--- zzzz-none-000/linux-5.4.213/scripts/kconfig/conf.c	2022-09-15 10:04:56.000000000 +0000
+++ alder-5690pro-762/linux-5.4.213/scripts/kconfig/conf.c	2024-08-14 09:02:15.000000000 +0000
@@ -38,6 +38,7 @@
 
 static int indent = 1;
 static int tty_stdio;
+static int valid_stdin = 1;
 static int sync_kconfig;
 static int conf_cnt;
 static char line[PATH_MAX];
@@ -70,6 +71,16 @@
 		*p-- = 0;
 }
 
+static void check_stdin(void)
+{
+	if (!valid_stdin) {
+		printf("aborted!\n\n");
+		printf("Console input/output is redirected. ");
+		printf("Run 'make oldconfig' to update configuration.\n\n");
+		exit(1);
+	}
+}
+
 /* Helper function to facilitate fgets() by Jean Sacren. */
 static void xfgets(char *str, int size, FILE *in)
 {
@@ -104,6 +115,7 @@
 			printf("%s\n", def);
 			return 0;
 		}
+		check_stdin();
 		/* fall through */
 	case oldaskconfig:
 		fflush(stdout);
@@ -298,6 +310,7 @@
 				printf("%d\n", cnt);
 				break;
 			}
+			check_stdin();
 			/* fall through */
 		case oldaskconfig:
 			fflush(stdout);
@@ -626,6 +639,7 @@
 			}
 			no_conf_write = 1;
 		}
+		valid_stdin = tty_stdio;
 	}
 
 	switch (input_mode) {