Openwall GNU/*/Linux - a small security-enhanced Linux distro for servers
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Date: Tue, 23 Apr 2019 13:40:19 -0700
From: Dave Hansen <dave.hansen@...el.com>
To: Kees Cook <keescook@...omium.org>
Cc: Alexander Potapenko <glider@...gle.com>,
 Andrew Morton <akpm@...ux-foundation.org>, Christoph Lameter <cl@...ux.com>,
 Dmitry Vyukov <dvyukov@...gle.com>, Laura Abbott <labbott@...hat.com>,
 Linux-MM <linux-mm@...ck.org>,
 linux-security-module <linux-security-module@...r.kernel.org>,
 Kernel Hardening <kernel-hardening@...ts.openwall.com>
Subject: Re: [PATCH 2/3] gfp: mm: introduce __GFP_NOINIT

On 4/23/19 12:14 PM, Kees Cook wrote:
>> These sl*b ones seem like a bad idea.  We already have rules that sl*b
>> allocations must be initialized by callers, and we have reasonably
>> frequent bugs where the rules are broken.
> 
> Hm? No, this is saying that the page allocator can skip the auto-init
> because the slab internals will be doing it later.

Ahhh, got it.  I missed all the fun in patch 1.

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