INFO: task kworker/1:0:26359 blocked for more than 432 seconds. Not tainted 6.12.0-syzkaller-11716-gd8b78066f4c9 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:0 state:D stack:0 pid:26359 tgid:26359 ppid:2 flags:0x00000008 Workqueue: events rfkill_global_led_trigger_worker Call trace: __switch_to+0x204/0x4bc arch/arm64/kernel/process.c:701 (T) context_switch kernel/sched/core.c:5369 [inline] __schedule+0xafc/0x2eb8 kernel/sched/core.c:6756 __schedule_loop kernel/sched/core.c:6833 [inline] schedule+0xd0/0x304 kernel/sched/core.c:6848 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6905 __mutex_lock_common kernel/locking/mutex.c:665 [inline] __mutex_lock+0x544/0x8ac kernel/locking/mutex.c:735 mutex_lock_nested+0x24/0x30 kernel/locking/mutex.c:787 rfkill_global_led_trigger_worker+0x2c/0x10c net/rfkill/core.c:182 process_one_work+0x7b4/0x189c kernel/workqueue.c:3229 process_scheduled_works kernel/workqueue.c:3310 [inline] worker_thread+0x730/0xb74 kernel/workqueue.c:3391 kthread+0x27c/0x300 kernel/kthread.c:389 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862 INFO: task syz.1.18084:7734 blocked for more than 432 seconds. Not tainted 6.12.0-syzkaller-11716-gd8b78066f4c9 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.1.18084 state:D stack:0 pid:7734 tgid:7734 ppid:3281 flags:0x00400009 Call trace: __switch_to+0x204/0x4bc arch/arm64/kernel/process.c:701 (T) context_switch kernel/sched/core.c:5369 [inline] __schedule+0xafc/0x2eb8 kernel/sched/core.c:6756 __schedule_loop kernel/sched/core.c:6833 [inline] schedule+0xd0/0x304 kernel/sched/core.c:6848 schedule_timeout+0x1dc/0x214 kernel/time/sleep_timeout.c:75 do_wait_for_common kernel/sched/completion.c:95 [inline] __wait_for_common+0x1d4/0x4b0 kernel/sched/completion.c:116 wait_for_common kernel/sched/completion.c:127 [inline] wait_for_completion+0x20/0x2c kernel/sched/completion.c:148 __flush_work+0x460/0x8f8 kernel/workqueue.c:4231 __cancel_work_sync+0xb0/0x108 kernel/workqueue.c:4351 cancel_work_sync+0x14/0x20 kernel/workqueue.c:4388 rfkill_unregister+0x70/0x240 net/rfkill/core.c:1139 nfc_unregister_device+0x68/0x298 net/nfc/core.c:1167 nci_unregister_device+0x1bc/0x294 net/nfc/nci/core.c:1323 virtual_ncidev_close+0x48/0xb0 drivers/nfc/virtual_ncidev.c:172 __fput+0x2c4/0x94c fs/file_table.c:450 ____fput+0x14/0x20 fs/file_table.c:478 task_work_run+0x128/0x210 kernel/task_work.c:239 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] do_notify_resume+0x1d0/0x258 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_compat+0xfc/0x17c arch/arm64/kernel/entry-common.c:888 el0t_32_sync_handler+0x98/0x13c arch/arm64/kernel/entry-common.c:897 el0t_32_sync+0x19c/0x1a0 arch/arm64/kernel/entry.S:605 Showing all locks held in the system: 1 lock held by khungtaskd/31: #0: ffff800086f895e0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x44/0x2d0 kernel/locking/lockdep.c:6738 2 locks held by getty/3220: #0: ffff0000178730a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80008d05b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x93c/0xe9c drivers/tty/n_tty.c:2211 3 locks held by kworker/1:0/26359: #0: ffff00000d428948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x6e0/0x189c kernel/workqueue.c:3204 #1: ffff8000a0757ce0 ((work_completion)(&rfkill_global_led_trigger_work)){+.+.}-{0:0}, at: process_one_work+0x704/0x189c kernel/workqueue.c:3204 #2: ffff80008855a988 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_global_led_trigger_worker+0x2c/0x10c net/rfkill/core.c:182 4 locks held by kworker/1:2/3631: #0: ffff00000d428948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x6e0/0x189c kernel/workqueue.c:3204 #1: ffff8000a08f7ce0 ((work_completion)(&rfkill->sync_work)){+.+.}-{0:0}, at: process_one_work+0x704/0x189c kernel/workqueue.c:3204 #2: ffff80008855a988 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_sync_work+0x28/0x48 net/rfkill/core.c:1055 #3: ffff0000140de100 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1014 [inline] #3: ffff0000140de100 (&dev->mutex){....}-{4:4}, at: nfc_dev_down+0x2c/0x234 net/nfc/core.c:143 2 locks held by kworker/u8:1/6029: 1 lock held by syz.1.18084/7734: #0: ffff0000140de100 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1014 [inline] #0: ffff0000140de100 (&dev->mutex){....}-{4:4}, at: nfc_unregister_device+0x48/0x298 net/nfc/core.c:1165 4 locks held by udevd/7740: #0: ffff00001876b0a0 (&p->lock){+.+.}-{4:4}, at: seq_read_iter+0xb8/0xe3c fs/seq_file.c:182 #1: ffff00001727e488 (&of->mutex#2){+.+.}-{4:4}, at: kernfs_seq_start+0x48/0x1d8 fs/kernfs/file.c:154 #2: ffff00001409da58 (kn->active#4){++++}-{0:0}, at: kernfs_seq_start+0x64/0x1d8 fs/kernfs/file.c:155 #3: ffff0000140de100 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1014 [inline] #3: ffff0000140de100 (&dev->mutex){....}-{4:4}, at: uevent_show+0x118/0x300 drivers/base/core.c:2729 1 lock held by syz-executor/7794: 2 locks held by syz.0.18305/8265: =============================================