From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jeremy Fitzhardinge <jeremy@goop.org>
Subject: Re: latest pv_ops dom0 (2.6.29-rc6) crashes / unhandled
	page fault
Date: Wed, 04 Mar 2009 12:44:09 -0800
Message-ID: <49AEE819.30901@goop.org>
References: <20090302195317.GS15052@edu.joroinen.fi>
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To: =?ISO-8859-1?Q?Pasi_K=E4rkk=E4inen?= <pasik@iki.fi>
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Pasi K=E4rkk=E4inen wrote:
> On Tue, Mar 03, 2009 at 07:41:49PM +0200, Pasi K=E4rkk=E4inen wrote:
>  =20
>>>> =20
>>>>        =20
>>> Yeah, something got broken.  Tracking it down now.
>>>
>>>      =20
>>>> Any ideas what's going on?=20
>>>>
>>>> (XEN) *** Serial input -> DOM0 (type 'CTRL-a' three times to switch =
input=20
>>>> to Xen)
>>>> (XEN) Freed 112kB init memory.
>>>> mapping kernel into physical memory
>>>> (XEN) d0:v0: unhandled page fault (ec=3D0000)
>>>> (XEN) Pagetable walk from bffff000:
>>>> (XEN)  L3[0x002] =3D 000000003d204001 00001204
>>>> (XEN)  L2[0x1ff] =3D 0000000000000000 ffffffff=20
>>>> (XEN) domain_crash_sync called from entry.S (ff1a2c9e)
>>>> (XEN) Domain 0 (vcpu#0) crashed on cpu#0:
>>>> (XEN) ----[ Xen-3.3.1  x86_32p  debug=3Dn  Not tainted ]----
>>>> (XEN) CPU:    0
>>>> (XEN) EIP:    e019:[<c0879716>]
>>>> =20
>>>>        =20
>>> What does this map to in your vmlinux?
>>>
>>>      =20
>
> Just upgraded to latest tree (as of some hours ago), and I still get th=
e
> same crash:
>
> http://pasik.reaktio.net/xen/pv_ops-dom0-debug/pv_ops-dom0-bootlog-16-x=
en331-linux-2.6.29-rc6-crash.txt
>
> (XEN) Freed 112kB init memory.
> mapping kernel into physical memory
> (XEN) d0:v0: unhandled page fault (ec=3D0000)
> (XEN) Pagetable walk from bffff000:
> (XEN)  L3[0x002] =3D 000000003d204001 00001204
> (XEN)  L2[0x1ff] =3D 0000000000000000 ffffffff=20
> (XEN) domain_crash_sync called from entry.S (ff1a2c9e)
> (XEN) Domain 0 (vcpu#0) crashed on cpu#0:
> (XEN) ----[ Xen-3.3.1  x86_32p  debug=3Dn  Not tainted ]----
> (XEN) CPU:    0
> (XEN) EIP:    e019:[<c0877902>]
>
>
> [root@dom0test linux-2.6-xen]# gdb vmlinux
> GNU gdb Fedora (6.8-29.fc10)
> Copyright (C) 2008 Free Software Foundation, Inc.
> License GPLv3+: GNU GPL version 3 or later
> <http://gnu.org/licenses/gpl.html>
> This is free software: you are free to change and redistribute it.
> There is NO WARRANTY, to the extent permitted by law.  Type "show copyi=
ng"
> and "show warranty" for details.
> This GDB was configured as "i386-redhat-linux-gnu"...
> (gdb) x/i 0xc0877902
> 0xc0877902 <xen_map_identity_early+157>:        mov    (%edi,%ebx,8),%e=
dx
>  =20

Yep, working on it at the moment.

    J