Bug 605265 - kernel bug in cfq merge logic
Summary: kernel bug in cfq merge logic
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 5
Classification: Red Hat
Component: kernel
Version: 5.6
Hardware: All
OS: Linux
low
medium
Target Milestone: rc
: ---
Assignee: Jeff Moyer
QA Contact: Hangbin Liu
URL: https://bugzilla.kernel.org/show_bug....
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2010-06-17 14:26 UTC by Jeff Moyer
Modified: 2011-01-13 21:38 UTC (History)
2 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2011-01-13 21:38:12 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)
reproducer from upstream (4.03 KB, text/html)
2010-07-12 12:26 UTC, Jan Tluka 		no flags Details
View All


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2011:0017 0 normal SHIPPED_LIVE Important: Red Hat Enterprise Linux 5.6 kernel security and bug fix update 2011-01-13 10:37:42 UTC

Description Jeff Moyer 2010-06-17 14:26:52 UTC 
Description of problem:
http://lkml.org/lkml/2010/6/17/152

Version-Release number of selected component (if applicable):
rhel 5.5
Comment 1 RHEL Program Management 2010-06-17 14:40:10 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 2 Jan Tluka 2010-07-12 12:26:01 UTC 
Created attachment 431159 [details]
reproducer from upstream

Attaching reproducer code from upstream. See details on compilation/use in the source.
Comment 5 Jarod Wilson 2010-09-21 21:00:29 UTC 
in kernel-2.6.18-223.el5
You can download this test kernel (or newer) from http://people.redhat.com/jwilson/el5

Detailed testing feedback is always welcomed.
Comment 11 Hangbin Liu 2010-11-30 05:19:34 UTC 
Code reviewed

linux-2.6-block-cfq-no-merges-for-queues-w-no-process-references.patch
is applied in kernel 2.6.18-233.el5 correctly.
Comment 13 errata-xmlrpc 2011-01-13 21:38:12 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/RHSA-2011-0017.html
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