diff --git a/components/bt/bt.c b/components/bt/bt.c
index 0b78d49190..dd7e75633d 100644
--- a/components/bt/bt.c
+++ b/components/bt/bt.c
@@ -1408,7 +1408,7 @@ esp_err_t esp_ble_scan_dupilcate_list_flush(void)
     return ESP_OK;
 }
 
-void IRAM_ATTR r_assert_with_log(uint32_t error_bit, uint32_t time_slot)
+void IRAM_ATTR __attribute__((noinline)) r_assert_with_log(uint32_t error_bit, uint32_t time_slot)
 {
     __asm__ __volatile__("ill\n");
 }
@@ -1418,7 +1418,7 @@ void IRAM_ATTR r_assert_with_log(uint32_t error_bit, uint32_t time_slot)
  *
  * After coredump fixing this issue, just delete this function.
  */
-void IRAM_ATTR r_assert(const char *condition, int param0, int param1, const char *file, int line)
+void IRAM_ATTR __attribute__((noinline)) r_assert(const char *condition, int param0, int param1, const char *file, int line)
 {
     extern uint32_t btdm_debug_error_get_bit();
     extern uint32_t btdm_debug_error_get_time();
@@ -1438,7 +1438,6 @@ extern uint32_t real_bt_isr_count ;
 extern uint32_t connection_LinkSuperTimeout;
 extern uint32_t bt_isr_count_arry[16];
 
-
 static bool check_bt_is_alive()
 {
     static int stop_times = 0;
@@ -1467,6 +1466,7 @@ void esp_bt_check_need_restart()
     if(connection_is_alive() && (check_bt_is_alive()==false))
     {
         ets_printf("!! Check BT is not alive. Abort !!");
+        RMT_DBG_LOG_ERROR("BT not alive");
         abort();
     }
 }
diff --git a/components/bt/include/esp_bt.h b/components/bt/include/esp_bt.h
index aba6c18fb5..584b20564c 100644
--- a/components/bt/include/esp_bt.h
+++ b/components/bt/include/esp_bt.h
@@ -462,6 +462,14 @@ 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();
+extern uint32_t* btdm_rmt_get_fixed_log_addr();
+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__);
+#define RMT_DBG_LOG_DEBUG(format, ... )  btdm_rmt_dbg_printf_to_iram(DRAM_STR("D(%d):"format"\n"),esp_log_timestamp(), ##__VA_ARGS__);
+
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/components/bt/lib b/components/bt/lib
index 698eb78610..1991509346 160000
--- a/components/bt/lib
+++ b/components/bt/lib
@@ -1 +1 @@
-Subproject commit 698eb78610ea04a504dd99a6e1159d1452b301f4
+Subproject commit 19915093465e52b0d891c621c340e49ee1cbeabf