linux-kernel - Re: [PATCH v1 2/8] mm, kasan: SLAB support

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Message-ID: <CAG_fn=VTnFDOVuQzk3NgFGd6D+BoNDSqL4-MYyo0soq+eM76-g@mail.gmail.com>
Date:	Thu, 28 Jan 2016 14:29:42 +0100
From:	Alexander Potapenko <glider@...gle.com>
To:	Joonsoo Kim <iamjoonsoo.kim@....com>
Cc:	kasan-dev@...glegroups.com, Christoph Lameter <cl@...ux.com>,
	linux-kernel@...r.kernel.org, Dmitriy Vyukov <dvyukov@...gle.com>,
	Andrey Ryabinin <ryabinin.a.a@...il.com>, linux-mm@...ck.org,
	Andrey Konovalov <adech.fo@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>, rostedt@...dmis.org
Subject: Re: [PATCH v1 2/8] mm, kasan: SLAB support

On Thu, Jan 28, 2016 at 1:37 PM, Alexander Potapenko <glider@...gle.com> wrote:
>
> On Jan 28, 2016 8:44 AM, "Joonsoo Kim" <iamjoonsoo.kim@....com> wrote:
>>
>> On Wed, Jan 27, 2016 at 07:25:07PM +0100, Alexander Potapenko wrote:
>> > This patch adds KASAN hooks to SLAB allocator.
>> >
>> > This patch is based on the "mm: kasan: unified support for SLUB and
>> > SLAB allocators" patch originally prepared by Dmitry Chernenkov.
>> >
>> > Signed-off-by: Alexander Potapenko <glider@...gle.com>
>> > ---
>> >  Documentation/kasan.txt  |  5 ++-
>>
>> ...
>>
>> > +#ifdef CONFIG_SLAB
>> > +struct kasan_alloc_meta *get_alloc_info(struct kmem_cache *cache,
>> > +                                     const void *object)
>> > +{
>> > +     return (void *)object + cache->kasan_info.alloc_meta_offset;
>> > +}
>> > +
>> > +struct kasan_free_meta *get_free_info(struct kmem_cache *cache,
>> > +                                   const void *object)
>> > +{
>> > +     return (void *)object + cache->kasan_info.free_meta_offset;
>> > +}
>> > +#endif
>>
>> I cannot find the place to store stack info for free. get_free_info()
>> isn't used except print_object(). Plese let me know where.
>
> This is covered by other patches in this patchset.
>
>> Thanks.
(resending to linux-kernel@ because the previous mail bounced)


-- 
Alexander Potapenko
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