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Commit 2c12a74c authored by Michal Wrobel's avatar Michal Wrobel Committed by David S. Miller
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[IPV6]: anycast refcnt fix 



This patch fixes a bug in Linux IPv6 stack which caused anycast address
to be added to a device prior DAD has been completed. This led to
incorrect reference count which resulted in infinite wait for
unregister_netdevice completion on interface removal.

Signed-off-by: default avatarMichal Wrobel <xmxwx@asn.pl>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 3a765aa5

net/ipv6/addrconf.c

+2 −0
Original line number Original line Diff line number Diff line
@@ -400,6 +400,8 @@ static void dev_forward_change(struct inet6_dev *idev) 
			ipv6_dev_mc_dec(dev, &addr);

			ipv6_dev_mc_dec(dev, &addr);

	}

	}

	for (ifa=idev->addr_list; ifa; ifa=ifa->if_next) {

	for (ifa=idev->addr_list; ifa; ifa=ifa->if_next) {

		if (ifa->flags&IFA_F_TENTATIVE)

			continue;

		if (idev->cnf.forwarding)

		if (idev->cnf.forwarding)

			addrconf_join_anycast(ifa);

			addrconf_join_anycast(ifa);

		else

		else