From owner-freebsd-stable@FreeBSD.ORG Mon Apr 21 11:28:46 2008 Return-Path: Delivered-To: stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 19C9D106566B; Mon, 21 Apr 2008 11:28:46 +0000 (UTC) (envelope-from kostikbel@gmail.com) Received: from relay01.kiev.sovam.com (relay01.kiev.sovam.com [62.64.120.200]) by mx1.freebsd.org (Postfix) with ESMTP id A9DEA8FC19; Mon, 21 Apr 2008 11:28:45 +0000 (UTC) (envelope-from kostikbel@gmail.com) Received: from [212.82.216.226] (helo=skuns.kiev.zoral.com.ua) by relay01.kiev.sovam.com with esmtps (TLSv1:AES256-SHA:256) (Exim 4.67) (envelope-from ) id 1Jntlu-000D1p-UA; Mon, 21 Apr 2008 14:01:19 +0300 Received: from deviant.kiev.zoral.com.ua (root@deviant.kiev.zoral.com.ua [10.1.1.148]) by skuns.kiev.zoral.com.ua (8.14.2/8.14.2) with ESMTP id m3LB1C6f026291 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Mon, 21 Apr 2008 14:01:12 +0300 (EEST) (envelope-from kostikbel@gmail.com) Received: from deviant.kiev.zoral.com.ua (kostik@localhost [127.0.0.1]) by deviant.kiev.zoral.com.ua (8.14.2/8.14.2) with ESMTP id m3LB15GL029944; Mon, 21 Apr 2008 14:01:05 +0300 (EEST) (envelope-from kostikbel@gmail.com) Received: (from kostik@localhost) by deviant.kiev.zoral.com.ua (8.14.2/8.14.2/Submit) id m3LB15em029943; Mon, 21 Apr 2008 14:01:05 +0300 (EEST) (envelope-from kostikbel@gmail.com) X-Authentication-Warning: deviant.kiev.zoral.com.ua: kostik set sender to kostikbel@gmail.com using -f Date: Mon, 21 Apr 2008 14:01:05 +0300 From: Kostik Belousov To: "Mikhail T." Message-ID: <20080421110105.GH18958@deviant.kiev.zoral.com.ua> References: <200804202310.m3KNAi9b001090@aldan.algebra.com> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="xEruU51OOzV9VdJQ" Content-Disposition: inline In-Reply-To: <200804202310.m3KNAi9b001090@aldan.algebra.com> User-Agent: Mutt/1.4.2.3i X-Virus-Scanned: ClamAV version 0.91.2, clamav-milter version 0.91.2 on skuns.kiev.zoral.com.ua X-Virus-Status: Clean X-Spam-Status: No, score=-4.4 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00 autolearn=ham version=3.2.4 X-Spam-Checker-Version: SpamAssassin 3.2.4 (2008-01-01) on skuns.kiev.zoral.com.ua X-Scanner-Signature: a8c813420754d5015e2a5a3aeed75c84 X-DrWeb-checked: yes X-SpamTest-Envelope-From: kostikbel@gmail.com X-SpamTest-Group-ID: 00000000 X-SpamTest-Info: Profiles 2679 [Apr 21 2008] X-SpamTest-Info: helo_type=3 X-SpamTest-Info: {received from trusted relay: not dialup} X-SpamTest-Method: none X-SpamTest-Method: Local Lists X-SpamTest-Rate: 0 X-SpamTest-Status: Not detected X-SpamTest-Status-Extended: not_detected X-SpamTest-Version: SMTP-Filter Version 3.0.0 [0255], KAS30/Release Cc: stable@freebsd.org, fs@freebsd.org Subject: Re: panic: ffs_truncate: readonly filesystem X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 21 Apr 2008 11:28:46 -0000 --xEruU51OOzV9VdJQ Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Sun, Apr 20, 2008 at 07:10:44PM -0400, Mikhail T. wrote: > Hello! >=20 > I tried, accidentally, to save a video-file (via firewire) to a > read-only location. >=20 > The entire system paniced with the message in subject. Why did it > happen? Because the kernel has a bug ? As is, the report is useless. Please, do not hesitate to provide at least the backtrace. The ufs_setattr() seems to properly check for ro mounts, as well as the direct callers of the UFS_TRUNCATE() function. Besides the possible logic error, the other possibility is the concurrent remount. Could it be that you actually remounted the fs readonly during the write ? --xEruU51OOzV9VdJQ Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.8 (FreeBSD) iEYEARECAAYFAkgMc/AACgkQC3+MBN1Mb4hahwCeLY+yLzxcTiaVnLtLvxXzK/OZ mJUAn2yDu+FLm1gjHEap89vW2meb1PeC =/GD2 -----END PGP SIGNATURE----- --xEruU51OOzV9VdJQ--