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

[David Ahern]

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