From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: David Kastrup Newsgroups: gmane.emacs.devel Subject: Re: Needed for the release Date: Sat, 11 Jun 2005 01:34:37 +0200 Message-ID: <85is0lokfm.fsf@lola.goethe.zz> References: <20050610.194059.156818634.jet@gyve.org> NNTP-Posting-Host: main.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: sea.gmane.org 1118446370 19265 80.91.229.2 (10 Jun 2005 23:32:50 GMT) X-Complaints-To: usenet@sea.gmane.org NNTP-Posting-Date: Fri, 10 Jun 2005 23:32:50 +0000 (UTC) Cc: Masatake YAMATO , emacs-devel@gnu.org Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Sat Jun 11 01:32:49 2005 Return-path: Original-Received: from lists.gnu.org ([199.232.76.165]) by ciao.gmane.org with esmtp (Exim 4.43) id 1DgszZ-00021I-0U for ged-emacs-devel@m.gmane.org; Sat, 11 Jun 2005 01:32:49 +0200 Original-Received: from localhost ([127.0.0.1] helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1Dgt3p-0004Hz-Sb for ged-emacs-devel@m.gmane.org; Fri, 10 Jun 2005 19:37:13 -0400 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1Dgt3e-0004ES-BK for emacs-devel@gnu.org; Fri, 10 Jun 2005 19:37:02 -0400 Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1Dgt3c-0004Cs-Qp for emacs-devel@gnu.org; Fri, 10 Jun 2005 19:37:00 -0400 Original-Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1Dgt3c-0004Bb-LL for emacs-devel@gnu.org; Fri, 10 Jun 2005 19:37:00 -0400 Original-Received: from [199.232.76.164] (helo=fencepost.gnu.org) by monty-python.gnu.org with esmtp (Exim 4.34) id 1Dgt1v-0006Ec-Jn for emacs-devel@gnu.org; Fri, 10 Jun 2005 19:35:15 -0400 Original-Received: from localhost ([127.0.0.1] helo=lola.goethe.zz) by fencepost.gnu.org with esmtp (Exim 4.34) id 1Dgt16-00048M-Un; Fri, 10 Jun 2005 19:34:25 -0400 Original-Received: by lola.goethe.zz (Postfix, from userid 1002) id 20E791C15385; Sat, 11 Jun 2005 01:34:37 +0200 (CEST) Original-To: rms@gnu.org In-Reply-To: (Richard Stallman's message of "Fri, 10 Jun 2005 18:37:21 -0400") User-Agent: Gnus/5.11 (Gnus v5.11) Emacs/22.0.50 (gnu/linux) X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:38549 X-Report-Spam: http://spam.gmane.org/gmane.emacs.devel:38549 Richard Stallman writes: > What I remember is that Red Hat enables a feature in Linux that (I > believe) uses the address space differently. unexelf.c doesn't handle > it right. > > I don't remember the name of the feature, but I'm sure other people > on this list remember the name. exec_shield is one such feature, and newer kernels use something like, uh, /proc/sys/vm/randomize_... (I don't remember the particular name right now and don't have a Fedora active). The latter loaded executables' memory segments into randomized locations to make buffer overflow attacks less predictable. exec_shield could be gotten around with using setarch i386 make and configure does that already IIRC. But the address space randomization was prohibiting the dumping even with the setarch command. -- David Kastrup, Kriemhildstr. 15, 44793 Bochum