From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <stable-owner@vger.kernel.org>
Received: from mail.kernel.org ([198.145.29.99]:40954 "EHLO mail.kernel.org"
        rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP
        id S1753480AbeDIU0t (ORCPT <rfc822;stable@vger.kernel.org>);
        Mon, 9 Apr 2018 16:26:49 -0400
Date: Mon, 9 Apr 2018 21:26:43 +0100
From: James Hogan <jhogan@kernel.org>
To: Sasha Levin <Alexander.Levin@microsoft.com>
Cc: "stable@vger.kernel.org" <stable@vger.kernel.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        David Daney <david.daney@cavium.com>,
        Alexei Starovoitov <ast@kernel.org>,
        Daniel Borkmann <daniel@iogearbox.net>,
        Matt Redfearn <matt.redfearn@imgtec.com>,
        "netdev@vger.kernel.org" <netdev@vger.kernel.org>,
        "linux-mips@linux-mips.org" <linux-mips@linux-mips.org>,
        Ralf Baechle <ralf@linux-mips.org>
Subject: Re: [PATCH AUTOSEL for 4.9 160/293] MIPS: Give __secure_computing()
 access to syscall arguments.
Message-ID: <20180409202642.GD17347@saruman>
References: <20180409002239.163177-1-alexander.levin@microsoft.com>
 <20180409002239.163177-160-alexander.levin@microsoft.com>
MIME-Version: 1.0
Content-Type: multipart/signed; micalg=pgp-sha256;
        protocol="application/pgp-signature"; boundary="FFoLq8A0u+X9iRU8"
Content-Disposition: inline
In-Reply-To: <20180409002239.163177-160-alexander.levin@microsoft.com>
Sender: stable-owner@vger.kernel.org
List-ID: <stable.vger.kernel.org>


--FFoLq8A0u+X9iRU8
Content-Type: text/plain; charset=utf-8
Content-Disposition: inline
Content-Transfer-Encoding: quoted-printable

On Mon, Apr 09, 2018 at 12:24:58AM +0000, Sasha Levin wrote:
> From: David Daney <david.daney@cavium.com>
>=20
> [ Upstream commit 669c4092225f0ed5df12ebee654581b558a5e3ed ]
>=20
> KProbes of __seccomp_filter() are not very useful without access to
> the syscall arguments.
>=20
> Do what x86 does, and populate a struct seccomp_data to be passed to
> __secure_computing().  This allows samples/bpf/tracex5 to extract a
> sensible trace.

This broke o32 indirect syscalls, and was fixed by commit 3d729deaf287
("MIPS: seccomp: Fix indirect syscall args").

Cheers
James

--FFoLq8A0u+X9iRU8
Content-Type: application/pgp-signature; name="signature.asc"
Content-Description: Digital signature

-----BEGIN PGP SIGNATURE-----
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=8wTE
-----END PGP SIGNATURE-----

--FFoLq8A0u+X9iRU8--