Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755229AbYBKN5S (ORCPT ); Mon, 11 Feb 2008 08:57:18 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752577AbYBKN5J (ORCPT ); Mon, 11 Feb 2008 08:57:09 -0500 Received: from aun.it.uu.se ([130.238.12.36]:35671 "EHLO aun.it.uu.se" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752464AbYBKN5I (ORCPT ); Mon, 11 Feb 2008 08:57:08 -0500 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <18352.21524.186194.426982@harpo.it.uu.se> Date: Mon, 11 Feb 2008 14:56:36 +0100 From: Mikael Pettersson To: Adrian Bunk Cc: Ingo Molnar , Thomas Gleixner , linux-kernel@vger.kernel.org, Riku Voipio , Mikael Pettersson , Lennert Buytenhek , Rusty Russell Subject: Re: futex local DoS on most architectures In-Reply-To: <20080211130700.GF27537@movial.fi> References: <20080211130700.GF27537@movial.fi> X-Mailer: VM 7.17 under Emacs 20.7.1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 765 Lines: 24 Adrian Bunk writes: > The issue described in [1] is still present and unfixed (and even the > fix there wasn't complete since it didn't cover SMP). > > Thanks to Riku Voipio for noting that it is still unfixed. > > cu > Adrian > > [1] http://lkml.org/lkml/2007/8/1/474 I think calling it a local DoS may make people take it less seriously. The problem is not related to attacks or malice. It's NORMAL futex usage on the affected architectures that's broken and will throw the kernel into a loop. /Mikael -- 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/