From: Lin Yi teroincn@163.com

[ Upstream commit 543c364d8eeeb42c0edfaac9764f4e9f3d777ec1 ]

the ttm_bo_add_move_fence takes a reference to the struct dma_fence, but failed to release it on the error path, leading to a memory leak. add dma_fence_put before return when error occur.

Signed-off-by: Lin Yi teroincn@163.com Reviewed-by: Christian König christian.koenig@amd.com Signed-off-by: Alex Deucher alexander.deucher@amd.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpu/drm/ttm/ttm_bo.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c index 996cadd83f24..d8e1b3f12904 100644 --- a/drivers/gpu/drm/ttm/ttm_bo.c +++ b/drivers/gpu/drm/ttm/ttm_bo.c @@ -881,8 +881,10 @@ static int ttm_bo_add_move_fence(struct ttm_buffer_object *bo, reservation_object_add_shared_fence(bo->resv, fence);

ret = reservation_object_reserve_shared(bo->resv, 1); - if (unlikely(ret)) + if (unlikely(ret)) { + dma_fence_put(fence); return ret; + }

dma_fence_put(bo->moving); bo->moving = fence;