linux-kernel - [PATCH v2 0/2] mm: Expand CONFIG_SLAB_FREELIST

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Message-Id: <20200625215548.389774-1-keescook@chromium.org>
Date:   Thu, 25 Jun 2020 14:55:46 -0700
From:   Kees Cook <keescook@...omium.org>
To:     akpm@...ux-foundation.org
Cc:     Kees Cook <keescook@...omium.org>,
        Vlastimil Babka <vbabka@...e.cz>, Roman Gushchin <guro@...com>,
        Christoph Lameter <cl@...ux.com>,
        Alexander Popov <alex.popov@...ux.com>,
        Pekka Enberg <penberg@...nel.org>,
        David Rientjes <rientjes@...gle.com>,
        Joonsoo Kim <iamjoonsoo.kim@....com>, vinmenon@...eaurora.org,
        Matthew Garrett <mjg59@...gle.com>,
        Jann Horn <jannh@...gle.com>,
        Vijayanand Jitta <vjitta@...eaurora.org>, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH v2 0/2] mm: Expand CONFIG_SLAB_FREELIST_HARDENED to include SLAB

Hi,

In reviewing Vlastimil Babka's latest slub debug series, I realized[1]
that several checks under CONFIG_SLAB_FREELIST_HARDENED weren't being
applied to SLAB. Fix this by expanding the Kconfig coverage, and
adding a simple double-free test for SLAB.

v2:
- rebase to -mmots
- drop SLOB support (willy)
v1: https://lore.kernel.org/lkml/20200617195349.3471794-1-keescook@chromium.org/

Thanks!

-Kees

[1] https://lore.kernel.org/lkml/202006171039.FBDF2D7F4A@keescook/

Kees Cook (2):
  mm: Expand CONFIG_SLAB_FREELIST_HARDENED to include SLAB
  slab: Add naive detection of double free

 init/Kconfig |  9 +++++----
 mm/slab.c    | 14 ++++++++++++--
 2 files changed, 17 insertions(+), 6 deletions(-)

-- 
2.25.1