[    7.919625][  T197] sed (197) used greatest stack depth: 24360 bytes left
[   11.706663][  T287] ip (287) used greatest stack depth: 22856 bytes left
[   18.005766][   T11] 
[   18.005896][   T11] ============================================
[   18.006090][   T11] WARNING: possible recursive locking detected
[   18.006278][   T11] 6.13.0-rc5-virtme #1 Not tainted
[   18.006433][   T11] --------------------------------------------
[   18.006619][   T11] kworker/u16:0/11 is trying to acquire lock:
[   18.006804][   T11] ffffffffadbf6a70 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90
[   18.007116][   T11] 
[   18.007116][   T11] but task is already holding lock:
[   18.007331][   T11] ffffffffadbf6a70 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90
[   18.007628][   T11] 
[   18.007628][   T11] other info that might help us debug this:
[   18.007848][   T11]  Possible unsafe locking scenario:
[   18.007848][   T11] 
[   18.008065][   T11]        CPU0
[   18.008178][   T11]        ----
[   18.008288][   T11]   lock((netdev_chain).rwsem);
[   18.008441][   T11]   lock((netdev_chain).rwsem);
[   18.008594][   T11] 
[   18.008594][   T11]  *** DEADLOCK ***
[   18.008594][   T11] 
[   18.008813][   T11]  May be due to missing lock nesting notation
[   18.008813][   T11] 
[   18.009036][   T11] 5 locks held by kworker/u16:0/11:
[   18.009186][   T11]  #0: ffff8880010b5948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x7ec/0x16d0
[   18.009496][   T11]  #1: ffffc900000b7da0 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0xe0b/0x16d0
[   18.009762][   T11]  #2: ffffffffadbec4d0 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0xbc/0xba0
[   18.010032][   T11]  #3: ffffffffadc07e88 (rtnl_mutex){+.+.}-{4:4}, at: default_device_exit_batch+0x81/0x2e0
[   18.010329][   T11]  #4: ffffffffadbf6a70 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90
[   18.010635][   T11] 
[   18.010635][   T11] stack backtrace:
[   18.010818][   T11] CPU: 2 UID: 0 PID: 11 Comm: kworker/u16:0 Not tainted 6.13.0-rc5-virtme #1
[   18.011076][   T11] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   18.011261][   T11] Workqueue: netns cleanup_net
[   18.011418][   T11] Call Trace:
[   18.011538][   T11]  <TASK>
[   18.011617][   T11]  dump_stack_lvl+0x82/0xd0
[   18.011776][   T11]  print_deadlock_bug+0x40a/0x650
[   18.011931][   T11]  validate_chain+0x5bf/0xae0
[   18.012081][   T11]  ? __pfx_validate_chain+0x10/0x10
[   18.012234][   T11]  ? hlock_class+0x4e/0x130
[   18.012386][   T11]  ? mark_lock+0x38/0x3e0
[   18.012506][   T11]  __lock_acquire+0xb9a/0x1680
[   18.012661][   T11]  lock_acquire.part.0+0xeb/0x330
[   18.012811][   T11]  ? blocking_notifier_call_chain+0x50/0x90
[   18.013005][   T11]  ? __lock_acquire+0xb9a/0x1680
[   18.013158][   T11]  ? __pfx_lock_acquire.part.0+0x10/0x10
[   18.013312][   T11]  ? trace_lock_acquire+0x14c/0x1f0
[   18.013462][   T11]  ? lock_acquire+0x32/0xc0
[   18.013617][   T11]  ? blocking_notifier_call_chain+0x50/0x90
[   18.013804][   T11]  down_read+0x9f/0x340
[   18.013920][   T11]  ? blocking_notifier_call_chain+0x50/0x90
[   18.014108][   T11]  ? __pfx_down_read+0x10/0x10
[   18.014262][   T11]  ? __lock_release+0x103/0x460
[   18.014418][   T11]  blocking_notifier_call_chain+0x50/0x90
[   18.014571][   T11]  __netdev_upper_dev_unlink+0xd9/0x220
[   18.014725][   T11]  ? mark_held_locks+0x9e/0xe0
[   18.014882][   T11]  ? __pfx___netdev_upper_dev_unlink+0x10/0x10
[   18.015071][   T11]  ? lockdep_hardirqs_on_prepare+0x275/0x410
[   18.015262][   T11]  ? __try_to_del_timer_sync+0xe7/0x140
[   18.015421][   T11]  ? __pfx___try_to_del_timer_sync+0x10/0x10
[   18.015609][   T11]  ? mark_held_locks+0x9e/0xe0
[   18.015764][   T11]  netdev_upper_dev_unlink+0x71/0xa0
[   18.015923][   T11]  ? __pfx_netdev_upper_dev_unlink+0x10/0x10
[   18.016119][   T11]  ? mutex_is_locked+0x1c/0x60
[   18.016273][   T11]  ? rtnl_is_locked+0x15/0x20
[   18.016428][   T11]  ? netdev_master_upper_dev_get+0x13/0x120
[   18.016617][   T11]  vrf_device_event+0x78/0xe0
[   18.016775][   T11]  notifier_call_chain+0xcd/0x150
[   18.016936][   T11]  blocking_notifier_call_chain+0x66/0x90
[   18.017094][   T11]  unregister_netdevice_many_notify+0xa83/0x1580
[   18.017297][   T11]  ? __pfx_unregister_netdevice_many_notify+0x10/0x10
[   18.017497][   T11]  ? default_device_exit_batch+0x81/0x2e0
[   18.017650][   T11]  ? rtnl_is_locked+0x15/0x20
[   18.017802][   T11]  ? unregister_netdevice_queue+0x70/0x410
[   18.017988][   T11]  ? __pfx_unregister_netdevice_queue+0x10/0x10
[   18.018174][   T11]  ? __pfx_unregister_netdevice_queue+0x10/0x10
[   18.018359][   T11]  default_device_exit_batch+0x241/0x2e0
[   18.018513][   T11]  ? __pfx_default_device_exit_batch+0x10/0x10
[   18.018696][   T11]  ? ops_exit_list+0xb4/0x170
[   18.018845][   T11]  cleanup_net+0x4ef/0xba0
[   18.018992][   T11]  ? __pfx_lock_acquire.part.0+0x10/0x10
[   18.019147][   T11]  ? __pfx_cleanup_net+0x10/0x10
[   18.019299][   T11]  ? trace_lock_acquire+0x14c/0x1f0
[   18.019452][   T11]  ? lock_acquire+0x32/0xc0
[   18.019611][   T11]  ? process_one_work+0xe0b/0x16d0
[   18.019769][   T11]  process_one_work+0xe55/0x16d0
[   18.019926][   T11]  ? __pfx___lock_release+0x10/0x10
[   18.020073][   T11]  ? __pfx_process_one_work+0x10/0x10
[   18.020223][   T11]  ? assign_work+0x16c/0x240
[   18.020381][   T11]  worker_thread+0x58c/0xce0
[   18.020528][   T11]  ? __pfx_worker_thread+0x10/0x10
[   18.020678][   T11]  kthread+0x28a/0x350
[   18.020794][   T11]  ? __pfx_kthread+0x10/0x10
[   18.020941][   T11]  ret_from_fork+0x31/0x70
[   18.021108][   T11]  ? __pfx_kthread+0x10/0x10
[   18.021258][   T11]  ret_from_fork_asm+0x1a/0x30
[   18.021413][   T11]  </TASK>