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From: Tejun Heo <tj@kernel.org>
To: Oleg Nesterov <oleg@redhat.com>
Cc: Aleksa Sarai <cyphar@cyphar.com>,
	Johannes Weiner <hannes@cmpxchg.org>,
	Li Zefan <lizefan@huawei.com>,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH?] race between cgroup_subsys->fork() and cgroup_migrate()
Date: Wed, 25 Nov 2015 14:54:10 -0500	[thread overview]
Message-ID: <20151125195410.GD14240@htj.duckdns.org> (raw)
In-Reply-To: <20151125195138.GC14240@htj.duckdns.org>

On Wed, Nov 25, 2015 at 02:51:38PM -0500, Tejun Heo wrote:
> Sounds perfect.  As this needs to go through -stable, can you please
> resend the patch with proper description and SOB?  Please also update
> the now incorrect comment in can_attach.

Ooh, the patch triggers RCU warning from task_css().  It's spurious
and I think the right thing to do at least for now is using
task_css_check() and explain what's going on.

Thanks.

-- 
tejun

  reply	other threads:[~2015-11-25 19:54 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-11-25 16:34 Oleg Nesterov
2015-11-25 19:51 ` Tejun Heo
2015-11-25 19:54   ` Tejun Heo [this message]
2015-11-25 20:40     ` Tejun Heo
2015-11-26 16:01       ` Oleg Nesterov
2015-11-26 15:36     ` Oleg Nesterov
2015-11-26 23:35       ` Aleksa Sarai

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