diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c
index 78d3875a47a5..8e2485bb3aa8 100644
--- a/kernel/trace/ring_buffer.c
+++ b/kernel/trace/ring_buffer.c
@@ -2599,6 +2599,7 @@ rb_allocate_cpu_buffer(struct trace_buffer *buffer, long nr_pages, int cpu)
 	return_ptr(cpu_buffer);
 
  fail_free_reader:
+	kfree(cpu_buffer->subbuf_ids);
 	free_buffer_page(cpu_buffer->reader_page);
 
 	return NULL;