diff --git a/components/bt/include/esp_bt.h b/components/bt/include/esp_bt.h
index 584b20564c..797383aa75 100644
--- a/components/bt/include/esp_bt.h
+++ b/components/bt/include/esp_bt.h
@@ -462,7 +462,7 @@ esp_err_t esp_ble_scan_dupilcate_list_flush(void);
 
 void esp_bt_check_need_restart();
 
-extern uint32_t* btdm_rmt_get_dbg_log_addr();
+#define IRAM_LOG_BUFFER_SIZE 8000
 extern uint32_t* btdm_rmt_get_fixed_log_addr();
 int btdm_rmt_dbg_printf_to_iram(const char* format, ...);
 
diff --git a/components/bt/lib b/components/bt/lib
index 1991509346..fb580fefc2 160000
--- a/components/bt/lib
+++ b/components/bt/lib
@@ -1 +1 @@
-Subproject commit 19915093465e52b0d891c621c340e49ee1cbeabf
+Subproject commit fb580fefc288a312f9a6267e6bed5a9802c20c6c