From owner-freebsd-bugs@FreeBSD.ORG  Sat Jan 17 00:50:33 2009
Return-Path: <owner-freebsd-bugs@FreeBSD.ORG>
Delivered-To: freebsd-bugs@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 17C79106564A;
	Sat, 17 Jan 2009 00:50:33 +0000 (UTC)
	(envelope-from jason.dicioccio@ods.org)
Received: from nf-out-0910.google.com (nf-out-0910.google.com [64.233.182.191])
	by mx1.freebsd.org (Postfix) with ESMTP id 2F5678FC1B;
	Sat, 17 Jan 2009 00:50:31 +0000 (UTC)
	(envelope-from jason.dicioccio@ods.org)
Received: by nf-out-0910.google.com with SMTP id h3so287317nfh.33
	for <multiple recipients>; Fri, 16 Jan 2009 16:50:31 -0800 (PST)
Received: by 10.210.20.17 with SMTP id 17mr3960824ebt.37.1232153430858;
	Fri, 16 Jan 2009 16:50:30 -0800 (PST)
Received: by 10.210.11.1 with HTTP; Fri, 16 Jan 2009 16:50:30 -0800 (PST)
Message-ID: <f372a76b0901161650r3bbbad25raf1fedfb24d68063@mail.gmail.com>
Date: Fri, 16 Jan 2009 16:50:30 -0800
From: "Jason DiCioccio" <jd@ods.org>
To: vwe@freebsd.org
In-Reply-To: <f372a76b0901021301k4a13d7aem980c3bc591bd44c4@mail.gmail.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
References: <200812311353.mBVDraLJ042040@freefall.freebsd.org>
	<f372a76b0812311041t35762cd2nd9b0bb7634001054@mail.gmail.com>
	<f372a76b0901021301k4a13d7aem980c3bc591bd44c4@mail.gmail.com>
Cc: freebsd-net@freebsd.org, freebsd-bugs@freebsd.org,
	bugs-followup@freebsd.org
Subject: Re: kern/130059: [panic] Leaking 50k mbufs/hour
X-BeenThere: freebsd-bugs@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Bug reports <freebsd-bugs.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-bugs>,
	<mailto:freebsd-bugs-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-bugs>
List-Post: <mailto:freebsd-bugs@freebsd.org>
List-Help: <mailto:freebsd-bugs-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-bugs>,
	<mailto:freebsd-bugs-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sat, 17 Jan 2009 00:50:33 -0000

I narrowed this bug down to the following patch to djb's ucspi-tcp
(adds ipv6 functionality):
http://www.fefe.de/ucspi/

I don't think that userland processes should be able to wreak that
much havoc on the network stack.  Another thing of note is that even
if I kill the processes causing the problem, the mbufs are never
reclaimed.  Seems like a permanent leak.

When I got rid of the ipv6 patch, the mbufs stopped building up and
everything has been fine..  Note that the ipv6 traffic for this
process was fairly minimal.