canonical-ubuntu-qa team mailing list archive

[Jürg Häfliger <1856010@xxxxxxxxxxxxxxxxxx>]

** Tags added: kernel-daily-bug

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https://bugs.launchpad.net/bugs/1856010

Title:
  xfrm_policy.sh / pmtu.sh / udpgso_bench.sh from net in
  ubuntu_kernel_selftests will fail with timeout if running the whole
  suite

Status in ubuntu-kernel-tests:
  Fix Released
Status in linux package in Ubuntu:
  Opinion
Status in linux-oem-5.6 package in Ubuntu:
  Invalid
Status in linux source package in Bionic:
  Fix Released
Status in linux-oem-5.6 source package in Bionic:
  Invalid
Status in linux source package in Focal:
  Opinion
Status in linux-oem-5.6 source package in Focal:
  Won't Fix
Status in linux source package in Groovy:
  Opinion
Status in linux-oem-5.6 source package in Groovy:
  Invalid
Status in linux source package in Hirsute:
  Opinion
Status in linux-oem-5.6 source package in Hirsute:
  Invalid
Status in linux source package in Impish:
  Opinion
Status in linux-oem-5.6 source package in Impish:
  Invalid

Bug description:
  [Impact]
  These 3 tests will fail with timeout error when running the whole
  "net" test in ubuntu_kernel_selftests:
    * not ok 12 selftests: net: xfrm_policy.sh # TIMEOUT
    * not ok 16 selftests: net: pmtu.sh # TIMEOUT
    * not ok 19 selftests: net: udpgso_bench.sh # TIMEOUT

  They will pass if you run them manually. This is because of the
  default 45 seconds timeout in kselftest framework.

  A quick test shows these tests will take about:
    xfrm_policy.sh - 2m19.690s
    pmtu.sh - 3m6.832s
    udpgso_bench.sh - 0m57.985s

  [Fix]
  * b881d089c7c9c7 ("selftests/net: bump timeout to 5 minutes")

  We have commit 852c8cbf34d3b3 ("selftests/kselftest/runner.sh: Add 45
  second timeout per test") for default timeout added since Bionic.

  However there is a SAUCE patch ("UBUNTU: SAUCE: selftests/net --
  disable timeout") to disable timeout for the net test in newer
  releases. I think we can leave it as-is for the moment unless some
  test is hanging too long because of that.

  Therefore Only Bionic needs this patch, the patch can be applied with
  some context adjustment.

  [Test]
  With this patch applied, these tests should have a chance to finish.

  [Where problems could occur]
  The fix is just for testing tool, no actual impact to real kernel
  functions. If this 5 minutes timeout is not enough, we might still
  seeing this kind of failures in the test report.


  [Original Bug Report]
  These 3 tests will fail with timeout when running the whole "net" test in ubuntu_kernel_selftests:
    * not ok 12 selftests: net: xfrm_policy.sh # TIMEOUT
    * not ok 16 selftests: net: pmtu.sh # TIMEOUT
    * not ok 19 selftests: net: udpgso_bench.sh # TIMEOUT

  However they will pass if you run them manually.

  So there must be some test in net that will cause this.

  From the test result it looks like the test was executed in the following sequence:
   ok 1 selftests: net: reuseport_bpf
   ok 2 selftests: net: reuseport_bpf_cpu
   ok 3 selftests: net: reuseport_bpf_numa
   ok 4 selftests: net: reuseport_dualstack
   # Successok 5 selftests: net: reuseaddr_conflict
   ok 6 selftests: net: tls
   ok 7 selftests: net: run_netsocktests
   ok 8 selftests: net: run_afpackettests
   ok 9 selftests: net: test_bpf.sh
   ok 10 selftests: net: netdevice.sh
   ok 11 selftests: net: rtnetlink.sh
   not ok 12 selftests: net: xfrm_policy.sh # TIMEOUT
   not ok 13 selftests: net: test_blackhole_dev.sh # exit=1
   ok 14 selftests: net: fib_tests.sh
   ok 15 selftests: net: fib-onlink-tests.sh
   not ok 16 selftests: net: pmtu.sh # TIMEOUT
   ok 17 selftests: net: udpgso.sh
   not ok 18 selftests: net: ip_defrag.sh # exit=255
   not ok 19 selftests: net: udpgso_bench.sh # TIMEOUT
   ok 20 selftests: net: fib_rule_tests.sh
   not ok 21 selftests: net: msg_zerocopy.sh # exit=1
   ok 22 selftests: net: psock_snd.sh
   ok 23 selftests: net: udpgro_bench.sh
   ok 24 selftests: net: udpgro.sh
   ok 25 selftests: net: test_vxlan_under_vrf.sh
   ok 26 selftests: net: reuseport_addr_any.sh
   ok 27 selftests: net: test_vxlan_fdb_changelink.sh
   ok 28 selftests: net: so_txtime.sh
   ok 29 selftests: net: ipv6_flowlabel.sh
   ok 30 selftests: net: tcp_fastopen_backup_key.sh

  ProblemType: Bug
  DistroRelease: Ubuntu 19.10
  Package: linux-image-5.3.0-1009-aws 5.3.0-1009.10
  ProcVersionSignature: User Name 5.3.0-1009.10-aws 5.3.13
  Uname: Linux 5.3.0-1009-aws aarch64
  ApportVersion: 2.20.11-0ubuntu8.3
  Architecture: arm64
  Date: Wed Dec 11 06:42:39 2019
  Ec2AMI: ami-047cec24582f6ae0d
  Ec2AMIManifest: (unknown)
  Ec2AvailabilityZone: us-west-2c
  Ec2InstanceType: a1.large
  Ec2Kernel: unavailable
  Ec2Ramdisk: unavailable
  SourcePackage: linux-aws
  UpgradeStatus: No upgrade log present (probably fresh install)

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