[ 27.785336][ T230] connect_ipv6 (230) used greatest stack depth: 24288 bytes left [ 27.795693][ C1] BUG: spinlock bad magic on CPU#1, kworker/u16:1/71 [ 27.795979][ C1] lock: noop_qdisc+0x240/0x300, .magic: 00000000, .owner: kworker/u16:1/71, .owner_cpu: 1 [ 27.796280][ C1] CPU: 1 UID: 0 PID: 71 Comm: kworker/u16:1 Not tainted 6.10.0-virtme #1 [ 27.796522][ C1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 27.796862][ C1] Workqueue: netns cleanup_net [ 27.797026][ C1] Call Trace: [ 27.797141][ C1] [ 27.797214][ C1] dump_stack_lvl+0xb0/0xd0 [ 27.797362][ C1] do_raw_spin_unlock+0x1ac/0x220 [ 27.797513][ C1] _raw_spin_unlock+0x23/0x40 [ 27.797658][ C1] net_tx_action+0x402/0x660 [ 27.797801][ C1] handle_softirqs+0x1f9/0x5c0 [ 27.797948][ C1] ? dev_deactivate_many+0x1e2/0x8d0 [ 27.798100][ C1] do_softirq+0x4d/0xa0 [ 27.798207][ C1] [ 27.798288][ C1] [ 27.798366][ C1] __local_bh_enable_ip+0xf6/0x120 [ 27.798533][ C1] dev_deactivate_many+0x1e7/0x8d0 [ 27.798682][ C1] __dev_close_many+0x12b/0x2d0 [ 27.798898][ C1] ? __pfx___dev_close_many+0x10/0x10 [ 27.799040][ C1] dev_close_many+0x202/0x650 [ 27.799186][ C1] ? lock_acquire.part.0+0xeb/0x330 [ 27.799363][ C1] ? default_device_exit_batch+0x81/0x2d0 [ 27.799537][ C1] ? __pfx_dev_close_many+0x10/0x10 [ 27.799689][ C1] ? __mutex_trylock_common+0xfa/0x260 [ 27.799898][ C1] unregister_netdevice_many_notify+0x8e5/0x1570 [ 27.800096][ C1] ? lock_acquire+0x32/0xc0 [ 27.800254][ C1] ? trace_contention_end+0xeb/0x150 [ 27.800418][ C1] ? __mutex_lock+0x170/0xac0 [ 27.800571][ C1] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 27.800773][ C1] ? mark_lock+0x38/0x3e0 [ 27.800899][ C1] ? mutex_is_locked+0x17/0x50 [ 27.801052][ C1] ? rtnl_is_locked+0x15/0x20 [ 27.801206][ C1] ? unregister_netdevice_queue+0x70/0x410 [ 27.801404][ C1] ? __pfx_unregister_netdevice_queue+0x10/0x10 [ 27.801586][ C1] ? __pfx_unregister_netdevice_queue+0x10/0x10 [ 27.801783][ C1] default_device_exit_batch+0x234/0x2d0 [ 27.801953][ C1] ? __pfx_default_device_exit_batch+0x10/0x10 [ 27.802133][ C1] ? mutex_is_locked+0x17/0x50 [ 27.802286][ C1] ? nexthop_net_exit_batch_rtnl+0x83/0x210 [ 27.802465][ C1] cleanup_net+0x4ef/0x9d0 [ 27.802613][ C1] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 27.802753][ C1] ? __pfx_cleanup_net+0x10/0x10 [ 27.802912][ C1] ? trace_lock_acquire+0x14d/0x1f0 [ 27.803053][ C1] ? process_one_work+0xdf1/0x1670 [ 27.803196][ C1] ? lock_acquire+0x32/0xc0 [ 27.803340][ C1] ? process_one_work+0xdf1/0x1670 [ 27.803488][ C1] process_one_work+0xe3b/0x1670 [ 27.803633][ C1] ? __pfx___lock_release+0x10/0x10 [ 27.803788][ C1] ? __pfx_process_one_work+0x10/0x10 [ 27.803954][ C1] ? assign_work+0x16c/0x240 [ 27.804095][ C1] worker_thread+0x587/0xce0 [ 27.804247][ C1] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 27.804424][ C1] ? __pfx_worker_thread+0x10/0x10 [ 27.804566][ C1] ? __pfx_worker_thread+0x10/0x10 [ 27.804776][ C1] kthread+0x28a/0x350 [ 27.804887][ C1] ? __pfx_kthread+0x10/0x10 [ 27.805027][ C1] ret_from_fork+0x31/0x70 [ 27.805176][ C1] ? __pfx_kthread+0x10/0x10 [ 27.805316][ C1] ret_from_fork_asm+0x1a/0x30 [ 27.805530][ C1]