From owner-freebsd-current@FreeBSD.ORG Fri Jun 24 15:03:53 2005 Return-Path: X-Original-To: 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 106D916A41C for ; Fri, 24 Jun 2005 15:03:53 +0000 (GMT) (envelope-from kris@obsecurity.org) Received: from obsecurity.dyndns.org (CPE0050040655c8-CM00111ae02aac.cpe.net.cable.rogers.com [69.194.102.232]) by mx1.FreeBSD.org (Postfix) with ESMTP id D18C943D48 for ; Fri, 24 Jun 2005 15:03:52 +0000 (GMT) (envelope-from kris@obsecurity.org) Received: by obsecurity.dyndns.org (Postfix, from userid 1000) id 8EEC751215; Fri, 24 Jun 2005 11:03:51 -0400 (EDT) Date: Fri, 24 Jun 2005 11:03:51 -0400 From: Kris Kennaway To: Thierry Herbelot Message-ID: <20050624150350.GA3256@xor.obsecurity.org> References: <200506241626.57469.thierry@herbelot.com> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="6TrnltStXW4iwmi0" Content-Disposition: inline In-Reply-To: <200506241626.57469.thierry@herbelot.com> User-Agent: Mutt/1.4.2.1i Cc: current@freebsd.org 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 List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 24 Jun 2005 15:03:53 -0000 --6TrnltStXW4iwmi0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Fri, Jun 24, 2005 at 04:26:55PM +0200, Thierry Herbelot wrote: >=20 > This is with an SMP machine (oldish BP6) Looks like you forgot to include the full panic...wasn't there a "last used by FOO" also displayed? If so, you should configure DEBUG_MEMGUARD to watch this malloc type (some assembly required, but it's pretty straightforward -- see Bosko Milekic's post to this mailing list when he committed support describing how to do it) and try to replicate the panic. Kris --6TrnltStXW4iwmi0 Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.1 (FreeBSD) iD8DBQFCvCDWWry0BWjoQKURAk9jAJ9F2+QEqNMrh7KZPMAcwLtSPCEycQCfWvxO fKKTdE9wENMV7EFPQihvVWA= =iQ+Q -----END PGP SIGNATURE----- --6TrnltStXW4iwmi0--