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Message-ID: <1506023948.5486.23.camel@redhat.com>
Subject: Re: [kernel-hardening] [PATCH v3 1/3] x86/fpu: don't let userspace
 set bogus xcomp_bv
From: Rik van Riel <riel@redhat.com>
To: Eric Biggers <ebiggers3@gmail.com>, x86@kernel.org
Cc: linux-kernel@vger.kernel.org, kernel-hardening@lists.openwall.com,
        Andy Lutomirski <luto@kernel.org>,
        Dave Hansen <dave.hansen@linux.intel.com>,
        Dmitry Vyukov <dvyukov@google.com>, Fenghua Yu <fenghua.yu@intel.com>,
        Ingo Molnar <mingo@kernel.org>, Kevin Hao <haokexin@gmail.com>,
        Oleg Nesterov <oleg@redhat.com>, Wanpeng Li <wanpeng.li@hotmail.com>,
        Yu-cheng Yu <yu-cheng.yu@intel.com>,
        Michael Halcrow <mhalcrow@google.com>,
        Eric Biggers <ebiggers@google.com>, stable@vger.kernel.org
Date: Thu, 21 Sep 2017 15:59:08 -0400
In-Reply-To: <20170921185239.88398-2-ebiggers3@gmail.com>
References: <20170921185239.88398-1-ebiggers3@gmail.com>
         <20170921185239.88398-2-ebiggers3@gmail.com>
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On Thu, 2017-09-21 at 11:52 -0700, Eric Biggers wrote:
> From: Eric Biggers <ebiggers@google.com>
>=20
> Fix the bug by checking that the user-supplied value of xcomp_bv is 0
> in
> the uncompacted case, and returning an error otherwise.
>=20
Reviewed-by: Rik van Riel <riel@redhat.com>

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All rights reversed
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