed a ref count on the queue. This ensures that in the
scenario above, it is guaranteed that we either release the queue ref
and wake up stop_waitq (in case fuse_chan_wait_aborted() is already
waiting) in fuse_uring_do_register() when we detect !fch->connected, or
if the connection is aborted after the check, it is guaranteed that the
async teardown worker will be running in the background cleaning up ents
and decrementing the ent's ref on the queue, which will unblock the
eventual queue and ring teardown.
Fixes: 24fe962c86f5 ("fuse: {io-uring} Handle SQEs - register commands")
Cc: stable@vger.kernel.org
Reviewed-by: Bernd Schubert <bernd@bsbernd.com>
Signed-off-by: Joanne Koong <joannelkoong@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
[ changed fch->lock/fch->connected references to fc->lock/fc->connected since struct fuse_chan does not exist in this tree ]
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/fuse/dev_uring.c | 22 ++++++++++++++++------
1 file changed, 16 insertions(+), 6 deletions(-)
--- a/fs/fuse/dev_uring.c
+++ b/fs/fuse/dev_uring.c
@@ -998,15 +998,26 @@ static bool is_ring_ready(struct fuse_ri
/*
* fuse_uring_req_fetch command handling
*/
-static void fuse_uring_do_register(struct fuse_ring_ent *ent,
- struct io_uring_cmd *cmd,
- unsigned int issue_flags)
+static int fuse_uring_do_register(struct fuse_ring_ent *ent,
+ struct io_uring_cmd *cmd,
+ unsigned int issue_flags)
{
struct fuse_ring_queue *queue = ent->queue;
struct fuse_ring *ring = queue->ring;
struct fuse_conn *fc = ring->fc;
struct fuse_iqueue *fiq = &fc->iq;
+ spin_lock(&fc->lock);
+ /* abort teardown path is running or has run */
+ if (!fc->connected) {
+ spin_unlock(&fc->lock);
+ if (atomic_dec_and_test(&ring->queue_refs))
+ wake_up_all(&ring->stop_waitq);
+ kfree(ent);
+ return -ECONNABORTED;
+ }
+ spin_unlock(&fc->lock);
+
fuse_uring_prepare_cancel(cmd, issue_flags, ent);
spin_lock(&queue->lock);
@@ -1023,6 +1034,7 @@ static void fuse_uring_do_register(struc
wake_up_all(&fc->blocked_waitq);
}
}
+ return 0;
}
/*
@@ -1138,9 +1150,7 @@ static int fuse_uring_register(struct io
if (IS_ERR(ent))
return PTR_ERR(ent);
- fuse_uring_do_register(ent, cmd, issue_flags);
-
- return 0;
+ return fuse_uring_do_register(ent, cmd, issue_flags);
}
/*
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 611/675] xfs: dont replace the wrong part of the cow fork
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (609 preceding siblings ...)
2026-07-30 14:15 ` [PATCH 6.18 610/675] fuse-uring: fix race between registration and connection abortion Greg Kroah-Hartman
@ 2026-07-30 14:15 ` Greg Kroah-Hartman
2026-07-30 14:15 ` [PATCH 6.18 612/675] vduse: return internal vq group struct as map token Greg Kroah-Hartman
` (68 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:15 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Darrick J. Wong, Christoph Hellwig,
Carlos Maiolino, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: "Darrick J. Wong" <djwong@kernel.org>
[ Upstream commit a1caeeadbf57ff86dfc3454398c46de86056a74e ]
LOLLM points out that xfs_iext_lookup_extent can return a @got where
got->br_startoff < startoff. In this case, xrep_cow_replace_range
replaces the entire mapping instead of just the part that had been
marked bad in the bitmap, but advances the bitmap cursor in
xrep_cow_replace by the amount replaced. As a result, we fail to
replace the end of the bad range, and replace part of the good range.
Fix this by rewriting the replace method to handle replacing the middle
of a cow fork mapping. This we do by returning both the current mapping
as @got, and the subset of the mapping that we want to replace as @rep,
using @rep to store the results of the new allocation, and comparing
@rep to @got to figure out the exact transformations needed.
Cc: stable@vger.kernel.org # v6.8
Fixes: dbbdbd0086320a ("xfs: repair problems in CoW forks")
Signed-off-by: "Darrick J. Wong" <djwong@kernel.org>
Assisted-by: LOLLM # finding obvious bugs
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Carlos Maiolino <cem@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/xfs/scrub/cow_repair.c | 203 +++++++++++++++++++++++++++++-----------------
fs/xfs/scrub/trace.h | 28 +++---
2 files changed, 148 insertions(+), 83 deletions(-)
--- a/fs/xfs/scrub/cow_repair.c
+++ b/fs/xfs/scrub/cow_repair.c
@@ -80,12 +80,6 @@ struct xrep_cow {
unsigned int next_bno;
};
-/* CoW staging extent. */
-struct xrep_cow_extent {
- xfs_fsblock_t fsbno;
- xfs_extlen_t len;
-};
-
/*
* Mark the part of the file range that corresponds to the given physical
* space. Caller must ensure that the physical range is within xc->irec.
@@ -401,22 +395,21 @@ out_rtg:
STATIC int
xrep_cow_alloc(
struct xfs_scrub *sc,
- xfs_extlen_t maxlen,
- struct xrep_cow_extent *repl)
+ struct xfs_bmbt_irec *del)
{
struct xfs_alloc_arg args = {
.tp = sc->tp,
.mp = sc->mp,
.oinfo = XFS_RMAP_OINFO_SKIP_UPDATE,
.minlen = 1,
- .maxlen = maxlen,
+ .maxlen = del->br_blockcount,
.prod = 1,
.resv = XFS_AG_RESV_NONE,
.datatype = XFS_ALLOC_USERDATA,
};
int error;
- error = xfs_trans_reserve_more(sc->tp, maxlen, 0);
+ error = xfs_trans_reserve_more(sc->tp, del->br_blockcount, 0);
if (error)
return error;
@@ -429,8 +422,8 @@ xrep_cow_alloc(
xfs_refcount_alloc_cow_extent(sc->tp, false, args.fsbno, args.len);
- repl->fsbno = args.fsbno;
- repl->len = args.len;
+ del->br_startblock = args.fsbno;
+ del->br_blockcount = args.len;
return 0;
}
@@ -441,10 +434,12 @@ xrep_cow_alloc(
STATIC int
xrep_cow_alloc_rt(
struct xfs_scrub *sc,
- xfs_extlen_t maxlen,
- struct xrep_cow_extent *repl)
+ struct xfs_bmbt_irec *del)
{
- xfs_rtxlen_t maxrtx = xfs_rtb_to_rtx(sc->mp, maxlen);
+ xfs_fsblock_t fsbno;
+ xfs_rtxlen_t maxrtx =
+ min(U32_MAX, xfs_blen_to_rtbxlen(sc->mp, del->br_blockcount));
+ xfs_extlen_t len;
int error;
error = xfs_trans_reserve_more(sc->tp, 0, maxrtx);
@@ -452,11 +447,14 @@ xrep_cow_alloc_rt(
return error;
error = xfs_rtallocate_rtgs(sc->tp, NULLRTBLOCK, 1, maxrtx, 1, false,
- false, &repl->fsbno, &repl->len);
+ false, &fsbno, &len);
if (error)
return error;
- xfs_refcount_alloc_cow_extent(sc->tp, true, repl->fsbno, repl->len);
+ xfs_refcount_alloc_cow_extent(sc->tp, true, fsbno, len);
+
+ del->br_startblock = fsbno;
+ del->br_blockcount = len;
return 0;
}
@@ -470,19 +468,19 @@ static inline int
xrep_cow_find_mapping(
struct xrep_cow *xc,
struct xfs_iext_cursor *icur,
- xfs_fileoff_t startoff,
- struct xfs_bmbt_irec *got)
+ xfs_fileoff_t badoff,
+ xfs_extlen_t badlen,
+ struct xfs_bmbt_irec *got,
+ struct xfs_bmbt_irec *rep)
{
struct xfs_inode *ip = xc->sc->ip;
struct xfs_ifork *ifp = xfs_ifork_ptr(ip, XFS_COW_FORK);
- if (!xfs_iext_lookup_extent(ip, ifp, startoff, icur, got))
+ if (!xfs_iext_lookup_extent(ip, ifp, badoff, icur, got))
goto bad;
+ memcpy(rep, got, sizeof(*rep));
- if (got->br_startoff > startoff)
- goto bad;
-
- if (got->br_blockcount == 0)
+ if (got->br_startoff > badoff)
goto bad;
if (isnullstartblock(got->br_startblock))
@@ -491,6 +489,24 @@ xrep_cow_find_mapping(
if (xfs_bmap_is_written_extent(got))
goto bad;
+ if (got->br_startoff < badoff) {
+ const int64_t delta = badoff - got->br_startoff;
+
+ rep->br_blockcount -= delta;
+ rep->br_startoff += delta;
+ rep->br_startblock += delta;
+ }
+
+ if (got->br_startoff + got->br_blockcount > badoff + badlen) {
+ const int64_t delta = (got->br_startoff + got->br_blockcount) -
+ (badoff + badlen);
+
+ rep->br_blockcount -= delta;
+ }
+
+ if (got->br_blockcount == 0)
+ goto bad;
+
return 0;
bad:
ASSERT(0);
@@ -501,46 +517,92 @@ bad:
#define REPLACE_RIGHT_SIDE (1U << 1)
/*
- * Given a CoW fork mapping @got and a replacement mapping @repl, remap the
- * beginning of @got with the space described by @rep.
+ * Given a CoW fork mapping @got and a replacement mapping @rep, map the space
+ * described by @rep into the cow fork, pushing aside @got as necessary. @icur
+ * must point to iext tree leaf containing @got.
*/
static inline void
xrep_cow_replace_mapping(
- struct xfs_inode *ip,
- struct xfs_iext_cursor *icur,
- const struct xfs_bmbt_irec *got,
- const struct xrep_cow_extent *repl)
+ struct xfs_inode *ip,
+ struct xfs_iext_cursor *icur,
+ struct xfs_bmbt_irec *got,
+ struct xfs_bmbt_irec *rep)
{
- struct xfs_bmbt_irec new = *got; /* struct copy */
+ struct xfs_ifork *ifp = xfs_ifork_ptr(ip, XFS_COW_FORK);
+ xfs_fileoff_t rep_endoff =
+ rep->br_startoff + rep->br_blockcount;
+ xfs_fileoff_t got_endoff =
+ got->br_startoff + got->br_blockcount;
+ uint32_t state = BMAP_COWFORK;
- ASSERT(repl->len > 0);
+ ASSERT(rep->br_blockcount > 0);
ASSERT(!isnullstartblock(got->br_startblock));
+ ASSERT(got->br_startoff <= rep->br_startoff);
+ ASSERT(got_endoff >= rep_endoff);
- trace_xrep_cow_replace_mapping(ip, got, repl->fsbno, repl->len);
+ trace_xrep_cow_replace_mapping(ip, got, rep);
- if (got->br_blockcount == repl->len) {
+ if (got->br_startoff == rep->br_startoff)
+ state |= BMAP_LEFT_FILLING;
+ if (got_endoff == rep_endoff)
+ state |= BMAP_RIGHT_FILLING;
+
+ switch (state & (BMAP_LEFT_FILLING | BMAP_RIGHT_FILLING)) {
+ case BMAP_LEFT_FILLING | BMAP_RIGHT_FILLING:
/*
- * The new extent is a complete replacement for the existing
- * extent. Update the COW fork record.
+ * Replacement matches the whole mapping, update the record.
*/
- new.br_startblock = repl->fsbno;
- xfs_iext_update_extent(ip, BMAP_COWFORK, icur, &new);
- return;
- }
+ xfs_iext_update_extent(ip, state, icur, rep);
+ break;
+ case BMAP_LEFT_FILLING:
+ /*
+ * Replace the first part of the mapping: Update the cursor
+ * position with the new mapping, then add a record with the
+ * tail of the old mapping.
+ */
+ got->br_startoff = rep_endoff;
+ got->br_blockcount -= rep->br_blockcount;
+ got->br_startblock += rep->br_blockcount;
+
+ xfs_iext_update_extent(ip, state, icur, rep);
+ xfs_iext_next(ifp, icur);
+ xfs_iext_insert(ip, icur, got, state);
+ break;
+ case BMAP_RIGHT_FILLING:
+ /*
+ * Replacing the last part of the mapping. Shorten the current
+ * mapping then add a record with the new mapping.
+ */
+ got->br_blockcount -= rep->br_blockcount;
- /*
- * The new extent can replace the beginning of the COW fork record.
- * Move the left side of @got upwards, then insert the new record.
- */
- new.br_startoff += repl->len;
- new.br_startblock += repl->len;
- new.br_blockcount -= repl->len;
- xfs_iext_update_extent(ip, BMAP_COWFORK, icur, &new);
-
- new.br_startoff = got->br_startoff;
- new.br_startblock = repl->fsbno;
- new.br_blockcount = repl->len;
- xfs_iext_insert(ip, icur, &new, BMAP_COWFORK);
+ xfs_iext_update_extent(ip, state, icur, got);
+ xfs_iext_next(ifp, icur);
+ xfs_iext_insert(ip, icur, rep, state);
+ break;
+ case 0:
+ /*
+ * Replacing the middle of the extent. Shorten the current
+ * mapping, add a new record with the new mapping, and add a
+ * second new record with the tail of the old mapping.
+ */
+ got->br_blockcount = rep->br_startoff - got->br_startoff;
+
+ struct xfs_bmbt_irec new = {
+ .br_startoff = rep_endoff,
+ .br_blockcount = got_endoff - rep_endoff,
+ .br_state = got->br_state,
+ .br_startblock = got->br_startblock +
+ rep->br_blockcount +
+ got->br_blockcount,
+ };
+
+ xfs_iext_update_extent(ip, state, icur, got);
+ xfs_iext_next(ifp, icur);
+ xfs_iext_insert(ip, icur, rep, state);
+ xfs_iext_next(ifp, icur);
+ xfs_iext_insert(ip, icur, &new, state);
+ break;
+ }
}
/*
@@ -554,33 +616,30 @@ xrep_cow_replace_range(
xfs_extlen_t *blockcount)
{
struct xfs_iext_cursor icur;
- struct xrep_cow_extent repl;
- struct xfs_bmbt_irec got;
+ struct xfs_bmbt_irec got, rep;
struct xfs_scrub *sc = xc->sc;
- xfs_fileoff_t nextoff;
- xfs_extlen_t alloc_len;
+ xfs_fsblock_t old_fsbno;
int error;
/*
- * Put the existing CoW fork mapping in @got. If @got ends before
- * @rep, truncate @rep so we only replace one extent mapping at a time.
+ * Put the existing CoW fork mapping in @got, and put in @rep the
+ * contents of @got trimmed to @startoff/@blockcount. We only want
+ * to replace the bad region, and only one mapping at a time.
*/
- error = xrep_cow_find_mapping(xc, &icur, startoff, &got);
+ error = xrep_cow_find_mapping(xc, &icur, startoff, *blockcount, &got,
+ &rep);
if (error)
return error;
- nextoff = min(startoff + *blockcount,
- got.br_startoff + got.br_blockcount);
+ old_fsbno = rep.br_startblock;
/*
* Allocate a replacement extent. If we don't fill all the blocks,
* shorten the quantity that will be deleted in this step.
*/
- alloc_len = min_t(xfs_fileoff_t, XFS_MAX_BMBT_EXTLEN,
- nextoff - startoff);
if (XFS_IS_REALTIME_INODE(sc->ip))
- error = xrep_cow_alloc_rt(sc, alloc_len, &repl);
+ error = xrep_cow_alloc_rt(sc, &rep);
else
- error = xrep_cow_alloc(sc, alloc_len, &repl);
+ error = xrep_cow_alloc(sc, &rep);
if (error)
return error;
@@ -588,7 +647,7 @@ xrep_cow_replace_range(
* Replace the old mapping with the new one, and commit the metadata
* changes made so far.
*/
- xrep_cow_replace_mapping(sc->ip, &icur, &got, &repl);
+ xrep_cow_replace_mapping(sc->ip, &icur, &got, &rep);
xfs_inode_set_cowblocks_tag(sc->ip);
error = xfs_defer_finish(&sc->tp);
@@ -597,15 +656,15 @@ xrep_cow_replace_range(
/* Note the old CoW staging extents; we'll reap them all later. */
if (XFS_IS_REALTIME_INODE(sc->ip))
- error = xrtb_bitmap_set(&xc->old_cowfork_rtblocks,
- got.br_startblock, repl.len);
+ error = xrtb_bitmap_set(&xc->old_cowfork_rtblocks, old_fsbno,
+ rep.br_blockcount);
else
- error = xfsb_bitmap_set(&xc->old_cowfork_fsblocks,
- got.br_startblock, repl.len);
+ error = xfsb_bitmap_set(&xc->old_cowfork_fsblocks, old_fsbno,
+ rep.br_blockcount);
if (error)
return error;
- *blockcount = repl.len;
+ *blockcount = rep.br_blockcount;
return 0;
}
--- a/fs/xfs/scrub/trace.h
+++ b/fs/xfs/scrub/trace.h
@@ -2672,9 +2672,9 @@ TRACE_EVENT(xrep_cow_mark_file_range,
);
TRACE_EVENT(xrep_cow_replace_mapping,
- TP_PROTO(struct xfs_inode *ip, const struct xfs_bmbt_irec *irec,
- xfs_fsblock_t new_startblock, xfs_extlen_t new_blockcount),
- TP_ARGS(ip, irec, new_startblock, new_blockcount),
+ TP_PROTO(struct xfs_inode *ip, const struct xfs_bmbt_irec *got,
+ const struct xfs_bmbt_irec *rep),
+ TP_ARGS(ip, got, rep),
TP_STRUCT__entry(
__field(dev_t, dev)
__field(xfs_ino_t, ino)
@@ -2682,28 +2682,34 @@ TRACE_EVENT(xrep_cow_replace_mapping,
__field(xfs_fileoff_t, startoff)
__field(xfs_filblks_t, blockcount)
__field(xfs_exntst_t, state)
+ __field(xfs_fileoff_t, new_startoff)
__field(xfs_fsblock_t, new_startblock)
__field(xfs_extlen_t, new_blockcount)
+ __field(xfs_exntst_t, new_state)
),
TP_fast_assign(
__entry->dev = ip->i_mount->m_super->s_dev;
__entry->ino = ip->i_ino;
- __entry->startoff = irec->br_startoff;
- __entry->startblock = irec->br_startblock;
- __entry->blockcount = irec->br_blockcount;
- __entry->state = irec->br_state;
- __entry->new_startblock = new_startblock;
- __entry->new_blockcount = new_blockcount;
+ __entry->startoff = got->br_startoff;
+ __entry->startblock = got->br_startblock;
+ __entry->blockcount = got->br_blockcount;
+ __entry->state = got->br_state;
+ __entry->new_startoff = rep->br_startoff;
+ __entry->new_startblock = rep->br_startblock;
+ __entry->new_blockcount = rep->br_blockcount;
+ __entry->new_state = rep->br_state;
),
- TP_printk("dev %d:%d ino 0x%llx startoff 0x%llx startblock 0x%llx fsbcount 0x%llx state 0x%x new_startblock 0x%llx new_fsbcount 0x%x",
+ TP_printk("dev %d:%d ino 0x%llx startoff 0x%llx startblock 0x%llx fsbcount 0x%llx state 0x%x new_startoff 0x%llx new_startblock 0x%llx new_fsbcount 0x%x new_state 0x%x",
MAJOR(__entry->dev), MINOR(__entry->dev),
__entry->ino,
__entry->startoff,
__entry->startblock,
__entry->blockcount,
__entry->state,
+ __entry->new_startoff,
__entry->new_startblock,
- __entry->new_blockcount)
+ __entry->new_blockcount,
+ __entry->new_state)
);
TRACE_EVENT(xrep_cow_free_staging,
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 612/675] vduse: return internal vq group struct as map token
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (610 preceding siblings ...)
2026-07-30 14:15 ` [PATCH 6.18 611/675] xfs: dont replace the wrong part of the cow fork Greg Kroah-Hartman
@ 2026-07-30 14:15 ` Greg Kroah-Hartman
2026-07-30 14:15 ` [PATCH 6.18 613/675] vduse: remove unused vaddr parameter of vduse_domain_free_coherent Greg Kroah-Hartman
` (67 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:15 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Jason Wang, Eugenio Pérez,
Michael S. Tsirkin, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Eugenio Pérez <eperezma@redhat.com>
[ Upstream commit 02e3f7ffe2906033da73b7c7ea8180b131d0cdbc ]
Return the internal struct that represents the vq group as virtqueue map
token, instead of the device. This allows the map functions to access
the information per group.
At this moment all the virtqueues share the same vq group, that only
can point to ASID 0. This change prepares the infrastructure for actual
per-group address space handling
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Message-Id: <20260119143306.1818855-5-eperezma@redhat.com>
Stable-dep-of: 9c1523803445 ("VDUSE: avoid leaking information to userspace")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/vdpa/vdpa_user/iova_domain.c | 21 ++----
drivers/vdpa/vdpa_user/iova_domain.h | 5 -
drivers/vdpa/vdpa_user/vduse_dev.c | 109 ++++++++++++++++++++++++++++++-----
include/linux/virtio.h | 6 -
4 files changed, 108 insertions(+), 33 deletions(-)
--- a/drivers/vdpa/vdpa_user/iova_domain.c
+++ b/drivers/vdpa/vdpa_user/iova_domain.c
@@ -493,17 +493,15 @@ void vduse_domain_unmap_page(struct vdus
vduse_domain_free_iova(iovad, dma_addr, size);
}
-void *vduse_domain_alloc_coherent(struct vduse_iova_domain *domain,
- size_t size, dma_addr_t *dma_addr,
- gfp_t flag)
+dma_addr_t vduse_domain_alloc_coherent(struct vduse_iova_domain *domain,
+ size_t size, void *orig)
{
struct iova_domain *iovad = &domain->consistent_iovad;
unsigned long limit = domain->iova_limit;
dma_addr_t iova = vduse_domain_alloc_iova(iovad, size, limit);
- void *orig = alloc_pages_exact(size, flag);
- if (!iova || !orig)
- goto err;
+ if (!iova)
+ return DMA_MAPPING_ERROR;
spin_lock(&domain->iotlb_lock);
if (vduse_iotlb_add_range(domain, (u64)iova, (u64)iova + size - 1,
@@ -514,17 +512,12 @@ void *vduse_domain_alloc_coherent(struct
}
spin_unlock(&domain->iotlb_lock);
- *dma_addr = iova;
+ return iova;
- return orig;
err:
- *dma_addr = DMA_MAPPING_ERROR;
- if (orig)
- free_pages_exact(orig, size);
- if (iova)
- vduse_domain_free_iova(iovad, iova, size);
+ vduse_domain_free_iova(iovad, iova, size);
- return NULL;
+ return DMA_MAPPING_ERROR;
}
void vduse_domain_free_coherent(struct vduse_iova_domain *domain, size_t size,
--- a/drivers/vdpa/vdpa_user/iova_domain.h
+++ b/drivers/vdpa/vdpa_user/iova_domain.h
@@ -67,9 +67,8 @@ void vduse_domain_unmap_page(struct vdus
dma_addr_t dma_addr, size_t size,
enum dma_data_direction dir, unsigned long attrs);
-void *vduse_domain_alloc_coherent(struct vduse_iova_domain *domain,
- size_t size, dma_addr_t *dma_addr,
- gfp_t flag);
+dma_addr_t vduse_domain_alloc_coherent(struct vduse_iova_domain *domain,
+ size_t size, void *orig);
void vduse_domain_free_coherent(struct vduse_iova_domain *domain, size_t size,
void *vaddr, dma_addr_t dma_addr,
--- a/drivers/vdpa/vdpa_user/vduse_dev.c
+++ b/drivers/vdpa/vdpa_user/vduse_dev.c
@@ -22,6 +22,7 @@
#include <linux/uio.h>
#include <linux/vdpa.h>
#include <linux/nospec.h>
+#include <linux/virtio.h>
#include <linux/vmalloc.h>
#include <linux/sched/mm.h>
#include <uapi/linux/vduse.h>
@@ -83,6 +84,10 @@ struct vduse_umem {
struct mm_struct *mm;
};
+struct vduse_vq_group {
+ struct vduse_dev *dev;
+};
+
struct vduse_dev {
struct vduse_vdpa *vdev;
struct device *dev;
@@ -115,6 +120,7 @@ struct vduse_dev {
u32 vq_num;
u32 vq_align;
struct vduse_umem *umem;
+ struct vduse_vq_group *groups;
struct mutex mem_lock;
unsigned int bounce_size;
struct mutex domain_lock;
@@ -615,6 +621,16 @@ static int vduse_vdpa_set_vq_state(struc
return 0;
}
+static union virtio_map vduse_get_vq_map(struct vdpa_device *vdpa, u16 idx)
+{
+ struct vduse_dev *dev = vdpa_to_vduse(vdpa);
+ union virtio_map ret = {
+ .group = &dev->groups[0],
+ };
+
+ return ret;
+}
+
static int vduse_vdpa_get_vq_state(struct vdpa_device *vdpa, u16 idx,
struct vdpa_vq_state *state)
{
@@ -834,6 +850,7 @@ static const struct vdpa_config_ops vdus
.get_vq_affinity = vduse_vdpa_get_vq_affinity,
.reset = vduse_vdpa_reset,
.set_map = vduse_vdpa_set_map,
+ .get_vq_map = vduse_get_vq_map,
.free = vduse_vdpa_free,
};
@@ -841,7 +858,14 @@ static void vduse_dev_sync_single_for_de
dma_addr_t dma_addr, size_t size,
enum dma_data_direction dir)
{
- struct vduse_iova_domain *domain = token.iova_domain;
+ struct vduse_dev *vdev;
+ struct vduse_iova_domain *domain;
+
+ if (!token.group)
+ return;
+
+ vdev = token.group->dev;
+ domain = vdev->domain;
vduse_domain_sync_single_for_device(domain, dma_addr, size, dir);
}
@@ -850,7 +874,14 @@ static void vduse_dev_sync_single_for_cp
dma_addr_t dma_addr, size_t size,
enum dma_data_direction dir)
{
- struct vduse_iova_domain *domain = token.iova_domain;
+ struct vduse_dev *vdev;
+ struct vduse_iova_domain *domain;
+
+ if (!token.group)
+ return;
+
+ vdev = token.group->dev;
+ domain = vdev->domain;
vduse_domain_sync_single_for_cpu(domain, dma_addr, size, dir);
}
@@ -860,7 +891,14 @@ static dma_addr_t vduse_dev_map_page(uni
enum dma_data_direction dir,
unsigned long attrs)
{
- struct vduse_iova_domain *domain = token.iova_domain;
+ struct vduse_dev *vdev;
+ struct vduse_iova_domain *domain;
+
+ if (!token.group)
+ return DMA_MAPPING_ERROR;
+
+ vdev = token.group->dev;
+ domain = vdev->domain;
return vduse_domain_map_page(domain, page, offset, size, dir, attrs);
}
@@ -869,7 +907,14 @@ static void vduse_dev_unmap_page(union v
size_t size, enum dma_data_direction dir,
unsigned long attrs)
{
- struct vduse_iova_domain *domain = token.iova_domain;
+ struct vduse_dev *vdev;
+ struct vduse_iova_domain *domain;
+
+ if (!token.group)
+ return;
+
+ vdev = token.group->dev;
+ domain = vdev->domain;
return vduse_domain_unmap_page(domain, dma_addr, size, dir, attrs);
}
@@ -877,33 +922,57 @@ static void vduse_dev_unmap_page(union v
static void *vduse_dev_alloc_coherent(union virtio_map token, size_t size,
dma_addr_t *dma_addr, gfp_t flag)
{
- struct vduse_iova_domain *domain = token.iova_domain;
- unsigned long iova;
+ struct vduse_dev *vdev;
+ struct vduse_iova_domain *domain;
void *addr;
*dma_addr = DMA_MAPPING_ERROR;
- addr = vduse_domain_alloc_coherent(domain, size,
- (dma_addr_t *)&iova, flag);
+ if (!token.group)
+ return NULL;
+
+ addr = alloc_pages_exact(size, flag);
if (!addr)
return NULL;
- *dma_addr = (dma_addr_t)iova;
+ vdev = token.group->dev;
+ domain = vdev->domain;
+ *dma_addr = vduse_domain_alloc_coherent(domain, size, addr);
+ if (*dma_addr == DMA_MAPPING_ERROR)
+ goto err;
return addr;
+
+err:
+ free_pages_exact(addr, size);
+ return NULL;
}
static void vduse_dev_free_coherent(union virtio_map token, size_t size,
void *vaddr, dma_addr_t dma_addr,
unsigned long attrs)
{
- struct vduse_iova_domain *domain = token.iova_domain;
+ struct vduse_dev *vdev;
+ struct vduse_iova_domain *domain;
+
+ if (!token.group)
+ return;
+
+ vdev = token.group->dev;
+ domain = vdev->domain;
vduse_domain_free_coherent(domain, size, vaddr, dma_addr, attrs);
}
static bool vduse_dev_need_sync(union virtio_map token, dma_addr_t dma_addr)
{
- struct vduse_iova_domain *domain = token.iova_domain;
+ struct vduse_dev *vdev;
+ struct vduse_iova_domain *domain;
+
+ if (!token.group)
+ return false;
+
+ vdev = token.group->dev;
+ domain = vdev->domain;
return dma_addr < domain->bounce_size;
}
@@ -917,7 +986,14 @@ static int vduse_dev_mapping_error(union
static size_t vduse_dev_max_mapping_size(union virtio_map token)
{
- struct vduse_iova_domain *domain = token.iova_domain;
+ struct vduse_dev *vdev;
+ struct vduse_iova_domain *domain;
+
+ if (!token.group)
+ return 0;
+
+ vdev = token.group->dev;
+ domain = vdev->domain;
return domain->bounce_size;
}
@@ -1716,6 +1792,7 @@ static int vduse_destroy_dev(char *name)
if (dev->domain)
vduse_domain_destroy(dev->domain);
kfree(dev->name);
+ kfree(dev->groups);
vduse_dev_destroy(dev);
module_put(THIS_MODULE);
@@ -1874,6 +1951,11 @@ static int vduse_create_dev(struct vduse
dev->device_features = config->features;
dev->device_id = config->device_id;
dev->vendor_id = config->vendor_id;
+ dev->groups = kcalloc(1, sizeof(dev->groups[0]), GFP_KERNEL);
+ if (!dev->groups)
+ goto err_vq_groups;
+ dev->groups[0].dev = dev;
+
dev->name = kstrdup(config->name, GFP_KERNEL);
if (!dev->name)
goto err_str;
@@ -1910,6 +1992,8 @@ err_dev:
err_idr:
kfree(dev->name);
err_str:
+ kfree(dev->groups);
+err_vq_groups:
vduse_dev_destroy(dev);
err:
return ret;
@@ -2071,7 +2155,6 @@ static int vdpa_dev_add(struct vdpa_mgmt
return -ENOMEM;
}
- dev->vdev->vdpa.vmap.iova_domain = dev->domain;
ret = _vdpa_register_device(&dev->vdev->vdpa, dev->vq_num);
if (ret) {
put_device(&dev->vdev->vdpa.dev);
--- a/include/linux/virtio.h
+++ b/include/linux/virtio.h
@@ -41,13 +41,13 @@ struct virtqueue {
void *priv;
};
-struct vduse_iova_domain;
+struct vduse_vq_group;
union virtio_map {
/* Device that performs DMA */
struct device *dma_dev;
- /* VDUSE specific mapping data */
- struct vduse_iova_domain *iova_domain;
+ /* VDUSE specific virtqueue group for doing map */
+ struct vduse_vq_group *group;
};
int virtqueue_add_outbuf(struct virtqueue *vq,
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 613/675] vduse: remove unused vaddr parameter of vduse_domain_free_coherent
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (611 preceding siblings ...)
2026-07-30 14:15 ` [PATCH 6.18 612/675] vduse: return internal vq group struct as map token Greg Kroah-Hartman
@ 2026-07-30 14:15 ` Greg Kroah-Hartman
2026-07-30 14:15 ` [PATCH 6.18 614/675] vduse: take out allocations from vduse_dev_alloc_coherent Greg Kroah-Hartman
` (66 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:15 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Eugenio Pérez,
Michael S. Tsirkin, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Eugenio Pérez <eperezma@redhat.com>
[ Upstream commit 766e1749c0ef6a09651be9b8a8283d508c322b58 ]
We will modify the function in next patches so let's clean it first.
Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Message-Id: <20260119143306.1818855-9-eperezma@redhat.com>
Stable-dep-of: 9c1523803445 ("VDUSE: avoid leaking information to userspace")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/vdpa/vdpa_user/iova_domain.c | 3 +--
drivers/vdpa/vdpa_user/iova_domain.h | 3 +--
drivers/vdpa/vdpa_user/vduse_dev.c | 2 +-
3 files changed, 3 insertions(+), 5 deletions(-)
--- a/drivers/vdpa/vdpa_user/iova_domain.c
+++ b/drivers/vdpa/vdpa_user/iova_domain.c
@@ -521,8 +521,7 @@ err:
}
void vduse_domain_free_coherent(struct vduse_iova_domain *domain, size_t size,
- void *vaddr, dma_addr_t dma_addr,
- unsigned long attrs)
+ dma_addr_t dma_addr, unsigned long attrs)
{
struct iova_domain *iovad = &domain->consistent_iovad;
struct vhost_iotlb_map *map;
--- a/drivers/vdpa/vdpa_user/iova_domain.h
+++ b/drivers/vdpa/vdpa_user/iova_domain.h
@@ -71,8 +71,7 @@ dma_addr_t vduse_domain_alloc_coherent(s
size_t size, void *orig);
void vduse_domain_free_coherent(struct vduse_iova_domain *domain, size_t size,
- void *vaddr, dma_addr_t dma_addr,
- unsigned long attrs);
+ dma_addr_t dma_addr, unsigned long attrs);
void vduse_domain_reset_bounce_map(struct vduse_iova_domain *domain);
--- a/drivers/vdpa/vdpa_user/vduse_dev.c
+++ b/drivers/vdpa/vdpa_user/vduse_dev.c
@@ -960,7 +960,7 @@ static void vduse_dev_free_coherent(unio
vdev = token.group->dev;
domain = vdev->domain;
- vduse_domain_free_coherent(domain, size, vaddr, dma_addr, attrs);
+ vduse_domain_free_coherent(domain, size, dma_addr, attrs);
}
static bool vduse_dev_need_sync(union virtio_map token, dma_addr_t dma_addr)
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 614/675] vduse: take out allocations from vduse_dev_alloc_coherent
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (612 preceding siblings ...)
2026-07-30 14:15 ` [PATCH 6.18 613/675] vduse: remove unused vaddr parameter of vduse_domain_free_coherent Greg Kroah-Hartman
@ 2026-07-30 14:15 ` Greg Kroah-Hartman
2026-07-30 14:15 ` [PATCH 6.18 615/675] VDUSE: avoid leaking information to userspace Greg Kroah-Hartman
` (65 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:15 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Jason Wang, Eugenio Pérez,
Michael S. Tsirkin, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Eugenio Pérez <eperezma@redhat.com>
[ Upstream commit 489d76520612abf9a4ede4344349105406c91a73 ]
The function vduse_dev_alloc_coherent will be called under rwlock in
next patches. Make it out of the lock to avoid increasing its fail
rate.
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Message-Id: <20260119143306.1818855-10-eperezma@redhat.com>
Stable-dep-of: 9c1523803445 ("VDUSE: avoid leaking information to userspace")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/vdpa/vdpa_user/iova_domain.c | 3 ---
drivers/vdpa/vdpa_user/vduse_dev.c | 1 +
2 files changed, 1 insertion(+), 3 deletions(-)
--- a/drivers/vdpa/vdpa_user/iova_domain.c
+++ b/drivers/vdpa/vdpa_user/iova_domain.c
@@ -526,7 +526,6 @@ void vduse_domain_free_coherent(struct v
struct iova_domain *iovad = &domain->consistent_iovad;
struct vhost_iotlb_map *map;
struct vdpa_map_file *map_file;
- phys_addr_t pa;
spin_lock(&domain->iotlb_lock);
map = vhost_iotlb_itree_first(domain->iotlb, (u64)dma_addr,
@@ -538,12 +537,10 @@ void vduse_domain_free_coherent(struct v
map_file = (struct vdpa_map_file *)map->opaque;
fput(map_file->file);
kfree(map_file);
- pa = map->addr;
vhost_iotlb_map_free(domain->iotlb, map);
spin_unlock(&domain->iotlb_lock);
vduse_domain_free_iova(iovad, dma_addr, size);
- free_pages_exact(phys_to_virt(pa), size);
}
static vm_fault_t vduse_domain_mmap_fault(struct vm_fault *vmf)
--- a/drivers/vdpa/vdpa_user/vduse_dev.c
+++ b/drivers/vdpa/vdpa_user/vduse_dev.c
@@ -961,6 +961,7 @@ static void vduse_dev_free_coherent(unio
domain = vdev->domain;
vduse_domain_free_coherent(domain, size, dma_addr, attrs);
+ free_pages_exact(vaddr, size);
}
static bool vduse_dev_need_sync(union virtio_map token, dma_addr_t dma_addr)
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 615/675] VDUSE: avoid leaking information to userspace
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (613 preceding siblings ...)
2026-07-30 14:15 ` [PATCH 6.18 614/675] vduse: take out allocations from vduse_dev_alloc_coherent Greg Kroah-Hartman
@ 2026-07-30 14:15 ` Greg Kroah-Hartman
2026-07-30 14:15 ` [PATCH 6.18 616/675] arm64: dts: qcom: correct RBR opp entry Greg Kroah-Hartman
` (64 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:15 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Jason Wang, Xie Yongji,
Eugenio Pérez, Michael S. Tsirkin, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jason Wang <jasowang@redhat.com>
[ Upstream commit 9c1523803445ee0348f62b77793266dd981596e0 ]
The bounceing is not necessarily page aligned, so current VDUSE can
leak kernel information through mapping bounce pages to
userspace. Allocate bounce pages with __GFP_ZERO to avoid leaking
information to userspace.
Fixes: 8c773d53fb7b ("vduse: Implement an MMU-based software IOTLB")
Cc: stable@vger.kernel.org
Signed-off-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Xie Yongji <xieyongji@bytedance.com>
Reviewed-by: Eugenio Pérez <eperezma@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Message-ID: <20260130050750.4050-1-jasowang@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/vdpa/vdpa_user/iova_domain.c | 2 +-
drivers/vdpa/vdpa_user/vduse_dev.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/vdpa/vdpa_user/iova_domain.c
+++ b/drivers/vdpa/vdpa_user/iova_domain.c
@@ -124,7 +124,7 @@ static int vduse_domain_map_bounce_page(
if (!map->bounce_page) {
head_map = &domain->bounce_maps[(iova & PAGE_MASK) >> BOUNCE_MAP_SHIFT];
if (!head_map->bounce_page) {
- tmp_page = alloc_page(GFP_ATOMIC);
+ tmp_page = alloc_page(GFP_ATOMIC | __GFP_ZERO);
if (!tmp_page)
return -ENOMEM;
if (cmpxchg(&head_map->bounce_page, NULL, tmp_page))
--- a/drivers/vdpa/vdpa_user/vduse_dev.c
+++ b/drivers/vdpa/vdpa_user/vduse_dev.c
@@ -930,7 +930,7 @@ static void *vduse_dev_alloc_coherent(un
if (!token.group)
return NULL;
- addr = alloc_pages_exact(size, flag);
+ addr = alloc_pages_exact(size, flag | __GFP_ZERO);
if (!addr)
return NULL;
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 616/675] arm64: dts: qcom: correct RBR opp entry
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (614 preceding siblings ...)
2026-07-30 14:15 ` [PATCH 6.18 615/675] VDUSE: avoid leaking information to userspace Greg Kroah-Hartman
@ 2026-07-30 14:15 ` Greg Kroah-Hartman
2026-07-30 14:15 ` [PATCH 6.18 617/675] arm64: dts: qcom: hamoa: Fix OPP tables for all DisplayPort controllers Greg Kroah-Hartman
` (63 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:15 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Dmitry Baryshkov, Bjorn Andersson,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
[ Upstream commit a5c21b9bd5f531e50141b0484faabb707b92f1e2 ]
DisplayPort Reduced Bit Rate uses link rate of 1.62 Gbps, the main link
clock should be 162 MHz. Having the incorrect frequency (160 MHz) in the
OPP table will result in selecting wrong link frequency. Correct the
entry in the OPP table.
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20260304-msm-fix-rbr-v1-1-b9eba986eaef@oss.qualcomm.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Stable-dep-of: c17e22094667 ("arm64: dts: qcom: hamoa: Fix OPP tables for all DisplayPort controllers")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/arm64/boot/dts/qcom/lemans.dtsi | 8 ++++----
arch/arm64/boot/dts/qcom/sc7180.dtsi | 4 ++--
arch/arm64/boot/dts/qcom/sc7280.dtsi | 8 ++++----
arch/arm64/boot/dts/qcom/sc8180x.dtsi | 12 ++++++------
arch/arm64/boot/dts/qcom/sc8280xp.dtsi | 32 ++++++++++++++++----------------
arch/arm64/boot/dts/qcom/sm6350.dtsi | 4 ++--
arch/arm64/boot/dts/qcom/sm8150.dtsi | 4 ++--
arch/arm64/boot/dts/qcom/sm8250.dtsi | 4 ++--
arch/arm64/boot/dts/qcom/sm8350.dtsi | 4 ++--
arch/arm64/boot/dts/qcom/sm8450.dtsi | 4 ++--
arch/arm64/boot/dts/qcom/x1e80100.dtsi | 16 ++++++++--------
11 files changed, 50 insertions(+), 50 deletions(-)
--- a/arch/arm64/boot/dts/qcom/lemans.dtsi
+++ b/arch/arm64/boot/dts/qcom/lemans.dtsi
@@ -5146,8 +5146,8 @@
dp_opp_table: opp-table {
compatible = "operating-points-v2";
- opp-160000000 {
- opp-hz = /bits/ 64 <160000000>;
+ opp-162000000 {
+ opp-hz = /bits/ 64 <162000000>;
required-opps = <&rpmhpd_opp_low_svs>;
};
@@ -5234,8 +5234,8 @@
dp1_opp_table: opp-table {
compatible = "operating-points-v2";
- opp-160000000 {
- opp-hz = /bits/ 64 <160000000>;
+ opp-162000000 {
+ opp-hz = /bits/ 64 <162000000>;
required-opps = <&rpmhpd_opp_low_svs>;
};
--- a/arch/arm64/boot/dts/qcom/sc7180.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc7180.dtsi
@@ -3452,8 +3452,8 @@
dp_opp_table: opp-table {
compatible = "operating-points-v2";
- opp-160000000 {
- opp-hz = /bits/ 64 <160000000>;
+ opp-162000000 {
+ opp-hz = /bits/ 64 <162000000>;
required-opps = <&rpmhpd_opp_low_svs>;
};
--- a/arch/arm64/boot/dts/qcom/sc7280.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc7280.dtsi
@@ -5196,8 +5196,8 @@
edp_opp_table: opp-table {
compatible = "operating-points-v2";
- opp-160000000 {
- opp-hz = /bits/ 64 <160000000>;
+ opp-162000000 {
+ opp-hz = /bits/ 64 <162000000>;
required-opps = <&rpmhpd_opp_low_svs>;
};
@@ -5295,8 +5295,8 @@
dp_opp_table: opp-table {
compatible = "operating-points-v2";
- opp-160000000 {
- opp-hz = /bits/ 64 <160000000>;
+ opp-162000000 {
+ opp-hz = /bits/ 64 <162000000>;
required-opps = <&rpmhpd_opp_low_svs>;
};
--- a/arch/arm64/boot/dts/qcom/sc8180x.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc8180x.dtsi
@@ -3303,8 +3303,8 @@
dp0_opp_table: opp-table {
compatible = "operating-points-v2";
- opp-160000000 {
- opp-hz = /bits/ 64 <160000000>;
+ opp-162000000 {
+ opp-hz = /bits/ 64 <162000000>;
required-opps = <&rpmhpd_opp_low_svs>;
};
@@ -3385,8 +3385,8 @@
dp1_opp_table: opp-table {
compatible = "operating-points-v2";
- opp-160000000 {
- opp-hz = /bits/ 64 <160000000>;
+ opp-162000000 {
+ opp-hz = /bits/ 64 <162000000>;
required-opps = <&rpmhpd_opp_low_svs>;
};
@@ -3461,8 +3461,8 @@
edp_opp_table: opp-table {
compatible = "operating-points-v2";
- opp-160000000 {
- opp-hz = /bits/ 64 <160000000>;
+ opp-162000000 {
+ opp-hz = /bits/ 64 <162000000>;
required-opps = <&rpmhpd_opp_low_svs>;
};
--- a/arch/arm64/boot/dts/qcom/sc8280xp.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc8280xp.dtsi
@@ -4754,8 +4754,8 @@
mdss0_dp0_opp_table: opp-table {
compatible = "operating-points-v2";
- opp-160000000 {
- opp-hz = /bits/ 64 <160000000>;
+ opp-162000000 {
+ opp-hz = /bits/ 64 <162000000>;
required-opps = <&rpmhpd_opp_low_svs>;
};
@@ -4836,8 +4836,8 @@
mdss0_dp1_opp_table: opp-table {
compatible = "operating-points-v2";
- opp-160000000 {
- opp-hz = /bits/ 64 <160000000>;
+ opp-162000000 {
+ opp-hz = /bits/ 64 <162000000>;
required-opps = <&rpmhpd_opp_low_svs>;
};
@@ -4916,8 +4916,8 @@
mdss0_dp2_opp_table: opp-table {
compatible = "operating-points-v2";
- opp-160000000 {
- opp-hz = /bits/ 64 <160000000>;
+ opp-162000000 {
+ opp-hz = /bits/ 64 <162000000>;
required-opps = <&rpmhpd_opp_low_svs>;
};
@@ -4991,8 +4991,8 @@
mdss0_dp3_opp_table: opp-table {
compatible = "operating-points-v2";
- opp-160000000 {
- opp-hz = /bits/ 64 <160000000>;
+ opp-162000000 {
+ opp-hz = /bits/ 64 <162000000>;
required-opps = <&rpmhpd_opp_low_svs>;
};
@@ -6110,8 +6110,8 @@
mdss1_dp0_opp_table: opp-table {
compatible = "operating-points-v2";
- opp-160000000 {
- opp-hz = /bits/ 64 <160000000>;
+ opp-162000000 {
+ opp-hz = /bits/ 64 <162000000>;
required-opps = <&rpmhpd_opp_low_svs>;
};
@@ -6190,8 +6190,8 @@
mdss1_dp1_opp_table: opp-table {
compatible = "operating-points-v2";
- opp-160000000 {
- opp-hz = /bits/ 64 <160000000>;
+ opp-162000000 {
+ opp-hz = /bits/ 64 <162000000>;
required-opps = <&rpmhpd_opp_low_svs>;
};
@@ -6270,8 +6270,8 @@
mdss1_dp2_opp_table: opp-table {
compatible = "operating-points-v2";
- opp-160000000 {
- opp-hz = /bits/ 64 <160000000>;
+ opp-162000000 {
+ opp-hz = /bits/ 64 <162000000>;
required-opps = <&rpmhpd_opp_low_svs>;
};
@@ -6345,8 +6345,8 @@
mdss1_dp3_opp_table: opp-table {
compatible = "operating-points-v2";
- opp-160000000 {
- opp-hz = /bits/ 64 <160000000>;
+ opp-162000000 {
+ opp-hz = /bits/ 64 <162000000>;
required-opps = <&rpmhpd_opp_low_svs>;
};
--- a/arch/arm64/boot/dts/qcom/sm6350.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm6350.dtsi
@@ -2306,8 +2306,8 @@
dp_opp_table: opp-table {
compatible = "operating-points-v2";
- opp-160000000 {
- opp-hz = /bits/ 64 <160000000>;
+ opp-162000000 {
+ opp-hz = /bits/ 64 <162000000>;
required-opps = <&rpmhpd_opp_low_svs>;
};
--- a/arch/arm64/boot/dts/qcom/sm8150.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm8150.dtsi
@@ -3939,8 +3939,8 @@
dp_opp_table: opp-table {
compatible = "operating-points-v2";
- opp-160000000 {
- opp-hz = /bits/ 64 <160000000>;
+ opp-162000000 {
+ opp-hz = /bits/ 64 <162000000>;
required-opps = <&rpmhpd_opp_low_svs>;
};
--- a/arch/arm64/boot/dts/qcom/sm8250.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm8250.dtsi
@@ -4824,8 +4824,8 @@
dp_opp_table: opp-table {
compatible = "operating-points-v2";
- opp-160000000 {
- opp-hz = /bits/ 64 <160000000>;
+ opp-162000000 {
+ opp-hz = /bits/ 64 <162000000>;
required-opps = <&rpmhpd_opp_low_svs>;
};
--- a/arch/arm64/boot/dts/qcom/sm8350.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm8350.dtsi
@@ -2925,8 +2925,8 @@
dp_opp_table: opp-table {
compatible = "operating-points-v2";
- opp-160000000 {
- opp-hz = /bits/ 64 <160000000>;
+ opp-162000000 {
+ opp-hz = /bits/ 64 <162000000>;
required-opps = <&rpmhpd_opp_low_svs>;
};
--- a/arch/arm64/boot/dts/qcom/sm8450.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm8450.dtsi
@@ -3483,8 +3483,8 @@
dp_opp_table: opp-table {
compatible = "operating-points-v2";
- opp-160000000 {
- opp-hz = /bits/ 64 <160000000>;
+ opp-162000000 {
+ opp-hz = /bits/ 64 <162000000>;
required-opps = <&rpmhpd_opp_low_svs>;
};
--- a/arch/arm64/boot/dts/qcom/x1e80100.dtsi
+++ b/arch/arm64/boot/dts/qcom/x1e80100.dtsi
@@ -5522,8 +5522,8 @@
mdss_dp0_opp_table: opp-table {
compatible = "operating-points-v2";
- opp-160000000 {
- opp-hz = /bits/ 64 <160000000>;
+ opp-162000000 {
+ opp-hz = /bits/ 64 <162000000>;
required-opps = <&rpmhpd_opp_low_svs>;
};
@@ -5610,8 +5610,8 @@
mdss_dp1_opp_table: opp-table {
compatible = "operating-points-v2";
- opp-160000000 {
- opp-hz = /bits/ 64 <160000000>;
+ opp-162000000 {
+ opp-hz = /bits/ 64 <162000000>;
required-opps = <&rpmhpd_opp_low_svs>;
};
@@ -5697,8 +5697,8 @@
mdss_dp2_opp_table: opp-table {
compatible = "operating-points-v2";
- opp-160000000 {
- opp-hz = /bits/ 64 <160000000>;
+ opp-162000000 {
+ opp-hz = /bits/ 64 <162000000>;
required-opps = <&rpmhpd_opp_low_svs>;
};
@@ -5779,8 +5779,8 @@
mdss_dp3_opp_table: opp-table {
compatible = "operating-points-v2";
- opp-160000000 {
- opp-hz = /bits/ 64 <160000000>;
+ opp-162000000 {
+ opp-hz = /bits/ 64 <162000000>;
required-opps = <&rpmhpd_opp_low_svs>;
};
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 617/675] arm64: dts: qcom: hamoa: Fix OPP tables for all DisplayPort controllers
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (615 preceding siblings ...)
2026-07-30 14:15 ` [PATCH 6.18 616/675] arm64: dts: qcom: correct RBR opp entry Greg Kroah-Hartman
@ 2026-07-30 14:15 ` Greg Kroah-Hartman
2026-07-30 14:15 ` [PATCH 6.18 618/675] netfilter: nf_tables: remove register tracking infrastructure Greg Kroah-Hartman
` (62 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:15 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Dmitry Baryshkov, Konrad Dybcio,
Abel Vesa, Bjorn Andersson, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Abel Vesa <abel.vesa@oss.qualcomm.com>
[ Upstream commit c17e220946675232d383620ed9cff6685735ec48 ]
According to internal documentation, the corners specific for each rate
from the DP link clock are:
- LOWSVS_D1 -> 19.2 MHz
- LOWSVS -> 270 MHz
- SVS -> 540 MHz (594 MHz in case of DP3)
- SVS_L1 -> 594 MHz
- NOM -> 810 MHz
- NOM_L1 -> 810 MHz
- TURBO -> 810 MHz
So fix all tables for each of the four controllers according to the
documentation, but since DP0 through DP2 have the same entries in their
tables, lets drop the DP1 and DP2 and have all of them share the DP0
table instead. However keep a separate table for the DP3 as it is
different for the SVS, compared to the rest of the controllers.
The 19.2 MHz @ LOWSVS_D1 isn't needed as it's not an actual working
frequency and the controller will never select it. So remove it.
Cc: stable@vger.kernel.org # v6.9+
Fixes: 1940c25eaa63 ("arm64: dts: qcom: x1e80100: Add display nodes")
Suggested-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Signed-off-by: Abel Vesa <abel.vesa@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20260323-hamoa-fix-dp3-opp-table-v3-1-a823776bd1b0@oss.qualcomm.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/arm64/boot/dts/qcom/x1e80100.dtsi | 77 +++++----------------------------
1 file changed, 12 insertions(+), 65 deletions(-)
--- a/arch/arm64/boot/dts/qcom/x1e80100.dtsi
+++ b/arch/arm64/boot/dts/qcom/x1e80100.dtsi
@@ -5522,18 +5522,18 @@
mdss_dp0_opp_table: opp-table {
compatible = "operating-points-v2";
- opp-162000000 {
- opp-hz = /bits/ 64 <162000000>;
- required-opps = <&rpmhpd_opp_low_svs>;
- };
-
opp-270000000 {
opp-hz = /bits/ 64 <270000000>;
- required-opps = <&rpmhpd_opp_svs>;
+ required-opps = <&rpmhpd_opp_low_svs>;
};
opp-540000000 {
opp-hz = /bits/ 64 <540000000>;
+ required-opps = <&rpmhpd_opp_svs>;
+ };
+
+ opp-594000000 {
+ opp-hz = /bits/ 64 <594000000>;
required-opps = <&rpmhpd_opp_svs_l1>;
};
@@ -5574,7 +5574,7 @@
<&usb_1_ss1_qmpphy QMP_USB43DP_DP_VCO_DIV_CLK>,
<&usb_1_ss1_qmpphy QMP_USB43DP_DP_VCO_DIV_CLK>;
- operating-points-v2 = <&mdss_dp1_opp_table>;
+ operating-points-v2 = <&mdss_dp0_opp_table>;
power-domains = <&rpmhpd RPMHPD_MMCX>;
@@ -5606,30 +5606,6 @@
};
};
};
-
- mdss_dp1_opp_table: opp-table {
- compatible = "operating-points-v2";
-
- opp-162000000 {
- opp-hz = /bits/ 64 <162000000>;
- required-opps = <&rpmhpd_opp_low_svs>;
- };
-
- opp-270000000 {
- opp-hz = /bits/ 64 <270000000>;
- required-opps = <&rpmhpd_opp_svs>;
- };
-
- opp-540000000 {
- opp-hz = /bits/ 64 <540000000>;
- required-opps = <&rpmhpd_opp_svs_l1>;
- };
-
- opp-810000000 {
- opp-hz = /bits/ 64 <810000000>;
- required-opps = <&rpmhpd_opp_nom>;
- };
- };
};
mdss_dp2: displayport-controller@ae9a000 {
@@ -5662,7 +5638,7 @@
<&usb_1_ss2_qmpphy QMP_USB43DP_DP_VCO_DIV_CLK>,
<&usb_1_ss2_qmpphy QMP_USB43DP_DP_VCO_DIV_CLK>;
- operating-points-v2 = <&mdss_dp2_opp_table>;
+ operating-points-v2 = <&mdss_dp0_opp_table>;
power-domains = <&rpmhpd RPMHPD_MMCX>;
@@ -5693,30 +5669,6 @@
};
};
};
-
- mdss_dp2_opp_table: opp-table {
- compatible = "operating-points-v2";
-
- opp-162000000 {
- opp-hz = /bits/ 64 <162000000>;
- required-opps = <&rpmhpd_opp_low_svs>;
- };
-
- opp-270000000 {
- opp-hz = /bits/ 64 <270000000>;
- required-opps = <&rpmhpd_opp_svs>;
- };
-
- opp-540000000 {
- opp-hz = /bits/ 64 <540000000>;
- required-opps = <&rpmhpd_opp_svs_l1>;
- };
-
- opp-810000000 {
- opp-hz = /bits/ 64 <810000000>;
- required-opps = <&rpmhpd_opp_nom>;
- };
- };
};
mdss_dp3: displayport-controller@aea0000 {
@@ -5779,19 +5731,14 @@
mdss_dp3_opp_table: opp-table {
compatible = "operating-points-v2";
- opp-162000000 {
- opp-hz = /bits/ 64 <162000000>;
- required-opps = <&rpmhpd_opp_low_svs>;
- };
-
opp-270000000 {
opp-hz = /bits/ 64 <270000000>;
- required-opps = <&rpmhpd_opp_svs>;
+ required-opps = <&rpmhpd_opp_low_svs>;
};
- opp-540000000 {
- opp-hz = /bits/ 64 <540000000>;
- required-opps = <&rpmhpd_opp_svs_l1>;
+ opp-594000000 {
+ opp-hz = /bits/ 64 <594000000>;
+ required-opps = <&rpmhpd_opp_svs>;
};
opp-810000000 {
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 618/675] netfilter: nf_tables: remove register tracking infrastructure
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (616 preceding siblings ...)
2026-07-30 14:15 ` [PATCH 6.18 617/675] arm64: dts: qcom: hamoa: Fix OPP tables for all DisplayPort controllers Greg Kroah-Hartman
@ 2026-07-30 14:15 ` Greg Kroah-Hartman
2026-07-30 14:15 ` [PATCH 6.18 619/675] netfilter: nft_fib: reject fib expression on the netdev egress hook Greg Kroah-Hartman
` (61 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:15 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Florian Westphal, Jakub Kicinski,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Florian Westphal <fw@strlen.de>
[ Upstream commit 6b94d081f81dd524626f7aab2b98a9de335edb72 ]
This facility was disabled in commit
9e539c5b6d9c ("netfilter: nf_tables: disable expression reduction infra"),
because not all nft_exprs guarantee they will update the destination
register: some may set NFT_BREAK instead to cancel evaluation of the
rule.
This has been dead code ever since.
There are no plans to salvage this at this time, so remove this.
Signed-off-by: Florian Westphal <fw@strlen.de>
Link: https://patch.msgid.link/20260224205048.4718-10-fw@strlen.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Stable-dep-of: d07955dd34ec ("netfilter: nft_fib: reject fib expression on the netdev egress hook")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
include/net/netfilter/nf_tables.h | 32 ---------
include/net/netfilter/nft_fib.h | 2
include/net/netfilter/nft_meta.h | 3
net/bridge/netfilter/nft_meta_bridge.c | 20 -----
net/bridge/netfilter/nft_reject_bridge.c | 1
net/ipv4/netfilter/nft_dup_ipv4.c | 1
net/ipv4/netfilter/nft_fib_ipv4.c | 2
net/ipv4/netfilter/nft_reject_ipv4.c | 1
net/ipv6/netfilter/nft_dup_ipv6.c | 1
net/ipv6/netfilter/nft_fib_ipv6.c | 2
net/ipv6/netfilter/nft_reject_ipv6.c | 1
net/netfilter/nf_tables_api.c | 67 -------------------
net/netfilter/nft_bitwise.c | 104 -------------------------------
net/netfilter/nft_byteorder.c | 11 ---
net/netfilter/nft_cmp.c | 3
net/netfilter/nft_compat.c | 10 --
net/netfilter/nft_connlimit.c | 1
net/netfilter/nft_counter.c | 1
net/netfilter/nft_ct.c | 46 -------------
net/netfilter/nft_dup_netdev.c | 1
net/netfilter/nft_dynset.c | 1
net/netfilter/nft_exthdr.c | 34 ----------
net/netfilter/nft_fib.c | 42 ------------
net/netfilter/nft_fib_inet.c | 1
net/netfilter/nft_fib_netdev.c | 1
net/netfilter/nft_flow_offload.c | 1
net/netfilter/nft_fwd_netdev.c | 2
net/netfilter/nft_hash.c | 36 ----------
net/netfilter/nft_immediate.c | 12 ---
net/netfilter/nft_last.c | 1
net/netfilter/nft_limit.c | 2
net/netfilter/nft_log.c | 1
net/netfilter/nft_lookup.c | 12 ---
net/netfilter/nft_masq.c | 3
net/netfilter/nft_meta.c | 45 -------------
net/netfilter/nft_nat.c | 2
net/netfilter/nft_numgen.c | 22 ------
net/netfilter/nft_objref.c | 2
net/netfilter/nft_osf.c | 25 -------
net/netfilter/nft_payload.c | 47 --------------
net/netfilter/nft_queue.c | 2
net/netfilter/nft_quota.c | 1
net/netfilter/nft_range.c | 1
net/netfilter/nft_redir.c | 3
net/netfilter/nft_reject_inet.c | 1
net/netfilter/nft_reject_netdev.c | 1
net/netfilter/nft_rt.c | 1
net/netfilter/nft_socket.c | 26 -------
net/netfilter/nft_synproxy.c | 1
net/netfilter/nft_tproxy.c | 1
net/netfilter/nft_tunnel.c | 26 -------
net/netfilter/nft_xfrm.c | 27 --------
52 files changed, 693 deletions(-)
--- a/include/net/netfilter/nf_tables.h
+++ b/include/net/netfilter/nf_tables.h
@@ -123,17 +123,6 @@ struct nft_regs {
};
};
-struct nft_regs_track {
- struct {
- const struct nft_expr *selector;
- const struct nft_expr *bitwise;
- u8 num_reg;
- } regs[NFT_REG32_NUM];
-
- const struct nft_expr *cur;
- const struct nft_expr *last;
-};
-
/* Store/load an u8, u16 or u64 integer to/from the u32 data register.
