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There is a real deadlock as well as sleeping in atomic() bug in here, if
the bo put happens to be the last ref, since bo destruction wants to
grab the same spinlock and sleeping locks. Fix that by dropping the ref
using xe_bo_put_deferred(), and moving the final commit outside of the
lock. Dropping the lock around the put is tricky since the bo can go
out of scope and delete itself from the list, making it difficult to
navigate to the next list entry.
Fixes: 0845233388f8 ("drm/xe: Implement fdinfo memory stats printing")
Closes: https://gitlab.freedesktop.org/drm/xe/kernel/-/issues/2727
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Cc: Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com>
Cc: Tejas Upadhyay <tejas.upadhyay@intel.com>
Cc: "Thomas Hellström" <thomas.hellstrom@linux.intel.com>
Cc: <stable@vger.kernel.org> # v6.8+
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Tejas Upadhyay <tejas.upadhyay@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240911155527.178910-5-matthew.auld@intel.com
(cherry picked from commit 0083b8e6f11d7662283a267d4ce7c966812ffd8a)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
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Enable Xe2+ PES disaggregation (for OAG) to retrieve disaggregated metrics
when disaggregated data is needed. Userspace can select whether to receive
aggregated or disaggregated metrics via the particular OA configuration it
uses (programmed via DRM_XE_OBSERVATION_OP_ADD_CONFIG).
Bspec: 61101
Fixes: e936f885f1e9 ("drm/xe/oa/uapi: Expose OA stream fd")
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240909165933.2638765-1-ashutosh.dixit@intel.com
Cc: stable@vger.kernel.org
(cherry picked from commit fb2551a0e93897aec7fb3d4f473ebc06b146d160)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
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It's supposed to be an open range at the end like in i915. Fingers
crossed that nobody relies on this definition.
Fixes: 44e694958b95 ("drm/xe/display: Implement display support")
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Acked-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/fe8743770694e429f6902491cdb306c97bdf701a.1724180287.git.jani.nikula@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
(cherry picked from commit 453afb1a439994deeacb8d9ecbb48c1f2348ea0a)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
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Check size of the data not size of the pointer.
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202407300421.IBkAja96-lkp@intel.com/
Fixes: ddeb7989a98f ("drm/xe: Validate user fence during creation")
Cc: Matthew Auld <matthew.auld@intel.com>
Cc: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Reviewed-by: Tejas Upadhyay <tejas.upadhyay@intel.com>
Reviewed-by: Apoorva Singh <apoorva.singh@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240806110722.28661-1-nirmoy.das@intel.com
Signed-off-by: Nirmoy Das <nirmoy.das@intel.com>
(cherry picked from commit e102b5ed6e283a144793cab8fcd95f61d0ddbadb)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
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Store xe_device ahead of processing message as message can be free'd in
some cases.
v2:
- Including missing local changes
v3:
- Resend for CI
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Closes: https://lore.kernel.org/r/202407231445.rpisd1vA-lkp@intel.com/
Fixes: 55ea73aacfb9 ("drm/xe: Build PM into GuC CT layer")
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240724164341.1848954-1-matthew.brost@intel.com
(cherry picked from commit 1a394b4f504f33eac8c38b6f42ba025105c7e869)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
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'fence' argument in send_tlb_invalidation cannot be NULL, remove
non-NULL check from send_tlb_invalidation.
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Closes: https://lore.kernel.org/r/202407231049.esig0Fkb-lkp@intel.com/
Fixes: 58bfe6674467 ("drm/xe: Drop xe_gt_tlb_invalidation_wait")
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Nirmoy Das <nirmoy.das@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240723190714.1744653-1-matthew.brost@intel.com
Signed-off-by: Nirmoy Das <nirmoy.das@intel.com>
(cherry picked from commit 6482253e6e1ad1c3a76645a3899d3cfdb5b918cb)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
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The header generated/xe_wa_oob.h is included twice. Remove one.
Fixes: 27cb2b7fec2a ("drm/xe/bmg: implement Wa_16023588340")
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/r/202407052122.AzuWSPuo-lkp@intel.com/
Reviewed-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240708173301.1543871-1-lucas.demarchi@intel.com
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
(cherry picked from commit 3d122660dc70029d9cccb4e8670125f0affa959e)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
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[Why]
DC has a special commit path for native cursor, which use the built-in
cursor pipe within DCN planes. This update path does not require all
enabled planes to be added to the list of surface updates sent to DC.
This is not the case for overlay cursor; it uses the same path as MPO
commits. This update path requires all enabled planes to be added to the
list of surface updates sent to DC. Otherwise, DC will disable planes
not inside the list.
[How]
If overlay cursor is needed, add all planes on the same CRTC as this
cursor to the atomic state. This is already done for non-cursor planes
(MPO), just before the added lines.
Fixes: 1b04dcca4fb1 ("drm/amd/display: Introduce overlay cursor mode")
Closes: https://lore.kernel.org/lkml/f68020a3-c413-482d-beb2-5432d98a1d3e@amd.com
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Leo Li <sunpeng.li@amd.com>
Tested-by: Mikhail Gavrilov <mikhail.v.gavrilov@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 0c8c5bdd7eaf291b6f727e98506fb68acee3a4cc)
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Per the comments, these are variable sized arrays.
Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/3613
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 81f7804ba84ee617ed594de934ed87bcc4f83531)
Cc: stable@vger.kernel.org
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Similar to jpeg_v2_dec_ring_parse_cs() but it has different
register ranges and a few other registers access.
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: David (Ming Qiang) Wu <David.Wu3@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 3d5adbdf1d01708777f2eda375227cbf7a98b9fe)
Cc: stable@vger.kernel.org
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This patch extends the same cs parser from JPEG v4.0.3 to
other JPEG versions (v2 and above).
Rename to more common name as jpeg_v2_dec_ring_parse_cs()
from jpeg_v4_0_3_dec_ring_parse_cs().
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: David (Ming Qiang) Wu <David.Wu3@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 88dcad2d07c8d82e6a097c8e74239eb67333bcf7)
Cc: stable@vger.kernel.org
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fix the pp_dpm_pcie issue on smu v14.0.2/3 as below:
0: 2.5GT/s, x4 250Mhz
1: 8.0GT/s, x4 616Mhz *
2: 8.0GT/s, x4 1143Mhz *
the middle level can be removed since it is always skipped on
smu v14.0.2/3
Signed-off-by: Kenneth Feng <kenneth.feng@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit fedf6db3ea9dc5eda0b78cfbbb8f7a88b97e5b24)
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update the features set on smu v14.0.2/3
Signed-off-by: Kenneth Feng <kenneth.feng@amd.com>
Reviewed-by: Yang Wang <kevinyang.wang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 25d48f2eb0af1f0e6f09f54a1a1716f48c0722c9)
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[Why]
drm_normalize_zpos will set the crtc_state->zpos_changed to 1 if any of
it's assigned planes changes zpos, or is removed/added from it.
To have amdgpu_dm request a plane reset on this is too broad. For
example, if only the cursor plane was moved from one crtc to another,
the crtc's zpos_changed will be set to true. But that does not mean that
the underlying primary plane requires a reset.
[How]
Narrow it down so that only the plane that has a change in zpos will
require a reset.
As a future TODO, we can further optimize this by only requiring a reset
on z-order change. Z-order is different from z-pos, since a zpos change
doesn't necessarily mean the z-ordering changed, and DC should only
require a reset if the z-ordering changed.
For example, the following zpos update does not change z-ordering:
Plane A: zpos 2 -> 3
Plane B: zpos 1 -> 2
=> Plane A is still on top of plane B: no reset needed
Whereas this one does change z-ordering:
Plane A: zpos 2 -> 1
Plane B: zpos 1 -> 2
=> Plane A changed from on top, to below plane B: reset needed
Fixes: 38e0c3df6dbd ("drm/amd/display: Move PRIMARY plane zpos higher")
Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/3569
Signed-off-by: Leo Li <sunpeng.li@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 578aab4ecc73476393389440724b7a391cc0cea9)
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dc_state_destruct() nulls the resource context of the DC state. The pipe
context passed to dcn35_set_drr() is a member of this resource context.
If dc_state_destruct() is called parallel to the IRQ processing (which
calls dcn35_set_drr() at some point), we can end up using already nulled
function callback fields of struct stream_resource.
The logic in dcn35_set_drr() already tries to avoid this, by checking tg
against NULL. But if the nulling happens exactly after the NULL check and
before the next access, then we get a race.
Avoid this by copying tg first to a local variable, and then use this
variable for all the operations. This should work, as long as nobody
frees the resource pool where the timing generators live.
Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/3142
Fixes: 06ad7e164256 ("drm/amd/display: Destroy DC context while keeping DML and DML2")
Signed-off-by: Tobias Jakobi <tjakobi@math.uni-bielefeld.de>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 0607a50c004798a96e62c089a4c34c220179dcb5)
Cc: stable@vger.kernel.org
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dc_state_destruct() nulls the resource context of the DC state. The pipe
context passed to dcn10_set_drr() is a member of this resource context.
If dc_state_destruct() is called parallel to the IRQ processing (which
calls dcn10_set_drr() at some point), we can end up using already nulled
function callback fields of struct stream_resource.
The logic in dcn10_set_drr() already tries to avoid this, by checking tg
against NULL. But if the nulling happens exactly after the NULL check and
before the next access, then we get a race.
Avoid this by copying tg first to a local variable, and then use this
variable for all the operations. This should work, as long as nobody
frees the resource pool where the timing generators live.
Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/3142
Fixes: 06ad7e164256 ("drm/amd/display: Destroy DC context while keeping DML and DML2")
Signed-off-by: Tobias Jakobi <tjakobi@math.uni-bielefeld.de>
Tested-by: Raoul van Rüschen <raoul.van.rueschen@gmail.com>
Tested-by: Christopher Snowhill <chris@kode54.net>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Tested-by: Sefa Eyeoglu <contact@scrumplex.net>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit a3cc326a43bdc48fbdf53443e1027a03e309b643)
Cc: stable@vger.kernel.org
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Populate cache line size info in topology based on information from IP
discovery table.
Signed-off-by: David Belanger <david.belanger@amd.com>
Reviewed-by: Sreekant Somasekharan <Sreekant.Somasekharan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 4e9fadacddca96a2e6fcee9cc9488b78eb7a6953)
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Commit <17de3f5fdd35> ("iommu: Retire bus ops") removes iommu ops from
the bus structure. The iommu subsystem no longer relies on bus for
operations. So iommu_domain_alloc() interface is no longer relevant.
Replace iommu_domain_alloc() with iommu_paging_domain_alloc() which takes
the physical device from which the host1x_device virtual device was
instantiated. This physical device is a common parent to all physical
devices that are part of the virtual device.
Suggested-by: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Lyude Paul <lyude@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240902014700.66095-4-baolu.lu@linux.intel.com
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Commit <421be3ee36a4> ("drm/rockchip: Refactor IOMMU initialisation") has
refactored rockchip_drm_init_iommu() to pass a device that the domain is
allocated for. Replace iommu_domain_alloc() with
iommu_paging_domain_alloc() to retire the former.
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Acked-by: Andy Yan <andyshrk@163.com>
Signed-off-by: Lyude Paul <lyude@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240902014700.66095-3-baolu.lu@linux.intel.com
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A syncobj reference is taken in drm_syncobj_find, but not released if
eventfd_ctx_fdget or kzalloc fails. Put the reference in these error
paths.
Reported-by: Xingyu Jin <xingyuj@google.com>
Fixes: c7a472297169 ("drm/syncobj: add IOCTL to register an eventfd")
Signed-off-by: T.J. Mercier <tjmercier@google.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@igalia.com>
Reviewed-by. Christian König <christian.koenig@amd.com>
CC: stable@vger.kernel.org # 6.6+
Link: https://patchwork.freedesktop.org/patch/msgid/20240909205400.3498337-1-tjmercier@google.com
Signed-off-by: Christian König <christian.koenig@amd.com>
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The added lvds driver and a change in the dsi driver resulted in failed
builds when COMMON_CLK is disabled:
x86_64-linux-ld: drivers/gpu/drm/stm/dw_mipi_dsi-stm.o: in function `dw_mipi_dsi_stm_remove':
dw_mipi_dsi-stm.c:(.text+0x51e): undefined reference to `clk_hw_unregister'
x86_64-linux-ld: drivers/gpu/drm/stm/lvds.o: in function `lvds_remove':
lvds.c:(.text+0xe3): undefined reference to `of_clk_del_provider'
x86_64-linux-ld: lvds.c:(.text+0xec): undefined reference to `clk_hw_unregister'
x86_64-linux-ld: drivers/gpu/drm/stm/lvds.o: in function `lvds_pll_config':
lvds.c:(.text+0xb5d): undefined reference to `clk_hw_get_rate'
x86_64-linux-ld: drivers/gpu/drm/stm/lvds.o: in function `lvds_probe':
lvds.c:(.text+0x1476): undefined reference to `clk_hw_register'
x86_64-linux-ld: lvds.c:(.text+0x148b): undefined reference to `of_clk_hw_simple_get'
x86_64-linux-ld: lvds.c:(.text+0x1493): undefined reference to `of_clk_add_hw_provider'
x86_64-linux-ld: lvds.c:(.text+0x1535): undefined reference to `clk_hw_unregister'
Add this as a dependency for the stm driver itself, since it will be
required in practice anyway.
Fixes: 185f99b61442 ("drm/stm: dsi: expose DSI PHY internal clock")
Fixes: aca1cbc1c986 ("drm/stm: lvds: add new STM32 LVDS Display Interface Transmitter driver")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20240719075454.3595358-1-arnd@kernel.org
Signed-off-by: Raphael Gallais-Pou <raphael.gallais-pou@foss.st.com>
(cherry picked from commit 26dbffb2a4c4d4639c7b336f6b74a437c23dadd4)
Signed-off-by: Maxime Ripard <mripard@kernel.org>
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init() was removed from ramgp102 when reworking the memory detection, as
it was thought that the code was only necessary when the driver performs
mclk changes, which nouveau doesn't support on pascal.
However, it turns out that we still need to execute this on some GPUs to
restore settings after DEVINIT, so revert to the original behaviour.
v2: fix tags in commit message, cc stable
Closes: https://gitlab.freedesktop.org/drm/nouveau/-/issues/319
Fixes: 2c0c15a22fa0 ("drm/nouveau/fb/gp102-ga100: switch to simpler vram size detection method")
Cc: stable@vger.kernel.org # 6.6+
Signed-off-by: Ben Skeggs <bskeggs@nvidia.com>
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240904232418.8590-1-bskeggs@nvidia.com
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It may be possible for the sum of the values derived from
i915_ggtt_offset() and __get_parent_scratch_offset()/
i915_ggtt_offset() to go over the u32 limit before being assigned
to wq offsets of u64 type.
Mitigate these issues by expanding one of the right operands
to u64 to avoid any overflow issues just in case.
Found by Linux Verification Center (linuxtesting.org) with static
analysis tool SVACE.
Fixes: c2aa552ff09d ("drm/i915/guc: Add multi-lrc context registration")
Cc: Matthew Brost <matthew.brost@intel.com>
Cc: John Harrison <John.C.Harrison@Intel.com>
Signed-off-by: Nikita Zhandarovich <n.zhandarovich@fintech.ru>
Link: https://patchwork.freedesktop.org/patch/msgid/20240725155925.14707-1-n.zhandarovich@fintech.ru
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
(cherry picked from commit 1f1c1bd56620b80ae407c5790743e17caad69cec)
Signed-off-by: Tvrtko Ursulin <tursulin@ursulin.net>
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Until VM_DONTEXPAND was added in commit 1c1914d6e8c6 ("dma-buf: heaps:
Don't track CMA dma-buf pages under RssFile") it was possible to obtain
a mapping larger than the buffer size via mremap and bypass the overflow
check in dma_buf_mmap_internal. When using such a mapping to attempt to
fault past the end of the buffer, the CMA heap fault handler also checks
the fault offset against the buffer size, but gets the boundary wrong by
1. Fix the boundary check so that we don't read off the end of the pages
array and insert an arbitrary page in the mapping.
Reported-by: Xingyu Jin <xingyuj@google.com>
Fixes: a5d2d29e24be ("dma-buf: heaps: Move heap-helper logic into the cma_heap implementation")
Cc: stable@vger.kernel.org # Applicable >= 5.10. Needs adjustments only for 5.10.
Signed-off-by: T.J. Mercier <tjmercier@google.com>
Acked-by: John Stultz <jstultz@google.com>
Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240830192627.2546033-1-tjmercier@google.com
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clang warns on this because it has an unannotated fall-through between
cases:
arch/x86/kvm/x86.c:4819:2: error: unannotated fall-through between switch labels [-Werror,-Wimplicit-fallthrough]
and while we could annotate it as a fallthrough, the proper fix is to
just add the break for this case, instead of falling through to the
default case and the break there.
gcc also has that warning, but it looks like gcc only warns for the
cases where they fall through to "real code", rather than to just a
break. Odd.
Fixes: d30d9ee94cc0 ("KVM: x86: Only advertise KVM_CAP_READONLY_MEM when supported by VM")
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Tom Dohrmann <erbse.13@gmx.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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get_stashed_dentry() tries to optimistically retrieve a stashed dentry
from a provided location. It needs to ensure to hold rcu lock before it
dereference the stashed location to prevent UAF issues. Use
rcu_dereference() instead of READ_ONCE() it's effectively equivalent
with some lockdep bells and whistles and it communicates clearly that
this expects rcu protection.
Link: https://lore.kernel.org/r/20240906-vfs-hotfix-5959800ffa68@brauner
Fixes: 07fd7c329839 ("libfs: add path_from_stashed()")
Reported-by: syzbot+f82b36bffae7ef78b6a7@syzkaller.appspotmail.com
Fixes: syzbot+f82b36bffae7ef78b6a7@syzkaller.appspotmail.com
Reported-by: syzbot+cbe4b96e1194b0e34db6@syzkaller.appspotmail.com
Fixes: syzbot+cbe4b96e1194b0e34db6@syzkaller.appspotmail.com
Signed-off-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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syzbot found an use-after-free Read in ila_nf_input [1]
Issue here is that ila_xlat_exit_net() frees the rhashtable,
then call nf_unregister_net_hooks().
It should be done in the reverse way, with a synchronize_rcu().
This is a good match for a pre_exit() method.
