INFO: task kworker/0:1:9 blocked for more than 143 seconds.
      Not tainted 6.8.0-rc3-syzkaller-g54be6c6c5ae8 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:1     state:D stack:23288 pid:9     tgid:9     ppid:2      flags:0x00004000
Workqueue: events nfc_urelease_event_work
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5400 [inline]
 __schedule+0x177f/0x49a0 kernel/sched/core.c:6727
 __schedule_loop kernel/sched/core.c:6802 [inline]
 schedule+0x149/0x260 kernel/sched/core.c:6817
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6874
 __mutex_lock_common kernel/locking/mutex.c:684 [inline]
 __mutex_lock+0x6a3/0xd70 kernel/locking/mutex.c:752
 nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843
 process_one_work kernel/workqueue.c:2633 [inline]
 process_scheduled_works+0x913/0x1420 kernel/workqueue.c:2706
 worker_thread+0xa5f/0x1000 kernel/workqueue.c:2787
 kthread+0x2ef/0x390 kernel/kthread.c:388
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:242
 </TASK>
INFO: task kworker/u4:8:2427 blocked for more than 143 seconds.
      Not tainted 6.8.0-rc3-syzkaller-g54be6c6c5ae8 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:8    state:D stack:20408 pid:2427  tgid:2427  ppid:2      flags:0x00004000
Workqueue: nfc2_nci_rx_wq nci_rx_work
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5400 [inline]
 __schedule+0x177f/0x49a0 kernel/sched/core.c:6727
 __schedule_loop kernel/sched/core.c:6802 [inline]
 schedule+0x149/0x260 kernel/sched/core.c:6817
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6874
 __mutex_lock_common kernel/locking/mutex.c:684 [inline]
 __mutex_lock+0x6a3/0xd70 kernel/locking/mutex.c:752
 device_lock include/linux/device.h:990 [inline]
 nfc_targets_found+0x26f/0x590 net/nfc/core.c:778
 nci_ntf_packet+0x4431/0x4f40
 nci_rx_work+0x14c/0x2b0 net/nfc/nci/core.c:1526
 process_one_work kernel/workqueue.c:2633 [inline]
 process_scheduled_works+0x913/0x1420 kernel/workqueue.c:2706
 worker_thread+0xa5f/0x1000 kernel/workqueue.c:2787
 kthread+0x2ef/0x390 kernel/kthread.c:388
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:242
 </TASK>
INFO: task kworker/0:6:5519 blocked for more than 143 seconds.
      Not tainted 6.8.0-rc3-syzkaller-g54be6c6c5ae8 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:6     state:D stack:24208 pid:5519  tgid:5519  ppid:2      flags:0x00004000
Workqueue: events nfc_urelease_event_work
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5400 [inline]
 __schedule+0x177f/0x49a0 kernel/sched/core.c:6727
 __schedule_loop kernel/sched/core.c:6802 [inline]
 schedule+0x149/0x260 kernel/sched/core.c:6817
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6874
 __mutex_lock_common kernel/locking/mutex.c:684 [inline]
 __mutex_lock+0x6a3/0xd70 kernel/locking/mutex.c:752
 nfc_urelease_event_work+0x111/0x300 net/nfc/netlink.c:1849
 process_one_work kernel/workqueue.c:2633 [inline]
 process_scheduled_works+0x913/0x1420 kernel/workqueue.c:2706
 worker_thread+0xa5f/0x1000 kernel/workqueue.c:2787
 kthread+0x2ef/0x390 kernel/kthread.c:388
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:242
 </TASK>
INFO: task syz-executor.5:5983 blocked for more than 144 seconds.
