[Bug 1789875] Re: Failed to send coredump datagram: No buffer space available

[Dan Streetman]

please reopen if this is still an issue

** Changed in: systemd (Ubuntu)
       Status: New => Invalid

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Title:
  Failed to send coredump datagram: No buffer space available

Status in systemd package in Ubuntu:
  Invalid

Bug description:
  lsb_release -rd:
  Description:    Ubuntu 18.04.1 LTS
  Release:        18.04

  apt-cache policy systemd:
  systemd:
    Installed: 237-3ubuntu10.3
    Candidate: 237-3ubuntu10.3
    Version table:
   *** 237-3ubuntu10.3 500
          500 http://no.archive.ubuntu.com/ubuntu bionic-updates/main amd64 Packages
          100 /var/lib/dpkg/status
       237-3ubuntu10 500
          500 http://no.archive.ubuntu.com/ubuntu bionic/main amd64 Packages


  A program running inside a docker container crashes and is supposed to
  generate a core dump. I am not sure if the docker part is relevant.
  The program prints the message `Aborted (core dumped)` however
  `coredumpctl` does sometimes not show the core dump.

  In `/var/log/syslog` I see:
  systemd[1]: Started Process Core Dump (PID 783/UID 0).
  systemd-coredump[783]: Failed to send coredump datagram: No buffer space available
  systemd-coredump[784]: Coredump file descriptor missing.

  The core limit is correctly set to unlimited and I do get core dumps
  when trying the same thing with a testing executable which just calls
  `abort` in the same docker container. The program that fails to core
  dump uses a lot of memory (5 to 10 GB) but there is enough disk space
  (80 GB) and memory available.

  Weird is that the core dump sometimes works and sometimes does not.
  Maybe relevant is that the system is under heavy load over all.

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