linux-kernel - Re: [PATCH 03/12] pid: get ppid pid_t of task in init_pid

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Message-ID: <52A8966A.9080306@canonical.com>
Date:	Wed, 11 Dec 2013 08:44:26 -0800
From:	John Johansen <john.johansen@...onical.com>
To:	Richard Guy Briggs <rgb@...hat.com>
CC:	Peter Zijlstra <peterz@...radead.org>,
	Oleg Nesterov <oleg@...hat.com>, linux-kernel@...r.kernel.org,
	linux-audit@...hat.com, Ingo Molnar <mingo@...hat.com>,
	"Serge E. Hallyn" <serge@...lyn.com>
Subject: Re: [PATCH 03/12] pid: get ppid pid_t of task in init_pid_ns safely

On 12/11/2013 06:47 AM, Richard Guy Briggs wrote:
> On Tue, Sep 03, 2013 at 02:31:59PM -0400, Richard Guy Briggs wrote:
>> On Fri, Aug 30, 2013 at 01:37:09PM -0700, John Johansen wrote:
>>> On 08/30/2013 12:56 PM, Richard Guy Briggs wrote:
>>>> On Tue, Aug 27, 2013 at 07:21:55PM +0200, Oleg Nesterov wrote:
>>>>> On 08/20, Richard Guy Briggs wrote:
>>>> Most of the instances are current, but the one called from apparmour is
>>>> stored.  I've just learned that this is bad and someone else just chimed
>>>> in that they have a patch to remove it...
>>>
>>> the apparmor case isn't actually stored long term. The stored task will be
>>> a parameter that was passed into an lsm hook and the buffer that it is
>>> stored in dies before the hook is done. Its temporarily stored in the
>>> struct so that it can be passed into the lsm_audit fn, and printed into an
>>> allocated audit buffer. The text version in the audit buffer is what will
>>> exist beyond the hook.
>>>
>>> There are three patches, I'll reply them below once I have finished rebasing
>>> them to apply to the current tree instead of my dev tree.
>>
>> John, thanks for this context and fix.  That helps simplify things.
> 
> John, What's the status of this set of 3 patches?  I don't see them
> upstream.
> 
they are part of the security tree merge in 3.13

51775fe apparmor: remove the "task" arg from may_change_ptraced_domain()
4a7fc30 apparmor: remove parent task info from audit logging
61e3fb8 apparmor: remove tsk field from the apparmor_audit_struct
dd0c6e8 apparmor: fix capability to not use the current task, during reporting


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