[PATCH 6.1 00/73] 6.1.155-rc1 review

[PATCH 6.1 00/73] 6.1.155-rc1 review

[Greg Kroah-Hartman]

This is the start of the stable review cycle for the 6.1.155 release.
There are 73 patches in this series, all will be posted as a response
to this one.  If anyone has any issues with these being applied, please
let me know.

Responses should be made by Thu, 02 Oct 2025 14:37:59 +0000.
Anything received after that time might be too late.

The whole patch series can be found in one patch at:
	https://www.kernel.org/pub/linux/kernel/v6.x/stable-review/patch-6.1.155-rc1.gz
or in the git tree and branch at:
	git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-6.1.y
and the diffstat can be found below.

thanks,

greg k-h

-------------
Pseudo-Shortlog of commits:

Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    Linux 6.1.155-rc1

Linus Torvalds <torvalds@linux-foundation.org>
    minmax: simplify and clarify min_t()/max_t() implementation

Linus Torvalds <torvalds@linux-foundation.org>
    minmax: add a few more MIN_T/MAX_T users

Linus Torvalds <torvalds@linux-foundation.org>
    minmax: make generic MIN() and MAX() macros available everywhere

Eric Biggers <ebiggers@kernel.org>
    kmsan: fix out-of-bounds access to shadow memory

Lukasz Czapnik <lukasz.czapnik@intel.com>
    i40e: add validation for ring_len param

Justin Bronder <jsbronder@cold-front.org>
    i40e: increase max descriptors for XL710

Lukasz Czapnik <lukasz.czapnik@intel.com>
    i40e: fix idx validation in config queues msg

Lukasz Czapnik <lukasz.czapnik@intel.com>
    i40e: fix validation of VF state in get resources

Nirmoy Das <nirmoyd@nvidia.com>
    drm/ast: Use msleep instead of mdelay for edid read

Linus Torvalds <torvalds@linux-foundation.org>
    minmax: avoid overly complicated constant expressions in VM code

David Laight <David.Laight@ACULAB.COM>
    minmax: fix indentation of __cmp_once() and __clamp_once()

Andy Shevchenko <andriy.shevchenko@linux.intel.com>
    minmax: deduplicate __unconst_integer_typeof()

Herve Codina <herve.codina@bootlin.com>
    minmax: Introduce {min,max}_array()

Matthew Wilcox (Oracle) <willy@infradead.org>
    minmax: add in_range() macro

David Hildenbrand <david@redhat.com>
    mm/migrate_device: don't add folio to be freed to LRU in migrate_device_finalize()

Kefeng Wang <wangkefeng.wang@huawei.com>
    mm: migrate_device: use more folio in migrate_device_finalize()

Nathan Chancellor <nathan@kernel.org>
    s390/cpum_cf: Fix uninitialized warning after backport of ce971233242b

Thomas Zimmermann <tzimmermann@suse.de>
    fbcon: Fix OOB access in font allocation

Samasth Norway Ananda <samasth.norway.ananda@oracle.com>
    fbcon: fix integer overflow in fbcon_do_set_font

Jinjiang Tu <tujinjiang@huawei.com>
    mm/hugetlb: fix folio is still mapped when deleted

Zhen Ni <zhen.ni@easystack.cn>
    afs: Fix potential null pointer dereference in afs_put_server

Masami Hiramatsu (Google) <mhiramat@kernel.org>
    tracing: dynevent: Add a missing lockdown check on dynevent

Eric Biggers <ebiggers@kernel.org>
    crypto: af_alg - Fix incorrect boolean values in af_alg_ctx

Lukasz Czapnik <lukasz.czapnik@intel.com>
    i40e: improve VF MAC filters accounting

Lukasz Czapnik <lukasz.czapnik@intel.com>
    i40e: add mask to apply valid bits for itr_idx

Lukasz Czapnik <lukasz.czapnik@intel.com>
    i40e: add max boundary check for VF filters

Lukasz Czapnik <lukasz.czapnik@intel.com>
    i40e: fix input validation logic for action_meta

Lukasz Czapnik <lukasz.czapnik@intel.com>
    i40e: fix idx validation in i40e_validate_queue_map

Sebastian Andrzej Siewior <bigeasy@linutronix.de>
    futex: Prevent use-after-free during requeue-PI

Zabelin Nikita <n.zabelin@mt-integration.ru>
    drm/gma500: Fix null dereference in hdmi teardown

Dan Carpenter <dan.carpenter@linaro.org>
    octeontx2-pf: Fix potential use after free in otx2_tc_add_flow()

Vladimir Oltean <vladimir.oltean@nxp.com>
    net: dsa: lantiq_gswip: suppress -EINVAL errors for bridge FDB entries added to the CPU port

Vladimir Oltean <vladimir.oltean@nxp.com>
    net: dsa: lantiq_gswip: move gswip_add_single_port_br() call to port_setup()

Martin Schiller <ms@dev.tdt.de>
    net: dsa: lantiq_gswip: do also enable or disable cpu port

Ido Schimmel <idosch@nvidia.com>
    selftests: fib_nexthops: Fix creation of non-FDB nexthops

Ido Schimmel <idosch@nvidia.com>
    nexthop: Forbid FDB status change while nexthop is in a group

Alok Tiwari <alok.a.tiwari@oracle.com>
    bnxt_en: correct offset handling for IPv6 destination address

Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
    Bluetooth: hci_event: Fix UAF in hci_acl_create_conn_sync

Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
    Bluetooth: hci_sync: Fix hci_resume_advertising_sync

Petr Malat <oss@malat.biz>
    ethernet: rvu-af: Remove slash from the driver name

Stéphane Grosjean <stephane.grosjean@hms-networks.com>
    can: peak_usb: fix shift-out-of-bounds issue

Vincent Mailhol <mailhol@kernel.org>
    can: mcba_usb: populate ndo_change_mtu() to prevent buffer overflow

Vincent Mailhol <mailhol@kernel.org>
    can: sun4i_can: populate ndo_change_mtu() to prevent buffer overflow

Vincent Mailhol <mailhol@kernel.org>
    can: hi311x: populate ndo_change_mtu() to prevent buffer overflow

Vincent Mailhol <mailhol@kernel.org>
    can: etas_es58x: populate ndo_change_mtu() to prevent buffer overflow

Vincent Mailhol <mailhol.vincent@wanadoo.fr>
    can: etas_es58x: sort the includes by alphabetic order

Leon Hwang <leon.hwang@linux.dev>
    bpf: Reject bpf_timer for PREEMPT_RT

Geert Uytterhoeven <geert+renesas@glider.be>
    can: rcar_can: rcar_can_resume(): fix s2ram with PSCI

Stefan Metzmacher <metze@samba.org>
    smb: server: don't use delayed_work for post_recv_credits_work

Christian Loehle <christian.loehle@arm.com>
    cpufreq: Initialize cpufreq-based invariance before subsys

Peng Fan <peng.fan@nxp.com>
    arm64: dts: imx8mp: Correct thermal sensor index

Hugh Dickins <hughd@google.com>
    mm: folio_may_be_lru_cached() unless folio_test_large()

Hugh Dickins <hughd@google.com>
    mm/gup: local lru_add_drain() to avoid lru_add_drain_all()

Hugh Dickins <hughd@google.com>
    mm/gup: check ref_count instead of lru before migration

Shivank Garg <shivankg@amd.com>
    mm: add folio_expected_ref_count() for reference count calculation

David Hildenbrand <david@redhat.com>
    mm/gup: revert "mm: gup: fix infinite loop within __get_longterm_locked"

Or Har-Toov <ohartoov@nvidia.com>
    IB/mlx5: Fix obj_type mismatch for SRQ event subscriptions

qaqland <anguoli@uniontech.com>
    ALSA: usb-audio: Add mute TLV for playback volumes on more devices

Cryolitia PukNgae <cryolitia@uniontech.com>
    ALSA: usb-audio: move mixer_quirks' min_mute into common quirk

noble.yang <noble.yang@comtrue-inc.com>
    ALSA: usb-audio: Add DSD support for Comtrue USB Audio device

Jiayi Li <lijiayi@kylinos.cn>
    usb: core: Add 0x prefix to quirks debug output

Takashi Iwai <tiwai@suse.de>
    ALSA: usb-audio: Fix build with CONFIG_INPUT=n

Chen Ni <nichen@iscas.ac.cn>
    ALSA: usb-audio: Convert comma to semicolon

Kerem Karabay <kekrby@gmail.com>
    HID: multitouch: specify that Apple Touch Bar is direct

Kerem Karabay <kekrby@gmail.com>
    HID: multitouch: take cls->maxcontacts into account for Apple Touch Bar even without a HID_DG_CONTACTMAX field

Kerem Karabay <kekrby@gmail.com>
    HID: multitouch: support getting the tip state from HID_DG_TOUCH fields in Apple Touch Bar

Kerem Karabay <kekrby@gmail.com>
    HID: multitouch: Get the contact ID from HID_DG_TRANSDUCER_INDEX fields in case of Apple Touch Bar

Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
    ALSA: usb-audio: Add mixer quirk for Sony DualSense PS5

Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
    ALSA: usb-audio: Remove unneeded wmb() in mixer_quirks

Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
    ALSA: usb-audio: Simplify NULL comparison in mixer_quirks

Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
    ALSA: usb-audio: Avoid multiple assignments in mixer_quirks

Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
    ALSA: usb-audio: Drop unnecessary parentheses in mixer_quirks

Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
    ALSA: usb-audio: Fix block comments in mixer_quirks


-------------

Diffstat:

 Makefile                                           |   4 +-
 arch/arm/mm/pageattr.c                             |   6 +-
 arch/arm64/boot/dts/freescale/imx8mp.dtsi          |   4 +-
 arch/s390/kernel/perf_cpum_cf.c                    |   4 +-
 arch/um/drivers/mconsole_user.c                    |   2 +
 arch/x86/mm/pgtable.c                              |   2 +-
 drivers/cpufreq/cpufreq.c                          |  20 +-
 drivers/edac/sb_edac.c                             |   4 +-
 drivers/edac/skx_common.h                          |   1 -
 drivers/gpu/drm/amd/amdgpu/amdgpu.h                |   2 +
 .../gpu/drm/amd/display/modules/hdcp/hdcp_ddc.c    |   2 +
 drivers/gpu/drm/amd/pm/powerplay/hwmgr/ppevvmath.h |  14 +-
 .../drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c    |   2 +
 .../gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_0_ppt.c   |   3 +
 .../gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_7_ppt.c   |   3 +
 drivers/gpu/drm/arm/display/include/malidp_utils.h |   2 +-
 .../drm/arm/display/komeda/komeda_pipeline_state.c |  24 +-
 drivers/gpu/drm/ast/ast_dp.c                       |   2 +-
 drivers/gpu/drm/drm_color_mgmt.c                   |   2 +-
 drivers/gpu/drm/gma500/oaktrail_hdmi.c             |   2 +-
 drivers/gpu/drm/msm/adreno/a6xx_gmu.c              |   6 -
 drivers/gpu/drm/radeon/evergreen_cs.c              |   2 +
 drivers/hid/hid-multitouch.c                       |  45 +++-
 drivers/hwmon/adt7475.c                            |  24 +-
 drivers/infiniband/hw/mlx5/devx.c                  |   1 +
 drivers/md/dm-integrity.c                          |   2 +-
 drivers/media/dvb-frontends/stv0367_priv.h         |   3 +
 drivers/net/can/rcar/rcar_can.c                    |   8 +-
 drivers/net/can/spi/hi311x.c                       |   1 +
 drivers/net/can/sun4i_can.c                        |   1 +
 drivers/net/can/usb/etas_es58x/es581_4.c           |   4 +-
 drivers/net/can/usb/etas_es58x/es58x_core.c        |   7 +-
 drivers/net/can/usb/etas_es58x/es58x_core.h        |   8 +-
 drivers/net/can/usb/etas_es58x/es58x_fd.c          |   4 +-
 drivers/net/can/usb/mcba_usb.c                     |   1 +
 drivers/net/can/usb/peak_usb/pcan_usb_core.c       |   2 +-
 drivers/net/dsa/lantiq_gswip.c                     |  41 +--
 drivers/net/ethernet/broadcom/bnxt/bnxt_tc.c       |   2 +-
 drivers/net/ethernet/chelsio/cxgb3/cxgb3_main.c    |  18 +-
 drivers/net/ethernet/intel/i40e/i40e.h             |   4 +-
 drivers/net/ethernet/intel/i40e/i40e_ethtool.c     |  25 +-
 drivers/net/ethernet/intel/i40e/i40e_main.c        |  26 +-
 drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c | 110 ++++----
 drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.h |   3 +-
 drivers/net/ethernet/marvell/octeontx2/af/cgx.c    |   3 +-
 .../net/ethernet/marvell/octeontx2/nic/otx2_tc.c   |   2 +-
 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c  |   2 +-
 drivers/net/fjes/fjes_main.c                       |   4 +-
 drivers/nfc/pn544/i2c.c                            |   2 -
 drivers/platform/x86/sony-laptop.c                 |   1 -
 drivers/scsi/isci/init.c                           |   6 +-
 .../pci/hive_isp_css_include/math_support.h        |   5 -
 drivers/usb/core/quirks.c                          |   2 +-
 drivers/video/fbdev/core/fbcon.c                   |  13 +-
 drivers/virt/acrn/ioreq.c                          |   4 +-
 fs/afs/server.c                                    |   3 +-
 fs/btrfs/misc.h                                    |   2 -
 fs/ext2/balloc.c                                   |   2 -
 fs/ext4/ext4.h                                     |   2 -
 fs/hugetlbfs/inode.c                               |  10 +-
 fs/smb/server/transport_rdma.c                     |  18 +-
 fs/ufs/util.h                                      |   6 -
 include/crypto/if_alg.h                            |   2 +-
 include/linux/minmax.h                             | 122 +++++++--
 include/linux/mm.h                                 |  54 ++++
 include/linux/pageblock-flags.h                    |   2 +-
 include/linux/swap.h                               |  10 +
 include/net/bluetooth/hci_core.h                   |  21 ++
 kernel/bpf/verifier.c                              |   4 +
 kernel/futex/requeue.c                             |   6 +-
 kernel/trace/preemptirq_delay_test.c               |   2 -
 kernel/trace/trace_dynevent.c                      |   4 +
 lib/btree.c                                        |   1 -
 lib/decompress_unlzma.c                            |   2 +
 lib/logic_pio.c                                    |   3 -
 mm/gup.c                                           |  28 +-
 mm/kmsan/core.c                                    |  10 +-
 mm/kmsan/kmsan_test.c                              |  16 ++
 mm/migrate_device.c                                |  42 ++-
 mm/mlock.c                                         |   2 +-
 mm/swap.c                                          |   4 +-
 mm/zsmalloc.c                                      |   1 -
 net/bluetooth/hci_event.c                          |  26 +-
 net/bluetooth/hci_sync.c                           |   7 +
 net/ipv4/nexthop.c                                 |   7 +
 net/ipv4/proc.c                                    |   2 +-
 net/ipv6/proc.c                                    |   2 +-
 net/netfilter/nf_nat_core.c                        |   6 +-
 net/tipc/core.h                                    |   2 +-
 net/tipc/link.c                                    |  10 +-
 sound/usb/mixer_quirks.c                           | 295 +++++++++++++++++++--
 sound/usb/quirks.c                                 |  24 +-
 sound/usb/usbaudio.h                               |   4 +
 .../selftests/bpf/progs/get_branch_snapshot.c      |   4 +-
 tools/testing/selftests/net/fib_nexthops.sh        |  12 +-
 tools/testing/selftests/seccomp/seccomp_bpf.c      |   2 +
 tools/testing/selftests/vm/mremap_test.c           |   2 +
 97 files changed, 950 insertions(+), 331 deletions(-)

[PATCH 6.1 01/73] ALSA: usb-audio: Fix block comments in mixer_quirks

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>

[ Upstream commit 231225d8a20f8668b4fd6601d54a2fac0e0ab7a5 ]

Address a couple of comment formatting issues indicated by
checkpatch.pl:

  WARNING: Block comments use a trailing */ on a separate line

Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://patch.msgid.link/20250526-dualsense-alsa-jack-v1-4-1a821463b632@collabora.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 sound/usb/mixer_quirks.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/sound/usb/mixer_quirks.c b/sound/usb/mixer_quirks.c
index 68c82e344d3ba..4ce470e291b25 100644
--- a/sound/usb/mixer_quirks.c
+++ b/sound/usb/mixer_quirks.c
@@ -76,7 +76,8 @@ static int snd_create_std_mono_ctl_offset(struct usb_mixer_interface *mixer,
 	cval->idx_off = idx_off;
 
 	/* get_min_max() is called only for integer volumes later,
-	 * so provide a short-cut for booleans */
+	 * so provide a short-cut for booleans
+	 */
 	cval->min = 0;
 	cval->max = 1;
 	cval->res = 0;
@@ -3546,7 +3547,8 @@ static void snd_dragonfly_quirk_db_scale(struct usb_mixer_interface *mixer,
 					 struct snd_kcontrol *kctl)
 {
 	/* Approximation using 10 ranges based on output measurement on hw v1.2.
-	 * This seems close to the cubic mapping e.g. alsamixer uses. */
+	 * This seems close to the cubic mapping e.g. alsamixer uses.
+	 */
 	static const DECLARE_TLV_DB_RANGE(scale,
 		 0,  1, TLV_DB_MINMAX_ITEM(-5300, -4970),
 		 2,  5, TLV_DB_MINMAX_ITEM(-4710, -4160),
-- 
2.51.0

[PATCH 6.1 02/73] ALSA: usb-audio: Drop unnecessary parentheses in mixer_quirks

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>

[ Upstream commit c0495cef8b43ad61efbd4019e3573742e0e63c67 ]

Fix multiple 'CHECK: Unnecessary parentheses around ...' reports from
checkpatch.pl.

Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://patch.msgid.link/20250526-dualsense-alsa-jack-v1-5-1a821463b632@collabora.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 sound/usb/mixer_quirks.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/sound/usb/mixer_quirks.c b/sound/usb/mixer_quirks.c
index 4ce470e291b25..a1ab517e26b36 100644
--- a/sound/usb/mixer_quirks.c
+++ b/sound/usb/mixer_quirks.c
@@ -376,10 +376,10 @@ static int snd_audigy2nx_controls_create(struct usb_mixer_interface *mixer)
 		struct snd_kcontrol_new knew;
 
 		/* USB X-Fi S51 doesn't have a CMSS LED */
-		if ((mixer->chip->usb_id == USB_ID(0x041e, 0x3042)) && i == 0)
+		if (mixer->chip->usb_id == USB_ID(0x041e, 0x3042) && i == 0)
 			continue;
 		/* USB X-Fi S51 Pro doesn't have one either */
-		if ((mixer->chip->usb_id == USB_ID(0x041e, 0x30df)) && i == 0)
+		if (mixer->chip->usb_id == USB_ID(0x041e, 0x30df) && i == 0)
 			continue;
 		if (i > 1 && /* Live24ext has 2 LEDs only */
 			(mixer->chip->usb_id == USB_ID(0x041e, 0x3040) ||
@@ -3272,7 +3272,7 @@ static int snd_djm_controls_update(struct usb_mixer_interface *mixer,
 	int err;
 	const struct snd_djm_device *device = &snd_djm_devices[device_idx];
 
-	if ((group >= device->ncontrols) || value >= device->controls[group].noptions)
+	if (group >= device->ncontrols || value >= device->controls[group].noptions)
 		return -EINVAL;
 
 	err = snd_usb_lock_shutdown(mixer->chip);
-- 
2.51.0

[PATCH 6.1 03/73] ALSA: usb-audio: Avoid multiple assignments in mixer_quirks

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>

[ Upstream commit 03ddd3bdb94df3edb1f2408b57cfb00b3d92a208 ]

Handle report from checkpatch.pl:

  CHECK: multiple assignments should be avoided

Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://patch.msgid.link/20250526-dualsense-alsa-jack-v1-6-1a821463b632@collabora.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 sound/usb/mixer_quirks.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/sound/usb/mixer_quirks.c b/sound/usb/mixer_quirks.c
index a1ab517e26b36..f91dbc9255f12 100644
--- a/sound/usb/mixer_quirks.c
+++ b/sound/usb/mixer_quirks.c
@@ -1734,7 +1734,8 @@ static int snd_microii_spdif_default_put(struct snd_kcontrol *kcontrol,
 	unsigned int pval, pval_old;
 	int err;
 
-	pval = pval_old = kcontrol->private_value;
+	pval = kcontrol->private_value;
+	pval_old = pval;
 	pval &= 0xfffff0f0;
 	pval |= (ucontrol->value.iec958.status[1] & 0x0f) << 8;
 	pval |= (ucontrol->value.iec958.status[0] & 0x0f);
-- 
2.51.0

[PATCH 6.1 04/73] ALSA: usb-audio: Simplify NULL comparison in mixer_quirks

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>

[ Upstream commit f2d6d660e8fd5f4467e80743f82119201e67fa9c ]

Handle report from checkpatch.pl:

  CHECK: Comparison to NULL could be written "t->name"

Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://patch.msgid.link/20250526-dualsense-alsa-jack-v1-7-1a821463b632@collabora.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 sound/usb/mixer_quirks.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/usb/mixer_quirks.c b/sound/usb/mixer_quirks.c
index f91dbc9255f12..9a5e8c47ce0d2 100644
--- a/sound/usb/mixer_quirks.c
+++ b/sound/usb/mixer_quirks.c
@@ -126,7 +126,7 @@ static int snd_create_std_mono_table(struct usb_mixer_interface *mixer,
 {
 	int err;
 
-	while (t->name != NULL) {
+	while (t->name) {
 		err = snd_create_std_mono_ctl(mixer, t->unitid, t->control,
 				t->cmask, t->val_type, t->name, t->tlv_callback);
 		if (err < 0)
-- 
2.51.0

[PATCH 6.1 05/73] ALSA: usb-audio: Remove unneeded wmb() in mixer_quirks

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>

[ Upstream commit 9cea7425595697802e8d55a322a251999554b8b1 ]

Adding a memory barrier before wake_up() in
snd_usb_soundblaster_remote_complete() is supposed to ensure the write
to mixer->rc_code is visible in wait_event_interruptible() from
snd_usb_sbrc_hwdep_read().

However, this is not really necessary, since wake_up() is just a wrapper
over __wake_up() which already executes a full memory barrier before
accessing the state of the task to be waken up.

Drop the redundant call to wmb() and implicitly fix the checkpatch
complaint:

  WARNING: memory barrier without comment

Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://patch.msgid.link/20250526-dualsense-alsa-jack-v1-8-1a821463b632@collabora.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 sound/usb/mixer_quirks.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/sound/usb/mixer_quirks.c b/sound/usb/mixer_quirks.c
index 9a5e8c47ce0d2..e5252167d6a40 100644
--- a/sound/usb/mixer_quirks.c
+++ b/sound/usb/mixer_quirks.c
@@ -208,7 +208,6 @@ static void snd_usb_soundblaster_remote_complete(struct urb *urb)
 	if (code == rc->mute_code)
 		snd_usb_mixer_notify_id(mixer, rc->mute_mixer_id);
 	mixer->rc_code = code;
-	wmb();
 	wake_up(&mixer->rc_waitq);
 }
 
-- 
2.51.0

[PATCH 6.1 06/73] ALSA: usb-audio: Add mixer quirk for Sony DualSense PS5

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>

[ Upstream commit 79d561c4ec0497669f19a9550cfb74812f60938b ]

The Sony DualSense wireless controller (PS5) features an internal mono
speaker, but it also provides a 3.5mm jack socket for headphone output
and headset microphone input.

Since this is a UAC1 device, it doesn't advertise any jack detection
capability.  However, the controller is able to report HP & MIC insert
events via HID, i.e. through a dedicated input device managed by the
hid-playstation driver.

Add a quirk to create the jack controls for headphone and headset mic,
respectively, and setup an input handler for each of them in order to
intercept the related hotplug events.

Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://patch.msgid.link/20250526-dualsense-alsa-jack-v1-9-1a821463b632@collabora.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 sound/usb/mixer_quirks.c | 263 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 263 insertions(+)

diff --git a/sound/usb/mixer_quirks.c b/sound/usb/mixer_quirks.c
index e5252167d6a40..95fa1c31ae550 100644
--- a/sound/usb/mixer_quirks.c
+++ b/sound/usb/mixer_quirks.c
@@ -16,6 +16,7 @@
 
 #include <linux/hid.h>
 #include <linux/init.h>
+#include <linux/input.h>
 #include <linux/math64.h>
 #include <linux/slab.h>
 #include <linux/usb.h>
@@ -527,6 +528,263 @@ static int snd_emu0204_controls_create(struct usb_mixer_interface *mixer)
 					  &snd_emu0204_control, NULL);
 }
 
+/*
+ * Sony DualSense controller (PS5) jack detection
+ *
+ * Since this is an UAC 1 device, it doesn't support jack detection.
+ * However, the controller hid-playstation driver reports HP & MIC
+ * insert events through a dedicated input device.
+ */
+
+#define SND_DUALSENSE_JACK_OUT_TERM_ID 3
+#define SND_DUALSENSE_JACK_IN_TERM_ID 4
+
+struct dualsense_mixer_elem_info {
+	struct usb_mixer_elem_info info;
+	struct input_handler ih;
+	struct input_device_id id_table[2];
+	bool connected;
+};
+
+static void snd_dualsense_ih_event(struct input_handle *handle,
+				   unsigned int type, unsigned int code,
+				   int value)
+{
+	struct dualsense_mixer_elem_info *mei;
+	struct usb_mixer_elem_list *me;
+
+	if (type != EV_SW)
+		return;
+
+	mei = container_of(handle->handler, struct dualsense_mixer_elem_info, ih);
+	me = &mei->info.head;
+
+	if ((me->id == SND_DUALSENSE_JACK_OUT_TERM_ID && code == SW_HEADPHONE_INSERT) ||
+	    (me->id == SND_DUALSENSE_JACK_IN_TERM_ID && code == SW_MICROPHONE_INSERT)) {
+		mei->connected = !!value;
+		snd_ctl_notify(me->mixer->chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
+			       &me->kctl->id);
+	}
+}
+
+static bool snd_dualsense_ih_match(struct input_handler *handler,
+				   struct input_dev *dev)
+{
+	struct dualsense_mixer_elem_info *mei;
+	struct usb_device *snd_dev;
+	char *input_dev_path, *usb_dev_path;
+	size_t usb_dev_path_len;
+	bool match = false;
+
+	mei = container_of(handler, struct dualsense_mixer_elem_info, ih);
+	snd_dev = mei->info.head.mixer->chip->dev;
+
+	input_dev_path = kobject_get_path(&dev->dev.kobj, GFP_KERNEL);
+	if (!input_dev_path) {
+		dev_warn(&snd_dev->dev, "Failed to get input dev path\n");
+		return false;
+	}
+
+	usb_dev_path = kobject_get_path(&snd_dev->dev.kobj, GFP_KERNEL);
+	if (!usb_dev_path) {
+		dev_warn(&snd_dev->dev, "Failed to get USB dev path\n");
+		goto free_paths;
+	}
+
+	/*
+	 * Ensure the VID:PID matched input device supposedly owned by the
+	 * hid-playstation driver belongs to the actual hardware handled by
+	 * the current USB audio device, which implies input_dev_path being
+	 * a subpath of usb_dev_path.
+	 *
+	 * This verification is necessary when there is more than one identical
+	 * controller attached to the host system.
+	 */
+	usb_dev_path_len = strlen(usb_dev_path);
+	if (usb_dev_path_len >= strlen(input_dev_path))
+		goto free_paths;
+
+	usb_dev_path[usb_dev_path_len] = '/';
+	match = !memcmp(input_dev_path, usb_dev_path, usb_dev_path_len + 1);
+
+free_paths:
+	kfree(input_dev_path);
+	kfree(usb_dev_path);
+
+	return match;
+}
+
+static int snd_dualsense_ih_connect(struct input_handler *handler,
+				    struct input_dev *dev,
+				    const struct input_device_id *id)
+{
+	struct input_handle *handle;
+	int err;
+
+	handle = kzalloc(sizeof(*handle), GFP_KERNEL);
+	if (!handle)
+		return -ENOMEM;
+
+	handle->dev = dev;
+	handle->handler = handler;
+	handle->name = handler->name;
+
+	err = input_register_handle(handle);
+	if (err)
+		goto err_free;
+
+	err = input_open_device(handle);
+	if (err)
+		goto err_unregister;
+
+	return 0;
+
+err_unregister:
+	input_unregister_handle(handle);
+err_free:
+	kfree(handle);
+	return err;
+}
+
+static void snd_dualsense_ih_disconnect(struct input_handle *handle)
+{
+	input_close_device(handle);
+	input_unregister_handle(handle);
+	kfree(handle);
+}
+
+static void snd_dualsense_ih_start(struct input_handle *handle)
+{
+	struct dualsense_mixer_elem_info *mei;
+	struct usb_mixer_elem_list *me;
+	int status = -1;
+
+	mei = container_of(handle->handler, struct dualsense_mixer_elem_info, ih);
+	me = &mei->info.head;
+
+	if (me->id == SND_DUALSENSE_JACK_OUT_TERM_ID &&
+	    test_bit(SW_HEADPHONE_INSERT, handle->dev->swbit))
+		status = test_bit(SW_HEADPHONE_INSERT, handle->dev->sw);
+	else if (me->id == SND_DUALSENSE_JACK_IN_TERM_ID &&
+		 test_bit(SW_MICROPHONE_INSERT, handle->dev->swbit))
+		status = test_bit(SW_MICROPHONE_INSERT, handle->dev->sw);
+
+	if (status >= 0) {
+		mei->connected = !!status;
+		snd_ctl_notify(me->mixer->chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
+			       &me->kctl->id);
+	}
+}
+
+static int snd_dualsense_jack_get(struct snd_kcontrol *kctl,
+				  struct snd_ctl_elem_value *ucontrol)
+{
+	struct dualsense_mixer_elem_info *mei = snd_kcontrol_chip(kctl);
+
+	ucontrol->value.integer.value[0] = mei->connected;
+
+	return 0;
+}
+
+static const struct snd_kcontrol_new snd_dualsense_jack_control = {
+	.iface = SNDRV_CTL_ELEM_IFACE_CARD,
+	.access = SNDRV_CTL_ELEM_ACCESS_READ,
+	.info = snd_ctl_boolean_mono_info,
+	.get = snd_dualsense_jack_get,
+};
+
+static int snd_dualsense_resume_jack(struct usb_mixer_elem_list *list)
+{
+	snd_ctl_notify(list->mixer->chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
+		       &list->kctl->id);
+	return 0;
+}
+
+static void snd_dualsense_mixer_elem_free(struct snd_kcontrol *kctl)
+{
+	struct dualsense_mixer_elem_info *mei = snd_kcontrol_chip(kctl);
+
+	if (mei->ih.event)
+		input_unregister_handler(&mei->ih);
+
+	snd_usb_mixer_elem_free(kctl);
+}
+
+static int snd_dualsense_jack_create(struct usb_mixer_interface *mixer,
+				     const char *name, bool is_output)
+{
+	struct dualsense_mixer_elem_info *mei;
+	struct input_device_id *idev_id;
+	struct snd_kcontrol *kctl;
+	int err;
+
+	mei = kzalloc(sizeof(*mei), GFP_KERNEL);
+	if (!mei)
+		return -ENOMEM;
+
+	snd_usb_mixer_elem_init_std(&mei->info.head, mixer,
+				    is_output ? SND_DUALSENSE_JACK_OUT_TERM_ID :
+						SND_DUALSENSE_JACK_IN_TERM_ID);
+
+	mei->info.head.resume = snd_dualsense_resume_jack;
+	mei->info.val_type = USB_MIXER_BOOLEAN;
+	mei->info.channels = 1;
+	mei->info.min = 0;
+	mei->info.max = 1;
+
+	kctl = snd_ctl_new1(&snd_dualsense_jack_control, mei);
+	if (!kctl) {
+		kfree(mei);
+		return -ENOMEM;
+	}
+
+	strscpy(kctl->id.name, name, sizeof(kctl->id.name));
+	kctl->private_free = snd_dualsense_mixer_elem_free;
+
+	err = snd_usb_mixer_add_control(&mei->info.head, kctl);
+	if (err)
+		return err;
+
+	idev_id = &mei->id_table[0];
+	idev_id->flags = INPUT_DEVICE_ID_MATCH_VENDOR | INPUT_DEVICE_ID_MATCH_PRODUCT |
+			 INPUT_DEVICE_ID_MATCH_EVBIT | INPUT_DEVICE_ID_MATCH_SWBIT;
+	idev_id->vendor = USB_ID_VENDOR(mixer->chip->usb_id);
+	idev_id->product = USB_ID_PRODUCT(mixer->chip->usb_id);
+	idev_id->evbit[BIT_WORD(EV_SW)] = BIT_MASK(EV_SW);
+	if (is_output)
+		idev_id->swbit[BIT_WORD(SW_HEADPHONE_INSERT)] = BIT_MASK(SW_HEADPHONE_INSERT);
+	else
+		idev_id->swbit[BIT_WORD(SW_MICROPHONE_INSERT)] = BIT_MASK(SW_MICROPHONE_INSERT);
+
+	mei->ih.event = snd_dualsense_ih_event;
+	mei->ih.match = snd_dualsense_ih_match;
+	mei->ih.connect = snd_dualsense_ih_connect,
+	mei->ih.disconnect = snd_dualsense_ih_disconnect,
+	mei->ih.start = snd_dualsense_ih_start,
+	mei->ih.name = name;
+	mei->ih.id_table = mei->id_table;
+
+	err = input_register_handler(&mei->ih);
+	if (err) {
+		dev_warn(&mixer->chip->dev->dev,
+			 "Could not register input handler: %d\n", err);
+		mei->ih.event = NULL;
+	}
+
+	return 0;
+}
+
+static int snd_dualsense_controls_create(struct usb_mixer_interface *mixer)
+{
+	int err;
+
+	err = snd_dualsense_jack_create(mixer, "Headphone Jack", true);
+	if (err < 0)
+		return err;
+
+	return snd_dualsense_jack_create(mixer, "Headset Mic Jack", false);
+}
+
 /* ASUS Xonar U1 / U3 controls */
 
 static int snd_xonar_u1_switch_get(struct snd_kcontrol *kcontrol,
@@ -3390,6 +3648,11 @@ int snd_usb_mixer_apply_create_quirk(struct usb_mixer_interface *mixer)
 		err = snd_emu0204_controls_create(mixer);
 		break;
 
+	case USB_ID(0x054c, 0x0ce6): /* Sony DualSense controller (PS5) */
+	case USB_ID(0x054c, 0x0df2): /* Sony DualSense Edge controller (PS5) */
+		err = snd_dualsense_controls_create(mixer);
+		break;
+
 	case USB_ID(0x0763, 0x2030): /* M-Audio Fast Track C400 */
 	case USB_ID(0x0763, 0x2031): /* M-Audio Fast Track C400 */
 		err = snd_c400_create_mixer(mixer);
-- 
2.51.0

[PATCH 6.1 07/73] HID: multitouch: Get the contact ID from HID_DG_TRANSDUCER_INDEX fields in case of Apple Touch Bar

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Kerem Karabay <kekrby@gmail.com>

[ Upstream commit f41d736acc039d86512951f4e874b0f5e666babf ]

In Apple Touch Bar, the contact ID is contained in fields with the
HID_DG_TRANSDUCER_INDEX usage rather than HID_DG_CONTACTID, thus differing
from the HID spec. Add a quirk for the same.

Acked-by: Benjamin Tissoires <bentiss@kernel.org>
Signed-off-by: Kerem Karabay <kekrby@gmail.com>
Co-developed-by: Aditya Garg <gargaditya08@live.com>
Signed-off-by: Aditya Garg <gargaditya08@live.com>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/hid/hid-multitouch.c | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c
index a85581cd511fd..35426e702b301 100644
--- a/drivers/hid/hid-multitouch.c
+++ b/drivers/hid/hid-multitouch.c
@@ -72,6 +72,7 @@ MODULE_LICENSE("GPL");
 #define MT_QUIRK_FORCE_MULTI_INPUT	BIT(20)
 #define MT_QUIRK_DISABLE_WAKEUP		BIT(21)
 #define MT_QUIRK_ORIENTATION_INVERT	BIT(22)
+#define MT_QUIRK_APPLE_TOUCHBAR		BIT(23)
 
 #define MT_INPUTMODE_TOUCHSCREEN	0x02
 #define MT_INPUTMODE_TOUCHPAD		0x03
@@ -612,6 +613,7 @@ static struct mt_application *mt_find_application(struct mt_device *td,
 static struct mt_report_data *mt_allocate_report_data(struct mt_device *td,
 						      struct hid_report *report)
 {
+	struct mt_class *cls = &td->mtclass;
 	struct mt_report_data *rdata;
 	struct hid_field *field;
 	int r, n;
@@ -636,7 +638,11 @@ static struct mt_report_data *mt_allocate_report_data(struct mt_device *td,
 
 		if (field->logical == HID_DG_FINGER || td->hdev->group != HID_GROUP_MULTITOUCH_WIN_8) {
 			for (n = 0; n < field->report_count; n++) {
-				if (field->usage[n].hid == HID_DG_CONTACTID) {
+				unsigned int hid = field->usage[n].hid;
+
+				if (hid == HID_DG_CONTACTID ||
+				   (cls->quirks & MT_QUIRK_APPLE_TOUCHBAR &&
+				   hid == HID_DG_TRANSDUCER_INDEX)) {
 					rdata->is_mt_collection = true;
 					break;
 				}
@@ -814,6 +820,14 @@ static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi,
 						     EV_KEY, BTN_TOUCH);
 			MT_STORE_FIELD(tip_state);
 			return 1;
+		case HID_DG_TRANSDUCER_INDEX:
+			/*
+			 * Contact ID in case of Apple Touch Bars is contained
+			 * in fields with HID_DG_TRANSDUCER_INDEX usage.
+			 */
+			if (!(cls->quirks & MT_QUIRK_APPLE_TOUCHBAR))
+				return 0;
+			fallthrough;
 		case HID_DG_CONTACTID:
 			MT_STORE_FIELD(contactid);
 			app->touches_by_report++;
-- 
2.51.0

[PATCH 6.1 08/73] HID: multitouch: support getting the tip state from HID_DG_TOUCH fields in Apple Touch Bar

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Kerem Karabay <kekrby@gmail.com>

[ Upstream commit e0976a61a543b5e03bc0d08030a0ea036ee3751d ]

In Apple Touch Bar, the tip state is contained in fields with the
HID_DG_TOUCH usage. This feature is gated by a quirk in order to
prevent breaking other devices, see commit c2ef8f21ea8f
("HID: multitouch: add support for trackpads").

Acked-by: Benjamin Tissoires <bentiss@kernel.org>
Signed-off-by: Kerem Karabay <kekrby@gmail.com>
Co-developed-by: Aditya Garg <gargaditya08@live.com>
Signed-off-by: Aditya Garg <gargaditya08@live.com>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/hid/hid-multitouch.c | 15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c
index 35426e702b301..d0b2e866dadaf 100644
--- a/drivers/hid/hid-multitouch.c
+++ b/drivers/hid/hid-multitouch.c
@@ -814,6 +814,17 @@ static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi,
 
 			MT_STORE_FIELD(confidence_state);
 			return 1;
+		case HID_DG_TOUCH:
+			/*
+			 * Legacy devices use TIPSWITCH and not TOUCH.
+			 * One special case here is of the Apple Touch Bars.
+			 * In these devices, the tip state is contained in
+			 * fields with the HID_DG_TOUCH usage.
+			 * Let's just ignore this field for other devices.
+			 */
+			if (!(cls->quirks & MT_QUIRK_APPLE_TOUCHBAR))
+				return -1;
+			fallthrough;
 		case HID_DG_TIPSWITCH:
 			if (field->application != HID_GD_SYSTEM_MULTIAXIS)
 				input_set_capability(hi->input,
@@ -884,10 +895,6 @@ static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi,
 		case HID_DG_CONTACTMAX:
 			/* contact max are global to the report */
 			return -1;
-		case HID_DG_TOUCH:
-			/* Legacy devices use TIPSWITCH and not TOUCH.
-			 * Let's just ignore this field. */
-			return -1;
 		}
 		/* let hid-input decide for the others */
 		return 0;
-- 
2.51.0

[PATCH 6.1 09/73] HID: multitouch: take cls->maxcontacts into account for Apple Touch Bar even without a HID_DG_CONTACTMAX field

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Kerem Karabay <kekrby@gmail.com>

[ Upstream commit 7dfe48bdc9d38db46283f2e0281bc1626277b8bf ]

In Apple Touch Bar, the HID_DG_CONTACTMAX is not present, but the maximum
contact count is still greater than the default. Add quirks for the same.

Acked-by: Benjamin Tissoires <bentiss@kernel.org>
Signed-off-by: Kerem Karabay <kekrby@gmail.com>
Co-developed-by: Aditya Garg <gargaditya08@live.com>
Signed-off-by: Aditya Garg <gargaditya08@live.com>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/hid/hid-multitouch.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c
index d0b2e866dadaf..8e9f71e69dd8c 100644
--- a/drivers/hid/hid-multitouch.c
+++ b/drivers/hid/hid-multitouch.c
@@ -1322,6 +1322,13 @@ static int mt_touch_input_configured(struct hid_device *hdev,
 	struct input_dev *input = hi->input;
 	int ret;
 
+	/*
+	 * HID_DG_CONTACTMAX field is not present on Apple Touch Bars,
+	 * but the maximum contact count is greater than the default.
+	 */
+	if (cls->quirks & MT_QUIRK_APPLE_TOUCHBAR && cls->maxcontacts)
+		td->maxcontacts = cls->maxcontacts;
+
 	if (!td->maxcontacts)
 		td->maxcontacts = MT_DEFAULT_MAXCONTACT;
 
-- 
2.51.0

[PATCH 6.1 10/73] HID: multitouch: specify that Apple Touch Bar is direct

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Kerem Karabay <kekrby@gmail.com>

[ Upstream commit 45ca23c5ee8b2b3074377fecc92fa72aa595f7c9 ]

Currently the driver determines the device type based on the
application, but this value is not reliable on Apple Touch Bar, where
the application is HID_DG_TOUCHPAD even though this device is direct,
so add a quirk for the same.

Acked-by: Benjamin Tissoires <bentiss@kernel.org>
Signed-off-by: Kerem Karabay <kekrby@gmail.com>
Co-developed-by: Aditya Garg <gargaditya08@live.com>
Signed-off-by: Aditya Garg <gargaditya08@live.com>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/hid/hid-multitouch.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c
index 8e9f71e69dd8c..d8fee341c096e 100644
--- a/drivers/hid/hid-multitouch.c
+++ b/drivers/hid/hid-multitouch.c
@@ -1336,6 +1336,13 @@ static int mt_touch_input_configured(struct hid_device *hdev,
 	if (td->serial_maybe)
 		mt_post_parse_default_settings(td, app);
 
+	/*
+	 * The application for Apple Touch Bars is HID_DG_TOUCHPAD,
+	 * but these devices are direct.
+	 */
+	if (cls->quirks & MT_QUIRK_APPLE_TOUCHBAR)
+		app->mt_flags |= INPUT_MT_DIRECT;
+
 	if (cls->is_indirect)
 		app->mt_flags |= INPUT_MT_POINTER;
 
-- 
2.51.0

[PATCH 6.1 11/73] ALSA: usb-audio: Convert comma to semicolon

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Chen Ni <nichen@iscas.ac.cn>

[ Upstream commit 9ca30a1b007d5fefb5752428f852a2d8d7219c1c ]

Replace comma between expressions with semicolons.

Using a ',' in place of a ';' can have unintended side effects.
Although that is not the case here, it is seems best to use ';'
unless ',' is intended.

Found by inspection.
No functional change intended.
Compile tested only.

Fixes: 79d561c4ec04 ("ALSA: usb-audio: Add mixer quirk for Sony DualSense PS5")
Signed-off-by: Chen Ni <nichen@iscas.ac.cn>
Reviewed-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
Link: https://patch.msgid.link/20250612060228.1518028-1-nichen@iscas.ac.cn
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 sound/usb/mixer_quirks.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/sound/usb/mixer_quirks.c b/sound/usb/mixer_quirks.c
index 95fa1c31ae550..f1b663a05f295 100644
--- a/sound/usb/mixer_quirks.c
+++ b/sound/usb/mixer_quirks.c
@@ -758,9 +758,9 @@ static int snd_dualsense_jack_create(struct usb_mixer_interface *mixer,
 
 	mei->ih.event = snd_dualsense_ih_event;
 	mei->ih.match = snd_dualsense_ih_match;
-	mei->ih.connect = snd_dualsense_ih_connect,
-	mei->ih.disconnect = snd_dualsense_ih_disconnect,
-	mei->ih.start = snd_dualsense_ih_start,
+	mei->ih.connect = snd_dualsense_ih_connect;
+	mei->ih.disconnect = snd_dualsense_ih_disconnect;
+	mei->ih.start = snd_dualsense_ih_start;
 	mei->ih.name = name;
 	mei->ih.id_table = mei->id_table;
 
-- 
2.51.0

[PATCH 6.1 12/73] ALSA: usb-audio: Fix build with CONFIG_INPUT=n

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Takashi Iwai <tiwai@suse.de>

[ Upstream commit d0630a0b80c08530857146e3bf183a7d6b743847 ]

The recent addition of DualSense mixer quirk relies on the input
device handle, and the build can fail if CONFIG_INPUT isn't set.
Put (rather ugly) workarounds to wrap with IS_REACHABLE() for avoiding
the build error.

Fixes: 79d561c4ec04 ("ALSA: usb-audio: Add mixer quirk for Sony DualSense PS5")
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202506130733.gnPKw2l3-lkp@intel.com/
Reviewed-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
Link: https://patch.msgid.link/20250613081543.7404-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 sound/usb/mixer_quirks.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/sound/usb/mixer_quirks.c b/sound/usb/mixer_quirks.c
index f1b663a05f295..8c0b8383abe1e 100644
--- a/sound/usb/mixer_quirks.c
+++ b/sound/usb/mixer_quirks.c
@@ -528,6 +528,7 @@ static int snd_emu0204_controls_create(struct usb_mixer_interface *mixer)
 					  &snd_emu0204_control, NULL);
 }
 
+#if IS_REACHABLE(CONFIG_INPUT)
 /*
  * Sony DualSense controller (PS5) jack detection
  *
@@ -784,6 +785,7 @@ static int snd_dualsense_controls_create(struct usb_mixer_interface *mixer)
 
 	return snd_dualsense_jack_create(mixer, "Headset Mic Jack", false);
 }
+#endif /* IS_REACHABLE(CONFIG_INPUT) */
 
 /* ASUS Xonar U1 / U3 controls */
 
@@ -3648,10 +3650,12 @@ int snd_usb_mixer_apply_create_quirk(struct usb_mixer_interface *mixer)
 		err = snd_emu0204_controls_create(mixer);
 		break;
 
+#if IS_REACHABLE(CONFIG_INPUT)
 	case USB_ID(0x054c, 0x0ce6): /* Sony DualSense controller (PS5) */
 	case USB_ID(0x054c, 0x0df2): /* Sony DualSense Edge controller (PS5) */
 		err = snd_dualsense_controls_create(mixer);
 		break;
+#endif /* IS_REACHABLE(CONFIG_INPUT) */
 
 	case USB_ID(0x0763, 0x2030): /* M-Audio Fast Track C400 */
 	case USB_ID(0x0763, 0x2031): /* M-Audio Fast Track C400 */
-- 
2.51.0

[PATCH 6.1 13/73] usb: core: Add 0x prefix to quirks debug output

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Jiayi Li <lijiayi@kylinos.cn>

[ Upstream commit 47c428fce0b41b15ab321d8ede871f780ccd038f ]

Use "0x%x" format for quirks debug print to clarify it's a hexadecimal
value. Improves readability and consistency with other hex outputs.

Signed-off-by: Jiayi Li <lijiayi@kylinos.cn>
Link: https://lore.kernel.org/r/20250603071045.3243699-1-lijiayi@kylinos.cn
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/usb/core/quirks.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c
index bfd97cad8aa4d..c0fd8ab3fe8fc 100644
--- a/drivers/usb/core/quirks.c
+++ b/drivers/usb/core/quirks.c
@@ -734,7 +734,7 @@ void usb_detect_quirks(struct usb_device *udev)
 	udev->quirks ^= usb_detect_dynamic_quirks(udev);
 
 	if (udev->quirks)
-		dev_dbg(&udev->dev, "USB quirks for this device: %x\n",
+		dev_dbg(&udev->dev, "USB quirks for this device: 0x%x\n",
 			udev->quirks);
 
 #ifdef CONFIG_USB_DEFAULT_PERSIST
-- 
2.51.0

[PATCH 6.1 14/73] ALSA: usb-audio: Add DSD support for Comtrue USB Audio device

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: noble.yang <noble.yang@comtrue-inc.com>

[ Upstream commit e9df1755485dd90a89656e8a21ec4d71c909fa30 ]

The vendor Comtrue Inc. (0x2fc6) produces USB audio chipsets like
the CT7601 which are capable of Native DSD playback.

This patch adds QUIRK_FLAG_DSD_RAW for Comtrue (VID 0x2fc6), which enables
native DSD playback (DSD_U32_LE) on their USB Audio device. This has been
verified under Ubuntu 25.04 with JRiver.

Signed-off-by: noble.yang <noble.yang@comtrue-inc.com>
Link: https://patch.msgid.link/20250731110614.4070-1-noble228@gmail.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 sound/usb/quirks.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
index ac43bdf6e9ca6..d4f4466b028c8 100644
--- a/sound/usb/quirks.c
+++ b/sound/usb/quirks.c
@@ -2303,6 +2303,8 @@ static const struct usb_audio_quirk_flags_table quirk_flags_table[] = {
 		   QUIRK_FLAG_DSD_RAW),
 	VENDOR_FLG(0x2d87, /* Cayin device */
 		   QUIRK_FLAG_DSD_RAW),
+	VENDOR_FLG(0x2fc6, /* Comture-inc devices */
+		   QUIRK_FLAG_DSD_RAW),
 	VENDOR_FLG(0x3336, /* HEM devices */
 		   QUIRK_FLAG_DSD_RAW),
 	VENDOR_FLG(0x3353, /* Khadas devices */
-- 
2.51.0

[PATCH 6.1 15/73] ALSA: usb-audio: move mixer_quirks min_mute into common quirk

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Cryolitia PukNgae <cryolitia@uniontech.com>

[ Upstream commit 2c3ca8cc55a3afc7a4fa99ed8f5f5d05dd2e65b3 ]

We have found more and more devices that have the same problem, that
the mixer's minimum value is muted. Accroding to pipewire's MR[1]
and Arch Linux wiki[2], this should be a very common problem in USB
audio devices. Move the quirk into common quirk,as a preparation of
more devices' quirk's patch coming on the road[3].

1. https://gitlab.freedesktop.org/pipewire/pipewire/-/merge_requests/2514
2. https://wiki.archlinux.org/index.php?title=PipeWire&oldid=804138#No_sound_from_USB_DAC_until_30%_volume
3. On the road, in the physical sense. We have been buying ton of
   these devices for testing the problem.

Tested-by: Guoli An <anguoli@uniontech.com>
Signed-off-by: Cryolitia PukNgae <cryolitia@uniontech.com>
Link: https://patch.msgid.link/20250827-sound-quirk-min-mute-v1-1-4717aa8a4f6a@uniontech.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 sound/usb/mixer_quirks.c | 10 +++-------
 sound/usb/quirks.c       | 12 ++++++++++--
 sound/usb/usbaudio.h     |  4 ++++
 3 files changed, 17 insertions(+), 9 deletions(-)

diff --git a/sound/usb/mixer_quirks.c b/sound/usb/mixer_quirks.c
index 8c0b8383abe1e..270a0be672b7e 100644
--- a/sound/usb/mixer_quirks.c
+++ b/sound/usb/mixer_quirks.c
@@ -3899,16 +3899,12 @@ void snd_usb_mixer_fu_apply_quirk(struct usb_mixer_interface *mixer,
 		if (unitid == 7 && cval->control == UAC_FU_VOLUME)
 			snd_dragonfly_quirk_db_scale(mixer, cval, kctl);
 		break;
+	}
+
 	/* lowest playback value is muted on some devices */
-	case USB_ID(0x0572, 0x1b09): /* Conexant Systems (Rockwell), Inc. */
-	case USB_ID(0x0d8c, 0x000c): /* C-Media */
-	case USB_ID(0x0d8c, 0x0014): /* C-Media */
-	case USB_ID(0x19f7, 0x0003): /* RODE NT-USB */
-	case USB_ID(0x2d99, 0x0026): /* HECATE G2 GAMING HEADSET */
+	if (mixer->chip->quirk_flags & QUIRK_FLAG_MIXER_MIN_MUTE)
 		if (strstr(kctl->id.name, "Playback"))
 			cval->min_mute = 1;
-		break;
-	}
 
 	/* ALSA-ify some Plantronics headset control names */
 	if (USB_ID_VENDOR(mixer->chip->usb_id) == 0x047f &&
diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
index d4f4466b028c8..5b1aa5c418999 100644
--- a/sound/usb/quirks.c
+++ b/sound/usb/quirks.c
@@ -2094,6 +2094,8 @@ static const struct usb_audio_quirk_flags_table quirk_flags_table[] = {
 		   QUIRK_FLAG_SET_IFACE_FIRST),
 	DEVICE_FLG(0x0556, 0x0014, /* Phoenix Audio TMX320VC */
 		   QUIRK_FLAG_GET_SAMPLE_RATE),
+	DEVICE_FLG(0x0572, 0x1b09, /* Conexant Systems (Rockwell), Inc. */
+		   QUIRK_FLAG_MIXER_MIN_MUTE),
 	DEVICE_FLG(0x05a3, 0x9420, /* ELP HD USB Camera */
 		   QUIRK_FLAG_GET_SAMPLE_RATE),
 	DEVICE_FLG(0x05a7, 0x1020, /* Bose Companion 5 */
@@ -2140,8 +2142,10 @@ static const struct usb_audio_quirk_flags_table quirk_flags_table[] = {
 		   QUIRK_FLAG_GET_SAMPLE_RATE),
 	DEVICE_FLG(0x0c45, 0x636b, /* Microdia JP001 USB Camera */
 		   QUIRK_FLAG_GET_SAMPLE_RATE),
-	DEVICE_FLG(0x0d8c, 0x0014, /* USB Audio Device */
-		   QUIRK_FLAG_CTL_MSG_DELAY_1M),
+	DEVICE_FLG(0x0d8c, 0x000c, /* C-Media */
+		   QUIRK_FLAG_MIXER_MIN_MUTE),
+	DEVICE_FLG(0x0d8c, 0x0014, /* C-Media */
+		   QUIRK_FLAG_CTL_MSG_DELAY_1M | QUIRK_FLAG_MIXER_MIN_MUTE),
 	DEVICE_FLG(0x0ecb, 0x205c, /* JBL Quantum610 Wireless */
 		   QUIRK_FLAG_FIXED_RATE),
 	DEVICE_FLG(0x0ecb, 0x2069, /* JBL Quantum810 Wireless */
@@ -2188,6 +2192,8 @@ static const struct usb_audio_quirk_flags_table quirk_flags_table[] = {
 		   QUIRK_FLAG_ITF_USB_DSD_DAC | QUIRK_FLAG_CTL_MSG_DELAY),
 	DEVICE_FLG(0x1901, 0x0191, /* GE B850V3 CP2114 audio interface */
 		   QUIRK_FLAG_GET_SAMPLE_RATE),
+	DEVICE_FLG(0x19f7, 0x0003, /* RODE NT-USB */
+		   QUIRK_FLAG_MIXER_MIN_MUTE),
 	DEVICE_FLG(0x19f7, 0x0035, /* RODE NT-USB+ */
 		   QUIRK_FLAG_GET_SAMPLE_RATE),
 	DEVICE_FLG(0x1bcf, 0x2281, /* HD Webcam */
@@ -2248,6 +2254,8 @@ static const struct usb_audio_quirk_flags_table quirk_flags_table[] = {
 		   QUIRK_FLAG_CTL_MSG_DELAY_1M),
 	DEVICE_FLG(0x2d95, 0x8021, /* VIVO USB-C-XE710 HEADSET */
 		   QUIRK_FLAG_CTL_MSG_DELAY_1M),
+	DEVICE_FLG(0x2d99, 0x0026, /* HECATE G2 GAMING HEADSET */
+		   QUIRK_FLAG_MIXER_MIN_MUTE),
 	DEVICE_FLG(0x2fc6, 0xf0b7, /* iBasso DC07 Pro */
 		   QUIRK_FLAG_CTL_MSG_DELAY_1M),
 	DEVICE_FLG(0x30be, 0x0101, /* Schiit Hel */
diff --git a/sound/usb/usbaudio.h b/sound/usb/usbaudio.h
index 65dcb1a02e976..17db6a7f3a844 100644
--- a/sound/usb/usbaudio.h
+++ b/sound/usb/usbaudio.h
@@ -180,6 +180,9 @@ extern bool snd_usb_skip_validation;
  *  for the given endpoint.
  * QUIRK_FLAG_MIC_RES_16 and QUIRK_FLAG_MIC_RES_384
  *  Set the fixed resolution for Mic Capture Volume (mostly for webcams)
+ * QUIRK_FLAG_MIXER_MIN_MUTE
+ *  Set minimum volume control value as mute for devices where the lowest
+ *  playback value represents muted state instead of minimum audible volume
  */
 
 #define QUIRK_FLAG_GET_SAMPLE_RATE	(1U << 0)
@@ -206,5 +209,6 @@ extern bool snd_usb_skip_validation;
 #define QUIRK_FLAG_FIXED_RATE		(1U << 21)
 #define QUIRK_FLAG_MIC_RES_16		(1U << 22)
 #define QUIRK_FLAG_MIC_RES_384		(1U << 23)
+#define QUIRK_FLAG_MIXER_MIN_MUTE	(1U << 24)
 
 #endif /* __USBAUDIO_H */
-- 
2.51.0

[PATCH 6.1 16/73] ALSA: usb-audio: Add mute TLV for playback volumes on more devices

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: qaqland <anguoli@uniontech.com>

[ Upstream commit 2cbe4ac193ed7172cfd825c0cc46ce4a41be4ba1 ]

Applying the quirk of that, the lowest Playback mixer volume setting
mutes the audio output, on more devices.

Suggested-by: Cryolitia PukNgae <cryolitia@uniontech.com>
Signed-off-by: qaqland <anguoli@uniontech.com>
Link: https://patch.msgid.link/20250829-sound_quirk-v1-1-745529b44440@uniontech.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 sound/usb/quirks.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
index 5b1aa5c418999..2a862785fd939 100644
--- a/sound/usb/quirks.c
+++ b/sound/usb/quirks.c
@@ -2094,6 +2094,8 @@ static const struct usb_audio_quirk_flags_table quirk_flags_table[] = {
 		   QUIRK_FLAG_SET_IFACE_FIRST),
 	DEVICE_FLG(0x0556, 0x0014, /* Phoenix Audio TMX320VC */
 		   QUIRK_FLAG_GET_SAMPLE_RATE),
+	DEVICE_FLG(0x0572, 0x1b08, /* Conexant Systems (Rockwell), Inc. */
+		   QUIRK_FLAG_MIXER_MIN_MUTE),
 	DEVICE_FLG(0x0572, 0x1b09, /* Conexant Systems (Rockwell), Inc. */
 		   QUIRK_FLAG_MIXER_MIN_MUTE),
 	DEVICE_FLG(0x05a3, 0x9420, /* ELP HD USB Camera */
@@ -2138,6 +2140,8 @@ static const struct usb_audio_quirk_flags_table quirk_flags_table[] = {
 		   QUIRK_FLAG_CTL_MSG_DELAY_1M),
 	DEVICE_FLG(0x0b0e, 0x0349, /* Jabra 550a */
 		   QUIRK_FLAG_CTL_MSG_DELAY_1M),
+	DEVICE_FLG(0x0bda, 0x498a, /* Realtek Semiconductor Corp. */
+		   QUIRK_FLAG_MIXER_MIN_MUTE),
 	DEVICE_FLG(0x0c45, 0x6340, /* Sonix HD USB Camera */
 		   QUIRK_FLAG_GET_SAMPLE_RATE),
 	DEVICE_FLG(0x0c45, 0x636b, /* Microdia JP001 USB Camera */
@@ -2154,6 +2158,8 @@ static const struct usb_audio_quirk_flags_table quirk_flags_table[] = {
 		   QUIRK_FLAG_SHARE_MEDIA_DEVICE | QUIRK_FLAG_ALIGN_TRANSFER),
 	DEVICE_FLG(0x1101, 0x0003, /* Audioengine D1 */
 		   QUIRK_FLAG_GET_SAMPLE_RATE),
+	DEVICE_FLG(0x12d1, 0x3a07, /* Huawei Technologies Co., Ltd. */
+		   QUIRK_FLAG_MIXER_MIN_MUTE),
 	DEVICE_FLG(0x1224, 0x2a25, /* Jieli Technology USB PHY 2.0 */
 		   QUIRK_FLAG_GET_SAMPLE_RATE | QUIRK_FLAG_MIC_RES_16),
 	DEVICE_FLG(0x1395, 0x740a, /* Sennheiser DECT */
@@ -2244,6 +2250,8 @@ static const struct usb_audio_quirk_flags_table quirk_flags_table[] = {
 		   QUIRK_FLAG_IGNORE_CTL_ERROR),
 	DEVICE_FLG(0x2912, 0x30c8, /* Audioengine D1 */
 		   QUIRK_FLAG_GET_SAMPLE_RATE),
+	DEVICE_FLG(0x2a70, 0x1881, /* OnePlus Technology (Shenzhen) Co., Ltd. BE02T */
+		   QUIRK_FLAG_MIXER_MIN_MUTE),
 	DEVICE_FLG(0x2b53, 0x0023, /* Fiero SC-01 (firmware v1.0.0 @ 48 kHz) */
 		   QUIRK_FLAG_GENERIC_IMPLICIT_FB),
 	DEVICE_FLG(0x2b53, 0x0024, /* Fiero SC-01 (firmware v1.0.0 @ 96 kHz) */
@@ -2260,6 +2268,8 @@ static const struct usb_audio_quirk_flags_table quirk_flags_table[] = {
 		   QUIRK_FLAG_CTL_MSG_DELAY_1M),
 	DEVICE_FLG(0x30be, 0x0101, /* Schiit Hel */
 		   QUIRK_FLAG_IGNORE_CTL_ERROR),
+	DEVICE_FLG(0x339b, 0x3a07, /* Synaptics HONOR USB-C HEADSET */
+		   QUIRK_FLAG_MIXER_MIN_MUTE),
 	DEVICE_FLG(0x413c, 0xa506, /* Dell AE515 sound bar */
 		   QUIRK_FLAG_GET_SAMPLE_RATE),
 	DEVICE_FLG(0x534d, 0x0021, /* MacroSilicon MS2100/MS2106 */
-- 
2.51.0

[PATCH 6.1 17/73] IB/mlx5: Fix obj_type mismatch for SRQ event subscriptions

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Or Har-Toov <ohartoov@nvidia.com>

[ Upstream commit 85fe9f565d2d5af95ac2bbaa5082b8ce62b039f5 ]

Fix a bug where the driver's event subscription logic for SRQ-related
events incorrectly sets obj_type for RMP objects.

When subscribing to SRQ events, get_legacy_obj_type() did not handle
the MLX5_CMD_OP_CREATE_RMP case, which caused obj_type to be 0
(default).
This led to a mismatch between the obj_type used during subscription
(0) and the value used during notification (1, taken from the event's
type field). As a result, event mapping for SRQ objects could fail and
event notification would not be delivered correctly.

This fix adds handling for MLX5_CMD_OP_CREATE_RMP in get_legacy_obj_type,
returning MLX5_EVENT_QUEUE_TYPE_RQ so obj_type is consistent between
subscription and notification.

Fixes: 759738537142 ("IB/mlx5: Enable subscription for device events over DEVX")
Link: https://patch.msgid.link/r/8f1048e3fdd1fde6b90607ce0ed251afaf8a148c.1755088962.git.leon@kernel.org
Signed-off-by: Or Har-Toov <ohartoov@nvidia.com>
Reviewed-by: Edward Srouji <edwards@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/infiniband/hw/mlx5/devx.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/infiniband/hw/mlx5/devx.c b/drivers/infiniband/hw/mlx5/devx.c
index cc126e62643a0..80c26551564fb 100644
--- a/drivers/infiniband/hw/mlx5/devx.c
+++ b/drivers/infiniband/hw/mlx5/devx.c
@@ -191,6 +191,7 @@ static u16 get_legacy_obj_type(u16 opcode)
 {
 	switch (opcode) {
 	case MLX5_CMD_OP_CREATE_RQ:
+	case MLX5_CMD_OP_CREATE_RMP:
 		return MLX5_EVENT_QUEUE_TYPE_RQ;
 	case MLX5_CMD_OP_CREATE_QP:
 		return MLX5_EVENT_QUEUE_TYPE_QP;
-- 
2.51.0

[PATCH 6.1 18/73] mm/gup: revert "mm: gup: fix infinite loop within __get_longterm_locked"

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: David Hildenbrand <david@redhat.com>

[ Upstream commit 517f496e1e61bd169d585dab4dd77e7147506322 ]

After commit 1aaf8c122918 ("mm: gup: fix infinite loop within
__get_longterm_locked") we are able to longterm pin folios that are not
supposed to get longterm pinned, simply because they temporarily have the
LRU flag cleared (esp.  temporarily isolated).

For example, two __get_longterm_locked() callers can race, or
__get_longterm_locked() can race with anything else that temporarily
isolates folios.

The introducing commit mentions the use case of a driver that uses
vm_ops->fault to insert pages allocated through cma_alloc() into the page
tables, assuming they can later get longterm pinned.  These pages/ folios
would never have the LRU flag set and consequently cannot get isolated.
There is no known in-tree user making use of that so far, fortunately.

To handle that in the future -- and avoid retrying forever to
isolate/migrate them -- we will need a different mechanism for the CMA
area *owner* to indicate that it actually already allocated the page and
is fine with longterm pinning it.  The LRU flag is not suitable for that.

Probably we can lookup the relevant CMA area and query the bitmap; we only
have have to care about some races, probably.  If already allocated, we
could just allow longterm pinning)

Anyhow, let's fix the "must not be longterm pinned" problem first by
reverting the original commit.

Link: https://lkml.kernel.org/r/20250611131314.594529-1-david@redhat.com
Fixes: 1aaf8c122918 ("mm: gup: fix infinite loop within __get_longterm_locked")
Signed-off-by: David Hildenbrand <david@redhat.com>
Closes: https://lore.kernel.org/all/20250522092755.GA3277597@tiffany/
Reported-by: Hyesoo Yu <hyesoo.yu@samsung.com>
Reviewed-by: John Hubbard <jhubbard@nvidia.com>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Peter Xu <peterx@redhat.com>
Cc: Zhaoyang Huang <zhaoyang.huang@unisoc.com>
Cc: Aijun Sun <aijun.sun@unisoc.com>
Cc: Alistair Popple <apopple@nvidia.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
[ Revert v6.1.129 commit c986a5fb15ed ]
Signed-off-by: Hugh Dickins <hughd@google.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 mm/gup.c | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/mm/gup.c b/mm/gup.c
index 37c55e61460e2..599c6b9453166 100644
--- a/mm/gup.c
+++ b/mm/gup.c
@@ -1961,14 +1961,14 @@ struct page *get_dump_page(unsigned long addr)
 /*
  * Returns the number of collected pages. Return value is always >= 0.
  */
-static void collect_longterm_unpinnable_pages(
+static unsigned long collect_longterm_unpinnable_pages(
 					struct list_head *movable_page_list,
 					unsigned long nr_pages,
 					struct page **pages)
 {
+	unsigned long i, collected = 0;
 	struct folio *prev_folio = NULL;
 	bool drain_allow = true;
-	unsigned long i;
 
 	for (i = 0; i < nr_pages; i++) {
 		struct folio *folio = page_folio(pages[i]);
@@ -1980,6 +1980,8 @@ static void collect_longterm_unpinnable_pages(
 		if (folio_is_longterm_pinnable(folio))
 			continue;
 
+		collected++;
+
 		if (folio_is_device_coherent(folio))
 			continue;
 
@@ -2001,6 +2003,8 @@ static void collect_longterm_unpinnable_pages(
 				    NR_ISOLATED_ANON + folio_is_file_lru(folio),
 				    folio_nr_pages(folio));
 	}
+
+	return collected;
 }
 
 /*
@@ -2093,10 +2097,12 @@ static int migrate_longterm_unpinnable_pages(
 static long check_and_migrate_movable_pages(unsigned long nr_pages,
 					    struct page **pages)
 {
+	unsigned long collected;
 	LIST_HEAD(movable_page_list);
 
-	collect_longterm_unpinnable_pages(&movable_page_list, nr_pages, pages);
-	if (list_empty(&movable_page_list))
+	collected = collect_longterm_unpinnable_pages(&movable_page_list,
+						nr_pages, pages);
+	if (!collected)
 		return 0;
 
 	return migrate_longterm_unpinnable_pages(&movable_page_list, nr_pages,
-- 
2.51.0

[PATCH 6.1 19/73] mm: add folio_expected_ref_count() for reference count calculation

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Shivank Garg <shivankg@amd.com>

[ Upstream commit 86ebd50224c0734d965843260d0dc057a9431c61 ]

Patch series " JFS: Implement migrate_folio for jfs_metapage_aops" v5.

This patchset addresses a warning that occurs during memory compaction due
to JFS's missing migrate_folio operation.  The warning was introduced by
commit 7ee3647243e5 ("migrate: Remove call to ->writepage") which added
explicit warnings when filesystem don't implement migrate_folio.

The syzbot reported following [1]:
  jfs_metapage_aops does not implement migrate_folio
  WARNING: CPU: 1 PID: 5861 at mm/migrate.c:955 fallback_migrate_folio mm/migrate.c:953 [inline]
  WARNING: CPU: 1 PID: 5861 at mm/migrate.c:955 move_to_new_folio+0x70e/0x840 mm/migrate.c:1007
  Modules linked in:
  CPU: 1 UID: 0 PID: 5861 Comm: syz-executor280 Not tainted 6.15.0-rc1-next-20250411-syzkaller #0 PREEMPT(full)
  Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
  RIP: 0010:fallback_migrate_folio mm/migrate.c:953 [inline]
  RIP: 0010:move_to_new_folio+0x70e/0x840 mm/migrate.c:1007

To fix this issue, this series implement metapage_migrate_folio() for JFS
which handles both single and multiple metapages per page configurations.

While most filesystems leverage existing migration implementations like
filemap_migrate_folio(), buffer_migrate_folio_norefs() or
buffer_migrate_folio() (which internally used folio_expected_refs()),
JFS's metapage architecture requires special handling of its private data
during migration.  To support this, this series introduce the
folio_expected_ref_count(), which calculates external references to a
folio from page/swap cache, private data, and page table mappings.

This standardized implementation replaces the previous ad-hoc
folio_expected_refs() function and enables JFS to accurately determine
whether a folio has unexpected references before attempting migration.

Implement folio_expected_ref_count() to calculate expected folio reference
counts from:
- Page/swap cache (1 per page)
- Private data (1)
- Page table mappings (1 per map)

While originally needed for page migration operations, this improved
implementation standardizes reference counting by consolidating all
refcount contributors into a single, reusable function that can benefit
any subsystem needing to detect unexpected references to folios.

The folio_expected_ref_count() returns the sum of these external
references without including any reference the caller itself might hold.
Callers comparing against the actual folio_ref_count() must account for
their own references separately.

