linux-kernel - Re: 答复: [External Mail][PATCH-tip] sched: Fix use-after-free bug in dup_user_cpus

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Date:   Mon, 28 Nov 2022 10:43:09 -0500
From:   Waiman Long <longman@...hat.com>
To:     David Wang 王标 <wangbiao3@...omi.com>,
        Ingo Molnar <mingo@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Juri Lelli <juri.lelli@...hat.com>,
        Vincent Guittot <vincent.guittot@...aro.org>,
        Dietmar Eggemann <dietmar.eggemann@....com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Ben Segall <bsegall@...gle.com>, Mel Gorman <mgorman@...e.de>,
        Daniel Bristot de Oliveira <bristot@...hat.com>
Cc:     Phil Auld <pauld@...hat.com>,
        Wenjie Li <wenjieli@....qualcomm.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "stable@...r.kernel.org" <stable@...r.kernel.org>
Subject: Re: 答复: [External Mail][PATCH-tip] sched: Fix use-after-free bug in dup_user_cpus_ptr()


On 11/28/22 08:34, David Wang 王标 wrote:
> Hi, Waiman
>
> We use 140 devices to test this patch 72 hours.  The issue can not be reproduced.  If no this patch,  the issue can be reproduced.
> Could you help merge this patch to mailine?
>
> https://lore.kernel.org/all/20221125023943.1118603-1-longman@redhat.com/
>
> If this patch is applied to the maintainer's tree,  we can request google to help cherrypick to ACK to fix issue.

Just want to clarify if you are testing the patch using the latest tip 
tree or on top of an existing linux version without the persistent user 
requested affinity patchset.

PeterZ is the scheduler maintainer who is responsible for merging 
scheduler related patch. It is up to him as to when that will happen.

Cheers,
Longman