diff --git a/kernel/events/ring_buffer.c b/kernel/events/ring_buffer.c
index 51386d9105fa10e488bf2de54a6ef44a5141f8c3..5631af940316dbc0e6cc1da827768c6da73d71b1 100644
--- a/kernel/events/ring_buffer.c
+++ b/kernel/events/ring_buffer.c
@@ -724,7 +724,7 @@ struct ring_buffer *rb_alloc(int nr_pages, long watermark, int cpu, int flags)
 	size = sizeof(struct ring_buffer);
 	size += nr_pages * sizeof(void *);
 
-	if (order_base_2(size) >= MAX_ORDER)
+	if (order_base_2(size) >= PAGE_SHIFT+MAX_ORDER)
 		goto fail;
 
 	rb = kzalloc(size, GFP_KERNEL);