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,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 B9058C43603 for ; Fri, 6 Dec 2019 22:14:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 82DD624673 for ; Fri, 6 Dec 2019 22:14:30 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="r3PF25I8" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726819AbfLFWO3 (ORCPT ); Fri, 6 Dec 2019 17:14:29 -0500 Received: from mail-pl1-f202.google.com ([209.85.214.202]:55304 "EHLO mail-pl1-f202.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726796AbfLFWO1 (ORCPT ); Fri, 6 Dec 2019 17:14:27 -0500 Received: by mail-pl1-f202.google.com with SMTP id 66so4244935plc.22 for ; Fri, 06 Dec 2019 14:14:27 -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=Ve3ap/e8LZQd2dbv+oe7rMBjURea5FcvbovcdBkDba8=; b=r3PF25I8b9gh7TGG4nyyWOG/IBeyi5leohyetpHGT7HVJVhKrS0Kq4x36qkr37xPQZ H4HOZxl0BVJe13eGlGPV1yZKSRRS5AmoOeRlUDllq58XEGXxaFeTrlkb9BrV5kcixQbm XbGbrkKiH70yhU3gMykfI079m4y0ZDpdOP7kIIKS/yBz18w4YMZf4Pr4H9aBR21ygtcB kY14G1EByPoZ/HSscjak3f91JNKl95S2IyZpSGv5MX3WaPMUnLjTgAsAI0PC749M53m0 8RfjY0MYNA3UUEnoDTDY3HwUrUHVLuT76W4oleiH3t8Kx7xMLKek/nE2jk+/o2pgp2U5 oBkw== 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=Ve3ap/e8LZQd2dbv+oe7rMBjURea5FcvbovcdBkDba8=; b=MbOEXIq3UQmwIJZ3vYZAP0sLb7odNbikmmlDF4+XqeWzsmiThbIQkkVvfGmlqWjyYH qzUxyjNUWsU9Ue2EDF/UgbnLuvupjFoWBUMzrR/mMIE4kK0kpWVT9bJ8x1Tnjau9bkKo 87w0Hp/uDLFs/80DuT4wPeUIQUPtOFi4Pgy+vRc7aXwARMfJQ0BW8HgnbNyqT+XdWujK rCLTEeh3Hku6b4KaJ7GGx8qJkBHY+IABTQZo2Hj5SL5/5LySNPzbXZproA52K71qMYnJ s3Db4cYS/gqIPgyBJlG1Q0sLZiiQJuQKiWpmYcY+Lyuyh5IBie+wNpb0jK07r/igFJaU DrQw== X-Gm-Message-State: APjAAAXc7AY8GFR16aeIoNjRoUmRIxZVa53xoDlq7qg/NrPeN1sP+ptS U8vFizCboDytQkvIepKIVMw0Gw94HMQyQ9HzPX0= X-Google-Smtp-Source: APXvYqwk2eRK+EeshXSfp5tSqqdwzFGqYQg2Gt1CoIRgkLdeR9mCxHtnbRaIQkXosCwRykWO94sSQGC7aLJzBhMw49s= X-Received: by 2002:a63:220b:: with SMTP id i11mr6011463pgi.50.1575670466460; Fri, 06 Dec 2019 14:14:26 -0800 (PST) Date: Fri, 6 Dec 2019 14:13:48 -0800 In-Reply-To: <20191206221351.38241-1-samitolvanen@google.com> Message-Id: <20191206221351.38241-13-samitolvanen@google.com> Mime-Version: 1.0 References: <20191018161033.261971-1-samitolvanen@google.com> <20191206221351.38241-1-samitolvanen@google.com> X-Mailer: git-send-email 2.24.0.393.g34dc348eaf-goog Subject: [PATCH v6 12/15] arm64: vdso: disable Shadow Call Stack From: Sami Tolvanen To: Will Deacon , Catalin Marinas , Steven Rostedt , Masami Hiramatsu , Ard Biesheuvel , Mark Rutland Cc: Dave Martin , Kees Cook , Laura Abbott , 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 Reviewed-by: Mark Rutland --- 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 -- 2.24.0.393.g34dc348eaf-goog