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To: Daniel Jacobowitz <drow@mvista.com>
Subject: Re: thread debugging problem
Message-ID: <1063378178.3f61dd0261ba9@webmail.student.luth.se>
Date: Fri, 12 Sep 2003 14:49:00 -0000
From: Andreas Westin <andwes-8@student.luth.se>
Cc: gdb@sources.redhat.com
References: <3F60AC48.6050406@student.luth.se> <16224.44905.976029.587340@localhost.redhat.com> <1063350901.3f617275e4926@webmail.student.luth.se> <20030912143019.GA24071@nevyn.them.org>
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> On Fri, Sep 12, 2003 at 09:15:01AM +0200, Andreas Westin wrote:
> > >  > Hi,
> > >  > 
> > >  > I'm trying to debug a multithreaded program in linux, but I'm
> not
> > > able 
> > >  > to get any kind of thread info while running the program in
> gdb.
> > >  > I've tested with gdb 5.3, 5.3.91 and cvs from yesterday (10th)
> not
> > > any 
> > >  > of them works.
> > >  > info thread shows nothing and the program stops with signal 32
> when a
> > > 
> > >  > new thread starts.
> > >  > 
> > > 
> > > Hmmm, this usually indicates that there is no thread support
> > > available.  Maybe the version of the Kernel you are using has some
> > > missing pieces. How about glibc-kernheaders?
> > > 
> > > Do you get a message at gdb startu saying something about using
> > > libthread_db?
> > > 
> > >  > I'm using Trustix 2.0 with gcc 3.3 and glibc 2.3.2.
> > >  > 
> > > 
> > > Not sure what Trustix is.
> > > But those versions seem roughly ok.
> > > 
> > > Can you post a gdb session?
> > > 
> > 
> > This is the kernel installed.
> > root@labb ~# uname -a
> > Linux labb.mobilecity.nu 2.4.21-13trfirewall #1 Thu Jul 10 15:57:32
> CEST 2003 
> > i686 unknown unknown GNU/Linux
> > 
> > I have installed the glibc-devel rpms so the headers should be
> included.
> > 
> > Trustix is small firewall/gateway dist, http://www.trustix.net/
> > 
> > A sample gdb session, I do not see any message about libthread_db
> though.
> 
> Does trustix even ship /lib/libthread_db.so.1?  If not, thread
> debugging won't work.

Yes, i have libthread_db_so.1 in /lib

/Andreas