drm/amdgpu: don't leak bo_va when gem_object_open fails

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drm_gem_handle_create_tail() skips the close() callback when open()
returns an error, so a bo_va added before a failing step is never
removed. It stays linked on bo->vm_bo and a later eviction of that BO
dereferences the VM after it has been torn down.

Validate and fence the BO before adding the bo_va, drop the bo_va when
attaching the eviction fence fails, and propagate the allocation failure
from amdgpu_vm_bo_add().

Signed-off-by: Xiang Liu <xiang.liu@amd.com>
Signed-off-by: Mukul Joshi <mukul.joshi@amd.com>
Reviewed-by: Felix Kuehling <felix.kuehling@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

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Xiang Liu 2026-09-23 19:06:05 +08:00 • committed by Alex Deucher

parent 78cdd96ab4

commit a113d4d659

1 changed files with 45 additions and 35 deletions

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

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