diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 612b85ac414bf63bf5838ac9be6881dcd25570bf..62b882dc48ec2e011610e3163d5cc91c94130c73 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -2290,6 +2290,7 @@ nfsd4_sequence(struct svc_rqst *rqstp,
 				    nfserr_rep_too_big;
 	if (xdr_restrict_buflen(xdr, buflen - 2 * RPC_MAX_AUTH_SIZE))
 		goto out_put_session;
+	svc_reserve(rqstp, buflen);
 
 	status = nfs_ok;
 	/* Success! bump slot seqid */