INFO: task kworker/1:0:4965 blocked for more than 430 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:0     state:D stack:0     pid:4965  tgid:4965  ppid:2      task_flags:0x4208060 flags:0x00000000
Workqueue: events rfkill_sync_work
Call Trace:
[<ffffffff86413d82>] context_switch kernel/sched/core.c:5357 [inline]
[<ffffffff86413d82>] __schedule+0x1068/0x405a kernel/sched/core.c:6961
[<ffffffff86416e38>] __schedule_loop kernel/sched/core.c:7043 [inline]
[<ffffffff86416e38>] schedule+0xc4/0x35e kernel/sched/core.c:7058
[<ffffffff864177bc>] schedule_preempt_disabled+0x16/0x28 kernel/sched/core.c:7115
[<ffffffff8641f60a>] __mutex_lock_common kernel/locking/mutex.c:676 [inline]
[<ffffffff8641f60a>] __mutex_lock+0xb7e/0x19f2 kernel/locking/mutex.c:760
[<ffffffff86420492>] mutex_lock_nested+0x14/0x1c kernel/locking/mutex.c:812
[<ffffffff861ea0f0>] device_lock include/linux/device.h:911 [inline]
[<ffffffff861ea0f0>] nfc_dev_down+0x3a/0x29a net/nfc/core.c:143
[<ffffffff861ea394>] nfc_rfkill_set_block+0x44/0xf0 net/nfc/core.c:179
[<ffffffff8611178a>] rfkill_set_block+0x1cc/0x500 net/rfkill/core.c:346
[<ffffffff86112580>] rfkill_sync+0x12a/0x1ce net/rfkill/core.c:379
[<ffffffff861127aa>] rfkill_sync_work+0x32/0x48 net/rfkill/core.c:1056
[<ffffffff801cf50c>] process_one_work+0x842/0x1ea4 kernel/workqueue.c:3236
[<ffffffff801d1bb8>] process_scheduled_works kernel/workqueue.c:3319 [inline]
[<ffffffff801d1bb8>] worker_thread+0x5d2/0xdec kernel/workqueue.c:3400
[<ffffffff801ec406>] kthread+0x3a4/0x7e0 kernel/kthread.c:463
[<ffffffff8006a9c4>] ret_from_fork_kernel+0x2a/0xbb4 arch/riscv/kernel/process.c:214
[<ffffffff86432ece>] ret_from_fork_kernel_asm+0x16/0x18 arch/riscv/kernel/entry.S:328
INFO: task kworker/1:1:6980 blocked for more than 430 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:1     state:D stack:0     pid:6980  tgid:6980  ppid:2      task_flags:0x4208060 flags:0x00000000
Workqueue: events rfkill_global_led_trigger_worker
Call Trace:
[<ffffffff86413d82>] context_switch kernel/sched/core.c:5357 [inline]
[<ffffffff86413d82>] __schedule+0x1068/0x405a kernel/sched/core.c:6961
[<ffffffff86416e38>] __schedule_loop kernel/sched/core.c:7043 [inline]
[<ffffffff86416e38>] schedule+0xc4/0x35e kernel/sched/core.c:7058
[<ffffffff864177bc>] schedule_preempt_disabled+0x16/0x28 kernel/sched/core.c:7115
[<ffffffff8641f60a>] __mutex_lock_common kernel/locking/mutex.c:676 [inline]
[<ffffffff8641f60a>] __mutex_lock+0xb7e/0x19f2 kernel/locking/mutex.c:760
[<ffffffff86420492>] mutex_lock_nested+0x14/0x1c kernel/locking/mutex.c:812
[<ffffffff8610f49a>] rfkill_global_led_trigger_worker+0x2c/0x17a net/rfkill/core.c:182
[<ffffffff801cf50c>] process_one_work+0x842/0x1ea4 kernel/workqueue.c:3236
[<ffffffff801d1bb8>] process_scheduled_works kernel/workqueue.c:3319 [inline]
[<ffffffff801d1bb8>] worker_thread+0x5d2/0xdec kernel/workqueue.c:3400
[<ffffffff801ec406>] kthread+0x3a4/0x7e0 kernel/kthread.c:463
[<ffffffff8006a9c4>] ret_from_fork_kernel+0x2a/0xbb4 arch/riscv/kernel/process.c:214
[<ffffffff86432ece>] ret_from_fork_kernel_asm+0x16/0x18 arch/riscv/kernel/entry.S:328
