[PATCH bpf-next v2 0/8] bpf: Add bpf_rcu_read_lock() support

[PATCH bpf-next v2 0/8] bpf: Add bpf_rcu_read_lock() support

[Yonghong Song]

Currently, without rcu attribute info in BTF, the verifier treats
rcu tagged pointer as a normal pointer. This might be a problem
for sleepable program where rcu_read_lock()/unlock() is not available.
For example, for a sleepable fentry program, if rcu protected memory
access is interleaved with a sleepable helper/kfunc, it is possible
the memory access after the sleepable helper/kfunc might be invalid
since the object might have been freed then. Even without
a sleepable helper/kfunc, without rcu_read_lock() protection,
it is possible that the rcu protected object might be release
in the middle of bpf program execution which may cause incorrect
result.

To prevent above cases, enable btf_type_tag("rcu") attributes,
introduce new bpf_rcu_read_lock/unlock() kfuncs and add verifier support.

In the rest of patch set, Patch 1 enabled btf_type_tag for __rcu
attribute. Patches 2 and 3 are refactoring patches. Patch 4 added new
bpf_rcu_read_lock/unlock() kfuncs. Patch 5 added verifier support
and Patch 6 enabled sleepable program support for cgrp local storage.
Patch 7 added some tests for new helpers and verifier support and
Patch 8 added new test to the deny list for s390x arch.

Changelogs:
  v1 -> v2:
    . use kfunc instead of helper for bpf_rcu_read_lock/unlock.
    . not use MEM_RCU bpf_type_flag, instead use active_rcu_lock
      in reg state to identify rcu ptr's.
    . Add more self tests.
    . add new test to s390x deny list.

Yonghong Song (8):
  compiler_types: Define __rcu as __attribute__((btf_type_tag("rcu")))
  bpf: Refactor btf_struct_access callback interface
  bpf: Abstract out functions to check sleepable helpers
  bpf: Add kfunc bpf_rcu_read_lock/unlock()
  bpf: Add bpf_rcu_read_lock() verifier support
  bpf: Enable sleeptable support for cgrp local storage
  selftests/bpf: Add tests for bpf_rcu_read_lock()
  selftests/bpf: Add rcu_read_lock test to s390x deny list

 include/linux/bpf.h                           |  15 +-
 include/linux/bpf_lsm.h                       |   6 +
 include/linux/bpf_verifier.h                  |   7 +
 include/linux/btf.h                           |   2 +
 include/linux/compiler_types.h                |   3 +-
 include/linux/filter.h                        |   4 +-
 include/linux/trace_events.h                  |   8 +
 kernel/bpf/bpf_lsm.c                          |  20 +-
 kernel/bpf/btf.c                              |  65 +++-
 kernel/bpf/helpers.c                          |  25 +-
 kernel/bpf/verifier.c                         | 111 +++++-
 kernel/trace/bpf_trace.c                      |  22 +-
 net/bpf/bpf_dummy_struct_ops.c                |   6 +-
 net/core/filter.c                             |  20 +-
 net/ipv4/bpf_tcp_ca.c                         |   6 +-
 net/netfilter/nf_conntrack_bpf.c              |   3 +-
 tools/testing/selftests/bpf/DENYLIST.s390x    |   1 +
 .../selftests/bpf/prog_tests/rcu_read_lock.c  | 127 +++++++
 .../selftests/bpf/progs/rcu_read_lock.c       | 353 ++++++++++++++++++
 19 files changed, 733 insertions(+), 71 deletions(-)
 create mode 100644 tools/testing/selftests/bpf/prog_tests/rcu_read_lock.c
 create mode 100644 tools/testing/selftests/bpf/progs/rcu_read_lock.c

-- 
2.30.2

[PATCH bpf-next v2 1/8] compiler_types: Define __rcu as __attribute__((btf_type_tag("rcu")))

[Yonghong Song]

Currently, without rcu attribute info in BTF, the verifier treats
rcu tagged pointer as a normal pointer. This might be a problem
for sleepable program where rcu_read_lock()/unlock() is not available.
For example, for a sleepable fentry program, if rcu protected memory
access is interleaved with a sleepable helper/kfunc, it is possible
the memory access after the sleepable helper/kfunc might be invalid
since the object might have been freed then. To prevent such cases,
introducing rcu tagging for memory accesses in verifier can help
to reject such programs.

To enable rcu tagging in BTF, during kernel compilation,
define __rcu as attribute btf_type_tag("rcu") so __rcu information can
be preserved in dwarf and btf, and later can be used for bpf prog verification.

Acked-by: KP Singh <kpsingh@kernel.org>
Signed-off-by: Yonghong Song <yhs@fb.com>
---
 include/linux/compiler_types.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/include/linux/compiler_types.h b/include/linux/compiler_types.h
index eb0466236661..7c1afe0f4129 100644
--- a/include/linux/compiler_types.h
+++ b/include/linux/compiler_types.h
@@ -49,7 +49,8 @@ static inline void __chk_io_ptr(const volatile void __iomem *ptr) { }
 # endif
 # define __iomem
 # define __percpu	BTF_TYPE_TAG(percpu)
-# define __rcu
+# define __rcu		BTF_TYPE_TAG(rcu)
+
 # define __chk_user_ptr(x)	(void)0
 # define __chk_io_ptr(x)	(void)0
 /* context/locking */
-- 
2.30.2

[PATCH bpf-next v2 2/8] bpf: Refactor btf_struct_access callback interface

[Yonghong Song]

Current bpf_verifier_ops->btf_struct_access() callback function walks through
struct member access chain and gathers information like next_btf_id and
bpf_type_flag (for __user and __percpu). In later patches, additional
information like whether the pointer is tagged with __rcu will be gathered
as well. So refactor btf_struct_access() interface to wrap next_btf_id
and bpf_type_flag in a structure, so the new field can be easily added
to the new structure without modifying all callback functions.

Signed-off-by: Yonghong Song <yhs@fb.com>
---
 include/linux/bpf.h              | 11 ++++++++---
 include/linux/filter.h           |  4 ++--
 kernel/bpf/btf.c                 | 25 ++++++++++++-------------
 kernel/bpf/verifier.c            | 20 ++++++++++----------
 net/bpf/bpf_dummy_struct_ops.c   |  6 ++----
 net/core/filter.c                | 20 ++++++++------------
 net/ipv4/bpf_tcp_ca.c            |  6 ++----
 net/netfilter/nf_conntrack_bpf.c |  3 +--
 8 files changed, 45 insertions(+), 50 deletions(-)

diff --git a/include/linux/bpf.h b/include/linux/bpf.h
index 798aec816970..5011cb50abf1 100644
--- a/include/linux/bpf.h
+++ b/include/linux/bpf.h
@@ -758,6 +758,11 @@ struct bpf_prog_ops {
 			union bpf_attr __user *uattr);
 };
 
+struct btf_struct_access_info {
+	u32 next_btf_id;
+	enum bpf_type_flag flag;
+};
+
 struct bpf_verifier_ops {
 	/* return eBPF function prototype for verification */
 	const struct bpf_func_proto *
@@ -782,7 +787,7 @@ struct bpf_verifier_ops {
 				 const struct btf *btf,
 				 const struct btf_type *t, int off, int size,
 				 enum bpf_access_type atype,
-				 u32 *next_btf_id, enum bpf_type_flag *flag);
+				 struct btf_struct_access_info *info);
 };
 
 struct bpf_prog_offload_ops {
@@ -2070,7 +2075,7 @@ static inline bool bpf_tracing_btf_ctx_access(int off, int size,
 int btf_struct_access(struct bpf_verifier_log *log, const struct btf *btf,
 		      const struct btf_type *t, int off, int size,
 		      enum bpf_access_type atype,
-		      u32 *next_btf_id, enum bpf_type_flag *flag);
+		      struct btf_struct_access_info *info);
 bool btf_struct_ids_match(struct bpf_verifier_log *log,
 			  const struct btf *btf, u32 id, int off,
 			  const struct btf *need_btf, u32 need_type_id,
@@ -2323,7 +2328,7 @@ static inline int btf_struct_access(struct bpf_verifier_log *log,
 				    const struct btf *btf,
 				    const struct btf_type *t, int off, int size,
 				    enum bpf_access_type atype,
-				    u32 *next_btf_id, enum bpf_type_flag *flag)
+				    struct btf_struct_access_info *info)
 {
 	return -EACCES;
 }
diff --git a/include/linux/filter.h b/include/linux/filter.h
index efc42a6e3aed..75340a5b83d3 100644
--- a/include/linux/filter.h
+++ b/include/linux/filter.h
@@ -570,8 +570,8 @@ DECLARE_STATIC_KEY_FALSE(bpf_stats_enabled_key);
 extern struct mutex nf_conn_btf_access_lock;
 extern int (*nfct_btf_struct_access)(struct bpf_verifier_log *log, const struct btf *btf,
 				     const struct btf_type *t, int off, int size,
-				     enum bpf_access_type atype, u32 *next_btf_id,
-				     enum bpf_type_flag *flag);
+				     enum bpf_access_type atype,
+				     struct btf_struct_access_info *info);
 
 typedef unsigned int (*bpf_dispatcher_fn)(const void *ctx,
 					  const struct bpf_insn *insnsi,
diff --git a/kernel/bpf/btf.c b/kernel/bpf/btf.c
index 5579ff3a5b54..cf16c0ead9f4 100644
--- a/kernel/bpf/btf.c
+++ b/kernel/bpf/btf.c
@@ -5639,7 +5639,7 @@ enum bpf_struct_walk_result {
 
 static int btf_struct_walk(struct bpf_verifier_log *log, const struct btf *btf,
 			   const struct btf_type *t, int off, int size,
-			   u32 *next_btf_id, enum bpf_type_flag *flag)
+			   struct btf_struct_access_info *info)
 {
 	u32 i, moff, mtrue_end, msize = 0, total_nelems = 0;
 	const struct btf_type *mtype, *elem_type = NULL;
@@ -5818,7 +5818,7 @@ static int btf_struct_walk(struct bpf_verifier_log *log, const struct btf *btf,
 
 			/* return if the offset matches the member offset */
 			if (off == moff) {
-				*next_btf_id = mid;
+				info->next_btf_id = mid;
 				return WALK_STRUCT;
 			}
 
@@ -5853,8 +5853,8 @@ static int btf_struct_walk(struct bpf_verifier_log *log, const struct btf *btf,
 
 			stype = btf_type_skip_modifiers(btf, mtype->type, &id);
 			if (btf_type_is_struct(stype)) {
-				*next_btf_id = id;
-				*flag = tmp_flag;
+				info->next_btf_id = id;
+				info->flag = tmp_flag;
 				return WALK_PTR;
 			}
 		}
@@ -5881,22 +5881,20 @@ static int btf_struct_walk(struct bpf_verifier_log *log, const struct btf *btf,
 int btf_struct_access(struct bpf_verifier_log *log, const struct btf *btf,
 		      const struct btf_type *t, int off, int size,
 		      enum bpf_access_type atype __maybe_unused,
-		      u32 *next_btf_id, enum bpf_type_flag *flag)
+		      struct btf_struct_access_info *info)
 {
-	enum bpf_type_flag tmp_flag = 0;
+	struct btf_struct_access_info tmp_info = {};
 	int err;
-	u32 id;
 
 	do {
-		err = btf_struct_walk(log, btf, t, off, size, &id, &tmp_flag);
+		err = btf_struct_walk(log, btf, t, off, size, &tmp_info);
 
 		switch (err) {
 		case WALK_PTR:
 			/* If we found the pointer or scalar on t+off,
 			 * we're done.
 			 */
-			*next_btf_id = id;
-			*flag = tmp_flag;
+			*info = tmp_info;
 			return PTR_TO_BTF_ID;
 		case WALK_SCALAR:
 			return SCALAR_VALUE;
@@ -5905,7 +5903,7 @@ int btf_struct_access(struct bpf_verifier_log *log, const struct btf *btf,
 			 * by diving in it. At this point the offset is
 			 * aligned with the new type, so set it to 0.
 			 */
-			t = btf_type_by_id(btf, id);
+			t = btf_type_by_id(btf, tmp_info.next_btf_id);
 			off = 0;
 			break;
 		default:
@@ -5942,7 +5940,7 @@ bool btf_struct_ids_match(struct bpf_verifier_log *log,
 			  bool strict)
 {
 	const struct btf_type *type;
-	enum bpf_type_flag flag;
+	struct btf_struct_access_info info = {};
 	int err;
 
 	/* Are we already done? */
@@ -5958,7 +5956,7 @@ bool btf_struct_ids_match(struct bpf_verifier_log *log,
 	type = btf_type_by_id(btf, id);
 	if (!type)
 		return false;
-	err = btf_struct_walk(log, btf, type, off, 1, &id, &flag);
+	err = btf_struct_walk(log, btf, type, off, 1, &info);
 	if (err != WALK_STRUCT)
 		return false;
 
@@ -5967,6 +5965,7 @@ bool btf_struct_ids_match(struct bpf_verifier_log *log,
 	 * continue the search with offset 0 in the new
 	 * type.
 	 */
+	id = info.next_btf_id;
 	if (!btf_types_are_same(btf, id, need_btf, need_type_id)) {
 		off = 0;
 		goto again;
diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c
index d3b75aa0c54d..4d50f9568245 100644
--- a/kernel/bpf/verifier.c
+++ b/kernel/bpf/verifier.c
@@ -4648,8 +4648,7 @@ static int check_ptr_to_btf_access(struct bpf_verifier_env *env,
 	struct bpf_reg_state *reg = regs + regno;
 	const struct btf_type *t = btf_type_by_id(reg->btf, reg->btf_id);
 	const char *tname = btf_name_by_offset(reg->btf, t->name_off);
-	enum bpf_type_flag flag = 0;
-	u32 btf_id;
+	struct btf_struct_access_info info = {};
 	int ret;
 
 	if (off < 0) {
@@ -4684,7 +4683,7 @@ static int check_ptr_to_btf_access(struct bpf_verifier_env *env,
 
 	if (env->ops->btf_struct_access) {
 		ret = env->ops->btf_struct_access(&env->log, reg->btf, t,
-						  off, size, atype, &btf_id, &flag);
+						  off, size, atype, &info);
 	} else {
 		if (atype != BPF_READ) {
 			verbose(env, "only read is supported\n");
@@ -4692,7 +4691,7 @@ static int check_ptr_to_btf_access(struct bpf_verifier_env *env,
 		}
 
 		ret = btf_struct_access(&env->log, reg->btf, t, off, size,
-					atype, &btf_id, &flag);
+					atype, &info);
 	}
 
 	if (ret < 0)
@@ -4702,10 +4701,11 @@ static int check_ptr_to_btf_access(struct bpf_verifier_env *env,
 	 * also inherit the untrusted flag.
 	 */
 	if (type_flag(reg->type) & PTR_UNTRUSTED)
-		flag |= PTR_UNTRUSTED;
+		info.flag |= PTR_UNTRUSTED;
 
 	if (atype == BPF_READ && value_regno >= 0)
-		mark_btf_ld_reg(env, regs, value_regno, ret, reg->btf, btf_id, flag);
+		mark_btf_ld_reg(env, regs, value_regno, ret, reg->btf, info.next_btf_id,
+				info.flag);
 
 	return 0;
 }
@@ -4717,11 +4717,10 @@ static int check_ptr_to_map_access(struct bpf_verifier_env *env,
 				   int value_regno)
 {
 	struct bpf_reg_state *reg = regs + regno;
+	struct btf_struct_access_info info = {};
 	struct bpf_map *map = reg->map_ptr;
-	enum bpf_type_flag flag = 0;
 	const struct btf_type *t;
 	const char *tname;
-	u32 btf_id;
 	int ret;
 
 	if (!btf_vmlinux) {
@@ -4756,12 +4755,13 @@ static int check_ptr_to_map_access(struct bpf_verifier_env *env,
 		return -EACCES;
 	}
 
-	ret = btf_struct_access(&env->log, btf_vmlinux, t, off, size, atype, &btf_id, &flag);
+	ret = btf_struct_access(&env->log, btf_vmlinux, t, off, size, atype, &info);
 	if (ret < 0)
 		return ret;
 
 	if (value_regno >= 0)
-		mark_btf_ld_reg(env, regs, value_regno, ret, btf_vmlinux, btf_id, flag);
+		mark_btf_ld_reg(env, regs, value_regno, ret, btf_vmlinux, info.next_btf_id,
+				info.flag);
 
 	return 0;
 }
diff --git a/net/bpf/bpf_dummy_struct_ops.c b/net/bpf/bpf_dummy_struct_ops.c
index e78dadfc5829..dd72028ac5b1 100644
--- a/net/bpf/bpf_dummy_struct_ops.c
+++ b/net/bpf/bpf_dummy_struct_ops.c
@@ -159,8 +159,7 @@ static int bpf_dummy_ops_btf_struct_access(struct bpf_verifier_log *log,
 					   const struct btf *btf,
 					   const struct btf_type *t, int off,
 					   int size, enum bpf_access_type atype,
-					   u32 *next_btf_id,
-					   enum bpf_type_flag *flag)
+					   struct btf_struct_access_info *info)
 {
 	const struct btf_type *state;
 	s32 type_id;
@@ -177,8 +176,7 @@ static int bpf_dummy_ops_btf_struct_access(struct bpf_verifier_log *log,
 		return -EACCES;
 	}
 
-	err = btf_struct_access(log, btf, t, off, size, atype, next_btf_id,
-				flag);
+	err = btf_struct_access(log, btf, t, off, size, atype, info);
 	if (err < 0)
 		return err;
 
diff --git a/net/core/filter.c b/net/core/filter.c
index cb3b635e35be..98f10147c677 100644
--- a/net/core/filter.c
+++ b/net/core/filter.c
@@ -8653,26 +8653,24 @@ EXPORT_SYMBOL_GPL(nf_conn_btf_access_lock);
 
 int (*nfct_btf_struct_access)(struct bpf_verifier_log *log, const struct btf *btf,
 			      const struct btf_type *t, int off, int size,
-			      enum bpf_access_type atype, u32 *next_btf_id,
-			      enum bpf_type_flag *flag);
+			      enum bpf_access_type atype,
+			      struct btf_struct_access_info *info);
 EXPORT_SYMBOL_GPL(nfct_btf_struct_access);
 
 static int tc_cls_act_btf_struct_access(struct bpf_verifier_log *log,
 					const struct btf *btf,
 					const struct btf_type *t, int off,
 					int size, enum bpf_access_type atype,
-					u32 *next_btf_id,
-					enum bpf_type_flag *flag)
+					struct btf_struct_access_info *info)
 {
 	int ret = -EACCES;
 
 	if (atype == BPF_READ)
-		return btf_struct_access(log, btf, t, off, size, atype, next_btf_id,
-					 flag);
+		return btf_struct_access(log, btf, t, off, size, atype, info);
 
 	mutex_lock(&nf_conn_btf_access_lock);
 	if (nfct_btf_struct_access)
-		ret = nfct_btf_struct_access(log, btf, t, off, size, atype, next_btf_id, flag);
+		ret = nfct_btf_struct_access(log, btf, t, off, size, atype, info);
 	mutex_unlock(&nf_conn_btf_access_lock);
 
 	return ret;
@@ -8741,18 +8739,16 @@ static int xdp_btf_struct_access(struct bpf_verifier_log *log,
 				 const struct btf *btf,
 				 const struct btf_type *t, int off,
 				 int size, enum bpf_access_type atype,
-				 u32 *next_btf_id,
-				 enum bpf_type_flag *flag)
+				 struct btf_struct_access_info *info)
 {
 	int ret = -EACCES;
 
 	if (atype == BPF_READ)
-		return btf_struct_access(log, btf, t, off, size, atype, next_btf_id,
-					 flag);
+		return btf_struct_access(log, btf, t, off, size, atype, info);
 
 	mutex_lock(&nf_conn_btf_access_lock);
 	if (nfct_btf_struct_access)
-		ret = nfct_btf_struct_access(log, btf, t, off, size, atype, next_btf_id, flag);
+		ret = nfct_btf_struct_access(log, btf, t, off, size, atype, info);
 	mutex_unlock(&nf_conn_btf_access_lock);
 
 	return ret;
diff --git a/net/ipv4/bpf_tcp_ca.c b/net/ipv4/bpf_tcp_ca.c
index 6da16ae6a962..dde4ac3f44fd 100644
--- a/net/ipv4/bpf_tcp_ca.c
+++ b/net/ipv4/bpf_tcp_ca.c
@@ -72,14 +72,12 @@ static int bpf_tcp_ca_btf_struct_access(struct bpf_verifier_log *log,
 					const struct btf *btf,
 					const struct btf_type *t, int off,
 					int size, enum bpf_access_type atype,
-					u32 *next_btf_id,
-					enum bpf_type_flag *flag)
+					struct btf_struct_access_info *info)
 {
 	size_t end;
 
 	if (atype == BPF_READ)
-		return btf_struct_access(log, btf, t, off, size, atype, next_btf_id,
-					 flag);
+		return btf_struct_access(log, btf, t, off, size, atype, info);
 
 	if (t != tcp_sock_type) {
 		bpf_log(log, "only read is supported\n");
diff --git a/net/netfilter/nf_conntrack_bpf.c b/net/netfilter/nf_conntrack_bpf.c
index 8639e7efd0e2..e09b0dfd8115 100644
--- a/net/netfilter/nf_conntrack_bpf.c
+++ b/net/netfilter/nf_conntrack_bpf.c
@@ -194,8 +194,7 @@ static int _nf_conntrack_btf_struct_access(struct bpf_verifier_log *log,
 					   const struct btf *btf,
 					   const struct btf_type *t, int off,
 					   int size, enum bpf_access_type atype,
-					   u32 *next_btf_id,
-					   enum bpf_type_flag *flag)
+					   struct btf_struct_access_info *info)
 {
 	const struct btf_type *ncit;
 	const struct btf_type *nct;
-- 
2.30.2

[PATCH bpf-next v2 3/8] bpf: Abstract out functions to check sleepable helpers

[Yonghong Song]

Abstract out two functions to check whether a particular helper
is sleepable or not for bpf_lsm and bpf_trace. These two
functions will be used later to check whether a helper is
sleepable or not in verifier. There is no functionality
change.

Signed-off-by: Yonghong Song <yhs@fb.com>
---
 include/linux/bpf_lsm.h      |  6 ++++++
 include/linux/trace_events.h |  8 ++++++++
 kernel/bpf/bpf_lsm.c         | 20 ++++++++++++++++----
 kernel/trace/bpf_trace.c     | 22 ++++++++++++++++++----
 4 files changed, 48 insertions(+), 8 deletions(-)

diff --git a/include/linux/bpf_lsm.h b/include/linux/bpf_lsm.h
index 4bcf76a9bb06..d99b1caf118e 100644
--- a/include/linux/bpf_lsm.h
+++ b/include/linux/bpf_lsm.h
@@ -28,6 +28,7 @@ int bpf_lsm_verify_prog(struct bpf_verifier_log *vlog,
 			const struct bpf_prog *prog);
 
 bool bpf_lsm_is_sleepable_hook(u32 btf_id);
+const struct bpf_func_proto *bpf_lsm_sleepable_func_proto(enum bpf_func_id func_id);
 
 static inline struct bpf_storage_blob *bpf_inode(
 	const struct inode *inode)
@@ -50,6 +51,11 @@ static inline bool bpf_lsm_is_sleepable_hook(u32 btf_id)
 {
 	return false;
 }
+static inline const struct bpf_func_proto *
+bpf_lsm_sleepable_func_proto(enum bpf_func_id func_id)
+{
+	return NULL;
+}
 
 static inline int bpf_lsm_verify_prog(struct bpf_verifier_log *vlog,
 				      const struct bpf_prog *prog)
diff --git a/include/linux/trace_events.h b/include/linux/trace_events.h
index 20749bd9db71..ccf046bf253f 100644
--- a/include/linux/trace_events.h
+++ b/include/linux/trace_events.h
@@ -16,6 +16,8 @@ struct tracer;
 struct dentry;
 struct bpf_prog;
 union bpf_attr;
+struct bpf_func_proto;
+enum bpf_func_id;
 
 const char *trace_print_flags_seq(struct trace_seq *p, const char *delim,
 				  unsigned long flags,
@@ -748,6 +750,7 @@ int bpf_get_perf_event_info(const struct perf_event *event, u32 *prog_id,
 			    u32 *fd_type, const char **buf,
 			    u64 *probe_offset, u64 *probe_addr);
 int bpf_kprobe_multi_link_attach(const union bpf_attr *attr, struct bpf_prog *prog);
+const struct bpf_func_proto *bpf_tracing_sleepable_func_proto(enum bpf_func_id func_id);
 #else
 static inline unsigned int trace_call_bpf(struct trace_event_call *call, void *ctx)
 {
@@ -794,6 +797,11 @@ bpf_kprobe_multi_link_attach(const union bpf_attr *attr, struct bpf_prog *prog)
 {
 	return -EOPNOTSUPP;
 }
+static inline const struct bpf_func_proto *
+bpf_tracing_sleepable_func_proto(enum bpf_func_id func_id)
+{
+	return NULL;
+}
 #endif
 
 enum {
diff --git a/kernel/bpf/bpf_lsm.c b/kernel/bpf/bpf_lsm.c
index d6c9b3705f24..2f993a003389 100644
--- a/kernel/bpf/bpf_lsm.c
+++ b/kernel/bpf/bpf_lsm.c
@@ -192,6 +192,18 @@ static const struct bpf_func_proto bpf_get_attach_cookie_proto = {
 	.arg1_type	= ARG_PTR_TO_CTX,
 };
 
+const struct bpf_func_proto *bpf_lsm_sleepable_func_proto(enum bpf_func_id func_id)
+{
+	switch (func_id) {
+	case BPF_FUNC_ima_inode_hash:
+		return &bpf_ima_inode_hash_proto;
+	case BPF_FUNC_ima_file_hash:
+		return &bpf_ima_file_hash_proto;
+	default:
+		return NULL;
+	}
+}
+
 static const struct bpf_func_proto *
 bpf_lsm_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog)
 {
@@ -203,6 +215,10 @@ bpf_lsm_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog)
 			return func_proto;
 	}
 
+	func_proto = bpf_lsm_sleepable_func_proto(func_id);
+	if (func_proto)
+		return prog->aux->sleepable ? func_proto : NULL;
+
 	switch (func_id) {
 	case BPF_FUNC_inode_storage_get:
 		return &bpf_inode_storage_get_proto;
@@ -220,10 +236,6 @@ bpf_lsm_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog)
 		return &bpf_spin_unlock_proto;
 	case BPF_FUNC_bprm_opts_set:
 		return &bpf_bprm_opts_set_proto;
-	case BPF_FUNC_ima_inode_hash:
-		return prog->aux->sleepable ? &bpf_ima_inode_hash_proto : NULL;
-	case BPF_FUNC_ima_file_hash:
-		return prog->aux->sleepable ? &bpf_ima_file_hash_proto : NULL;
 	case BPF_FUNC_get_attach_cookie:
 		return bpf_prog_has_trampoline(prog) ? &bpf_get_attach_cookie_proto : NULL;
 #ifdef CONFIG_NET
diff --git a/kernel/trace/bpf_trace.c b/kernel/trace/bpf_trace.c
index f2d8d070d024..7804fa71d3f1 100644
--- a/kernel/trace/bpf_trace.c
+++ b/kernel/trace/bpf_trace.c
@@ -1383,9 +1383,27 @@ static int __init bpf_key_sig_kfuncs_init(void)
 late_initcall(bpf_key_sig_kfuncs_init);
 #endif /* CONFIG_KEYS */
 
+const struct bpf_func_proto *bpf_tracing_sleepable_func_proto(enum bpf_func_id func_id)
+{
+	switch (func_id) {
+	case BPF_FUNC_copy_from_user:
+		return &bpf_copy_from_user_proto;
+	case BPF_FUNC_copy_from_user_task:
+		return &bpf_copy_from_user_task_proto;
+	default:
+		return NULL;
+	}
+}
+
 static const struct bpf_func_proto *
 bpf_tracing_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog)
 {
+	const struct bpf_func_proto *func_proto;
+
+	func_proto = bpf_tracing_sleepable_func_proto(func_id);
+	if (func_proto)
+		return prog->aux->sleepable ? func_proto : NULL;
+
 	switch (func_id) {
 	case BPF_FUNC_map_lookup_elem:
 		return &bpf_map_lookup_elem_proto;
@@ -1484,10 +1502,6 @@ bpf_tracing_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog)
 		return &bpf_jiffies64_proto;
 	case BPF_FUNC_get_task_stack:
 		return &bpf_get_task_stack_proto;
-	case BPF_FUNC_copy_from_user:
-		return prog->aux->sleepable ? &bpf_copy_from_user_proto : NULL;
-	case BPF_FUNC_copy_from_user_task:
-		return prog->aux->sleepable ? &bpf_copy_from_user_task_proto : NULL;
 	case BPF_FUNC_snprintf_btf:
 		return &bpf_snprintf_btf_proto;
 	case BPF_FUNC_per_cpu_ptr:
-- 
2.30.2

[PATCH bpf-next v2 4/8] bpf: Add kfunc bpf_rcu_read_lock/unlock()

[Yonghong Song]

Add two kfunc's bpf_rcu_read_lock() and bpf_rcu_read_unlock(). These two kfunc's
can be used for all program types. A new kfunc hook type BTF_KFUNC_HOOK_GENERIC
is added which corresponds to prog type BPF_PROG_TYPE_UNSPEC, indicating the
kfunc intends to be used for all prog types.

The kfunc bpf_rcu_read_lock() is tagged with new flag KF_RCU_LOCK and
bpf_rcu_read_unlock() with new flag KF_RCU_UNLOCK. These two new flags
are used by the verifier to identify these two helpers.

Signed-off-by: Yonghong Song <yhs@fb.com>
---
 include/linux/bpf.h  |  3 +++
 include/linux/btf.h  |  2 ++
 kernel/bpf/btf.c     |  8 ++++++++
 kernel/bpf/helpers.c | 25 ++++++++++++++++++++++++-
 4 files changed, 37 insertions(+), 1 deletion(-)

For new kfuncs, I added KF_RCU_LOCK and KF_RCU_UNLOCK flags to
indicate a helper could be bpf_rcu_read_lock/unlock(). This could
be a waste for kfunc flag space as the flag is used to identify
one helper. Alternatively, we might identify kfunc based on
btf_id. Any suggestions are welcome.

diff --git a/include/linux/bpf.h b/include/linux/bpf.h
index 5011cb50abf1..b4bbcafd1c9b 100644
--- a/include/linux/bpf.h
+++ b/include/linux/bpf.h
@@ -2118,6 +2118,9 @@ bool bpf_prog_has_kfunc_call(const struct bpf_prog *prog);
 const struct btf_func_model *
 bpf_jit_find_kfunc_model(const struct bpf_prog *prog,
 			 const struct bpf_insn *insn);
+void bpf_rcu_read_lock(void);
+void bpf_rcu_read_unlock(void);
+
 struct bpf_core_ctx {
 	struct bpf_verifier_log *log;
 	const struct btf *btf;
diff --git a/include/linux/btf.h b/include/linux/btf.h
index d80345fa566b..8783ca7e6079 100644
--- a/include/linux/btf.h
+++ b/include/linux/btf.h
@@ -51,6 +51,8 @@
 #define KF_TRUSTED_ARGS (1 << 4) /* kfunc only takes trusted pointer arguments */
 #define KF_SLEEPABLE    (1 << 5) /* kfunc may sleep */
 #define KF_DESTRUCTIVE  (1 << 6) /* kfunc performs destructive actions */
+#define KF_RCU_LOCK     (1 << 7) /* kfunc does rcu_read_lock() */
+#define KF_RCU_UNLOCK   (1 << 8) /* kfunc does rcu_read_unlock() */
 
 /*
  * Return the name of the passed struct, if exists, or halt the build if for
diff --git a/kernel/bpf/btf.c b/kernel/bpf/btf.c
index cf16c0ead9f4..d2ee1669a2f3 100644
--- a/kernel/bpf/btf.c
+++ b/kernel/bpf/btf.c
@@ -199,6 +199,7 @@ DEFINE_IDR(btf_idr);
 DEFINE_SPINLOCK(btf_idr_lock);
 
 enum btf_kfunc_hook {
+	BTF_KFUNC_HOOK_GENERIC,
 	BTF_KFUNC_HOOK_XDP,
 	BTF_KFUNC_HOOK_TC,
 	BTF_KFUNC_HOOK_STRUCT_OPS,
@@ -7498,6 +7499,8 @@ static u32 *__btf_kfunc_id_set_contains(const struct btf *btf,
 static int bpf_prog_type_to_kfunc_hook(enum bpf_prog_type prog_type)
 {
 	switch (prog_type) {
+	case BPF_PROG_TYPE_UNSPEC:
+		return BTF_KFUNC_HOOK_GENERIC;
 	case BPF_PROG_TYPE_XDP:
 		return BTF_KFUNC_HOOK_XDP;
 	case BPF_PROG_TYPE_SCHED_CLS:
@@ -7526,6 +7529,11 @@ u32 *btf_kfunc_id_set_contains(const struct btf *btf,
 			       u32 kfunc_btf_id)
 {
 	enum btf_kfunc_hook hook;
+	u32 *kfunc_flags;
+
+	kfunc_flags = __btf_kfunc_id_set_contains(btf, BTF_KFUNC_HOOK_GENERIC, kfunc_btf_id);
+	if (kfunc_flags)
+		return kfunc_flags;
 
 	hook = bpf_prog_type_to_kfunc_hook(prog_type);
 	return __btf_kfunc_id_set_contains(btf, hook, kfunc_btf_id);
diff --git a/kernel/bpf/helpers.c b/kernel/bpf/helpers.c
index 283f55bbeb70..f364d01e9d93 100644
--- a/kernel/bpf/helpers.c
+++ b/kernel/bpf/helpers.c
@@ -1717,9 +1717,32 @@ static const struct btf_kfunc_id_set tracing_kfunc_set = {
 	.set   = &tracing_btf_ids,
 };
 
+void bpf_rcu_read_lock(void)
+{
+	rcu_read_lock();
+}
+
+void bpf_rcu_read_unlock(void)
+{
+	rcu_read_unlock();
+}
+
+BTF_SET8_START(generic_btf_ids)
+BTF_ID_FLAGS(func, bpf_rcu_read_lock, KF_RCU_LOCK)
+BTF_ID_FLAGS(func, bpf_rcu_read_unlock, KF_RCU_UNLOCK)
+BTF_SET8_END(generic_btf_ids)
+
+static const struct btf_kfunc_id_set generic_kfunc_set = {
+	.owner = THIS_MODULE,
+	.set   = &generic_btf_ids,
+};
+
 static int __init kfunc_init(void)
 {
-	return register_btf_kfunc_id_set(BPF_PROG_TYPE_TRACING, &tracing_kfunc_set);
+	int ret;
+
+	ret = register_btf_kfunc_id_set(BPF_PROG_TYPE_TRACING, &tracing_kfunc_set);
+	return ret ?: register_btf_kfunc_id_set(BPF_PROG_TYPE_UNSPEC, &generic_kfunc_set);
 }
 
 late_initcall(kfunc_init);
-- 
2.30.2

[PATCH bpf-next v2 5/8] bpf: Add bpf_rcu_read_lock() verifier support

[Yonghong Song]

To simplify the design and support the common practice, no
nested bpf_rcu_read_lock() is allowed. During verification,
each paired bpf_rcu_read_lock()/unlock() has a unique
region id, starting from 1. Each rcu ptr register also
remembers the region id when the ptr reg is initialized.
The following is a simple example to illustrate the
rcu lock regions and usage of rcu ptr's.

     ...                    <=== rcu lock region 0
     bpf_rcu_read_lock()    <=== rcu lock region 1
     rcu_ptr1 = ...         <=== rcu_ptr1 with region 1
     ... using rcu_ptr1 ...
     bpf_rcu_read_unlock()
     ...                    <=== rcu lock region -1
     bpf_rcu_read_lock()    <=== rcu lock region 2
     rcu_ptr2 = ...         <=== rcu_ptr2 with region 2
     ... using rcu_ptr2 ...
     ... using rcu_ptr1 ... <=== wrong, region 1 rcu_ptr in region 2
     bpf_rcu_read_unlock()

Outside the rcu lock region, the rcu lock region id is 0 or negative of
previous valid rcu lock region id, so the next valid rcu lock region
id can be easily computed.

Note that rcu protection is not needed for non-sleepable program. But
it is supported to make cross-sleepable/nonsleepable development easier.
For non-sleepable program, the following insns can be inside the rcu
lock region:
  - any non call insns except BPF_ABS/BPF_IND
  - non sleepable helpers or kfuncs
Also, bpf_*_storage_get() helper's 5th hidden argument (for memory
allocation flag) should be GFP_ATOMIC.

If a pointer (PTR_TO_BTF_ID) is marked as rcu, then any use of
this pointer and the load which gets this pointer needs to be
protected by bpf_rcu_read_lock(). The following shows a couple
of examples:
  struct task_struct {
        ...
        struct task_struct __rcu        *real_parent;
        struct css_set __rcu            *cgroups;
        ...
  };
  struct css_set {
        ...
        struct cgroup *dfl_cgrp;
        ...
  }
  ...
  task = bpf_get_current_task_btf();
  cgroups = task->cgroups;
  dfl_cgroup = cgroups->dfl_cgrp;
  ... using dfl_cgroup ...

The bpf_rcu_read_lock/unlock() should be added like below to
avoid verification failures.
  task = bpf_get_current_task_btf();
  bpf_rcu_read_lock();
  cgroups = task->cgroups;
  dfl_cgroup = cgroups->dfl_cgrp;
  bpf_rcu_read_unlock();
  ... using dfl_cgroup ...

The following is another example for task->real_parent.
  task = bpf_get_current_task_btf();
  bpf_rcu_read_lock();
  real_parent = task->real_parent;
  ... bpf_task_storage_get(&map, real_parent, 0, 0);
  bpf_rcu_read_unlock();

Signed-off-by: Yonghong Song <yhs@fb.com>
---
 include/linux/bpf.h          |  1 +
 include/linux/bpf_verifier.h |  7 +++
 kernel/bpf/btf.c             | 32 ++++++++++++-
 kernel/bpf/verifier.c        | 92 +++++++++++++++++++++++++++++++-----
 4 files changed, 120 insertions(+), 12 deletions(-)

diff --git a/include/linux/bpf.h b/include/linux/bpf.h
index b4bbcafd1c9b..98af0c9ec721 100644
--- a/include/linux/bpf.h
+++ b/include/linux/bpf.h
@@ -761,6 +761,7 @@ struct bpf_prog_ops {
 struct btf_struct_access_info {
 	u32 next_btf_id;
 	enum bpf_type_flag flag;
+	bool is_rcu;
 };
 
 struct bpf_verifier_ops {
diff --git a/include/linux/bpf_verifier.h b/include/linux/bpf_verifier.h
index 1a32baa78ce2..5d703637bb12 100644
--- a/include/linux/bpf_verifier.h
+++ b/include/linux/bpf_verifier.h
@@ -179,6 +179,10 @@ struct bpf_reg_state {
 	 */
 	s32 subreg_def;
 	enum bpf_reg_liveness live;
+	/* 0: not rcu ptr; > 0: rcu ptr, id of the rcu read lock region where
+	 * the rcu ptr reg is initialized.
+	 */
+	int active_rcu_lock;
 	/* if (!precise && SCALAR_VALUE) min/max/tnum don't affect safety */
 	bool precise;
 };
@@ -324,6 +328,8 @@ struct bpf_verifier_state {
 	u32 insn_idx;
 	u32 curframe;
 	u32 active_spin_lock;
+	/* <= 0: not in rcu read lock region; > 0: the rcu lock region id */
+	int active_rcu_lock;
 	bool speculative;
 
 	/* first and last insn idx of this verifier state */
@@ -424,6 +430,7 @@ struct bpf_insn_aux_data {
 	u32 seen; /* this insn was processed by the verifier at env->pass_cnt */
 	bool sanitize_stack_spill; /* subject to Spectre v4 sanitation */
 	bool zext_dst; /* this insn zero extends dst reg */
+	bool storage_get_func_atomic; /* bpf_*_storage_get() with atomic memory alloc */
 	u8 alu_state; /* used in combination with alu_limit */
 
 	/* below fields are initialized once */
diff --git a/kernel/bpf/btf.c b/kernel/bpf/btf.c
index d2ee1669a2f3..c5a9569f2ae0 100644
--- a/kernel/bpf/btf.c
+++ b/kernel/bpf/btf.c
@@ -5831,6 +5831,7 @@ static int btf_struct_walk(struct bpf_verifier_log *log, const struct btf *btf,
 		if (btf_type_is_ptr(mtype)) {
 			const struct btf_type *stype, *t;
 			enum bpf_type_flag tmp_flag = 0;
+			bool is_rcu = false;
 			u32 id;
 
 			if (msize != size || off != moff) {
@@ -5850,12 +5851,16 @@ static int btf_struct_walk(struct bpf_verifier_log *log, const struct btf *btf,
 				/* check __percpu tag */
 				if (strcmp(tag_value, "percpu") == 0)
 					tmp_flag = MEM_PERCPU;
+				/* check __rcu tag */
+				if (strcmp(tag_value, "rcu") == 0)
+					is_rcu = true;
 			}
 
 			stype = btf_type_skip_modifiers(btf, mtype->type, &id);
 			if (btf_type_is_struct(stype)) {
 				info->next_btf_id = id;
 				info->flag = tmp_flag;
+				info->is_rcu = is_rcu;
 				return WALK_PTR;
 			}
 		}
@@ -6317,7 +6322,7 @@ static int btf_check_func_arg_match(struct bpf_verifier_env *env,
 {
 	enum bpf_prog_type prog_type = resolve_prog_type(env->prog);
 	bool rel = false, kptr_get = false, trusted_args = false;
-	bool sleepable = false;
+	bool sleepable = false, rcu_lock = false, rcu_unlock = false;
 	struct bpf_verifier_log *log = &env->log;
 	u32 i, nargs, ref_id, ref_obj_id = 0;
 	bool is_kfunc = btf_is_kernel(btf);
@@ -6356,6 +6361,31 @@ static int btf_check_func_arg_match(struct bpf_verifier_env *env,
 		kptr_get = kfunc_meta->flags & KF_KPTR_GET;
 		trusted_args = kfunc_meta->flags & KF_TRUSTED_ARGS;
 		sleepable = kfunc_meta->flags & KF_SLEEPABLE;
+		rcu_lock = kfunc_meta->flags & KF_RCU_LOCK;
+		rcu_unlock = kfunc_meta->flags & KF_RCU_UNLOCK;
+	}
+
+	/* checking rcu read lock/unlock */
+	if (env->cur_state->active_rcu_lock > 0) {
+		if (rcu_lock) {
+			bpf_log(log, "nested rcu read lock (kernel function %s)\n", func_name);
+			return -EINVAL;
+		} else if (rcu_unlock) {
+			/* change active_rcu_lock to its corresponding negative value to
+			 * preserve the previous lock region id.
+			 */
+			env->cur_state->active_rcu_lock = -env->cur_state->active_rcu_lock;
+		} else if (sleepable) {
+			bpf_log(log, "kernel func %s is sleepable within rcu_read_lock region\n",
+				func_name);
+			return -EINVAL;
+		}
+	} else if (rcu_lock) {
+		/* a new lock region started, increase the region id. */
+		env->cur_state->active_rcu_lock = (-env->cur_state->active_rcu_lock) + 1;
+	} else if (rcu_unlock) {
+		bpf_log(log, "unmatched rcu read unlock (kernel function %s)\n", func_name);
+		return -EINVAL;
 	}
 
 	/* check that BTF function arguments match actual types that the
diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c
index 4d50f9568245..85151f2a655a 100644
--- a/kernel/bpf/verifier.c
+++ b/kernel/bpf/verifier.c
@@ -23,6 +23,7 @@
 #include <linux/error-injection.h>
 #include <linux/bpf_lsm.h>
 #include <linux/btf_ids.h>
+#include <linux/trace_events.h>
 #include <linux/poison.h>
 
 #include "disasm.h"
@@ -513,6 +514,14 @@ static bool is_callback_calling_function(enum bpf_func_id func_id)
 	       func_id == BPF_FUNC_user_ringbuf_drain;
 }
 
+static bool is_storage_get_function(enum bpf_func_id func_id)
+{
+	return func_id == BPF_FUNC_sk_storage_get ||
+	       func_id == BPF_FUNC_inode_storage_get ||
+	       func_id == BPF_FUNC_task_storage_get ||
+	       func_id == BPF_FUNC_cgrp_storage_get;
+}
+
 static bool helper_multiple_ref_obj_use(enum bpf_func_id func_id,
 					const struct bpf_map *map)
 {
@@ -1203,6 +1212,7 @@ static int copy_verifier_state(struct bpf_verifier_state *dst_state,
 	dst_state->speculative = src->speculative;
 	dst_state->curframe = src->curframe;
 	dst_state->active_spin_lock = src->active_spin_lock;
+	dst_state->active_rcu_lock = src->active_rcu_lock;
 	dst_state->branches = src->branches;
 	dst_state->parent = src->parent;
 	dst_state->first_insn_idx = src->first_insn_idx;
@@ -1687,6 +1697,7 @@ static void __mark_reg_unknown(const struct bpf_verifier_env *env,
 	reg->var_off = tnum_unknown;
 	reg->frameno = 0;
 	reg->precise = !env->bpf_capable;
+	reg->active_rcu_lock = 0;
 	__mark_reg_unbounded(reg);
 }
 
@@ -1727,7 +1738,7 @@ static void mark_btf_ld_reg(struct bpf_verifier_env *env,
 			    struct bpf_reg_state *regs, u32 regno,
 			    enum bpf_reg_type reg_type,
 			    struct btf *btf, u32 btf_id,
-			    enum bpf_type_flag flag)
+			    enum bpf_type_flag flag, bool set_rcu_lock)
 {
 	if (reg_type == SCALAR_VALUE) {
 		mark_reg_unknown(env, regs, regno);
@@ -1737,6 +1748,9 @@ static void mark_btf_ld_reg(struct bpf_verifier_env *env,
 	regs[regno].type = PTR_TO_BTF_ID | flag;
 	regs[regno].btf = btf;
 	regs[regno].btf_id = btf_id;
+	/* the reg rcu lock region id equals the current rcu lock region id */
+	if (set_rcu_lock)
+		regs[regno].active_rcu_lock = env->cur_state->active_rcu_lock;
 }
 
 #define DEF_NOT_SUBREG	(0)
@@ -3940,7 +3954,7 @@ static int check_map_kptr_access(struct bpf_verifier_env *env, u32 regno,
 		 * value from map as PTR_TO_BTF_ID, with the correct type.
 		 */
 		mark_btf_ld_reg(env, cur_regs(env), value_regno, PTR_TO_BTF_ID, kptr_field->kptr.btf,
-				kptr_field->kptr.btf_id, PTR_MAYBE_NULL | PTR_UNTRUSTED);
+				kptr_field->kptr.btf_id, PTR_MAYBE_NULL | PTR_UNTRUSTED, false);
 		/* For mark_ptr_or_null_reg */
 		val_reg->id = ++env->id_gen;
 	} else if (class == BPF_STX) {
@@ -4681,6 +4695,18 @@ static int check_ptr_to_btf_access(struct bpf_verifier_env *env,
 		return -EACCES;
 	}
 
+	/* If reg valid rcu region id does not equal to the current rcu region id,
+	 * rcu access is not protected properly, either out of a valid rcu region,
+	 * or in a different rcu region.
+	 */
+	if (env->prog->aux->sleepable && reg->active_rcu_lock &&
+	    reg->active_rcu_lock != env->cur_state->active_rcu_lock) {
+		verbose(env,
+			"R%d is ptr_%s access rcu-protected memory with off=%d, not rcu protected\n",
+			regno, tname, off);
+		return -EACCES;
+	}
+
 	if (env->ops->btf_struct_access) {
 		ret = env->ops->btf_struct_access(&env->log, reg->btf, t,
 						  off, size, atype, &info);
@@ -4697,6 +4723,16 @@ static int check_ptr_to_btf_access(struct bpf_verifier_env *env,
 	if (ret < 0)
 		return ret;
 
+	/* The value is a rcu pointer. For a sleepable program, the load needs to be
+	 * in a rcu lock region, similar to rcu_dereference().
+	 */
+	if (info.is_rcu && env->prog->aux->sleepable && env->cur_state->active_rcu_lock <= 0) {
+		verbose(env,
+			"R%d is rcu dereference ptr_%s with off=%d, not in rcu_read_lock region\n",
+			regno, tname, off);
+		return -EACCES;
+	}
+
 	/* If this is an untrusted pointer, all pointers formed by walking it
 	 * also inherit the untrusted flag.
 	 */
@@ -4705,7 +4741,7 @@ static int check_ptr_to_btf_access(struct bpf_verifier_env *env,
 
 	if (atype == BPF_READ && value_regno >= 0)
 		mark_btf_ld_reg(env, regs, value_regno, ret, reg->btf, info.next_btf_id,
-				info.flag);
+				info.flag, info.is_rcu && env->prog->aux->sleepable);
 
 	return 0;
 }
@@ -4761,7 +4797,7 @@ static int check_ptr_to_map_access(struct bpf_verifier_env *env,
 
 	if (value_regno >= 0)
 		mark_btf_ld_reg(env, regs, value_regno, ret, btf_vmlinux, info.next_btf_id,
-				info.flag);
+				info.flag, info.is_rcu && env->prog->aux->sleepable);
 
 	return 0;
 }
@@ -5874,6 +5910,17 @@ static int check_reg_type(struct bpf_verifier_env *env, u32 regno,
 	if (arg_type & PTR_MAYBE_NULL)
 		type &= ~PTR_MAYBE_NULL;
 
+	/* If a rcu pointer is a helper argument, the helper should be protected in
+	 * the same rcu lock region where the rcu pointer reg is initialized.
+	 */
+	if (env->prog->aux->sleepable && reg->active_rcu_lock &&
+	    reg->active_rcu_lock != env->cur_state->active_rcu_lock) {
+		verbose(env,
+			"R%d is arg type %s needs rcu protection\n",
+			regno, reg_type_str(env, reg->type));
+		return -EACCES;
+	}
+
 	for (i = 0; i < ARRAY_SIZE(compatible->types); i++) {
 		expected = compatible->types[i];
 		if (expected == NOT_INIT)
@@ -7418,6 +7465,18 @@ static int check_helper_call(struct bpf_verifier_env *env, struct bpf_insn *insn
 		return err;
 	}
 
+	if (env->cur_state->active_rcu_lock > 0) {
+		if (bpf_lsm_sleepable_func_proto(func_id) ||
+		    bpf_tracing_sleepable_func_proto(func_id)) {
+			verbose(env, "sleepable helper %s#%din rcu_read_lock region\n",
+				func_id_name(func_id), func_id);
+			return -EINVAL;
+		}
+
+		if (env->prog->aux->sleepable && is_storage_get_function(func_id))
+			env->insn_aux_data[insn_idx].storage_get_func_atomic = true;
+	}
+
 	meta.func_id = func_id;
 	/* check args */
 	for (i = 0; i < MAX_BPF_FUNC_REG_ARGS; i++) {
@@ -10605,6 +10664,11 @@ static int check_ld_abs(struct bpf_verifier_env *env, struct bpf_insn *insn)
 		return -EINVAL;
 	}
 
+	if (env->prog->aux->sleepable && env->cur_state->active_rcu_lock > 0) {
+		verbose(env, "BPF_LD_[ABS|IND] cannot be used inside bpf_rcu_read_lock-ed region\n");
+		return -EINVAL;
+	}
+
 	if (regs[ctx_reg].type != PTR_TO_CTX) {
 		verbose(env,
 			"at the time of BPF_LD_ABS|IND R6 != pointer to skb\n");
@@ -11869,6 +11933,9 @@ static bool states_equal(struct bpf_verifier_env *env,
 	if (old->active_spin_lock != cur->active_spin_lock)
 		return false;
 
+	if (old->active_rcu_lock != cur->active_rcu_lock)
+		return false;
+
 	/* for states to be equal callsites have to be the same
 	 * and all frame states need to be equivalent
 	 */
@@ -12553,6 +12620,11 @@ static int do_check(struct bpf_verifier_env *env)
 					return -EINVAL;
 				}
 
+				if (env->cur_state->active_rcu_lock > 0) {
+					verbose(env, "bpf_rcu_read_unlock is missing\n");
+					return -EINVAL;
+				}
+
 				/* We must do check_reference_leak here before
 				 * prepare_func_exit to handle the case when
 				 * state->curframe > 0, it may be a callback
@@ -14289,14 +14361,12 @@ static int do_misc_fixups(struct bpf_verifier_env *env)
 			goto patch_call_imm;
 		}
 
-		if (insn->imm == BPF_FUNC_task_storage_get ||
-		    insn->imm == BPF_FUNC_sk_storage_get ||
-		    insn->imm == BPF_FUNC_inode_storage_get ||
-		    insn->imm == BPF_FUNC_cgrp_storage_get) {
-			if (env->prog->aux->sleepable)
-				insn_buf[0] = BPF_MOV64_IMM(BPF_REG_5, (__force __s32)GFP_KERNEL);
-			else
+		if (is_storage_get_function(insn->imm)) {
+			if (!env->prog->aux->sleepable ||
+			    env->insn_aux_data[i + delta].storage_get_func_atomic)
 				insn_buf[0] = BPF_MOV64_IMM(BPF_REG_5, (__force __s32)GFP_ATOMIC);
+			else
+				insn_buf[0] = BPF_MOV64_IMM(BPF_REG_5, (__force __s32)GFP_KERNEL);
 			insn_buf[1] = *insn;
 			cnt = 2;
 
-- 
2.30.2

[PATCH bpf-next v2 6/8] bpf: Enable sleeptable support for cgrp local storage

[Yonghong Song]

With proper bpf_rcu_read_lock() support, sleepable support for cgrp local
storage can be enabled as typical use case task->cgroups->dfl_cgrp
can be protected with bpf_rcu_read_lock().

