linux-kernel - Re: [PATCH v2 1/4] sched/task: Add the put_task_struct_atomic

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Message-ID: <20230222220034.02c38eb3@nowhere>
Date:   Wed, 22 Feb 2023 22:00:34 +0100
From:   luca abeni <luca.abeni@...tannapisa.it>
To:     Wander Lairson Costa <wander@...hat.com>
Cc:     Daniel Bristot de Oliveira <bristot@...hat.com>,
        Valentin Schneider <vschneid@...hat.com>,
        Oleg Nesterov <oleg@...hat.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>,
        "Eric W. Biederman" <ebiederm@...ssion.com>,
        Stafford Horne <shorne@...il.com>,
        Kefeng Wang <wangkefeng.wang@...wei.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
        Andy Lutomirski <luto@...nel.org>,
        "Liam R. Howlett" <Liam.Howlett@...cle.com>,
        Fenghua Yu <fenghua.yu@...el.com>,
        Andrei Vagin <avagin@...il.com>,
        open list <linux-kernel@...r.kernel.org>,
        Paul McKenney <paulmck@...nel.org>
Subject: Re: [PATCH v2 1/4] sched/task: Add the put_task_struct_atomic_safe
 function

On Wed, 22 Feb 2023 15:42:37 -0300
Wander Lairson Costa <wander@...hat.com> wrote:
[...]
> > I triggered this "BUG: Invalid wait context" with a 5.15.76 kernel,
> > without PREEMPT_RT. I can reproduce it easily on a KVM-based VM; if
> > more information or tests are needed, let me know.
> >   
> 
> Does it happen in linux-6.1 or linux-6.2?

I only tried with 5.15.76... I am going to test 6.2 and I'll let you
know ASAP.


			Luca