.
Thread 3 (Thread 0x7fce10528700 (LWP 2874)):
#0  0x00007fce159c8951 in __GI___poll (fds=0x55b37260fd10, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
        resultvar = 18446744073709551100
        sc_cancel_oldtype = 0
#1  0x00007fce15f0a169 in g_main_context_poll (priority=<optimized out>, n_fds=1, fds=0x55b37260fd10, timeout=<optimized out>, context=0x55b372638760) at ../../../../glib/gmain.c:4187
        ret = <optimized out>
        errsv = <optimized out>
        poll_func = 0x7fce15f19640 <g_poll>
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 1
        allocated_nfds = 1
        fds = 0x55b37260fd10
#2  0x00007fce15f0a169 in g_main_context_iterate (context=context@entry=0x55b372638760, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../../../../glib/gmain.c:3881
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 1
        allocated_nfds = 1
        fds = 0x55b37260fd10
#3  0x00007fce15f0a27c in g_main_context_iteration (context=0x55b372638760, may_block=may_block@entry=1) at ../../../../glib/gmain.c:3947
        retval = <optimized out>
#4  0x00007fce15f0a2c1 in glib_worker_main (data=<optimized out>) at ../../../../glib/gmain.c:5742
#5  0x00007fce15f31645 in g_thread_proxy (data=0x55b372638c00) at ../../../../glib/gthread.c:784
        thread = 0x55b372638c00
#6  0x00007fce15ca77fc in start_thread (arg=0x7fce10528700) at pthread_create.c:465
        pd = 0x7fce10528700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140523013834496, -7854264217586426320, 140728799671006, 140728799671007, 140523013834496, 140523013835200, 7826179636803608112, 7826174070343540272}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#7  0x00007fce159d4b5f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
.
Thread 2 (Thread 0x7fce0fd27700 (LWP 2877)):
#0  0x00007fce159c8951 in __GI___poll (fds=0x55b37261a1e0, nfds=3, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
        resultvar = 18446744073709551100
        sc_cancel_oldtype = 0
#1  0x00007fce15f0a169 in g_main_context_poll (priority=<optimized out>, n_fds=3, fds=0x55b37261a1e0, timeout=<optimized out>, context=0x55b372646380) at ../../../../glib/gmain.c:4187
        ret = <optimized out>
        errsv = <optimized out>
        poll_func = 0x7fce15f19640 <g_poll>
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 3
        allocated_nfds = 3
        fds = 0x55b37261a1e0
#2  0x00007fce15f0a169 in g_main_context_iterate (context=0x55b372646380, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../../../../glib/gmain.c:3881
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 3
        allocated_nfds = 3
        fds = 0x55b37261a1e0
#3  0x00007fce15f0a502 in g_main_loop_run (loop=0x55b37261a040) at ../../../../glib/gmain.c:4082
        __func__ = "g_main_loop_run"
#4  0x00007fce164f3b26 in gdbus_shared_thread_func (user_data=0x55b372641ae0) at ../../../../gio/gdbusprivate.c:275
        data = 0x55b372641ae0
#5  0x00007fce15f31645 in g_thread_proxy (data=0x55b372638ca0) at ../../../../glib/gthread.c:784
        thread = 0x55b372638ca0
#6  0x00007fce15ca77fc in start_thread (arg=0x7fce0fd27700) at pthread_create.c:465
        pd = 0x7fce0fd27700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140523005441792, -7854264217586426320, 140728799671390, 140728799671391, 140523005441792, 140523005442496, 7826152148476042800, 7826174070343540272}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#7  0x00007fce159d4b5f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
.
Thread 1 (Thread 0x7fce1702c580 (LWP 2869)):
#0  0x00007fce16a1f4bf in cups_finalize_client_conf (cc=0x7fce0000f520) at usersys.c:1051
        value = <optimized out>
        fp = <optimized out>
        home = <optimized out>
        filename = "\200`cr\263U\000\000\020\240}p\263U\000\000\200`cr\263U\000\000p\252`r\263U\000\000p8\035\372\375\177\000\000\005y}p\263U\000\000x9\035\372\375\177\000\000\000\000\000\000\001", '\000' <repeats 12 times>, "L\243\214bg\300 \000\000\000\000\000\000\000\000\020\247}p\263U\000\000\320y}p\263U\000\000\301\021\216\025\316\177\000\000\000\000\000\000\000\000\000\000x9\035\372\375\177\000\000\000\000\000\000\001\000\000\000pw}p\263U\000\000\000\000\000\000\000\000\000\000\060\036\223\204\265\354f8\320y}p\263U\000\000p9\035\372\375\177", '\000' <repeats 18 times>, "\060\036\363\273t\370\373l"...
        cc = {ssl_options = 21939, ssl_min_version = -98748688, ssl_max_version = 32765, trust_first = -98748576, any_root = 32765, expired_certs = -98748584, validate_certs = 32765, encryption = 368019164, user = "\316\177\000\000\020\067\035\372\a\000\000\000\340\264\001\000\316\177\000\000 \365\000\000\316\177\000\000\021\000\000\000\000\000\000\000\240\006dr\263U\000\000\220M\001\000\316\177\000\000\200\022\035\026\316\177\000\000d\370M", <incomplete sequence \316>, server_name = "\177\000\000p\220br\263U\000\000C\370M\026\316\177\000\000\320ybr\263U\000\000\320ybr\263U\000\000\000\000\000\000\000\000\000\000%\236\360\025\316\177\000\000@\210\000\000\316\177\000\000T7\035\372\000\000\000\000`g\360\025\316\177\000\000\000\000\000\000\000\000\000\000x7\035\372\375\177\000\000\200\067\035\372\375\177\000\000\000\000\000\000\000\000\000\000\340\264\001\000\316\177\000\000\360\367M\026\316\177\000\000\000L\243\214bg\300 \320ybr\263U\000\000\320ybr\263U\000\000\001\000\000\000\000\000\000\000\340\326ar\263U\000\000\001\000\000\000\000\000\000\000@\226\361\025\316\177\000\000\001\000\000\000\000\000\000\000\360\241\360\025\316\177\000\000C\000\000\000\000\000\000\000"..., gss_service_name = "U\000\000p9\035\372\375\177", '\000' <repeats 18 times>, "\002\245\360", <incomplete sequence \316>}
        cg = 0x55b37263e190
#1  0x00007fce16a1f4bf in _cupsSetDefaults () at usersys.c:924
        fp = <optimized out>
        home = <optimized out>
        filename = "\200`cr\263U\000\000\020\240}p\263U\000\000\200`cr\263U\000\000p\252`r\263U\000\000p8\035\372\375\177\000\000\005y}p\263U\000\000x9\035\372\375\177\000\000\000\000\000\000\001", '\000' <repeats 12 times>, "L\243\214bg\300 \000\000\000\000\000\000\000\000\020\247}p\263U\000\000\320y}p\263U\000\000\301\021\216\025\316\177\000\000\000\000\000\000\000\000\000\000x9\035\372\375\177\000\000\000\000\000\000\001\000\000\000pw}p\263U\000\000\000\000\000\000\000\000\000\000\060\036\223\204\265\354f8\320y}p\263U\000\000p9\035\372\375\177", '\000' <repeats 18 times>, "\060\036\363\273t\370\373l"...
        cc = {ssl_options = 21939, ssl_min_version = -98748688, ssl_max_version = 32765, trust_first = -98748576, any_root = 32765, expired_certs = -98748584, validate_certs = 32765, encryption = 368019164, user = "\316\177\000\000\020\067\035\372\a\000\000\000\340\264\001\000\316\177\000\000 \365\000\000\316\177\000\000\021\000\000\000\000\000\000\000\240\006dr\263U\000\000\220M\001\000\316\177\000\000\200\022\035\026\316\177\000\000d\370M", <incomplete sequence \316>, server_name = "\177\000\000p\220br\263U\000\000C\370M\026\316\177\000\000\320ybr\263U\000\000\320ybr\263U\000\000\000\000\000\000\000\000\000\000%\236\360\025\316\177\000\000@\210\000\000\316\177\000\000T7\035\372\000\000\000\000`g\360\025\316\177\000\000\000\000\000\000\000\000\000\000x7\035\372\375\177\000\000\200\067\035\372\375\177\000\000\000\000\000\000\000\000\000\000\340\264\001\000\316\177\000\000\360\367M\026\316\177\000\000\000L\243\214bg\300 \320ybr\263U\000\000\320ybr\263U\000\000\001\000\000\000\000\000\000\000\340\326ar\263U\000\000\001\000\000\000\000\000\000\000@\226\361\025\316\177\000\000\001\000\000\000\000\000\000\000\360\241\360\025\316\177\000\000C\000\000\000\000\000\000\000"..., gss_service_name = "U\000\000p9\035\372\375\177", '\000' <repeats 18 times>, "\002\245\360", <incomplete sequence \316>}
        cg = 0x55b37263e190
#2  0x1849800627655920 in  ()
#3  0x0034365f3638788f in  ()
#4  0x0000000000000000 in  ()