[    2.269071] veth0: renamed from veth-rt-1
[    2.380998] veth0: renamed from veth-rt-2
[    3.969889] BUG: kernel NULL pointer dereference, address: 0000000000000000
[    3.969998] #PF: supervisor write access in kernel mode
[    3.970058] #PF: error_code(0x0002) - not-present page
[    3.970116] PGD 0 P4D 0 
[    3.970145] Oops: Oops: 0002 [#1] SMP
[    3.970190] CPU: 0 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.18.0-rc5-virtme #1 PREEMPT(voluntary) 
[    3.970300] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    3.970373] Workqueue: netns cleanup_net
[    3.970432] RIP: 0010:work_grab_pending+0x2f/0x1b0
[    3.970500] 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
[    3.970714] RSP: 0018:ffffadf340067bb8 EFLAGS: 00010046
[    3.970771] RAX: 0000000000000246 RBX: 0000000000000000 RCX: 0000000000000004
[    3.970860] RDX: ffffadf340067bf0 RSI: 0000000000000000 RDI: 0000000000000000
[    3.970949] RBP: ffffadf340067bf0 R08: ffff99ac8139b673 R09: 0000000000000002
[    3.971040] R10: ffff99acbec28840 R11: ffff99ac8139ae90 R12: 0000000000000000
[    3.971127] R13: ffffadf340067ce8 R14: 0000000000000020 R15: ffffadf340067df0
[    3.971219] FS:  0000000000000000(0000) GS:ffff99ad2fb91000(0000) knlGS:0000000000000000
[    3.971300] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    3.971374] CR2: 0000000000000000 CR3: 000000003ae46006 CR4: 0000000000772ef0
[    3.971463] PKRU: 55555554
[    3.971490] Call Trace:
[    3.971527]  <TASK>
[    3.971566]  __cancel_work+0x29/0xe0
[    3.971617]  ? queue_delayed_work_on+0x54/0x60
[    3.971673]  __cancel_work_sync+0x16/0x80
[    3.971716]  __dev_close_many+0x113/0x2b0
[    3.971770]  netif_close_many+0x98/0x160
[    3.971813]  unregister_netdevice_many_notify+0x1ea/0xaa0
[    3.971868]  ? unregister_netdevice_queue+0x29/0xe0
[    3.971927]  default_device_exit_batch+0x29b/0x300
[    3.971986]  ? mutex_lock+0x12/0x30
[    3.972037]  ops_undo_list+0xec/0x1f0
[    3.972073]  cleanup_net+0x1b7/0x300
[    3.972124]  process_one_work+0x162/0x380
[    3.972167]  worker_thread+0x299/0x3c0
[    3.972213]  ? rescuer_thread+0x4c0/0x4c0
[    3.972257]  kthread+0x101/0x1f0
[    3.972305]  ? kthreads_online_cpu+0x110/0x110
[    3.972371]  ? kthreads_online_cpu+0x110/0x110
[    3.972428]  ret_from_fork+0x11c/0x140
[    3.972481]  ? kthreads_online_cpu+0x110/0x110
[    3.972551]  ret_from_fork_asm+0x11/0x20
[    3.972603]  </TASK>
[    3.972643] Modules linked in: ip6t_rpfilter nft_compat nf_tables
[    3.972735] CR2: 0000000000000000
[    3.972784] ---[ end trace 0000000000000000 ]---
[    3.972843] RIP: 0010:work_grab_pending+0x2f/0x1b0
[    3.972901] 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
[    3.973104] RSP: 0018:ffffadf340067bb8 EFLAGS: 00010046
[    3.973160] RAX: 0000000000000246 RBX: 0000000000000000 RCX: 0000000000000004
[    3.973249] RDX: ffffadf340067bf0 RSI: 0000000000000000 RDI: 0000000000000000
[    3.973333] RBP: ffffadf340067bf0 R08: ffff99ac8139b673 R09: 0000000000000002
[    3.973424] R10: ffff99acbec28840 R11: ffff99ac8139ae90 R12: 0000000000000000
[    3.973511] R13: ffffadf340067ce8 R14: 0000000000000020 R15: ffffadf340067df0
[    3.973601] FS:  0000000000000000(0000) GS:ffff99ad2fb91000(0000) knlGS:0000000000000000
[    3.973687] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    3.973768] CR2: 0000000000000000 CR3: 000000003ae46006 CR4: 0000000000772ef0
[    3.973856] PKRU: 55555554
[    3.973883] note: kworker/u16:0[12] exited with irqs disabled