From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.11]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 82D782D94B0 for ; Tue, 12 Aug 2025 01:59:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=192.198.163.11 ARC-Seal:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754963991; cv=fail; b=qZzrsenCJAMMYPAfgkY/KzjjPVxWPHbq1C1sTfGorD/HhK0EbuPjCqGdWtfb89nz76IGcmjOaGrGTaSafJcBjZ8X4VVe+7TDNrPOWl6rQxCncDKDaKGRwRw8t2tOkIqCJNaUx1Vm5ZPd+hccBxfbfX22zPRkuJCyNabu9DpfiUM= ARC-Message-Signature:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754963991; c=relaxed/simple; bh=4mgo/M7OOHzjZfh4HmT3cmpuGjSpUO5JaSuOPKIeWBQ=; h=Date:From:To:CC:Subject:Message-ID:Content-Type: Content-Disposition:In-Reply-To:MIME-Version; b=aI570uS/ssfmGQZiOGuMGZLH3SpYaq8IQ3bIi8f7+RxhnLgAnzHOmGtuGwn61JNf7VtYQfkIVRsDrNCjBtAVLi2Dd7CXL5x2KNwcgCFOKk7ozO2zo2VS/Q/YW/ZIBs2GHcoPugNtN903OzF9Ig9cj0Izxgx4/6slcccjGwug/IE= ARC-Authentication-Results:i=2; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=ejYntM1+; arc=fail smtp.client-ip=192.198.163.11 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="ejYntM1+" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1754963988; x=1786499988; h=date:from:to:cc:subject:message-id:in-reply-to: mime-version; bh=4mgo/M7OOHzjZfh4HmT3cmpuGjSpUO5JaSuOPKIeWBQ=; b=ejYntM1+deInNeXIIjGm8HB52OOVcSlAcc3/kJYwGdhsIeGL5Pd40JxB pikFhekFVZgnhgYtdrEbNw5lCt0k24B1aJ+evDNOfJ3RV5EpE0OZ/0R5n CZkwP7DknGjcM5AlFLLd769YSxs5P+PdtE+erPCwThz7C/+HVhLJfDiaX BWkDLp2Ov3ci+sOYJD/MUXgdKbsy56OZ4lYfRhXDGj5GcAjwb+9DC3BrJ lHcM293MBrtqMzb5ekdnfiR83WlqL1X6Pzk4cAOW0ROr7waEEeGhZlQfR 7DA/857OhjiM+hucB49PZbRpbA76nPnLEhiXpfj9aY1qXVI2Wh5BQGMMj A==; X-CSE-ConnectionGUID: sV5AANKYR5uAEJ81E2yX/w== X-CSE-MsgGUID: Gu4tIFuxTieYJejYZ0Naiw== X-IronPort-AV: E=McAfee;i="6800,10657,11518"; a="67829098" X-IronPort-AV: E=Sophos;i="6.17,284,1747724400"; d="scan'208";a="67829098" Received: from orviesa001.jf.intel.com ([10.64.159.141]) by fmvoesa105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Aug 2025 18:59:46 -0700 X-CSE-ConnectionGUID: EmrxmqBRQLG3abWwNjifJw== X-CSE-MsgGUID: 8Ug2P0viRmeqIqRarBUHpA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.17,284,1747724400"; d="scan'208";a="203251468" Received: from fmsmsx903.amr.corp.intel.com ([10.18.126.92]) by orviesa001.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Aug 2025 18:59:46 -0700 Received: from FMSMSX902.amr.corp.intel.com (10.18.126.91) by fmsmsx903.amr.corp.intel.com (10.18.126.92) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1748.26; Mon, 11 Aug 2025 18:59:45 -0700 Received: from fmsedg903.ED.cps.intel.com (10.1.192.145) by FMSMSX902.amr.corp.intel.com (10.18.126.91) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1748.26 via Frontend Transport; Mon, 11 Aug 2025 18:59:45 -0700 Received: from NAM02-SN1-obe.outbound.protection.outlook.com (40.107.96.89) by edgegateway.intel.com (192.55.55.83) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1748.26; Mon, 11 Aug 2025 18:59:44 -0700 ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=oUdVflHZxKPRmSQL4bNYcly77K65iq2k8J7pB+R1A7OgdOmmFm68ojSybWcQtXv6ot4cfE/6xMjpPufML+zKdCiKSBNtXbKJ3gTzKj//nbPRvK/t+Ca1xC0YmsYaXVdkNZl0EKNaun9d3ODPSF4js5Vp8SCpuhkPsQAqSOICo7kxWu1L1eUrd459hBLaE63E01lkezXBRiWOK11qFngAMBZVn4N/kjkMD6tOplHcNn8LxMQiBgNcUS/qH5c1j2SbQRWtuCD6fCkI6VatyywoYNCyGs9LX1dF1FTGNjqvnfXOLyi3oqCGsqtyJUJLOIvDvHaOaS1uFUoL0dKimv3fCg== 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=or9NLJk/0masxfPTlQTXvkD5CsaBvmqI1ii4XqFZqQg=; b=ZZYjbdlhAoW47Wm/s+t9TooXutstm1pMqspep/i8Wo2PlY+KQbKUnFkFb4xKMxXafKc2d2nchwUIQ/zfEPk/NzKH21W0K+wZhanK2FFNedutAdJEHH7mnjD/8CBp9jbz4IF5UQLgwlbNIvM3tnHWf47quW9x1+obla9JV2HUKC2kRUaJQRPn8RoPV+OqsWXRoTpfhG3iZVsPUU7/HSTkLRe0W3q9hS9nT9QXYgk3wYCLs9G+EEWw9uxFg0Yhjj+pxWqBwyK159fmsX2qU6L87AV+l35TnHK/EZoLMEJI/ONLd/t7FbX95prIgjM8zcgm4ZmRG3JFY07o7iAhNwUnEQ== 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 LV2PR11MB6070.namprd11.prod.outlook.com (2603:10b6:408:179::22) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9009.21; Tue, 12 Aug 2025 01:59:42 +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 15.20.9009.018; Tue, 12 Aug 2025 01:59:42 +0000 Date: Tue, 12 Aug 2025 09:59:26 +0800 From: kernel test robot To: Chen Yu CC: , , Jianyong Wu , Shrikanth Hegde , Tim Chen , , , , Peter Zijlstra , Ingo Molnar , K Prateek Nayak , "Gautham R . Shenoy" , Vincent Guittot , Juri Lelli , Dietmar Eggemann , "Steven Rostedt" , Ben Segall , Mel Gorman , Valentin Schneider , Libo Chen , Madadi Vineeth Reddy , "Hillf Danton" , Yangyu Chen , Tingyin Duan , Vern Hao , Len Brown , Aubrey Li , Zhao Liu , Chen Yu , Subject: Re: [RFC PATCH v4 23/28] sched: Scan a task's preferred node for preferred LLC Message-ID: <202508120315.19f6266a-lkp@intel.com> Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: <178bf43d7cbc9b2c9aea408dd56b87391067df37.1754712565.git.tim.c.chen@linux.intel.com> X-ClientProxiedBy: SI1PR02CA0009.apcprd02.prod.outlook.com (2603:1096:4:1f7::10) To LV3PR11MB8603.namprd11.prod.outlook.com (2603:10b6:408:1b6::9) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: LV3PR11MB8603:EE_|LV2PR11MB6070:EE_ X-MS-Office365-Filtering-Correlation-Id: fb02b23a-172b-4ec7-a969-08ddd943e6fd 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?PUBxJP0XJ/vHR6b9xTz4+lFdc5f7xAQan1XRGvRkM51lFOCbLKpsrALF+n2V?= =?us-ascii?Q?zB/BBJwqR9PSrXQGSKL8f4mT4rZW83TT+yixZfrVsSsb2TK9QrdsHfu9LVwS?= =?us-ascii?Q?Qn8867NbGAqFoYs0bt7b/parGdIvAbzuredCqzs4F7ylcJFswvyfCQqhs5VX?= =?us-ascii?Q?c4CCrUpY/29Oi00ia6qjth8qQessq5mUEfAnW4pCZB7+uhM4U5SNrFLf/bg4?= =?us-ascii?Q?I5RP/kRa7OaTNAog9HCGHdrzDNyonvfkpbvGLuYgiHgCFLVTFDdPVPW8AW8/?= =?us-ascii?Q?YosaXq7R+pKJGomMNqL5jryFXociXmcteyQgmgu3DHDJIBloqXmAAWMqbjFN?= =?us-ascii?Q?bVS/ws/VBDO73IKb3/RZcePfjNVaYExGMYCPvnkZv/LgpkOLkPf2iUiYtlWM?= =?us-ascii?Q?Hm4HMYgS1Yo921uhyHo6AAOmeeRHWW/8VXd0sm6GQV3zn3VffA3hYEB3mZiW?= =?us-ascii?Q?SZ7c/ZOIDqU4nuiF5wxzFUmuAVfTi4Iy93I5xSBUkHPwsLOlhVLCo7FGJKYq?= =?us-ascii?Q?6uCXKnFe5BK6DFmCCLKTPLGGHE9AWTZOZx90fwpr64h+LLDltp3EB0d19hbG?= =?us-ascii?Q?rRID6ku3X+rb3kV15mG984XL+9DGDjoIxH7t0yeFD6m3bzs2XAgiIcPIBXzu?= =?us-ascii?Q?LolBuEm19pkd/lPhy0XQEfKcVvCQSH2jPGHI7wqE+SQQHudodQ09gQG/uN2k?= =?us-ascii?Q?52Tj+xS+xyMxAwgNxgJS3Usfq800/V7BXxtvSAKeIjbSyOhKTj/NkRIDnjJl?= =?us-ascii?Q?1e5BGijbDfJ5CNQ+A06Wblpw2TSBfy8hAcvHOLLjMkplpdkTEiSHQ3M1fFvW?= =?us-ascii?Q?B62MSisJk4XH0bK6tOpNFwa0ieqREA/f4+QVrQNS1Ec/UFmyd1/7aY1ovYQU?= =?us-ascii?Q?A39EjE4bMYy1u1fFVyPMGxqXnMpALxlWQyNzuAQzw72sOxSsXeT811BSebRH?= =?us-ascii?Q?TwWHV0I7gskiJ56yEIG5T6nlMp4+vLGH1t62+q1rK9NQigYaKsEnaekUe2PF?= =?us-ascii?Q?45Sxfmt6BnZL/hjYCgP6YB8wCVscV2tJfY9pf4d6spq2WocSPC5PtnBn7cU5?= =?us-ascii?Q?HK8q63r0ISYiTAF8QTzgxSqPPAwqqE0gdOS7XBYsQ0svaxrJdMTnDjPAP8xC?= =?us-ascii?Q?tKrUjvWhH5hSX3ACtUUzkH4w4DRAmXQIC54qBnExNVviwbr5hquYmvZO1R9v?= =?us-ascii?Q?F3kMq5la0xGLQBeiYVZrVPgjV/nhg4SXlp54SRwCIrUF7haFsI384l4AbZrC?= =?us-ascii?Q?8d8W/7C3nbLcctKi5pSMjVlOW34ZQAC1r+sCPklxHYjJgzrt++cpMFlBmz9B?= =?us-ascii?Q?Kun6hQ+IvZtJxnfBk3vMCVnx9OAX8sdMryMLepkZ8cZe9rb31CptcNA3gBQK?= =?us-ascii?Q?yMGaD6IV2ePIucZS3hkOn+nK948w?= 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?wOmIyc30Pz6ISOjc/89Y+Cu1Ze0m9wiJ83uKu8848ICC0NyMVmv7LkoYz2rn?= =?us-ascii?Q?h158t5zcGGF8vevZZpNKQ6XRNjUAxXiZbmdKUB/lkFcRFRz5J0eLi2dCNr3A?= =?us-ascii?Q?qmwYjWI030BEruz3YhSOAH5vYERbT92Cx62Kuz26br0/oTRc8rZaT75IQDFz?= =?us-ascii?Q?AN3Q6vy1VkNKUdzbocQmdxXBDGr9ueHMvizG1EM1rUAlZ/juVsWTOVjgBHPY?= =?us-ascii?Q?mGKzXRPGVwRHaJwElk7JdGtG7+TSm5Fdw6B7WcMSQkdOle5mvzyx2q6cc7lK?= =?us-ascii?Q?3Vf+WXZ2HMgcTJCu137lPfDI6wcz9eTq8ldHk8yRu/NJlA8Jq0b1BODjog7F?= =?us-ascii?Q?cfl8N+NYBPbMfFH2cyKg0w9UZODrafAdlugolnNM3dd0UX9rMDIYaduiVTd6?= =?us-ascii?Q?0k0lw7CxQWOazDp3NR4jdlgJEYp475NO570yRP7YR8y7dgy2kl+BfqA30PDU?= =?us-ascii?Q?JaUU+nF0BLEy8iuNcykr/HPKrBRezeiNuqAqivLZ1hgjsHjB6zD6y8hKa8g9?= =?us-ascii?Q?8cew4ah5HyTfISemTd/uI2jyU3GiIBPeT5wiFeZUojZQQoc3wK55bSIMl7TA?= =?us-ascii?Q?AOOyoDtiXeJzHGkObSTQRJ4Qf+q4y2OwszYaw0QPtzXM/esio2MHLAxziYp2?= =?us-ascii?Q?dQ8SqVUixqQUFmhlvWVT21RJDPk4Oz9nMQmmx8n1pqIxvUM+PzHFUDX738TV?= =?us-ascii?Q?64D6uW51aFe67HuK9wZTdrPgkJvwG2oadD4ZGqxjrWF/YS9tn+060vTi3Nuu?= =?us-ascii?Q?BYanZ3LhAhkACTQ3MgP0rA6kZcCpDr8UVJ2gD+UsSr/HHHjamkzt5rmMI2CX?= =?us-ascii?Q?w6SSPP0+nYBNiqf3a2zpDB3yrVTEDB2vUN9QaRIUmssc/pwg0T0grC1FsFfN?= =?us-ascii?Q?QqXBuYHq1I9DnK40oV9ZqVNo4PA28ZIbyTK+D0s1b6yEHJMc6qqe2b1YZ9uA?= =?us-ascii?Q?3jRTusZMBiDqa9ceV4n2cnF3r1zIHT/4Ic3Ucd30ku8DBzknIf1b9u6R/8N1?= =?us-ascii?Q?uohk9KDdAiLFBkv6Z0j3EmqgzrWJeC6WyP69O5ZD6ZBp4L33EtabUSfPb0nm?= =?us-ascii?Q?Kx3PtR3u7KlouVQNwXSJOehCJ5R2uwrKsGhdeDQLH5aMsTkMvSEJ8t30ovE5?= =?us-ascii?Q?+3H0M+HdAYppyP3AHOB6MdfnUYXVneY6T9/cBRvALm85ckfzhFHa/Gc9BRpW?= =?us-ascii?Q?D/ct+BpK9GqF7gjr/TU5k/U+s62I5SC3g0qHWLkh9fFxquzLfDsP5S+CD2DW?= =?us-ascii?Q?ApJp5/5G507y4azskCBlN7kuV/SC+z+6KWFxWQ5QMwa6WUy3BZ+ByoxKNRWi?= =?us-ascii?Q?Bn546qJSa9eNKYTt3R8SPJqxwP8fUqLK3oRNZbqWHzvuAP/ZPLdCqQy9FAmy?= =?us-ascii?Q?/dIqfXIWu6aV3N5tTzqwNne5goj4+2N0nDqTPWE81x0+ihfdu4pPcK/BSiX7?= =?us-ascii?Q?xA1cLNFD8vA2wGQ989kTY3S2UmlX28f3e3N9mIA3QY5ZlG/cR3nAO3RXKfUw?= =?us-ascii?Q?L3PFvtTGufsz0AKKIQVpqgW+z6ZRdB4dlIlNE09E2gs3SFH44OGAvgjgpiK2?= =?us-ascii?Q?qCiNNoPkMqCpKjhI1RI9c7AlcHqQs4QUfko4hj81KT2GyxiT9jM4DgzhMSYs?= =?us-ascii?Q?FA=3D=3D?= X-MS-Exchange-CrossTenant-Network-Message-Id: fb02b23a-172b-4ec7-a969-08ddd943e6fd X-MS-Exchange-CrossTenant-AuthSource: LV3PR11MB8603.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 12 Aug 2025 01:59:42.3375 (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: /jqkBpKHwNGexrome/tP1E4yTrafeR1R7/rJzQtehIRf7JjbBOKf+bfzvVmR1BQr/bv0ZSCsBTFA4tXpWzFOdA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: LV2PR11MB6070 X-OriginatorOrg: intel.com Hello, kernel test robot noticed "BUG:using_smp_processor_id()in_preemptible" on: commit: ff797757d658ecda432e4c33c0cfc2b704af2b06 ("[RFC PATCH v4 23/28] sched: Scan a task's preferred node for preferred LLC") url: https://github.com/intel-lab-lkp/linux/commits/Chen-Yu/sched-Cache-aware-load-balancing/20250809-131716 base: v6.16 patch link: https://lore.kernel.org/all/178bf43d7cbc9b2c9aea408dd56b87391067df37.1754712565.git.tim.c.chen@linux.intel.com/ patch subject: [RFC PATCH v4 23/28] sched: Scan a task's preferred node for preferred LLC in testcase: boot config: x86_64-randconfig-103-20250810 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) +------------------------------------------------------+------------+------------+ | | 552a2db758 | ff797757d6 | +------------------------------------------------------+------------+------------+ | BUG:using_smp_processor_id()in_preemptible | 0 | 11 | +------------------------------------------------------+------------+------------+ 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/202508120315.19f6266a-lkp@intel.com [ 19.177186][ T64] BUG: using smp_processor_id() in preemptible [00000000] code: modprobe/64 [ 19.179622][ T64] caller is debug_smp_processor_id (lib/smp_processor_id.c:61) [ 19.181347][ T64] CPU: 0 UID: 0 PID: 64 Comm: modprobe Not tainted 6.16.0-00023-gff797757d658 #1 PREEMPT(none) [ 19.181372][ T64] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 [ 19.181385][ T64] Call Trace: [ 19.181391][ T64] [ 19.181401][ T64] dump_stack_lvl (lib/dump_stack.c:123) [ 19.181440][ T64] dump_stack (lib/dump_stack.c:130) [ 19.181465][ T64] check_preemption_disabled (arch/x86/include/asm/preempt.h:85 lib/smp_processor_id.c:53) [ 19.181494][ T64] debug_smp_processor_id (lib/smp_processor_id.c:61) [ 19.181514][ T64] task_cache_work (kernel/sched/fair.c:1422) [ 19.181531][ T64] ? __this_cpu_preempt_check (lib/smp_processor_id.c:67) [ 19.181569][ T64] ? lock_is_held (include/linux/lockdep.h:249) [ 19.181594][ T64] ? _raw_spin_unlock_irq (arch/x86/include/asm/paravirt.h:671 include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) [ 19.181626][ T64] ? __pfx_task_cache_work (kernel/sched/fair.c:1416) [ 19.181642][ T64] ? __this_cpu_preempt_check (lib/smp_processor_id.c:67) [ 19.181663][ T64] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) [ 19.181697][ T64] task_work_run (kernel/task_work.c:228 (discriminator 1)) [ 19.181724][ T64] ? __pfx_task_work_run (kernel/task_work.c:195) [ 19.181747][ T64] ? preempt_latency_start (include/linux/ftrace.h:1091 kernel/sched/core.c:5866) [ 19.181782][ T64] resume_user_mode_work (arch/x86/include/asm/current.h:25 include/linux/resume_user_mode.h:53) [ 19.181817][ T64] irqentry_exit_to_user_mode (kernel/entry/common.c:124 include/linux/entry-common.h:330 kernel/entry/common.c:184) [ 19.181843][ T64] irqentry_exit (kernel/entry/common.c:287) [ 19.181862][ T64] exc_page_fault (arch/x86/mm/fault.c:1536) [ 19.181898][ T64] asm_exc_page_fault (arch/x86/include/asm/idtentry.h:623) [ 