[    2.255018] GACT probability NOT on
[    2.256498] tc (278) used greatest stack depth: 12400 bytes left
[    2.851279] BUG: kernel NULL pointer dereference, address: 0000000000000000
[    2.851366] #PF: supervisor write access in kernel mode
[    2.851411] #PF: error_code(0x0002) - not-present page
[    2.851457] PGD 0 P4D 0 
[    2.851483] Oops: Oops: 0002 [#1] SMP
[    2.851524] CPU: 2 UID: 0 PID: 67 Comm: kworker/u16:1 Not tainted 6.18.0-rc5-virtme #1 PREEMPT(voluntary) 
[    2.851600] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.851651] Workqueue: netns cleanup_net
[    2.851707] RIP: 0010:work_grab_pending+0x2f/0x1b0
[    2.851759] 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
[    2.851900] RSP: 0018:ffffadfec0257c30 EFLAGS: 00010046
[    2.851947] RAX: 0000000000000246 RBX: 0000000000000000 RCX: 0000000000000000
[    2.852015] RDX: ffffadfec0257c68 RSI: 0000000000000000 RDI: 0000000000000000
[    2.852078] RBP: ffffadfec0257c68 R08: 0000000000000006 R09: 0000000000000132
[    2.852136] R10: ffff98a13ed2cc00 R11: 0000000000000004 R12: 0000000000000000
[    2.852194] R13: ffffadfec0257d60 R14: 0000000000000020 R15: ffffadfec0257df0
[    2.852260] FS:  0000000000000000(0000) GS:ffff98a197491000(0000) knlGS:0000000000000000
[    2.852324] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.852377] CR2: 0000000000000000 CR3: 000000000666c001 CR4: 0000000000772ef0
[    2.852442] PKRU: 55555554
[    2.852467] Call Trace:
[    2.852489]  <TASK>
[    2.852520]  __cancel_work+0x29/0xe0
[    2.852558]  __cancel_work_sync+0x16/0x80
[    2.852593]  __dev_close_many+0x113/0x2b0
[    2.852634]  netif_close_many+0x98/0x160
[    2.852670]  unregister_netdevice_many_notify+0x1ea/0xaa0
[    2.852716]  ops_undo_list+0x1de/0x1f0
[    2.852756]  cleanup_net+0x1b7/0x300
[    2.852793]  process_one_work+0x162/0x380
[    2.852828]  worker_thread+0x299/0x3c0
[    2.852863]  ? rescuer_thread+0x4c0/0x4c0
[    2.852903]  kthread+0x101/0x1f0
[    2.852939]  ? kthreads_online_cpu+0x110/0x110
[    2.852984]  ? kthreads_online_cpu+0x110/0x110
[    2.853029]  ret_from_fork+0x11c/0x140
[    2.853067]  ? kthreads_online_cpu+0x110/0x110
[    2.853110]  ret_from_fork_asm+0x11/0x20
[    2.853148]  </TASK>
[    2.853172] Modules linked in: act_gact cls_flower sch_ingress vxlan
[    2.853231] CR2: 0000000000000000
[    2.853263] ---[ end trace 0000000000000000 ]---
[    2.853308] RIP: 0010:work_grab_pending+0x2f/0x1b0
[    2.853352] 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
[    2.853495] RSP: 0018:ffffadfec0257c30 EFLAGS: 00010046
[    2.853540] RAX: 0000000000000246 RBX: 0000000000000000 RCX: 0000000000000000
[    2.853604] RDX: ffffadfec0257c68 RSI: 0000000000000000 RDI: 0000000000000000
[    2.853669] RBP: ffffadfec0257c68 R08: 0000000000000006 R09: 0000000000000132
[    2.853733] R10: ffff98a13ed2cc00 R11: 0000000000000004 R12: 0000000000000000
[    2.853790] R13: ffffadfec0257d60 R14: 0000000000000020 R15: ffffadfec0257df0
[    2.853856] FS:  0000000000000000(0000) GS:ffff98a197491000(0000) knlGS:0000000000000000
[    2.853920] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.853973] CR2: 0000000000000000 CR3: 000000000666c001 CR4: 0000000000772ef0
[    2.854032] PKRU: 55555554
[    2.854056] note: kworker/u16:1[67] exited with irqs disabled