INFO: task syz-executor:5834 blocked for more than 143 seconds.
Not tainted 6.14.0-rc5-syzkaller-00218-g2a520073e74f #0
Blocked by coredump.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:20496 pid:5834 tgid:5834 ppid:1 task_flags:0x40014c flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5378 [inline]
__schedule+0x190e/0x4c90 kernel/sched/core.c:6765
__schedule_loop kernel/sched/core.c:6842 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6857
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6914
__mutex_lock_common kernel/locking/mutex.c:662 [inline]
__mutex_lock+0x817/0x1010 kernel/locking/mutex.c:730
rfkill_unregister+0xd0/0x230 net/rfkill/core.c:1145
hci_unregister_dev+0x366/0x510 net/bluetooth/hci_core.c:2694
vhci_release+0x80/0xd0 drivers/bluetooth/hci_vhci.c:664
__fput+0x3eb/0x9f0 fs/file_table.c:464
task_work_run+0x251/0x310 kernel/task_work.c:227
exit_task_work include/linux/task_work.h:40 [inline]
do_exit+0xa2a/0x28e0 kernel/exit.c:938
do_group_exit+0x207/0x2c0 kernel/exit.c:1087
__do_sys_exit_group kernel/exit.c:1098 [inline]
__se_sys_exit_group kernel/exit.c:1096 [inline]
__x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1096
x64_sys_call+0x26a8/0x26b0 arch/x86/include/generated/asm/syscalls_64.h:232
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb48598d169
RSP: 002b:00007ffe8f828188 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007fb485a0e0b1 RCX: 00007fb48598d169
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001
RBP: 0000000000000005 R08: 00007ffe8f825f27 R09: 00007ffe8f829440
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe8f829440
R13: 00007fb485a0e08c R14: 000000000001b33f R15: 00007ffe8f82a510
INFO: task kworker/0:5:5896 blocked for more than 143 seconds.
Not tainted 6.14.0-rc5-syzkaller-00218-g2a520073e74f #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:5 state:D stack:23992 pid:5896 tgid:5896 ppid:2 task_flags:0x4208060 flags:0x00004000
Workqueue: events rfkill_global_led_trigger_worker
Call Trace:
context_switch kernel/sched/core.c:5378 [inline]
__schedule+0x190e/0x4c90 kernel/sched/core.c:6765
__schedule_loop kernel/sched/core.c:6842 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6857
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6914
__mutex_lock_common kernel/locking/mutex.c:662 [inline]
__mutex_lock+0x817/0x1010 kernel/locking/mutex.c:730
rfkill_global_led_trigger_worker+0x27/0xd0 net/rfkill/core.c:182
process_one_work kernel/workqueue.c:3238 [inline]
process_scheduled_works+0xac0/0x18e0 kernel/workqueue.c:3319
worker_thread+0x870/0xd30 kernel/workqueue.c:3400
kthread+0x7ab/0x920 kernel/kthread.c:464
ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
INFO: task syz.3.72:6165 blocked for more than 144 seconds.
Not tainted 6.14.0-rc5-syzkaller-00218-g2a520073e74f #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.72 state:D stack:24160 pid:6165 tgid:6165 ppid:5845 task_flags:0x400040 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5378 [inline]
__schedule+0x190e/0x4c90 kernel/sched/core.c:6765
__schedule_loop kernel/sched/core.c:6842 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6857
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6914
__mutex_lock_common kernel/locking/mutex.c:662 [inline]
__mutex_lock+0x817/0x1010 kernel/locking/mutex.c:730
rfkill_unregister+0xd0/0x230 net/rfkill/core.c:1145
nfc_unregister_device+0x96/0x2a0 net/nfc/core.c:1167
virtual_ncidev_close+0x56/0x90 drivers/nfc/virtual_ncidev.c:172
__fput+0x3eb/0x9f0 fs/file_table.c:464
task_work_run+0x251/0x310 kernel/task_work.c:227
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x13f/0x340 kernel/entry/common.c:218
do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f216d18d169
RSP: 002b:00007ffc7594f4d8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007f216d3a7ba0 RCX: 00007f216d18d169
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007f216d3a7ba0 R08: 000000000000e2fc R09: 000000087594f7cf
R10: 00007f216d3a7ac0 R11: 0000000000000246 R12: 0000000000019007
R13: 00007f216d3a6080 R14: ffffffffffffffff R15: 00007ffc7594f5f0
Showing all locks held in the system:
1 lock held by rcu_exp_gp_kthr/20:
