[    1.970829] ip (258) used greatest stack depth: 12376 bytes left
[    2.008214] ip (261) used greatest stack depth: 12328 bytes left
[    2.156318] BUG: kernel NULL pointer dereference, address: 0000000000000000
[    2.156393] #PF: supervisor write access in kernel mode
[    2.156430] #PF: error_code(0x0002) - not-present page
[    2.156461] PGD 0 P4D 0 
[    2.156483] Oops: Oops: 0002 [#1] SMP
[    2.156513] CPU: 1 UID: 0 PID: 66 Comm: kworker/u16:1 Not tainted 6.18.0-rc5-virtme #1 PREEMPT(voluntary) 
[    2.156574] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.156620] Workqueue: netns cleanup_net
[    2.156665] RIP: 0010:work_grab_pending+0x2f/0x1b0
[    2.156708] 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
[    2.156833] RSP: 0018:ffffaff24024fbb8 EFLAGS: 00010046
[    2.156871] RAX: 0000000000000246 RBX: 0000000000000000 RCX: 0000000000000000
[    2.156920] RDX: ffffaff24024fbf0 RSI: 0000000000000000 RDI: 0000000000000000
[    2.156967] RBP: ffffaff24024fbf0 R08: ffffffffa1a93e00 R09: 0000000000000101
[    2.157022] R10: ffffffffa26080d8 R11: ffffaff2400e4ff8 R12: 0000000000000000
[    2.157070] R13: ffffaff24024fce8 R14: 0000000000000020 R15: ffffaff24024fdf0
[    2.157120] FS:  0000000000000000(0000) GS:ffff99765be11000(0000) knlGS:0000000000000000
[    2.157173] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.157216] CR2: 0000000000000000 CR3: 0000000020446001 CR4: 0000000000772ef0
[    2.157279] PKRU: 55555554
[    2.157299] Call Trace:
[    2.157317]  <TASK>
[    2.157340]  __cancel_work+0x29/0xe0
[    2.157368]  ? queue_delayed_work_on+0x54/0x60
[    2.157406]  __cancel_work_sync+0x16/0x80
[    2.157435]  __dev_close_many+0x113/0x2b0
[    2.157464]  netif_close_many+0x98/0x160
[    2.157501]  unregister_netdevice_many_notify+0x1ea/0xaa0
[    2.157533]  ? unregister_netdevice_queue+0x29/0xe0
[    2.157570]  default_device_exit_batch+0x29b/0x300
[    2.157606]  ? mutex_lock+0x12/0x30
[    2.157636]  ops_undo_list+0xec/0x1f0
[    2.157677]  cleanup_net+0x1b7/0x300
[    2.157706]  process_one_work+0x162/0x380
[    2.157738]  worker_thread+0x299/0x3c0
[    2.157775]  ? rescuer_thread+0x4c0/0x4c0
[    2.157799]  kthread+0x101/0x1f0
[    2.157828]  ? kthreads_online_cpu+0x110/0x110
[    2.157867]  ? kthreads_online_cpu+0x110/0x110
[    2.157904]  ret_from_fork+0x11c/0x140
[    2.157934]  ? kthreads_online_cpu+0x110/0x110
[    2.157971]  ret_from_fork_asm+0x11/0x20
[    2.158001]  </TASK>
[    2.158029] Modules linked in: ila
[    2.158060] CR2: 0000000000000000
[    2.158088] ---[ end trace 0000000000000000 ]---
[    2.158120] RIP: 0010:work_grab_pending+0x2f/0x1b0
[    2.158157] 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
[    2.158280] RSP: 0018:ffffaff24024fbb8 EFLAGS: 00010046
[    2.158313] RAX: 0000000000000246 RBX: 0000000000000000 RCX: 0000000000000000
[    2.158360] RDX: ffffaff24024fbf0 RSI: 0000000000000000 RDI: 0000000000000000
[    2.158409] RBP: ffffaff24024fbf0 R08: ffffffffa1a93e00 R09: 0000000000000101
[    2.158457] R10: ffffffffa26080d8 R11: ffffaff2400e4ff8 R12: 0000000000000000
[    2.158515] R13: ffffaff24024fce8 R14: 0000000000000020 R15: ffffaff24024fdf0
[    2.158564] FS:  0000000000000000(0000) GS:ffff99765be11000(0000) knlGS:0000000000000000
[    2.158611] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.158666] CR2: 0000000000000000 CR3: 0000000020446001 CR4: 0000000000772ef0
[    2.158718] PKRU: 55555554
[    2.158738] note: kworker/u16:1[66] exited with irqs disabled

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