diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c
index 078cee0d6b4d..34d0ee8e0e85 100644
--- a/kernel/trace/ring_buffer.c
+++ b/kernel/trace/ring_buffer.c
@@ -741,6 +741,9 @@ __poll_t ring_buffer_poll_wait(struct ring_buffer *buffer, int cpu,
 	if (full) {
 		poll_wait(filp, &work->full_waiters, poll_table);
 		work->full_waiters_pending = true;
+		if (!cpu_buffer->shortest_full ||
+		    cpu_buffer->shortest_full > full)
+			cpu_buffer->shortest_full = full;
 	} else {
 		poll_wait(filp, &work->waiters, poll_table);
 		work->waiters_pending = true;