Commit graph

1,463,462 commits

Author SHA1 Message Date
Ethan Carter Edwards
ae974ca6f0 fanotify: Fix spelling mistake "enforecement" -> "enforcement"
There is a spelling mistake in a comment. Fix it.

Signed-off-by: Ethan Carter Edwards <ethan@ethancedwards.com>
Link: https://patch.msgid.link/20260418-fanotify-typo-v1-1-03ea48cb44ba@ethancedwards.com
Signed-off-by: Jan Kara <jack@suse.cz>
2026-04-20 09:40:32 +02:00
Michael Bommarito
ec54093e6a xfrm: ah: account for ESN high bits in async callbacks
AH allocates its temporary auth/ICV layout differently when ESN is enabled:
the async ahash setup appends a 4-byte seqhi slot before the ICV or
auth_data area, but the async completion callbacks still reconstruct the
temporary layout as if seqhi were absent.

With an async AH implementation selected, that makes AH copy or compare
the wrong bytes on both the IPv4 and IPv6 paths. In UML repro on IPv4 AH
with ESN and forced async hmac(sha1), ping fails with 100% packet loss,
and the callback logs show the pre-fix drift:

  ah4 output_done: esn=1 err=0 icv_off=20 expected_off=24
  ah4 input_done: esn=1 auth_off=20 expected_auth_off=24 icv_off=32 expected_icv_off=36

Reconstruct the callback-side layout the same way the setup path built it
by skipping the ESN seqhi slot before locating the saved auth_data or ICV.
Per RFC 4302, the ESN high-order 32 bits participate in the AH ICV
computation, so the async callbacks must account for the seqhi slot.

Post-fix, the same IPv4 AH+ESN+forced-async-hmac(sha1) UML repro shows
the corrected offset (ah4 output_done: esn=1 err=0 icv_off=24
expected_off=24) and ping succeeds; net/ipv4/ah4.o and net/ipv6/ah6.o
build clean at W=1. IPv6 AH+ESN was not exercised at runtime, and the
change has not been tested against a real async hardware AH engine.

Fixes: d4d573d033 ("{IPv4,xfrm} Add ESN support for AH egress part")
Fixes: d8b2a8600b ("{IPv4,xfrm} Add ESN support for AH ingress part")
Fixes: 26dd70c3fa ("{IPv6,xfrm} Add ESN support for AH egress part")
Fixes: 8d6da6f325 ("{IPv6,xfrm} Add ESN support for AH ingress part")
Cc: stable@vger.kernel.org
Assisted-by: Codex:gpt-5-4
Assisted-by: Claude:claude-opus-4-7
Signed-off-by: Michael Bommarito <michael.bommarito@gmail.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2026-04-20 09:28:34 +02:00
Ingo Molnar
216fe4b3e0 Merge branch into tip/master: 'timers/clocksource'
# New commits in timers/clocksource:
    68ed094971 ("clocksource/drivers/timer-of: Make the code compatible with modules")
    2423405880 ("clocksource/drivers/mmio: Make the code compatible with modules")
    fed9f727cc ("clocksource/drivers/sun5i: Handle error returns from devm_reset_control_get_optional_exclusive()")
    045a9dac7e ("clocksource/drivers/timer-rtl-otto: Make rttm_cs variable static")
    b385caf918 ("dt-bindings: timer: fsl,imxgpt: add compatible string fsl,imx25-epit")

Signed-off-by: Ingo Molnar <mingo@kernel.org>
2026-04-20 09:25:41 +02:00
Ingo Molnar
3d02b74bdb Merge branch into tip/master: 'timers/urgent'
# New commits in timers/urgent:
    4096fd0e8e ("clockevents: Add missing resets of the next_event_forced flag")

Signed-off-by: Ingo Molnar <mingo@kernel.org>
2026-04-20 09:25:41 +02:00
Ingo Molnar
52cfe57e40 Merge branch into tip/master: 'core/urgent'
# New commits in core/urgent:
    7b41ff29c8 ("entry: Kill ARCH_SYSCALL_WORK_{ENTER,EXIT}")

Signed-off-by: Ingo Molnar <mingo@kernel.org>
2026-04-20 09:25:40 +02:00
Thomas Zimmermann
3f9357c30a drm/mgag200: Enable DRM_FORMAT_XRGB1555 on the primary plane
The driver already sets the format for the depth value in the XMULCTRL
register. Add the format to the other switch statements, set the helpers
for gamma correction and export the XRGB1555 in the primary plane's
format array.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://patch.msgid.link/20260415152625.101710-7-tzimmermann@suse.de
2026-04-20 09:15:57 +02:00
Thomas Zimmermann
8f18922567 drm/mgag200: Enable DRM_FORMAT_C8 on the primary plane
The driver already contains all format setting for DRM_FORMAT_C8. Set
the gamma-correction helpers and add the format to the array of plane
formats.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://patch.msgid.link/20260415152625.101710-6-tzimmermann@suse.de
2026-04-20 09:15:57 +02:00
Thomas Zimmermann
2d9bd1f58b drm/mgag200: g200se: Set hiprilvl from DRM format
Replace the deprecated cpp field from struct drm_format_info with the
format's 4CC code when setting the hiprilvl field in CRTCEXT6.

Using a bpp of 32 for RGB888 is a bit dubious, but we keep it for now
to avoid changing behavior. Otherwise, bpp could also be retrieved by
calling drm_format_info_bpp().

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://patch.msgid.link/20260415152625.101710-5-tzimmermann@suse.de
2026-04-20 09:15:57 +02:00
Thomas Zimmermann
0bfc9fbd8e drm/mgag200: Simplify offset calculation
The offset value sets the distance in bytes between two consecutive
scanlines. Reduce the calculation to the minimum.

According to the Matrox programming manual, Sec 4.6.5, the offset
is the scanline pitch in bits divided by 128. The field pitches[0] in
struct drm_framebuffer stores the scanline pitch in bytes, so we have
to divide by 16 only. Reducing the existing bpp-shift look-up and
offset calculations also returns exactly this for all formats.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Co-developed-by: Jocelyn Falempe <jfalempe@redhat.com>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://patch.msgid.link/20260415152625.101710-4-tzimmermann@suse.de
2026-04-20 09:15:57 +02:00
Thomas Zimmermann
8d5ffd34c1 drm/mgag200: Set scale from DRM format
Replace the deprecated cpp value from struct drm_format_info with the
format's 4CC code when setting the scale value in CRTCEXT3. While at it,
remove the scale variable and add a mask constant.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://patch.msgid.link/20260415152625.101710-3-tzimmermann@suse.de
2026-04-20 09:15:57 +02:00
Thomas Zimmermann
44f352a2f4 drm/mgag200: Set xmulctrl from DRM format
Replace the deprecated cpp value from struct drm_format_info with the
format's 4CC code when setting the depth value in the XMULCTRL register.
Split the 16-bit case into XRGB1555 and RGB565. The default branch cannot
be taken, so remove it.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://patch.msgid.link/20260415152625.101710-2-tzimmermann@suse.de
2026-04-20 09:15:53 +02:00
Thomas Zimmermann
652f67a128 drm/ast: Support DRM_FORMAT_XRGB1555 on the primary plane
Export DRM_FORMAT_XRGB1555 in the primary plane's format array and
handle the format in the color-format updates. With this, ast is now
feature complete wrt. color-format support.

Also update the comments in the gamma-LUT code to reflect the ast
manual's terminology.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://patch.msgid.link/20260414070522.33943-5-tzimmermann@suse.de
2026-04-20 09:12:01 +02:00
Thomas Zimmermann
95ed102e9f drm/ast: Replace references to struct drm_format_info.cpp
Replace all uses of struct drm_format_info.cpp with the corresponding
4CC constant. Color-mode selection uses switch statements that branch
by cpp in several places. While at it, also name the involved variables
according to register names and replace magic values with constants.

Replace the use of *ModeIndex constants in ast_set_vbios_color_reg()
with correct register constants. The former are array indices and do
not belong into registers.

In ast_set_color_reg(), vgacra0 is independent from the color format,
so move it out from the switch statements.

There is also a flag for gamma correction in vgacra8, which currently
ast_set_color_reg() handles as part of the primary plane. The gamma LUT
and its programming is located in the CRTC. A future update should
consolidate gamma correction in the primary plane and implement the
functionality with DRM's colorop helpers.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://patch.msgid.link/20260414070522.33943-4-tzimmermann@suse.de
2026-04-20 09:12:00 +02:00
Thomas Zimmermann
adf469f2b7 drm/ast: Remove traces of DRM_FORMAT_RGB888 handling
There's some incomplete handling for DRM_FORMAT_RGB888 in the mode-
setting code. It was added by ast's original commit, which imported
the code from the user-space Xorg driver. But the hardware doesn't
support 24-bit pixel sizes. Hence remove the traces of RGB888 from
ast.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://patch.msgid.link/20260414070522.33943-3-tzimmermann@suse.de
2026-04-20 09:12:00 +02:00
Thomas Zimmermann
6033c027c8 drm/ast: Add constant for VGACR91
Register VGACR91 receives a password that enables the new mode-info
header in other registers. Replace the password's magic value with a
constant.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://patch.msgid.link/20260414070522.33943-2-tzimmermann@suse.de
2026-04-20 09:11:59 +02:00
Dmitry Torokhov
f4b369c6fe Merge branch 'next' into for-linus
Prepare input updates for 7.1 merge window.
2026-04-19 18:28:57 -07:00
Hugo Villeneuve
2ca45e57ea Input: charlieplex_keypad - add GPIO charlieplex keypad
Add support for GPIO-based charlieplex keypad, allowing to control
N^2-N keys using N GPIO lines.

Reuse matrix keypad keymap to simplify, even if there is no concept
of rows and columns in this type of keyboard.

Signed-off-by: Hugo Villeneuve <hvilleneuve@dimonoff.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Link: https://patch.msgid.link/20260312180304.3865850-5-hugo@hugovil.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2026-04-19 18:27:01 -07:00
Hugo Villeneuve
0d64bee764 dt-bindings: input: add GPIO charlieplex keypad
Add DT bindings for GPIO charlieplex keypad.

Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Hugo Villeneuve <hvilleneuve@dimonoff.com>
Link: https://patch.msgid.link/20260312180304.3865850-4-hugo@hugovil.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2026-04-19 18:27:00 -07:00
Hugo Villeneuve
906a37ba54 dt-bindings: input: add settling-time-us common property
Add common property that can be reused by other bindings.

Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Hugo Villeneuve <hvilleneuve@dimonoff.com>
Link: https://patch.msgid.link/20260312180304.3865850-3-hugo@hugovil.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2026-04-19 18:26:59 -07:00
Hugo Villeneuve
cf1f976aee dt-bindings: input: add debounce-delay-ms common property
A few bindings are already defining a debounce-delay-ms property, so
add it to the input binding to reduce redundant redefines.

Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Hugo Villeneuve <hvilleneuve@dimonoff.com>
Link: https://patch.msgid.link/20260312180304.3865850-2-hugo@hugovil.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2026-04-19 18:26:59 -07:00
Ethan Carter Edwards
2e32d2ba17 Input: imx_keypad - fix spelling mistake "Colums" -> "Columns"
There is a spelling mistake in two comments. Fix them.

Signed-off-by: Ethan Carter Edwards <ethan@ethancedwards.com>
Link: https://patch.msgid.link/20260418-imx-typo-v1-1-2a15e54ad4e7@ethancedwards.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2026-04-19 17:55:20 -07:00
Dmitry Torokhov
f5f9e07060 Input: edt-ft5x06 - fix use-after-free in debugfs teardown
The commit 68743c500c ("Input: edt-ft5x06 - use per-client debugfs
directory") removed the manual debugfs teardown, relying on the I2C core
to handle it. However, this creates a window where debugfs files are
still accessible after edt_ft5x06_ts_teardown_debugfs() frees
tsdata->raw_buffer.

To prevent a use-after-free, protect the freeing of raw_buffer with the
device mutex and set raw_buffer to NULL. The debugfs read function
already checks if raw_buffer is NULL under the same mutex, so this
safely avoids the use-after-free.

Fixes: 68743c500c ("Input: edt-ft5x06 - use per-client debugfs directory")
Cc: stable@vger.kernel.org
Link: https://patch.msgid.link/adnJicDh-bTUaWXP@google.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2026-04-19 17:54:06 -07:00
Ashutosh Desai
fb44d589bf drm/v3d: Reject empty multisync extension to prevent infinite loop
v3d_get_extensions() walks a userspace-provided singly-linked list of
ioctl extensions without any bound on the chain length. A local user
can craft a self-referential extension (ext->next == &ext) with zero
in_sync_count and out_sync_count, which bypasses the existing duplicate-
extension guard:

    if (se->in_sync_count || se->out_sync_count)
            return -EINVAL;

The guard never fires because v3d_get_multisync_post_deps() returns
immediately when count is zero, leaving both fields at zero on every
iteration. The result is an infinite loop in kernel context, blocking
the calling thread and pegging a CPU core indefinitely.

Fix this by rejecting a multisync extension where both in_sync_count
and out_sync_count are zero in v3d_get_multisync_submit_deps(). An
empty multisync carries no synchronization information and serves no
useful purpose, so returning -EINVAL for such an extension is the
correct defense against this attack vector.

Fixes: e4165ae830 ("drm/v3d: add multiple syncobjs support")
Cc: stable@vger.kernel.org
Signed-off-by: Ashutosh Desai <ashutoshdesai993@gmail.com>
Link: https://patch.msgid.link/20260415050000.3816128-1-ashutoshdesai993@gmail.com
Signed-off-by: Maíra Canal <mcanal@igalia.com>
2026-04-19 19:07:29 -03:00
Igor Korotin
79fc229e8a MAINTAINERS: add Rust I2C tree and update Igor Korotin's email
Add a git tree entry for Rust I2C development and update the e-mail
address. The tree will be used to collect patches and provide a basis
for integration and testing, including linux-next.

Signed-off-by: Igor Korotin <igor.korotin@linux.dev>
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
2026-04-20 00:05:35 +02:00
Wolfram Sang
d891635322 i2c-host for v7.1, part 2
- cx92755: convert I2C bindings to DT schema
 - mediatek: add optional bus power management during transfers
 - pxa: handle early bus busy condition
 -----BEGIN PGP SIGNATURE-----
 
 iHUEABYKAB0WIQScDfrjQa34uOld1VLaeAVmJtMtbgUCaeQfzQAKCRDaeAVmJtMt
 bhZbAP4yxgj5FEkHaKYHEsUwXfh4zUEciWcXWaSrElrkn5/79AD/fy/zjO47zKEo
 KBf6uQurXv+RCT3uwDU5QowVoYuanwo=
 =5+1V
 -----END PGP SIGNATURE-----

Merge tag 'i2c-host-7.1-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/andi.shyti/linux into i2c/for-mergewindow

i2c-host for v7.1, part 2

- cx92755: convert I2C bindings to DT schema
- mediatek: add optional bus power management during transfers
- pxa: handle early bus busy condition
2026-04-20 00:03:38 +02:00
Linus Torvalds
c1f49dea2b 7 hotfixes. 6 are cc:stable and all are for MM. Please see the
individual changelogs for details.
 -----BEGIN PGP SIGNATURE-----
 
 iHUEABYIAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCaeSA8wAKCRDdBJ7gKXxA
 jlKAAP4z9SQH3J71BVZK0pLi/9a/ISEZyJ9zIpsNi1sQ3shO/gD7BoUTQkepX5dk
 dv1YBhroYz981dgIIV3kXpIAEYnoeQc=
 =Os+z
 -----END PGP SIGNATURE-----

Merge tag 'mm-hotfixes-stable-2026-04-19-00-14' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull MM fixes from Andrew Morton:
 "7 hotfixes. 6 are cc:stable and all are for MM. Please see the
  individual changelogs for details"

* tag 'mm-hotfixes-stable-2026-04-19-00-14' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
  mm/damon/core: disallow non-power of two min_region_sz on damon_start()
  mm/vmalloc: take vmap_purge_lock in shrinker
  mm: call ->free_folio() directly in folio_unmap_invalidate()
  mm: blk-cgroup: fix use-after-free in cgwb_release_workfn()
  mm/zone_device: do not touch device folio after calling ->folio_free()
  mm/damon/core: disallow time-quota setting zero esz
  mm/mempolicy: fix weighted interleave auto sysfs name
2026-04-19 14:45:37 -07:00
Linus Torvalds
8c2bf4a2e5 Driver core fixes for 7.1-rc1
- Prevent a device from being probed before device_add() has finished
   initializing it; gate probe with a "ready_to_probe" device flag to
   avoid races with concurrent driver_register() calls
 
 - Fix a kernel-doc warning for DEV_FLAG_COUNT introduced by the above
 
 - Return -ENOTCONN from software_node_get_reference_args() when a
   referenced software node is known but not yet registered, allowing
   callers to defer probe
 
 - In sysfs_group_attrs_change_owner(), also check is_visible_const();
   missed when the const variant was introduced
 -----BEGIN PGP SIGNATURE-----
 
 iHUEABYKAB0WIQS2q/xV6QjXAdC7k+1FlHeO1qrKLgUCaePuOwAKCRBFlHeO1qrK
 LrBdAP9hcc5TBpPgbW4vdpsGgPhspz2x3Ijq0m91354RT2KISwEAx0ZHu6pvtLb/
 hW0hHvk0onL6uBbCR6629U+A/xQ79go=
 =Hdaa
 -----END PGP SIGNATURE-----

Merge tag 'driver-core-7.1-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core

Pull driver core fixes from Danilo Krummrich:

 - Prevent a device from being probed before device_add() has finished
   initializing it; gate probe with a "ready_to_probe" device flag to
   avoid races with concurrent driver_register() calls

 - Fix a kernel-doc warning for DEV_FLAG_COUNT introduced by the above

 - Return -ENOTCONN from software_node_get_reference_args() when a
   referenced software node is known but not yet registered, allowing
   callers to defer probe

 - In sysfs_group_attrs_change_owner(), also check is_visible_const();
   missed when the const variant was introduced

* tag 'driver-core-7.1-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core:
  driver core: Add kernel-doc for DEV_FLAG_COUNT enum value
  sysfs: attribute_group: Respect is_visible_const() when changing owner
  software node: return -ENOTCONN when referenced swnode is not registered yet
  driver core: Don't let a device probe until it's ready
2026-04-19 12:58:08 -07:00
Tejun Heo
e613cc2361 sched_ext: Document the ops compat strategy in compat.h/compat.bpf.h
The comments around SCX_OPS_DEFINE() and SCX_OPS_OPEN() were vague about
how backward compatibility actually works. Expand them to describe the two
mechanisms: load-time BTF fix-up for additive changes, and multi-variant
struct_ops for incompatible ones.

Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Andrea Righi <arighi@nvidia.com>
Acked-by: Cheng-Yang Chou <yphbchou0911@gmail.com>
2026-04-19 07:47:47 -10:00
Linus Torvalds
bea8d77e45 Staging driver changes for 7.1-rc1
Here is the "big" set of staging driver changes for 7.1-rc1.
 
 Nothing major in here at all, just lots of little cleanups for the
 staging drivers, driven by new developers getting their feet wet in
 kernel development.  "Largest" thing in here is the change of some of
 the octeon variable types into proper kernel ones.
 
 Full details are in the shortlog.
 
 All of these have been in linux-next for a while with no reported
 issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 -----BEGIN PGP SIGNATURE-----
 
 iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCaeSwQw8cZ3JlZ0Brcm9h
 aC5jb20ACgkQMUfUDdst+yn5CACeOUA5iM3jzCYLcTzNZCWxtJNndmEAoLmP6DeO
 1gDkw56spKf7LIpi75vJ
 =8gS1
 -----END PGP SIGNATURE-----

Merge tag 'staging-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging

Pull staging driver updates from Greg KH:
 "Here is the "big" set of staging driver changes for 7.1-rc1.

  Nothing major in here at all, just lots of little cleanups for the
  staging drivers, driven by new developers getting their feet wet in
  kernel development. "Largest" thing in here is the change of some of
  the octeon variable types into proper kernel ones.

  Full details are in the shortlog.

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'staging-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (154 commits)
  staging: rtl8723bs: remove redundant & parentheses
  staging: most: dim2: replace BUG_ON() in poison_channel()
  staging: most: dim2: replace BUG_ON() in enqueue()
  staging: most: dim2: replace BUG_ON() in configure_channel()
  staging: most: dim2: replace BUG_ON() in service_done_flag()
  staging: most: dim2: replace BUG_ON() in try_start_dim_transfer()
  staging: rtl8723bs: remove unused RTL8188E antenna selection macros
  staging: rtl8723bs: remove redundant blank lines in basic_types.h
  staging: rtl8723bs: wrap complex macros with parentheses
  staging: rtl8723bs: remove unused WRITEEF/READEF byte macros
  staging: rtl8723bs: rename camelCase variable
  staging: greybus: audio: fix error message for BTN_3 button
  staging: rtl8723bs: rename variables to snake_case
  staging: rtl8723bs: fix spelling in comment
  staging: rtl8723bs: cleanup return in sdio_init()
  staging: rtl8723bs: use direct returns in sdio_dvobj_init()
  staging: rtl8723bs: remove unused arg at odm_interface.h
  greybus: raw: fix use-after-free if write is called after disconnect
  greybus: raw: fix use-after-free on cdev close
  staging: rtl8723bs: fix logical continuations in xmit_linux.c
  ...
2026-04-19 08:51:32 -07:00
Linus Torvalds
99ef60d119 USB / Thunderbolt changes for 7.1-rc1
Here is the big set of USB and Thunderbolt changes for 7.1-rc1.
 
 Lots of little things in here, nothing major, just constant
 improvements, updates, and new features.  Highlights are:
   - new USB power supply driver support (will cause merge conflicts in
     drivers/power/supply/Makefile, but it's a simple fix)  These changes
     did touch outside of drivers/usb/ but got acks from the relevant
     mantainers for them.
   - dts file updates and conversions
   - string function conversions into "safer" ones
   - new device quirks
   - xhci driver updates
   - usb gadget driver minor fixes
   - typec driver additions and updates
   - small number of thunderbolt driver changes
   - dwc3 driver updates and additions of new hardware support
   - other minor driver updates
 
 All of these have been in the linux-next tree for a while with no
 reported issues
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 -----BEGIN PGP SIGNATURE-----
 
 iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCaeSx6g8cZ3JlZ0Brcm9h
 aC5jb20ACgkQMUfUDdst+ynqjQCgqhbj0Pg2DiL+hZ4xEVlsKD8MJsMAn0vbdsR5
 UiYztWABA245P1hO9i+K
 =/fxh
 -----END PGP SIGNATURE-----

Merge tag 'usb-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB / Thunderbolt updates from Greg KH:
 "Here is the big set of USB and Thunderbolt changes for 7.1-rc1.

  Lots of little things in here, nothing major, just constant
  improvements, updates, and new features. Highlights are:

   - new USB power supply driver support.

     These changes did touch outside of drivers/usb/ but got acks from
     the relevant mantainers for them.

   - dts file updates and conversions

   - string function conversions into "safer" ones

   - new device quirks

   - xhci driver updates

   - usb gadget driver minor fixes

   - typec driver additions and updates

   - small number of thunderbolt driver changes

   - dwc3 driver updates and additions of new hardware support

   - other minor driver updates

  All of these have been in the linux-next tree for a while with no
  reported issues"

* tag 'usb-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (176 commits)
  usb: dwc3: starfive: Add JHB100 USB 2.0 DRD controller
  dt-bindings: usb: dwc3: add support for StarFive JHB100
  dt-bindings: usb: atmel,at91sam9rl-udc: convert to DT schema
  dt-bindings: usb: atmel,at91rm9200-udc: convert to DT schema
  dt-bindings: usb: generic-ehci: fix schema structure and add at91sam9g45 constraints
  dt-bindings: usb: generic-ohci: add AT91RM9200 OHCI binding support
  arm: dts: at91: remove unused #address-cells/#size-cells from sam9x60 udc node
  drivers/usb/host: Fix spelling error 'seperate' -> 'separate'
  usbip: tools: add hint when no exported devices are found
  USB: serial: iuu_phoenix: fix iuutool author name
  usb: gadget: f_ncm: validate minimum block_len in ncm_unwrap_ntb()
  usb: gadget: f_phonet: fix skb frags[] overflow in pn_rx_complete()
  usb: gadget: f_hid: Add missing error code
  usb: typec: cros_ec_ucsi: Load driver from OF and ACPI definitions
  dt-bindings: chrome: Add cros-ec-ucsi compatibility to typec binding
  USB: of: Simplify with scoped for each OF child loop
  usbip: validate number_of_packets in usbip_pack_ret_submit()
  usb: gadget: renesas_usb3: validate endpoint index in standard request handlers
  usb: core: config: reverse the size check of the SSP isoc endpoint descriptor
  usb: typec: ucsi: Set usb mode on partner change
  ...
2026-04-19 08:47:40 -07:00
Tejun Heo
87019cb6c2 sched_ext: Mark scx_sched_hash insecure_elasticity
scx_sched_hash is inserted into under scx_sched_lock (raw_spinlock_irq)
in scx_link_sched(). rhashtable's sync grow path calls get_random_u32()
and does a GFP_ATOMIC allocation; both acquire regular spinlocks, which
is unsafe under raw_spinlock_t. Set insecure_elasticity to skip the
sync grow.

v2:
- Dropped dsq_hash changes. Insertion is not under raw_spin_lock.

- Switched from no_sync_grow flag to insecure_elasticity.

Fixes: 25037af712 ("sched_ext: Add rhashtable lookup for sub-schedulers")
Signed-off-by: Tejun Heo <tj@kernel.org>
2026-04-19 05:47:28 -10:00
Herbert Xu
73bd122778 rhashtable: Restore insecure_elasticity toggle
Some users of rhashtable cannot handle insertion failures, and
are happy to accept the consequences of a hash table that having
very long chains.

Restore the insecure_elasticity toggle for these users.  In
addition to disabling the chain length checks, this also removes
the emergency resize that would otherwise occur when the hash
table occupancy hits 100% (an async resize is still scheduled
at 75%).

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Tejun Heo <tj@kernel.org>
2026-04-19 05:47:21 -10:00
Linus Torvalds
73398c2772 TTY/Serial changes for 7.1-rc1
Here is the set of tty and serial driver changes for 7.1-rc1.
 
 Not much here this cycle, biggest thing is the removal of an old driver
 that never got any actual hardware support (esp32), and the second try
 to moving the tty ports to their own workqueues (first try was in
 7.0-rc1 but was reverted due to problems.)
 
 Otherwise it's just a small set of driver updates and some vt modifier
 key enhancements.
 
 All have been in linux-next for a while with no reported issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 -----BEGIN PGP SIGNATURE-----
 
 iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCaeTdzg8cZ3JlZ0Brcm9h
 aC5jb20ACgkQMUfUDdst+ymr3gCeKwRtlyy5LOFs/vikB47gf/aBb1MAoIv4JBDo
 xWvKMVFvMD7XfsJkPHyR
 =l37E
 -----END PGP SIGNATURE-----

Merge tag 'tty-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

Pull tty/serial updates from Greg KH:
 "Here is the set of tty and serial driver changes for 7.1-rc1.

  Not much here this cycle, biggest thing is the removal of an old
  driver that never got any actual hardware support (esp32), and the
  second try to moving the tty ports to their own workqueues (first try
  was in 7.0-rc1 but was reverted due to problems)

  Otherwise it's just a small set of driver updates and some vt modifier
  key enhancements.

  All have been in linux-next for a while with no reported issues"

* tag 'tty-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (35 commits)
  tty: serial: ip22zilog: Fix section mispatch warning
  hvc/xen: Check console connection flag
  serial: sh-sci: Add support for RZ/G3L RSCI
  dt-bindings: serial: renesas,rsci: Document RZ/G3L SoC
  tty: atmel_serial: update outdated reference to atmel_tasklet_func()
  serial: xilinx_uartps: Drop unused include
  serial: qcom-geni: drop stray newline format specifier
  serial: 8250: loongson: Enable building on MIPS Loongson64
  dt-bindings: serial: 8250: Add Loongson 3A4000 uart compatible
  serial: 8250_fintek: Add support for F81214E
  tty: tty_port: add workqueue to flip TTY buffer
  vt: support ITU-T T.416 color subparameters
  serial: qcom-geni: Fix RTS behavior with flow control
  tty: serial: imx: keep dma request disabled before dma transfer setup
  tty: serial: 8250: Add SystemBase Multi I/O cards
  serial: pic32_uart: allow driver to be compiled on all architectures with COMPILE_TEST
  serial: tegra: remove Kconfig dependency on APB DMA controller
  dt-bindings: serial: amlogic,meson-uart: Add compatible string for A9
  dt-bindings: serial: atmel,at91-usart: add microchip,lan9691-usart
  serial: auart: check clk_enable() return in console write
  ...
2026-04-19 08:44:41 -07:00
Linus Torvalds
40735a683b mm.git review status for linus..mm-stable
Everything:
 
 Total patches:       121
 Reviews/patch:       2.11
 Reviewed rate:       90%
 
 Excluding DAMON:
 
 Total patches:       113
 Reviews/patch:       2.25
 Reviewed rate:       96%
 
 - The 33 patch series "Eliminate Dying Memory Cgroup" from Qi Zheng and
   Muchun Song addresses the longstanding "dying memcg problem".  A
   situation wherein a no-longer-used memory control group will hang around
   for an extended period pointlessly consuming memory.  The [0/N]
   changelog has a good overview of this work.
 
 - The 3 patch series "fix unexpected type conversions and potential
   overflows" from Qi Zheng fixes a couple of potential 32-bit/64-bit
   issues which were identified during review of the "Eliminate Dying
   Memory Cgroup" series.
 
 - The 6 patch series "kho: history: track previous kernel version and
   kexec boot count" from Breno Leitao uses Kexec Handover (KHO) to pass
   the previous kernel's version string and the number of kexec reboots
   since the last cold boot to the next kernel, and prints it at boot time.
 
 - The 4 patch series "liveupdate: prevent double preservation" from
   Pasha Tatashin teaches LUO to avoid managing the same file across
   different active sessions.
 
 - The 10 patch series "liveupdate: Fix module unloading and unregister
   API" from Pasha Tatashin addresses an issue with how LUO handles module
   reference counting and unregistration during module unloading.
 
 - The 2 patch series "zswap pool per-CPU acomp_ctx simplifications" from
   Kanchana Sridhar simplifies and cleans up the zswap crypto compression
   handling and improves the lifecycle management of zswap pool's per-CPU
   acomp_ctx resources.
 
 - The 2 patch series "mm/damon/core: fix damon_call()/damos_walk() vs
   kdmond exit race" from SeongJae Park addresses unlikely but possible
   leaks and deadlocks in damon_call() and damon_walk().
 
 - The 2 patch series "mm/damon/core: validate damos_quota_goal->nid"
   from SeongJae Park fixes a couple of root-only wild pointer
   dereferences.
 
 - The 2 patch series "Docs/admin-guide/mm/damon: warn commit_inputs vs
   other params race" from SeongJae Park updates the DAMON documentation to
   warn operators about potential races which can occur if the
   commit_inputs parameter is altered at the wrong time.
 
 - The 3 patch series "Minor hmm_test fixes and cleanups" from Alistair
   Popple implements two bugfixes a cleanup for the HMM kernel selftests.
 
 - The 6 patch series "Modify memfd_luo code" from Chenghao Duan provides
   cleanups, simplifications and speedups in the memfd_lou code.
 
 - The 4 patch series "mm, kvm: allow uffd support in guest_memfd" from
   Mike Rapoport enables support for userfaultfd in guest_memfd.
 
 - The 6 patch series "selftests/mm: skip several tests when thp is not
   available" from Chunyu Hu fixes several issues in the selftests code
   which were causing breakage when the tests were run on CONFIG_THP=n
   kernels.
 
 - The 2 patch series "mm/mprotect: micro-optimization work" from Pedro
   Falcato implements a couple of nice speedups for mprotect().
 
 - The 3 patch series "MAINTAINERS: update KHO and LIVE UPDATE entries"
   from Pratyush Yadav reflects upcoming changes in the maintenance of KHO,
   LUO, memfd_luo, kexec, crash, kdump and probably other kexec-based
   things - they are being moved out of mm.git and into a new git tree.
 -----BEGIN PGP SIGNATURE-----
 
 iHUEABYIAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCaeNL/wAKCRDdBJ7gKXxA
 jt7EAQCEEQvYYTjld+8HJKsCbavY4pEfci7z4SBiQyIPjRracQD/ZfjXnzL7ucc1
 b6q6G4TcslvIDBgzVkk9G2BVn2oCoAg=
 =3ozv
 -----END PGP SIGNATURE-----

Merge tag 'mm-stable-2026-04-18-02-14' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull more MM updates from Andrew Morton:

 - "Eliminate Dying Memory Cgroup" (Qi Zheng and Muchun Song)

   Address the longstanding "dying memcg problem". A situation wherein a
   no-longer-used memory control group will hang around for an extended
   period pointlessly consuming memory

 - "fix unexpected type conversions and potential overflows" (Qi Zheng)

   Fix a couple of potential 32-bit/64-bit issues which were identified
   during review of the "Eliminate Dying Memory Cgroup" series

 - "kho: history: track previous kernel version and kexec boot count"
   (Breno Leitao)

   Use Kexec Handover (KHO) to pass the previous kernel's version string
   and the number of kexec reboots since the last cold boot to the next
   kernel, and print it at boot time

 - "liveupdate: prevent double preservation" (Pasha Tatashin)

   Teach LUO to avoid managing the same file across different active
   sessions

 - "liveupdate: Fix module unloading and unregister API" (Pasha
   Tatashin)

   Address an issue with how LUO handles module reference counting and
   unregistration during module unloading

 - "zswap pool per-CPU acomp_ctx simplifications" (Kanchana Sridhar)

   Simplify and clean up the zswap crypto compression handling and
   improve the lifecycle management of zswap pool's per-CPU acomp_ctx
   resources

 - "mm/damon/core: fix damon_call()/damos_walk() vs kdmond exit race"
   (SeongJae Park)

   Address unlikely but possible leaks and deadlocks in damon_call() and
   damon_walk()

 - "mm/damon/core: validate damos_quota_goal->nid" (SeongJae Park)

   Fix a couple of root-only wild pointer dereferences

 - "Docs/admin-guide/mm/damon: warn commit_inputs vs other params race"
   (SeongJae Park)

   Update the DAMON documentation to warn operators about potential
   races which can occur if the commit_inputs parameter is altered at
   the wrong time

 - "Minor hmm_test fixes and cleanups" (Alistair Popple)

   Bugfixes and a cleanup for the HMM kernel selftests

 - "Modify memfd_luo code" (Chenghao Duan)

   Cleanups, simplifications and speedups to the memfd_lou code

 - "mm, kvm: allow uffd support in guest_memfd" (Mike Rapoport)

   Support for userfaultfd in guest_memfd

 - "selftests/mm: skip several tests when thp is not available" (Chunyu
   Hu)

   Fix several issues in the selftests code which were causing breakage
   when the tests were run on CONFIG_THP=n kernels

 - "mm/mprotect: micro-optimization work" (Pedro Falcato)

   A couple of nice speedups for mprotect()

 - "MAINTAINERS: update KHO and LIVE UPDATE entries" (Pratyush Yadav)

   Document upcoming changes in the maintenance of KHO, LUO, memfd_luo,
   kexec, crash, kdump and probably other kexec-based things - they are
   being moved out of mm.git and into a new git tree

* tag 'mm-stable-2026-04-18-02-14' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (121 commits)
  MAINTAINERS: add page cache reviewer
  mm/vmscan: avoid false-positive -Wuninitialized warning
  MAINTAINERS: update Dave's kdump reviewer email address
  MAINTAINERS: drop include/linux/liveupdate from LIVE UPDATE
  MAINTAINERS: drop include/linux/kho/abi/ from KHO
  MAINTAINERS: update KHO and LIVE UPDATE maintainers
  MAINTAINERS: update kexec/kdump maintainers entries
  mm/migrate_device: remove dead migration entry check in migrate_vma_collect_huge_pmd()
  selftests: mm: skip charge_reserved_hugetlb without killall
  userfaultfd: allow registration of ranges below mmap_min_addr
  mm/vmstat: fix vmstat_shepherd double-scheduling vmstat_update
  mm/hugetlb: fix early boot crash on parameters without '=' separator
  zram: reject unrecognized type= values in recompress_store()
  docs: proc: document ProtectionKey in smaps
  mm/mprotect: special-case small folios when applying permissions
  mm/mprotect: move softleaf code out of the main function
  mm: remove '!root_reclaim' checking in should_abort_scan()
  mm/sparse: fix comment for section map alignment
  mm/page_io: use sio->len for PSWPIN accounting in sio_read_complete()
  selftests/mm: transhuge_stress: skip the test when thp not available
  ...
2026-04-19 08:01:17 -07:00
Steve French
90ea1d02f4 cifs: update internal module version number
to 2.60

Signed-off-by: Steve French <stfrench@microsoft.com>
2026-04-19 09:46:50 -05:00
Enzo Matsumiya
a13e942a03 smb: client: compress: fix bad encoding on last LZ77 flag
End-of-stream flag could lead to UB because of int promotion
(overwriting signed bit).

Fix it by changing operand from '1' to '1UL'.

Signed-off-by: Enzo Matsumiya <ematsumiya@suse.de>
Signed-off-by: Steve French <stfrench@microsoft.com>
2026-04-19 09:46:46 -05:00
Amery Hung
31f61ac330
bpf: Refactor dynptr mutability tracking
Redefine dynptr mutability and fix inconsistency in the verifier and
kfunc signatures. Dynptr mutability is at two levels. The first is
the bpf_dynptr structure and the second is the memory the dynptr points
to. The verifer currently tracks the mutability of the bpf_dynptr struct
through helper and kfunc prototypes, where "const struct bpf_dynptr *"
means the structure itself is immutable. The second level is tracked
in upper bit of bpf_dynptr->size in runtime and is not changed in this
patch.

There are two type of inconsistency in the verfier regarding the
mutability of the bpf_dynptr struct. First, there are many existing
kfuncs whose prototypes are wrong. For example, bpf_dynptr_adjust()
mutates a dynptr's start and offset but marks the argument as a const
pointer. At the same time many other kfuncs that does not mutate the
dynptr but mark themselves as mutable. Second, the verifier currently
does not honor the const qualifier in kfunc prototypes as it determines
whether tagging the arg_type with MEM_RDONLY or not based on the register
state.

Since all the verifier care is to prevent CONST_PTR_TO_DYNPTR from
being destroyed in callback and global subprogram, redefine the
mutability at the bpf_dynptr level to just bpf_dynptr_kern->data. Then,
explicitly prohibit passing CONST_PTR_TO_DYNPTR to an argument tagged
with MEM_UNINIT or OBJ_RELEASE. The mutability of a dynptr's view is not
really interesting so drop MEM_RDONLY annotation for dynptr from the
helpers and kfuncs. Plus, if the mutability of the entire bpf_dynptr
were to be done correctly, it would kill the bpf_dynptr_adjust() usage
in callback and global subporgram.

Implementation wise

- First, make sure all kfunc arg are correctly tagged: Tag the dynptr
  argument of bpf_dynptr_file_discard() with OBJ_RELEASE.
- Then, in process_dynptr_func(), make sure CONST_PTR_TO_DYNPTR cannot
  be passed to argument tagged with MEM_UNINIT or OBJ_RELEASE. For
  MEM_UNINIT, it is already checked by is_dynptr_reg_valid_uninit().
  For OBJ_RELEASE, check against OBJ_RELEASE instead of MEM_RDONLY and
  drop a now identical check in unmark_stack_slots_dynptr().
- Remove the mutual exclusive check between MEM_UNINIT and MEM_RDONLY,
  but don't add a MEM_UNINIT and OBJ_RELEASE version as it is obviously
  wrong.

Note that while this patch stops following the C semantic for the
mutability of bpf_dynptr, the prototype of kfuncs are still fixed to
maintain the correct C semantics in the implementation. Adding or
removing the const qualifier does not break backward compatibility.
In addition, fix kfuncs dropping the const qualifier when casting the
opaque bpf_dynptr to bpf_dynptr_kern.

In test_kfunc_dynptr_param.c, initialize dynptr to 0 to avoid
-Wuninitialized-const-pointer warning.

