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=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no 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 C7859CA90AF for ; Wed, 13 May 2020 12:29:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9DA1B20740 for ; Wed, 13 May 2020 12:29:22 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=wdc.com header.i=@wdc.com header.b="BexmQPtg"; dkim=pass (1024-bit key) header.d=sharedspace.onmicrosoft.com header.i=@sharedspace.onmicrosoft.com header.b="G0KcXJ8l" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731630AbgEMM3V (ORCPT ); Wed, 13 May 2020 08:29:21 -0400 Received: from esa4.hgst.iphmx.com ([216.71.154.42]:62845 "EHLO esa4.hgst.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726020AbgEMM3V (ORCPT ); Wed, 13 May 2020 08:29:21 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=wdc.com; i=@wdc.com; q=dns/txt; s=dkim.wdc.com; t=1589372960; x=1620908960; h=from:to:cc:subject:date:message-id:references: content-transfer-encoding:mime-version; bh=GVl2gnbGioJpKMQ/P87ig07ShgR7nvDTr2Ej2vwNut0=; b=BexmQPtge4ZslvRdKSMgYINbbo0lxJ51iQrjbVno04YA/DBcXQHikUX9 +6Fu2bq1aQ0TERNny/VMHSFte3q0+KgzFml7kTvRzjItOUa/s6lpwRrAf DI3AECp94eWV/Q/BVNSTNOUwlbba7z7/lzAEUZsWaT0oSHqGIWBiEb5GX fARkMsGyNgilxux1n6PcHi8BxBnIgREDxlwFZ2bbomRU0eNP60dwY/yT6 EgK5cvGLivo+FrwdE5j42wPrDeF32GhkmsjBhzNgX20QrGnuLvYtd+p2V +oYBMuq3Dz/9ymQD6apv91aDDT084GQFevJJX0WlcL8+niq2pne3j+YtB Q==; IronPort-SDR: fx9X4O2NSFjIaXeOnC3ejzN/5Yg8XdZyqdbFv5UT4K3xjpk003BcWAbGvj0hXm72lfE9dJ335c xqgw4cWDOxu0xo5FAjgZkD05ogWJ1IgjPtlDJoK3Ro/Ih8pmPspmGgQGHT0s8KvP/0qBd+cRyU VmRpgD9sBmyKf0JqEG4L9Jy1kGv5RomHwTlLAhv6aUzCJkkoipudCmcxvn/X7vtE3D9rqbiY+0 CzBn8otDxWtq8VeKv2qgo2urwlRys7hyppjIIEYxIZ61l+Eq6g2WOcRcQJj0DXYLGBv50NeGkJ X+U= X-IronPort-AV: E=Sophos;i="5.73,387,1583164800"; d="scan'208";a="137577163" Received: from mail-dm6nam11lp2176.outbound.protection.outlook.com (HELO NAM11-DM6-obe.outbound.protection.outlook.com) ([104.47.57.176]) by ob1.hgst.iphmx.com with ESMTP; 13 May 2020 20:29:07 +0800 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=KP7ZsHNN3uZYFk3/5axiTlO1XYkqITO0qqrZyl8TefVSUdIQj60IFHGuWZ8Mof8B7Tcid/2G7xglxg4Bw/v4tuR3uT3qFxoHgTqp8ZLofKDoC5Mii08tG7LCYfZN8gxKD8FRSbFMlBFU7a/7Yiz/TxNJkKSTq8jABvedtTu2fiCCwLum/g0Xv0HZx7EC5tI8Qrhe0dK/ZsxGpJNSRkJgkTbEtjnqYn0+W83Tp7KOsVpngT+2LUBqyQe6Lob3Dys5IN2ov5ySH8mkxSr0Adf4cpTjbefN5tPPACtFUFcdcd9y8nwe8PqF6YhGtqXaKwnhFi8gW200HTvnmF8Jzigi9Q== 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-SenderADCheck; bh=GVl2gnbGioJpKMQ/P87ig07ShgR7nvDTr2Ej2vwNut0=; b=YrR8p849q2h7ZdUN4tn38XYEP3AM8FeeA1QyaMOu8KBAWcfVp+fcQyKq7u8yn00m6bEWdJYHFFpAEMh5lh0UwzWHp7YBwXfHFrZfY7mtUGHFltDSDHYWMQKIMw5NMGkkxANc4YSdLbwV8zSGNfVElEXpzvxnYPTxgfebFFtZK5jXTWrvtVDwkRF7QOTif0MmEDHS2eQZfqRr9ngPnjf+ArqYuR2hIcsTDCZYH8NGGOwujPOLhVX3Mu0CbBdo0uST7ez02IkjtsZHrZWaZJ3c8C1i98vOtbZlnekxvW79LEZFv8jPoEnp5iqaeGfOki/BIsz3RURLoQSMk95sML4yOQ== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=wdc.com; dmarc=pass action=none header.from=wdc.com; dkim=pass header.d=wdc.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sharedspace.onmicrosoft.com; s=selector2-sharedspace-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=GVl2gnbGioJpKMQ/P87ig07ShgR7nvDTr2Ej2vwNut0=; b=G0KcXJ8lcDzmyroLSzv5oWmRmt0pGLLSTfaFWqyykI89/CxIc8Me6dBV/5vSWrXsUjXAZ/JIinUd3wFDhSCrRBFiDamp8u0fbRswfox7gI/ZUh27K4IE3Z0sDJHTJEPgNpvKpusGPWWTATtbBTgPbvvc33baCh7NGeQtGtsgH4I= Received: from SN4PR0401MB3598.namprd04.prod.outlook.com (2603:10b6:803:47::21) by SN4PR0401MB3709.namprd04.prod.outlook.com (2603:10b6:803:48::11) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.2979.33; Wed, 13 May 2020 12:29:06 +0000 Received: from SN4PR0401MB3598.namprd04.prod.outlook.com ([fe80::9854:2bc6:1ad2:f655]) by SN4PR0401MB3598.namprd04.prod.outlook.com ([fe80::9854:2bc6:1ad2:f655%4]) with mapi id 15.20.3000.022; Wed, 13 May 2020 12:29:06 +0000 From: Johannes Thumshirn To: Qu Wenruo , "dsterba@suse.cz" , David Sterba CC: "linux-btrfs@vger.kernel.org" Subject: Re: Bug 5.7-rc: root leak, eb leak Thread-Topic: Bug 5.7-rc: root leak, eb leak Thread-Index: AQHWKGfW6Ky5qVZQwUmLt+jF5CrP/Q== Date: Wed, 13 May 2020 12:29:06 +0000 Message-ID: References: <5e955017351005f2cc4c0210f401935203de8496c56cb76f53547d435f502803.dsterba@suse.com> <20200512230333.GH18421@twin.jikos.cz> <2dd7f27b-e505-aee5-2ffa-7e72f4623479@gmx.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: gmx.com; dkim=none (message not signed) header.d=none;gmx.com; dmarc=none action=none header.from=wdc.com; x-originating-ip: [129.253.240.72] x-ms-publictraffictype: Email x-ms-office365-filtering-ht: Tenant x-ms-office365-filtering-correlation-id: aa81dfe7-c806-4c69-1645-08d7f7393aa8 x-ms-traffictypediagnostic: SN4PR0401MB3709: x-microsoft-antispam-prvs: wdcipoutbound: EOP-TRUE x-ms-oob-tlc-oobclassifiers: OLM:4303; x-forefront-prvs: 0402872DA1 x-ms-exchange-senderadcheck: 1 x-microsoft-antispam: BCL:0; x-microsoft-antispam-message-info: 5n1vP+YMtX+3PhKqXBpTy0esrlCYSJsSL5xghAUbhgvjTJjWPgi5Kf+mUPkQD2tLR9ABDakS8PRDu32x374V7Ys6SAsQ2i1EF7+zUi0reT1c6B2hYeEF0YWkaBzFFXqaCxVVrbgKoR9dffA2WrpWysF53ZDo12Q9c+0qur9OJ8MxVHl+zQYxxCJFVodY/3QIbt6U3y3GqABtsUbbrDljdavjVC8VZxuD/egc3MVCvMCB3mUP6wo+HVEk7uEhH25XNOzqpkCJk8yNz3JIZlzDit9zgFMQtJ/OB45ml4GQuMNlf2GdfFOR/aCDdX4xo/OPDRaacz43tEG5CqwZrTfYFL58+Z9zvAYXSHmjgs15Z+e6Ml9DR2VSHISlxFiANdp16e8imSJSxcIuxueuVAcLqT1xBTT9P14UZ/SbNq6CO5DDkau+lsa32ZASX7mbj4jaPF93KONHJJvK+s0R1f6Tuj/uuQhrhj+u5fxPgr/BZtPIWYP5ZnU3Yu7BOA7JtZ8Oa0imfakh7YygH2eoDSlzEQ== x-forefront-antispam-report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:SN4PR0401MB3598.namprd04.prod.outlook.com;PTR:;CAT:NONE;SFTY:;SFS:(4636009)(136003)(39860400002)(376002)(346002)(396003)(366004)(33430700001)(8936002)(7696005)(186003)(26005)(91956017)(52536014)(33656002)(6506007)(5660300002)(9686003)(71200400001)(53546011)(55016002)(2906002)(66556008)(86362001)(316002)(110136005)(66946007)(8676002)(66446008)(33440700001)(4326008)(4744005)(64756008)(478600001)(76116006)(66476007);DIR:OUT;SFP:1102; x-ms-exchange-antispam-messagedata: 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 x-ms-exchange-transport-forked: True Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: wdc.com X-MS-Exchange-CrossTenant-Network-Message-Id: aa81dfe7-c806-4c69-1645-08d7f7393aa8 X-MS-Exchange-CrossTenant-originalarrivaltime: 13 May 2020 12:29:06.4206 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: b61c8803-16f3-4c35-9b17-6f65f441df86 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: He2TIe56KohCbCNhquF65ihERxlsQB8xlMcjSVCAEpmeVu3zqSkxnduc2HF/uhoHcQfx/ZGpe6nIxEwTCBHEL8gXVmQR91J6hw170XWgZpg= X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN4PR0401MB3709 Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org On 13/05/2020 14:17, Johannes Thumshirn wrote:=0A= [...]=0A= >>>=0A= >> This doesn't make sense.=0A= >>=0A= >> That line doesn't even call read_tree_block() nor even any function call= .=0A= >>=0A= >> This looks really strange.=0A= > =0A= > Indeed, it does. I have no clue what's going on here.=0A= > =0A= =0A= I just retested without KASAN enabled (to rule out any problems in that are= a) and =0A= the test (btrfs/028) passes. =0A= =0A= Turning KASAN back on fails the test again. So I /suspect/ it's a race some= where and =0A= changed timing (due to KASAN) triggers it.=0A=