*
* Note, when using concatenations, register allocation happens at 32-bit
@@ -433,8 +422,6 @@ int nft_expr_clone(struct nft_expr *dst,
void nft_expr_destroy(const struct nft_ctx *ctx, struct nft_expr *expr);
int nft_expr_dump(struct sk_buff *skb, unsigned int attr,
const struct nft_expr *expr, bool reset);
-bool nft_expr_reduce_bitwise(struct nft_regs_track *track,
- const struct nft_expr *expr);
struct nft_set_ext;
@@ -949,7 +936,6 @@ struct nft_offload_ctx;
* @destroy_clone: destruction clone function
* @dump: function to dump parameters
* @validate: validate expression, called during loop detection
- * @reduce: reduce expression
* @gc: garbage collection expression
* @offload: hardware offload expression
* @offload_action: function to report true/false to allocate one slot or not in the flow
@@ -983,8 +969,6 @@ struct nft_expr_ops {
bool reset);
int (*validate)(const struct nft_ctx *ctx,
const struct nft_expr *expr);
- bool (*reduce)(struct nft_regs_track *track,
- const struct nft_expr *expr);
bool (*gc)(struct net *net,
const struct nft_expr *expr);
int (*offload)(struct nft_offload_ctx *ctx,
@@ -1967,20 +1951,4 @@ static inline u64 nft_net_tstamp(const s
return nft_pernet(net)->tstamp;
}
-#define __NFT_REDUCE_READONLY 1UL
-#define NFT_REDUCE_READONLY (void *)__NFT_REDUCE_READONLY
-
-void nft_reg_track_update(struct nft_regs_track *track,
- const struct nft_expr *expr, u8 dreg, u8 len);
-void nft_reg_track_cancel(struct nft_regs_track *track, u8 dreg, u8 len);
-void __nft_reg_track_cancel(struct nft_regs_track *track, u8 dreg);
-
-static inline bool nft_reg_track_cmp(struct nft_regs_track *track,
- const struct nft_expr *expr, u8 dreg)
-{
- return track->regs[dreg].selector &&
- track->regs[dreg].selector->ops == expr->ops &&
- track->regs[dreg].num_reg == 0;
-}
-
#endif /* _NET_NF_TABLES_H */
--- a/include/net/netfilter/nft_fib.h
+++ b/include/net/netfilter/nft_fib.h
@@ -66,6 +66,4 @@ void nft_fib6_eval(const struct nft_expr
void nft_fib_store_result(void *reg, const struct nft_fib *priv,
const struct net_device *dev);
-bool nft_fib_reduce(struct nft_regs_track *track,
- const struct nft_expr *expr);
#endif
--- a/include/net/netfilter/nft_meta.h
+++ b/include/net/netfilter/nft_meta.h
@@ -45,9 +45,6 @@ int nft_meta_get_validate(const struct n
int nft_meta_set_validate(const struct nft_ctx *ctx,
const struct nft_expr *expr);
-bool nft_meta_get_reduce(struct nft_regs_track *track,
- const struct nft_expr *expr);
-
struct nft_inner_tun_ctx;
void nft_meta_inner_eval(const struct nft_expr *expr,
struct nft_regs *regs, const struct nft_pktinfo *pkt,
--- a/net/bridge/netfilter/nft_meta_bridge.c
+++ b/net/bridge/netfilter/nft_meta_bridge.c
@@ -134,7 +134,6 @@ static const struct nft_expr_ops nft_met
.init = nft_meta_bridge_get_init,
.validate = nft_meta_bridge_get_validate,
.dump = nft_meta_get_dump,
- .reduce = nft_meta_get_reduce,
};
static void nft_meta_bridge_set_eval(const struct nft_expr *expr,
@@ -181,24 +180,6 @@ static int nft_meta_bridge_set_init(cons
return 0;
}
-static bool nft_meta_bridge_set_reduce(struct nft_regs_track *track,
- const struct nft_expr *expr)
-{
- int i;
-
- for (i = 0; i < NFT_REG32_NUM; i++) {
- if (!track->regs[i].selector)
- continue;
-
- if (track->regs[i].selector->ops != &nft_meta_bridge_get_ops)
- continue;
-
- __nft_reg_track_cancel(track, i);
- }
-
- return false;
-}
-
static int nft_meta_bridge_set_validate(const struct nft_ctx *ctx,
const struct nft_expr *expr)
{
@@ -223,7 +204,6 @@ static const struct nft_expr_ops nft_met
.init = nft_meta_bridge_set_init,
.destroy = nft_meta_set_destroy,
.dump = nft_meta_set_dump,
- .reduce = nft_meta_bridge_set_reduce,
.validate = nft_meta_bridge_set_validate,
};
--- a/net/bridge/netfilter/nft_reject_bridge.c
+++ b/net/bridge/netfilter/nft_reject_bridge.c
@@ -184,7 +184,6 @@ static const struct nft_expr_ops nft_rej
.init = nft_reject_init,
.dump = nft_reject_dump,
.validate = nft_reject_bridge_validate,
- .reduce = NFT_REDUCE_READONLY,
};
static struct nft_expr_type nft_reject_bridge_type __read_mostly = {
--- a/net/ipv4/netfilter/nft_dup_ipv4.c
+++ b/net/ipv4/netfilter/nft_dup_ipv4.c
@@ -76,7 +76,6 @@ static const struct nft_expr_ops nft_dup
.eval = nft_dup_ipv4_eval,
.init = nft_dup_ipv4_init,
.dump = nft_dup_ipv4_dump,
- .reduce = NFT_REDUCE_READONLY,
};
static const struct nla_policy nft_dup_ipv4_policy[NFTA_DUP_MAX + 1] = {
--- a/net/ipv4/netfilter/nft_fib_ipv4.c
+++ b/net/ipv4/netfilter/nft_fib_ipv4.c
@@ -163,7 +163,6 @@ static const struct nft_expr_ops nft_fib
.init = nft_fib_init,
.dump = nft_fib_dump,
.validate = nft_fib_validate,
- .reduce = nft_fib_reduce,
};
static const struct nft_expr_ops nft_fib4_ops = {
@@ -173,7 +172,6 @@ static const struct nft_expr_ops nft_fib
.init = nft_fib_init,
.dump = nft_fib_dump,
.validate = nft_fib_validate,
- .reduce = nft_fib_reduce,
};
static const struct nft_expr_ops *
--- a/net/ipv4/netfilter/nft_reject_ipv4.c
+++ b/net/ipv4/netfilter/nft_reject_ipv4.c
@@ -45,7 +45,6 @@ static const struct nft_expr_ops nft_rej
.init = nft_reject_init,
.dump = nft_reject_dump,
.validate = nft_reject_validate,
- .reduce = NFT_REDUCE_READONLY,
};
static struct nft_expr_type nft_reject_ipv4_type __read_mostly = {
--- a/net/ipv6/netfilter/nft_dup_ipv6.c
+++ b/net/ipv6/netfilter/nft_dup_ipv6.c
@@ -74,7 +74,6 @@ static const struct nft_expr_ops nft_dup
.eval = nft_dup_ipv6_eval,
.init = nft_dup_ipv6_init,
.dump = nft_dup_ipv6_dump,
- .reduce = NFT_REDUCE_READONLY,
};
static const struct nla_policy nft_dup_ipv6_policy[NFTA_DUP_MAX + 1] = {
--- a/net/ipv6/netfilter/nft_fib_ipv6.c
+++ b/net/ipv6/netfilter/nft_fib_ipv6.c
@@ -225,7 +225,6 @@ static const struct nft_expr_ops nft_fib
.init = nft_fib_init,
.dump = nft_fib_dump,
.validate = nft_fib_validate,
- .reduce = nft_fib_reduce,
};
static const struct nft_expr_ops nft_fib6_ops = {
@@ -235,7 +234,6 @@ static const struct nft_expr_ops nft_fib
.init = nft_fib_init,
.dump = nft_fib_dump,
.validate = nft_fib_validate,
- .reduce = nft_fib_reduce,
};
static const struct nft_expr_ops *
--- a/net/ipv6/netfilter/nft_reject_ipv6.c
+++ b/net/ipv6/netfilter/nft_reject_ipv6.c
@@ -46,7 +46,6 @@ static const struct nft_expr_ops nft_rej
.init = nft_reject_init,
.dump = nft_reject_dump,
.validate = nft_reject_validate,
- .reduce = NFT_REDUCE_READONLY,
};
static struct nft_expr_type nft_reject_ipv6_type __read_mostly = {
--- a/net/netfilter/nf_tables_api.c
+++ b/net/netfilter/nf_tables_api.c
@@ -939,58 +939,6 @@ static int nft_delflowtable(struct nft_c
return 0;
}
-static void __nft_reg_track_clobber(struct nft_regs_track *track, u8 dreg)
-{
- int i;
-
- for (i = track->regs[dreg].num_reg; i > 0; i--)
- __nft_reg_track_cancel(track, dreg - i);
-}
-
-static void __nft_reg_track_update(struct nft_regs_track *track,
- const struct nft_expr *expr,
- u8 dreg, u8 num_reg)
-{
- track->regs[dreg].selector = expr;
- track->regs[dreg].bitwise = NULL;
- track->regs[dreg].num_reg = num_reg;
-}
-
-void nft_reg_track_update(struct nft_regs_track *track,
- const struct nft_expr *expr, u8 dreg, u8 len)
-{
- unsigned int regcount;
- int i;
-
- __nft_reg_track_clobber(track, dreg);
-
- regcount = DIV_ROUND_UP(len, NFT_REG32_SIZE);
- for (i = 0; i < regcount; i++, dreg++)
- __nft_reg_track_update(track, expr, dreg, i);
-}
-EXPORT_SYMBOL_GPL(nft_reg_track_update);
-
-void nft_reg_track_cancel(struct nft_regs_track *track, u8 dreg, u8 len)
-{
- unsigned int regcount;
- int i;
-
- __nft_reg_track_clobber(track, dreg);
-
- regcount = DIV_ROUND_UP(len, NFT_REG32_SIZE);
- for (i = 0; i < regcount; i++, dreg++)
- __nft_reg_track_cancel(track, dreg);
-}
-EXPORT_SYMBOL_GPL(nft_reg_track_cancel);
-
-void __nft_reg_track_cancel(struct nft_regs_track *track, u8 dreg)
-{
- track->regs[dreg].selector = NULL;
- track->regs[dreg].bitwise = NULL;
- track->regs[dreg].num_reg = 0;
-}
-EXPORT_SYMBOL_GPL(__nft_reg_track_cancel);
-
/*
* Tables
*/
@@ -10173,16 +10121,9 @@ void nf_tables_trans_destroy_flush_work(
}
EXPORT_SYMBOL_GPL(nf_tables_trans_destroy_flush_work);
-static bool nft_expr_reduce(struct nft_regs_track *track,
- const struct nft_expr *expr)
-{
- return false;
-}
-
static int nf_tables_commit_chain_prepare(struct net *net, struct nft_chain *chain)
{
const struct nft_expr *expr, *last;
- struct nft_regs_track track = {};
unsigned int size, data_size;
void *data, *data_boundary;
struct nft_rule_dp *prule;
@@ -10219,15 +10160,7 @@ static int nf_tables_commit_chain_prepar
return -ENOMEM;
size = 0;
- track.last = nft_expr_last(rule);
nft_rule_for_each_expr(expr, last, rule) {
- track.cur = expr;
-
- if (nft_expr_reduce(&track, expr)) {
- expr = track.cur;
- continue;
- }
-
if (WARN_ON_ONCE(data + size + expr->ops->size > data_boundary))
return -ENOMEM;
--- a/net/netfilter/nft_bitwise.c
+++ b/net/netfilter/nft_bitwise.c
@@ -402,61 +402,12 @@ static int nft_bitwise_offload(struct nf
return 0;
}
-static bool nft_bitwise_reduce(struct nft_regs_track *track,
- const struct nft_expr *expr)
-{
- const struct nft_bitwise *priv = nft_expr_priv(expr);
- const struct nft_bitwise *bitwise;
- unsigned int regcount;
- u8 dreg;
- int i;
-
- if (!track->regs[priv->sreg].selector)
- return false;
-
- bitwise = nft_expr_priv(track->regs[priv->dreg].selector);
- if (track->regs[priv->sreg].selector == track->regs[priv->dreg].selector &&
- track->regs[priv->sreg].num_reg == 0 &&
- track->regs[priv->dreg].bitwise &&
- track->regs[priv->dreg].bitwise->ops == expr->ops &&
- priv->sreg == bitwise->sreg &&
- priv->sreg2 == bitwise->sreg2 &&
- priv->dreg == bitwise->dreg &&
- priv->op == bitwise->op &&
- priv->len == bitwise->len &&
- !memcmp(&priv->mask, &bitwise->mask, sizeof(priv->mask)) &&
- !memcmp(&priv->xor, &bitwise->xor, sizeof(priv->xor)) &&
- !memcmp(&priv->data, &bitwise->data, sizeof(priv->data))) {
- track->cur = expr;
- return true;
- }
-
- if (track->regs[priv->sreg].bitwise ||
- track->regs[priv->sreg].num_reg != 0) {
- nft_reg_track_cancel(track, priv->dreg, priv->len);
- return false;
- }
-
- if (priv->sreg != priv->dreg) {
- nft_reg_track_update(track, track->regs[priv->sreg].selector,
- priv->dreg, priv->len);
- }
-
- dreg = priv->dreg;
- regcount = DIV_ROUND_UP(priv->len, NFT_REG32_SIZE);
- for (i = 0; i < regcount; i++, dreg++)
- track->regs[dreg].bitwise = expr;
-
- return false;
-}
-
static const struct nft_expr_ops nft_bitwise_ops = {
.type = &nft_bitwise_type,
.size = NFT_EXPR_SIZE(sizeof(struct nft_bitwise)),
.eval = nft_bitwise_eval,
.init = nft_bitwise_init,
.dump = nft_bitwise_dump,
- .reduce = nft_bitwise_reduce,
.offload = nft_bitwise_offload,
};
@@ -559,48 +510,12 @@ static int nft_bitwise_fast_offload(stru
return 0;
}
-static bool nft_bitwise_fast_reduce(struct nft_regs_track *track,
- const struct nft_expr *expr)
-{
- const struct nft_bitwise_fast_expr *priv = nft_expr_priv(expr);
- const struct nft_bitwise_fast_expr *bitwise;
-
- if (!track->regs[priv->sreg].selector)
- return false;
-
- bitwise = nft_expr_priv(track->regs[priv->dreg].selector);
- if (track->regs[priv->sreg].selector == track->regs[priv->dreg].selector &&
- track->regs[priv->dreg].bitwise &&
- track->regs[priv->dreg].bitwise->ops == expr->ops &&
- priv->sreg == bitwise->sreg &&
- priv->dreg == bitwise->dreg &&
- priv->mask == bitwise->mask &&
- priv->xor == bitwise->xor) {
- track->cur = expr;
- return true;
- }
-
- if (track->regs[priv->sreg].bitwise) {
- nft_reg_track_cancel(track, priv->dreg, NFT_REG32_SIZE);
- return false;
- }
-
- if (priv->sreg != priv->dreg) {
- track->regs[priv->dreg].selector =
- track->regs[priv->sreg].selector;
- }
- track->regs[priv->dreg].bitwise = expr;
-
- return false;
-}
-
const struct nft_expr_ops nft_bitwise_fast_ops = {
.type = &nft_bitwise_type,
.size = NFT_EXPR_SIZE(sizeof(struct nft_bitwise_fast_expr)),
.eval = NULL, /* inlined */
.init = nft_bitwise_fast_init,
.dump = nft_bitwise_fast_dump,
- .reduce = nft_bitwise_fast_reduce,
.offload = nft_bitwise_fast_offload,
};
@@ -637,22 +552,3 @@ struct nft_expr_type nft_bitwise_type __
.maxattr = NFTA_BITWISE_MAX,
.owner = THIS_MODULE,
};
-
-bool nft_expr_reduce_bitwise(struct nft_regs_track *track,
- const struct nft_expr *expr)
-{
- const struct nft_expr *last = track->last;
- const struct nft_expr *next;
-
- if (expr == last)
- return false;
-
- next = nft_expr_next(expr);
- if (next->ops == &nft_bitwise_ops)
- return nft_bitwise_reduce(track, next);
- else if (next->ops == &nft_bitwise_fast_ops)
- return nft_bitwise_fast_reduce(track, next);
-
- return false;
-}
-EXPORT_SYMBOL_GPL(nft_expr_reduce_bitwise);
--- a/net/netfilter/nft_byteorder.c
+++ b/net/netfilter/nft_byteorder.c
@@ -177,23 +177,12 @@ nla_put_failure:
return -1;
}
-static bool nft_byteorder_reduce(struct nft_regs_track *track,
- const struct nft_expr *expr)
-{
- struct nft_byteorder *priv = nft_expr_priv(expr);
-
- nft_reg_track_cancel(track, priv->dreg, priv->len);
-
- return false;
-}
-
static const struct nft_expr_ops nft_byteorder_ops = {
.type = &nft_byteorder_type,
.size = NFT_EXPR_SIZE(sizeof(struct nft_byteorder)),
.eval = nft_byteorder_eval,
.init = nft_byteorder_init,
.dump = nft_byteorder_dump,
- .reduce = nft_byteorder_reduce,
};
struct nft_expr_type nft_byteorder_type __read_mostly = {
--- a/net/netfilter/nft_cmp.c
+++ b/net/netfilter/nft_cmp.c
@@ -190,7 +190,6 @@ static const struct nft_expr_ops nft_cmp
.eval = nft_cmp_eval,
.init = nft_cmp_init,
.dump = nft_cmp_dump,
- .reduce = NFT_REDUCE_READONLY,
.offload = nft_cmp_offload,
};
@@ -282,7 +281,6 @@ const struct nft_expr_ops nft_cmp_fast_o
.eval = NULL, /* inlined */
.init = nft_cmp_fast_init,
.dump = nft_cmp_fast_dump,
- .reduce = NFT_REDUCE_READONLY,
.offload = nft_cmp_fast_offload,
};
@@ -376,7 +374,6 @@ const struct nft_expr_ops nft_cmp16_fast
.eval = NULL, /* inlined */
.init = nft_cmp16_fast_init,
.dump = nft_cmp16_fast_dump,
- .reduce = NFT_REDUCE_READONLY,
.offload = nft_cmp16_fast_offload,
};
--- a/net/netfilter/nft_compat.c
+++ b/net/netfilter/nft_compat.c
@@ -794,14 +794,6 @@ static const struct nfnetlink_subsystem
static struct nft_expr_type nft_match_type;
-static bool nft_match_reduce(struct nft_regs_track *track,
- const struct nft_expr *expr)
-{
- const struct xt_match *match = expr->ops->data;
-
- return strcmp(match->name, "comment") == 0;
-}
-
static const struct nft_expr_ops *
nft_match_select_ops(const struct nft_ctx *ctx,
const struct nlattr * const tb[])
@@ -844,7 +836,6 @@ nft_match_select_ops(const struct nft_ct
ops->dump = nft_match_dump;
ops->validate = nft_match_validate;
ops->data = match;
- ops->reduce = nft_match_reduce;
matchsize = NFT_EXPR_SIZE(XT_ALIGN(match->matchsize));
if (matchsize > NFT_MATCH_LARGE_THRESH) {
@@ -933,7 +924,6 @@ nft_target_select_ops(const struct nft_c
ops->destroy = nft_target_destroy;
ops->dump = nft_target_dump;
ops->data = target;
- ops->reduce = NFT_REDUCE_READONLY;
if (family == NFPROTO_BRIDGE) {
ops->eval = nft_target_eval_bridge;
--- a/net/netfilter/nft_connlimit.c
+++ b/net/netfilter/nft_connlimit.c
@@ -247,7 +247,6 @@ static const struct nft_expr_ops nft_con
.destroy_clone = nft_connlimit_destroy_clone,
.dump = nft_connlimit_dump,
.gc = nft_connlimit_gc,
- .reduce = NFT_REDUCE_READONLY,
};
static struct nft_expr_type nft_connlimit_type __read_mostly = {
--- a/net/netfilter/nft_counter.c
+++ b/net/netfilter/nft_counter.c
@@ -313,7 +313,6 @@ static const struct nft_expr_ops nft_cou
.destroy_clone = nft_counter_destroy,
.dump = nft_counter_dump,
.clone = nft_counter_clone,
- .reduce = NFT_REDUCE_READONLY,
.offload = nft_counter_offload,
.offload_stats = nft_counter_offload_stats,
};
--- a/net/netfilter/nft_ct.c
+++ b/net/netfilter/nft_ct.c
@@ -698,29 +698,6 @@ nla_put_failure:
return -1;
}
-static bool nft_ct_get_reduce(struct nft_regs_track *track,
- const struct nft_expr *expr)
-{
- const struct nft_ct *priv = nft_expr_priv(expr);
- const struct nft_ct *ct;
-
- if (!nft_reg_track_cmp(track, expr, priv->dreg)) {
- nft_reg_track_update(track, expr, priv->dreg, priv->len);
- return false;
- }
-
- ct = nft_expr_priv(track->regs[priv->dreg].selector);
- if (priv->key != ct->key) {
- nft_reg_track_update(track, expr, priv->dreg, priv->len);
- return false;
- }
-
- if (!track->regs[priv->dreg].bitwise)
- return true;
-
- return nft_expr_reduce_bitwise(track, expr);
-}
-
static int nft_ct_set_dump(struct sk_buff *skb,
const struct nft_expr *expr, bool reset)
{
@@ -755,27 +732,8 @@ static const struct nft_expr_ops nft_ct_
.init = nft_ct_get_init,
.destroy = nft_ct_get_destroy,
.dump = nft_ct_get_dump,
- .reduce = nft_ct_get_reduce,
};
-static bool nft_ct_set_reduce(struct nft_regs_track *track,
- const struct nft_expr *expr)
-{
- int i;
-
- for (i = 0; i < NFT_REG32_NUM; i++) {
- if (!track->regs[i].selector)
- continue;
-
- if (track->regs[i].selector->ops != &nft_ct_get_ops)
- continue;
-
- __nft_reg_track_cancel(track, i);
- }
-
- return false;
-}
-
#ifdef CONFIG_MITIGATION_RETPOLINE
static const struct nft_expr_ops nft_ct_get_fast_ops = {
.type = &nft_ct_type,
@@ -784,7 +742,6 @@ static const struct nft_expr_ops nft_ct_
.init = nft_ct_get_init,
.destroy = nft_ct_get_destroy,
.dump = nft_ct_get_dump,
- .reduce = nft_ct_set_reduce,
};
#endif
@@ -795,7 +752,6 @@ static const struct nft_expr_ops nft_ct_
.init = nft_ct_set_init,
.destroy = nft_ct_set_destroy,
.dump = nft_ct_set_dump,
- .reduce = nft_ct_set_reduce,
};
#ifdef CONFIG_NF_CONNTRACK_ZONES
@@ -806,7 +762,6 @@ static const struct nft_expr_ops nft_ct_
.init = nft_ct_set_init,
.destroy = nft_ct_set_destroy,
.dump = nft_ct_set_dump,
- .reduce = nft_ct_set_reduce,
};
#endif
@@ -876,7 +831,6 @@ static const struct nft_expr_ops nft_not
.type = &nft_notrack_type,
.size = NFT_EXPR_SIZE(0),
.eval = nft_notrack_eval,
- .reduce = NFT_REDUCE_READONLY,
};
static struct nft_expr_type nft_notrack_type __read_mostly = {
--- a/net/netfilter/nft_dup_netdev.c
+++ b/net/netfilter/nft_dup_netdev.c
@@ -80,7 +80,6 @@ static const struct nft_expr_ops nft_dup
.eval = nft_dup_netdev_eval,
.init = nft_dup_netdev_init,
.dump = nft_dup_netdev_dump,
- .reduce = NFT_REDUCE_READONLY,
.offload = nft_dup_netdev_offload,
.offload_action = nft_dup_netdev_offload_action,
};
--- a/net/netfilter/nft_dynset.c
+++ b/net/netfilter/nft_dynset.c
@@ -429,7 +429,6 @@ static const struct nft_expr_ops nft_dyn
.activate = nft_dynset_activate,
.deactivate = nft_dynset_deactivate,
.dump = nft_dynset_dump,
- .reduce = NFT_REDUCE_READONLY,
};
struct nft_expr_type nft_dynset_type __read_mostly = {
--- a/net/netfilter/nft_exthdr.c
+++ b/net/netfilter/nft_exthdr.c
@@ -705,40 +705,12 @@ static int nft_exthdr_dump_strip(struct
return nft_exthdr_dump_common(skb, priv);
}
-static bool nft_exthdr_reduce(struct nft_regs_track *track,
- const struct nft_expr *expr)
-{
- const struct nft_exthdr *priv = nft_expr_priv(expr);
- const struct nft_exthdr *exthdr;
-
- if (!nft_reg_track_cmp(track, expr, priv->dreg)) {
- nft_reg_track_update(track, expr, priv->dreg, priv->len);
- return false;
- }
-
- exthdr = nft_expr_priv(track->regs[priv->dreg].selector);
- if (priv->type != exthdr->type ||
- priv->op != exthdr->op ||
- priv->flags != exthdr->flags ||
- priv->offset != exthdr->offset ||
- priv->len != exthdr->len) {
- nft_reg_track_update(track, expr, priv->dreg, priv->len);
- return false;
- }
-
- if (!track->regs[priv->dreg].bitwise)
- return true;
-
- return nft_expr_reduce_bitwise(track, expr);
-}
-
static const struct nft_expr_ops nft_exthdr_ipv6_ops = {
.type = &nft_exthdr_type,
.size = NFT_EXPR_SIZE(sizeof(struct nft_exthdr)),
.eval = nft_exthdr_ipv6_eval,
.init = nft_exthdr_init,
.dump = nft_exthdr_dump,
- .reduce = nft_exthdr_reduce,
};
static const struct nft_expr_ops nft_exthdr_ipv4_ops = {
@@ -747,7 +719,6 @@ static const struct nft_expr_ops nft_ext
.eval = nft_exthdr_ipv4_eval,
.init = nft_exthdr_ipv4_init,
.dump = nft_exthdr_dump,
- .reduce = nft_exthdr_reduce,
};
static const struct nft_expr_ops nft_exthdr_tcp_ops = {
@@ -756,7 +727,6 @@ static const struct nft_expr_ops nft_ext
.eval = nft_exthdr_tcp_eval,
.init = nft_exthdr_init,
.dump = nft_exthdr_dump,
- .reduce = nft_exthdr_reduce,
};
static const struct nft_expr_ops nft_exthdr_tcp_set_ops = {
@@ -765,7 +735,6 @@ static const struct nft_expr_ops nft_ext
.eval = nft_exthdr_tcp_set_eval,
.init = nft_exthdr_tcp_set_init,
.dump = nft_exthdr_dump_set,
- .reduce = NFT_REDUCE_READONLY,
};
static const struct nft_expr_ops nft_exthdr_tcp_strip_ops = {
@@ -774,7 +743,6 @@ static const struct nft_expr_ops nft_ext
.eval = nft_exthdr_tcp_strip_eval,
.init = nft_exthdr_tcp_strip_init,
.dump = nft_exthdr_dump_strip,
- .reduce = NFT_REDUCE_READONLY,
};
static const struct nft_expr_ops nft_exthdr_sctp_ops = {
@@ -783,7 +751,6 @@ static const struct nft_expr_ops nft_ext
.eval = nft_exthdr_sctp_eval,
.init = nft_exthdr_init,
.dump = nft_exthdr_dump,
- .reduce = nft_exthdr_reduce,
};
#ifdef CONFIG_NFT_EXTHDR_DCCP
@@ -793,7 +760,6 @@ static const struct nft_expr_ops nft_ext
.eval = nft_exthdr_dccp_eval,
.init = nft_exthdr_dccp_init,
.dump = nft_exthdr_dump,
- .reduce = nft_exthdr_reduce,
};
#endif
--- a/net/netfilter/nft_fib.c
+++ b/net/netfilter/nft_fib.c
@@ -168,48 +168,6 @@ void nft_fib_store_result(void *reg, con
}
EXPORT_SYMBOL_GPL(nft_fib_store_result);
-bool nft_fib_reduce(struct nft_regs_track *track,
- const struct nft_expr *expr)
-{
- const struct nft_fib *priv = nft_expr_priv(expr);
- unsigned int len = NFT_REG32_SIZE;
- const struct nft_fib *fib;
-
- switch (priv->result) {
- case NFT_FIB_RESULT_OIF:
- break;
- case NFT_FIB_RESULT_OIFNAME:
- if (priv->flags & NFTA_FIB_F_PRESENT)
- len = NFT_REG32_SIZE;
- else
- len = IFNAMSIZ;
- break;
- case NFT_FIB_RESULT_ADDRTYPE:
- break;
- default:
- WARN_ON_ONCE(1);
- break;
- }
-
- if (!nft_reg_track_cmp(track, expr, priv->dreg)) {
- nft_reg_track_update(track, expr, priv->dreg, len);
- return false;
- }
-
- fib = nft_expr_priv(track->regs[priv->dreg].selector);
- if (priv->result != fib->result ||
- priv->flags != fib->flags) {
- nft_reg_track_update(track, expr, priv->dreg, len);
- return false;
- }
-
- if (!track->regs[priv->dreg].bitwise)
- return true;
-
- return false;
-}
-EXPORT_SYMBOL_GPL(nft_fib_reduce);
-
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Query routing table from nftables");
MODULE_AUTHOR("Florian Westphal <fw@strlen.de>");
--- a/net/netfilter/nft_fib_inet.c
+++ b/net/netfilter/nft_fib_inet.c
@@ -49,7 +49,6 @@ static const struct nft_expr_ops nft_fib
.init = nft_fib_init,
.dump = nft_fib_dump,
.validate = nft_fib_validate,
- .reduce = nft_fib_reduce,
};
static struct nft_expr_type nft_fib_inet_type __read_mostly = {
--- a/net/netfilter/nft_fib_netdev.c
+++ b/net/netfilter/nft_fib_netdev.c
@@ -58,7 +58,6 @@ static const struct nft_expr_ops nft_fib
.init = nft_fib_init,
.dump = nft_fib_dump,
.validate = nft_fib_validate,
- .reduce = nft_fib_reduce,
};
static struct nft_expr_type nft_fib_netdev_type __read_mostly = {
--- a/net/netfilter/nft_flow_offload.c
+++ b/net/netfilter/nft_flow_offload.c
@@ -224,7 +224,6 @@ static const struct nft_expr_ops nft_flo
.destroy = nft_flow_offload_destroy,
.validate = nft_flow_offload_validate,
.dump = nft_flow_offload_dump,
- .reduce = NFT_REDUCE_READONLY,
};
static struct nft_expr_type nft_flow_offload_type __read_mostly = {
--- a/net/netfilter/nft_fwd_netdev.c
+++ b/net/netfilter/nft_fwd_netdev.c
@@ -228,7 +228,6 @@ static const struct nft_expr_ops nft_fwd
.init = nft_fwd_neigh_init,
.dump = nft_fwd_neigh_dump,
.validate = nft_fwd_validate,
- .reduce = NFT_REDUCE_READONLY,
};
static const struct nft_expr_ops nft_fwd_netdev_ops = {
@@ -238,7 +237,6 @@ static const struct nft_expr_ops nft_fwd
.init = nft_fwd_netdev_init,
.dump = nft_fwd_netdev_dump,
.validate = nft_fwd_validate,
- .reduce = NFT_REDUCE_READONLY,
.offload = nft_fwd_netdev_offload,
.offload_action = nft_fwd_netdev_offload_action,
};
--- a/net/netfilter/nft_hash.c
+++ b/net/netfilter/nft_hash.c
@@ -166,16 +166,6 @@ nla_put_failure:
return -1;
}
-static bool nft_jhash_reduce(struct nft_regs_track *track,
- const struct nft_expr *expr)
-{
- const struct nft_jhash *priv = nft_expr_priv(expr);
-
- nft_reg_track_cancel(track, priv->dreg, sizeof(u32));
-
- return false;
-}
-
static int nft_symhash_dump(struct sk_buff *skb,
const struct nft_expr *expr, bool reset)
{
@@ -196,30 +186,6 @@ nla_put_failure:
return -1;
}
-static bool nft_symhash_reduce(struct nft_regs_track *track,
- const struct nft_expr *expr)
-{
- struct nft_symhash *priv = nft_expr_priv(expr);
- struct nft_symhash *symhash;
-
- if (!nft_reg_track_cmp(track, expr, priv->dreg)) {
- nft_reg_track_update(track, expr, priv->dreg, sizeof(u32));
- return false;
- }
-
- symhash = nft_expr_priv(track->regs[priv->dreg].selector);
- if (priv->offset != symhash->offset ||
- priv->modulus != symhash->modulus) {
- nft_reg_track_update(track, expr, priv->dreg, sizeof(u32));
- return false;
- }
-
- if (!track->regs[priv->dreg].bitwise)
- return true;
-
- return false;
-}
-
static struct nft_expr_type nft_hash_type;
static const struct nft_expr_ops nft_jhash_ops = {
.type = &nft_hash_type,
@@ -227,7 +193,6 @@ static const struct nft_expr_ops nft_jha
.eval = nft_jhash_eval,
.init = nft_jhash_init,
.dump = nft_jhash_dump,
- .reduce = nft_jhash_reduce,
};
static const struct nft_expr_ops nft_symhash_ops = {
@@ -236,7 +201,6 @@ static const struct nft_expr_ops nft_sym
.eval = nft_symhash_eval,
.init = nft_symhash_init,
.dump = nft_symhash_dump,
- .reduce = nft_symhash_reduce,
};
static const struct nft_expr_ops *
--- a/net/netfilter/nft_immediate.c
+++ b/net/netfilter/nft_immediate.c
@@ -320,17 +320,6 @@ static bool nft_immediate_offload_action
return false;
}
-static bool nft_immediate_reduce(struct nft_regs_track *track,
- const struct nft_expr *expr)
-{
- const struct nft_immediate_expr *priv = nft_expr_priv(expr);
-
- if (priv->dreg != NFT_REG_VERDICT)
- nft_reg_track_cancel(track, priv->dreg, priv->dlen);
-
- return false;
-}
-
static const struct nft_expr_ops nft_imm_ops = {
.type = &nft_imm_type,
.size = NFT_EXPR_SIZE(sizeof(struct nft_immediate_expr)),
@@ -341,7 +330,6 @@ static const struct nft_expr_ops nft_imm
.destroy = nft_immediate_destroy,
.dump = nft_immediate_dump,
.validate = nft_immediate_validate,
- .reduce = nft_immediate_reduce,
.offload = nft_immediate_offload,
.offload_action = nft_immediate_offload_action,
};
--- a/net/netfilter/nft_last.c
+++ b/net/netfilter/nft_last.c
@@ -125,7 +125,6 @@ static const struct nft_expr_ops nft_las
.destroy = nft_last_destroy,
.clone = nft_last_clone,
.dump = nft_last_dump,
- .reduce = NFT_REDUCE_READONLY,
};
struct nft_expr_type nft_last_type __read_mostly = {
--- a/net/netfilter/nft_limit.c
+++ b/net/netfilter/nft_limit.c
@@ -243,7 +243,6 @@ static const struct nft_expr_ops nft_lim
.destroy = nft_limit_pkts_destroy,
.clone = nft_limit_pkts_clone,
.dump = nft_limit_pkts_dump,
- .reduce = NFT_REDUCE_READONLY,
};
static void nft_limit_bytes_eval(const struct nft_expr *expr,
@@ -299,7 +298,6 @@ static const struct nft_expr_ops nft_lim
.dump = nft_limit_bytes_dump,
.clone = nft_limit_bytes_clone,
.destroy = nft_limit_bytes_destroy,
- .reduce = NFT_REDUCE_READONLY,
};
static const struct nft_expr_ops *
--- a/net/netfilter/nft_log.c
+++ b/net/netfilter/nft_log.c
@@ -291,7 +291,6 @@ static const struct nft_expr_ops nft_log
.init = nft_log_init,
.destroy = nft_log_destroy,
.dump = nft_log_dump,
- .reduce = NFT_REDUCE_READONLY,
};
static struct nft_expr_type nft_log_type __read_mostly = {
--- a/net/netfilter/nft_lookup.c
+++ b/net/netfilter/nft_lookup.c
@@ -269,17 +269,6 @@ static int nft_lookup_validate(const str
return 0;
}
-static bool nft_lookup_reduce(struct nft_regs_track *track,
- const struct nft_expr *expr)
-{
- const struct nft_lookup *priv = nft_expr_priv(expr);
-
- if (priv->set->flags & NFT_SET_MAP)
- nft_reg_track_cancel(track, priv->dreg, priv->set->dlen);
-
- return false;
-}
-
static const struct nft_expr_ops nft_lookup_ops = {
.type = &nft_lookup_type,
.size = NFT_EXPR_SIZE(sizeof(struct nft_lookup)),
@@ -290,7 +279,6 @@ static const struct nft_expr_ops nft_loo
.destroy = nft_lookup_destroy,
.dump = nft_lookup_dump,
.validate = nft_lookup_validate,
- .reduce = nft_lookup_reduce,
};
struct nft_expr_type nft_lookup_type __read_mostly = {
--- a/net/netfilter/nft_masq.c
+++ b/net/netfilter/nft_masq.c
@@ -143,7 +143,6 @@ static const struct nft_expr_ops nft_mas
.destroy = nft_masq_ipv4_destroy,
.dump = nft_masq_dump,
.validate = nft_masq_validate,
- .reduce = NFT_REDUCE_READONLY,
};
static struct nft_expr_type nft_masq_ipv4_type __read_mostly = {
@@ -171,7 +170,6 @@ static const struct nft_expr_ops nft_mas
.destroy = nft_masq_ipv6_destroy,
.dump = nft_masq_dump,
.validate = nft_masq_validate,
- .reduce = NFT_REDUCE_READONLY,
};
static struct nft_expr_type nft_masq_ipv6_type __read_mostly = {
@@ -213,7 +211,6 @@ static const struct nft_expr_ops nft_mas
.destroy = nft_masq_inet_destroy,
.dump = nft_masq_dump,
.validate = nft_masq_validate,
- .reduce = NFT_REDUCE_READONLY,
};
static struct nft_expr_type nft_masq_inet_type __read_mostly = {
--- a/net/netfilter/nft_meta.c
+++ b/net/netfilter/nft_meta.c
@@ -743,60 +743,16 @@ static int nft_meta_get_offload(struct n
return 0;
}
-bool nft_meta_get_reduce(struct nft_regs_track *track,
- const struct nft_expr *expr)
-{
- const struct nft_meta *priv = nft_expr_priv(expr);
- const struct nft_meta *meta;
-
- if (!nft_reg_track_cmp(track, expr, priv->dreg)) {
- nft_reg_track_update(track, expr, priv->dreg, priv->len);
- return false;
- }
-
- meta = nft_expr_priv(track->regs[priv->dreg].selector);
- if (priv->key != meta->key ||
- priv->dreg != meta->dreg) {
- nft_reg_track_update(track, expr, priv->dreg, priv->len);
- return false;
- }
-
- if (!track->regs[priv->dreg].bitwise)
- return true;
-
- return nft_expr_reduce_bitwise(track, expr);
-}
-EXPORT_SYMBOL_GPL(nft_meta_get_reduce);
-
static const struct nft_expr_ops nft_meta_get_ops = {
.type = &nft_meta_type,
.size = NFT_EXPR_SIZE(sizeof(struct nft_meta)),
.eval = nft_meta_get_eval,
.init = nft_meta_get_init,
.dump = nft_meta_get_dump,
- .reduce = nft_meta_get_reduce,
.validate = nft_meta_get_validate,
.offload = nft_meta_get_offload,
};
-static bool nft_meta_set_reduce(struct nft_regs_track *track,
- const struct nft_expr *expr)
-{
- int i;
-
- for (i = 0; i < NFT_REG32_NUM; i++) {
- if (!track->regs[i].selector)
- continue;
-
- if (track->regs[i].selector->ops != &nft_meta_get_ops)
- continue;
-
- __nft_reg_track_cancel(track, i);
- }
-
- return false;
-}
-
static const struct nft_expr_ops nft_meta_set_ops = {
.type = &nft_meta_type,
.size = NFT_EXPR_SIZE(sizeof(struct nft_meta)),
@@ -804,7 +760,6 @@ static const struct nft_expr_ops nft_met
.init = nft_meta_set_init,
.destroy = nft_meta_set_destroy,
.dump = nft_meta_set_dump,
- .reduce = nft_meta_set_reduce,
.validate = nft_meta_set_validate,
};
--- a/net/netfilter/nft_nat.c
+++ b/net/netfilter/nft_nat.c
@@ -320,7 +320,6 @@ static const struct nft_expr_ops nft_nat
.destroy = nft_nat_destroy,
.dump = nft_nat_dump,
.validate = nft_nat_validate,
- .reduce = NFT_REDUCE_READONLY,
};
static struct nft_expr_type nft_nat_type __read_mostly = {
@@ -351,7 +350,6 @@ static const struct nft_expr_ops nft_nat
.destroy = nft_nat_destroy,
.dump = nft_nat_dump,
.validate = nft_nat_validate,
- .reduce = NFT_REDUCE_READONLY,
};
static struct nft_expr_type nft_inet_nat_type __read_mostly = {
--- a/net/netfilter/nft_numgen.c
+++ b/net/netfilter/nft_numgen.c
@@ -84,16 +84,6 @@ err:
return err;
}
-static bool nft_ng_inc_reduce(struct nft_regs_track *track,
- const struct nft_expr *expr)
-{
- const struct nft_ng_inc *priv = nft_expr_priv(expr);
-
- nft_reg_track_cancel(track, priv->dreg, NFT_REG32_SIZE);
-
- return false;
-}
-
static int nft_ng_dump(struct sk_buff *skb, enum nft_registers dreg,
u32 modulus, enum nft_ng_types type, u32 offset)
{
@@ -178,16 +168,6 @@ static int nft_ng_random_dump(struct sk_
priv->offset);
}
-static bool nft_ng_random_reduce(struct nft_regs_track *track,
- const struct nft_expr *expr)
-{
- const struct nft_ng_random *priv = nft_expr_priv(expr);
-
- nft_reg_track_cancel(track, priv->dreg, NFT_REG32_SIZE);
-
- return false;
-}
-
static struct nft_expr_type nft_ng_type;
static const struct nft_expr_ops nft_ng_inc_ops = {
.type = &nft_ng_type,
@@ -196,7 +176,6 @@ static const struct nft_expr_ops nft_ng_
.init = nft_ng_inc_init,
.destroy = nft_ng_inc_destroy,
.dump = nft_ng_inc_dump,
- .reduce = nft_ng_inc_reduce,
};
static const struct nft_expr_ops nft_ng_random_ops = {
@@ -205,7 +184,6 @@ static const struct nft_expr_ops nft_ng_
.eval = nft_ng_random_eval,
.init = nft_ng_random_init,
.dump = nft_ng_random_dump,
- .reduce = nft_ng_random_reduce,
};
static const struct nft_expr_ops *
--- a/net/netfilter/nft_objref.c
+++ b/net/netfilter/nft_objref.c
@@ -123,7 +123,6 @@ static const struct nft_expr_ops nft_obj
.deactivate = nft_objref_deactivate,
.dump = nft_objref_dump,
.validate = nft_objref_validate,
- .reduce = NFT_REDUCE_READONLY,
};
struct nft_objref_map {
@@ -245,7 +244,6 @@ static const struct nft_expr_ops nft_obj
.destroy = nft_objref_map_destroy,
.dump = nft_objref_map_dump,
.validate = nft_objref_map_validate,
- .reduce = NFT_REDUCE_READONLY,
};
static const struct nft_expr_ops *
--- a/net/netfilter/nft_osf.c
+++ b/net/netfilter/nft_osf.c
@@ -131,30 +131,6 @@ static int nft_osf_validate(const struct
return nft_chain_validate_hooks(ctx->chain, hooks);
}
-static bool nft_osf_reduce(struct nft_regs_track *track,
- const struct nft_expr *expr)
-{
- struct nft_osf *priv = nft_expr_priv(expr);
- struct nft_osf *osf;
-
- if (!nft_reg_track_cmp(track, expr, priv->dreg)) {
- nft_reg_track_update(track, expr, priv->dreg, NFT_OSF_MAXGENRELEN);
- return false;
- }
-
- osf = nft_expr_priv(track->regs[priv->dreg].selector);
- if (priv->flags != osf->flags ||
- priv->ttl != osf->ttl) {
- nft_reg_track_update(track, expr, priv->dreg, NFT_OSF_MAXGENRELEN);
- return false;
- }
-
- if (!track->regs[priv->dreg].bitwise)
- return true;
-
- return false;
-}
-
static struct nft_expr_type nft_osf_type;
static const struct nft_expr_ops nft_osf_op = {
.eval = nft_osf_eval,
@@ -163,7 +139,6 @@ static const struct nft_expr_ops nft_osf
.dump = nft_osf_dump,
.type = &nft_osf_type,
.validate = nft_osf_validate,
- .reduce = nft_osf_reduce,
};
static struct nft_expr_type nft_osf_type __read_mostly = {
--- a/net/netfilter/nft_payload.c
+++ b/net/netfilter/nft_payload.c
@@ -256,31 +256,6 @@ nla_put_failure:
return -1;
}
-static bool nft_payload_reduce(struct nft_regs_track *track,
- const struct nft_expr *expr)
-{
- const struct nft_payload *priv = nft_expr_priv(expr);
- const struct nft_payload *payload;
-
- if (!nft_reg_track_cmp(track, expr, priv->dreg)) {
- nft_reg_track_update(track, expr, priv->dreg, priv->len);
- return false;
- }
-
- payload = nft_expr_priv(track->regs[priv->dreg].selector);
- if (priv->base != payload->base ||
- priv->offset != payload->offset ||
- priv->len != payload->len) {
- nft_reg_track_update(track, expr, priv->dreg, priv->len);
- return false;
- }
-
- if (!track->regs[priv->dreg].bitwise)
- return true;
-
- return nft_expr_reduce_bitwise(track, expr);
-}
-
static bool nft_payload_offload_mask(struct nft_offload_reg *reg,
u32 priv_len, u32 field_len)
{
@@ -584,7 +559,6 @@ static const struct nft_expr_ops nft_pay
.eval = nft_payload_eval,
.init = nft_payload_init,
.dump = nft_payload_dump,
- .reduce = nft_payload_reduce,
.offload = nft_payload_offload,
};
@@ -594,7 +568,6 @@ const struct nft_expr_ops nft_payload_fa
.eval = nft_payload_eval,
.init = nft_payload_init,
.dump = nft_payload_dump,
- .reduce = nft_payload_reduce,
.offload = nft_payload_offload,
};
@@ -1022,32 +995,12 @@ nla_put_failure:
return -1;
}
-static bool nft_payload_set_reduce(struct nft_regs_track *track,
- const struct nft_expr *expr)
-{
- int i;
-
- for (i = 0; i < NFT_REG32_NUM; i++) {
- if (!track->regs[i].selector)
- continue;
-
- if (track->regs[i].selector->ops != &nft_payload_ops &&
- track->regs[i].selector->ops != &nft_payload_fast_ops)
- continue;
-
- __nft_reg_track_cancel(track, i);
- }
-
- return false;
-}
-
static const struct nft_expr_ops nft_payload_set_ops = {
.type = &nft_payload_type,
.size = NFT_EXPR_SIZE(sizeof(struct nft_payload_set)),
.eval = nft_payload_set_eval,
.init = nft_payload_set_init,
.dump = nft_payload_set_dump,
- .reduce = nft_payload_set_reduce,
};
static const struct nft_expr_ops *
--- a/net/netfilter/nft_queue.c
+++ b/net/netfilter/nft_queue.c
@@ -191,7 +191,6 @@ static const struct nft_expr_ops nft_que
.init = nft_queue_init,
.dump = nft_queue_dump,
.validate = nft_queue_validate,
- .reduce = NFT_REDUCE_READONLY,
};
static const struct nft_expr_ops nft_queue_sreg_ops = {
@@ -201,7 +200,6 @@ static const struct nft_expr_ops nft_que
.init = nft_queue_sreg_init,
.dump = nft_queue_sreg_dump,
.validate = nft_queue_validate,
- .reduce = NFT_REDUCE_READONLY,
};
static const struct nft_expr_ops *
--- a/net/netfilter/nft_quota.c
+++ b/net/netfilter/nft_quota.c
@@ -266,7 +266,6 @@ static const struct nft_expr_ops nft_quo
.destroy = nft_quota_destroy,
.clone = nft_quota_clone,
.dump = nft_quota_dump,
- .reduce = NFT_REDUCE_READONLY,
};
static struct nft_expr_type nft_quota_type __read_mostly = {
--- a/net/netfilter/nft_range.c
+++ b/net/netfilter/nft_range.c
@@ -138,7 +138,6 @@ static const struct nft_expr_ops nft_ran
.eval = nft_range_eval,
.init = nft_range_init,
.dump = nft_range_dump,
- .reduce = NFT_REDUCE_READONLY,
};
struct nft_expr_type nft_range_type __read_mostly = {
--- a/net/netfilter/nft_redir.c
+++ b/net/netfilter/nft_redir.c
@@ -146,7 +146,6 @@ static const struct nft_expr_ops nft_red
.destroy = nft_redir_ipv4_destroy,
.dump = nft_redir_dump,
.validate = nft_redir_validate,
- .reduce = NFT_REDUCE_READONLY,
};
static struct nft_expr_type nft_redir_ipv4_type __read_mostly = {
@@ -174,7 +173,6 @@ static const struct nft_expr_ops nft_red
.destroy = nft_redir_ipv6_destroy,
.dump = nft_redir_dump,
.validate = nft_redir_validate,
- .reduce = NFT_REDUCE_READONLY,
};
static struct nft_expr_type nft_redir_ipv6_type __read_mostly = {
@@ -203,7 +201,6 @@ static const struct nft_expr_ops nft_red
.destroy = nft_redir_inet_destroy,
.dump = nft_redir_dump,
.validate = nft_redir_validate,
- .reduce = NFT_REDUCE_READONLY,
};
static struct nft_expr_type nft_redir_inet_type __read_mostly = {
--- a/net/netfilter/nft_reject_inet.c
+++ b/net/netfilter/nft_reject_inet.c
@@ -79,7 +79,6 @@ static const struct nft_expr_ops nft_rej
.init = nft_reject_init,
.dump = nft_reject_dump,
.validate = nft_reject_inet_validate,
- .reduce = NFT_REDUCE_READONLY,
};
static struct nft_expr_type nft_reject_inet_type __read_mostly = {
--- a/net/netfilter/nft_reject_netdev.c
+++ b/net/netfilter/nft_reject_netdev.c
@@ -158,7 +158,6 @@ static const struct nft_expr_ops nft_rej
.init = nft_reject_init,
.dump = nft_reject_dump,
.validate = nft_reject_netdev_validate,
- .reduce = NFT_REDUCE_READONLY,
};
static struct nft_expr_type nft_reject_netdev_type __read_mostly = {
--- a/net/netfilter/nft_rt.c
+++ b/net/netfilter/nft_rt.c
@@ -195,7 +195,6 @@ static const struct nft_expr_ops nft_rt_
.init = nft_rt_get_init,
.dump = nft_rt_get_dump,
.validate = nft_rt_validate,
- .reduce = NFT_REDUCE_READONLY,
};
struct nft_expr_type nft_rt_type __read_mostly = {
--- a/net/netfilter/nft_socket.c
+++ b/net/netfilter/nft_socket.c
@@ -249,31 +249,6 @@ static int nft_socket_dump(struct sk_buf
return 0;
}
-static bool nft_socket_reduce(struct nft_regs_track *track,
- const struct nft_expr *expr)
-{
- const struct nft_socket *priv = nft_expr_priv(expr);
- const struct nft_socket *socket;
-
- if (!nft_reg_track_cmp(track, expr, priv->dreg)) {
- nft_reg_track_update(track, expr, priv->dreg, priv->len);
- return false;
- }
-
- socket = nft_expr_priv(track->regs[priv->dreg].selector);
- if (priv->key != socket->key ||
- priv->dreg != socket->dreg ||
- priv->level != socket->level) {
- nft_reg_track_update(track, expr, priv->dreg, priv->len);
- return false;
- }
-
- if (!track->regs[priv->dreg].bitwise)
- return true;
-
- return nft_expr_reduce_bitwise(track, expr);
-}
-
static int nft_socket_validate(const struct nft_ctx *ctx,
const struct nft_expr *expr)
{
@@ -296,7 +271,6 @@ static const struct nft_expr_ops nft_soc
.init = nft_socket_init,
.dump = nft_socket_dump,
.validate = nft_socket_validate,
- .reduce = nft_socket_reduce,
};
static struct nft_expr_type nft_socket_type __read_mostly = {
--- a/net/netfilter/nft_synproxy.c
+++ b/net/netfilter/nft_synproxy.c
@@ -290,7 +290,6 @@ static const struct nft_expr_ops nft_syn
.dump = nft_synproxy_dump,
.type = &nft_synproxy_type,
.validate = nft_synproxy_validate,
- .reduce = NFT_REDUCE_READONLY,
};
static struct nft_expr_type nft_synproxy_type __read_mostly = {
--- a/net/netfilter/nft_tproxy.c
+++ b/net/netfilter/nft_tproxy.c
@@ -331,7 +331,6 @@ static const struct nft_expr_ops nft_tpr
.init = nft_tproxy_init,
.destroy = nft_tproxy_destroy,
.dump = nft_tproxy_dump,
- .reduce = NFT_REDUCE_READONLY,
.validate = nft_tproxy_validate,
};
--- a/net/netfilter/nft_tunnel.c
+++ b/net/netfilter/nft_tunnel.c
@@ -124,31 +124,6 @@ nla_put_failure:
return -1;
}
-static bool nft_tunnel_get_reduce(struct nft_regs_track *track,
- const struct nft_expr *expr)
-{
- const struct nft_tunnel *priv = nft_expr_priv(expr);
- const struct nft_tunnel *tunnel;
-
- if (!nft_reg_track_cmp(track, expr, priv->dreg)) {
- nft_reg_track_update(track, expr, priv->dreg, priv->len);
- return false;
- }
-
- tunnel = nft_expr_priv(track->regs[priv->dreg].selector);
- if (priv->key != tunnel->key ||
- priv->dreg != tunnel->dreg ||
- priv->mode != tunnel->mode) {
- nft_reg_track_update(track, expr, priv->dreg, priv->len);
- return false;
- }
-
- if (!track->regs[priv->dreg].bitwise)
- return true;
-
- return false;
-}
-
static struct nft_expr_type nft_tunnel_type;
static const struct nft_expr_ops nft_tunnel_get_ops = {
.type = &nft_tunnel_type,
@@ -156,7 +131,6 @@ static const struct nft_expr_ops nft_tun
.eval = nft_tunnel_get_eval,
.init = nft_tunnel_get_init,
.dump = nft_tunnel_get_dump,
- .reduce = nft_tunnel_get_reduce,
};
static struct nft_expr_type nft_tunnel_type __read_mostly = {
--- a/net/netfilter/nft_xfrm.c
+++ b/net/netfilter/nft_xfrm.c
@@ -259,32 +259,6 @@ static int nft_xfrm_validate(const struc
return nft_chain_validate_hooks(ctx->chain, hooks);
}
-static bool nft_xfrm_reduce(struct nft_regs_track *track,
- const struct nft_expr *expr)
-{
- const struct nft_xfrm *priv = nft_expr_priv(expr);
- const struct nft_xfrm *xfrm;
-
- if (!nft_reg_track_cmp(track, expr, priv->dreg)) {
- nft_reg_track_update(track, expr, priv->dreg, priv->len);
- return false;
- }
-
- xfrm = nft_expr_priv(track->regs[priv->dreg].selector);
- if (priv->key != xfrm->key ||
- priv->dreg != xfrm->dreg ||
- priv->dir != xfrm->dir ||
- priv->spnum != xfrm->spnum) {
- nft_reg_track_update(track, expr, priv->dreg, priv->len);
- return false;
- }
-
- if (!track->regs[priv->dreg].bitwise)
- return true;
-
- return nft_expr_reduce_bitwise(track, expr);
-}
-
static struct nft_expr_type nft_xfrm_type;
static const struct nft_expr_ops nft_xfrm_get_ops = {
.type = &nft_xfrm_type,
@@ -293,7 +267,6 @@ static const struct nft_expr_ops nft_xfr
.init = nft_xfrm_get_init,
.dump = nft_xfrm_get_dump,
.validate = nft_xfrm_validate,
- .reduce = nft_xfrm_reduce,
};
static struct nft_expr_type nft_xfrm_type __read_mostly = {
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 619/675] netfilter: nft_fib: reject fib expression on the netdev egress hook
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (617 preceding siblings ...)
2026-07-30 14:15 ` [PATCH 6.18 618/675] netfilter: nf_tables: remove register tracking infrastructure Greg Kroah-Hartman
@ 2026-07-30 14:15 ` Greg Kroah-Hartman
2026-07-30 14:15 ` [PATCH 6.18 620/675] netfilter: nf_conntrack_sip: remove net variable shadowing Greg Kroah-Hartman
` (60 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:15 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Theodor Arsenij Larionov-Trichkine,
Florian Westphal, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Theodor Arsenij Larionov-Trichkine <theodorlarionov@gmail.com>
[ Upstream commit d07955dd34ecae17d35d8c7d0a273a3fba653a8c ]
A fib expression in a netdev egress base chain dereferences nft_in(pkt),
NULL on the transmit path, causing a NULL pointer dereference at eval.
nft_fib_validate() masks the hook with NF_INET_* values, but netdev hook
numbers are a separate enum that aliases them (NF_NETDEV_EGRESS ==
NF_INET_LOCAL_IN), so an egress chain passes validation and then faults.
Add nft_fib_netdev_validate() that limits each result/flag to the netdev
hook where the device it reads exists: the input-device cases (OIF,
OIFNAME, ADDRTYPE with F_IIF) to ingress, the output-device case (ADDRTYPE
with F_OIF) to egress, ADDRTYPE with no device flag to both. Also restrict
nft_fib_validate() to NFPROTO_IPV4/IPV6/INET so its NF_INET_* masks are
not applied to another family's hooks.
Fixes: 42df6e1d221d ("netfilter: Introduce egress hook")
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/netfilter-devel/ajxsjcDOnwllMfoR@strlen.de/
Signed-off-by: Theodor Arsenij Larionov-Trichkine <theodorlarionov@gmail.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/netfilter/nft_fib.c | 9 +++++++++
net/netfilter/nft_fib_netdev.c | 29 ++++++++++++++++++++++++++++-
2 files changed, 37 insertions(+), 1 deletion(-)
--- a/net/netfilter/nft_fib.c
+++ b/net/netfilter/nft_fib.c
@@ -31,6 +31,15 @@ int nft_fib_validate(const struct nft_ct
const struct nft_fib *priv = nft_expr_priv(expr);
unsigned int hooks;
+ switch (ctx->family) {
+ case NFPROTO_IPV4:
+ case NFPROTO_IPV6:
+ case NFPROTO_INET:
+ break;
+ default:
+ return -EOPNOTSUPP;
+ }
+
switch (priv->result) {
case NFT_FIB_RESULT_OIF:
case NFT_FIB_RESULT_OIFNAME:
--- a/net/netfilter/nft_fib_netdev.c
+++ b/net/netfilter/nft_fib_netdev.c
@@ -50,6 +50,33 @@ static void nft_fib_netdev_eval(const st
regs->verdict.code = NFT_BREAK;
}
+static int nft_fib_netdev_validate(const struct nft_ctx *ctx,
+ const struct nft_expr *expr)
+{
+ const struct nft_fib *priv = nft_expr_priv(expr);
+ unsigned int hooks;
+
+ switch (priv->result) {
+ case NFT_FIB_RESULT_OIF:
+ case NFT_FIB_RESULT_OIFNAME:
+ hooks = (1 << NF_NETDEV_INGRESS);
+ break;
+ case NFT_FIB_RESULT_ADDRTYPE:
+ if (priv->flags & NFTA_FIB_F_IIF)
+ hooks = (1 << NF_NETDEV_INGRESS);
+ else if (priv->flags & NFTA_FIB_F_OIF)
+ hooks = (1 << NF_NETDEV_EGRESS);
+ else
+ hooks = (1 << NF_NETDEV_INGRESS) |
+ (1 << NF_NETDEV_EGRESS);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return nft_chain_validate_hooks(ctx->chain, hooks);
+}
+
static struct nft_expr_type nft_fib_netdev_type;
static const struct nft_expr_ops nft_fib_netdev_ops = {
.type = &nft_fib_netdev_type,
@@ -57,7 +84,7 @@ static const struct nft_expr_ops nft_fib
.eval = nft_fib_netdev_eval,
.init = nft_fib_init,
.dump = nft_fib_dump,
- .validate = nft_fib_validate,
+ .validate = nft_fib_netdev_validate,
};
static struct nft_expr_type nft_fib_netdev_type __read_mostly = {
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 620/675] netfilter: nf_conntrack_sip: remove net variable shadowing
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (618 preceding siblings ...)
2026-07-30 14:15 ` [PATCH 6.18 619/675] netfilter: nft_fib: reject fib expression on the netdev egress hook Greg Kroah-Hartman
@ 2026-07-30 14:15 ` Greg Kroah-Hartman
2026-07-30 14:15 ` [PATCH 6.18 621/675] netfilter: nf_conntrack_sip: validate skb_dst() before accessing it Greg Kroah-Hartman
` (59 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:15 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Florian Westphal, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Florian Westphal <fw@strlen.de>
[ Upstream commit 7970d6aaf710db166de98c5356a260089896fae5 ]
net is already set, derived from nf_conn.
I don't see how the device could be living in a different netns
than the conntrack entry.
Remove the extra variable and re-use existing one.
Signed-off-by: Florian Westphal <fw@strlen.de>
Stable-dep-of: e5e24a365a5e ("netfilter: nf_conntrack_sip: validate skb_dst() before accessing it")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/netfilter/nf_conntrack_sip.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
--- a/net/netfilter/nf_conntrack_sip.c
+++ b/net/netfilter/nf_conntrack_sip.c
@@ -948,9 +948,8 @@ static int set_expected_rtp_rtcp(struct
saddr = &ct->tuplehash[!dir].tuple.src.u3;
} else if (sip_external_media) {
struct net_device *dev = skb_dst(skb)->dev;
- struct net *net = dev_net(dev);
- struct flowi fl;
struct dst_entry *dst = NULL;
+ struct flowi fl;
memset(&fl, 0, sizeof(fl));
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 621/675] netfilter: nf_conntrack_sip: validate skb_dst() before accessing it
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (619 preceding siblings ...)
2026-07-30 14:15 ` [PATCH 6.18 620/675] netfilter: nf_conntrack_sip: remove net variable shadowing Greg Kroah-Hartman
@ 2026-07-30 14:15 ` Greg Kroah-Hartman
2026-07-30 14:15 ` [PATCH 6.18 622/675] gpu: Move DRM buddy allocator one level up (part two) Greg Kroah-Hartman
` (58 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:15 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Ren Wei, Pablo Neira Ayuso,
Florian Westphal, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Pablo Neira Ayuso <pablo@netfilter.org>
[ Upstream commit e5e24a365a5e024efef63cc49abb345fbd4852c5 ]
tc ingress and openvswitch do not guarantee routing information to be
available. These subsystems use the conntrack helper infrastructure, and
the SIP helper relies on the skb_dst() to be present if
sip_external_media is set to 1 (which is disabled by default as a module
parameter).
This effectively disables the sip_external_media toggle for these
subsystems without resulting in a crash.
Fixes: cae3a2627520 ("openvswitch: Allow attaching helpers to ct action")
Fixes: b57dc7c13ea9 ("net/sched: Introduce action ct")
Cc: stable@vger.kernel.org
Reported-by: Ren Wei <n05ec@lzu.edu.cn>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/netfilter/nf_conntrack_sip.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
--- a/net/netfilter/nf_conntrack_sip.c
+++ b/net/netfilter/nf_conntrack_sip.c
@@ -947,7 +947,6 @@ static int set_expected_rtp_rtcp(struct
return NF_ACCEPT;
saddr = &ct->tuplehash[!dir].tuple.src.u3;
} else if (sip_external_media) {
- struct net_device *dev = skb_dst(skb)->dev;
struct dst_entry *dst = NULL;
struct flowi fl;
@@ -969,7 +968,11 @@ static int set_expected_rtp_rtcp(struct
* through the same interface as the signalling peer.
*/
if (dst) {
- bool external_media = (dst->dev == dev);
+ const struct dst_entry *this_dst = skb_dst(skb);
+ bool external_media = false;
+
+ if (this_dst && dst->dev == this_dst->dev)
+ external_media = true;
dst_release(dst);
if (external_media)
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 622/675] gpu: Move DRM buddy allocator one level up (part two)
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (620 preceding siblings ...)
2026-07-30 14:15 ` [PATCH 6.18 621/675] netfilter: nf_conntrack_sip: validate skb_dst() before accessing it Greg Kroah-Hartman
@ 2026-07-30 14:15 ` Greg Kroah-Hartman
2026-07-30 14:15 ` [PATCH 6.18 623/675] gpu/buddy: bail out of try_harder when alignment cannot be honoured Greg Kroah-Hartman
` (57 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:15 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Joel Fernandes, Dave Airlie,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Joel Fernandes <joelagnelf@nvidia.com>
[ Upstream commit ba110db8e1bc206c13fd7d985e79b033f53bfdea ]
Move the DRM buddy allocator one level up so that it can be used by GPU
drivers (example, nova-core) that have usecases other than DRM (such as
VFIO vGPU support). Modify the API, structures and Kconfigs to use
"gpu_buddy" terminology. Adapt the drivers and tests to use the new API.
The commit cannot be split due to bisectability, however no functional
change is intended. Verified by running K-UNIT tests and build tested
various configurations.
Signed-off-by: Joel Fernandes <joelagnelf@nvidia.com>
Reviewed-by: Dave Airlie <airlied@redhat.com>
[airlied: I've split this into two so git can find copies easier.
I've also just nuked drm_random library, that stuff needs to be done
elsewhere and only the buddy tests seem to be using it].
Signed-off-by: Dave Airlie <airlied@redhat.com>
Stable-dep-of: 56bc6384314f ("gpu/buddy: bail out of try_harder when alignment cannot be honoured")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
Documentation/gpu/drm-mm.rst | 10
MAINTAINERS | 13
drivers/gpu/Kconfig | 13
drivers/gpu/Makefile | 3
drivers/gpu/buddy.c | 1322 +++++++++++++++++++
drivers/gpu/drm/Kconfig | 5
drivers/gpu/drm/Kconfig.debug | 1
drivers/gpu/drm/Makefile | 1
drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c | 2
drivers/gpu/drm/amd/amdgpu/amdgpu_res_cursor.h | 12
drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c | 79 -
drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.h | 20
drivers/gpu/drm/drm_buddy.c | 1278 ------------------
drivers/gpu/drm/i915/gem/i915_gem_ttm.c | 3
drivers/gpu/drm/i915/i915_scatterlist.c | 10
drivers/gpu/drm/i915/i915_ttm_buddy_manager.c | 59
drivers/gpu/drm/i915/i915_ttm_buddy_manager.h | 4
drivers/gpu/drm/i915/selftests/intel_memory_region.c | 20
drivers/gpu/drm/lib/drm_random.c | 44
drivers/gpu/drm/lib/drm_random.h | 28
drivers/gpu/drm/tests/Makefile | 1
drivers/gpu/drm/tests/drm_buddy_test.c | 788 -----------
drivers/gpu/drm/tests/drm_exec_test.c | 2
drivers/gpu/drm/tests/drm_mm_test.c | 2
drivers/gpu/drm/ttm/tests/ttm_bo_validate_test.c | 4
drivers/gpu/drm/ttm/tests/ttm_mock_manager.c | 18
drivers/gpu/drm/ttm/tests/ttm_mock_manager.h | 4
drivers/gpu/drm/xe/xe_res_cursor.h | 34
drivers/gpu/drm/xe/xe_svm.c | 12
drivers/gpu/drm/xe/xe_ttm_vram_mgr.c | 71 -
drivers/gpu/drm/xe/xe_ttm_vram_mgr_types.h | 4
drivers/gpu/tests/Makefile | 4
drivers/gpu/tests/gpu_buddy_test.c | 788 +++++++++++
drivers/gpu/tests/gpu_random.c | 44
drivers/gpu/tests/gpu_random.h | 28
drivers/video/Kconfig | 1
include/drm/drm_buddy.h | 165 --
include/linux/gpu_buddy.h | 177 ++
38 files changed, 2597 insertions(+), 2477 deletions(-)
create mode 100644 drivers/gpu/Kconfig
create mode 100644 drivers/gpu/buddy.c
create mode 100644 drivers/gpu/tests/Makefile
rename drivers/gpu/{drm/tests/drm_buddy_test.c => tests/gpu_buddy_test.c} (66%)
rename drivers/gpu/{drm/lib/drm_random.c => tests/gpu_random.c} (59%)
rename drivers/gpu/{drm/lib/drm_random.h => tests/gpu_random.h} (53%)
create mode 100644 include/linux/gpu_buddy.h
--- a/Documentation/gpu/drm-mm.rst
+++ b/Documentation/gpu/drm-mm.rst
@@ -509,8 +509,14 @@ DRM GPUVM Function References
DRM Buddy Allocator
===================
-DRM Buddy Function References
------------------------------
+Buddy Allocator Function References (GPU buddy)
+-----------------------------------------------
+
+.. kernel-doc:: drivers/gpu/buddy.c
+ :export:
+
+DRM Buddy Specific Logging Function References
+----------------------------------------------
.. kernel-doc:: drivers/gpu/drm/drm_buddy.c
:export:
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -8656,6 +8656,19 @@ T: git https://gitlab.freedesktop.org/dr
F: drivers/gpu/drm/ttm/
F: include/drm/ttm/
+GPU BUDDY ALLOCATOR
+M: Matthew Auld <matthew.auld@intel.com>
+M: Arun Pravin <arunpravin.paneerselvam@amd.com>
+R: Christian Koenig <christian.koenig@amd.com>
+L: dri-devel@lists.freedesktop.org
+S: Maintained
+T: git https://gitlab.freedesktop.org/drm/misc/kernel.git
+F: drivers/gpu/drm_buddy.c
+F: drivers/gpu/buddy.c
+F: drivers/gpu/tests/gpu_buddy_test.c
+F: include/linux/gpu_buddy.h
+F: include/drm/drm_buddy.h
+
DRM AUTOMATED TESTING
M: Helen Koike <helen.fornazier@gmail.com>
M: Vignesh Raman <vignesh.raman@collabora.com>
--- /dev/null
+++ b/drivers/gpu/Kconfig
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-2.0
+
+config GPU_BUDDY
+ bool
+ help
+ A page based buddy allocator for GPU memory.
+
+config GPU_BUDDY_KUNIT_TEST
+ tristate "KUnit tests for GPU buddy allocator" if !KUNIT_ALL_TESTS
+ depends on GPU_BUDDY && KUNIT
+ default KUNIT_ALL_TESTS
+ help
+ KUnit tests for the GPU buddy allocator.
--- a/drivers/gpu/Makefile
+++ b/drivers/gpu/Makefile
@@ -2,7 +2,8 @@
# drm/tegra depends on host1x, so if both drivers are built-in care must be
# taken to initialize them in the correct order. Link order is the only way
# to ensure this currently.
-obj-y += host1x/ drm/ vga/
+obj-y += host1x/ drm/ vga/ tests/
obj-$(CONFIG_IMX_IPUV3_CORE) += ipu-v3/
obj-$(CONFIG_TRACE_GPU_MEM) += trace/
obj-$(CONFIG_NOVA_CORE) += nova-core/
+obj-$(CONFIG_GPU_BUDDY) += buddy.o
--- /dev/null
+++ b/drivers/gpu/buddy.c
@@ -0,0 +1,1322 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2021 Intel Corporation
+ */
+
+#include <kunit/test-bug.h>
+
+#include <linux/export.h>
+#include <linux/kmemleak.h>
+#include <linux/module.h>
+#include <linux/sizes.h>
+
+#include <linux/gpu_buddy.h>
+
+static struct kmem_cache *slab_blocks;
+
+static struct gpu_buddy_block *gpu_block_alloc(struct gpu_buddy *mm,
+ struct gpu_buddy_block *parent,
+ unsigned int order,
+ u64 offset)
+{
+ struct gpu_buddy_block *block;
+
+ BUG_ON(order > GPU_BUDDY_MAX_ORDER);
+
+ block = kmem_cache_zalloc(slab_blocks, GFP_KERNEL);
+ if (!block)
+ return NULL;
+
+ block->header = offset;
+ block->header |= order;
+ block->parent = parent;
+
+ RB_CLEAR_NODE(&block->rb);
+
+ BUG_ON(block->header & GPU_BUDDY_HEADER_UNUSED);
+ return block;
+}
+
+static void gpu_block_free(struct gpu_buddy *mm,
+ struct gpu_buddy_block *block)
+{
+ kmem_cache_free(slab_blocks, block);
+}
+
+static enum gpu_buddy_free_tree
+get_block_tree(struct gpu_buddy_block *block)
+{
+ return gpu_buddy_block_is_clear(block) ?
+ GPU_BUDDY_CLEAR_TREE : GPU_BUDDY_DIRTY_TREE;
+}
+
+static struct gpu_buddy_block *
+rbtree_get_free_block(const struct rb_node *node)
+{
+ return node ? rb_entry(node, struct gpu_buddy_block, rb) : NULL;
+}
+
+static struct gpu_buddy_block *
+rbtree_last_free_block(struct rb_root *root)
+{
+ return rbtree_get_free_block(rb_last(root));
+}
+
+static bool rbtree_is_empty(struct rb_root *root)
+{
+ return RB_EMPTY_ROOT(root);
+}
+
+static bool gpu_buddy_block_offset_less(const struct gpu_buddy_block *block,
+ const struct gpu_buddy_block *node)
+{
+ return gpu_buddy_block_offset(block) < gpu_buddy_block_offset(node);
+}
+
+static bool rbtree_block_offset_less(struct rb_node *block,
+ const struct rb_node *node)
+{
+ return gpu_buddy_block_offset_less(rbtree_get_free_block(block),
+ rbtree_get_free_block(node));
+}
+
+static void rbtree_insert(struct gpu_buddy *mm,
+ struct gpu_buddy_block *block,
+ enum gpu_buddy_free_tree tree)
+{
+ rb_add(&block->rb,
+ &mm->free_trees[tree][gpu_buddy_block_order(block)],
+ rbtree_block_offset_less);
+}
+
+static void rbtree_remove(struct gpu_buddy *mm,
+ struct gpu_buddy_block *block)
+{
+ unsigned int order = gpu_buddy_block_order(block);
+ enum gpu_buddy_free_tree tree;
+ struct rb_root *root;
+
+ tree = get_block_tree(block);
+ root = &mm->free_trees[tree][order];
+
+ rb_erase(&block->rb, root);
+ RB_CLEAR_NODE(&block->rb);
+}
+
+static void clear_reset(struct gpu_buddy_block *block)
+{
+ block->header &= ~GPU_BUDDY_HEADER_CLEAR;
+}
+
+static void mark_cleared(struct gpu_buddy_block *block)
+{
+ block->header |= GPU_BUDDY_HEADER_CLEAR;
+}
+
+static void mark_allocated(struct gpu_buddy *mm,
+ struct gpu_buddy_block *block)
+{
+ block->header &= ~GPU_BUDDY_HEADER_STATE;
+ block->header |= GPU_BUDDY_ALLOCATED;
+
+ rbtree_remove(mm, block);
+}
+
+static void mark_free(struct gpu_buddy *mm,
+ struct gpu_buddy_block *block)
+{
+ enum gpu_buddy_free_tree tree;
+
+ block->header &= ~GPU_BUDDY_HEADER_STATE;
+ block->header |= GPU_BUDDY_FREE;
+
+ tree = get_block_tree(block);
+ rbtree_insert(mm, block, tree);
+}
+
+static void mark_split(struct gpu_buddy *mm,
+ struct gpu_buddy_block *block)
+{
+ block->header &= ~GPU_BUDDY_HEADER_STATE;
+ block->header |= GPU_BUDDY_SPLIT;
+
+ rbtree_remove(mm, block);
+}
+
+static inline bool overlaps(u64 s1, u64 e1, u64 s2, u64 e2)
+{
+ return s1 <= e2 && e1 >= s2;
+}
+
+static inline bool contains(u64 s1, u64 e1, u64 s2, u64 e2)
+{
+ return s1 <= s2 && e1 >= e2;
+}
+
+static struct gpu_buddy_block *
+__get_buddy(struct gpu_buddy_block *block)
+{
+ struct gpu_buddy_block *parent;
+
+ parent = block->parent;
+ if (!parent)
+ return NULL;
+
+ if (parent->left == block)
+ return parent->right;
+
+ return parent->left;
+}
+
+static unsigned int __gpu_buddy_free(struct gpu_buddy *mm,
+ struct gpu_buddy_block *block,
+ bool force_merge)
+{
+ struct gpu_buddy_block *parent;
+ unsigned int order;
+
+ while ((parent = block->parent)) {
+ struct gpu_buddy_block *buddy;
+
+ buddy = __get_buddy(block);
+
+ if (!gpu_buddy_block_is_free(buddy))
+ break;
+
+ if (!force_merge) {
+ /*
+ * Check the block and its buddy clear state and exit
+ * the loop if they both have the dissimilar state.
+ */
+ if (gpu_buddy_block_is_clear(block) !=
+ gpu_buddy_block_is_clear(buddy))
+ break;
+
+ if (gpu_buddy_block_is_clear(block))
+ mark_cleared(parent);
+ }
+
+ rbtree_remove(mm, buddy);
+ if (force_merge && gpu_buddy_block_is_clear(buddy))
+ mm->clear_avail -= gpu_buddy_block_size(mm, buddy);
+
+ gpu_block_free(mm, block);
+ gpu_block_free(mm, buddy);
+
+ block = parent;
+ }
+
+ order = gpu_buddy_block_order(block);
+ mark_free(mm, block);
+
+ return order;
+}
+
+static int __force_merge(struct gpu_buddy *mm,
+ u64 start,
+ u64 end,
+ unsigned int min_order)
+{
+ unsigned int tree, order;
+ int i;
+
+ if (!min_order)
+ return -ENOMEM;
+
+ if (min_order > mm->max_order)
+ return -EINVAL;
+
+ for_each_free_tree(tree) {
+ for (i = min_order - 1; i >= 0; i--) {
+ struct rb_node *iter = rb_last(&mm->free_trees[tree][i]);
+
+ while (iter) {
+ struct gpu_buddy_block *block, *buddy;
+ u64 block_start, block_end;
+
+ block = rbtree_get_free_block(iter);
+ iter = rb_prev(iter);
+
+ if (!block || !block->parent)
+ continue;
+
+ block_start = gpu_buddy_block_offset(block);
+ block_end = block_start + gpu_buddy_block_size(mm, block) - 1;
+
+ if (!contains(start, end, block_start, block_end))
+ continue;
+
+ buddy = __get_buddy(block);
+ if (!gpu_buddy_block_is_free(buddy))
+ continue;
+
+ WARN_ON(gpu_buddy_block_is_clear(block) ==
+ gpu_buddy_block_is_clear(buddy));
+
+ /*
+ * Advance to the next node when the current node is the buddy,
+ * as freeing the block will also remove its buddy from the tree.
+ */
+ if (iter == &buddy->rb)
+ iter = rb_prev(iter);
+
+ rbtree_remove(mm, block);
+ if (gpu_buddy_block_is_clear(block))
+ mm->clear_avail -= gpu_buddy_block_size(mm, block);
+
+ order = __gpu_buddy_free(mm, block, true);
+ if (order >= min_order)
+ return 0;
+ }
+ }
+ }
+
+ return -ENOMEM;
+}
+
+/**
+ * gpu_buddy_init - init memory manager
+ *
+ * @mm: GPU buddy manager to initialize
+ * @size: size in bytes to manage
+ * @chunk_size: minimum page size in bytes for our allocations
+ *
+ * Initializes the memory manager and its resources.
+ *
+ * Returns:
+ * 0 on success, error code on failure.
+ */
+int gpu_buddy_init(struct gpu_buddy *mm, u64 size, u64 chunk_size)
+{
+ unsigned int i, j, root_count = 0;
+ u64 offset = 0;
+
+ if (size < chunk_size)
+ return -EINVAL;
+
+ if (chunk_size < SZ_4K)
+ return -EINVAL;
+
+ if (!is_power_of_2(chunk_size))
+ return -EINVAL;
+
+ size = round_down(size, chunk_size);
+
+ mm->size = size;
+ mm->avail = size;
+ mm->clear_avail = 0;
+ mm->chunk_size = chunk_size;
+ mm->max_order = ilog2(size) - ilog2(chunk_size);
+
+ BUG_ON(mm->max_order > GPU_BUDDY_MAX_ORDER);
+
+ mm->free_trees = kmalloc_array(GPU_BUDDY_MAX_FREE_TREES,
+ sizeof(*mm->free_trees),
+ GFP_KERNEL);
+ if (!mm->free_trees)
+ return -ENOMEM;
+
+ for_each_free_tree(i) {
+ mm->free_trees[i] = kmalloc_array(mm->max_order + 1,
+ sizeof(struct rb_root),
+ GFP_KERNEL);
+ if (!mm->free_trees[i])
+ goto out_free_tree;
+
+ for (j = 0; j <= mm->max_order; ++j)
+ mm->free_trees[i][j] = RB_ROOT;
+ }
+
+ mm->n_roots = hweight64(size);
+
+ mm->roots = kmalloc_array(mm->n_roots,
+ sizeof(struct gpu_buddy_block *),
+ GFP_KERNEL);
+ if (!mm->roots)
+ goto out_free_tree;
+
+ /*
+ * Split into power-of-two blocks, in case we are given a size that is
+ * not itself a power-of-two.
+ */
+ do {
+ struct gpu_buddy_block *root;
+ unsigned int order;
+ u64 root_size;
+
+ order = ilog2(size) - ilog2(chunk_size);
+ root_size = chunk_size << order;
+
+ root = gpu_block_alloc(mm, NULL, order, offset);
+ if (!root)
+ goto out_free_roots;
+
+ mark_free(mm, root);
+
+ BUG_ON(root_count > mm->max_order);
+ BUG_ON(gpu_buddy_block_size(mm, root) < chunk_size);
+
+ mm->roots[root_count] = root;
+
+ offset += root_size;
+ size -= root_size;
+ root_count++;
+ } while (size);
+
+ return 0;
+
+out_free_roots:
+ while (root_count--)
+ gpu_block_free(mm, mm->roots[root_count]);
+ kfree(mm->roots);
+out_free_tree:
+ while (i--)
+ kfree(mm->free_trees[i]);
+ kfree(mm->free_trees);
+ return -ENOMEM;
+}
+EXPORT_SYMBOL(gpu_buddy_init);
+
+/**
+ * gpu_buddy_fini - tear down the memory manager
+ *
+ * @mm: GPU buddy manager to free
+ *
+ * Cleanup memory manager resources and the freetree
+ */
+void gpu_buddy_fini(struct gpu_buddy *mm)
+{
+ u64 root_size, size, start;
+ unsigned int order;
+ int i;
+
+ size = mm->size;
+
+ for (i = 0; i < mm->n_roots; ++i) {
+ order = ilog2(size) - ilog2(mm->chunk_size);
+ start = gpu_buddy_block_offset(mm->roots[i]);
+ __force_merge(mm, start, start + size, order);
+
+ if (WARN_ON(!gpu_buddy_block_is_free(mm->roots[i])))
+ kunit_fail_current_test("buddy_fini() root");
+
+ gpu_block_free(mm, mm->roots[i]);
+
+ root_size = mm->chunk_size << order;
+ size -= root_size;
+ }
+
+ WARN_ON(mm->avail != mm->size);
+
+ for_each_free_tree(i)
+ kfree(mm->free_trees[i]);
+ kfree(mm->free_trees);
+ kfree(mm->roots);
+}
+EXPORT_SYMBOL(gpu_buddy_fini);
+
+static int split_block(struct gpu_buddy *mm,
+ struct gpu_buddy_block *block)
+{
+ unsigned int block_order = gpu_buddy_block_order(block) - 1;
+ u64 offset = gpu_buddy_block_offset(block);
+
+ BUG_ON(!gpu_buddy_block_is_free(block));
+ BUG_ON(!gpu_buddy_block_order(block));
+
+ block->left = gpu_block_alloc(mm, block, block_order, offset);
+ if (!block->left)
+ return -ENOMEM;
+
+ block->right = gpu_block_alloc(mm, block, block_order,
+ offset + (mm->chunk_size << block_order));
+ if (!block->right) {
+ gpu_block_free(mm, block->left);
+ return -ENOMEM;
+ }
+
+ mark_split(mm, block);
+
+ if (gpu_buddy_block_is_clear(block)) {
+ mark_cleared(block->left);
+ mark_cleared(block->right);
+ clear_reset(block);
+ }
+
+ mark_free(mm, block->left);
+ mark_free(mm, block->right);
+
+ return 0;
+}
+
+/**
+ * gpu_get_buddy - get buddy address
+ *
+ * @block: GPU buddy block
+ *
+ * Returns the corresponding buddy block for @block, or NULL
+ * if this is a root block and can't be merged further.
+ * Requires some kind of locking to protect against
+ * any concurrent allocate and free operations.
+ */
+struct gpu_buddy_block *
+gpu_get_buddy(struct gpu_buddy_block *block)
+{
+ return __get_buddy(block);
+}
+EXPORT_SYMBOL(gpu_get_buddy);
+
+/**
+ * gpu_buddy_reset_clear - reset blocks clear state
+ *
+ * @mm: GPU buddy manager
+ * @is_clear: blocks clear state
+ *
+ * Reset the clear state based on @is_clear value for each block
+ * in the freetree.
+ */
+void gpu_buddy_reset_clear(struct gpu_buddy *mm, bool is_clear)
+{
+ enum gpu_buddy_free_tree src_tree, dst_tree;
+ u64 root_size, size, start;
+ unsigned int order;
+ int i;
+
+ size = mm->size;
+ for (i = 0; i < mm->n_roots; ++i) {
+ order = ilog2(size) - ilog2(mm->chunk_size);
+ start = gpu_buddy_block_offset(mm->roots[i]);
+ __force_merge(mm, start, start + size, order);
+
+ root_size = mm->chunk_size << order;
+ size -= root_size;
+ }
+
+ src_tree = is_clear ? GPU_BUDDY_DIRTY_TREE : GPU_BUDDY_CLEAR_TREE;
+ dst_tree = is_clear ? GPU_BUDDY_CLEAR_TREE : GPU_BUDDY_DIRTY_TREE;
+
+ for (i = 0; i <= mm->max_order; ++i) {
+ struct rb_root *root = &mm->free_trees[src_tree][i];
+ struct gpu_buddy_block *block, *tmp;
+
+ rbtree_postorder_for_each_entry_safe(block, tmp, root, rb) {
+ rbtree_remove(mm, block);
+ if (is_clear) {
+ mark_cleared(block);
+ mm->clear_avail += gpu_buddy_block_size(mm, block);
+ } else {
+ clear_reset(block);
+ mm->clear_avail -= gpu_buddy_block_size(mm, block);
+ }
+
+ rbtree_insert(mm, block, dst_tree);
+ }
+ }
+}
+EXPORT_SYMBOL(gpu_buddy_reset_clear);
+
+/**
+ * gpu_buddy_free_block - free a block
+ *
+ * @mm: GPU buddy manager
+ * @block: block to be freed
+ */
+void gpu_buddy_free_block(struct gpu_buddy *mm,
+ struct gpu_buddy_block *block)
+{
+ BUG_ON(!gpu_buddy_block_is_allocated(block));
+ mm->avail += gpu_buddy_block_size(mm, block);
+ if (gpu_buddy_block_is_clear(block))
+ mm->clear_avail += gpu_buddy_block_size(mm, block);
+
+ __gpu_buddy_free(mm, block, false);
+}
+EXPORT_SYMBOL(gpu_buddy_free_block);
+
+static void __gpu_buddy_free_list(struct gpu_buddy *mm,
+ struct list_head *objects,
+ bool mark_clear,
+ bool mark_dirty)
+{
+ struct gpu_buddy_block *block, *on;
+
+ WARN_ON(mark_dirty && mark_clear);
+
+ list_for_each_entry_safe(block, on, objects, link) {
+ if (mark_clear)
+ mark_cleared(block);
+ else if (mark_dirty)
+ clear_reset(block);
+ gpu_buddy_free_block(mm, block);
+ cond_resched();
+ }
+ INIT_LIST_HEAD(objects);
+}
+
+static void gpu_buddy_free_list_internal(struct gpu_buddy *mm,
+ struct list_head *objects)
+{
+ /*
+ * Don't touch the clear/dirty bit, since allocation is still internal
+ * at this point. For example we might have just failed part of the
+ * allocation.
+ */
+ __gpu_buddy_free_list(mm, objects, false, false);
+}
+
+/**
+ * gpu_buddy_free_list - free blocks
+ *
+ * @mm: GPU buddy manager
+ * @objects: input list head to free blocks
+ * @flags: optional flags like GPU_BUDDY_CLEARED
+ */
+void gpu_buddy_free_list(struct gpu_buddy *mm,
+ struct list_head *objects,
+ unsigned int flags)
+{
+ bool mark_clear = flags & GPU_BUDDY_CLEARED;
+
+ __gpu_buddy_free_list(mm, objects, mark_clear, !mark_clear);
+}
+EXPORT_SYMBOL(gpu_buddy_free_list);
+
+static bool block_incompatible(struct gpu_buddy_block *block, unsigned int flags)
+{
+ bool needs_clear = flags & GPU_BUDDY_CLEAR_ALLOCATION;
+
+ return needs_clear != gpu_buddy_block_is_clear(block);
+}
+
+static struct gpu_buddy_block *
+__alloc_range_bias(struct gpu_buddy *mm,
+ u64 start, u64 end,
+ unsigned int order,
+ unsigned long flags,
+ bool fallback)
+{
+ u64 req_size = mm->chunk_size << order;
+ struct gpu_buddy_block *block;
+ struct gpu_buddy_block *buddy;
+ LIST_HEAD(dfs);
+ int err;
+ int i;
+
+ end = end - 1;
+
+ for (i = 0; i < mm->n_roots; ++i)
+ list_add_tail(&mm->roots[i]->tmp_link, &dfs);
+
+ do {
+ u64 block_start;
+ u64 block_end;
+
+ block = list_first_entry_or_null(&dfs,
+ struct gpu_buddy_block,
+ tmp_link);
+ if (!block)
+ break;
+
+ list_del(&block->tmp_link);
+
+ if (gpu_buddy_block_order(block) < order)
+ continue;
+
+ block_start = gpu_buddy_block_offset(block);
+ block_end = block_start + gpu_buddy_block_size(mm, block) - 1;
+
+ if (!overlaps(start, end, block_start, block_end))
+ continue;
+
+ if (gpu_buddy_block_is_allocated(block))
+ continue;
+
+ if (block_start < start || block_end > end) {
+ u64 adjusted_start = max(block_start, start);
+ u64 adjusted_end = min(block_end, end);
+
+ if (round_down(adjusted_end + 1, req_size) <=
+ round_up(adjusted_start, req_size))
+ continue;
+ }
+
+ if (!fallback && block_incompatible(block, flags))
+ continue;
+
+ if (contains(start, end, block_start, block_end) &&
+ order == gpu_buddy_block_order(block)) {
+ /*
+ * Find the free block within the range.
+ */
+ if (gpu_buddy_block_is_free(block))
+ return block;
+
+ continue;
+ }
+
+ if (!gpu_buddy_block_is_split(block)) {
+ err = split_block(mm, block);
+ if (unlikely(err))
+ goto err_undo;
+ }
+
+ list_add(&block->right->tmp_link, &dfs);
+ list_add(&block->left->tmp_link, &dfs);
+ } while (1);
+
+ return ERR_PTR(-ENOSPC);
+
+err_undo:
+ /*
+ * We really don't want to leave around a bunch of split blocks, since
+ * bigger is better, so make sure we merge everything back before we
+ * free the allocated blocks.
+ */
+ buddy = __get_buddy(block);
+ if (buddy &&
+ (gpu_buddy_block_is_free(block) &&
+ gpu_buddy_block_is_free(buddy)))
+ __gpu_buddy_free(mm, block, false);
+ return ERR_PTR(err);
+}
+
+static struct gpu_buddy_block *
+__gpu_buddy_alloc_range_bias(struct gpu_buddy *mm,
+ u64 start, u64 end,
+ unsigned int order,
+ unsigned long flags)
+{
+ struct gpu_buddy_block *block;
+ bool fallback = false;
+
+ block = __alloc_range_bias(mm, start, end, order,
+ flags, fallback);
+ if (IS_ERR(block))
+ return __alloc_range_bias(mm, start, end, order,
+ flags, !fallback);
+
+ return block;
+}
+
+static struct gpu_buddy_block *
+get_maxblock(struct gpu_buddy *mm,
+ unsigned int order,
+ enum gpu_buddy_free_tree tree)
+{
+ struct gpu_buddy_block *max_block = NULL, *block = NULL;
+ struct rb_root *root;
+ unsigned int i;
+
+ for (i = order; i <= mm->max_order; ++i) {
+ root = &mm->free_trees[tree][i];
+ block = rbtree_last_free_block(root);
+ if (!block)
+ continue;
+
+ if (!max_block) {
+ max_block = block;
+ continue;
+ }
+
+ if (gpu_buddy_block_offset(block) >
+ gpu_buddy_block_offset(max_block)) {
+ max_block = block;
+ }
+ }
+
+ return max_block;
+}
+
+static struct gpu_buddy_block *
+alloc_from_freetree(struct gpu_buddy *mm,
+ unsigned int order,
+ unsigned long flags)
+{
+ struct gpu_buddy_block *block = NULL;
+ struct rb_root *root;
+ enum gpu_buddy_free_tree tree;
+ unsigned int tmp;
+ int err;
+
+ tree = (flags & GPU_BUDDY_CLEAR_ALLOCATION) ?
+ GPU_BUDDY_CLEAR_TREE : GPU_BUDDY_DIRTY_TREE;
+
+ if (flags & GPU_BUDDY_TOPDOWN_ALLOCATION) {
+ block = get_maxblock(mm, order, tree);
+ if (block)
+ /* Store the obtained block order */
+ tmp = gpu_buddy_block_order(block);
+ } else {
+ for (tmp = order; tmp <= mm->max_order; ++tmp) {
+ /* Get RB tree root for this order and tree */
+ root = &mm->free_trees[tree][tmp];
+ block = rbtree_last_free_block(root);
+ if (block)
+ break;
+ }
+ }
+
+ if (!block) {
+ /* Try allocating from the other tree */
+ tree = (tree == GPU_BUDDY_CLEAR_TREE) ?
+ GPU_BUDDY_DIRTY_TREE : GPU_BUDDY_CLEAR_TREE;
+
+ for (tmp = order; tmp <= mm->max_order; ++tmp) {
+ root = &mm->free_trees[tree][tmp];
+ block = rbtree_last_free_block(root);
+ if (block)
+ break;
+ }
+
+ if (!block)
+ return ERR_PTR(-ENOSPC);
+ }
+
+ BUG_ON(!gpu_buddy_block_is_free(block));
+
+ while (tmp != order) {
+ err = split_block(mm, block);
+ if (unlikely(err))
+ goto err_undo;
+
+ block = block->right;
+ tmp--;
+ }
+ return block;
+
+err_undo:
+ if (tmp != order)
+ __gpu_buddy_free(mm, block, false);
+ return ERR_PTR(err);
+}
+
+static int __alloc_range(struct gpu_buddy *mm,
+ struct list_head *dfs,
+ u64 start, u64 size,
+ struct list_head *blocks,
+ u64 *total_allocated_on_err)
+{
+ struct gpu_buddy_block *block;
+ struct gpu_buddy_block *buddy;
+ u64 total_allocated = 0;
+ LIST_HEAD(allocated);
+ u64 end;
+ int err;
+
+ end = start + size - 1;
+
+ do {
+ u64 block_start;
+ u64 block_end;
+
+ block = list_first_entry_or_null(dfs,
+ struct gpu_buddy_block,
+ tmp_link);
+ if (!block)
+ break;
+
+ list_del(&block->tmp_link);
+
+ block_start = gpu_buddy_block_offset(block);
+ block_end = block_start + gpu_buddy_block_size(mm, block) - 1;
+
+ if (!overlaps(start, end, block_start, block_end))
+ continue;
+
+ if (gpu_buddy_block_is_allocated(block)) {
+ err = -ENOSPC;
+ goto err_free;
+ }
+
+ if (contains(start, end, block_start, block_end)) {
+ if (gpu_buddy_block_is_free(block)) {
+ mark_allocated(mm, block);
+ total_allocated += gpu_buddy_block_size(mm, block);
+ mm->avail -= gpu_buddy_block_size(mm, block);
+ if (gpu_buddy_block_is_clear(block))
+ mm->clear_avail -= gpu_buddy_block_size(mm, block);
+ list_add_tail(&block->link, &allocated);
+ continue;
+ } else if (!mm->clear_avail) {
+ err = -ENOSPC;
+ goto err_free;
+ }
+ }
+
+ if (!gpu_buddy_block_is_split(block)) {
+ err = split_block(mm, block);
+ if (unlikely(err))
+ goto err_undo;
+ }
+
+ list_add(&block->right->tmp_link, dfs);
+ list_add(&block->left->tmp_link, dfs);
+ } while (1);
+
+ if (total_allocated < size) {
+ err = -ENOSPC;
+ goto err_free;
+ }
+
+ list_splice_tail(&allocated, blocks);
+
+ return 0;
+
+err_undo:
+ /*
+ * We really don't want to leave around a bunch of split blocks, since
+ * bigger is better, so make sure we merge everything back before we
+ * free the allocated blocks.
+ */
+ buddy = __get_buddy(block);
+ if (buddy &&
+ (gpu_buddy_block_is_free(block) &&
+ gpu_buddy_block_is_free(buddy)))
+ __gpu_buddy_free(mm, block, false);
+
+err_free:
+ if (err == -ENOSPC && total_allocated_on_err) {
+ list_splice_tail(&allocated, blocks);
+ *total_allocated_on_err = total_allocated;
+ } else {
+ gpu_buddy_free_list_internal(mm, &allocated);
+ }
+
+ return err;
+}
+
+static int __gpu_buddy_alloc_range(struct gpu_buddy *mm,
+ u64 start,
+ u64 size,
+ u64 *total_allocated_on_err,
+ struct list_head *blocks)
+{
+ LIST_HEAD(dfs);
+ int i;
+
+ for (i = 0; i < mm->n_roots; ++i)
+ list_add_tail(&mm->roots[i]->tmp_link, &dfs);
+
+ return __alloc_range(mm, &dfs, start, size,
+ blocks, total_allocated_on_err);
+}
+
+static int __alloc_contig_try_harder(struct gpu_buddy *mm,
+ u64 size,
+ u64 min_block_size,
+ struct list_head *blocks)
+{
+ u64 rhs_offset, lhs_offset, lhs_size, filled;
+ struct gpu_buddy_block *block;
+ unsigned int tree, order;
+ LIST_HEAD(blocks_lhs);
+ unsigned long pages;
+ u64 modify_size;
+ int err;
+
+ modify_size = rounddown_pow_of_two(size);
+ pages = modify_size >> ilog2(mm->chunk_size);
+ order = fls(pages) - 1;
+ if (order == 0)
+ return -ENOSPC;
+
+ for_each_free_tree(tree) {
+ struct rb_root *root;
+ struct rb_node *iter;
+
+ root = &mm->free_trees[tree][order];
+ if (rbtree_is_empty(root))
+ continue;
+
+ iter = rb_last(root);
+ while (iter) {
+ block = rbtree_get_free_block(iter);
+
+ /* Allocate blocks traversing RHS */
+ rhs_offset = gpu_buddy_block_offset(block);
+ err = __gpu_buddy_alloc_range(mm, rhs_offset, size,
+ &filled, blocks);
+ if (!err || err != -ENOSPC)
+ return err;
+
+ lhs_size = max((size - filled), min_block_size);
+ if (!IS_ALIGNED(lhs_size, min_block_size))
+ lhs_size = round_up(lhs_size, min_block_size);
+
+ /* Allocate blocks traversing LHS */
+ lhs_offset = gpu_buddy_block_offset(block) - lhs_size;
+ err = __gpu_buddy_alloc_range(mm, lhs_offset, lhs_size,
+ NULL, &blocks_lhs);
+ if (!err) {
+ list_splice(&blocks_lhs, blocks);
+ return 0;
+ } else if (err != -ENOSPC) {
+ gpu_buddy_free_list_internal(mm, blocks);
+ return err;
+ }
+ /* Free blocks for the next iteration */
+ gpu_buddy_free_list_internal(mm, blocks);
+
+ iter = rb_prev(iter);
+ }
+ }
+
+ return -ENOSPC;
+}
+
+/**
+ * gpu_buddy_block_trim - free unused pages
+ *
+ * @mm: GPU buddy manager
+ * @start: start address to begin the trimming.
+ * @new_size: original size requested
+ * @blocks: Input and output list of allocated blocks.
+ * MUST contain single block as input to be trimmed.
+ * On success will contain the newly allocated blocks
+ * making up the @new_size. Blocks always appear in
+ * ascending order
+ *
+ * For contiguous allocation, we round up the size to the nearest
+ * power of two value, drivers consume *actual* size, so remaining
+ * portions are unused and can be optionally freed with this function
+ *
+ * Returns:
+ * 0 on success, error code on failure.
+ */
+int gpu_buddy_block_trim(struct gpu_buddy *mm,
+ u64 *start,
+ u64 new_size,
+ struct list_head *blocks)
+{
+ struct gpu_buddy_block *parent;
+ struct gpu_buddy_block *block;
+ u64 block_start, block_end;
+ LIST_HEAD(dfs);
+ u64 new_start;
+ int err;
+
+ if (!list_is_singular(blocks))
+ return -EINVAL;
+
+ block = list_first_entry(blocks,
+ struct gpu_buddy_block,
+ link);
+
+ block_start = gpu_buddy_block_offset(block);
+ block_end = block_start + gpu_buddy_block_size(mm, block);
+
+ if (WARN_ON(!gpu_buddy_block_is_allocated(block)))
+ return -EINVAL;
+
+ if (new_size > gpu_buddy_block_size(mm, block))
+ return -EINVAL;
+
+ if (!new_size || !IS_ALIGNED(new_size, mm->chunk_size))
+ return -EINVAL;
+
+ if (new_size == gpu_buddy_block_size(mm, block))
+ return 0;
+
+ new_start = block_start;
+ if (start) {
+ new_start = *start;
+
+ if (new_start < block_start)
+ return -EINVAL;
+
+ if (!IS_ALIGNED(new_start, mm->chunk_size))
+ return -EINVAL;
+
+ if (range_overflows(new_start, new_size, block_end))
+ return -EINVAL;
+ }
+
+ list_del(&block->link);
+ mark_free(mm, block);
+ mm->avail += gpu_buddy_block_size(mm, block);
+ if (gpu_buddy_block_is_clear(block))
+ mm->clear_avail += gpu_buddy_block_size(mm, block);
+
+ /* Prevent recursively freeing this node */
+ parent = block->parent;
+ block->parent = NULL;
+
+ list_add(&block->tmp_link, &dfs);
+ err = __alloc_range(mm, &dfs, new_start, new_size, blocks, NULL);
+ if (err) {
+ mark_allocated(mm, block);
+ mm->avail -= gpu_buddy_block_size(mm, block);
+ if (gpu_buddy_block_is_clear(block))
+ mm->clear_avail -= gpu_buddy_block_size(mm, block);
+ list_add(&block->link, blocks);
+ }
+
+ block->parent = parent;
+ return err;
+}
+EXPORT_SYMBOL(gpu_buddy_block_trim);
+
+static struct gpu_buddy_block *
+__gpu_buddy_alloc_blocks(struct gpu_buddy *mm,
+ u64 start, u64 end,
+ unsigned int order,
+ unsigned long flags)
+{
+ if (flags & GPU_BUDDY_RANGE_ALLOCATION)
+ /* Allocate traversing within the range */
+ return __gpu_buddy_alloc_range_bias(mm, start, end,
+ order, flags);
+ else
+ /* Allocate from freetree */
+ return alloc_from_freetree(mm, order, flags);
+}
+
+/**
+ * gpu_buddy_alloc_blocks - allocate power-of-two blocks
+ *
+ * @mm: GPU buddy manager to allocate from
+ * @start: start of the allowed range for this block
+ * @end: end of the allowed range for this block
+ * @size: size of the allocation in bytes
+ * @min_block_size: alignment of the allocation
+ * @blocks: output list head to add allocated blocks
+ * @flags: GPU_BUDDY_*_ALLOCATION flags
+ *
+ * alloc_range_bias() called on range limitations, which traverses
+ * the tree and returns the desired block.
+ *
+ * alloc_from_freetree() called when *no* range restrictions
+ * are enforced, which picks the block from the freetree.
+ *
+ * Returns:
+ * 0 on success, error code on failure.
+ */
+int gpu_buddy_alloc_blocks(struct gpu_buddy *mm,
+ u64 start, u64 end, u64 size,
+ u64 min_block_size,
+ struct list_head *blocks,
+ unsigned long flags)
+{
+ struct gpu_buddy_block *block = NULL;
+ u64 original_size, original_min_size;
+ unsigned int min_order, order;
+ LIST_HEAD(allocated);
+ unsigned long pages;
+ int err;
+
+ if (size < mm->chunk_size)
+ return -EINVAL;
+
+ if (min_block_size < mm->chunk_size)
+ return -EINVAL;
+
+ if (!is_power_of_2(min_block_size))
+ return -EINVAL;
+
+ if (!IS_ALIGNED(start | end | size, mm->chunk_size))
+ return -EINVAL;
+
+ if (end > mm->size)
+ return -EINVAL;
+
+ if (range_overflows(start, size, mm->size))
+ return -EINVAL;
+
+ /* Actual range allocation */
+ if (start + size == end) {
+ if (!IS_ALIGNED(start | end, min_block_size))
+ return -EINVAL;
+
+ return __gpu_buddy_alloc_range(mm, start, size, NULL, blocks);
+ }
+
+ original_size = size;
+ original_min_size = min_block_size;
+
+ /* Roundup the size to power of 2 */
+ if (flags & GPU_BUDDY_CONTIGUOUS_ALLOCATION) {
+ size = roundup_pow_of_two(size);
+ min_block_size = size;
+ /* Align size value to min_block_size */
+ } else if (!IS_ALIGNED(size, min_block_size)) {
+ size = round_up(size, min_block_size);
+ }
+
+ pages = size >> ilog2(mm->chunk_size);
+ order = fls(pages) - 1;
+ min_order = ilog2(min_block_size) - ilog2(mm->chunk_size);
+
+ if (order > mm->max_order || size > mm->size) {
+ if ((flags & GPU_BUDDY_CONTIGUOUS_ALLOCATION) &&
+ !(flags & GPU_BUDDY_RANGE_ALLOCATION))
+ return __alloc_contig_try_harder(mm, original_size,
+ original_min_size, blocks);
+
+ return -EINVAL;
+ }
+
+ do {
+ order = min(order, (unsigned int)fls(pages) - 1);
+ BUG_ON(order > mm->max_order);
+ BUG_ON(order < min_order);
+
+ do {
+ block = __gpu_buddy_alloc_blocks(mm, start,
+ end,
+ order,
+ flags);
+ if (!IS_ERR(block))
+ break;
+
+ if (order-- == min_order) {
+ /* Try allocation through force merge method */
+ if (mm->clear_avail &&
+ !__force_merge(mm, start, end, min_order)) {
+ block = __gpu_buddy_alloc_blocks(mm, start,
+ end,
+ min_order,
+ flags);
+ if (!IS_ERR(block)) {
+ order = min_order;
+ break;
+ }
+ }
+
+ /*
+ * Try contiguous block allocation through
+ * try harder method.
