[   27.044349][  T260] ip (260) used greatest stack depth: 24064 bytes left
[   38.954747][    C0] BUG: spinlock bad magic on CPU#0, kworker/u16:0/11
[   38.954959][    C0]  lock: noop_qdisc+0x240/0x300, .magic: 00000000, .owner: kworker/u16:0/11, .owner_cpu: 0
[   38.955253][    C0] CPU: 0 UID: 0 PID: 11 Comm: kworker/u16:0 Not tainted 6.10.0-virtme #1
[   38.955463][    C0] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   38.955775][    C0] Workqueue: netns cleanup_net
[   38.955929][    C0] Call Trace:
[   38.956042][    C0]  <IRQ>
[   38.956115][    C0]  dump_stack_lvl+0xb0/0xd0
[   38.956263][    C0]  do_raw_spin_unlock+0x1ac/0x220
[   38.956406][    C0]  _raw_spin_unlock+0x23/0x40
[   38.956547][    C0]  net_tx_action+0x402/0x660
[   38.956689][    C0]  handle_softirqs+0x1f9/0x5c0
[   38.956830][    C0]  ? dev_deactivate_many+0x1e2/0x8d0
[   38.956972][    C0]  do_softirq+0x4d/0xa0
[   38.957081][    C0]  </IRQ>
[   38.957152][    C0]  <TASK>
[   38.957221][    C0]  __local_bh_enable_ip+0xf6/0x120
[   38.957361][    C0]  dev_deactivate_many+0x1e7/0x8d0
[   38.957500][    C0]  __dev_close_many+0x12b/0x2d0
[   38.957640][    C0]  ? __pfx___dev_close_many+0x10/0x10
[   38.957784][    C0]  dev_close_many+0x202/0x650
[   38.957923][    C0]  ? lock_acquire.part.0+0xeb/0x330
[   38.958061][    C0]  ? default_device_exit_batch+0x81/0x2d0
[   38.958206][    C0]  ? __pfx_dev_close_many+0x10/0x10
[   38.958343][    C0]  ? __mutex_trylock_common+0xfa/0x260
[   38.958489][    C0]  unregister_netdevice_many_notify+0x8e5/0x1570
[   38.958663][    C0]  ? lock_acquire+0x32/0xc0
[   38.958799][    C0]  ? trace_contention_end+0xeb/0x150
[   38.958941][    C0]  ? __mutex_lock+0x170/0xac0
[   38.959080][    C0]  ? __pfx_unregister_netdevice_many_notify+0x10/0x10
[   38.959262][    C0]  ? mark_lock+0x38/0x3e0
[   38.959369][    C0]  ? mutex_is_locked+0x17/0x50
[   38.959516][    C0]  ? rtnl_is_locked+0x15/0x20
[   38.959663][    C0]  ? unregister_netdevice_queue+0x70/0x410
[   38.959841][    C0]  ? __pfx_unregister_netdevice_queue+0x10/0x10
[   38.960015][    C0]  ? __pfx_unregister_netdevice_queue+0x10/0x10
[   38.960196][    C0]  default_device_exit_batch+0x234/0x2d0
[   38.960340][    C0]  ? __pfx_default_device_exit_batch+0x10/0x10
[   38.960516][    C0]  ? mutex_is_locked+0x17/0x50
[   38.960658][    C0]  ? nexthop_net_exit_batch_rtnl+0x83/0x210
[   38.960836][    C0]  cleanup_net+0x4ef/0x9d0
[   38.960979][    C0]  ? __pfx_lock_acquire.part.0+0x10/0x10
[   38.961127][    C0]  ? __pfx_cleanup_net+0x10/0x10
[   38.961274][    C0]  ? trace_lock_acquire+0x14d/0x1f0
[   38.961415][    C0]  ? process_one_work+0xdf1/0x1670
[   38.961559][    C0]  ? lock_acquire+0x32/0xc0
[   38.961701][    C0]  ? process_one_work+0xdf1/0x1670
[   38.961843][    C0]  process_one_work+0xe3b/0x1670
[   38.961996][    C0]  ? __pfx___lock_release+0x10/0x10
[   38.962137][    C0]  ? __pfx_process_one_work+0x10/0x10
[   38.962281][    C0]  ? assign_work+0x16c/0x240
[   38.962424][    C0]  worker_thread+0x587/0xce0
[   38.962563][    C0]  ? __pfx_worker_thread+0x10/0x10
[   38.962704][    C0]  kthread+0x28a/0x350
[   38.962808][    C0]  ? __pfx_kthread+0x10/0x10
[   38.962951][    C0]  ret_from_fork+0x31/0x70
[   38.963102][    C0]  ? __pfx_kthread+0x10/0x10
[   38.963247][    C0]  ret_from_fork_asm+0x1a/0x30
[   38.963393][    C0]  </TASK>
[  310.592639][ T2378] netem: version 1.3