Bug 462743 - libata: rmmod pata_sil680 never returns from ata_port_detach
Summary: libata: rmmod pata_sil680 never returns from ata_port_detach
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 5
Classification: Red Hat
Component: kernel
Version: 5.3
Hardware: All
OS: Linux
high
medium
Target Milestone: beta
: ---
Assignee: David Milburn
QA Contact: Martin Jenner
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2008-09-18 17:08 UTC by David Milburn
Modified: 2009-01-20 19:50 UTC (History)
1 user (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2009-01-20 19:50:51 UTC
Target Upstream Version:
Embargoed:


Attachments (Terms of Use)
Patch to fix rmmod hang (609 bytes, patch)
2008-09-18 17:09 UTC, David Milburn
no flags Details | Diff


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2009:0225 0 normal SHIPPED_LIVE Important: Red Hat Enterprise Linux 5.3 kernel security and bug fix update 2009-01-20 16:06:24 UTC

Description David Milburn 2008-09-18 17:08:46 UTC
Description of problem:

When removing sata driver ata_port_detach uses cancel_rearming_delayed_work()
which may spin in cancel_rearming_delayed_workqueue if there is no pending
timer to deactivate.

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

2.6.18-115.el5

How reproducible:

Frequent

Steps to Reproduce:
1. Boot system
2. rmmod pata_sil680
3.
  
Actual results:

Never returns from rmmod

Expected results:

Driver unloads properly


Additional info:

Comment 1 David Milburn 2008-09-18 17:09:48 UTC
Created attachment 317098 [details]
Patch to fix rmmod hang

Comment 2 RHEL Program Management 2008-09-18 17:35:52 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 Don Zickus 2008-10-06 15:56:22 UTC
in kernel-2.6.18-118.el5
You can download this test kernel from http://people.redhat.com/dzickus/el5

Comment 7 errata-xmlrpc 2009-01-20 19:50:51 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-2009-0225.html


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