Signed-off-by: Yonghong Song <yhs@fb.com>
---
 kernel/bpf/verifier.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c
index 85151f2a655a..5709eda21afd 100644
--- a/kernel/bpf/verifier.c
+++ b/kernel/bpf/verifier.c
@@ -12927,10 +12927,11 @@ static int check_map_prog_compatibility(struct bpf_verifier_env *env,
 		case BPF_MAP_TYPE_INODE_STORAGE:
 		case BPF_MAP_TYPE_SK_STORAGE:
 		case BPF_MAP_TYPE_TASK_STORAGE:
+		case BPF_MAP_TYPE_CGRP_STORAGE:
 			break;
 		default:
 			verbose(env,
-				"Sleepable programs can only use array, hash, and ringbuf maps\n");
+				"Sleepable programs can only use array, hash, ringbuf and local storage maps\n");
 			return -EINVAL;
 		}
 
-- 
2.30.2

[PATCH bpf-next v2 7/8] selftests/bpf: Add tests for bpf_rcu_read_lock()

[Yonghong Song]

Add a few positive/negative tests to test bpf_rcu_read_lock()
and its corresponding verifier support.

Signed-off-by: Yonghong Song <yhs@fb.com>
---
 .../selftests/bpf/prog_tests/rcu_read_lock.c  | 127 +++++++
 .../selftests/bpf/progs/rcu_read_lock.c       | 353 ++++++++++++++++++
 2 files changed, 480 insertions(+)
 create mode 100644 tools/testing/selftests/bpf/prog_tests/rcu_read_lock.c
 create mode 100644 tools/testing/selftests/bpf/progs/rcu_read_lock.c

diff --git a/tools/testing/selftests/bpf/prog_tests/rcu_read_lock.c b/tools/testing/selftests/bpf/prog_tests/rcu_read_lock.c
new file mode 100644
index 000000000000..4cf1a5188c34
--- /dev/null
+++ b/tools/testing/selftests/bpf/prog_tests/rcu_read_lock.c
@@ -0,0 +1,127 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2022 Meta Platforms, Inc. and affiliates.*/
+
+#define _GNU_SOURCE
+#include <unistd.h>
+#include <sys/syscall.h>
+#include <sys/types.h>
+#include <test_progs.h>
+#include "rcu_read_lock.skel.h"
+
+static void test_local_storage(void)
+{
+	struct rcu_read_lock *skel;
+	int err;
+
+	skel = rcu_read_lock__open();
+	if (!ASSERT_OK_PTR(skel, "skel_open"))
+		return;
+
+	skel->bss->target_pid = syscall(SYS_gettid);
+
+	bpf_program__set_autoload(skel->progs.cgrp_succ, true);
+	bpf_program__set_autoload(skel->progs.task_succ, true);
+	bpf_program__set_autoload(skel->progs.two_regions, true);
+	bpf_program__set_autoload(skel->progs.non_sleepable_1, true);
+	bpf_program__set_autoload(skel->progs.non_sleepable_2, true);
+	err = rcu_read_lock__load(skel);
+	if (!ASSERT_OK(err, "skel_load"))
+		goto done;
+
+	err = rcu_read_lock__attach(skel);
+	if (!ASSERT_OK(err, "skel_attach"))
+		goto done;
+
+	syscall(SYS_getpgid);
+
+	ASSERT_EQ(skel->bss->result, 2, "result");
+done:
+	rcu_read_lock__destroy(skel);
+}
+
+static void test_runtime_diff_rcu_tag(void)
+{
+	struct rcu_read_lock *skel;
+	int err;
+
+	skel = rcu_read_lock__open();
+	if (!ASSERT_OK_PTR(skel, "skel_open"))
+		return;
+
+	bpf_program__set_autoload(skel->progs.dump_ipv6_route, true);
+	err = rcu_read_lock__load(skel);
+	ASSERT_OK(err, "skel_load");
+	rcu_read_lock__destroy(skel);
+}
+
+static void test_negative(void)
+{
+#define NUM_FAILED_PROGS	10
+	struct rcu_read_lock *skel;
+	struct bpf_program *prog;
+	int i, err;
+
+	for (i = 0; i < NUM_FAILED_PROGS; i++) {
+		skel = rcu_read_lock__open();
+		if (!ASSERT_OK_PTR(skel, "skel_open"))
+			return;
+
+		switch (i) {
+		case 0:
+			prog = skel->progs.miss_lock;
+			break;
+		case 1:
+			prog = skel->progs.miss_unlock;
+			break;
+		case 2:
+			prog = skel->progs.cgrp_incorrect_rcu_region;
+			break;
+		case 3:
+			prog = skel->progs.task_incorrect_rcu_region1;
+			break;
+		case 4:
+			prog = skel->progs.task_incorrect_rcu_region2;
+			break;
+		case 5:
+			prog = skel->progs.non_sleepable_rcu_mismatch;
+			break;
+		case 6:
+			prog = skel->progs.inproper_sleepable_helper;
+			break;
+		case 7:
+			prog = skel->progs.inproper_sleepable_kfunc;
+			break;
+		case 8:
+			prog = skel->progs.nested_rcu_region;
+			break;
+		default:
+			prog = skel->progs.cross_rcu_region;
+			break;
+		}
+
+		bpf_program__set_autoload(prog, true);
+		err = rcu_read_lock__load(skel);
+		if (!ASSERT_ERR(err, "skel_load")) {
+			rcu_read_lock__destroy(skel);
+			return;
+		}
+	}
+}
+
+void test_rcu_read_lock(void)
+{
+	int cgroup_fd;
+
+	cgroup_fd = test__join_cgroup("/rcu_read_lock");
+	if (!ASSERT_GE(cgroup_fd, 0, "join_cgroup /rcu_read_lock"))
+		return;
+
+	if (test__start_subtest("local_storage"))
+		test_local_storage();
+	if (test__start_subtest("runtime_diff_rcu_tag"))
+		test_runtime_diff_rcu_tag();
+	if (test__start_subtest("negative_tests"))
+		test_negative();
+
+	close(cgroup_fd);
+}
diff --git a/tools/testing/selftests/bpf/progs/rcu_read_lock.c b/tools/testing/selftests/bpf/progs/rcu_read_lock.c
new file mode 100644
index 000000000000..fbd1aeedc14c
--- /dev/null
+++ b/tools/testing/selftests/bpf/progs/rcu_read_lock.c
@@ -0,0 +1,353 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2022 Meta Platforms, Inc. and affiliates. */
+
+#include "vmlinux.h"
+#include <bpf/bpf_helpers.h>
+#include <bpf/bpf_tracing.h>
+#include "bpf_tracing_net.h"
+#include "bpf_misc.h"
+
+char _license[] SEC("license") = "GPL";
+
+struct {
+	__uint(type, BPF_MAP_TYPE_CGRP_STORAGE);
+	__uint(map_flags, BPF_F_NO_PREALLOC);
+	__type(key, int);
+	__type(value, long);
+} map_a SEC(".maps");
+
+struct {
+	__uint(type, BPF_MAP_TYPE_TASK_STORAGE);
+	__uint(map_flags, BPF_F_NO_PREALLOC);
+	__type(key, int);
+	__type(value, long);
+} map_b SEC(".maps");
+
+__u32 user_data, key_serial, target_pid = 0;
+__u64 flags, result = 0;
+
+struct bpf_key *bpf_lookup_user_key(__u32 serial, __u64 flags) __ksym;
+void bpf_key_put(struct bpf_key *key) __ksym;
+void bpf_rcu_read_lock(void) __ksym;
+void bpf_rcu_read_unlock(void) __ksym;
+
+SEC("?fentry.s/" SYS_PREFIX "sys_getpgid")
+int cgrp_succ(void *ctx)
+{
+	struct task_struct *task;
+	struct css_set *cgroups;
+	struct cgroup *dfl_cgrp;
+	long init_val = 2;
+	long *ptr;
+
+	task = bpf_get_current_task_btf();
+	if (task->pid != target_pid)
+		return 0;
+
+	bpf_rcu_read_lock();
+	cgroups = task->cgroups;
+	dfl_cgrp = cgroups->dfl_cgrp;
+	bpf_rcu_read_unlock();
+	ptr = bpf_cgrp_storage_get(&map_a, dfl_cgrp, &init_val,
+				   BPF_LOCAL_STORAGE_GET_F_CREATE);
+	if (!ptr)
+		return 0;
+	ptr = bpf_cgrp_storage_get(&map_a, dfl_cgrp, 0, 0);
+	if (!ptr)
+		return 0;
+	result = *ptr;
+	return 0;
+}
+
+SEC("?fentry.s/" SYS_PREFIX "sys_nanosleep")
+int task_succ(void *ctx)
+{
+	struct task_struct *task, *real_parent;
+
+	task = bpf_get_current_task_btf();
+	if (task->pid != target_pid)
+		return 0;
+
+	/* region including helper using rcu ptr */
+	bpf_rcu_read_lock();
+	real_parent = task->real_parent;
+	(void)bpf_task_storage_get(&map_b, real_parent, 0,
+				   BPF_LOCAL_STORAGE_GET_F_CREATE);
+	bpf_rcu_read_unlock();
+	return 0;
+}
+
+SEC("?fentry.s/" SYS_PREFIX "sys_nanosleep")
+int two_regions(void *ctx)
+{
+	struct task_struct *task, *real_parent;
+
+	/* two regions */
+	task = bpf_get_current_task_btf();
+	bpf_rcu_read_lock();
+	bpf_rcu_read_unlock();
+	bpf_rcu_read_lock();
+	real_parent = task->real_parent;
+	(void)bpf_task_storage_get(&map_b, real_parent, 0,
+				   BPF_LOCAL_STORAGE_GET_F_CREATE);
+	bpf_rcu_read_unlock();
+	return 0;
+}
+
+SEC("?fentry/" SYS_PREFIX "sys_getpgid")
+int non_sleepable_1(void *ctx)
+{
+	struct task_struct *task, *real_parent;
+
+	task = bpf_get_current_task_btf();
+
+	bpf_rcu_read_lock();
+	real_parent = task->real_parent;
+	(void)bpf_task_storage_get(&map_b, real_parent, 0,
+				   BPF_LOCAL_STORAGE_GET_F_CREATE);
+	bpf_rcu_read_unlock();
+	return 0;
+}
+
+SEC("?fentry/" SYS_PREFIX "sys_getpgid")
+int non_sleepable_2(void *ctx)
+{
+	struct task_struct *task, *real_parent;
+
+	task = bpf_get_current_task_btf();
+
+	bpf_rcu_read_lock();
+	real_parent = task->real_parent;
+	bpf_rcu_read_unlock();
+	(void)bpf_task_storage_get(&map_b, real_parent, 0,
+				   BPF_LOCAL_STORAGE_GET_F_CREATE);
+	return 0;
+}
+
+SEC("?iter.s/ipv6_route")
+int dump_ipv6_route(struct bpf_iter__ipv6_route *ctx)
+{
+	struct seq_file *seq = ctx->meta->seq;
+	struct fib6_info *rt = ctx->rt;
+	const struct net_device *dev;
+	struct fib6_nh *fib6_nh;
+	unsigned int flags;
+	struct nexthop *nh;
+
+	if (rt == (void *)0)
+		return 0;
+
+	/* fib6_nh is not a rcu ptr */
+	fib6_nh = &rt->fib6_nh[0];
+	flags = rt->fib6_flags;
+
+	nh = rt->nh;
+	bpf_rcu_read_lock();
+	if (rt->nh)
+		/* fib6_nh is a rcu ptr */
+		fib6_nh = &nh->nh_info->fib6_nh;
+
+	/* fib6_nh could be a rcu or non-rcu ptr */
+	if (fib6_nh->fib_nh_gw_family) {
+		flags |= RTF_GATEWAY;
+		BPF_SEQ_PRINTF(seq, "%pi6 ", &fib6_nh->fib_nh_gw6);
+	} else {
+		BPF_SEQ_PRINTF(seq, "00000000000000000000000000000000 ");
+	}
+
+	dev = fib6_nh->fib_nh_dev;
+	bpf_rcu_read_unlock();
+	if (dev)
+		BPF_SEQ_PRINTF(seq, "%08x %08x %08x %08x %8s\n", rt->fib6_metric,
+			       rt->fib6_ref.refs.counter, 0, flags, dev->name);
+	else
+		BPF_SEQ_PRINTF(seq, "%08x %08x %08x %08x\n", rt->fib6_metric,
+			       rt->fib6_ref.refs.counter, 0, flags);
+
+	return 0;
+}
+
+SEC("?fentry.s/" SYS_PREFIX "sys_getpgid")
+int miss_lock(void *ctx)
+{
+	struct task_struct *task;
+	struct css_set *cgroups;
+	struct cgroup *dfl_cgrp;
+
+	/* missing bpf_rcu_read_lock() */
+	task = bpf_get_current_task_btf();
+	bpf_rcu_read_lock();
+	cgroups = task->cgroups;
+	bpf_rcu_read_unlock();
+	dfl_cgrp = cgroups->dfl_cgrp;
+	bpf_rcu_read_unlock();
+	(void)bpf_cgrp_storage_get(&map_a, dfl_cgrp, 0,
+				   BPF_LOCAL_STORAGE_GET_F_CREATE);
+	return 0;
+}
+
+SEC("?fentry.s/" SYS_PREFIX "sys_getpgid")
+int miss_unlock(void *ctx)
+{
+	struct task_struct *task;
+	struct css_set *cgroups;
+	struct cgroup *dfl_cgrp;
+
+	/* missing bpf_rcu_read_unlock() */
+	bpf_rcu_read_lock();
+	task = bpf_get_current_task_btf();
+	bpf_rcu_read_lock();
+	cgroups = task->cgroups;
+	bpf_rcu_read_unlock();
+	dfl_cgrp = cgroups->dfl_cgrp;
+	(void)bpf_cgrp_storage_get(&map_a, dfl_cgrp, 0,
+				   BPF_LOCAL_STORAGE_GET_F_CREATE);
+	return 0;
+}
+
+SEC("?fentry.s/" SYS_PREFIX "sys_getpgid")
+int cgrp_incorrect_rcu_region(void *ctx)
+{
+	struct task_struct *task;
+	struct css_set *cgroups;
+	struct cgroup *dfl_cgrp;
+
+	/* load with rcu_ptr outside the rcu read lock region */
+	bpf_rcu_read_lock();
+	task = bpf_get_current_task_btf();
+	cgroups = task->cgroups;
+	bpf_rcu_read_unlock();
+	dfl_cgrp = cgroups->dfl_cgrp;
+	(void)bpf_cgrp_storage_get(&map_a, dfl_cgrp, 0,
+				   BPF_LOCAL_STORAGE_GET_F_CREATE);
+	return 0;
+}
+
+SEC("?fentry.s/" SYS_PREFIX "sys_getpgid")
+int task_incorrect_rcu_region1(void *ctx)
+{
+	struct task_struct *task, *real_parent;
+
+	task = bpf_get_current_task_btf();
+
+	/* helper use of rcu ptr outside the rcu read lock region */
+	bpf_rcu_read_lock();
+	real_parent = task->real_parent;
+	bpf_rcu_read_unlock();
+	(void)bpf_task_storage_get(&map_b, real_parent, 0,
+				   BPF_LOCAL_STORAGE_GET_F_CREATE);
+	return 0;
+}
+
+SEC("?fentry.s/" SYS_PREFIX "sys_getpgid")
+int task_incorrect_rcu_region2(void *ctx)
+{
+	struct task_struct *task, *real_parent;
+
+	task = bpf_get_current_task_btf();
+
+	/* missing bpf_rcu_read_unlock() in one path */
+	bpf_rcu_read_lock();
+	real_parent = task->real_parent;
+	(void)bpf_task_storage_get(&map_b, real_parent, 0,
+				   BPF_LOCAL_STORAGE_GET_F_CREATE);
+	if (real_parent)
+		bpf_rcu_read_unlock();
+	return 0;
+}
+
+SEC("?fentry/" SYS_PREFIX "sys_getpgid")
+int non_sleepable_rcu_mismatch(void *ctx)
+{
+	struct task_struct *task, *real_parent;
+
+	task = bpf_get_current_task_btf();
+
+	/* non-sleepable: missing bpf_rcu_read_unlock() in one path */
+	bpf_rcu_read_lock();
+	real_parent = task->real_parent;
+	(void)bpf_task_storage_get(&map_b, real_parent, 0,
+				   BPF_LOCAL_STORAGE_GET_F_CREATE);
+	if (real_parent)
+		bpf_rcu_read_unlock();
+	return 0;
+}
+
+SEC("?fentry.s/" SYS_PREFIX "sys_getpgid")
+int inproper_sleepable_helper(void *ctx)
+{
+	struct task_struct *task, *real_parent;
+	struct pt_regs *regs;
+	__u32 value = 0;
+	void *ptr;
+
+	task = bpf_get_current_task_btf();
+
+	/* sleepable helper in rcu read lock region */
+	bpf_rcu_read_lock();
+	real_parent = task->real_parent;
+	regs = (struct pt_regs *)bpf_task_pt_regs(real_parent);
+	if (!regs) {
+		bpf_rcu_read_unlock();
+		return 0;
+	}
+
+	ptr = (void *)PT_REGS_IP(regs);
+	(void)bpf_copy_from_user_task(&value, sizeof(uint32_t), ptr, task, 0);
+	user_data = value;
+	(void)bpf_task_storage_get(&map_b, real_parent, 0,
+				   BPF_LOCAL_STORAGE_GET_F_CREATE);
+	bpf_rcu_read_unlock();
+	return 0;
+}
+
+SEC("?lsm.s/bpf")
+int BPF_PROG(inproper_sleepable_kfunc, int cmd, union bpf_attr *attr, unsigned int size)
+{
+	struct bpf_key *bkey;
+
+	/* sleepable kfunc in rcu read lock region */
+	bpf_rcu_read_lock();
+	bkey = bpf_lookup_user_key(key_serial, flags);
+	bpf_rcu_read_unlock();
+	if (!bkey)
+		return -1;
+	bpf_key_put(bkey);
+
+	return 0;
+}
+
+SEC("?fentry.s/" SYS_PREFIX "sys_nanosleep")
+int nested_rcu_region(void *ctx)
+{
+	struct task_struct *task, *real_parent;
+
+	/* nested rcu read lock regions */
+	task = bpf_get_current_task_btf();
+	bpf_rcu_read_lock();
+	bpf_rcu_read_lock();
+	real_parent = task->real_parent;
+	(void)bpf_task_storage_get(&map_b, real_parent, 0,
+				   BPF_LOCAL_STORAGE_GET_F_CREATE);
+	bpf_rcu_read_unlock();
+	bpf_rcu_read_unlock();
+	return 0;
+}
+
+SEC("?fentry.s/" SYS_PREFIX "sys_nanosleep")
+int cross_rcu_region(void *ctx)
+{
+	struct task_struct *task, *real_parent;
+
+	/* rcu ptr define/use in different regions */
+	task = bpf_get_current_task_btf();
+	bpf_rcu_read_lock();
+	real_parent = task->real_parent;
+	bpf_rcu_read_unlock();
+	bpf_rcu_read_lock();
+	(void)bpf_task_storage_get(&map_b, real_parent, 0,
+				   BPF_LOCAL_STORAGE_GET_F_CREATE);
+	bpf_rcu_read_unlock();
+	return 0;
+}
+
-- 
2.30.2

[PATCH bpf-next v2 8/8] selftests/bpf: Add rcu_read_lock test to s390x deny list

[Yonghong Song]

The new rcu_read_lock test will fail on s390x with the following error message:

  ...
  test_rcu_read_lock:PASS:join_cgroup /rcu_read_lock 0 nsec
  test_local_storage:PASS:skel_open 0 nsec
  libbpf: prog 'cgrp_succ': failed to find kernel BTF type ID of '__s390x_sys_getpgid': -3
  libbpf: prog 'cgrp_succ': failed to prepare load attributes: -3
  libbpf: prog 'cgrp_succ': failed to load: -3
  libbpf: failed to load object 'rcu_read_lock'
  libbpf: failed to load BPF skeleton 'rcu_read_lock': -3
  test_local_storage:FAIL:skel_load unexpected error: -3 (errno 3)
  ...

So add it to the s390x deny list.

Signed-off-by: Yonghong Song <yhs@fb.com>
---
 tools/testing/selftests/bpf/DENYLIST.s390x | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/testing/selftests/bpf/DENYLIST.s390x b/tools/testing/selftests/bpf/DENYLIST.s390x
index be4e3d47ea3e..dd5db40b5a09 100644
--- a/tools/testing/selftests/bpf/DENYLIST.s390x
+++ b/tools/testing/selftests/bpf/DENYLIST.s390x
@@ -41,6 +41,7 @@ module_attach                            # skel_attach skeleton attach failed: -
 mptcp
 netcnt                                   # failed to load BPF skeleton 'netcnt_prog': -7                               (?)
 probe_user                               # check_kprobe_res wrong kprobe res from probe read                           (?)
+rcu_read_lock                            # failed to find kernel BTF type ID of '__x64_sys_getpgid': -3                (?)
 recursion                                # skel_attach unexpected error: -524                                          (trampoline)
 ringbuf                                  # skel_load skeleton load failed                                              (?)
 select_reuseport                         # intermittently fails on new s390x setup
-- 
2.30.2

Re: [PATCH bpf-next v2 3/8] bpf: Abstract out functions to check sleepable helpers

[kernel test robot]

[-- Attachment #1: Type: text/plain, Size: 8919 bytes --]

Hi Yonghong,

I love your patch! Perhaps something to improve:

[auto build test WARNING on bpf-next/master]

url:    https://github.com/intel-lab-lkp/linux/commits/Yonghong-Song/bpf-Add-bpf_rcu_read_lock-support/20221108-155529
base:   https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master
patch link:    https://lore.kernel.org/r/20221108074104.263145-1-yhs%40fb.com
patch subject: [PATCH bpf-next v2 3/8] bpf: Abstract out functions to check sleepable helpers
config: arm-neponset_defconfig
compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 463da45892e2d2a262277b91b96f5f8c05dc25d0)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # install arm cross compiling tool for clang build
        # apt-get install binutils-arm-linux-gnueabi
        # https://github.com/intel-lab-lkp/linux/commit/97528bc3a813d7e2b950063b7a1912672bcae1e7
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Yonghong-Song/bpf-Add-bpf_rcu_read_lock-support/20221108-155529
        git checkout 97528bc3a813d7e2b950063b7a1912672bcae1e7
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash arch/arm/kernel/ fs/ ipc/ kernel/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

   In file included from fs/statfs.c:2:
   In file included from include/linux/syscalls.h:88:
   In file included from include/trace/syscall.h:7:
   include/linux/trace_events.h:801:51: error: variable has incomplete type 'enum bpf_func_id'
   bpf_tracing_sleepable_func_proto(enum bpf_func_id func_id)
                                                     ^
   include/linux/trace_events.h:20:6: note: forward declaration of 'enum bpf_func_id'
   enum bpf_func_id;
        ^
>> fs/statfs.c:131:3: warning: 'memcpy' will always overflow; destination buffer has size 64, but size argument is 88 [-Wfortify-source]
                   memcpy(&buf, st, sizeof(*st));
                   ^
   fs/statfs.c:172:3: warning: 'memcpy' will always overflow; destination buffer has size 84, but size argument is 88 [-Wfortify-source]
                   memcpy(&buf, st, sizeof(*st));
                   ^
   2 warnings and 1 error generated.
--
   In file included from fs/aio.c:20:
   In file included from include/linux/syscalls.h:88:
   In file included from include/trace/syscall.h:7:
   include/linux/trace_events.h:801:51: error: variable has incomplete type 'enum bpf_func_id'
   bpf_tracing_sleepable_func_proto(enum bpf_func_id func_id)
                                                     ^
   include/linux/trace_events.h:20:6: note: forward declaration of 'enum bpf_func_id'
   enum bpf_func_id;
        ^
   In file included from fs/aio.c:29:
>> include/linux/mman.h:154:9: warning: division by zero is undefined [-Wdivision-by-zero]
                  _calc_vm_trans(flags, MAP_SYNC,       VM_SYNC      ) |
                  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/mman.h:132:21: note: expanded from macro '_calc_vm_trans'
      : ((x) & (bit1)) / ((bit1) / (bit2))))
                       ^ ~~~~~~~~~~~~~~~~~
   1 warning and 1 error generated.
--
   In file included from ipc/msg.c:35:
   In file included from include/linux/syscalls.h:88:
   In file included from include/trace/syscall.h:7:
   include/linux/trace_events.h:801:51: error: variable has incomplete type 'enum bpf_func_id'
   bpf_tracing_sleepable_func_proto(enum bpf_func_id func_id)
                                                     ^
   include/linux/trace_events.h:20:6: note: forward declaration of 'enum bpf_func_id'
   enum bpf_func_id;
        ^
>> ipc/msg.c:497:20: warning: implicit conversion from 'int' to 'unsigned short' changes value from 32768000 to 0 [-Wconstant-conversion]
           msginfo->msgseg = MSGSEG;
                           ~ ^~~~~~
   include/uapi/linux/msg.h:87:38: note: expanded from macro 'MSGSEG'
   #define MSGSEG (__MSGSEG <= 0xffff ? __MSGSEG : 0xffff)
                                        ^~~~~~~~
   include/uapi/linux/msg.h:86:36: note: expanded from macro '__MSGSEG'
   #define __MSGSEG ((MSGPOOL * 1024) / MSGSSZ) /* max no. of segments */
                     ~~~~~~~~~~~~~~~~~^~~~~~~~
   1 warning and 1 error generated.
--
   In file included from arch/arm/kernel/sys_arm.c:20:
   In file included from include/linux/syscalls.h:88:
   In file included from include/trace/syscall.h:7:
   include/linux/trace_events.h:801:51: error: variable has incomplete type 'enum bpf_func_id'
   bpf_tracing_sleepable_func_proto(enum bpf_func_id func_id)
                                                     ^
   include/linux/trace_events.h:20:6: note: forward declaration of 'enum bpf_func_id'
   enum bpf_func_id;
        ^
   In file included from arch/arm/kernel/sys_arm.c:21:
>> include/linux/mman.h:154:9: warning: division by zero is undefined [-Wdivision-by-zero]
                  _calc_vm_trans(flags, MAP_SYNC,       VM_SYNC      ) |
                  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/mman.h:132:21: note: expanded from macro '_calc_vm_trans'
      : ((x) & (bit1)) / ((bit1) / (bit2))))
                       ^ ~~~~~~~~~~~~~~~~~
   arch/arm/kernel/sys_arm.c:32:17: warning: no previous prototype for function 'sys_arm_fadvise64_64' [-Wmissing-prototypes]
   asmlinkage long sys_arm_fadvise64_64(int fd, int advice,
                   ^
   arch/arm/kernel/sys_arm.c:32:12: note: declare 'static' if the function is not intended to be used outside of this translation unit
   asmlinkage long sys_arm_fadvise64_64(int fd, int advice,
              ^
              static 
   2 warnings and 1 error generated.


vim +/memcpy +131 fs/statfs.c

c8b91accfa1059 Al Viro 2011-03-12  125  
c8b91accfa1059 Al Viro 2011-03-12  126  static int do_statfs_native(struct kstatfs *st, struct statfs __user *p)
c8b91accfa1059 Al Viro 2011-03-12  127  {
c8b91accfa1059 Al Viro 2011-03-12  128  	struct statfs buf;
7ed1ee6118ae77 Al Viro 2010-03-23  129  
c8b91accfa1059 Al Viro 2011-03-12  130  	if (sizeof(buf) == sizeof(*st))
c8b91accfa1059 Al Viro 2011-03-12 @131  		memcpy(&buf, st, sizeof(*st));
7ed1ee6118ae77 Al Viro 2010-03-23  132  	else {
c8b91accfa1059 Al Viro 2011-03-12  133  		if (sizeof buf.f_blocks == 4) {
c8b91accfa1059 Al Viro 2011-03-12  134  			if ((st->f_blocks | st->f_bfree | st->f_bavail |
c8b91accfa1059 Al Viro 2011-03-12  135  			     st->f_bsize | st->f_frsize) &
7ed1ee6118ae77 Al Viro 2010-03-23  136  			    0xffffffff00000000ULL)
7ed1ee6118ae77 Al Viro 2010-03-23  137  				return -EOVERFLOW;
7ed1ee6118ae77 Al Viro 2010-03-23  138  			/*
7ed1ee6118ae77 Al Viro 2010-03-23  139  			 * f_files and f_ffree may be -1; it's okay to stuff
7ed1ee6118ae77 Al Viro 2010-03-23  140  			 * that into 32 bits
7ed1ee6118ae77 Al Viro 2010-03-23  141  			 */
c8b91accfa1059 Al Viro 2011-03-12  142  			if (st->f_files != -1 &&
c8b91accfa1059 Al Viro 2011-03-12  143  			    (st->f_files & 0xffffffff00000000ULL))
7ed1ee6118ae77 Al Viro 2010-03-23  144  				return -EOVERFLOW;
c8b91accfa1059 Al Viro 2011-03-12  145  			if (st->f_ffree != -1 &&
c8b91accfa1059 Al Viro 2011-03-12  146  			    (st->f_ffree & 0xffffffff00000000ULL))
7ed1ee6118ae77 Al Viro 2010-03-23  147  				return -EOVERFLOW;
7ed1ee6118ae77 Al Viro 2010-03-23  148  		}
7ed1ee6118ae77 Al Viro 2010-03-23  149  
c8b91accfa1059 Al Viro 2011-03-12  150  		buf.f_type = st->f_type;
c8b91accfa1059 Al Viro 2011-03-12  151  		buf.f_bsize = st->f_bsize;
c8b91accfa1059 Al Viro 2011-03-12  152  		buf.f_blocks = st->f_blocks;
c8b91accfa1059 Al Viro 2011-03-12  153  		buf.f_bfree = st->f_bfree;
c8b91accfa1059 Al Viro 2011-03-12  154  		buf.f_bavail = st->f_bavail;
c8b91accfa1059 Al Viro 2011-03-12  155  		buf.f_files = st->f_files;
c8b91accfa1059 Al Viro 2011-03-12  156  		buf.f_ffree = st->f_ffree;
c8b91accfa1059 Al Viro 2011-03-12  157  		buf.f_fsid = st->f_fsid;
c8b91accfa1059 Al Viro 2011-03-12  158  		buf.f_namelen = st->f_namelen;
c8b91accfa1059 Al Viro 2011-03-12  159  		buf.f_frsize = st->f_frsize;
c8b91accfa1059 Al Viro 2011-03-12  160  		buf.f_flags = st->f_flags;
c8b91accfa1059 Al Viro 2011-03-12  161  		memset(buf.f_spare, 0, sizeof(buf.f_spare));
c8b91accfa1059 Al Viro 2011-03-12  162  	}
c8b91accfa1059 Al Viro 2011-03-12  163  	if (copy_to_user(p, &buf, sizeof(buf)))
c8b91accfa1059 Al Viro 2011-03-12  164  		return -EFAULT;
7ed1ee6118ae77 Al Viro 2010-03-23  165  	return 0;
7ed1ee6118ae77 Al Viro 2010-03-23  166  }
7ed1ee6118ae77 Al Viro 2010-03-23  167  

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp

[-- Attachment #2: config --]
[-- Type: text/plain, Size: 75918 bytes --]

#
# Automatically generated file; DO NOT EDIT.
# Linux/arm 6.1.0-rc3 Kernel Configuration
#
CONFIG_CC_VERSION_TEXT="clang version 16.0.0 (git://gitmirror/llvm_project 463da45892e2d2a262277b91b96f5f8c05dc25d0)"
CONFIG_GCC_VERSION=0
CONFIG_CC_IS_CLANG=y
CONFIG_CLANG_VERSION=160000
CONFIG_AS_IS_LLVM=y
CONFIG_AS_VERSION=160000
CONFIG_LD_VERSION=0
CONFIG_LD_IS_LLD=y
CONFIG_LLD_VERSION=160000
CONFIG_RUST_IS_AVAILABLE=y
CONFIG_CC_HAS_ASM_GOTO_OUTPUT=y
CONFIG_TOOLS_SUPPORT_RELR=y
CONFIG_CC_HAS_ASM_INLINE=y
CONFIG_CC_HAS_NO_PROFILE_FN_ATTR=y
CONFIG_PAHOLE_VERSION=123
CONFIG_IRQ_WORK=y
CONFIG_BUILDTIME_TABLE_SORT=y
CONFIG_THREAD_INFO_IN_TASK=y

#
# General setup
#
CONFIG_BROKEN_ON_SMP=y
CONFIG_INIT_ENV_ARG_LIMIT=32
# CONFIG_COMPILE_TEST is not set
# CONFIG_WERROR is not set
CONFIG_LOCALVERSION=""
CONFIG_LOCALVERSION_AUTO=y
CONFIG_BUILD_SALT=""
CONFIG_HAVE_KERNEL_GZIP=y
CONFIG_HAVE_KERNEL_LZMA=y
CONFIG_HAVE_KERNEL_XZ=y
CONFIG_HAVE_KERNEL_LZO=y
CONFIG_HAVE_KERNEL_LZ4=y
CONFIG_KERNEL_GZIP=y
# CONFIG_KERNEL_LZMA is not set
# CONFIG_KERNEL_XZ is not set
# CONFIG_KERNEL_LZO is not set
# CONFIG_KERNEL_LZ4 is not set
CONFIG_DEFAULT_INIT=""
CONFIG_DEFAULT_HOSTNAME="(none)"
CONFIG_SYSVIPC=y
CONFIG_SYSVIPC_SYSCTL=y
# CONFIG_POSIX_MQUEUE is not set
# CONFIG_WATCH_QUEUE is not set
CONFIG_CROSS_MEMORY_ATTACH=y
# CONFIG_USELIB is not set
# CONFIG_AUDIT is not set
CONFIG_HAVE_ARCH_AUDITSYSCALL=y

#
# IRQ subsystem
#
CONFIG_GENERIC_IRQ_PROBE=y
CONFIG_GENERIC_IRQ_SHOW=y
CONFIG_GENERIC_IRQ_SHOW_LEVEL=y
CONFIG_HARDIRQS_SW_RESEND=y
CONFIG_IRQ_DOMAIN=y
CONFIG_IRQ_FORCED_THREADING=y
CONFIG_SPARSE_IRQ=y
# end of IRQ subsystem

CONFIG_GENERIC_IRQ_MULTI_HANDLER=y
CONFIG_GENERIC_CLOCKEVENTS=y

#
# Timers subsystem
#
CONFIG_HZ_PERIODIC=y
# CONFIG_NO_HZ_IDLE is not set
# CONFIG_NO_HZ is not set
# CONFIG_HIGH_RES_TIMERS is not set
# end of Timers subsystem

CONFIG_BPF=y
CONFIG_HAVE_EBPF_JIT=y

#
# BPF subsystem
#
# CONFIG_BPF_SYSCALL is not set
# CONFIG_BPF_JIT is not set
# end of BPF subsystem

CONFIG_PREEMPT_NONE_BUILD=y
CONFIG_PREEMPT_NONE=y
# CONFIG_PREEMPT_VOLUNTARY is not set
# CONFIG_PREEMPT is not set

#
# CPU/Task time and stats accounting
#
CONFIG_TICK_CPU_ACCOUNTING=y
# CONFIG_VIRT_CPU_ACCOUNTING_GEN is not set
# CONFIG_IRQ_TIME_ACCOUNTING is not set
# CONFIG_BSD_PROCESS_ACCT is not set
# CONFIG_TASKSTATS is not set
# CONFIG_PSI is not set
# end of CPU/Task time and stats accounting

#
# RCU Subsystem
#
CONFIG_TINY_RCU=y
# CONFIG_RCU_EXPERT is not set
CONFIG_SRCU=y
CONFIG_TINY_SRCU=y
# end of RCU Subsystem

# CONFIG_IKCONFIG is not set
# CONFIG_IKHEADERS is not set
CONFIG_LOG_BUF_SHIFT=14
CONFIG_PRINTK_SAFE_LOG_BUF_SHIFT=13
CONFIG_GENERIC_SCHED_CLOCK=y

#
# Scheduler features
#
# end of Scheduler features

CONFIG_CC_IMPLICIT_FALLTHROUGH="-Wimplicit-fallthrough"
CONFIG_GCC12_NO_ARRAY_BOUNDS=y
# CONFIG_CGROUPS is not set
CONFIG_NAMESPACES=y
CONFIG_UTS_NS=y
CONFIG_IPC_NS=y
# CONFIG_USER_NS is not set
CONFIG_PID_NS=y
CONFIG_NET_NS=y
# CONFIG_CHECKPOINT_RESTORE is not set
# CONFIG_SCHED_AUTOGROUP is not set
# CONFIG_SYSFS_DEPRECATED is not set
# CONFIG_RELAY is not set
CONFIG_BLK_DEV_INITRD=y
CONFIG_INITRAMFS_SOURCE=""
CONFIG_RD_GZIP=y
CONFIG_RD_BZIP2=y
CONFIG_RD_LZMA=y
CONFIG_RD_XZ=y
CONFIG_RD_LZO=y
CONFIG_RD_LZ4=y
CONFIG_RD_ZSTD=y
# CONFIG_BOOT_CONFIG is not set
CONFIG_INITRAMFS_PRESERVE_MTIME=y
CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE=y
# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
CONFIG_LD_ORPHAN_WARN=y
CONFIG_SYSCTL=y
CONFIG_HAVE_UID16=y
# CONFIG_EXPERT is not set
CONFIG_UID16=y
CONFIG_MULTIUSER=y
CONFIG_SYSFS_SYSCALL=y
CONFIG_FHANDLE=y
CONFIG_POSIX_TIMERS=y
CONFIG_PRINTK=y
CONFIG_BUG=y
CONFIG_ELF_CORE=y
CONFIG_BASE_FULL=y
CONFIG_FUTEX=y
CONFIG_FUTEX_PI=y
CONFIG_EPOLL=y
CONFIG_SIGNALFD=y
CONFIG_TIMERFD=y
CONFIG_EVENTFD=y
CONFIG_SHMEM=y
CONFIG_AIO=y
CONFIG_IO_URING=y
CONFIG_ADVISE_SYSCALLS=y
CONFIG_MEMBARRIER=y
CONFIG_KALLSYMS=y
# CONFIG_KALLSYMS_ALL is not set
CONFIG_KALLSYMS_BASE_RELATIVE=y
CONFIG_ARCH_HAS_MEMBARRIER_SYNC_CORE=y
CONFIG_RSEQ=y
# CONFIG_EMBEDDED is not set
CONFIG_HAVE_PERF_EVENTS=y
CONFIG_PERF_USE_VMALLOC=y

#
# Kernel Performance Events And Counters
#
# CONFIG_PERF_EVENTS is not set
# end of Kernel Performance Events And Counters

# CONFIG_PROFILING is not set
# end of General setup

CONFIG_ARM=y
CONFIG_ARM_HAS_GROUP_RELOCS=y
CONFIG_SYS_SUPPORTS_APM_EMULATION=y
CONFIG_HAVE_PROC_CPU=y
CONFIG_STACKTRACE_SUPPORT=y
CONFIG_LOCKDEP_SUPPORT=y
CONFIG_FIX_EARLYCON_MEM=y
CONFIG_GENERIC_HWEIGHT=y
CONFIG_GENERIC_CALIBRATE_DELAY=y
CONFIG_ARCH_SUPPORTS_UPROBES=y
CONFIG_ARCH_MTD_XIP=y
CONFIG_ARM_PATCH_PHYS_VIRT=y
CONFIG_NEED_MACH_MEMORY_H=y
CONFIG_PHYS_OFFSET=0xc0000000
CONFIG_GENERIC_BUG=y
CONFIG_PGTABLE_LEVELS=2

#
# System Type
#
CONFIG_MMU=y
CONFIG_ARCH_MMAP_RND_BITS_MIN=8
CONFIG_ARCH_MMAP_RND_BITS_MAX=16

#
# Platform selection
#

#
# CPU Core family selection
#
CONFIG_ARCH_MULTI_V4=y
# CONFIG_ARCH_MULTI_V4T is not set
# CONFIG_ARCH_MULTI_V5 is not set
CONFIG_ARCH_MULTI_V4_V5=y
# CONFIG_ARCH_MULTI_V6 is not set
# CONFIG_ARCH_MULTI_V7 is not set
# end of Platform selection

# CONFIG_ARCH_GEMINI is not set
# CONFIG_ARCH_MOXART is not set
CONFIG_ARCH_SA1100=y
CONFIG_SA1100_ASSABET=y
CONFIG_ASSABET_NEPONSET=y
# CONFIG_SA1100_COLLIE is not set
# CONFIG_SA1100_H3600 is not set

#
# Processor Type
#
CONFIG_CPU_SA1100=y
CONFIG_CPU_32v4=y
CONFIG_CPU_ABRT_EV4=y
CONFIG_CPU_PABRT_LEGACY=y
CONFIG_CPU_CACHE_V4WB=y
CONFIG_CPU_CACHE_VIVT=y
CONFIG_CPU_TLB_V4WB=y
CONFIG_CPU_CP15=y
CONFIG_CPU_CP15_MMU=y
CONFIG_CPU_USE_DOMAINS=y

#
# Processor Features
#
CONFIG_CPU_LITTLE_ENDIAN=y
# CONFIG_CPU_ICACHE_DISABLE is not set
# CONFIG_CPU_DCACHE_DISABLE is not set
CONFIG_NEED_KUSER_HELPERS=y
CONFIG_KUSER_HELPERS=y
CONFIG_ARM_L1_CACHE_SHIFT=5
# end of System Type

CONFIG_SA1111=y

#
# Bus support
#
CONFIG_ISA=y
# end of Bus support

#
# Kernel Features
#
CONFIG_IRQSTACKS=y
CONFIG_VMSPLIT_3G=y
# CONFIG_VMSPLIT_3G_OPT is not set
# CONFIG_VMSPLIT_2G is not set
# CONFIG_VMSPLIT_1G is not set
CONFIG_PAGE_OFFSET=0xC0000000
CONFIG_ARCH_NR_GPIO=0
CONFIG_HZ_FIXED=0
CONFIG_HZ_100=y
# CONFIG_HZ_200 is not set
# CONFIG_HZ_250 is not set
# CONFIG_HZ_300 is not set
# CONFIG_HZ_500 is not set
# CONFIG_HZ_1000 is not set
CONFIG_HZ=100
CONFIG_AEABI=y
# CONFIG_OABI_COMPAT is not set
CONFIG_ARCH_SELECT_MEMORY_MODEL=y
CONFIG_ARCH_SPARSEMEM_ENABLE=y
# CONFIG_HIGHMEM is not set
CONFIG_CPU_SW_DOMAIN_PAN=y
CONFIG_ARM_MODULE_PLTS=y
CONFIG_ARCH_FORCE_MAX_ORDER=9
CONFIG_ALIGNMENT_TRAP=y
# CONFIG_UACCESS_WITH_MEMCPY is not set
# CONFIG_PARAVIRT is not set
# CONFIG_PARAVIRT_TIME_ACCOUNTING is not set
CONFIG_CC_HAVE_STACKPROTECTOR_TLS=y
# end of Kernel Features

#
# Boot options
#
# CONFIG_USE_OF is not set
CONFIG_ATAGS=y
# CONFIG_UNUSED_BOARD_FILES is not set
# CONFIG_DEPRECATED_PARAM_STRUCT is not set
CONFIG_ZBOOT_ROM_TEXT=0x80000
CONFIG_ZBOOT_ROM_BSS=0xc1000000
CONFIG_ZBOOT_ROM=y
CONFIG_CMDLINE="console=ttySA0,38400n8 cpufreq=221200 rw root=/dev/mtdblock2 mtdparts=sa1100:512K(boot),1M(kernel),2560K(initrd),4M(root) load_ramdisk=1 prompt_ramdisk=0 mem=32M noinitrd initrd=0xc0800000,3M"
CONFIG_CMDLINE_FROM_BOOTLOADER=y
# CONFIG_CMDLINE_EXTEND is not set
# CONFIG_CMDLINE_FORCE is not set
# CONFIG_KEXEC is not set
# CONFIG_CRASH_DUMP is not set
# CONFIG_AUTO_ZRELADDR is not set
# end of Boot options

#
# CPU Power Management
#

#
# CPU Frequency scaling
#
CONFIG_CPU_FREQ=y
# CONFIG_CPU_FREQ_STAT is not set
# CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE is not set
# CONFIG_CPU_FREQ_DEFAULT_GOV_POWERSAVE is not set
CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE=y
# CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND is not set
# CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE is not set
# CONFIG_CPU_FREQ_GOV_PERFORMANCE is not set
# CONFIG_CPU_FREQ_GOV_POWERSAVE is not set
CONFIG_CPU_FREQ_GOV_USERSPACE=y
# CONFIG_CPU_FREQ_GOV_ONDEMAND is not set
# CONFIG_CPU_FREQ_GOV_CONSERVATIVE is not set

#
# CPU frequency scaling drivers
#
CONFIG_ARM_SA1110_CPUFREQ=y
# end of CPU Frequency scaling

#
# CPU Idle
#
# CONFIG_CPU_IDLE is not set
# end of CPU Idle
# end of CPU Power Management

#
# Floating point emulation
#

#
# At least one emulation must be selected
#
# end of Floating point emulation

#
# Power management options
#
CONFIG_SUSPEND=y
CONFIG_SUSPEND_FREEZER=y
# CONFIG_HIBERNATION is not set
CONFIG_PM_SLEEP=y
# CONFIG_PM_AUTOSLEEP is not set
# CONFIG_PM_USERSPACE_AUTOSLEEP is not set
# CONFIG_PM_WAKELOCKS is not set
CONFIG_PM=y
# CONFIG_PM_DEBUG is not set
# CONFIG_APM_EMULATION is not set
CONFIG_PM_CLK=y
# CONFIG_WQ_POWER_EFFICIENT_DEFAULT is not set
CONFIG_CPU_PM=y
CONFIG_ARCH_SUSPEND_POSSIBLE=y
CONFIG_ARM_CPU_SUSPEND=y
CONFIG_ARCH_HIBERNATION_POSSIBLE=y
# end of Power management options

CONFIG_AS_VFP_VMRS_FPINST=y

#
# General architecture-dependent options
#
# CONFIG_KPROBES is not set
# CONFIG_JUMP_LABEL is not set
CONFIG_ARCH_USE_BUILTIN_BSWAP=y
CONFIG_HAVE_KPROBES=y
CONFIG_HAVE_KRETPROBES=y
CONFIG_HAVE_OPTPROBES=y
CONFIG_HAVE_NMI=y
CONFIG_TRACE_IRQFLAGS_SUPPORT=y
CONFIG_HAVE_ARCH_TRACEHOOK=y
CONFIG_HAVE_DMA_CONTIGUOUS=y
CONFIG_GENERIC_SMP_IDLE_THREAD=y
CONFIG_GENERIC_IDLE_POLL_SETUP=y
CONFIG_ARCH_HAS_FORTIFY_SOURCE=y
CONFIG_ARCH_HAS_KEEPINITRD=y
CONFIG_ARCH_HAS_SET_MEMORY=y
CONFIG_HAVE_ARCH_THREAD_STRUCT_WHITELIST=y
CONFIG_ARCH_32BIT_OFF_T=y
CONFIG_HAVE_REGS_AND_STACK_ACCESS_API=y
CONFIG_HAVE_RSEQ=y
CONFIG_HAVE_PERF_REGS=y
CONFIG_HAVE_PERF_USER_STACK_DUMP=y
CONFIG_HAVE_ARCH_JUMP_LABEL=y
CONFIG_ARCH_WANT_IPC_PARSE_VERSION=y
CONFIG_HAVE_ARCH_SECCOMP=y
CONFIG_HAVE_ARCH_SECCOMP_FILTER=y
CONFIG_SECCOMP=y
CONFIG_SECCOMP_FILTER=y
# CONFIG_SECCOMP_CACHE_DEBUG is not set
CONFIG_HAVE_STACKPROTECTOR=y
CONFIG_STACKPROTECTOR=y
CONFIG_STACKPROTECTOR_STRONG=y
CONFIG_LTO_NONE=y
CONFIG_HAVE_CONTEXT_TRACKING_USER=y
CONFIG_HAVE_VIRT_CPU_ACCOUNTING_GEN=y
CONFIG_HAVE_IRQ_TIME_ACCOUNTING=y
CONFIG_HAVE_MOD_ARCH_SPECIFIC=y
CONFIG_MODULES_USE_ELF_REL=y
CONFIG_HAVE_IRQ_EXIT_ON_IRQ_STACK=y
CONFIG_HAVE_SOFTIRQ_ON_OWN_STACK=y
CONFIG_SOFTIRQ_ON_OWN_STACK=y
CONFIG_ARCH_HAS_ELF_RANDOMIZE=y
CONFIG_HAVE_ARCH_MMAP_RND_BITS=y
CONFIG_HAVE_EXIT_THREAD=y
CONFIG_ARCH_MMAP_RND_BITS=8
CONFIG_PAGE_SIZE_LESS_THAN_64KB=y
CONFIG_PAGE_SIZE_LESS_THAN_256KB=y
CONFIG_ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT=y
CONFIG_ISA_BUS_API=y
CONFIG_CLONE_BACKWARDS=y
CONFIG_OLD_SIGSUSPEND3=y
CONFIG_OLD_SIGACTION=y
CONFIG_COMPAT_32BIT_TIME=y
CONFIG_CPU_NO_EFFICIENT_FFS=y
CONFIG_HAVE_ARCH_VMAP_STACK=y
CONFIG_VMAP_STACK=y
CONFIG_ARCH_OPTIONAL_KERNEL_RWX=y
CONFIG_ARCH_HAS_STRICT_KERNEL_RWX=y
# CONFIG_STRICT_KERNEL_RWX is not set
CONFIG_ARCH_HAS_STRICT_MODULE_RWX=y
# CONFIG_STRICT_MODULE_RWX is not set
CONFIG_ARCH_WANT_LD_ORPHAN_WARN=y
CONFIG_HAVE_ARCH_PFN_VALID=y

#
# GCOV-based kernel profiling
#
CONFIG_ARCH_HAS_GCOV_PROFILE_ALL=y
# end of GCOV-based kernel profiling

CONFIG_HAVE_GCC_PLUGINS=y
# end of General architecture-dependent options

CONFIG_RT_MUTEXES=y
CONFIG_BASE_SMALL=0
CONFIG_MODULES=y
# CONFIG_MODULE_FORCE_LOAD is not set
CONFIG_MODULE_UNLOAD=y
# CONFIG_MODULE_FORCE_UNLOAD is not set
# CONFIG_MODULE_UNLOAD_TAINT_TRACKING is not set
# CONFIG_MODVERSIONS is not set
# CONFIG_MODULE_SRCVERSION_ALL is not set
# CONFIG_MODULE_SIG is not set
CONFIG_MODULE_COMPRESS_NONE=y
# CONFIG_MODULE_COMPRESS_GZIP is not set
# CONFIG_MODULE_COMPRESS_XZ is not set
# CONFIG_MODULE_COMPRESS_ZSTD is not set
# CONFIG_MODULE_ALLOW_MISSING_NAMESPACE_IMPORTS is not set
CONFIG_MODPROBE_PATH="/sbin/modprobe"
CONFIG_BLOCK=y
CONFIG_BLOCK_LEGACY_AUTOLOAD=y
CONFIG_BLK_DEV_BSG_COMMON=m
# CONFIG_BLK_DEV_BSGLIB is not set
# CONFIG_BLK_DEV_INTEGRITY is not set
# CONFIG_BLK_DEV_ZONED is not set
# CONFIG_BLK_WBT is not set
# CONFIG_BLK_SED_OPAL is not set
# CONFIG_BLK_INLINE_ENCRYPTION is not set

#
# Partition Types
#
CONFIG_PARTITION_ADVANCED=y
# CONFIG_ACORN_PARTITION is not set
# CONFIG_AIX_PARTITION is not set
# CONFIG_OSF_PARTITION is not set
# CONFIG_AMIGA_PARTITION is not set
# CONFIG_ATARI_PARTITION is not set
# CONFIG_MAC_PARTITION is not set
# CONFIG_MSDOS_PARTITION is not set
# CONFIG_LDM_PARTITION is not set
# CONFIG_SGI_PARTITION is not set
# CONFIG_ULTRIX_PARTITION is not set
# CONFIG_SUN_PARTITION is not set
# CONFIG_KARMA_PARTITION is not set
CONFIG_EFI_PARTITION=y
# CONFIG_SYSV68_PARTITION is not set
# CONFIG_CMDLINE_PARTITION is not set
# end of Partition Types

CONFIG_BLK_PM=y

#
# IO Schedulers
#
CONFIG_MQ_IOSCHED_DEADLINE=y
CONFIG_MQ_IOSCHED_KYBER=y
# CONFIG_IOSCHED_BFQ is not set
# end of IO Schedulers

CONFIG_INLINE_SPIN_UNLOCK_IRQ=y
CONFIG_INLINE_READ_UNLOCK=y
CONFIG_INLINE_READ_UNLOCK_IRQ=y
CONFIG_INLINE_WRITE_UNLOCK=y
CONFIG_INLINE_WRITE_UNLOCK_IRQ=y
CONFIG_ARCH_SUPPORTS_ATOMIC_RMW=y
CONFIG_ARCH_HAS_NON_OVERLAPPING_ADDRESS_SPACE=y
CONFIG_FREEZER=y

#
# Executable file formats
#
CONFIG_BINFMT_ELF=y
# CONFIG_BINFMT_ELF_FDPIC is not set
CONFIG_ELFCORE=y
CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS=y
CONFIG_BINFMT_SCRIPT=y
CONFIG_ARCH_HAS_BINFMT_FLAT=y
# CONFIG_BINFMT_FLAT is not set
CONFIG_BINFMT_FLAT_ARGVP_ENVP_ON_STACK=y
# CONFIG_BINFMT_MISC is not set
CONFIG_COREDUMP=y
# end of Executable file formats

#
# Memory Management options
#
CONFIG_SWAP=y
# CONFIG_ZSWAP is not set

#
# SLAB allocator options
#
# CONFIG_SLAB is not set
CONFIG_SLUB=y
CONFIG_SLAB_MERGE_DEFAULT=y
# CONFIG_SLAB_FREELIST_RANDOM is not set
# CONFIG_SLAB_FREELIST_HARDENED is not set
# CONFIG_SLUB_STATS is not set
# end of SLAB allocator options

# CONFIG_SHUFFLE_PAGE_ALLOCATOR is not set
CONFIG_COMPAT_BRK=y
CONFIG_SELECT_MEMORY_MODEL=y
CONFIG_SPARSEMEM_MANUAL=y
CONFIG_SPARSEMEM=y
CONFIG_SPARSEMEM_STATIC=y
CONFIG_ARCH_KEEP_MEMBLOCK=y
CONFIG_SPLIT_PTLOCK_CPUS=999999
CONFIG_COMPACTION=y
CONFIG_COMPACT_UNEVICTABLE_DEFAULT=1
# CONFIG_PAGE_REPORTING is not set
CONFIG_MIGRATION=y
# CONFIG_KSM is not set
CONFIG_DEFAULT_MMAP_MIN_ADDR=4096
CONFIG_ARCH_WANT_GENERAL_HUGETLB=y
CONFIG_NEED_PER_CPU_KM=y
# CONFIG_CMA is not set
CONFIG_GENERIC_EARLY_IOREMAP=y
# CONFIG_IDLE_PAGE_TRACKING is not set
CONFIG_ARCH_HAS_CURRENT_STACK_POINTER=y
CONFIG_ZONE_DMA=y
CONFIG_VM_EVENT_COUNTERS=y
# CONFIG_PERCPU_STATS is not set

#
# GUP_TEST needs to have DEBUG_FS enabled
#
# CONFIG_ANON_VMA_NAME is not set
# CONFIG_USERFAULTFD is not set

#
# Data Access Monitoring
#
# CONFIG_DAMON is not set
# end of Data Access Monitoring
# end of Memory Management options

CONFIG_NET=y

#
# Networking options
#
CONFIG_PACKET=y
# CONFIG_PACKET_DIAG is not set
CONFIG_UNIX=y
CONFIG_UNIX_SCM=y
CONFIG_AF_UNIX_OOB=y
# CONFIG_UNIX_DIAG is not set
# CONFIG_TLS is not set
# CONFIG_XFRM_USER is not set
# CONFIG_NET_KEY is not set
CONFIG_INET=y
# CONFIG_IP_MULTICAST is not set
# CONFIG_IP_ADVANCED_ROUTER is not set
# CONFIG_IP_PNP is not set
# CONFIG_NET_IPIP is not set
# CONFIG_NET_IPGRE_DEMUX is not set
# CONFIG_SYN_COOKIES is not set
# CONFIG_NET_IPVTI is not set
# CONFIG_NET_FOU is not set
# CONFIG_INET_AH is not set
# CONFIG_INET_ESP is not set
# CONFIG_INET_IPCOMP is not set
CONFIG_INET_DIAG=y
CONFIG_INET_TCP_DIAG=y
# CONFIG_INET_UDP_DIAG is not set
# CONFIG_INET_RAW_DIAG is not set
# CONFIG_INET_DIAG_DESTROY is not set
# CONFIG_TCP_CONG_ADVANCED is not set
CONFIG_TCP_CONG_CUBIC=y
CONFIG_DEFAULT_TCP_CONG="cubic"
# CONFIG_TCP_MD5SIG is not set
# CONFIG_IPV6 is not set
# CONFIG_MPTCP is not set
# CONFIG_NETWORK_SECMARK is not set
CONFIG_NET_PTP_CLASSIFY=y
# CONFIG_NETWORK_PHY_TIMESTAMPING is not set
# CONFIG_NETFILTER is not set
# CONFIG_BPFILTER is not set
# CONFIG_IP_DCCP is not set
# CONFIG_IP_SCTP is not set
# CONFIG_RDS is not set
# CONFIG_TIPC is not set
# CONFIG_ATM is not set
# CONFIG_L2TP is not set
# CONFIG_BRIDGE is not set
# CONFIG_NET_DSA is not set
# CONFIG_VLAN_8021Q is not set
# CONFIG_LLC2 is not set
# CONFIG_ATALK is not set
# CONFIG_X25 is not set
# CONFIG_LAPB is not set
# CONFIG_PHONET is not set
# CONFIG_IEEE802154 is not set
# CONFIG_NET_SCHED is not set
# CONFIG_DCB is not set
# CONFIG_BATMAN_ADV is not set
# CONFIG_OPENVSWITCH is not set
# CONFIG_VSOCKETS is not set
# CONFIG_NETLINK_DIAG is not set
# CONFIG_MPLS is not set
# CONFIG_NET_NSH is not set
# CONFIG_HSR is not set
# CONFIG_NET_SWITCHDEV is not set
# CONFIG_NET_L3_MASTER_DEV is not set
# CONFIG_QRTR is not set
# CONFIG_NET_NCSI is not set
CONFIG_NET_RX_BUSY_POLL=y
CONFIG_BQL=y

#
# Network testing
#
# CONFIG_NET_PKTGEN is not set
# end of Network testing
# end of Networking options

# CONFIG_HAMRADIO is not set
# CONFIG_CAN is not set
# CONFIG_BT is not set
# CONFIG_AF_RXRPC is not set
# CONFIG_AF_KCM is not set
# CONFIG_MCTP is not set
CONFIG_WIRELESS=y
# CONFIG_CFG80211 is not set

#
# CFG80211 needs to be enabled for MAC80211
#
CONFIG_MAC80211_STA_HASH_MAX_SIZE=0
# CONFIG_RFKILL is not set
# CONFIG_NET_9P is not set
# CONFIG_CAIF is not set
# CONFIG_CEPH_LIB is not set
# CONFIG_NFC is not set
# CONFIG_PSAMPLE is not set
# CONFIG_NET_IFE is not set
# CONFIG_LWTUNNEL is not set
# CONFIG_FAILOVER is not set
CONFIG_ETHTOOL_NETLINK=y

#
# Device Drivers
#
CONFIG_HAVE_PCI=y
# CONFIG_PCI is not set
CONFIG_PCCARD=y
CONFIG_PCMCIA=y
CONFIG_PCMCIA_LOAD_CIS=y
CONFIG_PCMCIA_MAX1600=y

#
# PC-card bridges
#
# CONFIG_I82365 is not set
# CONFIG_TCIC is not set
CONFIG_PCMCIA_SOC_COMMON=y
CONFIG_PCMCIA_SA11XX_BASE=y
CONFIG_PCMCIA_SA1100=y
CONFIG_PCMCIA_SA1111=y
# CONFIG_PCMCIA_DEBUG is not set

#
# Generic Driver Options
#
# CONFIG_UEVENT_HELPER is not set
# CONFIG_DEVTMPFS is not set
CONFIG_STANDALONE=y
CONFIG_PREVENT_FIRMWARE_BUILD=y

#
# Firmware loader
#
CONFIG_FW_LOADER=y
CONFIG_EXTRA_FIRMWARE=""
# CONFIG_FW_LOADER_USER_HELPER is not set
# CONFIG_FW_LOADER_COMPRESS is not set
CONFIG_FW_CACHE=y
# CONFIG_FW_UPLOAD is not set
# end of Firmware loader

CONFIG_ALLOW_DEV_COREDUMP=y
# CONFIG_DEBUG_DRIVER is not set
# CONFIG_DEBUG_DEVRES is not set
# CONFIG_DEBUG_TEST_DRIVER_REMOVE is not set
# CONFIG_TEST_ASYNC_DRIVER_PROBE is not set
CONFIG_GENERIC_CPU_AUTOPROBE=y
# end of Generic Driver Options

#
# Bus devices
#
# CONFIG_BRCMSTB_GISB_ARB is not set
# CONFIG_MHI_BUS is not set
# CONFIG_MHI_BUS_EP is not set
# end of Bus devices

# CONFIG_CONNECTOR is not set

#
# Firmware Drivers
#

#
# ARM System Control and Management Interface Protocol
#
# CONFIG_ARM_SCMI_PROTOCOL is not set
# end of ARM System Control and Management Interface Protocol

# CONFIG_FW_CFG_SYSFS is not set
# CONFIG_GOOGLE_FIRMWARE is not set

#
# Tegra firmware driver
#
# end of Tegra firmware driver
# end of Firmware Drivers

# CONFIG_GNSS is not set
CONFIG_MTD=y
# CONFIG_MTD_TESTS is not set

#
# Partition parsers
#
# CONFIG_MTD_AR7_PARTS is not set
CONFIG_MTD_CMDLINE_PARTS=y
# CONFIG_MTD_AFS_PARTS is not set
CONFIG_MTD_REDBOOT_PARTS=y
CONFIG_MTD_REDBOOT_DIRECTORY_BLOCK=-1
# CONFIG_MTD_REDBOOT_PARTS_UNALLOCATED is not set
# CONFIG_MTD_REDBOOT_PARTS_READONLY is not set
# end of Partition parsers

#
# User Modules And Translation Layers
#
CONFIG_MTD_BLKDEVS=y
CONFIG_MTD_BLOCK=y

#
# Note that in some cases UBI block is preferred. See MTD_UBI_BLOCK.
#
# CONFIG_FTL is not set
# CONFIG_NFTL is not set
# CONFIG_INFTL is not set
# CONFIG_RFD_FTL is not set
# CONFIG_SSFDC is not set
# CONFIG_SM_FTL is not set
# CONFIG_MTD_OOPS is not set
# CONFIG_MTD_SWAP is not set
# CONFIG_MTD_PARTITIONED_MASTER is not set

#
# RAM/ROM/Flash chip drivers
#
CONFIG_MTD_CFI=y
# CONFIG_MTD_JEDECPROBE is not set
CONFIG_MTD_GEN_PROBE=y
CONFIG_MTD_CFI_ADV_OPTIONS=y
CONFIG_MTD_CFI_NOSWAP=y
# CONFIG_MTD_CFI_BE_BYTE_SWAP is not set
# CONFIG_MTD_CFI_LE_BYTE_SWAP is not set
# CONFIG_MTD_CFI_GEOMETRY is not set
CONFIG_MTD_MAP_BANK_WIDTH_1=y
CONFIG_MTD_MAP_BANK_WIDTH_2=y
CONFIG_MTD_MAP_BANK_WIDTH_4=y
CONFIG_MTD_CFI_I1=y
CONFIG_MTD_CFI_I2=y
# CONFIG_MTD_OTP is not set
CONFIG_MTD_CFI_INTELEXT=y
# CONFIG_MTD_CFI_AMDSTD is not set
# CONFIG_MTD_CFI_STAA is not set
CONFIG_MTD_CFI_UTIL=y
CONFIG_MTD_RAM=y
# CONFIG_MTD_ROM is not set
# CONFIG_MTD_ABSENT is not set
# CONFIG_MTD_XIP is not set
# end of RAM/ROM/Flash chip drivers

#
# Mapping drivers for chip access
#
# CONFIG_MTD_COMPLEX_MAPPINGS is not set
# CONFIG_MTD_PHYSMAP is not set
CONFIG_MTD_SA1100=y
# CONFIG_MTD_PLATRAM is not set
# end of Mapping drivers for chip access

#
# Self-contained MTD device drivers
#
# CONFIG_MTD_SLRAM is not set
# CONFIG_MTD_PHRAM is not set
# CONFIG_MTD_MTDRAM is not set
# CONFIG_MTD_BLOCK2MTD is not set

#
# Disk-On-Chip Device Drivers
#
# CONFIG_MTD_DOCG3 is not set
# end of Self-contained MTD device drivers

#
# NAND
#
# CONFIG_MTD_ONENAND is not set
# CONFIG_MTD_RAW_NAND is not set

#
# ECC engine support
#
# CONFIG_MTD_NAND_ECC_SW_HAMMING is not set
# CONFIG_MTD_NAND_ECC_SW_BCH is not set
# CONFIG_MTD_NAND_ECC_MXIC is not set
# end of ECC engine support
# end of NAND

#
# LPDDR & LPDDR2 PCM memory drivers
#
# CONFIG_MTD_LPDDR is not set
# CONFIG_MTD_LPDDR2_NVM is not set
# end of LPDDR & LPDDR2 PCM memory drivers

# CONFIG_MTD_UBI is not set
# CONFIG_MTD_HYPERBUS is not set
# CONFIG_OF is not set
CONFIG_ARCH_MIGHT_HAVE_PC_PARPORT=y
# CONFIG_PARPORT is not set
# CONFIG_PNP is not set
CONFIG_BLK_DEV=y
# CONFIG_BLK_DEV_NULL_BLK is not set
# CONFIG_BLK_DEV_LOOP is not set
# CONFIG_BLK_DEV_DRBD is not set
# CONFIG_BLK_DEV_NBD is not set
CONFIG_BLK_DEV_RAM=y
CONFIG_BLK_DEV_RAM_COUNT=16
CONFIG_BLK_DEV_RAM_SIZE=8192
# CONFIG_CDROM_PKTCDVD is not set
# CONFIG_ATA_OVER_ETH is not set
# CONFIG_BLK_DEV_RBD is not set
# CONFIG_BLK_DEV_UBLK is not set

#
# NVME Support
#
# CONFIG_NVME_FC is not set
# CONFIG_NVME_TCP is not set
# end of NVME Support

#
# Misc devices
#
# CONFIG_AD525X_DPOT is not set
# CONFIG_DUMMY_IRQ is not set
# CONFIG_ICS932S401 is not set
# CONFIG_ENCLOSURE_SERVICES is not set
# CONFIG_APDS9802ALS is not set
# CONFIG_ISL29003 is not set
# CONFIG_ISL29020 is not set
# CONFIG_SENSORS_TSL2550 is not set
# CONFIG_SENSORS_BH1770 is not set
# CONFIG_SENSORS_APDS990X is not set
# CONFIG_HMC6352 is not set
# CONFIG_DS1682 is not set
# CONFIG_SRAM is not set
# CONFIG_XILINX_SDFEC is not set
# CONFIG_C2PORT is not set

#
# EEPROM support
#
# CONFIG_EEPROM_AT24 is not set
# CONFIG_EEPROM_LEGACY is not set
# CONFIG_EEPROM_MAX6875 is not set
# CONFIG_EEPROM_93CX6 is not set
# CONFIG_EEPROM_IDT_89HPESX is not set
# CONFIG_EEPROM_EE1004 is not set
# end of EEPROM support

#
# Texas Instruments shared transport line discipline
#
# CONFIG_TI_ST is not set
# end of Texas Instruments shared transport line discipline

# CONFIG_SENSORS_LIS3_I2C is not set
# CONFIG_ALTERA_STAPL is not set
# CONFIG_ECHO is not set
# CONFIG_MISC_RTSX_USB is not set
# CONFIG_PVPANIC is not set
# end of Misc devices

#
# SCSI device support
#
CONFIG_SCSI_MOD=m
# CONFIG_RAID_ATTRS is not set
CONFIG_SCSI_COMMON=m
CONFIG_SCSI=m
CONFIG_SCSI_DMA=y
CONFIG_SCSI_PROC_FS=y

#
# SCSI support type (disk, tape, CD-ROM)
#
CONFIG_BLK_DEV_SD=m
# CONFIG_CHR_DEV_ST is not set
# CONFIG_BLK_DEV_SR is not set
# CONFIG_CHR_DEV_SG is not set
CONFIG_BLK_DEV_BSG=y
# CONFIG_CHR_DEV_SCH is not set
# CONFIG_SCSI_CONSTANTS is not set
# CONFIG_SCSI_LOGGING is not set
# CONFIG_SCSI_SCAN_ASYNC is not set

#
# SCSI Transports
#
# CONFIG_SCSI_SPI_ATTRS is not set
# CONFIG_SCSI_FC_ATTRS is not set
# CONFIG_SCSI_ISCSI_ATTRS is not set
# CONFIG_SCSI_SAS_ATTRS is not set
# CONFIG_SCSI_SAS_LIBSAS is not set
# CONFIG_SCSI_SRP_ATTRS is not set
# end of SCSI Transports

CONFIG_SCSI_LOWLEVEL=y
# CONFIG_ISCSI_TCP is not set
# CONFIG_ISCSI_BOOT_SYSFS is not set
# CONFIG_SCSI_AHA152X is not set
# CONFIG_SCSI_FDOMAIN_ISA is not set
# CONFIG_SCSI_GENERIC_NCR5380 is not set
# CONFIG_SCSI_QLOGIC_FAS is not set
# CONFIG_SCSI_DEBUG is not set
# CONFIG_SCSI_LOWLEVEL_PCMCIA is not set
# CONFIG_SCSI_DH is not set
# end of SCSI device support

# CONFIG_ATA is not set
# CONFIG_MD is not set
# CONFIG_TARGET_CORE is not set
CONFIG_NETDEVICES=y
CONFIG_MII=y
CONFIG_NET_CORE=y
# CONFIG_BONDING is not set
# CONFIG_DUMMY is not set
# CONFIG_WIREGUARD is not set
# CONFIG_EQUALIZER is not set
# CONFIG_NET_TEAM is not set
# CONFIG_MACVLAN is not set
# CONFIG_IPVLAN is not set
# CONFIG_VXLAN is not set
# CONFIG_GENEVE is not set
# CONFIG_BAREUDP is not set
# CONFIG_GTP is not set
# CONFIG_MACSEC is not set
# CONFIG_NETCONSOLE is not set
# CONFIG_TUN is not set
# CONFIG_TUN_VNET_CROSS_LE is not set
# CONFIG_VETH is not set
# CONFIG_NLMON is not set
# CONFIG_ARCNET is not set
CONFIG_ETHERNET=y
CONFIG_NET_VENDOR_3COM=y
# CONFIG_EL3 is not set
# CONFIG_PCMCIA_3C574 is not set
# CONFIG_PCMCIA_3C589 is not set
CONFIG_NET_VENDOR_ALACRITECH=y
# CONFIG_ALTERA_TSE is not set
CONFIG_NET_VENDOR_AMAZON=y
CONFIG_NET_VENDOR_AMD=y
# CONFIG_PCMCIA_NMCLAN is not set
CONFIG_NET_VENDOR_AQUANTIA=y
CONFIG_NET_VENDOR_ARC=y
CONFIG_NET_VENDOR_ASIX=y
CONFIG_NET_VENDOR_BROADCOM=y
# CONFIG_B44 is not set
# CONFIG_BCMGENET is not set
# CONFIG_SYSTEMPORT is not set
CONFIG_NET_VENDOR_CADENCE=y
# CONFIG_MACB is not set
CONFIG_NET_VENDOR_CAVIUM=y
CONFIG_NET_VENDOR_CIRRUS=y
# CONFIG_CS89x0_ISA is not set
# CONFIG_CS89x0_PLATFORM is not set
CONFIG_NET_VENDOR_CORTINA=y
CONFIG_NET_VENDOR_DAVICOM=y
# CONFIG_DM9000 is not set
# CONFIG_DNET is not set
CONFIG_NET_VENDOR_ENGLEDER=y
# CONFIG_TSNEP is not set
CONFIG_NET_VENDOR_EZCHIP=y
CONFIG_NET_VENDOR_FARADAY=y
# CONFIG_FTMAC100 is not set
# CONFIG_FTGMAC100 is not set
CONFIG_NET_VENDOR_FUJITSU=y
# CONFIG_PCMCIA_FMVJ18X is not set
CONFIG_NET_VENDOR_FUNGIBLE=y
CONFIG_NET_VENDOR_GOOGLE=y
CONFIG_NET_VENDOR_HUAWEI=y
CONFIG_NET_VENDOR_I825XX=y
CONFIG_NET_VENDOR_INTEL=y
CONFIG_NET_VENDOR_WANGXUN=y
CONFIG_NET_VENDOR_LITEX=y
CONFIG_NET_VENDOR_MARVELL=y
# CONFIG_MVMDIO is not set
CONFIG_NET_VENDOR_MELLANOX=y
# CONFIG_MLXSW_CORE is not set
# CONFIG_MLXFW is not set
CONFIG_NET_VENDOR_MICREL=y
# CONFIG_KS8851_MLL is not set
CONFIG_NET_VENDOR_MICROCHIP=y
# CONFIG_VCAP is not set
CONFIG_NET_VENDOR_MICROSEMI=y
CONFIG_NET_VENDOR_MICROSOFT=y
CONFIG_NET_VENDOR_NI=y
# CONFIG_NI_XGE_MANAGEMENT_ENET is not set
CONFIG_NET_VENDOR_NATSEMI=y
CONFIG_NET_VENDOR_NETRONOME=y
CONFIG_NET_VENDOR_8390=y
# CONFIG_PCMCIA_AXNET is not set
# CONFIG_AX88796 is not set
# CONFIG_NE2000 is not set
CONFIG_PCMCIA_PCNET=y
# CONFIG_ULTRA is not set
# CONFIG_WD80x3 is not set
# CONFIG_ETHOC is not set
CONFIG_NET_VENDOR_PENSANDO=y
CONFIG_NET_VENDOR_QUALCOMM=y
# CONFIG_QCOM_EMAC is not set
# CONFIG_RMNET is not set
CONFIG_NET_VENDOR_RENESAS=y
CONFIG_NET_VENDOR_ROCKER=y
CONFIG_NET_VENDOR_SAMSUNG=y
# CONFIG_SXGBE_ETH is not set
CONFIG_NET_VENDOR_SEEQ=y
CONFIG_NET_VENDOR_SOLARFLARE=y
CONFIG_NET_VENDOR_SMSC=y
CONFIG_SMC9194=y
CONFIG_SMC91X=y
# CONFIG_PCMCIA_SMC91C92 is not set
# CONFIG_SMSC911X is not set
CONFIG_NET_VENDOR_SOCIONEXT=y
CONFIG_NET_VENDOR_STMICRO=y
# CONFIG_STMMAC_ETH is not set
CONFIG_NET_VENDOR_SYNOPSYS=y
# CONFIG_DWC_XLGMAC is not set
CONFIG_NET_VENDOR_VERTEXCOM=y
CONFIG_NET_VENDOR_VIA=y
CONFIG_NET_VENDOR_WIZNET=y
# CONFIG_WIZNET_W5100 is not set
# CONFIG_WIZNET_W5300 is not set
CONFIG_NET_VENDOR_XILINX=y
# CONFIG_XILINX_EMACLITE is not set
# CONFIG_XILINX_AXI_EMAC is not set
# CONFIG_XILINX_LL_TEMAC is not set
CONFIG_NET_VENDOR_XIRCOM=y
# CONFIG_PCMCIA_XIRC2PS is not set
# CONFIG_PHYLIB is not set
# CONFIG_PSE_CONTROLLER is not set
# CONFIG_MDIO_DEVICE is not set

#
# PCS device drivers
#
# end of PCS device drivers

# CONFIG_PPP is not set
# CONFIG_SLIP is not set

#
# Host-side USB support is needed for USB Network Adapter support
#
CONFIG_USB_NET_DRIVERS=m
# CONFIG_USB_CATC is not set
# CONFIG_USB_KAWETH is not set
# CONFIG_USB_PEGASUS is not set
# CONFIG_USB_RTL8150 is not set
# CONFIG_USB_RTL8152 is not set
# CONFIG_USB_LAN78XX is not set
# CONFIG_USB_USBNET is not set
# CONFIG_USB_IPHETH is not set
CONFIG_WLAN=y
CONFIG_WLAN_VENDOR_ADMTEK=y
CONFIG_WLAN_VENDOR_ATH=y
# CONFIG_ATH_DEBUG is not set
CONFIG_WLAN_VENDOR_ATMEL=y
CONFIG_WLAN_VENDOR_BROADCOM=y
CONFIG_WLAN_VENDOR_CISCO=y
CONFIG_WLAN_VENDOR_INTEL=y
CONFIG_WLAN_VENDOR_INTERSIL=y
# CONFIG_HOSTAP is not set
CONFIG_WLAN_VENDOR_MARVELL=y
CONFIG_WLAN_VENDOR_MEDIATEK=y
CONFIG_WLAN_VENDOR_MICROCHIP=y
CONFIG_WLAN_VENDOR_PURELIFI=y
CONFIG_WLAN_VENDOR_RALINK=y
CONFIG_WLAN_VENDOR_REALTEK=y
CONFIG_WLAN_VENDOR_RSI=y
CONFIG_WLAN_VENDOR_SILABS=y
CONFIG_WLAN_VENDOR_ST=y
CONFIG_WLAN_VENDOR_TI=y
CONFIG_WLAN_VENDOR_ZYDAS=y
CONFIG_WLAN_VENDOR_QUANTENNA=y
# CONFIG_PCMCIA_RAYCS is not set
# CONFIG_WAN is not set

#
# Wireless WAN
#
# CONFIG_WWAN is not set
# end of Wireless WAN

# CONFIG_NET_FAILOVER is not set
CONFIG_NETDEV_LEGACY_INIT=y
# CONFIG_ISDN is not set

#
# Input device support
#
CONFIG_INPUT=y
CONFIG_INPUT_LEDS=y
CONFIG_INPUT_FF_MEMLESS=y
# CONFIG_INPUT_SPARSEKMAP is not set
# CONFIG_INPUT_MATRIXKMAP is not set
CONFIG_INPUT_VIVALDIFMAP=y

#
# Userland interfaces
#
# CONFIG_INPUT_MOUSEDEV is not set
# CONFIG_INPUT_JOYDEV is not set
# CONFIG_INPUT_EVDEV is not set
# CONFIG_INPUT_EVBUG is not set

#
# Input Device Drivers
#
CONFIG_INPUT_KEYBOARD=y
# CONFIG_KEYBOARD_ADP5588 is not set
# CONFIG_KEYBOARD_ADP5589 is not set
CONFIG_KEYBOARD_ATKBD=y
# CONFIG_KEYBOARD_QT1050 is not set
# CONFIG_KEYBOARD_QT1070 is not set
# CONFIG_KEYBOARD_QT2160 is not set
# CONFIG_KEYBOARD_DLINK_DIR685 is not set
# CONFIG_KEYBOARD_LKKBD is not set
# CONFIG_KEYBOARD_GPIO is not set
# CONFIG_KEYBOARD_GPIO_POLLED is not set
# CONFIG_KEYBOARD_TCA6416 is not set
# CONFIG_KEYBOARD_TCA8418 is not set
# CONFIG_KEYBOARD_MATRIX is not set
# CONFIG_KEYBOARD_LM8323 is not set
# CONFIG_KEYBOARD_LM8333 is not set
# CONFIG_KEYBOARD_MAX7359 is not set
# CONFIG_KEYBOARD_MCS is not set
# CONFIG_KEYBOARD_MPR121 is not set
# CONFIG_KEYBOARD_NEWTON is not set
# CONFIG_KEYBOARD_OPENCORES is not set
# CONFIG_KEYBOARD_PINEPHONE is not set
# CONFIG_KEYBOARD_SAMSUNG is not set
# CONFIG_KEYBOARD_STOWAWAY is not set
# CONFIG_KEYBOARD_SUNKBD is not set
# CONFIG_KEYBOARD_TM2_TOUCHKEY is not set
# CONFIG_KEYBOARD_XTKBD is not set
# CONFIG_KEYBOARD_CYPRESS_SF is not set
# CONFIG_INPUT_MOUSE is not set
# CONFIG_INPUT_JOYSTICK is not set
# CONFIG_INPUT_TABLET is not set
CONFIG_INPUT_TOUCHSCREEN=y
# CONFIG_TOUCHSCREEN_AD7879 is not set
# CONFIG_TOUCHSCREEN_ATMEL_MXT is not set
# CONFIG_TOUCHSCREEN_AUO_PIXCIR is not set
# CONFIG_TOUCHSCREEN_BU21013 is not set
# CONFIG_TOUCHSCREEN_BU21029 is not set
# CONFIG_TOUCHSCREEN_CY8CTMA140 is not set
# CONFIG_TOUCHSCREEN_CY8CTMG110 is not set
# CONFIG_TOUCHSCREEN_CYTTSP_CORE is not set
# CONFIG_TOUCHSCREEN_CYTTSP4_CORE is not set
# CONFIG_TOUCHSCREEN_DYNAPRO is not set
# CONFIG_TOUCHSCREEN_HAMPSHIRE is not set
# CONFIG_TOUCHSCREEN_EETI is not set
# CONFIG_TOUCHSCREEN_EGALAX_SERIAL is not set
# CONFIG_TOUCHSCREEN_EXC3000 is not set
# CONFIG_TOUCHSCREEN_FUJITSU is not set
# CONFIG_TOUCHSCREEN_GOODIX is not set
# CONFIG_TOUCHSCREEN_HIDEEP is not set
# CONFIG_TOUCHSCREEN_HYCON_HY46XX is not set
# CONFIG_TOUCHSCREEN_ILI210X is not set
# CONFIG_TOUCHSCREEN_ILITEK is not set
# CONFIG_TOUCHSCREEN_S6SY761 is not set
# CONFIG_TOUCHSCREEN_GUNZE is not set
# CONFIG_TOUCHSCREEN_EKTF2127 is not set
# CONFIG_TOUCHSCREEN_ELAN is not set
# CONFIG_TOUCHSCREEN_ELO is not set
# CONFIG_TOUCHSCREEN_WACOM_W8001 is not set
# CONFIG_TOUCHSCREEN_WACOM_I2C is not set
# CONFIG_TOUCHSCREEN_MAX11801 is not set
# CONFIG_TOUCHSCREEN_MCS5000 is not set
# CONFIG_TOUCHSCREEN_MMS114 is not set
# CONFIG_TOUCHSCREEN_MELFAS_MIP4 is not set
# CONFIG_TOUCHSCREEN_MSG2638 is not set
# CONFIG_TOUCHSCREEN_MTOUCH is not set
# CONFIG_TOUCHSCREEN_IMAGIS is not set
# CONFIG_TOUCHSCREEN_INEXIO is not set
# CONFIG_TOUCHSCREEN_MK712 is not set
# CONFIG_TOUCHSCREEN_HTCPEN is not set
# CONFIG_TOUCHSCREEN_PENMOUNT is not set
# CONFIG_TOUCHSCREEN_EDT_FT5X06 is not set
# CONFIG_TOUCHSCREEN_TOUCHRIGHT is not set
# CONFIG_TOUCHSCREEN_TOUCHWIN is not set
# CONFIG_TOUCHSCREEN_PIXCIR is not set
# CONFIG_TOUCHSCREEN_WDT87XX_I2C is not set
# CONFIG_TOUCHSCREEN_USB_COMPOSITE is not set
# CONFIG_TOUCHSCREEN_TOUCHIT213 is not set
# CONFIG_TOUCHSCREEN_TSC_SERIO is not set
# CONFIG_TOUCHSCREEN_TSC2004 is not set
# CONFIG_TOUCHSCREEN_TSC2007 is not set
# CONFIG_TOUCHSCREEN_RM_TS is not set
# CONFIG_TOUCHSCREEN_SILEAD is not set
# CONFIG_TOUCHSCREEN_SIS_I2C is not set
# CONFIG_TOUCHSCREEN_ST1232 is not set
# CONFIG_TOUCHSCREEN_STMFTS is not set
# CONFIG_TOUCHSCREEN_SX8654 is not set
# CONFIG_TOUCHSCREEN_TPS6507X is not set
# CONFIG_TOUCHSCREEN_ZET6223 is not set
# CONFIG_TOUCHSCREEN_ZFORCE is not set
# CONFIG_TOUCHSCREEN_ROHM_BU21023 is not set
# CONFIG_TOUCHSCREEN_IQS5XX is not set
# CONFIG_TOUCHSCREEN_ZINITIX is not set
# CONFIG_INPUT_MISC is not set
# CONFIG_RMI4_CORE is not set

#
# Hardware I/O ports
#
CONFIG_SERIO=y
CONFIG_SERIO_SERPORT=m
CONFIG_SERIO_SA1111=y
CONFIG_SERIO_LIBPS2=y
# CONFIG_SERIO_RAW is not set
# CONFIG_SERIO_ALTERA_PS2 is not set
# CONFIG_SERIO_PS2MULT is not set
# CONFIG_SERIO_ARC_PS2 is not set
# CONFIG_SERIO_GPIO_PS2 is not set
# CONFIG_USERIO is not set
# CONFIG_GAMEPORT is not set
# end of Hardware I/O ports
# end of Input device support

#
# Character devices
#
CONFIG_TTY=y
CONFIG_VT=y
CONFIG_CONSOLE_TRANSLATIONS=y
CONFIG_VT_CONSOLE=y
CONFIG_VT_CONSOLE_SLEEP=y
CONFIG_HW_CONSOLE=y
CONFIG_VT_HW_CONSOLE_BINDING=y
CONFIG_UNIX98_PTYS=y
CONFIG_LEGACY_PTYS=y
CONFIG_LEGACY_PTY_COUNT=64
CONFIG_LDISC_AUTOLOAD=y

#
# Serial drivers
#
CONFIG_SERIAL_8250=y
CONFIG_SERIAL_8250_DEPRECATED_OPTIONS=y
CONFIG_SERIAL_8250_16550A_VARIANTS=y
# CONFIG_SERIAL_8250_FINTEK is not set
# CONFIG_SERIAL_8250_CONSOLE is not set
CONFIG_SERIAL_8250_CS=y
CONFIG_SERIAL_8250_NR_UARTS=4
CONFIG_SERIAL_8250_RUNTIME_UARTS=4
# CONFIG_SERIAL_8250_EXTENDED is not set
# CONFIG_SERIAL_8250_DW is not set
# CONFIG_SERIAL_8250_RT288X is not set

#
# Non-8250 serial port support
#
# CONFIG_SERIAL_EARLYCON_ARM_SEMIHOST is not set
CONFIG_SERIAL_SA1100=y
CONFIG_SERIAL_SA1100_CONSOLE=y
# CONFIG_SERIAL_UARTLITE is not set
CONFIG_SERIAL_CORE=y
CONFIG_SERIAL_CORE_CONSOLE=y
# CONFIG_SERIAL_SCCNXP is not set
# CONFIG_SERIAL_SC16IS7XX is not set
# CONFIG_SERIAL_ALTERA_JTAGUART is not set
# CONFIG_SERIAL_ALTERA_UART is not set
# CONFIG_SERIAL_ARC is not set
# CONFIG_SERIAL_FSL_LPUART is not set
# CONFIG_SERIAL_FSL_LINFLEXUART is not set
# CONFIG_SERIAL_ST_ASC is not set
# CONFIG_SERIAL_SPRD is not set
# end of Serial drivers

CONFIG_SERIAL_MCTRL_GPIO=y
CONFIG_SERIAL_NONSTANDARD=y
# CONFIG_MOXA_INTELLIO is not set
# CONFIG_N_HDLC is not set
# CONFIG_N_GSM is not set
# CONFIG_NULL_TTY is not set
# CONFIG_HVC_DCC is not set
# CONFIG_SERIAL_DEV_BUS is not set
# CONFIG_VIRTIO_CONSOLE is not set
# CONFIG_IPMI_HANDLER is not set
CONFIG_HW_RANDOM=m
# CONFIG_HW_RANDOM_TIMERIOMEM is not set
# CONFIG_HW_RANDOM_BA431 is not set
# CONFIG_HW_RANDOM_XIPHERA is not set
# CONFIG_DTLK is not set

#
# PCMCIA character devices
#
# CONFIG_SYNCLINK_CS is not set
# CONFIG_CARDMAN_4000 is not set
# CONFIG_CARDMAN_4040 is not set
# CONFIG_SCR24X is not set
# CONFIG_IPWIRELESS is not set
# end of PCMCIA character devices

CONFIG_DEVMEM=y
CONFIG_DEVPORT=y
# CONFIG_TCG_TPM is not set
# CONFIG_XILLYUSB is not set
CONFIG_RANDOM_TRUST_CPU=y
CONFIG_RANDOM_TRUST_BOOTLOADER=y
# end of Character devices

#
# I2C support
#
CONFIG_I2C=y
CONFIG_I2C_BOARDINFO=y
CONFIG_I2C_COMPAT=y
CONFIG_I2C_CHARDEV=y
# CONFIG_I2C_MUX is not set
CONFIG_I2C_HELPER_AUTO=y

#
# I2C Hardware Bus support
#

#
# I2C system bus drivers (mostly embedded / system-on-chip)
#
# CONFIG_I2C_CBUS_GPIO is not set
# CONFIG_I2C_DESIGNWARE_PLATFORM is not set
# CONFIG_I2C_EMEV2 is not set
# CONFIG_I2C_GPIO is not set
# CONFIG_I2C_OCORES is not set
# CONFIG_I2C_PCA_PLATFORM is not set
# CONFIG_I2C_SIMTEC is not set
# CONFIG_I2C_XILINX is not set

#
# External I2C/SMBus adapter drivers
#
# CONFIG_I2C_DIOLAN_U2C is not set
# CONFIG_I2C_CP2615 is not set
# CONFIG_I2C_ROBOTFUZZ_OSIF is not set
# CONFIG_I2C_TAOS_EVM is not set
# CONFIG_I2C_TINY_USB is not set

#
# Other I2C/SMBus bus drivers
#
# CONFIG_I2C_ELEKTOR is not set
# CONFIG_I2C_PCA_ISA is not set
# CONFIG_I2C_VIRTIO is not set
# end of I2C Hardware Bus support

# CONFIG_I2C_STUB is not set
# CONFIG_I2C_SLAVE is not set
# CONFIG_I2C_DEBUG_CORE is not set
# CONFIG_I2C_DEBUG_ALGO is not set
# CONFIG_I2C_DEBUG_BUS is not set
# end of I2C support

# CONFIG_I3C is not set
# CONFIG_SPI is not set
# CONFIG_SPMI is not set
# CONFIG_HSI is not set
CONFIG_PPS=y
# CONFIG_PPS_DEBUG is not set
# CONFIG_NTP_PPS is not set

#
# PPS clients support
#
# CONFIG_PPS_CLIENT_KTIMER is not set
# CONFIG_PPS_CLIENT_LDISC is not set
# CONFIG_PPS_CLIENT_GPIO is not set

#
# PPS generators support
#

#
# PTP clock support
#
CONFIG_PTP_1588_CLOCK=y
CONFIG_PTP_1588_CLOCK_OPTIONAL=y

#
# Enable PHYLIB and NETWORK_PHY_TIMESTAMPING to see the additional clocks.
#
# CONFIG_PTP_1588_CLOCK_IDT82P33 is not set
# CONFIG_PTP_1588_CLOCK_IDTCM is not set
# end of PTP clock support

# CONFIG_PINCTRL is not set
CONFIG_ARCH_HAVE_CUSTOM_GPIO_H=y
CONFIG_GPIOLIB=y
CONFIG_GPIOLIB_FASTPATH_LIMIT=512
# CONFIG_DEBUG_GPIO is not set
CONFIG_GPIO_CDEV=y
CONFIG_GPIO_CDEV_V1=y

#
# Memory mapped GPIO drivers
#
# CONFIG_GPIO_DWAPB is not set
# CONFIG_GPIO_GENERIC_PLATFORM is not set
# CONFIG_GPIO_MB86S7X is not set
# CONFIG_GPIO_MPC8XXX is not set
CONFIG_GPIO_REG=y
# CONFIG_GPIO_AMD_FCH is not set
# end of Memory mapped GPIO drivers

#
# I2C GPIO expanders
#
# CONFIG_GPIO_MAX7300 is not set
# CONFIG_GPIO_MAX732X is not set
# CONFIG_GPIO_PCA953X is not set
# CONFIG_GPIO_PCA9570 is not set
# CONFIG_GPIO_PCF857X is not set
# CONFIG_GPIO_TPIC2810 is not set
# end of I2C GPIO expanders

#
# MFD GPIO expanders
#
# CONFIG_HTC_EGPIO is not set
# end of MFD GPIO expanders

#
# USB GPIO expanders
#
# end of USB GPIO expanders

#
# Virtual GPIO drivers
#
# CONFIG_GPIO_AGGREGATOR is not set
# CONFIG_GPIO_MOCKUP is not set
# CONFIG_GPIO_SIM is not set
# end of Virtual GPIO drivers

# CONFIG_W1 is not set
# CONFIG_POWER_RESET is not set
# CONFIG_POWER_SUPPLY is not set
CONFIG_HWMON=y
# CONFIG_HWMON_DEBUG_CHIP is not set

#
# Native drivers
#
# CONFIG_SENSORS_AD7414 is not set
# CONFIG_SENSORS_AD7418 is not set
# CONFIG_SENSORS_ADM1021 is not set
# CONFIG_SENSORS_ADM1025 is not set
# CONFIG_SENSORS_ADM1026 is not set
# CONFIG_SENSORS_ADM1029 is not set
# CONFIG_SENSORS_ADM1031 is not set
# CONFIG_SENSORS_ADM1177 is not set
# CONFIG_SENSORS_ADM9240 is not set
# CONFIG_SENSORS_ADT7410 is not set
# CONFIG_SENSORS_ADT7411 is not set
# CONFIG_SENSORS_ADT7462 is not set
# CONFIG_SENSORS_ADT7470 is not set
# CONFIG_SENSORS_ADT7475 is not set
# CONFIG_SENSORS_AHT10 is not set
# CONFIG_SENSORS_AS370 is not set
# CONFIG_SENSORS_ASC7621 is not set
# CONFIG_SENSORS_AXI_FAN_CONTROL is not set
# CONFIG_SENSORS_ATXP1 is not set
# CONFIG_SENSORS_CORSAIR_CPRO is not set
# CONFIG_SENSORS_CORSAIR_PSU is not set
# CONFIG_SENSORS_DS620 is not set
# CONFIG_SENSORS_DS1621 is not set
# CONFIG_SENSORS_F71805F is not set
# CONFIG_SENSORS_F71882FG is not set
# CONFIG_SENSORS_F75375S is not set
# CONFIG_SENSORS_FTSTEUTATES is not set
# CONFIG_SENSORS_GL518SM is not set
# CONFIG_SENSORS_GL520SM is not set
# CONFIG_SENSORS_G760A is not set
# CONFIG_SENSORS_G762 is not set
# CONFIG_SENSORS_HIH6130 is not set
# CONFIG_SENSORS_IT87 is not set
# CONFIG_SENSORS_JC42 is not set
# CONFIG_SENSORS_POWR1220 is not set
# CONFIG_SENSORS_LINEAGE is not set
# CONFIG_SENSORS_LTC2945 is not set
# CONFIG_SENSORS_LTC2947_I2C is not set
# CONFIG_SENSORS_LTC2990 is not set
# CONFIG_SENSORS_LTC2992 is not set
# CONFIG_SENSORS_LTC4151 is not set
# CONFIG_SENSORS_LTC4215 is not set
# CONFIG_SENSORS_LTC4222 is not set
# CONFIG_SENSORS_LTC4245 is not set
# CONFIG_SENSORS_LTC4260 is not set
# CONFIG_SENSORS_LTC4261 is not set
# CONFIG_SENSORS_MAX127 is not set
# CONFIG_SENSORS_MAX16065 is not set
# CONFIG_SENSORS_MAX1619 is not set
# CONFIG_SENSORS_MAX1668 is not set
# CONFIG_SENSORS_MAX197 is not set
# CONFIG_SENSORS_MAX31730 is not set
# CONFIG_SENSORS_MAX31760 is not set
# CONFIG_SENSORS_MAX6620 is not set
# CONFIG_SENSORS_MAX6621 is not set
# CONFIG_SENSORS_MAX6639 is not set
# CONFIG_SENSORS_MAX6642 is not set
# CONFIG_SENSORS_MAX6650 is not set
# CONFIG_SENSORS_MAX6697 is not set
# CONFIG_SENSORS_MAX31790 is not set
# CONFIG_SENSORS_MCP3021 is not set
# CONFIG_SENSORS_TC654 is not set
# CONFIG_SENSORS_TPS23861 is not set
# CONFIG_SENSORS_MR75203 is not set
# CONFIG_SENSORS_LM63 is not set
# CONFIG_SENSORS_LM73 is not set
# CONFIG_SENSORS_LM75 is not set
# CONFIG_SENSORS_LM77 is not set
# CONFIG_SENSORS_LM78 is not set
# CONFIG_SENSORS_LM80 is not set
# CONFIG_SENSORS_LM83 is not set
# CONFIG_SENSORS_LM85 is not set
# CONFIG_SENSORS_LM87 is not set
# CONFIG_SENSORS_LM90 is not set
# CONFIG_SENSORS_LM92 is not set
# CONFIG_SENSORS_LM93 is not set
# CONFIG_SENSORS_LM95234 is not set
# CONFIG_SENSORS_LM95241 is not set
# CONFIG_SENSORS_LM95245 is not set
# CONFIG_SENSORS_PC87360 is not set
# CONFIG_SENSORS_PC87427 is not set
# CONFIG_SENSORS_NCT6683 is not set
# CONFIG_SENSORS_NCT6775 is not set
# CONFIG_SENSORS_NCT6775_I2C is not set
# CONFIG_SENSORS_NCT7802 is not set
# CONFIG_SENSORS_NCT7904 is not set
# CONFIG_SENSORS_NPCM7XX is not set
# CONFIG_SENSORS_OCC_P8_I2C is not set
# CONFIG_SENSORS_PCF8591 is not set
# CONFIG_PMBUS is not set
# CONFIG_SENSORS_SBTSI is not set
# CONFIG_SENSORS_SBRMI is not set
# CONFIG_SENSORS_SHT15 is not set
# CONFIG_SENSORS_SHT21 is not set
# CONFIG_SENSORS_SHT3x is not set
# CONFIG_SENSORS_SHT4x is not set
# CONFIG_SENSORS_SHTC1 is not set
# CONFIG_SENSORS_DME1737 is not set
# CONFIG_SENSORS_EMC1403 is not set
# CONFIG_SENSORS_EMC2103 is not set
# CONFIG_SENSORS_EMC2305 is not set
# CONFIG_SENSORS_EMC6W201 is not set
# CONFIG_SENSORS_SMSC47M1 is not set
# CONFIG_SENSORS_SMSC47M192 is not set
# CONFIG_SENSORS_SMSC47B397 is not set
# CONFIG_SENSORS_SCH5627 is not set
# CONFIG_SENSORS_SCH5636 is not set
# CONFIG_SENSORS_STTS751 is not set
# CONFIG_SENSORS_SMM665 is not set
# CONFIG_SENSORS_ADC128D818 is not set
# CONFIG_SENSORS_ADS7828 is not set
# CONFIG_SENSORS_AMC6821 is not set
# CONFIG_SENSORS_INA209 is not set
# CONFIG_SENSORS_INA2XX is not set
# CONFIG_SENSORS_INA238 is not set
# CONFIG_SENSORS_INA3221 is not set
# CONFIG_SENSORS_TC74 is not set
# CONFIG_SENSORS_THMC50 is not set
# CONFIG_SENSORS_TMP102 is not set
# CONFIG_SENSORS_TMP103 is not set
# CONFIG_SENSORS_TMP108 is not set
# CONFIG_SENSORS_TMP401 is not set
# CONFIG_SENSORS_TMP421 is not set
# CONFIG_SENSORS_TMP464 is not set
# CONFIG_SENSORS_TMP513 is not set
# CONFIG_SENSORS_VT1211 is not set
# CONFIG_SENSORS_W83773G is not set
# CONFIG_SENSORS_W83781D is not set
# CONFIG_SENSORS_W83791D is not set
# CONFIG_SENSORS_W83792D is not set
# CONFIG_SENSORS_W83793 is not set
# CONFIG_SENSORS_W83795 is not set
# CONFIG_SENSORS_W83L785TS is not set
# CONFIG_SENSORS_W83L786NG is not set
# CONFIG_SENSORS_W83627HF is not set
# CONFIG_SENSORS_W83627EHF is not set
# CONFIG_THERMAL is not set
CONFIG_WATCHDOG=y
# CONFIG_WATCHDOG_CORE is not set
# CONFIG_WATCHDOG_NOWAYOUT is not set
CONFIG_WATCHDOG_HANDLE_BOOT_ENABLED=y
CONFIG_WATCHDOG_OPEN_TIMEOUT=0
# CONFIG_WATCHDOG_SYSFS is not set
# CONFIG_WATCHDOG_HRTIMER_PRETIMEOUT is not set

#
# Watchdog Pretimeout Governors
#

#
# Watchdog Device Drivers
#
# CONFIG_SOFT_WATCHDOG is not set
# CONFIG_XILINX_WATCHDOG is not set
# CONFIG_ZIIRAVE_WATCHDOG is not set
# CONFIG_CADENCE_WATCHDOG is not set
# CONFIG_FTWDT010_WATCHDOG is not set
CONFIG_SA1100_WATCHDOG=m
# CONFIG_DW_WATCHDOG is not set
# CONFIG_MAX63XX_WATCHDOG is not set
# CONFIG_MEN_A21_WDT is not set

#
# ISA-based Watchdog Cards
#
# CONFIG_PCWATCHDOG is not set
# CONFIG_MIXCOMWD is not set
# CONFIG_WDT is not set

#
# USB-based Watchdog Cards
#
# CONFIG_USBPCWATCHDOG is not set
CONFIG_SSB_POSSIBLE=y
# CONFIG_SSB is not set
CONFIG_BCMA_POSSIBLE=y
# CONFIG_BCMA is not set

#
# Multifunction device drivers
#
# CONFIG_MFD_AS3711 is not set
# CONFIG_PMIC_ADP5520 is not set
# CONFIG_MFD_AAT2870_CORE is not set
# CONFIG_MFD_BCM590XX is not set
# CONFIG_MFD_BD9571MWV is not set
# CONFIG_MFD_AXP20X_I2C is not set
# CONFIG_MFD_MADERA is not set
# CONFIG_MFD_ASIC3 is not set
# CONFIG_PMIC_DA903X is not set
# CONFIG_MFD_DA9052_I2C is not set
# CONFIG_MFD_DA9055 is not set
# CONFIG_MFD_DA9062 is not set
# CONFIG_MFD_DA9063 is not set
# CONFIG_MFD_DA9150 is not set
# CONFIG_MFD_DLN2 is not set
# CONFIG_MFD_MC13XXX_I2C is not set
# CONFIG_MFD_MP2629 is not set
# CONFIG_HTC_PASIC3 is not set
# CONFIG_HTC_I2CPLD is not set
# CONFIG_MFD_IQS62X is not set
# CONFIG_MFD_KEMPLD is not set
# CONFIG_MFD_88PM800 is not set
# CONFIG_MFD_88PM805 is not set
# CONFIG_MFD_88PM860X is not set
# CONFIG_MFD_MAX14577 is not set
# CONFIG_MFD_MAX77693 is not set
# CONFIG_MFD_MAX77843 is not set
# CONFIG_MFD_MAX8907 is not set
# CONFIG_MFD_MAX8925 is not set
# CONFIG_MFD_MAX8997 is not set
# CONFIG_MFD_MAX8998 is not set
# CONFIG_MFD_MT6360 is not set
# CONFIG_MFD_MT6370 is not set
# CONFIG_MFD_MT6397 is not set
# CONFIG_MFD_MENF21BMC is not set
# CONFIG_MFD_VIPERBOARD is not set
# CONFIG_MFD_RETU is not set
# CONFIG_MFD_PCF50633 is not set
# CONFIG_MFD_PM8XXX is not set
# CONFIG_MFD_SY7636A is not set
# CONFIG_MFD_RT4831 is not set
# CONFIG_MFD_RT5033 is not set
# CONFIG_MFD_RT5120 is not set
# CONFIG_MFD_RC5T583 is not set
# CONFIG_MFD_SI476X_CORE is not set
# CONFIG_MFD_SM501 is not set
# CONFIG_MFD_SKY81452 is not set
# CONFIG_MFD_SYSCON is not set
# CONFIG_MFD_TI_AM335X_TSCADC is not set
# CONFIG_MFD_LP3943 is not set
# CONFIG_MFD_LP8788 is not set
# CONFIG_MFD_TI_LMU is not set
# CONFIG_MFD_PALMAS is not set
# CONFIG_TPS6105X is not set
# CONFIG_TPS65010 is not set
# CONFIG_TPS6507X is not set
# CONFIG_MFD_TPS65086 is not set
# CONFIG_MFD_TPS65090 is not set
# CONFIG_MFD_TI_LP873X is not set
# CONFIG_MFD_TPS6586X is not set
# CONFIG_MFD_TPS65910 is not set
# CONFIG_MFD_TPS65912_I2C is not set
# CONFIG_TWL4030_CORE is not set
# CONFIG_TWL6040_CORE is not set
# CONFIG_MFD_WL1273_CORE is not set
# CONFIG_MFD_LM3533 is not set
# CONFIG_MFD_T7L66XB is not set
# CONFIG_MFD_TC6387XB is not set
# CONFIG_MFD_TC6393XB is not set
# CONFIG_MFD_TQMX86 is not set
# CONFIG_MFD_ARIZONA_I2C is not set
# CONFIG_MFD_WM8400 is not set
# CONFIG_MFD_WM831X_I2C is not set
# CONFIG_MFD_WM8350_I2C is not set
# CONFIG_MFD_WM8994 is not set
# CONFIG_MFD_ATC260X_I2C is not set

#
# Multimedia Capabilities Port drivers
#
# CONFIG_MCP_SA11X0 is not set
# end of Multimedia Capabilities Port drivers
# end of Multifunction device drivers

CONFIG_REGULATOR=y
# CONFIG_REGULATOR_DEBUG is not set
CONFIG_REGULATOR_FIXED_VOLTAGE=y
# CONFIG_REGULATOR_VIRTUAL_CONSUMER is not set
# CONFIG_REGULATOR_USERSPACE_CONSUMER is not set
# CONFIG_REGULATOR_88PG86X is not set
# CONFIG_REGULATOR_AD5398 is not set
# CONFIG_REGULATOR_DA9210 is not set
# CONFIG_REGULATOR_DA9211 is not set
# CONFIG_REGULATOR_FAN53555 is not set
# CONFIG_REGULATOR_GPIO is not set
# CONFIG_REGULATOR_ISL9305 is not set
# CONFIG_REGULATOR_ISL6271A is not set
# CONFIG_REGULATOR_LP3971 is not set
# CONFIG_REGULATOR_LP3972 is not set
# CONFIG_REGULATOR_LP872X is not set
# CONFIG_REGULATOR_LP8755 is not set
# CONFIG_REGULATOR_LTC3589 is not set
# CONFIG_REGULATOR_LTC3676 is not set
# CONFIG_REGULATOR_MAX1586 is not set
# CONFIG_REGULATOR_MAX8649 is not set
# CONFIG_REGULATOR_MAX8660 is not set
# CONFIG_REGULATOR_MAX8893 is not set
# CONFIG_REGULATOR_MAX8952 is not set
# CONFIG_REGULATOR_MAX20086 is not set
# CONFIG_REGULATOR_MAX77826 is not set
# CONFIG_REGULATOR_MP8859 is not set
# CONFIG_REGULATOR_MT6311 is not set
# CONFIG_REGULATOR_PCA9450 is not set
# CONFIG_REGULATOR_PV88060 is not set
# CONFIG_REGULATOR_PV88080 is not set
# CONFIG_REGULATOR_PV88090 is not set
# CONFIG_REGULATOR_RT4801 is not set
# CONFIG_REGULATOR_RT5190A is not set
# CONFIG_REGULATOR_RT5759 is not set
# CONFIG_REGULATOR_RT6160 is not set
# CONFIG_REGULATOR_RT6245 is not set
# CONFIG_REGULATOR_RTQ2134 is not set
# CONFIG_REGULATOR_RTMV20 is not set
# CONFIG_REGULATOR_RTQ6752 is not set
# CONFIG_REGULATOR_SLG51000 is not set
# CONFIG_REGULATOR_TPS51632 is not set
# CONFIG_REGULATOR_TPS62360 is not set
# CONFIG_REGULATOR_TPS65023 is not set
# CONFIG_REGULATOR_TPS6507X is not set
# CONFIG_REGULATOR_TPS65132 is not set
# CONFIG_RC_CORE is not set

#
# CEC support
#
# CONFIG_MEDIA_CEC_SUPPORT is not set
# end of CEC support

# CONFIG_MEDIA_SUPPORT is not set

#
# Graphics support
#
# CONFIG_DRM is not set

#
# ARM devices
#
# end of ARM devices

#
# Frame buffer Devices
#
CONFIG_FB_CMDLINE=y
CONFIG_FB_NOTIFY=y
CONFIG_FB=y
# CONFIG_FIRMWARE_EDID is not set
CONFIG_FB_CFB_FILLRECT=y
CONFIG_FB_CFB_COPYAREA=y
CONFIG_FB_CFB_IMAGEBLIT=y
# CONFIG_FB_FOREIGN_ENDIAN is not set
# CONFIG_FB_MODE_HELPERS is not set
# CONFIG_FB_TILEBLITTING is not set

#
# Frame buffer hardware drivers
#
CONFIG_FB_SA1100=y
# CONFIG_FB_OPENCORES is not set
# CONFIG_FB_S1D13XXX is not set
# CONFIG_FB_SMSCUFX is not set
# CONFIG_FB_UDL is not set
# CONFIG_FB_IBM_GXT4500 is not set
# CONFIG_FB_VIRTUAL is not set
# CONFIG_FB_METRONOME is not set
# CONFIG_FB_SIMPLE is not set
# CONFIG_FB_SSD1307 is not set
# end of Frame buffer Devices

#
# Backlight & LCD device support
#
# CONFIG_LCD_CLASS_DEVICE is not set
# CONFIG_BACKLIGHT_CLASS_DEVICE is not set
# end of Backlight & LCD device support

#
# Console display driver support
#
# CONFIG_MDA_CONSOLE is not set
CONFIG_DUMMY_CONSOLE=y
CONFIG_FRAMEBUFFER_CONSOLE=y
# CONFIG_FRAMEBUFFER_CONSOLE_LEGACY_ACCELERATION is not set
# CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY is not set
# CONFIG_FRAMEBUFFER_CONSOLE_ROTATION is not set
# CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER is not set
# end of Console display driver support

# CONFIG_LOGO is not set
# end of Graphics support

CONFIG_SOUND=y
# CONFIG_SND is not set

#
# HID support
#
CONFIG_HID=y
# CONFIG_HID_BATTERY_STRENGTH is not set
# CONFIG_HIDRAW is not set
# CONFIG_UHID is not set
CONFIG_HID_GENERIC=y

#
# Special HID drivers
#
CONFIG_HID_A4TECH=y
# CONFIG_HID_ACRUX is not set
CONFIG_HID_APPLE=y
# CONFIG_HID_AUREAL is not set
CONFIG_HID_BELKIN=y
CONFIG_HID_CHERRY=y
# CONFIG_HID_COUGAR is not set
# CONFIG_HID_MACALLY is not set
# CONFIG_HID_CMEDIA is not set
CONFIG_HID_CYPRESS=y
# CONFIG_HID_DRAGONRISE is not set
# CONFIG_HID_EMS_FF is not set
# CONFIG_HID_ELECOM is not set
CONFIG_HID_EZKEY=y
# CONFIG_HID_GEMBIRD is not set
# CONFIG_HID_GFRM is not set
# CONFIG_HID_GLORIOUS is not set
# CONFIG_HID_VIVALDI is not set
# CONFIG_HID_KEYTOUCH is not set
# CONFIG_HID_KYE is not set
# CONFIG_HID_WALTOP is not set
# CONFIG_HID_VIEWSONIC is not set
# CONFIG_HID_VRC2 is not set
# CONFIG_HID_XIAOMI is not set
# CONFIG_HID_GYRATION is not set
# CONFIG_HID_ICADE is not set
CONFIG_HID_ITE=y
# CONFIG_HID_JABRA is not set
# CONFIG_HID_TWINHAN is not set
CONFIG_HID_KENSINGTON=y
# CONFIG_HID_LCPOWER is not set
# CONFIG_HID_LED is not set
# CONFIG_HID_LENOVO is not set
# CONFIG_HID_MAGICMOUSE is not set
# CONFIG_HID_MALTRON is not set
# CONFIG_HID_MAYFLASH is not set
CONFIG_HID_REDRAGON=y
CONFIG_HID_MICROSOFT=y
CONFIG_HID_MONTEREY=y
# CONFIG_HID_MULTITOUCH is not set
# CONFIG_HID_NINTENDO is not set
# CONFIG_HID_NTI is not set
# CONFIG_HID_ORTEK is not set
# CONFIG_HID_PANTHERLORD is not set
# CONFIG_HID_PETALYNX is not set
# CONFIG_HID_PICOLCD is not set
# CONFIG_HID_PLANTRONICS is not set
# CONFIG_HID_PXRC is not set
# CONFIG_HID_RAZER is not set
# CONFIG_HID_PRIMAX is not set
# CONFIG_HID_SAITEK is not set
# CONFIG_HID_SEMITEK is not set
# CONFIG_HID_SPEEDLINK is not set
# CONFIG_HID_STEAM is not set
# CONFIG_HID_STEELSERIES is not set
# CONFIG_HID_SUNPLUS is not set
# CONFIG_HID_RMI is not set
# CONFIG_HID_GREENASIA is not set
# CONFIG_HID_SMARTJOYPLUS is not set
# CONFIG_HID_TIVO is not set
# CONFIG_HID_TOPSEED is not set
# CONFIG_HID_TOPRE is not set
# CONFIG_HID_THINGM is not set
# CONFIG_HID_UDRAW_PS3 is not set
# CONFIG_HID_WIIMOTE is not set
# CONFIG_HID_XINMO is not set
# CONFIG_HID_ZEROPLUS is not set
# CONFIG_HID_ZYDACRON is not set
# CONFIG_HID_SENSOR_HUB is not set
# CONFIG_HID_ALPS is not set
# end of Special HID drivers

#
# USB HID support
#
# CONFIG_USB_HID is not set
# CONFIG_HID_PID is not set
# end of USB HID support

#
# I2C HID support
#
# end of I2C HID support
# end of HID support

CONFIG_USB_OHCI_LITTLE_ENDIAN=y
CONFIG_USB_SUPPORT=y
CONFIG_USB_COMMON=m
# CONFIG_USB_LED_TRIG is not set
# CONFIG_USB_ULPI_BUS is not set
# CONFIG_USB_CONN_GPIO is not set
CONFIG_USB_ARCH_HAS_HCD=y
CONFIG_USB=m
# CONFIG_USB_ANNOUNCE_NEW_DEVICES is not set

#
# Miscellaneous USB options
#
CONFIG_USB_DEFAULT_PERSIST=y
# CONFIG_USB_FEW_INIT_RETRIES is not set
# CONFIG_USB_DYNAMIC_MINORS is not set
# CONFIG_USB_OTG is not set
# CONFIG_USB_OTG_PRODUCTLIST is not set
# CONFIG_USB_LEDS_TRIGGER_USBPORT is not set
CONFIG_USB_AUTOSUSPEND_DELAY=2
CONFIG_USB_MON=m

#
# USB Host Controller Drivers
#
# CONFIG_USB_C67X00_HCD is not set
# CONFIG_USB_XHCI_HCD is not set
# CONFIG_USB_EHCI_HCD is not set
# CONFIG_USB_OXU210HP_HCD is not set
# CONFIG_USB_ISP116X_HCD is not set
# CONFIG_USB_FOTG210_HCD is not set
CONFIG_USB_OHCI_HCD=m
# CONFIG_USB_OHCI_HCD_PLATFORM is not set
# CONFIG_USB_SL811_HCD is not set
# CONFIG_USB_R8A66597_HCD is not set
# CONFIG_USB_HCD_TEST_MODE is not set

#
# USB Device Class drivers
#
# CONFIG_USB_ACM is not set
# CONFIG_USB_PRINTER is not set
# CONFIG_USB_WDM is not set
# CONFIG_USB_TMC is not set

#
# NOTE: USB_STORAGE depends on SCSI but BLK_DEV_SD may
#

#
# also be needed; see USB_STORAGE Help for more info
#
CONFIG_USB_STORAGE=m
# CONFIG_USB_STORAGE_DEBUG is not set
# CONFIG_USB_STORAGE_REALTEK is not set
# CONFIG_USB_STORAGE_DATAFAB is not set
# CONFIG_USB_STORAGE_FREECOM is not set
# CONFIG_USB_STORAGE_ISD200 is not set
# CONFIG_USB_STORAGE_USBAT is not set
# CONFIG_USB_STORAGE_SDDR09 is not set
# CONFIG_USB_STORAGE_SDDR55 is not set
# CONFIG_USB_STORAGE_JUMPSHOT is not set
# CONFIG_USB_STORAGE_ALAUDA is not set
# CONFIG_USB_STORAGE_ONETOUCH is not set
# CONFIG_USB_STORAGE_KARMA is not set
# CONFIG_USB_STORAGE_CYPRESS_ATACB is not set
# CONFIG_USB_STORAGE_ENE_UB6250 is not set
# CONFIG_USB_UAS is not set

#
# USB Imaging devices
#
# CONFIG_USB_MDC800 is not set
# CONFIG_USB_MICROTEK is not set
# CONFIG_USBIP_CORE is not set
# CONFIG_USB_CDNS_SUPPORT is not set
# CONFIG_USB_MUSB_HDRC is not set
# CONFIG_USB_DWC3 is not set
# CONFIG_USB_DWC2 is not set
# CONFIG_USB_ISP1760 is not set

#
# USB port drivers
#
# CONFIG_USB_SERIAL is not set

#
# USB Miscellaneous drivers
#
# CONFIG_USB_EMI62 is not set
# CONFIG_USB_EMI26 is not set
# CONFIG_USB_ADUTUX is not set
# CONFIG_USB_SEVSEG is not set
# CONFIG_USB_LEGOTOWER is not set
# CONFIG_USB_LCD is not set
# CONFIG_USB_CYPRESS_CY7C63 is not set
# CONFIG_USB_CYTHERM is not set
# CONFIG_USB_IDMOUSE is not set
# CONFIG_USB_FTDI_ELAN is not set
# CONFIG_USB_APPLEDISPLAY is not set
# CONFIG_APPLE_MFI_FASTCHARGE is not set
# CONFIG_USB_LD is not set
# CONFIG_USB_TRANCEVIBRATOR is not set
# CONFIG_USB_IOWARRIOR is not set
# CONFIG_USB_TEST is not set
# CONFIG_USB_EHSET_TEST_FIXTURE is not set
# CONFIG_USB_ISIGHTFW is not set
# CONFIG_USB_YUREX is not set
# CONFIG_USB_EZUSB_FX2 is not set
# CONFIG_USB_HUB_USB251XB is not set
# CONFIG_USB_HSIC_USB3503 is not set
# CONFIG_USB_HSIC_USB4604 is not set
# CONFIG_USB_LINK_LAYER_TEST is not set
# CONFIG_USB_CHAOSKEY is not set

#
# USB Physical Layer drivers
#
# CONFIG_NOP_USB_XCEIV is not set
# CONFIG_USB_GPIO_VBUS is not set
# CONFIG_USB_ISP1301 is not set
# CONFIG_USB_ULPI is not set
# end of USB Physical Layer drivers

# CONFIG_USB_GADGET is not set
# CONFIG_TYPEC is not set
# CONFIG_USB_ROLE_SWITCH is not set
# CONFIG_MMC is not set
# CONFIG_SCSI_UFSHCD is not set
# CONFIG_MEMSTICK is not set
CONFIG_LEDS_GPIO_REGISTER=y
CONFIG_NEW_LEDS=y
CONFIG_LEDS_CLASS=y
# CONFIG_LEDS_CLASS_FLASH is not set
# CONFIG_LEDS_CLASS_MULTICOLOR is not set
# CONFIG_LEDS_BRIGHTNESS_HW_CHANGED is not set

#
# LED drivers
#
# CONFIG_LEDS_LM3530 is not set
# CONFIG_LEDS_LM3532 is not set
# CONFIG_LEDS_LM3642 is not set
# CONFIG_LEDS_PCA9532 is not set
# CONFIG_LEDS_GPIO is not set
# CONFIG_LEDS_LP3944 is not set
# CONFIG_LEDS_LP3952 is not set
# CONFIG_LEDS_PCA955X is not set
# CONFIG_LEDS_PCA963X is not set
# CONFIG_LEDS_REGULATOR is not set
# CONFIG_LEDS_BD2802 is not set
# CONFIG_LEDS_LT3593 is not set
# CONFIG_LEDS_TCA6507 is not set
# CONFIG_LEDS_TLC591XX is not set
# CONFIG_LEDS_LM355x is not set
# CONFIG_LEDS_IS31FL319X is not set

#
# LED driver for blink(1) USB RGB LED is under Special HID drivers (HID_THINGM)
#
# CONFIG_LEDS_BLINKM is not set
# CONFIG_LEDS_MLXREG is not set
# CONFIG_LEDS_USER is not set

#
# Flash and Torch LED drivers
#

#
# RGB LED drivers
#

#
# LED Triggers
#
CONFIG_LEDS_TRIGGERS=y
# CONFIG_LEDS_TRIGGER_TIMER is not set
# CONFIG_LEDS_TRIGGER_ONESHOT is not set
# CONFIG_LEDS_TRIGGER_MTD is not set
# CONFIG_LEDS_TRIGGER_HEARTBEAT is not set
# CONFIG_LEDS_TRIGGER_BACKLIGHT is not set
CONFIG_LEDS_TRIGGER_CPU=y
# CONFIG_LEDS_TRIGGER_ACTIVITY is not set
# CONFIG_LEDS_TRIGGER_GPIO is not set
# CONFIG_LEDS_TRIGGER_DEFAULT_ON is not set

#
# iptables trigger is under Netfilter config (LED target)
#
# CONFIG_LEDS_TRIGGER_TRANSIENT is not set
# CONFIG_LEDS_TRIGGER_CAMERA is not set
# CONFIG_LEDS_TRIGGER_PANIC is not set
# CONFIG_LEDS_TRIGGER_NETDEV is not set
# CONFIG_LEDS_TRIGGER_PATTERN is not set
# CONFIG_LEDS_TRIGGER_AUDIO is not set
# CONFIG_LEDS_TRIGGER_TTY is not set

#
# Simple LED drivers
#
# CONFIG_ACCESSIBILITY is not set
# CONFIG_INFINIBAND is not set
CONFIG_EDAC_ATOMIC_SCRUB=y
CONFIG_EDAC_SUPPORT=y
CONFIG_RTC_LIB=y
# CONFIG_RTC_CLASS is not set
# CONFIG_DMADEVICES is not set

#
# DMABUF options
#
# CONFIG_SYNC_FILE is not set
# CONFIG_DMABUF_HEAPS is not set
# end of DMABUF options

# CONFIG_AUXDISPLAY is not set
# CONFIG_UIO is not set
# CONFIG_VFIO is not set
# CONFIG_VIRT_DRIVERS is not set
CONFIG_VIRTIO_MENU=y
# CONFIG_VIRTIO_MMIO is not set
# CONFIG_VDPA is not set
CONFIG_VHOST_MENU=y
# CONFIG_VHOST_NET is not set
# CONFIG_VHOST_CROSS_ENDIAN_LEGACY is not set

#
# Microsoft Hyper-V guest support
#
# end of Microsoft Hyper-V guest support

# CONFIG_GREYBUS is not set
# CONFIG_COMEDI is not set
# CONFIG_STAGING is not set
# CONFIG_GOLDFISH is not set
# CONFIG_CHROME_PLATFORMS is not set
# CONFIG_MELLANOX_PLATFORM is not set
CONFIG_HAVE_CLK=y
CONFIG_HAVE_CLK_PREPARE=y
CONFIG_COMMON_CLK=y

#
# Clock driver for ARM Reference designs
#
# CONFIG_CLK_ICST is not set
# CONFIG_CLK_SP810 is not set
# end of Clock driver for ARM Reference designs

# CONFIG_COMMON_CLK_MAX9485 is not set
# CONFIG_COMMON_CLK_SI5341 is not set
# CONFIG_COMMON_CLK_SI5351 is not set
# CONFIG_COMMON_CLK_SI544 is not set
# CONFIG_COMMON_CLK_CDCE706 is not set
# CONFIG_COMMON_CLK_CS2000_CP is not set
# CONFIG_XILINX_VCU is not set
# CONFIG_HWSPINLOCK is not set

#
# Clock Source drivers
#
CONFIG_CLKSRC_MMIO=y
CONFIG_CLKSRC_PXA=y
# end of Clock Source drivers

# CONFIG_MAILBOX is not set
CONFIG_IOMMU_SUPPORT=y

#
# Generic IOMMU Pagetable Support
#
# CONFIG_IOMMU_IO_PGTABLE_LPAE is not set
# CONFIG_IOMMU_IO_PGTABLE_ARMV7S is not set
# end of Generic IOMMU Pagetable Support

# CONFIG_ARM_SMMU is not set

#
# Remoteproc drivers
#
# CONFIG_REMOTEPROC is not set
# end of Remoteproc drivers

#
# Rpmsg drivers
#
# CONFIG_RPMSG_VIRTIO is not set
# end of Rpmsg drivers

#
# SOC (System On Chip) specific Drivers
#

#
# Amlogic SoC drivers
#
# end of Amlogic SoC drivers

#
# Broadcom SoC drivers
#
# CONFIG_SOC_BRCMSTB is not set
# end of Broadcom SoC drivers

#
# NXP/Freescale QorIQ SoC drivers
#
# CONFIG_FSL_RCPM is not set
# end of NXP/Freescale QorIQ SoC drivers

#
# fujitsu SoC drivers
#
# end of fujitsu SoC drivers

#
# i.MX SoC drivers
#
# end of i.MX SoC drivers

#
# Enable LiteX SoC Builder specific drivers
#
# end of Enable LiteX SoC Builder specific drivers

#
# Qualcomm SoC drivers
#
# end of Qualcomm SoC drivers

# CONFIG_SOC_TI is not set

#
# Xilinx SoC drivers
#
# end of Xilinx SoC drivers
# end of SOC (System On Chip) specific Drivers

# CONFIG_PM_DEVFREQ is not set
# CONFIG_EXTCON is not set
# CONFIG_MEMORY is not set
# CONFIG_IIO is not set
# CONFIG_PWM is not set

#
# IRQ chip support
#
# end of IRQ chip support

# CONFIG_IPACK_BUS is not set
# CONFIG_RESET_CONTROLLER is not set

#
# PHY Subsystem
#
# CONFIG_GENERIC_PHY is not set
# CONFIG_PHY_CAN_TRANSCEIVER is not set

#
# PHY drivers for Broadcom platforms
#
# CONFIG_BCM_KONA_USB2_PHY is not set
# end of PHY drivers for Broadcom platforms

# CONFIG_PHY_PXA_28NM_HSIC is not set
# CONFIG_PHY_PXA_28NM_USB2 is not set
# end of PHY Subsystem

# CONFIG_POWERCAP is not set
# CONFIG_MCB is not set
# CONFIG_RAS is not set

#
# Android
#
# CONFIG_ANDROID_BINDER_IPC is not set
# end of Android

# CONFIG_DAX is not set
CONFIG_NVMEM=y
CONFIG_NVMEM_SYSFS=y
# CONFIG_NVMEM_RMEM is not set

#
# HW tracing support
#
# CONFIG_STM is not set
# CONFIG_INTEL_TH is not set
# end of HW tracing support

# CONFIG_FPGA is not set
# CONFIG_SIOX is not set
# CONFIG_SLIMBUS is not set
# CONFIG_INTERCONNECT is not set
# CONFIG_COUNTER is not set
# CONFIG_PECI is not set
# CONFIG_HTE is not set
# end of Device Drivers

#
# File systems
#
# CONFIG_VALIDATE_FS_PARSER is not set
CONFIG_FS_IOMAP=y
CONFIG_EXT2_FS=y
# CONFIG_EXT2_FS_XATTR is not set
# CONFIG_EXT3_FS is not set
# CONFIG_EXT4_FS is not set
# CONFIG_REISERFS_FS is not set
# CONFIG_JFS_FS is not set
# CONFIG_XFS_FS is not set
# CONFIG_GFS2_FS is not set
# CONFIG_BTRFS_FS is not set
# CONFIG_NILFS2_FS is not set
# CONFIG_F2FS_FS is not set
CONFIG_EXPORTFS=y
# CONFIG_EXPORTFS_BLOCK_OPS is not set
CONFIG_FILE_LOCKING=y
# CONFIG_FS_ENCRYPTION is not set
# CONFIG_FS_VERITY is not set
CONFIG_FSNOTIFY=y
CONFIG_DNOTIFY=y
CONFIG_INOTIFY_USER=y
# CONFIG_FANOTIFY is not set
# CONFIG_QUOTA is not set
# CONFIG_AUTOFS4_FS is not set
# CONFIG_AUTOFS_FS is not set
# CONFIG_FUSE_FS is not set
# CONFIG_OVERLAY_FS is not set

#
# Caches
#
# CONFIG_FSCACHE is not set
# end of Caches

#
# CD-ROM/DVD Filesystems
#
# CONFIG_ISO9660_FS is not set
# CONFIG_UDF_FS is not set
# end of CD-ROM/DVD Filesystems

#
# DOS/FAT/EXFAT/NT Filesystems
#
CONFIG_FAT_FS=m
CONFIG_MSDOS_FS=m
CONFIG_VFAT_FS=m
CONFIG_FAT_DEFAULT_CODEPAGE=437
CONFIG_FAT_DEFAULT_IOCHARSET="iso8859-1"
# CONFIG_FAT_DEFAULT_UTF8 is not set
# CONFIG_EXFAT_FS is not set
# CONFIG_NTFS_FS is not set
# CONFIG_NTFS3_FS is not set
# end of DOS/FAT/EXFAT/NT Filesystems

#
# Pseudo filesystems
#
CONFIG_PROC_FS=y
CONFIG_PROC_SYSCTL=y
CONFIG_PROC_PAGE_MONITOR=y
# CONFIG_PROC_CHILDREN is not set
CONFIG_KERNFS=y
CONFIG_SYSFS=y
# CONFIG_TMPFS is not set
# CONFIG_CONFIGFS_FS is not set
# end of Pseudo filesystems

CONFIG_MISC_FILESYSTEMS=y
# CONFIG_ORANGEFS_FS is not set
# CONFIG_ADFS_FS is not set
# CONFIG_AFFS_FS is not set
# CONFIG_HFS_FS is not set
# CONFIG_HFSPLUS_FS is not set
# CONFIG_BEFS_FS is not set
# CONFIG_BFS_FS is not set
# CONFIG_EFS_FS is not set
CONFIG_JFFS2_FS=y
CONFIG_JFFS2_FS_DEBUG=0
CONFIG_JFFS2_FS_WRITEBUFFER=y
# CONFIG_JFFS2_FS_WBUF_VERIFY is not set
# CONFIG_JFFS2_SUMMARY is not set
# CONFIG_JFFS2_FS_XATTR is not set
# CONFIG_JFFS2_COMPRESSION_OPTIONS is not set
CONFIG_JFFS2_ZLIB=y
CONFIG_JFFS2_RTIME=y
# CONFIG_CRAMFS is not set
# CONFIG_SQUASHFS is not set
# CONFIG_VXFS_FS is not set
# CONFIG_MINIX_FS is not set
# CONFIG_OMFS_FS is not set
# CONFIG_HPFS_FS is not set
# CONFIG_QNX4FS_FS is not set
# CONFIG_QNX6FS_FS is not set
# CONFIG_ROMFS_FS is not set
# CONFIG_PSTORE is not set
# CONFIG_SYSV_FS is not set
# CONFIG_UFS_FS is not set
# CONFIG_EROFS_FS is not set
CONFIG_NETWORK_FILESYSTEMS=y
CONFIG_NFS_FS=y
CONFIG_NFS_V2=y
CONFIG_NFS_V3=y
# CONFIG_NFS_V3_ACL is not set
# CONFIG_NFS_V4 is not set
# CONFIG_NFS_SWAP is not set
CONFIG_NFS_DISABLE_UDP_SUPPORT=y
# CONFIG_NFSD is not set
CONFIG_GRACE_PERIOD=y
CONFIG_LOCKD=y
CONFIG_LOCKD_V4=y
CONFIG_NFS_COMMON=y
CONFIG_SUNRPC=y
# CONFIG_SUNRPC_DEBUG is not set
# CONFIG_CEPH_FS is not set
# CONFIG_CIFS is not set
# CONFIG_SMB_SERVER is not set
# CONFIG_CODA_FS is not set
# CONFIG_AFS_FS is not set
CONFIG_NLS=y
CONFIG_NLS_DEFAULT="iso8859-1"
CONFIG_NLS_CODEPAGE_437=m
# CONFIG_NLS_CODEPAGE_737 is not set
# CONFIG_NLS_CODEPAGE_775 is not set
# CONFIG_NLS_CODEPAGE_850 is not set
# CONFIG_NLS_CODEPAGE_852 is not set
# CONFIG_NLS_CODEPAGE_855 is not set
# CONFIG_NLS_CODEPAGE_857 is not set
# CONFIG_NLS_CODEPAGE_860 is not set
# CONFIG_NLS_CODEPAGE_861 is not set
# CONFIG_NLS_CODEPAGE_862 is not set
# CONFIG_NLS_CODEPAGE_863 is not set
# CONFIG_NLS_CODEPAGE_864 is not set
# CONFIG_NLS_CODEPAGE_865 is not set
# CONFIG_NLS_CODEPAGE_866 is not set
# CONFIG_NLS_CODEPAGE_869 is not set
# CONFIG_NLS_CODEPAGE_936 is not set
# CONFIG_NLS_CODEPAGE_950 is not set
# CONFIG_NLS_CODEPAGE_932 is not set
# CONFIG_NLS_CODEPAGE_949 is not set
# CONFIG_NLS_CODEPAGE_874 is not set
# CONFIG_NLS_ISO8859_8 is not set
# CONFIG_NLS_CODEPAGE_1250 is not set
# CONFIG_NLS_CODEPAGE_1251 is not set
# CONFIG_NLS_ASCII is not set
CONFIG_NLS_ISO8859_1=m
# CONFIG_NLS_ISO8859_2 is not set
# CONFIG_NLS_ISO8859_3 is not set
# CONFIG_NLS_ISO8859_4 is not set
# CONFIG_NLS_ISO8859_5 is not set
# CONFIG_NLS_ISO8859_6 is not set
# CONFIG_NLS_ISO8859_7 is not set
# CONFIG_NLS_ISO8859_9 is not set
# CONFIG_NLS_ISO8859_13 is not set
# CONFIG_NLS_ISO8859_14 is not set
# CONFIG_NLS_ISO8859_15 is not set
# CONFIG_NLS_KOI8_R is not set
# CONFIG_NLS_KOI8_U is not set
# CONFIG_NLS_MAC_ROMAN is not set
# CONFIG_NLS_MAC_CELTIC is not set
# CONFIG_NLS_MAC_CENTEURO is not set
# CONFIG_NLS_MAC_CROATIAN is not set
# CONFIG_NLS_MAC_CYRILLIC is not set
# CONFIG_NLS_MAC_GAELIC is not set
# CONFIG_NLS_MAC_GREEK is not set
# CONFIG_NLS_MAC_ICELAND is not set
# CONFIG_NLS_MAC_INUIT is not set
# CONFIG_NLS_MAC_ROMANIAN is not set
# CONFIG_NLS_MAC_TURKISH is not set
# CONFIG_NLS_UTF8 is not set
# CONFIG_UNICODE is not set
CONFIG_IO_WQ=y
# end of File systems

#
# Security options
#
# CONFIG_KEYS is not set
# CONFIG_SECURITY_DMESG_RESTRICT is not set
# CONFIG_SECURITY is not set
# CONFIG_SECURITYFS is not set
CONFIG_HAVE_HARDENED_USERCOPY_ALLOCATOR=y
# CONFIG_HARDENED_USERCOPY is not set
# CONFIG_FORTIFY_SOURCE is not set
# CONFIG_STATIC_USERMODEHELPER is not set
CONFIG_DEFAULT_SECURITY_DAC=y
CONFIG_LSM="landlock,lockdown,yama,loadpin,safesetid,integrity,bpf"

#
# Kernel hardening options
#

#
# Memory initialization
#
CONFIG_CC_HAS_AUTO_VAR_INIT_PATTERN=y
CONFIG_CC_HAS_AUTO_VAR_INIT_ZERO_BARE=y
CONFIG_CC_HAS_AUTO_VAR_INIT_ZERO=y
# CONFIG_INIT_STACK_NONE is not set
# CONFIG_INIT_STACK_ALL_PATTERN is not set
CONFIG_INIT_STACK_ALL_ZERO=y
# CONFIG_INIT_ON_ALLOC_DEFAULT_ON is not set
# CONFIG_INIT_ON_FREE_DEFAULT_ON is not set
# end of Memory initialization

CONFIG_CC_HAS_RANDSTRUCT=y
CONFIG_RANDSTRUCT_NONE=y
# CONFIG_RANDSTRUCT_FULL is not set
# end of Kernel hardening options
# end of Security options

# CONFIG_CRYPTO is not set

#
# Library routines
#
CONFIG_LINEAR_RANGES=y
# CONFIG_PACKING is not set
CONFIG_BITREVERSE=y
CONFIG_GENERIC_STRNCPY_FROM_USER=y
CONFIG_GENERIC_STRNLEN_USER=y
CONFIG_GENERIC_NET_UTILS=y
# CONFIG_CORDIC is not set
# CONFIG_PRIME_NUMBERS is not set
CONFIG_RATIONAL=y
CONFIG_GENERIC_PCI_IOMAP=y
CONFIG_ARCH_USE_CMPXCHG_LOCKREF=y

#
# Crypto library routines
#
CONFIG_CRYPTO_LIB_BLAKE2S_GENERIC=y
# CONFIG_CRYPTO_LIB_CHACHA is not set
# CONFIG_CRYPTO_LIB_CURVE25519 is not set
CONFIG_CRYPTO_LIB_POLY1305_RSIZE=9
# CONFIG_CRYPTO_LIB_POLY1305 is not set
CONFIG_CRYPTO_LIB_SHA1=y
# end of Crypto library routines

# CONFIG_CRC_CCITT is not set
# CONFIG_CRC16 is not set
# CONFIG_CRC_T10DIF is not set
# CONFIG_CRC64_ROCKSOFT is not set
# CONFIG_CRC_ITU_T is not set
CONFIG_CRC32=y
# CONFIG_CRC32_SELFTEST is not set
CONFIG_CRC32_SLICEBY8=y
# CONFIG_CRC32_SLICEBY4 is not set
# CONFIG_CRC32_SARWATE is not set
# CONFIG_CRC32_BIT is not set
# CONFIG_CRC64 is not set
# CONFIG_CRC4 is not set
# CONFIG_CRC7 is not set
# CONFIG_LIBCRC32C is not set
# CONFIG_CRC8 is not set
CONFIG_XXHASH=y
# CONFIG_RANDOM32_SELFTEST is not set
CONFIG_ZLIB_INFLATE=y
CONFIG_ZLIB_DEFLATE=y
CONFIG_LZO_DECOMPRESS=y
CONFIG_LZ4_DECOMPRESS=y
CONFIG_ZSTD_COMMON=y
CONFIG_ZSTD_DECOMPRESS=y
CONFIG_XZ_DEC=y
CONFIG_XZ_DEC_X86=y
CONFIG_XZ_DEC_POWERPC=y
CONFIG_XZ_DEC_IA64=y
CONFIG_XZ_DEC_ARM=y
CONFIG_XZ_DEC_ARMTHUMB=y
CONFIG_XZ_DEC_SPARC=y
# CONFIG_XZ_DEC_MICROLZMA is not set
CONFIG_XZ_DEC_BCJ=y
# CONFIG_XZ_DEC_TEST is not set
CONFIG_DECOMPRESS_GZIP=y
CONFIG_DECOMPRESS_BZIP2=y
CONFIG_DECOMPRESS_LZMA=y
CONFIG_DECOMPRESS_XZ=y
CONFIG_DECOMPRESS_LZO=y
CONFIG_DECOMPRESS_LZ4=y
CONFIG_DECOMPRESS_ZSTD=y
CONFIG_GENERIC_ALLOCATOR=y
CONFIG_HAS_IOMEM=y
CONFIG_HAS_IOPORT_MAP=y
CONFIG_HAS_DMA=y
CONFIG_DMA_OPS=y
CONFIG_NEED_DMA_MAP_STATE=y
CONFIG_ARCH_HAS_DMA_WRITE_COMBINE=y
CONFIG_DMA_DECLARE_COHERENT=y
CONFIG_ARCH_HAS_SETUP_DMA_OPS=y
CONFIG_ARCH_HAS_TEARDOWN_DMA_OPS=y
CONFIG_ARCH_HAS_SYNC_DMA_FOR_DEVICE=y
CONFIG_ARCH_HAS_SYNC_DMA_FOR_CPU=y
CONFIG_DMA_NONCOHERENT_MMAP=y
# CONFIG_DMA_API_DEBUG is not set
CONFIG_DQL=y
CONFIG_NLATTR=y
CONFIG_GENERIC_ATOMIC64=y
# CONFIG_IRQ_POLL is not set
CONFIG_FONT_SUPPORT=y
# CONFIG_FONTS is not set
CONFIG_FONT_8x8=y
CONFIG_FONT_8x16=y
CONFIG_SG_POOL=y
CONFIG_ARCH_NO_SG_CHAIN=y
CONFIG_STACKDEPOT=y
CONFIG_SBITMAP=y
# end of Library routines

CONFIG_GENERIC_LIB_DEVMEM_IS_ALLOWED=y

#
# Kernel hacking
#

#
# printk and dmesg options
#
# CONFIG_PRINTK_TIME is not set
# CONFIG_PRINTK_CALLER is not set
# CONFIG_STACKTRACE_BUILD_ID is not set
CONFIG_CONSOLE_LOGLEVEL_DEFAULT=7
CONFIG_CONSOLE_LOGLEVEL_QUIET=4
CONFIG_MESSAGE_LOGLEVEL_DEFAULT=4
# CONFIG_BOOT_PRINTK_DELAY is not set
# CONFIG_DYNAMIC_DEBUG is not set
# CONFIG_DYNAMIC_DEBUG_CORE is not set
CONFIG_SYMBOLIC_ERRNAME=y
CONFIG_DEBUG_BUGVERBOSE=y
# end of printk and dmesg options

CONFIG_DEBUG_KERNEL=y
CONFIG_DEBUG_MISC=y

#
# Compile-time checks and compiler options
#
CONFIG_AS_HAS_NON_CONST_LEB128=y
CONFIG_DEBUG_INFO_NONE=y
# CONFIG_DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT is not set
# CONFIG_DEBUG_INFO_DWARF4 is not set
# CONFIG_DEBUG_INFO_DWARF5 is not set
CONFIG_FRAME_WARN=1024
# CONFIG_STRIP_ASM_SYMS is not set
# CONFIG_HEADERS_INSTALL is not set
CONFIG_SECTION_MISMATCH_WARN_ONLY=y
# CONFIG_DEBUG_FORCE_WEAK_PER_CPU is not set
# end of Compile-time checks and compiler options

#
# Generic Kernel Debugging Instruments
#
CONFIG_MAGIC_SYSRQ=y
CONFIG_MAGIC_SYSRQ_DEFAULT_ENABLE=0x1
CONFIG_MAGIC_SYSRQ_SERIAL=y
CONFIG_MAGIC_SYSRQ_SERIAL_SEQUENCE=""
# CONFIG_DEBUG_FS is not set
CONFIG_HAVE_ARCH_KGDB=y
# CONFIG_KGDB is not set
# CONFIG_UBSAN is not set
# end of Generic Kernel Debugging Instruments

#
# Networking Debugging
#
# CONFIG_NET_DEV_REFCNT_TRACKER is not set
# CONFIG_NET_NS_REFCNT_TRACKER is not set
# CONFIG_DEBUG_NET is not set
# end of Networking Debugging

#
# Memory Debugging
#
# CONFIG_PAGE_EXTENSION is not set
# CONFIG_DEBUG_PAGEALLOC is not set
CONFIG_SLUB_DEBUG=y
# CONFIG_SLUB_DEBUG_ON is not set
# CONFIG_PAGE_OWNER is not set
# CONFIG_PAGE_POISONING is not set
# CONFIG_DEBUG_WX is not set
# CONFIG_DEBUG_OBJECTS is not set
CONFIG_HAVE_DEBUG_KMEMLEAK=y
# CONFIG_DEBUG_KMEMLEAK is not set
# CONFIG_DEBUG_STACK_USAGE is not set
# CONFIG_SCHED_STACK_END_CHECK is not set
# CONFIG_DEBUG_VM is not set
CONFIG_ARCH_HAS_DEBUG_VIRTUAL=y
# CONFIG_DEBUG_VIRTUAL is not set
CONFIG_DEBUG_MEMORY_INIT=y
CONFIG_HAVE_ARCH_KASAN=y
CONFIG_HAVE_ARCH_KASAN_VMALLOC=y
CONFIG_CC_HAS_KASAN_GENERIC=y
CONFIG_CC_HAS_WORKING_NOSANITIZE_ADDRESS=y
# CONFIG_KASAN is not set
CONFIG_HAVE_ARCH_KFENCE=y
# CONFIG_KFENCE is not set
# end of Memory Debugging

# CONFIG_DEBUG_SHIRQ is not set

#
# Debug Oops, Lockups and Hangs
#
# CONFIG_PANIC_ON_OOPS is not set
CONFIG_PANIC_ON_OOPS_VALUE=0
CONFIG_PANIC_TIMEOUT=0
# CONFIG_SOFTLOCKUP_DETECTOR is not set
# CONFIG_DETECT_HUNG_TASK is not set
# CONFIG_WQ_WATCHDOG is not set
# CONFIG_TEST_LOCKUP is not set
# end of Debug Oops, Lockups and Hangs

#
# Scheduler Debugging
#
CONFIG_SCHED_DEBUG=y
# CONFIG_SCHEDSTATS is not set
# end of Scheduler Debugging

# CONFIG_DEBUG_TIMEKEEPING is not set

#
# Lock Debugging (spinlocks, mutexes, etc...)
#
CONFIG_LOCK_DEBUGGING_SUPPORT=y
# CONFIG_PROVE_LOCKING is not set
# CONFIG_LOCK_STAT is not set
# CONFIG_DEBUG_RT_MUTEXES is not set
# CONFIG_DEBUG_SPINLOCK is not set
# CONFIG_DEBUG_MUTEXES is not set
# CONFIG_DEBUG_WW_MUTEX_SLOWPATH is not set
# CONFIG_DEBUG_RWSEMS is not set
# CONFIG_DEBUG_LOCK_ALLOC is not set
# CONFIG_DEBUG_ATOMIC_SLEEP is not set
# CONFIG_DEBUG_LOCKING_API_SELFTESTS is not set
# CONFIG_LOCK_TORTURE_TEST is not set
# CONFIG_WW_MUTEX_SELFTEST is not set
# CONFIG_SCF_TORTURE_TEST is not set
# end of Lock Debugging (spinlocks, mutexes, etc...)

