Bug 172079

Summary:	xen kernel panic
Product:	[Fedora] Fedora	Reporter:	Need Real Name <lsof>
Component:	xen	Assignee:	Rik van Riel <riel>
Status:	CLOSED DUPLICATE	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	4	CC:	sct
Target Milestone:	---
Target Release:	---
Hardware:	i386
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2006-01-18 18:09:16 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 Need Real Name 2005-10-30 22:17:07 UTC

From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.12) Gecko/20050923 Epiphany/1.6.5

Description of problem:
Booting Xen gives me the following kernel panic:

(XEN) *****
(XEN) Panic on CPU0:
(XEN) Domain 0 allocation is too small for kernel image.
(XEN) *****
(XEN) 
(XEN) Reboot in five seconds...

Versions:
 kernel-xenU.i686                         2.6.13-1.1532_FC4
 xen.i386                                 3.0-0.20050912.fc4

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


How reproducible:
Always

Steps to Reproduce:
x

Additional info:

Comment 1 Need Real Name 2005-11-15 22:28:17 UTC

This is still broken, and fc5t1 is frozen now.
Please could you tell me what the problem?

Comment 2 Need Real Name 2005-12-01 15:09:10 UTC

Lack of interest. Do you want this closed?

Comment 3 Stephen Tweedie 2006-01-18 18:03:35 UTC

There has been a significant rebasing of the kernel and HV images for fc5t2. 
Can you still reproduce the problem?

If so, then this sounds like a mismatch between the memory calculations in the
HV/bootloader and the kernel.  The full Xen logs would be really useful in
tracking this down; is it possible for you to capture that to a serial console?
 That, in conjunction with the normal non-xen boot logs, should let us examine
the memory maps being computed in both cases to see if there's a mismatch somewhere.

You _may_ be able to work around this by adding the "dom0_mem=...M" option to
the xen hypervisor line ("kernel=xen...") in /etc/grub.conf.  If you assign
(say) only half your physical memory to dom0 on boot, does that work?

Comment 4 Stephen Tweedie 2006-01-18 18:09:16 UTC

There are a number of other reports of this in bug 172406: I'll close this one
as a dup to keep the majority of the reports in one place.  Please followup in
the other bug report.



*** This bug has been marked as a duplicate of 172406 ***