.
Thread 4 (LWP 1087):
#0  0x00007ffb01aeb3cd in poll () at ../sysdeps/unix/syscall-template.S:81
No locals.
#1  0x00007ffb028dc15c in g_main_context_poll (n_fds=1, fds=0x7ffaf00008c0, timeout=-1, context=0xedf990, priority=<optimized out>) at /build/buildd/glib2.0-2.35.8/./glib/gmain.c:3995
        poll_func = 0x7ffb028ea550 <g_poll>
#2  g_main_context_iterate (context=context@entry=0xedf990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.35.8/./glib/gmain.c:3696
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        allocated_nfds = <optimized out>
        fds = 0x7ffaf00008c0
        nfds = 1
#3  0x00007ffb028dc284 in g_main_context_iteration (context=0xedf990, may_block=may_block@entry=1) at /build/buildd/glib2.0-2.35.8/./glib/gmain.c:3762
        retval = <optimized out>
#4  0x00007ffb028dc2e1 in glib_worker_main (data=<optimized out>) at /build/buildd/glib2.0-2.35.8/./glib/gmain.c:5427
No locals.
#5  0x00007ffb02900075 in g_thread_proxy (data=0xee0630) at /build/buildd/glib2.0-2.35.8/./glib/gthread.c:798
        thread = 0xee0630
#6  0x00007ffb01dcdf8e in start_thread (arg=0x7ffaffd38700) at pthread_create.c:311
        __res = <optimized out>
        pd = 0x7ffaffd38700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140716010604288, 2007824555962648200, 0, 140716067422304, 140734552082640, 4096, -2006135461313657208, -2005444947563788664}, 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  0x00007ffb01af7e1d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113
No locals.
.
Thread 3 (LWP 1092):
#0  0x00007ffb01aeb3cd in poll () at ../sysdeps/unix/syscall-template.S:81
No locals.
#1  0x00007ffb028dc15c in g_main_context_poll (n_fds=3, fds=0x7ffaf40010c0, timeout=-1, context=0x7ffaf800cf00, priority=<optimized out>) at /build/buildd/glib2.0-2.35.8/./glib/gmain.c:3995
        poll_func = 0x7ffb028ea550 <g_poll>
#2  g_main_context_iterate (context=0x7ffaf800cf00, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.35.8/./glib/gmain.c:3696
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        allocated_nfds = <optimized out>
        fds = 0x7ffaf40010c0
        nfds = 3
#3  0x00007ffb028dc63a in g_main_loop_run (loop=0x7ffaf800c8e0) at /build/buildd/glib2.0-2.35.8/./glib/gmain.c:3895
        __PRETTY_FUNCTION__ = "g_main_loop_run"
#4  0x00007ffb02eb8726 in gdbus_shared_thread_func (user_data=0x7ffaf800ced0) at /build/buildd/glib2.0-2.35.8/./gio/gdbusprivate.c:278
        data = 0x7ffaf800ced0
#5  0x00007ffb02900075 in g_thread_proxy (data=0x7ffaf8003f70) at /build/buildd/glib2.0-2.35.8/./glib/gthread.c:798
        thread = 0x7ffaf8003f70
#6  0x00007ffb01dcdf8e in start_thread (arg=0x7ffaff537700) at pthread_create.c:311
        __res = <optimized out>
        pd = 0x7ffaff537700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140716002211584, 2007824555962648200, 0, 140716067422304, 140716018994208, 4096, -2006134361265158520, -2005444947563788664}, 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  0x00007ffb01af7e1d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113
No locals.
.
Thread 2 (LWP 1084):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
No locals.
#1  0x00007ffb0291bbf5 in g_cond_wait_until (cond=cond@entry=0xee8938, mutex=mutex@entry=0xee8930, end_time=end_time@entry=32484842) at /build/buildd/glib2.0-2.35.8/./glib/gthread-posix.c:859
        ts = {tv_sec = 32, tv_nsec = 484842000}
        status = <optimized out>
#2  0x00007ffb028b1bb1 in g_async_queue_pop_intern_unlocked (queue=queue@entry=0xee8930, wait=wait@entry=1, end_time=end_time@entry=32484842) at /build/buildd/glib2.0-2.35.8/./glib/gasyncqueue.c:424
        retval = <optimized out>
        __PRETTY_FUNCTION__ = "g_async_queue_pop_intern_unlocked"
#3  0x00007ffb028b21fa in g_async_queue_timeout_pop (queue=0xee8930, timeout=timeout@entry=15000000) at /build/buildd/glib2.0-2.35.8/./glib/gasyncqueue.c:545
        end_time = 32484842
        retval = <optimized out>
#4  0x00007ffb02900872 in g_thread_pool_wait_for_new_pool () at /build/buildd/glib2.0-2.35.8/./glib/gthreadpool.c:169
        pool = <optimized out>
        local_max_idle_time = 15000
        local_wakeup_thread_serial = <optimized out>
        local_max_unused_threads = 2
        last_wakeup_thread_serial = 0
        have_relayed_thread_marker = 0
#5  g_thread_pool_thread_proxy (data=<optimized out>) at /build/buildd/glib2.0-2.35.8/./glib/gthreadpool.c:366
        free_pool = <optimized out>
        task = 0x2
        pool = <optimized out>
#6  0x00007ffb02900075 in g_thread_proxy (data=0xee05e0) at /build/buildd/glib2.0-2.35.8/./glib/gthread.c:798
        thread = 0xee05e0
#7  0x00007ffb01dcdf8e in start_thread (arg=0x7ffb00539700) at pthread_create.c:311
        __res = <optimized out>
        pd = 0x7ffb00539700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140716018996992, 2007824555962648200, 0, 140716067422304, 140734552083616, 4096, -2005446070207396216, -2005444947563788664}, 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"
#8  0x00007ffb01af7e1d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113
No locals.
.
Thread 1 (LWP 1075):
#0  process_watch_cb (pid=1317, pid@entry=<error reading variable: value has been optimized out>, status=0, status@entry=<error reading variable: value has been optimized out>, data=0xee0770, data@entry=<error reading variable: value has been optimized out>) at process.c:130
        process = 0xee0770
#1  0x00007ffb028d8c74 in g_child_watch_dispatch (source=source@entry=0xf00780, callback=<optimized out>, user_data=<optimized out>) at /build/buildd/glib2.0-2.35.8/./glib/gmain.c:5002
        child_watch_source = 0xf00780
        child_watch_callback = <optimized out>
#2  0x00007ffb028dbe85 in g_main_dispatch (context=0xedcfc0) at /build/buildd/glib2.0-2.35.8/./glib/gmain.c:3054
        dispatch = 0x7ffb028d8c60 <g_child_watch_dispatch>
        was_in_call = 0
        user_data = 0xee0770
        callback = 0x40f3e0 <process_watch_cb>
        cb_funcs = 0x7ffb02b8da00 <g_source_callback_funcs>
        cb_data = 0xf006e0
        current_source_link = {data = 0xf00780, next = 0x0}
        need_destroy = <optimized out>
        source = 0xf00780
        current = 0xedb400
        i = <optimized out>
#3  g_main_context_dispatch (context=context@entry=0xedcfc0) at /build/buildd/glib2.0-2.35.8/./glib/gmain.c:3630
No locals.
#4  0x00007ffb028dc1c8 in g_main_context_iterate (context=0xedcfc0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.35.8/./glib/gmain.c:3701
        max_priority = 0
        timeout = 0
        some_ready = 1
        allocated_nfds = <optimized out>
        fds = 0xf05900
        nfds = <optimized out>
#5  0x00007ffb028dc63a in g_main_loop_run (loop=0xedd120) at /build/buildd/glib2.0-2.35.8/./glib/gmain.c:3895
        __PRETTY_FUNCTION__ = "g_main_loop_run"
#6  0x0000000000406d4b in main (argc=1, argv=0x7fff50fc1278) at lightdm.c:1221
        pid_file = <optimized out>
        option_context = <optimized out>
        result = <optimized out>
        groups = 0xeea450
        i = <optimized out>
        dir = <optimized out>
        n_seats = <optimized out>
        explicit_config = <optimized out>
        test_mode = 0
        pid_path = 0x41db2a "ghtdm"
        xsessions_dir = 0x0
        remote_sessions_dir = 0x0
        xgreeters_dir = 0x0
        config_dir = <optimized out>
        log_dir = 0x0
        run_dir = 0x0
        cache_dir = 0x0
        default_log_dir = <optimized out>
        default_run_dir = 0xedcf50 "cache-directory"
        default_cache_dir = 0xedcf70 "xsessions-directory"
        show_version = 0
        options = {{long_name = 0x41f86c "anager", short_name = 99 'c', flags = 0, arg = G_OPTION_ARG_STRING, arg_data = 0x6289e8 <config_path>, description = 0x41db74 "g", arg_description = 0x41db8b "ges"}, {long_name = 0x41db90 "est-mode", short_name = 100 'd', flags = 0, arg = G_OPTION_ARG_NONE, arg_data = 0x6289f0 <debug>, description = 0x41db96 "de", arg_description = 0x0}, {long_name = 0x41dbaf " PID into", short_name = 0 '\000', flags = 0, arg = G_OPTION_ARG_NONE, arg_data = 0x7fff50fc0ed0, description = 0x41e720 "ng things that require root access", arg_description = 0x0}, {long_name = 0x41dbb9 "xsessions-dir", short_name = 0 '\000', flags = 0, arg = G_OPTION_ARG_STRING, arg_data = 0x7fff50fc0ed8, description = 0x41dbc2 "-dir", arg_description = 0x41db8b "ges"}, {long_name = 0x41dbd9 "essions-dir", short_name = 0 '\000', flags = 0, arg = G_OPTION_ARG_STRING, arg_data = 0x7fff50fc0ee0, description = 0x41e768 "m", arg_description = 0x41dbe7 "reeters-dir"}, {long_name = 0x41dbf1 "r", short_name = 0 '\000', flags = 0, arg = G_OPTION_ARG_STRING, arg_data = 0x7fff50fc0ee8, description = 0x41e790 "s from", arg_description = 0x41dbe7 "reeters-dir"}, {long_name = 0x41dc05 "to write logs to", short_name = 0 '\000', flags = 0, arg = G_OPTION_ARG_STRING, arg_data = 0x7fff50fc0ef0, description = 0x41e7b8 "m", arg_description = 0x41dbe7 "reeters-dir"}, {long_name = 0x41dc13 "to", short_name = 0 '\000', flags = 0, arg = G_OPTION_ARG_STRING, arg_data = 0x7fff50fc0ef8, description = 0x41dc1b "ir", arg_description = 0x41dbe7 "reeters-dir"}, {long_name = 0x41dc36 "ersion", short_name = 0 '\000', flags = 0, arg = G_OPTION_ARG_STRING, arg_data = 0x7fff50fc0f00, description = 0x41e7e0 "", arg_description = 0x41dbe7 "reeters-dir"}, {long_name = 0x41dc3e "-session-child", short_name = 0 '\000', flags = 0, arg = G_OPTION_ARG_STRING, arg_data = 0x7fff50fc0f08, description = 0x41e808 "Run '%s --help' to see a full list of available command line options.", arg_description = 0x41dbe7 "reeters-dir"}, {long_name = 0x41dc55 "al", short_name = 118 'v', flags = 0, arg = G_OPTION_ARG_NONE, arg_data = 0x7fff50fc0ed4, description = 0x41dc48 "hild", arg_description = 0x0}, {long_name = 0x0, short_name = 0 '\000', flags = 0, arg = G_OPTION_ARG_NONE, arg_data = 0x0, description = 0x0, arg_description = 0x0}}
        error = 0x0