[    2.141945] ip (263) used greatest stack depth: 12136 bytes left
[    2.272829] GACT probability NOT on
[    2.463029] BUG: kernel NULL pointer dereference, address: 0000000000000000
[    2.463115] #PF: supervisor write access in kernel mode
[    2.463167] #PF: error_code(0x0002) - not-present page
[    2.463212] PGD 0 P4D 0 
[    2.463242] Oops: Oops: 0002 [#1] SMP
[    2.463285] CPU: 3 UID: 0 PID: 66 Comm: kworker/u16:1 Not tainted 6.18.0-rc5-virtme #1 PREEMPT(voluntary) 
[    2.463368] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.463424] Workqueue: netns cleanup_net
[    2.463467] RIP: 0010:work_grab_pending+0x2f/0x1b0
[    2.463520] 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
[    2.463682] RSP: 0018:ffffbbf14024fc30 EFLAGS: 00010046
[    2.463727] RAX: 0000000000000246 RBX: 0000000000000000 RCX: 0000000000000000
[    2.463795] RDX: ffffbbf14024fc68 RSI: 0000000000000000 RDI: 0000000000000000
[    2.463862] RBP: ffffbbf14024fc68 R08: 0000000000000006 R09: 0000000000000132
[    2.463929] R10: ffff92affedacc00 R11: 0000000000000036 R12: 0000000000000000
[    2.463996] R13: ffffbbf14024fd60 R14: 0000000000000020 R15: ffffbbf14024fdf0
[    2.464065] FS:  0000000000000000(0000) GS:ffff92b063b11000(0000) knlGS:0000000000000000
[    2.464138] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.464200] CR2: 0000000000000000 CR3: 0000000023846001 CR4: 0000000000772ef0
[    2.464269] PKRU: 55555554
[    2.464290] Call Trace:
[    2.464316]  <TASK>
[    2.464346]  __cancel_work+0x29/0xe0
[    2.464387]  __cancel_work_sync+0x16/0x80
[    2.464421]  __dev_close_many+0x113/0x2b0
[    2.464463]  netif_close_many+0x98/0x160
[    2.464496]  ? synchronize_rcu_expedited+0x143/0x290
[    2.464551]  unregister_netdevice_many_notify+0x1ea/0xaa0
[    2.464598]  ops_undo_list+0x1de/0x1f0
[    2.464637]  cleanup_net+0x1b7/0x300
[    2.464671]  process_one_work+0x162/0x380
[    2.464713]  worker_thread+0x299/0x3c0
[    2.464752]  ? rescuer_thread+0x4c0/0x4c0
[    2.464791]  kthread+0x101/0x1f0
[    2.464833]  ? kthreads_online_cpu+0x110/0x110
[    2.464884]  ? kthreads_online_cpu+0x110/0x110
[    2.464929]  ret_from_fork+0x11c/0x140
[    2.464970]  ? kthreads_online_cpu+0x110/0x110
[    2.465015]  ret_from_fork_asm+0x11/0x20
[    2.465058]  </TASK>
[    2.465078] Modules linked in: vxlan act_gact cls_flower sch_ingress
[    2.465143] CR2: 0000000000000000
[    2.465176] ---[ end trace 0000000000000000 ]---
[    2.465221] RIP: 0010:work_grab_pending+0x2f/0x1b0
[    2.465282] 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
[    2.465439] RSP: 0018:ffffbbf14024fc30 EFLAGS: 00010046
[    2.465484] RAX: 0000000000000246 RBX: 0000000000000000 RCX: 0000000000000000
[    2.465550] RDX: ffffbbf14024fc68 RSI: 0000000000000000 RDI: 0000000000000000
[    2.465616] RBP: ffffbbf14024fc68 R08: 0000000000000006 R09: 0000000000000132
[    2.465683] R10: ffff92affedacc00 R11: 0000000000000036 R12: 0000000000000000
[    2.465752] R13: ffffbbf14024fd60 R14: 0000000000000020 R15: ffffbbf14024fdf0
[    2.465820] FS:  0000000000000000(0000) GS:ffff92b063b11000(0000) knlGS:0000000000000000
[    2.465894] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.465954] CR2: 0000000000000000 CR3: 0000000023846001 CR4: 0000000000772ef0
[    2.466024] PKRU: 55555554
[    2.466045] note: kworker/u16:1[66] exited with irqs disabled

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