I don't seem to be able to reproduce this. What I tried so far: 1. Installed a clean VM using an image from http://ftp.uni- kl.de/pub/linux/ubuntu-dvd/ubuntu-server/daily-live/pending/, ran apt install zfs-dkms - zfs.ko initialization successful.
2. Built zfs master myself and loaded the modules manually - zfs.ko initialization is successful. 3. Installed v5.15 kernel from https://kernel.ubuntu.com/~kernel- ppa/mainline/v5.15/ and ran apt install zfs-dkms - zfs.ko initialization successful. 4. Built zfs master myself again (for v5.15 this time) and loaded the modules manually - zfs.ko initialization is successful. Am I missing something? One thing is that zfs.ko from https://kernel.ubuntu.com/~arighi/zfs/ has vermagic=5.15.0-15-generic, whereas mine has vermagic=5.15.0-051500-generic. Is there another v5.15 kernel build that I can try? The default repos seem to have only v5.13: $ apt search linux-image-generic ... linux-image-generic/jammy,now 5.13.0.19.30 s390x [installed,automatic] Generic Linux kernel image ... -- 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 kernel soft lockup when zfs.ko is loaded on s390x w/ gcc >= 11.2.0-10ubuntu1 / gcc-11 PLT regression on s390x To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1954676/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
