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

[Philip Yang]

Signed-off-by: Philip Yang <Philip.Yang at 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