canonical-ubuntu-qa team mailing list archive

[Po-Hsu Lin <2039816@xxxxxxxxxxxxxxxxxx>]

With 5.15.0-84-generic-64k on scobee-kernel, with test case patched with
commit cb43c60 it is still failing. Without that commit the test will
pass.

It shows this is related to commit cb43c60, not the kernel function
itself.

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https://bugs.launchpad.net/bugs/2039816

Title:
  Regression for net:vrf-xfrm-tests.sh with 5.15 kernel on ARM64 node
  scobee-kernel

Status in ubuntu-kernel-tests:
  New

Bug description:
  Issue found on ARM64 node scobee-kernel with:
   * J-5.15.0-86.95 lowlatency
   * 5.15.0-85.95~20.04.2 generic
   * F-5.15.0-86.95~20.04.1 lowlatency
   * F-5.15.0-87.96~20.04.1 lowlatency-64k

  Test failed with:
  $ sudo ./vrf-xfrm-tests.sh

  No qdisc on VRF device
  TEST: IPv4 no xfrm policy                                           [ OK ]
  TEST: IPv6 no xfrm policy                                           [ OK ]
  TEST: IPv4 xfrm policy based on address                             [FAIL]
  TEST: IPv6 xfrm policy based on address                             [FAIL]
  TEST: IPv6 xfrm policy with VRF in selector                         [ OK ]
  TEST: IPv4 xfrm policy with xfrm device                             [FAIL]
  TEST: IPv6 xfrm policy with xfrm device                             [FAIL]

  netem qdisc on VRF device
  TEST: IPv4 no xfrm policy                                           [ OK ]
  TEST: IPv6 no xfrm policy                                           [ OK ]
  TEST: IPv4 xfrm policy based on address                             [FAIL]
  TEST: IPv6 xfrm policy based on address                             [FAIL]
  TEST: IPv6 xfrm policy with VRF in selector                         [ OK ]
  TEST: IPv4 xfrm policy with xfrm device                             [FAIL]
  TEST: IPv6 xfrm policy with xfrm device                             [FAIL]

  Tests passed:   6
  Tests failed:   8

  And this issue does not exist with the following combination:
  * F-generic-5.15.0-86.96~20.04.1 howzit-kernel
  * F-generic-5.15.0-86.96~20.04.1 wright-kernel
  * F-generic-64k-5.15.0-85.95~20.04.2 kopter-kernel
  * F-lowlatency-5.15.0-88.98~20.04.1 howzit-kernel
  * F-lowlatency-5.15.0-85.94 starmie-kernel
  * F-lowlatency-64k-5.15.0-85.94~20.04.1 howzit-kernel
  * J-lowlatency-64k-5.15.0-85.94 starmie-kernel
  * J-lowlatency-64k-5.15.0-86.95 howzit-kernel

  So it looks like this is hardware related.

  And the cause seems to be commit cb43c60 (" selftests: net: vrf-xfrm-tests: change authentication and encryption algos"), which lands on the Jammy tree since:
   * Ubuntu-5.15.0-85.95
   * Ubuntu-lowlatency-5.15.0-85.94

  With this commit reverted, this test can pass on node scobee-kernel
  with 5.15.0-87-lowlatency-64k

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