linux-kernel - Re: [PATCH] mm/sl[aou]b: make kfree() aware of error pointers

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Message-ID: <alpine.DEB.2.11.1409101042230.1654@gentwo.org>
Date:	Wed, 10 Sep 2014 10:43:40 -0500 (CDT)
From:	Christoph Lameter <cl@...ux.com>
To:	Jiri Kosina <jkosina@...e.cz>
cc:	Theodore Ts'o <tytso@....edu>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Pekka Enberg <penberg@...nel.org>,
	David Rientjes <rientjes@...gle.com>,
	Joonsoo Kim <iamjoonsoo.kim@....com>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	Dan Carpenter <dan.carpenter@...cle.com>
Subject: Re: [PATCH] mm/sl[aou]b: make kfree() aware of error pointers

On Wed, 10 Sep 2014, Jiri Kosina wrote:

> Still, I believe that kernel shouldn't be just ignoring kfree(ERR_PTR)
> happening. Would something like the below be more acceptable?

CONFIG_DEBUG_SLAB is the wrong debugging option since it is used for
object debugging. This kind of patch would need CONFIG_DEBUG_VM I think.

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