INFO: task kworker/0:7:16965 blocked for more than 140 seconds.
      Not tainted 4.19.211-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
kworker/0:7     D27096 16965      2 0x80000000
Workqueue: usb_hub_wq hub_event
Call Trace:
 context_switch kernel/sched/core.c:2828 [inline]
 __schedule+0x887/0x2040 kernel/sched/core.c:3517
 schedule+0x8d/0x1b0 kernel/sched/core.c:3561
 usb_kill_urb.part.0+0x197/0x220 drivers/usb/core/urb.c:697
 usb_kill_urb+0x7c/0x90 drivers/usb/core/urb.c:692
 usb_start_wait_urb+0x252/0x4c0 drivers/usb/core/message.c:63
 usb_internal_control_msg drivers/usb/core/message.c:101 [inline]
 usb_control_msg+0x31c/0x4a0 drivers/usb/core/message.c:152
 hub_port_init+0x12dc/0x3120 drivers/usb/core/hub.c:4704
 hub_port_connect drivers/usb/core/hub.c:5070 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5253 [inline]
 port_event drivers/usb/core/hub.c:5361 [inline]
 hub_event+0x1ccd/0x44a0 drivers/usb/core/hub.c:5441
 process_one_work+0x864/0x1570 kernel/workqueue.c:2153
 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296
 kthread+0x33f/0x460 kernel/kthread.c:259
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415

Showing all locks held in the system:
1 lock held by khungtaskd/1570:
 #0: 0000000068df9a51 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441
1 lock held by in:imklog/7823:
 #0: 00000000e05923ac (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767
3 locks held by kworker/u4:1/8572:
5 locks held by kworker/0:7/16965:
 #0: 00000000ba05f1cc ((wq_completion)"usb_hub_wq"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124
 #1: 0000000009274d01 ((work_completion)(&hub->events)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128
 #2: 000000002376c276 (&dev->mutex){....}, at: device_lock include/linux/device.h:1174 [inline]
 #2: 000000002376c276 (&dev->mutex){....}, at: hub_event+0x11e/0x44a0 drivers/usb/core/hub.c:5387
 #3: 00000000cdcc3eb0 (&port_dev->status_lock){+.+.}, at: usb_lock_port drivers/usb/core/hub.c:2983 [inline]
 #3: 00000000cdcc3eb0 (&port_dev->status_lock){+.+.}, at: hub_port_connect drivers/usb/core/hub.c:5069 [inline]
 #3: 00000000cdcc3eb0 (&port_dev->status_lock){+.+.}, at: hub_port_connect_change drivers/usb/core/hub.c:5253 [inline]
 #3: 00000000cdcc3eb0 (&port_dev->status_lock){+.+.}, at: port_event drivers/usb/core/hub.c:5361 [inline]
 #3: 00000000cdcc3eb0 (&port_dev->status_lock){+.+.}, at: hub_event+0x1cb8/0x44a0 drivers/usb/core/hub.c:5441
 #4: 00000000bb29fe1e (hcd->address0_mutex){+.+.}, at: hub_port_init+0x1b9/0x3120 drivers/usb/core/hub.c:4578
1 lock held by syz-executor.0/14573:
1 lock held by systemd-udevd/14583:

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

NMI backtrace for cpu 1
CPU: 1 PID: 1570 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
 nmi_cpu_backtrace.cold+0x63/0xa2 lib/nmi_backtrace.c:101
 nmi_trigger_cpumask_backtrace+0x1a6/0x1f0 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline]
 watchdog+0x991/0xe60 kernel/hung_task.c:287
 kthread+0x33f/0x460 kernel/kthread.c:259
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 8572 Comm: kworker/u4:1 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
Workqueue: bat_events batadv_nc_worker
RIP: 0010:__lock_acquire+0x3c/0x3ff0 kernel/locking/lockdep.c:3275
Code: 89 cd 53 89 d3 48 ba 00 00 00 00 00 fc ff df 48 81 ec 98 01 00 00 48 8b 84 24 d0 01 00 00 48 c7 84 24 98 00 00 00 b3 8a b5 41 <48> c7 84 24 a0 00 00 00 78 29 b7 89 48 c7 84 24 a8 00 00 00 e0 f7
RSP: 0018:ffff8880974dfa68 EFLAGS: 00000092
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000002
RDX: dffffc0000000000 RSI: 0000000000000000 RDI: ffffffff89f85fa0
RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000004 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: ffffffff89f85fa0 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c033f9e0e0 CR3: 000000003c457000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 lock_acquire+0x170/0x3c0 kernel/locking/lockdep.c:3908
 rcu_lock_acquire include/linux/rcupdate.h:242 [inline]
 rcu_read_lock include/linux/rcupdate.h:627 [inline]
 batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:419 [inline]
 batadv_nc_worker+0x12d/0xd50 net/batman-adv/network-coding.c:730
 process_one_work+0x864/0x1570 kernel/workqueue.c:2153
 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296
 kthread+0x33f/0x460 kernel/kthread.c:259
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415