19.181916][ T64] RIP: 0023:0xf7ee9067 [ 19.181933][ T64] Code: fe ff ff 8b 00 85 c0 0f 84 96 00 00 00 8b 8d 60 fe ff ff 8b 51 30 85 d2 74 03 01 42 04 8b 8d 60 fe ff ff 8b 51 2c 85 d2 74 03 <01> 42 04 8b bd 60 fe ff ff 8b 57 34 85 d2 74 03 01 42 04 8b 8d 60 All code ======== 0: fe (bad) 1: ff (bad) 2: ff 8b 00 85 c0 0f decl 0xfc08500(%rbx) 8: 84 96 00 00 00 8b test %dl,-0x75000000(%rsi) e: 8d 60 fe lea -0x2(%rax),%esp 11: ff (bad) 12: ff 8b 51 30 85 d2 decl -0x2d7acfaf(%rbx) 18: 74 03 je 0x1d 1a: 01 42 04 add %eax,0x4(%rdx) 1d: 8b 8d 60 fe ff ff mov -0x1a0(%rbp),%ecx 23: 8b 51 2c mov 0x2c(%rcx),%edx 26: 85 d2 test %edx,%edx 28: 74 03 je 0x2d 2a:* 01 42 04 add %eax,0x4(%rdx) <-- trapping instruction 2d: 8b bd 60 fe ff ff mov -0x1a0(%rbp),%edi 33: 8b 57 34 mov 0x34(%rdi),%edx 36: 85 d2 test %edx,%edx 38: 74 03 je 0x3d 3a: 01 42 04 add %eax,0x4(%rdx) 3d: 8b .byte 0x8b 3e: 8d .byte 0x8d 3f: 60 (bad) Code starting with the faulting instruction =========================================== 0: 01 42 04 add %eax,0x4(%rdx) 3: 8b bd 60 fe ff ff mov -0x1a0(%rbp),%edi 9: 8b 57 34 mov 0x34(%rdi),%edx c: 85 d2 test %edx,%edx e: 74 03 je 0x13 10: 01 42 04 add %eax,0x4(%rdx) 13: 8b .byte 0x8b 14: 8d .byte 0x8d 15: 60 (bad) [ 19.181949][ T64] RSP: 002b:00000000fffd59c0 EFLAGS: 00010206 [ 19.181966][ T64] RAX: 00000000565ad000 RBX: 0000000000000001 RCX: 00000000f7f11980 [ 19.181978][ T64] RDX: 00000000565dbd44 RSI: 00000000effffef5 RDI: 000000006fffffff [ 19.181990][ T64] RBP: 00000000fffd5bb8 R08: 0000000000000000 R09: 0000000000000000 [ 19.182001][ T64] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 19.182013][ T64] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 19.182063][ T64] [ 19.230078][ T64] BUG: using smp_processor_id() in preemptible [00000000] code: modprobe/64 [ 19.230948][ T64] caller is debug_smp_processor_id (lib/smp_processor_id.c:61) [ 19.231549][ T64] CPU: 0 UID: 0 PID: 64 Comm: modprobe Not tainted 6.16.0-00023-gff797757d658 #1 PREEMPT(none) [ 19.231557][ T64] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 [ 19.231561][ T64] Call Trace: [ 19.231564][ T64] [ 19.231567][ T64] dump_stack_lvl (lib/dump_stack.c:123) [ 19.231580][ T64] dump_stack (lib/dump_stack.c:130) [ 19.231588][ T64] check_preemption_disabled (arch/x86/include/asm/preempt.h:85 lib/smp_processor_id.c:53) [ 19.231598][ T64] debug_smp_processor_id (lib/smp_processor_id.c:61) [ 19.231604][ T64] task_cache_work (kernel/sched/fair.c:1422) [ 19.231615][ T64] ? find_held_lock (kernel/locking/lockdep.c:5353) [ 19.231627][ T64] ? _raw_spin_unlock_irq (arch/x86/include/asm/paravirt.h:671 include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) [ 19.231637][ T64] ? __pfx_task_cache_work (kernel/sched/fair.c:1416) [ 19.231643][ T64] ? __this_cpu_preempt_check (lib/smp_processor_id.c:67) [ 19.231649][ T64] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) [ 19.231659][ T64] task_work_run (kernel/task_work.c:228 (discriminator 1)) [ 19.231668][ T64] ? __pfx_task_work_run (kernel/task_work.c:195) [ 19.231680][ T64] resume_user_mode_work (arch/x86/include/asm/current.h:25 include/linux/resume_user_mode.h:53) [ 19.231691][ T64] irqentry_exit_to_user_mode (kernel/entry/common.c:124 include/linux/entry-common.h:330 kernel/entry/common.c:184) [ 19.231699][ T64] irqentry_exit (kernel/entry/common.c:287) [ 19.231705][ T64] exc_page_fault (arch/x86/mm/fault.c:1536) [ 19.231717][ T64] asm_exc_page_fault (arch/x86/include/asm/idtentry.h:623) [ 19.231723][ T64] RIP: 0023:0xf7f03797 [ 19.231729][ T64] Code: 24 0c e3 2c 89 d7 83 e2 03 74 11 7a 04 aa 49 74 1f aa 49 74 1b 83 f2 01 75 02 aa 49 89 ca c1 e9 02 83 e2 03 69 c0 01 01 01 01 ab 89 d1 f3 aa 8b 44 24 08 5f c3 66 90 66 90 66 90 66 90 66 90 All code ======== 0: 24 0c and $0xc,%al 2: e3 2c jrcxz 0x30 4: 89 d7 mov %edx,%edi 6: 83 e2 03 and $0x3,%edx 9: 74 11 je 0x1c b: 7a 04 jp 0x11 d: aa stos %al,%es:(%rdi) e: 49 74 1f rex.WB je 0x30 11: aa stos %al,%es:(%rdi) 12: 49 74 1b rex.WB je 0x30 15: 83 f2 01 xor $0x1,%edx 18: 75 02 jne 0x1c 1a: aa stos %al,%es:(%rdi) 1b: 49 89 ca mov %rcx,%r10 1e: c1 e9 02 shr $0x2,%ecx 21: 83 e2 03 and $0x3,%edx 24: 69 c0 01 01 01 01 imul $0x1010101,%eax,%eax 2a:* f3 ab rep stos %eax,%es:(%rdi) <-- trapping instruction 2c: 89 d1 mov %edx,%ecx 2e: f3 aa rep stos %al,%es:(%rdi) 30: 8b 44 24 08 mov 0x8(%rsp),%eax 34: 5f pop %rdi 35: c3 ret 36: 66 90 xchg %ax,%ax 38: 66 90 xchg %ax,%ax 3a: 66 90 xchg %ax,%ax 3c: 66 90 xchg %ax,%ax 3e: 66 90 xchg %ax,%ax Code starting with the faulting instruction =========================================== 0: f3 ab rep stos %eax,%es:(%rdi) 2: 89 d1 mov %edx,%ecx 4: f3 aa rep stos %al,%es:(%rdi) 6: 8b 44 24 08 mov 0x8(%rsp),%eax a: 5f pop %rdi b: c3 ret c: 66 90 xchg %ax,%ax e: 66 90 xchg %ax,%ax 10: 66 90 xchg %ax,%ax 12: 66 90 xchg %ax,%ax 14: 66 90 xchg %ax,%ax [ 19.231735][ T64] RSP: 002b:00000000fffd4f58 EFLAGS: 00010206 [ 19.231741][ T64] RAX: 0000000000000000 RBX: 00000000f7f11000 RCX: 0000000000000001 [ 19.231745][ T64] RDX: 0000000000000000 RSI: 00000000f7edf148 RDI: 00000000f7edf144 [ 19.231749][ T64] RBP: 00000000fffd5138 R08: 0000000000000000 R09: 0000000000000000 [ 19.231753][ T64] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 19.231756][ T64] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 19.231771][ T64] [ 19.251371][ T64] BUG: using smp_processor_id() in preemptible [00000000] code: modprobe/64 [ 19.252249][ T64] caller is debug_smp_processor_id (lib/smp_processor_id.c:61) [ 19.252877][ T64] CPU: 0 UID: 0 PID: 64 Comm: modprobe Not tainted 6.16.0-00023-gff797757d658 #1 PREEMPT(none) [ 19.252886][ T64] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 [ 19.252890][ T64] Call Trace: [ 19.252892][ T64] [ 19.252895][ T64] dump_stack_lvl (lib/dump_stack.c:123) [ 19.252907][ T64] dump_stack (lib/dump_stack.c:130) [ 19.252916][ T64] check_preemption_disabled (arch/x86/include/asm/preempt.h:85 lib/smp_processor_id.c:53) [ 19.252925][ T64] debug_smp_processor_id (lib/smp_processor_id.c:61) [ 19.252931][ T64] task_cache_work (kernel/sched/fair.c:1422) [ 19.252941][ T64] ? find_held_lock (kernel/locking/lockdep.c:5353) [ 19.252953][ T64] ? _raw_spin_unlock_irq (arch/x86/include/asm/paravirt.h:671 include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) [ 19.252963][ T64] ? __pfx_task_cache_work (kernel/sched/fair.c:1416) [ 19.252969][ T64] ? __this_cpu_preempt_check (lib/smp_processor_id.c:67) [ 19.252976][ T64] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) [ 19.252985][ T64] task_work_run (kernel/task_work.c:228 (discriminator 1)) [ 19.252994][ T64] ? __pfx_task_work_run (kernel/task_work.c:195) [ 19.253006][ T64] resume_user_mode_work (arch/x86/include/asm/current.h:25 include/linux/resume_user_mode.h:53) [ 19.253018][ T64] exit_to_user_mode_loop (kernel/entry/common.c:124) [ 19.253025][ T64] do_int80_emulation (include/linux/entry-common.h:332 include/linux/entry-common.h:414 include/linux/entry-common.h:449 arch/x86/entry/syscall_32.c:175) [ 19.253035][ T64] ? find_held_lock (kernel/locking/lockdep.c:5353) [ 19.253044][ T64] ? preempt_latency_start (include/linux/ftrace.h:1091 kernel/sched/core.c:5866) [ 19.253055][ T64] ? __up_write (arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) [ 19.253061][ T64] ? __this_cpu_preempt_check (lib/smp_processor_id.c:67) [ 19.253070][ T64] ? validate_chain (kernel/locking/lockdep.c:3826 kernel/locking/lockdep.c:3879) [ 19.253081][ T64] ? __lock_acquire (kernel/locking/lockdep.c:5240) [ 19.253093][ T64] ? find_held_lock (kernel/locking/lockdep.c:5353) [ 19.253106][ T64] ? validate_chain (kernel/locking/lockdep.c:3826 kernel/locking/lockdep.c:3879) [ 19.253117][ T64] ? __lock_acquire (kernel/locking/lockdep.c:5240) [ 19.253128][ T64] ? find_held_lock (kernel/locking/lockdep.c:5353) [ 19.253138][ T64] ? vtime_user_exit (kernel/sched/cputime.c:737) [ 19.253149][ T64] ? vtime_user_exit (kernel/sched/cputime.c:737) [ 19.253159][ T64] ? __this_cpu_preempt_check (lib/smp_processor_id.c:67) [ 19.253170][ T64] ? debug_smp_processor_id (lib/smp_processor_id.c:61) [ 19.253177][ T64] ? rcu_is_watching (include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) [ 19.253185][ T64] ? trace_irq_disable (include/trace/events/preemptirq.h:36 (discriminator 21)) [ 19.253195][ T64] ? trace_hardirqs_off_finish (kernel/trace/trace_preemptirq.c:98) [ 19.253203][ T64] ? do_int80_emulation (arch/x86/include/asm/jump_label.h:36 arch/x86/entry/syscall_32.c:148) [ 19.253212][ T64] asm_int80_emulation (arch/x86/include/asm/idtentry.h:626) [ 19.253218][ T64] RIP: 0023:0xf7f02cb0 [ 19.253223][ T64] Code: 4c 24 34 89 44 24 0c 8b 44 24 44 8b 54 24 38 8b 74 24 3c 8b 7c 24 40 a9 ff 0f 00 00 75 1c c1 e8 0c 89 c5 b8 c0 00 00 00 cd 80 <3d> 00 f0 ff ff 77 21 83 c4 1c 5b 5e 5f 5d c3 90 83 c4 1c b8 ea ff All code ======== 0: 4c 24 34 rex.WR and $0x34,%al 3: 89 44 24 0c mov %eax,0xc(%rsp) 7: 8b 44 24 44 mov 0x44(%rsp),%eax b: 8b 54 24 38 mov 0x38(%rsp),%edx f: 8b 74 24 3c mov 0x3c(%rsp),%esi 13: 8b 7c 24 40 mov 0x40(%rsp),%edi 17: a9 ff 0f 00 00 test $0xfff,%eax 1c: 75 1c jne 0x3a 1e: c1 e8 0c shr $0xc,%eax 21: 89 c5 mov %eax,%ebp 23: b8 c0 00 00 00 mov $0xc0,%eax 28: cd 80 int $0x80 2a:* 3d 00 f0 ff ff cmp $0xfffff000,%eax <-- trapping instruction 2f: 77 21 ja 0x52 31: 83 c4 1c add $0x1c,%esp 34: 5b pop %rbx 35: 5e pop %rsi 36: 5f pop %rdi 37: 5d pop %rbp 38: c3 ret 39: 90 nop 3a: 83 c4 1c add $0x1c,%esp 3d: b8 .byte 0xb8 3e: ea (bad) 3f: ff .byte 0xff Code starting with the faulting instruction =========================================== 0: 3d 00 f0 ff ff cmp $0xfffff000,%eax 5: 77 21 ja 0x28 7: 83 c4 1c add $0x1c,%esp a: 5b pop %rbx b: 5e pop %rsi c: 5f pop %rdi d: 5d pop %rbp e: c3 ret f: 90 nop 10: 83 c4 1c add $0x1c,%esp 13: b8 .byte 0xb8 14: ea (bad) 15: ff .byte 0xff [ 19.253229][ T64] RSP: 002b:00000000fffd4f00 EFLAGS: 00000202 ORIG_RAX: 00000000000000c0 [ 19.253236][ T64] RAX: 00000000f7db9000 RBX: 00000000f7db9000 RCX: 00000000000da000 [ 19.253240][ T64] RDX: 0000000000000001 RSI: 0000000000000812 RDI: 0000000000000000 [ 19.253244][ T64] RBP: 00000000000001ce R08: 0000000000000000 R09: 0000000000000000 [ 19.253248][ T64] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 19.253251][ T64] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 19.253266][ T64] [ 19.256786][ T64] BUG: using smp_processor_id() in preemptible [00000000] code: modprobe/64 [ 19.304780][ T64] caller is debug_smp_processor_id (lib/smp_processor_id.c:61) [ 19.305760][ T64] CPU: 1 UID: 0 PID: 64 Comm: modprobe Not tainted 6.16.0-00023-gff797757d658 #1 PREEMPT(none) [ 19.305774][ T64] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 [ 19.305782][ T64] Call Trace: [ 19.305787][ T64] [ 19.305795][ T64] dump_stack_lvl (lib/dump_stack.c:123) [ 19.305817][ T64] dump_stack (lib/dump_stack.c:130) [ 19.305832][ T64] check_preemption_disabled (arch/x86/include/asm/preempt.h:85 lib/smp_processor_id.c:53) [ 19.305849][ T64] debug_smp_processor_id (lib/smp_processor_id.c:61) [ 19.305862][ T64] task_cache_work (kernel/sched/fair.c:1422) [ 19.305881][ T64] ? find_held_lock (kernel/locking/lockdep.c:5353) [ 19.305903][ T64] ? _raw_spin_unlock_irq (arch/x86/include/asm/paravirt.h:671 include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) [ 19.305921][ T64] ? __pfx_task_cache_work (kernel/sched/fair.c:1416) [ 19.305931][ T64] ? __this_cpu_preempt_check (lib/smp_processor_id.c:67) [ 19.305944][ T64] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) [ 19.305962][ T64] task_work_run (kernel/task_work.c:228 (discriminator 1)) [ 19.305980][ T64] ? __pfx_task_work_run (kernel/task_work.c:195) [ 19.306002][ T64] resume_user_mode_work (arch/x86/include/asm/current.h:25 include/linux/resume_user_mode.h:53) [ 19.306023][ T64] irqentry_exit_to_user_mode (kernel/entry/common.c:124 include/linux/entry-common.h:330 kernel/entry/common.c:184) [ 19.306039][ T64] irqentry_exit (kernel/entry/common.c:287) [ 19.306050][ T64] exc_page_fault (arch/x86/mm/fault.c:1536) [ 19.306072][ T64] asm_exc_page_fault (arch/x86/include/asm/idtentry.h:623) [ 19.306083][ T64] RIP: 0023:0xf7db80cb [ 19.306094][ T64] Code: 01 00 00 00 83 c4 08 5b c3 66 90 66 90 66 90 55 53 56 57 31 d2 9c 58 89 c1 35 00 00 20 00 50 9d 9c 58 31 c1 31 c0 8b 74 24 14 <89> 46 08 0f ba e1 15 0f 83 6b 01 00 00 0f a2 89 c7 31 c0 81 fb 47 All code ======== 0: 01 00 add %eax,(%rax) 2: 00 00 add %al,(%rax) 4: 83 c4 08 add $0x8,%esp 7: 5b pop %rbx 8: c3 ret 9: 66 90 xchg %ax,%ax b: 66 90 xchg %ax,%ax d: 66 90 xchg %ax,%ax f: 55 push %rbp 10: 53 push %rbx 11: 56 push %rsi 12: 57 push %rdi 13: 31 d2 xor %edx,%edx 15: 