kern_clock_nanosleep limits the sleep to INT32_MAX / 2 seconds and sleeps
for that long (sys/kern/kern_time.c:543-547). The guest multiplied tv_sec
by 1e9 in 64 bits, so a request of 18446744074 seconds or more wrapped to a
short sleep: nanosleep with tv_sec = INT64_MAX returned after about 0.1 s.
Co-Authored-By: Claude Sonnet 5.5 <[email protected]>
