diff --git a/include/neuron/adapter.h b/include/neuron/adapter.h
index 905eb77e..6466742c 100644
--- a/include/neuron/adapter.h
+++ b/include/neuron/adapter.h
@@ -820,23 +820,27 @@ static inline void neu_resp_read_free(neu_resp_read_group_t *resp)
     utarray_free(resp->tags);
 }
 
+typedef struct {
+    uint16_t        index;
+    pthread_mutex_t mtx;
+} neu_reqresp_trans_data_ctx_t;
+
 typedef struct {
     char driver[NEU_NODE_NAME_LEN];
     char group[NEU_GROUP_NAME_LEN];
 
-    uint16_t        index;
-    pthread_mutex_t mtx;
-    UT_array *      tags; // neu_resp_tag_value_meta_t
+    neu_reqresp_trans_data_ctx_t *ctx;
+    UT_array *                    tags; // neu_resp_tag_value_meta_t
 } neu_reqresp_trans_data_t;
 
 static inline void neu_trans_data_free(neu_reqresp_trans_data_t *data)
 {
-    pthread_mutex_lock(&data->mtx);
-    if (data->index > 0) {
-        data->index -= 1;
+    pthread_mutex_lock(&data->ctx->mtx);
+    if (data->ctx->index > 0) {
+        data->ctx->index -= 1;
     }
 
-    if (data->index == 0) {
+    if (data->ctx->index == 0) {
         utarray_foreach(data->tags, neu_resp_tag_value_meta_t *, tag_value)
         {
             if (tag_value->value.type == NEU_TYPE_PTR) {
@@ -844,10 +848,11 @@ static inline void neu_trans_data_free(neu_reqresp_trans_data_t *data)
             }
         }
         utarray_free(data->tags);
-        pthread_mutex_unlock(&data->mtx);
-        pthread_mutex_destroy(&data->mtx);
+        pthread_mutex_unlock(&data->ctx->mtx);
+        pthread_mutex_destroy(&data->ctx->mtx);
+        free(data->ctx);
     } else {
-        pthread_mutex_unlock(&data->mtx);
+        pthread_mutex_unlock(&data->ctx->mtx);
     }
 }
 
diff --git a/src/adapter/driver/driver.c b/src/adapter/driver/driver.c
index e18708b3..0a5a65e1 100644
--- a/src/adapter/driver/driver.c
+++ b/src/adapter/driver/driver.c
@@ -225,9 +225,10 @@ static void update_im(neu_adapter_t *adapter, const char *group,
         if (find != NULL) {
             pthread_mutex_lock(&find->apps_mtx);
 
-            data->index = utarray_len(find->apps);
-            if (data->index > 0) {
-                pthread_mutex_init(&data->mtx, NULL);
+            data->ctx        = calloc(1, sizeof(neu_reqresp_trans_data_ctx_t));
+            data->ctx->index = utarray_len(find->apps);
+            if (data->ctx->index > 0) {
+                pthread_mutex_init(&data->ctx->mtx, NULL);
 
                 utarray_foreach(find->apps, sub_app_t *, app)
                 {
@@ -238,6 +239,7 @@ static void update_im(neu_adapter_t *adapter, const char *group,
                 }
             } else {
                 utarray_free(data->tags);
+                free(data->ctx);
             }
 
             pthread_mutex_unlock(&find->apps_mtx);
@@ -1271,10 +1273,11 @@ static int report_callback(void *usr_data)
     if (utarray_len(data->tags) > 0) {
         pthread_mutex_lock(&group->apps_mtx);
 
-        data->index = utarray_len(group->apps);
+        data->ctx        = calloc(1, sizeof(neu_reqresp_trans_data_ctx_t));
+        data->ctx->index = utarray_len(group->apps);
 
-        if (data->index > 0) {
-            pthread_mutex_init(&data->mtx, NULL);
+        if (data->ctx->index > 0) {
+            pthread_mutex_init(&data->ctx->mtx, NULL);
 
             utarray_foreach(group->apps, sub_app_t *, app)
             {
@@ -1286,6 +1289,7 @@ static int report_callback(void *usr_data)
             }
         } else {
             utarray_free(data->tags);
+            free(data->ctx);
         }
 
         pthread_mutex_unlock(&group->apps_mtx);