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To: ROBIN@ptnsct.nis.za (Robin Hunt)
cc: bugs@FreeBSD.org
Subject: Re: NPX problem on 486? 
In-reply-to: Your message of "Fri, 31 Mar 95 11:51:18 +0200."
             <950331115118.28d44@ptnsct.nis.za> 
From: David Greenman <davidg@Root.COM>
Reply-To: davidg@Root.COM
Date: Fri, 31 Mar 1995 03:13:30 -0800
Sender: bugs-owner@FreeBSD.org
Precedence: bulk

>npx0 on motherboard
>npx0 INT 16 interface
>
>then it panics with the following error:
>
>Fatal trap 18: integer divide fault while in kernel mode
>Instruction Pointer: 0x8:0xf016e9f8 (see end for kernel listing of this addr)
...
>f016e948 T _bounds_check_with_label   <--- Somewhere around here...
>f016ea20 T _disk_externalize

   The bounds_check_with_label routine is on its way out and should be gone in
the next snapshot (in 1-2 weeks). Something isn't quite right with your disk
label/drive parameters as sensed by the kernel...and is dividing by zero at:

        bp->b_cylin = bp->b_pblkno / lp->d_secpercyl;


...in the routine.

-DG