diff --git a/include/linux/mm.h b/include/linux/mm.h
index f223ac26b5d97e809cbacdeea71a72c29a2d4714..b530c99e8e8163222e128985bbef09d9c218cc05 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -2386,6 +2386,9 @@ static inline bool page_is_guard(struct page *page)
 		return false;
 
 	page_ext = lookup_page_ext(page);
+	if (unlikely(!page_ext))
+		return false;
+
 	return test_bit(PAGE_EXT_DEBUG_GUARD, &page_ext->flags);
 }
 #else