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Mon, 13 Nov 2023 07:59:11 +0000 Date: Mon, 13 Nov 2023 15:59:04 +0800 From: kernel test robot To: Al Viro CC: , , , , Subject: [viro-vfs:work.dcache2] [__dentry_kill()] 01b17d53ce: WARNING:possible_recursive_locking_detected Message-ID: <202311131520.ff2c101e-oliver.sang@intel.com> Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline X-ClientProxiedBy: SI2PR01CA0028.apcprd01.prod.exchangelabs.com (2603:1096:4:192::21) To PH8PR11MB6779.namprd11.prod.outlook.com (2603:10b6:510:1ca::17) Precedence: bulk X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: PH8PR11MB6779:EE_|PH0PR11MB5206:EE_ X-MS-Office365-Filtering-Correlation-Id: 7e761ace-3053-4d84-8f07-08dbe41e6bf3 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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:PH8PR11MB6779.namprd11.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230031)(136003)(346002)(396003)(366004)(39860400002)(376002)(230273577357003)(230922051799003)(230173577357003)(64100799003)(186009)(451199024)(1800799009)(6916009)(2906002)(66476007)(83380400001)(1076003)(107886003)(4326008)(41300700001)(8676002)(8936002)(66556008)(66946007)(38100700002)(316002)(86362001)(5660300002)(478600001)(6512007)(6666004)(6486002)(966005)(6506007)(36756003)(82960400001)(26005)(2616005);DIR:OUT;SFP:1102; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?apTck1odZrVM6XnwUaLsaSux2qujgraWvBNsQG/XBB/fnF1HL5RiOcvlDVxN?= =?us-ascii?Q?hp4tUwG799il+P4wZCiA6YWxefXxNSGwCRaTV0mkJ3qeAsEu1y2b7F3DgNUa?= =?us-ascii?Q?IAUHE3+gjMumB/InctECScXBYost72rpTgvdlO9x1AQFoLniFvH1b4qo7Xh2?= =?us-ascii?Q?rgT9JPqoivGK3OHUddaO31NzfAA5Q52WkeYhjxdxMBSrIAkDTXatJdXFHx4C?= =?us-ascii?Q?qSdDsYfCqtcKKLHvt3coWlAuUAzQ33dVUrONxE7SclQC4Nv/9KAfQqLMw6K1?= =?us-ascii?Q?ft15wL07IuT3HvfadmwQVQ17gBmCBnASHOvaO4NYsd0JGP2UV4XPsVLkBoHY?= =?us-ascii?Q?NmyeMkdDox1vQTMsf9GIZHuQiE1Sq5ogMTWSFf3tZzBxpvozw9vizer70aG+?= =?us-ascii?Q?SsE7SfJbJ/o8QMk9dbAIbr8t10GwIUieIZ4fBUrkgLAvsbJUsZqhRDttgYSr?= =?us-ascii?Q?k3mzNRq8JV5PHjoG0eDlhrW4W8dxtZT7nfl9vpnpuudT9gIgUq7G08J865sv?= =?us-ascii?Q?mBGI01Fp2pfx4YPWolvXT4ehsxdROaKpipI5izJ4EnaJfG5uf0h7E+bty8Ap?= =?us-ascii?Q?wUxOoXbYW1wTTUoMNaSqIAyKul9gXDwn00NOh3u9S7gvrVz3OK/l2KcgtxVD?= =?us-ascii?Q?M/hfb1V+ePHFZpCYpIWrc5G4MRw8lr0bskXsQ4VFSCTV1DH949J6UU8ge8V7?= =?us-ascii?Q?AAi0jwID4CD4VXhMTeUMiiHyFjgSfJw+ax4C4O2kCl82/NygxAuqozVRNWGv?= =?us-ascii?Q?46Gn30V+OVdF7yK8QsOLAdDLv30b74ktLxgGwuUgrMPz5S4TK3L3gEZR7jQL?= =?us-ascii?Q?BEBi3UtoLYP2KAJPft4NESUPKm+RouEReCRt4sTL0PR76MqrK15IWVuQFLAs?= =?us-ascii?Q?J9Gs8T59ci1uH9sip4TDj6QKtA04AWiLvvhYrhHi9rt+0BspT7DefInErCpR?= =?us-ascii?Q?r45wMuUmruhwLfXX2sT9ptLpG79tBD81lWJRyCnPsl46SWbSbQ2QqhYmgymq?= =?us-ascii?Q?O8x0VpdfvV24njoCyIWtWQ9l2fZWKluRhH87byrsRebKM7CXag3Qdq75ieAO?= =?us-ascii?Q?zZz3dRjVMd8M8qGODj4lJahogA4TsrJkqeImNAEqoNf2FY6WlNXqDWpSmKsL?= =?us-ascii?Q?8tLg+cm2dC9ciVvLF7naSOWI8TWq6bM1aOx4tZY+ikWKFb/7HoPNSPXZ1ndn?= =?us-ascii?Q?QgpeHgnFvx9ZFWbs/0o9MYqm/Kniij9mnJQ8kMhZwu/zv8zf1RrzWwUnVrGU?= =?us-ascii?Q?GmlWBSsj4iYGSIqdkpJXPPipfIEcUj+wGoTKbO4l/vA4iz7wIFRHB6+vUktf?= =?us-ascii?Q?06RSpNibKpZ84TyX1QMFCgNgFO4pCrOBbUp69EQZgAmps6nny7DPajrvu+Hj?= =?us-ascii?Q?mYYZlehGsaSZMTkDpWnuR/DSdMoKh/sZj5WsRTpJGePO5AoHTxiorOh7gonh?= =?us-ascii?Q?xFOXaESSAzwab5IV/V6sE2BaJAVAWKAZn8wQ4ykLXvs3Ev8X7bX6VrY9DP3M?= =?us-ascii?Q?gqeD3Efzkv793dX1QPkJZAyN1sWv0H1VljRPaFqqkOtP/j//sEpbGUgTaVWh?= =?us-ascii?Q?VNJ8MyftP6Yh5BzUTbCMTsye8LYY8rzXfUYsHyy/n+05KwoVLNYqrCMwmgce?= =?us-ascii?Q?FA=3D=3D?= X-MS-Exchange-CrossTenant-Network-Message-Id: 7e761ace-3053-4d84-8f07-08dbe41e6bf3 X-MS-Exchange-CrossTenant-AuthSource: PH8PR11MB6779.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 13 Nov 2023 07:59:11.5950 (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: gMmBlUTyq8g8rg4HHzg9iS/y1+WER8tdu67Q7gbFleLhff53JHQBt3mzFkYV1T7fLglDZSkbNGS3c4QH7GiGwg== X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH0PR11MB5206 X-OriginatorOrg: intel.com Hello, kernel test robot noticed "WARNING:possible_recursive_locking_detected" on: commit: 01b17d53ce197777be701269395edba2fe27069a ("__dentry_kill(): new locking scheme") https://git.kernel.org/cgit/linux/kernel/git/viro/vfs.git work.dcache2 in testcase: trinity version: trinity-i386-abe9de86-1_20230429 with following parameters: runtime: 300s group: group-00 nr_groups: 5 test-description: Trinity is a linux system call fuzz tester. test-url: http://codemonkey.org.uk/projects/trinity/ compiler: gcc-11 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/202311131520.ff2c101e-oliver.sang@intel.com [ 12.984549][ T32] WARNING: possible recursive locking detected [ 12.985224][ T32] 6.6.0-00022-g01b17d53ce19 #1 Tainted: G T [ 12.985995][ T32] -------------------------------------------- [ 12.986664][ T32] kworker/u6:1/32 is trying to acquire lock: [ 12.987128][ T32] c140539c (&dentry->d_lock){+.+.}-{2:2}, at: __dentry_kill (fs/dcache.c:547 fs/dcache.c:616) [ 12.987128][ T32] [ 12.987128][ T32] but task is already holding lock: [ 12.987128][ T32] c1402084 (&dentry->d_lock){+.+.}-{2:2}, at: __dentry_kill (include/linux/spinlock.h:351 fs/dcache.c:615) [ 12.987128][ T32] [ 12.987128][ T32] other info that might help us debug this: [ 12.987128][ T32] Possible unsafe locking scenario: [ 12.987128][ T32] [ 12.987128][ T32] CPU0 [ 12.987128][ T32] ---- [ 12.987128][ T32] lock(&dentry->d_lock); [ 12.987128][ T32] [ 12.987128][ T32] *** DEADLOCK *** [ 12.987128][ T32] [ 12.987128][ T32] May be due to missing lock nesting notation [ 12.987128][ T32] [ 12.987128][ T32] 3 locks held by kworker/u6:1/32: [ 12.987128][ T32] #0: c12cb2b8 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work (arch/x86/include/asm/atomic.h:28 include/linux/atomic/atomic-arch-fallback.h:490 include/linux/atomic/atomic-long.h:81 include/linux/atomic/atomic-instrumented.h:3196 kernel/workqueue.c:669 kernel/workqueue.c:696 kernel/workqueue.c:2600) [ 12.987128][ T32] #1: c1ac3f20 ((work_completion)(&entry->work)){+.+.}-{0:0}, at: process_one_work (arch/x86/include/asm/atomic.h:28 include/linux/atomic/atomic-arch-fallback.h:490 include/linux/atomic/atomic-long.h:81 include/linux/atomic/atomic-instrumented.h:3196 kernel/workqueue.c:669 kernel/workqueue.c:696 kernel/workqueue.c:2600) [ 12.987128][ T32] #2: c1402084 (&dentry->d_lock){+.+.}-{2:2}, at: __dentry_kill (include/linux/spinlock.h:351 fs/dcache.c:615) [ 12.987128][ T32] [ 12.987128][ T32] stack backtrace: [ 12.987128][ T32] CPU: 1 PID: 32 Comm: kworker/u6:1 Tainted: G T 6.6.0-00022-g01b17d53ce19 #1 330148d6df35f2d99e64624286ad750c7614ad4a [ 12.987128][ T32] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 [ 12.987128][ T32] Workqueue: events_unbound async_run_entry_fn [ 12.987128][ T32] Call Trace: [ 12.987128][ T32] dump_stack_lvl (lib/dump_stack.c:107) [ 12.987128][ T32] dump_stack (lib/dump_stack.c:114) [ 12.987128][ T32] print_deadlock_bug (kernel/locking/lockdep.c:3013) [ 12.987128][ T32] validate_chain (kernel/locking/lockdep.c:3858) [ 12.987128][ T32] __lock_acquire (kernel/locking/lockdep.c:5136) [ 12.987128][ T32] lock_acquire (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5755) [ 12.987128][ T32] ? __dentry_kill (fs/dcache.c:547 fs/dcache.c:616) [ 12.987128][ T32] _raw_spin_lock (include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) [ 12.987128][ T32] ? __dentry_kill (fs/dcache.c:547 fs/dcache.c:616) [ 12.987128][ T32] __dentry_kill (fs/dcache.c:547 fs/dcache.c:616) [ 12.987128][ T32] dput (fs/dcache.c:1990) [ 12.987128][ T32] ? dput (fs/dcache.c:836) [ 12.987128][ T32] dput (fs/dcache.c:858) [ 12.987128][ T32] step_into (fs/namei.c:1556 fs/namei.c:1840) [ 12.987128][ T32] ? walk_component (fs/namei.c:2003) [ 12.987128][ T32] walk_component (fs/namei.c:2008) [ 12.987128][ T32] path_lookupat (fs/namei.c:2482) [ 12.987128][ T32] filename_lookup (fs/namei.c:2513) [ 12.987128][ T32] kern_path (fs/namei.c:2610) [ 12.987128][ T32] init_stat (fs/init.c:133) [ 12.987128][ T32] clean_path (init/initramfs.c:333) [ 12.987128][ T32] do_name (init/initramfs.c:366) [ 12.987128][ T32] unpack_to_rootfs (init/initramfs.c:451 init/initramfs.c:504) [ 12.987128][ T32] ? kvm_clock_get_cycles (arch/x86/include/asm/preempt.h:85 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) [ 12.987128][ T32] do_populate_rootfs (init/initramfs.c:693) [ 12.987128][ T32] ? process_one_work (arch/x86/include/asm/atomic.h:28 include/linux/atomic/atomic-arch-fallback.h:490 include/linux/atomic/atomic-long.h:81 include/linux/atomic/atomic-instrumented.h:3196 kernel/workqueue.c:669 kernel/workqueue.c:696 kernel/workqueue.c:2600) [ 12.987128][ T32] async_run_entry_fn (kernel/async.c:129 (discriminator 5)) [ 12.987128][ T32] process_one_work (arch/x86/include/asm/atomic.h:23 include/linux/atomic/atomic-arch-fallback.h:444 include/linux/jump_label.h:260 include/linux/jump_label.h:270 include/trace/events/workqueue.h:108 kernel/workqueue.c:2635) [ 12.987128][ T32] ? process_one_work (arch/x86/include/asm/atomic.h:28 include/linux/atomic/atomic-arch-fallback.h:490 include/linux/atomic/atomic-long.h:81 include/linux/atomic/atomic-instrumented.h:3196 kernel/workqueue.c:669 kernel/workqueue.c:696 kernel/workqueue.c:2600) [ 12.987128][ T32] worker_thread (kernel/workqueue.c:2697 kernel/workqueue.c:2784) [ 12.987128][ T32] ? rescuer_thread (kernel/workqueue.c:2730) [ 12.987128][ T32] kthread (kernel/kthread.c:388) [ 12.987128][ T32] ? rescuer_thread (kernel/workqueue.c:2730) [ 12.987128][ T32] ? kthread_complete_and_exit (kernel/kthread.c:341) [ 12.987128][ T32] ret_from_fork (arch/x86/kernel/process.c:153) [ 12.987128][ T32] ? kthread_complete_and_exit (kernel/kthread.c:341) [ 12.987128][ T32] ret_from_fork_asm (arch/x86/entry/entry_32.S:741) [ 12.987128][ T32] entry_INT80_32 (arch/x86/entry/entry_32.S:944) [ 13.024050][ T32] Trying to unpack rootfs image as initramfs... [ 15.772392][ T32] Freeing initrd memory: 128724K [ 15.773782][ T1] RAPL PMU: API unit is 2^-32 Joules, 0 fixed counters, 10737418240 ms ovfl timer The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20231113/202311131520.ff2c101e-oliver.sang@intel.com -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki