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-rw-r--r--fs/nfsd/nfs4state.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 683885b18ce..a39a542d8be 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -3574,6 +3574,8 @@ 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();
status = nfs4_preprocess_confirmed_seqid_op(cstate, od->od_seqid,