netdev - Re: circular locking dependency splat due to f9eb8aea2a1e

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Message-ID: <CANn89iLkcni48PyrYU9SKm3dXGJaAPmf366BfZc30+4U7ea45g@mail.gmail.com>
Date:	Wed, 8 Jun 2016 14:44:46 -0700
From:	Eric Dumazet <edumazet@...gle.com>
To:	David Ahern <dsa@...ulusnetworks.com>
Cc:	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: circular locking dependency splat due to f9eb8aea2a1e

All devices that are missing busylock were already buggy ;)

On Wed, Jun 8, 2016 at 1:59 PM, David Ahern <dsa@...ulusnetworks.com> wrote:
> On 6/8/16 2:32 PM, Eric Dumazet wrote:
>>
>> On Wed, Jun 8, 2016 at 1:31 PM, David Ahern <dsa@...ulusnetworks.com>
>> wrote:
>>>
>>> On 6/8/16 2:30 PM, Eric Dumazet wrote:
>>>>
>>>>
>>>>
>>>> It looks VRF was already lacking annotation for busylock then ?
>>>
>>>
>>>
>>> I sent a patch adding IFF_NO_QUEUE flag
>>>
>>
>> OK, but we still need the fix, in case a qdisc is installed on vrf
>> (who knows...)
>
>
> Sure. What about other virtual devices? e.g., I can generate the same splat
> with ipvlan.