From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pg1-f170.google.com (mail-pg1-f170.google.com [209.85.215.170]) (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 4392D2F25 for ; Sat, 14 May 2022 21:42:41 +0000 (UTC) Received: by mail-pg1-f170.google.com with SMTP id a19so10472200pgw.6 for ; Sat, 14 May 2022 14:42:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=23xyQlazTAPWzzday3S3EoO5Wm7fZvGvsyQkqyX645Y=; b=TMkRhl/wkoxlOPIUjWFpDEdYryjRLo1aur2RO+svl712U8by/JGzX+5ItuVlWn03tA KgpiOLWAc0epLFPuSyHy+n6EnTesI6a5Crv6i50DYOfevDec6pWiGr/qo7ei40Il/CZF 9DlqRR/GnjNe/MZg9aFcb3rMM559MvTBwPk+Y= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=23xyQlazTAPWzzday3S3EoO5Wm7fZvGvsyQkqyX645Y=; b=uqFsBiWCMpJOWMAajZ4Ko3r/aEC/CSw1dQLKc4Hdh4Ct7XhADhyiWzqKIn7Qv+D1S8 STkC95oKGZ0Nb+kvh6XhQI1DdYGsvD3DM72Db0Ifny0wyh04M8NinEBsQUwI7BzC1XLH 1Z3Aiwer2W+aOMdrUMBaEZdyg0+M54Ifhp9OKULd8Pgl332zGRhCNQUBMlory5lmlbDe CrX1Bt0AulnQDrv3igO3kQi2+apoyZseNjIn8QVnFO+cS2WUmUwA0N9ab/F/Fx7ZfPBL rrsgzOe5dZy7p13gkcEXpFX6Yw6j8Sa/AKJZ+J/Q4j6xjyyewL61V8oC3qsxDcLdZaGd v4jQ== X-Gm-Message-State: AOAM531Cn2PDJI9/kjBqCwJr58Ocmxlm3IArONqShh2i0PnB1xcD7yzQ eVhml5nZfY4doPYXkBf6+rAnng== X-Google-Smtp-Source: ABdhPJzM6sSqhlRvKZoHaTHCB67LhQRuHcOSpewjHrxQxN3l5+JJ6IuUuizN+MmH7IWYXI6gsxrCog== X-Received: by 2002:a05:6a00:c91:b0:510:73d6:a890 with SMTP id a17-20020a056a000c9100b0051073d6a890mr10685973pfv.42.1652564560673; Sat, 14 May 2022 14:42:40 -0700 (PDT) Received: from www.outflux.net (smtp.outflux.net. [198.145.64.163]) by smtp.gmail.com with ESMTPSA id h20-20020aa786d4000000b0050dc76281a5sm4083831pfo.127.2022.05.14.14.42.40 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 14 May 2022 14:42:40 -0700 (PDT) Date: Sat, 14 May 2022 14:42:39 -0700 From: Kees Cook To: Sami Tolvanen Cc: linux-kernel@vger.kernel.org, Josh Poimboeuf , Peter Zijlstra , x86@kernel.org, Catalin Marinas , Will Deacon , Mark Rutland , Nathan Chancellor , Nick Desaulniers , Joao Moreira , Sedat Dilek , Steven Rostedt , linux-hardening@vger.kernel.org, linux-arm-kernel@lists.infradead.org, llvm@lists.linux.dev Subject: Re: [RFC PATCH v2 02/21] arm64/vdso: Filter out CC_FLAGS_CFI Message-ID: <202205141442.9DBF84F15C@keescook> References: <20220513202159.1550547-1-samitolvanen@google.com> <20220513202159.1550547-3-samitolvanen@google.com> Precedence: bulk X-Mailing-List: llvm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220513202159.1550547-3-samitolvanen@google.com> On Fri, May 13, 2022 at 01:21:40PM -0700, Sami Tolvanen wrote: > Explicitly filter out CC_FLAGS_CFI in preparation for the flags being > removed from CC_FLAGS_LTO. > > Signed-off-by: Sami Tolvanen Reviewed-by: Kees Cook -- Kees Cook