Subject: Re: problems with kernel on Q630
To: Jason Thorpe <thorpej@nas.nasa.gov>
From: Matt Ahrens <matt@callnet.com>
List: port-mac68k
Date: 01/11/1997 10:57:12
At 11:31 PM 1/10/97 -0800, you wrote:
>On Sat, 11 Jan 1997 01:45:41 -0500 
> Matt Ahrens <matt@callnet.com> wrote:
>
> > then it touches the disk slightly, and then hangs. if i hit return, it
says:
> > panic: kernel jump to zero
> > Stopped at        _Debugger+0xc:     unlk      a6
>
>This happens when the program counter get set to 0x0.  What's probably
>happened is the kernel attempted to jump though a NULL function pointer.
>The return address should be on the stack... at the db> prompt, type
>"trace"... that should give Scott more info :-)

ok, if i hit cmd-poweron, then 'trace', it says:
_Debugger(c56a6,36d0,14df30,32be,0) + 6
_nmihand(0,ffffffff,0,0,0) + 22
_lev7intr(?)
_mi_switch(0,0,14b2f0,f9001000,2) + 12
_tsleep(ef3a4,4,9a3e6,0) + 176
_scheduler(6c02b00,18cd2,1a2c0,1a990,80020b8a) + 66
_main() + 49e
_main() + 49e

Matthew Ahrens
<mailto:matt@callnet.com>
<http://www.callnet.com/~matt>