linux-kernel - Re: [PATCH] Security: List corruption occured during file system automation test

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Message-ID: <CACLa4pvQSA4yJTMRjh2=f8ws6pHRGp1LAFWVLDPpxsiouqGPww@mail.gmail.com>
Date:	Wed, 13 Aug 2014 16:27:39 -0400
From:	Eric Paris <eparis@...isplace.org>
To:	Al Viro <viro@...iv.linux.org.uk>
Cc:	shivnandan.k@...sung.com, Stephen Smalley <sds@...ho.nsa.gov>,
	James Morris <james.l.morris@...cle.com>,
	SE-Linux <selinux@...ho.nsa.gov>, cpgs@...sung.com,
	ashish.kalra@...sung.com, mohammad.a2@...sung.com,
	rajat.suri@...sung.com, shiv.jnumca08@...il.com,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	vidushi.koul@...sung.com, narendra.m1@...sung.com
Subject: Re: [PATCH] Security: List corruption occured during file system
 automation test

Do you have a backtrace?

On Wed, Aug 13, 2014 at 8:30 AM, Al Viro <viro@...iv.linux.org.uk> wrote:
> On Wed, Aug 13, 2014 at 05:04:13PM +0530, shivnandan.k@...sung.com wrote:
>> From: Shivnandan Kumar <shivnandan.k@...sung.com>
>>
>> List element was freed by  inode_free_security and then it uses rcu
>> element to point inode_free_rcu, since it inside a union so it
>> shares memory, sb_finish_set_opts now also try to free list element,
>
> How in hell does it find that element?
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