linux-kernel - Re: [PATCH mm] slub, kasan: improve interaction of KASAN and slub

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Message-ID: <CA+fCnZcpLE_uR4D9eyUA9_TzF0w2GgY=yWYB63b2VL1snAQi1Q@mail.gmail.com>
Date:   Thu, 23 Nov 2023 04:13:07 +0100
From:   Andrey Konovalov <andreyknvl@...il.com>
To:     Hyeonggon Yoo <42.hyeyoo@...il.com>
Cc:     andrey.konovalov@...ux.dev,
        Andrew Morton <akpm@...ux-foundation.org>,
        Marco Elver <elver@...gle.com>,
        Alexander Potapenko <glider@...gle.com>,
        Dmitry Vyukov <dvyukov@...gle.com>,
        Vlastimil Babka <vbabka@...e.cz>, kasan-dev@...glegroups.com,
        Evgenii Stepanov <eugenis@...gle.com>,
        Oscar Salvador <osalvador@...e.de>,
        Feng Tang <feng.tang@...el.com>, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org,
        Andrey Konovalov <andreyknvl@...gle.com>
Subject: Re: [PATCH mm] slub, kasan: improve interaction of KASAN and
 slub_debug poisoning

On Thu, Nov 23, 2023 at 3:58 AM Hyeonggon Yoo <42.hyeyoo@...il.com> wrote:
>
> 1. I reverted the commit "kasan: improve free meta storage in Generic KASAN",
>     on top of linux-next (next-20231122), and it is still stuck at boot.

This is expected: the patch you bisected to still requires this fix
that I posted.

> 2. I reverted the commit "kasan: improve free meta storage in Generic KASAN",
>     on top of linux-next (next-20231122),
>    _and_ applied this patch on top of it, now it boots fine!

Great! Thank you for testing!