| Date | Wed, 09 Nov 2011 13:32:45 -0800 | From | Greg KH <> | Subject | [118/264] nfsd4: ignore WANT bits in open downgrade |
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3.1-stable review patch. If anyone has any objections, please let me know.
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From: "J. Bruce Fields" <bfields@redhat.com>
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 <bfields@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
--- fs/nfsd/nfs4state.c | 2 ++ 1 file changed, 2 insertions(+)
--- a/fs/nfsd/nfs4state.c +++ b/fs/nfsd/nfs4state.c @@ -3570,6 +3570,8 @@ 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,
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