As reported to upstream <https://rt.perl.org/rt3//Public/Bug/Display.html?id=107216>, POSIX module functions pause() and sigsuspend() do not deliver Perl safe signals just after returning from kernel. This can create race in delivering signals. This is fixed by commit: commit 20120e59a6c5263ac45ce593c462604c5b9d9b09 Author: Leon Timmermans <fawaka> Date: Mon Dec 26 19:06:54 2011 +0200 Signal handlers must run before sigsuspend returns The whole point of sigsuspend and pause is to wait until a signal has arrived, and then return *after* it has been triggered. Currently delayed/"safe" signals prevent that from happening, which might cause race conditions. This patch prevents that (as far as possible) by running the signal handlers ASAP. Perl 5.14.2 and probably older ones are affected.
Created attachment 559634 [details] Upstream fix ported to 5.14.2
Fixed as perl-5.14.2-211.fc17 in F17.
perl-5.14.2-195.fc16 has been submitted as an update for Fedora 16. https://admin.fedoraproject.org/updates/perl-5.14.2-195.fc16
perl-5.12.4-165.fc15 has been submitted as an update for Fedora 15. https://admin.fedoraproject.org/updates/perl-5.12.4-165.fc15
Package perl-5.14.2-195.fc16: * should fix your issue, * was pushed to the Fedora 16 testing repository, * should be available at your local mirror within two days. Update it with: # su -c 'yum update --enablerepo=updates-testing perl-5.14.2-195.fc16' as soon as you are able to. Please go to the following url: https://admin.fedoraproject.org/updates/FEDORA-2012-1429/perl-5.14.2-195.fc16 then log in and leave karma (feedback).
perl-5.12.4-165.fc15 has been pushed to the Fedora 15 stable repository. If problems still persist, please make note of it in this bug report.
perl-5.14.2-195.fc16 has been pushed to the Fedora 16 stable repository. If problems still persist, please make note of it in this bug report.