tested with following script: enable_coredump() { ulimit -c unlimited ulimit -s unlimited sysctl -w fs.suid_dumpable=2 if ! sysctl kernel.core_pattern | grep systemd-coredump then sysctl -w kernel.core_pattern="|/usr/lib/systemd/systemd-coredump %P %u %g %s %t %c %h %e" fi rm -rf /var/lib/systemd/coredump/* rm -rf /run/log/journal/* rm -rf /var/log/journal/* systemctl restart systemd-journald } systemctl start openvswitch systemctl start ovn-northd ovn-nbctl set-connection ptcp:6641 ovn-sbctl set-connection ptcp:6642 ovs-vsctl set open . external_ids:system-id=hv1 external_ids:ovn-remote=tcp:1.1.175.25:6642 external_ids:ovn-encap-type=geneve external_ids:ovn-encap-ip=1.1.175.25 systemctl restart ovn-controller ovs-vsctl \ -- add-port br-int vif1 \ -- set Interface vif1 type=internal external_ids:iface-id=sw0-port1 \ ofport-request=1 ovn-nbctl ls-add sw0 ovn-nbctl lsp-add sw0 sw0-port1 ovn-nbctl lsp-set-addresses sw0-port1 "10:14:00:00:00:01 192.168.0.2" ovn-nbctl lsp-add sw0 sw0-port2 ovn-nbctl lsp-add sw0 sw0-port3 ovn-nbctl lsp-add sw0 sw0-port4 ovn-nbctl lsp-add sw0 sw0-port5 ovn-nbctl lsp-add sw0 sw0-port6 ovn-nbctl lsp-add sw0 sw0-port7 ovn-nbctl create address_set name=as1 ovn-nbctl set address_set . addresses="10.0.0.10,10.0.0.11,10.0.0.12" ovn-nbctl pg-add pg1 sw0-port1 sw0-port2 sw0-port3 ovn-nbctl acl-add pg1 to-lport 1002 "outport == @pg1 && ip4.dst == \$as1 && icmp4" drop ovn-nbctl acl-add pg1 to-lport 1002 "outport == @pg1 && ip4.dst == \$as1 && tcp && tcp.dst >=10000 && tcp.dst <= 20000" drop ovn-nbctl acl-add pg1 to-lport 1002 "outport == @pg1 && ip4.dst == \$as1 && udp && udp.dst >=10000 && udp.dst <= 20000" drop ovn-nbctl pg-add pg2 sw0-port2 sw0-port3 sw0-port4 sw0-port5 ovn-nbctl acl-add pg2 to-lport 1002 "outport == @pg2 && ip4.dst == \$as1 && icmp4" allow-related ovn-nbctl acl-add pg2 to-lport 1002 "outport == @pg2 && ip4.dst == \$as1 && tcp && tcp.dst >=30000 && tcp.dst <= 40000" drop ovn-nbctl acl-add pg2 to-lport 1002 "outport == @pg2 && ip4.dst == \$as1 && udp && udp.dst >=30000 && udp.dst <= 40000" drop ovn-nbctl pg-add pg3 sw0-port1 sw0-port5 ovn-nbctl acl-add pg3 to-lport 1002 "outport == @pg3 && ip4.dst == \$as1 && icmp4" allow-related ovn-nbctl acl-add pg3 to-lport 1002 "outport == @pg3 && ip4.dst == \$as1 && tcp && tcp.dst >=20000 && tcp.dst <= 30000" allow-related ovn-nbctl acl-add pg3 to-lport 1002 "outport == @pg3 && ip4.dst == \$as1 && udp && udp.dst >=20000 && udp.dst <= 30000" allow-related for i in $(seq 1 10) do ovn-nbctl --wait=hv clear port_Group pg1 ports ovn-nbctl --wait=hv clear port_Group pg2 ports ovn-nbctl --wait=hv clear port_Group pg3 ports ovn-nbctl --wait=hv pg-set-ports pg1 sw0-port1 ovn-nbctl --wait=hv pg-set-ports pg1 sw0-port1 sw0-port4 ovn-nbctl --wait=hv pg-set-ports pg1 sw0-port1 sw0-port4 sw0-port5 ovn-nbctl --wait=hv pg-set-ports pg2 sw0-port2 ovn-nbctl --wait=hv pg-set-ports pg2 sw0-port2 sw0-port6 ovn-nbctl --wait=hv pg-set-ports pg2 sw0-port2 sw0-port6 sw0-port7 ovn-nbctl --wait=hv pg-set-ports pg3 sw0-port1 ovn-nbctl --wait=hv pg-set-ports pg3 sw0-port1 sw0-port3 ovn-nbctl --wait=hv pg-set-ports pg3 sw0-port1 sw0-port3 sw0-port6 if coredumpctl then break fi done echo $i reproduced on 20.12.0-17: [root@wsfd-advnetlab21 bz1928012]# rpm -qa | grep -E "openvswitch2.13|ovn2.13" openvswitch2.13-2.13.0-82.el7fdp.x86_64 ovn2.13-central-20.12.0-17.el7fdp.x86_64 ovn2.13-20.12.0-17.el7fdp.x86_64 ovn2.13-host-20.12.0-17.el7fdp.x86_64 + ovn-nbctl --wait=hv pg-set-ports pg3 sw0-port1 sw0-port3 sw0-port6 + coredumpctl TIME PID UID GID SIG PRESENT EXE Fri 2021-02-19 00:58:40 EST 85436 996 993 6 * /usr/bin/ovn-controller + break + echo 5 5 [root@wsfd-advnetlab21 bz1928012]# coredumpctl info PID: 85436 (ovn-controller) UID: 996 (openvswitch) GID: 993 (openvswitch) Signal: 6 (ABRT) Timestamp: Fri 2021-02-19 00:58:38 EST (18s ago) Command Line: ovn-controller unix:/run/openvswitch/db.sock -vconsole:emer -vsyslog:err -vfile:info --user openvswitch:openvswitch --no-chdir --log-file=/var/log/ovn/ovn-controller.log --pidfile=/run/ovn Executable: /usr/bin/ovn-controller Control Group: /system.slice/ovn-controller.service Unit: ovn-controller.service Slice: system.slice Boot ID: bf0f58dfcf874536b854bcd802a113c0 Machine ID: dd49cd68bab449beb64d72335f2acfc2 Hostname: wsfd-advnetlab21.anl.lab.eng.bos.redhat.com Coredump: /var/lib/systemd/coredump/core.ovn-controller.996.bf0f58dfcf874536b854bcd802a113c0.85436.1613714318000000.xz Message: Process 85436 (ovn-controller) of user 996 dumped core. Stack trace of thread 85436: #0 0x00007fdde98e4387 raise (libc.so.6) #1 0x00007fdde98e5a78 abort (libc.so.6) #2 0x0000555eec7143ae ovs_abort_valist (ovn-controller) #3 0x0000555eec71bb70 vlog_abort_valist (ovn-controller) #4 0x0000555eec71bc04 vlog_abort (ovn-controller) #5 0x0000555eec7140ec ovs_assert_failure (ovn-controller) #6 0x0000555eec642d32 flood_remove_flows_for_sb_uuid (ovn-controller) #7 0x0000555eec642c0b flood_remove_flows_for_sb_uuid (ovn-controller) #8 0x0000555eec642dd2 ofctrl_flood_remove_flows (ovn-controller) #9 0x0000555eec63d07f lflow_handle_changed_flows (ovn-controller) #10 0x0000555eec65981d flow_output_sb_logical_flow_handler (ovn-controller) #11 0x0000555eec6731c0 engine_run (ovn-controller) #12 0x0000555eec630290 main (ovn-controller) #13 0x00007fdde98d0555 __libc_start_main (libc.so.6) #14 0x0000555eec631b75 _start (ovn-controller) Stack trace of thread 85439: #0 0x00007fdde99a1c3d poll (libc.so.6) #1 0x0000555eec70f624 time_poll (ovn-controller) #2 0x0000555eec704e9c poll_block (ovn-controller) #3 0x0000555eec70426c stopwatch_thread (ovn-controller) #4 0x0000555eec6ee45f ovsthread_wrapper (ovn-controller) #5 0x00007fddea48eea5 start_thread (libpthread.so.0) #6 0x00007fdde99ac96d __clone (libc.so.6) Stack trace of thread 85437: #0 0x00007fdde99a1c3d poll (libc.so.6) #1 0x0000555eec70f624 time_poll (ovn-controller) #2 0x0000555eec704e9c poll_block (ovn-controller) #3 0x0000555eec6502e3 pinctrl_handler (ovn-controller) #4 0x0000555eec6ee45f ovsthread_wrapper (ovn-controller) #5 0x00007fddea48eea5 start_thread (libpthread.so.0) #6 0x00007fdde99ac96d __clone (libc.so.6) Stack trace of thread 85438: #0 0x00007fdde99a1c3d poll (libc.so.6) #1 0x0000555eec70f624 time_poll (ovn-controller) #2 0x0000555eec704e9c poll_block (ovn-controller) #3 0x0000555eec6ec09e ovsrcu_postpone_thread (ovn-controller) #4 0x0000555eec6ee45f ovsthread_wrapper (ovn-controller) #5 0x00007fddea48eea5 start_thread (libpthread.so.0) #6 0x00007fdde99ac96d __clone (libc.so.6) Verified on 20.12.0-20: [root@wsfd-advnetlab21 bz1928012]# rpm -qa | grep -E "openvswitch2.13|ovn2.13" openvswitch2.13-2.13.0-82.el7fdp.x86_64 ovn2.13-host-20.12.0-20.el7fdp.x86_64 ovn2.13-central-20.12.0-20.el7fdp.x86_64 ovn2.13-20.12.0-20.el7fdp.x86_64 + coredumpctl No coredumps found. + echo 10 10 [root@wsfd-advnetlab21 bz1928012]# coredumpctl No coredumps found.
also Verified on rhel8 version: + ovn-nbctl --wait=hv pg-set-ports pg3 sw0-port1 sw0-port3 sw0-port6 + coredumpctl No coredumps found. + echo 10 10 [root@dell-per740-12 bz1928012]# rpm -qa | grep -E "openvswitch2.13|ovn2.13" ovn2.13-central-20.12.0-20.el8fdp.x86_64 openvswitch2.13-2.13.0-95.el8fdp.x86_64 ovn2.13-20.12.0-20.el8fdp.x86_64 ovn2.13-host-20.12.0-20.el8fdp.x86_64
also no crash on 20.12.0-24 with reproducer in comment 10, set VERIFIED
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory (ovn2.13 bug fix and enhancement update), and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHBA-2021:0839