Re: [PATCH] drm/amdgpu: fix a vm_flush fence leak

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Am 24.10.2016 um 04:32 schrieb zhoucm1:


On 2016年10月24日 02:31, Grazvydas Ignotas wrote:
Looks like .last_flush reference is left at teardown.
Leak reported by CONFIG_SLUB_DEBUG.

Fixes: 41d9eb2c5a2a ("drm/amdgpu: add a fence after the VM flush")
Signed-off-by: Grazvydas Ignotas <notasas@xxxxxxxxx>
Reviewed-by: Chunming Zhou <david1.zhou@xxxxxxx>

Reviewed-by: Christian König <christian.koenig@xxxxxxx>.

---
  drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 1 +
  1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
index ded57dd..d6c2839 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
@@ -1774,5 +1774,6 @@ void amdgpu_vm_manager_fini(struct amdgpu_device *adev)
          fence_put(adev->vm_manager.ids[i].first);
amdgpu_sync_free(&adev->vm_manager.ids[i].active);
          fence_put(id->flushed_updates);
+        fence_put(id->last_flush);
      }
  }

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