linux-kernel - Re: rq->tmp_alone_branch != &rq->leaf_cfs_rq_list + RIP: 0010:enqueue_task

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Date:   Tue, 26 Oct 2021 08:40:40 +0200
From:   Igor Raits <igor@...ddata.com>
To:     Davidlohr Bueso <dave@...olabs.net>
Cc:     Ingo Molnar <mingo@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        linux-kernel@...r.kernel.org
Subject: Re: rq->tmp_alone_branch != &rq->leaf_cfs_rq_list + RIP: 0010:enqueue_task_fair+0x268/0x6a0

Hi Davidlohr,

Given that we did not see this crash anymore after upgrading, there is
a big chance that it fixed it.

Thanks for pointing it out btw!

On Mon, Oct 4, 2021 at 9:26 PM Davidlohr Bueso <dave@...olabs.net> wrote:
>
> On Mon, 20 Sep 2021, Igor Raits wrote:
>
> >------------[ cut here ]------------
> >rq->tmp_alone_branch != &rq->leaf_cfs_rq_list
> >WARNING: CPU: 5 PID: 1832 at kernel/sched/fair.c:379
> >enqueue_task_fair+0x268/0x6a0
>
> Does this help?
>
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=2630cde26711dab0d0b56a8be1616475be646d13
>
> Thanks,
> Davidlohr