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 61452C54798 for ; Tue, 27 Feb 2024 18:01:58 +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:In-Reply-To:MIME-Version:References: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=+7c3b/rWyd0uIP1+sa6a9wPY9HK7V3BlT9X0OHKQN2U=; b=PvTF70fqn3qgy4 RiESDDEprC14wuDXcHhP0Pg94hZM7Tlld/CkX21ubBa9QxDnPsiMcsc1HDUxliAfdHHLgGTEKsRVT EIWdNY82WWOZFhiUxUtAdg2j05BumatlTuTFlRjPNt48V7dG259WEtaR0GP2HPXTXQrxkgJJ6loQa LM4e6CKrHRxhQN0WNacUvvPyZdUZb4eMPsV1C4JqSKQiGxgKzRvFq5RjP04QsoUzqtio6+ozwKWuv 8f8vQh1qA59+KeC/LUikGU3IY61amDvql5VFKlzmRql96c0nq04tapZ6iWUe9VRJwjTPxZzKsEKbv B5sTNc6rVHsjHl9AqyFA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rf1lw-00000006LLb-3HBb; Tue, 27 Feb 2024 18:01:44 +0000 Received: from mail-pf1-x42b.google.com ([2607:f8b0:4864:20::42b]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rf1lt-00000006LKl-3BIC for linux-arm-kernel@lists.infradead.org; Tue, 27 Feb 2024 18:01:42 +0000 Received: by mail-pf1-x42b.google.com with SMTP id d2e1a72fcca58-6e544f927d4so27411b3a.0 for ; Tue, 27 Feb 2024 10:01:41 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; t=1709056900; x=1709661700; darn=lists.infradead.org; h=in-reply-to:content-transfer-encoding:content-disposition :mime-version:references:message-id:subject:cc:to:from:date:from:to :cc:subject:date:message-id:reply-to; bh=T9GXzY8wD7hiWvdgZ/hX89fgqhixPVAq/3JQfnan5DM=; b=GqOJcMmoBxBBfu9lK8EDB/4xNkqlSsP0HjqiSXhLAlYch6wzO9m9Q/z4Qh2/1Zx3JO DTPbrwQI/kYJIhWq0v+e63GBamT4BkP/8MjfFSj6Xz3Wwo4rI1oDtt7nIDUSvU9onb6t 6kG/+VIJthZxGCF3ow+fsi9biSvl0knmb/izY= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1709056900; x=1709661700; h=in-reply-to:content-transfer-encoding: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=T9GXzY8wD7hiWvdgZ/hX89fgqhixPVAq/3JQfnan5DM=; b=uUJqkg9KdE6Q5n+P8zdJjdKI5tkA5lNcbuPu3zrR4m55GHlhynWODk5geCOdwqgaV+ jq0WlzK8UXX1fejNTta8WwJvnXljI9atR+F2xcNIo1+EjE+QFNLL9uQnYzX1yc+yZAIN lMtOoIpw4XR1aE/QO0zUdlhywb1x6prEh+Twup7uIk7KkipMhJIlkD82yQBa3XVu9T28 UGbeGcFFB41SKU7F1RxEdFk1KVLUew3Tb9Kipypc/1IMy0kyBGKn8Ehu/i1W8GnrUkmP VxjJAcsi/mS2tTK+5aUBaX1tKeuOm3tLbat8/A8R+kQOkcOeQXZXuj3H9IpBWYiXWYo6 52xg== X-Forwarded-Encrypted: i=1; AJvYcCXZhJNeX7/NQ00iuWrBAxpKV68O4tWA9IC2VqcblXbe4AjRXXGRREhfrDcg4jZ/5AuMMz3GvLTauyVwoDMdVgJMIgamTyuVWOrtFWoBRH3VgtsUUbo= X-Gm-Message-State: AOJu0Ywa6F+gdqEoUmCxJZinDueiD3qokNseg+ApGUMYalEPYHr1uq7U ks3Rr+MFF0BySlMRmHm7b5uGtt9yJOicC1S4gTuM3zLqFfH2hf/czCJuRGEbfA== X-Google-Smtp-Source: AGHT+IGXbCpSY0hW+YqJlgwhFhFoVGU0uqU5vc7aN95rVYXxdyNoW4OnDKVWbEbDMSf+RV72+HZS5g== X-Received: by 2002:a05:6a00:9283:b0:6e5:32e9:2954 with SMTP id jw3-20020a056a00928300b006e532e92954mr92342pfb.16.1709056900576; Tue, 27 Feb 2024 10:01:40 -0800 (PST) Received: from www.outflux.net ([198.0.35.241]) by smtp.gmail.com with ESMTPSA id c8-20020a62e808000000b006e4625a0f0dsm6169653pfi.169.2024.02.27.10.01.40 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 27 Feb 2024 10:01:40 -0800 (PST) Date: Tue, 27 Feb 2024 10:01:39 -0800 From: Kees Cook To: Linus Walleij Cc: Russell King , Sami Tolvanen , Nathan Chancellor , Nick Desaulniers , Ard Biesheuvel , Arnd Bergmann , linux-arm-kernel@lists.infradead.org, llvm@lists.linux.dev Subject: Re: [PATCH 0/7] CFI for ARM32 using LLVM Message-ID: <202402270958.C9B4B0B3@keescook> References: <20240225-arm32-cfi-v1-0-6943306f065b@linaro.org> <202402261703.695B87E6@keescook> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240227_100141_830383_73826A35 X-CRM114-Status: GOOD ( 18.30 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org T24gVHVlLCBGZWIgMjcsIDIwMjQgYXQgMDI6NDg6MTNQTSArMDEwMCwgTGludXMgV2FsbGVpaiB3 cm90ZToKPiBPbiBUdWUsIEZlYiAyNywgMjAyNCBhdCAyOjA24oCvQU0gS2VlcyBDb29rIDxrZWVz Y29va0BjaHJvbWl1bS5vcmc+IHdyb3RlOgo+IAo+ID4gT24gU3VuLCBGZWIgMjUsIDIwMjQgYXQg MDk6MDg6MDlQTSArMDEwMCwgTGludXMgV2FsbGVpaiB3cm90ZToKPiA+ID4gVGhpcyBpcyBhIGZp cnN0IHBhdGNoIHNldCB0byBzdXBwb3J0IENMQU5HIENGSSAoQ29udHJvbCBGbG93Cj4gPiA+IElu dGVncml0eSkgb24gQVJNMzIuCj4gPgo+ID4gWWF5IQo+ID4KPiA+IElzIENPTkZJR19DRklfUEVS TUlTU0lWRT15IGV4cGVjdGVkIHRvIHdvcmsgd2l0aCB0aGlzIHNlcmllcz8KPiAKPiBJIGVuYWJs ZSB0aGF0IGFuZCB3aGF0IGhhcHBlbnMgd2hlbiBJIHRyaWdnZXIgYSBjcmFzaCBpcyB0aGF0IHRo ZQo+IHByb2Nlc3Mgc2hlbGwgaXMga2lsbGVkIGFuZCBJIHJldHVybiB0byBsb2dpbiBwcm9tcHQg KGJ1c3lib3gpLgo+IEkgZ3Vlc3MgdGhhdCBpcyBleHBlY3RlZCBiZWhhdmlvdXIgZm9yIHBlcm1p c3NpdmU/CgpObywgcGVybWlzc2l2ZSBzaG91bGQganVzdCBpc3N1ZSBhIFdBUk4gYW5kIGNvbnRp bnVlIHJ1bm5pbmcuIEkgdGhpbmsKeW91IG5lZWQgd2lyZSB1cCByZXBvcnRfY2ZpX2ZhaWx1cmUo KSwgc2VlIGNmaV9oYW5kbGVyKCkgaW4gYXJtNjQuCgpCdXQgbm9uLXBlcm1pc3NpdmUgaXMgd29y a2luZyBncmVhdCEgOikKCi0tIApLZWVzIENvb2sKCl9fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fCmxpbnV4LWFybS1rZXJuZWwgbWFpbGluZyBsaXN0CmxpbnV4 LWFybS1rZXJuZWxAbGlzdHMuaW5mcmFkZWFkLm9yZwpodHRwOi8vbGlzdHMuaW5mcmFkZWFkLm9y Zy9tYWlsbWFuL2xpc3RpbmZvL2xpbnV4LWFybS1rZXJuZWwK