Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755759Ab0KJSKK (ORCPT ); Wed, 10 Nov 2010 13:10:10 -0500 Received: from mx2.mail.elte.hu ([157.181.151.9]:48351 "EHLO mx2.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755265Ab0KJSKH (ORCPT ); Wed, 10 Nov 2010 13:10:07 -0500 Date: Wed, 10 Nov 2010 19:10:00 +0100 From: Ingo Molnar To: Andrew Morton Cc: Dan Rosenberg , linux-kernel@vger.kernel.org, torvalds@linux-foundation.org, kees.cook@canonical.com Subject: Re: [PATCH v2] Restrict unprivileged access to kernel syslog Message-ID: <20101110181000.GC22410@elte.hu> References: <1289348309.7380.31.camel@dan> <20101110082516.GB3341@elte.hu> <20101110072638.b0e5473d.akpm@linux-foundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20101110072638.b0e5473d.akpm@linux-foundation.org> User-Agent: Mutt/1.5.20 (2009-08-17) X-ELTE-SpamScore: -2.0 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-2.0 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.2.5 -2.0 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0000] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1016 Lines: 28 * Andrew Morton wrote: > OK by me, apart from ... > > a) I'd question the need for the config option. Are distros really > so lame that they can't trust themselves to poke a number into > procfs at boot time? When it comes to security i personally prefer 'permanent' defaults that is a property of the booting image. I'd even change the default for the x86 defconfig for example - and we could make this option default-y in the future. (We cannot ever make the sysctl default itself default-1, it would break compatibility with old behavior.) > b) we have "dmesg_restrict" and "CONFIG_RESTRICT_DMESG". Less > dyslexia, please. Good point. CONFIG_DMESG_RESTRICT is the proper hierarchical naming i suspect. Thanks, Ingo -- 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/