From: Christoph Hellwig <hch@xxxxxx>
[ Upstream commit 2bd645b2d3f0bacadaa6037f067538e1cd4e42ef ]
bdget_disk needs to be paired with bdput to not leak a reference
on the block device inode.
Fixes: 08ba91ee6e2c ("nbd: Add the nbd NBD_DISCONNECT_ON_CLOSE config flag.")
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
Reviewed-by: Josef Bacik <josef@xxxxxxxxxxxxxx>
Signed-off-by: Jens Axboe <axboe@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/block/nbd.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
index d76fca629c143..36c46fe078556 100644
--- a/drivers/block/nbd.c
+++ b/drivers/block/nbd.c
@@ -1517,6 +1517,7 @@ static void nbd_release(struct gendisk *disk, fmode_t mode)
if (test_bit(NBD_RT_DISCONNECT_ON_CLOSE, &nbd->config->runtime_flags) &&
bdev->bd_openers == 0)
nbd_disconnect_and_put(nbd);
+ bdput(bdev);
nbd_config_put(nbd);
nbd_put(nbd);
--
2.27.0
