From: Wang Qing <wangqing@xxxxxxxx>
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@xxxxxxxxxxxxxxxxxxxxxxxxx
Signed-off-by: Wang Qing <wangqing@xxxxxxxx>
Signed-off-by: Guoqing Jiang <jiangguoqing@xxxxxxxxxx>
---
V2 changes: Correct the fixes tag and mail address.
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 b7d663736d35..c38317979f74 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);
}
/*
--
2.25.1
