There is no symptom or error description in your report at all. Dmesg shows that the btrfs task is hung, but there's still not much to go with.
** Summary changed: - Systemd crash + task btrfs-transacti:1089 blocked for more than 120 seconds ** Package changed: systemd (Ubuntu) => linux (Ubuntu) ** Changed in: linux (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1557873 Title: task btrfs-transacti:1089 blocked for more than 120 seconds To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1557873/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs