So I upgraded from 1.4.1 to -current by supping ksrc and userland and
rebuilding.  ps is failing for me now:

peterb# ps
ps: proc size mismatch (16608 total, 680 chunks).
ps: /proc exists but does not have a procfs mounted on it.
ps: fallback /proc-based lookup also failed.  Giving up...

Surprisingly, it continues to fail even after I rebuild libkvm.  Anyone have
any clues as to what could be going on here?

I'm not (yet) on current-users, so if I could trouble you to cc: me until my
subscription processes, that would be neat.

-P