Bug 718232 – [xfs] mis-sized O_DIRECT I/O results in hung task timeouts

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Bug 718232 - [xfs] mis-sized O_DIRECT I/O results in hung task timeouts

Summary:	[xfs] mis-sized O_DIRECT I/O results in hung task timeouts

Status:	CLOSED ERRATA

Aliases:	None

Product:	Red Hat Enterprise Linux 5
Classification:	Red Hat
Component:	kernel (Show other bugs)
Sub Component:
Version:	5.6
Hardware:	x86_64 Linux

Priority	urgent Severity urgent
Target Milestone:	rc
Target Release:	---
Assigned To:	Jeff Moyer
QA Contact:	Petr Beňas
Docs Contact:

URL:
Whiteboard:
Keywords:	ZStream

Depends On:	695827 716991
Blocks:	727590
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Reported:	2011-07-01 10:18 EDT by Jeff Moyer
Modified:	2015-01-04 18:01 EST (History)
CC List:	14 users (show)

See Also:
Fixed In Version:
Doc Type:	Bug Fix
Doc Text:	A problem with the XFS dio error handling was discovered. If a misaligned write I/O operation was issued, XFS would return -EINVAL without unlocking the inode's mutex. This caused any further operations on the inode to become unresponsive. This update adds a missing mutex_unlock operation to the dio error path, solving this issue.
Story Points:	---
Clone Of:	716991
Environment:
Last Closed:	2012-02-20 22:42:48 EST
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-2012:0150	normal	SHIPPED_LIVE	Moderate: Red Hat Enterprise Linux 5.8 kernel update	2012-02-21 02:35:24 EST

Groups: None (edit)

Comment 1 RHEL Product and Program Management 2011-07-01 10:19:49 EDT

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 12 Jarod Wilson 2011-08-23 10:04:55 EDT

Patch(es) available in kernel-2.6.18-282.el5
You can download this test kernel (or newer) from http://people.redhat.com/jwilson/el5
Detailed testing feedback is always welcomed.

Comment 13 Andrei Maslennikov 2011-08-31 12:35:52 EDT

I had an XFS-related issue 00511623 with RedHat which I just closed after trying the test kernel (-283.el5xen) as suggested by Jared. The error I was observing was 100% reproducible with kernel (-274.el5xen). To repeat it just reboot into kernel -274.el5xen, then place /usr/src/redhat into an XFS filesystem and try to rebuild the coreutils-5.97-34 package with "rpmbuild --rebuild coreutils-5.97-34.el5.src.rpm". When the build arrives to the post-compile tests, it would hang on the "shred" test. The same build ends up correctly when /usr/src/redhat is inside ext3. 

This does not happen with "-238.19.1.el5xen" kernel, and the problem was apparently taken care of with XFS-related patches in "-283.el5xen".

Andrei.

Comment 14 Martin Prpič 2011-09-08 10:59:00 EDT

    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:
A problem with the XFS dio error handling was discovered. If a misaligned write I/O operation was issued, XFS would return -EINVAL without unlocking the inode's mutex. This caused any further operations on the inode to become unresponsive. This update adds a missing mutex_unlock operation to the dio error path, solving this issue.

Comment 16 Petr Beňas 2011-10-17 03:36:40 EDT

Reproduced in 2.6.18-275.el5 and verified in 2.6.18-276.el5.

Comment 17 errata-xmlrpc 2012-02-20 22:42:48 EST

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

http://rhn.redhat.com/errata/RHSA-2012-0150.html

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