[Bug 1953366] Re: spectre_v2 from ubuntu_kernel_selftests ADT test failure with 5.13/5.11 ppc64el
Thadeu's patch "3c42e9542050 selftests/powerpc/spectre_v2: Return skip code when miss_percent is high" was merged on mainline for v5.17-rc1 and applied via upstream stable to jammy/linux for Ubuntu-5.15.0-19.19 and to impish/linux for Ubuntu-5.13.0-40.45. ** Changed in: linux (Ubuntu) Status: Incomplete => Fix Released ** Changed in: linux (Ubuntu Impish) Status: Confirmed => Fix Released ** Changed in: linux (Ubuntu Jammy) Status: Confirmed => Fix Released ** Changed in: ubuntu-kernel-tests Status: New => Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1953366 Title: spectre_v2 from ubuntu_kernel_selftests ADT test failure with 5.13/5.11 ppc64el To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-kernel-tests/+bug/1953366/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1953366] Re: spectre_v2 from ubuntu_kernel_selftests ADT test failure with 5.13/5.11 ppc64el
** Also affects: linux (Ubuntu Jammy) Importance: Undecided Status: New ** Also affects: linux (Ubuntu Impish) Importance: Undecided Status: New ** Changed in: linux (Ubuntu Impish) Status: New => Confirmed ** Changed in: linux (Ubuntu Jammy) Status: New => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1953366 Title: spectre_v2 from ubuntu_kernel_selftests ADT test failure with 5.13/5.11 ppc64el To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-kernel-tests/+bug/1953366/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1953366] Re: spectre_v2 from ubuntu_kernel_selftests ADT test failure with 5.13/5.11 ppc64el
https://lore.kernel.org/linuxppc- dev/20211207130557.40566-1-casca...@canonical.com/T/#u -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1953366 Title: spectre_v2 from ubuntu_kernel_selftests ADT test failure with 5.13/5.11 ppc64el To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-kernel-tests/+bug/1953366/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1953366] Re: spectre_v2 from ubuntu_kernel_selftests ADT test failure with 5.13/5.11 ppc64el
This looks like very similar to the vulnerable case that I changed to return as skipped. It's possible that the host is doing one mitigation while the guest is informed of a different mitigation, leading to this mis-match. I will take this upstream and see how it goes. Cascardo. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1953366 Title: spectre_v2 from ubuntu_kernel_selftests ADT test failure with 5.13/5.11 ppc64el To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-kernel-tests/+bug/1953366/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1953366] Re: spectre_v2 from ubuntu_kernel_selftests ADT test failure with 5.13/5.11 ppc64el
As this is failing on ADT, it is failing on VMs on an environment we don't have much control of. This could be caused by host kernel, qemu or libvirt combinations that will make the guest kernel observe a given mitigation while it's not really in place. This test was added after 5.4, so the failure won't be observed on kernels before 5.11. I have fixed it once so it detects the Vulnerable case and have the test return the SKIP code. We need to fix this sooner rather than later, otherwise ADT test results will continue to fail. The other option is to skip this on our tests. Cascardo. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1953366 Title: spectre_v2 from ubuntu_kernel_selftests ADT test failure with 5.13/5.11 ppc64el To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-kernel-tests/+bug/1953366/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1953366] Re: spectre_v2 from ubuntu_kernel_selftests ADT test failure with 5.13/5.11 ppc64el
** Also affects: ubuntu-kernel-tests Importance: Undecided Status: New ** Tags added: sru-20211129 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1953366 Title: spectre_v2 from ubuntu_kernel_selftests ADT test failure with 5.13/5.11 ppc64el To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-kernel-tests/+bug/1953366/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1953366] Re: spectre_v2 from ubuntu_kernel_selftests ADT test failure with 5.13/5.11 ppc64el
** Tags added: 5.13 ubuntu-kernel-selftests -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1953366 Title: spectre_v2 from ubuntu_kernel_selftests ADT test failure with 5.13/5.11 ppc64el To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-kernel-tests/+bug/1953366/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1953366] Re: spectre_v2 from ubuntu_kernel_selftests ADT test failure with 5.13/5.11 ppc64el
** Description changed: This is a scripted bug report about ADT failures while running linux tests for linux/5.13.0-23.23 on impish. Whether this is caused by the dep8 tests of the tested source or the kernel has yet to be determined. + + This test was previously being skipped. After recent test changes, it's + now showing up as a failure. Not