From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tomasz Chmielewski Subject: Re: kernel BUG at arch/x86/kvm/mmu.c:655! Date: Sun, 09 Jan 2011 18:05:50 +0100 Message-ID: <4D29EAEE.306@wpkg.org> References: <4D277B0D.8070505@wpkg.org> <4D29E16E.3080704@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Cc: "kvm@vger.kernel.org" To: Avi Kivity Return-path: Received: from mail.virtall.com ([178.63.195.102]:56068 "EHLO mail.virtall.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751564Ab1AIRF4 (ORCPT ); Sun, 9 Jan 2011 12:05:56 -0500 In-Reply-To: <4D29E16E.3080704@redhat.com> Sender: kvm-owner@vger.kernel.org List-ID: On 09.01.2011 17:25, Avi Kivity wrote: > On 01/07/2011 10:43 PM, Tomasz Chmielewski wrote: >> The following happened when I tried to reboot a virtual machine (host >> running qemu 0.13.0, kernel 2.6.36.2). >> After a while, the server hanged and was no longer reachable. >> >> kvm: 3927: cpu0 unhandled wrmsr: 0x198 data 0 >> kvm: 3927: cpu1 unhandled wrmsr: 0x198 data 0 >> rmap_remove: ffff88060e9437f8 0 1->BUG > > Is this reproducible? Not sure - I can't experiment too much on this server. What I know is that with 2.6.36.x kernel, this server *always* hangs after a few hours/days, whereas with earlier kernels (2.6.35.x and earlier) it runs fine. Can't say if the reason is the same or not. > Was ksm running? No, I don't use ksm. -- Tomasz Chmielewski http://wpkg.org