INFO: task kworker/0:1:10 blocked for more than 143 seconds. Not tainted 6.15.0-rc1-syzkaller-g2fe2b96c3818 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:1 task:kworker/0:1 state:D stack:0 pid:10 tgid:10 ppid:2 task_flags:0x4208060 flags:0x00000008 Workqueue: events rfkill_sync_work Call trace: __switch_to+0x414/0x788 arch/arm64/kernel/process.c:701 (T) context_switch kernel/sched/core.c:5382 [inline] __schedule+0x16a4/0x2c80 kernel/sched/core.c:6767 __schedule_loop kernel/sched/core.c:6845 [inline] schedule+0xbc/0x238 kernel/sched/core.c:6860 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6917 __mutex_lock_common+0xda8/0x2604 kernel/locking/mutex.c:678 __mutex_lock kernel/locking/mutex.c:746 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:798 device_lock include/linux/device.h:922 [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_sync net/rfkill/core.c:379 [inline] rfkill_sync_work+0x124/0x20c net/rfkill/core.c:1056 process_one_work+0x810/0x1638 kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3319 [inline] worker_thread+0x97c/0xf08 kernel/workqueue.c:3400 kthread+0x674/0x7dc kernel/kthread.c:464 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862 INFO: task kworker/0:1:10 is blocked on a mutex likely owned by task syz.1.144:7445. task:syz.1.144 state:D stack:0 pid:7445 tgid:7445 ppid:6476 task_flags:0x400040 flags:0x00000009 Call trace: __switch_to+0x414/0x788 arch/arm64/kernel/process.c:701 (T) context_switch kernel/sched/core.c:5382 [inline] __schedule+0x16a4/0x2c80 kernel/sched/core.c:6767 __schedule_loop kernel/sched/core.c:6845 [inline] schedule+0xbc/0x238 kernel/sched/core.c:6860 schedule_timeout+0xb4/0x2ac kernel/time/sleep_timeout.c:75 do_wait_for_common+0x310/0x47c kernel/sched/completion.c:95 __wait_for_common kernel/sched/completion.c:116 [inline] wait_for_common kernel/sched/completion.c:127 [inline] wait_for_completion+0x48/0x60 kernel/sched/completion.c:148 __flush_work+0x798/0x958 kernel/workqueue.c:4244 __cancel_work_sync kernel/workqueue.c:4364 [inline] cancel_work_sync+0xc4/0x120 kernel/workqueue.c:4401 rfkill_unregister+0x8c/0x210 net/rfkill/core.c:1139 nfc_unregister_device+0x98/0x290 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+0x340/0x760 fs/file_table.c:465 ____fput+0x20/0x58 fs/file_table.c:493 task_work_run+0x230/0x2e0 kernel/task_work.c:227 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:745 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 INFO: task udevd:6087 blocked for more than 143 seconds. Not tainted 6.15.0-rc1-syzkaller-g2fe2b96c3818 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:udevd state:D stack:0 pid:6087 tgid:6087 ppid:1 task_flags:0x400140 flags:0x0000000c Call trace: __switch_to+0x414/0x788 arch/arm64/kernel/process.c:701 (T) context_switch kernel/sched/core.c:5382 [inline] __schedule+0x16a4/0x2c80 kernel/sched/core.c:6767 __schedule_loop kernel/sched/core.c:6845 [inline] schedule+0xbc/0x238 kernel/sched/core.c:6860 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6917 __mutex_lock_common+0xda8/0x2604 kernel/locking/mutex.c:678 __mutex_lock kernel/locking/mutex.c:746 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:798 device_lock include/linux/device.h:922 [inline] uevent_show+0x178/0x338 drivers/base/core.c:2730 dev_attr_show+0x60/0xcc drivers/base/core.c:2424 sysfs_kf_seq_show+0x2bc/0x428 fs/sysfs/file.c:65 kernfs_seq_show+0x150/0x1fc fs/kernfs/file.c:205 seq_read_iter+0x3d0/0xc3c fs/seq_file.c:230 kernfs_fop_read_iter+0x144/0x5d8 fs/kernfs/file.c:279 new_sync_read fs/read_write.c:489 [inline] vfs_read+0x698/0x974 fs/read_write.c:570 ksys_read+0x15c/0x26c fs/read_write.c:713 __do_sys_read fs/read_write.c:722 [inline] __se_sys_read fs/read_write.c:720 [inline] __arm64_sys_read+0x7c/0x90 fs/read_write.c:720 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 INFO: task udevd:6087 is blocked on a mutex likely owned by task syz.1.144:7445. task:syz.1.144 state:D stack:0 pid:7445 tgid:7445 ppid:6476 task_flags:0x400040 flags:0x00000009 Call trace: __switch_to+0x414/0x788 arch/arm64/kernel/process.c:701 (T) context_switch kernel/sched/core.c:5382 [inline] __schedule+0x16a4/0x2c80 kernel/sched/core.c:6767 __schedule_loop kernel/sched/core.c:6845 [inline] schedule+0xbc/0x238 kernel/sched/core.c:6860 schedule_timeout+0xb4/0x2ac kernel/time/sleep_timeout.c:75 do_wait_for_common+0x310/0x47c kernel/sched/completion.c:95 __wait_for_common