INFO: task kworker/1:2:793 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:2     state:D stack:22352 pid:793   tgid:793   ppid:2      task_flags:0x4208060 flags:0x00004000
Workqueue: events rfkill_global_led_trigger_worker
Call Trace:
 <TASK>
 __schedule+0x1798/0x4cc0
 schedule+0x165/0x360
 schedule_preempt_disabled+0x13/0x30
 __mutex_lock+0x7e6/0x1350
 rfkill_global_led_trigger_worker+0x27/0xd0
 process_scheduled_works+0xae1/0x17b0
 worker_thread+0x8a0/0xda0
 kthread+0x711/0x8a0
 ret_from_fork+0x3fc/0x770
 ret_from_fork_asm+0x1a/0x30
 </TASK>
INFO: task kworker/1:3:5880 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:3     state:D stack:24072 pid:5880  tgid:5880  ppid:2      task_flags:0x4208060 flags:0x00004000
Workqueue: events rfkill_sync_work
Call Trace:
 <TASK>
 __schedule+0x1798/0x4cc0
 schedule+0x165/0x360
 schedule_preempt_disabled+0x13/0x30
 __mutex_lock+0x7e6/0x1350
 nfc_rfkill_set_block+0x50/0x2e0
 rfkill_set_block+0x1d2/0x440
 rfkill_sync_work+0x114/0x200
 process_scheduled_works+0xae1/0x17b0
 worker_thread+0x8a0/0xda0
 kthread+0x711/0x8a0
 ret_from_fork+0x3fc/0x770
 ret_from_fork_asm+0x1a/0x30
 </TASK>
INFO: task syz.1.1416:11406 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.1416      state:D stack:25096 pid:11406 tgid:11406 ppid:5847   task_flags:0x400040 flags:0x00004004
Call Trace:
 <TASK>
 __schedule+0x1798/0x4cc0
 schedule+0x165/0x360
 schedule_timeout+0x9a/0x270
 wait_for_completion+0x2bf/0x5d0
 __flush_work+0x9b9/0xbc0
 __cancel_work_sync+0xbe/0x110
 rfkill_unregister+0x92/0x220
 nfc_unregister_device+0x96/0x2a0
 virtual_ncidev_close+0x56/0x90
 __fput+0x44c/0xa70
 task_work_run+0x1d4/0x260
 exit_to_user_mode_loop+0xec/0x110
 do_syscall_64+0x2bd/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fda5218ebe9
RSP: 002b:00007ffdcb336448 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 0000000000028fb0 RCX: 00007fda5218ebe9
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007fda523c7da0 R08: 0000000000000001 R09: 0000001ecb33673f
R10: 0000001b31120000 R11: 0000000000000246 R12: 00007fda523c5fac
R13: 00007fda523c5fa0 R14: ffffffffffffffff R15: 00007ffdcb336560
 </TASK>

Showing all locks held in the system:
1 lock held by ksoftirqd/0/15:
 #0: ffff88804b039f98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140
1 lock held by khungtaskd/34:
 #0: ffffffff8e139ee0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
3 locks held by kworker/1:2/793:
 #0: ffff88801a480d48 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0
 #1: ffffc90004f67bc0 ((work_completion)(&rfkill_global_led_trigger_work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0
 #2: ffffffff8f812768 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_global_led_trigger_worker+0x27/0xd0
2 locks held by getty/5675:
 #0: ffff888023a530a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc900029062f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400
4 locks held by kworker/1:3/5880:
 #0: ffff88801a480d48 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0
 #1: ffffc9000437fbc0 ((work_completion)(&rfkill->sync_work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0
 #2: ffffffff8f812768 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_sync_work+0x2e/0x200
 #3: ffff88811d7aa100 (&dev->mutex){....}-{4:4}, at: nfc_rfkill_set_block+0x50/0x2e0
1 lock held by syz.1.1416/11406:
 #0: ffff88811d7aa100 (&dev->mutex){....}-{4:4}, at: nfc_unregister_device+0x63/0x2a0
3 locks held by syz.0.1463/11573:
 #0: ffffffff8f59e0f0 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40
 #1: ffffffff8f59df08 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x10d/0x790
 #2: ffffffff8f812768 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_register+0x37/0x8e0
2 locks held by syz.2.1466/11586:
 #0: ffffffff8f59e0f0 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40
 #1: ffffffff8f59df08 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x10d/0x790
2 locks held by syz-executor/11590:
 #0: ffff888110824918 (&data->open_mutex){+.+.}-{4:4}, at: vhci_create_device+0x34/0x650
 #1: ffffffff8f812768 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_register+0x37/0x8e0
2 locks held by syz-executor/11592:
 #0: ffff888110827118 (&data->open_mutex){+.+.}-{4:4}, at: vhci_create_device+0x34/0x650
 #1: ffffffff8f812768 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_register+0x37/0x8e0
2 locks held by syz-executor/11594:
 #0: ffff888109086918 (&data->open_mutex){+.+.}-{4:4}, at: vhci_create_device+0x34/0x650
 #1: ffffffff8f812768 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_register+0x37/0x8e0
2 locks held by syz-executor/11596:
 #0: ffff8880465de118 (&data->open_mutex){+.+.}-{4:4}, at: vhci_create_device+0x34/0x650
 #1: ffffffff8f812768 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_register+0x37/0x8e0
2 locks held by syz-executor/11598:
 #0: ffff8880465db918 (&data->open_mutex){+.+.}-{4:4}, at: vhci_create_device+0x34/0x650
 #1: ffffffff8f812768 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_register+0x37/0x8e0
2 locks held by syz-executor/11600:
 #0: ffff8880465d9918 (&data->open_mutex){+.+.}-{4:4}, at: vhci_create_device+0x34/0x650
 #1: ffffffff8f812768 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_register+0x37/0x8e0
2 locks held by syz-executor/11602:
 #0: ffff88803ae58918 (&data->open_mutex){+.+.}-{4:4}, at: vhci_create_device+0x34/0x650
 #1: ffffffff8f812768 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_register+0x37/0x8e0
2 locks held by syz-executor/11604:
 #0: ffff88811a852118 (&data->open_mutex){+.+.}-{4:4}, at: vhci_create_device+0x34/0x650
 #1: ffffffff8f812768 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_register+0x37/0x8e0
2 locks held by syz-executor/11606:
 #0: ffff888049d68918 (&data->open_mutex){+.+.}-{4:4}, at: vhci_create_device+0x34/0x650
 #1: ffffffff8f812768 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_register+0x37/0x8e0

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

NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 34 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250
 nmi_cpu_backtrace+0x39e/0x3d0
 nmi_trigger_cpumask_backtrace+0x17a/0x300
 watchdog+0xf93/0xfe0
 kthread+0x711/0x8a0
 ret_from_fork+0x3fc/0x770
 ret_from_fork_asm+0x1a/0x30
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 27 Comm: kworker/u10:0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Workqueue:  0x0 (events_unbound)
RIP: 0010:update_dl_rq_load_avg+0x18c/0x940
Code: 03 48 bd 00 00 00 00 00 fc ff df 0f b6 04 28 84 c0 48 89 14 24 0f 85 7f 05 00 00 41 8b 45 00 48 f7 e6 49 89 d5 49 0f a4 c5 20 <41> 80 3c 2f 00 74 08 4c 89 e7 e8 95 f4 8b 00 4c 89 ab 88 0c 00 00
RSP: 0018:ffffc9000060f650 EFLAGS: 00000046
RAX: 0000000000000000 RBX: ffff88804b039f80 RCX: cbf42f72e5009c00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000046e4021865
RBP: dffffc0000000000 R08: ffffffff8fa38e37 R09: 1ffffffff1f471c6
R10: dffffc0000000000 R11: fffffbfff1f471c7 R12: ffff88804b03ac08
R13: 0000000000000000 R14: 0000000000001486 R15: 1ffff11009607581
FS:  0000000000000000(0000) GS:ffff8880b8618000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055e4ea904e10 CR3: 000000000df36000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 update_other_load_avgs+0x1ec/0x3e0
 sched_balance_update_blocked_averages+0x212/0x1580
 sched_balance_newidle+0x46d/0x1030
 pick_next_task_fair+0x40/0xba0
 __pick_next_task+0xe4/0x450
 __schedule+0x7a4/0x4cc0
 schedule+0x165/0x360
 worker_thread+0xa82/0xda0
 kthread+0x711/0x8a0
 ret_from_fork+0x3fc/0x770
 ret_from_fork_asm+0x1a/0x30
 </TASK>
