Public bug reported:
Segmentation fault in Perl_csighandler3 when used XS with threads. Documented
and fixed in https://github.com/Perl/perl5/issues/22487
Ran into the issue using nfsen (https://github.com/phaag/nfsen/issues/51)
Can the fix be backported to the Perl version Ubuntu uses?
1:
$ lsb_release -rd
Description: Ubuntu 26.04.1 LTS
Release: 26.04
2:
$ apt-cache policy perl
perl:
Installed: 5.40.1-7ubuntu0.3
Candidate: 5.40.1-7ubuntu0.3
Version table:
*** 5.40.1-7ubuntu0.3 500
500 http://archive.ubuntu.com/ubuntu resolute-updates/main amd64
Packages
500 http://security.ubuntu.com/ubuntu resolute-security/main amd64
Packages
100 /var/lib/dpkg/status
5.40.1-7build1 500
500 http://archive.ubuntu.com/ubuntu resolute/main amd64 Packages
3: Expect no crash.
4: Crash
ProblemType: Bug
DistroRelease: Ubuntu 26.04
Package: perl 5.40.1-7ubuntu0.3
ProcVersionSignature: Ubuntu 7.0.0-34.34-generic 7.0.14
Uname: Linux 7.0.0-34-generic x86_64
ApportVersion: 2.34.1-0ubuntu0.1
Architecture: amd64
CasperMD5CheckResult: unknown
Date: Mon Sep 28 16:54:19 2026
ProcEnviron:
LANG=en_US.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
TERM=xterm-color
XDG_RUNTIME_DIR=<set>
SourcePackage: perl
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: perl (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug resolute
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https://bugs.launchpad.net/bugs/2168771
Title:
crash in Perl_csighandler3()
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