Bug #118094 for PAR-Packer: Race condition exists when building cache for pp built executables

Mon Sep 26 16:31:25 2016 mrose [...] sjm.com - Ticket created

Subject:

Race condition exists when building cache for pp built executables

Perl version: 5.16.3 OS: RHEL 7.2 I receive errors similar to the following when running pp built executables. Data/Dumper.pm did not return a true value at /usr/share/perl5/site_perl/CUSTOMMODULEA.pm line 23. IO/Socket.pm did not return a true value at /usr/share/perl5/site_perl/CUSTOMMODULEB.pm line 63. These errors only seem to occur when: 1. multiple instances of the executable is started simultaneously; the more instances started the more likely the problem is to occur. 2. The par cache for the executable has not been built yet (e.g. the executable has never been run or rm -rf /tmp/par-UNIQUEID) PP Version: PAR Packager, version 1.017 (PAR version 1.010) [also tried PAR Packager, version 1.032-2] PP Command: pp -c -f Bleach -F Bleach -o target src.pl Note: I think the same problem would occur even if the script and modules weren't being "bleached".

Fri Dec 30 05:53:05 2016 RSCHUPP [...] cpan.org - Correspondence added

On 2016-09-26 16:31:25, mrose@sjm.com wrote: Show quoted text

> These errors only seem to occur when: > 1. multiple instances of the executable is started simultaneously; the > more instances started the more likely the problem is to occur.

Yeah, during bootstrap (and later) files are extracted from the executable and written to the cache area without any precaution that several concurrently running processes might do the same. Fixed in versions PAR 1.014 and PAR::Packer 1.036, just uploaded to CPAN. Cheers, Roderich

Fri Dec 30 05:53:05 2016 The RT System itself - Status changed from 'new' to 'open'

Fri Dec 30 05:53:16 2016 RSCHUPP [...] cpan.org - Status changed from 'open' to 'resolved'

Fri Dec 30 05:53:16 2016 RSCHUPP [...] cpan.org - Fixed in 1.035_002 added