From: Ben Pfaff <blp@nicira.com>
Date: Fri, 13 May 2011 23:50:20 +0000 (-0700)
Subject: ofproto-dpif: Fix null pointer dereference in get_ofp_port().
X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7df6a8bdb4abe4ac41c6d1a9043b69cbaea23bcc;p=openvswitch

ofproto-dpif: Fix null pointer dereference in get_ofp_port().
---

diff --git a/ofproto/ofproto-dpif.c b/ofproto/ofproto-dpif.c
index 93acd429..b7194930 100644
--- a/ofproto/ofproto-dpif.c
+++ b/ofproto/ofproto-dpif.c
@@ -1353,7 +1353,8 @@ is_mirror_output_bundle(struct ofproto *ofproto_, void *aux)
 static struct ofport_dpif *
 get_ofp_port(struct ofproto_dpif *ofproto, uint16_t ofp_port)
 {
-    return ofport_dpif_cast(ofproto_get_port(&ofproto->up, ofp_port));
+    struct ofport *ofport = ofproto_get_port(&ofproto->up, ofp_port);
+    return ofport ? ofport_dpif_cast(ofport) : NULL;
 }
 
 static struct ofport_dpif *