bridge: Don't update CFM on synthetic interfaces.

Synthetic interfaces don't have database records so it doesn't make
sense to update them.  In some situations this could cause a
segmentation fault.

Reported-by: Paul Ingram <paul@nicira.com>
Bug #7278.

diff --git a/vswitchd/bridge.c b/vswitchd/bridge.c
index f1c306d48dcc365f04b6d0a57535b1e30899cac7..d93d5c5b53a7eea41955c8174a2c0fa0de7b7540 100644 (file)
--- a/vswitchd/bridge.c
+++ b/vswitchd/bridge.c
@@ -1267,6 +1267,10 @@ iface_refresh_cfm_stats(struct iface *iface)
     const uint64_t *rmps;
     size_t n_rmps;
 
+    if (iface_is_synthetic(iface)) {
+        return;
+    }
+
     fault = ofproto_port_get_cfm_fault(iface->port->bridge->ofproto,
                                        iface->ofp_port);
     if (fault >= 0) {