linux-kernel - Re: [PATCH] kthread: Fix kthread_mod_delayed_work vs kthread_cancel_delayed_work

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Message-Id: <20210520144845.52755f3af700a902e07e2ee7@linux-foundation.org>
Date:   Thu, 20 May 2021 14:48:45 -0700
From:   Andrew Morton <akpm@...ux-foundation.org>
To:     Martin Liu <liumartin@...gle.com>
Cc:     Nathan Chancellor <nathan@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Petr Mladek <pmladek@...e.com>, Tejun Heo <tj@...nel.org>,
        minchan@...gle.com, www@...gle.com, davidchao@...gle.com,
        jenhaochen@...gle.com, linux-kernel@...r.kernel.org,
        clang-built-linux@...glegroups.com
Subject: Re: [PATCH] kthread: Fix kthread_mod_delayed_work vs
 kthread_cancel_delayed_work_sync race

On Thu, 13 May 2021 14:54:57 +0800 Martin Liu <liumartin@...gle.com> wrote:

> We encountered a system hang issue while doing the tests. The callstack
> is as following
>
> ...
>
> Fixes: 37be45d49dec2 ("kthread: allow to cancel kthread work")

Thanks.  I added a cc:stable to this and shall hold it in -mm for a
couple of weeks to get exposure and testing before sending it to Linus
for 5.13.