linux-kernel - Re: [PATCH] slub: choose the right freelist pointer location when creating small caches

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Message-ID: <4D94B372-CE2D-4E6F-9F02-AF3655E62A8B@psu.edu>
Date:   Fri, 11 Jun 2021 04:22:10 +0000
From:   "Lin, Zhenpeng" <zplin@....edu>
To:     Kees Cook <keescook@...omium.org>
CC:     Christoph Lameter <cl@...ux.com>,
        Pekka Enberg <penberg@...nel.org>,
        David Rientjes <rientjes@...gle.com>,
        Joonsoo Kim <iamjoonsoo.kim@....com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Vlastimil Babka <vbabka@...e.cz>,
        "linux-mm@...ck.org" <linux-mm@...ck.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] slub: choose the right freelist pointer location when
 creating small caches

Yes, that should be enabled to trigger. 

-----Original Message-----
From: Kees Cook <keescook@...omium.org>
Date: Thursday, June 10, 2021 at 7:01 PM
To: "Lin, Zhenpeng" <zplin@....edu>
Cc: Christoph Lameter <cl@...ux.com>, Pekka Enberg <penberg@...nel.org>, David Rientjes <rientjes@...gle.com>, Joonsoo Kim <iamjoonsoo.kim@....com>, Andrew Morton <akpm@...ux-foundation.org>, Vlastimil Babka <vbabka@...e.cz>, "linux-mm@...ck.org" <linux-mm@...ck.org>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] slub: choose the right freelist pointer location when creating small caches

    On Thu, Jun 10, 2021 at 08:20:31PM +0000, Lin, Zhenpeng wrote:
    > Sounds good. But I would suggest this to go to -stable as soon as possible. Because this bug is affecting the basic functionality of DCCP. It crashes kernel whenever a new socket in this module is created.

    But only when redzoning is enabled, yes?

    -- 
    Kees Cook