      Not tainted 6.8.0-rc3-syzkaller-g54be6c6c5ae8 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5  state:D stack:26064 pid:5983  tgid:5980  ppid:5445   flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5400 [inline]
 __schedule+0x177f/0x49a0 kernel/sched/core.c:6727
 __schedule_loop kernel/sched/core.c:6802 [inline]
 schedule+0x149/0x260 kernel/sched/core.c:6817
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6874
 __mutex_lock_common kernel/locking/mutex.c:684 [inline]
 __mutex_lock+0x6a3/0xd70 kernel/locking/mutex.c:752
 nfc_unregister_device+0x175/0x2a0 net/nfc/core.c:1181
 virtual_ncidev_close+0x59/0x90 drivers/nfc/virtual_ncidev.c:168
 __fput+0x429/0x8a0 fs/file_table.c:376
 task_work_run+0x24e/0x310 kernel/task_work.c:180
 get_signal+0x1672/0x1850 kernel/signal.c:2669
 arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:310
 exit_to_user_mode_loop kernel/entry/common.c:105 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:201 [inline]
 syscall_exit_to_user_mode+0xc8/0x370 kernel/entry/common.c:212
 do_syscall_64+0x108/0x240 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f29a607cd29
RSP: 002b:00007f29a6d680c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: fffffffffffffff2 RBX: 00007f29a61abf80 RCX: 00007f29a607cd29
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00007f29a60c947a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f29a61abf80 R15: 00007fff8a633bd8
 </TASK>
INFO: task syz-executor.0:5993 blocked for more than 144 seconds.
      Not tainted 6.8.0-rc3-syzkaller-g54be6c6c5ae8 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0  state:D stack:25008 pid:5993  tgid:5982  ppid:5438   flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5400 [inline]
 __schedule+0x177f/0x49a0 kernel/sched/core.c:6727
 __schedule_loop kernel/sched/core.c:6802 [inline]
 schedule+0x149/0x260 kernel/sched/core.c:6817
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6874
 __mutex_lock_common kernel/locking/mutex.c:684 [inline]
 __mutex_lock+0x6a3/0xd70 kernel/locking/mutex.c:752
 nfc_unregister_device+0x175/0x2a0 net/nfc/core.c:1181
 virtual_ncidev_close+0x59/0x90 drivers/nfc/virtual_ncidev.c:168
 __fput+0x429/0x8a0 fs/file_table.c:376
 task_work_run+0x24e/0x310 kernel/task_work.c:180
 get_signal+0x1672/0x1850 kernel/signal.c:2669
 arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:310
 exit_to_user_mode_loop kernel/entry/common.c:105 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:201 [inline]
 syscall_exit_to_user_mode+0xc8/0x370 kernel/entry/common.c:212
 do_syscall_64+0x108/0x240 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7fdd32a7cd29
RSP: 002b:00007fdd338920c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: fffffffffffffff2 RBX: 00007fdd32babf80 RCX: 00007fdd32a7cd29
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00007fdd32ac947a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fdd32babf80 R15: 00007ffdcb0f61a8
 </TASK>
INFO: task syz-executor.4:6014 blocked for more than 144 seconds.
      Not tainted 6.8.0-rc3-syzkaller-g54be6c6c5ae8 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4  state:D stack:25112 pid:6014  tgid:6014  ppid:5427   flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5400 [inline]
 __schedule+0x177f/0x49a0 kernel/sched/core.c:6727
 __schedule_loop kernel/sched/core.c:6802 [inline]
 schedule+0x149/0x260 kernel/sched/core.c:6817
 schedule_timeout+0xb0/0x310 kernel/time/timer.c:2159
 do_wait_for_common kernel/sched/completion.c:95 [inline]
 __wait_for_common kernel/sched/completion.c:116 [inline]
 wait_for_common kernel/sched/completion.c:127 [inline]
 wait_for_completion+0x354/0x620 kernel/sched/completion.c:148
 __flush_workqueue+0x730/0x1630 kernel/workqueue.c:3198
 nci_close_device+0x193/0x610 net/nfc/nci/core.c:579
 nci_unregister_device+0x40/0x240 net/nfc/nci/core.c:1301
 virtual_ncidev_close+0x59/0x90 drivers/nfc/virtual_ncidev.c:168
 __fput+0x429/0x8a0 fs/file_table.c:376
 __do_sys_close fs/open.c:1554 [inline]
 __se_sys_close fs/open.c:1539 [inline]
 __x64_sys_close+0x7e/0x110 fs/open.c:1539
 do_syscall_64+0xf9/0x240
 entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f3cf7a7bc1a
RSP: 002b:00007fff83fb58d0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f3cf7a7bc1a
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00007f3cf7bad980 R08: 0000001b2ea60000 R09: 00007fff83fd10b0
R10: 00007fff83fd1080 R11: 0000000000000293 R12: 000000000001ddbb
R13: ffffffffffffffff R14: 00007f3cf7600000 R15: 000000000001da7a
 </TASK>
INFO: task syz-executor.4:6029 blocked for more than 144 seconds.
