Bug 679096 – md: Do not replace request queue lock internally

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Bug 679096 - md: Do not replace request queue lock internally

Summary:	md: Do not replace request queue lock internally

Status:	CLOSED ERRATA

Aliases:	None

Product:	Red Hat Enterprise Linux 6
Classification:	Red Hat
Component:	kernel (Show other bugs)
Sub Component:
Version:	6.1
Hardware:	All Linux

Priority	medium Severity high
Target Milestone:	rc
Target Release:	---
Assigned To:	Vivek Goyal
QA Contact:	Storage QE
Docs Contact:

URL:
Whiteboard:
Keywords:

Duplicates:	679214 (view as bug list)
Depends On:
Blocks:
	Show dependency tree / graph

Reported:	2011-02-21 10:22 EST by Vivek Goyal
Modified:	2011-05-19 08:35 EDT (History)
CC List:	4 users (show)

See Also:
Fixed In Version:	kernel-2.6.32-130.el6
Doc Type:	Bug Fix
Doc Text:
Story Points:	---
Clone Of:
Environment:
Last Closed:	2011-05-19 08:35:54 EDT
Type:	---
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

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External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
Red Hat Product Errata	RHSA-2011:0542	normal	SHIPPED_LIVE	Important: Red Hat Enterprise Linux 6.1 kernel security, bug fix and enhancement update	2011-05-19 07:58:07 EDT

Groups: None (edit)

Description Vivek Goyal 2011-02-21 10:22:09 EST

Description of problem:

md points the request queue lock to one of the spinlocks internally maintained by RAID personalities. During device cleanup, RAID personality might be gone and by the time md calls blk_cleanup_queue(). This might lead to issue with blk throttle code which expects the spin lock to be still around.

The side affect of this could lead to kernel panic.

Backport this fix where queue lock is still valid in blk_cleanup_queue() for md RAID drivers.

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


How reproducible:


Steps to Reproduce:
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Expected results:


Additional info:

Comment 3 RHEL Product and Program Management 2011-03-02 15:43:28 EST

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 4 Aristeu Rozanski 2011-04-07 09:53:00 EDT

Patch(es) available on kernel-2.6.32-130.el6

Comment 7 Jeff Moyer 2011-04-11 14:58:19 EDT

*** Bug 679214 has been marked as a duplicate of this bug. ***

Comment 8 errata-xmlrpc 2011-05-19 08:35:54 EDT

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-2011-0542.html

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