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=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED 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 056B4C0044C for ; Wed, 31 Oct 2018 11:02:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id CD6B920838 for ; Wed, 31 Oct 2018 11:02:10 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CD6B920838 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linux.ee Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728281AbeJaT7o (ORCPT ); Wed, 31 Oct 2018 15:59:44 -0400 Received: from mx2.cyber.ee ([193.40.6.72]:41917 "EHLO mx2.cyber.ee" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727617AbeJaT7o (ORCPT ); Wed, 31 Oct 2018 15:59:44 -0400 To: LKML From: Meelis Roos Subject: insecure W+X mappings on HP DL365 G5 Message-ID: Date: Wed, 31 Oct 2018 13:02:06 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.2.1 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: et-EE Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This HP DL365 G5 is the second old server where I see massive W+X mapped pages. Is it some BIOS defect? [ 0.714956] x86/mm: Found insecure W+X mapping at address 0xffff8ed980000000 [ 0.715101] WARNING: CPU: 0 PID: 1 at arch/x86/mm/dump_pagetables.c:266 note_page+0x4c7/0x780 [ 0.715298] Modules linked in: [ 0.715421] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.19.0-11807-g310c7585e830 #9 [ 0.715612] Hardware name: HP ProLiant DL365 G5 , BIOS A10 05/02/2011 [ 0.715741] RIP: 0010:note_page+0x4c7/0x780 [ 0.715864] Code: fd 01 0f 87 1a 09 00 00 41 83 e5 01 0f 85 3f fc ff ff 49 8b 74 24 18 48 c7 c7 20 72 f2 bc c6 05 13 7f e9 00 01 e8 8a bf 00 00 <0f> 0b e9 20 fc ff ff 45 84 ed 0f 85 2b 08 00 00 4d 85 ff 0f 85 91 [ 0.716141] RSP: 0018:ffffb262c0c5be10 EFLAGS: 00010282 [ 0.716265] RAX: 0000000000000000 RBX: 0000000000000161 RCX: ffffffffbd06b778 [ 0.716393] RDX: 0000000000000001 RSI: 0000000000000082 RDI: ffffffffbd4a972c [ 0.716511] RBP: 0000000000000000 R08: 00000000000002bb R09: 00000000bd4eb701 [ 0.716638] R10: ffff8ed9800bc240 R11: 0000000000032084 R12: ffffb262c0c5bec0 [ 0.716775] R13: 0000000000000000 R14: 0000000000000002 R15: 0000000000000000 [ 0.716903] FS: 0000000000000000(0000) GS:ffff8edaaba00000(0000) knlGS:0000000000000000 [ 0.717085] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 0.717208] CR2: ffffb262c0e24000 CR3: 000000009e60a000 CR4: 00000000000006f0 [ 0.717343] Call Trace: [ 0.717470] ? vprintk_emit+0x18a/0x1e0 [ 0.717592] ptdump_walk_pgd_level_core+0x352/0x410 [ 0.717720] ? rest_init+0x1/0xcc [ 0.717839] kernel_init+0x39/0x114 [ 0.717960] ? rest_init+0xcc/0xcc [ 0.718085] ret_from_fork+0x22/0x40 [ 0.718207] ---[ end trace 34c16f2bb7a914e2 ]--- [ 0.744838] x86/mm: Checked W+X mappings: FAILED, 2182367 W+X pages found. -- Meelis Roos