INFO: task kworker/0:2:776 blocked for more than 143 seconds.
Not tainted 6.5.0-rc7-syzkaller-g706a74159504 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:2 state:D stack:22472 pid:776 ppid:2 flags:0x00004000
Workqueue: events nfc_urelease_event_work
Call Trace:
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0x1873/0x48f0 kernel/sched/core.c:6710
schedule+0xc3/0x180 kernel/sched/core.c:6786
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6845
__mutex_lock_common+0xe33/0x2530 kernel/locking/mutex.c:679
__mutex_lock kernel/locking/mutex.c:747 [inline]
mutex_lock_nested+0x1b/0x20 kernel/locking/mutex.c:799
nfc_urelease_event_work+0xa7/0x2f0 net/nfc/netlink.c:1843
process_one_work+0x92c/0x12c0 kernel/workqueue.c:2600
worker_thread+0xa63/0x1210 kernel/workqueue.c:2751
kthread+0x2b8/0x350 kernel/kthread.c:389
ret_from_fork+0x2e/0x60 arch/x86/kernel/process.c:145
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
INFO: task kworker/0:6:5107 blocked for more than 143 seconds.
Not tainted 6.5.0-rc7-syzkaller-g706a74159504 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:6 state:D stack:21512 pid:5107 ppid:2 flags:0x00004000
Workqueue: events nfc_urelease_event_work
Call Trace:
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0x1873/0x48f0 kernel/sched/core.c:6710
schedule+0xc3/0x180 kernel/sched/core.c:6786
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6845
__mutex_lock_common+0xe33/0x2530 kernel/locking/mutex.c:679
__mutex_lock kernel/locking/mutex.c:747 [inline]
mutex_lock_nested+0x1b/0x20 kernel/locking/mutex.c:799
nci_request net/nfc/nci/core.c:149 [inline]
nci_stop_poll+0x123/0x480 net/nfc/nci/core.c:873
nfc_stop_poll+0xea/0x220 net/nfc/core.c:259
nfc_urelease_event_work+0x160/0x2f0 net/nfc/netlink.c:1852
process_one_work+0x92c/0x12c0 kernel/workqueue.c:2600
worker_thread+0xa63/0x1210 kernel/workqueue.c:2751
kthread+0x2b8/0x350 kernel/kthread.c:389
ret_from_fork+0x2e/0x60 arch/x86/kernel/process.c:145
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
INFO: task kworker/u4:8:5873 blocked for more than 143 seconds.
Not tainted 6.5.0-rc7-syzkaller-g706a74159504 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:8 state:D stack:24680 pid:5873 ppid:2 flags:0x00004000
Workqueue: nfc2_nci_rx_wq nci_rx_work
Call Trace:
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0x1873/0x48f0 kernel/sched/core.c:6710
schedule+0xc3/0x180 kernel/sched/core.c:6786
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6845
__mutex_lock_common+0xe33/0x2530 kernel/locking/mutex.c:679
__mutex_lock kernel/locking/mutex.c:747 [inline]
mutex_lock_nested+0x1b/0x20 kernel/locking/mutex.c:799
device_lock include/linux/device.h:958 [inline]
nfc_targets_found+0x26f/0x590 net/nfc/core.c:778
nci_ntf_packet+0x442c/0x4f40
nci_rx_work+0x14c/0x2b0 net/nfc/nci/core.c:1517
process_one_work+0x92c/0x12c0 kernel/workqueue.c:2600
worker_thread+0xa63/0x1210 kernel/workqueue.c:2751
kthread+0x2b8/0x350 kernel/kthread.c:389
ret_from_fork+0x2e/0x60 arch/x86/kernel/process.c:145
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
INFO: task syz-executor.0:29604 blocked for more than 144 seconds.
Not tainted 6.5.0-rc7-syzkaller-g706a74159504 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:24808 pid:29604 ppid:5042 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0x1873/0x48f0 kernel/sched/core.c:6710
schedule+0xc3/0x180 kernel/sched/core.c:6786
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6845
__mutex_lock_common+0xe33/0x2530 kernel/locking/mutex.c:679
__mutex_lock kernel/locking/mutex.c:747 [inline]
mutex_lock_nested+0x1b/0x20 kernel/locking/mutex.c:799
nfc_unregister_device+0x175/0x2a0 net/nfc/core.c:1181
virtual_ncidev_close+0x59/0x90 drivers/nfc/virtual_ncidev.c:163
__fput+0x3f8/0x950 fs/file_table.c:384
task_work_run+0x24a/0x300 kernel/task_work.c:179
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop+0xd9/0x100 kernel/entry/common.c:171
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204
__syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline]
syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:297
do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7eff0847b9da
RSP: 002b:00007ffe58bce450 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000005 RCX: 00007eff0847b9da
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 00007eff0859d980 R08: 0000001b2ea20000 R09: 0000000000000000
R10: 00000000818f7e03 R11: 0000000000000293 R12: 00000000000ddb1d
R13: ffffffffffffffff R14: 00007eff08000000 R15: 00000000000dd7dc
INFO: task syz-executor.3:29611 blocked for more than 144 seconds.
