From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-yb1-f202.google.com (mail-yb1-f202.google.com [209.85.219.202]) (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 28A89612E for ; Tue, 30 Aug 2022 23:32:26 +0000 (UTC) Received: by mail-yb1-f202.google.com with SMTP id w63-20020a25c742000000b006960ac89fedso881017ybe.18 for ; Tue, 30 Aug 2022 16:32:26 -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=lxwsXrI3Mz5fmQ5/zOX86abUuUXDGoEtutr5sfPTzdM=; b=ICOfaU59KFOn1u8tj+jNF7yA54b5eS6xOe+IMHATV8lUzWB/2X2Z7ndebW8SuDJbZp zZExhr0GX7vlb+myJsY4FJfR80s0uELf0QyRcIe5XQhj9GRlUZuBufvTnZ4HaOz+pmTg vdL2ZN5DasdfM+e3GGko29L8VL3IBBrhWSRT/JGEm5aRqwEo0EICXQTYqdYDldYAvxbY zspss2WPicINxssrlAuMaj3Ax9CPJPHBxNEmMh5eqte/8VwVdXlsUnYo+zxaeu9trZcF 4XfnE3V82BgHAMxrXG3UrzKWzoe8+mEiXwyVd+uAnUcEZPy39B6xZ9xV+vlP87uDR5ke kJIw== 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=lxwsXrI3Mz5fmQ5/zOX86abUuUXDGoEtutr5sfPTzdM=; b=Z3EXjQu9eiy5WXrUBSE5nrvX7REjjt6r2lyrHNjDZbKpAbjB7sPcpswSFYDm5zpO04 AWIlpsUVlz6Z39ocyEgF+BhQuG42Abyxu8BjSiHoqoQ2Xd0Ftk8s6qnl44Gngk5QRXzw fX+eF237BWBIb02YP76mWJR7lhLDUqDUwEBWO7VHOm7wanxZa8w9CVjFP2DO22v6vN0O Sl0pc+QUMiTjmMdbOGvlArygm9HaLWYnqMZHvgiEJHiJKUXEscDGr5n+RfhSBCtuOs/w 7FIzUs8z215UGZKHt9ohF1udKlGvLlrZVFmINVYhExXbasMZvQduCKbCWJLsgfc6QLZw j9lA== X-Gm-Message-State: ACgBeo1rqioGuMHCPrgQ27XbA/Jo3PYxOQOSIHnOJjPjVfvW6vfEHT0n /bRk1KYKo/1MgXftgQftY3bheWeFK4398AtCHjc= X-Google-Smtp-Source: AA6agR4fE6Gg8awQx2KS9WtJeU46JESb48vItR61XAln2KMXiSf46hjOiUeXjrEcWkyckSPoadljKPgTp5O6PLcizdU= X-Received: from samitolvanen1.mtv.corp.google.com ([2620:15c:201:2:54d9:7143:6a7d:91d]) (user=samitolvanen job=sendgmr) by 2002:a25:5986:0:b0:694:f850:223f with SMTP id n128-20020a255986000000b00694f850223fmr13658199ybb.491.1661902345267; Tue, 30 Aug 2022 16:32:25 -0700 (PDT) Date: Tue, 30 Aug 2022 16:31:27 -0700 In-Reply-To: <20220830233129.30610-1-samitolvanen@google.com> Message-Id: <20220830233129.30610-20-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=1934; i=samitolvanen@google.com; h=from:subject; bh=j+dRbdVg7Q78Lk00de2uzEaCRhsdMEDN+wU7yhAtB6I=; b=owEB7QES/pANAwAKAUy19oSLvFbuAcsmYgBjDp3PCTTAdV8Hk1XXJcZvSvg5+O6k1Ozq2feAV3JZ bXDWub2JAbMEAAEKAB0WIQQ1zPtjsoPW0663g5RMtfaEi7xW7gUCYw6dzwAKCRBMtfaEi7xW7uJqC/ 9g0WEa/wq7GPSj/jsZkwP+eo20vbuIdBILQjyKx6g3zSYpJxIRdSTMe/Ft9rn+C6apdUFx310uNdbM 