Patch "can: vxcan: improve handling of missing peer name attribute" has been added to the 4.14-stable tree

Patch "can: vxcan: improve handling of missing peer name attribute" has been added to the 4.14-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    can: vxcan: improve handling of missing peer name attribute

to the 4.14-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     can-vxcan-improve-handling-of-missing-peer-name-attribute.patch
and it can be found in the queue-4.14 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From b4c2951a4833e66f1bbfe65ddcd4fdcdfafe5e8f Mon Sep 17 00:00:00 2001
From: Oliver Hartkopp <socketcan@hartkopp.net>
Date: Sat, 2 Dec 2017 18:48:52 +0100
Subject: can: vxcan: improve handling of missing peer name attribute

From: Oliver Hartkopp <socketcan@hartkopp.net>

commit b4c2951a4833e66f1bbfe65ddcd4fdcdfafe5e8f upstream.

Picking up the patch from Serhey Popovych (commit 191cdb3822e5df6b3c8,
"veth: Be more robust on network device creation when no attributes").

When the peer name attribute is not provided the former implementation tries
to register the given device name twice ... which leads to -EEXIST.
If only one device name is given apply an automatic generated and valid name
for the peer.

Cc: Serhey Popovych <serhe.popovych@gmail.com>
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/net/can/vxcan.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/net/can/vxcan.c
+++ b/drivers/net/can/vxcan.c
@@ -194,7 +194,7 @@ static int vxcan_newlink(struct net *net
 		tbp = peer_tb;
 	}
 
-	if (tbp[IFLA_IFNAME]) {
+	if (ifmp && tbp[IFLA_IFNAME]) {
 		nla_strlcpy(ifname, tbp[IFLA_IFNAME], IFNAMSIZ);
 		name_assign_type = NET_NAME_USER;
 	} else {


Patches currently in stable-queue which might be from socketcan@hartkopp.net are

queue-4.14/can-vxcan-improve-handling-of-missing-peer-name-attribute.patch