.
Thread 2 (Thread 0x7f58458f2800 (LWP 1031)):
#0  0x00007f5843e37bb7 in epoll_wait (epfd=4, events=0x5584427ca890, maxevents=4096, timeout=timeout@entry=285000) at ../sysdeps/unix/sysv/linux/epoll_wait.c:30
        resultvar = 18446744073709551612
        sc_cancel_oldtype = 0
        sc_ret = <optimized out>
#1  0x0000558440b06c23 in cupsdDoSelect (timeout=285) at select.c:462
        i = <optimized out>
        event = <optimized out>
        nfds = <optimized out>
        fdptr = <optimized out>
        pfd = <optimized out>
        count = <optimized out>
#2  0x0000558440ad5d3e in main (argc=<optimized out>, argv=<optimized out>) at main.c:831
        i = 2
        opt = <optimized out>
        close_all = <optimized out>
        disconnect = <optimized out>
        fg = <optimized out>
        run_as_child = <optimized out>
        print_profile = <optimized out>
        fds = 0
        con = <optimized out>
        job = <optimized out>
        lis = <optimized out>
        current_time = <optimized out>
        activity = <optimized out>
        senddoc_time = 1523291110
        expire_time = 1523291110
        report_time = 0
        event_time = 1523291095
        timeout = 285
        limit = {rlim_cur = 4096, rlim_max = 4096}
        action = {__sigaction_handler = {sa_handler = 0x558440aec060 <sigterm_handler>, sa_sigaction = 0x558440aec060 <sigterm_handler>}, sa_mask = {__val = {81920, 0 <repeats 15 times>}}, sa_flags = 0, sa_restorer = 0x0}
        netif_time = 1523291092
        service_idle_exit = 0
.
Thread 1 (Thread 0x7f583f621700 (LWP 11503)):
#0  0x0000558440aec7fb in create_local_bg_thread (printer=0x5584428e4b00) at ipp.c:5368
        from = <optimized out>
        to = <optimized out>
        fromppd = "/var/spool/cups/tmp/004075ad57a60", '\000' <repeats 990 times>
        toppd = '\000' <repeats 1023 times>
        scheme = "ipp", '\000' <repeats 28 times>
        userpass = '\000' <repeats 255 times>
        host = "HPA0481CC8AFF7.local", '\000' <repeats 235 times>
        resource = "/ipp/print", '\000' <repeats 606 times>...
        line = '\000' <repeats 40 times>, "\060\021\062DX\177", '\000' <repeats 11 times>, "\017b?X\177", '\000' <repeats 11 times>, "K\216B\204U\000\000`t\036\353\376\177\000\000\303>qEX\177\000\000\005", '\000' <repeats 23 times>, "\220\377\321CX\177\000\000 \016b?X\177\000\000\n\267qEX\177\000\000\000\000\000\000\000\000\000\000y\346\020DX\177\000\000\000\377\377\377\377\377\377\377\030\000\000\000\000\000\000\000P\016b?X\177\000\000\000\027b?X\177\000\000\000\027b?X\177", '\000' <repeats 34 times>...
        port = 631
        encryption = <optimized out>
        http = <optimized out>
        request = <optimized out>
        response = 0x7f58380033b0
        attr = <optimized out>
#1  0x00007f584410e6db in start_thread (arg=0x7f583f621700) at pthread_create.c:463
        pd = 0x7f583f621700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140016997242624, 1757197937097669625, 140016997240576, 0, 94026540665600, 140732843062368, -1814197541739070471, -1814288643074458631}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
#2  0x00007f5843e3788f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
No locals.