Bug 755731

Summary:	Kernel panic, hard lockup on cpu when on heavy load
Product:	[openSUSE] openSUSE 12.1	Reporter:	Arvydas Dapkunas <arvydas.dapkunas>
Component:	Kernel	Assignee:	Thomas Renninger <trenn>
Status:	RESOLVED DUPLICATE	QA Contact:	E-mail List <qa-bugs>
Severity:	Critical
Priority:	P5 - None	CC:	fedev, gudlaugu, jeffm
Version:	Final
Target Milestone:	---
Hardware:	x86-64
OS:	SUSE Other
Whiteboard:
Found By:	---	Services Priority:
Business Priority:		Blocker:	---
Marketing QA Status:	---	IT Deployment:	---
Bug Depends on:	742088
Bug Blocks:

Description Arvydas Dapkunas 2012-04-04 17:30:12 UTC

I get hard lockup on cpu when cpu is on high load
Outputsof two lockups
http://db.tt/UJhEUG0p
http://db.tt/jJx0MRlM



+++ This bug was initially created as a clone of Bug #742088 +++

User-Agent:       Mozilla/5.0 (X11; Linux x86_64; rv:9.0.1) Gecko/20100101 Firefox/9.0.1

When a thermal event occurs (when the cpus are under load for some time) I get a kernel panic - not syncing with the message Watchdog detected hard lockup on cpu x where x has been 2 4 and 16.  I can reproduce this every time the system is under load and it always results in a trace to intel_thermal.

My system has 2 intel xeon 5670 processors.

Reproducible: Always

Steps to Reproduce:
1.Run a computer intensive process until the cpu fans increase their speed and the cpus reduce their speed

Comment 1 Federico Vecchiarelli 2012-05-13 01:38:23 UTC

Seems to be related to bug #742088

Comment 2 Thomas Renninger 2012-05-24 13:26:40 UTC

I close this one as a duplicate. Having critical bugs pending around is not a good idea.
Please reopen if it should not be a duplicate.
BTW, these pastes:
http://db.tt/UJhEUG0p
http://db.tt/jJx0MRlM
are out of date and not reachable anymore. Please attach important information to the bug directly. Something showing the oops/hang (a photograph if you do not have a serial console) could be helpful.

*** This bug has been marked as a duplicate of bug 742088 ***