Public bug reported:

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@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@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.

** Affects: sudo (Ubuntu)
     Importance: Undecided
         Status: New

** Description changed:

  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:
+ 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@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
+   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@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
+   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.

** Package changed: lxd (Ubuntu) => sudo (Ubuntu)

-- 
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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

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