diff --git a/kernel/sched_stats.h b/kernel/sched_stats.h
index 5bae2e0c3ff293b665e0428ce2942c6e9ac1db0b..a38878e0e49d50cebcbb52fc5a976df23497f3ef 100644
--- a/kernel/sched_stats.h
+++ b/kernel/sched_stats.h
@@ -67,6 +67,7 @@ static int show_schedstat(struct seq_file *seq, void *v)
 		preempt_enable();
 #endif
 	}
+	kfree(mask_str);
 	return 0;
 }