A quick update: zfs.ko gets quite a lot of relocations with the gcc patch, and the total size of PLT entries generated by kernel's apply_rela() exceeds 64k. Each PLT entry contains a short jump to an expoline thunk located at the end of the PLT array, which is out of range for the first PLT entries. When expolines are off (nobp=1), this problem does not occur. I'm currently looking into a kernel fix.
-- 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