# CONFIG_DEBUG_IRQFLAGS is not set
CONFIG_STACKTRACE=y
# CONFIG_WARN_ALL_UNSEEDED_RANDOM is not set
# CONFIG_DEBUG_KOBJECT is not set

#
# Debug kernel data structures
#
# CONFIG_DEBUG_LIST is not set
# CONFIG_DEBUG_PLIST is not set
# CONFIG_DEBUG_SG is not set
# CONFIG_DEBUG_NOTIFIERS is not set
# CONFIG_BUG_ON_DATA_CORRUPTION is not set
# CONFIG_DEBUG_MAPLE_TREE is not set
# end of Debug kernel data structures

# CONFIG_DEBUG_CREDENTIALS is not set

#
# RCU Debugging
#
# CONFIG_RCU_SCALE_TEST is not set
# CONFIG_RCU_TORTURE_TEST is not set
# CONFIG_RCU_REF_SCALE_TEST is not set
# CONFIG_RCU_TRACE is not set
# CONFIG_RCU_EQS_DEBUG is not set
# end of RCU Debugging

# CONFIG_DEBUG_WQ_FORCE_RR_CPU is not set
# CONFIG_LATENCYTOP is not set
CONFIG_HAVE_FUNCTION_TRACER=y
CONFIG_HAVE_FUNCTION_GRAPH_TRACER=y
CONFIG_HAVE_DYNAMIC_FTRACE=y
CONFIG_HAVE_DYNAMIC_FTRACE_WITH_REGS=y
CONFIG_HAVE_FTRACE_MCOUNT_RECORD=y
CONFIG_HAVE_SYSCALL_TRACEPOINTS=y
CONFIG_HAVE_C_RECORDMCOUNT=y
CONFIG_HAVE_BUILDTIME_MCOUNT_SORT=y
CONFIG_TRACING_SUPPORT=y
CONFIG_FTRACE=y
# CONFIG_FUNCTION_TRACER is not set
# CONFIG_STACK_TRACER is not set
# CONFIG_IRQSOFF_TRACER is not set
# CONFIG_SCHED_TRACER is not set
# CONFIG_HWLAT_TRACER is not set
# CONFIG_OSNOISE_TRACER is not set
# CONFIG_TIMERLAT_TRACER is not set
# CONFIG_ENABLE_DEFAULT_TRACERS is not set
# CONFIG_FTRACE_SYSCALLS is not set
# CONFIG_TRACER_SNAPSHOT is not set
CONFIG_BRANCH_PROFILE_NONE=y
# CONFIG_PROFILE_ANNOTATED_BRANCHES is not set
# CONFIG_PROFILE_ALL_BRANCHES is not set
# CONFIG_BLK_DEV_IO_TRACE is not set
# CONFIG_SYNTH_EVENTS is not set
# CONFIG_TRACEPOINT_BENCHMARK is not set
# CONFIG_PREEMPTIRQ_DELAY_TEST is not set
# CONFIG_SAMPLES is not set
# CONFIG_STRICT_DEVMEM is not set

#
# arm Debugging
#
# CONFIG_ARM_PTDUMP_DEBUGFS is not set
# CONFIG_UNWINDER_FRAME_POINTER is not set
CONFIG_UNWINDER_ARM=y
CONFIG_ARM_UNWIND=y
CONFIG_DEBUG_USER=y
CONFIG_DEBUG_LL=y
CONFIG_DEBUG_SA1100=y
# CONFIG_DEBUG_ICEDCC is not set
# CONFIG_DEBUG_SEMIHOSTING is not set
# CONFIG_DEBUG_LL_UART_8250 is not set
# CONFIG_DEBUG_LL_UART_PL01X is not set
# CONFIG_DEBUG_UART_FLOW_CONTROL is not set
CONFIG_DEBUG_LL_INCLUDE="debug/sa1100.S"
CONFIG_UNCOMPRESS_INCLUDE="mach/uncompress.h"
# CONFIG_EARLY_PRINTK is not set
# end of arm Debugging

#
# Kernel Testing and Coverage
#
# CONFIG_KUNIT is not set
# CONFIG_NOTIFIER_ERROR_INJECTION is not set
# CONFIG_FAULT_INJECTION is not set
CONFIG_ARCH_HAS_KCOV=y
CONFIG_CC_HAS_SANCOV_TRACE_PC=y
# CONFIG_KCOV is not set
CONFIG_RUNTIME_TESTING_MENU=y
# CONFIG_TEST_MIN_HEAP is not set
# CONFIG_TEST_DIV64 is not set
# CONFIG_BACKTRACE_SELF_TEST is not set
# CONFIG_TEST_REF_TRACKER is not set
# CONFIG_RBTREE_TEST is not set
# CONFIG_REED_SOLOMON_TEST is not set
# CONFIG_INTERVAL_TREE_TEST is not set
# CONFIG_PERCPU_TEST is not set
# CONFIG_ATOMIC64_SELFTEST is not set
# CONFIG_TEST_HEXDUMP is not set
# CONFIG_STRING_SELFTEST is not set
# CONFIG_TEST_STRING_HELPERS is not set
# CONFIG_TEST_STRSCPY is not set
# CONFIG_TEST_KSTRTOX is not set
# CONFIG_TEST_PRINTF is not set
# CONFIG_TEST_SCANF is not set
# CONFIG_TEST_BITMAP is not set
# CONFIG_TEST_UUID is not set
# CONFIG_TEST_XARRAY is not set
# CONFIG_TEST_RHASHTABLE is not set
# CONFIG_TEST_SIPHASH is not set
# CONFIG_TEST_IDA is not set
# CONFIG_TEST_LKM is not set
# CONFIG_TEST_BITOPS is not set
# CONFIG_TEST_VMALLOC is not set
# CONFIG_TEST_USER_COPY is not set
# CONFIG_TEST_BPF is not set
# CONFIG_TEST_BLACKHOLE_DEV is not set
# CONFIG_FIND_BIT_BENCHMARK is not set
# CONFIG_TEST_FIRMWARE is not set
# CONFIG_TEST_SYSCTL is not set
# CONFIG_TEST_UDELAY is not set
# CONFIG_TEST_STATIC_KEYS is not set
# CONFIG_TEST_KMOD is not set
# CONFIG_TEST_MEMCAT_P is not set
# CONFIG_TEST_MEMINIT is not set
# CONFIG_TEST_FREE_PAGES is not set
CONFIG_ARCH_USE_MEMTEST=y
# CONFIG_MEMTEST is not set
# end of Kernel Testing and Coverage

#
# Rust hacking
#
# end of Rust hacking
# end of Kernel hacking

Re: [PATCH bpf-next v2 3/8] bpf: Abstract out functions to check sleepable helpers

[kernel test robot]

[-- Attachment #1: Type: text/plain, Size: 18486 bytes --]

Hi Yonghong,

I love your patch! Yet something to improve:

[auto build test ERROR on bpf-next/master]

url:    https://github.com/intel-lab-lkp/linux/commits/Yonghong-Song/bpf-Add-bpf_rcu_read_lock-support/20221108-155529
base:   https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master
patch link:    https://lore.kernel.org/r/20221108074104.263145-1-yhs%40fb.com
patch subject: [PATCH bpf-next v2 3/8] bpf: Abstract out functions to check sleepable helpers
config: arm-neponset_defconfig
compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 463da45892e2d2a262277b91b96f5f8c05dc25d0)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # install arm cross compiling tool for clang build
        # apt-get install binutils-arm-linux-gnueabi
        # https://github.com/intel-lab-lkp/linux/commit/97528bc3a813d7e2b950063b7a1912672bcae1e7
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Yonghong-Song/bpf-Add-bpf_rcu_read_lock-support/20221108-155529
        git checkout 97528bc3a813d7e2b950063b7a1912672bcae1e7
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   In file included from init/main.c:21:
   In file included from include/linux/syscalls.h:88:
   In file included from include/trace/syscall.h:7:
>> include/linux/trace_events.h:801:51: error: variable has incomplete type 'enum bpf_func_id'
   bpf_tracing_sleepable_func_proto(enum bpf_func_id func_id)
                                                     ^
   include/linux/trace_events.h:20:6: note: forward declaration of 'enum bpf_func_id'
   enum bpf_func_id;
        ^
   init/main.c:772:20: warning: no previous prototype for function 'arch_post_acpi_subsys_init' [-Wmissing-prototypes]
   void __init __weak arch_post_acpi_subsys_init(void) { }
                      ^
   init/main.c:772:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void __init __weak arch_post_acpi_subsys_init(void) { }
   ^
   static 
   init/main.c:784:20: warning: no previous prototype for function 'mem_encrypt_init' [-Wmissing-prototypes]
   void __init __weak mem_encrypt_init(void) { }
                      ^
   init/main.c:784:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void __init __weak mem_encrypt_init(void) { }
   ^
   static 
   init/main.c:786:20: warning: no previous prototype for function 'poking_init' [-Wmissing-prototypes]
   void __init __weak poking_init(void) { }
                      ^
   init/main.c:786:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void __init __weak poking_init(void) { }
   ^
   static 
   3 warnings and 1 error generated.
--
   In file included from init/do_mounts.c:28:
   In file included from init/do_mounts.h:5:
   In file included from include/linux/syscalls.h:88:
   In file included from include/trace/syscall.h:7:
>> include/linux/trace_events.h:801:51: error: variable has incomplete type 'enum bpf_func_id'
   bpf_tracing_sleepable_func_proto(enum bpf_func_id func_id)
                                                     ^
   include/linux/trace_events.h:20:6: note: forward declaration of 'enum bpf_func_id'
   enum bpf_func_id;
        ^
   1 error generated.
--
   In file included from kernel/fork.c:55:
   In file included from include/linux/syscalls.h:88:
   In file included from include/trace/syscall.h:7:
>> include/linux/trace_events.h:801:51: error: variable has incomplete type 'enum bpf_func_id'
   bpf_tracing_sleepable_func_proto(enum bpf_func_id func_id)
                                                     ^
   include/linux/trace_events.h:20:6: note: forward declaration of 'enum bpf_func_id'
   enum bpf_func_id;
        ^
   kernel/fork.c:162:13: warning: no previous prototype for function 'arch_release_task_struct' [-Wmissing-prototypes]
   void __weak arch_release_task_struct(struct task_struct *tsk)
               ^
   kernel/fork.c:162:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void __weak arch_release_task_struct(struct task_struct *tsk)
   ^
   static 
   kernel/fork.c:849:20: warning: no previous prototype for function 'arch_task_cache_init' [-Wmissing-prototypes]
   void __init __weak arch_task_cache_init(void) { }
                      ^
   kernel/fork.c:849:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void __init __weak arch_task_cache_init(void) { }
   ^
   static 
   kernel/fork.c:944:12: warning: no previous prototype for function 'arch_dup_task_struct' [-Wmissing-prototypes]
   int __weak arch_dup_task_struct(struct task_struct *dst,
              ^
   kernel/fork.c:944:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   int __weak arch_dup_task_struct(struct task_struct *dst,
   ^
   static 
   3 warnings and 1 error generated.
--
   In file included from kernel/signal.c:30:
   In file included from include/linux/syscalls.h:88:
   In file included from include/trace/syscall.h:7:
>> include/linux/trace_events.h:801:51: error: variable has incomplete type 'enum bpf_func_id'
   bpf_tracing_sleepable_func_proto(enum bpf_func_id func_id)
                                                     ^
   include/linux/trace_events.h:20:6: note: forward declaration of 'enum bpf_func_id'
   enum bpf_func_id;
        ^
   kernel/signal.c:137:37: warning: array index 3 is past the end of the array (that has type 'unsigned long[2]') [-Warray-bounds]
           case 4: ready  = signal->sig[3] &~ blocked->sig[3];
                                              ^            ~
   arch/arm/include/asm/signal.h:17:2: note: array 'sig' declared here
           unsigned long sig[_NSIG_WORDS];
           ^
   kernel/signal.c:137:19: warning: array index 3 is past the end of the array (that has type 'unsigned long[2]') [-Warray-bounds]
           case 4: ready  = signal->sig[3] &~ blocked->sig[3];
                            ^           ~
   arch/arm/include/asm/signal.h:17:2: note: array 'sig' declared here
           unsigned long sig[_NSIG_WORDS];
           ^
   kernel/signal.c:138:30: warning: array index 2 is past the end of the array (that has type 'unsigned long[2]') [-Warray-bounds]
                   ready |= signal->sig[2] &~ blocked->sig[2];
                                              ^            ~
   arch/arm/include/asm/signal.h:17:2: note: array 'sig' declared here
           unsigned long sig[_NSIG_WORDS];
           ^
   kernel/signal.c:138:12: warning: array index 2 is past the end of the array (that has type 'unsigned long[2]') [-Warray-bounds]
                   ready |= signal->sig[2] &~ blocked->sig[2];
                            ^           ~
   arch/arm/include/asm/signal.h:17:2: note: array 'sig' declared here
           unsigned long sig[_NSIG_WORDS];
           ^
   4 warnings and 1 error generated.
--
   In file included from arch/arm/kernel/signal.c:14:
   In file included from include/linux/syscalls.h:88:
   In file included from include/trace/syscall.h:7:
>> include/linux/trace_events.h:801:51: error: variable has incomplete type 'enum bpf_func_id'
   bpf_tracing_sleepable_func_proto(enum bpf_func_id func_id)
                                                     ^
   include/linux/trace_events.h:20:6: note: forward declaration of 'enum bpf_func_id'
   enum bpf_func_id;
        ^
   arch/arm/kernel/signal.c:142:15: warning: variable 'aux' set but not used [-Wunused-but-set-variable]
           char __user *aux;
                        ^
   arch/arm/kernel/signal.c:186:16: warning: no previous prototype for function 'sys_sigreturn' [-Wmissing-prototypes]
   asmlinkage int sys_sigreturn(struct pt_regs *regs)
                  ^
   arch/arm/kernel/signal.c:186:12: note: declare 'static' if the function is not intended to be used outside of this translation unit
   asmlinkage int sys_sigreturn(struct pt_regs *regs)
              ^
              static 
   arch/arm/kernel/signal.c:216:16: warning: no previous prototype for function 'sys_rt_sigreturn' [-Wmissing-prototypes]
   asmlinkage int sys_rt_sigreturn(struct pt_regs *regs)
                  ^
   arch/arm/kernel/signal.c:216:12: note: declare 'static' if the function is not intended to be used outside of this translation unit
   asmlinkage int sys_rt_sigreturn(struct pt_regs *regs)
              ^
              static 
   arch/arm/kernel/signal.c:601:1: warning: no previous prototype for function 'do_work_pending' [-Wmissing-prototypes]
   do_work_pending(struct pt_regs *regs, unsigned int thread_flags, int syscall)
   ^
   arch/arm/kernel/signal.c:600:12: note: declare 'static' if the function is not intended to be used outside of this translation unit
   asmlinkage int
              ^
              static 
   4 warnings and 1 error generated.
--
   In file included from arch/arm/kernel/sys_arm.c:20:
   In file included from include/linux/syscalls.h:88:
   In file included from include/trace/syscall.h:7:
>> include/linux/trace_events.h:801:51: error: variable has incomplete type 'enum bpf_func_id'
   bpf_tracing_sleepable_func_proto(enum bpf_func_id func_id)
                                                     ^
   include/linux/trace_events.h:20:6: note: forward declaration of 'enum bpf_func_id'
   enum bpf_func_id;
        ^
   In file included from arch/arm/kernel/sys_arm.c:21:
   include/linux/mman.h:154:9: warning: division by zero is undefined [-Wdivision-by-zero]
                  _calc_vm_trans(flags, MAP_SYNC,       VM_SYNC      ) |
                  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/mman.h:132:21: note: expanded from macro '_calc_vm_trans'
      : ((x) & (bit1)) / ((bit1) / (bit2))))
                       ^ ~~~~~~~~~~~~~~~~~
   arch/arm/kernel/sys_arm.c:32:17: warning: no previous prototype for function 'sys_arm_fadvise64_64' [-Wmissing-prototypes]
   asmlinkage long sys_arm_fadvise64_64(int fd, int advice,
                   ^
   arch/arm/kernel/sys_arm.c:32:12: note: declare 'static' if the function is not intended to be used outside of this translation unit
   asmlinkage long sys_arm_fadvise64_64(int fd, int advice,
              ^
              static 
   2 warnings and 1 error generated.
--
   In file included from fs/pipe.c:24:
   In file included from include/linux/syscalls.h:88:
   In file included from include/trace/syscall.h:7:
>> include/linux/trace_events.h:801:51: error: variable has incomplete type 'enum bpf_func_id'
   bpf_tracing_sleepable_func_proto(enum bpf_func_id func_id)
                                                     ^
   include/linux/trace_events.h:20:6: note: forward declaration of 'enum bpf_func_id'
   enum bpf_func_id;
        ^
   fs/pipe.c:757:15: warning: no previous prototype for function 'account_pipe_buffers' [-Wmissing-prototypes]
   unsigned long account_pipe_buffers(struct user_struct *user,
                 ^
   fs/pipe.c:757:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   unsigned long account_pipe_buffers(struct user_struct *user,
   ^
   static 
   fs/pipe.c:763:6: warning: no previous prototype for function 'too_many_pipe_buffers_soft' [-Wmissing-prototypes]
   bool too_many_pipe_buffers_soft(unsigned long user_bufs)
        ^
   fs/pipe.c:763:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   bool too_many_pipe_buffers_soft(unsigned long user_bufs)
   ^
   static 
   fs/pipe.c:770:6: warning: no previous prototype for function 'too_many_pipe_buffers_hard' [-Wmissing-prototypes]
   bool too_many_pipe_buffers_hard(unsigned long user_bufs)
        ^
   fs/pipe.c:770:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   bool too_many_pipe_buffers_hard(unsigned long user_bufs)
   ^
   static 
   fs/pipe.c:777:6: warning: no previous prototype for function 'pipe_is_unprivileged_user' [-Wmissing-prototypes]
   bool pipe_is_unprivileged_user(void)
        ^
   fs/pipe.c:777:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   bool pipe_is_unprivileged_user(void)
   ^
   static 
   fs/pipe.c:1253:5: warning: no previous prototype for function 'pipe_resize_ring' [-Wmissing-prototypes]
   int pipe_resize_ring(struct pipe_inode_info *pipe, unsigned int nr_slots)
       ^
   fs/pipe.c:1253:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   int pipe_resize_ring(struct pipe_inode_info *pipe, unsigned int nr_slots)
   ^
   static 
   5 warnings and 1 error generated.
--
   In file included from fs/d_path.c:2:
   In file included from include/linux/syscalls.h:88:
   In file included from include/trace/syscall.h:7:
>> include/linux/trace_events.h:801:51: error: variable has incomplete type 'enum bpf_func_id'
   bpf_tracing_sleepable_func_proto(enum bpf_func_id func_id)
                                                     ^
   include/linux/trace_events.h:20:6: note: forward declaration of 'enum bpf_func_id'
   enum bpf_func_id;
        ^
   fs/d_path.c:317:7: warning: no previous prototype for function 'simple_dname' [-Wmissing-prototypes]
   char *simple_dname(struct dentry *dentry, char *buffer, int buflen)
         ^
   fs/d_path.c:317:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   char *simple_dname(struct dentry *dentry, char *buffer, int buflen)
   ^
   static 
   1 warning and 1 error generated.
--
   In file included from fs/statfs.c:2:
   In file included from include/linux/syscalls.h:88:
   In file included from include/trace/syscall.h:7:
>> include/linux/trace_events.h:801:51: error: variable has incomplete type 'enum bpf_func_id'
   bpf_tracing_sleepable_func_proto(enum bpf_func_id func_id)
                                                     ^
   include/linux/trace_events.h:20:6: note: forward declaration of 'enum bpf_func_id'
   enum bpf_func_id;
        ^
   fs/statfs.c:131:3: warning: 'memcpy' will always overflow; destination buffer has size 64, but size argument is 88 [-Wfortify-source]
                   memcpy(&buf, st, sizeof(*st));
                   ^
   fs/statfs.c:172:3: warning: 'memcpy' will always overflow; destination buffer has size 84, but size argument is 88 [-Wfortify-source]
                   memcpy(&buf, st, sizeof(*st));
                   ^
   2 warnings and 1 error generated.
--
   In file included from fs/aio.c:20:
   In file included from include/linux/syscalls.h:88:
   In file included from include/trace/syscall.h:7:
>> include/linux/trace_events.h:801:51: error: variable has incomplete type 'enum bpf_func_id'
   bpf_tracing_sleepable_func_proto(enum bpf_func_id func_id)
                                                     ^
   include/linux/trace_events.h:20:6: note: forward declaration of 'enum bpf_func_id'
   enum bpf_func_id;
        ^
   In file included from fs/aio.c:29:
   include/linux/mman.h:154:9: warning: division by zero is undefined [-Wdivision-by-zero]
                  _calc_vm_trans(flags, MAP_SYNC,       VM_SYNC      ) |
                  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/mman.h:132:21: note: expanded from macro '_calc_vm_trans'
      : ((x) & (bit1)) / ((bit1) / (bit2))))
                       ^ ~~~~~~~~~~~~~~~~~
   1 warning and 1 error generated.
--
   In file included from ipc/msg.c:35:
   In file included from include/linux/syscalls.h:88:
   In file included from include/trace/syscall.h:7:
>> include/linux/trace_events.h:801:51: error: variable has incomplete type 'enum bpf_func_id'
   bpf_tracing_sleepable_func_proto(enum bpf_func_id func_id)
                                                     ^
   include/linux/trace_events.h:20:6: note: forward declaration of 'enum bpf_func_id'
   enum bpf_func_id;
        ^
   ipc/msg.c:497:20: warning: implicit conversion from 'int' to 'unsigned short' changes value from 32768000 to 0 [-Wconstant-conversion]
           msginfo->msgseg = MSGSEG;
                           ~ ^~~~~~
   include/uapi/linux/msg.h:87:38: note: expanded from macro 'MSGSEG'
   #define MSGSEG (__MSGSEG <= 0xffff ? __MSGSEG : 0xffff)
                                        ^~~~~~~~
   include/uapi/linux/msg.h:86:36: note: expanded from macro '__MSGSEG'
   #define __MSGSEG ((MSGPOOL * 1024) / MSGSSZ) /* max no. of segments */
                     ~~~~~~~~~~~~~~~~~^~~~~~~~
   1 warning and 1 error generated.
..


vim +801 include/linux/trace_events.h

   767	
   768	static inline int
   769	perf_event_query_prog_array(struct perf_event *event, void __user *info)
   770	{
   771		return -EOPNOTSUPP;
   772	}
   773	static inline int bpf_probe_register(struct bpf_raw_event_map *btp, struct bpf_prog *p)
   774	{
   775		return -EOPNOTSUPP;
   776	}
   777	static inline int bpf_probe_unregister(struct bpf_raw_event_map *btp, struct bpf_prog *p)
   778	{
   779		return -EOPNOTSUPP;
   780	}
   781	static inline struct bpf_raw_event_map *bpf_get_raw_tracepoint(const char *name)
   782	{
   783		return NULL;
   784	}
   785	static inline void bpf_put_raw_tracepoint(struct bpf_raw_event_map *btp)
   786	{
   787	}
   788	static inline int bpf_get_perf_event_info(const struct perf_event *event,
   789						  u32 *prog_id, u32 *fd_type,
   790						  const char **buf, u64 *probe_offset,
   791						  u64 *probe_addr)
   792	{
   793		return -EOPNOTSUPP;
   794	}
   795	static inline int
   796	bpf_kprobe_multi_link_attach(const union bpf_attr *attr, struct bpf_prog *prog)
   797	{
   798		return -EOPNOTSUPP;
   799	}
   800	static inline const struct bpf_func_proto *
 > 801	bpf_tracing_sleepable_func_proto(enum bpf_func_id func_id)
   802	{
   803		return NULL;
   804	}
   805	#endif
   806	

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp

[-- Attachment #2: config --]
[-- Type: text/plain, Size: 75918 bytes --]

#
# Automatically generated file; DO NOT EDIT.
# Linux/arm 6.1.0-rc3 Kernel Configuration
#
CONFIG_CC_VERSION_TEXT="clang version 16.0.0 (git://gitmirror/llvm_project 463da45892e2d2a262277b91b96f5f8c05dc25d0)"
CONFIG_GCC_VERSION=0
CONFIG_CC_IS_CLANG=y
CONFIG_CLANG_VERSION=160000
CONFIG_AS_IS_LLVM=y
CONFIG_AS_VERSION=160000
CONFIG_LD_VERSION=0
CONFIG_LD_IS_LLD=y
CONFIG_LLD_VERSION=160000
CONFIG_RUST_IS_AVAILABLE=y
CONFIG_CC_HAS_ASM_GOTO_OUTPUT=y
CONFIG_TOOLS_SUPPORT_RELR=y
CONFIG_CC_HAS_ASM_INLINE=y
CONFIG_CC_HAS_NO_PROFILE_FN_ATTR=y
CONFIG_PAHOLE_VERSION=123
CONFIG_IRQ_WORK=y
CONFIG_BUILDTIME_TABLE_SORT=y
CONFIG_THREAD_INFO_IN_TASK=y

#
# General setup
#
CONFIG_BROKEN_ON_SMP=y
CONFIG_INIT_ENV_ARG_LIMIT=32
# CONFIG_COMPILE_TEST is not set
# CONFIG_WERROR is not set
CONFIG_LOCALVERSION=""
CONFIG_LOCALVERSION_AUTO=y
CONFIG_BUILD_SALT=""
CONFIG_HAVE_KERNEL_GZIP=y
CONFIG_HAVE_KERNEL_LZMA=y
CONFIG_HAVE_KERNEL_XZ=y
CONFIG_HAVE_KERNEL_LZO=y
CONFIG_HAVE_KERNEL_LZ4=y
CONFIG_KERNEL_GZIP=y
# CONFIG_KERNEL_LZMA is not set
# CONFIG_KERNEL_XZ is not set
# CONFIG_KERNEL_LZO is not set
# CONFIG_KERNEL_LZ4 is not set
CONFIG_DEFAULT_INIT=""
CONFIG_DEFAULT_HOSTNAME="(none)"
CONFIG_SYSVIPC=y
CONFIG_SYSVIPC_SYSCTL=y
# CONFIG_POSIX_MQUEUE is not set
# CONFIG_WATCH_QUEUE is not set
CONFIG_CROSS_MEMORY_ATTACH=y
# CONFIG_USELIB is not set
# CONFIG_AUDIT is not set
CONFIG_HAVE_ARCH_AUDITSYSCALL=y

#
# IRQ subsystem
#
CONFIG_GENERIC_IRQ_PROBE=y
CONFIG_GENERIC_IRQ_SHOW=y
CONFIG_GENERIC_IRQ_SHOW_LEVEL=y
CONFIG_HARDIRQS_SW_RESEND=y
CONFIG_IRQ_DOMAIN=y
CONFIG_IRQ_FORCED_THREADING=y
CONFIG_SPARSE_IRQ=y
# end of IRQ subsystem

CONFIG_GENERIC_IRQ_MULTI_HANDLER=y
CONFIG_GENERIC_CLOCKEVENTS=y

#
# Timers subsystem
#
CONFIG_HZ_PERIODIC=y
# CONFIG_NO_HZ_IDLE is not set
# CONFIG_NO_HZ is not set
# CONFIG_HIGH_RES_TIMERS is not set
# end of Timers subsystem

CONFIG_BPF=y
CONFIG_HAVE_EBPF_JIT=y

#
# BPF subsystem
#
# CONFIG_BPF_SYSCALL is not set
# CONFIG_BPF_JIT is not set
# end of BPF subsystem

CONFIG_PREEMPT_NONE_BUILD=y
CONFIG_PREEMPT_NONE=y
# CONFIG_PREEMPT_VOLUNTARY is not set
# CONFIG_PREEMPT is not set

#
# CPU/Task time and stats accounting
#
CONFIG_TICK_CPU_ACCOUNTING=y
# CONFIG_VIRT_CPU_ACCOUNTING_GEN is not set
# CONFIG_IRQ_TIME_ACCOUNTING is not set
# CONFIG_BSD_PROCESS_ACCT is not set
# CONFIG_TASKSTATS is not set
# CONFIG_PSI is not set
# end of CPU/Task time and stats accounting

#
# RCU Subsystem
#
CONFIG_TINY_RCU=y
# CONFIG_RCU_EXPERT is not set
CONFIG_SRCU=y
CONFIG_TINY_SRCU=y
# end of RCU Subsystem

# CONFIG_IKCONFIG is not set
# CONFIG_IKHEADERS is not set
CONFIG_LOG_BUF_SHIFT=14
CONFIG_PRINTK_SAFE_LOG_BUF_SHIFT=13
CONFIG_GENERIC_SCHED_CLOCK=y

#
# Scheduler features
#
# end of Scheduler features

CONFIG_CC_IMPLICIT_FALLTHROUGH="-Wimplicit-fallthrough"
CONFIG_GCC12_NO_ARRAY_BOUNDS=y
# CONFIG_CGROUPS is not set
CONFIG_NAMESPACES=y
CONFIG_UTS_NS=y
CONFIG_IPC_NS=y
# CONFIG_USER_NS is not set
CONFIG_PID_NS=y
CONFIG_NET_NS=y
# CONFIG_CHECKPOINT_RESTORE is not set
# CONFIG_SCHED_AUTOGROUP is not set
# CONFIG_SYSFS_DEPRECATED is not set
# CONFIG_RELAY is not set
CONFIG_BLK_DEV_INITRD=y
CONFIG_INITRAMFS_SOURCE=""
CONFIG_RD_GZIP=y
CONFIG_RD_BZIP2=y
CONFIG_RD_LZMA=y
CONFIG_RD_XZ=y
CONFIG_RD_LZO=y
CONFIG_RD_LZ4=y
CONFIG_RD_ZSTD=y
# CONFIG_BOOT_CONFIG is not set
CONFIG_INITRAMFS_PRESERVE_MTIME=y
CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE=y
# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
CONFIG_LD_ORPHAN_WARN=y
CONFIG_SYSCTL=y
CONFIG_HAVE_UID16=y
# CONFIG_EXPERT is not set
CONFIG_UID16=y
CONFIG_MULTIUSER=y
CONFIG_SYSFS_SYSCALL=y
CONFIG_FHANDLE=y
CONFIG_POSIX_TIMERS=y
CONFIG_PRINTK=y
CONFIG_BUG=y
CONFIG_ELF_CORE=y
CONFIG_BASE_FULL=y
CONFIG_FUTEX=y
CONFIG_FUTEX_PI=y
CONFIG_EPOLL=y
CONFIG_SIGNALFD=y
CONFIG_TIMERFD=y
CONFIG_EVENTFD=y
CONFIG_SHMEM=y
CONFIG_AIO=y
CONFIG_IO_URING=y
CONFIG_ADVISE_SYSCALLS=y
CONFIG_MEMBARRIER=y
CONFIG_KALLSYMS=y
# CONFIG_KALLSYMS_ALL is not set
CONFIG_KALLSYMS_BASE_RELATIVE=y
CONFIG_ARCH_HAS_MEMBARRIER_SYNC_CORE=y
CONFIG_RSEQ=y
# CONFIG_EMBEDDED is not set
CONFIG_HAVE_PERF_EVENTS=y
CONFIG_PERF_USE_VMALLOC=y

#
# Kernel Performance Events And Counters
#
# CONFIG_PERF_EVENTS is not set
# end of Kernel Performance Events And Counters

# CONFIG_PROFILING is not set
# end of General setup

CONFIG_ARM=y
CONFIG_ARM_HAS_GROUP_RELOCS=y
CONFIG_SYS_SUPPORTS_APM_EMULATION=y
CONFIG_HAVE_PROC_CPU=y
CONFIG_STACKTRACE_SUPPORT=y
CONFIG_LOCKDEP_SUPPORT=y
CONFIG_FIX_EARLYCON_MEM=y
CONFIG_GENERIC_HWEIGHT=y
CONFIG_GENERIC_CALIBRATE_DELAY=y
CONFIG_ARCH_SUPPORTS_UPROBES=y
CONFIG_ARCH_MTD_XIP=y
CONFIG_ARM_PATCH_PHYS_VIRT=y
CONFIG_NEED_MACH_MEMORY_H=y
CONFIG_PHYS_OFFSET=0xc0000000
CONFIG_GENERIC_BUG=y
CONFIG_PGTABLE_LEVELS=2

#
# System Type
#
CONFIG_MMU=y
CONFIG_ARCH_MMAP_RND_BITS_MIN=8
CONFIG_ARCH_MMAP_RND_BITS_MAX=16

#
# Platform selection
#

#
# CPU Core family selection
#
CONFIG_ARCH_MULTI_V4=y
# CONFIG_ARCH_MULTI_V4T is not set
# CONFIG_ARCH_MULTI_V5 is not set
CONFIG_ARCH_MULTI_V4_V5=y
# CONFIG_ARCH_MULTI_V6 is not set
# CONFIG_ARCH_MULTI_V7 is not set
# end of Platform selection

# CONFIG_ARCH_GEMINI is not set
# CONFIG_ARCH_MOXART is not set
CONFIG_ARCH_SA1100=y
CONFIG_SA1100_ASSABET=y
CONFIG_ASSABET_NEPONSET=y
# CONFIG_SA1100_COLLIE is not set
# CONFIG_SA1100_H3600 is not set

#
# Processor Type
#
CONFIG_CPU_SA1100=y
CONFIG_CPU_32v4=y
CONFIG_CPU_ABRT_EV4=y
CONFIG_CPU_PABRT_LEGACY=y
CONFIG_CPU_CACHE_V4WB=y
CONFIG_CPU_CACHE_VIVT=y
CONFIG_CPU_TLB_V4WB=y
CONFIG_CPU_CP15=y
CONFIG_CPU_CP15_MMU=y
CONFIG_CPU_USE_DOMAINS=y

#
# Processor Features
#
CONFIG_CPU_LITTLE_ENDIAN=y
# CONFIG_CPU_ICACHE_DISABLE is not set
# CONFIG_CPU_DCACHE_DISABLE is not set
CONFIG_NEED_KUSER_HELPERS=y
CONFIG_KUSER_HELPERS=y
CONFIG_ARM_L1_CACHE_SHIFT=5
# end of System Type

CONFIG_SA1111=y

#
# Bus support
#
CONFIG_ISA=y
# end of Bus support

#
# Kernel Features
#
CONFIG_IRQSTACKS=y
CONFIG_VMSPLIT_3G=y
# CONFIG_VMSPLIT_3G_OPT is not set
# CONFIG_VMSPLIT_2G is not set
# CONFIG_VMSPLIT_1G is not set
CONFIG_PAGE_OFFSET=0xC0000000
CONFIG_ARCH_NR_GPIO=0
CONFIG_HZ_FIXED=0
CONFIG_HZ_100=y
# CONFIG_HZ_200 is not set
# CONFIG_HZ_250 is not set
# CONFIG_HZ_300 is not set
# CONFIG_HZ_500 is not set
# CONFIG_HZ_1000 is not set
CONFIG_HZ=100
CONFIG_AEABI=y
# CONFIG_OABI_COMPAT is not set
CONFIG_ARCH_SELECT_MEMORY_MODEL=y
CONFIG_ARCH_SPARSEMEM_ENABLE=y
# CONFIG_HIGHMEM is not set
CONFIG_CPU_SW_DOMAIN_PAN=y
CONFIG_ARM_MODULE_PLTS=y
CONFIG_ARCH_FORCE_MAX_ORDER=9
CONFIG_ALIGNMENT_TRAP=y
# CONFIG_UACCESS_WITH_MEMCPY is not set
# CONFIG_PARAVIRT is not set
# CONFIG_PARAVIRT_TIME_ACCOUNTING is not set
CONFIG_CC_HAVE_STACKPROTECTOR_TLS=y
# end of Kernel Features

#
# Boot options
#
# CONFIG_USE_OF is not set
CONFIG_ATAGS=y
# CONFIG_UNUSED_BOARD_FILES is not set
# CONFIG_DEPRECATED_PARAM_STRUCT is not set
CONFIG_ZBOOT_ROM_TEXT=0x80000
CONFIG_ZBOOT_ROM_BSS=0xc1000000
CONFIG_ZBOOT_ROM=y
CONFIG_CMDLINE="console=ttySA0,38400n8 cpufreq=221200 rw root=/dev/mtdblock2 mtdparts=sa1100:512K(boot),1M(kernel),2560K(initrd),4M(root) load_ramdisk=1 prompt_ramdisk=0 mem=32M noinitrd initrd=0xc0800000,3M"
CONFIG_CMDLINE_FROM_BOOTLOADER=y
# CONFIG_CMDLINE_EXTEND is not set
# CONFIG_CMDLINE_FORCE is not set
# CONFIG_KEXEC is not set
# CONFIG_CRASH_DUMP is not set
# CONFIG_AUTO_ZRELADDR is not set
# end of Boot options

#
# CPU Power Management
#

#
# CPU Frequency scaling
#
CONFIG_CPU_FREQ=y
# CONFIG_CPU_FREQ_STAT is not set
# CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE is not set
# CONFIG_CPU_FREQ_DEFAULT_GOV_POWERSAVE is not set
CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE=y
# CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND is not set
# CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE is not set
# CONFIG_CPU_FREQ_GOV_PERFORMANCE is not set
# CONFIG_CPU_FREQ_GOV_POWERSAVE is not set
CONFIG_CPU_FREQ_GOV_USERSPACE=y
# CONFIG_CPU_FREQ_GOV_ONDEMAND is not set
# CONFIG_CPU_FREQ_GOV_CONSERVATIVE is not set

#
# CPU frequency scaling drivers
#
CONFIG_ARM_SA1110_CPUFREQ=y
# end of CPU Frequency scaling

#
# CPU Idle
#
# CONFIG_CPU_IDLE is not set
# end of CPU Idle
# end of CPU Power Management

#
# Floating point emulation
#

#
# At least one emulation must be selected
#
# end of Floating point emulation

#
# Power management options
#
CONFIG_SUSPEND=y
CONFIG_SUSPEND_FREEZER=y
# CONFIG_HIBERNATION is not set
CONFIG_PM_SLEEP=y
# CONFIG_PM_AUTOSLEEP is not set
# CONFIG_PM_USERSPACE_AUTOSLEEP is not set
# CONFIG_PM_WAKELOCKS is not set
CONFIG_PM=y
# CONFIG_PM_DEBUG is not set
# CONFIG_APM_EMULATION is not set
CONFIG_PM_CLK=y
# CONFIG_WQ_POWER_EFFICIENT_DEFAULT is not set
CONFIG_CPU_PM=y
CONFIG_ARCH_SUSPEND_POSSIBLE=y
CONFIG_ARM_CPU_SUSPEND=y
CONFIG_ARCH_HIBERNATION_POSSIBLE=y
# end of Power management options

CONFIG_AS_VFP_VMRS_FPINST=y

#
# General architecture-dependent options
#
# CONFIG_KPROBES is not set
# CONFIG_JUMP_LABEL is not set
CONFIG_ARCH_USE_BUILTIN_BSWAP=y
CONFIG_HAVE_KPROBES=y
CONFIG_HAVE_KRETPROBES=y
CONFIG_HAVE_OPTPROBES=y
CONFIG_HAVE_NMI=y
CONFIG_TRACE_IRQFLAGS_SUPPORT=y
CONFIG_HAVE_ARCH_TRACEHOOK=y
CONFIG_HAVE_DMA_CONTIGUOUS=y
CONFIG_GENERIC_SMP_IDLE_THREAD=y
CONFIG_GENERIC_IDLE_POLL_SETUP=y
CONFIG_ARCH_HAS_FORTIFY_SOURCE=y
CONFIG_ARCH_HAS_KEEPINITRD=y
CONFIG_ARCH_HAS_SET_MEMORY=y
CONFIG_HAVE_ARCH_THREAD_STRUCT_WHITELIST=y
CONFIG_ARCH_32BIT_OFF_T=y
CONFIG_HAVE_REGS_AND_STACK_ACCESS_API=y
CONFIG_HAVE_RSEQ=y
CONFIG_HAVE_PERF_REGS=y
CONFIG_HAVE_PERF_USER_STACK_DUMP=y
CONFIG_HAVE_ARCH_JUMP_LABEL=y
CONFIG_ARCH_WANT_IPC_PARSE_VERSION=y
CONFIG_HAVE_ARCH_SECCOMP=y
CONFIG_HAVE_ARCH_SECCOMP_FILTER=y
CONFIG_SECCOMP=y
CONFIG_SECCOMP_FILTER=y
# CONFIG_SECCOMP_CACHE_DEBUG is not set
CONFIG_HAVE_STACKPROTECTOR=y
CONFIG_STACKPROTECTOR=y
CONFIG_STACKPROTECTOR_STRONG=y
CONFIG_LTO_NONE=y
CONFIG_HAVE_CONTEXT_TRACKING_USER=y
CONFIG_HAVE_VIRT_CPU_ACCOUNTING_GEN=y
CONFIG_HAVE_IRQ_TIME_ACCOUNTING=y
CONFIG_HAVE_MOD_ARCH_SPECIFIC=y
CONFIG_MODULES_USE_ELF_REL=y
CONFIG_HAVE_IRQ_EXIT_ON_IRQ_STACK=y
CONFIG_HAVE_SOFTIRQ_ON_OWN_STACK=y
CONFIG_SOFTIRQ_ON_OWN_STACK=y
CONFIG_ARCH_HAS_ELF_RANDOMIZE=y
CONFIG_HAVE_ARCH_MMAP_RND_BITS=y
CONFIG_HAVE_EXIT_THREAD=y
CONFIG_ARCH_MMAP_RND_BITS=8
CONFIG_PAGE_SIZE_LESS_THAN_64KB=y
CONFIG_PAGE_SIZE_LESS_THAN_256KB=y
CONFIG_ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT=y
CONFIG_ISA_BUS_API=y
CONFIG_CLONE_BACKWARDS=y
CONFIG_OLD_SIGSUSPEND3=y
CONFIG_OLD_SIGACTION=y
CONFIG_COMPAT_32BIT_TIME=y
CONFIG_CPU_NO_EFFICIENT_FFS=y
CONFIG_HAVE_ARCH_VMAP_STACK=y
CONFIG_VMAP_STACK=y
CONFIG_ARCH_OPTIONAL_KERNEL_RWX=y
CONFIG_ARCH_HAS_STRICT_KERNEL_RWX=y
# CONFIG_STRICT_KERNEL_RWX is not set
CONFIG_ARCH_HAS_STRICT_MODULE_RWX=y
# CONFIG_STRICT_MODULE_RWX is not set
CONFIG_ARCH_WANT_LD_ORPHAN_WARN=y
CONFIG_HAVE_ARCH_PFN_VALID=y

#
# GCOV-based kernel profiling
#
CONFIG_ARCH_HAS_GCOV_PROFILE_ALL=y
# end of GCOV-based kernel profiling

CONFIG_HAVE_GCC_PLUGINS=y
# end of General architecture-dependent options

CONFIG_RT_MUTEXES=y
CONFIG_BASE_SMALL=0
CONFIG_MODULES=y
# CONFIG_MODULE_FORCE_LOAD is not set
CONFIG_MODULE_UNLOAD=y
# CONFIG_MODULE_FORCE_UNLOAD is not set
# CONFIG_MODULE_UNLOAD_TAINT_TRACKING is not set
# CONFIG_MODVERSIONS is not set
# CONFIG_MODULE_SRCVERSION_ALL is not set
# CONFIG_MODULE_SIG is not set
CONFIG_MODULE_COMPRESS_NONE=y
# CONFIG_MODULE_COMPRESS_GZIP is not set
# CONFIG_MODULE_COMPRESS_XZ is not set
# CONFIG_MODULE_COMPRESS_ZSTD is not set
# CONFIG_MODULE_ALLOW_MISSING_NAMESPACE_IMPORTS is not set
CONFIG_MODPROBE_PATH="/sbin/modprobe"
CONFIG_BLOCK=y
CONFIG_BLOCK_LEGACY_AUTOLOAD=y
CONFIG_BLK_DEV_BSG_COMMON=m
# CONFIG_BLK_DEV_BSGLIB is not set
# CONFIG_BLK_DEV_INTEGRITY is not set
# CONFIG_BLK_DEV_ZONED is not set
# CONFIG_BLK_WBT is not set
# CONFIG_BLK_SED_OPAL is not set
# CONFIG_BLK_INLINE_ENCRYPTION is not set

#
# Partition Types
#
CONFIG_PARTITION_ADVANCED=y
# CONFIG_ACORN_PARTITION is not set
# CONFIG_AIX_PARTITION is not set
# CONFIG_OSF_PARTITION is not set
# CONFIG_AMIGA_PARTITION is not set
# CONFIG_ATARI_PARTITION is not set
# CONFIG_MAC_PARTITION is not set
# CONFIG_MSDOS_PARTITION is not set
# CONFIG_LDM_PARTITION is not set
# CONFIG_SGI_PARTITION is not set
# CONFIG_ULTRIX_PARTITION is not set
# CONFIG_SUN_PARTITION is not set
# CONFIG_KARMA_PARTITION is not set
CONFIG_EFI_PARTITION=y
# CONFIG_SYSV68_PARTITION is not set
# CONFIG_CMDLINE_PARTITION is not set
# end of Partition Types

CONFIG_BLK_PM=y

#
# IO Schedulers
#
CONFIG_MQ_IOSCHED_DEADLINE=y
CONFIG_MQ_IOSCHED_KYBER=y
# CONFIG_IOSCHED_BFQ is not set
# end of IO Schedulers

CONFIG_INLINE_SPIN_UNLOCK_IRQ=y
CONFIG_INLINE_READ_UNLOCK=y
CONFIG_INLINE_READ_UNLOCK_IRQ=y
CONFIG_INLINE_WRITE_UNLOCK=y
CONFIG_INLINE_WRITE_UNLOCK_IRQ=y
CONFIG_ARCH_SUPPORTS_ATOMIC_RMW=y
CONFIG_ARCH_HAS_NON_OVERLAPPING_ADDRESS_SPACE=y
CONFIG_FREEZER=y

#
# Executable file formats
#
CONFIG_BINFMT_ELF=y
# CONFIG_BINFMT_ELF_FDPIC is not set
CONFIG_ELFCORE=y
CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS=y
CONFIG_BINFMT_SCRIPT=y
CONFIG_ARCH_HAS_BINFMT_FLAT=y
# CONFIG_BINFMT_FLAT is not set
CONFIG_BINFMT_FLAT_ARGVP_ENVP_ON_STACK=y
# CONFIG_BINFMT_MISC is not set
CONFIG_COREDUMP=y
# end of Executable file formats

#
# Memory Management options
#
CONFIG_SWAP=y
# CONFIG_ZSWAP is not set

#
# SLAB allocator options
#
# CONFIG_SLAB is not set
CONFIG_SLUB=y
CONFIG_SLAB_MERGE_DEFAULT=y
# CONFIG_SLAB_FREELIST_RANDOM is not set
# CONFIG_SLAB_FREELIST_HARDENED is not set
# CONFIG_SLUB_STATS is not set
# end of SLAB allocator options

# CONFIG_SHUFFLE_PAGE_ALLOCATOR is not set
CONFIG_COMPAT_BRK=y
CONFIG_SELECT_MEMORY_MODEL=y
CONFIG_SPARSEMEM_MANUAL=y
CONFIG_SPARSEMEM=y
CONFIG_SPARSEMEM_STATIC=y
CONFIG_ARCH_KEEP_MEMBLOCK=y
CONFIG_SPLIT_PTLOCK_CPUS=999999
CONFIG_COMPACTION=y
CONFIG_COMPACT_UNEVICTABLE_DEFAULT=1
# CONFIG_PAGE_REPORTING is not set
CONFIG_MIGRATION=y
# CONFIG_KSM is not set
CONFIG_DEFAULT_MMAP_MIN_ADDR=4096
CONFIG_ARCH_WANT_GENERAL_HUGETLB=y
CONFIG_NEED_PER_CPU_KM=y
# CONFIG_CMA is not set
CONFIG_GENERIC_EARLY_IOREMAP=y
# CONFIG_IDLE_PAGE_TRACKING is not set
CONFIG_ARCH_HAS_CURRENT_STACK_POINTER=y
CONFIG_ZONE_DMA=y
CONFIG_VM_EVENT_COUNTERS=y
# CONFIG_PERCPU_STATS is not set

#
# GUP_TEST needs to have DEBUG_FS enabled
#
# CONFIG_ANON_VMA_NAME is not set
# CONFIG_USERFAULTFD is not set

#
# Data Access Monitoring
#
# CONFIG_DAMON is not set
# end of Data Access Monitoring
# end of Memory Management options

CONFIG_NET=y

#
# Networking options
#
CONFIG_PACKET=y
# CONFIG_PACKET_DIAG is not set
CONFIG_UNIX=y
CONFIG_UNIX_SCM=y
CONFIG_AF_UNIX_OOB=y
# CONFIG_UNIX_DIAG is not set
# CONFIG_TLS is not set
# CONFIG_XFRM_USER is not set
# CONFIG_NET_KEY is not set
CONFIG_INET=y
# CONFIG_IP_MULTICAST is not set
# CONFIG_IP_ADVANCED_ROUTER is not set
# CONFIG_IP_PNP is not set
# CONFIG_NET_IPIP is not set
# CONFIG_NET_IPGRE_DEMUX is not set
# CONFIG_SYN_COOKIES is not set
# CONFIG_NET_IPVTI is not set
# CONFIG_NET_FOU is not set
# CONFIG_INET_AH is not set
# CONFIG_INET_ESP is not set
# CONFIG_INET_IPCOMP is not set
CONFIG_INET_DIAG=y
CONFIG_INET_TCP_DIAG=y
# CONFIG_INET_UDP_DIAG is not set
# CONFIG_INET_RAW_DIAG is not set
# CONFIG_INET_DIAG_DESTROY is not set
# CONFIG_TCP_CONG_ADVANCED is not set
CONFIG_TCP_CONG_CUBIC=y
CONFIG_DEFAULT_TCP_CONG="cubic"
# CONFIG_TCP_MD5SIG is not set
# CONFIG_IPV6 is not set
# CONFIG_MPTCP is not set
# CONFIG_NETWORK_SECMARK is not set
CONFIG_NET_PTP_CLASSIFY=y
# CONFIG_NETWORK_PHY_TIMESTAMPING is not set
# CONFIG_NETFILTER is not set
# CONFIG_BPFILTER is not set
# CONFIG_IP_DCCP is not set
# CONFIG_IP_SCTP is not set
# CONFIG_RDS is not set
# CONFIG_TIPC is not set
# CONFIG_ATM is not set
# CONFIG_L2TP is not set
# CONFIG_BRIDGE is not set
# CONFIG_NET_DSA is not set
# CONFIG_VLAN_8021Q is not set
# CONFIG_LLC2 is not set
# CONFIG_ATALK is not set
# CONFIG_X25 is not set
# CONFIG_LAPB is not set
# CONFIG_PHONET is not set
# CONFIG_IEEE802154 is not set
# CONFIG_NET_SCHED is not set
# CONFIG_DCB is not set
# CONFIG_BATMAN_ADV is not set
# CONFIG_OPENVSWITCH is not set
# CONFIG_VSOCKETS is not set
# CONFIG_NETLINK_DIAG is not set
# CONFIG_MPLS is not set
# CONFIG_NET_NSH is not set
# CONFIG_HSR is not set
# CONFIG_NET_SWITCHDEV is not set
# CONFIG_NET_L3_MASTER_DEV is not set
# CONFIG_QRTR is not set
# CONFIG_NET_NCSI is not set
CONFIG_NET_RX_BUSY_POLL=y
CONFIG_BQL=y

