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McKenney" CC: , , Joel Fernandes , , Subject: [linux-next:master] [rcutorture] c27d0d38f2: WARNING:at_kernel/rcu/rcutorture.c:#rcutorture_one_extend_check[rcutorture] Message-ID: <202505140917.8ee62cc6-lkp@intel.com> Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline X-ClientProxiedBy: SI2PR02CA0053.apcprd02.prod.outlook.com (2603:1096:4:196::16) To LV3PR11MB8603.namprd11.prod.outlook.com (2603:10b6:408:1b6::9) Precedence: bulk X-Mailing-List: oe-lkp@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: LV3PR11MB8603:EE_|MN0PR11MB6110:EE_ X-MS-Office365-Filtering-Correlation-Id: f05ccc4e-880c-4be7-cf91-08dd9291b0c3 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|366016|1800799024; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?RKskyfgJMoyK/Ishlzs4Rs8bFtjpwd1dl/FSL/imRGbZv61gHZQCI6+ZrHjh?= =?us-ascii?Q?H4pnbrj7GAnXncX9Us2N5V14hfpy/am0bYCWAXbavu1d/vJIAWj0y7mcViq5?= =?us-ascii?Q?3KyQJNydiKC7rm22ldjZjw9FOo8DPokcR8gK1m1o/X8ngp0afe35mHNqTuLl?= =?us-ascii?Q?SxgyxeW/RJ9ph2I5GGpQgpJuc/mVwevjlCGDyMeqRArOzXqo2sTEcR7LEwgs?= =?us-ascii?Q?xqbTapq/+UQrfPgzt214x16GMHXJzBTOgpqLLECLt+SRQK8AAwoT1ixxhEPx?= =?us-ascii?Q?beJEwQ4U31R1fr/fWUOPYKGiTfGWZSpkCXHFCuRFO70MpqlukcxOM6IRyrqY?= =?us-ascii?Q?jHH+6YeiRMWowRN7Eh7MsfF5GRfw5POsG+LwkmuPFI//KMS3Bl+IHpUf7256?= =?us-ascii?Q?DxF1GJjul3Sk9zWb6LTM/w1BSRXJAlfOTpghc7SpwpwDKoCEVqiaX6sg6Mo+?= =?us-ascii?Q?6mRt8oN1/ETwT/M4r9pQ2Uq5tMxKgwm4jeJOz1D4xhZJQhmRCWkwsBr377iX?= =?us-ascii?Q?u1//Khj9N/439t85X72LhMTFZzoplC8eV6lgvEp2gUNdPxBwMe42xT51fOBo?= =?us-ascii?Q?kI7F26kjUeLxJg5WKD14LVBBmb4nO1VaFIZfJGAwX3/1XFbmba7W4yBGP71i?= =?us-ascii?Q?4pOEKWiUZo5nfdeSh7fM4me8ouTC648+ub5/LUEw4BmkoUdTRbdDUeIhvdjc?= =?us-ascii?Q?D+t4LRwcbc85RZ/AfFylGsO58z9g2uxel8ahRH+6xRaOZVCCWYfzVve2XCNW?= =?us-ascii?Q?/b0ZI6g31voZUWcsFvcjjeOGHFwqQx/NOz80A47eMlqsRVeSJT5PJJkSwUiF?= =?us-ascii?Q?7Z5Gk4RET0yPbtWgbKalUVfLpHpqk9Ms0UU3tQltbZ4LbqGCQVuX4pisob06?= =?us-ascii?Q?JsakjREjSPJYfoYL0ovqaEmHHDI7n82EVu178E358hY/FE2IjOEUjujZIyoR?= =?us-ascii?Q?HsB4DDBYDj7A8cs39cqQkqHmXGkJwntQu4RDbYC2KwuiINf/0KTzDW1ILWp0?= =?us-ascii?Q?bwLtAvcdcGgrtrCewxxIe59FMrKFDJ4eNC0NfE/v0zPA+INEigc9y3c+klDQ?= =?us-ascii?Q?BGBcJyd8ckCMbnJweqSECaAw9OqTKp1RFbYw1IrP281BhPwnkvGVLmHFjI+Q?= =?us-ascii?Q?Q1OjtKyz3EtfnWtdHL/vu7e0oT+2OKrKlCrHkYRgdPxGK97r+2RqUMfQJLCj?= =?us-ascii?Q?6j6nNyh4rGU10fm8yc2XmXOL2IOQWaxpZX1afSUmpMLMgXsXYnJQbgArmPm1?= =?us-ascii?Q?H762zeO+dA+UGhFVK3FV+zbxhAUlHrrqv3Yrw3d9Wa/2sPyfsXil/bpuKrnT?= =?us-ascii?Q?5q4tR63X1yMKI9GM7Ch2AxE8qgFRqu21gDHQDdouH1HT4zffAg/yDmd4IdES?= =?us-ascii?Q?4PrKfsrZ/p5c4YItgW5qfhpy6j4a?