From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261249AbVBFOIr (ORCPT ); Sun, 6 Feb 2005 09:08:47 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261273AbVBFOIr (ORCPT ); Sun, 6 Feb 2005 09:08:47 -0500 Received: from mx2.elte.hu ([157.181.151.9]:5029 "EHLO mx2.elte.hu") by vger.kernel.org with ESMTP id S261249AbVBFOIM (ORCPT ); Sun, 6 Feb 2005 09:08:12 -0500 Date: Sun, 6 Feb 2005 15:08:02 +0100 From: Ingo Molnar To: Andi Kleen Cc: Christoph Hellwig , Arjan van de Ven , akpm@osdl.org, torvalds@osdl.org, linux-kernel@vger.kernel.org, drepper@redhat.com Subject: Re: [PROPOSAL/PATCH] Remove PT_GNU_STACK support before 2.6.11 Message-ID: <20050206140802.GA6323@elte.hu> References: <20050206114758.GA8437@infradead.org> <20050206120244.GA28061@elte.hu> <20050206124523.GA762@elte.hu> <20050206125002.GF30109@wotan.suse.de> <1107694800.22680.90.camel@laptopd505.fenrus.org> <20050206130152.GH30109@wotan.suse.de> <20050206130650.GA32015@infradead.org> <20050206131130.GJ30109@wotan.suse.de> <20050206133239.GA4483@elte.hu> <20050206134640.GB30476@wotan.suse.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20050206134640.GB30476@wotan.suse.de> User-Agent: Mutt/1.4.1i X-ELTE-SpamVersion: MailScanner 4.31.6-itk1 (ELTE 1.2) SpamAssassin 2.63 ClamAV 0.73 X-ELTE-VirusStatus: clean X-ELTE-SpamCheck: no X-ELTE-SpamCheck-Details: score=-4.9, required 5.9, autolearn=not spam, BAYES_00 -4.90 X-ELTE-SpamLevel: X-ELTE-SpamScore: -4 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org * Andi Kleen wrote: > > RWE. But if it triggers it shows up immediately so it's not like you > > have no sign that something wrong is going on. Only grub-install > > triggers it and no boot/install kernel i know of defaults to > > PAE-enabled, that's what caused grub-install being used in an NX > > scenario so infrequently.) > > > > anyway, this particular flamewar might have made more sense last Summer. > > Last summer nobody did change the 32bit ABI on x86-64. > > I only started it because the bug reports are appearing now and it's > clear now that we have a problem. the vanilla 2.6.10 x64 kernel, using 32-bit fedora userland boots fine here, and gives a noexec stack: $ ./test-stack Segmentation fault $ $ uname -a Linux saturn 2.6.10 #1 Sun Feb 6 15:52:44 CET 2005 x86_64 x86_64 x86_64 GNU/Linux $ $ readelf -l test-stack | grep STA GNU_STACK 0x000000 0x00000000 0x00000000 0x00000 0x00000 RW 0x4 Ingo