#
# Network testing
#
# CONFIG_NET_PKTGEN is not set
# end of Network testing
# end of Networking options

# CONFIG_HAMRADIO is not set
# CONFIG_CAN is not set
# CONFIG_BT is not set
# CONFIG_AF_RXRPC is not set
# CONFIG_AF_KCM is not set
# CONFIG_MCTP is not set
CONFIG_WIRELESS=y
# CONFIG_CFG80211 is not set

#
# CFG80211 needs to be enabled for MAC80211
#
CONFIG_MAC80211_STA_HASH_MAX_SIZE=0
# CONFIG_RFKILL is not set
# CONFIG_NET_9P is not set
# CONFIG_CAIF is not set
# CONFIG_CEPH_LIB is not set
# CONFIG_NFC is not set
# CONFIG_PSAMPLE is not set
# CONFIG_NET_IFE is not set
# CONFIG_LWTUNNEL is not set
# CONFIG_FAILOVER is not set
CONFIG_ETHTOOL_NETLINK=y

#
# Device Drivers
#
CONFIG_HAVE_PCI=y
# CONFIG_PCI is not set
CONFIG_PCCARD=y
CONFIG_PCMCIA=y
CONFIG_PCMCIA_LOAD_CIS=y
CONFIG_PCMCIA_MAX1600=y

#
# PC-card bridges
#
# CONFIG_I82365 is not set
# CONFIG_TCIC is not set
CONFIG_PCMCIA_SOC_COMMON=y
CONFIG_PCMCIA_SA11XX_BASE=y
CONFIG_PCMCIA_SA1100=y
CONFIG_PCMCIA_SA1111=y
# CONFIG_PCMCIA_DEBUG is not set

#
# Generic Driver Options
#
# CONFIG_UEVENT_HELPER is not set
# CONFIG_DEVTMPFS is not set
CONFIG_STANDALONE=y
CONFIG_PREVENT_FIRMWARE_BUILD=y

#
# Firmware loader
#
CONFIG_FW_LOADER=y
CONFIG_EXTRA_FIRMWARE=""
# CONFIG_FW_LOADER_USER_HELPER is not set
# CONFIG_FW_LOADER_COMPRESS is not set
CONFIG_FW_CACHE=y
# CONFIG_FW_UPLOAD is not set
# end of Firmware loader

CONFIG_ALLOW_DEV_COREDUMP=y
# CONFIG_DEBUG_DRIVER is not set
# CONFIG_DEBUG_DEVRES is not set
# CONFIG_DEBUG_TEST_DRIVER_REMOVE is not set
# CONFIG_TEST_ASYNC_DRIVER_PROBE is not set
CONFIG_GENERIC_CPU_AUTOPROBE=y
# end of Generic Driver Options

#
# Bus devices
#
# CONFIG_BRCMSTB_GISB_ARB is not set
# CONFIG_MHI_BUS is not set
# CONFIG_MHI_BUS_EP is not set
# end of Bus devices

# CONFIG_CONNECTOR is not set

#
# Firmware Drivers
#

#
# ARM System Control and Management Interface Protocol
#
# CONFIG_ARM_SCMI_PROTOCOL is not set
# end of ARM System Control and Management Interface Protocol

# CONFIG_FW_CFG_SYSFS is not set
# CONFIG_GOOGLE_FIRMWARE is not set

#
# Tegra firmware driver
#
# end of Tegra firmware driver
# end of Firmware Drivers

# CONFIG_GNSS is not set
CONFIG_MTD=y
# CONFIG_MTD_TESTS is not set

#
# Partition parsers
#
# CONFIG_MTD_AR7_PARTS is not set
CONFIG_MTD_CMDLINE_PARTS=y
# CONFIG_MTD_AFS_PARTS is not set
CONFIG_MTD_REDBOOT_PARTS=y
CONFIG_MTD_REDBOOT_DIRECTORY_BLOCK=-1
# CONFIG_MTD_REDBOOT_PARTS_UNALLOCATED is not set
# CONFIG_MTD_REDBOOT_PARTS_READONLY is not set
# end of Partition parsers

#
# User Modules And Translation Layers
#
CONFIG_MTD_BLKDEVS=y
CONFIG_MTD_BLOCK=y

#
# Note that in some cases UBI block is preferred. See MTD_UBI_BLOCK.
#
# CONFIG_FTL is not set
# CONFIG_NFTL is not set
# CONFIG_INFTL is not set
# CONFIG_RFD_FTL is not set
# CONFIG_SSFDC is not set
# CONFIG_SM_FTL is not set
# CONFIG_MTD_OOPS is not set
# CONFIG_MTD_SWAP is not set
# CONFIG_MTD_PARTITIONED_MASTER is not set

#
# RAM/ROM/Flash chip drivers
#
CONFIG_MTD_CFI=y
# CONFIG_MTD_JEDECPROBE is not set
CONFIG_MTD_GEN_PROBE=y
CONFIG_MTD_CFI_ADV_OPTIONS=y
CONFIG_MTD_CFI_NOSWAP=y
# CONFIG_MTD_CFI_BE_BYTE_SWAP is not set
# CONFIG_MTD_CFI_LE_BYTE_SWAP is not set
# CONFIG_MTD_CFI_GEOMETRY is not set
CONFIG_MTD_MAP_BANK_WIDTH_1=y
CONFIG_MTD_MAP_BANK_WIDTH_2=y
CONFIG_MTD_MAP_BANK_WIDTH_4=y
CONFIG_MTD_CFI_I1=y
CONFIG_MTD_CFI_I2=y
# CONFIG_MTD_OTP is not set
CONFIG_MTD_CFI_INTELEXT=y
# CONFIG_MTD_CFI_AMDSTD is not set
# CONFIG_MTD_CFI_STAA is not set
CONFIG_MTD_CFI_UTIL=y
CONFIG_MTD_RAM=y
# CONFIG_MTD_ROM is not set
# CONFIG_MTD_ABSENT is not set
# CONFIG_MTD_XIP is not set
# end of RAM/ROM/Flash chip drivers

#
# Mapping drivers for chip access
#
# CONFIG_MTD_COMPLEX_MAPPINGS is not set
# CONFIG_MTD_PHYSMAP is not set
CONFIG_MTD_SA1100=y
# CONFIG_MTD_PLATRAM is not set
# end of Mapping drivers for chip access

#
# Self-contained MTD device drivers
#
# CONFIG_MTD_SLRAM is not set
# CONFIG_MTD_PHRAM is not set
# CONFIG_MTD_MTDRAM is not set
# CONFIG_MTD_BLOCK2MTD is not set

#
# Disk-On-Chip Device Drivers
#
# CONFIG_MTD_DOCG3 is not set
# end of Self-contained MTD device drivers

#
# NAND
#
# CONFIG_MTD_ONENAND is not set
# CONFIG_MTD_RAW_NAND is not set

#
# ECC engine support
#
# CONFIG_MTD_NAND_ECC_SW_HAMMING is not set
# CONFIG_MTD_NAND_ECC_SW_BCH is not set
# CONFIG_MTD_NAND_ECC_MXIC is not set
# end of ECC engine support
# end of NAND

#
# LPDDR & LPDDR2 PCM memory drivers
#
# CONFIG_MTD_LPDDR is not set
# CONFIG_MTD_LPDDR2_NVM is not set
# end of LPDDR & LPDDR2 PCM memory drivers

# CONFIG_MTD_UBI is not set
# CONFIG_MTD_HYPERBUS is not set
# CONFIG_OF is not set
CONFIG_ARCH_MIGHT_HAVE_PC_PARPORT=y
# CONFIG_PARPORT is not set
# CONFIG_PNP is not set
CONFIG_BLK_DEV=y
# CONFIG_BLK_DEV_NULL_BLK is not set
# CONFIG_BLK_DEV_LOOP is not set
# CONFIG_BLK_DEV_DRBD is not set
# CONFIG_BLK_DEV_NBD is not set
CONFIG_BLK_DEV_RAM=y
CONFIG_BLK_DEV_RAM_COUNT=16
CONFIG_BLK_DEV_RAM_SIZE=8192
# CONFIG_CDROM_PKTCDVD is not set
# CONFIG_ATA_OVER_ETH is not set
# CONFIG_BLK_DEV_RBD is not set
# CONFIG_BLK_DEV_UBLK is not set

#
# NVME Support
#
# CONFIG_NVME_FC is not set
# CONFIG_NVME_TCP is not set
# end of NVME Support

#
# Misc devices
#
# CONFIG_AD525X_DPOT is not set
# CONFIG_DUMMY_IRQ is not set
# CONFIG_ICS932S401 is not set
# CONFIG_ENCLOSURE_SERVICES is not set
# CONFIG_APDS9802ALS is not set
# CONFIG_ISL29003 is not set
# CONFIG_ISL29020 is not set
# CONFIG_SENSORS_TSL2550 is not set
# CONFIG_SENSORS_BH1770 is not set
# CONFIG_SENSORS_APDS990X is not set
# CONFIG_HMC6352 is not set
# CONFIG_DS1682 is not set
# CONFIG_SRAM is not set
# CONFIG_XILINX_SDFEC is not set
# CONFIG_C2PORT is not set

#
# EEPROM support
#
# CONFIG_EEPROM_AT24 is not set
# CONFIG_EEPROM_LEGACY is not set
# CONFIG_EEPROM_MAX6875 is not set
# CONFIG_EEPROM_93CX6 is not set
# CONFIG_EEPROM_IDT_89HPESX is not set
# CONFIG_EEPROM_EE1004 is not set
# end of EEPROM support

#
# Texas Instruments shared transport line discipline
#
# CONFIG_TI_ST is not set
# end of Texas Instruments shared transport line discipline

# CONFIG_SENSORS_LIS3_I2C is not set
# CONFIG_ALTERA_STAPL is not set
# CONFIG_ECHO is not set
# CONFIG_MISC_RTSX_USB is not set
# CONFIG_PVPANIC is not set
# end of Misc devices

#
# SCSI device support
#
CONFIG_SCSI_MOD=m
# CONFIG_RAID_ATTRS is not set
CONFIG_SCSI_COMMON=m
CONFIG_SCSI=m
CONFIG_SCSI_DMA=y
CONFIG_SCSI_PROC_FS=y

#
# SCSI support type (disk, tape, CD-ROM)
#
CONFIG_BLK_DEV_SD=m
# CONFIG_CHR_DEV_ST is not set
# CONFIG_BLK_DEV_SR is not set
# CONFIG_CHR_DEV_SG is not set
CONFIG_BLK_DEV_BSG=y
# CONFIG_CHR_DEV_SCH is not set
# CONFIG_SCSI_CONSTANTS is not set
# CONFIG_SCSI_LOGGING is not set
# CONFIG_SCSI_SCAN_ASYNC is not set

#
# SCSI Transports
#
# CONFIG_SCSI_SPI_ATTRS is not set
# CONFIG_SCSI_FC_ATTRS is not set
# CONFIG_SCSI_ISCSI_ATTRS is not set
# CONFIG_SCSI_SAS_ATTRS is not set
# CONFIG_SCSI_SAS_LIBSAS is not set
# CONFIG_SCSI_SRP_ATTRS is not set
# end of SCSI Transports

CONFIG_SCSI_LOWLEVEL=y
# CONFIG_ISCSI_TCP is not set
# CONFIG_ISCSI_BOOT_SYSFS is not set
# CONFIG_SCSI_AHA152X is not set
# CONFIG_SCSI_FDOMAIN_ISA is not set
# CONFIG_SCSI_GENERIC_NCR5380 is not set
# CONFIG_SCSI_QLOGIC_FAS is not set
# CONFIG_SCSI_DEBUG is not set
# CONFIG_SCSI_LOWLEVEL_PCMCIA is not set
# CONFIG_SCSI_DH is not set
# end of SCSI device support

# CONFIG_ATA is not set
# CONFIG_MD is not set
# CONFIG_TARGET_CORE is not set
CONFIG_NETDEVICES=y
CONFIG_MII=y
CONFIG_NET_CORE=y
# CONFIG_BONDING is not set
# CONFIG_DUMMY is not set
# CONFIG_WIREGUARD is not set
# CONFIG_EQUALIZER is not set
# CONFIG_NET_TEAM is not set
# CONFIG_MACVLAN is not set
# CONFIG_IPVLAN is not set
# CONFIG_VXLAN is not set
# CONFIG_GENEVE is not set
# CONFIG_BAREUDP is not set
# CONFIG_GTP is not set
# CONFIG_MACSEC is not set
# CONFIG_NETCONSOLE is not set
# CONFIG_TUN is not set
# CONFIG_TUN_VNET_CROSS_LE is not set
# CONFIG_VETH is not set
# CONFIG_NLMON is not set
# CONFIG_ARCNET is not set
CONFIG_ETHERNET=y
CONFIG_NET_VENDOR_3COM=y
# CONFIG_EL3 is not set
# CONFIG_PCMCIA_3C574 is not set
# CONFIG_PCMCIA_3C589 is not set
CONFIG_NET_VENDOR_ALACRITECH=y
# CONFIG_ALTERA_TSE is not set
CONFIG_NET_VENDOR_AMAZON=y
CONFIG_NET_VENDOR_AMD=y
# CONFIG_PCMCIA_NMCLAN is not set
CONFIG_NET_VENDOR_AQUANTIA=y
CONFIG_NET_VENDOR_ARC=y
CONFIG_NET_VENDOR_ASIX=y
CONFIG_NET_VENDOR_BROADCOM=y
# CONFIG_B44 is not set
# CONFIG_BCMGENET is not set
# CONFIG_SYSTEMPORT is not set
CONFIG_NET_VENDOR_CADENCE=y
# CONFIG_MACB is not set
CONFIG_NET_VENDOR_CAVIUM=y
CONFIG_NET_VENDOR_CIRRUS=y
# CONFIG_CS89x0_ISA is not set
# CONFIG_CS89x0_PLATFORM is not set
CONFIG_NET_VENDOR_CORTINA=y
CONFIG_NET_VENDOR_DAVICOM=y
# CONFIG_DM9000 is not set
# CONFIG_DNET is not set
CONFIG_NET_VENDOR_ENGLEDER=y
# CONFIG_TSNEP is not set
CONFIG_NET_VENDOR_EZCHIP=y
CONFIG_NET_VENDOR_FARADAY=y
# CONFIG_FTMAC100 is not set
# CONFIG_FTGMAC100 is not set
CONFIG_NET_VENDOR_FUJITSU=y
# CONFIG_PCMCIA_FMVJ18X is not set
CONFIG_NET_VENDOR_FUNGIBLE=y
CONFIG_NET_VENDOR_GOOGLE=y
CONFIG_NET_VENDOR_HUAWEI=y
CONFIG_NET_VENDOR_I825XX=y
CONFIG_NET_VENDOR_INTEL=y
CONFIG_NET_VENDOR_WANGXUN=y
CONFIG_NET_VENDOR_LITEX=y
CONFIG_NET_VENDOR_MARVELL=y
# CONFIG_MVMDIO is not set
CONFIG_NET_VENDOR_MELLANOX=y
# CONFIG_MLXSW_CORE is not set
# CONFIG_MLXFW is not set
CONFIG_NET_VENDOR_MICREL=y
# CONFIG_KS8851_MLL is not set
CONFIG_NET_VENDOR_MICROCHIP=y
# CONFIG_VCAP is not set
CONFIG_NET_VENDOR_MICROSEMI=y
CONFIG_NET_VENDOR_MICROSOFT=y
CONFIG_NET_VENDOR_NI=y
# CONFIG_NI_XGE_MANAGEMENT_ENET is not set
CONFIG_NET_VENDOR_NATSEMI=y
CONFIG_NET_VENDOR_NETRONOME=y
CONFIG_NET_VENDOR_8390=y
# CONFIG_PCMCIA_AXNET is not set
# CONFIG_AX88796 is not set
# CONFIG_NE2000 is not set
CONFIG_PCMCIA_PCNET=y
# CONFIG_ULTRA is not set
# CONFIG_WD80x3 is not set
# CONFIG_ETHOC is not set
CONFIG_NET_VENDOR_PENSANDO=y
CONFIG_NET_VENDOR_QUALCOMM=y
# CONFIG_QCOM_EMAC is not set
# CONFIG_RMNET is not set
CONFIG_NET_VENDOR_RENESAS=y
CONFIG_NET_VENDOR_ROCKER=y
CONFIG_NET_VENDOR_SAMSUNG=y
# CONFIG_SXGBE_ETH is not set
CONFIG_NET_VENDOR_SEEQ=y
CONFIG_NET_VENDOR_SOLARFLARE=y
CONFIG_NET_VENDOR_SMSC=y
CONFIG_SMC9194=y
CONFIG_SMC91X=y
# CONFIG_PCMCIA_SMC91C92 is not set
# CONFIG_SMSC911X is not set
CONFIG_NET_VENDOR_SOCIONEXT=y
CONFIG_NET_VENDOR_STMICRO=y
# CONFIG_STMMAC_ETH is not set
CONFIG_NET_VENDOR_SYNOPSYS=y
# CONFIG_DWC_XLGMAC is not set
CONFIG_NET_VENDOR_VERTEXCOM=y
CONFIG_NET_VENDOR_VIA=y
CONFIG_NET_VENDOR_WIZNET=y
# CONFIG_WIZNET_W5100 is not set
# CONFIG_WIZNET_W5300 is not set
CONFIG_NET_VENDOR_XILINX=y
# CONFIG_XILINX_EMACLITE is not set
# CONFIG_XILINX_AXI_EMAC is not set
# CONFIG_XILINX_LL_TEMAC is not set
CONFIG_NET_VENDOR_XIRCOM=y
# CONFIG_PCMCIA_XIRC2PS is not set
# CONFIG_PHYLIB is not set
# CONFIG_PSE_CONTROLLER is not set
# CONFIG_MDIO_DEVICE is not set

#
# PCS device drivers
#
# end of PCS device drivers

# CONFIG_PPP is not set
# CONFIG_SLIP is not set

#
# Host-side USB support is needed for USB Network Adapter support
#
CONFIG_USB_NET_DRIVERS=m
# CONFIG_USB_CATC is not set
# CONFIG_USB_KAWETH is not set
# CONFIG_USB_PEGASUS is not set
# CONFIG_USB_RTL8150 is not set
# CONFIG_USB_RTL8152 is not set
# CONFIG_USB_LAN78XX is not set
# CONFIG_USB_USBNET is not set
# CONFIG_USB_IPHETH is not set
CONFIG_WLAN=y
CONFIG_WLAN_VENDOR_ADMTEK=y
CONFIG_WLAN_VENDOR_ATH=y
# CONFIG_ATH_DEBUG is not set
CONFIG_WLAN_VENDOR_ATMEL=y
CONFIG_WLAN_VENDOR_BROADCOM=y
CONFIG_WLAN_VENDOR_CISCO=y
CONFIG_WLAN_VENDOR_INTEL=y
CONFIG_WLAN_VENDOR_INTERSIL=y
# CONFIG_HOSTAP is not set
CONFIG_WLAN_VENDOR_MARVELL=y
CONFIG_WLAN_VENDOR_MEDIATEK=y
CONFIG_WLAN_VENDOR_MICROCHIP=y
CONFIG_WLAN_VENDOR_PURELIFI=y
CONFIG_WLAN_VENDOR_RALINK=y
CONFIG_WLAN_VENDOR_REALTEK=y
CONFIG_WLAN_VENDOR_RSI=y
CONFIG_WLAN_VENDOR_SILABS=y
CONFIG_WLAN_VENDOR_ST=y
CONFIG_WLAN_VENDOR_TI=y
CONFIG_WLAN_VENDOR_ZYDAS=y
CONFIG_WLAN_VENDOR_QUANTENNA=y
# CONFIG_PCMCIA_RAYCS is not set
# CONFIG_WAN is not set

#
# Wireless WAN
#
# CONFIG_WWAN is not set
# end of Wireless WAN

# CONFIG_NET_FAILOVER is not set
CONFIG_NETDEV_LEGACY_INIT=y
# CONFIG_ISDN is not set

#
# Input device support
#
CONFIG_INPUT=y
CONFIG_INPUT_LEDS=y
CONFIG_INPUT_FF_MEMLESS=y
# CONFIG_INPUT_SPARSEKMAP is not set
# CONFIG_INPUT_MATRIXKMAP is not set
CONFIG_INPUT_VIVALDIFMAP=y

#
# Userland interfaces
#
# CONFIG_INPUT_MOUSEDEV is not set
# CONFIG_INPUT_JOYDEV is not set
# CONFIG_INPUT_EVDEV is not set
# CONFIG_INPUT_EVBUG is not set

#
# Input Device Drivers
#
CONFIG_INPUT_KEYBOARD=y
# CONFIG_KEYBOARD_ADP5588 is not set
# CONFIG_KEYBOARD_ADP5589 is not set
CONFIG_KEYBOARD_ATKBD=y
# CONFIG_KEYBOARD_QT1050 is not set
# CONFIG_KEYBOARD_QT1070 is not set
# CONFIG_KEYBOARD_QT2160 is not set
# CONFIG_KEYBOARD_DLINK_DIR685 is not set
# CONFIG_KEYBOARD_LKKBD is not set
# CONFIG_KEYBOARD_GPIO is not set
# CONFIG_KEYBOARD_GPIO_POLLED is not set
# CONFIG_KEYBOARD_TCA6416 is not set
# CONFIG_KEYBOARD_TCA8418 is not set
# CONFIG_KEYBOARD_MATRIX is not set
# CONFIG_KEYBOARD_LM8323 is not set
# CONFIG_KEYBOARD_LM8333 is not set
# CONFIG_KEYBOARD_MAX7359 is not set
# CONFIG_KEYBOARD_MCS is not set
# CONFIG_KEYBOARD_MPR121 is not set
# CONFIG_KEYBOARD_NEWTON is not set
# CONFIG_KEYBOARD_OPENCORES is not set
# CONFIG_KEYBOARD_PINEPHONE is not set
# CONFIG_KEYBOARD_SAMSUNG is not set
# CONFIG_KEYBOARD_STOWAWAY is not set
# CONFIG_KEYBOARD_SUNKBD is not set
# CONFIG_KEYBOARD_TM2_TOUCHKEY is not set
# CONFIG_KEYBOARD_XTKBD is not set
# CONFIG_KEYBOARD_CYPRESS_SF is not set
# CONFIG_INPUT_MOUSE is not set
# CONFIG_INPUT_JOYSTICK is not set
# CONFIG_INPUT_TABLET is not set
CONFIG_INPUT_TOUCHSCREEN=y
# CONFIG_TOUCHSCREEN_AD7879 is not set
# CONFIG_TOUCHSCREEN_ATMEL_MXT is not set
# CONFIG_TOUCHSCREEN_AUO_PIXCIR is not set
# CONFIG_TOUCHSCREEN_BU21013 is not set
# CONFIG_TOUCHSCREEN_BU21029 is not set
# CONFIG_TOUCHSCREEN_CY8CTMA140 is not set
# CONFIG_TOUCHSCREEN_CY8CTMG110 is not set
# CONFIG_TOUCHSCREEN_CYTTSP_CORE is not set
# CONFIG_TOUCHSCREEN_CYTTSP4_CORE is not set
# CONFIG_TOUCHSCREEN_DYNAPRO is not set
# CONFIG_TOUCHSCREEN_HAMPSHIRE is not set
# CONFIG_TOUCHSCREEN_EETI is not set
# CONFIG_TOUCHSCREEN_EGALAX_SERIAL is not set
# CONFIG_TOUCHSCREEN_EXC3000 is not set
# CONFIG_TOUCHSCREEN_FUJITSU is not set
# CONFIG_TOUCHSCREEN_GOODIX is not set
# CONFIG_TOUCHSCREEN_HIDEEP is not set
# CONFIG_TOUCHSCREEN_HYCON_HY46XX is not set
# CONFIG_TOUCHSCREEN_ILI210X is not set
# CONFIG_TOUCHSCREEN_ILITEK is not set
# CONFIG_TOUCHSCREEN_S6SY761 is not set
# CONFIG_TOUCHSCREEN_GUNZE is not set
# CONFIG_TOUCHSCREEN_EKTF2127 is not set
# CONFIG_TOUCHSCREEN_ELAN is not set
# CONFIG_TOUCHSCREEN_ELO is not set
# CONFIG_TOUCHSCREEN_WACOM_W8001 is not set
# CONFIG_TOUCHSCREEN_WACOM_I2C is not set
# CONFIG_TOUCHSCREEN_MAX11801 is not set
# CONFIG_TOUCHSCREEN_MCS5000 is not set
# CONFIG_TOUCHSCREEN_MMS114 is not set
# CONFIG_TOUCHSCREEN_MELFAS_MIP4 is not set
# CONFIG_TOUCHSCREEN_MSG2638 is not set
# CONFIG_TOUCHSCREEN_MTOUCH is not set
# CONFIG_TOUCHSCREEN_IMAGIS is not set
# CONFIG_TOUCHSCREEN_INEXIO is not set
# CONFIG_TOUCHSCREEN_MK712 is not set
# CONFIG_TOUCHSCREEN_HTCPEN is not set
# CONFIG_TOUCHSCREEN_PENMOUNT is not set
# CONFIG_TOUCHSCREEN_EDT_FT5X06 is not set
# CONFIG_TOUCHSCREEN_TOUCHRIGHT is not set
# CONFIG_TOUCHSCREEN_TOUCHWIN is not set
# CONFIG_TOUCHSCREEN_PIXCIR is not set
# CONFIG_TOUCHSCREEN_WDT87XX_I2C is not set
# CONFIG_TOUCHSCREEN_USB_COMPOSITE is not set
# CONFIG_TOUCHSCREEN_TOUCHIT213 is not set
# CONFIG_TOUCHSCREEN_TSC_SERIO is not set
# CONFIG_TOUCHSCREEN_TSC2004 is not set
# CONFIG_TOUCHSCREEN_TSC2007 is not set
# CONFIG_TOUCHSCREEN_RM_TS is not set
# CONFIG_TOUCHSCREEN_SILEAD is not set
# CONFIG_TOUCHSCREEN_SIS_I2C is not set
# CONFIG_TOUCHSCREEN_ST1232 is not set
# CONFIG_TOUCHSCREEN_STMFTS is not set
# CONFIG_TOUCHSCREEN_SX8654 is not set
# CONFIG_TOUCHSCREEN_TPS6507X is not set
# CONFIG_TOUCHSCREEN_ZET6223 is not set
# CONFIG_TOUCHSCREEN_ZFORCE is not set
# CONFIG_TOUCHSCREEN_ROHM_BU21023 is not set
# CONFIG_TOUCHSCREEN_IQS5XX is not set
# CONFIG_TOUCHSCREEN_ZINITIX is not set
# CONFIG_INPUT_MISC is not set
# CONFIG_RMI4_CORE is not set

#
# Hardware I/O ports
#
CONFIG_SERIO=y
CONFIG_SERIO_SERPORT=m
CONFIG_SERIO_SA1111=y
CONFIG_SERIO_LIBPS2=y
# CONFIG_SERIO_RAW is not set
# CONFIG_SERIO_ALTERA_PS2 is not set
# CONFIG_SERIO_PS2MULT is not set
# CONFIG_SERIO_ARC_PS2 is not set
# CONFIG_SERIO_GPIO_PS2 is not set
# CONFIG_USERIO is not set
# CONFIG_GAMEPORT is not set
# end of Hardware I/O ports
# end of Input device support

#
# Character devices
#
CONFIG_TTY=y
CONFIG_VT=y
CONFIG_CONSOLE_TRANSLATIONS=y
CONFIG_VT_CONSOLE=y
CONFIG_VT_CONSOLE_SLEEP=y
CONFIG_HW_CONSOLE=y
CONFIG_VT_HW_CONSOLE_BINDING=y
CONFIG_UNIX98_PTYS=y
CONFIG_LEGACY_PTYS=y
CONFIG_LEGACY_PTY_COUNT=64
CONFIG_LDISC_AUTOLOAD=y

#
# Serial drivers
#
CONFIG_SERIAL_8250=y
CONFIG_SERIAL_8250_DEPRECATED_OPTIONS=y
CONFIG_SERIAL_8250_16550A_VARIANTS=y
# CONFIG_SERIAL_8250_FINTEK is not set
# CONFIG_SERIAL_8250_CONSOLE is not set
CONFIG_SERIAL_8250_CS=y
CONFIG_SERIAL_8250_NR_UARTS=4
CONFIG_SERIAL_8250_RUNTIME_UARTS=4
# CONFIG_SERIAL_8250_EXTENDED is not set
# CONFIG_SERIAL_8250_DW is not set
# CONFIG_SERIAL_8250_RT288X is not set

#
# Non-8250 serial port support
#
# CONFIG_SERIAL_EARLYCON_ARM_SEMIHOST is not set
CONFIG_SERIAL_SA1100=y
CONFIG_SERIAL_SA1100_CONSOLE=y
# CONFIG_SERIAL_UARTLITE is not set
CONFIG_SERIAL_CORE=y
CONFIG_SERIAL_CORE_CONSOLE=y
# CONFIG_SERIAL_SCCNXP is not set
# CONFIG_SERIAL_SC16IS7XX is not set
# CONFIG_SERIAL_ALTERA_JTAGUART is not set
# CONFIG_SERIAL_ALTERA_UART is not set
# CONFIG_SERIAL_ARC is not set
# CONFIG_SERIAL_FSL_LPUART is not set
# CONFIG_SERIAL_FSL_LINFLEXUART is not set
# CONFIG_SERIAL_ST_ASC is not set
# CONFIG_SERIAL_SPRD is not set
# end of Serial drivers

CONFIG_SERIAL_MCTRL_GPIO=y
CONFIG_SERIAL_NONSTANDARD=y
# CONFIG_MOXA_INTELLIO is not set
# CONFIG_N_HDLC is not set
# CONFIG_N_GSM is not set
# CONFIG_NULL_TTY is not set
# CONFIG_HVC_DCC is not set
# CONFIG_SERIAL_DEV_BUS is not set
# CONFIG_VIRTIO_CONSOLE is not set
# CONFIG_IPMI_HANDLER is not set
CONFIG_HW_RANDOM=m
# CONFIG_HW_RANDOM_TIMERIOMEM is not set
# CONFIG_HW_RANDOM_BA431 is not set
# CONFIG_HW_RANDOM_XIPHERA is not set
# CONFIG_DTLK is not set

#
# PCMCIA character devices
#
# CONFIG_SYNCLINK_CS is not set
# CONFIG_CARDMAN_4000 is not set
# CONFIG_CARDMAN_4040 is not set
# CONFIG_SCR24X is not set
# CONFIG_IPWIRELESS is not set
# end of PCMCIA character devices

CONFIG_DEVMEM=y
CONFIG_DEVPORT=y
# CONFIG_TCG_TPM is not set
# CONFIG_XILLYUSB is not set
CONFIG_RANDOM_TRUST_CPU=y
CONFIG_RANDOM_TRUST_BOOTLOADER=y
# end of Character devices

#
# I2C support
#
CONFIG_I2C=y
CONFIG_I2C_BOARDINFO=y
CONFIG_I2C_COMPAT=y
CONFIG_I2C_CHARDEV=y
# CONFIG_I2C_MUX is not set
CONFIG_I2C_HELPER_AUTO=y

#
# I2C Hardware Bus support
#

#
# I2C system bus drivers (mostly embedded / system-on-chip)
#
# CONFIG_I2C_CBUS_GPIO is not set
# CONFIG_I2C_DESIGNWARE_PLATFORM is not set
# CONFIG_I2C_EMEV2 is not set
# CONFIG_I2C_GPIO is not set
# CONFIG_I2C_OCORES is not set
# CONFIG_I2C_PCA_PLATFORM is not set
# CONFIG_I2C_SIMTEC is not set
# CONFIG_I2C_XILINX is not set

#
# External I2C/SMBus adapter drivers
#
# CONFIG_I2C_DIOLAN_U2C is not set
# CONFIG_I2C_CP2615 is not set
# CONFIG_I2C_ROBOTFUZZ_OSIF is not set
# CONFIG_I2C_TAOS_EVM is not set
# CONFIG_I2C_TINY_USB is not set

#
# Other I2C/SMBus bus drivers
#
# CONFIG_I2C_ELEKTOR is not set
# CONFIG_I2C_PCA_ISA is not set
# CONFIG_I2C_VIRTIO is not set
# end of I2C Hardware Bus support

# CONFIG_I2C_STUB is not set
# CONFIG_I2C_SLAVE is not set
# CONFIG_I2C_DEBUG_CORE is not set
# CONFIG_I2C_DEBUG_ALGO is not set
# CONFIG_I2C_DEBUG_BUS is not set
# end of I2C support

# CONFIG_I3C is not set
# CONFIG_SPI is not set
# CONFIG_SPMI is not set
# CONFIG_HSI is not set
CONFIG_PPS=y
# CONFIG_PPS_DEBUG is not set
# CONFIG_NTP_PPS is not set

#
# PPS clients support
#
# CONFIG_PPS_CLIENT_KTIMER is not set
# CONFIG_PPS_CLIENT_LDISC is not set
# CONFIG_PPS_CLIENT_GPIO is not set

#
# PPS generators support
#

#
# PTP clock support
#
CONFIG_PTP_1588_CLOCK=y
CONFIG_PTP_1588_CLOCK_OPTIONAL=y

#
# Enable PHYLIB and NETWORK_PHY_TIMESTAMPING to see the additional clocks.
#
# CONFIG_PTP_1588_CLOCK_IDT82P33 is not set
# CONFIG_PTP_1588_CLOCK_IDTCM is not set
# end of PTP clock support

# CONFIG_PINCTRL is not set
CONFIG_ARCH_HAVE_CUSTOM_GPIO_H=y
CONFIG_GPIOLIB=y
CONFIG_GPIOLIB_FASTPATH_LIMIT=512
# CONFIG_DEBUG_GPIO is not set
CONFIG_GPIO_CDEV=y
CONFIG_GPIO_CDEV_V1=y

#
# Memory mapped GPIO drivers
#
# CONFIG_GPIO_DWAPB is not set
# CONFIG_GPIO_GENERIC_PLATFORM is not set
# CONFIG_GPIO_MB86S7X is not set
# CONFIG_GPIO_MPC8XXX is not set
CONFIG_GPIO_REG=y
# CONFIG_GPIO_AMD_FCH is not set
# end of Memory mapped GPIO drivers

#
# I2C GPIO expanders
#
# CONFIG_GPIO_MAX7300 is not set
# CONFIG_GPIO_MAX732X is not set
# CONFIG_GPIO_PCA953X is not set
# CONFIG_GPIO_PCA9570 is not set
# CONFIG_GPIO_PCF857X is not set
# CONFIG_GPIO_TPIC2810 is not set
# end of I2C GPIO expanders

#
# MFD GPIO expanders
#
# CONFIG_HTC_EGPIO is not set
# end of MFD GPIO expanders

#
# USB GPIO expanders
#
# end of USB GPIO expanders

#
# Virtual GPIO drivers
#
# CONFIG_GPIO_AGGREGATOR is not set
# CONFIG_GPIO_MOCKUP is not set
# CONFIG_GPIO_SIM is not set
# end of Virtual GPIO drivers

# CONFIG_W1 is not set
# CONFIG_POWER_RESET is not set
# CONFIG_POWER_SUPPLY is not set
CONFIG_HWMON=y
# CONFIG_HWMON_DEBUG_CHIP is not set

#
# Native drivers
#
# CONFIG_SENSORS_AD7414 is not set
# CONFIG_SENSORS_AD7418 is not set
# CONFIG_SENSORS_ADM1021 is not set
# CONFIG_SENSORS_ADM1025 is not set
# CONFIG_SENSORS_ADM1026 is not set
# CONFIG_SENSORS_ADM1029 is not set
# CONFIG_SENSORS_ADM1031 is not set
# CONFIG_SENSORS_ADM1177 is not set
# CONFIG_SENSORS_ADM9240 is not set
# CONFIG_SENSORS_ADT7410 is not set
# CONFIG_SENSORS_ADT7411 is not set
# CONFIG_SENSORS_ADT7462 is not set
# CONFIG_SENSORS_ADT7470 is not set
# CONFIG_SENSORS_ADT7475 is not set
# CONFIG_SENSORS_AHT10 is not set
# CONFIG_SENSORS_AS370 is not set
# CONFIG_SENSORS_ASC7621 is not set
# CONFIG_SENSORS_AXI_FAN_CONTROL is not set
# CONFIG_SENSORS_ATXP1 is not set
# CONFIG_SENSORS_CORSAIR_CPRO is not set
# CONFIG_SENSORS_CORSAIR_PSU is not set
# CONFIG_SENSORS_DS620 is not set
# CONFIG_SENSORS_DS1621 is not set
# CONFIG_SENSORS_F71805F is not set
# CONFIG_SENSORS_F71882FG is not set
# CONFIG_SENSORS_F75375S is not set
# CONFIG_SENSORS_FTSTEUTATES is not set
# CONFIG_SENSORS_GL518SM is not set
# CONFIG_SENSORS_GL520SM is not set
# CONFIG_SENSORS_G760A is not set
# CONFIG_SENSORS_G762 is not set
# CONFIG_SENSORS_HIH6130 is not set
# CONFIG_SENSORS_IT87 is not set
# CONFIG_SENSORS_JC42 is not set
# CONFIG_SENSORS_POWR1220 is not set
# CONFIG_SENSORS_LINEAGE is not set
# CONFIG_SENSORS_LTC2945 is not set
# CONFIG_SENSORS_LTC2947_I2C is not set
# CONFIG_SENSORS_LTC2990 is not set
# CONFIG_SENSORS_LTC2992 is not set
# CONFIG_SENSORS_LTC4151 is not set
# CONFIG_SENSORS_LTC4215 is not set
# CONFIG_SENSORS_LTC4222 is not set
# CONFIG_SENSORS_LTC4245 is not set
# CONFIG_SENSORS_LTC4260 is not set
# CONFIG_SENSORS_LTC4261 is not set
# CONFIG_SENSORS_MAX127 is not set
# CONFIG_SENSORS_MAX16065 is not set
# CONFIG_SENSORS_MAX1619 is not set
# CONFIG_SENSORS_MAX1668 is not set
# CONFIG_SENSORS_MAX197 is not set
# CONFIG_SENSORS_MAX31730 is not set
# CONFIG_SENSORS_MAX31760 is not set
# CONFIG_SENSORS_MAX6620 is not set
# CONFIG_SENSORS_MAX6621 is not set
# CONFIG_SENSORS_MAX6639 is not set
# CONFIG_SENSORS_MAX6642 is not set
# CONFIG_SENSORS_MAX6650 is not set
# CONFIG_SENSORS_MAX6697 is not set
# CONFIG_SENSORS_MAX31790 is not set
# CONFIG_SENSORS_MCP3021 is not set
# CONFIG_SENSORS_TC654 is not set
# CONFIG_SENSORS_TPS23861 is not set
# CONFIG_SENSORS_MR75203 is not set
# CONFIG_SENSORS_LM63 is not set
# CONFIG_SENSORS_LM73 is not set
# CONFIG_SENSORS_LM75 is not set
# CONFIG_SENSORS_LM77 is not set
# CONFIG_SENSORS_LM78 is not set
# CONFIG_SENSORS_LM80 is not set
# CONFIG_SENSORS_LM83 is not set
# CONFIG_SENSORS_LM85 is not set
# CONFIG_SENSORS_LM87 is not set
# CONFIG_SENSORS_LM90 is not set
# CONFIG_SENSORS_LM92 is not set
# CONFIG_SENSORS_LM93 is not set
# CONFIG_SENSORS_LM95234 is not set
# CONFIG_SENSORS_LM95241 is not set
# CONFIG_SENSORS_LM95245 is not set
# CONFIG_SENSORS_PC87360 is not set
# CONFIG_SENSORS_PC87427 is not set
# CONFIG_SENSORS_NCT6683 is not set
# CONFIG_SENSORS_NCT6775 is not set
# CONFIG_SENSORS_NCT6775_I2C is not set
# CONFIG_SENSORS_NCT7802 is not set
# CONFIG_SENSORS_NCT7904 is not set
# CONFIG_SENSORS_NPCM7XX is not set
# CONFIG_SENSORS_OCC_P8_I2C is not set
# CONFIG_SENSORS_PCF8591 is not set
# CONFIG_PMBUS is not set
# CONFIG_SENSORS_SBTSI is not set
# CONFIG_SENSORS_SBRMI is not set
# CONFIG_SENSORS_SHT15 is not set
# CONFIG_SENSORS_SHT21 is not set
# CONFIG_SENSORS_SHT3x is not set
# CONFIG_SENSORS_SHT4x is not set
# CONFIG_SENSORS_SHTC1 is not set
# CONFIG_SENSORS_DME1737 is not set
# CONFIG_SENSORS_EMC1403 is not set
# CONFIG_SENSORS_EMC2103 is not set
# CONFIG_SENSORS_EMC2305 is not set
# CONFIG_SENSORS_EMC6W201 is not set
# CONFIG_SENSORS_SMSC47M1 is not set
# CONFIG_SENSORS_SMSC47M192 is not set
# CONFIG_SENSORS_SMSC47B397 is not set
# CONFIG_SENSORS_SCH5627 is not set
# CONFIG_SENSORS_SCH5636 is not set
# CONFIG_SENSORS_STTS751 is not set
# CONFIG_SENSORS_SMM665 is not set
# CONFIG_SENSORS_ADC128D818 is not set
# CONFIG_SENSORS_ADS7828 is not set
# CONFIG_SENSORS_AMC6821 is not set
# CONFIG_SENSORS_INA209 is not set
# CONFIG_SENSORS_INA2XX is not set
# CONFIG_SENSORS_INA238 is not set
# CONFIG_SENSORS_INA3221 is not set
# CONFIG_SENSORS_TC74 is not set
# CONFIG_SENSORS_THMC50 is not set
# CONFIG_SENSORS_TMP102 is not set
# CONFIG_SENSORS_TMP103 is not set
# CONFIG_SENSORS_TMP108 is not set
# CONFIG_SENSORS_TMP401 is not set
# CONFIG_SENSORS_TMP421 is not set
# CONFIG_SENSORS_TMP464 is not set
# CONFIG_SENSORS_TMP513 is not set
# CONFIG_SENSORS_VT1211 is not set
# CONFIG_SENSORS_W83773G is not set
# CONFIG_SENSORS_W83781D is not set
# CONFIG_SENSORS_W83791D is not set
# CONFIG_SENSORS_W83792D is not set
# CONFIG_SENSORS_W83793 is not set
# CONFIG_SENSORS_W83795 is not set
# CONFIG_SENSORS_W83L785TS is not set
# CONFIG_SENSORS_W83L786NG is not set
# CONFIG_SENSORS_W83627HF is not set
# CONFIG_SENSORS_W83627EHF is not set
# CONFIG_THERMAL is not set
CONFIG_WATCHDOG=y
# CONFIG_WATCHDOG_CORE is not set
# CONFIG_WATCHDOG_NOWAYOUT is not set
CONFIG_WATCHDOG_HANDLE_BOOT_ENABLED=y
CONFIG_WATCHDOG_OPEN_TIMEOUT=0
# CONFIG_WATCHDOG_SYSFS is not set
# CONFIG_WATCHDOG_HRTIMER_PRETIMEOUT is not set

#
# Watchdog Pretimeout Governors
#

#
# Watchdog Device Drivers
#
# CONFIG_SOFT_WATCHDOG is not set
# CONFIG_XILINX_WATCHDOG is not set
# CONFIG_ZIIRAVE_WATCHDOG is not set
# CONFIG_CADENCE_WATCHDOG is not set
# CONFIG_FTWDT010_WATCHDOG is not set
CONFIG_SA1100_WATCHDOG=m
# CONFIG_DW_WATCHDOG is not set
# CONFIG_MAX63XX_WATCHDOG is not set
# CONFIG_MEN_A21_WDT is not set

#
# ISA-based Watchdog Cards
#
# CONFIG_PCWATCHDOG is not set
# CONFIG_MIXCOMWD is not set
# CONFIG_WDT is not set

#
# USB-based Watchdog Cards
#
# CONFIG_USBPCWATCHDOG is not set
CONFIG_SSB_POSSIBLE=y
# CONFIG_SSB is not set
CONFIG_BCMA_POSSIBLE=y
# CONFIG_BCMA is not set

#
# Multifunction device drivers
#
# CONFIG_MFD_AS3711 is not set
# CONFIG_PMIC_ADP5520 is not set
# CONFIG_MFD_AAT2870_CORE is not set
# CONFIG_MFD_BCM590XX is not set
# CONFIG_MFD_BD9571MWV is not set
# CONFIG_MFD_AXP20X_I2C is not set
# CONFIG_MFD_MADERA is not set
# CONFIG_MFD_ASIC3 is not set
# CONFIG_PMIC_DA903X is not set
# CONFIG_MFD_DA9052_I2C is not set
# CONFIG_MFD_DA9055 is not set
# CONFIG_MFD_DA9062 is not set
# CONFIG_MFD_DA9063 is not set
# CONFIG_MFD_DA9150 is not set
# CONFIG_MFD_DLN2 is not set
# CONFIG_MFD_MC13XXX_I2C is not set
# CONFIG_MFD_MP2629 is not set
# CONFIG_HTC_PASIC3 is not set
# CONFIG_HTC_I2CPLD is not set
# CONFIG_MFD_IQS62X is not set
# CONFIG_MFD_KEMPLD is not set
# CONFIG_MFD_88PM800 is not set
# CONFIG_MFD_88PM805 is not set
# CONFIG_MFD_88PM860X is not set
# CONFIG_MFD_MAX14577 is not set
# CONFIG_MFD_MAX77693 is not set
# CONFIG_MFD_MAX77843 is not set
# CONFIG_MFD_MAX8907 is not set
# CONFIG_MFD_MAX8925 is not set
# CONFIG_MFD_MAX8997 is not set
# CONFIG_MFD_MAX8998 is not set
# CONFIG_MFD_MT6360 is not set
# CONFIG_MFD_MT6370 is not set
# CONFIG_MFD_MT6397 is not set
# CONFIG_MFD_MENF21BMC is not set
# CONFIG_MFD_VIPERBOARD is not set
# CONFIG_MFD_RETU is not set
# CONFIG_MFD_PCF50633 is not set
# CONFIG_MFD_PM8XXX is not set
# CONFIG_MFD_SY7636A is not set
# CONFIG_MFD_RT4831 is not set
# CONFIG_MFD_RT5033 is not set
# CONFIG_MFD_RT5120 is not set
# CONFIG_MFD_RC5T583 is not set
# CONFIG_MFD_SI476X_CORE is not set
# CONFIG_MFD_SM501 is not set
# CONFIG_MFD_SKY81452 is not set
# CONFIG_MFD_SYSCON is not set
# CONFIG_MFD_TI_AM335X_TSCADC is not set
# CONFIG_MFD_LP3943 is not set
# CONFIG_MFD_LP8788 is not set
# CONFIG_MFD_TI_LMU is not set
# CONFIG_MFD_PALMAS is not set
# CONFIG_TPS6105X is not set
# CONFIG_TPS65010 is not set
# CONFIG_TPS6507X is not set
# CONFIG_MFD_TPS65086 is not set
# CONFIG_MFD_TPS65090 is not set
# CONFIG_MFD_TI_LP873X is not set
# CONFIG_MFD_TPS6586X is not set
# CONFIG_MFD_TPS65910 is not set
# CONFIG_MFD_TPS65912_I2C is not set
# CONFIG_TWL4030_CORE is not set
# CONFIG_TWL6040_CORE is not set
# CONFIG_MFD_WL1273_CORE is not set
# CONFIG_MFD_LM3533 is not set
# CONFIG_MFD_T7L66XB is not set
# CONFIG_MFD_TC6387XB is not set
# CONFIG_MFD_TC6393XB is not set
# CONFIG_MFD_TQMX86 is not set
# CONFIG_MFD_ARIZONA_I2C is not set
# CONFIG_MFD_WM8400 is not set
# CONFIG_MFD_WM831X_I2C is not set
# CONFIG_MFD_WM8350_I2C is not set
# CONFIG_MFD_WM8994 is not set
# CONFIG_MFD_ATC260X_I2C is not set

#
# Multimedia Capabilities Port drivers
#
# CONFIG_MCP_SA11X0 is not set
# end of Multimedia Capabilities Port drivers
# end of Multifunction device drivers

CONFIG_REGULATOR=y
# CONFIG_REGULATOR_DEBUG is not set
CONFIG_REGULATOR_FIXED_VOLTAGE=y
# CONFIG_REGULATOR_VIRTUAL_CONSUMER is not set
# CONFIG_REGULATOR_USERSPACE_CONSUMER is not set
# CONFIG_REGULATOR_88PG86X is not set
# CONFIG_REGULATOR_AD5398 is not set
# CONFIG_REGULATOR_DA9210 is not set
# CONFIG_REGULATOR_DA9211 is not set
# CONFIG_REGULATOR_FAN53555 is not set
# CONFIG_REGULATOR_GPIO is not set
# CONFIG_REGULATOR_ISL9305 is not set
# CONFIG_REGULATOR_ISL6271A is not set
# CONFIG_REGULATOR_LP3971 is not set
# CONFIG_REGULATOR_LP3972 is not set
# CONFIG_REGULATOR_LP872X is not set
# CONFIG_REGULATOR_LP8755 is not set
# CONFIG_REGULATOR_LTC3589 is not set
# CONFIG_REGULATOR_LTC3676 is not set
# CONFIG_REGULATOR_MAX1586 is not set
# CONFIG_REGULATOR_MAX8649 is not set
# CONFIG_REGULATOR_MAX8660 is not set
# CONFIG_REGULATOR_MAX8893 is not set
# CONFIG_REGULATOR_MAX8952 is not set
# CONFIG_REGULATOR_MAX20086 is not set
# CONFIG_REGULATOR_MAX77826 is not set
# CONFIG_REGULATOR_MP8859 is not set
# CONFIG_REGULATOR_MT6311 is not set
# CONFIG_REGULATOR_PCA9450 is not set
# CONFIG_REGULATOR_PV88060 is not set
# CONFIG_REGULATOR_PV88080 is not set
# CONFIG_REGULATOR_PV88090 is not set
# CONFIG_REGULATOR_RT4801 is not set
# CONFIG_REGULATOR_RT5190A is not set
# CONFIG_REGULATOR_RT5759 is not set
# CONFIG_REGULATOR_RT6160 is not set
# CONFIG_REGULATOR_RT6245 is not set
# CONFIG_REGULATOR_RTQ2134 is not set
# CONFIG_REGULATOR_RTMV20 is not set
# CONFIG_REGULATOR_RTQ6752 is not set
# CONFIG_REGULATOR_SLG51000 is not set
# CONFIG_REGULATOR_TPS51632 is not set
# CONFIG_REGULATOR_TPS62360 is not set
# CONFIG_REGULATOR_TPS65023 is not set
# CONFIG_REGULATOR_TPS6507X is not set
# CONFIG_REGULATOR_TPS65132 is not set
# CONFIG_RC_CORE is not set

