linux-kernel - Re: [PATCH 5.19 000/207] 5.19.12-rc1 review

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Date:   Fri, 30 Sep 2022 07:16:23 +0900
From:   Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>
To:     Naresh Kamboju <naresh.kamboju@...aro.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     linux-kernel@...r.kernel.org, stable@...r.kernel.org,
        torvalds@...ux-foundation.org, akpm@...ux-foundation.org,
        linux@...ck-us.net, shuah@...nel.org, patches@...nelci.org,
        lkft-triage@...ts.linaro.org, pavel@...x.de, jonathanh@...dia.com,
        f.fainelli@...il.com, sudipm.mukherjee@...il.com,
        slade@...dewatkins.com, Johannes Berg <johannes.berg@...el.com>,
        Hillf Danton <hdanton@...a.com>,
        Anders Roxell <anders.roxell@...aro.org>,
        Arnd Bergmann <arnd@...db.de>
Subject: Re: [PATCH 5.19 000/207] 5.19.12-rc1 review

On 2022/09/30 0:43, Naresh Kamboju wrote:
> Anders bisected this reported problem [1] and found this commit caused
> deadlock on all arm64 devices.
> 
>> Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>
>>     workqueue: don't skip lockdep work dependency in cancel_work_sync()

My patch itself is correct; just started reporting possibility of deadlock.
You will see several reports like this, but that is an expected result.

> 
> 
> [1] https://lore.kernel.org/stable/CA+G9fYtxogp--B0Em6VCL0C3wwVFXa6xW-Rq2kQk3br+FPGLgg@mail.gmail.com/

The line which causes this report will be removed by commit bb87672562f871ed
("Bluetooth: Remove update_scan hci_request dependancy").