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 BD06DE77197 for ; Tue, 7 Jan 2025 10:15:38 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 4DAF96B009E; Tue, 7 Jan 2025 05:15:38 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 45FF16B00A4; Tue, 7 Jan 2025 05:15:38 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 23F826B00C4; Tue, 7 Jan 2025 05:15:38 -0500 (EST) 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 E28C56B009E for ; Tue, 7 Jan 2025 05:15:37 -0500 (EST) Received: from smtpin14.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay10.hostedemail.com (Postfix) with ESMTP id 82BF8C0869 for ; Tue, 7 Jan 2025 10:15:37 +0000 (UTC) X-FDA: 82980249114.14.7F8DA4E Received: from mx0b-00069f02.pphosted.com (mx0b-00069f02.pphosted.com [205.220.177.32]) by imf27.hostedemail.com (Postfix) with ESMTP id 25A744000A for ; Tue, 7 Jan 2025 10:15:34 +0000 (UTC) Authentication-Results: imf27.hostedemail.com; dkim=pass header.d=oracle.com header.s=corp-2023-11-20 header.b=i36ZfJrx; dkim=pass header.d=oracle.onmicrosoft.com header.s=selector2-oracle-onmicrosoft-com header.b=EuKkWKfy; spf=pass (imf27.hostedemail.com: domain of lorenzo.stoakes@oracle.com designates 205.220.177.32 as permitted sender) smtp.mailfrom=lorenzo.stoakes@oracle.com; arc=pass ("microsoft.com:s=arcselector10001:i=1"); dmarc=pass (policy=reject) header.from=oracle.com ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1736244934; 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=Ci3N0dq3MBwVSxdgwagTFKGaiXO7Z5/GxV9LRnyr+3g=; b=6A6V4FEEcaz34Xos9Et5xrKyTjn4mvSUcvwyrXOHfwmrkajRKtjBxmU6wXYuUmhzTz/v9s oh8QW2sFwqqu/TTUAOF8vlRxt76ZkHSyBG2Xv7tB+cDqRoEsZUpJ+0IDV6QpJ3SXpPp/P3 FtPVj88oreE6iKKiE/ZaL07ysCDcGWw= ARC-Authentication-Results: i=2; imf27.hostedemail.com; dkim=pass header.d=oracle.com header.s=corp-2023-11-20 header.b=i36ZfJrx; dkim=pass header.d=oracle.onmicrosoft.com header.s=selector2-oracle-onmicrosoft-com header.b=EuKkWKfy; spf=pass (imf27.hostedemail.com: domain of lorenzo.stoakes@oracle.com designates 205.220.177.32 as permitted sender) smtp.mailfrom=lorenzo.stoakes@oracle.com; arc=pass ("microsoft.com:s=arcselector10001:i=1"); dmarc=pass (policy=reject) header.from=oracle.com ARC-Seal: i=2; s=arc-20220608; d=hostedemail.com; t=1736244934; a=rsa-sha256; cv=pass; b=2lFXLtRC3f8HPfHqvYa4AN91uXmoweQSjXMvZPTtZvDPZXvScqXS9eAF0jM7lGviBNA3fE nXvc2t9fNiourbMWYDvCzsIDex8hd2L4JgxOMNORqiRA0LUL+Ti009CSU8v4xEWGXA/SF7 Q5q+9AnTD6VKKx8OMu/if1JmDiHNtKQ= Received: from pps.filterd (m0246630.ppops.net [127.0.0.1]) by mx0b-00069f02.