[PATCH -next v3 1/2] nbd: Fix incorrect error handle when first_minor big than '0xff' in nbd_dev_add

Ye Bin
2021-11-01T06:17:36Z

If first_minor big than '0xff' goto out_free_idr label, this will miss
cleanup disk.

Fixes: b1a811633f73 ("block: nbd: add sanity check for first_minor")
Signed-off-by: Ye Bin <yebin10@huawei.com>
---
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 b47b2a87ae8f..096883ab9b76 100644
--- a/drivers/block/nbd.c
+++ b/drivers/block/nbd.c
@@ -1809,7 +1809,7 @@ static struct nbd_device *nbd_dev_add(int index, unsigned int refs)
disk->first_minor = index << part_shift;
if (disk->first_minor > 0xff) {
err = -EINVAL;
- goto out_free_idr;