Patch "ipv6: clean up dev_snmp6 proc entry when we fail to initialize inet6_dev" has been added to the 4.2-stable tree

Patch "ipv6: clean up dev_snmp6 proc entry when we fail to initialize inet6_dev" has been added to the 4.2-stable tree

[gregkh]

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

    ipv6: clean up dev_snmp6 proc entry when we fail to initialize inet6_dev

to the 4.2-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:
     ipv6-clean-up-dev_snmp6-proc-entry-when-we-fail-to-initialize-inet6_dev.patch
and it can be found in the queue-4.2 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 foo@baz Tue Nov 17 14:34:38 PST 2015
From: Sabrina Dubroca <sd@queasysnail.net>
Date: Wed, 4 Nov 2015 14:47:53 +0100
Subject: ipv6: clean up dev_snmp6 proc entry when we fail to initialize inet6_dev

From: Sabrina Dubroca <sd@queasysnail.net>

[ Upstream commit 2a189f9e57650e9f310ddf4aad75d66c1233a064 ]

In ipv6_add_dev, when addrconf_sysctl_register fails, we do not clean up
the dev_snmp6 entry that we have already registered for this device.
Call snmp6_unregister_dev in this case.

Fixes: a317a2f19da7d ("ipv6: fail early when creating netdev named all or default")
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 net/ipv6/addrconf.c |    1 +
 1 file changed, 1 insertion(+)

--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -411,6 +411,7 @@ static struct inet6_dev *ipv6_add_dev(st
 	if (err) {
 		ipv6_mc_destroy_dev(ndev);
 		del_timer(&ndev->regen_timer);
+		snmp6_unregister_dev(ndev);
 		goto err_release;
 	}
 	/* protected by rtnl_lock */


Patches currently in stable-queue which might be from sd@queasysnail.net are

queue-4.2/ipv6-clean-up-dev_snmp6-proc-entry-when-we-fail-to-initialize-inet6_dev.patch