+ */
+ if (flags & GPU_BUDDY_CONTIGUOUS_ALLOCATION &&
+ !(flags & GPU_BUDDY_RANGE_ALLOCATION))
+ return __alloc_contig_try_harder(mm,
+ original_size,
+ original_min_size,
+ blocks);
+ err = -ENOSPC;
+ goto err_free;
+ }
+ } while (1);
+
+ mark_allocated(mm, block);
+ mm->avail -= gpu_buddy_block_size(mm, block);
+ if (gpu_buddy_block_is_clear(block))
+ mm->clear_avail -= gpu_buddy_block_size(mm, block);
+ kmemleak_update_trace(block);
+ list_add_tail(&block->link, &allocated);
+
+ pages -= BIT(order);
+
+ if (!pages)
+ break;
+ } while (1);
+
+ /* Trim the allocated block to the required size */
+ if (!(flags & GPU_BUDDY_TRIM_DISABLE) &&
+ original_size != size) {
+ struct list_head *trim_list;
+ LIST_HEAD(temp);
+ u64 trim_size;
+
+ trim_list = &allocated;
+ trim_size = original_size;
+
+ if (!list_is_singular(&allocated)) {
+ block = list_last_entry(&allocated, typeof(*block), link);
+ list_move(&block->link, &temp);
+ trim_list = &temp;
+ trim_size = gpu_buddy_block_size(mm, block) -
+ (size - original_size);
+ }
+
+ gpu_buddy_block_trim(mm,
+ NULL,
+ trim_size,
+ trim_list);
+
+ if (!list_empty(&temp))
+ list_splice_tail(trim_list, &allocated);
+ }
+
+ list_splice_tail(&allocated, blocks);
+ return 0;
+
+err_free:
+ gpu_buddy_free_list_internal(mm, &allocated);
+ return err;
+}
+EXPORT_SYMBOL(gpu_buddy_alloc_blocks);
+
+/**
+ * gpu_buddy_block_print - print block information
+ *
+ * @mm: GPU buddy manager
+ * @block: GPU buddy block
+ */
+void gpu_buddy_block_print(struct gpu_buddy *mm,
+ struct gpu_buddy_block *block)
+{
+ u64 start = gpu_buddy_block_offset(block);
+ u64 size = gpu_buddy_block_size(mm, block);
+
+ pr_info("%#018llx-%#018llx: %llu\n", start, start + size, size);
+}
+EXPORT_SYMBOL(gpu_buddy_block_print);
+
+/**
+ * gpu_buddy_print - print allocator state
+ *
+ * @mm: GPU buddy manager
+ * @p: GPU printer to use
+ */
+void gpu_buddy_print(struct gpu_buddy *mm)
+{
+ int order;
+
+ pr_info("chunk_size: %lluKiB, total: %lluMiB, free: %lluMiB, clear_free: %lluMiB\n",
+ mm->chunk_size >> 10, mm->size >> 20, mm->avail >> 20, mm->clear_avail >> 20);
+
+ for (order = mm->max_order; order >= 0; order--) {
+ struct gpu_buddy_block *block, *tmp;
+ struct rb_root *root;
+ u64 count = 0, free;
+ unsigned int tree;
+
+ for_each_free_tree(tree) {
+ root = &mm->free_trees[tree][order];
+
+ rbtree_postorder_for_each_entry_safe(block, tmp, root, rb) {
+ BUG_ON(!gpu_buddy_block_is_free(block));
+ count++;
+ }
+ }
+
+ free = count * (mm->chunk_size << order);
+ if (free < SZ_1M)
+ pr_info("order-%2d free: %8llu KiB, blocks: %llu\n",
+ order, free >> 10, count);
+ else
+ pr_info("order-%2d free: %8llu MiB, blocks: %llu\n",
+ order, free >> 20, count);
+ }
+}
+EXPORT_SYMBOL(gpu_buddy_print);
+
+static void gpu_buddy_module_exit(void)
+{
+ kmem_cache_destroy(slab_blocks);
+}
+
+static int __init gpu_buddy_module_init(void)
+{
+ slab_blocks = KMEM_CACHE(gpu_buddy_block, 0);
+ if (!slab_blocks)
+ return -ENOMEM;
+
+ return 0;
+}
+
+module_init(gpu_buddy_module_init);
+module_exit(gpu_buddy_module_exit);
+
+MODULE_DESCRIPTION("GPU Buddy Allocator");
+MODULE_LICENSE("Dual MIT/GPL");
--- a/drivers/gpu/drm/Kconfig
+++ b/drivers/gpu/drm/Kconfig
@@ -220,6 +220,7 @@ config DRM_GPUSVM
config DRM_BUDDY
tristate
depends on DRM
+ select GPU_BUDDY
help
A page based buddy allocator
@@ -416,10 +417,6 @@ config DRM_HYPERV
config DRM_PANEL_BACKLIGHT_QUIRKS
tristate
-config DRM_LIB_RANDOM
- bool
- default n
-
config DRM_PRIVACY_SCREEN
bool
default n
--- a/drivers/gpu/drm/Kconfig.debug
+++ b/drivers/gpu/drm/Kconfig.debug
@@ -69,7 +69,6 @@ config DRM_KUNIT_TEST
select DRM_EXPORT_FOR_TESTS if m
select DRM_GEM_SHMEM_HELPER
select DRM_KUNIT_TEST_HELPERS
- select DRM_LIB_RANDOM
select DRM_SYSFB_HELPER
select PRIME_NUMBERS
default KUNIT_ALL_TESTS
--- a/drivers/gpu/drm/Makefile
+++ b/drivers/gpu/drm/Makefile
@@ -77,7 +77,6 @@ drm-$(CONFIG_DRM_CLIENT) += \
drm_client.o \
drm_client_event.o \
drm_client_modeset.o
-drm-$(CONFIG_DRM_LIB_RANDOM) += lib/drm_random.o
drm-$(CONFIG_COMPAT) += drm_ioc32.o
drm-$(CONFIG_DRM_PANEL) += drm_panel.o
drm-$(CONFIG_OF) += drm_of.o
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
@@ -5416,7 +5416,7 @@ int amdgpu_ras_add_critical_region(struc
struct amdgpu_ras *con = amdgpu_ras_get_context(adev);
struct amdgpu_vram_mgr_resource *vres;
struct ras_critical_region *region;
- struct drm_buddy_block *block;
+ struct gpu_buddy_block *block;
int ret = 0;
if (!bo || !bo->tbo.resource)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_res_cursor.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_res_cursor.h
@@ -55,7 +55,7 @@ static inline void amdgpu_res_first(stru
uint64_t start, uint64_t size,
struct amdgpu_res_cursor *cur)
{
- struct drm_buddy_block *block;
+ struct gpu_buddy_block *block;
struct list_head *head, *next;
struct drm_mm_node *node;
@@ -71,7 +71,7 @@ static inline void amdgpu_res_first(stru
head = &to_amdgpu_vram_mgr_resource(res)->blocks;
block = list_first_entry_or_null(head,
- struct drm_buddy_block,
+ struct gpu_buddy_block,
link);
if (!block)
goto fallback;
@@ -81,7 +81,7 @@ static inline void amdgpu_res_first(stru
next = block->link.next;
if (next != head)
- block = list_entry(next, struct drm_buddy_block, link);
+ block = list_entry(next, struct gpu_buddy_block, link);
}
cur->start = amdgpu_vram_mgr_block_start(block) + start;
@@ -125,7 +125,7 @@ fallback:
*/
static inline void amdgpu_res_next(struct amdgpu_res_cursor *cur, uint64_t size)
{
- struct drm_buddy_block *block;
+ struct gpu_buddy_block *block;
struct drm_mm_node *node;
struct list_head *next;
@@ -146,7 +146,7 @@ static inline void amdgpu_res_next(struc
block = cur->node;
next = block->link.next;
- block = list_entry(next, struct drm_buddy_block, link);
+ block = list_entry(next, struct gpu_buddy_block, link);
cur->node = block;
cur->start = amdgpu_vram_mgr_block_start(block);
@@ -175,7 +175,7 @@ static inline void amdgpu_res_next(struc
*/
static inline bool amdgpu_res_cleared(struct amdgpu_res_cursor *cur)
{
- struct drm_buddy_block *block;
+ struct gpu_buddy_block *block;
switch (cur->mem_type) {
case TTM_PL_VRAM:
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c
@@ -25,6 +25,7 @@
#include <linux/dma-mapping.h>
#include <drm/ttm/ttm_range_manager.h>
#include <drm/drm_drv.h>
+#include <drm/drm_buddy.h>
#include "amdgpu.h"
#include "amdgpu_vm.h"
@@ -52,15 +53,15 @@ to_amdgpu_device(struct amdgpu_vram_mgr
return container_of(mgr, struct amdgpu_device, mman.vram_mgr);
}
-static inline struct drm_buddy_block *
+static inline struct gpu_buddy_block *
amdgpu_vram_mgr_first_block(struct list_head *list)
{
- return list_first_entry_or_null(list, struct drm_buddy_block, link);
+ return list_first_entry_or_null(list, struct gpu_buddy_block, link);
}
static inline bool amdgpu_is_vram_mgr_blocks_contiguous(struct list_head *head)
{
- struct drm_buddy_block *block;
+ struct gpu_buddy_block *block;
u64 start, size;
block = amdgpu_vram_mgr_first_block(head);
@@ -71,7 +72,7 @@ static inline bool amdgpu_is_vram_mgr_bl
start = amdgpu_vram_mgr_block_start(block);
size = amdgpu_vram_mgr_block_size(block);
- block = list_entry(block->link.next, struct drm_buddy_block, link);
+ block = list_entry(block->link.next, struct gpu_buddy_block, link);
if (start + size != amdgpu_vram_mgr_block_start(block))
return false;
}
@@ -81,7 +82,7 @@ static inline bool amdgpu_is_vram_mgr_bl
static inline u64 amdgpu_vram_mgr_blocks_size(struct list_head *head)
{
- struct drm_buddy_block *block;
+ struct gpu_buddy_block *block;
u64 size = 0;
list_for_each_entry(block, head, link)
@@ -254,7 +255,7 @@ const struct attribute_group amdgpu_vram
* Calculate how many bytes of the DRM BUDDY block are inside visible VRAM
*/
static u64 amdgpu_vram_mgr_vis_size(struct amdgpu_device *adev,
- struct drm_buddy_block *block)
+ struct gpu_buddy_block *block)
{
u64 start = amdgpu_vram_mgr_block_start(block);
u64 end = start + amdgpu_vram_mgr_block_size(block);
@@ -279,7 +280,7 @@ u64 amdgpu_vram_mgr_bo_visible_size(stru
struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
struct ttm_resource *res = bo->tbo.resource;
struct amdgpu_vram_mgr_resource *vres = to_amdgpu_vram_mgr_resource(res);
- struct drm_buddy_block *block;
+ struct gpu_buddy_block *block;
u64 usage = 0;
if (amdgpu_gmc_vram_full_visible(&adev->gmc))
@@ -299,15 +300,15 @@ static void amdgpu_vram_mgr_do_reserve(s
{
struct amdgpu_vram_mgr *mgr = to_vram_mgr(man);
struct amdgpu_device *adev = to_amdgpu_device(mgr);
- struct drm_buddy *mm = &mgr->mm;
+ struct gpu_buddy *mm = &mgr->mm;
struct amdgpu_vram_reservation *rsv, *temp;
- struct drm_buddy_block *block;
+ struct gpu_buddy_block *block;
uint64_t vis_usage;
list_for_each_entry_safe(rsv, temp, &mgr->reservations_pending, blocks) {
- if (drm_buddy_alloc_blocks(mm, rsv->start, rsv->start + rsv->size,
+ if (gpu_buddy_alloc_blocks(mm, rsv->start, rsv->start + rsv->size,
rsv->size, mm->chunk_size, &rsv->allocated,
- DRM_BUDDY_RANGE_ALLOCATION))
+ GPU_BUDDY_RANGE_ALLOCATION))
continue;
block = amdgpu_vram_mgr_first_block(&rsv->allocated);
@@ -403,7 +404,7 @@ int amdgpu_vram_mgr_query_address_block_
uint64_t address, struct amdgpu_vram_block_info *info)
{
struct amdgpu_vram_mgr_resource *vres;
- struct drm_buddy_block *block;
+ struct gpu_buddy_block *block;
u64 start, size;
int ret = -ENOENT;
@@ -450,8 +451,8 @@ static int amdgpu_vram_mgr_new(struct tt
struct amdgpu_vram_mgr_resource *vres;
u64 size, remaining_size, lpfn, fpfn;
unsigned int adjust_dcc_size = 0;
- struct drm_buddy *mm = &mgr->mm;
- struct drm_buddy_block *block;
+ struct gpu_buddy *mm = &mgr->mm;
+ struct gpu_buddy_block *block;
unsigned long pages_per_block;
int r;
@@ -493,17 +494,17 @@ static int amdgpu_vram_mgr_new(struct tt
INIT_LIST_HEAD(&vres->blocks);
if (place->flags & TTM_PL_FLAG_TOPDOWN)
- vres->flags |= DRM_BUDDY_TOPDOWN_ALLOCATION;
+ vres->flags |= GPU_BUDDY_TOPDOWN_ALLOCATION;
if (bo->flags & AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS)
- vres->flags |= DRM_BUDDY_CONTIGUOUS_ALLOCATION;
+ vres->flags |= GPU_BUDDY_CONTIGUOUS_ALLOCATION;
if (bo->flags & AMDGPU_GEM_CREATE_VRAM_CLEARED)
- vres->flags |= DRM_BUDDY_CLEAR_ALLOCATION;
+ vres->flags |= GPU_BUDDY_CLEAR_ALLOCATION;
if (fpfn || lpfn != mgr->mm.size)
/* Allocate blocks in desired range */
- vres->flags |= DRM_BUDDY_RANGE_ALLOCATION;
+ vres->flags |= GPU_BUDDY_RANGE_ALLOCATION;
if (bo->flags & AMDGPU_GEM_CREATE_GFX12_DCC &&
adev->gmc.gmc_funcs->get_dcc_alignment)
@@ -516,7 +517,7 @@ static int amdgpu_vram_mgr_new(struct tt
dcc_size = roundup_pow_of_two(vres->base.size + adjust_dcc_size);
remaining_size = (u64)dcc_size;
- vres->flags |= DRM_BUDDY_TRIM_DISABLE;
+ vres->flags |= GPU_BUDDY_TRIM_DISABLE;
}
mutex_lock(&mgr->lock);
@@ -536,7 +537,7 @@ static int amdgpu_vram_mgr_new(struct tt
BUG_ON(min_block_size < mm->chunk_size);
- r = drm_buddy_alloc_blocks(mm, fpfn,
+ r = gpu_buddy_alloc_blocks(mm, fpfn,
lpfn,
size,
min_block_size,
@@ -545,7 +546,7 @@ static int amdgpu_vram_mgr_new(struct tt
if (unlikely(r == -ENOSPC) && pages_per_block == ~0ul &&
!(place->flags & TTM_PL_FLAG_CONTIGUOUS)) {
- vres->flags &= ~DRM_BUDDY_CONTIGUOUS_ALLOCATION;
+ vres->flags &= ~GPU_BUDDY_CONTIGUOUS_ALLOCATION;
pages_per_block = max_t(u32, 2UL << (20UL - PAGE_SHIFT),
tbo->page_alignment);
@@ -566,7 +567,7 @@ static int amdgpu_vram_mgr_new(struct tt
list_add_tail(&vres->vres_node, &mgr->allocated_vres_list);
if (bo->flags & AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS && adjust_dcc_size) {
- struct drm_buddy_block *dcc_block;
+ struct gpu_buddy_block *dcc_block;
unsigned long dcc_start;
u64 trim_start;
@@ -576,7 +577,7 @@ static int amdgpu_vram_mgr_new(struct tt
roundup((unsigned long)amdgpu_vram_mgr_block_start(dcc_block),
adjust_dcc_size);
trim_start = (u64)dcc_start;
- drm_buddy_block_trim(mm, &trim_start,
+ gpu_buddy_block_trim(mm, &trim_start,
(u64)vres->base.size,
&vres->blocks);
}
@@ -614,7 +615,7 @@ static int amdgpu_vram_mgr_new(struct tt
return 0;
error_free_blocks:
- drm_buddy_free_list(mm, &vres->blocks, 0);
+ gpu_buddy_free_list(mm, &vres->blocks, 0);
mutex_unlock(&mgr->lock);
error_fini:
ttm_resource_fini(man, &vres->base);
@@ -637,8 +638,8 @@ static void amdgpu_vram_mgr_del(struct t
struct amdgpu_vram_mgr_resource *vres = to_amdgpu_vram_mgr_resource(res);
struct amdgpu_vram_mgr *mgr = to_vram_mgr(man);
struct amdgpu_device *adev = to_amdgpu_device(mgr);
- struct drm_buddy *mm = &mgr->mm;
- struct drm_buddy_block *block;
+ struct gpu_buddy *mm = &mgr->mm;
+ struct gpu_buddy_block *block;
uint64_t vis_usage = 0;
mutex_lock(&mgr->lock);
@@ -649,7 +650,7 @@ static void amdgpu_vram_mgr_del(struct t
list_for_each_entry(block, &vres->blocks, link)
vis_usage += amdgpu_vram_mgr_vis_size(adev, block);
- drm_buddy_free_list(mm, &vres->blocks, vres->flags);
+ gpu_buddy_free_list(mm, &vres->blocks, vres->flags);
amdgpu_vram_mgr_do_reserve(man);
mutex_unlock(&mgr->lock);
@@ -688,7 +689,7 @@ int amdgpu_vram_mgr_alloc_sgt(struct amd
if (!*sgt)
return -ENOMEM;
- /* Determine the number of DRM_BUDDY blocks to export */
+ /* Determine the number of GPU_BUDDY blocks to export */
amdgpu_res_first(res, offset, length, &cursor);
while (cursor.remaining) {
num_entries++;
@@ -704,10 +705,10 @@ int amdgpu_vram_mgr_alloc_sgt(struct amd
sg->length = 0;
/*
- * Walk down DRM_BUDDY blocks to populate scatterlist nodes
- * @note: Use iterator api to get first the DRM_BUDDY block
+ * Walk down GPU_BUDDY blocks to populate scatterlist nodes
+ * @note: Use iterator api to get first the GPU_BUDDY block
* and the number of bytes from it. Access the following
- * DRM_BUDDY block(s) if more buffer needs to exported
+ * GPU_BUDDY block(s) if more buffer needs to exported
*/
amdgpu_res_first(res, offset, length, &cursor);
for_each_sgtable_sg((*sgt), sg, i) {
@@ -792,10 +793,10 @@ uint64_t amdgpu_vram_mgr_vis_usage(struc
void amdgpu_vram_mgr_clear_reset_blocks(struct amdgpu_device *adev)
{
struct amdgpu_vram_mgr *mgr = &adev->mman.vram_mgr;
- struct drm_buddy *mm = &mgr->mm;
+ struct gpu_buddy *mm = &mgr->mm;
mutex_lock(&mgr->lock);
- drm_buddy_reset_clear(mm, false);
+ gpu_buddy_reset_clear(mm, false);
mutex_unlock(&mgr->lock);
}
@@ -815,7 +816,7 @@ static bool amdgpu_vram_mgr_intersects(s
size_t size)
{
struct amdgpu_vram_mgr_resource *mgr = to_amdgpu_vram_mgr_resource(res);
- struct drm_buddy_block *block;
+ struct gpu_buddy_block *block;
/* Check each drm buddy block individually */
list_for_each_entry(block, &mgr->blocks, link) {
@@ -848,7 +849,7 @@ static bool amdgpu_vram_mgr_compatible(s
size_t size)
{
struct amdgpu_vram_mgr_resource *mgr = to_amdgpu_vram_mgr_resource(res);
- struct drm_buddy_block *block;
+ struct gpu_buddy_block *block;
/* Check each drm buddy block individually */
list_for_each_entry(block, &mgr->blocks, link) {
@@ -877,7 +878,7 @@ static void amdgpu_vram_mgr_debug(struct
struct drm_printer *printer)
{
struct amdgpu_vram_mgr *mgr = to_vram_mgr(man);
- struct drm_buddy *mm = &mgr->mm;
+ struct gpu_buddy *mm = &mgr->mm;
struct amdgpu_vram_reservation *rsv;
drm_printf(printer, " vis usage:%llu\n",
@@ -930,7 +931,7 @@ int amdgpu_vram_mgr_init(struct amdgpu_d
mgr->default_page_size = PAGE_SIZE;
man->func = &amdgpu_vram_mgr_func;
- err = drm_buddy_init(&mgr->mm, man->size, PAGE_SIZE);
+ err = gpu_buddy_init(&mgr->mm, man->size, PAGE_SIZE);
if (err)
return err;
@@ -965,11 +966,11 @@ void amdgpu_vram_mgr_fini(struct amdgpu_
kfree(rsv);
list_for_each_entry_safe(rsv, temp, &mgr->reserved_pages, blocks) {
- drm_buddy_free_list(&mgr->mm, &rsv->allocated, 0);
+ gpu_buddy_free_list(&mgr->mm, &rsv->allocated, 0);
kfree(rsv);
}
if (!adev->gmc.is_app_apu)
- drm_buddy_fini(&mgr->mm);
+ gpu_buddy_fini(&mgr->mm);
mutex_unlock(&mgr->lock);
ttm_resource_manager_cleanup(man);
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.h
@@ -24,11 +24,11 @@
#ifndef __AMDGPU_VRAM_MGR_H__
#define __AMDGPU_VRAM_MGR_H__
-#include <drm/drm_buddy.h>
+#include <linux/gpu_buddy.h>
struct amdgpu_vram_mgr {
struct ttm_resource_manager manager;
- struct drm_buddy mm;
+ struct gpu_buddy mm;
/* protects access to buffer objects */
struct mutex lock;
struct list_head reservations_pending;
@@ -57,19 +57,19 @@ struct amdgpu_vram_mgr_resource {
struct amdgpu_vres_task task;
};
-static inline u64 amdgpu_vram_mgr_block_start(struct drm_buddy_block *block)
+static inline u64 amdgpu_vram_mgr_block_start(struct gpu_buddy_block *block)
{
- return drm_buddy_block_offset(block);
+ return gpu_buddy_block_offset(block);
}
-static inline u64 amdgpu_vram_mgr_block_size(struct drm_buddy_block *block)
+static inline u64 amdgpu_vram_mgr_block_size(struct gpu_buddy_block *block)
{
- return (u64)PAGE_SIZE << drm_buddy_block_order(block);
+ return (u64)PAGE_SIZE << gpu_buddy_block_order(block);
}
-static inline bool amdgpu_vram_mgr_is_cleared(struct drm_buddy_block *block)
+static inline bool amdgpu_vram_mgr_is_cleared(struct gpu_buddy_block *block)
{
- return drm_buddy_block_is_clear(block);
+ return gpu_buddy_block_is_clear(block);
}
static inline struct amdgpu_vram_mgr_resource *
@@ -82,8 +82,8 @@ static inline void amdgpu_vram_mgr_set_c
{
struct amdgpu_vram_mgr_resource *ares = to_amdgpu_vram_mgr_resource(res);
- WARN_ON(ares->flags & DRM_BUDDY_CLEARED);
- ares->flags |= DRM_BUDDY_CLEARED;
+ WARN_ON(ares->flags & GPU_BUDDY_CLEARED);
+ ares->flags |= GPU_BUDDY_CLEARED;
}
int amdgpu_vram_mgr_query_address_block_info(struct amdgpu_vram_mgr *mgr,
--- a/drivers/gpu/drm/drm_buddy.c
+++ b/drivers/gpu/drm/drm_buddy.c
@@ -10,1250 +10,9 @@
#include <linux/module.h>
#include <linux/sizes.h>
+#include <linux/gpu_buddy.h>
#include <drm/drm_buddy.h>
-
-enum drm_buddy_free_tree {
- DRM_BUDDY_CLEAR_TREE = 0,
- DRM_BUDDY_DIRTY_TREE,
- DRM_BUDDY_MAX_FREE_TREES,
-};
-
-static struct kmem_cache *slab_blocks;
-
-#define for_each_free_tree(tree) \
- for ((tree) = 0; (tree) < DRM_BUDDY_MAX_FREE_TREES; (tree)++)
-
-static struct drm_buddy_block *drm_block_alloc(struct drm_buddy *mm,
- struct drm_buddy_block *parent,
- unsigned int order,
- u64 offset)
-{
- struct drm_buddy_block *block;
-
- BUG_ON(order > DRM_BUDDY_MAX_ORDER);
-
- block = kmem_cache_zalloc(slab_blocks, GFP_KERNEL);
- if (!block)
- return NULL;
-
- block->header = offset;
- block->header |= order;
- block->parent = parent;
-
- RB_CLEAR_NODE(&block->rb);
-
- BUG_ON(block->header & DRM_BUDDY_HEADER_UNUSED);
- return block;
-}
-
-static void drm_block_free(struct drm_buddy *mm,
- struct drm_buddy_block *block)
-{
- kmem_cache_free(slab_blocks, block);
-}
-
-static enum drm_buddy_free_tree
-get_block_tree(struct drm_buddy_block *block)
-{
- return drm_buddy_block_is_clear(block) ?
- DRM_BUDDY_CLEAR_TREE : DRM_BUDDY_DIRTY_TREE;
-}
-
-static struct drm_buddy_block *
-rbtree_get_free_block(const struct rb_node *node)
-{
- return node ? rb_entry(node, struct drm_buddy_block, rb) : NULL;
-}
-
-static struct drm_buddy_block *
-rbtree_last_free_block(struct rb_root *root)
-{
- return rbtree_get_free_block(rb_last(root));
-}
-
-static bool rbtree_is_empty(struct rb_root *root)
-{
- return RB_EMPTY_ROOT(root);
-}
-
-static bool drm_buddy_block_offset_less(const struct drm_buddy_block *block,
- const struct drm_buddy_block *node)
-{
- return drm_buddy_block_offset(block) < drm_buddy_block_offset(node);
-}
-
-static bool rbtree_block_offset_less(struct rb_node *block,
- const struct rb_node *node)
-{
- return drm_buddy_block_offset_less(rbtree_get_free_block(block),
- rbtree_get_free_block(node));
-}
-
-static void rbtree_insert(struct drm_buddy *mm,
- struct drm_buddy_block *block,
- enum drm_buddy_free_tree tree)
-{
- rb_add(&block->rb,
- &mm->free_trees[tree][drm_buddy_block_order(block)],
- rbtree_block_offset_less);
-}
-
-static void rbtree_remove(struct drm_buddy *mm,
- struct drm_buddy_block *block)
-{
- unsigned int order = drm_buddy_block_order(block);
- enum drm_buddy_free_tree tree;
- struct rb_root *root;
-
- tree = get_block_tree(block);
- root = &mm->free_trees[tree][order];
-
- rb_erase(&block->rb, root);
- RB_CLEAR_NODE(&block->rb);
-}
-
-static void clear_reset(struct drm_buddy_block *block)
-{
- block->header &= ~DRM_BUDDY_HEADER_CLEAR;
-}
-
-static void mark_cleared(struct drm_buddy_block *block)
-{
- block->header |= DRM_BUDDY_HEADER_CLEAR;
-}
-
-static void mark_allocated(struct drm_buddy *mm,
- struct drm_buddy_block *block)
-{
- block->header &= ~DRM_BUDDY_HEADER_STATE;
- block->header |= DRM_BUDDY_ALLOCATED;
-
- rbtree_remove(mm, block);
-}
-
-static void mark_free(struct drm_buddy *mm,
- struct drm_buddy_block *block)
-{
- enum drm_buddy_free_tree tree;
-
- block->header &= ~DRM_BUDDY_HEADER_STATE;
- block->header |= DRM_BUDDY_FREE;
-
- tree = get_block_tree(block);
- rbtree_insert(mm, block, tree);
-}
-
-static void mark_split(struct drm_buddy *mm,
- struct drm_buddy_block *block)
-{
- block->header &= ~DRM_BUDDY_HEADER_STATE;
- block->header |= DRM_BUDDY_SPLIT;
-
- rbtree_remove(mm, block);
-}
-
-static inline bool overlaps(u64 s1, u64 e1, u64 s2, u64 e2)
-{
- return s1 <= e2 && e1 >= s2;
-}
-
-static inline bool contains(u64 s1, u64 e1, u64 s2, u64 e2)
-{
- return s1 <= s2 && e1 >= e2;
-}
-
-static struct drm_buddy_block *
-__get_buddy(struct drm_buddy_block *block)
-{
- struct drm_buddy_block *parent;
-
- parent = block->parent;
- if (!parent)
- return NULL;
-
- if (parent->left == block)
- return parent->right;
-
- return parent->left;
-}
-
-static unsigned int __drm_buddy_free(struct drm_buddy *mm,
- struct drm_buddy_block *block,
- bool force_merge)
-{
- struct drm_buddy_block *parent;
- unsigned int order;
-
- while ((parent = block->parent)) {
- struct drm_buddy_block *buddy;
-
- buddy = __get_buddy(block);
-
- if (!drm_buddy_block_is_free(buddy))
- break;
-
- if (!force_merge) {
- /*
- * Check the block and its buddy clear state and exit
- * the loop if they both have the dissimilar state.
- */
- if (drm_buddy_block_is_clear(block) !=
- drm_buddy_block_is_clear(buddy))
- break;
-
- if (drm_buddy_block_is_clear(block))
- mark_cleared(parent);
- }
-
- rbtree_remove(mm, buddy);
- if (force_merge && drm_buddy_block_is_clear(buddy))
- mm->clear_avail -= drm_buddy_block_size(mm, buddy);
-
- drm_block_free(mm, block);
- drm_block_free(mm, buddy);
-
- block = parent;
- }
-
- order = drm_buddy_block_order(block);
- mark_free(mm, block);
-
- return order;
-}
-
-static int __force_merge(struct drm_buddy *mm,
- u64 start,
- u64 end,
- unsigned int min_order)
-{
- unsigned int tree, order;
- int i;
-
- if (!min_order)
- return -ENOMEM;
-
- if (min_order > mm->max_order)
- return -EINVAL;
-
- for_each_free_tree(tree) {
- for (i = min_order - 1; i >= 0; i--) {
- struct rb_node *iter = rb_last(&mm->free_trees[tree][i]);
-
- while (iter) {
- struct drm_buddy_block *block, *buddy;
- u64 block_start, block_end;
-
- block = rbtree_get_free_block(iter);
- iter = rb_prev(iter);
-
- if (!block || !block->parent)
- continue;
-
- block_start = drm_buddy_block_offset(block);
- block_end = block_start + drm_buddy_block_size(mm, block) - 1;
-
- if (!contains(start, end, block_start, block_end))
- continue;
-
- buddy = __get_buddy(block);
- if (!drm_buddy_block_is_free(buddy))
- continue;
-
- WARN_ON(drm_buddy_block_is_clear(block) ==
- drm_buddy_block_is_clear(buddy));
-
- /*
- * Advance to the next node when the current node is the buddy,
- * as freeing the block will also remove its buddy from the tree.
- */
- if (iter == &buddy->rb)
- iter = rb_prev(iter);
-
- rbtree_remove(mm, block);
- if (drm_buddy_block_is_clear(block))
- mm->clear_avail -= drm_buddy_block_size(mm, block);
-
- order = __drm_buddy_free(mm, block, true);
- if (order >= min_order)
- return 0;
- }
- }
- }
-
- return -ENOMEM;
-}
-
-/**
- * drm_buddy_init - init memory manager
- *
- * @mm: DRM buddy manager to initialize
- * @size: size in bytes to manage
- * @chunk_size: minimum page size in bytes for our allocations
- *
- * Initializes the memory manager and its resources.
- *
- * Returns:
- * 0 on success, error code on failure.
- */
-int drm_buddy_init(struct drm_buddy *mm, u64 size, u64 chunk_size)
-{
- unsigned int i, j, root_count = 0;
- u64 offset = 0;
-
- if (size < chunk_size)
- return -EINVAL;
-
- if (chunk_size < SZ_4K)
- return -EINVAL;
-
- if (!is_power_of_2(chunk_size))
- return -EINVAL;
-
- size = round_down(size, chunk_size);
-
- mm->size = size;
- mm->avail = size;
- mm->clear_avail = 0;
- mm->chunk_size = chunk_size;
- mm->max_order = ilog2(size) - ilog2(chunk_size);
-
- BUG_ON(mm->max_order > DRM_BUDDY_MAX_ORDER);
-
- mm->free_trees = kmalloc_array(DRM_BUDDY_MAX_FREE_TREES,
- sizeof(*mm->free_trees),
- GFP_KERNEL);
- if (!mm->free_trees)
- return -ENOMEM;
-
- for_each_free_tree(i) {
- mm->free_trees[i] = kmalloc_array(mm->max_order + 1,
- sizeof(struct rb_root),
- GFP_KERNEL);
- if (!mm->free_trees[i])
- goto out_free_tree;
-
- for (j = 0; j <= mm->max_order; ++j)
- mm->free_trees[i][j] = RB_ROOT;
- }
-
- mm->n_roots = hweight64(size);
-
- mm->roots = kmalloc_array(mm->n_roots,
- sizeof(struct drm_buddy_block *),
- GFP_KERNEL);
- if (!mm->roots)
- goto out_free_tree;
-
- /*
- * Split into power-of-two blocks, in case we are given a size that is
- * not itself a power-of-two.
- */
- do {
- struct drm_buddy_block *root;
- unsigned int order;
- u64 root_size;
-
- order = ilog2(size) - ilog2(chunk_size);
- root_size = chunk_size << order;
-
- root = drm_block_alloc(mm, NULL, order, offset);
- if (!root)
- goto out_free_roots;
-
- mark_free(mm, root);
-
- BUG_ON(root_count > mm->max_order);
- BUG_ON(drm_buddy_block_size(mm, root) < chunk_size);
-
- mm->roots[root_count] = root;
-
- offset += root_size;
- size -= root_size;
- root_count++;
- } while (size);
-
- return 0;
-
-out_free_roots:
- while (root_count--)
- drm_block_free(mm, mm->roots[root_count]);
- kfree(mm->roots);
-out_free_tree:
- while (i--)
- kfree(mm->free_trees[i]);
- kfree(mm->free_trees);
- return -ENOMEM;
-}
-EXPORT_SYMBOL(drm_buddy_init);
-
-/**
- * drm_buddy_fini - tear down the memory manager
- *
- * @mm: DRM buddy manager to free
- *
- * Cleanup memory manager resources and the freetree
- */
-void drm_buddy_fini(struct drm_buddy *mm)
-{
- u64 root_size, size, start;
- unsigned int order;
- int i;
-
- size = mm->size;
-
- for (i = 0; i < mm->n_roots; ++i) {
- order = ilog2(size) - ilog2(mm->chunk_size);
- start = drm_buddy_block_offset(mm->roots[i]);
- __force_merge(mm, start, start + size, order);
-
- if (WARN_ON(!drm_buddy_block_is_free(mm->roots[i])))
- kunit_fail_current_test("buddy_fini() root");
-
- drm_block_free(mm, mm->roots[i]);
-
- root_size = mm->chunk_size << order;
- size -= root_size;
- }
-
- WARN_ON(mm->avail != mm->size);
-
- for_each_free_tree(i)
- kfree(mm->free_trees[i]);
- kfree(mm->free_trees);
- kfree(mm->roots);
-}
-EXPORT_SYMBOL(drm_buddy_fini);
-
-static int split_block(struct drm_buddy *mm,
- struct drm_buddy_block *block)
-{
- unsigned int block_order = drm_buddy_block_order(block) - 1;
- u64 offset = drm_buddy_block_offset(block);
-
- BUG_ON(!drm_buddy_block_is_free(block));
- BUG_ON(!drm_buddy_block_order(block));
-
- block->left = drm_block_alloc(mm, block, block_order, offset);
- if (!block->left)
- return -ENOMEM;
-
- block->right = drm_block_alloc(mm, block, block_order,
- offset + (mm->chunk_size << block_order));
- if (!block->right) {
- drm_block_free(mm, block->left);
- return -ENOMEM;
- }
-
- mark_split(mm, block);
-
- if (drm_buddy_block_is_clear(block)) {
- mark_cleared(block->left);
- mark_cleared(block->right);
- clear_reset(block);
- }
-
- mark_free(mm, block->left);
- mark_free(mm, block->right);
-
- return 0;
-}
-
-/**
- * drm_get_buddy - get buddy address
- *
- * @block: DRM buddy block
- *
- * Returns the corresponding buddy block for @block, or NULL
- * if this is a root block and can't be merged further.
- * Requires some kind of locking to protect against
- * any concurrent allocate and free operations.
- */
-struct drm_buddy_block *
-drm_get_buddy(struct drm_buddy_block *block)
-{
- return __get_buddy(block);
-}
-EXPORT_SYMBOL(drm_get_buddy);
-
-/**
- * drm_buddy_reset_clear - reset blocks clear state
- *
- * @mm: DRM buddy manager
- * @is_clear: blocks clear state
- *
- * Reset the clear state based on @is_clear value for each block
- * in the freetree.
- */
-void drm_buddy_reset_clear(struct drm_buddy *mm, bool is_clear)
-{
- enum drm_buddy_free_tree src_tree, dst_tree;
- u64 root_size, size, start;
- unsigned int order;
- int i;
-
- size = mm->size;
- for (i = 0; i < mm->n_roots; ++i) {
- order = ilog2(size) - ilog2(mm->chunk_size);
- start = drm_buddy_block_offset(mm->roots[i]);
- __force_merge(mm, start, start + size, order);
-
- root_size = mm->chunk_size << order;
- size -= root_size;
- }
-
- src_tree = is_clear ? DRM_BUDDY_DIRTY_TREE : DRM_BUDDY_CLEAR_TREE;
- dst_tree = is_clear ? DRM_BUDDY_CLEAR_TREE : DRM_BUDDY_DIRTY_TREE;
-
- for (i = 0; i <= mm->max_order; ++i) {
- struct rb_root *root = &mm->free_trees[src_tree][i];
- struct drm_buddy_block *block, *tmp;
-
- rbtree_postorder_for_each_entry_safe(block, tmp, root, rb) {
- rbtree_remove(mm, block);
- if (is_clear) {
- mark_cleared(block);
- mm->clear_avail += drm_buddy_block_size(mm, block);
- } else {
- clear_reset(block);
- mm->clear_avail -= drm_buddy_block_size(mm, block);
- }
-
- rbtree_insert(mm, block, dst_tree);
- }
- }
-}
-EXPORT_SYMBOL(drm_buddy_reset_clear);
-
-/**
- * drm_buddy_free_block - free a block
- *
- * @mm: DRM buddy manager
- * @block: block to be freed
- */
-void drm_buddy_free_block(struct drm_buddy *mm,
- struct drm_buddy_block *block)
-{
- BUG_ON(!drm_buddy_block_is_allocated(block));
- mm->avail += drm_buddy_block_size(mm, block);
- if (drm_buddy_block_is_clear(block))
- mm->clear_avail += drm_buddy_block_size(mm, block);
-
- __drm_buddy_free(mm, block, false);
-}
-EXPORT_SYMBOL(drm_buddy_free_block);
-
-static void __drm_buddy_free_list(struct drm_buddy *mm,
- struct list_head *objects,
- bool mark_clear,
- bool mark_dirty)
-{
- struct drm_buddy_block *block, *on;
-
- WARN_ON(mark_dirty && mark_clear);
-
- list_for_each_entry_safe(block, on, objects, link) {
- if (mark_clear)
- mark_cleared(block);
- else if (mark_dirty)
- clear_reset(block);
- drm_buddy_free_block(mm, block);
- cond_resched();
- }
- INIT_LIST_HEAD(objects);
-}
-
-static void drm_buddy_free_list_internal(struct drm_buddy *mm,
- struct list_head *objects)
-{
- /*
- * Don't touch the clear/dirty bit, since allocation is still internal
- * at this point. For example we might have just failed part of the
- * allocation.
- */
- __drm_buddy_free_list(mm, objects, false, false);
-}
-
-/**
- * drm_buddy_free_list - free blocks
- *
- * @mm: DRM buddy manager
- * @objects: input list head to free blocks
- * @flags: optional flags like DRM_BUDDY_CLEARED
- */
-void drm_buddy_free_list(struct drm_buddy *mm,
- struct list_head *objects,
- unsigned int flags)
-{
- bool mark_clear = flags & DRM_BUDDY_CLEARED;
-
- __drm_buddy_free_list(mm, objects, mark_clear, !mark_clear);
-}
-EXPORT_SYMBOL(drm_buddy_free_list);
-
-static bool block_incompatible(struct drm_buddy_block *block, unsigned int flags)
-{
- bool needs_clear = flags & DRM_BUDDY_CLEAR_ALLOCATION;
-
- return needs_clear != drm_buddy_block_is_clear(block);
-}
-
-static struct drm_buddy_block *
-__alloc_range_bias(struct drm_buddy *mm,
- u64 start, u64 end,
- unsigned int order,
- unsigned long flags,
- bool fallback)
-{
- u64 req_size = mm->chunk_size << order;
- struct drm_buddy_block *block;
- struct drm_buddy_block *buddy;
- LIST_HEAD(dfs);
- int err;
- int i;
-
- end = end - 1;
-
- for (i = 0; i < mm->n_roots; ++i)
- list_add_tail(&mm->roots[i]->tmp_link, &dfs);
-
- do {
- u64 block_start;
- u64 block_end;
-
- block = list_first_entry_or_null(&dfs,
- struct drm_buddy_block,
- tmp_link);
- if (!block)
- break;
-
- list_del(&block->tmp_link);
-
- if (drm_buddy_block_order(block) < order)
- continue;
-
- block_start = drm_buddy_block_offset(block);
- block_end = block_start + drm_buddy_block_size(mm, block) - 1;
-
- if (!overlaps(start, end, block_start, block_end))
- continue;
-
- if (drm_buddy_block_is_allocated(block))
- continue;
-
- if (block_start < start || block_end > end) {
- u64 adjusted_start = max(block_start, start);
- u64 adjusted_end = min(block_end, end);
-
- if (round_down(adjusted_end + 1, req_size) <=
- round_up(adjusted_start, req_size))
- continue;
- }
-
- if (!fallback && block_incompatible(block, flags))
- continue;
-
- if (contains(start, end, block_start, block_end) &&
- order == drm_buddy_block_order(block)) {
- /*
- * Find the free block within the range.
- */
- if (drm_buddy_block_is_free(block))
- return block;
-
- continue;
- }
-
- if (!drm_buddy_block_is_split(block)) {
- err = split_block(mm, block);
- if (unlikely(err))
- goto err_undo;
- }
-
- list_add(&block->right->tmp_link, &dfs);
- list_add(&block->left->tmp_link, &dfs);
- } while (1);
-
- return ERR_PTR(-ENOSPC);
-
-err_undo:
- /*
- * We really don't want to leave around a bunch of split blocks, since
- * bigger is better, so make sure we merge everything back before we
- * free the allocated blocks.
- */
- buddy = __get_buddy(block);
- if (buddy &&
- (drm_buddy_block_is_free(block) &&
- drm_buddy_block_is_free(buddy)))
- __drm_buddy_free(mm, block, false);
- return ERR_PTR(err);
-}
-
-static struct drm_buddy_block *
-__drm_buddy_alloc_range_bias(struct drm_buddy *mm,
- u64 start, u64 end,
- unsigned int order,
- unsigned long flags)
-{
- struct drm_buddy_block *block;
- bool fallback = false;
-
- block = __alloc_range_bias(mm, start, end, order,
- flags, fallback);
- if (IS_ERR(block))
- return __alloc_range_bias(mm, start, end, order,
- flags, !fallback);
-
- return block;
-}
-
-static struct drm_buddy_block *
-get_maxblock(struct drm_buddy *mm,
- unsigned int order,
- enum drm_buddy_free_tree tree)
-{
- struct drm_buddy_block *max_block = NULL, *block = NULL;
- struct rb_root *root;
- unsigned int i;
-
- for (i = order; i <= mm->max_order; ++i) {
- root = &mm->free_trees[tree][i];
- block = rbtree_last_free_block(root);
- if (!block)
- continue;
-
- if (!max_block) {
- max_block = block;
- continue;
- }
-
- if (drm_buddy_block_offset(block) >
- drm_buddy_block_offset(max_block)) {
- max_block = block;
- }
- }
-
- return max_block;
-}
-
-static struct drm_buddy_block *
-alloc_from_freetree(struct drm_buddy *mm,
- unsigned int order,
- unsigned long flags)
-{
- struct drm_buddy_block *block = NULL;
- struct rb_root *root;
- enum drm_buddy_free_tree tree;
- unsigned int tmp;
- int err;
-
- tree = (flags & DRM_BUDDY_CLEAR_ALLOCATION) ?
- DRM_BUDDY_CLEAR_TREE : DRM_BUDDY_DIRTY_TREE;
-
- if (flags & DRM_BUDDY_TOPDOWN_ALLOCATION) {
- block = get_maxblock(mm, order, tree);
- if (block)
- /* Store the obtained block order */
- tmp = drm_buddy_block_order(block);
- } else {
- for (tmp = order; tmp <= mm->max_order; ++tmp) {
- /* Get RB tree root for this order and tree */
- root = &mm->free_trees[tree][tmp];
- block = rbtree_last_free_block(root);
- if (block)
- break;
- }
- }
-
- if (!block) {
- /* Try allocating from the other tree */
- tree = (tree == DRM_BUDDY_CLEAR_TREE) ?
- DRM_BUDDY_DIRTY_TREE : DRM_BUDDY_CLEAR_TREE;
-
- for (tmp = order; tmp <= mm->max_order; ++tmp) {
- root = &mm->free_trees[tree][tmp];
- block = rbtree_last_free_block(root);
- if (block)
- break;
- }
-
- if (!block)
- return ERR_PTR(-ENOSPC);
- }
-
- BUG_ON(!drm_buddy_block_is_free(block));
-
- while (tmp != order) {
- err = split_block(mm, block);
- if (unlikely(err))
- goto err_undo;
-
- block = block->right;
- tmp--;
- }
- return block;
-
-err_undo:
- if (tmp != order)
- __drm_buddy_free(mm, block, false);
- return ERR_PTR(err);
-}
-
-static int __alloc_range(struct drm_buddy *mm,
- struct list_head *dfs,
- u64 start, u64 size,
- struct list_head *blocks,
- u64 *total_allocated_on_err)
-{
- struct drm_buddy_block *block;
- struct drm_buddy_block *buddy;
- u64 total_allocated = 0;
- LIST_HEAD(allocated);
- u64 end;
- int err;
-
- end = start + size - 1;
-
- do {
- u64 block_start;
- u64 block_end;
-
- block = list_first_entry_or_null(dfs,
- struct drm_buddy_block,
- tmp_link);
- if (!block)
- break;
-
- list_del(&block->tmp_link);
-
- block_start = drm_buddy_block_offset(block);
- block_end = block_start + drm_buddy_block_size(mm, block) - 1;
-
- if (!overlaps(start, end, block_start, block_end))
- continue;
-
- if (drm_buddy_block_is_allocated(block)) {
- err = -ENOSPC;
- goto err_free;
- }
-
- if (contains(start, end, block_start, block_end)) {
- if (drm_buddy_block_is_free(block)) {
- mark_allocated(mm, block);
- total_allocated += drm_buddy_block_size(mm, block);
- mm->avail -= drm_buddy_block_size(mm, block);
- if (drm_buddy_block_is_clear(block))
- mm->clear_avail -= drm_buddy_block_size(mm, block);
- list_add_tail(&block->link, &allocated);
- continue;
- } else if (!mm->clear_avail) {
- err = -ENOSPC;
- goto err_free;
- }
- }
-
- if (!drm_buddy_block_is_split(block)) {
- err = split_block(mm, block);
- if (unlikely(err))
- goto err_undo;
- }
-
- list_add(&block->right->tmp_link, dfs);
- list_add(&block->left->tmp_link, dfs);
- } while (1);
-
- if (total_allocated < size) {
- err = -ENOSPC;
- goto err_free;
- }
-
- list_splice_tail(&allocated, blocks);
-
- return 0;
-
-err_undo:
- /*
- * We really don't want to leave around a bunch of split blocks, since
- * bigger is better, so make sure we merge everything back before we
- * free the allocated blocks.
- */
- buddy = __get_buddy(block);
- if (buddy &&
- (drm_buddy_block_is_free(block) &&
- drm_buddy_block_is_free(buddy)))
- __drm_buddy_free(mm, block, false);
-
-err_free:
- if (err == -ENOSPC && total_allocated_on_err) {
- list_splice_tail(&allocated, blocks);
- *total_allocated_on_err = total_allocated;
- } else {
- drm_buddy_free_list_internal(mm, &allocated);
- }
-
- return err;
-}
-
-static int __drm_buddy_alloc_range(struct drm_buddy *mm,
- u64 start,
- u64 size,
- u64 *total_allocated_on_err,
- struct list_head *blocks)
-{
- LIST_HEAD(dfs);
- int i;
-
- for (i = 0; i < mm->n_roots; ++i)
- list_add_tail(&mm->roots[i]->tmp_link, &dfs);
-
- return __alloc_range(mm, &dfs, start, size,
- blocks, total_allocated_on_err);
-}
-
-static int __alloc_contig_try_harder(struct drm_buddy *mm,
- u64 size,
- u64 min_block_size,
- struct list_head *blocks)
-{
- u64 rhs_offset, lhs_offset, lhs_size, filled;
- struct drm_buddy_block *block;
- unsigned int tree, order;
- LIST_HEAD(blocks_lhs);
- unsigned long pages;
- u64 modify_size;
- int err;
-
- modify_size = rounddown_pow_of_two(size);
- pages = modify_size >> ilog2(mm->chunk_size);
- order = fls(pages) - 1;
- if (order == 0)
- return -ENOSPC;
-
- for_each_free_tree(tree) {
- struct rb_root *root;
- struct rb_node *iter;
-
- root = &mm->free_trees[tree][order];
- if (rbtree_is_empty(root))
- continue;
-
- iter = rb_last(root);
- while (iter) {
- block = rbtree_get_free_block(iter);
-
- /* Allocate blocks traversing RHS */
- rhs_offset = drm_buddy_block_offset(block);
- err = __drm_buddy_alloc_range(mm, rhs_offset, size,
- &filled, blocks);
- if (!err || err != -ENOSPC)
- return err;
-
- lhs_size = max((size - filled), min_block_size);
- if (!IS_ALIGNED(lhs_size, min_block_size))
- lhs_size = round_up(lhs_size, min_block_size);
-
- /* Allocate blocks traversing LHS */
- lhs_offset = drm_buddy_block_offset(block) - lhs_size;
- err = __drm_buddy_alloc_range(mm, lhs_offset, lhs_size,
- NULL, &blocks_lhs);
- if (!err) {
- list_splice(&blocks_lhs, blocks);
- return 0;
- } else if (err != -ENOSPC) {
- drm_buddy_free_list_internal(mm, blocks);
- return err;
- }
- /* Free blocks for the next iteration */
- drm_buddy_free_list_internal(mm, blocks);
-
- iter = rb_prev(iter);
- }
- }
-
- return -ENOSPC;
-}
-
-/**
- * drm_buddy_block_trim - free unused pages
- *
- * @mm: DRM buddy manager
- * @start: start address to begin the trimming.
- * @new_size: original size requested
- * @blocks: Input and output list of allocated blocks.
- * MUST contain single block as input to be trimmed.
- * On success will contain the newly allocated blocks
- * making up the @new_size. Blocks always appear in
- * ascending order
- *
- * For contiguous allocation, we round up the size to the nearest
- * power of two value, drivers consume *actual* size, so remaining
- * portions are unused and can be optionally freed with this function
- *
- * Returns:
- * 0 on success, error code on failure.
- */
-int drm_buddy_block_trim(struct drm_buddy *mm,
- u64 *start,
- u64 new_size,
- struct list_head *blocks)
-{
- struct drm_buddy_block *parent;
- struct drm_buddy_block *block;
- u64 block_start, block_end;
- LIST_HEAD(dfs);
- u64 new_start;
- int err;
-
- if (!list_is_singular(blocks))
- return -EINVAL;
-
- block = list_first_entry(blocks,
- struct drm_buddy_block,
- link);
-
- block_start = drm_buddy_block_offset(block);
- block_end = block_start + drm_buddy_block_size(mm, block);
-
- if (WARN_ON(!drm_buddy_block_is_allocated(block)))
- return -EINVAL;
-
- if (new_size > drm_buddy_block_size(mm, block))
- return -EINVAL;
-
- if (!new_size || !IS_ALIGNED(new_size, mm->chunk_size))
- return -EINVAL;
-
- if (new_size == drm_buddy_block_size(mm, block))
- return 0;
-
- new_start = block_start;
- if (start) {
- new_start = *start;
-
- if (new_start < block_start)
- return -EINVAL;
-
- if (!IS_ALIGNED(new_start, mm->chunk_size))
- return -EINVAL;
-
- if (range_overflows(new_start, new_size, block_end))
- return -EINVAL;
- }
-
- list_del(&block->link);
- mark_free(mm, block);
- mm->avail += drm_buddy_block_size(mm, block);
- if (drm_buddy_block_is_clear(block))
- mm->clear_avail += drm_buddy_block_size(mm, block);
-
- /* Prevent recursively freeing this node */
- parent = block->parent;
- block->parent = NULL;
-
- list_add(&block->tmp_link, &dfs);
- err = __alloc_range(mm, &dfs, new_start, new_size, blocks, NULL);
- if (err) {
- mark_allocated(mm, block);
- mm->avail -= drm_buddy_block_size(mm, block);
- if (drm_buddy_block_is_clear(block))
- mm->clear_avail -= drm_buddy_block_size(mm, block);
- list_add(&block->link, blocks);
- }
-
- block->parent = parent;
- return err;
-}
-EXPORT_SYMBOL(drm_buddy_block_trim);
-
-static struct drm_buddy_block *
-__drm_buddy_alloc_blocks(struct drm_buddy *mm,
- u64 start, u64 end,
- unsigned int order,
- unsigned long flags)
-{
- if (flags & DRM_BUDDY_RANGE_ALLOCATION)
- /* Allocate traversing within the range */
- return __drm_buddy_alloc_range_bias(mm, start, end,
- order, flags);
- else
- /* Allocate from freetree */
- return alloc_from_freetree(mm, order, flags);
-}
-
-/**
- * drm_buddy_alloc_blocks - allocate power-of-two blocks
- *
- * @mm: DRM buddy manager to allocate from
- * @start: start of the allowed range for this block
- * @end: end of the allowed range for this block
- * @size: size of the allocation in bytes
- * @min_block_size: alignment of the allocation
- * @blocks: output list head to add allocated blocks
- * @flags: DRM_BUDDY_*_ALLOCATION flags
- *
- * alloc_range_bias() called on range limitations, which traverses
- * the tree and returns the desired block.
- *
- * alloc_from_freetree() called when *no* range restrictions
- * are enforced, which picks the block from the freetree.
- *
- * Returns:
- * 0 on success, error code on failure.
- */
-int drm_buddy_alloc_blocks(struct drm_buddy *mm,
- u64 start, u64 end, u64 size,
- u64 min_block_size,
- struct list_head *blocks,
- unsigned long flags)
-{
- struct drm_buddy_block *block = NULL;
- u64 original_size, original_min_size;
- unsigned int min_order, order;
- LIST_HEAD(allocated);
- unsigned long pages;
- int err;
-
- if (size < mm->chunk_size)
- return -EINVAL;
-
- if (min_block_size < mm->chunk_size)
- return -EINVAL;
-
- if (!is_power_of_2(min_block_size))
- return -EINVAL;
-
- if (!IS_ALIGNED(start | end | size, mm->chunk_size))
- return -EINVAL;
-
- if (end > mm->size)
- return -EINVAL;
-
- if (range_overflows(start, size, mm->size))
- return -EINVAL;
-
- /* Actual range allocation */
- if (start + size == end) {
- if (!IS_ALIGNED(start | end, min_block_size))
- return -EINVAL;
-
- return __drm_buddy_alloc_range(mm, start, size, NULL, blocks);
- }
-
- original_size = size;
- original_min_size = min_block_size;
-
- /* Roundup the size to power of 2 */
- if (flags & DRM_BUDDY_CONTIGUOUS_ALLOCATION) {
- size = roundup_pow_of_two(size);
- min_block_size = size;
- /* Align size value to min_block_size */
- } else if (!IS_ALIGNED(size, min_block_size)) {
- size = round_up(size, min_block_size);
- }
-
- pages = size >> ilog2(mm->chunk_size);
- order = fls(pages) - 1;
- min_order = ilog2(min_block_size) - ilog2(mm->chunk_size);
-
- if (order > mm->max_order || size > mm->size) {
- if ((flags & DRM_BUDDY_CONTIGUOUS_ALLOCATION) &&
- !(flags & DRM_BUDDY_RANGE_ALLOCATION))
- return __alloc_contig_try_harder(mm, original_size,
- original_min_size, blocks);
-
- return -EINVAL;
- }
-
- do {
- order = min(order, (unsigned int)fls(pages) - 1);
- BUG_ON(order > mm->max_order);
- BUG_ON(order < min_order);
-
- do {
- block = __drm_buddy_alloc_blocks(mm, start,
- end,
- order,
- flags);
- if (!IS_ERR(block))
- break;
-
- if (order-- == min_order) {
- /* Try allocation through force merge method */
- if (mm->clear_avail &&
- !__force_merge(mm, start, end, min_order)) {
- block = __drm_buddy_alloc_blocks(mm, start,
- end,
- min_order,
- flags);
- if (!IS_ERR(block)) {
- order = min_order;
- break;
- }
- }
-
- /*
- * Try contiguous block allocation through
- * try harder method.
- */
- if (flags & DRM_BUDDY_CONTIGUOUS_ALLOCATION &&
- !(flags & DRM_BUDDY_RANGE_ALLOCATION))
- return __alloc_contig_try_harder(mm,
- original_size,
- original_min_size,
- blocks);
- err = -ENOSPC;
- goto err_free;
- }
- } while (1);
-
- mark_allocated(mm, block);
- mm->avail -= drm_buddy_block_size(mm, block);
- if (drm_buddy_block_is_clear(block))
- mm->clear_avail -= drm_buddy_block_size(mm, block);
- kmemleak_update_trace(block);
- list_add_tail(&block->link, &allocated);
-
- pages -= BIT(order);
-
- if (!pages)
- break;
- } while (1);
-
- /* Trim the allocated block to the required size */
- if (!(flags & DRM_BUDDY_TRIM_DISABLE) &&
- original_size != size) {
- struct list_head *trim_list;
- LIST_HEAD(temp);
- u64 trim_size;
-
- trim_list = &allocated;
- trim_size = original_size;
-
- if (!list_is_singular(&allocated)) {
- block = list_last_entry(&allocated, typeof(*block), link);
- list_move(&block->link, &temp);
- trim_list = &temp;
- trim_size = drm_buddy_block_size(mm, block) -
- (size - original_size);
- }
-
- drm_buddy_block_trim(mm,
- NULL,
- trim_size,
- trim_list);
-
- if (!list_empty(&temp))
- list_splice_tail(trim_list, &allocated);
- }
-
- list_splice_tail(&allocated, blocks);
- return 0;
-
-err_free:
- drm_buddy_free_list_internal(mm, &allocated);
- return err;
-}
-EXPORT_SYMBOL(drm_buddy_alloc_blocks);
+#include <drm/drm_print.h>
/**
* drm_buddy_block_print - print block information
@@ -1262,12 +21,12 @@ EXPORT_SYMBOL(drm_buddy_alloc_blocks);
* @block: DRM buddy block
* @p: DRM printer to use
*/
-void drm_buddy_block_print(struct drm_buddy *mm,
- struct drm_buddy_block *block,
+void drm_buddy_block_print(struct gpu_buddy *mm,
+ struct gpu_buddy_block *block,
struct drm_printer *p)
{
- u64 start = drm_buddy_block_offset(block);
- u64 size = drm_buddy_block_size(mm, block);
+ u64 start = gpu_buddy_block_offset(block);
+ u64 size = gpu_buddy_block_size(mm, block);
drm_printf(p, "%#018llx-%#018llx: %llu\n", start, start + size, size);
}
@@ -1279,7 +38,7 @@ EXPORT_SYMBOL(drm_buddy_block_print);
* @mm: DRM buddy manager
* @p: DRM printer to use
*/
-void drm_buddy_print(struct drm_buddy *mm, struct drm_printer *p)
+void drm_buddy_print(struct gpu_buddy *mm, struct drm_printer *p)
{
int order;
@@ -1287,7 +46,7 @@ void drm_buddy_print(struct drm_buddy *m
mm->chunk_size >> 10, mm->size >> 20, mm->avail >> 20, mm->clear_avail >> 20);
for (order = mm->max_order; order >= 0; order--) {
- struct drm_buddy_block *block, *tmp;
+ struct gpu_buddy_block *block, *tmp;
struct rb_root *root;
u64 count = 0, free;
unsigned int tree;
@@ -1296,7 +55,7 @@ void drm_buddy_print(struct drm_buddy *m
root = &mm->free_trees[tree][order];
rbtree_postorder_for_each_entry_safe(block, tmp, root, rb) {
- BUG_ON(!drm_buddy_block_is_free(block));
+ BUG_ON(!gpu_buddy_block_is_free(block));
count++;
}
}
@@ -1314,22 +73,5 @@ void drm_buddy_print(struct drm_buddy *m
}
EXPORT_SYMBOL(drm_buddy_print);
-static void drm_buddy_module_exit(void)
-{
- kmem_cache_destroy(slab_blocks);
-}
-
-static int __init drm_buddy_module_init(void)
-{
- slab_blocks = KMEM_CACHE(drm_buddy_block, 0);
- if (!slab_blocks)
- return -ENOMEM;
-
- return 0;
-}
-
-module_init(drm_buddy_module_init);
-module_exit(drm_buddy_module_exit);
-
-MODULE_DESCRIPTION("DRM Buddy Allocator");
+MODULE_DESCRIPTION("DRM-specific GPU Buddy Allocator Print Helpers");
MODULE_LICENSE("Dual MIT/GPL");
--- a/drivers/gpu/drm/i915/gem/i915_gem_ttm.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_ttm.c
@@ -5,9 +5,10 @@
#include <linux/shmem_fs.h>
+#include <linux/gpu_buddy.h>
+#include <drm/drm_print.h>
#include <drm/ttm/ttm_placement.h>
#include <drm/ttm/ttm_tt.h>
-#include <drm/drm_buddy.h>
#include "i915_drv.h"
#include "i915_ttm_buddy_manager.h"
--- a/drivers/gpu/drm/i915/i915_scatterlist.c
+++ b/drivers/gpu/drm/i915/i915_scatterlist.c
@@ -7,7 +7,7 @@
#include "i915_scatterlist.h"
#include "i915_ttm_buddy_manager.h"
-#include <drm/drm_buddy.h>
+#include <linux/gpu_buddy.h>
#include <drm/drm_mm.h>
#include <linux/slab.h>
@@ -167,9 +167,9 @@ struct i915_refct_sgt *i915_rsgt_from_bu
struct i915_ttm_buddy_resource *bman_res = to_ttm_buddy_resource(res);
const u64 size = res->size;
const u32 max_segment = round_down(UINT_MAX, page_alignment);
- struct drm_buddy *mm = bman_res->mm;
+ struct gpu_buddy *mm = bman_res->mm;
struct list_head *blocks = &bman_res->blocks;
- struct drm_buddy_block *block;
+ struct gpu_buddy_block *block;
struct i915_refct_sgt *rsgt;
struct scatterlist *sg;
struct sg_table *st;
@@ -202,8 +202,8 @@ struct i915_refct_sgt *i915_rsgt_from_bu
list_for_each_entry(block, blocks, link) {
u64 block_size, offset;
- block_size = min_t(u64, size, drm_buddy_block_size(mm, block));
- offset = drm_buddy_block_offset(block);
+ block_size = min_t(u64, size, gpu_buddy_block_size(mm, block));
+ offset = gpu_buddy_block_offset(block);
while (block_size) {
u64 len;
--- a/drivers/gpu/drm/i915/i915_ttm_buddy_manager.c
+++ b/drivers/gpu/drm/i915/i915_ttm_buddy_manager.c
@@ -5,18 +5,19 @@
#include <linux/slab.h>
+#include <linux/gpu_buddy.h>
+#include <drm/drm_buddy.h>
+#include <drm/drm_print.h>
#include <drm/ttm/ttm_placement.h>
#include <drm/ttm/ttm_bo.h>
-#include <drm/drm_buddy.h>
-
#include "i915_ttm_buddy_manager.h"
#include "i915_gem.h"
struct i915_ttm_buddy_manager {
struct ttm_resource_manager manager;
- struct drm_buddy mm;
+ struct gpu_buddy mm;
struct list_head reserved;
struct mutex lock;
unsigned long visible_size;
@@ -38,7 +39,7 @@ static int i915_ttm_buddy_man_alloc(stru
{
struct i915_ttm_buddy_manager *bman = to_buddy_manager(man);
struct i915_ttm_buddy_resource *bman_res;
- struct drm_buddy *mm = &bman->mm;
+ struct gpu_buddy *mm = &bman->mm;
unsigned long n_pages, lpfn;
u64 min_page_size;
u64 size;
@@ -57,13 +58,13 @@ static int i915_ttm_buddy_man_alloc(stru
bman_res->mm = mm;
if (place->flags & TTM_PL_FLAG_TOPDOWN)
- bman_res->flags |= DRM_BUDDY_TOPDOWN_ALLOCATION;
+ bman_res->flags |= GPU_BUDDY_TOPDOWN_ALLOCATION;
if (place->flags & TTM_PL_FLAG_CONTIGUOUS)
- bman_res->flags |= DRM_BUDDY_CONTIGUOUS_ALLOCATION;
+ bman_res->flags |= GPU_BUDDY_CONTIGUOUS_ALLOCATION;
if (place->fpfn || lpfn != man->size)
- bman_res->flags |= DRM_BUDDY_RANGE_ALLOCATION;
+ bman_res->flags |= GPU_BUDDY_RANGE_ALLOCATION;
GEM_BUG_ON(!bman_res->base.size);
size = bman_res->base.size;
@@ -89,7 +90,7 @@ static int i915_ttm_buddy_man_alloc(stru
goto err_free_res;
}
- err = drm_buddy_alloc_blocks(mm, (u64)place->fpfn << PAGE_SHIFT,
+ err = gpu_buddy_alloc_blocks(mm, (u64)place->fpfn << PAGE_SHIFT,
(u64)lpfn << PAGE_SHIFT,
(u64)n_pages << PAGE_SHIFT,
min_page_size,
@@ -101,15 +102,15 @@ static int i915_ttm_buddy_man_alloc(stru
if (lpfn <= bman->visible_size) {
bman_res->used_visible_size = PFN_UP(bman_res->base.size);
} else {
- struct drm_buddy_block *block;
+ struct gpu_buddy_block *block;
list_for_each_entry(block, &bman_res->blocks, link) {
unsigned long start =
- drm_buddy_block_offset(block) >> PAGE_SHIFT;
+ gpu_buddy_block_offset(block) >> PAGE_SHIFT;
if (start < bman->visible_size) {
unsigned long end = start +
- (drm_buddy_block_size(mm, block) >> PAGE_SHIFT);
+ (gpu_buddy_block_size(mm, block) >> PAGE_SHIFT);
bman_res->used_visible_size +=
min(end, bman->visible_size) - start;
@@ -126,7 +127,7 @@ static int i915_ttm_buddy_man_alloc(stru
return 0;
err_free_blocks:
- drm_buddy_free_list(mm, &bman_res->blocks, 0);
+ gpu_buddy_free_list(mm, &bman_res->blocks, 0);
mutex_unlock(&bman->lock);
err_free_res:
ttm_resource_fini(man, &bman_res->base);
@@ -141,7 +142,7 @@ static void i915_ttm_buddy_man_free(stru
struct i915_ttm_buddy_manager *bman = to_buddy_manager(man);
mutex_lock(&bman->lock);
- drm_buddy_free_list(&bman->mm, &bman_res->blocks, 0);
+ gpu_buddy_free_list(&bman->mm, &bman_res->blocks, 0);
bman->visible_avail += bman_res->used_visible_size;
mutex_unlock(&bman->lock);
@@ -156,8 +157,8 @@ static bool i915_ttm_buddy_man_intersect
{
struct i915_ttm_buddy_resource *bman_res = to_ttm_buddy_resource(res);
struct i915_ttm_buddy_manager *bman = to_buddy_manager(man);
- struct drm_buddy *mm = &bman->mm;
- struct drm_buddy_block *block;
+ struct gpu_buddy *mm = &bman->mm;
+ struct gpu_buddy_block *block;
if (!place->fpfn && !place->lpfn)
return true;
@@ -176,9 +177,9 @@ static bool i915_ttm_buddy_man_intersect
/* Check each drm buddy block individually */
list_for_each_entry(block, &bman_res->blocks, link) {
unsigned long fpfn =
- drm_buddy_block_offset(block) >> PAGE_SHIFT;
+ gpu_buddy_block_offset(block) >> PAGE_SHIFT;
unsigned long lpfn = fpfn +
- (drm_buddy_block_size(mm, block) >> PAGE_SHIFT);
+ (gpu_buddy_block_size(mm, block) >> PAGE_SHIFT);
if (place->fpfn < lpfn && place->lpfn > fpfn)
return true;
@@ -194,8 +195,8 @@ static bool i915_ttm_buddy_man_compatibl
{
struct i915_ttm_buddy_resource *bman_res = to_ttm_buddy_resource(res);
struct i915_ttm_buddy_manager *bman = to_buddy_manager(man);
- struct drm_buddy *mm = &bman->mm;
- struct drm_buddy_block *block;
+ struct gpu_buddy *mm = &bman->mm;
+ struct gpu_buddy_block *block;
if (!place->fpfn && !place->lpfn)
return true;
@@ -209,9 +210,9 @@ static bool i915_ttm_buddy_man_compatibl
/* Check each drm buddy block individually */
list_for_each_entry(block, &bman_res->blocks, link) {
unsigned long fpfn =
- drm_buddy_block_offset(block) >> PAGE_SHIFT;
+ gpu_buddy_block_offset(block) >> PAGE_SHIFT;
unsigned long lpfn = fpfn +
- (drm_buddy_block_size(mm, block) >> PAGE_SHIFT);
+ (gpu_buddy_block_size(mm, block) >> PAGE_SHIFT);
if (fpfn < place->fpfn || lpfn > place->lpfn)
return false;
@@ -224,7 +225,7 @@ static void i915_ttm_buddy_man_debug(str
struct drm_printer *printer)
{
struct i915_ttm_buddy_manager *bman = to_buddy_manager(man);
- struct drm_buddy_block *block;
+ struct gpu_buddy_block *block;
mutex_lock(&bman->lock);
drm_printf(printer, "default_page_size: %lluKiB\n",
@@ -293,7 +294,7 @@ int i915_ttm_buddy_man_init(struct ttm_d
if (!bman)
return -ENOMEM;
- err = drm_buddy_init(&bman->mm, size, chunk_size);
+ err = gpu_buddy_init(&bman->mm, size, chunk_size);
if (err)
goto err_free_bman;
@@ -333,7 +334,7 @@ int i915_ttm_buddy_man_fini(struct ttm_d
{
struct ttm_resource_manager *man = ttm_manager_type(bdev, type);
struct i915_ttm_buddy_manager *bman = to_buddy_manager(man);
- struct drm_buddy *mm = &bman->mm;
+ struct gpu_buddy *mm = &bman->mm;
int ret;
ttm_resource_manager_set_used(man, false);
@@ -345,8 +346,8 @@ int i915_ttm_buddy_man_fini(struct ttm_d
ttm_set_driver_manager(bdev, type, NULL);
mutex_lock(&bman->lock);
- drm_buddy_free_list(mm, &bman->reserved, 0);
- drm_buddy_fini(mm);
+ gpu_buddy_free_list(mm, &bman->reserved, 0);
+ gpu_buddy_fini(mm);
bman->visible_avail += bman->visible_reserved;
WARN_ON_ONCE(bman->visible_avail != bman->visible_size);
mutex_unlock(&bman->lock);
@@ -371,15 +372,15 @@ int i915_ttm_buddy_man_reserve(struct tt
u64 start, u64 size)
{
struct i915_ttm_buddy_manager *bman = to_buddy_manager(man);
- struct drm_buddy *mm = &bman->mm;
+ struct gpu_buddy *mm = &bman->mm;
unsigned long fpfn = start >> PAGE_SHIFT;
unsigned long flags = 0;
int ret;
- flags |= DRM_BUDDY_RANGE_ALLOCATION;
+ flags |= GPU_BUDDY_RANGE_ALLOCATION;
mutex_lock(&bman->lock);
- ret = drm_buddy_alloc_blocks(mm, start,
+ ret = gpu_buddy_alloc_blocks(mm, start,
start + size,
size, mm->chunk_size,
&bman->reserved,
--- a/drivers/gpu/drm/i915/i915_ttm_buddy_manager.h
+++ b/drivers/gpu/drm/i915/i915_ttm_buddy_manager.h
@@ -13,7 +13,7 @@
struct ttm_device;
struct ttm_resource_manager;
-struct drm_buddy;
+struct gpu_buddy;
/**
* struct i915_ttm_buddy_resource
@@ -33,7 +33,7 @@ struct i915_ttm_buddy_resource {
struct list_head blocks;
unsigned long flags;
unsigned long used_visible_size;
- struct drm_buddy *mm;
+ struct gpu_buddy *mm;
};
/**
--- a/drivers/gpu/drm/i915/selftests/intel_memory_region.c
+++ b/drivers/gpu/drm/i915/selftests/intel_memory_region.c
@@ -6,7 +6,7 @@
#include <linux/prime_numbers.h>
#include <linux/sort.h>
-#include <drm/drm_buddy.h>
+#include <linux/gpu_buddy.h>
#include "../i915_selftest.h"
@@ -371,7 +371,7 @@ static int igt_mock_splintered_region(vo
struct drm_i915_private *i915 = mem->i915;
struct i915_ttm_buddy_resource *res;
struct drm_i915_gem_object *obj;
- struct drm_buddy *mm;
+ struct gpu_buddy *mm;
unsigned int expected_order;
LIST_HEAD(objects);
u64 size;
@@ -447,8 +447,8 @@ static int igt_mock_max_segment(void *ar
struct drm_i915_private *i915 = mem->i915;
struct i915_ttm_buddy_resource *res;
struct drm_i915_gem_object *obj;
- struct drm_buddy_block *block;
- struct drm_buddy *mm;
+ struct gpu_buddy_block *block;
+ struct gpu_buddy *mm;
struct list_head *blocks;
struct scatterlist *sg;
I915_RND_STATE(prng);
@@ -487,8 +487,8 @@ static int igt_mock_max_segment(void *ar
mm = res->mm;
size = 0;
list_for_each_entry(block, blocks, link) {
- if (drm_buddy_block_size(mm, block) > size)
- size = drm_buddy_block_size(mm, block);
+ if (gpu_buddy_block_size(mm, block) > size)
+ size = gpu_buddy_block_size(mm, block);
}
if (size < max_segment) {
pr_err("%s: Failed to create a huge contiguous block [> %u], largest block %lld\n",
@@ -527,14 +527,14 @@ static u64 igt_object_mappable_total(str
struct intel_memory_region *mr = obj->mm.region;
struct i915_ttm_buddy_resource *bman_res =
to_ttm_buddy_resource(obj->mm.res);
- struct drm_buddy *mm = bman_res->mm;
- struct drm_buddy_block *block;
+ struct gpu_buddy *mm = bman_res->mm;
+ struct gpu_buddy_block *block;
u64 total;
total = 0;
list_for_each_entry(block, &bman_res->blocks, link) {
- u64 start = drm_buddy_block_offset(block);
- u64 end = start + drm_buddy_block_size(mm, block);
+ u64 start = gpu_buddy_block_offset(block);
+ u64 end = start + gpu_buddy_block_size(mm, block);
if (start < resource_size(&mr->io))
total += min_t(u64, end, resource_size(&mr->io)) - start;
--- a/drivers/gpu/drm/lib/drm_random.c
+++ /dev/null
@@ -1,44 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-#include <linux/bitops.h>
-#include <linux/export.h>
-#include <linux/kernel.h>
-#include <linux/random.h>
-#include <linux/slab.h>
-#include <linux/types.h>
-
-#include "drm_random.h"
-
-u32 drm_prandom_u32_max_state(u32 ep_ro, struct rnd_state *state)
-{
- return upper_32_bits((u64)prandom_u32_state(state) * ep_ro);
-}
-EXPORT_SYMBOL(drm_prandom_u32_max_state);
-
-void drm_random_reorder(unsigned int *order, unsigned int count,
- struct rnd_state *state)
-{
- unsigned int i, j;
-
- for (i = 0; i < count; ++i) {
- BUILD_BUG_ON(sizeof(unsigned int) > sizeof(u32));
- j = drm_prandom_u32_max_state(count, state);
- swap(order[i], order[j]);
- }
-}
-EXPORT_SYMBOL(drm_random_reorder);
-
-unsigned int *drm_random_order(unsigned int count, struct rnd_state *state)
-{
- unsigned int *order, i;
-
- order = kmalloc_array(count, sizeof(*order), GFP_KERNEL);
- if (!order)
- return order;
-
- for (i = 0; i < count; i++)
- order[i] = i;
-
- drm_random_reorder(order, count, state);
- return order;
-}
-EXPORT_SYMBOL(drm_random_order);
--- a/drivers/gpu/drm/lib/drm_random.h
+++ /dev/null
@@ -1,28 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef __DRM_RANDOM_H__
-#define __DRM_RANDOM_H__
-
-/* This is a temporary home for a couple of utility functions that should
- * be transposed to lib/ at the earliest convenience.
- */
-
-#include <linux/prandom.h>
-
-#define DRM_RND_STATE_INITIALIZER(seed__) ({ \
- struct rnd_state state__; \
- prandom_seed_state(&state__, (seed__)); \
- state__; \
-})
-
-#define DRM_RND_STATE(name__, seed__) \
- struct rnd_state name__ = DRM_RND_STATE_INITIALIZER(seed__)
-
-unsigned int *drm_random_order(unsigned int count,
- struct rnd_state *state);
-void drm_random_reorder(unsigned int *order,
- unsigned int count,
- struct rnd_state *state);
-u32 drm_prandom_u32_max_state(u32 ep_ro,
- struct rnd_state *state);
-
-#endif /* !__DRM_RANDOM_H__ */
--- a/drivers/gpu/drm/tests/Makefile
+++ b/drivers/gpu/drm/tests/Makefile
@@ -7,7 +7,6 @@ obj-$(CONFIG_DRM_KUNIT_TEST) += \
drm_atomic_test.o \
drm_atomic_state_test.o \
drm_bridge_test.o \
- drm_buddy_test.o \
drm_cmdline_parser_test.o \
drm_connector_test.o \
drm_damage_helper_test.o \
--- a/drivers/gpu/drm/tests/drm_buddy_test.c
+++ /dev/null
@@ -1,788 +0,0 @@
-// SPDX-License-Identifier: MIT
-/*
- * Copyright © 2019 Intel Corporation
- * Copyright © 2022 Maíra Canal <mairacanal@riseup.net>
- */
-
-#include <kunit/test.h>
-
-#include <linux/prime_numbers.h>
-#include <linux/sched/signal.h>
-#include <linux/sizes.h>
-
-#include <drm/drm_buddy.h>
-
-#include "../lib/drm_random.h"
-
-static unsigned int random_seed;
-
-static inline u64 get_size(int order, u64 chunk_size)
-{
- return (1 << order) * chunk_size;
-}
-
-static void drm_test_buddy_alloc_range_bias(struct kunit *test)
-{
- u32 mm_size, size, ps, bias_size, bias_start, bias_end, bias_rem;
- DRM_RND_STATE(prng, random_seed);
- unsigned int i, count, *order;
- struct drm_buddy_block *block;
- unsigned long flags;
- struct drm_buddy mm;
- LIST_HEAD(allocated);
-
- bias_size = SZ_1M;
- ps = roundup_pow_of_two(prandom_u32_state(&prng) % bias_size);
- ps = max(SZ_4K, ps);
- mm_size = (SZ_8M-1) & ~(ps-1); /* Multiple roots */
-
- kunit_info(test, "mm_size=%u, ps=%u\n", mm_size, ps);
-
- KUNIT_ASSERT_FALSE_MSG(test, drm_buddy_init(&mm, mm_size, ps),
- "buddy_init failed\n");
-
- count = mm_size / bias_size;
- order = drm_random_order(count, &prng);
- KUNIT_EXPECT_TRUE(test, order);
-
- /*
- * Idea is to split the address space into uniform bias ranges, and then
- * in some random order allocate within each bias, using various
- * patterns within. This should detect if allocations leak out from a
- * given bias, for example.
- */
-
- for (i = 0; i < count; i++) {
- LIST_HEAD(tmp);
- u32 size;
-
- bias_start = order[i] * bias_size;
- bias_end = bias_start + bias_size;
- bias_rem = bias_size;
-
- /* internal round_up too big */
- KUNIT_ASSERT_TRUE_MSG(test,
- drm_buddy_alloc_blocks(&mm, bias_start,
- bias_end, bias_size + ps, bias_size,
- &allocated,
- DRM_BUDDY_RANGE_ALLOCATION),
- "buddy_alloc failed with bias(%x-%x), size=%u, ps=%u\n",
- bias_start, bias_end, bias_size, bias_size);
-
- /* size too big */
- KUNIT_ASSERT_TRUE_MSG(test,
- drm_buddy_alloc_blocks(&mm, bias_start,
- bias_end, bias_size + ps, ps,
- &allocated,
- DRM_BUDDY_RANGE_ALLOCATION),
- "buddy_alloc didn't fail with bias(%x-%x), size=%u, ps=%u\n",
- bias_start, bias_end, bias_size + ps, ps);
-
- /* bias range too small for size */
- KUNIT_ASSERT_TRUE_MSG(test,
- drm_buddy_alloc_blocks(&mm, bias_start + ps,
- bias_end, bias_size, ps,
- &allocated,
- DRM_BUDDY_RANGE_ALLOCATION),
- "buddy_alloc didn't fail with bias(%x-%x), size=%u, ps=%u\n",
- bias_start + ps, bias_end, bias_size, ps);
-
- /* bias misaligned */
- KUNIT_ASSERT_TRUE_MSG(test,
- drm_buddy_alloc_blocks(&mm, bias_start + ps,
- bias_end - ps,
- bias_size >> 1, bias_size >> 1,
- &allocated,
- DRM_BUDDY_RANGE_ALLOCATION),
- "buddy_alloc h didn't fail with bias(%x-%x), size=%u, ps=%u\n",
- bias_start + ps, bias_end - ps, bias_size >> 1, bias_size >> 1);
-
- /* single big page */
- KUNIT_ASSERT_FALSE_MSG(test,
- drm_buddy_alloc_blocks(&mm, bias_start,
- bias_end, bias_size, bias_size,
- &tmp,
- DRM_BUDDY_RANGE_ALLOCATION),
- "buddy_alloc i failed with bias(%x-%x), size=%u, ps=%u\n",
- bias_start, bias_end, bias_size, bias_size);
- drm_buddy_free_list(&mm, &tmp, 0);
-
- /* single page with internal round_up */
- KUNIT_ASSERT_FALSE_MSG(test,
- drm_buddy_alloc_blocks(&mm, bias_start,
- bias_end, ps, bias_size,
- &tmp,
- DRM_BUDDY_RANGE_ALLOCATION),
- "buddy_alloc failed with bias(%x-%x), size=%u, ps=%u\n",
- bias_start, bias_end, ps, bias_size);
- drm_buddy_free_list(&mm, &tmp, 0);
-
- /* random size within */
- size = max(round_up(prandom_u32_state(&prng) % bias_rem, ps), ps);
- if (size)
- KUNIT_ASSERT_FALSE_MSG(test,
- drm_buddy_alloc_blocks(&mm, bias_start,
- bias_end, size, ps,
- &tmp,
- DRM_BUDDY_RANGE_ALLOCATION),
- "buddy_alloc failed with bias(%x-%x), size=%u, ps=%u\n",
- bias_start, bias_end, size, ps);
-
- bias_rem -= size;
- /* too big for current avail */
- KUNIT_ASSERT_TRUE_MSG(test,
- drm_buddy_alloc_blocks(&mm, bias_start,
- bias_end, bias_rem + ps, ps,
- &allocated,
- DRM_BUDDY_RANGE_ALLOCATION),
- "buddy_alloc didn't fail with bias(%x-%x), size=%u, ps=%u\n",
- bias_start, bias_end, bias_rem + ps, ps);
-
- if (bias_rem) {
- /* random fill of the remainder */
- size = max(round_up(prandom_u32_state(&prng) % bias_rem, ps), ps);
- size = max(size, ps);
-
- KUNIT_ASSERT_FALSE_MSG(test,
- drm_buddy_alloc_blocks(&mm, bias_start,
- bias_end, size, ps,
- &allocated,
- DRM_BUDDY_RANGE_ALLOCATION),
- "buddy_alloc failed with bias(%x-%x), size=%u, ps=%u\n",
- bias_start, bias_end, size, ps);
- /*
- * Intentionally allow some space to be left
- * unallocated, and ideally not always on the bias
- * boundaries.
- */
- drm_buddy_free_list(&mm, &tmp, 0);
- } else {
- list_splice_tail(&tmp, &allocated);
- }
- }
-
- kfree(order);
- drm_buddy_free_list(&mm, &allocated, 0);
- drm_buddy_fini(&mm);
-
- /*
- * Something more free-form. Idea is to pick a random starting bias
- * range within the address space and then start filling it up. Also
- * randomly grow the bias range in both directions as we go along. This
- * should give us bias start/end which is not always uniform like above,
- * and in some cases will require the allocator to jump over already
- * allocated nodes in the middle of the address space.
- */
-
- KUNIT_ASSERT_FALSE_MSG(test, drm_buddy_init(&mm, mm_size, ps),
- "buddy_init failed\n");
-
- bias_start = round_up(prandom_u32_state(&prng) % (mm_size - ps), ps);
- bias_end = round_up(bias_start + prandom_u32_state(&prng) % (mm_size - bias_start), ps);
- bias_end = max(bias_end, bias_start + ps);
- bias_rem = bias_end - bias_start;
-
- do {
- u32 size = max(round_up(prandom_u32_state(&prng) % bias_rem, ps), ps);
-
- KUNIT_ASSERT_FALSE_MSG(test,
- drm_buddy_alloc_blocks(&mm, bias_start,
- bias_end, size, ps,
- &allocated,
- DRM_BUDDY_RANGE_ALLOCATION),
- "buddy_alloc failed with bias(%x-%x), size=%u, ps=%u\n",
- bias_start, bias_end, size, ps);
- bias_rem -= size;
-
- /*
- * Try to randomly grow the bias range in both directions, or
- * only one, or perhaps don't grow at all.
