From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 10575 invoked by alias); 13 Jun 2005 15:19:13 -0000 Mailing-List: contact gdb-help@sources.redhat.com; run by ezmlm Precedence: bulk List-Subscribe: List-Archive: List-Post: List-Help: , Sender: gdb-owner@sources.redhat.com Received: (qmail 10544 invoked by uid 22791); 13 Jun 2005 15:19:07 -0000 Received: from ext-ch1gw-7.online-age.net (HELO ext-ch1gw-7.online-age.net) (64.37.194.15) by sourceware.org (qpsmtpd/0.30-dev) with ESMTP; Mon, 13 Jun 2005 15:19:07 +0000 Received: from int-ch1gw-3.online-age.net (int-ch1gw-3 [3.159.232.67]) by ext-ch1gw-7.online-age.net (8.12.11/8.12.11/20050527-JWF) with ESMTP id j5DFI0nl006134; Mon, 13 Jun 2005 11:18:00 -0400 Received: from uswaumsxb4medge.am.med.ge.com (localhost [127.0.0.1]) by int-ch1gw-3.online-age.net (8.12.9/8.12.3/990426-RLH) with ESMTP id j5DFHxNE008260; Mon, 13 Jun 2005 11:18:00 -0400 (EDT) Received: from USWAUMSXBHMEDGE.am.med.ge.com (uswaumsxbhmedge.med.ge.com [3.57.24.134]) by uswaumsxb4medge.am.med.ge.com with SMTP (Microsoft Exchange Internet Mail Service Version 5.5.2656.59) id MRM1QSJS; Mon, 13 Jun 2005 10:17:59 -0500 Received: from gsao.gso.med.ge.com (uswaucs03.med.ge.com [3.57.24.237]) by USWAUMSXBHMEDGE.am.med.ge.com with SMTP (Microsoft Exchange Internet Mail Service Version 5.5.2656.59) id M6DQ9535; Mon, 13 Jun 2005 10:17:59 -0500 Received: from godzilla (IDENT:12539@godzilla [3.70.204.208]) by gsao.gso.med.ge.com (8.12.10+Sun/8.12.10) with ESMTP id j5DFImmk008384; Mon, 13 Jun 2005 10:18:48 -0500 (CDT) Date: Mon, 13 Jun 2005 15:19:00 -0000 From: Rich Coe To: "H. J. Lu" Cc: gdb@sources.redhat.com Subject: Re: no stack trace with 2.6.11 and gdb 6.3 Message-ID: <20050613101629.4f54fde1@godzilla> In-Reply-To: <20050611022148.GA14914@lucon.org> References: <20050610193720.GA24094@nevyn.them.org> <200506102115.QAA91634@morpheus> <20050611005113.GA29491@nevyn.them.org> <20050611022148.GA14914@lucon.org> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-SW-Source: 2005-06/txt/msg00110.txt.bz2 On Fri, 10 Jun 2005 19:21:48 -0700 "H. J. Lu" wrote: > On Fri, Jun 10, 2005 at 08:51:13PM -0400, Daniel Jacobowitz wrote: > > > > No, I told you that I expected it to work in CVS. If it does not, then > > someone needs to reproduce your problem using an unpatched GDB and > > debug it. I do not have a Red Hat x86_64 system on which to reproduce > > it, but I may be able to elsewhere - if I have time. > > Gdb should support vDSO on Linux 2.6.11/x86_64 with this patch: > > http://sources.redhat.com/ml/gdb/2005-06/msg00095.html > > If it doesn't work, I will be interested to know. > H.J. The patch makes it work only if you start the program from the gdb command line. As I said in my original post: > After reviewing the patch made to bug#146087, I found that I can get > a valid traceback if I issue the following request: > > add-symbol-file-from-memory 0xffffe000 > The interesting part is that this also failing on x86 systems, not just > x86_64. > > If you start an application from within gdb on the command line, > the following line is printed out: > Loaded system supplied DSO at 0xffffe000 -- Rich Coe richard.coe@med.ge.com General Electric Healthcare Technologies Global Software Platforms, Computer Technology Team