#0  0x000000000044ba74 in INTERNAL_OBJ (user_data=0x4542) at astobj2.c:153
153		if (AO2_MAGIC != p->priv_data.magic) {
Traceback (most recent call last):
  File "/usr/share/gdb/auto-load/usr/lib64/libgobject-2.0.so.0.3600.3-gdb.py", line 9, in <module>
    from gobject import register
  File "/usr/share/glib-2.0/gdb/gobject.py", line 3, in <module>
    import gdb.backtrace
ImportError: No module named backtrace
Traceback (most recent call last):
  File "/usr/share/gdb/auto-load/usr/lib64/libgobject-2.0.so.0.3600.3-gdb.py", line 9, in <module>
    from gobject import register
  File "/usr/share/glib-2.0/gdb/gobject.py", line 3, in <module>
    import gdb.backtrace
ImportError: No module named backtrace
#0  0x000000000044ba74 in INTERNAL_OBJ (user_data=0x4542) at astobj2.c:153
        p = 0x4522
        __PRETTY_FUNCTION__ = "INTERNAL_OBJ"
#1  0x000000000044c110 in internal_ao2_ref (user_data=0x4542, delta=1, file=0x63da74 "astobj2.c", line=548, func=0x63dd31 <__FUNCTION__.8060> "__ao2_ref") at astobj2.c:430
        obj = 0x7fbbca726638
        obj_mutex = 0x7fbc5d035cf4
        obj_rwlock = 0x7fbc5d04f7c0 <__PRETTY_FUNCTION__.34031>
        current_value = 8998
        ret = 0
        __PRETTY_FUNCTION__ = "internal_ao2_ref"
#2  0x000000000044c4c0 in __ao2_ref (user_data=0x4542, delta=1) at astobj2.c:548
        __FUNCTION__ = "__ao2_ref"
#3  0x00007fbc5cfac5c4 in sip_pvt_lock_full (pvt=0x7fbbca726638) at chan_sip.c:9004
        chan = 0x4542
        __PRETTY_FUNCTION__ = "sip_pvt_lock_full"
#4  0x00007fbc5cf96e12 in __sip_autodestruct (data=0x7fbbca726638) at chan_sip.c:4257
        p = 0x7fbbca726638
        owner = 0x265d4dc48e0
        __PRETTY_FUNCTION__ = "__sip_autodestruct"
#5  0x000000000056c21c in ast_sched_runq (con=0x1676b30) at sched.c:614
        current = 0x7fbbd4dc48e0
        when = {tv_sec = 1418686537, tv_usec = 396929}
        numevents = 0
        res = 32700
        __PRETTY_FUNCTION__ = "ast_sched_runq"
#6  0x00007fbc5d00b4b3 in do_monitor (data=0x0) at chan_sip.c:29144
        res = 0
        t = 1418686537
        reloading = 0
        __PRETTY_FUNCTION__ = "do_monitor"
#7  0x0000000000588a53 in dummy_start (data=0x48ded10) at utils.c:1192
        __cancel_buf = {__cancel_jmp_buf = {{__cancel_jmp_buf = {140445756970752, -8657673488753022872, 0, 140445756971456, 140445756970752, 0, -8657673488660748184, 8692481147838605416}, __mask_was_saved = 0}}, __pad = {0x7fbc13744e30, 0x0, 0x0, 0x0}}
        __cancel_routine = 0x4406af <ast_unregister_thread>
        __cancel_arg = 0x7fbc13745700
        __not_first_call = 0
        ret = 0x0
        a = {start_routine = 0x7fbc5d00b1cb <do_monitor>, data = 0x0, name = 0x48ded30 "do_monitor", ' ' <repeats 11 times>, "started at [29172] chan_sip.c restart_monitor()"}
#8  0x00007fbc868eadf3 in start_thread () from /lib64/libpthread.so.0
No symbol table info available.
#9  0x00007fbc87f8001d in clone () from /lib64/libc.so.6
No symbol table info available.