INFO: task syz.1.1184:7281 blocked for more than 430 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.1184      state:D stack:0     pid:7281  tgid:7281  ppid:3204   task_flags:0x400040 flags:0x00000008
Call Trace:
[<ffffffff86413d82>] context_switch kernel/sched/core.c:5357 [inline]
[<ffffffff86413d82>] __schedule+0x1068/0x405a kernel/sched/core.c:6961
[<ffffffff86416e38>] __schedule_loop kernel/sched/core.c:7043 [inline]
[<ffffffff86416e38>] schedule+0xc4/0x35e kernel/sched/core.c:7058
[<ffffffff864177bc>] schedule_preempt_disabled+0x16/0x28 kernel/sched/core.c:7115
[<ffffffff8641f60a>] __mutex_lock_common kernel/locking/mutex.c:676 [inline]
[<ffffffff8641f60a>] __mutex_lock+0xb7e/0x19f2 kernel/locking/mutex.c:760
[<ffffffff86420492>] mutex_lock_nested+0x14/0x1c kernel/locking/mutex.c:812
[<ffffffff86110498>] rfkill_fop_release+0x4c/0x2f0 net/rfkill/core.c:1327
[<ffffffff80c28154>] __fput+0x382/0xa8c fs/file_table.c:468
[<ffffffff80c2890c>] ____fput+0x1c/0x26 fs/file_table.c:496
[<ffffffff801e64cc>] task_work_run+0x16a/0x25e kernel/task_work.c:227
[<ffffffff803c3652>] resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
[<ffffffff803c3652>] exit_to_user_mode_loop+0x118/0x134 kernel/entry/common.c:43
[<ffffffff86409510>] exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline]
[<ffffffff86409510>] syscall_exit_to_user_mode_work include/linux/entry-common.h:175 [inline]
[<ffffffff86409510>] syscall_exit_to_user_mode include/linux/entry-common.h:210 [inline]
[<ffffffff86409510>] do_trap_ecall_u+0x3f0/0x530 arch/riscv/kernel/traps.c:357
[<ffffffff86432dae>] handle_exception+0x146/0x152 arch/riscv/kernel/entry.S:198
INFO: task syz.1.1184:7283 blocked for more than 431 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.1184      state:D stack:0     pid:7283  tgid:7281  ppid:3204   task_flags:0x400140 flags:0x00000008
Call Trace:
[<ffffffff86413d82>] context_switch kernel/sched/core.c:5357 [inline]
[<ffffffff86413d82>] __schedule+0x1068/0x405a kernel/sched/core.c:6961
[<ffffffff86416e38>] __schedule_loop kernel/sched/core.c:7043 [inline]
[<ffffffff86416e38>] schedule+0xc4/0x35e kernel/sched/core.c:7058
[<ffffffff8642c9e2>] schedule_timeout+0x1c6/0x2b2 kernel/time/sleep_timeout.c:75
[<ffffffff86418a02>] do_wait_for_common+0x1c2/0x3d0 kernel/sched/completion.c:100
[<ffffffff86418c50>] __wait_for_common kernel/sched/completion.c:121 [inline]
[<ffffffff86418c50>] wait_for_common kernel/sched/completion.c:132 [inline]
[<ffffffff86418c50>] wait_for_completion+0x40/0x52 kernel/sched/completion.c:153
[<ffffffff801cc19e>] __flush_work+0x64c/0xd56 kernel/workqueue.c:4244
[<ffffffff801d4338>] __cancel_work_sync+0x136/0x15a kernel/workqueue.c:4364
[<ffffffff801d4378>] cancel_work_sync+0x1c/0x26 kernel/workqueue.c:4401
[<ffffffff86113464>] rfkill_unregister+0x98/0x2aa net/rfkill/core.c:1139
[<ffffffff861e84d4>] nfc_unregister_device+0x9e/0x322 net/nfc/core.c:1167
[<ffffffff8620f208>] nci_unregister_device+0x1ec/0x29e net/nfc/nci/core.c:1323
[<ffffffff82d1df70>] virtual_ncidev_close+0x4e/0xae drivers/nfc/virtual_ncidev.c:172
[<ffffffff80c28154>] __fput+0x382/0xa8c fs/file_table.c:468
[<ffffffff80c2890c>] ____fput+0x1c/0x26 fs/file_table.c:496
