diff --git a/drivers/block/ublk_drv.c b/drivers/block/ublk_drv.c
index fbcb7c2ff851..5b0c885dc38f 100644
--- a/drivers/block/ublk_drv.c
+++ b/drivers/block/ublk_drv.c
@@ -1310,6 +1310,11 @@ static blk_status_t ublk_queue_rq(struct blk_mq_hw_ctx *hctx,
 	if (ublk_nosrv_should_queue_io(ubq) && unlikely(ubq->force_abort))
 		return BLK_STS_IOERR;
 
+	/*
+	 * ->canceling has to be handled after ->force_abort and ->fail_io
+	 * is dealt with, otherwise this request may not be failed in case
+	 * of recovery, and cause hang when deleting disk
+	 */
 	if (unlikely(ubq->canceling)) {
 		__ublk_abort_rq(ubq, rq);
 		return BLK_STS_OK;