From 3a1f47cef0246bfcbd8719f2191754c3a7b86c0b Mon Sep 17 00:00:00 2001 From: "J. Bruce Fields" Date: Mon, 10 Oct 2011 17:34:31 -0400 Subject: [PATCH] nfsd4: ignore WANT bits in open downgrade 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(+) diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c index cd2a43d4893..6f8bcc733f7 100644 --- a/fs/nfsd/nfs4state.c +++ b/fs/nfsd/nfs4state.c @@ -3570,6 +3570,8 @@ nfsd4_open_downgrade(struct svc_rqst *rqstp, 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, -- 2.11.4.GIT