linux-kernel - Re: [RFC PATCH 07/13] sched: Add core wide task selection and scheduling.

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Message-ID: <CANaguZC+yKkPNcb65hOWjbhmpdP3zp8SdXf0xuvDeV9kEeqnsw@mail.gmail.com>
Date:   Thu, 16 Apr 2020 15:59:11 -0400
From:   Vineeth Remanan Pillai <vpillai@...italocean.com>
To:     Chen Yu <yu.chen.surf@...il.com>
Cc:     Nishanth Aravamudan <naravamudan@...italocean.com>,
        Julien Desfossez <jdesfossez@...italocean.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Tim Chen <tim.c.chen@...ux.intel.com>,
        Ingo Molnar <mingo@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Paul Turner <pjt@...gle.com>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Linux List Kernel Mailing <linux-kernel@...r.kernel.org>,
        Frédéric Weisbecker <fweisbec@...il.com>,
        Kees Cook <keescook@...omium.org>,
        Greg Kerr <kerrnel@...gle.com>, Phil Auld <pauld@...hat.com>,
        Aaron Lu <aaron.lwe@...il.com>,
        Aubrey Li <aubrey.intel@...il.com>,
        "Li, Aubrey" <aubrey.li@...ux.intel.com>,
        Valentin Schneider <valentin.schneider@....com>,
        Mel Gorman <mgorman@...hsingularity.net>,
        Pawan Gupta <pawan.kumar.gupta@...ux.intel.com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Joel Fernandes <joelaf@...gle.com>,
        Joel Fernandes <joel@...lfernandes.org>,
        Aaron Lu <aaron.lu@...ux.alibaba.com>,
        Long Cui <long.cui@...el.com>
Subject: Re: [RFC PATCH 07/13] sched: Add core wide task selection and scheduling.

> Hi Vineeth,
> An NULL pointer exception was found when testing V5 on top of stable
> v5.6.2. And we tried the patch Peter suggested, the NULL pointer
> was not found so far. We don't know if this change would help mitigate
> the symptom, but it should do no harm to test with this fix applied.
>

Thanks for the patch Chenyu!

I was also looking into this as part of addressing Peter's comments. I
shall include this patch in v6 along with addressing all the issues
that Peter pointed out in this thread.

Thanks,
Vineeth