[<ffffffff801e64cc>] task_work_run+0x16a/0x25e kernel/task_work.c:227
[<ffffffff803c3652>] resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
[<ffffffff803c3652>] exit_to_user_mode_loop+0x118/0x134 kernel/entry/common.c:43
[<ffffffff86409510>] exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline]
[<ffffffff86409510>] syscall_exit_to_user_mode_work include/linux/entry-common.h:175 [inline]
[<ffffffff86409510>] syscall_exit_to_user_mode include/linux/entry-common.h:210 [inline]
[<ffffffff86409510>] do_trap_ecall_u+0x3f0/0x530 arch/riscv/kernel/traps.c:357
[<ffffffff86432dae>] handle_exception+0x146/0x152 arch/riscv/kernel/entry.S:198

Showing all locks held in the system:
1 lock held by khungtaskd/37:
 #0: ffffffff885dcf40 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2a/0x1a0 kernel/locking/lockdep.c:6771
2 locks held by syslogd/3016:
1 lock held by klogd/3020:
2 locks held by getty/3171:
 #0: ffffaf8018e6e0a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3a/0x46 drivers/tty/tty_ldsem.c:340
 #1: ffff8f800008e2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x3e4/0x12ba drivers/tty/n_tty.c:2222
2 locks held by syz-executor/3198:
3 locks held by kworker/u9:2/4264:
4 locks held by kworker/1:0/4965:
 #0: ffffaf8011e80d48 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x720/0x1ea4 kernel/workqueue.c:3211
 #1: ffff8f8005e37b70 ((work_completion)(&rfkill->sync_work)){+.+.}-{0:0}, at: process_one_work+0x748/0x1ea4 kernel/workqueue.c:3211
 #2: ffffffff89cda528 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_sync_work+0x2a/0x48 net/rfkill/core.c:1055
 #3: ffffaf8019863100 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:911 [inline]
 #3: ffffaf8019863100 (&dev->mutex){....}-{4:4}, at: nfc_dev_down+0x3a/0x29a net/nfc/core.c:143
3 locks held by kworker/u9:6/5940:
5 locks held by kworker/u10:1/6225:
3 locks held by kworker/u9:1/6592:
3 locks held by kworker/0:1/6644:
3 locks held by kworker/1:1/6980:
 #0: ffffaf8011e80d48 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x720/0x1ea4 kernel/workqueue.c:3211
 #1: ffff8f8003727b70 ((work_completion)(&rfkill_global_led_trigger_work)){+.+.}-{0:0}, at: process_one_work+0x748/0x1ea4 kernel/workqueue.c:3211
 #2: ffffffff89cda528 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_global_led_trigger_worker+0x2c/0x17a net/rfkill/core.c:182
3 locks held by kworker/0:3/7109:
1 lock held by syz.1.1184/7281:
 #0: ffffffff89cda528 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_fop_release+0x4c/0x2f0 net/rfkill/core.c:1327
1 lock held by syz.1.1184/7283:
 #0: ffffaf8019863100 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:911 [inline]
 #0: ffffaf8019863100 (&dev->mutex){....}-{4:4}, at: nfc_unregister_device+0x6e/0x322 net/nfc/core.c:1165
1 lock held by syz-executor/7305:
1 lock held by syz-executor/7738:

=============================================

NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 37 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT 
Hardware name: riscv-virtio,qemu (DT)
Call Trace:
[<ffffffff8007a45c>] dump_backtrace+0x2e/0x3c arch/riscv/kernel/stacktrace.c:132
[<ffffffff8000329a>] show_stack+0x30/0x3c arch/riscv/kernel/stacktrace.c:138
[<ffffffff8006229c>] __dump_stack lib/dump_stack.c:94 [inline]
[<ffffffff8006229c>] dump_stack_lvl+0x12e/0x1a6 lib/dump_stack.c:120
[<ffffffff80062330>] dump_stack+0x1c/0x24 lib/dump_stack.c:129
[<ffffffff863cb43c>] nmi_cpu_backtrace+0x3b0/0x3b2 lib/nmi_backtrace.c:113
[<ffffffff863cb6f4>] nmi_trigger_cpumask_backtrace+0x2b6/0x458 lib/nmi_backtrace.c:62
[<ffffffff80088262>] arch_trigger_cpumask_backtrace+0x2c/0x42 arch/riscv/kernel/smp.c:350
[<ffffffff80500a54>] trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
[<ffffffff80500a54>] check_hung_uninterruptible_tasks kernel/hung_task.c:328 [inline]
[<ffffffff80500a54>] watchdog+0xc56/0x1138 kernel/hung_task.c:491
[<ffffffff801ec406>] kthread+0x3a4/0x7e0 kernel/kthread.c:463
[<ffffffff8006a9c4>] ret_from_fork_kernel+0x2a/0xbb4 arch/riscv/kernel/process.c:214
[<ffffffff86432ece>] ret_from_fork_kernel_asm+0x16/0x18 arch/riscv/kernel/entry.S:328
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 3196 Comm: sshd Not tainted syzkaller #0 PREEMPT 
Hardware name: riscv-virtio,qemu (DT)
epc : pie_calculate_probability+0x69e/0x7ce net/sched/sch_pie.c:374
 ra : pie_calculate_probability+0x69e/0x7ce net/sched/sch_pie.c:374
epc : ffffffff8551caae ra : ffffffff8551caae sp : ffff8f80000178f0
 gp : ffffffff89e99e80 tp : ffffaf8018f70000 t0 : ffff8f80000178e0
 t1 : fffff1ef00002f18 t2 : 0000000000000000 s0 : ffff8f8000017990
 s1 : ffff8f800ef52020 a0 : 0000000000000000 a1 : ffffaf8018f70000
 a2 : 00000000000f0000 a3 : 0000000000f00000 a4 : 0000000000000003
 a5 : 0000000000000000 a6 : fffff1ef00002f19 a7 : 0000000000000003
 s2 : ffffaf801c6e8b00 s3 : 0000000000000000 s4 : 00000000003b9aca
 s5 : 0000000000000000 s6 : fffffff0a3da8872 s7 : 0000000000000000
 s8 : 00051eb851eb851e s9 : 0000000000000000 s10: 0000000000000000
 s11: ffff8f800ef52028 t3 : e37789cb00000000 t4 : fffff1ef00002f18
 t5 : fffff1ef00002f19 t6 : 0000000000000002
status: 0000000200000120 badaddr: 0000000000000000 cause: 8000000000000001
[<ffffffff8551caae>] pie_calculate_probability+0x69e/0x7ce net/sched/sch_pie.c:374
[<ffffffff8552171e>] fq_pie_timer+0x20e/0x5e0 net/sched/sch_fq_pie.c:400
[<ffffffff803ef0ca>] call_timer_fn+0x202/0xab8 kernel/time/timer.c:1747
[<ffffffff803f00ea>] expire_timers kernel/time/timer.c:1798 [inline]
[<ffffffff803f00ea>] __run_timers+0x76a/0xd42 kernel/time/timer.c:2372
[<ffffffff803f07f8>] __run_timer_base kernel/time/timer.c:2384 [inline]
[<ffffffff803f07f8>] __run_timer_base kernel/time/timer.c:2376 [inline]
[<ffffffff803f07f8>] run_timer_base+0x136/0x1b6 kernel/time/timer.c:2393
[<ffffffff803f0894>] run_timer_softirq+0x1c/0x54 kernel/time/timer.c:2403
[<ffffffff8016b742>] handle_softirqs+0x4b2/0x132e kernel/softirq.c:579
[<ffffffff8016c88e>] __do_softirq kernel/softirq.c:613 [inline]
[<ffffffff8016c88e>] invoke_softirq kernel/softirq.c:453 [inline]
[<ffffffff8016c88e>] __irq_exit_rcu+0x18c/0x550 kernel/softirq.c:680
[<ffffffff8016e29c>] irq_exit_rcu+0x10/0xf8 kernel/softirq.c:696
[<ffffffff86408af0>] handle_riscv_irq+0x40/0x4c arch/riscv/kernel/traps.c:390
[<ffffffff86432f16>] call_on_irq_stack+0x32/0x40 arch/riscv/kernel/entry.S:361