err = guc_action_register_ct_buffer(ct_to_guc(ct), type,
                                            desc_addr, buff_addr, size);
        if (unlikely(err))
-               CT_ERROR(ct, "Failed to register %s buffer (err=%d)\n",
-                        guc_ct_buffer_type_to_str(type), err);
+               CT_ERROR(ct, "Failed to register %s buffer (%pe)\n",
+                        guc_ct_buffer_type_to_str(type), ERR_PTR(err));
        return err;
 }
 
        int err = guc_action_deregister_ct_buffer(ct_to_guc(ct), type);
 
        if (unlikely(err))
-               CT_ERROR(ct, "Failed to deregister %s buffer (err=%d)\n",
-                        guc_ct_buffer_type_to_str(type), err);
+               CT_ERROR(ct, "Failed to deregister %s buffer (%pe)\n",
+                        guc_ct_buffer_type_to_str(type), ERR_PTR(err));
        return err;
 }