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kernel: add missing in6_dev_put_clear call to an ipv6 network patch 

Fixes "unregister_netdevice: waiting for lo to become free. Usage count = 1"
messages which started appearing since the update to 4.4.103. That
problem was exposed by upstream commit 76da0704507bb ("ipv6: only call
ip6_route_dev_notify() once for NETDEV_UNREGISTER") backported to 4.4.x
branch in 2417da3f4d6bc.

Fixes: 2b664499cd ("kernel: bump 4.4 to 4.4.103 for 17.01")
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>

(cherry picked from commit 58f7b5b96c)
This commit is contained in:
Felix Fietkau 2018-04-30 14:03:28 +02:00 committed by Rafał Miłecki
parent 81573ea259
commit 999bb66b20
1 changed files with 12 additions and 4 deletions
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16
target/linux/generic/patches-4.4/670-ipv6-allow-rejecting-with-source-address-failed-policy.patch
View File

@ -202,7 +202,15 @@ Signed-off-by: Jonas Gorski <jogo@openwrt.org>
net->ipv6.ip6_blk_hole_entry->dst.dev = dev;
net->ipv6.ip6_blk_hole_entry->rt6i_idev = in6_dev_get(dev);
#endif
@@ -3605,6 +3644,17 @@ static int __net_init ip6_route_net_init
@@ -3390,6 +3429,7 @@ static int ip6_route_dev_notify(struct n
in6_dev_put(net->ipv6.ip6_null_entry->rt6i_idev);
#ifdef CONFIG_IPV6_MULTIPLE_TABLES
in6_dev_put(net->ipv6.ip6_prohibit_entry->rt6i_idev);
+ in6_dev_put(net->ipv6.ip6_policy_failed_entry->rt6i_idev);
in6_dev_put(net->ipv6.ip6_blk_hole_entry->rt6i_idev);
#endif
}
@@ -3605,6 +3645,17 @@ static int __net_init ip6_route_net_init
net->ipv6.ip6_blk_hole_entry->dst.ops = &net->ipv6.ip6_dst_ops;
dst_init_metrics(&net->ipv6.ip6_blk_hole_entry->dst,
ip6_template_metrics, true);
@ -220,7 +228,7 @@ Signed-off-by: Jonas Gorski <jogo@openwrt.org>
#endif
net->ipv6.sysctl.flush_delay = 0;
@@ -3623,6 +3673,8 @@ out:
@@ -3623,6 +3674,8 @@ out:
return ret;
#ifdef CONFIG_IPV6_MULTIPLE_TABLES
@ -229,7 +237,7 @@ Signed-off-by: Jonas Gorski <jogo@openwrt.org>
out_ip6_prohibit_entry:
kfree(net->ipv6.ip6_prohibit_entry);
out_ip6_null_entry:
@@ -3640,6 +3692,7 @@ static void __net_exit ip6_route_net_exi
@@ -3640,6 +3693,7 @@ static void __net_exit ip6_route_net_exi
#ifdef CONFIG_IPV6_MULTIPLE_TABLES
kfree(net->ipv6.ip6_prohibit_entry);
kfree(net->ipv6.ip6_blk_hole_entry);
@ -237,7 +245,7 @@ Signed-off-by: Jonas Gorski <jogo@openwrt.org>
#endif
dst_entries_destroy(&net->ipv6.ip6_dst_ops);
}
@@ -3713,6 +3766,9 @@ void __init ip6_route_init_special_entri
@@ -3713,6 +3767,9 @@ void __init ip6_route_init_special_entri
init_net.ipv6.ip6_prohibit_entry->rt6i_idev = in6_dev_get(init_net.loopback_dev);
init_net.ipv6.ip6_blk_hole_entry->dst.dev = init_net.loopback_dev;
init_net.ipv6.ip6_blk_hole_entry->rt6i_idev = in6_dev_get(init_net.loopback_dev);