diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 907923d5f8bb..e1d902464e08 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -9183,7 +9183,7 @@ tracing_init_tracefs_percpu(struct trace_array *tr, long cpu)
 	trace_create_cpu_file("stats", TRACE_MODE_READ, d_cpu,
 				tr, cpu, &tracing_stats_fops);
 
-	trace_create_cpu_file("buffer_size_kb", TRACE_MODE_READ, d_cpu,
+	trace_create_cpu_file("buffer_size_kb", TRACE_MODE_WRITE, d_cpu,
 				tr, cpu, &tracing_entries_fops);
 
 	if (tr->range_addr_start)