#
# CEC support
#
# CONFIG_MEDIA_CEC_SUPPORT is not set
# end of CEC support

# CONFIG_MEDIA_SUPPORT is not set

#
# Graphics support
#
# CONFIG_DRM is not set

#
# ARM devices
#
# end of ARM devices

#
# Frame buffer Devices
#
CONFIG_FB_CMDLINE=y
CONFIG_FB_NOTIFY=y
CONFIG_FB=y
# CONFIG_FIRMWARE_EDID is not set
CONFIG_FB_CFB_FILLRECT=y
CONFIG_FB_CFB_COPYAREA=y
CONFIG_FB_CFB_IMAGEBLIT=y
# CONFIG_FB_FOREIGN_ENDIAN is not set
# CONFIG_FB_MODE_HELPERS is not set
# CONFIG_FB_TILEBLITTING is not set

#
# Frame buffer hardware drivers
#
CONFIG_FB_SA1100=y
# CONFIG_FB_OPENCORES is not set
# CONFIG_FB_S1D13XXX is not set
# CONFIG_FB_SMSCUFX is not set
# CONFIG_FB_UDL is not set
# CONFIG_FB_IBM_GXT4500 is not set
# CONFIG_FB_VIRTUAL is not set
# CONFIG_FB_METRONOME is not set
# CONFIG_FB_SIMPLE is not set
# CONFIG_FB_SSD1307 is not set
# end of Frame buffer Devices

#
# Backlight & LCD device support
#
# CONFIG_LCD_CLASS_DEVICE is not set
# CONFIG_BACKLIGHT_CLASS_DEVICE is not set
# end of Backlight & LCD device support

#
# Console display driver support
#
# CONFIG_MDA_CONSOLE is not set
CONFIG_DUMMY_CONSOLE=y
CONFIG_FRAMEBUFFER_CONSOLE=y
# CONFIG_FRAMEBUFFER_CONSOLE_LEGACY_ACCELERATION is not set
# CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY is not set
# CONFIG_FRAMEBUFFER_CONSOLE_ROTATION is not set
# CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER is not set
# end of Console display driver support

# CONFIG_LOGO is not set
# end of Graphics support

CONFIG_SOUND=y
# CONFIG_SND is not set

#
# HID support
#
CONFIG_HID=y
# CONFIG_HID_BATTERY_STRENGTH is not set
# CONFIG_HIDRAW is not set
# CONFIG_UHID is not set
CONFIG_HID_GENERIC=y

#
# Special HID drivers
#
CONFIG_HID_A4TECH=y
# CONFIG_HID_ACRUX is not set
CONFIG_HID_APPLE=y
# CONFIG_HID_AUREAL is not set
CONFIG_HID_BELKIN=y
CONFIG_HID_CHERRY=y
# CONFIG_HID_COUGAR is not set
# CONFIG_HID_MACALLY is not set
# CONFIG_HID_CMEDIA is not set
CONFIG_HID_CYPRESS=y
# CONFIG_HID_DRAGONRISE is not set
# CONFIG_HID_EMS_FF is not set
# CONFIG_HID_ELECOM is not set
CONFIG_HID_EZKEY=y
# CONFIG_HID_GEMBIRD is not set
# CONFIG_HID_GFRM is not set
# CONFIG_HID_GLORIOUS is not set
# CONFIG_HID_VIVALDI is not set
# CONFIG_HID_KEYTOUCH is not set
# CONFIG_HID_KYE is not set
# CONFIG_HID_WALTOP is not set
# CONFIG_HID_VIEWSONIC is not set
# CONFIG_HID_VRC2 is not set
# CONFIG_HID_XIAOMI is not set
# CONFIG_HID_GYRATION is not set
# CONFIG_HID_ICADE is not set
CONFIG_HID_ITE=y
# CONFIG_HID_JABRA is not set
# CONFIG_HID_TWINHAN is not set
CONFIG_HID_KENSINGTON=y
# CONFIG_HID_LCPOWER is not set
# CONFIG_HID_LED is not set
# CONFIG_HID_LENOVO is not set
# CONFIG_HID_MAGICMOUSE is not set
# CONFIG_HID_MALTRON is not set
# CONFIG_HID_MAYFLASH is not set
CONFIG_HID_REDRAGON=y
CONFIG_HID_MICROSOFT=y
CONFIG_HID_MONTEREY=y
# CONFIG_HID_MULTITOUCH is not set
# CONFIG_HID_NINTENDO is not set
# CONFIG_HID_NTI is not set
# CONFIG_HID_ORTEK is not set
# CONFIG_HID_PANTHERLORD is not set
# CONFIG_HID_PETALYNX is not set
# CONFIG_HID_PICOLCD is not set
# CONFIG_HID_PLANTRONICS is not set
# CONFIG_HID_PXRC is not set
# CONFIG_HID_RAZER is not set
# CONFIG_HID_PRIMAX is not set
# CONFIG_HID_SAITEK is not set
# CONFIG_HID_SEMITEK is not set
# CONFIG_HID_SPEEDLINK is not set
# CONFIG_HID_STEAM is not set
# CONFIG_HID_STEELSERIES is not set
# CONFIG_HID_SUNPLUS is not set
# CONFIG_HID_RMI is not set
# CONFIG_HID_GREENASIA is not set
# CONFIG_HID_SMARTJOYPLUS is not set
# CONFIG_HID_TIVO is not set
# CONFIG_HID_TOPSEED is not set
# CONFIG_HID_TOPRE is not set
# CONFIG_HID_THINGM is not set
# CONFIG_HID_UDRAW_PS3 is not set
# CONFIG_HID_WIIMOTE is not set
# CONFIG_HID_XINMO is not set
# CONFIG_HID_ZEROPLUS is not set
# CONFIG_HID_ZYDACRON is not set
# CONFIG_HID_SENSOR_HUB is not set
# CONFIG_HID_ALPS is not set
# end of Special HID drivers

#
# USB HID support
#
# CONFIG_USB_HID is not set
# CONFIG_HID_PID is not set
# end of USB HID support

#
# I2C HID support
#
# end of I2C HID support
# end of HID support

CONFIG_USB_OHCI_LITTLE_ENDIAN=y
CONFIG_USB_SUPPORT=y
CONFIG_USB_COMMON=m
# CONFIG_USB_LED_TRIG is not set
# CONFIG_USB_ULPI_BUS is not set
# CONFIG_USB_CONN_GPIO is not set
CONFIG_USB_ARCH_HAS_HCD=y
CONFIG_USB=m
# CONFIG_USB_ANNOUNCE_NEW_DEVICES is not set

#
# Miscellaneous USB options
#
CONFIG_USB_DEFAULT_PERSIST=y
# CONFIG_USB_FEW_INIT_RETRIES is not set
# CONFIG_USB_DYNAMIC_MINORS is not set
# CONFIG_USB_OTG is not set
# CONFIG_USB_OTG_PRODUCTLIST is not set
# CONFIG_USB_LEDS_TRIGGER_USBPORT is not set
CONFIG_USB_AUTOSUSPEND_DELAY=2
CONFIG_USB_MON=m

#
# USB Host Controller Drivers
#
# CONFIG_USB_C67X00_HCD is not set
# CONFIG_USB_XHCI_HCD is not set
# CONFIG_USB_EHCI_HCD is not set
# CONFIG_USB_OXU210HP_HCD is not set
# CONFIG_USB_ISP116X_HCD is not set
# CONFIG_USB_FOTG210_HCD is not set
CONFIG_USB_OHCI_HCD=m
# CONFIG_USB_OHCI_HCD_PLATFORM is not set
# CONFIG_USB_SL811_HCD is not set
# CONFIG_USB_R8A66597_HCD is not set
# CONFIG_USB_HCD_TEST_MODE is not set

#
# USB Device Class drivers
#
# CONFIG_USB_ACM is not set
# CONFIG_USB_PRINTER is not set
# CONFIG_USB_WDM is not set
# CONFIG_USB_TMC is not set

#
# NOTE: USB_STORAGE depends on SCSI but BLK_DEV_SD may
#

#
# also be needed; see USB_STORAGE Help for more info
#
CONFIG_USB_STORAGE=m
# CONFIG_USB_STORAGE_DEBUG is not set
# CONFIG_USB_STORAGE_REALTEK is not set
# CONFIG_USB_STORAGE_DATAFAB is not set
# CONFIG_USB_STORAGE_FREECOM is not set
# CONFIG_USB_STORAGE_ISD200 is not set
# CONFIG_USB_STORAGE_USBAT is not set
# CONFIG_USB_STORAGE_SDDR09 is not set
# CONFIG_USB_STORAGE_SDDR55 is not set
# CONFIG_USB_STORAGE_JUMPSHOT is not set
# CONFIG_USB_STORAGE_ALAUDA is not set
# CONFIG_USB_STORAGE_ONETOUCH is not set
# CONFIG_USB_STORAGE_KARMA is not set
# CONFIG_USB_STORAGE_CYPRESS_ATACB is not set
# CONFIG_USB_STORAGE_ENE_UB6250 is not set
# CONFIG_USB_UAS is not set

#
# USB Imaging devices
#
# CONFIG_USB_MDC800 is not set
# CONFIG_USB_MICROTEK is not set
# CONFIG_USBIP_CORE is not set
# CONFIG_USB_CDNS_SUPPORT is not set
# CONFIG_USB_MUSB_HDRC is not set
# CONFIG_USB_DWC3 is not set
# CONFIG_USB_DWC2 is not set
# CONFIG_USB_ISP1760 is not set

#
# USB port drivers
#
# CONFIG_USB_SERIAL is not set

#
# USB Miscellaneous drivers
#
# CONFIG_USB_EMI62 is not set
# CONFIG_USB_EMI26 is not set
# CONFIG_USB_ADUTUX is not set
# CONFIG_USB_SEVSEG is not set
# CONFIG_USB_LEGOTOWER is not set
# CONFIG_USB_LCD is not set
# CONFIG_USB_CYPRESS_CY7C63 is not set
# CONFIG_USB_CYTHERM is not set
# CONFIG_USB_IDMOUSE is not set
# CONFIG_USB_FTDI_ELAN is not set
# CONFIG_USB_APPLEDISPLAY is not set
# CONFIG_APPLE_MFI_FASTCHARGE is not set
# CONFIG_USB_LD is not set
# CONFIG_USB_TRANCEVIBRATOR is not set
# CONFIG_USB_IOWARRIOR is not set
# CONFIG_USB_TEST is not set
# CONFIG_USB_EHSET_TEST_FIXTURE is not set
# CONFIG_USB_ISIGHTFW is not set
# CONFIG_USB_YUREX is not set
# CONFIG_USB_EZUSB_FX2 is not set
# CONFIG_USB_HUB_USB251XB is not set
# CONFIG_USB_HSIC_USB3503 is not set
# CONFIG_USB_HSIC_USB4604 is not set
# CONFIG_USB_LINK_LAYER_TEST is not set
# CONFIG_USB_CHAOSKEY is not set

#
# USB Physical Layer drivers
#
# CONFIG_NOP_USB_XCEIV is not set
# CONFIG_USB_GPIO_VBUS is not set
# CONFIG_USB_ISP1301 is not set
# CONFIG_USB_ULPI is not set
# end of USB Physical Layer drivers

# CONFIG_USB_GADGET is not set
# CONFIG_TYPEC is not set
# CONFIG_USB_ROLE_SWITCH is not set
# CONFIG_MMC is not set
# CONFIG_SCSI_UFSHCD is not set
# CONFIG_MEMSTICK is not set
CONFIG_LEDS_GPIO_REGISTER=y
CONFIG_NEW_LEDS=y
CONFIG_LEDS_CLASS=y
# CONFIG_LEDS_CLASS_FLASH is not set
# CONFIG_LEDS_CLASS_MULTICOLOR is not set
# CONFIG_LEDS_BRIGHTNESS_HW_CHANGED is not set

#
# LED drivers
#
# CONFIG_LEDS_LM3530 is not set
# CONFIG_LEDS_LM3532 is not set
# CONFIG_LEDS_LM3642 is not set
# CONFIG_LEDS_PCA9532 is not set
# CONFIG_LEDS_GPIO is not set
# CONFIG_LEDS_LP3944 is not set
# CONFIG_LEDS_LP3952 is not set
# CONFIG_LEDS_PCA955X is not set
# CONFIG_LEDS_PCA963X is not set
# CONFIG_LEDS_REGULATOR is not set
# CONFIG_LEDS_BD2802 is not set
# CONFIG_LEDS_LT3593 is not set
# CONFIG_LEDS_TCA6507 is not set
# CONFIG_LEDS_TLC591XX is not set
# CONFIG_LEDS_LM355x is not set
# CONFIG_LEDS_IS31FL319X is not set

#
# LED driver for blink(1) USB RGB LED is under Special HID drivers (HID_THINGM)
#
# CONFIG_LEDS_BLINKM is not set
# CONFIG_LEDS_MLXREG is not set
# CONFIG_LEDS_USER is not set

#
# Flash and Torch LED drivers
#

#
# RGB LED drivers
#

#
# LED Triggers
#
CONFIG_LEDS_TRIGGERS=y
# CONFIG_LEDS_TRIGGER_TIMER is not set
# CONFIG_LEDS_TRIGGER_ONESHOT is not set
# CONFIG_LEDS_TRIGGER_MTD is not set
# CONFIG_LEDS_TRIGGER_HEARTBEAT is not set
# CONFIG_LEDS_TRIGGER_BACKLIGHT is not set
CONFIG_LEDS_TRIGGER_CPU=y
# CONFIG_LEDS_TRIGGER_ACTIVITY is not set
# CONFIG_LEDS_TRIGGER_GPIO is not set
# CONFIG_LEDS_TRIGGER_DEFAULT_ON is not set

#
# iptables trigger is under Netfilter config (LED target)
#
# CONFIG_LEDS_TRIGGER_TRANSIENT is not set
# CONFIG_LEDS_TRIGGER_CAMERA is not set
# CONFIG_LEDS_TRIGGER_PANIC is not set
# CONFIG_LEDS_TRIGGER_NETDEV is not set
# CONFIG_LEDS_TRIGGER_PATTERN is not set
# CONFIG_LEDS_TRIGGER_AUDIO is not set
# CONFIG_LEDS_TRIGGER_TTY is not set

#
# Simple LED drivers
#
# CONFIG_ACCESSIBILITY is not set
# CONFIG_INFINIBAND is not set
CONFIG_EDAC_ATOMIC_SCRUB=y
CONFIG_EDAC_SUPPORT=y
CONFIG_RTC_LIB=y
# CONFIG_RTC_CLASS is not set
# CONFIG_DMADEVICES is not set

#
# DMABUF options
#
# CONFIG_SYNC_FILE is not set
# CONFIG_DMABUF_HEAPS is not set
# end of DMABUF options

# CONFIG_AUXDISPLAY is not set
# CONFIG_UIO is not set
# CONFIG_VFIO is not set
# CONFIG_VIRT_DRIVERS is not set
CONFIG_VIRTIO_MENU=y
# CONFIG_VIRTIO_MMIO is not set
# CONFIG_VDPA is not set
CONFIG_VHOST_MENU=y
# CONFIG_VHOST_NET is not set
# CONFIG_VHOST_CROSS_ENDIAN_LEGACY is not set

#
# Microsoft Hyper-V guest support
#
# end of Microsoft Hyper-V guest support

# CONFIG_GREYBUS is not set
# CONFIG_COMEDI is not set
# CONFIG_STAGING is not set
# CONFIG_GOLDFISH is not set
# CONFIG_CHROME_PLATFORMS is not set
# CONFIG_MELLANOX_PLATFORM is not set
CONFIG_HAVE_CLK=y
CONFIG_HAVE_CLK_PREPARE=y
CONFIG_COMMON_CLK=y

#
# Clock driver for ARM Reference designs
#
# CONFIG_CLK_ICST is not set
# CONFIG_CLK_SP810 is not set
# end of Clock driver for ARM Reference designs

# CONFIG_COMMON_CLK_MAX9485 is not set
# CONFIG_COMMON_CLK_SI5341 is not set
# CONFIG_COMMON_CLK_SI5351 is not set
# CONFIG_COMMON_CLK_SI544 is not set
# CONFIG_COMMON_CLK_CDCE706 is not set
# CONFIG_COMMON_CLK_CS2000_CP is not set
# CONFIG_XILINX_VCU is not set
# CONFIG_HWSPINLOCK is not set

#
# Clock Source drivers
#
CONFIG_CLKSRC_MMIO=y
CONFIG_CLKSRC_PXA=y
# end of Clock Source drivers

# CONFIG_MAILBOX is not set
CONFIG_IOMMU_SUPPORT=y

#
# Generic IOMMU Pagetable Support
#
# CONFIG_IOMMU_IO_PGTABLE_LPAE is not set
# CONFIG_IOMMU_IO_PGTABLE_ARMV7S is not set
# end of Generic IOMMU Pagetable Support

# CONFIG_ARM_SMMU is not set

#
# Remoteproc drivers
#
# CONFIG_REMOTEPROC is not set
# end of Remoteproc drivers

#
# Rpmsg drivers
#
# CONFIG_RPMSG_VIRTIO is not set
# end of Rpmsg drivers

#
# SOC (System On Chip) specific Drivers
#

#
# Amlogic SoC drivers
#
# end of Amlogic SoC drivers

#
# Broadcom SoC drivers
#
# CONFIG_SOC_BRCMSTB is not set
# end of Broadcom SoC drivers

#
# NXP/Freescale QorIQ SoC drivers
#
# CONFIG_FSL_RCPM is not set
# end of NXP/Freescale QorIQ SoC drivers

#
# fujitsu SoC drivers
#
# end of fujitsu SoC drivers

#
# i.MX SoC drivers
#
# end of i.MX SoC drivers

#
# Enable LiteX SoC Builder specific drivers
#
# end of Enable LiteX SoC Builder specific drivers

#
# Qualcomm SoC drivers
#
# end of Qualcomm SoC drivers

# CONFIG_SOC_TI is not set

#
# Xilinx SoC drivers
#
# end of Xilinx SoC drivers
# end of SOC (System On Chip) specific Drivers

# CONFIG_PM_DEVFREQ is not set
# CONFIG_EXTCON is not set
# CONFIG_MEMORY is not set
# CONFIG_IIO is not set
# CONFIG_PWM is not set

#
# IRQ chip support
#
# end of IRQ chip support

# CONFIG_IPACK_BUS is not set
# CONFIG_RESET_CONTROLLER is not set

#
# PHY Subsystem
#
# CONFIG_GENERIC_PHY is not set
# CONFIG_PHY_CAN_TRANSCEIVER is not set

#
# PHY drivers for Broadcom platforms
#
# CONFIG_BCM_KONA_USB2_PHY is not set
# end of PHY drivers for Broadcom platforms

# CONFIG_PHY_PXA_28NM_HSIC is not set
# CONFIG_PHY_PXA_28NM_USB2 is not set
# end of PHY Subsystem

# CONFIG_POWERCAP is not set
# CONFIG_MCB is not set
# CONFIG_RAS is not set

#
# Android
#
# CONFIG_ANDROID_BINDER_IPC is not set
# end of Android

# CONFIG_DAX is not set
CONFIG_NVMEM=y
CONFIG_NVMEM_SYSFS=y
# CONFIG_NVMEM_RMEM is not set

#
# HW tracing support
#
# CONFIG_STM is not set
# CONFIG_INTEL_TH is not set
# end of HW tracing support

# CONFIG_FPGA is not set
# CONFIG_SIOX is not set
# CONFIG_SLIMBUS is not set
# CONFIG_INTERCONNECT is not set
# CONFIG_COUNTER is not set
# CONFIG_PECI is not set
# CONFIG_HTE is not set
# end of Device Drivers

#
# File systems
#
# CONFIG_VALIDATE_FS_PARSER is not set
CONFIG_FS_IOMAP=y
CONFIG_EXT2_FS=y
# CONFIG_EXT2_FS_XATTR is not set
# CONFIG_EXT3_FS is not set
# CONFIG_EXT4_FS is not set
# CONFIG_REISERFS_FS is not set
# CONFIG_JFS_FS is not set
# CONFIG_XFS_FS is not set
# CONFIG_GFS2_FS is not set
# CONFIG_BTRFS_FS is not set
# CONFIG_NILFS2_FS is not set
# CONFIG_F2FS_FS is not set
CONFIG_EXPORTFS=y
# CONFIG_EXPORTFS_BLOCK_OPS is not set
CONFIG_FILE_LOCKING=y
# CONFIG_FS_ENCRYPTION is not set
# CONFIG_FS_VERITY is not set
CONFIG_FSNOTIFY=y
CONFIG_DNOTIFY=y
CONFIG_INOTIFY_USER=y
# CONFIG_FANOTIFY is not set
# CONFIG_QUOTA is not set
# CONFIG_AUTOFS4_FS is not set
# CONFIG_AUTOFS_FS is not set
# CONFIG_FUSE_FS is not set
# CONFIG_OVERLAY_FS is not set

#
# Caches
#
# CONFIG_FSCACHE is not set
# end of Caches

#
# CD-ROM/DVD Filesystems
#
# CONFIG_ISO9660_FS is not set
# CONFIG_UDF_FS is not set
# end of CD-ROM/DVD Filesystems

#
# DOS/FAT/EXFAT/NT Filesystems
#
CONFIG_FAT_FS=m
CONFIG_MSDOS_FS=m
CONFIG_VFAT_FS=m
CONFIG_FAT_DEFAULT_CODEPAGE=437
CONFIG_FAT_DEFAULT_IOCHARSET="iso8859-1"
# CONFIG_FAT_DEFAULT_UTF8 is not set
# CONFIG_EXFAT_FS is not set
# CONFIG_NTFS_FS is not set
# CONFIG_NTFS3_FS is not set
# end of DOS/FAT/EXFAT/NT Filesystems

#
# Pseudo filesystems
#
CONFIG_PROC_FS=y
CONFIG_PROC_SYSCTL=y
CONFIG_PROC_PAGE_MONITOR=y
# CONFIG_PROC_CHILDREN is not set
CONFIG_KERNFS=y
CONFIG_SYSFS=y
# CONFIG_TMPFS is not set
# CONFIG_CONFIGFS_FS is not set
# end of Pseudo filesystems

CONFIG_MISC_FILESYSTEMS=y
# CONFIG_ORANGEFS_FS is not set
# CONFIG_ADFS_FS is not set
# CONFIG_AFFS_FS is not set
# CONFIG_HFS_FS is not set
# CONFIG_HFSPLUS_FS is not set
# CONFIG_BEFS_FS is not set
# CONFIG_BFS_FS is not set
# CONFIG_EFS_FS is not set
CONFIG_JFFS2_FS=y
CONFIG_JFFS2_FS_DEBUG=0
CONFIG_JFFS2_FS_WRITEBUFFER=y
# CONFIG_JFFS2_FS_WBUF_VERIFY is not set
# CONFIG_JFFS2_SUMMARY is not set
# CONFIG_JFFS2_FS_XATTR is not set
# CONFIG_JFFS2_COMPRESSION_OPTIONS is not set
CONFIG_JFFS2_ZLIB=y
CONFIG_JFFS2_RTIME=y
# CONFIG_CRAMFS is not set
# CONFIG_SQUASHFS is not set
# CONFIG_VXFS_FS is not set
# CONFIG_MINIX_FS is not set
# CONFIG_OMFS_FS is not set
# CONFIG_HPFS_FS is not set
# CONFIG_QNX4FS_FS is not set
# CONFIG_QNX6FS_FS is not set
# CONFIG_ROMFS_FS is not set
# CONFIG_PSTORE is not set
# CONFIG_SYSV_FS is not set
# CONFIG_UFS_FS is not set
# CONFIG_EROFS_FS is not set
CONFIG_NETWORK_FILESYSTEMS=y
CONFIG_NFS_FS=y
CONFIG_NFS_V2=y
CONFIG_NFS_V3=y
# CONFIG_NFS_V3_ACL is not set
# CONFIG_NFS_V4 is not set
# CONFIG_NFS_SWAP is not set
CONFIG_NFS_DISABLE_UDP_SUPPORT=y
# CONFIG_NFSD is not set
CONFIG_GRACE_PERIOD=y
CONFIG_LOCKD=y
CONFIG_LOCKD_V4=y
CONFIG_NFS_COMMON=y
CONFIG_SUNRPC=y
# CONFIG_SUNRPC_DEBUG is not set
# CONFIG_CEPH_FS is not set
# CONFIG_CIFS is not set
# CONFIG_SMB_SERVER is not set
# CONFIG_CODA_FS is not set
# CONFIG_AFS_FS is not set
CONFIG_NLS=y
CONFIG_NLS_DEFAULT="iso8859-1"
CONFIG_NLS_CODEPAGE_437=m
# CONFIG_NLS_CODEPAGE_737 is not set
# CONFIG_NLS_CODEPAGE_775 is not set
# CONFIG_NLS_CODEPAGE_850 is not set
# CONFIG_NLS_CODEPAGE_852 is not set
# CONFIG_NLS_CODEPAGE_855 is not set
# CONFIG_NLS_CODEPAGE_857 is not set
# CONFIG_NLS_CODEPAGE_860 is not set
# CONFIG_NLS_CODEPAGE_861 is not set
# CONFIG_NLS_CODEPAGE_862 is not set
# CONFIG_NLS_CODEPAGE_863 is not set
# CONFIG_NLS_CODEPAGE_864 is not set
# CONFIG_NLS_CODEPAGE_865 is not set
# CONFIG_NLS_CODEPAGE_866 is not set
# CONFIG_NLS_CODEPAGE_869 is not set
# CONFIG_NLS_CODEPAGE_936 is not set
# CONFIG_NLS_CODEPAGE_950 is not set
# CONFIG_NLS_CODEPAGE_932 is not set
# CONFIG_NLS_CODEPAGE_949 is not set
# CONFIG_NLS_CODEPAGE_874 is not set
# CONFIG_NLS_ISO8859_8 is not set
# CONFIG_NLS_CODEPAGE_1250 is not set
# CONFIG_NLS_CODEPAGE_1251 is not set
# CONFIG_NLS_ASCII is not set
CONFIG_NLS_ISO8859_1=m
# CONFIG_NLS_ISO8859_2 is not set
# CONFIG_NLS_ISO8859_3 is not set
# CONFIG_NLS_ISO8859_4 is not set
# CONFIG_NLS_ISO8859_5 is not set
# CONFIG_NLS_ISO8859_6 is not set
# CONFIG_NLS_ISO8859_7 is not set
# CONFIG_NLS_ISO8859_9 is not set
# CONFIG_NLS_ISO8859_13 is not set
# CONFIG_NLS_ISO8859_14 is not set
# CONFIG_NLS_ISO8859_15 is not set
# CONFIG_NLS_KOI8_R is not set
# CONFIG_NLS_KOI8_U is not set
# CONFIG_NLS_MAC_ROMAN is not set
# CONFIG_NLS_MAC_CELTIC is not set
# CONFIG_NLS_MAC_CENTEURO is not set
# CONFIG_NLS_MAC_CROATIAN is not set
# CONFIG_NLS_MAC_CYRILLIC is not set
# CONFIG_NLS_MAC_GAELIC is not set
# CONFIG_NLS_MAC_GREEK is not set
# CONFIG_NLS_MAC_ICELAND is not set
# CONFIG_NLS_MAC_INUIT is not set
# CONFIG_NLS_MAC_ROMANIAN is not set
# CONFIG_NLS_MAC_TURKISH is not set
# CONFIG_NLS_UTF8 is not set
# CONFIG_UNICODE is not set
CONFIG_IO_WQ=y
# end of File systems

#
# Security options
#
# CONFIG_KEYS is not set
# CONFIG_SECURITY_DMESG_RESTRICT is not set
# CONFIG_SECURITY is not set
# CONFIG_SECURITYFS is not set
CONFIG_HAVE_HARDENED_USERCOPY_ALLOCATOR=y
# CONFIG_HARDENED_USERCOPY is not set
# CONFIG_FORTIFY_SOURCE is not set
# CONFIG_STATIC_USERMODEHELPER is not set
CONFIG_DEFAULT_SECURITY_DAC=y
CONFIG_LSM="landlock,lockdown,yama,loadpin,safesetid,integrity,bpf"

#
# Kernel hardening options
#

#
# Memory initialization
#
CONFIG_CC_HAS_AUTO_VAR_INIT_PATTERN=y
CONFIG_CC_HAS_AUTO_VAR_INIT_ZERO_BARE=y
CONFIG_CC_HAS_AUTO_VAR_INIT_ZERO=y
# CONFIG_INIT_STACK_NONE is not set
# CONFIG_INIT_STACK_ALL_PATTERN is not set
CONFIG_INIT_STACK_ALL_ZERO=y
# CONFIG_INIT_ON_ALLOC_DEFAULT_ON is not set
# CONFIG_INIT_ON_FREE_DEFAULT_ON is not set
# end of Memory initialization

CONFIG_CC_HAS_RANDSTRUCT=y
CONFIG_RANDSTRUCT_NONE=y
# CONFIG_RANDSTRUCT_FULL is not set
# end of Kernel hardening options
# end of Security options

# CONFIG_CRYPTO is not set

#
# Library routines
#
CONFIG_LINEAR_RANGES=y
# CONFIG_PACKING is not set
CONFIG_BITREVERSE=y
CONFIG_GENERIC_STRNCPY_FROM_USER=y
CONFIG_GENERIC_STRNLEN_USER=y
CONFIG_GENERIC_NET_UTILS=y
# CONFIG_CORDIC is not set
# CONFIG_PRIME_NUMBERS is not set
CONFIG_RATIONAL=y
CONFIG_GENERIC_PCI_IOMAP=y
CONFIG_ARCH_USE_CMPXCHG_LOCKREF=y

#
# Crypto library routines
#
CONFIG_CRYPTO_LIB_BLAKE2S_GENERIC=y
# CONFIG_CRYPTO_LIB_CHACHA is not set
# CONFIG_CRYPTO_LIB_CURVE25519 is not set
CONFIG_CRYPTO_LIB_POLY1305_RSIZE=9
# CONFIG_CRYPTO_LIB_POLY1305 is not set
CONFIG_CRYPTO_LIB_SHA1=y
# end of Crypto library routines

# CONFIG_CRC_CCITT is not set
# CONFIG_CRC16 is not set
# CONFIG_CRC_T10DIF is not set
# CONFIG_CRC64_ROCKSOFT is not set
# CONFIG_CRC_ITU_T is not set
CONFIG_CRC32=y
# CONFIG_CRC32_SELFTEST is not set
CONFIG_CRC32_SLICEBY8=y
# CONFIG_CRC32_SLICEBY4 is not set
# CONFIG_CRC32_SARWATE is not set
# CONFIG_CRC32_BIT is not set
# CONFIG_CRC64 is not set
# CONFIG_CRC4 is not set
# CONFIG_CRC7 is not set
# CONFIG_LIBCRC32C is not set
# CONFIG_CRC8 is not set
CONFIG_XXHASH=y
# CONFIG_RANDOM32_SELFTEST is not set
CONFIG_ZLIB_INFLATE=y
CONFIG_ZLIB_DEFLATE=y
CONFIG_LZO_DECOMPRESS=y
CONFIG_LZ4_DECOMPRESS=y
CONFIG_ZSTD_COMMON=y
CONFIG_ZSTD_DECOMPRESS=y
CONFIG_XZ_DEC=y
CONFIG_XZ_DEC_X86=y
CONFIG_XZ_DEC_POWERPC=y
CONFIG_XZ_DEC_IA64=y
CONFIG_XZ_DEC_ARM=y
CONFIG_XZ_DEC_ARMTHUMB=y
CONFIG_XZ_DEC_SPARC=y
# CONFIG_XZ_DEC_MICROLZMA is not set
CONFIG_XZ_DEC_BCJ=y
# CONFIG_XZ_DEC_TEST is not set
CONFIG_DECOMPRESS_GZIP=y
CONFIG_DECOMPRESS_BZIP2=y
CONFIG_DECOMPRESS_LZMA=y
CONFIG_DECOMPRESS_XZ=y
CONFIG_DECOMPRESS_LZO=y
CONFIG_DECOMPRESS_LZ4=y
CONFIG_DECOMPRESS_ZSTD=y
CONFIG_GENERIC_ALLOCATOR=y
CONFIG_HAS_IOMEM=y
CONFIG_HAS_IOPORT_MAP=y
CONFIG_HAS_DMA=y
CONFIG_DMA_OPS=y
CONFIG_NEED_DMA_MAP_STATE=y
CONFIG_ARCH_HAS_DMA_WRITE_COMBINE=y
CONFIG_DMA_DECLARE_COHERENT=y
CONFIG_ARCH_HAS_SETUP_DMA_OPS=y
CONFIG_ARCH_HAS_TEARDOWN_DMA_OPS=y
CONFIG_ARCH_HAS_SYNC_DMA_FOR_DEVICE=y
CONFIG_ARCH_HAS_SYNC_DMA_FOR_CPU=y
CONFIG_DMA_NONCOHERENT_MMAP=y
# CONFIG_DMA_API_DEBUG is not set
CONFIG_DQL=y
CONFIG_NLATTR=y
CONFIG_GENERIC_ATOMIC64=y
# CONFIG_IRQ_POLL is not set
CONFIG_FONT_SUPPORT=y
# CONFIG_FONTS is not set
CONFIG_FONT_8x8=y
CONFIG_FONT_8x16=y
CONFIG_SG_POOL=y
CONFIG_ARCH_NO_SG_CHAIN=y
CONFIG_STACKDEPOT=y
CONFIG_SBITMAP=y
# end of Library routines

CONFIG_GENERIC_LIB_DEVMEM_IS_ALLOWED=y

#
# Kernel hacking
#

#
# printk and dmesg options
#
# CONFIG_PRINTK_TIME is not set
# CONFIG_PRINTK_CALLER is not set
# CONFIG_STACKTRACE_BUILD_ID is not set
CONFIG_CONSOLE_LOGLEVEL_DEFAULT=7
CONFIG_CONSOLE_LOGLEVEL_QUIET=4
CONFIG_MESSAGE_LOGLEVEL_DEFAULT=4
# CONFIG_BOOT_PRINTK_DELAY is not set
# CONFIG_DYNAMIC_DEBUG is not set
# CONFIG_DYNAMIC_DEBUG_CORE is not set
CONFIG_SYMBOLIC_ERRNAME=y
CONFIG_DEBUG_BUGVERBOSE=y
# end of printk and dmesg options

CONFIG_DEBUG_KERNEL=y
CONFIG_DEBUG_MISC=y

#
# Compile-time checks and compiler options
#
CONFIG_AS_HAS_NON_CONST_LEB128=y
CONFIG_DEBUG_INFO_NONE=y
# CONFIG_DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT is not set
# CONFIG_DEBUG_INFO_DWARF4 is not set
# CONFIG_DEBUG_INFO_DWARF5 is not set
CONFIG_FRAME_WARN=1024
# CONFIG_STRIP_ASM_SYMS is not set
# CONFIG_HEADERS_INSTALL is not set
CONFIG_SECTION_MISMATCH_WARN_ONLY=y
# CONFIG_DEBUG_FORCE_WEAK_PER_CPU is not set
# end of Compile-time checks and compiler options

#
# Generic Kernel Debugging Instruments
#
CONFIG_MAGIC_SYSRQ=y
CONFIG_MAGIC_SYSRQ_DEFAULT_ENABLE=0x1
CONFIG_MAGIC_SYSRQ_SERIAL=y
CONFIG_MAGIC_SYSRQ_SERIAL_SEQUENCE=""
# CONFIG_DEBUG_FS is not set
CONFIG_HAVE_ARCH_KGDB=y
# CONFIG_KGDB is not set
# CONFIG_UBSAN is not set
# end of Generic Kernel Debugging Instruments

#
# Networking Debugging
#
# CONFIG_NET_DEV_REFCNT_TRACKER is not set
# CONFIG_NET_NS_REFCNT_TRACKER is not set
# CONFIG_DEBUG_NET is not set
# end of Networking Debugging

#
# Memory Debugging
#
# CONFIG_PAGE_EXTENSION is not set
# CONFIG_DEBUG_PAGEALLOC is not set
CONFIG_SLUB_DEBUG=y
# CONFIG_SLUB_DEBUG_ON is not set
# CONFIG_PAGE_OWNER is not set
# CONFIG_PAGE_POISONING is not set
# CONFIG_DEBUG_WX is not set
# CONFIG_DEBUG_OBJECTS is not set
CONFIG_HAVE_DEBUG_KMEMLEAK=y
# CONFIG_DEBUG_KMEMLEAK is not set
# CONFIG_DEBUG_STACK_USAGE is not set
# CONFIG_SCHED_STACK_END_CHECK is not set
# CONFIG_DEBUG_VM is not set
CONFIG_ARCH_HAS_DEBUG_VIRTUAL=y
# CONFIG_DEBUG_VIRTUAL is not set
CONFIG_DEBUG_MEMORY_INIT=y
CONFIG_HAVE_ARCH_KASAN=y
CONFIG_HAVE_ARCH_KASAN_VMALLOC=y
CONFIG_CC_HAS_KASAN_GENERIC=y
CONFIG_CC_HAS_WORKING_NOSANITIZE_ADDRESS=y
# CONFIG_KASAN is not set
CONFIG_HAVE_ARCH_KFENCE=y
# CONFIG_KFENCE is not set
# end of Memory Debugging

# CONFIG_DEBUG_SHIRQ is not set

#
# Debug Oops, Lockups and Hangs
#
# CONFIG_PANIC_ON_OOPS is not set
CONFIG_PANIC_ON_OOPS_VALUE=0
CONFIG_PANIC_TIMEOUT=0
# CONFIG_SOFTLOCKUP_DETECTOR is not set
# CONFIG_DETECT_HUNG_TASK is not set
# CONFIG_WQ_WATCHDOG is not set
# CONFIG_TEST_LOCKUP is not set
# end of Debug Oops, Lockups and Hangs

#
# Scheduler Debugging
#
CONFIG_SCHED_DEBUG=y
# CONFIG_SCHEDSTATS is not set
# end of Scheduler Debugging

# CONFIG_DEBUG_TIMEKEEPING is not set

#
# Lock Debugging (spinlocks, mutexes, etc...)
#
CONFIG_LOCK_DEBUGGING_SUPPORT=y
# CONFIG_PROVE_LOCKING is not set
# CONFIG_LOCK_STAT is not set
# CONFIG_DEBUG_RT_MUTEXES is not set
# CONFIG_DEBUG_SPINLOCK is not set
# CONFIG_DEBUG_MUTEXES is not set
# CONFIG_DEBUG_WW_MUTEX_SLOWPATH is not set
# CONFIG_DEBUG_RWSEMS is not set
# CONFIG_DEBUG_LOCK_ALLOC is not set
# CONFIG_DEBUG_ATOMIC_SLEEP is not set
# CONFIG_DEBUG_LOCKING_API_SELFTESTS is not set
# CONFIG_LOCK_TORTURE_TEST is not set
# CONFIG_WW_MUTEX_SELFTEST is not set
# CONFIG_SCF_TORTURE_TEST is not set
# end of Lock Debugging (spinlocks, mutexes, etc...)

# CONFIG_DEBUG_IRQFLAGS is not set
CONFIG_STACKTRACE=y
# CONFIG_WARN_ALL_UNSEEDED_RANDOM is not set
# CONFIG_DEBUG_KOBJECT is not set

#
# Debug kernel data structures
#
# CONFIG_DEBUG_LIST is not set
# CONFIG_DEBUG_PLIST is not set
# CONFIG_DEBUG_SG is not set
# CONFIG_DEBUG_NOTIFIERS is not set
# CONFIG_BUG_ON_DATA_CORRUPTION is not set
# CONFIG_DEBUG_MAPLE_TREE is not set
# end of Debug kernel data structures

# CONFIG_DEBUG_CREDENTIALS is not set

#
# RCU Debugging
#
# CONFIG_RCU_SCALE_TEST is not set
# CONFIG_RCU_TORTURE_TEST is not set
# CONFIG_RCU_REF_SCALE_TEST is not set
# CONFIG_RCU_TRACE is not set
# CONFIG_RCU_EQS_DEBUG is not set
# end of RCU Debugging

# CONFIG_DEBUG_WQ_FORCE_RR_CPU is not set
# CONFIG_LATENCYTOP is not set
CONFIG_HAVE_FUNCTION_TRACER=y
CONFIG_HAVE_FUNCTION_GRAPH_TRACER=y
CONFIG_HAVE_DYNAMIC_FTRACE=y
CONFIG_HAVE_DYNAMIC_FTRACE_WITH_REGS=y
CONFIG_HAVE_FTRACE_MCOUNT_RECORD=y
CONFIG_HAVE_SYSCALL_TRACEPOINTS=y
CONFIG_HAVE_C_RECORDMCOUNT=y
CONFIG_HAVE_BUILDTIME_MCOUNT_SORT=y
CONFIG_TRACING_SUPPORT=y
CONFIG_FTRACE=y
# CONFIG_FUNCTION_TRACER is not set
# CONFIG_STACK_TRACER is not set
# CONFIG_IRQSOFF_TRACER is not set
# CONFIG_SCHED_TRACER is not set
# CONFIG_HWLAT_TRACER is not set
# CONFIG_OSNOISE_TRACER is not set
# CONFIG_TIMERLAT_TRACER is not set
# CONFIG_ENABLE_DEFAULT_TRACERS is not set
# CONFIG_FTRACE_SYSCALLS is not set
# CONFIG_TRACER_SNAPSHOT is not set
CONFIG_BRANCH_PROFILE_NONE=y
# CONFIG_PROFILE_ANNOTATED_BRANCHES is not set
# CONFIG_PROFILE_ALL_BRANCHES is not set
# CONFIG_BLK_DEV_IO_TRACE is not set
# CONFIG_SYNTH_EVENTS is not set
# CONFIG_TRACEPOINT_BENCHMARK is not set
# CONFIG_PREEMPTIRQ_DELAY_TEST is not set
# CONFIG_SAMPLES is not set
# CONFIG_STRICT_DEVMEM is not set

#
# arm Debugging
#
# CONFIG_ARM_PTDUMP_DEBUGFS is not set
# CONFIG_UNWINDER_FRAME_POINTER is not set
CONFIG_UNWINDER_ARM=y
CONFIG_ARM_UNWIND=y
CONFIG_DEBUG_USER=y
CONFIG_DEBUG_LL=y
CONFIG_DEBUG_SA1100=y
# CONFIG_DEBUG_ICEDCC is not set
# CONFIG_DEBUG_SEMIHOSTING is not set
# CONFIG_DEBUG_LL_UART_8250 is not set
# CONFIG_DEBUG_LL_UART_PL01X is not set
# CONFIG_DEBUG_UART_FLOW_CONTROL is not set
CONFIG_DEBUG_LL_INCLUDE="debug/sa1100.S"
CONFIG_UNCOMPRESS_INCLUDE="mach/uncompress.h"
# CONFIG_EARLY_PRINTK is not set
# end of arm Debugging

#
# Kernel Testing and Coverage
#
# CONFIG_KUNIT is not set
# CONFIG_NOTIFIER_ERROR_INJECTION is not set
# CONFIG_FAULT_INJECTION is not set
CONFIG_ARCH_HAS_KCOV=y
CONFIG_CC_HAS_SANCOV_TRACE_PC=y
# CONFIG_KCOV is not set
CONFIG_RUNTIME_TESTING_MENU=y
# CONFIG_TEST_MIN_HEAP is not set
# CONFIG_TEST_DIV64 is not set
# CONFIG_BACKTRACE_SELF_TEST is not set
# CONFIG_TEST_REF_TRACKER is not set
# CONFIG_RBTREE_TEST is not set
# CONFIG_REED_SOLOMON_TEST is not set
# CONFIG_INTERVAL_TREE_TEST is not set
# CONFIG_PERCPU_TEST is not set
# CONFIG_ATOMIC64_SELFTEST is not set
# CONFIG_TEST_HEXDUMP is not set
# CONFIG_STRING_SELFTEST is not set
# CONFIG_TEST_STRING_HELPERS is not set
# CONFIG_TEST_STRSCPY is not set
# CONFIG_TEST_KSTRTOX is not set
# CONFIG_TEST_PRINTF is not set
# CONFIG_TEST_SCANF is not set
# CONFIG_TEST_BITMAP is not set
# CONFIG_TEST_UUID is not set
# CONFIG_TEST_XARRAY is not set
# CONFIG_TEST_RHASHTABLE is not set
# CONFIG_TEST_SIPHASH is not set
# CONFIG_TEST_IDA is not set
# CONFIG_TEST_LKM is not set
# CONFIG_TEST_BITOPS is not set
# CONFIG_TEST_VMALLOC is not set
# CONFIG_TEST_USER_COPY is not set
# CONFIG_TEST_BPF is not set
# CONFIG_TEST_BLACKHOLE_DEV is not set
# CONFIG_FIND_BIT_BENCHMARK is not set
# CONFIG_TEST_FIRMWARE is not set
# CONFIG_TEST_SYSCTL is not set
# CONFIG_TEST_UDELAY is not set
# CONFIG_TEST_STATIC_KEYS is not set
# CONFIG_TEST_KMOD is not set
# CONFIG_TEST_MEMCAT_P is not set
# CONFIG_TEST_MEMINIT is not set
# CONFIG_TEST_FREE_PAGES is not set
CONFIG_ARCH_USE_MEMTEST=y
# CONFIG_MEMTEST is not set
# end of Kernel Testing and Coverage

#
# Rust hacking
#
# end of Rust hacking
# end of Kernel hacking

Re: [PATCH bpf-next v2 4/8] bpf: Add kfunc bpf_rcu_read_lock/unlock()

[Alexei Starovoitov]

On 11/7/22 11:41 PM, Yonghong Song wrote:
> Add two kfunc's bpf_rcu_read_lock() and bpf_rcu_read_unlock(). These two kfunc's
> can be used for all program types. A new kfunc hook type BTF_KFUNC_HOOK_GENERIC
> is added which corresponds to prog type BPF_PROG_TYPE_UNSPEC, indicating the
> kfunc intends to be used for all prog types.
> 
> The kfunc bpf_rcu_read_lock() is tagged with new flag KF_RCU_LOCK and
> bpf_rcu_read_unlock() with new flag KF_RCU_UNLOCK. These two new flags
> are used by the verifier to identify these two helpers.
> 
> Signed-off-by: Yonghong Song <yhs@fb.com>
> ---
>   include/linux/bpf.h  |  3 +++
>   include/linux/btf.h  |  2 ++
>   kernel/bpf/btf.c     |  8 ++++++++
>   kernel/bpf/helpers.c | 25 ++++++++++++++++++++++++-
>   4 files changed, 37 insertions(+), 1 deletion(-)
> 
> For new kfuncs, I added KF_RCU_LOCK and KF_RCU_UNLOCK flags to
> indicate a helper could be bpf_rcu_read_lock/unlock(). This could
> be a waste for kfunc flag space as the flag is used to identify
> one helper. Alternatively, we might identify kfunc based on
> btf_id. Any suggestions are welcome.
> 
> diff --git a/include/linux/bpf.h b/include/linux/bpf.h
> index 5011cb50abf1..b4bbcafd1c9b 100644
> --- a/include/linux/bpf.h
> +++ b/include/linux/bpf.h
> @@ -2118,6 +2118,9 @@ bool bpf_prog_has_kfunc_call(const struct bpf_prog *prog);
>   const struct btf_func_model *
>   bpf_jit_find_kfunc_model(const struct bpf_prog *prog,
>   			 const struct bpf_insn *insn);
> +void bpf_rcu_read_lock(void);
> +void bpf_rcu_read_unlock(void);
> +
>   struct bpf_core_ctx {
>   	struct bpf_verifier_log *log;
>   	const struct btf *btf;
> diff --git a/include/linux/btf.h b/include/linux/btf.h
> index d80345fa566b..8783ca7e6079 100644
> --- a/include/linux/btf.h
> +++ b/include/linux/btf.h
> @@ -51,6 +51,8 @@
>   #define KF_TRUSTED_ARGS (1 << 4) /* kfunc only takes trusted pointer arguments */
>   #define KF_SLEEPABLE    (1 << 5) /* kfunc may sleep */
>   #define KF_DESTRUCTIVE  (1 << 6) /* kfunc performs destructive actions */
> +#define KF_RCU_LOCK     (1 << 7) /* kfunc does rcu_read_lock() */
> +#define KF_RCU_UNLOCK   (1 << 8) /* kfunc does rcu_read_unlock() */

Please don't use KF flags for these. It's not going to scale.
Compare btf_id instead.

