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 9903DC54FD0 for ; Mon, 27 Apr 2020 16:00:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 70CA92076A for ; Mon, 27 Apr 2020 16:00:56 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="aKKOaYv8" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728600AbgD0QAz (ORCPT ); Mon, 27 Apr 2020 12:00:55 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48516 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1728517AbgD0QAx (ORCPT ); Mon, 27 Apr 2020 12:00:53 -0400 Received: from mail-yb1-xb49.google.com (mail-yb1-xb49.google.com [IPv6:2607:f8b0:4864:20::b49]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id F08C3C0610D5 for ; Mon, 27 Apr 2020 09:00:52 -0700 (PDT) Received: by mail-yb1-xb49.google.com with SMTP id j14so20900637ybt.10 for ; Mon, 27 Apr 2020 09:00:52 -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=s5XAabWLI2BrMJh1ovnuwgRiP/5q7kOCrh3Tv97TlA0=; b=aKKOaYv8P84S78HqqnTCVvsVcMXU5SuB2uvNssb9dPS+wTPsWhzH4tykYH1PsvII8g Jd/hsa/Mgbp25Jeg8kQqz5FruH6lUYId1eE5kTscIN8QaYWmGyGrs5QWCnBs4rAdSgXQ zC0Nlt1KC7ARBPh/nOWpPnDWG0rRtqwjW8jYc28CX08RgkR6SRw7KhBHzjhgOoqClVSa 24U1Bn/ippHj5neJKtLWLh9eYKgPspBRD588z3b2ONTvZ+YfHBsPfig2qNeCQSypkVrT Yzp1OhGBKTNMPpcFLH0mbf95THoQkUSgEmKq+w0AYmnWxJt379tb0t0TUMJlMmHfTMKd cfmg== 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=s5XAabWLI2BrMJh1ovnuwgRiP/5q7kOCrh3Tv97TlA0=; b=OjTgQxAVRqe7V4wvCXuyrnq+0WHzP4+dlQ1BJPGuZghUzoEGyzNcVKdLWXfVf4QcfK AvEr4CDBUMwMMs0Nb2DvpkRoCNDdgcIhvkEzX7GDza/RAiX3GkKBCqX4FOKQO+eXLfnG HXPeXkI7eYyRJvvozBV5lufwlo6p1yfkKGPFHFBQA/14JQyazgoN8AWx+hW4GtOsOt8h FTBG/bcHz5rEWMFMg8/PVG/xhp5lMZh7ChihuMh6PpIvj355g0RIPCsSrCDbXFLEs/Gz gIbTsRDDPt0FDicz2y8tFWBQZnGNfuvEFZlOkvby+hKgMI36YkeT+S2WxSL7vd0qKnft Mcmg== X-Gm-Message-State: AGi0PuYAxWHkWNwg+0Uofs9bOCh0gucBsQwLaPLwNtS6bMeE4g8dl1A9 BnRNlYMiDZvL3v0QmQaTQLN7c8pQ17rs+tU84dA= X-Google-Smtp-Source: APiQypIC7qXsP5qbhdeCuYbEm/RDRXHOxeiSr4jdV4m9YjAk4hfpiSrYO6gGIVT/CP156YV9CFT4O6s/Zh/4ptwP/o4= X-Received: by 2002:a25:abed:: with SMTP id v100mr3797424ybi.96.1588003251771; Mon, 27 Apr 2020 09:00:51 -0700 (PDT) Date: Mon, 27 Apr 2020 09:00:14 -0700 In-Reply-To: <20200427160018.243569-1-samitolvanen@google.com> Message-Id: <20200427160018.243569-9-samitolvanen@google.com> Mime-Version: 1.0 References: <20191018161033.261971-1-samitolvanen@google.com> <20200427160018.243569-1-samitolvanen@google.com> X-Mailer: git-send-email 2.26.2.303.gf8c07b1a785-goog Subject: [PATCH v13 08/12] arm64: vdso: disable Shadow Call Stack From: Sami Tolvanen To: Will Deacon , Catalin Marinas , James Morse , Steven Rostedt , Ard Biesheuvel , Mark Rutland , Masahiro Yamada , Michal Marek , Ingo Molnar , Peter Zijlstra , Juri Lelli , Vincent Guittot Cc: Dave Martin , Kees Cook , Laura Abbott , Marc Zyngier , Masami Hiramatsu , Nick Desaulniers , Jann Horn , Miguel Ojeda , 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 Acked-by: Will Deacon --- 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 -- 2.26.2.303.gf8c07b1a785-goog