WARNING - OLD ARCHIVES

This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
   
 
 
Xen 
 
Home Products Support Community News
 
   
 

xen-devel

[Xen-devel] Re: Fedora 11 PV Xen domU (2.6.29.4-167.fc11.x86_64) crash w

To: Pasi Kärkkäinen <pasik@xxxxxx>
Subject: [Xen-devel] Re: Fedora 11 PV Xen domU (2.6.29.4-167.fc11.x86_64) crash with invalid opcode in xsave_cntxt_init (xsetbv)
From: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
Date: Mon, 21 Sep 2009 13:29:21 -0700
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx, fedora-xen@xxxxxxxxxx
Delivery-date: Mon, 21 Sep 2009 13:30:16 -0700
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
In-reply-to: <20090921195750.GQ31123@xxxxxxxxxxx>
List-help: <mailto:xen-devel-request@lists.xensource.com?subject=help>
List-id: Xen developer discussion <xen-devel.lists.xensource.com>
List-post: <mailto:xen-devel@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
References: <20090921195750.GQ31123@xxxxxxxxxxx>
Sender: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
User-agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.1) Gecko/20090814 Fedora/3.0-2.6.b3.fc11 Lightning/1.0pre Thunderbird/3.0b3
On 09/21/09 12:57, Pasi Kärkkäinen wrote:
> Hello Jeremy and others,
>
> I friend of mine is trying to install x86_64 Fedora 11 Xen PV domU on
> CentOS 5.4 x86_64 dom0. He's getting a kernel crash.. so I was wondering
> if you've seen this one before.
>
> A couple of kernel boot/crash logs:
> http://v6.fi/misc/f11_64_kernel.debug2.txt
> http://v6.fi/misc/f11_64_kernel.debug4.txt
>
> (early) Kernel command line:  root=/dex/xvda1 ro earlyprintk=xen
> (early) Initializing CPU#0
> (early) invalid opcode: 0000 [#1] (early) SMP (early)
> (early) last sysfs file:
> (early) CPU 0 (early)
> (early) Modules linked in:(early)
> (early) Pid: 0, comm: swapper Not tainted 2.6.29.4-167.fc11.x86_64 #1
> (early) RIP: e030:[<ffffffff81397963>] (early)  [<ffffffff81397963>] 
> xsave_cntxt_init+0xba/0x199
>   

This looks like the bug where Xen doesn't filter out the xsave feature
flag and the kernel tries to use it, fixed in change ef7616ff29ad. 
Kernel change  e826fe1ba15 works around the Xen bug by doing its own
masking (I think it got into 2.6.30).

There's also a "noxsave" kernel parameter, but that may have been added
after 2.6.29.

    J

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel