.
Thread 1 (Thread 0x7fbf787e68c0 (LWP 229)):
#0  0x00007fbf77691753 in __epoll_wait_nocancel () at ../sysdeps/unix/syscall-template.S:84
No locals.
#1  0x0000558cc4bfee6d in ?? ()
No symbol table info available.
#2  0x0000558cc4bff7f6 in ?? ()
No symbol table info available.
#3  0x0000558cc4bc5484 in ?? ()
No symbol table info available.
#4  0x00007fbf775a93f1 in __libc_start_main (main=0x558cc4bc3f20, argc=1, argv=0x7ffe6962b198, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffe6962b188) at ../csu/libc-start.c:291
        result = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, -7831610245004055840, 94063084463680, 140730666496400, 0, 0, -4056093189214754080, -4091554568353404192}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x7ffe6962b1a8, 0x7fbf78829168}, data = {prev = 0x0, cleanup = 0x0, canceltype = 1768075688}}}
        not_first_call = <optimized out>
#5  0x0000558cc4bc666a in ?? ()
No symbol table info available.