Hello OVS colleagues, vswitchd appears to crash handling a port add/mod. Please see following to reproduce.
Run two Ryu OF controllers: $ ryu-manager --ofp-tcp-listen-port 6653 --ofp-listen-host 127.0.0.1 --verbose --app-lists ryu.app.simple_switch_stp $ ryu-manager --ofp-tcp-listen-port 6654 --ofp-listen-host 127.0.0.1 --verbose --app-lists ryu.app.simple_switch_stp Now set up a bridge with no interfaces: root@faucet:~/faucet# /usr/local/share/openvswitch/scripts/ovs-ctl start * Starting ovsdb-server * system ID not configured, please use --system-id * Configuring Open vSwitch system IDs * Starting ovs-vswitchd * Enabling remote OVSDB managers root@faucet:~/faucet# ovs-vsctl --version ovs-vsctl (Open vSwitch) 2.9.3 DB Schema 7.15.1 root@faucet:~/faucet# ovs-vsctl add-br br0 root@faucet:~/faucet# ovs-vsctl set-controller br0 tcp:127.0.0.1:6653 tcp: 127.0.0.1:6654 Now add a physical interface known to be up: root@faucet:~/faucet# ovs-vsctl add-port br0 enp2s0f0 Observe crash in log: 2018-12-04T23:03:06.663Z|00036|bridge|INFO|bridge br0: added interface enp2s0f0 on port 1 2018-12-04T23:03:06.663Z|00037|bridge|INFO|bridge br0: using datapath ID 000090e2ba7e7558 2018-12-04T23:03:06.663Z|00038|rconn|INFO|br0<->tcp:127.0.0.1:6653: disconnecting 2018-12-04T23:03:06.663Z|00039|rconn|INFO|br0<->tcp:127.0.0.1:6654: disconnecting 2018-12-04T23:03:06.664Z|00040|fail_open|WARN|Could not connect to controller (or switch failed controller's post-connection admission control policy) for 19 seconds, failing open 2018-12-04T23:03:06.710Z|00002|daemon_unix(monitor)|ERR|1 crashes: pid 5620 died, killed (Aborted), core dumped, restarting
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