From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=pass header.oldest-pass=0 smtp.remote-ip=216.71.153.141 ARC-Seal: i=2; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=pass; t=1793075164; b=ap3MSz9uipYvcxE4DzcY2wMXYqyuh5eIr7FPODyC/ZKd5Jj6xx6Y8xwG1N0jf7iY99bZ nz5A14pvOQkIQbwgrx+Xf5AlwRMdacT2mUWbPfkZIZatgclMoGCp0fgF4fSd3buPxoK7I 0rnG2DKpM8D4GVzyTlJ/FLp7u6La1leWK8jiKcY3nDIa+XD8AGSTzdi68AtlwNEwB6Tqa qTZdgAxHkcoL0KLz7/v4kBjgJiDHx4G6K3RTYaAkg4Y/4vPgAFIi/l8DaN9aXVx4/v5lg 52EYysOfmYWGQRgf2OcZquhadUndai+slyBLQ6ts/MGoXkD8U4PHhgBJzpPLHmXa5Mw== ARC-Message-Signature: i=2; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793075164; h=DMARC-Filter:DKIM-Signature:X-CSE-ConnectionGUID:X-CSE-MsgGUID: X-IronPort-AV:Received:DKIM-Signature:Received:Received:Date:From:To: Cc:Subject:Message-ID:References:Content-Type:Content-Disposition: In-Reply-To:X-ClientProxiedBy:MIME-Version:X-MS-PublicTrafficType: X-MS-TrafficTypeDiagnostic:X-MS-Office365-Filtering-Correlation-Id: WDCIPOUTBOUND:X-MS-Exchange-SenderADCheck: X-MS-Exchange-AntiSpam-Relay:X-Microsoft-Antispam: X-Microsoft-Antispam-Message-Info:X-Forefront-Antispam-Report: X-MS-Exchange-AntiSpam-MessageData-ChunkCount: X-MS-Exchange-AntiSpam-MessageData-0:X-Exchange-RoutingPolicyChecked: X-MS-Exchange-AntiSpam-ExternalHop-MessageData-ChunkCount: X-MS-Exchange-AntiSpam-ExternalHop-MessageData-0:X-OriginatorOrg: X-MS-Exchange-CrossTenant-Network-Message-Id: X-MS-Exchange-CrossTenant-AuthSource:X-MS-Exchange-CrossTenant-AuthAs: X-MS-Exchange-CrossTenant-OriginalArrivalTime: X-MS-Exchange-CrossTenant-FromEntityHeader: X-MS-Exchange-CrossTenant-Id:X-MS-Exchange-CrossTenant-MailboxType: X-MS-Exchange-CrossTenant-UserPrincipalName: X-MS-Exchange-Transport-CrossTenantHeadersStamped; bh=6buVcb0ySjD3VGLhUXzcY5PdHfXddCaHVeqwtYm8Vt0=; b=1S85QoDweMRpgcmiiBgj1rMmoD20Dq5lqbrgJwqnk7vK3jQWVfHAS+0g2VqL+puRY1zc XJuduRaMfhy46SFwajJ4w35ZVsUFW4GsqpaZWdGD+TKK9dnGvFCTkQaguP7sd/I97eqA4 6rIg9fsVyiFt2t61HE9ZfkzkqJO+PSCdzedJKV77if96/AxtiN2yyG4IUARuDOCY2XbaB rHlMySzZp68IM6H1V0fWVZ7nfGfJlFO5+x1R+dBH7BhgQijnIyS0eq57IHwz6A1Mk401U XZSMtYdeKgyNhW7HlR8xd9pqyuGBj7lkFHblUwFkuVgcTYqajNYsv8rFADOD3IUr+lw== ARC-Authentication-Results: i=2; smtp.subspace.kernel.org; dmarc=pass header.from=wdc.com; spf=pass smtp.mailfrom=wdc.com; dkim=pass header.d=wdc.com header.i=@wdc.com header.a=rsa-sha256 header.s=dkim.wdc.com header.b=UKeVWmSE; dkim=pass header.d=sharedspace.onmicrosoft.com header.i=@sharedspace.onmicrosoft.com header.a=rsa-sha256 header.s=selector2-sharedspace-onmicrosoft-com header.b=FXFPEH9A; arc=pass header.oldest-pass=0 smtp.remote-ip=216.71.153.141 Received: from esa3.hgst.iphmx.com (esa3.hgst.iphmx.com [216.71.153.141]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 27DF9606A31A for ; Tue, 27 Oct 2026 04:26:02 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org 27DF9606A31A Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=wdc.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=wdc.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=wdc.com header.i=@wdc.com header.a=rsa-sha256 header.s=dkim.wdc.com header.b=UKeVWmSE; dkim=pass (1024-bit key, unprotected) header.d=sharedspace.onmicrosoft.com header.i=@sharedspace.onmicrosoft.com header.a=rsa-sha256 header.s=selector2-sharedspace-onmicrosoft-com header.b=FXFPEH9A DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=wdc.com; i=@wdc.com; q=dns/txt; s=dkim.wdc.com; t=1793075163; x=1824611163; h=date:from:to:cc:subject:message-id:references: in-reply-to:mime-version; bh=IOc5QNmq0fsax/Aadq8pZLN0cA5KPDETXiWqQfTCA/M=; b=UKeVWmSEuj5ENT6C7TUKpb3CPhsOWeSsxo3BOwFXQodzV4tSMWr9R1Ix ONVCdQrRDt+3WYnYGX/6c4QgRwB1bPziky39hRAzXz0T3IwokOpKzbuY4 Nxchm2lv9eGyMnNn0lIHqsgphCAgU3i6iwEIPziH8h8oY0T9ePIk7rHfy EfOdhYn4qMN9vn/ovzdAV1VZVOSHrb2VuUxoUiLjx7UaF4ISm4Ko1GJxX jMSUj1cJWJejeBWWpY6FuL+eKaDwMvZtFAwOIsw4rZg7mQ5usE5mib7nC HAMaP7YtpqkCnj7mhvcZTx1I+Tc7Ho6DsvoqTBuJm07T1+31sWUw4rDot Q==; X-CSE-ConnectionGUID: bJp1399kSpKrUv7WHL6gbw== X-CSE-MsgGUID: JaD71WkKS6mjRBTHhlWnFA== X-IronPort-AV: E=Sophos;i="6.27,180,1786982400"; d="scan'208";a="159081000" Received: from mail-southcentralusazon11012023.outbound.protection.outlook.com (HELO SN4PR2101CU001.outbound.protection.outlook.com) ([40.93.195.23]) by ob1.hgst.iphmx.com with ESMTP/TLS/ECDHE-RSA-AES128-GCM-SHA256; 27 Oct 2026 12:26:02 +0800 ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=CDsFV4ne6mizYtP3t0YaPBFU1EuwpVbkwvY/+zbQwVy+Igk6Iy0NXlMwSIq4lpd3Ut5wBac6RTJDS4EkzODVTzxtBO1izUWTcz0uB+J+bXT+BJSpGnn/uPtu8uK2ZC8pPYXR9lKN6gvoC2GQQdC+nbPrAnL82ykyKux2RTLKwg/Ih5z3pPW6doZK8MrH76mQLUItWqPQXyT0v3uP67PQACDP9xR2h/JGMnPxlV5CbR6Te7M8QQOii/pT/lwWcVRTwM8HmZHhggq2qKkzVyVF7Bm3qdv1ODAF/IIWddcHCnF3Fj2XkW+mn6R0JakCy1Q5K+BvRlO6aNwfc75GgSzV5Q== 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=6buVcb0ySjD3VGLhUXzcY5PdHfXddCaHVeqwtYm8Vt0=; b=uSsajZQ8hq7dPz39AnW4nG8ar0UQ23TYJAB3lHs3xDMYYble8jRnnzgzvreVC6jpTz9Rg3kDct6pq9JD0nXrBEdijhTj1cKeVD6g2U0w37fSFtg/d+LoI53dyC7ZNJoHJ8lDHbwjnsQv5576iRAiXHOduHvs6cIEOhnNBvmjfVMQHTBtOqifXliZGeCQhDWwOowSjE6xe7sejPpUw2a555FK9OaIZtPpNi1DmZGGuKGLl1pevSxPAiAG6vMf0YFWhXy+jBueGCO4QT5TFJAwUSIRGDm41vJXNReddsnXlEzj65xWxj3bv9WnUOyKGl6v+AQ4WX0KKnY2alTjfgTClQ== 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=6buVcb0ySjD3VGLhUXzcY5PdHfXddCaHVeqwtYm8Vt0=; b=FXFPEH9A1e5RubQNCHJdfwvZrfWAkV/SywBYE5zCe/pD8pYmF7vAW6qmFe6o7R9tAtW/DWnBMh1BMYBh3hPnotE1zzZHClUm/Pb24q2Zuc9NVq8h2Ofeqw/3na0U6a4W13S9XsfeaaY50BtN3qUYPuPg2OQeQcEtrU1pmuFKTPI= Authentication-Results: mx.microsoft.com 1; dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=wdc.com; Received: from SA1PR04MB10065.namprd04.prod.outlook.com (2603:10b6:806:4dd::14) by DM6PR04MB6605.namprd04.prod.outlook.com (2603:10b6:5:1bf::20) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.21.546.22; Tue, 27 Oct 2026 04:24:14 +0000 Received: from SA1PR04MB10065.namprd04.prod.outlook.com ([fe80::9b98:bf8a:b0b1:ef85]) by SA1PR04MB10065.namprd04.prod.outlook.com ([fe80::9b98:bf8a:b0b1:ef85%5]) with mapi id 15.21.0546.021; Tue, 27 Oct 2026 04:24:14 +0000 Date: Tue, 27 Oct 2026 13:24:07 +0900 From: Shin'ichiro Kawasaki To: Julian Sun Cc: linux-block@vger.kernel.org, jack@suse.cz, axboe@kernel.dk, viro@zeniv.linux.org.uk, mcgrof@kernel.org, djwong@kernel.org, tz2294@columbia.edu Subject: Re: [PATCH 2/2] block: take the inode lock for buffered write fallback Message-ID: References: <20261015091105.1315605-1-sunjunchao@bytedance.com> <20261015091105.1315605-3-sunjunchao@bytedance.com> Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20261015091105.1315605-3-sunjunchao@bytedance.com> X-ClientProxiedBy: TYCP301CA0041.JPNP301.PROD.OUTLOOK.COM (2603:1096:400:380::7) To SA1PR04MB10065.namprd04.prod.outlook.com (2603:10b6:806:4dd::14) X-Mailing-List: linux-block@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SA1PR04MB10065:EE_|DM6PR04MB6605:EE_ X-MS-Office365-Filtering-Correlation-Id: 25473c9e-4bf5-4c09-8eb4-08df33e2287f WDCIPOUTBOUND: EOP-TRUE X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|366016|19092799006|23010399003|376014|1800799024|6133799003|10067099003|261026121527099003|18002099003|22082099003|3023799007|56012099006|11063799006|4143699003|261022105027099003|261021121427099003|261022075727099003|261009223027099003|261026140227099003; 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:SA1PR04MB10065.namprd04.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230040)(366016)(19092799006)(23010399003)(376014)(1800799024)(6133799003)(10067099003)(261026121527099003)(18002099003)(22082099003)(3023799007)(56012099006)(11063799006)(4143699003)(261022105027099003)(261021121427099003)(261022075727099003)(261009223027099003)(261026140227099003);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?3GMK0kQArRq/XKwTpPiEh516li7r5LssNst8YK/39sgZp2tO+PDici600+by?= =?us-ascii?Q?t6MUmADWLcOkw7cbSdcvWQ2jAfZmrJ/K/B4LIUwr37VHEtvhLT9Lq9IGTuot?= =?us-ascii?Q?UPs5trnxbK36IViBLG07pNIGagokDgOpk7RMinspf8BYnNatrHjb02TRBdh8?= =?us-ascii?Q?hIxc96Yy88GECDa9NEo0opuSE7p7WKs6+XHqJMedlStIDbtDdVOV1yKRX/4O?= =?us-ascii?Q?sdPnlqyaga3yvlonpPZtPdg+VrXowltVlYf+DRuMQzCLhQMEWStBqRvNg+Ve?= =?us-ascii?Q?Tis8F6nI0juGHQB1+qX6XkgFKQ0P6UHLwzQExnGHgwITcILI5r/OT/DgbBFW?= =?us-ascii?Q?/IvyF51zQClJ6E56lTLEk8yPBGQfT2rTpru6OC/y7fp/Tq6eRO3MMCPqljBl?= =?us-ascii?Q?nNT+/9cGaAATiIDIvnrnrvR4B2UVi7WKg1Pvez5RUqQ7t9qdepYv0JQNcVHD?= =?us-ascii?Q?gUmkLHx/l5J/wnjOr7cXcqwWKdxRlye32m0MQwnCqPNK2RLRL50TWN0RLjOs?= =?us-ascii?Q?A6QzJgkTkYs64cm3UcSK+DnWRvrhZhtTMmLzIF84wC4yNBep9x5NW5w00lGG?= =?us-ascii?Q?k+DN/VhC/ICUT3mboHhavv2H7nX4yDz91/t55Ka5WUct/vQmQWoxTUZq8xZP?= =?us-ascii?Q?TKR+C1urQJxorH90mBa4QKYktdHgeCwyMqpqU6yRKLF1GmXg0Z2vfLlJd43M?= =?us-ascii?Q?w1YDoJjWa5U3GZBDPSIefpQZPdoq24fvmSKF6vAGlOt4KZBS5OQLfcO/jXGT?= =?us-ascii?Q?Oq262vTz8LTDVGNvUfe0OzQYW43VPrIz0JqRK32oq6KEiYu6hx0mhEj75WAV?= =?us-ascii?Q?Flv/ACHAS0YyVwY9NPoZshV4iWM20vAH+rW8xEii679cPsyR8diWJ7XrWDA9?= =?us-ascii?Q?xaQ/kXjPHNywX2CSmftLHxUAldTS2MMo77wAvNi1wg5WA4MRjv000nvw6zF3?= =?us-ascii?Q?DsE/723hT5K7g17FzCwGl6h6QUdgCv4YMIALSlnDV8WTQGhFusRmgjXzZsBu?= =?us-ascii?Q?RRBswUvhnkFWW4mYhxNG07qFVplph4oBMMIW8lsopFg7P/WED/j157WHfP5n?= =?us-ascii?Q?SXdf7Kns+7KP+mfpWOP3WsCWWaQSh7sErPE8Xottutm8thl1H9e5l/xiq6uV?= =?us-ascii?Q?ehEXRS79oBX7fZU0diYBpnn2kPMz/vFIKQPU26haT6tzPkQ3tPs/Px8Y3n4r?= =?us-ascii?Q?TgqCV7xB/PCWXSiXQXif6Mq84KaTvL0P6ynnFk9SvglayHeCXheraXojRRhZ?= =?us-ascii?Q?xtvSfo++3SDl5SSg5f43xTBSAdGknuT2zeOwn+S/QHlte7JzS8MRf2NJXAHP?= =?us-ascii?Q?uRJ051nrepwuWeFzPTDMZFGg/FFHqKvvy09wnWpizztQ2VWiZtPm2k6BCWpT?= =?us-ascii?Q?EqP3ABHZzPhglxl4BA4+uyZw/s6HHaZcNotPHBcGATHis1Orof/j6ml/EHEQ?= =?us-ascii?Q?9czKvy0n/RnSqq3iCVd09gpYi/ILu7bHiwFh/N9fZUC0+ZbKM/GrrMjzM+mB?= =?us-ascii?Q?uxaCn294CGAIxoUjqvwX58eTDGgbTog/o/HPJpsYpiZlyBx/vqui2F5zh0pK?= =?us-ascii?Q?jSsOctTp+HcM4dc7T91HIeUbGDkmTQgkRsRFMYOWjZtxuPJImIz6mrwSk89w?= =?us-ascii?Q?xd3smnF3PkdVVG9hRuCjfQZSwf0r6XbhIP80Jm9p5vHKDx84dVZRIvCR2JOo?= =?us-ascii?Q?9BaFSskeg9Qkz3TBx8fzoMtmRa5sFng/7o5b2NNIyfteaVMLY2r/+Filp2wy?= =?us-ascii?Q?4U1B59SYoyBiQs0qXiKgeoaXY+JNZBk=3D?= X-Exchange-RoutingPolicyChecked: wcaOEhG32LR/M2qybRoNsa7ka6zv2du5sjkQ+RqChaOaA+YBFp9fuggjrJqNVBlnR70knGIKSoa91b6ZbHdsaeZ9pqUpu/iAnlyoD3Cjjv4UvbHV21iUURVi3oHymyJiW2zxqMgx6fWy5n40SJzoUg1tShMT8zC9llZSfUYemlNJ7gk6Pij8Pd1JdeqsgFC7ryIJ5I8gwwe2fyrmy5Zwvchckjy0iymRnrBcAxHxyPrH2g9BFvC+LWDG1lcJzDSiGj/KxVdbumdHEV8IUdsftGGrtz21NzWXEcfqYcn349Kp6ae0kjKWGXg5u6/uY4UY3rksVXie5FGMt0WGAkw2wQ== X-MS-Exchange-AntiSpam-ExternalHop-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-ExternalHop-MessageData-0: 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 X-OriginatorOrg: wdc.com X-MS-Exchange-CrossTenant-Network-Message-Id: 25473c9e-4bf5-4c09-8eb4-08df33e2287f X-MS-Exchange-CrossTenant-AuthSource: SA1PR04MB10065.