From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Message-Id: <20111102221456.785169950@clark.kroah.org> Date: Wed, 02 Nov 2011 15:14:39 -0700 From: Greg KH To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: torvalds@linux-foundation.org, akpm@linux-foundation.org, alan@lxorguk.ukuu.org.uk, "J. Bruce Fields" Subject: [073/107] nfsd4: ignore WANT bits in open downgrade In-Reply-To: <20111102221600.GA26650@kroah.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: 2.6.32-longterm review patch. If anyone has any objections, please let us know. ------------------ From: "J. Bruce Fields" commit c30e92df30d7d5fe65262fbce5d1b7de675fe34e upstream. We don't use WANT bits yet--and sending them can probably trigger a BUG() further down. Signed-off-by: J. Bruce Fields Signed-off-by: Greg Kroah-Hartman --- fs/nfsd/nfs4state.c | 2 ++ 1 file changed, 2 insertions(+) --- a/fs/nfsd/nfs4state.c +++ b/fs/nfsd/nfs4state.c @@ -3079,6 +3079,8 @@ nfsd4_open_downgrade(struct svc_rqst *rq if (!access_valid(od->od_share_access, cstate->minorversion) || !deny_valid(od->od_share_deny)) return nfserr_inval; + /* We don't yet support WANT bits: */ + od->od_share_access &= NFS4_SHARE_ACCESS_MASK; nfs4_lock_state(); if ((status = nfs4_preprocess_seqid_op(cstate,