INFO: task kworker/0:3:25496 blocked for more than 436 seconds. Not tainted 6.12.0-syzkaller-12113-gbcc8eda6d349 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:3 state:D stack:0 pid:25496 tgid:25496 ppid:2 flags:0x00000008 Workqueue: events rfkill_sync_work 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 device_lock include/linux/device.h:1014 [inline] nfc_dev_down+0x2c/0x234 net/nfc/core.c:143 nfc_rfkill_set_block+0x28/0xb8 net/nfc/core.c:179 rfkill_set_block+0x160/0x3c4 net/rfkill/core.c:346 rfkill_sync+0x104/0x1ac net/rfkill/core.c:379 rfkill_sync_work+0x30/0x48 net/rfkill/core.c:1056 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 kworker/1:2:29956 blocked for more than 436 seconds. Not tainted 6.12.0-syzkaller-12113-gbcc8eda6d349 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:2 state:D stack:0 pid:29956 tgid:29956 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.2.16848:5306 blocked for more than 436 seconds. Not tainted 6.12.0-syzkaller-12113-gbcc8eda6d349 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.2.16848 state:D stack:0 pid:5306 tgid:5306 ppid:3421 flags:0x00000009 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+0x100/0x180 arch/arm64/kernel/entry-common.c:745 el0t_64_sync_handler+0x10c/0x138 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 INFO: task udevd:5313 blocked for more than 436 seconds. Not tainted 6.12.0-syzkaller-12113-gbcc8eda6d349 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:udevd state:D stack:0 pid:5313 tgid:5313 ppid:3098 flags:0x00000005 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 device_lock include/linux/device.h:1014 [inline] uevent_show+0x118/0x300 drivers/base/core.c:2729 dev_attr_show+0x48/0xcc drivers/base/core.c:2423 sysfs_kf_seq_show+0x184/0x32c fs/sysfs/file.c:59 kernfs_seq_show+0x104/0x154 fs/kernfs/file.c:205 seq_read_iter+0x350/0xe3c fs/seq_file.c:230 kernfs_fop_read_iter+0x304/0x45c fs/kernfs/file.c:279 new_sync_read fs/read_write.c:484 [inline] vfs_read+0x5c0/0x978 fs/read_write.c:565 ksys_read+0xec/0x1d8 fs/read_write.c:708 __do_sys_read fs/read_write.c:717 [inline] __se_sys_read fs/read_write.c:715 [inline] __arm64_sys_read+0x6c/0x9c fs/read_write.c:715 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x6c/0x258 arch/arm64/kernel/syscall.c:49 el0_svc_common.constprop.0+0xac/0x230 arch/arm64/kernel/syscall.c:132 do_el0_svc+0x40/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x50/0x180 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x10c/0x138 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 Showing all locks held in the system: 1 lock held by khungtaskd/30: #0: ffff800086f89760 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x44/0x2d0 kernel/locking/lockdep.c:6738 1 lock held by udevd/3098: 2 locks held by getty/3218: #0: ffff0000183080a0 (&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 4 locks held by kworker/0:3/25496: #0: ffff00000d428948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x6e0/0x189c kernel/workqueue.c:3204 #1: ffff80008daf7ce0 ((work_completion)(&rfkill->sync_work)){+.+.}-{0:0}, at: process_one_work+0x704/0x189c kernel/workqueue.c:3204 #2: ffff800088559488 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_sync_work+0x28/0x48 net/rfkill/core.c:1055 #3: ffff00001cc31100 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1014 [inline] #3: ffff00001cc31100 (&dev->mutex){....}-{4:4}, at: nfc_dev_down+0x2c/0x234 net/nfc/core.c:143 3 locks held by kworker/1:2/29956: #0: ffff00000d428948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x6e0/0x189c kernel/workqueue.c:3204 #1: ffff8000a08c7ce0 ((work_completion)(&rfkill_global_led_trigger_work)){+.+.}-{0:0}, at: process_one_work+0x704/0x189c kernel/workqueue.c:3204 #2: ffff800088559488 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_global_led_trigger_worker+0x2c/0x10c net/rfkill/core.c:182 4 locks held by kworker/u8:3/4665: 1 lock held by syz.2.16848/5306: #0: ffff00001cc31100 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1014 [inline] #0: ffff00001cc31100 (&dev->mutex){....}-{4:4}, at: nfc_unregister_device+0x48/0x298 net/nfc/core.c:1165 4 locks held by udevd/5313: #0: ffff000012c81540 (&p->lock){+.+.}-{4:4}, at: seq_read_iter+0xb8/0xe3c fs/seq_file.c:182 #1: ffff000012bacc88 (&of->mutex#2){+.+.}-{4:4}, at: kernfs_seq_start+0x48/0x1d8 fs/kernfs/file.c:154 #2: ffff000017a535a8 (kn->active#4){++++}-{0:0}, at: kernfs_seq_start+0x64/0x1d8 fs/kernfs/file.c:155 #3: ffff00001cc31100 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1014 [inline] #3: ffff00001cc31100 (&dev->mutex){....}-{4:4}, at: uevent_show+0x118/0x300 drivers/base/core.c:2729 =============================================