[    1.947681] ip (260) used greatest stack depth: 12136 bytes left
[    2.649366] Initializing XFRM netlink socket
[  176.643528] BUG: kernel NULL pointer dereference, address: 0000000000000000
[  176.643642] #PF: supervisor write access in kernel mode
[  176.643697] #PF: error_code(0x0002) - not-present page
[  176.643744] PGD 0 P4D 0 
[  176.643774] Oops: Oops: 0002 [#1] SMP
[  176.643812] CPU: 0 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.18.0-rc5-virtme #1 PREEMPT(voluntary) 
[  176.643910] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  176.643976] Workqueue: netns cleanup_net
[  176.644033] RIP: 0010:work_grab_pending+0x2f/0x1b0
[  176.644094] 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
[  176.644281] RSP: 0018:ffffafc4c0067bb8 EFLAGS: 00010046
[  176.644332] RAX: 0000000000000246 RBX: 0000000000000000 RCX: 0000000000001000
[  176.644415] RDX: ffffafc4c0067bf0 RSI: 0000000000000000 RDI: 0000000000000000
[  176.644491] RBP: ffffafc4c0067bf0 R08: ffff8d9cc13ab673 R09: 0000000000000002
[  176.644566] R10: ffff8d9cfec28840 R11: ffff8d9cc13aae90 R12: 0000000000000000
[  176.644642] R13: ffffafc4c0067ce8 R14: 0000000000000020 R15: ffffafc4c0067df0
[  176.644723] FS:  0000000000000000(0000) GS:ffff8d9d4db91000(0000) knlGS:0000000000000000
[  176.644805] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  176.644868] CR2: 0000000000000000 CR3: 0000000031246005 CR4: 0000000000772ef0
[  176.644946] PKRU: 55555554
[  176.644988] Call Trace:
[  176.645022]  <TASK>
[  176.645061]  __cancel_work+0x29/0xe0
[  176.645106]  ? queue_delayed_work_on+0x54/0x60
[  176.645161]  __cancel_work_sync+0x16/0x80
[  176.645204]  __dev_close_many+0x113/0x2b0
[  176.645257]  netif_close_many+0x98/0x160
[  176.645305]  unregister_netdevice_many_notify+0x1ea/0xaa0
[  176.645365]  ? unregister_netdevice_queue+0x29/0xe0
[  176.645426]  default_device_exit_batch+0x29b/0x300
[  176.645484]  ? mutex_lock+0x12/0x30
[  176.645537]  ops_undo_list+0xec/0x1f0
[  176.645583]  cleanup_net+0x1b7/0x300
[  176.645617]  process_one_work+0x162/0x380
[  176.645650]  worker_thread+0x299/0x3c0
[  176.645683]  ? rescuer_thread+0x4c0/0x4c0
[  176.645715]  kthread+0x101/0x1f0
[  176.645751]  ? kthreads_online_cpu+0x110/0x110
[  176.645810]  ? kthreads_online_cpu+0x110/0x110
[  176.645859]  ret_from_fork+0x11c/0x140
[  176.645902]  ? kthreads_online_cpu+0x110/0x110
[  176.645942]  ret_from_fork_asm+0x11/0x20
[  176.645983]  </TASK>
[  176.646006] Modules linked in: xfrm_user xt_policy nft_compat nf_tables
[  176.646077] CR2: 0000000000000000
[  176.646122] ---[ end trace 0000000000000000 ]---
[  176.646168] RIP: 0010:work_grab_pending+0x2f/0x1b0
[  176.646208] 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
[  176.646325] RSP: 0018:ffffafc4c0067bb8 EFLAGS: 00010046
[  176.646388] RAX: 0000000000000246 RBX: 0000000000000000 RCX: 0000000000001000
[  176.646464] RDX: ffffafc4c0067bf0 RSI: 0000000000000000 RDI: 0000000000000000
[  176.646541] RBP: ffffafc4c0067bf0 R08: ffff8d9cc13ab673 R09: 0000000000000002
[  176.646599] R10: ffff8d9cfec28840 R11: ffff8d9cc13aae90 R12: 0000000000000000
[  176.646661] R13: ffffafc4c0067ce8 R14: 0000000000000020 R15: ffffafc4c0067df0
[  176.646734] FS:  0000000000000000(0000) GS:ffff8d9d4db91000(0000) knlGS:0000000000000000
[  176.646819] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  176.646869] CR2: 0000000000000000 CR3: 0000000031246005 CR4: 0000000000772ef0
[  176.646930] PKRU: 55555554
[  176.646952] note: kworker/u16:0[12] exited with irqs disabled