Comment 11 for bug 1897561

Confirming here we found today dead NGINX hanging on certbot renewals:

Feb 09 15:04:50 focal kernel: Code: 48 89 43 10 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e 41 5f c3 0f 1f 40 00 0f b6 7f 30 48 c1 e8 03 48 29 f8 48 89 c3 74 89 48 8b 02 <4c> 8b 68 10 4d 85 ed 0f 84 28 01 00 00 0f b6 40 30 49 c1 ed 03 49
Feb 09 15:04:50 focal kernel: nginx[937]: segfault at 10 ip 00007fa35cb73593 sp 00007ffcec0a17d0 error 4 in libperl.so.5.30.0[7fa35cb0b000+166000]

Killing off complete and restart helps on the port hogging as @wpcd said.
This feels to drastic so if there's a patch ready let's backport please.

root@focal:~# apt remove libnginx-mod-http-perl
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages were automatically installed and are no longer required:
  libluajit-5.1-2 libluajit-5.1-common libnginx-mod-http-cache-purge libnginx-mod-http-fancyindex
  libnginx-mod-http-headers-more-filter libnginx-mod-http-lua libnginx-mod-http-ndk libnginx-mod-http-uploadprogress
  libnginx-mod-nchan
Use 'apt autoremove' to remove them.
The following packages will be REMOVED:
  libnginx-mod-http-perl

@teward Can we confirm already this one brings remedy or caveats known?

https://github.com/Perl/perl5/issues/17154