[1]
BUG: KASAN: use-after-free in rht_key_hashfn include/linux/rhashtable.h:159 [inline]
BUG: KASAN: use-after-free in __rhashtable_lookup include/linux/rhashtable.h:604 [inline]
BUG: KASAN: use-after-free in rhashtable_lookup include/linux/rhashtable.h:646 [inline]
BUG: KASAN: use-after-free in rhashtable_lookup_fast+0x77a/0x9b0 include/linux/rhashtable.h:672
Read of size 4 at addr ffff888064620008 by task ksoftirqd/0/16
CPU: 0 UID: 0 PID: 16 Comm: ksoftirqd/0 Not tainted 6.11.0-rc4-syzkaller-00238-g2ad6d23f465a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:93 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119
print_address_description mm/kasan/report.c:377 [inline]
print_report+0x169/0x550 mm/kasan/report.c:488
kasan_report+0x143/0x180 mm/kasan/report.c:601
rht_key_hashfn include/linux/rhashtable.h:159 [inline]
__rhashtable_lookup include/linux/rhashtable.h:604 [inline]
rhashtable_lookup include/linux/rhashtable.h:646 [inline]
rhashtable_lookup_fast+0x77a/0x9b0 include/linux/rhashtable.h:672
ila_lookup_wildcards net/ipv6/ila/ila_xlat.c:132 [inline]
ila_xlat_addr net/ipv6/ila/ila_xlat.c:652 [inline]
ila_nf_input+0x1fe/0x3c0 net/ipv6/ila/ila_xlat.c:190
nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline]
nf_hook_slow+0xc3/0x220 net/netfilter/core.c:626
nf_hook include/linux/netfilter.h:269 [inline]
NF_HOOK+0x29e/0x450 include/linux/netfilter.h:312
__netif_receive_skb_one_core net/core/dev.c:5661 [inline]
__netif_receive_skb+0x1ea/0x650 net/core/dev.c:5775
process_backlog+0x662/0x15b0 net/core/dev.c:6108
__napi_poll+0xcb/0x490 net/core/dev.c:6772
napi_poll net/core/dev.c:6841 [inline]
net_rx_action+0x89b/0x1240 net/core/dev.c:6963
handle_softirqs+0x2c4/0x970 kernel/softirq.c:554
run_ksoftirqd+0xca/0x130 kernel/softirq.c:928
smpboot_thread_fn+0x544/0xa30 kernel/smpboot.c:164
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
</TASK>
The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x64620
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xbfffffff(buddy)
raw: 00fff00000000000 ffffea0000959608 ffffea00019d9408 0000000000000000
raw: 0000000000000000 0000000000000003 00000000bfffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as freed
page last allocated via order 3, migratetype Unmovable, gfp_mask 0x52dc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_ZERO), pid 5242, tgid 5242 (syz-executor), ts 73611328570, free_ts 618981657187
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1493
prep_new_page mm/page_alloc.c:1501 [inline]
get_page_from_freelist+0x2e4c/0x2f10 mm/page_alloc.c:3439
__alloc_pages_noprof+0x256/0x6c0 mm/page_alloc.c:4695
__alloc_pages_node_noprof include/linux/gfp.h:269 [inline]
alloc_pages_node_noprof include/linux/gfp.h:296 [inline]
___kmalloc_large_node+0x8b/0x1d0 mm/slub.c:4103
__kmalloc_large_node_noprof+0x1a/0x80 mm/slub.c:4130
__do_kmalloc_node mm/slub.c:4146 [inline]
__kmalloc_node_noprof+0x2d2/0x440 mm/slub.c:4164
__kvmalloc_node_noprof+0x72/0x190 mm/util.c:650
bucket_table_alloc lib/rhashtable.c:186 [inline]
rhashtable_init_noprof+0x534/0xa60 lib/rhashtable.c:1071
ila_xlat_init_net+0xa0/0x110 net/ipv6/ila/ila_xlat.c:613
ops_init+0x359/0x610 net/core/net_namespace.c:139
setup_net+0x515/0xca0 net/core/net_namespace.c:343
copy_net_ns+0x4e2/0x7b0 net/core/net_namespace.c:508
create_new_namespaces+0x425/0x7b0 kernel/nsproxy.c:110
unshare_nsproxy_namespaces+0x124/0x180 kernel/nsproxy.c:228
ksys_unshare+0x619/0xc10 kernel/fork.c:3328
__do_sys_unshare kernel/fork.c:3399 [inline]
__se_sys_unshare kernel/fork.c:3397 [inline]
__x64_sys_unshare+0x38/0x40 kernel/fork.c:3397
page last free pid 11846 tgid 11846 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1094 [inline]
free_unref_page+0xd22/0xea0 mm/page_alloc.c:2612
__folio_put+0x2c8/0x440 mm/swap.c:128
folio_put include/linux/mm.h:1486 [inline]
free_large_kmalloc+0x105/0x1c0 mm/slub.c:4565
kfree+0x1c4/0x360 mm/slub.c:4588
rhashtable_free_and_destroy+0x7c6/0x920 lib/rhashtable.c:1169
ila_xlat_exit_net+0x55/0x110 net/ipv6/ila/ila_xlat.c:626
ops_exit_list net/core/net_namespace.c:173 [inline]
cleanup_net+0x802/0xcc0 net/core/net_namespace.c:640
process_one_work kernel/workqueue.c:3231 [inline]
process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312
worker_thread+0x86d/0xd40 kernel/workqueue.c:3390
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Memory state around the buggy address:
ffff88806461ff00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff88806461ff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff888064620000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
^
ffff888064620080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ffff888064620100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
Fixes: 7f00feaf1076 ("ila: Add generic ILA translation facility")
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Tom Herbert <tom@herbertland.com>
Reviewed-by: Florian Westphal <fw@strlen.de>
Link: https://patch.msgid.link/20240904144418.1162839-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Execution of command:
./tools/net/ynl/cli.py --spec Documentation/netlink/specs/dpll.yaml /
--subscribe "monitor" --sleep 10
fails with:
File "/repo/./tools/net/ynl/cli.py", line 109, in main
ynl.check_ntf()
File "/repo/tools/net/ynl/lib/ynl.py", line 924, in check_ntf
op = self.rsp_by_value[nl_msg.cmd()]
KeyError: 19
Parsing Generic Netlink notification messages performs lookup for op in
the message. The message was not yet decoded, and is not yet considered
GenlMsg, thus msg.cmd() returns Generic Netlink family id (19) instead of
proper notification command id (i.e.: DPLL_CMD_PIN_CHANGE_NTF=13).
Allow the op to be obtained within NetlinkProtocol.decode(..) itself if the
op was not passed to the decode function, thus allow parsing of Generic
Netlink notifications without causing the failure.
Suggested-by: Donald Hunter <donald.hunter@gmail.com>
Link: https://lore.kernel.org/netdev/m2le0n5xpn.fsf@gmail.com/
Fixes: 0a966d606c68 ("tools/net/ynl: Fix extack decoding for directional ops")
Signed-off-by: Arkadiusz Kubalewski <arkadiusz.kubalewski@intel.com>
Reviewed-by: Donald Hunter <donald.hunter@gmail.com>
Link: https://patch.msgid.link/20240904135034.316033-1-arkadiusz.kubalewski@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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While checking the latest series for ptp_ocp driver I realised that
MAINTAINERS file has wrong item about email on linux.dev domain.
Fixes: 795fd9342c62 ("ptp_ocp: adjust MAINTAINERS and mailmap")
Signed-off-by: Vadim Fedorenko <vadim.fedorenko@linux.dev>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20240904131855.559078-1-vadim.fedorenko@linux.dev
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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bind_wildcard is compiled but not run, bind_timewait is not compiled.
These two tests complete in a very short time, use the test harness
properly, and seem reasonable to enable.
The author of the tests confirmed via email that these were
intended to be run.
Enable these two tests.
Fixes: 13715acf8ab5 ("selftest: Add test for bind() conflicts.")
Fixes: 2c042e8e54ef ("tcp: Add selftest for bind() and TIME_WAIT.")
Signed-off-by: Jamie Bainbridge <jamie.bainbridge@gmail.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Link: https://patch.msgid.link/5a009b26cf5fb1ad1512d89c61b37e2fac702323.1725430322.git.jamie.bainbridge@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Add a missing kerneldoc comment for the 'test' test context parameter,
fixing the following warning:
include/kunit/test.h:492: warning: Function parameter or struct member 'test' not described in 'kunit_kfree_const'
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Closes: https://lore.kernel.org/lkml/20240827160631.67e121ed@canb.auug.org.au/
Fixes: f2c6dbd22017 ("kunit: Device wrappers should also manage driver name")
Signed-off-by: David Gow <davidgow@google.com>
Reviewed-by: Kees Cook <kees@kernel.org>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
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This reverts commit 8f614469de248a4bc55fb07e55d5f4c340c75b11.
This breaks some manual setting of the profile mode in
certain cases.
Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/3600
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 7a199557643e993d4e7357860624b8aa5d8f4340)
Cc: stable@vger.kernel.org
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Add mailing list imx@lists.linux.dev for nxp spi drivers(qspi, fspi and
dspi).
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Reviewed-by: Stefan Wahren <wahrenst@gmx.net>
Link: https://patch.msgid.link/20240905155230.1901787-1-Frank.Li@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Add imx@lists.linux.dev and NXP maintainer information for lpspi driver
(drivers/spi/spi-fsl-lpspi.c).
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Reviewed-by: Stefan Wahren <wahrenst@gmx.net>
Link: https://patch.msgid.link/20240905154124.1901311-1-Frank.Li@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Commit 92b5265d38f6a ("KVM: Depend on HIGH_RES_TIMERS") added a dependency
to high resolution timers with the comment:
KVM lapic timer and tsc deadline timer based on hrtimer,
setting a leftmost node to rb tree and then do hrtimer reprogram.
If hrtimer not configured as high resolution, hrtimer_enqueue_reprogram
do nothing and then make kvm lapic timer and tsc deadline timer fail.
That was back in 2012, where hrtimer_start_range_ns() would do the
reprogramming with hrtimer_enqueue_reprogram(). But as that was a nop with
high resolution timers disabled, this did not work. But a lot has changed
in the last 12 years.
For example, commit 49a2a07514a3a ("hrtimer: Kick lowres dynticks targets on
timer enqueue") modifies __hrtimer_start_range_ns() to work with low res
timers. There's been lots of other changes that make low res work.
ChromeOS has tested this before as well, and it hasn't seen any issues
with running KVM with high res timers disabled. There could be problems,
especially at low HZ, for guests that do not support kvmclock and rely
on precise delivery of periodic timers to keep their clock running.
This can be the APIC timer (provided by the kernel), the RTC (provided
by userspace), or the i8254 (choice of kernel/userspace). These guests
are few and far between these days, and in the case of the APIC timer +
Intel hosts we can use the preemption timer (which is TSC-based and has
better latency _and_ accuracy).
In KVM, only x86 is requiring CONFIG_HIGH_RES_TIMERS; perhaps a "depends
on HIGH_RES_TIMERS || EXPERT" could be added to virt/kvm, or a pr_warn
could be added to kvm_init if HIGH_RES_TIMERS are not enabled. But in
general, it seems that there must be other code in the kernel (maybe
sound/?) that is relying on having high-enough HZ or hrtimers but that's
not documented anywhere. Whenever you disable it you probably need to
know what you're doing and what your workload is; so the dependency is
not particularly interesting, and we can just remove it.
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Message-ID: <20240821095127.45d17b19@gandalf.local.home>
[Added the last two paragraphs to the commit message. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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The timerlat interface will get and put the task that is part of the
"kthread" field of the osn_var to keep it around until all references are
released. But here's a race in the "stop_kthread()" code that will call
put_task_struct() on the kthread if it is not a kernel thread. This can
race with the releasing of the references to that task struct and the
put_task_struct() can be called twice when it should have been called just
once.
Take the interface_lock() in stop_kthread() to synchronize this change.
But to do so, the function stop_per_cpu_kthreads() needs to change the
loop from for_each_online_cpu() to for_each_possible_cpu() and remove the
cpu_read_lock(), as the interface_lock can not be taken while the cpu
locks are held. The only side effect of this change is that it may do some
extra work, as the per_cpu variables of the offline CPUs would not be set
anyway, and would simply be skipped in the loop.
Remove unneeded "return;" in stop_kthread().
Cc: stable@vger.kernel.org
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Tomas Glozar <tglozar@redhat.com>
Cc: John Kacur <jkacur@redhat.com>
Cc: "Luis Claudio R. Goncalves" <lgoncalv@redhat.com>
Link: https://lore.kernel.org/20240905113359.2b934242@gandalf.local.home
Fixes: e88ed227f639e ("tracing/timerlat: Add user-space interface")
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
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The timerlat tracer can use user space threads to check for osnoise and
timer latency. If the program using this is killed via a SIGTERM, the
threads are shutdown one at a time and another tracing instance can start
up resetting the threads before they are fully closed. That causes the
hrtimer assigned to the kthread to be shutdown and freed twice when the
dying thread finally closes the file descriptors, causing a use-after-free
bug.
Only cancel the hrtimer if the associated thread is still around. Also add
the interface_lock around the resetting of the tlat_var->kthread.
Note, this is just a quick fix that can be backported to stable. A real
fix is to have a better synchronization between the shutdown of old
threads and the starting of new ones.
