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Bug 198167

Summary:	grep should not crash on big files
Product:	Red Hat Enterprise Linux 4	Reporter:	Russell Coker <russell>
Component:	grep	Assignee:	Tim Waugh <twaugh>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	4.0	CC:	kasal, staubach
Target Milestone:	---
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	RHBA-2007-0281	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2007-05-01 22:43:55 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:	198165
Bug Blocks:	216882

Description Russell Coker 2006-07-10 12:43:28 UTC

Grep buffers entire lines into memory.  When a line is greater than the 
virtual memory capacity of the machine it crashes, in the process it hurts 
performance and gives inaccurate results.

This bug depends on the rawhide bug 198165 (I don't expect a fix to go in to 
RHEL until after it's been tested in rawhide/Fedora).

Comment 1 Peter Staubach 2006-08-18 14:40:34 UTC

I am seeing this bug just doing my normal development work.  It would
be useful for me to get it fixed.

Comment 3 RHEL Program Management 2006-10-16 16:17:08 UTC

This request was evaluated by Red Hat Product Management for inclusion in a Red
Hat Enterprise Linux maintenance release.  Product Management has requested
further review of this request by Red Hat Engineering, for potential
inclusion in a Red Hat Enterprise Linux Update release for currently deployed
products.  This request is not yet committed for inclusion in an Update
release.

Comment 5 Russell Coker 2006-11-21 08:15:48 UTC

As documented in #198165 create a large sparse file and grep it.

Comment 11 Red Hat Bugzilla 2007-05-01 22:43:55 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 the 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-2007-0281.html

Comment 12 Stepan Kasal 2009-01-27 15:57:50 UTC

Note that the fix caused another problem, so it needs to be adapted.
See bug #440258 for details.