From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Masatake YAMATO Newsgroups: gmane.emacs.devel Subject: Re: Needed for the release Date: Fri, 17 Jun 2005 01:52:51 +0900 (JST) Message-ID: <20050617.015251.260808956.jet@gyve.org> References: <85is0lokfm.fsf@lola.goethe.zz> <20050616.132230.213364433.jet@gyve.org> <200506161648.j5GGmt8x025104@amrm2.ics.uci.edu> NNTP-Posting-Host: main.gmane.org Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Trace: sea.gmane.org 1118941232 26438 80.91.229.2 (16 Jun 2005 17:00:32 GMT) X-Complaints-To: usenet@sea.gmane.org NNTP-Posting-Date: Thu, 16 Jun 2005 17:00:32 +0000 (UTC) Cc: rms@gnu.org, emacs-devel@gnu.org Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Thu Jun 16 19:00:23 2005 Return-path: Original-Received: from lists.gnu.org ([199.232.76.165]) by ciao.gmane.org with esmtp (Exim 4.43) id 1Dixi2-0000rZ-RF for ged-emacs-devel@m.gmane.org; Thu, 16 Jun 2005 18:59:19 +0200 Original-Received: from localhost ([127.0.0.1] helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1DixnU-00065I-Kk for ged-emacs-devel@m.gmane.org; Thu, 16 Jun 2005 13:04:56 -0400 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1DixmJ-0005hg-5I for emacs-devel@gnu.org; Thu, 16 Jun 2005 13:03:43 -0400 Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1DixmE-0005fW-Ny for emacs-devel@gnu.org; Thu, 16 Jun 2005 13:03:39 -0400 Original-Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1DixmB-0005aC-SD for emacs-devel@gnu.org; Thu, 16 Jun 2005 13:03:37 -0400 Original-Received: from [210.130.136.40] (helo=r-maa.spacetown.ne.jp) by monty-python.gnu.org with esmtp (Exim 4.34) id 1Dixjf-0008GY-UR; Thu, 16 Jun 2005 13:01:00 -0400 Original-Received: from localhost (h219-110-076-099.catv01.itscom.jp [219.110.76.99]) by r-maa.spacetown.ne.jp (8.11.6) with ESMTP id j5GGwjA27745; Fri, 17 Jun 2005 01:58:47 +0900 (JST) Original-To: dann@ics.uci.edu In-Reply-To: <200506161648.j5GGmt8x025104@amrm2.ics.uci.edu> X-Mailer: Mew version 4.2 on Emacs 22.0.50 / Mule 5.0 (SAKAKI) 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:38974 X-Report-Spam: http://spam.gmane.org/gmane.emacs.devel:38974 > Masatake YAMATO writes: > > > Sorry to be late. > > > > > 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. > > > > Could you tell me the kernel version or the OS version? > > > > I'm using Fedora core 1 and Fedora core 3. > > I cannot reproduce the problem on the platforms. > > The problem occurs in Fedora Core 4. > On a FC4 system: > echo 0 > /proc/sys/kernel/randomize_va_space > is required in order to be able to dump Emacs. Thank you. I'll update my FC3 pc. Masatake