canonical-ubuntu-qa team mailing list archive

[Jürg Häfliger <1892070@xxxxxxxxxxxxxxxxxx>]

** Tags added: kernel-daily-bug

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https://bugs.launchpad.net/bugs/1892070

Title:
  ip_defrag.sh in net from ubuntu_kernel_selftests ADT failure with
  focal/linux

Status in ubuntu-kernel-tests:
  Fix Released
Status in linux package in Ubuntu:
  Fix Released
Status in linux source package in Focal:
  Fix Released

Bug description:
  Testing failed on focal/linux 5.4.0-44.48:
      amd64: https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-focal/focal/amd64/l/linux/20200812_171444_31971@/log.gz
      arm64: https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-focal/focal/arm64/l/linux/20200812_210509_145fd@/log.gz
      ppc64el: https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-focal/focal/ppc64el/l/linux/20200812_165855_1dabd@/log.gz
      s390x: https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-focal/focal/s390x/l/linux/20200812_153600_9c7cb@/log.gz

  ip_defrag.sh fails with return code 255 without any output. Commenting
  the "set +x" line from the script and running it we get:

  $ sudo bash -x ./ip_defrag.sh
  + set -e
  ++ mktemp -u XXXXXX
  + readonly NETNS=ns-2Wn99i
  + NETNS=ns-2Wn99i
  + trap cleanup EXIT
  + setup
  + ip netns add ns-2Wn99i
  + ip -netns ns-2Wn99i link set lo up
  + ip netns exec ns-2Wn99i sysctl -w net.ipv4.ipfrag_high_thresh=9000000
  + ip netns exec ns-2Wn99i sysctl -w net.ipv4.ipfrag_low_thresh=7000000
  + ip netns exec ns-2Wn99i sysctl -w net.ipv4.ipfrag_time=1
  + ip netns exec ns-2Wn99i sysctl -w net.ipv6.ip6frag_high_thresh=9000000
  + ip netns exec ns-2Wn99i sysctl -w net.ipv6.ip6frag_low_thresh=7000000
  + ip netns exec ns-2Wn99i sysctl -w net.ipv6.ip6frag_time=1
  + ip netns exec ns-2Wn99i sysctl -w net.netfilter.nf_conntrack_frag6_high_thresh=9000000
  + cleanup
  + ip netns del ns-2Wn99i

  Running these manually we get the following error:

  $ sudo ip netns exec ns-2Wn99i sysctl -w net.netfilter.nf_conntrack_frag6_high_thresh=9000000
  sysctl: cannot stat /proc/sys/net/netfilter/nf_conntrack_frag6_high_thresh: No such file or directory

  This happens because this step needs the 'nf_defrag_ipv6' module to be
  loaded.

  This has always failed like this with the ADT tests but not always
  with our Regression Tests. I suspect that on Regression Tests there
  might be another testcase that's run before it that loads this module.

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