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

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Message-ID: <4CBAE8E2.1060704@redhat.com>
Date:	Sun, 17 Oct 2010 14:15:30 +0200
From:	Avi Kivity <avi@...hat.com>
To:	Dave Young <hidave.darkstar@...il.com>
CC:	kvm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [BUG] kvm: guest can not startup due to triple fault

  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.

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

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