> > #13 0xc012d9ed in softclock () at ../../../../kern/kern_clock.c:921
> > 921                                     (*func)(arg);
> > (gdb) up
> > #14 0xc012d87b in hardclock (frame=0xc9a9afac)
> >     at ../../../../kern/kern_clock.c:855
> > 855                             softclock();
> > (gdb) up
> > #15 0xc022c493 in clockintr (arg=0xc9a9afac)
> >     at ../../../../arch/i386/isa/clock.c:409
> > 409             hardclock(frame);
> > (gdb) up
> > #16 0xc0100ec4 in Xintr0 ()
> > (gdb) up
> > Initial frame selected; you cannot go up.
> 
> What make you think ntp is involved ? This looks like a bug in the TCP stack
> (maybe a missing spl protection).

Not enough sleep, mostly, and misremembering what was going on with tnp
and the clock routines.