Bug 497479

Summary:	Utility join could segfault due to multibyte patch
Product:	Red Hat Enterprise Linux 4	Reporter:	Ondrej Vasik <ovasik>
Component:	coreutils	Assignee:	Ondrej Vasik <ovasik>
Status:	CLOSED ERRATA	QA Contact:	qe-baseos-daemons
Severity:	medium	Docs Contact:
Priority:	low
Version:	4.9	CC:	azelinka, tao
Target Milestone:	rc
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:	The "join" utility, which joins two text files, or a file and standard input, on a line-by-line basis, could experience a segmentation fault when running under a multibyte locale. In addition, multibyte locales could cause "join" to produce unexpected results. With this updated package, these coding errors have been corrected so that "join" completes correctly and successfully when run under a multibyte locale.	Story Points:	---
Clone Of:	497368	Environment:
Last Closed:	2011-02-16 14:10:03 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:	497368, 598425
Bug Blocks:

Description Ondrej Vasik 2009-04-24 06:32:45 UTC

+++ This bug was initially created as a clone of Bug #497368 +++

Description of problem 
As described in http://lists.gnu.org/archive/html/bug-coreutils/2009-04/msg00215.html , RHEL-4/5 and F-9/F-10 join command could segfault due to error in RedHat only i18n patch. Problem was already fixed in Rawhide branch.

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


How reproducible:
always, see link in the mail above for reproducer files

Steps to Reproduce:
1. join s1.txt s2.txt >/dev/null
  
Actual results:
segfault

Expected results:
No segfault, just info about unsorted files.

--- Additional comment from ovasik on 2009-04-23 13:12:32 EDT ---

Created an attachment (id=340969)
Patch to fix segfault in join for multibyte locales

Actually it turned out that the issue was not fixed in rawhide, but the occurance was reduced from 100% to ~10% due to better memory management. Error was caused by checking pointers for exact equality/non equality with limit - which may cause skipping this limit for multibyte locales. Segfault could be easily workarounded by `LC_ALL=C join s1.txt s2.txt` or could be fixed even for multibyte locales by applying attached patch and rebuilding sources.

--- Additional comment from ovasik on 2009-04-23 13:13:14 EDT ---

Fixed in RAWHIDE and built as coreutils-7.2-3.fc12.

Comment 4 Jaromir Hradilek 2010-10-06 23:31:14 UTC

    Technical note added. If any revisions are required, please edit the "Technical Notes" field
    accordingly. All revisions will be proofread by the Engineering Content Services team.
    
    New Contents:
The "join" utility, which joins two text files, or a file and standard input, on a line-by-line basis, could experience a segmentation fault when running under a multibyte locale. In addition, multibyte locales could cause "join" to produce unexpected results. With this updated package, these coding errors have been corrected so that "join" completes correctly and successfully when run under a multibyte locale.

Comment 6 errata-xmlrpc 2011-02-16 14:10:03 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-2011-0230.html