[    9.399391] ------------[ cut here ]------------
[    9.399440] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: python3/749
[    9.399501] Modules linked in: netconsole netdevsim
[    9.399536] CPU: 3 UID: 0 PID: 749 Comm: python3 Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[    9.399585] Tainted: [W]=WARN
[    9.399605] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    9.399642] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[    9.399671] Code: 80 00 00 00 e8 09 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 76 a5 fb ff b9 a6 ff ff
[    9.399772] RSP: 0018:ff56fe98c090b9d0 EFLAGS: 00010286
[    9.399799] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[    9.399848] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff355f76018f1600
[    9.399892] RBP: 0000000000000000 R08: ff355f7602facd10 R09: ff355f76060bd030
[    9.399940] R10: ff355f760c13e118 R11: fefefefefefefeff R12: 0000000000000000
[    9.399982] R13: 0000000000000010 R14: ff355f760c13e000 R15: ff355f76018f1600
[    9.400027] FS:  00007f38b8fb0400(0000) GS:ff355f76b49d5000(0000) knlGS:0000000000000000
[    9.400072] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.400106] CR2: 00007f38b8683050 CR3: 00000000049b6003 CR4: 0000000000771ef0
[    9.400151] PKRU: 55555554
[    9.400166] Call Trace:
[    9.400183]  <TASK>
[    9.400198]  rtmsg_ifinfo+0x3c/0xa0
[    9.400231]  register_netdevice+0x8e1/0xa70
[    9.400260]  nsim_create+0x319/0x410 [netdevsim]
[    9.400291]  __nsim_dev_port_add+0x1cc/0x420 [netdevsim]
[    9.400326]  nsim_drv_probe+0x655/0x750 [netdevsim]
[    9.400359]  really_probe+0xc9/0x290
[    9.400382]  ? driver_probe_device+0xe0/0xe0
[    9.400413]  __driver_probe_device+0x8d/0x160
[    9.400441]  driver_probe_device+0x1f/0xe0
[    9.400459]  __device_attach_driver+0x71/0x100
[    9.400488]  bus_for_each_drv+0x9d/0x100
[    9.400509]  __device_attach+0xb0/0x1b0
[    9.400537]  device_initial_probe+0x4a/0x70
[    9.400558]  bus_probe_device+0x3c/0xb0
[    9.400579]  device_add+0x675/0x8a0
[    9.400599]  new_device_store+0x19b/0x2b0 [netdevsim]
[    9.400631]  kernfs_fop_write_iter+0x151/0x200
[    9.400663]  vfs_write+0x257/0x5c0
[    9.400695]  ksys_write+0x7b/0x110
[    9.400719]  do_syscall_64+0x104/0xfc0
[    9.400741]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[    9.400769] RIP: 0033:0x7f38b913808e
[    9.400793] Code: 4d 89 d8 e8 94 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
[    9.400893] RSP: 002b:00007ffee3a225b0 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[    9.400947] RAX: ffffffffffffffda RBX: 000000000000000a RCX: 00007f38b913808e
[    9.400991] RDX: 000000000000000a RSI: 000055fc92cfd420 RDI: 0000000000000006
[    9.401029] RBP: 00007ffee3a225c0 R08: 0000000000000000 R09: 0000000000000000
[    9.401073] R10: 0000000000000000 R11: 0000000000000202 R12: 00007f38b8fb0390
[    9.401116] R13: 000055fc92cfd420 R14: 0000000000000006 R15: 00007f38b8f3d0d0
[    9.401158]  </TASK>
[    9.401172] ---[ end trace 0000000000000000 ]---