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drm/amdgpu: fix task hang from failed job submission during process kill

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During process kill, drm_sched_entity_flush() will kill the vm
entities. The following job submissions of this process will fail, and
the resources of these jobs have not been released, nor have the fences
been signalled, causing tasks to hang and timeout.

Fix by check entity status in amdgpu_vm_ready() and avoid submit jobs to
stopped entity.

v2: add amdgpu_vm_ready() check before amdgpu_vm_clear_freed() in
function amdgpu_cs_vm_handling().

Signed-off-by: Liu01 Tong <Tong.Liu01@amd.com>
Signed-off-by: Lin.Cao <lincao12@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Liu01 Tong
2025-08-11 14:52:37 +08:00
committed by Alex Deucher
parent b08425fa77
commit f101c13a87
2 changed files with 14 additions and 4 deletions
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3
drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
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@@ -1139,6 +1139,9 @@ static int amdgpu_cs_vm_handling(struct amdgpu_cs_parser *p)
}
}
if (!amdgpu_vm_ready(vm))
return -EINVAL;
r = amdgpu_vm_clear_freed(adev, vm, NULL);
if (r)
return r;