tree 27e8f8c28d1c68d51fbeb282ee970eb85496fb14
parent b3f9e7239074613aa6bdafa4caf7c104fe1e7276
author Trond Myklebust <trond.myklebust@primarydata.com> 1474565934 -0400
committer Anna Schumaker <Anna.Schumaker@Netapp.com> 1475001151 -0400

NFSv4: nfs4_copy_delegation_stateid() must fail if the delegation is invalid

We must not allow the use of delegations that have been revoked or are
being returned.

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Fixes: 869f9dfa4d6d ("NFSv4: Fix races between nfs_remove_bad_delegation()...")
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Cc: stable@vger.kernel.org # v3.19+
Tested-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>