From owner-freebsd-current@FreeBSD.ORG  Sun Oct 17 21:58:50 2004
Return-Path: <owner-freebsd-current@FreeBSD.ORG>
Delivered-To: freebsd-current@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP
	id BA27A16A4CE; Sun, 17 Oct 2004 21:58:50 +0000 (GMT)
Received: from fledge.watson.org (fledge.watson.org [204.156.12.50])
	by mx1.FreeBSD.org (Postfix) with ESMTP
	id 6D88C43D1D; Sun, 17 Oct 2004 21:58:50 +0000 (GMT)
	(envelope-from robert@fledge.watson.org)
Received: from fledge.watson.org (localhost [127.0.0.1])
	by fledge.watson.org (8.13.1/8.13.1) with ESMTP id i9HLwhWb034612;
	Sun, 17 Oct 2004 17:58:43 -0400 (EDT)
	(envelope-from robert@fledge.watson.org)
Received: from localhost (robert@localhost)i9HLwhBF034609;
	Sun, 17 Oct 2004 17:58:43 -0400 (EDT)
	(envelope-from robert@fledge.watson.org)
Date: Sun, 17 Oct 2004 17:58:43 -0400 (EDT)
From: Robert Watson <rwatson@freebsd.org>
X-Sender: robert@fledge.watson.org
To: Julian Elischer <julian@elischer.org>
In-Reply-To: <4172E741.7080508@elischer.org>
Message-ID: <Pine.NEB.3.96L.1041017175742.29749D-100000@fledge.watson.org>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
cc: Vlad <marchenko@gmail.com>
cc: scottl@freebsd.org
cc: current@freebsd.org
cc: Marc UBM Bocklet <ubm@u-boot-man.de>
Subject: Re: [BETA7-panic] sodealloc(): so_count 1
X-BeenThere: freebsd-current@freebsd.org
X-Mailman-Version: 2.1.1
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: Sun, 17 Oct 2004 21:58:50 -0000


On Sun, 17 Oct 2004, Julian Elischer wrote:

> I.e., it sounds like a
> > reference count issue due to sockets using a slightly aberrant reference
> > model.  I'll try to come up with a workaround sometime in the next 12-24
> > hours, and hopefully also a proper fix.
> 
> At the risk of sounding like a broken record, if we had a central policy
> on how reference counts were done, and library/include support for doing
> it we would be some distance ahead fo where we are now.. 
> 
> There are too many examples of "aberrant reference model". 

I've actually looked a little at normalizing socket reference counting,
but it uses a moderate number of "Weak" references, including a reference
from the protocol that isn't counted, as well as possible references from
the listen queues.  It is my intent to investigate this more, and possibly
move to a more normal referencing scheme, but not before 5.3.

Robert N M Watson             FreeBSD Core Team, TrustedBSD Projects
robert@fledge.watson.org      Principal Research Scientist, McAfee Research