linux-kernel - Re: [BUG] kvm: guest can not startup due to triple fault

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Message-ID: <AANLkTi=5yGPmZxZY7T_oeyJ4xS+RWt7cY4WD=78fbo7v@mail.gmail.com>
Date:	Mon, 18 Oct 2010 12:43:45 +0800
From:	Dave Young <hidave.darkstar@...il.com>
To:	Avi Kivity <avi@...hat.com>
Cc:	kvm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [BUG] kvm: guest can not startup due to triple fault

On Sun, Oct 17, 2010 at 8:15 PM, Avi Kivity <avi@...hat.com> wrote:
>  On 10/17/2010 12:14 PM, Dave Young wrote:
>>
>> On Sun, Oct 17, 2010 at 5:34 PM, Avi Kivity<avi@...hat.com>  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]  [<ffffffffa0176047>] handle_triple_fault+0x11/0x26
>> >>  [kvm_intel]
>> >>  [ 3924.503060]  [<ffffffffa01772d2>] vmx_handle_exit+0x3df/0x474
>> >>  [kvm_intel]
>> >>  [ 3924.503080]  [<ffffffffa021f203>]
>> >> kvm_arch_vcpu_ioctl_run+0x95f/0xc43
>> >>  [kvm]
>> >>  [ 3924.503087]  [<ffffffff81503e54>] ?
>> >> __mutex_unlock_slowpath+0x11c/0x131
>> >>  [ 3924.503101]  [<ffffffffa021e1f9>] ? kvm_arch_vcpu_load+0x90/0xe6
>> >> [kvm]
>> >>  [ 3924.503112]  [<ffffffffa0210faf>] kvm_vcpu_ioctl+0x109/0x54a [kvm]
>> >>  [ 3924.503117]  [<ffffffff810bee76>] ?
>> >>  fire_user_return_notifiers+0x2c/0x36
>> >>  [ 3924.503122]  [<ffffffff8106be93>] ? trace_hardirqs_on+0xd/0xf
>> >>  [ 3924.503127]  [<ffffffff81002789>] ? do_notify_resume+0x717/0x73d
>> >>  [ 3924.503131]  [<ffffffff8103994e>] ? finish_task_switch+0x69/0xda
>> >>  [ 3924.503135]  [<ffffffff8110628c>] do_vfs_ioctl+0x4c3/0x50d
>> >>  [ 3924.503139]  [<ffffffff8110632b>] sys_ioctl+0x55/0x77
>> >>  [ 3924.503142]  [<ffffffff81002c02>] system_call_fastpath+0x16/0x1b
>> >>
>> >>  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 it.

Hi, the trace-cmd was build from git version, but without udis86.

I updated trace.dat on the same url, is it a correct one?

>
> --
> error compiling committee.c: too many arguments to function
>
>



-- 
Regards
dave
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