On Tue, Nov 29, 2016 at 03:00:05PM +0100, Thomas Morin wrote: > We're hitting an issue with an assert failing in commit_set_ipv4_action(), > resulting in a core dump: > > 2016-11-29T09:22:48.829Z|00005|util(revalidator77)|EMER|lib/odp-util.c:5208: > assertion flow->nw_proto == base_flow->nw_proto && flow->nw_frag == > base_flow->nw_frag failed in commit_set_ipv4_action() > > Adding a few log statements gives more info: > > 2016-11-29T09:22:48.829Z|00001|odp_util(revalidator77)|WARN|commit_set_ipv4_action > assert will fail.... > 2016-11-29T09:22:48.829Z|00002|odp_util(revalidator77)|WARN| base_flow: > ip,in_port=3,dl_vlan=1,dl_vlan_pcp=0,dl_src=fa:16:3e:84:02:4a,dl_dst=00:00:5e:00:43:64,nw_src=0.0.0.0,nw_dst=0.0.0.0,nw_proto=0,nw_tos=0,nw_ecn=0,nw_ttl=0 > 2016-11-29T09:22:48.829Z|00003|odp_util(revalidator77)|WARN| flow: > tcp,in_port=3,dl_vlan=1,dl_vlan_pcp=0,dl_src=fa:16:3e:84:02:4a,dl_dst=00:00:5e:00:43:64,nw_src=10.0.1.21,nw_dst=10.0.0.3,nw_tos=0,nw_ecn=0,nw_ttl=64,tp_src=50962,tp_dst=8080,tcp_flags=psh|ack > 2016-11-29T09:22:48.829Z|00004|odp_util(revalidator77)|WARN| flow->nw_proto > (6) != base_flow->nw_proto (0) > > As show above the assert triggers because flow->nw_proto != > base_flow->nw_proto (6 != 0). > > The assert triggers, not on a new flow but for a flow for which traffic has > been flowing for some time (tcp 50962 to 8080 in the example above). > > The issue can be reproduced on a lab platform, happening each time > approximately 5 minutes after starting a test service (a few VMs).
An nw_proto change from 0 to 6 implies that something in action translation transforms a packet from IP-with-no-next-protocol to TCP. Nothing in action translation is supposed to be capable of that, hence the assertion and the crash. Do you have any idea what in your OpenFlow pipeline might do that, i.e. is there anything especially tricky in the OpenFlow flows? Are you willing to show us your OpenFlow flow table? _______________________________________________ dev mailing list d...@openvswitch.org https://mail.openvswitch.org/mailman/listinfo/ovs-dev