- */
- do {
- u32 old_bias_start = bias_start;
- u32 old_bias_end = bias_end;
-
- if (bias_start)
- bias_start -= round_up(prandom_u32_state(&prng) % bias_start, ps);
- if (bias_end != mm_size)
- bias_end += round_up(prandom_u32_state(&prng) % (mm_size - bias_end), ps);
-
- bias_rem += old_bias_start - bias_start;
- bias_rem += bias_end - old_bias_end;
- } while (!bias_rem && (bias_start || bias_end != mm_size));
- } while (bias_rem);
-
- KUNIT_ASSERT_EQ(test, bias_start, 0);
- KUNIT_ASSERT_EQ(test, bias_end, mm_size);
- KUNIT_ASSERT_TRUE_MSG(test,
- drm_buddy_alloc_blocks(&mm, bias_start, bias_end,
- ps, ps,
- &allocated,
- DRM_BUDDY_RANGE_ALLOCATION),
- "buddy_alloc passed with bias(%x-%x), size=%u\n",
- bias_start, bias_end, ps);
-
- drm_buddy_free_list(&mm, &allocated, 0);
- drm_buddy_fini(&mm);
-
- /*
- * Allocate cleared blocks in the bias range when the DRM buddy's clear avail is
- * zero. This will validate the bias range allocation in scenarios like system boot
- * when no cleared blocks are available and exercise the fallback path too. The resulting
- * blocks should always be dirty.
- */
-
- KUNIT_ASSERT_FALSE_MSG(test, drm_buddy_init(&mm, mm_size, ps),
- "buddy_init failed\n");
-
- bias_start = round_up(prandom_u32_state(&prng) % (mm_size - ps), ps);
- bias_end = round_up(bias_start + prandom_u32_state(&prng) % (mm_size - bias_start), ps);
- bias_end = max(bias_end, bias_start + ps);
- bias_rem = bias_end - bias_start;
-
- flags = DRM_BUDDY_CLEAR_ALLOCATION | DRM_BUDDY_RANGE_ALLOCATION;
- size = max(round_up(prandom_u32_state(&prng) % bias_rem, ps), ps);
-
- KUNIT_ASSERT_FALSE_MSG(test,
- drm_buddy_alloc_blocks(&mm, bias_start,
- bias_end, size, ps,
- &allocated,
- flags),
- "buddy_alloc failed with bias(%x-%x), size=%u, ps=%u\n",
- bias_start, bias_end, size, ps);
-
- list_for_each_entry(block, &allocated, link)
- KUNIT_EXPECT_EQ(test, drm_buddy_block_is_clear(block), false);
-
- drm_buddy_free_list(&mm, &allocated, 0);
- drm_buddy_fini(&mm);
-}
-
-static void drm_test_buddy_alloc_clear(struct kunit *test)
-{
- unsigned long n_pages, total, i = 0;
- const unsigned long ps = SZ_4K;
- struct drm_buddy_block *block;
- const int max_order = 12;
- LIST_HEAD(allocated);
- struct drm_buddy mm;
- unsigned int order;
- u32 mm_size, size;
- LIST_HEAD(dirty);
- LIST_HEAD(clean);
-
- mm_size = SZ_4K << max_order;
- KUNIT_EXPECT_FALSE(test, drm_buddy_init(&mm, mm_size, ps));
-
- KUNIT_EXPECT_EQ(test, mm.max_order, max_order);
-
- /*
- * Idea is to allocate and free some random portion of the address space,
- * returning those pages as non-dirty and randomly alternate between
- * requesting dirty and non-dirty pages (not going over the limit
- * we freed as non-dirty), putting that into two separate lists.
- * Loop over both lists at the end checking that the dirty list
- * is indeed all dirty pages and vice versa. Free it all again,
- * keeping the dirty/clear status.
- */
- KUNIT_ASSERT_FALSE_MSG(test, drm_buddy_alloc_blocks(&mm, 0, mm_size,
- 5 * ps, ps, &allocated,
- DRM_BUDDY_TOPDOWN_ALLOCATION),
- "buddy_alloc hit an error size=%lu\n", 5 * ps);
- drm_buddy_free_list(&mm, &allocated, DRM_BUDDY_CLEARED);
-
- n_pages = 10;
- do {
- unsigned long flags;
- struct list_head *list;
- int slot = i % 2;
-
- if (slot == 0) {
- list = &dirty;
- flags = 0;
- } else {
- list = &clean;
- flags = DRM_BUDDY_CLEAR_ALLOCATION;
- }
-
- KUNIT_ASSERT_FALSE_MSG(test, drm_buddy_alloc_blocks(&mm, 0, mm_size,
- ps, ps, list,
- flags),
- "buddy_alloc hit an error size=%lu\n", ps);
- } while (++i < n_pages);
-
- list_for_each_entry(block, &clean, link)
- KUNIT_EXPECT_EQ(test, drm_buddy_block_is_clear(block), true);
-
- list_for_each_entry(block, &dirty, link)
- KUNIT_EXPECT_EQ(test, drm_buddy_block_is_clear(block), false);
-
- drm_buddy_free_list(&mm, &clean, DRM_BUDDY_CLEARED);
-
- /*
- * Trying to go over the clear limit for some allocation.
- * The allocation should never fail with reasonable page-size.
- */
- KUNIT_ASSERT_FALSE_MSG(test, drm_buddy_alloc_blocks(&mm, 0, mm_size,
- 10 * ps, ps, &clean,
- DRM_BUDDY_CLEAR_ALLOCATION),
- "buddy_alloc hit an error size=%lu\n", 10 * ps);
-
- drm_buddy_free_list(&mm, &clean, DRM_BUDDY_CLEARED);
- drm_buddy_free_list(&mm, &dirty, 0);
- drm_buddy_fini(&mm);
-
- KUNIT_EXPECT_FALSE(test, drm_buddy_init(&mm, mm_size, ps));
-
- /*
- * Create a new mm. Intentionally fragment the address space by creating
- * two alternating lists. Free both lists, one as dirty the other as clean.
- * Try to allocate double the previous size with matching min_page_size. The
- * allocation should never fail as it calls the force_merge. Also check that
- * the page is always dirty after force_merge. Free the page as dirty, then
- * repeat the whole thing, increment the order until we hit the max_order.
- */
-
- i = 0;
- n_pages = mm_size / ps;
- do {
- struct list_head *list;
- int slot = i % 2;
-
- if (slot == 0)
- list = &dirty;
- else
- list = &clean;
-
- KUNIT_ASSERT_FALSE_MSG(test, drm_buddy_alloc_blocks(&mm, 0, mm_size,
- ps, ps, list, 0),
- "buddy_alloc hit an error size=%lu\n", ps);
- } while (++i < n_pages);
-
- drm_buddy_free_list(&mm, &clean, DRM_BUDDY_CLEARED);
- drm_buddy_free_list(&mm, &dirty, 0);
-
- order = 1;
- do {
- size = SZ_4K << order;
-
- KUNIT_ASSERT_FALSE_MSG(test, drm_buddy_alloc_blocks(&mm, 0, mm_size,
- size, size, &allocated,
- DRM_BUDDY_CLEAR_ALLOCATION),
- "buddy_alloc hit an error size=%u\n", size);
- total = 0;
- list_for_each_entry(block, &allocated, link) {
- if (size != mm_size)
- KUNIT_EXPECT_EQ(test, drm_buddy_block_is_clear(block), false);
- total += drm_buddy_block_size(&mm, block);
- }
- KUNIT_EXPECT_EQ(test, total, size);
-
- drm_buddy_free_list(&mm, &allocated, 0);
- } while (++order <= max_order);
-
- drm_buddy_fini(&mm);
-
- /*
- * Create a new mm with a non power-of-two size. Allocate a random size from each
- * root, free as cleared and then call fini. This will ensure the multi-root
- * force merge during fini.
- */
- mm_size = (SZ_4K << max_order) + (SZ_4K << (max_order - 2));
-
- KUNIT_EXPECT_FALSE(test, drm_buddy_init(&mm, mm_size, ps));
- KUNIT_EXPECT_EQ(test, mm.max_order, max_order);
- KUNIT_ASSERT_FALSE_MSG(test, drm_buddy_alloc_blocks(&mm, 0, SZ_4K << max_order,
- 4 * ps, ps, &allocated,
- DRM_BUDDY_RANGE_ALLOCATION),
- "buddy_alloc hit an error size=%lu\n", 4 * ps);
- drm_buddy_free_list(&mm, &allocated, DRM_BUDDY_CLEARED);
- KUNIT_ASSERT_FALSE_MSG(test, drm_buddy_alloc_blocks(&mm, 0, SZ_4K << max_order,
- 2 * ps, ps, &allocated,
- DRM_BUDDY_CLEAR_ALLOCATION),
- "buddy_alloc hit an error size=%lu\n", 2 * ps);
- drm_buddy_free_list(&mm, &allocated, DRM_BUDDY_CLEARED);
- KUNIT_ASSERT_FALSE_MSG(test, drm_buddy_alloc_blocks(&mm, SZ_4K << max_order, mm_size,
- ps, ps, &allocated,
- DRM_BUDDY_RANGE_ALLOCATION),
- "buddy_alloc hit an error size=%lu\n", ps);
- drm_buddy_free_list(&mm, &allocated, DRM_BUDDY_CLEARED);
- drm_buddy_fini(&mm);
-}
-
-static void drm_test_buddy_alloc_contiguous(struct kunit *test)
-{
- const unsigned long ps = SZ_4K, mm_size = 16 * 3 * SZ_4K;
- unsigned long i, n_pages, total;
- struct drm_buddy_block *block;
- struct drm_buddy mm;
- LIST_HEAD(left);
- LIST_HEAD(middle);
- LIST_HEAD(right);
- LIST_HEAD(allocated);
-
- KUNIT_EXPECT_FALSE(test, drm_buddy_init(&mm, mm_size, ps));
-
- /*
- * Idea is to fragment the address space by alternating block
- * allocations between three different lists; one for left, middle and
- * right. We can then free a list to simulate fragmentation. In
- * particular we want to exercise the DRM_BUDDY_CONTIGUOUS_ALLOCATION,
- * including the try_harder path.
- */
-
- i = 0;
- n_pages = mm_size / ps;
- do {
- struct list_head *list;
- int slot = i % 3;
-
- if (slot == 0)
- list = &left;
- else if (slot == 1)
- list = &middle;
- else
- list = &right;
- KUNIT_ASSERT_FALSE_MSG(test,
- drm_buddy_alloc_blocks(&mm, 0, mm_size,
- ps, ps, list, 0),
- "buddy_alloc hit an error size=%lu\n",
- ps);
- } while (++i < n_pages);
-
- KUNIT_ASSERT_TRUE_MSG(test, drm_buddy_alloc_blocks(&mm, 0, mm_size,
- 3 * ps, ps, &allocated,
- DRM_BUDDY_CONTIGUOUS_ALLOCATION),
- "buddy_alloc didn't error size=%lu\n", 3 * ps);
-
- drm_buddy_free_list(&mm, &middle, 0);
- KUNIT_ASSERT_TRUE_MSG(test, drm_buddy_alloc_blocks(&mm, 0, mm_size,
- 3 * ps, ps, &allocated,
- DRM_BUDDY_CONTIGUOUS_ALLOCATION),
- "buddy_alloc didn't error size=%lu\n", 3 * ps);
- KUNIT_ASSERT_TRUE_MSG(test, drm_buddy_alloc_blocks(&mm, 0, mm_size,
- 2 * ps, ps, &allocated,
- DRM_BUDDY_CONTIGUOUS_ALLOCATION),
- "buddy_alloc didn't error size=%lu\n", 2 * ps);
-
- drm_buddy_free_list(&mm, &right, 0);
- KUNIT_ASSERT_TRUE_MSG(test, drm_buddy_alloc_blocks(&mm, 0, mm_size,
- 3 * ps, ps, &allocated,
- DRM_BUDDY_CONTIGUOUS_ALLOCATION),
- "buddy_alloc didn't error size=%lu\n", 3 * ps);
- /*
- * At this point we should have enough contiguous space for 2 blocks,
- * however they are never buddies (since we freed middle and right) so
- * will require the try_harder logic to find them.
- */
- KUNIT_ASSERT_FALSE_MSG(test, drm_buddy_alloc_blocks(&mm, 0, mm_size,
- 2 * ps, ps, &allocated,
- DRM_BUDDY_CONTIGUOUS_ALLOCATION),
- "buddy_alloc hit an error size=%lu\n", 2 * ps);
-
- drm_buddy_free_list(&mm, &left, 0);
- KUNIT_ASSERT_FALSE_MSG(test, drm_buddy_alloc_blocks(&mm, 0, mm_size,
- 3 * ps, ps, &allocated,
- DRM_BUDDY_CONTIGUOUS_ALLOCATION),
- "buddy_alloc hit an error size=%lu\n", 3 * ps);
-
- total = 0;
- list_for_each_entry(block, &allocated, link)
- total += drm_buddy_block_size(&mm, block);
-
- KUNIT_ASSERT_EQ(test, total, ps * 2 + ps * 3);
-
- drm_buddy_free_list(&mm, &allocated, 0);
- drm_buddy_fini(&mm);
-}
-
-static void drm_test_buddy_alloc_pathological(struct kunit *test)
-{
- u64 mm_size, size, start = 0;
- struct drm_buddy_block *block;
- const int max_order = 3;
- unsigned long flags = 0;
- int order, top;
- struct drm_buddy mm;
- LIST_HEAD(blocks);
- LIST_HEAD(holes);
- LIST_HEAD(tmp);
-
- /*
- * Create a pot-sized mm, then allocate one of each possible
- * order within. This should leave the mm with exactly one
- * page left. Free the largest block, then whittle down again.
- * Eventually we will have a fully 50% fragmented mm.
- */
-
- mm_size = SZ_4K << max_order;
- KUNIT_ASSERT_FALSE_MSG(test, drm_buddy_init(&mm, mm_size, SZ_4K),
- "buddy_init failed\n");
-
- KUNIT_EXPECT_EQ(test, mm.max_order, max_order);
-
- for (top = max_order; top; top--) {
- /* Make room by freeing the largest allocated block */
- block = list_first_entry_or_null(&blocks, typeof(*block), link);
- if (block) {
- list_del(&block->link);
- drm_buddy_free_block(&mm, block);
- }
-
- for (order = top; order--;) {
- size = get_size(order, mm.chunk_size);
- KUNIT_ASSERT_FALSE_MSG(test, drm_buddy_alloc_blocks(&mm, start,
- mm_size, size, size,
- &tmp, flags),
- "buddy_alloc hit -ENOMEM with order=%d, top=%d\n",
- order, top);
-
- block = list_first_entry_or_null(&tmp, struct drm_buddy_block, link);
- KUNIT_ASSERT_TRUE_MSG(test, block, "alloc_blocks has no blocks\n");
-
- list_move_tail(&block->link, &blocks);
- }
-
- /* There should be one final page for this sub-allocation */
- size = get_size(0, mm.chunk_size);
- KUNIT_ASSERT_FALSE_MSG(test, drm_buddy_alloc_blocks(&mm, start, mm_size,
- size, size, &tmp, flags),
- "buddy_alloc hit -ENOMEM for hole\n");
-
- block = list_first_entry_or_null(&tmp, struct drm_buddy_block, link);
- KUNIT_ASSERT_TRUE_MSG(test, block, "alloc_blocks has no blocks\n");
-
- list_move_tail(&block->link, &holes);
-
- size = get_size(top, mm.chunk_size);
- KUNIT_ASSERT_TRUE_MSG(test, drm_buddy_alloc_blocks(&mm, start, mm_size,
- size, size, &tmp, flags),
- "buddy_alloc unexpectedly succeeded at top-order %d/%d, it should be full!",
- top, max_order);
- }
-
- drm_buddy_free_list(&mm, &holes, 0);
-
- /* Nothing larger than blocks of chunk_size now available */
- for (order = 1; order <= max_order; order++) {
- size = get_size(order, mm.chunk_size);
- KUNIT_ASSERT_TRUE_MSG(test, drm_buddy_alloc_blocks(&mm, start, mm_size,
- size, size, &tmp, flags),
- "buddy_alloc unexpectedly succeeded at order %d, it should be full!",
- order);
- }
-
- list_splice_tail(&holes, &blocks);
- drm_buddy_free_list(&mm, &blocks, 0);
- drm_buddy_fini(&mm);
-}
-
-static void drm_test_buddy_alloc_pessimistic(struct kunit *test)
-{
- u64 mm_size, size, start = 0;
- struct drm_buddy_block *block, *bn;
- const unsigned int max_order = 16;
- unsigned long flags = 0;
- struct drm_buddy mm;
- unsigned int order;
- LIST_HEAD(blocks);
- LIST_HEAD(tmp);
-
- /*
- * Create a pot-sized mm, then allocate one of each possible
- * order within. This should leave the mm with exactly one
- * page left.
- */
-
- mm_size = SZ_4K << max_order;
- KUNIT_ASSERT_FALSE_MSG(test, drm_buddy_init(&mm, mm_size, SZ_4K),
- "buddy_init failed\n");
-
- KUNIT_EXPECT_EQ(test, mm.max_order, max_order);
-
- for (order = 0; order < max_order; order++) {
- size = get_size(order, mm.chunk_size);
- KUNIT_ASSERT_FALSE_MSG(test, drm_buddy_alloc_blocks(&mm, start, mm_size,
- size, size, &tmp, flags),
- "buddy_alloc hit -ENOMEM with order=%d\n",
- order);
-
- block = list_first_entry_or_null(&tmp, struct drm_buddy_block, link);
- KUNIT_ASSERT_TRUE_MSG(test, block, "alloc_blocks has no blocks\n");
-
- list_move_tail(&block->link, &blocks);
- }
-
- /* And now the last remaining block available */
- size = get_size(0, mm.chunk_size);
- KUNIT_ASSERT_FALSE_MSG(test, drm_buddy_alloc_blocks(&mm, start, mm_size,
- size, size, &tmp, flags),
- "buddy_alloc hit -ENOMEM on final alloc\n");
-
- block = list_first_entry_or_null(&tmp, struct drm_buddy_block, link);
- KUNIT_ASSERT_TRUE_MSG(test, block, "alloc_blocks has no blocks\n");
-
- list_move_tail(&block->link, &blocks);
-
- /* Should be completely full! */
- for (order = max_order; order--;) {
- size = get_size(order, mm.chunk_size);
- KUNIT_ASSERT_TRUE_MSG(test, drm_buddy_alloc_blocks(&mm, start, mm_size,
- size, size, &tmp, flags),
- "buddy_alloc unexpectedly succeeded, it should be full!");
- }
-
- block = list_last_entry(&blocks, typeof(*block), link);
- list_del(&block->link);
- drm_buddy_free_block(&mm, block);
-
- /* As we free in increasing size, we make available larger blocks */
- order = 1;
- list_for_each_entry_safe(block, bn, &blocks, link) {
- list_del(&block->link);
- drm_buddy_free_block(&mm, block);
-
- size = get_size(order, mm.chunk_size);
- KUNIT_ASSERT_FALSE_MSG(test, drm_buddy_alloc_blocks(&mm, start, mm_size,
- size, size, &tmp, flags),
- "buddy_alloc hit -ENOMEM with order=%d\n",
- order);
-
- block = list_first_entry_or_null(&tmp, struct drm_buddy_block, link);
- KUNIT_ASSERT_TRUE_MSG(test, block, "alloc_blocks has no blocks\n");
-
- list_del(&block->link);
- drm_buddy_free_block(&mm, block);
- order++;
- }
-
- /* To confirm, now the whole mm should be available */
- size = get_size(max_order, mm.chunk_size);
- KUNIT_ASSERT_FALSE_MSG(test, drm_buddy_alloc_blocks(&mm, start, mm_size,
- size, size, &tmp, flags),
- "buddy_alloc (realloc) hit -ENOMEM with order=%d\n",
- max_order);
-
- block = list_first_entry_or_null(&tmp, struct drm_buddy_block, link);
- KUNIT_ASSERT_TRUE_MSG(test, block, "alloc_blocks has no blocks\n");
-
- list_del(&block->link);
- drm_buddy_free_block(&mm, block);
- drm_buddy_free_list(&mm, &blocks, 0);
- drm_buddy_fini(&mm);
-}
-
-static void drm_test_buddy_alloc_optimistic(struct kunit *test)
-{
- u64 mm_size, size, start = 0;
- struct drm_buddy_block *block;
- unsigned long flags = 0;
- const int max_order = 16;
- struct drm_buddy mm;
- LIST_HEAD(blocks);
- LIST_HEAD(tmp);
- int order;
-
- /*
- * Create a mm with one block of each order available, and
- * try to allocate them all.
- */
-
- mm_size = SZ_4K * ((1 << (max_order + 1)) - 1);
-
- KUNIT_ASSERT_FALSE_MSG(test, drm_buddy_init(&mm, mm_size, SZ_4K),
- "buddy_init failed\n");
-
- KUNIT_EXPECT_EQ(test, mm.max_order, max_order);
-
- for (order = 0; order <= max_order; order++) {
- size = get_size(order, mm.chunk_size);
- KUNIT_ASSERT_FALSE_MSG(test, drm_buddy_alloc_blocks(&mm, start, mm_size,
- size, size, &tmp, flags),
- "buddy_alloc hit -ENOMEM with order=%d\n",
- order);
-
- block = list_first_entry_or_null(&tmp, struct drm_buddy_block, link);
- KUNIT_ASSERT_TRUE_MSG(test, block, "alloc_blocks has no blocks\n");
-
- list_move_tail(&block->link, &blocks);
- }
-
- /* Should be completely full! */
- size = get_size(0, mm.chunk_size);
- KUNIT_ASSERT_TRUE_MSG(test, drm_buddy_alloc_blocks(&mm, start, mm_size,
- size, size, &tmp, flags),
- "buddy_alloc unexpectedly succeeded, it should be full!");
-
- drm_buddy_free_list(&mm, &blocks, 0);
- drm_buddy_fini(&mm);
-}
-
-static void drm_test_buddy_alloc_limit(struct kunit *test)
-{
- u64 size = U64_MAX, start = 0;
- struct drm_buddy_block *block;
- unsigned long flags = 0;
- LIST_HEAD(allocated);
- struct drm_buddy mm;
-
- KUNIT_EXPECT_FALSE(test, drm_buddy_init(&mm, size, SZ_4K));
-
- KUNIT_EXPECT_EQ_MSG(test, mm.max_order, DRM_BUDDY_MAX_ORDER,
- "mm.max_order(%d) != %d\n", mm.max_order,
- DRM_BUDDY_MAX_ORDER);
-
- size = mm.chunk_size << mm.max_order;
- KUNIT_EXPECT_FALSE(test, drm_buddy_alloc_blocks(&mm, start, size, size,
- mm.chunk_size, &allocated, flags));
-
- block = list_first_entry_or_null(&allocated, struct drm_buddy_block, link);
- KUNIT_EXPECT_TRUE(test, block);
-
- KUNIT_EXPECT_EQ_MSG(test, drm_buddy_block_order(block), mm.max_order,
- "block order(%d) != %d\n",
- drm_buddy_block_order(block), mm.max_order);
-
- KUNIT_EXPECT_EQ_MSG(test, drm_buddy_block_size(&mm, block),
- BIT_ULL(mm.max_order) * mm.chunk_size,
- "block size(%llu) != %llu\n",
- drm_buddy_block_size(&mm, block),
- BIT_ULL(mm.max_order) * mm.chunk_size);
-
- drm_buddy_free_list(&mm, &allocated, 0);
- drm_buddy_fini(&mm);
-}
-
-static int drm_buddy_suite_init(struct kunit_suite *suite)
-{
- while (!random_seed)
- random_seed = get_random_u32();
-
- kunit_info(suite, "Testing DRM buddy manager, with random_seed=0x%x\n",
- random_seed);
-
- return 0;
-}
-
-static struct kunit_case drm_buddy_tests[] = {
- KUNIT_CASE(drm_test_buddy_alloc_limit),
- KUNIT_CASE(drm_test_buddy_alloc_optimistic),
- KUNIT_CASE(drm_test_buddy_alloc_pessimistic),
- KUNIT_CASE(drm_test_buddy_alloc_pathological),
- KUNIT_CASE(drm_test_buddy_alloc_contiguous),
- KUNIT_CASE(drm_test_buddy_alloc_clear),
- KUNIT_CASE(drm_test_buddy_alloc_range_bias),
- {}
-};
-
-static struct kunit_suite drm_buddy_test_suite = {
- .name = "drm_buddy",
- .suite_init = drm_buddy_suite_init,
- .test_cases = drm_buddy_tests,
-};
-
-kunit_test_suite(drm_buddy_test_suite);
-
-MODULE_AUTHOR("Intel Corporation");
-MODULE_DESCRIPTION("Kunit test for drm_buddy functions");
-MODULE_LICENSE("GPL");
--- a/drivers/gpu/drm/tests/drm_exec_test.c
+++ b/drivers/gpu/drm/tests/drm_exec_test.c
@@ -16,8 +16,6 @@
#include <drm/drm_gem.h>
#include <drm/drm_kunit_helpers.h>
-#include "../lib/drm_random.h"
-
struct drm_exec_priv {
struct device *dev;
struct drm_device *drm;
--- a/drivers/gpu/drm/tests/drm_mm_test.c
+++ b/drivers/gpu/drm/tests/drm_mm_test.c
@@ -15,8 +15,6 @@
#include <drm/drm_mm.h>
-#include "../lib/drm_random.h"
-
enum {
BEST,
BOTTOMUP,
--- a/drivers/gpu/drm/ttm/tests/ttm_bo_validate_test.c
+++ b/drivers/gpu/drm/ttm/tests/ttm_bo_validate_test.c
@@ -251,7 +251,7 @@ static void ttm_bo_validate_basic(struct
NULL, &dummy_ttm_bo_destroy);
KUNIT_EXPECT_EQ(test, err, 0);
- snd_place = ttm_place_kunit_init(test, snd_mem, DRM_BUDDY_TOPDOWN_ALLOCATION);
+ snd_place = ttm_place_kunit_init(test, snd_mem, GPU_BUDDY_TOPDOWN_ALLOCATION);
snd_placement = ttm_placement_kunit_init(test, snd_place, 1);
err = ttm_bo_validate(bo, snd_placement, &ctx_val);
@@ -263,7 +263,7 @@ static void ttm_bo_validate_basic(struct
KUNIT_EXPECT_TRUE(test, ttm_tt_is_populated(bo->ttm));
KUNIT_EXPECT_EQ(test, bo->resource->mem_type, snd_mem);
KUNIT_EXPECT_EQ(test, bo->resource->placement,
- DRM_BUDDY_TOPDOWN_ALLOCATION);
+ GPU_BUDDY_TOPDOWN_ALLOCATION);
ttm_bo_put(bo);
ttm_mock_manager_fini(priv->ttm_dev, snd_mem);
--- a/drivers/gpu/drm/ttm/tests/ttm_mock_manager.c
+++ b/drivers/gpu/drm/ttm/tests/ttm_mock_manager.c
@@ -30,7 +30,7 @@ static int ttm_mock_manager_alloc(struct
{
struct ttm_mock_manager *manager = to_mock_mgr(man);
struct ttm_mock_resource *mock_res;
- struct drm_buddy *mm = &manager->mm;
+ struct gpu_buddy *mm = &manager->mm;
u64 lpfn, fpfn, alloc_size;
int err;
@@ -46,14 +46,14 @@ static int ttm_mock_manager_alloc(struct
INIT_LIST_HEAD(&mock_res->blocks);
if (place->flags & TTM_PL_FLAG_TOPDOWN)
- mock_res->flags |= DRM_BUDDY_TOPDOWN_ALLOCATION;
+ mock_res->flags |= GPU_BUDDY_TOPDOWN_ALLOCATION;
if (place->flags & TTM_PL_FLAG_CONTIGUOUS)
- mock_res->flags |= DRM_BUDDY_CONTIGUOUS_ALLOCATION;
+ mock_res->flags |= GPU_BUDDY_CONTIGUOUS_ALLOCATION;
alloc_size = (uint64_t)mock_res->base.size;
mutex_lock(&manager->lock);
- err = drm_buddy_alloc_blocks(mm, fpfn, lpfn, alloc_size,
+ err = gpu_buddy_alloc_blocks(mm, fpfn, lpfn, alloc_size,
manager->default_page_size,
&mock_res->blocks,
mock_res->flags);
@@ -66,7 +66,7 @@ static int ttm_mock_manager_alloc(struct
return 0;
error_free_blocks:
- drm_buddy_free_list(mm, &mock_res->blocks, 0);
+ gpu_buddy_free_list(mm, &mock_res->blocks, 0);
ttm_resource_fini(man, &mock_res->base);
mutex_unlock(&manager->lock);
@@ -78,10 +78,10 @@ static void ttm_mock_manager_free(struct
{
struct ttm_mock_manager *manager = to_mock_mgr(man);
struct ttm_mock_resource *mock_res = to_mock_mgr_resource(res);
- struct drm_buddy *mm = &manager->mm;
+ struct gpu_buddy *mm = &manager->mm;
mutex_lock(&manager->lock);
- drm_buddy_free_list(mm, &mock_res->blocks, 0);
+ gpu_buddy_free_list(mm, &mock_res->blocks, 0);
mutex_unlock(&manager->lock);
ttm_resource_fini(man, res);
@@ -105,7 +105,7 @@ int ttm_mock_manager_init(struct ttm_dev
mutex_init(&manager->lock);
- err = drm_buddy_init(&manager->mm, size, PAGE_SIZE);
+ err = gpu_buddy_init(&manager->mm, size, PAGE_SIZE);
if (err) {
kfree(manager);
@@ -141,7 +141,7 @@ void ttm_mock_manager_fini(struct ttm_de
ttm_resource_manager_set_used(man, false);
mutex_lock(&mock_man->lock);
- drm_buddy_fini(&mock_man->mm);
+ gpu_buddy_fini(&mock_man->mm);
mutex_unlock(&mock_man->lock);
ttm_set_driver_manager(bdev, mem_type, NULL);
--- a/drivers/gpu/drm/ttm/tests/ttm_mock_manager.h
+++ b/drivers/gpu/drm/ttm/tests/ttm_mock_manager.h
@@ -5,11 +5,11 @@
#ifndef TTM_MOCK_MANAGER_H
#define TTM_MOCK_MANAGER_H
-#include <drm/drm_buddy.h>
+#include <linux/gpu_buddy.h>
struct ttm_mock_manager {
struct ttm_resource_manager man;
- struct drm_buddy mm;
+ struct gpu_buddy mm;
u64 default_page_size;
/* protects allocations of mock buffer objects */
struct mutex lock;
--- a/drivers/gpu/drm/xe/xe_res_cursor.h
+++ b/drivers/gpu/drm/xe/xe_res_cursor.h
@@ -58,7 +58,7 @@ struct xe_res_cursor {
/** @dma_addr: Current element in a struct drm_pagemap_addr array */
const struct drm_pagemap_addr *dma_addr;
/** @mm: Buddy allocator for VRAM cursor */
- struct drm_buddy *mm;
+ struct gpu_buddy *mm;
/**
* @dma_start: DMA start address for the current segment.
* This may be different to @dma_addr.addr since elements in
@@ -69,7 +69,7 @@ struct xe_res_cursor {
u64 dma_seg_size;
};
-static struct drm_buddy *xe_res_get_buddy(struct ttm_resource *res)
+static struct gpu_buddy *xe_res_get_buddy(struct ttm_resource *res)
{
struct ttm_resource_manager *mgr;
@@ -104,30 +104,30 @@ static inline void xe_res_first(struct t
case XE_PL_STOLEN:
case XE_PL_VRAM0:
case XE_PL_VRAM1: {
- struct drm_buddy_block *block;
+ struct gpu_buddy_block *block;
struct list_head *head, *next;
- struct drm_buddy *mm = xe_res_get_buddy(res);
+ struct gpu_buddy *mm = xe_res_get_buddy(res);
head = &to_xe_ttm_vram_mgr_resource(res)->blocks;
block = list_first_entry_or_null(head,
- struct drm_buddy_block,
+ struct gpu_buddy_block,
link);
if (!block)
goto fallback;
- while (start >= drm_buddy_block_size(mm, block)) {
- start -= drm_buddy_block_size(mm, block);
+ while (start >= gpu_buddy_block_size(mm, block)) {
+ start -= gpu_buddy_block_size(mm, block);
next = block->link.next;
if (next != head)
- block = list_entry(next, struct drm_buddy_block,
+ block = list_entry(next, struct gpu_buddy_block,
link);
}
cur->mm = mm;
- cur->start = drm_buddy_block_offset(block) + start;
- cur->size = min(drm_buddy_block_size(mm, block) - start,
+ cur->start = gpu_buddy_block_offset(block) + start;
+ cur->size = min(gpu_buddy_block_size(mm, block) - start,
size);
cur->remaining = size;
cur->node = block;
@@ -259,7 +259,7 @@ static inline void xe_res_first_dma(cons
*/
static inline void xe_res_next(struct xe_res_cursor *cur, u64 size)
{
- struct drm_buddy_block *block;
+ struct gpu_buddy_block *block;
struct list_head *next;
u64 start;
@@ -295,18 +295,18 @@ static inline void xe_res_next(struct xe
block = cur->node;
next = block->link.next;
- block = list_entry(next, struct drm_buddy_block, link);
+ block = list_entry(next, struct gpu_buddy_block, link);
- while (start >= drm_buddy_block_size(cur->mm, block)) {
- start -= drm_buddy_block_size(cur->mm, block);
+ while (start >= gpu_buddy_block_size(cur->mm, block)) {
+ start -= gpu_buddy_block_size(cur->mm, block);
next = block->link.next;
- block = list_entry(next, struct drm_buddy_block, link);
+ block = list_entry(next, struct gpu_buddy_block, link);
}
- cur->start = drm_buddy_block_offset(block) + start;
- cur->size = min(drm_buddy_block_size(cur->mm, block) - start,
+ cur->start = gpu_buddy_block_offset(block) + start;
+ cur->size = min(gpu_buddy_block_size(cur->mm, block) - start,
cur->remaining);
cur->node = block;
break;
--- a/drivers/gpu/drm/xe/xe_svm.c
+++ b/drivers/gpu/drm/xe/xe_svm.c
@@ -689,7 +689,7 @@ static u64 block_offset_to_pfn(struct xe
return PHYS_PFN(offset + vr->hpa_base);
}
-static struct drm_buddy *vram_to_buddy(struct xe_vram_region *vram)
+static struct gpu_buddy *vram_to_buddy(struct xe_vram_region *vram)
{
return &vram->ttm.mm;
}
@@ -700,16 +700,16 @@ static int xe_svm_populate_devmem_pfn(st
struct xe_bo *bo = to_xe_bo(devmem_allocation);
struct ttm_resource *res = bo->ttm.resource;
struct list_head *blocks = &to_xe_ttm_vram_mgr_resource(res)->blocks;
- struct drm_buddy_block *block;
+ struct gpu_buddy_block *block;
int j = 0;
list_for_each_entry(block, blocks, link) {
struct xe_vram_region *vr = block->private;
- struct drm_buddy *buddy = vram_to_buddy(vr);
- u64 block_pfn = block_offset_to_pfn(vr, drm_buddy_block_offset(block));
+ struct gpu_buddy *buddy = vram_to_buddy(vr);
+ u64 block_pfn = block_offset_to_pfn(vr, gpu_buddy_block_offset(block));
int i;
- for (i = 0; i < drm_buddy_block_size(buddy, block) >> PAGE_SHIFT; ++i)
+ for (i = 0; i < gpu_buddy_block_size(buddy, block) >> PAGE_SHIFT; ++i)
pfn[j++] = block_pfn + i;
}
@@ -877,7 +877,7 @@ static int xe_drm_pagemap_populate_mm(st
struct dma_fence *pre_migrate_fence = NULL;
struct xe_device *xe = vr->xe;
struct device *dev = xe->drm.dev;
- struct drm_buddy_block *block;
+ struct gpu_buddy_block *block;
struct xe_validation_ctx vctx;
struct list_head *blocks;
struct drm_exec exec;
--- a/drivers/gpu/drm/xe/xe_ttm_vram_mgr.c
+++ b/drivers/gpu/drm/xe/xe_ttm_vram_mgr.c
@@ -6,6 +6,7 @@
#include <drm/drm_managed.h>
#include <drm/drm_drv.h>
+#include <drm/drm_buddy.h>
#include <drm/ttm/ttm_placement.h>
#include <drm/ttm/ttm_range_manager.h>
@@ -17,16 +18,16 @@
#include "xe_ttm_vram_mgr.h"
#include "xe_vram_types.h"
-static inline struct drm_buddy_block *
+static inline struct gpu_buddy_block *
xe_ttm_vram_mgr_first_block(struct list_head *list)
{
- return list_first_entry_or_null(list, struct drm_buddy_block, link);
+ return list_first_entry_or_null(list, struct gpu_buddy_block, link);
}
-static inline bool xe_is_vram_mgr_blocks_contiguous(struct drm_buddy *mm,
+static inline bool xe_is_vram_mgr_blocks_contiguous(struct gpu_buddy *mm,
struct list_head *head)
{
- struct drm_buddy_block *block;
+ struct gpu_buddy_block *block;
u64 start, size;
block = xe_ttm_vram_mgr_first_block(head);
@@ -34,12 +35,12 @@ static inline bool xe_is_vram_mgr_blocks
return false;
while (head != block->link.next) {
- start = drm_buddy_block_offset(block);
- size = drm_buddy_block_size(mm, block);
+ start = gpu_buddy_block_offset(block);
+ size = gpu_buddy_block_size(mm, block);
- block = list_entry(block->link.next, struct drm_buddy_block,
+ block = list_entry(block->link.next, struct gpu_buddy_block,
link);
- if (start + size != drm_buddy_block_offset(block))
+ if (start + size != gpu_buddy_block_offset(block))
return false;
}
@@ -53,7 +54,7 @@ static int xe_ttm_vram_mgr_new(struct tt
{
struct xe_ttm_vram_mgr *mgr = to_xe_ttm_vram_mgr(man);
struct xe_ttm_vram_mgr_resource *vres;
- struct drm_buddy *mm = &mgr->mm;
+ struct gpu_buddy *mm = &mgr->mm;
u64 size, min_page_size;
unsigned long lpfn;
int err;
@@ -80,10 +81,10 @@ static int xe_ttm_vram_mgr_new(struct tt
INIT_LIST_HEAD(&vres->blocks);
if (place->flags & TTM_PL_FLAG_TOPDOWN)
- vres->flags |= DRM_BUDDY_TOPDOWN_ALLOCATION;
+ vres->flags |= GPU_BUDDY_TOPDOWN_ALLOCATION;
if (place->fpfn || lpfn != man->size >> PAGE_SHIFT)
- vres->flags |= DRM_BUDDY_RANGE_ALLOCATION;
+ vres->flags |= GPU_BUDDY_RANGE_ALLOCATION;
if (WARN_ON(!vres->base.size)) {
err = -EINVAL;
@@ -119,27 +120,27 @@ static int xe_ttm_vram_mgr_new(struct tt
lpfn = max_t(unsigned long, place->fpfn + (size >> PAGE_SHIFT), lpfn);
}
- err = drm_buddy_alloc_blocks(mm, (u64)place->fpfn << PAGE_SHIFT,
+ err = gpu_buddy_alloc_blocks(mm, (u64)place->fpfn << PAGE_SHIFT,
(u64)lpfn << PAGE_SHIFT, size,
min_page_size, &vres->blocks, vres->flags);
if (err)
goto error_unlock;
if (place->flags & TTM_PL_FLAG_CONTIGUOUS) {
- if (!drm_buddy_block_trim(mm, NULL, vres->base.size, &vres->blocks))
+ if (!gpu_buddy_block_trim(mm, NULL, vres->base.size, &vres->blocks))
size = vres->base.size;
}
if (lpfn <= mgr->visible_size >> PAGE_SHIFT) {
vres->used_visible_size = size;
} else {
- struct drm_buddy_block *block;
+ struct gpu_buddy_block *block;
list_for_each_entry(block, &vres->blocks, link) {
- u64 start = drm_buddy_block_offset(block);
+ u64 start = gpu_buddy_block_offset(block);
if (start < mgr->visible_size) {
- u64 end = start + drm_buddy_block_size(mm, block);
+ u64 end = start + gpu_buddy_block_size(mm, block);
vres->used_visible_size +=
min(end, mgr->visible_size) - start;
@@ -159,11 +160,11 @@ static int xe_ttm_vram_mgr_new(struct tt
* the object.
*/
if (vres->base.placement & TTM_PL_FLAG_CONTIGUOUS) {
- struct drm_buddy_block *block = list_first_entry(&vres->blocks,
+ struct gpu_buddy_block *block = list_first_entry(&vres->blocks,
typeof(*block),
link);
- vres->base.start = drm_buddy_block_offset(block) >> PAGE_SHIFT;
+ vres->base.start = gpu_buddy_block_offset(block) >> PAGE_SHIFT;
} else {
vres->base.start = XE_BO_INVALID_OFFSET;
}
@@ -185,10 +186,10 @@ static void xe_ttm_vram_mgr_del(struct t
struct xe_ttm_vram_mgr_resource *vres =
to_xe_ttm_vram_mgr_resource(res);
struct xe_ttm_vram_mgr *mgr = to_xe_ttm_vram_mgr(man);
- struct drm_buddy *mm = &mgr->mm;
+ struct gpu_buddy *mm = &mgr->mm;
mutex_lock(&mgr->lock);
- drm_buddy_free_list(mm, &vres->blocks, 0);
+ gpu_buddy_free_list(mm, &vres->blocks, 0);
mgr->visible_avail += vres->used_visible_size;
mutex_unlock(&mgr->lock);
@@ -201,7 +202,7 @@ static void xe_ttm_vram_mgr_debug(struct
struct drm_printer *printer)
{
struct xe_ttm_vram_mgr *mgr = to_xe_ttm_vram_mgr(man);
- struct drm_buddy *mm = &mgr->mm;
+ struct gpu_buddy *mm = &mgr->mm;
mutex_lock(&mgr->lock);
drm_printf(printer, "default_page_size: %lluKiB\n",
@@ -224,8 +225,8 @@ static bool xe_ttm_vram_mgr_intersects(s
struct xe_ttm_vram_mgr *mgr = to_xe_ttm_vram_mgr(man);
struct xe_ttm_vram_mgr_resource *vres =
to_xe_ttm_vram_mgr_resource(res);
- struct drm_buddy *mm = &mgr->mm;
- struct drm_buddy_block *block;
+ struct gpu_buddy *mm = &mgr->mm;
+ struct gpu_buddy_block *block;
if (!place->fpfn && !place->lpfn)
return true;
@@ -235,9 +236,9 @@ static bool xe_ttm_vram_mgr_intersects(s
list_for_each_entry(block, &vres->blocks, link) {
unsigned long fpfn =
- drm_buddy_block_offset(block) >> PAGE_SHIFT;
+ gpu_buddy_block_offset(block) >> PAGE_SHIFT;
unsigned long lpfn = fpfn +
- (drm_buddy_block_size(mm, block) >> PAGE_SHIFT);
+ (gpu_buddy_block_size(mm, block) >> PAGE_SHIFT);
if (place->fpfn < lpfn && place->lpfn > fpfn)
return true;
@@ -254,8 +255,8 @@ static bool xe_ttm_vram_mgr_compatible(s
struct xe_ttm_vram_mgr *mgr = to_xe_ttm_vram_mgr(man);
struct xe_ttm_vram_mgr_resource *vres =
to_xe_ttm_vram_mgr_resource(res);
- struct drm_buddy *mm = &mgr->mm;
- struct drm_buddy_block *block;
+ struct gpu_buddy *mm = &mgr->mm;
+ struct gpu_buddy_block *block;
if (!place->fpfn && !place->lpfn)
return true;
@@ -265,9 +266,9 @@ static bool xe_ttm_vram_mgr_compatible(s
list_for_each_entry(block, &vres->blocks, link) {
unsigned long fpfn =
- drm_buddy_block_offset(block) >> PAGE_SHIFT;
+ gpu_buddy_block_offset(block) >> PAGE_SHIFT;
unsigned long lpfn = fpfn +
- (drm_buddy_block_size(mm, block) >> PAGE_SHIFT);
+ (gpu_buddy_block_size(mm, block) >> PAGE_SHIFT);
if (fpfn < place->fpfn || lpfn > place->lpfn)
return false;
@@ -297,7 +298,7 @@ static void ttm_vram_mgr_fini(struct drm
WARN_ON_ONCE(mgr->visible_avail != mgr->visible_size);
- drm_buddy_fini(&mgr->mm);
+ gpu_buddy_fini(&mgr->mm);
ttm_resource_manager_cleanup(&mgr->manager);
@@ -328,7 +329,7 @@ int __xe_ttm_vram_mgr_init(struct xe_dev
mgr->visible_avail = io_size;
ttm_resource_manager_init(man, &xe->ttm, size);
- err = drm_buddy_init(&mgr->mm, man->size, default_page_size);
+ err = gpu_buddy_init(&mgr->mm, man->size, default_page_size);
if (err)
return err;
@@ -376,7 +377,7 @@ int xe_ttm_vram_mgr_alloc_sgt(struct xe_
if (!*sgt)
return -ENOMEM;
- /* Determine the number of DRM_BUDDY blocks to export */
+ /* Determine the number of GPU_BUDDY blocks to export */
xe_res_first(res, offset, length, &cursor);
while (cursor.remaining) {
num_entries++;
@@ -393,10 +394,10 @@ int xe_ttm_vram_mgr_alloc_sgt(struct xe_
sg->length = 0;
/*
- * Walk down DRM_BUDDY blocks to populate scatterlist nodes
- * @note: Use iterator api to get first the DRM_BUDDY block
+ * Walk down GPU_BUDDY blocks to populate scatterlist nodes
+ * @note: Use iterator api to get first the GPU_BUDDY block
* and the number of bytes from it. Access the following
- * DRM_BUDDY block(s) if more buffer needs to exported
+ * GPU_BUDDY block(s) if more buffer needs to exported
*/
xe_res_first(res, offset, length, &cursor);
for_each_sgtable_sg((*sgt), sg, i) {
--- a/drivers/gpu/drm/xe/xe_ttm_vram_mgr_types.h
+++ b/drivers/gpu/drm/xe/xe_ttm_vram_mgr_types.h
@@ -6,7 +6,7 @@
#ifndef _XE_TTM_VRAM_MGR_TYPES_H_
#define _XE_TTM_VRAM_MGR_TYPES_H_
-#include <drm/drm_buddy.h>
+#include <linux/gpu_buddy.h>
#include <drm/ttm/ttm_device.h>
/**
@@ -18,7 +18,7 @@ struct xe_ttm_vram_mgr {
/** @manager: Base TTM resource manager */
struct ttm_resource_manager manager;
/** @mm: DRM buddy allocator which manages the VRAM */
- struct drm_buddy mm;
+ struct gpu_buddy mm;
/** @visible_size: Proped size of the CPU visible portion */
u64 visible_size;
/** @visible_avail: CPU visible portion still unallocated */
--- /dev/null
+++ b/drivers/gpu/tests/Makefile
@@ -0,0 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
+
+gpu_buddy_tests-y = gpu_buddy_test.o gpu_random.o
+obj-$(CONFIG_GPU_BUDDY_KUNIT_TEST) += gpu_buddy_tests.o
--- /dev/null
+++ b/drivers/gpu/tests/gpu_buddy_test.c
@@ -0,0 +1,788 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2019 Intel Corporation
+ * Copyright © 2022 Maíra Canal <mairacanal@riseup.net>
+ */
+
+#include <kunit/test.h>
+
+#include <linux/prime_numbers.h>
+#include <linux/sched/signal.h>
+#include <linux/sizes.h>
+
+#include <linux/gpu_buddy.h>
+
+#include "gpu_random.h"
+
+static unsigned int random_seed;
+
+static inline u64 get_size(int order, u64 chunk_size)
+{
+ return (1 << order) * chunk_size;
+}
+
+static void gpu_test_buddy_alloc_range_bias(struct kunit *test)
+{
+ u32 mm_size, size, ps, bias_size, bias_start, bias_end, bias_rem;
+ GPU_RND_STATE(prng, random_seed);
+ unsigned int i, count, *order;
+ struct gpu_buddy_block *block;
+ unsigned long flags;
+ struct gpu_buddy mm;
+ LIST_HEAD(allocated);
+
+ bias_size = SZ_1M;
+ ps = roundup_pow_of_two(prandom_u32_state(&prng) % bias_size);
+ ps = max(SZ_4K, ps);
+ mm_size = (SZ_8M-1) & ~(ps-1); /* Multiple roots */
+
+ kunit_info(test, "mm_size=%u, ps=%u\n", mm_size, ps);
+
+ KUNIT_ASSERT_FALSE_MSG(test, gpu_buddy_init(&mm, mm_size, ps),
+ "buddy_init failed\n");
+
+ count = mm_size / bias_size;
+ order = gpu_random_order(count, &prng);
+ KUNIT_EXPECT_TRUE(test, order);
+
+ /*
+ * Idea is to split the address space into uniform bias ranges, and then
+ * in some random order allocate within each bias, using various
+ * patterns within. This should detect if allocations leak out from a
+ * given bias, for example.
+ */
+
+ for (i = 0; i < count; i++) {
+ LIST_HEAD(tmp);
+ u32 size;
+
+ bias_start = order[i] * bias_size;
+ bias_end = bias_start + bias_size;
+ bias_rem = bias_size;
+
+ /* internal round_up too big */
+ KUNIT_ASSERT_TRUE_MSG(test,
+ gpu_buddy_alloc_blocks(&mm, bias_start,
+ bias_end, bias_size + ps, bias_size,
+ &allocated,
+ GPU_BUDDY_RANGE_ALLOCATION),
+ "buddy_alloc failed with bias(%x-%x), size=%u, ps=%u\n",
+ bias_start, bias_end, bias_size, bias_size);
+
+ /* size too big */
+ KUNIT_ASSERT_TRUE_MSG(test,
+ gpu_buddy_alloc_blocks(&mm, bias_start,
+ bias_end, bias_size + ps, ps,
+ &allocated,
+ GPU_BUDDY_RANGE_ALLOCATION),
+ "buddy_alloc didn't fail with bias(%x-%x), size=%u, ps=%u\n",
+ bias_start, bias_end, bias_size + ps, ps);
+
+ /* bias range too small for size */
+ KUNIT_ASSERT_TRUE_MSG(test,
+ gpu_buddy_alloc_blocks(&mm, bias_start + ps,
+ bias_end, bias_size, ps,
+ &allocated,
+ GPU_BUDDY_RANGE_ALLOCATION),
+ "buddy_alloc didn't fail with bias(%x-%x), size=%u, ps=%u\n",
+ bias_start + ps, bias_end, bias_size, ps);
+
+ /* bias misaligned */
+ KUNIT_ASSERT_TRUE_MSG(test,
+ gpu_buddy_alloc_blocks(&mm, bias_start + ps,
+ bias_end - ps,
+ bias_size >> 1, bias_size >> 1,
+ &allocated,
+ GPU_BUDDY_RANGE_ALLOCATION),
+ "buddy_alloc h didn't fail with bias(%x-%x), size=%u, ps=%u\n",
+ bias_start + ps, bias_end - ps, bias_size >> 1, bias_size >> 1);
+
+ /* single big page */
+ KUNIT_ASSERT_FALSE_MSG(test,
+ gpu_buddy_alloc_blocks(&mm, bias_start,
+ bias_end, bias_size, bias_size,
+ &tmp,
+ GPU_BUDDY_RANGE_ALLOCATION),
+ "buddy_alloc i failed with bias(%x-%x), size=%u, ps=%u\n",
+ bias_start, bias_end, bias_size, bias_size);
+ gpu_buddy_free_list(&mm, &tmp, 0);
+
+ /* single page with internal round_up */
+ KUNIT_ASSERT_FALSE_MSG(test,
+ gpu_buddy_alloc_blocks(&mm, bias_start,
+ bias_end, ps, bias_size,
+ &tmp,
+ GPU_BUDDY_RANGE_ALLOCATION),
+ "buddy_alloc failed with bias(%x-%x), size=%u, ps=%u\n",
+ bias_start, bias_end, ps, bias_size);
+ gpu_buddy_free_list(&mm, &tmp, 0);
+
+ /* random size within */
+ size = max(round_up(prandom_u32_state(&prng) % bias_rem, ps), ps);
+ if (size)
+ KUNIT_ASSERT_FALSE_MSG(test,
+ gpu_buddy_alloc_blocks(&mm, bias_start,
+ bias_end, size, ps,
+ &tmp,
+ GPU_BUDDY_RANGE_ALLOCATION),
+ "buddy_alloc failed with bias(%x-%x), size=%u, ps=%u\n",
+ bias_start, bias_end, size, ps);
+
+ bias_rem -= size;
+ /* too big for current avail */
+ KUNIT_ASSERT_TRUE_MSG(test,
+ gpu_buddy_alloc_blocks(&mm, bias_start,
+ bias_end, bias_rem + ps, ps,
+ &allocated,
+ GPU_BUDDY_RANGE_ALLOCATION),
+ "buddy_alloc didn't fail with bias(%x-%x), size=%u, ps=%u\n",
+ bias_start, bias_end, bias_rem + ps, ps);
+
+ if (bias_rem) {
+ /* random fill of the remainder */
+ size = max(round_up(prandom_u32_state(&prng) % bias_rem, ps), ps);
+ size = max(size, ps);
+
+ KUNIT_ASSERT_FALSE_MSG(test,
+ gpu_buddy_alloc_blocks(&mm, bias_start,
+ bias_end, size, ps,
+ &allocated,
+ GPU_BUDDY_RANGE_ALLOCATION),
+ "buddy_alloc failed with bias(%x-%x), size=%u, ps=%u\n",
+ bias_start, bias_end, size, ps);
+ /*
+ * Intentionally allow some space to be left
+ * unallocated, and ideally not always on the bias
+ * boundaries.
+ */
+ gpu_buddy_free_list(&mm, &tmp, 0);
+ } else {
+ list_splice_tail(&tmp, &allocated);
+ }
+ }
+
+ kfree(order);
+ gpu_buddy_free_list(&mm, &allocated, 0);
+ gpu_buddy_fini(&mm);
+
+ /*
+ * Something more free-form. Idea is to pick a random starting bias
+ * range within the address space and then start filling it up. Also
+ * randomly grow the bias range in both directions as we go along. This
+ * should give us bias start/end which is not always uniform like above,
+ * and in some cases will require the allocator to jump over already
+ * allocated nodes in the middle of the address space.
+ */
+
+ KUNIT_ASSERT_FALSE_MSG(test, gpu_buddy_init(&mm, mm_size, ps),
+ "buddy_init failed\n");
+
+ bias_start = round_up(prandom_u32_state(&prng) % (mm_size - ps), ps);
+ bias_end = round_up(bias_start + prandom_u32_state(&prng) % (mm_size - bias_start), ps);
+ bias_end = max(bias_end, bias_start + ps);
+ bias_rem = bias_end - bias_start;
+
+ do {
+ u32 size = max(round_up(prandom_u32_state(&prng) % bias_rem, ps), ps);
+
+ KUNIT_ASSERT_FALSE_MSG(test,
+ gpu_buddy_alloc_blocks(&mm, bias_start,
+ bias_end, size, ps,
+ &allocated,
+ GPU_BUDDY_RANGE_ALLOCATION),
+ "buddy_alloc failed with bias(%x-%x), size=%u, ps=%u\n",
+ bias_start, bias_end, size, ps);
+ bias_rem -= size;
+
+ /*
+ * Try to randomly grow the bias range in both directions, or
+ * only one, or perhaps don't grow at all.
+ */
+ do {
+ u32 old_bias_start = bias_start;
+ u32 old_bias_end = bias_end;
+
+ if (bias_start)
+ bias_start -= round_up(prandom_u32_state(&prng) % bias_start, ps);
+ if (bias_end != mm_size)
+ bias_end += round_up(prandom_u32_state(&prng) % (mm_size - bias_end), ps);
+
+ bias_rem += old_bias_start - bias_start;
+ bias_rem += bias_end - old_bias_end;
+ } while (!bias_rem && (bias_start || bias_end != mm_size));
+ } while (bias_rem);
+
+ KUNIT_ASSERT_EQ(test, bias_start, 0);
+ KUNIT_ASSERT_EQ(test, bias_end, mm_size);
+ KUNIT_ASSERT_TRUE_MSG(test,
+ gpu_buddy_alloc_blocks(&mm, bias_start, bias_end,
+ ps, ps,
+ &allocated,
+ GPU_BUDDY_RANGE_ALLOCATION),
+ "buddy_alloc passed with bias(%x-%x), size=%u\n",
+ bias_start, bias_end, ps);
+
+ gpu_buddy_free_list(&mm, &allocated, 0);
+ gpu_buddy_fini(&mm);
+
+ /*
+ * Allocate cleared blocks in the bias range when the GPU buddy's clear avail is
+ * zero. This will validate the bias range allocation in scenarios like system boot
+ * when no cleared blocks are available and exercise the fallback path too. The resulting
+ * blocks should always be dirty.
+ */
+
+ KUNIT_ASSERT_FALSE_MSG(test, gpu_buddy_init(&mm, mm_size, ps),
+ "buddy_init failed\n");
+
+ bias_start = round_up(prandom_u32_state(&prng) % (mm_size - ps), ps);
+ bias_end = round_up(bias_start + prandom_u32_state(&prng) % (mm_size - bias_start), ps);
+ bias_end = max(bias_end, bias_start + ps);
+ bias_rem = bias_end - bias_start;
+
+ flags = GPU_BUDDY_CLEAR_ALLOCATION | GPU_BUDDY_RANGE_ALLOCATION;
+ size = max(round_up(prandom_u32_state(&prng) % bias_rem, ps), ps);
+
+ KUNIT_ASSERT_FALSE_MSG(test,
+ gpu_buddy_alloc_blocks(&mm, bias_start,
+ bias_end, size, ps,
+ &allocated,
+ flags),
+ "buddy_alloc failed with bias(%x-%x), size=%u, ps=%u\n",
+ bias_start, bias_end, size, ps);
+
+ list_for_each_entry(block, &allocated, link)
+ KUNIT_EXPECT_EQ(test, gpu_buddy_block_is_clear(block), false);
+
+ gpu_buddy_free_list(&mm, &allocated, 0);
+ gpu_buddy_fini(&mm);
+}
+
+static void gpu_test_buddy_alloc_clear(struct kunit *test)
+{
+ unsigned long n_pages, total, i = 0;
+ const unsigned long ps = SZ_4K;
+ struct gpu_buddy_block *block;
+ const int max_order = 12;
+ LIST_HEAD(allocated);
+ struct gpu_buddy mm;
+ unsigned int order;
+ u32 mm_size, size;
+ LIST_HEAD(dirty);
+ LIST_HEAD(clean);
+
+ mm_size = SZ_4K << max_order;
+ KUNIT_EXPECT_FALSE(test, gpu_buddy_init(&mm, mm_size, ps));
+
+ KUNIT_EXPECT_EQ(test, mm.max_order, max_order);
+
+ /*
+ * Idea is to allocate and free some random portion of the address space,
+ * returning those pages as non-dirty and randomly alternate between
+ * requesting dirty and non-dirty pages (not going over the limit
+ * we freed as non-dirty), putting that into two separate lists.
+ * Loop over both lists at the end checking that the dirty list
+ * is indeed all dirty pages and vice versa. Free it all again,
+ * keeping the dirty/clear status.
+ */
+ KUNIT_ASSERT_FALSE_MSG(test, gpu_buddy_alloc_blocks(&mm, 0, mm_size,
+ 5 * ps, ps, &allocated,
+ GPU_BUDDY_TOPDOWN_ALLOCATION),
+ "buddy_alloc hit an error size=%lu\n", 5 * ps);
+ gpu_buddy_free_list(&mm, &allocated, GPU_BUDDY_CLEARED);
+
+ n_pages = 10;
+ do {
+ unsigned long flags;
+ struct list_head *list;
+ int slot = i % 2;
+
+ if (slot == 0) {
+ list = &dirty;
+ flags = 0;
+ } else {
+ list = &clean;
+ flags = GPU_BUDDY_CLEAR_ALLOCATION;
+ }
+
+ KUNIT_ASSERT_FALSE_MSG(test, gpu_buddy_alloc_blocks(&mm, 0, mm_size,
+ ps, ps, list,
+ flags),
+ "buddy_alloc hit an error size=%lu\n", ps);
+ } while (++i < n_pages);
+
+ list_for_each_entry(block, &clean, link)
+ KUNIT_EXPECT_EQ(test, gpu_buddy_block_is_clear(block), true);
+
+ list_for_each_entry(block, &dirty, link)
+ KUNIT_EXPECT_EQ(test, gpu_buddy_block_is_clear(block), false);
+
+ gpu_buddy_free_list(&mm, &clean, GPU_BUDDY_CLEARED);
+
+ /*
+ * Trying to go over the clear limit for some allocation.
+ * The allocation should never fail with reasonable page-size.
+ */
+ KUNIT_ASSERT_FALSE_MSG(test, gpu_buddy_alloc_blocks(&mm, 0, mm_size,
+ 10 * ps, ps, &clean,
+ GPU_BUDDY_CLEAR_ALLOCATION),
+ "buddy_alloc hit an error size=%lu\n", 10 * ps);
+
+ gpu_buddy_free_list(&mm, &clean, GPU_BUDDY_CLEARED);
+ gpu_buddy_free_list(&mm, &dirty, 0);
+ gpu_buddy_fini(&mm);
+
+ KUNIT_EXPECT_FALSE(test, gpu_buddy_init(&mm, mm_size, ps));
+
+ /*
+ * Create a new mm. Intentionally fragment the address space by creating
+ * two alternating lists. Free both lists, one as dirty the other as clean.
+ * Try to allocate double the previous size with matching min_page_size. The
+ * allocation should never fail as it calls the force_merge. Also check that
+ * the page is always dirty after force_merge. Free the page as dirty, then
+ * repeat the whole thing, increment the order until we hit the max_order.
+ */
+
+ i = 0;
+ n_pages = mm_size / ps;
+ do {
+ struct list_head *list;
+ int slot = i % 2;
+
+ if (slot == 0)
+ list = &dirty;
+ else
+ list = &clean;
+
+ KUNIT_ASSERT_FALSE_MSG(test, gpu_buddy_alloc_blocks(&mm, 0, mm_size,
+ ps, ps, list, 0),
+ "buddy_alloc hit an error size=%lu\n", ps);
+ } while (++i < n_pages);
+
+ gpu_buddy_free_list(&mm, &clean, GPU_BUDDY_CLEARED);
+ gpu_buddy_free_list(&mm, &dirty, 0);
+
+ order = 1;
+ do {
+ size = SZ_4K << order;
+
+ KUNIT_ASSERT_FALSE_MSG(test, gpu_buddy_alloc_blocks(&mm, 0, mm_size,
+ size, size, &allocated,
+ GPU_BUDDY_CLEAR_ALLOCATION),
+ "buddy_alloc hit an error size=%u\n", size);
+ total = 0;
+ list_for_each_entry(block, &allocated, link) {
+ if (size != mm_size)
+ KUNIT_EXPECT_EQ(test, gpu_buddy_block_is_clear(block), false);
+ total += gpu_buddy_block_size(&mm, block);
+ }
+ KUNIT_EXPECT_EQ(test, total, size);
+
+ gpu_buddy_free_list(&mm, &allocated, 0);
+ } while (++order <= max_order);
+
+ gpu_buddy_fini(&mm);
+
+ /*
+ * Create a new mm with a non power-of-two size. Allocate a random size from each
+ * root, free as cleared and then call fini. This will ensure the multi-root
+ * force merge during fini.
+ */
+ mm_size = (SZ_4K << max_order) + (SZ_4K << (max_order - 2));
+
+ KUNIT_EXPECT_FALSE(test, gpu_buddy_init(&mm, mm_size, ps));
+ KUNIT_EXPECT_EQ(test, mm.max_order, max_order);
+ KUNIT_ASSERT_FALSE_MSG(test, gpu_buddy_alloc_blocks(&mm, 0, SZ_4K << max_order,
+ 4 * ps, ps, &allocated,
+ GPU_BUDDY_RANGE_ALLOCATION),
+ "buddy_alloc hit an error size=%lu\n", 4 * ps);
+ gpu_buddy_free_list(&mm, &allocated, GPU_BUDDY_CLEARED);
+ KUNIT_ASSERT_FALSE_MSG(test, gpu_buddy_alloc_blocks(&mm, 0, SZ_4K << max_order,
+ 2 * ps, ps, &allocated,
+ GPU_BUDDY_CLEAR_ALLOCATION),
+ "buddy_alloc hit an error size=%lu\n", 2 * ps);
+ gpu_buddy_free_list(&mm, &allocated, GPU_BUDDY_CLEARED);
+ KUNIT_ASSERT_FALSE_MSG(test, gpu_buddy_alloc_blocks(&mm, SZ_4K << max_order, mm_size,
+ ps, ps, &allocated,
+ GPU_BUDDY_RANGE_ALLOCATION),
+ "buddy_alloc hit an error size=%lu\n", ps);
+ gpu_buddy_free_list(&mm, &allocated, GPU_BUDDY_CLEARED);
+ gpu_buddy_fini(&mm);
+}
+
+static void gpu_test_buddy_alloc_contiguous(struct kunit *test)
+{
+ const unsigned long ps = SZ_4K, mm_size = 16 * 3 * SZ_4K;
+ unsigned long i, n_pages, total;
+ struct gpu_buddy_block *block;
+ struct gpu_buddy mm;
+ LIST_HEAD(left);
+ LIST_HEAD(middle);
+ LIST_HEAD(right);
+ LIST_HEAD(allocated);
+
+ KUNIT_EXPECT_FALSE(test, gpu_buddy_init(&mm, mm_size, ps));
+
+ /*
+ * Idea is to fragment the address space by alternating block
+ * allocations between three different lists; one for left, middle and
+ * right. We can then free a list to simulate fragmentation. In
+ * particular we want to exercise the GPU_BUDDY_CONTIGUOUS_ALLOCATION,
+ * including the try_harder path.
+ */
+
+ i = 0;
+ n_pages = mm_size / ps;
+ do {
+ struct list_head *list;
+ int slot = i % 3;
+
+ if (slot == 0)
+ list = &left;
+ else if (slot == 1)
+ list = &middle;
+ else
+ list = &right;
+ KUNIT_ASSERT_FALSE_MSG(test,
+ gpu_buddy_alloc_blocks(&mm, 0, mm_size,
+ ps, ps, list, 0),
+ "buddy_alloc hit an error size=%lu\n",
+ ps);
+ } while (++i < n_pages);
+
+ KUNIT_ASSERT_TRUE_MSG(test, gpu_buddy_alloc_blocks(&mm, 0, mm_size,
+ 3 * ps, ps, &allocated,
+ GPU_BUDDY_CONTIGUOUS_ALLOCATION),
+ "buddy_alloc didn't error size=%lu\n", 3 * ps);
+
+ gpu_buddy_free_list(&mm, &middle, 0);
+ KUNIT_ASSERT_TRUE_MSG(test, gpu_buddy_alloc_blocks(&mm, 0, mm_size,
+ 3 * ps, ps, &allocated,
+ GPU_BUDDY_CONTIGUOUS_ALLOCATION),
+ "buddy_alloc didn't error size=%lu\n", 3 * ps);
+ KUNIT_ASSERT_TRUE_MSG(test, gpu_buddy_alloc_blocks(&mm, 0, mm_size,
+ 2 * ps, ps, &allocated,
+ GPU_BUDDY_CONTIGUOUS_ALLOCATION),
+ "buddy_alloc didn't error size=%lu\n", 2 * ps);
+
+ gpu_buddy_free_list(&mm, &right, 0);
+ KUNIT_ASSERT_TRUE_MSG(test, gpu_buddy_alloc_blocks(&mm, 0, mm_size,
+ 3 * ps, ps, &allocated,
+ GPU_BUDDY_CONTIGUOUS_ALLOCATION),
+ "buddy_alloc didn't error size=%lu\n", 3 * ps);
+ /*
+ * At this point we should have enough contiguous space for 2 blocks,
+ * however they are never buddies (since we freed middle and right) so
+ * will require the try_harder logic to find them.
+ */
+ KUNIT_ASSERT_FALSE_MSG(test, gpu_buddy_alloc_blocks(&mm, 0, mm_size,
+ 2 * ps, ps, &allocated,
+ GPU_BUDDY_CONTIGUOUS_ALLOCATION),
+ "buddy_alloc hit an error size=%lu\n", 2 * ps);
+
+ gpu_buddy_free_list(&mm, &left, 0);
+ KUNIT_ASSERT_FALSE_MSG(test, gpu_buddy_alloc_blocks(&mm, 0, mm_size,
+ 3 * ps, ps, &allocated,
+ GPU_BUDDY_CONTIGUOUS_ALLOCATION),
+ "buddy_alloc hit an error size=%lu\n", 3 * ps);
+
+ total = 0;
+ list_for_each_entry(block, &allocated, link)
+ total += gpu_buddy_block_size(&mm, block);
+
+ KUNIT_ASSERT_EQ(test, total, ps * 2 + ps * 3);
+
+ gpu_buddy_free_list(&mm, &allocated, 0);
+ gpu_buddy_fini(&mm);
+}
+
+static void gpu_test_buddy_alloc_pathological(struct kunit *test)
+{
+ u64 mm_size, size, start = 0;
+ struct gpu_buddy_block *block;
+ const int max_order = 3;
+ unsigned long flags = 0;
+ int order, top;
+ struct gpu_buddy mm;
+ LIST_HEAD(blocks);
+ LIST_HEAD(holes);
+ LIST_HEAD(tmp);
+
+ /*
+ * Create a pot-sized mm, then allocate one of each possible
+ * order within. This should leave the mm with exactly one
+ * page left. Free the largest block, then whittle down again.
+ * Eventually we will have a fully 50% fragmented mm.
+ */
+
+ mm_size = SZ_4K << max_order;
+ KUNIT_ASSERT_FALSE_MSG(test, gpu_buddy_init(&mm, mm_size, SZ_4K),
+ "buddy_init failed\n");
+
+ KUNIT_EXPECT_EQ(test, mm.max_order, max_order);
+
+ for (top = max_order; top; top--) {
+ /* Make room by freeing the largest allocated block */
+ block = list_first_entry_or_null(&blocks, typeof(*block), link);
+ if (block) {
+ list_del(&block->link);
+ gpu_buddy_free_block(&mm, block);
+ }
+
+ for (order = top; order--;) {
+ size = get_size(order, mm.chunk_size);
+ KUNIT_ASSERT_FALSE_MSG(test, gpu_buddy_alloc_blocks(&mm, start,
+ mm_size, size, size,
+ &tmp, flags),
+ "buddy_alloc hit -ENOMEM with order=%d, top=%d\n",
+ order, top);
+
+ block = list_first_entry_or_null(&tmp, struct gpu_buddy_block, link);
+ KUNIT_ASSERT_TRUE_MSG(test, block, "alloc_blocks has no blocks\n");
+
+ list_move_tail(&block->link, &blocks);
+ }
+
+ /* There should be one final page for this sub-allocation */
+ size = get_size(0, mm.chunk_size);
+ KUNIT_ASSERT_FALSE_MSG(test, gpu_buddy_alloc_blocks(&mm, start, mm_size,
+ size, size, &tmp, flags),
+ "buddy_alloc hit -ENOMEM for hole\n");
+
+ block = list_first_entry_or_null(&tmp, struct gpu_buddy_block, link);
+ KUNIT_ASSERT_TRUE_MSG(test, block, "alloc_blocks has no blocks\n");
+
+ list_move_tail(&block->link, &holes);
+
+ size = get_size(top, mm.chunk_size);
+ KUNIT_ASSERT_TRUE_MSG(test, gpu_buddy_alloc_blocks(&mm, start, mm_size,
+ size, size, &tmp, flags),
+ "buddy_alloc unexpectedly succeeded at top-order %d/%d, it should be full!",
+ top, max_order);
+ }
+
+ gpu_buddy_free_list(&mm, &holes, 0);
+
+ /* Nothing larger than blocks of chunk_size now available */
+ for (order = 1; order <= max_order; order++) {
+ size = get_size(order, mm.chunk_size);
+ KUNIT_ASSERT_TRUE_MSG(test, gpu_buddy_alloc_blocks(&mm, start, mm_size,
+ size, size, &tmp, flags),
+ "buddy_alloc unexpectedly succeeded at order %d, it should be full!",
+ order);
+ }
+
+ list_splice_tail(&holes, &blocks);
+ gpu_buddy_free_list(&mm, &blocks, 0);
+ gpu_buddy_fini(&mm);
+}
+
+static void gpu_test_buddy_alloc_pessimistic(struct kunit *test)
+{
+ u64 mm_size, size, start = 0;
+ struct gpu_buddy_block *block, *bn;
+ const unsigned int max_order = 16;
+ unsigned long flags = 0;
+ struct gpu_buddy mm;
+ unsigned int order;
+ LIST_HEAD(blocks);
+ LIST_HEAD(tmp);
+
+ /*
+ * Create a pot-sized mm, then allocate one of each possible
+ * order within. This should leave the mm with exactly one
+ * page left.
+ */
+
+ mm_size = SZ_4K << max_order;
+ KUNIT_ASSERT_FALSE_MSG(test, gpu_buddy_init(&mm, mm_size, SZ_4K),
+ "buddy_init failed\n");
+
+ KUNIT_EXPECT_EQ(test, mm.max_order, max_order);
+
+ for (order = 0; order < max_order; order++) {
+ size = get_size(order, mm.chunk_size);
+ KUNIT_ASSERT_FALSE_MSG(test, gpu_buddy_alloc_blocks(&mm, start, mm_size,
+ size, size, &tmp, flags),
+ "buddy_alloc hit -ENOMEM with order=%d\n",
+ order);
+
+ block = list_first_entry_or_null(&tmp, struct gpu_buddy_block, link);
+ KUNIT_ASSERT_TRUE_MSG(test, block, "alloc_blocks has no blocks\n");
+
+ list_move_tail(&block->link, &blocks);
+ }
+
+ /* And now the last remaining block available */
+ size = get_size(0, mm.chunk_size);
+ KUNIT_ASSERT_FALSE_MSG(test, gpu_buddy_alloc_blocks(&mm, start, mm_size,
+ size, size, &tmp, flags),
+ "buddy_alloc hit -ENOMEM on final alloc\n");
+
+ block = list_first_entry_or_null(&tmp, struct gpu_buddy_block, link);
+ KUNIT_ASSERT_TRUE_MSG(test, block, "alloc_blocks has no blocks\n");
+
+ list_move_tail(&block->link, &blocks);
+
+ /* Should be completely full! */
+ for (order = max_order; order--;) {
+ size = get_size(order, mm.chunk_size);
+ KUNIT_ASSERT_TRUE_MSG(test, gpu_buddy_alloc_blocks(&mm, start, mm_size,
+ size, size, &tmp, flags),
+ "buddy_alloc unexpectedly succeeded, it should be full!");
+ }
+
+ block = list_last_entry(&blocks, typeof(*block), link);
+ list_del(&block->link);
+ gpu_buddy_free_block(&mm, block);
+
+ /* As we free in increasing size, we make available larger blocks */
+ order = 1;
+ list_for_each_entry_safe(block, bn, &blocks, link) {
+ list_del(&block->link);
+ gpu_buddy_free_block(&mm, block);
+
+ size = get_size(order, mm.chunk_size);
+ KUNIT_ASSERT_FALSE_MSG(test, gpu_buddy_alloc_blocks(&mm, start, mm_size,
+ size, size, &tmp, flags),
+ "buddy_alloc hit -ENOMEM with order=%d\n",
+ order);
+
+ block = list_first_entry_or_null(&tmp, struct gpu_buddy_block, link);
+ KUNIT_ASSERT_TRUE_MSG(test, block, "alloc_blocks has no blocks\n");
+
+ list_del(&block->link);
+ gpu_buddy_free_block(&mm, block);
+ order++;
+ }
+
+ /* To confirm, now the whole mm should be available */
+ size = get_size(max_order, mm.chunk_size);
+ KUNIT_ASSERT_FALSE_MSG(test, gpu_buddy_alloc_blocks(&mm, start, mm_size,
+ size, size, &tmp, flags),
+ "buddy_alloc (realloc) hit -ENOMEM with order=%d\n",
+ max_order);
+
+ block = list_first_entry_or_null(&tmp, struct gpu_buddy_block, link);
+ KUNIT_ASSERT_TRUE_MSG(test, block, "alloc_blocks has no blocks\n");
+
+ list_del(&block->link);
+ gpu_buddy_free_block(&mm, block);
+ gpu_buddy_free_list(&mm, &blocks, 0);
+ gpu_buddy_fini(&mm);
+}
+
+static void gpu_test_buddy_alloc_optimistic(struct kunit *test)
+{
+ u64 mm_size, size, start = 0;
+ struct gpu_buddy_block *block;
+ unsigned long flags = 0;
+ const int max_order = 16;
+ struct gpu_buddy mm;
+ LIST_HEAD(blocks);
+ LIST_HEAD(tmp);
+ int order;
+
+ /*
+ * Create a mm with one block of each order available, and
+ * try to allocate them all.
+ */
+
+ mm_size = SZ_4K * ((1 << (max_order + 1)) - 1);
+
+ KUNIT_ASSERT_FALSE_MSG(test, gpu_buddy_init(&mm, mm_size, SZ_4K),
+ "buddy_init failed\n");
+
+ KUNIT_EXPECT_EQ(test, mm.max_order, max_order);
+
+ for (order = 0; order <= max_order; order++) {
+ size = get_size(order, mm.chunk_size);
+ KUNIT_ASSERT_FALSE_MSG(test, gpu_buddy_alloc_blocks(&mm, start, mm_size,
+ size, size, &tmp, flags),
+ "buddy_alloc hit -ENOMEM with order=%d\n",
+ order);
+
+ block = list_first_entry_or_null(&tmp, struct gpu_buddy_block, link);
+ KUNIT_ASSERT_TRUE_MSG(test, block, "alloc_blocks has no blocks\n");
+
+ list_move_tail(&block->link, &blocks);
+ }
+
+ /* Should be completely full! */
+ size = get_size(0, mm.chunk_size);
+ KUNIT_ASSERT_TRUE_MSG(test, gpu_buddy_alloc_blocks(&mm, start, mm_size,
+ size, size, &tmp, flags),
+ "buddy_alloc unexpectedly succeeded, it should be full!");
+
+ gpu_buddy_free_list(&mm, &blocks, 0);
+ gpu_buddy_fini(&mm);
+}
+
+static void gpu_test_buddy_alloc_limit(struct kunit *test)
+{
+ u64 size = U64_MAX, start = 0;
+ struct gpu_buddy_block *block;
+ unsigned long flags = 0;
+ LIST_HEAD(allocated);
+ struct gpu_buddy mm;
+
+ KUNIT_EXPECT_FALSE(test, gpu_buddy_init(&mm, size, SZ_4K));
+
+ KUNIT_EXPECT_EQ_MSG(test, mm.max_order, GPU_BUDDY_MAX_ORDER,
+ "mm.max_order(%d) != %d\n", mm.max_order,
+ GPU_BUDDY_MAX_ORDER);
+
+ size = mm.chunk_size << mm.max_order;
+ KUNIT_EXPECT_FALSE(test, gpu_buddy_alloc_blocks(&mm, start, size, size,
+ mm.chunk_size, &allocated, flags));
+
+ block = list_first_entry_or_null(&allocated, struct gpu_buddy_block, link);
+ KUNIT_EXPECT_TRUE(test, block);
+
+ KUNIT_EXPECT_EQ_MSG(test, gpu_buddy_block_order(block), mm.max_order,
+ "block order(%d) != %d\n",
+ gpu_buddy_block_order(block), mm.max_order);
+
+ KUNIT_EXPECT_EQ_MSG(test, gpu_buddy_block_size(&mm, block),
+ BIT_ULL(mm.max_order) * mm.chunk_size,
+ "block size(%llu) != %llu\n",
+ gpu_buddy_block_size(&mm, block),
+ BIT_ULL(mm.max_order) * mm.chunk_size);
+
+ gpu_buddy_free_list(&mm, &allocated, 0);
+ gpu_buddy_fini(&mm);
+}
+
+static int gpu_buddy_suite_init(struct kunit_suite *suite)
+{
+ while (!random_seed)
+ random_seed = get_random_u32();
+
+ kunit_info(suite, "Testing GPU buddy manager, with random_seed=0x%x\n",
+ random_seed);
+
+ return 0;
+}
+
+static struct kunit_case gpu_buddy_tests[] = {
+ KUNIT_CASE(gpu_test_buddy_alloc_limit),
+ KUNIT_CASE(gpu_test_buddy_alloc_optimistic),
+ KUNIT_CASE(gpu_test_buddy_alloc_pessimistic),
+ KUNIT_CASE(gpu_test_buddy_alloc_pathological),
+ KUNIT_CASE(gpu_test_buddy_alloc_contiguous),
+ KUNIT_CASE(gpu_test_buddy_alloc_clear),
+ KUNIT_CASE(gpu_test_buddy_alloc_range_bias),
+ {}
+};
+
+static struct kunit_suite gpu_buddy_test_suite = {
+ .name = "gpu_buddy",
+ .suite_init = gpu_buddy_suite_init,
+ .test_cases = gpu_buddy_tests,
+};
+
+kunit_test_suite(gpu_buddy_test_suite);
+
+MODULE_AUTHOR("Intel Corporation");
+MODULE_DESCRIPTION("Kunit test for gpu_buddy functions");
+MODULE_LICENSE("GPL");
--- /dev/null
+++ b/drivers/gpu/tests/gpu_random.c
@@ -0,0 +1,44 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <linux/bitops.h>
+#include <linux/export.h>
+#include <linux/kernel.h>
+#include <linux/random.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+
+#include "gpu_random.h"
+
+u32 gpu_prandom_u32_max_state(u32 ep_ro, struct rnd_state *state)
+{
+ return upper_32_bits((u64)prandom_u32_state(state) * ep_ro);
+}
+EXPORT_SYMBOL(gpu_prandom_u32_max_state);
+
+void gpu_random_reorder(unsigned int *order, unsigned int count,
+ struct rnd_state *state)
+{
+ unsigned int i, j;
+
+ for (i = 0; i < count; ++i) {
+ BUILD_BUG_ON(sizeof(unsigned int) > sizeof(u32));
+ j = gpu_prandom_u32_max_state(count, state);
+ swap(order[i], order[j]);
+ }
+}
+EXPORT_SYMBOL(gpu_random_reorder);
+
+unsigned int *gpu_random_order(unsigned int count, struct rnd_state *state)
+{
+ unsigned int *order, i;
+
+ order = kmalloc_array(count, sizeof(*order), GFP_KERNEL);
+ if (!order)
+ return order;
+
+ for (i = 0; i < count; i++)
+ order[i] = i;
+
+ gpu_random_reorder(order, count, state);
+ return order;
+}
+EXPORT_SYMBOL(gpu_random_order);
--- /dev/null
+++ b/drivers/gpu/tests/gpu_random.h
@@ -0,0 +1,28 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __GPU_RANDOM_H__
+#define __GPU_RANDOM_H__
+
+/* This is a temporary home for a couple of utility functions that should
+ * be transposed to lib/ at the earliest convenience.
+ */
+
+#include <linux/prandom.h>
+
+#define GPU_RND_STATE_INITIALIZER(seed__) ({ \
+ struct rnd_state state__; \
+ prandom_seed_state(&state__, (seed__)); \
+ state__; \
+})
+
+#define GPU_RND_STATE(name__, seed__) \
+ struct rnd_state name__ = GPU_RND_STATE_INITIALIZER(seed__)
+
+unsigned int *gpu_random_order(unsigned int count,
+ struct rnd_state *state);
+void gpu_random_reorder(unsigned int *order,
+ unsigned int count,
+ struct rnd_state *state);
+u32 gpu_prandom_u32_max_state(u32 ep_ro,
+ struct rnd_state *state);
+
+#endif /* !__GPU_RANDOM_H__ */
--- a/drivers/video/Kconfig
+++ b/drivers/video/Kconfig
@@ -37,6 +37,7 @@ source "drivers/char/agp/Kconfig"
source "drivers/gpu/vga/Kconfig"
+source "drivers/gpu/Kconfig"
source "drivers/gpu/host1x/Kconfig"
source "drivers/gpu/ipu-v3/Kconfig"
source "drivers/gpu/nova-core/Kconfig"
--- a/include/drm/drm_buddy.h
+++ b/include/drm/drm_buddy.h
@@ -6,166 +6,13 @@
#ifndef __DRM_BUDDY_H__
#define __DRM_BUDDY_H__
-#include <linux/bitops.h>
-#include <linux/list.h>
-#include <linux/slab.h>
-#include <linux/sched.h>
-#include <linux/rbtree.h>
+#include <linux/gpu_buddy.h>
-#include <drm/drm_print.h>
+struct drm_printer;
-#define DRM_BUDDY_RANGE_ALLOCATION BIT(0)
-#define DRM_BUDDY_TOPDOWN_ALLOCATION BIT(1)
-#define DRM_BUDDY_CONTIGUOUS_ALLOCATION BIT(2)
-#define DRM_BUDDY_CLEAR_ALLOCATION BIT(3)
-#define DRM_BUDDY_CLEARED BIT(4)
-#define DRM_BUDDY_TRIM_DISABLE BIT(5)
-
-struct drm_buddy_block {
-#define DRM_BUDDY_HEADER_OFFSET GENMASK_ULL(63, 12)
-#define DRM_BUDDY_HEADER_STATE GENMASK_ULL(11, 10)
-#define DRM_BUDDY_ALLOCATED (1 << 10)
-#define DRM_BUDDY_FREE (2 << 10)
-#define DRM_BUDDY_SPLIT (3 << 10)
-#define DRM_BUDDY_HEADER_CLEAR GENMASK_ULL(9, 9)
-/* Free to be used, if needed in the future */
-#define DRM_BUDDY_HEADER_UNUSED GENMASK_ULL(8, 6)
-#define DRM_BUDDY_HEADER_ORDER GENMASK_ULL(5, 0)
- u64 header;
-
- struct drm_buddy_block *left;
- struct drm_buddy_block *right;
- struct drm_buddy_block *parent;
-
- void *private; /* owned by creator */
-
- /*
- * While the block is allocated by the user through drm_buddy_alloc*,
- * the user has ownership of the link, for example to maintain within
- * a list, if so desired. As soon as the block is freed with
- * drm_buddy_free* ownership is given back to the mm.
