[Bug 1852903] Re: systemd Caught <SEGV>, dumped core

[Arie Skliarouk]

** Attachment added: "systemd 237-3ubuntu10.31 coredump (amd64)"
   https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1852903/+attachment/5306050/+files/core.systemd.2982.gz

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Title:
  systemd Caught <SEGV>, dumped core

Status in systemd package in Ubuntu:
  New

Bug description:
  Several days ago an ubuntu 18.04 in ec2 env updated systemd and udev to 237-3ubuntu10.31
  This caused systemd to segfault and stop receiving any systemctl command (they timeout).

  [  198.482652] systemd[1]: segfault at 50 ip 00005630ddd60200 sp 00007ffc9c3ea890 error 4 in systemd (deleted)[5630ddcc1000+14e000]
  [  278.664729] systemd-journald[451]: Failed to send WATCHDOG=1 notification message: Connection refused
  [  368.462136] systemd-journald[451]: Failed to send WATCHDOG=1 notification message: Transport endpoint is not connected
  [  458.496689] systemd-journald[451]: Failed to send WATCHDOG=1 notification message: Transport endpoint is not connected

  I downgraded to 237-3ubuntu10.29 to no avail.
  Then I downgraded to 237-3ubuntu10:
  apt install udev=237-3ubuntu10 systemd=237-3ubuntu10 systemd-sysv=237-3ubuntu10 libsystemd0:amd64=237-3ubuntu10 libudev1:amd64=237-3ubuntu10 libnss-systemd:amd64=237-3ubuntu10

  and that did not help either.
  The machine is unusable at the moment.

  Attaching coredump of systemd (version 237-3ubuntu10.31)

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