linux-kernel - Re: mm: slub: invalid memory access in setup

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Message-ID: <alpine.DEB.2.11.1406251228130.29216@gentwo.org>
Date:	Wed, 25 Jun 2014 12:30:02 -0500 (CDT)
From:	Christoph Lameter <cl@...two.org>
To:	Sasha Levin <sasha.levin@...cle.com>
cc:	Pekka Enberg <penberg@...nel.org>, Matt Mackall <mpm@...enic.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Dave Jones <davej@...hat.com>
Subject: Re: mm: slub: invalid memory access in setup_object

On Wed, 25 Jun 2014, Sasha Levin wrote:

> [  791.669480] ? init_object (mm/slub.c:665)
> [  791.669480] setup_object.isra.34 (mm/slub.c:1008 mm/slub.c:1373)
> [  791.669480] new_slab (mm/slub.c:278 mm/slub.c:1412)

So we just got a new page from the page allocator but somehow cannot
write to it. This is the first write access to the page.

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