From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754726AbaCMXMm (ORCPT ); Thu, 13 Mar 2014 19:12:42 -0400 Received: from mx1.redhat.com ([209.132.183.28]:35763 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753103AbaCMXMk (ORCPT ); Thu, 13 Mar 2014 19:12:40 -0400 Date: Thu, 13 Mar 2014 19:12:27 -0400 From: Dave Jones To: Linus Torvalds Cc: Sasha Levin , Linux Kernel Mailing List , keescook@chromium.org Subject: Re: [RFC] improve_stack: make stack dump output useful again Message-ID: <20140313231227.GA32178@redhat.com> Mail-Followup-To: Dave Jones , Linus Torvalds , Sasha Levin , Linux Kernel Mailing List , keescook@chromium.org References: <1393114777-21588-1-git-send-email-sasha.levin@oracle.com> <5321CBDA.1060705@oracle.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 On Thu, Mar 13, 2014 at 03:03:41PM -0700, Linus Torvalds wrote: > You need to look at the *symbol* number. In this output: > > [] do_one_initcall+0xc2/0x1e0 > > that "ffffffff810020c2" is crap, and is going away. The address that > is meaningful and valid is the "do_one_initcall+0xc2" part. > > *That* is the part you'd use to parse in user space. > > Try it today with the CONFIG_RANDOMIZE_BASE option to see. Using the > hex number doesn't *work*. That reminds me, perf top is still busted when this option is enabled. Dave