Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932517Ab1EMJBq (ORCPT ); Fri, 13 May 2011 05:01:46 -0400 Received: from mx2.mail.elte.hu ([157.181.151.9]:47533 "EHLO mx2.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932201Ab1EMJBp (ORCPT ); Fri, 13 May 2011 05:01:45 -0400 Date: Fri, 13 May 2011 11:01:29 +0200 From: Ingo Molnar To: Stephane Eranian Cc: Dave Jones , Linus Torvalds , Arnaldo Carvalho de Melo , LKML Subject: Re: [BUG] perf: bogus correlation of kernel symbols Message-ID: <20110513090129.GG13647@elte.hu> References: <20110512213542.GB17596@elte.hu> <20110512215023.GA20939@elte.hu> <20110512220715.GA7451@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.20 (2009-08-17) X-ELTE-SpamScore: -2.0 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-2.0 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.3.1 -2.0 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 795 Lines: 22 * Stephane Eranian wrote: > Good point about System.map! Even if /proc/kallsyms contains zero addresses, > I can still get them from /boot/System.map which is readable by everyone, I > think. It does not contain the modules addresses, but you have the core > functions, unless I am somehow mistaken. Yes. I pointed out this and some other details a couple of months ago, for a similarly motivated /proc/kallsyms obfuscation patch: http://lkml.org/lkml/2010/11/4/113 http://lkml.org/lkml/2010/11/4/145 Thanks, Ingo -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/