--- x/fs/eventpoll.c
+++ y/fs/eventpoll.c
@@ -456,14 +456,21 @@ static struct kmem_cache *pwq_cache __ro
 struct epitems_head {
 	struct hlist_head epitems;
 	struct epitems_head *next;
+	struct rcu_head rcu;
 };
 
 static struct kmem_cache *ephead_cache __ro_after_init;
 
+static void __free_ephead(struct rcu_head *r)
+{
+	struct epitems_head *head = container_of(r, struct epitems_head, rcu);
+	kmem_cache_free(ephead_cache, head);
+}
+
 static inline void free_ephead(struct epitems_head *head)
 {
 	if (head)
-		kmem_cache_free(ephead_cache, head);
+		call_rcu(&head->rcu, __free_ephead);
 }
 
 static void list_file(struct file *file, struct ep_ctl_ctx *ctx)