diff --git a/src/unix/thread.c b/src/unix/thread.c
index f05e6fe0f7dd5ac579f6a9d6f93bffb99e1bcbc2..f104e6667970f6a98a13792946ce1d9accbbdb33 100644
--- a/src/unix/thread.c
+++ b/src/unix/thread.c
@@ -21,6 +21,7 @@
 
 #include "uv.h"
 #include "internal.h"
+#include "uv_log.h"
 
 #include <pthread.h>
 #include <assert.h>
@@ -378,7 +379,9 @@ void uv_rwlock_destroy(uv_rwlock_t* rwlock) {
 
 
 void uv_rwlock_rdlock(uv_rwlock_t* rwlock) {
-  if (pthread_rwlock_rdlock(rwlock))
+  int ret = pthread_rwlock_rdlock(rwlock);
+  UV_LOGI("[uv_rwlock_rdlock]ret of pthread_rwlock_rdlock is %{public}d", ret);
+  if (ret)
     abort();
 }