Bug 236763

Summary:	Inconsistent udev bug when using OpenIB stack on RT kernel
Product:	Red Hat Enterprise MRG	Reporter:	Gurhan Ozen <gozen>
Component:	realtime-kernel	Assignee:	Doug Ledford <dledford>
Status:	CLOSED CURRENTRELEASE	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	1.0	CC:	jburke
Target Milestone:	---
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	-34	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2007-10-02 19:41:34 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:

Description Gurhan Ozen 2007-04-17 15:48:50 UTC

Description of problem:
  So I was trying to test OpenIB on RT kernel using the kernel at:
porkchop.redhat.com/brewroot/packages/kernel-rt/2.6.20/19.el5rt/

  However after installing OpenIB packages, on at least one occasion, I got the
following error:

   Starting udev: BUG: spinlock lockup on CPU#3, softirq-tasklet/48, 
ffff81999999d4c8

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

2.6.20-19.el5rt

How reproducible:
Not reliably:( It happened on both machine last night, but when i reboot them
today, i don't get the same issue. Will keep an eye on it to figure out if there
is a reliable way to reproducing it. 

Steps to Reproduce:
1.  
2.
3.
  
Actual results:


Expected results:


Additional info:

Comment 1 Doug Ledford 2007-07-10 20:51:50 UTC

This should likely be resolved by the updated OFED patch I used in the latest rt
kernel.  The patches have been mailed to Clark Williams for inclusion in his
official rt kernel builds.

Comment 2 Clark Williams 2007-07-26 14:45:39 UTC

applied; testing