This problem was fixed with revision 1.303 of vfs_syscalls.c.  It was
caused by trying to fchdir() to a non-directory or to a directory without
executed permissions.  netbsd-4 is also affected, I'll submit a pullup.

-- 
Antti Kantee <pooka@iki.fi>                     Of course he runs NetBSD
http://www.iki.fi/pooka/                          http://www.NetBSD.org/
    "la qualité la plus indispensable du cuisinier est l'exactitude"