linux-kernel - Re: [PATCH 0/20 V3] Misc cleanups for ipc

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Message-ID: <48999048-ee2c-cd3f-6980-668617a3d9e4@colorfullife.com>
Date:   Fri, 26 May 2017 03:56:34 +0200
From:   Manfred Spraul <manfred@...orfullife.com>
To:     Kees Cook <keescook@...omium.org>
Cc:     Michael Kerrisk <mtk.manpages@...il.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        LKML <linux-kernel@...r.kernel.org>, 1vier1@....de,
        Davidlohr Bueso <dave@...olabs.net>,
        Ingo Molnar <mingo@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Fabian Frederick <fabf@...net.be>
Subject: Re: [PATCH 0/20 V3] Misc cleanups for ipc

Hi Kees,

On 05/25/2017 09:45 PM, Kees Cook wrote:
> On Thu, May 25, 2017 at 11:50 AM, Manfred Spraul
> <manfred@...orfullife.com> wrote:
>> Hi all,
>>
>> Updated series. The series got longer, because I merged all patches
>> from Kees.
>>
>> Main changes are:
>> - sems[] instead of sem[0].
>> - Immediately use BUILD_BUG_ON()
>> - Immediately move the memset() to avoid crashing with SEM_UNDO.
>> - Use rcu for every security_xx_free(), even if ipc_addid() was not
>>    successful
> This all looks great (excepting the accidental hunk migration). I like
> the change to use call_rcu(), though I still think it's overkill. ;)
I still don't see the hunk migration.

What I wanted to do was to merge a fix for the wrong memset into
"[PATCH 02/20] ipc: merge ipc_rcu and kern_ipc_perm"

--
     Manfred