From: Gerd Hoffmann <kraxel@redhat.com>
Date: Mon, 7 Apr 2014 10:15:44 +0000 (+0200)
Subject: spice: monitors_config: check pointer before dereferencing
X-Git-Tag: qemu-xen-4.5.0-rc1~47^2
X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=dc491cfc14074064ed54a872b62cce6ca1330644;p=qemu-upstream-4.5-testing.git

spice: monitors_config: check pointer before dereferencing

Reported-by: Fabio Fantoni <fabio.fantoni@m2r.biz>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---

diff --git a/ui/spice-display.c b/ui/spice-display.c
index e28698c6b..ce6b220f5 100644
--- a/ui/spice-display.c
+++ b/ui/spice-display.c
@@ -549,6 +549,10 @@ static int interface_client_monitors_config(QXLInstance *sin,
     QemuUIInfo info;
     int rc;
 
+    if (!mc) {
+        return 1;
+    }
+
     /*
      * FIXME: multihead is tricky due to the way
      * spice has multihead implemented.