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 95458C35E04 for ; Tue, 25 Feb 2020 17:40:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6EFCC2082F for ; Tue, 25 Feb 2020 17:40:35 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="Xi2ZbcU5" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731201AbgBYRkP (ORCPT ); Tue, 25 Feb 2020 12:40:15 -0500 Received: from mail-pl1-f202.google.com ([209.85.214.202]:41086 "EHLO mail-pl1-f202.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731080AbgBYRkJ (ORCPT ); Tue, 25 Feb 2020 12:40:09 -0500 Received: by mail-pl1-f202.google.com with SMTP id p19so7891955plr.8 for ; Tue, 25 Feb 2020 09:40:09 -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=Xi2ZbcU5w4xAMDBbk+3G0M7WhFEvev3QQQmayIYq12lXrXU0TZY00WT8V3tl6EBeFs 4YY+WNru1RHx9Rtv7WI7GU9OFbC0kpv1arYQcLbeOtalBIzT9bzfvmjebvYpIQYGN0iz ohwXof/jSEC3zwPA+NUbVqZJ7ozto76pl8Tl3GYn7Wj0oBFcPxmvhAMiLDwhWBcd/dtK oQCsutUGRHGUPUXm6ZqfV5QbrWXnb7sD4ecMMfiyZisuKFBUhFGQatODjW3Cdm3VhZZA ET4mX4w5o/xHxsjJresFyuImLMlTwnQvGNeTqx3ZIqe9K0l8H2+6zMTkYnV/LRZbxSrS sfyQ== 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=c0x1EwHzYRFWFJMHVwtojG7Kv7HUL1OhuYL+W9jEYf21ocuup9Lm4x3bBgsU/L7ltJ RADGJbVjYm0/B+gjQvVL2EM0Fe3eBMkLTH+oI2Gzrqq298EpjujQ8yJubyFF2SEAVk3a baOIOovoE8xAtWC9Xh5Vy2/MDCK8AylstybKbwgkJ/Ob853XQiS49VtiKeurN7MQdoH8 qi2WwgIDT1BgBiBi98MHJsiJAcl83nQgJ5BC79Z6v5fUarAX6ZTV1tJzfiZid/8P/Lv3 wgL0UjqY5J7ZuRQ7qJWF7gdhJhT5LEaYDCz25L8aZGUXFo7MQkFAOLyi6l4+95hdeVFN DVhw== X-Gm-Message-State: APjAAAWW5nyNZlwkAI9/REL7ptcM4RZF6tBZEYNKCLGfavxYuq25bWwk D+ch28mLN5RKTpl0hBru4ADvNZSJf4xPP2PJ1NQ= X-Google-Smtp-Source: APXvYqwvqENHxbX/ovgpjf0ZVx0mLlUs8H8QzWYeq0EOjlcVEkkcC9/C+tlcnWHubokdElLT2kLplCW3jEbNjcX6X1w= X-Received: by 2002:a63:3207:: with SMTP id y7mr3943460pgy.344.1582652409047; Tue, 25 Feb 2020 09:40:09 -0800 (PST) Date: Tue, 25 Feb 2020 09:39:29 -0800 In-Reply-To: <20200225173933.74818-1-samitolvanen@google.com> Message-Id: <20200225173933.74818-9-samitolvanen@google.com> Mime-Version: 1.0 References: <20191018161033.261971-1-samitolvanen@google.com> <20200225173933.74818-1-samitolvanen@google.com> X-Mailer: git-send-email 2.25.0.265.gbab2e86ba0-goog Subject: [PATCH v9 08/12] arm64: vdso: disable Shadow Call Stack From: Sami Tolvanen To: Will Deacon , Catalin Marinas , James Morse , 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 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