Bug 1223045 – glob in threads is broken

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Bug 1223045 - glob in threads is broken

Summary:	glob in threads is broken

Status:	CLOSED ERRATA

Aliases:	None

Product:	Red Hat Enterprise Linux 7
Classification:	Red Hat
Component:	perl (Show other bugs)
Sub Component:
Version:	7.1
Hardware:	All All

Priority	medium Severity medium
Target Milestone:	rc
Target Release:	---
Assigned To:	Petr Šabata
QA Contact:	Martin Kyral
Docs Contact:	Lenka Špačková

URL:	https://rt.perl.org/Public/Bug/Displa...
Whiteboard:
Keywords:	Patch

Depends On:
Blocks:	1203710 1313485 1289025 1295829
	Show dependency tree / graph

Reported:	2015-05-19 12:46 EDT by Paulo Andrade
Modified:	2016-11-03 20:15 EDT (History)
CC List:	5 users (show)

See Also:
Fixed In Version:	perl-5.16.3-287.el7
Doc Type:	Release Note
Doc Text:	Perl interpreter no longer crashes when using glob() with a threaded program Previously, when calling the Perl glob() function after spawning a thread, the Perl interpreter terminated unexpectedly with a segmentation fault. An upstream patch has been applied to clone glob() interpreter-wide data, and using Perl glob() with a threaded program now works as expected.
Story Points:	---
Clone Of:
Environment:
Last Closed:	2016-11-03 20:15:43 EDT
Type:	Bug
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

Attachments	(Terms of Use)
File::Glob: Dup glob state in CLONE() (4.55 KB, patch) 2015-09-02 11:43 EDT, Petr Šabata	no flags	Details \| Diff
Add an attachment (proposed patch, testcase, etc.)

External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
Red Hat Product Errata	RHBA-2016:2191	normal	SHIPPED_LIVE	perl bug fix update	2016-11-03 09:19:19 EDT

Groups: None (edit)

Description Paulo Andrade 2015-05-19 12:46:32 EDT

Upstream bug report:
https://rt.perl.org/Public/Bug/Display.html?id=119897

Upstream patch:
http://perl5.git.perl.org/perl.git/commitdiff_plain/facf34e?hp=ce3470dcce263170c48127c11bb2a47ca92f2616

For easier visualization, and cut&paste, reproducer
repeated here:

---8<---
#!/usr/bin/perl
use warnings;
use strict;
use threads;
use threads::shared;
my $nthread = 20;
sub work {
    foreach (1..10000) {
	my @files = <*.supp>;
    }
}
my @threads;
foreach my $i (1..$nthread) {
    push @threads, threads->create(\&work);
}
foreach my $t (@threads) {
    $t->join();
}
---8<---

Comment 3 Petr Šabata 2015-09-02 11:43:33 EDT

Created attachment 1069481 [details]
File::Glob: Dup glob state in CLONE()

Backport of the proposed patch for 5.16.3.

Comment 5 Petr Šabata 2016-03-02 10:04:58 EST

Pushed as perl-5.16.3-287.el7.

Comment 12 errata-xmlrpc 2016-11-03 20:15:43 EDT

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHBA-2016-2191.html

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