#0: ffff8880b873e958 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:598
1 lock held by khungtaskd/31:
#0: ffffffff8eb39320 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8eb39320 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8eb39320 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6746
4 locks held by klogd/5190:
#0: ffff8880b873e958 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:598
#1: ffff8880b8728948 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:598
#2: ffffffff9a8640c8 (&obj_hash[i].lock){-.-.}-{2:2}, at: debug_object_deactivate+0x158/0x390 lib/debugobjects.c:873
#3: ffff8880b873e958 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:598
2 locks held by getty/5589:
#0: ffff88803580a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc90002fde2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x616/0x1770 drivers/tty/n_tty.c:2211
1 lock held by syz-executor/5829:
#0: ffffffff901af328 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_unregister+0xd0/0x230 net/rfkill/core.c:1145
1 lock held by syz-executor/5831:
#0: ffffffff901af328 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_unregister+0xd0/0x230 net/rfkill/core.c:1145
1 lock held by syz-executor/5834:
#0: ffffffff901af328 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_unregister+0xd0/0x230 net/rfkill/core.c:1145
1 lock held by syz-executor/5838:
#0: ffffffff901af328 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_unregister+0xd0/0x230 net/rfkill/core.c:1145
3 locks held by kworker/1:3/5839:
#0: ffff88801b078d48 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline]
#0: ffff88801b078d48 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x98b/0x18e0 kernel/workqueue.c:3319
#1: ffffc90002e67c60 (free_ipc_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline]
#1: ffffc90002e67c60 (free_ipc_work){+.+.}-{0:0}, at: process_scheduled_works+0x9c6/0x18e0 kernel/workqueue.c:3319
#2: ffffffff8eb3e7f8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock kernel/rcu/tree_exp.h:302 [inline]
#2: ffffffff8eb3e7f8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x381/0x820 kernel/rcu/tree_exp.h:996
3 locks held by kworker/0:5/5896:
#0: ffff88801b078d48 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline]
#0: ffff88801b078d48 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x98b/0x18e0 kernel/workqueue.c:3319
#1: ffffc90003de7c60 ((work_completion)(&rfkill_global_led_trigger_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline]
#1: ffffc90003de7c60 ((work_completion)(&rfkill_global_led_trigger_work)){+.+.}-{0:0}, at: process_scheduled_works+0x9c6/0x18e0 kernel/workqueue.c:3319
#2: ffffffff901af328 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_global_led_trigger_worker+0x27/0xd0 net/rfkill/core.c:182
4 locks held by kworker/0:6/5898:
#0: ffff88801b078d48 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline]
#0: ffff88801b078d48 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x98b/0x18e0 kernel/workqueue.c:3319
#1: ffffc9000418fc60 ((rfkill_op_work).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline]
#1: ffffc9000418fc60 ((rfkill_op_work).work){+.+.}-{0:0}, at: process_scheduled_works+0x9c6/0x18e0 kernel/workqueue.c:3319
#2: ffffffff901af328 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_epo+0x4f/0x180 net/rfkill/core.c:462
#3: ffff88805afaf100 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1030 [inline]
#3: ffff88805afaf100 (&dev->mutex){....}-{4:4}, at: nfc_dev_down net/nfc/core.c:143 [inline]
#3: ffff88805afaf100 (&dev->mutex){....}-{4:4}, at: nfc_rfkill_set_block+0x50/0x310 net/nfc/core.c:179
2 locks held by syz.3.72/6165:
#0: ffff88805afaf100 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1030 [inline]
#0: ffff88805afaf100 (&dev->mutex){....}-{4:4}, at: nfc_unregister_device+0x63/0x2a0 net/nfc/core.c:1165
#1: ffffffff901af328 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_unregister+0xd0/0x230 net/rfkill/core.c:1145
1 lock held by syz.4.138/6477:
#0: ffffffff901af328 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_unregister+0xd0/0x230 net/rfkill/core.c:1145
2 locks held by syz-executor/6505:
#0: ffff888079ce0918 (&data->open_mutex){+.+.}-{4:4}, at: vhci_create_device+0x34/0x6b0 drivers/bluetooth/hci_vhci.c:469
#1: ffffffff901af328 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_register+0x34/0x8c0 net/rfkill/core.c:1071
2 locks held by syz-executor/6729:
#0: ffff8880314b5118 (&data->open_mutex){+.+.}-{4:4}, at: vhci_create_device+0x34/0x6b0 drivers/bluetooth/hci_vhci.c:469
#1: ffffffff901af328 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_register+0x34/0x8c0 net/rfkill/core.c:1071
2 locks held by syz-executor/6794:
#0: ffff888055437118 (&data->open_mutex){+.+.}-{4:4}, at: vhci_create_device+0x34/0x6b0 drivers/bluetooth/hci_vhci.c:469
#1: ffffffff901af328 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_register+0x34/0x8c0 net/rfkill/core.c:1071
2 locks held by syz-executor/7059:
#0: ffff88802777a118 (&data->open_mutex){+.+.}-{4:4}, at: vhci_create_device+0x34/0x6b0 drivers/bluetooth/hci_vhci.c:469
#1: ffffffff901af328 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_register+0x34/0x8c0 net/rfkill/core.c:1071
2 locks held by syz-executor/7061:
#0: ffff88805a135918 (&data->open_mutex){+.+.}-{4:4}, at: vhci_create_device+0x34/0x6b0 drivers/bluetooth/hci_vhci.c:469
#1: ffffffff901af328 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_register+0x34/0x8c0 net/rfkill/core.c:1071
2 locks held by syz-executor/7063:
#0: ffff8880577dc118 (&data->open_mutex){+.+.}-{4:4}, at: vhci_create_device+0x34/0x6b0 drivers/bluetooth/hci_vhci.c:469
#1: ffffffff901af328 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_register+0x34/0x8c0 net/rfkill/core.c:1071
2 locks held by syz-executor/7065:
#0: ffff88807bdea118 (&data->open_mutex){+.+.}-{4:4}, at: vhci_create_device+0x34/0x6b0 drivers/bluetooth/hci_vhci.c:469
#1: ffffffff901af328 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_register+0x34/0x8c0 net/rfkill/core.c:1071
2 locks held by syz-executor/7071:
#0: ffff888054c2a118 (&data->open_mutex){+.+.}-{4:4}, at: vhci_create_device+0x34/0x6b0 drivers/bluetooth/hci_vhci.c:469
#1: ffffffff901af328 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_register+0x34/0x8c0 net/rfkill/core.c:1071
2 locks held by syz-executor/7073:
#0: ffff88802a49a918 (&data->open_mutex){+.+.}-{4:4}, at: vhci_create_device+0x34/0x6b0 drivers/bluetooth/hci_vhci.c:469
#1: ffffffff901af328 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_register+0x34/0x8c0 net/rfkill/core.c:1071
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.14.0-rc5-syzkaller-00218-g2a520073e74f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
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:162 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:236 [inline]
watchdog+0x1058/0x10a0 kernel/hung_task.c:399
kthread+0x7ab/0x920 kernel/kthread.c:464
ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 36 Comm: kworker/u8:2 Not tainted 6.14.0-rc5-syzkaller-00218-g2a520073e74f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Workqueue: events_unbound nsim_dev_trap_report_work
RIP: 0010:get_timer_cpu_base kernel/time/timer.c:964 [inline]
RIP: 0010:get_timer_base kernel/time/timer.c:986 [inline]
RIP: 0010:lock_timer_base kernel/time/timer.c:1045 [inline]
RIP: 0010:__mod_timer+0x202/0x10e0 kernel/time/timer.c:1127
Code: fc 07 0f 87 e4 00 00 00 e8 2b 87 13 00 31 db 41 f7 c5 00 00 10 00 0f 94 c3 44 89 ee 81 e6 00 00 08 00 b8 02 00 00 00 0f 45 d8 <31> ff e8 47 8b 13 00 4c 69 f3 c0 10 00 00 4a 8d 1c e5 50 1b 55 8e
RSP: 0018:ffffc90000ac78e0 EFLAGS: 00000046
RAX: 0000000000000002 RBX: 0000000000000001 RCX: ffff888141af1e00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000008
RBP: ffffc90000ac7a10 R08: ffffffff81ae57b6 R09: 1ffffffff3517c70
R10: dffffc0000000000 R11: fffffbfff3517c71 R12: 0000000000000001
R13: 0000000000200001 R14: 00000000fffff04b R15: 1ffff1100f506c0d
FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055f0b743b238 CR3: 000000000e938000 CR4: 0000000000350ef0
Call Trace:
queue_delayed_work_on+0x1ca/0x390 kernel/workqueue.c:2561
process_one_work kernel/workqueue.c:3238 [inline]
process_scheduled_works+0xac0/0x18e0 kernel/workqueue.c:3319
worker_thread+0x870/0xd30 kernel/workqueue.c:3400
kthread+0x7ab/0x920 kernel/kthread.c:464
ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244