[    2.067228] bind_bhash (258) used greatest stack depth: 11960 bytes left
[    2.087249] BUG: kernel NULL pointer dereference, address: 0000000000000000
[    2.087323] #PF: supervisor write access in kernel mode
[    2.087366] #PF: error_code(0x0002) - not-present page
[    2.087413] PGD 0 P4D 0 
[    2.087438] Oops: Oops: 0002 [#1] SMP
[    2.087472] CPU: 1 UID: 0 PID: 66 Comm: kworker/u16:1 Not tainted 6.18.0-rc5-virtme #1 PREEMPT(voluntary) 
[    2.087540] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.087592] Workqueue: netns cleanup_net
[    2.087634] RIP: 0010:work_grab_pending+0x2f/0x1b0
[    2.087691] 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
[    2.087826] RSP: 0018:ffffb5304024fbb8 EFLAGS: 00010046
[    2.087869] RAX: 0000000000000246 RBX: 0000000000000000 RCX: 0000000000000000
[    2.087930] RDX: ffffb5304024fbf0 RSI: 0000000000000000 RDI: 0000000000000000
[    2.087992] RBP: ffffb5304024fbf0 R08: ffffffff90493e00 R09: 0000000000000101
[    2.088059] R10: ffffffff910080d8 R11: ffffb530400e4ff8 R12: 0000000000000000
[    2.088115] R13: ffffb5304024fce8 R14: 0000000000000020 R15: ffffb5304024fdf0
[    2.088177] FS:  0000000000000000(0000) GS:ffff8bfe2d411000(0000) knlGS:0000000000000000
[    2.088247] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.088297] CR2: 0000000000000000 CR3: 0000000032646006 CR4: 0000000000772ef0
[    2.088359] PKRU: 55555554
[    2.088384] Call Trace:
[    2.088412]  <TASK>
[    2.088437]  __cancel_work+0x29/0xe0
[    2.088474]  ? queue_delayed_work_on+0x54/0x60
[    2.088519]  __cancel_work_sync+0x16/0x80
[    2.088552]  __dev_close_many+0x113/0x2b0
[    2.088593]  netif_close_many+0x98/0x160
[    2.088630]  unregister_netdevice_many_notify+0x1ea/0xaa0
[    2.088680]  ? unregister_netdevice_queue+0x29/0xe0
[    2.088716]  default_device_exit_batch+0x29b/0x300
[    2.088759]  ? mutex_lock+0x12/0x30
[    2.088794]  ops_undo_list+0xec/0x1f0
[    2.088831]  cleanup_net+0x1b7/0x300
[    2.088863]  process_one_work+0x162/0x380
[    2.088898]  worker_thread+0x299/0x3c0
[    2.088933]  ? rescuer_thread+0x4c0/0x4c0
[    2.088966]  kthread+0x101/0x1f0
[    2.089007]  ? kthreads_online_cpu+0x110/0x110
[    2.089049]  ? kthreads_online_cpu+0x110/0x110
[    2.089089]  ret_from_fork+0x11c/0x140
[    2.089130]  ? kthreads_online_cpu+0x110/0x110
[    2.089172]  ret_from_fork_asm+0x11/0x20
[    2.089215]  </TASK>
[    2.089237] Modules linked in:
[    2.089271] CR2: 0000000000000000
[    2.089302] ---[ end trace 0000000000000000 ]---
[    2.089345] RIP: 0010:work_grab_pending+0x2f/0x1b0
[    2.089388] 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
[    2.089522] RSP: 0018:ffffb5304024fbb8 EFLAGS: 00010046
[    2.089564] RAX: 0000000000000246 RBX: 0000000000000000 RCX: 0000000000000000
[    2.089625] RDX: ffffb5304024fbf0 RSI: 0000000000000000 RDI: 0000000000000000
[    2.089692] RBP: ffffb5304024fbf0 R08: ffffffff90493e00 R09: 0000000000000101
[    2.089746] R10: ffffffff910080d8 R11: ffffb530400e4ff8 R12: 0000000000000000
[    2.089801] R13: ffffb5304024fce8 R14: 0000000000000020 R15: ffffb5304024fdf0
[    2.089863] FS:  0000000000000000(0000) GS:ffff8bfe2d411000(0000) knlGS:0000000000000000
[    2.089926] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.089976] CR2: 0000000000000000 CR3: 0000000032646006 CR4: 0000000000772ef0
[    2.090041] PKRU: 55555554
[    2.090066] note: kworker/u16:1[66] exited with irqs disabled