      Not tainted 6.8.0-rc3-syzkaller-g54be6c6c5ae8 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4  state:D stack:25392 pid:6029  tgid:6014  ppid:5427   flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5400 [inline]
 __schedule+0x177f/0x49a0 kernel/sched/core.c:6727
 __schedule_loop kernel/sched/core.c:6802 [inline]
 schedule+0x149/0x260 kernel/sched/core.c:6817
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6874
 __mutex_lock_common kernel/locking/mutex.c:684 [inline]
 __mutex_lock+0x6a3/0xd70 kernel/locking/mutex.c:752
 nci_request net/nfc/nci/core.c:149 [inline]
 nci_start_poll+0xa30/0xf30 net/nfc/nci/core.c:854
 nfc_start_poll+0x190/0x300 net/nfc/core.c:225
 nfc_genl_start_poll+0x1eb/0x350 net/nfc/netlink.c:828
 genl_family_rcv_msg_doit net/netlink/genetlink.c:1113 [inline]
 genl_family_rcv_msg net/netlink/genetlink.c:1193 [inline]
 genl_rcv_msg+0xad6/0xe50 net/netlink/genetlink.c:1208
 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2543
 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1217
 netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline]
 netlink_unicast+0x7ea/0x980 net/netlink/af_netlink.c:1367
 netlink_sendmsg+0xa3b/0xd70 net/netlink/af_netlink.c:1908
 sock_sendmsg_nosec net/socket.c:730 [inline]
 __sock_sendmsg+0x221/0x270 net/socket.c:745
 ____sys_sendmsg+0x525/0x7d0 net/socket.c:2584
 ___sys_sendmsg net/socket.c:2638 [inline]
 __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2667
 do_syscall_64+0xf9/0x240
 entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f3cf7a7cd29
RSP: 002b:00007f3cf88380c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f3cf7bac050 RCX: 00007f3cf7a7cd29
RDX: 0000000000000000 RSI: 0000000020000440 RDI: 0000000000000005
RBP: 00007f3cf7ac947a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f3cf7bac050 R15: 00007fff83fb5808
 </TASK>
INFO: task syz-executor.1:6021 blocked for more than 145 seconds.
      Not tainted 6.8.0-rc3-syzkaller-g54be6c6c5ae8 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1  state:D stack:24016 pid:6021  tgid:6019  ppid:5430   flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5400 [inline]
 __schedule+0x177f/0x49a0 kernel/sched/core.c:6727
 __schedule_loop kernel/sched/core.c:6802 [inline]
 schedule+0x149/0x260 kernel/sched/core.c:6817
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6874
 __mutex_lock_common kernel/locking/mutex.c:684 [inline]
 __mutex_lock+0x6a3/0xd70 kernel/locking/mutex.c:752
 genl_lock net/netlink/genetlink.c:33 [inline]
 genl_op_lock net/netlink/genetlink.c:58 [inline]
 genl_rcv_msg+0x121/0xe50 net/netlink/genetlink.c:1207
 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2543
 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1217
 netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline]
 netlink_unicast+0x7ea/0x980 net/netlink/af_netlink.c:1367
 netlink_sendmsg+0xa3b/0xd70 net/netlink/af_netlink.c:1908
 sock_sendmsg_nosec net/socket.c:730 [inline]
 __sock_sendmsg+0x221/0x270 net/socket.c:745
 ____sys_sendmsg+0x525/0x7d0 net/socket.c:2584
 ___sys_sendmsg net/socket.c:2638 [inline]
 __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2667
 do_syscall_64+0xf9/0x240
 entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f875aa7cd29
RSP: 002b:00007f875b8730c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f875ababf80 RCX: 00007f875aa7cd29
RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000005
RBP: 00007f875aac947a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f875ababf80 R15: 00007ffd59d738f8
 </TASK>
INFO: task syz-executor.1:6026 blocked for more than 145 seconds.
