INFO: task kworker/1:1:13325 blocked for more than 430 seconds. Not tainted 6.16.0-rc3-syzkaller-00121-gf02769e7f272 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:1 state:D stack:0 pid:13325 tgid:13325 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:737 (T) context_switch kernel/sched/core.c:5396 [inline] __schedule+0xd34/0x3184 kernel/sched/core.c:6785 __schedule_loop kernel/sched/core.c:6863 [inline] schedule+0xd0/0x344 kernel/sched/core.c:6878 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6935 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0x5d8/0x9d8 kernel/locking/mutex.c:747 mutex_lock_nested+0x24/0x30 kernel/locking/mutex.c:799 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.0.5189:14031 blocked for more than 430 seconds. Not tainted 6.16.0-rc3-syzkaller-00121-gf02769e7f272 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.0.5189 state:D stack:0 pid:14031 tgid:14031 ppid:3419 task_flags:0x400040 flags:0x00000011 Call trace: __switch_to+0x208/0x4f4 arch/arm64/kernel/process.c:737 (T) context_switch kernel/sched/core.c:5396 [inline] __schedule+0xd34/0x3184 kernel/sched/core.c:6785 __schedule_loop kernel/sched/core.c:6863 [inline] schedule+0xd0/0x344 kernel/sched/core.c:6878 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6935 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0x5d8/0x9d8 kernel/locking/mutex.c:747 mutex_lock_nested+0x24/0x30 kernel/locking/mutex.c:799 rfkill_unregister+0xb8/0x240 net/rfkill/core.c:1145 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 INFO: task syz.1.5188:14037 blocked for more than 430 seconds. Not tainted 6.16.0-rc3-syzkaller-00121-gf02769e7f272 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.1.5188 state:D stack:0 pid:14037 tgid:14032 ppid:3420 task_flags:0x400040 flags:0x00000011 Call trace: __switch_to+0x208/0x4f4 arch/arm64/kernel/process.c:737 (T) context_switch kernel/sched/core.c:5396 [inline] __schedule+0xd34/0x3184 kernel/sched/core.c:6785 __schedule_loop kernel/sched/core.c:6863 [inline] schedule+0xd0/0x344 kernel/sched/core.c:6878 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6935 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0x5d8/0x9d8 kernel/locking/mutex.c:747 mutex_lock_nested+0x24/0x30 kernel/locking/mutex.c:799 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_fop_write+0x218/0x554 net/rfkill/core.c:1301 vfs_write+0x1d8/0xad4 fs/read_write.c:684 ksys_write+0x18c/0x1d8 fs/read_write.c:738 __do_sys_write fs/read_write.c:749 [inline] __se_sys_write fs/read_write.c:746 [inline] __arm64_sys_write+0x6c/0x9c fs/read_write.c:746 __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+0x50/0x198 arch/arm64/kernel/entry-common.c:767 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: 2 locks held by pr/ttyAMA0/31: 1 lock held by khungtaskd/32: #0: ffff8000872c0660 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x18/0x1c4 kernel/locking/lockdep.c:6764 1 lock held by klogd/3106: 2 locks held by getty/3242: #0: ffff0000139d00a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80008d58b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x3e8/0xdc0 drivers/tty/n_tty.c:2222 2 locks held by kworker/0:5/5963: #0: ffff00006a0a9e58 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2c/0x44 kernel/sched/core.c:606 #1: ffff00006a095388 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x244/0x758 kernel/sched/psi.c:987 3 locks held by kworker/1:1/13325: #0: ffff00000dc28d48 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x6f8/0x18d4 kernel/workqueue.c:3213 #1: ffff8000a04e7c80 ((work_completion)(&rfkill_global_led_trigger_work)){+.+.}-{0:0}, at: process_one_work+0x71c/0x18d4 kernel/workqueue.c:3213 #2: ffff800088a7b8a8 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_global_led_trigger_worker+0x2c/0x10c net/rfkill/core.c:182 2 locks held by syz.0.5189/14031: #0: ffff0000203af100 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:884 [inline] #0: ffff0000203af100 (&dev->mutex){....}-{4:4}, at: nfc_unregister_device+0x48/0x298 net/nfc/core.c:1165 #1: ffff800088a7b8a8 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_unregister+0xb8/0x240 net/rfkill/core.c:1145 2 locks held by syz.1.5188/14037: #0: ffff800088a7b8a8 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_fop_write+0x134/0x554 net/rfkill/core.c:1293 #1: ffff0000203af100 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:884 [inline] #1: ffff0000203af100 (&dev->mutex){....}-{4:4}, at: nfc_dev_down+0x2c/0x234 net/nfc/core.c:143 2 locks held by syz.2.5375/14561: #0: ffff800087af2068 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x64/0x35c drivers/char/misc.c:125 #1: ffff800088a7b8a8 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_fop_open+0x11c/0x62c net/rfkill/core.c:1178 1 lock held by syz.3.5421/14654: #0: ffff800087af2068 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x64/0x35c drivers/char/misc.c:125 1 lock held by syz-executor/14657: #0: ffff800087af2068 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x64/0x35c drivers/char/misc.c:125 1 lock held by syz-executor/14667: #0: ffff800087af2068 (misc_mtx){+.+.}-{4:4}, at: misc_open+0x64/0x35c drivers/char/misc.c:125 =============================================