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 X-Spam-Level: X-Spam-Status: No, score=-14.6 required=3.0 tests=DKIMWL_WL_MED,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, UNWANTED_LANGUAGE_BODY,URIBL_BLOCKED,USER_AGENT_GIT,USER_IN_DEF_DKIM_WL autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9A96FC5DF60 for ; Tue, 5 Nov 2019 23:56:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3B72F21A49 for ; Tue, 5 Nov 2019 23:56:55 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="QfiPTkyl" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387644AbfKEX4y (ORCPT ); Tue, 5 Nov 2019 18:56:54 -0500 Received: from mail-qk1-f202.google.com ([209.85.222.202]:38941 "EHLO mail-qk1-f202.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2387601AbfKEX4t (ORCPT ); Tue, 5 Nov 2019 18:56:49 -0500 Received: by mail-qk1-f202.google.com with SMTP id s3so22994756qkd.6 for ; Tue, 05 Nov 2019 15:56:49 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:in-reply-to:message-id:mime-version:references:subject:from:to :cc; bh=oB4lIvjzdBiHgRAUphuiQVPgI+jp2K5bMoUCGUiH4hk=; b=QfiPTkylKak2JP/fA92kLS2kHYHGvI0ROKKMGBuahal4YLtzvGBJN27XjNyiQH8HG6 yGlyTyrU/unO2GWm0Nv4aMpTNLKbJN+tCvpwionJjZcpDaxtYqxpVnIYWW0enJwD9cGu H3LPc6bHWpLSwRsuEbG1JVtUql2ni5CS0AKG2Gtvj/sOGcnFyVzwIGABxUDq4hnShW0d YrnkM62CleNkLuir4Rfyub+T9Qd7Ss628T/1ROy/StYjkO1JBGOTm6WgyQ7LRFXQEEsm JL468RJSiozD/j2M3Vi+OnMGSwmwEQH4MedG0ZFkg+53Rwgl2MeC2pLijfEUHj7jkGJ/ 9N/w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=oB4lIvjzdBiHgRAUphuiQVPgI+jp2K5bMoUCGUiH4hk=; b=aWdSA4bBnIxObWUPueebOcM/c3yN36wZRYeE7vp1ldJymhD/MkUTRa3+W2YYTrLk7E c7D5mYBvN3BKu9vJd/PxXkUH6rjx9o1LsZJh0k12XrLChs+FQXUY62RjsgW5UFHpp0mB aIFhFrujw02OJqaygPvHZ8LUOBJZN7nBkprrdwqetjw4IYffg9ReHOLPYDJNcPFWlQQF O9PnaNJ8wVlG9jqkePHEuEw3cn47So2x/ng++C1FZmOYLdJGSpzEWFcQEzM31tDH1EuK PrPqEy0mQsA8cFHXAq9mJ0pKe0PGeNlSwNjghdSNWdIVBBlEo/+sVEG37KnyR1ESbHXh Sa0A== X-Gm-Message-State: APjAAAXreAC1oIVw2A6NVv6doCvuE9G34UJBgILlIe+GUJ1m4OVVLBD3 3mZlh2BeT+qyTkpYkCi3cHXZppP4EoSunfzkMg8= X-Google-Smtp-Source: APXvYqzD4X/kPtbk+w3gExO5Bezjz7X/3F/Tl84XtD5Pt1TYYSMyOibW/2GJGTtsQO1axnooT5H2E3H7HeWsFEsu76A= X-Received: by 2002:ac8:4543:: with SMTP id z3mr20376230qtn.41.1572998208364; Tue, 05 Nov 2019 15:56:48 -0800 (PST) Date: Tue, 5 Nov 2019 15:56:06 -0800 In-Reply-To: <20191105235608.107702-1-samitolvanen@google.com> Message-Id: <20191105235608.107702-13-samitolvanen@google.com> Mime-Version: 1.0 References: <20191018161033.261971-1-samitolvanen@google.com> <20191105235608.107702-1-samitolvanen@google.com> X-Mailer: git-send-email 2.24.0.rc1.363.gb1bccd3e3d-goog Subject: [PATCH v5 12/14] arm64: vdso: disable Shadow Call Stack From: Sami Tolvanen To: Will Deacon , Catalin Marinas , Steven Rostedt , Masami Hiramatsu , Ard Biesheuvel Cc: Dave Martin , Kees Cook , Laura Abbott , Mark Rutland , Marc Zyngier , Nick Desaulniers , Jann Horn , Miguel Ojeda , Masahiro Yamada , clang-built-linux@googlegroups.com, kernel-hardening@lists.openwall.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Sami Tolvanen Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Shadow stacks are only available in the kernel, so disable SCS instrumentation for the vDSO. Signed-off-by: Sami Tolvanen Reviewed-by: Nick Desaulniers Reviewed-by: Kees Cook --- arch/arm64/kernel/vdso/Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm64/kernel/vdso/Makefile b/arch/arm64/kernel/vdso/Makefile index dd2514bb1511..a87a4f11724e 100644 --- a/arch/arm64/kernel/vdso/Makefile +++ b/arch/arm64/kernel/vdso/Makefile @@ -25,7 +25,7 @@ ccflags-y += -DDISABLE_BRANCH_PROFILING VDSO_LDFLAGS := -Bsymbolic -CFLAGS_REMOVE_vgettimeofday.o = $(CC_FLAGS_FTRACE) -Os +CFLAGS_REMOVE_vgettimeofday.o = $(CC_FLAGS_FTRACE) -Os $(CC_FLAGS_SCS) KBUILD_CFLAGS += $(DISABLE_LTO) KASAN_SANITIZE := n UBSAN_SANITIZE := n -- 2.24.0.rc1.363.gb1bccd3e3d-goog