Link: https://syzkaller.appspot.com/bug?extid=8bb6fd945af4e0ad9299 [1]
Link: https://lkml.kernel.org/r/20250430100150.279751-1-shivankg@amd.com
Link: https://lkml.kernel.org/r/20250430100150.279751-2-shivankg@amd.com
Signed-off-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Shivank Garg <shivankg@amd.com>
Suggested-by: Matthew Wilcox <willy@infradead.org>
Co-developed-by: David Hildenbrand <david@redhat.com>
Cc: Alistair Popple <apopple@nvidia.com>
Cc: Dave Kleikamp <shaggy@kernel.org>
Cc: Donet Tom <donettom@linux.ibm.com>
Cc: Jane Chu <jane.chu@oracle.com>
Cc: Kefeng Wang <wangkefeng.wang@huawei.com>
Cc: Zi Yan <ziy@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Stable-dep-of: 98c6d259319e ("mm/gup: check ref_count instead of lru before migration")
[ Take the new function in mm.h, removing "const" from its parameter to stop
  build warnings; but avoid all the conflicts of using it in mm/migrate.c. ]
Signed-off-by: Hugh Dickins <hughd@google.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 include/linux/mm.h | 54 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 54 insertions(+)

diff --git a/include/linux/mm.h b/include/linux/mm.h
index 9e17670de8483..3bf7823e10979 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -1782,6 +1782,60 @@ static inline int folio_estimated_sharers(struct folio *folio)
 	return page_mapcount(folio_page(folio, 0));
 }
 
+/**
+ * folio_expected_ref_count - calculate the expected folio refcount
+ * @folio: the folio
+ *
+ * Calculate the expected folio refcount, taking references from the pagecache,
+ * swapcache, PG_private and page table mappings into account. Useful in
+ * combination with folio_ref_count() to detect unexpected references (e.g.,
+ * GUP or other temporary references).
+ *
+ * Does currently not consider references from the LRU cache. If the folio
+ * was isolated from the LRU (which is the case during migration or split),
+ * the LRU cache does not apply.
+ *
+ * Calling this function on an unmapped folio -- !folio_mapped() -- that is
+ * locked will return a stable result.
+ *
+ * Calling this function on a mapped folio will not result in a stable result,
+ * because nothing stops additional page table mappings from coming (e.g.,
+ * fork()) or going (e.g., munmap()).
+ *
+ * Calling this function without the folio lock will also not result in a
+ * stable result: for example, the folio might get dropped from the swapcache
+ * concurrently.
+ *
+ * However, even when called without the folio lock or on a mapped folio,
+ * this function can be used to detect unexpected references early (for example,
+ * if it makes sense to even lock the folio and unmap it).
+ *
+ * The caller must add any reference (e.g., from folio_try_get()) it might be
+ * holding itself to the result.
+ *
+ * Returns the expected folio refcount.
+ */
+static inline int folio_expected_ref_count(struct folio *folio)
+{
+	const int order = folio_order(folio);
+	int ref_count = 0;
+
+	if (WARN_ON_ONCE(folio_test_slab(folio)))
+		return 0;
+
+	if (folio_test_anon(folio)) {
+		/* One reference per page from the swapcache. */
+		ref_count += folio_test_swapcache(folio) << order;
+	} else if (!((unsigned long)folio->mapping & PAGE_MAPPING_FLAGS)) {
+		/* One reference per page from the pagecache. */
+		ref_count += !!folio->mapping << order;
+		/* One reference from PG_private. */
+		ref_count += folio_test_private(folio);
+	}
+
+	/* One reference per page table mapping. */
+	return ref_count + folio_mapcount(folio);
+}
 
 #ifndef HAVE_ARCH_MAKE_PAGE_ACCESSIBLE
 static inline int arch_make_page_accessible(struct page *page)
-- 
2.51.0

[PATCH 6.1 20/73] mm/gup: check ref_count instead of lru before migration

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Hugh Dickins <hughd@google.com>

[ Upstream commit 98c6d259319ecf6e8d027abd3f14b81324b8c0ad ]

Patch series "mm: better GUP pin lru_add_drain_all()", v2.

Series of lru_add_drain_all()-related patches, arising from recent mm/gup
migration report from Will Deacon.

This patch (of 5):

Will Deacon reports:-

When taking a longterm GUP pin via pin_user_pages(),
__gup_longterm_locked() tries to migrate target folios that should not be
longterm pinned, for example because they reside in a CMA region or
movable zone.  This is done by first pinning all of the target folios
anyway, collecting all of the longterm-unpinnable target folios into a
list, dropping the pins that were just taken and finally handing the list
off to migrate_pages() for the actual migration.

It is critically important that no unexpected references are held on the
folios being migrated, otherwise the migration will fail and
pin_user_pages() will return -ENOMEM to its caller.  Unfortunately, it is
relatively easy to observe migration failures when running pKVM (which
uses pin_user_pages() on crosvm's virtual address space to resolve stage-2
page faults from the guest) on a 6.15-based Pixel 6 device and this
results in the VM terminating prematurely.

In the failure case, 'crosvm' has called mlock(MLOCK_ONFAULT) on its
mapping of guest memory prior to the pinning.  Subsequently, when
pin_user_pages() walks the page-table, the relevant 'pte' is not present
and so the faulting logic allocates a new folio, mlocks it with
mlock_folio() and maps it in the page-table.

Since commit 2fbb0c10d1e8 ("mm/munlock: mlock_page() munlock_page() batch
by pagevec"), mlock/munlock operations on a folio (formerly page), are
deferred.  For example, mlock_folio() takes an additional reference on the
target folio before placing it into a per-cpu 'folio_batch' for later
processing by mlock_folio_batch(), which drops the refcount once the
operation is complete.  Processing of the batches is coupled with the LRU
batch logic and can be forcefully drained with lru_add_drain_all() but as
long as a folio remains unprocessed on the batch, its refcount will be
elevated.

This deferred batching therefore interacts poorly with the pKVM pinning
scenario as we can find ourselves in a situation where the migration code
fails to migrate a folio due to the elevated refcount from the pending
mlock operation.

Hugh Dickins adds:-

!folio_test_lru() has never been a very reliable way to tell if an
lru_add_drain_all() is worth calling, to remove LRU cache references to
make the folio migratable: the LRU flag may be set even while the folio is
held with an extra reference in a per-CPU LRU cache.

5.18 commit 2fbb0c10d1e8 may have made it more unreliable.  Then 6.11
commit 33dfe9204f29 ("mm/gup: clear the LRU flag of a page before adding
to LRU batch") tried to make it reliable, by moving LRU flag clearing; but
missed the mlock/munlock batches, so still unreliable as reported.

And it turns out to be difficult to extend 33dfe9204f29's LRU flag
clearing to the mlock/munlock batches: if they do benefit from batching,
mlock/munlock cannot be so effective when easily suppressed while !LRU.

Instead, switch to an expected ref_count check, which was more reliable
all along: some more false positives (unhelpful drains) than before, and
never a guarantee that the folio will prove migratable, but better.

Note on PG_private_2: ceph and nfs are still using the deprecated
PG_private_2 flag, with the aid of netfs and filemap support functions.
Although it is consistently matched by an increment of folio ref_count,
folio_expected_ref_count() intentionally does not recognize it, and ceph
folio migration currently depends on that for PG_private_2 folios to be
rejected.  New references to the deprecated flag are discouraged, so do
not add it into the collect_longterm_unpinnable_folios() calculation: but
longterm pinning of transiently PG_private_2 ceph and nfs folios (an
uncommon case) may invoke a redundant lru_add_drain_all().  And this makes
easy the backport to earlier releases: up to and including 6.12, btrfs
also used PG_private_2, but without a ref_count increment.

Note for stable backports: requires 6.16 commit 86ebd50224c0 ("mm:
add folio_expected_ref_count() for reference count calculation").

Link: https://lkml.kernel.org/r/41395944-b0e3-c3ac-d648-8ddd70451d28@google.com
Link: https://lkml.kernel.org/r/bd1f314a-fca1-8f19-cac0-b936c9614557@google.com
Fixes: 9a4e9f3b2d73 ("mm: update get_user_pages_longterm to migrate pages allocated from CMA region")
Signed-off-by: Hugh Dickins <hughd@google.com>
Reported-by: Will Deacon <will@kernel.org>
Closes: https://lore.kernel.org/linux-mm/20250815101858.24352-1-will@kernel.org/
Acked-by: Kiryl Shutsemau <kas@kernel.org>
Acked-by: David Hildenbrand <david@redhat.com>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@kernel.org>
Cc: Axel Rasmussen <axelrasmussen@google.com>
Cc: Chris Li <chrisl@kernel.org>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Keir Fraser <keirf@google.com>
Cc: Konstantin Khlebnikov <koct9i@gmail.com>
Cc: Li Zhe <lizhe.67@bytedance.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Peter Xu <peterx@redhat.com>
Cc: Rik van Riel <riel@surriel.com>
Cc: Shivank Garg <shivankg@amd.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Wei Xu <weixugc@google.com>
Cc: yangge <yangge1116@126.com>
Cc: Yuanchu Xie <yuanchu@google.com>
Cc: Yu Zhao <yuzhao@google.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
[ Clean cherry-pick now into this tree ]
Signed-off-by: Hugh Dickins <hughd@google.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 mm/gup.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/mm/gup.c b/mm/gup.c
index 599c6b9453166..44e5fe2535d0e 100644
--- a/mm/gup.c
+++ b/mm/gup.c
@@ -1990,7 +1990,8 @@ static unsigned long collect_longterm_unpinnable_pages(
 			continue;
 		}
 
-		if (!folio_test_lru(folio) && drain_allow) {
+		if (drain_allow && folio_ref_count(folio) !=
+				   folio_expected_ref_count(folio) + 1) {
 			lru_add_drain_all();
 			drain_allow = false;
 		}
-- 
2.51.0

[PATCH 6.1 21/73] mm/gup: local lru_add_drain() to avoid lru_add_drain_all()

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Hugh Dickins <hughd@google.com>

[ Upstream commit a09a8a1fbb374e0053b97306da9dbc05bd384685 ]

In many cases, if collect_longterm_unpinnable_folios() does need to drain
the LRU cache to release a reference, the cache in question is on this
same CPU, and much more efficiently drained by a preliminary local
lru_add_drain(), than the later cross-CPU lru_add_drain_all().

Marked for stable, to counter the increase in lru_add_drain_all()s from
"mm/gup: check ref_count instead of lru before migration".  Note for clean
backports: can take 6.16 commit a03db236aebf ("gup: optimize longterm
pin_user_pages() for large folio") first.

Link: https://lkml.kernel.org/r/66f2751f-283e-816d-9530-765db7edc465@google.com
Signed-off-by: Hugh Dickins <hughd@google.com>
Acked-by: David Hildenbrand <david@redhat.com>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@kernel.org>
Cc: Axel Rasmussen <axelrasmussen@google.com>
Cc: Chris Li <chrisl@kernel.org>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Keir Fraser <keirf@google.com>
Cc: Konstantin Khlebnikov <koct9i@gmail.com>
Cc: Li Zhe <lizhe.67@bytedance.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Peter Xu <peterx@redhat.com>
Cc: Rik van Riel <riel@surriel.com>
Cc: Shivank Garg <shivankg@amd.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Wei Xu <weixugc@google.com>
Cc: Will Deacon <will@kernel.org>
Cc: yangge <yangge1116@126.com>
Cc: Yuanchu Xie <yuanchu@google.com>
Cc: Yu Zhao <yuzhao@google.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
[ Resolved minor conflicts ]
Signed-off-by: Hugh Dickins <hughd@google.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 mm/gup.c | 15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

diff --git a/mm/gup.c b/mm/gup.c
index 44e5fe2535d0e..e1f125af9c844 100644
--- a/mm/gup.c
+++ b/mm/gup.c
@@ -1968,7 +1968,7 @@ static unsigned long collect_longterm_unpinnable_pages(
 {
 	unsigned long i, collected = 0;
 	struct folio *prev_folio = NULL;
-	bool drain_allow = true;
+	int drained = 0;
 
 	for (i = 0; i < nr_pages; i++) {
 		struct folio *folio = page_folio(pages[i]);
@@ -1990,10 +1990,17 @@ static unsigned long collect_longterm_unpinnable_pages(
 			continue;
 		}
 
-		if (drain_allow && folio_ref_count(folio) !=
-				   folio_expected_ref_count(folio) + 1) {
+		if (drained == 0 &&
+				folio_ref_count(folio) !=
+				folio_expected_ref_count(folio) + 1) {
+			lru_add_drain();
+			drained = 1;
+		}
+		if (drained == 1 &&
+				folio_ref_count(folio) !=
+				folio_expected_ref_count(folio) + 1) {
 			lru_add_drain_all();
-			drain_allow = false;
+			drained = 2;
 		}
 
 		if (folio_isolate_lru(folio))
-- 
2.51.0

[PATCH 6.1 22/73] mm: folio_may_be_lru_cached() unless folio_test_large()

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Hugh Dickins <hughd@google.com>

[ Upstream commit 2da6de30e60dd9bb14600eff1cc99df2fa2ddae3 ]

mm/swap.c and mm/mlock.c agree to drain any per-CPU batch as soon as a
large folio is added: so collect_longterm_unpinnable_folios() just wastes
effort when calling lru_add_drain[_all]() on a large folio.

But although there is good reason not to batch up PMD-sized folios, we
might well benefit from batching a small number of low-order mTHPs (though
unclear how that "small number" limitation will be implemented).

So ask if folio_may_be_lru_cached() rather than !folio_test_large(), to
insulate those particular checks from future change.  Name preferred to
"folio_is_batchable" because large folios can well be put on a batch: it's
just the per-CPU LRU caches, drained much later, which need care.

Marked for stable, to counter the increase in lru_add_drain_all()s from
"mm/gup: check ref_count instead of lru before migration".

Link: https://lkml.kernel.org/r/57d2eaf8-3607-f318-e0c5-be02dce61ad0@google.com
Fixes: 9a4e9f3b2d73 ("mm: update get_user_pages_longterm to migrate pages allocated from CMA region")
Signed-off-by: Hugh Dickins <hughd@google.com>
Suggested-by: David Hildenbrand <david@redhat.com>
Acked-by: David Hildenbrand <david@redhat.com>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@kernel.org>
Cc: Axel Rasmussen <axelrasmussen@google.com>
Cc: Chris Li <chrisl@kernel.org>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Keir Fraser <keirf@google.com>
Cc: Konstantin Khlebnikov <koct9i@gmail.com>
Cc: Li Zhe <lizhe.67@bytedance.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Peter Xu <peterx@redhat.com>
Cc: Rik van Riel <riel@surriel.com>
Cc: Shivank Garg <shivankg@amd.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Wei Xu <weixugc@google.com>
Cc: Will Deacon <will@kernel.org>
Cc: yangge <yangge1116@126.com>
Cc: Yuanchu Xie <yuanchu@google.com>
Cc: Yu Zhao <yuzhao@google.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
[ Resolved conflicts in mm/swap.c; left "page" parts of mm/mlock.c as is ]
Signed-off-by: Hugh Dickins <hughd@google.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 include/linux/swap.h | 10 ++++++++++
 mm/gup.c             |  4 ++--
 mm/mlock.c           |  2 +-
 mm/swap.c            |  4 ++--
 4 files changed, 15 insertions(+), 5 deletions(-)

diff --git a/include/linux/swap.h b/include/linux/swap.h
index add47f43e568e..3eecf97dfbb8d 100644
--- a/include/linux/swap.h
+++ b/include/linux/swap.h
@@ -392,6 +392,16 @@ void lru_cache_add(struct page *);
 void mark_page_accessed(struct page *);
 void folio_mark_accessed(struct folio *);
 
+static inline bool folio_may_be_lru_cached(struct folio *folio)
+{
+	/*
+	 * Holding PMD-sized folios in per-CPU LRU cache unbalances accounting.
+	 * Holding small numbers of low-order mTHP folios in per-CPU LRU cache
+	 * will be sensible, but nobody has implemented and tested that yet.
+	 */
+	return !folio_test_large(folio);
+}
+
 extern atomic_t lru_disable_count;
 
 static inline bool lru_cache_disabled(void)
diff --git a/mm/gup.c b/mm/gup.c
index e1f125af9c844..b02993c9a8cdf 100644
--- a/mm/gup.c
+++ b/mm/gup.c
@@ -1990,13 +1990,13 @@ static unsigned long collect_longterm_unpinnable_pages(
 			continue;
 		}
 
-		if (drained == 0 &&
+		if (drained == 0 && folio_may_be_lru_cached(folio) &&
 				folio_ref_count(folio) !=
 				folio_expected_ref_count(folio) + 1) {
 			lru_add_drain();
 			drained = 1;
 		}
-		if (drained == 1 &&
+		if (drained == 1 && folio_may_be_lru_cached(folio) &&
 				folio_ref_count(folio) !=
 				folio_expected_ref_count(folio) + 1) {
 			lru_add_drain_all();
diff --git a/mm/mlock.c b/mm/mlock.c
index 7032f6dd0ce19..3bf9e1d263da4 100644
--- a/mm/mlock.c
+++ b/mm/mlock.c
@@ -256,7 +256,7 @@ void mlock_folio(struct folio *folio)
 
 	folio_get(folio);
 	if (!pagevec_add(pvec, mlock_lru(&folio->page)) ||
-	    folio_test_large(folio) || lru_cache_disabled())
+	    !folio_may_be_lru_cached(folio) || lru_cache_disabled())
 		mlock_pagevec(pvec);
 	local_unlock(&mlock_pvec.lock);
 }
diff --git a/mm/swap.c b/mm/swap.c
index 85aa04fc48a67..e0fdf25350002 100644
--- a/mm/swap.c
+++ b/mm/swap.c
@@ -249,8 +249,8 @@ static void folio_batch_move_lru(struct folio_batch *fbatch, move_fn_t move_fn)
 static void folio_batch_add_and_move(struct folio_batch *fbatch,
 		struct folio *folio, move_fn_t move_fn)
 {
-	if (folio_batch_add(fbatch, folio) && !folio_test_large(folio) &&
-	    !lru_cache_disabled())
+	if (folio_batch_add(fbatch, folio) &&
+	    folio_may_be_lru_cached(folio) && !lru_cache_disabled())
 		return;
 	folio_batch_move_lru(fbatch, move_fn);
 }
-- 
2.51.0

[PATCH 6.1 23/73] arm64: dts: imx8mp: Correct thermal sensor index

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Peng Fan <peng.fan@nxp.com>

[ Upstream commit a50342f976d25aace73ff551845ce89406f48f35 ]

The TMU has two temperature measurement sites located on the chip. The
probe 0 is located inside of the ANAMIX, while the probe 1 is located near
the ARM core. This has been confirmed by checking with HW design team and
checking RTL code.

So correct the {cpu,soc}-thermal sensor index.

Fixes: 30cdd62dce6b ("arm64: dts: imx8mp: Add thermal zones support")
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/arm64/boot/dts/freescale/imx8mp.dtsi | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/freescale/imx8mp.dtsi b/arch/arm64/boot/dts/freescale/imx8mp.dtsi
index 86af7115ac60c..e05a1029975af 100644
--- a/arch/arm64/boot/dts/freescale/imx8mp.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mp.dtsi
@@ -227,7 +227,7 @@
 		cpu-thermal {
 			polling-delay-passive = <250>;
 			polling-delay = <2000>;
-			thermal-sensors = <&tmu 0>;
+			thermal-sensors = <&tmu 1>;
 			trips {
 				cpu_alert0: trip0 {
 					temperature = <85000>;
@@ -257,7 +257,7 @@
 		soc-thermal {
 			polling-delay-passive = <250>;
 			polling-delay = <2000>;
-			thermal-sensors = <&tmu 1>;
+			thermal-sensors = <&tmu 0>;
 			trips {
 				soc_alert0: trip0 {
 					temperature = <85000>;
-- 
2.51.0

[PATCH 6.1 24/73] cpufreq: Initialize cpufreq-based invariance before subsys

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Christian Loehle <christian.loehle@arm.com>

[ Upstream commit 8ffe28b4e8d8b18cb2f2933410322c24f039d5d6 ]

commit 2a6c72738706 ("cpufreq: Initialize cpufreq-based
frequency-invariance later") postponed the frequency invariance
initialization to avoid disabling it in the error case.
This isn't locking safe, instead move the initialization up before
the subsys interface is registered (which will rebuild the
sched_domains) and add the corresponding disable on the error path.

Observed lockdep without this patch:
[    0.989686] ======================================================
[    0.989688] WARNING: possible circular locking dependency detected
[    0.989690] 6.17.0-rc4-cix-build+ #31 Tainted: G S
[    0.989691] ------------------------------------------------------
[    0.989692] swapper/0/1 is trying to acquire lock:
[    0.989693] ffff800082ada7f8 (sched_energy_mutex){+.+.}-{4:4}, at: rebuild_sched_domains_energy+0x30/0x58
[    0.989705]
               but task is already holding lock:
[    0.989706] ffff000088c89bc8 (&policy->rwsem){+.+.}-{4:4}, at: cpufreq_online+0x7f8/0xbe0
[    0.989713]
               which lock already depends on the new lock.

Fixes: 2a6c72738706 ("cpufreq: Initialize cpufreq-based frequency-invariance later")
Signed-off-by: Christian Loehle <christian.loehle@arm.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/cpufreq/cpufreq.c | 20 +++++++++++---------
 1 file changed, 11 insertions(+), 9 deletions(-)

diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index 90bdccab1dffb..de67d9c6c9c68 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -2894,6 +2894,15 @@ int cpufreq_register_driver(struct cpufreq_driver *driver_data)
 			goto err_null_driver;
 	}
 
+	/*
+	 * Mark support for the scheduler's frequency invariance engine for
+	 * drivers that implement target(), target_index() or fast_switch().
+	 */
+	if (!cpufreq_driver->setpolicy) {
+		static_branch_enable_cpuslocked(&cpufreq_freq_invariance);
+		pr_debug("cpufreq: supports frequency invariance\n");
+	}
+
 	ret = subsys_interface_register(&cpufreq_interface);
 	if (ret)
 		goto err_boost_unreg;
@@ -2915,21 +2924,14 @@ int cpufreq_register_driver(struct cpufreq_driver *driver_data)
 	hp_online = ret;
 	ret = 0;
 
-	/*
-	 * Mark support for the scheduler's frequency invariance engine for
-	 * drivers that implement target(), target_index() or fast_switch().
-	 */
-	if (!cpufreq_driver->setpolicy) {
-		static_branch_enable_cpuslocked(&cpufreq_freq_invariance);
-		pr_debug("supports frequency invariance");
-	}
-
 	pr_debug("driver %s up and running\n", driver_data->name);
 	goto out;
 
 err_if_unreg:
 	subsys_interface_unregister(&cpufreq_interface);
 err_boost_unreg:
+	if (!cpufreq_driver->setpolicy)
+		static_branch_disable_cpuslocked(&cpufreq_freq_invariance);
 	remove_boost_sysfs_file();
 err_null_driver:
 	write_lock_irqsave(&cpufreq_driver_lock, flags);
-- 
2.51.0

[PATCH 6.1 25/73] smb: server: dont use delayed_work for post_recv_credits_work

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Stefan Metzmacher <metze@samba.org>

[ Upstream commit 1cde0a74a7a8951b3097417847a458e557be0b5b ]

If we are using a hardcoded delay of 0 there's no point in
using delayed_work it only adds confusion.

The client also uses a normal work_struct and now
it is easier to move it to the common smbdirect_socket.

Cc: Namjae Jeon <linkinjeon@kernel.org>
Cc: Steve French <smfrench@gmail.com>
Cc: Tom Talpey <tom@talpey.com>
Cc: linux-cifs@vger.kernel.org
Cc: samba-technical@lists.samba.org
Fixes: 0626e6641f6b ("cifsd: add server handler for central processing and tranport layers")
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Acked-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 fs/smb/server/transport_rdma.c | 18 ++++++++----------
 1 file changed, 8 insertions(+), 10 deletions(-)

diff --git a/fs/smb/server/transport_rdma.c b/fs/smb/server/transport_rdma.c
index 323b8a401a8c0..84b5b2f5df998 100644
--- a/fs/smb/server/transport_rdma.c
+++ b/fs/smb/server/transport_rdma.c
@@ -147,7 +147,7 @@ struct smb_direct_transport {
 	wait_queue_head_t	wait_send_pending;
 	atomic_t		send_pending;
 
-	struct delayed_work	post_recv_credits_work;
+	struct work_struct	post_recv_credits_work;
 	struct work_struct	send_immediate_work;
 	struct work_struct	disconnect_work;
 
@@ -365,8 +365,8 @@ static struct smb_direct_transport *alloc_transport(struct rdma_cm_id *cm_id)
 
 	spin_lock_init(&t->lock_new_recv_credits);
 
-	INIT_DELAYED_WORK(&t->post_recv_credits_work,
-			  smb_direct_post_recv_credits);
+	INIT_WORK(&t->post_recv_credits_work,
+		  smb_direct_post_recv_credits);
 	INIT_WORK(&t->send_immediate_work, smb_direct_send_immediate_work);
 	INIT_WORK(&t->disconnect_work, smb_direct_disconnect_rdma_work);
 
@@ -393,7 +393,7 @@ static void free_transport(struct smb_direct_transport *t)
 		   atomic_read(&t->send_pending) == 0);
 
 	cancel_work_sync(&t->disconnect_work);
-	cancel_delayed_work_sync(&t->post_recv_credits_work);
+	cancel_work_sync(&t->post_recv_credits_work);
 	cancel_work_sync(&t->send_immediate_work);
 
 	if (t->qp) {
@@ -609,8 +609,7 @@ static void recv_done(struct ib_cq *cq, struct ib_wc *wc)
 			wake_up_interruptible(&t->wait_send_credits);
 
 		if (is_receive_credit_post_required(receive_credits, avail_recvmsg_count))
-			mod_delayed_work(smb_direct_wq,
-					 &t->post_recv_credits_work, 0);
+			queue_work(smb_direct_wq, &t->post_recv_credits_work);
 
 		if (data_length) {
 			enqueue_reassembly(t, recvmsg, (int)data_length);
@@ -767,8 +766,7 @@ static int smb_direct_read(struct ksmbd_transport *t, char *buf,
 		st->count_avail_recvmsg += queue_removed;
 		if (is_receive_credit_post_required(st->recv_credits, st->count_avail_recvmsg)) {
 			spin_unlock(&st->receive_credit_lock);
-			mod_delayed_work(smb_direct_wq,
-					 &st->post_recv_credits_work, 0);
+			queue_work(smb_direct_wq, &st->post_recv_credits_work);
 		} else {
 			spin_unlock(&st->receive_credit_lock);
 		}
@@ -795,7 +793,7 @@ static int smb_direct_read(struct ksmbd_transport *t, char *buf,
 static void smb_direct_post_recv_credits(struct work_struct *work)
 {
 	struct smb_direct_transport *t = container_of(work,
-		struct smb_direct_transport, post_recv_credits_work.work);
+		struct smb_direct_transport, post_recv_credits_work);
 	struct smb_direct_recvmsg *recvmsg;
 	int receive_credits, credits = 0;
 	int ret;
@@ -1676,7 +1674,7 @@ static int smb_direct_prepare_negotiation(struct smb_direct_transport *t)
 		goto out_err;
 	}
 
-	smb_direct_post_recv_credits(&t->post_recv_credits_work.work);
+	smb_direct_post_recv_credits(&t->post_recv_credits_work);
 	return 0;
 out_err:
 	put_recvmsg(t, recvmsg);
-- 
2.51.0

[PATCH 6.1 26/73] can: rcar_can: rcar_can_resume(): fix s2ram with PSCI

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Geert Uytterhoeven <geert+renesas@glider.be>

[ Upstream commit 5c793afa07da6d2d4595f6c73a2a543a471bb055 ]

On R-Car Gen3 using PSCI, s2ram powers down the SoC.  After resume, the
CAN interface no longer works, until it is brought down and up again.

Fix this by calling rcar_can_start() from the PM resume callback, to
fully initialize the controller instead of just restarting it.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://patch.msgid.link/699b2f7fcb60b31b6f976a37f08ce99c5ffccb31.1755165227.git.geert+renesas@glider.be
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/can/rcar/rcar_can.c | 8 +-------
 1 file changed, 1 insertion(+), 7 deletions(-)

diff --git a/drivers/net/can/rcar/rcar_can.c b/drivers/net/can/rcar/rcar_can.c
index cc43c9c5e38c5..92a3f28bea87a 100644
--- a/drivers/net/can/rcar/rcar_can.c
+++ b/drivers/net/can/rcar/rcar_can.c
@@ -862,7 +862,6 @@ static int __maybe_unused rcar_can_resume(struct device *dev)
 {
 	struct net_device *ndev = dev_get_drvdata(dev);
 	struct rcar_can_priv *priv = netdev_priv(ndev);
-	u16 ctlr;
 	int err;
 
 	if (!netif_running(ndev))
@@ -874,12 +873,7 @@ static int __maybe_unused rcar_can_resume(struct device *dev)
 		return err;
 	}
 
-	ctlr = readw(&priv->regs->ctlr);
-	ctlr &= ~RCAR_CAN_CTLR_SLPM;
-	writew(ctlr, &priv->regs->ctlr);
-	ctlr &= ~RCAR_CAN_CTLR_CANM;
-	writew(ctlr, &priv->regs->ctlr);
-	priv->can.state = CAN_STATE_ERROR_ACTIVE;
+	rcar_can_start(ndev);
 
 	netif_device_attach(ndev);
 	netif_start_queue(ndev);
-- 
2.51.0

[PATCH 6.1 27/73] bpf: Reject bpf_timer for PREEMPT_RT

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Leon Hwang <leon.hwang@linux.dev>

[ Upstream commit e25ddfb388c8b7e5f20e3bf38d627fb485003781 ]

When enable CONFIG_PREEMPT_RT, the kernel will warn when run timer
selftests by './test_progs -t timer':

BUG: sleeping function called from invalid context at kernel/locking/spinlock_rt.c:48

In order to avoid such warning, reject bpf_timer in verifier when
PREEMPT_RT is enabled.

Signed-off-by: Leon Hwang <leon.hwang@linux.dev>
Link: https://lore.kernel.org/r/20250910125740.52172-2-leon.hwang@linux.dev
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 kernel/bpf/verifier.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c
index ead1811534a0d..276a0de9a1bb2 100644
--- a/kernel/bpf/verifier.c
+++ b/kernel/bpf/verifier.c
@@ -5733,6 +5733,10 @@ static int process_timer_func(struct bpf_verifier_env *env, int regno,
 		verbose(env, "verifier bug. Two map pointers in a timer helper\n");
 		return -EFAULT;
 	}
+	if (IS_ENABLED(CONFIG_PREEMPT_RT)) {
+		verbose(env, "bpf_timer cannot be used for PREEMPT_RT.\n");
+		return -EOPNOTSUPP;
+	}
 	meta->map_uid = reg->map_uid;
 	meta->map_ptr = map;
 	return 0;
-- 
2.51.0

[PATCH 6.1 28/73] can: etas_es58x: sort the includes by alphabetic order

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Vincent Mailhol <mailhol.vincent@wanadoo.fr>

[ Upstream commit 8fd9323ef7210b90d1d209dd4f0d65a8411b60e1 ]

Follow the best practices, reorder the includes.

While doing so, bump up copyright year of each modified files.

Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Link: https://lore.kernel.org/all/20221126160525.87036-1-mailhol.vincent@wanadoo.fr
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Stable-dep-of: 38c0abad45b1 ("can: etas_es58x: populate ndo_change_mtu() to prevent buffer overflow")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/can/usb/etas_es58x/es581_4.c    | 4 ++--
 drivers/net/can/usb/etas_es58x/es58x_core.c | 6 +++---
 drivers/net/can/usb/etas_es58x/es58x_core.h | 8 ++++----
 drivers/net/can/usb/etas_es58x/es58x_fd.c   | 4 ++--
 4 files changed, 11 insertions(+), 11 deletions(-)

diff --git a/drivers/net/can/usb/etas_es58x/es581_4.c b/drivers/net/can/usb/etas_es58x/es581_4.c
index 1bcdcece5ec72..4151b18fd045d 100644
--- a/drivers/net/can/usb/etas_es58x/es581_4.c
+++ b/drivers/net/can/usb/etas_es58x/es581_4.c
@@ -6,12 +6,12 @@
  *
  * Copyright (c) 2019 Robert Bosch Engineering and Business Solutions. All rights reserved.
  * Copyright (c) 2020 ETAS K.K.. All rights reserved.
- * Copyright (c) 2020, 2021 Vincent Mailhol <mailhol.vincent@wanadoo.fr>
+ * Copyright (c) 2020-2022 Vincent Mailhol <mailhol.vincent@wanadoo.fr>
  */
 
+#include <asm/unaligned.h>
 #include <linux/kernel.h>
 #include <linux/units.h>
-#include <asm/unaligned.h>
 
 #include "es58x_core.h"
 #include "es581_4.h"
diff --git a/drivers/net/can/usb/etas_es58x/es58x_core.c b/drivers/net/can/usb/etas_es58x/es58x_core.c
index ddb7c5735c9ac..5aba168496037 100644
--- a/drivers/net/can/usb/etas_es58x/es58x_core.c
+++ b/drivers/net/can/usb/etas_es58x/es58x_core.c
@@ -7,15 +7,15 @@
  *
  * Copyright (c) 2019 Robert Bosch Engineering and Business Solutions. All rights reserved.
  * Copyright (c) 2020 ETAS K.K.. All rights reserved.
- * Copyright (c) 2020, 2021 Vincent Mailhol <mailhol.vincent@wanadoo.fr>
+ * Copyright (c) 2020-2022 Vincent Mailhol <mailhol.vincent@wanadoo.fr>
  */
 
+#include <asm/unaligned.h>
+#include <linux/crc16.h>
 #include <linux/ethtool.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/usb.h>
-#include <linux/crc16.h>
-#include <asm/unaligned.h>
 
 #include "es58x_core.h"
 
diff --git a/drivers/net/can/usb/etas_es58x/es58x_core.h b/drivers/net/can/usb/etas_es58x/es58x_core.h
index 640fe0a1df636..4a082fd69e6ff 100644
--- a/drivers/net/can/usb/etas_es58x/es58x_core.h
+++ b/drivers/net/can/usb/etas_es58x/es58x_core.h
@@ -6,17 +6,17 @@
  *
  * Copyright (c) 2019 Robert Bosch Engineering and Business Solutions. All rights reserved.
  * Copyright (c) 2020 ETAS K.K.. All rights reserved.
- * Copyright (c) 2020, 2021 Vincent Mailhol <mailhol.vincent@wanadoo.fr>
+ * Copyright (c) 2020-2022 Vincent Mailhol <mailhol.vincent@wanadoo.fr>
  */
 
 #ifndef __ES58X_COMMON_H__
 #define __ES58X_COMMON_H__
 
-#include <linux/types.h>
-#include <linux/usb.h>
-#include <linux/netdevice.h>
 #include <linux/can.h>
 #include <linux/can/dev.h>
+#include <linux/netdevice.h>
+#include <linux/types.h>
+#include <linux/usb.h>
 
 #include "es581_4.h"
 #include "es58x_fd.h"
diff --git a/drivers/net/can/usb/etas_es58x/es58x_fd.c b/drivers/net/can/usb/etas_es58x/es58x_fd.c
index c97ffa71fd758..fa87b0b78e3eb 100644
--- a/drivers/net/can/usb/etas_es58x/es58x_fd.c
+++ b/drivers/net/can/usb/etas_es58x/es58x_fd.c
@@ -8,12 +8,12 @@
  *
  * Copyright (c) 2019 Robert Bosch Engineering and Business Solutions. All rights reserved.
  * Copyright (c) 2020 ETAS K.K.. All rights reserved.
- * Copyright (c) 2020, 2021 Vincent Mailhol <mailhol.vincent@wanadoo.fr>
+ * Copyright (c) 2020-2022 Vincent Mailhol <mailhol.vincent@wanadoo.fr>
  */
 
+#include <asm/unaligned.h>
 #include <linux/kernel.h>
 #include <linux/units.h>
-#include <asm/unaligned.h>
 
 #include "es58x_core.h"
 #include "es58x_fd.h"
-- 
2.51.0

[PATCH 6.1 29/73] can: etas_es58x: populate ndo_change_mtu() to prevent buffer overflow

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Vincent Mailhol <mailhol@kernel.org>

[ Upstream commit 38c0abad45b190a30d8284a37264d2127a6ec303 ]

Sending an PF_PACKET allows to bypass the CAN framework logic and to
directly reach the xmit() function of a CAN driver. The only check
which is performed by the PF_PACKET framework is to make sure that
skb->len fits the interface's MTU.

Unfortunately, because the etas_es58x driver does not populate its
net_device_ops->ndo_change_mtu(), it is possible for an attacker to
configure an invalid MTU by doing, for example:

  $ ip link set can0 mtu 9999

After doing so, the attacker could open a PF_PACKET socket using the
ETH_P_CANXL protocol:

	socket(PF_PACKET, SOCK_RAW, htons(ETH_P_CANXL));

to inject a malicious CAN XL frames. For example:

	struct canxl_frame frame = {
		.flags = 0xff,
		.len = 2048,
	};

The CAN drivers' xmit() function are calling can_dev_dropped_skb() to
check that the skb is valid, unfortunately under above conditions, the
malicious packet is able to go through can_dev_dropped_skb() checks:

  1. the skb->protocol is set to ETH_P_CANXL which is valid (the
     function does not check the actual device capabilities).

  2. the length is a valid CAN XL length.

And so, es58x_start_xmit() receives a CAN XL frame which it is not
able to correctly handle and will thus misinterpret it as a CAN(FD)
frame.

This can result in a buffer overflow. For example, using the es581.4
variant, the frame will be dispatched to es581_4_tx_can_msg(), go
through the last check at the beginning of this function:

	if (can_is_canfd_skb(skb))
		return -EMSGSIZE;

and reach this line:

	memcpy(tx_can_msg->data, cf->data, cf->len);

Here, cf->len corresponds to the flags field of the CAN XL frame. In
our previous example, we set canxl_frame->flags to 0xff. Because the
maximum expected length is 8, a buffer overflow of 247 bytes occurs!

Populate net_device_ops->ndo_change_mtu() to ensure that the
interface's MTU can not be set to anything bigger than CAN_MTU or
CANFD_MTU (depending on the device capabilities). By fixing the root
cause, this prevents the buffer overflow.

Fixes: 8537257874e9 ("can: etas_es58x: add core support for ETAS ES58X CAN USB interfaces")
Signed-off-by: Vincent Mailhol <mailhol@kernel.org>
Link: https://patch.msgid.link/20250918-can-fix-mtu-v1-1-0d1cada9393b@kernel.org
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/can/usb/etas_es58x/es58x_core.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/can/usb/etas_es58x/es58x_core.c b/drivers/net/can/usb/etas_es58x/es58x_core.c
index 5aba168496037..41bea531234db 100644
--- a/drivers/net/can/usb/etas_es58x/es58x_core.c
+++ b/drivers/net/can/usb/etas_es58x/es58x_core.c
@@ -7,7 +7,7 @@
  *
  * Copyright (c) 2019 Robert Bosch Engineering and Business Solutions. All rights reserved.
  * Copyright (c) 2020 ETAS K.K.. All rights reserved.
- * Copyright (c) 2020-2022 Vincent Mailhol <mailhol.vincent@wanadoo.fr>
+ * Copyright (c) 2020-2025 Vincent Mailhol <mailhol@kernel.org>
  */
 
 #include <asm/unaligned.h>
@@ -1976,6 +1976,7 @@ static const struct net_device_ops es58x_netdev_ops = {
 	.ndo_stop = es58x_stop,
 	.ndo_start_xmit = es58x_start_xmit,
 	.ndo_eth_ioctl = can_eth_ioctl_hwts,
+	.ndo_change_mtu = can_change_mtu,
 };
 
 static const struct ethtool_ops es58x_ethtool_ops = {
-- 
2.51.0

[PATCH 6.1 30/73] can: hi311x: populate ndo_change_mtu() to prevent buffer overflow

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Vincent Mailhol <mailhol@kernel.org>

[ Upstream commit ac1c7656fa717f29fac3ea073af63f0b9919ec9a ]

Sending an PF_PACKET allows to bypass the CAN framework logic and to
directly reach the xmit() function of a CAN driver. The only check
which is performed by the PF_PACKET framework is to make sure that
skb->len fits the interface's MTU.

Unfortunately, because the sun4i_can driver does not populate its
net_device_ops->ndo_change_mtu(), it is possible for an attacker to
configure an invalid MTU by doing, for example:

  $ ip link set can0 mtu 9999

After doing so, the attacker could open a PF_PACKET socket using the
ETH_P_CANXL protocol:

	socket(PF_PACKET, SOCK_RAW, htons(ETH_P_CANXL))

to inject a malicious CAN XL frames. For example:

	struct canxl_frame frame = {
		.flags = 0xff,
		.len = 2048,
	};

The CAN drivers' xmit() function are calling can_dev_dropped_skb() to
check that the skb is valid, unfortunately under above conditions, the
malicious packet is able to go through can_dev_dropped_skb() checks:

  1. the skb->protocol is set to ETH_P_CANXL which is valid (the
     function does not check the actual device capabilities).

  2. the length is a valid CAN XL length.

And so, hi3110_hard_start_xmit() receives a CAN XL frame which it is
not able to correctly handle and will thus misinterpret it as a CAN
frame. The driver will consume frame->len as-is with no further
checks.

This can result in a buffer overflow later on in hi3110_hw_tx() on
this line:

	memcpy(buf + HI3110_FIFO_EXT_DATA_OFF,
	       frame->data, frame->len);

Here, frame->len corresponds to the flags field of the CAN XL frame.
In our previous example, we set canxl_frame->flags to 0xff. Because
the maximum expected length is 8, a buffer overflow of 247 bytes
occurs!

Populate net_device_ops->ndo_change_mtu() to ensure that the
interface's MTU can not be set to anything bigger than CAN_MTU. By
fixing the root cause, this prevents the buffer overflow.

Fixes: 57e83fb9b746 ("can: hi311x: Add Holt HI-311x CAN driver")
Signed-off-by: Vincent Mailhol <mailhol@kernel.org>
Link: https://patch.msgid.link/20250918-can-fix-mtu-v1-2-0d1cada9393b@kernel.org
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/can/spi/hi311x.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/can/spi/hi311x.c b/drivers/net/can/spi/hi311x.c
index b757555ed4c4f..57ea7dfe8a596 100644
--- a/drivers/net/can/spi/hi311x.c
+++ b/drivers/net/can/spi/hi311x.c
@@ -813,6 +813,7 @@ static const struct net_device_ops hi3110_netdev_ops = {
 	.ndo_open = hi3110_open,
 	.ndo_stop = hi3110_stop,
 	.ndo_start_xmit = hi3110_hard_start_xmit,
+	.ndo_change_mtu = can_change_mtu,
 };
 
 static const struct ethtool_ops hi3110_ethtool_ops = {
-- 
2.51.0

[PATCH 6.1 31/73] can: sun4i_can: populate ndo_change_mtu() to prevent buffer overflow

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Vincent Mailhol <mailhol@kernel.org>

[ Upstream commit 61da0bd4102c459823fbe6b8b43b01fb6ace4a22 ]

Sending an PF_PACKET allows to bypass the CAN framework logic and to
directly reach the xmit() function of a CAN driver. The only check
which is performed by the PF_PACKET framework is to make sure that
skb->len fits the interface's MTU.

Unfortunately, because the sun4i_can driver does not populate its
net_device_ops->ndo_change_mtu(), it is possible for an attacker to
configure an invalid MTU by doing, for example:

  $ ip link set can0 mtu 9999

After doing so, the attacker could open a PF_PACKET socket using the
ETH_P_CANXL protocol:

	socket(PF_PACKET, SOCK_RAW, htons(ETH_P_CANXL))

to inject a malicious CAN XL frames. For example:

	struct canxl_frame frame = {
		.flags = 0xff,
		.len = 2048,
	};

The CAN drivers' xmit() function are calling can_dev_dropped_skb() to
check that the skb is valid, unfortunately under above conditions, the
malicious packet is able to go through can_dev_dropped_skb() checks:

  1. the skb->protocol is set to ETH_P_CANXL which is valid (the
     function does not check the actual device capabilities).

  2. the length is a valid CAN XL length.

And so, sun4ican_start_xmit() receives a CAN XL frame which it is not
able to correctly handle and will thus misinterpret it as a CAN frame.

This can result in a buffer overflow. The driver will consume cf->len
as-is with no further checks on this line:

	dlc = cf->len;

Here, cf->len corresponds to the flags field of the CAN XL frame. In
our previous example, we set canxl_frame->flags to 0xff. Because the
maximum expected length is 8, a buffer overflow of 247 bytes occurs a
couple line below when doing:

	for (i = 0; i < dlc; i++)
		writel(cf->data[i], priv->base + (dreg + i * 4));

Populate net_device_ops->ndo_change_mtu() to ensure that the
interface's MTU can not be set to anything bigger than CAN_MTU. By
fixing the root cause, this prevents the buffer overflow.

Fixes: 0738eff14d81 ("can: Allwinner A10/A20 CAN Controller support - Kernel module")
Signed-off-by: Vincent Mailhol <mailhol@kernel.org>
Link: https://patch.msgid.link/20250918-can-fix-mtu-v1-3-0d1cada9393b@kernel.org
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/can/sun4i_can.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/can/sun4i_can.c b/drivers/net/can/sun4i_can.c
index 4bec1e7e7b3e3..380f90bc7a422 100644
--- a/drivers/net/can/sun4i_can.c
+++ b/drivers/net/can/sun4i_can.c
@@ -769,6 +769,7 @@ static const struct net_device_ops sun4ican_netdev_ops = {
 	.ndo_open = sun4ican_open,
 	.ndo_stop = sun4ican_close,
 	.ndo_start_xmit = sun4ican_start_xmit,
+	.ndo_change_mtu = can_change_mtu,
 };
 
 static const struct ethtool_ops sun4ican_ethtool_ops = {
-- 
2.51.0

[PATCH 6.1 32/73] can: mcba_usb: populate ndo_change_mtu() to prevent buffer overflow

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Vincent Mailhol <mailhol@kernel.org>

[ Upstream commit 17c8d794527f01def0d1c8b7dc2d7b8d34fed0e6 ]

Sending an PF_PACKET allows to bypass the CAN framework logic and to
directly reach the xmit() function of a CAN driver. The only check
which is performed by the PF_PACKET framework is to make sure that
skb->len fits the interface's MTU.

Unfortunately, because the mcba_usb driver does not populate its
net_device_ops->ndo_change_mtu(), it is possible for an attacker to
configure an invalid MTU by doing, for example:

  $ ip link set can0 mtu 9999

After doing so, the attacker could open a PF_PACKET socket using the
ETH_P_CANXL protocol:

	socket(PF_PACKET, SOCK_RAW, htons(ETH_P_CANXL))

to inject a malicious CAN XL frames. For example:

	struct canxl_frame frame = {
		.flags = 0xff,
		.len = 2048,
	};

The CAN drivers' xmit() function are calling can_dev_dropped_skb() to
check that the skb is valid, unfortunately under above conditions, the
malicious packet is able to go through can_dev_dropped_skb() checks:

  1. the skb->protocol is set to ETH_P_CANXL which is valid (the
     function does not check the actual device capabilities).

  2. the length is a valid CAN XL length.

And so, mcba_usb_start_xmit() receives a CAN XL frame which it is not
able to correctly handle and will thus misinterpret it as a CAN frame.

This can result in a buffer overflow. The driver will consume cf->len
as-is with no further checks on these lines:

	usb_msg.dlc = cf->len;

	memcpy(usb_msg.data, cf->data, usb_msg.dlc);

Here, cf->len corresponds to the flags field of the CAN XL frame. In
our previous example, we set canxl_frame->flags to 0xff. Because the
maximum expected length is 8, a buffer overflow of 247 bytes occurs!

Populate net_device_ops->ndo_change_mtu() to ensure that the
interface's MTU can not be set to anything bigger than CAN_MTU. By
fixing the root cause, this prevents the buffer overflow.

Fixes: 51f3baad7de9 ("can: mcba_usb: Add support for Microchip CAN BUS Analyzer")
Signed-off-by: Vincent Mailhol <mailhol@kernel.org>
Link: https://patch.msgid.link/20250918-can-fix-mtu-v1-4-0d1cada9393b@kernel.org
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/can/usb/mcba_usb.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/can/usb/mcba_usb.c b/drivers/net/can/usb/mcba_usb.c
index 47619e9cb0055..ecc489afb8416 100644
--- a/drivers/net/can/usb/mcba_usb.c
+++ b/drivers/net/can/usb/mcba_usb.c
@@ -761,6 +761,7 @@ static const struct net_device_ops mcba_netdev_ops = {
 	.ndo_open = mcba_usb_open,
 	.ndo_stop = mcba_usb_close,
 	.ndo_start_xmit = mcba_usb_start_xmit,
+	.ndo_change_mtu = can_change_mtu,
 };
 
 static const struct ethtool_ops mcba_ethtool_ops = {
-- 
2.51.0

[PATCH 6.1 33/73] can: peak_usb: fix shift-out-of-bounds issue

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Stéphane Grosjean <stephane.grosjean@hms-networks.com>

[ Upstream commit c443be70aaee42c2d1d251e0329e0a69dd96ae54 ]

Explicitly uses a 64-bit constant when the number of bits used for its
shifting is 32 (which is the case for PC CAN FD interfaces supported by
this driver).

Signed-off-by: Stéphane Grosjean <stephane.grosjean@hms-networks.com>
Link: https://patch.msgid.link/20250918132413.30071-1-stephane.grosjean@free.fr
Reported-by: Marc Kleine-Budde <mkl@pengutronix.de>
Closes: https://lore.kernel.org/20250917-aboriginal-refined-honeybee-82b1aa-mkl@pengutronix.de
Fixes: bb4785551f64 ("can: usb: PEAK-System Technik USB adapters driver core")
[mkl: update subject, apply manually]
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/can/usb/peak_usb/pcan_usb_core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/can/usb/peak_usb/pcan_usb_core.c b/drivers/net/can/usb/peak_usb/pcan_usb_core.c
index 1d996d3320fef..928a78947cb0b 100644
--- a/drivers/net/can/usb/peak_usb/pcan_usb_core.c
+++ b/drivers/net/can/usb/peak_usb/pcan_usb_core.c
@@ -89,7 +89,7 @@ void peak_usb_update_ts_now(struct peak_time_ref *time_ref, u32 ts_now)
 		u32 delta_ts = time_ref->ts_dev_2 - time_ref->ts_dev_1;
 
 		if (time_ref->ts_dev_2 < time_ref->ts_dev_1)
-			delta_ts &= (1 << time_ref->adapter->ts_used_bits) - 1;
+			delta_ts &= (1ULL << time_ref->adapter->ts_used_bits) - 1;
 
 		time_ref->ts_total += delta_ts;
 	}
-- 
2.51.0

[PATCH 6.1 34/73] ethernet: rvu-af: Remove slash from the driver name

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Petr Malat <oss@malat.biz>

[ Upstream commit b65678cacc030efd53c38c089fb9b741a2ee34c8 ]

Having a slash in the driver name leads to EIO being returned while
reading /sys/module/rvu_af/drivers content.

Remove DRV_STRING as it's not used anywhere.

Fixes: 91c6945ea1f9 ("octeontx2-af: cn10k: Add RPM MAC support")
Signed-off-by: Petr Malat <oss@malat.biz>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20250918152106.1798299-1-oss@malat.biz
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/ethernet/marvell/octeontx2/af/cgx.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/marvell/octeontx2/af/cgx.c b/drivers/net/ethernet/marvell/octeontx2/af/cgx.c
index 254cad45a555f..2fe633be06bf9 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/cgx.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/cgx.c
@@ -21,8 +21,7 @@
 #include "rvu.h"
 #include "lmac_common.h"
 
-#define DRV_NAME	"Marvell-CGX/RPM"
-#define DRV_STRING      "Marvell CGX/RPM Driver"
+#define DRV_NAME	"Marvell-CGX-RPM"
 
 static LIST_HEAD(cgx_list);
 
-- 
2.51.0

[PATCH 6.1 35/73] Bluetooth: hci_sync: Fix hci_resume_advertising_sync

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>

[ Upstream commit 1488af7b8b5f9896ea88ee35aa3301713f72737c ]

hci_resume_advertising_sync is suppose to resume all instance paused by
hci_pause_advertising_sync, this logic is used for procedures are only
allowed when not advertising, but instance 0x00 was not being
re-enabled.

Fixes: ad383c2c65a5 ("Bluetooth: hci_sync: Enable advertising when LL privacy is enabled")
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/bluetooth/hci_sync.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/net/bluetooth/hci_sync.c b/net/bluetooth/hci_sync.c
index a2c3b58db54c2..4c1b2468989a8 100644
--- a/net/bluetooth/hci_sync.c
+++ b/net/bluetooth/hci_sync.c
@@ -2595,6 +2595,13 @@ static int hci_resume_advertising_sync(struct hci_dev *hdev)
 			hci_remove_ext_adv_instance_sync(hdev, adv->instance,
 							 NULL);
 		}
+
+		/* If current advertising instance is set to instance 0x00
+		 * then we need to re-enable it.
+		 */
+		if (!hdev->cur_adv_instance)
+			err = hci_enable_ext_advertising_sync(hdev,
+							      hdev->cur_adv_instance);
 	} else {
 		/* Schedule for most recent instance to be restarted and begin
 		 * the software rotation loop
-- 
2.51.0

[PATCH 6.1 36/73] Bluetooth: hci_event: Fix UAF in hci_acl_create_conn_sync

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>

[ Upstream commit 9e622804d57e2d08f0271200606bd1270f75126f ]

This fixes the following UFA in hci_acl_create_conn_sync where a
connection still pending is command submission (conn->state == BT_OPEN)
maybe freed, also since this also can happen with the likes of
hci_le_create_conn_sync fix it as well:

BUG: KASAN: slab-use-after-free in hci_acl_create_conn_sync+0x5ef/0x790 net/bluetooth/hci_sync.c:6861
Write of size 2 at addr ffff88805ffcc038 by task kworker/u11:2/9541

CPU: 1 UID: 0 PID: 9541 Comm: kworker/u11:2 Not tainted 6.16.0-rc7 #3 PREEMPT(full)
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014
Workqueue: hci3 hci_cmd_sync_work
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:378 [inline]
 print_report+0xca/0x230 mm/kasan/report.c:480
 kasan_report+0x118/0x150 mm/kasan/report.c:593
 hci_acl_create_conn_sync+0x5ef/0x790 net/bluetooth/hci_sync.c:6861
 hci_cmd_sync_work+0x210/0x3a0 net/bluetooth/hci_sync.c:332
 process_one_work kernel/workqueue.c:3238 [inline]
 process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3321
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402
 kthread+0x70e/0x8a0 kernel/kthread.c:464
 ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 home/kwqcheii/source/fuzzing/kernel/kasan/linux-6.16-rc7/arch/x86/entry/entry_64.S:245
 </TASK>

Allocated by task 123736:
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x3e/0x80 mm/kasan/common.c:68
 poison_kmalloc_redzone mm/kasan/common.c:377 [inline]
 __kasan_kmalloc+0x93/0xb0 mm/kasan/common.c:394
 kasan_kmalloc include/linux/kasan.h:260 [inline]
 __kmalloc_cache_noprof+0x230/0x3d0 mm/slub.c:4359
 kmalloc_noprof include/linux/slab.h:905 [inline]
 kzalloc_noprof include/linux/slab.h:1039 [inline]
 __hci_conn_add+0x233/0x1b30 net/bluetooth/hci_conn.c:939
 hci_conn_add_unset net/bluetooth/hci_conn.c:1051 [inline]
 hci_connect_acl+0x16c/0x4e0 net/bluetooth/hci_conn.c:1634
 pair_device+0x418/0xa70 net/bluetooth/mgmt.c:3556
 hci_mgmt_cmd+0x9c9/0xef0 net/bluetooth/hci_sock.c:1719
 hci_sock_sendmsg+0x6ca/0xef0 net/bluetooth/hci_sock.c:1839
 sock_sendmsg_nosec net/socket.c:712 [inline]
 __sock_sendmsg+0x219/0x270 net/socket.c:727
 sock_write_iter+0x258/0x330 net/socket.c:1131
 new_sync_write fs/read_write.c:593 [inline]
 vfs_write+0x54b/0xa90 fs/read_write.c:686
 ksys_write+0x145/0x250 fs/read_write.c:738
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Freed by task 103680:
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x3e/0x80 mm/kasan/common.c:68
 kasan_save_free_info+0x46/0x50 mm/kasan/generic.c:576
 poison_slab_object mm/kasan/common.c:247 [inline]
 __kasan_slab_free+0x62/0x70 mm/kasan/common.c:264
 kasan_slab_free include/linux/kasan.h:233 [inline]
 slab_free_hook mm/slub.c:2381 [inline]
 slab_free mm/slub.c:4643 [inline]
 kfree+0x18e/0x440 mm/slub.c:4842
 device_release+0x9c/0x1c0
 kobject_cleanup lib/kobject.c:689 [inline]
 kobject_release lib/kobject.c:720 [inline]
 kref_put include/linux/kref.h:65 [inline]
 kobject_put+0x22b/0x480 lib/kobject.c:737
 hci_conn_cleanup net/bluetooth/hci_conn.c:175 [inline]
 hci_conn_del+0x8ff/0xcb0 net/bluetooth/hci_conn.c:1173
 hci_conn_complete_evt+0x3c7/0x1040 net/bluetooth/hci_event.c:3199
 hci_event_func net/bluetooth/hci_event.c:7477 [inline]
 hci_event_packet+0x7e0/0x1200 net/bluetooth/hci_event.c:7531
 hci_rx_work+0x46a/0xe80 net/bluetooth/hci_core.c:4070
 process_one_work kernel/workqueue.c:3238 [inline]
 process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3321
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402
 kthread+0x70e/0x8a0 kernel/kthread.c:464
 ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 home/kwqcheii/source/fuzzing/kernel/kasan/linux-6.16-rc7/arch/x86/entry/entry_64.S:245

Last potentially related work creation:
 kasan_save_stack+0x3e/0x60 mm/kasan/common.c:47
 kasan_record_aux_stack+0xbd/0xd0 mm/kasan/generic.c:548
 insert_work+0x3d/0x330 kernel/workqueue.c:2183
 __queue_work+0xbd9/0xfe0 kernel/workqueue.c:2345
 queue_delayed_work_on+0x18b/0x280 kernel/workqueue.c:2561
 pairing_complete+0x1e7/0x2b0 net/bluetooth/mgmt.c:3451
 pairing_complete_cb+0x1ac/0x230 net/bluetooth/mgmt.c:3487
 hci_connect_cfm include/net/bluetooth/hci_core.h:2064 [inline]
 hci_conn_failed+0x24d/0x310 net/bluetooth/hci_conn.c:1275
 hci_conn_complete_evt+0x3c7/0x1040 net/bluetooth/hci_event.c:3199
 hci_event_func net/bluetooth/hci_event.c:7477 [inline]
 hci_event_packet+0x7e0/0x1200 net/bluetooth/hci_event.c:7531
 hci_rx_work+0x46a/0xe80 net/bluetooth/hci_core.c:4070
 process_one_work kernel/workqueue.c:3238 [inline]
 process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3321
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402
 kthread+0x70e/0x8a0 kernel/kthread.c:464
 ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 home/kwqcheii/source/fuzzing/kernel/kasan/linux-6.16-rc7/arch/x86/entry/entry_64.S:245

Fixes: aef2aa4fa98e ("Bluetooth: hci_event: Fix creating hci_conn object on error status")
Reported-by: Junvyyang, Tencent Zhuque Lab <zhuque@tencent.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 include/net/bluetooth/hci_core.h | 21 +++++++++++++++++++++
 net/bluetooth/hci_event.c        | 26 +++++++++++++++++++++++---
 2 files changed, 44 insertions(+), 3 deletions(-)

diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index 97cde23f56ecd..4a1faf11785f4 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -1140,6 +1140,27 @@ static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
 	return NULL;
 }
 
+static inline struct hci_conn *hci_conn_hash_lookup_role(struct hci_dev *hdev,
+							 __u8 type, __u8 role,
+							 bdaddr_t *ba)
+{
+	struct hci_conn_hash *h = &hdev->conn_hash;
+	struct hci_conn  *c;
+
+	rcu_read_lock();
+
+	list_for_each_entry_rcu(c, &h->list, list) {
+		if (c->type == type && c->role == role && !bacmp(&c->dst, ba)) {
+			rcu_read_unlock();
+			return c;
+		}
+	}
+
+	rcu_read_unlock();
+
+	return NULL;
+}
+
 static inline struct hci_conn *hci_conn_hash_lookup_le(struct hci_dev *hdev,
 						       bdaddr_t *ba,
 						       __u8 ba_type)
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index 3d81afcccff8b..a0ce0a1e3258e 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -3125,8 +3125,18 @@ static void hci_conn_complete_evt(struct hci_dev *hdev, void *data,
 
 	hci_dev_lock(hdev);
 
+	/* Check for existing connection:
+	 *
+	 * 1. If it doesn't exist then it must be receiver/slave role.
+	 * 2. If it does exist confirm that it is connecting/BT_CONNECT in case
+	 *    of initiator/master role since there could be a collision where
+	 *    either side is attempting to connect or something like a fuzzing
+	 *    testing is trying to play tricks to destroy the hcon object before
+	 *    it even attempts to connect (e.g. hcon->state == BT_OPEN).
+	 */
 	conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr);
-	if (!conn) {
+	if (!conn ||
+	    (conn->role == HCI_ROLE_MASTER && conn->state != BT_CONNECT)) {
 		/* In case of error status and there is no connection pending
 		 * just unlock as there is nothing to cleanup.
 		 */
@@ -5706,8 +5716,18 @@ static void le_conn_complete_evt(struct hci_dev *hdev, u8 status,
 	 */
 	hci_dev_clear_flag(hdev, HCI_LE_ADV);
 
-	conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, bdaddr);
-	if (!conn) {
+	/* Check for existing connection:
+	 *
+	 * 1. If it doesn't exist then use the role to create a new object.
+	 * 2. If it does exist confirm that it is connecting/BT_CONNECT in case
+	 *    of initiator/master role since there could be a collision where
+	 *    either side is attempting to connect or something like a fuzzing
+	 *    testing is trying to play tricks to destroy the hcon object before
+	 *    it even attempts to connect (e.g. hcon->state == BT_OPEN).
+	 */
+	conn = hci_conn_hash_lookup_role(hdev, LE_LINK, role, bdaddr);
+	if (!conn ||
+	    (conn->role == HCI_ROLE_MASTER && conn->state != BT_CONNECT)) {
 		/* In case of error status and there is no connection pending
 		 * just unlock as there is nothing to cleanup.
 		 */
-- 
2.51.0

[PATCH 6.1 37/73] bnxt_en: correct offset handling for IPv6 destination address

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Alok Tiwari <alok.a.tiwari@oracle.com>

[ Upstream commit 3d3aa9472c6dd0704e9961ed4769caac5b1c8d52 ]

In bnxt_tc_parse_pedit(), the code incorrectly writes IPv6
destination values to the source address field (saddr) when
processing pedit offsets within the destination address range.

This patch corrects the assignment to use daddr instead of saddr,
ensuring that pedit operations on IPv6 destination addresses are
applied correctly.

Fixes: 9b9eb518e338 ("bnxt_en: Add support for NAT(L3/L4 rewrite)")
Signed-off-by: Alok Tiwari <alok.a.tiwari@oracle.com>
Reviewed-by: Somnath Kotur <somnath.kotur@broadcom.com>
Link: https://patch.msgid.link/20250920121157.351921-1-alok.a.tiwari@oracle.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt_tc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_tc.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_tc.c
index 4d6663ff84722..72677d140a888 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_tc.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_tc.c
@@ -244,7 +244,7 @@ bnxt_tc_parse_pedit(struct bnxt *bp, struct bnxt_tc_actions *actions,
 			   offset < offset_of_ip6_daddr + 16) {
 			actions->nat.src_xlate = false;
 			idx = (offset - offset_of_ip6_daddr) / 4;
-			actions->nat.l3.ipv6.saddr.s6_addr32[idx] = htonl(val);
+			actions->nat.l3.ipv6.daddr.s6_addr32[idx] = htonl(val);
 		} else {
 			netdev_err(bp->dev,
 				   "%s: IPv6_hdr: Invalid pedit field\n",
-- 
2.51.0

[PATCH 6.1 38/73] nexthop: Forbid FDB status change while nexthop is in a group

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Ido Schimmel <idosch@nvidia.com>

[ Upstream commit 390b3a300d7872cef9588f003b204398be69ce08 ]

The kernel forbids the creation of non-FDB nexthop groups with FDB
nexthops:

 # ip nexthop add id 1 via 192.0.2.1 fdb
 # ip nexthop add id 2 group 1
 Error: Non FDB nexthop group cannot have fdb nexthops.

And vice versa:

 # ip nexthop add id 3 via 192.0.2.2 dev dummy1
 # ip nexthop add id 4 group 3 fdb
 Error: FDB nexthop group can only have fdb nexthops.

However, as long as no routes are pointing to a non-FDB nexthop group,
the kernel allows changing the type of a nexthop from FDB to non-FDB and
vice versa:

 # ip nexthop add id 5 via 192.0.2.2 dev dummy1
 # ip nexthop add id 6 group 5
 # ip nexthop replace id 5 via 192.0.2.2 fdb
 # echo $?
 0

This configuration is invalid and can result in a NPD [1] since FDB
nexthops are not associated with a nexthop device:

 # ip route add 198.51.100.1/32 nhid 6
 # ping 198.51.100.1

Fix by preventing nexthop FDB status change while the nexthop is in a
group:

 # ip nexthop add id 7 via 192.0.2.2 dev dummy1
 # ip nexthop add id 8 group 7
 # ip nexthop replace id 7 via 192.0.2.2 fdb
 Error: Cannot change nexthop FDB status while in a group.

[1]
BUG: kernel NULL pointer dereference, address: 00000000000003c0
[...]
Oops: Oops: 0000 [#1] SMP
CPU: 6 UID: 0 PID: 367 Comm: ping Not tainted 6.17.0-rc6-virtme-gb65678cacc03 #1 PREEMPT(voluntary)
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.17.0-4.fc41 04/01/2014
RIP: 0010:fib_lookup_good_nhc+0x1e/0x80
[...]
Call Trace:
 <TASK>
 fib_table_lookup+0x541/0x650
 ip_route_output_key_hash_rcu+0x2ea/0x970
 ip_route_output_key_hash+0x55/0x80
 __ip4_datagram_connect+0x250/0x330
 udp_connect+0x2b/0x60
 __sys_connect+0x9c/0xd0
 __x64_sys_connect+0x18/0x20
 do_syscall_64+0xa4/0x2a0
 entry_SYSCALL_64_after_hwframe+0x4b/0x53

Fixes: 38428d68719c ("nexthop: support for fdb ecmp nexthops")
Reported-by: syzbot+6596516dd2b635ba2350@syzkaller.appspotmail.com
Closes: https://lore.kernel.org/netdev/68c9a4d2.050a0220.3c6139.0e63.GAE@google.com/
Tested-by: syzbot+6596516dd2b635ba2350@syzkaller.appspotmail.com
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Link: https://patch.msgid.link/20250921150824.149157-2-idosch@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/ipv4/nexthop.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/net/ipv4/nexthop.c b/net/ipv4/nexthop.c
index bba955d82f723..c0f9d125f401c 100644
--- a/net/ipv4/nexthop.c
+++ b/net/ipv4/nexthop.c
@@ -2113,6 +2113,13 @@ static int replace_nexthop_single(struct net *net, struct nexthop *old,
 		return -EINVAL;
 	}
 
+	if (!list_empty(&old->grp_list) &&
+	    rtnl_dereference(new->nh_info)->fdb_nh !=
+	    rtnl_dereference(old->nh_info)->fdb_nh) {
+		NL_SET_ERR_MSG(extack, "Cannot change nexthop FDB status while in a group");
+		return -EINVAL;
+	}
+
 	err = call_nexthop_notifiers(net, NEXTHOP_EVENT_REPLACE, new, extack);
 	if (err)
 		return err;
-- 
2.51.0

[PATCH 6.1 39/73] selftests: fib_nexthops: Fix creation of non-FDB nexthops

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Ido Schimmel <idosch@nvidia.com>

[ Upstream commit c29913109c70383cdf90b6fc792353e1009f24f5 ]

The test creates non-FDB nexthops without a nexthop device which leads
to the expected failure, but for the wrong reason:

 # ./fib_nexthops.sh -t "ipv6_fdb_grp_fcnal ipv4_fdb_grp_fcnal" -v

 IPv6 fdb groups functional
 --------------------------
 [...]
 COMMAND: ip -netns me-nRsN3E nexthop add id 63 via 2001:db8:91::4
 Error: Device attribute required for non-blackhole and non-fdb nexthops.
 COMMAND: ip -netns me-nRsN3E nexthop add id 64 via 2001:db8:91::5
 Error: Device attribute required for non-blackhole and non-fdb nexthops.
 COMMAND: ip -netns me-nRsN3E nexthop add id 103 group 63/64 fdb
 Error: Invalid nexthop id.
 TEST: Fdb Nexthop group with non-fdb nexthops                       [ OK ]
 [...]

 IPv4 fdb groups functional
 --------------------------
 [...]
 COMMAND: ip -netns me-nRsN3E nexthop add id 14 via 172.16.1.2
 Error: Device attribute required for non-blackhole and non-fdb nexthops.
 COMMAND: ip -netns me-nRsN3E nexthop add id 15 via 172.16.1.3
 Error: Device attribute required for non-blackhole and non-fdb nexthops.
 COMMAND: ip -netns me-nRsN3E nexthop add id 103 group 14/15 fdb
 Error: Invalid nexthop id.
 TEST: Fdb Nexthop group with non-fdb nexthops                       [ OK ]

 COMMAND: ip -netns me-nRsN3E nexthop add id 16 via 172.16.1.2 fdb
 COMMAND: ip -netns me-nRsN3E nexthop add id 17 via 172.16.1.3 fdb
 COMMAND: ip -netns me-nRsN3E nexthop add id 104 group 14/15
 Error: Invalid nexthop id.
 TEST: Non-Fdb Nexthop group with fdb nexthops                       [ OK ]
 [...]
 COMMAND: ip -netns me-0dlhyd ro add 172.16.0.0/22 nhid 15
 Error: Nexthop id does not exist.
 TEST: Route add with fdb nexthop                                    [ OK ]

In addition, as can be seen in the above output, a couple of IPv4 test
cases used the non-FDB nexthops (14 and 15) when they intended to use
the FDB nexthops (16 and 17). These test cases only passed because
failure was expected, but they failed for the wrong reason.

Fix the test to create the non-FDB nexthops with a nexthop device and
adjust the IPv4 test cases to use the FDB nexthops instead of the
non-FDB nexthops.

Output after the fix:

 # ./fib_nexthops.sh -t "ipv6_fdb_grp_fcnal ipv4_fdb_grp_fcnal" -v

 IPv6 fdb groups functional
 --------------------------
 [...]
 COMMAND: ip -netns me-lNzfHP nexthop add id 63 via 2001:db8:91::4 dev veth1
 COMMAND: ip -netns me-lNzfHP nexthop add id 64 via 2001:db8:91::5 dev veth1
 COMMAND: ip -netns me-lNzfHP nexthop add id 103 group 63/64 fdb
 Error: FDB nexthop group can only have fdb nexthops.
 TEST: Fdb Nexthop group with non-fdb nexthops                       [ OK ]
 [...]

