[    3.167662] ------------[ cut here ]------------
[    3.167725] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: python3/227
[    3.167791] Modules linked in: netdevsim
[    3.167816] CPU: 3 UID: 0 PID: 227 Comm: python3 Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[    3.167875] Tainted: [W]=WARN
[    3.167897] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    3.167934] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[    3.167966] 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
[    3.168065] RSP: 0018:ff56fe98c03679d0 EFLAGS: 00010286
[    3.168091] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[    3.168129] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff355f76032cdc00
[    3.168174] RBP: 0000000000000000 R08: ff355f7603008b10 R09: ff355f7606048030
[    3.168215] R10: ff355f7606040118 R11: fefefefefefefeff R12: 0000000000000000
[    3.168256] R13: 0000000000000010 R14: ff355f7606040000 R15: ff355f76032cdc00
[    3.168304] FS:  00007f187a96d400(0000) GS:ff355f76b49d5000(0000) knlGS:0000000000000000
[    3.168354] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    3.168391] CR2: 00007f1879d26010 CR3: 0000000002f6f001 CR4: 0000000000771ef0
[    3.168432] PKRU: 55555554
[    3.168448] Call Trace:
[    3.168464]  <TASK>
[    3.168481]  rtmsg_ifinfo+0x3c/0xa0
[    3.168503]  register_netdevice+0x8e1/0xa70
[    3.168526]  nsim_create+0x319/0x410 [netdevsim]
[    3.168560]  __nsim_dev_port_add+0x1cc/0x420 [netdevsim]
[    3.168585]  nsim_drv_probe+0x655/0x750 [netdevsim]
[    3.168615]  really_probe+0xc9/0x290
[    3.168639]  ? driver_probe_device+0xe0/0xe0
[    3.168666]  __driver_probe_device+0x8d/0x160
[    3.168694]  driver_probe_device+0x1f/0xe0
[    3.168716]  __device_attach_driver+0x71/0x100
[    3.168747]  bus_for_each_drv+0x9d/0x100
[    3.168770]  __device_attach+0xb0/0x1b0
[    3.168791]  device_initial_probe+0x4a/0x70
[    3.168812]  bus_probe_device+0x3c/0xb0
[    3.168830]  device_add+0x675/0x8a0
[    3.168854]  new_device_store+0x19b/0x2b0 [netdevsim]
[    3.168883]  kernfs_fop_write_iter+0x151/0x200
[    3.168917]  vfs_write+0x257/0x5c0
[    3.168950]  ksys_write+0x7b/0x110
[    3.168969]  do_syscall_64+0x104/0xfc0
[    3.168994]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[    3.169020] RIP: 0033:0x7f187aaf508e
[    3.169043] 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
[    3.169139] RSP: 002b:00007fffcfa5b840 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[    3.169206] RAX: ffffffffffffffda RBX: 000000000000000b RCX: 00007f187aaf508e
[    3.169246] RDX: 000000000000000b RSI: 000055c50b116360 RDI: 0000000000000009
[    3.169288] RBP: 00007fffcfa5b850 R08: 0000000000000000 R09: 0000000000000000
[    3.169326] R10: 0000000000000000 R11: 0000000000000202 R12: 00007f187a96d390
[    3.169364] R13: 000055c50b116360 R14: 0000000000000009 R15: 00007f187a8f90d0
[    3.169408]  </TASK>
[    3.169423] ---[ end trace 0000000000000000 ]---