stress tested with 5.15.0-60-generic, there are 20 failures reported in 100 attempts.
So it looks like a flaky test instead of a regression. I was too lucky to get multiple failures in a row. ** Attachment added: "stress-with-60.log" https://bugs.launchpad.net/ubuntu-kernel-tests/+bug/2007908/+attachment/5649156/+files/stress-with-60.log ** Summary changed: - [Possible Regression] powerpc/tm:tm-resched-dscr in ubuntu_kernel_selftests failed on P8 + powerpc/tm:tm-resched-dscr in ubuntu_kernel_selftests flaky on P8 node gulpin -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2007908 Title: powerpc/tm:tm-resched-dscr in ubuntu_kernel_selftests flaky on P8 node gulpin Status in ubuntu-kernel-tests: New Status in linux package in Ubuntu: Incomplete Bug description: Issue found with Focal hwe-5.15.0-66.73~20.04.1 on Power8 node "gulpin". Test failed with: test: tm_resched_dscr tags: git_version:bfd31f0-dirty Binding to cpu 8 main test running as pid 2542 Check DSCR TM context switch: !! killing tm_resched_dscr !! child died by signal 15 failure: tm_resched_dscr Nothing interesting in dmesg / syslog: $ dmesg | tail [ 20.556968] IPv6: ADDRCONF(NETDEV_CHANGE): enP34p1s0f0: link becomes ready [ 20.572182] tg3 0022:01:00.2 enP34p1s0f2: Link is up at 1000 Mbps, full duplex [ 20.572187] tg3 0022:01:00.2 enP34p1s0f2: Flow control is off for TX and off for RX [ 20.572191] tg3 0022:01:00.2 enP34p1s0f2: EEE is disabled [ 20.572201] IPv6: ADDRCONF(NETDEV_CHANGE): enP34p1s0f2: link becomes ready [ 24.598633] kauditd_printk_skb: 19 callbacks suppressed [ 24.598640] audit: type=1400 audit(1676957767.768:31): apparmor="DENIED" operation="open" profile="/usr/sbin/ntpd" name="/snap/bin/" pid=2171 comm="ntpd" requested_mask="r" denied_mask="r" fsuid=0 ouid=0 [ 27.682671] loop3: detected capacity change from 0 to 8 [ 28.618195] fbcon: Taking over console [ 28.747706] Console: switching to colour frame buffer device 128x48 This issue does not exist with 5.15.0-60.66~20.04.1 test: tm_resched_dscr tags: git_version:bfd31f0-dirty Binding to cpu 8 main test running as pid 28806 Check DSCR TM context switch: OK success: tm_resched_dscr We didn't catch this issue in Jammy 5.15 as Power8 was not supported there, and this test was skipped on the Power9 node that got tested with Jammy (looks like because of the lack of PPC_FEATURE2_HTM) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-kernel-tests/+bug/2007908/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
