INFO: task kworker/0:4:4295 blocked for more than 143 seconds.
Not tainted 6.1.133-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:4 state:D stack:22816 pid:4295 ppid:2 flags:0x00004000
Workqueue: events rfkill_global_led_trigger_worker
Call Trace:
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0x143f/0x4570 kernel/sched/core.c:6561
schedule+0xbf/0x180 kernel/sched/core.c:6637
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6696
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0x6b9/0xd80 kernel/locking/mutex.c:747
rfkill_global_led_trigger_worker+0x23/0xd0 net/rfkill/core.c:181
process_one_work+0x917/0x1260 kernel/workqueue.c:2292
worker_thread+0xa47/0x1200 kernel/workqueue.c:2439
kthread+0x28d/0x320 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
INFO: task syz.1.539:5838 blocked for more than 143 seconds.
Not tainted 6.1.133-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.539 state:D stack:23648 pid:5838 ppid:4249 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0x143f/0x4570 kernel/sched/core.c:6561
schedule+0xbf/0x180 kernel/sched/core.c:6637
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6696
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0x6b9/0xd80 kernel/locking/mutex.c:747
device_lock include/linux/device.h:837 [inline]
nfc_dev_down net/nfc/core.c:143 [inline]
nfc_rfkill_set_block+0x4c/0x2f0 net/nfc/core.c:179
rfkill_set_block+0x1e7/0x430 net/rfkill/core.c:345
rfkill_fop_write+0x5b7/0x790 net/rfkill/core.c:1286
vfs_write+0x2d9/0xbc0 fs/read_write.c:582
ksys_write+0x19c/0x2c0 fs/read_write.c:637
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f1b1018d169
RSP: 002b:00007f1b11005038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f1b103a5fa0 RCX: 00007f1b1018d169
RDX: 0000000000000008 RSI: 0000200000000080 RDI: 0000000000000007
RBP: 00007f1b1020e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f1b103a5fa0 R15: 00007fff38df3c98
INFO: task syz.0.541:5844 blocked for more than 143 seconds.
Not tainted 6.1.133-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.541 state:D stack:25864 pid:5844 ppid:4251 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0x143f/0x4570 kernel/sched/core.c:6561
schedule+0xbf/0x180 kernel/sched/core.c:6637
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6696
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0x6b9/0xd80 kernel/locking/mutex.c:747
rfkill_unregister+0xcc/0x220 net/rfkill/core.c:1130
nfc_unregister_device+0x92/0x290 net/nfc/core.c:1167
virtual_ncidev_close+0x55/0x90 drivers/nfc/virtual_ncidev.c:170
__fput+0x3f6/0x8d0 fs/file_table.c:320
task_work_run+0x246/0x300 kernel/task_work.c:203
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop+0xde/0x100 kernel/entry/common.c:177
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:210
__syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
syscall_exit_to_user_mode+0x60/0x270 kernel/entry/common.c:303
do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:87
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f1f70f8d169
RSP: 002b:00007ffe48b2d5e8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007f1f711a7ba0 RCX: 00007f1f70f8d169
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007f1f711a7ba0 R08: 0000000000006c5c R09: 0000000548b2d8df
R10: 00007f1f711a7ac0 R11: 0000000000000246 R12: 00000000000295d1
R13: 00007ffe48b2d6e0 R14: ffffffffffffffff R15: 00007ffe48b2d700
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8d32e910 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xe30 kernel/rcu/tasks.h:517
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8d32f110 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xe30 kernel/rcu/tasks.h:517
1 lock held by khungtaskd/28:
#0: ffffffff8d32e740 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:350 [inline]
#0: ffffffff8d32e740 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:791 [inline]
#0: ffffffff8d32e740 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x51/0x290 kernel/locking/lockdep.c:6510
5 locks held by kworker/u4:3/46:
2 locks held by getty/4005:
#0: ffff88814ca8d098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244
#1: ffffc9000325e2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x54a/0x1620 drivers/tty/n_tty.c:2198
1 lock held by syz-executor/4258:
#0: ffffffff8e812c08 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_unregister+0xcc/0x220 net/rfkill/core.c:1130
3 locks held by kworker/0:4/4295:
#0: ffff888017c70938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x806/0x1260 kernel/workqueue.c:2267
#1: ffffc90003f97d20 ((work_completion)(&rfkill_global_led_trigger_work)){+.+.}-{0:0}, at: process_one_work+0x806/0x1260 kernel/workqueue.c:2267
#2: ffffffff8e812c08 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_global_led_trigger_worker+0x23/0xd0 net/rfkill/core.c:181
2 locks held by syz.1.539/5838:
#0: ffffffff8e812c08 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x1a5/0x790 net/rfkill/core.c:1278
#1: ffff8880290d7100 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:837 [inline]
#1: ffff8880290d7100 (&dev->mutex){....}-{3:3}, at: nfc_dev_down net/nfc/core.c:143 [inline]
#1: ffff8880290d7100 (&dev->mutex){....}-{3:3}, at: nfc_rfkill_set_block+0x4c/0x2f0 net/nfc/core.c:179
2 locks held by syz.0.541/5844:
#0: ffff8880290d7100 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:837 [inline]
#0: ffff8880290d7100 (&dev->mutex){....}-{3:3}, at: nfc_unregister_device+0x5f/0x290 net/nfc/core.c:1165
#1: ffffffff8e812c08 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_unregister+0xcc/0x220 net/rfkill/core.c:1130
2 locks held by syz-executor/6216:
#0: ffff888029988118 (&data->open_mutex){+.+.}-{3:3}, at: vhci_create_device+0x34/0x700 drivers/bluetooth/hci_vhci.c:378
#1: ffffffff8e812c08 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_register+0x30/0x880 net/rfkill/core.c:1057
2 locks held by syz-executor/6217:
#0: ffff88807b44a918 (&data->open_mutex){+.+.}-{3:3}, at: vhci_create_device+0x34/0x700 drivers/bluetooth/hci_vhci.c:378
#1: ffffffff8e812c08 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_register+0x30/0x880 net/rfkill/core.c:1057
2 locks held by syz-executor/7160:
#0: ffff888027452918 (&data->open_mutex){+.+.}-{3:3}, at: vhci_create_device+0x34/0x700 drivers/bluetooth/hci_vhci.c:378
#1: ffffffff8e812c08 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_register+0x30/0x880 net/rfkill/core.c:1057
2 locks held by syz-executor/7163:
#0: ffff888055f31918 (&data->open_mutex){+.+.}-{3:3}, at: vhci_create_device+0x34/0x700 drivers/bluetooth/hci_vhci.c:378
#1: ffffffff8e812c08 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_register+0x30/0x880 net/rfkill/core.c:1057
2 locks held by syz-executor/7794:
#0: ffff888055727118 (&data->open_mutex){+.+.}-{3:3}, at: vhci_create_device+0x34/0x700 drivers/bluetooth/hci_vhci.c:378
#1: ffffffff8e812c08 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_register+0x30/0x880 net/rfkill/core.c:1057
2 locks held by syz.2.1215/7868:
#0: ffffffff8daaf548 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x58/0x380 drivers/char/misc.c:107
#1: ffffffff8e812c08 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_open+0x130/0x680 net/rfkill/core.c:1163
1 lock held by syz.3.1222/7891:
#0: ffffffff8daaf548 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x58/0x380 drivers/char/misc.c:107
1 lock held by syz-executor/7898:
#0: ffffffff8daaf548 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x58/0x380 drivers/char/misc.c:107
1 lock held by syz-executor/7899:
#0: ffffffff8daaf548 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x58/0x380 drivers/char/misc.c:107
1 lock held by syz-executor/7901:
#0: ffffffff8daaf548 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x58/0x380 drivers/char/misc.c:107
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.1.133-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
nmi_cpu_backtrace+0x4e1/0x560 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x1ca/0x430 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline]
watchdog+0xf88/0xfd0 kernel/hung_task.c:377
kthread+0x28d/0x320 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 4293 Comm: kworker/u4:5 Not tainted 6.1.133-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Workqueue: wg-kex-wg1 wg_packet_handshake_send_worker
RIP: 0010:__sanitizer_cov_trace_cmp8+0x0/0x80 kernel/kcov.c:293
Code: 39 c8 77 22 89 f8 89 f6 49 ff c2 4c 89 11 48 c7 44 0a 08 04 00 00 00 48 89 44 0a 10 48 89 74 0a 18 4c 89 44 0a 20 c3 0f 1f 00 <4c> 8b 04 24 65 48 8b 0d 04 c3 77 7e 65 8b 05 05 c3 77 7e 25 00 01
RSP: 0018:ffffc90003ea66b8 EFLAGS: 00000206
RAX: ffffffff8aabc5ca RBX: 0000000000000001 RCX: ffff88802c933b80
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 000000007ffffff9
RBP: ffffc90003ea67b0 R08: 0000000000000001 R09: ffffffff8aabc5a0
R10: 0000000000000012 R11: ffff88802c933b80 R12: ffffc90003ea6a06
R13: 000000007ffffff9 R14: dffffc0000000000 R15: ffffffff8b0ce445
FS: 0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f26c86d7d60 CR3: 000000002fed5000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
vsnprintf+0x1c8/0x1c70 lib/vsprintf.c:2765
sprintf+0xd6/0x120 lib/vsprintf.c:3009
print_time kernel/printk/printk.c:1274 [inline]
info_print_prefix+0x167/0x300 kernel/printk/printk.c:1300
record_print_text+0x142/0x430 kernel/printk/printk.c:1349
console_emit_next_record+0x635/0xc30 kernel/printk/printk.c:2760
console_flush_all kernel/printk/printk.c:-1 [inline]
console_unlock+0x278/0x7c0 kernel/printk/printk.c:2906
vprintk_emit+0x523/0x740 kernel/printk/printk.c:2303
_printk+0xd1/0x111 kernel/printk/printk.c:2328
ip_vs_schedule+0x192d/0x2280 net/netfilter/ipvs/ip_vs_core.c:518
udp_conn_schedule+0x38d/0x740 net/netfilter/ipvs/ip_vs_proto_udp.c:78
ip_vs_try_to_schedule net/netfilter/ipvs/ip_vs_core.c:1488 [inline]
ip_vs_in_hook+0xe16/0x2230 net/netfilter/ipvs/ip_vs_core.c:2056
nf_hook_entry_hookfn include/linux/netfilter.h:142 [inline]
nf_hook_slow+0xae/0x1e0 net/netfilter/core.c:614
nf_hook+0x2c0/0x450 include/linux/netfilter.h:257
__ip_local_out+0x4ae/0x5c0 net/ipv4/ip_output.c:115
ip_local_out+0x26/0x120 net/ipv4/ip_output.c:124
iptunnel_xmit+0x51a/0x920 net/ipv4/ip_tunnel_core.c:82
udp_tunnel_xmit_skb+0x230/0x350 net/ipv4/udp_tunnel_core.c:172
send4+0xb84/0x11e0 drivers/net/wireguard/socket.c:85
wg_socket_send_skb_to_peer+0xd1/0x1d0 drivers/net/wireguard/socket.c:175
wg_packet_send_handshake_initiation drivers/net/wireguard/send.c:40 [inline]
wg_packet_handshake_send_worker+0x1d9/0x310 drivers/net/wireguard/send.c:51
process_one_work+0x917/0x1260 kernel/workqueue.c:2292
worker_thread+0xa47/0x1200 kernel/workqueue.c:2439
kthread+0x28d/0x320 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295