diff --git a/block/blk-mq.c b/block/blk-mq.c
index 0392b014ac89d7776e781c42383405b80d56ffd0..e1253b18516bdafebabbbd0f5167538003cf604c 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -515,6 +515,10 @@ struct request *blk_mq_alloc_request_hctx(struct request_queue *q,
 		return ERR_PTR(-EXDEV);
 	}
 	cpu = cpumask_first_and(alloc_data.hctx->cpumask, cpu_online_mask);
+	if (cpu >= nr_cpu_ids) {
+		blk_queue_exit(q);
+		return ERR_PTR(-EXDEV);
+	}
 	alloc_data.ctx = __blk_mq_get_ctx(q, cpu);
 
 	rq = blk_mq_get_request(q, NULL, op, &alloc_data);