diff --git a/kernel/bpf/helpers.c b/kernel/bpf/helpers.c
index 62a53ebfedf9..61f51dee8448 100644
--- a/kernel/bpf/helpers.c
+++ b/kernel/bpf/helpers.c
@@ -2215,7 +2215,12 @@ __bpf_kfunc struct cgroup *bpf_cgroup_from_id(u64 cgid)
 __bpf_kfunc long bpf_task_under_cgroup(struct task_struct *task,
 				       struct cgroup *ancestor)
 {
-	return task_under_cgroup_hierarchy(task, ancestor);
+	long ret;
+
+	rcu_read_lock();
+	ret = task_under_cgroup_hierarchy(task, ancestor);
+	rcu_read_unlock();
+	return ret;
 }
 #endif /* CONFIG_CGROUPS */