linux-kernel - [PATCH] drm/amdgpu: fix double reference dropping

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <1573033994-17102-1-git-send-email-bianpan2016@163.com>
Date:   Wed,  6 Nov 2019 17:53:14 +0800
From:   Pan Bian <bianpan2016@....com>
To:     Alex Deucher <alexander.deucher@....com>, christian.koenig@....com,
        David1.Zhou@....com, David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Sam Ravnborg <sam@...nborg.org>
Cc:     amd-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org, Pan Bian <bianpan2016@....com>
Subject: [PATCH] drm/amdgpu: fix double reference dropping

After dropping the reference of object fence in the loop, it should be
set to NULL to protecting dropping its reference again outside the loop.

Signed-off-by: Pan Bian <bianpan2016@....com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_benchmark.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_benchmark.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_benchmark.c
index 649e68c4479b..3174093f35f3 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_benchmark.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_benchmark.c
@@ -47,6 +47,7 @@ static int amdgpu_benchmark_do_move(struct amdgpu_device *adev, unsigned size,
 		if (r)
 			goto exit_do_move;
 		dma_fence_put(fence);
+		fence = NULL;
 	}
 	end_jiffies = jiffies;
 	r = jiffies_to_msecs(end_jiffies - start_jiffies);
-- 
2.7.4