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Fri, 8 Oct 2021 05:56:40 +0000 Received: from AM7PR04MB6821.eurprd04.prod.outlook.com ([fe80::2d84:325b:5918:7a19]) by AM7PR04MB6821.eurprd04.prod.outlook.com ([fe80::2d84:325b:5918:7a19%5]) with mapi id 15.20.4587.022; Fri, 8 Oct 2021 05:56:39 +0000 Message-ID: <561f21f4-9b85-8f1e-2f5a-957c1d888c11@suse.com> Date: Fri, 8 Oct 2021 13:56:29 +0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.1.1 Subject: Re: linux-next: build failure after merge of the btrfs tree Content-Language: en-US To: Stephen Rothwell , David Sterba Cc: Linux Kernel Mailing List , Linux Next Mailing List References: <20211008150346.557cf8aa@canb.auug.org.au> From: Qu Wenruo In-Reply-To: <20211008150346.557cf8aa@canb.auug.org.au> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-ClientProxiedBy: BY5PR17CA0052.namprd17.prod.outlook.com (2603:10b6:a03:167::29) To AM7PR04MB6821.eurprd04.prod.outlook.com (2603:10a6:20b:105::22) MIME-Version: 1.0 Received: from [0.0.0.0] (149.28.201.231) by BY5PR17CA0052.namprd17.prod.outlook.com (2603:10b6:a03:167::29) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4587.18 via Frontend Transport; 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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?utf-8?B?ZmRGTVZxaUpLRUhZOVhtZXBnMTZzUXBRRENhQ3FKWURRbHJteDJ3L0cyWjlB?= =?utf-8?B?WmU5WUhxc1Fhd1QwOHNEdGkxN1ZOL0VhQ2N1QXRHbktvUmkxZ2hyYkVUTHVN?= =?utf-8?B?MktsdjQ5V0pPZVRza3RMc2pvdjU3UFpDbTlTUndVcVRqM1FtVm9XZ0RqcC9i?= =?utf-8?B?dmcyWHh2RGd3aXdYZEtRcjVUS2ZtZHNxQmdURnRXYjVtRCtyYTQxaUhmRmkv?= =?utf-8?B?WXdvM25ZTTlWWEkxQmtOYW5kZ0RoeThNVElFa3crUGx5THhIelZGZWhiQ1I4?= =?utf-8?B?ZVNLOGpZK3RlVmV0ODN5NVRIWHVyTytKSWo2ZGNnMU9KZThhQ1hsa0VEZ3BH?= =?utf-8?B?SXBKbU9ZWS9IdDducnpCck01Z0xiSHNSUm1SRm05NHRuc2hDUXRTRUpCd05o?= =?utf-8?B?Y1VJb2ZySVNETDVHVFZiSmFnZm1NQjlDTGtEMjhGb2NvUmM5N0xZRSszTEJz?= =?utf-8?B?VG5ueGVZekRHN0crYm9lR2p4STNCL0p3Mmo4ZElBWGdqYmpQR2xuQzBUdStE?= =?utf-8?B?NXdadi80RUJwdXgybGlSM0tBRGZ5bDVqZEkra1dhbVdnQzBzeTlvUDhicTFD?= =?utf-8?B?TjNCd3JYN2paZUJ6NnFaeTQ5SGVvU0xrakNPcW9OK2JiWlZNTEVVRXoyVldV?= =?utf-8?B?dmJCcm1ERTlPN3lpNVdjblRCbWxNSTdwbUNuZ1RHcnRVblVlY2RiSHRXN29r?= =?utf-8?B?cjMxNi84a1hTSjBEalYrVGMwRUlBOS9BdXdwVTVSb2dTNm5JWWkyTWpvNHZ5?= =?utf-8?B?aUFCTnlnOWZDcFBSTS80ajNKUzNWdWMxbUJYd3VkMGpCUmFIODhXWFpVRmQ5?= =?utf-8?B?T0RpMHQxZWNEb21XL1liSVEvV2ZEbEcycllVcmRyM3FOTjVpNVZQVkYzbEp1?= =?utf-8?B?bWROQTNCTEZDMFV3dzBSbFZXRVpIdTFTZWNJSXVBWjBqa2Fxa2hHUmttYTZr?= =?utf-8?B?d1gwcDVuVTRMVnFXRy9kZkIrYW1IbFdZQ2YrcFg3YUQvbnlncjR3Rmt3bzVm?= =?utf-8?B?NUpTRTVRbTNNTDhYdDBrdjkrazlmaHJ0T0Y1bE1xdURQenFXQTNTQkJuNEs4?= =?utf-8?B?U3ZiTkhnVUtUQklWcmlCc0xtQkdhRVJJQXYyVGpGSnB5MlROaFFMeW5hdW5C?= =?utf-8?B?SDlhM2F6VGJqdHUwN2lmT1NxblNRTVd6MnFtQW43Q1A5U0Y5RTVWclc3TEZq?= =?utf-8?B?Y1djTWVHRCtadHlET0hjWVlva1hpb2dnZVV1WjRVZGsxTy8vNGlSSFFuMWRC?= =?utf-8?B?ek9oaVNNVGQvQ2ltSHBpdUFDQ1hkRXk0Q244VDhoc0RmU0FVOFJucGJ4MkpJ?= =?utf-8?B?RnBFcnVOem0xdU1Zb1JKSGdSNTdyV1dkaTRDSzZmQjF6cFpiV3RLZkxEdnYr?= =?utf-8?B?UHdmOExvVnJqMWF0WDV2TlU2YXN0SWg2Nis0M1k5ZnRvM21BbHNnQ2hFWGhG?= =?utf-8?B?dlNMLzBCd2JLOVF0Y3pyUFpTcnNhS1hQYldlZVdsdDVjVjllNnpFR3krWjVC?= =?utf-8?B?V3V6QnRHNlFSOWRGazJGVjRmeXo3T2FSMHZzdHpQajNCQnpSTTB5NnFpV0g0?= =?utf-8?B?Wm0vRWtUSklNZm5UbkZwZHhyVGxxcU5waFJyWTVxT21PZ3kxQjJxQWh6aEIw?= =?utf-8?B?djBWM0RFbjc5TmFDVWQvdEU0Y3VwUjdYMndydmh4bHFxRWVsd1Yyd0JqSUM3?= =?utf-8?B?QklzUFBEWk9zMmk3dS9PMWZKbklpN2V0TlhlMWNib1REbW1UZFhsZ0Z0K2ZY?= =?utf-8?Q?VNSzhZve8WfVJDDeIFXEzk9ZGzxv3m2idmIiFbF?= X-OriginatorOrg: suse.com X-MS-Exchange-CrossTenant-Network-Message-Id: d0ff8908-79da-49a0-aa07-08d98a206570 X-MS-Exchange-CrossTenant-AuthSource: AM7PR04MB6821.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 08 Oct 2021 05:56:39.7534 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: f7a17af6-1c5c-4a36-aa8b-f5be247aa4ba X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: ifTbl7tv+FOkxHs1VE1NlONqvQfLzlpAPxGmEvrxTapG4IDD8VBPp7TRnJAptJy1 X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM6PR04MB4901 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2021/10/8 12:03, Stephen Rothwell wrote: > Hi all, > > After merging the btrfs tree, today's linux-next build (nds32 allyesconfig > nds32le-gcc8) failed like this: > > nds32le-linux-ld: fs/btrfs/lzo.o: in function `lzo_compress_pages': > (.text+0x226): undefined reference to `__umoddi3' > nds32le-linux-ld: (.text+0x22a): undefined reference to `__umoddi3' > nds32le-linux-ld: (.text+0x660): undefined reference to `__umoddi3' > nds32le-linux-ld: (.text+0x664): undefined reference to `__umoddi3' > > Probably Caused by commit > > 0078783c7089 ("btrfs: rework lzo_compress_pages() to make it subpage compatible") Yes, that's the commit. It's calling (u64) % (u32), causing the problem. And we got an earlier report with a better solution by doing (u64) & (u32 mask - 1). I guess the latest version is not yet pushed to -next. Thanks, Qu > > This caused build failures in several other 32 bit architecture builds. >