From mboxrd@z Thu Jan  1 00:00:00 1970
Reply-To: kernel-hardening@lists.openwall.com
Date: Wed, 8 Jun 2016 20:47:58 -0400
From: Brad Spengler <spender@grsecurity.net>
Message-ID: <20160609004758.GA8658@grsecurity.net>
References: <1465420302-23754-1-git-send-email-keescook@chromium.org>
 <1465420302-23754-2-git-send-email-keescook@chromium.org>
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In-Reply-To: <1465420302-23754-2-git-send-email-keescook@chromium.org>
Subject: [kernel-hardening] Re: [PATCH v2 1/4] mm: Hardened usercopy
To: Kees Cook <keescook@chromium.org>
Cc: kernel-hardening@lists.openwall.com, PaX Team <pageexec@freemail.hu>, Casey Schaufler <casey.schaufler@intel.com>, Rik van Riel <riel@redhat.com>, Christoph Lameter <cl@linux.com>, Pekka Enberg <penberg@kernel.org>, David Rientjes <rientjes@google.com>, Joonsoo Kim <iamjoonsoo.kim@lge.com>, Andrew Morton <akpm@linux-foundation.org>
List-ID: <kernel-hardening.lists.openwall.com>


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> diff --git a/mm/usercopy.c b/mm/usercopy.c
> new file mode 100644
> index 000000000000..e09c33070759
> --- /dev/null
> +++ b/mm/usercopy.c
> @@ -0,0 +1,177 @@
> +/*
> + * This implements the various checks for CONFIG_HARDENED_USERCOPY*,
> + * which are designed to protect kernel memory from needless exposure
> + * and overwrite under many conditions.
> + */

As this is a new file being introduced which is (modulo some bikeshedding
and addition of a few comments) a direct copy+paste of our code and comments
in fs/exec.c, I would appreciate both a GPL notice (the same as exists for
KASAN, etc) and both the PaX Team and myself being listed as the copyright
owners.

-Brad

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