diff --git a/include/linux/mm.h b/include/linux/mm.h
index a37c8a29c49bacb7d72b88b45a7733f98c88aeda..8bbcccbc55654341c4d2b361549e1da4da6d65cb 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -3092,7 +3092,7 @@ extern int apply_to_existing_page_range(struct mm_struct *mm,
 				   unsigned long address, unsigned long size,
 				   pte_fn_t fn, void *data);
 
-extern void init_mem_debugging_and_hardening(void);
+extern void __init init_mem_debugging_and_hardening(void);
 #ifdef CONFIG_PAGE_POISONING
 extern void __kernel_poison_pages(struct page *page, int numpages);
 extern void __kernel_unpoison_pages(struct page *page, int numpages);
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index b94d3a42cb8bf5315ddf3b442d69777cb6cd6f83..21261f55dab1ed833278e8477f1aa65487d71be5 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -903,7 +903,7 @@ static inline void clear_page_guard(struct zone *zone, struct page *page,
  * order of appearance. So we need to first gather the full picture of what was
  * enabled, and then make decisions.
  */
-void init_mem_debugging_and_hardening(void)
+void __init init_mem_debugging_and_hardening(void)
 {
 	bool page_poisoning_requested = false;