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 27 Oct 2026 04:24:14.7139 (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: GeMdKzSaBOnR7UPVnRi4qJPzPTCK7WhbbQA/eBNuq2txLutiS+lgsAKv7P6zqZwhH69206Gefg6gq3baCniJLaypTCRt/xvGFTsBChUbOBw= X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM6PR04MB6605 CC+: Tal Zassman, On Oct 15, 2026 / 17:11, Julian Sun wrote: > Commit c0e473a0d226 ("block: fix race between set_blocksize and read > paths") added shared inode locking around ordinary buffered writes, > but missed the direct-I/O fallback path. > > Move the lock into blkdev_buffered_write() so both paths serialize > with set_blocksize(). > > Also correct the comment claiming that this path takes invalidate_lock; > it only takes i_rwsem. > > Fixes: c0e473a0d226 ("block: fix race between set_blocksize and read paths") > Signed-off-by: Julian Sun When I checking the new blktests test case block/050 by Tal Zussman [1], I found the test case hangs [2]. I bisected and this kernel change triggers the hang. Julian, may I ask you to take a look in the hang? [1] https://lore.kernel.org/linux-block/20261015-blkdev-fixes-tests-v3-1-b6ffa6410514@columbia.edu/ [2] dmesg during test case hang [ 93.055848] [ T1042] run blktests block/050 at 2026-10-27 13:15:20.266665152 [ 93.132099] [ T1042] null_blk: disk nullb1 created [ 93.204476] [ T1088] ============================================ [ 93.205320] [ T1088] WARNING: possible recursive locking detected [ 93.206137] [ T1088] 7.3.0-rc2+ #715 Not tainted [ 93.206784] [ T1088] -------------------------------------------- [ 93.207569] [ T1088] dio-fallback-ra/1088 is trying to acquire lock: [ 93.208415] [ T1088] ffff888100452a78 (&sb->s_type->i_mutex_key#13){++++}-{4:4}, at: blkdev_write_iter+0x928/0xf40 [ 93.209769] [ T1088] but task is already holding lock: [ 93.210736] [ T1088] ffff888100452a78 (&sb->s_type->i_mutex_key#13){++++}-{4:4}, at: blkdev_write_iter+0x882/0xf40 [ 93.212048] [ T1088] other info that might help us debug this: [ 93.213080] [ T1088] Possible unsafe locking scenario: [ 93.214051] [ T1088] CPU0 [ 93.214501] [ T1088] ---- [ 93.214934] [ T1088] lock(&sb->s_type->i_mutex_key#13); [ 93.215671] [ T1088] lock(&sb->s_type->i_mutex_key#13); [ 93.216370] [ T1088] *** DEADLOCK *** [ 93.217409] [ T1088] May be due to missing lock nesting notation [ 93.218468] [ T1088] locks held by dio-fallback-ra/1088: 1, last CPU#1: [ 93.219343] [ T1088] #0: ffff888100452a78 (&sb->s_type->i_mutex_key#13){++++}-{4:4}, at: blkdev_write_iter+0x882/0xf40 [ 93.220736] [ T1088] stack backtrace: [ 93.221490] [ T1088] CPU: 1 UID: 0 PID: 1088 Comm: dio-fallback-ra Not tainted 7.3.0-rc2+ #715 PREEMPT(full) [ 93.222766] [ T1088] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.17.0-10.fc44 06/10/2025 [ 93.223972] [ T1088] Call Trace: [ 93.224415] [ T1088] [ 93.224801] [ T1088] dump_stack_lvl+0x6a/0x90 [ 93.225381] [ T1088] print_deadlock_bug.cold+0xc0/0xcd [ 93.226033] [ T1088] __lock_acquire+0x1536/0x2490 [ 93.226705] [ T1088] lock_acquire+0x1b1/0x340 [ 93.227262] [ T1088] ? blkdev_write_iter+0x928/0xf40 [ 93.227880] [ T1088] ? __pfx___might_resched+0x10/0x10 [ 93.228538] [ T1088] down_read+0xa6/0x540 [ 93.229049] [ T1088] ? blkdev_write_iter+0x928/0xf40 [ 93.229754] [ T1088] ? __pfx_down_read+0x10/0x10 [ 93.230374] [ T1088] ? filemap_check_errors+0x58/0x100 [ 93.231040] [ T1088] blkdev_write_iter+0x928/0xf40 [ 93.231722] [ T1088] do_iter_readv_writev+0x48a/0xb80 [ 93.232382] [ T1088] ? __pfx_folio_add_lru_vma+0x10/0x10 [ 93.233070] [ T1088] ? rcu_read_unlock+0x1c/0x60 [ 93.233764] [ T1088] ? __folio_mod_stat+0x4c/0x190 [ 93.234399] [ T1088] ? __pfx_do_iter_readv_writev+0x10/0x10 [ 93.235108] [ T1088] ? folio_add_new_anon_rmap+0x34f/0xd40 [ 93.235860] [ T1088] ? selinux_file_permission+0x3c0/0x530 [ 93.236577] [ T1088] ? security_file_permission+0x44/0xc0 [ 93.237316] [ T1088] ? rw_verify_area+0x77/0x650 [ 93.237917] [ T1088] vfs_writev+0x27d/0xbc0 [ 93.238484] [ T1088] ? __pfx_vfs_writev+0x10/0x10 [ 93.239095] [ T1088] ? __handle_mm_fault+0x1584/0x1fb0 [ 93.239816] [ T1088] ? lock_acquire+0x1b1/0x340 [ 93.240425] [ T1088] ? __fget_files+0x1d8/0x440 [ 93.241021] [ T1088] ? do_pwritev+0x18a/0x300 [ 93.241653] [ T1088] do_pwritev+0x18a/0x300 [ 93.242183] [ T1088] ? __pfx_do_pwritev+0x10/0x10 [ 93.242837] [ T1088] ? lock_release+0x1b5/0x340 [ 93.243451] [ T1088] ? rcu_is_watching+0x12/0xb0 [ 93.244054] [ T1088] do_syscall_64+0xf2/0x690 [ 93.244688] [ T1088] ? do_syscall_64+0x2d/0x690 [ 93.245277] [ T1088] ? trace_hardirqs_off_finish+0x139/0x180 [ 93.246010] [ T1088] ? lockdep_hardirqs_off+0xaf/0xf0 [ 93.246724] [ T1088] ? do_syscall_64+0x60/0x690 [ 93.247325] [ T1088] entry_SYSCALL_64_after_hwframe+0x76/0x7e [ 93.248054] [ T1088] RIP: 0033:0x7f1cae028e32 [ 93.248676] [ T1088] Code: 08 0f 85 91 41 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 f3 0f 1e fa 55 bf 01 00 [ 93.251120] [ T1088] RSP: 002b:00007f1cadf98d98 EFLAGS: 00000246 ORIG_RAX: 0000000000000128 [ 93.252230] [ T1088] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f1cae028e32 [ 93.253253] [ T1088] RDX: 0000000000000002 RSI: 00007f1cadf98e20 RDI: 0000000000000004 [ 93.254275] [ T1088] RBP: 00007f1cadf98dc0 R08: 0000000000000000 R09: 0000000000000000 [ 93.255295] [ T1088] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f1ca8001000 [ 93.256307] [ T1088] R13: 00007fff0eee6560 R14: 0000000000000000 R15: 00007fff0eee6667 [ 93.257329] [ T1088] [ 247.593474] [ T48] INFO: task dio-fallback-ra:1088 blocked for more than 122 seconds. [ 247.595947] [ T48] Not tainted 7.3.0-rc2+ #715 [ 247.598101] [ T48] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 247.599361] [ T48] task:dio-fallback-ra state:D stack:0 pid:1088 tgid:1087 ppid:1042 task_flags:0x400040 flags:0x00080000 [ 247.599727] [ T48] Call Trace: [ 247.600141] [ T48] [ 247.600524] [ T48] __schedule+0x1fcc/0x6ef0 [ 247.600905] [ T48] ? asm_sysvec_apic_timer_interrupt+0x16/0x20 [ 247.601293] [ T48] ? trace_hardirqs_on+0x14/0x190 [ 247.601670] [ T48] ? __pfx___schedule+0x10/0x10 [ 247.602045] [ T48] ? lock_acquire+0x2f5/0x340 [ 247.602430] [ T48] ? lock_acquire+0x2f5/0x340 [ 247.602801] [ T48] ? rcu_is_watching+0x12/0xb0 [ 247.603182] [ T48] ? lock_release+0x285/0x340 [ 247.603549] [ T48] schedule+0xe3/0x2e0 [ 247.603917] [ T48] ? rwsem_down_read_slowpath+0x31e/0x10d0 [ 247.604296] [ T48] schedule_preempt_disabled+0x14/0x30 [ 247.604665] [ T48] rwsem_down_read_slowpath+0x61a/0x10d0 [ 247.605050] [ T48] ? __pfx_rwsem_down_read_slowpath+0x10/0x10 [ 247.605412] [ T48] ? __pfx___might_resched+0x10/0x10 [ 247.605765] [ T48] down_read+0xfa/0x540 [ 247.606110] [ T48] ? __pfx_down_read+0x10/0x10 [ 247.606889] [ T48] ? filemap_check_errors+0x58/0x100 [ 247.607286] [ T48] blkdev_write_iter+0x928/0xf40 [ 247.607634] [ T48] do_iter_readv_writev+0x48a/0xb80 [ 247.607987] [ T48] ? __pfx_folio_add_lru_vma+0x10/0x10 [ 247.608348] [ T48] ? rcu_read_unlock+0x1c/0x60 [ 247.608707] [ T48] ? __folio_mod_stat+0x4c/0x190 [ 247.609083] [ T48] ? __pfx_do_iter_readv_writev+0x10/0x10 [ 247.609445] [ T48] ? folio_add_new_anon_rmap+0x34f/0xd40 [ 247.609802] [ T48] ? selinux_file_permission+0x3c0/0x530 [ 247.610167] [ T48] ? security_file_permission+0x44/0xc0 [ 247.610521] [ T48] ? rw_verify_area+0x77/0x650 [ 247.610878] [ T48] vfs_writev+0x27d/0xbc0 [ 247.611244] [ T48] ? __pfx_vfs_writev+0x10/0x10 [ 247.611611] [ T48] ? __handle_mm_fault+0x1584/0x1fb0 [ 247.611971] [ T48] ? lock_acquire+0x1b1/0x340 [ 247.612375] [ T48] ? __fget_files+0x1d8/0x440 [ 247.612731] [ T48] ? do_pwritev+0x18a/0x300 [ 247.613115] [ T48] do_pwritev+0x18a/0x300 [ 247.613472] [ T48] ? __pfx_do_pwritev+0x10/0x10 [ 247.613849] [ T48] ? lock_release+0x1b5/0x340 [ 247.614160] [ T48] ? rcu_is_watching+0x12/0xb0 [ 247.614478] [ T48] do_syscall_64+0xf2/0x690 [ 247.614823] [ T48] ? do_syscall_64+0x2d/0x690 [ 247.615146] [ T48] ? trace_hardirqs_off_finish+0x139/0x180 [ 247.615457] [ T48] ? lockdep_hardirqs_off+0xaf/0xf0 [ 247.615759] [ T48] ? do_syscall_64+0x60/0x690 [ 247.616054] [ T48] entry_SYSCALL_64_after_hwframe+0x76/0x7e [ 247.616360] [ T48] RIP: 0033:0x7f1cae028e32 [ 247.616652] [ T48] RSP: 002b:00007f1cadf98d98 EFLAGS: 00000246 ORIG_RAX: 0000000000000128 [ 247.616984] [ T48] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f1cae028e32 [ 247.617287] [ T48] RDX: 0000000000000002 RSI: 00007f1cadf98e20 RDI: 0000000000000004 [ 247.617571] [ T48] RBP: 00007f1cadf98dc0 R08: 0000000000000000 R09: 0000000000000000 [ 247.617850] [ T48] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f1ca8001000 [ 247.618139] [ T48] R13: 00007fff0eee6560 R14: 0000000000000000 R15: 00007fff0eee6667 [ 247.618423] [ T48] [ 247.618698] [ T48] INFO: task dio-fallback-ra:1088 is blocked on an rw-semaphore, but the owner is not found. [ 247.618995] [ T48] INFO: task dio-fallback-ra:1089 blocked for more than 122 seconds. [ 247.619302] [ T48] Not tainted 7.3.0-rc2+ #715 [ 247.619669] [ T48] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 247.619997] [ T48] task:dio-fallback-ra state:D stack:0 pid:1089 tgid:1087 ppid:1042 task_flags:0x400040 flags:0x00080000 [ 247.620340] [ T48] Call Trace: [ 247.620660] [ T48] [ 247.620982] [ T48] __schedule+0x1fcc/0x6ef0 [ 247.621349] [ T48] ? __pfx_bio_wait_end_io+0x10/0x10 [ 247.621671] [ T48] ? __pfx___schedule+0x10/0x10 [ 247.622021] [ T48] ? lock_acquire+0x2f5/0x340 [ 247.622349] [ T48] ? lock_acquire+0x2f5/0x340 [ 247.622659] [ T48] ? rcu_is_watching+0x12/0xb0 [ 247.622973] [ T48] ? lock_release+0x285/0x340 [ 247.623294] [ T48] schedule+0xe3/0x2e0 [ 247.623602] [ T48] ? rwsem_down_read_slowpath+0x31e/0x10d0 [ 247.623957] [ T48] schedule_preempt_disabled+0x14/0x30 [ 247.624285] [ T48] rwsem_down_read_slowpath+0x61a/0x10d0 [ 247.624637] [ T48] ? __pfx_rwsem_down_read_slowpath+0x10/0x10 [ 247.624955] [ T48] ? blkdev_direct_IO+0x86f/0x1c50 [ 247.625322] [ T48] ? __pfx___might_resched+0x10/0x10 [ 247.625638] [ T48] down_read+0xfa/0x540 [ 247.625985] [ T48] ? __pfx_down_read+0x10/0x10 [ 247.626309] [ T48] ? filemap_check_errors+0x58/0x100 [ 247.626622] [ T48] blkdev_write_iter+0x882/0xf40 [ 247.626979] [ T48] do_iter_readv_writev+0x48a/0xb80 [ 247.627306] [ T48] ? vfs_writev+0x831/0xbc0 [ 247.627618] [ T48] ? __pfx_do_iter_readv_writev+0x10/0x10 [ 247.627976] [ T48] ? selinux_file_permission+0x3c0/0x530 [ 247.628303] [ T48] ? security_file_permission+0x44/0xc0 [ 247.628621] [ T48] ? rw_verify_area+0x77/0x650 [ 247.628941] [ T48] vfs_writev+0x27d/0xbc0 [ 247.629307] [ T48] ? __pfx_vfs_writev+0x10/0x10 [ 247.629628] [ T48] ? __fget_files+0x4f/0x440 [ 247.629981] [ T48] ? __fget_files+0x1d8/0x440 [ 247.630309] [ T48] ? do_pwritev+0x18a/0x300 [ 247.630623] [ T48] do_pwritev+0x18a/0x300 [ 247.630941] [ T48] ? __pfx_do_pwritev+0x10/0x10 [ 247.631265] [ T48] ? lock_release+0x1b5/0x340 [ 247.631577] [ T48] ? rcu_is_watching+0x12/0xb0 [ 247.631918] [ T48] do_syscall_64+0xf2/0x690 [ 247.632239] [ T48] ? rcu_read_unlock+0x17/0x60 [ 247.632548] [ T48] ? lock_release+0x1b5/0x340 [ 247.633267] [ T48] ? __handle_mm_fault+0x1584/0x1fb0 [ 247.633573] [ T48] ? __lock_acquire+0x54a/0x2490 [ 247.633875] [ T48] ? __pfx___css_rstat_updated+0x10/0x10 [ 247.634190] [ T48] ? lock_acquire+0x1b1/0x340 [ 247.634485] [ T48] ? rcu_is_watching+0x12/0xb0 [ 247.634783] [ T48] ? count_memcg_events+0x107/0x4c0 [ 247.635099] [ T48] ? find_held_lock+0x2b/0x80 [ 247.635397] [ T48] ? rcu_read_unlock+0x17/0x60 [ 247.635674] [ T48] ? lock_release+0x1b5/0x340 [ 247.635991] [ T48] ? find_held_lock+0x2b/0x80 [ 247.636308] [ T48] ? exc_page_fault+0x94/0x140 [ 247.636563] [ T48] ? lock_release+0x1b5/0x340 [ 247.636853] [ T48] ? rcu_is_watching+0x12/0xb0 [ 247.637100] [ T48] ? do_syscall_64+0x2d/0x690 [ 247.637359] [ T48] ? trace_hardirqs_off_finish+0x139/0x180 [ 247.637610] [ T48] ? lockdep_hardirqs_off+0xaf/0xf0 [ 247.637864] [ T48] ? do_syscall_64+0x60/0x690 [ 247.638113] [ T48] entry_SYSCALL_64_after_hwframe+0x76/0x7e [ 247.638382] [ T48] RIP: 0033:0x7f1cae028e32 [ 247.638639] [ T48] RSP: 002b:00007f1cad797d98 EFLAGS: 00000246 ORIG_RAX: 0000000000000128 [ 247.638977] [ T48] RAX: ffffffffffffffda RBX: 0000000000004000 RCX: 00007f1cae028e32 [ 247.639260] [ T48] RDX: 0000000000000002 RSI: 00007f1cad797e20 RDI: 0000000000000005 [ 247.639534] [ T48] RBP: 00007f1cad797dc0 R08: 0000000000000000 R09: 0000000000000000 [ 247.639810] [ T48] R10: 0000000000004000 