4.14-stable patches

[thirdparty/kernel/stable-queue.git] / releases / 3.4.51 / ipv6-assign-rt6_info-to-inet6_ifaddr-in-init_loopback.patch

From 1814b8d9a23c63988bdd6083ee25b87403a2bbae Mon Sep 17 00:00:00 2001
From: Gao feng <gaofeng@cn.fujitsu.com>
Date: Sun, 2 Jun 2013 22:16:21 +0000
Subject: ipv6: assign rt6_info to inet6_ifaddr in init_loopback

From: Gao feng <gaofeng@cn.fujitsu.com>

[ 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@gmail.com>
Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 net/ipv6/addrconf.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -2432,8 +2432,10 @@ static void init_loopback(struct net_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;
 				ip6_ins_rt(sp_rt);
+			}
 		}
 		read_unlock_bh(&idev->lock);
 	}