Commit graph

1,464,522 commits

Author SHA1 Message Date
Linus Torvalds
b4e07588e7 tracing: tell git to ignore the generated 'undefsyms_base.c' file
This odd file was added to automatically figure out tool-generated
symbols.

Honestly, it *should* have been just a real honest-to-goodness regular
file in git, instead of having strange code to generate it in the
Makefile, but that is not how that silly thing works.  So now we need to
ignore it explicitly.

Fixes: 1211907ac0 ("tracing: Generate undef symbols allowlist for simple_ring_buffer")
Cc: Vincent Donnefort <vdonnefort@google.com>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Steven Rostedt (Google) <rostedt@goodmis.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Marc Zyngier <maz@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2026-04-20 17:25:56 -07:00
Linus Torvalds
f154634e42 linux_kselftest-next-7.1-next-fixes
Fixes regressions in non-bash shells and busybox support, and reverts
 a commit that regression in build and installation when one or more
 tests fail to build. Fixes duplicated test number reporting introduced
 in ktap support patch.
 
 - selftests: Fix duplicated test number reporting
 - selftests: Fix runner.sh for non-bash shells
 - selftests: Fix runner.sh busybox support
 - selftests: Deescalate error reporting
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEEPZKym/RZuOCGeA/kCwJExA0NQxwFAmnmPx8ACgkQCwJExA0N
 QxwZ7g/+L4ZZDp3RyuauvCV4zhG5GQFudtvAkcLOSwBVnRbiLdPmdOXXz7IkW7DN
 U/WQx3pDOYmvtr2QdNvXch3HOdk1vUfNViU5yPNqC4jVZEMON2N7oGr2Eq+WVhi+
 gl63pRYk9ISh+5vOlzQY9UX1sLOxlME1foMJdHQEZHhgbNxlc7s/NfpqAnRC7a4l
 SFuzL/PJl9kYiMUFeYLB9kwrelvoLrzItMVz7/m56dgNVuEmbNDESBXGwJQneH6l
 SWOXPC96gu2cajluNfyhOqarkuGVD8x6J+2vWBwrDnSiyMLyealAOHnK5JGR17hW
 NErJDpqpdlIue5/h/XFnZ+4o43J8uEiUxmP7UiPAmreBllajeNz4xZPuz+i2vLH2
 O9dzzj/SV9War5txaFdqHXpbZE2zYOfhA07Xg6VdjcB0LTWaSOPqiIPr9UTwvT6o
 T7vYkvE+w4rjXwTFEscHkZ5jXrvAiWMrgiK4BuzXWy03/BvOF6LiMf0NCELvKvZG
 ZubLCJ1N/2EXgt+MX9dRmxq+7ZXCGu53TU5GeX1u/vT5lqsaPwoXT4RylZek5hwx
 DfKjEOU22TOQXAV01z1sPJvNwPZa84Hejzf6c6v2xobY/vaf4XxgyXAIAJJGOfpj
 25nEdecvjdX62kFfY/QrX7akpr7IreonpssmQVuGt3jilpq4uLg=
 =1k+f
 -----END PGP SIGNATURE-----

Merge tag 'linux_kselftest-next-7.1-next-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

Pull kselftest fixes from Shuah Khan:
 "Fix regressions in non-bash shells and busybox support, and revert a
  commit that regressed in build and installation when one or more tests
  fail to build.

  Fix duplicated test number reporting introduced in ktap support patch"

* tag 'linux_kselftest-next-7.1-next-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  selftests: Fix duplicated test number reporting
  selftests: Fix runner.sh for non-bash shells
  selftests: Fix runner.sh busybox support
  selftests: Deescalate error reporting
2026-04-20 17:19:30 -07:00
Linus Torvalds
13f24586a2 arm64 updates for 7.1 (second round):
Core features:
 
  - Add workaround for C1-Pro erratum 4193714 - early CME (SME unit)
    DVMSync acknowledgement. The fix consists of sending IPIs on TLB
    maintenance to those CPUs running in user space with SME enabled
 
  - Include kernel-hwcap.h in list of generated files (missed in a recent
    commit generating the KERNEL_HWCAP_* macros)
 
 CCA:
 
  - Fix RSI_INCOMPLETE error check in arm-cca-guest
 
 MPAM:
 
  - Fix an unmount->remount problem with the CDP emulation, uninitialised
    variable and checker warnings
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEE5RElWfyWxS+3PLO2a9axLQDIXvEFAmnmQZcACgkQa9axLQDI
 XvGouA//SXlo7hQyM41rkgRru9oqftrGg0y6nxz4Z089kv50cm3Jlf/nUuti6vah
 BMBLCGXA1iOQrGIVmuvtCxDRrfYZWpfKGuT9A0gmEoMqrGIpWl9gfBQG+uR+YrQX
 4kp5DLqB85WrJIPiy7HUV6GQoCbFuMrRJwxl89IdWZSobaei3SczTmnttwyJtxG5
 /BMitl024TYdiOPNo8bhiML1wIJCaTHvH4IrtCHPyUHEAtsHSMy00y0OrSKBtA/9
 ZHZRpY7Po/jnL7YUs1AfYwsaSXjkvqXN0K1Tdavzm75k6lpJmbM3VsZabG/CEuvK
 PCOGV++is4Y/A+7aQsCwXKeVnY3b6AC4sextytNq0g3GZ7I+Ht9O6nbsp5ZmyXzB
 HRiFxmFS1pSQOMX9f1neKi3vxDMTy1tKPeccTTzL8dNnxTvUBXnoWfPoJh3cpbjm
 Dbhe1kksiEn01WWFacGtkIPDa9c+Bkd2T+8wrsk85Z+u3Z0JPM5PfOn6v3X9YlKl
 K7W8fhvlDL1wP+iyWcMT5zdo+xzHY4ZxuyWbi9a4RhKc6lFHVVG2mpUuPwSsh2ma
 NnxkDouriuoADHBir89U71N483HSnNfSjhlVSFYD2LFCre5KOZM4KYZ2vwWb8Sy4
 79q+BlVRUTQ5O6XjePoSPjUW4APPNviHJsF4E4IiqHkd9O5lMZU=
 =LNY2
 -----END PGP SIGNATURE-----

Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull more arm64 updates from Catalin Marinas:
 "The main 'feature' is a workaround for C1-Pro erratum 4193714
  requiring IPIs during TLB maintenance if a process is running in user
  space with SME enabled.

  The hardware acknowledges the DVMSync messages before completing
  in-flight SME accesses, with security implications. The workaround
  makes use of the mm_cpumask() to track the cores that need
  interrupting (arm64 hasn't used this mask before).

  The rest are fixes for MPAM, CCA and generated header that turned up
  during the merging window or shortly before.

  Summary:

  Core features:

   - Add workaround for C1-Pro erratum 4193714 - early CME (SME unit)
     DVMSync acknowledgement. The fix consists of sending IPIs on TLB
     maintenance to those CPUs running in user space with SME enabled

   - Include kernel-hwcap.h in list of generated files (missed in a
     recent commit generating the KERNEL_HWCAP_* macros)

  CCA:

   - Fix RSI_INCOMPLETE error check in arm-cca-guest

  MPAM:

   - Fix an unmount->remount problem with the CDP emulation,
     uninitialised variable and checker warnings"

* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm_mpam: resctrl: Make resctrl_mon_ctx_waiters static
  arm_mpam: resctrl: Fix the check for no monitor components found
  arm_mpam: resctrl: Fix MBA CDP alloc_capable handling on unmount
  virt: arm-cca-guest: fix error check for RSI_INCOMPLETE
  arm64/hwcap: Include kernel-hwcap.h in list of generated files
  arm64: errata: Work around early CME DVMSync acknowledgement
  arm64: cputype: Add C1-Pro definitions
  arm64: tlb: Pass the corresponding mm to __tlbi_sync_s1ish()
  arm64: tlb: Introduce __tlbi_sync_s1ish_{kernel,batch}() for TLB maintenance
2026-04-20 16:46:22 -07:00
Linus Torvalds
ce9e93383a sh updates for v7.1
- sh: Drop CONFIG_FIRMWARE_EDID from defconfig files
 - sh: Remove CONFIG_VSYSCALL reference from UAPI
 - sh: Fix typo in SPDX license ID lines
 - sh: Include <linux/io.h> in dac.h
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCAAdFiEEYv+KdYTgKVaVRgAGdCY7N/W1+RMFAmnmHWgACgkQdCY7N/W1
 +RNVSQ/8DCMVL6n3HWJ0hllF5q5GDjk2CrpRRvcexw9B/ewOkgdykxnlFU90xSy3
 cHO+Y5ppeQuTLvnfYajCRUoR06OvBppAa3Ch1mWUYSDk/Ajs18gWnOYvvc+9isl9
 Pc25RjUa1E0pqayL+1XVdihk/moWM4A25bM8ND/Gqc4A6TyfRzESKvrz+jwrm5KL
 xDJBpD/tEKDqBnkiPE0Y/W3IjiZUG5ZpDuNIpkIW5JDWwlbT+4Xd7pcMQfor9JTM
 UCO4ZHDuhyf7vuMptFx/x6h2D1ssfDS7+5uGBRFIMpXJsXtbKSrePwF9dp/C8jia
 7XZVvmchtALZyUfyE/Z/UxaywtG8KLbPATMAlkb4veXJoqpKZXGNhtSE4M3P3h35
 CFfaGeSZEZjNYYT7TUjjZfv3EgTOeuC5I2wsJ+0ZaGMa/r/lIXwo7t6GwEApXXMN
 xGGG8/pS0Amyg2oWcf0xH0UGFeBt4AjO16NdC6z/5WRL42kqUn3V3KUGi2CWPx9L
 oHMnTQVTXvvhB7Lml58BVauLq3NHAPSuOvc2B/aelhv2sheET9PWVt/FeKacmC4N
 NyiNGFSlgonXUvMmh5YJwE1IwvQiziTF3BiHaCkuU4qS0lBpfxMsDGvmDusBlCjF
 MMTjlhDowpWYEbswHZmHhi4w2/ATTemrEoaY6m9jZNvZRwOK01k=
 =jFKW
 -----END PGP SIGNATURE-----

Merge tag 'sh-for-v7.1-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/glaubitz/sh-linux

Pull sh updates from John Paul Adrian Glaubitz:
 "Two patches from Thomas Zimmermann, one by Tim Bird and one by Thomas
  Weißschuh.

  The first patch by Thomas Zimmermann adds a missing include in dac.h
  for SH-3 which became necessary after 243ce64b2b ("backlight: Do not
  include <linux/fb.h> in header file") which made __raw_readb() and
  __raw_writeb() inaccessible in dac.h.

  Thomas' second patch drops CONFIG_FIRMWARE_EDID for SH as it depends
  on X86 or EFI_GENERIC_STUB which are not defined on SH for obvious
  reasons.

  The patch by Tim Bird fixes just a small typo in two SPDX ID lines
  which he stumbled over by accident.

  And, least but not last, the patch by Thomas Weißschuh removes the
  CONFIG_VSYSCALL reference from UAPI. This was necessary as the
  definition of AT_SYSINFO_EHDR was gated between CONFIG_VSYSCALL to
  avoid a default gate VMA to be created. However that default gate VMA
  was removed entirely in commit a6c19dfe39 (arm64,ia64,ppc,s390,
  sh,tile,um,x86,mm: remove default gate area)"

* tag 'sh-for-v7.1-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/glaubitz/sh-linux:
  sh: Drop CONFIG_FIRMWARE_EDID from defconfig files
  sh: Remove CONFIG_VSYSCALL reference from UAPI
  sh: Fix typo in SPDX license ID lines
  sh: Include <linux/io.h> in dac.h
2026-04-20 16:41:19 -07:00
Linus Torvalds
065c4e67cc Mostly cleanups and small things, notably:
- musl libc compatibility
  - vDSO installation fix
  - TLB sync race fix for recent SMP support
  - build fix for 32-bit with Clang 20/21
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEEpeA8sTs3M8SN2hR410qiO8sPaAAFAmnmKS4ACgkQ10qiO8sP
 aAD2+w//dOOblgUYgQJUXIxHpS7Gcb3Tm+a7ujC23q/kWf/pc8milCSf+zoxzUXL
 23Vwh4Gt4KrHKp8lG1gU3xZqV0qwhXNi5HO2hMpB0ioIVpX3TcrUhFbp/Oirvhgi
 3PvnvsFtUlW82DFgewB98tefXZSAlG/pg+RjQ3weHfEo+xQbjYc+kR8o59tN8LNR
 Ea4rrxyjsr3KN2yBNaFpDkMchudP6XWgKByAZBxZ2FofC3zuVRCyF8ThDfQl/3/W
 muSqX+2iuKjGpmxV0XWt72hYOhNYjBtDY7f4EPe6sbUy+PU6SjD9h/s7VTyVHgZR
 3Sii9AQLLJNYPoglExMfmWfeUnJCUJNNTLUze+ZtnhURZQYTvyJRzVmKj6fDPjK2
 jGEKXanfZCK9Cfgy2f2xbQxCxhAVwz6QT0XaQO2dZBXa0anzG+2HM0Zn8MNa9jbU
 +Lm11k1jd1QBifr+5zeni98KHt2mf77blCny8TraODgLNgWUVi5kMkPF4bZgD4Qj
 udMU9lOkTD08R89hG/Le9TsB+NIpPauyNxDHUpC/VDterFdZqFvmOFT6afTo/4RZ
 nXNVdL1tn+7O7v0bLdbyhXwj2her1GDbe6HZ5eTNqmjcOthcgI3gF2stDfFhEbNb
 /wMHnpGPncMeEI8YWtWOFA4FA5T32+LafLCKhuRJdaw0+f/NMOo=
 =oovZ
 -----END PGP SIGNATURE-----

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

Pull uml updates from Johannes Berg:
 "Mostly cleanups and small things, notably:

   - musl libc compatibility

   - vDSO installation fix

   - TLB sync race fix for recent SMP support

   - build fix for 32-bit with Clang 20/21"

* tag 'uml-for-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/uml/linux:
  um: Disable GCOV_PROFILE_ALL on 32-bit UML with Clang 20/21
  um: drivers: call kernel_strrchr() explicitly in cow_user.c
  um: Replace strncpy() with strnlen()+memcpy_and_pad() in strncpy_chunk_from_user()
  x86/um: fix vDSO installation
  um: Remove CONFIG_FRAME_WARN from x86_64_defconfig
  um: Fix pte_read() and pte_exec() for kernel mappings
  um: Fix potential race condition in TLB sync
  um: time-travel: clean up kernel-doc warnings
  um: avoid struct sigcontext redefinition with musl
  um: fix address-of CMSG_DATA() rvalue in stub
2026-04-20 16:36:46 -07:00
Linus Torvalds
b66cb4f156 printk changes for 7.1
-----BEGIN PGP SIGNATURE-----
 
 iQJPBAABCAA5FiEESH4wyp42V4tXvYsjUqAMR0iAlPIFAmnmEggbFIAAAAAABAAO
 bWFudTIsMi41KzEuMTIsMiwyAAoJEFKgDEdIgJTyjQwP/j2a9EzdI4+DfGrmA56m
 /heo44ObpFJppYaWEyAN7xX8Xpm7ErokLjZxVxhgQY7hGU5WLx1CmslnJbfWYkWy
 r7q92Kd/QIDmsvwHzlE0xdaX3rp8AXp3O2iIhcDfv9FRe+UultrESBpw9JbRYXXQ
 SLAFU1iOFMxyuzvhW/2l/B+PQDm0uoRMpMWTsLXo2JtNOsIGewNyV/7dhOumm+RD
 /0lgVA9jMAQA33j4Hkr38REe8lYH7aGl66x1mZhDg+kYb7w7ndKW/QN21OJiP+2D
 s4moi2/VLmC/UcxoDAOQTArKYkrYc2nzLMJRMaIun8jcNfCHEqaQAW2MTzSDAC78
 +atdlWrfIxykORA31lTtjh4o5vg43sQPjFZCJr3RxNLfxFy15NULhT75QFrxe9sA
 W3gs4Rz+LeynoQbJNCn8hgK0xcpKLtzC4dMY7dfQo6uyq2YnJauEvioJKbUYyoDh
 3l3uYfnzHcfRUb+yNtIkNCiYXwrpTAnSnifCbWO3smWYxhCdAT14Rval/fxtTjSe
 sTphd7m32U56WpWX0lYQbY001nMzso+gN/eQSK20IzrhvghwYUqvCKNm+fIM9tjR
 nQBxka+B7XhO27hNV4QIT8ZQRUkabQQAseEFhLQI2Ptgw3eV0s85gMP60Lg4gpZ0
 7OGA/VM+xrLqXvsFeDDWccSg
 =O6QR
 -----END PGP SIGNATURE-----

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

Pull printk updates from Petr Mladek:

 - Fix printk ring buffer initialization and sanity checks

 - Workaround printf kunit test compilation with gcc < 12.1

 - Add IPv6 address printf format tests

 - Misc code and documentation cleanup

* tag 'printk-for-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux:
  printf: Compile the kunit test with DISABLE_BRANCH_PROFILING DISABLE_BRANCH_PROFILING
  lib/vsprintf: use bool for local decode variable
  lib/hexdump: print_hex_dump_bytes() calls print_hex_dump_debug()
  printk: ringbuffer: fix errors in comments
  printk_ringbuffer: Add sanity check for 0-size data
  printk_ringbuffer: Fix get_data() size sanity check
  printf: add IPv6 address format tests
  printk: Fix _DESCS_COUNT type for 64-bit systems
2026-04-20 15:42:18 -07:00
Linus Torvalds
ccbc9fdb32 Fix timer stalls caused by incorrect handling of
the dev->next_event_forced flag.
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
 -----BEGIN PGP SIGNATURE-----
 
 iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAmnl1/4RHG1pbmdvQGtl
 cm5lbC5vcmcACgkQEnMQ0APhK1g/ww/7BI4CyQUJLSCpYMjvkj+87Rrfd5u6FGqt
 jz0dGeQpY0LvRGSqASwICe+1r0zwHF+xDsUfJvA13mRaPM6D6bEU+JE6ffK8B6T9
 EIyYwEwQ2a7DrdIu9+FCXTwqXDUoGLFsguD50b4qupQKFcDlwgZbg4UAWi/ptau9
 Ww+5T/+sfw/SMR9EwXBSKH79N0gOOGpDNfGtpDv+0X0qPQvo9QGAxMfIUgMf7ZaA
 y55agXi5iOdM+mAIrE69WLinBzrBvXHWNr66/SaMadQs93I1hU54sLpir4ft1yCs
 WnDtTRWG11Y0HBHUqqgbnN8BR/2VIFDVe9BtRDoDUD70iEJ8TGqJjOvF8v7C00MK
 ets0zNel9Rqbz9wjrjTekPYUHfC/t9qqzV77c0TdU1IR6FArf/OT9Ge34AVr60EX
 a5s4aX7ECLjwuTwgQPLXsSedOD0eQndf/VYdEQ86fTUfyyujVg2NCxbFEfDr3eho
 SbjcNv1UQ1WY/7miJzYaiA2aVNtwuX25YNI+t3f3pX/1tGqmx9oB1tNzJqgGfuN9
 3/Rx3uP0kH+gpbw1lKAugFJazOEHDLJG8LBgF0PYbmlVdIGn57IuBlQL5GDLe77O
 G+sFUhrLNpkrIJVhNWODkM+K/z9vvKzENiRgG4hB0oAbQEUuqTA6ppayKWWs8KDb
 9fdgLSkdjtI=
 =GPvm
 -----END PGP SIGNATURE-----

Merge tag 'timers-urgent-2026-04-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull timer fix from Ingo Molnar:
 "Fix timer stalls caused by incorrect handling of the
  dev->next_event_forced flag"

* tag 'timers-urgent-2026-04-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  clockevents: Add missing resets of the next_event_forced flag
2026-04-20 15:30:08 -07:00
Keenan Dong
3bfdc63936 rtmutex: Use waiter::task instead of current in remove_waiter()
remove_waiter() is used by the slowlock paths, but it is also used for
proxy-lock rollback in rt_mutex_start_proxy_lock() when invoked from
futex_requeue().

In the latter case waiter::task is not current, but remove_waiter()
operates on current for the dequeue operation. That results in several
problems:

  1) the rbtree dequeue happens without waiter::task::pi_lock being held

  2) the waiter task's pi_blocked_on state is not cleared, which leaves a
     dangling pointer primed for UAF around.

  3) rt_mutex_adjust_prio_chain() operates on the wrong top priority waiter
     task

Use waiter::task instead of current in all related operations in
remove_waiter() to cure those problems.

[ tglx: Fixup rt_mutex_adjust_prio_chain(), add a comment and amend the
  	changelog ]

Fixes: 8161239a8b ("rtmutex: Simplify PI algorithm and make highest prio task get lock")
Reported-by: Yuan Tan <yuantan098@gmail.com>
Reported-by: Yifan Wu <yifanwucs@gmail.com>
Reported-by: Juefei Pu <tomapufckgml@gmail.com>
Reported-by: Xin Liu <bird@lzu.edu.cn>
Signed-off-by: Keenan Dong <keenanat2000@gmail.com>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Cc: stable@vger.kernel.org
2026-04-21 00:22:31 +02:00
Linus Torvalds
65e9974ae2 Remove the unused ARCH_SYSCALL_WORK_{ENTER,EXIT} flags.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
 -----BEGIN PGP SIGNATURE-----
 
 iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAmnl1nYRHG1pbmdvQGtl
 cm5lbC5vcmcACgkQEnMQ0APhK1htAg/9EUdjaabxTyjgC5EzaGbOJ6dpK+sNnxLm
 hGljfVLxKX0ymPrPTC9dVl5+kIg6tETwtCwXOSR6TWy6ZlcZ/lB8gaddqfWaJQ2z
 FprjCgRGPcd2+UgiI/Z/fGp5vLePXe3x2KRmhHZEns9zxpZQ3L1gRhesNcbkrlXl
 rrKAWF3IndoKi0kC838uczOkZWYa/7wEaKCVTYMZ9Cw/MR7EgjoeT6+2Eg0idXNv
 EGwNA0TXFiJmqIU7J0eCWp779hFKyaiPUkloIsg4TQnL2bZMma1yP6DCf2+6o6zP
 xfONLGBakNuRmEcJXp08nBhuDLmCELFFsnEU08qzdpMNmrOCsm96RVo5ALnNZLJT
 oByxga7XU4QCnKLxPr3VF7sTUQ90/Yde+R061lkbzoKyQIffcYjcQ3qPLmi0T3+Y
 JLPBbzg8EFNd0o8Z5y6CR5k2yDfZXbde59Ani6cOjKQz7tY3UoF0+q+nLFKy59tj
 jp8qPgVRYbCAzDIkBprb+dyQHHZoPPy7waYDoHgtOk2kZRGvJHZyJkhAuIj3kMtG
 tp3uf3VpyAfKieR/q137wu6a0dnIiycftBmaB+OOJVmAi43t5qWezH0WwPtCLeqI
 sEd/bEBuawasIXHzxmfQsumTspPAbWuTSM7I4RT+Xpa6V1vYxfRTgC+pPOt8kQ/5
 DgeJC8NvwY4=
 =NYzQ
 -----END PGP SIGNATURE-----

Merge tag 'core-urgent-2026-04-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull entry cleanup from Ingo Molnar:
 "Remove the unused ARCH_SYSCALL_WORK_{ENTER,EXIT} flags"

* tag 'core-urgent-2026-04-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  entry: Kill ARCH_SYSCALL_WORK_{ENTER,EXIT}
2026-04-20 15:07:28 -07:00
Sean Christopherson
dfd2a8b07c KVM: selftests: Replace "paddr" with "gpa" throughout
Replace all variations of "paddr" variables in KVM selftests with "gpa",
with the exception of the ELF structures, as those fields are not specific
to guest virtual addresses, to complete the conversion from vm_paddr_t to
gpa_t.

No functional change intended.

Link: https://patch.msgid.link/20260420212004.3938325-20-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
2026-04-20 14:54:17 -07:00
Sean Christopherson
abc374191d KVM: selftests: Replace "u64 nested_paddr" with "gpa_t l2_gpa"
In x86's nested TDP APIs, use the appropriate gpa_t typedef and rename
variables from nested_paddr to l2_gpa to match KVM x86's nomenclature.

No functional change intended.

Link: https://patch.msgid.link/20260420212004.3938325-19-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
2026-04-20 14:54:17 -07:00
Sean Christopherson
df079910f9 KVM: selftests: Replace "u64 gpa" with "gpa_t" throughout
Use gpa_t instead of u64 for obvious declarations of GPA variables.

No functional change intended.

Link: https://patch.msgid.link/20260420212004.3938325-18-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
2026-04-20 14:54:17 -07:00
Sean Christopherson
014dfb7b9b KVM: selftests: Replace "vaddr" with "gva" throughout
Replace all variations of "vaddr" variables in KVM selftests with "gva",
with the exception of the ELF structures, as those fields are not specific
to guest virtual addresses, to complete the conversion from vm_vaddr_t to
gva_t.

Opportunistically use gva_t instead of u64 for relevant variables, and
fixup indentation as appropriate.

No functional change intended.

Link: https://patch.msgid.link/20260420212004.3938325-17-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
2026-04-20 14:54:17 -07:00
Sean Christopherson
a662c4e038 KVM: selftests: Clarify that arm64's inject_uer() takes a host PA, not a guest PA
Rename inject_uer()'s @paddr to @hpa to make it more obvious that it
injects an error using a host PA, not a guest PA.

No functional change intended.

Link: https://patch.msgid.link/20260420212004.3938325-16-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
2026-04-20 14:54:17 -07:00
Sean Christopherson
4babae4ca1 KVM: selftests: Rename translate_to_host_paddr() => translate_hva_to_hpa()
Rename arm64's translate_to_host_paddr() to translate_hva_to_hpa() and
update variable names to match, as using "vaddr" and "paddr" terminology
is super confusing due to selftests using those exact names for *guest*
addresses.

Opportunisitically drop superfluous local page_addr and paddr variables.

No functional change intended.

Link: https://patch.msgid.link/20260420212004.3938325-15-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
2026-04-20 14:54:17 -07:00
Sean Christopherson
3fd995905b KVM: selftests: Rename vm_vaddr_populate_bitmap() => vm_populate_gva_bitmap()
Now that KVM selftests use gva_t instead of vm_vaddr_t, rename the helper
for populating the initial GVA bitmap to drop the defunct terminology and
use "vm" for the scope.

Opportunistically fixup the declaration of the API, which has been broken
since day 1.  The flaw went unnoticed because the sole caller is defined
after the weak version, i.e. can see the prototype without a previous
declaration.

No functional change intended.

Fixes: e8b9a055fa ("KVM: arm64: selftests: Align VA space allocator with TTBR0")
Link: https://patch.msgid.link/20260420212004.3938325-14-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
2026-04-20 14:54:17 -07:00
Sean Christopherson
48321f609a KVM: selftests: Rename vm_vaddr_unused_gap() => vm_unused_gva_gap()
Now that KVM selftests use gva_t instead of vm_vaddr_t, rename the API
for finding an unused range of virtual memory to drop the defunct
terminology and use "vm" for the scope.

Opportunistically clean up the function comment to drop superfluous
and redundant information.

No functional change intended.

Link: https://patch.msgid.link/20260420212004.3938325-13-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
2026-04-20 14:54:17 -07:00
Sean Christopherson
85819fa0e3 KVM: selftests: Drop "vaddr_" from APIs that allocate memory for a given VM
Now that KVM selftests use gva_t instead of vm_vaddr_t, drop "vaddr_" from
the core memory allocation APIs as the information is extraneous and does
more harm than good.  E.g. the APIs don't _just_ allocate virtual memory,
they allocate backing physical memory and install mappings in the guest
page tables.  And as proven by kmalloc() and malloc(), developers generally
expect that allocations come with a working virtual address.

Opportunistically clean up the function comment for vm_alloc(), and drop
the misleading and superfluous comments for its wrappers.

No functional change intended.

Link: https://patch.msgid.link/20260420212004.3938325-12-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
2026-04-20 14:54:17 -07:00
David Matlack
6ec982b5a2 KVM: selftests: Use u8 instead of uint8_t
Use u8 instead of uint8_t to make the KVM selftests code more concise
and more similar to the kernel (since selftests are primarily developed
by kernel developers).

This commit was generated with the following command:

  git ls-files tools/testing/selftests/kvm | xargs sed -i 's/uint8_t/u8/g'

Then by manually adjusting whitespace to make checkpatch.pl happy.

No functional change intended.

Signed-off-by: David Matlack <dmatlack@google.com>
Link: https://patch.msgid.link/20260420212004.3938325-11-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
2026-04-20 14:54:17 -07:00
David Matlack
2540ebd603 KVM: selftests: Use s16 instead of int16_t
Use s16 instead of int16_t to make the KVM selftests code more concise
and more similar to the kernel (since selftests are primarily developed
by kernel developers).

This commit was generated with the following command:

  git ls-files tools/testing/selftests/kvm | xargs sed -i 's/int16_t/s16/g'

Then by manually adjusting whitespace to make checkpatch.pl happy.

No functional change intended.

Signed-off-by: David Matlack <dmatlack@google.com>
Link: https://patch.msgid.link/20260420212004.3938325-10-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
2026-04-20 14:54:17 -07:00
David Matlack
19d0914920 KVM: selftests: Use u16 instead of uint16_t
Use u16 instead of uint16_t to make the KVM selftests code more concise
and more similar to the kernel (since selftests are primarily developed
by kernel developers).

This commit was generated with the following command:

  git ls-files tools/testing/selftests/kvm | xargs sed -i 's/uint16_t/u16/g'

Then by manually adjusting whitespace to make checkpatch.pl happy.

No functional change intended.

Signed-off-by: David Matlack <dmatlack@google.com>
Link: https://patch.msgid.link/20260420212004.3938325-9-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
2026-04-20 14:54:17 -07:00
David Matlack
7b60918768 KVM: selftests: Use s32 instead of int32_t
Use s32 instead of int32_t to make the KVM selftests code more concise
and more similar to the kernel (since selftests are primarily developed
by kernel developers).

This commit was generated with the following command:

  git ls-files tools/testing/selftests/kvm | xargs sed -i 's/int32_t/s32/g'

Then by manually adjusting whitespace to make checkpatch.pl happy.

No functional change intended.

Signed-off-by: David Matlack <dmatlack@google.com>
Link: https://patch.msgid.link/20260420212004.3938325-8-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
2026-04-20 14:54:16 -07:00
David Matlack
0c3a877469 KVM: selftests: Use u32 instead of uint32_t
Use u32 instead of uint32_t to make the KVM selftests code more concise
and more similar to the kernel (since selftests are primarily developed
by kernel developers).

This commit was generated with the following command:

  git ls-files tools/testing/selftests/kvm | xargs sed -i 's/uint32_t/u32/g'

Then by manually adjusting whitespace to make checkpatch.pl happy.

No functional change intended.

Signed-off-by: David Matlack <dmatlack@google.com>
Link: https://patch.msgid.link/20260420212004.3938325-7-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
2026-04-20 14:54:16 -07:00
David Matlack
286e8903ae KVM: selftests: Use s64 instead of int64_t
Use s64 instead of int64_t to make the KVM selftests code more concise
and more similar to the kernel (since selftests are primarily developed
by kernel developers).

This commit was generated with the following command:

  git ls-files tools/testing/selftests/kvm | xargs sed -i 's/int64_t/s64/g'

Then by manually adjusting whitespace to make checkpatch.pl happy.

No functional change intended.

Signed-off-by: David Matlack <dmatlack@google.com>
Link: https://patch.msgid.link/20260420212004.3938325-6-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
2026-04-20 14:54:16 -07:00
David Matlack
26f8453288 KVM: selftests: Use u64 instead of uint64_t
Use u64 instead of uint64_t to make the KVM selftests code more concise
and more similar to the kernel (since selftests are primarily developed
by kernel developers).

This commit was generated with the following command:

  git ls-files tools/testing/selftests/kvm | xargs sed -i 's/uint64_t/u64/g'

Then by manually adjusting whitespace to make checkpatch.pl happy.

Include <linux/types.h> in include/kvm_util_types.h, iinclude/test_util.h,
and include/x86/pmu.h to pick up the tools-defined u64.  Arguably, all
headers (especially kvm_util_types.h) should have already been including
stdint.h to get uint64_t from the libc headers, but the missing dependency
only rears its head once KVM uses u64 instead of uint64_t.

No functional change intended.

Signed-off-by: David Matlack <dmatlack@google.com>
[sean: rename pread_uint64() => pread_u64, expand on types.h include]
Link: https://patch.msgid.link/20260420212004.3938325-5-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
2026-04-20 14:54:16 -07:00
David Matlack
6d3494255a KVM: selftests: Use gpa_t for GPAs in Hyper-V selftests
Fix various Hyper-V selftests to use gpa_t for variables that contain
guest physical addresses, rather than gva_t.  In practice, the bugs are
benign as both gva_t and gpa_t are u64 typedefs, i.e. gpa_t and gva_t are
interchangeable from a functional perspective, the code is just confusing.

No functional change intended.

Signed-off-by: David Matlack <dmatlack@google.com>
[sean: call out that both are u64 typedefs]
Link: https://patch.msgid.link/20260420212004.3938325-4-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
2026-04-20 14:54:16 -07:00
David Matlack
97dcda3fdc KVM: selftests: Use gpa_t instead of vm_paddr_t
Replace all occurrences of vm_paddr_t with gpa_t to align with KVM code
and with the conversion helpers (e.g. addr_hva2gpa()).

This commit was generated with the following command:

  git ls-files tools/testing/selftests/kvm | xargs sed -i 's/vm_paddr_/gpa_/g'

Then by manually adjusting whitespace to make checkpatch.pl happy.

No functional change intended.

Signed-off-by: David Matlack <dmatlack@google.com>
[sean: drop bogus changelog blurb about renaming functions]
Link: https://patch.msgid.link/20260420212004.3938325-3-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
2026-04-20 14:54:16 -07:00
David Matlack
5567fc9dcd KVM: selftests: Use gva_t instead of vm_vaddr_t
Replace all occurrences of vm_vaddr_t with gva_t to align with KVM code
and with the conversion helpers (e.g. addr_gva2hva()).

This commit was generated with the following command:

  git ls-files tools/testing/selftests/kvm | xargs sed -i 's/vm_vaddr_/gva_/g'

Then by manually adjusting whitespace to make checkpatch.pl happy, and
dropping renames of functions that allocate memory within a given VM.

No functional change intended.

Signed-off-by: David Matlack <dmatlack@google.com>
[sean: drop renames of allocator APIs]
Link: https://patch.msgid.link/20260420212004.3938325-2-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
2026-04-20 14:54:16 -07:00
Fernando Fernandez Mancera
711987ba28 netfilter: nfnetlink_osf: fix potential NULL dereference in ttl check
The nf_osf_ttl() function accessed skb->dev to perform a local interface
address lookup without verifying that the device pointer was valid.

Additionally, the implementation utilized an in_dev_for_each_ifa_rcu
loop to match the packet source address against local interface
addresses. It assumed that packets from the same subnet should not see a
decrement on the initial TTL. A packet might appear it is from the same
subnet but it actually isn't especially in modern environments with
containers and virtual switching.

Remove the device dereference and interface loop. Replace the logic with
a switch statement that evaluates the TTL according to the ttl_check.

Fixes: 11eeef41d5 ("netfilter: passive OS fingerprint xtables match")
Reported-by: Kito Xu (veritas501) <hxzene@gmail.com>
Closes: https://lore.kernel.org/netfilter-devel/20260414074556.2512750-1-hxzene@gmail.com/
Signed-off-by: Fernando Fernandez Mancera <fmancera@suse.de>
Reviewed-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2026-04-20 23:45:44 +02:00
Fernando Fernandez Mancera
f5ca450087 netfilter: nfnetlink_osf: fix out-of-bounds read on option matching
In nf_osf_match(), the nf_osf_hdr_ctx structure is initialized once
and passed by reference to nf_osf_match_one() for each fingerprint
checked. During TCP option parsing, nf_osf_match_one() advances the
shared ctx->optp pointer.

If a fingerprint perfectly matches, the function returns early without
restoring ctx->optp to its initial state. If the user has configured
NF_OSF_LOGLEVEL_ALL, the loop continues to the next fingerprint.
However, because ctx->optp was not restored, the next call to
nf_osf_match_one() starts parsing from the end of the options buffer.
This causes subsequent matches to read garbage data and fail
immediately, making it impossible to log more than one match or logging
incorrect matches.

Instead of using a shared ctx->optp pointer, pass the context as a
constant pointer and use a local pointer (optp) for TCP option
traversal. This makes nf_osf_match_one() strictly stateless from the
caller's perspective, ensuring every fingerprint check starts at the
correct option offset.

Fixes: 1a6a0951fc ("netfilter: nfnetlink_osf: add missing fmatch check")
Suggested-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Fernando Fernandez Mancera <fmancera@suse.de>
Reviewed-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2026-04-20 23:45:43 +02:00
Yingnan Zhang
67bf42cae4 ipvs: fix MTU check for GSO packets in tunnel mode
Currently, IPVS skips MTU checks for GSO packets by excluding them with
the !skb_is_gso(skb) condition. This creates problems when IPVS tunnel
mode encapsulates GSO packets with IPIP headers.

The issue manifests in two ways:

1. MTU violation after encapsulation:
   When a GSO packet passes through IPVS tunnel mode, the original MTU
   check is bypassed. After adding the IPIP tunnel header, the packet
   size may exceed the outgoing interface MTU, leading to unexpected
   fragmentation at the IP layer.

2. Fragmentation with problematic IP IDs:
   When net.ipv4.vs.pmtu_disc=1 and a GSO packet with multiple segments
   is fragmented after encapsulation, each segment gets a sequentially
   incremented IP ID (0, 1, 2, ...). This happens because:

   a) The GSO packet bypasses MTU check and gets encapsulated
   b) At __ip_finish_output, the oversized GSO packet is split into
      separate SKBs (one per segment), with IP IDs incrementing
   c) Each SKB is then fragmented again based on the actual MTU

   This sequential IP ID allocation differs from the expected behavior
   and can cause issues with fragment reassembly and packet tracking.

Fix this by properly validating GSO packets using
skb_gso_validate_network_len(). This function correctly validates
whether the GSO segments will fit within the MTU after segmentation. If
validation fails, send an ICMP Fragmentation Needed message to enable
proper PMTU discovery.

Fixes: 4cdd34084d ("netfilter: nf_conntrack_ipv6: improve fragmentation handling")
Signed-off-by: Yingnan Zhang <342144303@qq.com>
Acked-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2026-04-20 23:45:43 +02:00
Pablo Neira Ayuso
6eda0d771f netfilter: nat: use kfree_rcu to release ops
Florian Westphal says:

"Historically this is not an issue, even for normal base hooks: the data
path doesn't use the original nf_hook_ops that are used to register the
callbacks.

However, in v5.14 I added the ability to dump the active netfilter
hooks from userspace.

This code will peek back into the nf_hook_ops that are available
at the tail of the pointer-array blob used by the datapath.

The nat hooks are special, because they are called indirectly from
the central nat dispatcher hook. They are currently invisible to
the nfnl hook dump subsystem though.

But once that changes the nat ops structures have to be deferred too."

Update nf_nat_register_fn() to deal with partial exposition of the hooks
from error path which can be also an issue for nfnetlink_hook.

Fixes: e2cf17d377 ("netfilter: add new hook nfnl subsystem")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2026-04-20 23:45:41 +02:00
Pablo Neira Ayuso
b6fe26f86a netfilter: xtables: restrict several matches to inet family
This is a partial revert of:

  commit ab4f21e6fb ("netfilter: xtables: use NFPROTO_UNSPEC in more extensions")

to allow ipv4 and ipv6 only.

- xt_mac
- xt_owner
- xt_physdev

These extensions are not used by ebtables in userspace.

Moreover, xt_realm is only for ipv4, since dst->tclassid is ipv4
specific.

Fixes: ab4f21e6fb ("netfilter: xtables: use NFPROTO_UNSPEC in more extensions")
Reported-by: "Kito Xu (veritas501)" <hxzene@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2026-04-20 23:27:52 +02:00
Florian Westphal
6e7066bdb4 netfilter: conntrack: remove sprintf usage
Replace it with scnprintf, the buffer sizes are expected to be large enough
to hold the result, no need for snprintf+overflow check.

Increase buffer size in mangle_content_len() while at it.

BUG: KASAN: stack-out-of-bounds in vsnprintf+0xea5/0x1270
Write of size 1 at addr [..]
 vsnprintf+0xea5/0x1270
 sprintf+0xb1/0xe0
 mangle_content_len+0x1ac/0x280
 nf_nat_sdp_session+0x1cc/0x240
 process_sdp+0x8f8/0xb80
 process_invite_request+0x108/0x2b0
 process_sip_msg+0x5da/0xf50
 sip_help_tcp+0x45e/0x780
 nf_confirm+0x34d/0x990
 [..]

Fixes: 9fafcd7b20 ("[NETFILTER]: nf_conntrack/nf_nat: add SIP helper port")
Reported-by: Yiming Qian <yimingqian591@gmail.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2026-04-20 23:27:46 +02:00
Xiang Mei
2195574dc6 netfilter: nfnetlink_osf: fix divide-by-zero in OSF_WSS_MODULO
nf_osf_match_one() computes ctx->window % f->wss.val in the
OSF_WSS_MODULO branch with no guard for f->wss.val == 0. A
CAP_NET_ADMIN user can add such a fingerprint via nfnetlink; a
subsequent matching TCP SYN divides by zero and panics the kernel.

Reject the bogus fingerprint in nfnl_osf_add_callback() above the
per-option for-loop. f->wss is per-fingerprint, not per-option, so
the check must run regardless of f->opt_num (including 0). Also
reject wss.wc >= OSF_WSS_MAX; nf_osf_match_one() already treats that
as "should not happen".

Crash:
 Oops: divide error: 0000 [#1] SMP KASAN NOPTI
 RIP: 0010:nf_osf_match_one (net/netfilter/nfnetlink_osf.c:98)
 Call Trace:
 <IRQ>
  nf_osf_match (net/netfilter/nfnetlink_osf.c:220)
  xt_osf_match_packet (net/netfilter/xt_osf.c:32)
  ipt_do_table (net/ipv4/netfilter/ip_tables.c:348)
  nf_hook_slow (net/netfilter/core.c:622)
  ip_local_deliver (net/ipv4/ip_input.c:265)
  ip_rcv (include/linux/skbuff.h:1162)
  __netif_receive_skb_one_core (net/core/dev.c:6181)
  process_backlog (net/core/dev.c:6642)
  __napi_poll (net/core/dev.c:7710)
  net_rx_action (net/core/dev.c:7945)
  handle_softirqs (kernel/softirq.c:622)

Fixes: 11eeef41d5 ("netfilter: passive OS fingerprint xtables match")
Reported-by: Weiming Shi <bestswngs@gmail.com>
Suggested-by: Florian Westphal <fw@strlen.de>
Suggested-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Xiang Mei <xmei5@asu.edu>
Reviewed-by: Fernando Fernandez Mancera <fmancera@suse.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2026-04-20 23:27:41 +02:00
Pablo Neira Ayuso
b336fdbb71 netfilter: nft_osf: restrict it to ipv4
This expression only supports for ipv4, restrict it.

Fixes: b96af92d6e ("netfilter: nf_tables: implement Passive OS fingerprint module in nft_osf")
Acked-by: Florian Westphal <fw@strlen.de>
Reviewed-by: Fernando Fernandez Mancera <fmancera@suse.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2026-04-20 23:27:36 +02:00
Jens Axboe
42a702aaed io_uring: fix iowq_limits data race in tctx node addition
__io_uring_add_tctx_node() reads ctx->int_flags and
ctx->iowq_limits[0..1] without holding ctx->uring_lock, while
io_register_iowq_max_workers() writes these same fields under the lock.

Mostly an application problem if you try and make these race, but let's
silence KCSAN by just grabbing the ->uring_lock around the operation.
This is a slow path operation anyway, and ->uring_lock will be grabbed
by submission right after anyway.

Fixes: 2e480058dd ("io-wq: provide a way to limit max number of workers")
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2026-04-20 14:57:21 -06:00
Rick Edgecombe
9874b2917b x86/shstk: Prevent deadlock during shstk sigreturn
During sigreturn the shadow stack signal frame is popped. The kernel does
this by reading the shadow stack using normal read accesses. When it can't
assume the memory is shadow stack, it takes extra steps to makes sure it is
reading actual shadow stack memory and not other normal readable memory. It
does this by holding the mmap read lock while doing the access and checking
the flags of the VMA.

Unfortunately that is not safe. If the read of the shadow stack sigframe
hits a page fault, the fault handler will try to recursively grab another
mmap read lock. This normally works ok, but if a writer on another CPU is
also waiting, the second read lock could fail and cause a deadlock.

Fix this by not holding mmap lock during the read access to userspace.

Instead use mmap_lock_speculate_...() to watch for changes between dropping
mmap lock and the userspace access. Retry if anything grabbed an mmap write
lock in between and could have changed the VMA.

These mmap_lock_speculate_...() helpers use mm::mm_lock_seq, which is only
available when PER_VMA_LOCK is configured. So make X86_USER_SHADOW_STACK
depend on it. On x86, PER_VMA_LOCK is a default configuration for SMP
kernels. So drop support for the other configs under the assumption that
the !SMP shadow stack user base does not exist.

Currently there is a check that skips the lookup work when the SSP can be
assumed to be on a shadow stack. While reorganizing the function, remove
the optimization to make the tricky code flows more common, such that
issues like this cannot escape detection for so long.

Fixes: 7fad2a432c ("x86/shstk: Check that signal frame is shadow stack mem")
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Rick Edgecombe <rick.p.edgecombe@intel.com>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Reviewed-by: Dave Hansen <dave.hansen@intel.com>
Reviewed-by: Thomas Gleixner <tglx@kernel.org>
Cc: stable@vger.kernel.org
2026-04-20 22:54:24 +02:00
Jens Axboe
41859843f2 io_uring/tctx: mark io_wq as exiting before error path teardown
syzbot reports that it's hitting the below condition for exiting an
io_wq context:

WARN_ON_ONCE(!test_bit(IO_WQ_BIT_EXIT, &wq->state))

in io_wq_put_and_exit(), which can be triggered with memory allocation
fault injection. Ensure that the io_wq is marked as exiting to silence
this warning trigger.

Reported-by: syzbot+79a4cc863a8db58cd92b@syzkaller.appspotmail.com
Fixes: 7880174e1e ("io_uring/tctx: clean up __io_uring_add_tctx_node() error handling")
Reviewed-by: Clément Léger <cleger@meta.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2026-04-20 14:47:37 -06:00
Jens Axboe
ee5417fd02 io_uring/tctx: check for setup tctx->io_wq before teardown
As with the idling code before it, the error exit path should check for
a NULL tctx->io_wq before calling io_wq_put_and_exit().

Fixes: 7880174e1e ("io_uring/tctx: clean up __io_uring_add_tctx_node() error handling")
Reported-by: Dan Carpenter <error27@gmail.com>
Reviewed-by: Clément Léger <cleger@meta.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2026-04-20 14:47:29 -06:00
Tejun Heo
463a4436d6 Merge branch 'for-7.1-fixes' into for-7.2
Pull to receive:

 2d2b026c3e ("sched_ext: Deny SCX kfuncs to non-SCX struct_ops programs")

which modifies scx_kfunc_context_filter() to avoid conflicts with planned
changes in for-7.2.

Signed-off-by: Tejun Heo <tj@kernel.org>
2026-04-20 09:33:34 -10:00
Greg Kroah-Hartman
2fc87d37be drm/nouveau: fix u32 overflow in pushbuf reloc bounds check
nouveau_gem_pushbuf_reloc_apply() validates each relocation with

    if (r->reloc_bo_offset + 4 > nvbo->bo.base.size)

but reloc_bo_offset is __u32 (uapi/drm/nouveau_drm.h) and the integer
literal 4 promotes to unsigned int, so the addition is performed in 32
bits and wraps before the comparison against the size_t bo size.

Cast to u64 so the addition happens in 64-bit arithmetic.

Cc: Lyude Paul <lyude@redhat.com>
Cc: Danilo Krummrich <dakr@kernel.org>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maxime Ripard <mripard@kernel.org>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: David Airlie <airlied@gmail.com>
Cc: Simona Vetter <simona@ffwll.ch>
Reported-by: Anthropic
Cc: stable <stable@kernel.org>
Assisted-by: gkh_clanker_t1000
Fixes: a1606a9596 ("drm/nouveau: new gem pushbuf interface, bump to 0.0.16")
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[ Add Fixes: tag. - Danilo ]
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
2026-04-20 21:23:14 +02:00
Steven Rostedt
932cdaf3e2 ktest: Add logfile to failure directory
The logfile contains a lot of useful information about the tests being
run. Add it to the stored failure directory when the test fails.

Cc: John 'Warthog9' Hawley <warthog9@kernel.org>
Link: https://patch.msgid.link/20260420142315.7bbc3624@fedora
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2026-04-20 15:23:13 -04:00
Steven Rostedt
768059ede3 ktest: Fix the month in the name of the failure directory
The Perl localtime() function returns the month starting at 0 not 1. This
caused the date produced to create the directory for saving files of a
failed run to have the month off by one.

  machine-test-useconfig-fail-20260314073628

The above happened in April, not March. The correct name should have been:

  machine-test-useconfig-fail-20260414073628

This was somewhat confusing.

Cc: stable@vger.kernel.org
Cc: John 'Warthog9' Hawley <warthog9@kernel.org>
Link: https://patch.msgid.link/20260420142426.33ad0293@fedora
Fixes: 7faafbd696 ("ktest: Add open and close console and start stop monitor")
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2026-04-20 15:23:13 -04:00
Linus Torvalds
da6b5aae84 platform-drivers-x86 for v7.1-1
Highlights:
 
 - asus-wmi:
   - Retain battery charge threshold during boot which avoids unsolicited
     change to 100%. Return -ENODATA when the limit is not yet known
   - Improve screenpad power/brightness handling consistency
   - Fix screenpad brightness range
 
 - barco-p50-gpio: Normalize gpio_get return values
 
 - bitland-mifs-wmi: Add driver for Bitland laptops (supports platform
                     profile,hwmon, kbd backlight, gpu mode, hotkeys, and
                     fan boost)
 
 - dell_rbu: Fix using uninitialized value in sysfs write function
 
 - dell-wmi-sysman: Respect destination length when constructing enum
                    strings
 
 - hp-wmi:
   - Propagate fan setting apply failures and log an error
   - Fix sysfs write vs work handler cancel_delayed_work_sync() deadlock
   - Correct keepalive schedule_delayed_work() to mod_delayed_work()
   - Fix u8 underflows in GPU delta calculation
   - Use mutex to protect fan pwm/mode
   - Ignore kbd backlight and FnLock key events that are handled by FW
   - Fix fan table parsing (use correct field)
   - Add support for Omen 14-fb0xxx, 16-n0xxx, 16-wf1xxx, and Omen MAX
     16-ak0xxxx
 
 - input: trackpoint & thinkpad_acpi: Enable doubletap by default and
                                      add sysfs enable/disable
 
 - int3472: Add support for GPIO type 0x02 (IR flood LED)
 
 - intel-speed-select: (updated to v1.26)
   - Avoid using current base frequency as maximum
   - Fix CPU extended family ID decoding
   - Fix exit code
   - Improve error reporting
 
 - intel/vsec: Refactor to support ACPI-enumerated PMT endpoints.
 
 - pcengines-apuv2: Attach software node to the gpiochip
 
 - uniwill:
   - Refactor hwmon to smaller parts to accomodate HW diversity
   - Support USB-C power/performance priority switch through sysfs
   - Add another XMG Fusion 15 (L19) DMI vendor
   - Enable fine-grained features to device lineup mapping
 
 - wmi: Perform output size check within WMI core to allow simpler WMI
        drivers
 
 - acpi_driver -> platform driver conversions (a large number of changes
   from Rafael J. Wysocki)
 
 - Miscellaneous cleanups / refactoring / improvements
 
 The following is an automated shortlog grouped by driver:
 
 acer-wireless:
  -  Convert ACPI driver to a platform one
  -  Register ACPI notify handler directly
 
 asus-laptop:
  -  Convert ACPI driver to a platform one
  -  Register ACPI notify handler directly
 
 asus-wireless:
  -  Convert ACPI driver to a platform one
  -  Register ACPI notify handler directly
 
 asus-wmi:
  -  adjust screenpad power/brightness handling
  -  do not enforce a battery charge threshold
  -  fix screenpad brightness range
 
 barco-p50-gpio:
  -  convert to guard() notation
  -  normalize return value of gpio_get
 
 bitland-mifs-wmi:
  -  Add new Bitland MIFS WMI driver
 
 dell/dell-rbtn:
  -  Convert ACPI driver to a platform one
  -  Register ACPI notify handler directly
 
 dell_rbu:
  -  avoid uninit value usage in packet_size_write()
 
 dell-wmi-sysman:
  -  bound enumeration string aggregation
  -  Clean up security buffer helpers
  -  Fix typo in function comment
  -  Use standard kobj_sysfs_ops
  -  Use sysfs_emit{_at} in show functions
 
 Documentation: laptops:
  -  Update documentation for uniwill laptops
 
 Documentation:
  -  thinkpad-acpi - Document doubletap_enable attribute
 
 eeepc-laptop:
  -  Convert ACPI driver to a platform one
  -  Register ACPI notify handler directly
 
 fujitsu:
  -  Convert backlight driver to a platform one
  -  Convert laptop driver to a platform one
  -  Register ACPI notify handlers directly
  -  Reorder code to avoid forward declarations
 
 fujitsu-tablet:
  -  Convert ACPI driver to a platform one
 
 hp-wmi:
  -  add locking for concurrent hwmon access
  -  add Omen 14-fb0xxx (board 8C58) support
  -  Add support for Omen 16-n0xxx (8A44)
  -  Add support for Omen 16-wf1xxx (8C77)
  -  Add support for OMEN MAX 16-ak0xxx (8D87)
  -  avoid cancel_delayed_work_sync from work handler
  -  fix fan table parsing
  -  fix ignored return values in fan settings
  -  fix u8 underflow in gpu_delta calculation
  -  Ignore backlight and FnLock events
  -  use mod_delayed_work to reset keep-alive timer
 
 input:
  -  trackpoint - Enable doubletap by default on capable devices
 
 int3472:
  -  Add support for GPIO type 0x02 (IR flood LED)
  -  Parameterize LED con_id in registration
  -  Rename pled to led in LED registration code
  -  Use local variable for LED struct access
 
 intel/rst:
  -  Convert ACPI driver to a platform one
 
 intel/smartconnect:
  -  Convert ACPI driver to a platform one
 
 intel/tpmi:
  -  Use 32 bit aligned address for debugfs mem write
 
 intel/vsec:
  -  Decouple add/link helpers from PCI
  -  Make driver_data info const
  -  Plumb ACPI PMT discovery tables through vsec
  -  Refactor base_addr handling
  -  Return real error codes from registration path
  -  Switch exported helpers from pci_dev to device
 
 lg-laptop:
  -  Convert ACPI driver to a platform one
  -  Drop debug-only ACPI notify handler
 
 nvsw-sn2201:
  -  Drop unused include
 
 panasonic-laptop:
  -  Convert ACPI driver to a platform one
  -  Fix OPTD notifier registration and cleanup
  -  Make pcc_register_optd_notifier() void
  -  Register ACPI notify handler directly
  -  Remove redundant checks from 3 functions
 
 pcengines-apuv2:
  -  attach software node to the gpiochip
 
 sony-laptop:
  -  Convert NC driver to a platform one
  -  Convert PIC driver to a platform one
  -  Register ACPI notify handler directly
 
 surface: hotplug:
  -  Correct inclusion for GPIO APIs
 
 surface: surfacepro3_button:
  -  Convert to a platform driver
  -  Drop wakeup source on remove
  -  Register ACPI notify handler
 
 system76:
  -  Convert ACPI driver to a platform one
  -  Drop redundant devm_led_classdev_unregister()
  -  Register ACPI notify handler directly
 
 thinkpad_acpi:
  -  Add sysfs control for TrackPoint double-tap
  -  Drop ACPI driver registration
  -  remove obsolete TODO comment
  -  use seq_puts() instead of seq_printf()
 
 tools/power/x86/intel-speed-select:
  -  Avoid current base freq as maximum
  -  Fix cpu extended family ID decoding
  -  Fix output when running on unsupported CLX platforms
  -  Fix some program return value
  -  Print Version info when Incompatible API version is detected
  -  v1.26 release
 
 topstar-laptop:
  -  Convert ACPI driver to a platform one
  -  Register ACPI notify handler directly
 
 toshiba_acpi:
  -  Convert ACPI driver to a platform one
  -  Register ACPI notify handler directly
  -  Reorder code to avoid forward declaration
 
 toshiba_bluetooth:
  -  Convert ACPI driver to a platform one
  -  Register ACPI notify handler directly
 
 toshiba_haps:
  -  Convert ACPI driver to a platform one
  -  Register ACPI notify handler directly
 
 uniwill-laptop:
  -  Apply features across all TUXEDO devices
  -  Fix signedness bug
  -  Fix XMG Fusion 15 (L19) entries
  -  Implement USB-C power priority setting
  -  Rework hwmon feature defines
 
 wireless-hotkey:
  -  Convert ACPI driver to a platform one
  -  Register ACPI notify handler directly
 
 wmi:
  -  Add wmidev_invoke_procedure()
  -  Convert drivers to use wmidev_invoke_procedure()
  -  Extend wmidev_invoke_method() to reject undersized data
  -  Extend wmidev_query_block() to reject undersized data
  -  Prepare to reject undersized unmarshalling results
  -  Replace .no_notify_data with .min_event_size
 
 x86:
  -  remove unnecessary module_init/exit() functions
 
 Merges:
  -  Merge branch 'intel-sst' of https://github.com/spandruvada/linux-kernel into review-ilpo-next
  -  Merge tag 'fixes' into 'for-next'
 -----BEGIN PGP SIGNATURE-----
 
 iHUEABYIAB0WIQSCSUwRdwTNL2MhaBlZrE9hU+XOMQUCaeYxSwAKCRBZrE9hU+XO
 MRzTAQCPUKVOpSY/cjtPXVBn0uJbAo1MSvytv00Kv7dcatvrrwEA9lqmwOfl0kzr
 CowEVVCD3om++W9vOsL65hachbAl1QA=
 =1qkw
 -----END PGP SIGNATURE-----

Merge tag 'platform-drivers-x86-v7.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86

Pull x86 platform driver updates from Ilpo Järvinen:
 "asus-wmi:
   - Retain battery charge threshold during boot which avoids
     unsolicited change to 100%. Return -ENODATA when the limit
     is not yet known
   - Improve screenpad power/brightness handling consistency
   - Fix screenpad brightness range

  barco-p50-gpio:
   - Normalize gpio_get return values

  bitland-mifs-wmi:
   - Add driver for Bitland laptops (supports platform profile,
     hwmon, kbd backlight, gpu mode, hotkeys, and fan boost)

  dell_rbu:
   - Fix using uninitialized value in sysfs write function

  dell-wmi-sysman:
   - Respect destination length when constructing enum strings

  hp-wmi:
   - Propagate fan setting apply failures and log an error
   - Fix sysfs write vs work handler cancel_delayed_work_sync() deadlock
   - Correct keepalive schedule_delayed_work() to mod_delayed_work()
   - Fix u8 underflows in GPU delta calculation
   - Use mutex to protect fan pwm/mode
   - Ignore kbd backlight and FnLock key events that are handled by FW
   - Fix fan table parsing (use correct field)
   - Add support for Omen 14-fb0xxx, 16-n0xxx, 16-wf1xxx, and
     Omen MAX 16-ak0xxxx

  input: trackpoint & thinkpad_acpi:
   - Enable doubletap by default and add sysfs enable/disable

  int3472:
   - Add support for GPIO type 0x02 (IR flood LED)

  intel-speed-select: (updated to v1.26)
   - Avoid using current base frequency as maximum
   - Fix CPU extended family ID decoding
   - Fix exit code
   - Improve error reporting

  intel/vsec:
   - Refactor to support ACPI-enumerated PMT endpoints.

  pcengines-apuv2:
   - Attach software node to the gpiochip

  uniwill:
   - Refactor hwmon to smaller parts to accomodate HW diversity
   - Support USB-C power/performance priority switch through sysfs
   - Add another XMG Fusion 15 (L19) DMI vendor
   - Enable fine-grained features to device lineup mapping

  wmi:
   - Perform output size check within WMI core to allow simpler WMI
     drivers

  misc:
   - acpi_driver -> platform driver conversions (a large number of
     changes from Rafael J. Wysocki)
   - cleanups / refactoring / improvements"

* tag 'platform-drivers-x86-v7.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: (106 commits)
  platform/x86: hp-wmi: Add support for Omen 16-wf1xxx (8C77)
  platform/x86: hp-wmi: Add support for Omen 16-n0xxx (8A44)
  platform/x86: hp-wmi: Add support for OMEN MAX 16-ak0xxx (8D87)
  platform/x86: hp-wmi: fix fan table parsing
  platform/x86: hp-wmi: add Omen 14-fb0xxx (board 8C58) support
  platform/wmi: Replace .no_notify_data with .min_event_size
  platform/wmi: Extend wmidev_query_block() to reject undersized data
  platform/wmi: Extend wmidev_invoke_method() to reject undersized data
  platform/wmi: Prepare to reject undersized unmarshalling results
  platform/wmi: Convert drivers to use wmidev_invoke_procedure()
  platform/wmi: Add wmidev_invoke_procedure()
  platform/x86: int3472: Add support for GPIO type 0x02 (IR flood LED)
  platform/x86: int3472: Parameterize LED con_id in registration
  platform/x86: int3472: Rename pled to led in LED registration code
  platform/x86: int3472: Use local variable for LED struct access
  platform/x86: thinkpad_acpi: remove obsolete TODO comment
  platform/x86: dell-wmi-sysman: bound enumeration string aggregation
  platform/x86: hp-wmi: Ignore backlight and FnLock events
  platform/x86: uniwill-laptop: Fix signedness bug
  platform/x86: dell_rbu: avoid uninit value usage in packet_size_write()
  ...
2026-04-20 12:02:24 -07:00
Linus Torvalds
b69e478512 Backlight for v7.1
* Skyworks SKY81452:
     * Check the return value of `devm_gpiod_get_optional()` in `sky81452_bl_parse_dt()` to properly
       handle GPIO acquisition errors
 
   * Apple Backlight:
     * Convert the Apple Backlight ACPI driver to a proper platform driver, aligning with current ACPI
       binding practices
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEEdrbJNaO+IJqU8IdIUa+KL4f8d2EFAmnl4KAACgkQUa+KL4f8
 d2ERrA/+LQ+DSgUGb93Sl6o68yPc1lx1bsUHSYmyfZssTXHR08YSq3dMBgi6nT99
 GJDEENhC5Df8WTf4GkX7rSiWTyJN4EoSKPs8Kp93bpqYHEXMFUo3e7qOatJAT1tM
 IHOCtrO/X2Hvq6mH6RhxPpOnDJD6OzThtsN0xcxIiK3nCfcvZeZlLlGytjv2XGGG
 Fs2lv0P5J0VhcrKv15cObuZLkOB7hzYQy4Bp47wqvpKK3NV/I2typN6n+ALciCcu
 RtxAoxI2fXV4FrkPabogCYUbhPwtAlfAgbf2TNCPkRatbxA5rSwLzCjvz7dDWnU2
 YHeObxHV46woolmL3Z3O9KpzzGB6UzaNRgIhb8PCTT+QsfvQQTcoU0rklYfy32sH
 Y7nl5uMxa9O52JOFZEKG82wy4yHlUqqwi1SJ/og6yDNI0FLs0tNYS07N/5nKZGfz
 nZEN6hqzgSPdX44fL0mXhiDT8bF76fgz8HdHs3SK+o1CyC6nbMfQ6ytvbkiH3am7
 NBJnGYg6l3EJOO8wyDeNQQpf7mB1l0h/o+pJPJpQyZMAw0WGOEMSMT7EmF5SFgt0
 /Uu7fWBqFG6Jv6cpzrD2M5EmqUCaCQyDkahnF0nZg3CaIQyW0pgStBUmAcpeVJx6
 28rqSj7Krrkut6CJOXsfTTLGvsNmUC/UdFMs8xrOfcTU7POvwgo=
 =Cbwz
 -----END PGP SIGNATURE-----

Merge tag 'backlight-next-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight

Pull backlight updates from Lee Jones:
 "Apple Backlight:
   - Convert the Apple Backlight ACPI driver to a proper platform
     driver, aligning with current ACPI binding practices

  Skyworks SKY81452:
   - Check the return value of `devm_gpiod_get_optional()`
     to properly handle GPIO acquisition errors"

* tag 'backlight-next-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight:
  backlight: apple_bl: Convert to a platform driver
  backlight: sky81452-backlight: Check return value of devm_gpiod_get_optional() in sky81452_bl_parse_dt()
2026-04-20 11:49:38 -07:00
Yuan Zhaoming
a663bac71a net: mctp: fix don't require received header reserved bits to be zero
From the MCTP Base specification (DSP0236 v1.2.1), the first byte of
the MCTP header contains a 4 bit reserved field, and 4 bit version.

On our current receive path, we require those 4 reserved bits to be
zero, but the 9500-8i card is non-conformant, and may set these
reserved bits.

DSP0236 states that the reserved bits must be written as zero, and
ignored when read. While the device might not conform to the former,
we should accept these message to conform to the latter.

Relax our check on the MCTP version byte to allow non-zero bits in the
reserved field.

Fixes: 889b7da23a ("mctp: Add initial routing framework")
Signed-off-by: Yuan Zhaoming <yuanzm2@lenovo.com>
Cc: stable@vger.kernel.org
Acked-by: Jeremy Kerr <jk@codeconstruct.com.au>
Link: https://patch.msgid.link/20260417141340.5306-1-yuanzhaoming901030@126.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-04-20 11:46:57 -07:00
David Carlier
5638504a2a gtp: disable BH before calling udp_tunnel_xmit_skb()
gtp_genl_send_echo_req() runs as a generic netlink doit handler in
process context with BH not disabled. It calls udp_tunnel_xmit_skb(),
which eventually invokes iptunnel_xmit() — that uses __this_cpu_inc/dec
on softnet_data.xmit.recursion to track the tunnel xmit recursion level.

Without local_bh_disable(), the task may migrate between
dev_xmit_recursion_inc() and dev_xmit_recursion_dec(), breaking the
per-CPU counter pairing. The result is stale or negative recursion
levels that can later produce false-positive
SKB_DROP_REASON_RECURSION_LIMIT drops on either CPU.

The other udp_tunnel_xmit_skb() call sites in gtp.c are unaffected:
the data path runs under ndo_start_xmit and the echo response handlers
run from the UDP encap rx softirq, both with BH already disabled.

Fix it by disabling BH around the udp_tunnel_xmit_skb() call, mirroring
commit 2cd7e6971f ("sctp: disable BH before calling
udp_tunnel_xmit_skb()").

Fixes: 6f1a9140ec ("net: add xmit recursion limit to tunnel xmit functions")
Cc: stable@vger.kernel.org
Signed-off-by: David Carlier <devnexen@gmail.com>
Link: https://patch.msgid.link/20260417055408.4667-1-devnexen@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-04-20 11:46:24 -07:00
Dexuan Cui
f631529589 hv_sock: Report EOF instead of -EIO for FIN
Commit f0c5827d07 unluckily causes a regression for the FIN packet,
and the final read syscall gets an error rather than 0.

Ideally, we would want to fix hvs_channel_readable_payload() so that it
could return 0 in the FIN scenario, but it's not good for the hv_sock
driver to use the VMBus ringbuffer's cached priv_read_index, which is
internal data in the VMBus driver.

Fix the regression in hv_sock by returning 0 rather than -EIO.

Fixes: f0c5827d07 ("hv_sock: Return the readable bytes in hvs_stream_has_data()")
Cc: stable@vger.kernel.org
Reported-by: Ben Hillis <Ben.Hillis@microsoft.com>
Reported-by: Mitchell Levy <levymitchell0@gmail.com>
Signed-off-by: Dexuan Cui <decui@microsoft.com>
Acked-by: Stefano Garzarella <sgarzare@redhat.com>
Link: https://patch.msgid.link/20260416191433.840637-1-decui@microsoft.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-04-20 11:44:43 -07:00
Linus Torvalds
d884efd340 LEDs for v7.1
* Core:
     * Implement fallback to software node name for LED names
     * Fix formatting issues in `led-core.c` reported by checkpatch.pl
     * Make `led_remove_lookup()` NULL-aware
     * Switch from `class_find_device_by_of_node()` to `class_find_device_by_fwnode()`
   * LGM SSO:
     * Fix a typo in the `GET_SRC_OFFSET` macro
   * Multicolor:
     * Fix a signedness error by changing the `intensity_value` type to `unsigned int`
   * Qualcomm LPG:
     * Prevent array overflow when selecting high-resolution values
   * TI LP8860:
     * Do not unconditionally program the EEPROM on probe
     * Hold the mutex lock for the entirety of the EEPROM programming process
 
   * Kinetic KTD2692:
     * Make the `ktd2692_timing` variable static to resolve a sparse warning
   * LGM SSO:
     * Remove a duplicate assignment of `priv->mmap` in `intel_sso_led_probe()`
   * TTY Trigger:
     * Prefer `IS_ERR_OR_NULL()` over manual NULL checks
   * TI LM3642:
     * Use `guard(mutex)` to simplify locking and avoid manual `mutex_unlock()` calls
   * TI LP5569:
     * Use `sysfs_emit()` instead of `sprintf()` for sysfs outputs
   * TI LP8860:
     * Return directly from `lp8860_init()` instead of using empty `goto` statements
     * Use a single regmap table and an access table instead of separate maps for normal and EEPROM registers
     * Remove an unused read of the `STATUS` register during EEPROM programming
 
   * Core:
     * Drop the unneeded dependency on `OF_GPIO` from `LEDS_NETXBIG` in Kconfig
 
   * Spreadtrum SC2731:
     * Add a compatible string for the SC2730 PMIC LED controller
   * TI LP5860:
     * Add the `enable-gpios` property for the `VIO_EN` pin
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEEdrbJNaO+IJqU8IdIUa+KL4f8d2EFAmnl4IMACgkQUa+KL4f8
 d2E0XA//ezp2YldF5Vf1m+5vnhVBK1HAqoT+nVzFMrsxccz4fEmZBuSXdgUPs7xi
 kxBgIPk90nAasANzxojBJJ4gU9Wss0s7VZ6dNklI8IzwmVJcU9aFhQSLP0iDmBIL
 Mguh15Svej5vKbemo40XlTCVRyNoo4ciO9MdmHyQntCOaAfECnPeojV5VlekwDX8
 uYyI5lZM3jK1+McwwJC8YglzWehKY1vGlM58KGZ+Dg5kUEjPVFh6bNTUaKdWCFee
 AxGk70Aecnf9K8O8Ynz6jzDZRm9EHM4dF7NuMH1fGTY94993AEgGBOGTLfB/bJof
 PUW4BlDlnGJwQKNI7eM3ZaahV5nkFgzE7gPX0Vd0T4OTdpqkQ6DE6mr6qknHJFzn
 WLKpMHPaS/ogFKfVsMohiKjjTrhAYBR9NzoYBxTAzYfpFjtnc8nKxHgte3NKuzp1
 pjIm4VYzCKzKetMdPg6EqvvA4nL8iI+NkKU3KzdJfzuiZHetIt4kpLQEMzl0IPRQ
 rfQNU3jTsa0sw5J7LhZYpk/pOf0u0Opx7Xr7Zygv/Gl/fCZCT70AujnvoRiLJqky
 STqVknCxfACUcoCpstW4XdBKYG4E74qU9h9lr3vYa80qPZaqOnqHKVJhfROSZHBY
 mq/R4tcDJ40B4/jlTZbokDLsLxK6kVs9PSnMmiTST+vELxf1hDc=
 =BGim
 -----END PGP SIGNATURE-----

Merge tag 'leds-next-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/leds

Pull LED updates from Lee Jones:
  Core:
   - Implement fallback to software node name for LED names
   - Fix formatting issues in `led-core.c` reported by checkpatch.pl
   - Make `led_remove_lookup()` NULL-aware
   - Switch from `class_find_device_by_of_node()` to
     `class_find_device_by_fwnode()`
   - Drop the unneeded dependency on `OF_GPIO` from `LEDS_NETXBIG`
     in Kconfig

  Kinetic KTD2692:
   - Make the `ktd2692_timing` variable static to resolve a
     sparse warning

  LGM SSO:
   - Fix a typo in the `GET_SRC_OFFSET` macro
   - Remove a duplicate assignment of `priv->mmap` in
     `intel_sso_led_probe()`

  Multicolor:
   - Fix a signedness error by changing the `intensity_value` type
     to `unsigned int`

  Qualcomm LPG:
   - Prevent array overflow when selecting high-resolution values

  Spreadtrum SC2731:
   - Add a compatible string for the SC2730 PMIC LED controller

  TI LM3642:
   - Use `guard(mutex)` to simplify locking and avoid manual
     `mutex_unlock()` calls

  TI LP5569:
   - Use `sysfs_emit()` instead of `sprintf()` for sysfs outputs

  TI LP5860:
   - Add the `enable-gpios` property for the `VIO_EN` pin"

  TI LP8860:
   - Do not unconditionally program the EEPROM on probe
   - Hold the mutex lock for the entirety of the EEPROM programming
     process
   - Return directly from `lp8860_init()` instead of using empty `goto`
     statements
   - Use a single regmap table and an access table instead of separate
     maps for normal and EEPROM registers
   - Remove an unused read of the `STATUS` register during EEPROM
     programming

  TTY Trigger:
   - Prefer `IS_ERR_OR_NULL()` over manual NULL checks"

* tag 'leds-next-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/leds:
  leds: class: Make led_remove_lookup() NULL-aware
  leds: led-class: Switch to using class_find_device_by_fwnode()
  leds: Kconfig: Drop unneeded dependency on OF_GPIO
  leds: lm3642: Use guard to simplify locking
  leds: core: Fix formatting issues
  leds: core: Implement fallback to software node name for LED names
  leds: lgm-sso: Fix typo in macro for src offset
  dt-bindings: leds: lp5860: add enable-gpio
  leds: Prefer IS_ERR_OR_NULL over manual NULL check
  dt-bindings: leds: sc2731: Add compatible for SC2730
  leds: lp8860: Do not always program EEPROM on probe
  leds: lp8860: Remove unused read of STATUS register
  leds: lp8860: Hold lock for all of EEPROM programming
  leds: lp8860: Return directly from lp8860_init
  leds: lp8860: Use a single regmap table
  leds: lgm-sso: Remove duplicate assignments for priv->mmap
  leds: qcom-lpg: Check for array overflow when selecting the high resolution
  leds: ktd2692: Make ktd2692_timing variable static
  leds: lp5569: Use sysfs_emit instead of sprintf()
  leds: multicolor: Change intensity_value to unsigned int
2026-04-20 11:43:40 -07:00