[   32.696072] veth0: renamed from veth-rt-1
[   32.818313] veth0: renamed from veth-rt-2
[   33.369782] ip (414) used greatest stack depth: 12072 bytes left
[   60.544430] BUG: kernel NULL pointer dereference, address: 0000000000000000
[   60.544504] #PF: supervisor write access in kernel mode
[   60.544539] #PF: error_code(0x0002) - not-present page
[   60.544575] PGD 40a4067 P4D 40a4067 PUD 5787067 PMD 0 
[   60.544623] Oops: Oops: 0002 [#1] SMP
[   60.544657] CPU: 2 UID: 0 PID: 67 Comm: kworker/u16:1 Not tainted 6.18.0-rc5-virtme #1 PREEMPT(voluntary) 
[   60.544723] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   60.544766] Workqueue: netns cleanup_net
[   60.544815] RIP: 0010:work_grab_pending+0x2f/0x1b0
[   60.544869] 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
[   60.544979] RSP: 0018:ffffb2dd00257b88 EFLAGS: 00010046
[   60.545014] RAX: 0000000000000246 RBX: 0000000000000000 RCX: 0000000000000004
[   60.545064] RDX: ffffb2dd00257bc0 RSI: 0000000000000000 RDI: 0000000000000000
[   60.545114] RBP: ffffb2dd00257bc0 R08: ffff964142111f73 R09: ffffffffb3071c80
[   60.545165] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
[   60.545215] R13: 0000000000000000 R14: 0000000000000020 R15: 0000000000000001
[   60.545267] FS:  0000000000000000(0000) GS:ffff9641cb491000(0000) knlGS:0000000000000000
[   60.545320] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   60.545362] CR2: 0000000000000000 CR3: 00000000043e6001 CR4: 0000000000772ef0
[   60.545413] PKRU: 55555554
[   60.545436] Call Trace:
[   60.545460]  <TASK>
[   60.545483]  __cancel_work+0x29/0xe0
[   60.545513]  ? linkwatch_urgent_event+0x2f/0xb0
[   60.545552]  __cancel_work_sync+0x16/0x80
[   60.545580]  __dev_close_many+0x113/0x2b0
[   60.545623]  __dev_change_flags+0xed/0x220
[   60.545657]  netif_change_flags+0x25/0x60
[   60.545694]  dev_change_flags+0x40/0xa0
[   60.545722]  cycle_netdev+0x36/0x70
[   60.545758]  vrf_dellink+0x5c/0xa0
[   60.545789]  default_device_exit_batch+0x246/0x300
[   60.545829]  ? mutex_lock+0x12/0x30
[   60.545865]  ops_undo_list+0xec/0x1f0
[   60.545897]  cleanup_net+0x1b7/0x300
[   60.545927]  process_one_work+0x162/0x380
[   60.545957]  worker_thread+0x299/0x3c0
[   60.545985]  ? rescuer_thread+0x4c0/0x4c0
[   60.546012]  kthread+0x101/0x1f0
[   60.546048]  ? kthreads_online_cpu+0x110/0x110
[   60.546117]  ? kthreads_online_cpu+0x110/0x110
[   60.546152]  ret_from_fork+0x11c/0x140
[   60.546193]  ? kthreads_online_cpu+0x110/0x110
[   60.546229]  ret_from_fork_asm+0x11/0x20
[   60.546268]  </TASK>
[   60.546288] Modules linked in:
[   60.546320] CR2: 0000000000000000
[   60.546354] ---[ end trace 0000000000000000 ]---
[   60.546394] RIP: 0010:work_grab_pending+0x2f/0x1b0
[   60.546431] 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
[   60.546541] RSP: 0018:ffffb2dd00257b88 EFLAGS: 00010046
[   60.546576] RAX: 0000000000000246 RBX: 0000000000000000 RCX: 0000000000000004
[   60.546633] RDX: ffffb2dd00257bc0 RSI: 0000000000000000 RDI: 0000000000000000
[   60.546691] RBP: ffffb2dd00257bc0 R08: ffff964142111f73 R09: ffffffffb3071c80
[   60.546741] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
[   60.546791] R13: 0000000000000000 R14: 0000000000000020 R15: 0000000000000001
[   60.546850] FS:  0000000000000000(0000) GS:ffff9641cb491000(0000) knlGS:0000000000000000
[   60.546900] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   60.546942] CR2: 0000000000000000 CR3: 00000000043e6001 CR4: 0000000000772ef0
[   60.546993] PKRU: 55555554
[   60.547013] note: kworker/u16:1[67] exited with irqs disabled