From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Cyrus-Session-Id: sloti22d1t05-1340521-1526937469-2-2309018944248101736 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 0.248, MAILING_LIST_MULTI -1, RCVD_IN_DNSWL_HI -5, LANGUAGES enfrro, 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=fm2; t= 1526937468; b=QkqONPI/6IrrdcO9Q4BeJZdC8kYrnIy1Ek4uXgdAV0IX+e5lmw tb2VVfKSyft8HC0E5+NemevNCsKnjQmeFPqRe8ctURbkNWTmFa5FiPtAJ3iY9DRD gWfUTgmeYZe3cm+GgeXIHGX9Ifkh3aY4s5KvOr9q61vLmSPc+smGEhO+uzXL3Uck 54mrgM9I22Rrdr607NSYFHEXC73u8CmhIZYOeNKScu6hwMOe9OI5jFIkQ/oeECjW V1R3yUKriss2NTK1xQoWvJ71bKW5EBY1VsbsifpmFt0j+jh0OQGignq53qPCeDW7 7XygIgHLwri7I3v1ANbvwYSxFMOPtUTrOlZA== 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=fm2; t=1526937468; bh=/hEJwz0EQNb4jTAkJzX3jKlU5FUjMB 58mnsAsnWY1b4=; b=PUl6XXrkiqv6AOvG5pSwq8DTyWpYxws5U1Nnabu9SjTW/h 8G0yAvo3iDpl2K+yQ5hpMRSxbS1cj/6mrJj0B5iSI8a1ATciLJyVLvgXZAE9/GVO /Jd25t8CY+MW7eJ0saf6Vz8Gb1swQwxC0Il/CX7J3Z5tes1CEPMqVzTlXfrZhedF OXYIJ8bV1chsmPwAL2f/AI6TRy+UUTUJJyQA+Yb4xdWCMzakT45/jbVPJ3e76fVM 9l98KZcPYLYM8YfIZ9NHeszoBrCgc8pVP6yN6FGw2dDpD0rSxTzgj7liczmj4E6L aqbXEILmi1h7eiJ+saz66s/gUAE15Eg3TjJ3+9lQ== ARC-Authentication-Results: i=1; mx1.messagingengine.com; arc=none (no signatures found); dkim=pass (1024-bit rsa key sha256) header.d=kernel.org header.i=@kernel.org header.b=PLt4L7Zm x-bits=1024 x-keytype=rsa x-algorithm=sha256 x-selector=default; 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-cm=none score=0; 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; x-vs=clean score=-100 state=0 Authentication-Results: mx1.messagingengine.com; arc=none (no signatures found); dkim=pass (1024-bit rsa key sha256) header.d=kernel.org header.i=@kernel.org header.b=PLt4L7Zm x-bits=1024 x-keytype=rsa x-algorithm=sha256 x-selector=default; 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-cm=none score=0; 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; x-vs=clean score=-100 state=0 X-ME-VSCategory: clean X-CM-Envelope: MS4wfI5CcGyazsgG0IIGUm477lXi+4ciFrpIdre5fryjJ62lUBCir3BHaU9F23Iog8v2dxNWHzFAdDaQuhwY4CC63HI/0XhBq6TDIGJ8Tugz7OCFjhDCys8h ayCRwhMZhk6Lxl4CKVU6KofjdGL8qG/oooYpuwa6fAwmwtwHW9H7lFyWqo3SvheOs5RAwAY+Maj2Vc/ICLDCKUF02hZnnUtQn5oNRfyC9IFQcVkFJio7UO6K X-CM-Analysis: v=2.3 cv=WaUilXpX c=1 sm=1 tr=0 a=UK1r566ZdBxH71SXbqIOeA==:117 a=UK1r566ZdBxH71SXbqIOeA==:17 a=IkcTkHD0fZMA:10 a=VUJBJC2UJ8kA:10 a=cm27Pg_UAAAA:8 a=pBOR-ozoAAAA:8 a=ag1SF4gXAAAA:8 a=k5_1euZgLRBG61PYFQoA:9 a=QEXdDO2ut3YA:10 a=xmb-EsYY8bH0VWELuYED:22 a=Yupwre4RP9_Eg_Bd0iYG:22 X-ME-CMScore: 0 X-ME-CMCategory: none Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753314AbeEUVRn (ORCPT ); Mon, 21 May 2018 17:17:43 -0400 Received: from mail.kernel.org ([198.145.29.99]:32812 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752771AbeEUVRj (ORCPT ); Mon, 21 May 2018 17:17:39 -0400 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Kees Cook , Thomas Gleixner , David Woodhouse Subject: [PATCH 4.9 56/87] proc: Provide details on speculation flaw mitigations Date: Mon, 21 May 2018 23:11:32 +0200 Message-Id: <20180521210425.274266119@linuxfoundation.org> X-Mailer: git-send-email 2.17.0 In-Reply-To: <20180521210420.222671977@linuxfoundation.org> References: <20180521210420.222671977@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review 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: Kees Cook commit fae1fa0fc6cca8beee3ab8ed71d54f9a78fa3f64 upstream As done with seccomp and no_new_privs, also show speculation flaw mitigation state in /proc/$pid/status. Signed-off-by: Kees Cook Signed-off-by: Thomas Gleixner Signed-off-by: David Woodhouse Signed-off-by: Greg Kroah-Hartman --- fs/proc/array.c | 24 +++++++++++++++++++++++- 1 file changed, 23 insertions(+), 1 deletion(-) --- a/fs/proc/array.c +++ b/fs/proc/array.c @@ -80,6 +80,7 @@ #include #include #include +#include #include #include #include @@ -345,8 +346,29 @@ static inline void task_seccomp(struct s { #ifdef CONFIG_SECCOMP seq_put_decimal_ull(m, "Seccomp:\t", p->seccomp.mode); - seq_putc(m, '\n'); #endif + seq_printf(m, "\nSpeculation Store Bypass:\t"); + switch (arch_prctl_spec_ctrl_get(p, PR_SPEC_STORE_BYPASS)) { + case -EINVAL: + seq_printf(m, "unknown"); + break; + case PR_SPEC_NOT_AFFECTED: + seq_printf(m, "not vulnerable"); + break; + case PR_SPEC_PRCTL | PR_SPEC_DISABLE: + seq_printf(m, "thread mitigated"); + break; + case PR_SPEC_PRCTL | PR_SPEC_ENABLE: + seq_printf(m, "thread vulnerable"); + break; + case PR_SPEC_DISABLE: + seq_printf(m, "globally mitigated"); + break; + default: + seq_printf(m, "vulnerable"); + break; + } + seq_putc(m, '\n'); } static inline void task_context_switch_counts(struct seq_file *m,