Bug 983296 – rgmanager segfault while starting service

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Bug 983296 - rgmanager segfault while starting service

Summary:	rgmanager segfault while starting service

Status:	CLOSED ERRATA

Aliases:	None

Product:	Red Hat Enterprise Linux 6
Classification:	Red Hat
Component:	rgmanager (Show other bugs)
Sub Component:
Version:	6.2
Hardware:	x86_64 Linux

Priority	high Severity high
Target Milestone:	rc
Target Release:	---
Assigned To:	Ryan McCabe
QA Contact:	Cluster QE
Docs Contact:

URL:
Whiteboard:
Keywords:	OtherQA

Depends On:
Blocks:
	Show dependency tree / graph

Reported:	2013-07-10 18:13 EDT by Chester Knapp
Modified:	2014-07-21 00:26 EDT (History)
CC List:	7 users (show)

See Also:
Fixed In Version:	rgmanager-3.0.12.1-18.el6
Doc Type:	Bug Fix
Doc Text:	* Previously, attempts to start an MRG Messaging (MRG-M) broker caused rgmanager to terminate unexpectedly with a segmentation fault. This was caused by subtle memory corruption introduced by calling pthread_mutex_unlock() on a mutual exclusion that was not locked. This update adresses scenarios where memory could be corrupted when calling pthread_mutex_unlock(), and crashes no longer occur in the described scenario.
Story Points:	---
Clone Of:
Environment:
Last Closed:	2013-11-21 05:56:10 EST
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)
abrt output (5.32 MB, application/gzip) 2013-07-16 09:57 EDT, Chester Knapp	no flags	Details
another abrt core dump (5.32 MB, application/gzip) 2013-07-16 09:58 EDT, Chester Knapp	no flags	Details
Add an attachment (proposed patch, testcase, etc.)

External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
Red Hat Product Errata	RHBA-2013:1600	normal	SHIPPED_LIVE	rgmanager bug fix update	2013-11-20 16:39:20 EST

Groups: None (edit)

Description Chester Knapp 2013-07-10 18:13:56 EDT

Created attachment 771875 [details]
abrt output (core dump)

Description of problem: rgmanager dumps core while starting up an HA MRG-M broker


Version-Release number of selected component (if applicable):
rgmanager-3.0.12.1-17.el6.x86_64

How reproducible:
Only once, so far


Steps to Reproduce:
1. Attempt to start MRG broker (e.g.  /usr/sbin/clusvcadm -e BR.0 -m hostname)
2.
3.

Actual results:
rgmanager crashes

Expected results:
rgmanager starts services normally

Additional info:
uname -a: 
Linux omhq1adf 2.6.32-220.7.1.el6.x86_64 #1 SMP Fri Feb 10 15:22:22 EST 2012 x86_64 x86_64 x86_64 GNU/Linux

Comment 2 Ryan McCabe 2013-07-12 15:50:31 EDT

Hopefully this is fixed by cluster.git commit 156a32063baa99fefdb445c68111b174dc06753e

Comment 3 Chester Knapp 2013-07-16 09:57:33 EDT

Created attachment 774266 [details]
abrt output

Comment 4 Chester Knapp 2013-07-16 09:58:52 EDT

Created attachment 774281 [details]
another abrt core dump

I've added two additional core dumps after seeing this behavior repeated. Consider upping the frequency of the defect.

Comment 5 Ryan McCabe 2013-07-16 11:21:20 EDT

Are you able to try a test package with a proposed fix?

Comment 6 Chester Knapp 2013-07-16 12:43:44 EDT

I'll contact the customer to determine if this is feasible. Although, I don't have a reliable reproducer either way. rgmanager has cored 5 times out of several hundred over the last week, so it is still intermittent at best.

Comment 7 Chester Knapp 2013-07-16 12:44:54 EDT

(In reply to Ryan McCabe from comment #5)
> Are you able to try a test package with a proposed fix?

Yes, the customer is agreeable. We'll try out the test package you provide.

Comment 8 Ryan McCabe 2013-07-17 11:22:34 EDT

(In reply to Chester Knapp from comment #7)
> (In reply to Ryan McCabe from comment #5)
> > Are you able to try a test package with a proposed fix?
> 
> Yes, the customer is agreeable. We'll try out the test package you provide.

You can grab the build from https://brewweb.devel.redhat.com/buildinfo?buildID=282334

Let me know how it goes.


Thanks for testing!

Comment 11 Chester Knapp 2013-08-27 11:15:16 EDT

Customer opted not to use the test package.

Comment 16 errata-xmlrpc 2013-11-21 05:56:10 EST

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.

http://rhn.redhat.com/errata/RHBA-2013-1600.html

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