From 2a189f9e57650e9f310ddf4aad75d66c1233a064 Mon Sep 17 00:00:00 2001
From: Sabrina Dubroca <sd@queasysnail.net>
Date: Wed, 4 Nov 2015 14:47:53 +0100
Subject: [PATCH] ipv6: clean up dev_snmp6 proc entry when we fail to
initialize inet6_dev
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>
---
net/ipv6/addrconf.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index d72fa90d6feb..d84742f003a9 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -418,6 +418,7 @@ static struct inet6_dev *ipv6_add_dev(struct net_device *dev)
if (err) {
ipv6_mc_destroy_dev(ndev);
del_timer(&ndev->regen_timer);
+ snmp6_unregister_dev(ndev);
goto err_release;
}
/* protected by rtnl_lock */
--
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