From 7c1aeba7bb977fe327fbc9682e9ccb36134cbf77 Mon Sep 17 00:00:00 2001 From: xinhui pan Date: Thu, 7 Jul 2022 16:02:41 +0800 Subject: dma-buf: Fix one use-after-free of fence MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 Reviewed-by: Christian König Link: https://patchwork.freedesktop.org/patch/msgid/20220707080241.20060-1-xinhui.pan@amd.com Signed-off-by: Christian König --- 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); } } -- cgit v1.2.3