Signed-off-by: Amery Hung <ameryhung@gmail.com>
Acked-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/bpf/20260414191014.1218567-1-ameryhung@gmail.com
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
2026-04-19 15:16:44 +02:00
Amery Hung
7c528b364b
selftests/bpf: Trace bpf_local_storage_update to debug flaky local storage tests
task_local_storage/sys_enter_exit and cgrp_local_storage/
cgroup_iter_sleepable occasionally fail in CI possibly because
bpf_{task,cgrp}_storage_get() returns NULL. Add a fexit probe on
bpf_local_storage_update() to capture the actual error code when this
happens. It will allow us to tell if it is trylock failure in
kmalloc_nolock(), timeout/deadlock in rqspinlock or something else.

Signed-off-by: Amery Hung <ameryhung@gmail.com>
Acked-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/bpf/20260417233631.1443199-1-ameryhung@gmail.com
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
2026-04-19 13:52:50 +02:00
Aaron Tomlin
ad35d80186
libbpf: Report error when a negative kprobe offset is specified
In attach_kprobe(), the parsing logic uses sscanf() to extract the
target function name and offset from the section definition. Currently,
if a user specifies a negative offset (e.g., SEC("kprobe/func+-100")),
the input is not explicitly caught and reported as an error.

This commit updates the logic to explicitly notify the user when a
negative integer is provided. To facilitate this check, the offset
variable is changed from unsigned long to long so that sscanf()
can accurately capture a negative input for evaluation.

If a negative offset is detected, the loader will now print an
informative warning stating that the offset must be non-negative,
and return -EINVAL.

Additionally, free(func) is called in this new error path to prevent
a memory leak, as the function name string is dynamically allocated
by sscanf().

Fixes: e3f9bc35ea ("libbpf: Allow decimal offset for kprobes")
Signed-off-by: Aaron Tomlin <atomlin@atomlin.com>
Acked-by: Mykyta Yatsenko <yatsenko@meta.com>
Link: https://lore.kernel.org/bpf/20260419030944.1423642-1-atomlin@atomlin.com
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
2026-04-19 13:52:34 +02:00
SeongJae Park
95093e5cb4 mm/damon/core: disallow non-power of two min_region_sz on damon_start()
Commit d8f867fa08 ("mm/damon: add damon_ctx->min_sz_region") introduced
a bug that allows unaligned DAMON region address ranges.  Commit
c80f46ac22 ("mm/damon/core: disallow non-power of two min_region_sz")
fixed it, but only for damon_commit_ctx() use case.  Still, DAMON sysfs
interface can emit non-power of two min_region_sz via damon_start().  Fix
the path by adding the is_power_of_2() check on damon_start().

The issue was discovered by sashiko [1].

Link: https://lore.kernel.org/20260411213638.77768-1-sj@kernel.org
Link: https://lore.kernel.org/20260403155530.64647-1-sj@kernel.org [1]
Fixes: d8f867fa08 ("mm/damon: add damon_ctx->min_sz_region")
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: <stable@vger.kernel.org> # 6.18.x
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2026-04-18 23:24:27 -07:00
Uladzislau Rezki (Sony)
ec05f51f1e mm/vmalloc: take vmap_purge_lock in shrinker
decay_va_pool_node() can be invoked concurrently from two paths:
__purge_vmap_area_lazy() when pools are being purged, and the shrinker via
vmap_node_shrink_scan().

However, decay_va_pool_node() is not safe to run concurrently, and the
shrinker path currently lacks serialization, leading to races and possible
leaks.

Protect decay_va_pool_node() by taking vmap_purge_lock in the shrinker
path to ensure serialization with purge users.

Link: https://lore.kernel.org/20260413192646.14683-1-urezki@gmail.com
Fixes: 7679ba6b36 ("mm: vmalloc: add a shrinker to drain vmap pools")
Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
Reviewed-by: Baoquan He <baoquan.he@linux.dev>
Cc: chenyichong <chenyichong@uniontech.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2026-04-18 23:24:27 -07:00
Matthew Wilcox (Oracle)
615d9bb2cc mm: call ->free_folio() directly in folio_unmap_invalidate()
We can only call filemap_free_folio() if we have a reference to (or hold a
lock on) the mapping.  Otherwise, we've already removed the folio from the
mapping so it no longer pins the mapping and the mapping can be removed,
causing a use-after-free when accessing mapping->a_ops.

Follow the same pattern as __remove_mapping() and load the free_folio
function pointer before dropping the lock on the mapping.  That lets us
make filemap_free_folio() static as this was the only caller outside
filemap.c.

Link: https://lore.kernel.org/20260413184314.3419945-1-willy@infradead.org
Fixes: fb7d3bc414 ("mm/filemap: drop streaming/uncached pages when writeback completes")
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reported-by: Google Big Sleep <big-sleep-vuln-reports+bigsleep-501448199@google.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Jan Kara <jack@suse.cz>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2026-04-18 23:24:27 -07:00
Breno Leitao
8f5857be99 mm: blk-cgroup: fix use-after-free in cgwb_release_workfn()
cgwb_release_workfn() calls css_put(wb->blkcg_css) and then later accesses
wb->blkcg_css again via blkcg_unpin_online().  If css_put() drops the last
reference, the blkcg can be freed asynchronously (css_free_rwork_fn ->
blkcg_css_free -> kfree) before blkcg_unpin_online() dereferences the
pointer to access blkcg->online_pin, resulting in a use-after-free:

  BUG: KASAN: slab-use-after-free in blkcg_unpin_online (./include/linux/instrumented.h:112 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 block/blk-cgroup.c:1367)
  Write of size 4 at addr ff11000117aa6160 by task kworker/71:1/531
   Workqueue: cgwb_release cgwb_release_workfn
   Call Trace:
    <TASK>
     blkcg_unpin_online (./include/linux/instrumented.h:112 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 block/blk-cgroup.c:1367)
     cgwb_release_workfn (mm/backing-dev.c:629)
     process_scheduled_works (kernel/workqueue.c:3278 kernel/workqueue.c:3385)

   Freed by task 1016:
    kfree (./include/linux/kasan.h:235 mm/slub.c:2689 mm/slub.c:6246 mm/slub.c:6561)
    css_free_rwork_fn (kernel/cgroup/cgroup.c:5542)
    process_scheduled_works (kernel/workqueue.c:3302 kernel/workqueue.c:3385)

** Stack based on commit 66672af7a095 ("Add linux-next specific files
for 20260410")

I am seeing this crash sporadically in Meta fleet across multiple kernel
versions.  A full reproducer is available at:
https://github.com/leitao/debug/blob/main/reproducers/repro_blkcg_uaf.sh

(The race window is narrow.  To make it easily reproducible, inject a
msleep(100) between css_put() and blkcg_unpin_online() in
cgwb_release_workfn().  With that delay and a KASAN-enabled kernel, the
reproducer triggers the splat reliably in less than a second.)

Fix this by moving blkcg_unpin_online() before css_put(), so the
cgwb's CSS reference keeps the blkcg alive while blkcg_unpin_online()
accesses it.

Link: https://lore.kernel.org/20260413-blkcg-v1-1-35b72622d16c@debian.org
Fixes: 59b57717ff ("blkcg: delay blkg destruction until after writeback has finished")
Signed-off-by: Breno Leitao <leitao@debian.org>
Reviewed-by: Dennis Zhou <dennis@kernel.org>
Reviewed-by: Shakeel Butt <shakeel.butt@linux.dev>
Cc: David Hildenbrand <david@kernel.org>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Josef Bacik <josef@toxicpanda.com>
Cc: JP Kobryn <inwardvessel@gmail.com>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes (Oracle) <ljs@kernel.org>
Cc: Martin KaFai Lau <martin.lau@linux.dev>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2026-04-18 23:24:27 -07:00
Matthew Brost
3992898495 mm/zone_device: do not touch device folio after calling ->folio_free()
The contents of a device folio can immediately change after calling
->folio_free(), as the folio may be reallocated by a driver with a
different order.  Instead of touching the folio again to extract the
pgmap, use the local stack variable when calling percpu_ref_put_many().

Link: https://lore.kernel.org/20260410230346.4009855-1-matthew.brost@intel.com
Fixes: d245f9b4ab ("mm/zone_device: support large zone device private folios")
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Balbir Singh <balbirs@nvidia.com>
Reviewed-by: Vishal Moola <vishal.moola@gmail.com>
Reviewed-by: Alistair Popple <apopple@nvidia.com>
Cc: David Hildenbrand <david@kernel.org>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2026-04-18 23:24:27 -07:00
SeongJae Park
8bbde987c2 mm/damon/core: disallow time-quota setting zero esz
When the throughput of a DAMOS scheme is very slow, DAMOS time quota can
make the effective size quota smaller than damon_ctx->min_region_sz.  In
the case, damos_apply_scheme() will skip applying the action, because the
action is tried at region level, which requires >=min_region_sz size. 
That is, the quota is effectively exceeded for the quota charge window.

Because no action will be applied, the total_charged_sz and
total_charged_ns are also not updated.  damos_set_effective_quota() will
try to update the effective size quota before starting the next charge
window.  However, because the total_charged_sz and total_charged_ns have
not updated, the throughput and effective size quota are also not changed.
Since effective size quota can only be decreased, other effective size
quota update factors including DAMOS quota goals and size quota cannot
make any change, either.

As a result, the scheme is unexpectedly deactivated until the user notices
and mitigates the situation.  The users can mitigate this situation by
changing the time quota online or re-install the scheme.  While the
mitigation is somewhat straightforward, finding the situation would be
challenging, because DAMON is not providing good observabilities for that.
Even if such observability is provided, doing the additional monitoring
and the mitigation is somewhat cumbersome and not aligned to the intention
of the time quota.  The time quota was intended to help reduce the user's
administration overhead.

Fix the problem by setting time quota-modified effective size quota be at
least min_region_sz always.

The issue was discovered [1] by sashiko.

Link: https://lore.kernel.org/20260407003153.79589-1-sj@kernel.org
Link: https://lore.kernel.org/20260405192504.110014-1-sj@kernel.org [1]
Fixes: 1cd2430300 ("mm/damon/schemes: implement time quota")
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: <stable@vger.kernel.org> # 5.16.x
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2026-04-18 23:24:27 -07:00
Joshua Hahn
8fedac321f mm/mempolicy: fix weighted interleave auto sysfs name
The __ATTR macro is a utility that makes defining kobj_attributes easier
by stringfying the name, verifying the mode, and setting the show/store
fields in a single initializer.  It takes a raw token as the first value,
rather than a string, so that __ATTR family macros like __ATTR_RW can
token-paste it for inferring the _show / _store function names.

Commit e341f9c3c8 ("mm/mempolicy: Weighted Interleave Auto-tuning") used
the __ATTR macro to define the "auto" sysfs for weighted interleave.  A
few months later, commit 2fb6915fa2 ("compiler_types.h: add "auto" as a
macro for "__auto_type"") introduced a #define macro which expanded auto
into __auto_type.

This led to the "auto" token passed into __ATTR to be expanded out into
__auto_type, and the sysfs entry to be displayed as __auto_type as well.

Expand out the __ATTR macro and directly pass a string "auto" instead of
the raw token 'auto' to prevent it from being expanded out.  Also bypass
the VERIFY_OCTAL_PERMISSIONS check by triple checking that 0664 is indeed
the intended permissions for this sysfs file.

Before:
$ ls /sys/kernel/mm/mempolicy/weighted_interleave
__auto_type  node0

After:
$ ls /sys/kernel/mm/mempolicy/weighted_interleave/
auto  node0

Link: https://lore.kernel.org/20260407141415.3080960-1-joshua.hahnjy@gmail.com
Fixes: 2fb6915fa2 ("compiler_types.h: add "auto" as a macro for "__auto_type"")
Signed-off-by: Joshua Hahn <joshua.hahnjy@gmail.com>
Reviewed-by: Gregory Price <gourry@gourry.net>
Reviewed-by: Rakie Kim <rakie.kim@sk.com>
Acked-by: David Hildenbrand (Arm) <david@kernel.org>
Acked-by: Zi Yan <ziy@nvidia.com>
Cc: Alistair Popple <apopple@nvidia.com>
Cc: Byungchul Park <byungchul@sk.com>
Cc: "Huang, Ying" <ying.huang@linux.alibaba.com>
Cc: Matthew Brost <matthew.brost@intel.com>
Cc: Rakie Kim <rakie.kim@sk.com>
Cc: Ying Huang <ying.huang@linux.alibaba.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2026-04-18 23:24:26 -07:00
Eric Biggers
e9af4f47d4 lib/crypto: docs: Add rst documentation to Documentation/crypto/
Add a documentation file Documentation/crypto/libcrypto.rst which
provides a high-level overview of lib/crypto/.

Also add several sub-pages which include the kernel-doc for the
algorithms that have it.  This makes the existing, quite extensive
kernel-doc start being included in the HTML and PDF documentation.

Note that the intent is very much *not* that everyone has to read these
Documentation/ files.  The library is intended to be straightforward and
use familiar conventions; generally it should be possible to dive right
into the kernel-doc.  You shouldn't need to read a lot of documentation
to just call `sha256()`, for example, or to run the unit tests if you're
already familiar with KUnit.  (This differs from the traditional crypto
API which has a larger barrier to entry.)

Nevertheless, this seems worth adding.  Hopefully it is useful and makes
LWN no longer consider the library to be "meticulously undocumented".

Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Link: https://lore.kernel.org/r/20260418192138.15556-3-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
2026-04-18 17:32:02 -07:00
Eric Biggers
6fa6b5cb60 docs: kdoc: Expand 'at_least' when creating parameter list
sphinx doesn't know that the kernel headers do:

    #define at_least static

Do this replacement before declarations are passed to it.

This prevents errors like the following from appearing once the
lib/crypto/ kernel-doc is wired up to the sphinx build:

   linux/Documentation/crypto/libcrypto:128: ./include/crypto/sha2.h:773: WARNING: Error in declarator or parameters
Error in declarator or parameters
Invalid C declaration: Expected ']' in end of array operator. [error at 59]
  void sha512_final (struct sha512_ctx *ctx, u8 out[at_least SHA512_DIGEST_SIZE])

Acked-by: Jonathan Corbet <corbet@lwn.net>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Link: https://lore.kernel.org/r/20260418192138.15556-2-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
2026-04-18 17:32:01 -07:00
Linus Torvalds
faeab16616 Pin control changes for the v7.1 kernel cycle:
Core changes:
 
 - Perform basic checks on pin config properties so as not to
   allow directly contradictory settings such as setting a pin
   to more than one bias or drive mode.
 
 - Handle input-threshold-voltage-microvolt property.
 
 - Introduce pinctrl_gpio_get_config() handling in the core for
   SCMI GPIO using pin control.
 
 New drivers:
 
 - GPIO-by-pin control driver (also apperaing in the GPIO pull
   request) fulfilling a promise on a comment from
   Grant Likely many years ago: "can't GPIO just be a front-end
   for pin control?" it turns out it can, if and only if you
   design something new from scratch, such as SCMI.
 
 - Broadcom BCM7038 as a pinctrl-single delegate.
 
 - Mobileye EyeQ6Lplus OLB pin controller.
 
 - Qualcomm Eliza and Hawi families TLMM pin controllers.
 
 - Qualcomm SDM670 and Milos family LPASS LPI pin controllers.
 
 - Qualcomm IPQ5210 pin controller.
 
 - Realtek RTD1625 pin controller support.
 
 - Rockchip RV1103B pin controller support.
 
 - Texas Instruments AM62L as a pinctrl-single delegate.
 
