Re: unregister_netdevice: waiting for eth0 to become free. Usage count = 1

Hi,

On Thu, Aug 10, 2017 at 11:12 AM, John Stultz [off-list ref] wrote:

On Wed, Aug 9, 2017 at 10:41 PM, Wei Wang [off-list ref] wrote:

quoted

Hi John,

Is it possible to try the attached patch?

Thanks so much for the quick turn around!

So I dropped all the reverts you suggested, and applied this one
against 4.13-rc4, but I'm still seeing the problematic behavior.

Does the following one-line fix make a difference?

diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index a640fbcba15d..c145a35763a0 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c

@@ -141,7 +141,7 @@ static void rt6_uncached_list_del(struct rt6_info *rt)
                struct uncached_list *ul = rt->rt6i_uncached_list;

                spin_lock_bh(&ul->lock);
-               list_del(&rt->rt6i_uncached);
+               list_del_init(&rt->rt6i_uncached);
                spin_unlock_bh(&ul->lock);
        }
 }