INFO: task kworker/0:3:6343 blocked for more than 143 seconds. Not tainted 6.10.0-rc6-syzkaller-g8a03d70c27fc #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:3 state:D stack:0 pid:6343 tgid:6343 ppid:2 flags:0x00000008 Workqueue: events rfkill_global_led_trigger_worker Call trace: __switch_to+0x314/0x560 arch/arm64/kernel/process.c:553 context_switch kernel/sched/core.c:5408 [inline] __schedule+0x14ac/0x24d8 kernel/sched/core.c:6745 __schedule_loop kernel/sched/core.c:6822 [inline] schedule+0xbc/0x238 kernel/sched/core.c:6837 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6894 __mutex_lock_common+0xbd8/0x21a0 kernel/locking/mutex.c:684 __mutex_lock kernel/locking/mutex.c:752 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:804 rfkill_global_led_trigger_worker+0x30/0xe4 net/rfkill/core.c:182 process_one_work+0x79c/0x15b8 kernel/workqueue.c:3248 process_scheduled_works kernel/workqueue.c:3329 [inline] worker_thread+0x938/0xecc kernel/workqueue.c:3409 kthread+0x288/0x310 kernel/kthread.c:389 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860 INFO: task syz.3.377:8578 blocked for more than 143 seconds. Not tainted 6.10.0-rc6-syzkaller-g8a03d70c27fc #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.3.377 state:D stack:0 pid:8578 tgid:8554 ppid:7217 flags:0x0000000d Call trace: __switch_to+0x314/0x560 arch/arm64/kernel/process.c:553 context_switch kernel/sched/core.c:5408 [inline] __schedule+0x14ac/0x24d8 kernel/sched/core.c:6745 __schedule_loop kernel/sched/core.c:6822 [inline] schedule+0xbc/0x238 kernel/sched/core.c:6837 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6894 __mutex_lock_common+0xbd8/0x21a0 kernel/locking/mutex.c:684 __mutex_lock kernel/locking/mutex.c:752 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:804 device_lock include/linux/device.h:1009 [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:346 rfkill_fop_write+0x578/0x734 net/rfkill/core.c:1305 vfs_write+0x3c8/0xc78 fs/read_write.c:588 ksys_write+0x15c/0x26c fs/read_write.c:643 __do_sys_write fs/read_write.c:655 [inline] __se_sys_write fs/read_write.c:652 [inline] __arm64_sys_write+0x7c/0x90 fs/read_write.c:652 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:131 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:150 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 INFO: task syz.1.380:8568 blocked for more than 143 seconds. Not tainted 6.10.0-rc6-syzkaller-g8a03d70c27fc #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.1.380 state:D stack:0 pid:8568 tgid:8568 ppid:6595 flags:0x0000000d Call trace: __switch_to+0x314/0x560 arch/arm64/kernel/process.c:553 context_switch kernel/sched/core.c:5408 [inline] __schedule+0x14ac/0x24d8 kernel/sched/core.c:6745 __schedule_loop kernel/sched/core.c:6822 [inline] schedule+0xbc/0x238 kernel/sched/core.c:6837 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6894 __mutex_lock_common+0xbd8/0x21a0 kernel/locking/mutex.c:684 __mutex_lock kernel/locking/mutex.c:752 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:804 rfkill_unregister+0xb8/0x210 net/rfkill/core.c:1149 nfc_unregister_device+0x98/0x290 net/nfc/core.c:1167 nci_unregister_device+0x1dc/0x21c net/nfc/nci/core.c:1312 virtual_ncidev_close+0x5c/0xa0 drivers/nfc/virtual_ncidev.c:172 __fput+0x334/0x760 fs/file_table.c:422 ____fput+0x20/0x30 fs/file_table.c:450 task_work_run+0x230/0x2e0 kernel/task_work.c:180 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] do_notify_resume+0x178/0x1f4 arch/arm64/kernel/entry-common.c:151 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:169 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:178 [inline] el0_svc+0xac/0x168 arch/arm64/kernel/entry-common.c:713 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 INFO: task syz-executor:8952 blocked for more than 143 seconds. Not tainted 6.10.0-rc6-syzkaller-g8a03d70c27fc #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:0 pid:8952 tgid:8952 ppid:1 flags:0x00000001 Call trace: __switch_to+0x314/0x560 arch/arm64/kernel/process.c:553 context_switch kernel/sched/core.c:5408 [inline] __schedule+0x14ac/0x24d8 kernel/sched/core.c:6745 __schedule_loop kernel/sched/core.c:6822 [inline] schedule+0xbc/0x238 kernel/sched/core.c:6837 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6894 __mutex_lock_common+0xbd8/0x21a0 kernel/locking/mutex.c:684 __mutex_lock kernel/locking/mutex.c:752 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:804 rfkill_register+0x44/0x7d4 net/rfkill/core.c:1075 hci_register_dev+0x398/0x8b0 net/bluetooth/hci_core.c:2683 __vhci_create_device drivers/bluetooth/hci_vhci.c:430 [inline] vhci_create_device+0x354/0x6c0 drivers/bluetooth/hci_vhci.c:472 vhci_get_user drivers/bluetooth/hci_vhci.c:529 [inline] vhci_write+0x318/0x3b8 drivers/bluetooth/hci_vhci.c:609 new_sync_write fs/read_write.c:497 [inline] vfs_write+0x828/0xc78 fs/read_write.c:590 ksys_write+0x15c/0x26c fs/read_write.c:643 __do_sys_write fs/read_write.c:655 [inline] __se_sys_write fs/read_write.c:652 [inline] __arm64_sys_write+0x7c/0x90 fs/read_write.c:652 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:131 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:150 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 INFO: task syz-executor:8972 blocked for more than 143 seconds. Not tainted 6.10.0-rc6-syzkaller-g8a03d70c27fc #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:0 pid:8972 tgid:8972 ppid:1 flags:0x00000001 Call trace: __switch_to+0x314/0x560 arch/arm64/kernel/process.c:553 context_switch kernel/sched/core.c:5408 [inline] __schedule+0x14ac/0x24d8 kernel/sched/core.c:6745 __schedule_loop kernel/sched/core.c:6822 [inline] schedule+0xbc/0x238 kernel/sched/core.c:6837 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6894 __mutex_lock_common+0xbd8/0x21a0 kernel/locking/mutex.c:684 __mutex_lock kernel/locking/mutex.c:752 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:804 rfkill_register+0x44/0x7d4 net/rfkill/core.c:1075 hci_register_dev+0x398/0x8b0 net/bluetooth/hci_core.c:2683 __vhci_create_device drivers/bluetooth/hci_vhci.c:430 [inline] vhci_create_device+0x354/0x6c0 drivers/bluetooth/hci_vhci.c:472 vhci_get_user drivers/bluetooth/hci_vhci.c:529 [inline] vhci_write+0x318/0x3b8 drivers/bluetooth/hci_vhci.c:609 new_sync_write fs/read_write.c:497 [inline] vfs_write+0x828/0xc78 fs/read_write.c:590 ksys_write+0x15c/0x26c fs/read_write.c:643 __do_sys_write fs/read_write.c:655 [inline] __se_sys_write fs/read_write.c:652 [inline] __arm64_sys_write+0x7c/0x90 fs/read_write.c:652 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:131 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:150 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 Showing all locks held in the system: 1 lock held by khungtaskd/31: #0: ffff80008f387a60 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:328 2 locks held by klogd/5892: #0: ffff0001b3d65018 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:559 [inline] #0: ffff0001b3d65018 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock kernel/sched/sched.h:1406 [inline] #0: ffff0001b3d65018 (&rq->__lock){-.-.}-{2:2}, at: rq_lock kernel/sched/sched.h:1702 [inline] #0: ffff0001b3d65018 (&rq->__lock){-.-.}-{2:2}, at: __schedule+0x2e0/0x24d8 kernel/sched/core.c:6653 #1: ffff0001b3d4eec8 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x3c0/0x618 kernel/sched/psi.c:988 2 locks held by getty/6051: #0: ffff0000d22790a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff800097f9b2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x41c/0x1228 drivers/tty/n_tty.c:2211 3 locks held by kworker/0:3/6343: #0: ffff0000c0028948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x624/0x15b8 kernel/workqueue.c:3222 #1: ffff8000aa927c20 ((work_completion)(&rfkill_global_led_trigger_work)){+.+.}-{0:0}, at: process_one_work+0x6a0/0x15b8 kernel/workqueue.c:3222 #2: ffff800092282fe8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_global_led_trigger_worker+0x30/0xe4 net/rfkill/core.c:182 1 lock held by syz-executor/6989: #0: ffff800092282fe8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_unregister+0xb8/0x210 net/rfkill/core.c:1149 2 locks held by syz.3.377/8578: #0: ffff800092282fe8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x234/0x734 net/rfkill/core.c:1297 #1: ffff0000c8385100 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1009 [inline] #1: ffff0000c8385100 (&dev->mutex){....}-{3:3}, at: nfc_dev_down net/nfc/core.c:143 [inline] #1: ffff0000c8385100 (&dev->mutex){....}-{3:3}, at: nfc_rfkill_set_block+0x50/0x2d0 net/nfc/core.c:179 2 locks held by syz.1.380/8568: #0: ffff0000c8385100 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1009 [inline] #0: ffff0000c8385100 (&dev->mutex){....}-{3:3}, at: nfc_unregister_device+0x6c/0x290 net/nfc/core.c:1165 #1: ffff800092282fe8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_unregister+0xb8/0x210 net/rfkill/core.c:1149 2 locks held by syz-executor/8952: #0: ffff0000ec39f918 (&data->open_mutex){+.+.}-{3:3}, at: vhci_create_device+0x44/0x6c0 drivers/bluetooth/hci_vhci.c:471 #1: ffff800092282fe8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_register+0x44/0x7d4 net/rfkill/core.c:1075 2 locks held by syz-executor/8972: #0: ffff0000c7122118 (&data->open_mutex){+.+.}-{3:3}, at: vhci_create_device+0x44/0x6c0 drivers/bluetooth/hci_vhci.c:471 #1: ffff800092282fe8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_register+0x44/0x7d4 net/rfkill/core.c:1075 2 locks held by syz-executor/9593: #0: ffff0000f73e9918 (&data->open_mutex){+.+.}-{3:3}, at: vhci_create_device+0x44/0x6c0 drivers/bluetooth/hci_vhci.c:471 #1: ffff800092282fe8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_register+0x44/0x7d4 net/rfkill/core.c:1075 1 lock held by syz.0.576/9731: #0: ffff800092282fe8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_unregister+0xb8/0x210 net/rfkill/core.c:1149 1 lock held by syz.2.575/9734: #0: ffff800092282fe8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_unregister+0xb8/0x210 net/rfkill/core.c:1149 2 locks held by syz-executor/9736: #0: ffff0000eb7d6118 (&data->open_mutex){+.+.}-{3:3}, at: vhci_create_device+0x44/0x6c0 drivers/bluetooth/hci_vhci.c:471 #1: ffff800092282fe8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_register+0x44/0x7d4 net/rfkill/core.c:1075 2 locks held by syz-executor/9739: #0: ffff0000dd1df918 (&data->open_mutex){+.+.}-{3:3}, at: vhci_create_device+0x44/0x6c0 drivers/bluetooth/hci_vhci.c:471 #1: ffff800092282fe8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_register+0x44/0x7d4 net/rfkill/core.c:1075 2 locks held by syz-executor/9745: #0: ffff0000f39cf118 (&data->open_mutex){+.+.}-{3:3}, at: vhci_create_device+0x44/0x6c0 drivers/bluetooth/hci_vhci.c:471 #1: ffff800092282fe8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_register+0x44/0x7d4 net/rfkill/core.c:1075 2 locks held by syz-executor/9747: #0: ffff0000c7786118 (&data->open_mutex){+.+.}-{3:3}, at: vhci_create_device+0x44/0x6c0 drivers/bluetooth/hci_vhci.c:471 #1: ffff800092282fe8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_register+0x44/0x7d4 net/rfkill/core.c:1075 2 locks held by syz-executor/9750: #0: ffff0000ebaa1118 (&data->open_mutex){+.+.}-{3:3}, at: vhci_create_device+0x44/0x6c0 drivers/bluetooth/hci_vhci.c:471 #1: ffff800092282fe8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_register+0x44/0x7d4 net/rfkill/core.c:1075 2 locks held by syz-executor/9753: #0: ffff0000dacf3118 (&data->open_mutex){+.+.}-{3:3}, at: vhci_create_device+0x44/0x6c0 drivers/bluetooth/hci_vhci.c:471 #1: ffff800092282fe8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_register+0x44/0x7d4 net/rfkill/core.c:1075 2 locks held by syz-executor/9756: #0: ffff0000c8b95118 (&data->open_mutex){+.+.}-{3:3}, at: vhci_create_device+0x44/0x6c0 drivers/bluetooth/hci_vhci.c:471 #1: ffff800092282fe8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_register+0x44/0x7d4 net/rfkill/core.c:1075 2 locks held by syz-executor/9759: #0: ffff0000ebba0918 (&data->open_mutex){+.+.}-{3:3}, at: vhci_create_device+0x44/0x6c0 drivers/bluetooth/hci_vhci.c:471 #1: ffff800092282fe8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_register+0x44/0x7d4 net/rfkill/core.c:1075 2 locks held by syz-executor/9760: #0: ffff0000d142a918 (&data->open_mutex){+.+.}-{3:3}, at: vhci_create_device+0x44/0x6c0 drivers/bluetooth/hci_vhci.c:471 #1: ffff800092282fe8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_register+0x44/0x7d4 net/rfkill/core.c:1075 2 locks held by syz-executor/9764: #0: ffff0000ebfde118 (&data->open_mutex){+.+.}-{3:3}, at: vhci_create_device+0x44/0x6c0 drivers/bluetooth/hci_vhci.c:471 #1: ffff800092282fe8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_register+0x44/0x7d4 net/rfkill/core.c:1075 =============================================