 Improvements:
 
 - Set config implementation for the Spacemit K1 pin controller.
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEElDRnuGcz/wPCXQWMQRCzN7AZXXMFAmnkAuIACgkQQRCzN7AZ
 XXMK2xAAwiHAlVzZ0BqOCEBzC0vtp3pratUKC5la8lF/ndWQrSOfdaY+UtS6vnRE
 ZqkFsEg4lu4beRota0orLYVeo+JcPdqI1iGu/BgsEr3U2wCC6SlP26Ixo2Xp72cO
 r0axhvMH0h/cqbsn9eYhRzUWQtzDEWMRZOI6uPSOvM9YoE7OYLNbb1bMEy9nGk6I
 CtNut9+3pR8f1qvdFnHdAPIO0e8I7+qjZXYnFVGSHBwoXXGTfFMsOpBO8lyfN7Mu
 NJtfDQvuI/Vnj+6ZVi7XaOzqLNRTvLdo5UPtcZC6gVDe7nYcVjIPFqzHDRvGwaNa
 5pqlIMCw+f3h64wl2E9H2cEx3wZfWeQP3HKrq5+NbNbHH1UIm2xsdykR2S5G3khc
 WPq28ob3naFC4AmIrcpZ5nNqX9hHfqQp891NySmL86uozfHy6p6Cu9K5ksq0Oo1v
 LRb7WqJ4pEko61vVvs4kCJF5W/LyNjTcBvZFQTQiDwZn2Ixz0vIheKpUlFIhldmC
 MpxyQ/Ct9YTSU3AZ7lZETVj/VASHnjpvE5JhDm2F89mI9yNYIBO70L1XDfUm3vPh
 /cFyrPCRJPPLyClc6UQRUEtmoMhbgM74f4rfV+JtA9J49o14I+ewVa7DtWtIZ6Pl
 X5DCS9Hl5o4mocaiOoXbCCTIn1cl1EWXSn/f6AVV5tI2hHOnbJc=
 =mkXM
 -----END PGP SIGNATURE-----

Merge tag 'pinctrl-v7.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl

Pull pin control updates from Linus Walleij:
 "Core changes:

   - Perform basic checks on pin config properties so as not to allow
     directly contradictory settings such as setting a pin to more than
     one bias or drive mode

   - Handle input-threshold-voltage-microvolt property

   - Introduce pinctrl_gpio_get_config() handling in the core for SCMI
     GPIO using pin control

  New drivers:

   - GPIO-by-pin control driver (also appearing in the GPIO pull
     request) fulfilling a promise on a comment from Grant Likely many
     years ago: "can't GPIO just be a front-end for pin control?" it
     turns out it can, if and only if you design something new from
     scratch, such as SCMI

   - Broadcom BCM7038 as a pinctrl-single delegate

   - Mobileye EyeQ6Lplus OLB pin controller

   - Qualcomm Eliza and Hawi families TLMM pin controllers

   - Qualcomm SDM670 and Milos family LPASS LPI pin controllers

   - Qualcomm IPQ5210 pin controller

   - Realtek RTD1625 pin controller support

   - Rockchip RV1103B pin controller support

   - Texas Instruments AM62L as a pinctrl-single delegate

  Improvements:

   - Set config implementation for the Spacemit K1 pin controller"

* tag 'pinctrl-v7.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (84 commits)
  pinctrl: qcom: Add Hawi pinctrl driver
  dt-bindings: pinctrl: qcom: Describe Hawi TLMM block
  dt-bindings: pinctrl: pinctrl-max77620: convert to DT schema
  pinctrl: single: Add bcm7038-padconf compatible matching
  dt-bindings: pinctrl: pinctrl-single: Add brcm,bcm7038-padconf
  dt-bindings: pinctrl: apple,pinctrl: Add t8122 compatible
  pinctrl: qcom: sdm670-lpass-lpi: label variables as static
  pinctrl: sophgo: pinctrl-sg2044: Fix wrong module description
  pinctrl: sophgo: pinctrl-sg2042: Fix wrong module description
  pinctrl: qcom: add sdm670 lpi tlmm
  dt-bindings: pinctrl: qcom: Add SDM670 LPASS LPI pinctrl
  dt-bindings: qcom: lpass-lpi-common: add reserved GPIOs property
  pinctrl: qcom: Introduce IPQ5210 TLMM driver
  dt-bindings: pinctrl: qcom: add IPQ5210 pinctrl
  pinctrl: qcom: Drop redundant intr_target_reg on modern SoCs
  pinctrl: qcom: eliza: Fix interrupt target bit
  pinctrl: core: Don't use "proxy" headers
  pinctrl: amd: Support new ACPI ID AMDI0033
  pinctrl: renesas: rzg2l: Drop superfluous blank line
  pinctrl: renesas: rzg2l: Fix save/restore of {IOLH,IEN,PUPD,SMT} registers
  ...
2026-04-18 16:59:09 -07:00
Linus Torvalds
401b0e0bc9 I3C for 7.1
Subsystem:
  - add sysfs option to rescan bus via entdaa
  - fix error code handling for send_ccc_cmd
 
 Drivers:
  - mipi-i3c-hci-pci: Intel Nova Lake-H I3C support
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEEBqsFVZXh8s/0O5JiY6TcMGxwOjIFAmnkAa8ACgkQY6TcMGxw
 OjKwAhAAs1dbW2vzIaz6Y4zfyyhbVeMAkfx1yj/ekegTRQW/1MiR7k4C8GF0aQQR
 p3gbchFDrXdGzmGKwT7Y8Gcol4ml3hw4/6yrlHojRAVcfoIdKgYfF2+ffqDjl0Md
 FKRBjP8IzJ1i9GKA1PyDzw8YvWKbcl14Tb0PgctVTLcsTfPF8NHIJ3i04hBEA2vW
 Ro0NbRwBeBypXTAkldB0ZOXaS9qyOqoxZskFe1kmGCG05Rlo92kMCMRjjX5H0TVv
 laWMLEv34MsoIArTi77KZtJGYhDBckdrETFIiJf5xWVTyVyIH1PILIIgsy+nBO4L
 0LsBnuhMyIA5AAUctIj63oZxLSIkTkNqk/Ii178dr/K6UfXtSt93q8Cgzdkh8Khy
 PLDVi8HBuLBmHqXmhtTatt8eerFuyJUUP3X3PnHXfJqTgHNfJN1yLYsLIX52S2h4
 c1GxuacDruX5stCvRn0DGiXozKruS45ce1EhbUOMUtImbWbau0DBoujqCZRQpSCW
 LEZo+DMQ+GCNb8hqHW6seV/c4N8ul/R84INUBswaDFIJArsy8KPPIcgG+7l8fGC+
 yHjbcxlR2gri7aaNjSjU36deNaOcSqcQoKJ97Ylhuba1HE2bCV4oV3ngI9k7hUbR
 aMxuN83r8ImiUvLKRh42IxjG6wAeVuYGVe6ohl3iK0uzgLL2Ux8=
 =7ohQ
 -----END PGP SIGNATURE-----

Merge tag 'i3c/for-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linux

Pull i3c updates from Alexandre Belloni:
 "Subsystem:
   - add sysfs option to rescan bus via entdaa
   - fix error code handling for send_ccc_cmd

  Drivers:
   - mipi-i3c-hci-pci: Intel Nova Lake-H I3C support"

* tag 'i3c/for-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linux: (22 commits)
  i3c: mipi-i3c-hci: fix IBI payload length calculation for final status
  i3c: master: adi: Fix error propagation for CCCs
  i3c: master: Fix error codes at send_ccc_cmd
  i3c: master: Move bus_init error suppression
  i3c: master: Move entdaa error suppression
  i3c: master: Move rstdaa error suppression
  i3c: dw: Simplify xfer cleanup with __free(kfree)
  i3c: dw: Fix memory leak in dw_i3c_master_i3c_xfers()
  i3c: master: renesas: Use __free(kfree) for xfer cleanup in renesas_i3c_send_ccc_cmd()
  i3c: master: renesas: Fix memory leak in renesas_i3c_i3c_xfers()
  i3c: master: dw-i3c: Balance PM runtime usage count on probe failure
  i3c: master: dw-i3c: Fix missing reset assertion in remove() callback
  i3c: mipi-i3c-hci-pci: Enable IBI while runtime suspended for Intel controllers
  i3c: mipi-i3c-hci-pci: Add optional ability to manage child runtime PM
  i3c: mipi-i3c-hci: Allow parent to manage runtime PM
  i3c: mipi-i3c-hci: Add quirk to allow IBI while runtime suspended
  i3c: mipi-i3c-hci-pci: Set d3hot_delay to 0 for Intel controllers
  i3c: fix missing newline in dev_err messages
  i3c: master: use kzalloc_flex
  i3c: mipi-i3c-hci-pci: Add support for Intel Nova Lake-H I3C
  ...
2026-04-18 16:48:13 -07:00