--- x/kernel/bpf/reuseport_array.c
+++ r/kernel/bpf/reuseport_array.c
@@ -24,6 +24,7 @@ void bpf_sk_reuseport_detach(struct sock
 	struct sock __rcu **socks;
 
 	write_lock_bh(&sk->sk_callback_lock);
+	rcu_read_lock();
 	socks = __rcu_dereference_sk_user_data_with_flags(sk, SK_USER_DATA_BPF);
 	if (socks) {
 		WRITE_ONCE(sk->sk_user_data, NULL);
@@ -35,6 +36,7 @@ void bpf_sk_reuseport_detach(struct sock
 		 */
 		RCU_INIT_POINTER(*socks, NULL);
 	}
+	rcu_read_unlock();
 	write_unlock_bh(&sk->sk_callback_lock);
 }