diff --git a/bsp/mini/port/luat_malloc_mini.c b/bsp/mini/port/luat_malloc_mini.c
index e5c58a150..66d01e6e4 100644
--- a/bsp/mini/port/luat_malloc_mini.c
+++ b/bsp/mini/port/luat_malloc_mini.c
@@ -29,7 +29,7 @@ void* luat_heap_realloc(void* ptr, size_t len) {
 void* luat_heap_calloc(size_t count, size_t _size) {
     void *ptr = luat_heap_malloc(count * _size);
     if (ptr) {
-        memset(ptr, 0, _size);
+        memset(ptr, 0, count * _size);
     }
     return ptr;
 }
diff --git a/components/rsa/binding/luat_lib_rsa.c b/components/rsa/binding/luat_lib_rsa.c
index bd3b9b82b..f09755cf8 100644
--- a/components/rsa/binding/luat_lib_rsa.c
+++ b/components/rsa/binding/luat_lib_rsa.c
@@ -43,7 +43,7 @@ end
 #include "luat_crypto.h"
 #include "luat_fs.h"
 
-#define LUAT_LOG_TAG "rs"
+#define LUAT_LOG_TAG "rsa"
 #include "luat_log.h"
 
 #include "mbedtls/rsa.h"
diff --git a/luat/weak/luat_malloc_weak.c b/luat/weak/luat_malloc_weak.c
index d158f30f5..ff00e9c5a 100644
--- a/luat/weak/luat_malloc_weak.c
+++ b/luat/weak/luat_malloc_weak.c
@@ -31,7 +31,7 @@ LUAT_WEAK void* luat_heap_realloc(void* ptr, size_t len) {
 LUAT_WEAK void* luat_heap_calloc(size_t count, size_t _size) {
     void *ptr = luat_heap_malloc(count * _size);
     if (ptr) {
-        memset(ptr, 0, _size);
+        memset(ptr, 0, count * _size);
     }
     return ptr;
 }