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 5072tpEV000984; Tue, 7 Jan 2025 10:15:31 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=cc :content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s= corp-2023-11-20; bh=Ci3N0dq3MBwVSxdgwagTFKGaiXO7Z5/GxV9LRnyr+3g=; b= i36ZfJrxeK3nsyDeBUBvFUI3EhAS92BvMmRFZ01+nbm+eIf0V6tSaRU4RZJ1ACJ9 0jg3StYojjwIImk7gjTqjM+mg19/xI068BNWQ4n70XKXRl7oinhjdV/RlETPsEFc /sNK3eOiCbCChV7n2UxR+WnG/QY/v3oEZx37Pr7erwnQ11jr/zbBLiOqW+vD+0f8 NFYaIEqNaG2kSB08bj0LHkMGKuVq86TGbjF9+tCcbjxx3+Rb2jidsiBi4UMDRRcK Ag3T62w4+2dFNV/nVQoV0HkSXyyYeU2GEXv2awQwDEjGJSkBftRVE8sgg9T1YGGK 10oybIVHlZNIRKO+tv50DQ== Received: from iadpaimrmta02.imrmtpd1.prodappiadaev1.oraclevcn.com (iadpaimrmta02.appoci.oracle.com [147.154.18.20]) by mx0b-00069f02.pphosted.com (PPS) with ESMTPS id 43xudc4fw6-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 07 Jan 2025 10:15:31 +0000 (GMT) Received: from pps.filterd (iadpaimrmta02.imrmtpd1.prodappiadaev1.oraclevcn.com [127.0.0.1]) by iadpaimrmta02.imrmtpd1.prodappiadaev1.oraclevcn.com (8.18.1.2/8.18.1.2) with ESMTP id 50780peL019902; Tue, 7 Jan 2025 10:15:30 GMT Received: from nam11-co1-obe.outbound.protection.outlook.com (mail-co1nam11lp2173.outbound.protection.outlook.com [104.47.56.173]) by iadpaimrmta02.imrmtpd1.prodappiadaev1.oraclevcn.com (PPS) with ESMTPS id 43xueem9f3-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 07 Jan 2025 10:15:30 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=fayTRm1p2Lp9AkU5/Ap4Tylv9YO04yiIk+KecjJjfTe62+hpSlXLyVba1z846tleI7bP+7YBWx/m16qIYDgPMHQAnc7dxdRGRkS7geCkneY/xMZFamIPPF4BsdOgZrVHmQjQv5I5t2x5fjBEsZKxOMO4Akqc5sOZCUVvhvu2Ey3AbsoIs3VpyY6+C2+fblokFhkPYnded3F4M+OzNNas0Jq7nVZEFYwdJM2z3R18MNphsY/BTvAJ4zIX+wJ2CFYmg2fdqZuZ66V8YxvyHCYFpYkBy6p9Vpv6P7Kvi6IPuoT2Jzk7mxT7NP364nQTie1KAz6qDCmyMOY9Jh9y++Eqmw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; 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=Ci3N0dq3MBwVSxdgwagTFKGaiXO7Z5/GxV9LRnyr+3g=; b=xX+sjQDWVUw/w9JQ4+gopwi4GdelCsD9TCEB/LOrAcaV1QCCU2ER/IAU1wUg5qYvkrxXKrYpqmJB6LyrBM4eWH3cPk2yjvN/7Fd2U/YvX8XE+EC26ebrOCGl31QhIzjtPlgS/OjCnD7Jv9VtEQsRUoTt+piWVk6VUGhvkQPjZmPjO7y1fjoxkU4yiJhdmTUwrvGQFbPIRjrcdl5IFPMw7WmNNKKKM1SiFWNGCYHlgu/pv+TeuQfjg+pTMLKriLkmCxVEMytwkaGC67J4EdF+X/QqbydY5Nkkkzs5FanY5CX+oQIovBtRPkHzqdAGk7C7PJMkDZqhalF6AFAMPHeLAw== 