Bug 712406 - deadlock in malloc()
Summary: deadlock in malloc()
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 6
Classification: Red Hat
Component: glibc
Version: 6.0
Hardware: x86_64
OS: Linux
urgent
urgent
Target Milestone: rc
: ---
Assignee: Andreas Schwab
QA Contact: qe-baseos-tools-bugs
URL:
Whiteboard:
Depends On: 676591
Blocks:
TreeView+ depends on / blocked
 
Reported: 2011-06-10 13:40 UTC by RHEL Program Management
Modified: 2018-11-27 21:45 UTC (History)
14 users (show)

Fixed In Version: glibc-2.12-1.7.el6_0.8
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2011-08-18 08:49:28 UTC
Target Upstream Version:

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System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2011:1180 0 normal SHIPPED_LIVE glibc bug fix update 2011-08-18 08:49:20 UTC

Description RHEL Program Management 2011-06-10 13:40:07 UTC 
This bug has been copied from bug #676591 and has been proposed
to be backported to 6.0 z-stream (EUS).
Comment 5 Andreas Schwab 2011-07-08 06:32:48 UTC 
You need to link against libgcc_s.
Comment 6 Miroslav Franc 2011-07-08 07:21:02 UTC 
(In reply to comment #5)
> You need to link against libgcc_s.

I was under impression this is for C++ only. That's why g++ links against it by default while gcc doesn't. But 1/ it shouldn't matter and 2/ even with -lgcc_s I'm getting deadlock and the same backtrace.
Comment 7 Andreas Schwab 2011-07-08 10:18:25 UTC 
This is simply undefined behaviour.
Comment 15 Andreas Schwab 2011-07-12 11:52:58 UTC 
A program committing suicide by deliberately overwriting the heap is not a test case.
Comment 16 Andreas Schwab 2011-07-13 08:25:46 UTC 
The current behaviour is deliberate and has served well for the last 20 years without anyone noticing.  There is nothing more to fix.
Comment 20 errata-xmlrpc 2011-08-18 08:49:28 UTC 
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on therefore solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

http://rhn.redhat.com/errata/RHBA-2011-1180.html
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