[PATCH 5/5] xaa: avoid possible freed pointer reuse in epilogue

[Dave Airlie]

From: Dave Airlie <airlied at redhat.com>

If the pGCPriv->flags == 2, then we try to assign the freed pGCPriv->XAAOps
avoid this by clearing the flags in to be destroyed pGCPriv.

Reported by coverity.

Signed-off-by: Dave Airlie <airlied at redhat.com>
---
 hw/xfree86/xaa/xaaGC.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/hw/xfree86/xaa/xaaGC.c b/hw/xfree86/xaa/xaaGC.c
index 44d50e6..1bc35d9 100644
--- a/hw/xfree86/xaa/xaaGC.c
+++ b/hw/xfree86/xaa/xaaGC.c
@@ -239,6 +239,7 @@ XAADestroyGC(GCPtr pGC)
 	free(pGCPriv->XAAOps);
 
     free(pGCPriv->DashPattern);
+    pGCPriv->flags = 0;
 
     (*pGC->funcs->DestroyGC)(pGC);
     XAA_GC_FUNC_EPILOGUE (pGC);
-- 
1.7.6.4