Kernel panic when trying to mount non-existing file-system

[Adam Ciarciński <adam%NetBSD.org@localhost>]

Greetings,

If I build custom kernel with some file-systems disabled (commented out in 
config), and then try to mount that kind of file-system, the kernel panics. 
That is true at least for PROCFS and PTYFS. And that's for -current for at 
least a month.

Is that intentional?

Kind regards,
Adam