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Subject[PATCH 4.9 028/130] net: propagate dev_get_valid_name return code
Date
4.9-stable review patch.  If anyone has any objections, please let me know.

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

From: Li RongQing <lirongqing@baidu.com>

[ Upstream commit 7892bd081045222b9e4027fec279a28d6fe7aa66 ]

if dev_get_valid_name failed, propagate its return code

and remove the setting err to ENODEV, it will be set to
0 again before dev_change_net_namespace exits.

Signed-off-by: Li RongQing <lirongqing@baidu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/core/dev.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -7945,7 +7945,8 @@ int dev_change_net_namespace(struct net_
/* We get here if we can't use the current device name */
if (!pat)
goto out;
- if (dev_get_valid_name(net, dev, pat) < 0)
+ err = dev_get_valid_name(net, dev, pat);
+ if (err < 0)
goto out;
}

@@ -7957,7 +7958,6 @@ int dev_change_net_namespace(struct net_
dev_close(dev);

/* And unlink it from device chain */
- err = -ENODEV;
unlist_netdevice(dev);

synchronize_net();

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