R11: 0000000000000246 R12: 00007f1c9c001000 [ 247.640082] [ T48] R13: 00007fff0eee6560 R14: 0000000000000000 R15: 00007fff0eee6667 [ 247.640368] [ T48] [ 247.640636] [ T48] INFO: task dio-fallback-ra:1089 is blocked on an rw-semaphore, but the owner is not found. [ 247.640926] [ T48] INFO: task dio-fallback-ra:1091 blocked for more than 122 seconds. [ 247.641225] [ T48] Not tainted 7.3.0-rc2+ #715 [ 247.641512] [ T48] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 247.641813] [ T48] task:dio-fallback-ra state:D stack:0 pid:1091 tgid:1087 ppid:1042 task_flags:0x400040 flags:0x00080000 [ 247.642139] [ T48] Call Trace: [ 247.642446] [ T48] [ 247.642753] [ T48] __schedule+0x1fcc/0x6ef0 [ 247.643060] [ T48] ? blk_stat_add+0xbc/0x450 [ 247.643380] [ T48] ? rcu_is_watching+0x12/0xb0 [ 247.643685] [ T48] ? lock_release+0x285/0x340 [ 247.644028] [ T48] ? percpu_ref_put_many.constprop.0+0x39/0x1d0 [ 247.644348] [ T48] ? __pfx___schedule+0x10/0x10 [ 247.644655] [ T48] ? lock_acquire+0x2f5/0x340 [ 247.644964] [ T48] ? lock_acquire+0x2f5/0x340 [ 247.645318] [ T48] ? rcu_is_watching+0x12/0xb0 [ 247.645624] [ T48] ? lock_release+0x285/0x340 [ 247.645973] [ T48] schedule+0xe3/0x2e0 [ 247.646357] [ T48] ? rwsem_down_read_slowpath+0x31e/0x10d0 [ 247.646687] [ T48] schedule_preempt_disabled+0x14/0x30 [ 247.647028] [ T48] rwsem_down_read_slowpath+0x61a/0x10d0 [ 247.647354] [ T48] ? __pfx_rwsem_down_read_slowpath+0x10/0x10 [ 247.647669] [ T48] ? blk_mq_dispatch_queue_requests+0x51a/0x7e0 [ 247.648017] [ T48] ? blk_mq_dispatch_queue_requests+0x576/0x7e0 [ 247.648342] [ T48] ? __pfx_folio_batch_move_lru+0x10/0x10 [ 247.648658] [ T48] ? __pfx___might_resched+0x10/0x10 [ 247.649023] [ T48] down_read+0xfa/0x540 [ 247.649345] [ T48] ? __pfx_down_read+0x10/0x10 [ 247.649657] [ T48] ? __blk_flush_plug+0x29f/0x540 [ 247.649971] [ T48] ? selinux_file_permission+0x3c0/0x530 [ 247.650296] [ T48] ? security_file_permission+0x44/0xc0 [ 247.650610] [ T48] blkdev_read_iter+0x15a/0x4e0 [ 247.650927] [ T48] ? rw_verify_area+0x77/0x650 [ 247.651254] [ T48] vfs_read+0x6f4/0xb30 [ 247.651569] [ T48] ? blk_finish_plug+0x52/0xc0 [ 247.651887] [ T48] ? __pfx_vfs_read+0x10/0x10 [ 247.652243] [ T48] ? lock_release+0x285/0x340 [ 247.652560] [ T48] __x64_sys_pread64+0x18d/0x250 [ 247.652910] [ T48] ? __pfx___x64_sys_pread64+0x10/0x10 [ 247.653237] [ T48] ? rcu_is_watching+0x12/0xb0 [ 247.653552] [ T48] ? rcu_is_watching+0x12/0xb0 [ 247.653864] [ T48] ? do_syscall_64+0x7f/0x690 [ 247.654182] [ T48] do_syscall_64+0xf2/0x690 [ 247.654485] [ T48] ? force_page_cache_ra+0x21c/0x370 [ 247.654857] [ T48] ? generic_fadvise+0x35c/0x660 [ 247.655180] [ T48] ? __pfx_generic_fadvise+0x10/0x10 [ 247.655488] [ T48] ? rcu_is_watching+0x12/0xb0 [ 247.655786] [ T48] ? lock_release+0x285/0x340 [ 247.656078] [ T48] ? __fget_files+0x1d8/0x440 [ 247.656381] [ T48] ? fput+0x1b/0xa0 [ 247.656658] [ T48] ? fput+0x48/0xa0 [ 247.656969] [ T48] ? rcu_is_watching+0x12/0xb0 [ 247.657247] [ T48] ? do_syscall_64+0x1ff/0x690 [ 247.657507] [ T48] ? trace_hardirqs_on_prepare+0x139/0x180 [ 247.657806] [ T48] ? do_syscall_64+0x21d/0x690 [ 247.658049] [ T48] ? vfs_read+0x3b6/0xb30 [ 247.658305] [ T48] ? vfs_read+0x3b6/0xb30 [ 247.658547] [ T48] ? lock_acquire+0x1b1/0x340 [ 247.658792] [ T48] ? __pfx_vfs_read+0x10/0x10 [ 247.659034] [ T48] ? __fget_files+0x1ce/0x440 [ 247.659288] [ T48] ? lock_release+0x1b5/0x340 [ 247.659877] [ T48] ? fput+0x1b/0xa0 [ 247.660117] [ T48] ? fput+0x48/0xa0 [ 247.660364] [ T48] ? __x64_sys_pread64+0x1ad/0x250 [ 247.660604] [ T48] ? __pfx___x64_sys_pread64+0x10/0x10 [ 247.660884] [ T48] ? rcu_is_watching+0x12/0xb0 [ 247.661123] [ T48] ? do_syscall_64+0x1ff/0x690 [ 247.661407] [ T48] ? trace_hardirqs_on_prepare+0x139/0x180 [ 247.661649] [ T48] ? do_syscall_64+0x21d/0x690 [ 247.661939] [ T48] ? rcu_is_watching+0x12/0xb0 [ 247.662188] [ T48] ? do_syscall_64+0x2d/0x690 [ 247.662423] [ T48] ? trace_hardirqs_off_finish+0x139/0x180 [ 247.662658] [ T48] ? lockdep_hardirqs_off+0xaf/0xf0 [ 247.662900] [ T48] ? do_syscall_64+0x60/0x690 [ 247.663147] [ T48] entry_SYSCALL_64_after_hwframe+0x76/0x7e [ 247.663388] [ T48] RIP: 0033:0x7f1cae028e32 [ 247.663626] [ T48] RSP: 002b:00007f1ca45fedc8 EFLAGS: 00000246 ORIG_RAX: 0000000000000011 [ 247.663880] [ T48] RAX: ffffffffffffffda RBX: 0000000000002000 RCX: 00007f1cae028e32 [ 247.664144] [ T48] RDX: 0000000000002000 RSI: 00007f1c94000880 RDI: 0000000000000006 [ 247.664441] [ T48] RBP: 00007f1ca45fedf0 R08: 0000000000000000 R09: 0000000000000000 [ 247.664695] [ T48] R10: 0000000000002000 R11: 0000000000000246 R12: 00007f1c94000880 [ 247.664995] [ T48] R13: 00007fff0eee6540 R14: 0000000000000000 R15: 00007fff0eee6647 [ 247.665298] [ T48] [ 247.665551] [ T48] INFO: task dio-fallback-ra:1091 is blocked on an rw-semaphore, but the owner is not found. [ 247.665869] [ T48] INFO: task dio-fallback-ra:1092 blocked for more than 122 seconds. [ 247.666143] [ T48] Not tainted 7.3.0-rc2+ #715 [ 247.666429] [ T48] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 247.666719] [ T48] task:dio-fallback-ra state:D stack:0 pid:1092 tgid:1087 ppid:1042 task_flags:0x400140 flags:0x00080000 [ 247.667021] [ T48] Call Trace: [ 247.667327] [ T48] [ 247.667661] [ T48] __schedule+0x1fcc/0x6ef0 [ 247.667966] [ T48] ? rcu_is_watching+0x12/0xb0 [ 247.668307] [ T48] ? __pfx___schedule+0x10/0x10 [ 247.668606] [ T48] ? lock_acquire+0x2f5/0x340 [ 247.668906] [ T48] ? lock_acquire+0x2f5/0x340 [ 247.669210] [ T48] ? rcu_is_watching+0x12/0xb0 [ 247.669503] [ T48] ? lock_release+0x285/0x340 [ 247.669800] [ T48] schedule+0xe3/0x2e0 [ 247.670092] [ T48] ? _raw_spin_unlock_irq+0x34/0x50 [ 247.670400] [ T48] schedule_preempt_disabled+0x14/0x30 [ 247.670700] [ T48] rwsem_down_write_slowpath+0x4b3/0x1830 [ 247.671006] [ T48] ? __pfx_rwsem_down_write_slowpath+0x10/0x10 [ 247.671323] [ T48] ? rcu_is_watching+0x12/0xb0 [ 247.671626] [ T48] ? lock_release+0x285/0x340 [ 247.671930] [ T48] ? __pfx___mutex_lock+0x10/0x10 [ 247.672245] [ T48] ? __pfx___might_resched+0x10/0x10 [ 247.672553] [ T48] down_write+0x1be/0x1f0 [ 247.672994] [ T48] ? __pfx_down_write+0x10/0x10 [ 247.673328] [ T48] ? bdev_open+0x90c/0xc60 [ 247.673644] [ T48] set_blocksize+0x1ad/0x460 [ 247.673956] [ T48] ? bdev_file_open_by_dev+0xe6/0x170 [ 247.674279] [ T48] blkdev_bszset+0x142/0x1e0 [ 247.674592] [ T48] ? __pfx_blkdev_bszset+0x10/0x10 [ 247.674937] [ T48] ? lock_acquire+0x2f5/0x340 [ 247.675263] [ T48] ? rcu_is_watching+0x12/0xb0 [ 247.675583] [ T48] blkdev_ioctl+0x4e9/0x5e0 [ 247.675932] [ T48] ? __pfx_blkdev_ioctl+0x10/0x10 [ 247.676257] [ T48] __x64_sys_ioctl+0x138/0x1c0 [ 247.676569] [ T48] do_syscall_64+0xf2/0x690 [ 247.676882] [ T48] ? rcu_read_unlock+0x1c/0x60 [ 247.677268] [ T48] ? handle_mm_fault+0x35f/0x660 [ 247.677608] [ T48] ? rcu_is_watching+0x12/0xb0 [ 247.677952] [ T48] ? lock_release+0x285/0x340 [ 247.678315] [ T48] ? rcu_is_watching+0x12/0xb0 [ 247.678667] [ T48] ? do_user_addr_fault+0x52e/0xaf0 [ 247.679008] [ T48] ? rcu_is_watching+0x12/0xb0 [ 247.679350] [ T48] ? do_syscall_64+0x2d/0x690 [ 247.679690] [ T48] ? trace_hardirqs_off_finish+0x139/0x180 [ 247.680034] [ T48] ? trace_hardirqs_off+0x14f/0x1a0 [ 247.680369] [ T48] ? do_syscall_64+0x60/0x690 [ 247.680690] [ T48] entry_SYSCALL_64_after_hwframe+0x76/0x7e [ 247.681055] [ T48] RIP: 0033:0x7f1cae0a073d [ 247.681399] [ T48] RSP: 002b:00007f1ca7ffedd0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 247.681773] [ T48] RAX: ffffffffffffffda RBX: 0000000000000200 RCX: 00007f1cae0a073d [ 247.682088] [ T48] RDX: 00007f1ca7ffee3c RSI: 0000000040081271 RDI: 0000000000000003 [ 247.682386] [ T48] RBP: 00007f1ca7ffee20 R08: 0000000000000000 R09: 00007f1ca7fff6c0 [ 247.682710] [ T48] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000000000021 [ 247.683016] [ T48] R13: 00007fff0eee6540 R14: 0000000000000000 R15: 00007fff0eee6647 [ 247.683330] [ T48] [ 247.683643] [ T48] INFO: task dio-fallback-ra:1092 is blocked on an rw-semaphore, but the owner is not found. [ 247.683985] [ T48] INFO: lockdep is turned off. [ 370.473396] [ T48] INFO: task dio-fallback-ra:1088 blocked for more than 245 seconds. [ 370.475679] [ T48] Not tainted 7.3.0-rc2+ #715 [ 370.477650] [ T48] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 370.479255] [ T48] task:dio-fallback-ra state:D stack:0 pid:1088 tgid:1087 ppid:1042 task_flags:0x400040 flags:0x00080000 [ 370.479690] [ T48] Call Trace: [ 370.480085] [ T48] [ 370.480454] [ T48] __schedule+0x1fcc/0x6ef0 [ 370.480892] [ T48] ? asm_sysvec_apic_timer_interrupt+0x16/0x20 [ 370.481241] [ T48] ? trace_hardirqs_on+0x14/0x190 [ 370.481575] [ T48] ? __pfx___schedule+0x10/0x10 [ 370.481956] [ T48] ? lock_acquire+0x2f5/0x340 [ 370.482329] [ T48] ? lock_acquire+0x2f5/0x340 [ 370.482679] [ T48] ? rcu_is_watching+0x12/0xb0 [ 370.483565] [ T48] ? lock_release+0x285/0x340 [ 370.483890] [ T48] schedule+0xe3/0x2e0 [ 370.484268] [ T48] ? rwsem_down_read_slowpath+0x31e/0x10d0 [ 370.484619] [ T48] schedule_preempt_disabled+0x14/0x30 [ 370.484939] [ T48] rwsem_down_read_slowpath+0x61a/0x10d0 [ 370.485317] [ T48] ? __pfx_rwsem_down_read_slowpath+0x10/0x10 [ 370.485683] [ T48] ? __pfx___might_resched+0x10/0x10 [ 370.486011] [ T48] down_read+0xfa/0x540 [ 370.486382] [ T48] ? __pfx_down_read+0x10/0x10 [ 370.486738] [ T48] ? filemap_check_errors+0x58/0x100 [ 370.487087] [ T48] blkdev_write_iter+0x928/0xf40 [ 370.487701] [ T48] do_iter_readv_writev+0x48a/0xb80 [ 370.488224] [ T48] ? __pfx_folio_add_lru_vma+0x10/0x10 [ 370.488586] [ T48] ? rcu_read_unlock+0x1c/0x60 [ 370.488912] [ T48] ? __folio_mod_stat+0x4c/0x190 [ 370.489301] [ T48] ? __pfx_do_iter_readv_writev+0x10/0x10 [ 370.489661] [ T48] ? folio_add_new_anon_rmap+0x34f/0xd40 [ 370.490161] [ T48] ? selinux_file_permission+0x3c0/0x530 [ 370.490543] [ T48] ? security_file_permission+0x44/0xc0 [ 370.490874] [ T48] ? rw_verify_area+0x77/0x650 [ 370.491273] [ T48] vfs_writev+0x27d/0xbc0 [ 370.491634] [ T48] ? __pfx_vfs_writev+0x10/0x10 [ 370.491964] [ T48] ? __handle_mm_fault+0x1584/0x1fb0 [ 370.492350] [ T48] ? lock_acquire+0x1b1/0x340 [ 370.492713] [ T48] ? __fget_files+0x1d8/0x440 [ 370.493068] [ T48] ? do_pwritev+0x18a/0x300 [ 370.493440] [ T48] do_pwritev+0x18a/0x300 [ 370.493812] [ T48] ? __pfx_do_pwritev+0x10/0x10 [ 370.494186] [ T48] ? lock_release+0x1b5/0x340 [ 370.494532] [ T48] ? rcu_is_watching+0x12/0xb0 [ 370.494844] [ T48] do_syscall_64+0xf2/0x690 [ 370.495208] [ T48] ? do_syscall_64+0x2d/0x690 [ 370.495547] [ T48] ? trace_hardirqs_off_finish+0x139/0x180 [ 370.495856] [ T48] ? lockdep_hardirqs_off+0xaf/0xf0 [ 370.496326] [ T48] ? do_syscall_64+0x60/0x690 [ 370.496639] [ T48] entry_SYSCALL_64_after_hwframe+0x76/0x7e [ 370.496933] [ T48] RIP: 0033:0x7f1cae028e32 [ 370.497283] [ T48] RSP: 002b:00007f1cadf98d98 EFLAGS: 00000246 ORIG_RAX: 0000000000000128 [ 370.497644] [ T48] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f1cae028e32 [ 370.497965] [ T48] RDX: 0000000000000002 RSI: 00007f1cadf98e20 RDI: 0000000000000004 [ 370.498308] [ T48] RBP: 00007f1cadf98dc0 R08: 0000000000000000 R09: 0000000000000000 [ 370.498614] [ T48] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f1ca8001000 [ 370.498891] [ T48] R13: 00007fff0eee6560 R14: 0000000000000000 R15: 00007fff0eee6667 [ 370.499233] [ T48] [ 370.499539] [ T48] INFO: task dio-fallback-ra:1088 is blocked on an rw-semaphore, but the owner is not found. [ 370.499833] [ T48] INFO: task dio-fallback-ra:1089 blocked for more than 245 seconds. [ 370.500182] [ T48] Not tainted 