nfsd4: fix test_stateid error reply encoding

If the entire operation fails then there's nothing to encode.

Cc: stable@vger.kernel.org
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index de7bc8f7c106a440d6e4cb0fe0110f83a44acce0..aa04a6a98bd5ae3f6ced9d1f6c564100743b9ca3 100644 (file)
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -3473,6 +3473,9 @@ nfsd4_encode_test_stateid(struct nfsd4_compoundres *resp, __be32 nfserr,
        struct nfsd4_test_stateid_id *stateid, *next;
        __be32 *p;
 
+       if (nfserr)
+               return nfserr;
+
        RESERVE_SPACE(4 + (4 * test_stateid->ts_num_ids));
        *p++ = htonl(test_stateid->ts_num_ids);