From: Andrey Ryabinin <ryabinin.a.a@gmail.com>
To: js1304@gmail.com
Cc: Andrew Morton <akpm@linux-foundation.org>,
Christoph Lameter <cl@linux.com>,
Pekka Enberg <penberg@kernel.org>,
David Rientjes <rientjes@google.com>,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
LKML <linux-kernel@vger.kernel.org>,
Joonsoo Kim <iamjoonsoo.kim@lge.com>
Subject: Re: [PATCH v2] mm/slub: support left redzone
Date: Fri, 26 Feb 2016 19:47:48 +0300 [thread overview]
Message-ID: <CAPAsAGytHfMaX8VzgWX-PBXcH8aO0G82L3ZX5dSNa=trBFVsyg@mail.gmail.com> (raw)
In-Reply-To: <1456461361-4345-1-git-send-email-iamjoonsoo.kim@lge.com>
2016-02-26 7:36 GMT+03:00 <js1304@gmail.com>:
> From: Joonsoo Kim <iamjoonsoo.kim@lge.com>
>
> SLUB already has a redzone debugging feature. But it is only positioned
> at the end of object (aka right redzone) so it cannot catch left oob.
> Although current object's right redzone acts as left redzone of next
> object, first object in a slab cannot take advantage of this effect. This
> patch explicitly adds a left red zone to each object to detect left oob
> more precisely.
>
So why for each object? Can't we have left redzone only for the first object?
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next prev parent reply other threads:[~2016-02-26 16:47 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-26 4:36 js1304
2016-02-26 16:47 ` Andrey Ryabinin [this message]
2016-02-26 17:08 ` Joonsoo Kim
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