From owner-freebsd-current@FreeBSD.ORG Thu May 24 16:35:13 2007 Return-Path: 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 217F416A400; Thu, 24 May 2007 16:35:13 +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 8992313C44B; Thu, 24 May 2007 16:35:12 +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 l4OGZK8q073996; Thu, 24 May 2007 12:35:20 -0400 (EDT) (envelope-from marcus@marcuscom.com) From: Joe Marcus Clarke To: Attilio Rao In-Reply-To: <3bbf2fe10705240930o10f37febt9fb5f0a46bd193c3@mail.gmail.com> References: <1179962663.75721.6.camel@shumai.marcuscom.com> <20070523165051.G9443@10.0.0.1> <4655D5C1.2010905@FreeBSD.org> <1180022919.10757.24.camel@shumai.marcuscom.com> <3bbf2fe10705240930o10f37febt9fb5f0a46bd193c3@mail.gmail.com> Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="=-1+rrZuVz9WT4CIwvk7Nr" Organization: MarcusCom, Inc. Date: Thu, 24 May 2007 12:34:56 -0400 Message-Id: <1180024496.10757.34.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 , 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 List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 24 May 2007 16:35:13 -0000 --=-1+rrZuVz9WT4CIwvk7Nr Content-Type: text/plain Content-Transfer-Encoding: quoted-printable On Thu, 2007-05-24 at 18:30 +0200, Attilio Rao wrote: > 2007/5/24, Joe Marcus Clarke : > > 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. > > > > > > > > Jeff > > > > > > > > On Wed, 23 May 2007, Joe Marcus Clarke wrote: > > > > > > > >> On a -CURRENT build today with Jeff's LDT locking changes, I get a= n > > > >> instant, reproducible panic by doing: > > > >> > > > >> # cd /usr/src > > > >> # make -DNO_CLEAN buildworld > > > >> > > > >> Backing out the LDT changes to /sys/i386/i386/*machdep* corrects t= he > > > >> problem. Here is a dmesg and backtrace. In frame 6, it appears m= dp is > > > >> NULL (i.e. td->td_proc->p_md =3D 0x0). > > > > > > Did you enable WITNESS/INVARIANTS/INVARIANT_SUPPORT? > > > > No, this kernel does not have WITNESS or INVARIANTS. I can enable thos= e > > tomorrow if that would give you more useful information. >=20 > It would be very appreciated, since I've been unable to reproduce your > panic on a centrino dual core. Will do, but it may be that adding those options masks the bug. Have you tried without them? Joe --=20 PGP Key : http://www.marcuscom.com/pgp.asc --=-1+rrZuVz9WT4CIwvk7Nr 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) iD8DBQBGVb6vb2iPiv4Uz4cRAg0bAKCOAmvIeDjkLS4SjRnBHEqzduzFxgCfegzA X8tmUADbcmuuK9elQuPOTuY= =SJ4S -----END PGP SIGNATURE----- --=-1+rrZuVz9WT4CIwvk7Nr--