From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751233AbWEWBFV (ORCPT ); Mon, 22 May 2006 21:05:21 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751230AbWEWBFV (ORCPT ); Mon, 22 May 2006 21:05:21 -0400 Received: from vbn.0050556.lodgenet.net ([216.142.194.234]:24016 "EHLO vbn.0050556.lodgenet.net") by vger.kernel.org with ESMTP id S1751233AbWEWBFU (ORCPT ); Mon, 22 May 2006 21:05:20 -0400 Subject: Re: [PATCH] 2.6.16.16 Parameter-controlled mmap/stack randomization From: Arjan van de Ven To: John Richard Moser Cc: Pavel Machek , linux-kernel@vger.kernel.org In-Reply-To: <4471E77F.1010704@comcast.net> References: <446E6A3B.8060100@comcast.net> <1148132838.3041.3.camel@laptopd505.fenrus.org> <446F3483.40208@comcast.net> <20060522010606.GC25434@elf.ucw.cz> <44712605.4000001@comcast.net> <20060522083352.GA11923@elf.ucw.cz> <4471E77F.1010704@comcast.net> Content-Type: text/plain Date: Tue, 23 May 2006 03:05:16 +0200 Message-Id: <1148346316.3100.6.camel@laptopd505.fenrus.org> Mime-Version: 1.0 X-Mailer: Evolution 2.2.3 (2.2.3-2.fc4) Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 2006-05-22 at 12:31 -0400, John Richard Moser wrote: > It is still possible that ARCH_STACK_RANDOM_BITS_DEFAULT breaks things. > The current kernel default broke emacs at first I heard; hearsay.. where did you hear this and what exact randomization was this? > I believe we > started with 64KiB of stack randomization and then upped it to 8MiB when > emacs was fixed. this is new information to me, I find this really really hard to believe as true but maybe you have information I don't have...