diff --git a/block/blk-iocost.c b/block/blk-iocost.c
index 30dda16bb879127f73104547c41e571cd8d6bf4d..09195fdd29430a71c608519bba8f33df29c86a04 100644
--- a/block/blk-iocost.c
+++ b/block/blk-iocost.c
@@ -1391,8 +1391,11 @@ static void iocg_pay_debt(struct ioc_gq *iocg, u64 abs_vpay,
 	lockdep_assert_held(&iocg->ioc->lock);
 	lockdep_assert_held(&iocg->waitq.lock);
 
-	/* make sure that nobody messed with @iocg */
-	WARN_ON_ONCE(list_empty(&iocg->active_list));
+	/*
+	 * make sure that nobody messed with @iocg. Check iocg->online
+	 * to avoid warn when removing blkcg or disk.
+	 */
+	WARN_ON_ONCE(list_empty(&iocg->active_list) && iocg->online);
 	WARN_ON_ONCE(iocg->inuse > 1);
 
 	iocg->abs_vdebt -= min(abs_vpay, iocg->abs_vdebt);