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 Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7DB4CC001B0 for ; Mon, 14 Aug 2023 23:10:24 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 0DE0590000F; Mon, 14 Aug 2023 19:10:24 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 08EFE90000B; Mon, 14 Aug 2023 19:10:24 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id DFBFD940007; Mon, 14 Aug 2023 19:10:23 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0015.hostedemail.com [216.40.44.15]) by kanga.kvack.org (Postfix) with ESMTP id CE10590000B for ; Mon, 14 Aug 2023 19:10:23 -0400 (EDT) Received: from smtpin08.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay09.hostedemail.com (Postfix) with ESMTP id 8922D80914 for ; Mon, 14 Aug 2023 23:10:23 +0000 (UTC) X-FDA: 81124255926.08.00C2990 Received: from mx0a-00069f02.pphosted.com (mx0a-00069f02.pphosted.com [205.220.165.32]) by imf13.hostedemail.com (Postfix) with ESMTP id 2714720017 for ; Mon, 14 Aug 2023 23:10:19 +0000 (UTC) Authentication-Results: imf13.hostedemail.com; dkim=pass header.d=oracle.com header.s=corp-2023-03-30 header.b=HO2RnjDw; dkim=pass header.d=oracle.onmicrosoft.com header.s=selector2-oracle-onmicrosoft-com header.b=Da7ShhpJ; arc=pass ("microsoft.com:s=arcselector9901:i=1"); spf=pass (imf13.hostedemail.com: domain of eric.devolder@oracle.com designates 205.220.165.32 as permitted sender) smtp.mailfrom=eric.devolder@oracle.com; dmarc=pass (policy=none) header.from=oracle.com ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1692054620; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=TpE1wqVtb7MplpG9Vaelj6riR98OXh5MaMtMxiY6bCg=; b=oQncDHdz7Afyl4gNX2uMkMbl5ODVMco7NgbmSLfoh0fz0XWLpwdVO4uYZSOc9jdVax8HW6 3E95NkQzRwaKaMwkpYSm+iL7LMxeGjhbJ98PECINh/1fqtM0fkiXzmDzSDFSQRuu5XkyxW GW7J/BmqHQGYytSdbUjtoeB0JEAQ9Io= ARC-Seal: i=2; s=arc-20220608; d=hostedemail.com; t=1692054620; a=rsa-sha256; cv=pass; b=44XPBnDxT/iUsbJxhIR7WTUbUlWJ6wzyMIg/sX4QUrweLEvy2uGtgYuUzO1Qj74tdbZ4X1 RjcrrSog6oDcqafTlGYj+vch2vWvpQGYjO/ZMvS654mcB7JgSjTuO8mdJeioc4DoaMfzVx EIOJupVuk3B1UVHmASBQ857C8OTlKPI= ARC-Authentication-Results: i=2; imf13.hostedemail.com; dkim=pass header.d=oracle.com header.s=corp-2023-03-30 header.b=HO2RnjDw; dkim=pass header.d=oracle.onmicrosoft.com header.s=selector2-oracle-onmicrosoft-com header.b=Da7ShhpJ; arc=pass ("microsoft.com:s=arcselector9901:i=1"); spf=pass (imf13.hostedemail.com: domain of eric.devolder@oracle.com designates 205.220.165.32 as permitted sender) smtp.mailfrom=eric.devolder@oracle.com; dmarc=pass (policy=none) header.from=oracle.com Received: from pps.filterd (m0246627.ppops.net [127.0.0.1]) by mx0b-00069f02.