[Bug 1977847] Re: OVS/CT kernel stack trace during boot on Jammy OS

[Shane Peters]

Has anybody found a workaround for this by chance? I'm getting the same
stack trace on 5.15.0-35-generic and 2.17.0-0ubuntu1

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Title:
  OVS/CT kernel stack trace during boot on Jammy OS

Status in openvswitch package in Ubuntu:
  Confirmed

Bug description:
  Charmed Openstack deployment (Yoga) with Jammy series
  (For testing OVN Hardware Offload with Connection Tracking)

  # cat /etc/lsb-release 
  DISTRIB_ID=Ubuntu
  DISTRIB_RELEASE=22.04
  DISTRIB_CODENAME=jammy
  DISTRIB_DESCRIPTION="Ubuntu 22.04 LTS"

  root at node3:/home/ubuntu# uname -a
  Linux node3 5.15.0-35-generic #36-Ubuntu SMP Sat May 21 02:24:07 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux

  root at node3:/home/ubuntu# ovs-vsctl --version
  ovs-vsctl (Open vSwitch) 2.17.0
  DB Schema 8.3.0

  I see the following trace on dmesg every time the server boots up
  (full trace in the attached file):

  [Mon Jun  6 10:51:09 2022] RIP: 0010:__ovs_ct_lookup+0x36c/0x3e0
  [openvswitch]

  [Mon Jun  6 10:51:09 2022] Call Trace:
  [Mon Jun  6 10:51:09 2022]  <TASK>
  [Mon Jun  6 10:51:09 2022]  ovs_ct_execute+0x3a2/0x490 [openvswitch]
  [Mon Jun  6 10:51:09 2022]  do_execute_actions+0xbb/0xa90 [openvswitch]
  [Mon Jun  6 10:51:09 2022]  ? __ovs_nla_copy_actions+0x5a0/0x8a0 [openvswitch]
  [Mon Jun  6 10:51:09 2022]  ? __kmalloc+0x179/0x330
  [Mon Jun  6 10:51:09 2022]  ovs_execute_actions+0x4c/0x110 [openvswitch]
  [Mon Jun  6 10:51:09 2022]  ovs_packet_cmd_execute+0x280/0x300 [openvswitch]
  [Mon Jun  6 10:51:09 2022]  genl_family_rcv_msg_doit+0xe7/0x150
  [Mon Jun  6 10:51:09 2022]  genl_rcv_msg+0xe2/0x1e0
  [Mon Jun  6 10:51:09 2022]  ? ovs_vport_cmd_del+0x200/0x200 [openvswitch]

  I see the same trace when deploying OpenStack with Focal series and
  HWE-Edge kernel...

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