 IPv4 fdb groups functional
 --------------------------
 [...]
 COMMAND: ip -netns me-lNzfHP nexthop add id 14 via 172.16.1.2 dev veth1
 COMMAND: ip -netns me-lNzfHP nexthop add id 15 via 172.16.1.3 dev veth1
 COMMAND: ip -netns me-lNzfHP nexthop add id 103 group 14/15 fdb
 Error: FDB nexthop group can only have fdb nexthops.
 TEST: Fdb Nexthop group with non-fdb nexthops                       [ OK ]

 COMMAND: ip -netns me-lNzfHP nexthop add id 16 via 172.16.1.2 fdb
 COMMAND: ip -netns me-lNzfHP nexthop add id 17 via 172.16.1.3 fdb
 COMMAND: ip -netns me-lNzfHP nexthop add id 104 group 16/17
 Error: Non FDB nexthop group cannot have fdb nexthops.
 TEST: Non-Fdb Nexthop group with fdb nexthops                       [ OK ]
 [...]
 COMMAND: ip -netns me-lNzfHP ro add 172.16.0.0/22 nhid 16
 Error: Route cannot point to a fdb nexthop.
 TEST: Route add with fdb nexthop                                    [ OK ]
 [...]
 Tests passed:  30
 Tests failed:   0
 Tests skipped:  0

Fixes: 0534c5489c11 ("selftests: net: add fdb nexthop tests")
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Link: https://patch.msgid.link/20250921150824.149157-3-idosch@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 tools/testing/selftests/net/fib_nexthops.sh | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/tools/testing/selftests/net/fib_nexthops.sh b/tools/testing/selftests/net/fib_nexthops.sh
index df8d90b51867a..543a35e5c9dfe 100755
--- a/tools/testing/selftests/net/fib_nexthops.sh
+++ b/tools/testing/selftests/net/fib_nexthops.sh
@@ -441,8 +441,8 @@ ipv6_fdb_grp_fcnal()
 	log_test $? 0 "Get Fdb nexthop group by id"
 
 	# fdb nexthop group can only contain fdb nexthops
-	run_cmd "$IP nexthop add id 63 via 2001:db8:91::4"
-	run_cmd "$IP nexthop add id 64 via 2001:db8:91::5"
+	run_cmd "$IP nexthop add id 63 via 2001:db8:91::4 dev veth1"
+	run_cmd "$IP nexthop add id 64 via 2001:db8:91::5 dev veth1"
 	run_cmd "$IP nexthop add id 103 group 63/64 fdb"
 	log_test $? 2 "Fdb Nexthop group with non-fdb nexthops"
 
@@ -521,15 +521,15 @@ ipv4_fdb_grp_fcnal()
 	log_test $? 0 "Get Fdb nexthop group by id"
 
 	# fdb nexthop group can only contain fdb nexthops
-	run_cmd "$IP nexthop add id 14 via 172.16.1.2"
-	run_cmd "$IP nexthop add id 15 via 172.16.1.3"
+	run_cmd "$IP nexthop add id 14 via 172.16.1.2 dev veth1"
+	run_cmd "$IP nexthop add id 15 via 172.16.1.3 dev veth1"
 	run_cmd "$IP nexthop add id 103 group 14/15 fdb"
 	log_test $? 2 "Fdb Nexthop group with non-fdb nexthops"
 
 	# Non fdb nexthop group can not contain fdb nexthops
 	run_cmd "$IP nexthop add id 16 via 172.16.1.2 fdb"
 	run_cmd "$IP nexthop add id 17 via 172.16.1.3 fdb"
-	run_cmd "$IP nexthop add id 104 group 14/15"
+	run_cmd "$IP nexthop add id 104 group 16/17"
 	log_test $? 2 "Non-Fdb Nexthop group with fdb nexthops"
 
 	# fdb nexthop cannot have blackhole
@@ -556,7 +556,7 @@ ipv4_fdb_grp_fcnal()
 	run_cmd "$BRIDGE fdb add 02:02:00:00:00:14 dev vx10 nhid 12 self"
 	log_test $? 255 "Fdb mac add with nexthop"
 
-	run_cmd "$IP ro add 172.16.0.0/22 nhid 15"
+	run_cmd "$IP ro add 172.16.0.0/22 nhid 16"
 	log_test $? 2 "Route add with fdb nexthop"
 
 	run_cmd "$IP ro add 172.16.0.0/22 nhid 103"
-- 
2.51.0

[PATCH 6.1 40/73] net: dsa: lantiq_gswip: do also enable or disable cpu port

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Martin Schiller <ms@dev.tdt.de>

[ Upstream commit 86b9ea6412af41914ef6549f85a849c3b987f4f3 ]

Before commit 74be4babe72f ("net: dsa: do not enable or disable non user
ports"), gswip_port_enable/disable() were also executed for the cpu port
in gswip_setup() which disabled the cpu port during initialization.

Let's restore this by removing the dsa_is_user_port checks. Also, let's
clean up the gswip_port_enable() function so that we only have to check
for the cpu port once. The operation reordering done here is safe.

Signed-off-by: Martin Schiller <ms@dev.tdt.de>
Acked-by: Hauke Mehrtens <hauke@hauke-m.de>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Link: https://lore.kernel.org/r/20240611135434.3180973-7-ms@dev.tdt.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Stable-dep-of: c0054b25e2f1 ("net: dsa: lantiq_gswip: move gswip_add_single_port_br() call to port_setup()")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/dsa/lantiq_gswip.c | 24 ++++++++----------------
 1 file changed, 8 insertions(+), 16 deletions(-)

diff --git a/drivers/net/dsa/lantiq_gswip.c b/drivers/net/dsa/lantiq_gswip.c
index 05ecaa007ab18..ee80446802af4 100644
--- a/drivers/net/dsa/lantiq_gswip.c
+++ b/drivers/net/dsa/lantiq_gswip.c
@@ -688,13 +688,18 @@ static int gswip_port_enable(struct dsa_switch *ds, int port,
 	struct gswip_priv *priv = ds->priv;
 	int err;
 
-	if (!dsa_is_user_port(ds, port))
-		return 0;
-
 	if (!dsa_is_cpu_port(ds, port)) {
+		u32 mdio_phy = 0;
+
 		err = gswip_add_single_port_br(priv, port, true);
 		if (err)
 			return err;
+
+		if (phydev)
+			mdio_phy = phydev->mdio.addr & GSWIP_MDIO_PHY_ADDR_MASK;
+
+		gswip_mdio_mask(priv, GSWIP_MDIO_PHY_ADDR_MASK, mdio_phy,
+				GSWIP_MDIO_PHYp(port));
 	}
 
 	/* RMON Counter Enable for port */
@@ -707,16 +712,6 @@ static int gswip_port_enable(struct dsa_switch *ds, int port,
 	gswip_switch_mask(priv, 0, GSWIP_SDMA_PCTRL_EN,
 			  GSWIP_SDMA_PCTRLp(port));
 
-	if (!dsa_is_cpu_port(ds, port)) {
-		u32 mdio_phy = 0;
-
-		if (phydev)
-			mdio_phy = phydev->mdio.addr & GSWIP_MDIO_PHY_ADDR_MASK;
-
-		gswip_mdio_mask(priv, GSWIP_MDIO_PHY_ADDR_MASK, mdio_phy,
-				GSWIP_MDIO_PHYp(port));
-	}
-
 	return 0;
 }
 
@@ -724,9 +719,6 @@ static void gswip_port_disable(struct dsa_switch *ds, int port)
 {
 	struct gswip_priv *priv = ds->priv;
 
-	if (!dsa_is_user_port(ds, port))
-		return;
-
 	gswip_switch_mask(priv, GSWIP_FDMA_PCTRL_EN, 0,
 			  GSWIP_FDMA_PCTRLp(port));
 	gswip_switch_mask(priv, GSWIP_SDMA_PCTRL_EN, 0,
-- 
2.51.0

[PATCH 6.1 41/73] net: dsa: lantiq_gswip: move gswip_add_single_port_br() call to port_setup()

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Vladimir Oltean <vladimir.oltean@nxp.com>

[ Upstream commit c0054b25e2f1045f47b4954cf13a539e5e6047df ]

A port added to a "single port bridge" operates as standalone, and this
is mutually exclusive to being part of a Linux bridge. In fact,
gswip_port_bridge_join() calls gswip_add_single_port_br() with
add=false, i.e. removes the port from the "single port bridge" to enable
autonomous forwarding.

The blamed commit seems to have incorrectly thought that ds->ops->port_enable()
is called one time per port, during the setup phase of the switch.

However, it is actually called during the ndo_open() implementation of
DSA user ports, which is to say that this sequence of events:

1. ip link set swp0 down
2. ip link add br0 type bridge
3. ip link set swp0 master br0
4. ip link set swp0 up

would cause swp0 to join back the "single port bridge" which step 3 had
just removed it from.

The correct DSA hook for one-time actions per port at switch init time
is ds->ops->port_setup(). This is what seems to match the coder's
intention; also see the comment at the beginning of the file:

 * At the initialization the driver allocates one bridge table entry for
   ~~~~~~~~~~~~~~~~~~~~~
 * each switch port which is used when the port is used without an
 * explicit bridge.

Fixes: 8206e0ce96b3 ("net: dsa: lantiq: Add VLAN unaware bridge offloading")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Link: https://patch.msgid.link/20250918072142.894692-2-vladimir.oltean@nxp.com
Tested-by: Daniel Golle <daniel@makrotopia.org>
Reviewed-by: Daniel Golle <daniel@makrotopia.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/dsa/lantiq_gswip.c | 18 ++++++++++++++----
 1 file changed, 14 insertions(+), 4 deletions(-)

diff --git a/drivers/net/dsa/lantiq_gswip.c b/drivers/net/dsa/lantiq_gswip.c
index ee80446802af4..dd01470cd5dde 100644
--- a/drivers/net/dsa/lantiq_gswip.c
+++ b/drivers/net/dsa/lantiq_gswip.c
@@ -682,18 +682,27 @@ static int gswip_add_single_port_br(struct gswip_priv *priv, int port, bool add)
 	return 0;
 }
 
-static int gswip_port_enable(struct dsa_switch *ds, int port,
-			     struct phy_device *phydev)
+static int gswip_port_setup(struct dsa_switch *ds, int port)
 {
 	struct gswip_priv *priv = ds->priv;
 	int err;
 
 	if (!dsa_is_cpu_port(ds, port)) {
-		u32 mdio_phy = 0;
-
 		err = gswip_add_single_port_br(priv, port, true);
 		if (err)
 			return err;
+	}
+
+	return 0;
+}
+
+static int gswip_port_enable(struct dsa_switch *ds, int port,
+			     struct phy_device *phydev)
+{
+	struct gswip_priv *priv = ds->priv;
+
+	if (!dsa_is_cpu_port(ds, port)) {
+		u32 mdio_phy = 0;
 
 		if (phydev)
 			mdio_phy = phydev->mdio.addr & GSWIP_MDIO_PHY_ADDR_MASK;
@@ -1813,6 +1822,7 @@ static int gswip_get_sset_count(struct dsa_switch *ds, int port, int sset)
 static const struct dsa_switch_ops gswip_xrx200_switch_ops = {
 	.get_tag_protocol	= gswip_get_tag_protocol,
 	.setup			= gswip_setup,
+	.port_setup		= gswip_port_setup,
 	.port_enable		= gswip_port_enable,
 	.port_disable		= gswip_port_disable,
 	.port_bridge_join	= gswip_port_bridge_join,
-- 
2.51.0

[PATCH 6.1 42/73] net: dsa: lantiq_gswip: suppress -EINVAL errors for bridge FDB entries added to the CPU port

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Vladimir Oltean <vladimir.oltean@nxp.com>

[ Upstream commit 987afe147965ef7a8e7d144ffef0d70af14bb1d4 ]

The blamed commit and others in that patch set started the trend
of reusing existing DSA driver API for a new purpose: calling
ds->ops->port_fdb_add() on the CPU port.

The lantiq_gswip driver was not prepared to handle that, as can be seen
from the many errors that Daniel presents in the logs:

[  174.050000] gswip 1e108000.switch: port 2 failed to add fa:aa:72:f4:8b:1e vid 1 to fdb: -22
[  174.060000] gswip 1e108000.switch lan2: entered promiscuous mode
[  174.070000] gswip 1e108000.switch: port 2 failed to add 00:01:02:03:04:02 vid 0 to fdb: -22
[  174.090000] gswip 1e108000.switch: port 2 failed to add 00:01:02:03:04:02 vid 1 to fdb: -22
[  174.090000] gswip 1e108000.switch: port 2 failed to delete fa:aa:72:f4:8b:1e vid 1 from fdb: -2

The errors are because gswip_port_fdb() wants to get a handle to the
bridge that originated these FDB events, to associate it with a FID.
Absolutely honourable purpose, however this only works for user ports.

To get the bridge that generated an FDB entry for the CPU port, one
would need to look at the db.bridge.dev argument. But this was
introduced in commit c26933639b54 ("net: dsa: request drivers to perform
FDB isolation"), first appeared in v5.18, and when the blamed commit was
introduced in v5.14, no such API existed.

So the core DSA feature was introduced way too soon for lantiq_gswip.
Not acting on these host FDB entries and suppressing any errors has no
other negative effect, and practically returns us to not supporting the
host filtering feature at all - peacefully, this time.

Fixes: 10fae4ac89ce ("net: dsa: include bridge addresses which are local in the host fdb list")
Reported-by: Daniel Golle <daniel@makrotopia.org>
Closes: https://lore.kernel.org/netdev/aJfNMLNoi1VOsPrN@pidgin.makrotopia.org/
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Link: https://patch.msgid.link/20250918072142.894692-3-vladimir.oltean@nxp.com
Tested-by: Daniel Golle <daniel@makrotopia.org>
Reviewed-by: Daniel Golle <daniel@makrotopia.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/dsa/lantiq_gswip.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/dsa/lantiq_gswip.c b/drivers/net/dsa/lantiq_gswip.c
index dd01470cd5dde..d899ebb902a0c 100644
--- a/drivers/net/dsa/lantiq_gswip.c
+++ b/drivers/net/dsa/lantiq_gswip.c
@@ -1366,8 +1366,9 @@ static int gswip_port_fdb(struct dsa_switch *ds, int port,
 	int i;
 	int err;
 
+	/* Operation not supported on the CPU port, don't throw errors */
 	if (!bridge)
-		return -EINVAL;
+		return 0;
 
 	for (i = max_ports; i < ARRAY_SIZE(priv->vlans); i++) {
 		if (priv->vlans[i].bridge == bridge) {
-- 
2.51.0

[PATCH 6.1 43/73] octeontx2-pf: Fix potential use after free in otx2_tc_add_flow()

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Dan Carpenter <dan.carpenter@linaro.org>

[ Upstream commit d9c70e93ec5988ab07ad2a92d9f9d12867f02c56 ]

This code calls kfree_rcu(new_node, rcu) and then dereferences "new_node"
and then dereferences it on the next line.  Two lines later, we take
a mutex so I don't think this is an RCU safe region.  Re-order it to do
the dereferences before queuing up the free.

Fixes: 68fbff68dbea ("octeontx2-pf: Add police action for TC flower")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: Vadim Fedorenko <vadim.fedorenko@linux.dev>
Link: https://patch.msgid.link/aNKCL1jKwK8GRJHh@stanley.mountain
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/ethernet/marvell/octeontx2/nic/otx2_tc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_tc.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_tc.c
index bb77ab7ddfefd..6833cbf853445 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_tc.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_tc.c
@@ -1039,7 +1039,6 @@ static int otx2_tc_add_flow(struct otx2_nic *nic,
 
 free_leaf:
 	otx2_tc_del_from_flow_list(flow_cfg, new_node);
-	kfree_rcu(new_node, rcu);
 	if (new_node->is_act_police) {
 		mutex_lock(&nic->mbox.lock);
 
@@ -1059,6 +1058,7 @@ static int otx2_tc_add_flow(struct otx2_nic *nic,
 
 		mutex_unlock(&nic->mbox.lock);
 	}
+	kfree_rcu(new_node, rcu);
 
 	return rc;
 }
-- 
2.51.0

[PATCH 6.1 44/73] drm/gma500: Fix null dereference in hdmi teardown

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Zabelin Nikita <n.zabelin@mt-integration.ru>

[ Upstream commit 352e66900cde63f3dadb142364d3c35170bbaaff ]

pci_set_drvdata sets the value of pdev->driver_data to NULL,
after which the driver_data obtained from the same dev is
dereferenced in oaktrail_hdmi_i2c_exit, and the i2c_dev is
extracted from it. To prevent this, swap these calls.

Found by Linux Verification Center (linuxtesting.org) with Svacer.

Fixes: 1b082ccf5901 ("gma500: Add Oaktrail support")
Signed-off-by: Zabelin Nikita <n.zabelin@mt-integration.ru>
Signed-off-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Link: https://lore.kernel.org/r/20250918150703.2562604-1-n.zabelin@mt-integration.ru
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/gpu/drm/gma500/oaktrail_hdmi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/gma500/oaktrail_hdmi.c b/drivers/gpu/drm/gma500/oaktrail_hdmi.c
index 95b7cb099e638..9c7d9584aac7f 100644
--- a/drivers/gpu/drm/gma500/oaktrail_hdmi.c
+++ b/drivers/gpu/drm/gma500/oaktrail_hdmi.c
@@ -724,8 +724,8 @@ void oaktrail_hdmi_teardown(struct drm_device *dev)
 
 	if (hdmi_dev) {
 		pdev = hdmi_dev->dev;
-		pci_set_drvdata(pdev, NULL);
 		oaktrail_hdmi_i2c_exit(pdev);
+		pci_set_drvdata(pdev, NULL);
 		iounmap(hdmi_dev->regs);
 		kfree(hdmi_dev);
 		pci_dev_put(pdev);
-- 
2.51.0

[PATCH 6.1 45/73] futex: Prevent use-after-free during requeue-PI

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

[ Upstream commit b549113738e8c751b613118032a724b772aa83f2 ]

syzbot managed to trigger the following race:

   T1                               T2

 futex_wait_requeue_pi()
   futex_do_wait()
     schedule()
                               futex_requeue()
                                 futex_proxy_trylock_atomic()
                                   futex_requeue_pi_prepare()
                                   requeue_pi_wake_futex()
                                     futex_requeue_pi_complete()
                                      /* preempt */

         * timeout/ signal wakes T1 *

   futex_requeue_pi_wakeup_sync() // Q_REQUEUE_PI_LOCKED
   futex_hash_put()
  // back to userland, on stack futex_q is garbage

                                      /* back */
                                     wake_up_state(q->task, TASK_NORMAL);

In this scenario futex_wait_requeue_pi() is able to leave without using
futex_q::lock_ptr for synchronization.

This can be prevented by reading futex_q::task before updating the
futex_q::requeue_state. A reference on the task_struct is not needed
because requeue_pi_wake_futex() is invoked with a spinlock_t held which
implies a RCU read section.

Even if T1 terminates immediately after, the task_struct will remain valid
during T2's wake_up_state().  A READ_ONCE on futex_q::task before
futex_requeue_pi_complete() is enough because it ensures that the variable
is read before the state is updated.

Read futex_q::task before updating the requeue state, use it for the
following wakeup.

Fixes: 07d91ef510fb1 ("futex: Prevent requeue_pi() lock nesting issue on RT")
Reported-by: syzbot+034246a838a10d181e78@syzkaller.appspotmail.com
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Closes: https://lore.kernel.org/all/68b75989.050a0220.3db4df.01dd.GAE@google.com/
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 kernel/futex/requeue.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/kernel/futex/requeue.c b/kernel/futex/requeue.c
index cba8b1a6a4cc2..7e43839ca7b05 100644
--- a/kernel/futex/requeue.c
+++ b/kernel/futex/requeue.c
@@ -223,18 +223,20 @@ static inline
 void requeue_pi_wake_futex(struct futex_q *q, union futex_key *key,
 			   struct futex_hash_bucket *hb)
 {
-	q->key = *key;
+	struct task_struct *task;
 
+	q->key = *key;
 	__futex_unqueue(q);
 
 	WARN_ON(!q->rt_waiter);
 	q->rt_waiter = NULL;
 
 	q->lock_ptr = &hb->lock;
+	task = READ_ONCE(q->task);
 
 	/* Signal locked state to the waiter */
 	futex_requeue_pi_complete(q, 1);
-	wake_up_state(q->task, TASK_NORMAL);
+	wake_up_state(task, TASK_NORMAL);
 }
 
 /**
-- 
2.51.0

[PATCH 6.1 46/73] i40e: fix idx validation in i40e_validate_queue_map

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Lukasz Czapnik <lukasz.czapnik@intel.com>

commit aa68d3c3ac8d1dcec40d52ae27e39f6d32207009 upstream.

Ensure idx is within range of active/initialized TCs when iterating over
vf->ch[idx] in i40e_validate_queue_map().

Fixes: c27eac48160d ("i40e: Enable ADq and create queue channel/s on VF")
Cc: stable@vger.kernel.org
Signed-off-by: Lukasz Czapnik <lukasz.czapnik@intel.com>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Signed-off-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Tested-by: Kamakshi Nellore <nellorex.kamakshi@intel.com> (A Contingent Worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c |    6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

--- a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
@@ -2457,8 +2457,10 @@ static int i40e_validate_queue_map(struc
 	u16 vsi_queue_id, queue_id;
 
 	for_each_set_bit(vsi_queue_id, &queuemap, I40E_MAX_VSI_QP) {
-		if (vf->adq_enabled) {
-			vsi_id = vf->ch[vsi_queue_id / I40E_MAX_VF_VSI].vsi_id;
+		u16 idx = vsi_queue_id / I40E_MAX_VF_VSI;
+
+		if (vf->adq_enabled && idx < vf->num_tc) {
+			vsi_id = vf->ch[idx].vsi_id;
 			queue_id = (vsi_queue_id % I40E_DEFAULT_QUEUES_PER_VF);
 		} else {
 			queue_id = vsi_queue_id;

[PATCH 6.1 47/73] i40e: fix input validation logic for action_meta

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Lukasz Czapnik <lukasz.czapnik@intel.com>

commit 9739d5830497812b0bdeaee356ddefbe60830b88 upstream.

Fix condition to check 'greater or equal' to prevent OOB dereference.

Fixes: e284fc280473 ("i40e: Add and delete cloud filter")
Cc: stable@vger.kernel.org
Signed-off-by: Lukasz Czapnik <lukasz.czapnik@intel.com>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Signed-off-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Tested-by: Rafal Romanowski <rafal.romanowski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
@@ -3525,7 +3525,7 @@ static int i40e_validate_cloud_filter(st
 
 	/* action_meta is TC number here to which the filter is applied */
 	if (!tc_filter->action_meta ||
-	    tc_filter->action_meta > vf->num_tc) {
+	    tc_filter->action_meta >= vf->num_tc) {
 		dev_info(&pf->pdev->dev, "VF %d: Invalid TC number %u\n",
 			 vf->vf_id, tc_filter->action_meta);
 		goto err;

[PATCH 6.1 48/73] i40e: add max boundary check for VF filters

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Lukasz Czapnik <lukasz.czapnik@intel.com>

commit cb79fa7118c150c3c76a327894bb2eb878c02619 upstream.

There is no check for max filters that VF can request. Add it.

Fixes: e284fc280473 ("i40e: Add and delete cloud filter")
Cc: stable@vger.kernel.org
Signed-off-by: Lukasz Czapnik <lukasz.czapnik@intel.com>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Signed-off-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Tested-by: Rafal Romanowski <rafal.romanowski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c |   10 ++++++++++
 1 file changed, 10 insertions(+)

--- a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
@@ -3823,6 +3823,8 @@ err:
 				       aq_ret);
 }
 
+#define I40E_MAX_VF_CLOUD_FILTER 0xFF00
+
 /**
  * i40e_vc_add_cloud_filter
  * @vf: pointer to the VF info
@@ -3862,6 +3864,14 @@ static int i40e_vc_add_cloud_filter(stru
 		goto err_out;
 	}
 
+	if (vf->num_cloud_filters >= I40E_MAX_VF_CLOUD_FILTER) {
+		dev_warn(&pf->pdev->dev,
+			 "VF %d: Max number of filters reached, can't apply cloud filter\n",
+			 vf->vf_id);
+		aq_ret = -ENOSPC;
+		goto err_out;
+	}
+
 	cfilter = kzalloc(sizeof(*cfilter), GFP_KERNEL);
 	if (!cfilter) {
 		aq_ret = -ENOMEM;

[PATCH 6.1 49/73] i40e: add mask to apply valid bits for itr_idx

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Lukasz Czapnik <lukasz.czapnik@intel.com>

commit eac04428abe9f9cb203ffae4600791ea1d24eb18 upstream.

The ITR index (itr_idx) is only 2 bits wide. When constructing the
register value for QINT_RQCTL, all fields are ORed together. Without
masking, higher bits from itr_idx may overwrite adjacent fields in the
register.

Apply I40E_QINT_RQCTL_ITR_INDX_MASK to ensure only the intended bits are
set.

Fixes: 5c3c48ac6bf5 ("i40e: implement virtual device interface")
Cc: stable@vger.kernel.org
Signed-off-by: Lukasz Czapnik <lukasz.czapnik@intel.com>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Signed-off-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Tested-by: Rafal Romanowski <rafal.romanowski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
@@ -446,7 +446,7 @@ static void i40e_config_irq_link_list(st
 		    (qtype << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT) |
 		    (pf_queue_id << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT) |
 		    BIT(I40E_QINT_RQCTL_CAUSE_ENA_SHIFT) |
-		    (itr_idx << I40E_QINT_RQCTL_ITR_INDX_SHIFT);
+		    FIELD_PREP(I40E_QINT_RQCTL_ITR_INDX_MASK, itr_idx);
 		wr32(hw, reg_idx, reg);
 	}
 

[PATCH 6.1 50/73] i40e: improve VF MAC filters accounting

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Lukasz Czapnik <lukasz.czapnik@intel.com>

commit b99dd77076bd3fddac6f7f1cbfa081c38fde17f5 upstream.

When adding new VM MAC, driver checks only *active* filters in
vsi->mac_filter_hash. Each MAC, even in non-active state is using resources.

To determine number of MACs VM uses, count VSI filters in *any* state.

Add i40e_count_all_filters() to simply count all filters, and rename
i40e_count_filters() to i40e_count_active_filters() to avoid ambiguity.

Fixes: cfb1d572c986 ("i40e: Add ensurance of MacVlan resources for every trusted VF")
Cc: stable@vger.kernel.org
Signed-off-by: Lukasz Czapnik <lukasz.czapnik@intel.com>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Signed-off-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Tested-by: Rafal Romanowski <rafal.romanowski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/net/ethernet/intel/i40e/i40e.h             |    3 
 drivers/net/ethernet/intel/i40e/i40e_main.c        |   26 +++++++-
 drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c |   65 ++++++++-------------
 3 files changed, 50 insertions(+), 44 deletions(-)

--- a/drivers/net/ethernet/intel/i40e/i40e.h
+++ b/drivers/net/ethernet/intel/i40e/i40e.h
@@ -1255,7 +1255,8 @@ struct i40e_mac_filter *i40e_add_mac_fil
 					    const u8 *macaddr);
 int i40e_del_mac_filter(struct i40e_vsi *vsi, const u8 *macaddr);
 bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi);
-int i40e_count_filters(struct i40e_vsi *vsi);
+int i40e_count_all_filters(struct i40e_vsi *vsi);
+int i40e_count_active_filters(struct i40e_vsi *vsi);
 struct i40e_mac_filter *i40e_find_mac(struct i40e_vsi *vsi, const u8 *macaddr);
 void i40e_vlan_stripping_enable(struct i40e_vsi *vsi);
 static inline bool i40e_is_sw_dcb(struct i40e_pf *pf)
--- a/drivers/net/ethernet/intel/i40e/i40e_main.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_main.c
@@ -1233,12 +1233,30 @@ void i40e_update_stats(struct i40e_vsi *
 }
 
 /**
- * i40e_count_filters - counts VSI mac filters
+ * i40e_count_all_filters - counts VSI MAC filters
  * @vsi: the VSI to be searched
  *
- * Returns count of mac filters
- **/
-int i40e_count_filters(struct i40e_vsi *vsi)
+ * Return: count of MAC filters in any state.
+ */
+int i40e_count_all_filters(struct i40e_vsi *vsi)
+{
+	struct i40e_mac_filter *f;
+	struct hlist_node *h;
+	int bkt, cnt = 0;
+
+	hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist)
+		cnt++;
+
+	return cnt;
+}
+
+/**
+ * i40e_count_active_filters - counts VSI MAC filters
+ * @vsi: the VSI to be searched
+ *
+ * Return: count of active MAC filters.
+ */
+int i40e_count_active_filters(struct i40e_vsi *vsi)
 {
 	struct i40e_mac_filter *f;
 	struct hlist_node *h;
--- a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
@@ -2848,24 +2848,6 @@ error_param:
 				      (u8 *)&stats, sizeof(stats));
 }
 
-/**
- * i40e_can_vf_change_mac
- * @vf: pointer to the VF info
- *
- * Return true if the VF is allowed to change its MAC filters, false otherwise
- */
-static bool i40e_can_vf_change_mac(struct i40e_vf *vf)
-{
-	/* If the VF MAC address has been set administratively (via the
-	 * ndo_set_vf_mac command), then deny permission to the VF to
-	 * add/delete unicast MAC addresses, unless the VF is trusted
-	 */
-	if (vf->pf_set_mac && !vf->trusted)
-		return false;
-
-	return true;
-}
-
 #define I40E_MAX_MACVLAN_PER_HW 3072
 #define I40E_MAX_MACVLAN_PER_PF(num_ports) (I40E_MAX_MACVLAN_PER_HW /	\
 	(num_ports))
@@ -2904,8 +2886,10 @@ static inline int i40e_check_vf_permissi
 	struct i40e_pf *pf = vf->pf;
 	struct i40e_vsi *vsi = pf->vsi[vf->lan_vsi_idx];
 	struct i40e_hw *hw = &pf->hw;
-	int mac2add_cnt = 0;
-	int i;
+	int i, mac_add_max, mac_add_cnt = 0;
+	bool vf_trusted;
+
+	vf_trusted = test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps);
 
 	for (i = 0; i < al->num_elements; i++) {
 		struct i40e_mac_filter *f;
@@ -2925,9 +2909,8 @@ static inline int i40e_check_vf_permissi
 		 * The VF may request to set the MAC address filter already
 		 * assigned to it so do not return an error in that case.
 		 */
-		if (!i40e_can_vf_change_mac(vf) &&
-		    !is_multicast_ether_addr(addr) &&
-		    !ether_addr_equal(addr, vf->default_lan_addr.addr)) {
+		if (!vf_trusted && !is_multicast_ether_addr(addr) &&
+		    vf->pf_set_mac && !ether_addr_equal(addr, vf->default_lan_addr.addr)) {
 			dev_err(&pf->pdev->dev,
 				"VF attempting to override administratively set MAC address, bring down and up the VF interface to resume normal operation\n");
 			return -EPERM;
@@ -2936,29 +2919,33 @@ static inline int i40e_check_vf_permissi
 		/*count filters that really will be added*/
 		f = i40e_find_mac(vsi, addr);
 		if (!f)
-			++mac2add_cnt;
+			++mac_add_cnt;
 	}
 
 	/* If this VF is not privileged, then we can't add more than a limited
-	 * number of addresses. Check to make sure that the additions do not
-	 * push us over the limit.
-	 */
-	if (!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) {
-		if ((i40e_count_filters(vsi) + mac2add_cnt) >
-		    I40E_VC_MAX_MAC_ADDR_PER_VF) {
-			dev_err(&pf->pdev->dev,
-				"Cannot add more MAC addresses, VF is not trusted, switch the VF to trusted to add more functionality\n");
-			return -EPERM;
-		}
-	/* If this VF is trusted, it can use more resources than untrusted.
+	 * number of addresses.
+	 *
+	 * If this VF is trusted, it can use more resources than untrusted.
 	 * However to ensure that every trusted VF has appropriate number of
 	 * resources, divide whole pool of resources per port and then across
 	 * all VFs.
 	 */
-	} else {
-		if ((i40e_count_filters(vsi) + mac2add_cnt) >
-		    I40E_VC_MAX_MACVLAN_PER_TRUSTED_VF(pf->num_alloc_vfs,
-						       hw->num_ports)) {
+	if (!vf_trusted)
+		mac_add_max = I40E_VC_MAX_MAC_ADDR_PER_VF;
+	else
+		mac_add_max = I40E_VC_MAX_MACVLAN_PER_TRUSTED_VF(pf->num_alloc_vfs, hw->num_ports);
+
+	/* VF can replace all its filters in one step, in this case mac_add_max
+	 * will be added as active and another mac_add_max will be in
+	 * a to-be-removed state. Account for that.
+	 */
+	if ((i40e_count_active_filters(vsi) + mac_add_cnt) > mac_add_max ||
+	    (i40e_count_all_filters(vsi) + mac_add_cnt) > 2 * mac_add_max) {
+		if (!vf_trusted) {
+			dev_err(&pf->pdev->dev,
+				"Cannot add more MAC addresses, VF is not trusted, switch the VF to trusted to add more functionality\n");
+			return -EPERM;
+		} else {
 			dev_err(&pf->pdev->dev,
 				"Cannot add more MAC addresses, trusted VF exhausted it's resources\n");
 			return -EPERM;

[PATCH 6.1 51/73] crypto: af_alg - Fix incorrect boolean values in af_alg_ctx

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Eric Biggers <ebiggers@kernel.org>

commit d0ca0df179c4b21e2a6c4a4fb637aa8fa14575cb upstream.

Commit 1b34cbbf4f01 ("crypto: af_alg - Disallow concurrent writes in
af_alg_sendmsg") changed some fields from bool to 1-bit bitfields of
type u32.

However, some assignments to these fields, specifically 'more' and
'merge', assign values greater than 1.  These relied on C's implicit
conversion to bool, such that zero becomes false and nonzero becomes
true.

With a 1-bit bitfields of type u32 instead, mod 2 of the value is taken
instead, resulting in 0 being assigned in some cases when 1 was intended.

Fix this by restoring the bool type.

Fixes: 1b34cbbf4f01 ("crypto: af_alg - Disallow concurrent writes in af_alg_sendmsg")
Cc: stable@vger.kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 include/crypto/if_alg.h |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/include/crypto/if_alg.h
+++ b/include/crypto/if_alg.h
@@ -152,7 +152,7 @@ struct af_alg_ctx {
 	size_t used;
 	atomic_t rcvused;
 
-	u32		more:1,
+	bool		more:1,
 			merge:1,
 			enc:1,
 			write:1,

[PATCH 6.1 52/73] tracing: dynevent: Add a missing lockdown check on dynevent

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Masami Hiramatsu (Google) <mhiramat@kernel.org>

commit 456c32e3c4316654f95f9d49c12cbecfb77d5660 upstream.

Since dynamic_events interface on tracefs is compatible with
kprobe_events and uprobe_events, it should also check the lockdown
status and reject if it is set.

Link: https://lore.kernel.org/all/175824455687.45175.3734166065458520748.stgit@devnote2/

Fixes: 17911ff38aa5 ("tracing: Add locked_down checks to the open calls of files created for tracefs")
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 kernel/trace/trace_dynevent.c |    4 ++++
 1 file changed, 4 insertions(+)

--- a/kernel/trace/trace_dynevent.c
+++ b/kernel/trace/trace_dynevent.c
@@ -239,6 +239,10 @@ static int dyn_event_open(struct inode *
 {
 	int ret;
 
+	ret = security_locked_down(LOCKDOWN_TRACEFS);
+	if (ret)
+		return ret;
+
 	ret = tracing_check_open_get_tr(NULL);
 	if (ret)
 		return ret;

[PATCH 6.1 53/73] afs: Fix potential null pointer dereference in afs_put_server

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Zhen Ni <zhen.ni@easystack.cn>

commit 9158c6bb245113d4966df9b2ba602197a379412e upstream.

afs_put_server() accessed server->debug_id before the NULL check, which
could lead to a null pointer dereference. Move the debug_id assignment,
ensuring we never dereference a NULL server pointer.

Fixes: 2757a4dc1849 ("afs: Fix access after dec in put functions")
Cc: stable@vger.kernel.org
Signed-off-by: Zhen Ni <zhen.ni@easystack.cn>
Acked-by: David Howells <dhowells@redhat.com>
Reviewed-by: Jeffrey Altman <jaltman@auristor.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 fs/afs/server.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/fs/afs/server.c
+++ b/fs/afs/server.c
@@ -401,13 +401,14 @@ struct afs_server *afs_use_server(struct
 void afs_put_server(struct afs_net *net, struct afs_server *server,
 		    enum afs_server_trace reason)
 {
-	unsigned int a, debug_id = server->debug_id;
+	unsigned int a, debug_id;
 	bool zero;
 	int r;
 
 	if (!server)
 		return;
 
+	debug_id = server->debug_id;
 	a = atomic_read(&server->active);
 	zero = __refcount_dec_and_test(&server->ref, &r);
 	trace_afs_server(debug_id, r - 1, a, reason);

[PATCH 6.1 54/73] mm/hugetlb: fix folio is still mapped when deleted

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Jinjiang Tu <tujinjiang@huawei.com>

commit 7b7387650dcf2881fd8bb55bcf3c8bd6c9542dd7 upstream.

Migration may be raced with fallocating hole.  remove_inode_single_folio
will unmap the folio if the folio is still mapped.  However, it's called
without folio lock.  If the folio is migrated and the mapped pte has been
converted to migration entry, folio_mapped() returns false, and won't
unmap it.  Due to extra refcount held by remove_inode_single_folio,
migration fails, restores migration entry to normal pte, and the folio is
mapped again.  As a result, we triggered BUG in filemap_unaccount_folio.

The log is as follows:
 BUG: Bad page cache in process hugetlb  pfn:156c00
 page: refcount:515 mapcount:0 mapping:0000000099fef6e1 index:0x0 pfn:0x156c00
 head: order:9 mapcount:1 entire_mapcount:1 nr_pages_mapped:0 pincount:0
 aops:hugetlbfs_aops ino:dcc dentry name(?):"my_hugepage_file"
 flags: 0x17ffffc00000c1(locked|waiters|head|node=0|zone=2|lastcpupid=0x1fffff)
 page_type: f4(hugetlb)
 page dumped because: still mapped when deleted
 CPU: 1 UID: 0 PID: 395 Comm: hugetlb Not tainted 6.17.0-rc5-00044-g7aac71907bde-dirty #484 NONE
 Hardware name: QEMU Ubuntu 24.04 PC (i440FX + PIIX, 1996), BIOS 0.0.0 02/06/2015
 Call Trace:
  <TASK>
  dump_stack_lvl+0x4f/0x70
  filemap_unaccount_folio+0xc4/0x1c0
  __filemap_remove_folio+0x38/0x1c0
  filemap_remove_folio+0x41/0xd0
  remove_inode_hugepages+0x142/0x250
  hugetlbfs_fallocate+0x471/0x5a0
  vfs_fallocate+0x149/0x380

Hold folio lock before checking if the folio is mapped to avold race with
migration.

Link: https://lkml.kernel.org/r/20250912074139.3575005-1-tujinjiang@huawei.com
Fixes: 4aae8d1c051e ("mm/hugetlbfs: unmap pages if page fault raced with hole punch")
Signed-off-by: Jinjiang Tu <tujinjiang@huawei.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Kefeng Wang <wangkefeng.wang@huawei.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 fs/hugetlbfs/inode.c |   10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

--- a/fs/hugetlbfs/inode.c
+++ b/fs/hugetlbfs/inode.c
@@ -576,14 +576,16 @@ static bool remove_inode_single_folio(st
 
 	/*
 	 * If folio is mapped, it was faulted in after being
-	 * unmapped in caller.  Unmap (again) while holding
-	 * the fault mutex.  The mutex will prevent faults
-	 * until we finish removing the folio.
+	 * unmapped in caller or hugetlb_vmdelete_list() skips
+	 * unmapping it due to fail to grab lock.  Unmap (again)
+	 * while holding the fault mutex.  The mutex will prevent
+	 * faults until we finish removing the folio.  Hold folio
+	 * lock to guarantee no concurrent migration.
 	 */
+	folio_lock(folio);
 	if (unlikely(folio_mapped(folio)))
 		hugetlb_unmap_file_folio(h, mapping, folio, index);
 
-	folio_lock(folio);
 	/*
 	 * We must remove the folio from page cache before removing
 	 * the region/ reserve map (hugetlb_unreserve_pages).  In

[PATCH 6.1 55/73] fbcon: fix integer overflow in fbcon_do_set_font

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Samasth Norway Ananda <samasth.norway.ananda@oracle.com>

commit 1a194e6c8e1ee745e914b0b7f50fa86c89ed13fe upstream.

Fix integer overflow vulnerabilities in fbcon_do_set_font() where font
size calculations could overflow when handling user-controlled font
parameters.

The vulnerabilities occur when:
1. CALC_FONTSZ(h, pitch, charcount) performs h * pith * charcount
   multiplication with user-controlled values that can overflow.
2. FONT_EXTRA_WORDS * sizeof(int) + size addition can also overflow
3. This results in smaller allocations than expected, leading to buffer
   overflows during font data copying.

Add explicit overflow checking using check_mul_overflow() and
check_add_overflow() kernel helpers to safety validate all size
calculations before allocation.

Signed-off-by: Samasth Norway Ananda <samasth.norway.ananda@oracle.com>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Fixes: 39b3cffb8cf3 ("fbcon: prevent user font height or width change from causing potential out-of-bounds access")
Cc: George Kennedy <george.kennedy@oracle.com>
Cc: stable <stable@vger.kernel.org>
Cc: syzbot+38a3699c7eaf165b97a6@syzkaller.appspotmail.com
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Simona Vetter <simona@ffwll.ch>
Cc: Helge Deller <deller@gmx.de>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: "Ville Syrjälä" <ville.syrjala@linux.intel.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Qianqiang Liu <qianqiang.liu@163.com>
Cc: Shixiong Ou <oushixiong@kylinos.cn>
Cc: Kees Cook <kees@kernel.org>
Cc: <stable@vger.kernel.org> # v5.9+
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://lore.kernel.org/r/20250912170023.3931881-1-samasth.norway.ananda@oracle.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/video/fbdev/core/fbcon.c |   11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

--- a/drivers/video/fbdev/core/fbcon.c
+++ b/drivers/video/fbdev/core/fbcon.c
@@ -2516,9 +2516,16 @@ static int fbcon_set_font(struct vc_data
 	if (fbcon_invalid_charcount(info, charcount))
 		return -EINVAL;
 
-	size = CALC_FONTSZ(h, pitch, charcount);
+	/* Check for integer overflow in font size calculation */
+	if (check_mul_overflow(h, pitch, &size) ||
+	    check_mul_overflow(size, charcount, &size))
+		return -EINVAL;
+
+	/* Check for overflow in allocation size calculation */
+	if (check_add_overflow(FONT_EXTRA_WORDS * sizeof(int), size, &size))
+		return -EINVAL;
 
-	new_data = kmalloc(FONT_EXTRA_WORDS * sizeof(int) + size, GFP_USER);
+	new_data = kmalloc(size, GFP_USER);
 
 	if (!new_data)
 		return -ENOMEM;

[PATCH 6.1 56/73] fbcon: Fix OOB access in font allocation

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Thomas Zimmermann <tzimmermann@suse.de>

commit 9b2f5ef00e852f8e8902a4d4f73aeedc60220c12 upstream.

Commit 1a194e6c8e1e ("fbcon: fix integer overflow in fbcon_do_set_font")
introduced an out-of-bounds access by storing data and allocation sizes
in the same variable. Restore the old size calculation and use the new
variable 'alloc_size' for the allocation.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Fixes: 1a194e6c8e1e ("fbcon: fix integer overflow in fbcon_do_set_font")
Reported-by: Jani Nikula <jani.nikula@linux.intel.com>
Closes: https://gitlab.freedesktop.org/drm/i915/kernel/-/issues/15020
Closes: https://gitlab.freedesktop.org/drm/xe/kernel/-/issues/6201
Cc: Samasth Norway Ananda <samasth.norway.ananda@oracle.com>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: George Kennedy <george.kennedy@oracle.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Simona Vetter <simona@ffwll.ch>
Cc: Helge Deller <deller@gmx.de>
Cc: "Ville Syrjälä" <ville.syrjala@linux.intel.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Qianqiang Liu <qianqiang.liu@163.com>
Cc: Shixiong Ou <oushixiong@kylinos.cn>
Cc: Kees Cook <kees@kernel.org>
Cc: <stable@vger.kernel.org> # v5.9+
Cc: Zsolt Kajtar <soci@c64.rulez.org>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Qianqiang Liu <qianqiang.liu@163.com>
Link: https://lore.kernel.org/r/20250922134619.257684-1-tzimmermann@suse.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/video/fbdev/core/fbcon.c |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

--- a/drivers/video/fbdev/core/fbcon.c
+++ b/drivers/video/fbdev/core/fbcon.c
@@ -2489,7 +2489,7 @@ static int fbcon_set_font(struct vc_data
 	unsigned charcount = font->charcount;
 	int w = font->width;
 	int h = font->height;
-	int size;
+	int size, alloc_size;
 	int i, csum;
 	u8 *new_data, *data = font->data;
 	int pitch = PITCH(font->width);
@@ -2522,10 +2522,10 @@ static int fbcon_set_font(struct vc_data
 		return -EINVAL;
 
 	/* Check for overflow in allocation size calculation */
-	if (check_add_overflow(FONT_EXTRA_WORDS * sizeof(int), size, &size))
+	if (check_add_overflow(FONT_EXTRA_WORDS * sizeof(int), size, &alloc_size))
 		return -EINVAL;
 
-	new_data = kmalloc(size, GFP_USER);
+	new_data = kmalloc(alloc_size, GFP_USER);
 
 	if (!new_data)
 		return -ENOMEM;

[PATCH 6.1 57/73] s390/cpum_cf: Fix uninitialized warning after backport of ce971233242b

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Nathan Chancellor <nathan@kernel.org>

Upstream commit ce971233242b ("s390/cpum_cf: Deny all sampling events by
counter PMU"), backported to 6.6 as commit d660c8d8142e ("s390/cpum_cf:
Deny all sampling events by counter PMU"), implicitly depends on the
unconditional initialization of err to -ENOENT added by upstream
commit aa1ac98268cd ("s390/cpumf: Fix double free on error in
cpumf_pmu_event_init()"). The latter change is missing from 6.6,
resulting in an instance of -Wuninitialized, which is fairly obvious
from looking at the actual diff.

  arch/s390/kernel/perf_cpum_cf.c:858:10: warning: variable 'err' is uninitialized when used here [-Wuninitialized]
    858 |                 return err;
        |                        ^~~

Commit aa1ac98268cd ("s390/cpumf: Fix double free on error in
cpumf_pmu_event_init()") depends on commit c70ca298036c ("perf/core:
Simplify the perf_event_alloc() error path"), which is a part of a much
larger series unsuitable for stable.

Extract the unconditional initialization of err to -ENOENT from
commit aa1ac98268cd ("s390/cpumf: Fix double free on error in
cpumf_pmu_event_init()") and apply it to 6.6 as a standalone change to
resolve the warning.

Fixes: d660c8d8142e ("s390/cpum_cf: Deny all sampling events by counter PMU")
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 arch/s390/kernel/perf_cpum_cf.c |    4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

--- a/arch/s390/kernel/perf_cpum_cf.c
+++ b/arch/s390/kernel/perf_cpum_cf.c
@@ -552,15 +552,13 @@ static int cpumf_pmu_event_type(struct p
 static int cpumf_pmu_event_init(struct perf_event *event)
 {
 	unsigned int type = event->attr.type;
-	int err;
+	int err = -ENOENT;
 
 	if (type == PERF_TYPE_HARDWARE || type == PERF_TYPE_RAW)
 		err = __hw_perf_event_init(event, type);
 	else if (event->pmu->type == type)
 		/* Registered as unknown PMU */
 		err = __hw_perf_event_init(event, cpumf_pmu_event_type(event));
-	else
-		return -ENOENT;
 
 	if (unlikely(err) && event->destroy)
 		event->destroy(event);

[PATCH 6.1 58/73] mm: migrate_device: use more folio in migrate_device_finalize()

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Kefeng Wang <wangkefeng.wang@huawei.com>

commit 58bf8c2bf47550bc94fea9cafd2bc7304d97102c upstream.

Saves a couple of calls to compound_head() and remove last two callers of
putback_lru_page().

Link: https://lkml.kernel.org/r/20240826065814.1336616-5-wangkefeng.wang@huawei.com
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Reviewed-by: Vishal Moola (Oracle) <vishal.moola@gmail.com>
Reviewed-by: Alistair Popple <apopple@nvidia.com>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Zi Yan <ziy@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 mm/migrate_device.c |   41 ++++++++++++++++++++++-------------------
 1 file changed, 22 insertions(+), 19 deletions(-)

--- a/mm/migrate_device.c
+++ b/mm/migrate_device.c
@@ -829,42 +829,45 @@ void migrate_device_finalize(unsigned lo
 	unsigned long i;
 
 	for (i = 0; i < npages; i++) {
-		struct folio *dst, *src;
+		struct folio *dst = NULL, *src = NULL;
 		struct page *newpage = migrate_pfn_to_page(dst_pfns[i]);
 		struct page *page = migrate_pfn_to_page(src_pfns[i]);
 
+		if (newpage)
+			dst = page_folio(newpage);
+
 		if (!page) {
-			if (newpage) {
-				unlock_page(newpage);
-				put_page(newpage);
+			if (dst) {
+				folio_unlock(dst);
+				folio_put(dst);
 			}
 			continue;
 		}
 
-		if (!(src_pfns[i] & MIGRATE_PFN_MIGRATE) || !newpage) {
-			if (newpage) {
-				unlock_page(newpage);
-				put_page(newpage);
+		src = page_folio(page);
+
+		if (!(src_pfns[i] & MIGRATE_PFN_MIGRATE) || !dst) {
+			if (dst) {
+				folio_unlock(dst);
+				folio_put(dst);
 			}
-			newpage = page;
+			dst = src;
 		}
 
-		src = page_folio(page);
-		dst = page_folio(newpage);
 		remove_migration_ptes(src, dst, false);
 		folio_unlock(src);
 
-		if (is_zone_device_page(page))
-			put_page(page);
+		if (folio_is_zone_device(src))
+			folio_put(src);
 		else
-			putback_lru_page(page);
+			folio_putback_lru(src);
 
-		if (newpage != page) {
-			unlock_page(newpage);
-			if (is_zone_device_page(newpage))
-				put_page(newpage);
+		if (dst != src) {
+			folio_unlock(dst);
+			if (folio_is_zone_device(dst))
+				folio_put(dst);
 			else
-				putback_lru_page(newpage);
+				folio_putback_lru(dst);
 		}
 	}
 }

[PATCH 6.1 59/73] mm/migrate_device: dont add folio to be freed to LRU in migrate_device_finalize()

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: David Hildenbrand <david@redhat.com>

commit 41cddf83d8b00f29fd105e7a0777366edc69a5cf upstream.

If migration succeeded, we called
folio_migrate_flags()->mem_cgroup_migrate() to migrate the memcg from the
old to the new folio.  This will set memcg_data of the old folio to 0.

Similarly, if migration failed, memcg_data of the dst folio is left unset.

If we call folio_putback_lru() on such folios (memcg_data == 0), we will
add the folio to be freed to the LRU, making memcg code unhappy.  Running
the hmm selftests:

  # ./hmm-tests
  ...
  #  RUN           hmm.hmm_device_private.migrate ...
  [  102.078007][T14893] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x7ff27d200 pfn:0x13cc00
  [  102.079974][T14893] anon flags: 0x17ff00000020018(uptodate|dirty|swapbacked|node=0|zone=2|lastcpupid=0x7ff)
  [  102.082037][T14893] raw: 017ff00000020018 dead000000000100 dead000000000122 ffff8881353896c9
  [  102.083687][T14893] raw: 00000007ff27d200 0000000000000000 00000001ffffffff 0000000000000000
  [  102.085331][T14893] page dumped because: VM_WARN_ON_ONCE_FOLIO(!memcg && !mem_cgroup_disabled())
  [  102.087230][T14893] ------------[ cut here ]------------
  [  102.088279][T14893] WARNING: CPU: 0 PID: 14893 at ./include/linux/memcontrol.h:726 folio_lruvec_lock_irqsave+0x10e/0x170
  [  102.090478][T14893] Modules linked in:
  [  102.091244][T14893] CPU: 0 UID: 0 PID: 14893 Comm: hmm-tests Not tainted 6.13.0-09623-g6c216bc522fd #151
  [  102.093089][T14893] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-2.fc40 04/01/2014
  [  102.094848][T14893] RIP: 0010:folio_lruvec_lock_irqsave+0x10e/0x170
  [  102.096104][T14893] Code: ...
  [  102.099908][T14893] RSP: 0018:ffffc900236c37b0 EFLAGS: 00010293
  [  102.101152][T14893] RAX: 0000000000000000 RBX: ffffea0004f30000 RCX: ffffffff8183f426
  [  102.102684][T14893] RDX: ffff8881063cb880 RSI: ffffffff81b8117f RDI: ffff8881063cb880
  [  102.104227][T14893] RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000
  [  102.105757][T14893] R10: 0000000000000001 R11: 0000000000000002 R12: ffffc900236c37d8
