linux-kernel - Re: [PATCH v2 3/3] selinux: require EXECMEM for forced ptrace poke

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Message-ID: <20160929061927.GA21794@gmail.com>
Date:   Thu, 29 Sep 2016 08:19:27 +0200
From:   Ingo Molnar <mingo@...nel.org>
To:     Jann Horn <jann@...jh.net>
Cc:     security@...nel.org, Alexander Viro <viro@...iv.linux.org.uk>,
        Paul Moore <paul@...l-moore.com>,
        Stephen Smalley <sds@...ho.nsa.gov>,
        Eric Paris <eparis@...isplace.org>,
        James Morris <james.l.morris@...cle.com>,
        "Serge E. Hallyn" <serge@...lyn.com>,
        Nick Kralevich <nnk@...gle.com>,
        Janis Danisevskis <jdanis@...gle.com>,
        linux-security-module@...r.kernel.org, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 3/3] selinux: require EXECMEM for forced ptrace poke


* Jann Horn <jann@...jh.net> wrote:

> +{
> +	/* Permitting a write to readonly memory is fine - making the readonly
> +	 * memory executable afterwards would require EXECMOD permission because
> +	 * anon_vma would be non-NULL.
> +	 */

Minor stylistic nit: please fix this comment to be visually symmetric. (There's 
another one introduced by one of your other patches.)

Thanks,

	Ingo