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Date:      Sun, 18 Jan 2004 14:58:44 +0100
From:      Antoine Jacoutot <ajacoutot@lphp.org>
To:        Kris Kennaway <kris@obsecurity.org>
Cc:        freebsd-questions@freebsd.org
Subject:   Re: rpc.lockd segfault
Message-ID:  <200401181458.44948.ajacoutot@lphp.org>
In-Reply-To: <20040117220110.GB78912@xor.obsecurity.org>
References:  <200401171338.15670.ajacoutot@lphp.org> <200401172027.19927.ajacoutot@lphp.org> <20040117220110.GB78912@xor.obsecurity.org>

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On Saturday 17 January 2004 23:01, Kris Kennaway wrote:
> Unfortunately that doesn't give any information.  You'll need to
> recompile rpc.lockd with GDB debugging symbols (add -ggdb to CFLAGS).
> See the developer's handbook on the website for more information about
> debugging program failures with gdb (specifically, how to obtain a
> useful backtrace).

Well, I recompiled rpc.lockd using -ggdb and -g, but when I launch the 
following command:
$ gdb /usr/sbin/rpc.lockd
... I get:

GNU gdb 5.2.1 (FreeBSD)
Copyright 2002 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "i386-unknown-freebsd"...(no debugging symbols 
found)...

How come no debugging symbols are found ?

Here is how I compiled rpc.lockd
( CFLAGS= -g -ggdb -O -pipe ):
$ rm -Rf /usr/obj/*
$ cd /usr/src/usr.sbin/rpc.lockd
$ make clean && make obj && make depend && make all install

rm -f nlm_prot_svc.c nlm_prot.h test rpc.lockd kern.o nlm_prot_svc.o lockd.o 
lock_proc.o lockd_lock.o rpc.lockd.8.gz rpc.lockd.8.cat.gz
/usr/obj/usr/src/usr.sbin/rpc.lockd created for /usr/src/usr.sbin/rpc.lockd
rpcgen -L -C -m -o nlm_prot_svc.c /usr/include/rpcsvc/nlm_prot.x
rm -f .depend
mkdep -f .depend -a    -I. 
-I/usr/include/rpcsvc  /usr/src/usr.sbin/rpc.lockd/kern.c 
nlm_prot_svc.c /usr/src/usr.sbin/rpc.lockd/lockd.c /usr/src/usr.sbin/rpc.lockd/lock_proc.c /usr/src/usr.sbin/rpc.lockd/lockd_lock.c
echo rpc.lockd: /usr/lib/libc.a /usr/lib/librpcsvc.a /usr/lib/libutil.a 
>> .depend
cc -g -ggdb -O -pipe -march=pentium3 -I. -I/usr/include/rpcsvc  
-c /usr/src/usr.sbin/rpc.lockd/kern.c
cc -g -ggdb -O -pipe -march=pentium3 -I. -I/usr/include/rpcsvc  -c 
nlm_prot_svc.c
cc -g -ggdb -O -pipe -march=pentium3 -I. -I/usr/include/rpcsvc  
-c /usr/src/usr.sbin/rpc.lockd/lockd.c
cc -g -ggdb -O -pipe -march=pentium3 -I. -I/usr/include/rpcsvc  
-c /usr/src/usr.sbin/rpc.lockd/lock_proc.c
cc -g -ggdb -O -pipe -march=pentium3 -I. -I/usr/include/rpcsvc  
-c /usr/src/usr.sbin/rpc.lockd/lockd_lock.c
cc -g -ggdb -O -pipe -march=pentium3 -I. -I/usr/include/rpcsvc   -o rpc.lockd 
kern.o nlm_prot_svc.o lockd.o lock_proc.o lockd_lock.o -lrpcsvc -lutil
gzip -cn /usr/src/usr.sbin/rpc.lockd/rpc.lockd.8 > rpc.lockd.8.gz
install -s -o root -g wheel -m 555   rpc.lockd /usr/sbin
install -o root -g wheel -m 444 rpc.lockd.8.gz  /usr/share/man/man8
/usr/share/man/man8/lockd.8.gz -> /usr/share/man/man8/rpc.lockd.8.gz

Thanks a lot for your help.

Antoine



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