--- zzzz-none-000/linux-4.4.271/mm/cma_debug.c	2021-06-03 06:22:09.000000000 +0000
+++ hawkeye-5590-750/linux-4.4.271/mm/cma_debug.c	2023-04-19 10:22:30.000000000 +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);