Re: [Xen-devel] [PATCH] xen: fix hypervisor crash with xentrace

To:	Christoph Egger <Christoph.Egger@xxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject:	Re: [Xen-devel] [PATCH] xen: fix hypervisor crash with xentrace
From:	Keir Fraser <keir.xen@xxxxxxxxx>
Date:	Wed, 06 Apr 2011 15:54:12 +0100
Cc:
Delivery-date:	Wed, 06 Apr 2011 07:55:05 -0700
Dkim-signature:	v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:user-agent:date:subject:from:to:message-id :thread-topic:thread-index:in-reply-to:mime-version:content-type :content-transfer-encoding; bh=GExnvR0F9au3qqjV7pAXKERfN+I30QI7QsYa9sqEcBw=; b=LJsVAS04g7vflxgwfcyCpGo/Q3oYX5SYwo9wHVCcfCBhV0b8fdDBV81VEGGtaABUj6 MIJeFQp60s+TaznL+vVjGBu3RW3Ni5rUASuWC9sliYnKzc0WV2YRNr31Xhe2ufxw6QKG TkDSyuHfTx3t2HrDODE8gQjk/FTX9JF7ihrn8=
Domainkey-signature:	a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=user-agent:date:subject:from:to:message-id:thread-topic :thread-index:in-reply-to:mime-version:content-type :content-transfer-encoding; b=dfYnYZsiMFb53c7lsPZsGr112ga9j9M2WWZ17YGmGNzctOY4NzW7ScK8Nf7ozvybW/ 7qCyk9463uKADw0UBZBbCZsd8mtucYyuM5EfyAqQYYt586d7FzjqCsHI61iLayKSmtGs VQK0LXLdlkGscbLJuUsw2nu2VQ/N5htR3OFn8=
Envelope-to:	www-data@xxxxxxxxxxxxxxxxxxx
In-reply-to:	<201104061632.02099.Christoph.Egger@xxxxxxx>
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>
Sender:	xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
Thread-index:	Acv0an2I2wFuxWDVY0G4J5Ncj4O7Ag==
Thread-topic:	[Xen-devel] [PATCH] xen: fix hypervisor crash with xentrace
User-agent:	Microsoft-Entourage/12.28.0.101117

On 06/04/2011 15:32, "Christoph Egger" <Christoph.Egger@xxxxxxx> wrote:

> 
> Hi,
> 
> Attached patch fixes hypervisor crashes when xentrace buffer gets initialized.

Should be fixed by c/s 23173. Thanks!

 -- Keir

> The xen backtraces I have seen are:
> 
> (XEN) Xen call trace:
> (XEN)    [<ffff82c48025cf70>] early_stack+0x0/0x48
> (XEN)    [<ffff82c4801278d0>] tb_control+0x182/0x278
> (XEN)    [<ffff82c480124aac>] do_sysctl+0x1fc/0xa40
> (XEN)    [<ffff82c480213248>] syscall_enter+0xc8/0x122
> (XEN)
> (XEN) Pagetable walk from ffff82c48025cf70:
> (XEN)  L4[0x105] = 00000000cfcaa027 5555555555555555
> (XEN)  L3[0x112] = 00000000cfcab027 5555555555555555
> (XEN)  L2[0x001] = 000000022f27b063 5555555555555555
> (XEN)  L1[0x05c] = 00000000cfc5c262 5555555555555555
> (XEN)
> (XEN) ****************************************
> (XEN) Panic on CPU 0:
> (XEN) FATAL PAGE FAULT
> (XEN) [error_code=0010]
> (XEN) Faulting linear address: ffff82c48025cf70
> (XEN) ****************************************
> 
> 
> (XEN) Xen call trace:
> (XEN)    [<ffff82c48025d852>] notifier_chain_register+0x0/0x35
> (XEN)    [<ffff82c4801275b2>] alloc_trace_bufs+0x5cd/0x7a9
> (XEN)    [<ffff82c480127910>] tb_control+0x182/0x278
> (XEN)    [<ffff82c480124aec>] do_sysctl+0x1fc/0xa40
> (XEN)    [<ffff82c480213288>] syscall_enter+0xc8/0x122
> (XEN)
> (XEN) Pagetable walk from ffff82c48025d852:
> (XEN)  L4[0x105] = 00000000cfcaa027 5555555555555555
> (XEN)  L3[0x112] = 00000000cfcab027 5555555555555555
> (XEN)  L2[0x001] = 000000022f27b063 5555555555555555
> (XEN)  L1[0x05d] = 00000000cfc5d262 5555555555555555
> (XEN)
> (XEN) ****************************************
> (XEN) Panic on CPU 1:
> (XEN) FATAL PAGE FAULT
> (XEN) [error_code=0010]
> (XEN) Faulting linear address: ffff82c48025d852
> (XEN) ****************************************
> 
> 
> Signed-off-by: Christoph Egger <Christoph.Egger@xxxxxxx>
> 



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

WARNING - OLD ARCHIVES

xen-devel

Re: [Xen-devel] [PATCH] xen: fix hypervisor crash with xentrace