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Author SHA1 Message Date
Uma Shankar
ed0ebbc89f drm/i915: Add register definitions for Plane Degamma 
Add macros to define Plane Degamma registers

v2:
 - Add BSpec links (Suraj)
v3:
 - Add Bspec links in trailer (Suraj)
 - Fix checkpatch issues (Suraj)

BSpec: 50411, 50412, 50413, 50414
Reviewed-by: Suraj Kandpal <suraj.kandpal@intel.com>
Signed-off-by: Uma Shankar <uma.shankar@intel.com>
Signed-off-by: Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com>
Link: https://patch.msgid.link/20251203085211.3663374-9-uma.shankar@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
 2025-12-04 19:43:47 +02:00
Uma Shankar
f00d02707d drm/i915/color: Add plane CTM callback for D12 and beyond 
Add callback for setting CTM block in platforms D12 and beyond

v2:
- Add dsb support
- Pass plane_state as we are now doing a uapi to hw state copy
- Add support for 3x4 matrix

v3:
- Add relevant header file
- Fix typo (Suraj)
- Add callback to TGL+ (Suraj)

Reviewed-by: Suraj Kandpal <suraj.kandpal@intel.com>
Signed-off-by: Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com>
Signed-off-by: Uma Shankar <uma.shankar@intel.com>
Link: https://patch.msgid.link/20251203085211.3663374-8-uma.shankar@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
 2025-12-04 19:43:46 +02:00
Chaitanya Kumar Borah
6f1e094fb6 drm/i915/color: Preserve sign bit when int_bits is Zero 
When int_bits == 0, we lose the sign bit when we do the range check
and apply the mask.

Fix this by ensuring a minimum of one integer bit, which guarantees space
for the sign bit in fully fractional representations (e.g. S0.12)

Reviewed-by: Suraj Kandpal <suraj.kandpal@intel.com>
Signed-off-by: Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com>
Signed-off-by: Uma Shankar <uma.shankar@intel.com>
Link: https://patch.msgid.link/20251203085211.3663374-7-uma.shankar@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
 2025-12-04 19:43:46 +02:00
Chaitanya Kumar Borah
a78f1b6baf drm/i915/color: Add framework to program CSC 
Add framework to program CSC. It enables copying of matrix from UAPI
to intel plane state. Also add helper functions which will eventually
program values to hardware.

Add a crtc state variable to track plane color change.

v2:
- Add crtc_state->plane_color_changed
- Improve comments (Suraj)
- s/intel_plane_*_color/intel_plane_color_* (Suraj)

v3:
- align parameters with open braces (Suraj)
- Improve commit message (Suraj)

v4:
- Re-arrange variable declaration (Suraj)

Reviewed-by: Suraj Kandpal <suraj.kandpal@intel.com>
Signed-off-by: Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com>
Signed-off-by: Uma Shankar <uma.shankar@intel.com>
Link: https://patch.msgid.link/20251203085211.3663374-6-uma.shankar@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
 2025-12-04 19:43:46 +02:00
Chaitanya Kumar Borah
ef10531681 drm/i915/color: Create a transfer function color pipeline 
Add a color pipeline with three colorops in the sequence

        1D LUT - 3x4 CTM - 1D LUT

This pipeline can be used to do any color space conversion or HDR
tone mapping

v2: Change namespace to drm_plane_colorop*
v3: Use simpler/pre-existing colorops for first iteration
v4:
 - s/*_tf_*/*_color_* (Jani)
 - Refactor to separate files (Jani)
 - Add missing space in comment (Suraj)
 - Consolidate patch that adds/attaches pipeline property
v5:
 - Limit MAX_COLOR_PIPELINES to 2.(Suraj)
	Increase it as and when we add more pipelines.
 - Remove redundant initialization code (Suraj)
v6:
 - Use drm_plane_create_color_pipeline_property() (Arun)
	Now MAX_COLOR_PIPELINES is 1

Reviewed-by: Suraj Kandpal <suraj.kandpal@intel.com>
Signed-off-by: Uma Shankar <uma.shankar@intel.com>
Signed-off-by: Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com>
Link: https://patch.msgid.link/20251203085211.3663374-5-uma.shankar@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
 2025-12-04 19:43:46 +02:00
Chaitanya Kumar Borah
730df5065e drm/i915/color: Add helper to create intel colorop 
Add intel colorop create helper

v2:
 - Make function names consistent (Jani)
 - Remove redundant code related to colorop state
 - Refactor code to separate files

Reviewed-by: Suraj Kandpal <suraj.kandpal@intel.com>
Signed-off-by: Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com>
Signed-off-by: Uma Shankar <uma.shankar@intel.com>
Link: https://patch.msgid.link/20251203085211.3663374-4-uma.shankar@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
 2025-12-04 19:43:46 +02:00
Chaitanya Kumar Borah
3e9b06559a drm/i915: Add intel_color_op 
Add data structure to store intel specific details of colorop

v2:
 - Remove dead code
 - Convert macro to function (Jani)
 - Remove colorop state as it is not being used
 - Refactor to separate file

Reviewed-by: Suraj Kandpal <suraj.kandpal@intel.com>
Signed-off-by: Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com>
Signed-off-by: Uma Shankar <uma.shankar@intel.com>
Link: https://patch.msgid.link/20251203085211.3663374-3-uma.shankar@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
 2025-12-04 19:43:46 +02:00
Chaitanya Kumar Borah
4cd8a64b15 drm/i915/display: Add identifiers for driver specific blocks 
Add macros to identify intel specific color blocks. It will help
in mapping drm_color_ops to intel color HW blocks

v2:- Prefix enums with INTEL_* (Jani, Suraj)
   - Remove unnecessary comments (Jani)
   - Commit message improvements (Suraj)

Reviewed-by: Suraj Kandpal <suraj.kandpal@intel.com>
Signed-off-by: Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com>
Signed-off-by: Uma Shankar <uma.shankar@intel.com>
Link: https://patch.msgid.link/20251203085211.3663374-2-uma.shankar@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
 2025-12-04 19:43:46 +02:00
Joshua Hahn
83c8f7b5e1 mm/mm_init: Introduce a boot parameter for check_pages 
Use-after-free and double-free bugs can be very difficult to track down.
The kernel is good at tracking these and preventing bad pages from being
used/created through simple checks gated behind "check_pages_enabled".

Currently, the only ways to enable this flag is by building with
CONFIG_DEBUG_VM, or as a side effect of other checks such as
init_on_{alloc, free}, page_poisoning, or debug_pagealloc among others.
These solutions are powerful, but may often be too coarse in balancing
the performance vs. safety that a user may want, particularly in
latency-sensitive production environments.

Introduce a new boot parameter "check_pages", which enables page checking
with no other side effects. It takes kstrbool-able inputs as an argument
(i.e. 0/1, true/false, on/off, ...). This patch is backwards-compatible;
setting CONFIG_DEBUG_VM still enables page checking.

Acked-by: SeongJae Park <sj@kernel.org>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Signed-off-by: Joshua Hahn <joshua.hahnjy@gmail.com>
Link: https://patch.msgid.link/20251201180739.2330474-1-joshua.hahnjy@gmail.com
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
 2025-12-04 19:40:25 +02:00
Linus Torvalds
6dfafbd029 Merge tag 'drm-next-2025-12-03' of https://gitlab.freedesktop.org/drm/kernel 
Pull drm updates from Dave Airlie:
 "There was a rather late merge of a new color pipeline feature, that
  some userspace projects are blocked on, and has seen a lot of work in
  amdgpu. This should have seen some time in -next. There is additional
  support for this for Intel, that if it arrives in the next day or two
  I'll pass it on in another pull request and you can decide if you want
  to take it.

  Highlights:
   - Arm Ethos NPU accelerator driver
   - new DRM color pipeline support
   - amdgpu will now run discrete SI/CIK cards instead of radeon, which
     enables vulkan support in userspace
   - msm gets gen8 gpu support
   - initial Xe3P support in xe

  Full detail summary:

  New driver:
   - Arm Ethos-U65/U85 accel driver

  Core:
   - support the drm color pipeline in vkms/amdgfx
   - add support for drm colorop pipeline
   - add COLOR PIPELINE plane property
   - add DRM_CLIENT_CAP_PLANE_COLOR_PIPELINE
   - throttle dirty worker with vblank
   - use drm_for_each_bridge_in_chain_scoped in drm's bridge code
   - Ensure drm_client_modeset tests are enabled in UML
   - add simulated vblank interrupt - use in drivers
   - dumb buffer sizing helper
   - move freeing of drm client memory to driver
   - crtc sharpness strength property
   - stop using system_wq in scheduler/drivers
   - support emergency restore in drm-client

  Rust:
   - make slice::as_flattened usable on all supported rustc
   - add FromBytes::from_bytes_prefix() method
   - remove redundant device ptr from Rust GEM object
   - Change how AlwaysRefCounted is implemented for GEM objects

  gpuvm:
   - Add deferred vm_bo cleanup to GPUVM (for rust)

  atomic:
   - cleanup and improve state handling interfaces

  buddy:
   - optimize block management

  dma-buf:
   - heaps: Create heap per CMA reserved location
   - improve userspace documentation

  dp:
   - add POST_LT_ADJ_REQ training sequence
   - DPCD dSC quirk for synaptics panamera devices
   - helpers to query branch DSC max throughput

  ttm:
   - Rename ttm_bo_put to ttm_bo_fini
   - allow page protection flags on risc-v
   - rework pipelined eviction fence handling

  amdgpu:
   - enable amdgpu by default for SI/CI dGPUs
   - enable DC by default on SI
   - refactor CIK/SI enablement
   - add ABM KMS property
   - Re-enable DM idle optimizations
   - DC Analog encoders support
   - Powerplay fixes for fiji/iceland
   - Enable DC on bonaire by default
   - HMM cleanup
   - Add new RAS framework
   - DML2.1 updates
   - YCbCr420 fixes
   - DC FP fixes
   - DMUB fixes
   - LTTPR fixes
   - DTBCLK fixes
   - DMU cursor offload handling
   - Userq validation improvements
   - Unify shutdown callback handling
   - Suspend improvements
   - Power limit code cleanup
   - SR-IOV fixes
   - AUX backlight fixes
   - DCN 3.5 fixes
   - HDMI compliance fixes
   - DCN 4.0.1 cursor updates
   - DCN interrupt fix
   - DC KMS full update improvements
   - Add additional HDCP traces
   - DCN 3.2 fixes
   - DP MST fixes
   - Add support for new SR-IOV mailbox interface
   - UQ reset support
   - HDP flush rework
   - VCE1 support

  amdkfd:
   - HMM cleanups
   - Relax checks on save area overallocations
   - Fix GPU mappings after prefetch

  radeon:
   - refactor CIK/SI enablement

  xe:
   - Initial Xe3P support
   - panic support on VRAM for display
   - fix stolen size check
   - Loosen used tracking restriction
   - New SR-IOV debugfs structure and debugfs updates
   - Hide the GPU madvise flag behind a VM_BIND flag
   - Always expose VRAM provisioning data on discrete GPUs
   - Allow VRAM mappings for userptr when used with SVM
   - Allow pinning of p2p dma-buf
   - Use per-tile debugfs where appropriate
   - Add documentation for Execution Queues
   - PF improvements
   - VF migration recovery redesign work
   - User / Kernel VRAM partitioning
   - Update Tile-based messages
   - Allow configfs to disable specific GT types
   - VF provisioning and migration improvements
   - use SVM range helpers in PT layer
   - Initial CRI support
   - access VF registers using dedicated MMIO view
   - limit number of jobs per exec queue
   - add sriov_admin sysfs tree
   - more crescent island specific support
   - debugfs residency counter
   - SRIOV migration work
   - runtime registers for GFX 35

  i915:
   - add initial Xe3p_LPD display version 35 support
   - Enable LNL+ content adaptive sharpness filter
   - Use optimized VRR guardband
   - Enable Xe3p LT PHY
   - enable FBC support for Xe3p_LPD display
   - add display 30.02 firmware support
   - refactor SKL+ watermark latency setup
   - refactor fbdev handling
   - call i915/xe runtime PM via function pointers
   - refactor i915/xe stolen memory/display interfaces
   - use display version instead of gfx version in display code
   - extend i915_display_info with Type-C port details
   - lots of display cleanups/refactorings
   - set O_LARGEFILE in __create_shmem
   - skuip guc communication warning on reset
   - fix time conversions
   - defeature DRRS on LNL+
   - refactor intel_frontbuffer split between i915/xe/display
   - convert inteL_rom interfaces to struct drm_device
   - unify display register polling interfaces
   - aovid lock inversion when pinning to GGTT on CHV/BXT+VTD

  panel:
   - Add KD116N3730A08/A12, chromebook mt8189
   - JT101TM023, LQ079L1SX01,
   - GLD070WX3-SL01 MIPI DSI
   - Samsung LTL106AL0, Samsung LTL106AL01
   - Raystar RFF500F-AWH-DNN
   - Winstar WF70A8SYJHLNGA
   - Wanchanglong w552946aaa
   - Samsung SOFEF00
   - Lenovo X13s panel
   - ilitek-ili9881c - add rpi 5" support
   - visionx-rm69299 - add backlight support
   - edp - support AUI B116XAN02.0

  bridge:
   - improve ref counting
   - ti-sn65dsi86 - add support for DP mode with HPD
   - synopsis: support CEC, init timer with correct freq
   - ASL CS5263 DP-to-HDMI bridge support

  nova-core:
   - introduce bitfield! macro
   - introduce safe integer converters
   - GSP inits to fully booted state on Ampere
   - Use more future-proof register for GPU identification

  nova-drm:
   - select NOVA_CORE
   - 64-bit only

  nouveau:
   - improve reclocking on tegra 186+
   - add large page and compression support

  msm:
   - GPU:
      - Gen8 support: A840 (Kaanapali) and X2-85 (Glymur)
      - A612 support
   - MDSS:
      - Added support for Glymur and QCS8300 platforms
   - DPU:
      - Enabled Quad-Pipe support, unlocking higher resolutions support
      - Added support for Glymur platform
      - Documented DPU on QCS8300 platform as supported
   - DisplayPort:
      - Added support for Glymur platform
      - Added support lame remapping inside DP block
      - Documented DisplayPort controller on QCS8300 and SM6150/QCS615
        as supported

  tegra:
   - NVJPG driver

  panfrost:
   - display JM contexts over debugfs
   - export JM contexts to userspace
   - improve error and job handling

  panthor:
   - support custom ASN_HASH for mt8196
   - support mali-G1 GPU
   - flush shmem write before mapping buffers uncached
   - make timeout per-queue instead of per-job

  mediatek:
   - MT8195/88 HDMIv2/DDCv2 support

  rockchip:
   - dsi: add support for RK3368

  amdxdna:
   - enhance runtime PM
   - last hardware error reading uapi
   - support firmware debug output
   - add resource and telemetry data uapi
   - preemption support

  imx:
   - add driver for HDMI TX Parallel audio interface

  ivpu:
   - add support for user-managed preemption buffer
   - add userptr support
   - update JSM firware API to 3.33.0
   - add better alloc/free warnings
   - fix page fault in unbind all bos
   - rework bind/unbind of imported buffers
   - enable MCA ECC signalling
   - split fw runtime and global memory buffers
   - add fdinfo memory statistics

  tidss:
   - convert to drm logging
   - logging cleanup

  ast:
   - refactor generation init paths
   - add per chip generation detect_tx_chip
   - set quirks for each chip model

  atmel-hlcdc:
   - set LCDC_ATTRE register in plane disable
   - set correct values for plane scaler

  solomon:
   - use drm helper for get_modes and move_valid

  sitronix:
   - fix output position when clearing screens

  qaic:
   - support dma-buf exports
   - support new firmware's READ_DATA implementation
   - sahara AIC200 image table update
   - add sysfs support
   - add coredump support
   - add uevents support
   - PM support

  sun4i:
   - layer refactors to decouple plane from output
   - improve DE33 support

  vc4:
   - switch to generic CEC helpers

  komeda:
   - use drm_ logging functions

  vkms:
   - configfs support for display configuration

  vgem:
   - fix fence timer deadlock

  etnaviv:
   - add HWDB entry for GC8000 Nano Ultra VIP r6205"

* tag 'drm-next-2025-12-03' of https://gitlab.freedesktop.org/drm/kernel: (1869 commits)
  Revert "drm/amd: Skip power ungate during suspend for VPE"
  drm/amdgpu: use common defines for HUB faults
  drm/amdgpu/gmc12: add amdgpu_vm_handle_fault() handling
  drm/amdgpu/gmc11: add amdgpu_vm_handle_fault() handling
  drm/amdgpu: use static ids for ACP platform devs
  drm/amdgpu/sdma6: Update SDMA 6.0.3 FW version to include UMQ protected-fence fix
  drm/amdgpu: Forward VMID reservation errors
  drm/amdgpu/gmc8: Delegate VM faults to soft IRQ handler ring
  drm/amdgpu/gmc7: Delegate VM faults to soft IRQ handler ring
  drm/amdgpu/gmc6: Delegate VM faults to soft IRQ handler ring
  drm/amdgpu/gmc6: Cache VM fault info
  drm/amdgpu/gmc6: Don't print MC client as it's unknown
  drm/amdgpu/cz_ih: Enable soft IRQ handler ring
  drm/amdgpu/tonga_ih: Enable soft IRQ handler ring
  drm/amdgpu/iceland_ih: Enable soft IRQ handler ring
  drm/amdgpu/cik_ih: Enable soft IRQ handler ring
  drm/amdgpu/si_ih: Enable soft IRQ handler ring
  drm/amd/display: fix typo in display_mode_core_structs.h
  drm/amd/display: fix Smart Power OLED not working after S4
  drm/amd/display: Move RGB-type check for audio sync to DCE HW sequence
  ...
 2025-12-04 08:53:30 -08:00
Linus Torvalds
94e244d9cc Merge tag 'auxdisplay-v6.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/andy/linux-auxdisplay 
Pull auxdisplay updates from Andy Shevchenko:

 - Support linedisp attribute attachment to auxdisplay parent devices

* tag 'auxdisplay-v6.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/andy/linux-auxdisplay:
  auxdisplay: linedisp: support attribute attachment to auxdisplay devices
  auxdisplay: linedisp: add num_chars sysfs attribute
  auxdisplay: linedisp: display static message when length <= display size
  auxdisplay: linedisp: encapsulate container_of usage within to_linedisp
  docs: ABI: auxdisplay: document linedisp library sysfs attributes
 2025-12-04 08:29:28 -08:00
Linus Torvalds
d7aa60d966 Merge tag 'media/v6.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media 
Pull media updates from Mauro Carvalho Chehab:

 - New drivers:
    - Mali-C55 ISP
    - Rockchip VICAP (RKCIF)
    - RKVDEC HEVC Decoder
    - Renesas RZV2H IVC
    - Sony IMX111 CMOS sensor driver

 - Removed STi C8SECTPFE Driver

 - Added a V4L2 ISP generic framework

 - Usual set of cleanup, fixes and driver improvements

* tag 'media/v6.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (249 commits)
  media: rockchip: rkcif: add support for rk3568 vicap mipi capture
  media: rockchip: rkcif: add support for rk3568 vicap dvp capture
  media: rockchip: rkcif: add support for px30 vip dvp capture
  media: rockchip: rkcif: add abstraction for dma blocks
  media: rockchip: rkcif: add abstraction for interface and crop blocks
  media: rockchip: add driver for the rockchip camera interface
  media: dt-bindings: add rockchip rk3568 vicap
  media: dt-bindings: add rockchip px30 vip
  media: dt-bindings: video-interfaces: add defines for sampling modes
  Documentation: admin-guide: media: add rockchip camera interface
  media: mali-c55: Mark pm handlers as __maybe_unused
  media: mali-c55: Assert ISP blocks size correctness
  media: v4l2-isp: Rename block_info to block_type_info
  MAINTAINERS: Add entry for rzv2h-ivc driver
  media: platform: Add Renesas Input Video Control block driver
  dt-bindings: media: Add bindings for the RZ/V2H(P) IVC block
  Documentation: media: mali-c55: Document the mali-c55 parameter setting
  media: platform: Add mali-c55 parameters video node
  media: uapi: Add parameters structs to mali-c55-config.h
  media: mali-c55: Add image formats for Mali-C55 parameters buffer
  ...
 2025-12-04 08:15:19 -08:00
Arnd Bergmann
e45b5df47b drm/xe/pf: fix VFIO link error 
The Makefile logic for building xe_sriov_vfio.o was added incorrectly,
as setting CONFIG_XE_VFIO_PCI=m means it doesn't get included into a
built-in xe driver:

ERROR: modpost: "xe_sriov_vfio_stop_copy_enter" [drivers/vfio/pci/xe/xe-vfio-pci.ko] undefined!
ERROR: modpost: "xe_sriov_vfio_stop_copy_exit" [drivers/vfio/pci/xe/xe-vfio-pci.ko] undefined!
ERROR: modpost: "xe_sriov_vfio_suspend_device" [drivers/vfio/pci/xe/xe-vfio-pci.ko] undefined!
ERROR: modpost: "xe_sriov_vfio_wait_flr_done" [drivers/vfio/pci/xe/xe-vfio-pci.ko] undefined!
ERROR: modpost: "xe_sriov_vfio_error" [drivers/vfio/pci/xe/xe-vfio-pci.ko] undefined!
ERROR: modpost: "xe_sriov_vfio_resume_data_enter" [drivers/vfio/pci/xe/xe-vfio-pci.ko] undefined!
ERROR: modpost: "xe_sriov_vfio_resume_device" [drivers/vfio/pci/xe/xe-vfio-pci.ko] undefined!
ERROR: modpost: "xe_sriov_vfio_resume_data_exit" [drivers/vfio/pci/xe/xe-vfio-pci.ko] undefined!
ERROR: modpost: "xe_sriov_vfio_data_write" [drivers/vfio/pci/xe/xe-vfio-pci.ko] undefined!
ERROR: modpost: "xe_sriov_vfio_migration_supported" [drivers/vfio/pci/xe/xe-vfio-pci.ko] undefined!
WARNING: modpost: suppressed 3 unresolved symbol warnings because there were too many)

Check for CONFIG_XE_VFIO_PCI being enabled in the Makefile to decide whether to
include the object instead.

Fixes: bd45d46ffc ("drm/xe/pf: Export helpers for VFIO")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Link: https://patch.msgid.link/20251204094154.1029357-1-arnd@kernel.org
(cherry picked from commit ef7de33544a7a6783d7afe09496da362d1e90ba1)
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
 2025-12-04 16:34:00 +01:00
Ian Kent
b6cb3ccef6 autofs: fix per-dentry timeout warning 
The check that determines if the message that warns about the per-dentry
timeout being greater than the super block timeout is not correct.

The initial value for this field is -1 and the type of the field is
unsigned long.

I could change the type to long but the message is in the wrong place
too, it should come after the timeout setting. So leave everything else
as it is and move the message and check the timeout is actually set
as an additional condition on issuing the message. Also fix the timeout
comparison.

Signed-off-by: Ian Kent <raven@themaw.net>
Link: https://patch.msgid.link/20251111060439.19593-2-raven@themaw.net
Signed-off-by: Christian Brauner <brauner@kernel.org>
 2025-12-04 09:57:51 +01:00
Ian Rogers
c9a8c343ef perf stat: When no events, don't report an error if there is none 
Events may fail to open as no supported CPUs were specified on the
command line. In this case a confusing "error" message of "success"
can be reported. Let's skip the error in that case.

Before:
```
$ perf stat -C2048 -e cycles -- true
WARNING: A requested CPU in '2048' is not supported by PMU 'cpu' (CPUs 0-7) for event 'cycles'
Error:
No supported events found.
The sys_perf_event_open() syscall returned with 0 (Success) for event (cpu/unknown-hardware/).
"dmesg | grep -i perf" may provide additional information.
```

After:
```
$ perf stat -C2048 -e cycles -- true
WARNING: A requested CPU in '2048' is not supported by PMU 'cpu' (CPUs 0-7) for event 'cycles'
Error:
No supported events found.
```

Signed-off-by: Ian Rogers <irogers@google.com>
Tested-by: Thomas Richter <tmricht@linux.ibm.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
 2025-12-04 00:36:14 -08:00
Ian Rogers
279b5a85eb perf tests stat: Add "--null" coverage 
Ensure "--null" does a minimal run.

Reported-by: Ingo Molnar <mingo@kernel.org>
Closes: https://lore.kernel.org/linux-perf-users/aSwt7yzFjVJCEmVp@gmail.com/
Tested-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Ian Rogers <irogers@google.com>
Tested-by: Thomas Richter <tmricht@linux.ibm.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
 2025-12-04 00:36:14 -08:00
Ian Rogers
e2de90bdc9 perf cpumap: Add "any" CPU handling to cpu_map__snprint_mask 
If the perf_cpu_map is empty or is just the any CPU value, then early
return. Don't process the "any" CPU when creating the bitmap.

Tested-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Ian Rogers <irogers@google.com>
Tested-by: Thomas Richter <tmricht@linux.ibm.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
 2025-12-04 00:36:14 -08:00
Ian Rogers
a0a4173631 libperf cpumap: Fix perf_cpu_map__max for an empty/NULL map 
Passing an empty map to perf_cpu_map__max triggered a SEGV. Explicitly
test for the empty map.

Reported-by: Ingo Molnar <mingo@kernel.org>
Closes: https://lore.kernel.org/linux-perf-users/aSwt7yzFjVJCEmVp@gmail.com/
Tested-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Ian Rogers <irogers@google.com>
Tested-by: Thomas Richter <tmricht@linux.ibm.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
 2025-12-04 00:36:14 -08:00
Ian Rogers
6744c0b182 perf stat: Allow no events to open if this is a "--null" run 
It is intended that a "--null" run doesn't open any events.

Fixes: 2cc7aa995c ("perf stat: Refactor retry/skip/fatal error handling")
Tested-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Ian Rogers <irogers@google.com>
Tested-by: Thomas Richter <tmricht@linux.ibm.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
 2025-12-04 00:36:14 -08:00
Linus Torvalds
559e608c46 Merge tag 'ntfs3_for_6.19' of https://github.com/Paragon-Software-Group/linux-ntfs3 
Pull ntfs3 updates from Konstantin Komarov:
 "New code:
   - support timestamps prior to epoch
   - do not overwrite uptodate pages
   - disable readahead for compressed files
   - setting of dummy blocksize to read boot_block when mounting
   - the run_lock initialization when loading $Extend
   - initialization of allocated memory before use
   - support for the NTFS3_IOC_SHUTDOWN ioctl
   - check for minimum alignment when performing direct I/O reads
   - check for shutdown in fsync

  Fixes:
   - mount failure for sparse runs in run_unpack()
   - use-after-free of sbi->options in cmp_fnames
   - KMSAN uninit bug after failed mi_read in mi_format_new
   - uninit error after buffer allocation by __getname()
   - KMSAN uninit-value in ni_create_attr_list
   - double free of sbi->options->nls and ownership of fc->fs_private
   - incorrect vcn adjustments in attr_collapse_range()
   - mode update when ACL can be reduced to mode
   - memory leaks in add sub record

  Changes:
   - refactor code, updated terminology, spelling
   - do not kmap pages in (de)compression code
   - after ntfs_look_free_mft(), code that fails must put mft_inode
   - default mount options for "acl" and "prealloc"

  Replaced:
   - use unsafe_memcpy() to avoid memcpy size warning
   - ntfs_bio_pages with page cache for compressed files"

* tag 'ntfs3_for_6.19' of https://github.com/Paragon-Software-Group/linux-ntfs3: (26 commits)
  fs/ntfs3: check for shutdown in fsync
  fs/ntfs3: change the default mount options for "acl" and "prealloc"
  fs/ntfs3: Prevent memory leaks in add sub record
  fs/ntfs3: out1 also needs to put mi
  fs/ntfs3: Fix spelling mistake "recommened" -> "recommended"
  fs/ntfs3: update mode in xattr when ACL can be reduced to mode
  fs/ntfs3: check minimum alignment for direct I/O
  fs/ntfs3: implement NTFS3_IOC_SHUTDOWN ioctl
  fs/ntfs3: correct attr_collapse_range when file is too fragmented
  ntfs3: fix double free of sbi->options->nls and clarify ownership of fc->fs_private
  fs/ntfs3: Initialize allocated memory before use
  fs/ntfs3: remove ntfs_bio_pages and use page cache for compressed I/O
  ntfs3: avoid memcpy size warning
  fs/ntfs3: fix KMSAN uninit-value in ni_create_attr_list
  ntfs3: init run lock for extend inode
  ntfs: set dummy blocksize to read boot_block when mounting
  fs/ntfs3: disable readahead for compressed files
  ntfs3: Fix uninit buffer allocated by __getname()
  ntfs3: fix uninit memory after failed mi_read in mi_format_new
  ntfs3: fix use-after-free of sbi->options in cmp_fnames
  ...
 2025-12-03 20:45:43 -08:00
Linus Torvalds
fbeea4db51 Merge tag 'ext4_for_linus-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 
Pull ext4 updates from Ted Ts'o:
 "New features and improvements for the ext4 file system:
   - Optimize online defragmentation by using folios instead of
     individual buffer heads
   - Improve error codes stored in the superblock when the journal
     aborts
   - Minor cleanups and clarifications in ext4_map_blocks()
   - Add documentation of the casefold and encrypt flags
   - Add support for file systems with a blocksize greater than the
     pagesize
   - Improve performance by enabling the caching the fact that an inode
     does not have a Posix ACL

  Various Bug Fixes:
   - Fix false positive complaints from smatch
   - Fix error code which is returned by ext4fs_dirhash() when Siphash
     is used without the encryption key
   - Fix races when writing to inline data files which could trigger a
     BUG
   - Fix potential NULL dereference when there is an corrupt file system
     with an extended attribute value stored in a inode
   - Fix false positive lockdep report when syzbot uses ext4 and ocfs2
     together
   - Fix false positive reported by DEPT by adjusting lock annotation
   - Avoid a potential BUG_ON in jbd2 when a file system is massively
     corrupted
   - Fix a WARN_ON when superblock is corrupted with a non-NULL
     terminated mount options field
   - Add check if the userspace passes in a non-NULL terminated mount
     options field to EXT4_IOC_SET_TUNE_SB_PARAM
   - Fix a potential journal checksum failure whena file system is
     copied while it is mounted read-only
   - Fix a potential potential orphan file tracking error which only
     showed on 32-bit systems
   - Fix assertion checks in mballoc (which have to be explicitly enbled
     by manually enabling AGGRESSIVE_CHECKS and recompiling)
   - Avoid complaining about overly large orphan files created by mke2fs
     with with file systems with a 64k block size"

* tag 'ext4_for_linus-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (58 commits)
  ext4: mark inodes without acls in __ext4_iget()
  ext4: enable block size larger than page size
  ext4: add checks for large folio incompatibilities when BS > PS
  ext4: support verifying data from large folios with fs-verity
  ext4: make data=journal support large block size
  ext4: support large block size in __ext4_block_zero_page_range()
  ext4: support large block size in mpage_prepare_extent_to_map()
  ext4: support large block size in mpage_map_and_submit_buffers()
  ext4: support large block size in ext4_block_write_begin()
  ext4: support large block size in ext4_mpage_readpages()
  ext4: rename 'page' references to 'folio' in multi-block allocator
  ext4: prepare buddy cache inode for BS > PS with large folios
  ext4: support large block size in ext4_mb_init_cache()
  ext4: support large block size in ext4_mb_get_buddy_page_lock()
  ext4: support large block size in ext4_mb_load_buddy_gfp()
  ext4: add EXT4_LBLK_TO_PG and EXT4_PG_TO_LBLK for block/page conversion
  ext4: add EXT4_LBLK_TO_B macro for logical block to bytes conversion
  ext4: support large block size in ext4_readdir()
  ext4: support large block size in ext4_calculate_overhead()
  ext4: introduce s_min_folio_order for future BS > PS support
  ...
 2025-12-03 20:37:15 -08:00
Linus Torvalds
afcbce74f3 Merge tag 'gfs2-for-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2 
Pull gfs2 updates from Andreas Gruenbacher:

 - Major withdraw / error handling overhaul based on dlm's new
   DLM_RELEASE_RECOVER feature: this allows gfs to treat withdraws like
   node failures. Make withdraws asynchronous

 - Fix a bug in commit e4a8b5481c that caused 'df' to remain out of
   sync. ('df' is still allowed to go slightly out of sync for short
   periods of time)

 - Prevent recusive memory reclaim in gfs2_unstuff_dinode()

 - Clean up SDF_JOURNAL_LIVE flag handling

 - Fix remote evict for read-only filesystems

 - Fix a misuse of bio_chain()

 - Various other minor cleanups

* tag 'gfs2-for-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2: (35 commits)
  gfs2: Fix use of bio_chain
  gfs2: Clean up SDF_JOURNAL_LIVE flag handling
  gfs2: No longer thaw filesystems during a withdraw
  gfs2: Withdraw immediately in gfs2_trans_add_meta
  gfs2: New gfs2_withdraw_helper
  gfs2: Clean up properly during a withdraw
  gfs2: Rename gfs2_{gl_dq_holders => withdraw_glocks}
  Revert "gfs2: fix infinite loop when checking ail item count before go_inval"
  Revert "gfs2: Allow some glocks to be used during withdraw"
  Revert "gfs2: Check for log write errors before telling dlm to unlock"
  Revert "gfs2: fix a deadlock on withdraw-during-mount"
  Revert "gfs2: Force withdraw to replay journals and wait for it to finish" (6/6)
  Revert "gfs2: Force withdraw to replay journals and wait for it to finish" (5/6)
  Revert "gfs2: Force withdraw to replay journals and wait for it to finish" (4/6)
  Revert "gfs2: Force withdraw to replay journals and wait for it to finish" (3/6)
  Revert "gfs2: Force withdraw to replay journals and wait for it to finish" (2/6)
  Revert "gfs2: Force withdraw to replay journals and wait for it to finish" (1/6)
  Revert "gfs2: don't stop reads while withdraw in progress"
  gfs2: Rename LM_FLAG_{NOEXP -> RECOVER}
  gfs2: Kill gfs2_io_error_bh_wd
  ...
 2025-12-03 20:28:50 -08:00
Linus Torvalds
869737543b Merge tag 'v6.19-rc-smb-fixes' of git://git.samba.org/ksmbd 
Pull smb client and server updates from Steve French:

 - server fixes:
     - IPC use after free locking fix
     - fix locking bug in delete paths
     - fix use after free in disconnect
     - fix underflow in locking check
     - error mapping improvement
     - socket listening improvement
     - return code mapping fixes
     - crypto improvements (use default libraries)

 - cleanup patches:
     - netfs
     - client checkpatch cleanup
     - server cleanup
     - move server/client duplicate code to common code
     - fix some defines to better match protocol specification

  - smbdirect (RDMA) fixes

  - client debugging improvements for leases

* tag 'v6.19-rc-smb-fixes' of git://git.samba.org/ksmbd: (44 commits)
  cifs: Use netfs_alloc/free_folioq_buffer()
  smb: client: show smb lease key in open_dirs output
  smb: client: show smb lease key in open_files output
  ksmbd: ipc: fix use-after-free in ipc_msg_send_request
  smb: client: relax WARN_ON_ONCE(SMBDIRECT_SOCKET_*) checks in recv_done() and smbd_conn_upcall()
  smb: server: relax WARN_ON_ONCE(SMBDIRECT_SOCKET_*) checks in recv_done() and smb_direct_cm_handler()
  smb: smbdirect: introduce SMBDIRECT_CHECK_STATUS_{WARN,DISCONNECT}()
  smb: smbdirect: introduce SMBDIRECT_DEBUG_ERR_PTR() helper
  ksmbd: vfs: fix race on m_flags in vfs_cache
  ksmbd: Replace strcpy + strcat to improve convert_to_nt_pathname
  smb: move FILE_SYSTEM_ATTRIBUTE_INFO to common/fscc.h
  ksmbd: implement error handling for STATUS_INFO_LENGTH_MISMATCH in smb server
  ksmbd: fix use-after-free in ksmbd_tree_connect_put under concurrency
  ksmbd: server: avoid busy polling in accept loop
  smb: move create_durable_reconn to common/smb2pdu.h
  smb: fix some warnings reported by scripts/checkpatch.pl
  smb: do some cleanups
  smb: move FILE_SYSTEM_SIZE_INFO to common/fscc.h
  smb: move some duplicate struct definitions to common/fscc.h
  smb: move list of FileSystemAttributes to common/fscc.h
  ...
 2025-12-03 20:23:41 -08:00
Linus Torvalds
3ed1c68307 Merge tag 'xfs-merge-6.19' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux 
Pull xfs updates from Carlos Maiolino:
 "There are no major changes in xfs. This contains mostly some code
  cleanups, a few bug fixes and documentation update. Highlights are:

   - Quota locking cleanup

   - Getting rid of old xlog_in_core_2_t type"

* tag 'xfs-merge-6.19' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux: (33 commits)
  docs: remove obsolete links in the xfs online repair documentation
  xfs: move some code out of xfs_iget_recycle
  xfs: use zi more in xfs_zone_gc_mount
  xfs: remove the unused bv field in struct xfs_gc_bio
  xfs: remove xarray mark for reclaimable zones
  xfs: remove the xlog_in_core_t typedef
  xfs: remove l_iclog_heads
  xfs: remove the xlog_rec_header_t typedef
  xfs: remove xlog_in_core_2_t
  xfs: remove a very outdated comment from xlog_alloc_log
  xfs: cleanup xlog_alloc_log a bit
  xfs: don't use xlog_in_core_2_t in struct xlog_in_core
  xfs: add a on-disk log header cycle array accessor
  xfs: add a XLOG_CYCLE_DATA_SIZE constant
  xfs: reduce ilock roundtrips in xfs_qm_vop_dqalloc
  xfs: move xfs_dquot_tree calls into xfs_qm_dqget_cache_{lookup,insert}
  xfs: move quota locking into xrep_quota_item
  xfs: move quota locking into xqcheck_commit_dquot
  xfs: move q_qlock locking into xqcheck_compare_dquot
  xfs: move q_qlock locking into xchk_quota_item
  ...
 2025-12-03 20:19:38 -08:00
Linus Torvalds
477e31fd1e Merge tag 'erofs-for-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs 
Pull erofs updates from Gao Xiang:

 - Fix a WARNING caused by a recent FSDAX misdetection regression

 - Fix the filesystem stacking limit for file-backed mounts

 - Print more informative diagnostics on decompression errors

 - Switch the on-disk definition `erofs_fs.h` to the MIT license

 - Minor cleanups

* tag 'erofs-for-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs:
  erofs: switch on-disk header `erofs_fs.h` to MIT license
  erofs: get rid of raw bi_end_io() usage
  erofs: enable error reporting for z_erofs_fixup_insize()
  erofs: enable error reporting for z_erofs_stream_switch_bufs()
  erofs: improve Zstd, LZMA and DEFLATE error strings
  erofs: improve decompression error reporting
  erofs: tidy up z_erofs_lz4_handle_overlap()
  erofs: limit the level of fs stacking for file-backed mounts
  erofs: correct FSDAX detection
 2025-12-03 20:14:44 -08:00
Linus Torvalds
ca010e2ef6 Merge tag 'hfs-v6.19-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/vdubeyko/hfs 
Pull hfs/hfsplus updates from Viacheslav Dubeyko:
 "Several fixes for syzbot reported issues, HFS/HFS+ fixes of xfstests
  failures, Kunit-based unit-tests introduction, and code cleanup:

   - Dan Carpenter fixed a potential use-after-free issue in
     hfs_correct_next_unused_CNID() method. Tetsuo Handa has made nice
     fix of syzbot reported issue related to incorrect inode->i_mode
     management if volume has been corrupted somehow. Yang Chenzhi has
     made really good fix of potential race condition in
     __hfs_bnode_create() method for HFS+ file system.

   - Several fixes to xfstests failures. Particularly, generic/070,
     generic/073, and generic/101 test-cases finish successfully for the
     case of HFS+ file system right now.

   - HFS and HFS+ drivers share multiple structures of on-disk layout
     declarations. Some structures are used without any change. However,
     we had two independent declarations of the same structures in HFS
     and HFS+ drivers.

     The on-disk layout declarations have been moved into
     include/linux/hfs_common.h with the goal to exclude the
     declarations duplication and to keep the HFS/HFS+ on-disk layout
     declarations in one place.

     Also, this patch prepares the basis for creating a hfslib that can
     aggregate common functionality without necessity to duplicate the
     same code in HFS and HFS+ drivers.

   - HFS/HFS+ really need unit-tests because of multiple xfstests
     failures. The first two patches introduce Kunit-based unit-tests
     for the case string operations in HFS/HFS+ file system drivers"

* tag 'hfs-v6.19-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/vdubeyko/hfs:
  hfs/hfsplus: move on-disk layout declarations into hfs_common.h
  hfsplus: fix volume corruption issue for generic/101
  hfsplus: introduce KUnit tests for HFS+ string operations
  hfs: introduce KUnit tests for HFS string operations
  hfsplus: fix volume corruption issue for generic/073
  hfsplus: Verify inode mode when loading from disk
  hfsplus: fix volume corruption issue for generic/070
  hfs/hfsplus: prevent getting negative values of offset/length
  hfsplus: fix missing hfs_bnode_get() in __hfs_bnode_create
  hfs: fix potential use after free in hfs_correct_next_unused_CNID()
 2025-12-03 20:08:32 -08:00
Linus Torvalds
7696286034 Merge tag 'for-6.19-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux 
Pull btrfs updates from David Sterba:
 "Features:

   - shutdown ioctl support (needs CONFIG_BTRFS_EXPERIMENTAL for now):
      - set filesystem state as being shut down (also named going down
        in other filesystems), where all active operations return EIO
        and this cannot be changed until unmount
      - pending operations are attempted to be finished but error
        messages may still show up depending on where exactly the
        shutdown happened

   - scrub (and device replace) vs suspend/hibernate:
      - a running scrub will prevent suspend, which can be annoying as
        suspend is an immediate request and scrub is not critical
      - filesystem freezing before suspend was not sufficient as the
        problem was in process freezing
      - behaviour change: on suspend scrub and device replace are
        cancelled, where scrub can record the last state and continue
        from there; the device replace has to be restarted from the
        beginning

   - zone stats exported in sysfs, from the perspective of the
     filesystem this includes active, reclaimable, relocation etc zones

  Performance:

   - improvements when processing space reservation tickets by
     optimizing locking and shrinking critical sections, cumulative
     improvements in lockstat numbers show +15%

  Notable fixes:

   - use vmalloc fallback when allocating bios as high order allocations
     can happen with wide checksums (like sha256)

   - scrub will always track the last position of progress so it's not
     starting from zero after an error

  Core:

   - under experimental config, checksum calculations are offloaded to
     process context, simplifies locking and allows to remove
     compression write worker kthread(s):
      - speed improvement in direct IO throughput with buffered IO
        fallback is +15% when not offloaded but this is more related to
        internal crypto subsystem improvements
      - this will be probably default in the future removing the sysfs
        tunable

   - (experimental) block size > page size updates:
      - support more operations when not using large folios (encoded
        read/write and send)
      - raid56

   - more preparations for fscrypt support

  Other:

   - more conversions to auto-cleaned variables

   - parameter cleanups and removals

   - extended warning fixes

   - improved printing of structured values like keys

   - lots of other cleanups and refactoring"

* tag 'for-6.19-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: (147 commits)
  btrfs: remove unnecessary inode key in btrfs_log_all_parents()
  btrfs: remove redundant zero/NULL initializations in btrfs_alloc_root()
  btrfs: remaining BTRFS_PATH_AUTO_FREE conversions
  btrfs: send: do not allocate memory for xattr data when checking it exists
  btrfs: send: add unlikely to all unexpected overflow checks
  btrfs: reduce arguments to btrfs_del_inode_ref_in_log()
  btrfs: remove root argument from btrfs_del_dir_entries_in_log()
  btrfs: use test_and_set_bit() in btrfs_delayed_delete_inode_ref()
  btrfs: don't search back for dir inode item in INO_LOOKUP_USER
  btrfs: don't rewrite ret from inode_permission
  btrfs: add orig_logical to btrfs_bio for encryption
  btrfs: disable verity on encrypted inodes
  btrfs: disable various operations on encrypted inodes
  btrfs: remove redundant level reset in btrfs_del_items()
  btrfs: simplify leaf traversal after path release in btrfs_next_old_leaf()
  btrfs: optimize balance_level() path reference handling
  btrfs: factor out root promotion logic into promote_child_to_root()
  btrfs: raid56: remove the "_step" infix
  btrfs: raid56: enable bs > ps support
  btrfs: raid56: prepare finish_parity_scrub() to support bs > ps cases
  ...
 2025-12-03 20:03:46 -08:00
Linus Torvalds
cc25df3e2e Merge tag 'for-6.19/block-20251201' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux 
Pull block updates from Jens Axboe:

 - Fix head insertion for mq-deadline, a regression from when priority
   support was added

 - Series simplifying and improving the ublk user copy code

 - Various ublk related cleanups

 - Fixup REQ_NOWAIT handling in loop/zloop, clearing NOWAIT when the
   request is punted to a thread for handling

 - Merge and then later revert loop dio nowait support, as it ended up
   causing excessive stack usage for when the inline issue code needs to
   dip back into the full file system code

 - Improve auto integrity code, making it less deadlock prone

 - Speedup polled IO handling, but manually managing the hctx lookups

 - Fixes for blk-throttle for SSD devices

 - Small series with fixes for the S390 dasd driver

 - Add support for caching zones, avoiding unnecessary report zone
   queries

 - MD pull requests via Yu:
      - fix null-ptr-dereference regression for dm-raid0
      - fix IO hang for raid5 when array is broken with IO inflight
      - remove legacy 1s delay to speed up system shutdown
      - change maintainer's email address
      - data can be lost if array is created with different lbs devices,
        fix this problem and record lbs of the array in metadata
      - fix rcu protection for md_thread
      - fix mddev kobject lifetime regression
      - enable atomic writes for md-linear
      - some cleanups

 - bcache updates via Coly
      - remove useless discard and cache device code
      - improve usage of per-cpu workqueues

 - Reorganize the IO scheduler switching code, fixing some lockdep
   reports as well

 - Improve the block layer P2P DMA support

 - Add support to the block tracing code for zoned devices

 - Segment calculation improves, and memory alignment flexibility
   improvements

 - Set of prep and cleanups patches for ublk batching support. The
   actual batching hasn't been added yet, but helps shrink down the
   workload of getting that patchset ready for 6.20

 - Fix for how the ps3 block driver handles segments offsets

 - Improve how block plugging handles batch tag allocations

 - nbd fixes for use-after-free of the configuration on device clear/put

 - Set of improvements and fixes for zloop

 - Add Damien as maintainer of the block zoned device code handling

 - Various other fixes and cleanups

* tag 'for-6.19/block-20251201' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux: (162 commits)
  block/rnbd: correct all kernel-doc complaints
  blk-mq: use queue_hctx in blk_mq_map_queue_type
  md: remove legacy 1s delay in md_notify_reboot
  md/raid5: fix IO hang when array is broken with IO inflight
  md: warn about updating super block failure
  md/raid0: fix NULL pointer dereference in create_strip_zones() for dm-raid
  sbitmap: fix all kernel-doc warnings
  ublk: add helper of __ublk_fetch()
  ublk: pass const pointer to ublk_queue_is_zoned()
  ublk: refactor auto buffer register in ublk_dispatch_req()
  ublk: add `union ublk_io_buf` with improved naming
  ublk: add parameter `struct io_uring_cmd *` to ublk_prep_auto_buf_reg()
  kfifo: add kfifo_alloc_node() helper for NUMA awareness
  blk-mq: fix potential uaf for 'queue_hw_ctx'
  blk-mq: use array manage hctx map instead of xarray
  ublk: prevent invalid access with DEBUG
  s390/dasd: Use scnprintf() instead of sprintf()
  s390/dasd: Move device name formatting into separate function
  s390/dasd: Remove unnecessary debugfs_create() return checks
  s390/dasd: Fix gendisk parent after copy pair swap
  ...
 2025-12-03 19:26:18 -08:00
Linus Torvalds
0abcfd8983 Merge tag 'for-6.19/io_uring-20251201' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux 
Pull io_uring updates from Jens Axboe:

 - Unify how task_work cancelations are detected, placing it in the
   task_work running state rather than needing to check the task state

 - Series cleaning up and moving the cancelation code to where it
   belongs, in cancel.c

 - Cleanup of waitid and futex argument handling

 - Add support for mixed sized SQEs. 6.18 added support for mixed sized
   CQEs, improving flexibility and efficiency of workloads that need big
   CQEs. This adds similar support for SQEs, where the occasional need
   for a 128b SQE doesn't necessitate having all SQEs be 128b in size

 - Introduce zcrx and SQ/CQ layout queries. The former returns what zcrx
   features are available. And both return the ring size information to
   help with allocation size calculation for user provided rings like
   IORING_SETUP_NO_MMAP and IORING_MEM_REGION_TYPE_USER

 - Zcrx updates for 6.19. It includes a bunch of small patches,
   IORING_REGISTER_ZCRX_CTRL and RQ flushing and David's work on sharing
   zcrx b/w multiple io_uring instances

 - Series cleaning up ring initializations, notable deduplicating ring
   size and offset calculations. It also moves most of the checking
   before doing any allocations, making the code simpler

 - Add support for getsockname and getpeername, which is mostly a
   trivial hookup after a bit of refactoring on the networking side

 - Various fixes and cleanups

* tag 'for-6.19/io_uring-20251201' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux: (68 commits)
  io_uring: Introduce getsockname io_uring cmd
  socket: Split out a getsockname helper for io_uring
  socket: Unify getsockname and getpeername implementation
  io_uring/query: drop unused io_handle_query_entry() ctx arg
  io_uring/kbuf: remove obsolete buf_nr_pages and update comments
  io_uring/register: use correct location for io_rings_layout
  io_uring/zcrx: share an ifq between rings
  io_uring/zcrx: add io_fill_zcrx_offsets()
  io_uring/zcrx: export zcrx via a file
  io_uring/zcrx: move io_zcrx_scrub() and dependencies up
  io_uring/zcrx: count zcrx users
  io_uring/zcrx: add sync refill queue flushing
  io_uring/zcrx: introduce IORING_REGISTER_ZCRX_CTRL
  io_uring/zcrx: elide passing msg flags
  io_uring/zcrx: use folio_nr_pages() instead of shift operation
  io_uring/zcrx: convert to use netmem_desc
  io_uring/query: introduce rings info query
  io_uring/query: introduce zcrx query
  io_uring: move cq/sq user offset init around
  io_uring: pre-calculate scq layout
  ...
 2025-12-03 18:58:57 -08:00
Linus Torvalds
8f7aa3d3c7 Merge tag 'net-next-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next 
Pull networking updates from Jakub Kicinski:
 "Core & protocols:

   - Replace busylock at the Tx queuing layer with a lockless list.

     Resulting in a 300% (4x) improvement on heavy TX workloads, sending
     twice the number of packets per second, for half the cpu cycles.

   - Allow constantly busy flows to migrate to a more suitable CPU/NIC
     queue.

     Normally we perform queue re-selection when flow comes out of idle,
     but under extreme circumstances the flows may be constantly busy.

     Add sysctl to allow periodic rehashing even if it'd risk packet
     reordering.

   - Optimize the NAPI skb cache, make it larger, use it in more paths.

   - Attempt returning Tx skbs to the originating CPU (like we already
     did for Rx skbs).

   - Various data structure layout and prefetch optimizations from Eric.

   - Remove ktime_get() from the recvmsg() fast path, ktime_get() is
     sadly quite expensive on recent AMD machines.

   - Extend threaded NAPI polling to allow the kthread busy poll for
     packets.

   - Make MPTCP use Rx backlog processing. This lowers the lock
     pressure, improving the Rx performance.

   - Support memcg accounting of MPTCP socket memory.

   - Allow admin to opt sockets out of global protocol memory accounting
     (using a sysctl or BPF-based policy). The global limits are a poor
     fit for modern container workloads, where limits are imposed using
     cgroups.

   - Improve heuristics for when to kick off AF_UNIX garbage collection.

   - Allow users to control TCP SACK compression, and default to 33% of
     RTT.

   - Add tcp_rcvbuf_low_rtt sysctl to let datacenter users avoid
     unnecessarily aggressive rcvbuf growth and overshot when the
     connection RTT is low.

   - Preserve skb metadata space across skb_push / skb_pull operations.

   - Support for IPIP encapsulation in the nftables flowtable offload.

   - Support appending IP interface information to ICMP messages (RFC
     5837).

   - Support setting max record size in TLS (RFC 8449).

   - Remove taking rtnl_lock from RTM_GETNEIGHTBL and RTM_SETNEIGHTBL.

   - Use a dedicated lock (and RCU) in MPLS, instead of rtnl_lock.

   - Let users configure the number of write buffers in SMC.

   - Add new struct sockaddr_unsized for sockaddr of unknown length,
     from Kees.

   - Some conversions away from the crypto_ahash API, from Eric Biggers.

   - Some preparations for slimming down struct page.

   - YAML Netlink protocol spec for WireGuard.

   - Add a tool on top of YAML Netlink specs/lib for reporting commonly
     computed derived statistics and summarized system state.

  Driver API:

   - Add CAN XL support to the CAN Netlink interface.

   - Add uAPI for reporting PHY Mean Square Error (MSE) diagnostics, as
     defined by the OPEN Alliance's "Advanced diagnostic features for
     100BASE-T1 automotive Ethernet PHYs" specification.

   - Add DPLL phase-adjust-gran pin attribute (and implement it in
     zl3073x).

   - Refactor xfrm_input lock to reduce contention when NIC offloads
     IPsec and performs RSS.

   - Add info to devlink params whether the current setting is the
     default or a user override. Allow resetting back to default.

   - Add standard device stats for PSP crypto offload.

   - Leverage DSA frame broadcast to implement simple HSR frame
     duplication for a lot of switches without dedicated HSR offload.

   - Add uAPI defines for 1.6Tbps link modes.

  Device drivers:

   - Add Motorcomm YT921x gigabit Ethernet switch support.

   - Add MUCSE driver for N500/N210 1GbE NIC series.

   - Convert drivers to support dedicated ops for timestamping control,
     and away from the direct IOCTL handling. While at it support GET
     operations for PHY timestamping.

   - Add (and convert most drivers to) a dedicated ethtool callback for
     reading the Rx ring count.

   - Significant refactoring efforts in the STMMAC driver, which
     supports Synopsys turn-key MAC IP integrated into a ton of SoCs.

   - Ethernet high-speed NICs:
      - Broadcom (bnxt):
         - support PPS in/out on all pins
      - Intel (100G, ice, idpf):
         - ice: implement standard ethtool and timestamping stats
         - i40e: support setting the max number of MAC addresses per VF
         - iavf: support RSS of GTP tunnels for 5G and LTE deployments
      - nVidia/Mellanox (mlx5):
         - reduce downtime on interface reconfiguration
         - disable being an XDP redirect target by default (same as
           other drivers) to avoid wasting resources if feature is
           unused
      - Meta (fbnic):
         - add support for Linux-managed PCS on 25G, 50G, and 100G links
      - Wangxun:
         - support Rx descriptor merge, and Tx head writeback
         - support Rx coalescing offload
         - support 25G SPF and 40G QSFP modules

   - Ethernet virtual:
      - Google (gve):
         - allow ethtool to configure rx_buf_len
         - implement XDP HW RX Timestamping support for DQ descriptor
           format
      - Microsoft vNIC (mana):
         - support HW link state events
         - handle hardware recovery events when probing the device

   - Ethernet NICs consumer, and embedded:
      - usbnet: add support for Byte Queue Limits (BQL)
      - AMD (amd-xgbe):
         - add device selftests
      - NXP (enetc):
         - add i.MX94 support
      - Broadcom integrated MACs (bcmgenet, bcmasp):
         - bcmasp: add support for PHY-based Wake-on-LAN
      - Broadcom switches (b53):
         - support port isolation
         - support BCM5389/97/98 and BCM63XX ARL formats
      - Lantiq/MaxLinear switches:
         - support bridge FDB entries on the CPU port
         - use regmap for register access
         - allow user to enable/disable learning
         - support Energy Efficient Ethernet
         - support configuring RMII clock delays
         - add tagging driver for MaxLinear GSW1xx switches
      - Synopsys (stmmac):
         - support using the HW clock in free running mode
         - add Eswin EIC7700 support
         - add Rockchip RK3506 support
         - add Altera Agilex5 support
      - Cadence (macb):
         - cleanup and consolidate descriptor and DMA address handling
         - add EyeQ5 support
      - TI:
         - icssg-prueth: support AF_XDP
      - Airoha access points:
         - add missing Ethernet stats and link state callback
         - add AN7583 support
         - support out-of-order Tx completion processing
      - Power over Ethernet:
         - pd692x0: preserve PSE configuration across reboots
         - add support for TPS23881B devices

   - Ethernet PHYs:
      - Open Alliance OATC14 10BASE-T1S PHY cable diagnostic support
      - Support 50G SerDes and 100G interfaces in Linux-managed PHYs
      - micrel:
         - support for non PTP SKUs of lan8814
         - enable in-band auto-negotiation on lan8814
      - realtek:
         - cable testing support on RTL8224
         - interrupt support on RTL8221B
      - motorcomm: support for PHY LEDs on YT853
      - microchip: support for LAN867X Rev.D0 PHYs w/ SQI and cable diag
      - mscc: support for PHY LED control

   - CAN drivers:
      - m_can: add support for optional reset and system wake up
      - remove can_change_mtu() obsoleted by core handling
      - mcp251xfd: support GPIO controller functionality

   - Bluetooth:
      - add initial support for PASTa

   - WiFi:
      - split ieee80211.h file, it's way too big
      - improvements in VHT radiotap reporting, S1G, Channel Switch
        Announcement handling, rate tracking in mesh networks
      - improve multi-radio monitor mode support, and add a cfg80211
        debugfs interface for it
      - HT action frame handling on 6 GHz
      - initial chanctx work towards NAN
      - MU-MIMO sniffer improvements

   - WiFi drivers:
      - RealTek (rtw89):
         - support USB devices RTL8852AU and RTL8852CU
         - initial work for RTL8922DE
         - improved injection support
      - Intel:
         - iwlwifi: new sniffer API support
      - MediaTek (mt76):
         - WED support for >32-bit DMA
         - airoha NPU support
         - regdomain improvements
         - continued WiFi7/MLO work
      - Qualcomm/Atheros:
         - ath10k: factory test support
         - ath11k: TX power insertion support
         - ath12k: BSS color change support
         - ath12k: statistics improvements
      - brcmfmac: Acer A1 840 tablet quirk
      - rtl8xxxu: 40 MHz connection fixes/support"

* tag 'net-next-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1381 commits)
  net: page_pool: sanitise allocation order
  net: page pool: xa init with destroy on pp init
  net/mlx5e: Support XDP target xmit with dummy program
  net/mlx5e: Update XDP features in switch channels
  selftests/tc-testing: Test CAKE scheduler when enqueue drops packets
  net/sched: sch_cake: Fix incorrect qlen reduction in cake_drop
  wireguard: netlink: generate netlink code
  wireguard: uapi: generate header with ynl-gen
  wireguard: uapi: move flag enums
  wireguard: uapi: move enum wg_cmd
  wireguard: netlink: add YNL specification
  selftests: drv-net: Fix tolerance calculation in devlink_rate_tc_bw.py
  selftests: drv-net: Fix and clarify TC bandwidth split in devlink_rate_tc_bw.py
  selftests: drv-net: Set shell=True for sysfs writes in devlink_rate_tc_bw.py
  selftests: drv-net: Use Iperf3Runner in devlink_rate_tc_bw.py
  selftests: drv-net: introduce Iperf3Runner for measurement use cases
  selftests: drv-net: Add devlink_rate_tc_bw.py to TEST_PROGS
  net: ps3_gelic_net: Use napi_alloc_skb() and napi_gro_receive()
  Documentation: net: dsa: mention simple HSR offload helpers
  Documentation: net: dsa: mention availability of RedBox
  ...
 2025-12-03 17:24:33 -08:00
Linus Torvalds
015e7b0b0e Merge tag 'bpf-next-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next 
Pull bpf updates from Alexei Starovoitov:

 - Convert selftests/bpf/test_tc_edt and test_tc_tunnel from .sh to
   test_progs runner (Alexis Lothoré)

 - Convert selftests/bpf/test_xsk to test_progs runner (Bastien
   Curutchet)

 - Replace bpf memory allocator with kmalloc_nolock() in
   bpf_local_storage (Amery Hung), and in bpf streams and range tree
   (Puranjay Mohan)

 - Introduce support for indirect jumps in BPF verifier and x86 JIT
   (Anton Protopopov) and arm64 JIT (Puranjay Mohan)

 - Remove runqslower bpf tool (Hoyeon Lee)

 - Fix corner cases in the verifier to close several syzbot reports
   (Eduard Zingerman, KaFai Wan)

 - Several improvements in deadlock detection in rqspinlock (Kumar
   Kartikeya Dwivedi)

 - Implement "jmp" mode for BPF trampoline and corresponding
   DYNAMIC_FTRACE_WITH_JMP. It improves "fexit" program type performance
   from 80 M/s to 136 M/s. With Steven's Ack. (Menglong Dong)

 - Add ability to test non-linear skbs in BPF_PROG_TEST_RUN (Paul
   Chaignon)

 - Do not let BPF_PROG_TEST_RUN emit invalid GSO types to stack (Daniel
   Borkmann)

 - Generalize buildid reader into bpf_dynptr (Mykyta Yatsenko)

 - Optimize bpf_map_update_elem() for map-in-map types (Ritesh
   Oedayrajsingh Varma)

 - Introduce overwrite mode for BPF ring buffer (Xu Kuohai)

* tag 'bpf-next-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (169 commits)
  bpf: optimize bpf_map_update_elem() for map-in-map types
  bpf: make kprobe_multi_link_prog_run always_inline
  selftests/bpf: do not hardcode target rate in test_tc_edt BPF program
  selftests/bpf: remove test_tc_edt.sh
  selftests/bpf: integrate test_tc_edt into test_progs
  selftests/bpf: rename test_tc_edt.bpf.c section to expose program type
  selftests/bpf: Add success stats to rqspinlock stress test
  rqspinlock: Precede non-head waiter queueing with AA check
  rqspinlock: Disable spinning for trylock fallback
  rqspinlock: Use trylock fallback when per-CPU rqnode is busy
  rqspinlock: Perform AA checks immediately
  rqspinlock: Enclose lock/unlock within lock entry acquisitions
  bpf: Remove runqslower tool
  selftests/bpf: Remove usage of lsm/file_alloc_security in selftest
  bpf: Disable file_alloc_security hook
  bpf: check for insn arrays in check_ptr_alignment
  bpf: force BPF_F_RDONLY_PROG on insn array creation
  bpf: Fix exclusive map memory leak
  selftests/bpf: Make CS length configurable for rqspinlock stress test
  selftests/bpf: Add lock wait time stats to rqspinlock stress test
  ...
 2025-12-03 16:54:54 -08:00
Linus Torvalds
b6d993310a Merge tag 'linux_kselftest-kunit-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest 
Pull kunit updates from Shuah Khan:

 - Make filter parameters configurable via Kconfig

 - Add description of kunit.enable parameter to documentation

* tag 'linux_kselftest-kunit-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  kunit: Make filter parameters configurable via Kconfig
  Documentation: kunit: add description of kunit.enable parameter
 2025-12-03 15:50:11 -08:00
Steven Rostedt
d3042cbe84 ktest.pl: Fix uninitialized var in config-bisect.pl 
The error path of copying the old config used the wrong variable in the
error message:

 $ mkdir /tmp/build
 $ ./tools/testing/ktest/config-bisect.pl -b /tmp/build config-good /tmp/config-bad
 $ chmod 0 /tmp/build
 $ ./tools/testing/ktest/config-bisect.pl -b /tmp/build config-good /tmp/config-bad good
 cp /tmp/build//.config config-good.tmp ... [0 seconds] FAILED!
 Use of uninitialized value $config in concatenation (.) or string at ./tools/testing/ktest/config-bisect.pl line 744.
 failed to copy  to config-good.tmp

When it should have shown:

 failed to copy /tmp/build//.config to config-good.tmp

Cc: stable@vger.kernel.org
Cc: John 'Warthog9' Hawley <warthog9@kernel.org>
Fixes: 0f0db06599 ("ktest: Add standalone config-bisect.pl program")
Link: https://patch.msgid.link/20251203180924.6862bd26@gandalf.local.home
Reported-by: "John W. Krahn" <jwkrahn@shaw.ca>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
 2025-12-03 18:25:18 -05:00
Linus Torvalds
2488655b2f Merge tag 'linux_kselftest-next-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest 
Pull kselftest updates from Shuah Khan:

 - Add basic test for trace_marker_raw file to tracing selftest

 - Fix invalid array access in printf dma_map_benchmark selftest

 - Add tprobe enable/disable testcase to tracing selftest

 - Update fprobe selftest for ftrace based fprobe

* tag 'linux_kselftest-next-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  selftests: tracing: Update fprobe selftest for ftrace based fprobe
  selftests: tracing: Add tprobe enable/disable testcase
  selftests/run_kselftest.sh: exit with error if tests fail
  selftests/dma: fix invalid array access in printf
  selftests/tracing: Add basic test for trace_marker_raw file
 2025-12-03 15:08:18 -08:00
Linus Torvalds
2ddcf4962c Merge tag 'kbuild-6.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kbuild/linux 
Pull Kbuild updates from Nicolas Schier:

  - Enable -fms-extensions, allowing anonymous use of tagged struct or
    union in struct/union (tag kbuild-ms-extensions-6.19). An exemplary
    conversion patch is added here, too (btrfs).

    [ Editor's note: the core of this actually came in early through a
      shared branch and a few other trees    - Linus ]

  - Introduce architecture-specific CC_CAN_LINK and flags for userprogs

  - Add new packaging target 'modules-cpio-pkg' for building a initramfs
    cpio w/ kmods

  - Handle included .c files in gen_compile_commands

  - Minor kbuild changes:
     - Use objtree for module signing key path, fixing oot kmod signing
     - Improve documentation of KBUILD_BUILD_TIMESTAMP
     - Reuse KBUILD_USERCFLAGS for UAPI, instead of defining twice
     - Rename scripts/Makefile.extrawarn to Makefile.warn
     - Drop obsolete types.h check from headers_check.pl
     - Remove outdated config leak ignore entries

* tag 'kbuild-6.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kbuild/linux:
  kbuild: add target to build a cpio containing modules
  initramfs: add gen_init_cpio to hostprogs unconditionally
  kbuild: allow architectures to override CC_CAN_LINK
  init: deduplicate cc-can-link.sh invocations
  kbuild: don't enable CC_CAN_LINK if the dummy program generates warnings
  scripts: headers_install.sh: Remove two outdated config leak ignore entries
  scripts/clang-tools: Handle included .c files in gen_compile_commands
  kbuild: uapi: Drop types.h check from headers_check.pl
  kbuild: Rename Makefile.extrawarn to Makefile.warn
  MAINTAINERS, .mailmap: Update mail address for Nicolas Schier
  kbuild: uapi: reuse KBUILD_USERCFLAGS
  kbuild: doc: improve KBUILD_BUILD_TIMESTAMP documentation
  kbuild: Use objtree for module signing key path
  btrfs: send: make use of -fms-extensions for defining struct fs_path
 2025-12-03 14:42:21 -08:00
Linus Torvalds
784faa8eca Merge tag 'rust-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux 
Pull Rust updates from Miguel Ojeda:
 "Toolchain and infrastructure:

   - Add support for 'syn'.

     Syn is a parsing library for parsing a stream of Rust tokens into a
     syntax tree of Rust source code.

     Currently this library is geared toward use in Rust procedural
     macros, but contains some APIs that may be useful more generally.

     'syn' allows us to greatly simplify writing complex macros such as
     'pin-init' (Benno has already prepared the 'syn'-based version). We
     will use it in the 'macros' crate too.

     'syn' is the most downloaded Rust crate (according to crates.io),
     and it is also used by the Rust compiler itself. While the amount
     of code is substantial, there should not be many updates needed for
     these crates, and even if there are, they should not be too big,
     e.g. +7k -3k lines across the 3 crates in the last year.

     'syn' requires two smaller dependencies: 'quote' and 'proc-macro2'.
     I only modified their code to remove a third dependency
     ('unicode-ident') and to add the SPDX identifiers. The code can be
     easily verified to exactly match upstream with the provided
     scripts.

     They are all licensed under "Apache-2.0 OR MIT", like the other
     vendored 'alloc' crate we had for a while.

     Please see the merge commit with the cover letter for more context.

   - Allow 'unreachable_pub' and 'clippy::disallowed_names' for
     doctests.

     Examples (i.e. doctests) may want to do things like show public
     items and use names such as 'foo'.

     Nevertheless, we still try to keep examples as close to real code
     as possible (this is part of why running Clippy on doctests is
     important for us, e.g. for safety comments, which userspace Rust
     does not support yet but we are stricter).

  'kernel' crate:

   - Replace our custom 'CStr' type with 'core::ffi::CStr'.

     Using the standard library type reduces our custom code footprint,
     and we retain needed custom functionality through an extension
     trait and a new 'fmt!' macro which replaces the previous 'core'
     import.

     This started in 6.17 and continued in 6.18, and we finally land the
     replacement now. This required quite some stamina from Tamir, who
     split the changes in steps to prepare for the flag day change here.

   - Replace 'kernel::c_str!' with C string literals.

     C string literals were added in Rust 1.77, which produce '&CStr's
     (the 'core' one), so now we can write:

         c"hi"

     instead of:

         c_str!("hi")

   - Add 'num' module for numerical features.

     It includes the 'Integer' trait, implemented for all primitive
     integer types.

     It also includes the 'Bounded' integer wrapping type: an integer
     value that requires only the 'N' least significant bits of the
     wrapped type to be encoded:

         // An unsigned 8-bit integer, of which only the 4 LSBs are used.
         let v = Bounded::<u8, 4>::new::<15>();
         assert_eq!(v.get(), 15);

     'Bounded' is useful to e.g. enforce guarantees when working with
     bitfields that have an arbitrary number of bits.

     Values can also be constructed from simple non-constant expressions
     or, for more complex ones, validated at runtime.

     'Bounded' also comes with comparison and arithmetic operations
     (with both their backing type and other 'Bounded's with a
     compatible backing type), casts to change the backing type,
     extending/shrinking and infallible/fallible conversions from/to
     primitives as applicable.

   - 'rbtree' module: add immutable cursor ('Cursor').

     It enables to use just an immutable tree reference where
     appropriate. The existing fully-featured mutable cursor is renamed
     to 'CursorMut'.

  kallsyms:

   - Fix wrong "big" kernel symbol type read from procfs.

  'pin-init' crate:

   - A couple minor fixes (Benno asked me to pick these patches up for
     him this cycle).

  Documentation:

   - Quick Start guide: add Debian 13 (Trixie).

     Debian Stable is now able to build Linux, since Debian 13 (released
     2025-08-09) packages Rust 1.85.0, which is recent enough.

     We are planning to propose that the minimum supported Rust version
     in Linux follows Debian Stable releases, with Debian 13 being the
     first one we upgrade to, i.e. Rust 1.85.

  MAINTAINERS:

   - Add entry for the new 'num' module.

   - Remove Alex as Rust maintainer: he hasn't had the time to
     contribute for a few years now, so it is a no-op change in
     practice.

  And a few other cleanups and improvements"

* tag 'rust-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux: (53 commits)
  rust: macros: support `proc-macro2`, `quote` and `syn`
  rust: syn: enable support in kbuild
  rust: syn: add `README.md`
  rust: syn: remove `unicode-ident` dependency
  rust: syn: add SPDX License Identifiers
  rust: syn: import crate
  rust: quote: enable support in kbuild
  rust: quote: add `README.md`
  rust: quote: add SPDX License Identifiers
  rust: quote: import crate
  rust: proc-macro2: enable support in kbuild
  rust: proc-macro2: add `README.md`
  rust: proc-macro2: remove `unicode_ident` dependency
  rust: proc-macro2: add SPDX License Identifiers
  rust: proc-macro2: import crate
  rust: kbuild: support using libraries in `rustc_procmacro`
  rust: kbuild: support skipping flags in `rustc_test_library`
  rust: kbuild: add proc macro library support
  rust: kbuild: simplify `--cfg` handling
  rust: kbuild: introduce `core-flags` and `core-skip_flags`
  ...
 2025-12-03 14:16:49 -08:00
Linus Torvalds
51ab33fc0a Merge tag 'livepatching-for-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/livepatching/livepatching 
Pull livepatching updates from Petr Mladek:

 - Support both paths where tracefs is typically mounted in selftests

 - Make old_sympos 0 and 1 equal. They both are valid when there is only
   one symbol with the given name.

* tag 'livepatching-for-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/livepatching/livepatching:
  selftests: livepatch: use canonical ftrace path
  livepatch: Match old_sympos 0 and 1 in klp_find_func()
 2025-12-03 13:46:48 -08:00
Linus Torvalds
02baaa67d9 Merge tag 'sched_ext-for-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext 
Pull sched_ext updates from Tejun Heo:

 - Improve recovery from misbehaving BPF schedulers.

   When a scheduler puts many tasks with varying affinity restrictions
   on a shared DSQ, CPUs scanning through tasks they cannot run can
   overwhelm the system, causing lockups.

   Bypass mode now uses per-CPU DSQs with a load balancer to avoid this,
   and hooks into the hardlockup detector to attempt recovery.

   Add scx_cpu0 example scheduler to demonstrate this scenario.

 - Add lockless peek operation for DSQs to reduce lock contention for
   schedulers that need to query queue state during load balancing.

 - Allow scx_bpf_reenqueue_local() to be called from anywhere in
   preparation for deprecating cpu_acquire/release() callbacks in favor
   of generic BPF hooks.

 - Prepare for hierarchical scheduler support: add
   scx_bpf_task_set_slice() and scx_bpf_task_set_dsq_vtime() kfuncs,
   make scx_bpf_dsq_insert*() return bool, and wrap kfunc args in
   structs for future aux__prog parameter.

 - Implement cgroup_set_idle() callback to notify BPF schedulers when a
   cgroup's idle state changes.

 - Fix migration tasks being incorrectly downgraded from
   stop_sched_class to rt_sched_class across sched_ext enable/disable.
   Applied late as the fix is low risk and the bug subtle but needs
   stable backporting.

 - Various fixes and cleanups including cgroup exit ordering,
   SCX_KICK_WAIT reliability, and backward compatibility improvements.

* tag 'sched_ext-for-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext: (44 commits)
  sched_ext: Fix incorrect sched_class settings for per-cpu migration tasks
  sched_ext: tools: Removing duplicate targets during non-cross compilation
  sched_ext: Use kvfree_rcu() to release per-cpu ksyncs object
  sched_ext: Pass locked CPU parameter to scx_hardlockup() and add docs
  sched_ext: Update comments replacing breather with aborting mechanism
  sched_ext: Implement load balancer for bypass mode
  sched_ext: Factor out abbreviated dispatch dequeue into dispatch_dequeue_locked()
  sched_ext: Factor out scx_dsq_list_node cursor initialization into INIT_DSQ_LIST_CURSOR
  sched_ext: Add scx_cpu0 example scheduler
  sched_ext: Hook up hardlockup detector
  sched_ext: Make handle_lockup() propagate scx_verror() result
  sched_ext: Refactor lockup handlers into handle_lockup()
  sched_ext: Make scx_exit() and scx_vexit() return bool
  sched_ext: Exit dispatch and move operations immediately when aborting
  sched_ext: Simplify breather mechanism with scx_aborting flag
  sched_ext: Use per-CPU DSQs instead of per-node global DSQs in bypass mode
  sched_ext: Refactor do_enqueue_task() local and global DSQ paths
  sched_ext: Use shorter slice in bypass mode
  sched_ext: Mark racy bitfields to prevent adding fields that can't tolerate races
  sched_ext: Minor cleanups to scx_task_iter
  ...
 2025-12-03 13:25:39 -08:00
Linus Torvalds
8449d3252c Merge tag 'cgroup-for-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup 
Pull cgroup updates from Tejun Heo:

 - Defer task cgroup unlink until after the dying task's final context
   switch so that controllers see the cgroup properly populated until
   the task is truly gone

 - cpuset cleanups and simplifications.

   Enforce that domain isolated CPUs stay in root or isolated partitions
   and fail if isolated+nohz_full would leave no housekeeping CPU. Fix
   sched/deadline root domain handling during CPU hot-unplug and race
   for tasks in attaching cpusets

 - Misc fixes including memory reclaim protection documentation and
   selftest KTAP conformance

* tag 'cgroup-for-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup: (21 commits)
  cpuset: Treat cpusets in attaching as populated
  sched/deadline: Walk up cpuset hierarchy to decide root domain when hot-unplug
  cgroup/cpuset: Introduce cpuset_cpus_allowed_locked()
  docs: cgroup: No special handling of unpopulated memcgs
  docs: cgroup: Note about sibling relative reclaim protection
  docs: cgroup: Explain reclaim protection target
  selftests/cgroup: conform test to KTAP format output
  cpuset: remove need_rebuild_sched_domains
  cpuset: remove global remote_children list
  cpuset: simplify node setting on error
  cgroup: include missing header for struct irq_work
  cgroup: Fix sleeping from invalid context warning on PREEMPT_RT
  cgroup/cpuset: Globally track isolated_cpus update
  cgroup/cpuset: Ensure domain isolated CPUs stay in root or isolated partition
  cgroup/cpuset: Move up prstate_housekeeping_conflict() helper
  cgroup/cpuset: Fail if isolated and nohz_full don't leave any housekeeping
  cgroup/cpuset: Rename update_unbound_workqueue_cpumask() to update_isolation_cpumasks()
  cgroup: Defer task cgroup unlink until after the task is done switching out
  cgroup: Move dying_tasks cleanup from cgroup_task_release() to cgroup_task_free()
  cgroup: Rename cgroup lifecycle hooks to cgroup_task_*()
  ...
 2025-12-03 13:04:07 -08:00
Jarkko Sakkinen
09b71a58ee KEYS: trusted: Use tpm_ret_to_err() in trusted_tpm2 
Use tpm_ret_to_err() to transmute TPM return codes in trusted_tpm2.

Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@opinsys.com>
Acked-by: Stefano Garzarella <sgarzare@redhat.com>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
 2025-12-03 22:55:28 +02:00
Jarkko Sakkinen
7fcf459ac8 tpm: Use -EPERM as fallback error code in tpm_ret_to_err 
Using -EFAULT as the tpm_ret_to_err() fallback error code causes makes it
incompatible on how trusted keys transmute TPM return codes.

Change the fallback as -EPERM in order to gain compatibility with trusted
keys. In addition, map TPM_RC_HASH to -EINVAL in order to be compatible
with tpm2_seal_trusted() return values.

Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@opinsys.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
 2025-12-03 22:55:28 +02:00
Jarkko Sakkinen
faf07e611d tpm: Cap the number of PCR banks 
tpm2_get_pcr_allocation() does not cap any upper limit for the number of
banks. Cap the limit to eight banks so that out of bounds values coming
from external I/O cause on only limited harm.

Cc: stable@vger.kernel.org # v5.10+
Fixes: bcfff8384f ("tpm: dynamically allocate the allocated_banks array")
Tested-by: Lai Yi <yi1.lai@linux.intel.com>
Reviewed-by: Jonathan McDowell <noodles@meta.com>
Reviewed-by: Roberto Sassu <roberto.sassu@huawei.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@opinsys.com>
 2025-12-03 22:55:28 +02:00
Jonathan McDowell
020a0d8fea tpm: Remove tpm_find_get_ops 
tpm_find_get_ops() looks for the first valid TPM if the caller passes in
NULL. All internal users have been converted to either associate
themselves with a TPM directly, or call tpm_default_chip() as part of
their setup. Remove the no longer necessary tpm_find_get_ops().

Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Jonathan McDowell <noodles@meta.com>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
 2025-12-03 22:55:28 +02:00
Marco Crivellari
e68407b6b0 tpm: add WQ_PERCPU to alloc_workqueue users 
Currently if a user enqueues a work item using schedule_delayed_work() the
used wq is "system_wq" (per-cpu wq) while queue_delayed_work() use
WORK_CPU_UNBOUND (used when a cpu is not specified). The same applies to
schedule_work() that is using system_wq and queue_work(), that makes use
again of WORK_CPU_UNBOUND.
This lack of consistency cannot be addressed without refactoring the API.

alloc_workqueue() treats all queues as per-CPU by default, while unbound
workqueues must opt-in via WQ_UNBOUND.

This default is suboptimal: most workloads benefit from unbound queues,
allowing the scheduler to place worker threads where they’re needed and
reducing noise when CPUs are isolated.

This continues the effort to refactor workqueue APIs, which began with
the introduction of new workqueues and a new alloc_workqueue flag in:

commit 128ea9f6cc ("workqueue: Add system_percpu_wq and system_dfl_wq")
commit 930c2ea566 ("workqueue: Add new WQ_PERCPU flag")

This change adds a new WQ_PERCPU flag to explicitly request
alloc_workqueue() to be per-cpu when WQ_UNBOUND has not been specified.

With the introduction of the WQ_PERCPU flag (equivalent to !WQ_UNBOUND),
any alloc_workqueue() caller that doesn’t explicitly specify WQ_UNBOUND
must now use WQ_PERCPU.

Once migration is complete, WQ_UNBOUND can be removed and unbound will
become the implicit default.

Suggested-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Marco Crivellari <marco.crivellari@suse.com>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
 2025-12-03 22:55:28 +02:00
Stuart Yoder
6187221487 tpm_crb: add missing loc parameter to kerneldoc 
Update the kerneldoc parameter definitions for __crb_go_idle
and __crb_cmd_ready to include the loc parameter.

Signed-off-by: Stuart Yoder <stuart.yoder@arm.com>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
 2025-12-03 22:55:27 +02:00
Chu Guangqing
76b1a8aebe tpm_crb: Fix a spelling mistake 
The spelling of the word "requrest" is incorrect; it should be "request".

Signed-off-by: Chu Guangqing <chuguangqing@inspur.com>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
 2025-12-03 22:55:27 +02:00
Maurice Hieronymus
cffc934c0d selftests: tpm2: Fix ill defined assertions 
Remove parentheses around assert statements in Python. With parentheses,
assert always evaluates to True, making the checks ineffective.

Signed-off-by: Maurice Hieronymus <mhi@mailbox.org>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
 2025-12-03 22:55:27 +02:00
Linus Torvalds
2b60145734 Merge tag 'wq-for-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq 
Pull workqueue updates from Tejun Heo:

 - Rescuer affinity management: Affinity is now updated only when
   detached using wq_unbound_cpumask consistently. DISASSOCIATED workers
   also follow unbound cpumask changes to avoid breaking CPU isolation

 - Rescuer cleanups preparing for fetching work items one by one from
   pool list: Work assignment factored out, optimized to skip pwqs no
   longer needing rescue, and shutdown logic simplified

 - Unused assert_rcu_or_wq_mutex_or_pool_mutex() removed

* tag 'wq-for-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq:
  workqueue: Don't rely on wq->rescuer to stop rescuer
  workqueue: Only assign rescuer work when really needed
  workqueue: Factor out assign_rescuer_work()
  workqueue: Init rescuer's affinities as wq_unbound_cpumask
  workqueue: Let DISASSOCIATED workers follow unbound wq cpumask changes
  workqueue: Update the rescuer's affinity only when it is detached
  workqueue: Remove unused assert_rcu_or_wq_mutex_or_pool_mutex
 2025-12-03 12:50:10 -08:00
Linus Torvalds
4d38b88fd1 Merge tag 'printk-for-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux 
Pull printk updates from Petr Mladek:

 - Allow creaing nbcon console drivers with an unsafe write_atomic()
   callback that can only be called by the final nbcon_atomic_flush_unsafe().
   Otherwise, the driver would rely on the kthread.

   It is going to be used as the-best-effort approach for an
   experimental nbcon netconsole driver, see

     https://lore.kernel.org/r/20251121-nbcon-v1-2-503d17b2b4af@debian.org

   Note that a safe .write_atomic() callback is supposed to work in NMI
   context. But some networking drivers are not safe even in IRQ
   context:

     https://lore.kernel.org/r/oc46gdpmmlly5o44obvmoatfqo5bhpgv7pabpvb6sjuqioymcg@gjsma3ghoz35

   In an ideal world, all networking drivers would be fixed first and
   the atomic flush would be blocked only in NMI context. But it brings
   the question how reliable networking drivers are when the system is
   in a bad state. They might block flushing more reliable serial
   consoles which are more suitable for serious debugging anyway.

 - Allow to use the last 4 bytes of the printk ring buffer.

 - Prevent queuing IRQ work and block printk kthreads when consoles are
   suspended. Otherwise, they create non-necessary churn or even block
   the suspend.

 - Release console_lock() between each record in the kthread used for
   legacy consoles on RT. It might significantly speed up the boot.

 - Release nbcon context between each record in the atomic flush. It
   prevents stalls of the related printk kthread after it has lost the
   ownership in the middle of a record

 - Add support for NBCON consoles into KDB

 - Add %ptsP modifier for printing struct timespec64 and use it where
   possible

 - Misc code clean up

* tag 'printk-for-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux: (48 commits)
  printk: Use console_is_usable on console_unblank
  arch: um: kmsg_dump: Use console_is_usable
  drivers: serial: kgdboc: Drop checks for CON_ENABLED and CON_BOOT
  lib/vsprintf: Unify FORMAT_STATE_NUM handlers
  printk: Avoid irq_work for printk_deferred() on suspend
  printk: Avoid scheduling irq_work on suspend
  printk: Allow printk_trigger_flush() to flush all types
  tracing: Switch to use %ptSp
  scsi: snic: Switch to use %ptSp
  scsi: fnic: Switch to use %ptSp
  s390/dasd: Switch to use %ptSp
  ptp: ocp: Switch to use %ptSp
  pps: Switch to use %ptSp
  PCI: epf-test: Switch to use %ptSp
  net: dsa: sja1105: Switch to use %ptSp
  mmc: mmc_test: Switch to use %ptSp
  media: av7110: Switch to use %ptSp
  ipmi: Switch to use %ptSp
  igb: Switch to use %ptSp
  e1000e: Switch to use %ptSp
  ...
 2025-12-03 12:42:36 -08:00
Linus Torvalds
4a4e019937 Merge tag 'lkmm.2025.12.01a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu 
Pull lkmm documentation update from Paul McKenney:

 - Sort the memory-barriers.txt file's wait_event* and wait_on_bit* list
   alphabetically

* tag 'lkmm.2025.12.01a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu:
  memory-barriers.txt: Sort wait_event* and wait_on_bit* list alphabetically
 2025-12-03 12:41:00 -08:00