static void *__htab_map_lookup_elem(struct bpf_map *map, void *key)
{
	struct bpf_htab *htab = container_of(map, struct bpf_htab, map);
	struct hlist_nulls_head *head;
	struct htab_elem *l;
	u32 hash, key_size;

	WARN_ON_ONCE(!rcu_read_lock_held() && !rcu_read_lock_trace_held() &&
		     !rcu_read_lock_bh_held());

	key_size = map->key_size;

	hash = htab_map_hash(key, key_size, htab->hashrnd);

	head = select_bucket(htab, hash);

	l = lookup_nulls_elem_raw(head, hash, key, key_size, htab->n_buckets);

	return l;
}
static void *__htab_map_lookup_elem(struct bpf_map *map, void *key)
{
	struct bpf_htab *htab = container_of(map, struct bpf_htab, map);
	struct hlist_nulls_head *head;
	struct htab_elem *l;
	u32 hash, key_size;

	WARN_ON_ONCE(!rcu_read_lock_held() && !rcu_read_lock_trace_held() &&
		     !rcu_read_lock_bh_held());

	key_size = map->key_size;

	hash = htab_map_hash(key, key_size, htab->hashrnd);

	head = select_bucket(htab, hash);

	l = lookup_nulls_elem_raw(head, hash, key, key_size, htab->n_buckets);

	return l;
}