[PATCH AUTOSEL 6.6 12/19] drm/amdgpu/mes: fix use-after-free issue

[Sasha Levin]

From: Jack Xiao <jack.x...@amd.com>

[ Upstream commit 948255282074d9367e01908b3f5dcf8c10fc9c3d ]

Delete fence fallback timer to fix the ramdom
use-after-free issue.

v2: move to amdgpu_mes.c

Signed-off-by: Jack Xiao <jack.x...@amd.com>
Acked-by: Lijo Lazar <lijo.la...@amd.com>
Acked-by: Christian König <christian.koe...@amd.com>
Signed-off-by: Alex Deucher <alexander.deuc...@amd.com>
Signed-off-by: Sasha Levin <sas...@kernel.org>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c 
b/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c
index 15c67fa404ff9..c5c55e132af21 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c
@@ -1098,6 +1098,7 @@ void amdgpu_mes_remove_ring(struct amdgpu_device *adev,
                return;
 
        amdgpu_mes_remove_hw_queue(adev, ring->hw_queue_id);
+       del_timer_sync(&ring->fence_drv.fallback_timer);
        amdgpu_ring_fini(ring);
        kfree(ring);
 }
-- 
2.43.0