From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Ahern Subject: Re: hang on reboot with 3.6-rc1 Date: Thu, 09 Aug 2012 12:17:01 -0600 Message-ID: <5023FE9D.40803@gmail.com> References: <5022935A.4010800@gmail.com> <502385EC.2030707@redhat.com> <5023EF20.7040308@gmail.com> <1344533203.3441.203.camel@ul30vt.home> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Cc: Avi Kivity , KVM To: Alex Williamson Return-path: Received: from mail-pb0-f46.google.com ([209.85.160.46]:42856 "EHLO mail-pb0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757557Ab2HISRE (ORCPT ); Thu, 9 Aug 2012 14:17:04 -0400 Received: by pbbrr13 with SMTP id rr13so1272718pbb.19 for ; Thu, 09 Aug 2012 11:17:03 -0700 (PDT) In-Reply-To: <1344533203.3441.203.camel@ul30vt.home> Sender: kvm-owner@vger.kernel.org List-ID: On 8/9/12 11:26 AM, Alex Williamson wrote: > On Thu, 2012-08-09 at 11:10 -0600, David Ahern wrote: >> On 8/9/12 3:42 AM, Avi Kivity wrote: >>> On 08/08/2012 07:27 PM, David Ahern wrote: >>>> Not sure if KVM is the culprit, but it is the last line shown on the >>>> console. I have to power cycle the server to reboot. >>> >>> Have you tried rmmoding the kvm modules before reboot? >>> >>> Were any guests running during this? >> >> hmm.... seems to be a side effect of https://lkml.org/lkml/2012/8/3/370. > > Is it fixed with the patches for that? We're operating on a NULL > pointer with that bug on your system, so you probably don't want to be > assuming the system is entirely healthy after you hit it. Thanks, Agreed and yes. Latest Linus tree has the iommu patch. Still need to get the other one in (https://lkml.org/lkml/2012/8/4/141) or whatever alternative is deemed better.