INFO: task kworker/1:3:6634 blocked for more than 143 seconds. Not tainted 6.16.0-rc5-syzkaller-gec4801305969 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:3 state:D stack:0 pid:6634 tgid:6634 ppid:2 task_flags:0x4208060 flags:0x00000010 Workqueue: events rfkill_global_led_trigger_worker Call trace: __switch_to+0x414/0x834 arch/arm64/kernel/process.c:742 (T) context_switch kernel/sched/core.c:5401 [inline] __schedule+0x1414/0x2a28 kernel/sched/core.c:6790 __schedule_loop kernel/sched/core.c:6868 [inline] schedule+0xb4/0x230 kernel/sched/core.c:6883 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6940 __mutex_lock_common+0xbd0/0x2190 kernel/locking/mutex.c:679 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:799 rfkill_global_led_trigger_worker+0x30/0xe4 net/rfkill/core.c:182 process_one_work+0x7e8/0x155c kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3321 [inline] worker_thread+0x958/0xed8 kernel/workqueue.c:3402 kthread+0x5fc/0x75c kernel/kthread.c:464 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:843 INFO: task syz.1.106:7086 blocked for more than 143 seconds. Not tainted 6.16.0-rc5-syzkaller-gec4801305969 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.1.106 state:D stack:0 pid:7086 tgid:7086 ppid:6526 task_flags:0x400040 flags:0x00000011 Call trace: __switch_to+0x414/0x834 arch/arm64/kernel/process.c:742 (T) context_switch kernel/sched/core.c:5401 [inline] __schedule+0x1414/0x2a28 kernel/sched/core.c:6790 __schedule_loop kernel/sched/core.c:6868 [inline] schedule+0xb4/0x230 kernel/sched/core.c:6883 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6940 __mutex_lock_common+0xbd0/0x2190 kernel/locking/mutex.c:679 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:799 rfkill_unregister+0xb8/0x208 net/rfkill/core.c:1145 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:465 ____fput+0x20/0x58 fs/file_table.c:493 task_work_run+0x1dc/0x260 kernel/task_work.c:227 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] do_notify_resume+0x174/0x1f4 arch/arm64/kernel/entry-common.c:155 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:173 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:182 [inline] el0_svc+0xb8/0x180 arch/arm64/kernel/entry-common.c:880 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:898 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 Showing all locks held in the system: 1 lock held by khungtaskd/32: #0: ffff80008f8599c0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:330 4 locks held by kworker/u8:2/41: 2 locks held by pr/ttyAMA0/43: 4 locks held by kworker/1:2/2233: #0: ffff0000c0028d48 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x63c/0x155c kernel/workqueue.c:3212 #1: ffff8000a0ea7bc0 ((rfkill_op_work).work){+.+.}-{0:0}, at: process_one_work+0x6d4/0x155c kernel/workqueue.c:3212 #2: ffff800092b92b08 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_epo+0x58/0x158 net/rfkill/core.c:462 #3: ffff0000f2ae5100 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:884 [inline] #3: ffff0000f2ae5100 (&dev->mutex){....}-{4:4}, at: nfc_dev_down net/nfc/core.c:143 [inline] #3: ffff0000f2ae5100 (&dev->mutex){....}-{4:4}, at: nfc_rfkill_set_block+0x4c/0x2a8 net/nfc/core.c:179 2 locks held by getty/6298: #0: ffff0000cbef40a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80009ba2e2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x34c/0xfa4 drivers/tty/n_tty.c:2222 3 locks held by kworker/1:3/6634: #0: ffff0000c0028d48 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x63c/0x155c kernel/workqueue.c:3212 #1: ffff8000a3a17bc0 ((work_completion)(&rfkill_global_led_trigger_work)){+.+.}-{0:0}, at: process_one_work+0x6d4/0x155c kernel/workqueue.c:3212 #2: ffff800092b92b08 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_global_led_trigger_worker+0x30/0xe4 net/rfkill/core.c:182 1 lock held by syz.3.75/6990: #0: ffff800092b92b08 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_unregister+0xb8/0x208 net/rfkill/core.c:1145 2 locks held by syz.1.106/7086: #0: ffff0000f2ae5100 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:884 [inline] #0: ffff0000f2ae5100 (&dev->mutex){....}-{4:4}, at: nfc_unregister_device+0x68/0x288 net/nfc/core.c:1165 #1: ffff800092b92b08 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_unregister+0xb8/0x208 net/rfkill/core.c:1145 3 locks held by syz.4.250/7646: #0: ffff800091226868 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x68/0x328 drivers/char/misc.c:125 #1: ffff0000cf63d100 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:884 [inline] #1: ffff0000cf63d100 (&dev->mutex){....}-{4:4}, at: nfc_register_device+0xac/0x304 net/nfc/core.c:1128 #2: ffff800092b92b08 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_register+0x44/0x7ac net/rfkill/core.c:1071 1 lock held by syz.2.257/7668: #0: ffff800091226868 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x68/0x328 drivers/char/misc.c:125 1 lock held by syz.0.240/7672: #0: ffff800091226868 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x68/0x328 drivers/char/misc.c:125 1 lock held by syz-executor/7708: #0: ffff800091226868 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x68/0x328 drivers/char/misc.c:125 1 lock held by syz-executor/7943: #0: ffff800091226868 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x68/0x328 drivers/char/misc.c:125 1 lock held by syz-executor/7955: #0: ffff800091226868 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x68/0x328 drivers/char/misc.c:125 1 lock held by syz-executor/8003: #0: ffff800091226868 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x68/0x328 drivers/char/misc.c:125 1 lock held by syz-executor/8187: #0: ffff800091226868 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x68/0x328 drivers/char/misc.c:125 1 lock held by syz-executor/8189: #0: ffff800091226868 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x68/0x328 drivers/char/misc.c:125 1 lock held by syz-executor/8191: #0: ffff800091226868 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x68/0x328 drivers/char/misc.c:125 1 lock held by syz-executor/8194: #0: ffff800091226868 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x68/0x328 drivers/char/misc.c:125 1 lock held by syz-executor/8195: #0: ffff800091226868 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x68/0x328 drivers/char/misc.c:125 1 lock held by syz-executor/8201: #0: ffff800091226868 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x68/0x328 drivers/char/misc.c:125 1 lock held by syz-executor/8203: #0: ffff800091226868 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x68/0x328 drivers/char/misc.c:125 =============================================