Description of problem: Nuage OVS crashes with Mellanox ConnectX-5 NICs and tcflower HW offload on OVS restart Additional info: What problem/issue/behavior are you having trouble with? What do you expect to see? System should not crash, it should be possible to start/stop ovs without crashing the host Where are you experiencing the behavior? What environment? this occurs when there is VXLAN traffic moving between VM using, the environment includes Mellanox ConnectX-5 NICs and OpenvSwitch with tc-flower support (Nuage Networks Virtualized Cloud Services 5.4.1u3) When does the behavior occur? Frequently? Repeatedly? At certain times? occurs regularly when restarting OVS with active flows/traffic 1. VF Switchdev with OVS offload enabled (we believe this also occurs for virtio VMs as well) 2. Run overlay traffic. I don't believe it matters how many flows but I reproduced it with 32 flows 3. systemctl restart openvswitch (Will not happen every time, I had to restart 4 times before the issue occurred. I waited for all 32 flows to be install in tc before restarting) 4. The compute will crash and reboot
*** This bug has been marked as a duplicate of bug 1687045 ***