Bug 423311

Summary:	KVM: Exception 6 before being able to enter Ubuntu CD boot selector
Product:	[Fedora] Fedora	Reporter:	Lubomir Kundrak <lkundrak>
Component:	kvm	Assignee:	Jeremy Katz <katzj>
Status:	CLOSED CANTFIX	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	low	Docs Contact:
Priority:	low
Version:	8	CC:	berrange, hdegoede, jrincayc, petrosyan
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:	2008-01-29 03:35:48 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 Lubomir Kundrak 2007-12-13 12:45:51 UTC

Description of problem:

When I try to boot ubuntu-7.10-desktop-i386.iso with KVM, I get an exception 6
before I am able to enter boot loader's menu. I suspect its graphics mode change
might be to blame.

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

kvm-53-1.fc9

Additional info:

$ qemu-kvm -boot d -cdrom ~/ubuntu/ubuntu-7.10-desktop-i386.iso 
Warning: No DNS servers found
exception 6 (0)
rax 0000000000000469 rbx 0000000000800001 rcx 0000000000004300 rdx 0000000000000000
rsi 000000000005961d rdi 000000000005961c rsp 00000000fffaa9cc rbp 000000000000200c
r8  0000000000000000 r9  0000000000000000 r10 0000000000000000 r11 0000000000000000
r12 0000000000000000 r13 0000000000000000 r14 0000000000000000 r15 0000000000000000
rip 000000000000b04b rflags 00033006
cs 4143 (00041430/0000ffff p 1 dpl 3 db 0 s 1 type 3 l 0 g 0 avl 0)
ds 4004 (00040040/0000ffff p 1 dpl 3 db 0 s 1 type 3 l 0 g 0 avl 0)
es 4004 (00040040/0000ffff p 1 dpl 3 db 0 s 1 type 3 l 0 g 0 avl 0)
ss 0000 (00000000/0000ffff p 1 dpl 3 db 0 s 1 type 3 l 0 g 0 avl 0)
fs 3002 (00030020/0000ffff p 1 dpl 3 db 0 s 1 type 3 l 0 g 0 avl 0)
gs 0000 (00000000/0000ffff p 1 dpl 3 db 0 s 1 type 3 l 0 g 0 avl 0)
tr 0000 (08c00000/00002088 p 1 dpl 0 db 0 s 0 type b l 0 g 0 avl 0)
ldt 0000 (00000000/0000ffff p 1 dpl 0 db 0 s 0 type 2 l 0 g 0 avl 0)
gdt 40920/47
idt 0/ffff
cr0 60000010 cr2 0 cr3 0 cr4 0 cr8 0 efer 0
code: 0f 17 3e 28 08 02 28 3e 01 17 0f 17 46 28 08 02 28 0e 01 17 --> 0f 17 3e
28 08 02 28 5d 01 17 0f 28 08 02 28 5e 01 17 0f 17 3b 28 08 02 28 5f 01 17 0f 28
Aborted (core dumped)
$

I am putting Daniel into CC, as I first treid that with virt-manager, and was
unable to find out why wasn't I able to start the VM. virt-manager should report
such failure and possibly the kvm output in some way to the user and suggest
opening a bugzilla ticket.

Comment 1 Josh Cogliati 2008-01-16 23:33:18 UTC

This may be the same as bug 427858

Comment 2 petrosyan 2008-01-16 23:59:30 UTC

*** Bug 427858 has been marked as a duplicate of this bug. ***

Comment 3 Josh Cogliati 2008-01-23 15:03:49 UTC

As noted in bug 427858 this also occurs with openSUSE-10.3 LiveCD.

Comment 4 Lubomir Kundrak 2008-01-23 17:13:26 UTC

As well as with alpha of openSUSE 11 after being installed.
Jeremy: Would it make sense if we reported it upstream?

Comment 5 Jeremy Katz 2008-01-29 03:35:48 UTC

Already known upstream, but it's actually a bug in gfxboot, not kvm.  It's
trying to use code which cannot work under VT -- see
https://sourceforge.net/tracker/?func=detail&atid=893831&aid=1798813&group_id=180599

Comment 6 Josh Cogliati 2008-01-31 05:45:51 UTC

I check and there are bugs filed in both Ubuntu and OpenSUSE.
Ubuntu:
https://bugs.launchpad.net/ubuntu/+source/gfxboot/+bug/140713
OpenSUSE:
https://bugzilla.novell.com/show_bug.cgi?id=307194