From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932830AbXGZKZn (ORCPT ); Thu, 26 Jul 2007 06:25:43 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754439AbXGZKZe (ORCPT ); Thu, 26 Jul 2007 06:25:34 -0400 Received: from smtp2.linux-foundation.org ([207.189.120.14]:51002 "EHLO smtp2.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753311AbXGZKZe (ORCPT ); Thu, 26 Jul 2007 06:25:34 -0400 Date: Thu, 26 Jul 2007 03:25:16 -0700 From: Andrew Morton To: Rene Herman Cc: Alan Cox , Andi Kleen , Masoud Sharbiani , Kirill Korotaev , linux-kernel@vger.kernel.org Subject: Re: i386-show-unhandled-signals-v3 Message-Id: <20070726032516.3de343c6.akpm@linux-foundation.org> In-Reply-To: <46A874B8.7000407@gmail.com> References: <20070718154759.GA26425@google.com> <4517d1380707251407v178068baxcc76a86f8337cc27@mail.gmail.com> <20070725162528.7d485ff8.akpm@linux-foundation.org> <200707261146.23886.ak@suse.de> <20070726111652.56467031@the-village.bc.nu> <46A874B8.7000407@gmail.com> X-Mailer: Sylpheed 2.4.1 (GTK+ 2.8.17; x86_64-unknown-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 26 Jul 2007 12:17:28 +0200 Rene Herman wrote: > On 07/26/2007 12:16 PM, Alan Cox wrote: > > > On Thu, 26 Jul 2007 11:46:23 +0200 > > Andi Kleen wrote: > > > >>> Look: if there's a way in which an unprivileged user can trigger a printk > >>> we fix it, end of story. > >> I'm firmly against disabling it on x86-64 by default. The printks are extremly > >> useful and have found many bugs in the past. > > > > Then add the rate limiting by default. > > The messages were rate limited -- Andrew said they couldn't be on default even > rate limited. > Andrew didn't think too hard, sorry. I agree that on-by-default is a reasonable compromise once they're rate-limited.