linux-kernel - Re: [Qemu-devel] reply: reply: qemu crashed when starting vm(kvm) with vnc connect

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Date:	Thu, 18 Apr 2013 11:25:11 +0200
From:	Gerd Hoffmann <kraxel@...hat.com>
To:	Stefan Hajnoczi <stefanha@...il.com>
CC:	"Zhanghaoyu (A)" <haoyu.zhang@...wei.com>,
	"Huangweidong (C)" <weidong.huang@...wei.com>,
	kvm list <kvm@...r.kernel.org>,
	Marcelo Tosatti <mtosatti@...hat.com>,
	Luonengjun <luonengjun@...wei.com>,
	qemu-devel <qemu-devel@...gnu.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Zanghongyong <zanghongyong@...wei.com>,
	Zhanghuanzhong <zhanghuanzhong@...wei.com>,
	corentin.chary@...il.com
Subject: Re: [Qemu-devel] reply: reply: qemu crashed when starting vm(kvm)
 with vnc connect

On 04/11/13 11:29, Stefan Hajnoczi wrote:
> On Mon, Apr 08, 2013 at 12:27:06PM +0000, Zhanghaoyu (A) wrote:
>> On Sun, Apr 07, 2013 at 04:58:07AM +0000, Zhanghaoyu (A) wrote:
>>>>>> I start a kvm VM with vnc(using the zrle protocol) connect, sometimes qemu program crashed during starting period, received signal SIGABRT.
>>>>>> Trying about 20 times, this crash may be reproduced.
>>>>>> I guess the cause memory corruption or double free.
>>>>>
>>>>> Which version of QEMU are you running?
>>>>>
>>>>> Please try qemu.git/master.

Please try again with latest master, might be fixed meanwhile.

If it still happens pleas provide full qemu and vnc client command lines.

>> backtrace from core file is shown as below:
>>
>> Program received signal SIGABRT, Aborted.

>> #8  0x00007f32efd26d07 in vnc_disconnect_finish (vs=0x7f32f0c762d0)
>>     at ui/vnc.c:1050

Do you have a vnc client connected?  Do you close it?

Any errors reported by the vnc client (maybe it disconnects due to an
error in the data stream)?

cheers,
  Gerd


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