From owner-freebsd-current@FreeBSD.ORG  Thu May 24 16:08:57 2007
Return-Path: <owner-freebsd-current@FreeBSD.ORG>
X-Original-To: Current@FreeBSD.org
Delivered-To: freebsd-current@FreeBSD.ORG
Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52])
	by hub.freebsd.org (Postfix) with ESMTP id E963E16A421;
	Thu, 24 May 2007 16:08:57 +0000 (UTC)
	(envelope-from marcus@marcuscom.com)
Received: from creme-brulee.marcuscom.com (creme-brulee.marcuscom.com
	[24.172.16.118])
	by mx1.freebsd.org (Postfix) with ESMTP id 9D83013C46C;
	Thu, 24 May 2007 16:08:57 +0000 (UTC)
	(envelope-from marcus@marcuscom.com)
Received: from [IPv6:2001:470:1f00:2464::4] (shumai.marcuscom.com
	[IPv6:2001:470:1f00:2464::4])
	by creme-brulee.marcuscom.com (8.14.1/8.14.1) with ESMTP id
	l4OG94FS073638; Thu, 24 May 2007 12:09:04 -0400 (EDT)
	(envelope-from marcus@marcuscom.com)
From: Joe Marcus Clarke <marcus@marcuscom.com>
To: attilio@FreeBSD.org
In-Reply-To: <4655D5C1.2010905@FreeBSD.org>
References: <1179962663.75721.6.camel@shumai.marcuscom.com>
	<20070523165051.G9443@10.0.0.1>  <4655D5C1.2010905@FreeBSD.org>
Content-Type: multipart/signed; micalg=pgp-sha1;
	protocol="application/pgp-signature";
	boundary="=-MEQOSqIpBgUlC3yJvumB"
Organization: MarcusCom, Inc.
Date: Thu, 24 May 2007 12:08:39 -0400
Message-Id: <1180022919.10757.24.camel@shumai.marcuscom.com>
Mime-Version: 1.0
X-Mailer: Evolution 2.10.1 FreeBSD GNOME Team Port 
X-Spam-Status: No, score=-2.6 required=5.0 tests=BAYES_00,NO_RELAYS
	autolearn=ham version=3.1.8
X-Spam-Checker-Version: SpamAssassin 3.1.8 (2007-02-13) on
	creme-brulee.marcuscom.com
Cc: Jeff Roberson <jroberson@chesapeake.net>, jeff@FreeBSD.org,
	Current@FreeBSD.org
Subject: Re: Panic on -CURRENT after LDT changes
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: Thu, 24 May 2007 16:08:58 -0000


--=-MEQOSqIpBgUlC3yJvumB
Content-Type: text/plain
Content-Transfer-Encoding: quoted-printable

On Thu, 2007-05-24 at 20:13 +0200, Attilio Rao wrote:
> Jeff Roberson wrote:
> > Thanks,  Attilio and I will look at this right away.
> >=20
> > Jeff
> >=20
> > On Wed, 23 May 2007, Joe Marcus Clarke wrote:
> >=20
> >> On a -CURRENT build today with Jeff's LDT locking changes, I get an
> >> instant, reproducible panic by doing:
> >>
> >> # cd /usr/src
> >> # make -DNO_CLEAN buildworld
> >>
> >> Backing out the LDT changes to /sys/i386/i386/*machdep* corrects the
> >> problem.  Here is a dmesg and backtrace.  In frame 6, it appears mdp i=
s
> >> NULL (i.e. td->td_proc->p_md =3D 0x0).
>=20
> Did you enable WITNESS/INVARIANTS/INVARIANT_SUPPORT?

No, this kernel does not have WITNESS or INVARIANTS.  I can enable those
tomorrow if that would give you more useful information.

Joe

--=20
PGP Key : http://www.marcuscom.com/pgp.asc

--=-MEQOSqIpBgUlC3yJvumB
Content-Type: application/pgp-signature; name=signature.asc
Content-Description: This is a digitally signed message part

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.7 (FreeBSD)

iD8DBQBGVbiGb2iPiv4Uz4cRAgD5AJ4uNUyu/YH4RanCW1txiglYK9UaEwCgkj8f
kxfujJI9KdDihBoIXp0HwZg=
=3Qov
-----END PGP SIGNATURE-----

--=-MEQOSqIpBgUlC3yJvumB--