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 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id A3F9EC433F5 for ; Tue, 1 Feb 2022 14:55:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=n3cL4CUZYvIFOdV0IZi2hCPdS7OKCODaYMlEOpxW6jI=; b=rQBcF1kTQHhrRr y0ED6EcTYXfMaD+FO+6X4MEN6a5T9Fx1gT0PvCfFXLm8u8gYygpweC8lmSlIckr1a8vMOU7tVQBkq k/QMkxGSCmQQC8F1igPhV3qaPmoLMxAO/1Yvw8ExTzD7FoZuiHbopkXMcqwQ3UwOcQ/ahaeu9ai9c 18EkOeNp8crwI6RM8eA6mQkmMM/gKHEm/8oXC8B4i5paTBjco9olU0raSgtjx82mFAZ7OfBPpGuQP aKwO2abHAZVedl0uufAC3aGrCWYbML/02UsXgYPnRK00IBX6p0OJPSJu7e7NNFtl3mSiFC3kDyWA8 k2t0q+hmSVrBioaFpMvg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nEuZP-00CUdz-1p; Tue, 01 Feb 2022 14:55:47 +0000 Received: from mail-lf1-x12f.google.com ([2a00:1450:4864:20::12f]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nEuZM-00CUcL-Cr for linux-snps-arc@lists.infradead.org; Tue, 01 Feb 2022 14:55:45 +0000 Received: by mail-lf1-x12f.google.com with SMTP id o12so34367279lfg.12 for ; Tue, 01 Feb 2022 06:55:43 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=1wbHfx89jouWHWfWZOFmOM4b/vdqSA346FdSEhABOKI=; b=FkvTvq1mDZukGDGNdiVRb1BvtsV+jq3oMQDZ+wrQz/EG5k4/9SKiQTwWZ7Qy7kdHts 2kx475sTkcnUIk+hd7PX1NDjdSox34kXZLLN6aNUjGRt+29OrZaXCMMoF9nAoJIaKw80 YOewKqhIHK/EuEOaIL1uNHKT6A+5hrLvcMPLSji4ccn3bvwpP8YOEItSrcRIeapTUr0U o46s0oKfUpUG9liDectxqFXCSpbGbbfx4TweuToeGBO64ipxamBynZx5n/jQkR1DNwdX Wi74IdnnNxNBZ7hK60JE3F4LySsrfuAq3dZc7+t2juaAL516divq6x8uc1mWU2vCVJa3 bdzA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=1wbHfx89jouWHWfWZOFmOM4b/vdqSA346FdSEhABOKI=; b=pWFN6ZNUWdFnYtUf0ZAcgImG4+42Gu2njM2Q2ISnom8jJ9VKEL5lYl/qhGtxTJkUI0 1yRhht5Wcme2mNOUaNQzU7Wg3SzCx8BcJ5cGe2XHsWCvDQcmU84y1GPrIEtOfY0xB8Nr 0zRbELJunivHMKOaRUdz8NM1yeSOArW4c/nWeDAq3EzcRAsp/kNEnaMuvkb5eQ+oml5g 04UW9ULCfOtT75JFVqDUOCGVGjZ5plwxnjwpu8r/MOxOlMoiO8oMYsrB7XCifcauOLjo 4rdzHvCrm86f3f0EhvRocaYIthVc5Ib1BnQoYhaxaOInL60U94gDjeJs6t5WBDlU7Fv/ 584g== X-Gm-Message-State: AOAM5316xHDqdowFQeKA/LyWw7Q+/PqERcSyiTeAWkovrbZ8ja7MQSGx JiaxIfLJiBt3lK/BMQJ1RTfM6/POmfk= X-Google-Smtp-Source: ABdhPJwjuzSAIuki6sJhpv8gGBFhYyYfwR6VM7d/CvHn8rKrN7WSt+VvP8KnoXCagrqyY8RKCDB5bA== X-Received: by 2002:a05:6512:2342:: with SMTP id p2mr19602636lfu.382.1643727342234; Tue, 01 Feb 2022 06:55:42 -0800 (PST) Received: from localhost.localdomain ([5.188.167.245]) by smtp.googlemail.com with ESMTPSA id w11sm2492814lfr.201.2022.02.01.06.55.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 01 Feb 2022 06:55:41 -0800 (PST) From: Sergey Matyukevich To: linux-snps-arc@lists.infradead.org Cc: Vineet Gupta , Vladimir Isaev , Christoph Hellwig , Sergey Matyukevich , Sergey Matyukevich Subject: [RFC PATCH 1/3] arc: use BUILD_BUG for invalid sizes in get_user/put_user Date: Tue, 1 Feb 2022 17:55:36 +0300 Message-Id: <20220201145538.111192-2-geomatsi@gmail.com> X-Mailer: git-send-email 2.35.0 In-Reply-To: <20220201145538.111192-1-geomatsi@gmail.com> References: <20220201145538.111192-1-geomatsi@gmail.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220201_065544_470282_ACE22DF2 X-CRM114-Status: GOOD ( 10.81 ) X-BeenThere: linux-snps-arc@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux on Synopsys ARC Processors List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-snps-arc" Errors-To: linux-snps-arc-bounces+linux-snps-arc=archiver.kernel.org@lists.infradead.org From: Sergey Matyukevich Use BUILD_BUG for compile-time check of invalid sizes passed to get_user/put_user functions. Signed-off-by: Sergey Matyukevich --- arch/arc/include/asm/uaccess.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arc/include/asm/uaccess.h b/arch/arc/include/asm/uaccess.h index 783bfdb3bfa3..9d1205bf90f1 100644 --- a/arch/arc/include/asm/uaccess.h +++ b/arch/arc/include/asm/uaccess.h @@ -62,6 +62,7 @@ case 2: __arc_get_user_one(*(k), u, "ldw", __ret); break; \ case 4: __arc_get_user_one(*(k), u, "ld", __ret); break; \ case 8: __arc_get_user_one_64(*(k), u, __ret); break; \ + default: BUILD_BUG(); \ } \ __ret; \ }) @@ -123,6 +124,7 @@ case 2: __arc_put_user_one(*(k), u, "stw", __ret); break; \ case 4: __arc_put_user_one(*(k), u, "st", __ret); break; \ case 8: __arc_put_user_one_64(*(k), u, __ret); break; \ + default: BUILD_BUG(); \ } \ __ret; \ }) -- 2.35.0 _______________________________________________ linux-snps-arc mailing list linux-snps-arc@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-snps-arc