[3.13.y-ckt stable] Patch "caif: remove wrong dev_net_set() call" has been added to staging queue

[Kamal Mostafa]

This is a note to let you know that I have just added a patch titled

    caif: remove wrong dev_net_set() call

to the linux-3.13.y-queue branch of the 3.13.y-ckt extended stable tree 
which can be found at:

 http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.13.y-queue

This patch is scheduled to be released in version 3.13.11-ckt17.

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.13.y-ckt tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Kamal

------

>From 5bfcd70e36841ebe5f01d4e5d424e599752ff1c3 Mon Sep 17 00:00:00 2001
From: Nicolas Dichtel <nicolas.dichtel at 6wind.com>
Date: Mon, 26 Jan 2015 22:28:13 +0100
Subject: caif: remove wrong dev_net_set() call
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

commit 8997c27ec41127bf57421cc0205413d525421ddc upstream.

src_net points to the netns where the netlink message has been received. This
netns may be different from the netns where the interface is created (because
the user may add IFLA_NET_NS_[PID|FD]). In this case, src_net is the link netns.

It seems wrong to override the netns in the newlink() handler because if it
was not already src_net, it means that the user explicitly asks to create the
netdevice in another netns.

CC: Sjur Brændeland <sjur.brandeland at stericsson.com>
CC: Dmitry Tarnyagin <dmitry.tarnyagin at lockless.no>
Fixes: 8391c4aab1aa ("caif: Bugfixes in CAIF netdevice for close and flow control")
Fixes: c41254006377 ("caif-hsi: Add rtnl support")
Signed-off-by: Nicolas Dichtel <nicolas.dichtel at 6wind.com>
Signed-off-by: David S. Miller <davem at davemloft.net>
Signed-off-by: Kamal Mostafa <kamal at canonical.com>
---
 drivers/net/caif/caif_hsi.c | 1 -
 net/caif/chnl_net.c         | 1 -
 2 files changed, 2 deletions(-)

diff --git a/drivers/net/caif/caif_hsi.c b/drivers/net/caif/caif_hsi.c
index 5e40a8b..b3b922a 100644
--- a/drivers/net/caif/caif_hsi.c
+++ b/drivers/net/caif/caif_hsi.c
@@ -1415,7 +1415,6 @@ static int caif_hsi_newlink(struct net *src_net, struct net_device *dev,

 	cfhsi = netdev_priv(dev);
 	cfhsi_netlink_parms(data, cfhsi);
-	dev_net_set(cfhsi->ndev, src_net);

 	get_ops = symbol_get(cfhsi_get_ops);
 	if (!get_ops) {
diff --git a/net/caif/chnl_net.c b/net/caif/chnl_net.c
index 7344a8f..a25a2ed 100644
--- a/net/caif/chnl_net.c
+++ b/net/caif/chnl_net.c
@@ -471,7 +471,6 @@ static int ipcaif_newlink(struct net *src_net, struct net_device *dev,
 	ASSERT_RTNL();
 	caifdev = netdev_priv(dev);
 	caif_netlink_parms(data, &caifdev->conn_req);
-	dev_net_set(caifdev->netdev, src_net);

 	ret = register_netdevice(dev);
 	if (ret)
--
1.9.1