From owner-freebsd-current@FreeBSD.ORG  Fri Apr 24 10:00:10 2009
Return-Path: <owner-freebsd-current@FreeBSD.ORG>
Delivered-To: freebsd-current@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 359F01065678;
	Fri, 24 Apr 2009 10:00:10 +0000 (UTC)
	(envelope-from rwatson@FreeBSD.org)
Received: from cyrus.watson.org (cyrus.watson.org [65.122.17.42])
	by mx1.freebsd.org (Postfix) with ESMTP id E6F7E8FC24;
	Fri, 24 Apr 2009 10:00:09 +0000 (UTC)
	(envelope-from rwatson@FreeBSD.org)
Received: from fledge.watson.org (fledge.watson.org [65.122.17.41])
	by cyrus.watson.org (Postfix) with ESMTPS id 9A5DA46B35;
	Fri, 24 Apr 2009 06:00:09 -0400 (EDT)
Date: Fri, 24 Apr 2009 11:00:09 +0100 (BST)
From: Robert Watson <rwatson@FreeBSD.org>
X-X-Sender: robert@fledge.watson.org
To: Gary Jennejohn <gary.jennejohn@freenet.de>
In-Reply-To: <alpine.BSF.2.00.0904241013560.54334@fledge.watson.org>
Message-ID: <alpine.BSF.2.00.0904241059060.54334@fledge.watson.org>
References: <49F12578.4060609@protected-networks.net>
	<200904241248.16562.doconnor@gsoft.com.au>
	<a31046fc0904232211r3a08647dte616b3ca38cf2c2f@mail.gmail.com>
	<49F16F9E.40306@poildetroll.net>
	<20090424104900.579dfa41@ernst.jennejohn.org>
	<alpine.BSF.2.00.0904241013560.54334@fledge.watson.org>
User-Agent: Alpine 2.00 (BSF 1167 2008-08-23)
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed
Cc: pluknet <pluknet@gmail.com>, Michael Butler <imb@protected-networks.net>,
	Pierre Guinoiseau <geekounet@poildetroll.net>, jhb@FreeBSD.org,
	freebsd-current@freebsd.org
Subject: Re: HEADS UP: rebuild all modules on 8.x (was: Re: 'sysctl -a |
 less' crashes -current)
X-BeenThere: freebsd-current@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Discussions about the use of FreeBSD-current
	<freebsd-current.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>, 
	<mailto:freebsd-current-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-current>
List-Post: <mailto:freebsd-current@freebsd.org>
List-Help: <mailto:freebsd-current-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>,
	<mailto:freebsd-current-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Fri, 24 Apr 2009 10:00:10 -0000

On Fri, 24 Apr 2009, Robert Watson wrote:

> I'll add a note to updating, but am confused about why the safety belts we 
> have in place to force module recompiles in this situation haven't done the 
> trick.  Could we be dealing with straggling modules built before that was 
> added, or modules not built with our standard modules build parts?  I've 
> CC'd John since he did the __FreeBSD_version-related changes, which I may 
> simply have misunderstood.

It looks like the logic for constraining supported versions is more liberal 
than I assumed, so I've added a note to UPDATING.  It is good practice to 
rebuild all modules between kernel updates on -CURRENT.

If anyone can reproduce the malloc-related *after* rebuilding all modules, 
please let me know, it could be an indication of a bug in kern_malloc.c.

Robert N M Watson
Computer Laboratory
University of Cambridge