netdev - Re: net/tipc: recursive locking in tipc_link

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Date:   Thu, 11 Oct 2018 14:11:29 +0200
From:   Dmitry Vyukov <dvyukov@...gle.com>
To:     Ying Xue <ying.xue@...driver.com>
Cc:     Jon Maloy <jon.maloy@...csson.com>,
        David Miller <davem@...emloft.net>,
        netdev <netdev@...r.kernel.org>,
        tipc-discussion@...ts.sourceforge.net,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: net/tipc: recursive locking in tipc_link_reset

On Thu, Oct 11, 2018 at 2:03 PM, Ying Xue <ying.xue@...driver.com> wrote:
>>> Hi,
>>>
>>> I am getting the following error while booting the latest kernel on
>>> bb2d8f2f61047cbde08b78ec03e4ebdb01ee5434 (Oct 10). Config is attached.
>>>
>>> Since this happens during boot, this makes LOCKDEP completely
>>> unusable, does not allow to discover any other locking issues and
>>> masks all new bugs being introduced into kernel.
>>> Please fix asap.
>>> Thanks
>> -parthasarathy.bhuvaragan address as it gives me bounces
>> but this is highly likely due to:
>>
>> commit 3f32d0be6c16b902b687453c962d17eea5b8ea19
>> Author: Parthasarathy Bhuvaragan
>> Date:   Tue Sep 25 22:09:10 2018 +0200
>>
>>     tipc: lock wakeup & inputq at tipc_link_reset()
>>
>>
>
> Dmitry, I agree with you. The complaint should be caused by the commit
> above. Please try to verify the patch:
> https://patchwork.ozlabs.org/patch/982447.


I trust you for testing ;)

Thanks for the quick fix!