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 lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 7FDBDCFC503 for ; Mon, 14 Oct 2024 08:28:32 +0000 (UTC) Received: from boromir.ozlabs.org (localhost [127.0.0.1]) by lists.ozlabs.org (Postfix) with ESMTP id 4XRr3M0jTMz3bkp; Mon, 14 Oct 2024 19:28:31 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; arc=fail smtp.remote-ip=198.175.65.14 ARC-Seal: i=2; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1728894511; cv=fail; b=U3I6+s+2lwMQjcynzoHj5ZNZXvsyLVvvQ0w4e5AS68D4/p/QlMPZUXjL+z9qT3ALZeNOJGRZgH/seVby6YPeoQrUVf5HMc6DzK+HPBRg/D4NM6ytaTJeq1QrYy2tRX6RlnjJkOBzJgFdBiMi7OrMGyqqv1TGvQo6j4Y3ngc1J2eJfsDr53o6DEJyMPdImR61BXGkxPbDjDzV4Edo9+/eaxx1Pr6Dff+txLOInh9nNr/nNDZ00pveA9OmVBWS/bkoLryrfRhH5DHeieqyw+ZDsywb8NSz0HQ0V+b1wyyaXxyn1D+wy7SkJVd3iWEnyiTLC5TCgCJUBBm1AiWshvfqqw== ARC-Message-Signature: i=2; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1728894511; c=relaxed/relaxed; bh=wdIHAujbv7MpYbWhsDDk81ueIDEBHddW1fPt4pD2VYI=; h=Date:From:To:CC:Subject:Message-ID:Content-Type: Content-Disposition:In-Reply-To:MIME-Version; b=CcdbuDZ6Nnk3mG77Hto/otYM61roZ2bivK/iPeqPjHkc7miFBS5JpDJLfjKTZGETSFW8dJ1ydXN50NWCsZHfe8LyjpYZi6Fahxf/6eeP58pkdfYh4eMCZcklrnKDTQerdKT9AwD/49pcI/Rpa/OiaJ8MuKWJjIcWvj4G/QTDRoNC/01W3OGWHfg2cYdz3+jbt8CWqF7uZWFbOZtLYhTCND5FDO8q+Wgpcl6NJJBz5Pr70K6EH2VwK/Gl9wGbjh/gVgMJNwKD4tH1n3fExen7YRBIUeiFXiE3M3OtEdWgL76hr189M2eRLJEAFny6egg9ye7MWSCYGGm5CDQPmQoFgQ== ARC-Authentication-Results: i=2; lists.ozlabs.org; dmarc=pass (p=none dis=none) header.from=intel.com; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.a=rsa-sha256 header.s=Intel header.b=K9hXoP+d; dkim-atps=neutral; spf=pass (client-ip=198.175.65.14; helo=mgamail.intel.com; envelope-from=oliver.sang@intel.com; receiver=lists.ozlabs.org) smtp.mailfrom=intel.com Authentication-Results: lists.ozlabs.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.a=rsa-sha256 header.s=Intel header.b=K9hXoP+d; dkim-atps=neutral Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=intel.com (client-ip=198.175.65.14; helo=mgamail.intel.com; envelope-from=oliver.sang@intel.com; receiver=lists.ozlabs.org) Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.14]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4XRr3H5PZDz2ysv for ; Mon, 14 Oct 2024 19:28:24 +1100 (AEDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1728894508; x=1760430508; h=date:from:to:cc:subject:message-id:in-reply-to: mime-version; bh=WBSvAzrKK3tD1rsrWLLBwBD3ywmu/P90L6Qdz5ckulg=; b=K9hXoP+dqpBjGWTCyNHAN8lmA7G9m5SlhBI7bkIoiwk1tNcSPHoLWDnY 9cXWrDjLJEIiOFGG4s/iA3OF5LpmUkQgcm6rYucA4G0OoVUh6kQ2w+b26 BqUrB9t3a7OQW4hbiZTWjqixrd2Eo/LjM6ANkBNnvMlKcPImFt20vgMFH 2mV8bjwY11x9ztCCKL2PzA5uIMZV2JOCzzK8W/tiIKpcT47Enn7WPUqzo nvNPWhS8le2zFpflPA1DrnGfau33Wa+lSee12kkR1yuwRvItFrNFANsrV mOJpQ5Y23jskZGsPT2CsLd8nniVYqy/KpNMGD8fDopEw+fl2dF2UV4c/e w==; X-CSE-ConnectionGUID: ePRHTTRdQ96SBml3YgydRQ== X-CSE-MsgGUID: Ati9JL8XTVe2pWUWAi5muQ== X-IronPort-AV: E=McAfee;i="6700,10204,11224"; a="32028738" X-IronPort-AV: E=Sophos;i="6.11,202,1725346800"; d="scan'208";a="32028738" Received: from fmviesa007.fm.intel.com ([10.60.135.147]) by orvoesa106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 14 Oct 2024 01:28:20 -0700 X-CSE-ConnectionGUID: nqqYs9V8T7+FAri5o4lzuQ== X-CSE-MsgGUID: o2zhUBxYTeG//1jEBEmekQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.11,202,1725346800"; d="scan'208";a="77161462" Received: from fmsmsx603.amr.corp.intel.com ([10.18.126.83]) by fmviesa007.fm.intel.com with ESMTP/TLS/AES256-GCM-SHA384; 14 Oct 2024 01:28:20 -0700 Received: from fmsmsx601.amr.corp.intel.com (10.18.126.81) by fmsmsx603.amr.corp.intel.com (10.18.126.83) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.39; Mon, 14 Oct 2024 01:28:19 -0700 Received: from fmsmsx611.amr.corp.intel.com (10.18.126.91) by fmsmsx601.amr.corp.intel.com (10.18.126.81) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.39; Mon, 14 Oct 2024 01:28:19 -0700 Received: from fmsmsx603.amr.corp.intel.com (10.18.126.83) by fmsmsx611.amr.corp.intel.com (10.18.126.91) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.39; Mon, 14 Oct 2024 01:28:19 -0700 Received: from fmsedg601.ED.cps.intel.com (10.1.192.135) by fmsmsx603.amr.corp.intel.com (10.18.126.83) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.39 via Frontend Transport; Mon, 14 Oct 2024 01:28:19 -0700 Received: from NAM10-DM6-obe.outbound.protection.outlook.com (104.47.58.43) by edgegateway.intel.com (192.55.55.70) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.2507.39; Mon, 14 Oct 2024 01:28:18 -0700 ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=A3xVpyWt+i3MNFvl9eg/fA2MhHpRKSsGq9H3mCe/eLEFjHM9DO4KljhIPdUqq0wOJHJuQuJFk16wY6YXgEy1UxcTsiuZlUt8PRZ2QcRxPmmcrv0BGSFtb6nVwzaYJtI9Bm6I3Vbh0gDImpRw8Lh2cvau9T5wVLSHSb6lIHJhDXWr5d2wIkdN/n2JsLzKidEf4G+NoW9ZoW66NQNYub5fyyjbqOcWXSoOUtm+f28x21cHX213LFi/Mns9pdaPh+ci+aAz7Uf9sSCGGgPtU2e30W113hmyXCkhXmgFqkIMqKX+K9hmRpRmkZCY1E69WgQxC8DurmJqjhhsKjS42jwRHA== 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=wdIHAujbv7MpYbWhsDDk81ueIDEBHddW1fPt4pD2VYI=; b=EYbor9Ts7JIxsvtB7Pj50bfph/FEipSMTwqGAmetAahwkkSUfFOsLdj3DNwVwTWfit7NguGCfXnle6Bexp+DJvHiD9nI+Ds4K8w0JFvmLWdeggVziUutaOLGuwESN8zCMfwyLdl7Qlw+G9oZVljbxQwhc7gOv+FfWX5axjVbxVUiiBcV4KlRS37k5rokJY5go0z54ivfZYum9pFIN0KGCkc2grkD7RZIOWzO/9P4lyqMbOePUdMRxqAxTlOPmq8AgCzGvH1qhU+BAtTHVARipeA148Up/MsZoa+sxEUcTdrZWNSuQQCLyi/+m0rGjHNyuflxAlSrfnla5A1CGrj52Q== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=intel.com; dmarc=pass action=none header.from=intel.com; dkim=pass header.d=intel.com; arc=none Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=intel.com; Received: from LV3PR11MB8603.namprd11.prod.outlook.com (2603:10b6:408:1b6::9) by PH8PR11MB6879.namprd11.prod.outlook.com (2603:10b6:510:229::22) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8048.27; Mon, 14 Oct 2024 08:28:16 +0000 Received: from LV3PR11MB8603.namprd11.prod.outlook.com ([fe80::4622:29cf:32b:7e5c]) by LV3PR11MB8603.namprd11.prod.outlook.com ([fe80::4622:29cf:32b:7e5c%5]) with mapi id 15.20.8048.020; Mon, 14 Oct 2024 08:28:16 +0000 Date: Mon, 14 Oct 2024 16:27:57 +0800 From: kernel test robot To: Mathieu Desnoyers CC: , , Nicholas Piggin , Michael Ellerman , "Greg Kroah-Hartman" , Sebastian Andrzej Siewior , "Paul E. McKenney" , Will Deacon , Peter Zijlstra , Boqun Feng , Alan Stern , John Stultz , Neeraj Upadhyay , "Linus Torvalds" , Andrew Morton , Frederic Weisbecker , "Joel Fernandes" , Josh Triplett , Uladzislau Rezki , Steven Rostedt , Lai Jiangshan , Zqiang , Ingo Molnar , Waiman Long , "Mark Rutland" , Thomas Gleixner , Vlastimil Babka , Mateusz Guzik , "Jonas Oberhauser" , , , , , Mathieu Desnoyers , , , , Subject: Re: [RFC PATCH v3 4/4] sched+mm: Use hazard pointers to track lazy active mm existence Message-ID: <202410141617.612a0f5b-lkp@intel.com> Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: <20241008135034.1982519-5-mathieu.desnoyers@efficios.com> X-ClientProxiedBy: KL1PR0401CA0027.apcprd04.prod.outlook.com (2603:1096:820:e::14) To LV3PR11MB8603.namprd11.prod.outlook.com (2603:10b6:408:1b6::9) X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Post: List-Subscribe: , , List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: LV3PR11MB8603:EE_|PH8PR11MB6879:EE_ X-MS-Office365-Filtering-Correlation-Id: 5c258db2-b9a0-46b2-823e-08dcec2a26a0 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|7416014|366016|1800799024; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?xUkaHujL+rz/hE5291QSZ21DzKM/VAXM6oohZBb3TAGFTxpw1XQB9iVZofRD?= =?us-ascii?Q?pPh0WX91aXnI6wYmZDGEczdu1aTL7+62EmmdGAJI82JvkClj1oMEAd0SpvgA?= =?us-ascii?Q?CTlW/dK+mFUj34vAnUtJafTLbwS/kkRUoWaGapZGRw3pUi5LlN6753sNz0jH?= =?us-ascii?Q?IdHrbu/TZuBVjdvwPemlLW/AUfUCDAwAyzq0uv3GMdmdtH6xdqBDgDZLOgln?= =?us-ascii?Q?5F6WbilizSHbgHJrIEU75+qNKwp3/4vHIZVRZCdgyIYm0JIm8VPaYUoYjyOx?= =?us-ascii?Q?6FABiQ6i+d4it/B0sIBbYYlFl7nqGJ6uscZqlcZ412/P/r4D6zpYkQ3n0OhN?= =?us-ascii?Q?kARAAOBGi8Rojmj8wvO09abrjJXjj6NMREvMAzq5pRZOuq6zb3xoAZ4w2vpU?= =?us-ascii?Q?Axpn0GlU9Bkhw7PTHxK0kBGWcOI9rvTcqOIx5UGvCIsXBN9+yy/LRX4Axgdl?= =?us-ascii?Q?qjY+3JUZl5u7MHBGCwT2bUJXEpKZL0W85U1Tk6VfcWqM8Peu0B3LEpOa9QsT?= =?us-ascii?Q?LFwJJgCiIVMUX2zIwbeDsFqPC/ja/YI65ekdIysPaOb081Id07OpsrW7Oay7?= =?us-ascii?Q?3NQvJVp1+/bxMyLKWrarXc6xa/S+SToyLiTmDRhw8DyVIZ6MP0ZHhTBu6qdL?= =?us-ascii?Q?60j4q0KsMBRKNkroTL0/rJ6YOGfXTnRiQrO87YZD/4X/kYEPrbHwSg1cu9x2?= =?us-ascii?Q?YQo7Es5vUKSbJx1InNOwKgtri8mI7222B0jjdSoVZ0rKV/BGL3M5j0gnWtLS?= =?us-ascii?Q?e43KBwCqO0S0pPqa/XOGg/ww9WuXxym6f5kGRwZ7dmEDN/W6SUoM71irAhte?= =?us-ascii?Q?0GjAyyv5Yj3T8RD8yMVK10bMCbpRfjSWnLq7HHubcLG12F8dtulydriKBM6e?= =?us-ascii?Q?9zLHsYcwE1KfS7vH0/3Pb5mA4pS688ceXCxJHWJCSipvaAgI2vsCSZZHBqyO?= =?us-ascii?Q?mu14A3yJp7gG1P9/v9H2Mujczqh+wSqPvop0O6rSCzG/RwkjC9BKTq5uH7DM?= =?us-ascii?Q?h/slo1zrcf8WUlxE45cP3rmVR9pcxk7HZiG7as47nStscb58YIdiWpf0KSoq?= =?us-ascii?Q?3gZkJ+9I99SHqGDF7Zz2ywTclk0HiW2DiuLmBn5n6rgys5cWCEb0IUt5ZqSg?= =?us-ascii?Q?VQ4TmqZNzmFabwSqnm3+LO3Hl+WiWJuNrQumfjXVT2Ea1fGigfAj1bp37Ylg?= =?us-ascii?Q?q3QMEOpe/XsC///SG2qCC6EfGDcN1xh823cUuBnMaA+P/Ik/lgGEMUL11IM?= =?us-ascii?Q?=3D?= X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:LV3PR11MB8603.namprd11.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230040)(376014)(7416014)(366016)(1800799024);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?/eVxgTH0lGgb0Q70Dyf2dA6Vp23wvtd6eit/gDtZqZ3JXmlLgkismLpFRjy8?= =?us-ascii?Q?N4djgATPNNO4jY8FDewJv4HGkRx5zaTI+geBUe4AF3saR03w29evbax1pF0V?= =?us-ascii?Q?C/WZG2vnn1G8VpEYIvEPsbqmDiS2BBg9IlU4PkHRqAsCwU7nu1vpdz5f/vt0?= =?us-ascii?Q?4ELa3KzTOnkbf2o7h7IGvvULy2dPOUEykc7qAo8FUVn0/ZKvtdDGZRqkp+ZQ?= =?us-ascii?Q?K/vWtwNwOb7/obBxA+h9EaLGbtOMABqaabjl6635klV7n3yO0i8oUTwVMRl7?= =?us-ascii?Q?Zsnc0eEBqaagnDIdj2EVOfnW3tvv5zP+CFYnmZ488wb9m0jqdwgqurxxFZot?= =?us-ascii?Q?afaNMVWwYuXFyqVCU4TmzWG6Sa6FNug9ps5wRUdYSW73Xg9GccIweLHP6BkP?= =?us-ascii?Q?WemkyWmZtpXYhvaW3iZqfU5dF6YjnzHROnDNiEDxIwBpW9C8fxHtCTTU3pG9?= =?us-ascii?Q?YlGxHdL7rnzQA1XOYXLRnSrCmegosFW4b7rNQp61ISHfA5tuKieyfL5N5EFZ?= =?us-ascii?Q?HqjXM680KMHMYVWoj48Sddmm8wRjge6JSCr0otV4i5ja4TD3K/uyotleq/VJ?= =?us-ascii?Q?ETGjEZ8HPSbRzXEYm9wKu/2XuPhCsENpFrkViImI3nO4py30o37wSJ42EZp8?= =?us-ascii?Q?asoq8IalisykWoA/bCsSoiv0yLjpKDlY0q9/BfHjEDGp6bGz0ksulLvg+IKT?= =?us-ascii?Q?HvcJfGvOs6gZcwY6QrFIKT4ik//k5RLdaiwBfh4WmOR0BpYypn2kMQs3pM1Q?= =?us-ascii?Q?Gzub9fhZTeHESSEPjXEeMh7ux9nDTTfmrW36a/ok83gUA+hmR/X3M0UV5OSp?= =?us-ascii?Q?WoJPTSJMZ3KOLFliZT4lp+A+5Y6dHNIEX6l0UTsubqgxI+CAETHI3hREJqqG?= =?us-ascii?Q?kjP7u4DkmUWrrUiUpXIUWLx/15TkkLhFaapGz0p/pCRTXRTOnqvRjonUo7IR?