From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758451Ab3JPG4g (ORCPT ); Wed, 16 Oct 2013 02:56:36 -0400 Received: from mail-ea0-f173.google.com ([209.85.215.173]:43811 "EHLO mail-ea0-f173.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751094Ab3JPG4f (ORCPT ); Wed, 16 Oct 2013 02:56:35 -0400 Date: Wed, 16 Oct 2013 08:56:30 +0200 From: Ingo Molnar To: Kees Cook Cc: "H. Peter Anvin" , LKML , Michael Davidson , Thomas Gleixner , "H. Peter Anvin" , "linux-tip-commits@vger.kernel.org" Subject: Re: [tip:x86/kaslr] x86, relocs: Add more per-cpu gold special cases Message-ID: <20131016065630.GC22509@gmail.com> References: <20131011013954.GA28902@www.outflux.net> <20131014083035.GA20976@gmail.com> <007cdb12-9fc7-4744-8686-695891b926a3@email.android.com> <525C1BC1.6090501@zytor.com> <20131015060425.GB3866@gmail.com> <20131015160329.GA16003@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * Kees Cook wrote: > >> > The failure I saw triggered with fairly modern userspace: > >> > > >> > GNU ld version 2.23.52.0.1-9.fc19 20130226 > >> > > >> > gcc version 4.8.1 20130603 (Red Hat 4.8.1-1) (GCC) > >> > >> Can you try with the gold linker? When not using Gold, I can produce > >> a similar crash with GNU ld ver 2.23.2 but not 2.22. > > > > I'm not set up for Gold - but maybe others can try your experiment. > > > > If you can see/reproduce the 2.23 crash then maybe that fix will work > > for my testcase as well. > > I haven't isolated the problem with 2.23 yet, but I'll start digging. I've excluded tip:x86/kaslr from tip:master meanwhile. Thanks, Ingo