Bug 473276

Summary:	Kernel panic - not syncing: IO-APIC + timer doesn't work!
Product:	Red Hat Enterprise MRG	Reporter:	Eugene Teo (Security Response) <eteo>
Component:	realtime-kernel	Assignee:	Red Hat Real Time Maintenance <rt-maint>
Status:	CLOSED WORKSFORME	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	1.1	CC:	bhu, lgoncalv, williams
Target Milestone:	---
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2010-10-21 14:35:39 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 Eugene Teo (Security Response) 2008-11-27 13:59:20 UTC

Description of problem:
I encountered this problem when I was testing my backported patch for bug 473259. It can be triggered upon rebooting the kvm guest.

Version-Release number of selected component (if applicable):
kernel-rt-2.6.24.7-95.el5.i686.rpm

How reproducible:
Always.

Steps to Reproduce:
1. init 6
  
Actual results:
[root@bah ~]# virsh console 139
[...]
Please stand by while rebooting the system...
md: stopping all md devices.
Restarting system.
..MP-BIOS bug: 8254 timer not connected to IO-APIC
Kernel panic - not syncing: IO-APIC + timer doesn't work!  Boot with apic=debug and send a report.  Then try booting with the 'noapic' option

Expected results:
No kernel panic.

Comment 1 Luis Claudio R. Goncalves 2009-07-07 13:23:53 UTC

Are you able to reproduce this bug:

1) With a newer kernel (say 2.6.24.7-124)?
2) Are you able to reproduce this issue booting the kernel on a real machine (not a VM)?