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=Ci3N0dq3MBwVSxdgwagTFKGaiXO7Z5/GxV9LRnyr+3g=; b=EuKkWKfyVzdpU1Ee/rgEmN7t/t02KAFJmAgsiiqFAR54qY5X9jKlKZF5ZNy5S6JfMgFB3E2I6DL55hRRYWSehYBTsCSr7jWfbZzwHMgFbAuX+NeVzoHGkmqHZ72qQ7pnFRPV3VpwtWdwQxX+U6mMuVgCMUG9Fhhsgstphpt3S/4= Received: from BYAPR10MB3366.namprd10.prod.outlook.com (2603:10b6:a03:14f::25) by IA1PR10MB7215.namprd10.prod.outlook.com (2603:10b6:208:3f9::6) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8335.10; Tue, 7 Jan 2025 10:15:27 +0000 Received: from BYAPR10MB3366.namprd10.prod.outlook.com ([fe80::baf2:dff1:d471:1c9]) by BYAPR10MB3366.namprd10.prod.outlook.com ([fe80::baf2:dff1:d471:1c9%4]) with mapi id 15.20.8314.015; Tue, 7 Jan 2025 10:15:27 +0000 Date: Tue, 7 Jan 2025 10:15:23 +0000 From: Lorenzo Stoakes To: Dmitry Vyukov Cc: Aleksandr Nogikh , syzbot , Liam.Howlett@oracle.com, akpm@linux-foundation.org, jannh@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, syzkaller-bugs@googlegroups.com, vbabka@suse.cz Subject: Re: [syzbot] [mm?] WARNING in vma_merge_existing_range Message-ID: <3b9b3626-0368-4381-ad01-e2c8fc9b873a@lucifer.local> References: <6774c98f.050a0220.25abdd.0991.GAE@google.com> <11dee0ef-1707-4b90-be2e-56f484642a7a@lucifer.local> Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: X-ClientProxiedBy: LNXP265CA0030.GBRP265.PROD.OUTLOOK.COM (2603:10a6:600:5c::18) To BYAPR10MB3366.namprd10.prod.outlook.com (2603:10b6:a03:14f::25) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BYAPR10MB3366:EE_|IA1PR10MB7215:EE_ X-MS-Office365-Filtering-Correlation-Id: 12fcb672-a047-46fc-15a3-08dd2f043501 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|366016|1800799024; X-Microsoft-Antispam-Message-Info: =?utf-8?B?SzQ4Nng0VTNubE4rdGJCNzJWRGlMQnQyZDdINk4vZUFKd2Y0dGFMWE56RHQx?= =?utf-8?B?cE10dVlyQ09PYzhNeiszRFhGb2txQUExbHVwa1lKZFh0TTVTdGMvdGg3bDFw?= =?utf-8?B?L3EyUTVHV2pVT05DVmNyWlVCc1pHRTBaVVVsbWs0bWRaVktaVjBraHB4NWxR?= =?utf-8?B?a2JHS0NnRGVIU3FKUldHL25LanB2ZnN3OURaRkFsV1VsMUQwRTcwb1BRbGRF?= =?utf-8?B?Y0Rsbll2OCtseG9iWDBQTS80RUxObThpV2M5dXpiaUVFa1VzcWNRNCtHZ1NW?= =?utf-8?B?am1YZTZvdi9kY0Q1ZGl3c3dlRkhSL1JlMCt2KzhxRXFJcEhlZ3hrcTlGeExB?= =?utf-8?B?c09UN1dvWm9MRDN2TEd4azEzOWo2Qmx1aHcvRzNBd2diUXNRc2ZrYU0zdHJl?= =?utf-8?B?U0liQjB3c3FsSDNWV2pXQmJaSFJyOTNNVzYvZm5tL0VwbFNIcXFQL0N4UVBQ?