Bug#648498: "zfs list" aborts with EINVAL (only on kFreeBSD 8.1)

[Robert Millan <rmh@debian.org>]

Package: zfsutils
Version: 8.3~svn226546-1
Severity: important

When installing zfsutils 8.3~svn226546-1 on a sid chroot that runs with
kFreeBSD 8.1:

  [...]
  Starting ZFS subsystem... swapinternal error: L�rgument passat no és vàlid
  Aborted (core dumped)
   filesystemsinternal error: L�rgument passat no és vàlid
  Aborted (core dumped)
   failed!
  invoke-rc.d: initscript zfs, action "start" failed.

Problem comes from "zfs list":

  $ LANG=C sudo zfs list
  internal error: Invalid argument

-- System Information:
Debian Release: 6.0.3
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: kfreebsd-amd64 (x86_64)

Kernel: kFreeBSD 8.1-1-amd64
Locale: LANG=ca_AD.UTF-8, LC_CTYPE=ca_AD.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash