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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 PH0PR11MB5013.namprd11.prod.outlook.com (2603:10b6:510:30::21) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8835.29; Tue, 17 Jun 2025 08:24:28 +0000 Received: from LV3PR11MB8603.namprd11.prod.outlook.com ([fe80::4622:29cf:32b:7e5c]) by LV3PR11MB8603.namprd11.prod.outlook.com ([fe80::4622:29cf:32b:7e5c%3]) with mapi id 15.20.8792.034; Tue, 17 Jun 2025 08:24:28 +0000 Date: Tue, 17 Jun 2025 16:24:13 +0800 From: kernel test robot To: Jeff Layton CC: , , , Andrew Morton , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Simon Horman , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , "Jani Nikula" , Joonas Lahtinen , Rodrigo Vivi , Tvrtko Ursulin , Krzysztof Karas , Kuniyuki Iwashima , "Qasim Ijaz" , Nathan Chancellor , Andrew Lunn , , , , "Jeff Layton" , Subject: Re: [PATCH v14 6/9] ref_tracker: automatically register a file in debugfs for a ref_tracker_dir Message-ID: <202506171517.a1e85b6f-lkp@intel.com> Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: <20250610-reftrack-dbgfs-v14-6-efb532861428@kernel.org> X-ClientProxiedBy: SI1PR02CA0042.apcprd02.prod.outlook.com (2603:1096:4:1f6::17) To LV3PR11MB8603.namprd11.prod.outlook.com (2603:10b6:408:1b6::9) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: LV3PR11MB8603:EE_|PH0PR11MB5013:EE_ X-MS-Office365-Filtering-Correlation-Id: 43a5807b-53f0-4cea-3b16-08ddad7860bc X-MS-Exchange-SenderADCheck: 1 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X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH0PR11MB5013 X-OriginatorOrg: intel.com X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" Hello, kernel test robot noticed "BUG:spinlock_trylock_failure_on_UP_on_CPU" on: commit: 1d67742f4a90af28c0f655a9ed8d730459b1f220 ("[PATCH v14 6/9] ref_tracker: automatically register a file in debugfs for a ref_tracker_dir") url: https://github.com/intel-lab-lkp/linux/commits/Jeff-Layton/ref_tracker-don-t-use-pK-in-pr_ostream-output/20250610-230236 patch link: https://lore.kernel.org/all/20250610-reftrack-dbgfs-v14-6-efb532861428@kernel.org/ patch subject: [PATCH v14 6/9] ref_tracker: automatically register a file in debugfs for a ref_tracker_dir in testcase: boot config: i386-randconfig-051-20250611 compiler: clang-20 test machine: qemu-system-i386 -enable-kvm -cpu SandyBridge -smp 2 -m 4G (please refer to attached dmesg/kmsg for entire log/backtrace) +---------------------------------------------+------------+------------+ | | ac254e0747 | 1d67742f4a | +---------------------------------------------+------------+------------+ | BUG:spinlock_trylock_failure_on_UP_on_CPU | 0 | 12 | | WARNING:at_kernel/workqueue.c:#__queue_work | 0 | 12 | | EIP:__queue_work | 0 | 12 | +---------------------------------------------+------------+------------+ 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/202506171517.a1e85b6f-lkp@intel.com [ 13.649422][ T1] BUG: spinlock trylock failure on UP on CPU#0, swapper/1 [ 13.650195][ T1] lock: debugfs_dentries+0x0/0x34, .magic: 00000000, .owner: /-1, .owner_cpu: 0 [ 13.651211][ T1] CPU: 0 UID: 0 PID: 1 Comm: swapper Not tainted 6.15.0-13749-g1d67742f4a90 #1 PREEMPT(undef) [ 13.652340][ T1] Call Trace: [ 13.652705][ T1] __dump_stack (lib/dump_stack.c:95) [ 13.653206][ T1] dump_stack_lvl (lib/dump_stack.c:123) [ 13.653363][ T1] dump_stack (lib/dump_stack.c:129) [ 13.653363][ T1] spin_dump (kernel/locking/spinlock_debug.c:71) [ 13.653363][ T1] do_raw_spin_trylock (kernel/locking/spinlock_debug.c:?) [ 13.653363][ T1] ? xa_set_mark (lib/xarray.c:2075 lib/xarray.c:2146) [ 13.653363][ T1] _raw_spin_lock (include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) [ 13.653363][ T1] xa_set_mark (lib/xarray.c:2075 lib/xarray.c:2146) [ 13.653363][ T1] ref_tracker_dir_exit (include/linux/workqueue.h:723 lib/ref_tracker.c:53 lib/ref_tracker.c:221) [ 13.653363][ T1] ? kvfree (mm/slub.c:5059) [ 13.653363][ T1] free_netdev (net/core/dev.c:11880) [ 13.653363][ T1] free_arcdev (drivers/net/arcnet/arcnet.c:503) [ 13.653363][ T1] com90io_init (drivers/net/arcnet/com90io.c:401) [ 13.653363][ T1] do_one_initcall (init/main.c:1273) [ 13.653363][ T1] ? com90io_setup (drivers/net/arcnet/com90io.c:384) [ 13.653363][ T1] ? __lock_acquire (kernel/locking/lockdep.c:4677) [ 13.653363][ T1] ? kvm_sched_clock_read (arch/x86/kernel/kvmclock.c:91) [ 13.653363][ T1] ? sched_clock_noinstr (arch/x86/kernel/tsc.c:271) [ 13.653363][ T1] ? local_clock_noinstr (kernel/sched/clock.c:269 kernel/sched/clock.c:306) [ 13.653363][ T1] ? __lock_acquire (kernel/locking/lockdep.c:4677) [ 13.653363][ T1] ? local_clock_noinstr (kernel/sched/clock.c:269 kernel/sched/clock.c:306) [ 13.653363][ T1] ? __this_cpu_preempt_check (lib/smp_processor_id.c:67) [ 13.653363][ T1] ? kvm_sched_clock_read (arch/x86/kernel/kvmclock.c:91) [ 13.653363][ T1] ? sched_clock_noinstr (arch/x86/kernel/tsc.c:271) [ 13.653363][ T1] ? local_clock_noinstr (kernel/sched/clock.c:269 kernel/sched/clock.c:306) [ 13.653363][ T1] ? __this_cpu_preempt_check (lib/smp_processor_id.c:67) [ 13.653363][ T1] ? irqtime_account_irq (kernel/sched/cputime.c:?) [ 13.653363][ T1] ? __this_cpu_preempt_check (lib/smp_processor_id.c:67) [ 13.653363][ T1] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) [ 13.653363][ T1] ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:80) [ 13.653363][ T1] ? irqentry_exit (kernel/entry/common.c:?) [ 13.653363][ T1] ? vmware_sched_clock (arch/x86/kernel/apic/apic.c:1050) [ 13.653363][ T1] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050) [ 13.653363][ T1] ? handle_exception (arch/x86/entry/entry_32.S:1048) [ 13.653363][ T1] ? strlen (arch/x86/lib/string_32.c:?) [ 13.653363][ T1] ? next_arg (lib/cmdline.c:273) [ 13.653363][ T1] ? parameq (kernel/params.c:90 kernel/params.c:99) [ 13.653363][ T1] ? parse_args (kernel/params.c:153) [ 13.653363][ T1] do_initcall_level (init/main.c:1334) [ 13.653363][ T1] do_initcalls (init/main.c:1348) [ 13.653363][ T1] do_basic_setup (init/main.c:1371) [ 13.653363][ T1] kernel_init_freeable (init/main.c:1585) [ 13.653363][ T1] ? rest_init (init/main.c:1465) [ 13.653363][ T1] kernel_init (init/main.c:1475) [ 13.653363][ T1] ret_from_fork (arch/x86/kernel/process.c:154) [ 13.653363][ T1] ? debug_smp_processor_id (lib/smp_processor_id.c:60) [ 13.653363][ T1] ? rest_init (init/main.c:1465) [ 13.653363][ T1] ret_from_fork_asm (arch/x86/entry/entry_32.S:737) [ 13.653363][ T1] entry_INT80_32 (arch/x86/entry/entry_32.S:945) [ 13.679093][ T1] ------------[ cut here ]------------ [ 13.679700][ T1] WARNING: CPU: 0 PID: 1 at kernel/workqueue.c:2325 __queue_work (kernel/workqueue.c:2325) [ 13.680616][ T1] Modules linked in: [ 13.681057][ T1] CPU: 0 UID: 0 PID: 1 Comm: swapper Not tainted 6.15.0-13749-g1d67742f4a90 #1 PREEMPT(undef) [ 13.682176][ T1] EIP: __queue_work (kernel/workqueue.c:2325) [ 13.682700][ T1] Code: 4d ec 8b 40 04 89 45 f0 31 db 39 c8 0f 95 c3 b8 98 9f dd d5 89 da 31 c9 6a 00 e8 d4 de 11 00 83 c4 04 8b 45 ec 39 45 f0 74 1a <0f> 0b b8 b0 9f dd d5 89 da 31 c9 6a 00 e8 b7 de 11 00 83 c4 04 e9 All code ======== 0: 4d ec rex.WRB in (%dx),%al 2: 8b 40 04 mov 0x4(%rax),%eax 5: 89 45 f0 mov %eax,-0x10(%rbp) 8: 31 db xor %ebx,%ebx a: 39 c8 cmp %ecx,%eax c: 0f 95 c3 setne %bl f: b8 98 9f dd d5 mov $0xd5dd9f98,%eax 14: 89 da mov %ebx,%edx 16: 31 c9 xor %ecx,%ecx 18: 6a 00 push $0x0 1a: e8 d4 de 11 00 call 0x11def3 1f: 83 c4 04 add $0x4,%esp 22: 8b 45 ec mov -0x14(%rbp),%eax 25: 39 45 f0 cmp %eax,-0x10(%rbp) 28: 74 1a je 0x44 2a:* 0f 0b ud2 <-- trapping instruction 2c: b8 b0 9f dd d5 mov $0xd5dd9fb0,%eax 31: 89 da mov %ebx,%edx 33: 31 c9 xor %ecx,%ecx 35: 6a 00 push $0x0 37: e8 b7 de 11 00 call 0x11def3 3c: 83 c4 04 add $0x4,%esp 3f: e9 .byte 0xe9 Code starting with the faulting instruction =========================================== 0: 0f 0b ud2 2: b8 b0 9f dd d5 mov $0xd5dd9fb0,%eax 7: 89 da mov %ebx,%edx 9: 31 c9 xor %ecx,%ecx b: 6a 00 push $0x0 d: e8 b7 de 11 00 call 0x11dec9 12: 83 c4 04 add $0x4,%esp 15: e9 .byte 0xe9 [ 13.683052][ T1] EAX: d67dc32c EBX: 00000001 ECX: 00000000 EDX: 00000000 [ 13.683052][ T1] ESI: c0321000 EDI: d576af44 EBP: c03a7b9c ESP: c03a7b7c [ 13.683052][ T1] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068 EFLAGS: 00010017 [ 13.683052][ T1] CR0: 80050033 CR2: b7ded3d5 CR3: 16086000 CR4: 000406d0 [ 13.683052][ T1] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000 [ 13.683052][ T1] DR6: fffe0ff0 DR7: 00000400 [ 13.683052][ T1] Call Trace: [ 13.683052][ T1] queue_work_on (kernel/workqueue.c:2392) [ 13.683052][ T1] ref_tracker_dir_exit (lib/ref_tracker.c:222) [ 13.683052][ T1] ? kvfree (mm/slub.c:5059) [ 13.683052][ T1] free_netdev (net/core/dev.c:11880) [ 13.683052][ T1] free_arcdev (drivers/net/arcnet/arcnet.c:503) [ 13.683052][ T1] com90io_init (drivers/net/arcnet/com90io.c:401) [ 13.683052][ T1] do_one_initcall (init/main.c:1273) [ 13.683052][ T1] ? com90io_setup (drivers/net/arcnet/com90io.c:384) [ 13.683052][ T1] ? __lock_acquire (kernel/locking/lockdep.c:4677) [ 13.683052][ T1] ? kvm_sched_clock_read (arch/x86/kernel/kvmclock.c:91) [ 13.683052][ T1] ? sched_clock_noinstr (arch/x86/kernel/tsc.c:271) [ 13.683052][ T1] ? local_clock_noinstr (kernel/sched/clock.c:269 kernel/sched/clock.c:306) [ 13.683052][ T1] ? __lock_acquire (kernel/locking/lockdep.c:4677) [ 13.683052][ T1] ? local_clock_noinstr (kernel/sched/clock.c:269 kernel/sched/clock.c:306) [ 13.683052][ T1] ? __this_cpu_preempt_check (lib/smp_processor_id.c:67) [ 13.683052][ T1] ? kvm_sched_clock_read (arch/x86/kernel/kvmclock.c:91) [ 13.683052][ T1] ? sched_clock_noinstr (arch/x86/kernel/tsc.c:271) [ 13.683052][ T1] ? local_clock_noinstr (kernel/sched/clock.c:269 kernel/sched/clock.c:306) [ 13.683052][ T1] ? __this_cpu_preempt_check (lib/smp_processor_id.c:67) [ 13.683052][ T1] ? irqtime_account_irq (kernel/sched/cputime.c:?) [ 13.683052][ T1] ? __this_cpu_preempt_check (lib/smp_processor_id.c:67) [ 13.683052][ T1] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) [ 13.683052][ T1] ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:80) [ 13.683052][ T1] ? irqentry_exit (kernel/entry/common.c:?) [ 13.683052][ T1] ? vmware_sched_clock (arch/x86/kernel/apic/apic.c:1050) [ 13.683052][ T1] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050) [ 13.683052][ T1] ? handle_exception (arch/x86/entry/entry_32.S:1048) [ 13.683052][ T1] ? strlen (arch/x86/lib/string_32.c:?) [ 13.683052][ T1] ? next_arg (lib/cmdline.c:273) [ 13.683052][ T1] ? parameq (kernel/params.c:90 kernel/params.c:99) [ 13.683052][ T1] ? parse_args (kernel/params.c:153) [ 13.683052][ T1] do_initcall_level (init/main.c:1334) [ 13.683052][ T1] do_initcalls (init/main.c:1348) [ 13.683052][ T1] do_basic_setup (init/main.c:1371) [ 13.683052][ T1] kernel_init_freeable (init/main.c:1585) [ 13.683052][ T1] ? rest_init (init/main.c:1465) [ 13.683052][ T1] kernel_init (init/main.c:1475) [ 13.683052][ T1] ret_from_fork (arch/x86/kernel/process.c:154) [ 13.683052][ T1] ? debug_smp_processor_id (lib/smp_processor_id.c:60) [ 13.683052][ T1] ? rest_init (init/main.c:1465) [ 13.683052][ T1] ret_from_fork_asm (arch/x86/entry/entry_32.S:737) [ 13.683052][ T1] entry_INT80_32 (arch/x86/entry/entry_32.S:945) [ 13.683052][ T1] irq event stamp: 81333 [ 13.683052][ T1] hardirqs last enabled at (81333): _raw_spin_unlock_irqrestore (arch/x86/include/asm/irqflags.h:19 arch/x86/include/asm/irqflags.h:109 arch/x86/include/asm/irqflags.h:151 include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) [ 13.683052][ T1] hardirqs last disabled at (81332): kvfree_call_rcu (mm/slab_common.c:1443 mm/slab_common.c:1834 mm/slab_common.c:1963) [ 13.683052][ T1] softirqs last enabled at (80274): handle_softirqs (arch/x86/include/asm/preempt.h:27 kernel/softirq.c:426 kernel/softirq.c:607) [ 13.683052][ T1] softirqs last disabled at (80265): __do_softirq (kernel/softirq.c:614) [ 13.683052][ T1] ---[ end trace 0000000000000000 ]--- The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20250617/202506171517.a1e85b6f-lkp@intel.com -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki