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ipv6: fix missing in6_ifa_put in addrconf

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Fix ref count bug introduced by

commit 2de795707294972f6c34bae9de713e502c431296
Author: Lorenzo Colitti <lorenzo@google.com>
Date:   Wed Oct 27 18:16:49 2010 +0000

ipv6: addrconf: don't remove address state on ifdown if the address
is being kept

Fix logic so that addrconf_ifdown() decrements the inet6_ifaddr
refcnt correctly with in6_ifa_put().

Reported-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: John Fastabend <john.r.fastabend@intel.com>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
John Fastabend 2010-11-15 20:29:21 +00:00 committed by David S. Miller
parent b5e4156743
commit 9d82ca98f7
1 changed files with 3 additions and 3 deletions
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6
net/ipv6/addrconf.c
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@ -2754,13 +2754,13 @@ static int addrconf_ifdown(struct net_device *dev, int how)
ifa->state = INET6_IFADDR_STATE_DEAD;
spin_unlock_bh(&ifa->state_lock);
if (state == INET6_IFADDR_STATE_DEAD) {
in6_ifa_put(ifa);
} else {
if (state != INET6_IFADDR_STATE_DEAD) {
__ipv6_ifa_notify(RTM_DELADDR, ifa);
atomic_notifier_call_chain(&inet6addr_chain,
NETDEV_DOWN, ifa);
}
in6_ifa_put(ifa);
write_lock_bh(&idev->lock);
}
}