drm/amdgpu/userq: make sure queue is valid in the hang_detect_work

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Thread 1: Running amdgpu_userq_destroy which eventually remove
the queue from door bell and set userq_mgr = NULL.

Thread2: An interrupt might have scheduled the hang_detect_work
which still need userq_mgr to be valid but could get an NULL
ptrs.

To fix that make sure we cancel the hang_detect_work again before
setting userq_mgr to NULL.

Along with that we also need all the queue va to remain valid till
we could be running anything on the queue and hence moving the
userq_va post hang_detect handler is cancelled.

Signed-off-by: Sunil Khatri <sunil.khatri@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 1a66ceb98b)

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This commit is contained in:

Sunil Khatri 2026-05-18 19:58:08 +05:30 • committed by Alex Deucher

parent a00caed230

commit cf4aafdcce

1 changed files with 7 additions and 7 deletions

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drivers/gpu/drm/amd/amdgpu/amdgpu_userq.c

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