same issue here on Ubuntu server 20.04.5 LTS

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https://bugs.launchpad.net/bugs/1897561

Title:
  libperl.so.5.30.0 causes nginx to segfault

Status in perl package in Ubuntu:
  Confirmed

Bug description:
  [Steps to reproduce]

  1) launch a focal container
  $ lxc launch images:ubuntu/focal focal-1897561
  2) enter the container
  $ lxc shell focal-1897561
  3) install libnginx-mod-http-perl
  # apt-get install -y nginx-core libnginx-mod-http-perl
  4) check nginx journal
  # journalctl -fu nginx &
  5) reload nginx 2-3 times
  # systemctl reload nginx

  Eventually you will see this from the journal:

  Oct 13 17:13:34 focal-1897561 systemd[1]: Reloaded A high performance web 
server and a reverse proxy server.
  Oct 13 17:13:35 focal-1897561 systemd[1]: nginx.service: Main process exited, 
code=dumped, status=11/SEGV
  Oct 13 17:13:35 focal-1897561 systemd[1]: nginx.service: Killing process 588 
(nginx) with signal SIGKILL.
  Oct 13 17:13:35 focal-1897561 systemd[1]: nginx.service: Killing process 589 
(nginx) with signal SIGKILL.
  Oct 13 17:13:35 focal-1897561 systemd[1]: nginx.service: Killing process 588 
(nginx) with signal SIGKILL.
  Oct 13 17:13:35 focal-1897561 systemd[1]: nginx.service: Killing process 589 
(nginx) with signal SIGKILL.
  Oct 13 17:13:35 focal-1897561 systemd[1]: nginx.service: Failed with result 
'core-dump'.

  [Workaround]

  If libnginx-mod-http-perl is not needed, purging it and restarting
  nginx sidesteps the problem.

  [Original bug description]

  Ubuntu 20.04 LTS

  Looks that Perl 5.30 has bug that causes nginx to die, usually occurs
  after "service nginx reload"

  This looks like nginx, but it really is perl issue:
  https://github.com/Perl/perl5/issues/17154

  Fix done in 5.32 (Perl5 commit ffffbf0) and people are asking backport
  to 5.30 to get fix also to nginx.

  Error:
  Sep 28 07:39:43 host kernel: [1340832.811014] nginx[3253005]: segfault at 10 
ip 00007fbf3220d593 sp 00007ffd6bba6260 error 4 in 
libperl.so.5.30.0[7fbf321a5000+166000]

  Symptom: Nginx terminates
  --- 
  ProblemType: Bug
  ApportVersion: 2.20.11-0ubuntu27.9
  Architecture: amd64
  CasperMD5CheckResult: skip
  DistroRelease: Ubuntu 20.04
  Package: perl 5.30.0-9build1
  PackageArchitecture: amd64
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcVersionSignature: Ubuntu 5.4.0-42.46-generic 5.4.44
  Tags:  focal uec-images
  Uname: Linux 5.4.0-42-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: N/A
  _MarkForUpload: True

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