Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030384AbVKCRFp (ORCPT ); Thu, 3 Nov 2005 12:05:45 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1030385AbVKCRFp (ORCPT ); Thu, 3 Nov 2005 12:05:45 -0500 Received: from thunk.org ([69.25.196.29]:64729 "EHLO thunker.thunk.org") by vger.kernel.org with ESMTP id S1030384AbVKCRFp (ORCPT ); Thu, 3 Nov 2005 12:05:45 -0500 Date: Thu, 3 Nov 2005 12:05:27 -0500 From: "Theodore Ts'o" To: Alan Cox Cc: Nathan Scott , Jan Kasprzak , linux-kernel@vger.kernel.org, linux-xfs@oss.sgi.com Subject: Re: XFS information leak during crash Message-ID: <20051103170527.GA7113@thunk.org> Mail-Followup-To: Theodore Ts'o , Alan Cox , Nathan Scott , Jan Kasprzak , linux-kernel@vger.kernel.org, linux-xfs@oss.sgi.com References: <20051102212722.GC6759@fi.muni.cz> <20051103101107.O6239737@wobbly.melbourne.sgi.com> <20051102233629.GD6759@fi.muni.cz> <20051103104956.B6081538@wobbly.melbourne.sgi.com> <20051103000317.GE6759@fi.muni.cz> <20051103111115.C6081538@wobbly.melbourne.sgi.com> <1131021949.18848.21.camel@localhost.localdomain> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1131021949.18848.21.camel@localhost.localdomain> User-Agent: Mutt/1.5.11 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1006 Lines: 24 On Thu, Nov 03, 2005 at 12:45:49PM +0000, Alan Cox wrote: > On Iau, 2005-11-03 at 11:11 +1100, Nathan Scott wrote: > > On Thu, Nov 03, 2005 at 01:03:17AM +0100, Jan Kasprzak wrote: > > > : it would only ever be uninitialised, previously-free space. > > > > > > Yes, but an old data from previously deleted files > > > (sendmail's temporary files, vim save files, etc) may contain > > > a sensitive information. > > > > Indeed. But this is a generic issue affecting most filesystems; > > its not specific to XFS as your original mail claimed. > > Very true. You can use ext3 in data journalling mode if this is a > concern but that guarantee has a performance cost The default ordered journalling mode solves this problem at a much lower cost. - Ted - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/