From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 10963 invoked by alias); 15 Apr 2005 13:35:52 -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 10896 invoked from network); 15 Apr 2005 13:35:36 -0000 Received: from unknown (HELO cycloeastern.com) (68.184.90.205) by sourceware.org with SMTP; 15 Apr 2005 13:35:36 -0000 Received: (from pras@localhost) by cycloeastern.com (8.11.6/8.11.6) id j3FEB9226235 for gdb@sources.redhat.com; Fri, 15 Apr 2005 10:11:09 -0400 Date: Fri, 15 Apr 2005 13:35:00 -0000 From: pras@cycloeastern.com To: gdb@sources.redhat.com Subject: Re: GDB problem on RH AS/Clone(). Plz help. Message-ID: <20050415141108.GA26214@cycloeastern.com> References: <20050413151816.GA13759@cycloeastern.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20050413151816.GA13759@cycloeastern.com> User-Agent: Mutt/1.4.1i X-SW-Source: 2005-04/txt/msg00098.txt.bz2 Bump ... Can somebody please guide me with this clone() issue in gdb or am I on the wrong mailing list? On Wed, Apr 13, 2005 at 11:18:16AM -0400, pras@cycloeastern.com wrote: > All, > > This is my first email to this list. > > I work for a company in that has started using Linux for one of its projects > that has traditionally in the past been running on all other big iron *nixes. > > We just got our first build on RH Enterprise Linux AS release 3 (Taroon Update 4), > and gdb attempts fail miserably. > > Background info: > > The product is written in C/C++ and is compiled with gcc 3.2.3 > The gdb version is as follows: > GNU gdb Red Hat Linux (6.1post-1.20040607.52rh) > > I am able to attach to a process and see the stack using backtrace or bt. frame command > works and even break command works. > > > When I try to do a 'cont', the server process which is supposed to execute continuously exists normally. > > This is what I see > > (gdb) cont > Continuing. > [New Thread -1245635664 (LWP 8226)] > [Thread -1220756560 (LWP 7953) exited] > > Program exited normally. > (gdb) > > The program is multithreaded and it fails. People at my local LUG suggested that I try to look up problems with > clone() system call and GDB. They suggested using PTHREADS could solve the problem. We DO use pthreads and here > is the stack(i.e. backtrace). I have set a break point on clone(). Shortly after the program just exits. > > #0 0x0365e9d0 in clone () from /lib/tls/libc.so.6 > #1 0x0040a8d7 in do_clone () from /lib/tls/libpthread.so.0 > #2 0x0040a526 in create_thread () from /lib/tls/libpthread.so.0 > #3 0x00409f87 in pthread_create@@GLIBC_2.1 () from /lib/tls/libpthread.so.0 > #4 0x0040a01c in pthread_create@GLIBC_2.0 () from /lib/tls/libpthread.so.0 > #5 0x004a9f3a in VISThread::_create_thread () from /usr/BDP/lib/libvport_r.so > #6 0x004aa0bc in VISThread::run () from /usr/BDP/lib/libvport_r.so > #7 0x0142a588 in VISManager::cleanup () from /usr/BDP/lib/liborb_r.so > #8 0x0142b063 in VISManager::sig_handler () from /usr/BDP/lib/liborb_r.so > #9 0x0142b4a1 in VISThreadSignal::begin () from /usr/BDP/lib/liborb_r.so > #10 0x004a8749 in VISThread::_start () from /usr/BDP/lib/libvport_r.so > #11 0x00409dec in start_thread () from /lib/tls/libpthread.so.0 > #12 0x0365ea2a in clone () from /lib/tls/libc.so.6 > > > I downloaded 6.3 gdb and compiled it with no options. GDB failed again under that. Please let me know what can be done. > > Do you guys know what might be going wrong ? > > -- > ________________________________________________________________________ > Prasanna Subash | WARNING TO ALL PERSONNEL: Firings will > pras@cycloeastern.com | continue until morale improves. > | > | > ________________________________________________________________________ -- ________________________________________________________________________ Prasanna Subash | The only recomendation is "dont". - Alan pras@cycloeastern.com | Cox giving some recommendations for | binary-only drivers | ________________________________________________________________________