my chicken-program is unresponsive. it's using 100% cpu:

$ sudo top | grep 27547
27547 klm       20   0 3190660 1.713g   2744 R  92.8  3.6   4114:02 arp-boats 


$ sudo strace -p 27547
Process 27547 attached
munmap(0x7f4e3394b000, 1073745920)      = 0
munmap(0x7f4e7394c000, 1073745920)      = 0
mmap(NULL, 1073745920, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4e7394c000
mmap(NULL, 1073745920, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4e3394b000
munmap(0x7f4df394a000, 1073745920)      = 0
munmap(0x7f4e7394c000, 1073745920)      = 0
mmap(NULL, 1073745920, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4e7394c000
mmap(NULL, 1073745920, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4df394a000
munmap(0x7f4e3394b000, 1073745920)      = 0
munmap(0x7f4e7394c000, 1073745920)      = 0
mmap(NULL, 1073745920, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4e7394c000
mmap(NULL, 1073745920, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4e3394b000
....
...


$ sudo gdb -p 27547
(gdb) bt
#0  0x00007f4eb67d280c in really_remark () from /usr/local/lib/libchicken.so.8
#1  0x00007f4eb67d2e9e in C_rereclaim2 () from /usr/local/lib/libchicken.so.8
#2  0x00007f4eb67d4259 in allocate_vector_2 () from /usr/local/lib/libchicken.so.8
#3  0x00007f4eb67d5d23 in CHICKEN_run () from /usr/local/lib/libchicken.so.8
#4  0x00007f4eb67d5df0 in CHICKEN_main () from /usr/local/lib/libchicken.so.8
#5  0x00007f4eb619aec5 in __libc_start_main () from /lib/x86_64-linux-gnu/libc.so.6
#6  0x0000000000401333 in _start ()