= =?utf-8?B?aTBsT2JWenRtdGl2dUJnaDBsYXlxeEFaTHEyQkd6dkVVMURVUWJlbWE4cFFM?= =?utf-8?B?MU55WjNzQ05ZTU5mNGJkaHp0ek85V2J6MEluUm9IRXU5Mk9TS0E2Y0E4NE9N?= =?utf-8?B?bHQrNTdQSmtveEpYbXQzNXJTU0dsNEFjRzFISU9TMk5Oc1Jvc3NTLzVMeXhL?= =?utf-8?B?cmpVNERDbXZJQ3NxcHk1MUhOcGpad2FISndHUW1HMEVrTldkZUJsRTdvVjU3?= =?utf-8?B?T0lDRVFrTVNUS25mZGRONFhxVmRIL0xWOWNqeXdaVTNTamsyN2tnZGh6QkpR?= =?utf-8?B?N0w3ZFZucEgwQWlDTndMZ2dQcEpTaWZuNjU2OU5DWjV4NHV4MnJ4K0VZYTZu?= =?utf-8?B?VHFzR0w5V3ZaZEN6b05UcU1GT2w4ei95NTNrdXdYZjE5R0RGK2NzUC9Gc3M1?= =?utf-8?B?NmUwckQvalZkY25WK2t1N2diUFVsWGpKUmgzbzNqUStXRWlHNHNDeXVyOHBx?= =?utf-8?B?OWd4SXR6U002VVFOTjNKWThJOWVhUW1Va01YUVFiNWl6TGV2Q1JPd052d3ds?= =?utf-8?B?dzFZbHRJY2ZpUmN5bjJwcVVCb2pjMUdkekc1ZWVZclRwelk5cFpua3BLeCth?= =?utf-8?B?Sk91aEJUWWJQcTRlYlpCQmhaK21QTGVNUnJnd3UwM1NWT2VGTlJYZVZDT2pS?= =?utf-8?B?c2dvcFJHdmVLMGtQK2F1bFpEOEtMWHJuSEZPSG5wTldLVE9iREJTOWZvbXBJ?= =?utf-8?B?VW5sNlpBSXdydm8ydE9HcFlwQmpNVnBIL1hVdmpJcWlKajU5Uko3ZnJSK2xO?= =?utf-8?B?Vnl0Y3RRLys2WE5ZY3JYckpMYUFmdERRY1B5Z3hscm5HYXVYeXY3Uk5QVExm?= =?utf-8?B?T1h2aGg2RDRLdUtxVDI2amVhdDFHREs2dDdleDIrRWE5QUhCY0o1TThOQyth?= =?utf-8?B?MGlhS1ZIektQMmhkaDJZTnVVeHFtVkF3eXNPYWpML3k1NWdCa0xaUzVVRnVx?= =?utf-8?B?WXNNcHhGNGlVQ3BRaUIwRDVDU05BMUo1cFE2cVR6eElva3RuOVc5SE44bjJH?= =?utf-8?B?cFNQNWp1ZnhIMjY0VXRPb3ZuUGhJZE11M0c0ajBUYkJkZUl4MXBaR08rNWFy?= =?utf-8?B?WW9GWTQ2SjFIQzREMEJNa3VhcU1zdXhrQkZzTVhkeGJ5QmtLTEt6UHpoNVQ2?= =?utf-8?B?RDhKNUdPc3hCYjhGWm1jWFVkMkNjemZWajRPbkZzVzhBMG1mbkdabzZJZk8r?= =?utf-8?B?MXg2WTVyWVh0SkRycTJ5VkVRMHlUWUxZelNqTS9zaUtsNHY0cGpaY1FuVXVX?= =?utf-8?B?V0FBVnJiVitYN2RLdXhNR2ZiMW9qRjJ6Y3ZKMDdxNjNaV3hIZVlaQ3dJZzk3?= =?utf-8?B?TmxlTVVDS2czbm5MSVB6QT09?= X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:BYAPR10MB3366.namprd10.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230040)(376014)(366016)(1800799024);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?utf-8?B?WEhWV2g0ajBDK3FjRldPamJpL1V1bmxrNzcrS0JWSW9MbUVlRmwzYjBkdXBK?= =?utf-8?B?UjZUakY3ZGJzL1NJZkREV1hlYWF2WGVDRG5YYlRwWjR3b01SRERhdTl3Nlky?= =?utf-8?B?US9zR09xNGxuMjZpZTdmS0dMT0c1WU1FUzNwUm4zUXVFQlB4WkJUcnFhNzFD?= =?utf-8?B?anJGSElTbEVLNG1zN01qKzdiZUp4TWYrUzNnMTZxT3BIUXMydlVNZDNzWnJX?= =?utf-8?B?SGpIV3FMT1k2Smt5eDN5bHlxWXR0NDVMV29FWFlpUmN4VlZWVC9hUDdGL3N4?= =?utf-8?B?ckR6eXdnazBxcnh0U3diV2JVQnNqYW9RVnY5bHNKZ0JPazQ0bWs5TnJsSW9G?= =?utf-8?B?YmJUUXFKRjJLekp1b084bDcrSmQ1WFdrMkJKZUdFelZmbWtxNC9FN0J5TTlP?= =?utf-8?B?anBNR1BucWUxeTBJeXFUOWdPR3dEbWozVWlNcHl2MWZaYk1oZy9wbDNzRDhy?= =?utf-8?B?bDQ5QmtzL0lHdS9qUzVtRUFlMjBTWCtPMWpxTStZM01uMWk3dXJsUFNLK1Rs?= =?utf-8?B?SXhMalpIdmZBM001aXU3U3loTm5QWW5qRDl1MHFWZmZya0ZWRGgycGo0amJn?= =?utf-8?B?cHZjVUxsQk1WbExkVEZad3FWaXNmUnZvNTcxWnIxTFFzUFdVNzRJOWhSLzk3?= =?utf-8?B?elNJMlV5OUNvUUVhdnFET0UyLzk0cDgzN04vcDZnbVltQloyTXgzdnpYWXJt?= =?utf-8?B?QWsyWXYzdk9VTUxUWnJFZDVyaWxqQU1mdmllQkFpaC9IVFdFQTJJRjVmdU1s?= =?utf-8?B?eVJNOEZudk9SejRSUnF4QlQ0T2JkRlZsQlRWUS8zRzNySUhiYksyMDdpUkRO?= =?utf-8?B?SkF0K0lPR2JGVWs3bVBUa2xWY0hJMURrd00vbitzdjYrYmJpcCtrWkx0SGt2?= =?utf-8?B?QlUxRmpBdDBTNnZVZ00yOGpKa1dlakd4MUMyNEE1SGlMTDd0K1EvTHhpbTkw?= =?utf-8?B?aVJrK0QwUUJYVENkMWd3SklxTnpUd2V4R0RlZlNtYnR6eFA5Zlp0d0VLWGtH?= =?utf-8?B?TlRUQ0lFZVZWVG8rZjJ2ZXdPYkFOby9RMGxEbkZHcHEvSXpzbmZkREFneGJO?= =?utf-8?B?enk1YjVERTh2MmxPVGxicUNDLzJiUDVZVGlSSXN0MEF6bzNVNm5KSklWcnZL?= =?utf-8?B?dnJjMDlEZ2RqNENpTmtpNmkzSHFFK3ZOYmRMeEZ6M0U1encrRy9MQkF6SlNZ?= =?utf-8?B?T1Q2REh5OWtVRjV1U1o2b0hwcVpYamlzUEowbDZuRWI0bDM4dEVRZUlxcVdP?= =?utf-8?B?SVpDdkF3U3JZOEJKMUhhK2tzNTdtVTJhUjAyQWp2Qnh3OUtNOEhublVmMmVM?= =?utf-8?B?alU3bzlaUjBLNElBTTkyTC84ODJtNjBScnlTV0NwM1J6V1g1Ryt6MU56NEtO?= =?utf-8?B?dmRySlhoVmxvejNmS2o1MUJHR3YrdWZHMU1Nd1g3NUJpMUVDZGlVa29BT2Vh?= =?utf-8?B?Qk9lM2xpeUx4S0FXZGtEOERwUEI0czRISnlRMzZhZkozN0xEaHdwTFlPNGJG?= =?utf-8?B?NlhrQWd2aHY2eEViN0hIT0E1N2Q1dk1XM0tnb2hHdTQxczF6ZlRZdWRzUTcv?= =?utf-8?B?dERmR3k5akpkSW16WGl3TS9BWE1FVTluMkZKZUFIaVcxSU5ZUzViWkdHUmhQ?= =?utf-8?B?dEphMTdqdmFCenNJaXBJN1pjZW01ZzBwcmNoVGtIdjlYblZpY29CQ2xxbitn?= =?utf-8?B?UE1oUW5oUzlWcDJIWE5JRlFoYTR5enozSmRjRGQ3MmFBR2M4QWRUbjhaRHpC?= =?utf-8?B?M3Fva3BEOEEvZXF0ZUF3REFlQVVLcTNYKzVWTVRIVFp1OGNqaUdGbUNURVRB?= =?utf-8?B?SSsycUFlRTlVMllDVklZZWdXMjAxTHYyM3pNQXhSeHZxSTREQnFROUNyc2sz?= =?utf-8?B?QTd6WjhNeDhNaDh0QjhxTElqVnJVSjFpT1ZBUnIxa052OTNKWCtjaUl4SGlR?= =?utf-8?B?Qm40SHdrVWM0eDFqWTJ4eklGdHhhVm0vM3hSaVpMdmhxQlEzWU82Yk9TZDd3?= =?utf-8?B?ekVTYTgrZXNFN290SmFSSk5CZHhnL2NyTWh6dDl1SVVtZW80djBJanRrbWg0?= =?utf-8?B?TElEQ2pENlZvREprTldsNEU2VzMvTXVReGc3WnQ0RSt2cUM4Y2VBdk1xZzBV?= =?utf-8?B?bmtkbTg5RjBCUmJvNCtyWVMraGoxTUwyT281SndYbXF4WlVEYTNFK2tqTjFi?= =?utf-8?B?WkE9PQ==?= X-MS-Exchange-AntiSpam-ExternalHop-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-ExternalHop-MessageData-0: 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 X-OriginatorOrg: oracle.com X-MS-Exchange-CrossTenant-Network-Message-Id: 12fcb672-a047-46fc-15a3-08dd2f043501 X-MS-Exchange-CrossTenant-AuthSource: BYAPR10MB3366.namprd10.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 07 Jan 2025 10:15:27.5271 (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: j6ADXlqX90hoz7Au4ZVliIDRkCLTw/mR53n7PGRiiPoJvV3fHE2eBnIhEjOnDYTpnnBYI17VEgbyikGq0655BqmHKYeAbbzfM4EZ8BtLQwg= X-MS-Exchange-Transport-CrossTenantHeadersStamped: IA1PR10MB7215 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1057,Hydra:6.0.680,FMLib:17.12.68.34 definitions=2025-01-07_01,2025-01-06_02,2024-11-22_01 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=0 adultscore=0 spamscore=0 mlxlogscore=999 bulkscore=0 phishscore=0 malwarescore=0 mlxscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2411120000 definitions=main-2501070085 X-Proofpoint-ORIG-GUID: IBVP8-MENfAHuULl4gZmUZRaJIe3sPtf X-Proofpoint-GUID: IBVP8-MENfAHuULl4gZmUZRaJIe3sPtf X-Rspamd-Queue-Id: 25A744000A X-Rspamd-Server: rspam12 X-Stat-Signature: mp1w6uwpu7e1hfu5fms74tbmrdb1m1jf X-Rspam-User: X-HE-Tag: 1736244933-93139 X-HE-Meta: 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 hk+7y5dn 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 PSs4ZAMR RafbUGwOHP/7kYCUDerk2kYbJNPbx4JByIfWHJY7gGScV01FA3OzTzWU9Qo73EXxt094avLhUvcRvJNouv/vzXdZxngugRwOvAYOEhzJuG5X78DSO9V608fpUy8rriCygyUJ8MfgIy+XY3btB/uUDhgVLYFCYn3gzWhoo//j/IGMWsjp+7M4j5ofOEB7fXQo0D1LbIyZVNuo9aGAFEL813t/sI8TAAlApGn8JUDyzRX+n5LvohHFImrCrkTUE31IRDgTMN62pfs89SUwR3VX0g== 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: List-Subscribe: List-Unsubscribe: On Tue, Jan 07, 2025 at 09:14:54AM +0100, Dmitry Vyukov wrote: > On Thu, 2 Jan 2025 at 18:19, 'Aleksandr Nogikh' via syzkaller-bugs > wrote: > > > > On Thu, Jan 2, 2025 at 11:26 AM 'Lorenzo Stoakes' via syzkaller-bugs > > wrote: > > > > > > Happy new year! > > > > Happy New Year! :) > > > > > > > > On Tue, Dec 31, 2024 at 08:50:23PM -0800, syzbot wrote: > > > > Hello, > > > > > > > > syzbot found the following issue on: > > > > > > > > HEAD commit: 8379578b11d5 Merge tag 'for-v6.13-rc' of git://git.kernel... > > > > git tree: upstream > > > > console output: https://syzkaller.appspot.com/x/log.txt?x=16113018580000 > > > > kernel config: https://syzkaller.appspot.com/x/.config?x=d269ef41b9262400 > > > > dashboard link: https://syzkaller.appspot.com/bug?extid=46423ed8fa1f1148c6e4 > > > > compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 > > > > userspace arch: i386 > > > > > > Hmmmm 32-bit? But kernel reports give 64-bit registers? So I guess 32-bit > > > userland, 64-bit kernel? > > > > Yes, that's a 32-bit userspace binary running on a 64-bit kernel. > > > > > > > > > > > > > Unfortunately, I don't have any reproducer for this issue yet. > > > > > > Hmm. Racey thing? > > > > > > > > > > > Downloadable assets: > > > > disk image: https://storage.googleapis.com/syzbot-assets/86d2e3352aff/disk-8379578b.raw.xz > > > > vmlinux: https://storage.googleapis.com/syzbot-assets/345570cd3573/vmlinux-8379578b.xz > > > > kernel image: https://storage.googleapis.com/syzbot-assets/01da37a51505/bzImage-8379578b.xz > > > > > > > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > > > > Reported-by: syzbot+46423ed8fa1f1148c6e4@syzkaller.appspotmail.com > > > > > > > > RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 > > > > R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000 > > > > R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 > > > > > > > > ------------[ cut here ]------------ > > > > WARNING: CPU: 1 PID: 20504 at mm/vma.c:734 vma_merge_existing_range+0x1145/0x16f0 mm/vma.c:734 > > > > > > It'd be nice if syzbot could actually print the code that generates the > > > warning :) a nice-to-have perhaps. > > > > Thanks for the suggestion! > > I've filed https://github.com/google/syzkaller/issues/5654 > > It may be better for the kernel to do it. Then it would benefit all > testing systems, and most manual testing/reports as well. > Since WARN_ON is a macro, it should be trivial to capture the > condition string. I guess some embed kernels will want to turn it off, > so probably should be configurable. Well, you guys already print the userland portion right? It's not exactly an area of the kernel I'd like to fiddle with because these splats are output in unstable conditions and are probably best limited to outputting minimal information rather than trying to do the computation involved in disassembly. I think in any case you've misinterpreted :) so what I'm saying here is disassembly, you seem to be suggesting the __stringify(cond) thing, which actually I have now added in this case anyway [0], along with a whole host of other debug information. This means next time a non-repro case like this occurs in merge code we'll have a LOT more to go on. [0]:https://lore.kernel.org/linux-mm/cover.1735932169.git.lorenzo.stoakes@oracle.com/