629LRshuNEW20b98k/SIj+1wQBpmaF3JtY0zXTo91YeKUtGNRxbQqIDLdHbnE8iyAM3byp4uwuIQXi 62aPeT8h8d1R6FQXR/WCSNJ6FoyOhql2RVeaYgoEmWccYItjnIVyldJJ3ahwyvu+RHqZzqz5Jm4uW3 Gq8MD/T/GZ5ZLuipErCj1iOaif8sJ1q2jjAQbsvNRcYvv6V600Vz9ABIcvr24nYx5sk2i/u7A6KU9/ gvrGM0vh9P1e1gyTjGQF2puMGcf1PHLlUosOGkL7cslheQRw6lVU5hdOW8NKEBpfjpYUSY+41+V6zZ 7ph644d9uMXOQS8kUtyAtiegxWqdCYYCY4EDa/ooM/v+1or9C+V8CFquTZnOFKmbfjbRYgc9b8iUp7 lfdI5ThNkCnogOoZJn6A5Br9rWg1myT1DLEMipq1Dxs4k= X-Mailer: git-send-email 2.37.2.672.g94769d06f0-goog Subject: [PATCH v4 19/21] x86: Add types to indirectly called assembly functions 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" With CONFIG_CFI_CLANG, assembly functions indirectly called from C code must be annotated with type identifiers to pass CFI checking. Add types to indirectly called functions. Signed-off-by: Sami Tolvanen Reviewed-by: Kees Cook --- arch/x86/crypto/blowfish-x86_64-asm_64.S | 5 +++-- arch/x86/lib/memcpy_64.S | 3 ++- 2 files changed, 5 insertions(+), 3 deletions(-) diff --git a/arch/x86/crypto/blowfish-x86_64-asm_64.S b/arch/x86/crypto/blowfish-x86_64-asm_64.S index 802d71582689..4a43e072d2d1 100644 --- a/arch/x86/crypto/blowfish-x86_64-asm_64.S +++ b/arch/x86/crypto/blowfish-x86_64-asm_64.S @@ -6,6 +6,7 @@ */ #include +#include .file "blowfish-x86_64-asm.S" .text @@ -141,7 +142,7 @@ SYM_FUNC_START(__blowfish_enc_blk) RET; SYM_FUNC_END(__blowfish_enc_blk) -SYM_FUNC_START(blowfish_dec_blk) +SYM_TYPED_FUNC_START(blowfish_dec_blk) /* input: * %rdi: ctx * %rsi: dst @@ -332,7 +333,7 @@ SYM_FUNC_START(__blowfish_enc_blk_4way) RET; SYM_FUNC_END(__blowfish_enc_blk_4way) -SYM_FUNC_START(blowfish_dec_blk_4way) +SYM_TYPED_FUNC_START(blowfish_dec_blk_4way) /* input: * %rdi: ctx * %rsi: dst diff --git a/arch/x86/lib/memcpy_64.S b/arch/x86/lib/memcpy_64.S index d0d7b9bc6cad..e5d9b299577f 100644 --- a/arch/x86/lib/memcpy_64.S +++ b/arch/x86/lib/memcpy_64.S @@ -2,6 +2,7 @@ /* Copyright 2002 Andi Kleen */ #include +#include #include #include #include @@ -27,7 +28,7 @@ * Output: * rax original destination */ -SYM_FUNC_START(__memcpy) +__SYM_TYPED_FUNC_START(__memcpy, memcpy) ALTERNATIVE_2 "jmp memcpy_orig", "", X86_FEATURE_REP_GOOD, \ "jmp memcpy_erms", X86_FEATURE_ERMS -- 2.37.2.672.g94769d06f0-goog