From: Vasily Averin <vvs@virtuozzo.com>
Date: Sun, 12 Nov 2017 19:28:46 +0000 (+0300)
Subject: netdev: exit_net cleanup check added
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=ee21b18b6bdbb17a6e0b26255d2f662baf0d8409;p=openwrt%2Fstaging%2Fblogic.git

netdev: exit_net cleanup check added

Be sure that dev_base_head list initialized in net_init hook was return
to initial state

Signed-off-by: Vasily Averin <vvs@virtuozzo.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/core/dev.c b/net/core/dev.c
index 30b5fe32c525..658337bf33e4 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -8667,6 +8667,8 @@ static void __net_exit netdev_exit(struct net *net)
 {
 	kfree(net->dev_name_head);
 	kfree(net->dev_index_head);
+	if (net != &init_net)
+		WARN_ON_ONCE(!list_empty(&net->dev_base_head));
 }
 
 static struct pernet_operations __net_initdata netdev_net_ops = {