netdev - [PATCH net v2 03/03] [PATCH] vxlan: fix crash on module removal

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Message-ID: <20130610131315.384c5b61@nehalam.linuxnetplumber.net>
Date:	Mon, 10 Jun 2013 13:13:15 -0700
From:	Stephen Hemminger <stephen@...workplumber.org>
To:	davem@...emloft.net
Cc:	netdev@...r.kernel.org,
	Stephen Hemminger <stephen@...workplumber.org>
Subject: [PATCH net v2 03/03] [PATCH] vxlan: fix crash on module removal

If vxlan is removed with active vxlan's it would crash because
rtnl_link_unregister (which calls vxlan_dellink), was invoked
before unregister_pernet_device (which calls vxlan_stop).

Signed-off-by: Stephen Hemminger <stephen@...workplumber.org>
---
Should goto stable

--- a/drivers/net/vxlan.c	2013-06-06 08:29:07.910429205 -0700
+++ b/drivers/net/vxlan.c	2013-06-06 09:38:52.091675246 -0700
@@ -1785,8 +1785,9 @@ late_initcall(vxlan_init_module);
 
 static void __exit vxlan_cleanup_module(void)
 {
-	rtnl_link_unregister(&vxlan_link_ops);
 	unregister_pernet_device(&vxlan_net_ops);
+	rtnl_link_unregister(&vxlan_link_ops);
+	destroy_workqueue(vxlan_wq);
 	rcu_barrier();
 }
 module_exit(vxlan_cleanup_module);

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