Re: [PATCH bpf-next v2 5/8] bpf: Add bpf_rcu_read_lock() verifier support

[Kumar Kartikeya Dwivedi]

On Tue, Nov 08, 2022 at 01:11:14PM IST, Yonghong Song wrote:
> To simplify the design and support the common practice, no
> nested bpf_rcu_read_lock() is allowed. During verification,
> each paired bpf_rcu_read_lock()/unlock() has a unique
> region id, starting from 1. Each rcu ptr register also
> remembers the region id when the ptr reg is initialized.
> The following is a simple example to illustrate the
> rcu lock regions and usage of rcu ptr's.
>
>      ...                    <=== rcu lock region 0
>      bpf_rcu_read_lock()    <=== rcu lock region 1
>      rcu_ptr1 = ...         <=== rcu_ptr1 with region 1
>      ... using rcu_ptr1 ...
>      bpf_rcu_read_unlock()
>      ...                    <=== rcu lock region -1
>      bpf_rcu_read_lock()    <=== rcu lock region 2
>      rcu_ptr2 = ...         <=== rcu_ptr2 with region 2
>      ... using rcu_ptr2 ...
>      ... using rcu_ptr1 ... <=== wrong, region 1 rcu_ptr in region 2
>      bpf_rcu_read_unlock()
>
> Outside the rcu lock region, the rcu lock region id is 0 or negative of
> previous valid rcu lock region id, so the next valid rcu lock region
> id can be easily computed.
>
> Note that rcu protection is not needed for non-sleepable program. But
> it is supported to make cross-sleepable/nonsleepable development easier.
> For non-sleepable program, the following insns can be inside the rcu
> lock region:
>   - any non call insns except BPF_ABS/BPF_IND
>   - non sleepable helpers or kfuncs
> Also, bpf_*_storage_get() helper's 5th hidden argument (for memory
> allocation flag) should be GFP_ATOMIC.
>
> If a pointer (PTR_TO_BTF_ID) is marked as rcu, then any use of
> this pointer and the load which gets this pointer needs to be
> protected by bpf_rcu_read_lock(). The following shows a couple
> of examples:
>   struct task_struct {
>         ...
>         struct task_struct __rcu        *real_parent;
>         struct css_set __rcu            *cgroups;
>         ...
>   };
>   struct css_set {
>         ...
>         struct cgroup *dfl_cgrp;
>         ...
>   }
>   ...
>   task = bpf_get_current_task_btf();
>   cgroups = task->cgroups;
>   dfl_cgroup = cgroups->dfl_cgrp;
>   ... using dfl_cgroup ...
>
> The bpf_rcu_read_lock/unlock() should be added like below to
> avoid verification failures.
>   task = bpf_get_current_task_btf();
>   bpf_rcu_read_lock();
>   cgroups = task->cgroups;
>   dfl_cgroup = cgroups->dfl_cgrp;
>   bpf_rcu_read_unlock();
>   ... using dfl_cgroup ...
>
> The following is another example for task->real_parent.
>   task = bpf_get_current_task_btf();
>   bpf_rcu_read_lock();
>   real_parent = task->real_parent;
>   ... bpf_task_storage_get(&map, real_parent, 0, 0);
>   bpf_rcu_read_unlock();
>
> Signed-off-by: Yonghong Song <yhs@fb.com>
> ---
>  include/linux/bpf.h          |  1 +
>  include/linux/bpf_verifier.h |  7 +++
>  kernel/bpf/btf.c             | 32 ++++++++++++-
>  kernel/bpf/verifier.c        | 92 +++++++++++++++++++++++++++++++-----
>  4 files changed, 120 insertions(+), 12 deletions(-)
>
> diff --git a/include/linux/bpf.h b/include/linux/bpf.h
> index b4bbcafd1c9b..98af0c9ec721 100644
> --- a/include/linux/bpf.h
> +++ b/include/linux/bpf.h
> @@ -761,6 +761,7 @@ struct bpf_prog_ops {
>  struct btf_struct_access_info {
>  	u32 next_btf_id;
>  	enum bpf_type_flag flag;
> +	bool is_rcu;
>  };
>
>  struct bpf_verifier_ops {
> diff --git a/include/linux/bpf_verifier.h b/include/linux/bpf_verifier.h
> index 1a32baa78ce2..5d703637bb12 100644
> --- a/include/linux/bpf_verifier.h
> +++ b/include/linux/bpf_verifier.h
> @@ -179,6 +179,10 @@ struct bpf_reg_state {
>  	 */
>  	s32 subreg_def;
>  	enum bpf_reg_liveness live;
> +	/* 0: not rcu ptr; > 0: rcu ptr, id of the rcu read lock region where
> +	 * the rcu ptr reg is initialized.
> +	 */
> +	int active_rcu_lock;
>  	/* if (!precise && SCALAR_VALUE) min/max/tnum don't affect safety */
>  	bool precise;
>  };
> @@ -324,6 +328,8 @@ struct bpf_verifier_state {
>  	u32 insn_idx;
>  	u32 curframe;
>  	u32 active_spin_lock;
> +	/* <= 0: not in rcu read lock region; > 0: the rcu lock region id */
> +	int active_rcu_lock;
>  	bool speculative;
>
>  	/* first and last insn idx of this verifier state */
> @@ -424,6 +430,7 @@ struct bpf_insn_aux_data {
>  	u32 seen; /* this insn was processed by the verifier at env->pass_cnt */
>  	bool sanitize_stack_spill; /* subject to Spectre v4 sanitation */
>  	bool zext_dst; /* this insn zero extends dst reg */
> +	bool storage_get_func_atomic; /* bpf_*_storage_get() with atomic memory alloc */
>  	u8 alu_state; /* used in combination with alu_limit */
>
>  	/* below fields are initialized once */
> diff --git a/kernel/bpf/btf.c b/kernel/bpf/btf.c
> index d2ee1669a2f3..c5a9569f2ae0 100644
> --- a/kernel/bpf/btf.c
> +++ b/kernel/bpf/btf.c
> @@ -5831,6 +5831,7 @@ static int btf_struct_walk(struct bpf_verifier_log *log, const struct btf *btf,
>  		if (btf_type_is_ptr(mtype)) {
>  			const struct btf_type *stype, *t;
>  			enum bpf_type_flag tmp_flag = 0;
> +			bool is_rcu = false;
>  			u32 id;
>
>  			if (msize != size || off != moff) {
> @@ -5850,12 +5851,16 @@ static int btf_struct_walk(struct bpf_verifier_log *log, const struct btf *btf,
>  				/* check __percpu tag */
>  				if (strcmp(tag_value, "percpu") == 0)
>  					tmp_flag = MEM_PERCPU;
> +				/* check __rcu tag */
> +				if (strcmp(tag_value, "rcu") == 0)
> +					is_rcu = true;
>  			}
>
>  			stype = btf_type_skip_modifiers(btf, mtype->type, &id);
>  			if (btf_type_is_struct(stype)) {
>  				info->next_btf_id = id;
>  				info->flag = tmp_flag;
> +				info->is_rcu = is_rcu;
>  				return WALK_PTR;
>  			}
>  		}
> @@ -6317,7 +6322,7 @@ static int btf_check_func_arg_match(struct bpf_verifier_env *env,
>  {
>  	enum bpf_prog_type prog_type = resolve_prog_type(env->prog);
>  	bool rel = false, kptr_get = false, trusted_args = false;
> -	bool sleepable = false;
> +	bool sleepable = false, rcu_lock = false, rcu_unlock = false;
>  	struct bpf_verifier_log *log = &env->log;
>  	u32 i, nargs, ref_id, ref_obj_id = 0;
>  	bool is_kfunc = btf_is_kernel(btf);
> @@ -6356,6 +6361,31 @@ static int btf_check_func_arg_match(struct bpf_verifier_env *env,
>  		kptr_get = kfunc_meta->flags & KF_KPTR_GET;
>  		trusted_args = kfunc_meta->flags & KF_TRUSTED_ARGS;
>  		sleepable = kfunc_meta->flags & KF_SLEEPABLE;
> +		rcu_lock = kfunc_meta->flags & KF_RCU_LOCK;
> +		rcu_unlock = kfunc_meta->flags & KF_RCU_UNLOCK;
> +	}
> +
> +	/* checking rcu read lock/unlock */
> +	if (env->cur_state->active_rcu_lock > 0) {
> +		if (rcu_lock) {
> +			bpf_log(log, "nested rcu read lock (kernel function %s)\n", func_name);
> +			return -EINVAL;
> +		} else if (rcu_unlock) {
> +			/* change active_rcu_lock to its corresponding negative value to
> +			 * preserve the previous lock region id.
> +			 */
> +			env->cur_state->active_rcu_lock = -env->cur_state->active_rcu_lock;
> +		} else if (sleepable) {
> +			bpf_log(log, "kernel func %s is sleepable within rcu_read_lock region\n",
> +				func_name);
> +			return -EINVAL;
> +		}
> +	} else if (rcu_lock) {
> +		/* a new lock region started, increase the region id. */
> +		env->cur_state->active_rcu_lock = (-env->cur_state->active_rcu_lock) + 1;
> +	} else if (rcu_unlock) {
> +		bpf_log(log, "unmatched rcu read unlock (kernel function %s)\n", func_name);
> +		return -EINVAL;
>  	}
>

Can you provide more context on why having ids is better than simply
invalidating the registers when the section ends, and making active_rcu_lock a
boolean instead? You can use bpf_for_each_reg_in_vstate to find every reg having
MEM_RCU and mark it unknown.

You won't have to match the id in btf_struct_access as such registers won't ever
reach that function (if marked unknown on invalidation, they become scalars).
The reg state won't need another active_rcu_lock member either, it is simply
part of reg->type.

It seems to that simply invalidating registers when rcu_read_unlock is called is
both less code to write and simpler to understand.

Having ids also makes the pruning algorithm unecessarily conservative.
Later in states_equal, the check is:

> +	if (old->active_rcu_lock != cur->active_rcu_lock)
> +		return false;

which means even though the current state just holding the RCU read lock would
be enough to prune search, it would be rejected now due to distinct IDs (e.g. if
the current path didn't make exactly the same number of rcu_read_lock calls
compared to the old state).

Re: [PATCH bpf-next v2 4/8] bpf: Add kfunc bpf_rcu_read_lock/unlock()

[Kumar Kartikeya Dwivedi]

On Tue, Nov 08, 2022 at 01:11:09PM IST, Yonghong Song wrote:
> Add two kfunc's bpf_rcu_read_lock() and bpf_rcu_read_unlock(). These two kfunc's
> can be used for all program types. A new kfunc hook type BTF_KFUNC_HOOK_GENERIC
> is added which corresponds to prog type BPF_PROG_TYPE_UNSPEC, indicating the
> kfunc intends to be used for all prog types.
>
> The kfunc bpf_rcu_read_lock() is tagged with new flag KF_RCU_LOCK and
> bpf_rcu_read_unlock() with new flag KF_RCU_UNLOCK. These two new flags
> are used by the verifier to identify these two helpers.
>
> Signed-off-by: Yonghong Song <yhs@fb.com>
> ---
>  include/linux/bpf.h  |  3 +++
>  include/linux/btf.h  |  2 ++
>  kernel/bpf/btf.c     |  8 ++++++++
>  kernel/bpf/helpers.c | 25 ++++++++++++++++++++++++-
>  4 files changed, 37 insertions(+), 1 deletion(-)
>
> For new kfuncs, I added KF_RCU_LOCK and KF_RCU_UNLOCK flags to
> indicate a helper could be bpf_rcu_read_lock/unlock(). This could
> be a waste for kfunc flag space as the flag is used to identify
> one helper. Alternatively, we might identify kfunc based on
> btf_id. Any suggestions are welcome.
>

It can be done similar to this change:
https://lore.kernel.org/bpf/20221107230950.7117-17-memxor@gmail.com
So compare meta.func_id to special_kfunc_list[KF_bpf_rcu_read_lock].

Re: [PATCH bpf-next v2 4/8] bpf: Add kfunc bpf_rcu_read_lock/unlock()

[Yonghong Song]

On 11/8/22 9:09 AM, Kumar Kartikeya Dwivedi wrote:
> On Tue, Nov 08, 2022 at 01:11:09PM IST, Yonghong Song wrote:
>> Add two kfunc's bpf_rcu_read_lock() and bpf_rcu_read_unlock(). These two kfunc's
>> can be used for all program types. A new kfunc hook type BTF_KFUNC_HOOK_GENERIC
>> is added which corresponds to prog type BPF_PROG_TYPE_UNSPEC, indicating the
>> kfunc intends to be used for all prog types.
>>
>> The kfunc bpf_rcu_read_lock() is tagged with new flag KF_RCU_LOCK and
>> bpf_rcu_read_unlock() with new flag KF_RCU_UNLOCK. These two new flags
>> are used by the verifier to identify these two helpers.
>>
>> Signed-off-by: Yonghong Song <yhs@fb.com>
>> ---
>>   include/linux/bpf.h  |  3 +++
>>   include/linux/btf.h  |  2 ++
>>   kernel/bpf/btf.c     |  8 ++++++++
>>   kernel/bpf/helpers.c | 25 ++++++++++++++++++++++++-
>>   4 files changed, 37 insertions(+), 1 deletion(-)
>>
>> For new kfuncs, I added KF_RCU_LOCK and KF_RCU_UNLOCK flags to
>> indicate a helper could be bpf_rcu_read_lock/unlock(). This could
>> be a waste for kfunc flag space as the flag is used to identify
>> one helper. Alternatively, we might identify kfunc based on
>> btf_id. Any suggestions are welcome.
>>
> 
> It can be done similar to this change:
> https://lore.kernel.org/bpf/20221107230950.7117-17-memxor@gmail.com
> So compare meta.func_id to special_kfunc_list[KF_bpf_rcu_read_lock].

Thanks! This should be much better.

Re: [PATCH bpf-next v2 4/8] bpf: Add kfunc bpf_rcu_read_lock/unlock()

[Yonghong Song]

On 11/8/22 8:56 AM, Alexei Starovoitov wrote:
> On 11/7/22 11:41 PM, Yonghong Song wrote:
>> Add two kfunc's bpf_rcu_read_lock() and bpf_rcu_read_unlock(). These 
>> two kfunc's
>> can be used for all program types. A new kfunc hook type 
>> BTF_KFUNC_HOOK_GENERIC
>> is added which corresponds to prog type BPF_PROG_TYPE_UNSPEC, 
>> indicating the
>> kfunc intends to be used for all prog types.
>>
>> The kfunc bpf_rcu_read_lock() is tagged with new flag KF_RCU_LOCK and
>> bpf_rcu_read_unlock() with new flag KF_RCU_UNLOCK. These two new flags
>> are used by the verifier to identify these two helpers.
>>
>> Signed-off-by: Yonghong Song <yhs@fb.com>
>> ---
>>   include/linux/bpf.h  |  3 +++
>>   include/linux/btf.h  |  2 ++
>>   kernel/bpf/btf.c     |  8 ++++++++
>>   kernel/bpf/helpers.c | 25 ++++++++++++++++++++++++-
>>   4 files changed, 37 insertions(+), 1 deletion(-)
>>
>> For new kfuncs, I added KF_RCU_LOCK and KF_RCU_UNLOCK flags to
>> indicate a helper could be bpf_rcu_read_lock/unlock(). This could
>> be a waste for kfunc flag space as the flag is used to identify
>> one helper. Alternatively, we might identify kfunc based on
>> btf_id. Any suggestions are welcome.
>>
>> diff --git a/include/linux/bpf.h b/include/linux/bpf.h
>> index 5011cb50abf1..b4bbcafd1c9b 100644
>> --- a/include/linux/bpf.h
>> +++ b/include/linux/bpf.h
>> @@ -2118,6 +2118,9 @@ bool bpf_prog_has_kfunc_call(const struct 
>> bpf_prog *prog);
>>   const struct btf_func_model *
>>   bpf_jit_find_kfunc_model(const struct bpf_prog *prog,
>>                const struct bpf_insn *insn);
>> +void bpf_rcu_read_lock(void);
>> +void bpf_rcu_read_unlock(void);
>> +
>>   struct bpf_core_ctx {
>>       struct bpf_verifier_log *log;
>>       const struct btf *btf;
>> diff --git a/include/linux/btf.h b/include/linux/btf.h
>> index d80345fa566b..8783ca7e6079 100644
>> --- a/include/linux/btf.h
>> +++ b/include/linux/btf.h
>> @@ -51,6 +51,8 @@
>>   #define KF_TRUSTED_ARGS (1 << 4) /* kfunc only takes trusted pointer 
>> arguments */
>>   #define KF_SLEEPABLE    (1 << 5) /* kfunc may sleep */
>>   #define KF_DESTRUCTIVE  (1 << 6) /* kfunc performs destructive 
>> actions */
>> +#define KF_RCU_LOCK     (1 << 7) /* kfunc does rcu_read_lock() */
>> +#define KF_RCU_UNLOCK   (1 << 8) /* kfunc does rcu_read_unlock() */
> 
> Please don't use KF flags for these. It's not going to scale.
> Compare btf_id instead.

Will do. Kumar has a suggestion like:
   https://lore.kernel.org/bpf/20221107230950.7117-17-memxor@gmail.com
which I will explore.

Re: [PATCH bpf-next v2 5/8] bpf: Add bpf_rcu_read_lock() verifier support

[Yonghong Song]

On 11/8/22 9:04 AM, Kumar Kartikeya Dwivedi wrote:
> On Tue, Nov 08, 2022 at 01:11:14PM IST, Yonghong Song wrote:
>> To simplify the design and support the common practice, no
>> nested bpf_rcu_read_lock() is allowed. During verification,
>> each paired bpf_rcu_read_lock()/unlock() has a unique
>> region id, starting from 1. Each rcu ptr register also
>> remembers the region id when the ptr reg is initialized.
>> The following is a simple example to illustrate the
>> rcu lock regions and usage of rcu ptr's.
>>
>>       ...                    <=== rcu lock region 0
>>       bpf_rcu_read_lock()    <=== rcu lock region 1
>>       rcu_ptr1 = ...         <=== rcu_ptr1 with region 1
>>       ... using rcu_ptr1 ...
>>       bpf_rcu_read_unlock()
>>       ...                    <=== rcu lock region -1
>>       bpf_rcu_read_lock()    <=== rcu lock region 2
>>       rcu_ptr2 = ...         <=== rcu_ptr2 with region 2
>>       ... using rcu_ptr2 ...
>>       ... using rcu_ptr1 ... <=== wrong, region 1 rcu_ptr in region 2
>>       bpf_rcu_read_unlock()
>>
>> Outside the rcu lock region, the rcu lock region id is 0 or negative of
>> previous valid rcu lock region id, so the next valid rcu lock region
>> id can be easily computed.
>>
>> Note that rcu protection is not needed for non-sleepable program. But
>> it is supported to make cross-sleepable/nonsleepable development easier.
>> For non-sleepable program, the following insns can be inside the rcu
>> lock region:
>>    - any non call insns except BPF_ABS/BPF_IND
>>    - non sleepable helpers or kfuncs
>> Also, bpf_*_storage_get() helper's 5th hidden argument (for memory
>> allocation flag) should be GFP_ATOMIC.
>>
>> If a pointer (PTR_TO_BTF_ID) is marked as rcu, then any use of
>> this pointer and the load which gets this pointer needs to be
>> protected by bpf_rcu_read_lock(). The following shows a couple
>> of examples:
>>    struct task_struct {
>>          ...
>>          struct task_struct __rcu        *real_parent;
>>          struct css_set __rcu            *cgroups;
>>          ...
>>    };
>>    struct css_set {
>>          ...
>>          struct cgroup *dfl_cgrp;
>>          ...
>>    }
>>    ...
>>    task = bpf_get_current_task_btf();
>>    cgroups = task->cgroups;
>>    dfl_cgroup = cgroups->dfl_cgrp;
>>    ... using dfl_cgroup ...
>>
>> The bpf_rcu_read_lock/unlock() should be added like below to
>> avoid verification failures.
>>    task = bpf_get_current_task_btf();
>>    bpf_rcu_read_lock();
>>    cgroups = task->cgroups;
>>    dfl_cgroup = cgroups->dfl_cgrp;
>>    bpf_rcu_read_unlock();
>>    ... using dfl_cgroup ...
>>
>> The following is another example for task->real_parent.
>>    task = bpf_get_current_task_btf();
>>    bpf_rcu_read_lock();
>>    real_parent = task->real_parent;
>>    ... bpf_task_storage_get(&map, real_parent, 0, 0);
>>    bpf_rcu_read_unlock();
>>
>> Signed-off-by: Yonghong Song <yhs@fb.com>
>> ---
>>   include/linux/bpf.h          |  1 +
>>   include/linux/bpf_verifier.h |  7 +++
>>   kernel/bpf/btf.c             | 32 ++++++++++++-
>>   kernel/bpf/verifier.c        | 92 +++++++++++++++++++++++++++++++-----
>>   4 files changed, 120 insertions(+), 12 deletions(-)
>>
>> diff --git a/include/linux/bpf.h b/include/linux/bpf.h
>> index b4bbcafd1c9b..98af0c9ec721 100644
>> --- a/include/linux/bpf.h
>> +++ b/include/linux/bpf.h
>> @@ -761,6 +761,7 @@ struct bpf_prog_ops {
>>   struct btf_struct_access_info {
>>   	u32 next_btf_id;
>>   	enum bpf_type_flag flag;
>> +	bool is_rcu;
>>   };
>>
>>   struct bpf_verifier_ops {
>> diff --git a/include/linux/bpf_verifier.h b/include/linux/bpf_verifier.h
>> index 1a32baa78ce2..5d703637bb12 100644
>> --- a/include/linux/bpf_verifier.h
>> +++ b/include/linux/bpf_verifier.h
>> @@ -179,6 +179,10 @@ struct bpf_reg_state {
>>   	 */
>>   	s32 subreg_def;
>>   	enum bpf_reg_liveness live;
>> +	/* 0: not rcu ptr; > 0: rcu ptr, id of the rcu read lock region where
>> +	 * the rcu ptr reg is initialized.
>> +	 */
>> +	int active_rcu_lock;
>>   	/* if (!precise && SCALAR_VALUE) min/max/tnum don't affect safety */
>>   	bool precise;
>>   };
>> @@ -324,6 +328,8 @@ struct bpf_verifier_state {
>>   	u32 insn_idx;
>>   	u32 curframe;
>>   	u32 active_spin_lock;
>> +	/* <= 0: not in rcu read lock region; > 0: the rcu lock region id */
>> +	int active_rcu_lock;
>>   	bool speculative;
>>
>>   	/* first and last insn idx of this verifier state */
>> @@ -424,6 +430,7 @@ struct bpf_insn_aux_data {
>>   	u32 seen; /* this insn was processed by the verifier at env->pass_cnt */
>>   	bool sanitize_stack_spill; /* subject to Spectre v4 sanitation */
>>   	bool zext_dst; /* this insn zero extends dst reg */
>> +	bool storage_get_func_atomic; /* bpf_*_storage_get() with atomic memory alloc */
>>   	u8 alu_state; /* used in combination with alu_limit */
>>
>>   	/* below fields are initialized once */
>> diff --git a/kernel/bpf/btf.c b/kernel/bpf/btf.c
>> index d2ee1669a2f3..c5a9569f2ae0 100644
>> --- a/kernel/bpf/btf.c
>> +++ b/kernel/bpf/btf.c
>> @@ -5831,6 +5831,7 @@ static int btf_struct_walk(struct bpf_verifier_log *log, const struct btf *btf,
>>   		if (btf_type_is_ptr(mtype)) {
>>   			const struct btf_type *stype, *t;
>>   			enum bpf_type_flag tmp_flag = 0;
>> +			bool is_rcu = false;
>>   			u32 id;
>>
>>   			if (msize != size || off != moff) {
>> @@ -5850,12 +5851,16 @@ static int btf_struct_walk(struct bpf_verifier_log *log, const struct btf *btf,
>>   				/* check __percpu tag */
>>   				if (strcmp(tag_value, "percpu") == 0)
>>   					tmp_flag = MEM_PERCPU;
>> +				/* check __rcu tag */
>> +				if (strcmp(tag_value, "rcu") == 0)
>> +					is_rcu = true;
>>   			}
>>
>>   			stype = btf_type_skip_modifiers(btf, mtype->type, &id);
>>   			if (btf_type_is_struct(stype)) {
>>   				info->next_btf_id = id;
>>   				info->flag = tmp_flag;
>> +				info->is_rcu = is_rcu;
>>   				return WALK_PTR;
>>   			}
>>   		}
>> @@ -6317,7 +6322,7 @@ static int btf_check_func_arg_match(struct bpf_verifier_env *env,
>>   {
>>   	enum bpf_prog_type prog_type = resolve_prog_type(env->prog);
>>   	bool rel = false, kptr_get = false, trusted_args = false;
>> -	bool sleepable = false;
>> +	bool sleepable = false, rcu_lock = false, rcu_unlock = false;
>>   	struct bpf_verifier_log *log = &env->log;
>>   	u32 i, nargs, ref_id, ref_obj_id = 0;
>>   	bool is_kfunc = btf_is_kernel(btf);
>> @@ -6356,6 +6361,31 @@ static int btf_check_func_arg_match(struct bpf_verifier_env *env,
>>   		kptr_get = kfunc_meta->flags & KF_KPTR_GET;
>>   		trusted_args = kfunc_meta->flags & KF_TRUSTED_ARGS;
>>   		sleepable = kfunc_meta->flags & KF_SLEEPABLE;
>> +		rcu_lock = kfunc_meta->flags & KF_RCU_LOCK;
>> +		rcu_unlock = kfunc_meta->flags & KF_RCU_UNLOCK;
>> +	}
>> +
>> +	/* checking rcu read lock/unlock */
>> +	if (env->cur_state->active_rcu_lock > 0) {
>> +		if (rcu_lock) {
>> +			bpf_log(log, "nested rcu read lock (kernel function %s)\n", func_name);
>> +			return -EINVAL;
>> +		} else if (rcu_unlock) {
>> +			/* change active_rcu_lock to its corresponding negative value to
>> +			 * preserve the previous lock region id.
>> +			 */
>> +			env->cur_state->active_rcu_lock = -env->cur_state->active_rcu_lock;
>> +		} else if (sleepable) {
>> +			bpf_log(log, "kernel func %s is sleepable within rcu_read_lock region\n",
>> +				func_name);
>> +			return -EINVAL;
>> +		}
>> +	} else if (rcu_lock) {
>> +		/* a new lock region started, increase the region id. */
>> +		env->cur_state->active_rcu_lock = (-env->cur_state->active_rcu_lock) + 1;
>> +	} else if (rcu_unlock) {
>> +		bpf_log(log, "unmatched rcu read unlock (kernel function %s)\n", func_name);
>> +		return -EINVAL;
>>   	}
>>
> 
> Can you provide more context on why having ids is better than simply
> invalidating the registers when the section ends, and making active_rcu_lock a
> boolean instead? You can use bpf_for_each_reg_in_vstate to find every reg having
> MEM_RCU and mark it unknown.

I think we also need to invalidate rcu-ptr related states as well in spills.

I also tried to support cases like:
	bpf_rcu_read_lock();
	rcu_ptr = ...
	   ... rcu_ptr ...
	bpf_rcu_read_unlock();
	... rcu_ptr ... /* no load, just use the rcu_ptr somehow */

In the above case, outside the rcu read lock region, there is no
load with rcu_ptr but it can still be used for other purposes
with a property of a pointer.

But for a second thought, it should be okay to invalidate
rcu_ptr during bpf_rcu_read_unlock() as a scalar. This should
satisfy almost all (if not all) cases.

> 
> You won't have to match the id in btf_struct_access as such registers won't ever
> reach that function (if marked unknown on invalidation, they become scalars).
> The reg state won't need another active_rcu_lock member either, it is simply
> part of reg->type.

Right, if I don't maintain region id's, no need to have 
reg->active_rcu_lock and using MEM_RCU should be enough.

> 
> It seems to that simply invalidating registers when rcu_read_unlock is called is
> both less code to write and simpler to understand.

invalidating rcu_ptr in registers and spills.

Let me try to implement this and compare to my current approach. I guess
MEM_RCU + invalidation at bpf_rcu_read_unlock() should be simpler as you
suggested.

> 
> Having ids also makes the pruning algorithm unecessarily conservative.
> Later in states_equal, the check is:
> 
>> +	if (old->active_rcu_lock != cur->active_rcu_lock)
>> +		return false;
> 
> which means even though the current state just holding the RCU read lock would
> be enough to prune search, it would be rejected now due to distinct IDs (e.g. if
> the current path didn't make exactly the same number of rcu_read_lock calls
> compared to the old state).

That is true. We should also check old/new verifier state. If both
verifier state are not in rcu read lock region. The above check can
be ignored. But agree this becomes a little bit more complicated.

Re: [PATCH bpf-next v2 5/8] bpf: Add bpf_rcu_read_lock() verifier support

[Kumar Kartikeya Dwivedi]

On Wed, Nov 09, 2022 at 01:33:04AM IST, Yonghong Song wrote:
>
>
> On 11/8/22 9:04 AM, Kumar Kartikeya Dwivedi wrote:
> > On Tue, Nov 08, 2022 at 01:11:14PM IST, Yonghong Song wrote:
> > > To simplify the design and support the common practice, no
> > > nested bpf_rcu_read_lock() is allowed. During verification,
> > > each paired bpf_rcu_read_lock()/unlock() has a unique
> > > region id, starting from 1. Each rcu ptr register also
> > > remembers the region id when the ptr reg is initialized.
> > > The following is a simple example to illustrate the
> > > rcu lock regions and usage of rcu ptr's.
> > >
> > >       ...                    <=== rcu lock region 0
> > >       bpf_rcu_read_lock()    <=== rcu lock region 1
> > >       rcu_ptr1 = ...         <=== rcu_ptr1 with region 1
> > >       ... using rcu_ptr1 ...
> > >       bpf_rcu_read_unlock()
> > >       ...                    <=== rcu lock region -1
> > >       bpf_rcu_read_lock()    <=== rcu lock region 2
> > >       rcu_ptr2 = ...         <=== rcu_ptr2 with region 2
> > >       ... using rcu_ptr2 ...
> > >       ... using rcu_ptr1 ... <=== wrong, region 1 rcu_ptr in region 2
> > >       bpf_rcu_read_unlock()
> > >
> > > Outside the rcu lock region, the rcu lock region id is 0 or negative of
> > > previous valid rcu lock region id, so the next valid rcu lock region
> > > id can be easily computed.
> > >
> > > Note that rcu protection is not needed for non-sleepable program. But
> > > it is supported to make cross-sleepable/nonsleepable development easier.
> > > For non-sleepable program, the following insns can be inside the rcu
> > > lock region:
> > >    - any non call insns except BPF_ABS/BPF_IND
> > >    - non sleepable helpers or kfuncs
> > > Also, bpf_*_storage_get() helper's 5th hidden argument (for memory
> > > allocation flag) should be GFP_ATOMIC.
> > >
> > > If a pointer (PTR_TO_BTF_ID) is marked as rcu, then any use of
> > > this pointer and the load which gets this pointer needs to be
> > > protected by bpf_rcu_read_lock(). The following shows a couple
> > > of examples:
> > >    struct task_struct {
> > >          ...
> > >          struct task_struct __rcu        *real_parent;
> > >          struct css_set __rcu            *cgroups;
> > >          ...
> > >    };
> > >    struct css_set {
> > >          ...
> > >          struct cgroup *dfl_cgrp;
> > >          ...
> > >    }
> > >    ...
> > >    task = bpf_get_current_task_btf();
> > >    cgroups = task->cgroups;
> > >    dfl_cgroup = cgroups->dfl_cgrp;
> > >    ... using dfl_cgroup ...
> > >
> > > The bpf_rcu_read_lock/unlock() should be added like below to
> > > avoid verification failures.
> > >    task = bpf_get_current_task_btf();
> > >    bpf_rcu_read_lock();
> > >    cgroups = task->cgroups;
> > >    dfl_cgroup = cgroups->dfl_cgrp;
> > >    bpf_rcu_read_unlock();
> > >    ... using dfl_cgroup ...
> > >
> > > The following is another example for task->real_parent.
> > >    task = bpf_get_current_task_btf();
> > >    bpf_rcu_read_lock();
> > >    real_parent = task->real_parent;
> > >    ... bpf_task_storage_get(&map, real_parent, 0, 0);
> > >    bpf_rcu_read_unlock();
> > >
> > > Signed-off-by: Yonghong Song <yhs@fb.com>
> > > ---
> > >   include/linux/bpf.h          |  1 +
> > >   include/linux/bpf_verifier.h |  7 +++
> > >   kernel/bpf/btf.c             | 32 ++++++++++++-
> > >   kernel/bpf/verifier.c        | 92 +++++++++++++++++++++++++++++++-----
> > >   4 files changed, 120 insertions(+), 12 deletions(-)
> > >
> > > diff --git a/include/linux/bpf.h b/include/linux/bpf.h
> > > index b4bbcafd1c9b..98af0c9ec721 100644
> > > --- a/include/linux/bpf.h
> > > +++ b/include/linux/bpf.h
> > > @@ -761,6 +761,7 @@ struct bpf_prog_ops {
> > >   struct btf_struct_access_info {
> > >   	u32 next_btf_id;
> > >   	enum bpf_type_flag flag;
> > > +	bool is_rcu;
> > >   };
> > >
> > >   struct bpf_verifier_ops {
> > > diff --git a/include/linux/bpf_verifier.h b/include/linux/bpf_verifier.h
> > > index 1a32baa78ce2..5d703637bb12 100644
> > > --- a/include/linux/bpf_verifier.h
> > > +++ b/include/linux/bpf_verifier.h
> > > @@ -179,6 +179,10 @@ struct bpf_reg_state {
> > >   	 */
> > >   	s32 subreg_def;
> > >   	enum bpf_reg_liveness live;
> > > +	/* 0: not rcu ptr; > 0: rcu ptr, id of the rcu read lock region where
> > > +	 * the rcu ptr reg is initialized.
> > > +	 */
> > > +	int active_rcu_lock;
> > >   	/* if (!precise && SCALAR_VALUE) min/max/tnum don't affect safety */
> > >   	bool precise;
> > >   };
> > > @@ -324,6 +328,8 @@ struct bpf_verifier_state {
> > >   	u32 insn_idx;
> > >   	u32 curframe;
> > >   	u32 active_spin_lock;
> > > +	/* <= 0: not in rcu read lock region; > 0: the rcu lock region id */
> > > +	int active_rcu_lock;
> > >   	bool speculative;
> > >
> > >   	/* first and last insn idx of this verifier state */
> > > @@ -424,6 +430,7 @@ struct bpf_insn_aux_data {
> > >   	u32 seen; /* this insn was processed by the verifier at env->pass_cnt */
> > >   	bool sanitize_stack_spill; /* subject to Spectre v4 sanitation */
> > >   	bool zext_dst; /* this insn zero extends dst reg */
> > > +	bool storage_get_func_atomic; /* bpf_*_storage_get() with atomic memory alloc */
> > >   	u8 alu_state; /* used in combination with alu_limit */
> > >
> > >   	/* below fields are initialized once */
> > > diff --git a/kernel/bpf/btf.c b/kernel/bpf/btf.c
> > > index d2ee1669a2f3..c5a9569f2ae0 100644
> > > --- a/kernel/bpf/btf.c
> > > +++ b/kernel/bpf/btf.c
> > > @@ -5831,6 +5831,7 @@ static int btf_struct_walk(struct bpf_verifier_log *log, const struct btf *btf,
> > >   		if (btf_type_is_ptr(mtype)) {
> > >   			const struct btf_type *stype, *t;
> > >   			enum bpf_type_flag tmp_flag = 0;
> > > +			bool is_rcu = false;
> > >   			u32 id;
> > >
> > >   			if (msize != size || off != moff) {
> > > @@ -5850,12 +5851,16 @@ static int btf_struct_walk(struct bpf_verifier_log *log, const struct btf *btf,
> > >   				/* check __percpu tag */
> > >   				if (strcmp(tag_value, "percpu") == 0)
> > >   					tmp_flag = MEM_PERCPU;
> > > +				/* check __rcu tag */
> > > +				if (strcmp(tag_value, "rcu") == 0)
> > > +					is_rcu = true;
> > >   			}
> > >
> > >   			stype = btf_type_skip_modifiers(btf, mtype->type, &id);
> > >   			if (btf_type_is_struct(stype)) {
> > >   				info->next_btf_id = id;
> > >   				info->flag = tmp_flag;
> > > +				info->is_rcu = is_rcu;
> > >   				return WALK_PTR;
> > >   			}
> > >   		}
> > > @@ -6317,7 +6322,7 @@ static int btf_check_func_arg_match(struct bpf_verifier_env *env,
> > >   {
> > >   	enum bpf_prog_type prog_type = resolve_prog_type(env->prog);
> > >   	bool rel = false, kptr_get = false, trusted_args = false;
> > > -	bool sleepable = false;
> > > +	bool sleepable = false, rcu_lock = false, rcu_unlock = false;
> > >   	struct bpf_verifier_log *log = &env->log;
> > >   	u32 i, nargs, ref_id, ref_obj_id = 0;
> > >   	bool is_kfunc = btf_is_kernel(btf);
> > > @@ -6356,6 +6361,31 @@ static int btf_check_func_arg_match(struct bpf_verifier_env *env,
> > >   		kptr_get = kfunc_meta->flags & KF_KPTR_GET;
> > >   		trusted_args = kfunc_meta->flags & KF_TRUSTED_ARGS;
> > >   		sleepable = kfunc_meta->flags & KF_SLEEPABLE;
> > > +		rcu_lock = kfunc_meta->flags & KF_RCU_LOCK;
> > > +		rcu_unlock = kfunc_meta->flags & KF_RCU_UNLOCK;
> > > +	}
> > > +
> > > +	/* checking rcu read lock/unlock */
> > > +	if (env->cur_state->active_rcu_lock > 0) {
> > > +		if (rcu_lock) {
> > > +			bpf_log(log, "nested rcu read lock (kernel function %s)\n", func_name);
> > > +			return -EINVAL;
> > > +		} else if (rcu_unlock) {
> > > +			/* change active_rcu_lock to its corresponding negative value to
> > > +			 * preserve the previous lock region id.
> > > +			 */
> > > +			env->cur_state->active_rcu_lock = -env->cur_state->active_rcu_lock;
> > > +		} else if (sleepable) {
> > > +			bpf_log(log, "kernel func %s is sleepable within rcu_read_lock region\n",
> > > +				func_name);
> > > +			return -EINVAL;
> > > +		}
> > > +	} else if (rcu_lock) {
> > > +		/* a new lock region started, increase the region id. */
> > > +		env->cur_state->active_rcu_lock = (-env->cur_state->active_rcu_lock) + 1;
> > > +	} else if (rcu_unlock) {
> > > +		bpf_log(log, "unmatched rcu read unlock (kernel function %s)\n", func_name);
> > > +		return -EINVAL;
> > >   	}
> > >
> >
> > Can you provide more context on why having ids is better than simply
> > invalidating the registers when the section ends, and making active_rcu_lock a
> > boolean instead? You can use bpf_for_each_reg_in_vstate to find every reg having
> > MEM_RCU and mark it unknown.
>
> I think we also need to invalidate rcu-ptr related states as well in spills.
>
> I also tried to support cases like:
> 	bpf_rcu_read_lock();
> 	rcu_ptr = ...
> 	   ... rcu_ptr ...
> 	bpf_rcu_read_unlock();
> 	... rcu_ptr ... /* no load, just use the rcu_ptr somehow */
>
> In the above case, outside the rcu read lock region, there is no
> load with rcu_ptr but it can still be used for other purposes
> with a property of a pointer.
>
> But for a second thought, it should be okay to invalidate
> rcu_ptr during bpf_rcu_read_unlock() as a scalar. This should
> satisfy almost all (if not all) cases.
>
> >
> > You won't have to match the id in btf_struct_access as such registers won't ever
> > reach that function (if marked unknown on invalidation, they become scalars).
> > The reg state won't need another active_rcu_lock member either, it is simply
> > part of reg->type.
>
> Right, if I don't maintain region id's, no need to have reg->active_rcu_lock
> and using MEM_RCU should be enough.
>
> >
> > It seems to that simply invalidating registers when rcu_read_unlock is called is
> > both less code to write and simpler to understand.
>
> invalidating rcu_ptr in registers and spills.
>

If you use bpf_for_each_reg_in_vstate, it should cover both.

Re: [PATCH bpf-next v2 5/8] bpf: Add bpf_rcu_read_lock() verifier support

[Yonghong Song]

On 11/8/22 12:19 PM, Kumar Kartikeya Dwivedi wrote:
> On Wed, Nov 09, 2022 at 01:33:04AM IST, Yonghong Song wrote:
>>
>>
>> On 11/8/22 9:04 AM, Kumar Kartikeya Dwivedi wrote:
>>> On Tue, Nov 08, 2022 at 01:11:14PM IST, Yonghong Song wrote:
>>>> To simplify the design and support the common practice, no
>>>> nested bpf_rcu_read_lock() is allowed. During verification,
>>>> each paired bpf_rcu_read_lock()/unlock() has a unique
>>>> region id, starting from 1. Each rcu ptr register also
>>>> remembers the region id when the ptr reg is initialized.
>>>> The following is a simple example to illustrate the
>>>> rcu lock regions and usage of rcu ptr's.
>>>>
>>>>        ...                    <=== rcu lock region 0
>>>>        bpf_rcu_read_lock()    <=== rcu lock region 1
>>>>        rcu_ptr1 = ...         <=== rcu_ptr1 with region 1
>>>>        ... using rcu_ptr1 ...
>>>>        bpf_rcu_read_unlock()
>>>>        ...                    <=== rcu lock region -1
>>>>        bpf_rcu_read_lock()    <=== rcu lock region 2
>>>>        rcu_ptr2 = ...         <=== rcu_ptr2 with region 2
>>>>        ... using rcu_ptr2 ...
>>>>        ... using rcu_ptr1 ... <=== wrong, region 1 rcu_ptr in region 2
>>>>        bpf_rcu_read_unlock()
>>>>
>>>> Outside the rcu lock region, the rcu lock region id is 0 or negative of
>>>> previous valid rcu lock region id, so the next valid rcu lock region
>>>> id can be easily computed.
>>>>
>>>> Note that rcu protection is not needed for non-sleepable program. But
>>>> it is supported to make cross-sleepable/nonsleepable development easier.
>>>> For non-sleepable program, the following insns can be inside the rcu
>>>> lock region:
>>>>     - any non call insns except BPF_ABS/BPF_IND
>>>>     - non sleepable helpers or kfuncs
>>>> Also, bpf_*_storage_get() helper's 5th hidden argument (for memory
>>>> allocation flag) should be GFP_ATOMIC.
>>>>
>>>> If a pointer (PTR_TO_BTF_ID) is marked as rcu, then any use of
>>>> this pointer and the load which gets this pointer needs to be
>>>> protected by bpf_rcu_read_lock(). The following shows a couple
>>>> of examples:
>>>>     struct task_struct {
>>>>           ...
>>>>           struct task_struct __rcu        *real_parent;
>>>>           struct css_set __rcu            *cgroups;
>>>>           ...
>>>>     };
>>>>     struct css_set {
>>>>           ...
>>>>           struct cgroup *dfl_cgrp;
>>>>           ...
>>>>     }
>>>>     ...
>>>>     task = bpf_get_current_task_btf();
>>>>     cgroups = task->cgroups;
>>>>     dfl_cgroup = cgroups->dfl_cgrp;
>>>>     ... using dfl_cgroup ...
>>>>
>>>> The bpf_rcu_read_lock/unlock() should be added like below to
>>>> avoid verification failures.
>>>>     task = bpf_get_current_task_btf();
>>>>     bpf_rcu_read_lock();
>>>>     cgroups = task->cgroups;
>>>>     dfl_cgroup = cgroups->dfl_cgrp;
>>>>     bpf_rcu_read_unlock();
>>>>     ... using dfl_cgroup ...
>>>>
>>>> The following is another example for task->real_parent.
>>>>     task = bpf_get_current_task_btf();
>>>>     bpf_rcu_read_lock();
>>>>     real_parent = task->real_parent;
>>>>     ... bpf_task_storage_get(&map, real_parent, 0, 0);
>>>>     bpf_rcu_read_unlock();
>>>>
>>>> Signed-off-by: Yonghong Song <yhs@fb.com>
>>>> ---
>>>>    include/linux/bpf.h          |  1 +
>>>>    include/linux/bpf_verifier.h |  7 +++
>>>>    kernel/bpf/btf.c             | 32 ++++++++++++-
>>>>    kernel/bpf/verifier.c        | 92 +++++++++++++++++++++++++++++++-----
>>>>    4 files changed, 120 insertions(+), 12 deletions(-)
>>>>
>>>> diff --git a/include/linux/bpf.h b/include/linux/bpf.h
>>>> index b4bbcafd1c9b..98af0c9ec721 100644
>>>> --- a/include/linux/bpf.h
>>>> +++ b/include/linux/bpf.h
>>>> @@ -761,6 +761,7 @@ struct bpf_prog_ops {
>>>>    struct btf_struct_access_info {
>>>>    	u32 next_btf_id;
>>>>    	enum bpf_type_flag flag;
>>>> +	bool is_rcu;
>>>>    };
>>>>
>>>>    struct bpf_verifier_ops {
>>>> diff --git a/include/linux/bpf_verifier.h b/include/linux/bpf_verifier.h
>>>> index 1a32baa78ce2..5d703637bb12 100644
>>>> --- a/include/linux/bpf_verifier.h
>>>> +++ b/include/linux/bpf_verifier.h
>>>> @@ -179,6 +179,10 @@ struct bpf_reg_state {
>>>>    	 */
>>>>    	s32 subreg_def;
>>>>    	enum bpf_reg_liveness live;
>>>> +	/* 0: not rcu ptr; > 0: rcu ptr, id of the rcu read lock region where
>>>> +	 * the rcu ptr reg is initialized.
>>>> +	 */
>>>> +	int active_rcu_lock;
>>>>    	/* if (!precise && SCALAR_VALUE) min/max/tnum don't affect safety */
>>>>    	bool precise;
>>>>    };
>>>> @@ -324,6 +328,8 @@ struct bpf_verifier_state {
>>>>    	u32 insn_idx;
>>>>    	u32 curframe;
>>>>    	u32 active_spin_lock;
>>>> +	/* <= 0: not in rcu read lock region; > 0: the rcu lock region id */
>>>> +	int active_rcu_lock;
>>>>    	bool speculative;
>>>>
>>>>    	/* first and last insn idx of this verifier state */
>>>> @@ -424,6 +430,7 @@ struct bpf_insn_aux_data {
>>>>    	u32 seen; /* this insn was processed by the verifier at env->pass_cnt */
>>>>    	bool sanitize_stack_spill; /* subject to Spectre v4 sanitation */
>>>>    	bool zext_dst; /* this insn zero extends dst reg */
>>>> +	bool storage_get_func_atomic; /* bpf_*_storage_get() with atomic memory alloc */
>>>>    	u8 alu_state; /* used in combination with alu_limit */
>>>>
>>>>    	/* below fields are initialized once */
>>>> diff --git a/kernel/bpf/btf.c b/kernel/bpf/btf.c
>>>> index d2ee1669a2f3..c5a9569f2ae0 100644
>>>> --- a/kernel/bpf/btf.c
>>>> +++ b/kernel/bpf/btf.c
>>>> @@ -5831,6 +5831,7 @@ static int btf_struct_walk(struct bpf_verifier_log *log, const struct btf *btf,
>>>>    		if (btf_type_is_ptr(mtype)) {
>>>>    			const struct btf_type *stype, *t;
>>>>    			enum bpf_type_flag tmp_flag = 0;
>>>> +			bool is_rcu = false;
>>>>    			u32 id;
>>>>
>>>>    			if (msize != size || off != moff) {
>>>> @@ -5850,12 +5851,16 @@ static int btf_struct_walk(struct bpf_verifier_log *log, const struct btf *btf,
>>>>    				/* check __percpu tag */
>>>>    				if (strcmp(tag_value, "percpu") == 0)
>>>>    					tmp_flag = MEM_PERCPU;
>>>> +				/* check __rcu tag */
>>>> +				if (strcmp(tag_value, "rcu") == 0)
>>>> +					is_rcu = true;
>>>>    			}
>>>>
>>>>    			stype = btf_type_skip_modifiers(btf, mtype->type, &id);
>>>>    			if (btf_type_is_struct(stype)) {
>>>>    				info->next_btf_id = id;
>>>>    				info->flag = tmp_flag;
>>>> +				info->is_rcu = is_rcu;
>>>>    				return WALK_PTR;
>>>>    			}
>>>>    		}
>>>> @@ -6317,7 +6322,7 @@ static int btf_check_func_arg_match(struct bpf_verifier_env *env,
>>>>    {
>>>>    	enum bpf_prog_type prog_type = resolve_prog_type(env->prog);
>>>>    	bool rel = false, kptr_get = false, trusted_args = false;
>>>> -	bool sleepable = false;
>>>> +	bool sleepable = false, rcu_lock = false, rcu_unlock = false;
>>>>    	struct bpf_verifier_log *log = &env->log;
>>>>    	u32 i, nargs, ref_id, ref_obj_id = 0;
>>>>    	bool is_kfunc = btf_is_kernel(btf);
>>>> @@ -6356,6 +6361,31 @@ static int btf_check_func_arg_match(struct bpf_verifier_env *env,
>>>>    		kptr_get = kfunc_meta->flags & KF_KPTR_GET;
>>>>    		trusted_args = kfunc_meta->flags & KF_TRUSTED_ARGS;
>>>>    		sleepable = kfunc_meta->flags & KF_SLEEPABLE;
>>>> +		rcu_lock = kfunc_meta->flags & KF_RCU_LOCK;
>>>> +		rcu_unlock = kfunc_meta->flags & KF_RCU_UNLOCK;
>>>> +	}
>>>> +
>>>> +	/* checking rcu read lock/unlock */
>>>> +	if (env->cur_state->active_rcu_lock > 0) {
>>>> +		if (rcu_lock) {
>>>> +			bpf_log(log, "nested rcu read lock (kernel function %s)\n", func_name);
>>>> +			return -EINVAL;
>>>> +		} else if (rcu_unlock) {
>>>> +			/* change active_rcu_lock to its corresponding negative value to
>>>> +			 * preserve the previous lock region id.
>>>> +			 */
>>>> +			env->cur_state->active_rcu_lock = -env->cur_state->active_rcu_lock;
>>>> +		} else if (sleepable) {
>>>> +			bpf_log(log, "kernel func %s is sleepable within rcu_read_lock region\n",
>>>> +				func_name);
>>>> +			return -EINVAL;
>>>> +		}
>>>> +	} else if (rcu_lock) {
>>>> +		/* a new lock region started, increase the region id. */
>>>> +		env->cur_state->active_rcu_lock = (-env->cur_state->active_rcu_lock) + 1;
>>>> +	} else if (rcu_unlock) {
>>>> +		bpf_log(log, "unmatched rcu read unlock (kernel function %s)\n", func_name);
>>>> +		return -EINVAL;
>>>>    	}
>>>>
>>>
>>> Can you provide more context on why having ids is better than simply
>>> invalidating the registers when the section ends, and making active_rcu_lock a
>>> boolean instead? You can use bpf_for_each_reg_in_vstate to find every reg having
>>> MEM_RCU and mark it unknown.
>>
>> I think we also need to invalidate rcu-ptr related states as well in spills.
>>
>> I also tried to support cases like:
>> 	bpf_rcu_read_lock();
>> 	rcu_ptr = ...
>> 	   ... rcu_ptr ...
>> 	bpf_rcu_read_unlock();
>> 	... rcu_ptr ... /* no load, just use the rcu_ptr somehow */
>>
>> In the above case, outside the rcu read lock region, there is no
>> load with rcu_ptr but it can still be used for other purposes
>> with a property of a pointer.
>>
>> But for a second thought, it should be okay to invalidate
>> rcu_ptr during bpf_rcu_read_unlock() as a scalar. This should
>> satisfy almost all (if not all) cases.
>>
>>>
>>> You won't have to match the id in btf_struct_access as such registers won't ever
>>> reach that function (if marked unknown on invalidation, they become scalars).
>>> The reg state won't need another active_rcu_lock member either, it is simply
>>> part of reg->type.
>>
>> Right, if I don't maintain region id's, no need to have reg->active_rcu_lock
>> and using MEM_RCU should be enough.
>>
>>>
>>> It seems to that simply invalidating registers when rcu_read_unlock is called is
>>> both less code to write and simpler to understand.
>>
>> invalidating rcu_ptr in registers and spills.
>>
> 
> If you use bpf_for_each_reg_in_vstate, it should cover both.

Just checked the macro implementation. Yes, it covers both reg and 
spills. Thanks for mentioning bpf_for_each_reg_in_vstate which I
am not aware of.