INFO: task kworker/1:0:24 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:0     state:D stack:24072 pid:24    tgid:24    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 kworker/1:5:5906 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:5     state:D stack:23408 pid:5906  tgid:5906  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 syz.1.4616:21324 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.4616      state:D stack:26120 pid:21324 tgid:21323 ppid:5844   task_flags:0x400140 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
 fput_close_sync+0x119/0x200
 __x64_sys_close+0x7f/0x110
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff0e5b8ebe9
RSP: 002b:00007ff0e6940038 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
RAX: ffffffffffffffda RBX: 00007ff0e5dc5fa0 RCX: 00007ff0e5b8ebe9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 00007ff0e5c11e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ff0e5dc6038 R14: 00007ff0e5dc5fa0 R15: 00007ffef6bfa348
 </TASK>
INFO: task syz.0.4735:21701 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.4735      state:D stack:23784 pid:21701 tgid:21700 ppid:5848   task_flags:0x400140 flags:0x00004004
Call Trace:
 <TASK>
 __schedule+0x1798/0x4cc0
 schedule+0x165/0x360
 schedule_preempt_disabled+0x13/0x30
 __mutex_lock+0x7e6/0x1350
 rfkill_register+0x37/0x8e0
 wiphy_register+0x214c/0x28d0
 ieee80211_register_hw+0x3425/0x4080
 mac80211_hwsim_new_radio+0x2f0e/0x5340
 hwsim_new_radio_nl+0xea4/0x1b10
 genl_family_rcv_msg_doit+0x215/0x300
 genl_rcv_msg+0x60e/0x790
 netlink_rcv_skb+0x208/0x470
 genl_rcv+0x28/0x40
 netlink_unicast+0x82f/0x9e0
 netlink_sendmsg+0x805/0xb30
 __sock_sendmsg+0x21c/0x270
 ____sys_sendmsg+0x505/0x830
 ___sys_sendmsg+0x21f/0x2a0
 __x64_sys_sendmsg+0x19b/0x260
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb22df8ebe9
RSP: 002b:00007fb22ed3d038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fb22e1c5fa0 RCX: 00007fb22df8ebe9
RDX: 0000000020000000 RSI: 0000200000000140 RDI: 0000000000000003
RBP: 00007fb22e011e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fb22e1c6038 R14: 00007fb22e1c5fa0 R15: 00007ffcdcf68f08
 </TASK>
INFO: task syz.0.4735:21702 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.4735      state:D stack:28616 pid:21702 tgid:21700 ppid:5848   task_flags:0x400040 flags:0x00004004
Call Trace:
 <TASK>
 __schedule+0x1798/0x4cc0
 schedule+0x165/0x360
 schedule_preempt_disabled+0x13/0x30
 __mutex_lock+0x7e6/0x1350
 genl_rcv_msg+0x10d/0x790
 netlink_rcv_skb+0x208/0x470
 genl_rcv+0x28/0x40
 netlink_unicast+0x82f/0x9e0
 netlink_sendmsg+0x805/0xb30
 __sock_sendmsg+0x21c/0x270
 __sys_sendto+0x3bd/0x520
 __x64_sys_sendto+0xde/0x100
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb22df90a7c
RSP: 002b:00007fb22c1f4ec0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007fb22c1f4fc0 RCX: 00007fb22df90a7c
RDX: 0000000000000020 RSI: 00007fb22c1f5010 RDI: 0000000000000004
RBP: 0000000000000000 R08: 00007fb22c1f4f14 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000004
R13: 00007fb22c1f4f68 R14: 00007fb22c1f5010 R15: 0000000000000000
 </TASK>
INFO: task syz.2.4737:21709 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.4737      state:D stack:28616 pid:21709 tgid:21708 ppid:5840   task_flags:0x400040 flags:0x00004004
Call Trace:
 <TASK>
 __schedule+0x1798/0x4cc0
 schedule+0x165/0x360
 schedule_preempt_disabled+0x13/0x30
 __mutex_lock+0x7e6/0x1350
 genl_rcv_msg+0x10d/0x790
 netlink_rcv_skb+0x208/0x470
 genl_rcv+0x28/0x40
 netlink_unicast+0x82f/0x9e0
 netlink_sendmsg+0x805/0xb30
 __sock_sendmsg+0x21c/0x270
 __sys_sendto+0x3bd/0x520
 __x64_sys_sendto+0xde/0x100
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6a76990a7c
RSP: 002b:00007f6a777d2ec0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007f6a777d2fc0 RCX: 00007f6a76990a7c
RDX: 0000000000000020 RSI: 00007f6a777d3010 RDI: 0000000000000003
RBP: 0000000000000000 R08: 00007f6a777d2f14 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003
R13: 00007f6a777d2f68 R14: 00007f6a777d3010 R15: 0000000000000000
 </TASK>
INFO: task syz.2.4737:21710 blocked for more than 144 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.4737      state:D stack:28232 pid:21710 tgid:21708 ppid:5840   task_flags:0x400040 flags:0x00004004
Call Trace:
 <TASK>
 __schedule+0x1798/0x4cc0
 schedule+0x165/0x360
 schedule_preempt_disabled+0x13/0x30
 __mutex_lock+0x7e6/0x1350
 genl_rcv_msg+0x10d/0x790
 netlink_rcv_skb+0x208/0x470
 genl_rcv+0x28/0x40
 netlink_unicast+0x82f/0x9e0
 netlink_sendmsg+0x805/0xb30
 __sock_sendmsg+0x21c/0x270
 __sys_sendto+0x3bd/0x520
 __x64_sys_sendto+0xde/0x100
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6a76990a7c
RSP: 002b:00007f6a777b1ec0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007f6a777b1fc0 RCX: 00007f6a76990a7c
RDX: 0000000000000020 RSI: 00007f6a777b2010 RDI: 0000000000000006
RBP: 0000000000000000 R08: 00007f6a777b1f14 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000006
R13: 00007f6a777b1f68 R14: 00007f6a777b2010 R15: 0000000000000000
 </TASK>

Showing all locks held in the system:
4 locks held by kworker/1:0/24:
 #0: ffff88801a480d48 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0
 #1: ffffc900001c7bc0 ((work_completion)(&rfkill->sync_work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0
 #2: ffffffff8f812c88 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_sync_work+0x2e/0x200
 #3: ffff888119e93100 (&dev->mutex){....}-{4:4}, at: nfc_rfkill_set_block+0x50/0x2e0
1 lock held by khungtaskd/34:
 #0: ffffffff8e139ee0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
2 locks held by getty/5670:
 #0: ffff88810f1950a0 (&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
3 locks held by kworker/1:5/5906:
 #0: ffff88801a480d48 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0
 #1: ffffc9000461fbc0 ((work_completion)(&rfkill_global_led_trigger_work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0
 #2: ffffffff8f812c88 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_global_led_trigger_worker+0x27/0xd0
1 lock held by syz.1.4616/21324:
 #0: ffff888119e93100 (&dev->mutex){....}-{4:4}, at: nfc_unregister_device+0x63/0x2a0
3 locks held by syz.0.4735/21701:
 #0: ffffffff8f59e530 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40
 #1: ffffffff8f59e348 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x10d/0x790
 #2: ffffffff8f812c88 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_register+0x37/0x8e0
2 locks held by syz.0.4735/21702:
 #0: ffffffff8f59e530 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40
 #1: ffffffff8f59e348 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x10d/0x790
2 locks held by syz.2.4737/21709:
 #0: ffffffff8f59e530 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40
 #1: ffffffff8f59e348 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x10d/0x790
2 locks held by syz.2.4737/21710:
 #0: ffffffff8f59e530 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40
 #1: ffffffff8f59e348 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x10d/0x790
2 locks held by syz-executor/21714:
 #0: ffff888109d68918 (&data->open_mutex){+.+.}-{4:4}, at: vhci_create_device+0x34/0x6e0
 #1: ffffffff8f812c88 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_register+0x37/0x8e0
2 locks held by syz-executor/21717:
 #0: ffff88803c786918 (&data->open_mutex){+.+.}-{4:4}, at: vhci_create_device+0x34/0x6e0
 #1: ffffffff8f812c88 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_register+0x37/0x8e0
2 locks held by syz-executor/21718:
 #0: ffff8880464e0118 (&data->open_mutex){+.+.}-{4:4}, at: vhci_create_device+0x34/0x6e0
 #1: ffffffff8f812c88 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_register+0x37/0x8e0
2 locks held by syz-executor/21723:
 #0: ffff888124329918 (&data->open_mutex){+.+.}-{4:4}, at: vhci_create_device+0x34/0x6e0
 #1: ffffffff8f812c88 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_register+0x37/0x8e0
2 locks held by syz-executor/21726:
 #0: ffff88811e839118 (&data->open_mutex){+.+.}-{4:4}, at: vhci_create_device+0x34/0x6e0
 #1: ffffffff8f812c88 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_register+0x37/0x8e0
2 locks held by syz-executor/21727:
 #0: ffff88811e83b118 (&data->open_mutex){+.+.}-{4:4}, at: vhci_create_device+0x34/0x6e0
 #1: ffffffff8f812c88 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_register+0x37/0x8e0
2 locks held by syz-executor/21734:
 #0: ffff88801f2ed918 (&data->open_mutex){+.+.}-{4:4}, at: vhci_create_device+0x34/0x6e0
 #1: ffffffff8f812c88 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_register+0x37/0x8e0
2 locks held by syz-executor/21737:
 #0: ffff88812244d118 (&data->open_mutex){+.+.}-{4:4}, at: vhci_create_device+0x34/0x6e0
 #1: ffffffff8f812c88 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_register+0x37/0x8e0
2 locks held by syz-executor/21738:
 #0: ffff88812244f918 (&data->open_mutex){+.+.}-{4:4}, at: vhci_create_device+0x34/0x6e0
 #1: ffffffff8f812c88 (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: 13 Comm: kworker/u8:1 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: bat_events batadv_nc_worker
RIP: 0010:__sanitizer_cov_trace_pc+0x5d/0x70
Code: 18 16 00 00 83 fa 02 75 21 48 8b 91 20 16 00 00 48 8b 32 48 8d 7e 01 8b 89 1c 16 00 00 48 39 cf 73 08 48 89 3a 48 89 44 f2 08 <c3> cc cc cc cc cc 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90
RSP: 0018:ffffc90000107a18 EFLAGS: 00000293
RAX: ffffffff8b47d0f5 RBX: 0000000000000001 RCX: ffff88801c2d8000
RDX: 0000000000000000 RSI: ffffffff8be337e0 RDI: ffffffff8be337a0
RBP: ffff88803a37c410 R08: 0000000000000000 R09: ffffffff8b47d0b2
R10: dffffc0000000000 R11: ffffffff8b47cfe0 R12: dffffc0000000000
R13: ffffffff8b47d0b2 R14: ffff8880206f4d80 R15: 0000000000000082
FS:  0000000000000000(0000) GS:ffff8880b8614000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffdfc8ceff8 CR3: 0000000020764000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 batadv_nc_worker+0x115/0x610
 process_scheduled_works+0xae1/0x17b0
 worker_thread+0x8a0/0xda0
 kthread+0x711/0x8a0
 ret_from_fork+0x3fc/0x770
 ret_from_fork_asm+0x1a/0x30
 </TASK>
