From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id DFE2AC46462 for ; Wed, 1 Aug 2018 06:09:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9A5FA20894 for ; Wed, 1 Aug 2018 06:09:56 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="GUbpiEnE" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9A5FA20894 Authentication-Results: mail.kernel.org; dmarc=fail (p=reject dis=none) header.from=chromium.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387412AbeHAHxv (ORCPT ); Wed, 1 Aug 2018 03:53:51 -0400 Received: from mail-pg1-f196.google.com ([209.85.215.196]:37699 "EHLO mail-pg1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1733090AbeHAHxu (ORCPT ); Wed, 1 Aug 2018 03:53:50 -0400 Received: by mail-pg1-f196.google.com with SMTP id n7-v6so10281325pgq.4 for ; Tue, 31 Jul 2018 23:09:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id; bh=CpRCrukzwPkVZPwY6hxKTkGSn5bNvEkKc6CQz569+i0=; b=GUbpiEnEXwcRSgjf34pwFPQdPW9/HtsRrnf+1alaGiyXrksEdSUeeMr2DBw3jtwNTQ Dp/L5bvrBOy9aclfsl0U/SuyHS4acJjwV+yqhSNIKh83t6TQAHBw2FCBdOwPU8WRguIU reJ1vpGvEsh2+4qAkflAxb9mC7FG3rRG/S52M= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id; bh=CpRCrukzwPkVZPwY6hxKTkGSn5bNvEkKc6CQz569+i0=; b=Dfnc7ZwAUCN8On13OSAU92oH1sn47Nhrkef8lT7kuD4J+Linh8PrLseMZ9Qwry8DXo MAkcItjSJKfLCYt8HN2qAb/XQKLxdjeGwvmrJ3ADJTVlEiIwFExjcdq6Bci+pfBAgLax q8UJOCsmPKncuxJONnMiU2uTdfyR9fM/uwIDWRTnC5htMKc+6MUJ8r/ddElPVzziCR/Y hErJqFkezODvhLv3v8hysnELQdgfklwsd+IJUcIyk30FcfYFFucvRh8n22YVLUYg96i4 GcbVTdz52coE3a74Y0mVL7+c37QcUA7Kh0DsNzuhHa2kThQJx0Q79bJ0+W2o82GnoFbC P1lQ== X-Gm-Message-State: AOUpUlGUZWKTf/Dy1bxtyJ5WfFvLrLiRR4H737OkS1mn1tL0qragndxK +rwZ1MU5S3xDiXonijRZ0JWoug== X-Google-Smtp-Source: AAOMgpfTo3FFXuv/DBnTLdbtqC5VlP8fTFjZh6cylcV3zOh3v4X9fgtUEGxKyrtwJj8rQKhlxRYFXQ== X-Received: by 2002:a62:b604:: with SMTP id j4-v6mr16411687pff.199.1533103793666; Tue, 31 Jul 2018 23:09:53 -0700 (PDT) Received: from www.outflux.net (173-164-112-133-Oregon.hfc.comcastbusiness.net. [173.164.112.133]) by smtp.gmail.com with ESMTPSA id v20-v6sm44499362pfk.12.2018.07.31.23.09.49 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Tue, 31 Jul 2018 23:09:49 -0700 (PDT) From: Kees Cook To: Rasmus Villemoes Cc: Kees Cook , Jason Gunthorpe , Leon Romanovsky , Bart Van Assche , Doug Ledford , Dan Carpenter , linux-rdma@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v3 0/3] overflow.h: Add arithmetic shift helper Date: Tue, 31 Jul 2018 23:09:44 -0700 Message-Id: <20180801060947.16670-1-keescook@chromium.org> X-Mailer: git-send-email 2.17.1 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This adds the shift overflow helper, selftests, and first usage. -Kees v3: - add even more test cases (type mismatches, more signed overflows). - fix documentation typo on argument name. v2: - swap out selftests with framework from Rasmus, add lots more tests. - drop double-assignment in helper. Jason Gunthorpe (1): overflow.h: Add arithmetic shift helper Kees Cook (1): test_overflow: Add shift overflow tests Leon Romanovsky (1): RDMA/mlx5: Fix shift overflow in mlx5_ib_create_wq drivers/infiniband/hw/mlx5/qp.c | 5 +- include/linux/overflow.h | 31 +++++ lib/test_overflow.c | 198 +++++++++++++++++++++++++++++++- 3 files changed, 232 insertions(+), 2 deletions(-) -- 2.17.1