NFS directory copies cause crash

[Damian Gerow]

I've just updated a low-volume fileserver to 5.4-stable (as of Sep 13), and
ever since, whenever I try to move or copy a directory onto one of its NFS
shares, it causes a crash.  I do not have a crash dump (no dumpdev enabled,
unfortunately), but I can reproduce it quite easily.  The client is a
6.0-BETA3 machine, but I have no other NFS clients to test from (easily).

Is this something known and being worked on, or should I try to gather some
debugging information?