It looks like bug #49178 has a lot of people experiencing this crash. It is also marked as Critical, while this is only Medium. Now that I know the exact cause, it will be much easier to avoid this.
-- should warn at partitioning stage if /boot is on XFS https://launchpad.net/bugs/47848 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
