diff --git a/[refs] b/[refs]
index 8c3ec6a5ddeb..ed7c0984cf70 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 2a6e3ebee2edcade56f836390a5f0c7b76ff5f9e
+refs/heads/master: d29bb9782d22063892e28716cdb76a87d2876ddb
diff --git a/trunk/mm/page_alloc.c b/trunk/mm/page_alloc.c
index a3687afc5917..9614aabee8c5 100644
--- a/trunk/mm/page_alloc.c
+++ b/trunk/mm/page_alloc.c
@@ -538,6 +538,8 @@ static inline void __free_one_page(struct page *page,
 	unsigned long uninitialized_var(buddy_idx);
 	struct page *buddy;
 
+	VM_BUG_ON(!zone_is_initialized(zone));
+
 	if (unlikely(PageCompound(page)))
 		if (unlikely(destroy_compound_page(page, order)))
 			return;