[PATCH] dma-buf: Fix one use-after-free of fence
xinhui pan
xinhui.pan at amd.com
Thu Jul 7 08:02:41 UTC 2022
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 at amd.com>
---
drivers/dma-buf/dma-resv.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/dma-buf/dma-resv.c b/drivers/dma-buf/dma-resv.c
index 0cce6e4ec946..205acb2c744d 100644
--- 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);
}
}
--
2.34.1
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