= =?us-ascii?Q?XkoSmaGwxD+261Gzdl4Td88KmPKJI1NTVAx7wuDs6BWN+Fi3mNCirLLhrIND?= =?us-ascii?Q?csaUIu1ACtksM6qAivcDM3T+ekhanL2dXmtHZ4pJ9s8T4Lquz6IdijRBnLOf?= =?us-ascii?Q?/JJzGquulsexVIlqQlRoJHge+94cuPl0q2H052Wfh1X0bxCzocJi04L2nxgJ?= =?us-ascii?Q?83cUFnhjPE6uRYgisYVwvZh/ZzdexWs4zN/JDU/rm6AORmRlia1L+9mXF7iM?= =?us-ascii?Q?UqDZILvuMhj8h8HuUMljaguDvvdnaeqkOxFI/kbB/Jj6yzAJkE32YA+KW9Dm?= =?us-ascii?Q?taPncK3qRNLAiU0Q5h6BvHfDoUKD0AzFO9ufjo4iGic9yv4XgdWtgMmxU40d?= =?us-ascii?Q?EH0lt5M86RKhZAI50cvgnABONmmJVhoLyCkyzFOzNvysdFrG1ILnrwYBfMw3?= =?us-ascii?Q?8WoVu2Bjcsik3MR4XyBUHCcM9UCUF0ccMeRf6yqORXRih2imjQ0D6fs+DN99?= =?us-ascii?Q?8ysSuuoEea7uuxAix66ZKz5cqTeXuvd4n6IdyiY3ozc/JMxrSKPCyfFc7Prg?= =?us-ascii?Q?GztDkkoDOOym4LeyABqCQ8J//oGnZWo4Yar2uXspiQDhNDZ23gPEQc9SZYzf?= =?us-ascii?Q?z2ivtXlH6T/cf6kFaLgeGw9cIYYbOh9TpfOdf4iwAt3bVaflTrNquLHFK3yV?= =?us-ascii?Q?JA=3D=3D?= X-MS-Exchange-CrossTenant-Network-Message-Id: 5c258db2-b9a0-46b2-823e-08dcec2a26a0 X-MS-Exchange-CrossTenant-AuthSource: LV3PR11MB8603.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 14 Oct 2024 08:28:16.2210 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 46c98d88-e344-4ed4-8496-4ed7712e255d X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: cCt1ztcLhLWPi9RWXDYGzfdWRWCKl1U+5uRdXsbl/UXFSXbV0JMTz76y6V9tNR4Ns/YKVQ7yOkVrHHv3sQMuJQ== X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH8PR11MB6879 X-OriginatorOrg: intel.com Hello, kernel test robot noticed "WARNING:at_kernel/hazptr.c:#hazptr_scan" on: commit: c1508707268498a6fd3ca5853ad65f9482c12374 ("[RFC PATCH v3 4/4] sched+mm: Use hazard pointers to track lazy active mm existence") url: https://github.com/intel-lab-lkp/linux/commits/Mathieu-Desnoyers/compiler-h-Introduce-ptr_eq-to-preserve-address-dependency/20241008-215353 base: https://git.kernel.org/cgit/linux/kernel/git/powerpc/linux.git next patch link: https://lore.kernel.org/all/20241008135034.1982519-5-mathieu.desnoyers@efficios.com/ patch subject: [RFC PATCH v3 4/4] sched+mm: Use hazard pointers to track lazy active mm existence in testcase: boot config: i386-randconfig-013-20241011 compiler: gcc-12 test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 16G (please refer to attached dmesg/kmsg for entire log/backtrace) +-----------------------------------------+------------+------------+ | | b62696cacd | c150870726 | +-----------------------------------------+------------+------------+ | WARNING:at_kernel/hazptr.c:#hazptr_scan | 0 | 5 | | EIP:hazptr_scan | 0 | 5 | +-----------------------------------------+------------+------------+ If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot | Closes: https://lore.kernel.org/oe-lkp/202410141617.612a0f5b-lkp@intel.com [ 6.951355][ T22] ------------[ cut here ]------------ [ 6.951920][ T22] WARNING: CPU: 0 PID: 22 at kernel/hazptr.c:28 hazptr_scan (kernel/hazptr.c:28) [ 6.952580][ T22] Modules linked in: [ 6.952880][ T22] CPU: 0 UID: 0 PID: 22 Comm: khugepaged Not tainted 6.12.0-rc1-00004-gc15087072684 #10 [ 6.953685][ T22] EIP: hazptr_scan (kernel/hazptr.c:28) [ 6.954087][ T22] Code: c0 74 0a 85 db 8b 0a 74 45 39 c8 74 21 5b 5e 5d 31 c0 31 d2 31 c9 c3 8d b4 26 00 00 00 00 f7 05 a4 18 34 c3 ff ff ff 7f 74 14 <0f> 0b eb d1 89 c1 31 c0 ff d3 5b 5e 5d 31 c0 31 d2 31 c9 c3 8b 0d All code ======== 0: c0 74 0a 85 db shlb $0xdb,-0x7b(%rdx,%rcx,1) 5: 8b 0a mov (%rdx),%ecx 7: 74 45 je 0x4e 9: 39 c8 cmp %ecx,%eax b: 74 21 je 0x2e d: 5b pop %rbx e: 5e pop %rsi f: 5d pop %rbp 10: 31 c0 xor %eax,%eax 12: 31 d2 xor %edx,%edx 14: 31 c9 xor %ecx,%ecx 16: c3 ret 17: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi 1e: f7 05 a4 18 34 c3 ff testl $0x7fffffff,-0x3ccbe75c(%rip) # 0xffffffffc33418cc 25: ff ff 7f 28: 74 14 je 0x3e 2a:* 0f 0b ud2 <-- trapping instruction 2c: eb d1 jmp 0xffffffffffffffff 2e: 89 c1 mov %eax,%ecx 30: 31 c0 xor %eax,%eax 32: ff d3 call *%rbx 34: 5b pop %rbx 35: 5e pop %rsi 36: 5d pop %rbp 37: 31 c0 xor %eax,%eax 39: 31 d2 xor %edx,%edx 3b: 31 c9 xor %ecx,%ecx 3d: c3 ret 3e: 8b .byte 0x8b 3f: 0d .byte 0xd Code starting with the faulting instruction =========================================== 0: 0f 0b ud2 2: eb d1 jmp 0xffffffffffffffd5 4: 89 c1 mov %eax,%ecx 6: 31 c0 xor %eax,%eax 8: ff d3 call *%rbx a: 5b pop %rbx b: 5e pop %rsi c: 5d pop %rbp d: 31 c0 xor %eax,%eax f: 31 d2 xor %edx,%edx 11: 31 c9 xor %ecx,%ecx 13: c3 ret 14: 8b .byte 0x8b 15: 0d .byte 0xd [ 6.955564][ T22] EAX: c6087680 EBX: c1061470 ECX: 00000000 EDX: c2e104e8 [ 6.956135][ T22] ESI: c2e104e4 EDI: 00000001 EBP: c42ade88 ESP: c42ade80 [ 6.956665][ T22] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068 EFLAGS: 00010202 [ 6.957266][ T22] CR0: 80050033 CR2: 0819cd10 CR3: 04033d80 CR4: 000406b0 [ 6.957807][ T22] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000 [ 6.958380][ T22] DR6: fffe0ff0 DR7: 00000400 [ 6.958747][ T22] Call Trace: [ 6.959005][ T22] ? show_regs (arch/x86/kernel/dumpstack.c:479) [ 6.959362][ T22] ? hazptr_scan (kernel/hazptr.c:28) [ 6.959694][ T22] ? __warn (kernel/panic.c:748) [ 6.959974][ T22] ? hazptr_scan (kernel/hazptr.c:28) [ 6.960361][ T22] ? hazptr_scan (kernel/hazptr.c:28) [ 6.960695][ T22] ? report_bug (lib/bug.c:180 lib/bug.c:219) [ 6.961083][ T22] ? hazptr_scan (kernel/hazptr.c:28) [ 6.961427][ T22] ? exc_overflow (arch/x86/kernel/traps.c:301) [ 6.961778][ T22] ? handle_bug (arch/x86/kernel/traps.c:260) [ 6.962157][ T22] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) [ 6.962549][ T22] ? thread_stack_free_rcu (kernel/fork.c:867) [ 6.962955][ T22] ? handle_exception (arch/x86/entry/entry_32.S:1047) [ 6.963399][ T22] ? thread_stack_free_rcu (kernel/fork.c:867) [ 6.963801][ T22] ? exc_overflow (arch/x86/kernel/traps.c:301) [ 6.964203][ T22] ? hazptr_scan (kernel/hazptr.c:28) [ 6.964544][ T22] ? exc_overflow (arch/x86/kernel/traps.c:301) [ 6.964895][ T22] ? hazptr_scan (kernel/hazptr.c:28) [ 6.965279][ T22] __mmdrop (kernel/fork.c:895 (discriminator 3)) [ 6.965599][ T22] collect_mm_slot (mm/khugepaged.c:1455) [ 6.965952][ T22] khugepaged_scan_mm_slot+0x210/0x60c [ 6.966493][ T22] ? khugepaged (mm/khugepaged.c:2511 mm/khugepaged.c:2571) [ 6.966865][ T22] khugepaged (mm/khugepaged.c:2515 mm/khugepaged.c:2571) [ 6.967239][ T22] ? _raw_spin_unlock_irqrestore (arch/x86/include/asm/irqflags.h:42 arch/x86/include/asm/irqflags.h:97 arch/x86/include/asm/irqflags.h:155 include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) [ 6.967684][ T22] ? __kthread_parkme (arch/x86/include/asm/bitops.h:206 arch/x86/include/asm/bitops.h:238 include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/kthread.c:280) [ 6.968102][ T22] kthread (kernel/kthread.c:389) [ 6.968400][ T22] ? khugepaged_scan_mm_slot+0x60c/0x60c [ 6.968896][ T22] ? kthread_park (kernel/kthread.c:342) [ 6.969286][ T22] ret_from_fork (arch/x86/kernel/process.c:153) [ 6.969628][ T22] ? kthread_park (kernel/kthread.c:342) [ 6.969961][ T22] ret_from_fork_asm (arch/x86/entry/entry_32.S:737) [ 6.970383][ T22] entry_INT80_32 (arch/x86/entry/entry_32.S:944) [ 6.970758][ T22] irq event stamp: 4719 [ 6.971117][ T22] hardirqs last enabled at (4729): __up_console_sem (arch/x86/include/asm/irqflags.h:42 (discriminator 1) arch/x86/include/asm/irqflags.h:97 (discriminator 1) arch/x86/include/asm/irqflags.h:155 (discriminator 1) kernel/printk/printk.c:344 (discriminator 1)) [ 6.971790][ T22] hardirqs last disabled at (4736): __up_console_sem (kernel/printk/printk.c:342 (discriminator 1)) [ 6.972475][ T22] softirqs last enabled at (4708): handle_softirqs (kernel/softirq.c:401 kernel/softirq.c:582) [ 6.973162][ T22] softirqs last disabled at (4695): __do_softirq (kernel/softirq.c:589) [ 6.973771][ T22] ---[ end trace 0000000000000000 ]--- The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20241014/202410141617.612a0f5b-lkp@intel.com -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki