INFO: task systemd-shutdow:1 blocked for more than 143 seconds.
      Not tainted 5.10.0-rc3-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:systemd-shutdow state:D stack:23432 pid:    1 ppid:     0 flags:0x00000000
Call Trace:
 context_switch kernel/sched/core.c:3774 [inline]
 __schedule+0x8a2/0x1f30 kernel/sched/core.c:4523
 schedule+0xcb/0x270 kernel/sched/core.c:4601
 wait_for_device_probe+0x1be/0x220 drivers/base/dd.c:702
 device_shutdown+0x18/0x5c0 drivers/base/core.c:4007
 kernel_restart_prepare kernel/reboot.c:76 [inline]
 kernel_restart kernel/reboot.c:246 [inline]
 __do_sys_reboot.cold+0x5d/0x97 kernel/reboot.c:347
 do_syscall_64+0x2d/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7fe999bf28c6
Code: Unable to access opcode bytes at RIP 0x7fe999bf289c.
RSP: 002b:00007ffc7c1f84e8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a9
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fe999bf28c6
RDX: 0000000001234567 RSI: 0000000028121969 RDI: fffffffffee1dead
RBP: 00007ffc7c1f8578 R08: 0000000000002800 R09: 0000000000000005
R10: 0000000000000002 R11: 0000000000000206 R12: 0000000000000000
R13: 0000000000000000 R14: 000055b3a984e150 R15: 00007ffc7c1f8868

Showing all locks held in the system:
1 lock held by systemd-shutdow/1:
 #0: ffffffff871288a8 (system_transition_mutex){+.+.}-{3:3}, at: __do_sys_reboot+0x1a4/0x3e0 kernel/reboot.c:344
1 lock held by khungtaskd/1267:
 #0: ffffffff872492e0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x269 kernel/locking/lockdep.c:6253
6 locks held by kworker/1:7/7546:
 #0: ffff888103de0138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff888103de0138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:856 [inline]
 #0: ffff888103de0138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline]
 #0: ffff888103de0138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:616 [inline]
 #0: ffff888103de0138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:643 [inline]
 #0: ffff888103de0138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x821/0x1520 kernel/workqueue.c:2243
 #1: ffffc90006247da8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x854/0x1520 kernel/workqueue.c:2247
 #2: ffff888108d79218 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:731 [inline]
 #2: ffff888108d79218 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c5/0x42d0 drivers/usb/core/hub.c:5537
 #3: 
ffff8881341ea218 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:731 [inline]
ffff8881341ea218 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7a/0x4a0 drivers/base/dd.c:887
 #4: ffff88810c8f71a8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:731 [inline]
 #4: ffff88810c8f71a8 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7a/0x4a0 drivers/base/dd.c:887
 #5: ffff888111790c60 (&dev->phy_mutex){+.+.}-{3:3}, at: asix_mdio_read+0x9a/0x320 drivers/net/usb/asix_common.c:452

