[ 29.690760][ T253] ip (253) used greatest stack depth: 24320 bytes left [ 184.986396][ C3] BUG: spinlock bad magic on CPU#3, kworker/u16:0/11 [ 184.986687][ C3] lock: noop_qdisc+0x240/0x300, .magic: 00000000, .owner: kworker/u16:0/11, .owner_cpu: 3 [ 184.986951][ C3] CPU: 3 UID: 0 PID: 11 Comm: kworker/u16:0 Not tainted 6.10.0-virtme #1 [ 184.987151][ C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 184.987446][ C3] Workqueue: netns cleanup_net [ 184.987585][ C3] Call Trace: [ 184.987686][ C3] [ 184.987758][ C3] dump_stack_lvl+0xb0/0xd0 [ 184.987899][ C3] do_raw_spin_unlock+0x1ac/0x220 [ 184.988034][ C3] _raw_spin_unlock+0x23/0x40 [ 184.988169][ C3] net_tx_action+0x402/0x660 [ 184.988302][ C3] handle_softirqs+0x1f9/0x5c0 [ 184.988438][ C3] ? dev_deactivate_many+0x1e2/0x8d0 [ 184.988576][ C3] do_softirq+0x4d/0xa0 [ 184.988677][ C3] [ 184.988747][ C3] [ 184.988813][ C3] __local_bh_enable_ip+0xf6/0x120 [ 184.988941][ C3] dev_deactivate_many+0x1e7/0x8d0 [ 184.989070][ C3] __dev_close_many+0x12b/0x2d0 [ 184.989199][ C3] ? __pfx___dev_close_many+0x10/0x10 [ 184.989334][ C3] dev_close_many+0x202/0x650 [ 184.989463][ C3] ? lock_acquire.part.0+0xeb/0x330 [ 184.989593][ C3] ? default_device_exit_batch+0x81/0x2d0 [ 184.989729][ C3] ? __pfx_dev_close_many+0x10/0x10 [ 184.989854][ C3] ? __mutex_trylock_common+0xfa/0x260 [ 184.989990][ C3] unregister_netdevice_many_notify+0x8e5/0x1570 [ 184.990147][ C3] ? lock_acquire+0x32/0xc0 [ 184.990278][ C3] ? trace_contention_end+0xeb/0x150 [ 184.990406][ C3] ? __mutex_lock+0x170/0xac0 [ 184.990536][ C3] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 184.990696][ C3] ? mark_lock+0x38/0x3e0 [ 184.990794][ C3] ? mutex_is_locked+0x17/0x50 [ 184.990924][ C3] ? mutex_is_locked+0x17/0x50 [ 184.991050][ C3] ? rtnl_is_locked+0x15/0x20 [ 184.991204][ C3] ? unregister_netdevice_queue+0x70/0x410 [ 184.991362][ C3] ? __pfx_unregister_netdevice_queue+0x10/0x10 [ 184.991524][ C3] default_device_exit_batch+0x234/0x2d0 [ 184.991650][ C3] ? __pfx_default_device_exit_batch+0x10/0x10 [ 184.991812][ C3] ? mutex_is_locked+0x17/0x50 [ 184.991942][ C3] ? nexthop_net_exit_batch_rtnl+0x83/0x210 [ 184.992109][ C3] cleanup_net+0x4ef/0x9d0 [ 184.992236][ C3] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 184.992365][ C3] ? __pfx_cleanup_net+0x10/0x10 [ 184.992492][ C3] ? trace_lock_acquire+0x14d/0x1f0 [ 184.992626][ C3] ? process_one_work+0xdf1/0x1670 [ 184.992754][ C3] ? lock_acquire+0x32/0xc0 [ 184.992882][ C3] ? process_one_work+0xdf1/0x1670 [ 184.993009][ C3] process_one_work+0xe3b/0x1670 [ 184.993138][ C3] ? __pfx___lock_release+0x10/0x10 [ 184.993263][ C3] ? __pfx_process_one_work+0x10/0x10 [ 184.993388][ C3] ? assign_work+0x16c/0x240 [ 184.993519][ C3] worker_thread+0x587/0xce0 [ 184.993646][ C3] ? __pfx_worker_thread+0x10/0x10 [ 184.993772][ C3] kthread+0x28a/0x350 [ 184.993868][ C3] ? __pfx_kthread+0x10/0x10 [ 184.993993][ C3] ret_from_fork+0x31/0x70 [ 184.994120][ C3] ? __pfx_kthread+0x10/0x10 [ 184.994244][ C3] ret_from_fork_asm+0x1a/0x30 [ 184.994374][ C3]