From patchwork Fri Apr 29 20:36:40 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sami Tolvanen X-Patchwork-Id: 12832756 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6962AC433EF for ; Fri, 29 Apr 2022 20:37:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1380914AbiD2UlL (ORCPT ); Fri, 29 Apr 2022 16:41:11 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53320 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1380947AbiD2UlC (ORCPT ); Fri, 29 Apr 2022 16:41:02 -0400 Received: from mail-yw1-x114a.google.com (mail-yw1-x114a.google.com [IPv6:2607:f8b0:4864:20::114a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0A8D3C90FC for ; Fri, 29 Apr 2022 13:37:29 -0700 (PDT) Received: by mail-yw1-x114a.google.com with SMTP id 00721157ae682-2eb7d137101so84825677b3.12 for ; Fri, 29 Apr 2022 13:37:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=date:in-reply-to:message-id:mime-version:references:subject:from:to :cc; bh=pCRF8WxuKsJLhQegFtXAhQOgdkZIXxpUFMBNWofutJg=; b=rb5PJBXqZ7PDnTljG6ifIE8gyd72IC34q/VtcjXuyOJl6AMtdmAjmsfq0lfuEQekK+ pMx1HTeDGFvMcB0zYoRjn8iodh+Cl+ug6t0NujoKdJdq5JfOpcm53hx9cYRc9czaoM6V wCCo8uZtcZNwjZnC3yaMKuANSRu6vyIDn4uQlpbz9pEsr0iVULxkNpsgUh09QxYqO+bt 8ih8Yb01J1emTtSHlr8jVVrGUw/d4znoCzHf779F0LEMOL9mgrcOcmkCJcbSd2cORoDr xqfesnGB09orA1eomT3hmGVMGTGc6KccZjw7UoOwSyooZfLr+oU9LAzuLtNDPJOImR+j aHHg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=pCRF8WxuKsJLhQegFtXAhQOgdkZIXxpUFMBNWofutJg=; b=P1ai0FvKK6q6xVAEiqITwGL79CrM9jXtWyd9p/OPhpYM92iCjZTesiTKAQlYTLPSJD 6dHOVY5jd1pvLBpuC1AjrQdfmlXYOcKJI4J6fcMSwVqsrzzq2Vnl3DKLb+tLmvBApw99 /6upBjexLu85BmtdXQQUcP6CCL6wKgHgEbOWZQ/W6Y3eHce2eoCq6AcJJuERJp6Uc5PT L25rsDpKiz+ultLwheeuXQ0j8DAiztjszexxWmcRhqizulpf2VdSz04Kl7fpvEMOZf6Q 5TVRNhFIU8O3q9xTOFsXcdGcgdyQLQE2tSfmMiFThrTmjhBnno4Bc/3+wF54/lbO7rMa gHGw== X-Gm-Message-State: AOAM533PU3KJOdvMOnOQ8Nl7Q5JZ68zlE1Jis2hVYjlpBL6aQIVGpFjc cLykyVfnGMwYKjxzn/SLPzMso5qerYMD50oBi8w= X-Google-Smtp-Source: ABdhPJxW/4+AcaZSu3uuWyLU6uIyltSWFVdpdAXqDeDs5bikx77gj1C032JW2iKcFOB1vCKNvHaYzdWvZDktOIt6B6I= X-Received: from samitolvanen1.mtv.corp.google.com ([2620:15c:201:2:351:bea9:f158:1021]) (user=samitolvanen job=sendgmr) by 2002:a0d:ddcf:0:b0:2f7:dc0d:93e0 with SMTP id g198-20020a0dddcf000000b002f7dc0d93e0mr1144605ywe.9.1651264648287; Fri, 29 Apr 2022 13:37:28 -0700 (PDT) Date: Fri, 29 Apr 2022 13:36:40 -0700 In-Reply-To: <20220429203644.2868448-1-samitolvanen@google.com> Message-Id: <20220429203644.2868448-18-samitolvanen@google.com> Mime-Version: 1.0 References: <20220429203644.2868448-1-samitolvanen@google.com> X-Developer-Key: i=samitolvanen@google.com; a=openpgp; fpr=35CCFB63B283D6D3AEB783944CB5F6848BBC56EE X-Developer-Signature: v=1; a=openpgp-sha256; l=641; h=from:subject; bh=DxQc6EGDGB8zEXE4dDnKQIh2BeDsSr/ulqb1I/8a6/M=; b=owEB7QES/pANAwAKAUy19oSLvFbuAcsmYgBibExXdkK4E+eES2dE3iysIrEucJWLi1au+dxYyIiv PoIr2IqJAbMEAAEKAB0WIQQ1zPtjsoPW0663g5RMtfaEi7xW7gUCYmxMVwAKCRBMtfaEi7xW7jN+C/ 9NuHLivGVpdnQ5h09S1KucfK0dDYhnxeXvjJsVMWhnO+lQDVoYHCCl5XS5s1fIVTqbdKMprLkXjWt6 pmEkoXNNEA9NLrUjE6YWmfUmUHDQ5qLnl1zZRAdfrDM+TwEdRrdk76z3O1H72HxKW2Fhdo0fp7rO/S AfFpWddva2zdjw6GUPJcbTB08W2/n/QuoReY4FJI2CiZ5dhhjeP9UA+yefvCFQNmyhaUX30cg8Jxm8 H651xE0f2VrSPBcSVmrVMN29dgeghi1M0QnTu3SWABhA9Zq/sWAq4dmOhnHAjFfwPVr/B5TDzIadY0 yt/QHe4RXgBdIpCeYc+nV8hl/cRLKQ+KtM1YfepHZV2Pn7EqOwnvmiMRpDIt8VWv/W5SqdpE4SNG4K wS1d/ZasQIzQxU+EC3z7E5RijhdSJh9X5+J0iYeI4YuT6IhQsCVsn3zqUwQLXusdt9Iu6hwIiOOJ/5 V86zuETn5IGcbe1euGU6/Eo3BmgfEx8DHtnulobHhXn+A= X-Mailer: git-send-email 2.36.0.464.gb9c8b46e94-goog Subject: [RFC PATCH 17/21] x86/tools/relocs: Ignore __kcfi_typeid_ relocations From: Sami Tolvanen To: linux-kernel@vger.kernel.org Cc: Kees Cook , 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, Sami Tolvanen Precedence: bulk List-ID: X-Mailing-List: linux-hardening@vger.kernel.org Ignore __kcfi_typeid_ symbols. These are compiler-generated constants that contain CFI type identifiers. Signed-off-by: Sami Tolvanen --- arch/x86/tools/relocs.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/x86/tools/relocs.c b/arch/x86/tools/relocs.c index e2c5b296120d..2925074b9a58 100644 --- a/arch/x86/tools/relocs.c +++ b/arch/x86/tools/relocs.c @@ -56,6 +56,7 @@ static const char * const sym_regex_kernel[S_NSYMTYPES] = { "^(xen_irq_disable_direct_reloc$|" "xen_save_fl_direct_reloc$|" "VDSO|" + "__kcfi_typeid_|" "__crc_)", /*