On Wed, 17 Apr 2002, Julian Elischer wrote:

> I got this fault on a production machine..
> The given fault PC was 0xc01499f0 which is the first byte of fxpintr()
> (??)
> even though coredumps were enabled, for some reason none was made.
> > > >
> > > > wss0c left this message in /var/log/messages:
> > > > Apr 17 08:36:55 wss0c /kernel: Fatal trap 21: "FPU bounds check fault
> > > > while in kernel mode

"FPU" means that i386/trap.c has a bogus error message for the non-FPU
bounds check fault.  I think the kernel doesn't use the `bounds' instruction,
so the bug is most likely that a garbage instruction was executed.


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