- */
- union {
- struct rb_node rb;
- struct list_head link;
- };
-
- struct list_head tmp_link;
-};
-
-/* Order-zero must be at least SZ_4K */
-#define DRM_BUDDY_MAX_ORDER (63 - 12)
-
-/*
- * Binary Buddy System.
- *
- * Locking should be handled by the user, a simple mutex around
- * drm_buddy_alloc* and drm_buddy_free* should suffice.
- */
-struct drm_buddy {
- /* Maintain a free list for each order. */
- struct rb_root **free_trees;
-
- /*
- * Maintain explicit binary tree(s) to track the allocation of the
- * address space. This gives us a simple way of finding a buddy block
- * and performing the potentially recursive merge step when freeing a
- * block. Nodes are either allocated or free, in which case they will
- * also exist on the respective free list.
- */
- struct drm_buddy_block **roots;
-
- /*
- * Anything from here is public, and remains static for the lifetime of
- * the mm. Everything above is considered do-not-touch.
- */
- unsigned int n_roots;
- unsigned int max_order;
-
- /* Must be at least SZ_4K */
- u64 chunk_size;
- u64 size;
- u64 avail;
- u64 clear_avail;
-};
-
-static inline u64
-drm_buddy_block_offset(const struct drm_buddy_block *block)
-{
- return block->header & DRM_BUDDY_HEADER_OFFSET;
-}
-
-static inline unsigned int
-drm_buddy_block_order(struct drm_buddy_block *block)
-{
- return block->header & DRM_BUDDY_HEADER_ORDER;
-}
-
-static inline unsigned int
-drm_buddy_block_state(struct drm_buddy_block *block)
-{
- return block->header & DRM_BUDDY_HEADER_STATE;
-}
-
-static inline bool
-drm_buddy_block_is_allocated(struct drm_buddy_block *block)
-{
- return drm_buddy_block_state(block) == DRM_BUDDY_ALLOCATED;
-}
-
-static inline bool
-drm_buddy_block_is_clear(struct drm_buddy_block *block)
-{
- return block->header & DRM_BUDDY_HEADER_CLEAR;
-}
-
-static inline bool
-drm_buddy_block_is_free(struct drm_buddy_block *block)
-{
- return drm_buddy_block_state(block) == DRM_BUDDY_FREE;
-}
-
-static inline bool
-drm_buddy_block_is_split(struct drm_buddy_block *block)
-{
- return drm_buddy_block_state(block) == DRM_BUDDY_SPLIT;
-}
-
-static inline u64
-drm_buddy_block_size(struct drm_buddy *mm,
- struct drm_buddy_block *block)
-{
- return mm->chunk_size << drm_buddy_block_order(block);
-}
-
-int drm_buddy_init(struct drm_buddy *mm, u64 size, u64 chunk_size);
-
-void drm_buddy_fini(struct drm_buddy *mm);
-
-struct drm_buddy_block *
-drm_get_buddy(struct drm_buddy_block *block);
-
-int drm_buddy_alloc_blocks(struct drm_buddy *mm,
- u64 start, u64 end, u64 size,
- u64 min_page_size,
- struct list_head *blocks,
- unsigned long flags);
-
-int drm_buddy_block_trim(struct drm_buddy *mm,
- u64 *start,
- u64 new_size,
- struct list_head *blocks);
-
-void drm_buddy_reset_clear(struct drm_buddy *mm, bool is_clear);
-
-void drm_buddy_free_block(struct drm_buddy *mm, struct drm_buddy_block *block);
-
-void drm_buddy_free_list(struct drm_buddy *mm,
- struct list_head *objects,
- unsigned int flags);
-
-void drm_buddy_print(struct drm_buddy *mm, struct drm_printer *p);
-void drm_buddy_block_print(struct drm_buddy *mm,
- struct drm_buddy_block *block,
+/* DRM-specific GPU Buddy Allocator print helpers */
+void drm_buddy_print(struct gpu_buddy *mm, struct drm_printer *p);
+void drm_buddy_block_print(struct gpu_buddy *mm,
+ struct gpu_buddy_block *block,
struct drm_printer *p);
#endif
--- /dev/null
+++ b/include/linux/gpu_buddy.h
@@ -0,0 +1,177 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2021 Intel Corporation
+ */
+
+#ifndef __GPU_BUDDY_H__
+#define __GPU_BUDDY_H__
+
+#include <linux/bitops.h>
+#include <linux/list.h>
+#include <linux/slab.h>
+#include <linux/sched.h>
+#include <linux/rbtree.h>
+
+#define GPU_BUDDY_RANGE_ALLOCATION BIT(0)
+#define GPU_BUDDY_TOPDOWN_ALLOCATION BIT(1)
+#define GPU_BUDDY_CONTIGUOUS_ALLOCATION BIT(2)
+#define GPU_BUDDY_CLEAR_ALLOCATION BIT(3)
+#define GPU_BUDDY_CLEARED BIT(4)
+#define GPU_BUDDY_TRIM_DISABLE BIT(5)
+
+enum gpu_buddy_free_tree {
+ GPU_BUDDY_CLEAR_TREE = 0,
+ GPU_BUDDY_DIRTY_TREE,
+ GPU_BUDDY_MAX_FREE_TREES,
+};
+
+#define for_each_free_tree(tree) \
+ for ((tree) = 0; (tree) < GPU_BUDDY_MAX_FREE_TREES; (tree)++)
+
+struct gpu_buddy_block {
+#define GPU_BUDDY_HEADER_OFFSET GENMASK_ULL(63, 12)
+#define GPU_BUDDY_HEADER_STATE GENMASK_ULL(11, 10)
+#define GPU_BUDDY_ALLOCATED (1 << 10)
+#define GPU_BUDDY_FREE (2 << 10)
+#define GPU_BUDDY_SPLIT (3 << 10)
+#define GPU_BUDDY_HEADER_CLEAR GENMASK_ULL(9, 9)
+/* Free to be used, if needed in the future */
+#define GPU_BUDDY_HEADER_UNUSED GENMASK_ULL(8, 6)
+#define GPU_BUDDY_HEADER_ORDER GENMASK_ULL(5, 0)
+ u64 header;
+
+ struct gpu_buddy_block *left;
+ struct gpu_buddy_block *right;
+ struct gpu_buddy_block *parent;
+
+ void *private; /* owned by creator */
+
+ /*
+ * While the block is allocated by the user through gpu_buddy_alloc*,
+ * the user has ownership of the link, for example to maintain within
+ * a list, if so desired. As soon as the block is freed with
+ * gpu_buddy_free* ownership is given back to the mm.
+ */
+ union {
+ struct rb_node rb;
+ struct list_head link;
+ };
+
+ struct list_head tmp_link;
+};
+
+/* Order-zero must be at least SZ_4K */
+#define GPU_BUDDY_MAX_ORDER (63 - 12)
+
+/*
+ * Binary Buddy System.
+ *
+ * Locking should be handled by the user, a simple mutex around
+ * gpu_buddy_alloc* and gpu_buddy_free* should suffice.
+ */
+struct gpu_buddy {
+ /* Maintain a free list for each order. */
+ struct rb_root **free_trees;
+
+ /*
+ * Maintain explicit binary tree(s) to track the allocation of the
+ * address space. This gives us a simple way of finding a buddy block
+ * and performing the potentially recursive merge step when freeing a
+ * block. Nodes are either allocated or free, in which case they will
+ * also exist on the respective free list.
+ */
+ struct gpu_buddy_block **roots;
+
+ /*
+ * Anything from here is public, and remains static for the lifetime of
+ * the mm. Everything above is considered do-not-touch.
+ */
+ unsigned int n_roots;
+ unsigned int max_order;
+
+ /* Must be at least SZ_4K */
+ u64 chunk_size;
+ u64 size;
+ u64 avail;
+ u64 clear_avail;
+};
+
+static inline u64
+gpu_buddy_block_offset(const struct gpu_buddy_block *block)
+{
+ return block->header & GPU_BUDDY_HEADER_OFFSET;
+}
+
+static inline unsigned int
+gpu_buddy_block_order(struct gpu_buddy_block *block)
+{
+ return block->header & GPU_BUDDY_HEADER_ORDER;
+}
+
+static inline unsigned int
+gpu_buddy_block_state(struct gpu_buddy_block *block)
+{
+ return block->header & GPU_BUDDY_HEADER_STATE;
+}
+
+static inline bool
+gpu_buddy_block_is_allocated(struct gpu_buddy_block *block)
+{
+ return gpu_buddy_block_state(block) == GPU_BUDDY_ALLOCATED;
+}
+
+static inline bool
+gpu_buddy_block_is_clear(struct gpu_buddy_block *block)
+{
+ return block->header & GPU_BUDDY_HEADER_CLEAR;
+}
+
+static inline bool
+gpu_buddy_block_is_free(struct gpu_buddy_block *block)
+{
+ return gpu_buddy_block_state(block) == GPU_BUDDY_FREE;
+}
+
+static inline bool
+gpu_buddy_block_is_split(struct gpu_buddy_block *block)
+{
+ return gpu_buddy_block_state(block) == GPU_BUDDY_SPLIT;
+}
+
+static inline u64
+gpu_buddy_block_size(struct gpu_buddy *mm,
+ struct gpu_buddy_block *block)
+{
+ return mm->chunk_size << gpu_buddy_block_order(block);
+}
+
+int gpu_buddy_init(struct gpu_buddy *mm, u64 size, u64 chunk_size);
+
+void gpu_buddy_fini(struct gpu_buddy *mm);
+
+struct gpu_buddy_block *
+gpu_get_buddy(struct gpu_buddy_block *block);
+
+int gpu_buddy_alloc_blocks(struct gpu_buddy *mm,
+ u64 start, u64 end, u64 size,
+ u64 min_page_size,
+ struct list_head *blocks,
+ unsigned long flags);
+
+int gpu_buddy_block_trim(struct gpu_buddy *mm,
+ u64 *start,
+ u64 new_size,
+ struct list_head *blocks);
+
+void gpu_buddy_reset_clear(struct gpu_buddy *mm, bool is_clear);
+
+void gpu_buddy_free_block(struct gpu_buddy *mm, struct gpu_buddy_block *block);
+
+void gpu_buddy_free_list(struct gpu_buddy *mm,
+ struct list_head *objects,
+ unsigned int flags);
+
+void gpu_buddy_print(struct gpu_buddy *mm);
+void gpu_buddy_block_print(struct gpu_buddy *mm,
+ struct gpu_buddy_block *block);
+#endif
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 623/675] gpu/buddy: bail out of try_harder when alignment cannot be honoured
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (621 preceding siblings ...)
2026-07-30 14:15 ` [PATCH 6.18 622/675] gpu: Move DRM buddy allocator one level up (part two) Greg Kroah-Hartman
@ 2026-07-30 14:15 ` Greg Kroah-Hartman
2026-07-30 14:15 ` [PATCH 6.18 624/675] pinctrl: renesas: rzg2l: Use -ENOTSUPP instead of -EOPNOTSUPP Greg Kroah-Hartman
` (56 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:15 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Christian König, Matthew Auld,
Timur Kristóf, John Olender, Arunpravin Paneer Selvam,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Arunpravin Paneer Selvam <Arunpravin.PaneerSelvam@amd.com>
[ Upstream commit 56bc6384314fb9ae98975fb2af8b143097ede3dc ]
The try_harder contiguous fallback could return a range whose start
offset did not match the caller's min_block_size. When a candidate's
start is misaligned, realign it: free the misaligned run and reallocate
exactly @size at the next lower min_block_size boundary. This keeps the
returned size unchanged with no surplus to trim, and rejects the request
only when no aligned candidate fits.
v2: align misaligned candidates down to min_block_size instead of
bailing out, for both the RHS and LHS paths (Matthew).
Fixes: 0a1844bf0b53 ("drm/buddy: Improve contiguous memory allocation")
Suggested-by: Christian König <christian.koenig@amd.com>
Cc: Matthew Auld <matthew.auld@intel.com>
Cc: Christian König <christian.koenig@amd.com>
Cc: Timur Kristóf <timur.kristof@gmail.com>
Cc: stable@vger.kernel.org
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Tested-by: John Olender <john.olender@gmail.com>
Signed-off-by: Arunpravin Paneer Selvam <Arunpravin.PaneerSelvam@amd.com>
Link: https://patch.msgid.link/20260709131050.1022759-1-Arunpravin.PaneerSelvam@amd.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/buddy.c | 65 ++++++++++++++++++++++++++++++++++++----------------
1 file changed, 45 insertions(+), 20 deletions(-)
--- a/drivers/gpu/buddy.c
+++ b/drivers/gpu/buddy.c
@@ -901,22 +901,30 @@ static int __gpu_buddy_alloc_range(struc
blocks, total_allocated_on_err);
}
+static int __alloc_contig_aligned_retry(struct gpu_buddy *mm,
+ u64 unaligned_offset,
+ u64 size,
+ u64 min_block_size,
+ struct list_head *blocks)
+{
+ u64 aligned_offset = round_down(unaligned_offset, min_block_size);
+
+ return __gpu_buddy_alloc_range(mm, aligned_offset, size, NULL, blocks);
+}
+
static int __alloc_contig_try_harder(struct gpu_buddy *mm,
u64 size,
u64 min_block_size,
struct list_head *blocks)
{
- u64 rhs_offset, lhs_offset, lhs_size, filled;
+ u64 rhs_offset, lhs_offset, filled;
struct gpu_buddy_block *block;
unsigned int tree, order;
- LIST_HEAD(blocks_lhs);
- unsigned long pages;
u64 modify_size;
int err;
modify_size = rounddown_pow_of_two(size);
- pages = modify_size >> ilog2(mm->chunk_size);
- order = fls(pages) - 1;
+ order = ilog2(modify_size) - ilog2(mm->chunk_size);
if (order == 0)
return -ENOSPC;
@@ -932,31 +940,48 @@ static int __alloc_contig_try_harder(str
while (iter) {
block = rbtree_get_free_block(iter);
- /* Allocate blocks traversing RHS */
rhs_offset = gpu_buddy_block_offset(block);
+
+ /* Allocate blocks traversing RHS */
err = __gpu_buddy_alloc_range(mm, rhs_offset, size,
&filled, blocks);
- if (!err || err != -ENOSPC)
+ if (err && err != -ENOSPC)
return err;
-
- lhs_size = max((size - filled), min_block_size);
- if (!IS_ALIGNED(lhs_size, min_block_size))
- lhs_size = round_up(lhs_size, min_block_size);
-
- /* Allocate blocks traversing LHS */
- lhs_offset = gpu_buddy_block_offset(block) - lhs_size;
- err = __gpu_buddy_alloc_range(mm, lhs_offset, lhs_size,
- NULL, &blocks_lhs);
+ if (!err && IS_ALIGNED(rhs_offset, min_block_size))
+ return 0;
if (!err) {
- list_splice(&blocks_lhs, blocks);
+ /* Allocate the unaligned RHS offset using round_down */
+ gpu_buddy_free_list_internal(mm, blocks);
+ err = __alloc_contig_aligned_retry(mm, rhs_offset,
+ size,
+ min_block_size,
+ blocks);
+ if (!err)
+ return 0;
+ if (err != -ENOSPC) {
+ gpu_buddy_free_list_internal(mm, blocks);
+ return err;
+ }
+ goto next;
+ }
+
+ if (size - filled > rhs_offset)
+ goto next;
+
+ lhs_offset = rhs_offset - (size - filled);
+
+ /* Allocate the unaligned LHS offset using round_down */
+ gpu_buddy_free_list_internal(mm, blocks);
+ err = __alloc_contig_aligned_retry(mm, lhs_offset, size,
+ min_block_size, blocks);
+ if (!err)
return 0;
- } else if (err != -ENOSPC) {
+ if (err != -ENOSPC) {
gpu_buddy_free_list_internal(mm, blocks);
return err;
}
- /* Free blocks for the next iteration */
+next:
gpu_buddy_free_list_internal(mm, blocks);
-
iter = rb_prev(iter);
}
}
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 624/675] pinctrl: renesas: rzg2l: Use -ENOTSUPP instead of -EOPNOTSUPP
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (622 preceding siblings ...)
2026-07-30 14:15 ` [PATCH 6.18 623/675] gpu/buddy: bail out of try_harder when alignment cannot be honoured Greg Kroah-Hartman
@ 2026-07-30 14:15 ` Greg Kroah-Hartman
2026-07-30 14:15 ` [PATCH 6.18 625/675] NFSD: pass nfsd_file to nfsd_iter_read() Greg Kroah-Hartman
` (55 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:15 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Claudiu Beznea, Bartosz Golaszewski,
Geert Uytterhoeven, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
[ Upstream commit c1492da3939c89372929e062d731f328f7693f1e ]
The pinctrl and GPIO core code make exceptions for the -ENOTSUPP error
code. One such example is gpio_set_config_with_argument_optional(),
which returns success when gpio_set_config_with_argument() returns
-ENOTSUPP, but reports failure for all other error codes.
Returning -EOPNOTSUPP from the pinctrl driver on the unsupported pinctrl
operation may lead to boot failures when pinctrl drivers implements
struct gpio_chip::set_config, the system uses GPIO hogs, and the
struct gpio_chip::set_config implementation returns -EOPNOTSUPP for the
unsupported operations.
Return -ENOTSUPP for the unsupported pinctrl operation.
Fixes: 560c633d378a ("pinctrl: renesas: rzg2l: Drop oen_read and oen_write callbacks")
Fixes: c4c4637eb57f ("pinctrl: renesas: Add RZ/G2L pin and gpio controller driver")
Cc: stable@vger.kernel.org
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Reviewed-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://patch.msgid.link/20260515124008.2947838-2-claudiu.beznea@kernel.org
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/pinctrl/renesas/pinctrl-rzg2l.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
--- a/drivers/pinctrl/renesas/pinctrl-rzg2l.c
+++ b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
@@ -1097,7 +1097,7 @@ static int rzg2l_read_oen(struct rzg2l_p
int bit;
if (!pctrl->data->pin_to_oen_bit)
- return -EOPNOTSUPP;
+ return -ENOTSUPP;
bit = pctrl->data->pin_to_oen_bit(pctrl, _pin);
if (bit < 0)
@@ -1115,7 +1115,7 @@ static int rzg2l_write_oen(struct rzg2l_
int bit;
if (!pctrl->data->pin_to_oen_bit)
- return -EOPNOTSUPP;
+ return -ENOTSUPP;
bit = pctrl->data->pin_to_oen_bit(pctrl, _pin);
if (bit < 0)
@@ -1552,7 +1552,7 @@ static int rzg2l_pinctrl_pinconf_set(str
break;
default:
- return -EOPNOTSUPP;
+ return -ENOTSUPP;
}
}
@@ -1634,7 +1634,7 @@ static int rzg2l_pinctrl_pinconf_group_g
/* Check config matching between to pin */
if (i && prev_config != *config)
- return -EOPNOTSUPP;
+ return -ENOTSUPP;
prev_config = *config;
}
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 625/675] NFSD: pass nfsd_file to nfsd_iter_read()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (623 preceding siblings ...)
2026-07-30 14:15 ` [PATCH 6.18 624/675] pinctrl: renesas: rzg2l: Use -ENOTSUPP instead of -EOPNOTSUPP Greg Kroah-Hartman
@ 2026-07-30 14:15 ` Greg Kroah-Hartman
2026-07-30 14:15 ` [PATCH 6.18 626/675] sunrpc: allocate a separate bvec array for socket sends Greg Kroah-Hartman
` (54 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:15 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Mike Snitzer, Jeff Layton, NeilBrown,
Christoph Hellwig, Chuck Lever, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Mike Snitzer <snitzer@kernel.org>
[ Upstream commit 803bc849f0039291f546ba0e2237faebeb5c073e ]
Prepare for nfsd_iter_read() to use the DIO alignment stored in
nfsd_file by passing the nfsd_file to nfsd_iter_read() rather than
just the file which is associaed with the nfsd_file.
This means nfsd4_encode_readv() now also needs the nfsd_file rather
than the file. Instead of changing the file arg to be the nfsd_file,
we discard the file arg as the nfsd_file (and indeed the file) is
already available via the "read" argument.
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: NeilBrown <neil@brown.name>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Stable-dep-of: 18c1cc698861 ("SUNRPC: Return an error from xdr_buf_to_bvec() on overflow")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/nfsd/nfs4xdr.c | 8 ++++----
fs/nfsd/vfs.c | 7 ++++---
fs/nfsd/vfs.h | 2 +-
3 files changed, 9 insertions(+), 8 deletions(-)
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -4478,7 +4478,7 @@ out_err:
static __be32 nfsd4_encode_readv(struct nfsd4_compoundres *resp,
struct nfsd4_read *read,
- struct file *file, unsigned long maxcount)
+ unsigned long maxcount)
{
struct xdr_stream *xdr = resp->xdr;
unsigned int base = xdr->buf->page_len & ~PAGE_MASK;
@@ -4489,7 +4489,7 @@ static __be32 nfsd4_encode_readv(struct
if (xdr_reserve_space_vec(xdr, maxcount) < 0)
return nfserr_resource;
- nfserr = nfsd_iter_read(resp->rqstp, read->rd_fhp, file,
+ nfserr = nfsd_iter_read(resp->rqstp, read->rd_fhp, read->rd_nf,
read->rd_offset, &maxcount, base,
&read->rd_eof);
read->rd_length = maxcount;
@@ -4536,7 +4536,7 @@ nfsd4_encode_read(struct nfsd4_compoundr
if (file->f_op->splice_read && splice_ok)
nfserr = nfsd4_encode_splice_read(resp, read, file, maxcount);
else
- nfserr = nfsd4_encode_readv(resp, read, file, maxcount);
+ nfserr = nfsd4_encode_readv(resp, read, maxcount);
if (nfserr) {
xdr_truncate_encode(xdr, eof_offset);
return nfserr;
@@ -5432,7 +5432,7 @@ nfsd4_encode_read_plus_data(struct nfsd4
if (file->f_op->splice_read && splice_ok)
nfserr = nfsd4_encode_splice_read(resp, read, file, maxcount);
else
- nfserr = nfsd4_encode_readv(resp, read, file, maxcount);
+ nfserr = nfsd4_encode_readv(resp, read, maxcount);
if (nfserr)
return nfserr;
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -1078,7 +1078,7 @@ __be32 nfsd_splice_read(struct svc_rqst
* nfsd_iter_read - Perform a VFS read using an iterator
* @rqstp: RPC transaction context
* @fhp: file handle of file to be read
- * @file: opened struct file of file to be read
+ * @nf: opened struct nfsd_file of file to be read
* @offset: starting byte offset
* @count: IN: requested number of bytes; OUT: number of bytes read
* @base: offset in first page of read buffer
@@ -1091,9 +1091,10 @@ __be32 nfsd_splice_read(struct svc_rqst
* returned.
*/
__be32 nfsd_iter_read(struct svc_rqst *rqstp, struct svc_fh *fhp,
- struct file *file, loff_t offset, unsigned long *count,
+ struct nfsd_file *nf, loff_t offset, unsigned long *count,
unsigned int base, u32 *eof)
{
+ struct file *file = nf->nf_file;
unsigned long v, total;
struct iov_iter iter;
struct kiocb kiocb;
@@ -1346,7 +1347,7 @@ __be32 nfsd_read(struct svc_rqst *rqstp,
if (file->f_op->splice_read && nfsd_read_splice_ok(rqstp))
err = nfsd_splice_read(rqstp, fhp, file, offset, count, eof);
else
- err = nfsd_iter_read(rqstp, fhp, file, offset, count, 0, eof);
+ err = nfsd_iter_read(rqstp, fhp, nf, offset, count, 0, eof);
nfsd_file_put(nf);
trace_nfsd_read_done(rqstp, fhp, offset, *count);
--- a/fs/nfsd/vfs.h
+++ b/fs/nfsd/vfs.h
@@ -122,7 +122,7 @@ __be32 nfsd_splice_read(struct svc_rqst
unsigned long *count,
u32 *eof);
__be32 nfsd_iter_read(struct svc_rqst *rqstp, struct svc_fh *fhp,
- struct file *file, loff_t offset,
+ struct nfsd_file *nf, loff_t offset,
unsigned long *count, unsigned int base,
u32 *eof);
bool nfsd_read_splice_ok(struct svc_rqst *rqstp);
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 626/675] sunrpc: allocate a separate bvec array for socket sends
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (624 preceding siblings ...)
2026-07-30 14:15 ` [PATCH 6.18 625/675] NFSD: pass nfsd_file to nfsd_iter_read() Greg Kroah-Hartman
@ 2026-07-30 14:15 ` Greg Kroah-Hartman
2026-07-30 14:15 ` [PATCH 6.18 627/675] SUNRPC: Add helpers to convert xdr_buf byte ranges to scatterlists Greg Kroah-Hartman
` (53 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:15 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Jeff Layton, NeilBrown, Chuck Lever,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jeff Layton <jlayton@kernel.org>
[ Upstream commit 6b3b697d65d46a0f640216a3f6c72856c159c567 ]
svc_tcp_sendmsg() calls xdr_buf_to_bvec() with the second slot of
rq_bvec as the start, but doesn't reduce the array length by one, which
could lead to an array overrun. Also, rq_bvec is always rq_maxpages in
length, which can be too short in some cases, since the TCP record
marker consumes a slot.
Fix both problems by adding a separate bvec array to the svc_sock that
is specifically for sending. For TCP, make this array one slot longer
than rq_maxpages, to account for the record marker. For UDP, only
allocate as large an array as we need since it's limited to 64k of
payload.
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: NeilBrown <neil@brown.name>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Stable-dep-of: 18c1cc698861 ("SUNRPC: Return an error from xdr_buf_to_bvec() on overflow")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
include/linux/sunrpc/svcsock.h | 3 ++
net/sunrpc/svcsock.c | 55 +++++++++++++++++++++++++++++++++++------
2 files changed, 51 insertions(+), 7 deletions(-)
--- a/include/linux/sunrpc/svcsock.h
+++ b/include/linux/sunrpc/svcsock.h
@@ -26,6 +26,9 @@ struct svc_sock {
void (*sk_odata)(struct sock *);
void (*sk_owspace)(struct sock *);
+ /* For sends (protected by xpt_mutex) */
+ struct bio_vec *sk_bvec;
+
/* private TCP part */
/* On-the-wire fragment header: */
__be32 sk_marker;
--- a/net/sunrpc/svcsock.c
+++ b/net/sunrpc/svcsock.c
@@ -68,6 +68,17 @@
#define RPCDBG_FACILITY RPCDBG_SVCXPRT
+/*
+ * For UDP:
+ * 1 for header page
+ * enough pages for RPCSVC_MAXPAYLOAD_UDP
+ * 1 in case payload is not aligned
+ * 1 for tail page
+ */
+enum {
+ SUNRPC_MAX_UDP_SENDPAGES = 1 + RPCSVC_MAXPAYLOAD_UDP / PAGE_SIZE + 1 + 1
+};
+
/* To-do: to avoid tying up an nfsd thread while waiting for a
* handshake request, the request could instead be deferred.
*/
@@ -750,14 +761,14 @@ static int svc_udp_sendto(struct svc_rqs
if (svc_xprt_is_dead(xprt))
goto out_notconn;
- count = xdr_buf_to_bvec(rqstp->rq_bvec, rqstp->rq_maxpages, xdr);
+ count = xdr_buf_to_bvec(svsk->sk_bvec, SUNRPC_MAX_UDP_SENDPAGES, xdr);
- iov_iter_bvec(&msg.msg_iter, ITER_SOURCE, rqstp->rq_bvec,
+ iov_iter_bvec(&msg.msg_iter, ITER_SOURCE, svsk->sk_bvec,
count, rqstp->rq_res.len);
err = sock_sendmsg(svsk->sk_sock, &msg);
if (err == -ECONNREFUSED) {
/* ICMP error on earlier request. */
- iov_iter_bvec(&msg.msg_iter, ITER_SOURCE, rqstp->rq_bvec,
+ iov_iter_bvec(&msg.msg_iter, ITER_SOURCE, svsk->sk_bvec,
count, rqstp->rq_res.len);
err = sock_sendmsg(svsk->sk_sock, &msg);
}
@@ -1245,19 +1256,19 @@ static int svc_tcp_sendmsg(struct svc_so
int ret;
/* The stream record marker is copied into a temporary page
- * fragment buffer so that it can be included in rq_bvec.
+ * fragment buffer so that it can be included in sk_bvec.
*/
buf = page_frag_alloc(&svsk->sk_frag_cache, sizeof(marker),
GFP_KERNEL);
if (!buf)
return -ENOMEM;
memcpy(buf, &marker, sizeof(marker));
- bvec_set_virt(rqstp->rq_bvec, buf, sizeof(marker));
+ bvec_set_virt(svsk->sk_bvec, buf, sizeof(marker));
- count = xdr_buf_to_bvec(rqstp->rq_bvec + 1, rqstp->rq_maxpages,
+ count = xdr_buf_to_bvec(svsk->sk_bvec + 1, rqstp->rq_maxpages,
&rqstp->rq_res);
- iov_iter_bvec(&msg.msg_iter, ITER_SOURCE, rqstp->rq_bvec,
+ iov_iter_bvec(&msg.msg_iter, ITER_SOURCE, svsk->sk_bvec,
1 + count, sizeof(marker) + rqstp->rq_res.len);
ret = sock_sendmsg(svsk->sk_sock, &msg);
page_frag_free(buf);
@@ -1402,6 +1413,20 @@ void svc_sock_update_bufs(struct svc_ser
spin_unlock_bh(&serv->sv_lock);
}
+static int svc_sock_sendpages(struct svc_serv *serv, struct socket *sock, int flags)
+{
+ switch (sock->type) {
+ case SOCK_STREAM:
+ /* +1 for TCP record marker */
+ if (flags & SVC_SOCK_TEMPORARY)
+ return svc_serv_maxpages(serv) + 1;
+ return 0;
+ case SOCK_DGRAM:
+ return SUNRPC_MAX_UDP_SENDPAGES;
+ }
+ return -EINVAL;
+}
+
/*
* Initialize socket for RPC use and create svc_sock struct
*/
@@ -1412,12 +1437,26 @@ static struct svc_sock *svc_setup_socket
struct svc_sock *svsk;
struct sock *inet;
int pmap_register = !(flags & SVC_SOCK_ANONYMOUS);
+ int sendpages;
unsigned long pages;
+ sendpages = svc_sock_sendpages(serv, sock, flags);
+ if (sendpages < 0)
+ return ERR_PTR(sendpages);
+
pages = svc_serv_maxpages(serv);
svsk = kzalloc(struct_size(svsk, sk_pages, pages), GFP_KERNEL);
if (!svsk)
return ERR_PTR(-ENOMEM);
+
+ if (sendpages) {
+ svsk->sk_bvec = kcalloc(sendpages, sizeof(*svsk->sk_bvec), GFP_KERNEL);
+ if (!svsk->sk_bvec) {
+ kfree(svsk);
+ return ERR_PTR(-ENOMEM);
+ }
+ }
+
svsk->sk_maxpages = pages;
inet = sock->sk;
@@ -1429,6 +1468,7 @@ static struct svc_sock *svc_setup_socket
inet->sk_protocol,
ntohs(inet_sk(inet)->inet_sport));
if (err < 0) {
+ kfree(svsk->sk_bvec);
kfree(svsk);
return ERR_PTR(err);
}
@@ -1646,5 +1686,6 @@ static void svc_sock_free(struct svc_xpr
sock_release(sock);
page_frag_cache_drain(&svsk->sk_frag_cache);
+ kfree(svsk->sk_bvec);
kfree(svsk);
}
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 627/675] SUNRPC: Add helpers to convert xdr_buf byte ranges to scatterlists
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (625 preceding siblings ...)
2026-07-30 14:15 ` [PATCH 6.18 626/675] sunrpc: allocate a separate bvec array for socket sends Greg Kroah-Hartman
@ 2026-07-30 14:15 ` Greg Kroah-Hartman
2026-07-30 14:15 ` [PATCH 6.18 628/675] SUNRPC: Return an error from xdr_buf_to_bvec() on overflow Greg Kroah-Hartman
` (52 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:15 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Jeff Layton, Anna Schumaker,
Chuck Lever, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Chuck Lever <chuck.lever@oracle.com>
[ Upstream commit e9be933959b581effd426f93b86654f5fbf0c574 ]
The crypto/krb5 library accepts data in scatterlist form, but
the GSS-API layer presents RPC payloads as struct xdr_buf.
Bridge that gap with a pair of helper functions:
xdr_buf_to_sg() - populate a caller-supplied scatterlist
array from a byte range
xdr_buf_to_sg_alloc() - populate a caller-supplied inline
scatterlist, chaining to a heap-
allocated overflow for large payloads
The inline array (typically stack-allocated at eight entries)
covers the common case of small RPCs with no heap allocation
on the encrypt/decrypt path. Only buffers spanning many pages
incur a kmalloc for the chained extension.
The segment-walking logic follows the same head, page array,
tail traversal as xdr_process_buf(), but populates a
scatterlist directly rather than invoking a per-segment
callback. sg_next() traversal makes the walker safe for
chained scatterlists. Once subsequent patches reroute all
per-message crypto operations through crypto/krb5,
xdr_process_buf() loses its last callers and is removed.
Assisted-by: Claude:claude-opus-4-6
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Acked-by: Anna Schumaker <anna.schumaker@hammerspace.com>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Stable-dep-of: 18c1cc698861 ("SUNRPC: Return an error from xdr_buf_to_bvec() on overflow")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
include/linux/sunrpc/xdr.h | 15 +++
net/sunrpc/xdr.c | 199 +++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 214 insertions(+)
--- a/include/linux/sunrpc/xdr.h
+++ b/include/linux/sunrpc/xdr.h
@@ -140,6 +140,21 @@ int xdr_alloc_bvec(struct xdr_buf *buf,
void xdr_free_bvec(struct xdr_buf *buf);
unsigned int xdr_buf_to_bvec(struct bio_vec *bvec, unsigned int bvec_size,
const struct xdr_buf *xdr);
+int xdr_buf_to_sg(const struct xdr_buf *buf, unsigned int offset,
+ unsigned int len, struct scatterlist *sg, unsigned int nsg);
+int xdr_buf_to_sg_alloc(const struct xdr_buf *buf, unsigned int offset,
+ unsigned int len, struct scatterlist *sg_head,
+ unsigned int sg_head_nents,
+ struct scatterlist **sg_overflow, gfp_t gfp);
+
+/*
+ * Inline scatterlist entries for xdr_buf_to_sg_alloc(). Sized to cover the
+ * head kvec, tail kvec, and a few page fragments without any heap allocation.
+ */
+enum {
+ XDR_BUF_TO_SG_NENTS = 8,
+};
+
static inline __be32 *xdr_encode_array(__be32 *p, const void *s, unsigned int len)
{
--- a/net/sunrpc/xdr.c
+++ b/net/sunrpc/xdr.c
@@ -192,6 +192,205 @@ bvec_overflow:
EXPORT_SYMBOL_GPL(xdr_buf_to_bvec);
/**
+ * xdr_buf_to_sg - Populate a scatterlist from an xdr_buf range
+ * @buf: xdr_buf to map
+ * @offset: starting byte offset within @buf
+ * @len: number of bytes to cover
+ * @sg: scatterlist array initialized with sg_init_table()
+ * @nsg: number of entries available in @sg
+ *
+ * @sg is traversed with sg_next(), so callers may pass a list
+ * assembled with sg_chain().
+ *
+ * Return: on success, the number of scatterlist entries used; the
+ * last used entry is marked with sg_mark_end(). On failure, a
+ * negative errno.
+ */
+int xdr_buf_to_sg(const struct xdr_buf *buf, unsigned int offset,
+ unsigned int len, struct scatterlist *sg, unsigned int nsg)
+{
+ unsigned int page_len, thislen, page_offset;
+ struct scatterlist *cur = sg, *prev = NULL;
+ int nents = 0;
+ int i;
+
+ if (len == 0)
+ return 0;
+
+ if (offset >= buf->head[0].iov_len) {
+ offset -= buf->head[0].iov_len;
+ } else {
+ thislen = min_t(unsigned int,
+ buf->head[0].iov_len - offset, len);
+ if (nents >= nsg)
+ return -ENOSPC;
+ sg_set_buf(cur, buf->head[0].iov_base + offset,
+ thislen);
+ prev = cur;
+ cur = sg_next(cur);
+ nents++;
+ len -= thislen;
+ offset = 0;
+ }
+ if (len == 0)
+ goto done;
+
+ if (offset >= buf->page_len) {
+ offset -= buf->page_len;
+ } else {
+ page_len = min(buf->page_len - offset, len);
+ len -= page_len;
+ page_offset = (offset + buf->page_base) & (PAGE_SIZE - 1);
+ i = (offset + buf->page_base) >> PAGE_SHIFT;
+ thislen = PAGE_SIZE - page_offset;
+ do {
+ if (thislen > page_len)
+ thislen = page_len;
+ if (nents >= nsg)
+ return -ENOSPC;
+ sg_set_page(cur, buf->pages[i],
+ thislen, page_offset);
+ prev = cur;
+ cur = sg_next(cur);
+ nents++;
+ page_len -= thislen;
+ i++;
+ page_offset = 0;
+ thislen = PAGE_SIZE;
+ } while (page_len != 0);
+ offset = 0;
+ }
+ if (len == 0)
+ goto done;
+
+ if (offset < buf->tail[0].iov_len) {
+ thislen = min_t(unsigned int,
+ buf->tail[0].iov_len - offset, len);
+ if (nents >= nsg)
+ return -ENOSPC;
+ sg_set_buf(cur, buf->tail[0].iov_base + offset,
+ thislen);
+ prev = cur;
+ nents++;
+ len -= thislen;
+ }
+ if (len != 0)
+ return -EINVAL;
+
+done:
+ if (prev)
+ sg_mark_end(prev);
+ return nents;
+}
+EXPORT_SYMBOL_GPL(xdr_buf_to_sg);
+
+/*
+ * Count the scatterlist entries needed to cover [offset, offset + len)
+ * within @buf. Mirrors the walk in xdr_buf_to_sg() so the caller can
+ * size an allocation that matches the requested sub-range rather than
+ * the full xdr_buf.
+ */
+static unsigned int xdr_buf_sg_nents(const struct xdr_buf *buf,
+ unsigned int offset, unsigned int len)
+{
+ unsigned int nsg = 0, thislen, page_offset;
+
+ if (len == 0)
+ return 0;
+
+ if (offset < buf->head[0].iov_len) {
+ thislen = min_t(unsigned int,
+ buf->head[0].iov_len - offset, len);
+ nsg++;
+ len -= thislen;
+ offset = 0;
+ } else {
+ offset -= buf->head[0].iov_len;
+ }
+ if (len == 0)
+ return nsg;
+
+ if (offset < buf->page_len) {
+ thislen = min(buf->page_len - offset, len);
+ page_offset = (offset + buf->page_base) & (PAGE_SIZE - 1);
+ nsg += DIV_ROUND_UP(page_offset + thislen, PAGE_SIZE);
+ len -= thislen;
+ offset = 0;
+ } else {
+ offset -= buf->page_len;
+ }
+ if (len == 0)
+ return nsg;
+
+ if (offset < buf->tail[0].iov_len)
+ nsg++;
+ return nsg;
+}
+
+/**
+ * xdr_buf_to_sg_alloc - Populate a scatterlist for an xdr_buf range
+ * @buf: xdr_buf to map
+ * @offset: starting byte offset within @buf
+ * @len: number of bytes to cover
+ * @sg_head: caller-provided scatterlist array (typically stack-allocated)
+ * @sg_head_nents: number of entries in @sg_head
+ * @sg_overflow: OUT: chained extension, or NULL when @sg_head sufficed
+ * @gfp: memory allocation flags for overflow
+ *
+ * Populates @sg_head directly when the xdr_buf fits. When more
+ * entries are needed, an overflow scatterlist is allocated and
+ * chained from @sg_head so that the result is traversable with
+ * sg_next().
+ *
+ * Return: on success, the number of populated scatterlist entries
+ * (counting only data entries, not chain entries). @sg_head is
+ * the head of the resulting list. Caller must kfree @sg_overflow
+ * when done. On failure, a negative errno.
+ */
+int xdr_buf_to_sg_alloc(const struct xdr_buf *buf, unsigned int offset,
+ unsigned int len, struct scatterlist *sg_head,
+ unsigned int sg_head_nents,
+ struct scatterlist **sg_overflow, gfp_t gfp)
+{
+ unsigned int nsg;
+ int ret;
+
+ *sg_overflow = NULL;
+ if (len == 0)
+ return 0;
+
+ nsg = xdr_buf_sg_nents(buf, offset, len);
+ if (nsg == 0)
+ return -EINVAL;
+
+ if (nsg <= sg_head_nents) {
+ sg_init_table(sg_head, nsg);
+ } else {
+ /* +1 replaces the slot sg_chain() consumes as the link. */
+ unsigned int overflow_nents = nsg - sg_head_nents + 1;
+ struct scatterlist *overflow;
+
+ overflow = kmalloc_array(overflow_nents, sizeof(*overflow),
+ gfp);
+ if (!overflow)
+ return -ENOMEM;
+
+ sg_init_table(sg_head, sg_head_nents);
+ sg_init_table(overflow, overflow_nents);
+ sg_chain(sg_head, sg_head_nents, overflow);
+ *sg_overflow = overflow;
+ }
+
+ ret = xdr_buf_to_sg(buf, offset, len, sg_head, nsg);
+ if (ret < 0) {
+ kfree(*sg_overflow);
+ *sg_overflow = NULL;
+ }
+ return ret;
+}
+EXPORT_SYMBOL_GPL(xdr_buf_to_sg_alloc);
+
+/**
* xdr_inline_pages - Prepare receive buffer for a large reply
* @xdr: xdr_buf into which reply will be placed
* @offset: expected offset where data payload will start, in bytes
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 628/675] SUNRPC: Return an error from xdr_buf_to_bvec() on overflow
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (626 preceding siblings ...)
2026-07-30 14:15 ` [PATCH 6.18 627/675] SUNRPC: Add helpers to convert xdr_buf byte ranges to scatterlists Greg Kroah-Hartman
@ 2026-07-30 14:15 ` Greg Kroah-Hartman
2026-07-30 14:15 ` [PATCH 6.18 629/675] cxl/pci: Remove unnecessary CXL Endpoint handling helper functions Greg Kroah-Hartman
` (51 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:15 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Chris Mason, Jeff Layton,
Chuck Lever, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Chuck Lever <chuck.lever@oracle.com>
[ Upstream commit 18c1cc69886192e33536498289d26dba6894e3d5 ]
xdr_buf_to_bvec() returns a slot count even when the caller's bvec
budget is exhausted partway through the xdr_buf. Callers feed that
count into iov_iter_bvec() and continue as if the conversion had
succeeded, silently sending or writing fewer bytes than the data
length declares. For an NFS WRITE the server reports the truncated
transfer to the client as full success.
The overflow represents an internal invariant violation: a higher
layer reserved a bvec budget too small for the xdr_buf it then
asked the encoder to convert. That is a server-side fault, not a
media I/O failure and not a malformed client argument.
Change xdr_buf_to_bvec() to return a signed int and have the
overflow label return -ESERVERFAULT. Update the three callers to
detect the negative return and fail the request: nfsd_vfs_write()
folds the error into host_err, which nfserrno() translates to
nfserr_serverfault for the WRITE reply; svc_udp_sendto() and
svc_tcp_sendmsg() propagate the error out of the send path.
Reported-by: Chris Mason <clm@meta.com>
Fixes: 2eb2b9358181 ("SUNRPC: Convert svc_tcp_sendmsg to use bio_vecs directly")
Cc: stable@vger.kernel.org
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/nfsd/vfs.c | 8 +++++++-
include/linux/sunrpc/xdr.h | 4 ++--
net/sunrpc/svcsock.c | 14 ++++++++++++--
net/sunrpc/xdr.c | 11 ++++++-----
4 files changed, 27 insertions(+), 10 deletions(-)
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -1203,7 +1203,7 @@ nfsd_vfs_write(struct svc_rqst *rqstp, s
unsigned long exp_op_flags = 0;
unsigned int pflags = current->flags;
bool restore_flags = false;
- unsigned int nvecs;
+ int nvecs;
trace_nfsd_write_opened(rqstp, fhp, offset, *cnt);
@@ -1243,7 +1243,13 @@ nfsd_vfs_write(struct svc_rqst *rqstp, s
}
nvecs = xdr_buf_to_bvec(rqstp->rq_bvec, rqstp->rq_maxpages, payload);
+ if (nvecs < 0) {
+ host_err = nvecs;
+ goto out_nfserr;
+ }
+
iov_iter_bvec(&iter, ITER_SOURCE, rqstp->rq_bvec, nvecs, *cnt);
+
since = READ_ONCE(file->f_wb_err);
if (verf)
nfsd_copy_write_verifier(verf, nn);
--- a/include/linux/sunrpc/xdr.h
+++ b/include/linux/sunrpc/xdr.h
@@ -138,8 +138,8 @@ void xdr_terminate_string(const struct x
size_t xdr_buf_pagecount(const struct xdr_buf *buf);
int xdr_alloc_bvec(struct xdr_buf *buf, gfp_t gfp);
void xdr_free_bvec(struct xdr_buf *buf);
-unsigned int xdr_buf_to_bvec(struct bio_vec *bvec, unsigned int bvec_size,
- const struct xdr_buf *xdr);
+int xdr_buf_to_bvec(struct bio_vec *bvec, unsigned int bvec_size,
+ const struct xdr_buf *xdr);
int xdr_buf_to_sg(const struct xdr_buf *buf, unsigned int offset,
unsigned int len, struct scatterlist *sg, unsigned int nsg);
int xdr_buf_to_sg_alloc(const struct xdr_buf *buf, unsigned int offset,
--- a/net/sunrpc/svcsock.c
+++ b/net/sunrpc/svcsock.c
@@ -748,7 +748,7 @@ static int svc_udp_sendto(struct svc_rqs
.msg_flags = MSG_SPLICE_PAGES,
.msg_controllen = sizeof(buffer),
};
- unsigned int count;
+ int count;
int err;
svc_udp_release_ctxt(xprt, rqstp->rq_xprt_ctxt);
@@ -762,6 +762,10 @@ static int svc_udp_sendto(struct svc_rqs
goto out_notconn;
count = xdr_buf_to_bvec(svsk->sk_bvec, SUNRPC_MAX_UDP_SENDPAGES, xdr);
+ if (count < 0) {
+ err = count;
+ goto out_trace;
+ }
iov_iter_bvec(&msg.msg_iter, ITER_SOURCE, svsk->sk_bvec,
count, rqstp->rq_res.len);
@@ -773,6 +777,7 @@ static int svc_udp_sendto(struct svc_rqs
err = sock_sendmsg(svsk->sk_sock, &msg);
}
+out_trace:
trace_svcsock_udp_send(xprt, err);
mutex_unlock(&xprt->xpt_mutex);
@@ -1251,7 +1256,7 @@ static int svc_tcp_sendmsg(struct svc_so
struct msghdr msg = {
.msg_flags = MSG_SPLICE_PAGES,
};
- unsigned int count;
+ int count;
void *buf;
int ret;
@@ -1267,10 +1272,15 @@ static int svc_tcp_sendmsg(struct svc_so
count = xdr_buf_to_bvec(svsk->sk_bvec + 1, rqstp->rq_maxpages,
&rqstp->rq_res);
+ if (count < 0) {
+ ret = count;
+ goto out;
+ }
iov_iter_bvec(&msg.msg_iter, ITER_SOURCE, svsk->sk_bvec,
1 + count, sizeof(marker) + rqstp->rq_res.len);
ret = sock_sendmsg(svsk->sk_sock, &msg);
+out:
page_frag_free(buf);
return ret;
}
--- a/net/sunrpc/xdr.c
+++ b/net/sunrpc/xdr.c
@@ -139,13 +139,14 @@ xdr_free_bvec(struct xdr_buf *buf)
/**
* xdr_buf_to_bvec - Copy components of an xdr_buf into a bio_vec array
* @bvec: bio_vec array to populate
- * @bvec_size: element count of @bio_vec
+ * @bvec_size: element count of @bvec
* @xdr: xdr_buf to be copied
*
- * Returns the number of entries consumed in @bvec.
+ * Returns the number of entries consumed in @bvec on success, or
+ * -ESERVERFAULT when @xdr does not fit within @bvec_size entries.
*/
-unsigned int xdr_buf_to_bvec(struct bio_vec *bvec, unsigned int bvec_size,
- const struct xdr_buf *xdr)
+int xdr_buf_to_bvec(struct bio_vec *bvec, unsigned int bvec_size,
+ const struct xdr_buf *xdr)
{
const struct kvec *head = xdr->head;
const struct kvec *tail = xdr->tail;
@@ -187,7 +188,7 @@ unsigned int xdr_buf_to_bvec(struct bio_
bvec_overflow:
pr_warn_once("%s: bio_vec array overflow\n", __func__);
- return count;
+ return -ESERVERFAULT;
}
EXPORT_SYMBOL_GPL(xdr_buf_to_bvec);
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 629/675] cxl/pci: Remove unnecessary CXL Endpoint handling helper functions
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (627 preceding siblings ...)
2026-07-30 14:15 ` [PATCH 6.18 628/675] SUNRPC: Return an error from xdr_buf_to_bvec() on overflow Greg Kroah-Hartman
@ 2026-07-30 14:15 ` Greg Kroah-Hartman
2026-07-30 14:16 ` [PATCH 6.18 630/675] cxl/pci: Remove unnecessary CXL RCH " Greg Kroah-Hartman
` (50 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:15 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Terry Bowman,
Kuppuswamy Sathyanarayanan, Jonathan Cameron, Dave Jiang,
Joshua Hahn, Dan Williams, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Terry Bowman <terry.bowman@amd.com>
[ Upstream commit ca3d1a53e62093d17436abd447463da9c0f4e56b ]
The CXL driver's cxl_handle_endpoint_cor_ras()/cxl_handle_endpoint_ras()
are unnecessary helper functions used only for Endpoints. Remove these
functions as they are not common for all CXL devices and do not provide
value for EP handling.
Rename __cxl_handle_ras to cxl_handle_ras() and __cxl_handle_cor_ras()
to cxl_handle_cor_ras().
Signed-off-by: Terry Bowman <terry.bowman@amd.com>
Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Tested-by: Joshua Hahn <joshua.hahnjy@gmail.com>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Link: https://patch.msgid.link/20260114182055.46029-5-terry.bowman@amd.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Stable-dep-of: c268f949e219 ("cxl: Fix CXL_HEADERLOG_SIZE to match RAS Capability size")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/cxl/core/pci.c | 26 ++++++++------------------
1 file changed, 8 insertions(+), 18 deletions(-)
--- a/drivers/cxl/core/pci.c
+++ b/drivers/cxl/core/pci.c
@@ -711,8 +711,8 @@ err:
}
EXPORT_SYMBOL_NS_GPL(read_cdat_data, "CXL");
-static void __cxl_handle_cor_ras(struct cxl_dev_state *cxlds,
- void __iomem *ras_base)
+static void cxl_handle_cor_ras(struct cxl_dev_state *cxlds,
+ void __iomem *ras_base)
{
void __iomem *addr;
u32 status;
@@ -728,11 +728,6 @@ static void __cxl_handle_cor_ras(struct
}
}
-static void cxl_handle_endpoint_cor_ras(struct cxl_dev_state *cxlds)
-{
- return __cxl_handle_cor_ras(cxlds, cxlds->regs.ras);
-}
-
/* CXL spec rev3.0 8.2.4.16.1 */
static void header_log_copy(void __iomem *ras_base, u32 *log)
{
@@ -754,8 +749,8 @@ static void header_log_copy(void __iomem
* Log the state of the RAS status registers and prepare them to log the
* next error status. Return 1 if reset needed.
*/
-static bool __cxl_handle_ras(struct cxl_dev_state *cxlds,
- void __iomem *ras_base)
+static bool cxl_handle_ras(struct cxl_dev_state *cxlds,
+ void __iomem *ras_base)
{
u32 hl[CXL_HEADERLOG_SIZE_U32];
void __iomem *addr;
@@ -788,11 +783,6 @@ static bool __cxl_handle_ras(struct cxl_
return true;
}
-static bool cxl_handle_endpoint_ras(struct cxl_dev_state *cxlds)
-{
- return __cxl_handle_ras(cxlds, cxlds->regs.ras);
-}
-
#ifdef CONFIG_PCIEAER_CXL
static void cxl_dport_map_rch_aer(struct cxl_dport *dport)
@@ -871,13 +861,13 @@ EXPORT_SYMBOL_NS_GPL(cxl_dport_init_ras_
static void cxl_handle_rdport_cor_ras(struct cxl_dev_state *cxlds,
struct cxl_dport *dport)
{
- return __cxl_handle_cor_ras(cxlds, dport->regs.ras);
+ return cxl_handle_cor_ras(cxlds, dport->regs.ras);
}
static bool cxl_handle_rdport_ras(struct cxl_dev_state *cxlds,
struct cxl_dport *dport)
{
- return __cxl_handle_ras(cxlds, dport->regs.ras);
+ return cxl_handle_ras(cxlds, dport->regs.ras);
}
/*
@@ -974,7 +964,7 @@ void cxl_cor_error_detected(struct pci_d
if (cxlds->rcd)
cxl_handle_rdport_errors(cxlds);
- cxl_handle_endpoint_cor_ras(cxlds);
+ cxl_handle_cor_ras(cxlds, cxlds->regs.ras);
}
}
EXPORT_SYMBOL_NS_GPL(cxl_cor_error_detected, "CXL");
@@ -1003,7 +993,7 @@ pci_ers_result_t cxl_error_detected(stru
* chance the situation is recoverable dump the status of the RAS
* capability registers and bounce the active state of the memdev.
*/
- ue = cxl_handle_endpoint_ras(cxlds);
+ ue = cxl_handle_ras(cxlds, cxlds->regs.ras);
}
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 630/675] cxl/pci: Remove unnecessary CXL RCH handling helper functions
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (628 preceding siblings ...)
2026-07-30 14:15 ` [PATCH 6.18 629/675] cxl/pci: Remove unnecessary CXL Endpoint handling helper functions Greg Kroah-Hartman
@ 2026-07-30 14:16 ` Greg Kroah-Hartman
2026-07-30 14:16 ` [PATCH 6.18 631/675] cxl/pci: Remove CXL VH handling in CONFIG_PCIEAER_CXL conditional blocks from core/pci.c Greg Kroah-Hartman
` (49 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:16 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Terry Bowman, Alejandro Lucero,
Dave Jiang, Jonathan Cameron, Dan Williams, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Terry Bowman <terry.bowman@amd.com>
[ Upstream commit eb78ef4d6f0e51243c1ee117f801dbc503e886ab ]
cxl_handle_rdport_cor_ras() and cxl_handle_rdport_ras() are specific
to Restricted CXL Host (RCH) handling. Improve readability and
maintainability by replacing these and instead using the common
cxl_handle_cor_ras() and cxl_handle_ras() functions.
Signed-off-by: Terry Bowman <terry.bowman@amd.com>
Reviewed-by: Alejandro Lucero <alucerop@amd.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Link: https://patch.msgid.link/20260114182055.46029-6-terry.bowman@amd.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Stable-dep-of: c268f949e219 ("cxl: Fix CXL_HEADERLOG_SIZE to match RAS Capability size")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/cxl/core/pci.c | 16 ++--------------
1 file changed, 2 insertions(+), 14 deletions(-)
--- a/drivers/cxl/core/pci.c
+++ b/drivers/cxl/core/pci.c
@@ -858,18 +858,6 @@ void cxl_dport_init_ras_reporting(struct
}
EXPORT_SYMBOL_NS_GPL(cxl_dport_init_ras_reporting, "CXL");
-static void cxl_handle_rdport_cor_ras(struct cxl_dev_state *cxlds,
- struct cxl_dport *dport)
-{
- return cxl_handle_cor_ras(cxlds, dport->regs.ras);
-}
-
-static bool cxl_handle_rdport_ras(struct cxl_dev_state *cxlds,
- struct cxl_dport *dport)
-{
- return cxl_handle_ras(cxlds, dport->regs.ras);
-}
-
/*
* Copy the AER capability registers using 32 bit read accesses.
* This is necessary because RCRB AER capability is MMIO mapped. Clear the
@@ -939,9 +927,9 @@ static void cxl_handle_rdport_errors(str
pci_print_aer(pdev, severity, &aer_regs);
if (severity == AER_CORRECTABLE)
- cxl_handle_rdport_cor_ras(cxlds, dport);
+ cxl_handle_cor_ras(cxlds, dport->regs.ras);
else
- cxl_handle_rdport_ras(cxlds, dport);
+ cxl_handle_ras(cxlds, dport->regs.ras);
}
#else
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 631/675] cxl/pci: Remove CXL VH handling in CONFIG_PCIEAER_CXL conditional blocks from core/pci.c
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (629 preceding siblings ...)
2026-07-30 14:16 ` [PATCH 6.18 630/675] cxl/pci: Remove unnecessary CXL RCH " Greg Kroah-Hartman
@ 2026-07-30 14:16 ` Greg Kroah-Hartman
2026-07-30 14:16 ` [PATCH 6.18 632/675] cxl: Fix CXL_HEADERLOG_SIZE to match RAS Capability size Greg Kroah-Hartman
` (48 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:16 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Robert Richter, Joshua Hahn,
Jonathan Cameron, Dave Jiang, Alison Schofield, Terry Bowman,
Dan Williams, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Dave Jiang <dave.jiang@intel.com>
[ Upstream commit 7ff8b1d60881c5f97b5ae426e14d2822917d3b69 ]
Create new config CONFIG_CXL_RAS and put all CXL RAS items behind the
config. The config will depend on CPER and PCIE AER to build. Move the
related VH RAS code from core/pci.c to core/ras.c.
Restricted CXL host (RCH) RAS functions will be moved in a future patch.
Cc: Robert Richter <rrichter@amd.com>
Reviewed-by: Joshua Hahn <joshua.hahnjy@gmail.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Reviewed-by: Alison Schofield <alison.schofield@intel.com>
Co-developed-by: Terry Bowman <terry.bowman@amd.com>
Signed-off-by: Terry Bowman <terry.bowman@amd.com>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Link: https://patch.msgid.link/20260114182055.46029-8-terry.bowman@amd.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Stable-dep-of: c268f949e219 ("cxl: Fix CXL_HEADERLOG_SIZE to match RAS Capability size")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/cxl/Kconfig | 4
drivers/cxl/core/Makefile | 2
drivers/cxl/core/core.h | 31 +++++++
drivers/cxl/core/pci.c | 189 ----------------------------------------------
drivers/cxl/core/ras.c | 176 ++++++++++++++++++++++++++++++++++++++++++
drivers/cxl/cxl.h | 8 -
drivers/cxl/cxlpci.h | 16 +++
tools/testing/cxl/Kbuild | 2
8 files changed, 233 insertions(+), 195 deletions(-)
--- a/drivers/cxl/Kconfig
+++ b/drivers/cxl/Kconfig
@@ -234,4 +234,8 @@ config CXL_MCE
def_bool y
depends on X86_MCE && MEMORY_FAILURE
+config CXL_RAS
+ def_bool y
+ depends on ACPI_APEI_GHES && PCIEAER && CXL_PCI
+
endif
--- a/drivers/cxl/core/Makefile
+++ b/drivers/cxl/core/Makefile
@@ -14,9 +14,9 @@ cxl_core-y += pci.o
cxl_core-y += hdm.o
cxl_core-y += pmu.o
cxl_core-y += cdat.o
-cxl_core-y += ras.o
cxl_core-$(CONFIG_TRACING) += trace.o
cxl_core-$(CONFIG_CXL_REGION) += region.o
cxl_core-$(CONFIG_CXL_MCE) += mce.o
cxl_core-$(CONFIG_CXL_FEATURES) += features.o
cxl_core-$(CONFIG_CXL_EDAC_MEM_FEATURES) += edac.o
+cxl_core-$(CONFIG_CXL_RAS) += ras.o
--- a/drivers/cxl/core/core.h
+++ b/drivers/cxl/core/core.h
@@ -144,8 +144,39 @@ int cxl_pci_get_bandwidth(struct pci_dev
int cxl_port_get_switch_dport_bandwidth(struct cxl_port *port,
struct access_coordinate *c);
+#ifdef CONFIG_CXL_RAS
int cxl_ras_init(void);
void cxl_ras_exit(void);
+bool cxl_handle_ras(struct cxl_dev_state *cxlds, void __iomem *ras_base);
+void cxl_handle_cor_ras(struct cxl_dev_state *cxlds, void __iomem *ras_base);
+#else
+static inline int cxl_ras_init(void)
+{
+ return 0;
+}
+
+static inline void cxl_ras_exit(void)
+{
+}
+
+static inline bool cxl_handle_ras(struct cxl_dev_state *cxlds, void __iomem *ras_base)
+{
+ return false;
+}
+static inline void cxl_handle_cor_ras(struct cxl_dev_state *cxlds, void __iomem *ras_base) { }
+#endif /* CONFIG_CXL_RAS */
+
+/* Restricted CXL Host specific RAS functions */
+#ifdef CONFIG_CXL_RAS
+void cxl_dport_map_rch_aer(struct cxl_dport *dport);
+void cxl_disable_rch_root_ints(struct cxl_dport *dport);
+void cxl_handle_rdport_errors(struct cxl_dev_state *cxlds);
+#else
+static inline void cxl_dport_map_rch_aer(struct cxl_dport *dport) { }
+static inline void cxl_disable_rch_root_ints(struct cxl_dport *dport) { }
+static inline void cxl_handle_rdport_errors(struct cxl_dev_state *cxlds) { }
+#endif /* CONFIG_CXL_RAS */
+
int cxl_gpf_port_setup(struct cxl_dport *dport);
struct cxl_hdm;
--- a/drivers/cxl/core/pci.c
+++ b/drivers/cxl/core/pci.c
@@ -711,81 +711,8 @@ err:
}
EXPORT_SYMBOL_NS_GPL(read_cdat_data, "CXL");
-static void cxl_handle_cor_ras(struct cxl_dev_state *cxlds,
- void __iomem *ras_base)
-{
- void __iomem *addr;
- u32 status;
-
- if (!ras_base)
- return;
-
- addr = ras_base + CXL_RAS_CORRECTABLE_STATUS_OFFSET;
- status = readl(addr);
- if (status & CXL_RAS_CORRECTABLE_STATUS_MASK) {
- writel(status & CXL_RAS_CORRECTABLE_STATUS_MASK, addr);
- trace_cxl_aer_correctable_error(cxlds->cxlmd, status);
- }
-}
-
-/* CXL spec rev3.0 8.2.4.16.1 */
-static void header_log_copy(void __iomem *ras_base, u32 *log)
-{
- void __iomem *addr;
- u32 *log_addr;
- int i, log_u32_size = CXL_HEADERLOG_SIZE / sizeof(u32);
-
- addr = ras_base + CXL_RAS_HEADER_LOG_OFFSET;
- log_addr = log;
-
- for (i = 0; i < log_u32_size; i++) {
- *log_addr = readl(addr);
- log_addr++;
- addr += sizeof(u32);
- }
-}
-
-/*
- * Log the state of the RAS status registers and prepare them to log the
- * next error status. Return 1 if reset needed.
- */
-static bool cxl_handle_ras(struct cxl_dev_state *cxlds,
- void __iomem *ras_base)
-{
- u32 hl[CXL_HEADERLOG_SIZE_U32];
- void __iomem *addr;
- u32 status;
- u32 fe;
-
- if (!ras_base)
- return false;
-
- addr = ras_base + CXL_RAS_UNCORRECTABLE_STATUS_OFFSET;
- status = readl(addr);
- if (!(status & CXL_RAS_UNCORRECTABLE_STATUS_MASK))
- return false;
-
- /* If multiple errors, log header points to first error from ctrl reg */
- if (hweight32(status) > 1) {
- void __iomem *rcc_addr =
- ras_base + CXL_RAS_CAP_CONTROL_OFFSET;
-
- fe = BIT(FIELD_GET(CXL_RAS_CAP_CONTROL_FE_MASK,
- readl(rcc_addr)));
- } else {
- fe = status;
- }
-
- header_log_copy(ras_base, hl);
- trace_cxl_aer_uncorrectable_error(cxlds->cxlmd, status, fe, hl);
- writel(status & CXL_RAS_UNCORRECTABLE_STATUS_MASK, addr);
-
- return true;
-}
-
-#ifdef CONFIG_PCIEAER_CXL
-
-static void cxl_dport_map_rch_aer(struct cxl_dport *dport)
+#ifdef CONFIG_CXL_RAS
+void cxl_dport_map_rch_aer(struct cxl_dport *dport)
{
resource_size_t aer_phys;
struct device *host;
@@ -800,19 +727,7 @@ static void cxl_dport_map_rch_aer(struct
}
}
-static void cxl_dport_map_ras(struct cxl_dport *dport)
-{
- struct cxl_register_map *map = &dport->reg_map;
- struct device *dev = dport->dport_dev;
-
- if (!map->component_map.ras.valid)
- dev_dbg(dev, "RAS registers not found\n");
- else if (cxl_map_component_regs(map, &dport->regs.component,
- BIT(CXL_CM_CAP_CAP_ID_RAS)))
- dev_dbg(dev, "Failed to map RAS capability.\n");
-}
-
-static void cxl_disable_rch_root_ints(struct cxl_dport *dport)
+void cxl_disable_rch_root_ints(struct cxl_dport *dport)
{
void __iomem *aer_base = dport->regs.dport_aer;
u32 aer_cmd_mask, aer_cmd;
@@ -836,28 +751,6 @@ static void cxl_disable_rch_root_ints(st
writel(aer_cmd, aer_base + PCI_ERR_ROOT_COMMAND);
}
-/**
- * cxl_dport_init_ras_reporting - Setup CXL RAS report on this dport
- * @dport: the cxl_dport that needs to be initialized
- * @host: host device for devm operations
- */
-void cxl_dport_init_ras_reporting(struct cxl_dport *dport, struct device *host)
-{
- dport->reg_map.host = host;
- cxl_dport_map_ras(dport);
-
- if (dport->rch) {
- struct pci_host_bridge *host_bridge = to_pci_host_bridge(dport->dport_dev);
-
- if (!host_bridge->native_aer)
- return;
-
- cxl_dport_map_rch_aer(dport);
- cxl_disable_rch_root_ints(dport);
- }
-}
-EXPORT_SYMBOL_NS_GPL(cxl_dport_init_ras_reporting, "CXL");
-
/*
* Copy the AER capability registers using 32 bit read accesses.
* This is necessary because RCRB AER capability is MMIO mapped. Clear the
@@ -906,7 +799,7 @@ static bool cxl_rch_get_aer_severity(str
return false;
}
-static void cxl_handle_rdport_errors(struct cxl_dev_state *cxlds)
+void cxl_handle_rdport_errors(struct cxl_dev_state *cxlds)
{
struct pci_dev *pdev = to_pci_dev(cxlds->dev);
struct aer_capability_regs aer_regs;
@@ -931,82 +824,8 @@ static void cxl_handle_rdport_errors(str
else
cxl_handle_ras(cxlds, dport->regs.ras);
}
-
-#else
-static void cxl_handle_rdport_errors(struct cxl_dev_state *cxlds) { }
#endif
-void cxl_cor_error_detected(struct pci_dev *pdev)
-{
- struct cxl_dev_state *cxlds = pci_get_drvdata(pdev);
- struct device *dev = &cxlds->cxlmd->dev;
-
- scoped_guard(device, dev) {
- if (!dev->driver) {
- dev_warn(&pdev->dev,
- "%s: memdev disabled, abort error handling\n",
- dev_name(dev));
- return;
- }
-
- if (cxlds->rcd)
- cxl_handle_rdport_errors(cxlds);
-
- cxl_handle_cor_ras(cxlds, cxlds->regs.ras);
- }
-}
-EXPORT_SYMBOL_NS_GPL(cxl_cor_error_detected, "CXL");
-
-pci_ers_result_t cxl_error_detected(struct pci_dev *pdev,
- pci_channel_state_t state)
-{
- struct cxl_dev_state *cxlds = pci_get_drvdata(pdev);
- struct cxl_memdev *cxlmd = cxlds->cxlmd;
- struct device *dev = &cxlmd->dev;
- bool ue;
-
- scoped_guard(device, dev) {
- if (!dev->driver) {
- dev_warn(&pdev->dev,
- "%s: memdev disabled, abort error handling\n",
- dev_name(dev));
- return PCI_ERS_RESULT_DISCONNECT;
- }
-
- if (cxlds->rcd)
- cxl_handle_rdport_errors(cxlds);
- /*
- * A frozen channel indicates an impending reset which is fatal to
- * CXL.mem operation, and will likely crash the system. On the off
- * chance the situation is recoverable dump the status of the RAS
- * capability registers and bounce the active state of the memdev.
- */
- ue = cxl_handle_ras(cxlds, cxlds->regs.ras);
- }
-
-
- switch (state) {
- case pci_channel_io_normal:
- if (ue) {
- device_release_driver(dev);
- return PCI_ERS_RESULT_NEED_RESET;
- }
- return PCI_ERS_RESULT_CAN_RECOVER;
- case pci_channel_io_frozen:
- dev_warn(&pdev->dev,
- "%s: frozen state error detected, disable CXL.mem\n",
- dev_name(dev));
- device_release_driver(dev);
- return PCI_ERS_RESULT_NEED_RESET;
- case pci_channel_io_perm_failure:
- dev_warn(&pdev->dev,
- "failure state error detected, request disconnect\n");
- return PCI_ERS_RESULT_DISCONNECT;
- }
- return PCI_ERS_RESULT_NEED_RESET;
-}
-EXPORT_SYMBOL_NS_GPL(cxl_error_detected, "CXL");
-
static int cxl_flit_size(struct pci_dev *pdev)
{
if (cxl_pci_flit_256(pdev))
--- a/drivers/cxl/core/ras.c
+++ b/drivers/cxl/core/ras.c
@@ -5,6 +5,7 @@
#include <linux/aer.h>
#include <cxl/event.h>
#include <cxlmem.h>
+#include <cxlpci.h>
#include "trace.h"
static void cxl_cper_trace_corr_port_prot_err(struct pci_dev *pdev,
@@ -124,3 +125,178 @@ void cxl_ras_exit(void)
cxl_cper_unregister_prot_err_work(&cxl_cper_prot_err_work);
cancel_work_sync(&cxl_cper_prot_err_work);
}
+
+static void cxl_dport_map_ras(struct cxl_dport *dport)
+{
+ struct cxl_register_map *map = &dport->reg_map;
+ struct device *dev = dport->dport_dev;
+
+ if (!map->component_map.ras.valid)
+ dev_dbg(dev, "RAS registers not found\n");
+ else if (cxl_map_component_regs(map, &dport->regs.component,
+ BIT(CXL_CM_CAP_CAP_ID_RAS)))
+ dev_dbg(dev, "Failed to map RAS capability.\n");
+}
+
+/**
+ * cxl_dport_init_ras_reporting - Setup CXL RAS report on this dport
+ * @dport: the cxl_dport that needs to be initialized
+ * @host: host device for devm operations
+ */
+void cxl_dport_init_ras_reporting(struct cxl_dport *dport, struct device *host)
+{
+ dport->reg_map.host = host;
+ cxl_dport_map_ras(dport);
+
+ if (dport->rch) {
+ struct pci_host_bridge *host_bridge = to_pci_host_bridge(dport->dport_dev);
+
+ if (!host_bridge->native_aer)
+ return;
+
+ cxl_dport_map_rch_aer(dport);
+ cxl_disable_rch_root_ints(dport);
+ }
+}
+EXPORT_SYMBOL_NS_GPL(cxl_dport_init_ras_reporting, "CXL");
+
+void cxl_handle_cor_ras(struct cxl_dev_state *cxlds, void __iomem *ras_base)
+{
+ void __iomem *addr;
+ u32 status;
+
+ if (!ras_base)
+ return;
+
+ addr = ras_base + CXL_RAS_CORRECTABLE_STATUS_OFFSET;
+ status = readl(addr);
+ if (status & CXL_RAS_CORRECTABLE_STATUS_MASK) {
+ writel(status & CXL_RAS_CORRECTABLE_STATUS_MASK, addr);
+ trace_cxl_aer_correctable_error(cxlds->cxlmd, status);
+ }
+}
+
+/* CXL spec rev3.0 8.2.4.16.1 */
+static void header_log_copy(void __iomem *ras_base, u32 *log)
+{
+ void __iomem *addr;
+ u32 *log_addr;
+ int i, log_u32_size = CXL_HEADERLOG_SIZE / sizeof(u32);
+
+ addr = ras_base + CXL_RAS_HEADER_LOG_OFFSET;
+ log_addr = log;
+
+ for (i = 0; i < log_u32_size; i++) {
+ *log_addr = readl(addr);
+ log_addr++;
+ addr += sizeof(u32);
+ }
+}
+
+/*
+ * Log the state of the RAS status registers and prepare them to log the
+ * next error status. Return 1 if reset needed.
+ */
+bool cxl_handle_ras(struct cxl_dev_state *cxlds, void __iomem *ras_base)
+{
+ u32 hl[CXL_HEADERLOG_SIZE_U32];
+ void __iomem *addr;
+ u32 status;
+ u32 fe;
+
+ if (!ras_base)
+ return false;
+
+ addr = ras_base + CXL_RAS_UNCORRECTABLE_STATUS_OFFSET;
+ status = readl(addr);
+ if (!(status & CXL_RAS_UNCORRECTABLE_STATUS_MASK))
+ return false;
+
+ /* If multiple errors, log header points to first error from ctrl reg */
+ if (hweight32(status) > 1) {
+ void __iomem *rcc_addr =
+ ras_base + CXL_RAS_CAP_CONTROL_OFFSET;
+
+ fe = BIT(FIELD_GET(CXL_RAS_CAP_CONTROL_FE_MASK,
+ readl(rcc_addr)));
+ } else {
+ fe = status;
+ }
+
+ header_log_copy(ras_base, hl);
+ trace_cxl_aer_uncorrectable_error(cxlds->cxlmd, status, fe, hl);
+ writel(status & CXL_RAS_UNCORRECTABLE_STATUS_MASK, addr);
+
+ return true;
+}
+
+void cxl_cor_error_detected(struct pci_dev *pdev)
+{
+ struct cxl_dev_state *cxlds = pci_get_drvdata(pdev);
+ struct device *dev = &cxlds->cxlmd->dev;
+
+ scoped_guard(device, dev) {
+ if (!dev->driver) {
+ dev_warn(&pdev->dev,
+ "%s: memdev disabled, abort error handling\n",
+ dev_name(dev));
+ return;
+ }
+
+ if (cxlds->rcd)
+ cxl_handle_rdport_errors(cxlds);
+
+ cxl_handle_cor_ras(cxlds, cxlds->regs.ras);
+ }
+}
+EXPORT_SYMBOL_NS_GPL(cxl_cor_error_detected, "CXL");
+
+pci_ers_result_t cxl_error_detected(struct pci_dev *pdev,
+ pci_channel_state_t state)
+{
+ struct cxl_dev_state *cxlds = pci_get_drvdata(pdev);
+ struct cxl_memdev *cxlmd = cxlds->cxlmd;
+ struct device *dev = &cxlmd->dev;
+ bool ue;
+
+ scoped_guard(device, dev) {
+ if (!dev->driver) {
+ dev_warn(&pdev->dev,
+ "%s: memdev disabled, abort error handling\n",
+ dev_name(dev));
+ return PCI_ERS_RESULT_DISCONNECT;
+ }
+
+ if (cxlds->rcd)
+ cxl_handle_rdport_errors(cxlds);
+ /*
+ * A frozen channel indicates an impending reset which is fatal to
+ * CXL.mem operation, and will likely crash the system. On the off
+ * chance the situation is recoverable dump the status of the RAS
+ * capability registers and bounce the active state of the memdev.
+ */
+ ue = cxl_handle_ras(cxlds, cxlds->regs.ras);
+ }
+
+
+ switch (state) {
+ case pci_channel_io_normal:
+ if (ue) {
+ device_release_driver(dev);
+ return PCI_ERS_RESULT_NEED_RESET;
+ }
+ return PCI_ERS_RESULT_CAN_RECOVER;
+ case pci_channel_io_frozen:
+ dev_warn(&pdev->dev,
+ "%s: frozen state error detected, disable CXL.mem\n",
+ dev_name(dev));
+ device_release_driver(dev);
+ return PCI_ERS_RESULT_NEED_RESET;
+ case pci_channel_io_perm_failure:
+ dev_warn(&pdev->dev,
+ "failure state error detected, request disconnect\n");
+ return PCI_ERS_RESULT_DISCONNECT;
+ }
+ return PCI_ERS_RESULT_NEED_RESET;
+}
+EXPORT_SYMBOL_NS_GPL(cxl_error_detected, "CXL");
--- a/drivers/cxl/cxl.h
+++ b/drivers/cxl/cxl.h
@@ -781,14 +781,6 @@ struct cxl_dport *devm_cxl_add_rch_dport
struct device *dport_dev, int port_id,
resource_size_t rcrb);
-#ifdef CONFIG_PCIEAER_CXL
-void cxl_setup_parent_dport(struct device *host, struct cxl_dport *dport);
-void cxl_dport_init_ras_reporting(struct cxl_dport *dport, struct device *host);
-#else
-static inline void cxl_dport_init_ras_reporting(struct cxl_dport *dport,
- struct device *host) { }
-#endif
-
struct cxl_decoder *to_cxl_decoder(struct device *dev);
struct cxl_root_decoder *to_cxl_root_decoder(struct device *dev);
struct cxl_switch_decoder *to_cxl_switch_decoder(struct device *dev);
--- a/drivers/cxl/cxlpci.h
+++ b/drivers/cxl/cxlpci.h
@@ -130,7 +130,23 @@ static inline bool cxl_pci_flit_256(stru
int devm_cxl_port_enumerate_dports(struct cxl_port *port);
struct cxl_dev_state;
void read_cdat_data(struct cxl_port *port);
+
+#ifdef CONFIG_CXL_RAS
void cxl_cor_error_detected(struct pci_dev *pdev);
pci_ers_result_t cxl_error_detected(struct pci_dev *pdev,
pci_channel_state_t state);
+void cxl_dport_init_ras_reporting(struct cxl_dport *dport, struct device *host);
+#else
+static inline void cxl_cor_error_detected(struct pci_dev *pdev) { }
+
+static inline pci_ers_result_t cxl_error_detected(struct pci_dev *pdev,
+ pci_channel_state_t state)
+{
+ return PCI_ERS_RESULT_NONE;
+}
+
+static inline void cxl_dport_init_ras_reporting(struct cxl_dport *dport,
+ struct device *host) { }
+#endif
+
#endif /* __CXL_PCI_H__ */
--- a/tools/testing/cxl/Kbuild
+++ b/tools/testing/cxl/Kbuild
@@ -58,12 +58,12 @@ cxl_core-y += $(CXL_CORE_SRC)/pci.o
cxl_core-y += $(CXL_CORE_SRC)/hdm.o
cxl_core-y += $(CXL_CORE_SRC)/pmu.o
cxl_core-y += $(CXL_CORE_SRC)/cdat.o
-cxl_core-y += $(CXL_CORE_SRC)/ras.o
cxl_core-$(CONFIG_TRACING) += $(CXL_CORE_SRC)/trace.o
cxl_core-$(CONFIG_CXL_REGION) += $(CXL_CORE_SRC)/region.o
cxl_core-$(CONFIG_CXL_MCE) += $(CXL_CORE_SRC)/mce.o
cxl_core-$(CONFIG_CXL_FEATURES) += $(CXL_CORE_SRC)/features.o
cxl_core-$(CONFIG_CXL_EDAC_MEM_FEATURES) += $(CXL_CORE_SRC)/edac.o
+cxl_core-$(CONFIG_CXL_RAS) += $(CXL_CORE_SRC)/ras.o
cxl_core-y += config_check.o
cxl_core-y += cxl_core_test.o
cxl_core-y += cxl_core_exports.o
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 632/675] cxl: Fix CXL_HEADERLOG_SIZE to match RAS Capability size
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (630 preceding siblings ...)
2026-07-30 14:16 ` [PATCH 6.18 631/675] cxl/pci: Remove CXL VH handling in CONFIG_PCIEAER_CXL conditional blocks from core/pci.c Greg Kroah-Hartman
@ 2026-07-30 14:16 ` Greg Kroah-Hartman
2026-07-30 14:16 ` [PATCH 6.18 633/675] remoteproc: xlnx: Check remote core state Greg Kroah-Hartman
` (47 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:16 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Terry Bowman, Alison Schofield,
Dave Jiang, Ben Cheatham, Richard Cheng, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Terry Bowman <terry.bowman@amd.com>
[ Upstream commit c268f949e219f9e179558e836f457f6c5fbec416 ]
The CXL r4.0 8.2.4.17.7 RAS Capability Structure has total length 0x58
bytes (CXL_RAS_CAPABILITY_LENGTH); the Header Log occupies the trailing
64 bytes at offset 0x18. CXL_HEADERLOG_SIZE was defined as SZ_512,
eight times the actual on-device size.
header_log_copy() reads CXL_HEADERLOG_SIZE_U32 (128) dwords from the
RAS capability iomap, overrunning the 88-byte mapping by 448 bytes.
The cxl_aer_uncorrectable_error trace event memcpy()s CXL_HEADERLOG_SIZE
(512) bytes from its source. For the CPER caller the source is
struct cxl_ras_capability_regs::header_log[16] (64 bytes) embedded in a
stack-local cxl_cper_prot_err_work_data, so the memcpy reads 448 bytes
of kernel stack into the trace event ring buffer where userspace can
read it via tracefs.
Set CXL_HEADERLOG_SIZE to 64 and derive CXL_HEADERLOG_SIZE_U32 from it,
bringing all iomap readers into agreement on 16 dwords. Userspace tools
such as rasdaemon have grown a dependency on the buggy 512-byte (128 u32)
header_log layout in the cxl_aer_uncorrectable_error trace event. Add
CXL_HEADERLOG_TRACE_SIZE_U32 = 128 and use it for the trace event
__array and its memcpy to preserve that ABI. Both callers now pass a
zero-filled u32[CXL_HEADERLOG_TRACE_SIZE_U32] staging buffer with only
the first CXL_HEADERLOG_SIZE_U32 (16) entries populated from hardware;
the remaining 112 u32s are zero-padded, keeping the 512-byte trace ring
buffer layout intact.
[ dj: Replaced 64 with SZ_64 per RichardC ]
Fixes: 36f257e3b0ba ("acpi/ghes, cxl/pci: Process CXL CPER Protocol Errors")
Fixes: 2905cb5236cb ("cxl/pci: Add (hopeful) error handling support")
Cc: stable@vger.kernel.org
Reported-by: Sashiko
Signed-off-by: Terry Bowman <terry.bowman@amd.com>
Reviewed-by: Alison Schofield <alison.schofield@intel.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Reviewed-by: Ben Cheatham <benjamin.cheatham@amd.com>
Reviewed-by: Richard Cheng <icheng@nvidia.com>
Link: https://patch.msgid.link/20260605180610.2249458-1-terry.bowman@amd.com
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/cxl/core/ras.c | 27 ++++++++++++++++++++-------
drivers/cxl/core/trace.h | 24 ++++++++++++++++--------
drivers/cxl/cxl.h | 14 ++++++++++++--
3 files changed, 48 insertions(+), 17 deletions(-)
--- a/drivers/cxl/core/ras.c
+++ b/drivers/cxl/core/ras.c
@@ -8,6 +8,10 @@
#include <cxlpci.h>
#include "trace.h"
+/* Check that UCE header definition is maintained to keep ABI intact */
+static_assert(CXL_HEADERLOG_TRACE_SIZE_U32 == 128,
+ "rasdaemon ABI requires exactly 128 u32s");
+
static void cxl_cper_trace_corr_port_prot_err(struct pci_dev *pdev,
struct cxl_ras_capability_regs ras_cap)
{
@@ -19,6 +23,7 @@ static void cxl_cper_trace_corr_port_pro
static void cxl_cper_trace_uncorr_port_prot_err(struct pci_dev *pdev,
struct cxl_ras_capability_regs ras_cap)
{
+ u32 hl[CXL_HEADERLOG_TRACE_SIZE_U32] = {};
u32 status = ras_cap.uncor_status & ~ras_cap.uncor_mask;
u32 fe;
@@ -28,8 +33,8 @@ static void cxl_cper_trace_uncorr_port_p
else
fe = status;
- trace_cxl_port_aer_uncorrectable_error(&pdev->dev, status, fe,
- ras_cap.header_log);
+ memcpy(hl, ras_cap.header_log, CXL_HEADERLOG_SIZE);
+ trace_cxl_port_aer_uncorrectable_error(&pdev->dev, status, fe, hl);
}
static void cxl_cper_trace_corr_prot_err(struct cxl_memdev *cxlmd,
@@ -44,6 +49,7 @@ static void
cxl_cper_trace_uncorr_prot_err(struct cxl_memdev *cxlmd,
struct cxl_ras_capability_regs ras_cap)
{
+ u32 hl[CXL_HEADERLOG_TRACE_SIZE_U32] = {};
u32 status = ras_cap.uncor_status & ~ras_cap.uncor_mask;
u32 fe;
@@ -53,8 +59,15 @@ cxl_cper_trace_uncorr_prot_err(struct cx
else
fe = status;
- trace_cxl_aer_uncorrectable_error(cxlmd, status, fe,
- ras_cap.header_log);
+ /*
+ * ras_cap.header_log[] holds CXL_HEADERLOG_SIZE_U32 (16) hardware
+ * dwords. Copy them into the front of a zero-filled
+ * CXL_HEADERLOG_TRACE_SIZE_U32 (128) u32 staging buffer so the trace
+ * event memcpy sees a full 512-byte source and the userspace ABI
+ * (rasdaemon) is preserved.
+ */
+ memcpy(hl, ras_cap.header_log, CXL_HEADERLOG_SIZE);
+ trace_cxl_aer_uncorrectable_error(cxlmd, status, fe, hl);
}
static int match_memdev_by_parent(struct device *dev, const void *uport)
@@ -181,12 +194,12 @@ static void header_log_copy(void __iomem
{
void __iomem *addr;
u32 *log_addr;
- int i, log_u32_size = CXL_HEADERLOG_SIZE / sizeof(u32);
+ int i;
addr = ras_base + CXL_RAS_HEADER_LOG_OFFSET;
log_addr = log;
- for (i = 0; i < log_u32_size; i++) {
+ for (i = 0; i < CXL_HEADERLOG_SIZE_U32; i++) {
*log_addr = readl(addr);
log_addr++;
addr += sizeof(u32);
@@ -199,7 +212,7 @@ static void header_log_copy(void __iomem
*/
bool cxl_handle_ras(struct cxl_dev_state *cxlds, void __iomem *ras_base)
{
- u32 hl[CXL_HEADERLOG_SIZE_U32];
+ u32 hl[CXL_HEADERLOG_TRACE_SIZE_U32] = {};
void __iomem *addr;
u32 status;
u32 fe;
--- a/drivers/cxl/core/trace.h
+++ b/drivers/cxl/core/trace.h
@@ -56,7 +56,7 @@ TRACE_EVENT(cxl_port_aer_uncorrectable_e
__string(host, dev_name(dev->parent))
__field(u32, status)
__field(u32, first_error)
- __array(u32, header_log, CXL_HEADERLOG_SIZE_U32)
+ __array(u32, header_log, CXL_HEADERLOG_TRACE_SIZE_U32)
),
TP_fast_assign(
__assign_str(device);
@@ -64,10 +64,14 @@ TRACE_EVENT(cxl_port_aer_uncorrectable_e
__entry->status = status;
__entry->first_error = fe;
/*
- * Embed the 512B headerlog data for user app retrieval and
- * parsing, but no need to print this in the trace buffer.
+ * Embed headerlog data for user app retrieval and parsing,
+ * but no need to print in the trace buffer. Only
+ * CXL_HEADERLOG_SIZE_U32 (16) dwords are hardware data;
+ * the remaining entries preserve the 512-byte ABI layout
+ * rasdaemon depends on and are zero-filled by the caller.
*/
- memcpy(__entry->header_log, hl, CXL_HEADERLOG_SIZE);
+ memcpy(__entry->header_log, hl,
+ CXL_HEADERLOG_TRACE_SIZE_U32 * sizeof(u32));
),
TP_printk("device=%s host=%s status: '%s' first_error: '%s'",
__get_str(device), __get_str(host),
@@ -85,7 +89,7 @@ TRACE_EVENT(cxl_aer_uncorrectable_error,
__field(u64, serial)
__field(u32, status)
__field(u32, first_error)
- __array(u32, header_log, CXL_HEADERLOG_SIZE_U32)
+ __array(u32, header_log, CXL_HEADERLOG_TRACE_SIZE_U32)
),
TP_fast_assign(
__assign_str(memdev);
@@ -94,10 +98,14 @@ TRACE_EVENT(cxl_aer_uncorrectable_error,
__entry->status = status;
__entry->first_error = fe;
/*
- * Embed the 512B headerlog data for user app retrieval and
- * parsing, but no need to print this in the trace buffer.
+ * Embed headerlog data for user app retrieval and parsing,
+ * but no need to print in the trace buffer. Only
+ * CXL_HEADERLOG_SIZE_U32 (16) dwords are hardware data;
+ * the remaining entries preserve the 512-byte ABI layout
+ * rasdaemon depends on and are zero-filled by the caller.
*/
- memcpy(__entry->header_log, hl, CXL_HEADERLOG_SIZE);
+ memcpy(__entry->header_log, hl,
+ CXL_HEADERLOG_TRACE_SIZE_U32 * sizeof(u32));
),
TP_printk("memdev=%s host=%s serial=%lld: status: '%s' first_error: '%s'",
__get_str(memdev), __get_str(host), __entry->serial,
--- a/drivers/cxl/cxl.h
+++ b/drivers/cxl/cxl.h
@@ -148,8 +148,18 @@ static inline int ways_to_eiw(unsigned i
#define CXL_RAS_CAP_CONTROL_FE_MASK GENMASK(5, 0)
#define CXL_RAS_HEADER_LOG_OFFSET 0x18
#define CXL_RAS_CAPABILITY_LENGTH 0x58
-#define CXL_HEADERLOG_SIZE SZ_512
-#define CXL_HEADERLOG_SIZE_U32 SZ_512 / sizeof(u32)
+#define CXL_HEADERLOG_SIZE SZ_64
+#define CXL_HEADERLOG_SIZE_U32 (CXL_HEADERLOG_SIZE / sizeof(u32))
+
+/*
+ * The RAS UCE trace event header array was originally sized at SZ_512/sizeof(u32)
+ * = 128 u32s due to a bug. Userspace tools (rasdaemon) have grown a dependency
+ * on that 512-byte layout. Keep the trace array at 128 u32s to preserve the
+ * ABI; only CXL_HEADERLOG_SIZE_U32 (16) dwords are valid hardware data, the
+ * remainder are zero-filled.
+ */
+#define CXL_HEADERLOG_TRACE_SIZE SZ_512
+#define CXL_HEADERLOG_TRACE_SIZE_U32 (CXL_HEADERLOG_TRACE_SIZE / sizeof(u32))
/* CXL 2.0 8.2.8.1 Device Capabilities Array Register */
#define CXLDEV_CAP_ARRAY_OFFSET 0x0
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 633/675] remoteproc: xlnx: Check remote core state
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (631 preceding siblings ...)
2026-07-30 14:16 ` [PATCH 6.18 632/675] cxl: Fix CXL_HEADERLOG_SIZE to match RAS Capability size Greg Kroah-Hartman
@ 2026-07-30 14:16 ` Greg Kroah-Hartman
2026-07-30 14:16 ` [PATCH 6.18 634/675] mm/sparse-vmemmap: fix vmemmap accounting underflow Greg Kroah-Hartman
` (46 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:16 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Tanmay Shah, Beleswar Padhi,
Michal Simek, Mathieu Poirier, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Tanmay Shah <tanmay.shah@amd.com>
[ Upstream commit a48df51d23138388900995add2854cda4aa68e55 ]
The remote state is set to RPROC_DETACHED if the resource table is found
in the memory. However, this can be wrong if the remote is not started,
but firmware is still loaded in the memory. Use PM_GET_NODE_STATUS call
to the firmware to request the state of the RPU node. If the RPU is
actually out of reset and running, only then move the remote state to
RPROC_DETACHED, otherwise keep the remote state to RPROC_OFFLINE.
Signed-off-by: Tanmay Shah <tanmay.shah@amd.com>
Fixes: bca4b02ef92e ("remoteproc: xlnx: Add attach detach support")
Reviewed-by: Beleswar Padhi <b-padhi@ti.com>
Acked-by: Michal Simek <michal.simek@amd.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20260428221855.313752-1-tanmay.shah@amd.com
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
[ replaced the unavailable zynqmp_pm_get_node_status() helper with a direct zynqmp_pm_invoke_fn() call and exported it for modular builds. ]
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/firmware/xilinx/zynqmp.c | 1
drivers/remoteproc/xlnx_r5_remoteproc.c | 50 +++++++++++++++++++++++++-------
include/linux/firmware/xlnx-zynqmp.h | 13 ++++++++
3 files changed, 54 insertions(+), 10 deletions(-)
--- a/drivers/firmware/xilinx/zynqmp.c
+++ b/drivers/firmware/xilinx/zynqmp.c
@@ -461,6 +461,7 @@ int zynqmp_pm_invoke_fn(u32 pm_api_id, u
return do_fw_call(ret_payload, 8, smc_arg[0], smc_arg[1], smc_arg[2], smc_arg[3],
smc_arg[4], smc_arg[5], smc_arg[6], smc_arg[7]);
}
+EXPORT_SYMBOL_GPL(zynqmp_pm_invoke_fn);
static u32 pm_api_version;
static u32 pm_tz_version;
--- a/drivers/remoteproc/xlnx_r5_remoteproc.c
+++ b/drivers/remoteproc/xlnx_r5_remoteproc.c
@@ -959,16 +959,6 @@ static struct zynqmp_r5_core *zynqmp_r5_
goto free_rproc;
}
- /*
- * If firmware is already available in the memory then move rproc state
- * to DETACHED. Firmware can be preloaded via debugger or by any other
- * agent (processors) in the system.
- * If firmware isn't available in the memory and resource table isn't
- * found, then rproc state remains OFFLINE.
- */
- if (!zynqmp_r5_get_rsc_table_va(r5_core))
- r5_rproc->state = RPROC_DETACHED;
-
r5_core->rproc = r5_rproc;
return r5_core;
@@ -1221,6 +1211,7 @@ static int zynqmp_r5_core_init(struct zy
{
struct device *dev = cluster->dev;
struct zynqmp_r5_core *r5_core;
+ u32 payload[PAYLOAD_ARG_CNT];
int ret = -EINVAL, i;
r5_core = cluster->r5_cores[0];
@@ -1266,6 +1257,45 @@ static int zynqmp_r5_core_init(struct zy
ret = zynqmp_r5_get_sram_banks(r5_core);
if (ret)
return ret;
+
+ /*
+ * It is possible that firmware is loaded into the memory, but
+ * RPU (remote) is not running. In such case, RPU state will be
+ * moved to RPROC_DETACHED wrongfully. To avoid it first make
+ * sure RPU is power-on and out of reset before parsing for the
+ * resource table.
+ */
+ ret = zynqmp_pm_feature(PM_GET_NODE_STATUS);
+ if (ret < PM_API_VERSION_2)
+ ret = -EOPNOTSUPP;
+ else
+ ret = zynqmp_pm_invoke_fn(PM_GET_NODE_STATUS, payload, 1,
+ r5_core->pm_domain_id);
+ if (ret) {
+ dev_warn(r5_core->dev,
+ "failed to get rpu node status, err %d\n", ret);
+ continue;
+ }
+
+ /*
+ * If RPU state is power on and out of reset i.e. running, then
+ * assign RPROC_DETACHED state. If the RPU is not out of reset
+ * then do not attempt to attach to the remote processor.
+ */
+ if (payload[1] == PM_NODE_RUNNING) {
+ /*
+ * Not all the firmware that is running on the remote
+ * core is expected to have the resource table. The
+ * firmware might not use RPMsg at all, and in that case
+ * resource table becomes irrelevant. However, we still
+ * need to make sure that running core is not reported
+ * as offline. so do not decide remote core state based
+ * on the resource table availability
+ */
+ if (zynqmp_r5_get_rsc_table_va(r5_core))
+ dev_dbg(r5_core->dev, "rsc tbl not found\n");
+ r5_core->rproc->state = RPROC_DETACHED;
+ }
}
return 0;
--- a/include/linux/firmware/xlnx-zynqmp.h
+++ b/include/linux/firmware/xlnx-zynqmp.h
@@ -164,6 +164,7 @@ enum pm_api_cb_id {
enum pm_api_id {
PM_API_FEATURES = 0,
PM_GET_API_VERSION = 1,
+ PM_GET_NODE_STATUS = 3,
PM_REGISTER_NOTIFIER = 5,
PM_FORCE_POWERDOWN = 8,
PM_REQUEST_WAKEUP = 10,
@@ -545,6 +546,18 @@ enum pm_gem_config_type {
};
/**
+ * enum pm_node_status - Device node status provided by xilpm fw
+ * @PM_NODE_UNUSED: Device is not used
+ * @PM_NODE_RUNNING: Device is power-on and out of reset
+ * @PM_NODE_HALT: Device is power-on but in the reset state
+ */
+enum pm_node_status {
+ PM_NODE_UNUSED = 0,
+ PM_NODE_RUNNING = 1,
+ PM_NODE_HALT = 12,
+};
+
+/**
* struct zynqmp_pm_query_data - PM query data
* @qid: query ID
* @arg1: Argument 1 of query data
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 634/675] mm/sparse-vmemmap: fix vmemmap accounting underflow
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (632 preceding siblings ...)
2026-07-30 14:16 ` [PATCH 6.18 633/675] remoteproc: xlnx: Check remote core state Greg Kroah-Hartman
@ 2026-07-30 14:16 ` Greg Kroah-Hartman
2026-07-30 14:16 ` [PATCH 6.18 635/675] kho: make sure scratch size is always aligned by CMA_MIN_ALIGNMENT_BYTES Greg Kroah-Hartman
` (45 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:16 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Muchun Song,
Mike Rapoport (Microsoft), Oscar Salvador,
David Hildenbrand (Arm), Liam R. Howlett, Aneesh Kumar K.V,
Joao Martins, Lorenzo Stoakes, Madhavan Srinivasan,
Michael Ellerman, Michal Hocko, Nicholas Piggin,
Suren Baghdasaryan, Vlastimil Babka, Andrew Morton, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Muchun Song <songmuchun@bytedance.com>
[ Upstream commit c373f7f98e6ad591c85d40548cf8b6443be69311 ]
Patch series "mm: Fix vmemmap optimization accounting and initialization",
v8.
The series fixes several bugs in vmemmap optimization, mainly around
incorrect page accounting and memmap initialization in DAX and memory
hotplug paths. It also fixes pageblock migratetype initialization and
struct page initialization for ZONE_DEVICE compound pages.
Patches 1-4 fix vmemmap accounting issues. Patch 1 fixes an accounting
underflow in the section activation failure path by moving vmemmap page
accounting into the lower-level allocation and freeing helpers. Patch 2
fixes incorrect altmap passing in the memory hotplug error path. Patch 3
passes pgmap through memory deactivation paths so the teardown side can
determine whether vmemmap optimization was in effect. Patch 4 uses that
information to account the optimized DAX vmemmap size correctly.
Patches 5-6 fix initialization issues in mm/mm_init. One makes sure all
pageblocks in ZONE_DEVICE compound pages get their migratetype
initialized. The other fixes a case where DAX memory hotplug reuses an
unoptimized early-section memmap while compound_nr_pages() still assumes
vmemmap optimization, leaving tail struct pages uninitialized.
This patch (of 6):
In section_activate(), if populate_section_memmap() fails, the error
handling path calls section_deactivate() to roll back the state. This
causes a vmemmap accounting imbalance.
Since commit c3576889d87b ("mm: fix accounting of memmap pages"), memmap
pages are accounted for only after populate_section_memmap() succeeds.
However, the failure path unconditionally calls section_deactivate(),
which decreases the vmemmap count. Consequently, a failure in
populate_section_memmap() leads to an accounting underflow, incorrectly
reducing the system's tracked vmemmap usage.
Fix this more thoroughly by moving all accounting calls into the lower
level functions that actually perform the vmemmap allocation and freeing:
- populate_section_memmap() accounts for newly allocated vmemmap pages -
depopulate_section_memmap() unaccounts when vmemmap is freed
This ensures proper accounting in all code paths, including error handling
and early section cases.
Link: https://lore.kernel.org/20260428081855.1249045-1-songmuchun@bytedance.com
Link: https://lore.kernel.org/20260428081855.1249045-2-songmuchun@bytedance.com
Fixes: c3576889d87b ("mm: fix accounting of memmap pages")
Signed-off-by: Muchun Song <songmuchun@bytedance.com>
Acked-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Acked-by: Oscar Salvador <osalvador@suse.de>
Acked-by: David Hildenbrand (Arm) <david@kernel.org>
Acked-by: Liam R. Howlett <liam@infradead.org>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>
Cc: Joao Martins <joao.m.martins@oracle.com>
Cc: Lorenzo Stoakes <ljs@kernel.org>
Cc: Madhavan Srinivasan <maddy@linux.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@kernel.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
mm/sparse.c | 32 ++++++++++++++++++++++----------
1 file changed, 22 insertions(+), 10 deletions(-)
--- a/mm/sparse.c
+++ b/mm/sparse.c
@@ -670,7 +670,12 @@ static struct page * __meminit populate_
unsigned long nr_pages, int nid, struct vmem_altmap *altmap,
struct dev_pagemap *pgmap)
{
- return __populate_section_memmap(pfn, nr_pages, nid, altmap, pgmap);
+ struct page *page = __populate_section_memmap(pfn, nr_pages, nid, altmap,
+ pgmap);
+
+ memmap_pages_add(DIV_ROUND_UP(nr_pages * sizeof(struct page), PAGE_SIZE));
+
+ return page;
}
static void depopulate_section_memmap(unsigned long pfn, unsigned long nr_pages,
@@ -679,13 +684,17 @@ static void depopulate_section_memmap(un
unsigned long start = (unsigned long) pfn_to_page(pfn);
unsigned long end = start + nr_pages * sizeof(struct page);
+ memmap_pages_add(-1L * (DIV_ROUND_UP(nr_pages * sizeof(struct page), PAGE_SIZE)));
vmemmap_free(start, end, altmap);
}
+
static void free_map_bootmem(struct page *memmap)
{
unsigned long start = (unsigned long)memmap;
unsigned long end = (unsigned long)(memmap + PAGES_PER_SECTION);
+ memmap_boot_pages_add(-1L * (DIV_ROUND_UP(PAGES_PER_SECTION * sizeof(struct page),
+ PAGE_SIZE)));
vmemmap_free(start, end, NULL);
}
@@ -742,13 +751,18 @@ static struct page * __meminit populate_
unsigned long nr_pages, int nid, struct vmem_altmap *altmap,
struct dev_pagemap *pgmap)
{
- return kvmalloc_node(array_size(sizeof(struct page),
- PAGES_PER_SECTION), GFP_KERNEL, nid);
+ struct page *page = kvmalloc_node(array_size(sizeof(struct page),
+ PAGES_PER_SECTION), GFP_KERNEL, nid);
+
+ memmap_pages_add(DIV_ROUND_UP(nr_pages * sizeof(struct page), PAGE_SIZE));
+
+ return page;
}
static void depopulate_section_memmap(unsigned long pfn, unsigned long nr_pages,
struct vmem_altmap *altmap)
{
+ memmap_pages_add(-1L * (DIV_ROUND_UP(nr_pages * sizeof(struct page), PAGE_SIZE)));
kvfree(pfn_to_page(pfn));
}
@@ -761,6 +775,9 @@ static void free_map_bootmem(struct page
nr_pages = PAGE_ALIGN(PAGES_PER_SECTION * sizeof(struct page))
>> PAGE_SHIFT;
+ memmap_boot_pages_add(-1L * (DIV_ROUND_UP(PAGES_PER_SECTION * sizeof(struct page),
+ PAGE_SIZE)));
+
for (i = 0; i < nr_pages; i++, page++) {
type = bootmem_type(page);
@@ -854,14 +871,10 @@ static void section_deactivate(unsigned
* The memmap of early sections is always fully populated. See
* section_activate() and pfn_valid() .
*/
- if (!section_is_early) {
- memmap_pages_add(-1L * (DIV_ROUND_UP(nr_pages * sizeof(struct page), PAGE_SIZE)));
+ if (!section_is_early)
depopulate_section_memmap(pfn, nr_pages, altmap);
- } else if (memmap) {
- memmap_boot_pages_add(-1L * (DIV_ROUND_UP(nr_pages * sizeof(struct page),
- PAGE_SIZE)));
+ else if (memmap)
free_map_bootmem(memmap);
- }
if (empty)
ms->section_mem_map = (unsigned long)NULL;
@@ -906,7 +919,6 @@ static struct page * __meminit section_a
section_deactivate(pfn, nr_pages, altmap);
return ERR_PTR(-ENOMEM);
}
- memmap_pages_add(DIV_ROUND_UP(nr_pages * sizeof(struct page), PAGE_SIZE));
return memmap;
}
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 635/675] kho: make sure scratch size is always aligned by CMA_MIN_ALIGNMENT_BYTES
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (633 preceding siblings ...)
2026-07-30 14:16 ` [PATCH 6.18 634/675] mm/sparse-vmemmap: fix vmemmap accounting underflow Greg Kroah-Hartman
@ 2026-07-30 14:16 ` Greg Kroah-Hartman
2026-07-30 14:16 ` [PATCH 6.18 636/675] mtd: maps: vmu-flash: fix fault in unaligned fixup Greg Kroah-Hartman
` (44 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:16 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, stable, Pratyush Yadav (Google),
Pasha Tatashin, Mike Rapoport (Microsoft), Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: "Pratyush Yadav (Google)" <pratyush@kernel.org>
[ Upstream commit 0e39380a7316122e1b00012b3f3cd3e318b3e7d3 ]
When using scratch_scale, the scratch sizes are rounded up to
CMA_MIN_ALIGNMENT_BYTES since they will be released as MIGRATE_CMA. This
is not done when using fixed scratch sizes via command line. This can
result in user specifying a size which is not aligned, and thus kernel
releasing a pageblock that is only partially scratch.
Do the rounding up for both cases in scratch_size_update().
Fixes: 3dc92c311498 ("kexec: add Kexec HandOver (KHO) generation helpers")
Cc: stable@kernel.org
Signed-off-by: Pratyush Yadav (Google) <pratyush@kernel.org>
Link: https://patch.msgid.link/20260519160554.2713361-1-pratyush@kernel.org
Signed-off-by: Pasha Tatashin <pasha.tatashin@soleen.com>
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
kernel/kexec_handover.c | 32 +++++++++++++++++++++-----------
1 file changed, 21 insertions(+), 11 deletions(-)
--- a/kernel/kexec_handover.c
+++ b/kernel/kexec_handover.c
@@ -562,20 +562,30 @@ early_param("kho_scratch", kho_parse_scr
static void __init scratch_size_update(void)
{
- phys_addr_t size;
+ /*
+ * If fixed sizes are not provided via command line, calculate them
+ * now.
+ */
+ if (scratch_scale) {
+ phys_addr_t size;
- if (!scratch_scale)
- return;
+ size = memblock_reserved_kern_size(ARCH_LOW_ADDRESS_LIMIT,
+ NUMA_NO_NODE);
+ size = size * scratch_scale / 100;
+ scratch_size_lowmem = size;
- size = memblock_reserved_kern_size(ARCH_LOW_ADDRESS_LIMIT,
- NUMA_NO_NODE);
- size = size * scratch_scale / 100;
- scratch_size_lowmem = round_up(size, CMA_MIN_ALIGNMENT_BYTES);
+ size = memblock_reserved_kern_size(MEMBLOCK_ALLOC_ANYWHERE,
+ NUMA_NO_NODE);
+ size = size * scratch_scale / 100 - scratch_size_lowmem;
+ scratch_size_global = size;
+ }
- size = memblock_reserved_kern_size(MEMBLOCK_ALLOC_ANYWHERE,
- NUMA_NO_NODE);
- size = size * scratch_scale / 100 - scratch_size_lowmem;
- scratch_size_global = round_up(size, CMA_MIN_ALIGNMENT_BYTES);
+ /*
+ * Scratch areas are released as MIGRATE_CMA. Round them up to the right
+ * size.
+ */
+ scratch_size_lowmem = round_up(scratch_size_lowmem, CMA_MIN_ALIGNMENT_BYTES);
+ scratch_size_global = round_up(scratch_size_global, CMA_MIN_ALIGNMENT_BYTES);
}
static phys_addr_t __init scratch_size_node(int nid)
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 636/675] mtd: maps: vmu-flash: fix fault in unaligned fixup
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (634 preceding siblings ...)
2026-07-30 14:16 ` [PATCH 6.18 635/675] kho: make sure scratch size is always aligned by CMA_MIN_ALIGNMENT_BYTES Greg Kroah-Hartman
@ 2026-07-30 14:16 ` Greg Kroah-Hartman
2026-07-30 14:16 ` [PATCH 6.18 637/675] thunderbolt: Keep XDomain reference during the lifetime of a service Greg Kroah-Hartman
` (43 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:16 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Florian Fuchs, Miquel Raynal,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Florian Fuchs <fuchsfl@gmail.com>
[ Upstream commit 79d1661502c6e4b6f626185cef72cf2fa78116e1 ]
Use kzalloc_obj() / kzalloc_objs() to allocate the memcard structs,
instead of kmalloc_obj() / kmalloc_objs() to prevent access to
uninitialized data.
Fixes runtime error: Fault in unaligned fixup: 0000 [#1] at
mtd_get_fact_prot_info.
Fixes: 47a72688fae7 ("mtd: flash mapping support for Dreamcast VMU.")
Cc: stable@vger.kernel.org
Signed-off-by: Florian Fuchs <fuchsfl@gmail.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/mtd/maps/vmu-flash.c | 8 +++-----
1 file changed, 3 insertions(+), 5 deletions(-)
--- a/drivers/mtd/maps/vmu-flash.c
+++ b/drivers/mtd/maps/vmu-flash.c
@@ -610,7 +610,7 @@ static int vmu_connect(struct maple_devi
basic_flash_data = be32_to_cpu(mdev->devinfo.function_data[c - 1]);
- card = kmalloc(sizeof(struct memcard), GFP_KERNEL);
+ card = kzalloc_obj(struct memcard);
if (!card) {
error = -ENOMEM;
goto fail_nomem;
@@ -628,15 +628,13 @@ static int vmu_connect(struct maple_devi
* Not sure there are actually any multi-partition devices in the
* real world, but the hardware supports them, so, so will we
*/
- card->parts = kmalloc_array(card->partitions, sizeof(struct vmupart),
- GFP_KERNEL);
+ card->parts = kzalloc_objs(struct vmupart, card->partitions);
if (!card->parts) {
error = -ENOMEM;
goto fail_partitions;
}
- card->mtd = kmalloc_array(card->partitions, sizeof(struct mtd_info),
- GFP_KERNEL);
+ card->mtd = kzalloc_objs(struct mtd_info, card->partitions);
if (!card->mtd) {
error = -ENOMEM;
goto fail_mtd_info;
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 637/675] thunderbolt: Keep XDomain reference during the lifetime of a service
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (635 preceding siblings ...)
2026-07-30 14:16 ` [PATCH 6.18 636/675] mtd: maps: vmu-flash: fix fault in unaligned fixup Greg Kroah-Hartman
@ 2026-07-30 14:16 ` Greg Kroah-Hartman
2026-07-30 14:16 ` [PATCH 6.18 638/675] thunderbolt: Remove service debugfs entries during unregister Greg Kroah-Hartman
` (42 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:16 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Mika Westerberg, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Mika Westerberg <mika.westerberg@linux.intel.com>
[ Upstream commit 8b4060998637f06975fceee9b73845d8672d411e ]
This is needed because we release the service ID in tb_service_release()
and the ID array is owned by the parent XDomain.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Stable-dep-of: 2c5d2d3c3f70 ("thunderbolt: Prevent XDomain delayed work use-after-free on disconnect")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/thunderbolt/xdomain.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/thunderbolt/xdomain.c
+++ b/drivers/thunderbolt/xdomain.c
@@ -1012,6 +1012,7 @@ static void tb_service_release(struct de
ida_free(&xd->service_ids, svc->id);
kfree(svc->key);
kfree(svc);
+ tb_xdomain_put(xd);
}
const struct device_type tb_service_type = {
@@ -1120,7 +1121,7 @@ static void enumerate_services(struct tb
svc->id = id;
svc->dev.bus = &tb_bus_type;
svc->dev.type = &tb_service_type;
- svc->dev.parent = &xd->dev;
+ svc->dev.parent = get_device(&xd->dev);
dev_set_name(&svc->dev, "%s.%d", dev_name(&xd->dev), svc->id);
tb_service_debugfs_init(svc);
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 638/675] thunderbolt: Remove service debugfs entries during unregister
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (636 preceding siblings ...)
2026-07-30 14:16 ` [PATCH 6.18 637/675] thunderbolt: Keep XDomain reference during the lifetime of a service Greg Kroah-Hartman
@ 2026-07-30 14:16 ` Greg Kroah-Hartman
2026-07-30 14:16 ` [PATCH 6.18 639/675] thunderbolt: Remove XDomain from the bus without holding tb->lock Greg Kroah-Hartman
` (41 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:16 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Mika Westerberg, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Mika Westerberg <mika.westerberg@linux.intel.com>
[ Upstream commit 4d5fc3f4068568dfcb8cbe2852b4adc56394aa26 ]
We add them as part of the register path so to keep it symmetric remove
them as part of the unregister path. This also removes them even if the
service itself is not yet released (but is unregistered), thus allowing
new register with the same service name to happen.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Stable-dep-of: 2c5d2d3c3f70 ("thunderbolt: Prevent XDomain delayed work use-after-free on disconnect")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/thunderbolt/xdomain.c | 14 +++++++++++---
1 file changed, 11 insertions(+), 3 deletions(-)
--- a/drivers/thunderbolt/xdomain.c
+++ b/drivers/thunderbolt/xdomain.c
@@ -1008,7 +1008,6 @@ static void tb_service_release(struct de
struct tb_service *svc = container_of(dev, struct tb_service, dev);
struct tb_xdomain *xd = tb_service_parent(svc);
- tb_service_debugfs_remove(svc);
ida_free(&xd->service_ids, svc->id);
kfree(svc->key);
kfree(svc);
@@ -1023,6 +1022,14 @@ const struct device_type tb_service_type
};
EXPORT_SYMBOL_GPL(tb_service_type);
+static void __unregister_service(struct device *dev)
+{
+ struct tb_service *svc = tb_to_service(dev);
+
+ tb_service_debugfs_remove(svc);
+ device_unregister(&svc->dev);
+}
+
static int remove_missing_service(struct device *dev, void *data)
{
struct tb_xdomain *xd = data;
@@ -1034,7 +1041,7 @@ static int remove_missing_service(struct
if (!tb_property_find(xd->remote_properties, svc->key,
TB_PROPERTY_TYPE_DIRECTORY))
- device_unregister(dev);
+ __unregister_service(dev);
return 0;
}
@@ -1127,6 +1134,7 @@ static void enumerate_services(struct tb
tb_service_debugfs_init(svc);
if (device_register(&svc->dev)) {
+ tb_service_debugfs_remove(svc);
put_device(&svc->dev);
break;
}
@@ -2059,7 +2067,7 @@ void tb_xdomain_add(struct tb_xdomain *x
static int unregister_service(struct device *dev, void *data)
{
- device_unregister(dev);
+ __unregister_service(dev);
return 0;
}
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 639/675] thunderbolt: Remove XDomain from the bus without holding tb->lock
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (637 preceding siblings ...)
2026-07-30 14:16 ` [PATCH 6.18 638/675] thunderbolt: Remove service debugfs entries during unregister Greg Kroah-Hartman
@ 2026-07-30 14:16 ` Greg Kroah-Hartman
2026-07-30 14:16 ` [PATCH 6.18 640/675] thunderbolt: Prevent XDomain delayed work use-after-free on disconnect Greg Kroah-Hartman
` (40 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:16 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Mika Westerberg, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Mika Westerberg <mika.westerberg@linux.intel.com>
[ Upstream commit a8937f35cf39c39c64325aa84d0463d866850857 ]
Currently we call device_unregister() for services and the XDomain
itself with tb->lock held. This prevents the service drivers from
calling any functions that may take it. For this reason separate
removing the XDomain from the topology data structures (where we need
the lock) from unregistering the device from the bus (where remove
callbacks of the drivers are being called).
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Stable-dep-of: 2c5d2d3c3f70 ("thunderbolt: Prevent XDomain delayed work use-after-free on disconnect")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/thunderbolt/debugfs.c | 2 +
drivers/thunderbolt/domain.c | 30 +++++++++++++++++++++
drivers/thunderbolt/icm.c | 5 +++
drivers/thunderbolt/switch.c | 14 +++++++++
drivers/thunderbolt/tb.c | 59 ++++++++++++++++++++----------------------
drivers/thunderbolt/tb.h | 2 +
drivers/thunderbolt/xdomain.c | 53 +++++++++++++++++++++++--------------
7 files changed, 115 insertions(+), 50 deletions(-)
--- a/drivers/thunderbolt/debugfs.c
+++ b/drivers/thunderbolt/debugfs.c
@@ -1786,6 +1786,8 @@ static void margining_port_remove(struct
if (!port->usb4)
return;
+ if (!port->usb4->margining)
+ return;
snprintf(dir_name, sizeof(dir_name), "port%d", port->port);
parent = debugfs_lookup(dir_name, port->sw->debugfs_dir);
--- a/drivers/thunderbolt/domain.c
+++ b/drivers/thunderbolt/domain.c
@@ -850,6 +850,36 @@ int tb_domain_disconnect_all_paths(struc
return bus_for_each_dev(&tb_bus_type, NULL, tb, disconnect_xdomain);
}
+struct unregister_context {
+ const struct tb *tb;
+ int n;
+};
+
+static int unregister_unplugged_xdomain(struct device *dev, void *data)
+{
+ struct unregister_context *ctx = data;
+ struct tb_xdomain *xd;
+
+ xd = tb_to_xdomain(dev);
+ if (xd && xd->tb == ctx->tb && xd->is_unplugged) {
+ tb_xdomain_unregister(xd);
+ ctx->n++;
+ }
+ return 0;
+}
+
+int tb_domain_unregister_unplugged_xdomains(struct tb *tb)
+{
+ struct unregister_context ctx;
+
+ ctx.tb = tb_domain_get(tb);
+ ctx.n = 0;
+ bus_for_each_dev(&tb_bus_type, NULL, &ctx, unregister_unplugged_xdomain);
+ tb_domain_put(tb);
+
+ return ctx.n;
+}
+
int tb_domain_init(void)
{
int ret;
--- a/drivers/thunderbolt/icm.c
+++ b/drivers/thunderbolt/icm.c
@@ -738,6 +738,7 @@ static void remove_xdomain(struct tb_xdo
sw = tb_to_switch(xd->dev.parent);
tb_port_at(xd->route, sw)->xdomain = NULL;
+ xd->is_unplugged = true;
tb_xdomain_remove(xd);
}
@@ -1762,6 +1763,8 @@ static void icm_handle_notification(stru
kfree(n->pkg);
kfree(n);
+
+ tb_domain_unregister_unplugged_xdomains(tb);
}
static void icm_handle_event(struct tb *tb, enum tb_cfg_pkg_type type,
@@ -2112,6 +2115,8 @@ static void icm_rescan_work(struct work_
if (tb->root_switch)
icm_free_unplugged_children(tb->root_switch);
mutex_unlock(&tb->lock);
+
+ tb_domain_unregister_unplugged_xdomains(tb);
}
static void icm_complete(struct tb *tb)
--- a/drivers/thunderbolt/switch.c
+++ b/drivers/thunderbolt/switch.c
@@ -3603,6 +3603,20 @@ int tb_switch_resume(struct tb_switch *s
tb_port_warn(port,
"lost during suspend, disconnecting\n");
tb_sw_set_unplugged(port->remote->sw);
+ } else if (port->xdomain) {
+ /*
+ * If the user replaced the XDomain with
+ * another router, this will succeed in
+ * which case we must remove the XDomain
+ * before adding the new router.
+ */
+ err = tb_cfg_get_upstream_port(sw->tb->ctl,
+ port->xdomain->route);
+ if (err > 0) {
+ tb_port_warn(port,
+ "XDomain was disconnected\n");
+ port->xdomain->is_unplugged = true;
+ }
}
}
}
--- a/drivers/thunderbolt/tb.c
+++ b/drivers/thunderbolt/tb.c
@@ -2524,6 +2524,8 @@ put_sw:
out:
mutex_unlock(&tb->lock);
+ tb_domain_unregister_unplugged_xdomains(tb);
+
pm_runtime_mark_last_busy(&tb->dev);
pm_runtime_put_autosuspend(&tb->dev);
@@ -3110,6 +3112,24 @@ static void tb_restore_children(struct t
}
}
+static void tb_free_unplugged_xdomains(struct tb_switch *sw)
+{
+ struct tb_port *port;
+
+ tb_switch_for_each_port(sw, port) {
+ if (tb_is_upstream_port(port))
+ continue;
+ if (port->xdomain && port->xdomain->is_unplugged) {
+ tb_retimer_remove_all(port);
+ tb_xdomain_remove(port->xdomain);
+ tb_port_unconfigure_xdomain(port);
+ port->xdomain = NULL;
+ } else if (port->remote) {
+ tb_free_unplugged_xdomains(port->remote->sw);
+ }
+ }
+}
+
static int tb_resume_noirq(struct tb *tb)
{
struct tb_cm *tcm = tb_priv(tb);
@@ -3129,6 +3149,7 @@ static int tb_resume_noirq(struct tb *tb
tb_switch_resume(tb->root_switch, false);
tb_free_invalid_tunnels(tb);
tb_free_unplugged_children(tb->root_switch);
+ tb_free_unplugged_xdomains(tb->root_switch);
tb_restore_children(tb->root_switch);
/*
@@ -3171,28 +3192,6 @@ static int tb_resume_noirq(struct tb *tb
return 0;
}
-static int tb_free_unplugged_xdomains(struct tb_switch *sw)
-{
- struct tb_port *port;
- int ret = 0;
-
- tb_switch_for_each_port(sw, port) {
- if (tb_is_upstream_port(port))
- continue;
- if (port->xdomain && port->xdomain->is_unplugged) {
- tb_retimer_remove_all(port);
- tb_xdomain_remove(port->xdomain);
- tb_port_unconfigure_xdomain(port);
- port->xdomain = NULL;
- ret++;
- } else if (port->remote) {
- ret += tb_free_unplugged_xdomains(port->remote->sw);
- }
- }
-
- return ret;
-}
-
static int tb_freeze_noirq(struct tb *tb)
{
struct tb_cm *tcm = tb_priv(tb);
@@ -3212,14 +3211,14 @@ static int tb_thaw_noirq(struct tb *tb)
static void tb_complete(struct tb *tb)
{
/*
- * Release any unplugged XDomains and if there is a case where
+ * Unregister unplugged XDomains and if there is a case where
* another domain is swapped in place of unplugged XDomain we
* need to run another rescan.
*/
- mutex_lock(&tb->lock);
- if (tb_free_unplugged_xdomains(tb->root_switch))
- tb_scan_switch(tb->root_switch);
- mutex_unlock(&tb->lock);
+ if (tb_domain_unregister_unplugged_xdomains(tb)) {
+ scoped_guard(mutex, &tb->lock)
+ tb_scan_switch(tb->root_switch);
+ }
}
static int tb_runtime_suspend(struct tb *tb)
@@ -3246,11 +3245,11 @@ static void tb_remove_work(struct work_s
struct tb *tb = tcm_to_tb(tcm);
mutex_lock(&tb->lock);
- if (tb->root_switch) {
+ if (tb->root_switch)
tb_free_unplugged_children(tb->root_switch);
- tb_free_unplugged_xdomains(tb->root_switch);
- }
mutex_unlock(&tb->lock);
+
+ tb_free_unplugged_xdomains(tb->root_switch);
}
static int tb_runtime_resume(struct tb *tb)
--- a/drivers/thunderbolt/tb.h
+++ b/drivers/thunderbolt/tb.h
@@ -792,6 +792,7 @@ int tb_domain_disconnect_xdomain_paths(s
int transmit_path, int transmit_ring,
int receive_path, int receive_ring);
int tb_domain_disconnect_all_paths(struct tb *tb);
+int tb_domain_unregister_unplugged_xdomains(struct tb *tb);
static inline struct tb *tb_domain_get(struct tb *tb)
{
@@ -1262,6 +1263,7 @@ struct tb_xdomain *tb_xdomain_alloc(stru
const uuid_t *remote_uuid);
void tb_xdomain_add(struct tb_xdomain *xd);
void tb_xdomain_remove(struct tb_xdomain *xd);
+void tb_xdomain_unregister(struct tb_xdomain *xd);
struct tb_xdomain *tb_xdomain_find_by_link_depth(struct tb *tb, u8 link,
u8 depth);
--- a/drivers/thunderbolt/xdomain.c
+++ b/drivers/thunderbolt/xdomain.c
@@ -2072,41 +2072,54 @@ static int unregister_service(struct dev
}
/**
- * tb_xdomain_remove() - Remove XDomain from the bus
+ * tb_xdomain_remove() - Remove XDomain
* @xd: XDomain to remove
*
- * This will stop all ongoing configuration work and remove the XDomain
- * along with any services from the bus. When the last reference to @xd
- * is released the object will be released as well.
+ * This will stop all ongoing configuration work. XDomain is not removed
+ * from the bus if it was added. That needs to be done separately by
+ * calling tb_xdomain_unregister().
+ *
+ * Called with @tb->lock held.
*/
void tb_xdomain_remove(struct tb_xdomain *xd)
{
tb_xdomain_debugfs_remove(xd);
-
stop_handshake(xd);
-
- device_for_each_child_reverse(&xd->dev, xd, unregister_service);
-
tb_xdomain_link_exit(xd);
- /*
- * Undo runtime PM here explicitly because it is possible that
- * the XDomain was never added to the bus and thus device_del()
- * is not called for it (device_del() would handle this otherwise).
- */
- pm_runtime_disable(&xd->dev);
- pm_runtime_put_noidle(&xd->dev);
- pm_runtime_set_suspended(&xd->dev);
-
if (!device_is_registered(&xd->dev)) {
+ /*
+ * Undo runtime PM here explicitly because it is
+ * possible that the XDomain was never added to the bus
+ * and thus device_del() is not called for it
+ * (device_del() would handle this otherwise).
+ */
+ pm_runtime_disable(&xd->dev);
+ pm_runtime_put_noidle(&xd->dev);
+ pm_runtime_set_suspended(&xd->dev);
put_device(&xd->dev);
- } else {
- dev_info(&xd->dev, "host disconnected\n");
- device_unregister(&xd->dev);
}
}
/**
+ * tb_xdomain_unregister() - Unregister XDomain
+ * @xd: XDomain to unregister
+ *
+ * This will unregister the XDomain along with any services from the
+ * bus. When the last reference to @xd is released the object will be
+ * released as well.
+ */
+void tb_xdomain_unregister(struct tb_xdomain *xd)
+{
+ lockdep_assert_not_held(&xd->tb->lock);
+
+ device_for_each_child_reverse(&xd->dev, xd, unregister_service);
+
+ dev_info(&xd->dev, "host disconnected\n");
+ device_unregister(&xd->dev);
+}
+
+/**
* tb_xdomain_lane_bonding_enable() - Enable lane bonding on XDomain
* @xd: XDomain connection
*
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 640/675] thunderbolt: Prevent XDomain delayed work use-after-free on disconnect
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (638 preceding siblings ...)
2026-07-30 14:16 ` [PATCH 6.18 639/675] thunderbolt: Remove XDomain from the bus without holding tb->lock Greg Kroah-Hartman
@ 2026-07-30 14:16 ` Greg Kroah-Hartman
2026-07-30 14:16 ` [PATCH 6.18 641/675] dmaengine: dw-edma: Fix confusing cleanup.h syntax Greg Kroah-Hartman
` (39 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:16 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Michael Bommarito, Mika Westerberg,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Michael Bommarito <michael.bommarito@gmail.com>
[ Upstream commit 2c5d2d3c3f70cde2565d7b279b544893a2035842 ]
tb_xdp_handle_request() runs on system_wq and queues
xd->state_work via queue_delayed_work() in three request handlers:
PROPERTIES_CHANGED_REQUEST, UUID_REQUEST (via start_handshake),
and LINK_STATE_CHANGE_REQUEST. Similarly, update_xdomain() queues
xd->properties_changed_work when local properties change.
Concurrently, tb_xdomain_remove() calls stop_handshake() which does
cancel_delayed_work_sync() on both delayed works. Later,
tb_xdomain_unregister() calls device_unregister() which eventually
frees the xdomain. Since commit 559c1e1e0134 ("thunderbolt: Run
tb_xdp_handle_request() in system workqueue") moved the request
handler off tb->wq, the handler and the remove path are no longer
serialized. If queue_delayed_work() executes after
cancel_delayed_work_sync() but before the xdomain is freed, the
delayed work fires on a freed object.
Add xd->removing that tb_xdomain_remove() sets under xd->lock
before calling stop_handshake(). Each external queue site holds
the same lock and checks removing before calling
queue_delayed_work(). This provides the mutual exclusion needed:
either the queue site acquires the lock first and queues work that
the subsequent cancel will see, or the remove path acquires the
lock first and the queue site observes removing == true and skips
the queue.
Fixes: 559c1e1e0134 ("thunderbolt: Run tb_xdp_handle_request() in system workqueue")
Cc: stable@vger.kernel.org
Assisted-by: Claude:claude-opus-4-7
Signed-off-by: Michael Bommarito <michael.bommarito@gmail.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/thunderbolt/xdomain.c | 26 +++++++++++++-------------
1 file changed, 13 insertions(+), 13 deletions(-)
--- a/drivers/thunderbolt/xdomain.c
+++ b/drivers/thunderbolt/xdomain.c
@@ -909,6 +909,19 @@ void tb_unregister_service_driver(struct
}
EXPORT_SYMBOL_GPL(tb_unregister_service_driver);
+static int update_xdomain(struct device *dev, void *data)
+{
+ struct tb_xdomain *xd;
+
+ xd = tb_to_xdomain(dev);
+ if (xd) {
+ queue_delayed_work(xd->tb->wq, &xd->properties_changed_work,
+ msecs_to_jiffies(50));
+ }
+
+ return 0;
+}
+
static ssize_t key_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
@@ -2500,19 +2513,6 @@ bool tb_xdomain_handle_request(struct tb
return ret > 0;
}
-static int update_xdomain(struct device *dev, void *data)
-{
- struct tb_xdomain *xd;
-
- xd = tb_to_xdomain(dev);
- if (xd) {
- queue_delayed_work(xd->tb->wq, &xd->properties_changed_work,
- msecs_to_jiffies(50));
- }
-
- return 0;
-}
-
static void update_all_xdomains(void)
{
bus_for_each_dev(&tb_bus_type, NULL, NULL, update_xdomain);
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 641/675] dmaengine: dw-edma: Fix confusing cleanup.h syntax
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (639 preceding siblings ...)
2026-07-30 14:16 ` [PATCH 6.18 640/675] thunderbolt: Prevent XDomain delayed work use-after-free on disconnect Greg Kroah-Hartman
@ 2026-07-30 14:16 ` Greg Kroah-Hartman
2026-07-30 14:16 ` [PATCH 6.18 642/675] dmaengine: dw-edma-pcie: Reject devices without driver data Greg Kroah-Hartman
` (38 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:16 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Krzysztof Kozlowski,
Manivannan Sadhasivam, Vinod Koul, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
[ Upstream commit f9ef8dedee34e2d7828d5a6a0643cd969aaa8437 ]
Initializing automatic __free variables to NULL without need (e.g.
branches with different allocations), followed by actual allocation is
in contrary to explicit coding rules guiding cleanup.h:
"Given that the "__free(...) = NULL" pattern for variables defined at
the top of the function poses this potential interdependency problem the
recommendation is to always define and assign variables in one statement
and not group variable definitions at the top of the function when
__free() is used."
Code does not have a bug, but is less readable and uses discouraged
coding practice, so fix that by moving declaration to the place of
assignment.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Reviewed-by: Manivannan Sadhasivam <mani@kernel.org>
Link: https://patch.msgid.link/20251208020729.4654-2-krzysztof.kozlowski@oss.qualcomm.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Stable-dep-of: 11d7cfe0c119 ("dmaengine: dw-edma-pcie: Reject devices without driver data")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/dma/dw-edma/dw-edma-pcie.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/dma/dw-edma/dw-edma-pcie.c
+++ b/drivers/dma/dw-edma/dw-edma-pcie.c
@@ -161,13 +161,13 @@ static int dw_edma_pcie_probe(struct pci
const struct pci_device_id *pid)
{
struct dw_edma_pcie_data *pdata = (void *)pid->driver_data;
- struct dw_edma_pcie_data *vsec_data __free(kfree) = NULL;
struct device *dev = &pdev->dev;
struct dw_edma_chip *chip;
int err, nr_irqs;
int i, mask;
- vsec_data = kmalloc(sizeof(*vsec_data), GFP_KERNEL);
+ struct dw_edma_pcie_data *vsec_data __free(kfree) =
+ kmalloc(sizeof(*vsec_data), GFP_KERNEL);
if (!vsec_data)
return -ENOMEM;
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 642/675] dmaengine: dw-edma-pcie: Reject devices without driver data
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (640 preceding siblings ...)
2026-07-30 14:16 ` [PATCH 6.18 641/675] dmaengine: dw-edma: Fix confusing cleanup.h syntax Greg Kroah-Hartman
@ 2026-07-30 14:16 ` Greg Kroah-Hartman
2026-07-30 14:16 ` [PATCH 6.18 643/675] ovl: use linked upper dentry in copy-up tmpfile Greg Kroah-Hartman
` (37 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:16 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Koichiro Den, Frank Li, Vinod Koul,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Koichiro Den <den@valinux.co.jp>
[ Upstream commit 11d7cfe0c119691b2dafbb699bbca90258c678aa ]
dw_edma_pcie_probe() treats the PCI device ID driver_data as the
template for the controller layout and copies it unconditionally. A
device bound dynamically via sysfs can match the driver without that
data, which leads to a NULL pointer dereference.
Reject such matches before enabling the device.
Fixes: 41aaff2a2ac0 ("dmaengine: Add Synopsys eDMA IP PCIe glue-logic")
Cc: stable@vger.kernel.org
Signed-off-by: Koichiro Den <den@valinux.co.jp>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Link: https://patch.msgid.link/20260521142153.2957432-3-den@valinux.co.jp
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/dma/dw-edma/dw-edma-pcie.c | 3 +++
1 file changed, 3 insertions(+)
--- a/drivers/dma/dw-edma/dw-edma-pcie.c
+++ b/drivers/dma/dw-edma/dw-edma-pcie.c
@@ -166,6 +166,9 @@ static int dw_edma_pcie_probe(struct pci
int err, nr_irqs;
int i, mask;
+ if (!pdata)
+ return -ENODEV;
+
struct dw_edma_pcie_data *vsec_data __free(kfree) =
kmalloc(sizeof(*vsec_data), GFP_KERNEL);
if (!vsec_data)
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 643/675] ovl: use linked upper dentry in copy-up tmpfile
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (641 preceding siblings ...)
2026-07-30 14:16 ` [PATCH 6.18 642/675] dmaengine: dw-edma-pcie: Reject devices without driver data Greg Kroah-Hartman
@ 2026-07-30 14:16 ` Greg Kroah-Hartman
2026-07-30 14:16 ` [PATCH 6.18 644/675] accel/amdxdna: reject command submission on devices without a submit op Greg Kroah-Hartman
` (36 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:16 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Souvik Banerjee, Amir Goldstein,
Miklos Szeredi, Christian Brauner (Amutable), Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Souvik Banerjee <souvik@amlalabs.com>
[ Upstream commit e348eecd4d8fa8d18a5157ff59f7be1dc59c5928 ]
ovl_copy_up_tmpfile() stores the disconnected O_TMPFILE dentry as the
overlay's upper dentry reference via ovl_inode_update(). vfs_tmpfile()
allocated this dentry via d_alloc(parentpath->dentry, &slash_name), so
d_name is "/" and d_parent is c->workdir. Local upper filesystems
(ext4, btrfs, xfs, ...) immediately rename it to "#<inum>" via
d_mark_tmpfile() inside their ->tmpfile() op; FUSE and virtiofs do
not, so both fields stay that way. Neither identifies the destination
directory and filename where ovl_do_link() actually linked the file.
When the upper filesystem implements ->d_revalidate() (e.g. FUSE or
virtiofs), ovl_revalidate_real() calls it with the dentry's parent
inode and a snapshot of d_name. The server tries to look up "/" inside
c->workdir, fails, and overlayfs reports -ESTALE.
This causes persistent ESTALE errors for any file that was copied up via
the tmpfile path, breaking dpkg, apt, and other tools that do
rename-over-existing on overlayfs with a FUSE/virtiofs upper.
Before commit 6b52243f633e ("ovl: fold copy-up helpers into callers"),
the tmpfile copy-up path used a dedicated helper ovl_link_tmpfile()
that captured the linked destination dentry returned by ovl_do_link():
err = ovl_do_link(temp, udir, upper);
...
if (!err)
*newdentry = dget(upper);
and published it via ovl_inode_update(d_inode(c->dentry), newdentry).
The fold inlined ovl_do_link() into ovl_copy_up_tmpfile() but dropped
the dget(upper) capture, and rewrote the publish line as
ovl_inode_update(d_inode(c->dentry), dget(temp)) — where temp is the
disconnected O_TMPFILE dentry.
Fix by keeping a reference to the linked destination dentry after
ovl_do_link() succeeds, and publishing that dentry at the existing
ovl_inode_update() call site. The non-tmpfile/workdir path continues to
publish the renamed temporary dentry.
Reproducer:
- Mount overlayfs with virtiofs (or a FUSE fs whose server advertises
FUSE_TMPFILE) as upper
- Run: dpkg -i <any .deb>
- Observe: "error installing new file '...': Stale file handle"
Fixes: 6b52243f633e ("ovl: fold copy-up helpers into callers")
Cc: stable@vger.kernel.org # v4.20+
Signed-off-by: Souvik Banerjee <souvik@amlalabs.com>
Link: https://patch.msgid.link/20260501232735.2610824-1-souvik@amlalabs.com
Reviewed-by: Amir Goldstein <amir73il@gmail.com>
Reviewed-by: Miklos Szeredi <mszeredi@redhat.com>
Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>
[ adapted scoped credential and creation helpers to explicit credential, locking, lookup, and cleanup handling ]
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/overlayfs/copy_up.c | 12 ++++++++++--
1 file changed, 10 insertions(+), 2 deletions(-)
--- a/fs/overlayfs/copy_up.c
+++ b/fs/overlayfs/copy_up.c
@@ -864,7 +864,7 @@ static int ovl_copy_up_tmpfile(struct ov
{
struct ovl_fs *ofs = OVL_FS(c->dentry->d_sb);
struct inode *udir = d_inode(c->destdir);
- struct dentry *temp, *upper;
+ struct dentry *temp, *upper, *newdentry = NULL;
struct file *tmpfile;
struct ovl_cu_creds cc;
int err;
@@ -901,6 +901,14 @@ static int ovl_copy_up_tmpfile(struct ov
err = PTR_ERR(upper);
if (!IS_ERR(upper)) {
err = ovl_do_link(ofs, temp, udir, upper);
+ if (!err) {
+ /*
+ * Record the linked dentry -- not the disconnected
+ * O_TMPFILE dentry -- so that ->d_revalidate() on
+ * the upper fs sees the real parent/name.
+ */
+ newdentry = dget(upper);
+ }
dput(upper);
}
inode_unlock(udir);
@@ -916,7 +924,7 @@ static int ovl_copy_up_tmpfile(struct ov
if (!c->metacopy)
ovl_set_upperdata(d_inode(c->dentry));
- ovl_inode_update(d_inode(c->dentry), dget(temp));
+ ovl_inode_update(d_inode(c->dentry), newdentry);
out:
ovl_end_write(c->dentry);
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 644/675] accel/amdxdna: reject command submission on devices without a submit op
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (642 preceding siblings ...)
2026-07-30 14:16 ` [PATCH 6.18 643/675] ovl: use linked upper dentry in copy-up tmpfile Greg Kroah-Hartman
@ 2026-07-30 14:16 ` Greg Kroah-Hartman
2026-07-30 14:16 ` [PATCH 6.18 645/675] cred: add kernel_cred() helper Greg Kroah-Hartman
` (35 subsequent siblings)
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From: Greg Kroah-Hartman @ 2026-07-30 14:16 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Doruk Tan Ozturk, Lizhi Hou,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Doruk Tan Ozturk <doruk@0sec.ai>
[ Upstream commit 38953513d7313992676d4136cd425cdb70c6278e ]
amdxdna_cmd_submit() calls xdna->dev_info->ops->cmd_submit()
unconditionally, but only aie2_dev_ops defines that callback.
aie4_vf_ops (the AIE4 SR-IOV virtual function) does not, so a user
AMDXDNA_EXEC_CMD ioctl on an AIE4 device reaches a NULL function-pointer
call and oopses the kernel. AIE4 submits work through a mapped user queue
and doorbell, not this ioctl path.
Reject the submission early with -EOPNOTSUPP when the device provides no
cmd_submit op, so the shared EXEC ioctl is a clean no-op on such devices.
Fixes: aac243092b70 ("accel/amdxdna: Add command execution")
Cc: stable@vger.kernel.org
Found by 0sec automated security-research tooling (https://0sec.ai).
Assisted-by: 0sec:claude-opus-4-8
Signed-off-by: Doruk Tan Ozturk <doruk@0sec.ai>
Reviewed-by: Lizhi Hou <lizhi.hou@amd.com>
Signed-off-by: Lizhi Hou <lizhi.hou@amd.com>
Link: https://patch.msgid.link/20260713173030.87541-3-doruk@0sec.ai
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/accel/amdxdna/amdxdna_ctx.c | 4 ++++
1 file changed, 4 insertions(+)
--- a/drivers/accel/amdxdna/amdxdna_ctx.c
+++ b/drivers/accel/amdxdna/amdxdna_ctx.c
@@ -406,6 +406,10 @@ int amdxdna_cmd_submit(struct amdxdna_cl
int ret, idx;
XDNA_DBG(xdna, "Command BO hdl %d, Arg BO count %d", cmd_bo_hdl, arg_bo_cnt);
+
+ if (!xdna->dev_info->ops->cmd_submit)
+ return -EOPNOTSUPP;
+
job = kzalloc(struct_size(job, bos, arg_bo_cnt), GFP_KERNEL);
if (!job)
return -ENOMEM;
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 645/675] cred: add kernel_cred() helper
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (643 preceding siblings ...)
2026-07-30 14:16 ` [PATCH 6.18 644/675] accel/amdxdna: reject command submission on devices without a submit op Greg Kroah-Hartman
@ 2026-07-30 14:16 ` Greg Kroah-Hartman
2026-07-30 14:16 ` [PATCH 6.18 646/675] dm: avoid leaking the callers thread keyring via the table device file Greg Kroah-Hartman
` (34 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:16 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Jens Axboe, Christian Brauner,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Christian Brauner <brauner@kernel.org>
[ Upstream commit 4c7ceeb62d3330b6fb2b549ae833a92c0f481f3e ]
Access kernel creds based off of init_task. This will let us avoid any
direct access to init_cred.
Link: https://patch.msgid.link/20251103-work-creds-init_cred-v1-2-cb3ec8711a6a@kernel.org
Reviewed-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Christian Brauner <brauner@kernel.org>
Stable-dep-of: 981ccd97f715 ("dm: avoid leaking the caller's thread keyring via the table device file")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
include/linux/cred.h | 7 +++++++
1 file changed, 7 insertions(+)
--- a/include/linux/cred.h
+++ b/include/linux/cred.h
@@ -20,6 +20,8 @@
struct cred;
struct inode;
+extern struct task_struct init_task;
+
/*
* COW Supplementary groups list
*/
@@ -156,6 +158,11 @@ extern struct cred *prepare_exec_creds(v
extern int commit_creds(struct cred *);
extern void abort_creds(struct cred *);
extern struct cred *prepare_kernel_cred(struct task_struct *);
+static inline const struct cred *kernel_cred(void)
+{
+ /* shut up sparse */
+ return rcu_dereference_raw(init_task.cred);
+}
extern int set_security_override(struct cred *, u32);
extern int set_security_override_from_ctx(struct cred *, const char *);
extern int set_create_files_as(struct cred *, struct inode *);
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 646/675] dm: avoid leaking the callers thread keyring via the table device file
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (644 preceding siblings ...)
2026-07-30 14:16 ` [PATCH 6.18 645/675] cred: add kernel_cred() helper Greg Kroah-Hartman
@ 2026-07-30 14:16 ` Greg Kroah-Hartman
2026-07-30 14:16 ` [PATCH 6.18 647/675] mmc: vub300: rename probe error labels Greg Kroah-Hartman
` (33 subsequent siblings)
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From: Greg Kroah-Hartman @ 2026-07-30 14:16 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Ingo Blechschmidt, Mikulas Patocka,
Ondrej Kozina, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Ingo Blechschmidt <iblech@speicherleck.de>
[ Upstream commit 981ccd97f7153d310dfa92a534525bbaf46752c2 ]
The refactoring in commit a28d893eb327 ("md: port block device access to file")
accidentally causes the caller's thread keyring to be kept alive long
beyond the caller's lifetime.
As a result, "cryptsetup luksSuspend" silently fails to wipe the
LUKS volume key from memory.
In detail: "cryptsetup luksOpen" uses its supposedly ephemeral thread
keyring to pass the volume key to the kernel. dm-crypt's
crypt_set_keyring_key() copies the key material into its own
crypt_config structure and then drops its own reference to the key in
the keyring with key_put().
With this fix, restoring pre-v6.9 behavior, the copy in the thread
keyring is then promptly garbage collected, such that exactly one copy
of the volume key remains. This single copy is correctly wiped from
memory on "cryptsetup luksSuspend".
Without this fix, the thread keyring and the volume key in it remains.
This second copy is only freed on "luksClose". "luksSuspend" neither
knows about this copy nor has any way to remove it, so the key remains
recoverable from RAM after a suspend that is documented to have wiped it.
This fix should not introduce new security problems, as the code is
anyway gated by CAP_SYS_ADMIN. The device-mapper core, not the calling
task, is the legitimate owner of this long-lived file.
Fixes: a28d893eb327 ("md: port block device access to file")
Closes: https://gitlab.com/cryptsetup/cryptsetup/-/work_items/993
Link: https://www.speicherleck.de/iblech/cryptsetup-luksSuspend-issue-reproduction/
Signed-off-by: Ingo Blechschmidt <iblech@speicherleck.de>
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Cc: stable@vger.kernel.org
Tested-by: Ondrej Kozina <okozina@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/md/dm.c | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -735,7 +735,16 @@ static struct table_device *open_table_d
return ERR_PTR(-ENOMEM);
refcount_set(&td->count, 1);
- bdev_file = bdev_file_open_by_dev(dev, mode, _dm_claim_ptr, NULL);
+ /*
+ * Open the backing device with kernel rather than caller
+ * credentials. Otherwise the caller's credentials would be
+ * pinned in bdev_file->f_cred until the table device is closed.
+ * That would keep the caller's thread keyring alive long beyond the
+ * lifetime of the caller, breaking userspace expectation (e.g.
+ * cryptsetup(8) leaking the LUKS volume key).
+ */
+ scoped_with_kernel_creds()
+ bdev_file = bdev_file_open_by_dev(dev, mode, _dm_claim_ptr, NULL);
if (IS_ERR(bdev_file)) {
r = PTR_ERR(bdev_file);
goto out_free_td;
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 647/675] mmc: vub300: rename probe error labels
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (645 preceding siblings ...)
2026-07-30 14:16 ` [PATCH 6.18 646/675] dm: avoid leaking the callers thread keyring via the table device file Greg Kroah-Hartman
@ 2026-07-30 14:16 ` Greg Kroah-Hartman
2026-07-30 14:16 ` [PATCH 6.18 648/675] mmc: vub300: fix use-after-free on probe failure Greg Kroah-Hartman
` (32 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:16 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Johan Hovold, Ulf Hansson,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Johan Hovold <johan@kernel.org>
[ Upstream commit 5b8b35d6f4fa758dd5e8ae18526ea1c73f6787e0 ]
Error labels should be named after what they do.
Rename the probe error labels.
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Stable-dep-of: a3b5f242997a ("mmc: vub300: fix use-after-free on probe failure")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/mmc/host/vub300.c | 18 ++++++++++--------
1 file changed, 10 insertions(+), 8 deletions(-)
--- a/drivers/mmc/host/vub300.c
+++ b/drivers/mmc/host/vub300.c
@@ -2115,19 +2115,19 @@ static int vub300_probe(struct usb_inter
command_out_urb = usb_alloc_urb(0, GFP_KERNEL);
if (!command_out_urb) {
retval = -ENOMEM;
- goto error0;
+ goto err_put_udev;
}
command_res_urb = usb_alloc_urb(0, GFP_KERNEL);
if (!command_res_urb) {
retval = -ENOMEM;
- goto error1;
+ goto err_free_out_urb;
}
/* this also allocates memory for our VUB300 mmc host device */
mmc = mmc_alloc_host(sizeof(*vub300), &udev->dev);
if (!mmc) {
retval = -ENOMEM;
dev_err(&udev->dev, "not enough memory for the mmc_host\n");
- goto error4;
+ goto err_free_res_urb;
}
/* MMC core transfer sizes tunable parameters */
mmc->caps = 0;
@@ -2344,10 +2344,11 @@ static int vub300_probe(struct usb_inter
interface_to_InterfaceNumber(interface));
retval = mmc_add_host(mmc);
if (retval)
- goto error6;
+ goto err_delete_timer;
return 0;
-error6:
+
+err_delete_timer:
timer_delete_sync(&vub300->inactivity_timer);
err_free_host:
mmc_free_host(mmc);
@@ -2355,12 +2356,13 @@ err_free_host:
* and hence also frees vub300
* which is contained at the end of struct mmc
*/
-error4:
+err_free_res_urb:
usb_free_urb(command_res_urb);
-error1:
+err_free_out_urb:
usb_free_urb(command_out_urb);
-error0:
+err_put_udev:
usb_put_dev(udev);
+
return retval;
}
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 648/675] mmc: vub300: fix use-after-free on probe failure
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (646 preceding siblings ...)
2026-07-30 14:16 ` [PATCH 6.18 647/675] mmc: vub300: rename probe error labels Greg Kroah-Hartman
@ 2026-07-30 14:16 ` Greg Kroah-Hartman
2026-07-30 14:16 ` [PATCH 6.18 649/675] fs/resctrl: Split L3 dependent parts out of __mon_event_count() Greg Kroah-Hartman
` (31 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:16 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Guangshuo Li, Johan Hovold,
Ulf Hansson, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Guangshuo Li <lgs201920130244@gmail.com>
[ Upstream commit a3b5f242997a3be7404112fd48784881560aea57 ]
The vub300 driver lifetime-manages its controller state using
vub300->kref, with vub300_delete() freeing the mmc host when the last
reference is dropped. The probe error path after the inactivity timer has
been armed still bypasses that lifetime rule, however, and falls through
to mmc_free_host() directly if mmc_add_host() fails.
The race window is between arming the inactivity timer and reaching the
probe error unwind after mmc_add_host() fails:
probe thread timer/workqueue
------------ ---------------
kref_init(&vub300->kref) ref = 1
kref_get(&vub300->kref) ref = 2, timer ref
add_timer(inactivity_timer) fires after one second
|
| race window
|<---------------------------------------------------->
|
mmc_add_host(mmc)
inactivity timer fires
vub300_queue_dead_work()
kref_get() ref = 3
queue_work(deadwork)
mmc_add_host() fails
timer_delete_sync()
mmc_free_host(mmc)
frees vub300
deadwork runs
use-after-free
The inactivity timeout is one second, so this would require
mmc_add_host() to both fail and take more than one second to do so. This
is unlikely to happen in practice, but the error path is still wrong.
timer_delete_sync() only waits for the timer callback itself. It does
not flush deadwork that the callback may already have queued. As a
result, queued deadwork can still hold a kref while the probe error path
directly frees the backing mmc host, including the vub300 storage.
Fix this by using the same lifetime mechanism as disconnect. Clear
vub300->interface so that the timer callback and any queued deadwork
return early and drop their references, then drop the initial probe
reference and return without falling through to err_free_host.
Fixes: 0613ad2401f8 ("mmc: vub300: fix return value check of mmc_add_host()")
Signed-off-by: Guangshuo Li <lgs201920130244@gmail.com>
Reviewed-by: Johan Hovold <johan@kernel.org>
Cc: stable@vger.kernel.org
Signed-off-by: Ulf Hansson <ulfh@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/mmc/host/vub300.c | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)
--- a/drivers/mmc/host/vub300.c
+++ b/drivers/mmc/host/vub300.c
@@ -2344,12 +2344,16 @@ static int vub300_probe(struct usb_inter
interface_to_InterfaceNumber(interface));
retval = mmc_add_host(mmc);
if (retval)
- goto err_delete_timer;
+ goto err_stop_io;
return 0;
-err_delete_timer:
- timer_delete_sync(&vub300->inactivity_timer);
+err_stop_io:
+ vub300->interface = NULL;
+ kref_put(&vub300->kref, vub300_delete);
+
+ return retval;
+
err_free_host:
mmc_free_host(mmc);
/*
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 649/675] fs/resctrl: Split L3 dependent parts out of __mon_event_count()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (647 preceding siblings ...)
2026-07-30 14:16 ` [PATCH 6.18 648/675] mmc: vub300: fix use-after-free on probe failure Greg Kroah-Hartman
@ 2026-07-30 14:16 ` Greg Kroah-Hartman
2026-07-30 14:16 ` [PATCH 6.18 650/675] x86,fs/resctrl: Rename struct rdt_mon_domain and rdt_hw_mon_domain Greg Kroah-Hartman
` (30 subsequent siblings)
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From: Greg Kroah-Hartman @ 2026-07-30 14:16 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Reinette Chatre, Tony Luck,
Borislav Petkov (AMD), Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Tony Luck <tony.luck@intel.com>
[ Upstream commit ad5c2ff75e0c53d2588dfc10eb87458e759b6bbe ]
Carve out the L3 resource specific event reading code into a separate helper
to support reading event data from a new monitoring resource.
Suggested-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Reinette Chatre <reinette.chatre@intel.com>
Link: https://lore.kernel.org/20251217172121.12030-1-tony.luck@intel.com
Stable-dep-of: 52fce648607e ("fs/resctrl: Fix use-after-free during unmount")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/resctrl/monitor.c | 13 ++++++++++++-
1 file changed, 12 insertions(+), 1 deletion(-)
--- a/fs/resctrl/monitor.c
+++ b/fs/resctrl/monitor.c
@@ -418,7 +418,7 @@ static void mbm_cntr_free(struct rdt_mon
memset(&d->cntr_cfg[cntr_id], 0, sizeof(*d->cntr_cfg));
}
-static int __mon_event_count(struct rdtgroup *rdtgrp, struct rmid_read *rr)
+static int __l3_mon_event_count(struct rdtgroup *rdtgrp, struct rmid_read *rr)
{
int cpu = smp_processor_id();
u32 closid = rdtgrp->closid;
@@ -499,6 +499,17 @@ static int __mon_event_count(struct rdtg
return ret;
}
+static int __mon_event_count(struct rdtgroup *rdtgrp, struct rmid_read *rr)
+{
+ switch (rr->r->rid) {
+ case RDT_RESOURCE_L3:
+ return __l3_mon_event_count(rdtgrp, rr);
+ default:
+ rr->err = -EINVAL;
+ return -EINVAL;
+ }
+}
+
/*
* mbm_bw_count() - Update bw count from values previously read by
* __mon_event_count().
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 650/675] x86,fs/resctrl: Rename struct rdt_mon_domain and rdt_hw_mon_domain
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (648 preceding siblings ...)
2026-07-30 14:16 ` [PATCH 6.18 649/675] fs/resctrl: Split L3 dependent parts out of __mon_event_count() Greg Kroah-Hartman
@ 2026-07-30 14:16 ` Greg Kroah-Hartman
2026-07-30 14:16 ` [PATCH 6.18 651/675] x86,fs/resctrl: Rename some L3 specific functions Greg Kroah-Hartman
` (29 subsequent siblings)
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From: Greg Kroah-Hartman @ 2026-07-30 14:16 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Tony Luck, Borislav Petkov (AMD),
Reinette Chatre, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Tony Luck <tony.luck@intel.com>
[ Upstream commit 4bc3ef46ff41d5e7ba557e56e9cd2031527cd7f8 ]
The upcoming telemetry event monitoring is not tied to the L3 resource and
will have a new domain structure.
Rename the L3 resource specific domain data structures to include "l3_"
in their names to avoid confusion between the different resource specific
domain structures:
rdt_mon_domain -> rdt_l3_mon_domain
rdt_hw_mon_domain -> rdt_hw_l3_mon_domain
No functional change.
Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Reinette Chatre <reinette.chatre@intel.com>
Link: https://lore.kernel.org/20251217172121.12030-1-tony.luck@intel.com
Stable-dep-of: 52fce648607e ("fs/resctrl: Fix use-after-free during unmount")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/x86/kernel/cpu/resctrl/core.c | 16 ++++----
arch/x86/kernel/cpu/resctrl/internal.h | 16 ++++----
arch/x86/kernel/cpu/resctrl/monitor.c | 34 +++++++++---------
fs/resctrl/ctrlmondata.c | 6 +--
fs/resctrl/internal.h | 12 +++---
fs/resctrl/monitor.c | 62 ++++++++++++++++-----------------
fs/resctrl/rdtgroup.c | 32 ++++++++---------
include/linux/resctrl.h | 28 +++++++-------
8 files changed, 103 insertions(+), 103 deletions(-)
--- a/arch/x86/kernel/cpu/resctrl/core.c
+++ b/arch/x86/kernel/cpu/resctrl/core.c
@@ -363,7 +363,7 @@ static void ctrl_domain_free(struct rdt_
kfree(hw_dom);
}
-static void mon_domain_free(struct rdt_hw_mon_domain *hw_dom)
+static void mon_domain_free(struct rdt_hw_l3_mon_domain *hw_dom)
{
int idx;
@@ -400,7 +400,7 @@ static int domain_setup_ctrlval(struct r
* @num_rmid: The size of the MBM counter array
* @hw_dom: The domain that owns the allocated arrays
*/
-static int arch_domain_mbm_alloc(u32 num_rmid, struct rdt_hw_mon_domain *hw_dom)
+static int arch_domain_mbm_alloc(u32 num_rmid, struct rdt_hw_l3_mon_domain *hw_dom)
{
size_t tsize = sizeof(*hw_dom->arch_mbm_states[0]);
enum resctrl_event_id eventid;
@@ -499,9 +499,9 @@ static void domain_add_cpu_mon(int cpu,
{
int id = get_domain_id_from_scope(cpu, r->mon_scope);
struct list_head *add_pos = NULL;
- struct rdt_hw_mon_domain *hw_dom;
+ struct rdt_hw_l3_mon_domain *hw_dom;
struct rdt_domain_hdr *hdr;
- struct rdt_mon_domain *d;
+ struct rdt_l3_mon_domain *d;
struct cacheinfo *ci;
int err;
@@ -517,7 +517,7 @@ static void domain_add_cpu_mon(int cpu,
if (hdr) {
if (WARN_ON_ONCE(hdr->type != RESCTRL_MON_DOMAIN))
return;
- d = container_of(hdr, struct rdt_mon_domain, hdr);
+ d = container_of(hdr, struct rdt_l3_mon_domain, hdr);
cpumask_set_cpu(cpu, &d->hdr.cpu_mask);
/* Update the mbm_assign_mode state for the CPU if supported */
@@ -620,9 +620,9 @@ static void domain_remove_cpu_ctrl(int c
static void domain_remove_cpu_mon(int cpu, struct rdt_resource *r)
{
int id = get_domain_id_from_scope(cpu, r->mon_scope);
- struct rdt_hw_mon_domain *hw_dom;
+ struct rdt_hw_l3_mon_domain *hw_dom;
struct rdt_domain_hdr *hdr;
- struct rdt_mon_domain *d;
+ struct rdt_l3_mon_domain *d;
lockdep_assert_held(&domain_list_lock);
@@ -642,7 +642,7 @@ static void domain_remove_cpu_mon(int cp
if (WARN_ON_ONCE(hdr->type != RESCTRL_MON_DOMAIN))
return;
- d = container_of(hdr, struct rdt_mon_domain, hdr);
+ d = container_of(hdr, struct rdt_l3_mon_domain, hdr);
hw_dom = resctrl_to_arch_mon_dom(d);
cpumask_clear_cpu(cpu, &d->hdr.cpu_mask);
--- a/arch/x86/kernel/cpu/resctrl/internal.h
+++ b/arch/x86/kernel/cpu/resctrl/internal.h
@@ -63,17 +63,17 @@ struct rdt_hw_ctrl_domain {
};
/**
- * struct rdt_hw_mon_domain - Arch private attributes of a set of CPUs that share
- * a resource for a monitor function
- * @d_resctrl: Properties exposed to the resctrl file system
+ * struct rdt_hw_l3_mon_domain - Arch private attributes of a set of CPUs sharing
+ * RDT_RESOURCE_L3 monitoring
+ * @d_resctrl: Properties exposed to the resctrl file system
* @arch_mbm_states: Per-event pointer to the MBM event's saved state.
* An MBM event's state is an array of struct arch_mbm_state
* indexed by RMID on x86.
*
* Members of this structure are accessed via helpers that provide abstraction.
*/
-struct rdt_hw_mon_domain {
- struct rdt_mon_domain d_resctrl;
+struct rdt_hw_l3_mon_domain {
+ struct rdt_l3_mon_domain d_resctrl;
struct arch_mbm_state *arch_mbm_states[QOS_NUM_L3_MBM_EVENTS];
};
@@ -82,9 +82,9 @@ static inline struct rdt_hw_ctrl_domain
return container_of(r, struct rdt_hw_ctrl_domain, d_resctrl);
}
-static inline struct rdt_hw_mon_domain *resctrl_to_arch_mon_dom(struct rdt_mon_domain *r)
+static inline struct rdt_hw_l3_mon_domain *resctrl_to_arch_mon_dom(struct rdt_l3_mon_domain *r)
{
- return container_of(r, struct rdt_hw_mon_domain, d_resctrl);
+ return container_of(r, struct rdt_hw_l3_mon_domain, d_resctrl);
}
/**
@@ -138,7 +138,7 @@ static inline struct rdt_hw_resource *re
extern struct rdt_hw_resource rdt_resources_all[];
-void arch_mon_domain_online(struct rdt_resource *r, struct rdt_mon_domain *d);
+void arch_mon_domain_online(struct rdt_resource *r, struct rdt_l3_mon_domain *d);
/* CPUID.(EAX=10H, ECX=ResID=1).EAX */
union cpuid_0x10_1_eax {
--- a/arch/x86/kernel/cpu/resctrl/monitor.c
+++ b/arch/x86/kernel/cpu/resctrl/monitor.c
@@ -109,7 +109,7 @@ static inline u64 get_corrected_mbm_coun
*
* In RMID sharing mode there are fewer "logical RMID" values available
* to accumulate data ("physical RMIDs" are divided evenly between SNC
- * nodes that share an L3 cache). Linux creates an rdt_mon_domain for
+ * nodes that share an L3 cache). Linux creates an rdt_l3_mon_domain for
* each SNC node.
*
* The value loaded into IA32_PQR_ASSOC is the "logical RMID".
@@ -157,7 +157,7 @@ static int __rmid_read_phys(u32 prmid, e
return 0;
}
-static struct arch_mbm_state *get_arch_mbm_state(struct rdt_hw_mon_domain *hw_dom,
+static struct arch_mbm_state *get_arch_mbm_state(struct rdt_hw_l3_mon_domain *hw_dom,
u32 rmid,
enum resctrl_event_id eventid)
{
@@ -171,11 +171,11 @@ static struct arch_mbm_state *get_arch_m
return state ? &state[rmid] : NULL;
}
-void resctrl_arch_reset_rmid(struct rdt_resource *r, struct rdt_mon_domain *d,
+void resctrl_arch_reset_rmid(struct rdt_resource *r, struct rdt_l3_mon_domain *d,
u32 unused, u32 rmid,
enum resctrl_event_id eventid)
{
- struct rdt_hw_mon_domain *hw_dom = resctrl_to_arch_mon_dom(d);
+ struct rdt_hw_l3_mon_domain *hw_dom = resctrl_to_arch_mon_dom(d);
int cpu = cpumask_any(&d->hdr.cpu_mask);
struct arch_mbm_state *am;
u32 prmid;
@@ -194,9 +194,9 @@ void resctrl_arch_reset_rmid(struct rdt_
* Assumes that hardware counters are also reset and thus that there is
* no need to record initial non-zero counts.
*/
-void resctrl_arch_reset_rmid_all(struct rdt_resource *r, struct rdt_mon_domain *d)
+void resctrl_arch_reset_rmid_all(struct rdt_resource *r, struct rdt_l3_mon_domain *d)
{
- struct rdt_hw_mon_domain *hw_dom = resctrl_to_arch_mon_dom(d);
+ struct rdt_hw_l3_mon_domain *hw_dom = resctrl_to_arch_mon_dom(d);
enum resctrl_event_id eventid;
int idx;
@@ -217,10 +217,10 @@ static u64 mbm_overflow_count(u64 prev_m
return chunks >> shift;
}
-static u64 get_corrected_val(struct rdt_resource *r, struct rdt_mon_domain *d,
+static u64 get_corrected_val(struct rdt_resource *r, struct rdt_l3_mon_domain *d,
u32 rmid, enum resctrl_event_id eventid, u64 msr_val)
{
- struct rdt_hw_mon_domain *hw_dom = resctrl_to_arch_mon_dom(d);
+ struct rdt_hw_l3_mon_domain *hw_dom = resctrl_to_arch_mon_dom(d);
struct rdt_hw_resource *hw_res = resctrl_to_arch_res(r);
struct arch_mbm_state *am;
u64 chunks;
@@ -238,11 +238,11 @@ static u64 get_corrected_val(struct rdt_
return chunks * hw_res->mon_scale;
}
-int resctrl_arch_rmid_read(struct rdt_resource *r, struct rdt_mon_domain *d,
+int resctrl_arch_rmid_read(struct rdt_resource *r, struct rdt_l3_mon_domain *d,
u32 unused, u32 rmid, enum resctrl_event_id eventid,
u64 *val, void *ignored)
{
- struct rdt_hw_mon_domain *hw_dom = resctrl_to_arch_mon_dom(d);
+ struct rdt_hw_l3_mon_domain *hw_dom = resctrl_to_arch_mon_dom(d);
struct arch_mbm_state *am;
u64 msr_val;
u32 prmid;
@@ -308,11 +308,11 @@ static int __cntr_id_read(u32 cntr_id, u
return 0;
}
-void resctrl_arch_reset_cntr(struct rdt_resource *r, struct rdt_mon_domain *d,
+void resctrl_arch_reset_cntr(struct rdt_resource *r, struct rdt_l3_mon_domain *d,
u32 unused, u32 rmid, int cntr_id,
enum resctrl_event_id eventid)
{
- struct rdt_hw_mon_domain *hw_dom = resctrl_to_arch_mon_dom(d);
+ struct rdt_hw_l3_mon_domain *hw_dom = resctrl_to_arch_mon_dom(d);
struct arch_mbm_state *am;
am = get_arch_mbm_state(hw_dom, rmid, eventid);
@@ -324,7 +324,7 @@ void resctrl_arch_reset_cntr(struct rdt_
}
}
-int resctrl_arch_cntr_read(struct rdt_resource *r, struct rdt_mon_domain *d,
+int resctrl_arch_cntr_read(struct rdt_resource *r, struct rdt_l3_mon_domain *d,
u32 unused, u32 rmid, int cntr_id,
enum resctrl_event_id eventid, u64 *val)
{
@@ -354,7 +354,7 @@ int resctrl_arch_cntr_read(struct rdt_re
* must adjust RMID counter numbers based on SNC node. See
* logical_rmid_to_physical_rmid() for code that does this.
*/
-void arch_mon_domain_online(struct rdt_resource *r, struct rdt_mon_domain *d)
+void arch_mon_domain_online(struct rdt_resource *r, struct rdt_l3_mon_domain *d)
{
if (snc_nodes_per_l3_cache > 1)
msr_clear_bit(MSR_RMID_SNC_CONFIG, 0);
@@ -515,7 +515,7 @@ static void resctrl_abmc_set_one_amd(voi
*/
static void _resctrl_abmc_enable(struct rdt_resource *r, bool enable)
{
- struct rdt_mon_domain *d;
+ struct rdt_l3_mon_domain *d;
lockdep_assert_cpus_held();
@@ -554,11 +554,11 @@ static void resctrl_abmc_config_one_amd(
/*
* Send an IPI to the domain to assign the counter to RMID, event pair.
*/
-void resctrl_arch_config_cntr(struct rdt_resource *r, struct rdt_mon_domain *d,
+void resctrl_arch_config_cntr(struct rdt_resource *r, struct rdt_l3_mon_domain *d,
enum resctrl_event_id evtid, u32 rmid, u32 closid,
u32 cntr_id, bool assign)
{
- struct rdt_hw_mon_domain *hw_dom = resctrl_to_arch_mon_dom(d);
+ struct rdt_hw_l3_mon_domain *hw_dom = resctrl_to_arch_mon_dom(d);
union l3_qos_abmc_cfg abmc_cfg = { 0 };
struct arch_mbm_state *am;
--- a/fs/resctrl/ctrlmondata.c
+++ b/fs/resctrl/ctrlmondata.c
@@ -547,7 +547,7 @@ struct rdt_domain_hdr *resctrl_find_doma
}
void mon_event_read(struct rmid_read *rr, struct rdt_resource *r,
- struct rdt_mon_domain *d, struct rdtgroup *rdtgrp,
+ struct rdt_l3_mon_domain *d, struct rdtgroup *rdtgrp,
cpumask_t *cpumask, int evtid, int first)
{
int cpu;
@@ -596,9 +596,9 @@ int rdtgroup_mondata_show(struct seq_fil
struct kernfs_open_file *of = m->private;
enum resctrl_res_level resid;
enum resctrl_event_id evtid;
+ struct rdt_l3_mon_domain *d;
struct rdt_domain_hdr *hdr;
struct rmid_read rr = {0};
- struct rdt_mon_domain *d;
struct rdtgroup *rdtgrp;
int domid, cpu, ret = 0;
struct rdt_resource *r;
@@ -653,7 +653,7 @@ int rdtgroup_mondata_show(struct seq_fil
ret = -ENOENT;
goto out;
}
- d = container_of(hdr, struct rdt_mon_domain, hdr);
+ d = container_of(hdr, struct rdt_l3_mon_domain, hdr);
mon_event_read(&rr, r, d, rdtgrp, &d->hdr.cpu_mask, evtid, false);
}
--- a/fs/resctrl/internal.h
+++ b/fs/resctrl/internal.h
@@ -123,7 +123,7 @@ struct mon_data {
struct rmid_read {
struct rdtgroup *rgrp;
struct rdt_resource *r;
- struct rdt_mon_domain *d;
+ struct rdt_l3_mon_domain *d;
enum resctrl_event_id evtid;
bool first;
struct cacheinfo *ci;
@@ -362,12 +362,12 @@ void mon_event_count(void *info);
int rdtgroup_mondata_show(struct seq_file *m, void *arg);
void mon_event_read(struct rmid_read *rr, struct rdt_resource *r,
- struct rdt_mon_domain *d, struct rdtgroup *rdtgrp,
+ struct rdt_l3_mon_domain *d, struct rdtgroup *rdtgrp,
cpumask_t *cpumask, int evtid, int first);
int resctrl_mon_resource_init(void);
-void mbm_setup_overflow_handler(struct rdt_mon_domain *dom,
+void mbm_setup_overflow_handler(struct rdt_l3_mon_domain *dom,
unsigned long delay_ms,
int exclude_cpu);
@@ -375,14 +375,14 @@ void mbm_handle_overflow(struct work_str
bool is_mba_sc(struct rdt_resource *r);
-void cqm_setup_limbo_handler(struct rdt_mon_domain *dom, unsigned long delay_ms,
+void cqm_setup_limbo_handler(struct rdt_l3_mon_domain *dom, unsigned long delay_ms,
int exclude_cpu);
void cqm_handle_limbo(struct work_struct *work);
-bool has_busy_rmid(struct rdt_mon_domain *d);
+bool has_busy_rmid(struct rdt_l3_mon_domain *d);
-void __check_limbo(struct rdt_mon_domain *d, bool force_free);
+void __check_limbo(struct rdt_l3_mon_domain *d, bool force_free);
void resctrl_file_fflags_init(const char *config, unsigned long fflags);
--- a/fs/resctrl/monitor.c
+++ b/fs/resctrl/monitor.c
@@ -130,7 +130,7 @@ static void limbo_release_entry(struct r
* decrement the count. If the busy count gets to zero on an RMID, we
* free the RMID
*/
-void __check_limbo(struct rdt_mon_domain *d, bool force_free)
+void __check_limbo(struct rdt_l3_mon_domain *d, bool force_free)
{
struct rdt_resource *r = resctrl_arch_get_resource(RDT_RESOURCE_L3);
u32 idx_limit = resctrl_arch_system_num_rmid_idx();
@@ -193,7 +193,7 @@ void __check_limbo(struct rdt_mon_domain
resctrl_arch_mon_ctx_free(r, QOS_L3_OCCUP_EVENT_ID, arch_mon_ctx);
}
-bool has_busy_rmid(struct rdt_mon_domain *d)
+bool has_busy_rmid(struct rdt_l3_mon_domain *d)
{
u32 idx_limit = resctrl_arch_system_num_rmid_idx();
@@ -294,7 +294,7 @@ int alloc_rmid(u32 closid)
static void add_rmid_to_limbo(struct rmid_entry *entry)
{
struct rdt_resource *r = resctrl_arch_get_resource(RDT_RESOURCE_L3);
- struct rdt_mon_domain *d;
+ struct rdt_l3_mon_domain *d;
u32 idx;
lockdep_assert_held(&rdtgroup_mutex);
@@ -347,7 +347,7 @@ void free_rmid(u32 closid, u32 rmid)
list_add_tail(&entry->list, &rmid_free_lru);
}
-static struct mbm_state *get_mbm_state(struct rdt_mon_domain *d, u32 closid,
+static struct mbm_state *get_mbm_state(struct rdt_l3_mon_domain *d, u32 closid,
u32 rmid, enum resctrl_event_id evtid)
{
u32 idx = resctrl_arch_rmid_idx_encode(closid, rmid);
@@ -367,7 +367,7 @@ static struct mbm_state *get_mbm_state(s
* Return:
* Valid counter ID on success, or -ENOENT on failure.
*/
-static int mbm_cntr_get(struct rdt_resource *r, struct rdt_mon_domain *d,
+static int mbm_cntr_get(struct rdt_resource *r, struct rdt_l3_mon_domain *d,
struct rdtgroup *rdtgrp, enum resctrl_event_id evtid)
{
int cntr_id;
@@ -394,7 +394,7 @@ static int mbm_cntr_get(struct rdt_resou
* Return:
* Valid counter ID on success, or -ENOSPC on failure.
*/
-static int mbm_cntr_alloc(struct rdt_resource *r, struct rdt_mon_domain *d,
+static int mbm_cntr_alloc(struct rdt_resource *r, struct rdt_l3_mon_domain *d,
struct rdtgroup *rdtgrp, enum resctrl_event_id evtid)
{
int cntr_id;
@@ -413,7 +413,7 @@ static int mbm_cntr_alloc(struct rdt_res
/*
* mbm_cntr_free() - Clear the counter ID configuration details in the domain @d.
*/
-static void mbm_cntr_free(struct rdt_mon_domain *d, int cntr_id)
+static void mbm_cntr_free(struct rdt_l3_mon_domain *d, int cntr_id)
{
memset(&d->cntr_cfg[cntr_id], 0, sizeof(*d->cntr_cfg));
}
@@ -423,7 +423,7 @@ static int __l3_mon_event_count(struct r
int cpu = smp_processor_id();
u32 closid = rdtgrp->closid;
u32 rmid = rdtgrp->mon.rmid;
- struct rdt_mon_domain *d;
+ struct rdt_l3_mon_domain *d;
int cntr_id = -ENOENT;
struct mbm_state *m;
int err, ret;
@@ -628,7 +628,7 @@ static struct rdt_ctrl_domain *get_ctrl_
* throttle MSRs already have low percentage values. To avoid
* unnecessarily restricting such rdtgroups, we also increase the bandwidth.
*/
-static void update_mba_bw(struct rdtgroup *rgrp, struct rdt_mon_domain *dom_mbm)
+static void update_mba_bw(struct rdtgroup *rgrp, struct rdt_l3_mon_domain *dom_mbm)
{
u32 closid, rmid, cur_msr_val, new_msr_val;
struct mbm_state *pmbm_data, *cmbm_data;
@@ -696,7 +696,7 @@ static void update_mba_bw(struct rdtgrou
resctrl_arch_update_one(r_mba, dom_mba, closid, CDP_NONE, new_msr_val);
}
-static void mbm_update_one_event(struct rdt_resource *r, struct rdt_mon_domain *d,
+static void mbm_update_one_event(struct rdt_resource *r, struct rdt_l3_mon_domain *d,
struct rdtgroup *rdtgrp, enum resctrl_event_id evtid)
{
struct rmid_read rr = {0};
@@ -728,7 +728,7 @@ static void mbm_update_one_event(struct
resctrl_arch_mon_ctx_free(rr.r, rr.evtid, rr.arch_mon_ctx);
}
-static void mbm_update(struct rdt_resource *r, struct rdt_mon_domain *d,
+static void mbm_update(struct rdt_resource *r, struct rdt_l3_mon_domain *d,
struct rdtgroup *rdtgrp)
{
/*
@@ -749,12 +749,12 @@ static void mbm_update(struct rdt_resour
void cqm_handle_limbo(struct work_struct *work)
{
unsigned long delay = msecs_to_jiffies(CQM_LIMBOCHECK_INTERVAL);
- struct rdt_mon_domain *d;
+ struct rdt_l3_mon_domain *d;
cpus_read_lock();
mutex_lock(&rdtgroup_mutex);
- d = container_of(work, struct rdt_mon_domain, cqm_limbo.work);
+ d = container_of(work, struct rdt_l3_mon_domain, cqm_limbo.work);
__check_limbo(d, false);
@@ -777,7 +777,7 @@ void cqm_handle_limbo(struct work_struct
* @exclude_cpu: Which CPU the handler should not run on,
* RESCTRL_PICK_ANY_CPU to pick any CPU.
*/
-void cqm_setup_limbo_handler(struct rdt_mon_domain *dom, unsigned long delay_ms,
+void cqm_setup_limbo_handler(struct rdt_l3_mon_domain *dom, unsigned long delay_ms,
int exclude_cpu)
{
unsigned long delay = msecs_to_jiffies(delay_ms);
@@ -794,7 +794,7 @@ void mbm_handle_overflow(struct work_str
{
unsigned long delay = msecs_to_jiffies(MBM_OVERFLOW_INTERVAL);
struct rdtgroup *prgrp, *crgrp;
- struct rdt_mon_domain *d;
+ struct rdt_l3_mon_domain *d;
struct list_head *head;
struct rdt_resource *r;
@@ -809,7 +809,7 @@ void mbm_handle_overflow(struct work_str
goto out_unlock;
r = resctrl_arch_get_resource(RDT_RESOURCE_L3);
- d = container_of(work, struct rdt_mon_domain, mbm_over.work);
+ d = container_of(work, struct rdt_l3_mon_domain, mbm_over.work);
list_for_each_entry(prgrp, &rdt_all_groups, rdtgroup_list) {
mbm_update(r, d, prgrp);
@@ -843,7 +843,7 @@ out_unlock:
* @exclude_cpu: Which CPU the handler should not run on,
* RESCTRL_PICK_ANY_CPU to pick any CPU.
*/
-void mbm_setup_overflow_handler(struct rdt_mon_domain *dom, unsigned long delay_ms,
+void mbm_setup_overflow_handler(struct rdt_l3_mon_domain *dom, unsigned long delay_ms,
int exclude_cpu)
{
unsigned long delay = msecs_to_jiffies(delay_ms);
@@ -1098,7 +1098,7 @@ out_unlock:
* mbm_cntr_free_all() - Clear all the counter ID configuration details in the
* domain @d. Called when mbm_assign_mode is changed.
*/
-static void mbm_cntr_free_all(struct rdt_resource *r, struct rdt_mon_domain *d)
+static void mbm_cntr_free_all(struct rdt_resource *r, struct rdt_l3_mon_domain *d)
{
memset(d->cntr_cfg, 0, sizeof(*d->cntr_cfg) * r->mon.num_mbm_cntrs);
}
@@ -1107,7 +1107,7 @@ static void mbm_cntr_free_all(struct rdt
* resctrl_reset_rmid_all() - Reset all non-architecture states for all the
* supported RMIDs.
*/
-static void resctrl_reset_rmid_all(struct rdt_resource *r, struct rdt_mon_domain *d)
+static void resctrl_reset_rmid_all(struct rdt_resource *r, struct rdt_l3_mon_domain *d)
{
u32 idx_limit = resctrl_arch_system_num_rmid_idx();
enum resctrl_event_id evt;
@@ -1128,7 +1128,7 @@ static void resctrl_reset_rmid_all(struc
* Assign the counter if @assign is true else unassign the counter. Reset the
* associated non-architectural state.
*/
-static void rdtgroup_assign_cntr(struct rdt_resource *r, struct rdt_mon_domain *d,
+static void rdtgroup_assign_cntr(struct rdt_resource *r, struct rdt_l3_mon_domain *d,
enum resctrl_event_id evtid, u32 rmid, u32 closid,
u32 cntr_id, bool assign)
{
@@ -1148,7 +1148,7 @@ static void rdtgroup_assign_cntr(struct
* Return:
* 0 on success, < 0 on failure.
*/
-static int rdtgroup_alloc_assign_cntr(struct rdt_resource *r, struct rdt_mon_domain *d,
+static int rdtgroup_alloc_assign_cntr(struct rdt_resource *r, struct rdt_l3_mon_domain *d,
struct rdtgroup *rdtgrp, struct mon_evt *mevt)
{
int cntr_id;
@@ -1183,7 +1183,7 @@ static int rdtgroup_alloc_assign_cntr(st
* Return:
* 0 on success, < 0 on failure.
*/
-static int rdtgroup_assign_cntr_event(struct rdt_mon_domain *d, struct rdtgroup *rdtgrp,
+static int rdtgroup_assign_cntr_event(struct rdt_l3_mon_domain *d, struct rdtgroup *rdtgrp,
struct mon_evt *mevt)
{
struct rdt_resource *r = resctrl_arch_get_resource(mevt->rid);
@@ -1233,7 +1233,7 @@ void rdtgroup_assign_cntrs(struct rdtgro
* rdtgroup_free_unassign_cntr() - Unassign and reset the counter ID configuration
* for the event pointed to by @mevt within the domain @d and resctrl group @rdtgrp.
*/
-static void rdtgroup_free_unassign_cntr(struct rdt_resource *r, struct rdt_mon_domain *d,
+static void rdtgroup_free_unassign_cntr(struct rdt_resource *r, struct rdt_l3_mon_domain *d,
struct rdtgroup *rdtgrp, struct mon_evt *mevt)
{
int cntr_id;
@@ -1254,7 +1254,7 @@ static void rdtgroup_free_unassign_cntr(
* the event structure @mevt from the domain @d and the group @rdtgrp. Unassign
* the counters from all the domains if @d is NULL else unassign from @d.
*/
-static void rdtgroup_unassign_cntr_event(struct rdt_mon_domain *d, struct rdtgroup *rdtgrp,
+static void rdtgroup_unassign_cntr_event(struct rdt_l3_mon_domain *d, struct rdtgroup *rdtgrp,
struct mon_evt *mevt)
{
struct rdt_resource *r = resctrl_arch_get_resource(mevt->rid);
@@ -1329,7 +1329,7 @@ next_config:
static void rdtgroup_update_cntr_event(struct rdt_resource *r, struct rdtgroup *rdtgrp,
enum resctrl_event_id evtid)
{
- struct rdt_mon_domain *d;
+ struct rdt_l3_mon_domain *d;
int cntr_id;
list_for_each_entry(d, &r->mon_domains, hdr.list) {
@@ -1435,7 +1435,7 @@ ssize_t resctrl_mbm_assign_mode_write(st
size_t nbytes, loff_t off)
{
struct rdt_resource *r = rdt_kn_parent_priv(of->kn);
- struct rdt_mon_domain *d;
+ struct rdt_l3_mon_domain *d;
int ret = 0;
bool enable;
@@ -1508,7 +1508,7 @@ int resctrl_num_mbm_cntrs_show(struct ke
struct seq_file *s, void *v)
{
struct rdt_resource *r = rdt_kn_parent_priv(of->kn);
- struct rdt_mon_domain *dom;
+ struct rdt_l3_mon_domain *dom;
bool sep = false;
cpus_read_lock();
@@ -1532,7 +1532,7 @@ int resctrl_available_mbm_cntrs_show(str
struct seq_file *s, void *v)
{
struct rdt_resource *r = rdt_kn_parent_priv(of->kn);
- struct rdt_mon_domain *dom;
+ struct rdt_l3_mon_domain *dom;
bool sep = false;
u32 cntrs, i;
int ret = 0;
@@ -1573,7 +1573,7 @@ out_unlock:
int mbm_L3_assignments_show(struct kernfs_open_file *of, struct seq_file *s, void *v)
{
struct rdt_resource *r = resctrl_arch_get_resource(RDT_RESOURCE_L3);
- struct rdt_mon_domain *d;
+ struct rdt_l3_mon_domain *d;
struct rdtgroup *rdtgrp;
struct mon_evt *mevt;
int ret = 0;
@@ -1636,7 +1636,7 @@ static struct mon_evt *mbm_get_mon_event
return NULL;
}
-static int rdtgroup_modify_assign_state(char *assign, struct rdt_mon_domain *d,
+static int rdtgroup_modify_assign_state(char *assign, struct rdt_l3_mon_domain *d,
struct rdtgroup *rdtgrp, struct mon_evt *mevt)
{
int ret = 0;
@@ -1662,7 +1662,7 @@ static int rdtgroup_modify_assign_state(
static int resctrl_parse_mbm_assignment(struct rdt_resource *r, struct rdtgroup *rdtgrp,
char *event, char *tok)
{
- struct rdt_mon_domain *d;
+ struct rdt_l3_mon_domain *d;
unsigned long dom_id = 0;
char *dom_str, *id_str;
struct mon_evt *mevt;
--- a/fs/resctrl/rdtgroup.c
+++ b/fs/resctrl/rdtgroup.c
@@ -1620,7 +1620,7 @@ static void mondata_config_read(struct r
static int mbm_config_show(struct seq_file *s, struct rdt_resource *r, u32 evtid)
{
struct resctrl_mon_config_info mon_info;
- struct rdt_mon_domain *dom;
+ struct rdt_l3_mon_domain *dom;
bool sep = false;
cpus_read_lock();
@@ -1668,7 +1668,7 @@ static int mbm_local_bytes_config_show(s
}
static void mbm_config_write_domain(struct rdt_resource *r,
- struct rdt_mon_domain *d, u32 evtid, u32 val)
+ struct rdt_l3_mon_domain *d, u32 evtid, u32 val)
{
struct resctrl_mon_config_info mon_info = {0};
@@ -1710,7 +1710,7 @@ static int mon_config_write(struct rdt_r
{
char *dom_str = NULL, *id_str;
unsigned long dom_id, val;
- struct rdt_mon_domain *d;
+ struct rdt_l3_mon_domain *d;
/* Walking r->domains, ensure it can't race with cpuhp */
lockdep_assert_cpus_held();
@@ -2718,7 +2718,7 @@ static int rdt_get_tree(struct fs_contex
{
struct rdt_fs_context *ctx = rdt_fc2context(fc);
unsigned long flags = RFTYPE_CTRL_BASE;
- struct rdt_mon_domain *dom;
+ struct rdt_l3_mon_domain *dom;
struct rdt_resource *r;
int ret;
@@ -3169,7 +3169,7 @@ static void mon_rmdir_one_subdir(struct
* when last domain being summed is removed.
*/
static void rmdir_mondata_subdir_allrdtgrp(struct rdt_resource *r,
- struct rdt_mon_domain *d)
+ struct rdt_l3_mon_domain *d)
{
struct rdtgroup *prgrp, *crgrp;
char subname[32];
@@ -3189,7 +3189,7 @@ static void rmdir_mondata_subdir_allrdtg
}
}
-static int mon_add_all_files(struct kernfs_node *kn, struct rdt_mon_domain *d,
+static int mon_add_all_files(struct kernfs_node *kn, struct rdt_l3_mon_domain *d,
struct rdt_resource *r, struct rdtgroup *prgrp,
bool do_sum)
{
@@ -3218,7 +3218,7 @@ static int mon_add_all_files(struct kern
}
static int mkdir_mondata_subdir(struct kernfs_node *parent_kn,
- struct rdt_mon_domain *d,
+ struct rdt_l3_mon_domain *d,
struct rdt_resource *r, struct rdtgroup *prgrp)
{
struct kernfs_node *kn, *ckn;
@@ -3280,7 +3280,7 @@ out_destroy:
* and "monitor" groups with given domain id.
*/
static void mkdir_mondata_subdir_allrdtgrp(struct rdt_resource *r,
- struct rdt_mon_domain *d)
+ struct rdt_l3_mon_domain *d)
{
struct kernfs_node *parent_kn;
struct rdtgroup *prgrp, *crgrp;
@@ -3302,7 +3302,7 @@ static int mkdir_mondata_subdir_alldom(s
struct rdt_resource *r,
struct rdtgroup *prgrp)
{
- struct rdt_mon_domain *dom;
+ struct rdt_l3_mon_domain *dom;
int ret;
/* Walking r->domains, ensure it can't race with cpuhp */
@@ -4170,7 +4170,7 @@ static void rdtgroup_setup_default(void)
mutex_unlock(&rdtgroup_mutex);
}
-static void domain_destroy_mon_state(struct rdt_mon_domain *d)
+static void domain_destroy_mon_state(struct rdt_l3_mon_domain *d)
{
int idx;
@@ -4192,7 +4192,7 @@ void resctrl_offline_ctrl_domain(struct
mutex_unlock(&rdtgroup_mutex);
}
-void resctrl_offline_mon_domain(struct rdt_resource *r, struct rdt_mon_domain *d)
+void resctrl_offline_mon_domain(struct rdt_resource *r, struct rdt_l3_mon_domain *d)
{
mutex_lock(&rdtgroup_mutex);
@@ -4236,7 +4236,7 @@ void resctrl_offline_mon_domain(struct r
*
* Returns 0 for success, or -ENOMEM.
*/
-static int domain_setup_mon_state(struct rdt_resource *r, struct rdt_mon_domain *d)
+static int domain_setup_mon_state(struct rdt_resource *r, struct rdt_l3_mon_domain *d)
{
u32 idx_limit = resctrl_arch_system_num_rmid_idx();
size_t tsize = sizeof(*d->mbm_states[0]);
@@ -4292,7 +4292,7 @@ int resctrl_online_ctrl_domain(struct rd
return err;
}
-int resctrl_online_mon_domain(struct rdt_resource *r, struct rdt_mon_domain *d)
+int resctrl_online_mon_domain(struct rdt_resource *r, struct rdt_l3_mon_domain *d)
{
int err;
@@ -4344,10 +4344,10 @@ static void clear_childcpus(struct rdtgr
}
}
-static struct rdt_mon_domain *get_mon_domain_from_cpu(int cpu,
+static struct rdt_l3_mon_domain *get_mon_domain_from_cpu(int cpu,
struct rdt_resource *r)
{
- struct rdt_mon_domain *d;
+ struct rdt_l3_mon_domain *d;
lockdep_assert_cpus_held();
@@ -4363,7 +4363,7 @@ static struct rdt_mon_domain *get_mon_do
void resctrl_offline_cpu(unsigned int cpu)
{
struct rdt_resource *l3 = resctrl_arch_get_resource(RDT_RESOURCE_L3);
- struct rdt_mon_domain *d;
+ struct rdt_l3_mon_domain *d;
struct rdtgroup *rdtgrp;
mutex_lock(&rdtgroup_mutex);
--- a/include/linux/resctrl.h
+++ b/include/linux/resctrl.h
@@ -169,7 +169,7 @@ struct mbm_cntr_cfg {
};
/**
- * struct rdt_mon_domain - group of CPUs sharing a resctrl monitor resource
+ * struct rdt_l3_mon_domain - group of CPUs sharing RDT_RESOURCE_L3 monitoring
* @hdr: common header for different domain types
* @ci_id: cache info id for this domain
* @rmid_busy_llc: bitmap of which limbo RMIDs are above threshold
@@ -183,7 +183,7 @@ struct mbm_cntr_cfg {
* @cntr_cfg: array of assignable counters' configuration (indexed
* by counter ID)
*/
-struct rdt_mon_domain {
+struct rdt_l3_mon_domain {
struct rdt_domain_hdr hdr;
unsigned int ci_id;
unsigned long *rmid_busy_llc;
@@ -355,10 +355,10 @@ struct resctrl_cpu_defaults {
};
struct resctrl_mon_config_info {
- struct rdt_resource *r;
- struct rdt_mon_domain *d;
- u32 evtid;
- u32 mon_config;
+ struct rdt_resource *r;
+ struct rdt_l3_mon_domain *d;
+ u32 evtid;
+ u32 mon_config;
};
/**
@@ -495,9 +495,9 @@ int resctrl_arch_update_one(struct rdt_r
u32 resctrl_arch_get_config(struct rdt_resource *r, struct rdt_ctrl_domain *d,
u32 closid, enum resctrl_conf_type type);
int resctrl_online_ctrl_domain(struct rdt_resource *r, struct rdt_ctrl_domain *d);
-int resctrl_online_mon_domain(struct rdt_resource *r, struct rdt_mon_domain *d);
+int resctrl_online_mon_domain(struct rdt_resource *r, struct rdt_l3_mon_domain *d);
void resctrl_offline_ctrl_domain(struct rdt_resource *r, struct rdt_ctrl_domain *d);
-void resctrl_offline_mon_domain(struct rdt_resource *r, struct rdt_mon_domain *d);
+void resctrl_offline_mon_domain(struct rdt_resource *r, struct rdt_l3_mon_domain *d);
void resctrl_online_cpu(unsigned int cpu);
void resctrl_offline_cpu(unsigned int cpu);
@@ -526,7 +526,7 @@ void resctrl_offline_cpu(unsigned int cp
* Return:
* 0 on success, or -EIO, -EINVAL etc on error.
*/
-int resctrl_arch_rmid_read(struct rdt_resource *r, struct rdt_mon_domain *d,
+int resctrl_arch_rmid_read(struct rdt_resource *r, struct rdt_l3_mon_domain *d,
u32 closid, u32 rmid, enum resctrl_event_id eventid,
u64 *val, void *arch_mon_ctx);
@@ -573,7 +573,7 @@ struct rdt_domain_hdr *resctrl_find_doma
*
* This can be called from any CPU.
*/
-void resctrl_arch_reset_rmid(struct rdt_resource *r, struct rdt_mon_domain *d,
+void resctrl_arch_reset_rmid(struct rdt_resource *r, struct rdt_l3_mon_domain *d,
u32 closid, u32 rmid,
enum resctrl_event_id eventid);
@@ -586,7 +586,7 @@ void resctrl_arch_reset_rmid(struct rdt_
*
* This can be called from any CPU.
*/
-void resctrl_arch_reset_rmid_all(struct rdt_resource *r, struct rdt_mon_domain *d);
+void resctrl_arch_reset_rmid_all(struct rdt_resource *r, struct rdt_l3_mon_domain *d);
/**
* resctrl_arch_reset_all_ctrls() - Reset the control for each CLOSID to its
@@ -612,7 +612,7 @@ void resctrl_arch_reset_all_ctrls(struct
*
* This can be called from any CPU.
*/
-void resctrl_arch_config_cntr(struct rdt_resource *r, struct rdt_mon_domain *d,
+void resctrl_arch_config_cntr(struct rdt_resource *r, struct rdt_l3_mon_domain *d,
enum resctrl_event_id evtid, u32 rmid, u32 closid,
u32 cntr_id, bool assign);
@@ -635,7 +635,7 @@ void resctrl_arch_config_cntr(struct rdt
* Return:
* 0 on success, or -EIO, -EINVAL etc on error.
*/
-int resctrl_arch_cntr_read(struct rdt_resource *r, struct rdt_mon_domain *d,
+int resctrl_arch_cntr_read(struct rdt_resource *r, struct rdt_l3_mon_domain *d,
u32 closid, u32 rmid, int cntr_id,
enum resctrl_event_id eventid, u64 *val);
@@ -650,7 +650,7 @@ int resctrl_arch_cntr_read(struct rdt_re
*
* This can be called from any CPU.
*/
-void resctrl_arch_reset_cntr(struct rdt_resource *r, struct rdt_mon_domain *d,
+void resctrl_arch_reset_cntr(struct rdt_resource *r, struct rdt_l3_mon_domain *d,
u32 closid, u32 rmid, int cntr_id,
enum resctrl_event_id eventid);
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 651/675] x86,fs/resctrl: Rename some L3 specific functions
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (649 preceding siblings ...)
2026-07-30 14:16 ` [PATCH 6.18 650/675] x86,fs/resctrl: Rename struct rdt_mon_domain and rdt_hw_mon_domain Greg Kroah-Hartman
@ 2026-07-30 14:16 ` Greg Kroah-Hartman
2026-07-30 14:16 ` [PATCH 6.18 652/675] fs/resctrl: Move allocation/free of closid_num_dirty_rmid[] Greg Kroah-Hartman
` (28 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:16 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Tony Luck, Borislav Petkov (AMD),
Reinette Chatre, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Tony Luck <tony.luck@intel.com>
[ Upstream commit 9c214d10c50990c7a61b95887493df9ae713eec5 ]
With the arrival of monitor events tied to new domains associated with a
different resource it would be clearer if the L3 resource specific functions
are more accurately named.
Rename three groups of functions:
Functions that allocate/free architecture per-RMID MBM state information:
arch_domain_mbm_alloc() -> l3_mon_domain_mbm_alloc()
mon_domain_free() -> l3_mon_domain_free()
Functions that allocate/free filesystem per-RMID MBM state information:
domain_setup_mon_state() -> domain_setup_l3_mon_state()
domain_destroy_mon_state() -> domain_destroy_l3_mon_state()
Initialization/exit:
rdt_get_mon_l3_config() -> rdt_get_l3_mon_config()
resctrl_mon_resource_init() -> resctrl_l3_mon_resource_init()
resctrl_mon_resource_exit() -> resctrl_l3_mon_resource_exit()
Ensure kernel-doc descriptions of these functions' return values are present
and correctly formatted.
Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Reinette Chatre <reinette.chatre@intel.com>
Link: https://lore.kernel.org/20251217172121.12030-1-tony.luck@intel.com
Stable-dep-of: 52fce648607e ("fs/resctrl: Fix use-after-free during unmount")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/x86/kernel/cpu/resctrl/core.c | 20 +++++++++++---------
arch/x86/kernel/cpu/resctrl/internal.h | 2 +-
arch/x86/kernel/cpu/resctrl/monitor.c | 2 +-
fs/resctrl/internal.h | 6 +++---
fs/resctrl/monitor.c | 8 ++++----
fs/resctrl/rdtgroup.c | 24 ++++++++++++------------
6 files changed, 32 insertions(+), 30 deletions(-)
--- a/arch/x86/kernel/cpu/resctrl/core.c
+++ b/arch/x86/kernel/cpu/resctrl/core.c
@@ -363,7 +363,7 @@ static void ctrl_domain_free(struct rdt_
kfree(hw_dom);
}
-static void mon_domain_free(struct rdt_hw_l3_mon_domain *hw_dom)
+static void l3_mon_domain_free(struct rdt_hw_l3_mon_domain *hw_dom)
{
int idx;
@@ -396,11 +396,13 @@ static int domain_setup_ctrlval(struct r
}
/**
- * arch_domain_mbm_alloc() - Allocate arch private storage for the MBM counters
+ * l3_mon_domain_mbm_alloc() - Allocate arch private storage for the MBM counters
* @num_rmid: The size of the MBM counter array
* @hw_dom: The domain that owns the allocated arrays
+ *
+ * Return: 0 for success, or -ENOMEM.
*/
-static int arch_domain_mbm_alloc(u32 num_rmid, struct rdt_hw_l3_mon_domain *hw_dom)
+static int l3_mon_domain_mbm_alloc(u32 num_rmid, struct rdt_hw_l3_mon_domain *hw_dom)
{
size_t tsize = sizeof(*hw_dom->arch_mbm_states[0]);
enum resctrl_event_id eventid;
@@ -536,7 +538,7 @@ static void domain_add_cpu_mon(int cpu,
ci = get_cpu_cacheinfo_level(cpu, RESCTRL_L3_CACHE);
if (!ci) {
pr_warn_once("Can't find L3 cache for CPU:%d resource %s\n", cpu, r->name);
- mon_domain_free(hw_dom);
+ l3_mon_domain_free(hw_dom);
return;
}
d->ci_id = ci->id;
@@ -548,8 +550,8 @@ static void domain_add_cpu_mon(int cpu,
arch_mon_domain_online(r, d);
- if (arch_domain_mbm_alloc(r->mon.num_rmid, hw_dom)) {
- mon_domain_free(hw_dom);
+ if (l3_mon_domain_mbm_alloc(r->mon.num_rmid, hw_dom)) {
+ l3_mon_domain_free(hw_dom);
return;
}
@@ -559,7 +561,7 @@ static void domain_add_cpu_mon(int cpu,
if (err) {
list_del_rcu(&d->hdr.list);
synchronize_rcu();
- mon_domain_free(hw_dom);
+ l3_mon_domain_free(hw_dom);
}
}
@@ -650,7 +652,7 @@ static void domain_remove_cpu_mon(int cp
resctrl_offline_mon_domain(r, d);
list_del_rcu(&d->hdr.list);
synchronize_rcu();
- mon_domain_free(hw_dom);
+ l3_mon_domain_free(hw_dom);
return;
}
@@ -897,7 +899,7 @@ static __init bool get_rdt_mon_resources
if (!ret)
return false;
- return !rdt_get_mon_l3_config(r);
+ return !rdt_get_l3_mon_config(r);
}
static __init void __check_quirks_intel(void)
--- a/arch/x86/kernel/cpu/resctrl/internal.h
+++ b/arch/x86/kernel/cpu/resctrl/internal.h
@@ -211,7 +211,7 @@ union l3_qos_abmc_cfg {
void rdt_ctrl_update(void *arg);
-int rdt_get_mon_l3_config(struct rdt_resource *r);
+int rdt_get_l3_mon_config(struct rdt_resource *r);
bool rdt_cpu_has(int flag);
--- a/arch/x86/kernel/cpu/resctrl/monitor.c
+++ b/arch/x86/kernel/cpu/resctrl/monitor.c
@@ -423,7 +423,7 @@ static __init int snc_get_config(void)
return ret;
}
-int __init rdt_get_mon_l3_config(struct rdt_resource *r)
+int __init rdt_get_l3_mon_config(struct rdt_resource *r)
{
unsigned int mbm_offset = boot_cpu_data.x86_cache_mbm_width_offset;
struct rdt_hw_resource *hw_res = resctrl_to_arch_res(r);
--- a/fs/resctrl/internal.h
+++ b/fs/resctrl/internal.h
@@ -355,7 +355,9 @@ int alloc_rmid(u32 closid);
void free_rmid(u32 closid, u32 rmid);
-void resctrl_mon_resource_exit(void);
+int resctrl_l3_mon_resource_init(void);
+
+void resctrl_l3_mon_resource_exit(void);
void mon_event_count(void *info);
@@ -365,8 +367,6 @@ void mon_event_read(struct rmid_read *rr
struct rdt_l3_mon_domain *d, struct rdtgroup *rdtgrp,
cpumask_t *cpumask, int evtid, int first);
-int resctrl_mon_resource_init(void);
-
void mbm_setup_overflow_handler(struct rdt_l3_mon_domain *dom,
unsigned long delay_ms,
int exclude_cpu);
--- a/fs/resctrl/monitor.c
+++ b/fs/resctrl/monitor.c
@@ -1758,7 +1758,7 @@ ssize_t mbm_L3_assignments_write(struct
}
/**
- * resctrl_mon_resource_init() - Initialise global monitoring structures.
+ * resctrl_l3_mon_resource_init() - Initialise global monitoring structures.
*
* Allocate and initialise global monitor resources that do not belong to a
* specific domain. i.e. the rmid_ptrs[] used for the limbo and free lists.
@@ -1767,9 +1767,9 @@ ssize_t mbm_L3_assignments_write(struct
* Resctrl's cpuhp callbacks may be called before this point to bring a domain
* online.
*
- * Returns 0 for success, or -ENOMEM.
+ * Return: 0 for success, or -ENOMEM.
*/
-int resctrl_mon_resource_init(void)
+int resctrl_l3_mon_resource_init(void)
{
struct rdt_resource *r = resctrl_arch_get_resource(RDT_RESOURCE_L3);
int ret;
@@ -1819,7 +1819,7 @@ int resctrl_mon_resource_init(void)
return 0;
}
-void resctrl_mon_resource_exit(void)
+void resctrl_l3_mon_resource_exit(void)
{
struct rdt_resource *r = resctrl_arch_get_resource(RDT_RESOURCE_L3);
--- a/fs/resctrl/rdtgroup.c
+++ b/fs/resctrl/rdtgroup.c
@@ -4170,7 +4170,7 @@ static void rdtgroup_setup_default(void)
mutex_unlock(&rdtgroup_mutex);
}
-static void domain_destroy_mon_state(struct rdt_l3_mon_domain *d)
+static void domain_destroy_l3_mon_state(struct rdt_l3_mon_domain *d)
{
int idx;
@@ -4218,13 +4218,13 @@ void resctrl_offline_mon_domain(struct r
cancel_delayed_work(&d->cqm_limbo);
}
- domain_destroy_mon_state(d);
+ domain_destroy_l3_mon_state(d);
mutex_unlock(&rdtgroup_mutex);
}
/**
- * domain_setup_mon_state() - Initialise domain monitoring structures.
+ * domain_setup_l3_mon_state() - Initialise domain monitoring structures.
* @r: The resource for the newly online domain.
* @d: The newly online domain.
*
@@ -4232,11 +4232,11 @@ void resctrl_offline_mon_domain(struct r
* Called when the first CPU of a domain comes online, regardless of whether
* the filesystem is mounted.
* During boot this may be called before global allocations have been made by
- * resctrl_mon_resource_init().
+ * resctrl_l3_mon_resource_init().
*
- * Returns 0 for success, or -ENOMEM.
+ * Return: 0 for success, or -ENOMEM.
*/
-static int domain_setup_mon_state(struct rdt_resource *r, struct rdt_l3_mon_domain *d)
+static int domain_setup_l3_mon_state(struct rdt_resource *r, struct rdt_l3_mon_domain *d)
{
u32 idx_limit = resctrl_arch_system_num_rmid_idx();
size_t tsize = sizeof(*d->mbm_states[0]);
@@ -4298,7 +4298,7 @@ int resctrl_online_mon_domain(struct rdt
mutex_lock(&rdtgroup_mutex);
- err = domain_setup_mon_state(r, d);
+ err = domain_setup_l3_mon_state(r, d);
if (err)
goto out_unlock;
@@ -4413,13 +4413,13 @@ int resctrl_init(void)
thread_throttle_mode_init();
- ret = resctrl_mon_resource_init();
+ ret = resctrl_l3_mon_resource_init();
if (ret)
return ret;
ret = sysfs_create_mount_point(fs_kobj, "resctrl");
if (ret) {
- resctrl_mon_resource_exit();
+ resctrl_l3_mon_resource_exit();
return ret;
}
@@ -4454,7 +4454,7 @@ int resctrl_init(void)
cleanup_mountpoint:
sysfs_remove_mount_point(fs_kobj, "resctrl");
- resctrl_mon_resource_exit();
+ resctrl_l3_mon_resource_exit();
return ret;
}
@@ -4490,7 +4490,7 @@ static bool resctrl_online_domains_exist
* When called by the architecture code, all CPUs and resctrl domains must be
* offline. This ensures the limbo and overflow handlers are not scheduled to
* run, meaning the data structures they access can be freed by
- * resctrl_mon_resource_exit().
+ * resctrl_l3_mon_resource_exit().
*
* After resctrl_exit() returns, the architecture code should return an
* error from all resctrl_arch_ functions that can do this.
@@ -4517,5 +4517,5 @@ void resctrl_exit(void)
* it can be used to umount resctrl.
*/
- resctrl_mon_resource_exit();
+ resctrl_l3_mon_resource_exit();
}
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 652/675] fs/resctrl: Move allocation/free of closid_num_dirty_rmid[]
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (650 preceding siblings ...)
2026-07-30 14:16 ` [PATCH 6.18 651/675] x86,fs/resctrl: Rename some L3 specific functions Greg Kroah-Hartman
@ 2026-07-30 14:16 ` Greg Kroah-Hartman
2026-07-30 14:16 ` [PATCH 6.18 653/675] fs/resctrl: Move RMID initialization to first mount Greg Kroah-Hartman
` (27 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:16 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Tony Luck, Borislav Petkov (AMD),
Reinette Chatre, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Tony Luck <tony.luck@intel.com>
[ Upstream commit ee7f6af79f0916b6c49e15edd4cba020b3e4c4ac ]
closid_num_dirty_rmid[] and rmid_ptrs[] are allocated together during resctrl
initialization and freed together during resctrl exit.
Telemetry events are enumerated on resctrl mount so only at resctrl mount will
the number of RMID supported by all monitoring resources and needed as size
for rmid_ptrs[] be known.
Separate closid_num_dirty_rmid[] and rmid_ptrs[] allocation and free in
preparation for rmid_ptrs[] to be allocated on resctrl mount.
Keep the rdtgroup_mutex protection around the allocation and free of
closid_num_dirty_rmid[] as ARM needs this to guarantee memory ordering.
Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Reinette Chatre <reinette.chatre@intel.com>
Link: https://lore.kernel.org/20251217172121.12030-1-tony.luck@intel.com
Stable-dep-of: 52fce648607e ("fs/resctrl: Fix use-after-free during unmount")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/resctrl/monitor.c | 79 ++++++++++++++++++++++++++++++++-------------------
1 file changed, 51 insertions(+), 28 deletions(-)
--- a/fs/resctrl/monitor.c
+++ b/fs/resctrl/monitor.c
@@ -865,36 +865,14 @@ void mbm_setup_overflow_handler(struct r
static int dom_data_init(struct rdt_resource *r)
{
u32 idx_limit = resctrl_arch_system_num_rmid_idx();
- u32 num_closid = resctrl_arch_get_num_closid(r);
struct rmid_entry *entry = NULL;
int err = 0, i;
u32 idx;
mutex_lock(&rdtgroup_mutex);
- if (IS_ENABLED(CONFIG_RESCTRL_RMID_DEPENDS_ON_CLOSID)) {
- u32 *tmp;
-
- /*
- * If the architecture hasn't provided a sanitised value here,
- * this may result in larger arrays than necessary. Resctrl will
- * use a smaller system wide value based on the resources in
- * use.
- */
- tmp = kcalloc(num_closid, sizeof(*tmp), GFP_KERNEL);
- if (!tmp) {
- err = -ENOMEM;
- goto out_unlock;
- }
-
- closid_num_dirty_rmid = tmp;
- }
rmid_ptrs = kcalloc(idx_limit, sizeof(struct rmid_entry), GFP_KERNEL);
if (!rmid_ptrs) {
- if (IS_ENABLED(CONFIG_RESCTRL_RMID_DEPENDS_ON_CLOSID)) {
- kfree(closid_num_dirty_rmid);
- closid_num_dirty_rmid = NULL;
- }
err = -ENOMEM;
goto out_unlock;
}
@@ -930,11 +908,6 @@ static void dom_data_exit(struct rdt_res
if (!r->mon_capable)
goto out_unlock;
- if (IS_ENABLED(CONFIG_RESCTRL_RMID_DEPENDS_ON_CLOSID)) {
- kfree(closid_num_dirty_rmid);
- closid_num_dirty_rmid = NULL;
- }
-
kfree(rmid_ptrs);
rmid_ptrs = NULL;
@@ -1757,6 +1730,45 @@ ssize_t mbm_L3_assignments_write(struct
return ret ?: nbytes;
}
+static int closid_num_dirty_rmid_alloc(struct rdt_resource *r)
+{
+ if (IS_ENABLED(CONFIG_RESCTRL_RMID_DEPENDS_ON_CLOSID)) {
+ u32 num_closid = resctrl_arch_get_num_closid(r);
+ u32 *tmp;
+
+ /* For ARM memory ordering access to closid_num_dirty_rmid */
+ mutex_lock(&rdtgroup_mutex);
+
+ /*
+ * If the architecture hasn't provided a sanitised value here,
+ * this may result in larger arrays than necessary. Resctrl will
+ * use a smaller system wide value based on the resources in
+ * use.
+ */
+ tmp = kcalloc(num_closid, sizeof(*tmp), GFP_KERNEL);
+ if (!tmp) {
+ mutex_unlock(&rdtgroup_mutex);
+ return -ENOMEM;
+ }
+
+ closid_num_dirty_rmid = tmp;
+
+ mutex_unlock(&rdtgroup_mutex);
+ }
+
+ return 0;
+}
+
+static void closid_num_dirty_rmid_free(void)
+{
+ if (IS_ENABLED(CONFIG_RESCTRL_RMID_DEPENDS_ON_CLOSID)) {
+ mutex_lock(&rdtgroup_mutex);
+ kfree(closid_num_dirty_rmid);
+ closid_num_dirty_rmid = NULL;
+ mutex_unlock(&rdtgroup_mutex);
+ }
+}
+
/**
* resctrl_l3_mon_resource_init() - Initialise global monitoring structures.
*
@@ -1777,10 +1789,16 @@ int resctrl_l3_mon_resource_init(void)
if (!r->mon_capable)
return 0;
- ret = dom_data_init(r);
+ ret = closid_num_dirty_rmid_alloc(r);
if (ret)
return ret;
+ ret = dom_data_init(r);
+ if (ret) {
+ closid_num_dirty_rmid_free();
+ return ret;
+ }
+
if (resctrl_arch_is_evt_configurable(QOS_L3_MBM_TOTAL_EVENT_ID)) {
mon_event_all[QOS_L3_MBM_TOTAL_EVENT_ID].configurable = true;
resctrl_file_fflags_init("mbm_total_bytes_config",
@@ -1823,5 +1841,10 @@ void resctrl_l3_mon_resource_exit(void)
{
struct rdt_resource *r = resctrl_arch_get_resource(RDT_RESOURCE_L3);
+ if (!r->mon_capable)
+ return;
+
+ closid_num_dirty_rmid_free();
+
dom_data_exit(r);
}
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 653/675] fs/resctrl: Move RMID initialization to first mount
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (651 preceding siblings ...)
2026-07-30 14:16 ` [PATCH 6.18 652/675] fs/resctrl: Move allocation/free of closid_num_dirty_rmid[] Greg Kroah-Hartman
@ 2026-07-30 14:16 ` Greg Kroah-Hartman
2026-07-30 14:16 ` [PATCH 6.18 654/675] fs/resctrl: Fix use-after-free during unmount Greg Kroah-Hartman
` (26 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:16 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Tony Luck, Borislav Petkov (AMD),
Reinette Chatre, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Tony Luck <tony.luck@intel.com>
[ Upstream commit d0891647fbc6e931f27517364cbc4ee1811d76db ]
L3 monitor features are enumerated during resctrl initialization and
rmid_ptrs[] that tracks all RMIDs and depends on the number of supported
RMIDs is allocated during this time.
Telemetry monitor features are enumerated during first resctrl mount and
may support a different number of RMIDs compared to L3 monitor features.
Delay allocation and initialization of rmid_ptrs[] until first mount.
Since the number of RMIDs cannot change on later mounts, keep the same set of
rmid_ptrs[] until resctrl_exit(). This is required because the limbo handler
keeps running after resctrl is unmounted and needs to access rmid_ptrs[]
as it keeps tracking busy RMIDs after unmount.
Rename routines to match what they now do:
dom_data_init() -> setup_rmid_lru_list()
dom_data_exit() -> free_rmid_lru_list()
Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Reinette Chatre <reinette.chatre@intel.com>
Link: https://lore.kernel.org/20251217172121.12030-1-tony.luck@intel.com
Stable-dep-of: 52fce648607e ("fs/resctrl: Fix use-after-free during unmount")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/resctrl/internal.h | 4 +++
fs/resctrl/monitor.c | 54 +++++++++++++++++++++++---------------------------
fs/resctrl/rdtgroup.c | 5 ++++
3 files changed, 34 insertions(+), 29 deletions(-)
--- a/fs/resctrl/internal.h
+++ b/fs/resctrl/internal.h
@@ -351,6 +351,10 @@ int closids_supported(void);
void closid_free(int closid);
+int setup_rmid_lru_list(void);
+
+void free_rmid_lru_list(void);
+
int alloc_rmid(u32 closid);
void free_rmid(u32 closid, u32 rmid);
--- a/fs/resctrl/monitor.c
+++ b/fs/resctrl/monitor.c
@@ -862,20 +862,29 @@ void mbm_setup_overflow_handler(struct r
schedule_delayed_work_on(cpu, &dom->mbm_over, delay);
}
-static int dom_data_init(struct rdt_resource *r)
+int setup_rmid_lru_list(void)
{
- u32 idx_limit = resctrl_arch_system_num_rmid_idx();
struct rmid_entry *entry = NULL;
- int err = 0, i;
+ u32 idx_limit;
u32 idx;
+ int i;
- mutex_lock(&rdtgroup_mutex);
+ if (!resctrl_arch_mon_capable())
+ return 0;
+ /*
+ * Called on every mount, but the number of RMIDs cannot change
+ * after the first mount, so keep using the same set of rmid_ptrs[]
+ * until resctrl_exit(). Note that the limbo handler continues to
+ * access rmid_ptrs[] after resctrl is unmounted.
+ */
+ if (rmid_ptrs)
+ return 0;
+
+ idx_limit = resctrl_arch_system_num_rmid_idx();
rmid_ptrs = kcalloc(idx_limit, sizeof(struct rmid_entry), GFP_KERNEL);
- if (!rmid_ptrs) {
- err = -ENOMEM;
- goto out_unlock;
- }
+ if (!rmid_ptrs)
+ return -ENOMEM;
for (i = 0; i < idx_limit; i++) {
entry = &rmid_ptrs[i];
@@ -888,30 +897,24 @@ static int dom_data_init(struct rdt_reso
/*
* RESCTRL_RESERVED_CLOSID and RESCTRL_RESERVED_RMID are special and
* are always allocated. These are used for the rdtgroup_default
- * control group, which will be setup later in resctrl_init().
+ * control group, which was setup earlier in rdtgroup_setup_default().
*/
idx = resctrl_arch_rmid_idx_encode(RESCTRL_RESERVED_CLOSID,
RESCTRL_RESERVED_RMID);
entry = __rmid_entry(idx);
list_del(&entry->list);
-out_unlock:
- mutex_unlock(&rdtgroup_mutex);
-
- return err;
+ return 0;
}
-static void dom_data_exit(struct rdt_resource *r)
+void free_rmid_lru_list(void)
{
- mutex_lock(&rdtgroup_mutex);
-
- if (!r->mon_capable)
- goto out_unlock;
+ if (!resctrl_arch_mon_capable())
+ return;
+ mutex_lock(&rdtgroup_mutex);
kfree(rmid_ptrs);
rmid_ptrs = NULL;
-
-out_unlock:
mutex_unlock(&rdtgroup_mutex);
}
@@ -1773,7 +1776,8 @@ static void closid_num_dirty_rmid_free(v
* resctrl_l3_mon_resource_init() - Initialise global monitoring structures.
*
* Allocate and initialise global monitor resources that do not belong to a
- * specific domain. i.e. the rmid_ptrs[] used for the limbo and free lists.
+ * specific domain. i.e. the closid_num_dirty_rmid[] used to find the CLOSID
+ * with the cleanest set of RMIDs.
* Called once during boot after the struct rdt_resource's have been configured
* but before the filesystem is mounted.
* Resctrl's cpuhp callbacks may be called before this point to bring a domain
@@ -1793,12 +1797,6 @@ int resctrl_l3_mon_resource_init(void)
if (ret)
return ret;
- ret = dom_data_init(r);
- if (ret) {
- closid_num_dirty_rmid_free();
- return ret;
- }
-
if (resctrl_arch_is_evt_configurable(QOS_L3_MBM_TOTAL_EVENT_ID)) {
mon_event_all[QOS_L3_MBM_TOTAL_EVENT_ID].configurable = true;
resctrl_file_fflags_init("mbm_total_bytes_config",
@@ -1845,6 +1843,4 @@ void resctrl_l3_mon_resource_exit(void)
return;
closid_num_dirty_rmid_free();
-
- dom_data_exit(r);
}
--- a/fs/resctrl/rdtgroup.c
+++ b/fs/resctrl/rdtgroup.c
@@ -2732,6 +2732,10 @@ static int rdt_get_tree(struct fs_contex
goto out;
}
+ ret = setup_rmid_lru_list();
+ if (ret)
+ goto out;
+
ret = rdtgroup_setup_root(ctx);
if (ret)
goto out;
@@ -4518,4 +4522,5 @@ void resctrl_exit(void)
*/
resctrl_l3_mon_resource_exit();
+ free_rmid_lru_list();
}
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 654/675] fs/resctrl: Fix use-after-free during unmount
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (652 preceding siblings ...)
2026-07-30 14:16 ` [PATCH 6.18 653/675] fs/resctrl: Move RMID initialization to first mount Greg Kroah-Hartman
@ 2026-07-30 14:16 ` Greg Kroah-Hartman
2026-07-30 14:16 ` [PATCH 6.18 655/675] net: mana: Validate the packet length reported by the NIC Greg Kroah-Hartman
` (25 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:16 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Sashiko, Tony Luck, Reinette Chatre,
Borislav Petkov (AMD), Chen Yu, stable, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Tony Luck <tony.luck@intel.com>
[ Upstream commit 52fce648607e0d6a76eeb443d78708c49df1c554 ]
During unmount or failure teardown all mon_data structures that contain
monitoring event file private data are freed after which kernfs nodes are
removed. However, the RDT_DELETED flag is never set for the statically
allocated default resource group.
A concurrent reader of an event file associated with the default resource
group may, after dropping kernfs active protection, block on rdtgroup_mutex
while unmount proceeds to free the file private data and destroy the kernfs
node without waiting for the reader.
When the mutex is released, the reader wakes up, observes that RDT_DELETED
is not set for the default group, and dereferences the already-freed
file private data.
The scenario can be depicted as follows:
CPU0 CPU1
/*
* Default resource group's
* monitoring data accessible via
* kernfs file with kernfs_node::priv
* pointing to a struct mon_data.
* User opens the file for reading.
*/
rdtgroup_mondata_show() /* arch encounters fatal error */
rdtgroup_kn_lock_live() resctrl_exit()
atomic_inc(&rdtgroup_default.waitcount) cpus_read_lock()
kernfs_break_active_protection(kn) mutex_lock(&rdtgroup_mutex)
cpus_read_lock() resctrl_fs_teardown()
mutex_lock(&rdtgroup_mutex) rmdir_all_sub()
mon_put_kn_priv()
/* Delete all mon_data structures */
rdtgroup_destroy_root()
kernfs_destroy_root()
rdtgroup_default.kn = NULL
mutex_unlock(&rdtgroup_mutex)
/*
* rdtgroup_default.flags is empty so
* rdtgroup_kn_lock_live() returns
* &rdtgroup_default
*/
md = of->kn->priv;
/* md points to freed mon_data */
Set RDT_DELETED for the default group unconditionally since the flag does
not lead to the freeing of this statically allocated group.
Do not allow a new resctrl mount if there are any waiters on default group
of previous mount. A new mount will re-initialize the default group that
would appear to waiters from previous mount as though the default group is
accessible causing them to access the mon_data structures from the previous
mount that have been removed.
Fixes: 2a6566038544 ("x86/resctrl: Expand the width of domid by replacing mon_data_bits")
Closes: https://sashiko.dev/#/patchset/20260508182143.14592-1-tony.luck%40intel.com?part=2 [1]
Reported-by: Sashiko <sashiko-bot@kernel.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Chen Yu <yu.c.chen@intel.com>
Cc: <stable@kernel.org>
Link: https://patch.msgid.link/49a2ca3ca688f27e1a646cf90e1dc69287021127.1783377598.git.reinette.chatre@intel.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/resctrl/rdtgroup.c | 18 ++++++++++++++++--
1 file changed, 16 insertions(+), 2 deletions(-)
--- a/fs/resctrl/rdtgroup.c
+++ b/fs/resctrl/rdtgroup.c
@@ -581,14 +581,20 @@ unlock:
*
* On resource group creation via a mkdir, an extra kernfs_node reference is
* taken to ensure that the rdtgroup structure remains accessible for the
- * rdtgroup_kn_unlock() calls where it is removed.
+ * rdtgroup_kn_unlock() calls where it is removed. The default group is
+ * statically allocated: it does not have an extra reference but will have
+ * RDT_DELETED set on unmount to support safe access to its associated files
+ * via rdtgroup_kn_lock_live/rdtgroup_kn_unlock().
*
- * Drop the extra reference here, then free the rdtgroup structure.
+ * For all but the default group: drop the extra reference, then free the
+ * rdtgroup structure.
*
* Return: void
*/
static void rdtgroup_remove(struct rdtgroup *rdtgrp)
{
+ if (rdtgrp == &rdtgroup_default)
+ return;
kernfs_put(rdtgrp->kn);
kfree(rdtgrp);
}
@@ -2732,6 +2738,12 @@ static int rdt_get_tree(struct fs_contex
goto out;
}
+ /* Avoid races from pending operations from a previous mount */
+ if (atomic_read(&rdtgroup_default.waitcount) != 0) {
+ ret = -EBUSY;
+ goto out;
+ }
+
ret = setup_rmid_lru_list();
if (ret)
goto out;
@@ -3094,6 +3106,7 @@ static void resctrl_fs_teardown(void)
mon_put_kn_priv();
rdt_pseudo_lock_release();
rdtgroup_default.mode = RDT_MODE_SHAREABLE;
+ rdtgroup_default.flags = RDT_DELETED;
closid_exit();
schemata_list_destroy();
rdtgroup_destroy_root();
@@ -4148,6 +4161,7 @@ static int rdtgroup_setup_root(struct rd
ctx->kfc.root = rdt_root;
rdtgroup_default.kn = kernfs_root_to_node(rdt_root);
+ rdtgroup_default.flags = 0;
return 0;
}
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 655/675] net: mana: Validate the packet length reported by the NIC
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (653 preceding siblings ...)
2026-07-30 14:16 ` [PATCH 6.18 654/675] fs/resctrl: Fix use-after-free during unmount Greg Kroah-Hartman
@ 2026-07-30 14:16 ` Greg Kroah-Hartman
2026-07-30 14:16 ` [PATCH 6.18 656/675] net: mana: Optimize irq affinity for low vcpu configs Greg Kroah-Hartman
` (24 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:16 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Haiyang Zhang, Dexuan Cui,
Paolo Abeni, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Dexuan Cui <decui@microsoft.com>
[ Upstream commit 2e2a83b4998af4384e677d3b2ac08565274279bf ]
Validate the packet length reported in the RX CQE before passing it
to skb processing. The CQE is supplied by the NIC device and should
not be blindly trusted.
Cc: stable@vger.kernel.org
Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Dexuan Cui <decui@microsoft.com>
Fixes: ca9c54d2d6a5 ("net: mana: Add a driver for Microsoft Azure Network Adapter (MANA)")
Link: https://patch.msgid.link/20260702041237.617719-2-decui@microsoft.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/ethernet/microsoft/mana/mana_en.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
--- a/drivers/net/ethernet/microsoft/mana/mana_en.c
+++ b/drivers/net/ethernet/microsoft/mana/mana_en.c
@@ -2160,6 +2160,19 @@ static void mana_process_rx_cqe(struct m
rxbuf_oob = &rxq->rx_oobs[curr];
WARN_ON_ONCE(rxbuf_oob->wqe_inf.wqe_size_in_bu != 1);
+ if (unlikely(pktlen > rxq->datasize)) {
+ /* Increase it even if mana_rx_skb() isn't called. */
+ rxq->rx_cq.work_done++;
+
+ ++ndev->stats.rx_dropped;
+ netdev_warn_once(ndev,
+ "Dropped oversized RX packet: len=%u, datasize=%u\n",
+ pktlen, rxq->datasize);
+
+ /* Reuse the RX buffer since rxbuf_oob is unchanged. */
+ goto drop;
+ }
+
mana_refill_rx_oob(dev, rxq, rxbuf_oob, &old_buf, &old_fp);
/* Unsuccessful refill will have old_buf == NULL.
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 656/675] net: mana: Optimize irq affinity for low vcpu configs
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (654 preceding siblings ...)
2026-07-30 14:16 ` [PATCH 6.18 655/675] net: mana: Validate the packet length reported by the NIC Greg Kroah-Hartman
@ 2026-07-30 14:16 ` Greg Kroah-Hartman
2026-07-30 14:16 ` [PATCH 6.18 657/675] octeontx2-af: validate body pcifunc in rvu_mbox_handler_rep_event_notify Greg Kroah-Hartman
` (23 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:16 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Erni Sri Satya Vennela,
Shradha Gupta, Haiyang Zhang, Simon Horman, Yury Norov,
Jakub Kicinski, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Shradha Gupta <shradhagupta@linux.microsoft.com>
[ Upstream commit 5316394b1752f6cf3f9901e7fefdec1cd1d97fd3 ]
Before the commit 755391121038 ("net: mana: Allocate MSI-X vectors
dynamically"), all the MANA IRQs were assigned statically and together
during early driver load.
After this commit, the IRQ allocation for MANA was done in two phases.
HWC IRQ allocated earlier and then, queue IRQs dynamically added at a
later point. By this time, the IRQ weights on vCPUs can become imbalanced
and if IRQ count is greater than the vCPU count the topology aware IRQ
distribution logic in MANA can cause multiple MANA IRQs to land on the
same vCPUs, while other sibling vCPUs have none (case 1).
On SMP enabled, low-vCPU systems, this becomes a bigger problem as the
softIRQ handling overhead of two IRQs on the same vCPUs becomes much more
than their overheads if they were spread across sibling vCPUs.
In such cases when many parallel TCP connections are tested, the
throughput drops significantly.
Fix the affinity assignment logic, in cases where the IRQ count is greater
than the vCPU count and when IRQs are added dynamically, by utilizing all
the vCPUs irrespective of their NUMA/core bindings (case 2).
The results of setting the affinity and hint to NULL were also studied,
and we observed that, with this logic if there are pre-existing IRQs
allocated on the VM (apart from MANA), during MANA IRQs allocation, it
leads to clustering of the MANA queue IRQs again (case 3).
=======================================================
Case 1: without this patch
=======================================================
4 vcpu(2 cores), 5 MANA IRQs (1 HWC + 4 Queue)
TYPE effective vCPU aff
=======================================================
IRQ0: HWC 0
IRQ1: mana_q1 0
IRQ2: mana_q2 2
IRQ3: mana_q3 0
IRQ4: mana_q4 3
%soft on each vCPU(mpstat -P ALL 1) on receiver
vCPU 0 1 2 3
=======================================================
pass 1: 38.85 0.03 24.89 24.65
pass 2: 39.15 0.03 24.57 25.28
pass 3: 40.36 0.03 23.20 23.17
=======================================================
Case 2: with this patch
=======================================================
4 vcpu(2 cores), 5 MANA IRQs (1 HWC + 4 Queue)
TYPE effective vCPU aff
=======================================================
IRQ0: HWC 0
IRQ1: mana_q1 0
IRQ2: mana_q2 1
IRQ3: mana_q3 2
IRQ4: mana_q4 3
%soft on each vCPU(mpstat -P ALL 1) on receiver
vCPU 0 1 2 3
=======================================================
pass 1: 15.42 15.85 14.99 14.51
pass 2: 15.53 15.94 15.81 15.93
pass 3: 16.41 16.35 16.40 16.36
=======================================================
Case 3: with affinity set to NULL
=======================================================
4 vCPU(2 cores), 5 MANA IRQs (1 HWC + 4 Queue)
TYPE effective vCPU aff
=======================================================
IRQ0: HWC 0
IRQ1: mana_q1 2
IRQ2: mana_q2 3
IRQ3: mana_q3 2
IRQ4: mana_q4 3
=======================================================
Throughput Impact(in Gbps, same env)
=======================================================
TCP conn with patch w/o patch aff NULL
20480 15.65 7.73 5.25
10240 15.63 8.93 5.77
8192 15.64 9.69 7.16
6144 15.64 13.16 9.33
4096 15.69 15.75 13.50
2048 15.69 15.83 13.61
1024 15.71 15.28 13.60
Fixes: 755391121038 ("net: mana: Allocate MSI-X vectors dynamically")
Cc: stable@vger.kernel.org
Co-developed-by: Erni Sri Satya Vennela <ernis@linux.microsoft.com>
Signed-off-by: Erni Sri Satya Vennela <ernis@linux.microsoft.com>
Signed-off-by: Shradha Gupta <shradhagupta@linux.microsoft.com>
Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Reviewed-by: Yury Norov <ynorov@nvidia.com>
Link: https://patch.msgid.link/20260624072138.1632849-1-shradhagupta@linux.microsoft.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
[ Kept 7.1's `int *irqs, irq, err, i;` declaration (minus the deleted `skip_first_cpu`) instead of upstream's `msi` variant, as this tree lacks the `mana_gd_get_gic()` refactor. ]
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/ethernet/microsoft/mana/gdma_main.c | 78 +++++++++++++++++++-----
1 file changed, 64 insertions(+), 14 deletions(-)
--- a/drivers/net/ethernet/microsoft/mana/gdma_main.c
+++ b/drivers/net/ethernet/microsoft/mana/gdma_main.c
@@ -125,6 +125,8 @@ static int mana_gd_query_max_resources(s
} else {
/* If dynamic allocation is enabled we have already allocated
* hwc msi
+ * Also, we make sure in this case the following is always true
+ * (num_msix_usable - 1 HWC) <= num_online_cpus()
*/
gc->num_msix_usable = min(resp.max_msix, num_online_cpus() + 1);
}
@@ -1587,8 +1589,8 @@ void mana_gd_free_res_map(struct gdma_re
* do the same thing.
*/
-static int irq_setup(unsigned int *irqs, unsigned int len, int node,
- bool skip_first_cpu)
+static int mana_irq_setup_numa_aware(unsigned int *irqs, unsigned int len,
+ int node, bool skip_first_cpu)
{
const struct cpumask *next, *prev = cpu_none_mask;
cpumask_var_t cpus __free(free_cpumask_var);
@@ -1624,11 +1626,24 @@ done:
return 0;
}
+/* must be called with cpus_read_lock() held */
+static void mana_irq_setup_linear(unsigned int *irqs, unsigned int len)
+{
+ int cpu;
+
+ for_each_online_cpu(cpu) {
+ if (len == 0)
+ break;
+
+ irq_set_affinity_and_hint(*irqs++, cpumask_of(cpu));
+ len--;
+ }
+}
+
static int mana_gd_setup_dyn_irqs(struct pci_dev *pdev, int nvec)
{
struct gdma_context *gc = pci_get_drvdata(pdev);
struct gdma_irq_context *gic;
- bool skip_first_cpu = false;
int *irqs, irq, err, i;
irqs = kmalloc_array(nvec, sizeof(int), GFP_KERNEL);
@@ -1636,10 +1651,12 @@ static int mana_gd_setup_dyn_irqs(struct
return -ENOMEM;
/*
+ * In this function, num_msix_usable = HWC IRQ + Queue IRQ.
+ * nvec is only Queue IRQ (HWC already setup).
* While processing the next pci irq vector, we start with index 1,
* as IRQ vector at index 0 is already processed for HWC.
* However, the population of irqs array starts with index 0, to be
- * further used in irq_setup()
+ * further used in mana_irq_setup_numa_aware()
*/
for (i = 1; i <= nvec; i++) {
gic = kzalloc(sizeof(*gic), GFP_KERNEL);
@@ -1669,18 +1686,51 @@ static int mana_gd_setup_dyn_irqs(struct
}
/*
- * When calling irq_setup() for dynamically added IRQs, if number of
- * CPUs is more than or equal to allocated MSI-X, we need to skip the
- * first CPU sibling group since they are already affinitized to HWC IRQ
+ * When calling mana_irq_setup_numa_aware() for dynamically added IRQs,
+ * if number of CPUs is more than or equal to allocated MSI-X, we need to
+ * skip the first CPU sibling group since they are already affinitized to
+ * HWC IRQ
*/
cpus_read_lock();
- if (gc->num_msix_usable <= num_online_cpus())
- skip_first_cpu = true;
+ if (gc->num_msix_usable <= num_online_cpus()) {
+ err = mana_irq_setup_numa_aware(irqs, nvec, gc->numa_node,
+ true);
+ if (err) {
+ cpus_read_unlock();
+ goto free_irq;
+ }
+ } else {
+ /*
+ * When num_msix_usable are more than num_online_cpus, our
+ * queue IRQs should be equal to num of online vCPUs.
+ * We try to make sure queue IRQs spread across all vCPUs.
+ * In such a case NUMA or CPU core affinity does not matter.
+ * Note: in this case the total mana IRQ should always be
+ * num_online_cpus + 1. The first HWC IRQ is already handled
+ * in HWC setup calls
+ * However, if CPUs went offline since num_msix_usable was
+ * computed, queue IRQs will be more than num_online_cpus().
+ * In such cases remaining extra IRQs will retain their default
+ * affinity.
+ */
+ int first_unassigned = num_online_cpus();
- err = irq_setup(irqs, nvec, gc->numa_node, skip_first_cpu);
- if (err) {
- cpus_read_unlock();
- goto free_irq;
+ if (nvec > first_unassigned) {
+ char buf[32];
+
+ if (first_unassigned == nvec - 1)
+ snprintf(buf, sizeof(buf), "%d",
+ first_unassigned);
+ else
+ snprintf(buf, sizeof(buf), "%d-%d",
+ first_unassigned, nvec - 1);
+
+ dev_dbg(&pdev->dev,
+ "MANA IRQ indices #%s will retain the default CPU affinity\n",
+ buf);
+ }
+
+ mana_irq_setup_linear(irqs, nvec);
}
cpus_read_unlock();
@@ -1766,7 +1816,7 @@ static int mana_gd_setup_irqs(struct pci
nvec -= 1;
}
- err = irq_setup(irqs, nvec, gc->numa_node, false);
+ err = mana_irq_setup_numa_aware(irqs, nvec, gc->numa_node, false);
if (err) {
cpus_read_unlock();
goto free_irq;
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 657/675] octeontx2-af: validate body pcifunc in rvu_mbox_handler_rep_event_notify
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (655 preceding siblings ...)
2026-07-30 14:16 ` [PATCH 6.18 656/675] net: mana: Optimize irq affinity for low vcpu configs Greg Kroah-Hartman
@ 2026-07-30 14:16 ` Greg Kroah-Hartman
2026-07-30 14:16 ` [PATCH 6.18 658/675] octeontx2-af: cn10k: restrict VF LMTLINE sharing to its own PF Greg Kroah-Hartman
` (22 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:16 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Michael Bommarito, Jakub Kicinski,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Michael Bommarito <michael.bommarito@gmail.com>
[ Upstream commit 2156a29aecfffa2eb7c558255690084efbe9f3b0 ]
rvu_mbox_handler_rep_event_notify() in drivers/net/ethernet/marvell/
octeontx2/af/rvu_rep.c queues a sender-controlled REP_EVENT_NOTIFY
request body verbatim, and rvu_rep_up_notify() then forwards
event->pcifunc (the nested body field, distinct from the
AF-normalised header pcifunc) into rvu_get_pfvf(), rvu_get_pf() and
the AF->PF mailbox device index without any bounds check.
A VF attached to a PF that has been put into switchdev
representor mode reaches this path: the VF mailbox handler
otx2_pfvf_mbox_handler() forwards every message id including
MBOX_MSG_REP_EVENT_NOTIFY to AF without an allowlist, and the AF
dispatcher rewrites only msg->pcifunc, leaving struct
rep_event::pcifunc attacker-controlled. The sibling
rvu_mbox_handler_esw_cfg() refuses requests whose header pcifunc
is not rvu->rep_pcifunc; this handler has no equivalent gate.
An out-of-range body pcifunc selects an &rvu->pf[]/&rvu->hwvf[]
element past the allocated array and, for RVU_EVENT_MAC_ADDR_CHANGE,
turns into a six-byte attacker-chosen OOB ether_addr_copy() target
inside the queued worker; KASAN reports a slab-out-of-bounds write
in rvu_rep_wq_handler.
Reject malformed requests at the handler entry by gating on
is_pf_func_valid(), which is already the canonical PF/VF range check
in this driver; expose it via rvu.h so callers in rvu_rep.c can use
it instead of open-coding the same range arithmetic.
Fixes: b8fea84a0468 ("octeontx2-pf: Add support to sync link state between representor and VFs")
Cc: stable@vger.kernel.org
Signed-off-by: Michael Bommarito <michael.bommarito@gmail.com>
Link: https://patch.msgid.link/20260520154157.1439319-1-michael.bommarito@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Stable-dep-of: 8cdcf3d2caac ("octeontx2-af: cn10k: restrict VF LMTLINE sharing to its own PF")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/ethernet/marvell/octeontx2/af/rvu.c | 2 +-
drivers/net/ethernet/marvell/octeontx2/af/rvu.h | 1 +
drivers/net/ethernet/marvell/octeontx2/af/rvu_rep.c | 8 ++++++++
3 files changed, 10 insertions(+), 1 deletion(-)
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu.c
@@ -435,7 +435,7 @@ struct rvu_pfvf *rvu_get_pfvf(struct rvu
return &rvu->pf[rvu_get_pf(rvu->pdev, pcifunc)];
}
-static bool is_pf_func_valid(struct rvu *rvu, u16 pcifunc)
+bool is_pf_func_valid(struct rvu *rvu, u16 pcifunc)
{
int pf, vf, nvfs;
u64 cfg;
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu.h
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu.h
@@ -900,6 +900,7 @@ u16 rvu_get_rsrc_mapcount(struct rvu_pfv
struct rvu_pfvf *rvu_get_pfvf(struct rvu *rvu, int pcifunc);
void rvu_get_pf_numvfs(struct rvu *rvu, int pf, int *numvfs, int *hwvf);
bool is_block_implemented(struct rvu_hwinfo *hw, int blkaddr);
+bool is_pf_func_valid(struct rvu *rvu, u16 pcifunc);
bool is_pffunc_map_valid(struct rvu *rvu, u16 pcifunc, int blktype);
int rvu_get_lf(struct rvu *rvu, struct rvu_block *block, u16 pcifunc, u16 slot);
int rvu_lf_reset(struct rvu *rvu, struct rvu_block *block, int lf);
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_rep.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_rep.c
@@ -97,6 +97,14 @@ int rvu_mbox_handler_rep_event_notify(st
{
struct rep_evtq_ent *qentry;
+ /* The mailbox dispatcher normalises only the header pcifunc; the
+ * nested struct rep_event::pcifunc body field is sender-controlled
+ * and is later used by rvu_rep_up_notify() to index rvu->pf[] /
+ * rvu->hwvf[]. Reject out-of-range body selectors before queueing.
+ */
+ if (!is_pf_func_valid(rvu, req->pcifunc))
+ return -EINVAL;
+
qentry = kmalloc(sizeof(*qentry), GFP_ATOMIC);
if (!qentry)
return -ENOMEM;
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 658/675] octeontx2-af: cn10k: restrict VF LMTLINE sharing to its own PF
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (656 preceding siblings ...)
2026-07-30 14:16 ` [PATCH 6.18 657/675] octeontx2-af: validate body pcifunc in rvu_mbox_handler_rep_event_notify Greg Kroah-Hartman
@ 2026-07-30 14:16 ` Greg Kroah-Hartman
2026-07-30 14:16 ` [PATCH 6.18 659/675] bootconfig: move xbc_snprint_cmdline() to lib/bootconfig.c Greg Kroah-Hartman
` (21 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:16 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Yuhao Jiang, Junrui Luo,
Jakub Kicinski, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Junrui Luo <moonafterrain@outlook.com>
[ Upstream commit 8cdcf3d2caacdee7ddd363705fb4d93b0c1a0915 ]
rvu_mbox_handler_lmtst_tbl_setup() uses req->base_pcifunc as a direct
index into the LMT map table to read another function's LMTLINE
physical base address and copy it into the caller's own LMT map table
entry. The mailbox dispatcher authenticates req->hdr.pcifunc from the
IRQ source, but req->base_pcifunc is a separate payload field and is
not sanitized.
Reject the request with -EPERM when a VF caller's base_pcifunc is not a
valid function under its own PF. is_pf_func_valid() bounds the FUNC field
to the PF's configured VF count, keeping the computed index inside the
caller's own slot block.
Fixes: 893ae97214c3 ("octeontx2-af: cn10k: Support configurable LMTST regions")
Reported-by: Yuhao Jiang <danisjiang@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Junrui Luo <moonafterrain@outlook.com>
Link: https://patch.msgid.link/SYBPR01MB78811656934E713B77DA6CEDAFE62@SYBPR01MB7881.ausprd01.prod.outlook.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/ethernet/marvell/octeontx2/af/rvu_cn10k.c | 9 +++++++++
1 file changed, 9 insertions(+)
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_cn10k.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_cn10k.c
@@ -178,6 +178,15 @@ int rvu_mbox_handler_lmtst_tbl_setup(str
* pcifunc (will be the one who is calling this mailbox).
*/
if (req->base_pcifunc) {
+ /* A VF is untrusted and must not redirect its LMTLINE to
+ * another PF's region, so confine VF callers to their own PF.
+ */
+ if (is_vf(req->hdr.pcifunc) &&
+ (!is_pf_func_valid(rvu, req->base_pcifunc) ||
+ rvu_get_pf(rvu->pdev, req->hdr.pcifunc) !=
+ rvu_get_pf(rvu->pdev, req->base_pcifunc)))
+ return -EPERM;
+
/* Calculating the LMT table index equivalent to primary
* pcifunc.
*/
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 659/675] bootconfig: move xbc_snprint_cmdline() to lib/bootconfig.c
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (657 preceding siblings ...)
2026-07-30 14:16 ` [PATCH 6.18 658/675] octeontx2-af: cn10k: restrict VF LMTLINE sharing to its own PF Greg Kroah-Hartman
@ 2026-07-30 14:16 ` Greg Kroah-Hartman
2026-07-30 14:16 ` [PATCH 6.18 660/675] bootconfig: fix NULL-pointer arithmetic in xbc_snprint_cmdline() Greg Kroah-Hartman
` (20 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:16 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Breno Leitao,
Masami Hiramatsu (Google), Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Breno Leitao <leitao@debian.org>
[ Upstream commit 5a643e4623238e14b03d75ca0d4eda0645720cee ]
Move xbc_snprint_cmdline() from init/main.c to lib/bootconfig.c so the
function (and its xbc_namebuf scratch buffer) becomes part of the shared
parser library. tools/bootconfig already compiles lib/bootconfig.c
directly, which lets a follow-up patch reuse the same renderer in the
userspace tool to convert a bootconfig file into a flat cmdline string
at build time.
No functional change.
Link: https://lore.kernel.org/all/20260508-bootconfig_using_tools-v1-1-1132219aa773@debian.org/
Signed-off-by: Breno Leitao <leitao@debian.org>
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Stable-dep-of: dec4d8118c17 ("bootconfig: fix NULL-pointer arithmetic in xbc_snprint_cmdline()")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
include/linux/bootconfig.h | 3 ++
init/main.c | 45 ------------------------------------
lib/bootconfig.c | 56 +++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 59 insertions(+), 45 deletions(-)
--- a/include/linux/bootconfig.h
+++ b/include/linux/bootconfig.h
@@ -265,6 +265,9 @@ static inline struct xbc_node * __init x
int __init xbc_node_compose_key_after(struct xbc_node *root,
struct xbc_node *node, char *buf, size_t size);
+/* Render key/value pairs under @root as a flat cmdline string */
+int __init xbc_snprint_cmdline(char *buf, size_t size, struct xbc_node *root);
+
/**
* xbc_node_compose_key() - Compose full key string of the XBC node
* @node: An XBC node.
--- a/init/main.c
+++ b/init/main.c
@@ -320,51 +320,6 @@ static void * __init get_boot_config_fro
#ifdef CONFIG_BOOT_CONFIG
-static char xbc_namebuf[XBC_KEYLEN_MAX] __initdata;
-
-#define rest(dst, end) ((end) > (dst) ? (end) - (dst) : 0)
-
-static int __init xbc_snprint_cmdline(char *buf, size_t size,
- struct xbc_node *root)
-{
- struct xbc_node *knode, *vnode;
- char *end = buf + size;
- const char *val, *q;
- int ret;
-
- xbc_node_for_each_key_value(root, knode, val) {
- ret = xbc_node_compose_key_after(root, knode,
- xbc_namebuf, XBC_KEYLEN_MAX);
- if (ret < 0)
- return ret;
-
- vnode = xbc_node_get_child(knode);
- if (!vnode) {
- ret = snprintf(buf, rest(buf, end), "%s ", xbc_namebuf);
- if (ret < 0)
- return ret;
- buf += ret;
- continue;
- }
- xbc_array_for_each_value(vnode, val) {
- /*
- * For prettier and more readable /proc/cmdline, only
- * quote the value when necessary, i.e. when it contains
- * whitespace.
- */
- q = strpbrk(val, " \t\r\n") ? "\"" : "";
- ret = snprintf(buf, rest(buf, end), "%s=%s%s%s ",
- xbc_namebuf, q, val, q);
- if (ret < 0)
- return ret;
- buf += ret;
- }
- }
-
- return buf - (end - size);
-}
-#undef rest
-
/* Make an extra command line under given key word */
static char * __init xbc_make_cmdline(const char *key)
{
--- a/lib/bootconfig.c
+++ b/lib/bootconfig.c
@@ -405,6 +405,62 @@ const char * __init xbc_node_find_next_k
return ""; /* No value key */
}
+static char xbc_namebuf[XBC_KEYLEN_MAX] __initdata;
+
+#define rest(dst, end) ((end) > (dst) ? (end) - (dst) : 0)
+
+/**
+ * xbc_snprint_cmdline() - Render bootconfig keys under @root as a cmdline string
+ * @buf: Destination buffer (may be NULL when @size is 0 to query the length)
+ * @size: Size of @buf in bytes
+ * @root: Subtree root whose key=value pairs should be rendered
+ *
+ * Walk all key/value pairs under @root and emit them as a space-separated
+ * cmdline string into @buf. Values containing whitespace are quoted with
+ * double quotes. Returns the number of bytes that would be written if @buf
+ * were large enough (matching snprintf semantics), or a negative errno on
+ * failure.
+ */
+int __init xbc_snprint_cmdline(char *buf, size_t size, struct xbc_node *root)
+{
+ struct xbc_node *knode, *vnode;
+ char *end = buf + size;
+ const char *val, *q;
+ int ret;
+
+ xbc_node_for_each_key_value(root, knode, val) {
+ ret = xbc_node_compose_key_after(root, knode,
+ xbc_namebuf, XBC_KEYLEN_MAX);
+ if (ret < 0)
+ return ret;
+
+ vnode = xbc_node_get_child(knode);
+ if (!vnode) {
+ ret = snprintf(buf, rest(buf, end), "%s ", xbc_namebuf);
+ if (ret < 0)
+ return ret;
+ buf += ret;
+ continue;
+ }
+ xbc_array_for_each_value(vnode, val) {
+ /*
+ * For prettier and more readable /proc/cmdline, only
+ * quote the value when necessary, i.e. when it contains
+ * whitespace.
+ */
+ q = strpbrk(val, " \t\r\n") ? "\"" : "";
+ ret = snprintf(buf, rest(buf, end), "%s=%s%s%s ",
+ xbc_namebuf, q, val, q);
+ if (ret < 0)
+ return ret;
+ buf += ret;
+ }
+ }
+
+ return buf - (end - size);
+}
+#undef rest
+
/* XBC parse and tree build */
static int __init xbc_init_node(struct xbc_node *node, char *data, uint32_t flag)
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 660/675] bootconfig: fix NULL-pointer arithmetic in xbc_snprint_cmdline()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (658 preceding siblings ...)
2026-07-30 14:16 ` [PATCH 6.18 659/675] bootconfig: move xbc_snprint_cmdline() to lib/bootconfig.c Greg Kroah-Hartman
@ 2026-07-30 14:16 ` Greg Kroah-Hartman
2026-07-30 14:16 ` [PATCH 6.18 661/675] ata: libata-core: Reject an invalid concurrent positioning ranges count Greg Kroah-Hartman
` (19 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:16 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Breno Leitao,
Masami Hiramatsu (Google), Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Breno Leitao <leitao@debian.org>
[ Upstream commit dec4d8118c179b3d12bca7e609054c6011c4f2ce ]
xbc_snprint_cmdline() is meant to be called twice: first with
buf=NULL, size=0 to probe the rendered length, then with a real
buffer to fill it (the standard snprintf() two-pass pattern). The
probe call makes the function compute "buf + size" (NULL + 0) and,
on every iteration, advance "buf += ret" from that NULL base and
pass the result back into snprintf().
Pointer arithmetic on a NULL pointer is undefined behavior. It is
harmless in the in-kernel callers today, but the follow-up patches
run this same code in the userspace tools/bootconfig parser at kernel
build time, where host UBSan / FORTIFY_SOURCE abort the build.
Track a running written length (size_t) instead of mutating @buf, and
only form "buf + len" when @buf is non-NULL. snprintf(NULL, 0, ...)
is itself well defined and returns the would-be length, so the
two-pass "probe then fill" usage returns identical byte counts.
Link: https://lore.kernel.org/all/20260626-bootconfig_using_tools-v7-1-24ab72139c29@debian.org/
Fixes: 51887d03aca1 ("bootconfig: init: Allow admin to use bootconfig for kernel command line")
Cc: stable@vger.kernel.org
Signed-off-by: Breno Leitao <leitao@debian.org>
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
lib/bootconfig.c | 23 ++++++++++++++++-------
1 file changed, 16 insertions(+), 7 deletions(-)
--- a/lib/bootconfig.c
+++ b/lib/bootconfig.c
@@ -424,10 +424,18 @@ static char xbc_namebuf[XBC_KEYLEN_MAX]
int __init xbc_snprint_cmdline(char *buf, size_t size, struct xbc_node *root)
{
struct xbc_node *knode, *vnode;
- char *end = buf + size;
const char *val, *q;
+ size_t len = 0;
int ret;
+ /*
+ * Track the running written length rather than advancing @buf, so we
+ * never form "buf + size" or "buf += ret" while @buf is NULL (the
+ * size-probe call passes buf=NULL, size=0). NULL pointer arithmetic
+ * is undefined behavior and trips host UBSan / FORTIFY_SOURCE when
+ * this renderer runs at kernel build time. snprintf(NULL, 0, ...)
+ * itself is well defined and returns the would-be length.
