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    SubjectRe: [BUG] kvm: guest can not startup due to triple fault
    From
    On Sun, Oct 17, 2010 at 8:15 PM, Avi Kivity <avi@redhat.com> wrote:
    >  On 10/17/2010 12:14 PM, Dave Young wrote:
    >>
    >> On Sun, Oct 17, 2010 at 5:34 PM, Avi Kivity<avi@redhat.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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