Bug 229349 - [GFS2] NFS fix - gfs2_drevalidate panic
[GFS2] NFS fix - gfs2_drevalidate panic
Product: Red Hat Enterprise Linux 5
Classification: Red Hat
Component: kernel (Show other bugs)
All Linux
medium Severity medium
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Assigned To: Wendy Cheng
GFS Bugs
Depends On:
Blocks: 204760
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Reported: 2007-02-20 10:26 EST by Wendy Cheng
Modified: 2007-11-30 17:07 EST (History)
5 users (show)

See Also:
Fixed In Version: RHBA-2007-0959
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2007-11-07 14:40:54 EST
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oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

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Description Wendy Cheng 2007-02-20 10:26:26 EST
Description of problem:
Glock assertion failure found in '07 NFS connectathon. One of the NFSDs was
doing a "readdirplus" procedure call. It passed the logic into gfs2_readdir
where the call obtained its directory inode glock. It then subsequently
tried to construct the filehandle based on the contents of the directory
lising that invoked lookup and comes down to gfs2_drevalidate(). It hit
the assertion failure while trying obtain the inode glock again.

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

How reproducible:
Each time and every time

Steps to Reproduce:
* Run cthon04 test suite
Actual results:
System panic

Expected results:
No panic

Additional info:
Patch had submitted to cluster-devel and has been in Linux tree since
sometime after Feb. 12.
Comment 1 Wendy Cheng 2007-02-23 12:51:19 EST
Patch submitted:

In Steve's git on: 02/06/07.
Comment 2 RHEL Product and Program Management 2007-03-01 16:45:53 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
Comment 3 Kiersten (Kerri) Anderson 2007-03-09 13:41:04 EST
Devel ACK for 5.1 - Would like to get the patch incorporated into an early 5.1
cycle kernel build.
Comment 4 RHEL Product and Program Management 2007-03-09 18:57:51 EST
This request was evaluated by Red Hat Kernel Team for inclusion in a Red
Hat Enterprise Linux maintenance release, and has moved to bugzilla 
status POST.
Comment 5 Don Zickus 2007-04-17 16:01:19 EDT
in 2.6.18-15.el5
Comment 7 Mike Gahagan 2007-09-12 16:10:11 EDT
Confirmed the fix is in, and I hit what looked like this panic with the GA
kernel just by having a nfs exported gfs2 mounted using nfsv3 and trying to do
an ls of the directory. 

nfs3 mounts when the system hosting the gfs2 fs is running the -45 kernel seems
to work fine.
Comment 9 errata-xmlrpc 2007-11-07 14:40:54 EST
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.


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