Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757031Ab0HIQGv (ORCPT ); Mon, 9 Aug 2010 12:06:51 -0400 Received: from astoria.ccjclearline.com ([64.235.106.9]:45873 "EHLO astoria.ccjclearline.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751998Ab0HIQGt (ORCPT ); Mon, 9 Aug 2010 12:06:49 -0400 Date: Mon, 9 Aug 2010 12:06:43 -0400 (EDT) From: "Robert P. J. Day" X-X-Sender: rpjday@lynx To: Jon Masters cc: Linux Kernel Mailing List Subject: Re: why can't i use gdb to dump module variables anymore? In-Reply-To: <7C33277E-D90E-4459-8580-59C5EFB2D66D@jonmasters.org> Message-ID: References: <7C33277E-D90E-4459-8580-59C5EFB2D66D@jonmasters.org> User-Agent: Alpine 2.00 (DEB 1167 2008-08-23) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - astoria.ccjclearline.com X-AntiAbuse: Original Domain - vger.kernel.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - crashcourse.ca X-Source: X-Source-Args: X-Source-Dir: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1875 Lines: 49 On Sun, 8 Aug 2010, Jon Masters wrote: > > On Jul 8, 2010, at 7:51 AM, Robert P. J. Day wrote: > > > > (gdb) p rpjday_2 > > Cannot access memory at address 0xffffffffa007c0b4 > > (gdb) p rpjday_3 > > Cannot access memory at address 0xffffffffa007c0b8 > > Did you ever get a reply to this one? Were you trying to do this > locally, by loading a kernel core or using kgdb? never figured out what was happening here, used to work just fine for simple gdb debugging of the kernel; nowadays (at least on ubuntu), not so much. anyway, i'm in bahstahn for linuxcon, staying at the onyx hotel for first 3 days. my girlfriend is doing a bofs session: http://events.linuxfoundation.org/linuxcon2010/mckinnon anyway, regarding gdb, this was based on a column i wrote last year: http://www.linux.com/learn/linux-training/33991-the-kernel-newbie-corner-kernel-and-module-debugging-with-gdb where it worked just fine -- it's the technique described in LDD3. but now, on ubuntu 10.04, weirdness. i haven't looked at it closely again for a while, but if you have any ideas, i'm open to suggestions. maybe some odd security/selinux/??? setting? rday -- ======================================================================== Robert P. J. Day Waterloo, Ontario, CANADA Top-notch, inexpensive online Linux/OSS/kernel courses http://crashcourse.ca Twitter: http://twitter.com/rpjday LinkedIn: http://ca.linkedin.com/in/rpjday ======================================================================== -- 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/