Update to current bspec table.
Bspec: 72574
Signed-off-by: Matt Atwood <matthew.s.atwood@intel.com>
Reviewed-by: Tejas Upadhyay <tejas.upadhyay@intel.com>
Reviewed-by: Clint Taylor <Clinton.A.Taylor@intel.com>
Link: https://lore.kernel.org/r/20250520195749.371748-1-matthew.s.atwood@intel.com
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
The drm_gpusvm_find_vma_start() function is used to determine the starting
address of a CPU VMA within a specified user range. If the range does not
contain any VMA, the function returns ULONG_MAX.
v2
- Rename function as drm_gpusvm_find_vma_start() (Matthew Brost)
- mmget/mmput
v3
- s/mmget/mmget_not_zero/
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Link: https://lore.kernel.org/r/20250513040228.470682-13-himal.prasad.ghimiray@intel.com
Signed-off-by: Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com>
Add timeslicing support to GPU SVM which will guarantee the GPU a
minimum execution time on piece of physical memory before migration back
to CPU. Intended to implement strict migration policies which require
memory to be in a certain placement for correct execution.
Required for shared CPU and GPU atomics on certain devices.
Fixes: 99624bdff8 ("drm/gpusvm: Add support for GPU Shared Virtual Memory")
Cc: stable@vger.kernel.org
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com>
Link: https://lore.kernel.org/r/20250512135500.1405019-4-matthew.brost@intel.com
Mixing GPU and CPU atomics does not work unless a strict migration
policy of GPU atomics must be device memory. Enforce a policy of must be
in VRAM with a retry loop of 3 attempts, if retry loop fails abort
fault.
Removing always_migrate_to_vram modparam as we now have real migration
policy.
v2:
- Only retry migration on atomics
- Drop alway migrate modparam
v3:
- Only set vram_only on DGFX (Himal)
- Bail on get_pages failure if vram_only and retry count exceeded (Himal)
- s/vram_only/devmem_only
- Update xe_svm_range_is_valid to accept devmem_only argument
v4:
- Fix logic bug get_pages failure
v5:
- Fix commit message (Himal)
- Mention removing always_migrate_to_vram in commit message (Lucas)
- Fix xe_svm_range_is_valid to check for devmem pages
- Bail on devmem_only && !migrate_devmem (Thomas)
v6:
- Add READ_ONCE barriers for opportunistic checks (Thomas)
- Pair READ_ONCE with WRITE_ONCE (Thomas)
v7:
- Adjust comments (Thomas)
Fixes: 2f118c9491 ("drm/xe: Add SVM VRAM migration")
Cc: stable@vger.kernel.org
Signed-off-by: Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com>
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Acked-by: Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com>
Reviewed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Link: https://lore.kernel.org/r/20250512135500.1405019-3-matthew.brost@intel.com
This commit adds a new flag, devmem_only, to the drm_gpusvm structure. The
purpose of this flag is to ensure that the get_pages function allocates
memory exclusively from the device's memory. If the allocation from
device memory fails, the function will return an -EFAULT error.
Required for shared CPU and GPU atomics on certain devices.
v3:
- s/vram_only/devmem_only/
Fixes: 99624bdff8 ("drm/gpusvm: Add support for GPU Shared Virtual Memory")
Cc: stable@vger.kernel.org
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Signed-off-by: Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Link: https://lore.kernel.org/r/20250512135500.1405019-2-matthew.brost@intel.com
Fix drm_gpusvm kernel-doc (Lucas)
Driver Changes:
- Release guc ids before cancelling work (Tejas)
- Remove a duplicated pc_start_call (Rodrigo)
- Fix an incorrect assert in previous userptr fixes (Thomas)
- Remove gen11 assertions and prefixes (Lucas)
- Drop sentinels from arg to xe_rtp_process_to_src (Lucas)
- Temporarily disable D3Cold on BMG (Rodrigo)
- Fix MOCS debugfs LNCF readout (Tvrtko)
- Some ring flush cleanups (Tvrtko)
- Use unsigned int for alignment in fb pinning code (Tvrtko)
- Retry and wait longer for GuC PC start (Rodrigo)
- Recognize 3DSTATE_COARSE_PIXEL in LRC dumps (Matt Roper)
- Remove reduntant check in xe_vm_create_ioctl() (Xin)
- A bunch of SRIOV updates (Michal)
- Add stats for SVM page-faults (Francois)
- Fix an UAF (Harish)
- Expose fan speed (Raag)
- Fix exporting xe buffer objects multiple times (Tomasz)
- Apply a workaround (Vinay)
- Simplify pinned bo iteration (Thomas)
- Remove an incorrect "static" keywork (Lucas)
- Add support for separate firmware files on each GT (Lucas)
- Survivability handling fixes (Lucas)
- Allow to inject error in early probe (Lucas)
- Fix unmet direct dependencies warning (Yue Haibing)
- More error injection during probe (Francois)
- Coding style fix (Maarten)
- Additional stats support (Riana)
- Add fault injection for xe_oa_alloc_regs (Nakshrtra)
- Add a BMG PCI ID (Matt Roper)
- Some SVM fixes and preliminary SVM multi-device work (Thomas)
- Switch the migrate code from drm managed to dev managed (Aradhya)
- Fix an out-of-bounds shift when invalidating TLB (Thomas)
- Ensure fixed_slice_mode gets set after ccs_mode change (Niranjana)
- Use local fence in error path of xe_migrate_clear (Matthew Brost)
- More Workarounds (Julia)
- Define sysfs_ops on all directories (Tejas)
- Set power state to D3Cold during s2idle/s3 (Badal)
- Devcoredump output fix (John)
- Avoid plain 64-bit division (Arnd Bergmann)
- Reword a debug message (John)
- Don't print a hwconfig error message when forcing execlists (Stuart)
- Restore an error code to avoid a smatch warning (Rodrigo)
- Invalidate L3 read-only cachelines for geometry streams too (Kenneth)
- Make PPHWSP size explicit in xe_gt_lrc_size() (Gustavo)
- Add GT frequency events (Vinay)
- Fix xe_pt_stage_bind_walk kerneldoc (Thomas)
- Add a workaround (Aradhya)
- Rework pinned save/restore (Matthew Auld, Matthew Brost)
- Allow non-contig VRAM kernel BO (Matthew Auld)
- Support non-contig VRAM provisioning for SRIOV (Matthew Auld)
- Allow scratch-pages for unmapped parts of page-faulting VMs. (Oak)
- Ensure XE_BO_FLAG_CPU_ADDR_MIRROR had a unique value (Matt Roper)
- Fix taking an invalid lock on wedge (Lucas)
- Configs and documentation for survivability mode (Riana)
- Remove an unused macro (Shuicheng)
- Work around a page-fault full error (Matt Brost)
- Enable a SRIOV workaround (John)
- Bump the recommended GuC version (John)
- Allow to drop VRAM resizing (Lucas)
- Don't expose privileged debugfs files if VF (Michal)
- Don't show GGTT/LMEM debugfs files under media GT (Michal)
- Adjust ring-buffer emission for maximum possible size (Tvrtko)
- Fix notifier vs folio lock deadlock (Matthew Auld)
- Stop relying on placement for dma-buf unmap Matthew Auld)
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Merge tag 'drm-xe-next-2025-04-17' of https://gitlab.freedesktop.org/drm/xe/kernel into drm-next
Core Changes:
Fix drm_gpusvm kernel-doc (Lucas)
Driver Changes:
- Release guc ids before cancelling work (Tejas)
- Remove a duplicated pc_start_call (Rodrigo)
- Fix an incorrect assert in previous userptr fixes (Thomas)
- Remove gen11 assertions and prefixes (Lucas)
- Drop sentinels from arg to xe_rtp_process_to_src (Lucas)
- Temporarily disable D3Cold on BMG (Rodrigo)
- Fix MOCS debugfs LNCF readout (Tvrtko)
- Some ring flush cleanups (Tvrtko)
- Use unsigned int for alignment in fb pinning code (Tvrtko)
- Retry and wait longer for GuC PC start (Rodrigo)
- Recognize 3DSTATE_COARSE_PIXEL in LRC dumps (Matt Roper)
- Remove reduntant check in xe_vm_create_ioctl() (Xin)
- A bunch of SRIOV updates (Michal)
- Add stats for SVM page-faults (Francois)
- Fix an UAF (Harish)
- Expose fan speed (Raag)
- Fix exporting xe buffer objects multiple times (Tomasz)
- Apply a workaround (Vinay)
- Simplify pinned bo iteration (Thomas)
- Remove an incorrect "static" keywork (Lucas)
- Add support for separate firmware files on each GT (Lucas)
- Survivability handling fixes (Lucas)
- Allow to inject error in early probe (Lucas)
- Fix unmet direct dependencies warning (Yue Haibing)
- More error injection during probe (Francois)
- Coding style fix (Maarten)
- Additional stats support (Riana)
- Add fault injection for xe_oa_alloc_regs (Nakshrtra)
- Add a BMG PCI ID (Matt Roper)
- Some SVM fixes and preliminary SVM multi-device work (Thomas)
- Switch the migrate code from drm managed to dev managed (Aradhya)
- Fix an out-of-bounds shift when invalidating TLB (Thomas)
- Ensure fixed_slice_mode gets set after ccs_mode change (Niranjana)
- Use local fence in error path of xe_migrate_clear (Matthew Brost)
- More Workarounds (Julia)
- Define sysfs_ops on all directories (Tejas)
- Set power state to D3Cold during s2idle/s3 (Badal)
- Devcoredump output fix (John)
- Avoid plain 64-bit division (Arnd Bergmann)
- Reword a debug message (John)
- Don't print a hwconfig error message when forcing execlists (Stuart)
- Restore an error code to avoid a smatch warning (Rodrigo)
- Invalidate L3 read-only cachelines for geometry streams too (Kenneth)
- Make PPHWSP size explicit in xe_gt_lrc_size() (Gustavo)
- Add GT frequency events (Vinay)
- Fix xe_pt_stage_bind_walk kerneldoc (Thomas)
- Add a workaround (Aradhya)
- Rework pinned save/restore (Matthew Auld, Matthew Brost)
- Allow non-contig VRAM kernel BO (Matthew Auld)
- Support non-contig VRAM provisioning for SRIOV (Matthew Auld)
- Allow scratch-pages for unmapped parts of page-faulting VMs. (Oak)
- Ensure XE_BO_FLAG_CPU_ADDR_MIRROR had a unique value (Matt Roper)
- Fix taking an invalid lock on wedge (Lucas)
- Configs and documentation for survivability mode (Riana)
- Remove an unused macro (Shuicheng)
- Work around a page-fault full error (Matt Brost)
- Enable a SRIOV workaround (John)
- Bump the recommended GuC version (John)
- Allow to drop VRAM resizing (Lucas)
- Don't expose privileged debugfs files if VF (Michal)
- Don't show GGTT/LMEM debugfs files under media GT (Michal)
- Adjust ring-buffer emission for maximum possible size (Tvrtko)
- Fix notifier vs folio lock deadlock (Matthew Auld)
- Stop relying on placement for dma-buf unmap Matthew Auld)
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Thomas Hellstrom <thomas.hellstrom@linux.intel.com>
Link: https://lore.kernel.org/r/aADWaEFKVmxSnDLo@fedora
Add drm_coredump_printer_is_full which indicates if a drm printer's
output is full. Useful to short circuit coredump printing once printer's
output is full.
v2:
- s/drm_printer_is_full/drm_coredump_printer_is_full (Jani)
v3:
- Bail if not a coredump printer (Michal)
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Jonathan Cavitt <jonathan.cavitt@intel.com>
Link: https://lore.kernel.org/r/20250423171725.597955-4-matthew.brost@intel.com
This flag used to be used in the old memory tracking code, that
code got migrated into the vmwgfx driver[1], and then got removed
from the tree[2], but this piece got left behind.
[1] f07069da6b ("drm/ttm: move memory accounting into vmwgfx v4")
[2] 8aadeb8ad8 ("drm/vmwgfx: Remove the dedicated memory accounting")
Cleanup the dead code.
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
- Update GVT MAINTAINERS (Jani)
Driver Changes:
- Updates for xe3lpd display (Gustavo)
- Fix link training interrupted by HPD pulse (Imre)
- Watermark bound checks for DSC (Ankit)
- VRR Refactor and other fixes and improvements (Ankit)
- More conversions towards intel_display struct (Gustavo, Jani)
- Other clean-up patches towards a display separation (Jani)
- Maintain asciibetical order for HAS_* macros (Ankit)
- Fixes around probe/initialization (Janusz)
- Fix build and doc build issue (Yue, Rodrigo)
- DSI related fixes (Suraj, William, Jani)
- Improve DC6 entry counter (Mohammed)
- Fix xe2hpd memory type identification (Vivek)
- PSR related fixes and improvements (Animesh, Jouni)
- DP MST related fixes and improvements (Imre)
- Fix scanline_offset for LNL+/BMG+ (Ville)
- Some gvt related fixes and changes (Ville, Jani)
- Some PLL code adjustment (Ville)
- Display wa addition (Vinod)
- DRAM type logging (Lucas)
- Pimp the initial FB readout (Ville)
- Some sagv/bw cleanup (Ville)
- Remove i915_display_capabilities debugfs entry (Jani)
- Move PCH type to display caps debugfs entry (Jani)
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Merge tag 'drm-intel-next-2025-04-11' of https://gitlab.freedesktop.org/drm/i915/kernel into drm-next
Cross-subsystem Changes:
- Update GVT MAINTAINERS (Jani)
Driver Changes:
- Updates for xe3lpd display (Gustavo)
- Fix link training interrupted by HPD pulse (Imre)
- Watermark bound checks for DSC (Ankit)
- VRR Refactor and other fixes and improvements (Ankit)
- More conversions towards intel_display struct (Gustavo, Jani)
- Other clean-up patches towards a display separation (Jani)
- Maintain asciibetical order for HAS_* macros (Ankit)
- Fixes around probe/initialization (Janusz)
- Fix build and doc build issue (Yue, Rodrigo)
- DSI related fixes (Suraj, William, Jani)
- Improve DC6 entry counter (Mohammed)
- Fix xe2hpd memory type identification (Vivek)
- PSR related fixes and improvements (Animesh, Jouni)
- DP MST related fixes and improvements (Imre)
- Fix scanline_offset for LNL+/BMG+ (Ville)
- Some gvt related fixes and changes (Ville, Jani)
- Some PLL code adjustment (Ville)
- Display wa addition (Vinod)
- DRAM type logging (Lucas)
- Pimp the initial FB readout (Ville)
- Some sagv/bw cleanup (Ville)
- Remove i915_display_capabilities debugfs entry (Jani)
- Move PCH type to display caps debugfs entry (Jani)
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://lore.kernel.org/r/Z_kTqPX5Mjruq1pL@intel.com
drm-misc-next for v6.16-rc1:
UAPI Changes:
- Add ASAHI uapi header!
- Add apple fourcc modifiers.
- Add capset virtio definitions to UAPI.
- Extend EXPORT_SYNC_FILE for timeline syncobjs.
Cross-subsystem Changes:
- Adjust DMA-BUF sg handling to not cache map on attach.
- Update drm/ci, hlcdc, virtio, maintainers.
- Update fbdev todo.
- Allow setting dma-device for dma-buf import.
- Export efi_mem_desc_lookup to make efidrm build as a module.
Core Changes:
- Update drm scheduler docs.
- Use the correct resv object in TTM delayed destroy.
- Fix compiler warning with panic qr code, and other small fixes.
- drm/ci updates.
- Add debugfs file for listing all bridges.
- Small fixes to drm/client, ttm tests.
- Add documentation to display/hdmi.
- Add kunit tests for bridges.
- Dont fail managed device probing if connector polling fails.
- Create Kconfig.debug for drm core.
- Add tests for the drm scheduler.
- Add and use new access helpers for DPCPD.
- Add generic and optimized conversions for format-helper.
- Begin refcounting panel for improving lifetime handling.