kernel/sched/completion.c:116 [inline] wait_for_common kernel/sched/completion.c:127 [inline] wait_for_completion+0x48/0x60 kernel/sched/completion.c:148 __flush_work+0x798/0x958 kernel/workqueue.c:4244 __cancel_work_sync kernel/workqueue.c:4364 [inline] cancel_work_sync+0xc4/0x120 kernel/workqueue.c:4401 rfkill_unregister+0x8c/0x210 net/rfkill/core.c:1139 nfc_unregister_device+0x98/0x290 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+0x340/0x760 fs/file_table.c:465 ____fput+0x20/0x58 fs/file_table.c:493 task_work_run+0x230/0x2e0 kernel/task_work.c:227 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:745 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 INFO: task kworker/0:3:6461 blocked for more than 143 seconds. Not tainted 6.15.0-rc1-syzkaller-g2fe2b96c3818 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:3 state:D stack:0 pid:6461 tgid:6461 ppid:2 task_flags:0x4208060 flags:0x00000008 Workqueue: events rfkill_global_led_trigger_worker Call trace: __switch_to+0x414/0x788 arch/arm64/kernel/process.c:701 (T) context_switch kernel/sched/core.c:5382 [inline] __schedule+0x16a4/0x2c80 kernel/sched/core.c:6767 __schedule_loop kernel/sched/core.c:6845 [inline] schedule+0xbc/0x238 kernel/sched/core.c:6860 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6917 __mutex_lock_common+0xda8/0x2604 kernel/locking/mutex.c:678 __mutex_lock kernel/locking/mutex.c:746 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:798 rfkill_global_led_trigger_worker+0x30/0xe4 net/rfkill/core.c:182 process_one_work+0x810/0x1638 kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3319 [inline] worker_thread+0x97c/0xf08 kernel/workqueue.c:3400 kthread+0x674/0x7dc kernel/kthread.c:464 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862 INFO: task kworker/0:3:6461 is blocked on a mutex likely owned by task kworker/0:1:10. task:kworker/0:1 state:D stack:0 pid:10 tgid:10 ppid:2 task_flags:0x4208060 flags:0x00000008 Workqueue: events rfkill_sync_work Call trace: __switch_to+0x414/0x788 arch/arm64/kernel/process.c:701 (T) context_switch kernel/sched/core.c:5382 [inline] __schedule+0x16a4/0x2c80 kernel/sched/core.c:6767 __schedule_loop kernel/sched/core.c:6845 [inline] schedule+0xbc/0x238 kernel/sched/core.c:6860 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6917 __mutex_lock_common+0xda8/0x2604 kernel/locking/mutex.c:678 __mutex_lock kernel/locking/mutex.c:746 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:798 device_lock include/linux/device.h:922 [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_sync net/rfkill/core.c:379 [inline] rfkill_sync_work+0x124/0x20c net/rfkill/core.c:1056 process_one_work+0x810/0x1638 kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3319 [inline] worker_thread+0x97c/0xf08 kernel/workqueue.c:3400 kthread+0x674/0x7dc kernel/kthread.c:464 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862 INFO: task syz.1.144:7445 blocked for more than 143 seconds. Not tainted 6.15.0-rc1-syzkaller-g2fe2b96c3818 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.1.144 state:D stack:0 pid:7445 tgid:7445 ppid:6476 task_flags:0x400040 flags:0x00000009 Call trace: __switch_to+0x414/0x788 arch/arm64/kernel/process.c:701 (T) context_switch kernel/sched/core.c:5382 [inline] __schedule+0x16a4/0x2c80 kernel/sched/core.c:6767 __schedule_loop kernel/sched/core.c:6845 [inline] schedule+0xbc/0x238 kernel/sched/core.c:6860 schedule_timeout+0xb4/0x2ac kernel/time/sleep_timeout.c:75 do_wait_for_common+0x310/0x47c kernel/sched/completion.c:95 __wait_for_common kernel/sched/completion.c:116 [inline] wait_for_common kernel/sched/completion.c:127 [inline] wait_for_completion+0x48/0x60 kernel/sched/completion.c:148 __flush_work+0x798/0x958 kernel/workqueue.c:4244 __cancel_work_sync kernel/workqueue.c:4364 [inline] cancel_work_sync+0xc4/0x120 kernel/workqueue.c:4401 rfkill_unregister+0x8c/0x210 net/rfkill/core.c:1139 nfc_unregister_device+0x98/0x290 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+0x340/0x760 fs/file_table.c:465 ____fput+0x20/0x58 fs/file_table.c:493 task_work_run+0x230/0x2e0 kernel/task_work.c:227 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:745 el0t_64_sync_handler+0x84/0x108 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: 4 locks held by kworker/0:1/10: #0: ffff0000c0028d48 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x674/0x1638 kernel/workqueue.c:3212 #1: ffff800098227b80 ((work_completion)(&rfkill->sync_work)){+.