diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c
index 107513495220..3af79831e717 100644
--- a/block/blk-sysfs.c
+++ b/block/blk-sysfs.c
@@ -1030,7 +1030,6 @@ EXPORT_SYMBOL_GPL(blk_register_queue);
 void blk_unregister_queue(struct gendisk *disk)
 {
 	struct request_queue *q = disk->queue;
-	bool has_elevator;
 
 	if (WARN_ON(!q))
 		return;
@@ -1046,7 +1045,6 @@ void blk_unregister_queue(struct gendisk *disk)
 	 */
 	mutex_lock(&q->sysfs_lock);
 	blk_queue_flag_clear(QUEUE_FLAG_REGISTERED, q);
-	has_elevator = !!q->elevator;
 	mutex_unlock(&q->sysfs_lock);
 
 	mutex_lock(&q->sysfs_dir_lock);
@@ -1061,7 +1059,11 @@ void blk_unregister_queue(struct gendisk *disk)
 	kobject_del(&q->kobj);
 	blk_trace_remove_sysfs(disk_to_dev(disk));
 
-	if (has_elevator)
+	/*
+	 * q->kobj has been removed, so it is safe to check if elevator
+	 * exists without holding q->sysfs_lock.
+	 */
+	if (q->elevator)
 		elv_unregister_queue(q);
 	mutex_unlock(&q->sysfs_dir_lock);