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=-17.4 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,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 BDE01CA9EA0 for ; Fri, 18 Oct 2019 16:11:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 978D0222CD for ; Fri, 18 Oct 2019 16:11:23 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="NSG0XzUq" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389333AbfJRQLW (ORCPT ); Fri, 18 Oct 2019 12:11:22 -0400 Received: from mail-pg1-f202.google.com ([209.85.215.202]:45760 "EHLO mail-pg1-f202.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2502568AbfJRQLU (ORCPT ); Fri, 18 Oct 2019 12:11:20 -0400 Received: by mail-pg1-f202.google.com with SMTP id v10so4587377pge.12 for ; Fri, 18 Oct 2019 09:11:18 -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=fICIDxFYsM9a9Ff5jMCA2HNdKL4X15DyG8HPfHVUdX4=; b=NSG0XzUqxk2+63gPHHlONBw5Q4nS2y744Eo1rGIDmimGan5ZvchrFconEmIXiVv79S 0SiQYCOcKQncsgO+OjD18O6E+2SSMSAk43T8F4SPII5CwYW5Z2DpjcXEvu90lABe0T7d 54pDxZVczkH9+W6UKw5BGz/1SAtjmaCTeJP9IigFW7/8iSrzVXwx+vaItOIgEL2NFpn8 PCwsy3taMFVH2Is9tZDbWuOIcT/YBmZIupi5pgO/dSJwAnrHQ+9LRhx/mZ3aQl1rS+Hn PYSAfr/54k98LWSAkxuS0/kkDyQ70rjvHFcfVRO0CwmtYXN/ED4JgjMIrSHGnZhfeFY/ nwUQ== 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=fICIDxFYsM9a9Ff5jMCA2HNdKL4X15DyG8HPfHVUdX4=; b=H5LCf2d2tljOcvrheMPApmwb9z5+XGKfhBo3Jh3Q6vyaqJwxgtAgt0gosf7idjjDm7 YYqcA2wJ1UXjUS7zlNtlNYs2tQmlCHSQ/RKZKBAJZoMnprP+MO98rh1Gf5QlgBgUsurD CTD4ErHSJsdSKrSSixBHmJZI04XAYHtlMO7WgW71Yy3RPCF5wI+7mnSnQhzbjEhCBxSN tspeoB8ErdjLQJnldxn+WUV39/toYDid309qD3tUizE3RIz+zKDLrbhcKKJqHJC++6de oB5x1ccnts3jRwbfUZceaFgFYWCdhKiODwmPYdSIt5QDngKd98YsG0eedxQ1bbeDzhVF z/hg== X-Gm-Message-State: APjAAAVq2lsazAPmtW4xP24Ep10cIiv2s6EBe9l58NFg2AOEA9CqyA/B 7zaTJg+bj8RF2cmIHxo4d7vjbvBnYmv8o44BxUU= X-Google-Smtp-Source: APXvYqy2IPmHgVzSQFLWH/l27Qtv31FYTpjwXUbB8shECHuqpnU1nIwwQdz+u4oVI6rxTnp6d2Le2ZcdmFuior/slJo= X-Received: by 2002:a65:6092:: with SMTP id t18mr11012516pgu.418.1571415077997; Fri, 18 Oct 2019 09:11:17 -0700 (PDT) Date: Fri, 18 Oct 2019 09:10:26 -0700 In-Reply-To: <20191018161033.261971-1-samitolvanen@google.com> Message-Id: <20191018161033.261971-12-samitolvanen@google.com> Mime-Version: 1.0 References: <20191018161033.261971-1-samitolvanen@google.com> X-Mailer: git-send-email 2.23.0.866.gb869b98d4c-goog Subject: [PATCH 11/18] kprobes: disable kretprobes with SCS From: Sami Tolvanen To: Will Deacon , Catalin Marinas , Steven Rostedt , Ard Biesheuvel Cc: Dave Martin , Kees Cook , Laura Abbott , Mark Rutland , Nick Desaulniers , 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 With CONFIG_KRETPROBES, function return addresses are modified to redirect control flow to kretprobe_trampoline. This is incompatible with return address protection. Signed-off-by: Sami Tolvanen --- arch/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/Kconfig b/arch/Kconfig index a222adda8130..4646e3b34925 100644 --- a/arch/Kconfig +++ b/arch/Kconfig @@ -171,7 +171,7 @@ config ARCH_USE_BUILTIN_BSWAP config KRETPROBES def_bool y - depends on KPROBES && HAVE_KRETPROBES + depends on KPROBES && HAVE_KRETPROBES && ROP_PROTECTION_NONE config USER_RETURN_NOTIFIER bool -- 2.23.0.866.gb869b98d4c-goog