a regression. ubuntu_kernel_selftests.powerpc/security:spectre_v2 consistently failing on 5.13 and 5.11 Found failing on: - Impish/linux 5.13.0-23.23 - Hirsute/linux 5.11.0-42.46 (passed on first run, though failing after retrigger) - Foal/hwe-5.13 5.13.0-23.23~20.04.1 - Focal/hwe-5.11 5.11.0-42.46~20.04.1 - + Impish/linux 5.13.0-23.23 + Hirsute/linux 5.11.0-42.46 (passed on first run, though failing after retrigger) + Foal/hwe-5.13 5.13.0-23.23~20.04.1 + Focal/hwe-5.11 5.11.0-42.46~20.04.1 23:45:31 DEBUG| [stdout] # selftests: powerpc/security: spectre_v2 23:45:31 DEBUG| [stdout] # test: spectre_v2 23:45:31 DEBUG| [stdout] # tags: git_version:d9c024c2-dirty 23:45:50 DEBUG| [stdout] # sysfs reports: 'Mitigation: Software count cache flush, Software link stack flush' 23:45:50 DEBUG| [stdout] # PM_BR_PRED_CCACHE: result 2147483649 running/enabled 19680067308 23:45:50 DEBUG| [stdout] # PM_BR_MPRED_CCACHE: result 2147475077 running/enabled 19680064034 23:45:50 DEBUG| [stdout] # PM_BR_PRED_PCACHE: result 0 running/enabled 19680062840 23:45:50 DEBUG| [stdout] # PM_BR_MPRED_PCACHE: result 0 running/enabled 19680061722 23:45:50 DEBUG| [stdout] # Miss percent 99 % 23:45:50 DEBUG| [stdout] # Branch misses > 15% unexpected in this configuration! 23:45:50 DEBUG| [stdout] # Possible mis-match between reported & actual mitigation 23:45:50 DEBUG| [stdout] # failure: spectre_v2 23:45:50 DEBUG| [stdout] not ok 1 selftests: powerpc/security: spectre_v2 # exit=1 23:45:50 DEBUG| [stdout] make: Leaving directory '/tmp/autopkgtest.XkeXuO/build.i7C/src/autotest/client/tmp/ubuntu_kernel_selftests/src/linux/tools/testing/selftests/powerpc/security' - Testing failed on: ppc64el: https://autopkgtest.ubuntu.com/results/autopkgtest-impish/impish/ppc64el/l/linux/20211204_000820_141a2@/log.gz -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1953366 Title: spectre_v2 from ubuntu_kernel_selftests ADT test failure with 5.13/5.11 ppc64el To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1953366/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1953366] Re: spectre_v2 from ubuntu_kernel_selftests ADT test failure with 5.13/5.11 ppc64el
** Summary changed: - spectre_v2 from ubuntu_kernel_selftests failure with Impish/Hirsute ppc64el + spectre_v2 from ubuntu_kernel_selftests ADT test failure with 5.13/5.11 ppc64el ** Description changed: This is a scripted bug report about ADT failures while running linux tests for linux/5.13.0-23.23 on impish. Whether this is caused by the dep8 tests of the tested source or the kernel has yet to be determined. + ubuntu_kernel_selftests.powerpc/security:spectre_v2 consistently failing + on 5.13 and 5.11 + + Found failing on: + Impish/linux 5.13.0-23.23 + Hirsute/linux 5.11.0-42.46 (passed on first run, though failing after retrigger) + Foal/hwe-5.13 5.13.0-23.23~20.04.1 + Focal/hwe-5.11 5.11.0-42.46~20.04.1 + + + 23:45:31 DEBUG| [stdout] # selftests: powerpc/security: spectre_v2 + 23:45:31 DEBUG| [stdout] # test: spectre_v2 + 23:45:31 DEBUG| [stdout] # tags: git_version:d9c024c2-dirty + 23:45:50 DEBUG| [stdout] # sysfs reports: 'Mitigation: Software count cache flush, Software link stack flush' + 23:45:50 DEBUG| [stdout] # PM_BR_PRED_CCACHE: result 2147483649 running/enabled 19680067308 + 23:45:50 DEBUG| [stdout] # PM_BR_MPRED_CCACHE: result 2147475077 running/enabled 19680064034 + 23:45:50 DEBUG| [stdout] # PM_BR_PRED_PCACHE: result 0 running/enabled 19680062840 + 23:45:50 DEBUG| [stdout] # PM_BR_MPRED_PCACHE: result 0 running/enabled 19680061722 + 23:45:50 DEBUG| [stdout] # Miss percent 99 % + 23:45:50 DEBUG| [stdout] # Branch misses > 15% unexpected in this configuration! + 23:45:50 DEBUG| [stdout] # Possible mis-match between reported & actual mitigation + 23:45:50 DEBUG| [stdout] # failure: spectre_v2 + 23:45:50 DEBUG| [stdout] not ok 1 selftests: powerpc/security: spectre_v2 # exit=1 + 23:45:50 DEBUG| [stdout] make: Leaving directory '/tmp/autopkgtest.XkeXuO/build.i7C/src/autotest/client/tmp/ubuntu_kernel_selftests/src/linux/tools/testing/selftests/powerpc/security' + + Testing failed on: - amd64: https://autopkgtest.ubuntu.com/results/autopkgtest-impish/impish/amd64/l/linux/20211129_233258_23074@/log.gz - arm64: https://autopkgtest.ubuntu.com/results/autopkgtest-impish/impish/arm64/l/linux/20211204_001958_634a0@/log.gz - ppc64el: https://autopkgtest.ubuntu.com/results/autopkgtest-impish/impish/ppc64el/l/linux/20211204_000820_141a2@/log.gz - s390x: https://autopkgtest.ubuntu.com/results/autopkgtest-impish/impish/s390x/l/linux/20211129_205509_9a143@/log.gz + ppc64el: https://autopkgtest.ubuntu.com/results/autopkgtest-impish/impish/ppc64el/l/linux/20211204_000820_141a2@/log.gz -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1953366 Title: spectre_v2 from ubuntu_kernel_selftests ADT test failure with 5.13/5.11 ppc64el To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1953366/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