Link: https://lore.kernel.org/all/20240820130001.124768-1-tglozar@redhat.com/
Cc: stable@vger.kernel.org
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: "Luis Claudio R. Goncalves" <lgoncalv@redhat.com>
Link: https://lore.kernel.org/20240905085330.45985730@gandalf.local.home
Fixes: e88ed227f639e ("tracing/timerlat: Add user-space interface")
Reported-by: Tomas Glozar <tglozar@redhat.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
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The start_kthread() and stop_thread() code was not always called with the
interface_lock held. This means that the kthread variable could be
unexpectedly changed causing the kthread_stop() to be called on it when it
should not have been, leading to:
while true; do
rtla timerlat top -u -q & PID=$!;
sleep 5;
kill -INT $PID;
sleep 0.001;
kill -TERM $PID;
wait $PID;
done
Causing the following OOPS:
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017]
CPU: 5 UID: 0 PID: 885 Comm: timerlatu/5 Not tainted 6.11.0-rc4-test-00002-gbc754cc76d1b-dirty #125 a533010b71dab205ad2f507188ce8c82203b0254
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:hrtimer_active+0x58/0x300
Code: 48 c1 ee 03 41 54 48 01 d1 48 01 d6 55 53 48 83 ec 20 80 39 00 0f 85 30 02 00 00 49 8b 6f 30 4c 8d 75 10 4c 89 f0 48 c1 e8 03 <0f> b6 3c 10 4c 89 f0 83 e0 07 83 c0 03 40 38 f8 7c 09 40 84 ff 0f
RSP: 0018:ffff88811d97f940 EFLAGS: 00010202
RAX: 0000000000000002 RBX: ffff88823c6b5b28 RCX: ffffed10478d6b6b
RDX: dffffc0000000000 RSI: ffffed10478d6b6c RDI: ffff88823c6b5b28
RBP: 0000000000000000 R08: ffff88823c6b5b58 R09: ffff88823c6b5b60
R10: ffff88811d97f957 R11: 0000000000000010 R12: 00000000000a801d
R13: ffff88810d8b35d8 R14: 0000000000000010 R15: ffff88823c6b5b28
FS: 0000000000000000(0000) GS:ffff88823c680000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000561858ad7258 CR3: 000000007729e001 CR4: 0000000000170ef0
Call Trace:
<TASK>
? die_addr+0x40/0xa0
? exc_general_protection+0x154/0x230
? asm_exc_general_protection+0x26/0x30
? hrtimer_active+0x58/0x300
? __pfx_mutex_lock+0x10/0x10
? __pfx_locks_remove_file+0x10/0x10
hrtimer_cancel+0x15/0x40
timerlat_fd_release+0x8e/0x1f0
? security_file_release+0x43/0x80
__fput+0x372/0xb10
task_work_run+0x11e/0x1f0
? _raw_spin_lock+0x85/0xe0
? __pfx_task_work_run+0x10/0x10
? poison_slab_object+0x109/0x170
? do_exit+0x7a0/0x24b0
do_exit+0x7bd/0x24b0
? __pfx_migrate_enable+0x10/0x10
? __pfx_do_exit+0x10/0x10
? __pfx_read_tsc+0x10/0x10
? ktime_get+0x64/0x140
? _raw_spin_lock_irq+0x86/0xe0
do_group_exit+0xb0/0x220
get_signal+0x17ba/0x1b50
? vfs_read+0x179/0xa40
? timerlat_fd_read+0x30b/0x9d0
? __pfx_get_signal+0x10/0x10
? __pfx_timerlat_fd_read+0x10/0x10
arch_do_signal_or_restart+0x8c/0x570
? __pfx_arch_do_signal_or_restart+0x10/0x10
? vfs_read+0x179/0xa40
? ksys_read+0xfe/0x1d0
? __pfx_ksys_read+0x10/0x10
syscall_exit_to_user_mode+0xbc/0x130
do_syscall_64+0x74/0x110
? __pfx___rseq_handle_notify_resume+0x10/0x10
? __pfx_ksys_read+0x10/0x10
? fpregs_restore_userregs+0xdb/0x1e0
? fpregs_restore_userregs+0xdb/0x1e0
? syscall_exit_to_user_mode+0x116/0x130
? do_syscall_64+0x74/0x110
? do_syscall_64+0x74/0x110
? do_syscall_64+0x74/0x110
entry_SYSCALL_64_after_hwframe+0x71/0x79
RIP: 0033:0x7ff0070eca9c
Code: Unable to access opcode bytes at 0x7ff0070eca72.
RSP: 002b:00007ff006dff8c0 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: 0000000000000000 RBX: 0000000000000005 RCX: 00007ff0070eca9c
RDX: 0000000000000400 RSI: 00007ff006dff9a0 RDI: 0000000000000003
RBP: 00007ff006dffde0 R08: 0000000000000000 R09: 00007ff000000ba0
R10: 00007ff007004b08 R11: 0000000000000246 R12: 0000000000000003
R13: 00007ff006dff9a0 R14: 0000000000000007 R15: 0000000000000008
</TASK>
Modules linked in: snd_hda_intel snd_intel_dspcfg snd_intel_sdw_acpi snd_hda_codec snd_hwdep snd_hda_core
---[ end trace 0000000000000000 ]---
This is because it would mistakenly call kthread_stop() on a user space
thread making it "exit" before it actually exits.
Since kthreads are created based on global behavior, use a cpumask to know
when kthreads are running and that they need to be shutdown before
proceeding to do new work.
Link: https://lore.kernel.org/all/20240820130001.124768-1-tglozar@redhat.com/
This was debugged by using the persistent ring buffer:
Link: https://lore.kernel.org/all/20240823013902.135036960@goodmis.org/
Note, locking was originally used to fix this, but that proved to cause too
many deadlocks to work around:
https://lore.kernel.org/linux-trace-kernel/20240823102816.5e55753b@gandalf.local.home/
Cc: stable@vger.kernel.org
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: "Luis Claudio R. Goncalves" <lgoncalv@redhat.com>
Link: https://lore.kernel.org/20240904103428.08efdf4c@gandalf.local.home
Fixes: e88ed227f639e ("tracing/timerlat: Add user-space interface")
Reported-by: Tomas Glozar <tglozar@redhat.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
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When the headset is connected, there is no automatic switching of the
capture source - you can only manually select the headset microphone
in pavucontrol.
This patch fixes/activates the inactive microphone of the headset.
Signed-off-by: Vasiliy Kovalev <kovalev@altlinux.org>
Cc: <stable@vger.kernel.org>
Link: https://patch.msgid.link/20240905140211.937385-1-kovalev@altlinux.org
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Chi Zhiling reported:
We found a null pointer accessing in tracefs[1], the reason is that the
variable 'ei_child' is set to LIST_POISON1, that means the list was
removed in eventfs_remove_rec. so when access the ei_child->is_freed, the
panic triggered.