9c pushf 16: 58 pop %rax 17: 89 c1 mov %eax,%ecx 19: 35 00 00 20 00 xor $0x200000,%eax 1e: 50 push %rax 1f: 9d popf 20: 9c pushf 21: 58 pop %rax 22: 31 c1 xor %eax,%ecx 24: 31 c0 xor %eax,%eax 26: 8b 74 24 14 mov 0x14(%rsp),%esi 2a:* 89 46 08 mov %eax,0x8(%rsi) <-- trapping instruction 2d: 0f ba e1 15 bt $0x15,%ecx 31: 0f 83 6b 01 00 00 jae 0x1a2 37: 0f a2 cpuid 39: 89 c7 mov %eax,%edi 3b: 31 c0 xor %eax,%eax 3d: 81 .byte 0x81 3e: fb sti 3f: 47 rex.RXB Code starting with the faulting instruction =========================================== 0: 89 46 08 mov %eax,0x8(%rsi) 3: 0f ba e1 15 bt $0x15,%ecx 7: 0f 83 6b 01 00 00 jae 0x178 d: 0f a2 cpuid f: 89 c7 mov %eax,%edi 11: 31 c0 xor %eax,%eax 13: 81 .byte 0x81 14: fb sti 15: 47 rex.RXB [ 19.306104][ T64] RSP: 002b:00000000fffd5bd8 EFLAGS: 00210246 [ 19.306115][ T64] RAX: 0000000000000000 RBX: 00000000f7eac684 RCX: 0000000000200000 [ 19.306123][ T64] RDX: 0000000000000000 RSI: 00000000f7eb3ad0 RDI: 00000000f7eb3ad0 [ 19.306131][ T64] RBP: 00000000f7eac684 R08: 0000000000000000 R09: 0000000000000000 [ 19.306138][ T64] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 19.306145][ T64] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 19.306175][ T64] [ 19.328981][ T64] BUG: using smp_processor_id() in preemptible [00000000] code: modprobe/64 [ 19.329865][ T64] caller is debug_smp_processor_id (lib/smp_processor_id.c:61) [ 19.330477][ T64] CPU: 1 UID: 0 PID: 64 Comm: modprobe Not tainted 6.16.0-00023-gff797757d658 #1 PREEMPT(none) [ 19.330486][ T64] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 [ 19.330490][ T64] Call Trace: [ 19.330492][ T64] [ 19.330495][ T64] dump_stack_lvl (lib/dump_stack.c:123) [ 19.330508][ T64] dump_stack (lib/dump_stack.c:130) [ 19.330516][ T64] check_preemption_disabled (arch/x86/include/asm/preempt.h:85 lib/smp_processor_id.c:53) [ 19.330525][ T64] debug_smp_processor_id (lib/smp_processor_id.c:61) [ 19.330531][ T64] task_cache_work (kernel/sched/fair.c:1422) [ 19.330541][ T64] ? find_held_lock (kernel/locking/lockdep.c:5353) [ 19.330553][ T64] ? _raw_spin_unlock_irq (arch/x86/include/asm/paravirt.h:671 include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) [ 19.330564][ T64] ? __pfx_task_cache_work (kernel/sched/fair.c:1416) [ 19.330569][ T64] ? __this_cpu_preempt_check (lib/smp_processor_id.c:67) [ 19.330576][ T64] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) [ 19.330586][ T64] task_work_run (kernel/task_work.c:228 (discriminator 1)) [ 19.330595][ T64] ? __pfx_task_work_run (kernel/task_work.c:195) [ 19.330606][ T64] resume_user_mode_work (arch/x86/include/asm/current.h:25 include/linux/resume_user_mode.h:53) [ 19.330618][ T64] irqentry_exit_to_user_mode (kernel/entry/common.c:124 include/linux/entry-common.h:330 kernel/entry/common.c:184) [ 19.330626][ T64] irqentry_exit (kernel/entry/common.c:287) [ 19.330632][ T64] exc_page_fault (arch/x86/mm/fault.c:1536) [ 19.330644][ T64] asm_exc_page_fault (arch/x86/include/asm/idtentry.h:623) [ 19.330650][ T64] RIP: 0023:0xf7a9f4c0 [ 19.330656][ T64] Code: 57 8d 1c 06 e8 21 0d 00 00 83 c4 0c c6 04 03 00 50 57 53 89 eb e8 70 15 00 00 83 c4 1c 89 f0 5b 5e 5f 5d c3 66 90 66 90 66 90 <57> 8b 4c 24 08 66 0f 6e 4c 24 0c 66 0f ef d2 89 cf 66 0f 60 c9 66 All code ======== 0: 57 push %rdi 1: 8d 1c 06 lea (%rsi,%rax,1),%ebx 4: e8 21 0d 00 00 call 0xd2a 9: 83 c4 0c add $0xc,%esp c: c6 04 03 00 movb $0x0,(%rbx,%rax,1) 10: 50 push %rax 11: 57 push %rdi 12: 53 push %rbx 13: 89 eb mov %ebp,%ebx 15: e8 70 15 00 00 call 0x158a 1a: 83 c4 1c add $0x1c,%esp 1d: 89 f0 mov %esi,%eax 1f: 5b pop %rbx 20: 5e pop %rsi 21: 5f pop %rdi 22: 5d pop %rbp 23: c3 ret 24: 66 90 xchg %ax,%ax 26: 66 90 xchg %ax,%ax 28: 66 90 xchg %ax,%ax 2a:* 57 push %rdi <-- trapping instruction 2b: 8b 4c 24 08 mov 0x8(%rsp),%ecx 2f: 66 0f 6e 4c 24 0c movd 0xc(%rsp),%xmm1 35: 66 0f ef d2 pxor %xmm2,%xmm2 39: 89 cf mov %ecx,%edi 3b: 66 0f 60 c9 punpcklbw %xmm1,%xmm1 3f: 66 data16 Code starting with the faulting instruction =========================================== 0: 57 push %rdi 1: 8b 4c 24 08 mov 0x8(%rsp),%ecx 5: 66 0f 6e 4c 24 0c movd 0xc(%rsp),%xmm1 b: 66 0f ef d2 pxor %xmm2,%xmm2 f: 89 cf mov %ecx,%edi 11: 66 0f 60 c9 punpcklbw %xmm1,%xmm1 15: 66 data16 [ 19.330662][ T64] RSP: 002b:00000000fffd38cc EFLAGS: 00210246 [ 19.330667][ T64] RAX: 0000000000000000 RBX: 00000000565dbdd4 RCX: 00000000fffd49a8 [ 19.330671][ T64] RDX: 0000000000000000 RSI: 00000000fffd394c RDI: 000000005799e1f0 [ 19.330675][ T64] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 19.330679][ T64] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 19.330682][ T64] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 19.330697][ T64] [ 19.332542][ T64] modprobe (64) used greatest stack depth: 25120 bytes left [ 19.344814][ T65] BUG: using smp_processor_id() in preemptible [00000000] code: modprobe/65 [ 19.360113][ T65] caller is debug_smp_processor_id (lib/smp_processor_id.c:61) [ 19.361051][ T65] CPU: 0 UID: 0 PID: 65 Comm: modprobe Not tainted 6.16.0-00023-gff797757d658 #1 PREEMPT(none) [ 19.361065][ T65] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 [ 19.361071][ T65] Call Trace: [ 19.361074][ T65] [ 19.361079][ T65] dump_stack_lvl (lib/dump_stack.c:123) [ 19.361099][ T65] dump_stack (lib/dump_stack.c:130) [ 19.361111][ T65] check_preemption_disabled (arch/x86/include/asm/preempt.h:85 lib/smp_processor_id.c:53) [ 19.361125][ T65] debug_smp_processor_id (lib/smp_processor_id.c:61) [ 19.361136][ T65] task_cache_work (kernel/sched/fair.c:1422) [ 19.361144][ T65] ? __this_cpu_preempt_check (lib/smp_processor_id.c:67) [ 19.361162][ T65] ? lock_is_held (include/linux/lockdep.h:249) [ 19.361175][ T65] ? _raw_spin_unlock_irq (arch/x86/include/asm/paravirt.h:671 include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) [ 19.361191][ T65] ? __pfx_task_cache_work (kernel/sched/fair.c:1416) [ 19.361199][ T65] ? __this_cpu_preempt_check (lib/smp_processor_id.c:67) [ 19.361210][ T65] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) [ 19.361225][ T65] task_work_run (kernel/task_work.c:228 (discriminator 1)) [ 19.361238][ T65] ? __pfx_task_work_run (kernel/task_work.c:195) [ 19.361256][ T65] resume_user_mode_work (arch/x86/include/asm/current.h:25 include/linux/resume_user_mode.h:53) [ 19.361273][ T65] irqentry_exit_to_user_mode (kernel/entry/common.c:124 include/linux/entry-common.h:330 kernel/entry/common.c:184) [ 19.361286][ T65] irqentry_exit (kernel/entry/common.c:287) [ 19.361295][ T65] exc_page_fault (arch/x86/mm/fault.c:1536) [ 19.361313][ T65] asm_exc_page_fault (arch/x86/include/asm/idtentry.h:623) [ 19.361322][ T65] RIP: 0023:0xf7f7b148 [ 19.361330][ T65] Code: bb 41 ff ff 6f 29 d3 89 04 99 e9 f1 fe ff ff 8b b5 74 ff ff ff 85 f6 74 60 8b 47 30 85 c0 74 03 01 70 04 8b 47 2c 85 c0 74 03 <01> 70 04 8b 47 34 85 c0 74 03 01 70 04 8b 47 38 85 c0 74 03 01 70 All code ======== 0: bb 41 ff ff 6f mov $0x6fffff41,%ebx 5: 29 d3 sub %edx,%ebx 7: 89 04 99 mov %eax,(%rcx,%rbx,4) a: e9 f1 fe ff ff jmp 0xffffffffffffff00 f: 8b b5 74 ff ff ff mov -0x8c(%rbp),%esi 15: 85 f6 test %esi,%esi 17: 74 60 je 0x79 19: 8b 47 30 mov 0x30(%rdi),%eax 1c: 85 c0 test %eax,%eax 1e: 74 03 je 0x23 20: 01 70 04 add %esi,0x4(%rax) 23: 8b 47 2c mov 0x2c(%rdi),%eax 26: 85 c0 test %eax,%eax 28: 74 03 je 0x2d 2a:* 01 70 04 add %esi,0x4(%rax) <-- trapping instruction 2d: 8b 47 34 mov 0x34(%rdi),%eax 30: 85 c0 test %eax,%eax 32: 74 03 je 0x37 34: 01 70 04 add %esi,0x4(%rax) 37: 8b 47 38 mov 0x38(%rdi),%eax 3a: 85 c0 test %eax,%eax 3c: 74 03 je 0x41 3e: 01 .byte 0x1 3f: 70 .byte 0x70 Code starting with the faulting instruction =========================================== 0: 01 70 04 add %esi,0x4(%rax) 3: 8b 47 34 mov 0x34(%rdi),%eax 6: 85 c0 test %eax,%eax 8: 74 03 je 0xd a: 01 70 04 add %esi,0x4(%rax) d: 8b 47 38 mov 0x38(%rdi),%eax 10: 85 c0 test %eax,%eax 12: 74 03 je 0x17 14: 01 .byte 0x1 15: 70 .byte 0x70 [ 19.361339][ T65] RSP: 002b:00000000ffdeddc0 EFLAGS: 00010286 [ 19.361348][ T65] RAX: 00000000f7f395e4 RBX: 0000000000000028 RCX: 00000000f7f6d310 [ 19.361355][ T65] RDX: 0000000000000000 RSI: 00000000f7c78000 RDI: 00000000f7f6d2f0 [ 19.361361][ T65] RBP: 00000000ffdedea8 R08: 0000000000000000 R09: 0000000000000000 [ 19.361367][ T65] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 19.361372][ T65] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 19.361395][ T65] [ 19.405251][ T65] BUG: using smp_processor_id() in preemptible [00000000] code: modprobe/65 [ 19.406850][ T65] caller is debug_smp_processor_id (lib/smp_processor_id.c:61) [ 19.407947][ T65] CPU: 0 UID: 0 PID: 65 Comm: modprobe Not tainted 6.16.0-00023-gff797757d658 #1 PREEMPT(none) [ 19.407964][ T65] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 [ 19.407972][ T65] Call Trace: [ 19.407977][ T65] [ 19.407984][ T65] dump_stack_lvl (lib/dump_stack.c:123) [ 19.408010][ T65] dump_stack (lib/dump_stack.c:130) [ 19.408027][ T65] check_preemption_disabled (arch/x86/include/asm/preempt.h:85 lib/smp_processor_id.c:53) [ 19.408048][ T65] debug_smp_processor_id (lib/smp_processor_id.c:61) [ 19.408062][ T65] task_cache_work (kernel/sched/fair.c:1422) [ 19.408083][ T65] ? find_held_lock (kernel/locking/lockdep.c:5353) [ 19.408108][ T65] ? _raw_spin_unlock_irq (arch/x86/include/asm/paravirt.h:671 include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) [ 19.408130][ T65] ? __pfx_task_cache_work (kernel/sched/fair.c:1416) [ 19.408141][ T65] ? __this_cpu_preempt_check (lib/smp_processor_id.c:67) [ 19.408155][ T65] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) [ 19.408182][ T65] task_work_run (kernel/task_work.c:228 (discriminator 1)) [ 19.408198][ T65] ? __pfx_task_work_run (kernel/task_work.c:195) [ 19.408211][ T65] resume_user_mode_work (arch/x86/include/asm/current.h:25 include/linux/resume_user_mode.h:53) [ 19.408225][ T65] irqentry_exit_to_user_mode (kernel/entry/common.c:124 include/linux/entry-common.h:330 kernel/entry/common.c:184) [ 19.408235][ T65] irqentry_exit (kernel/entry/common.c:287) [ 19.408242][ T65] exc_page_fault (arch/x86/mm/fault.c:1536) [ 19.408256][ T65] asm_exc_page_fault (arch/x86/include/asm/idtentry.h:623) [ 19.408264][ T65] RIP: 0023:0xf7b9cca0 [ 19.408271][ T65] Code: 04 00 00 00 c7 44 24 2c 03 00 00 00 e9 3a fe ff ff e8 a4 1e 00 00 66 90 66 90 c3 66 90 66 90 66 90 66 90 66 90 66 90 66 90 90 14 01 03 00 05 5b 73 0d 00 53 8b 88 f4 fe ff ff 8d 90 e0 38 f6 All code ======== 0: 04 00 add $0x0,%al 2: 00 00 add %al,(%rax) 4: c7 44 24 2c 03 00 00 movl $0x3,0x2c(%rsp) b: 00 c: e9 3a fe ff ff jmp 0xfffffffffffffe4b 11: e8 a4 1e 00 00 call 0x1eba 16: 66 90 xchg %ax,%ax 18: 66 90 xchg %ax,%ax 1a: c3 ret 1b: 66 90 xchg %ax,%ax 1d: 66 90 xchg %ax,%ax 1f: 66 90 xchg %ax,%ax 21: 66 90 xchg %ax,%ax 23: 66 90 xchg %ax,%ax 25: 66 90 xchg %ax,%ax 27: 66 90 xchg %ax,%ax 29: 90 nop 2a:* e8 14 01 03 00 call 0x30143 <-- trapping instruction 2f: 05 5b 73 0d 00 add $0xd735b,%eax 34: 53 push %rbx 35: 8b 88 f4 fe ff ff mov -0x10c(%rax),%ecx 3b: 8d .byte 0x8d 3c: 90 nop 3d: e0 38 loopne 0x77 3f: f6 .byte 0xf6 Code starting with the faulting instruction =========================================== 0: e8 14 01 03 00 call 0x30119 5: 05 5b 73 0d 00 add $0xd735b,%eax a: 53 push %rbx b: 8b 88 f4 fe ff ff mov -0x10c(%rax),%ecx 11: 8d .byte 0x8d 12: 90 nop 13: e0 38 loopne 0x4d 15: f6 .byte 0xf6 [ 19.408277][ T65] RSP: 002b:00000000ffdee69c EFLAGS: 00010202 [ 19.408285][ T65] RAX: 0000000000000000 RBX: 0000000000000007 RCX: 00000000f7f6d5d0 [ 19.408289][ T65] RDX: 0000000000000015 RSI: 00000000f7c81904 RDI: 00000000f7b9cca0 [ 19.408294][ T65] RBP: 00000000ffdee738 R08: 0000000000000000 R09: 0000000000000000 [ 19.408299][ T65] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 19.408303][ T65] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 19.408320][ T65] [ 19.430721][ T65] BUG: using smp_processor_id() in preemptible [00000000] code: modprobe/65 [ 19.431596][ T65] caller is debug_smp_processor_id (lib/smp_processor_id.c:61) [ 19.432219][ T65] CPU: 0 UID: 0 PID: 65 Comm: modprobe Not tainted 6.16.0-00023-gff797757d658 #1 PREEMPT(none) [ 19.432227][ T65] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 [ 19.432232][ T65] Call Trace: [ 19.432234][ T65] [ 19.432237][ T65] dump_stack_lvl (lib/dump_stack.c:123) [ 19.432250][ T65] dump_stack (lib/dump_stack.c:130) [ 19.432258][ T65] check_preemption_disabled (arch/x86/include/asm/preempt.h:85 lib/smp_processor_id.c:53) [ 19.432267][ T65] debug_smp_processor_id (lib/smp_processor_id.c:61) [ 19.432274][ T65] task_cache_work (kernel/sched/fair.c:1422) [ 19.432283][ T65] ? find_held_lock (kernel/locking/lockdep.c:5353) [ 19.432295][ T65] ? _raw_spin_unlock_irq (arch/x86/include/asm/paravirt.h:671 include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) [ 19.432306][ T65] ? __pfx_task_cache_work (kernel/sched/fair.c:1416) [ 19.432311][ T65] ? __this_cpu_preempt_check (lib/smp_processor_id.c:67) [ 19.432318][ T65] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) [ 19.432327][ T65] task_work_run (kernel/task_work.c:228 (discriminator 1)) [ 19.432336][ T65] ? __pfx_task_work_run (kernel/task_work.c:195) [ 19.432348][ T65] resume_user_mode_work (arch/x86/include/asm/current.h:25 include/linux/resume_user_mode.h:53) [ 19.432359][ T65] exit_to_user_mode_loop (kernel/entry/common.c:124) [ 19.432367][ T65] do_int80_emulation (include/linux/entry-common.h:332 include/linux/entry-common.h:414 include/linux/entry-common.h:449 arch/x86/entry/syscall_32.c:175) [ 19.432375][ T65] ? rcu_read_unlock (include/linux/rcupdate.h:874 (discriminator 9)) [ 19.432381][ T65] ? do_read_fault (mm/memory.c:5600) [ 19.432394][ T65] ? do_pte_missing (mm/memory.c:4252) [ 19.432401][ T65] ? handle_pte_fault (mm/memory.c:6069) [ 19.432412][ T65] ? handle_pte_fault (mm/memory.c:6026) [ 19.432421][ T65] ? __pfx_handle_pte_fault (mm/memory.c:6026) [ 19.432430][ T65] ? validate_chain (kernel/locking/lockdep.c:3826 kernel/locking/lockdep.c:3879) [ 19.432439][ T65] ? validate_chain (kernel/locking/lockdep.c:3826 kernel/locking/lockdep.c:3879) [ 19.432449][ T65] ? __lock_acquire (kernel/locking/lockdep.c:5240) [ 19.432461][ T65] ? find_held_lock (kernel/locking/lockdep.c:5353) [ 19.432471][ T65] ? vtime_user_exit (kernel/sched/cputime.c:737) [ 19.432482][ T65] ? vtime_user_exit (kernel/sched/cputime.c:737) [ 19.432492][ T65] ? __this_cpu_preempt_check (lib/smp_processor_id.c:67) [ 19.432504][ T65] ? debug_smp_processor_id (lib/smp_processor_id.c:61) [ 19.432510][ T65] ? rcu_is_watching (include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) [ 19.432519][ T65] ? trace_irq_disable (include/trace/events/preemptirq.h:36 (discriminator 21)) [ 19.432529][ T65] ? trace_hardirqs_off_finish (kernel/trace/trace_preemptirq.c:98) [ 19.432537][ T65] ? do_int80_emulation (arch/x86/include/asm/jump_label.h:36 arch/x86/entry/syscall_32.c:148) [ 19.432546][ T65] asm_int80_emulation (arch/x86/include/asm/idtentry.h:626) [ 19.432552][ T65] RIP: 0023:0xf7f8fd24 [ 19.432558][ T65] Code: b8 5b 00 00 00 cd 80 89 d3 3d 01 f0 ff ff 0f 83 b2 ef ff ff c3 90 53 8b 54 24 10 8b 4c 24 0c 8b 5c 24 08 b8 7d 00 00 00 cd 80 <5b> 3d 01 f0 ff ff 0f 83 90 ef ff ff c3 66 90 66 90 66 90 66 90 66 All code ======== 0: b8 5b 00 00 00 mov $0x5b,%eax 5: cd 80 int $0x80 7: 89 d3 mov %edx,%ebx 9: 3d 01 f0 ff ff cmp $0xfffff001,%eax e: 0f 83 b2 ef ff ff jae 0xffffffffffffefc6 14: c3 ret 15: 90 nop 16: 53 push %rbx 17: 8b 54 24 10 mov 0x10(%rsp),%edx 1b: 8b 4c 24 0c mov 0xc(%rsp),%ecx 1f: 8b 5c 24 08 mov 0x8(%rsp),%ebx 23: b8 7d 00 00 00 mov $0x7d,%eax 28: cd 80 int $0x80 2a:* 5b pop %rbx <-- trapping instruction 2b: 3d 01 f0 ff ff cmp $0xfffff001,%eax 30: 0f 83 90 ef ff ff jae 0xffffffffffffefc6 36: c3 ret 37: 66 90 xchg %ax,%ax 39: 66 90 xchg %ax,%ax 3b: 66 90 xchg %ax,%ax 3d: 66 90 xchg %ax,%ax 3f: 66 data16 Code starting with the faulting instruction =========================================== 0: 5b pop %rbx 1: 3d 01 f0 ff ff cmp $0xfffff001,%eax 6: 0f 83 90 ef ff ff jae 0xffffffffffffef9c c: c3 ret d: 66 90 xchg %ax,%ax f: 66 90 xchg %ax,%ax 11: 66 90 xchg %ax,%ax 13: 66 90 xchg %ax,%ax 15: 66 data16 [ 19.432564][ T65] RSP: 002b:00000000ffdee668 EFLAGS: 00000206 ORIG_RAX: 000000000000007d [ 19.432571][ T65] RAX: 0000000000000000 RBX: 00000000f7f21000 RCX: 000000000001b000 [ 19.432575][ T65] RDX: 0000000000000001 RSI: 00000000f7f9e000 RDI: 00000000f7f6d2f0 [ 19.432579][ T65] RBP: 00000000ffdee738 R08: 0000000000000000 R09: 0000000000000000 [ 19.432583][ T65] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 19.432586][ T65] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 19.432601][ T65] [ 19.477057][ T66] BUG: using smp_processor_id() in preemptible [00000000] code: modprobe/66 [ 19.481747][ T66] caller is debug_smp_processor_id (lib/smp_processor_id.c:61) [ 19.484904][ T66] CPU: 1 UID: 0 PID: 66 Comm: modprobe Not tainted 6.16.0-00023-gff797757d658 #1 PREEMPT(none) [ 19.484945][ T66] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 [ 19.484963][ T66] Call Trace: [ 19.484975][ T66] [ 19.484991][ T66] dump_stack_lvl (lib/dump_stack.c:123) [ 19.485052][ T66] dump_stack (lib/dump_stack.c:130) [ 19.485092][ T66] check_preemption_disabled (arch/x86/include/asm/preempt.h:85 lib/smp_processor_id.c:53) [ 19.485139][ T66] debug_smp_processor_id (lib/smp_processor_id.c:61) [ 19.485176][ T66] task_cache_work (kernel/sched/fair.c:1422) [ 19.485202][ T66] ? __this_cpu_preempt_check (lib/smp_processor_id.c:67) [ 19.485264][ T66] ? lock_is_held (include/linux/lockdep.h:249) [ 19.485307][ T66] ? _raw_spin_unlock_irq (arch/x86/include/asm/paravirt.h:671 include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) [ 19.485357][ T66] ? __pfx_task_cache_work (kernel/sched/fair.c:1416) [ 19.485384][ T66] ? __this_cpu_preempt_check (lib/smp_processor_id.c:67) [ 19.485418][ T66] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) [ 19.485468][ T66] task_work_run (kernel/task_work.c:228 (discriminator 1)) [ 19.485513][ T66] ? __pfx_task_work_run (kernel/task_work.c:195) [ 19.485550][ T66] ? preempt_latency_start (include/linux/ftrace.h:1091 kernel/sched/core.c:5866) [ 19.485607][ T66] resume_user_mode_work (arch/x86/include/asm/current.h:25 include/linux/resume_user_mode.h:53) [ 19.485660][ T66] exit_to_user_mode_loop (kernel/entry/common.c:124) [ 19.485700][ T66] do_int80_emulation (include/linux/entry-common.h:332 include/linux/entry-common.h:414 include/linux/entry-common.h:449 arch/x86/entry/syscall_32.c:175) [ 19.485758][ T66] ? __lock_acquire (kernel/locking/lockdep.c:5240) [ 19.485821][ T66] ? find_held_lock (kernel/locking/lockdep.c:5353) [ 19.485871][ T66] ? vtime_user_exit (kernel/sched/cputime.c:737) [ 19.485924][ T66] ? vtime_user_exit (kernel/sched/cputime.c:737) [ 19.485976][ T66] ? __this_cpu_preempt_check (lib/smp_processor_id.c:67) [ 19.486035][ T66] ? debug_smp_processor_id (lib/smp_processor_id.c:61) [ 19.486070][ T66] ? rcu_is_watching (include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) [ 19.486111][ T66] ? trace_irq_disable (include/trace/events/preemptirq.h:36 (discriminator 21)) [ 19.486159][ T66] ? trace_hardirqs_off_finish (kernel/trace/trace_preemptirq.c:98) [ 19.486198][ T66] ? do_int80_emulation (arch/x86/include/asm/jump_label.h:36 arch/x86/entry/syscall_32.c:148) [ 19.486244][ T66] asm_int80_emulation (arch/x86/include/asm/idtentry.h:626) [ 19.486274][ T66] RIP: 0023:0xf7f82cb0 [ 19.486300][ T66] Code: 4c 24 34 89 44 24 0c 8b 44 24 44 8b 54 24 38 8b 74 24 3c 8b 7c 24 40 a9 ff 0f 00 00 75 1c c1 e8 0c 89 c5 b8 c0 00 00 00 cd 80 <3d> 00 f0 ff ff 77 21 83 c4 1c 5b 5e 5f 5d c3 90 83 c4 1c b8 ea ff All code ======== 0: 4c 24 34 rex.WR and $0x34,%al 3: 89 44 24 0c mov %eax,0xc(%rsp) 7: 8b 44 24 44 mov 0x44(%rsp),%eax b: 8b 54 24 38 mov 0x38(%rsp),%edx f: 8b 74 24 3c mov 0x3c(%rsp),%esi 13: 8b 7c 24 40 mov 0x40(%rsp),%edi 17: a9 ff 0f 00 00 test $0xfff,%eax 1c: 75 1c jne 0x3a 1e: c1 e8 0c shr $0xc,%eax 21: 89 c5 mov %eax,%ebp 23: b8 c0 00 00 00 mov $0xc0,%eax 28: cd 80 int $0x80 2a:* 3d 00 f0 ff ff cmp $0xfffff000,%eax <-- trapping instruction 2f: 77 21 ja 0x52 31: 83 c4 1c add $0x1c,%esp 34: 5b pop %rbx 35: 5e pop %rsi 36: 5f pop %rdi 37: 5d pop %rbp 38: c3 ret 39: 90 nop 3a: 83 c4 1c add $0x1c,%esp 3d: b8 .byte 0xb8 3e: ea (bad) 3f: ff .byte 0xff Code starting with the faulting instruction =========================================== 0: 3d 00 f0 ff ff cmp $0xfffff000,%eax 5: 77 21 ja 0x28 7: 83 c4 1c add $0x1c,%esp a: 5b pop %rbx b: 5e pop %rsi c: 5f pop %rdi d: 5d pop %rbp e: c3 ret f: 90 nop 10: 83 c4 1c add $0x1c,%esp 13: b8 .byte 0xb8 14: ea (bad) 15: ff .byte 0xff [ 19.486327][ T66] RSP: 002b:00000000ff907830 EFLAGS: 00000246 ORIG_RAX: 00000000000000c0 [ 19.486359][ T66] RAX: 00000000f7f34000 RBX: 0000000000000000 RCX: 000000000002b148 [ 19.486380][ T66] RDX: 0000000000000001 RSI: 0000000000000802 RDI: 0000000000000000 [ 19.486399][ T66] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 19.486418][ T66] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 19.486437][ T66] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 19.486519][ T66] [ 19.544246][ T66] BUG: using smp_processor_id() in preemptible [00000000] code: modprobe/66 [ 19.545273][ T66] caller is debug_smp_processor_id (lib/smp_processor_id.c:61) [ 19.545971][ T66] CPU: 1 UID: 0 PID: 66 Comm: modprobe Not tainted 6.16.0-00023-gff797757d658 #1 PREEMPT(none) [ 19.545981][ T66] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 [ 19.545985][ T66] Call Trace: [ 19.545988][ T66] [ 19.545992][ T66] dump_stack_lvl (lib/dump_stack.c:123) [ 19.546007][ T66] dump_stack (lib/dump_stack.c:130) [ 19.546016][ T66] check_preemption_disabled (arch/x86/include/asm/preempt.h:85 lib/smp_processor_id.c:53) [ 19.546027][ T66] debug_smp_processor_id (lib/smp_processor_id.c:61) [ 19.546035][ T66] task_cache_work (kernel/sched/fair.c:1422) [ 19.546046][ T66] ? find_held_lock (kernel/locking/lockdep.c:5353) [ 19.546060][ T66] ? _raw_spin_unlock_irq (arch/x86/include/asm/paravirt.h:671 include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) [ 19.546072][ T66] ? __pfx_task_cache_work (kernel/sched/fair.c:1416) [ 19.546078][ T66] ? __this_cpu_preempt_check (lib/smp_processor_id.c:67) [ 19.546086][ T66] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) [ 19.546098][ T66] task_work_run (kernel/task_work.c:228 (discriminator 1)) [ 19.546108][ T66] ? __pfx_task_work_run (kernel/task_work.c:195) [ 19.546122][ T66] resume_user_mode_work (arch/x86/include/asm/current.h:25 include/linux/resume_user_mode.h:53) [ 19.546135][ T66] exit_to_user_mode_loop (kernel/entry/common.c:124) [ 19.546144][ T66] do_int80_emulation (include/linux/entry-common.h:332 include/linux/entry-common.h:414 include/linux/entry-common.h:449 arch/x86/entry/syscall_32.c:175) [ 19.546155][ T66] ? debug_smp_processor_id (lib/smp_processor_id.c:61) [ 19.546163][ T66] ? rcu_is_watching (include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) [ 19.546173][ T66] ? trace_irq_disable (include/trace/events/preemptirq.h:36 (discriminator 21)) [ 19.546184][ T66] ? trace_hardirqs_off_finish (kernel/trace/trace_preemptirq.c:98) [ 19.546193][ T66] ? do_int80_emulation (arch/x86/include/asm/jump_label.h:36 arch/x86/entry/syscall_32.c:148) [ 19.546203][ T66] asm_int80_emulation (arch/x86/include/asm/idtentry.h:626) [ 19.546211][ T66] RIP: 0023:0xf7f82cb0 [ 19.546218][ T66] Code: 4c 24 34 89 44 24 0c 8b 44 24 44 8b 54 24 38 8b 74 24 3c 8b 7c 24 40 a9 ff 0f 00 00 75 1c c1 e8 0c 89 c5 b8 c0 00 00 00 cd 80 <3d> 00 f0 ff ff 77 21 83 c4 1c 5b 5e 5f 5d c3 90 83 c4 1c b8 ea ff All code ======== 0: 4c 24 34 rex.WR and $0x34,%al 3: 89 44 24 0c mov %eax,0xc(%rsp) 7: 8b 44 24 44 mov 0x44(%rsp),%eax b: 8b 54 24 38 mov 0x38(%rsp),%edx f: 8b 74 24 3c mov 0x3c(%rsp),%esi 13: 8b 7c 24 40 mov 0x40(%rsp),%edi 17: a9 ff 0f 00 00 test $0xfff,%eax 1c: 75 1c jne 0x3a 1e: c1 e8 0c shr $0xc,%eax 21: 89 c5 mov %eax,%ebp 23: b8 c0 00 00 00 mov $0xc0,%eax 28: cd 80 int $0x80 2a:* 3d 00 f0 ff ff cmp $0xfffff000,%eax <-- trapping instruction 2f: 77 21 ja 0x52 31: 83 c4 1c add $0x1c,%esp 34: 5b pop %rbx 35: 5e pop %rsi 36: 5f pop %rdi 37: 5d pop %rbp 38: c3 ret 39: 90 nop 3a: 83 c4 1c add $0x1c,%esp 3d: b8 .byte 0xb8 3e: ea (bad) 3f: ff .byte 0xff Code starting with the faulting instruction =========================================== 0: 3d 00 f0 ff ff cmp $0xfffff000,%eax 5: 77 21 ja 0x28 7: 83 c4 1c add $0x1c,%esp a: 5b pop %rbx b: 5e pop %rsi c: 5f pop %rdi d: 5d pop %rbp e: c3 ret f: 90 nop 10: 83 c4 1c add $0x1c,%esp 13: b8 .byte 0xb8 14: ea (bad) 15: ff .byte 0xff [ 19.546225][ T66] RSP: 002b:00000000ff907810 EFLAGS: 00000246 ORIG_RAX: 00000000000000c0 [ 19.546233][ T66] RAX: 00000000f7c6b000 RBX: 0000000000000000 RCX: 00000000002c8ae0 [ 19.546238][ T66] RDX: 0000000000000001 RSI: 0000000000000802 RDI: 0000000000000000 [ 19.546243][ T66] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 19.546247][ T66] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 19.546252][ T66] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 19.546269][ T66] The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20250812/202508120315.19f6266a-lkp@intel.com -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki