Commit Graph

1464442 Commits

Author SHA1 Message Date
Dave Airlie
5fb210754e amd-drm-fixes-7.2-2026-08-06:
amdgpu:
 - JPEG queue reset fixes
 - GC 12 fix
 - GMC 12.1 fixes
 - Lockdep false positive fix
 - Userq fix
 - Bounds checking fixes
 - Devcoredump fixes
 - DCN 2.0.1 fix
 - Aperture mapping fix
 - DC avmute fix
 - DC self refresh fix
 
 radeon:
 - Performance regression fix
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Merge tag 'amd-drm-fixes-7.2-2026-08-06' of https://gitlab.freedesktop.org/agd5f/linux into drm-fixes

amd-drm-fixes-7.2-2026-08-06:

amdgpu:
- JPEG queue reset fixes
- GC 12 fix
- GMC 12.1 fixes
- Lockdep false positive fix
- Userq fix
- Bounds checking fixes
- Devcoredump fixes
- DCN 2.0.1 fix
- Aperture mapping fix
- DC avmute fix
- DC self refresh fix

radeon:
- Performance regression fix

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Alex Deucher <alexander.deucher@amd.com>
Link: https://patch.msgid.link/20260806211538.994087-1-alexander.deucher@amd.com
2026-08-07 21:01:05 +10:00
Dave Airlie
0f7f5029eb drm-misc-fixes for v7.2-rc6:
- panthor & shmem helpers: Check vma range inside pmd fault handler.
 - panthor: handle empty firmware sections correctly.
 - bridge/ps8640: Forward aux transfer errors.
 - amdxdna: Improve error handling in amdxdna_insert_pages.
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Merge tag 'drm-misc-fixes-2026-08-06' of https://gitlab.freedesktop.org/drm/misc/kernel into drm-fixes

drm-misc-fixes for v7.2-rc6:
- panthor & shmem helpers: Check vma range inside pmd fault handler.
- panthor: handle empty firmware sections correctly.
- bridge/ps8640: Forward aux transfer errors.
- amdxdna: Improve error handling in amdxdna_insert_pages.

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patch.msgid.link/415659f6-5199-4078-8319-22d7529e777d@linux.intel.com
2026-08-07 20:07:36 +10:00
Dave Airlie
e9923a69ad - Fix memory leak in exec_queue_set_hang_replay_state (Michal)
- Apply RCS/CCS yield policy to SR-IOV VFs (Marcin)
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Merge tag 'drm-xe-fixes-2026-08-06' of https://gitlab.freedesktop.org/drm/xe/kernel into drm-fixes

- Fix memory leak in exec_queue_set_hang_replay_state (Michal)
- Apply RCS/CCS yield policy to SR-IOV VFs (Marcin)

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patch.msgid.link/anSESyrwICYHvZ59@intel.com
2026-08-07 11:27:28 +10:00
David Weber
8099bd0864 drm/amd/display: allow self-refresh exit while entry is blocked
amdgpu_dm_crtc_set_static_screen_optimze() maps sso_enable to the
Replay and PSR1 vsync events. allow_sr_entry is an entry gate, but the
helper currently applies it to both directions.

A non-fast update clears allow_sr_entry. During a modeset, a separate
hardware-programming event keeps self-refresh blocked while the stream
is reprogrammed. If vblank is enabled before the entry delay expires,
the ISM calls the helper with sso_enable false. The early return drops
the disable request, so the vsync events are not set.

After enough fast commits, allow_sr_entry becomes true and the
hardware-programming event can be cleared. Since the vblank reference
remains held, there is no further zero-to-one vblank transition to
restore the missing vsync events. Replay or PSR1 can then become active
while vblank is still enabled.

Gate only requests that enable static-screen optimization. Always
process disable requests so a vblank requestor keeps Replay and PSR1
blocked.

On a Phoenix system, repeated SDDM-to-VT handoffs produced stuck flips
followed by flip_done and commit-wait timeouts. The timeout was not
observed with this change applied.

Fixes: 3c108046e1 ("drm/amd/display: Add power module on Linux")
Assisted-by: Codex:gpt-5.6-sol
Assisted-by: Claude:opus-5
Signed-off-by: David Weber <weber.aulendorf@gmail.com>
Reviewed-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit bd0c009821)
Cc: stable@vger.kernel.org
2026-08-06 14:34:44 -04:00
Asad Kamal
f9e5f51549 drm/amdgpu: fix aperture iounmap skipped on device removal
amdgpu_pci_remove() calls drm_dev_unplug() before invoking the fini
routines. After drm_dev_unplug() the drm_dev_enter() guard in
amdgpu_ttm_fini() always returns false, so iounmap() for
aper_base_kaddr is silently skipped. On connected_to_cpu hardware
ioremap_cache() maps the aperture as WB; when iounmap() is skipped the
stale WB PAT entry persists. On reload IP discovery's
memremap(MEMREMAP_WC) on the same aperture range hits a WB/WC conflict,
producing an ioremap error and failing re-probe.

Remove the drm_dev_enter() guard and call iounmap() unconditionally.
The aperture mapping is plain MMIO and does not require device-presence
protection. Surprise-removal cleanup of aper_base_kaddr is already
handled unconditionally by amdgpu_device_unmap_mmio().

Fixes: 62d5f9f711 ("drm/amdgpu: Unmap MMIO mappings when device is not unplugged")
Signed-off-by: Asad Kamal <asad.kamal@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit fb3f68af9f)
Cc: stable@vger.kernel.org
2026-08-06 14:34:02 -04:00
Ray Wu
3141e3d614 drm/amd/display: Check for tg ops in dce110_set_avmute
Some older DCE timing generators do not implement is_tg_enabled in
their ops table. Calling it unconditionally when waiting for AV mute
frames causes a NULL pointer dereference on Southern Islands dGPUs
when turning the display off over HDMI.

Check that tg and the required ops exist before waiting for frames.

Fixes: 414da24137 ("drm/amd/display: Add AV mute wait frames to dce110_set_avmute")
Closes: https://gitlab.freedesktop.org/drm/amd/-/work_items/5557
Tested-by: Viktor Jägersküpper <viktor_jaegerskuepper@freenet.de>
Signed-off-by: Ray Wu <ray.wu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 2686a0c0aa)
Cc: stable@vger.kernel.org
2026-08-06 14:33:54 -04:00
Asad Kamal
b96c529cd2 Revert "drm/amdgpu: fix aperture mapping leak"
devres teardown is LIFO. The aperture devres node was registered after
the DRM device node, so devres_release_all() unmaps the aperture before
the DRM device release callback fires amdgpu_device_fini_sw(). IP
sw_fini callbacks (e.g. vcn_v4_0_sw_fini) write to fw_shared through a
pointer derived from aper_base_kaddr, causing a kernel page fault on
probe failure / rollback:

  BUG: unable to handle page fault ... PMD 0
  RIP: vcn_v4_0_sw_fini+0x7b/0x170 [amdgpu]
  Call Trace:
    amdgpu_device_fini_sw
    amdgpu_driver_release_kms
    devm_drm_dev_init_release
    devres_release_all

This reverts commit d871e99879.

Fixes: d871e99879 ("drm/amdgpu: fix aperture mapping leak")
Reported-by: Yuansheng Mao <yuansheng.mao@amd.com>
Signed-off-by: Asad Kamal <asad.kamal@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 336e0cd576)
Cc: stable@vger.kernel.org
2026-08-06 14:33:46 -04:00
Wang Jiang
5f08eee9c3 drm/radeon: restore hardware polling in fence_is_signaled to fix performance regression
Commit 527ba26e50 ("drm/radeon: delete radeon_fence_process in
is_signaled, no deadlock") removed the hardware polling from
radeon_fence_is_signaled() to fix a self-deadlock caused by
wake_up_all(&rdev->fence_queue) being called with the fence queue
lock held.

However, removing the polling entirely causes significant performance
regression (e.g. glxgears FPS drop) because the fence signaled check
becomes purely passive — it only reads the cached last_seq without
probing the GPU, so completed GPU work is not detected in time,
causing unnecessary CPU stalls in sync-heavy workloads.

Fix this by calling radeon_fence_activity() directly instead of
radeon_fence_process(). radeon_fence_activity() reads the hardware
fence counter and updates last_seq via atomic ops without calling
wake_up_all(), thus avoiding the deadlock while restoring timely
fence detection.

Fixes: 527ba26e50 ("drm/radeon: delete radeon_fence_process in is_signaled, no deadlock")
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Wang Jiang <jiangwang@kylinos.cn>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit f59ad4cca2)
Cc: stable@vger.kernel.org
2026-08-06 14:33:39 -04:00
Travis K. Bangs
ff209cd048 drm/amd: Disable DP audio spread spectrum for Cyan Skillfish
The VBIOS for Cyan Skillfish devices (DCN201) indicates there is
DisplayPort ref clock spread spectrum downspread, so the audio clock
is corrected for it.

However, the clock source in this hardware does not seem to actually be
running with a clock downspread, so DisplayPort audio desyncs with video
after several minutes.

Ignore dprefclk SS downspread on CYAN_SKILLFISH2 asic.

Closes: https://gitlab.freedesktop.org/drm/amd/-/work_items/5429
Signed-off-by: Travis K. Bangs <tbangs89@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit f3a2d86587)
Cc: stable@vger.kernel.org
2026-08-06 14:33:13 -04:00
Alex Deucher
5227c2c77c drm/amdgpu/gmc12.1: fix MMHUB0 check in pasid tlb flush
Check for mmhub0 rather than mmhub1.  Looks like a copy
paste typo.

Fixes: d0c989a0aa ("drm/amd/amdgpu : Use the MES INV_TLBS API for tlb invalidation on gfx12_1")
Cc: Shaoyun Liu <shaoyun.liu@amd.com>
Reviewed-by: Shaoyun Liu <shaoyun.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 0e8faef0aa)
Cc: stable@vger.kernel.org
2026-08-06 14:33:02 -04:00
Lijo Lazar
e40ff9840f drm/amdgpu: Allocate coredump ring buffers per ring
Allocate each ring buffer separately. A single allocation summing all
ring sizes can exceed the page allocator's MAX_ORDER limit and fail;
per-ring buffers stay small enough to satisfy. The existing allocation
style doesn't capture any ring data if the huge allocation fails.
Splitting into multiple allocations helps to capture as much data as
possible for the core dump.

A failed ring is left with a NULL buffer and skipped when formatting.

Fixes: eea85914d1 ("drm/amdgpu: save ring content before resetting the device")
Signed-off-by: Lijo Lazar <lijo.lazar@amd.com>
Assisted-by: Claude Code
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 3e8e92b789)
Cc: stable@vger.kernel.org
2026-08-06 14:32:54 -04:00
Lijo Lazar
b88a5a43c0 drm/amdgpu: Use virtual alloc during coredump
The number of rings with outstanding fences can be large, requiring a
bigger allocation. Such allocations don't need to be physically
contiguous, so use kvzalloc/kvcalloc which fall back to vmalloc when
contiguous memory isn't available. This also matches the existing
kvfree used to free these allocations.

Also guard the allocation with ring_count to avoid passing 0 size to
allocation routines.

Fixes: eea85914d1 ("drm/amdgpu: save ring content before resetting the device")
Signed-off-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 74d48bd6b7)
Cc: stable@vger.kernel.org
2026-08-06 14:32:44 -04:00
Candice Li
fd37f9dd5b drm/amdgpu: reject oversized IBs with per-ring packet limits
On GFX rings, amdgpu_cs_p2_ib() passed user-supplied ib_bytes through
to ib->length_dw without a limit, while ring_emit_ib() encodes length
into packet fields. Oversized values can corrupt adjacent control bits
and destabilize command submission.

Add a per-ring IB packet size limit helper and reject command
submissions exceeding the corresponding dword limit before IB
allocation. Use the documented 20-bit limit for GFX/compute/SDMA/VPE,
and apply the MM fallback limit for other ring types.

Signed-off-by: Candice Li <candice.li@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 7f48fa2cf6)
Cc: stable@vger.kernel.org
2026-08-06 14:32:33 -04:00
Jesse Zhang
b77a725e50 drm/amdgpu/userq: serialize queue map against GPU reset
Creating a user queue can race with a GPU reset. While recovery holds
reset_domain->sem for write, MES is unresponsive, so the ADD_QUEUE from
amdgpu_userq_map_helper() times out (-110) and an otherwise valid queue
create fails:

  amdgpu: MES(0) failed to respond to msg=ADD_QUEUE
  [drm:mes_userq_map [amdgpu]] *ERROR* Failed to map queue in HW, err (-110)
  amdgpu: [drm] *ERROR* ... Failed to map Queue
  amdgpu: [drm] *ERROR* ... Failed to create usermode queue

Take reset_domain->sem for read around the map so it runs only once MES
is back up. This mirrors amdgpu_userq_cleanup() and honors the
userq_mutex -> reset_domain->sem order; the reset path never takes
userq_mutex, so there is no deadlock.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Jesse Zhang <Jesse.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit a8e151fe62)
Cc: stable@vger.kernel.org
2026-08-06 14:32:23 -04:00
Vitaly Prosyak
384c1d907e drm/amdgpu: Fix lockdep false positive in amdgpu_lockdep_init
Move fs_reclaim_acquire() to before all lock acquisitions to eliminate
false positive circular locking dependency warning.

This is a 7.2-cycle regression fix suitable for stable backport.

v3: Address Mikhail Gavrilov technical review:
    - Clarify that fs_reclaim_acquire/release pair only REGISTERS the
      fs_reclaim lock class, does NOT create a static edge when called
      with no locks held
    - Explain that the actual fs_reclaim -> notifier_lock edge is
      established at runtime during memory reclaim -> MMU notifier path
    - Add Cc: Arunpravin PaneerSelvam

v2: Address Mikhail Gavrilov review feedback:
    - Fix author name: Michael -> Mikhail Gavrilov in all trailers
    - Add Fixes: tag to link regression to original commit
    - Add Tested-by: Mikhail Gavrilov (tested on RX 7900 XTX)

Fixes: 1d0f5838b1 ("drm/amdgpu: Add lockdep annotations for lock ordering validation")
Reported-by: Mikhail Gavrilov <mikhail.v.gavrilov@gmail.com>
Analyzed-by: Mikhail Gavrilov <mikhail.v.gavrilov@gmail.com>
Test-case-by: Mikhail Gavrilov <mikhail.v.gavrilov@gmail.com>
Tested-by: Mikhail Gavrilov <mikhail.v.gavrilov@gmail.com>
Suggested-by: Christian König <christian.koenig@amd.com>
Tested-by: Vitaly Prosyak <vitaly.prosyak@amd.com>
Cc: Christian König <christian.koenig@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Arunpravin PaneerSelvam <Arunpravin.PaneerSelvam@amd.com>
Signed-off-by: Vitaly Prosyak <vitaly.prosyak@amd.com>
Acked-by: Arunpravin Paneer Selvam <Arunpravin.PaneerSelvam@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 70a1e9849e)
Cc: stable@vger.kernel.org
2026-08-06 14:32:11 -04:00
Alex Deucher
cda6ab11c1 drm/amdgpu/gmc12.1: implement tlb inv semaphore
Needed to properly lock the interface before using it.

Cc: Sonny Jiang <sonny.jiang@amd.com>
Reviewed-by: Sonny Jiang <sonny.jiang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 8e37aa0bd5)
Cc: stable@vger.kernel.org
2026-08-06 14:32:01 -04:00
Qiang Yu
2d69604b4d drm/amdgpu: read TRUNCATE_COORD_MODE on gfx12
TA_CNTL2.TRUNCATE_COORD_MODE selects whether texture coordinate
truncation is D3D9/GL/Vulkan conformant. gfx11 reads it and reports it to
userspace via AMDGPU_IDS_FLAGS_CONFORMANT_TRUNC_COORD, but gfx12 never
read it, so the flag was always reported as 0 and userspace fell back to
the non-conformant path.

Read it in gfx_v12_0_constants_init() like gfx11 does.

Fixes: 52cb80c12e ("drm/amdgpu: Add gfx v12_0 ip block support (v6)")
Signed-off-by: Qiang Yu <Qiang.Yu@amd.com>
Reviewed-by: Marek Olšák <maraeo@gmail.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 4261cbc7b0)
Cc: stable@vger.kernel.org
2026-08-06 14:31:42 -04:00
Jesse Zhang
d2dc81ed51 drm/amdgpu: fix JPEG v5.3.0 queue reset failure in DPG mode
Like jpeg_v5_0_0, in DPG mode the ring reset path only clears the
JPEG_PG_MODE bit and never resets a hung JRBC, so the post-reset ring test
times out and the driver falls back to a full MODE1 reset.

Temporarily force the static power-gating path during the reset so the
stop/start sequence power-cycles the JPEG block (JMI soft reset + power
off/on), matching the jpeg_v4_0 reset.

Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Jesse Zhang <Jesse.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit e93659cab1)
Cc: stable@vger.kernel.org
2026-08-06 14:31:34 -04:00
Jesse Zhang
4301e60e40 drm/amdgpu: fix JPEG v4.0.5 queue reset failure in DPG mode
Like jpeg_v5_0_0, in DPG mode the ring reset path only clears the
JPEG_PG_MODE bit and never resets a hung JRBC, so the post-reset ring test
times out and the driver falls back to a full MODE1 reset.

Temporarily force the static power-gating path during the reset so the
stop/start sequence power-cycles the JPEG block (JMI soft reset + power
off/on), matching the jpeg_v4_0 reset.

Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Jesse Zhang <Jesse.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 75a308eef4)
Cc: stable@vger.kernel.org
2026-08-06 14:31:27 -04:00
Jesse Zhang
c87801f545 drm/amdgpu: fix JPEG v5.0.0 queue reset failure in DPG mode
In DPG mode jpeg_v5_0_0_ring_reset() takes the DPG stop path, which only
clears the JPEG_PG_MODE bit and never resets the JRBC. A hung ring is not
recovered: the post-reset ring test times out and the driver falls back to
a full MODE1 reset.

Temporarily force the static power-gating path during the reset so the
stop/start sequence power-cycles the JPEG block (JMI soft reset + power
off/on), matching the jpeg_v4_0 reset which has no DPG path.

Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Jesse Zhang <Jesse.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 79b3612827)
Cc: stable@vger.kernel.org
2026-08-06 14:31:13 -04:00
Christian A. Ehrhardt
e0d2b5902c drm/panthor: Check VMA boundaries for PMD mappings
When checking a different patch[1] sashiko AI pointed out that
panthor needs the same fix[2]:

In the ->huge_fault handler do not install a PMD huge page
mapping if the huge page exceeds the boundaries of the VMA.

[1] https://lore.kernel.org/lkml/20260622215718.1532689-1-lk@c--e.de/
[2] https://sashiko.dev/#/patchset/20260622215718.1532689-1-lk%40c--e.de

Cc: Boris Brezillon <boris.brezillon@collabora.com>
Cc: Steven Price <steven.price@arm.com>
Cc: Liviu Dudau <liviu.dudau@arm.com>
Fixes: 68cbf96b1e ("drm/panthor: Part ways with drm_gem_shmem_object")
Signed-off-by: Christian A. Ehrhardt <lk@c--e.de>
Reviewed-by: Steven Price <steven.price@arm.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Link: https://lore.kernel.org/lkml/20260622215718.1532689-1-lk@c--e.de/
Link: https://patch.msgid.link/20260623181942.1536598-1-lk@c--e.de
Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
2026-08-06 09:44:35 +02:00
Marcin Bernatowicz
d1643db3b0
drm/xe/uc: Apply RCS/CCS yield policy to SR-IOV VFs
VFs were missing the call to apply the global scheduling policy.
Call xe_guc_submit_enable() during vf_uc_load_hw() to ensure VFs
get the same policy enforcement as PF.

Fixes: 26caeae9fb ("drm/xe/guc: Set RCS/CCS yield policy")
Suggested-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Signed-off-by: Marcin Bernatowicz <marcin.bernatowicz@linux.intel.com>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Michal Wajdeczko <michal.wajdeczko@intel.com>
Reviewed-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Link: https://patch.msgid.link/20260709075945.1337660-1-marcin.bernatowicz@linux.intel.com
Signed-off-by: Michał Winiarski <michal.winiarski@intel.com>
(cherry picked from commit f09360e857130f7ab7f069e2421e6b4a6e502531)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2026-08-04 13:52:23 -04:00
Michał Winiarski
c5f5001617
drm/xe: Fix memory leak in exec_queue_set_hang_replay_state()
The q->replay_state is blindly overwritten, which can potentially leak
memory that was previously allocated by vmemdup_user().
Return an error if q->replay_state is not empty.

Discovered using AI-assisted static analysis confirmed by Intel Product
Security.

Reported-by: Martin Hodo <martin.hodo@intel.com>
Fixes: 1026c1a73a ("drm/xe: Implement DRM_XE_EXEC_QUEUE_SET_HANG_REPLAY_STATE")
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Link: https://patch.msgid.link/20260624111421.1258364-1-michal.winiarski@intel.com
Signed-off-by: Michał Winiarski <michal.winiarski@intel.com>
(cherry picked from commit f6b6cc1118bdbc4265fa8b3bdf8565b26f13e56e)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2026-08-04 13:52:17 -04:00
Christian A. Ehrhardt
617bbd0871 drm/shmem_helper: Check VMA boundaries for PMD mappings
In the ->huge_fault handler do not install a PMD huge page
mapping if the huge page exceeds the boundaries of the VMA.

All other ->huge_fault handlers have similar checks and the
resulting mapping will trigger a VM_BUG_ON_VMA() if it ever
reaches copy_pmd_range().

Cc: Pedro Demarchi Gomes <pedrodemargomes@gmail.com>
Cc: Boris Brezillon <boris.brezillon@collabora.com>
Cc: stable@vger.kernel.org
Fixes: fc3bbf34e6 ("drm/shmem-helper: Fix huge page mapping in fault handler")
Signed-off-by: Christian A. Ehrhardt <lk@c--e.de>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Link: https://patch.msgid.link/20260622215718.1532689-1-lk@c--e.de
Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
2026-08-04 15:51:25 +02:00
Linus Torvalds
075b74841b Linux 7.2-rc6 2026-08-02 16:24:24 -07:00
Maíra Canal
4da9474470
drm/v3d: Serialize the scheduler timeout handlers
V3D exposes several independent hardware queues (BIN, RENDER, TFU and
CSD) but has only a single, global reset. A timeout on any one queue
therefore has to stop, reset and restart the schedulers of every other
queue as well. That makes concurrent timeout handlers unsafe.

`reset_lock` was never able to make them safe, as a driver-side lock can
only cover the driver's &drm_sched_backend_ops.timedout_job callback.
The scheduler handles the timed out job and its pending list around that
callback, outside of the driver's control, so a global reset triggered
by one queue can still interfere with another queue that is in the
middle of handling a timeout of its own.

Consequently, if a reset happens in the CSD queue while a CL-intensive
application is running, the global reset stops and restarts the CL
queue's scheduler while that queue is handling a timeout of its own. As
drm_sched_stop() and drm_sched_start() subtract and add the credits of
every job sitting on the pending list of the scheduler they are called
on, and as the CL queue's handler concurrently takes its job off that
same list and puts it back, the stop and the start no longer see the
same set of jobs. The CL queue is left with more credits in flight than
its limit:

[  327.302739] ------------[ cut here ]------------
[  327.302744] WARNING: CPU: 2 PID: 43 at drivers/gpu/drm/scheduler/sched_main.c:102 drm_sched_run_job_work+0x238/0x4d0 [gpu_sched]
[  327.302884] CPU: 2 UID: 0 PID: 43 Comm: kworker/u16:1 Not tainted 6.18.39-v8-16k+ #3 PREEMPT
[  327.302889] Hardware name: Raspberry Pi 5 Model B Rev 1.0 (DT)
[  327.302893] Workqueue: v3d_bin drm_sched_run_job_work [gpu_sched]
[  327.302984] Call trace:
[  327.302987]  drm_sched_run_job_work+0x238/0x4d0 [gpu_sched] (P)
[  327.302997]  process_scheduled_works+0x180/0x3d0
[  327.303010]  worker_thread+0x268/0x3e8
[  327.303016]  kthread+0x140/0x250
[  327.303022]  ret_from_fork+0x10/0x20
[  327.303031] ---[ end trace 0000000000000000 ]---

From that point on, the credit count of the CL queue is broken, causing
a complete GPU hang and UI freeze.

The DRM scheduler already provides a mechanism to serialize the timeout
handlers of different schedulers: an ordered workqueue passed as
drm_sched_init()'s @timeout_wq parameter. By default, each scheduler
queues its timeout work on the system workqueue, which runs the handlers
concurrently. Give all of the queues a shared ordered workqueue instead,
as recommended by the DRM scheduler documentation for hardware that has
distinct queues but resets globally.

Cc: stable@vger.kernel.org # 6.15
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
Link: https://patch.msgid.link/20260728-v3d-order-global-reset-v1-1-e47be838158d@igalia.com
Signed-off-by: Maíra Canal <mcanal@igalia.com>
2026-08-02 18:39:20 -03:00
Linus Torvalds
f5a7e2ae5f RISC-V updates for v7.2-rc6
- Fix swiotlb initialization on systems where DRAM is located above
   4GiB (such as the Tenstorrent Blackhole cards)
 
 - Fix an out-of-bounds access in the memory hot-remove code that can
   occur on Sv39 and Sv48 systems
 
 - Avoid oopsing during boot if the SBI component of the unaligned
   access performance checking code loses a race against __init
   function freeing
 
 - Avoid attempting to install the debug-enabled vDSO when it shouldn't
   be built due to !CONFIG_MMU
 
 - Avoid some sparse warnings by adding missing __iomem notations
   in get_cycles{,_hi}()
 
 - Drop an unnecessary runtime warning in the SiFive errata handler
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Merge tag 'riscv-for-linus-7.2-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux

Pull RISC-V fixes from Paul Walmsley:

 - Fix swiotlb initialization on systems where DRAM is located above
   4GiB (such as the Tenstorrent Blackhole cards)

 - Fix an out-of-bounds access in the memory hot-remove code that can
   occur on Sv39 and Sv48 systems

 - Avoid oopsing during boot if the SBI component of the unaligned
   access performance checking code loses a race against __init function
   freeing

 - Avoid attempting to install the debug-enabled vDSO when it shouldn't
   be built due to !CONFIG_MMU

 - Avoid some sparse warnings by adding missing __iomem notations in
   get_cycles{,_hi}()

 - Drop an unnecessary runtime warning in the SiFive errata handler

* tag 'riscv-for-linus-7.2-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
  riscv: vdso: Only try to install vDSO when present
  riscv: mm: Fix out-of-bounds page-table walk during memory hot-remove
  riscv: drop __init from vec_check_unaligned_access_speed_all_cpus
  riscv: mm: fix SWIOTLB initialization for systems with DRAM above 4GB
  riscv/sifive: remove warning in errata
  riscv: time: Add missing __iomem in get_cycles() and get_cycles_hi()
2026-08-02 12:12:21 -07:00
Linus Torvalds
0e672789d4 s390 updates for 7.2-rc6
- Fix PCI MMIO write syscall falsely reporting success for mappings not
   valid for MMIO when MIO is unavailable by returning -EFAULT
 
 - Fix CPRB parameter buffer overflows in zcrypt CCA AES cipher and ECC
   private key conversion by rejecting oversized key tokens
 
 - Fix buffer overreads and length underflow in pkey and zcrypt CCA token
   validation by checking length fields against actual buffer sizes
 
 - Fix out of bounds permission bitmap access in zcrypt EP11 admin CPRB
   filtering on custom device nodes by using AP_DOMAINS as the limit
 
 - Fix speculative permission bitmap reads in zcrypt CCA and EP11 admin
   CPRB handling by sanitizing user controlled domain indexes
 
 - Fix sensitive key material left in zcrypt CCA clear key import buffers
   by scrubbing CPRB and temporary buffers after use
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Merge tag 's390-7.2-6' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

Pull s390 updates from Vasily Gorbik:

 - Fix PCI MMIO write syscall falsely reporting success for mappings not
   valid for MMIO when MIO is unavailable by returning -EFAULT

 - Fix CPRB parameter buffer overflows in zcrypt CCA AES cipher and ECC
   private key conversion by rejecting oversized key tokens

 - Fix buffer overreads and length underflow in pkey and zcrypt CCA
   token validation by checking length fields against actual buffer
   sizes

 - Fix out of bounds permission bitmap access in zcrypt EP11 admin CPRB
   filtering on custom device nodes by using AP_DOMAINS as the limit

 - Fix speculative permission bitmap reads in zcrypt CCA and EP11 admin
   CPRB handling by sanitizing user controlled domain indexes

 - Fix sensitive key material left in zcrypt CCA clear key import
   buffers by scrubbing CPRB and temporary buffers after use

* tag 's390-7.2-6' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390/zcrypt: Fix missing mem scrub at clear key import in cca_clr2cipherkey()
  s390/zcrypt: Close speculative mem read possibility
  s390/zcrypt: Fix wrong domain value verification with EP11 CPRBs
  s390/zcrypt: Fix buffer over-read in cca_cipher2protkey
  s390/zcrypt: Validate length for CCA ECC private key requests
  s390/zcrypt: Validate length for CCA AES cipher key requests
  s390/pci: Fix s390_pci_mmio_write syscall error return without MIO
2026-08-02 11:55:49 -07:00
Linus Torvalds
8eae6c90b7 Misc x86 fixes:
- Fix the boot-time memcmp() asm implementation's constraints
    and optimization properties (Mauricio Faria de Oliveira)
 
  - Move the 0xd0...0xd7 AMD Zen5 model range from the Zen6
    range where it mistakenly ended up (Pratik Vishwakarma)
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'x86-urgent-2026-08-02' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull misc x86 fixes from Ingo Molnar:

 - Fix the boot-time memcmp() asm implementation's constraints
   and optimization properties (Mauricio Faria de Oliveira)

 - Move the 0xd0...0xd7 AMD Zen5 model range from the Zen6
   range where it mistakenly ended up (Pratik Vishwakarma)

* tag 'x86-urgent-2026-08-02' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/CPU/AMD: Carve out a Zen5 models range
  x86/boot: Add volatile, clobbers and zero-length test in memcmp()
2026-08-02 11:44:12 -07:00
Linus Torvalds
65bfd707fd - Fix wakeups of deferred DL servers to be actually deferred
(Gabriele Monaco)
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'sched-urgent-2026-08-02' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull scheduler fix from Ingo Molnar:

 - Fix wakeups of deferred DL servers to be actually deferred (Gabriele
   Monaco)

* tag 'sched-urgent-2026-08-02' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched/deadline: Use revised wakeup rule only for running dl_server
2026-08-02 11:39:10 -07:00
Linus Torvalds
e1f05cd3fc - Fix uretprobes race that can crash the kernel (Breno Leitao)
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'perf-urgent-2026-08-02' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull uprobes fix from Ingo Molnar:

 - Fix uretprobes race that can crash the kernel (Breno Leitao)

* tag 'perf-urgent-2026-08-02' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  uprobes: Fix NULL pointer dereference in hprobe_expire()
2026-08-02 11:32:42 -07:00
Linus Torvalds
bd1dde8775 vfs-7.2-rc6.fixes
Please consider pulling these changes from the signed vfs-7.2-rc6.fixes tag.
 
 Thanks!
 Christian
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Merge tag 'vfs-7.2-rc6.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

Pull vfs fixes from Christian Brauner:
 "binfmt_misc:

   - Don't let an 'F' entry pin its own instance.

     An entry registered with 'F' opens its interpreter at registration
     time and holds that file until the entry is freed, so an entry
     nobody removes by hand is only closed once the binfmt_misc
     superblock is shut down.

     If the interpreter lives on a mount that keeps that superblock
     alive the two pin each other and the file is never closed. That's
     reachable by pointing the interpreter at the instance itself or by
     using the instance as an overlayfs lower layer, and once the mount
     namespace is gone there's nothing left to unregister through
     either.

   - Restore write access when removing an entry.

     Registering with the MISC_FMT_OPEN_FILE flag opens the interpreter
     via open_exec() which denies write access for as long as the entry
     exists, but removal only did filp_close() and never restored it.
     The inode's i_writecount stayed permanently negative and opening
     the interpreter for writing kept failing with ETXTBSY long after
     the entry was gone.

   - Use exe_file_deny_write_access() for the interpreter clone so both
     sides base their decision on the same mode.

   - Reject a flag character as the field delimiter. create_entry() pads
     the buffer with the delimiter so the field parsers terminate even
     on a truncated string, but check_special_flags() consumes flag
     characters instead of scanning for the delimiter.

     If the delimiter is itself a flag character the padding stops
     acting as a terminator and the scan keeps reading past the end of
     the allocation. Such a registration was always rejected, just only
     after the out of bounds read has already happened.

   - Don't leak the user namespace when the mount fails.

     bm_get_tree() hands its reference to get_tree_keyed() and sget_fc()
     moves it into sb->s_fs_info, but generic_shutdown_super() only
     calls ->put_super() from inside the if (sb->s_root) branch and
     bm_fill_super() can fail before either s_root or s_op is in place.

     Drop the reference in ->kill_sb() instead, which runs
     unconditionally.

  netfs:

   - Clear PG_private_2 on a copy-to-cache append failure.

   - Handle a rolling buffer allocation failure in single-object
     writeback and drop the extra folio reference
     netfs_write_folio_single() took before the append.

   - Release the previously batched readahead folios when
     rolling_buffer_load_from_ra() fails in
     netfs_prepare_read_iterator()

   - Fix the folio_queue ENOMEM in writeback by adding a mempool and
     passing gfp flags into the rolling buffer helpers.

  iomap:

   - Add a separate bio_set for iomap_split_ioend(). It can split bios
     that already come from iomap_ioend_bioset and deadlock once that
     bioset is exhausted.

  afs:

   - Set call->async for an asynchronous afs_fs_fetch_data() the way
     afs_fs_fetch_data64() already does.

   - Subtract subreq->transferred from subreq->len in
     afs_fs_fetch_data() rather than adding it.

   - Fix a UAF when sending a message"

* tag 'vfs-7.2-rc6.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
  iomap: add a separate bio_set for iomap_split_ioend
  binfmt_misc: don't leak the user namespace when the mount fails
  binfmt_misc: reject a flag character as the field delimiter
  binfmt_misc: use exe_file_deny_write_access() for the interpreter clone
  binfmt_misc: restore write access when removing an entry
  binfmt_misc: don't let an 'F' entry pin its own instance
  netfs: Fix folio_queue ENOMEM in writeback by adding a mempool
  netfs: release readahead folios on iterator preparation failure
  netfs: handle single writeback rolling buffer allocation failure
  netfs: clear PG_private_2 on copy-to-cache append failure
  afs: Fix UAF when sending a message
  afs: Fix afs_fs_fetch_data() to subtract transferred from len
  afs: Fix afs_fs_fetch_data() to set call->async
2026-08-02 10:12:21 -07:00
Linus Torvalds
a84c804215 SCSI fixes on 20260802
No core changes.  The largest driver fix is the reversion of threaded
 interrupt handlers in UFS and the next is the resume deadlock fix in
 hisi_sas which extends into libsas.
 
 Signed-off-by: James E.J. Bottomley <James.Bottomley@HansenPartnership.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI fixes from James Bottomley"
 "No core changes. The largest driver fix is the reversion of threaded
  interrupt handlers in UFS and the next is the resume deadlock fix in
  hisi_sas which extends into libsas"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: ufs: core: Initialize hba->rpmbs list in ufshcd
  scsi: mpi3mr: Fix potential deadlock in mpi3mr_fault_uevent_emit
  scsi: target: Clear cmd_cnt when initial counter enrollment fails
  scsi: zfcp: Fix memory leak during adapter release by destroying gid_pn_req
  scsi: ufs: core: Revert "Delegate the interrupt service routine to a threaded IRQ handler"
  scsi: ufs: core: Cancel RTC work in active-active suspend
  scsi: scsi_debug: Fix REPORT ZONES alloc_len underflow OOB write
  scsi: target: iblock: Fix wrong PR ops NULL check for PREEMPT/RELEASE
  scsi: ufs: dt-bindings: Add missing mcq reg for qcom,sa8255p-ufshc
  scsi: libsas: Fix HA resume deadlock and hisi_sas disk-wake race
  scsi: libiscsi_tcp: Bound SCSI Response data segment to the connection buffer
  scsi: libiscsi: Fix stale-data leak into the SCSI sense buffer
2026-08-02 09:32:07 -07:00
Linus Torvalds
49c9f4657b dmaengine fixes for v7.2
Bunch of driver fixes for:
  - switchtec fix for register programming
  - sun6i descriptor reclaim fix
  - Couple of Intel idxd fixes for double free in error and setup failure
  - Qualcomm bam dma command element fix
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Merge tag 'dmaengine-fix-7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine

Pull dmaengine fixes from Vinod Koul:

 - switchtec fix for register programming

 - sun6i descriptor reclaim fix

 - Intel idxd fixes for double free in error and setup failure

 - Qualcomm bam dma command element fix

* tag 'dmaengine-fix-7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine:
  dmaengine: qcom: bam_dma: Fix command element mask field for BAM v1.6.0+
  dmaengine: idxd: fix fdev setup failure cleanup in idxd_cdev_open()
  dmaengine: idxd: fix double free of wq, engine, and group structs
  dmaengine: sun6i-dma: Fix reclaim descriptors while terminating DMA
  dmaengine: switchtec-dma: fix FIELD_GET misuse when programming SE threshold
2026-08-02 09:19:40 -07:00
Linus Torvalds
40814468ee phy fixes for 7.2
Couple of driver fixes
  - Couple of zynqmp clock and pm error handling and SERDES scrambler
    register handling
  - Rockchip SSC spread fix
  - Qualcomm musb return call fix
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Merge tag 'phy-fixes-7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/phy/linux-phy

Pull phy fixes from Vinod Koul:

 - fixes for zynqmp clock and pm error handling and SERDES scrambler
   register handling

 - Rockchip SSC spread fix

 - Qualcomm musb return call fix

* tag 'phy-fixes-7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/phy/linux-phy:
  phy: zynqmp: keep SERDES scrambler and 8b/10b enabled for USB
  phy: zynqmp: use read-modify-write for SERDES scrambler bypass
  phy: zynqmp: fix L0_TM_DISABLE_SCRAMBLE_ENCODER mask
  phy: zynqmp: fix runtime PM leak on probe allocation failure
  phy: zynqmp: fix clock error handling in xpsgtr_phy_init()
  phy: rockchip: naneng-combphy: Always configure SSC spread direction
  phy: qcom: m31-eusb2: Fix return value of init call
2026-08-02 09:16:32 -07:00
Linus Torvalds
2d2338c93d i2c-fixes for v7.2-rc6
- amd-mp2: unregister callback if adapter registration fails
 - designware: defer probe until child GPIO controllers are bound
 - imx:
   - mark adapter suspended while hardware is powered down
   - fix stale slave pointer and shared IRQ registration race
   - stop slave timer before clearing slave pointer
 - iproc: reset controller if START_BUSY remains set after timeout
 - jz4780: cache clock rate to avoid clk_get_rate() deadlock
 - qcom-cci: rely on runtime PM helpers for system sleep
 - spacemit: request interrupt after clock initialization
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Merge tag 'i2c-fixes-7.2-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/andi.shyti/linux

Pull i2c fixes from Andi Shyti:
 "A set of fixes across several host controller drivers. The largest
  part addresses three issues in the i.MX driver, while the remaining
  changes fix probe ordering, power management, timeout recovery and
  error handling.

  amd-mp2:
   - unregister callback if adapter registration fails

  designware:
   - defer probe until child GPIO controllers are bound

  imx:
   - mark adapter suspended while hardware is powered down
   - fix stale slave pointer and shared IRQ registration race
   - stop slave timer before clearing slave pointer

  iproc:
   - reset controller if START_BUSY remains set after timeout

  jz4780:
   - cache clock rate to avoid clk_get_rate() deadlock

  qcom-cci:
   - rely on runtime PM helpers for system sleep

  spacemit:
   - request interrupt after clock initialization"

* tag 'i2c-fixes-7.2-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/andi.shyti/linux:
  i2c: qcom-cci: drop custom suspend/resume and rely on runtime PM helpers
  i2c: imx: Cancel hrtimer before clearing slave pointer
  i2c: imx: Fix slave registration race and error handling
  i2c: iproc: reset bus after timeout if START_BUSY is stuck
  i2c: imx: mark I2C adapter when hardware is powered down
  i2c: designware: defer probe if child GpioInt controllers are not bound
  i2c: jz4780: Cache host clock rate at probe to prevent CCF prepare_lock deadlock
  i2c: amd-mp2: Unregister callback on adapter add failure
  i2c: spacemit: request IRQ after controller initialization
2026-08-01 09:02:45 -07:00
Lizhi Hou
4a19f7ab59 accel/amdxdna: Fix locally exploitable BUG_ON in amdxdna_insert_pages()
In amdxdna_insert_pages(), vm_flags_mod() sets VM_MIXEDMAP and clears
VM_PFNMAP. If an unprivileged userspace process mmaps a non-imported GEM
object and then calls madvise(MADV_DONTNEED), the PTEs will be
successfully cleared because VM_MIXEDMAP allows this (unlike VM_PFNMAP).

When userspace subsequently accesses the memory, drm_gem_shmem_fault()
handles the page fault and attempts to map the backing shmem page via
vmf_insert_pfn() which calls vmf_insert_pfn_prot(). Because the backing
shmem page is normal system memory (pfn_valid(pfn) is true) and the VMA
now has VM_MIXEDMAP set, won't this predictably trigger the explicit
assertion BUG_ON((vma->vm_flags & VM_MIXEDMAP) && pfn_valid(pfn))

Fix by removing the vm_flags_mod() call and replacing the vm_insert_pages()
pre-population with the handle_mm_fault() loop that was already used for
the import (dma-buf) path.

Fixes: e486147c91 ("accel/amdxdna: Add BO import and export")
Reviewed-by: Max Zhen <max.zhen@amd.com>
Signed-off-by: Lizhi Hou <lizhi.hou@amd.com>
Link: https://patch.msgid.link/20260731185955.3449311-1-lizhi.hou@amd.com
2026-07-31 22:40:29 -07:00
Linus Torvalds
02dc699f83 First round of Kbuild fixes for 7.2
- Fix regression with MO= when building out of tree kernel modules due
   to incorrectly overwriting build tree's Makefile
 
 - Avoid stripping .BTF sections from modules when building debug .rpm
   packages
 
 Signed-off-by: Nathan Chancellor <nathan@kernel.org>
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Merge tag 'kbuild-fixes-7.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kbuild/linux

Pull Kbuild fixes from Nathan Chancellor:

 - Fix regression with MO= when building out of tree kernel modules due
   to incorrectly overwriting build tree's Makefile

 - Avoid stripping .BTF sections from modules when building debug .rpm
   packages

* tag 'kbuild-fixes-7.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kbuild/linux:
  kbuild: rpm-pkg: Preserve BTF sections in kernel modules during debuginfo stripping
  kbuild: Stop modifying $(objtree)/Makefile when building oot-kmods oos
2026-07-31 20:45:28 -07:00
Linus Torvalds
2aa6a5e889 tracing fixes for v7.2:
- Reset dropped_count in mmio_reset_data()
 
   When mmio_reset_data() is called, it does not reset the dropped_count
   so that subsequent runs will have incorrect reporting.
 
 - Add NULL check for mmio_trace_array in logging functions
 
   The functions __trace_mmiotrace_rw() and __trace_mmiotrace_map()
   may have the 'tr' variable passed to it as NULL. But they both
   dereference it without checking if it is NULL first.
 
 - Check return value of __register_event() in trace_module_add_events()
 
   If __register_event() fails, the call after it (__add_event_to_tracers())
   will create a file for it. If the module fails to load and its memory
   is freed, the file will still point to it and it will not be removed
   as the registering of the event did not complete. Only call
   __add_event_to_tracers() if the __register_event() was successful.
 
 - Fix false positive match in regex_match_full()
 
   The regex full matching uses a strncmp() to test against the match
   string and the value. It should not match if value is a prefix of
   the string to match. Check to make sure the length of the strings
   match before comparing.
 
 - Fix reader page read offset for remote buffers
 
   A page swapped in by __rb_get_reader_page_from_remote() retains its
   stale read offset, causing subsequent reads to skip events or read
   past valid data.
 
 - Fix memory leak of subbuf_ids in rb_allocate_cpu_buffer()
 
   Remote buffers allocate a subbuf_ids array. If the allocator function
   fails after it is allocated, it does not free it, resulting in a
   memory leak.
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Merge tag 'trace-v7.2-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace

Pull tracing fixes from Steven Rostedt:

 - Reset dropped_count in mmio_reset_data()

   When mmio_reset_data() is called, it does not reset the dropped_count
   so that subsequent runs will have incorrect reporting.

 - Add NULL check for mmio_trace_array in logging functions

   The functions __trace_mmiotrace_rw() and __trace_mmiotrace_map() may
   have the 'tr' variable passed to it as NULL. But they both
   dereference it without checking if it is NULL first.

 - Check return value of __register_event() in trace_module_add_events()

   If __register_event() fails, the __add_event_to_tracers() call after
   it will create a file for it. If the module fails to load and its
   memory is freed, the file will still point to it and it will not be
   removed as the registering of the event did not complete.

   Only call __add_event_to_tracers() if the __register_event() was
   successful.

 - Fix false positive match in regex_match_full()

   The regex full matching uses a strncmp() to test against the match
   string and the value. It should not match if value is a prefix of the
   string to match. Check to make sure the length of the strings match
   before comparing.

 - Fix reader page read offset for remote buffers

   A page swapped in by __rb_get_reader_page_from_remote() retains its
   stale read offset, causing subsequent reads to skip events or read
   past valid data.

 - Fix memory leak of subbuf_ids in rb_allocate_cpu_buffer()

   Remote buffers allocate a subbuf_ids array. If the allocator function
   fails after it is allocated, it does not free it, resulting in a
   memory leak.

* tag 'trace-v7.2-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
  ring-buffer: Fix subbuf_ids memory leak in rb_allocate_cpu_buffer() error path
  ring-buffer: Fix reader page read offset for remote buffers
  tracing/filters: Fix false positive match in regex_match_full()
  tracing: Check return value of __register_event() in trace_module_add_events()
  tracing/mmiotrace: Add NULL check for mmio_trace_array in logging functions
  tracing/mmiotrace: Reset dropped_count in mmio_reset_data()
2026-07-31 20:24:11 -07:00
Linus Torvalds
0131b508c0 Description for this pull request:
- Keep RECALL_ON_OPEN in inode flags when reloading them from $FILE_NAME.
  - Check runlist reallocation sizes for negative values and overflow.
  - Drop stale page cache after shrinking non-resident attributes to prevent
    writeback failures and data loss.
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Merge tag 'ntfs-for-7.2-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/linkinjeon/ntfs

Pull ntfs fixes from Namjae Jeon:

 - Keep RECALL_ON_OPEN in inode flags when reloading them from
   $FILE_NAME

 - Check runlist reallocation sizes for negative values and overflow

 - Drop stale page cache after shrinking non-resident attributes to
   prevent writeback failures and data loss

* tag 'ntfs-for-7.2-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/linkinjeon/ntfs:
  ntfs: drop stale page-cache when shrinking a non-resident attr
  ntfs: harden runlist realloc size calculations
  ntfs: preserve RECALL_ON_OPEN on WSL special-file reparse points
2026-07-31 17:47:48 -07:00
Linus Torvalds
bc29fe1c61 three ksmbd server fixes
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Merge tag 'v7.2-rc5-smb3-server-fixes' of git://git.samba.org/ksmbd

Pull smb server fixes from Steve French:

 - Use memcmp() when comparing fixed-size binary ClientGUIDs, so
   embedded NUL bytes are handled correctly

 - Reject repeated SMB2 NEGOTIATE requests after dialect selection

   This prevents preauth_info leaks, enforces the SMB2 protocol
   requirements, and serializes negotiation state updates.

 - Fix a use-after-free in __close_file_table_ids() by removing the
   volatile file ID from the owning IDR before dropping the IDR
   reference

* tag 'v7.2-rc5-smb3-server-fixes' of git://git.samba.org/ksmbd:
  ksmbd: use memcmp() to compare ClientGUIDs
  ksmbd: reject repeated SMB2 NEGOTIATE requests
  ksmbd: fix use-after-free in __close_file_table_ids()
2026-07-31 17:35:17 -07:00
Linus Torvalds
f30ca2ce7d ata fixes for 7.2-rc6
- Fix PCI resource initialization in the sata_mv driver to keep legacy
    Marvell boards functional (Rosen).
 
  - Fix ahci_ceva driver initialization error path (Radhey).
 
  - Fix libata header file to remove a kernel doc compilation warning
    (Randy).
 
  - Increase the timeout for the STANDBY IMMEDIATE command to avoid
    suspend failures with drives that are slow to respond to this command
    (Matt).
 
  - Fixes for the handling of timed out commands in the presence of
    deferred non-NCQ commands, to avoid excessive delays in executing the
    error handler (me).
 
  - Disable link power management for a couple of WD drives that have
    been identified as not functioning properly when power management is
    used (Niklas).
 
  - Fix the device iteration loop when checking for link power management
    support to correctly handle port multiplier setups (Niklas).
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Merge tag 'ata-7.2-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/libata/linux

Pull ata fixes from Damien Le Moal:

 - Fix PCI resource initialization in the sata_mv driver to keep legacy
   Marvell boards functional (Rosen)

 - Fix ahci_ceva driver initialization error path (Radhey)

 - Fix libata header file to remove a kernel doc compilation warning
   (Randy)

 - Increase the timeout for the STANDBY IMMEDIATE command to avoid
   suspend failures with drives that are slow to respond to this command
   (Matt)

 - Fixes for the handling of timed out commands in the presence of
   deferred non-NCQ commands, to avoid excessive delays in executing the
   error handler (me)

 - Disable link power management for a couple of WD drives that have
   been identified as not functioning properly when power management is
   used (Niklas)

 - Fix the device iteration loop when checking for link power management
   support to correctly handle port multiplier setups (Niklas)

* tag 'ata-7.2-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/libata/linux:
  ata: libata-sata: fix ata_scsi_lpm_supported() iteration
  ata: libata-core: Disable LPM on WD Green 2.5 480GB
  ata: libata-core: Disable LPM on some WD drives
  scsi: libsas: terminate deferred commands on time out
  ata: libata-scsi: schedule deferred atapi command
  ata: libata-scsi: terminate deferred commands on time out
  ata: libata-eh: Increase STANDBY IMMEDIATE timeout
  ata: libata: avoid kernel-doc warnings
  ata: ahci_ceva: fix error paths in ceva_ahci_platform_enable_resources()
  ata: sata_mv: accept 1 or 2 resources in platform probe
2026-07-31 17:05:13 -07:00
Masami Hiramatsu (Google)
260b20d9b7 ring-buffer: Fix subbuf_ids memory leak in rb_allocate_cpu_buffer() error path
In rb_allocate_cpu_buffer(), cpu_buffer->subbuf_ids is allocated using
kcalloc() when buffer->remote is non-NULL. If a subsequent page allocation
fails (e.g., ring_buffer_desc_page() returns NULL or rb_allocate_pages()
fails), execution jumps to fail_free_reader.

While __free(kfree) automatically frees the outer cpu_buffer structure
at scope exit, kfree(cpu_buffer) does not recursively free nested heap
pointers such as cpu_buffer->subbuf_ids, resulting in a memory leak.

Fix this by explicitly freeing cpu_buffer->subbuf_ids in the
fail_free_reader error unwinding path when cpu_buffer->remote is set.

Link: https://patch.msgid.link/178550740672.380917.6067449683620196150.stgit@devnote2
Fixes: 2e67fabd8b ("ring-buffer: Introduce ring-buffer remotes")
Assisted-by: Antigravity:gemini-3.6-flash
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Reviewed-by: Vincent Donnefort <vdonnefort@google.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2026-07-31 19:48:27 -04:00
Linus Torvalds
f01618fd79 block-7.2-20260731
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Merge tag 'block-7.2-20260731' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux

Pull block fixes from Jens Axboe:

 - A set of fixes for s390/dasd, via Stefan

 - Fix for a missing stop of the timeout timer, if a disk has never been
   added

 - Clear kernel owned fields on ublk setup by default

* tag 'block-7.2-20260731' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux:
  s390/dasd: Fix undersized format-check buffer
  s390/dasd: Fix potential NULL pointer dereference
  s390/dasd: Fix path verification interrupted by concurrent dasd_sleep_on_immediatly
  block: stop the timeout timer when releasing a never added disk
  ublk: reset kernel-owned dev_info fields in ublk_ctrl_add_dev()
2026-07-31 16:42:34 -07:00
Linus Torvalds
5d0c32d6ec io_uring-7.2-20260731
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Merge tag 'io_uring-7.2-20260731' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux

Pull io_uring fixes from Jens Axboe:

 - Fix for a bug in how length caps are handled in multishot, and along
   with it, a generic fix for avoiding these kinds of conversion issues
   in the future.

 - Ensure that task restrictions are always preserved across exec.

 - Revert of the io_uring controlled epoll restriction, which disallowed
   nested contexts. Turns out that libuv is already using it like that,
   so we cannot simply remove it, sadly.

 - Fix for a reference leak in the zcrx code.

* tag 'io_uring-7.2-20260731' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux:
  io_uring: preserve task restrictions across exec
  io_uring/zcrx: don't clear master_ctx from the import path
  Revert "io_uring/epoll: disallow adding an epoll file to an epoll context"
  io_uring/kbuf: cap buffer selection length at MAX_RW_COUNT
  io_uring/net: initialize mshot_len for send
2026-07-31 16:14:19 -07:00
Linus Torvalds
680d49d84c drm fixes for 7.2-rc6
dp:
 - Restrict some DP bandwidth calculations to HDMI DFP.
 
 bridge:
 - Fix small leak in bridge/display-connector
 
 mediatek:
 - Check CRTC state before freeing
 - mtk_hdmi: Fix DDC adapter double put in v2
 - mtk_hdmi_common: take i2c adapter module reference
 - mtk_dsi: Enable HS clock only at pre-enable
 - ovl_adaptor: balance component registrations
 
 amdgpu:
 - VCN 5.3 fix
 - UserQ fixes
 - GEM close optimization
 - HDMI AV mute fix
 - UML build fixes
 - GFXOFF residency metrics fixes
 - SMU 15 fixes
 - debug_vm fix
 - PSP 15 fixes
 - NBIO 7.11.5 fix
 - pptable use after free fix
 - gpu metrics fetch fix
 - DC viewport fix
 - DML2.1 fix
 - i2c retimer spam fix
 - UMD profile pstate fix
 - Power metrics format cleanup
 - GTT size fix on APUs
 - DC context logging fix
 - PM sysfs fix for APUs
 - Follow on pageflip timeout fix
 
 amdkfd:
 - Various bounds checking fixes
 - Mutex locking fix
 
 i915/xe:
 - Check no-DMA huge-pte cases before DMA segment test
 - sink FRL rate fix
 - 200ms fix for TMDS scrambler status
 
 vmwgfx:
 - Improve various size checks and limit checks.
 - Fix oops when submitting  invalid execbuf ioctl.
 - Correctly lock in vmfwgx fence signaling path.
 - More validation of execbuf ioctl.
 - Fix oops in vmwgfx vkms init failure path.
 - Overflow handling in shader path.
 
 panthor:
 - Improve firmware validation
 
 imagination:
 - Improve imagination trace points.
 
 qaic:
 - Fix QAIC transaction length check.
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Merge tag 'drm-fixes-2026-08-01' of https://gitlab.freedesktop.org/drm/kernel

Pull drm fixes from Dave Airlie:
 "Weekly pulls request. As expected there is more AMD this week since
  Alex was off last week, vmwgfx looks to have been hit with the AI
  stick a bit and mediatek as well. Otherwise some minor fixes across
  the board, the new normal definitely seems to be a thing.

  dp:
   - Restrict some DP bandwidth calculations to HDMI DFP

  bridge:
   - Fix small leak in bridge/display-connector

  mediatek:
   - Check CRTC state before freeing
   - mtk_hdmi: Fix DDC adapter double put in v2
   - mtk_hdmi_common: take i2c adapter module reference
   - mtk_dsi: Enable HS clock only at pre-enable
   - ovl_adaptor: balance component registrations

  amdgpu:
   - VCN 5.3 fix
   - UserQ fixes
   - GEM close optimization
   - HDMI AV mute fix
   - UML build fixes
   - GFXOFF residency metrics fixes
   - SMU 15 fixes
   - debug_vm fix
   - PSP 15 fixes
   - NBIO 7.11.5 fix
   - pptable use after free fix
   - gpu metrics fetch fix
   - DC viewport fix
   - DML2.1 fix
   - i2c retimer spam fix
   - UMD profile pstate fix
   - Power metrics format cleanup
   - GTT size fix on APUs
   - DC context logging fix
   - PM sysfs fix for APUs
   - Follow on pageflip timeout fix

  amdkfd:
   - Various bounds checking fixes
   - Mutex locking fix

  i915/xe:
   - Check no-DMA huge-pte cases before DMA segment test
   - sink FRL rate fix
   - 200ms fix for TMDS scrambler status

  vmwgfx:
   - Improve various size checks and limit checks
   - Fix oops when submitting  invalid execbuf ioctl
   - Correctly lock in vmfwgx fence signaling path
   - More validation of execbuf ioctl
   - Fix oops in vmwgfx vkms init failure path
   - Overflow handling in shader path

  panthor:
   - Improve firmware validation

  imagination:
   - Improve imagination trace points.

  qaic:
   - Fix QAIC transaction length check"

* tag 'drm-fixes-2026-08-01' of https://gitlab.freedesktop.org/drm/kernel: (59 commits)
  drm/i915/hdmi: Poll for 200 msec for TMDS_Scrambler_Status
  drm/amd/display: Exit idle optimizations before programming
  drm/amd/pm: hide pp_table sysfs on APUs
  accel/qaic: use sizeof(*trans_hdr) for transaction length check
  drm/panthor: validate firmware interface structure sizes
  drm/xe/pt: check no-DMA huge-pte cases before DMA segment test
  drm/imagination: Update the trace point pvr_job_submit_fw()
  drm/i915/dp: Ignore the sink's DSC max FRL rate without a PCON DSC encoder
  drm/mediatek: ovl_adaptor: balance component registrations
  drm/mediatek: mtk_dsi: Enable HS clock only at pre-enable
  drm/dp: Read the PCON max FRL bandwidth only for HDMI DFPs
  drm/amd/display: use proper context for logging
  drm/amdgpu: cap GTT size to physical RAM on APUs
  drm/amd/pm: use milliwatts for GPU power sensors
  drm/amdgpu: restore UMD profile pstate after runtime resume
  drm/amd/display: Silence link_dpms I2C retimer failures
  drm/amdkfd: hold event_mutex while checkpointing CRIU events
  drm/amd/display: check if dml21_add_phantom_plane() is successful
  drm/amd/display: Fix divide-by-zero in calculate_mcache_setting on zero viewport
  drm/amd/display: Add AV mute wait frames to dce110_set_avmute
  ...
2026-07-31 15:47:45 -07:00
Linus Torvalds
a2cf4ef331 Devicetree fixes for v7.2, part 1:
- Fix NULL bus dereference in of_pci_range_parser_one()
 
 - Prevent OOB access when too many dynamic reserved memory regions are
   defined
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Merge tag 'devicetree-fixes-for-7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux

Pull devicetree fixes from Rob Herring:

 - Fix NULL bus dereference in of_pci_range_parser_one()

 - Prevent out-of-bounds access when too many dynamic reserved memory
   regions are defined

* tag 'devicetree-fixes-for-7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
  of/address: Fix NULL bus dereference in of_pci_range_parser_one()
  of: reserved_mem: prevent OOB when too many dynamic regions are defined
2026-07-31 14:03:19 -07:00
Linus Torvalds
de8c3b8e05 Hyper-V fixes for v7.2
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Merge tag 'hyperv-fixes-signed-20260731' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux

Pull hyper-v fixes from Wei Liu:

 - Multiple fixes for the MSHV driver (Stanislav Kinsburskii, Wei Liu,
   Yi Xie, Yousef Alhouseen)

 - Multiple fixes for the VMBus driver (Hardik Garg, Michael Kelley,
   Sebastian Andrzej Siewior)

* tag 'hyperv-fixes-signed-20260731' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux:
  mshv_vtl: bounds-check cpu index in vtl mmap fault handler
  mshv: Publish VP to pt_vp_array before installing the file descriptor
  Drivers: hv: vmbus: add VTL2 redirect connection ID
  mshv: Order pt_vp_array publish against irqfd assertion path
  mshv: Fix missing error code on VP allocation failure
  mshv: Fix level-triggered check on uninitialized data
  mshv: Fix race in mshv_irqfd_deassign
  mshv: Use kfree_rcu in mshv_portid_free
  mshv: Fix sleeping under spinlock in mshv_portid_alloc
  mshv: Fix duplicate GSI detection for GSI 0
  Drivers: hv: vmbus: Remove vmbus_irq_initialized
  Drivers: hv: vmbus: Replace lockdep_hardirq_threaded() with lockdep annotation
  mshv_vtl: fix fd leak in mshv_ioctl_create_vtl()
  mshv_vtl: clear hypercall output before copyout
  Drivers: hv: vmbus: Set DMA coherent mask for VMBus devices
  mshv: fix hv_input_get_system_property struct
2026-07-31 13:37:41 -07:00
Linus Torvalds
ce6ce829c8 RTLA fixes for v7.2
- Fix timerlat top actions triggering on signal
 
   Fix a bug in RTLA's timerlat top actions feature where on-threshold
   actions are triggered on any signal, regardless of whether a latency
   spike had actually occurred during the measurement.
 
   The return retval was checked for non-zero to do actions. But if a
   signal came in, it returns a negative and actions were being
   incorrectly triggered when they should not have been.
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Merge tag 'trace-tools-v7.2-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace

Pull RTLA fix from Steven Rostedt:

 - Fix timerlat top actions triggering on signal

   Fix a bug in RTLA's timerlat top actions feature where on-threshold
   actions are triggered on any signal, regardless of whether a latency
   spike had actually occurred during the measurement.

   The return retval was checked for non-zero to do actions. But if a
   signal came in, it returns a negative and actions were being
   incorrectly triggered when they should not have been.

* tag 'trace-tools-v7.2-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
  rtla/timerlat_top: Fix on-threshold actions firing on signal
2026-07-31 13:25:45 -07:00
Yi Xie
22dfdc17ce mshv_vtl: bounds-check cpu index in vtl mmap fault handler
cpu is taken from pgoff & 0xffff.  cpu_online() does not reject cpu >=
nr_cpu_ids, and per_cpu_ptr() can then walk off __per_cpu_offset.

Signed-off-by: Yi Xie <xieyi@kylinos.cn>
Reviewed-by: Naman Jain <namjain@linux.microsoft.com>
Signed-off-by: Wei Liu <wei.liu@kernel.org>
2026-07-31 20:02:04 +00:00