[ 26.333506][ T247] ip (247) used greatest stack depth: 23552 bytes left [ 30.969754][ C0] BUG: spinlock bad magic on CPU#0, kworker/u16:0/11 [ 30.969986][ C0] lock: noop_qdisc+0x240/0x300, .magic: 00000000, .owner: kworker/u16:0/11, .owner_cpu: 0 [ 30.970288][ C0] CPU: 0 UID: 0 PID: 11 Comm: kworker/u16:0 Not tainted 6.10.0-virtme #1 [ 30.970512][ C0] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 30.970833][ C0] Workqueue: netns cleanup_net [ 30.970991][ C0] Call Trace: [ 30.971110][ C0] [ 30.971189][ C0] dump_stack_lvl+0xb0/0xd0 [ 30.971342][ C0] do_raw_spin_unlock+0x1ac/0x220 [ 30.971490][ C0] _raw_spin_unlock+0x23/0x40 [ 30.971637][ C0] net_tx_action+0x424/0x680 [ 30.971787][ C0] handle_softirqs+0x1f9/0x5c0 [ 30.971935][ C0] ? dev_deactivate_many+0x1e2/0x8d0 [ 30.972086][ C0] do_softirq+0x4d/0xa0 [ 30.972195][ C0] [ 30.972273][ C0] [ 30.972344][ C0] __local_bh_enable_ip+0xf6/0x120 [ 30.972488][ C0] dev_deactivate_many+0x1e7/0x8d0 [ 30.972636][ C0] __dev_close_many+0x12b/0x2d0 [ 30.972777][ C0] ? __pfx___dev_close_many+0x10/0x10 [ 30.972929][ C0] ? __lock_acquire+0xa70/0x1560 [ 30.973074][ C0] dev_close_many+0x202/0x650 [ 30.973217][ C0] ? lock_acquire.part.0+0xeb/0x330 [ 30.973362][ C0] ? default_device_exit_batch+0x81/0x2d0 [ 30.973515][ C0] ? __pfx_dev_close_many+0x10/0x10 [ 30.973657][ C0] ? fou_exit_net+0x2f/0xf0 [ 30.973803][ C0] ? __mutex_trylock_common+0xfa/0x260 [ 30.973951][ C0] unregister_netdevice_many_notify+0x8e5/0x1570 [ 30.974140][ C0] ? lock_acquire+0x32/0xc0 [ 30.974285][ C0] ? trace_contention_end+0xeb/0x150 [ 30.974430][ C0] ? __mutex_lock+0x170/0xac0 [ 30.974576][ C0] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 30.974752][ C0] ? __mutex_lock+0x170/0xac0 [ 30.974894][ C0] ? find_held_lock+0x2c/0x110 [ 30.975083][ C0] ? mutex_is_locked+0x17/0x50 [ 30.975298][ C0] ? rtnl_is_locked+0x15/0x20 [ 30.975490][ C0] ? unregister_netdevice_queue+0x70/0x410 [ 30.975670][ C0] ? __pfx_unregister_netdevice_queue+0x10/0x10 [ 30.975844][ C0] ? __pfx_unregister_netdevice_queue+0x10/0x10 [ 30.976029][ C0] default_device_exit_batch+0x234/0x2d0 [ 30.976173][ C0] ? __pfx_default_device_exit_batch+0x10/0x10 [ 30.976350][ C0] ? ops_exit_list+0xb4/0x170 [ 30.976492][ C0] cleanup_net+0x4ef/0xb10 [ 30.976632][ C0] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 30.976775][ C0] ? __pfx_cleanup_net+0x10/0x10 [ 30.976913][ C0] ? trace_lock_acquire+0x14d/0x1f0 [ 30.977064][ C0] ? process_one_work+0xdf1/0x1670 [ 30.977204][ C0] ? lock_acquire+0x32/0xc0 [ 30.977351][ C0] ? process_one_work+0xdf1/0x1670 [ 30.977495][ C0] process_one_work+0xe3b/0x1670 [ 30.977637][ C0] ? __pfx___lock_release+0x10/0x10 [ 30.977778][ C0] ? __pfx_process_one_work+0x10/0x10 [ 30.977923][ C0] ? assign_work+0x16c/0x240 [ 30.978075][ C0] worker_thread+0x587/0xce0 [ 30.978218][ C0] ? __pfx_worker_thread+0x10/0x10 [ 30.978361][ C0] kthread+0x28a/0x350 [ 30.978468][ C0] ? __pfx_kthread+0x10/0x10 [ 30.978615][ C0] ret_from_fork+0x31/0x70 [ 30.978760][ C0] ? __pfx_kthread+0x10/0x10 [ 30.978901][ C0] ret_from_fork_asm+0x1a/0x30 [ 30.979052][ C0]