Public bug reported: Test cpu-hotplug from ubuntu_kernel_selftests failed with bionic:linux- azure-4.15 running on a Basic A2 with 2 cores (besides other instance types):
selftests: cpu-on-off-test.sh ======================================== pid 28041's current affinity mask: 3 pid 28041's new affinity mask: 1 CPU online/offline summary: present_cpus = 0-1 present_max = 1 Cpus in online state: 0-1 Cpus in offline state: 0 Limited scope test: one hotplug cpu (leaves cpu in the original state): online to offline to online: cpu 1 not ok 1..1 selftests: cpu-on-off-test.sh [FAIL] ./cpu-on-off-test.sh: line 94: echo: write error: Device or resource busy offline_cpu_expect_success 1: unexpected fail http://10.246.72.46/4.15.0-1112.124~16.04.1-azure/xenial-linux-azure- azure- amd64-4.15.0-Basic_A2-ubuntu_kernel_selftests/ubuntu_kernel_selftests/results/ubuntu_kernel_selftests .cpu-hotplug/debug/ubuntu_kernel_selftests.cpu-hotplug.DEBUG.html The problem happens at "autotest-client-tests/ubuntu_kernel_selftests /cpu-on-off-test.sh" when executing: echo 0 > $SYSFS/devices/system/cpu/cpu$1/online ** Affects: ubuntu-kernel-tests Importance: Undecided Status: New ** Affects: linux-azure (Ubuntu) Importance: Undecided Status: New ** Affects: linux-azure-4.15 (Ubuntu) Importance: Undecided Status: New ** Affects: linux-azure (Ubuntu Trusty) Importance: Undecided Status: New ** Affects: linux-azure-4.15 (Ubuntu Trusty) Importance: Undecided Status: New ** Affects: linux-azure (Ubuntu Xenial) Importance: Undecided Status: New ** Affects: linux-azure-4.15 (Ubuntu Xenial) Importance: Undecided Status: New ** Affects: linux-azure (Ubuntu Bionic) Importance: Undecided Status: New ** Affects: linux-azure-4.15 (Ubuntu Bionic) Importance: Undecided Status: New ** Tags: 4.15 amd64 azure bionic kqa-blocker sru-20210315 trusty ubuntu-kernel-selftests xenial ** Also affects: linux-azure-4.15 (Ubuntu) Importance: Undecided Status: New ** Also affects: linux-azure-4.15 (Ubuntu Bionic) Importance: Undecided Status: New ** Also affects: linux-azure-4.15 (Ubuntu Xenial) Importance: Undecided Status: New ** Also affects: linux-azure-4.15 (Ubuntu Trusty) Importance: Undecided Status: New ** Also affects: linux-azure (Ubuntu) Importance: Undecided Status: New ** Tags added: 4.15 amd64 azure bionic kqa-blocker sru-20210315 trusty ubuntu-kernel-selftests xenial -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1923114 Title: ubuntu_kernel_selftests: ./cpu-on-off-test.sh: line 94: echo: write error: Device or resource busy To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-kernel-tests/+bug/1923114/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
