linux-kernel - Re: [PATCH] mm/slab: Perform init_on

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Message-ID: <9c37ff7f-813d-3313-ea8a-fd65484e476a@google.com>
Date:   Thu, 10 Dec 2020 15:48:41 -0800 (PST)
From:   David Rientjes <rientjes@...gle.com>
To:     Alexander Popov <alex.popov@...ux.com>
cc:     Christoph Lameter <cl@...ux.com>,
        Pekka Enberg <penberg@...nel.org>,
        Joonsoo Kim <iamjoonsoo.kim@....com>,
        Andrew Morton <akpm@...ux-foundation.org>, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org,
        Alexander Potapenko <glider@...gle.com>,
        Dmitry Vyukov <dvyukov@...gle.com>, kasan-dev@...glegroups.com,
        notify@...nel.org
Subject: Re: [PATCH] mm/slab: Perform init_on_free earlier

On Thu, 10 Dec 2020, Alexander Popov wrote:

> Currently in CONFIG_SLAB init_on_free happens too late, and heap
> objects go to the heap quarantine not being erased.
> 
> Lets move init_on_free clearing before calling kasan_slab_free().
> In that case heap quarantine will store erased objects, similarly
> to CONFIG_SLUB=y behavior.
> 
> Signed-off-by: Alexander Popov <alex.popov@...ux.com>
> Reviewed-by: Alexander Potapenko <glider@...gle.com>

Acked-by: David Rientjes <rientjes@...gle.com>