Hyejeong Choi c9d2b9a80d dma-buf: insert memory barrier before updating num_fences ...

commit 72c7d62583 upstream.

smp_store_mb() inserts memory barrier after storing operation.
It is different with what the comment is originally aiming so Null
pointer dereference can be happened if memory update is reordered.

Signed-off-by: Hyejeong Choi <hjeong.choi@samsung.com>
Fixes: a590d0fdba ("dma-buf: Update reservation shared_count after adding the new fence")
CC: stable@vger.kernel.org
Reviewed-by: Christian König <christian.koenig@amd.com>
Link: https://lore.kernel.org/r/20250513020638.GA2329653@au1-maretx-p37.eng.sarc.samsung.com
Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2025-05-22 14:12:20 +02:00

..

heaps

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dma-buf-sysfs-stats.c

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dma-buf-sysfs-stats.h

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dma-buf.c

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dma-fence-array.c

dma-buf: fix dma_fence_array_signaled v4

2024-12-14 19:59:56 +01:00

dma-fence-chain.c

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dma-fence-unwrap.c

dma-fence: Use kernel's sort for merging fences

2024-12-14 19:59:56 +01:00

dma-fence.c

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dma-heap.c

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dma-resv.c

dma-buf: insert memory barrier before updating num_fences

2025-05-22 14:12:20 +02:00

Kconfig

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Makefile

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selftest.c

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selftest.h

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selftests.h

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st-dma-fence-chain.c

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st-dma-fence-unwrap.c

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st-dma-fence.c

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st-dma-resv.c

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sw_sync.c

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sync_debug.c

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sync_debug.h

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sync_file.c

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sync_trace.h

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udmabuf.c

udmabuf: fix a buf size overflow issue during udmabuf creation

2025-05-02 07:50:57 +02:00