Bug 490098

Summary:	IPC race condition allows multiple ipc threads within service engine at same time
Product:	Red Hat Enterprise Linux 5	Reporter:	Steven Dake <sdake>
Component:	openais	Assignee:	Steven Dake <sdake>
Status:	CLOSED ERRATA	QA Contact:	Cluster QE <mspqa-list>
Severity:	urgent	Docs Contact:
Priority:	urgent
Version:	5.4	CC:	cluster-maint, djansa, edamato, sghosh
Target Milestone:	rc	Keywords:	ZStream
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2009-09-02 11:29:35 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	491391

Description Steven Dake 2009-03-13 09:15:50 UTC

Description of problem:
The IPC system allows multiple ipc dispatch threads to enter a service engine (cpg) at the same time.  Since service engines are not reentrant, they must be protected from multiple threads of execution.

Results in segfaults.

Version-Release number of selected component (if applicable):
openais-0.80.5-4

How reproducible:
100%

Steps to Reproduce:
1. run aisexec single node.  Modify testckpt to exit(0) after first ckptClose.  Segfault.
2.  other failures have been observed.
3.
  
Actual results:
segfault.

Expected results:
shouldn't segfault.

Additional info:

Comment 1 Steven Dake 2009-03-13 09:16:50 UTC

patch available.

Comment 6 errata-xmlrpc 2009-09-02 11:29:35 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-2009-1366.html