Bug 280411

Summary:	Need to fix modprobe to default to operating in non-blocking mode
Product:	Red Hat Enterprise Linux 5	Reporter:	Neil Horman <nhorman>
Component:	module-init-tools	Assignee:	Jon Masters <jcm>
Status:	CLOSED ERRATA	QA Contact:
Severity:	low	Docs Contact:
Priority:	medium
Version:	5.0	CC:	dkovalsk, mgahagan
Target Milestone:	---
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:
Clones:	583989 (view as bug list)		Environment:
Last Closed:	2009-01-20 20:54:05 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	583989

Description Neil Horman 2007-09-06 13:32:15 UTC

Description of problem:
modprobe differs from rmmod currently in that, by default, it operates in
blocking mode.  This can lead to deadlock, since modprobe holds fcntl locks on
modules its removing, and can wind up blocking in the kernel, waiting on modules
requesting that the same module be added.  See:
http://www.ussg.iu.edu/hypermail/linux/kernel/0709.0/0890.html
For details.


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


How reproducible:


Steps to Reproduce:
see http://www.ussg.iu.edu/hypermail/linux/kernel/0709.0/0890.html
  

Additional info:
This patch in conjunction with the other posted kernel patch will solve the issue:
http://www.ussg.iu.edu/hypermail/linux/kernel/0709.0/0897.html

Comment 1 RHEL Program Management 2008-07-21 23:09:30 UTC

This request was evaluated by Red Hat Product Management for
inclusion, but this component is not scheduled to be updated in
the current Red Hat Enterprise Linux release. If you would like
this request to be reviewed for the next minor release, ask your
support representative to set the next rhel-x.y flag to "?".

Comment 3 RHEL Program Management 2008-07-28 19:52:44 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 4 Jon Masters 2008-09-18 00:00:58 UTC

In module-init-tools-3_3-0_pre3_1_38_el5

Comment 9 errata-xmlrpc 2009-01-20 20:54:05 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/RHBA-2009-0093.html