by the way, the following script can reproduce this panic
loop1 (){
while true
do
echo "p:kp submit_bio" > /sys/kernel/debug/tracing/kprobe_events
echo "" > /sys/kernel/debug/tracing/kprobe_events
done
}
loop2 (){
while true
do
tree /sys/kernel/debug/tracing/events/kprobes/
done
}
loop1 &
loop2
[1]:
[ 1147.959632][T17331] Unable to handle kernel paging request at virtual address dead000000000150
[ 1147.968239][T17331] Mem abort info:
[ 1147.971739][T17331] ESR = 0x0000000096000004
[ 1147.976172][T17331] EC = 0x25: DABT (current EL), IL = 32 bits
[ 1147.982171][T17331] SET = 0, FnV = 0
[ 1147.985906][T17331] EA = 0, S1PTW = 0
[ 1147.989734][T17331] FSC = 0x04: level 0 translation fault
[ 1147.995292][T17331] Data abort info:
[ 1147.998858][T17331] ISV = 0, ISS = 0x00000004, ISS2 = 0x00000000
[ 1148.005023][T17331] CM = 0, WnR = 0, TnD = 0, TagAccess = 0
[ 1148.010759][T17331] GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0
[ 1148.016752][T17331] [dead000000000150] address between user and kernel address ranges
[ 1148.024571][T17331] Internal error: Oops: 0000000096000004 [#1] SMP
[ 1148.030825][T17331] Modules linked in: team_mode_loadbalance team nlmon act_gact cls_flower sch_ingress bonding tls macvlan dummy ib_core bridge stp llc veth amdgpu amdxcp mfd_core gpu_sched drm_exec drm_buddy radeon crct10dif_ce video drm_suballoc_helper ghash_ce drm_ttm_helper sha2_ce ttm sha256_arm64 i2c_algo_bit sha1_ce sbsa_gwdt cp210x drm_display_helper cec sr_mod cdrom drm_kms_helper binfmt_misc sg loop fuse drm dm_mod nfnetlink ip_tables autofs4 [last unloaded: tls]
[ 1148.072808][T17331] CPU: 3 PID: 17331 Comm: ls Tainted: G W ------- ---- 6.6.43 #2
[ 1148.081751][T17331] Source Version: 21b3b386e948bedd29369af66f3e98ab01b1c650
[ 1148.088783][T17331] Hardware name: Greatwall GW-001M1A-FTF/GW-001M1A-FTF, BIOS KunLun BIOS V4.0 07/16/2020
[ 1148.098419][T17331] pstate: 20000005 (nzCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
[ 1148.106060][T17331] pc : eventfs_iterate+0x2c0/0x398
[ 1148.111017][T17331] lr : eventfs_iterate+0x2fc/0x398
[ 1148.115969][T17331] sp : ffff80008d56bbd0
[ 1148.119964][T17331] x29: ffff80008d56bbf0 x28: ffff001ff5be2600 x27: 0000000000000000
[ 1148.127781][T17331] x26: ffff001ff52ca4e0 x25: 0000000000009977 x24: dead000000000100
[ 1148.135598][T17331] x23: 0000000000000000 x22: 000000000000000b x21: ffff800082645f10
[ 1148.143415][T17331] x20: ffff001fddf87c70 x19: ffff80008d56bc90 x18: 0000000000000000
[ 1148.151231][T17331] x17: 0000000000000000 x16: 0000000000000000 x15: ffff001ff52ca4e0
[ 1148.159048][T17331] x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000
[ 1148.166864][T17331] x11: 0000000000000000 x10: 0000000000000000 x9 : ffff8000804391d0
[ 1148.174680][T17331] x8 : 0000000180000000 x7 : 0000000000000018 x6 : 0000aaab04b92862
[ 1148.182498][T17331] x5 : 0000aaab04b92862 x4 : 0000000080000000 x3 : 0000000000000068
[ 1148.190314][T17331] x2 : 000000000000000f x1 : 0000000000007ea8 x0 : 0000000000000001
[ 1148.198131][T17331] Call trace:
[ 1148.201259][T17331] eventfs_iterate+0x2c0/0x398
[ 1148.205864][T17331] iterate_dir+0x98/0x188
[ 1148.210036][T17331] __arm64_sys_getdents64+0x78/0x160
[ 1148.215161][T17331] invoke_syscall+0x78/0x108
[ 1148.219593][T17331] el0_svc_common.constprop.0+0x48/0xf0
[ 1148.224977][T17331] do_el0_svc+0x24/0x38
[ 1148.228974][T17331] el0_svc+0x40/0x168
[ 1148.232798][T17331] el0t_64_sync_handler+0x120/0x130
[ 1148.237836][T17331] el0t_64_sync+0x1a4/0x1a8
[ 1148.242182][T17331] Code: 54ffff6c f9400676 910006d6 f9000676 (b9405300)
[ 1148.248955][T17331] ---[ end trace 0000000000000000 ]---
The issue is that list_del() is used on an SRCU protected list variable
before the synchronization occurs. This can poison the list pointers while
there is a reader iterating the list.
This is simply fixed by using list_del_rcu() that is specifically made for
this purpose.
Link: https://lore.kernel.org/linux-trace-kernel/20240829085025.3600021-1-chizhiling@163.com/
Cc: stable@vger.kernel.org
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Link: https://lore.kernel.org/20240904131605.640d42b1@gandalf.local.home
Fixes: 43aa6f97c2d03 ("eventfs: Get rid of dentry pointers without refcounts")
Reported-by: Chi Zhiling <chizhiling@kylinos.cn>
Tested-by: Chi Zhiling <chizhiling@kylinos.cn>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
|
|
In __tracing_open(), when max latency tracers took place on the cpu,
the time start of its buffer would be updated, then event entries with
timestamps being earlier than start of the buffer would be skipped
(see tracing_iter_reset()).
Softlockup will occur if the kernel is non-preemptible and too many
entries were skipped in the loop that reset every cpu buffer, so add
cond_resched() to avoid it.
Cc: stable@vger.kernel.org
Fixes: 2f26ebd549b9a ("tracing: use timestamp to determine start of latency traces")
Link: https://lore.kernel.org/20240827124654.3817443-1-zhengyejian@huaweicloud.com
Suggested-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Zheng Yejian <zhengyejian@huaweicloud.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
|
|
ftrace_graph_ret_addr() takes an 'idx' integer pointer that is used to
optimize the stack unwinding process. arm64 currently passes `NULL` for
this parameter which stops it from utilizing these optimizations.
Further, the current code for ftrace_graph_ret_addr() will just return
the passed in return address if it is NULL which will break this usage.
Pass a valid integer pointer to ftrace_graph_ret_addr() similar to
x86_64's stack unwinder.
Signed-off-by: Puranjay Mohan <puranjay@kernel.org>
Fixes: 29c1c24a2707 ("function_graph: Fix up ftrace_graph_ret_addr()")
Acked-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Acked-by: Will Deacon <will@kernel.org>
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Tested-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Link: https://lore.kernel.org/r/20240618162342.28275-1-puranjay@kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
|
|
The commit 783bf5d09f86 ("spi: spi-fsl-lpspi: limit PRESCALE bit in
TCR register") doesn't implement the prescaler maximum as intended.
The maximum allowed value for i.MX93 should be 1 and for i.MX7ULP
it should be 7. So this needs also a adjustment of the comparison
in the scldiv calculation.
Fixes: 783bf5d09f86 ("spi: spi-fsl-lpspi: limit PRESCALE bit in TCR register")
Signed-off-by: Stefan Wahren <wahrenst@gmx.net>
Link: https://patch.msgid.link/20240905111537.90389-1-wahrenst@gmx.net
Signed-off-by: Mark Brown <broonie@kernel.org>
|
|
CAPT block (CPU Capture Buffer) have 7 sublocks: 0-3, 4, 6, 7.
Function 'vsc73xx_is_addr_valid' allows to use only block 0 at this
moment.
This patch fix it.
Fixes: 05bd97fc559d ("net: dsa: Add Vitesse VSC73xx DSA router driver")
Signed-off-by: Pawel Dembicki <paweldembicki@gmail.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Link: https://patch.msgid.link/20240903203340.1518789-1-paweldembicki@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
|
|
In sch_cake, we keep track of the count of active bulk flows per host,
when running in dst/src host fairness mode, which is used as the
round-robin weight when iterating through flows. The count of active
bulk flows is updated whenever a flow changes state.
This has a peculiar interaction with the hash collision handling: when a
hash collision occurs (after the set-associative hashing), the state of
the hash bucket is simply updated to match the new packet that collided,
and if host fairness is enabled, that also means assigning new per-host
state to the flow. For this reason, the bulk flow counters of the
host(s) assigned to the flow are decremented, before new state is
assigned (and the counters, which may not belong to the same host
anymore, are incremented again).
Back when this code was introduced, the host fairness mode was always
enabled, so the decrement was unconditional. When the configuration
flags were introduced the *increment* was made conditional, but
the *decrement* was not. Which of course can lead to a spurious
decrement (and associated wrap-around to U16_MAX).
AFAICT, when host fairness is disabled, the decrement and wrap-around
happens as soon as a hash collision occurs (which is not that common in
itself, due to the set-associative hashing). However, in most cases this
is harmless, as the value is only used when host fairness mode is
enabled. So in order to trigger an array overflow, sch_cake has to first
be configured with host fairness disabled, and while running in this
mode, a hash collision has to occur to cause the overflow. Then, the
qdisc has to be reconfigured to enable host fairness, which leads to the
array out-of-bounds because the wrapped-around value is retained and
used as an array index. It seems that syzbot managed to trigger this,
which is quite impressive in its own right.
This patch fixes the issue by introducing the same conditional check on
decrement as is used on increment.
The original bug predates the upstreaming of cake, but the commit listed
in the Fixes tag touched that code, meaning that this patch won't apply
before that.
Fixes: 712639929912 ("sch_cake: Make the dual modes fairer")
Reported-by: syzbot+7fe7b81d602cc1e6b94d@syzkaller.appspotmail.com
Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Link: https://patch.msgid.link/20240903160846.20909-1-toke@redhat.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
|
|
The pwm devices for a pwm_chip are numbered starting at 0, the first hw
channel however has the number 1. While introducing a parametrised macro
to simplify register bit usage and making that offset explicit, one of
the usages was converted wrongly. This is fixed here.
Fixes: 7cea05ae1d4e ("pwm-stm32: Make use of parametrised register definitions")
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com>
Link: https://lore.kernel.org/r/20240905090627.197536-2-u.kleine-koenig@baylibre.com
Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org>
|
|
Deferred I/O requires struct page for framebuffer memory, which is
not guaranteed for all DMA ranges. We thus only install deferred I/O
if we have a framebuffer that requires it.
A reported bug affected the ipu-v3 and pl111 drivers, which have video
memory in either Normal or HighMem zones
[ 0.000000] Zone ranges:
[ 0.000000] Normal [mem 0x0000000010000000-0x000000003fffffff]
[ 0.000000] HighMem [mem 0x0000000040000000-0x000000004fffffff]
where deferred I/O only works correctly with HighMem. See the Closes
tags for bug reports.
v2:
- test if screen_buffer supports deferred I/O (Sima)
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Fixes: 808a40b69468 ("drm/fbdev-dma: Implement damage handling and deferred I/O")
Reported-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Closes: https://lore.kernel.org/all/23636953.6Emhk5qWAg@steina-w/
Reported-by: Linus Walleij <linus.walleij@linaro.org>
Closes: https://lore.kernel.org/dri-devel/CACRpkdb+hb9AGavbWpY-=uQQ0apY9en_tWJioPKf_fAbXMP4Hg@mail.gmail.com/
Tested-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Javier Martinez Canillas <javierm@redhat.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maxime Ripard <mripard@kernel.org>
Reviewed-by: Simona Vetter <simona.vetter@ffwll.ch>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240904123750.31206-1-tzimmermann@suse.de
|
|
Document what was discussed multiple times on list and various
virtual / in-person conversations. guard() being okay in functions
<= 20 LoC is a bit of my own invention. If the function is trivial
it should be fine, but feel free to disagree :)
We'll obviously revisit this guidance as time passes and we and other
subsystems get more experience.
Reviewed-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Nikolay Aleksandrov <razor@blackwall.org>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Link: https://patch.msgid.link/20240830171443.3532077-1-kuba@kernel.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
|
|
In the off-chance that waiting for the firmware to signal its booted status
timed out in the fast reset path, one must flush the cache lines for the
entire FW VM address space before reloading the regions, otherwise stale
values eventually lead to a scheduler job timeout.
Fixes: 647810ec2476 ("drm/panthor: Add the MMU/VM logical block")
Cc: stable@vger.kernel.org
Signed-off-by: Adrián Larumbe <adrian.larumbe@collabora.com>
Acked-by: Liviu Dudau <liviu.dudau@arm.com>
Reviewed-by: Steven Price <steven.price@arm.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240902130237.3440720-1-adrian.larumbe@collabora.com
|
Matthew Auld
Ashutosh Dixit
Jani Nikula
Nirmoy Das
Matthew Brost
Lucas De Marchi
Leo Li
Alex Deucher
David (Ming Qiang) Wu
Kenneth Feng
Tobias Jakobi
David Belanger
Lu Baolu
T.J. Mercier
Arnd Bergmann
Ben Skeggs
Nikita Zhandarovich
Linus Torvalds
Christian Brauner
Eric Dumazet
Arkadiusz Kubalewski
Vadim Fedorenko
Jamie Bainbridge
David Gow
Frank Li
Steven Rostedt
Vasiliy Kovalev
Zheng Yejian
Puranjay Mohan
Stefan Wahren
Pawel Dembicki
Toke Høiland-Jørgensen
Uwe Kleine-König
Thomas Zimmermann
Jakub Kicinski
Adrián Larumbe