linux-kernel - Re: Possible regression in "slab, slub: skip unnecessary kasan_cache

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Date:   Mon, 18 Jun 2018 20:59:01 -0700
From:   Shakeel Butt <shakeelb@...gle.com>
To:     Jason@...c4.com
Cc:     Andrey Ryabinin <aryabinin@...tuozzo.com>,
        Alexander Potapenko <glider@...gle.com>,
        Dmitry Vyukov <dvyukov@...gle.com>,
        Christoph Lameter <cl@...ux.com>,
        Pekka Enberg <penberg@...nel.org>,
        David Rientjes <rientjes@...gle.com>,
        Joonsoo Kim <iamjoonsoo.kim@....com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        kasan-dev@...glegroups.com, Linux MM <linux-mm@...ck.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: Possible regression in "slab, slub: skip unnecessary kasan_cache_shutdown()"

On Mon, Jun 18, 2018 at 7:51 PM Jason A. Donenfeld <Jason@...c4.com> wrote:
>
> Hello Shakeel,
>
> It may be the case that f9e13c0a5a33d1eaec374d6d4dab53a4f72756a0 has
> introduced a regression. I've bisected a failing test to this commit,
> and after staring at the my code for a long time, I'm unable to find a
> bug that this commit might have unearthed. Rather, it looks like this
> commit introduces a performance optimization, rather than a
> correctness fix, so it seems that whatever test case is failing is
> likely an incorrect failure. Does that seem like an accurate
> possibility to you?
>
> Below is a stack trace when things go south. Let me know if you'd like
> to run my test suite, and I can send additional information.
>
> Regards,
> Jason
>

Hi Jason, yes please do send me the test suite with the kernel config.

Shakeel