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

From David Ahern <dsa@cumulusnetworks.com>
Newsgroups linux.kernel
Subject Re: [REGRESSION, bisect] net: ipv6: unregister_netdevice: waiting for lo to become free. Usage count = 2
Date 2016-03-02 22:10 +0100
Message-ID <r8mbV-5gA-13@gated-at.bofh.it> (permalink)
References <r8lIR-4R2-9@gated-at.bofh.it> <r8lIR-4R2-11@gated-at.bofh.it> <r8lIR-4R2-7@gated-at.bofh.it>
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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

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[REGRESSION, bisect] net: ipv6: unregister_netdevice: waiting for lo  to become free. Usage count = 2 Jeremiah Mahler <jmmahler@gmail.com> - 2016-03-02 21:40 +0100
  Re: [REGRESSION, bisect] net: ipv6: unregister_netdevice: waiting for  lo to become free. Usage count = 2 David Ahern <dsa@cumulusnetworks.com> - 2016-03-02 22:10 +0100
    Re: [REGRESSION, bisect] net: ipv6: unregister_netdevice: waiting  for lo to become free. Usage count = 2 Jeremiah Mahler <jmmahler@gmail.com> - 2016-03-03 02:30 +0100
      RE: [REGRESSION, bisect] net: ipv6: unregister_netdevice: waiting for  lo to become free. Usage count = 2 Dexuan Cui <decui@microsoft.com> - 2016-03-03 06:30 +0100

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