INFO: task kworker/1:11:5184 blocked for more than 143 seconds.
      Not tainted 6.0.0-rc3-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:11    state:D stack:23296 pid: 5184 ppid:     2 flags:0x00004000
Workqueue: usb_hub_wq hub_event
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5182 [inline]
 __schedule+0xadf/0x52b0 kernel/sched/core.c:6494
 schedule+0xda/0x1b0 kernel/sched/core.c:6570
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6629
 __mutex_lock_common kernel/locking/mutex.c:679 [inline]
 __mutex_lock+0xa44/0x1350 kernel/locking/mutex.c:747
 add_early_randomness+0x1a/0x170 drivers/char/hw_random/core.c:69
 hwrng_register+0x399/0x510 drivers/char/hw_random/core.c:599
 chaoskey_probe+0x7e8/0xc30 drivers/usb/misc/chaoskey.c:205
 usb_probe_interface+0x30b/0x7f0 drivers/usb/core/driver.c:396
 call_driver_probe drivers/base/dd.c:530 [inline]
 really_probe+0x249/0xb90 drivers/base/dd.c:609
 __driver_probe_device+0x1df/0x4d0 drivers/base/dd.c:748
 driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:778
 __device_attach_driver+0x206/0x2e0 drivers/base/dd.c:901
 bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:427
 __device_attach+0x1e4/0x530 drivers/base/dd.c:973
 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:487
 device_add+0xbd5/0x1e90 drivers/base/core.c:3517
 usb_set_configuration+0x1019/0x1900 drivers/usb/core/message.c:2170
 usb_generic_driver_probe+0xba/0x100 drivers/usb/core/generic.c:238
 usb_probe_device+0xd4/0x2c0 drivers/usb/core/driver.c:293
 call_driver_probe drivers/base/dd.c:530 [inline]
 really_probe+0x249/0xb90 drivers/base/dd.c:609
 __driver_probe_device+0x1df/0x4d0 drivers/base/dd.c:748
 driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:778
 __device_attach_driver+0x206/0x2e0 drivers/base/dd.c:901
 bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:427
 __device_attach+0x1e4/0x530 drivers/base/dd.c:973
 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:487
 device_add+0xbd5/0x1e90 drivers/base/core.c:3517
 usb_new_device.cold+0x685/0x10ad drivers/usb/core/hub.c:2573
 hub_port_connect drivers/usb/core/hub.c:5353 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5497 [inline]
 port_event drivers/usb/core/hub.c:5653 [inline]
 hub_event+0x26c7/0x4610 drivers/usb/core/hub.c:5735
 process_one_work+0x991/0x1610 kernel/workqueue.c:2289
 worker_thread+0x665/0x1080 kernel/workqueue.c:2436
 kthread+0x2e4/0x3a0 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 kworker/0:1H/9:
 #0: ffff8880b9a39f98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:552 [inline]
 #0: ffff8880b9a39f98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x8c/0x120 kernel/sched/core.c:537
1 lock held by rcu_tasks_kthre/12:
 #0: ffffffff8bf88830 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:507
1 lock held by rcu_tasks_trace/13:
 #0: ffffffff8bf88530 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:507
1 lock held by khungtaskd/28:
 #0: ffffffff8bf89380 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6492
1 lock held by hwrng/750:
 #0: ffffffff8ca48868 (reading_mutex){+.+.}-{3:3}, at: hwrng_fillfn+0x141/0x370 drivers/char/hw_random/core.c:503
2 locks held by getty/3284:
 #0: ffff8880263d3098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244
 #1: ffffc90002d232f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xef0/0x13e0 drivers/tty/n_tty.c:2177
3 locks held by udevd/3648:
 #0: ffff888077d69c88 (&of->mutex){+.+.}-{3:3}, at: kernfs_file_read_iter fs/kernfs/file.c:253 [inline]
 #0: ffff888077d69c88 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_read_iter+0x189/0x710 fs/kernfs/file.c:300
 #1: ffff8880259342c0 (kn->active#86){++++}-{0:0}, at: kernfs_file_read_iter fs/kernfs/file.c:254 [inline]
 #1: ffff8880259342c0 (kn->active#86){++++}-{0:0}, at: kernfs_fop_read_iter+0x1ac/0x710 fs/kernfs/file.c:300
 #2: ffff8880798ac190 (&dev->mutex){....}-{3:3}, at: device_lock_interruptible include/linux/device.h:840 [inline]
 #2: ffff8880798ac190 (&dev->mutex){....}-{3:3}, at: read_descriptors+0x3c/0x2c0 drivers/usb/core/sysfs.c:873
3 locks held by udevd/3786:
 #0: ffff888021361488 (&of->mutex){+.+.}-{3:3}, at: kernfs_file_read_iter fs/kernfs/file.c:253 [inline]
 #0: ffff888021361488 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_read_iter+0x189/0x710 fs/kernfs/file.c:300
 #1: ffff88802f6a0748 (kn->active#86){++++}-{0:0}, at: kernfs_file_read_iter fs/kernfs/file.c:254 [inline]
 #1: ffff88802f6a0748 (kn->active#86){++++}-{0:0}, at: kernfs_fop_read_iter+0x1ac/0x710 fs/kernfs/file.c:300
 #2: ffff8880798a9190 (&dev->mutex){....}-{3:3}, at: device_lock_interruptible include/linux/device.h:840 [inline]
 #2: ffff8880798a9190 (&dev->mutex){....}-{3:3}, at: read_descriptors+0x3c/0x2c0 drivers/usb/core/sysfs.c:873
3 locks held by udevd/3787:
 #0: ffff888075271888 (&of->mutex){+.+.}-{3:3}, at: kernfs_file_read_iter fs/kernfs/file.c:253 [inline]
 #0: ffff888075271888 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_read_iter+0x189/0x710 fs/kernfs/file.c:300
 #1: ffff88807f536008 (kn->active#86){++++}-{0:0}, at: kernfs_file_read_iter fs/kernfs/file.c:254 [inline]
 #1: ffff88807f536008 (kn->active#86){++++}-{0:0}, at: kernfs_fop_read_iter+0x1ac/0x710 fs/kernfs/file.c:300
 #2: ffff888020c2a190 (&dev->mutex){....}-{3:3}, at: device_lock_interruptible include/linux/device.h:840 [inline]
 #2: ffff888020c2a190 (&dev->mutex){....}-{3:3}, at: read_descriptors+0x3c/0x2c0 drivers/usb/core/sysfs.c:873
6 locks held by kworker/1:11/5184:
 #0: ffff88801762d538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff88801762d538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff88801762d538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff88801762d538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff88801762d538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff88801762d538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 kernel/workqueue.c:2260
 #1: ffffc9000483fda8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264
 #2: ffff888020bf1190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline]
 #2: ffff888020bf1190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1bc/0x4610 drivers/usb/core/hub.c:5681
 #3: ffff888020c2a190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline]
 #3: ffff888020c2a190 (&dev->mutex){....}-{3:3}, at: __device_attach+0x76/0x530 drivers/base/dd.c:948
 #4: ffff888020c2d118 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline]
 #4: ffff888020c2d118 (&dev->mutex){....}-{3:3}, at: __device_attach+0x76/0x530 drivers/base/dd.c:948
 #5: ffffffff8ca48868 (reading_mutex){+.+.}-{3:3}, at: add_early_randomness+0x1a/0x170 drivers/char/hw_random/core.c:69
3 locks held by kworker/u4:7/6175:
 #0: ffff8880b9a39f98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:552 [inline]
 #0: ffff8880b9a39f98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x8c/0x120 kernel/sched/core.c:537
 #1: ffff8880b9a277c8 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x3e7/0x4e0 kernel/sched/psi.c:885
 #2: ffffffff8bf89380 (rcu_read_lock){....}-{1:2}, at: batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:406 [inline]
 #2: ffffffff8bf89380 (rcu_read_lock){....}-{1:2}, at: batadv_nc_worker+0xf3/0xfa0 net/batman-adv/network-coding.c:719
4 locks held by kworker/1:1/20835:
 #0: ffff888011865d38 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff888011865d38 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff888011865d38 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff888011865d38 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff888011865d38 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff888011865d38 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 kernel/workqueue.c:2260
 #1: ffffc90014e0fda8 ((work_completion)(&(&hub->init_work)->work)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264
 #2: ffff8880798ac190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline]
 #2: ffff8880798ac190 (&dev->mutex){....}-{3:3}, at: hub_activate+0x320/0x1ce0 drivers/usb/core/hub.c:1037
 #3: ffff8880798ab098 (&hub->status_mutex){+.+.}-{3:3}, at: hub_ext_port_status+0x58/0x450 drivers/usb/core/hub.c:597
4 locks held by kworker/1:2/23871:
 #0: ffff888011865d38 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff888011865d38 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff888011865d38 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff888011865d38 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff888011865d38 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff888011865d38 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 kernel/workqueue.c:2260
 #1: ffffc900159b7da8 ((work_completion)(&(&hub->init_work)->work)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264
 #2: ffff8880798a9190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline]
 #2: ffff8880798a9190 (&dev->mutex){....}-{3:3}, at: hub_activate+0x320/0x1ce0 drivers/usb/core/hub.c:1037
 #3: ffff8880798af098 (&hub->status_mutex){+.+.}-{3:3}, at: hub_ext_port_status+0x58/0x450 drivers/usb/core/hub.c:597
2 locks held by syz-executor.3/29880:
 #0: ffff8880b9a39f98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:552 [inline]
 #0: ffff8880b9a39f98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x8c/0x120 kernel/sched/core.c:537
 #1: ffff8880b9a277c8 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x3e7/0x4e0 kernel/sched/psi.c:885

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

NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.0.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
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+0x46/0x14f lib/nmi_backtrace.c:111
 nmi_trigger_cpumask_backtrace+0x206/0x250 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:212 [inline]
 watchdog+0xc18/0xf50 kernel/hung_task.c:369
 kthread+0x2e4/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 18584 Comm: kworker/0:2 Not tainted 6.0.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
Workqueue: events free_work
RIP: 0010:hlock_class kernel/locking/lockdep.c:222 [inline]
RIP: 0010:check_wait_context kernel/locking/lockdep.c:4728 [inline]
RIP: 0010:__lock_acquire+0x444/0x56d0 kernel/locking/lockdep.c:5003
Code: fa 48 c1 ea 03 0f b6 04 02 84 c0 74 06 0f 8e 5e 11 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b 4c 24 38 44 0f b6 b5 b8 00 00 00 <48> c1 e9 03 0f b6 04 01 84 c0 74 08 3c 03 0f 8e dd 10 00 00 41 0f
RSP: 0018:ffffc9000ae1f968 EFLAGS: 00000046
RAX: dffffc0000000000 RBX: ffff88807d69e2f8 RCX: ffff88807d69e368
RDX: 1ffffffff211c393 RSI: 0000000000000008 RDI: ffffffff908e1c98
RBP: ffffffff908e1be0 R08: 0000000000000000 R09: ffffffff908de947
R10: fffffbfff211bd28 R11: 0000000000000000 R12: ffff88807d69e348
R13: ffff88807d69d880 R14: 0000000000000002 R15: 0000000000040000
FS:  0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2ea2d000 CR3: 000000002be2a000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 lock_acquire kernel/locking/lockdep.c:5666 [inline]
 lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5631
 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
 _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154
 spin_lock include/linux/spinlock.h:349 [inline]
 free_vmap_area_noflush+0x217/0xd10 mm/vmalloc.c:1809
 free_unmap_vmap_area mm/vmalloc.c:1829 [inline]
 remove_vm_area+0x1ca/0x230 mm/vmalloc.c:2588
 vm_remove_mappings mm/vmalloc.c:2617 [inline]
 __vunmap+0x3c0/0xd30 mm/vmalloc.c:2682
 free_work+0x58/0x70 mm/vmalloc.c:97
 process_one_work+0x991/0x1610 kernel/workqueue.c:2289
 worker_thread+0x665/0x1080 kernel/workqueue.c:2436
 kthread+0x2e4/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
 </TASK>