diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index c43b4e7fb298..20af14e695c7 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -650,6 +650,7 @@ static void online_pages_range(unsigned long start_pfn, unsigned long nr_pages)
 	 * this and the first chunk to online will be pageblock_nr_pages.
 	 */
 	for (pfn = start_pfn; pfn < end_pfn;) {
+		struct page *page = pfn_to_page(pfn);
 		int order;
 
 		/*
@@ -664,7 +665,14 @@ static void online_pages_range(unsigned long start_pfn, unsigned long nr_pages)
 		else
 			order = MAX_PAGE_ORDER;
 
-		(*online_page_callback)(pfn_to_page(pfn), order);
+		/*
+		 * Exposing the page to the buddy by freeing can cause
+		 * issues with debug_pagealloc enabled: some archs don't
+		 * like double-unmappings. So treat them like any pages that
+		 * were allocated from the buddy.
+		 */
+		debug_pagealloc_map_pages(page, 1 << order);
+		(*online_page_callback)(page, order);
 		pfn += (1UL << order);
 	}
 
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index a887ba2cc91d..75de3711784e 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -1295,12 +1295,6 @@ void __meminit __free_pages_core(struct page *page, unsigned int order,
 			set_page_count(p, 0);
 		}
 
-		/*
-		 * Freeing the page with debug_pagealloc enabled will try to
-		 * unmap it; some archs don't like double-unmappings, so
-		 * map it first.
-		 */
-		debug_pagealloc_map_pages(page, nr_pages);
 		adjust_managed_page_count(page, nr_pages);
 	} else {
 		for (loop = 0; loop < nr_pages; loop++, p++) {