diff --git a/kernel/debug/kdb/kdb_io.c b/kernel/debug/kdb/kdb_io.c
index e7835ca88e1600ad88e31706c0e01e05a17a60f5..6735ac36b7187edb6d18c9786c0b376b90e35a57 100644
--- a/kernel/debug/kdb/kdb_io.c
+++ b/kernel/debug/kdb/kdb_io.c
@@ -706,12 +706,16 @@ int vkdb_printf(enum kdb_msgsrc src, const char *fmt, va_list ap)
 			size_avail = sizeof(kdb_buffer) - len;
 			goto kdb_print_out;
 		}
-		if (kdb_grepping_flag >= KDB_GREPPING_FLAG_SEARCH)
+		if (kdb_grepping_flag >= KDB_GREPPING_FLAG_SEARCH) {
 			/*
 			 * This was a interactive search (using '/' at more
-			 * prompt) and it has completed. Clear the flag.
+			 * prompt) and it has completed. Replace the \0 with
+			 * its original value to ensure multi-line strings
+			 * are handled properly, and return to normal mode.
 			 */
+			*cphold = replaced_byte;
 			kdb_grepping_flag = 0;
+		}
 		/*
 		 * at this point the string is a full line and
 		 * should be printed, up to the null.