monkeyd crashes when scanned with hmap.py (memory corruption)

[marboi]

$ python2.7 ./hmap.py http://127.0.0.1:2001/
Get it at https://raw.githubusercontent.com/Mebus/hmap/master/hmap.py
...

(gdb) c
Continuing.
[2020/07/14 20:53:52] [   Info] HTTP Server started
*** buffer overflow detected ***: /usr/sbin/monkey terminated

Thread 10 "monkey: wrk/7" received signal SIGABRT, Aborted.
__GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
50	../sysdeps/unix/sysv/linux/raise.c: No such file or directory.
(gdb) bt
#0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
#1  0x00007ffff7d9155d in __GI_abort () at abort.c:79
#2  0x00007ffff7deadcf in __libc_message (action=<optimized out>, 
    fmt=fmt@entry=0x7ffff7ef2d4c "*** %s ***: %s terminated\n")
    at ../sysdeps/posix/libc_fatal.c:181
#3  0x00007ffff7e79b6d in __GI___fortify_fail_abort (
    need_backtrace=need_backtrace@entry=true, 
    msg=msg@entry=0x7ffff7ef2cd8 "buffer overflow detected")
    at fortify_fail.c:28
#4  0x00007ffff7e79ba3 in __GI___fortify_fail (
    msg=msg@entry=0x7ffff7ef2cd8 "buffer overflow detected")
    at fortify_fail.c:44
#5  0x00007ffff7e78532 in __GI___chk_fail () at chk_fail.c:28
#6  0x000055555555f4e9 in mk_http_init ()
#7  0x00005555555606d0 in mk_http_sched_read ()
#8  0x000055555555e3c3 in mk_sched_event_read ()
#9  0x000055555556340b in mk_server_worker_loop ()
#10 0x000055555555dd7d in mk_sched_launch_worker_loop ()
#11 0x00007ffff7f37ea7 in start_thread (arg=<optimized out>)
    at pthread_create.c:479
#12 0x00007ffff7e69f1f in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
(gdb)