All autopkgtests for the newly accepted makedumpfile (1:1.6.5-1ubuntu1~18.04.3) for bionic have finished running. The following regressions have been reported in tests triggered by the package:
makedumpfile/1:1.6.5-1ubuntu1~18.04.3 (ppc64el) Please visit the excuses page listed below and investigate the failures, proceeding afterwards as per the StableReleaseUpdates policy regarding autopkgtest regressions [1]. https://people.canonical.com/~ubuntu-archive/proposed- migration/bionic/update_excuses.html#makedumpfile [1] https://wiki.ubuntu.com/StableReleaseUpdates#Autopkgtest_Regressions Thank you! -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to kexec-tools in Ubuntu. https://bugs.launchpad.net/bugs/1828597 Title: KDump boot fails with nr_cpus=1 Status in The Ubuntu-power-systems project: In Progress Status in kexec-tools package in Ubuntu: Invalid Status in linux package in Ubuntu: Invalid Status in makedumpfile package in Ubuntu: Fix Released Status in makedumpfile source package in Bionic: Fix Committed Status in kexec-tools source package in Cosmic: Invalid Status in kexec-tools source package in Disco: Invalid Status in linux source package in Disco: Invalid Status in makedumpfile source package in Disco: Fix Committed Status in kexec-tools source package in Eoan: Invalid Status in linux source package in Eoan: Invalid Status in makedumpfile source package in Eoan: Fix Released Bug description: [Impact] The kdump kernel will crash during its boot if booted on a CPU other than 0. [Test case] Trigger a crash using taskset -c X, where X is not 0 and is a present CPU. Check that the dump is successful. echo c | sudo taskset -c 1 tee /proc/sysrq-trigger [Regression potential] This will cause more memory to be used by the dump kernel, which may cause OOMs during the dump. The fix is restricted to ppc64el. == Comment: #0 - Hari Krishna Bathini - 2019-05-10 06:38:21 == ---Problem Description--- kdump boots fails in some environments when nr_cpus=1 is passed ---uname output--- na Machine Type = na ---Debugger--- A debugger is not configured ---Steps to Reproduce--- 1. configure kdump 2. trigger crash on non-boot cpu Expected result: Capture dump and reboot Actual result: Hang in early kdump boot process after crash Userspace tool common name: kdump-tools The userspace tool has the following bit modes: 64-bit Userspace rpm: kdump-tools Userspace tool obtained from project website: na == Comment: #1 - Hari Krishna Bathini - 2019-05-10 06:45:46 == Launchpad bug 1560552 added "nr_cpus=1" support on ppc64 though this change never made it upstream as maintainer has a few apprehensions.. With 4.18 kernels, this change is dropped on Ubuntu kernels too. With nr_cpus=1 support in kernel, kdump-tools was also updated to use "nr_cpsu=1" by default instead of "maxcpus=1" (see launchpad bug 1568952). This kdump-tools change has to be reverted to make it consist with the kernel change. Note that "nr_cpus=1 change had a issues in kdump guest environment even with "nr_cpus=1" support for kdump in kernel. So, even not withstanding the kernel revert, it is better to default to "maxcpus=1" on all kernel versions. So, please revert the kdump-tools fix that went in with launchpad bug 1568952 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-power-systems/+bug/1828597/+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
