[PATCH 5.10 355/509] NTB: ntb_transport: fix possible memory leak while device_register() fails

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From: Yang Yingliang <yangyingliang@xxxxxxxxxx>

[ Upstream commit 8623ccbfc55d962e19a3537652803676ad7acb90 ]

If device_register() returns error, the name allocated by
dev_set_name() need be freed. As comment of device_register()
says, it should use put_device() to give up the reference in
the error path. So fix this by calling put_device(), then the
name can be freed in kobject_cleanup(), and client_dev is freed
in ntb_transport_client_release().

Fixes: fce8a7bb5b4b ("PCI-Express Non-Transparent Bridge Support")
Signed-off-by: Yang Yingliang <yangyingliang@xxxxxxxxxx>
Reviewed-by: Dave Jiang <dave.jiang@xxxxxxxxx>
Signed-off-by: Jon Mason <jdmason@xxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/ntb/ntb_transport.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/ntb/ntb_transport.c b/drivers/ntb/ntb_transport.c
index 4a02561cfb965..d18cb44765603 100644
--- a/drivers/ntb/ntb_transport.c
+++ b/drivers/ntb/ntb_transport.c
@@ -412,7 +412,7 @@ int ntb_transport_register_client_dev(char *device_name)
 
 		rc = device_register(dev);
 		if (rc) {
-			kfree(client_dev);
+			put_device(dev);
 			goto err;
 		}
 
-- 
2.39.2






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