[24/88] ipv6: assign rt6_info to inet6_ifaddr in init_loopback

From: Steven Rostedt
Date: Tue Aug 13 2013 - 12:04:48 EST stable review patch.
If anyone has any objections, please let me know.


From: Gao feng <gaofeng@xxxxxxxxxxxxxx>

[ Upstream commit 534c877928a16ae5f9776436a497109639bf67dc ]

Commit 25fb6ca4ed9cad72f14f61629b68dc03c0d9713f
"net IPv6 : Fix broken IPv6 routing table after loopback down-up"
forgot to assign rt6_info to the inet6_ifaddr.
When disable the net device, the rt6_info which allocated
in init_loopback will not be destroied in __ipv6_ifa_notify.

This will trigger the waring message below
[23527.916091] unregister_netdevice: waiting for tap0 to become free. Usage count = 1

Reported-by: Arkadiusz Miskiewicz <a.miskiewicz@xxxxxxxxx>
Signed-off-by: Gao feng <gaofeng@xxxxxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Steven Rostedt <rostedt@xxxxxxxxxxx>
net/ipv6/addrconf.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index dd8549a..72d9dea 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -2430,8 +2430,10 @@ static void init_loopback(struct net_device *dev)
sp_rt = addrconf_dst_alloc(idev, &sp_ifa->addr, 0);

/* Failure cases are ignored */
- if (!IS_ERR(sp_rt))
+ if (!IS_ERR(sp_rt)) {
+ sp_ifa->rt = sp_rt;
+ }

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