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 37EJOiw0031613; Mon, 14 Aug 2023 21:45:04 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : content-transfer-encoding : content-type : mime-version; s=corp-2023-03-30; bh=TpE1wqVtb7MplpG9Vaelj6riR98OXh5MaMtMxiY6bCg=; b=HO2RnjDwcRC9EdAS/kU1kKfR+Zs9bhqDJeidWFTdz7FjurdGAQ49iPv28nivq9DUhEqK sfTStGnzfOL5RYEQ/1/5fCDFn6augrPaTekrDLvEImVE3A1rQiR4pcHZkS8IYxRqMGxV GCYxxhD+G1q3nD6u4o/01ls2etVzOn26xiXmBpEkq5Zurp4fk05WdCxgvi11gW2vjZ/9 xNHfiggKXgO/xyuZNXG2tGz/z+dGZk2itJ+gxWBc0Rz4YSQFKk7cAOo8//DIcO1XB7m4 PaPOK3ACNCTuq4Zh4eEwE+BL4NYsLvlibmnWbqwxFHbqYTZNzafrrblRrDD3alMUJQGw Wg== Received: from phxpaimrmta01.imrmtpd1.prodappphxaev1.oraclevcn.com (phxpaimrmta01.appoci.oracle.com [138.1.114.2]) by mx0b-00069f02.pphosted.com (PPS) with ESMTPS id 3se3143ngq-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 14 Aug 2023 21:45:04 +0000 Received: from pps.filterd (phxpaimrmta01.imrmtpd1.prodappphxaev1.oraclevcn.com [127.0.0.1]) by phxpaimrmta01.imrmtpd1.prodappphxaev1.oraclevcn.com (8.17.1.19/8.17.1.19) with ESMTP id 37EKiNB3040317; Mon, 14 Aug 2023 21:45:03 GMT Received: from nam12-bn8-obe.outbound.protection.outlook.com (mail-bn8nam12lp2169.outbound.protection.outlook.com [104.47.55.169]) by phxpaimrmta01.imrmtpd1.prodappphxaev1.oraclevcn.com (PPS) with ESMTPS id 3sey0q6536-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 14 Aug 2023 21:45:03 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=Ddaot82ncsYJfhw7s6ob/RKizl+F6CVmeqk4y+bMHxtG1dQhIVd/xY38UO2l5Y4bjWg15tm6PMOscYebUJO+M9SR9ui7qwh5++/FacgI1NzuP7OgVLVfOtIiaLdv2hS9Kxu/ntXfcBV1rroYx07PfH9hHcI+gMWXKgwtRpEfMKx6lhwEUMyVHK3WbQkuyhFm+K5hKIGHfaS1rmVL+lFrZxgXj6ym5hqqCNEPvqsbvHIQ3G2vM9fCY2czDYeHp9rwEhizdlR2prHpHjZPULAcagbcpB8uqdY3vKEm+rZ7DEHC3tKzpSRxx0oiYpd2KYTGKjNeVBqR6pbvNjlNugONdQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=TpE1wqVtb7MplpG9Vaelj6riR98OXh5MaMtMxiY6bCg=; b=fg2ekF6Sb8qcQ8ZZgkjkC+w5xR4GThM+8C/LX5ZbynOQG4VWfS27o0t/uJ+L0gjUCQApnQ7uzwL6Sm8Le0ygUdkpO9S+ZbEaJDhFT1VwRuP7Zstk5bk4xWKUUVv4F+sv+0CiN5Q8rQLmMSw3tNhxLo4gpOI/e8zjk/6CoZnlARIBT+VOtRP+rC5jkkcUy2QlMjs7z49p4s+wsfCXhPIlKxSysEo95tT6QtvVDd/DrorSXfsjZ4QqS8UwWiNYereM2lOZVAcP8jopadQl2gc0j5TfP2Q9lKlsFrresfNktBUaKMqgAQ/IyguNfP8MWNVNvjIfRld/BF6M29+TOla0dg== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=oracle.com; dmarc=pass action=none header.from=oracle.com; dkim=pass header.d=oracle.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.onmicrosoft.com; s=selector2-oracle-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=TpE1wqVtb7MplpG9Vaelj6riR98OXh5MaMtMxiY6bCg=; b=Da7ShhpJvgoDaLiDUXcGy9aHr572KLyQyn3cq0EKnCpX78EFWm8SPXHR7oUy+ACA0VQw5fiLqeMpmYi2+oa70RdnakmE0iC7V1uLNbGNaKkmNQdb5203yFPr0rLcU6Ager3SxxM37LlB19aYjMVsJJFNHQOEqjLkRBuHbXcbwyc= Received: from CO1PR10MB4531.namprd10.prod.outlook.com (2603:10b6:303:6c::22) by DS0PR10MB6222.namprd10.prod.outlook.com (2603:10b6:8:c0::22) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6678.24; Mon, 14 Aug 2023 21:45:00 +0000 Received: from CO1PR10MB4531.namprd10.prod.outlook.com ([fe80::be4f:55e6:89c5:4f57]) by CO1PR10MB4531.namprd10.prod.outlook.com ([fe80::be4f:55e6:89c5:4f57%4]) with mapi id 15.20.6678.025; Mon, 14 Aug 2023 21:45:00 +0000 From: Eric DeVolder To: linux-kernel@vger.kernel.org, david@redhat.com, osalvador@suse.de, corbet@lwn.net, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org, bhe@redhat.com, ebiederm@xmission.com, kexec@lists.infradead.org Cc: hpa@zytor.com, gregkh@linuxfoundation.org, rafael@kernel.org, vgoyal@redhat.com, dyoung@redhat.com, lf32.dev@gmail.com, akpm@linux-foundation.org, naveen.n.rao@linux.vnet.ibm.com, zohar@linux.ibm.com, bhelgaas@google.com, vbabka@suse.cz, tiwai@suse.de, seanjc@google.com, linux@weissschuh.net, vschneid@redhat.com, linux-mm@kvack.org, linux-doc@vger.kernel.org, sourabhjain@linux.ibm.com, konrad.wilk@oracle.com, boris.ostrovsky@oracle.com, eric.devolder@oracle.com Subject: [PATCH v28 3/8] kexec: exclude elfcorehdr from the segment digest Date: Mon, 14 Aug 2023 17:44:41 -0400 Message-Id: <20230814214446.6659-4-eric.devolder@oracle.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20230814214446.6659-1-eric.devolder@oracle.com> References: <20230814214446.6659-1-eric.devolder@oracle.com> Content-Transfer-Encoding: 8bit Content-Type: text/plain X-ClientProxiedBy: SA1P222CA0145.NAMP222.PROD.OUTLOOK.COM (2603:10b6:806:3c2::29) To CO1PR10MB4531.namprd10.prod.outlook.com (2603:10b6:303:6c::22) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CO1PR10MB4531:EE_|DS0PR10MB6222:EE_ X-MS-Office365-Filtering-Correlation-Id: c69eede1-04b5-4f30-3bab-08db9d0fb5f3 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:CO1PR10MB4531.namprd10.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230028)(39860400002)(376002)(346002)(366004)(136003)(396003)(186006)(1800799006)(451199021)(83380400001)(36756003)(86362001)(41300700001)(478600001)(921005)(66946007)(66476007)(6512007)(66556008)(316002)(8676002)(5660300002)(4326008)(8936002)(38100700002)(2616005)(1076003)(107886003)(26005)(6486002)(2906002)(6666004)(7416002)(6506007)(7406005);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?P5K9dSC3EFByJ4bi0GbvO3WedbdayxhIClNeDk2kP81fHuB73wRzd0hK2Rws?= =?us-ascii?Q?gbelfBapMC9XBS6fa6TYj+uvPnAY2eYuT65PmrBbAOC/7n1dWn2BkgDGm3n3?= =?us-ascii?Q?CEiEM6Shrum/NUy4KJPlrsX0JDyJw5yJznnLjsZGcRoNul9ic8WZIpgv/5nE?= =?us-ascii?Q?LRvEmrcuBIG3N6wki1BFqQbdjWSE5aErhWvR4anKa4ZUhtTKHOw/b//chHnJ?= =?us-ascii?Q?ALUpPrK7bxisHbYnkUSyDD0NMjVr9WHHJ4kqSNYsY2/Mgz/IX+0FU2FQvJBW?= =?us-ascii?Q?7Tm/qLLMpgK/+Cgzladw7LXnomQMSvM86LY4Ax3w1sq/3k3an5sbsImCfpxo?= =?us-ascii?Q?nvOKWa9aYAQIhGMYh2Dqb5TGmrr4LobBfwYgEZ/NNGFsXszyuGXeAs6qSXgT?= =?us-ascii?Q?Y7+aLIbitZm8rZN8GWoj6/WR9/TbFTqAKmnRX1oCMGhfry7H2pv2qCRnnBfb?= =?us-ascii?Q?7MbXul7/cPkXFa2+4JwS7VKontpOV94HSiGqrMxae6b4W1HzZIPw0YWYowgX?= =?us-ascii?Q?JElOQHdKegNctx4lKkMFdovVEPLfiGEJ2BFzr7ZVS9+rDl2xNevM+6P+1WLt?= =?us-ascii?Q?fVJBRXB5rAFlX3UWSrOPDZ5Wo4KfSidspeoyL8RniBphvayLe2npvAHhjr42?= =?us-ascii?Q?v87T8MSnVFbAewgHHpxlACAVoUbR+Si2MAASmONJgsoLw3zGMdoWmda0f2Ob?= =?us-ascii?Q?0iIU1Ra5C2/uq+v5Rw2OvlevdwvbkOGDmlyaxda35jof0+AvxnNS0/SxW1HE?= =?us-ascii?Q?VYpWtye8yK4z2cMfO0ALZxR6Kgh35LC43iqEjWzIBbpbzY7cN/RBOKNPs4uy?= =?us-ascii?Q?6hscOw+vj5n/u4GYREDZU57zjVQacr/tgNqnoORmn00jK6M7TR50tU2mkDXx?= =?us-ascii?Q?RM3GGXlarlNunI3AWYDCHVM8yiKYB8ILcgWrxP1hBnx55Hjk9fIaTlTe+Wnc?= =?us-ascii?Q?moVrb02bAlVVQl+qQlnjJXNDwA4fYTv+Ty7Q4ZwFTuNlP4F/QP8dMH84mdfn?= =?us-ascii?Q?SdsOAzofY+p5GGmFl5axNIcEwOo/hByLZTtce0YvdA08shNcNdvEG0tb/NJ8?= =?us-ascii?Q?fWcOXOzklclxI7wNnrzqU4Emy4zUx4s/LuFFZ56CswSqdE4Q/koAUZYrcOYA?= =?us-ascii?Q?UDEkosNdnfHS3lQywITzgnC7HykTVtXYlfqg2PLgC1XaKZjlA79KbdmUVM1S?= =?us-ascii?Q?5tWQciOGb+ITehT2eDZFsBzLzq68cr6xA0e36FXkLYzkWoPR/vGBTwczFeg2?= =?us-ascii?Q?UOZodr+ZErbjZ+QCrp4wPfm+ocnMQHyKXeYwfVf3a8phLhNmjaoEu+7iusG9?= =?us-ascii?Q?Fp//HNPHBYl2V3nFvnADwjMyUPvoh1TfCUJviSqM+xRFAOArYqJidInX6m98?= =?us-ascii?Q?rkpTQis+tOnZ3+SAMB6tVlR3mbCFKfDAC5JZEuEOyYvbGVzI90+UmyaEJmEF?= =?us-ascii?Q?4cCJg2BBkcC5aPjEbQqlbc7xNud8AGDszn1vzrWXSBU+qW4Kfb2QuThSBGdq?= =?us-ascii?Q?mLhtGsPWxE2isgHXitIaUQsvsl5mC6xCsZL8aqBizKfNiR28x4EwXeB3jvup?= =?us-ascii?Q?+Ne/tmP8SQ81jUgkRtL+hsULltIGzOqycEtSh/ni8AyfCH/05Cypv5+g0E7q?= =?us-ascii?Q?3w=3D=3D?= X-MS-Exchange-AntiSpam-ExternalHop-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-ExternalHop-MessageData-0: =?us-ascii?Q?/PJgpgYF70evujJHaReFHSRMjqPX0blQrFVu2/uBZ6jb1SGrg0yxzRkehKaR?= =?us-ascii?Q?liy9qVHqozSezAQHWFlH5aKQOfMBAr1NNji4BUHxdZWmuJcppuBLQ5qWp8JJ?= =?us-ascii?Q?h52ovfDAxSVdQGhW9vkLoOKx+rrC3rUZIXhQ23HVOpixLjkVAxQGi1s3OBxa?= =?us-ascii?Q?6WBry7nAMke1wE+R3H/oX/kk5gjNxW5MKxueHimNu5orgWDt4g27IysiZYq6?= =?us-ascii?Q?jgidCGCzXLW0t8NcOSkvX8cgvv5bO8+ZOHv1H/AMCXS8AjOLFCIFGY+4n05d?= =?us-ascii?Q?lQsgUbm22yZt70rpANW9tTL4SpPJu8YOvq/qXe9MyloQIcirHhtFVxj/Zoq6?= =?us-ascii?Q?AUcfgyW2KxGIrl3OjDS3Qz2VxtpEBzDZ32L1lpXk7wztefeSHDt3/dXZ9l4H?= =?us-ascii?Q?E9Z+BfaOF9FPNZ923fKaVGyU2eaYxZWaXh6/mUfVuvjnUHr7ZZEi3g24skoZ?= =?us-ascii?Q?/o82j7DWV+FMtlx7ZIg09jRcJi4//LzXXB05Eg7Gtu8PgIFsRHcUbiJKIPo+?= =?us-ascii?Q?iJG4mbV1t65RIT3OkybDMVr7hm2MJF7vRLbVOo5NZVinWfyChCHZHxSoJOa1?= =?us-ascii?Q?7Bj6jGzXtnaUvo8SuxubYrFwP5pR+dDVFoDcgHatnDGzBRB7PrTJ8oEwiTlI?= =?us-ascii?Q?QEcl9TtPcwRJkJHyWoEE8Uy9DxXBputIp278GB2qC3f1cg+/mOn0Crf13du5?= =?us-ascii?Q?tMjpNv7pJ4D+Y89+AJIZXCJ6e3jz/Yq/cYkU6br1hKt8X4ccsSxM3gA1XvGW?= =?us-ascii?Q?aLJTded2zqARiDfwguYdta6C87r6/HM0Ig5YrKptMBG/LJEJn4Muxx76swB4?= =?us-ascii?Q?7x9EHhgyOu483IjgI+6LrUKONJ8FUpCOys08elbDA347PouIbeqs7PMA/Kdn?= =?us-ascii?Q?iKAYmqydDmBjbHrIbCBh8M0nb+ELey/IUmchNHHY7mOb5scSsH/KB8K2Wi7d?= =?us-ascii?Q?WFbWQLQ43XvWLyL90dl6VdVSe7koOuFG5OYSiFb4xvhpNLP8M+tbMSehaExr?= =?us-ascii?Q?RUbWqyzTpN0XgJFnA9bpyct4nuemHsU/fJ8yYiqTfn3o/9EmIwQAp0TJ0Ali?= =?us-ascii?Q?sXUQ7wCQMR53Joptp1XM3nsmp0SB/sh6jB0E318BV8In4XaPx2ggK4Wm90dV?= =?us-ascii?Q?CyyQbvnhb+Bs7XQzMTy/lDUtw2pW8gJPZ/s8iU7Tpbzob0FE4tHxcgvXmvp3?= =?us-ascii?Q?mAnnultUyC7a+FoNM8ouc1+5pfTxfY3oWJ0yp8iuXCHRkadvXL4n2h84oziD?= =?us-ascii?Q?9JUkmEFZPwGUgYneabRSyN9cD1/2tVMyH6UvqKmSwnc9Kmee7+EzzGCEwNne?= =?us-ascii?Q?2TFRpbyLol7HJ8geRcFanebF+ETClV6iIE8uvAkwiQWJZlPsygwnP6OnRQO6?= =?us-ascii?Q?iFaH4jJrVN8dxSpMqFNNK6BPOz/NvaeEKA56VPzg/31dA3AePQvQkCrAMPvs?= =?us-ascii?Q?yURrwAvRSC8=3D?= X-OriginatorOrg: oracle.com X-MS-Exchange-CrossTenant-Network-Message-Id: c69eede1-04b5-4f30-3bab-08db9d0fb5f3 X-MS-Exchange-CrossTenant-AuthSource: CO1PR10MB4531.namprd10.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 14 Aug 2023 21:45:00.7999 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 4e2c6054-71cb-48f1-bd6c-3a9705aca71b X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: UTKtRXIVQOdzP2hG2nhdPrctb/bXeZKPrDaQamzXqhoyWDSZ0pQDidMH71wY2NF8Klf6109flQ9xMiXRXGi4rOTcfp4MD5EkwLptj23T2dg= X-MS-Exchange-Transport-CrossTenantHeadersStamped: DS0PR10MB6222 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.267,Aquarius:18.0.957,Hydra:6.0.591,FMLib:17.11.176.26 definitions=2023-08-14_18,2023-08-10_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 bulkscore=0 phishscore=0 mlxscore=0 spamscore=0 malwarescore=0 mlxlogscore=999 suspectscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2306200000 definitions=main-2308140200 X-Proofpoint-GUID: lMgr5zqy65Tc4T-BVvkRljFWKao4CnJS X-Proofpoint-ORIG-GUID: lMgr5zqy65Tc4T-BVvkRljFWKao4CnJS X-Stat-Signature: 1kamsq7aesjwoosw5ysnbehjztuyboru X-Rspamd-Server: rspam10 X-Rspamd-Queue-Id: 2714720017 X-Rspam-User: X-HE-Tag: 1692054619-1905 X-HE-Meta: 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 O9gLEO88 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: When a crash kernel is loaded via the kexec_file_load() syscall, the kernel places the various segments (ie crash kernel, crash initrd, boot_params, elfcorehdr, purgatory, etc) in memory. For those architectures that utilize purgatory, a hash digest of the segments is calculated for integrity checking. The digest is embedded into the purgatory image prior to placing in memory. Updates to the elfcorehdr in response to CPU and memory changes would cause the purgatory integrity checking to fail (at crash time, and no vmcore created). Therefore, the elfcorehdr segment is explicitly excluded from the purgatory digest, enabling updates to the elfcorehdr while also avoiding the need to recompute the hash digest and reload purgatory. Suggested-by: Baoquan He Signed-off-by: Eric DeVolder Reviewed-by: Sourabh Jain Acked-by: Hari Bathini Acked-by: Baoquan He --- kernel/kexec_file.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/kernel/kexec_file.c b/kernel/kexec_file.c index 453b7a513540..e2ec9d7b9a1f 100644 --- a/kernel/kexec_file.c +++ b/kernel/kexec_file.c @@ -726,6 +726,12 @@ static int kexec_calculate_store_digests(struct kimage *image) for (j = i = 0; i < image->nr_segments; i++) { struct kexec_segment *ksegment; +#ifdef CONFIG_CRASH_HOTPLUG + /* Exclude elfcorehdr segment to allow future changes via hotplug */ + if (j == image->elfcorehdr_index) + continue; +#endif + ksegment = &image->segment[i]; /* * Skip purgatory as it will be modified once we put digest -- 2.31.1