From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753467AbbAMVt2 (ORCPT ); Tue, 13 Jan 2015 16:49:28 -0500 Received: from mail-pa0-f53.google.com ([209.85.220.53]:63900 "EHLO mail-pa0-f53.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751669AbbAMVt0 (ORCPT ); Tue, 13 Jan 2015 16:49:26 -0500 From: Andy Lutomirski To: x86@kernel.org, linux-kernel@vger.kernel.org, Dave Hansen Cc: Masami Hiramatsu , Andy Lutomirski Subject: [PATCH 3.19 v4 0/2] x86, mpx: Instruction decoder fixes and hardening Date: Tue, 13 Jan 2015 13:49:18 -0800 Message-Id: X-Mailer: git-send-email 2.1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi all- Ingo and Thomas, I think this is in decent shape for x86/urgent now if you think it's appropriate to apply at this point in the cycle. Changes from v3: - Replaced MAX_INSN_SIZE with 15 in the decoder change. (Masami) I'll send the patch for 3.20 to fix MAX_INSN_SIZE separately. Changes from v2: - Dropped patch 1 (fixed in tip separately) - Fixed comment typoes in patch 2 (noticed by Dave) Changes from v1: - Dropped the TIF_IA32 change -- let's defer that until at least 3.20. - Fixed the MPX decode short-circuit. v1 was buggy. - Patch 3 is new. It fixes a minor regression from the MPX work. Andy Lutomirski (2): x86, mpx: Short-circuit the instruction decoder for unexpected opcodes x86: Enforce maximum instruction size in the instruction decoder arch/x86/lib/insn.c | 7 +++++++ arch/x86/mm/mpx.c | 25 ++++++++++++++++--------- 2 files changed, 23 insertions(+), 9 deletions(-) -- 2.1.0