diff --git a/kernel/cgroup/cgroup.c b/kernel/cgroup/cgroup.c
index 527b489a4dc2..5c0da25ba3fc 100644
--- a/kernel/cgroup/cgroup.c
+++ b/kernel/cgroup/cgroup.c
@@ -5025,6 +5025,7 @@ void css_task_iter_start(struct cgroup_subsys_state *css, unsigned int flags,
 
 	spin_unlock_irqrestore(&css_set_lock, irqflags);
 }
+EXPORT_SYMBOL_GPL(css_task_iter_start);
 
 /**
  * css_task_iter_next - return the next task for the iterator
@@ -5060,6 +5061,7 @@ struct task_struct *css_task_iter_next(struct css_task_iter *it)
 
 	return it->cur_task;
 }
+EXPORT_SYMBOL_GPL(css_task_iter_next);
 
 /**
  * css_task_iter_end - finish task iteration
@@ -5084,6 +5086,7 @@ void css_task_iter_end(struct css_task_iter *it)
 	if (it->cur_task)
 		put_task_struct(it->cur_task);
 }
+EXPORT_SYMBOL_GPL(css_task_iter_end);
 
 static void cgroup_procs_release(struct kernfs_open_file *of)
 {