From patchwork Fri May 13 20:21:54 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sami Tolvanen X-Patchwork-Id: 12849371 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 7AF23C433F5 for ; Fri, 13 May 2022 20:23:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1384182AbiEMUXC (ORCPT ); Fri, 13 May 2022 16:23:02 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44794 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1384231AbiEMUWr (ORCPT ); Fri, 13 May 2022 16:22:47 -0400 Received: from mail-yb1-xb4a.google.com (mail-yb1-xb4a.google.com [IPv6:2607:f8b0:4864:20::b4a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BC7ED179C00 for ; Fri, 13 May 2022 13:22:39 -0700 (PDT) Received: by mail-yb1-xb4a.google.com with SMTP id r14-20020a25844e000000b00648bdf7491bso8264424ybm.1 for ; Fri, 13 May 2022 13:22:39 -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=3UaFU5xHj03sZsROlsGwfgYzXTeZAfKKB9B52UkHPts=; b=eCcXC8IEU4TE1wUZ9lhaNpCA7Z0h4DyMFY/4H5NAaxQsccUwtk8sjePd+x1NbczBs6 Ox0P0++T7xXz5z8piJI/aM8tT+OeVA8J6bK2UToqho+Fc+Jf0lOSPvXV6TI4oxl76/45 VD8MFSCK2J1gh7JhBYsOT8o7NGx4Dq5IWxRlcHwu1CzJOD2h09EjVCJnALkxcaud//td oKVpNJ15xxQ7Pw9VU1AfCY+U/VH0XOP1vOZXa4Tp/ktS5ehYSnGnGIW18Kvuu3tBr4ts LVkqDmg5dihnZSeWav46yeycpyXIgsAeDPyLDpaaOHDjpqxXJsukVeHoZb2bUIv6D4vd qCgw== 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=3UaFU5xHj03sZsROlsGwfgYzXTeZAfKKB9B52UkHPts=; b=ApcXOAhnQk1/S2k90yLUkv9Xvt1qRzQEltzCleUZlrNVC8XmPnsOcHCej7WaBdoJko pAuqBPRRyfe03QEUR/zDNkcCArrrflq0WdBZabLuxWQ+npIkiU/KyFDqli8VD+GR+qNa h+7zjVUtsqdL938kLhdAA7nwaG9MW8pqchMsUJGxvl+e7NWfMFO+PKIlAakrZxXOQjJx Th84ZezEBTIW/luZyTFhlvGvXtK/v1nXG2ENQADGjyS1HTc3+KmbqSZQGlPDlLPGWcc3 tKSiU5IG4e2+rZmmD61U28pEKhfKJvthRmv5WaXuMAJuaYpPz4qk2bnPN8Vy6n9RkDsL Q4mw== X-Gm-Message-State: AOAM53228JnfUYsv7WO/l0bRLQsJRtAKKQaWBVbJ+3Nmdmlb4TQ8ncR1 SyIZfo5Fz1Ecpd14hL7DIRCIejoeYXV+qoYHCL8= X-Google-Smtp-Source: ABdhPJy/Xry+6o5/aZvCnAuWwOtasUz4noL3K26Hbe2/oGf4osiyUIQJ54ZDIZxyv42DhCx7eptfqF9TiwS8lip9gso= X-Received: from samitolvanen1.mtv.corp.google.com ([2620:15c:201:2:e0:c17e:c2dc:13eb]) (user=samitolvanen job=sendgmr) by 2002:a25:7243:0:b0:649:1be0:5061 with SMTP id n64-20020a257243000000b006491be05061mr6561779ybc.597.1652473359022; Fri, 13 May 2022 13:22:39 -0700 (PDT) Date: Fri, 13 May 2022 13:21:54 -0700 In-Reply-To: <20220513202159.1550547-1-samitolvanen@google.com> Message-Id: <20220513202159.1550547-17-samitolvanen@google.com> Mime-Version: 1.0 References: <20220513202159.1550547-1-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=BSMde0wfILoH9GAgh/AL2A0KfpejGhMH1EXBp0R87bA=; b=owEB7QES/pANAwAKAUy19oSLvFbuAcsmYgBifr3lS6DgGrgcdlTr4VdqCp+hJ4gok3CvQfxUBLVW A6LaMPeJAbMEAAEKAB0WIQQ1zPtjsoPW0663g5RMtfaEi7xW7gUCYn695QAKCRBMtfaEi7xW7gXFDA CHg4xEbmMadZBDqHqq0UEmifRbgTU4jfyD/g+/XScylIqJWRNr8acWg1Ez0oZ0wjApncrd0VTGbZOG N/N8qRTqHOujf3tWPFlD/3WoW4YHoqB79n1ZD01+aEGVLL5f5SV879mjfR/bQOxEJ2E98v+sgkOGlC c+zxC3gNrduPHvIGuK5jSsQ+g5DW+VP51Lw6g+FQgNRZQjtROp9VfPIFXTyQe8MqbHvDkX/ZFXNAu8 aKQvmfyrQSv32nXwOhRyUvBsq7YMNpEw5tdud1hVmJNg/0dGh2eY/AGjMa5JVsnVN4QbBLvgGhGqT9 camb6c2XcHf9mWoHSlfEG4e81gGiWkWMbkASfkHOBZ6EX/Z5HgYtH9N20zS4fMUYg9Di0ChEBrGYGv YLM333v24SOGwcOKOyNghGoUDw+juh4Quum23MthHk6uV+Ukmf7hTzsvyE7wy1D37AZGJpzk42FpKe 72X8bL5jcVLHUzRFwpfIXccSO7+M1E/jMAgXYvXsGlWA4= X-Mailer: git-send-email 2.36.0.550.gb090851708-goog Subject: [RFC PATCH v2 16/21] 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 Reviewed-by: Kees Cook --- 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_)", /*