http://netbsd.i2p/gallery/presentations/maya/eurobsdcon-2018-maya.html
The hang happens after the last print printf("%s:%d\n", __func__, __LINE__); everywhere Commands hang with some connection to memory usage SIGINFO, BSD favourite: [ 510.5488859] load: 0.07 cmd: sleep 1357 [nanoslp] 0.00u 0.00s 0% 1272k
^ wchan wchan appears in kernel source code kern/kern_time.c
352: error = kpause("nanoslp", true, timo, NULL); sufficient to find relevant code!