From owner-freebsd-current@FreeBSD.ORG  Tue Jan 31 22:47:36 2006
Return-Path: <owner-freebsd-current@FreeBSD.ORG>
X-Original-To: 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 2B41316A420;
	Tue, 31 Jan 2006 22:47:36 +0000 (GMT)
	(envelope-from kris@obsecurity.org)
Received: from elvis.mu.org (elvis.mu.org [192.203.228.196])
	by mx1.FreeBSD.org (Postfix) with ESMTP id BDCF343D6E;
	Tue, 31 Jan 2006 22:47:23 +0000 (GMT)
	(envelope-from kris@obsecurity.org)
Received: from obsecurity.dyndns.org (elvis.mu.org [192.203.228.196])
	by elvis.mu.org (Postfix) with ESMTP id E3A501A3C20;
	Tue, 31 Jan 2006 14:47:22 -0800 (PST)
Received: by obsecurity.dyndns.org (Postfix, from userid 1000)
	id E75DC513A2; Tue, 31 Jan 2006 17:47:21 -0500 (EST)
Date: Tue, 31 Jan 2006 17:47:21 -0500
From: Kris Kennaway <kris@obsecurity.org>
To: Pawel Jakub Dawidek <pjd@FreeBSD.org>
Message-ID: <20060131224721.GA16866@xor.obsecurity.org>
References: <20060131212209.GA870@troutmask.apl.washington.edu>
	<20060131215021.GG4395@haakonia.hitnet.RWTH-Aachen.DE>
	<20060131220828.GA2953@garage.freebsd.pl>
Mime-Version: 1.0
Content-Type: multipart/signed; micalg=pgp-sha1;
	protocol="application/pgp-signature"; boundary="liOOAslEiF7prFVr"
Content-Disposition: inline
In-Reply-To: <20060131220828.GA2953@garage.freebsd.pl>
User-Agent: Mutt/1.4.2.1i
Cc: freebsd-current@freebsd.org, Steve Kargl <sgk@troutmask.apl.washington.edu>
Subject: Re: panic: Memory modified after free
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: Tue, 31 Jan 2006 22:47:36 -0000


--liOOAslEiF7prFVr
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
Content-Transfer-Encoding: quoted-printable

On Tue, Jan 31, 2006 at 11:11:20PM +0100, Pawel Jakub Dawidek wrote:
> On Tue, Jan 31, 2006 at 10:50:21PM +0100, Christian Brueffer wrote:
> +> On Tue, Jan 31, 2006 at 01:22:09PM -0800, Steve Kargl wrote:
> +> > The system is a dual proc Tyan K8S Pro with 12 GB of memory.
> +> > The kernel is UP.  This was recorded by hand. I have the crash dump.
> +> >=20
> +> > Memory modified after free 0xffffff02505e0c00(504) val=3Ddeadc0dd @
> +> > 0xffffff02505e0cd0
> +> >=20
> +>=20
> +> For the record, I got this as well today.  Here it was on my notebook
> +> at system shutdown.
>=20
> Cool, so you have a chance to try memguard(9) and verify my patch to
> manual page:)
>=20
> --- memguard.9  30 Dec 2005 12:28:19 -0000	1.2
> +++ memguard.9  31 Jan 2006 22:06:04 -0000
> @@ -56,6 +56,9 @@ vm.memguard.desc=3D<memory_type>
>  .Ed
>  .Pp
>  Where memory_type is a short description of memory type to monitor.
> +The short description of memory type is the second argument to
> +.Xr MALLOC_DECLARE 9 ,
> +so one has to find it in the kernel source.

ITYM MALLOC_DEFINE?

Kris

--liOOAslEiF7prFVr
Content-Type: application/pgp-signature
Content-Disposition: inline

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.2 (FreeBSD)

iD8DBQFD3+j5Wry0BWjoQKURAvplAJsGfEqg4qq3pjgr+Vv7P70Ycu2yYACgiwhM
hNYYQ5AjmGqqqUH/TYUvrSc=
=vbeq
-----END PGP SIGNATURE-----

--liOOAslEiF7prFVr--