From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753766Ab0JRHO2 (ORCPT ); Mon, 18 Oct 2010 03:14:28 -0400 Received: from fmmailgate03.web.de ([217.72.192.234]:43663 "EHLO fmmailgate03.web.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753389Ab0JRHO1 (ORCPT ); Mon, 18 Oct 2010 03:14:27 -0400 Message-ID: <4CBBF3C8.9070104@web.de> Date: Mon, 18 Oct 2010 09:14:16 +0200 From: Jan Kiszka User-Agent: Mozilla/5.0 (X11; U; Linux i686 (x86_64); de; rv:1.8.1.12) Gecko/20080226 SUSE/2.0.0.12-1.1 Thunderbird/2.0.0.12 Mnenhy/0.7.5.666 MIME-Version: 1.0 To: Dave Young CC: Avi Kivity , kvm@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [BUG] kvm: guest can not startup due to triple fault References: <20101017085416.GA1758@darkstar> <4CBAC342.1010609@redhat.com> <4CBAE8E2.1060704@redhat.com> In-Reply-To: X-Enigmail-Version: 1.1.2 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="------------enigCE2CA6A11C1F714CC5C67FDE" X-Provags-ID: V01U2FsdGVkX1+B4XruwJjyfH1ayy3GWbrERas7xYz5DlNq9muT 88+iBlhEm76kAr+6O8HFGombzpUaME8Y0D+sj4yvsYuMJx71WH /GQjEFzZg= Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enigCE2CA6A11C1F714CC5C67FDE Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Am 18.10.2010 06:43, Dave Young wrote: > On Sun, Oct 17, 2010 at 8:15 PM, Avi Kivity wrote: >> On 10/17/2010 12:14 PM, Dave Young wrote: >>> >>> On Sun, Oct 17, 2010 at 5:34 PM, Avi Kivity wrote: >>>> On 10/17/2010 10:54 AM, Dave Young wrote: >>>>> >>>>> linux guest can not startup normally, qemu keep rebooting. >>>>> >>>>> host& guest both use linux-2.6.36-rc8+ kernel >>>>> >>>>> Add a dump_stack in x86.c around EXIT_SHUTDOWN code, I got: >>>>> [ 3924.503041] Pid: 1685, comm: qemu-system-x86 Not tainted >>>>> 2.6.36-rc8+ >>>>> #62 >>>>> [ 3924.503045] Call Trace: >>>>> [ 3924.503055] [] handle_triple_fault+0x11/0x26= >>>>> [kvm_intel] >>>>> [ 3924.503060] [] vmx_handle_exit+0x3df/0x474 >>>>> [kvm_intel] >>>>> [ 3924.503080] [] >>>>> kvm_arch_vcpu_ioctl_run+0x95f/0xc43 >>>>> [kvm] >>>>> [ 3924.503087] [] ? >>>>> __mutex_unlock_slowpath+0x11c/0x131 >>>>> [ 3924.503101] [] ? kvm_arch_vcpu_load+0x90/0xe= 6 >>>>> [kvm] >>>>> [ 3924.503112] [] kvm_vcpu_ioctl+0x109/0x54a [k= vm] >>>>> [ 3924.503117] [] ? >>>>> fire_user_return_notifiers+0x2c/0x36 >>>>> [ 3924.503122] [] ? trace_hardirqs_on+0xd/0xf >>>>> [ 3924.503127] [] ? do_notify_resume+0x717/0x73= d >>>>> [ 3924.503131] [] ? finish_task_switch+0x69/0xd= a >>>>> [ 3924.503135] [] do_vfs_ioctl+0x4c3/0x50d >>>>> [ 3924.503139] [] sys_ioctl+0x55/0x77 >>>>> [ 3924.503142] [] system_call_fastpath+0x16/0x1= b >>>>> >>>>> Anyone can help on this? >>>> >>>> Please provide a trace (trace-cmd record -e kvm) leading to the >>>> failure. >>>> >>> >>> Hi, please see: >>> http://userweb.kernel.org/~davey/tmp/trace.dat >>> >> >> Was this done with an old version of trace-cmd? Please use the latest= git. >> Make sure you have udis86 and udis86-devel installed when you build i= t. >=20 > Hi, the trace-cmd was build from git version, but without udis86. >=20 > I updated trace.dat on the same url, is it a correct one? >=20 IIUC, plugin_kvm is only involved in reporting, not recording, so udis86 shouldn't matter. I had a look out of curiosity (just managed to make my trace tools work smoothly), and the data is properly parsed by kernelshark here. There is a strange NMI storm going on right before the triple fault (on some MSR write) hits the fan. Jan >> >> -- >> error compiling committee.c: too many arguments to function >> >> >=20 >=20 >=20 --------------enigCE2CA6A11C1F714CC5C67FDE Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.15 (GNU/Linux) Comment: Using GnuPG with SUSE - http://enigmail.mozdev.org/ iEYEARECAAYFAky789AACgkQitSsb3rl5xRB/wCdEM5ZltTngMCjfT05tXmKE1Dq En8Ani3vaw49Abpo/IIEQx2UVZuOwxEu =P18e -----END PGP SIGNATURE----- --------------enigCE2CA6A11C1F714CC5C67FDE--