INFO: task kworker/0:2:962 blocked for more than 430 seconds. Not tainted 6.15.0-syzkaller-09113-g8477ab143069 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:2 state:D stack:0 pid:962 tgid:962 ppid:2 task_flags:0x4208060 flags:0x00000010 Workqueue: events rfkill_sync_work Call trace: __switch_to+0x208/0x4f4 arch/arm64/kernel/process.c:735 (T) context_switch kernel/sched/core.c:5392 [inline] __schedule+0xd34/0x3184 kernel/sched/core.c:6781 __schedule_loop kernel/sched/core.c:6859 [inline] schedule+0xd0/0x344 kernel/sched/core.c:6874 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6931 __mutex_lock_common kernel/locking/mutex.c:678 [inline] __mutex_lock+0x5d8/0x9d8 kernel/locking/mutex.c:746 mutex_lock_nested+0x24/0x30 kernel/locking/mutex.c:798 device_lock include/linux/device.h:884 [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+0x7cc/0x18d4 kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3321 [inline] worker_thread+0x734/0xb84 kernel/workqueue.c:3402 kthread+0x348/0x5fc kernel/kthread.c:464 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862 INFO: task kworker/0:0:9537 blocked for more than 430 seconds. Not tainted 6.15.0-syzkaller-09113-g8477ab143069 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:0 state:D stack:0 pid:9537 tgid:9537 ppid:2 task_flags:0x4208060 flags:0x00000010 Workqueue: events rfkill_global_led_trigger_worker Call trace: __switch_to+0x208/0x4f4 arch/arm64/kernel/process.c:735 (T) context_switch kernel/sched/core.c:5392 [inline] __schedule+0xd34/0x3184 kernel/sched/core.c:6781 __schedule_loop kernel/sched/core.c:6859 [inline] schedule+0xd0/0x344 kernel/sched/core.c:6874 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6931 __mutex_lock_common kernel/locking/mutex.c:678 [inline] __mutex_lock+0x5d8/0x9d8 kernel/locking/mutex.c:746 mutex_lock_nested+0x24/0x30 kernel/locking/mutex.c:798 rfkill_global_led_trigger_worker+0x2c/0x10c net/rfkill/core.c:182 process_one_work+0x7cc/0x18d4 kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3321 [inline] worker_thread+0x734/0xb84 kernel/workqueue.c:3402 kthread+0x348/0x5fc kernel/kthread.c:464 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862 INFO: task syz.1.2865:10975 blocked for more than 430 seconds. Not tainted 6.15.0-syzkaller-09113-g8477ab143069 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.1.2865 state:D stack:0 pid:10975 tgid:10975 ppid:9362 task_flags:0x400040 flags:0x00000011 Call trace: __switch_to+0x208/0x4f4 arch/arm64/kernel/process.c:735 (T) context_switch kernel/sched/core.c:5392 [inline] __schedule+0xd34/0x3184 kernel/sched/core.c:6781 __schedule_loop kernel/sched/core.c:6859 [inline] schedule+0xd0/0x344 kernel/sched/core.c:6874 schedule_timeout+0x1ec/0x224 kernel/time/sleep_timeout.c:75 do_wait_for_common kernel/sched/completion.c:95 [inline] __wait_for_common+0x1d0/0x3f8 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+0x488/0x954 kernel/workqueue.c:4246 __cancel_work_sync+0xb0/0x108 kernel/workqueue.c:4366 cancel_work_sync+0x14/0x20 kernel/workqueue.c:4403 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+0x2c8/0x954 fs/file_table.c:465 ____fput+0x14/0x20 fs/file_table.c:493 task_work_run+0x128/0x210 kernel/task_work.c:227 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] do_notify_resume+0x1dc/0x264 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+0x118/0x198 arch/arm64/kernel/entry-common.c:768 el0t_64_sync_handler+0x10c/0x138 arch/arm64/kernel/entry-common.c:786 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 Showing all locks held in the system: 1 lock held by khungtaskd/33: #0: ffff80008733fd60 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x18/0x1c4 kernel/locking/lockdep.c:6764 4 locks held by kworker/0:2/962: #0: ffff00000dc28d48 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x6f8/0x18d4 kernel/workqueue.c:3213 #1: ffff80008ef97c80 ((work_completion)(&rfkill->sync_work)){+.+.}-{0:0}, at: process_one_work+0x71c/0x18d4 kernel/workqueue.c:3213 #2: ffff800088acb288 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_sync_work+0x28/0x48 net/rfkill/core.c:1055 #3: ffff00001f942100 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:884 [inline] #3: ffff00001f942100 (&dev->mutex){....}-{4:4}, at: nfc_dev_down+0x2c/0x234 net/nfc/core.c:143 2 locks held by kworker/u8:6/1207: #0: ffff00000dc31148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x6f8/0x18d4 kernel/workqueue.c:3213 #1: ffff80008f447c80 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work+0x71c/0x18d4 kernel/workqueue.c:3213 1 lock held by syslogd/3112: 2 locks held by getty/3251: #0: ffff000012e920a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80008d5db2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x3e4/0xdb4 drivers/tty/n_tty.c:2222 2 locks held by syz-executor/3307: 3 locks held by kworker/0:0/9537: #0: ffff00000dc28d48 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x6f8/0x18d4 kernel/workqueue.c:3213 #1: ffff80008dea7c80 ((work_completion)(&rfkill_global_led_trigger_work)){+.+.}-{0:0}, at: process_one_work+0x71c/0x18d4 kernel/workqueue.c:3213 #2: ffff800088acb288 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_global_led_trigger_worker+0x2c/0x10c net/rfkill/core.c:182 1 lock held by syz.1.2865/10975: #0: ffff00001f942100 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:884 [inline] #0: ffff00001f942100 (&dev->mutex){....}-{4:4}, at: nfc_unregister_device+0x48/0x298 net/nfc/core.c:1165 6 locks held by kworker/u8:8/12339: #0: ffff00000e162948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x6f8/0x18d4 kernel/workqueue.c:3213 #1: ffff8000a0397c80 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x71c/0x18d4 kernel/workqueue.c:3213 #2: ffff800088890270 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0xc8/0x750 net/core/net_namespace.c:662 #3: ffff00001fe2a0e8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:884 [inline] #3: ffff00001fe2a0e8 (&dev->mutex){....}-{4:4}, at: devl_dev_lock net/devlink/devl_internal.h:108 [inline] #3: ffff00001fe2a0e8 (&dev->mutex){....}-{4:4}, at: devlink_pernet_pre_exit+0x108/0x23c net/devlink/core.c:506 #4: ffff00001fe2d250 (&devlink->lock_key#7){+.+.}-{4:4}, at: devl_lock net/devlink/core.c:276 [inline] #4: ffff00001fe2d250 (&devlink->lock_key#7){+.+.}-{4:4}, at: devl_dev_lock net/devlink/devl_internal.h:109 [inline] #4: ffff00001fe2d250 (&devlink->lock_key#7){+.+.}-{4:4}, at: devlink_pernet_pre_exit+0x114/0x23c net/devlink/core.c:506 #5: ffff8000888a4e68 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x1c/0x28 net/core/rtnetlink.c:80 5 locks held by syz-executor/13016: 1 lock held by udevd/13054: 3 locks held by cmp/13063: =============================================