From owner-freebsd-questions@FreeBSD.ORG Mon Jul 13 21:28:07 2009 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id DA84E1065676 for ; Mon, 13 Jul 2009 21:28:06 +0000 (UTC) (envelope-from glen.j.barber@gmail.com) Received: from mail-bw0-f221.google.com (mail-bw0-f221.google.com [209.85.218.221]) by mx1.freebsd.org (Postfix) with ESMTP id 618588FC15 for ; Mon, 13 Jul 2009 21:28:06 +0000 (UTC) (envelope-from glen.j.barber@gmail.com) Received: by bwz21 with SMTP id 21so2129941bwz.43 for ; Mon, 13 Jul 2009 14:28:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:in-reply-to:references :date:message-id:subject:from:to:cc:content-type :content-transfer-encoding; bh=IOgR96uTnnMBagOd/vT/yVti9ycSbe9tnBvjNlPKSvs=; b=kah6UaYm+sG7LhvkMKhOJpJdOwMK3ApdpoZRIVXFEFaTLV0KOdPoGuBMOKodD+YihW TF0rp9lynwpjlOBxbXDDQn7wMBnIWF7i2V6zcxjDZVSY9uHyJKT4mxqrY9osgTtz/6YN +gOrrZneRibARNv7RqA0nqF30pusdD7G0iSV4= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type:content-transfer-encoding; b=wB6oy/uel9co+7bGdJ6YWB7YbtQt9uCANhxx4Js+xsWMCVJgW7g6995lfUQlkadUki Q5GJUSK5qxnfTn4pZh7jT05QA3noM6BA9Q6mPHLTvpU9nt/pYBDn8nvfRoqCatVtT34e xcrVodtpzIiSKnlXJYR3FaTD0ojg4OpP7VSQo= MIME-Version: 1.0 Received: by 10.204.99.129 with SMTP id u1mr5567740bkn.200.1247520485350; Mon, 13 Jul 2009 14:28:05 -0700 (PDT) In-Reply-To: <1bd550a00907131347j118904b8j4dbc06b538283ae@mail.gmail.com> References: <1bd550a00907131347j118904b8j4dbc06b538283ae@mail.gmail.com> Date: Mon, 13 Jul 2009 17:28:05 -0400 Message-ID: <4ad871310907131428v533d5187p17fd6536224bcd21@mail.gmail.com> From: Glen Barber To: =?ISO-8859-1?Q?Fernando_Apestegu=EDa?= Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Cc: User Questions Subject: Re: 8.0 BETA1 LOR X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 13 Jul 2009 21:28:07 -0000 Hi, Fernando 2009/7/13 Fernando Apestegu=EDa : > Hi there, > > I downloaded FreeBSD 8.0 in order to help testing it. I have found > several issues. This is the first one: > > Jul 13 18:37:43 beastie kernel: lock order reversal: > Jul 13 18:37:43 beastie kernel: 1st 0xffffff0007d42ba8 ufs (ufs) @ > /usr/src/sys/kern/vfs_mount.c:1199 > Jul 13 18:37:43 beastie kernel: 2nd 0xffffff002e007270 devfs (devfs) @ > /usr/src/sys/fs/msdosfs/msdosfs_vfsops.c:944 > Jul 13 18:37:43 beastie kernel: KDB: stack backtrace: > Jul 13 18:37:43 beastie kernel: db_trace_self_wrapper() at > db_trace_self_wrapper+0x2a > Jul 13 18:37:43 beastie kernel: _witness_debugger() at _witness_debugger+= 0x2e > Jul 13 18:37:43 beastie kernel: witness_checkorder() at witness_checkorde= r+0x81e > Jul 13 18:37:43 beastie kernel: __lockmgr_args() at __lockmgr_args+0xcf3 > Jul 13 18:37:43 beastie kernel: vop_stdlock() at vop_stdlock+0x39 > Jul 13 18:37:43 beastie kernel: VOP_LOCK1_APV() at VOP_LOCK1_APV+0x9b > Jul 13 18:37:43 beastie kernel: _vn_lock() at _vn_lock+0x47 > Jul 13 18:37:43 beastie kernel: msdosfs_sync() at msdosfs_sync+0x227 > Jul 13 18:37:43 beastie kernel: dounmount() at dounmount+0x2ca > Jul 13 18:37:43 beastie kernel: unmount() at unmount+0x28a > Jul 13 18:37:43 beastie kernel: syscall() at syscall+0x1af > Jul 13 18:37:43 beastie kernel: Xfast_syscall() at Xfast_syscall+0xd0 > Jul 13 18:37:43 beastie kernel: --- syscall (22, FreeBSD ELF64, > unmount), rip =3D 0x8006a09ac, rsp =3D 0x7fffffffdc38, rbp =3D 0 --- > Jul 13 18:37:44 beastie gnome-keyring-daemon[61245]: removing > removable location: volume_size_4144496640 > > I got this while trying to unmount a USB device. The unmounting seemed > to be fine, all the files were in the device and no corruption > occurred. I found a very similar problem (maybe the same) here[1]. Any > clues about this? > > > Thanks in advance. > > PS: Is this the proper list for asking these questions? > > [1] http://forums.freebsd.org/showthread.php?p=3D31490 You can view reported lock order reversals here: http://sources.zabbadoz.net/freebsd/lor.html Questions about the -CURRENT branch should be asked on questions@. --=20 Glen Barber