[    1.894264] ip (237) used greatest stack depth: 12152 bytes left
[   17.453726] pm_nl_ctl (818) used greatest stack depth: 12000 bytes left
[   32.616637] BUG: kernel NULL pointer dereference, address: 0000000000000000
[   32.616748] #PF: supervisor write access in kernel mode
[   32.616805] #PF: error_code(0x0002) - not-present page
[   32.616864] PGD 0 P4D 0 
[   32.616896] Oops: Oops: 0002 [#1] SMP
[   32.616940] CPU: 0 UID: 0 PID: 66 Comm: kworker/u16:1 Not tainted 6.18.0-rc5-virtme #1 PREEMPT(voluntary) 
[   32.617037] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   32.617099] Workqueue: netns cleanup_net
[   32.617145] RIP: 0010:work_grab_pending+0x2f/0x1b0
[   32.617215] 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
[   32.617397] RSP: 0018:ffffa98a4024fbb8 EFLAGS: 00010046
[   32.617448] RAX: 0000000000000246 RBX: 0000000000000000 RCX: 0000000000000800
[   32.617523] RDX: ffffa98a4024fbf0 RSI: 0000000000000000 RDI: 0000000000000000
[   32.617600] RBP: ffffa98a4024fbf0 R08: ffff8a95813a3673 R09: 0000000000000002
[   32.617673] R10: ffff8a95bfc28840 R11: ffff8a95813a2e90 R12: 0000000000000000
[   32.617746] R13: ffffa98a4024fce8 R14: 0000000000000020 R15: ffffa98a4024fdf0
[   32.617825] FS:  0000000000000000(0000) GS:ffff8a962c7c1000(0000) knlGS:0000000000000000
[   32.617912] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   32.617980] CR2: 0000000000000000 CR3: 0000000007b4e006 CR4: 0000000000772ef0
[   32.618056] PKRU: 55555554
[   32.618081] Call Trace:
[   32.618111]  <TASK>
[   32.618147]  __cancel_work+0x29/0xe0
[   32.618193]  ? queue_delayed_work_on+0x54/0x60
[   32.618244]  __cancel_work_sync+0x16/0x80
[   32.618289]  __dev_close_many+0x11b/0x280
[   32.618333]  netif_close_many+0x98/0x160
[   32.618382]  unregister_netdevice_many_notify+0x1d8/0xa50
[   32.618445]  ? unregister_netdevice_queue+0x29/0xe0
[   32.618506]  default_device_exit_batch+0x29b/0x300
[   32.618566]  ops_undo_list+0xec/0x1f0
[   32.618608]  cleanup_net+0x1b7/0x2b0
[   32.618656]  process_one_work+0x162/0x380
[   32.618701]  worker_thread+0x299/0x3c0
[   32.618747]  ? rescuer_thread+0x4c0/0x4c0
[   32.618786]  kthread+0x101/0x1f0
[   32.618833]  ? kthreads_online_cpu+0x110/0x110
[   32.618891]  ? kthreads_online_cpu+0x110/0x110
[   32.618943]  ret_from_fork+0x11c/0x140
[   32.618997]  ? kthreads_online_cpu+0x110/0x110
[   32.619055]  ret_from_fork_asm+0x11/0x20
[   32.619105]  </TASK>
[   32.619134] Modules linked in:
[   32.619175] CR2: 0000000000000000
[   32.619215] ---[ end trace 0000000000000000 ]---
[   32.619270] RIP: 0010:work_grab_pending+0x2f/0x1b0
[   32.619329] 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
[   32.619508] RSP: 0018:ffffa98a4024fbb8 EFLAGS: 00010046
[   32.619568] RAX: 0000000000000246 RBX: 0000000000000000 RCX: 0000000000000800
[   32.619643] RDX: ffffa98a4024fbf0 RSI: 0000000000000000 RDI: 0000000000000000
[   32.619723] RBP: ffffa98a4024fbf0 R08: ffff8a95813a3673 R09: 0000000000000002
[   32.619799] R10: ffff8a95bfc28840 R11: ffff8a95813a2e90 R12: 0000000000000000
[   32.619874] R13: ffffa98a4024fce8 R14: 0000000000000020 R15: ffffa98a4024fdf0
[   32.619949] FS:  0000000000000000(0000) GS:ffff8a962c7c1000(0000) knlGS:0000000000000000
[   32.620034] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   32.620105] CR2: 0000000000000000 CR3: 0000000007b4e006 CR4: 0000000000772ef0
[   32.620185] PKRU: 55555554
[   32.620214] note: kworker/u16:1[66] exited with irqs disabled