Bug 439921

Summary: align per-cpu section to configured cache bytes
Product: Red Hat Enterprise Linux 4 Reporter: Greg Marsden <greg.marsden>
Component: kernelAssignee: Michal Schmidt <mschmidt>
Status: CLOSED ERRATA QA Contact: Martin Jenner <mjenner>
Severity: high Docs Contact:
Priority: high    
Version: 4.6CC: riek
Target Milestone: rc   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
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Clone Of: Environment:
Last Closed: 2009-05-18 19:21:53 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: 461297    
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Description Flags
Align the start of the per-cpu section
none
a simple testcase none

Description Greg Marsden 2008-03-31 23:42:21 UTC 
Description of problem:
kernel's per_cpu() API makes RDS trigger a BUG_ON() on module insertion.

The patches are:

   http://lkml.org/lkml/2006/1/27/256
   http://lkml.org/lkml/2006/1/27/255

The above fixes are made into mainline, however not in pre-2.6.16 distros per
Zach.
Comment 1 Greg Marsden 2008-03-31 23:42:21 UTC 
Created attachment 299792 [details]
Align the start of the per-cpu section
Comment 2 RHEL Program Management 2008-04-07 14:59:28 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 3 Michal Schmidt 2008-05-22 10:02:31 UTC 
Created attachment 306356 [details]
a simple testcase

I can reproduce the crash with this trivial kernel module. The proposed patch
fixes it. I've only tested i386 so far.
Comment 4 Michal Schmidt 2008-05-26 15:14:54 UTC 
Tested successfully on x86_64 too.
Comment 6 RHEL Program Management 2008-09-03 13:03:49 UTC 
Updating PM score.
Comment 7 Vivek Goyal 2008-09-12 19:57:59 UTC 
Committed in 78.9.EL . RPMS are available at http://people.redhat.com/vgoyal/rhel4/
Comment 11 errata-xmlrpc 2009-05-18 19:21:53 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-2009-1024.html