In my original report I did say that this really is NOT nginx problem, but Perl problem. Problem is in perl 5.30 and it is 5.32 (Perl5 commit ffffbf0) and people are asking backport to 5.30 to get fix also to nginx.
More in https://github.com/Perl/perl5/issues/17154 My biggest issue is that this bug makes nginx quite unstable in LTS version of Ubuntu, because perl module is active by default. Maybe quick fix to get LTS stabile is to disable perl module by default from nginx- extras (it can delivered in it, but if it commented out from default config). -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to perl in Ubuntu. 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 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/perl/+bug/1897561/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
