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From: Tejun Heo <tj@kernel.org>
To: Zhang Qiao <zhangqiao22@huawei.com>
Cc: mingo@redhat.com, peterz@infradead.org,
	linux-kernel@vger.kernel.org, juri.lelli@redhat.com,
	vincent.guittot@linaro.org, dietmar.eggemann@arm.com,
	rostedt@goodmis.org, bsegall@google.com, mgorman@suse.de,
	bristot@redhat.com
Subject: Re: [PATCH v2] kernel/sched: Fix sched_fork() access an invalid sched_task_group
Date: Tue, 14 Sep 2021 06:23:32 -1000	[thread overview]
Message-ID: <YUDMhMgM4ZECVBo8@slm.duckdns.org> (raw)
In-Reply-To: <b30205b0-bf54-7255-fc1c-9dfa5dbb4940@huawei.com>

On Tue, Sep 14, 2021 at 04:20:02PM +0800, Zhang Qiao wrote:
> Perhaps we can fix this bug at sched_post_fork(), which is executed between cgroup_can_fork()
> and cgroup_post_fork(). Relocate the fectching of task_group and access it at sched_post_fork().

Can't we just add a can_fork callback in cpu_cgrp_subsys?

-- 
tejun

  reply	other threads:[~2021-09-14 16:23 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-11  7:50 [PATCH v2] kernel/sched: Fix sched_fork() access an invalid sched_task_group Zhang Qiao
2021-09-13 18:01 ` Tejun Heo
2021-09-14  8:20   ` Zhang Qiao
2021-09-14 16:23     ` Tejun Heo [this message]
2021-09-15  3:10       ` Zhang Qiao

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