drm/xe: Protect against unset LRC when pausing submissions

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While pausing submissions, it is possible to encouner an exec queue
which is during creation, and therefore doesn't have a valid xe_lrc
struct reference.

Protect agains such situation, by checking for NULL before access.

Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Fixes: c25c1010df ("drm/xe/vf: Replay GuC submission state on pause / unpause")
Signed-off-by: Tomasz Lis <tomasz.lis@intel.com>
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Link: https://patch.msgid.link/20251124222853.1900800-1-tomasz.lis@intel.com
(cherry picked from commit 07cf4b864f)
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>

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Tomasz Lis 2025-11-24 23:28:53 +01:00 • committed by Thomas Hellström

parent 3d98a7164d

commit d72312d730

1 changed files with 16 additions and 6 deletions

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drivers/gpu/drm/xe/xe_guc_submit.c

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