From owner-freebsd-current@FreeBSD.ORG Tue Aug 13 05:59:47 2013 Return-Path: Delivered-To: current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTP id 5FBF2F40 for ; Tue, 13 Aug 2013 05:59:47 +0000 (UTC) (envelope-from david@catwhisker.org) Received: from albert.catwhisker.org (mx.catwhisker.org [198.144.209.73]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id 21BEA2A72 for ; Tue, 13 Aug 2013 05:59:46 +0000 (UTC) Received: from albert.catwhisker.org (localhost [127.0.0.1]) by albert.catwhisker.org (8.14.7/8.14.7) with ESMTP id r7D5xd6O012020; Mon, 12 Aug 2013 22:59:39 -0700 (PDT) (envelope-from david@albert.catwhisker.org) Received: (from david@localhost) by albert.catwhisker.org (8.14.7/8.14.7/Submit) id r7D5xdCd012019; Mon, 12 Aug 2013 22:59:39 -0700 (PDT) (envelope-from david) Date: Mon, 12 Aug 2013 22:59:39 -0700 From: David Wolfskill To: Konstantin Belousov Subject: Re: Early drop to debugger with DEBUG_MEMGUARD Message-ID: <20130813055939.GL1570@albert.catwhisker.org> References: <20130812151314.GE1570@albert.catwhisker.org> <20130812160154.GF1570@albert.catwhisker.org> <20130812214435.GH1570@albert.catwhisker.org> <20130813052944.GX4972@kib.kiev.ua> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="aYrjF+tKt+ApYAdb" Content-Disposition: inline In-Reply-To: <20130813052944.GX4972@kib.kiev.ua> User-Agent: Mutt/1.5.21 (2010-09-15) Cc: current@freebsd.org X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.14 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: Tue, 13 Aug 2013 05:59:47 -0000 --aYrjF+tKt+ApYAdb Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, Aug 13, 2013 at 08:29:44AM +0300, Konstantin Belousov wrote: > ... > The r254025 indeed introduced the problem, and Davide pointed out you a > workaround for the assertion triggering. Right; I tried one of those -- I hope I got it right... > Proper fix for the memguard requires a policy of M_NEXTFIT or like, to > avoid a reuse of the previous allocated range as long as possible. Ah. > But, you have some further issue even after the assertion was silenced, > isn't it ? Yes; please see for a copy of the message that shows the resulting panic. (Or see previous messages i this thread, if that's easier.) It looks (from my naive perspective) as if mti_zone hadn't been initialized (properly? at all?). In any case, I remain willing to test, subject to Internet connectivity flakiness where I am now and other demands on my time. Peace, david --=20 David H. Wolfskill david@catwhisker.org Taliban: Evil men with guns afraid of truth from a 14-year old girl. See http://www.catwhisker.org/~david/publickey.gpg for my public key. --aYrjF+tKt+ApYAdb Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.20 (FreeBSD) iEYEARECAAYFAlIJy0oACgkQmprOCmdXAD0V2wCghyK7SUNFrOr2VBNxBdQMumiF A6YAn2cgtv/lnEabUuEL8lIM0Crbq6zz =JsjF -----END PGP SIGNATURE----- --aYrjF+tKt+ApYAdb--