= 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)(366016)(1800799024);DIR:OUT;SFP:1101; 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Hello, kernel test robot noticed "WARNING:at_kernel/rcu/rcutorture.c:#rcutorture_one_extend_check[rcutorture]" on: commit: c27d0d38f2cafb70a68ca42c4105e170862aaf77 ("rcutorture: Complain if an ->up_read() is delayed more than 10 seconds") https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master [test failed on linux-next/master f48887a98b78880b7711aca311fbbbcaad6c4e3b] in testcase: rcutorture version: with following parameters: runtime: 300s test: cpuhotplug torture_type: srcud config: i386-randconfig-141-20250508 compiler: clang-20 test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 16G (please refer to attached dmesg/kmsg for entire log/backtrace) 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/202505140917.8ee62cc6-lkp@intel.com The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20250514/202505140917.8ee62cc6-lkp@intel.com [ 76.027193][ C1] ------------[ cut here ]------------ [ 76.027652][ T661] srcud-torture: rcu_torture_stats task started [ 76.027754][ C1] rcutorture_one_extend_check before change: Current 0x80 To add 0x0 To remove 0x80 preempt_count() 0x10001 [ 76.029893][ C1] WARNING: CPU: 1 PID: 2 at kernel/rcu/rcutorture.c:1976 rcutorture_one_extend_check+0x5b/0x300 [rcutorture] [ 76.031093][ C1] Modules linked in: rcutorture(+) torture [ 76.031736][ C1] CPU: 1 UID: 0 PID: 2 Comm: kthreadd Tainted: G T 6.15.0-rc1-00008-gc27d0d38f2ca #1 PREEMPT(full) 4c3e2c742772c0895467dcaa42b0aab115cc2926 [ 76.033194][ C1] Tainted: [T]=RANDSTRUCT [ 76.033728][ C1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 [ 76.034602][ C1] EIP: rcutorture_one_extend_check+0x5b/0x300 [rcutorture] [ 76.035319][ C1] Code: 05 68 e2 69 f0 01 64 a1 0c f0 b4 c3 25 ff ff ff 7f 50 ff 75 0c 57 53 56 68 e3 c9 6a f0 68 19 b5 6a f0 e8 b8 c8 96 d0 83 c4 1c <0f> 0b f6 c3 09 75 1d eb 35 9c 8f 45 ec f7 45 ec 00 02 00 00 74 09 [ 76.037024][ C1] EAX: 0000006c EBX: 00000080 ECX: 00000027 EDX: 00000000 [ 76.037760][ C1] ESI: f06ad951 EDI: 00000000 EBP: c7f19da0 ESP: c7f19d8c [ 76.038490][ C1] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068 EFLAGS: 00010082 [ 76.039252][ C1] CR0: 80050033 CR2: b7e17eb0 CR3: 08be7000 CR4: 00040690 [ 76.039989][ C1] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000 [ 76.040713][ C1] DR6: fffe0ff0 DR7: 00000400 [ 76.041313][ C1] Call Trace: [ 76.041825][ C1] rcutorture_one_extend+0x54/0x4b0 [rcutorture 4a4a34e515cdd0c53b2c18de8a71945278e82895] [ 76.042705][ C1] ? lock_acquire+0xa8/0x1c0 [ 76.043299][ C1] rcu_torture_one_read_end+0x1b7/0x350 [rcutorture 4a4a34e515cdd0c53b2c18de8a71945278e82895] [ 76.044196][ C1] ? local_bh_enable+0x20/0x20 [rcutorture 4a4a34e515cdd0c53b2c18de8a71945278e82895] [ 76.045049][ C1] rcu_torture_updown_hrt+0x18/0x30 [rcutorture 4a4a34e515cdd0c53b2c18de8a71945278e82895] [ 76.045935][ C1] __hrtimer_run_queues+0x18a/0x3b0 [ 76.046555][ C1] ? ktime_get_update_offsets_now+0x52/0x200 [ 76.047309][ C1] hrtimer_run_queues+0xf7/0x130 [ 76.048063][ C1] update_process_times+0x25/0xb0 [ 76.048680][ C1] tick_periodic+0xc4/0xe0 [ 76.049272][ C1] tick_handle_periodic+0x23/0x70 [ 76.049875][ C1] __sysvec_apic_timer_interrupt+0x73/0x190 [ 76.050528][ C1] ? sysvec_call_function_single+0x30/0x30 [ 76.051175][ C1] sysvec_apic_timer_interrupt+0x1a/0x34 [ 76.051812][ C1] handle_exception+0x150/0x150 [ 76.052405][ C1] EIP: lock_acquire+0xda/0x1c0 [ 76.052998][ C1] Code: 64 0f c1 05 8c 0e b5 c3 83 f8 01 0f 85 a5 00 00 00 9c 8f 45 d4 f7 45 d4 00 02 00 00 0f 85 a6 00 00 00 85 f6 74 01 fb 83 c4 20 <5e> 5f 5b 5d 2e e9 30 3d 3c 01 89 ce 89 55 f0 8b 55 f0 ff 75 14 ff [ 76.054753][ C1] EAX: 00000001 EBX: c345d894 ECX: b4a771ac EDX: 00000000 [ 76.055499][ C1] ESI: 00000001 EDI: 00000000 EBP: c7f19f50 ESP: c7f19f44 [ 76.056248][ C1] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068 EFLAGS: 00000286 [ 76.057032][ C1] ? try_to_wake_up+0x248/0x850 [ 76.057690][ C1] ? sysvec_call_function_single+0x30/0x30 [ 76.058377][ C1] ? try_to_wake_up+0x248/0x850 [ 76.059009][ C1] ? sysvec_call_function_single+0x30/0x30 [ 76.059693][ C1] ? lock_acquire+0xda/0x1c0 [ 76.060312][ C1] _raw_spin_lock+0x2a/0x3c [ 76.060927][ C1] ? kthreadd+0xda/0x160 [ 76.061549][ C1] kthreadd+0xda/0x160 [ 76.062126][ C1] ? schedule_tail+0xd4/0x120 [ 76.062729][ C1] ? kthread_stop_put+0x30/0x30 [ 76.063335][ C1] ? kthread_stop_put+0x30/0x30 [ 76.063933][ C1] ret_from_fork+0x35/0x40 [ 76.064505][ C1] ret_from_fork_asm+0x12/0x1c [ 76.065091][ C1] entry_INT80_32+0x10d/0x10d [ 76.065693][ C1] irq event stamp: 4386 [ 76.066236][ C1] hardirqs last enabled at (4385): [] finish_lock_switch+0x9d/0xe0 [ 76.067037][ C1] hardirqs last disabled at (4386): [] sysvec_apic_timer_interrupt+0xc/0x34 [ 76.067873][ C1] softirqs last enabled at (2260): [] handle_softirqs+0x372/0x3b0 [ 76.068659][ C1] softirqs last disabled at (2255): [] __do_softirq+0xf/0x16 [ 76.069635][ C1] ---[ end trace 0000000000000000 ]--- [ 76.099825][ T636] srcud-torture: Creating torture_stutter task [ 76.099831][ T667] srcud-torture: torture_shuffle task started [ 76.101418][ T636] srcud-torture: Creating torture_onoff task -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki