[PATCH 6/7] drm/amdgpu: Use vm status_lock to protect pt free

[Philip Yang]

Signed-off-by: Philip Yang <philip.y...@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_vm_pt.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm_pt.c 
b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm_pt.c
index 88de9f0d4728..61a4b7182d44 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm_pt.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm_pt.c
@@ -637,7 +637,10 @@ static void amdgpu_vm_pt_free(struct amdgpu_vm_bo_base 
*entry)
        }
        ttm_bo_set_bulk_move(&entry->bo->tbo, NULL);
        entry->bo->vm_bo = NULL;
+
+       spin_lock(&entry->vm->status_lock);
        list_del(&entry->vm_status);
+       spin_unlock(&entry->vm->status_lock);
        amdgpu_bo_unref(&entry->bo);
 }
 
-- 
2.35.1