.
Thread 2 (Thread 0x7f58458f2800 (LWP 1031)):
#0  0x00007f5843e37bb7 in epoll_wait (epfd=4, events=0x5584427ca890, maxevents=4096, timeout=285000) at ../sysdeps/unix/sysv/linux/epoll_wait.c:30
        resultvar = 18446744073709551612
        sc_cancel_oldtype = 0
        sc_ret = <optimized out>
#1  0x0000558440b06c23 in ?? ()
No symbol table info available.
#2  0x0000558440ad5d3e in ?? ()
No symbol table info available.
#3  0x00007f5843d37b97 in __libc_start_main (main=0x558440ad5300, argc=2, argv=0x7ffeeb1f67c8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffeeb1f67b8) at ../csu/libc-start.c:310
        self = <optimized out>
        __self = <optimized out>
        result = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, -5518506757982159879, 94026509152144, 140732843124672, 0, 0, -1756680895279825927, -1814293621598356487}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x7f5845714733 <_dl_init+259>, 0x7f5845702c48}, data = {prev = 0x0, cleanup = 0x0, canceltype = 1165051699}}}
        not_first_call = <optimized out>
#4  0x0000558440ad6fba in ?? ()
No symbol table info available.
.
Thread 1 (Thread 0x7f583f621700 (LWP 11503)):
#0  0x0000558440aec7fb in ?? ()
No symbol table info available.
#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.