Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755865Ab0KJSOA (ORCPT ); Wed, 10 Nov 2010 13:14:00 -0500 Received: from mx3.mail.elte.hu ([157.181.1.138]:54416 "EHLO mx3.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755564Ab0KJSN7 (ORCPT ); Wed, 10 Nov 2010 13:13:59 -0500 Date: Wed, 10 Nov 2010 19:13:31 +0100 From: Ingo Molnar To: Dave Jones , Andrew Morton , 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: <20101110181331.GD22410@elte.hu> References: <1289348309.7380.31.camel@dan> <20101110082516.GB3341@elte.hu> <20101110072638.b0e5473d.akpm@linux-foundation.org> <20101110175042.GB1923@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20101110175042.GB1923@redhat.com> 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: 1581 Lines: 40 * Dave Jones wrote: > On Wed, Nov 10, 2010 at 07:26:38AM -0800, Andrew Morton wrote: > > > 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? > > short answer: yes. > > * /etc/sysctl.conf is for users to override decisions distros have made, > rather than a catalog of those decisions. > > * Sometimes we change our mind on those decisions. Flipping a config option > in the kernel means we push out an update, and forget about it. > Users /etc/sysctl.conf's contain all kinds of crazyness. ask Davem about > the stale TCP 'tuning' crap that lingered for years in Fedora users configs > before anyone noticed. > (We could update the sysctl.conf at post-install of the kernel package, > but if you've ever seen a distro kernel packaging schema, you'd understand > why adding more magic like this isn't desirable) > > There's a bunch of patches we carry in Fedora that change defaults because there's > no CONFIG option for them, which I've been meaning to get around to hacking up > into options so we can carry a few less patches. _YES_. A self-contained .config that carries all kernel related defaults is a very powerful thing. We need more of that. 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/