INFO: task kworker/0:2:754 blocked for more than 143 seconds.
      Not tainted 6.4.0-syzkaller-01224-g1ef6663a587b #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:2     state:D stack:25888 pid:754   ppid:2      flags:0x00004000
Workqueue: usb_hub_wq hub_event
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5343 [inline]
 __schedule+0xc9a/0x5880 kernel/sched/core.c:6669
 schedule+0xde/0x1a0 kernel/sched/core.c:6745
 usb_kill_urb.part.0+0x19a/0x220 drivers/usb/core/urb.c:728
 usb_kill_urb+0x83/0xa0 drivers/usb/core/urb.c:717
 usb_start_wait_urb+0x24a/0x4b0 drivers/usb/core/message.c:64
 usb_internal_control_msg drivers/usb/core/message.c:102 [inline]
 usb_control_msg+0x320/0x4a0 drivers/usb/core/message.c:153
 usb_get_descriptor+0xe1/0x1d0 drivers/usb/core/message.c:793
 usb_get_device_descriptor+0x85/0xf0 drivers/usb/core/message.c:1072
 hub_port_init+0x859/0x3900 drivers/usb/core/hub.c:4969
 hub_port_connect drivers/usb/core/hub.c:5336 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5551 [inline]
 port_event drivers/usb/core/hub.c:5711 [inline]
 hub_event+0x2b89/0x4e40 drivers/usb/core/hub.c:5793
 process_one_work+0x99a/0x15e0 kernel/workqueue.c:2408
 worker_thread+0x67d/0x10c0 kernel/workqueue.c:2555
 kthread+0x344/0x440 kernel/kthread.c:379
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>

Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/13:
 #0: ffffffff8c798430 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:518
1 lock held by rcu_tasks_trace/14:
 #0: ffffffff8c798130 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:518
1 lock held by khungtaskd/27:
 #0: ffffffff8c799040 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x340 kernel/locking/lockdep.c:6559
5 locks held by kworker/0:2/754:
 #0: ffff888146a55138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff888146a55138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff888146a55138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1324 [inline]
 #0: ffff888146a55138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:643 [inline]
 #0: ffff888146a55138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:670 [inline]
 #0: ffff888146a55138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x883/0x15e0 kernel/workqueue.c:2379
 #1: ffffc9000493fdb0 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8b7/0x15e0 kernel/workqueue.c:2383
 #2: ffff88814276a190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:837 [inline]
 #2: ffff88814276a190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c0/0x4e40 drivers/usb/core/hub.c:5739
 #3: ffff88814276d4f8 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3147 [inline]
 #3: ffff88814276d4f8 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5303 [inline]
 #3: ffff88814276d4f8 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5551 [inline]
 #3: ffff88814276d4f8 (&port_dev->status_lock){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5711 [inline]
 #3: ffff88814276d4f8 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_event+0x278e/0x4e40 drivers/usb/core/hub.c:5793
 #4: ffff8881423f5168 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5304 [inline]
 #4: ffff8881423f5168 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5551 [inline]
 #4: ffff8881423f5168 (hcd->address0_mutex){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5711 [inline]
 #4: ffff8881423f5168 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_event+0x27c3/0x4e40 drivers/usb/core/hub.c:5793
2 locks held by getty/4754:
 #0: ffff88802cb32098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x26/0x80 drivers/tty/tty_ldisc.c:243
 #1: ffffc900015c02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xf02/0x13f0 drivers/tty/n_tty.c:2176
1 lock held by strace-static-x/4996:
 #0: ffffffff8c40a098 (tasklist_lock){.+.+}-{2:2}, at: do_wait+0x283/0xc30 kernel/exit.c:1607

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

NMI backtrace for cpu 1
CPU: 1 PID: 27 Comm: khungtaskd Not tainted 6.4.0-syzkaller-01224-g1ef6663a587b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd9/0x150 lib/dump_stack.c:106
 nmi_cpu_backtrace+0x29c/0x350 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x2a4/0x300 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
 watchdog+0xe16/0x1090 kernel/hung_task.c:379
 kthread+0x344/0x440 kernel/kthread.c:379
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 18949 Comm: syz-executor386 Not tainted 6.4.0-syzkaller-01224-g1ef6663a587b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
RIP: 0010:check_kcov_mode kernel/kcov.c:173 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0xb/0x70 kernel/kcov.c:207
Code: 0f 1e fa 48 8b be b0 01 00 00 e8 b0 ff ff ff 31 c0 c3 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 f3 0f 1e fa 65 8b 05 cd 4e 7f 7e <89> c1 48 8b 34 24 81 e1 00 01 00 00 65 48 8b 14 25 c0 b9 03 00 a9
RSP: 0018:ffffc90000007618 EFLAGS: 00000286
RAX: 0000000080000102 RBX: 000000000006b4dc RCX: 0000000000000100
RDX: 1ffff11047ffde00 RSI: ffffffff81e219ac RDI: 0000000000000007
RBP: 000000000000000d R08: 0000000000000007 R09: 000000000007ffff
R10: 000000000000000d R11: 0000000000094001 R12: ffff88813fff9000
R13: 0000000000000000 R14: dffffc0000000000 R15: ffffc900000078b0
FS:  0000555556c50300(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6cd5de501d CR3: 000000006b588000 CR4: 0000000000350ef0
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 __nr_to_section include/linux/mmzone.h:1848 [inline]
 __pfn_to_section include/linux/mmzone.h:1953 [inline]
 lookup_page_ext mm/page_ext.c:284 [inline]
 page_ext_get+0xfd/0x320 mm/page_ext.c:168
 __page_table_check_zero+0x138/0x5d0 mm/page_table_check.c:142
 prep_new_page mm/page_alloc.c:1751 [inline]
 get_page_from_freelist+0xf41/0x2c00 mm/page_alloc.c:3523
 __alloc_pages+0x1cb/0x4a0 mm/page_alloc.c:4794
 __alloc_pages_node include/linux/gfp.h:237 [inline]
 alloc_pages_node include/linux/gfp.h:260 [inline]
 page_frag_alloc_1k net/core/skbuff.c:243 [inline]
 __napi_alloc_skb+0x4dc/0x710 net/core/skbuff.c:820
 napi_alloc_skb include/linux/skbuff.h:3261 [inline]
 page_to_skb+0x14d/0xa10 drivers/net/virtio_net.c:495
 receive_mergeable drivers/net/virtio_net.c:1346 [inline]
 receive_buf+0x11b7/0x61b0 drivers/net/virtio_net.c:1481
 virtnet_receive drivers/net/virtio_net.c:1779 [inline]
 virtnet_poll+0x742/0x14b0 drivers/net/virtio_net.c:1851
 __napi_poll+0xb7/0x6f0 net/core/dev.c:6498
 napi_poll net/core/dev.c:6565 [inline]
 net_rx_action+0x8a9/0xcb0 net/core/dev.c:6698
 __do_softirq+0x1d4/0x905 kernel/softirq.c:553
 invoke_softirq kernel/softirq.c:427 [inline]
 __irq_exit_rcu kernel/softirq.c:632 [inline]
 irq_exit_rcu+0xb7/0x120 kernel/softirq.c:644
 common_interrupt+0xad/0xd0 arch/x86/kernel/irq.c:247
 </IRQ>
 <TASK>
 asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:636
RIP: 0010:lock_release+0x4/0x670 kernel/locking/lockdep.c:5713
Code: f4 fe ff ff 48 c7 c7 ac 37 7b 8e e8 b6 69 71 00 e9 66 fe ff ff 48 c7 c7 ac 37 7b 8e e8 a5 69 71 00 e9 f0 fd ff ff f3 0f 1e fa <48> b8 00 00 00 00 00 fc ff df 41 57 41 56 41 55 41 54 49 89 fc 55
RSP: 0018:ffffc9000f717d20 EFLAGS: 00000292
RAX: 0000000000000000 RBX: 1ffff92001ee2fad RCX: 0000000000000000
RDX: ffff88802b32bb80 RSI: ffffffff81ecb201 RDI: ffff888071182510
RBP: ffff8880711824f8 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000094001 R12: ffff8880742c2ac0
R13: ffff8880742c2b48 R14: ffffffff8b5d8b00 R15: ffff888019a56000
 __raw_spin_unlock include/linux/spinlock_api_smp.h:141 [inline]
 _raw_spin_unlock+0x16/0x40 kernel/locking/spinlock.c:186
 d_instantiate fs/dcache.c:2036 [inline]
 d_instantiate+0x71/0xa0 fs/dcache.c:2030
 alloc_file_pseudo+0x155/0x250 fs/file_table.c:329
 sock_alloc_file+0x53/0x1d0 net/socket.c:466
 __sys_socketpair+0x2ff/0x570 net/socket.c:1750
 __do_sys_socketpair net/socket.c:1779 [inline]
 __se_sys_socketpair net/socket.c:1776 [inline]
 __x64_sys_socketpair+0x97/0x100 net/socket.c:1776
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f6cd5da248a
Code: 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 49 89 ca b8 35 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fffb9919148 EFLAGS: 00000246 ORIG_RAX: 0000000000000035
RAX: ffffffffffffffda RBX: 0000000000045e4d RCX: 00007f6cd5da248a
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001
RBP: 0000000000000000 R08: 0000000000000000 R09: 00007fffb9918bc0
R10: 00007fffb9919158 R11: 0000000000000246 R12: 00007fffb9919154
R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000
 </TASK>
INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.526 msecs