INFO: task kworker/0:0:7 blocked for more than 143 seconds. Not tainted 6.1.0-rc5-syzkaller-32254-g9e4ce762f0e7 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:0 state:D stack:0 pid:7 ppid:2 flags:0x00000008 Workqueue: events rfkill_sync_work Call trace: __switch_to+0x180/0x298 arch/arm64/kernel/process.c:553 context_switch kernel/sched/core.c:5191 [inline] __schedule+0x408/0x594 kernel/sched/core.c:6503 schedule+0x64/0xa4 kernel/sched/core.c:6579 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6638 __mutex_lock_common+0x788/0xca8 kernel/locking/mutex.c:679 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799 device_lock include/linux/device.h:835 [inline] nfc_dev_down net/nfc/core.c:143 [inline] nfc_rfkill_set_block+0x3c/0x170 net/nfc/core.c:179 rfkill_set_block+0xb4/0x1f8 net/rfkill/core.c:345 rfkill_sync_work+0x64/0x80 net/rfkill/core.c:1042 process_one_work+0x2d8/0x504 kernel/workqueue.c:2289 worker_thread+0x340/0x610 kernel/workqueue.c:2436 kthread+0x12c/0x158 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:863 INFO: task kworker/0:16:4591 blocked for more than 143 seconds. Not tainted 6.1.0-rc5-syzkaller-32254-g9e4ce762f0e7 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:16 state:D stack:0 pid:4591 ppid:2 flags:0x00000008 Workqueue: events rfkill_global_led_trigger_worker Call trace: __switch_to+0x180/0x298 arch/arm64/kernel/process.c:553 context_switch kernel/sched/core.c:5191 [inline] __schedule+0x408/0x594 kernel/sched/core.c:6503 schedule+0x64/0xa4 kernel/sched/core.c:6579 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6638 __mutex_lock_common+0x788/0xca8 kernel/locking/mutex.c:679 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799 rfkill_global_led_trigger_worker+0x28/0xcc net/rfkill/core.c:181 process_one_work+0x2d8/0x504 kernel/workqueue.c:2289 worker_thread+0x340/0x610 kernel/workqueue.c:2436 kthread+0x12c/0x158 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:863 INFO: task syz-executor592:21127 blocked for more than 143 seconds. Not tainted 6.1.0-rc5-syzkaller-32254-g9e4ce762f0e7 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor592 state:D stack:0 pid:21127 ppid:3132 flags:0x0000000c Call trace: __switch_to+0x180/0x298 arch/arm64/kernel/process.c:553 context_switch kernel/sched/core.c:5191 [inline] __schedule+0x408/0x594 kernel/sched/core.c:6503 schedule+0x64/0xa4 kernel/sched/core.c:6579 schedule_timeout+0x64/0x1b4 kernel/time/timer.c:1911 do_wait_for_common+0xf4/0x184 kernel/sched/completion.c:85 __wait_for_common kernel/sched/completion.c:106 [inline] wait_for_common kernel/sched/completion.c:117 [inline] wait_for_completion+0x48/0x60 kernel/sched/completion.c:138 __flush_work+0xd4/0x144 kernel/workqueue.c:3073 __cancel_work_timer+0x1c4/0x2ac kernel/workqueue.c:3160 cancel_work_sync+0x24/0x38 kernel/workqueue.c:3196 rfkill_unregister+0x4c/0xec net/rfkill/core.c:1124 nfc_unregister_device+0x84/0x190 net/nfc/core.c:1167 nci_unregister_device+0xc4/0x100 net/nfc/nci/core.c:1302 virtual_ncidev_close+0x70/0xb0 drivers/nfc/virtual_ncidev.c:166 __fput+0x198/0x3e4 fs/file_table.c:320 ____fput+0x20/0x30 fs/file_table.c:348 task_work_run+0x100/0x148 kernel/task_work.c:179 exit_task_work include/linux/task_work.h:38 [inline] do_exit+0x2dc/0xcac kernel/exit.c:820 __arm64_sys_exit_group+0x0/0x18 kernel/exit.c:950 __do_sys_exit_group kernel/exit.c:961 [inline] __se_sys_exit_group kernel/exit.c:959 [inline] __wake_up_parent+0x0/0x40 kernel/exit.c:959 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall arch/arm64/kernel/syscall.c:52 [inline] el0_svc_common+0x138/0x220 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x48/0x164 arch/arm64/kernel/syscall.c:206 el0_svc+0x58/0x150 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:584 Showing all locks held in the system: 4 locks held by kworker/0:0/7: #0: ffff0000c0010738 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x270/0x504 kernel/workqueue.c:2262 #1: ffff80000f2c3d80 ((work_completion)(&rfkill->sync_work)){+.+.}-{0:0}, at: process_one_work+0x29c/0x504 kernel/workqueue.c:2264 #2: ffff80000d956080 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_sync_work+0x34/0x80 net/rfkill/core.c:1040 #3: ffff0000caf73900 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline] #3: ffff0000caf73900 (&dev->mutex){....}-{3:3}, at: nfc_dev_down net/nfc/core.c:143 [inline] #3: ffff0000caf73900 (&dev->mutex){....}-{3:3}, at: nfc_rfkill_set_block+0x3c/0x170 net/nfc/core.c:179 1 lock held by rcu_tasks_kthre/11: #0: ffff80000d4d4768 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x3c/0x450 kernel/rcu/tasks.h:507 1 lock held by rcu_tasks_trace/12: #0: ffff80000d4d4db8 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x3c/0x450 kernel/rcu/tasks.h:507 1 lock held by khungtaskd/27: #0: ffff80000d4d4640 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:303 2 locks held by getty/2760: #0: ffff0000c7b92098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x28/0x58 drivers/tty/tty_ldisc.c:244 #1: ffff80000f6ee2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x19c/0x89c drivers/tty/n_tty.c:2177 3 locks held by kworker/0:16/4591: #0: ffff0000c0010738 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x270/0x504 kernel/workqueue.c:2262 #1: ffff800013f4bd80 ((work_completion)(&rfkill_global_led_trigger_work)){+.+.}-{0:0}, at: process_one_work+0x29c/0x504 kernel/workqueue.c:2264 #2: ffff80000d956080 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_global_led_trigger_worker+0x28/0xcc net/rfkill/core.c:181 1 lock held by syz-executor592/21127: #0: ffff0000caf73900 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline] #0: ffff0000caf73900 (&dev->mutex){....}-{3:3}, at: nfc_unregister_device+0x70/0x190 net/nfc/core.c:1165 =============================================