diff --git a/kernel/fork.c b/kernel/fork.c
index f88bd98..17bbf09 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -86,6 +86,7 @@
 DEFINE_PER_CPU(unsigned long, process_counts) = 0;
 
 __cacheline_aligned DEFINE_RWLOCK(tasklist_lock);  /* outer */
+EXPORT_SYMBOL_GPL(tasklist_lock);
 
 int nr_processes(void)
 {