From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-yw1-f202.google.com (mail-yw1-f202.google.com [209.85.128.202]) (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 C47C6612E for ; Tue, 30 Aug 2022 23:32:22 +0000 (UTC) Received: by mail-yw1-f202.google.com with SMTP id 00721157ae682-33e1114437fso190879597b3.19 for ; Tue, 30 Aug 2022 16:32:22 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=cc:to:from:subject:references:mime-version:message-id:in-reply-to :date:from:to:cc:subject:date; bh=dj50MXIaDJBD96/1Gdf430/wXU4xb7a84h2xVZMa0Ew=; b=Qy/xMjE+Z9tI/RI2eW9aQXEE+x9bgipZmkl1TRFX4nG3lQ2Cxw/MGc9YBEMVb79P8x K7ZB6jWVCCidlAiCQ0KHSLobGlEUBTBOYT+IN2cosr4rJjNKEzJDFeo0nWGSZgVhOFnN LnJtK+KQLFx71PgotB16ka4GRRJjpTFnPNLg7HhkuXjEppj+KAqhY9tM//ZHz2AfaJ4E ojP4CyQHCBUPqv0EbNTJy1R5yPCLjtX4xD1E5S+rzObYF7P/nQl/buKNJiO0O+4YpcJO KWS4peUjbZVcIeXOVLV02EwcnTADwVU+JJD9CdooT51s51cyuvBlc8byyEyM9/c9zYEC TUsw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=cc:to:from:subject:references:mime-version:message-id:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date; bh=dj50MXIaDJBD96/1Gdf430/wXU4xb7a84h2xVZMa0Ew=; b=KN9H0fmBfKfIQp+k8wJApqK0MBRqbB6VmCtyd9YNvwazzpGfSgU3zwnxEvoqEKjMTO p/epmUFb/8QdH0VZ1zRhr4fZ0ARp8AAReOoS/fD0W1iQKXmzKLV3vr9JzdA3bW5hfOR3 7GNqMCeTw+qHq79MwtMucsDLd7KLMi4Qv3OZHsHjixQj4c/beEPdeLYcqji/LvxHfYCZ 7Nvua3oRgHmYdrCQx2YPiSVUGT1jZfljrI49qUMaiDYAbdCWBi/5LhinE1qmtrFV+uDK zqq/THagPOCggYykptNmb4Zdc371di2HSNji9bT9uxcrCJD509c4MPpahysbqgJ0C1VF qL6A== X-Gm-Message-State: ACgBeo0jyhOuJEY6LfeLreWK7ihIJBnk+GfY8RWPuP8kEpgHjKtYKsWP I89y0ygX76FMHn9C/fHfJnMG+WsFuO7Nk2At+fs= X-Google-Smtp-Source: AA6agR5LroJ1DHbPpfH8aFh9/G1HMs3AO252ceiCeo1jPAZmf7JXzZYp5Fa4eHZtuGTExuaU7+SLdODaNccTaYcpsSo= X-Received: from samitolvanen1.mtv.corp.google.com ([2620:15c:201:2:54d9:7143:6a7d:91d]) (user=samitolvanen job=sendgmr) by 2002:a05:6902:1206:b0:676:e465:24b1 with SMTP id s6-20020a056902120600b00676e46524b1mr13676826ybu.323.1661902342496; Tue, 30 Aug 2022 16:32:22 -0700 (PDT) Date: Tue, 30 Aug 2022 16:31:26 -0700 In-Reply-To: <20220830233129.30610-1-samitolvanen@google.com> Message-Id: <20220830233129.30610-19-samitolvanen@google.com> Precedence: bulk X-Mailing-List: llvm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20220830233129.30610-1-samitolvanen@google.com> X-Developer-Key: i=samitolvanen@google.com; a=openpgp; fpr=35CCFB63B283D6D3AEB783944CB5F6848BBC56EE X-Developer-Signature: v=1; a=openpgp-sha256; l=804; i=samitolvanen@google.com; h=from:subject; bh=PQGbduDYSHEunY6Nux9oR4b8gX3kqUUQ66z3bs0DO/k=; b=owEB7QES/pANAwAKAUy19oSLvFbuAcsmYgBjDp3OHJOh3MpkrcMboNL3mLB+U7xNHC0btjo7mME4 CgYIObyJAbMEAAEKAB0WIQQ1zPtjsoPW0663g5RMtfaEi7xW7gUCYw6dzgAKCRBMtfaEi7xW7ibxC/ 9u8tiBUAu11iMi2jQxB88ZoyRd3XcPtlmEJ49ZT4ibCRTKCQwU7x7cDMnDG2jMK91BvisB+yihmg9w N/xNoX9Du1hqgmpQ189vSRzZ8B3cTextiO0ei30mC5sYpY4O7ZzhfZ2RUhJ9GhDyhAqAEf/dyh6i7R slJI0p2V7MK2rO8Z0jyvl0g73TadyQ3IuIyhqfnc0JWw795W5qT0rTDncrsYsDg9bHqVA69umBLW/E JBpKqxPr5+1G3RypfC6VZNWayPrVcMVECCxIeWoI8JfgWyBD5zQ2Zeyjo3El1kUNH/J3pinc2ucgj0 nCmZucarH0zhjvQSUJC5X8OSCGQyDJClv+hqBEIWhQ0gvLN9UVnXd5Ql7r49YFrN1kk9AWrqjbQ3Sc AD5ZEd5SjOGYRv3rAgmv+XiFslu7d+xB6EyKfNX1+EmfFdYMhyVFQNijCiaFZSRvXJJ7dnhc8wF96j FE3UOfpxc1eA3nQd4sJS9gasOaTmoIocuonggQXaz5kqM= X-Mailer: git-send-email 2.37.2.672.g94769d06f0-goog Subject: [PATCH v4 18/21] 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 Content-Type: text/plain; charset="UTF-8" The compiler generates __kcfi_typeid_ symbols for annotating assembly functions with type information. These are constants that can be referenced in assembly code and are resolved by the linker. Ignore them in relocs. 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_)", /* -- 2.37.2.672.g94769d06f0-goog 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 50B6AECAAA1 for ; Wed, 31 Aug 2022 00:04:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; 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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org The compiler generates __kcfi_typeid_ symbols for annotating assembly functions with type information. These are constants that can be referenced in assembly code and are resolved by the linker. Ignore them in relocs. 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_)", /* -- 2.37.2.672.g94769d06f0-goog _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel