Re: [REGRESSION, bisect] net: ipv6: unregister_netdevice: waiting for lo to become free. Usage count = 2

[Jeremiah Mahler]

Hi David,

On Wed, Mar 02, 2016 at 01:00:21PM -0800, David Ahern wrote:
> On 3/2/16 12:31 PM, Jeremiah Mahler wrote:
> >>On Tue, Mar 01, 2016 at 08:11:54AM +0000, Dexuan Cui wrote:
> >>>Hi, I got this line every 10 seconds with today's linux-next in a Hyper-V guest, even
> >>>when I didn't configure any NIC for the guest:
> >>>
> >>>[   72.604249] unregister_netdevice: waiting for lo to become free. Usage count = 2
> >>>[   82.708170] unregister_netdevice: waiting for lo to become free. Usage count = 2
> >>>[   92.788079] unregister_netdevice: waiting for lo to become free. Usage count = 2
> >>>[  102.808132] unregister_netdevice: waiting for lo to become free. Usage count = 2
> >>>[  112.928166] unregister_netdevice: waiting for lo to become free. Usage count = 2
> >>>[  122.952069] unregister_netdevice: waiting for lo to become free. Usage count = 2
> >>>
> >>>I don't think this is related to the underlying host, since it's related to "lo".
> 
> This should fix it:
>     https://patchwork.ozlabs.org/patch/591102/
> 
> 
> David

That patch fixes the problem on my machine.
Thanks for the quick fix :-)

-- 
- Jeremiah Mahler