[    2.280108] netdevsim netdevsim22085 eni22085np1: renamed from eth0
[    2.606372] BUG: kernel NULL pointer dereference, address: 0000000000000000
[    2.606456] #PF: supervisor write access in kernel mode
[    2.606500] #PF: error_code(0x0002) - not-present page
[    2.606545] PGD 0 P4D 0 
[    2.606569] Oops: Oops: 0002 [#1] SMP
[    2.606606] CPU: 3 UID: 0 PID: 237 Comm: python3 Not tainted 6.18.0-rc5-virtme #1 PREEMPT(voluntary) 
[    2.606672] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.606726] RIP: 0010:work_grab_pending+0x2f/0x1b0
[    2.606777] 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
[    2.606911] RSP: 0018:ffffab91c0577ae8 EFLAGS: 00010046
[    2.606950] RAX: 0000000000000246 RBX: 0000000000000000 RCX: 000000008010000a
[    2.607009] RDX: ffffab91c0577b20 RSI: 0000000000000000 RDI: 0000000000000000
[    2.607067] RBP: ffffab91c0577b20 R08: 0000000000000001 R09: ffffffff97d3c800
[    2.607120] R10: ffff9766431cb800 R11: 0000000000000001 R12: 0000000000000000
[    2.607180] R13: ffffab91c0577c18 R14: 0000000000000020 R15: 0000000000000000
[    2.607237] FS:  00007f0025d8c740(0000) GS:ffff9766e5b56000(0000) knlGS:0000000000000000
[    2.607302] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.607349] CR2: 0000000000000000 CR3: 0000000003afe004 CR4: 0000000000772ef0
[    2.607411] PKRU: 55555554
[    2.607436] Call Trace:
[    2.607467]  <TASK>
[    2.607494]  __cancel_work+0x29/0xe0
[    2.607528]  __cancel_work_sync+0x16/0x80
[    2.607563]  __dev_close_many+0x113/0x2b0
[    2.607602]  netif_close_many+0x98/0x160
[    2.607636]  unregister_netdevice_many_notify+0x10c/0xaa0
[    2.607682]  unregister_netdevice_queue+0xa0/0xe0
[    2.607723]  nsim_destroy+0x86/0x180 [netdevsim]
[    2.607771]  __nsim_dev_port_del+0x47/0x70 [netdevsim]
[    2.607822]  nsim_dev_reload_destroy+0x5b/0x110 [netdevsim]
[    2.607868]  nsim_drv_remove+0x2f/0xb0 [netdevsim]
[    2.607913]  device_release_driver_internal+0x193/0x200
[    2.607961]  bus_remove_device+0xc1/0x100
[    2.607995]  device_del+0x15f/0x480
[    2.608035]  device_unregister+0x12/0x30
[    2.608072]  del_device_store+0x117/0x1a0 [netdevsim]
[    2.608116]  kernfs_fop_write_iter+0x12b/0x1c0
[    2.608164]  vfs_write+0x33a/0x470
[    2.608205]  ksys_write+0x65/0xe0
[    2.608239]  do_syscall_64+0xa4/0xfd0
[    2.608276]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[    2.608318] RIP: 0033:0x7f0025f6b257
[    2.608351] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
[    2.608477] RSP: 002b:00007ffc67a9e9c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[    2.608535] RAX: ffffffffffffffda RBX: 00007f0025d8c6e0 RCX: 00007f0025f6b257
[    2.608589] RDX: 0000000000000005 RSI: 00005642538d65f0 RDI: 0000000000000006
[    2.608649] RBP: 0000000000000005 R08: 0000000000000000 R09: 0000000000000002
[    2.608709] R10: 0000000000000002 R11: 0000000000000246 R12: 00007f0017d14f40
[    2.608769] R13: 00005642538d65f0 R14: 0000000000000006 R15: 000056425366e0c0
[    2.608831]  </TASK>
[    2.608857] Modules linked in: netdevsim
[    2.608892] CR2: 0000000000000000
[    2.608921] ---[ end trace 0000000000000000 ]---
[    2.608960] RIP: 0010:work_grab_pending+0x2f/0x1b0
[    2.609001] 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
[    2.609131] RSP: 0018:ffffab91c0577ae8 EFLAGS: 00010046
[    2.609168] RAX: 0000000000000246 RBX: 0000000000000000 RCX: 000000008010000a
[    2.609221] RDX: ffffab91c0577b20 RSI: 0000000000000000 RDI: 0000000000000000
[    2.609274] RBP: ffffab91c0577b20 R08: 0000000000000001 R09: ffffffff97d3c800
[    2.609333] R10: ffff9766431cb800 R11: 0000000000000001 R12: 0000000000000000
[    2.609392] R13: ffffab91c0577c18 R14: 0000000000000020 R15: 0000000000000000
[    2.609449] FS:  00007f0025d8c740(0000) GS:ffff9766e5b56000(0000) knlGS:0000000000000000
[    2.609507] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.609553] CR2: 0000000000000000 CR3: 0000000003afe004 CR4: 0000000000772ef0
[    2.609609] PKRU: 55555554
[    2.609632] note: python3[237] exited with irqs disabled