Commit Graph

1396428 Commits

Author SHA1 Message Date
Linus Torvalds
eba41c0173 io_uring-6.18-20251009
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Merge tag 'io_uring-6.18-20251009' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux

Pull io_uring fixes from Jens Axboe:

 - Fixup indentation in the UAPI header

 - Two fixes for zcrx. One fixes receiving too much in some cases, and
   the other deals with not correctly incrementing the source in the
   fallback copy loop

 - Fix for a race in the IORING_OP_WAITID command, where there was a
   small window where the request would be left on the wait_queue_head
   list even though it was being canceled/completed

 - Update liburing git URL in the kernel tree

* tag 'io_uring-6.18-20251009' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux:
  io_uring/zcrx: increment fallback loop src offset
  io_uring/zcrx: fix overshooting recv limit
  io_uring: use tab indentation for IORING_SEND_VECTORIZED comment
  io_uring/waitid: always prune wait queue entry in io_waitid_wait()
  io_uring: update liburing git URL
2025-10-10 10:25:24 -07:00
Linus Torvalds
8cc8ea228c parisc architecture updates for kernel v6.18-rc1:
Minor enhancements and fixes, specifically:
 - report emulation and alignment faults via perf
 - add initial kernel-side support for perf_events
 - small initialization fixes in the parisc firmware layer
 - adjust TC* constants and avoid referencing termio structs to avoid
   userspace build errors.
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Merge tag 'parisc-for-6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux

Pull parisc updates from Helge Deller:
 "Minor enhancements and fixes, specifically:

   - report emulation and alignment faults via perf

   - add initial kernel-side support for perf_events

   - small initialization fixes in the parisc firmware layer

   - adjust TC* constants and avoid referencing termio structs to avoid
     userspace build errors"

* tag 'parisc-for-6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
  parisc: Fix iodc and device path return values on old machines
  parisc: Firmware: Fix returned path for PDC_MODULE_FIND on older machines
  parisc: Add initial kernel-side perf_event support
  parisc: Report software alignment faults via perf
  parisc: Report emulation faults via perf
  parisc: don't reference obsolete termio struct for TC* constants
  parisc: Remove spurious if statement from raw_copy_from_user()
2025-10-10 10:01:55 -07:00
Linus Torvalds
fdfa38e95e sound fixes for 6.18-rc1
A few more small fixes for 6.18-rc1.
 Most of changes are about ASoC Intel and SOF drivers, while a few
 other device-specific fixes are found for HD-audio, USB-audio, ASoC
 RT722VB and Meson.
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Merge tag 'sound-fix-6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "A few more small fixes for 6.18-rc1.

  Most of changes are about ASoC Intel and SOF drivers, while a few
  other device-specific fixes are found for HD-audio, USB-audio, ASoC
  RT722VB and Meson"

* tag 'sound-fix-6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ASoC: rt722: add settings for rt722VB
  ASoC: meson: aiu-encoder-i2s: fix bit clock polarity
  ALSA: usb: fpc: replace kmalloc_array followed by copy_from_user with memdup_array_user
  ALSA: hda/tas2781: Enable init_profile_id for device initialization
  ALSA: emu10k1: Fix typo in docs
  ALSA: hda/realtek: Add quirk for ASUS ROG Zephyrus Duo
  ASoC: SOF: Intel: Read the LLP via the associated Link DMA channel
  ASoC: SOF: ipc4-pcm: do not report invalid delay values
  ASoC: SOF: sof-audio: add dev_dbg_ratelimited wrapper
  ASoC: SOF: Intel: hda-pcm: Place the constraint on period time instead of buffer time
  ASoC: SOF: ipc4-topology: Account for different ChainDMA host buffer size
  ASoC: SOF: ipc4-topology: Correct the minimum host DMA buffer size
  ASoC: SOF: ipc4-pcm: fix start offset calculation for chain DMA
  ASoC: SOF: ipc4-pcm: fix delay calculation when DSP resamples
  ASoC: SOF: ipc3-topology: Fix multi-core and static pipelines tear down
  ALSA: hda/hdmi: Add pin fix for HP ProDesk model
2025-10-10 09:55:19 -07:00
Linus Torvalds
06a88f4799 fbdev fixes & enhancements for 6.18-rc1:
Bug fixes:
 - Add bounds checking in bit_putcs to fix vmalloc-out-of-bounds (Albin Babu Varghese)
 - Fix logic error in "offb" name match (Finn Thain)
 - simplefb: Fix use after free in simplefb_detach_genpds() (Janne Grunau)
 - s3fb: Various fixes and powersave improvements (Zsolt Kajtar)
 
 Enhancements & code cleanups:
 - Various fixes in the documentation (Bagas Sanjaya)
 - Use string choices helpers (Chelsy Ratnawat)
 - xenfb: Use vmalloc_array to simplify code (Qianfeng Rong)
 - mb862xxfb: Use int type to store negative error codes (Qianfeng Rong)
 - Make drivers depend on LCD_CLASS_DEVICE (Thomas Zimmermann)
 - radeonfb: Remove stale product link in Kconfig (Sukrut Heroorkar)
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Merge tag 'fbdev-for-6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev

Pull fbdev updates from Helge Deller:
 "Beside the usual bunch of smaller bug fixes, the majority of changes
  were by Zsolt Kajtar to improve the s3fb driver.

  Bug fixes:
   - Bounds checking to fix vmalloc-out-of-bounds (Albin Babu Varghese)
   - Fix logic error in "offb" name match (Finn Thain)
   - simplefb: Fix use after free in (Janne Grunau)
   - s3fb: Various fixes and powersave improvements (Zsolt Kajtar)

  Enhancements & code cleanups:
   - Various fixes in the documentation (Bagas Sanjaya)
   - Use string choices helpers (Chelsy Ratnawat)
   - xenfb: Use vmalloc_array to simplify code (Qianfeng Rong)
   - mb862xxfb: use signed type for error codes (Qianfeng Rong)
   - Make drivers depend on LCD_CLASS_DEVICE (Thomas Zimmermann)
   - radeonfb: Remove stale product link in Kconfig (Sukrut Heroorkar)"

* tag 'fbdev-for-6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev:
  fbdev: Fix logic error in "offb" name match
  fbdev: Add bounds checking in bit_putcs to fix vmalloc-out-of-bounds
  fbdev: Make drivers depend on LCD_CLASS_DEVICE
  fbdev: radeonfb: Remove stale product link in Kconfig
  Documentation: fb: Retitle driver docs
  Documentation: fb: ep93xx: Demote section headings
  Documentation: fb: Split toctree
  fbdev: simplefb: Fix use after free in simplefb_detach_genpds()
  fbdev: s3fb: Revert mclk stop in suspend
  fbdev: mb862xxfb: Use int type to store negative error codes
  fbdev: Use string choices helpers
  fbdev: core: Fix ubsan warning in pixel_to_pat
  fbdev: s3fb: Implement 1 and 2 BPP modes, improve 4 BPP
  fbdev: s3fb: Implement powersave for S3 FB
  fbdev: xenfb: Use vmalloc_array to simplify code
2025-10-10 09:36:23 -07:00
Linus Torvalds
9976831f40 gpio fixes for v6.18-rc1
- add a missing ACPI ID for MTL-CVF devices in gpio-usbio
 - mark the gpio-wcd934x controller as "sleeping" as it uses a mutex for
   locking internally
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Merge tag 'gpio-fixes-for-v6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux

Pull gpio fixes from Bartosz Golaszewski:

 - add a missing ACPI ID for MTL-CVF devices in gpio-usbio

 - mark the gpio-wcd934x controller as "sleeping" as it uses a mutex for
   locking internally

* tag 'gpio-fixes-for-v6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
  gpio: wcd934x: mark the GPIO controller as sleeping
  gpio: usbio: Add ACPI device-id for MTL-CVF devices
2025-10-10 09:22:39 -07:00
Linus Torvalds
dcf50ca782 Add support for Renesas R-Car and allow arbitrary BAR mapping in EPF. Update
ntb_hw_amd to support the latest generation secondary topology and add a
 new maintainer. Fix a bug by adding a mutex to ensure `link_event_callback`
 executes sequentially.
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Merge tag 'ntb-6.18' of https://github.com/jonmason/ntb

Pull NTB updates from Jon Mason:

 - Add support for Renesas R-Car and allow arbitrary BAR mapping in EPF

 - Update ntb_hw_amd to support the latest generation secondary topology
   and add a new maintainer

 - Fix a bug by adding a mutex to ensure `link_event_callback` executes
   sequentially

* tag 'ntb-6.18' of https://github.com/jonmason/ntb:
  NTB: epf: Add Renesas rcar support
  NTB: epf: Allow arbitrary BAR mapping
  ntb: Add mutex to make link_event_callback executed linearly.
  MAINTAINERS: Update for the NTB AMD driver maintainer
  ntb_hw_amd: Update amd_ntb_get_link_status to support latest generation secondary topology
2025-10-10 09:18:19 -07:00
Linus Torvalds
aac3190332 i2c-for-6.18-rc1-part2
- Second part of rtl9300 updates since dependencies are in now
   - general cleanups, implemented block read/write support, added RTL9310 support
 - DT schema conversion of hix5hd2 binding
 - namespace cleanup for i2c-algo-pca
 - minor simplification for mt65xx
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Merge tag 'i2c-for-6.18-rc1-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux

Pull more i2c updates from Wolfram Sang:

 - Second part of rtl9300 updates since dependencies are in now:
    - general cleanups
    - implement block read/write support
    - add RTL9310 support

 - DT schema conversion of hix5hd2 binding

 - namespace cleanup for i2c-algo-pca

 - minor simplification for mt65xx

* tag 'i2c-for-6.18-rc1-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  dt-bindings: i2c: hisilicon,hix5hd2: convert to DT schema
  i2c: mt65xx: convert set_speed function to void
  i2c: rename wait_for_completion callback to wait_for_completion_cb
  i2c: rtl9300: add support for RTL9310 I2C controller
  dt-bindings: i2c: realtek,rtl9301-i2c: extend for RTL9310 support
  i2c: rtl9300: use scoped guard instead of explicit lock/unlock
  i2c: rtl9300: separate xfer configuration and execution
  i2c: rtl9300: do not set read mode on every transfer
  i2c: rtl9300: move setting SCL frequency to config_io
  i2c: rtl9300: rename internal sda_pin to sda_num
  dt-bindings: i2c: realtek,rtl9301-i2c: fix wording and typos
  i2c: rtl9300: use regmap fields and API for registers
  i2c: rtl9300: Implement I2C block read and write
2025-10-10 09:13:11 -07:00
Linus Torvalds
0ae452440c This push contains the following changes:
- Fix bug in crypto_skcipher that breaks the new ti driver.
 - Check for invalid assoclen in essiv.
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Merge tag 'v6.18-p3' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6

Pull crypto fixes from Herbert Xu:

 - Fix bug in crypto_skcipher that breaks the new ti driver

 - Check for invalid assoclen in essiv

* tag 'v6.18-p3' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  crypto: essiv - Check ssize for decryption and in-place encryption
  crypto: skcipher - Fix reqsize handling
2025-10-10 08:56:16 -07:00
Linus Torvalds
84d4e8b613 Hi,
Round #2.
 
 O_EXCL patches will be postponed to 6.19 as they need some restructuring.
 E.g., there's in-between series regression breaking the user space as lack
 of O_EXCL flag handling causes obviously unconditional O_EXCL.
 
 As per Chris' feedback, commands fail because it is based on Google's a
 non-standard proprietary TPM alike implementation. And the issue is not
 PC Client Profile specific. "typical profiles" are fine when they become
 "typical profiles".
 
 The null key can be verified with vendor certificate tied keys, and there's
 challenge-response process using them for certifying any other key by a
 remote party.
 
 Performance hit on generation aside, if really starting to cut hairs null
 keys are the most secure option, and it's a non-debatable fact: they have
 shortest expiration times as seed changes per power cycle.
 
 Based on this TCG_TPM2_HMAC is disabled from defconfig exactly for the sake
 of the performance issues.
 
 BR, Jarkko
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Merge tag 'tpmdd-next-v6.18-2' of git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd

Pull tpm updates from Jarkko Sakkinen:

 - Disable TCG_TPM2_HMAC from defconfig

   It causes performance issues, and breaks some atypical
   configurations.

 - simplify code using the new crypto library

 - misc fixes and cleanups

* tag 'tpmdd-next-v6.18-2' of git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd:
  tpm: Prevent local DOS via tpm/tpm0/ppi/*operations
  tpm: use a map for tpm2_calc_ordinal_duration()
  tpm_tis: Fix incorrect arguments in tpm_tis_probe_irq_single
  tpm: Use HMAC-SHA256 library instead of open-coded HMAC
  tpm: Compare HMAC values in constant time
  tpm: Disable TPM2_TCG_HMAC by default
2025-10-10 08:34:11 -07:00
Bartosz Golaszewski
b5f8aa8d4b gpio: wcd934x: mark the GPIO controller as sleeping
The slimbus regmap passed to the GPIO driver down from MFD does not use
fast_io. This means a mutex is used for locking and thus this GPIO chip
must not be used in atomic context. Change the can_sleep switch in
struct gpio_chip to true.

Fixes: 59c324683400 ("gpio: wcd934x: Add support to wcd934x gpio controller")
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2025-10-10 09:37:19 +02:00
Denis Aleksandrov
a29ad21b98 tpm: Prevent local DOS via tpm/tpm0/ppi/*operations
Reads on tpm/tpm0/ppi/*operations can become very long on
misconfigured systems. Reading the TPM is a blocking operation,
thus a user could effectively trigger a DOS.

Resolve this by caching the results and avoiding the blocking
operations after the first read.

[ jarkko: fixed atomic sleep:
  sed -i 's/spin_/mutex_/g' drivers/char/tpm/tpm_ppi.c
  sed -i 's/DEFINE_SPINLOCK/DEFINE_MUTEX/g' drivers/char/tpm/tpm_ppi.c ]

Signed-off-by: Denis Aleksandrov <daleksan@redhat.com>
Reported-by: Jan Stancek <jstancek@redhat.com>
Closes: https://lore.kernel.org/linux-integrity/20250915210829.6661-1-daleksan@redhat.com/T/#u
Suggested-by: Jarkko Sakkinen <jarkko@kernel.org>
Reviewed-by: Paul Menzel <pmenzel@molgen.mpg.de>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
2025-10-10 08:21:45 +03:00
Jarkko Sakkinen
207696b17f tpm: use a map for tpm2_calc_ordinal_duration()
The current shenanigans for duration calculation introduce too much
complexity for a trivial problem, and further the code is hard to patch and
maintain.

Address these issues with a flat look-up table, which is easy to understand
and patch. If leaf driver specific patching is required in future, it is
easy enough to make a copy of this table during driver initialization and
add the chip parameter back.

'chip->duration' is retained for TPM 1.x.

As the first entry for this new behavior address TCG spec update mentioned
in this issue:

https://github.com/raspberrypi/linux/issues/7054

Therefore, for TPM_SelfTest the duration is set to 3000 ms.

This does not categorize a as bug, given that this is introduced to the
spec after the feature was originally made.

Reviewed-by: Serge Hallyn <serge@hallyn.com>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
2025-10-10 08:21:45 +03:00
Gunnar Kudrjavets
8a81236f2c tpm_tis: Fix incorrect arguments in tpm_tis_probe_irq_single
The tpm_tis_write8() call specifies arguments in wrong order. Should be
(data, addr, value) not (data, value, addr). The initial correct order
was changed during the major refactoring when the code was split.

Fixes: 41a5e1cf1fe1 ("tpm/tpm_tis: Split tpm_tis driver into a core and TCG TIS compliant phy")
Signed-off-by: Gunnar Kudrjavets <gunnarku@amazon.com>
Reviewed-by: Justinien Bouron <jbouron@amazon.com>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Reviewed-by: Paul Menzel <pmenzel@molgen.mpg.de>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
2025-10-10 08:21:45 +03:00
Eric Biggers
64a7cfbcf5 tpm: Use HMAC-SHA256 library instead of open-coded HMAC
Now that there are easy-to-use HMAC-SHA256 library functions, use these
in tpm2-sessions.c instead of open-coding the HMAC algorithm.

Note that the new implementation correctly handles keys longer than 64
bytes (SHA256_BLOCK_SIZE), whereas the old implementation handled such
keys incorrectly.  But it doesn't appear that such keys were being used.

Signed-off-by: Eric Biggers <ebiggers@kernel.org>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
2025-10-10 08:21:45 +03:00
Eric Biggers
2c2615c842 tpm: Compare HMAC values in constant time
In tpm_buf_check_hmac_response(), compare the HMAC values in constant
time using crypto_memneq() instead of in variable time using memcmp().

This is worthwhile to follow best practices and to be consistent with
MAC comparisons elsewhere in the kernel.  However, in this driver the
side channel seems to have been benign: the HMAC input data is
guaranteed to always be unique, which makes the usual MAC forgery via
timing side channel not possible.  Specifically, the HMAC input data in
tpm_buf_check_hmac_response() includes the "our_nonce" field, which was
generated by the kernel earlier, remains under the control of the
kernel, and is unique for each call to tpm_buf_check_hmac_response().

Signed-off-by: Eric Biggers <ebiggers@kernel.org>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
2025-10-10 08:21:45 +03:00
Jarkko Sakkinen
4bddf4587c tpm: Disable TPM2_TCG_HMAC by default
After reading all the feedback, right now disabling the TPM2_TCG_HMAC
is the right call.

Other views discussed:

A. Having a kernel command-line parameter or refining the feature
   otherwise. This goes to the area of improvements.  E.g., one
   example is my own idea where the null key specific code would be
   replaced with a persistent handle parameter (which can be
   *unambigously* defined as part of attestation process when
   done correctly).

B. Removing the code. I don't buy this because that is same as saying
   that HMAC encryption cannot work at all (if really nitpicking) in
   any form. Also I disagree on the view that the feature could not
   be refined to something more reasoable.

Also, both A and B are worst options in terms of backporting.

Thuss, this is the best possible choice.

Cc: stable@vger.kernel.or # v6.10+
Fixes: d2add27cf2b8 ("tpm: Add NULL primary creation")
Suggested-by: Chris Fenner <cfenn@google.com>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
2025-10-10 08:21:45 +03:00
Finn Thain
15df28699b fbdev: Fix logic error in "offb" name match
A regression was reported to me recently whereby /dev/fb0 had disappeared
from a PowerBook G3 Series "Wallstreet". The problem shows up when the
"video=ofonly" parameter is passed to the kernel, which is what the
bootloader does when "no video driver" is selected. The cause of the
problem is the "offb" string comparison, which got mangled when it got
refactored. Fix it.

Cc: stable@vger.kernel.org
Fixes: 93604a5ade3a ("fbdev: Handle video= parameter in video/cmdline.c")
Reported-and-tested-by: Stan Johnson <userm57@yahoo.com>
Signed-off-by: Finn Thain <fthain@linux-m68k.org>
Signed-off-by: Helge Deller <deller@gmx.de>
2025-10-10 00:31:13 +02:00
Helge Deller
f4edb5c52c parisc: Fix iodc and device path return values on old machines
Older machines may not fully initialize the return values when asking for IODC
and device path data when building the inventory.  Work around possible
firmware leaks by proper initialization of the variables.

Signed-off-by: Helge Deller <deller@gmx.de>
2025-10-09 23:45:04 +02:00
Helge Deller
44ac7f5c6d parisc: Firmware: Fix returned path for PDC_MODULE_FIND on older machines
Older machines (like my 715/64) don't correctly initialize the
device path when returning from the PDC_MODULE_FIND firmware call.
Work around that shortcoming by initializing the path with the
known values.

Signed-off-by: Helge Deller <deller@gmx.de>
2025-10-09 23:45:04 +02:00
Linus Torvalds
5472d60c12 tracing clean up and fixes for v6.18:
- Have osnoise tracer use memdup_user_nul()
 
   The function osnoise_cpus_write() open codes a kmalloc() and then
   a copy_from_user() and then adds a nul byte at the end which is the
   same as simply using memdup_user_nul().
 
 - Fix wakeup and irq tracers when failing to acquire calltime
 
   When the wakeup and irq tracers use the function graph tracer for
   tracing function times, it saves a timestamp into the fgraph shadow
   stack. It is possible that this could fail to be stored. If that
   happens, it exits the routine early. These functions also disable
   nesting of the operations by incremeting the data "disable" counter.
   But if the calltime exits out early, it never increments the counter
   back to what it needs to be.
 
   Since there's only a couple of lines of code that does work after
   acquiring the calltime, instead of exiting out early, reverse the
   if statement to be true if calltime is acquired, and place the code
   that is to be done within that if block. The clean up will always
   be done after that.
 
 - Fix ring_buffer_map() return value on failure of __rb_map_vma()
 
   If __rb_map_vma() fails in ring_buffer_map(), it does not return
   an error. This means the caller will be working against a bad vma
   mapping. Have ring_buffer_map() return an error when __rb_map_vma()
   fails.
 
 - Fix regression of writing to the trace_marker file
 
   A bug fix was made to change __copy_from_user_inatomic() to
   copy_from_user_nofault() in the trace_marker write function.
   The trace_marker file is used by applications to write into
   it (usually with a file descriptor opened at the start of the
   program) to record into the tracing system. It's usually used
   in critical sections so the write to trace_marker is highly
   optimized.
 
   The reason for copying in an atomic section is that the write
   reserves space on the ring buffer and then writes directly into
   it. After it writes, it commits the event. The time between
   reserve and commit must have preemption disabled.
 
   The trace marker write does not have any locking nor can it
   allocate due to the nature of it being a critical path.
 
   Unfortunately, converting __copy_from_user_inatomic() to
   copy_from_user_nofault() caused a regression in Android.
   Now all the writes from its applications trigger the fault that
   is rejected by the _nofault() version that wasn't rejected by
   the _inatomic() version. Instead of getting data, it now just
   gets a trace buffer filled with:
 
     tracing_mark_write: <faulted>
 
   To fix this, on opening of the trace_marker file, allocate
   per CPU buffers that can be used by the write call. Then
   when entering the write call, do the following:
 
     preempt_disable();
     cpu = smp_processor_id();
     buffer = per_cpu_ptr(cpu_buffers, cpu);
     do {
 	cnt = nr_context_switches_cpu(cpu);
 	migrate_disable();
 	preempt_enable();
 	ret = copy_from_user(buffer, ptr, size);
 	preempt_disable();
 	migrate_enable();
     } while (!ret && cnt != nr_context_switches_cpu(cpu));
     if (!ret)
 	ring_buffer_write(buffer);
     preempt_enable();
 
   This works similarly to seqcount. As it must enabled preemption
   to do a copy_from_user() into a per CPU buffer, if it gets
   preempted, the buffer could be corrupted by another task.
   To handle this, read the number of context switches of the current
   CPU, disable migration, enable preemption, copy the data from
   user space, then immediately disable preemption again.
   If the number of context switches is the same, the buffer
   is still valid. Otherwise it must be assumed that the buffer may
   have been corrupted and it needs to try again.
 
   Now the trace_marker write can get the user data even if it has
   to fault it in, and still not grab any locks of its own.
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Merge tag 'trace-v6.18-2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace

Pull tracing clean up and fixes from Steven Rostedt:

 - Have osnoise tracer use memdup_user_nul()

   The function osnoise_cpus_write() open codes a kmalloc() and then a
   copy_from_user() and then adds a nul byte at the end which is the
   same as simply using memdup_user_nul().

 - Fix wakeup and irq tracers when failing to acquire calltime

   When the wakeup and irq tracers use the function graph tracer for
   tracing function times, it saves a timestamp into the fgraph shadow
   stack. It is possible that this could fail to be stored. If that
   happens, it exits the routine early. These functions also disable
   nesting of the operations by incremeting the data "disable" counter.
   But if the calltime exits out early, it never increments the counter
   back to what it needs to be.

   Since there's only a couple of lines of code that does work after
   acquiring the calltime, instead of exiting out early, reverse the if
   statement to be true if calltime is acquired, and place the code that
   is to be done within that if block. The clean up will always be done
   after that.

 - Fix ring_buffer_map() return value on failure of __rb_map_vma()

   If __rb_map_vma() fails in ring_buffer_map(), it does not return an
   error. This means the caller will be working against a bad vma
   mapping. Have ring_buffer_map() return an error when __rb_map_vma()
   fails.

 - Fix regression of writing to the trace_marker file

   A bug fix was made to change __copy_from_user_inatomic() to
   copy_from_user_nofault() in the trace_marker write function. The
   trace_marker file is used by applications to write into it (usually
   with a file descriptor opened at the start of the program) to record
   into the tracing system. It's usually used in critical sections so
   the write to trace_marker is highly optimized.

   The reason for copying in an atomic section is that the write
   reserves space on the ring buffer and then writes directly into it.
   After it writes, it commits the event. The time between reserve and
   commit must have preemption disabled.

   The trace marker write does not have any locking nor can it allocate
   due to the nature of it being a critical path.

   Unfortunately, converting __copy_from_user_inatomic() to
   copy_from_user_nofault() caused a regression in Android. Now all the
   writes from its applications trigger the fault that is rejected by
   the _nofault() version that wasn't rejected by the _inatomic()
   version. Instead of getting data, it now just gets a trace buffer
   filled with:

     tracing_mark_write: <faulted>

   To fix this, on opening of the trace_marker file, allocate per CPU
   buffers that can be used by the write call. Then when entering the
   write call, do the following:

     preempt_disable();
     cpu = smp_processor_id();
     buffer = per_cpu_ptr(cpu_buffers, cpu);
     do {
 	cnt = nr_context_switches_cpu(cpu);
 	migrate_disable();
 	preempt_enable();
 	ret = copy_from_user(buffer, ptr, size);
 	preempt_disable();
 	migrate_enable();
     } while (!ret && cnt != nr_context_switches_cpu(cpu));
     if (!ret)
 	ring_buffer_write(buffer);
     preempt_enable();

   This works similarly to seqcount. As it must enabled preemption to do
   a copy_from_user() into a per CPU buffer, if it gets preempted, the
   buffer could be corrupted by another task.

   To handle this, read the number of context switches of the current
   CPU, disable migration, enable preemption, copy the data from user
   space, then immediately disable preemption again. If the number of
   context switches is the same, the buffer is still valid. Otherwise it
   must be assumed that the buffer may have been corrupted and it needs
   to try again.

   Now the trace_marker write can get the user data even if it has to
   fault it in, and still not grab any locks of its own.

* tag 'trace-v6.18-2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
  tracing: Have trace_marker use per-cpu data to read user space
  ring buffer: Propagate __rb_map_vma return value to caller
  tracing: Fix irqoff tracers on failure of acquiring calltime
  tracing: Fix wakeup tracers on failure of acquiring calltime
  tracing/osnoise: Replace kmalloc + copy_from_user with memdup_user_nul
2025-10-09 12:18:22 -07:00
Linus Torvalds
80b7065ec1 Bunch of unrelated fixes
- polling fix for trans fd that ought to have been fixed otherwise back
 in March, but apparently came back somewhere else...
 - USB transport buffer overflow fix
 - Some dentry lifetime rework to handle metadata update for currently
 opened files in uncached mode, or inode type change in cached mode
 - a double-put on invalid flush found by syzbot
 - and finally /sys/fs/9p/caches not advancing buffer and overwriting
 itself for large contents
 
 Thanks to everyone involved!
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Merge tag '9p-for-6.18-rc1' of https://github.com/martinetd/linux

Pull 9p updates from Dominique Martinet:
 "A bunch of unrelated fixes:

   - polling fix for trans fd that ought to have been fixed otherwise
     back in March, but apparently came back somewhere else...

   - USB transport buffer overflow fix

   - Some dentry lifetime rework to handle metadata update for currently
     opened files in uncached mode, or inode type change in cached mode

   - a double-put on invalid flush found by syzbot

   - and finally /sys/fs/9p/caches not advancing buffer and overwriting
     itself for large contents

  Thanks to everyone involved!"

* tag '9p-for-6.18-rc1' of https://github.com/martinetd/linux:
  9p: sysfs_init: don't hardcode error to ENOMEM
  9p: fix /sys/fs/9p/caches overwriting itself
  9p: clean up comment typos
  9p/trans_fd: p9_fd_request: kick rx thread if EPOLLIN
  net/9p: fix double req put in p9_fd_cancelled
  net/9p: Fix buffer overflow in USB transport layer
  fs/9p: Add p9_debug(VFS) in d_revalidate
  fs/9p: Invalidate dentry if inode type change detected in cached mode
  fs/9p: Refresh metadata in d_revalidate for uncached mode too
2025-10-09 11:56:59 -07:00
Linus Torvalds
18a7e218cf Including fixes from netfilter.
Current release - regressions:
 
   - mlx5: fix pre-2.40 binutils assembler error
 
 Current release - new code bugs:
 
   - net: psp: don't assume reply skbs will have a socket
 
   - eth: fbnic: fix missing programming of the default descriptor
 
 Previous releases - regressions:
 
   - page_pool: fix PP_MAGIC_MASK to avoid crashing on some 32-bit arches
 
   - tcp:
     - take care of zero tp->window_clamp in tcp_set_rcvlowat()
     - don't call reqsk_fastopen_remove() in tcp_conn_request().
 
   - eth: ice: release xa entry on adapter allocation failure
 
   - eth: usb: asix: hold PM usage ref to avoid PM/MDIO + RTNL deadlock
 
 Previous releases - always broken:
 
   - netfilter: validate objref and objrefmap expressions
 
   - sctp: fix a null dereference in sctp_disposition sctp_sf_do_5_1D_ce()
 
   - eth: mlx4: prevent potential use after free in mlx4_en_do_uc_filter()
 
   - eth: mlx5: prevent tunnel mode conflicts between FDB and NIC IPsec tables
 
   - eth: ocelot: fix use-after-free caused by cyclic delayed work
 
 Misc:
 
   -  add support for MediaTek PCIe 5G HP DRMR-H01
 
 Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Merge tag 'net-6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Pull  networking fixes from Paolo Abeni:
 "Including fixes from netfilter.

  Current release - regressions:

   - mlx5: fix pre-2.40 binutils assembler error

  Current release - new code bugs:

   - net: psp: don't assume reply skbs will have a socket

   - eth: fbnic: fix missing programming of the default descriptor

  Previous releases - regressions:

   - page_pool: fix PP_MAGIC_MASK to avoid crashing on some 32-bit arches

   - tcp:
       - take care of zero tp->window_clamp in tcp_set_rcvlowat()
       - don't call reqsk_fastopen_remove() in tcp_conn_request()

   - eth:
       - ice: release xa entry on adapter allocation failure
       - usb: asix: hold PM usage ref to avoid PM/MDIO + RTNL deadlock

  Previous releases - always broken:

   - netfilter: validate objref and objrefmap expressions

   - sctp: fix a null dereference in sctp_disposition sctp_sf_do_5_1D_ce()

   - eth:
       - mlx4: prevent potential use after free in mlx4_en_do_uc_filter()
       - mlx5: prevent tunnel mode conflicts between FDB and NIC IPsec tables
       - ocelot: fix use-after-free caused by cyclic delayed work

  Misc:

   -  add support for MediaTek PCIe 5G HP DRMR-H01"

* tag 'net-6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (38 commits)
  net: airoha: Fix loopback mode configuration for GDM2 port
  selftests: drv-net: pp_alloc_fail: add necessary optoins to config
  selftests: drv-net: pp_alloc_fail: lower traffic expectations
  selftests: drv-net: fix linter warnings in pp_alloc_fail
  eth: fbnic: fix reporting of alloc_failed qstats
  selftests: drv-net: xdp: add test for interface level qstats
  selftests: drv-net: xdp: rename netnl to ethnl
  eth: fbnic: fix saving stats from XDP_TX rings on close
  eth: fbnic: fix accounting of XDP packets
  eth: fbnic: fix missing programming of the default descriptor
  selftests: netfilter: query conntrack state to check for port clash resolution
  selftests: netfilter: nft_fib.sh: fix spurious test failures
  bridge: br_vlan_fill_forward_path_pvid: use br_vlan_group_rcu()
  netfilter: nft_objref: validate objref and objrefmap expressions
  net: pse-pd: tps23881: Fix current measurement scaling
  net/mlx5: fix pre-2.40 binutils assembler error
  net/mlx5e: Do not fail PSP init on missing caps
  net/mlx5e: Prevent tunnel reformat when tunnel mode not allowed
  net/mlx5: Prevent tunnel mode conflicts between FDB and NIC IPsec tables
  net: usb: asix: hold PM usage ref to avoid PM/MDIO + RTNL deadlock
  ...
2025-10-09 11:13:08 -07:00
Linus Torvalds
9361cace0d more s390 updates for 6.18 merge window
- Compile the decompressor with -Wno-pointer-sign flag to avoid
   a clang warning
 
 - Fix incomplete conversion to flag output macros in __xsch(),
   to avoid always zero return value instead of the expected
   condition code
 
 - Remove superfluous newlines from inline assemblies to improve
   compiler inlining decisions
 
 - Expose firmware provided UID Checking state in sysfs regardless
   of the device presence or state
 
 - CIO does not unregister subchannels when the attached device is
   invalid or unavailable. Update the purge function to remove I/O
   subchannels if the device number is found on cio_ignore list
 
 - Consolidate PAI crypto allocation and cleanup paths
 
 - The uv_get_secret_metadata() function has been removed some few
   months ago, remove also the function mention it in a comment
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Merge tag 's390-6.18-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

Pull more s390 updates from Alexander Gordeev:

 - Compile the decompressor with -Wno-pointer-sign flag to avoid a clang
   warning

 - Fix incomplete conversion to flag output macros in __xsch(), to avoid
   always zero return value instead of the expected condition code

 - Remove superfluous newlines from inline assemblies to improve
   compiler inlining decisions

 - Expose firmware provided UID Checking state in sysfs regardless of
   the device presence or state

 - CIO does not unregister subchannels when the attached device is
   invalid or unavailable. Update the purge function to remove I/O
   subchannels if the device number is found on cio_ignore list

 - Consolidate PAI crypto allocation and cleanup paths

 - The uv_get_secret_metadata() function has been removed some few
   months ago, remove also the function mention it in a comment

* tag 's390-6.18-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390/uv: Fix comment of uv_find_secret() function
  s390/pai_crypto: Consolidate PAI crypto allocation and cleanup paths
  s390/cio: Update purge function to unregister the unused subchannels
  s390/pci: Expose firmware provided UID Checking state in sysfs
  s390: Remove superfluous newlines from inline assemblies
  s390/cio/ioasm: Fix __xsch() condition code handling
  s390: Add -Wno-pointer-sign to KBUILD_CFLAGS_DECOMPRESSOR
2025-10-09 10:51:43 -07:00
Linus Torvalds
f6db358dea slab fixes for 6.18-rc1
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Merge tag 'slab-for-6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab

Pull slab fixes from Vlastimil Babka:

 - Fixes for several corner cases in error paths and debugging options,
   related to the new kmalloc_nolock() functionality (Kuniyuki Iwashima,
   Ran Xiaokai)

* tag 'slab-for-6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab:
  slub: Don't call lockdep_unregister_key() for immature kmem_cache.
  slab: Fix using this_cpu_ptr() in preemptible context
  slab: Add allow_spin check to eliminate kmemleak warnings
2025-10-09 10:33:50 -07:00
Kael D'Alcamo
eb4faf6343 dt-bindings: i2c: hisilicon,hix5hd2: convert to DT schema
Convert the Devicetree binding documentation for hisilicon,hix5hd2-i2c
from plain text to DT binding schema.

Signed-off-by: Kael D'Alcamo <dev@kael-k.io>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
2025-10-09 13:20:57 +02:00
Hans de Goede
434689e971 gpio: usbio: Add ACPI device-id for MTL-CVF devices
Add "INTC10D1" ACPI device-id for MTL-CVF devices, like the Dell Latitude
7450.

Closes: https://bugzilla.redhat.com/show_bug.cgi?id=2368506
Signed-off-by: Hans de Goede <hansg@kernel.org>
Acked-by: Israel Cepeda <israel.a.cepeda.lopez@intel.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2025-10-09 12:11:29 +02:00
Lorenzo Bianconi
fea8cdf673 net: airoha: Fix loopback mode configuration for GDM2 port
Add missing configuration for loopback mode in airhoha_set_gdm2_loopback
routine.

Fixes: 9cd451d414f6e ("net: airoha: Add loopback support for GDM2")
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Link: https://patch.msgid.link/20251008-airoha-loopback-mode-fix-v2-1-045694fe7f60@kernel.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-10-09 11:48:17 +02:00
Paolo Abeni
e6cc7ac0d4 Merge branch 'eth-fbnic-fix-xdp_tx-and-xdp-vs-qstats'
Jakub Kicinski says:

====================
eth: fbnic: fix XDP_TX and XDP vs qstats

Fix XDP_TX hangs and adjust the XDP statistics to match the definition
of qstats. The three problems are somewhat distinct.

XDP_TX hangs is a simple coding bug (patch 1).

The accounting of XDP packets is all over the place. Fix it to obey
qstat rules (packets seen by XDP always counted as Rx packets).
Patch 2 fixes the basic accounting, patch 3 touches up saving
the stats when rings are freed.

Patch 6 corrects reporting of alloc_fail stats which prevented
the pp_alloc_fail test from passing.

Patches 4, 5, 7, 8, 9 add or fix related test cases.

v2:
 - [patch 2] remove now unnecessary byte adjustment
 - [patch 8] use seen_fails more
v1: https://lore.kernel.org/20251003233025.1157158-1-kuba@kernel.org

Testing on fbnic below:

 $ ./tools/testing/selftests/drivers/net/hw/pp_alloc_fail.py
 TAP version 13
 1..1
 fbnic-err: bad MMIO read address 0x80074
 fbnic-err: bad MMIO read address 0x80074
 # Seen: pkts:20605 fails:40 (pass thrs:12)
 # ethtool -G change retval: success
 ok 1 pp_alloc_fail.test_pp_alloc
 # Totals: pass:1 fail:0 xfail:0 xpass:0 skip:0 error:0

 $ ./tools/testing/selftests/drivers/net/xdp.py
 TAP version 13
 1..13
 ok 1 xdp.test_xdp_native_pass_sb
 ok 2 xdp.test_xdp_native_pass_mb
 ok 3 xdp.test_xdp_native_drop_sb
 ok 4 xdp.test_xdp_native_drop_mb
 ok 5 xdp.test_xdp_native_tx_sb
 ok 6 xdp.test_xdp_native_tx_mb
 # Failed run: pkt_sz 2048, offset 1. Last successful run: pkt_sz 1024, offset 256. Reason: Adjustment failed
 ok 7 xdp.test_xdp_native_adjst_tail_grow_data
 ok 8 xdp.test_xdp_native_adjst_tail_shrnk_data
 # Failed run: pkt_sz 512, offset -256. Last successful run: pkt_sz 512, offset -128. Reason: Adjustment failed
 ok 9 xdp.test_xdp_native_adjst_head_grow_data
 # Failed run: pkt_sz (2048) > HDS threshold (1536) and offset 64 > 48
 ok 10 xdp.test_xdp_native_adjst_head_shrnk_data
 ok 11 xdp.test_xdp_native_qstats_pass
 ok 12 xdp.test_xdp_native_qstats_drop
 ok 13 xdp.test_xdp_native_qstats_tx
 # Totals: pass:13 fail:0 xfail:0 xpass:0 skip:0 error:0
====================

Link: https://patch.msgid.link/20251007232653.2099376-1-kuba@kernel.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-10-09 11:10:04 +02:00
Jakub Kicinski
5d683e5505 selftests: drv-net: pp_alloc_fail: add necessary optoins to config
Add kernel config for error injection as needed by pp_alloc_fail.py

Reviewed-by: Simon Horman <horms@kernel.org>
Fixes: 9da271f825e4 ("selftests: drv-net-hw: add test for memory allocation failures with page pool")
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Link: https://patch.msgid.link/20251007232653.2099376-10-kuba@kernel.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-10-09 11:10:02 +02:00
Jakub Kicinski
fbb467f0ed selftests: drv-net: pp_alloc_fail: lower traffic expectations
Lower the expected level of traffic in the pp_alloc_fail test
and calculate failure counter thresholds based on the traffic
rather than using a fixed constant.

We only have "QEMU HW" in NIPA right now, and the test (due to
debug dependencies) only works on debug kernels in the first place.
We need some place for it to pass otherwise it seems to be bit
rotting. So lower the traffic threshold so that it passes on QEMU
and with a debug kernel...

Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Link: https://patch.msgid.link/20251007232653.2099376-9-kuba@kernel.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-10-09 11:10:02 +02:00
Jakub Kicinski
0be740fb22 selftests: drv-net: fix linter warnings in pp_alloc_fail
Fix linter warnings, it's a bit hard to check for new ones otherwise.

  W0311: Bad indentation. Found 16 spaces, expected 12 (bad-indentation)
  C0114: Missing module docstring (missing-module-docstring)
  W1514: Using open without explicitly specifying an encoding (unspecified-encoding)
  C0116: Missing function or method docstring (missing-function-docstring)

Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Link: https://patch.msgid.link/20251007232653.2099376-8-kuba@kernel.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-10-09 11:10:02 +02:00
Jakub Kicinski
2eecd3a41e eth: fbnic: fix reporting of alloc_failed qstats
Rx processing under normal circumstances has 3 rings - 2 buffer
rings (heads, payloads) and a completion ring. All the rings
have a struct fbnic_ring. Make sure we expose alloc_failed
counter from the buffer rings, previously only the alloc_failed
from the completion ring was reported, even tho all ring types
may increment this counter (buffer rings in __fbnic_fill_bdq()).

This makes the pp_alloc_fail.py test pass, it expects the qstat
to be incrementing as page pool injections happen.

Reviewed-by: Simon Horman <horms@kernel.org>
Fixes: 67dc4eb5fc92 ("eth: fbnic: report software Rx queue stats")
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Link: https://patch.msgid.link/20251007232653.2099376-7-kuba@kernel.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-10-09 11:10:02 +02:00
Jakub Kicinski
27ba92560b selftests: drv-net: xdp: add test for interface level qstats
Send a non-trivial number of packets and make sure that they
are counted correctly in qstats. Per qstats specification
XDP is the first layer of the stack so we should see Rx and Tx
counters go up for packets which went thru XDP.

Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Link: https://patch.msgid.link/20251007232653.2099376-6-kuba@kernel.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-10-09 11:10:02 +02:00
Jakub Kicinski
1ad3f62089 selftests: drv-net: xdp: rename netnl to ethnl
Test uses "netnl" for the ethtool family which is quite confusing
(one would expect netdev family would use this name).

No functional changes.

Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Link: https://patch.msgid.link/20251007232653.2099376-5-kuba@kernel.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-10-09 11:10:02 +02:00
Jakub Kicinski
858b78b24a eth: fbnic: fix saving stats from XDP_TX rings on close
When rings are freed - stats get added to the device level stat
structs. Save the stats from the XDP_TX ring just as Tx stats.
Previously they would be saved to Rx and Tx stats. So we'd not
see XDP_TX packets as Rx during runtime but after an down/up cycle
the packets would appear in stats.

Correct the helper used by ethtool code which does a runtime
config switch.

Reviewed-by: Simon Horman <horms@kernel.org>
Fixes: 5213ff086344 ("eth: fbnic: Collect packet statistics for XDP")
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Link: https://patch.msgid.link/20251007232653.2099376-4-kuba@kernel.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-10-09 11:10:02 +02:00
Jakub Kicinski
613e9e8dcb eth: fbnic: fix accounting of XDP packets
Make XDP-handled packets appear in the Rx stats. The driver has been
counting XDP_TX packets on the Tx ring, but there wasn't much accounting
on the Rx side (the Rx bytes appear to be incremented on XDP_TX but
XDP_DROP / XDP_ABORT are only counted as Rx drops).

Counting XDP_TX packets (not just bytes) in Rx stats looks like
a simple bug of omission.

The XDP_DROP handling appears to be intentional. Whether XDP_DROP
packets should be counted in interface-level Rx stats is a bit
unclear historically. When we were defining qstats, however,
we clarified based on operational experience that in this context:

  name: rx-packets
  doc: |
    Number of wire packets successfully received and passed to the stack.
    For drivers supporting XDP, XDP is considered the first layer
    of the stack, so packets consumed by XDP are still counted here.

fbnic does not obey this requirement. Since XDP support has been added
in current release cycle, instead of splitting interface and qstat
handling - make them both follow the qstat definition.

Another small tweak here is that we count bytes as received on the wire
rather than post-XDP bytes (xdp_get_buff_len() vs skb->len).

Reviewed-by: Simon Horman <horms@kernel.org>
Fixes: 5213ff086344 ("eth: fbnic: Collect packet statistics for XDP")
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Link: https://patch.msgid.link/20251007232653.2099376-3-kuba@kernel.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-10-09 11:10:02 +02:00
Jakub Kicinski
7e617d57f2 eth: fbnic: fix missing programming of the default descriptor
XDP_TX typically uses no offloads. To optimize XDP we added a "default
descriptor" feature to the chip, which allows us to send XDP frames with
just the buffer descriptors (DMA address + length). All the metadata
descriptors are derived from the queue config.

Commit under Fixes missed adding setting the defaults up when transplanting
the code from the prototype driver. Importantly after reset the "request
completion" bit is not set. Packets still get sent but there's no
completion, so ring is not cleaned up. We can send one ring's worth
of packets and then will start dropping all frames that got the XDP_TX
action from the XDP prog.

Reviewed-by: Simon Horman <horms@kernel.org>
Fixes: 168deb7b31b2 ("eth: fbnic: Add support for XDP_TX action")
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Link: https://patch.msgid.link/20251007232653.2099376-2-kuba@kernel.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-10-09 11:10:01 +02:00
Paolo Abeni
2854378a00 netfilter pull request nf-25-10-08
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Merge tag 'nf-25-10-08' of https://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf

Florian Westphal says:

====================
netfilter: updates for net

The following patchset contains Netfilter fixes for *net*:

1) Fix crash (call recursion) when nftables synproxy extension is used
   in an object map.  When this feature was added in v5.4 the required
   hook call validation was forgotten.
   Fix from Fernando Fernandez Mancera.
2) bridge br_vlan_fill_forward_path_pvid uses incorrect
   rcu_dereference_protected(); we only have rcu read lock but not
   RTNL.  Fix from Eric Woudstra.

Last two patches address flakes in two existing selftests.

netfilter pull request nf-25-10-08

* tag 'nf-25-10-08' of https://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf:
  selftests: netfilter: query conntrack state to check for port clash resolution
  selftests: netfilter: nft_fib.sh: fix spurious test failures
  bridge: br_vlan_fill_forward_path_pvid: use br_vlan_group_rcu()
  netfilter: nft_objref: validate objref and objrefmap expressions
====================

Link: https://patch.msgid.link/20251008125942.25056-1-fw@strlen.de
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-10-09 10:07:45 +02:00
Herbert Xu
6bb73db694 crypto: essiv - Check ssize for decryption and in-place encryption
Move the ssize check to the start in essiv_aead_crypt so that
it's also checked for decryption and in-place encryption.

Reported-by: Muhammad Alifa Ramdhan <ramdhan@starlabs.sg>
Fixes: be1eb7f78aa8 ("crypto: essiv - create wrapper template for ESSIV generation")
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2025-10-09 15:02:35 +08:00
Linus Torvalds
ec714e371f perf tools improvements and fixes for Linux v6.18:
- Extended 'perf annotate' with DWARF type information (--code-with-type)
   integration in the TUI, including a 'T' hotkey to toggle it.
 
 - Enhanced 'perf bench mem' with new mmap() workloads and control over
   page/chunk sizes.
 
 - Fix 'perf stat' error handling to correctly display unsupported events.
 
 - Improved support for Clang cross-compilation.
 
 - Refactored LLVM and Capstone disasm for modularity.
 
 - Introduced the :X modifier to exclude an event from automatic regrouping.
 
 - Adjusted KVM sampling defaults to use the "cycles" event to prevent failures.
 
 - Added comprehensive support for decoding PowerPC Dispatch Trace Log (DTL).
 
 - Updated Arm SPE tracing logic for better analysis of memory and snoop
   details.
 
 - Synchronized Intel PMU events and metrics with TMA 5.1 across multiple
   processor generations.
 
 - Converted dependencies like libperl and libtracefs to be opt-in.
 
 - Handle more Rust symbols in kallsyms ('N', debugging).
 
 - Improve the python binding to allow for python based tools to use more
   of the libraries, add a 'ilist' utility to test those new bindings.
 
 - Various 'perf test' fixes.
 
 - Kan Liang no longer a perf tools reviewer.
 
 Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Merge tag 'perf-tools-for-v6.18-1-2025-10-08' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools

Pull perf tools updates from Arnaldo Carvalho de Melo:

 - Extended 'perf annotate' with DWARF type information
   (--code-with-type) integration in the TUI, including a 'T'
   hotkey to toggle it

 - Enhanced 'perf bench mem' with new mmap() workloads and control
   over page/chunk sizes

 - Fix 'perf stat' error handling to correctly display unsupported
   events

 - Improved support for Clang cross-compilation

 - Refactored LLVM and Capstone disasm for modularity

 - Introduced the :X modifier to exclude an event from automatic
   regrouping

 - Adjusted KVM sampling defaults to use the "cycles" event to prevent
   failures

 - Added comprehensive support for decoding PowerPC Dispatch Trace Log
   (DTL)

 - Updated Arm SPE tracing logic for better analysis of memory and snoop
   details

 - Synchronized Intel PMU events and metrics with TMA 5.1 across
   multiple processor generations

 - Converted dependencies like libperl and libtracefs to be opt-in

 - Handle more Rust symbols in kallsyms ('N', debugging)

 - Improve the python binding to allow for python based tools to use
   more of the libraries, add a 'ilist' utility to test those new
   bindings

 - Various 'perf test' fixes

 - Kan Liang no longer a perf tools reviewer

* tag 'perf-tools-for-v6.18-1-2025-10-08' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools: (192 commits)
  perf tools: Fix arm64 libjvmti build by generating unistd_64.h
  perf tests: Don't retest sections in "Object code reading"
  perf docs: Document building with Clang
  perf build: Support build with clang
  perf test coresight: Dismiss clang warning for unroll loop thread
  perf test coresight: Dismiss clang warning for thread loop
  perf test coresight: Dismiss clang warning for memcpy thread
  perf build: Disable thread safety analysis for perl header
  perf build: Correct CROSS_ARCH for clang
  perf python: split Clang options when invoking Popen
  tools build: Align warning options with perf
  perf disasm: Remove unused evsel from 'struct annotate_args'
  perf srcline: Fallback between addr2line implementations
  perf disasm: Make ins__scnprintf() and ins__is_nop() static
  perf dso: Clean up read_symbol() error handling
  perf dso: Support BPF programs in dso__read_symbol()
  perf dso: Move read_symbol() from llvm/capstone to dso
  perf llvm: Reduce LLVM initialization
  perf check: Add libLLVM feature
  perf parse-events: Fix parsing of >30kb event strings
  ...
2025-10-08 19:24:24 -07:00
Linus Torvalds
37bfdbc11b pci-v6.18-fixes-1
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Merge tag 'pci-v6.18-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci

Pull pci fix from Bjorn Helgaas:

 - Fix a resource lookup regression that broke enumeration of hotplugged
   Thunderbolt devices on several platforms (Yangyu Chen)

* tag 'pci-v6.18-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci:
  PCI: Fix regression in pci_bus_distribute_available_resources()
2025-10-08 18:51:00 -07:00
Steven Rostedt
64cf7d058a tracing: Have trace_marker use per-cpu data to read user space
It was reported that using __copy_from_user_inatomic() can actually
schedule. Which is bad when preemption is disabled. Even though there's
logic to check in_atomic() is set, but this is a nop when the kernel is
configured with PREEMPT_NONE. This is due to page faulting and the code
could schedule with preemption disabled.

Link: https://lore.kernel.org/all/20250819105152.2766363-1-luogengkun@huaweicloud.com/

The solution was to change the __copy_from_user_inatomic() to
copy_from_user_nofault(). But then it was reported that this caused a
regression in Android. There's several applications writing into
trace_marker() in Android, but now instead of showing the expected data,
it is showing:

  tracing_mark_write: <faulted>

After reverting the conversion to copy_from_user_nofault(), Android was
able to get the data again.

Writes to the trace_marker is a way to efficiently and quickly enter data
into the Linux tracing buffer. It takes no locks and was designed to be as
non-intrusive as possible. This means it cannot allocate memory, and must
use pre-allocated data.

A method that is actively being worked on to have faultable system call
tracepoints read user space data is to allocate per CPU buffers, and use
them in the callback. The method uses a technique similar to seqcount.
That is something like this:

	preempt_disable();
	cpu = smp_processor_id();
	buffer = this_cpu_ptr(&pre_allocated_cpu_buffers, cpu);
	do {
		cnt = nr_context_switches_cpu(cpu);
		migrate_disable();
		preempt_enable();
		ret = copy_from_user(buffer, ptr, size);
		preempt_disable();
		migrate_enable();
	} while (!ret && cnt != nr_context_switches_cpu(cpu));

	if (!ret)
		ring_buffer_write(buffer);
	preempt_enable();

It's a little more involved than that, but the above is the basic logic.
The idea is to acquire the current CPU buffer, disable migration, and then
enable preemption. At this moment, it can safely use copy_from_user().
After reading the data from user space, it disables preemption again. It
then checks to see if there was any new scheduling on this CPU. If there
was, it must assume that the buffer was corrupted by another task. If
there wasn't, then the buffer is still valid as only tasks in preemptable
context can write to this buffer and only those that are running on the
CPU.

By using this method, where trace_marker open allocates the per CPU
buffers, trace_marker writes can access user space and even fault it in,
without having to allocate or take any locks of its own.

Cc: stable@vger.kernel.org
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Luo Gengkun <luogengkun@huaweicloud.com>
Cc: Wattson CI <wattson-external@google.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: https://lore.kernel.org/20251008124510.6dba541a@gandalf.local.home
Fixes: 3d62ab32df065 ("tracing: Fix tracing_marker may trigger page fault during preempt_disable")
Reported-by: Runping Lai <runpinglai@google.com>
Tested-by: Runping Lai <runpinglai@google.com>
Closes: https://lore.kernel.org/linux-trace-kernel/20251007003417.3470979-2-runpinglai@google.com/
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
2025-10-08 21:50:01 -04:00
Ankit Khushwaha
de4cbd7047 ring buffer: Propagate __rb_map_vma return value to caller
The return value from `__rb_map_vma()`, which rejects writable or
executable mappings (VM_WRITE, VM_EXEC, or !VM_MAYSHARE), was being
ignored. As a result the caller of `__rb_map_vma` always returned 0
even when the mapping had actually failed, allowing it to proceed
with an invalid VMA.

Cc: stable@vger.kernel.org
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Link: https://lore.kernel.org/20251008172516.20697-1-ankitkhushwaha.linux@gmail.com
Fixes: 117c39200d9d7 ("ring-buffer: Introducing ring-buffer mapping functions")
Reported-by: syzbot+ddc001b92c083dbf2b97@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?id=194151be8eaebd826005329b2e123aecae714bdb
Signed-off-by: Ankit Khushwaha <ankitkhushwaha.linux@gmail.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
2025-10-08 21:48:58 -04:00
Yangyu Chen
a154f14160 PCI: Fix regression in pci_bus_distribute_available_resources()
The refactoring in 4292a1e45fd4 ("PCI: Refactor distributing available
memory to use loops") switched pci_bus_distribute_available_resources() to
operate on an array of bridge windows. That accidentally looked up bus
resources via pci_bus_resource_n() and then passed those pointers to helper
routines that expect the resource to belong to the device. As soon as we
execute that code, pci_resource_num() warned because the resource wasn't in
the bridge's resource array.

This happens on my AMD Strix Halo machine with Thunderbolt device; the
error message is shown below:

  WARNING: CPU: 6 PID: 272 at drivers/pci/pci.h:471 pci_bus_distribute_available_resources+0x6ad/0x6d0
  CPU: 6 UID: 0 PID: 272 Comm: irq/33-pciehp Not tainted 6.17.0+ #1 PREEMPT(voluntary)
  Hardware name: PELADN YO Series/YO1, BIOS 1.04 05/15/2025
  RIP: 0010:pci_bus_distribute_available_resources+0x6ad/0x6d0
  Call Trace:
   pci_bus_distribute_available_resources+0x590/0x6d0
   pci_bridge_distribute_available_resources+0x62/0xb0
   pci_assign_unassigned_bridge_resources+0x65/0x1b0
   pciehp_configure_device+0x92/0x160
   pciehp_handle_presence_or_link_change+0x1b5/0x350
   pciehp_ist+0x147/0x1c0

Fix the regression by always fetching the resource directly from the bridge
with pci_resource_n(bridge, PCI_BRIDGE_RESOURCES + i). This restores the
original behaviour while keeping the refactored structure.  Then we can
successfully assign resources to the Thunderbolt device.

Fixes: 4292a1e45fd4 ("PCI: Refactor distributing available memory to use loops")
Reported-by: Kenneth R. Crudup <kenny@panix.com>
Closes: https://lore.kernel.org/r/dd551b81-9e81-480b-aab3-7cf8b8bbc1d0@panix.com
Signed-off-by: Yangyu Chen <cyy@cyyself.name>
[bhelgaas: trim timestamps, etc from commit log]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Tested-By: Kenneth R. Crudup <kenny@panix.com>
Link: https://lore.kernel.org/r/F833CC81-7C60-48FC-A31C-B9999DCC6FA2@icloud.com
Link: https://patch.msgid.link/tencent_8C54420E1B0FF8D804C1B4651DF970716309@qq.com
2025-10-08 16:36:31 -05:00
Linus Torvalds
cd5a0afbdf qcom: add Glymur CPUCP mailbox binding
zynqmp-ipi: misc cleanup
 mtk: add new GPUEB mailbox driver
      cmdq - remove pm_runtime calls from send_data
      gce - make clock-names optional
 misc: change mailbox-altera maintainer
       remove redundant 'fast_io' in regmap_config
       mhuv3 - Remove no_free_ptr
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Merge tag 'mailbox-v6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/jassibrar/mailbox

Pull mailbox updates from Jassi Brar:

 - Qualcomm: add Glymur CPUCP mailbox binding

 - Xilinx Zynq: misc cleanup

 - MediaTek:
     - add new GPUEB mailbox driver
     - cmdq: remove pm_runtime calls from send_data
     - gce: make clock-names optional

 - misc:
     - change mailbox-altera maintainer
     - remove redundant 'fast_io' in regmap_config
     - mhuv3: Remove no_free_ptr

* tag 'mailbox-v6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/jassibrar/mailbox:
  mailbox: mtk-cmdq: Remove pm_runtime APIs from cmdq_mbox_send_data()
  mailbox: add MediaTek GPUEB IPI mailbox
  dt-bindings: mailbox: Add MT8196 GPUEB Mailbox
  mailbox: zynqmp-ipi: Fix SGI cleanup on unbind
  mailbox: zynqmp-ipi: Fix out-of-bounds access in mailbox cleanup loop
  mailbox: zynqmp-ipi: Remove dev.parent check in zynqmp_ipi_free_mboxes
  mailbox: zynqmp-ipi: Remove redundant mbox_controller_unregister() call
  mailbox: remove unneeded 'fast_io' parameter in regmap_config
  dt-bindings: mailbox: mediatek,gce-mailbox: Make clock-names optional
  dt-bindings: mailbox: qcom: Document Glymur CPUCP mailbox controller binding
  MAINTAINERS: Change mailbox-altera maintainer
  mailbox: arm_mhuv3: Remove no_free_ptr() to maintain the original form of the pointer
2025-10-08 11:44:21 -07:00
Linus Torvalds
ed4d6e9246 VFIO updates for v6.18-rc1 part 2
- Optimizations for DMA map and unmap opertions through the type1
    vfio IOMMU backend.  This uses various means of batching and hints
    from the mm structures to improve efficiency and therefore
    performance, resulting in a significant speedup for huge page
    use cases. (Li Zhe)
 
  - Expose supported device migration features through debugfs.
    (Cédric Le Goater)
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Merge tag 'vfio-v6.18-rc1-pt2' of https://github.com/awilliam/linux-vfio

Pull more VFIO updates from Alex Williamson:

 - Optimizations for DMA map and unmap opertions through the type1 vfio
   IOMMU backend.

   This uses various means of batching and hints from the mm structures
   to improve efficiency and therefore performance, resulting in a
   significant speedup for huge page use cases (Li Zhe)

 - Expose supported device migration features through debugfs (Cédric Le
   Goater)

* tag 'vfio-v6.18-rc1-pt2' of https://github.com/awilliam/linux-vfio:
  vfio: Dump migration features under debugfs
  vfio/type1: optimize vfio_unpin_pages_remote()
  vfio/type1: introduce a new member has_rsvd for struct vfio_dma
  vfio/type1: batch vfio_find_vpfn() in function vfio_unpin_pages_remote()
  vfio/type1: optimize vfio_pin_pages_remote()
  mm: introduce num_pages_contiguous()
2025-10-08 11:22:27 -07:00
Linus Torvalds
99cedb6b8f Input updates for v6.18-rc0
- a number of conversions to yaml/json schema and fixes for
   input-related device tree bindings
 
 - a new driver for Awinic AW86927 haptic chip
 
 - a new driver for Hynitron CST816x series controller
 
 - a new driver for add Himax HX852x(ES) touchscreen controller
 
 - a fix to uinput to not leak kernel memory via a gap in
   uinput_ff_upload_compat structure
 
 - a fix to prevent overflow in pressure calculation in tsc2007 driver
   causing phantom touches
 
 - a change to Atmel maxTouch driver to support generic touchscreen
   configuration (flip, rotate, etc.)
 
 - support for platform data was dropped in tca8418_keypad,
   pxa27x-keypad, spear-keyboard and twl4030_keypad drivers, they all
   now rely on generic device properties for configuration
 
 - other assorted changes and fixes.
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Merge tag 'input-for-v6.18-rc0' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input

Pull input updates from Dmitry Torokhov:

 - Conversions to yaml/json schema and fixes for input-related device
   tree bindings

 - New drivers:
     - Awinic AW86927 haptic chip
     - Hynitron CST816x series controller
     - Himax HX852x(ES) touchscreen controller

 - Fix uinput to not leak kernel memory via a gap in
   uinput_ff_upload_compat structure

 - Prevent overflow in pressure calculation in tsc2007 driver causing
   phantom touches

 - Make the Atmel maxTouch driver support generic touchscreen
   configuration (flip, rotate, etc)

 - Drop support for platform data in tca8418_keypad, pxa27x-keypad,
   spear-keyboard and twl4030_keypad drivers, they all now rely on
   generic device properties for configuration

 - Other assorted changes and fixes

* tag 'input-for-v6.18-rc0' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (50 commits)
  Input: atmel_mxt_ts - allow reset GPIO to sleep
  Input: aw86927 - fix error code in probe()
  Input: psxpad-spi - add a check for the return value of spi_setup()
  Input: uinput - zero-initialize uinput_ff_upload_compat to avoid info leak
  Input: aw86927 - add driver for Awinic AW86927
  dt-bindings: input: Add Awinic AW86927
  dt-bindings: touchscreen: remove touchscreen.txt
  dt-bindings: arm: bcm: raspberrypi,bcm2835-firmware: Add touchscreen child node
  dt-bindings: touchscreen: convert eeti bindings to json schema
  Input: pm8941-pwrkey - disable wakeup for resin by default
  dt-bindings: input: pm8941-pwrkey: Document wakeup-source property
  Input: add driver for Hynitron CST816x series
  dt-bindings: input: touchscreen: add hynitron cst816x series
  Input: imx6ul_tsc - set glitch threshold by DTS property
  dt-bindings: touchscreen: fsl,imx6ul-tsc: support glitch thresold
  dt-bindings: touchscreen: add debounce-delay-us property
  Input: ps2-gpio - fix typo
  Input: atmel_mxt_ts - add support for generic touchscreen configurations
  dt-bindings: input: maxtouch: add common touchscreen properties
  dt-bindings: touchscreen: convert zet6223 bindings to json schema
  ...
2025-10-08 09:44:38 -07:00
Linus Torvalds
7c8dcac8d7 This push contains the following changes:
- Fix zstd regression.
 - Ensure ti driver algorithm are set as async.
 - Revert patch disabling SHA1 in FIPS mode.
 - Fix RNG set_ent null-pointer dereference.
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Merge tag 'v6.18-p2' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6

Pull crypto fixes from Herbert Xu:

 - Fix zstd regression

 - Ensure ti driver algorithm are set as async

 - Revert patch disabling SHA1 in FIPS mode

 - Fix RNG set_ent null-pointer dereference

* tag 'v6.18-p2' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  crypto: rng - Ensure set_ent is always present
  Revert "crypto: testmgr - desupport SHA-1 for FIPS 140"
  crypto: ti - Add CRYPTO_ALG_ASYNC flag to DTHEv2 AES algos
  crypto: zstd - Fix compression bug caused by truncation
2025-10-08 09:38:31 -07:00
Steven Rostedt
c834a97962 tracing: Fix irqoff tracers on failure of acquiring calltime
The functions irqsoff_graph_entry() and irqsoff_graph_return() both call
func_prolog_dec() that will test if the data->disable is already set and
if not, increment it and return. If it was set, it returns false and the
caller exits.

The caller of this function must decrement the disable counter, but misses
doing so if the calltime fails to be acquired.

Instead of exiting out when calltime is NULL, change the logic to do the
work if it is not NULL and still do the clean up at the end of the
function if it is NULL.

Cc: stable@vger.kernel.org
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Link: https://lore.kernel.org/20251008114943.6f60f30f@gandalf.local.home
Fixes: a485ea9e3ef3 ("tracing: Fix irqsoff and wakeup latency tracers when using function graph")
Reported-by: Sasha Levin <sashal@kernel.org>
Closes: https://lore.kernel.org/linux-trace-kernel/20251006175848.1906912-2-sashal@kernel.org/
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
2025-10-08 12:10:44 -04:00
Steven Rostedt
4f7bf54b07 tracing: Fix wakeup tracers on failure of acquiring calltime
The functions wakeup_graph_entry() and wakeup_graph_return() both call
func_prolog_preempt_disable() that will test if the data->disable is
already set and if not, increment it and disable preemption. If it was
set, it returns false and the caller exits.

The caller of this function must decrement the disable counter, but misses
doing so if the calltime fails to be acquired.

Instead of exiting out when calltime is NULL, change the logic to do the
work if it is not NULL and still do the clean up at the end of the
function if it is NULL.

Cc: stable@vger.kernel.org
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Link: https://lore.kernel.org/20251008114835.027b878a@gandalf.local.home
Fixes: a485ea9e3ef3 ("tracing: Fix irqsoff and wakeup latency tracers when using function graph")
Reported-by: Sasha Levin <sashal@kernel.org>
Closes: https://lore.kernel.org/linux-trace-kernel/20251006175848.1906912-1-sashal@kernel.org/
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
2025-10-08 12:10:26 -04:00