INFO: task kworker/1:1:26 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:1 state:D stack:0 pid:26 tgid:26 ppid:2 task_flags:0x4208060 flags:0x00000010 Workqueue: events rfkill_global_led_trigger_worker Call trace: __switch_to+0x418/0x87c arch/arm64/kernel/process.c:741 (T) context_switch kernel/sched/core.c:5325 [inline] __schedule+0x13b0/0x2864 kernel/sched/core.c:6929 __schedule_loop kernel/sched/core.c:7011 [inline] schedule+0xb4/0x230 kernel/sched/core.c:7026 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:7083 __mutex_lock_common+0xd04/0x2678 kernel/locking/mutex.c:676 __mutex_lock kernel/locking/mutex.c:760 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:812 rfkill_global_led_trigger_worker+0x30/0xe4 net/rfkill/core.c:182 process_one_work+0x7e8/0x155c kernel/workqueue.c:3263 process_scheduled_works kernel/workqueue.c:3346 [inline] worker_thread+0x958/0xed8 kernel/workqueue.c:3427 kthread+0x5fc/0x75c kernel/kthread.c:463 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844 INFO: task kworker/1:4:6624 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:4 state:D stack:0 pid:6624 tgid:6624 ppid:2 task_flags:0x4208060 flags:0x00000010 Workqueue: events rfkill_sync_work Call trace: __switch_to+0x418/0x87c arch/arm64/kernel/process.c:741 (T) context_switch kernel/sched/core.c:5325 [inline] __schedule+0x13b0/0x2864 kernel/sched/core.c:6929 __schedule_loop kernel/sched/core.c:7011 [inline] schedule+0xb4/0x230 kernel/sched/core.c:7026 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:7083 __mutex_lock_common+0xd04/0x2678 kernel/locking/mutex.c:676 __mutex_lock kernel/locking/mutex.c:760 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:812 device_lock include/linux/device.h:914 [inline] nfc_dev_down net/nfc/core.c:143 [inline] nfc_rfkill_set_block+0x4c/0x2a8 net/nfc/core.c:179 rfkill_set_block+0x18c/0x374 net/rfkill/core.c:346 rfkill_sync net/rfkill/core.c:379 [inline] rfkill_sync_work+0x100/0x1e8 net/rfkill/core.c:1056 process_one_work+0x7e8/0x155c kernel/workqueue.c:3263 process_scheduled_works kernel/workqueue.c:3346 [inline] worker_thread+0x958/0xed8 kernel/workqueue.c:3427 kthread+0x5fc/0x75c kernel/kthread.c:463 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844 INFO: task syz.3.83:6999 blocked for more than 143 seconds. Not tainted syzkaller #0 Blocked by coredump. "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.3.83 state:D stack:0 pid:6999 tgid:6998 ppid:6550 task_flags:0x40044c flags:0x00000018 Call trace: __switch_to+0x418/0x87c arch/arm64/kernel/process.c:741 (T) context_switch kernel/sched/core.c:5325 [inline] __schedule+0x13b0/0x2864 kernel/sched/core.c:6929 __schedule_loop kernel/sched/core.c:7011 [inline] schedule+0xb4/0x230 kernel/sched/core.c:7026 schedule_timeout+0xac/0x270 kernel/time/sleep_timeout.c:75 do_wait_for_common+0x288/0x3f8 kernel/sched/completion.c:100 __wait_for_common kernel/sched/completion.c:121 [inline] wait_for_common kernel/sched/completion.c:132 [inline] wait_for_completion+0x44/0x5c kernel/sched/completion.c:153 __flush_work+0x714/0x8c0 kernel/workqueue.c:4273 __cancel_work_sync kernel/workqueue.c:4393 [inline] cancel_work_sync+0xc4/0x120 kernel/workqueue.c:4430 rfkill_unregister+0x8c/0x208 net/rfkill/core.c:1139 nfc_unregister_device+0x94/0x288 net/nfc/core.c:1167 nci_unregister_device+0x1dc/0x21c net/nfc/nci/core.c:1323 virtual_ncidev_close+0x5c/0xa0 drivers/nfc/virtual_ncidev.c:172 __fput+0x340/0x75c fs/file_table.c:468 ____fput+0x20/0x58 fs/file_table.c:496 task_work_run+0x1dc/0x260 kernel/task_work.c:227 exit_task_work include/linux/task_work.h:40 [inline] do_exit+0x524/0x1a14 kernel/exit.c:966 do_group_exit+0x194/0x22c kernel/exit.c:1107 get_signal+0x11dc/0x12f8 kernel/signal.c:3034 arch_do_signal_or_restart+0x274/0x4414 arch/arm64/kernel/signal.c:1619 exit_to_user_mode_loop+0x7c/0x178 kernel/entry/common.c:40 exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline] arm64_exit_to_user_mode arch/arm64/kernel/entry-common.c:103 [inline] el0_svc+0x170/0x254 arch/arm64/kernel/entry-common.c:747 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:765 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 Showing all locks held in the system: 3 locks held by kworker/1:1/26: #0: ffff0000c0029948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x63c/0x155c kernel/workqueue.c:3237 #1: ffff800097b47be0 ((work_completion)(&rfkill_global_led_trigger_work)){+.+.}-{0:0}, at: process_one_work+0x6d4/0x155c kernel/workqueue.c:3237 #2: ffff800092b37f48 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_global_led_trigger_worker+0x30/0xe4 net/rfkill/core.c:182 1 lock held by khungtaskd/32: #0: ffff80008f76b5a0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:330 4 locks held by kworker/u8:4/210: 3 locks held by kworker/u8:7/4574: 3 locks held by udevd/6192: 2 locks held by getty/6335: #0: ffff0000d86500a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80009bb2e2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x34c/0xfa4 drivers/tty/n_tty.c:2222 2 locks held by udevd/6544: #0: ffff0000c1465838 (&sb->s_type->i_mutex_key#8){++++}-{4:4}, at: inode_lock_shared include/linux/fs.h:995 [inline] #0: ffff0000c1465838 (&sb->s_type->i_mutex_key#8){++++}-{4:4}, at: blkdev_read_iter+0x2a0/0x3dc block/fops.c:858 #1: ffff0000c14659d8 (mapping.invalidate_lock){++++}-{4:4}, at: filemap_invalidate_lock_shared include/linux/fs.h:1045 [inline] #1: ffff0000c14659d8 (mapping.invalidate_lock){++++}-{4:4}, at: filemap_update_page mm/filemap.c:2497 [inline] #1: ffff0000c14659d8 (mapping.invalidate_lock){++++}-{4:4}, at: filemap_get_pages+0x574/0x1ab0 mm/filemap.c:2661 1 lock held by syz-executor/6550: #0: ffff800092b37f48 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_unregister+0xb8/0x208 net/rfkill/core.c:1145 4 locks held by kworker/1:4/6624: #0: ffff0000c0029948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x63c/0x155c kernel/workqueue.c:3237 #1: ffff8000a0327be0 ((work_completion)(&rfkill->sync_work)){+.+.}-{0:0}, at: process_one_work+0x6d4/0x155c kernel/workqueue.c:3237 #2: ffff800092b37f48 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_sync_work+0x38/0x1e8 net/rfkill/core.c:1055 #3: ffff0000ddc21100 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:914 [inline] #3: ffff0000ddc21100 (&dev->mutex){....}-{4:4}, at: nfc_dev_down net/nfc/core.c:143 [inline] #3: ffff0000ddc21100 (&dev->mutex){....}-{4:4}, at: nfc_rfkill_set_block+0x4c/0x2a8 net/nfc/core.c:179 5 locks held by kworker/1:5/6664: #0: ffff0000c2bd8d48 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x63c/0x155c kernel/workqueue.c:3237 #1: ffff80009fc37be0 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x6d4/0x155c kernel/workqueue.c:3237 #2: ffff0000cf013198 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:914 [inline] #2: ffff0000cf013198 (&dev->mutex){....}-{4:4}, at: hub_event+0x140/0x3c78 drivers/usb/core/hub.c:5898 #3: ffff0000cf016528 (&port_dev->status_lock){+.+.}-{4:4}, at: usb_lock_port drivers/usb/core/hub.c:3251 [inline] #3: ffff0000cf016528 (&port_dev->status_lock){+.+.}-{4:4}, at: hub_port_connect drivers/usb/core/hub.c:5463 [inline] #3: ffff0000cf016528 (&port_dev->status_lock){+.+.}-{4:4}, at: hub_port_connect_change drivers/usb/core/hub.c:5706 [inline] #3: ffff0000cf016528 (&port_dev->status_lock){+.+.}-{4:4}, at: port_event drivers/usb/core/hub.c:5870 [inline] #3: ffff0000cf016528 (&port_dev->status_lock){+.+.}-{4:4}, at: hub_event+0x1b68/0x3c78 drivers/usb/core/hub.c:5952 #4: ffff0000cd36f068 (hcd->address0_mutex){+.+.}-{4:4}, at: hub_port_connect drivers/usb/core/hub.c:5464 [inline] #4: ffff0000cd36f068 (hcd->address0_mutex){+.+.}-{4:4}, at: hub_port_connect_change drivers/usb/core/hub.c:5706 [inline] #4: ffff0000cd36f068 (hcd->address0_mutex){+.+.}-{4:4}, at: port_event drivers/usb/core/hub.c:5870 [inline] #4: ffff0000cd36f068 (hcd->address0_mutex){+.+.}-{4:4}, at: hub_event+0x1b90/0x3c78 drivers/usb/core/hub.c:5952 1 lock held by syz.3.83/6999: #0: ffff0000ddc21100 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:914 [inline] #0: ffff0000ddc21100 (&dev->mutex){....}-{4:4}, at: nfc_unregister_device+0x68/0x288 net/nfc/core.c:1165 2 locks held by syz-executor/7273: #0: ffff0000d4d3a118 (&data->open_mutex){+.+.}-{4:4}, at: vhci_create_device+0x3c/0x638 drivers/bluetooth/hci_vhci.c:478 #1: ffff800092b37f48 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_register+0x44/0x7ac net/rfkill/core.c:1071 2 locks held by kworker/u8:10/7797: 2 locks held by syz-executor/8181: #0: ffff0000d7e01118 (&data->open_mutex){+.+.}-{4:4}, at: vhci_create_device+0x3c/0x638 drivers/bluetooth/hci_vhci.c:478 #1: ffff800092b37f48 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_register+0x44/0x7ac net/rfkill/core.c:1071 2 locks held by syz-executor/8928: #0: ffff0000ca414118 (&data->open_mutex){+.+.}-{4:4}, at: vhci_create_device+0x3c/0x638 drivers/bluetooth/hci_vhci.c:478 #1: ffff800092b37f48 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_register+0x44/0x7ac net/rfkill/core.c:1071 =============================================