[Bug 1868456] Re: "sudo: setrlimit(RLIMIT_CORE): Operation not permitted" error when using sudo in 20.04 LXD container

[Simon Déziel]

*** This bug is a duplicate of bug 1857036 ***
    https://bugs.launchpad.net/bugs/1857036

** This bug has been marked a duplicate of bug 1857036
   `sudo --login --user USERNAME` throws `setrlimit(RLIMIT_CORE): Operation not permitted` error when run inside a container.

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https://bugs.launchpad.net/bugs/1868456

Title:
  "sudo: setrlimit(RLIMIT_CORE): Operation not permitted" error when
  using sudo in 20.04 LXD container

Status in lxd package in Ubuntu:
  Invalid
Status in sudo package in Ubuntu:
  Confirmed

Bug description:
  I fired up a LXD container using ubuntu-daily:f on my machine and
  every time I issue a comment inside the container using sudo, I get
  this error:

  sudo: setrlimit(RLIMIT_CORE): Operation not permitted

  I did some digging online and found this was reported against Fedora last fall which lead me to this bugzilla report:
  https://bugzilla.redhat.com/show_bug.cgi?id=1773148

  which seems to tie this to a change in sudo between 1.8.28 and 1.8.29.

  Focal has 1.8.31:
  bladernr at focal-builder:~/development/kernels-ubuntu/focal$ apt-cache policy sudo
  sudo:
    Installed: 1.8.31-1ubuntu1
    Candidate: 1.8.31-1ubuntu1
    Version table:
   *** 1.8.31-1ubuntu1 500
          500 http://archive.ubuntu.com/ubuntu focal/main amd64 Packages
          100 /var/lib/dpkg/status

  This is not an issue on Bionic:
  bladernr at galactica:~/development/kernels-upstream/mainline$ apt-cache policy sudo
  sudo:
    Installed: 1.8.21p2-3ubuntu1.2
    Candidate: 1.8.21p2-3ubuntu1.2
    Version table:
   *** 1.8.21p2-3ubuntu1.2 500
          500 http://archive.ubuntu.com/ubuntu bionic-updates/main amd64 Packages
          500 http://security.ubuntu.com/ubuntu bionic-security/main amd64 Packages
          100 /var/lib/dpkg/status
       1.8.21p2-3ubuntu1 500
          500 http://archive.ubuntu.com/ubuntu bionic/main amd64 Packages

  From the redhat bug, the described workaround does clear these
  messages up:

  # set disable_coredump false

  Once I've done that, the error messages go away.

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