From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Cyrus-Session-Id: sloti22d1t05-1427278-1518185060-5-15488190239183240306 X-Sieve: CMU Sieve 3.0 X-Spam-known-sender: no X-Spam-score: 0.0 X-Spam-hits: BAYES_00 -1.9, HEADER_FROM_DIFFERENT_DOMAINS 0.001, ME_NOAUTH 0.01, RCVD_IN_DNSWL_HI -5, T_RP_MATCHES_RCVD -0.01, LANGUAGES en, BAYES_USED global, SA_VERSION 3.4.0 X-Spam-source: IP='209.132.180.67', Host='vger.kernel.org', Country='US', FromHeader='org', MailFrom='org' X-Spam-charsets: plain='UTF-8' X-Resolved-to: greg@kroah.com X-Delivered-to: greg@kroah.com X-Mail-from: stable-owner@vger.kernel.org ARC-Seal: i=1; a=rsa-sha256; cv=none; d=messagingengine.com; s=arctest; t=1518185060; b=I8E8GNiN6JGzcOMvJ3d3va1RKvcvdNcIKUZM9GSsh4j+n9G IQKljk0dELFClMnrh3YhIMA5AnWNj9OwfLSXmhWyRCpONJgAKV72J+w863uh5FH7 dF1t6eH2w13p5MQS5cA5s6sYJVCbW/BjtB5Le+pReu/+kkQXn16EkcdWXniJSTz1 F0W4kSF2hnF1ptrrhvJV3S0m9shs9ZsWh3v/9kaqUrgQgWv04lCswOxonKyUF3Uj 94gkLd3foOTSIXLUHjG+WtxqvemECDlVCfj/BBXewjnzGvN8EIIljL4Bys6VVypo dBgE+3w8ZueRPj+hTSr62WkI9D+Z5wmKkSVHU8A== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=from:to:cc:subject:date:message-id :in-reply-to:references:mime-version:content-type:sender :list-id; s=arctest; t=1518185060; bh=JzG+M39zuOixTtvXLJbT0IiDmE OxCia++BVDWkb3s+c=; b=HutLUxKLMyiJmbedzXkz8cp0NIZYlp6UIc48QoMBmv rOjPtQNYPw62eqmQAOxaVrJW32EkPSQiv48O7JD8HOFr99uPorT2cg3nHTak5q20 u4sD7fEVsWywlIq9EGrbgsHwILh+v9wlDMc7mVWEL7KQEOm9oZCaG4oCvRxQPw+Z eF1AsNsiubPHfpo5Vnwv19dUn4A07HfQNmZLPSvupsI++ZADe1+JATjoWleGh6Fp GfMoWaYA61+a9ppQZNXPlcwqP1yQfOltlauQaDMJ7GhFOhROfhCODcfIuqiEfR1y tSlrnIl5Q4rA2YoF1iiy3xCciJPfgJmqqxvmZVkAUDWw== ARC-Authentication-Results: i=1; mx2.messagingengine.com; arc=none (no signatures found); dkim=none (no signatures found); dmarc=none (p=none,has-list-id=yes,d=none) header.from=linuxfoundation.org; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=stable-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=linuxfoundation.org header.result=pass header_is_org_domain=yes Authentication-Results: mx2.messagingengine.com; arc=none (no signatures found); dkim=none (no signatures found); dmarc=none (p=none,has-list-id=yes,d=none) header.from=linuxfoundation.org; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=stable-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=linuxfoundation.org header.result=pass header_is_org_domain=yes Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753252AbeBINnh (ORCPT ); Fri, 9 Feb 2018 08:43:37 -0500 Received: from mail.linuxfoundation.org ([140.211.169.12]:50864 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752184AbeBINng (ORCPT ); Fri, 9 Feb 2018 08:43:36 -0500 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Jiri Slaby , Dan Williams , Thomas Gleixner , linux-arch@vger.kernel.org, kernel-hardening@lists.openwall.com, torvalds@linux-foundation.org, alan@linux.intel.com, David Woodhouse Subject: [PATCH 4.9 67/92] x86/spectre: Report get_user mitigation for spectre_v1 Date: Fri, 9 Feb 2018 14:39:36 +0100 Message-Id: <20180209133936.100956467@linuxfoundation.org> X-Mailer: git-send-email 2.16.1 In-Reply-To: <20180209133931.211869118@linuxfoundation.org> References: <20180209133931.211869118@linuxfoundation.org> User-Agent: quilt/0.65 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: stable-owner@vger.kernel.org X-Mailing-List: stable@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: 4.9-stable review patch. If anyone has any objections, please let me know. ------------------ From: Dan Williams (cherry picked from commit edfbae53dab8348fca778531be9f4855d2ca0360) 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 Signed-off-by: David Woodhouse Signed-off-by: Greg Kroah-Hartman --- arch/x86/kernel/cpu/bugs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/arch/x86/kernel/cpu/bugs.c +++ b/arch/x86/kernel/cpu/bugs.c @@ -296,7 +296,7 @@ ssize_t cpu_show_spectre_v1(struct devic { 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,