linux-kernel - Re: [PATCH] slub: slub_def.h: needs additional check for "index"

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Date:	Sat, 7 May 2011 03:03:53 +0300
From:	Maxin John <maxin.john@...il.com>
To:	Christoph Lameter <cl@...ux.com>
Cc:	Pekka Enberg <penberg@...nel.org>, Matt Mackall <mpm@...enic.com>,
	linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] slub: slub_def.h: needs additional check for "index"

Hi,

On Fri, May 6, 2011 at 9:56 PM, Christoph Lameter <cl@...ux.com> wrote:
> The value passed to kmalloc_slab is tested before the result is used.
> kmalloc_slab() only returns -1 for values > 4MB.
>
> The size of the object is checked against SLUB_MAX size which is
> significantly smaller than 4MB. 8kb by default.
>
> So kmalloc_slab() cannot return -1 if the parameter is checked first.

Thank you very much for pointing it out. I think it's a lot more clear
for me now.

Best Regards,
Maxin
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