Bug 638868 – race in aio_complete() leads to process hang [rhel-5.3.z]

Bugzilla will be upgraded to version 5.0. The upgrade date is tentatively scheduled for 2 December 2018, pending final testing and feedback.

Bug 638868 - race in aio_complete() leads to process hang [rhel-5.3.z]

Summary:	race in aio_complete() leads to process hang [rhel-5.3.z]

Status:	CLOSED ERRATA

Aliases:	None

Product:	Red Hat Enterprise Linux 5
Classification:	Red Hat
Component:	kernel (Show other bugs)
Sub Component:
Version:	5.4
Hardware:	All Linux

Priority	urgent Severity urgent
Target Milestone:	rc
Target Release:	---
Assigned To:	Jiri Pirko
QA Contact:	Red Hat Kernel QE team
Docs Contact:

URL:
Whiteboard:
Keywords:	ZStream

Depends On:	475814
Blocks:
	Show dependency tree / graph

Reported:	2010-09-30 03:47 EDT by RHEL Product and Program Management
Modified:	2015-05-04 21:21 EDT (History)
CC List:	11 users (show)

See Also:
Fixed In Version:
Doc Type:	Bug Fix
Doc Text:
Story Points:	---
Clone Of:
Environment:
Last Closed:	2010-11-16 14:09:07 EST
Type:	---
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

Attachments	(Terms of Use)
Add an attachment (proposed patch, testcase, etc.)

External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
Red Hat Product Errata	RHSA-2010:0893	normal	SHIPPED_LIVE	Important: kernel security and bug fix update	2010-11-16 14:08:47 EST

Groups: None (edit)

Description RHEL Product and Program Management 2010-09-30 03:47:17 EDT

This bug has been copied from bug #475814 and has been proposed
to be backported to 5.3 z-stream (EUS).

Comment 5 Jiri Pirko 2010-10-25 12:01:01 EDT

in kernel 2.6.18-128.26.1.el5

linux-2.6-fs-aio-race-in-aio_complete-leads-to-process-hang.patch

Comment 7 Petr Beňas 2010-11-09 06:00:47 EST

The reproducer remains unknown.
According http://lkml.org/lkml/2008/3/12/207 the bug was reproduced on eight Xeon machine. I've tested heavy aio multithreaded reads with aio-stress on machine with eight Xeons. I've never triggered the hang on unpatched -128.25.1.el5 nor patched -128.26.1.el5.

Comment 8 Petr Beňas 2010-11-09 06:19:19 EST

code review.
Verified the patch is actually being applied in 2.6.18-128.26.el5 source.

Comment 10 errata-xmlrpc 2010-11-16 14:09:07 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 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-2010-0893.html

Note You need to log in before you can comment on or make changes to this bug.