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dma-buf: Fix one use-after-free of fence
author
xinhui pan
<xinhui.pan@amd.com>
Thu, 7 Jul 2022 08:02:41 +0000
(16:02 +0800)
committer
Christian König
<christian.koenig@amd.com>
Thu, 7 Jul 2022 08:24:59 +0000
(10:24 +0200)
Need get the new fence when we replace the old one.
Fixes:
047a1b877ed48
("dma-buf & drm/amdgpu: remove dma_resv workaround")
Signed-off-by: xinhui pan <xinhui.pan@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Link:
https://patchwork.freedesktop.org/patch/msgid/20220707080241.20060-1-xinhui.pan@amd.com
Signed-off-by: Christian König <christian.koenig@amd.com>
drivers/dma-buf/dma-resv.c
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diff --git
a/drivers/dma-buf/dma-resv.c
b/drivers/dma-buf/dma-resv.c
index
0cce6e4
..
205acb2
100644
(file)
--- a/
drivers/dma-buf/dma-resv.c
+++ b/
drivers/dma-buf/dma-resv.c
@@
-343,7
+343,7
@@
void dma_resv_replace_fences(struct dma_resv *obj, uint64_t context,
if (old->context != context)
continue;
- dma_resv_list_set(list, i,
replacement
, usage);
+ dma_resv_list_set(list, i,
dma_fence_get(replacement)
, usage);
dma_fence_put(old);
}
}