Re: Got a WARN_ON for supposedly unreachable code.

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On 02/11/2017 18:56, Nadav Amit wrote:
> Paolo Bonzini <pbonzini@xxxxxxxxxx> wrote:
> 
>> On 02/11/2017 12:27, Ilya Lesokhin wrote:
>>> Hi, 
>>> Just in case anyone is interested, I've hit a WARN_ON that shouldn't happen:
>>> http://elixir.free-electrons.com/linux/v4.13.10/source/arch/x86/kernel/traps.c#L788
>>>
>>> I was single stepping in GDB connected to a QEMU target
>>> and got the trace below inside the VM.
>>>
>>> I'm not sure If it's a kernel bug or a KVM bug and I did try to reproduce or debug it.
>>>
>>> Hypervisor was running 3.10.0-514.21.1.el7.x86_64.
>>> VM was running a modified 4.13.0.
>>
>> It's a KVM bug, though I'm not sure if it's easily fixable.
> 
> What’s wrong with MTF? That’s what I used for debugging the Intel tests.

Nothing, but I haven't checked if you might get the same failure on
AMD---which doesn't have it.

Thanks,

Paolo



[Index of Archives]     [KVM ARM]     [KVM ia64]     [KVM ppc]     [Virtualization Tools]     [Spice Development]     [Libvirt]     [Libvirt Users]     [Linux USB Devel]     [Linux Audio Users]     [Yosemite Questions]     [Linux Kernel]     [Linux SCSI]     [XFree86]

  Powered by Linux