(gdb) bt full
#0  0x0f2cc948 in ?? () from /tmp/freeswitch-test/mod/mod_conference.so
No symbol table info available.
#1  0x0f2cc93c in ?? () from /tmp/freeswitch-test/mod/mod_conference.so
No symbol table info available.
#2  0x0ffa958c in switch_core_standard_on_execute (session=0x0) at switch_core.c:2063
        extension = (switch_caller_extension_t *) 0x0
        event = (switch_event_t *) 0x314f3bd0
        application_interface = (const switch_application_interface_t *) 0x0
        __FUNCTION__ = "switch_core_standard_on_execute"
#3  0x0ffaa354 in switch_core_session_run (session=0x1004b698) at switch_core.c:2371
        index = 1
        proceed = 1
        state = CS_EXECUTE
        laststate = CS_RING
        midstate = CS_EXECUTE
        endpoint_interface = (const switch_endpoint_interface_t *) 0xf7d2058
        driver_state_handler = (const switch_state_handler_table_t *) 0xf7d203c
        application_state_handler = (const switch_state_handler_table_t *) 0x0
        __PRETTY_FUNCTION__ = "switch_core_session_run"
        __FUNCTION__ = "switch_core_session_run"
#4  0x0ffab0ec in switch_core_session_thread (thread=0x1004e2a0, obj=0x1004b698) at switch_core.c:2622
        session = (switch_core_session_t *) 0x1004b698
        __FUNCTION__ = "switch_core_session_thread"
#5  0x0fe7edf4 in dummy_worker () from /tmp/freeswitch-test/lib/libapr-1.so.0
No symbol table info available.
#6  0x0fbe8a60 in start_thread () from /lib/libpthread.so.0
No symbol table info available.
#7  0x0fae0224 in clone () from /lib/libc.so.6
No symbol table info available.