[PATCH 3/3] amdgpu/dm: don't use after free.

Dave Airlie airlied at gmail.com
Tue Oct 3 04:27:15 UTC 2017


From: Dave Airlie <airlied at redhat.com>

This dereference acrtc after freeing it.

Found by the kfree cocci script.

Signed-off-by: Dave Airlie <airlied at redhat.com>
---
 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index 61ccddd..4f89731 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -3174,7 +3174,6 @@ int amdgpu_dm_crtc_init(struct amdgpu_display_manager *dm,
 fail:
 	kfree(acrtc);
 	kfree(cursor_plane);
-	acrtc->crtc_id = -1;
 	return res;
 }
 
-- 
2.9.5



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