--- fs/nfs/nfs4xdr.c

+++ fs/nfs/nfs4xdr.c

@@ -2096,7 +2096,7 @@ nfs4_xdr_enc_getacl(struct rpc_rqst *req

encode_compound_hdr(&xdr, req, &hdr);

encode_sequence(&xdr, &args->seq_args, &hdr);

encode_putfh(&xdr, args->fh, &hdr);

- replen = hdr.replen + nfs4_fattr_bitmap_maxsz + 1;

+ replen = hdr.replen + op_decode_hdr_maxsz + nfs4_fattr_bitmap_maxsz + 1;

encode_getattr_two(&xdr, FATTR4_WORD0_ACL, 0, &hdr);

xdr_inline_pages(&req->rq_rcv_buf, replen << 2,