4.2-stable review patch. If anyone has any objections, please let me know.
------------------
From: Sabrina Dubroca <sd@xxxxxxxxxxxxxxx>
[ 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@xxxxxxxxxx>
Signed-off-by: Sabrina Dubroca <sd@xxxxxxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
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 */
--
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