Rob Clark e171795856 dma-buf/sw_sync: Avoid recursive lock during fence signal ... [ Upstream commit e531fdb5cd ] If a signal callback releases the sw_sync fence, that will trigger a deadlock as the timeline_fence_release recurses onto the fence->lock (used both for signaling and the the timeline tree). To avoid that, temporarily hold an extra reference to the signalled fences until after we drop the lock. (This is an alternative implementation of https://patchwork.kernel.org/patch/11664717/ which avoids some potential UAF issues with the original patch.) v2: Remove now obsolete comment, use list_move_tail() and list_del_init() Reported-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl> Fixes: d3c6dd1fb3 ("dma-buf/sw_sync: Synchronize signal vs syncpt free") Signed-off-by: Rob Clark <robdclark@chromium.org> Link: https://patchwork.freedesktop.org/patch/msgid/20230818145939.39697-1-robdclark@gmail.com Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Christian König <christian.koenig@amd.com> Signed-off-by: Sasha Levin <sashal@kernel.org>		2023-08-30 16:27:28 +02:00
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Kconfig	…
Makefile	…
dma-buf.c	dma-buf: WARN on dmabuf release with pending attachments	2021-11-17 09:48:27 +01:00
dma-fence-array.c	dma_fence_array: Fix PENDING_ERROR leak in dma_fence_array_signaled()	2022-01-27 09:19:28 +01:00
dma-fence-chain.c	…
dma-fence.c	dma-fence: Serialise signal enabling (dma_fence_enable_sw_signaling)	2020-10-01 13:17:11 +02:00
dma-resv.c	dma-buf/dma-resv: Respect num_fences when initializing the shared fence list.	2020-12-30 11:51:46 +01:00
selftest.c	…
selftest.h	…
selftests.h	…
seqno-fence.c	…
st-dma-fence.c	…
sw_sync.c	dma-buf/sw_sync: Avoid recursive lock during fence signal	2023-08-30 16:27:28 +02:00
sync_debug.c	…
sync_debug.h	…
sync_file.c	dma-buf/sync_file: Don't leak fences on merge failure	2021-07-25 14:35:15 +02:00
sync_trace.h	…
udmabuf.c	udmabuf: Set the DMA mask for the udmabuf device (v2)	2022-09-05 10:27:45 +02:00