+ */
xbc_node_for_each_key_value(root, knode, val) {
ret = xbc_node_compose_key_after(root, knode,
xbc_namebuf, XBC_KEYLEN_MAX);
@@ -436,10 +444,11 @@ int __init xbc_snprint_cmdline(char *buf
vnode = xbc_node_get_child(knode);
if (!vnode) {
- ret = snprintf(buf, rest(buf, end), "%s ", xbc_namebuf);
+ ret = snprintf(buf ? buf + len : NULL, rest(len, size),
+ "%s ", xbc_namebuf);
if (ret < 0)
return ret;
- buf += ret;
+ len += ret;
continue;
}
xbc_array_for_each_value(vnode, val) {
@@ -449,15 +458,15 @@ int __init xbc_snprint_cmdline(char *buf
* whitespace.
*/
q = strpbrk(val, " \t\r\n") ? "\"" : "";
- ret = snprintf(buf, rest(buf, end), "%s=%s%s%s ",
- xbc_namebuf, q, val, q);
+ ret = snprintf(buf ? buf + len : NULL, rest(len, size),
+ "%s=%s%s%s ", xbc_namebuf, q, val, q);
if (ret < 0)
return ret;
- buf += ret;
+ len += ret;
}
}
- return buf - (end - size);
+ return len;
}
#undef rest
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 661/675] ata: libata-core: Reject an invalid concurrent positioning ranges count
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (659 preceding siblings ...)
2026-07-30 14:16 ` [PATCH 6.18 660/675] bootconfig: fix NULL-pointer arithmetic in xbc_snprint_cmdline() Greg Kroah-Hartman
@ 2026-07-30 14:16 ` Greg Kroah-Hartman
2026-07-30 14:16 ` [PATCH 6.18 662/675] net: ipa: fix SMEM state handle leaks in SMP2P init Greg Kroah-Hartman
` (18 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:16 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Damien Le Moal, Bryam Vargas,
Niklas Cassel, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Bryam Vargas <hexlabsecurity@proton.me>
[ Upstream commit 533a0b940f901c15e5cbbd4b5d66e871c209e8ce ]
ata_dev_config_cpr() takes the number of range descriptors from buf[0]
of the concurrent positioning ranges log (up to 255), which the device
reports independently of the log size in the GPL directory. The count is
then walked at a fixed 32-byte stride in two places with no bound: the
log read here, and the INQUIRY VPD page B9h emitter, which writes one
descriptor per range into the fixed 2048-byte ata_scsi_rbuf. A device
reporting a count larger than its own log overflows the read buffer (up
to 7704 bytes past a 512-byte slab), and a count above 62 overflows the
response buffer on the emit side.
Bound the count once, on probe, against both the log the device returned
and the number of descriptors the VPD B9h response buffer can hold
(ATA_DEV_MAX_CPR, derived from the rbuf size). Reject an out-of-range
count with a warning; this keeps the emitter in bounds with no separate
change there.
Suggested-by: Damien Le Moal <dlemoal@kernel.org>
Fixes: fe22e1c2f705 ("libata: support concurrent positioning ranges log")
Fixes: c745dfc541e7 ("libata: fix reading concurrent positioning ranges log")
Cc: stable@vger.kernel.org
Signed-off-by: Bryam Vargas <hexlabsecurity@proton.me>
Reviewed-by: Niklas Cassel <cassel@kernel.org>
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
[ adapted `kzalloc_flex()` allocation to `kzalloc(struct_size(...), GFP_KERNEL)` and adjusted context offsets. ]
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/ata/libata-core.c | 18 ++++++++++++++++++
drivers/ata/libata-scsi.c | 2 --
drivers/ata/libata.h | 9 +++++++++
3 files changed, 27 insertions(+), 2 deletions(-)
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -2833,6 +2833,24 @@ static void ata_dev_config_cpr(struct at
if (!nr_cpr)
goto out;
+ /*
+ * The device reports the number of CPR descriptors independently of the
+ * log size, and that count is also used to emit VPD page B9h into the
+ * fixed-size rbuf. Reject a count larger than what that buffer can hold
+ * (ATA_DEV_MAX_CPR) or larger than the log the device actually returned.
+ */
+ if (nr_cpr > ATA_DEV_MAX_CPR) {
+ ata_dev_warn(dev,
+ "Too many concurrent positioning ranges\n");
+ goto out;
+ }
+
+ if (buf_len < 64 + (size_t)nr_cpr * 32) {
+ ata_dev_warn(dev,
+ "Invalid number of concurrent positioning ranges\n");
+ goto out;
+ }
+
cpr_log = kzalloc(struct_size(cpr_log, cpr, nr_cpr), GFP_KERNEL);
if (!cpr_log)
goto out;
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -37,8 +37,6 @@
#include "libata.h"
#include "libata-transport.h"
-#define ATA_SCSI_RBUF_SIZE 2048
-
static DEFINE_SPINLOCK(ata_scsi_rbuf_lock);
static u8 ata_scsi_rbuf[ATA_SCSI_RBUF_SIZE];
--- a/drivers/ata/libata.h
+++ b/drivers/ata/libata.h
@@ -144,6 +144,15 @@ static inline void ata_acpi_bind_dev(str
#endif
/* libata-scsi.c */
+#define ATA_SCSI_RBUF_SIZE 2048
+
+/*
+ * Maximum number of concurrent positioning ranges (CPR) supported. The ACS
+ * specifications allow up to 255, but we limit this to the number of CPR
+ * descriptors that fit in the rbuf buffer used to emit VPD page B9h.
+ */
+#define ATA_DEV_MAX_CPR min(255, ((ATA_SCSI_RBUF_SIZE - 64) / 32))
+
extern struct ata_device *ata_scsi_find_dev(struct ata_port *ap,
const struct scsi_device *scsidev);
extern int ata_scsi_add_hosts(struct ata_host *host,
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 662/675] net: ipa: fix SMEM state handle leaks in SMP2P init
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (660 preceding siblings ...)
2026-07-30 14:16 ` [PATCH 6.18 661/675] ata: libata-core: Reject an invalid concurrent positioning ranges count Greg Kroah-Hartman
@ 2026-07-30 14:16 ` Greg Kroah-Hartman
2026-07-30 14:16 ` [PATCH 6.18 663/675] pmdomain: imx93-blk-ctrl: convert to devm_* only Greg Kroah-Hartman
` (17 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:16 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Haoxiang Li, Larysa Zaremba,
Alex Elder, Jakub Kicinski, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Haoxiang Li <haoxiang_li2024@163.com>
[ Upstream commit 96ca1e658ae459276292bd6d971ab5d8c7e0379a ]
ipa_smp2p_init() acquires two Qualcomm SMEM state handles with
qcom_smem_state_get(). However, neither the init error paths
nor ipa_smp2p_exit() release them.
Release both handles with qcom_smem_state_put() in the init
error paths and in ipa_smp2p_exit().
Fixes: 530f9216a953 ("soc: qcom: ipa: AP/modem communications")
Cc: stable@vger.kernel.org
Signed-off-by: Haoxiang Li <haoxiang_li2024@163.com>
Reviewed-by: Larysa Zaremba <larysa.zaremba@intel.com>
Reviewed-by: Alex Elder <elder@riscstar.com>
Link: https://patch.msgid.link/20260624065955.2822765-1-haoxiang_li2024@163.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
[ kzalloc_obj() context line kept as kzalloc(sizeof(*smp2p), GFP_KERNEL) since ipa_smp2p.c was not yet converted in this tree ]
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/ipa/ipa_smp2p.c | 30 ++++++++++++++++++++++--------
1 file changed, 22 insertions(+), 8 deletions(-)
--- a/drivers/net/ipa/ipa_smp2p.c
+++ b/drivers/net/ipa/ipa_smp2p.c
@@ -234,19 +234,27 @@ ipa_smp2p_init(struct ipa *ipa, struct p
&valid_bit);
if (IS_ERR(valid_state))
return PTR_ERR(valid_state);
- if (valid_bit >= 32) /* BITS_PER_U32 */
- return -EINVAL;
+ if (valid_bit >= 32) { /* BITS_PER_U32 */
+ ret = -EINVAL;
+ goto err_valid_state_put;
+ }
enabled_state = qcom_smem_state_get(dev, "ipa-clock-enabled",
&enabled_bit);
- if (IS_ERR(enabled_state))
- return PTR_ERR(enabled_state);
- if (enabled_bit >= 32) /* BITS_PER_U32 */
- return -EINVAL;
+ if (IS_ERR(enabled_state)) {
+ ret = PTR_ERR(enabled_state);
+ goto err_valid_state_put;
+ }
+ if (enabled_bit >= 32) { /* BITS_PER_U32 */
+ ret = -EINVAL;
+ goto err_enabled_state_put;
+ }
smp2p = kzalloc(sizeof(*smp2p), GFP_KERNEL);
- if (!smp2p)
- return -ENOMEM;
+ if (!smp2p) {
+ ret = -ENOMEM;
+ goto err_enabled_state_put;
+ }
smp2p->ipa = ipa;
@@ -291,6 +299,10 @@ err_null_smp2p:
ipa->smp2p = NULL;
mutex_destroy(&smp2p->mutex);
kfree(smp2p);
+err_enabled_state_put:
+ qcom_smem_state_put(enabled_state);
+err_valid_state_put:
+ qcom_smem_state_put(valid_state);
return ret;
}
@@ -307,6 +319,8 @@ void ipa_smp2p_exit(struct ipa *ipa)
ipa_smp2p_power_release(ipa);
ipa->smp2p = NULL;
mutex_destroy(&smp2p->mutex);
+ qcom_smem_state_put(smp2p->enabled_state);
+ qcom_smem_state_put(smp2p->valid_state);
kfree(smp2p);
}
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 663/675] pmdomain: imx93-blk-ctrl: convert to devm_* only
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (661 preceding siblings ...)
2026-07-30 14:16 ` [PATCH 6.18 662/675] net: ipa: fix SMEM state handle leaks in SMP2P init Greg Kroah-Hartman
@ 2026-07-30 14:16 ` Greg Kroah-Hartman
2026-07-30 14:16 ` [PATCH 6.18 664/675] pmdomain: imx93-blk-ctrl: Extract PHY as shared domain for DSI/CSI Greg Kroah-Hartman
` (16 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:16 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Frank Li, Marco Felsch, Ulf Hansson,
Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Marco Felsch <m.felsch@pengutronix.de>
[ Upstream commit 52becc142280eeef828d19f9cd01fd653b588786 ]
Convert the driver to devm_ APIs only by making use of
devm_add_action_or_reset() and devm_pm_runtime_enable() to simplify the
probe error path and to drop the .remove() callback. This also ensures
that the device release order equals the device probe error path order.
Furthermore drop the dev_set_drvdata() usage since the only user was the
.remove() callback which is removed by this commit.
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Marco Felsch <m.felsch@pengutronix.de>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Stable-dep-of: 99611233f8cd ("pmdomain: imx93-blk-ctrl: Extract PHY as shared domain for DSI/CSI")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/pmdomain/imx/imx93-blk-ctrl.c | 66 ++++++++++++++--------------------
1 file changed, 29 insertions(+), 37 deletions(-)
--- a/drivers/pmdomain/imx/imx93-blk-ctrl.c
+++ b/drivers/pmdomain/imx/imx93-blk-ctrl.c
@@ -188,6 +188,20 @@ static int imx93_blk_ctrl_power_off(stru
return 0;
}
+static void imx93_release_genpd_provider(void *data)
+{
+ struct device_node *of_node = data;
+
+ of_genpd_del_provider(of_node);
+}
+
+static void imx93_release_pm_genpd(void *data)
+{
+ struct generic_pm_domain *genpd = data;
+
+ pm_genpd_remove(genpd);
+}
+
static struct lock_class_key blk_ctrl_genpd_lock_class;
static int imx93_blk_ctrl_probe(struct platform_device *pdev)
@@ -258,10 +272,8 @@ static int imx93_blk_ctrl_probe(struct p
domain->clks[j].id = data->clk_names[j];
ret = devm_clk_bulk_get(dev, data->num_clks, domain->clks);
- if (ret) {
- dev_err_probe(dev, ret, "failed to get clock\n");
- goto cleanup_pds;
- }
+ if (ret)
+ return dev_err_probe(dev, ret, "failed to get clock\n");
domain->genpd.name = data->name;
domain->genpd.power_on = imx93_blk_ctrl_power_on;
@@ -269,11 +281,12 @@ static int imx93_blk_ctrl_probe(struct p
domain->bc = bc;
ret = pm_genpd_init(&domain->genpd, NULL, true);
- if (ret) {
- dev_err_probe(dev, ret, "failed to init power domain\n");
- goto cleanup_pds;
- }
+ if (ret)
+ return dev_err_probe(dev, ret, "failed to init power domain\n");
+ ret = devm_add_action_or_reset(dev, imx93_release_pm_genpd, &domain->genpd);
+ if (ret)
+ return dev_err_probe(dev, ret, "failed to add pm_genpd release callback\n");
/*
* We use runtime PM to trigger power on/off of the upstream GPC
* domain, as a strict hierarchical parent/child power domain
@@ -290,39 +303,19 @@ static int imx93_blk_ctrl_probe(struct p
bc->onecell_data.domains[i] = &domain->genpd;
}
- pm_runtime_enable(dev);
+ ret = devm_pm_runtime_enable(dev);
+ if (ret)
+ return dev_err_probe(dev, ret, "failed to enable pm-runtime\n");
ret = of_genpd_add_provider_onecell(dev->of_node, &bc->onecell_data);
- if (ret) {
- dev_err_probe(dev, ret, "failed to add power domain provider\n");
- goto cleanup_pds;
- }
+ if (ret)
+ return dev_err_probe(dev, ret, "failed to add power domain provider\n");
- dev_set_drvdata(dev, bc);
+ ret = devm_add_action_or_reset(dev, imx93_release_genpd_provider, dev->of_node);
+ if (ret)
+ return dev_err_probe(dev, ret, "failed to add genpd_provider release callback\n");
return 0;
-
-cleanup_pds:
- for (i--; i >= 0; i--)
- pm_genpd_remove(&bc->domains[i].genpd);
-
- return ret;
-}
-
-static void imx93_blk_ctrl_remove(struct platform_device *pdev)
-{
- struct imx93_blk_ctrl *bc = dev_get_drvdata(&pdev->dev);
- int i;
-
- of_genpd_del_provider(pdev->dev.of_node);
-
- pm_runtime_disable(&pdev->dev);
-
- for (i = 0; i < bc->onecell_data.num_domains; i++) {
- struct imx93_blk_ctrl_domain *domain = &bc->domains[i];
-
- pm_genpd_remove(&domain->genpd);
- }
}
static const struct imx93_blk_ctrl_domain_data imx93_media_blk_ctl_domain_data[] = {
@@ -457,7 +450,6 @@ MODULE_DEVICE_TABLE(of, imx93_blk_ctrl_o
static struct platform_driver imx93_blk_ctrl_driver = {
.probe = imx93_blk_ctrl_probe,
- .remove = imx93_blk_ctrl_remove,
.driver = {
.name = "imx93-blk-ctrl",
.of_match_table = imx93_blk_ctrl_of_match,
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 664/675] pmdomain: imx93-blk-ctrl: Extract PHY as shared domain for DSI/CSI
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (662 preceding siblings ...)
2026-07-30 14:16 ` [PATCH 6.18 663/675] pmdomain: imx93-blk-ctrl: convert to devm_* only Greg Kroah-Hartman
@ 2026-07-30 14:16 ` Greg Kroah-Hartman
2026-07-30 14:16 ` [PATCH 6.18 665/675] i3c: mipi-i3c-hci: Fix Hot-Join NACK Greg Kroah-Hartman
` (15 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:16 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Guoniu Zhou, Frank Li, Peng Fan,
Ulf Hansson, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Guoniu Zhou <guoniu.zhou@oss.nxp.com>
[ Upstream commit 99611233f8cda833169fa6487d5dacdf189e5cb0 ]
The MIPI DSI and CSI domains share control bits for clock and reset, which
can lead to incorrect behavior if one domain disables the shared resource
while the other is still active.
To fix the issue, introduce a shared MIPI PHY power domain to own the
common resources and make DSI and CSI its subdomains. This ensures the
shared bits are properly managed and not disabled while still in use.
Fixes: e9aa77d413c9 ("soc: imx: add i.MX93 media blk ctrl driver")
Cc: stable@vger.kernel.org
Signed-off-by: Guoniu Zhou <guoniu.zhou@oss.nxp.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Ulf Hansson <ulfh@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/pmdomain/imx/imx93-blk-ctrl.c | 60 ++++++++++++++++++++++++++++++++--
1 file changed, 58 insertions(+), 2 deletions(-)
--- a/drivers/pmdomain/imx/imx93-blk-ctrl.c
+++ b/drivers/pmdomain/imx/imx93-blk-ctrl.c
@@ -47,6 +47,8 @@
#define PRIO(X) (X)
+#define BLK_CTRL_NO_PARENT UINT_MAX
+
struct imx93_blk_ctrl_domain;
struct imx93_blk_ctrl {
@@ -67,12 +69,18 @@ struct imx93_blk_ctrl_qos {
u32 cfg_prio;
};
+struct imx93_blk_ctrl_subdomain_link {
+ struct generic_pm_domain *parent;
+ struct generic_pm_domain *subdomain;
+};
+
struct imx93_blk_ctrl_domain_data {
const char *name;
const char * const *clk_names;
int num_clks;
u32 rst_mask;
u32 clk_mask;
+ u32 parent;
int num_qos;
struct imx93_blk_ctrl_qos qos[DOMAIN_MAX_QOS];
};
@@ -202,6 +210,13 @@ static void imx93_release_pm_genpd(void
pm_genpd_remove(genpd);
}
+static void imx93_release_subdomain(void *data)
+{
+ struct imx93_blk_ctrl_subdomain_link *link = data;
+
+ pm_genpd_remove_subdomain(link->parent, link->subdomain);
+}
+
static struct lock_class_key blk_ctrl_genpd_lock_class;
static int imx93_blk_ctrl_probe(struct platform_device *pdev)
@@ -303,6 +318,34 @@ static int imx93_blk_ctrl_probe(struct p
bc->onecell_data.domains[i] = &domain->genpd;
}
+ for (i = 0; i < bc_data->num_domains; i++) {
+ struct imx93_blk_ctrl_domain *domain = &bc->domains[i];
+ const struct imx93_blk_ctrl_domain_data *data = domain->data;
+ struct imx93_blk_ctrl_subdomain_link *link;
+
+ if (bc_data->skip_mask & BIT(i) ||
+ data->parent == BLK_CTRL_NO_PARENT)
+ continue;
+
+ link = devm_kzalloc(dev, sizeof(*link), GFP_KERNEL);
+ if (!link)
+ return -ENOMEM;
+
+ link->parent = &bc->domains[data->parent].genpd;
+ link->subdomain = &domain->genpd;
+
+ ret = pm_genpd_add_subdomain(&bc->domains[data->parent].genpd,
+ &domain->genpd);
+ if (ret)
+ return dev_err_probe(dev, ret, "failed to add subdomain %s\n",
+ domain->genpd.name);
+
+ ret = devm_add_action_or_reset(dev, imx93_release_subdomain, link);
+ if (ret)
+ return dev_err_probe(dev, ret,
+ "failed to add subdomain release callback\n");
+ }
+
ret = devm_pm_runtime_enable(dev);
if (ret)
return dev_err_probe(dev, ret, "failed to enable pm-runtime\n");
@@ -323,8 +366,9 @@ static const struct imx93_blk_ctrl_domai
.name = "mediablk-mipi-dsi",
.clk_names = (const char *[]){ "dsi" },
.num_clks = 1,
- .rst_mask = BIT(11) | BIT(12),
- .clk_mask = BIT(11) | BIT(12),
+ .rst_mask = BIT(11),
+ .clk_mask = BIT(11),
+ .parent = IMX93_MEDIABLK_PD_MIPI_PHY,
},
[IMX93_MEDIABLK_PD_MIPI_CSI] = {
.name = "mediablk-mipi-csi",
@@ -332,6 +376,7 @@ static const struct imx93_blk_ctrl_domai
.num_clks = 2,
.rst_mask = BIT(9) | BIT(10),
.clk_mask = BIT(9) | BIT(10),
+ .parent = IMX93_MEDIABLK_PD_MIPI_PHY,
},
[IMX93_MEDIABLK_PD_PXP] = {
.name = "mediablk-pxp",
@@ -339,6 +384,7 @@ static const struct imx93_blk_ctrl_domai
.num_clks = 1,
.rst_mask = BIT(7) | BIT(8),
.clk_mask = BIT(7) | BIT(8),
+ .parent = BLK_CTRL_NO_PARENT,
.num_qos = 2,
.qos = {
{
@@ -360,6 +406,7 @@ static const struct imx93_blk_ctrl_domai
.num_clks = 2,
.rst_mask = BIT(4) | BIT(5) | BIT(6),
.clk_mask = BIT(4) | BIT(5) | BIT(6),
+ .parent = BLK_CTRL_NO_PARENT,
.num_qos = 1,
.qos = {
{
@@ -376,6 +423,7 @@ static const struct imx93_blk_ctrl_domai
.num_clks = 1,
.rst_mask = BIT(2) | BIT(3),
.clk_mask = BIT(2) | BIT(3),
+ .parent = BLK_CTRL_NO_PARENT,
.num_qos = 4,
.qos = {
{
@@ -401,6 +449,14 @@ static const struct imx93_blk_ctrl_domai
}
}
},
+ [IMX93_MEDIABLK_PD_MIPI_PHY] = {
+ .name = "mediablk-mipi-phy",
+ .clk_names = NULL,
+ .num_clks = 0,
+ .rst_mask = BIT(12),
+ .clk_mask = BIT(12),
+ .parent = BLK_CTRL_NO_PARENT,
+ },
};
static const struct regmap_range imx93_media_blk_ctl_yes_ranges[] = {
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 665/675] i3c: mipi-i3c-hci: Fix Hot-Join NACK
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (663 preceding siblings ...)
2026-07-30 14:16 ` [PATCH 6.18 664/675] pmdomain: imx93-blk-ctrl: Extract PHY as shared domain for DSI/CSI Greg Kroah-Hartman
@ 2026-07-30 14:16 ` Greg Kroah-Hartman
2026-07-30 14:16 ` [PATCH 6.18 666/675] i3c: mipi-i3c-hci: Fix handling of shared IRQs during early initialization Greg Kroah-Hartman
` (14 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:16 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Adrian Hunter, Frank Li,
Alexandre Belloni, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Adrian Hunter <adrian.hunter@intel.com>
[ Upstream commit fa9586bd77ada1e3861c7bef65f6bb9dcf8d9481 ]
The MIPI I3C HCI host controller driver does not implement Hot-Join
handling, yet Hot-Join response control defaults to allowing devices to
Hot-Join the bus. Configure HC_CONTROL_HOT_JOIN_CTRL to NACK all Hot-Join
attempts.
Fixes: 9ad9a52cce282 ("i3c/master: introduce the mipi-i3c-hci driver")
Cc: stable@vger.kernel.org
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Link: https://patch.msgid.link/20260306072451.11131-3-adrian.hunter@intel.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Stable-dep-of: c6396b835a5e ("i3c: mipi-i3c-hci: Fix handling of shared IRQs during early initialization")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/i3c/master/mipi-i3c-hci/core.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/i3c/master/mipi-i3c-hci/core.c
+++ b/drivers/i3c/master/mipi-i3c-hci/core.c
@@ -147,7 +147,8 @@ static int i3c_hci_bus_init(struct i3c_m
if (hci->quirks & HCI_QUIRK_RESP_BUF_THLD)
amd_set_resp_buf_thld(hci);
- reg_set(HC_CONTROL, HC_CONTROL_BUS_ENABLE);
+ /* Enable bus with Hot-Join disabled */
+ reg_set(HC_CONTROL, HC_CONTROL_BUS_ENABLE | HC_CONTROL_HOT_JOIN_CTRL);
dev_dbg(&hci->master.dev, "HC_CONTROL = %#x", reg_read(HC_CONTROL));
return 0;
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 666/675] i3c: mipi-i3c-hci: Fix handling of shared IRQs during early initialization
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (664 preceding siblings ...)
2026-07-30 14:16 ` [PATCH 6.18 665/675] i3c: mipi-i3c-hci: Fix Hot-Join NACK Greg Kroah-Hartman
@ 2026-07-30 14:16 ` Greg Kroah-Hartman
2026-07-30 14:16 ` [PATCH 6.18 667/675] mm/damon/core: validate ranges in damon_set_regions() Greg Kroah-Hartman
` (13 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:16 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Adrian Hunter, Frank Li,
Alexandre Belloni, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Adrian Hunter <adrian.hunter@intel.com>
[ Upstream commit c6396b835a5e599c4df656112140f065bb544a24 ]
Shared interrupts may fire unexpectedly, including during periods when the
controller is not yet fully initialized. Commit b9a15012a1452
("i3c: mipi-i3c-hci: Add optional Runtime PM support") addressed this issue
for the runtime-suspended state, but the same problem can also occur before
the bus is enabled for the first time.
Ensure the IRQ handler ignores interrupts until initialization is complete
by making consistent use of the existing irq_inactive flag. The flag is
now set to false immediately before enabling the bus.
To guarantee correct ordering with respect to the IRQ handler, protect
all transitions of irq_inactive with the same spinlock used inside the
handler.
Fixes: b8460480f62e1 ("i3c: mipi-i3c-hci: Allow for Multi-Bus Instances")
Cc: stable@vger.kernel.org
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Link: https://patch.msgid.link/20260306072451.11131-14-adrian.hunter@intel.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/i3c/master/mipi-i3c-hci/core.c | 13 +++++++++++++
drivers/i3c/master/mipi-i3c-hci/hci.h | 1 +
2 files changed, 14 insertions(+)
--- a/drivers/i3c/master/mipi-i3c-hci/core.c
+++ b/drivers/i3c/master/mipi-i3c-hci/core.c
@@ -147,6 +147,8 @@ static int i3c_hci_bus_init(struct i3c_m
if (hci->quirks & HCI_QUIRK_RESP_BUF_THLD)
amd_set_resp_buf_thld(hci);
+ WRITE_ONCE(hci->irq_inactive, false);
+
/* Enable bus with Hot-Join disabled */
reg_set(HC_CONTROL, HC_CONTROL_BUS_ENABLE | HC_CONTROL_HOT_JOIN_CTRL);
dev_dbg(&hci->master.dev, "HC_CONTROL = %#x", reg_read(HC_CONTROL));
@@ -537,6 +539,15 @@ static irqreturn_t i3c_hci_irq_handler(i
irqreturn_t result = IRQ_NONE;
u32 val;
+ /*
+ * The IRQ can be shared, so the handler may be called when the IRQ is
+ * due to a different device. That could happen before the controller
+ * has been initialized, so exit immediately if IRQs are not expected
+ * for this device.
+ */
+ if (READ_ONCE(hci->irq_inactive))
+ return IRQ_NONE;
+
val = reg_read(INTR_STATUS);
reg_write(INTR_STATUS, val);
dev_dbg(&hci->master.dev, "INTR_STATUS %#x", val);
@@ -776,6 +787,8 @@ static int i3c_hci_probe(struct platform
if (ret)
return ret;
+ WRITE_ONCE(hci->irq_inactive, true);
+
irq = platform_get_irq(pdev, 0);
ret = devm_request_irq(&pdev->dev, irq, i3c_hci_irq_handler,
IRQF_SHARED, NULL, hci);
--- a/drivers/i3c/master/mipi-i3c-hci/hci.h
+++ b/drivers/i3c/master/mipi-i3c-hci/hci.h
@@ -46,6 +46,7 @@ struct i3c_hci {
void *io_data;
const struct hci_cmd_ops *cmd;
spinlock_t lock;
+ bool irq_inactive;
struct mutex control_mutex;
atomic_t next_cmd_tid;
u32 caps;
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 667/675] mm/damon/core: validate ranges in damon_set_regions()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (665 preceding siblings ...)
2026-07-30 14:16 ` [PATCH 6.18 666/675] i3c: mipi-i3c-hci: Fix handling of shared IRQs during early initialization Greg Kroah-Hartman
@ 2026-07-30 14:16 ` Greg Kroah-Hartman
2026-07-30 14:16 ` [PATCH 6.18 668/675] mm/damon/core: disallow overlapping input ranges for damon_set_regions() Greg Kroah-Hartman
` (12 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:16 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, SJ Park, Yang yingliang,
Andrew Morton
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: SJ Park <sj@kernel.org>
commit 1292c0ecb1caefb8ca064a3639d5673991e8810c upstream.
DAMON core logic assumes zero length regions don't exist. However, a few
DAMON API callers including DAMON_SYSFS, DAMON_RECLAIM and DAMON_LRU_SORT
allow users to set empty monitoring target regions. This could result in
WARN_ONCE() on CONFIG_DAMON_DEBUG_SANITY enabled kernel, and
divide-by-zero from damon_merge_two_regions().
For example, the WANR_ONCE() can be triggered like below.
# grep DAMON_DEBUG_SANITY /boot/config-$(uname -r)
# CONFIG_DAMON_DEBUG_SANITY=y
# damo start
# cd /sys/kernel/mm/damon/admin/kdamonds/0
# echo 0 > contexts/0/targets/0/regions/0/start
# echo 0 > contexts/0/targets/0/regions/0/end
# echo commit > state
# dmesg
[....]
[ 73.705780] ------------[ cut here ]------------
[ 73.707552] start 0 >= end 0
[ 73.708452] WARNING: mm/damon/core.c:359 at damon_new_region+0x6e/0x80, CPU#1: kdamond.0/758
[...]
All DAMON API callers eventually use damon_set_regions() to setup the
regions. Add the validation logic in the function.
Link: https://lore.kernel.org/20260630035221.146458-1-sj@kernel.org
Fixes: 43b0536cb471 ("mm/damon: introduce DAMON-based Reclamation (DAMON_RECLAIM)")
Signed-off-by: SJ Park <sj@kernel.org>
Cc: Yang yingliang <yangyingliang@huawei.com>
Cc: <stable@vger.kernel.org> # 5.16.x
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: SJ Park <sj@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
mm/damon/core.c | 6 ++++++
1 file changed, 6 insertions(+)
--- a/mm/damon/core.c
+++ b/mm/damon/core.c
@@ -215,6 +215,12 @@ int damon_set_regions(struct damon_targe
unsigned int i;
int err;
+ for (i = 0; i < nr_ranges; i++) {
+ if (ALIGN_DOWN(ranges[i].start, min_sz_region) >=
+ ALIGN(ranges[i].end, min_sz_region))
+ return -EINVAL;
+ }
+
/* Remove regions which are not in the new ranges */
damon_for_each_region_safe(r, next, t) {
for (i = 0; i < nr_ranges; i++) {
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 668/675] mm/damon/core: disallow overlapping input ranges for damon_set_regions()
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (666 preceding siblings ...)
2026-07-30 14:16 ` [PATCH 6.18 667/675] mm/damon/core: validate ranges in damon_set_regions() Greg Kroah-Hartman
@ 2026-07-30 14:16 ` Greg Kroah-Hartman
2026-07-30 14:16 ` [PATCH 6.18 669/675] rust: allow `suspicious_runtime_symbol_definitions` lint for Rust >= 1.98 Greg Kroah-Hartman
` (11 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:16 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, SJ Park, Andrew Morton
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: SJ Park <sj@kernel.org>
commit 954157679ec34661c2e87e7eb796104a797c32db upstream.
damon_set_regions() assumes the input ranges are sorted by the address and
don't overlap each other. Hence the assumption was initially to be
explicitly validated. But commit 97d482f4592f ("mm/damon/sysfs: reuse
damon_set_regions() for regions setting") has mistakenly removed the
validation.
This can make DAMON behave in unexpected ways. At the best, the
monitoring results snapshot will just look weird since there will be
overlapping regions. DAMOS will also work weirdly, applying the same
action multiple times for overlapping regions, and make DAMOS quota weird.
More seriously, depending on the setup and regions updates sequence,
negative size regions can be made. It will trigger WARN_ONCE() if the
kernel is built with CONFIG_DAMON_DEBUG_SANITY=y. Depending on the
monitoring results, the negative size region can further trigger division
by zero in damon_merge_two_regions().
Note that some of the consequences including the WARN_ONCE() and the
divide by zero depend on commits that were introduced after the root cause
commit 97d482f4592f ("mm/damon/sysfs: reuse damon_set_regions() for
regions setting").
Fix the problems by checking the assumption and returning an error if
the input ranges don't meet the assumption.
The issue was discovered [1] by Sashiko.
Link: https://lore.kernel.org/20260703165610.92894-1-sj@kernel.org
Link: https://lore.kernel.org/20260630041806.151124-1-sj@kernel.org [1]
Fixes: 97d482f4592f ("mm/damon/sysfs: reuse damon_set_regions() for regions setting")
Signed-off-by: SJ Park <sj@kernel.org>
Cc: <stable@vger.kernel.org> # 5.19.x
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: SJ Park <sj@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
mm/damon/core.c | 11 +++++++++--
1 file changed, 9 insertions(+), 2 deletions(-)
--- a/mm/damon/core.c
+++ b/mm/damon/core.c
@@ -213,12 +213,19 @@ int damon_set_regions(struct damon_targe
{
struct damon_region *r, *next;
unsigned int i;
+ unsigned long last_end;
int err;
for (i = 0; i < nr_ranges; i++) {
- if (ALIGN_DOWN(ranges[i].start, min_sz_region) >=
- ALIGN(ranges[i].end, min_sz_region))
+ unsigned long start, end;
+
+ start = ALIGN_DOWN(ranges[i].start, min_sz_region);
+ end = ALIGN(ranges[i].end, min_sz_region);
+ if (start >= end)
+ return -EINVAL;
+ if (i > 0 && last_end > start)
return -EINVAL;
+ last_end = end;
}
/* Remove regions which are not in the new ranges */
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 669/675] rust: allow `suspicious_runtime_symbol_definitions` lint for Rust >= 1.98
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (667 preceding siblings ...)
2026-07-30 14:16 ` [PATCH 6.18 668/675] mm/damon/core: disallow overlapping input ranges for damon_set_regions() Greg Kroah-Hartman
@ 2026-07-30 14:16 ` Greg Kroah-Hartman
2026-07-30 14:16 ` [PATCH 6.18 670/675] rust: device: avoid trailing ; in printing macros Greg Kroah-Hartman
` (10 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:16 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Urgau, Gary Guo, Alice Ryhl,
Tamir Duberstein, Miguel Ojeda
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Miguel Ojeda <ojeda@kernel.org>
commit 608045a91d9176d66b2114d0006bc8b57dff2ca9 upstream.
Starting with Rust 1.98.0 (expected 2026-08-20), Rust is introducing a
couple new lints, `invalid_runtime_symbol_definitions` (deny-by-default)
and `suspicious_runtime_symbol_definitions` (warn-by-default), which check
the signature of items whose symbol name is a runtime symbol expected by
`core`.
Our build hits the second one, i.e. the warning:
error: suspicious definition of the runtime `strlen` symbol used by the standard library
--> rust/bindings/bindings_generated.rs:20018:5
|
20018 | pub fn strlen(s: *const ffi::c_char) -> usize;
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= note: expected `unsafe extern "C" fn(*const i8) -> usize`
found `unsafe extern "C" fn(*const u8) -> usize`
= help: either fix the signature or remove any attributes like `#[unsafe(no_mangle)]`, `#[unsafe(export_name = "strlen")]`, or `#[link_name = "strlen"]`
= help: allow this lint if the signature is compatible
= note: `-D suspicious-runtime-symbol-definitions` implied by `-D warnings`
= help: to override `-D warnings` add `#[allow(suspicious_runtime_symbol_definitions)]`
error: suspicious definition of the runtime `strlen` symbol used by the standard library
--> rust/uapi/uapi_generated.rs:14236:5
|
14236 | pub fn strlen(s: *const ffi::c_char) -> usize;
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= note: expected `unsafe extern "C" fn(*const i8) -> usize`
found `unsafe extern "C" fn(*const u8) -> usize`
= help: either fix the signature or remove any attributes like `#[unsafe(no_mangle)]`, `#[unsafe(export_name = "strlen")]`, or `#[link_name = "strlen"]`
= help: allow this lint if the signature is compatible
= note: `-D suspicious-runtime-symbol-definitions` implied by `-D warnings`
= help: to override `-D warnings` add `#[allow(suspicious_runtime_symbol_definitions)]`
Thus `allow` the lint in `bindings` and `uapi`.
A more targeted alternative to avoid `allow`ing it would be to pass
`--blocklist-function strlen` to `bindgen`, but we would perhaps need
to adjust if other C headers end up adding more (or Rust checking more).
Since it is just the less critical one that we hit, and since eventually
this should be properly fixed by getting upstream Rust to provide a flag
like GCC/Clang's `-funsigned-char` [2][3], just `allow` it for now.
Cc: Urgau <urgau@numericable.fr>
Cc: stable@vger.kernel.org # Needed in 6.12.y and later (Rust is pinned in older LTSs).
Link: https://github.com/rust-lang/rust/pull/155521 [1]
Link: https://github.com/rust-lang/rust/issues/138446 [2]
Link: https://github.com/Rust-for-Linux/linux/issues/355 [3]
Reviewed-by: Gary Guo <gary@garyguo.net>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Reviewed-by: Tamir Duberstein <tamird@kernel.org>
Link: https://patch.msgid.link/20260615143225.471756-1-ojeda@kernel.org
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
init/Kconfig | 3 +++
rust/bindings/lib.rs | 4 ++++
rust/uapi/lib.rs | 4 ++++
3 files changed, 11 insertions(+)
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -162,6 +162,9 @@ config RUSTC_HAS_FILE_WITH_NUL
config RUSTC_HAS_FILE_AS_C_STR
def_bool RUSTC_VERSION >= 109100
+config RUSTC_HAS_SUSPICIOUS_RUNTIME_SYMBOL_DEFINITIONS
+ def_bool RUSTC_VERSION >= 109800
+
config PAHOLE_VERSION
int
default $(shell,$(srctree)/scripts/pahole-version.sh $(PAHOLE))
--- a/rust/bindings/lib.rs
+++ b/rust/bindings/lib.rs
@@ -30,6 +30,10 @@
#[allow(clippy::ref_as_ptr)]
#[allow(clippy::undocumented_unsafe_blocks)]
#[cfg_attr(CONFIG_RUSTC_HAS_UNNECESSARY_TRANSMUTES, allow(unnecessary_transmutes))]
+#[cfg_attr(
+ CONFIG_RUSTC_HAS_SUSPICIOUS_RUNTIME_SYMBOL_DEFINITIONS,
+ allow(suspicious_runtime_symbol_definitions)
+)]
mod bindings_raw {
use pin_init::{MaybeZeroable, Zeroable};
--- a/rust/uapi/lib.rs
+++ b/rust/uapi/lib.rs
@@ -28,6 +28,10 @@
unsafe_op_in_unsafe_fn
)]
#![cfg_attr(CONFIG_RUSTC_HAS_UNNECESSARY_TRANSMUTES, allow(unnecessary_transmutes))]
+#![cfg_attr(
+ CONFIG_RUSTC_HAS_SUSPICIOUS_RUNTIME_SYMBOL_DEFINITIONS,
+ allow(suspicious_runtime_symbol_definitions)
+)]
// Manual definition of blocklisted types.
type __kernel_size_t = usize;
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 670/675] rust: device: avoid trailing ; in printing macros
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (668 preceding siblings ...)
2026-07-30 14:16 ` [PATCH 6.18 669/675] rust: allow `suspicious_runtime_symbol_definitions` lint for Rust >= 1.98 Greg Kroah-Hartman
@ 2026-07-30 14:16 ` Greg Kroah-Hartman
2026-07-30 14:16 ` [PATCH 6.18 671/675] usb: gadget: f_tcm: synchronize delayed set_alt with teardown Greg Kroah-Hartman
` (9 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:16 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Alice Ryhl, Gary Guo,
Danilo Krummrich, Miguel Ojeda
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Alice Ryhl <aliceryhl@google.com>
commit a19bda861b3a79e25417462539df8b0d77c6b322 upstream.
These macros are used like expressions, so they should not emit a
semicolon. This is being turned into a hard error in a future release of
Rust.
error: trailing semicolon in macro used in expression position
--> drivers/gpu/nova-core/firmware/fsp.rs:79:34
|
79 | .inspect_err(|_| dev_err!(dev, "FMC firmware missing '{}' section\n", name))
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
= note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813>
= note: this error originates in the macro `dev_err` (in Nightly builds, run with -Z macro-backtrace for more info)
[ I was doubly surprised since upstream made it a deny-by-default lint
a year ago for Rust 1.91.0, and yet we didn't see it; plus I hadn't
seen this in my CI even yesterday.
It turns out this just landed into today's nightly (nightly-2026-07-16,
using upstream commit d0babd8b6):
Link: https://github.com/rust-lang/rust/pull/159222
which says:
"The `semicolon_in_expressions_from_macros` lint previously
suppressed warnings about non-local macros. This masks
a lint that will subsequently become a hard error."
So that explains it. And this is the PR that will make it a hard error
at some point in the future:
Link: https://github.com/rust-lang/rust/pull/159218
Thus starting with Rust 1.99.0 (expected 2026-10-01), we will be
seeing the deny-by-default lint above, so clean it up already.
- Miguel ]
Cc: stable@vger.kernel.org # Needed in 6.18.y and later.
Link: https://github.com/rust-lang/rust/issues/79813
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Acked-by: Danilo Krummrich <dakr@kernel.org>
Link: https://github.com/rust-lang/rust/pull/159218
Link: https://github.com/rust-lang/rust/pull/159222
Link: https://patch.msgid.link/20260716-device-trail-semicolon-v1-1-f48e9dcfae15@google.com
[ Fixed typo. ]
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
[ Resolved conflict on `dev_printk` by not performing a similar cleanup
since it is not strictly needed. - Miguel ]
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
rust/kernel/device.rs | 16 ++++++++--------
1 file changed, 8 insertions(+), 8 deletions(-)
--- a/rust/kernel/device.rs
+++ b/rust/kernel/device.rs
@@ -625,7 +625,7 @@ macro_rules! dev_printk {
/// ```
#[macro_export]
macro_rules! dev_emerg {
- ($($f:tt)*) => { $crate::dev_printk!(pr_emerg, $($f)*); }
+ ($($f:tt)*) => { $crate::dev_printk!(pr_emerg, $($f)*) }
}
/// Prints an alert-level message (level 1) prefixed with device information.
@@ -651,7 +651,7 @@ macro_rules! dev_emerg {
/// ```
#[macro_export]
macro_rules! dev_alert {
- ($($f:tt)*) => { $crate::dev_printk!(pr_alert, $($f)*); }
+ ($($f:tt)*) => { $crate::dev_printk!(pr_alert, $($f)*) }
}
/// Prints a critical-level message (level 2) prefixed with device information.
@@ -677,7 +677,7 @@ macro_rules! dev_alert {
/// ```
#[macro_export]
macro_rules! dev_crit {
- ($($f:tt)*) => { $crate::dev_printk!(pr_crit, $($f)*); }
+ ($($f:tt)*) => { $crate::dev_printk!(pr_crit, $($f)*) }
}
/// Prints an error-level message (level 3) prefixed with device information.
@@ -703,7 +703,7 @@ macro_rules! dev_crit {
/// ```
#[macro_export]
macro_rules! dev_err {
- ($($f:tt)*) => { $crate::dev_printk!(pr_err, $($f)*); }
+ ($($f:tt)*) => { $crate::dev_printk!(pr_err, $($f)*) }
}
/// Prints a warning-level message (level 4) prefixed with device information.
@@ -729,7 +729,7 @@ macro_rules! dev_err {
/// ```
#[macro_export]
macro_rules! dev_warn {
- ($($f:tt)*) => { $crate::dev_printk!(pr_warn, $($f)*); }
+ ($($f:tt)*) => { $crate::dev_printk!(pr_warn, $($f)*) }
}
/// Prints a notice-level message (level 5) prefixed with device information.
@@ -755,7 +755,7 @@ macro_rules! dev_warn {
/// ```
#[macro_export]
macro_rules! dev_notice {
- ($($f:tt)*) => { $crate::dev_printk!(pr_notice, $($f)*); }
+ ($($f:tt)*) => { $crate::dev_printk!(pr_notice, $($f)*) }
}
/// Prints an info-level message (level 6) prefixed with device information.
@@ -781,7 +781,7 @@ macro_rules! dev_notice {
/// ```
#[macro_export]
macro_rules! dev_info {
- ($($f:tt)*) => { $crate::dev_printk!(pr_info, $($f)*); }
+ ($($f:tt)*) => { $crate::dev_printk!(pr_info, $($f)*) }
}
/// Prints a debug-level message (level 7) prefixed with device information.
@@ -807,5 +807,5 @@ macro_rules! dev_info {
/// ```
#[macro_export]
macro_rules! dev_dbg {
- ($($f:tt)*) => { $crate::dev_printk!(pr_dbg, $($f)*); }
+ ($($f:tt)*) => { $crate::dev_printk!(pr_dbg, $($f)*) }
}
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 671/675] usb: gadget: f_tcm: synchronize delayed set_alt with teardown
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (669 preceding siblings ...)
2026-07-30 14:16 ` [PATCH 6.18 670/675] rust: device: avoid trailing ; in printing macros Greg Kroah-Hartman
@ 2026-07-30 14:16 ` Greg Kroah-Hartman
2026-07-30 14:16 ` [PATCH 6.18 672/675] net/mlx5e: Fix NULL pointer dereference in ioctl module EEPROM query Greg Kroah-Hartman
` (8 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:16 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, stable, Cen Zhang, Sasha Levin
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Cen Zhang <zzzccc427@gmail.com>
commit 79e2d75725c85607f8a9d87ae9cace62a19f767d upstream.
The f_tcm set_alt() path defers endpoint setup to a work item and
completes the delayed status response from process context. The delayed
work uses f_tcm private state and may complete the setup request after
disconnect or function teardown has already moved on.
Cancel and drain the delayed set_alt work when the function is unbound or
freed. For disable paths, which are reached under the composite device
lock, use a small state machine and a non-sleeping cancellation path
instead of cancel_work_sync(). If the work is already running, mark it
cancelled and let the worker own the cleanup; otherwise tcm_disable() can
cancel the queued work and clean up immediately.
Also serialize the final delayed-status completion with the cancellation
check while holding the composite device lock. This prevents a disconnect
from clearing delayed_status while the worker is about to complete the
control request.
Validation reproduced this kernel report:
BUG: KASAN: slab-use-after-free in tcm_delayed_set_alt+0x6c/0xef0
Call Trace:
<TASK>
dump_stack_lvl+0x66/0xa0
print_report+0xce/0x630
? tcm_delayed_set_alt+0x6c/0xef0
? srso_alias_return_thunk+0x5/0xfbef5
? __virt_addr_valid+0x188/0x320
? tcm_delayed_set_alt+0x6c/0xef0
kasan_report+0xe0/0x110
? tcm_delayed_set_alt+0x6c/0xef0
tcm_delayed_set_alt+0x6c/0xef0
? __pfx_tcm_delayed_set_alt+0x10/0x10
? process_one_work+0x4cb/0xb90
? rcu_is_watching+0x20/0x50
? tcm_delayed_set_alt+0x9/0xef0
process_one_work+0x4d7/0xb90
? __pfx_process_one_work+0x10/0x10
? srso_alias_return_thunk+0x5/0xfbef5
? __list_add_valid_or_report+0x37/0xf0
? __pfx_tcm_delayed_set_alt+0x10/0x10
? srso_alias_return_thunk+0x5/0xfbef5
worker_thread+0x2d8/0x570
? __pfx_worker_thread+0x10/0x10
kthread+0x1ad/0x1f0
? __pfx_kthread+0x10/0x10
ret_from_fork+0x3c9/0x540
? __pfx_ret_from_fork+0x10/0x10
? srso_alias_return_thunk+0x5/0xfbef5
? __switch_to+0x2e9/0x730
? __pfx_kthread+0x10/0x10
ret_from_fork_asm+0x1a/0x30
</TASK>
Allocated by task 544:
kasan_save_stack+0x33/0x60
kasan_save_track+0x14/0x30
__kasan_kmalloc+0x8f/0xa0
tcm_alloc+0x68/0x180
usb_get_function+0x36/0x60
config_usb_cfg_link+0x125/0x1b0
configfs_symlink+0x322/0x890
vfs_symlink+0xc2/0x270
filename_symlinkat+0x295/0x2f0
__x64_sys_symlinkat+0x62/0x90
do_syscall_64+0x115/0x6a0
entry_SYSCALL_64_after_hwframe+0x77/0x7f
Freed by task 661:
kasan_save_stack+0x33/0x60
kasan_save_track+0x14/0x30
kasan_save_free_info+0x3b/0x60
__kasan_slab_free+0x43/0x70
kfree+0x2f9/0x530
config_usb_cfg_unlink+0x173/0x1e0
configfs_unlink+0x1fa/0x340
vfs_unlink+0x15c/0x510
filename_unlinkat+0x2ba/0x450
__x64_sys_unlinkat+0x63/0x90
do_syscall_64+0x115/0x6a0
entry_SYSCALL_64_after_hwframe+0x77/0x7f
Fixes: c52661d60f63 ("usb-gadget: Initial merge of target module for UASP + BOT")
Cc: stable <stable@kernel.org>
Assisted-by: Codex:gpt-5.5
Signed-off-by: Cen Zhang <zzzccc427@gmail.com>
Link: https://patch.msgid.link/20260627104153.3822495-1-zzzccc427@gmail.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/gadget/function/f_tcm.c | 192 ++++++++++++++++++++++++++++++------
drivers/usb/gadget/function/tcm.h | 13 ++
2 files changed, 177 insertions(+), 28 deletions(-)
--- a/drivers/usb/gadget/function/f_tcm.c
+++ b/drivers/usb/gadget/function/f_tcm.c
@@ -2361,31 +2361,158 @@ ep_fail:
return -ENOTSUPP;
}
-struct guas_setup_wq {
- struct work_struct work;
- struct f_uas *fu;
- unsigned int alt;
-};
+static void tcm_cleanup_old_alt(struct f_uas *fu)
+{
+ if (fu->flags & USBG_IS_UAS)
+ uasp_cleanup_old_alt(fu);
+ else if (fu->flags & USBG_IS_BOT)
+ bot_cleanup_old_alt(fu);
+ fu->flags = 0;
+}
+
+static void tcm_delayed_set_alt_done(struct f_uas *fu)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&fu->delayed_set_alt_lock, flags);
+ fu->delayed_set_alt_state = USBG_DELAYED_SET_ALT_IDLE;
+ fu->delayed_set_alt_cancel = false;
+ spin_unlock_irqrestore(&fu->delayed_set_alt_lock, flags);
+}
+
+static bool tcm_delayed_set_alt_cancelled(struct f_uas *fu)
+{
+ bool cancelled;
+ unsigned long flags;
+
+ spin_lock_irqsave(&fu->delayed_set_alt_lock, flags);
+ cancelled = fu->delayed_set_alt_cancel;
+ spin_unlock_irqrestore(&fu->delayed_set_alt_lock, flags);
+
+ return cancelled;
+}
+
+static bool tcm_complete_delayed_status(struct f_uas *fu)
+{
+ struct usb_composite_dev *cdev = fu->function.config->cdev;
+ struct usb_request *req = cdev->req;
+ unsigned long cdev_flags;
+ bool cancelled;
+ int ret;
+
+ spin_lock_irqsave(&cdev->lock, cdev_flags);
+ spin_lock(&fu->delayed_set_alt_lock);
+ cancelled = fu->delayed_set_alt_cancel;
+ if (!cancelled) {
+ fu->delayed_set_alt_state = USBG_DELAYED_SET_ALT_IDLE;
+ fu->delayed_set_alt_cancel = false;
+ }
+ spin_unlock(&fu->delayed_set_alt_lock);
+
+ if (cancelled) {
+ spin_unlock_irqrestore(&cdev->lock, cdev_flags);
+ return false;
+ }
+
+ if (cdev->delayed_status == 0) {
+ WARN(cdev, "%s: Unexpected call\n", __func__);
+ } else if (--cdev->delayed_status == 0) {
+ req->length = 0;
+ req->context = cdev;
+ ret = usb_ep_queue(cdev->gadget->ep0, req, GFP_ATOMIC);
+ if (ret == 0) {
+ cdev->setup_pending = true;
+ } else {
+ req->status = 0;
+ req->complete(cdev->gadget->ep0, req);
+ }
+ }
+
+ spin_unlock_irqrestore(&cdev->lock, cdev_flags);
+
+ return true;
+}
+
+static bool tcm_cancel_delayed_set_alt(struct f_uas *fu)
+{
+ bool cleanup = false;
+ bool cancel = false;
+ unsigned long flags;
+
+ spin_lock_irqsave(&fu->delayed_set_alt_lock, flags);
+ switch (fu->delayed_set_alt_state) {
+ case USBG_DELAYED_SET_ALT_IDLE:
+ cleanup = true;
+ break;
+ case USBG_DELAYED_SET_ALT_QUEUED:
+ case USBG_DELAYED_SET_ALT_RUNNING:
+ fu->delayed_set_alt_cancel = true;
+ cancel = true;
+ break;
+ }
+ spin_unlock_irqrestore(&fu->delayed_set_alt_lock, flags);
+
+ if (cancel && cancel_work(&fu->delayed_set_alt)) {
+ spin_lock_irqsave(&fu->delayed_set_alt_lock, flags);
+ if (fu->delayed_set_alt_state == USBG_DELAYED_SET_ALT_QUEUED) {
+ fu->delayed_set_alt_state = USBG_DELAYED_SET_ALT_IDLE;
+ fu->delayed_set_alt_cancel = false;
+ cleanup = true;
+ }
+ spin_unlock_irqrestore(&fu->delayed_set_alt_lock, flags);
+ }
+
+ return cleanup;
+}
+
+static void tcm_cancel_delayed_set_alt_sync(struct f_uas *fu)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&fu->delayed_set_alt_lock, flags);
+ if (fu->delayed_set_alt_state != USBG_DELAYED_SET_ALT_IDLE)
+ fu->delayed_set_alt_cancel = true;
+ spin_unlock_irqrestore(&fu->delayed_set_alt_lock, flags);
+
+ cancel_work_sync(&fu->delayed_set_alt);
+
+ spin_lock_irqsave(&fu->delayed_set_alt_lock, flags);
+ fu->delayed_set_alt_state = USBG_DELAYED_SET_ALT_IDLE;
+ fu->delayed_set_alt_cancel = false;
+ spin_unlock_irqrestore(&fu->delayed_set_alt_lock, flags);
+}
static void tcm_delayed_set_alt(struct work_struct *wq)
{
- struct guas_setup_wq *work = container_of(wq, struct guas_setup_wq,
- work);
- struct f_uas *fu = work->fu;
- int alt = work->alt;
+ struct f_uas *fu = container_of(wq, struct f_uas, delayed_set_alt);
+ unsigned long flags;
+ unsigned int alt;
+
+ spin_lock_irqsave(&fu->delayed_set_alt_lock, flags);
+ if (fu->delayed_set_alt_state != USBG_DELAYED_SET_ALT_QUEUED) {
+ spin_unlock_irqrestore(&fu->delayed_set_alt_lock, flags);
+ return;
+ }
+ fu->delayed_set_alt_state = USBG_DELAYED_SET_ALT_RUNNING;
+ alt = fu->delayed_alt;
+ spin_unlock_irqrestore(&fu->delayed_set_alt_lock, flags);
- kfree(work);
+ tcm_cleanup_old_alt(fu);
- if (fu->flags & USBG_IS_BOT)
- bot_cleanup_old_alt(fu);
- if (fu->flags & USBG_IS_UAS)
- uasp_cleanup_old_alt(fu);
+ if (tcm_delayed_set_alt_cancelled(fu))
+ goto out_done;
if (alt == USB_G_ALT_INT_BBB)
bot_set_alt(fu);
else if (alt == USB_G_ALT_INT_UAS)
uasp_set_alt(fu);
- usb_composite_setup_continue(fu->function.config->cdev);
+
+ if (tcm_complete_delayed_status(fu))
+ return;
+
+ tcm_cleanup_old_alt(fu);
+out_done:
+ tcm_delayed_set_alt_done(fu);
}
static int tcm_get_alt(struct usb_function *f, unsigned intf)
@@ -2411,15 +2538,20 @@ static int tcm_set_alt(struct usb_functi
return -EOPNOTSUPP;
if ((alt == USB_G_ALT_INT_BBB) || (alt == USB_G_ALT_INT_UAS)) {
- struct guas_setup_wq *work;
+ unsigned long flags;
+
+ spin_lock_irqsave(&fu->delayed_set_alt_lock, flags);
+ if (fu->delayed_set_alt_state != USBG_DELAYED_SET_ALT_IDLE) {
+ spin_unlock_irqrestore(&fu->delayed_set_alt_lock,
+ flags);
+ return -EBUSY;
+ }
+ fu->delayed_alt = alt;
+ fu->delayed_set_alt_cancel = false;
+ fu->delayed_set_alt_state = USBG_DELAYED_SET_ALT_QUEUED;
+ spin_unlock_irqrestore(&fu->delayed_set_alt_lock, flags);
- work = kmalloc(sizeof(*work), GFP_ATOMIC);
- if (!work)
- return -ENOMEM;
- INIT_WORK(&work->work, tcm_delayed_set_alt);
- work->fu = fu;
- work->alt = alt;
- schedule_work(&work->work);
+ schedule_work(&fu->delayed_set_alt);
return USB_GADGET_DELAYED_STATUS;
}
return -EOPNOTSUPP;
@@ -2429,11 +2561,8 @@ static void tcm_disable(struct usb_funct
{
struct f_uas *fu = to_f_uas(f);
- if (fu->flags & USBG_IS_UAS)
- uasp_cleanup_old_alt(fu);
- else if (fu->flags & USBG_IS_BOT)
- bot_cleanup_old_alt(fu);
- fu->flags = 0;
+ if (tcm_cancel_delayed_set_alt(fu))
+ tcm_cleanup_old_alt(fu);
}
static int tcm_setup(struct usb_function *f,
@@ -2581,11 +2710,16 @@ static void tcm_free(struct usb_function
{
struct f_uas *tcm = to_f_uas(f);
+ tcm_cancel_delayed_set_alt_sync(tcm);
kfree(tcm);
}
static void tcm_unbind(struct usb_configuration *c, struct usb_function *f)
{
+ struct f_uas *fu = to_f_uas(f);
+
+ tcm_cancel_delayed_set_alt_sync(fu);
+ tcm_cleanup_old_alt(fu);
usb_free_all_descriptors(f);
}
@@ -2618,6 +2752,8 @@ static struct usb_function *tcm_alloc(st
fu->function.disable = tcm_disable;
fu->function.free_func = tcm_free;
fu->tpg = tpg_instances[i].tpg;
+ INIT_WORK(&fu->delayed_set_alt, tcm_delayed_set_alt);
+ spin_lock_init(&fu->delayed_set_alt_lock);
hash_init(fu->stream_hash);
mutex_unlock(&tpg_instances_lock);
--- a/drivers/usb/gadget/function/tcm.h
+++ b/drivers/usb/gadget/function/tcm.h
@@ -3,6 +3,7 @@
#define __TARGET_USB_GADGET_H__
#include <linux/kref.h>
+#include <linux/spinlock.h>
/* #include <linux/usb/uas.h> */
#include <linux/hashtable.h>
#include <linux/usb/composite.h>
@@ -29,6 +30,12 @@ enum {
#define USB_G_DEFAULT_SESSION_TAGS USBG_NUM_CMDS
+enum {
+ USBG_DELAYED_SET_ALT_IDLE = 0,
+ USBG_DELAYED_SET_ALT_QUEUED,
+ USBG_DELAYED_SET_ALT_RUNNING,
+};
+
struct tcm_usbg_nexus {
struct se_session *tvn_se_sess;
};
@@ -132,6 +139,12 @@ struct f_uas {
#define USBG_BOT_CMD_PEND (1 << 4)
#define USBG_BOT_WEDGED (1 << 5)
+ struct work_struct delayed_set_alt;
+ spinlock_t delayed_set_alt_lock; /* protects delayed_set_alt_* */
+ unsigned int delayed_alt;
+ unsigned int delayed_set_alt_state;
+ bool delayed_set_alt_cancel;
+
struct usbg_cdb cmd[USBG_NUM_CMDS];
struct usb_ep *ep_in;
struct usb_ep *ep_out;
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 672/675] net/mlx5e: Fix NULL pointer dereference in ioctl module EEPROM query
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (670 preceding siblings ...)
2026-07-30 14:16 ` [PATCH 6.18 671/675] usb: gadget: f_tcm: synchronize delayed set_alt with teardown Greg Kroah-Hartman
@ 2026-07-30 14:16 ` Greg Kroah-Hartman
2026-07-30 14:16 ` [PATCH 6.18 673/675] net: stmmac: fix dwmac4 transmit performance regression Greg Kroah-Hartman
` (7 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:16 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Gal Pressman, Tariq Toukan,
Dragos Tatulea, Mark Bloch, Jakub Kicinski
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Gal Pressman <gal@nvidia.com>
commit 7d36a4a8bf62dc508bc6bb4b59727aec25064ca5 upstream.
The mlx5_query_mcia() function unconditionally dereferences the status
pointer to store the MCIA register status value.
However, mlx5e_get_module_id() passes NULL since it doesn't need the
status value.
Add a NULL check before dereferencing the status pointer to prevent a
NULL pointer dereference.
Fixes: 2e4c44b12f4d ("net/mlx5: Refactor EEPROM query error handling to return status separately")
Signed-off-by: Gal Pressman <gal@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Dragos Tatulea <dtatulea@nvidia.com>
Signed-off-by: Mark Bloch <mbloch@nvidia.com>
Link: https://patch.msgid.link/20251225132717.358820-4-mbloch@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/ethernet/mellanox/mlx5/core/port.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
--- a/drivers/net/ethernet/mellanox/mlx5/core/port.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/port.c
@@ -393,9 +393,11 @@ static int mlx5_query_mcia(struct mlx5_c
if (err)
return err;
- *status = MLX5_GET(mcia_reg, out, status);
- if (*status)
+ if (MLX5_GET(mcia_reg, out, status)) {
+ if (status)
+ *status = MLX5_GET(mcia_reg, out, status);
return -EIO;
+ }
ptr = MLX5_ADDR_OF(mcia_reg, out, dwords);
memcpy(data, ptr, size);
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 673/675] net: stmmac: fix dwmac4 transmit performance regression
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (671 preceding siblings ...)
2026-07-30 14:16 ` [PATCH 6.18 672/675] net/mlx5e: Fix NULL pointer dereference in ioctl module EEPROM query Greg Kroah-Hartman
@ 2026-07-30 14:16 ` Greg Kroah-Hartman
2026-07-30 14:16 ` [PATCH 6.18 674/675] gpu: Fix uninitialized buddy for built-in drivers Greg Kroah-Hartman
` (6 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:16 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Russell King (Oracle),
Maxime Chevallier, Jakub Kicinski
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
commit 5ccde4c81e843ab6b3a324c8e2aa96d9b1270a1a upstream.
dwmac4's transmit performance dropped by a factor of four due to an
incorrect assumption about which definitions are for what. This
highlights the need for sane register macros.
Commit 8409495bf6c9 ("net: stmmac: cores: remove many xxx_SHIFT
definitions") changed the way the txpbl value is merged into the
register:
value = readl(ioaddr + DMA_CHAN_TX_CONTROL(dwmac4_addrs, chan));
- value = value | (txpbl << DMA_BUS_MODE_PBL_SHIFT);
+ value = value | FIELD_PREP(DMA_BUS_MODE_PBL, txpbl);
With the following in the header file:
#define DMA_BUS_MODE_PBL BIT(16)
-#define DMA_BUS_MODE_PBL_SHIFT 16
The assumption here was that DMA_BUS_MODE_PBL was the mask for
DMA_BUS_MODE_PBL_SHIFT, but this turns out not to be the case.
The field is actually six bits wide, buts 21:16, and is called
TXPBL.
What's even more confusing is, there turns out to be a PBLX8
single bit in the DMA_CHAN_CONTROL register (0x1100 for channel 0),
and DMA_BUS_MODE_PBL seems to be used for that. However, this bit
et.al. was listed under a comment "/* DMA SYS Bus Mode bitmap */"
which is for register 0x1004.
Fix this up by adding an appropriately named field definition under
the DMA_CHAN_TX_CONTROL() register address definition.
Move the RPBL mask definition under DMA_CHAN_RX_CONTROL(), correctly
renaming it as well.
Also move the PBL bit definition under DMA_CHAN_CONTROL(), correctly
renaming it.
This removes confusion over the PBL fields.
Fixes: 8409495bf6c9 ("net: stmmac: cores: remove many xxx_SHIFT definitions")
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Bisected-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Link: https://lore.kernel.org/51859704-57fd-4913-b09d-9ac58a57f185@bootlin.com
Tested-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Reviewed-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Link: https://patch.msgid.link/E1vgY1k-00000003vOC-0Z1H@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.c | 8 ++++----
drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.h | 7 ++++---
2 files changed, 8 insertions(+), 7 deletions(-)
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.c
@@ -76,7 +76,7 @@ static void dwmac4_dma_init_rx_chan(stru
u32 rxpbl = dma_cfg->rxpbl ?: dma_cfg->pbl;
value = readl(ioaddr + DMA_CHAN_RX_CONTROL(dwmac4_addrs, chan));
- value = value | FIELD_PREP(DMA_BUS_MODE_RPBL_MASK, rxpbl);
+ value = value | FIELD_PREP(DMA_CHAN_RX_CTRL_RXPBL_MASK, rxpbl);
writel(value, ioaddr + DMA_CHAN_RX_CONTROL(dwmac4_addrs, chan));
if (IS_ENABLED(CONFIG_ARCH_DMA_ADDR_T_64BIT) && likely(dma_cfg->eame))
@@ -97,7 +97,7 @@ static void dwmac4_dma_init_tx_chan(stru
u32 txpbl = dma_cfg->txpbl ?: dma_cfg->pbl;
value = readl(ioaddr + DMA_CHAN_TX_CONTROL(dwmac4_addrs, chan));
- value = value | FIELD_PREP(DMA_BUS_MODE_PBL, txpbl);
+ value = value | FIELD_PREP(DMA_CHAN_TX_CTRL_TXPBL_MASK, txpbl);
/* Enable OSP to get best performance */
value |= DMA_CONTROL_OSP;
@@ -122,7 +122,7 @@ static void dwmac4_dma_init_channel(stru
/* common channel control register config */
value = readl(ioaddr + DMA_CHAN_CONTROL(dwmac4_addrs, chan));
if (dma_cfg->pblx8)
- value = value | DMA_BUS_MODE_PBL;
+ value = value | DMA_CHAN_CTRL_PBLX8;
writel(value, ioaddr + DMA_CHAN_CONTROL(dwmac4_addrs, chan));
/* Mask interrupts by writing to CSR7 */
@@ -140,7 +140,7 @@ static void dwmac410_dma_init_channel(st
/* common channel control register config */
value = readl(ioaddr + DMA_CHAN_CONTROL(dwmac4_addrs, chan));
if (dma_cfg->pblx8)
- value = value | DMA_BUS_MODE_PBL;
+ value = value | DMA_CHAN_CTRL_PBLX8;
writel(value, ioaddr + DMA_CHAN_CONTROL(dwmac4_addrs, chan));
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.h
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.h
@@ -32,8 +32,6 @@
/* DMA SYS Bus Mode bitmap */
#define DMA_BUS_MODE_SPH BIT(24)
-#define DMA_BUS_MODE_PBL BIT(16)
-#define DMA_BUS_MODE_RPBL_MASK GENMASK(21, 16)
#define DMA_BUS_MODE_MB BIT(14)
#define DMA_BUS_MODE_FB BIT(0)
@@ -126,18 +124,21 @@ static inline u32 dma_chanx_base_addr(co
#define DMA_CHAN_STATUS(addrs, x) (dma_chanx_base_addr(addrs, x) + 0x60)
/* DMA Control X */
+#define DMA_CHAN_CTRL_PBLX8 BIT(16)
#define DMA_CONTROL_SPH BIT(24)
#define DMA_CONTROL_MSS_MASK GENMASK(13, 0)
/* DMA Tx Channel X Control register defines */
#define DMA_CONTROL_EDSE BIT(28)
+#define DMA_CHAN_TX_CTRL_TXPBL_MASK GENMASK(21, 16)
#define DMA_CONTROL_TSE BIT(12)
#define DMA_CONTROL_OSP BIT(4)
#define DMA_CONTROL_ST BIT(0)
/* DMA Rx Channel X Control register defines */
-#define DMA_CONTROL_SR BIT(0)
+#define DMA_CHAN_RX_CTRL_RXPBL_MASK GENMASK(21, 16)
#define DMA_RBSZ_MASK GENMASK(14, 1)
+#define DMA_CONTROL_SR BIT(0)
/* Interrupt status per channel */
#define DMA_CHAN_STATUS_REB GENMASK(21, 19)
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 674/675] gpu: Fix uninitialized buddy for built-in drivers
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (672 preceding siblings ...)
2026-07-30 14:16 ` [PATCH 6.18 673/675] net: stmmac: fix dwmac4 transmit performance regression Greg Kroah-Hartman
@ 2026-07-30 14:16 ` Greg Kroah-Hartman
2026-07-30 14:16 ` [PATCH 6.18 675/675] KVM: SVM: Bump asid_generation on CPU online to avoid ASID collision after hotplug Greg Kroah-Hartman
` (5 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:16 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Joel Fernandes, Dave Airlie,
intel-xe, Peter Senna Tschudin, Koen Koning
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Koen Koning <koen.koning@linux.intel.com>
commit cc27314c67516c138ee3829197d1c3b998e29fae upstream.
Move buddy to the start of the link order, so its __init runs before any
other built-in drivers that may depend on it. Otherwise, a built-in
driver that tries to use the buddy allocator will run into a kernel NULL
pointer dereference because slab_blocks is uninitialized.
Specifically, this fixes drm/xe (as built-in) running into a kernel
panic during boot, because it uses buddy during device probe.
Fixes: ba110db8e1bc ("gpu: Move DRM buddy allocator one level up (part two)")
Cc: Joel Fernandes <joelagnelf@nvidia.com>
Cc: Dave Airlie <airlied@redhat.com>
Cc: intel-xe@lists.freedesktop.org
Reviewed-by: Dave Airlie <airlied@redhat.com>
Tested-by: Peter Senna Tschudin <peter.senna@linux.intel.com>
Signed-off-by: Koen Koning <koen.koning@linux.intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patch.msgid.link/20260213152047.179628-1-koen.koning@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/Makefile | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/gpu/Makefile
+++ b/drivers/gpu/Makefile
@@ -2,8 +2,9 @@
# drm/tegra depends on host1x, so if both drivers are built-in care must be
# taken to initialize them in the correct order. Link order is the only way
# to ensure this currently.
+# Similarly, buddy must come first since it is used by other drivers.
+obj-$(CONFIG_GPU_BUDDY) += buddy.o
obj-y += host1x/ drm/ vga/ tests/
obj-$(CONFIG_IMX_IPUV3_CORE) += ipu-v3/
obj-$(CONFIG_TRACE_GPU_MEM) += trace/
obj-$(CONFIG_NOVA_CORE) += nova-core/
-obj-$(CONFIG_GPU_BUDDY) += buddy.o
^ permalink raw reply [flat|nested] 682+ messages in thread* [PATCH 6.18 675/675] KVM: SVM: Bump asid_generation on CPU online to avoid ASID collision after hotplug
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (673 preceding siblings ...)
2026-07-30 14:16 ` [PATCH 6.18 674/675] gpu: Fix uninitialized buddy for built-in drivers Greg Kroah-Hartman
@ 2026-07-30 14:16 ` Greg Kroah-Hartman
2026-07-30 18:17 ` [PATCH 6.18 000/675] 6.18.42-rc1 review Miguel Ojeda
` (4 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Greg Kroah-Hartman @ 2026-07-30 14:16 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Chandrakanth Silveru,
Srikanth Aithal, K Prateek Nayak, Tom Lendacky, Nikunj A Dadhania,
Paolo Bonzini
6.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Nikunj A Dadhania <nikunj@amd.com>
commit 25f744ffa0c8e799e06250ce2e618367b166b0d4 upstream.
If a vCPU stays scheduled out (or blocked) while the last pCPU it ran
on goes through a hotplug cycle (online->offline->online), and the vCPU
then resumes execution on the same pCPU, then it is possible for it to
run with an ASID that has now been assigned to a different vCPU,
resulting in stale TLB translations being used.
svm_enable_virtualization_cpu() resets asid_generation to 1 and sets
next_asid to max_asid + 1 on every CPU online event, including hotplug
cycles. Because next_asid starts beyond the pool boundary, the first
call to new_asid() after an online event always wraps the pool,
incrementing asid_generation to 2 and assigning ASIDs starting from
min_asid.
Consider two vCPUs from different VMs, vCPU-A pinned to CPU-X holding
asid_generation=2 and ASID=N from before the hotplug event:
1. CPU-X goes offline and back online: asid_generation resets to 1,
next_asid = max_asid + 1.
2. One or more vCPUs migrate to CPU-X and call new_asid(), wrapping
the pool and consuming ASIDs starting from min_asid. Eventually
vCPU-B from a different VM is assigned asid_generation=2, ASID=N
— the same ASID that vCPU-A held before the hotplug.
3. vCPU-A enters pre_svm_run() on CPU-X: current_vmcb->cpu is
unchanged so the migration branch is skipped. Its saved
asid_generation=2 matches sd->asid_generation=2, so the generation
check silently passes and vCPU-A continues running with ASID=N —
the same ASID just freshly assigned to vCPU-B.
Both vCPUs from different VMs now run on CPU-X with the same ASID,
causing them to share NPT TLB entries and producing stale translations.
The collision manifests as a KVM internal error (Suberror: 1, emulation
failure). The NPT page fault reports a faulting GPA far outside the
VM's physical memory range — a sign of stale TLB translations being
used. KVM falls back to instruction emulation, which fails on
FPU/XSave instructions (XRSTOR, STMXCSR) that the emulator does not
implement.
Fix this by incrementing asid_generation instead of resetting it to 1
in svm_enable_virtualization_cpu(). On module load, asid_generation
starts at 0 (memset) and the increment produces 1, identical to the
old behaviour. On subsequent hotplug cycles the generation advances
beyond any value a vCPU previously observed on this CPU, so the
generation check in pre_svm_run() reliably forces new_asid() on every
vCPU after every hotplug cycle.
Fixes: 774c47f1d78e ("[PATCH] KVM: cpu hotplug support")
Reported-by: Chandrakanth Silveru <Chandrakanth.Silveru@amd.com>
Tested-by: Srikanth Aithal <Srikanth.Aithal@amd.com>
Reviewed-by: K Prateek Nayak <kprateek.nayak@amd.com>
Reviewed-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Nikunj A Dadhania <nikunj@amd.com>
Message-ID: <20260715063506.672432-1-nikunj@amd.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/x86/kvm/svm/svm.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
--- a/arch/x86/kvm/svm/svm.c
+++ b/arch/x86/kvm/svm/svm.c
@@ -523,7 +523,12 @@ static int svm_enable_virtualization_cpu
return -EBUSY;
sd = per_cpu_ptr(&svm_data, me);
- sd->asid_generation = 1;
+ /*
+ * Bump the current asid_generation value to ensure any vCPU that
+ * previously ran on this CPU sees a stale generation and is forced
+ * to acquire a new ASID, preventing a latent ASID collision.
+ */
+ sd->asid_generation++;
sd->max_asid = cpuid_ebx(SVM_CPUID_FUNC) - 1;
sd->next_asid = sd->max_asid + 1;
sd->min_asid = max_sev_asid + 1;
^ permalink raw reply [flat|nested] 682+ messages in thread* Re: [PATCH 6.18 000/675] 6.18.42-rc1 review
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (674 preceding siblings ...)
2026-07-30 14:16 ` [PATCH 6.18 675/675] KVM: SVM: Bump asid_generation on CPU online to avoid ASID collision after hotplug Greg Kroah-Hartman
@ 2026-07-30 18:17 ` Miguel Ojeda
2026-07-30 18:30 ` Wentao Guan
` (3 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Miguel Ojeda @ 2026-07-30 18:17 UTC (permalink / raw)
To: gregkh
Cc: achill, akpm, broonie, conor, f.fainelli, hargar, jonathanh,
linux-kernel, linux, lkft-triage, patches, patches, pavel,
rwarsow, shuah, sr, stable, sudipm.mukherjee, torvalds,
Miguel Ojeda, Joel Fernandes, David Airlie, Simona Vetter,
dri-devel
On Thu, 30 Jul 2026 16:05:30 +0200 Greg Kroah-Hartman <gregkh@linuxfoundation.org> wrote:
>
> This is the start of the stable review cycle for the 6.18.42 release.
> There are 675 patches in this series, all will be posted as a response
> to this one. If anyone has any issues with these being applied, please
> let me know.
>
> Responses should be made by Sat, 01 Aug 2026 14:13:45 +0000.
> Anything received after that time might be too late.
Boot-tested under QEMU for Rust x86_64, arm64 and riscv64; built-tested
for loongarch64 and arm32:
Tested-by: Miguel Ojeda <ojeda@kernel.org>
I detected in the middle of the build lines like:
find: 'lib': No such file or directory
It looks like we need:
ee8bfb15d02d ("drm: drop lib from header search path.")
to go together with the one that was backported:
5e7b3c10420e ("gpu: Move DRM buddy allocator one level up (part two)")
Having said that, there is something going on a bit confusing: commits
"part one" (4a9671a03f2b) and "part two" (ba110db8e1bc) in mainline seem
to have been merged into just the "part two" above in this -rc. Is that
intentional? I am asking because the original removal of the `lib`
folder happened in "part one" in mainline, so I was expecting to have to
point to that one above, but it doesn't exist on its own.
Cc: Joel Fernandes <joelagnelf@nvidia.com>
Cc: David Airlie <airlied@gmail.com>
Cc: Simona Vetter <simona@ffwll.ch>
Cc: dri-devel@lists.freedesktop.org
I hope that helps & thanks!
Cheers,
Miguel
^ permalink raw reply [flat|nested] 682+ messages in thread* Re: [PATCH 6.18 000/675] 6.18.42-rc1 review
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (675 preceding siblings ...)
2026-07-30 18:17 ` [PATCH 6.18 000/675] 6.18.42-rc1 review Miguel Ojeda
@ 2026-07-30 18:30 ` Wentao Guan
2026-07-30 18:39 ` Florian Fainelli
` (2 subsequent siblings)
679 siblings, 0 replies; 682+ messages in thread
From: Wentao Guan @ 2026-07-30 18:30 UTC (permalink / raw)
To: gregkh
Cc: achill, akpm, broonie, conor, f.fainelli, hargar, jonathanh,
linux-kernel, linux, lkft-triage, patches, patches, pavel,
rwarsow, shuah, sr, stable, sudipm.mukherjee, torvalds,
Wentao Guan
Hello,
Build tested in our x86,arm64,loongarch,riscv config successfully without error.
Tested-by: Wentao Guan <guanwentao@uniontech.com>
BRs
Wentao Guan
defconfigs:
https://gist.github.com/opsiff/a840ae9e3d6857f5b7bacb9cdc49f8e9
Log:
Linux version 6.18.42-rc1-gd0792856e095 (guanwentao@uos-PC) (aarch64-linux-gnu-gcc-12 (Deepin 12.3.0-17deepin8) 12.3.0, GNU ld (GNU Binutils for Deepin) 2.41) # SMP PREEMPT_DYNAMIC
Linux version 6.18.42-rc1-gd0792856e095 (guanwentao@uos-PC) (aarch64-linux-gnu-gcc-12 (Deepin 12.3.0-17deepin8) 12.3.0, GNU ld (GNU Binutils for Deepin) 2.41) #2 SMP PREEMPT_DYNAMIC Fri Jul 31 01:39:13 CST 2026
Linux version 6.18.42-rc1-gd0792856e095 (guanwentao@uos-PC) (loongarch64-linux-gnu-gcc-12 (Deepin 12.3.0-17deepin8) 12.3.0, GNU ld (GNU Binutils for Deepin) 2.41) # SMP PREEMPT_DYNAMIC
Linux version 6.18.42-rc1-gd0792856e095 (guanwentao@uos-PC) (loongarch64-linux-gnu-gcc-12 (Deepin 12.3.0-17deepin8) 12.3.0, GNU ld (GNU Binutils for Deepin) 2.41) #3 SMP PREEMPT_DYNAMIC Fri Jul 31 01:57:34 CST 2026
Linux version 6.18.42-rc1+ (guanwentao@uos-PC) (riscv64-linux-gnu-gcc-12 (Deepin 12.3.0-17deepin8) 12.3.0, GNU ld (GNU Binutils for Deepin) 2.41) # SMP PREEMPT
Linux version 6.18.42-rc1+ (guanwentao@uos-PC) (riscv64-linux-gnu-gcc-12 (Deepin 12.3.0-17deepin8) 12.3.0, GNU ld (GNU Binutils for Deepin) 2.41) #4 SMP PREEMPT Fri Jul 31 02:14:48 CST 2026
Linux version 6.18.42-rc1-gd0792856e095 (guanwentao@uos-PC) (gcc (Deepin 12.3.0-17deepin15) 12.3.0, GNU ld (GNU Binutils for Deepin) 2.41) # SMP PREEMPT_DYNAMIC
Linux version 6.18.42-rc1-gd0792856e095 (guanwentao@uos-PC) (gcc (Deepin 12.3.0-17deepin15) 12.3.0, GNU ld (GNU Binutils for Deepin) 2.41) #1 SMP PREEMPT_DYNAMIC Fri Jul 31 01:18:17 CST 2026
^ permalink raw reply [flat|nested] 682+ messages in thread* Re: [PATCH 6.18 000/675] 6.18.42-rc1 review
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (676 preceding siblings ...)
2026-07-30 18:30 ` Wentao Guan
@ 2026-07-30 18:39 ` Florian Fainelli
2026-07-30 20:06 ` Brett A C Sheffield
2026-07-30 20:14 ` Peter Schneider
679 siblings, 0 replies; 682+ messages in thread
From: Florian Fainelli @ 2026-07-30 18:39 UTC (permalink / raw)
To: Greg Kroah-Hartman, stable
Cc: patches, linux-kernel, torvalds, akpm, linux, shuah, patches,
lkft-triage, pavel, jonathanh, sudipm.mukherjee, rwarsow, conor,
hargar, broonie, achill, sr
On 7/30/26 07:05, Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 6.18.42 release.
> There are 675 patches in this series, all will be posted as a response
> to this one. If anyone has any issues with these being applied, please
> let me know.
>
> Responses should be made by Sat, 01 Aug 2026 14:13:45 +0000.
> Anything received after that time might be too late.
>
> The whole patch series can be found in one patch at:
> https://www.kernel.org/pub/linux/kernel/v6.x/stable-review/patch-6.18.42-rc1.gz
> or in the git tree and branch at:
> git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-6.18.y
> and the diffstat can be found below.
>
> thanks,
>
> greg k-h
On ARCH_BRCMSTB using 32-bit and 64-bit ARM kernels, build tested on
BMIPS_GENERIC:
Tested-by: Florian Fainelli <florian.fainelli@broadcom.com>
--
Florian
^ permalink raw reply [flat|nested] 682+ messages in thread* Re: [PATCH 6.18 000/675] 6.18.42-rc1 review
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (677 preceding siblings ...)
2026-07-30 18:39 ` Florian Fainelli
@ 2026-07-30 20:06 ` Brett A C Sheffield
2026-07-30 20:14 ` Peter Schneider
679 siblings, 0 replies; 682+ messages in thread
From: Brett A C Sheffield @ 2026-07-30 20:06 UTC (permalink / raw)
To: gregkh
Cc: stable, patches, linux-kernel, torvalds, akpm, linux, shuah,
patches, lkft-triage, pavel, jonathanh, f.fainelli,
sudipm.mukherjee, rwarsow, conor, hargar, broonie, achill, sr,
Brett A C Sheffield
# Librecast Test Results
020/020 [ OK ] liblcrq
010/010 [ OK ] libmld
120/120 [ OK ] liblibrecast
CPU/kernel: Linux auntie 6.18.42-rc1-gd0792856e095 #1 SMP PREEMPT_DYNAMIC Thu Jul 30 19:57:32 -00 2026 x86_64 AMD Ryzen 9 9950X 16-Core Processor AuthenticAMD GNU/Linux
Tested-by: Brett A C Sheffield <bacs@librecast.net>
^ permalink raw reply [flat|nested] 682+ messages in thread* Re: [PATCH 6.18 000/675] 6.18.42-rc1 review
2026-07-30 14:05 [PATCH 6.18 000/675] 6.18.42-rc1 review Greg Kroah-Hartman
` (678 preceding siblings ...)
2026-07-30 20:06 ` Brett A C Sheffield
@ 2026-07-30 20:14 ` Peter Schneider
679 siblings, 0 replies; 682+ messages in thread
From: Peter Schneider @ 2026-07-30 20:14 UTC (permalink / raw)
To: Greg Kroah-Hartman, stable
Cc: patches, linux-kernel, torvalds, akpm, linux, shuah, patches,
lkft-triage, pavel, jonathanh, f.fainelli, sudipm.mukherjee,
rwarsow, conor, hargar, broonie, achill, sr
Am 30.07.2026 um 16:05 schrieb Greg Kroah-Hartman:
> This is the start of the stable review cycle for the 6.18.42 release.
> There are 675 patches in this series, all will be posted as a response
> to this one. If anyone has any issues with these being applied, please
> let me know.
Builds, boots and works on my 2-socket Ivy Bridge Xeon E5-2697 v2 server. No dmesg oddities or regressions found.
Tested-by: Peter Schneider <pschneider1968@googlemail.com>
Beste Grüße,
Peter Schneider
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