.
Thread 3 (Thread 0x7fd99aa7e700 (LWP 7447)):
#0  0x00007fd9aa698b03 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  0x00007fd9ab44db84 in g_main_context_poll (n_fds=1, fds=0x7fd9940010e0, timeout=-1, context=0x1e65e10, priority=<optimized out>) at /build/buildd/glib2.0-2.33.3/./glib/gmain.c:3440
        poll_func = 0x7fd9ab45ba10 <g_poll>
#2  g_main_context_iterate (context=0x1e65e10, block=block@entry=1, dispatch=dispatch@entry=1, self=<error reading variable: Unhandled dwarf expression opcode 0xfa>) at /build/buildd/glib2.0-2.33.3/./glib/gmain.c:3141
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 1
        allocated_nfds = <optimized out>
        fds = 0x7fd9940010e0
#3  0x00007fd9ab44dfe2 in g_main_loop_run (loop=0x7fd9940010c0) at /build/buildd/glib2.0-2.33.3/./glib/gmain.c:3340
        __PRETTY_FUNCTION__ = "g_main_loop_run"
#4  0x00007fd99afa5b7b in dconf_context_thread (data=0x1e65e10) at dconfcontext.c:11
        context = 0x1e65e10
        loop = <optimized out>
        __PRETTY_FUNCTION__ = "dconf_context_thread"
#5  0x00007fd9ab470865 in g_thread_proxy (data=0x1d20b20) at /build/buildd/glib2.0-2.33.3/./glib/gthread.c:801
        thread = 0x1d20b20
#6  0x00007fd9aa976e9a in start_thread (arg=0x7fd99aa7e700) at pthread_create.c:308
        __res = <optimized out>
        pd = 0x7fd99aa7e700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, 1829021676691005160, 140737079545632, 140572579326400, 0, 3, -1814166932026810648, -1814202256587219224}, 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  0x00007fd9aa6a44bd 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 0x7fd99a27d700 (LWP 7448)):
#0  0x00007fd9aa698b03 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  0x00007fd9ab44db84 in g_main_context_poll (n_fds=3, fds=0x7fd98c0010c0, timeout=-1, context=0x7fd99400d740, priority=<optimized out>) at /build/buildd/glib2.0-2.33.3/./glib/gmain.c:3440
        poll_func = 0x7fd9ab45ba10 <g_poll>
#2  g_main_context_iterate (context=0x7fd99400d740, block=block@entry=1, dispatch=dispatch@entry=1, self=<error reading variable: Unhandled dwarf expression opcode 0xfa>) at /build/buildd/glib2.0-2.33.3/./glib/gmain.c:3141
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 3
        allocated_nfds = <optimized out>
        fds = 0x7fd98c0010c0
#3  0x00007fd9ab44dfe2 in g_main_loop_run (loop=0x7fd994005b00) at /build/buildd/glib2.0-2.33.3/./glib/gmain.c:3340
        __PRETTY_FUNCTION__ = "g_main_loop_run"
#4  0x00007fd9a9608886 in gdbus_shared_thread_func (user_data=0x7fd99400afa0) at /build/buildd/glib2.0-2.33.3/./gio/gdbusprivate.c:277
        data = 0x7fd99400afa0
#5  0x00007fd9ab470865 in g_thread_proxy (data=0x7fd994009940) at /build/buildd/glib2.0-2.33.3/./glib/gthread.c:801
        thread = 0x7fd994009940
#6  0x00007fd9aa976e9a in start_thread (arg=0x7fd99a27d700) at pthread_create.c:308
        __res = <optimized out>
        pd = 0x7fd99a27d700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, 1829021676691005160, 140572579322096, 140572570933696, 0, 3, -1814165831978311960, -1814202256587219224}, 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  0x00007fd9aa6a44bd 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 0x7fd9ad74f980 (LWP 7446)):
#0  __memcpy_ssse3_back () at ../sysdeps/x86_64/multiarch/memcpy-ssse3-back.S:1528
No locals.
#1  0x000000000042bed8 in ?? ()
No symbol table info available.
#2  0x000000000042cb6d in app_init ()
No symbol table info available.
#3  0x000000000041be19 in main ()
No symbol table info available.