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

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Message-ID: <CAHmME9q7aKGNiYauCjyy6Fu+bryPphEoLEMbAObTJgTrTfS2uw@mail.gmail.com>
Date:   Tue, 19 Jun 2018 17:18:36 +0200
From:   "Jason A. Donenfeld" <Jason@...c4.com>
To:     Shakeel Butt <shakeelb@...gle.com>
Cc:     Dmitry Vyukov <dvyukov@...gle.com>, aryabinin@...tuozzo.com,
        Alexander Potapenko <glider@...gle.com>, cl@...ux.com,
        penberg@...nel.org, rientjes@...gle.com, 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 Tue, Jun 19, 2018 at 5:08 PM Shakeel Butt <shakeelb@...gle.com> wrote:
> > > Are you using SLAB or SLUB? We stress kernel pretty heavily, but with
> > > SLAB, and I suspect Shakeel may also be using SLAB. So if you are
> > > using SLUB, there is significant chance that it's a bug in the SLUB
> > > part of the change.
> >
> > Nice intuition; I am indeed using SLUB rather than SLAB...
> >
>
> Can you try once with SLAB? Just to make sure that it is SLUB specific.

Sorry, I meant to mention that earlier. I tried with SLAB; the crash
does not occur. This appears to be SLUB-specific.