From owner-freebsd-fs Sat Mar 2 14: 0:18 2002 Delivered-To: freebsd-fs@freebsd.org Received: from obsecurity.dyndns.org (adsl-64-169-107-10.dsl.lsan03.pacbell.net [64.169.107.10]) by hub.freebsd.org (Postfix) with ESMTP id 129A937B4EF for ; Sat, 2 Mar 2002 13:59:46 -0800 (PST) Received: by obsecurity.dyndns.org (Postfix, from userid 1000) id 3EA9966C80; Sat, 2 Mar 2002 13:59:14 -0800 (PST) Date: Sat, 2 Mar 2002 13:59:14 -0800 From: Kris Kennaway To: Kris Kennaway Cc: Matthew Dillon , Ian Dowse , Kirk McKusick , Finch , fs@FreeBSD.ORG, fanf@chiark.greenend.org.uk Subject: Re: UFS panic on -stable Message-ID: <20020302135914.A33051@xor.obsecurity.org> References: <200202260141.g1Q1f8i28365@beastie.mckusick.com> <200202260237.aa51774@salmon.maths.tcd.ie> <20020226184340.A78562@xor.obsecurity.org> <20020228135233.B5586@xor.obsecurity.org> <20020301173740.A21179@xor.obsecurity.org> <200203020150.g221oWS48392@apollo.backplane.com> <20020301175632.A21599@xor.obsecurity.org> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-md5; protocol="application/pgp-signature"; boundary="FCuugMFkClbJLl1L" Content-Disposition: inline User-Agent: Mutt/1.2.5.1i In-Reply-To: <20020301175632.A21599@xor.obsecurity.org>; from kris@obsecurity.org on Fri, Mar 01, 2002 at 05:56:32PM -0800 Sender: owner-freebsd-fs@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org --FCuugMFkClbJLl1L Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Fri, Mar 01, 2002 at 05:56:32PM -0800, Kris Kennaway wrote: > On Fri, Mar 01, 2002 at 05:50:32PM -0800, Matthew Dillon wrote: >=20 > > I wonder if this has anything to do with MFS's VM pages getting > > paged in and out. > >=20 > > Could you try hacking mount_mfs to mlock() the MFS memory? As > > shown below. I'm not entirely sure this will actually do anything, > > but it's worth a shot (assuming you have enough memory to cover all > > your MFS mounted filesystems). > >=20 > > If this does the trick I'll take a look at the way MFS accesses > > the process's VM space. If it doesn't at least we will know it > > isn't related to MFS's paging. >=20 > Will try! >=20 > I've also given up on trying to get packages built for now, and am > just running some MFS stress tests to try and trigger panics. So much for the MFS theory: /x: bad dir ino 1006899 at offset 0: mangled entry panic: ufs_dirbad: bad dir Debugger("panic") Stopped at Debugger+0x35: movb $0,in_Debugger.426 db> /x is a local UFS filesystem. Kris --FCuugMFkClbJLl1L Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.6 (FreeBSD) Comment: For info see http://www.gnupg.org iD8DBQE8gUsxWry0BWjoQKURArvuAKCF1xy0feM+34O+QYFcHr+E9pO/FgCg0CeM M42TrAykJhOeQyq/xK9PF8I= =qCkL -----END PGP SIGNATURE----- --FCuugMFkClbJLl1L-- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-fs" in the body of the message