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 8F2FCCA9ED0 for ; Fri, 1 Nov 2019 22:12:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 650372085B for ; Fri, 1 Nov 2019 22:12:41 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="mLcd5Ko+" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728072AbfKAWMk (ORCPT ); Fri, 1 Nov 2019 18:12:40 -0400 Received: from mail-pg1-f201.google.com ([209.85.215.201]:36837 "EHLO mail-pg1-f201.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727270AbfKAWMg (ORCPT ); Fri, 1 Nov 2019 18:12:36 -0400 Received: by mail-pg1-f201.google.com with SMTP id h12so8049832pgd.3 for ; Fri, 01 Nov 2019 15:12:35 -0700 (PDT) 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=mLcd5Ko+fJmhjxDMoBpGZ3EPC3b/VP/PBLdcmlypMJNdCOc5u9jhjSLWUNRMYr69hx U2P5JSWVYdV6u8EzfA94UAbX9w5Q1ZrloIyJVyjdf/ObF5XN+RiQraEntwZF84tiJw4A SKbzKEtQORywvZdxPhMYx0LHvfikuCCPY9XvjfKtjRiin1Jn0QFeomQACCaJo3jt8lCW KyuDz5lfuSMpAGWUw7ut45j+6bJefZga8POnR6VI0FVyWw/cL8vyvxBQD9C59E1UjFOA 7acbvIVDECPMMh62wKUfHOE3f3OZYuymQJbmahdFgydr8nJ0p/3u8CSBUyJzVVefqNG+ Z8oA== 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=nS0W8iySoJXR3tyEUc1gWB72bj23LW7BoDqKjK9V2WtIhrFXA7iGjIegRJNIKzDct1 VaYt5NttTXW94STInSDfFVhV2VQZIwcTlWc62/Bqq6aiEdaM6HBifNce7UlgPsu23LT4 CbbWsfTyHb/zGT8fZqcq1wx94w4oRIzr1THvehd8BsyAsCCUzYPTQtfk2JQU+oivSlP6 XUpolHyRtFhW8H2xXoZk1spWn0VANkDP/jBHuyg+fzRyyLqsD4QfdfGy/EGoih0smubG +PTN8CmS7TaaeZHBb71om00Hrv4qbU4dVRrdWOP8zKl69xt9ilD9TdR9u952JntsgCwr Awzw== X-Gm-Message-State: APjAAAWqxWrH72nAl6FWwQvh8SPCYe7SmSLlVSBv0iXZjFYvxbuklDws ZRX4JaS8BsDZoNv0CvAj3G/sCx5B2dgVRuqqvNM= X-Google-Smtp-Source: APXvYqxeW4tUSlj5Rjy/RV2utncaJwaQyF3tWO3lBVE2VevumOyR70VNIZ9Nj/gJhm+HF4+zxBXbctrnYgLnOQF1Wjw= X-Received: by 2002:a63:d20c:: with SMTP id a12mr14724175pgg.402.1572646354642; Fri, 01 Nov 2019 15:12:34 -0700 (PDT) Date: Fri, 1 Nov 2019 15:11:48 -0700 In-Reply-To: <20191101221150.116536-1-samitolvanen@google.com> Message-Id: <20191101221150.116536-16-samitolvanen@google.com> Mime-Version: 1.0 References: <20191018161033.261971-1-samitolvanen@google.com> <20191101221150.116536-1-samitolvanen@google.com> X-Mailer: git-send-email 2.24.0.rc1.363.gb1bccd3e3d-goog Subject: [PATCH v4 15/17] 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