[Qemu-devel] Re: Another SIGFPE in display code, now in cirrus

[Avi Kivity]

On 05/06/2010 11:07 PM, Michael Tokarev wrote:
> There was a bug recently fixed in vnc code.  Apparently
> there's something similar in the cirrus emulation as well.
> Here it triggers _always_ (including old versions of kvm)
> when running windows NT and hitting "test" button in its
> display resolution dialog.  Here's what gdb is to say:
>
> Program received signal SIGFPE, Arithmetic exception.
> [Switching to Thread 0xf76cab70 (LWP 580)]
> 0x080c5e45 in cirrus_do_copy (s=0x86134dc, dst=960000, src=0, w=2, h=9)
>     at hw/cirrus_vga.c:687
> 687        sx = (src % ABS(s->cirrus_blt_srcpitch)) / depth;
> (gdb) p depth
> $1 = 2
> (gdb) p s->cirrus_blt_srcpitch
> $2 = 0
>
>
> This qemu-kvm-0.12.3 - actually a debian package of it,
> but there's no patches relevant to video applied.
>
> Anything can be done with it?

Well, it's trivial to check for the condition, but how to handle it?

Need to find the spec for the chip.

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