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From: Cong Wang <xiyou.wangcong@gmail.com>
Date: Tue, 6 Dec 2016 16:10:08 -0800
Message-ID: <CAM_iQpWHYszm0AEdxQJmn6M3rfDGTZkN0+aJNkS9Za1oP8H+xw@mail.gmail.com>
Subject: Re: [PATCH]net:sched:release lock before tcf_dump_walker() normal
 return to avoid deadlock
To: Jamal Hadi Salim <jhs@mojatatu.com>
Cc: Feng Deng <cxdx2006@gmail.com>,
        "David S. Miller" <davem@davemloft.net>,
        Linux Kernel Network Developers <netdev@vger.kernel.org>,
        LKML <linux-kernel@vger.kernel.org>, feng.deng@cortina-access.com,
        Roman Mashak <mrv@mojatatu.com>
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On Tue, Dec 6, 2016 at 5:50 AM, Jamal Hadi Salim <jhs@mojatatu.com> wrote:
> On 16-12-06 12:36 AM, Feng Deng wrote:
>>
>> From: Feng Deng<cxdx2006@gmail.com>
>>
>> release lock before tcf_dump_walker() normal return to avoid deadlock
>>
>
> /Scratching my head.
>
> I am probably missing something obvious.
> What are the condition under which this deadlock will happen?
> Do you have a testcase we can try?

I don't even see a patch (tried Google too).