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 AD421C3404D for ; Wed, 19 Feb 2020 00:09:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 766CC2465D for ; Wed, 19 Feb 2020 00:09:00 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="MLtcH1Zl" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728056AbgBSAI6 (ORCPT ); Tue, 18 Feb 2020 19:08:58 -0500 Received: from mail-pf1-f201.google.com ([209.85.210.201]:33344 "EHLO mail-pf1-f201.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728025AbgBSAIy (ORCPT ); Tue, 18 Feb 2020 19:08:54 -0500 Received: by mail-pf1-f201.google.com with SMTP id c72so14293206pfc.0 for ; Tue, 18 Feb 2020 16:08:54 -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=W8ajq15Euo0CBn6HLEY8Ur3IDCmQBKzronvmXuYJ1Wc=; b=MLtcH1ZlIr7PYSYq8+bwS883i63QukomQpLx88iQ8Ty8/42rPP+4KZrwuMCM79Mm8y 817RusRnQwu/CyF2v0uzoIwvRmOV4u/0FxSEzxKKHWOhb6hWWE/OAneX5bwh66Ly2qtm YznnnRzzbN7twHBbdmKiyRvpdhaN1RrK5afuCzULkJ+VvgLPqyD5AlIoiRGARJ6zxb27 757p2uJ/BnnFVqtnpquh5ngNiJbA6U8ZEhhZeoEzcGA9JIw8t6XH0UWo5IOKMfaQpaYt /Cavrovjgq0ziUxvV0b5eM9sr9i7Vkis+NVpWAq01JCZHkKt55tZ+v/e09v1BsMjdgCt L+KA== 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=W8ajq15Euo0CBn6HLEY8Ur3IDCmQBKzronvmXuYJ1Wc=; b=Bn6CqKkLIbozXdn0zBwJLBMOY7MuCUSARo/w4I8Ux3TVmGNmo/skjiEVMkZQa+2Bq6 S9tfBSgJlthReOKCaRuREAdpnuLu65usYkJAxZlpekmJ/l95OCEZzL6XDC9zlKuE+Ii5 iAN3xuvv0wMc5hSgsxrPROJvuD5K8VzsTB6+FMgXS9nIx/68245gdSZpWfAvL9bZPmr9 NJLEJOHyojk8HSkGEHyzFNAtbRP8uAh0IXJ93s6R2w4EECPughTf9LkJmyjmPAcvCWzH mMK+aQNxTvUGKDiml14BwKyhkyuBftX/d8FSNip1EVweP7njdZjQQ+PlKavAgrM4VXkc TMRA== X-Gm-Message-State: APjAAAVktYUWYfHi4C+N+G5cy7V+ML0u6eou8NwT2I6+DL/rb05RsX0w Z3NxN4JMvpixu4o0JUd2edi8Sm8PUFO0yAp0ajI= X-Google-Smtp-Source: APXvYqxpK1u5TV7lBQJWCp5pVL1urj5uZ/qQ47DJf+mApduaTIPmMgvlpsKCisN08m+BtnDwSnTiPrPaReEndts1HUA= X-Received: by 2002:a63:d042:: with SMTP id s2mr25008924pgi.66.1582070933662; Tue, 18 Feb 2020 16:08:53 -0800 (PST) Date: Tue, 18 Feb 2020 16:08:13 -0800 In-Reply-To: <20200219000817.195049-1-samitolvanen@google.com> Message-Id: <20200219000817.195049-9-samitolvanen@google.com> Mime-Version: 1.0 References: <20191018161033.261971-1-samitolvanen@google.com> <20200219000817.195049-1-samitolvanen@google.com> X-Mailer: git-send-email 2.25.0.265.gbab2e86ba0-goog Subject: [PATCH v8 08/12] arm64: vdso: disable Shadow Call Stack From: Sami Tolvanen To: Will Deacon , Catalin Marinas , Steven Rostedt , Masami Hiramatsu , Ard Biesheuvel , Mark Rutland , james.morse@arm.com 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 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 -- 2.25.0.265.gbab2e86ba0-goog