INFO: task kworker/1:7:5263 blocked for more than 143 seconds.
      Not tainted 6.8.0-rc4-next-20240214-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:7     state:D stack:19984 pid:5263  tgid:5263  ppid:2      flags:0x00004000
Workqueue: usb_hub_wq hub_event
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5400 [inline]
 __schedule+0x17df/0x4a40 kernel/sched/core.c:6727
 __schedule_loop kernel/sched/core.c:6804 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6819
 usb_kill_urb+0x1c9/0x300 drivers/usb/core/urb.c:713
 usb_start_wait_urb+0x1b0/0x520 drivers/usb/core/message.c:65
 usb_internal_control_msg drivers/usb/core/message.c:103 [inline]
 usb_control_msg+0x2b1/0x4c0 drivers/usb/core/message.c:154
 get_bMaxPacketSize0 drivers/usb/core/hub.c:4797 [inline]
 hub_port_init+0xc21/0x2620 drivers/usb/core/hub.c:4993
 hub_port_connect drivers/usb/core/hub.c:5441 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5652 [inline]
 port_event drivers/usb/core/hub.c:5812 [inline]
 hub_event+0x295f/0x5150 drivers/usb/core/hub.c:5894
 process_one_work kernel/workqueue.c:3146 [inline]
 process_scheduled_works+0x9d7/0x1730 kernel/workqueue.c:3226
 worker_thread+0x86d/0xd70 kernel/workqueue.c:3307
 kthread+0x2f0/0x390 kernel/kthread.c:388
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:242
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/29:
 #0: ffffffff8e1315a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline]
 #0: ffffffff8e1315a0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline]
 #0: ffffffff8e1315a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
2 locks held by getty/4820:
 #0: ffff88802ad5e0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
 #1: ffffc900031332f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2201
5 locks held by kworker/1:7/5263:
 #0: ffff8880153ac548 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3121 [inline]
 #0: ffff8880153ac548 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_scheduled_works+0x8e1/0x1730 kernel/workqueue.c:3226
 #1: ffffc9000437fd00 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3121 [inline]
 #1: ffffc9000437fd00 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_scheduled_works+0x8e1/0x1730 kernel/workqueue.c:3226
 #2: ffff88802410d190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline]
 #2: ffff88802410d190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1fe/0x5150 drivers/usb/core/hub.c:5840
 #3: ffff88802418b510 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3198 [inline]
 #3: ffff88802418b510 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5409 [inline]
 #3: ffff88802418b510 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5652 [inline]
 #3: ffff88802418b510 (&port_dev->status_lock){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5812 [inline]
 #3: ffff88802418b510 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_event+0x25b6/0x5150 drivers/usb/core/hub.c:5894
 #4: ffff888024056968 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5410 [inline]
 #4: ffff888024056968 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5652 [inline]
 #4: ffff888024056968 (hcd->address0_mutex){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5812 [inline]
 #4: ffff888024056968 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_event+0x25f4/0x5150 drivers/usb/core/hub.c:5894
2 locks held by kworker/0:6/22791:
1 lock held by syz-executor.3/25310:
 #0: ffffc900031950a8 (&kvm->slots_lock){+.+.}-{3:3}, at: kvm_set_memory_region arch/x86/kvm/../../../virt/kvm/kvm_main.c:2145 [inline]
 #0: ffffc900031950a8 (&kvm->slots_lock){+.+.}-{3:3}, at: kvm_vm_ioctl_set_memory_region+0x62/0xa0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2158
1 lock held by syz-executor.3/25311:
 #0: ffffc900031950a8 (&kvm->slots_lock){+.+.}-{3:3}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:559
1 lock held by syz-executor.3/25330:
1 lock held by syz-executor.2/25314:
3 locks held by syz-executor.4/25325:
6 locks held by syz-executor.0/25332:

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

NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.8.0-rc4-next-20240214-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114
 nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
 watchdog+0xfb0/0xff0 kernel/hung_task.c:380
 kthread+0x2f0/0x390 kernel/kthread.c:388
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:242
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 5114 Comm: syz-executor.4 Not tainted 6.8.0-rc4-next-20240214-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
RIP: 0010:__lock_acquire+0x2b4/0x1fd0
Code: 83 3d 7f 55 15 0e 00 75 19 90 48 c7 c7 80 b7 aa 8b 48 c7 c6 80 df aa 8b e8 39 34 e6 ff 90 0f 0b 90 90 90 31 c9 e9 1c 11 00 00 <48> 89 bc 24 88 00 00 00 48 8b 44 24 50 4c 8d 80 d8 0a 00 00 83 fa
RSP: 0018:ffffc900039af710 EFLAGS: 00000046
RAX: ffffffff929a93a0 RBX: 00000000000005f5 RCX: ffffffff944bb603
RDX: 0000000000000000 RSI: dffffc0000000000 RDI: 000000000000003d
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001
R10: dffffc0000000000 R11: fffffbfff1f0d496 R12: ffff8880b943d198
R13: 000000000000003d R14: ffff8880283dbc00 R15: 0000000000000000
FS:  0000555557293480(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b3212a000 CR3: 000000002dbce000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 00000000000000d8 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 lock_acquire+0x1e4/0x530 kernel/locking/lockdep.c:5754
 _raw_spin_lock_nested+0x31/0x40 kernel/locking/spinlock.c:378
 raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:559
 raw_spin_rq_lock kernel/sched/sched.h:1385 [inline]
 rq_lock kernel/sched/sched.h:1699 [inline]
 __schedule+0x357/0x4a40 kernel/sched/core.c:6643
 __schedule_loop kernel/sched/core.c:6804 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6819
 do_nanosleep+0x197/0x600 kernel/time/hrtimer.c:2048
 hrtimer_nanosleep+0x227/0x470 kernel/time/hrtimer.c:2101
 __do_sys_clock_nanosleep kernel/time/posix-timers.c:1396 [inline]
 __se_sys_clock_nanosleep+0x32b/0x3c0 kernel/time/posix-timers.c:1373
 do_syscall_64+0xfb/0x240
 entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7f1b910a91b5
Code: 24 0c 89 3c 24 48 89 4c 24 18 e8 f6 b9 ff ff 4c 8b 54 24 18 48 8b 54 24 10 41 89 c0 8b 74 24 0c 8b 3c 24 b8 e6 00 00 00 0f 05 <44> 89 c7 48 89 04 24 e8 4f ba ff ff 48 8b 04 24 48 83 c4 28 f7 d8
RSP: 002b:00007fffcc1feee0 EFLAGS: 00000293 ORIG_RAX: 00000000000000e6
RAX: ffffffffffffffda RBX: 0000000000003536 RCX: 00007f1b910a91b5
RDX: 00007fffcc1fef20 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007fffcc1fefac R08: 0000000000000000 R09: 00007fffcc2c60b0
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000032
R13: 00000000002b4d52 R14: 00000000002b4cf5 R15: 0000000000000003
 </TASK>