.
Thread 3 (Thread 0x7f65dbfff700 (LWP 2448)):
#0  0x00007f65e81ba9e3 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
        resultvar = <optimized out>
        oldtype = 0
        result = <optimized out>
#1  0x00007f65e8d24e84 in g_main_context_poll (n_fds=3, fds=0x7f65d40010c0, timeout=-1, context=0x7f65dc00e880, priority=<optimized out>) at /build/buildd/glib2.0-2.33.14/./glib/gmain.c:3584
        poll_func = 0x7f65e8d32f70 <g_poll>
#2  g_main_context_iterate (context=0x7f65dc00e880, block=block@entry=1, dispatch=dispatch@entry=1, self=<error reading variable: Unhandled dwarf expression opcode 0xfa>) at /build/buildd/glib2.0-2.33.14/./glib/gmain.c:3285
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 3
        allocated_nfds = <optimized out>
        fds = 0x7f65d40010c0
#3  0x00007f65e8d252e2 in g_main_loop_run (loop=0x7f65dc00e810) at /build/buildd/glib2.0-2.33.14/./glib/gmain.c:3484
        __PRETTY_FUNCTION__ = "g_main_loop_run"
#4  0x00007f65e688a7b6 in gdbus_shared_thread_func (user_data=0x7f65dc00e850) at /build/buildd/glib2.0-2.33.14/./gio/gdbusprivate.c:277
        data = 0x7f65dc00e850
#5  0x00007f65e8d48985 in g_thread_proxy (data=0x7f65dc00bd40) at /build/buildd/glib2.0-2.33.14/./glib/gthread.c:797
        thread = 0x7f65dc00bd40
#6  0x00007f65e8498e9a in start_thread (arg=0x7f65dbfff700) at pthread_create.c:308
        __res = <optimized out>
        pd = 0x7f65dbfff700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, 9061909751164092393, 140075535370480, 140075459410368, 0, 3, -9004409691733180439, -9004509320950792215}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#7  0x00007f65e81c639d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
No locals.
#8  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 2 (Thread 0x7f65e0871700 (LWP 2447)):
#0  0x00007f65e81ba9e3 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
        resultvar = <optimized out>
        oldtype = 0
        result = <optimized out>
#1  0x00007f65e8d24e84 in g_main_context_poll (n_fds=1, fds=0x7f65dc0010e0, timeout=-1, context=0x7f65ecd1dec0, priority=<optimized out>) at /build/buildd/glib2.0-2.33.14/./glib/gmain.c:3584
        poll_func = 0x7f65e8d32f70 <g_poll>
#2  g_main_context_iterate (context=context@entry=0x7f65ecd1dec0, block=block@entry=1, dispatch=dispatch@entry=1, self=<error reading variable: Unhandled dwarf expression opcode 0xfa>) at /build/buildd/glib2.0-2.33.14/./glib/gmain.c:3285
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 1
        allocated_nfds = <optimized out>
        fds = 0x7f65dc0010e0
#3  0x00007f65e8d24fa4 in g_main_context_iteration (context=context@entry=0x7f65ecd1dec0, may_block=may_block@entry=1) at /build/buildd/glib2.0-2.33.14/./glib/gmain.c:3351
        retval = <optimized out>
#4  0x00007f65e087835d in dconf_gdbus_worker_thread (user_data=0x7f65ecd1dec0) at dconf-gdbus-thread.c:81
        context = 0x7f65ecd1dec0
#5  0x00007f65e8d48985 in g_thread_proxy (data=0x7f65ecd13e30) at /build/buildd/glib2.0-2.33.14/./glib/gthread.c:797
        thread = 0x7f65ecd13e30
#6  0x00007f65e8498e9a in start_thread (arg=0x7f65e0871700) at pthread_create.c:308
        __res = <optimized out>
        pd = 0x7f65e0871700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, 9061909751164092393, 140733728040784, 140075535374784, 0, 3, -9004490169756631063, -9004509320950792215}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#7  0x00007f65e81c639d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
No locals.
#8  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 1 (Thread 0x7f65eb910980 (LWP 2446)):
#0  g_type_check_instance_cast (type_instance=0x7f65ed217640, type_instance@entry=<error reading variable: Cannot access memory at address 0x7fff1fde18b8>, iface_type=140075745324288, iface_type@entry=<error reading variable: Cannot access memory at address 0x7fff1fde18b8>) at /build/buildd/glib2.0-2.33.14/./gobject/gtype.c:3997
        node = 0x7fff1fde1a90
        iface = 0x0
        is_instantiatable = <optimized out>
        check = <optimized out>
Cannot access memory at address 0x7fff1fde18b8