--- zzzz-none-000/linux-4.4.271/fs/proc/consoles.c	2021-06-03 06:22:09.000000000 +0000
+++ hawkeye-5590-750/linux-4.4.271/fs/proc/consoles.c	2023-04-19 10:22:30.000000000 +0000
@@ -25,6 +25,7 @@
 		{ CON_PRINTBUFFER,	'p' },
 		{ CON_BRL,		'b' },
 		{ CON_ANYTIME,		'a' },
+		{ CON_MUTED,		'M' },
 	};
 	char flags[ARRAY_SIZE(con_flags) + 1];
 	struct console *con = v;
@@ -106,6 +107,9 @@
 
 static int __init proc_consoles_init(void)
 {
+	if (IS_ENABLED(CONFIG_PROC_STRIPPED))
+		return 0;
+
 	proc_create("consoles", 0, NULL, &proc_consoles_operations);
 	return 0;
 }