linux-kernel - Re: [PATCHv2] procfs: fix /proc/<pid>/maps heap check

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Message-Id: <20110307150756.d50635f1.akpm@linux-foundation.org>
Date:	Mon, 7 Mar 2011 15:07:56 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Aaro Koskinen <aaro.koskinen@...ia.com>
Cc:	linux-mm@...ck.org, linux-kernel@...r.kernel.org,
	kosaki.motohiro@...fujitsu.com, stable@...nel.org
Subject: Re: [PATCHv2] procfs: fix /proc/<pid>/maps heap check

On Fri,  4 Mar 2011 15:23:14 +0200
Aaro Koskinen <aaro.koskinen@...ia.com> wrote:

> The current code fails to print the "[heap]" marking if the heap is
> splitted into multiple mappings.
> 
> Fix the check so that the marking is displayed in all possible cases:
> 	1. vma matches exactly the heap
> 	2. the heap vma is merged e.g. with bss
> 	3. the heap vma is splitted e.g. due to locked pages
> 
> Signed-off-by: Aaro Koskinen <aaro.koskinen@...ia.com>
> Cc: stable@...nel.org

Why do you believe this problem is serious enough to justify
backporting the fix into -stable?

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