- Unify simpledrm and ofdrm sysfb, and add extra features.
- Split hdmi audio in bridge to make DP audio work.
Driver Changes:
- Convert drivers to use devm_platform_ioremap_resource().
- Assorted small fixes to imx/legacy-bridg, gma500, pl111, nouveau, vc4,
vmwgfx, ast, mxsfb, xlnx, accel/qaic, v3d, bridge/imx8qxp-ldb, ofdrm,
bridge/fsl-ldb, udl, bridge/ti-sn65dsi86, bridge/anx7625, cirrus-qemu,
bridge/cdns-dsi, panel/sharp, panel/himax, bridge/sil902x, renesas,
imagination, various panels.
- Allow attaching more display to vkms.
- Add Powertip PH128800T004-ZZA01 panel.
- Add rotation quirk for ZOTAC panel.
- Convert bridge/tc358775 to atomic.
- Remove deprecated panel calls from synaptics, novatek, samsung panels.
- Refactor shmem helper page pinning and accel drivers using it.
- Add dmabuf support to accel/amdxdna.
- Use 4k page table format for panfrost/mediatek.
- Add common powerup/down dp link helper and use it.
- Assorted compiler warning fixes.
- Support dma-buf import for renesas
Signed-off-by: Dave Airlie <airlied@redhat.com>
# Conflicts:
# include/drm/drm_kunit_helpers.h
From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://lore.kernel.org/r/e147ff95-697b-4067-9e2e-7cbd424e162a@linux.intel.com
tests:
- Clean up struct drm_display_mode in various places
i915:
- Fix scanline offset for LNL+ and BMG+
- Fix GVT unterminated-string-initialization build warning
- Fix DP rate limit when sink doesn't support TPS4
- Handle GDDR + ECC memory type detection
- Fix VRR parameter change check
- Fix fence not released on early probe errors
- Disable render power gating during live selftests
xe:
- Add another BMG PCI ID
- Fix UAFs on migration paths
- Fix shift-out-of-bounds access on TLB invalidation
- Ensure ccs_mode is correctly set on gt reset
- Extend some HW workarounds to Xe3
- Fix PM runtime get/put on sysfs files
- Fix u64 division on 32b
- Fix flickering due to missing L3 invalidations
- Fix missing error code return
amdgpu:
- MES FW version caching fixes
- Only use GTT as a fallback if we already have a backing store
- dma_buf fix
- IP discovery fix
- Replay and PSR with VRR fix
- DC FP fixes
- eDP fixes
- KIQ TLB invalidate fix
- Enable dmem groups support
- Allow pinning VRAM dma bufs if imports can do P2P
- Workload profile fixes
- Prevent possible division by 0 in fan handling
amdkfd:
- Queue reset fixes
imagination:
- Fix overflow
- Fix use-after-free
ivpu:
- Fix suspend/resume
nouveau:
- Do not deref dangling pointer
rockchip:
- Set DP/HDMI registers correctly
udmabuf:
- Fix overflow
virtgpu:
- Set reservation lock on dma-buf import
- Fix error handling in prepare_fb
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Merge tag 'drm-fixes-2025-04-11-1' of https://gitlab.freedesktop.org/drm/kernel
Pull drm fixes from Dave Airlie:
"Weekly fixes, as expected it has a bit more in it than probably usual
for rc2. amdgpu/xe/i915 lead the way with fixes all over for a bunch
of other drivers. Nothing major stands out from what I can see.
tests:
- Clean up struct drm_display_mode in various places
i915:
- Fix scanline offset for LNL+ and BMG+
- Fix GVT unterminated-string-initialization build warning
- Fix DP rate limit when sink doesn't support TPS4
- Handle GDDR + ECC memory type detection
- Fix VRR parameter change check
- Fix fence not released on early probe errors
- Disable render power gating during live selftests
xe:
- Add another BMG PCI ID
- Fix UAFs on migration paths
- Fix shift-out-of-bounds access on TLB invalidation
- Ensure ccs_mode is correctly set on gt reset
- Extend some HW workarounds to Xe3
- Fix PM runtime get/put on sysfs files
- Fix u64 division on 32b
- Fix flickering due to missing L3 invalidations
- Fix missing error code return
amdgpu:
- MES FW version caching fixes
- Only use GTT as a fallback if we already have a backing store
- dma_buf fix
- IP discovery fix
- Replay and PSR with VRR fix
- DC FP fixes
- eDP fixes
- KIQ TLB invalidate fix
- Enable dmem groups support
- Allow pinning VRAM dma bufs if imports can do P2P
- Workload profile fixes
- Prevent possible division by 0 in fan handling
amdkfd:
- Queue reset fixes
imagination:
- Fix overflow
- Fix use-after-free
ivpu:
- Fix suspend/resume
nouveau:
- Do not deref dangling pointer
rockchip:
- Set DP/HDMI registers correctly
udmabuf:
- Fix overflow
virtgpu:
- Set reservation lock on dma-buf import
- Fix error handling in prepare_fb"
* tag 'drm-fixes-2025-04-11-1' of https://gitlab.freedesktop.org/drm/kernel: (58 commits)
drm/rockchip: dw_hdmi_qp: Fix io init for dw_hdmi_qp_rockchip_resume
drm/rockchip: vop2: Fix interface enable/mux setting of DP1 on rk3588
drm/amdgpu/mes12: optimize MES pipe FW version fetching
drm/amd/pm/smu11: Prevent division by zero
drm/amdgpu: cancel gfx idle work in device suspend for s0ix
drm/amd/display: pause the workload setting in dm
drm/amdgpu/pm/swsmu: implement pause workload profile
drm/amdgpu/pm: add workload profile pause helper
drm/i915/huc: Fix fence not released on early probe errors
drm/i915/vrr: Add vrr.vsync_{start, end} in vrr_params_changed
drm/tests: probe-helper: Fix drm_display_mode memory leak
drm/tests: modes: Fix drm_display_mode memory leak
drm/tests: modes: Fix drm_display_mode memory leak
drm/tests: cmdline: Fix drm_display_mode memory leak
drm/tests: modeset: Fix drm_display_mode memory leak
drm/tests: modeset: Fix drm_display_mode memory leak
drm/tests: helpers: Create kunit helper to destroy a drm_display_mode
drm/xe: Restore EIO errno return when GuC PC start fails
drm/xe: Invalidate L3 read-only cachelines for geometry streams too
drm/xe: avoid plain 64-bit division
...
- Fix __free_event() corner case splat
- Fix false-positive uprobes related lockdep
splat on CONFIG_PREEMPT_RT=y kernels
- Fix a complicated perf sigtrap race that may
result in hangs
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'perf-urgent-2025-04-10' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull misc perf events fixes from Ingo Molnar:
- Fix __free_event() corner case splat
- Fix false-positive uprobes related lockdep splat on
CONFIG_PREEMPT_RT=y kernels
- Fix a complicated perf sigtrap race that may result in hangs
* tag 'perf-urgent-2025-04-10' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf: Fix hang while freeing sigtrap event
uprobes: Avoid false-positive lockdep splat on CONFIG_PREEMPT_RT=y in the ri_timer() uprobe timer callback, use raw_write_seqcount_*()
perf/core: Fix WARN_ON(!ctx) in __free_event() for partial init
Current release - regressions:
- core: hold instance lock during NETDEV_CHANGE
- rtnetlink: fix bad unlock balance in do_setlink().
- ipv6:
- fix null-ptr-deref in addrconf_add_ifaddr().
- align behavior across nexthops during path selection
Previous releases - regressions:
- sctp: prevent transport UaF in sendmsg
- mptcp: only inc MPJoinAckHMacFailure for HMAC failures
Previous releases - always broken:
- sched:
- make ->qlen_notify() idempotent
- ensure sufficient space when sending filter netlink notifications
- sch_sfq: really don't allow 1 packet limit
- netfilter: fix incorrect avx2 match of 5th field octet
- tls: explicitly disallow disconnect
- eth: octeontx2-pf: fix VF root node parent queue priority
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Merge tag 'net-6.15-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Paolo Abeni:
"Including fixes from netfilter.
