diff --git a/block/blk-mq-sched.c b/block/blk-mq-sched.c
index b2545b98c94a1d4e25c1b4afa7137b40946f3db5..972bd9a3a9779495565ce51b85096f54ae81b438 100644
--- a/block/blk-mq-sched.c
+++ b/block/blk-mq-sched.c
@@ -663,6 +663,7 @@ void blk_mq_exit_sched(struct request_queue *q, struct elevator_queue *e)
 {
 	struct blk_mq_hw_ctx *hctx;
 	unsigned int i;
+	unsigned int flags = 0;
 
 	queue_for_each_hw_ctx(q, hctx, i) {
 		blk_mq_debugfs_unregister_sched_hctx(hctx);
@@ -670,12 +671,13 @@ void blk_mq_exit_sched(struct request_queue *q, struct elevator_queue *e)
 			e->type->ops.exit_hctx(hctx, i);
 			hctx->sched_data = NULL;
 		}
+		flags = hctx->flags;
 	}
 	blk_mq_debugfs_unregister_sched(q);
 	if (e->type->ops.exit_sched)
 		e->type->ops.exit_sched(e);
 	blk_mq_sched_tags_teardown(q);
-	if (blk_mq_is_sbitmap_shared(q->tag_set->flags))
+	if (blk_mq_is_sbitmap_shared(flags))
 		blk_mq_exit_sched_shared_sbitmap(q);
 	q->elevator = NULL;
 }