Bug 543307 - Lock snapshot while reporting status
Summary: Lock snapshot while reporting status
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 5
Classification: Red Hat
Component: kernel
Version: 5.5
Hardware: All
OS: Linux
low
low
Target Milestone: rc
: ---
Assignee: Mikuláš Patočka
QA Contact: Red Hat Kernel QE team
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2009-12-02 05:21 UTC by Mikuláš Patočka
Modified: 2010-03-30 07:44 UTC (History)
2 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2010-03-30 07:44:58 UTC
Target Upstream Version:
Embargoed:


Attachments (Terms of Use)
a patch (1.00 KB, patch)
2009-12-02 05:21 UTC, Mikuláš Patočka
no flags Details | Diff


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2010:0178 0 normal SHIPPED_LIVE Important: Red Hat Enterprise Linux 5.5 kernel security and bug fix update 2010-03-29 12:18:21 UTC

Description Mikuláš Patočka 2009-12-02 05:21:14 UTC
Created attachment 375330 [details]
a patch

We need to backport 4c6fff445d7aa753957856278d4d93bcad6e2c14 from 2.6.32-rc6.

in snapshot_status(), the counts are being read without holding the lock. So, invalid intermediate values can be reported.

Comment 1 RHEL Program Management 2009-12-02 05:31:40 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 6 Don Zickus 2009-12-11 19:31:45 UTC
in kernel-2.6.18-179.el5
You can download this test kernel from http://people.redhat.com/dzickus/el5

Please update the appropriate value in the Verified field
(cf_verified) to indicate this fix has been successfully
verified. Include a comment with verification details.

Comment 9 Petr Beňas 2010-03-22 12:05:56 UTC
bug state changed from ON_QA to VERIFIED 
Sanity only. 
Patch is actually being applied.

Comment 11 errata-xmlrpc 2010-03-30 07:44:58 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-2010-0178.html


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