      Not tainted 6.8.0-rc3-syzkaller-g54be6c6c5ae8 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1  state:D stack:26832 pid:6026  tgid:6019  ppid:5430   flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5400 [inline]
 __schedule+0x177f/0x49a0 kernel/sched/core.c:6727
 __schedule_loop kernel/sched/core.c:6802 [inline]
 schedule+0x149/0x260 kernel/sched/core.c:6817
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6874
 __mutex_lock_common kernel/locking/mutex.c:684 [inline]
 __mutex_lock+0x6a3/0xd70 kernel/locking/mutex.c:752
 nfc_unregister_device+0x175/0x2a0 net/nfc/core.c:1181
 virtual_ncidev_close+0x59/0x90 drivers/nfc/virtual_ncidev.c:168
 __fput+0x429/0x8a0 fs/file_table.c:376
 task_work_run+0x24e/0x310 kernel/task_work.c:180
 get_signal+0x1672/0x1850 kernel/signal.c:2669
 arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:310
 exit_to_user_mode_loop kernel/entry/common.c:105 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:201 [inline]
 syscall_exit_to_user_mode+0xc8/0x370 kernel/entry/common.c:212
 do_syscall_64+0x108/0x240 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f875aa7cd29
RSP: 002b:00007f875b8520c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: fffffffffffffff2 RBX: 00007f875abac050 RCX: 00007f875aa7cd29
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00007f875aac947a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f875abac050 R15: 00007ffd59d738f8
 </TASK>
INFO: task syz-executor.1:6040 blocked for more than 146 seconds.
      Not tainted 6.8.0-rc3-syzkaller-g54be6c6c5ae8 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1  state:D stack:27120 pid:6040  tgid:6019  ppid:5430   flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5400 [inline]
 __schedule+0x177f/0x49a0 kernel/sched/core.c:6727
 __schedule_loop kernel/sched/core.c:6802 [inline]
 schedule+0x149/0x260 kernel/sched/core.c:6817
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6874
 __mutex_lock_common kernel/locking/mutex.c:684 [inline]
 __mutex_lock+0x6a3/0xd70 kernel/locking/mutex.c:752
 genl_lock net/netlink/genetlink.c:33 [inline]
 genl_op_lock net/netlink/genetlink.c:58 [inline]
 genl_rcv_msg+0x121/0xe50 net/netlink/genetlink.c:1207
 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2543
 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1217
 netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline]
 netlink_unicast+0x7ea/0x980 net/netlink/af_netlink.c:1367
 netlink_sendmsg+0xa3b/0xd70 net/netlink/af_netlink.c:1908
 sock_sendmsg_nosec net/socket.c:730 [inline]
 __sock_sendmsg+0x221/0x270 net/socket.c:745
 ____sys_sendmsg+0x525/0x7d0 net/socket.c:2584
 ___sys_sendmsg net/socket.c:2638 [inline]
 __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2667
 do_syscall_64+0xf9/0x240
 entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f875aa7cd29
RSP: 002b:00007f875b8310c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f875abac120 RCX: 00007f875aa7cd29
RDX: 0000000000000000 RSI: 0000000020000440 RDI: 0000000000000005
RBP: 00007f875aac947a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f875abac120 R15: 00007ffd59d738f8
 </TASK>
Future hung task reports are suppressed, see sysctl kernel.hung_task_warnings

Showing all locks held in the system:
3 locks held by kworker/0:1/9:
 #0: ffff888014c8cd38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2608 [inline]
 #0: ffff888014c8cd38 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2706
 #1: ffffc900000e7d20 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2608 [inline]
 #1: ffffc900000e7d20 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2706
 #2: ffffffff8f67d6c8 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843
1 lock held by khungtaskd/29:
 #0: ffffffff8e130ae0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline]
 #0: ffffffff8e130ae0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline]
 #0: ffffffff8e130ae0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
3 locks held by kworker/u4:8/2427:
 #0: ffff88807be82538 ((wq_completion)nfc2_nci_rx_wq#3){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2608 [inline]
 #0: ffff88807be82538 ((wq_completion)nfc2_nci_rx_wq#3){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2706
 #1: ffffc900091ffd20 ((work_completion)(&ndev->rx_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2608 [inline]
 #1: ffffc900091ffd20 ((work_completion)(&ndev->rx_work)){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2706
 #2: ffff8880255d1100 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline]
 #2: ffff8880255d1100 (&dev->mutex){....}-{3:3}, at: nfc_targets_found+0x26f/0x590 net/nfc/core.c:778
2 locks held by getty/4819:
 #0: ffff8880307900a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
 #1: ffffc90002efe2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b4/0x1e10 drivers/tty/n_tty.c:2201
4 locks held by kworker/0:6/5519:
 #0: ffff888014c8cd38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2608 [inline]
 #0: ffff888014c8cd38 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2706
 #1: ffffc9000969fd20 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2608 [inline]
 #1: ffffc9000969fd20 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2706
 #2: ffffffff8f67d6c8 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x300 net/nfc/netlink.c:1843
 #3: ffff8880255d1508 (&genl_data->genl_data_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0x111/0x300 net/nfc/netlink.c:1849
1 lock held by syz-executor.5/5983:
 #0: ffffffff8f67d6c8 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_unregister_device+0x175/0x2a0 net/nfc/core.c:1181
1 lock held by syz-executor.0/5993:
 #0: ffffffff8f67d6c8 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_unregister_device+0x175/0x2a0 net/nfc/core.c:1181
1 lock held by syz-executor.4/6014:
 #0: ffff8880255d7350 (&ndev->req_lock){+.+.}-{3:3}, at: nci_close_device+0x10a/0x610 net/nfc/nci/core.c:561
5 locks held by syz-executor.4/6029:
 #0: ffffffff8f3c66b0 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1216
 #1: ffffffff8f3c6568 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline]
 #1: ffffffff8f3c6568 (genl_mutex){+.+.}-{3:3}, at: genl_op_lock net/netlink/genetlink.c:58 [inline]
 #1: ffffffff8f3c6568 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x121/0xe50 net/netlink/genetlink.c:1207
 #2: ffff8880255d1508 (&genl_data->genl_data_mutex){+.+.}-{3:3}, at: nfc_genl_start_poll+0x1de/0x350 net/nfc/netlink.c:826
 #3: ffff8880255d1100 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline]
 #3: ffff8880255d1100 (&dev->mutex){....}-{3:3}, at: nfc_start_poll+0x5a/0x300 net/nfc/core.c:208
 #4: ffff8880255d7350 (&ndev->req_lock){+.+.}-{3:3}, at: nci_request net/nfc/nci/core.c:149 [inline]
 #4: ffff8880255d7350 (&ndev->req_lock){+.+.}-{3:3}, at: nci_start_poll+0xa30/0xf30 net/nfc/nci/core.c:854
2 locks held by syz-executor.1/6021:
 #0: ffffffff8f3c66b0 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1216
 #1: ffffffff8f3c6568 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline]
 #1: ffffffff8f3c6568 (genl_mutex){+.+.}-{3:3}, at: genl_op_lock net/netlink/genetlink.c:58 [inline]
 #1: ffffffff8f3c6568 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x121/0xe50 net/netlink/genetlink.c:1207
1 lock held by syz-executor.1/6026:
 #0: ffffffff8f67d6c8 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_unregister_device+0x175/0x2a0 net/nfc/core.c:1181
2 locks held by syz-executor.1/6040:
 #0: ffffffff8f3c66b0 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1216
 #1: ffffffff8f3c6568 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline]
 #1: ffffffff8f3c6568 (genl_mutex){+.+.}-{3:3}, at: genl_op_lock net/netlink/genetlink.c:58 [inline]
 #1: ffffffff8f3c6568 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x121/0xe50 net/netlink/genetlink.c:1207
2 locks held by syz-executor.2/6034:
 #0: ffffffff8f3c66b0 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1216
 #1: ffffffff8f3c6568 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline]
 #1: ffffffff8f3c6568 (genl_mutex){+.+.}-{3:3}, at: genl_op_lock net/netlink/genetlink.c:58 [inline]
 #1: ffffffff8f3c6568 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x121/0xe50 net/netlink/genetlink.c:1207
1 lock held by syz-executor.2/6043:
 #0: ffffffff8f67d6c8 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_unregister_device+0x175/0x2a0 net/nfc/core.c:1181
2 locks held by syz-executor.3/6031:
 #0: ffffffff8f3c66b0 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1216
 #1: ffffffff8f3c6568 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline]
 #1: ffffffff8f3c6568 (genl_mutex){+.+.}-{3:3}, at: genl_op_lock net/netlink/genetlink.c:58 [inline]
 #1: ffffffff8f3c6568 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x121/0xe50 net/netlink/genetlink.c:1207
1 lock held by syz-executor.3/6042:
 #0: ffffffff8f67d6c8 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_unregister_device+0x175/0x2a0 net/nfc/core.c:1181
2 locks held by syz-executor.5/6142:
 #0: ffffffff8f3c66b0 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1216
 #1: ffffffff8f3c6568 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline]
 #1: ffffffff8f3c6568 (genl_mutex){+.+.}-{3:3}, at: genl_op_lock net/netlink/genetlink.c:58 [inline]
 #1: ffffffff8f3c6568 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x121/0xe50 net/netlink/genetlink.c:1207
2 locks held by syz-executor.0/6145:
 #0: ffffffff8f3c66b0 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1216
 #1: ffffffff8f3c6568 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline]
 #1: ffffffff8f3c6568 (genl_mutex){+.+.}-{3:3}, at: genl_op_lock net/netlink/genetlink.c:58 [inline]
 #1: ffffffff8f3c6568 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x121/0xe50 net/netlink/genetlink.c:1207
2 locks held by syz-executor.4/6152:
 #0: ffffffff8f3c66b0 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1216
 #1: ffffffff8f3c6568 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline]
 #1: ffffffff8f3c6568 (genl_mutex){+.+.}-{3:3}, at: genl_op_lock net/netlink/genetlink.c:58 [inline]
 #1: ffffffff8f3c6568 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x121/0xe50 net/netlink/genetlink.c:1207
2 locks held by syz-executor.2/6154:
 #0: ffffffff8f3c66b0 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1216
 #1: ffffffff8f3c6568 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline]
 #1: ffffffff8f3c6568 (genl_mutex){+.+.}-{3:3}, at: genl_op_lock net/netlink/genetlink.c:58 [inline]
 #1: ffffffff8f3c6568 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x121/0xe50 net/netlink/genetlink.c:1207
2 locks held by syz-executor.1/6157:
 #0: ffffffff8f3c66b0 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1216
 #1: ffffffff8f3c6568 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline]
 #1: ffffffff8f3c6568 (genl_mutex){+.+.}-{3:3}, at: genl_op_lock net/netlink/genetlink.c:58 [inline]
 #1: ffffffff8f3c6568 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x121/0xe50 net/netlink/genetlink.c:1207
2 locks held by syz-executor.3/6160:
 #0: ffffffff8f3c66b0 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1216
 #1: ffffffff8f3c6568 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline]
 #1: ffffffff8f3c6568 (genl_mutex){+.+.}-{3:3}, at: genl_op_lock net/netlink/genetlink.c:58 [inline]
 #1: ffffffff8f3c6568 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x121/0xe50 net/netlink/genetlink.c:1207
2 locks held by syz-executor.0/6202:
 #0: ffffffff8f3c66b0 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1216
 #1: ffffffff8f3c6568 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline]
 #1: ffffffff8f3c6568 (genl_mutex){+.+.}-{3:3}, at: genl_op_lock net/netlink/genetlink.c:58 [inline]
 #1: ffffffff8f3c6568 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x121/0xe50 net/netlink/genetlink.c:1207
2 locks held by syz-executor.5/6205:
 #0: ffffffff8f3c66b0 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1216
 #1: ffffffff8f3c6568 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline]
 #1: ffffffff8f3c6568 (genl_mutex){+.+.}-{3:3}, at: genl_op_lock net/netlink/genetlink.c:58 [inline]
 #1: ffffffff8f3c6568 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x121/0xe50 net/netlink/genetlink.c:1207
2 locks held by syz-executor.4/6211:
 #0: ffffffff8f3c66b0 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1216
 #1: ffffffff8f3c6568 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline]
 #1: ffffffff8f3c6568 (genl_mutex){+.+.}-{3:3}, at: genl_op_lock net/netlink/genetlink.c:58 [inline]
 #1: ffffffff8f3c6568 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x121/0xe50 net/netlink/genetlink.c:1207
2 locks held by syz-executor.1/6216:
 #0: ffffffff8f3c66b0 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1216
 #1: ffffffff8f3c6568 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline]
 #1: ffffffff8f3c6568 (genl_mutex){+.+.}-{3:3}, at: genl_op_lock net/netlink/genetlink.c:58 [inline]
 #1: ffffffff8f3c6568 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x121/0xe50 net/netlink/genetlink.c:1207
2 locks held by syz-executor.2/6218:
 #0: ffffffff8f3c66b0 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1216
 #1: ffffffff8f3c6568 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline]
 #1: ffffffff8f3c6568 (genl_mutex){+.+.}-{3:3}, at: genl_op_lock net/netlink/genetlink.c:58 [inline]
 #1: ffffffff8f3c6568 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x121/0xe50 net/netlink/genetlink.c:1207
2 locks held by syz-executor.3/6220:
 #0: ffffffff8f3c66b0 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1216
 #1: ffffffff8f3c6568 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline]
 #1: ffffffff8f3c6568 (genl_mutex){+.+.}-{3:3}, at: genl_op_lock net/netlink/genetlink.c:58 [inline]
 #1: ffffffff8f3c6568 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x121/0xe50 net/netlink/genetlink.c:1207

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

NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.8.0-rc3-syzkaller-g54be6c6c5ae8 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e7/0x2e0 lib/dump_stack.c:106
 nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
 watchdog+0xfaf/0xff0 kernel/hung_task.c:379
 kthread+0x2ef/0x390 kernel/kthread.c:388
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:242
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 70 Comm: kworker/u4:4 Not tainted 6.8.0-rc3-syzkaller-g54be6c6c5ae8 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
Workqueue: bat_events batadv_nc_worker
RIP: 0010:check_preemption_disabled+0x4b/0x120 lib/smp_processor_id.c:55
Code: 8b 05 31 03 a6 74 a9 ff ff ff 7f 74 26 65 48 8b 04 25 28 00 00 00 48 3b 44 24 08 0f 85 cd 00 00 00 89 d8 48 83 c4 10 5b 41 5c <41> 5e 41 5f c3 cc cc cc cc 48 c7 04 24 00 00 00 00 9c 8f 04 24 f7
RSP: 0018:ffffc900015e7b60 EFLAGS: 00000286
RAX: 0000000000000000 RBX: ffff88805d3a2e00 RCX: ffff8880187b5940
RDX: ffff8880187b5940 RSI: ffffffff8bfd93c0 RDI: ffffffff8bfd9380
RBP: ffff88805ea509c8 R08: ffffffff8b2a5f61 R09: 1ffffffff258a484
R10: dffffc0000000000 R11: fffffbfff258a485 R12: ffff88805ea48c80
R13: 0000000000000139 R14: 0000000000000001 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa3c7856580 CR3: 000000000df32000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 rcu_dynticks_curr_cpu_in_eqs include/linux/context_tracking.h:122 [inline]
 rcu_is_watching+0x15/0xb0 kernel/rcu/tree.c:700
 rcu_read_lock include/linux/rcupdate.h:751 [inline]
 batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:408 [inline]
 batadv_nc_worker+0x10b/0x610 net/batman-adv/network-coding.c:719
 process_one_work kernel/workqueue.c:2633 [inline]
 process_scheduled_works+0x913/0x1420 kernel/workqueue.c:2706
 worker_thread+0xa5f/0x1000 kernel/workqueue.c:2787
 kthread+0x2ef/0x390 kernel/kthread.c:388
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:242
 </TASK>