lost zfs after ubuntu upgrade

[jots]

after apt-get upgrade and reboot zfs does not come up.
upgraded to: Ubuntu 14.04.2 LTS
$ uname -a
3.13.0-36-generic #63-Ubuntu SMP Wed Sep 3 21:30:07 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux

$ dmesg | grep zfs gives:

[ 10.413198] zfs: disagrees about version of symbol vn_openat
[ 10.413256] zfs: Unknown symbol vn_openat (err -22)
[ 10.413323] zfs: disagrees about version of symbol __cv_destroy
[ 10.413378] zfs: Unknown symbol __cv_destroy (err -22)
[ 10.413518] zfs: disagrees about version of symbol __kstat_delete
[ 10.413574] zfs: Unknown symbol __kstat_delete (err -22)
[...] many more
[ 27.020660] zfs: disagrees about version of symbol vn_fsync
[ 27.020661] zfs: Unknown symbol vn_fsync (err -22)

$ dkms status
spl, 0.6.3, 3.13.0-36-generic, x86_64: installed
zfs, 0.6.3, 3.13.0-36-generic, x86_64: installed

any idea how I can get zfs working again and zfs partitions mounted?

[jots]

got zfs back by:
sudo apt-get install --reinstall zfs-dkms
sudo zfs mount -a