Fix: lab3 on-board problems

include/logger.h

@@ -19,7 +19,7 @@ static inline char *_logger_string(char *dest, const char *src)
 }
 static inline char *_logger_hex(char *dest, uint64_t x)
 {
-  for (int n, c = 28; c >= 0; c -= 4) {
+  for (int n, c = 60; c >= 0; c -= 4) {
     n = (x >> c) & 0xf;
     n += (n > 9) ? 0x37 : 0x30;
     *dest++ = (char)n;