[    2.258969] u32 classifier
[    2.259022]     input device check on
[    2.259048]     Actions configured
[    2.269110] Mirror/redirect action on
[    2.270021] tc (264) used greatest stack depth: 11824 bytes left
[   65.495490] BUG: kernel NULL pointer dereference, address: 0000000000000000
[   65.495556] #PF: supervisor write access in kernel mode
[   65.495594] #PF: error_code(0x0002) - not-present page
[   65.495627] PGD 0 P4D 0 
[   65.495657] Oops: Oops: 0002 [#1] SMP
[   65.495688] CPU: 0 UID: 0 PID: 66 Comm: kworker/u16:1 Not tainted 6.18.0-rc5-virtme #1 PREEMPT(voluntary) 
[   65.495753] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   65.495799] Workqueue: netns cleanup_net
[   65.495839] RIP: 0010:work_grab_pending+0x2f/0x1b0
[   65.495882] Code: 83 e6 01 41 57 41 56 4c 8d 77 20 41 55 41 54 41 89 f4 55 48 89 d5 53 48 89 fb 9c 58 fa 48 89 45 00 45 85 e4 0f 85 8a 00 00 00 <f0> 48 0f ba 2b 00 41 0f 92 c5 72 0e 5b 44 89 e8 5d 41 5c 41 5d 41
[   65.496002] RSP: 0018:ffffa97a4024fbb8 EFLAGS: 00010046
[   65.496042] RAX: 0000000000000246 RBX: 0000000000000000 RCX: 00000000fffc6b79
[   65.496097] RDX: ffffa97a4024fbf0 RSI: 0000000000000000 RDI: 0000000000000000
[   65.496146] RBP: ffffa97a4024fbf0 R08: 0000000000000000 R09: 0000000000000002
[   65.496195] R10: 0000000000000001 R11: 0000000000000002 R12: 0000000000000000
[   65.496253] R13: ffffa97a4024fce8 R14: 0000000000000020 R15: ffffa97a4024fdf0
[   65.496305] FS:  0000000000000000(0000) GS:ffff95961b391000(0000) knlGS:0000000000000000
[   65.496359] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   65.496405] CR2: 0000000000000000 CR3: 000000001a646001 CR4: 0000000000772ef0
[   65.496457] PKRU: 55555554
[   65.496479] Call Trace:
[   65.496496]  <TASK>
[   65.496521]  __cancel_work+0x29/0xe0
[   65.496555]  ? dev_deactivate_many+0x2c9/0x300
[   65.496593]  __cancel_work_sync+0x16/0x80
[   65.496618]  __dev_close_many+0x113/0x2b0
[   65.496648]  netif_close_many+0x98/0x160
[   65.496682]  unregister_netdevice_many_notify+0x1ea/0xaa0
[   65.496724]  default_device_exit_batch+0x29b/0x300
[   65.496762]  ? mutex_lock+0x12/0x30
[   65.496799]  ops_undo_list+0xec/0x1f0
[   65.496829]  cleanup_net+0x1b7/0x300
[   65.496863]  process_one_work+0x162/0x380
[   65.496893]  worker_thread+0x299/0x3c0
[   65.496924]  ? rescuer_thread+0x4c0/0x4c0
[   65.496955]  kthread+0x101/0x1f0
[   65.496986]  ? kthreads_online_cpu+0x110/0x110
[   65.497024]  ? kthreads_online_cpu+0x110/0x110
[   65.497058]  ret_from_fork+0x11c/0x140
[   65.497088]  ? kthreads_online_cpu+0x110/0x110
[   65.497130]  ret_from_fork_asm+0x11/0x20
[   65.497166]  </TASK>
[   65.497183] Modules linked in: act_mirred cls_u32 sch_ingress ifb
[   65.497247] CR2: 0000000000000000
[   65.497272] ---[ end trace 0000000000000000 ]---
[   65.497311] RIP: 0010:work_grab_pending+0x2f/0x1b0
[   65.497351] Code: 83 e6 01 41 57 41 56 4c 8d 77 20 41 55 41 54 41 89 f4 55 48 89 d5 53 48 89 fb 9c 58 fa 48 89 45 00 45 85 e4 0f 85 8a 00 00 00 <f0> 48 0f ba 2b 00 41 0f 92 c5 72 0e 5b 44 89 e8 5d 41 5c 41 5d 41
[   65.497472] RSP: 0018:ffffa97a4024fbb8 EFLAGS: 00010046
[   65.497510] RAX: 0000000000000246 RBX: 0000000000000000 RCX: 00000000fffc6b79
[   65.497559] RDX: ffffa97a4024fbf0 RSI: 0000000000000000 RDI: 0000000000000000
[   65.497606] RBP: ffffa97a4024fbf0 R08: 0000000000000000 R09: 0000000000000002
[   65.497655] R10: 0000000000000001 R11: 0000000000000002 R12: 0000000000000000
[   65.497704] R13: ffffa97a4024fce8 R14: 0000000000000020 R15: ffffa97a4024fdf0
[   65.497768] FS:  0000000000000000(0000) GS:ffff95961b391000(0000) knlGS:0000000000000000
[   65.497824] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   65.497879] CR2: 0000000000000000 CR3: 000000001a646001 CR4: 0000000000772ef0
[   65.497929] PKRU: 55555554
[   65.497950] note: kworker/u16:1[66] exited with irqs disabled