[Bug 1978865] Re: openvswitch: nf_ct_put is called with null pointer

[Nick Rogers]

Please refer to the many Call Trace messages in CurrentDmesg.txt.

** Also affects: openvswitch (Ubuntu)
   Importance: Undecided
       Status: New

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Title:
  openvswitch: nf_ct_put is called with null pointer

Status in linux package in Ubuntu:
  New
Status in openvswitch package in Ubuntu:
  New

Bug description:
  Using an openvswitch bridge with conntrack flows causes a kernel
  warning trace for every packet. This does not break conntrack
  functionality, but causes a big packet forwarding performance
  degradation and very noisy and large kernel.log/journal/syslog/etc.
  The cause is a regression in the 5.15 LTS kernel. This seems to have
  been fixed in mainline 5.15.36, but I don't see the fix in any of the
  jammy branches.

  Upgrading to mainline 5.15.36 or beyond from the Ubuntu PPA fixes the
  problem.

  Here is a relevant discussion with reference to the fix applied to mainline:
  https://lore.kernel.org/netdev/YmaJlOS1YtPaq0EC@kroah.com/T/

  ProblemType: Bug
  DistroRelease: Ubuntu 22.04
  Package: linux-image-5.15.0-39-generic 5.15.0-39.42
  ProcVersionSignature: Ubuntu 5.15.0-39.42-generic 5.15.35
  Uname: Linux 5.15.0-39-generic x86_64
  NonfreeKernelModules: zfs zunicode zcommon znvpair zavl icp
  AlsaDevices:
   total 0
   crw-rw---- 1 root audio 116,  1 Jun 15 15:38 seq
   crw-rw---- 1 root audio 116, 33 Jun 15 15:38 timer
  AplayDevices: Error: [Errno 2] No such file or directory: 'aplay'
  ApportVersion: 2.20.11-0ubuntu82.1
  Architecture: amd64
  ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord'
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
  CRDA: N/A
  CasperMD5CheckMismatches: ./boot/grub/grub.cfg
  CasperMD5CheckResult: fail
  Date: Wed Jun 15 15:41:13 2022
  InstallationDate: Installed on 2022-06-15 (0 days ago)
  InstallationMedia: Ubuntu-Server 22.04 LTS "Jammy Jellyfish" - Release amd64 (20220421)
  IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig'
  MachineType: Supermicro SYS-E300-8D
  PciMultimedia:
   
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 astdrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.15.0-39-generic root=/dev/mapper/ubuntu--vg-ubuntu--lv ro
  RelatedPackageVersions:
   linux-restricted-modules-5.15.0-39-generic N/A
   linux-backports-modules-5.15.0-39-generic  N/A
   linux-firmware                             20220329.git681281e4-0ubuntu3.2
  RfKill: Error: [Errno 2] No such file or directory: 'rfkill'
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 10/31/2017
  dmi.bios.release: 5.6
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 1.0c
  dmi.board.asset.tag: To be filled by O.E.M.
  dmi.board.name: X10SDV-TP8F
  dmi.board.vendor: Supermicro
  dmi.board.version: 1.01
  dmi.chassis.asset.tag: To Be Filled By O.E.M.
  dmi.chassis.type: 1
  dmi.chassis.vendor: Supermicro
  dmi.chassis.version: 0123456789
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1.0c:bd10/31/2017:br5.6:svnSupermicro:pnSYS-E300-8D:pvr0123456789:rvnSupermicro:rnX10SDV-TP8F:rvr1.01:cvnSupermicro:ct1:cvr0123456789:skuTobefilledbyO.E.M.:
  dmi.product.family: To be filled by O.E.M.
  dmi.product.name: SYS-E300-8D
  dmi.product.sku: To be filled by O.E.M.
  dmi.product.version: 0123456789
  dmi.sys.vendor: Supermicro

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