+.}-{0:0}, at: process_one_work+0x708/0x1638 kernel/workqueue.c:3212 #2: ffff80009335d948 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_sync_work+0x30/0x20c net/rfkill/core.c:1055 #3: ffff0000c6dcb100 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:922 [inline] #3: ffff0000c6dcb100 (&dev->mutex){....}-{4:4}, at: nfc_dev_down net/nfc/core.c:143 [inline] #3: ffff0000c6dcb100 (&dev->mutex){....}-{4:4}, at: nfc_rfkill_set_block+0x50/0x2d0 net/nfc/core.c:179 1 lock held by khungtaskd/32: #0: ffff800090127de0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:330 2 locks held by pr/ttyAMA0/46: 4 locks held by udevd/6087: #0: ffff0000d3bbe9e0 (&p->lock){+.+.}-{4:4}, at: seq_read_iter+0xac/0xc3c fs/seq_file.c:182 #1: ffff0000d0d20c88 (&of->mutex#2){+.+.}-{4:4}, at: kernfs_seq_start+0x58/0x384 fs/kernfs/file.c:154 #2: ffff0000cdba42d8 (kn->active#4){.+.+}-{0:0}, at: kernfs_seq_start+0x74/0x384 fs/kernfs/file.c:155 #3: ffff0000c6dcb100 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:922 [inline] #3: ffff0000c6dcb100 (&dev->mutex){....}-{4:4}, at: uevent_show+0x178/0x338 drivers/base/core.c:2730 2 locks held by getty/6224: #0: ffff0000d384c0a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80009c1ce2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x46c/0x123c drivers/tty/n_tty.c:2222 3 locks held by kworker/0:3/6461: #0: ffff0000c0028d48 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x674/0x1638 kernel/workqueue.c:3212 #1: ffff8000a42a7b80 ((work_completion)(&rfkill_global_led_trigger_work)){+.+.}-{0:0}, at: process_one_work+0x708/0x1638 kernel/workqueue.c:3212 #2: ffff80009335d948 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_global_led_trigger_worker+0x30/0xe4 net/rfkill/core.c:182 1 lock held by syz-executor/6471: #0: ffff80009335d948 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_unregister+0xb8/0x210 net/rfkill/core.c:1145 1 lock held by syz.1.144/7445: #0: ffff0000c6dcb100 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:922 [inline] #0: ffff0000c6dcb100 (&dev->mutex){....}-{4:4}, at: nfc_unregister_device+0x6c/0x290 net/nfc/core.c:1165 2 locks held by syz.3.225/7812: #0: ffff800091a73248 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x68/0x328 drivers/char/misc.c:143 #1: ffff80009335d948 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_fop_open+0x12c/0x778 net/rfkill/core.c:1178 1 lock held by syz-executor/7941: #0: ffff800091a73248 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x68/0x328 drivers/char/misc.c:143 1 lock held by syz.0.273/8095: #0: ffff800091a73248 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x68/0x328 drivers/char/misc.c:143 1 lock held by syz.2.281/8142: #0: ffff800091a73248 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x68/0x328 drivers/char/misc.c:143 1 lock held by syz-executor/8147: #0: ffff800091a73248 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x68/0x328 drivers/char/misc.c:143 1 lock held by syz-executor/8149: #0: ffff800091a73248 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x68/0x328 drivers/char/misc.c:143 1 lock held by syz-executor/8151: #0: ffff800091a73248 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x68/0x328 drivers/char/misc.c:143 1 lock held by syz-executor/8153: #0: ffff800091a73248 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x68/0x328 drivers/char/misc.c:143 1 lock held by syz-executor/8156: #0: ffff800091a73248 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x68/0x328 drivers/char/misc.c:143 1 lock held by syz-executor/8158: #0: ffff800091a73248 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x68/0x328 drivers/char/misc.c:143 1 lock held by syz-executor/8160: #0: ffff800091a73248 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x68/0x328 drivers/char/misc.c:143 1 lock held by syz-executor/8162: #0: ffff800091a73248 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x68/0x328 drivers/char/misc.c:143 1 lock held by syz-executor/8164: #0: ffff800091a73248 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x68/0x328 drivers/char/misc.c:143 1 lock held by syz-executor/8167: #0: ffff800091a73248 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x68/0x328 drivers/char/misc.c:143 1 lock held by syz-executor/8174: #0: ffff800091a73248 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x68/0x328 drivers/char/misc.c:143 =============================================