From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 8552 invoked by alias); 6 Sep 2007 08:39:48 -0000 Received: (qmail 8541 invoked by uid 22791); 6 Sep 2007 08:39:47 -0000 X-Spam-Check-By: sourceware.org Received: from rv-out-0910.google.com (HELO rv-out-0910.google.com) (209.85.198.188) by sourceware.org (qpsmtpd/0.31) with ESMTP; Thu, 06 Sep 2007 08:39:40 +0000 Received: by rv-out-0910.google.com with SMTP id l15so79049rvb for ; Thu, 06 Sep 2007 01:39:38 -0700 (PDT) Received: by 10.141.197.18 with SMTP id z18mr139261rvp.1189067978786; Thu, 06 Sep 2007 01:39:38 -0700 (PDT) Received: by 10.141.51.19 with HTTP; Thu, 6 Sep 2007 01:39:38 -0700 (PDT) Message-ID: <6a6ca2180709060139led36680r7132789d915f4a18@mail.gmail.com> Date: Thu, 06 Sep 2007 10:01:00 -0000 From: treul To: gdb@sources.redhat.com Subject: symbol address problem (debugging linux kernel with gdb) MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline Mailing-List: contact gdb-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: gdb-owner@sourceware.org X-SW-Source: 2007-09/txt/msg00047.txt.bz2 Hi, all I'm using virtual machine to debug linux kernel. By "nm vmlinux", I find the address of the function do_IRQ() is at 0xc0105835. But when I "b do_IRQ", gdb says "Breakpoint 2 at 0x80205835: file arch/i386/kernel/irq.c, line 55." The gap of all other normal symbols is the same - 0x3ff00000. In addition, see following: ------------------------------------------------------------------ (gdb) info symbol 0xc0105835 do_IRQ in section .text (gdb) info address do_IRQ Symbol "do_IRQ" is a function at address 0x80205835. ------------------------------------------------------------------ I don't know why... Please help me on this matter, thank you very much!! -treul