Current release - regressions:
- core: hold instance lock during NETDEV_CHANGE
- rtnetlink: fix bad unlock balance in do_setlink()
- ipv6:
- fix null-ptr-deref in addrconf_add_ifaddr()
- align behavior across nexthops during path selection
Previous releases - regressions:
- sctp: prevent transport UaF in sendmsg
- mptcp: only inc MPJoinAckHMacFailure for HMAC failures
Previous releases - always broken:
- sched:
- make ->qlen_notify() idempotent
- ensure sufficient space when sending filter netlink notifications
- sch_sfq: really don't allow 1 packet limit
- netfilter: fix incorrect avx2 match of 5th field octet
- tls: explicitly disallow disconnect
- eth: octeontx2-pf: fix VF root node parent queue priority"
* tag 'net-6.15-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (38 commits)
ethtool: cmis_cdb: Fix incorrect read / write length extension
selftests: netfilter: add test case for recent mismatch bug
nft_set_pipapo: fix incorrect avx2 match of 5th field octet
net: ppp: Add bound checking for skb data on ppp_sync_txmung
net: Fix null-ptr-deref by sock_lock_init_class_and_name() and rmmod.
ipv6: Align behavior across nexthops during path selection
net: phy: allow MDIO bus PM ops to start/stop state machine for phylink-controlled PHY
net: phy: move phy_link_change() prior to mdio_bus_phy_may_suspend()
selftests/tc-testing: sfq: check that a derived limit of 1 is rejected
net_sched: sch_sfq: move the limit validation
net_sched: sch_sfq: use a temporary work area for validating configuration
net: libwx: handle page_pool_dev_alloc_pages error
selftests: mptcp: validate MPJoin HMacFailure counters
mptcp: only inc MPJoinAckHMacFailure for HMAC failures
rtnetlink: Fix bad unlock balance in do_setlink().
net: ethtool: Don't call .cleanup_data when prepare_data fails
tc: Ensure we have enough buffer space when sending filter netlink notifications
net: libwx: Fix the wrong Rx descriptor field
octeontx2-pf: qos: fix VF root node parent queue index
selftests: tls: check that disconnect does nothing
...
- fix resource handling in gpio-tegra186
- fix wakeup source leaks in gpio-mpc8xxx and gpio-zynq
- fix minor issues with some GPIO OF quirks
- deprecate GPIOD_FLAGS_BIT_NONEXCLUSIVE and devm_gpiod_unhinge()
symbols and add a TODO task to track replacing them with a better
solution
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Merge tag 'gpio-fixes-for-v6.15-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux
Pull gpio fixes from Bartosz Golaszewski:
- fix resource handling in gpio-tegra186
- fix wakeup source leaks in gpio-mpc8xxx and gpio-zynq
- fix minor issues with some GPIO OF quirks
- deprecate GPIOD_FLAGS_BIT_NONEXCLUSIVE and devm_gpiod_unhinge()
symbols and add a TODO task to track replacing them with a better
solution
* tag 'gpio-fixes-for-v6.15-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
gpiolib: of: Move Atmel HSMCI quirk up out of the regulator comment
gpiolib: of: Fix the choice for Ingenic NAND quirk
gpio: zynq: Fix wakeup source leaks on device unbind
gpio: mpc8xxx: Fix wakeup source leaks on device unbind
gpio: TODO: track the removal of regulator-related workarounds
MAINTAINERS: add more keywords for the GPIO subsystem entry
gpio: deprecate devm_gpiod_unhinge()
gpio: deprecate the GPIOD_FLAGS_BIT_NONEXCLUSIVE flag
gpio: tegra186: fix resource handling in ACPI probe path
versions as well as the fix of the Qpic Makefile which was wrong in the
first place.
There are also two smaller fixes about a missing error and status check.
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Merge tag 'mtd/fixes-for-6.15-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux
Pull mtd fixes from Miquel Raynal:
"Two important fixes: the build of the SPI NAND layer with old GCC
versions as well as the fix of the Qpic Makefile which was wrong in
the first place.
There are also two smaller fixes about a missing error and status
check"
* tag 'mtd/fixes-for-6.15-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux:
mtd: spinand: Fix build with gcc < 7.5
mtd: rawnand: Add status chack in r852_ready()
mtd: inftlcore: Add error check for inftl_read_oob()
mtd: nand: Drop explicit test for built-in CONFIG_SPI_QPIC_SNAND
Compiling the kernel with gcc12.3 W=2 results in shadowing warnings:
warning: declaration of '__pptr' shadows a previous local [-Wshadow]
const struct { type x; } __packed *__pptr = (typeof(__pptr))(ptr);
note: in definition of macro '__put_unaligned_t'
__pptr->x = (val);
note: in expansion of macro '__get_unaligned_t'
__put_unaligned_t(type, __get_unaligned_t(type, src), dst);
__get_unaligned_t() and __put_unaligned_t() use a local variable named
'__pptr', which can lead to variable shadowing when these macros are used in
the same scope. This results in a -Wshadow warning during compilation.
To address this issue, rename the local variables within the macros to
ensure uniqueness.
Signed-off-by: Peng Jiang <jiang.peng9@zte.com.cn>
Signed-off-by: Shao Mingyin <shao.mingyin@zte.com.cn>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/all/20250324191230477zpGtgIRSH4mEHdtxGtgx9@zte.com.cn
When I ran the repro [0] and waited a few seconds, I observed two
LOCKDEP splats: a warning immediately followed by a null-ptr-deref. [1]
Reproduction Steps:
1) Mount CIFS
2) Add an iptables rule to drop incoming FIN packets for CIFS
3) Unmount CIFS
4) Unload the CIFS module
5) Remove the iptables rule
At step 3), the CIFS module calls sock_release() for the underlying
TCP socket, and it returns quickly. However, the socket remains in
FIN_WAIT_1 because incoming FIN packets are dropped.
At this point, the module's refcnt is 0 while the socket is still
alive, so the following rmmod command succeeds.
# ss -tan
State Recv-Q Send-Q Local Address:Port Peer Address:Port
FIN-WAIT-1 0 477 10.0.2.15:51062 10.0.0.137:445
# lsmod | grep cifs
cifs 1159168 0
This highlights a discrepancy between the lifetime of the CIFS module
and the underlying TCP socket. Even after CIFS calls sock_release()
and it returns, the TCP socket does not die immediately in order to
close the connection gracefully.
While this is generally fine, it causes an issue with LOCKDEP because
CIFS assigns a different lock class to the TCP socket's sk->sk_lock
using sock_lock_init_class_and_name().
Once an incoming packet is processed for the socket or a timer fires,
sk->sk_lock is acquired.
Then, LOCKDEP checks the lock context in check_wait_context(), where
hlock_class() is called to retrieve the lock class. However, since
the module has already been unloaded, hlock_class() logs a warning
and returns NULL, triggering the null-ptr-deref.
If LOCKDEP is enabled, we must ensure that a module calling
sock_lock_init_class_and_name() (CIFS, NFS, etc) cannot be unloaded
while such a socket is still alive to prevent this issue.
Let's hold the module reference in sock_lock_init_class_and_name()
and release it when the socket is freed in sk_prot_free().
Note that sock_lock_init() clears sk->sk_owner for svc_create_socket()
that calls sock_lock_init_class_and_name() for a listening socket,
which clones a socket by sk_clone_lock() without GFP_ZERO.
[0]:
CIFS_SERVER="10.0.0.137"
CIFS_PATH="//${CIFS_SERVER}/Users/Administrator/Desktop/CIFS_TEST"
DEV="enp0s3"
CRED="/root/WindowsCredential.txt"
MNT=$(mktemp -d /tmp/XXXXXX)
mount -t cifs ${CIFS_PATH} ${MNT} -o vers=3.0,credentials=${CRED},cache=none,echo_interval=1
iptables -A INPUT -s ${CIFS_SERVER} -j DROP
for i in $(seq 10);
do
umount ${MNT}
rmmod cifs
sleep 1
done
rm -r ${MNT}
iptables -D INPUT -s ${CIFS_SERVER} -j DROP
[1]:
DEBUG_LOCKS_WARN_ON(1)
WARNING: CPU: 10 PID: 0 at kernel/locking/lockdep.c:234 hlock_class (kernel/locking/lockdep.c:234 kernel/locking/lockdep.c:223)
Modules linked in: cifs_arc4 nls_ucs2_utils cifs_md4 [last unloaded: cifs]
CPU: 10 UID: 0 PID: 0 Comm: swapper/10 Not tainted 6.14.0 #36
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014
RIP: 0010:hlock_class (kernel/locking/lockdep.c:234 kernel/locking/lockdep.c:223)
...
Call Trace:
<IRQ>
__lock_acquire (kernel/locking/lockdep.c:4853 kernel/locking/lockdep.c:5178)
lock_acquire (kernel/locking/lockdep.c:469 kernel/locking/lockdep.c:5853 kernel/locking/lockdep.c:5816)
_raw_spin_lock_nested (kernel/locking/spinlock.c:379)
tcp_v4_rcv (./include/linux/skbuff.h:1678 ./include/net/tcp.h:2547 net/ipv4/tcp_ipv4.c:2350)
...
BUG: kernel NULL pointer dereference, address: 00000000000000c4
PF: supervisor read access in kernel mode
PF: error_code(0x0000) - not-present page
PGD 0
Oops: Oops: 0000 [#1] PREEMPT SMP NOPTI
CPU: 10 UID: 0 PID: 0 Comm: swapper/10 Tainted: G W 6.14.0 #36
Tainted: [W]=WARN
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014
RIP: 0010:__lock_acquire (kernel/locking/lockdep.c:4852 kernel/locking/lockdep.c:5178)
Code: 15 41 09 c7 41 8b 44 24 20 25 ff 1f 00 00 41 09 c7 8b 84 24 a0 00 00 00 45 89 7c 24 20 41 89 44 24 24 e8 e1 bc ff ff 4c 89 e7 <44> 0f b6 b8 c4 00 00 00 e8 d1 bc ff ff 0f b6 80 c5 00 00 00 88 44
RSP: 0018:ffa0000000468a10 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ff1100010091cc38 RCX: 0000000000000027
RDX: ff1100081f09ca48 RSI: 0000000000000001 RDI: ff1100010091cc88
RBP: ff1100010091c200 R08: ff1100083fe6e228 R09: 00000000ffffbfff
R10: ff1100081eca0000 R11: ff1100083fe10dc0 R12: ff1100010091cc88
R13: 0000000000000001 R14: 0000000000000000 R15: 00000000000424b1
FS: 0000000000000000(0000) GS:ff1100081f080000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000000000c4 CR3: 0000000002c4a003 CR4: 0000000000771ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe07f0 DR7: 0000000000000400
PKRU: 55555554
Call Trace:
<IRQ>
lock_acquire (kernel/locking/lockdep.c:469 kernel/locking/lockdep.c:5853 kernel/locking/lockdep.c:5816)
_raw_spin_lock_nested (kernel/locking/spinlock.c:379)
tcp_v4_rcv (./include/linux/skbuff.h:1678 ./include/net/tcp.h:2547 net/ipv4/tcp_ipv4.c:2350)
ip_protocol_deliver_rcu (net/ipv4/ip_input.c:205 (discriminator 1))
ip_local_deliver_finish (./include/linux/rcupdate.h:878 net/ipv4/ip_input.c:234)
ip_sublist_rcv_finish (net/ipv4/ip_input.c:576)
ip_list_rcv_finish (net/ipv4/ip_input.c:628)
ip_list_rcv (net/ipv4/ip_input.c:670)
__netif_receive_skb_list_core (net/core/dev.c:5939 net/core/dev.c:5986)
netif_receive_skb_list_internal (net/core/dev.c:6040 net/core/dev.c:6129)
napi_complete_done (./include/linux/list.h:37 ./include/net/gro.h:519 ./include/net/gro.h:514 net/core/dev.c:6496)
e1000_clean (drivers/net/ethernet/intel/e1000/e1000_main.c:3815)
__napi_poll.constprop.0 (net/core/dev.c:7191)
net_rx_action (net/core/dev.c:7262 net/core/dev.c:7382)
handle_softirqs (kernel/softirq.c:561)
__irq_exit_rcu (kernel/softirq.c:596 kernel/softirq.c:435 kernel/softirq.c:662)
irq_exit_rcu (kernel/softirq.c:680)
common_interrupt (arch/x86/kernel/irq.c:280 (discriminator 14))
</IRQ>
<TASK>
asm_common_interrupt (./arch/x86/include/asm/idtentry.h:693)
RIP: 0010:default_idle (./arch/x86/include/asm/irqflags.h:37 ./arch/x86/include/asm/irqflags.h:92 arch/x86/kernel/process.c:744)
Code: 4c 01 c7 4c 29 c2 e9 72 ff ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa eb 07 0f 00 2d c3 2b 15 00 fb f4 <fa> c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90
RSP: 0018:ffa00000000ffee8 EFLAGS: 00000202
RAX: 000000000000640b RBX: ff1100010091c200 RCX: 0000000000061aa4
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff812f30c5
RBP: 000000000000000a R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000002 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
? do_idle (kernel/sched/idle.c:186 kernel/sched/idle.c:325)
default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118)
do_idle (kernel/sched/idle.c:186 kernel/sched/idle.c:325)
cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1))
start_secondary (arch/x86/kernel/smpboot.c:315)
common_startup_64 (arch/x86/kernel/head_64.S:421)
</TASK>
Modules linked in: cifs_arc4 nls_ucs2_utils cifs_md4 [last unloaded: cifs]
CR2: 00000000000000c4
Fixes: ed07536ed6 ("[PATCH] lockdep: annotate nfs/nfsd in-kernel sockets")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Cc: stable@vger.kernel.org
Link: https://patch.msgid.link/20250407163313.22682-1-kuniyu@amazon.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Fixes tool to report test count in case of a late test plan when tests
are specified before the test plan. Fixes spelling error in the commit
that went into 6.15-rc1.
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Merge tag 'linux_kselftest-kunit-6.15-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
Pull kunit fixes from Shuah Khan:
- Fix the tool to report test count in case of a late test plan when
tests are specified before the test plan
- Fix spelling error
* tag 'linux_kselftest-kunit-6.15-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
kunit: Spelling s/slowm/slow/
kunit: tool: fix count of tests if late test plan
This adds the UAPI for the Asahi driver targeting the GPU in the Apple
M1 and M2 series systems on chip. The UAPI design is based on other
modern Vulkan-capable drivers, including Xe and Panthor. Memory
management is based on explicit VM management. Synchronization is
exclusively explicit sync.
This UAPI is validated against our open source Mesa stack, which is
fully conformant to the OpenGL 4.6, OpenGL ES 3.2, OpenCL 3.0, and
Vulkan 1.4 standards. The Vulkan driver supports sparse, exercising the
VM_BIND mechanism.
This patch adds the standalone UAPI header. It is implemented by an open
source DRM driver written in Rust. We fully intend to upstream this
driver when possible. However, as a production graphics driver, it
depends on a significant number of Rust abstractions that will take a
long time to upstream. In the mean time, our userspace is upstream in
Mesa but is not allowed to probe with upstream Mesa as the UAPI is not
yet reviewed and merged in the upstream kernel. Although we ship a
patched Mesa in Fedora Asahi Remix, any containers shipping upstream
Mesa builds are broken for our users, including upstream Flatpak and
Waydroid runtimes. Additionally, it forces us to maintain forks of Mesa
and virglrenderer, which complicates bisects.
The intention in sending out this patch is for this UAPI to be
thoroughly reviewed. Once we as the DRM community are satisfied with the
UAPI, this header lands signifying that the UAPI is stable and must only
be evolved in backwards-compatible ways; it will be the UAPI implemented
in the DRM driver that eventually lands upstream. That promise lets us
enable upstream Mesa, solving all these issues while the upstream Rust
abstractions are developed.
https://github.com/alyssarosenzweig/linux/commits/agx-uapi-v7 contains
the DRM driver implementing this proposed UAPI.
https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/33984 contains
the Mesa patches to implement this proposed UAPI.
That Linux and Mesa branch together give a complete graphics/compute
stack on top of this UAPI.
Co-developed-by: Asahi Lina <lina@asahilina.net>
Signed-off-by: Asahi Lina <lina@asahilina.net>
Acked-by: Simona Vetter <simona.vetter@ffwll.ch>
Reviewed-by: Neal Gompa <neal@gompa.dev>
Reviewed-by: Janne Grunau <j@jannau.net>
Reviewed-by: Faith Ekstrand <faith.ekstrand@collabora.com>
Link: https://lore.kernel.org/r/20250408-agx-uapi-v7-1-ad122d4f7324@rosenzweig.io
Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
* Rework heuristics for resolving the fault IPA (HPFAR_EL2 v. re-walk
stage-1 page tables) to align with the architecture. This avoids
possibly taking an SEA at EL2 on the page table walk or using an
architecturally UNKNOWN fault IPA.
* Use acquire/release semantics in the KVM FF-A proxy to avoid reading
a stale value for the FF-A version.
* Fix KVM guest driver to match PV CPUID hypercall ABI.
* Use Inner Shareable Normal Write-Back mappings at stage-1 in KVM
selftests, which is the only memory type for which atomic
instructions are architecturally guaranteed to work.
s390:
* Don't use %pK for debug printing and tracepoints.
x86:
* Use a separate subclass when acquiring KVM's per-CPU posted interrupts
wakeup lock in the scheduled out path, i.e. when adding a vCPU on
the list of vCPUs to wake, to workaround a false positive deadlock.
The schedule out code runs with a scheduler lock that the wakeup
handler takes in the opposite order; but it does so with IRQs disabled
and cannot run concurrently with a wakeup.
* Explicitly zero-initialize on-stack CPUID unions
* Allow building irqbypass.ko as as module when kvm.ko is a module
* Wrap relatively expensive sanity check with KVM_PROVE_MMU
* Acquire SRCU in KVM_GET_MP_STATE to protect guest memory accesses
selftests:
* Add more scenarios to the MONITOR/MWAIT test.
* Add option to rseq test to override /dev/cpu_dma_latency
* Bring list of exit reasons up to date
* Cleanup Makefile to list once tests that are valid on all architectures
Other:
* Documentation fixes
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull kvm fixes from Paolo Bonzini:
"ARM:
- Rework heuristics for resolving the fault IPA (HPFAR_EL2 v. re-walk
stage-1 page tables) to align with the architecture. This avoids
possibly taking an SEA at EL2 on the page table walk or using an
architecturally UNKNOWN fault IPA
- Use acquire/release semantics in the KVM FF-A proxy to avoid
reading a stale value for the FF-A version
- Fix KVM guest driver to match PV CPUID hypercall ABI
- Use Inner Shareable Normal Write-Back mappings at stage-1 in KVM
selftests, which is the only memory type for which atomic
instructions are architecturally guaranteed to work
s390:
- Don't use %pK for debug printing and tracepoints
x86:
- Use a separate subclass when acquiring KVM's per-CPU posted
interrupts wakeup lock in the scheduled out path, i.e. when adding
a vCPU on the list of vCPUs to wake, to workaround a false positive
deadlock. The schedule out code runs with a scheduler lock that the
wakeup handler takes in the opposite order; but it does so with
IRQs disabled and cannot run concurrently with a wakeup
- Explicitly zero-initialize on-stack CPUID unions
- Allow building irqbypass.ko as as module when kvm.ko is a module
- Wrap relatively expensive sanity check with KVM_PROVE_MMU
- Acquire SRCU in KVM_GET_MP_STATE to protect guest memory accesses
selftests:
- Add more scenarios to the MONITOR/MWAIT test
- Add option to rseq test to override /dev/cpu_dma_latency
- Bring list of exit reasons up to date
- Cleanup Makefile to list once tests that are valid on all
architectures
Other:
- Documentation fixes"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (26 commits)
KVM: arm64: Use acquire/release to communicate FF-A version negotiation
KVM: arm64: selftests: Explicitly set the page attrs to Inner-Shareable
KVM: arm64: selftests: Introduce and use hardware-definition macros
KVM: VMX: Use separate subclasses for PI wakeup lock to squash false positive
KVM: VMX: Assert that IRQs are disabled when putting vCPU on PI wakeup list
KVM: x86: Explicitly zero-initialize on-stack CPUID unions
KVM: Allow building irqbypass.ko as as module when kvm.ko is a module
KVM: x86/mmu: Wrap sanity check on number of TDP MMU pages with KVM_PROVE_MMU
KVM: selftests: Add option to rseq test to override /dev/cpu_dma_latency
KVM: x86: Acquire SRCU in KVM_GET_MP_STATE to protect guest memory accesses
Documentation: kvm: remove KVM_CAP_MIPS_TE
Documentation: kvm: organize capabilities in the right section
Documentation: kvm: fix some definition lists
Documentation: kvm: drop "Capability" heading from capabilities
Documentation: kvm: give correct name for KVM_CAP_SPAPR_MULTITCE
Documentation: KVM: KVM_GET_SUPPORTED_CPUID now exposes TSC_DEADLINE
selftests: kvm: list once tests that are valid on all architectures
selftests: kvm: bring list of exit reasons up to date
selftests: kvm: revamp MONITOR/MWAIT tests
KVM: arm64: Don't translate FAR if invalid/unsafe
...
- A number of cpuset remote partition related fixes and cleanups along with
selftest updates.
- A change from this merge window made cgroup_rstat_updated_list() called
outside cgroup_rstat_lock leading to list corruptions. Fix it by
relocating the call inside the lock.
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Merge tag 'cgroup-for-6.15-rc1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
Pull cgroup fixes from Tejun Heo:
- A number of cpuset remote partition related fixes and cleanups along
with selftest updates.
- A change from this merge window made cgroup_rstat_updated_list()
called outside cgroup_rstat_lock leading to list corruptions. Fix it
by relocating the call inside the lock.
* tag 'cgroup-for-6.15-rc1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
cgroup/cpuset: Fix race between newly created partition and dying one
cgroup: rstat: call cgroup_rstat_updated_list with cgroup_rstat_lock
selftest/cgroup: Add a remote partition transition test to test_cpuset_prs.sh
selftest/cgroup: Clean up and restructure test_cpuset_prs.sh
selftest/cgroup: Update test_cpuset_prs.sh to use | as effective CPUs and state separator
cgroup/cpuset: Remove unneeded goto in sched_partition_write() and rename it
cgroup/cpuset: Code cleanup and comment update
cgroup/cpuset: Don't allow creation of local partition over a remote one
cgroup/cpuset: Remove remote_partition_check() & make update_cpumasks_hier() handle remote partition
cgroup/cpuset: Fix error handling in remote_partition_disable()
cgroup/cpuset: Fix incorrect isolated_cpus update in update_parent_effective_cpumask()
Perf can hang while freeing a sigtrap event if a related deferred
signal hadn't managed to be sent before the file got closed:
perf_event_overflow()
task_work_add(perf_pending_task)
fput()
task_work_add(____fput())
task_work_run()
____fput()
perf_release()
perf_event_release_kernel()
_free_event()
perf_pending_task_sync()
task_work_cancel() -> FAILED
rcuwait_wait_event()
Once task_work_run() is running, the list of pending callbacks is
removed from the task_struct and from this point on task_work_cancel()
can't remove any pending and not yet started work items, hence the
task_work_cancel() failure and the hang on rcuwait_wait_event().
Task work could be changed to remove one work at a time, so a work
running on the current task can always cancel a pending one, however
the wait / wake design is still subject to inverted dependencies when
remote targets are involved, as pictured by Oleg:
T1 T2
fd = perf_event_open(pid => T2->pid); fd = perf_event_open(pid => T1->pid);
close(fd) close(fd)
<IRQ> <IRQ>
perf_event_overflow() perf_event_overflow()
task_work_add(perf_pending_task) task_work_add(perf_pending_task)
</IRQ> </IRQ>
fput() fput()
task_work_add(____fput()) task_work_add(____fput())
task_work_run() task_work_run()
____fput() ____fput()
perf_release() perf_release()
perf_event_release_kernel() perf_event_release_kernel()
_free_event() _free_event()
perf_pending_task_sync() perf_pending_task_sync()
rcuwait_wait_event() rcuwait_wait_event()
Therefore the only option left is to acquire the event reference count
upon queueing the perf task work and release it from the task work, just
like it was done before 3a5465418f ("perf: Fix event leak upon exec and file release")
but without the leaks it fixed.
Some adjustments are necessary to make it work:
* A child event might dereference its parent upon freeing. Care must be
taken to release the parent last.
* Some places assuming the event doesn't have any reference held and
therefore can be freed right away must instead put the reference and
let the reference counting to its job.
Reported-by: "Yi Lai" <yi1.lai@linux.intel.com>
Closes: https://lore.kernel.org/all/Zx9Losv4YcJowaP%2F@ly-workstation/
Reported-by: syzbot+3c4321e10eea460eb606@syzkaller.appspotmail.com
Closes: https://lore.kernel.org/all/673adf75.050a0220.87769.0024.GAE@google.com/
Fixes: 3a5465418f ("perf: Fix event leak upon exec and file release")
Signed-off-by: Frederic Weisbecker <frederic@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20250304135446.18905-1-frederic@kernel.org
A number of test suites call functions that expect the returned
drm_display_mode to be destroyed eventually.
However, none of the tests called drm_mode_destroy, which results in a
memory leak.
Since drm_mode_destroy takes two pointers as argument, we can't use a
kunit wrapper. Let's just create a helper every test suite can use.
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://lore.kernel.org/r/20250408-drm-kunit-drm-display-mode-memleak-v1-1-996305a2e75a@kernel.org
Signed-off-by: Maxime Ripard <mripard@kernel.org>
sctp_sendmsg() re-uses associations and transports when possible by
doing a lookup based on the socket endpoint and the message destination
address, and then sctp_sendmsg_to_asoc() sets the selected transport in
all the message chunks to be sent.
There's a possible race condition if another thread triggers the removal
of that selected transport, for instance, by explicitly unbinding an
address with setsockopt(SCTP_SOCKOPT_BINDX_REM), after the chunks have
been set up and before the message is sent. This can happen if the send
buffer is full, during the period when the sender thread temporarily
releases the socket lock in sctp_wait_for_sndbuf().
This causes the access to the transport data in
sctp_outq_select_transport(), when the association outqueue is flushed,
to result in a use-after-free read.
This change avoids this scenario by having sctp_transport_free() signal
the freeing of the transport, tagging it as "dead". In order to do this,
the patch restores the "dead" bit in struct sctp_transport, which was
removed in
commit 47faa1e4c5 ("sctp: remove the dead field of sctp_transport").
Then, in the scenario where the sender thread has released the socket
lock in sctp_wait_for_sndbuf(), the bit is checked again after
re-acquiring the socket lock to detect the deletion. This is done while
holding a reference to the transport to prevent it from being freed in
the process.
If the transport was deleted while the socket lock was relinquished,
sctp_sendmsg_to_asoc() will return -EAGAIN to let userspace retry the
send.
The bug was found by a private syzbot instance (see the error report [1]
and the C reproducer that triggers it [2]).
Link: https://people.igalia.com/rcn/kernel_logs/20250402__KASAN_slab-use-after-free_Read_in_sctp_outq_select_transport.txt [1]
Link: https://people.igalia.com/rcn/kernel_logs/20250402__KASAN_slab-use-after-free_Read_in_sctp_outq_select_transport__repro.c [2]
Cc: stable@vger.kernel.org
Fixes: df132eff46 ("sctp: clear the transport of some out_chunk_list chunks in sctp_assoc_rm_peer")
Suggested-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: Ricardo Cañuelo Navarro <rcn@igalia.com>
Acked-by: Xin Long <lucien.xin@gmail.com>
Link: https://patch.msgid.link/20250404-kasan_slab-use-after-free_read_in_sctp_outq_select_transport__20250404-v1-1-5ce4a0b78ef2@igalia.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
The non-exclusive GPIO request flag looks like a functional feature but
is in fact a workaround for a corner-case that got out of hand. It should
be removed so deprecate it officially so that nobody uses it anymore.
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250401-gpio-todo-remove-nonexclusive-v2-1-7c1380797b0d@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
One additional BMG PCI ID has been added to the spec; make sure our
driver recognizes devices with this ID properly.
Bspec: 68090
Cc: stable@vger.kernel.org # v6.12+
Reviewed-by: Clint Taylor <Clinton.A.Taylor@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://lore.kernel.org/r/20250325224709.4073080-2-matthew.d.roper@intel.com
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
(cherry picked from commit cca9734ebe)
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
It is common for the DisplayPort bridges to implement audio support. In
preparation to providing a generic framework for DP audio, add
corresponding interface to struct drm_bridge. As suggested by Maxime
for now this is mostly c&p of the corresponding HDMI audio API.
Reviewed-by: Maxime Ripard <mripard@kernel.org>
Link: https://lore.kernel.org/r/20250314-dp-hdmi-audio-v6-2-dbd228fa73d7@oss.qualcomm.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
As pointed out by Laurent, OP bits are supposed to describe operations.
Split DRM_BRIDGE_OP_HDMI_AUDIO from DRM_BRIDGE_OP_HDMI instead of
overloading DRM_BRIDGE_OP_HDMI.
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Maxime Ripard <mripard@kernel.org>
Link: https://lore.kernel.org/r/20250314-dp-hdmi-audio-v6-1-dbd228fa73d7@oss.qualcomm.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Backmerging to get v6.15-rc1 into drm-misc-next. Also fixes a
build issue when enabling CONFIG_DRM_SCHED_KUNIT_TEST.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
DRM bridges are currently considered as a fixed element of a DRM card, and
thus their lifetime is assumed to extend for as long as the card
exists. New use cases, such as hot-pluggable hardware with video bridges,
require DRM bridges to be added to and removed from a DRM card without
tearing the card down. This is possible for connectors already (used by DP
MST), it is now needed for DRM bridges as well.
As a first preliminary step, make bridges reference-counted to allow a
struct drm_bridge (along with the private driver structure embedding it) to
stay allocated even after the driver has been removed, until the last
reference is put.
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Reviewed-by: Maxime Ripard <mripard@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20250326-drm-bridge-refcount-v9-2-5e0661fe1f84@bootlin.com
Signed-off-by: Louis Chauvet <louis.chauvet@bootlin.com>
Add a macro to allocate and initialize a DRM bridge embedded within a
private driver struct.
Compared to current practice, which is based on [devm_]kzalloc() allocation
followed by open-coded initialization of fields, this allows to have a
common and explicit API to allocate and initialize DRM bridges.
Besides being useful to consolidate bridge driver code, this is a
fundamental step in preparation for adding dynamic lifetime to bridges
based on refcount.
Reviewed-by: Maxime Ripard <mripard@kernel.org>
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250326-drm-bridge-refcount-v9-1-5e0661fe1f84@bootlin.com
Signed-off-by: Louis Chauvet <louis.chauvet@bootlin.com>
Add palette support and export GAMMA properties via sysfs. User-space
compositors can use this interface for programming gamma ramps or night
mode.
Vesadrm supports palette updates via VGA DAC registers or VESA palette
calls. Up to 256 palette entries are available. Userspace always supplies
gamma ramps of 256 entries. If the native color format does not match
this because pixel component have less then 8 bits, vesadrm interpolates
among the palette entries.
The code uses CamelCase style in a few places to match the VESA manuals.
v3:
- fix coding style
v2:
- use CONFIG_X86_32 instead of __i386__ (checkpatch)
- protect struct vesadrm.pmi with CONFIG_X86_32
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://lore.kernel.org/r/20250401094056.32904-19-tzimmermann@suse.de
Add support for screen_info setups with VIDEO_TYPE_EFI. Provide the
minimum functionality of reading modes, updating and clearing the display.
There is existing support for these displays provided by simpledrm with
CONFIG_SYSFB_SIMPLEFB=y. Using efidrm over simpledrm will allows for the
mapping of video memory with correct caching. Simpledrm always assumes WC
caching, while fully cached memory is possible with efidrm. Efidrm will
also allow for the use of additional functionality provided by EFI, such
as EDID information.
In addition to efidrm, add struct pixel_format plus initializer macros.
The type and macros describe pixel formats in a generic way on order to
find the DRM format from the screen_info settings. Similar existing code
in SIMPLEFB_FORMATS and fbdev is not really what is needed in efidrm,
but SIMPLEFB_FORMATS can later be converted to struct pixel_format.
v4:
- depend on CONFIG_EFI
- disallow module for now as efi_mem_desc_lookup() is not exported
v3:
- depend on !SYSFB_SIMPLEFB (Javier)
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://lore.kernel.org/r/20250401094056.32904-15-tzimmermann@suse.de
Move the calculation of the bits per pixels for screen_info into a
helper function. This will make it available to other callers besides
the firmware code.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://lore.kernel.org/r/20250401094056.32904-14-tzimmermann@suse.de
__VA_OPT__ is a macro that is useful when some arguments can be present
or not to entirely skip some part of a definition. Unfortunately, it
is a too recent addition that some of the still supported old GCC
versions do not know about, and is anyway not part of C11 that is the
version used in the kernel.
Find a trick to remove this macro, typically '__VA_ARGS__ + 0' is a
workaround used in netlink.h which works very well here, as we either
expect:
- 0
- A positive value
- No value, which means the field should be 0.
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202503181330.YcDXGy7F-lkp@intel.com/
Fixes: 7ce0d16d58 ("mtd: spinand: Add an optional frequency to read from cache macros")
Cc: stable@vger.kernel.org
Tested-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Normally scratch page is not allowed when a vm is operate under page
fault mode, i.e., in the existing codes, DRM_XE_VM_CREATE_FLAG_SCRATCH_PAGE
and DRM_XE_VM_CREATE_FLAG_FAULT_MODE are mutual exclusive. The reason
is fault mode relies on recoverable page to work, while scratch page
can mute recoverable page fault.
On xe2 and xe3, out of bound prefetch can cause page fault and further
system hang because xekmd can't resolve such page fault. SYCL and OCL
language runtime requires out of bound prefetch to be silently dropped
without causing any functional problem, thus the existing behavior
doesn't meet language runtime requirement.
At the same time, HW prefetching can cause page fault interrupt. Due to
page fault interrupt overhead (i.e., need Guc and KMD involved to fix
the page fault), HW prefetching can be slowed by many orders of magnitude.
Fix those problems by allowing scratch page under fault mode for xe2 and
xe3. With scratch page in place, HW prefetching could always hit scratch
page instead of causing interrupt.
A side effect is, scratch page could hide application program error.
Application out of bound accesses are hided by scratch page mapping,
instead of get reported to user.
v2: Refine commit message (Thomas)
v3: Move the scratch page flag check to after scratch page wa (Thomas)
v4: drop NEEDS_SCRATCH macro (matt)
Add a comment to DRM_XE_VM_CREATE_FLAG_SCRATCH_PAGE
Signed-off-by: Oak Zeng <oak.zeng@intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com>
Link: https://lore.kernel.org/r/20250403165328.2438690-4-oak.zeng@intel.com
Signed-off-by: Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com>
1) Convert all del_timer[_sync]() instances over to the new
timer_delete[_sync]() API and remove the legacy wrappers.
Conversion was done with coccinelle plus some manual fixups as
coccinelle chokes on scoped_guard().
2) The final cleanup of the hrtimer_init() to hrtimer_setup() conversion.
This has been delayed to the end of the merge window, so that all
patches which have been merged through other trees are in mainline and
all new users are catched.
Doing this right before rc1 ensures that new code which is merged post rc1
is not introducing new instances of the original functionality.
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Merge tag 'timers-cleanups-2025-04-06' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer cleanups from Thomas Gleixner:
"A set of final cleanups for the timer subsystem:
- Convert all del_timer[_sync]() instances over to the new
timer_delete[_sync]() API and remove the legacy wrappers.
Conversion was done with coccinelle plus some manual fixups as
coccinelle chokes on scoped_guard().
- The final cleanup of the hrtimer_init() to hrtimer_setup()
conversion.
This has been delayed to the end of the merge window, so that all
patches which have been merged through other trees are in mainline
and all new users are catched.
Doing this right before rc1 ensures that new code which is merged post
rc1 is not introducing new instances of the original functionality"
* tag 'timers-cleanups-2025-04-06' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
tracing/timers: Rename the hrtimer_init event to hrtimer_setup
hrtimers: Rename debug_init_on_stack() to debug_setup_on_stack()
hrtimers: Rename debug_init() to debug_setup()
hrtimers: Rename __hrtimer_init_sleeper() to __hrtimer_setup_sleeper()
hrtimers: Remove unnecessary NULL check in hrtimer_start_range_ns()
hrtimers: Make callback function pointer private
hrtimers: Merge __hrtimer_init() into __hrtimer_setup()
hrtimers: Switch to use __htimer_setup()
hrtimers: Delete hrtimer_init()
treewide: Convert new and leftover hrtimer_init() users
treewide: Switch/rename to timer_delete[_sync]()
1) A treewide cleanup for the irq_domain code, which makes the naming
consistent and gets rid of the original oddity of naming domains
'host'.
This is a trivial mechanical change and is done late to ensure that
all instances have been catched and new code merged post rc1 wont
reintroduce new instances.
2) A trivial consistency fix in the migration code
The recent introduction of irq_force_complete_move() in the core
code, causes a problem for the nostalgia crowd who maintains ia64 out
of tree.
The code assumes that hierarchical interrupt domains are enabled and
dereferences irq_data::parent_data unconditionally. That works in mainline
because both architectures which enable that code have hierarchical domains
enabled. Though it breaks the ia64 build, which enables the functionality,
but does not have hierarchical domains.
While it's not really a problem for mainline today, this
unconditional dereference is inconsistent and trivially fixable by
using the existing helper function irqd_get_parent_data(), which has
the appropriate #ifdeffery in place.
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Merge tag 'irq-urgent-2025-04-06' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull more irq updates from Thomas Gleixner:
"A set of updates for the interrupt subsystem:
- A treewide cleanup for the irq_domain code, which makes the naming
consistent and gets rid of the original oddity of naming domains
'host'.
This is a trivial mechanical change and is done late to ensure that
all instances have been catched and new code merged post rc1 wont
reintroduce new instances.
- A trivial consistency fix in the migration code
The recent introduction of irq_force_complete_move() in the core
code, causes a problem for the nostalgia crowd who maintains ia64
out of tree.
The code assumes that hierarchical interrupt domains are enabled
and dereferences irq_data::parent_data unconditionally. That works
in mainline because both architectures which enable that code have
hierarchical domains enabled. Though it breaks the ia64 build,
which enables the functionality, but does not have hierarchical
domains.
While it's not really a problem for mainline today, this
unconditional dereference is inconsistent and trivially fixable by
using the existing helper function irqd_get_parent_data(), which
has the appropriate #ifdeffery in place"
* tag 'irq-urgent-2025-04-06' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
genirq/migration: Use irqd_get_parent_data() in irq_force_complete_move()
irqdomain: Stop using 'host' for domain
irqdomain: Rename irq_get_default_host() to irq_get_default_domain()
irqdomain: Rename irq_set_default_host() to irq_set_default_domain()
The function hrtimer_init() doesn't exist anymore. It was replaced by
hrtimer_setup().
Thus, rename the hrtimer_init trace event to hrtimer_setup to keep it
consistent.
Signed-off-by: Nam Cao <namcao@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/all/cba84c3d853c5258aa3a262363a6eac08e2c7afc.1738746927.git.namcao@linutronix.de
Make the struct hrtimer::function field private, to prevent users from
changing this field in an unsafe way. hrtimer_update_function() should be
used if the callback function needs to be changed.
Signed-off-by: Nam Cao <namcao@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/all/7d0e6e0c5c59a64a9bea940051aac05d750bc0c2.1738746927.git.namcao@linutronix.de