Not tainted 6.5.0-rc7-syzkaller-g706a74159504 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:25872 pid:29611 ppid:5053 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0x1873/0x48f0 kernel/sched/core.c:6710
schedule+0xc3/0x180 kernel/sched/core.c:6786
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6845
__mutex_lock_common+0xe33/0x2530 kernel/locking/mutex.c:679
__mutex_lock kernel/locking/mutex.c:747 [inline]
mutex_lock_nested+0x1b/0x20 kernel/locking/mutex.c:799
nfc_unregister_device+0x175/0x2a0 net/nfc/core.c:1181
virtual_ncidev_close+0x59/0x90 drivers/nfc/virtual_ncidev.c:163
__fput+0x3f8/0x950 fs/file_table.c:384
task_work_run+0x24a/0x300 kernel/task_work.c:179
exit_task_work include/linux/task_work.h:38 [inline]
do_exit+0x68f/0x2290 kernel/exit.c:874
do_group_exit+0x206/0x2c0 kernel/exit.c:1024
get_signal+0x1709/0x17e0 kernel/signal.c:2881
arch_do_signal_or_restart+0x91/0x670 arch/x86/kernel/signal.c:308
exit_to_user_mode_loop+0x6a/0x100 kernel/entry/common.c:168
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204
__syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline]
syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:297
do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fb8f107cae9
RSP: 002b:00007fb8f1e6e0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: 000000000000001c RBX: 00007fb8f119bf80 RCX: 00007fb8f107cae9
RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000005
RBP: 00007fb8f10c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fb8f119bf80 R15: 00007ffcedc48b38
INFO: task syz-executor.1:29621 blocked for more than 144 seconds.
Not tainted 6.5.0-rc7-syzkaller-g706a74159504 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:25976 pid:29621 ppid:5047 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0x1873/0x48f0 kernel/sched/core.c:6710
schedule+0xc3/0x180 kernel/sched/core.c:6786
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6845
__mutex_lock_common+0xe33/0x2530 kernel/locking/mutex.c:679
__mutex_lock kernel/locking/mutex.c:747 [inline]
mutex_lock_nested+0x1b/0x20 kernel/locking/mutex.c:799
nfc_unregister_device+0x175/0x2a0 net/nfc/core.c:1181
virtual_ncidev_close+0x59/0x90 drivers/nfc/virtual_ncidev.c:163
__fput+0x3f8/0x950 fs/file_table.c:384
task_work_run+0x24a/0x300 kernel/task_work.c:179
exit_task_work include/linux/task_work.h:38 [inline]
do_exit+0x68f/0x2290 kernel/exit.c:874
do_group_exit+0x206/0x2c0 kernel/exit.c:1024
get_signal+0x1709/0x17e0 kernel/signal.c:2881
arch_do_signal_or_restart+0x91/0x670 arch/x86/kernel/signal.c:308
exit_to_user_mode_loop+0x6a/0x100 kernel/entry/common.c:168
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204
__syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline]
syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:297
do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f7e97a7e7dc
RSP: 002b:00007f7e9887ff60 EFLAGS: 00000293 ORIG_RAX: 000000000000002c
RAX: 000000000000001c RBX: 00007f7e98880050 RCX: 00007f7e97a7e7dc
RDX: 000000000000001c RSI: 00007f7e988800a0 RDI: 0000000000000005
RBP: 0000000000000000 R08: 00007f7e9887ffb4 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 00007f7e98880008 R14: 00007f7e988800a0 R15: 0000000000000000
INFO: task syz-executor.2:29645 blocked for more than 145 seconds.
Not tainted 6.5.0-rc7-syzkaller-g706a74159504 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:27024 pid:29645 ppid:5049 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0x1873/0x48f0 kernel/sched/core.c:6710
schedule+0xc3/0x180 kernel/sched/core.c:6786
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6845
__mutex_lock_common+0xe33/0x2530 kernel/locking/mutex.c:679
__mutex_lock kernel/locking/mutex.c:747 [inline]
mutex_lock_nested+0x1b/0x20 kernel/locking/mutex.c:799
nfc_unregister_device+0x175/0x2a0 net/nfc/core.c:1181
virtual_ncidev_close+0x59/0x90 drivers/nfc/virtual_ncidev.c:163
__fput+0x3f8/0x950 fs/file_table.c:384
task_work_run+0x24a/0x300 kernel/task_work.c:179
get_signal+0x160e/0x17e0 kernel/signal.c:2657
arch_do_signal_or_restart+0x91/0x670 arch/x86/kernel/signal.c:308
exit_to_user_mode_loop+0x6a/0x100 kernel/entry/common.c:168
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204
__syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline]
syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:297
do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fad2927cae9
RSP: 002b:00007fad29f3d0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: fffffffffffffff2 RBX: 00007fad2939c120 RCX: 00007fad2927cae9
RDX: 0000000000000064 RSI: 0000000020000380 RDI: 0000000000000003
RBP: 00007fad292c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007fad2939c120 R15: 00007fffd776f778
INFO: task syz-executor.5:29608 blocked for more than 145 seconds.
Not tainted 6.5.0-rc7-syzkaller-g706a74159504 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:24808 pid:29608 ppid:5058 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0x1873/0x48f0 kernel/sched/core.c:6710
schedule+0xc3/0x180 kernel/sched/core.c:6786
schedule_timeout+0xb0/0x310 kernel/time/timer.c:2143
do_wait_for_common+0x449/0x5f0 kernel/sched/completion.c:85
__wait_for_common kernel/sched/completion.c:106 [inline]
wait_for_common kernel/sched/completion.c:117 [inline]
wait_for_completion+0x4a/0x60 kernel/sched/completion.c:138
__flush_workqueue+0x743/0x1620 kernel/workqueue.c:3177
nci_close_device+0x189/0x600 net/nfc/nci/core.c:579
nci_unregister_device+0x40/0x240 net/nfc/nci/core.c:1292
virtual_ncidev_close+0x59/0x90 drivers/nfc/virtual_ncidev.c:163
__fput+0x3f8/0x950 fs/file_table.c:384
task_work_run+0x24a/0x300 kernel/task_work.c:179
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop+0xd9/0x100 kernel/entry/common.c:171
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204
__syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline]
syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:297
do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fc12a27b9da
RSP: 002b:00007ffd14267fb0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000004 RCX: 00007fc12a27b9da
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00007fc12a39d980 R08: 0000001b2ef20000 R09: 0000000000000108
R10: 000000008132c472 R11: 0000000000000293 R12: 00000000000ddb08
R13: ffffffffffffffff R14: 00007fc129e00000 R15: 00000000000dd7c7
Showing all locks held in the system:
3 locks held by kworker/0:1/9:
#0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7e3/0x12c0 kernel/workqueue.c:2572
#1: ffffc900000e7d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work+0x82b/0x12c0 kernel/workqueue.c:2574
#2: ffffffff8e7ce0c8 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x2f0 net/nfc/netlink.c:1843
1 lock held by rcu_tasks_kthre/13:
#0: ffffffff8d3295f0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:522
1 lock held by rcu_tasks_trace/14:
#0: ffffffff8d3299b0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:522
3 locks held by kworker/1:0/22:
#0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7e3/0x12c0 kernel/workqueue.c:2572
#1: ffffc900001c7d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work+0x82b/0x12c0 kernel/workqueue.c:2574
#2: ffffffff8e7ce0c8 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x2f0 net/nfc/netlink.c:1843
1 lock held by khungtaskd/28:
#0: ffffffff8d329420 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
3 locks held by kworker/0:2/776:
#0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7e3/0x12c0 kernel/workqueue.c:2572
#1: ffffc90003f4fd00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work+0x82b/0x12c0 kernel/workqueue.c:2574
#2: ffffffff8e7ce0c8 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x2f0 net/nfc/netlink.c:1843
3 locks held by kworker/1:2/2165:
#0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7e3/0x12c0 kernel/workqueue.c:2572
#1: ffffc90008f37d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work+0x82b/0x12c0 kernel/workqueue.c:2574
#2: ffffffff8e7ce0c8 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x2f0 net/nfc/netlink.c:1843
2 locks held by getty/4765:
#0: ffff888028b37098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900015b02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b1/0x1dc0 drivers/tty/n_tty.c:2187
3 locks held by kworker/0:5/5106:
#0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7e3/0x12c0 kernel/workqueue.c:2572
#1: ffffc900048cfd00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work+0x82b/0x12c0 kernel/workqueue.c:2574
#2: ffffffff8e7ce0c8 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x2f0 net/nfc/netlink.c:1843
6 locks held by kworker/0:6/5107:
#0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7e3/0x12c0 kernel/workqueue.c:2572
#1: ffffc900048dfd00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work+0x82b/0x12c0 kernel/workqueue.c:2574
#2: ffffffff8e7ce0c8 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x2f0 net/nfc/netlink.c:1843
#3: ffff88802c675508 (&genl_data->genl_data_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0x111/0x2f0 net/nfc/netlink.c:1849
#4: ffff88802c675100 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:958 [inline]
#4: ffff88802c675100 (&dev->mutex){....}-{3:3}, at: nfc_stop_poll+0x3c/0x220 net/nfc/core.c:247
#5: ffff88802c670350 (&ndev->req_lock){+.+.}-{3:3}, at: nci_request net/nfc/nci/core.c:149 [inline]
#5: ffff88802c670350 (&ndev->req_lock){+.+.}-{3:3}, at: nci_stop_poll+0x123/0x480 net/nfc/nci/core.c:873
3 locks held by kworker/1:9/5169:
#0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7e3/0x12c0 kernel/workqueue.c:2572
#1: ffffc90004bc7d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work+0x82b/0x12c0 kernel/workqueue.c:2574
#2: ffffffff8e7ce0c8 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x2f0 net/nfc/netlink.c:1843
3 locks held by kworker/u4:8/5873:
#0: ffff8880760b1138 ((wq_completion)nfc2_nci_rx_wq){+.+.}-{0:0}, at: process_one_work+0x7e3/0x12c0 kernel/workqueue.c:2572
#1: ffffc90014c7fd00 ((work_completion)(&ndev->rx_work)){+.+.}-{0:0}, at: process_one_work+0x82b/0x12c0 kernel/workqueue.c:2574
#2: ffff88802c675100 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:958 [inline]
#2: ffff88802c675100 (&dev->mutex){....}-{3:3}, at: nfc_targets_found+0x26f/0x590 net/nfc/core.c:778
3 locks held by kworker/0:9/11444:
#0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7e3/0x12c0 kernel/workqueue.c:2572
#1: ffffc90014fd7d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work+0x82b/0x12c0 kernel/workqueue.c:2574
#2: ffffffff8e7ce0c8 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x2f0 net/nfc/netlink.c:1843
3 locks held by kworker/0:11/15325:
#0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7e3/0x12c0 kernel/workqueue.c:2572
#1: ffffc9001491fd00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work+0x82b/0x12c0 kernel/workqueue.c:2574
#2: ffffffff8e7ce0c8 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x2f0 net/nfc/netlink.c:1843
3 locks held by kworker/0:13/16625:
#0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7e3/0x12c0 kernel/workqueue.c:2572
#1: ffffc90005ebfd00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work+0x82b/0x12c0 kernel/workqueue.c:2574
#2: ffffffff8e7ce0c8 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x2f0 net/nfc/netlink.c:1843
3 locks held by kworker/1:13/19901:
#0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7e3/0x12c0 kernel/workqueue.c:2572
#1: ffffc90005f9fd00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work+0x82b/0x12c0 kernel/workqueue.c:2574
#2: ffffffff8e7ce0c8 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x2f0 net/nfc/netlink.c:1843
3 locks held by kworker/0:15/21285:
#0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7e3/0x12c0 kernel/workqueue.c:2572
#1: ffffc90016c57d00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work+0x82b/0x12c0 kernel/workqueue.c:2574
#2: ffffffff8e7ce0c8 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x2f0 net/nfc/netlink.c:1843
3 locks held by kworker/0:16/23235:
#0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7e3/0x12c0 kernel/workqueue.c:2572
#1: ffffc9000319fd00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work+0x82b/0x12c0 kernel/workqueue.c:2574
#2: ffffffff8e7ce0c8 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x2f0 net/nfc/netlink.c:1843
3 locks held by kworker/1:16/23466:
#0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7e3/0x12c0 kernel/workqueue.c:2572
#1: ffffc9000387fd00 ((work_completion)(&w->w)){+.+.}-{0:0}, at: process_one_work+0x82b/0x12c0 kernel/workqueue.c:2574
#2: ffffffff8e7ce0c8 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_urelease_event_work+0xa7/0x2f0 net/nfc/netlink.c:1843
1 lock held by syz-executor.0/29604:
#0: ffffffff8e7ce0c8 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_unregister_device+0x175/0x2a0 net/nfc/core.c:1181
1 lock held by syz-executor.0/29648:
#0: ffffffff8e7ce0c8 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_unregister_device+0x175/0x2a0 net/nfc/core.c:1181
1 lock held by syz-executor.3/29611:
#0: ffffffff8e7ce0c8 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_unregister_device+0x175/0x2a0 net/nfc/core.c:1181
1 lock held by syz-executor.1/29621:
#0: ffffffff8e7ce0c8 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_unregister_device+0x175/0x2a0 net/nfc/core.c:1181
1 lock held by syz-executor.2/29645:
#0: ffffffff8e7ce0c8 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_unregister_device+0x175/0x2a0 net/nfc/core.c:1181
1 lock held by syz-executor.5/29608:
#0: ffff88802c670350 (&ndev->req_lock){+.+.}-{3:3}, at: nci_close_device+0x10a/0x600 net/nfc/nci/core.c:561
1 lock held by syz-executor.0/29792:
#0: ffffffff8da70448 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x380 drivers/char/misc.c:129
1 lock held by syz-executor.5/29799:
#0: ffffffff8da70448 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x380 drivers/char/misc.c:129
1 lock held by syz-executor.1/29801:
#0: ffffffff8da70448 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x380 drivers/char/misc.c:129
1 lock held by syz-executor.2/29802:
#0: ffffffff8da70448 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x380 drivers/char/misc.c:129
2 locks held by syz-executor.3/29867:
#0: ffffffff8da70448 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x380 drivers/char/misc.c:129
#1: ffffffff8e7ce0c8 (nfc_devlist_mutex){+.+.}-{3:3}, at: nfc_register_device+0x3c/0x320 net/nfc/core.c:1116
1 lock held by syz-executor.4/29877:
#0: ffffffff8da70448 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x380 drivers/char/misc.c:129
1 lock held by syz-executor.3/30146:
#0: ffffffff8da70448 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x380 drivers/char/misc.c:129
1 lock held by syz-executor.4/30148:
#0: ffffffff8da70448 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x380 drivers/char/misc.c:129
1 lock held by syz-executor.0/30150:
#0: ffffffff8da70448 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x380 drivers/char/misc.c:129
1 lock held by syz-executor.2/30152:
#0: ffffffff8da70448 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x380 drivers/char/misc.c:129
1 lock held by syz-executor.5/30155:
#0: ffffffff8da70448 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x380 drivers/char/misc.c:129
1 lock held by syz-executor.1/30156:
#0: ffffffff8da70448 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5c/0x380 drivers/char/misc.c:129
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.5.0-rc7-syzkaller-g706a74159504 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x498/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x187/0x300 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+0xec2/0xf00 kernel/hung_task.c:379
kthread+0x2b8/0x350 kernel/kthread.c:389
ret_from_fork+0x2e/0x60 arch/x86/kernel/process.c:145
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 10 Comm: kworker/u4:0 Not tainted 6.5.0-rc7-syzkaller-g706a74159504 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
Workqueue: bat_events batadv_nc_worker
RIP: 0010:__lock_acquire+0xdd7/0x7f70 kernel/locking/lockdep.c:5117
Code: 48 8d 3c c5 00 43 7b 90 be 08 00 00 00 e8 a1 6a 79 00 49 b8 00 00 00 00 00 fc ff df 48 0f a3 1d 8f 21 10 0f 0f 83 ce 0a 00 00 <49> 8d 9d b8 0a 00 00 48 89 d8 48 c1 e8 03 48 89 84 24 80 00 00 00
RSP: 0018:ffffc900000f76a0 EFLAGS: 00000057
RAX: 0000000000000001 RBX: 00000000000006dd RCX: ffffffff816b215f
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff907b43d8
RBP: ffffc900000f7968 R08: dffffc0000000000 R09: 1ffffffff20f687b
R10: dffffc0000000000 R11: fffffbfff20f687c R12: ffff888016252880
R13: ffff888016251dc0 R14: ffff8880162528d8 R15: ffff8880162528f8
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055c26137b078 CR3: 000000000d130000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire+0x1e3/0x520 kernel/locking/lockdep.c:5761
__raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline]
_raw_spin_lock_bh+0x35/0x50 kernel/locking/spinlock.c:178
spin_lock_bh include/linux/spinlock.h:356 [inline]
batadv_nc_purge_paths+0xe8/0x3a0 net/batman-adv/network-coding.c:442
batadv_nc_worker+0x30f/0x5c0 net/batman-adv/network-coding.c:722
process_one_work+0x92c/0x12c0 kernel/workqueue.c:2600
worker_thread+0xa63/0x1210 kernel/workqueue.c:2751
kthread+0x2b8/0x350 kernel/kthread.c:389
ret_from_fork+0x2e/0x60 arch/x86/kernel/process.c:145
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304