Moving to Debian zfs 2.1.1 + applying the debdiff in attach seems to fix the problem.
** Patch added: "zfs-update-to-2.1.1.debdiff" https://bugs.launchpad.net/ubuntu/+source/zfs-linux/+bug/1954676/+attachment/5547343/+files/zfs-update-to-2.1.1.debdiff ** Description changed: + [Impact] + Installing zfs-dkms seems to trigger a soft lockup issue as soon as zfs.ko is loaded. When the soft lockup happens the system isn't reachable anymore via ssh and on the console we can see some exlicit rcu stall warnings. + + [Test case] + + On s390x install the latest 5.15 Jammy kernel and run: + apt install zfs-dkms + + [Fix] + + Moving to zfs 2.1.1 (from Debian) seems to fix the problem. + + [Regression potential] + + It is a major zfs update so we may introduce zfs regressions, but it + seems sane to be aligned with the upstream zfs version. Also the zfs + smoke tests passed across all architectures, so moving to this new + version seems the right thing to do. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1954676 Title: jammy 5.15 soft lockup when zfs.ko is loaded on s390x To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/zfs-linux/+bug/1954676/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
