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=-9.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,USER_AGENT_GIT 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 0E521C43387 for ; Wed, 16 Jan 2019 22:49:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D633D206C2 for ; Wed, 16 Jan 2019 22:49:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387567AbfAPWtI (ORCPT ); Wed, 16 Jan 2019 17:49:08 -0500 Received: from mga02.intel.com ([134.134.136.20]:57462 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1733300AbfAPWtI (ORCPT ); Wed, 16 Jan 2019 17:49:08 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by orsmga101.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 16 Jan 2019 14:49:08 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.56,487,1539673200"; d="scan'208";a="117288375" Received: from chang-linux-2.sc.intel.com ([10.3.52.165]) by fmsmga008.fm.intel.com with ESMTP; 16 Jan 2019 14:49:07 -0800 From: "Chang S. Bae" To: Andy Lutomirski , Thomas Gleixner , Ingo Molnar , "H . Peter Anvin" , Andi Kleen Cc: Dave Hansen , Markus T Metzger , Ravi Shankar , "Chang S . Bae" , LKML Subject: [PATCH v4 01/13] taint: Introduce a new taint flag (insecure) Date: Wed, 16 Jan 2019 14:48:37 -0800 Message-Id: <20190116224849.8617-2-chang.seok.bae@intel.com> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20190116224849.8617-1-chang.seok.bae@intel.com> References: <20190116224849.8617-1-chang.seok.bae@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org For testing (or root-only) purposes, the new flag will serve to tag the kernel taint accurately. When adding a new feature support, patches need to be incrementally applied and tested with temporal parameters. Currently, there is no flag for this usage. Suggested-by: H. Peter Anvin Signed-off-by: Chang S. Bae Cc: Andy Lutomirski Cc: Thomas Gleixner Cc: Ingo Molnar Cc: Andi Kleen Cc: Dave Hansen --- Documentation/sysctl/kernel.txt | 1 + include/linux/kernel.h | 3 ++- kernel/panic.c | 1 + 3 files changed, 4 insertions(+), 1 deletion(-) diff --git a/Documentation/sysctl/kernel.txt b/Documentation/sysctl/kernel.txt index c0527d8a468a..c4f37871d86e 100644 --- a/Documentation/sysctl/kernel.txt +++ b/Documentation/sysctl/kernel.txt @@ -1052,6 +1052,7 @@ ORed together. The letters are seen in "Tainted" line of Oops reports. 32768 (K): The kernel has been live patched. 65536 (X): Auxiliary taint, defined and used by for distros. 131072 (T): The kernel was built with the struct randomization plugin. +262144 (Z): The kernel is running in a known insecure configuration. ============================================================== diff --git a/include/linux/kernel.h b/include/linux/kernel.h index 8f0e68e250a7..dc149ff8cc52 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h @@ -599,7 +599,8 @@ extern enum system_states { #define TAINT_LIVEPATCH 15 #define TAINT_AUX 16 #define TAINT_RANDSTRUCT 17 -#define TAINT_FLAGS_COUNT 18 +#define TAINT_INSECURE 18 +#define TAINT_FLAGS_COUNT 19 struct taint_flag { char c_true; /* character printed when tainted */ diff --git a/kernel/panic.c b/kernel/panic.c index f121e6ba7e11..cb6b90538375 100644 --- a/kernel/panic.c +++ b/kernel/panic.c @@ -362,6 +362,7 @@ const struct taint_flag taint_flags[TAINT_FLAGS_COUNT] = { [ TAINT_LIVEPATCH ] = { 'K', ' ', true }, [ TAINT_AUX ] = { 'X', ' ', true }, [ TAINT_RANDSTRUCT ] = { 'T', ' ', true }, + [ TAINT_INSECURE ] = { 'Z', ' ', false }, }; /** -- 2.19.1