7.3.0-rc2+ #715 [ 370.500541] [ T48] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 370.500849] [ T48] task:dio-fallback-ra state:D stack:0 pid:1089 tgid:1087 ppid:1042 task_flags:0x400040 flags:0x00080000 [ 370.501230] [ T48] Call Trace: [ 370.501622] [ T48] [ 370.501970] [ T48] __schedule+0x1fcc/0x6ef0 [ 370.502371] [ T48] ? __pfx_bio_wait_end_io+0x10/0x10 [ 370.502711] [ T48] ? __pfx___schedule+0x10/0x10 [ 370.503052] [ T48] ? lock_acquire+0x2f5/0x340 [ 370.503416] [ T48] ? lock_acquire+0x2f5/0x340 [ 370.503759] [ T48] ? rcu_is_watching+0x12/0xb0 [ 370.504097] [ T48] ? lock_release+0x285/0x340 [ 370.504437] [ T48] schedule+0xe3/0x2e0 [ 370.504776] [ T48] ? rwsem_down_read_slowpath+0x31e/0x10d0 [ 370.505113] [ T48] schedule_preempt_disabled+0x14/0x30 [ 370.505480] [ T48] rwsem_down_read_slowpath+0x61a/0x10d0 [ 370.505841] [ T48] ? __pfx_rwsem_down_read_slowpath+0x10/0x10 [ 370.506224] [ T48] ? blkdev_direct_IO+0x86f/0x1c50 [ 370.506576] [ T48] ? __pfx___might_resched+0x10/0x10 [ 370.506938] [ T48] down_read+0xfa/0x540 [ 370.507302] [ T48] ? __pfx_down_read+0x10/0x10 [ 370.507653] [ T48] ? filemap_check_errors+0x58/0x100 [ 370.508052] [ T48] blkdev_write_iter+0x882/0xf40 [ 370.508582] [ T48] do_iter_readv_writev+0x48a/0xb80 [ 370.509013] [ T48] ? vfs_writev+0x831/0xbc0 [ 370.509401] [ T48] ? __pfx_do_iter_readv_writev+0x10/0x10 [ 370.510181] [ T48] ? selinux_file_permission+0x3c0/0x530 [ 370.510538] [ T48] ? security_file_permission+0x44/0xc0 [ 370.510887] [ T48] ? rw_verify_area+0x77/0x650 [ 370.511266] [ T48] vfs_writev+0x27d/0xbc0 [ 370.511627] [ T48] ? __pfx_vfs_writev+0x10/0x10 [ 370.511948] [ T48] ? __fget_files+0x4f/0x440 [ 370.512325] [ T48] ? __fget_files+0x1d8/0x440 [ 370.512676] [ T48] ? do_pwritev+0x18a/0x300 [ 370.512990] [ T48] do_pwritev+0x18a/0x300 [ 370.513356] [ T48] ? __pfx_do_pwritev+0x10/0x10 [ 370.513701] [ T48] ? lock_release+0x1b5/0x340 [ 370.514036] [ T48] ? rcu_is_watching+0x12/0xb0 [ 370.514376] [ T48] do_syscall_64+0xf2/0x690 [ 370.514724] [ T48] ? rcu_read_unlock+0x17/0x60 [ 370.515060] [ T48] ? lock_release+0x1b5/0x340 [ 370.515392] [ T48] ? __handle_mm_fault+0x1584/0x1fb0 [ 370.515725] [ T48] ? __lock_acquire+0x54a/0x2490 [ 370.516047] [ T48] ? __pfx___css_rstat_updated+0x10/0x10 [ 370.516374] [ T48] ? lock_acquire+0x1b1/0x340 [ 370.516712] [ T48] ? rcu_is_watching+0x12/0xb0 [ 370.517009] [ T48] ? count_memcg_events+0x107/0x4c0 [ 370.517347] [ T48] ? find_held_lock+0x2b/0x80 [ 370.517661] [ T48] ? rcu_read_unlock+0x17/0x60 [ 370.517937] [ T48] ? lock_release+0x1b5/0x340 [ 370.518259] [ T48] ? find_held_lock+0x2b/0x80 [ 370.518555] [ T48] ? exc_page_fault+0x94/0x140 [ 370.518810] [ T48] ? lock_release+0x1b5/0x340 [ 370.519079] [ T48] ? rcu_is_watching+0x12/0xb0 [ 370.519384] [ T48] ? do_syscall_64+0x2d/0x690 [ 370.519662] [ T48] ? trace_hardirqs_off_finish+0x139/0x180 [ 370.519911] [ T48] ? lockdep_hardirqs_off+0xaf/0xf0 [ 370.520212] [ T48] ? do_syscall_64+0x60/0x690 [ 370.520493] [ T48] entry_SYSCALL_64_after_hwframe+0x76/0x7e [ 370.520750] [ T48] RIP: 0033:0x7f1cae028e32 [ 370.521009] [ T48] RSP: 002b:00007f1cad797d98 EFLAGS: 00000246 ORIG_RAX: 0000000000000128 [ 370.521333] [ T48] RAX: ffffffffffffffda RBX: 0000000000004000 RCX: 00007f1cae028e32 [ 370.521635] [ T48] RDX: 0000000000000002 RSI: 00007f1cad797e20 RDI: 0000000000000005 [ 370.521908] [ T48] RBP: 00007f1cad797dc0 R08: 0000000000000000 R09: 0000000000000000 [ 370.522230] [ T48] R10: 0000000000004000 R11: 0000000000000246 R12: 00007f1c9c001000 [ 370.522540] [ T48] R13: 00007fff0eee6560 R14: 0000000000000000 R15: 00007fff0eee6667 [ 370.522815] [ T48] [ 370.523114] [ T48] INFO: task dio-fallback-ra:1089 is blocked on an rw-semaphore, but the owner is not found. [ 370.523427] [ T48] INFO: task dio-fallback-ra:1091 blocked for more than 245 seconds. [ 370.523746] [ T48] Not tainted 7.3.0-rc2+ #715 [ 370.524053] [ T48] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 370.524380] [ T48] task:dio-fallback-ra state:D stack:0 pid:1091 tgid:1087 ppid:1042 task_flags:0x400040 flags:0x00080000 [ 370.524727] [ T48] Call Trace: [ 370.525060] [ T48] [ 370.525391] [ T48] __schedule+0x1fcc/0x6ef0 [ 370.525728] [ T48] ? blk_stat_add+0xbc/0x450 [ 370.526058] [ T48] ? rcu_is_watching+0x12/0xb0 [ 370.526390] [ T48] ? lock_release+0x285/0x340 [ 370.526725] [ T48] ? percpu_ref_put_many.constprop.0+0x39/0x1d0 [ 370.527058] [ T48] ? __pfx___schedule+0x10/0x10 [ 370.527393] [ T48] ? lock_acquire+0x2f5/0x340 [ 370.527731] [ T48] ? lock_acquire+0x2f5/0x340 [ 370.528063] [ T48] ? rcu_is_watching+0x12/0xb0 [ 370.528396] [ T48] ? lock_release+0x285/0x340 [ 370.528737] [ T48] schedule+0xe3/0x2e0 [ 370.529061] [ T48] ? rwsem_down_read_slowpath+0x31e/0x10d0 [ 370.529483] [ T48] schedule_preempt_disabled+0x14/0x30 [ 370.529840] [ T48] rwsem_down_read_slowpath+0x61a/0x10d0 [ 370.530206] [ T48] ? __pfx_rwsem_down_read_slowpath+0x10/0x10 [ 370.530590] [ T48] ? blk_mq_dispatch_queue_requests+0x51a/0x7e0 [ 370.530905] [ T48] ? blk_mq_dispatch_queue_requests+0x576/0x7e0 [ 370.531290] [ T48] ? __pfx_folio_batch_move_lru+0x10/0x10 [ 370.531649] [ T48] ? __pfx___might_resched+0x10/0x10 [ 370.531992] [ T48] down_read+0xfa/0x540 [ 370.532351] [ T48] ? __pfx_down_read+0x10/0x10 [ 370.532693] [ T48] ? __blk_flush_plug+0x29f/0x540 [ 370.533008] [ T48] ? selinux_file_permission+0x3c0/0x530 [ 370.533367] [ T48] ? security_file_permission+0x44/0xc0 [ 370.533712] [ T48] blkdev_read_iter+0x15a/0x4e0 [ 370.534047] [ T48] ? rw_verify_area+0x77/0x650 [ 370.534389] [ T48] vfs_read+0x6f4/0xb30 [ 370.534704] [ T48] ? blk_finish_plug+0x52/0xc0 [ 370.535042] [ T48] ? __pfx_vfs_read+0x10/0x10 [ 370.535417] [ T48] ? lock_release+0x285/0x340 [ 370.535765] [ T48] __x64_sys_pread64+0x18d/0x250 [ 370.536104] [ T48] ? __pfx___x64_sys_pread64+0x10/0x10 [ 370.536520] [ T48] ? rcu_is_watching+0x12/0xb0 [ 370.536857] [ T48] ? rcu_is_watching+0x12/0xb0 [ 370.537224] [ T48] ? do_syscall_64+0x7f/0x690 [ 370.537532] [ T48] do_syscall_64+0xf2/0x690 [ 370.537834] [ T48] ? force_page_cache_ra+0x21c/0x370 [ 370.538191] [ T48] ? generic_fadvise+0x35c/0x660 [ 370.538522] [ T48] ? __pfx_generic_fadvise+0x10/0x10 [ 370.538817] [ T48] ? rcu_is_watching+0x12/0xb0 [ 370.539139] [ T48] ? lock_release+0x285/0x340 [ 370.539459] [ T48] ? __fget_files+0x1d8/0x440 [ 370.539778] [ T48] ? fput+0x1b/0xa0 [ 370.540079] [ T48] ? fput+0x48/0xa0 [ 370.540375] [ T48] ? rcu_is_watching+0x12/0xb0 [ 370.540671] [ T48] ? do_syscall_64+0x1ff/0x690 [ 370.540931] [ T48] ? trace_hardirqs_on_prepare+0x139/0x180 [ 370.541234] [ T48] ? do_syscall_64+0x21d/0x690 [ 370.541509] [ T48] ? vfs_read+0x3b6/0xb30 [ 370.541753] [ T48] ? vfs_read+0x3b6/0xb30 [ 370.541994] [ T48] ? lock_acquire+0x1b1/0x340 [ 370.542289] [ T48] ? __pfx_vfs_read+0x10/0x10 [ 370.542564] [ T48] ? __fget_files+0x1ce/0x440 [ 370.542806] [ T48] ? lock_release+0x1b5/0x340 [ 370.543070] [ T48] ? fput+0x1b/0xa0 [ 370.543333] [ T48] ? fput+0x48/0xa0 [ 370.543607] [ T48] ? __x64_sys_pread64+0x1ad/0x250 [ 370.543878] [ T48] ? __pfx___x64_sys_pread64+0x10/0x10 [ 370.544144] [ T48] ? rcu_is_watching+0x12/0xb0 [ 370.544442] [ T48] ? do_syscall_64+0x1ff/0x690 [ 370.544681] [ T48] ? trace_hardirqs_on_prepare+0x139/0x180 [ 370.544922] [ T48] ? do_syscall_64+0x21d/0x690 [ 370.545210] [ T48] ? rcu_is_watching+0x12/0xb0 [ 370.545480] [ T48] ? do_syscall_64+0x2d/0x690 [ 370.545714] [ T48] ? trace_hardirqs_off_finish+0x139/0x180 [ 370.545949] [ T48] ? lockdep_hardirqs_off+0xaf/0xf0 [ 370.546249] [ T48] ? do_syscall_64+0x60/0x690 [ 370.546517] [ T48] entry_SYSCALL_64_after_hwframe+0x76/0x7e [ 370.546757] [ T48] RIP: 0033:0x7f1cae028e32 [ 370.546995] [ T48] RSP: 002b:00007f1ca45fedc8 EFLAGS: 00000246 ORIG_RAX: 0000000000000011 [ 370.547300] [ T48] RAX: ffffffffffffffda RBX: 0000000000002000 RCX: 00007f1cae028e32 [ 370.547627] [ T48] RDX: 0000000000002000 RSI: 00007f1c94000880 RDI: 0000000000000006 [ 370.547912] [ T48] RBP: 00007f1ca45fedf0 R08: 0000000000000000 R09: 0000000000000000 [ 370.548218] [ T48] R10: 0000000000002000 R11: 0000000000000246 R12: 00007f1c94000880 [ 370.548506] [ T48] R13: 00007fff0eee6540 R14: 0000000000000000 R15: 00007fff0eee6647 [ 370.548766] [ T48] [ 370.549041] [ T48] INFO: task dio-fallback-ra:1091 is blocked on an rw-semaphore, but the owner is not found. [ 370.549342] [ T48] INFO: task dio-fallback-ra:1092 blocked for more than 245 seconds. [ 370.549635] [ T48] Not tainted 7.3.0-rc2+ #715 [ 370.549985] [ T48] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 370.550319] [ T48] task:dio-fallback-ra state:D stack:0 pid:1092 tgid:1087 ppid:1042 task_flags:0x400140 flags:0x00080000 [ 370.550642] [ T48] Call Trace: [ 370.550994] [ T48] [ 370.551339] [ T48] __schedule+0x1fcc/0x6ef0 [ 370.551672] [ T48] ? rcu_is_watching+0x12/0xb0 [ 370.552022] [ T48] ? __pfx___schedule+0x10/0x10 [ 370.552349] [ T48] ? lock_acquire+0x2f5/0x340 [ 370.552708] [ T48] ? lock_acquire+0x2f5/0x340 [ 370.553001] [ T48] ? rcu_is_watching+0x12/0xb0 [ 370.553342] [ T48] ? lock_release+0x285/0x340 [ 370.553667] [ T48] schedule+0xe3/0x2e0 [ 370.553961] [ T48] ? _raw_spin_unlock_irq+0x34/0x50 [ 370.554330] [ T48] schedule_preempt_disabled+0x14/0x30 [ 370.554645] [ T48] rwsem_down_write_slowpath+0x4b3/0x1830 [ 370.554949] [ T48] ? __pfx_rwsem_down_write_slowpath+0x10/0x10 [ 370.555308] [ T48] ? rcu_is_watching+0x12/0xb0 [ 370.555643] [ T48] ? lock_release+0x285/0x340 [ 370.555943] [ T48] ? __pfx___mutex_lock+0x10/0x10 [ 370.556300] [ T48] ? __pfx___might_resched+0x10/0x10 [ 370.556639] [ T48] down_write+0x1be/0x1f0 [ 370.556974] [ T48] ? __pfx_down_write+0x10/0x10 [ 370.557328] [ T48] ? bdev_open+0x90c/0xc60 [ 370.557667] [ T48] set_blocksize+0x1ad/0x460 [ 370.557975] [ T48] ? bdev_file_open_by_dev+0xe6/0x170 [ 370.558335] [ T48] blkdev_bszset+0x142/0x1e0 [ 370.558678] [ T48] ? __pfx_blkdev_bszset+0x10/0x10 [ 370.558991] [ T48] ? lock_acquire+0x2f5/0x340 [ 370.559374] [ T48] ? rcu_is_watching+0x12/0xb0 [ 370.559701] [ T48] blkdev_ioctl+0x4e9/0x5e0 [ 370.560016] [ T48] ? __pfx_blkdev_ioctl+0x10/0x10 [ 370.560411] [ T48] __x64_sys_ioctl+0x138/0x1c0 [ 370.560754] [ T48] do_syscall_64+0xf2/0x690 [ 370.561086] [ T48] ? rcu_read_unlock+0x1c/0x60 [ 370.561424] [ T48] ? handle_mm_fault+0x35f/0x660 [ 370.561767] [ T48] ? rcu_is_watching+0x12/0xb0 [ 370.562100] [ T48] ? lock_release+0x285/0x340 [ 370.562451] [ T48] ? rcu_is_watching+0x12/0xb0 [ 370.562806] [ T48] ? do_user_addr_fault+0x52e/0xaf0 [ 370.563149] [ T48] ? rcu_is_watching+0x12/0xb0 [ 370.563471] [ T48] ? do_syscall_64+0x2d/0x690 [ 370.563765] [ T48] ? trace_hardirqs_off_finish+0x139/0x180 [ 370.564087] [ T48] ? trace_hardirqs_off+0x14f/0x1a0 [ 370.564406] [ T48] ? do_syscall_64+0x60/0x690 [ 370.564729] [ T48] entry_SYSCALL_64_after_hwframe+0x76/0x7e [ 370.565044] [ T48] RIP: 0033:0x7f1cae0a073d [ 370.565358] [ T48] RSP: 002b:00007f1ca7ffedd0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 370.565679] [ T48] RAX: ffffffffffffffda RBX: 0000000000000200 RCX: 00007f1cae0a073d [ 370.565968] [ T48] RDX: 00007f1ca7ffee3c RSI: 0000000040081271 RDI: 0000000000000003 [ 370.566311] [ T48] RBP: 00007f1ca7ffee20 R08: 0000000000000000 R09: 00007f1ca7fff6c0 [ 370.566623] [ T48] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000000000021 [ 370.566897] [ T48] R13: 00007fff0eee6540 R14: 0000000000000000 R15: 00007fff0eee6647 [ 370.567218] [ T48] [ 370.567514] [ T48] INFO: task dio-fallback-ra:1092 is blocked on an rw-semaphore, but the owner is not found. [ 370.567808] [ T48] INFO: lockdep is turned off.