gdb with hhvm

gistfile1.txt

root@ivi:/www/b2c/public_html# gdb --args /root/dev/hhvm/hphp/hhvm/hhvm --config /etc/hhvm/server.hdf --user root --mode server -vEval.SyncGdbChunks=1 -vEval.JitNoGdb=false
GNU gdb (GDB) 7.6.1-ubuntu
Copyright (C) 2013 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /root/dev/hhvm/hphp/hhvm/hhvm...done.
(gdb) run
Starting program: /root/dev/hhvm/hphp/hhvm/hhvm --config /etc/hhvm/server.hdf --user root --mode server -vEval.SyncGdbChunks=1 -vEval.JitNoGdb=false
warning: no loadable sections found in added symbol-file system-supplied DSO at 0x7ffff7ffa000
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[New Thread 0x7fffea3ff700 (LWP 9429)]
[Thread 0x7fffea3ff700 (LWP 9429) exited]
Possible bad config node: Eval.SyncGdbChunks
[New Thread 0x7fffe33ff700 (LWP 9430)]
[New Thread 0x7fffea3ff700 (LWP 9431)]
[Thread 0x7fffe33ff700 (LWP 9430) exited]