  [  102.107296][T14893] R13: ffff888277a2bcb0 R14: 000000000000001f R15: 0000000000000000
  [  102.108830][T14893] FS:  00007ff27dbdd740(0000) GS:ffff888277a00000(0000) knlGS:0000000000000000
  [  102.110643][T14893] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
  [  102.111924][T14893] CR2: 00007ff27d400000 CR3: 000000010866e000 CR4: 0000000000750ef0
  [  102.113478][T14893] PKRU: 55555554
  [  102.114172][T14893] Call Trace:
  [  102.114805][T14893]  <TASK>
  [  102.115397][T14893]  ? folio_lruvec_lock_irqsave+0x10e/0x170
  [  102.116547][T14893]  ? __warn.cold+0x110/0x210
  [  102.117461][T14893]  ? folio_lruvec_lock_irqsave+0x10e/0x170
  [  102.118667][T14893]  ? report_bug+0x1b9/0x320
  [  102.119571][T14893]  ? handle_bug+0x54/0x90
  [  102.120494][T14893]  ? exc_invalid_op+0x17/0x50
  [  102.121433][T14893]  ? asm_exc_invalid_op+0x1a/0x20
  [  102.122435][T14893]  ? __wake_up_klogd.part.0+0x76/0xd0
  [  102.123506][T14893]  ? dump_page+0x4f/0x60
  [  102.124352][T14893]  ? folio_lruvec_lock_irqsave+0x10e/0x170
  [  102.125500][T14893]  folio_batch_move_lru+0xd4/0x200
  [  102.126577][T14893]  ? __pfx_lru_add+0x10/0x10
  [  102.127505][T14893]  __folio_batch_add_and_move+0x391/0x720
  [  102.128633][T14893]  ? __pfx_lru_add+0x10/0x10
  [  102.129550][T14893]  folio_putback_lru+0x16/0x80
  [  102.130564][T14893]  migrate_device_finalize+0x9b/0x530
  [  102.131640][T14893]  dmirror_migrate_to_device.constprop.0+0x7c5/0xad0
  [  102.133047][T14893]  dmirror_fops_unlocked_ioctl+0x89b/0xc80

Likely, nothing else goes wrong: putting the last folio reference will
remove the folio from the LRU again.  So besides memcg complaining, adding
the folio to be freed to the LRU is just an unnecessary step.

The new flow resembles what we have in migrate_folio_move(): add the dst
to the lru, remove migration ptes, unlock and unref dst.

Link: https://lkml.kernel.org/r/20250210161317.717936-1-david@redhat.com
Fixes: 8763cb45ab96 ("mm/migrate: new memory migration helper for use with device memory")
Signed-off-by: David Hildenbrand <david@redhat.com>
Cc: Jérôme Glisse <jglisse@redhat.com>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Alistair Popple <apopple@nvidia.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 mm/migrate_device.c |   13 ++++---------
 1 file changed, 4 insertions(+), 9 deletions(-)

--- a/mm/migrate_device.c
+++ b/mm/migrate_device.c
@@ -854,20 +854,15 @@ void migrate_device_finalize(unsigned lo
 			dst = src;
 		}
 
+		if (!folio_is_zone_device(dst))
+			folio_add_lru(dst);
 		remove_migration_ptes(src, dst, false);
 		folio_unlock(src);
-
-		if (folio_is_zone_device(src))
-			folio_put(src);
-		else
-			folio_putback_lru(src);
+		folio_put(src);
 
 		if (dst != src) {
 			folio_unlock(dst);
-			if (folio_is_zone_device(dst))
-				folio_put(dst);
-			else
-				folio_putback_lru(dst);
+			folio_put(dst);
 		}
 	}
 }

[PATCH 6.1 60/73] minmax: add in_range() macro

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: "Matthew Wilcox (Oracle)" <willy@infradead.org>

[ Upstream commit f9bff0e31881d03badf191d3b0005839391f5f2b ]

Patch series "New page table range API", v6.

This patchset changes the API used by the MM to set up page table entries.
The four APIs are:

    set_ptes(mm, addr, ptep, pte, nr)
    update_mmu_cache_range(vma, addr, ptep, nr)
    flush_dcache_folio(folio)
    flush_icache_pages(vma, page, nr)

flush_dcache_folio() isn't technically new, but no architecture
implemented it, so I've done that for them.  The old APIs remain around
but are mostly implemented by calling the new interfaces.

The new APIs are based around setting up N page table entries at once.
The N entries belong to the same PMD, the same folio and the same VMA, so
ptep++ is a legitimate operation, and locking is taken care of for you.
Some architectures can do a better job of it than just a loop, but I have
hesitated to make too deep a change to architectures I don't understand
well.

One thing I have changed in every architecture is that PG_arch_1 is now a
per-folio bit instead of a per-page bit when used for dcache clean/dirty
tracking.  This was something that would have to happen eventually, and it
makes sense to do it now rather than iterate over every page involved in a
cache flush and figure out if it needs to happen.

The point of all this is better performance, and Fengwei Yin has measured
improvement on x86.  I suspect you'll see improvement on your architecture
too.  Try the new will-it-scale test mentioned here:
https://lore.kernel.org/linux-mm/20230206140639.538867-5-fengwei.yin@intel.com/
You'll need to run it on an XFS filesystem and have
CONFIG_TRANSPARENT_HUGEPAGE set.

This patchset is the basis for much of the anonymous large folio work
being done by Ryan, so it's received quite a lot of testing over the last
few months.

This patch (of 38):

Determine if a value lies within a range more efficiently (subtraction +
comparison vs two comparisons and an AND).  It also has useful (under some
circumstances) behaviour if the range exceeds the maximum value of the
type.  Convert all the conflicting definitions of in_range() within the
kernel; some can use the generic definition while others need their own
definition.

Link: https://lkml.kernel.org/r/20230802151406.3735276-1-willy@infradead.org
Link: https://lkml.kernel.org/r/20230802151406.3735276-2-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Eliav Farber <farbere@amazon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 arch/arm/mm/pageattr.c                                     |    6 +-
 drivers/gpu/drm/arm/display/include/malidp_utils.h         |    2 
 drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c |   24 +++++------
 drivers/gpu/drm/msm/adreno/a6xx_gmu.c                      |    6 --
 drivers/net/ethernet/chelsio/cxgb3/cxgb3_main.c            |   18 ++++----
 drivers/virt/acrn/ioreq.c                                  |    4 -
 fs/btrfs/misc.h                                            |    2 
 fs/ext2/balloc.c                                           |    2 
 fs/ext4/ext4.h                                             |    2 
 fs/ufs/util.h                                              |    6 --
 include/linux/minmax.h                                     |   27 +++++++++++++
 lib/logic_pio.c                                            |    3 -
 net/netfilter/nf_nat_core.c                                |    6 +-
 net/tipc/core.h                                            |    2 
 net/tipc/link.c                                            |   10 ++--
 tools/testing/selftests/bpf/progs/get_branch_snapshot.c    |    4 -
 16 files changed, 65 insertions(+), 59 deletions(-)

--- a/arch/arm/mm/pageattr.c
+++ b/arch/arm/mm/pageattr.c
@@ -25,7 +25,7 @@ static int change_page_range(pte_t *ptep
 	return 0;
 }
 
-static bool in_range(unsigned long start, unsigned long size,
+static bool range_in_range(unsigned long start, unsigned long size,
 	unsigned long range_start, unsigned long range_end)
 {
 	return start >= range_start && start < range_end &&
@@ -63,8 +63,8 @@ static int change_memory_common(unsigned
 	if (!size)
 		return 0;
 
-	if (!in_range(start, size, MODULES_VADDR, MODULES_END) &&
-	    !in_range(start, size, VMALLOC_START, VMALLOC_END))
+	if (!range_in_range(start, size, MODULES_VADDR, MODULES_END) &&
+	    !range_in_range(start, size, VMALLOC_START, VMALLOC_END))
 		return -EINVAL;
 
 	return __change_memory_common(start, size, set_mask, clear_mask);
--- a/drivers/gpu/drm/arm/display/include/malidp_utils.h
+++ b/drivers/gpu/drm/arm/display/include/malidp_utils.h
@@ -35,7 +35,7 @@ static inline void set_range(struct mali
 	rg->end   = end;
 }
 
-static inline bool in_range(struct malidp_range *rg, u32 v)
+static inline bool malidp_in_range(struct malidp_range *rg, u32 v)
 {
 	return (v >= rg->start) && (v <= rg->end);
 }
--- a/drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c
+++ b/drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c
@@ -305,12 +305,12 @@ komeda_layer_check_cfg(struct komeda_lay
 	if (komeda_fb_check_src_coords(kfb, src_x, src_y, src_w, src_h))
 		return -EINVAL;
 
-	if (!in_range(&layer->hsize_in, src_w)) {
+	if (!malidp_in_range(&layer->hsize_in, src_w)) {
 		DRM_DEBUG_ATOMIC("invalidate src_w %d.\n", src_w);
 		return -EINVAL;
 	}
 
-	if (!in_range(&layer->vsize_in, src_h)) {
+	if (!malidp_in_range(&layer->vsize_in, src_h)) {
 		DRM_DEBUG_ATOMIC("invalidate src_h %d.\n", src_h);
 		return -EINVAL;
 	}
@@ -452,14 +452,14 @@ komeda_scaler_check_cfg(struct komeda_sc
 	hsize_out = dflow->out_w;
 	vsize_out = dflow->out_h;
 
-	if (!in_range(&scaler->hsize, hsize_in) ||
-	    !in_range(&scaler->hsize, hsize_out)) {
+	if (!malidp_in_range(&scaler->hsize, hsize_in) ||
+	    !malidp_in_range(&scaler->hsize, hsize_out)) {
 		DRM_DEBUG_ATOMIC("Invalid horizontal sizes");
 		return -EINVAL;
 	}
 
-	if (!in_range(&scaler->vsize, vsize_in) ||
-	    !in_range(&scaler->vsize, vsize_out)) {
+	if (!malidp_in_range(&scaler->vsize, vsize_in) ||
+	    !malidp_in_range(&scaler->vsize, vsize_out)) {
 		DRM_DEBUG_ATOMIC("Invalid vertical sizes");
 		return -EINVAL;
 	}
@@ -574,13 +574,13 @@ komeda_splitter_validate(struct komeda_s
 		return -EINVAL;
 	}
 
-	if (!in_range(&splitter->hsize, dflow->in_w)) {
+	if (!malidp_in_range(&splitter->hsize, dflow->in_w)) {
 		DRM_DEBUG_ATOMIC("split in_w:%d is out of the acceptable range.\n",
 				 dflow->in_w);
 		return -EINVAL;
 	}
 
-	if (!in_range(&splitter->vsize, dflow->in_h)) {
+	if (!malidp_in_range(&splitter->vsize, dflow->in_h)) {
 		DRM_DEBUG_ATOMIC("split in_h: %d exceeds the acceptable range.\n",
 				 dflow->in_h);
 		return -EINVAL;
@@ -624,13 +624,13 @@ komeda_merger_validate(struct komeda_mer
 		return -EINVAL;
 	}
 
-	if (!in_range(&merger->hsize_merged, output->out_w)) {
+	if (!malidp_in_range(&merger->hsize_merged, output->out_w)) {
 		DRM_DEBUG_ATOMIC("merged_w: %d is out of the accepted range.\n",
 				 output->out_w);
 		return -EINVAL;
 	}
 
-	if (!in_range(&merger->vsize_merged, output->out_h)) {
+	if (!malidp_in_range(&merger->vsize_merged, output->out_h)) {
 		DRM_DEBUG_ATOMIC("merged_h: %d is out of the accepted range.\n",
 				 output->out_h);
 		return -EINVAL;
@@ -866,8 +866,8 @@ void komeda_complete_data_flow_cfg(struc
 	 * input/output range.
 	 */
 	if (dflow->en_scaling && scaler)
-		dflow->en_split = !in_range(&scaler->hsize, dflow->in_w) ||
-				  !in_range(&scaler->hsize, dflow->out_w);
+		dflow->en_split = !malidp_in_range(&scaler->hsize, dflow->in_w) ||
+				  !malidp_in_range(&scaler->hsize, dflow->out_w);
 }
 
 static bool merger_is_available(struct komeda_pipeline *pipe,
--- a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
@@ -680,12 +680,6 @@ struct block_header {
 	u32 data[];
 };
 
-/* this should be a general kernel helper */
-static int in_range(u32 addr, u32 start, u32 size)
-{
-	return addr >= start && addr < start + size;
-}
-
 static bool fw_block_mem(struct a6xx_gmu_bo *bo, const struct block_header *blk)
 {
 	if (!in_range(blk->addr, bo->iova, bo->size))
--- a/drivers/net/ethernet/chelsio/cxgb3/cxgb3_main.c
+++ b/drivers/net/ethernet/chelsio/cxgb3/cxgb3_main.c
@@ -2126,7 +2126,7 @@ static const struct ethtool_ops cxgb_eth
 	.set_link_ksettings = set_link_ksettings,
 };
 
-static int in_range(int val, int lo, int hi)
+static int cxgb_in_range(int val, int lo, int hi)
 {
 	return val < 0 || (val <= hi && val >= lo);
 }
@@ -2162,19 +2162,19 @@ static int cxgb_siocdevprivate(struct ne
 			return -EINVAL;
 		if (t.qset_idx >= SGE_QSETS)
 			return -EINVAL;
-		if (!in_range(t.intr_lat, 0, M_NEWTIMER) ||
-		    !in_range(t.cong_thres, 0, 255) ||
-		    !in_range(t.txq_size[0], MIN_TXQ_ENTRIES,
+		if (!cxgb_in_range(t.intr_lat, 0, M_NEWTIMER) ||
+		    !cxgb_in_range(t.cong_thres, 0, 255) ||
+		    !cxgb_in_range(t.txq_size[0], MIN_TXQ_ENTRIES,
 			      MAX_TXQ_ENTRIES) ||
-		    !in_range(t.txq_size[1], MIN_TXQ_ENTRIES,
+		    !cxgb_in_range(t.txq_size[1], MIN_TXQ_ENTRIES,
 			      MAX_TXQ_ENTRIES) ||
-		    !in_range(t.txq_size[2], MIN_CTRL_TXQ_ENTRIES,
+		    !cxgb_in_range(t.txq_size[2], MIN_CTRL_TXQ_ENTRIES,
 			      MAX_CTRL_TXQ_ENTRIES) ||
-		    !in_range(t.fl_size[0], MIN_FL_ENTRIES,
+		    !cxgb_in_range(t.fl_size[0], MIN_FL_ENTRIES,
 			      MAX_RX_BUFFERS) ||
-		    !in_range(t.fl_size[1], MIN_FL_ENTRIES,
+		    !cxgb_in_range(t.fl_size[1], MIN_FL_ENTRIES,
 			      MAX_RX_JUMBO_BUFFERS) ||
-		    !in_range(t.rspq_size, MIN_RSPQ_ENTRIES,
+		    !cxgb_in_range(t.rspq_size, MIN_RSPQ_ENTRIES,
 			      MAX_RSPQ_ENTRIES))
 			return -EINVAL;
 
--- a/drivers/virt/acrn/ioreq.c
+++ b/drivers/virt/acrn/ioreq.c
@@ -351,7 +351,7 @@ static bool handle_cf8cfc(struct acrn_vm
 	return is_handled;
 }
 
-static bool in_range(struct acrn_ioreq_range *range,
+static bool acrn_in_range(struct acrn_ioreq_range *range,
 		     struct acrn_io_request *req)
 {
 	bool ret = false;
@@ -389,7 +389,7 @@ static struct acrn_ioreq_client *find_io
 	list_for_each_entry(client, &vm->ioreq_clients, list) {
 		read_lock_bh(&client->range_lock);
 		list_for_each_entry(range, &client->range_list, list) {
-			if (in_range(range, req)) {
+			if (acrn_in_range(range, req)) {
 				found = client;
 				break;
 			}
--- a/fs/btrfs/misc.h
+++ b/fs/btrfs/misc.h
@@ -8,8 +8,6 @@
 #include <linux/math64.h>
 #include <linux/rbtree.h>
 
-#define in_range(b, first, len) ((b) >= (first) && (b) < (first) + (len))
-
 static inline void cond_wake_up(struct wait_queue_head *wq)
 {
 	/*
--- a/fs/ext2/balloc.c
+++ b/fs/ext2/balloc.c
@@ -36,8 +36,6 @@
  */
 
 
-#define in_range(b, first, len)	((b) >= (first) && (b) <= (first) + (len) - 1)
-
 struct ext2_group_desc * ext2_get_group_desc(struct super_block * sb,
 					     unsigned int block_group,
 					     struct buffer_head ** bh)
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -3804,8 +3804,6 @@ static inline void set_bitmap_uptodate(s
 	set_bit(BH_BITMAP_UPTODATE, &(bh)->b_state);
 }
 
-#define in_range(b, first, len)	((b) >= (first) && (b) <= (first) + (len) - 1)
-
 /* For ioend & aio unwritten conversion wait queues */
 #define EXT4_WQ_HASH_SZ		37
 #define ext4_ioend_wq(v)   (&ext4__ioend_wq[((unsigned long)(v)) %\
--- a/fs/ufs/util.h
+++ b/fs/ufs/util.h
@@ -11,12 +11,6 @@
 #include <linux/fs.h>
 #include "swab.h"
 
-
-/*
- * some useful macros
- */
-#define in_range(b,first,len)	((b)>=(first)&&(b)<(first)+(len))
-
 /*
  * functions used for retyping
  */
--- a/include/linux/minmax.h
+++ b/include/linux/minmax.h
@@ -5,6 +5,7 @@
 #include <linux/build_bug.h>
 #include <linux/compiler.h>
 #include <linux/const.h>
+#include <linux/types.h>
 
 /*
  * min()/max()/clamp() macros must accomplish three things:
@@ -192,6 +193,32 @@
  */
 #define clamp_val(val, lo, hi) clamp_t(typeof(val), val, lo, hi)
 
+static inline bool in_range64(u64 val, u64 start, u64 len)
+{
+	return (val - start) < len;
+}
+
+static inline bool in_range32(u32 val, u32 start, u32 len)
+{
+	return (val - start) < len;
+}
+
+/**
+ * in_range - Determine if a value lies within a range.
+ * @val: Value to test.
+ * @start: First value in range.
+ * @len: Number of values in range.
+ *
+ * This is more efficient than "if (start <= val && val < (start + len))".
+ * It also gives a different answer if @start + @len overflows the size of
+ * the type by a sufficient amount to encompass @val.  Decide for yourself
+ * which behaviour you want, or prove that start + len never overflow.
+ * Do not blindly replace one form with the other.
+ */
+#define in_range(val, start, len)					\
+	((sizeof(start) | sizeof(len) | sizeof(val)) <= sizeof(u32) ?	\
+		in_range32(val, start, len) : in_range64(val, start, len))
+
 /**
  * swap - swap values of @a and @b
  * @a: first value
--- a/lib/logic_pio.c
+++ b/lib/logic_pio.c
@@ -20,9 +20,6 @@
 static LIST_HEAD(io_range_list);
 static DEFINE_MUTEX(io_range_mutex);
 
-/* Consider a kernel general helper for this */
-#define in_range(b, first, len)        ((b) >= (first) && (b) < (first) + (len))
-
 /**
  * logic_pio_register_range - register logical PIO range for a host
  * @new_range: pointer to the IO range to be registered.
--- a/net/netfilter/nf_nat_core.c
+++ b/net/netfilter/nf_nat_core.c
@@ -242,7 +242,7 @@ static bool l4proto_in_range(const struc
 /* If we source map this tuple so reply looks like reply_tuple, will
  * that meet the constraints of range.
  */
-static int in_range(const struct nf_conntrack_tuple *tuple,
+static int nf_in_range(const struct nf_conntrack_tuple *tuple,
 		    const struct nf_nat_range2 *range)
 {
 	/* If we are supposed to map IPs, then we must be in the
@@ -291,7 +291,7 @@ find_appropriate_src(struct net *net,
 				       &ct->tuplehash[IP_CT_DIR_REPLY].tuple);
 			result->dst = tuple->dst;
 
-			if (in_range(result, range))
+			if (nf_in_range(result, range))
 				return 1;
 		}
 	}
@@ -523,7 +523,7 @@ get_unique_tuple(struct nf_conntrack_tup
 	if (maniptype == NF_NAT_MANIP_SRC &&
 	    !(range->flags & NF_NAT_RANGE_PROTO_RANDOM_ALL)) {
 		/* try the original tuple first */
-		if (in_range(orig_tuple, range)) {
+		if (nf_in_range(orig_tuple, range)) {
 			if (!nf_nat_used_tuple(orig_tuple, ct)) {
 				*tuple = *orig_tuple;
 				return;
--- a/net/tipc/core.h
+++ b/net/tipc/core.h
@@ -197,7 +197,7 @@ static inline int less(u16 left, u16 rig
 	return less_eq(left, right) && (mod(right) != mod(left));
 }
 
-static inline int in_range(u16 val, u16 min, u16 max)
+static inline int tipc_in_range(u16 val, u16 min, u16 max)
 {
 	return !less(val, min) && !more(val, max);
 }
--- a/net/tipc/link.c
+++ b/net/tipc/link.c
@@ -1624,7 +1624,7 @@ next_gap_ack:
 					  last_ga->bgack_cnt);
 			}
 			/* Check against the last Gap ACK block */
-			if (in_range(seqno, start, end))
+			if (tipc_in_range(seqno, start, end))
 				continue;
 			/* Update/release the packet peer is acking */
 			bc_has_acked = true;
@@ -2252,12 +2252,12 @@ static int tipc_link_proto_rcv(struct ti
 		strncpy(if_name, data, TIPC_MAX_IF_NAME);
 
 		/* Update own tolerance if peer indicates a non-zero value */
-		if (in_range(peers_tol, TIPC_MIN_LINK_TOL, TIPC_MAX_LINK_TOL)) {
+		if (tipc_in_range(peers_tol, TIPC_MIN_LINK_TOL, TIPC_MAX_LINK_TOL)) {
 			l->tolerance = peers_tol;
 			l->bc_rcvlink->tolerance = peers_tol;
 		}
 		/* Update own priority if peer's priority is higher */
-		if (in_range(peers_prio, l->priority + 1, TIPC_MAX_LINK_PRI))
+		if (tipc_in_range(peers_prio, l->priority + 1, TIPC_MAX_LINK_PRI))
 			l->priority = peers_prio;
 
 		/* If peer is going down we want full re-establish cycle */
@@ -2300,13 +2300,13 @@ static int tipc_link_proto_rcv(struct ti
 		l->rcv_nxt_state = msg_seqno(hdr) + 1;
 
 		/* Update own tolerance if peer indicates a non-zero value */
-		if (in_range(peers_tol, TIPC_MIN_LINK_TOL, TIPC_MAX_LINK_TOL)) {
+		if (tipc_in_range(peers_tol, TIPC_MIN_LINK_TOL, TIPC_MAX_LINK_TOL)) {
 			l->tolerance = peers_tol;
 			l->bc_rcvlink->tolerance = peers_tol;
 		}
 		/* Update own prio if peer indicates a different value */
 		if ((peers_prio != l->priority) &&
-		    in_range(peers_prio, 1, TIPC_MAX_LINK_PRI)) {
+		    tipc_in_range(peers_prio, 1, TIPC_MAX_LINK_PRI)) {
 			l->priority = peers_prio;
 			rc = tipc_link_fsm_evt(l, LINK_FAILURE_EVT);
 		}
--- a/tools/testing/selftests/bpf/progs/get_branch_snapshot.c
+++ b/tools/testing/selftests/bpf/progs/get_branch_snapshot.c
@@ -15,7 +15,7 @@ long total_entries = 0;
 #define ENTRY_CNT 32
 struct perf_branch_entry entries[ENTRY_CNT] = {};
 
-static inline bool in_range(__u64 val)
+static inline bool gbs_in_range(__u64 val)
 {
 	return (val >= address_low) && (val < address_high);
 }
@@ -31,7 +31,7 @@ int BPF_PROG(test1, int n, int ret)
 	for (i = 0; i < ENTRY_CNT; i++) {
 		if (i >= total_entries)
 			break;
-		if (in_range(entries[i].from) && in_range(entries[i].to))
+		if (gbs_in_range(entries[i].from) && gbs_in_range(entries[i].to))
 			test1_hits++;
 		else if (!test1_hits)
 			wasted_entries++;

[PATCH 6.1 61/73] minmax: Introduce {min,max}_array()

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Herve Codina <herve.codina@bootlin.com>

[ Upstream commit c952c748c7a983a8bda9112984e6f2c1f6e441a5 ]

Introduce min_array() (resp max_array()) in order to get the
minimal (resp maximum) of values present in an array.

Signed-off-by: Herve Codina <herve.codina@bootlin.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Link: https://lore.kernel.org/r/20230623085830.749991-8-herve.codina@bootlin.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Eliav Farber <farbere@amazon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 include/linux/minmax.h |   64 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 64 insertions(+)

--- a/include/linux/minmax.h
+++ b/include/linux/minmax.h
@@ -168,6 +168,70 @@
  */
 #define max_t(type, x, y)	__careful_cmp(max, (type)(x), (type)(y))
 
+/*
+ * Remove a const qualifier from integer types
+ * _Generic(foo, type-name: association, ..., default: association) performs a
+ * comparison against the foo type (not the qualified type).
+ * Do not use the const keyword in the type-name as it will not match the
+ * unqualified type of foo.
+ */
+#define __unconst_integer_type_cases(type)	\
+	unsigned type:  (unsigned type)0,	\
+	signed type:    (signed type)0
+
+#define __unconst_integer_typeof(x) typeof(			\
+	_Generic((x),						\
+		char: (char)0,					\
+		__unconst_integer_type_cases(char),		\
+		__unconst_integer_type_cases(short),		\
+		__unconst_integer_type_cases(int),		\
+		__unconst_integer_type_cases(long),		\
+		__unconst_integer_type_cases(long long),	\
+		default: (x)))
+
+/*
+ * Do not check the array parameter using __must_be_array().
+ * In the following legit use-case where the "array" passed is a simple pointer,
+ * __must_be_array() will return a failure.
+ * --- 8< ---
+ * int *buff
+ * ...
+ * min = min_array(buff, nb_items);
+ * --- 8< ---
+ *
+ * The first typeof(&(array)[0]) is needed in order to support arrays of both
+ * 'int *buff' and 'int buff[N]' types.
+ *
+ * The array can be an array of const items.
+ * typeof() keeps the const qualifier. Use __unconst_integer_typeof() in order
+ * to discard the const qualifier for the __element variable.
+ */
+#define __minmax_array(op, array, len) ({				\
+	typeof(&(array)[0]) __array = (array);				\
+	typeof(len) __len = (len);					\
+	__unconst_integer_typeof(__array[0]) __element = __array[--__len]; \
+	while (__len--)							\
+		__element = op(__element, __array[__len]);		\
+	__element; })
+
+/**
+ * min_array - return minimum of values present in an array
+ * @array: array
+ * @len: array length
+ *
+ * Note that @len must not be zero (empty array).
+ */
+#define min_array(array, len) __minmax_array(min, array, len)
+
+/**
+ * max_array - return maximum of values present in an array
+ * @array: array
+ * @len: array length
+ *
+ * Note that @len must not be zero (empty array).
+ */
+#define max_array(array, len) __minmax_array(max, array, len)
+
 /**
  * clamp_t - return a value clamped to a given range using a given type
  * @type: the type of variable to use

[PATCH 6.1 62/73] minmax: deduplicate __unconst_integer_typeof()

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

[ Upstream commit 5e57418a2031cd5e1863efdf3d7447a16a368172 ]

It appears that compiler_types.h already have an implementation of the
__unconst_integer_typeof() called __unqual_scalar_typeof().  Use it
instead of the copy.

Link: https://lkml.kernel.org/r/20230911154913.4176033-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Herve Codina <herve.codina@bootlin.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Eliav Farber <farbere@amazon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 include/linux/minmax.h |   25 ++-----------------------
 1 file changed, 2 insertions(+), 23 deletions(-)

--- a/include/linux/minmax.h
+++ b/include/linux/minmax.h
@@ -169,27 +169,6 @@
 #define max_t(type, x, y)	__careful_cmp(max, (type)(x), (type)(y))
 
 /*
- * Remove a const qualifier from integer types
- * _Generic(foo, type-name: association, ..., default: association) performs a
- * comparison against the foo type (not the qualified type).
- * Do not use the const keyword in the type-name as it will not match the
- * unqualified type of foo.
- */
-#define __unconst_integer_type_cases(type)	\
-	unsigned type:  (unsigned type)0,	\
-	signed type:    (signed type)0
-
-#define __unconst_integer_typeof(x) typeof(			\
-	_Generic((x),						\
-		char: (char)0,					\
-		__unconst_integer_type_cases(char),		\
-		__unconst_integer_type_cases(short),		\
-		__unconst_integer_type_cases(int),		\
-		__unconst_integer_type_cases(long),		\
-		__unconst_integer_type_cases(long long),	\
-		default: (x)))
-
-/*
  * Do not check the array parameter using __must_be_array().
  * In the following legit use-case where the "array" passed is a simple pointer,
  * __must_be_array() will return a failure.
@@ -203,13 +182,13 @@
  * 'int *buff' and 'int buff[N]' types.
  *
  * The array can be an array of const items.
- * typeof() keeps the const qualifier. Use __unconst_integer_typeof() in order
+ * typeof() keeps the const qualifier. Use __unqual_scalar_typeof() in order
  * to discard the const qualifier for the __element variable.
  */
 #define __minmax_array(op, array, len) ({				\
 	typeof(&(array)[0]) __array = (array);				\
 	typeof(len) __len = (len);					\
-	__unconst_integer_typeof(__array[0]) __element = __array[--__len]; \
+	__unqual_scalar_typeof(__array[0]) __element = __array[--__len];\
 	while (__len--)							\
 		__element = op(__element, __array[__len]);		\
 	__element; })

[PATCH 6.1 63/73] minmax: fix indentation of __cmp_once() and __clamp_once()

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: David Laight <David.Laight@ACULAB.COM>

[ Upstream commit f4b84b2ff851f01d0fac619eadef47eb41648534 ]

Remove the extra indentation and align continuation markers.

Link: https://lkml.kernel.org/r/bed41317a05c498ea0209eafbcab45a5@AcuMS.aculab.com
Signed-off-by: David Laight <david.laight@aculab.com>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Jason A. Donenfeld <Jason@zx2c4.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Eliav Farber <farbere@amazon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 include/linux/minmax.h |   30 +++++++++++++++---------------
 1 file changed, 15 insertions(+), 15 deletions(-)

--- a/include/linux/minmax.h
+++ b/include/linux/minmax.h
@@ -46,11 +46,11 @@
 #define __cmp(op, x, y)	((x) __cmp_op_##op (y) ? (x) : (y))
 
 #define __cmp_once(op, x, y, unique_x, unique_y) ({	\
-		typeof(x) unique_x = (x);		\
-		typeof(y) unique_y = (y);		\
-		static_assert(__types_ok(x, y),		\
-			#op "(" #x ", " #y ") signedness error, fix types or consider u" #op "() before " #op "_t()"); \
-		__cmp(op, unique_x, unique_y); })
+	typeof(x) unique_x = (x);			\
+	typeof(y) unique_y = (y);			\
+	static_assert(__types_ok(x, y),			\
+		#op "(" #x ", " #y ") signedness error, fix types or consider u" #op "() before " #op "_t()"); \
+	__cmp(op, unique_x, unique_y); })
 
 #define __careful_cmp(op, x, y)					\
 	__builtin_choose_expr(__is_constexpr((x) - (y)),	\
@@ -60,16 +60,16 @@
 #define __clamp(val, lo, hi)	\
 	((val) >= (hi) ? (hi) : ((val) <= (lo) ? (lo) : (val)))
 
-#define __clamp_once(val, lo, hi, unique_val, unique_lo, unique_hi) ({	\
-		typeof(val) unique_val = (val);				\
-		typeof(lo) unique_lo = (lo);				\
-		typeof(hi) unique_hi = (hi);				\
-		static_assert(__builtin_choose_expr(__is_constexpr((lo) > (hi)), 	\
-				(lo) <= (hi), true),					\
-			"clamp() low limit " #lo " greater than high limit " #hi);	\
-		static_assert(__types_ok(val, lo), "clamp() 'lo' signedness error");	\
-		static_assert(__types_ok(val, hi), "clamp() 'hi' signedness error");	\
-		__clamp(unique_val, unique_lo, unique_hi); })
+#define __clamp_once(val, lo, hi, unique_val, unique_lo, unique_hi) ({		\
+	typeof(val) unique_val = (val);						\
+	typeof(lo) unique_lo = (lo);						\
+	typeof(hi) unique_hi = (hi);						\
+	static_assert(__builtin_choose_expr(__is_constexpr((lo) > (hi)), 	\
+			(lo) <= (hi), true),					\
+		"clamp() low limit " #lo " greater than high limit " #hi);	\
+	static_assert(__types_ok(val, lo), "clamp() 'lo' signedness error");	\
+	static_assert(__types_ok(val, hi), "clamp() 'hi' signedness error");	\
+	__clamp(unique_val, unique_lo, unique_hi); })
 
 #define __careful_clamp(val, lo, hi) ({					\
 	__builtin_choose_expr(__is_constexpr((val) - (lo) + (hi)),	\

[PATCH 6.1 64/73] minmax: avoid overly complicated constant expressions in VM code

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Linus Torvalds <torvalds@linux-foundation.org>

[ Upstream commit 3a7e02c040b130b5545e4b115aada7bacd80a2b6 ]

The minmax infrastructure is overkill for simple constants, and can
cause huge expansions because those simple constants are then used by
other things.

For example, 'pageblock_order' is a core VM constant, but because it was
implemented using 'min_t()' and all the type-checking that involves, it
actually expanded to something like 2.5kB of preprocessor noise.

And when that simple constant was then used inside other expansions:

  #define pageblock_nr_pages      (1UL << pageblock_order)
  #define pageblock_start_pfn(pfn)  ALIGN_DOWN((pfn), pageblock_nr_pages)

and we then use that inside a 'max()' macro:

	case ISOLATE_SUCCESS:
		update_cached = false;
		last_migrated_pfn = max(cc->zone->zone_start_pfn,
			pageblock_start_pfn(cc->migrate_pfn - 1));

the end result was that one statement expanding to 253kB in size.

There are probably other cases of this, but this one case certainly
stood out.

I've added 'MIN_T()' and 'MAX_T()' macros for this kind of "core simple
constant with specific type" use.  These macros skip the type checking,
and as such need to be very sparingly used only for obvious cases that
have active issues like this.

Reported-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Link: https://lore.kernel.org/all/36aa2cad-1db1-4abf-8dd2-fb20484aabc3@lucifer.local/
Cc: David Laight <David.Laight@aculab.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Eliav Farber <farbere@amazon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 include/linux/minmax.h          |    7 +++++++
 include/linux/pageblock-flags.h |    2 +-
 2 files changed, 8 insertions(+), 1 deletion(-)

--- a/include/linux/minmax.h
+++ b/include/linux/minmax.h
@@ -270,4 +270,11 @@ static inline bool in_range32(u32 val, u
 #define swap(a, b) \
 	do { typeof(a) __tmp = (a); (a) = (b); (b) = __tmp; } while (0)
 
+/*
+ * Use these carefully: no type checking, and uses the arguments
+ * multiple times. Use for obvious constants only.
+ */
+#define MIN_T(type,a,b) __cmp(min,(type)(a),(type)(b))
+#define MAX_T(type,a,b) __cmp(max,(type)(a),(type)(b))
+
 #endif	/* _LINUX_MINMAX_H */
--- a/include/linux/pageblock-flags.h
+++ b/include/linux/pageblock-flags.h
@@ -41,7 +41,7 @@ extern unsigned int pageblock_order;
  * Huge pages are a constant size, but don't exceed the maximum allocation
  * granularity.
  */
-#define pageblock_order		min_t(unsigned int, HUGETLB_PAGE_ORDER, MAX_ORDER - 1)
+#define pageblock_order		MIN_T(unsigned int, HUGETLB_PAGE_ORDER, MAX_ORDER - 1)
 
 #endif /* CONFIG_HUGETLB_PAGE_SIZE_VARIABLE */
 

[PATCH 6.1 65/73] drm/ast: Use msleep instead of mdelay for edid read

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Nirmoy Das <nirmoyd@nvidia.com>

[ Upstream commit c7c31f8dc54aa3c9b2c994b5f1ff7e740a654e97 ]

The busy-waiting in `mdelay()` can cause CPU stalls and kernel timeouts
during boot.

Signed-off-by: Nirmoy Das <nirmoyd@nvidia.com>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Tested-by: Carol L Soto csoto@nvidia.com<mailto:csoto@nvidia.com>
Fixes: 594e9c04b586 ("drm/ast: Create the driver for ASPEED proprietory Display-Port")
Cc: KuoHsiang Chou <kuohsiang_chou@aspeedtech.com>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Dave Airlie <airlied@redhat.com>
Cc: Jocelyn Falempe <jfalempe@redhat.com>
Cc: dri-devel@lists.freedesktop.org
Cc: <stable@vger.kernel.org> # v5.19+
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://lore.kernel.org/r/20250917194346.2905522-1-nirmoyd@nvidia.com
[ Applied change to ast_astdp_read_edid() instead of ast_astdp_read_edid_block() ]
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/gpu/drm/ast/ast_dp.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/gpu/drm/ast/ast_dp.c
+++ b/drivers/gpu/drm/ast/ast_dp.c
@@ -51,7 +51,7 @@ int ast_astdp_read_edid(struct drm_devic
 			 *	  of right-click of mouse.
 			 * 2. The Delays are often longer a lot when system resume from S3/S4.
 			 */
-			mdelay(j+1);
+			msleep(j + 1);
 
 			if (!(ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xD1,
 							ASTDP_MCU_FW_EXECUTING) &&

[PATCH 6.1 66/73] i40e: fix validation of VF state in get resources

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Lukasz Czapnik <lukasz.czapnik@intel.com>

[ Upstream commit 877b7e6ffc23766448236e8732254534c518ba42 ]

VF state I40E_VF_STATE_ACTIVE is not the only state in which
VF is actually active so it should not be used to determine
if a VF is allowed to obtain resources.

Use I40E_VF_STATE_RESOURCES_LOADED that is set only in
i40e_vc_get_vf_resources_msg() and cleared during reset.

Fixes: 61125b8be85d ("i40e: Fix failed opcode appearing if handling messages from VF")
Cc: stable@vger.kernel.org
Signed-off-by: Lukasz Czapnik <lukasz.czapnik@intel.com>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Signed-off-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Tested-by: Rafal Romanowski <rafal.romanowski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
[ Adjust context ]
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c |    7 ++++++-
 drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.h |    3 ++-
 2 files changed, 8 insertions(+), 2 deletions(-)

--- a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
@@ -1455,6 +1455,7 @@ static void i40e_trigger_vf_reset(struct
 	 * functions that may still be running at this point.
 	 */
 	clear_bit(I40E_VF_STATE_INIT, &vf->vf_states);
+	clear_bit(I40E_VF_STATE_RESOURCES_LOADED, &vf->vf_states);
 
 	/* In the case of a VFLR, the HW has already reset the VF and we
 	 * just need to clean up, so don't hit the VFRTRIG register.
@@ -2121,7 +2122,10 @@ static int i40e_vc_get_vf_resources_msg(
 	size_t len = 0;
 	int ret;
 
-	if (!i40e_sync_vf_state(vf, I40E_VF_STATE_INIT)) {
+	i40e_sync_vf_state(vf, I40E_VF_STATE_INIT);
+
+	if (!test_bit(I40E_VF_STATE_INIT, &vf->vf_states) ||
+	    test_bit(I40E_VF_STATE_RESOURCES_LOADED, &vf->vf_states)) {
 		aq_ret = I40E_ERR_PARAM;
 		goto err;
 	}
@@ -2224,6 +2228,7 @@ static int i40e_vc_get_vf_resources_msg(
 				vf->default_lan_addr.addr);
 	}
 	set_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states);
+	set_bit(I40E_VF_STATE_RESOURCES_LOADED, &vf->vf_states);
 
 err:
 	/* send the response back to the VF */
--- a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.h
+++ b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.h
@@ -39,7 +39,8 @@ enum i40e_vf_states {
 	I40E_VF_STATE_MC_PROMISC,
 	I40E_VF_STATE_UC_PROMISC,
 	I40E_VF_STATE_PRE_ENABLE,
-	I40E_VF_STATE_RESETTING
+	I40E_VF_STATE_RESETTING,
+	I40E_VF_STATE_RESOURCES_LOADED,
 };
 
 /* VF capabilities */

[PATCH 6.1 67/73] i40e: fix idx validation in config queues msg

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Lukasz Czapnik <lukasz.czapnik@intel.com>

[ Upstream commit f1ad24c5abe1eaef69158bac1405a74b3c365115 ]

Ensure idx is within range of active/initialized TCs when iterating over
vf->ch[idx] in i40e_vc_config_queues_msg().

Fixes: c27eac48160d ("i40e: Enable ADq and create queue channel/s on VF")
Cc: stable@vger.kernel.org
Signed-off-by: Lukasz Czapnik <lukasz.czapnik@intel.com>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Signed-off-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Tested-by: Kamakshi Nellore <nellorex.kamakshi@intel.com> (A Contingent Worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
[ Adjust context ]
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
@@ -2391,7 +2391,7 @@ static int i40e_vc_config_queues_msg(str
 		}
 
 		if (vf->adq_enabled) {
-			if (idx >= ARRAY_SIZE(vf->ch)) {
+			if (idx >= vf->num_tc) {
 				aq_ret = I40E_ERR_NO_AVAILABLE_VSI;
 				goto error_param;
 			}
@@ -2412,7 +2412,7 @@ static int i40e_vc_config_queues_msg(str
 		 * to its appropriate VSIs based on TC mapping
 		 */
 		if (vf->adq_enabled) {
-			if (idx >= ARRAY_SIZE(vf->ch)) {
+			if (idx >= vf->num_tc) {
 				aq_ret = I40E_ERR_NO_AVAILABLE_VSI;
 				goto error_param;
 			}

[PATCH 6.1 68/73] i40e: increase max descriptors for XL710

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Justin Bronder <jsbronder@cold-front.org>

[ Upstream commit aa6908ca3bd1e713fd6cd8d7193a008f060bf7d9 ]

In Tables 8-12 and 8-22 in the X710/XXV710/XL710 datasheet, the QLEN
description states that the maximum size of the descriptor queue is 8k
minus 32, or 8160.

Signed-off-by: Justin Bronder <jsbronder@cold-front.org>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Pucha Himasekhar Reddy <himasekharx.reddy.pucha@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Link: https://lore.kernel.org/r/20231113231047.548659-2-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Stable-dep-of: 55d225670def ("i40e: add validation for ring_len param")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/net/ethernet/intel/i40e/i40e.h         |    1 +
 drivers/net/ethernet/intel/i40e/i40e_ethtool.c |   25 +++++++++++++++++++------
 2 files changed, 20 insertions(+), 6 deletions(-)

--- a/drivers/net/ethernet/intel/i40e/i40e.h
+++ b/drivers/net/ethernet/intel/i40e/i40e.h
@@ -50,6 +50,7 @@
 #define I40E_MAX_VEB			16
 
 #define I40E_MAX_NUM_DESCRIPTORS	4096
+#define I40E_MAX_NUM_DESCRIPTORS_XL710	8160
 #define I40E_MAX_CSR_SPACE		(4 * 1024 * 1024 - 64 * 1024)
 #define I40E_DEFAULT_NUM_DESCRIPTORS	512
 #define I40E_REQ_DESCRIPTOR_MULTIPLE	32
--- a/drivers/net/ethernet/intel/i40e/i40e_ethtool.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_ethtool.c
@@ -2012,6 +2012,18 @@ static void i40e_get_drvinfo(struct net_
 		drvinfo->n_priv_flags += I40E_GL_PRIV_FLAGS_STR_LEN;
 }
 
+static u32 i40e_get_max_num_descriptors(struct i40e_pf *pf)
+{
+	struct i40e_hw *hw = &pf->hw;
+
+	switch (hw->mac.type) {
+	case I40E_MAC_XL710:
+		return I40E_MAX_NUM_DESCRIPTORS_XL710;
+	default:
+		return I40E_MAX_NUM_DESCRIPTORS;
+	}
+}
+
 static void i40e_get_ringparam(struct net_device *netdev,
 			       struct ethtool_ringparam *ring,
 			       struct kernel_ethtool_ringparam *kernel_ring,
@@ -2021,8 +2033,8 @@ static void i40e_get_ringparam(struct ne
 	struct i40e_pf *pf = np->vsi->back;
 	struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
 
-	ring->rx_max_pending = I40E_MAX_NUM_DESCRIPTORS;
-	ring->tx_max_pending = I40E_MAX_NUM_DESCRIPTORS;
+	ring->rx_max_pending = i40e_get_max_num_descriptors(pf);
+	ring->tx_max_pending = i40e_get_max_num_descriptors(pf);
 	ring->rx_mini_max_pending = 0;
 	ring->rx_jumbo_max_pending = 0;
 	ring->rx_pending = vsi->rx_rings[0]->count;
@@ -2047,12 +2059,12 @@ static int i40e_set_ringparam(struct net
 			      struct kernel_ethtool_ringparam *kernel_ring,
 			      struct netlink_ext_ack *extack)
 {
+	u32 new_rx_count, new_tx_count, max_num_descriptors;
 	struct i40e_ring *tx_rings = NULL, *rx_rings = NULL;
 	struct i40e_netdev_priv *np = netdev_priv(netdev);
 	struct i40e_hw *hw = &np->vsi->back->hw;
 	struct i40e_vsi *vsi = np->vsi;
 	struct i40e_pf *pf = vsi->back;
-	u32 new_rx_count, new_tx_count;
 	u16 tx_alloc_queue_pairs;
 	int timeout = 50;
 	int i, err = 0;
@@ -2060,14 +2072,15 @@ static int i40e_set_ringparam(struct net
 	if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending))
 		return -EINVAL;
 
-	if (ring->tx_pending > I40E_MAX_NUM_DESCRIPTORS ||
+	max_num_descriptors = i40e_get_max_num_descriptors(pf);
+	if (ring->tx_pending > max_num_descriptors ||
 	    ring->tx_pending < I40E_MIN_NUM_DESCRIPTORS ||
-	    ring->rx_pending > I40E_MAX_NUM_DESCRIPTORS ||
+	    ring->rx_pending > max_num_descriptors ||
 	    ring->rx_pending < I40E_MIN_NUM_DESCRIPTORS) {
 		netdev_info(netdev,
 			    "Descriptors requested (Tx: %d / Rx: %d) out of range [%d-%d]\n",
 			    ring->tx_pending, ring->rx_pending,
-			    I40E_MIN_NUM_DESCRIPTORS, I40E_MAX_NUM_DESCRIPTORS);
+			    I40E_MIN_NUM_DESCRIPTORS, max_num_descriptors);
