INFO: task kworker/0:2:136 blocked for more than 143 seconds.
Not tainted 5.16.0-rc6-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:2 state:D stack:25480 pid: 136 ppid: 2 flags:0x00004000
Workqueue: usb_hub_wq hub_event
Call Trace:
context_switch kernel/sched/core.c:4972 [inline]
__schedule+0xa9a/0x4940 kernel/sched/core.c:6253
schedule+0xd2/0x260 kernel/sched/core.c:6326
usb_kill_urb.part.0+0x19a/0x220 drivers/usb/core/urb.c:720
usb_kill_urb+0x7f/0xa0 drivers/usb/core/urb.c:715
usb_start_wait_urb+0x24a/0x4c0 drivers/usb/core/message.c:64
usb_internal_control_msg drivers/usb/core/message.c:102 [inline]
usb_control_msg+0x31c/0x4a0 drivers/usb/core/message.c:153
usb_get_descriptor+0xdd/0x1d0 drivers/usb/core/message.c:793
usb_get_device_descriptor+0x81/0xf0 drivers/usb/core/message.c:1071
hub_port_init+0x971/0x2e80 drivers/usb/core/hub.c:4922
hub_port_connect drivers/usb/core/hub.c:5282 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5497 [inline]
port_event drivers/usb/core/hub.c:5643 [inline]
hub_event+0x21ea/0x4460 drivers/usb/core/hub.c:5725
process_one_work+0x9b2/0x1690 kernel/workqueue.c:2298
worker_thread+0x658/0x11f0 kernel/workqueue.c:2445
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Showing all locks held in the system:
2 locks held by kworker/u4:1/10:
#0: ffff888010c74138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888010c74138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888010c74138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1198 [inline]
#0: ffff888010c74138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:635 [inline]
#0: ffff888010c74138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:662 [inline]
#0: ffff888010c74138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x896/0x1690 kernel/workqueue.c:2269
#1: ffffc90000f0fdb0 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work+0x8ca/0x1690 kernel/workqueue.c:2273
1 lock held by khungtaskd/27:
#0: ffffffff8bb81320 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6458
5 locks held by kworker/0:2/136:
#0: ffff88814219d538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff88814219d538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff88814219d538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1198 [inline]
#0: ffff88814219d538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:635 [inline]
#0: ffff88814219d538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:662 [inline]
#0: ffff88814219d538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x896/0x1690 kernel/workqueue.c:2269
#1: ffffc900027e7db0 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8ca/0x1690 kernel/workqueue.c:2273
#2: ffff88801f4af220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline]
#2: ffff88801f4af220 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4460 drivers/usb/core/hub.c:5671
#3: ffff888147cb95c0 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3086 [inline]
#3: ffff888147cb95c0 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5249 [inline]
#3: ffff888147cb95c0 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5497 [inline]
#3: ffff888147cb95c0 (&port_dev->status_lock){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5643 [inline]
#3: ffff888147cb95c0 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_event+0x1e17/0x4460 drivers/usb/core/hub.c:5725
#4: ffff88801def7168 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5250 [inline]
#4: ffff88801def7168 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5497 [inline]
#4: ffff88801def7168 (hcd->address0_mutex){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5643 [inline]
#4: ffff88801def7168 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_event+0x1e40/0x4460 drivers/usb/core/hub.c:5725
2 locks held by getty/3281:
#0: ffff88807ece6098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:252
#1: ffffc90002b8e2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcf0/0x1230 drivers/tty/n_tty.c:2113
5 locks held by syz-executor.2/3638:
4 locks held by kworker/0:10/6030:
#0: ffff8880b9c39b18 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2b/0x120 kernel/sched/core.c:478
#1: ffff8880b9c279c8 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x3a6/0x490 kernel/sched/psi.c:880
#2: ffff8880b9c28070 (krc.lock){..-.}-{2:2}, at: kfree_rcu_monitor+0x2f/0x830 kernel/rcu/tree.c:3332
#3: ffff8880b9c28298 (&base->lock){-.-.}-{2:2}, at: lock_timer_base+0x5a/0x1f0 kernel/time/timer.c:946
3 locks held by kworker/u4:13/758:
5 locks held by kworker/u4:27/2903:
2 locks held by kworker/u4:28/2904:
#0: ffff888010c74138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888010c74138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888010c74138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1198 [inline]
#0: ffff888010c74138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:635 [inline]
#0: ffff888010c74138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:662 [inline]
#0: ffff888010c74138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x896/0x1690 kernel/workqueue.c:2269
#1: ffffc9000a78fdb0 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work+0x8ca/0x1690 kernel/workqueue.c:2273
1 lock held by syz-executor.0/21624:
#0: ffff888076e2f868 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:102 [inline]
#0: ffff888076e2f868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x633/0x1c00 fs/pipe.c:570
1 lock held by syz-executor.0/21628:
3 locks held by syz-executor.1/21639:
2 locks held by syz-executor.4/21648:
#0: ffff88801e106468 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_lock_nested fs/pipe.c:81 [inline]
#0: ffff88801e106468 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_lock+0x5a/0x70 fs/pipe.c:89
#1: ffffffff908536e0 (nfnl_subsys_ctnetlink){+.+.}-{3:3}, at: nfnl_lock net/netfilter/nfnetlink.c:93 [inline]
#1: ffffffff908536e0 (nfnl_subsys_ctnetlink){+.+.}-{3:3}, at: nfnetlink_rcv_msg+0xaaa/0x13f0 net/netfilter/nfnetlink.c:290
2 locks held by syz-executor.3/21649:
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 27 Comm: khungtaskd Not tainted 5.16.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x1b3/0x230 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline]
watchdog+0xc1d/0xf50 kernel/hung_task.c:295
kthread+0x405/0x4f0 kernel/kthread.c:327
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: 758 Comm: kworker/u4:13 Not tainted 5.16.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: wg-kex-wg2 wg_packet_handshake_send_worker
RIP: 0010:check_preemption_disabled+0x41/0x170 lib/smp_processor_id.c:56
Code: 7d c5 bc 76 65 8b 1d ee 1f bd 76 81 e3 ff ff ff 7f 31 ff 89 de 0f 1f 44 00 00 85 db 74 11 0f 1f 44 00 00 44 89 e0 5b 5d 41 5c <41> 5d 41 5e c3 0f 1f 44 00 00 9c 5b 81 e3 00 02 00 00 31 ff 48 89
RSP: 0018:ffffc90000007c70 EFLAGS: 00000002
RAX: 0000000000000000 RBX: 0000000000039b00 RCX: ffffffff8d911b64
RDX: 1ffffffff16ab714 RSI: 0000000000010404 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: ffff888011c2511f
R10: ffffffff83feb744 R11: 0000000000000000 R12: ffff888011c25000
R13: ffffffff8a049fe0 R14: ffff8880b9d39b00 R15: 0000000000000008
FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020001504 CR3: 000000006b654000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000006000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
select_idle_cpu kernel/sched/fair.c:6242 [inline]
select_idle_sibling kernel/sched/fair.c:6452 [inline]
select_task_rq_fair+0x9ff/0x3b50 kernel/sched/fair.c:6929
select_task_rq kernel/sched/core.c:3419 [inline]
try_to_wake_up+0x38b/0x15a0 kernel/sched/core.c:4104
hrtimer_wakeup+0x43/0x60 kernel/time/hrtimer.c:1939
__run_hrtimer kernel/time/hrtimer.c:1685 [inline]
__hrtimer_run_queues+0x609/0xe50 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x31c/0x790 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1086 [inline]
__sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1103
sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1097
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:iptunnel_xmit_stats include/net/ip_tunnels.h:446 [inline]
RIP: 0010:iptunnel_xmit+0x73f/0xa50 net/ipv4/ip_tunnel_core.c:87
Code: f9 48 8d bd f8 05 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 0e 03 00 00 48 8b 9d f8 05 00 00 4c 16 80 01 83 f8 07 89 c5 0f 87 a7 02 00 00 48 8d 3c ed a0 b8
RSP: 0018:ffffc90005197978 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: 0000607f4608d960 RCX: 1ffffffff2099338
RDX: 1ffff110053658bf RSI: ffffffff87c53adc RDI: ffff888029b2c5f8
RBP: ffff888029b2c000 R08: 0000000000000000 R09: ffffffff8ff7baf7
R10: ffffffff87c53a4a R11: 0000000000000000 R12: 0000000000000094
R13: 0000000000000001 R14: ffff888079724100 R15: ffff88802e040d00
send4+0x42a/0xe50 drivers/net/wireguard/socket.c:85
wg_socket_send_skb_to_peer+0x192/0x220 drivers/net/wireguard/socket.c:174
wg_socket_send_buffer_to_peer+0x127/0x170 drivers/net/wireguard/socket.c:199
wg_packet_send_handshake_initiation+0x212/0x340 drivers/net/wireguard/send.c:40
wg_packet_handshake_send_worker+0x18/0x30 drivers/net/wireguard/send.c:51
process_one_work+0x9b2/0x1690 kernel/workqueue.c:2298
worker_thread+0x658/0x11f0 kernel/workqueue.c:2445
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
----------------
Code disassembly (best guess), 3 bytes skipped:
0: 76 65 jbe 0x67
2: 8b 1d ee 1f bd 76 mov 0x76bd1fee(%rip),%ebx # 0x76bd1ff6
8: 81 e3 ff ff ff 7f and $0x7fffffff,%ebx
e: 31 ff xor %edi,%edi
10: 89 de mov %ebx,%esi
12: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
17: 85 db test %ebx,%ebx
19: 74 11 je 0x2c
1b: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
20: 44 89 e0 mov %r12d,%eax
23: 5b pop %rbx
24: 5d pop %rbp
25: 41 5c pop %r12
* 27: 41 5d pop %r13 <-- trapping instruction
29: 41 5e pop %r14
2b: c3 retq
2c: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
31: 9c pushfq
32: 5b pop %rbx
33: 81 e3 00 02 00 00 and $0x200,%ebx
39: 31 ff xor %edi,%edi
3b: 48 rex.W
3c: 89 .byte 0x89