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Bug 651584 - GFS2: BUG_ON kernel panic in gfs2_glock_hold on 2.6.18-226
Summary: GFS2: BUG_ON kernel panic in gfs2_glock_hold on 2.6.18-226
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 6
Classification: Red Hat
Component: kernel
Version: 6.1
Hardware: All
OS: Linux
urgent
urgent
Target Milestone: rc
: ---
Assignee: Robert Peterson
QA Contact: Cluster QE
URL:
Whiteboard:
: 688729 (view as bug list)
Depends On: 643165 689943 696535
Blocks:
TreeView+ depends on / blocked
 
Reported: 2010-11-09 20:45 UTC by Steve Whitehouse
Modified: 2012-08-20 19:22 UTC (History)
14 users (show)

Fixed In Version: kernel-2.6.32-130.el6
Doc Type: Bug Fix
Doc Text:
Kernel panic could occur when the gfs2_glock_hold function was called within the gfs2_process_unlinked_inode function. This was due to the fact that gfs2_glock_hold was being called without a reference already held on the inode in question. This update, resolves this problem by changing the order in which it acquires references to match that of the NFS code; thus, kernel panic no longer occurs.
Clone Of: 643165
Environment:
Last Closed: 2011-05-19 12:51:00 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)
Fix which needs to be added to the main patch (384 bytes, patch)
2010-12-16 15:41 UTC, Steve Whitehouse 		no flags Details | Diff
RHEL6 port of the original patch, including the one liner fix (14.41 KB, patch)
2010-12-17 11:38 UTC, Steve Whitehouse 		no flags Details | Diff
modified patch that applies cleanly and compiles (13.97 KB, patch)
2011-02-08 01:16 UTC, Abhijith Das 		no flags Details | Diff
Integrated patch (21.78 KB, patch)
2011-03-29 17:48 UTC, Robert Peterson 		no flags Details | Diff
Show Obsolete (3) View All


Links
System ID Private Priority Status Summary Last Updated
Red Hat Knowledge Base (Solution) 54742 0 None None None 2012-08-20 19:22:45 UTC
Red Hat Product Errata RHSA-2011:0542 0 normal SHIPPED_LIVE Important: Red Hat Enterprise Linux 6.1 kernel security, bug fix and enhancement update 2011-05-19 11:58:07 UTC

Comment 2 Steve Whitehouse 2010-11-09 20:53:06 UTC 
Cloned for RHEL6.
Comment 3 RHEL Program Management 2010-11-09 20:59:37 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 7 Steve Whitehouse 2010-12-16 15:41:55 UTC 
Created attachment 469149 [details]
Fix which needs to be added to the main patch
Comment 8 Steve Whitehouse 2010-12-17 11:38:04 UTC 
Created attachment 469336 [details]
RHEL6 port of the original patch, including the one liner fix

Not tested yet, but here is the RHEL6 port of the rhel5/upstream patch including the one liner bug fix.
Comment 9 Abhijith Das 2011-02-08 01:16:43 UTC 
Created attachment 477543 [details]
modified patch that applies cleanly and compiles
Comment 10 Abhijith Das 2011-02-08 01:18:03 UTC 
http://porkchop.devel.redhat.com/brewroot/packages/kernel/2.6.32/114.el6.gfs2abhi.001/

This is a rhel6 build with the above patch included
Comment 11 Steve Whitehouse 2011-03-11 10:24:02 UTC 
Note that this patch needs to have Bob's fix for bug #656032 merged into it.
Comment 12 Steve Whitehouse 2011-03-24 12:34:46 UTC 
*** Bug 688729 has been marked as a duplicate of this bug. ***
Comment 13 Steve Whitehouse 2011-03-24 12:36:26 UTC 
Might as well just use this one bz, also making a note that we need to add the bug #689943 fix in as well.
Comment 14 Robert Peterson 2011-03-29 17:48:30 UTC 
Created attachment 488510 [details]
Integrated patch

This patch encompasses all the patches for 656032, crosswritten
to the RHEL6 gfs2 code.  This is the one I intend to post to
rhkernel-list.  I've done some basic functionality testing but
it could stand better testing in a clustered environment.  At
this point, I don't have enough rhel6 boxes clustered to test
it.
Comment 16 Aristeu Rozanski 2011-04-07 13:52:13 UTC 
Patch(es) available on kernel-2.6.32-130.el6
Comment 19 Nate Straz 2011-04-26 14:10:45 UTC 
I verified that patches are included but I have not been able to devise a test case which reproduces the original report on RHEL 6.0.
Comment 20 Martin Prpič 2011-05-09 12:13:06 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:
Kernel panic could occur when the gfs2_glock_hold function was called within the gfs2_process_unlinked_inode function. This was due to the fact that gfs2_glock_hold was being called without a reference already held on the inode in question. This update, resolves this problem by changing the order in which it acquires references to match that of the NFS code; thus, kernel panic no longer occurs.
Comment 21 errata-xmlrpc 2011-05-19 12:51:00 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-2011-0542.html
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