linux-kernel - Re: [patch v2 4/4] mm, mempool: poison elements backed by page allocator

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Date:	Thu, 26 Mar 2015 19:07:54 +0300
From:	Andrey Ryabinin <a.ryabinin@...sung.com>
To:	Andrew Morton <akpm@...ux-foundation.org>,
	David Rientjes <rientjes@...gle.com>
Cc:	Dave Kleikamp <shaggy@...nel.org>, Christoph Hellwig <hch@....de>,
	Sebastian Ott <sebott@...ux.vnet.ibm.com>,
	Mikulas Patocka <mpatocka@...hat.com>,
	Catalin Marinas <catalin.marinas@....com>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	jfs-discussion@...ts.sourceforge.net
Subject: Re: [patch v2 4/4] mm, mempool: poison elements backed by page
 allocator

On 03/26/2015 12:55 AM, Andrew Morton wrote:
> On Tue, 24 Mar 2015 16:10:01 -0700 (PDT) David Rientjes <rientjes@...gle.com> wrote:
> 
>> Elements backed by the slab allocator are poisoned when added to a
>> mempool's reserved pool.
>>
>> It is also possible to poison elements backed by the page allocator
>> because the mempool layer knows the allocation order.
>>
>> This patch extends mempool element poisoning to include memory backed by
>> the page allocator.
>>
>> This is only effective for configs with CONFIG_DEBUG_SLAB or
>> CONFIG_SLUB_DEBUG_ON.
>>
> 
> Maybe mempools should get KASAN treatment (as well as this)?
> 

Certainly, I could cook a patch tomorrow.
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