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

NMI backtrace for cpu 0
CPU: 0 PID: 1267 Comm: khungtaskd Not tainted 5.10.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x107/0x163 lib/dump_stack.c:118
 nmi_cpu_backtrace.cold+0x46/0xe0 lib/nmi_backtrace.c:105
 nmi_trigger_cpumask_backtrace+0x1da/0x200 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:209 [inline]
 watchdog+0xd32/0xf70 kernel/hung_task.c:294
 kthread+0x38c/0x460 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 7546 Comm: kworker/1:7 Not tainted 5.10.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: usb_hub_wq hub_event
RIP: 0010:rebalance_domains+0x247/0xdb0 kernel/sched/fair.c:9961
Code: 00 48 8b 05 1b f2 df 05 49 8d 7c 24 50 48 29 c5 48 89 f8 48 c1 e8 03 42 80 3c 10 00 0f 85 47 08 00 00 48 85 ed 49 8b 44 24 50 <8b> 8c 24 80 00 00 00 0f 88 d0 00 00 00 49 01 c5 85 c9 0f 85 f8 00
RSP: 0018:ffffc90000148e88 EFLAGS: 00000202
RAX: 0000000000003533 RBX: ffff8881f6b32dc0 RCX: 1ffffffff1079d1f
RDX: 0000000000000000 RSI: ffffffff872492e0 RDI: ffff888100202c50
RBP: 0000000000000049 R08: 0000000000000001 R09: ffffffff898c84a7
R10: dffffc0000000000 R11: 0000000000000000 R12: ffff888100202c00
R13: 0000000000000000 R14: fffffbfff0e01e30 R15: fffffbfff0e01e30
FS:  0000000000000000(0000) GS:ffff8881f6b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe99a1de730 CR3: 0000000007025000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 __do_softirq+0x1b2/0x945 kernel/softirq.c:298
 asm_call_irq_on_stack+0xf/0x20
 </IRQ>
 __run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline]
 run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline]
 do_softirq_own_stack+0x80/0xa0 arch/x86/kernel/irq_64.c:77
 invoke_softirq kernel/softirq.c:393 [inline]
 __irq_exit_rcu kernel/softirq.c:423 [inline]
 irq_exit_rcu+0x110/0x1a0 kernel/softirq.c:435
 sysvec_apic_timer_interrupt+0x43/0xa0 arch/x86/kernel/apic/apic.c:1091
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:631
RIP: 0010:console_trylock_spinning kernel/printk/printk.c:1841 [inline]
RIP: 0010:vprintk_emit+0x36b/0x4d0 kernel/printk/printk.c:2027
Code: c7 80 b7 15 87 e8 25 77 fd ff e8 00 1d 00 00 31 ff 48 89 ee e8 56 e4 15 00 48 85 ed 0f 85 54 01 00 00 e8 98 eb 15 00 41 55 9d <e8> 90 eb 15 00 45 31 c9 41 b8 01 00 00 00 31 c9 68 73 e0 28 81 ba
RSP: 0018:ffffc90006246c68 EFLAGS: 00000246
RAX: 0000000000040000 RBX: 0000000000000000 RCX: ffffc90010003000
RDX: 0000000000040000 RSI: ffffffff8128e078 RDI: ffffffff8128e1d1
RBP: 0000000000000200 R08: 0000000000000001 R09: ffffffff898c856f
R10: fffffbfff13190ad R11: 0000000000000000 R12: 0000000000000057
R13: 0000000000000246 R14: ffff888103356500 R15: 0000000000000000
 dev_vprintk_emit+0x2ea/0x32e drivers/base/core.c:4128
 dev_printk_emit+0xba/0xf1 drivers/base/core.c:4139
 __netdev_printk+0x1c6/0x27a net/core/dev.c:10946
 netdev_err+0xd7/0x109 net/core/dev.c:10998
 asix_set_sw_mii drivers/net/usb/asix_common.c:278 [inline]
 asix_set_sw_mii drivers/net/usb/asix_common.c:272 [inline]
 asix_mdio_read.cold+0x61/0xa5 drivers/net/usb/asix_common.c:454
 asix_phy_reset+0x104/0x170 drivers/net/usb/asix_devices.c:215
 ax88172_bind+0x412/0x5d0 drivers/net/usb/asix_devices.c:272
 usbnet_probe+0xb54/0x2740 drivers/net/usb/usbnet.c:1712
 usb_probe_interface+0x315/0x7f0 drivers/usb/core/driver.c:396
 really_probe+0x291/0xde0 drivers/base/dd.c:554
 driver_probe_device+0x26b/0x3d0 drivers/base/dd.c:738
 __device_attach_driver+0x1d1/0x290 drivers/base/dd.c:844
 bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:431
 __device_attach+0x228/0x4a0 drivers/base/dd.c:912
 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:491
 device_add+0xbb2/0x1ce0 drivers/base/core.c:2936
 usb_set_configuration+0x113c/0x1910 drivers/usb/core/message.c:2168
 usb_generic_driver_probe+0xba/0x100 drivers/usb/core/generic.c:238
 usb_probe_device+0xd9/0x2c0 drivers/usb/core/driver.c:293
 really_probe+0x291/0xde0 drivers/base/dd.c:554
 driver_probe_device+0x26b/0x3d0 drivers/base/dd.c:738
 __device_attach_driver+0x1d1/0x290 drivers/base/dd.c:844
 bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:431
 __device_attach+0x228/0x4a0 drivers/base/dd.c:912
 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:491
 device_add+0xbb2/0x1ce0 drivers/base/core.c:2936
 usb_new_device.cold+0x71d/0xfe9 drivers/usb/core/hub.c:2555
 hub_port_connect drivers/usb/core/hub.c:5223 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5363 [inline]
 port_event drivers/usb/core/hub.c:5509 [inline]
 hub_event+0x2348/0x42d0 drivers/usb/core/hub.c:5591
 process_one_work+0x933/0x1520 kernel/workqueue.c:2272
 worker_thread+0x64c/0x1120 kernel/workqueue.c:2418
 kthread+0x38c/0x460 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296