From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pf1-f170.google.com (mail-pf1-f170.google.com [209.85.210.170]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id CE8E14BA8D for ; Mon, 5 Feb 2024 22:44:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.170 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707173058; cv=none; b=L+1cshc1BAKC+7AbykSjBaD3AJAP6WiLggVe+2gcrfAkfZE9kSp0JOu9CosT2JTsCZ5f55yzK8VXcrP22zWj6CKPzLn+/O5mBavFWoQTMMf1YUUswJW+XHR45tF7qUsD3cOfz01lFfi/dvdCQx2gQop53WllBnu2fds762leReQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707173058; c=relaxed/simple; bh=ZQgq1MCIgYVKvCXkNtnZ9U1EnbNFNTYyqAwvNP/4WjY=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=SClsj+7Uyh4089jcXqofuf9rEDbJ9/uZJxuYcx9G5C8xeDS9SgREPeCf3yQZ2/18XtI+F+lmBr509iOdYlXs1YQCjyTvxvnJfQYh/zdCgKGJHOt8yDIBEB6j6JGv7kS5I5vvp1oy9ntfkKGzwQ//fEo3vZ7r2s4iG8hvl32w6WA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=chromium.org; spf=pass smtp.mailfrom=chromium.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b=FemScorA; arc=none smtp.client-ip=209.85.210.170 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=chromium.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=chromium.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="FemScorA" Received: by mail-pf1-f170.google.com with SMTP id d2e1a72fcca58-6e04c4f494cso728152b3a.2 for ; Mon, 05 Feb 2024 14:44:16 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; t=1707173056; x=1707777856; darn=vger.kernel.org; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:from:to:cc:subject:date:message-id:reply-to; bh=YlsSc3pFtKmxKFilYiWjxo3LPVslJeCkCNbb2hluo8Q=; b=FemScorA3FgpmqmyNWIkNg1H3g0+setZhSxFAN8BB8QkkuHitYIpjJpuo0dVLod3m/ A5ZwdjiGrEEWPcrjWJwVNHjxQqWgHCNI0Wa4+53eJgF6l+uyemKEgwWa+UQuka5sujOQ 1Si01k2CS5xZoF7qMh6F1Bb1OPqVQn4mTivTQ= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1707173056; x=1707777856; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=YlsSc3pFtKmxKFilYiWjxo3LPVslJeCkCNbb2hluo8Q=; b=bRAy2CXrGKN4dfwe3BIu7P5w4vKu8mvAGGQXGY5QiShclQPw5XPPpmyYNkxqKcJzLE XOGJSiZI9Ijylgs3PgQortzvD41d+HHfqmUeX9LhYRVXD3NFRe3/b+IgXAY5RGJjIld8 TT7mHiRqLvKM8YZuR+R+RX2q7neakJ0yctVLZFC506KhSk6RPFE8AED/AIUhjOVifdXN F3maRZKdWbW28m1Yddf6AwrlnVEpx4FkXilj0qdaIiGBRJfRNwWB64ct8g7S9HlXl1Sy VKUDXlJk0yKG54L80X4MxdHAkhoR4+cay5X/+ANmqn5x1eGs1kJBCWfSaWarXBgl2ur6 RQCA== X-Gm-Message-State: AOJu0Yx802oZFWeSSrwkAT/CRTt2MWx+25BlRHPYsKaZ/RkOzKg7Q/Hp vYDJSq5lV4NbvsX7m/Rr3OPsAW9KBF9DvFvCBlmS6J+/RWs9IEnIyAw/TU5/8A== X-Google-Smtp-Source: AGHT+IE1QBh6gexcQ+2X2Gc5NMQeqE3k7X4xb8teEBAWlblyskPJ73kN16UO1tfLOwj40JT2WfGZ/g== X-Received: by 2002:a62:cec3:0:b0:6e0:450c:4a28 with SMTP id y186-20020a62cec3000000b006e0450c4a28mr761387pfg.29.1707173056004; Mon, 05 Feb 2024 14:44:16 -0800 (PST) X-Forwarded-Encrypted: i=0; AJvYcCUv8l7nHBzn2Bdlub4E1yxV75RGWc8+YfI/ZYUKbrk58oaZHuJVOKCFMyxtvcBbuHCJfRv54TwpsQ7oF6IHvjR/Ubalse+Y+AegHLipH7c0uAej5DDm1C7P0ShBhVOo1Y5oN80ZZsHeKZXzSpJ2nUqpcDFT96NANp+kB0vSKnfnntY6DT4JMsucdb9o8UpfrGWGBK0zQ3AICs1n2KSrms02YxAQoDWAMw== Received: from www.outflux.net ([198.0.35.241]) by smtp.gmail.com with ESMTPSA id fn11-20020a056a002fcb00b006dfb8105235sm392409pfb.112.2024.02.05.14.44.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 05 Feb 2024 14:44:15 -0800 (PST) Date: Mon, 5 Feb 2024 14:44:14 -0800 From: Kees Cook To: Eric Biggers Cc: linux-hardening@vger.kernel.org, Rasmus Villemoes , Mark Rutland , "Gustavo A. R. Silva" , Marco Elver , linux-kernel@vger.kernel.org Subject: Re: [PATCH v3 2/3] overflow: Introduce add_wrap(), sub_wrap(), and mul_wrap() Message-ID: <202402051443.A813E4D@keescook> References: <20240205090854.make.507-kees@kernel.org> <20240205091233.1357377-2-keescook@chromium.org> <20240205202145.GB2220@sol.localdomain> Precedence: bulk X-Mailing-List: linux-hardening@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20240205202145.GB2220@sol.localdomain> On Mon, Feb 05, 2024 at 12:21:45PM -0800, Eric Biggers wrote: > On Mon, Feb 05, 2024 at 01:12:30AM -0800, Kees Cook wrote: > > Subject: Re: [PATCH v3 2/3] overflow: Introduce add_wrap(), sub_wrap(), and mul_wrap() > > Maybe these should be called wrapping_add, wrapping_sub, and wrapping_mul? > Those names are more grammatically correct, and Rust chose those names too. Sure, that works for me. What bout the inc_wrap() and dec_wrap() names? I assume wrapping_inc() and wrapping_dec() ? -- Kees Cook