linux-kernel - Re: Packet gets stuck in NOLOCK pfifo

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Date:   Wed, 1 Jul 2020 15:02:07 -0700
From:   Josh Hunt <johunt@...mai.com>
To:     Cong Wang <xiyou.wangcong@...il.com>
Cc:     jonas.bonn@...rounds.com, Paolo Abeni <pabeni@...hat.com>,
        Michael Zhivich <mzhivich@...mai.com>,
        David Miller <davem@...emloft.net>,
        John Fastabend <john.fastabend@...il.com>,
        LKML <linux-kernel@...r.kernel.org>,
        Linux Kernel Network Developers <netdev@...r.kernel.org>
Subject: Re: Packet gets stuck in NOLOCK pfifo_fast qdisc


On 7/1/20 12:58 PM, Cong Wang wrote:
> On Wed, Jul 1, 2020 at 9:05 AM Cong Wang <xiyou.wangcong@...il.com> wrote:
>>
>> On Tue, Jun 30, 2020 at 2:08 PM Josh Hunt <johunt@...mai.com> wrote:
>>> Do either of you know if there's been any development on a fix for this
>>> issue? If not we can propose something.
>>
>> If you have a reproducer, I can look into this.
> 
> Does the attached patch fix this bug completely?
> 
> Thanks.
> 

Hey Cong

Unfortunately we don't have a reproducer that would be easy to share, 
however your patch makes sense to me at a high-level. We will test and 
let you know if this fixes our problem.

Thanks!
Josh