diff --git a/nemu/src/cpu/cpu-exec.c b/nemu/src/cpu/cpu-exec.c
index 6ad158a..1f2940f 100644
--- a/nemu/src/cpu/cpu-exec.c
+++ b/nemu/src/cpu/cpu-exec.c
@@ -78,8 +78,10 @@ static void execute(uint64_t n) {
     exec_once(&s, cpu.pc);
     g_nr_guest_inst ++;
     trace_and_difftest(&s, cpu.pc);
-    if (wp_eval_all()) break;
-
+    if (wp_eval_all()) { 
+      puts(s.logbuf);
+      break;
+    }
     if (nemu_state.state != NEMU_RUNNING) break;
     IFDEF(CONFIG_DEVICE, device_update());
   }