canonical-ubuntu-qa team mailing list archive

[Jürg Häfliger <1942092@xxxxxxxxxxxxxxxxxx>]

** Tags added: kernel-daily-bug

-- 
You received this bug notification because you are a member of Canonical
Platform QA Team, which is subscribed to ubuntu-kernel-tests.
https://bugs.launchpad.net/bugs/1942092

Title:
  linux-azure: main(): sched_setscheduler(): Operation not permitted

Status in ubuntu-kernel-tests:
  New
Status in linux-azure package in Ubuntu:
  New
Status in linux-azure-4.15 package in Ubuntu:
  New
Status in linux-azure-5.11 package in Ubuntu:
  New
Status in linux-azure-5.4 package in Ubuntu:
  New
Status in linux-azure-5.8 package in Ubuntu:
  New
Status in linux-azure source package in Trusty:
  New
Status in linux-azure-4.15 source package in Trusty:
  Invalid
Status in linux-azure-5.11 source package in Trusty:
  Invalid
Status in linux-azure-5.4 source package in Trusty:
  Invalid
Status in linux-azure-5.8 source package in Trusty:
  Invalid
Status in linux-azure source package in Xenial:
  New
Status in linux-azure-4.15 source package in Xenial:
  Invalid
Status in linux-azure-5.11 source package in Xenial:
  Invalid
Status in linux-azure-5.4 source package in Xenial:
  Invalid
Status in linux-azure-5.8 source package in Xenial:
  Invalid
Status in linux-azure source package in Bionic:
  Invalid
Status in linux-azure-4.15 source package in Bionic:
  New
Status in linux-azure-5.11 source package in Bionic:
  Invalid
Status in linux-azure-5.4 source package in Bionic:
  Fix Released
Status in linux-azure-5.8 source package in Bionic:
  Invalid
Status in linux-azure source package in Focal:
  Fix Released
Status in linux-azure-4.15 source package in Focal:
  Invalid
Status in linux-azure-5.11 source package in Focal:
  Fix Released
Status in linux-azure-5.4 source package in Focal:
  Invalid
Status in linux-azure-5.8 source package in Focal:
  New
Status in linux-azure source package in Hirsute:
  Fix Released
Status in linux-azure-4.15 source package in Hirsute:
  Invalid
Status in linux-azure-5.11 source package in Hirsute:
  Invalid
Status in linux-azure-5.4 source package in Hirsute:
  Invalid
Status in linux-azure-5.8 source package in Hirsute:
  Invalid

Bug description:
  [Impact]

  We have several regressions with RT and ADT with the azure kernels.
  The tests seem to fail when calling sched_setscheduler() or with
  related operations. This was probably introduced by LP:#1939024 that
  enabled CONFIG_RT_GROUP_SCHED.

  We should revert this change until we better understand the impact it
  can cause.

  * ubuntu_ltp_stable

  The ltp syscall regression test is failing for all the azure kernels
  with:

  main(): sched_setscheduler(): Operation not permitted

  http://10.246.75.167/2021.08.16/hirsute/linux-
  azure/5.11.0-1014.15/sru-azure-azure-Standard_A2_v2-ubuntu_ltp_stable-
  log.txt

  * ubuntu_qrt_apparmor

  Error: syscall_setscheduler failed. Test 'syscall_setscheduler --
  unconfined' was expected to 'pass'. Reason for failure 'FAIL: Can't
  set SCHED_RR: Operation not permitted'

  Error: syscall_setscheduler failed. Test 'syscall_setscheduler --
  unconfined' was expected to 'pass'. Reason for failure 'FAIL: Can't
  set SCHED_RR: Operation not permitted'

  * systemd ADT (Hirsute)

  https://autopkgtest.ubuntu.com/results/autopkgtest-
  hirsute/hirsute/amd64/s/systemd/20210827_233206_a2599@/log.gz

  [Test Plan]

  The kernel should pass the regression and adt tests.

  [Where problems could occur]

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu-kernel-tests/+bug/1942092/+subscriptions