[   10.755567] ------------[ cut here ]------------
[   10.755615] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: python3/863
[   10.755675] Modules linked in: netconsole netdevsim
[   10.755708] CPU: 0 UID: 0 PID: 863 Comm: python3 Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[   10.755759] Tainted: [W]=WARN
[   10.755786] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   10.755827] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[   10.755864] 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
[   10.755962] RSP: 0018:ff56fe98c08439d0 EFLAGS: 00010286
[   10.755994] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   10.756036] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff355f76031bf100
[   10.756085] RBP: 0000000000000000 R08: ff355f7602facfd0 R09: ff355f760c147030
[   10.756127] R10: ff355f7602eb2118 R11: fefefefefefefeff R12: 0000000000000000
[   10.756171] R13: 0000000000000010 R14: ff355f7602eb2000 R15: ff355f76031bf100
[   10.756216] FS:  00007fda63273400(0000) GS:ff355f76b4855000(0000) knlGS:0000000000000000
[   10.756265] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   10.756304] CR2: 00007fda62943050 CR3: 0000000008907005 CR4: 0000000000771ef0
[   10.756347] PKRU: 55555554
[   10.756362] Call Trace:
[   10.756382]  <TASK>
[   10.756401]  rtmsg_ifinfo+0x3c/0xa0
[   10.756422]  register_netdevice+0x8e1/0xa70
[   10.756445]  nsim_create+0x319/0x410 [netdevsim]
[   10.756476]  __nsim_dev_port_add+0x1cc/0x420 [netdevsim]
[   10.756502]  nsim_drv_probe+0x655/0x750 [netdevsim]
[   10.756533]  really_probe+0xc9/0x290
[   10.756559]  ? driver_probe_device+0xe0/0xe0
[   10.756589]  __driver_probe_device+0x8d/0x160
[   10.756620]  driver_probe_device+0x1f/0xe0
[   10.756641]  __device_attach_driver+0x71/0x100
[   10.756672]  bus_for_each_drv+0x9d/0x100
[   10.756701]  __device_attach+0xb0/0x1b0
[   10.756722]  device_initial_probe+0x4a/0x70
[   10.756743]  bus_probe_device+0x3c/0xb0
[   10.756764]  device_add+0x675/0x8a0
[   10.756787]  new_device_store+0x19b/0x2b0 [netdevsim]
[   10.756814]  kernfs_fop_write_iter+0x151/0x200
[   10.756844]  vfs_write+0x257/0x5c0
[   10.756876]  ksys_write+0x7b/0x110
[   10.756899]  do_syscall_64+0x104/0xfc0
[   10.756925]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[   10.756957] RIP: 0033:0x7fda633fb08e
[   10.756980] 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
[   10.757077] RSP: 002b:00007ffde56ee230 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   10.757119] RAX: ffffffffffffffda RBX: 0000000000000009 RCX: 00007fda633fb08e
[   10.757165] RDX: 0000000000000009 RSI: 000055eb6fb3e160 RDI: 0000000000000006
[   10.757206] RBP: 00007ffde56ee240 R08: 0000000000000000 R09: 0000000000000000
[   10.757256] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fda63273390
[   10.757297] R13: 000055eb6fb3e160 R14: 0000000000000006 R15: 00007fda632010d0
[   10.757343]  </TASK>
[   10.757360] ---[ end trace 0000000000000000 ]---