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nbd: fix order of cleaning up the queue and freeing the tagset 

We must release the queue before freeing the tagset.

Fixes: 4af5f2e030 ("nbd: use blk_mq_alloc_disk and blk_cleanup_disk")
Reported-and-tested-by: syzbot+9ca43ff47167c0ee3466@syzkaller.appspotmail.com
Signed-off-by: Wang Qing <wangqing@vivo.com>
Signed-off-by: Guoqing Jiang <jiangguoqing@kylinos.cn>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20210706040016.1360412-1-guoqing.jiang@linux.dev
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Wang Qing 2021-07-06 12:00:16 +08:00 committed by Jens Axboe
parent 58b63e0f55
commit 16ad3db3b2
1 changed files with 1 additions and 1 deletions
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2
drivers/block/nbd.c
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@ -239,8 +239,8 @@ static void nbd_dev_remove(struct nbd_device *nbd)
if (disk) {
del_gendisk(disk);
blk_mq_free_tag_set(&nbd->tag_set);
blk_cleanup_disk(disk);
blk_mq_free_tag_set(&nbd->tag_set);
}
/*