[Bug 1107543] New: Perl core-dumps if a hash is tied to SDBM_File before spawning a thread
https://bugzilla.redhat.com/show_bug.cgi?id=1107543
Bug ID: 1107543
Summary: Perl core-dumps if a hash is tied to SDBM_File before
spawning a thread
Product: Fedora
Version: 19
Component: perl
Severity: medium
Assignee: jplesnik(a)redhat.com
Reporter: ppisar(a)redhat.com
QA Contact: extras-qa(a)fedoraproject.org
CC: cweyl(a)alumni.drew.edu, iarnell(a)gmail.com,
jplesnik(a)redhat.com, kasal(a)ucw.cz,
perl-devel(a)lists.fedoraproject.org, ppisar(a)redhat.com,
psabata(a)redhat.com, rc040203(a)freenet.de,
tbowling(a)redhat.com, tcallawa(a)redhat.com
+++ This bug was initially created as a clone of Bug #1107542 +++
+++ This bug was initially created as a clone of Bug #1104827 +++
Description of problem:
Perl script using SDBM_File module is core dumping. Seems to match this
upstream bug: https://rt.perl.org/Public/Bug/Display.html?id=61912#txn-515026
[...]
Steps to Reproduce:
Create reproducer test script sdbm_test.pl containing the following lines, as
described in the upstream bug report:
#!/usr/bin/perl
use strict;
use Fcntl;
use SDBM_File;
use threads;
use threads::shared;
my %dbtest;
tie(%dbtest, 'SDBM_File', "test.db", O_RDWR|O_CREAT, 0666);
for (1 .. 2)
{
my $thr = threads->new(\&testThread, $_);
$thr->detach();
}
sleep 4;
sub testThread
{
my $n = shift;
print "thread #" . $n . " started\n";
}
Make script executable and run which produces the following output:
[root@util6vm ~]# chmod u+x sdbm_test.pl
[root@util6vm ~]# ./sdbm_test.pl
Expected results:
No errors.
Actual results:
thread #1 started
thread #2 started
*** glibc detected *** /usr/bin/perl: double free or corruption (out):
0x0000000000e2c2c0 ***
======= Backtrace: =========
/lib64/libc.so.6[0x3d2ca76166]
/lib64/libc.so.6[0x3d2ca78c93]
/usr/lib64/perl5/auto/SDBM_File/SDBM_File.so(XS_SDBM_File_DESTROY+0xc0)[0x7f9d58fb06f0]
[...]
--- Additional comment from Petr Pisar on 2014-06-05 05:56:58 GMT ---
This happens with any perl, even the development version.
----
All Fedoras are affected.
--
You are receiving this mail because:
You are on the CC list for the bug.
Unsubscribe from this bug
https://bugzilla.redhat.com/token.cgi?t=sO59ARuC6M&a=cc_unsubscribe