INFO: task kworker/1:1:4004 blocked for more than 143 seconds. Not tainted 5.15.118-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:1 state:D stack: 0 pid: 4004 ppid: 2 flags:0x00000008 Workqueue: events rfkill_global_led_trigger_worker Call trace: __switch_to+0x308/0x5e8 arch/arm64/kernel/process.c:518 context_switch kernel/sched/core.c:5026 [inline] __schedule+0xf10/0x1e38 kernel/sched/core.c:6372 schedule+0x11c/0x1c8 kernel/sched/core.c:6455 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6514 __mutex_lock_common+0xba0/0x2154 kernel/locking/mutex.c:669 __mutex_lock kernel/locking/mutex.c:729 [inline] mutex_lock_nested+0xa4/0xf8 kernel/locking/mutex.c:743 rfkill_global_led_trigger_worker+0x30/0xe4 net/rfkill/core.c:181 process_one_work+0x790/0x11b8 kernel/workqueue.c:2307 worker_thread+0x910/0x1034 kernel/workqueue.c:2454 kthread+0x37c/0x45c kernel/kthread.c:319 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870 INFO: task kworker/1:8:4073 blocked for more than 143 seconds. Not tainted 5.15.118-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:8 state:D stack: 0 pid: 4073 ppid: 2 flags:0x00000008 Workqueue: events rfkill_sync_work Call trace: __switch_to+0x308/0x5e8 arch/arm64/kernel/process.c:518 context_switch kernel/sched/core.c:5026 [inline] __schedule+0xf10/0x1e38 kernel/sched/core.c:6372 schedule+0x11c/0x1c8 kernel/sched/core.c:6455 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6514 __mutex_lock_common+0xba0/0x2154 kernel/locking/mutex.c:669 __mutex_lock kernel/locking/mutex.c:729 [inline] mutex_lock_nested+0xa4/0xf8 kernel/locking/mutex.c:743 rfkill_sync_work+0x34/0x104 net/rfkill/core.c:1028 process_one_work+0x790/0x11b8 kernel/workqueue.c:2307 worker_thread+0x910/0x1034 kernel/workqueue.c:2454 kthread+0x37c/0x45c kernel/kthread.c:319 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870 INFO: task syz-executor.3:12028 blocked for more than 143 seconds. Not tainted 5.15.118-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.3 state:D stack: 0 pid:12028 ppid: 4018 flags:0x00000009 Call trace: __switch_to+0x308/0x5e8 arch/arm64/kernel/process.c:518 context_switch kernel/sched/core.c:5026 [inline] __schedule+0xf10/0x1e38 kernel/sched/core.c:6372 schedule+0x11c/0x1c8 kernel/sched/core.c:6455 schedule_timeout+0xb8/0x344 kernel/time/timer.c:1860 do_wait_for_common+0x214/0x388 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+0x4c/0x64 kernel/sched/completion.c:138 __flush_work+0x12c/0x1c0 kernel/workqueue.c:3091 __cancel_work_timer+0x3ec/0x548 kernel/workqueue.c:3178 cancel_work_sync+0x24/0x38 kernel/workqueue.c:3214 rfkill_unregister+0x8c/0x210 net/rfkill/core.c:1112 nfc_unregister_device+0x98/0x290 net/nfc/core.c:1167 nci_unregister_device+0x1e0/0x22c net/nfc/nci/core.c:1306 virtual_ncidev_close+0x70/0xb0 drivers/nfc/virtual_ncidev.c:166 __fput+0x30c/0x7f0 fs/file_table.c:280 ____fput+0x20/0x30 fs/file_table.c:308 task_work_run+0x130/0x1e4 kernel/task_work.c:164 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x262c/0x32b8 arch/arm64/kernel/signal.c:946 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xfc/0x1f0 arch/arm64/kernel/entry-common.c:597 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:614 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 INFO: task syz-executor.2:12041 blocked for more than 143 seconds. Not tainted 5.15.118-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack: 0 pid:12041 ppid: 4024 flags:0x00000009 Call trace: __switch_to+0x308/0x5e8 arch/arm64/kernel/process.c:518 context_switch kernel/sched/core.c:5026 [inline] __schedule+0xf10/0x1e38 kernel/sched/core.c:6372 schedule+0x11c/0x1c8 kernel/sched/core.c:6455 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6514 __mutex_lock_common+0xba0/0x2154 kernel/locking/mutex.c:669 __mutex_lock kernel/locking/mutex.c:729 [inline] mutex_lock_nested+0xa4/0xf8 kernel/locking/mutex.c:743 device_lock include/linux/device.h:760 [inline] nfc_dev_down net/nfc/core.c:143 [inline] nfc_rfkill_set_block+0x50/0x2d0 net/nfc/core.c:179 rfkill_set_block+0x18c/0x37c net/rfkill/core.c:345 rfkill_fop_write+0x594/0x750 net/rfkill/core.c:1274 vfs_write+0x280/0xb3c fs/read_write.c:592 ksys_write+0x15c/0x26c fs/read_write.c:647 __do_sys_write fs/read_write.c:659 [inline] __se_sys_write fs/read_write.c:656 [inline] __arm64_sys_write+0x7c/0x90 fs/read_write.c:656 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:596 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:614 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 INFO: task syz-executor.2:12046 blocked for more than 143 seconds. Not tainted 5.15.118-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack: 0 pid:12046 ppid: 4024 flags:0x00000001 Call trace: __switch_to+0x308/0x5e8 arch/arm64/kernel/process.c:518 context_switch kernel/sched/core.c:5026 [inline] __schedule+0xf10/0x1e38 kernel/sched/core.c:6372 schedule+0x11c/0x1c8 kernel/sched/core.c:6455 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6514 __mutex_lock_common+0xba0/0x2154 kernel/locking/mutex.c:669 __mutex_lock kernel/locking/mutex.c:729 [inline] mutex_lock_nested+0xa4/0xf8 kernel/locking/mutex.c:743 rfkill_fop_write+0x250/0x750 net/rfkill/core.c:1266 vfs_write+0x280/0xb3c fs/read_write.c:592 ksys_write+0x15c/0x26c fs/read_write.c:647 __do_sys_write fs/read_write.c:659 [inline] __se_sys_write fs/read_write.c:656 [inline] __arm64_sys_write+0x7c/0x90 fs/read_write.c:656 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:596 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:614 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 Showing all locks held in the system: 1 lock held by khungtaskd/27: #0: ffff800014ac19a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:268 1 lock held by klogd/3574: #0: ffff0001b480bd18 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:475 [inline] #0: ffff0001b480bd18 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock kernel/sched/sched.h:1326 [inline] #0: ffff0001b480bd18 (&rq->__lock){-.-.}-{2:2}, at: rq_lock kernel/sched/sched.h:1621 [inline] #0: ffff0001b480bd18 (&rq->__lock){-.-.}-{2:2}, at: __schedule+0x328/0x1e38 kernel/sched/core.c:6286 2 locks held by getty/3722: #0: ffff0000d3aca098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x40/0x50 drivers/tty/tty_ldsem.c:340 #1: ffff80001a31b2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x414/0x1200 drivers/tty/n_tty.c:2147 3 locks held by kworker/1:1/4004: #0: ffff0000c0020d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x66c/0x11b8 kernel/workqueue.c:2280 #1: ffff80001cce7c00 ((work_completion)(&rfkill_global_led_trigger_work)){+.+.}-{0:0}, at: process_one_work+0x6ac/0x11b8 kernel/workqueue.c:2282 #2: ffff800016c5a348 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_global_led_trigger_worker+0x30/0xe4 net/rfkill/core.c:181 3 locks held by kworker/1:8/4073: #0: ffff0000c0020d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x66c/0x11b8 kernel/workqueue.c:2280 #1: ffff80001d417c00 ((work_completion)(&rfkill->sync_work)){+.+.}-{0:0}, at: process_one_work+0x6ac/0x11b8 kernel/workqueue.c:2282 #2: ffff800016c5a348 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_sync_work+0x34/0x104 net/rfkill/core.c:1028 1 lock held by syz-executor.3/12028: #0: ffff0000d01c0190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline] #0: ffff0000d01c0190 (&dev->mutex){....}-{3:3}, at: nfc_unregister_device+0x6c/0x290 net/nfc/core.c:1165 2 locks held by syz-executor.2/12041: #0: ffff800016c5a348 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x250/0x750 net/rfkill/core.c:1266 #1: ffff0000d01c0190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline] #1: ffff0000d01c0190 (&dev->mutex){....}-{3:3}, at: nfc_dev_down net/nfc/core.c:143 [inline] #1: ffff0000d01c0190 (&dev->mutex){....}-{3:3}, at: nfc_rfkill_set_block+0x50/0x2d0 net/nfc/core.c:179 1 lock held by syz-executor.2/12046: #0: ffff800016c5a348 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x250/0x750 net/rfkill/core.c:1266 2 locks held by syz-executor.3/12163: #0: ffff0000da21fd18 (&data->open_mutex){+.+.}-{3:3}, at: vhci_create_device+0x44/0x568 drivers/bluetooth/hci_vhci.c:149 #1: ffff800016c5a348 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_register+0x44/0x7a4 net/rfkill/core.c:1045 2 locks held by syz-executor.2/12166: #0: ffff0001286edd18 (&data->open_mutex){+.+.}-{3:3}, at: vhci_create_device+0x44/0x568 drivers/bluetooth/hci_vhci.c:149 #1: ffff800016c5a348 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_register+0x44/0x7a4 net/rfkill/core.c:1045 2 locks held by syz-executor.3/12169: #0: ffff0000d5ef4d18 (&data->open_mutex){+.+.}-{3:3}, at: vhci_create_device+0x44/0x568 drivers/bluetooth/hci_vhci.c:149 #1: ffff800016c5a348 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_register+0x44/0x7a4 net/rfkill/core.c:1045 2 locks held by syz-executor.2/12171: #0: ffff00012a232918 (&data->open_mutex){+.+.}-{3:3}, at: vhci_create_device+0x44/0x568 drivers/bluetooth/hci_vhci.c:149 #1: ffff800016c5a348 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_register+0x44/0x7a4 net/rfkill/core.c:1045 =============================================