--- zzzz-none-000/linux-4.4.60/mm/cma_debug.c	2017-04-08 07:53:53.000000000 +0000
+++ hawkeye-5590-729/linux-4.4.60/mm/cma_debug.c	2022-03-30 14:21:53.000000000 +0000
@@ -167,7 +167,7 @@
 	char name[16];
 	int u32s;
 
-	sprintf(name, "cma-%d", idx);
+	snprintf(name, sizeof(name), "cma-%d", idx);
 
 	tmp = debugfs_create_dir(name, cma_debugfs_root);