diff --git a/components/bt/bt.c b/components/bt/bt.c
index 3f56be7b5d..fff11bce8e 100644
--- a/components/bt/bt.c
+++ b/components/bt/bt.c
@@ -1022,10 +1022,6 @@ static void hli_queue_setup_pinned_to_core(int core_id)
     }
 }
 
-uint32_t get_rmt_log_len(){
-    return IRAM_LOG_BUFFER_SIZE;
-}
-
 esp_err_t esp_bt_controller_init(esp_bt_controller_config_t *cfg)
 {
 
@@ -1146,7 +1142,7 @@ esp_err_t esp_bt_controller_init(esp_bt_controller_config_t *cfg)
     btdm_controller_status = ESP_BT_CONTROLLER_STATUS_INITED;
     
 #ifdef CONFIG_ESP32_ENABLE_COREDUMP
-    esp_log_dump_init(get_rmt_log_len, btdm_rmt_get_fixed_log_addr);
+    esp_log_dump_init(btdm_rmt_get_log_buffer_size, btdm_rmt_get_fixed_log_addr);
 #else 
     #warning "coredump function is not enabled"
 #endif
diff --git a/components/bt/include/esp_bt.h b/components/bt/include/esp_bt.h
index 797383aa75..57aec4df9b 100644
--- a/components/bt/include/esp_bt.h
+++ b/components/bt/include/esp_bt.h
@@ -462,8 +462,8 @@ esp_err_t esp_ble_scan_dupilcate_list_flush(void);
 
 void esp_bt_check_need_restart();
 
-#define IRAM_LOG_BUFFER_SIZE 8000
 extern uint32_t* btdm_rmt_get_fixed_log_addr();
+uint32_t btdm_rmt_get_log_buffer_size();
 int btdm_rmt_dbg_printf_to_iram(const char* format, ...);
 
 #define RMT_DBG_LOG_ERROR(format, ... )  btdm_rmt_dbg_printf_to_iram(DRAM_STR("E(%d):"format"\n"),esp_log_timestamp(), ##__VA_ARGS__);
diff --git a/components/bt/lib b/components/bt/lib
index 63222fa15e..3405ae5a67 160000
--- a/components/bt/lib
+++ b/components/bt/lib
@@ -1 +1 @@
-Subproject commit 63222fa15e28a5d226c618c89c0f79a4c43496ec
+Subproject commit 3405ae5a67e730d00fd1153d5fac706961fc149e