From: Ben Pfaff <blp@nicira.com>
Date: Tue, 6 Apr 2010 19:46:12 +0000 (-0700)
Subject: in-band: Fix null pointer dereference.
X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a35801789a04c3c2abfdccb8afe9b21289bf190a;p=openvswitch

in-band: Fix null pointer dereference.

Triggering this would require deleting the in-use datapath at just the
right time, but we still don't want it to happen.
---

diff --git a/ofproto/in-band.c b/ofproto/in-band.c
index 94024bce..adf89d12 100644
--- a/ofproto/in-band.c
+++ b/ofproto/in-band.c
@@ -410,7 +410,7 @@ in_band_msg_in_hook(struct in_band *in_band, const flow_t *flow,
         }
 
         local_mac = get_local_mac(in_band);
-        if (eth_addr_equals(dhcp->chaddr, local_mac)) {
+        if (local_mac && eth_addr_equals(dhcp->chaddr, local_mac)) {
             return true;
         }
     }