I run a custom kernel configuration and noticed that node_exporter would not work due to a crash in an lwp_park related syscall (see full stacktrace below)As soon as anything tried to hit /metrics, it crashes.
That's a known issue, unfortunately.Go uses syscalls directly. It supports NetBSD starting with 9, by having binaries that use the NetBSD 9 syscall interface. So you will need the NetBSD 9 compatibility bits to run Go binaries. That's not just node_exporter but any Go software.
-- Benny