INFO: task kworker/0:5:26305 blocked for more than 143 seconds.
      Not tainted 6.3.0-rc4-syzkaller-00039-gffe78bbd5121 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:5     state:D stack:22688 pid:26305 ppid:2      flags:0x00004000
Workqueue: usb_hub_wq hub_event
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5307 [inline]
 __schedule+0xc91/0x5770 kernel/sched/core.c:6625
 schedule+0xde/0x1a0 kernel/sched/core.c:6701
 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6760
 __mutex_lock_common kernel/locking/mutex.c:679 [inline]
 __mutex_lock+0xa3b/0x1350 kernel/locking/mutex.c:747
 add_early_randomness+0x1a/0x1d0 drivers/char/hw_random/core.c:69
 hwrng_register+0x457/0x530 drivers/char/hw_random/core.c:584
 chaoskey_probe+0x77b/0xc20 drivers/usb/misc/chaoskey.c:204
 usb_probe_interface+0x30f/0x960 drivers/usb/core/driver.c:396
 call_driver_probe drivers/base/dd.c:552 [inline]
 really_probe+0x240/0xca0 drivers/base/dd.c:631
 __driver_probe_device+0x1df/0x4d0 drivers/base/dd.c:768
 driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:798
 __device_attach_driver+0x1d4/0x2e0 drivers/base/dd.c:926
 bus_for_each_drv+0x149/0x1d0 drivers/base/bus.c:457
 __device_attach+0x1e4/0x4b0 drivers/base/dd.c:998
 bus_probe_device+0x17c/0x1c0 drivers/base/bus.c:532
 device_add+0x11c4/0x1c50 drivers/base/core.c:3589
 usb_set_configuration+0x10ee/0x1af0 drivers/usb/core/message.c:2171
 usb_generic_driver_probe+0xcf/0x130 drivers/usb/core/generic.c:238
 usb_probe_device+0xd8/0x2c0 drivers/usb/core/driver.c:293
 call_driver_probe drivers/base/dd.c:552 [inline]
 really_probe+0x240/0xca0 drivers/base/dd.c:631
 __driver_probe_device+0x1df/0x4d0 drivers/base/dd.c:768
 driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:798
 __device_attach_driver+0x1d4/0x2e0 drivers/base/dd.c:926
 bus_for_each_drv+0x149/0x1d0 drivers/base/bus.c:457
 __device_attach+0x1e4/0x4b0 drivers/base/dd.c:998
 bus_probe_device+0x17c/0x1c0 drivers/base/bus.c:532
 device_add+0x11c4/0x1c50 drivers/base/core.c:3589
 usb_new_device+0xcb2/0x19d0 drivers/usb/core/hub.c:2575
 hub_port_connect drivers/usb/core/hub.c:5407 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5551 [inline]
 port_event drivers/usb/core/hub.c:5711 [inline]
 hub_event+0x2d9e/0x4e40 drivers/usb/core/hub.c:5793
 process_one_work+0x991/0x15c0 kernel/workqueue.c:2390
 worker_thread+0x669/0x1090 kernel/workqueue.c:2537
 kthread+0x2e8/0x3a0 kernel/kthread.c:376
 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/12:
 #0: ffffffff8c794a70 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:510
1 lock held by rcu_tasks_trace/13:
 #0: ffffffff8c794770 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:510
1 lock held by khungtaskd/28:
 #0: ffffffff8c7955c0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x340 kernel/locking/lockdep.c:6495
1 lock held by hwrng/730:
 #0: ffffffff8d269328 (reading_mutex){+.+.}-{3:3}, at: hwrng_fillfn+0x141/0x3e0 drivers/char/hw_random/core.c:505
2 locks held by getty/4765:
 #0: ffff88814a03d098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x26/0x80 drivers/tty/tty_ldisc.c:244
 #1: ffffc900015a02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xef4/0x13e0 drivers/tty/n_tty.c:2177
3 locks held by kworker/u4:7/5382:
6 locks held by kworker/0:5/26305:
 #0: ffff88801729e138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff88801729e138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff88801729e138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff88801729e138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:639 [inline]
 #0: ffff88801729e138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:666 [inline]
 #0: ffff88801729e138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x87a/0x15c0 kernel/workqueue.c:2361
 #1: ffffc9001560fda8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x15c0 kernel/workqueue.c:2365
 #2: ffff888021b0d190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:832 [inline]
 #2: ffff888021b0d190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c0/0x4e40 drivers/usb/core/hub.c:5739
 #3: ffff888099ba8190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:832 [inline]
 #3: ffff888099ba8190 (&dev->mutex){....}-{3:3}, at: __device_attach+0x76/0x4b0 drivers/base/dd.c:973
 #4: ffff888099bae118 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:832 [inline]
 #4: ffff888099bae118 (&dev->mutex){....}-{3:3}, at: __device_attach+0x76/0x4b0 drivers/base/dd.c:973
 #5: ffffffff8d269328 (reading_mutex){+.+.}-{3:3}, at: add_early_randomness+0x1a/0x1d0 drivers/char/hw_random/core.c:69

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

NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.3.0-rc4-syzkaller-00039-gffe78bbd5121 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
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+0x2e8/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 5382 Comm: kworker/u4:7 Not tainted 6.3.0-rc4-syzkaller-00039-gffe78bbd5121 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
Workqueue: bat_events batadv_nc_worker
RIP: 0010:lockdep_recursion_inc kernel/locking/lockdep.c:462 [inline]
RIP: 0010:lock_release+0x151/0x670 kernel/locking/lockdep.c:5688
Code: 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 c0 04 00 00 41 8b be 34 0a 00 00 85 ff 0f 85 9e 02 00 00 9c 8f 04 24 fa <48> c7 c7 c0 5b 4c 8a e8 a3 74 9d 08 48 89 da 83 e3 07 48 b8 00 00
RSP: 0018:ffffc9000564fbc0 EFLAGS: 00000046
RAX: 0000000000000007 RBX: ffffffff8e780670 RCX: ffffffff8164a675
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 1ffff92000ac9f7a R08: 0000000000000001 R09: ffffffff8e77d157
R10: fffffbfff1cefa2a R11: 0000000000000000 R12: ffffffff8c7955c0
R13: 0000000000000000 R14: ffff888077958000 R15: 0000000000000072
FS:  0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f30ab6d5720 CR3: 00000000455f2000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 000000000000003b DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 rcu_lock_release include/linux/rcupdate.h:332 [inline]
 rcu_read_unlock include/linux/rcupdate.h:806 [inline]
 batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:412 [inline]
 batadv_nc_worker+0x86c/0xfe0 net/batman-adv/network-coding.c:719
 process_one_work+0x991/0x15c0 kernel/workqueue.c:2390
 worker_thread+0x669/0x1090 kernel/workqueue.c:2537
 kthread+0x2e8/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>