[PATCH 4.19 062/148] blocklayoutdriver: Fix reference leak of pnfs_device_node

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4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Benjamin Coddington <bcodding@xxxxxxxxxx>

[ Upstream commit 1530827b90025cdf80c9b0d07a166d045a0a7b81 ]

The error path for blocklayout's device lookup is missing a reference drop
for the case where a lookup finds the device, but the device is marked with
NFS_DEVICEID_UNAVAILABLE.

Fixes: b3dce6a2f060 ("pnfs/blocklayout: handle transient devices")
Signed-off-by: Benjamin Coddington <bcodding@xxxxxxxxxx>
Signed-off-by: Anna Schumaker <Anna.Schumaker@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 fs/nfs/blocklayout/blocklayout.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/fs/nfs/blocklayout/blocklayout.c b/fs/nfs/blocklayout/blocklayout.c
index 06cb0c1d9aee..a2bca78b80ab 100644
--- a/fs/nfs/blocklayout/blocklayout.c
+++ b/fs/nfs/blocklayout/blocklayout.c
@@ -604,6 +604,8 @@ bl_find_get_deviceid(struct nfs_server *server,
 		nfs4_delete_deviceid(node->ld, node->nfs_client, id);
 		goto retry;
 	}
+
+	nfs4_put_deviceid_node(node);
 	return ERR_PTR(-ENODEV);
 }
 
-- 
2.43.0







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