 		return -EINVAL;
 	}
 

[PATCH 6.1 69/73] i40e: add validation for ring_len param

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Lukasz Czapnik <lukasz.czapnik@intel.com>

[ Upstream commit 55d225670def06b01af2e7a5e0446fbe946289e8 ]

The `ring_len` parameter provided by the virtual function (VF)
is assigned directly to the hardware memory context (HMC) without
any validation.

To address this, introduce an upper boundary check for both Tx and Rx
queue lengths. The maximum number of descriptors supported by the
hardware is 8k-32.
Additionally, enforce alignment constraints: Tx rings must be a multiple
of 8, and Rx rings must be a multiple of 32.

Fixes: 5c3c48ac6bf5 ("i40e: implement virtual device interface")
Cc: stable@vger.kernel.org
Signed-off-by: Lukasz Czapnik <lukasz.czapnik@intel.com>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Signed-off-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Tested-by: Rafal Romanowski <rafal.romanowski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c |   14 ++++++++++++++
 1 file changed, 14 insertions(+)

--- a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
@@ -653,6 +653,13 @@ static int i40e_config_vsi_tx_queue(stru
 
 	/* only set the required fields */
 	tx_ctx.base = info->dma_ring_addr / 128;
+
+	/* ring_len has to be multiple of 8 */
+	if (!IS_ALIGNED(info->ring_len, 8) ||
+	    info->ring_len > I40E_MAX_NUM_DESCRIPTORS_XL710) {
+		ret = -EINVAL;
+		goto error_context;
+	}
 	tx_ctx.qlen = info->ring_len;
 	tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[0]);
 	tx_ctx.rdylist_act = 0;
@@ -718,6 +725,13 @@ static int i40e_config_vsi_rx_queue(stru
 
 	/* only set the required fields */
 	rx_ctx.base = info->dma_ring_addr / 128;
+
+	/* ring_len has to be multiple of 32 */
+	if (!IS_ALIGNED(info->ring_len, 32) ||
+	    info->ring_len > I40E_MAX_NUM_DESCRIPTORS_XL710) {
+		ret = -EINVAL;
+		goto error_param;
+	}
 	rx_ctx.qlen = info->ring_len;
 
 	if (info->splithdr_enabled) {

[PATCH 6.1 70/73] kmsan: fix out-of-bounds access to shadow memory

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Eric Biggers <ebiggers@kernel.org>

[ Upstream commit 85e1ff61060a765d91ee62dc5606d4d547d9d105 ]

Running sha224_kunit on a KMSAN-enabled kernel results in a crash in
kmsan_internal_set_shadow_origin():

    BUG: unable to handle page fault for address: ffffbc3840291000
    #PF: supervisor read access in kernel mode
    #PF: error_code(0x0000) - not-present page
    PGD 1810067 P4D 1810067 PUD 192d067 PMD 3c17067 PTE 0
    Oops: 0000 [#1] SMP NOPTI
    CPU: 0 UID: 0 PID: 81 Comm: kunit_try_catch Tainted: G                 N  6.17.0-rc3 #10 PREEMPT(voluntary)
    Tainted: [N]=TEST
    Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.17.0-0-gb52ca86e094d-prebuilt.qemu.org 04/01/2014
    RIP: 0010:kmsan_internal_set_shadow_origin+0x91/0x100
    [...]
    Call Trace:
    <TASK>
    __msan_memset+0xee/0x1a0
    sha224_final+0x9e/0x350
    test_hash_buffer_overruns+0x46f/0x5f0
    ? kmsan_get_shadow_origin_ptr+0x46/0xa0
    ? __pfx_test_hash_buffer_overruns+0x10/0x10
    kunit_try_run_case+0x198/0xa00

This occurs when memset() is called on a buffer that is not 4-byte aligned
and extends to the end of a guard page, i.e.  the next page is unmapped.

The bug is that the loop at the end of kmsan_internal_set_shadow_origin()
accesses the wrong shadow memory bytes when the address is not 4-byte
aligned.  Since each 4 bytes are associated with an origin, it rounds the
address and size so that it can access all the origins that contain the
buffer.  However, when it checks the corresponding shadow bytes for a
particular origin, it incorrectly uses the original unrounded shadow
address.  This results in reads from shadow memory beyond the end of the
buffer's shadow memory, which crashes when that memory is not mapped.

To fix this, correctly align the shadow address before accessing the 4
shadow bytes corresponding to each origin.

Link: https://lkml.kernel.org/r/20250911195858.394235-1-ebiggers@kernel.org
Fixes: 2ef3cec44c60 ("kmsan: do not wipe out origin when doing partial unpoisoning")
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
Tested-by: Alexander Potapenko <glider@google.com>
Reviewed-by: Alexander Potapenko <glider@google.com>
Cc: Dmitriy Vyukov <dvyukov@google.com>
Cc: Marco Elver <elver@google.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
[ Adjust context in tests ]
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 mm/kmsan/core.c       |   10 +++++++---
 mm/kmsan/kmsan_test.c |   16 ++++++++++++++++
 2 files changed, 23 insertions(+), 3 deletions(-)

--- a/mm/kmsan/core.c
+++ b/mm/kmsan/core.c
@@ -258,7 +258,8 @@ void kmsan_internal_set_shadow_origin(vo
 				      u32 origin, bool checked)
 {
 	u64 address = (u64)addr;
-	u32 *shadow_start, *origin_start;
+	void *shadow_start;
+	u32 *aligned_shadow, *origin_start;
 	size_t pad = 0;
 
 	KMSAN_WARN_ON(!kmsan_metadata_is_contiguous(addr, size));
@@ -277,9 +278,12 @@ void kmsan_internal_set_shadow_origin(vo
 	}
 	__memset(shadow_start, b, size);
 
-	if (!IS_ALIGNED(address, KMSAN_ORIGIN_SIZE)) {
+	if (IS_ALIGNED(address, KMSAN_ORIGIN_SIZE)) {
+		aligned_shadow = shadow_start;
+	} else {
 		pad = address % KMSAN_ORIGIN_SIZE;
 		address -= pad;
+		aligned_shadow = shadow_start - pad;
 		size += pad;
 	}
 	size = ALIGN(size, KMSAN_ORIGIN_SIZE);
@@ -293,7 +297,7 @@ void kmsan_internal_set_shadow_origin(vo
 	 * corresponding shadow slot is zero.
 	 */
 	for (int i = 0; i < size / KMSAN_ORIGIN_SIZE; i++) {
-		if (origin || !shadow_start[i])
+		if (origin || !aligned_shadow[i])
 			origin_start[i] = origin;
 	}
 }
--- a/mm/kmsan/kmsan_test.c
+++ b/mm/kmsan/kmsan_test.c
@@ -470,6 +470,21 @@ static void test_memcpy_aligned_to_unali
 	KUNIT_EXPECT_TRUE(test, report_matches(&expect));
 }
 
+/* Test case: ensure that KMSAN does not access shadow memory out of bounds. */
+static void test_memset_on_guarded_buffer(struct kunit *test)
+{
+	void *buf = vmalloc(PAGE_SIZE);
+
+	kunit_info(test,
+		   "memset() on ends of guarded buffer should not crash\n");
+
+	for (size_t size = 0; size <= 128; size++) {
+		memset(buf, 0xff, size);
+		memset(buf + PAGE_SIZE - size, 0xff, size);
+	}
+	vfree(buf);
+}
+
 static noinline void fibonacci(int *array, int size, int start) {
 	if (start < 2 || (start == size))
 		return;
@@ -515,6 +530,7 @@ static struct kunit_case kmsan_test_case
 	KUNIT_CASE(test_memcpy_aligned_to_aligned),
 	KUNIT_CASE(test_memcpy_aligned_to_unaligned),
 	KUNIT_CASE(test_memcpy_aligned_to_unaligned2),
+	KUNIT_CASE(test_memset_on_guarded_buffer),
 	KUNIT_CASE(test_long_origin_chain),
 	{},
 };

[PATCH 6.1 71/73] minmax: make generic MIN() and MAX() macros available everywhere

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Linus Torvalds <torvalds@linux-foundation.org>

[ Upstream commit 1a251f52cfdc417c84411a056bc142cbd77baef4 ]

This just standardizes the use of MIN() and MAX() macros, with the very
traditional semantics.  The goal is to use these for C constant
expressions and for top-level / static initializers, and so be able to
simplify the min()/max() macros.

These macro names were used by various kernel code - they are very
traditional, after all - and all such users have been fixed up, with a
few different approaches:

 - trivial duplicated macro definitions have been removed

   Note that 'trivial' here means that it's obviously kernel code that
   already included all the major kernel headers, and thus gets the new
   generic MIN/MAX macros automatically.

 - non-trivial duplicated macro definitions are guarded with #ifndef

   This is the "yes, they define their own versions, but no, the include
   situation is not entirely obvious, and maybe they don't get the
   generic version automatically" case.

 - strange use case #1

   A couple of drivers decided that the way they want to describe their
   versioning is with

	#define MAJ 1
	#define MIN 2
	#define DRV_VERSION __stringify(MAJ) "." __stringify(MIN)

   which adds zero value and I just did my Alexander the Great
   impersonation, and rewrote that pointless Gordian knot as

	#define DRV_VERSION "1.2"

   instead.

 - strange use case #2

   A couple of drivers thought that it's a good idea to have a random
   'MIN' or 'MAX' define for a value or index into a table, rather than
   the traditional macro that takes arguments.

   These values were re-written as C enum's instead. The new
   function-line macros only expand when followed by an open
   parenthesis, and thus don't clash with enum use.

Happily, there weren't really all that many of these cases, and a lot of
users already had the pattern of using '#ifndef' guarding (or in one
case just using '#undef MIN') before defining their own private version
that does the same thing. I left such cases alone.

Cc: David Laight <David.Laight@aculab.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Eliav Farber <farbere@amazon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
v2:
  - Add missing #ifndef guards around MIN/MAX macro definitions
    to avoid redefinition errors in:
      * drivers/gpu/drm/amd/amdgpu/amdgpu.h
      * drivers/gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c
      * drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_0_ppt.c
      * drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_7_ppt.c

 arch/um/drivers/mconsole_user.c                                       |    2 
 drivers/edac/skx_common.h                                             |    1 
 drivers/gpu/drm/amd/amdgpu/amdgpu.h                                   |    2 
 drivers/gpu/drm/amd/display/modules/hdcp/hdcp_ddc.c                   |    2 
 drivers/gpu/drm/amd/pm/powerplay/hwmgr/ppevvmath.h                    |   14 ++++-
 drivers/gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c               |    2 
 drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_0_ppt.c                  |    3 +
 drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_7_ppt.c                  |    3 +
 drivers/gpu/drm/radeon/evergreen_cs.c                                 |    2 
 drivers/hwmon/adt7475.c                                               |   24 +++++-----
 drivers/media/dvb-frontends/stv0367_priv.h                            |    3 +
 drivers/net/fjes/fjes_main.c                                          |    4 -
 drivers/nfc/pn544/i2c.c                                               |    2 
 drivers/platform/x86/sony-laptop.c                                    |    1 
 drivers/scsi/isci/init.c                                              |    6 --
 drivers/staging/media/atomisp/pci/hive_isp_css_include/math_support.h |    5 --
 include/linux/minmax.h                                                |    2 
 kernel/trace/preemptirq_delay_test.c                                  |    2 
 lib/btree.c                                                           |    1 
 lib/decompress_unlzma.c                                               |    2 
 mm/zsmalloc.c                                                         |    1 
 tools/testing/selftests/seccomp/seccomp_bpf.c                         |    2 
 tools/testing/selftests/vm/mremap_test.c                              |    2 
 23 files changed, 51 insertions(+), 37 deletions(-)

--- a/arch/um/drivers/mconsole_user.c
+++ b/arch/um/drivers/mconsole_user.c
@@ -71,7 +71,9 @@ static struct mconsole_command *mconsole
 	return NULL;
 }
 
+#ifndef MIN
 #define MIN(a,b) ((a)<(b) ? (a):(b))
+#endif
 
 #define STRINGX(x) #x
 #define STRING(x) STRINGX(x)
--- a/drivers/edac/skx_common.h
+++ b/drivers/edac/skx_common.h
@@ -45,7 +45,6 @@
 #define I10NM_NUM_CHANNELS	MAX(I10NM_NUM_DDR_CHANNELS, I10NM_NUM_HBM_CHANNELS)
 #define I10NM_NUM_DIMMS		MAX(I10NM_NUM_DDR_DIMMS, I10NM_NUM_HBM_DIMMS)
 
-#define MAX(a, b)	((a) > (b) ? (a) : (b))
 #define NUM_IMC		MAX(SKX_NUM_IMC, I10NM_NUM_IMC)
 #define NUM_CHANNELS	MAX(SKX_NUM_CHANNELS, I10NM_NUM_CHANNELS)
 #define NUM_DIMMS	MAX(SKX_NUM_DIMMS, I10NM_NUM_DIMMS)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -1258,7 +1258,9 @@ int emu_soc_asic_init(struct amdgpu_devi
 
 #define amdgpu_inc_vram_lost(adev) atomic_inc(&((adev)->vram_lost_counter));
 
+#ifndef MIN
 #define MIN(X, Y) ((X) < (Y) ? (X) : (Y))
+#endif
 
 /* Common functions */
 bool amdgpu_device_has_job_running(struct amdgpu_device *adev);
--- a/drivers/gpu/drm/amd/display/modules/hdcp/hdcp_ddc.c
+++ b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp_ddc.c
@@ -25,7 +25,9 @@
 
 #include "hdcp.h"
 
+#ifndef MIN
 #define MIN(a, b) ((a) < (b) ? (a) : (b))
+#endif
 #define HDCP_I2C_ADDR 0x3a	/* 0x74 >> 1*/
 #define KSV_READ_SIZE 0xf	/* 0x6803b - 0x6802c */
 #define HDCP_MAX_AUX_TRANSACTION_SIZE 16
--- a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/ppevvmath.h
+++ b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/ppevvmath.h
@@ -22,12 +22,18 @@
  */
 #include <asm/div64.h>
 
-#define SHIFT_AMOUNT 16 /* We multiply all original integers with 2^SHIFT_AMOUNT to get the fInt representation */
+enum ppevvmath_constants {
+	/* We multiply all original integers with 2^SHIFT_AMOUNT to get the fInt representation */
+	SHIFT_AMOUNT	= 16,
 
-#define PRECISION 5 /* Change this value to change the number of decimal places in the final output - 5 is a good default */
+	/* Change this value to change the number of decimal places in the final output - 5 is a good default */
+	PRECISION	=  5,
 
-#define SHIFTED_2 (2 << SHIFT_AMOUNT)
-#define MAX (1 << (SHIFT_AMOUNT - 1)) - 1 /* 32767 - Might change in the future */
+	SHIFTED_2	= (2 << SHIFT_AMOUNT),
+
+	/* 32767 - Might change in the future */
+	MAX		= (1 << (SHIFT_AMOUNT - 1)) - 1,
+};
 
 /* -------------------------------------------------------------------------------
  * NEW TYPE - fINT
--- a/drivers/gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c
@@ -2081,7 +2081,9 @@ static int sienna_cichlid_display_disabl
 	return ret;
 }
 
+#ifndef MAX
 #define MAX(a, b)	((a) > (b) ? (a) : (b))
+#endif
 
 static int sienna_cichlid_update_pcie_parameters(struct smu_context *smu,
 						 uint8_t pcie_gen_cap,
--- a/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_0_ppt.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_0_ppt.c
@@ -1255,7 +1255,10 @@ static int smu_v13_0_0_get_thermal_tempe
 	return 0;
 }
 
+#ifndef MAX
 #define MAX(a, b)	((a) > (b) ? (a) : (b))
+#endif
+
 static ssize_t smu_v13_0_0_get_gpu_metrics(struct smu_context *smu,
 					   void **table)
 {
--- a/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_7_ppt.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_7_ppt.c
@@ -1263,7 +1263,10 @@ static int smu_v13_0_7_get_thermal_tempe
 	return 0;
 }
 
+#ifndef MAX
 #define MAX(a, b)	((a) > (b) ? (a) : (b))
+#endif
+
 static ssize_t smu_v13_0_7_get_gpu_metrics(struct smu_context *smu,
 					   void **table)
 {
--- a/drivers/gpu/drm/radeon/evergreen_cs.c
+++ b/drivers/gpu/drm/radeon/evergreen_cs.c
@@ -33,8 +33,10 @@
 #include "evergreen_reg_safe.h"
 #include "cayman_reg_safe.h"
 
+#ifndef MIN
 #define MAX(a,b)                   (((a)>(b))?(a):(b))
 #define MIN(a,b)                   (((a)<(b))?(a):(b))
+#endif
 
 #define REG_SAFE_BM_SIZE ARRAY_SIZE(evergreen_reg_safe_bm)
 
--- a/drivers/hwmon/adt7475.c
+++ b/drivers/hwmon/adt7475.c
@@ -23,23 +23,23 @@
 #include <linux/util_macros.h>
 
 /* Indexes for the sysfs hooks */
-
-#define INPUT		0
-#define MIN		1
-#define MAX		2
-#define CONTROL		3
-#define OFFSET		3
-#define AUTOMIN		4
-#define THERM		5
-#define HYSTERSIS	6
-
+enum adt_sysfs_id {
+	INPUT		= 0,
+	MIN		= 1,
+	MAX		= 2,
+	CONTROL		= 3,
+	OFFSET		= 3,	// Dup
+	AUTOMIN		= 4,
+	THERM		= 5,
+	HYSTERSIS	= 6,
 /*
  * These are unique identifiers for the sysfs functions - unlike the
  * numbers above, these are not also indexes into an array
  */
+	ALARM		= 9,
+	FAULT		= 10,
+};
 
-#define ALARM		9
-#define FAULT		10
 
 /* 7475 Common Registers */
 
--- a/drivers/media/dvb-frontends/stv0367_priv.h
+++ b/drivers/media/dvb-frontends/stv0367_priv.h
@@ -25,8 +25,11 @@
 #endif
 
 /* MACRO definitions */
+#ifndef MIN
 #define MAX(X, Y) ((X) >= (Y) ? (X) : (Y))
 #define MIN(X, Y) ((X) <= (Y) ? (X) : (Y))
+#endif
+
 #define INRANGE(X, Y, Z) \
 	((((X) <= (Y)) && ((Y) <= (Z))) || \
 	(((Z) <= (Y)) && ((Y) <= (X))) ? 1 : 0)
--- a/drivers/net/fjes/fjes_main.c
+++ b/drivers/net/fjes/fjes_main.c
@@ -14,9 +14,7 @@
 #include "fjes.h"
 #include "fjes_trace.h"
 
-#define MAJ 1
-#define MIN 2
-#define DRV_VERSION __stringify(MAJ) "." __stringify(MIN)
+#define DRV_VERSION "1.2"
 #define DRV_NAME	"fjes"
 char fjes_driver_name[] = DRV_NAME;
 char fjes_driver_version[] = DRV_VERSION;
--- a/drivers/nfc/pn544/i2c.c
+++ b/drivers/nfc/pn544/i2c.c
@@ -126,8 +126,6 @@ struct pn544_i2c_fw_secure_blob {
 #define PN544_FW_CMD_RESULT_COMMAND_REJECTED 0xE0
 #define PN544_FW_CMD_RESULT_CHUNK_ERROR 0xE6
 
-#define MIN(X, Y) ((X) < (Y) ? (X) : (Y))
-
 #define PN544_FW_WRITE_BUFFER_MAX_LEN 0x9f7
 #define PN544_FW_I2C_MAX_PAYLOAD PN544_HCI_I2C_LLC_MAX_SIZE
 #define PN544_FW_I2C_WRITE_FRAME_HEADER_LEN 8
--- a/drivers/platform/x86/sony-laptop.c
+++ b/drivers/platform/x86/sony-laptop.c
@@ -757,7 +757,6 @@ static union acpi_object *__call_snc_met
 	return result;
 }
 
-#define MIN(a, b)	(a > b ? b : a)
 static int sony_nc_buffer_call(acpi_handle handle, char *name, u64 *value,
 		void *buffer, size_t buflen)
 {
--- a/drivers/scsi/isci/init.c
+++ b/drivers/scsi/isci/init.c
@@ -65,11 +65,7 @@
 #include "task.h"
 #include "probe_roms.h"
 
-#define MAJ 1
-#define MIN 2
-#define BUILD 0
-#define DRV_VERSION __stringify(MAJ) "." __stringify(MIN) "." \
-	__stringify(BUILD)
+#define DRV_VERSION "1.2.0"
 
 MODULE_VERSION(DRV_VERSION);
 
--- a/drivers/staging/media/atomisp/pci/hive_isp_css_include/math_support.h
+++ b/drivers/staging/media/atomisp/pci/hive_isp_css_include/math_support.h
@@ -31,11 +31,6 @@
 /* A => B */
 #define IMPLIES(a, b)        (!(a) || (b))
 
-/* for preprocessor and array sizing use MIN and MAX
-   otherwise use min and max */
-#define MAX(a, b)            (((a) > (b)) ? (a) : (b))
-#define MIN(a, b)            (((a) < (b)) ? (a) : (b))
-
 #define ROUND_DIV(a, b)      (((b) != 0) ? ((a) + ((b) >> 1)) / (b) : 0)
 #define CEIL_DIV(a, b)       (((b) != 0) ? ((a) + (b) - 1) / (b) : 0)
 #define CEIL_MUL(a, b)       (CEIL_DIV(a, b) * (b))
--- a/include/linux/minmax.h
+++ b/include/linux/minmax.h
@@ -274,6 +274,8 @@ static inline bool in_range32(u32 val, u
  * Use these carefully: no type checking, and uses the arguments
  * multiple times. Use for obvious constants only.
  */
+#define MIN(a,b) __cmp(min,a,b)
+#define MAX(a,b) __cmp(max,a,b)
 #define MIN_T(type,a,b) __cmp(min,(type)(a),(type)(b))
 #define MAX_T(type,a,b) __cmp(max,(type)(a),(type)(b))
 
--- a/kernel/trace/preemptirq_delay_test.c
+++ b/kernel/trace/preemptirq_delay_test.c
@@ -34,8 +34,6 @@ MODULE_PARM_DESC(cpu_affinity, "Cpu num
 
 static struct completion done;
 
-#define MIN(x, y) ((x) < (y) ? (x) : (y))
-
 static void busy_wait(ulong time)
 {
 	u64 start, end;
--- a/lib/btree.c
+++ b/lib/btree.c
@@ -43,7 +43,6 @@
 #include <linux/slab.h>
 #include <linux/module.h>
 
-#define MAX(a, b) ((a) > (b) ? (a) : (b))
 #define NODESIZE MAX(L1_CACHE_BYTES, 128)
 
 struct btree_geo {
--- a/lib/decompress_unlzma.c
+++ b/lib/decompress_unlzma.c
@@ -37,7 +37,9 @@
 
 #include <linux/decompress/mm.h>
 
+#ifndef MIN
 #define	MIN(a, b) (((a) < (b)) ? (a) : (b))
+#endif
 
 static long long INIT read_int(unsigned char *ptr, int size)
 {
--- a/mm/zsmalloc.c
+++ b/mm/zsmalloc.c
@@ -123,7 +123,6 @@
 #define ISOLATED_BITS	3
 #define MAGIC_VAL_BITS	8
 
-#define MAX(a, b) ((a) >= (b) ? (a) : (b))
 /* ZS_MIN_ALLOC_SIZE must be multiple of ZS_ALIGN */
 #define ZS_MIN_ALLOC_SIZE \
 	MAX(32, (ZS_MAX_PAGES_PER_ZSPAGE << PAGE_SHIFT >> OBJ_INDEX_BITS))
--- a/tools/testing/selftests/seccomp/seccomp_bpf.c
+++ b/tools/testing/selftests/seccomp/seccomp_bpf.c
@@ -60,7 +60,9 @@
 #define SKIP(s, ...)	XFAIL(s, ##__VA_ARGS__)
 #endif
 
+#ifndef MIN
 #define MIN(X, Y) ((X) < (Y) ? (X) : (Y))
+#endif
 
 #ifndef PR_SET_PTRACER
 # define PR_SET_PTRACER 0x59616d61
--- a/tools/testing/selftests/vm/mremap_test.c
+++ b/tools/testing/selftests/vm/mremap_test.c
@@ -22,7 +22,9 @@
 #define VALIDATION_DEFAULT_THRESHOLD 4	/* 4MB */
 #define VALIDATION_NO_THRESHOLD 0	/* Verify the entire region */
 
+#ifndef MIN
 #define MIN(X, Y) ((X) < (Y) ? (X) : (Y))
+#endif
 
 struct config {
 	unsigned long long src_alignment;

[PATCH 6.1 72/73] minmax: add a few more MIN_T/MAX_T users

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Linus Torvalds <torvalds@linux-foundation.org>

commit 4477b39c32fdc03363affef4b11d48391e6dc9ff upstream.

Commit 3a7e02c040b1 ("minmax: avoid overly complicated constant
expressions in VM code") added the simpler MIN_T/MAX_T macros in order
to avoid some excessive expansion from the rather complicated regular
min/max macros.

The complexity of those macros stems from two issues:

 (a) trying to use them in situations that require a C constant
     expression (in static initializers and for array sizes)

 (b) the type sanity checking

and MIN_T/MAX_T avoids both of these issues.

Now, in the whole (long) discussion about all this, it was pointed out
that the whole type sanity checking is entirely unnecessary for
min_t/max_t which get a fixed type that the comparison is done in.

But that still leaves min_t/max_t unnecessarily complicated due to
worries about the C constant expression case.

However, it turns out that there really aren't very many cases that use
min_t/max_t for this, and we can just force-convert those.

This does exactly that.

Which in turn will then allow for much simpler implementations of
min_t()/max_t().  All the usual "macros in all upper case will evaluate
the arguments multiple times" rules apply.

We should do all the same things for the regular min/max() vs MIN/MAX()
cases, but that has the added complexity of various drivers defining
their own local versions of MIN/MAX, so that needs another level of
fixes first.

Link: https://lore.kernel.org/all/b47fad1d0cf8449886ad148f8c013dae@AcuMS.aculab.com/
Cc: David Laight <David.Laight@aculab.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Eliav Farber <farbere@amazon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 arch/x86/mm/pgtable.c                             |    2 +-
 drivers/edac/sb_edac.c                            |    4 ++--
 drivers/gpu/drm/drm_color_mgmt.c                  |    2 +-
 drivers/md/dm-integrity.c                         |    2 +-
 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c |    2 +-
 net/ipv4/proc.c                                   |    2 +-
 net/ipv6/proc.c                                   |    2 +-
 7 files changed, 8 insertions(+), 8 deletions(-)

--- a/arch/x86/mm/pgtable.c
+++ b/arch/x86/mm/pgtable.c
@@ -107,7 +107,7 @@ static inline void pgd_list_del(pgd_t *p
 #define UNSHARED_PTRS_PER_PGD				\
 	(SHARED_KERNEL_PMD ? KERNEL_PGD_BOUNDARY : PTRS_PER_PGD)
 #define MAX_UNSHARED_PTRS_PER_PGD			\
-	max_t(size_t, KERNEL_PGD_BOUNDARY, PTRS_PER_PGD)
+	MAX_T(size_t, KERNEL_PGD_BOUNDARY, PTRS_PER_PGD)
 
 
 static void pgd_set_mm(pgd_t *pgd, struct mm_struct *mm)
--- a/drivers/edac/sb_edac.c
+++ b/drivers/edac/sb_edac.c
@@ -109,8 +109,8 @@ static const u32 knl_interleave_list[] =
 	0x104, 0x10c, 0x114, 0x11c,   /* 20-23 */
 };
 #define MAX_INTERLEAVE							\
-	(max_t(unsigned int, ARRAY_SIZE(sbridge_interleave_list),	\
-	       max_t(unsigned int, ARRAY_SIZE(ibridge_interleave_list),	\
+	(MAX_T(unsigned int, ARRAY_SIZE(sbridge_interleave_list),	\
+	       MAX_T(unsigned int, ARRAY_SIZE(ibridge_interleave_list),	\
 		     ARRAY_SIZE(knl_interleave_list))))
 
 struct interleave_pkg {
--- a/drivers/gpu/drm/drm_color_mgmt.c
+++ b/drivers/gpu/drm/drm_color_mgmt.c
@@ -532,7 +532,7 @@ int drm_plane_create_color_properties(st
 {
 	struct drm_device *dev = plane->dev;
 	struct drm_property *prop;
-	struct drm_prop_enum_list enum_list[max_t(int, DRM_COLOR_ENCODING_MAX,
+	struct drm_prop_enum_list enum_list[MAX_T(int, DRM_COLOR_ENCODING_MAX,
 						       DRM_COLOR_RANGE_MAX)];
 	int i, len;
 
--- a/drivers/md/dm-integrity.c
+++ b/drivers/md/dm-integrity.c
@@ -2618,7 +2618,7 @@ static void do_journal_write(struct dm_i
 				    unlikely(from_replay) &&
 #endif
 				    ic->internal_hash) {
-					char test_tag[max_t(size_t, HASH_MAX_DIGESTSIZE, MAX_TAG_SIZE)];
+					char test_tag[MAX_T(size_t, HASH_MAX_DIGESTSIZE, MAX_TAG_SIZE)];
 
 					integrity_sector_checksum(ic, sec + ((l - j) << ic->sb->log2_sectors_per_block),
 								  (char *)access_journal_data(ic, i, l), test_tag);
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -2827,7 +2827,7 @@ static void stmmac_dma_interrupt(struct
 	u32 channels_to_check = tx_channel_count > rx_channel_count ?
 				tx_channel_count : rx_channel_count;
 	u32 chan;
-	int status[max_t(u32, MTL_MAX_TX_QUEUES, MTL_MAX_RX_QUEUES)];
+	int status[MAX_T(u32, MTL_MAX_TX_QUEUES, MTL_MAX_RX_QUEUES)];
 
 	/* Make sure we never check beyond our status buffer. */
 	if (WARN_ON_ONCE(channels_to_check > ARRAY_SIZE(status)))
--- a/net/ipv4/proc.c
+++ b/net/ipv4/proc.c
@@ -43,7 +43,7 @@
 #include <net/sock.h>
 #include <net/raw.h>
 
-#define TCPUDP_MIB_MAX max_t(u32, UDP_MIB_MAX, TCP_MIB_MAX)
+#define TCPUDP_MIB_MAX MAX_T(u32, UDP_MIB_MAX, TCP_MIB_MAX)
 
 /*
  *	Report socket allocation statistics [mea@utu.fi]
--- a/net/ipv6/proc.c
+++ b/net/ipv6/proc.c
@@ -27,7 +27,7 @@
 #include <net/ipv6.h>
 
 #define MAX4(a, b, c, d) \
-	max_t(u32, max_t(u32, a, b), max_t(u32, c, d))
+	MAX_T(u32, MAX_T(u32, a, b), MAX_T(u32, c, d))
 #define SNMP_MIB_MAX MAX4(UDP_MIB_MAX, TCP_MIB_MAX, \
 			IPSTATS_MIB_MAX, ICMP_MIB_MAX)
 

[PATCH 6.1 73/73] minmax: simplify and clarify min_t()/max_t() implementation

[Greg Kroah-Hartman]

6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Linus Torvalds <torvalds@linux-foundation.org>

commit 017fa3e89187848fd056af757769c9e66ac3e93d upstream.

This simplifies the min_t() and max_t() macros by no longer making them
work in the context of a C constant expression.

That means that you can no longer use them for static initializers or
for array sizes in type definitions, but there were only a couple of
such uses, and all of them were converted (famous last words) to use
MIN_T/MAX_T instead.

Cc: David Laight <David.Laight@aculab.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 include/linux/minmax.h |   19 +++++++++++--------
 1 file changed, 11 insertions(+), 8 deletions(-)

--- a/include/linux/minmax.h
+++ b/include/linux/minmax.h
@@ -45,17 +45,20 @@
 
 #define __cmp(op, x, y)	((x) __cmp_op_##op (y) ? (x) : (y))
 
-#define __cmp_once(op, x, y, unique_x, unique_y) ({	\
-	typeof(x) unique_x = (x);			\
-	typeof(y) unique_y = (y);			\
+#define __cmp_once_unique(op, type, x, y, ux, uy) \
+	({ type ux = (x); type uy = (y); __cmp(op, ux, uy); })
+
+#define __cmp_once(op, type, x, y) \
+	__cmp_once_unique(op, type, x, y, __UNIQUE_ID(x_), __UNIQUE_ID(y_))
+
+#define __careful_cmp_once(op, x, y) ({			\
 	static_assert(__types_ok(x, y),			\
 		#op "(" #x ", " #y ") signedness error, fix types or consider u" #op "() before " #op "_t()"); \
-	__cmp(op, unique_x, unique_y); })
+	__cmp_once(op, __auto_type, x, y); })
 
 #define __careful_cmp(op, x, y)					\
 	__builtin_choose_expr(__is_constexpr((x) - (y)),	\
-		__cmp(op, x, y),				\
-		__cmp_once(op, x, y, __UNIQUE_ID(__x), __UNIQUE_ID(__y)))
+		__cmp(op, x, y), __careful_cmp_once(op, x, y))
 
 #define __clamp(val, lo, hi)	\
 	((val) >= (hi) ? (hi) : ((val) <= (lo) ? (lo) : (val)))
@@ -158,7 +161,7 @@
  * @x: first value
  * @y: second value
  */
-#define min_t(type, x, y)	__careful_cmp(min, (type)(x), (type)(y))
+#define min_t(type, x, y) __cmp_once(min, type, x, y)
 
 /**
  * max_t - return maximum of two values, using the specified type
@@ -166,7 +169,7 @@
  * @x: first value
  * @y: second value
  */
-#define max_t(type, x, y)	__careful_cmp(max, (type)(x), (type)(y))
+#define max_t(type, x, y) __cmp_once(max, type, x, y)
 
 /*
  * Do not check the array parameter using __must_be_array().

Re: [PATCH 6.1 07/73] HID: multitouch: Get the contact ID from HID_DG_TRANSDUCER_INDEX fields in case of Apple Touch Bar

[Aditya Garg]

On 30/09/25 8:17 pm, Greg Kroah-Hartman wrote:
> 6.1-stable review patch.  If anyone has any objections, please let me know.
> 
> ------------------
> 
> From: Kerem Karabay <kekrby@gmail.com>
> 
> [ Upstream commit f41d736acc039d86512951f4e874b0f5e666babf ]
> 
> In Apple Touch Bar, the contact ID is contained in fields with the
> HID_DG_TRANSDUCER_INDEX usage rather than HID_DG_CONTACTID, thus differing
> from the HID spec. Add a quirk for the same.
> 

All these hid-multitouch patches were a part of appletbdrm driver upstreamed since kernel 6.15.

Due to 2 different trees, and some delay in review by hid maintainers, these got upstreamed in 6.17.

So, in case you wish to backport to stable, IMO, backport only till 6.15, which in practicality is just 6.16 as of today.

Re: [PATCH 6.1 00/73] 6.1.155-rc1 review

[Florian Fainelli]

On 9/30/25 07:47, Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 6.1.155 release.
> There are 73 patches in this series, all will be posted as a response
> to this one.  If anyone has any issues with these being applied, please
> let me know.
> 
> Responses should be made by Thu, 02 Oct 2025 14:37:59 +0000.
> Anything received after that time might be too late.
> 
> The whole patch series can be found in one patch at:
> 	https://www.kernel.org/pub/linux/kernel/v6.x/stable-review/patch-6.1.155-rc1.gz
> or in the git tree and branch at:
> 	git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-6.1.y
> and the diffstat can be found below.
> 
> thanks,
> 
> greg k-h

On ARCH_BRCMSTB using 32-bit and 64-bit ARM kernels, build tested on 
BMIPS_GENERIC:

Tested-by: Florian Fainelli <florian.fainelli@broadcom.com>
-- 
Florian

Re: [PATCH 6.1 00/73] 6.1.155-rc1 review

[Peter Schneider]

Am 30.09.2025 um 16:47 schrieb Greg Kroah-Hartman:
> This is the start of the stable review cycle for the 6.1.155 release.
> There are 73 patches in this series, all will be posted as a response
> to this one.  If anyone has any issues with these being applied, please
> let me know.

Builds, boots and works on my 2-socket Ivy Bridge Xeon E5-2697 v2 server. No dmesg oddities or regressions found.

Tested-by: Peter Schneider <pschneider1968@googlemail.com>


Beste Grüße,
Peter Schneider

-- 
Climb the mountain not to plant your flag, but to embrace the challenge,
enjoy the air and behold the view. Climb it so you can see the world,
not so the world can see you.                    -- David McCullough Jr.

OpenPGP:  0xA3828BD796CCE11A8CADE8866E3A92C92C3FF244
Download: https://www.peters-netzplatz.de/download/pschneider1968_pub.asc
https://keys.mailvelope.com/pks/lookup?op=get&search=pschneider1968@googlemail.com
https://keys.mailvelope.com/pks/lookup?op=get&search=pschneider1968@gmail.com

Re: 6.1.155-rc1 review

[Brett A C Sheffield]

# Librecast Test Results

010/010 [ OK ] libmld
120/120 [ OK ] liblibrecast

CPU/kernel: Linux auntie 6.1.155-rc1-00074-g8a8cf3637b17 #94 SMP PREEMPT_DYNAMIC Tue Sep 30 15:50:11 -00 2025 x86_64 AMD Ryzen 9 9950X 16-Core Processor AuthenticAMD GNU/Linux

Tested-by: Brett A C Sheffield <bacs@librecast.net>

Re: [PATCH 6.1 00/73] 6.1.155-rc1 review

[Ron Economos]

On 9/30/25 07:47, Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 6.1.155 release.
> There are 73 patches in this series, all will be posted as a response
> to this one.  If anyone has any issues with these being applied, please
> let me know.
>
> Responses should be made by Thu, 02 Oct 2025 14:37:59 +0000.
> Anything received after that time might be too late.
>
> The whole patch series can be found in one patch at:
> 	https://www.kernel.org/pub/linux/kernel/v6.x/stable-review/patch-6.1.155-rc1.gz
> or in the git tree and branch at:
> 	git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-6.1.y
> and the diffstat can be found below.
>
> thanks,
>
> greg k-h

Built and booted successfully on RISC-V RV64 (HiFive Unmatched).

Tested-by: Ron Economos <re@w6rz.net>

Re: [PATCH 6.1 00/73] 6.1.155-rc1 review

[Jon Hunter]

On Tue, 30 Sep 2025 16:47:04 +0200, Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 6.1.155 release.
> There are 73 patches in this series, all will be posted as a response
> to this one.  If anyone has any issues with these being applied, please
> let me know.
> 
> Responses should be made by Thu, 02 Oct 2025 14:37:59 +0000.
> Anything received after that time might be too late.
> 
> The whole patch series can be found in one patch at:
> 	https://www.kernel.org/pub/linux/kernel/v6.x/stable-review/patch-6.1.155-rc1.gz
> or in the git tree and branch at:
> 	git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-6.1.y
> and the diffstat can be found below.
> 
> thanks,
> 
> greg k-h

All tests passing for Tegra ...

Test results for stable-v6.1:
    10 builds:	10 pass, 0 fail
    28 boots:	28 pass, 0 fail
    119 tests:	119 pass, 0 fail

Linux version:	6.1.155-rc1-g8a8cf3637b17
Boards tested:	tegra124-jetson-tk1, tegra186-p2771-0000,
                tegra186-p3509-0000+p3636-0001, tegra194-p2972-0000,
                tegra194-p3509-0000+p3668-0000, tegra20-ventana,
                tegra210-p2371-2180, tegra210-p3450-0000,
                tegra30-cardhu-a04

Tested-by: Jon Hunter <jonathanh@nvidia.com>

Jon

Re: [PATCH 6.1 00/73] 6.1.155-rc1 review

[Mark Brown]

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On Tue, Sep 30, 2025 at 04:47:04PM +0200, Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 6.1.155 release.
> There are 73 patches in this series, all will be posted as a response
> to this one.  If anyone has any issues with these being applied, please
> let me know.

Tested-by: Mark Brown <broonie@kernel.org>

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Re: [PATCH 6.1 00/73] 6.1.155-rc1 review

[Naresh Kamboju]

On Tue, 30 Sept 2025 at 20:48, Greg Kroah-Hartman
<gregkh@linuxfoundation.org> wrote:
>
> This is the start of the stable review cycle for the 6.1.155 release.
> There are 73 patches in this series, all will be posted as a response
> to this one.  If anyone has any issues with these being applied, please
> let me know.
>
> Responses should be made by Thu, 02 Oct 2025 14:37:59 +0000.
> Anything received after that time might be too late.
>
> The whole patch series can be found in one patch at:
>         https://www.kernel.org/pub/linux/kernel/v6.x/stable-review/patch-6.1.155-rc1.gz
> or in the git tree and branch at:
>         git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-6.1.y
> and the diffstat can be found below.
>
> thanks,
>
> greg k-h


Results from Linaro’s test farm.
No regressions on arm64, arm, x86_64, and i386.

Tested-by: Linux Kernel Functional Testing <lkft@linaro.org>

## Build
* kernel: 6.1.155-rc1
* git: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git
* git commit: 8a8cf3637b176b7508c3f109c6234a1a6e86d9d2
* git describe: v6.1.154-74-g8a8cf3637b17
a* test details:
https://qa-reports.linaro.org/lkft/linux-stable-rc-linux-6.1.y/build/v6.1.154-74-g8a8cf3637b17

## Test Regressions (compared to v6.1.153-62-gbd7dff6dbcf5)

## Metric Regressions (compared to v6.1.153-62-gbd7dff6dbcf5)

## Test Fixes (compared to v6.1.153-62-gbd7dff6dbcf5)

## Metric Fixes (compared to v6.1.153-62-gbd7dff6dbcf5)

## Test result summary
total: 225710, pass: 209239, fail: 4868, skip: 11344, xfail: 259

## Build Summary
* arc: 5 total, 5 passed, 0 failed
* arm: 135 total, 135 passed, 0 failed
* arm64: 44 total, 44 passed, 0 failed
* i386: 23 total, 23 passed, 0 failed
* mips: 26 total, 25 passed, 1 failed
* parisc: 4 total, 4 passed, 0 failed
* powerpc: 32 total, 31 passed, 1 failed
* riscv: 11 total, 11 passed, 0 failed
* s390: 14 total, 14 passed, 0 failed
* sh: 10 total, 10 passed, 0 failed
* sparc: 7 total, 7 passed, 0 failed
* x86_64: 35 total, 35 passed, 0 failed

## Test suites summary
* boot
* commands
* kselftest-arm64
* kselftest-breakpoints
* kselftest-capabilities
* kselftest-clone3
* kselftest-core
* kselftest-cpu-hotplug
* kselftest-exec
* kselftest-fpu
* kselftest-futex
* kselftest-intel_pstate
* kselftest-kcmp
* kselftest-kvm
* kselftest-livepatch
* kselftest-membarrier
* kselftest-mincore
* kselftest-mqueue
* kselftest-openat2
* kselftest-ptrace
* kselftest-rseq
* kselftest-rtc
* kselftest-sigaltstack
* kselftest-size
* kselftest-timers
* kselftest-tmpfs
* kselftest-tpm2
* kselftest-user_events
* kselftest-vDSO
* kselftest-x86
* kunit
* kvm-unit-tests
* lava
* libgpiod
* libhugetlbfs
* log-parser-boot
* log-parser-build-clang
* log-parser-build-gcc
* log-parser-test
* ltp-capability
* ltp-commands
* ltp-containers
* ltp-controllers
* ltp-cpuhotplug
* ltp-crypto
* ltp-cve
* ltp-dio
* ltp-fcntl-locktests
* ltp-fs
* ltp-fs_bind
* ltp-fs_perms_simple
* ltp-hugetlb
* ltp-math
* ltp-mm
* ltp-nptl
* ltp-pty
* ltp-sched
* ltp-smoke
* ltp-syscalls
* ltp-tracing
* modules
* rcutorture

--
Linaro LKFT
https://lkft.linaro.org

Re: [PATCH 6.1 00/73] 6.1.155-rc1 review

[Shuah Khan]

On 9/30/25 08:47, Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 6.1.155 release.
> There are 73 patches in this series, all will be posted as a response
> to this one.  If anyone has any issues with these being applied, please
> let me know.
> 
> Responses should be made by Thu, 02 Oct 2025 14:37:59 +0000.
> Anything received after that time might be too late.
> 
> The whole patch series can be found in one patch at:
> 	https://www.kernel.org/pub/linux/kernel/v6.x/stable-review/patch-6.1.155-rc1.gz
> or in the git tree and branch at:
> 	git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-6.1.y
> and the diffstat can be found below.
> 
> thanks,
> 
> greg k-h
> 

Compiled and booted on my test system. No dmesg regressions.

Tested-by: Shuah Khan <skhan@linuxfoundation.org>

thanks,
-- Shuah

Re: [PATCH 6.1 00/73] 6.1.155-rc1 review

[Miguel Ojeda]

On Tue, 30 Sep 2025 16:47:04 +0200 Greg Kroah-Hartman <gregkh@linuxfoundation.org> wrote:
>
> This is the start of the stable review cycle for the 6.1.155 release.
> There are 73 patches in this series, all will be posted as a response
> to this one.  If anyone has any issues with these being applied, please
> let me know.
>
> Responses should be made by Thu, 02 Oct 2025 14:37:59 +0000.
> Anything received after that time might be too late.

Boot-tested under QEMU for Rust x86_64:

Tested-by: Miguel Ojeda <ojeda@kernel.org>

Thanks!

Cheers,
Miguel

Re: [PATCH 6.1 07/73] HID: multitouch: Get the contact ID from HID_DG_TRANSDUCER_INDEX fields in case of Apple Touch Bar

[Greg Kroah-Hartman]

On Tue, Sep 30, 2025 at 08:53:35PM +0530, Aditya Garg wrote:
> 
> 
> On 30/09/25 8:17 pm, Greg Kroah-Hartman wrote:
> > 6.1-stable review patch.  If anyone has any objections, please let me know.
> > 
> > ------------------
> > 
> > From: Kerem Karabay <kekrby@gmail.com>
> > 
> > [ Upstream commit f41d736acc039d86512951f4e874b0f5e666babf ]
> > 
> > In Apple Touch Bar, the contact ID is contained in fields with the
> > HID_DG_TRANSDUCER_INDEX usage rather than HID_DG_CONTACTID, thus differing
> > from the HID spec. Add a quirk for the same.
> > 
> 
> All these hid-multitouch patches were a part of appletbdrm driver upstreamed since kernel 6.15.
> 
> Due to 2 different trees, and some delay in review by hid maintainers, these got upstreamed in 6.17.
> 
> So, in case you wish to backport to stable, IMO, backport only till 6.15, which in practicality is just 6.16 as of today.

Thanks, I'll drop this from everything except the 6.16.y tree.

greg k-h

Re: [PATCH 6.1 00/73] 6.1.155-rc1 review

[Pavel Machek]

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Hi!

> This is the start of the stable review cycle for the 6.1.155 release.
> There are 73 patches in this series, all will be posted as a response
> to this one.  If anyone has any issues with these being applied, please
> let me know.

CIP testing did not find any problems here:

https://gitlab.com/cip-project/cip-testing/linux-stable-rc-ci/-/tree/linux-6.1.y

Tested-by: Pavel Machek (CIP) <pavel@denx.de>

Best regards,
                                                                Pavel
-- 
In cooperation with DENX Software Engineering GmbH, HRB 165235 Munich,
Office: Kirchenstr.5, D-82194 Groebenzell, Germany

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