Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
Subject: Re: net/tipc: recursive locking in tipc_link_reset
To:     Dmitry Vyukov <dvyukov@google.com>,
        Jon Maloy <jon.maloy@ericsson.com>,
        David Miller <davem@davemloft.net>,
        netdev <netdev@vger.kernel.org>,
        <tipc-discussion@lists.sourceforge.net>,
        LKML <linux-kernel@vger.kernel.org>
References: <CACT4Y+bcxEz=P2E5TRj6A1qeCOQ+WtWR44WGLzqdDttLzD393A@mail.gmail.com>
 <CACT4Y+Ym3_NuqWrgHXWfTahWTm17xi_2gjy8hvuDeyUCPuYXUQ@mail.gmail.com>
From:   Ying Xue <ying.xue@windriver.com>
Message-ID: <97d8c196-cd11-8859-fc14-ed12191f52af@windriver.com>
Date:   Thu, 11 Oct 2018 20:03:28 +0800
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101
 Thunderbird/52.9.1
MIME-Version: 1.0
In-Reply-To: <CACT4Y+Ym3_NuqWrgHXWfTahWTm17xi_2gjy8hvuDeyUCPuYXUQ@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
Content-Language: en-US
Content-Transfer-Encoding: 7bit
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

On 10/11/2018 03:59 PM, Dmitry Vyukov wrote:
> On Thu, Oct 11, 2018 at 9:55 AM, Dmitry Vyukov <dvyukov@google.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.

Thanks,
Ying