Merge branch 'bugfix/ble_fix_exception_build_sr_msg_#12124' into 'master'

component/bt: fix the exception in attp_buil_sr_msg when handling gatt write bug. bug number #12124.

 fix the exception in attp_buil_sr_msg when handling gatt write bug. 

See merge request !743

components/bt/bluedroid/stack/gatt/att_protocol.c

@@ -375,6 +375,26 @@ BT_HDR *attp_build_sr_msg(tGATT_TCB *p_tcb, UINT8 op_code, tGATT_SR_MSG *p_msg)
     BT_HDR          *p_cmd = NULL;
     UINT16          offset = 0;
 
+    switch (op_code) {
+    case GATT_RSP_READ_BLOB:
+    case GATT_RSP_PREPARE_WRITE:
+    case GATT_RSP_READ_BY_TYPE:
+    case GATT_RSP_READ:
+    case GATT_HANDLE_VALUE_NOTIF:
+    case GATT_HANDLE_VALUE_IND:
+    case GATT_RSP_ERROR:
+    case GATT_RSP_MTU:
+    /* Need to check the validation of parameter p_msg*/
+        if (p_msg == NULL) {
+            GATT_TRACE_ERROR("Invalid parameters in %s, op_code=0x%x, the p_msg should not be NULL.", __func__, op_code);
+            return NULL;
+        }
+        break;
+
+    default:
+        break;
+    }
+
     switch (op_code) {
     case GATT_RSP_READ_BLOB:
     case GATT_RSP_PREPARE_WRITE: