.
Thread 2 (process 18154):
#0  0x00007fab53899283 in *__GI___poll (fds=<value optimized out>, 
    nfds=<value optimized out>, timeout=<value optimized out>)
    at ../sysdeps/unix/sysv/linux/poll.c:87
	resultvar = 18446744073709551100
	oldtype = 0
	result = <value optimized out>
#1  0x000000000234f330 in ?? ()
No symbol table info available.
#2  0x00000000ffffffff in ?? ()
No symbol table info available.
#3  0x0000000000000001 in ?? ()
No symbol table info available.
#4  0x000000000234f330 in ?? ()
No symbol table info available.
#5  0x0000000000000001 in ?? ()
No symbol table info available.
#6  0x00007fab53da9170 in g_main_context_iterate (context=0x234f370, 
    block=<value optimized out>, dispatch=1)
    at /build/buildd/glib2.0-2.28.0/glib/gmain.c:4319
	max_priority = 2147483647
	timeout = -1
	some_ready = <value optimized out>
	nfds = 1
	allocated_nfds = <value optimized out>
	fds = (GPollFD *) 0x234f330
#7  0x00007fab53147000 in ?? ()
No symbol table info available.
#8  0x00007fab540537a8 in test_run_name () from /lib/libglib-2.0.so.0
No symbol table info available.
#9  0x0000000153b52d70 in ?? ()
No symbol table info available.
#10 0x00007fab540537e0 in ?? () from /lib/libglib-2.0.so.0
No symbol table info available.
#11 0x000000000234f35c in ?? ()
No symbol table info available.
#12 0x7fffffffffffffff in ?? ()
No symbol table info available.
#13 0x0000000000000003 in ?? ()
No symbol table info available.
#14 0x000000000234f350 in ?? ()
No symbol table info available.
#15 0x00007fab53b51390 in __pthread_mutex_lock_full (mutex=0x234f330)
    at pthread_mutex_lock.c:297
	kind = -516
	oldval = <value optimized out>
	id = -1
	__PRETTY_FUNCTION__ = "__pthread_mutex_lock_full"
#16 0x00007fab54053ea0 in ?? () from /lib/libglib-2.0.so.0
No symbol table info available.
#17 0x000000000234f35c in ?? ()
No symbol table info available.
#18 0x00007fab53b51390 in __pthread_mutex_lock_full (mutex=0x7fab540537e0)
    at pthread_mutex_lock.c:297
	kind = -516
	oldval = <value optimized out>
	id = 37024604
	__PRETTY_FUNCTION__ = "__pthread_mutex_lock_full"
#19 0x0000000000000003 in ?? ()
No symbol table info available.
#20 0x00007fab53da9a4a in g_main_loop_run (loop=0x3)
    at /build/buildd/glib2.0-2.28.0/glib/gmain.c:4319
	__PRETTY_FUNCTION__ = "g_main_loop_run"
#21 0x00007fab531fbb34 in gdbus_shared_thread_func (
    data=<value optimized out>)
    at /build/buildd/glib2.0-2.28.0/gio/gdbusprivate.c:471
No locals.
#22 0x00007fab53dd0314 in g_thread_create_proxy (data=0x234f450)
    at /build/buildd/glib2.0-2.28.0/glib/gthread.c:1042
	thread = (GRealThread *) 0x234f450
	__PRETTY_FUNCTION__ = "g_thread_create_proxy"
#23 0x00007fab53b4ed8c in start_thread (arg=0x7fab50343700)
    at allocatestack.c:304
	pd = (struct pthread *) 0x7fab50343700
	now = <value optimized out>
	unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140373761734400, 
        8641176089268330773, 140734057961712, 140373761735104, 0, 3, 
        -8593642460594298603, -8593650155040530155}, mask_was_saved = 0}}, 
  priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, 
      canceltype = 0}}}
	not_first_call = 0
	robust = <value optimized out>
	sp = <value optimized out>
	freesize = <value optimized out>
	__PRETTY_FUNCTION__ = "start_thread"
#24 0x00007fab538a639d in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
No locals.
#25 0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 1 (process 18152):
#0  cache_ap_mac (self=0x2343900) at connectivity-networkmanager.c:101
	devices = (const GPtrArray *) 0x0
	i = <value optimized out>
#1  0x00000000004072bf in geoclue_networkmanager_init (self=0x2343900)
    at connectivity-networkmanager.c:101
	error = (GError *) 0x235fe60
	proxy = (DBusGProxy *) 0x233fa50
	state = NM_STATE_UNKNOWN
#2  0x00007fab54087973 in g_type_create_instance (type=<value optimized out>)
    at /build/buildd/glib2.0-2.28.0/gobject/gtype.c:1766
	node = (TypeNode *) 0x235c1d0
	instance = (GTypeInstance *) 0x2343900
	class = <value optimized out>
	i = <value optimized out>
	total_size = <value optimized out>
#3  0x00007fab5406574c in g_object_constructor (type=<value optimized out>, 
    n_construct_properties=0, construct_params=0x0)
    at /build/buildd/glib2.0-2.28.0/gobject/gobject.c:2386
	object = <value optimized out>
#4  0x00007fab54068971 in g_object_newv (object_type=37077456, 
    n_parameters=0, parameters=0x0)
    at /build/buildd/glib2.0-2.28.0/gobject/gobject.c:2386
	cparams = Unhandled dwarf expression opcode 0x9f