From owner-freebsd-hackers  Mon Apr  8 08:37:25 1996
Return-Path: owner-hackers
Received: (from root@localhost)
          by freefall.freebsd.org (8.7.3/8.7.3) id IAA04116
          for hackers-outgoing; Mon, 8 Apr 1996 08:37:25 -0700 (PDT)
Received: from mail.think.com (Mail1.Think.COM [131.239.33.245])
          by freefall.freebsd.org (8.7.3/8.7.3) with SMTP id IAA04095
          for <hackers@FreeBSD.org>; Mon, 8 Apr 1996 08:37:15 -0700 (PDT)
Received: from Early-Bird-1.Think.COM by mail.think.com; Mon, 8 Apr 96 11:36:50 -0400
Received: from compound.think.com ([206.10.99.151]) by Early-Bird.Think.COM; Mon, 8 Apr 96 11:36:47 EDT
Received: (from alk@localhost) by compound.think.com (8.7.5/8.6.112) id KAA10442; Mon, 8 Apr 1996 10:36:53 -0500 (CDT)
Date: Mon, 8 Apr 1996 10:36:53 -0500 (CDT)
Message-Id: <199604081536.KAA10442@compound.think.com>
From: Tony Kimball <alk@Think.COM>
To: dob@nasvr1.cb.att.com
Cc: hackers@FreeBSD.org
In-Reply-To: <9604080114.AA12449@cbsky.cb.att.com> (dob@nasvr1.cb.att.com)
Subject: Re: pgcc and kernels
Sender: owner-hackers@FreeBSD.org
X-Loop: FreeBSD.org
Precedence: bulk

   Date: Sun, 7 Apr 1996 21:14:46 -0400
   From: dob@nasvr1.cb.att.com

   Thanks.  Found it.  Made it (per Jordan's suggestion ala Makefile).  Didn't 
   work.  Panic'ed like before (trace): 

	   _scsi_attachdevs + x20
	   _ncr_attach + x199

Okay, so this is either a bug in the compiler (most likely) or in the
kernel.  Especially in the latter case it would be nice to identify
it.  If you are willing to isolate the problem, I'd suggest starting
with a bisection on the kernel files dragged in by the ncr scsi
device.  Compile half of them with 2.6.3, boot, etc.