From 16ad3db3b24cd9f70aa24e93cef0d4a83dece7ac Mon Sep 17 00:00:00 2001 From: Wang Qing Date: Tue, 6 Jul 2021 12:00:16 +0800 Subject: [PATCH] nbd: fix order of cleaning up the queue and freeing the tagset We must release the queue before freeing the tagset. Fixes: 4af5f2e03013 ("nbd: use blk_mq_alloc_disk and blk_cleanup_disk") Reported-and-tested-by: syzbot+9ca43ff47167c0ee3466@syzkaller.appspotmail.com Signed-off-by: Wang Qing Signed-off-by: Guoqing Jiang Reviewed-by: Christoph Hellwig Link: https://lore.kernel.org/r/20210706040016.1360412-1-guoqing.jiang@linux.dev Signed-off-by: Jens Axboe --- drivers/block/nbd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c index b7d663736d35b..c38317979f74e 100644 --- a/drivers/block/nbd.c +++ b/drivers/block/nbd.c @@ -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); } /* -- 2.39.5