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

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Message-ID: <YKd0OBB7dPoAYX7J@google.com>
Date:   Fri, 21 May 2021 16:50:00 +0800
From:   Martin Liu <liumartin@...gle.com>
To:     Petr Mladek <pmladek@...e.com>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Nathan Chancellor <nathan@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.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 Fri, May 21, 2021 at 09:12:30AM +0200, Petr Mladek wrote:
> On Thu 2021-05-20 14:48:45, Andrew Morton wrote:
> > 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.
> 
> Sounds good to me. Thanks for taking care of it.
> 
> Best Regards,
> Petr

Hi Petr, Andrew

Thanks for your help! :)