From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 19929 invoked by alias); 16 Jan 2011 08:01:09 -0000 Received: (qmail 19915 invoked by uid 22791); 16 Jan 2011 08:01:08 -0000 X-SWARE-Spam-Status: No, hits=-1.9 required=5.0 tests=AWL,BAYES_00,DKIM_SIGNED,DKIM_VALID,TW_NW,T_RP_MATCHES_RCVD X-Spam-Check-By: sourceware.org Received: from csmailer.cs.nctu.edu.tw (HELO csmailer.cs.nctu.edu.tw) (140.113.235.130) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Sun, 16 Jan 2011 08:00:58 +0000 Received: from csmailer.cs.nctu.edu.tw (localhost [127.0.0.1]) by csmailer.cs.nctu.edu.tw (Postfix) with ESMTP id 31E81D88 for ; Sun, 16 Jan 2011 16:03:29 +0800 (CST) Received: from alumni.cs.nctu.edu.tw (alumni.cs.nctu.edu.tw [140.113.235.116]) by csmailer.cs.nctu.edu.tw (Postfix) with ESMTP id 2AC13D87 for ; Sun, 16 Jan 2011 16:03:29 +0800 (CST) Received: (from chenwj@localhost) by alumni.cs.nctu.edu.tw (8.14.4/8.14.4/Submit) id p0G80uBL066442 for gdb@sourceware.org; Sun, 16 Jan 2011 16:00:56 +0800 (CST) (envelope-from chenwj) Date: Sun, 16 Jan 2011 08:01:00 -0000 From: =?utf-8?B?6Zmz6Z+L5Lu7?= To: gdb@sourceware.org Subject: Re: How to run gdb with LD_PRELOAD? Message-ID: <20110116080056.GA61509@cs.nctu.edu.tw> References: <20110115144525.GD44658@cs.nctu.edu.tw> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20110115144525.GD44658@cs.nctu.edu.tw> User-Agent: Mutt/1.5.21 (2010-09-15) Content-Transfer-Encoding: quoted-printable X-IsSubscribed: yes 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: 2011-01/txt/msg00065.txt.bz2 Hi, all A little update to my question. Here are what I do while running gdb. --------------------------------------------------------------------------- (gdb) set environment LD_PRELOAD=3D/nfs_home/chenwj/tools/lib/libdbo.so (gdb) file /nfs_home/chenwj/tools/bin/qemu-i386 (gdb) run -U LD_PRELOAD bzip2_base.i386-m32-gcc44-annotated input.source 1 --------------------------------------------------------------------------- And error below. --------------------------------------------------------------------------- Starting program: /nfs_home/chenwj/tools/bin/qemu-i386 -U LD_PRELOAD bzip2_= base.i386-m32-gcc44-annotated input.source 1 bash: open "/bin/bash" failed: Permission denied During startup program exited with code 66. ---------------------------------------------------------------------------= =20=20=20=20 If I LD_PRELOAD other .so, everything is fine. My guess is there is something in libdbo.so cause the "Permission denied". Any suggestion appreciated. Regards, chenwj --=20 Wei-Ren Chen (=E9=99=B3=E9=9F=8B=E4=BB=BB) Parallel Processing Lab, Institute of Information Science, Academia Sinica, Taiwan (R.O.C.) Tel:886-2-2788-3799 #1667