Re: 2.6.16 Guest Hangs on Boot

Alec Joseph Rivera
2010-09-16T11:11:27Z

On Thu, 2010-09-16 at 13:02 +0200, Joerg Roedel wrote:
> On Thu, Sep 16, 2010 at 12:27:29PM +0200, Alexander Graf wrote:
> > Alec Joseph Rivera wrote:
> > > Program received signal SIGINT, Interrupt.
> > > 0xc015405f in ?? ()
> > > (gdb) bt
> > > #0 0xc015405f in ?? ()
> > >
> >
> > 0xc015405a <__pte_alloc_kernel+82>: mov (%edi),%eax
> > 0xc015405c <__pte_alloc_kernel+84>: mov 0x4(%edi),%edx
> > 0xc015405f <__pte_alloc_kernel+87>: lock cmpxchg8b (%edi)
> > 0xc0154063 <__pte_alloc_kernel+91>: jne 0xc015405a
> > <__pte_alloc_kernel+82>
>
> This looks like a bug I also have seen recently on 32 bit host-kvm. The
> instruction emulation for 'lock cmpxchg8b' was broken so that the rip
> was not advanced and the guest just iterated over this instruction again
> and again. I thought this was fixed with the latest kvm updates in
> 2.6.36.
>

Will wait for a 2.6.36 kernel then or compile a .36-rc myself on free
time :-)

Thanks, will update the list when either comes.

> Joerg
>

--
---

Follow me:
http://twitter.com/agirivera
Invite as a