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| author | Lucas De Marchi <lucas.demarchi@intel.com> | 2025-04-02 22:38:05 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-07-06 11:04:23 +0200 |
| commit | 20eec7018e132a023f84ccbdf56b6c5b73d3094f (patch) | |
| tree | ebb5722654f641e640156dc8bad0de46dd355971 /include/net/aligned_data.h | |
| parent | d1a206bb1ed5f288f08d6cac0689a7a23a599ea5 (diff) | |
drm/xe: Fix taking invalid lock on wedge
commit 1e1981b16bb1bbe2fafa57ed439b45cb5b34e32d upstream.
If device wedges on e.g. GuC upload, the submission is not yet enabled
and the state is not even initialized. Protect the wedge call so it does
nothing in this case. It fixes the following splat:
[] xe 0000:bf:00.0: [drm] device wedged, needs recovery
[] ------------[ cut here ]------------
[] DEBUG_LOCKS_WARN_ON(lock->magic != lock)
[] WARNING: CPU: 48 PID: 312 at kernel/locking/mutex.c:564 __mutex_lock+0x8a1/0xe60
...
[] RIP: 0010:__mutex_lock+0x8a1/0xe60
[] mutex_lock_nested+0x1b/0x30
[] xe_guc_submit_wedge+0x80/0x2b0 [xe]
Reviewed-by: Balasubramani Vivekanandan <balasubramani.vivekanandan@intel.com>
Link: https://lore.kernel.org/r/20250402-warn-after-wedge-v1-1-93e971511fa5@intel.com
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/net/aligned_data.h')
0 files changed, 0 insertions, 0 deletions