linux-kernel - [PATCH 5.19 168/207] blk-mq: fix error handling in __blk_mq_alloc

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Message-Id: <20220926100814.177713877@linuxfoundation.org>
Date:   Mon, 26 Sep 2022 12:12:37 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Christoph Hellwig <hch@....de>,
        Ming Lei <ming.lei@...hat.com>, Jens Axboe <axboe@...nel.dk>
Subject: [PATCH 5.19 168/207] blk-mq: fix error handling in __blk_mq_alloc_disk

From: Christoph Hellwig <hch@....de>

commit 0a3e5cc7bbfcd571a2e53779ef7d7aa3c57d5432 upstream.

To fully clean up the queue if the disk allocation fails we need to
call blk_mq_destroy_queue and not just blk_put_queue.

Fixes: 6f8191fdf41d ("block: simplify disk shutdown")
Signed-off-by: Christoph Hellwig <hch@....de>
Reviewed-by: Ming Lei <ming.lei@...hat.com>
Link: https://lore.kernel.org/r/20220720130541.1323531-1-hch@lst.de
Signed-off-by: Jens Axboe <axboe@...nel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 block/blk-mq.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -3949,7 +3949,7 @@ struct gendisk *__blk_mq_alloc_disk(stru
 
 	disk = __alloc_disk_node(q, set->numa_node, lkclass);
 	if (!disk) {
-		blk_put_queue(q);
+		blk_mq_destroy_queue(q);
 		return ERR_PTR(-ENOMEM);
 	}
 	set_bit(GD_OWNS_QUEUE, &disk->state);