From: Kees Cook <keescook@chromium.org>
To: Alexander Potapenko <glider@google.com>
Cc: akpm@linux-foundation.org, cl@linux.com,
kernel-hardening@lists.openwall.com,
Masahiro Yamada <yamada.masahiro@socionext.com>,
James Morris <jmorris@namei.org>,
"Serge E. Hallyn" <serge@hallyn.com>,
Nick Desaulniers <ndesaulniers@google.com>,
Kostya Serebryany <kcc@google.com>,
Dmitry Vyukov <dvyukov@google.com>,
Sandeep Patil <sspatil@android.com>,
Laura Abbott <labbott@redhat.com>,
Randy Dunlap <rdunlap@infradead.org>,
Jann Horn <jannh@google.com>, Mark Rutland <mark.rutland@arm.com>,
linux-mm@kvack.org, linux-security-module@vger.kernel.org
Subject: Re: [PATCH v2 1/4] mm: security: introduce init_on_alloc=1 and init_on_free=1 boot options
Date: Thu, 16 May 2019 18:26:22 -0700 [thread overview]
Message-ID: <201905161824.63B0DF0E@keescook> (raw)
In-Reply-To: <20190514143537.10435-2-glider@google.com>
On Tue, May 14, 2019 at 04:35:34PM +0200, Alexander Potapenko wrote:
> [...]
> diff --git a/mm/slab.h b/mm/slab.h
> index 43ac818b8592..24ae887359b8 100644
> --- a/mm/slab.h
> +++ b/mm/slab.h
> @@ -524,4 +524,20 @@ static inline int cache_random_seq_create(struct kmem_cache *cachep,
> [...]
> +static inline bool slab_want_init_on_free(struct kmem_cache *c)
> +{
> + if (static_branch_unlikely(&init_on_free))
> + return !(c->ctor);
BTW, why is this checking for c->ctor here? Shouldn't it not matter for
the free case?
> + else
> + return false;
> +}
--
Kees Cook
next prev parent reply other threads:[~2019-05-17 1:26 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20190514143537.10435-1-glider@google.com>
2019-05-14 14:35 ` [PATCH v2 1/4] mm: security: introduce init_on_alloc=1 and init_on_free=1 boot options Alexander Potapenko
2019-05-16 16:19 ` Kees Cook
2019-05-16 16:42 ` Alexander Potapenko
2019-05-16 17:03 ` Kees Cook
2019-05-17 1:26 ` Kees Cook [this message]
2019-05-17 14:38 ` Alexander Potapenko
2019-05-17 14:04 ` Michal Hocko
2019-05-17 14:11 ` Alexander Potapenko
2019-05-17 14:20 ` Michal Hocko
2019-05-17 16:36 ` Kees Cook
2019-05-17 17:11 ` Michal Hocko
2019-05-14 14:35 ` [PATCH v2 2/4] lib: introduce test_meminit module Alexander Potapenko
2019-05-16 1:02 ` Kees Cook
2019-05-17 15:51 ` Alexander Potapenko
2019-05-17 16:37 ` Kees Cook
2019-05-14 14:35 ` [PATCH v2 3/4] gfp: mm: introduce __GFP_NO_AUTOINIT Alexander Potapenko
2019-05-17 12:59 ` Michal Hocko
2019-05-17 13:18 ` Alexander Potapenko
2019-05-17 13:25 ` Michal Hocko
2019-05-17 13:37 ` Alexander Potapenko
2019-05-17 14:01 ` Michal Hocko
2019-05-17 16:27 ` Kees Cook
2019-05-17 17:11 ` Michal Hocko
2019-05-21 14:18 ` Alexander Potapenko
2019-05-21 14:25 ` Michal Hocko
2019-05-14 14:35 ` [PATCH v2 4/4] net: apply __GFP_NO_AUTOINIT to AF_UNIX sk_buff allocations Alexander Potapenko
2019-05-16 16:53 ` Kees Cook
2019-05-17 0:26 ` Kees Cook
2019-05-17 8:49 ` Alexander Potapenko
2019-05-17 13:50 ` Alexander Potapenko
2019-05-17 16:13 ` Kees Cook
2019-05-17 0:50 ` [PATCH 5/4] mm: Introduce SLAB_NO_FREE_INIT and mark excluded caches Kees Cook
2019-05-17 8:34 ` Alexander Potapenko
2019-05-17 15:59 ` Kees Cook
2019-05-20 6:10 ` Mathias Krause
2019-05-20 16:12 ` Kees Cook
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