I tracked it down to https://patchwork.kernel.org/patch/10027157/ just before 4.15-rc1. This appears to affect all DL360/DL380 Gen9 I've encountered so far. Opened https://bugzilla.kernel.org/show_bug.cgi?id=199779 and currently working with Sinan Kaya to disagnose.
** Tags added: kernel-bug-exists-upstream ** Bug watch added: Linux Kernel Bug Tracker #199779 https://bugzilla.kernel.org/show_bug.cgi?id=199779 ** Changed in: linux (Ubuntu) Status: Incomplete => Confirmed ** Changed in: linux (Ubuntu Bionic) Status: Incomplete => Confirmed ** Summary changed: - Reboot/shutdown kernel panic on HP DL360 Gen9 w/ bionic 4.15.0 + Reboot/shutdown kernel panic on HP DL360/DL380 Gen9 w/ bionic 4.15.0 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1771467 Title: Reboot/shutdown kernel panic on HP DL360/DL380 Gen9 w/ bionic 4.15.0 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1771467/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
