From owner-freebsd-hackers  Fri Jan 19 02:45:16 1996
Return-Path: owner-hackers
Received: (from root@localhost)
          by freefall.freebsd.org (8.7.3/8.7.3) id CAA06964
          for hackers-outgoing; Fri, 19 Jan 1996 02:45:16 -0800 (PST)
Received: from tfs.com (tfs.com [140.145.250.1])
          by freefall.freebsd.org (8.7.3/8.7.3) with SMTP id CAA06949
          for <freebsd-hackers@FreeBSD.org>; Fri, 19 Jan 1996 02:44:58 -0800 (PST)
Received: from critter.tfs.com by tfs.com (smail3.1.28.1) with SMTP
	id m0tdEJT-0003xNC; Fri, 19 Jan 96 02:44 PST
Received: from localhost.tfs.com (localhost.tfs.com [127.0.0.1]) by critter.tfs.com (8.6.12/8.6.12) with SMTP id LAA01119; Fri, 19 Jan 1996 11:44:51 +0100
X-Authentication-Warning: critter.tfs.com: Host localhost.tfs.com didn't use HELO protocol
To: Bruce Evans <bde@zeta.org.au>
cc: freebsd-hackers@FreeBSD.org, mpp@mpp.minn.net
Subject: Re: kern/subr_diskslice debug messages 
In-reply-to: Your message of "Fri, 19 Jan 1996 21:06:16 +1100."
             <199601191006.VAA32089@godzilla.zeta.org.au> 
Date: Fri, 19 Jan 1996 11:44:48 +0100
Message-ID: <1115.822048288@critter.tfs.com>
From: Poul-Henning Kamp <phk@critter.tfs.com>
Sender: owner-hackers@FreeBSD.org
Precedence: bulk

> >I've noticed that if I shutdown into single user mode and
> >unmount all my disks, and then do something to access my second
> >SCSI hard disk (e.g. fsck it), I will get debug output from 
> >sys/kern/subr_diskslice.c.  These are messages generated by the TRACE 
> >macro defined in that module.  These messages are only printed if ds_debug 
> >is set, which it should not be, and I can't find anything that does
> >set it.  One odd this is that ds_debug is declared as volatile.
> >Anyone else seen this, or have any clue why these messages are coming out?
> 
> It's volatile just to stop gcc deleting it.  Nothing in the kernel should
> set it.  Look for array overruns etc.

Likely to come form the sprintf or thereabout, I'm looking at it... 
--
Poul-Henning Kamp           | phk@FreeBSD.ORG       FreeBSD Core-team.
http://www.freebsd.org/~phk | phk@login.dknet.dk    Private mailbox.
whois: [PHK]                | phk@ref.tfs.com       TRW Financial Systems, Inc.
Future will arrive by its own means, progress not so.