diff --git a/kernel/fork.c b/kernel/fork.c
index 9a8ec66..6d42242 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -854,6 +854,7 @@
 	ksm_exit(mm);
 	khugepaged_exit(mm); /* must run before exit_mmap */
 	exit_mmap(mm);
+	mm_put_huge_zero_page(mm);
 	set_mm_exe_file(mm, NULL);
 	if (!list_empty(&mm->mmlist)) {
 		spin_lock(&mmlist_lock);