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 37793C28CF6 for ; Wed, 1 Aug 2018 21:25:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D71FE20862 for ; Wed, 1 Aug 2018 21:25:52 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="e2jRX/OR" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D71FE20862 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 S1732410AbeHAXNd (ORCPT ); Wed, 1 Aug 2018 19:13:33 -0400 Received: from mail-pl0-f68.google.com ([209.85.160.68]:45925 "EHLO mail-pl0-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732367AbeHAXNc (ORCPT ); Wed, 1 Aug 2018 19:13:32 -0400 Received: by mail-pl0-f68.google.com with SMTP id j8-v6so9028pll.12 for ; Wed, 01 Aug 2018 14:25:49 -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=jxNBccwBJhOjNSehNOYa6peZNnukJ0uEhyMfONEe2KU=; b=e2jRX/ORCzfYWWo8zwRFnr31EHJkGKgauIMX/rYrDSUnsgapk8Ts2IdB1VgczVUlcx ckbyZnKJAMETkb1/ChuKehOk6Hc7rh+rKeMLrQ1PgTcWhMcpC5eIEX8HBQURhMgCJWR9 RuSkhO6a1PUj2DofXXEmN+q+m66yH5oKjVxYk= 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=jxNBccwBJhOjNSehNOYa6peZNnukJ0uEhyMfONEe2KU=; b=keWnziaBkrC3VxOEmoD9TTA0JnvVDiJ9wtPWUsGpUQGp1MclO+8AgoGhVJxi9N6F1O 607iypN65vmMMNflu1i7FEAQQegD02E17mnOp1Rn0wVYXMSIyNe5k8DWzUIRXvG1orSR 8iPKWVBu60O4Z8lo+6QFaPHc7RprJZYHfzMKoq4TN3CRlrGwHmYXuDBVhe3tdFkclT8W zvMadMIF+Pw4g/SSkno/7YhXkBIa8WuyUKAxcgXIHAaaiP1kfvuwy9QKuiFqHCTULbve WkvlOqC+9S/gh6rWPGMZhnf4XiU0Y3cz4QLjbdAzE3MwR7JruQqa0/vRrgOFGFa/UZjH hVtA== X-Gm-Message-State: AOUpUlHaCrKnJH/3VacRLq+ZGH7FDsw6EtTIkkJeHru7K1zuceiydNrY yt5MF5NOdQ1fWh5pO0OKXydd7g== X-Google-Smtp-Source: AAOMgpfWVHbmyfnDG9pH0pOtb1VPUbXvWW8MnMZz8paghwL1DU1edkrPLlaT5alehIcYSEkxQVI3xg== X-Received: by 2002:a17:902:b08d:: with SMTP id p13-v6mr64370plr.0.1533158748927; Wed, 01 Aug 2018 14:25:48 -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 f67-v6sm40264pfe.75.2018.08.01.14.25.45 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Wed, 01 Aug 2018 14:25:46 -0700 (PDT) From: Kees Cook To: Jason Gunthorpe Cc: Kees Cook , Rasmus Villemoes , Leon Romanovsky , Bart Van Assche , Doug Ledford , Dan Carpenter , Randy Dunlap , linux-rdma@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH rdma-next v4 0/3] overflow.h: Add left-shift helper Date: Wed, 1 Aug 2018 14:25:38 -0700 Message-Id: <20180801212541.22889-1-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 left-shift overflow helper, selftests, and first usage. -Kees v4: - actually fix docs typo - rename to check_shl_overflow() 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 | 4 +- include/linux/overflow.h | 31 +++++ lib/test_overflow.c | 198 +++++++++++++++++++++++++++++++- 3 files changed, 231 insertions(+), 2 deletions(-) -- 2.17.1