From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753417AbeA3Wjj (ORCPT ); Tue, 30 Jan 2018 17:39:39 -0500 Received: from terminus.zytor.com ([65.50.211.136]:53545 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752163AbeA3Wjh (ORCPT ); Tue, 30 Jan 2018 17:39:37 -0500 Date: Tue, 30 Jan 2018 14:38:29 -0800 From: tip-bot for Dan Williams Message-ID: Cc: jslaby@suse.cz, dan.j.williams@intel.com, mingo@kernel.org, hpa@zytor.com, linux-kernel@vger.kernel.org, tglx@linutronix.de Reply-To: mingo@kernel.org, dan.j.williams@intel.com, jslaby@suse.cz, tglx@linutronix.de, linux-kernel@vger.kernel.org, hpa@zytor.com In-Reply-To: <151727420158.33451.11658324346540434635.stgit@dwillia2-desk3.amr.corp.intel.com> References: <151727420158.33451.11658324346540434635.stgit@dwillia2-desk3.amr.corp.intel.com> To: linux-tip-commits@vger.kernel.org Subject: [tip:x86/pti] x86/spectre: Report get_user mitigation for spectre_v1 Git-Commit-ID: edfbae53dab8348fca778531be9f4855d2ca0360 X-Mailer: tip-git-log-daemon Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: edfbae53dab8348fca778531be9f4855d2ca0360 Gitweb: https://git.kernel.org/tip/edfbae53dab8348fca778531be9f4855d2ca0360 Author: Dan Williams AuthorDate: Mon, 29 Jan 2018 17:03:21 -0800 Committer: Thomas Gleixner CommitDate: Tue, 30 Jan 2018 21:54:32 +0100 x86/spectre: Report get_user mitigation for spectre_v1 Reflect the presence of get_user(), __get_user(), and 'syscall' protections in sysfs. The expectation is that new and better tooling will allow the kernel to grow more usages of array_index_nospec(), for now, only claim mitigation for __user pointer de-references. Reported-by: Jiri Slaby Signed-off-by: Dan Williams Signed-off-by: Thomas Gleixner Cc: linux-arch@vger.kernel.org Cc: kernel-hardening@lists.openwall.com Cc: gregkh@linuxfoundation.org Cc: torvalds@linux-foundation.org Cc: alan@linux.intel.com Link: https://lkml.kernel.org/r/151727420158.33451.11658324346540434635.stgit@dwillia2-desk3.amr.corp.intel.com --- arch/x86/kernel/cpu/bugs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kernel/cpu/bugs.c b/arch/x86/kernel/cpu/bugs.c index 400c34e..fdb6068 100644 --- a/arch/x86/kernel/cpu/bugs.c +++ b/arch/x86/kernel/cpu/bugs.c @@ -297,7 +297,7 @@ ssize_t cpu_show_spectre_v1(struct device *dev, { if (!boot_cpu_has_bug(X86_BUG_SPECTRE_V1)) return sprintf(buf, "Not affected\n"); - return sprintf(buf, "Vulnerable\n"); + return sprintf(buf, "Mitigation: __user pointer sanitization\n"); } ssize_t cpu_show_spectre_v2(struct device *dev,