linux-kernel - Re: KVM segfaults with 3.5 while installing ubuntu 12.04

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Date:	Sun, 05 Aug 2012 17:52:27 +0200
From:	Stefan Priebe <s.priebe@...fihost.ag>
To:	Avi Kivity <avi@...hat.com>
CC:	mtosatti@...hat.com, kvm@...r.kernel.org,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: KVM segfaults with 3.5 while installing ubuntu 12.04

Am 05.08.2012 12:29, schrieb Avi Kivity:
> On 08/05/2012 01:08 PM, Stefan Priebe wrote:
>> Am 01.08.2012 11:53, schrieb Avi Kivity:
>>> On 08/01/2012 12:42 PM, Stefan Priebe - Profihost AG wrote:
>>>> Am 01.08.2012 11:33, schrieb Avi Kivity:
>>>>>> So here are 3 backtraces from booting the rescue system:
>>>>>> http://pastebin.com/raw.php?i=xCy2pEcP
>>>>>>
>>>>>> To me they all look the same.
>>>>>
>>>>> They are.  What version of qemu are you using?
>>>>
>>>> latest stable-1.1 branch (1.1.1) - which works fine with latest RHEL6
>>>> kernel.
>>>
>>> This could be due to a kernel bug, or due to a different code path taken
>>> in qemu because of differing features exposed to kvm.
>>>
>>> Please try qemu-kvm.git master and report.
>>
>> qemu-kvm.git master just hangs after the 2nd screen with using 100% CPU
>> and doing nothing... so i can't test with qemu-kvm.master
>
> Please provide your command line and I will try to reproduce.

ulimit -c unlimited; /usr/bin/qemu-x86_64 -chardev 
socket,id=qmp,path=/var/run/qemu-server/103.qmp,server,nowait -mon 
chardev=qmp,mode=control -pidfile /var/run/qemu-server/103.pid 
-daemonize -usbdevice tablet -name kvmcrash -smp sockets=1,cores=8 
-nodefaults -boot menu=on -vga cirrus -k de -drive 
file=/dev/VGiSCSItarget0/vm-103-disk-1,if=none,id=drive-virtio0,aio=native,cache=none 
-device 
virtio-blk-pci,drive=drive-virtio0,id=virtio0,bus=pci.0,addr=0xa,bootindex=100 
-drive 
file=/var/lib/vz/template/iso/ubuntu-12.04-server-amd64.iso,if=none,id=drive-ide0,media=cdrom,aio=native 
-device ide-cd,bus=ide.0,unit=0,drive=drive-ide0,id=ide0,bootindex=200 
-m 4096 -netdev 
type=tap,id=net0,ifname=tap103i0,script=/var/lib/qemu-server/pve-bridge,vhost=on 
-device 
virtio-net-pci,mac=BA:5B:86:AD:14:3A,netdev=net0,bus=pci.0,addr=0x12,id=net0,bootindex=300

> Which iso image are you running?
ubuntu-12.04-server-amd64.iso
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