INFO: task kworker/1:2:1288 blocked for more than 143 seconds.
      Not tainted 6.1.0-rc3-syzkaller-00026-ga8bc8cc193c6 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:2     state:D
 stack:21024 pid:1288  ppid:2      flags:0x00004000
Workqueue: usb_hub_wq hub_event

Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5191 [inline]
 __schedule+0x979/0x2770 kernel/sched/core.c:6503
 schedule+0xda/0x1b0 kernel/sched/core.c:6579
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6638
 __mutex_lock_common kernel/locking/mutex.c:679 [inline]
 __mutex_lock+0xa44/0x1350 kernel/locking/mutex.c:747
 unregister_netdev+0xe/0x20 net/core/dev.c:10905
 usbnet_disconnect+0xe6/0x300 drivers/net/usb/usbnet.c:1616
 usb_unbind_interface+0x1d8/0x8e0 drivers/usb/core/driver.c:458
 device_remove drivers/base/dd.c:550 [inline]
 device_remove+0x11f/0x170 drivers/base/dd.c:542
 __device_release_driver drivers/base/dd.c:1249 [inline]
 device_release_driver_internal+0x4a1/0x700 drivers/base/dd.c:1275
 bus_remove_device+0x2e3/0x590 drivers/base/bus.c:529
 device_del+0x4f3/0xc80 drivers/base/core.c:3704
 usb_disable_device+0x356/0x7a0 drivers/usb/core/message.c:1419
 usb_disconnect.cold+0x259/0x6ed drivers/usb/core/hub.c:2235
 hub_port_connect drivers/usb/core/hub.c:5197 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5497 [inline]
 port_event drivers/usb/core/hub.c:5653 [inline]
 hub_event+0x1f86/0x45c0 drivers/usb/core/hub.c:5735
 process_one_work+0x9bf/0x1710 kernel/workqueue.c:2289
 worker_thread+0x665/0x1080 kernel/workqueue.c:2436
 kthread+0x2ea/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
 </TASK>

Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/11:
 #0: 
ffffffff87c95f50
 (rcu_tasks.tasks_gp_mutex
){+.+.}-{3:3}
, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:507
6 locks held by kworker/0:1/12:
1 lock held by khungtaskd/25:
 #0: ffffffff87c96aa0
 (rcu_read_lock
){....}-{1:2}
, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6494
5 locks held by dhcpcd/1215:
2 locks held by getty/1237:
 #0: ffff88810a136098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244
 #1: 
ffffc900000452f0
 (
&ldata->atomic_read_lock
){+.+.}-{3:3}
, at: n_tty_read+0xef0/0x13e0 drivers/tty/n_tty.c:2177
6 locks held by kworker/1:2/1288:
 #0: ffff888109c85138
 ((wq_completion)usb_hub_wq
){+.+.}-{0:0}
, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
, at: set_work_data kernel/workqueue.c:636 [inline]
, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
, at: process_one_work+0x86d/0x1710 kernel/workqueue.c:2260
 #1: 
ffffc90000587da8 ((work_completion)(&hub->events)){+.+.}-{0:0}
, at: process_one_work+0x8a1/0x1710 kernel/workqueue.c:2264
 #2: ffff88810e965190
 (&dev->mutex
){....}-{3:3}
, at: device_lock include/linux/device.h:835 [inline]
, at: hub_event+0x1bc/0x45c0 drivers/usb/core/hub.c:5681
 #3: ffff88813c747190
 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline]
 (&dev->mutex){....}-{3:3}, at: usb_disconnect.cold+0x43/0x6ed drivers/usb/core/hub.c:2226
 #4: ffff88813c744118 (&dev->mutex){....}-{3:3}
, at: device_lock include/linux/device.h:835 [inline]
, at: __device_driver_lock drivers/base/dd.c:1073 [inline]
, at: device_release_driver_internal+0xa0/0x700 drivers/base/dd.c:1272
 #5: 
ffffffff88cf05e8 (
rtnl_mutex){+.+.}-{3:3}
, at: unregister_netdev+0xe/0x20 net/core/dev.c:10905
6 locks held by kworker/0:4/4044:
 #0: ffff888109c85138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}
, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
, at: set_work_data kernel/workqueue.c:636 [inline]
, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
, at: process_one_work+0x86d/0x1710 kernel/workqueue.c:2260
 #1: ffffc90001b3fda8
 ((work_completion)(&hub->events)
){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1710 kernel/workqueue.c:2264
 #2: 
ffff88810f950190 (&dev->mutex){....}-{3:3}
, at: device_lock include/linux/device.h:835 [inline]
, at: hub_event+0x1bc/0x45c0 drivers/usb/core/hub.c:5681
 #3: ffff888113f1c190
 (&dev->mutex
){....}-{3:3}
, at: device_lock include/linux/device.h:835 [inline]
, at: __device_attach+0x76/0x530 drivers/base/dd.c:983
 #4: ffff88811c2a0118
 (
&dev->mutex
){....}-{3:3}
, at: device_lock include/linux/device.h:835 [inline]
, at: __device_attach+0x76/0x530 drivers/base/dd.c:983
 #5: 
ffffffff88cf05e8
 (rtnl_mutex
){+.+.}-{3:3}
, at: register_netdev+0x11/0x50 net/core/dev.c:10181
3 locks held by kworker/1:0/11499:
 #0: ffff888110bfc138
 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x86d/0x1710 kernel/workqueue.c:2260
 #1: ffffc9000fbbfda8
 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1710 kernel/workqueue.c:2264
 #2: ffffffff88cf05e8
 (
rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0xe/0x20 net/ipv6/addrconf.c:4624
3 locks held by kworker/0:3/22985:
 #0: 
ffff888110bfc138
 ((wq_completion)ipv6_addrconf
){+.+.}-{0:0}
, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
, at: set_work_data kernel/workqueue.c:636 [inline]
, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
, at: process_one_work+0x86d/0x1710 kernel/workqueue.c:2260
 #1: 
ffffc9000244fda8
 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)
){+.+.}-{0:0}
, at: process_one_work+0x8a1/0x1710 kernel/workqueue.c:2264
 #2: ffffffff88cf05e8
 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0xe/0x20 net/ipv6/addrconf.c:4624
4 locks held by kworker/u4:1/23841:
 #0: ffff888100156938 ((wq_completion)netns
){+.+.}-{0:0}
, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
, at: set_work_data kernel/workqueue.c:636 [inline]
, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
, at: process_one_work+0x86d/0x1710 kernel/workqueue.c:2260
 #1: 
ffffc9000db5fda8 (net_cleanup_work){+.+.}-{0:0}
, at: process_one_work+0x8a1/0x1710 kernel/workqueue.c:2264
 #2: ffffffff88cdd610 (
pernet_ops_rwsem
){++++}-{3:3}
, at: cleanup_net+0x9b/0xb00 net/core/net_namespace.c:563
 #3: ffffffff88cf05e8 (rtnl_mutex){+.+.}-{3:3}
, at: sit_exit_batch_net+0x88/0x750 net/ipv6/sit.c:1881
1 lock held by syz-executor.3/26272:
 #0: 
ffffffff88cf05e8
 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:74 [inline]
 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e5/0xca0 net/core/rtnetlink.c:6088

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

NMI backtrace for cpu 0
CPU: 0 PID: 25 Comm: khungtaskd Not tainted 6.1.0-rc3-syzkaller-00026-ga8bc8cc193c6 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
 nmi_cpu_backtrace.cold+0x24/0x18a lib/nmi_backtrace.c:111
 nmi_trigger_cpumask_backtrace+0x32f/0x3c0 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+0xc71/0xfc0 kernel/hung_task.c:377
 kthread+0x2ea/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 1215 Comm: dhcpcd Not tainted 6.1.0-rc3-syzkaller-00026-ga8bc8cc193c6 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
RIP: 0010:check_wait_context kernel/locking/lockdep.c:4975 [inline]
RIP: 0010:__lock_acquire+0x1096/0x56d0 kernel/locking/lockdep.c:5005
Code: d9 07 45 85 ff 0f 85 b5 fd ff ff 48 c7 c6 40 de 67 86 48 c7 c7 80 af 67 86 e8 04 92 a5 04 0f 0b e9 9e fd ff ff bd 02 00 00 00 <e9> 6d f5 ff ff 45 31 f6 e9 13 f5 ff ff 8b 44 24 08 85 c0 0f 84 ec
RSP: 0018:ffffc90000178aa8 EFLAGS: 00000002
RAX: 0000000000000001 RBX: ffff8881132725f4 RCX: 0000000000000001
RDX: 0000000000000000 RSI: 0000000000000020 RDI: ffffffff8b2e8b99
RBP: 0000000000000002 R08: 0000000000000000 R09: dffffc0000000000
R10: fffffbfff165d0d8 R11: 0000000000000001 R12: ffff888113272688
R13: ffff888113271c40 R14: 0000000000000002 R15: 0000000000000003
FS:  00007f19053ce740(0000) GS:ffff8881f6700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000556ec02c0aa8 CR3: 000000010d0f1000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 lock_acquire kernel/locking/lockdep.c:5668 [inline]
 lock_acquire+0x1df/0x630 kernel/locking/lockdep.c:5633
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0x39/0x50 kernel/locking/spinlock.c:162
 debug_object_deactivate lib/debugobjects.c:732 [inline]
 debug_object_deactivate+0x101/0x300 lib/debugobjects.c:720
 debug_timer_deactivate kernel/time/timer.c:787 [inline]
 debug_deactivate kernel/time/timer.c:831 [inline]
 detach_timer kernel/time/timer.c:878 [inline]
 expire_timers kernel/time/timer.c:1508 [inline]
 __run_timers.part.0+0x517/0xaf0 kernel/time/timer.c:1790
 __run_timers kernel/time/timer.c:1768 [inline]
 run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1803
 __do_softirq+0x1e4/0xabb kernel/softirq.c:571
 invoke_softirq kernel/softirq.c:445 [inline]
 __irq_exit_rcu+0x113/0x170 kernel/softirq.c:650
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:662
 sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1107
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:27 [inline]
RIP: 0010:check_kcov_mode kernel/kcov.c:173 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x60 kernel/kcov.c:207
Code: 48 89 ef 5d e9 91 f6 1e 00 5d be 03 00 00 00 e9 d6 5c d0 00 66 0f 1f 44 00 00 48 8b be a8 01 00 00 e8 b4 ff ff ff 31 c0 c3 90 <65> 8b 05 49 a4 bb 7e 89 c1 48 8b 34 24 81 e1 00 01 00 00 65 48 8b
RSP: 0018:ffffc900014f7290 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff888113271c40 RSI: ffffffff812cee21 RDI: 0000000000000007
RBP: ffffc900014f72d0 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000200 R11: 0000000000000000 R12: 0000000000000038
R13: ffff8881009b9c40 R14: 0000000000000200 R15: ffffc900014f73f0
 console_trylock_spinning kernel/printk/printk.c:1919 [inline]
 vprintk_emit+0x3f7/0x5f0 kernel/printk/printk.c:2267
 dev_vprintk_emit+0x36e/0x3b2 drivers/base/core.c:4736
 dev_printk_emit+0xba/0xf1 drivers/base/core.c:4747
 __netdev_printk+0x1c6/0x27a net/core/dev.c:11213
 netdev_warn+0xd7/0x109 net/core/dev.c:11266
 asix_write_cmd.cold+0x3a/0x46 drivers/net/usb/asix_common.c:57
 asix_set_sw_mii drivers/net/usb/asix_common.c:75 [inline]
 asix_check_host_enable+0x9e/0x1c0 drivers/net/usb/asix_common.c:98
 __asix_mdio_read+0x93/0x220 drivers/net/usb/asix_common.c:506
 asix_phy_reset+0x104/0x170 drivers/net/usb/asix_devices.c:215
 ax88178_reset+0x41b/0x13b0 drivers/net/usb/asix_devices.c:1105
 usbnet_open+0xc8/0x5d0 drivers/net/usb/usbnet.c:889
 __dev_open+0x297/0x4d0 net/core/dev.c:1432
 __dev_change_flags+0x583/0x750 net/core/dev.c:8543
 dev_change_flags+0x93/0x170 net/core/dev.c:8614
 devinet_ioctl+0x1601/0x1ce0 net/ipv4/devinet.c:1146
 inet_ioctl+0x1e6/0x320 net/ipv4/af_inet.c:977
 sock_do_ioctl+0xcc/0x230 net/socket.c:1169
 sock_ioctl+0x2f1/0x640 net/socket.c:1286
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:870 [inline]
 __se_sys_ioctl fs/ioctl.c:856 [inline]
 __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:856
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f19054bc0e7
Code: 3c 1c e8 1c ff ff ff 85 c0 79 87 49 c7 c4 ff ff ff ff 5b 5d 4c 89 e0 41 5c c3 66 0f 1f 84 00 00 00 00 00 b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 61 9d 0c 00 f7 d8 64 89 01 48
RSP: 002b:00007ffe0248dce8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f19053ce6c8 RCX: 00007f19054bc0e7
RDX: 00007ffe0249ded8 RSI: 0000000000008914 RDI: 0000000000000005
RBP: 00007ffe024ae088 R08: 00007ffe0249de98 R09: 00007ffe0249de48
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe0249ded8 R14: 0000000000000028 R15: 0000000000008914
 </TASK>