Xiyu Yang dbe5fef1c2 drm/ttm: Fix dma_fence refcnt leak when adding move fence ... [ Upstream commit 11425c4519 ] ttm_bo_add_move_fence() invokes dma_fence_get(), which returns a reference of the specified dma_fence object to "fence" with increased refcnt. When ttm_bo_add_move_fence() returns, local variable "fence" becomes invalid, so the refcount should be decreased to keep refcount balanced. The reference counting issue happens in one exception handling path of ttm_bo_add_move_fence(). When no_wait_gpu flag is equals to true, the function forgets to decrease the refcnt increased by dma_fence_get(), causing a refcnt leak. Fix this issue by calling dma_fence_put() when no_wait_gpu flag is equals to true. Signed-off-by: Xiyu Yang <xiyuyang19@fudan.edu.cn> Signed-off-by: Xin Tan <tanxin.ctf@gmail.com> Reviewed-by: Christian König <christian.koenig@amd.com> Link: https://patchwork.freedesktop.org/patch/370221/ Signed-off-by: Christian König <christian.koenig@amd.com> Signed-off-by: Sasha Levin <sashal@kernel.org>		2020-07-16 08:16:33 +02:00
..
Makefile
ttm_agp_backend.c
ttm_bo_manager.c
ttm_bo_util.c	dma-buf: rename reservation_object to dma_resv	2019-08-13 09:09:30 +02:00
ttm_bo_vm.c	drm/ttm: Restore ttm prefaulting	2019-10-14 12:49:24 +02:00
ttm_bo.c	drm/ttm: Fix dma_fence refcnt leak when adding move fence	2020-07-16 08:16:33 +02:00
ttm_execbuf_util.c	dma-buf: rename reservation_object to dma_resv	2019-08-13 09:09:30 +02:00
ttm_memory.c
ttm_module.c
ttm_page_alloc_dma.c
ttm_page_alloc.c
ttm_tt.c	dma-buf: rename reservation_object to dma_resv	2019-08-13 09:09:30 +02:00