[Qemu-devel] Re: [SeaBIOS] IO APIC emulation failure with qemu-kvm

[Avi Kivity]

On 02/07/2011 12:28 PM, Ravi Kumar Kulkarni wrote:
> On Mon, Feb 7, 2011 at 3:24 PM, Avi Kivity<address@hidden>  wrote:
> >  On 02/07/2011 11:47 AM, Ravi Kumar Kulkarni wrote:
> >>
> >>  >
> >>  >    That is not the same address.  And the code you posted doesn't make any
> >>  >    sense.
> >>  >
> >>    sorry for the mistake. here's the correct one
> >>
> >>
> >>  (qemu) xp /20iw 0x1e2f3f7b
> >>                         0x000000001e2f3f7b:  (bad)
> >>                         0x000000001e2f3f7c:  std
> >>                         0x000000001e2f3f7d:  (bad)
> >>                         0x000000001e2f3f7e:  (bad)
> >
> >  That looks like garbage.  Are you sure you're disassembling the right code?
> >
>    ok  . Just to be clear   i ran the command qemu-kvm once and i found
> got the crash report below which i have attached and in that eip is at
> 0x1e2f3f77
>   and then
>
>   (qemu) xp /20iw 0x1e2f3f77
>                        0x000000001e2f3f77:  pop    %ds
>                        0x000000001e2f3f78:  inc    %edx
>                        0x000000001e2f3f79:  loope  0x1e2f3fc8
>                        0x000000001e2f3f7b:  pop    %ds
>                        0x000000001e2f3f7c:  jnp    0x1e2f3f5e
>                        0x000000001e2f3f7e:  dec    %ebp
>                        0x000000001e2f3f7f:  pop    %ds
>                        0x000000001e2f3f80:  xchg   %eax,%esp
>                        0x000000001e2f3f81:  aas
>                        0x000000001e2f3f82:  das


This still doesn't look like real code.  The problem was likely much 
earlier and caused a branch into a data section.

Someone with a good understanding of your OS needs to examine the trace 
and see what went wrong.

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