From mboxrd@z Thu Jan  1 00:00:00 1970
From: Pasi =?iso-8859-1?Q?K=E4rkk=E4inen?= <pasik@iki.fi>
Subject: Re: latest pv_ops dom0 (2.6.29-rc6) crashes / unhandled
	page fault
Date: Wed, 4 Mar 2009 22:41:04 +0200
Message-ID: <20090304204104.GY15052@edu.joroinen.fi>
References: <20090302195317.GS15052@edu.joroinen.fi>
	<49AC8A2E.9040002@goop.org>
	<20090303174149.GV15052@edu.joroinen.fi>
Mime-Version: 1.0
Content-Type: text/plain; charset=iso-8859-1
Content-Transfer-Encoding: quoted-printable
Return-path: <xen-devel-bounces@lists.xensource.com>
Content-Disposition: inline
In-Reply-To: <20090303174149.GV15052@edu.joroinen.fi>
List-Unsubscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>,
	<mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
List-Post: <mailto:xen-devel@lists.xensource.com>
List-Help: <mailto:xen-devel-request@lists.xensource.com?subject=help>
List-Subscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>,
	<mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
Sender: xen-devel-bounces@lists.xensource.com
Errors-To: xen-devel-bounces@lists.xensource.com
To: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: xen-devel@lists.xensource.com
List-Id: xen-devel@lists.xenproject.org

On Tue, Mar 03, 2009 at 07:41:49PM +0200, Pasi K=E4rkk=E4inen wrote:
> > > =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
>=20

Just upgraded to latest tree (as of some hours ago), and I still get the
same crash:

http://pasik.reaktio.net/xen/pv_ops-dom0-debug/pv_ops-dom0-bootlog-16-xen=
331-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 copying=
"
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),%edx
(gdb)=20

-- Pasi