diff --git a/kernel/futex.c b/kernel/futex.c
index 19edadf..f985bd0 100644
--- a/kernel/futex.c
+++ b/kernel/futex.c
@@ -1552,6 +1552,9 @@
 	struct futex_hash_bucket *hb1, *hb2;
 	struct futex_q *this, *next;
 
+	if (nr_wake < 0 || nr_requeue < 0)
+		return -EINVAL;
+
 	if (requeue_pi) {
 		/*
 		 * Requeue PI only works on two distinct uaddrs. This