Собственно что я не так сделал?  
(gdb) l main
3       #include "utils/m_utils.h"
4       #include <stdio.h>
5       # include <stdlib.h>
6       #include <slog.h>
7
8       int main(int argc, const char* const* argv)
9       {
10              initRnd();
11
12      //  if ( argc >= 2 )
(gdb) b 20
Breakpoint 1 at 0x8066df5: file /home/vaska/server_src/src/server/mMain.cpp, line 20.
(gdb) run
Starting program: /home/vaska/server_src/bin/server/smirnoff/smirnoff
[Thread debugging using libthread_db enabled]
Error while reading shared library symbols:
Cannot find new threads: generic error
Cannot find new threads: generic error
(gdb) where
#0  0xb7fc24d1 in _dl_debug_state () from /lib/ld-linux.so.2
#1  0xb7fb817c in ?? () from /lib/ld-linux.so.2
#2  0xb7fcf280 in _rtld_global () from /lib/ld-linux.so.2
#3  0x00000000 in ?? ()
(gdb) next
Single stepping until exit from function _dl_debug_state,
which has no line number information.
Cannot find new threads: generic error

Обошелся, к существующему процессу цепляется и на том ладно