diff --git a/kernel/futex.c b/kernel/futex.c
index a03c776..0d21619 100644
--- a/kernel/futex.c
+++ b/kernel/futex.c
@@ -1705,6 +1705,9 @@
 	struct futex_q *this, *next;
 	WAKE_Q(wake_q);
 
+	if (nr_wake < 0 || nr_requeue < 0)
+		return -EINVAL;
+
 	if (requeue_pi) {
 		/*
 		 * Requeue PI only works on two distinct uaddrs. This