[    5.064749] ------------[ cut here ]------------
[    5.064797] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: python3/398
[    5.064855] Modules linked in: netdevsim
[    5.064877] CPU: 0 UID: 0 PID: 398 Comm: python3 Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[    5.064939] Tainted: [W]=WARN
[    5.064961] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    5.064996] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[    5.065023] 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
[    5.065118] RSP: 0018:ff6cb9f64061f9d0 EFLAGS: 00010286
[    5.065154] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[    5.065196] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff14172a830d7d00
[    5.065241] RBP: 0000000000000000 R08: ff14172a81949bd0 R09: ff14172a8113e030
[    5.065281] R10: ff14172a8198a118 R11: fefefefefefefeff R12: 0000000000000000
[    5.065325] R13: 0000000000000010 R14: ff14172a8198a000 R15: ff14172a830d7d00
[    5.065363] FS:  00007fae2d79b400(0000) GS:ff14172b39455000(0000) knlGS:0000000000000000
[    5.065405] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    5.065439] CR2: 00007fae2cef4024 CR3: 0000000008b93003 CR4: 0000000000771ef0
[    5.065480] PKRU: 55555554
[    5.065498] Call Trace:
[    5.065515]  <TASK>
[    5.065529]  rtmsg_ifinfo+0x3c/0xa0
[    5.065552]  register_netdevice+0x8e1/0xa70
[    5.065580]  nsim_create+0x319/0x410 [netdevsim]
[    5.065607]  __nsim_dev_port_add+0x1cc/0x420 [netdevsim]
[    5.065639]  nsim_drv_probe+0x655/0x750 [netdevsim]
[    5.065664]  really_probe+0xc9/0x290
[    5.065690]  ? driver_probe_device+0xe0/0xe0
[    5.065719]  __driver_probe_device+0x8d/0x160
[    5.065749]  driver_probe_device+0x1f/0xe0
[    5.065771]  __device_attach_driver+0x71/0x100
[    5.065804]  bus_for_each_drv+0x9d/0x100
[    5.065827]  __device_attach+0xb0/0x1b0
[    5.065850]  device_initial_probe+0x4a/0x70
[    5.065872]  bus_probe_device+0x3c/0xb0
[    5.065892]  device_add+0x675/0x8a0
[    5.065919]  new_device_store+0x19b/0x2b0 [netdevsim]
[    5.065950]  kernfs_fop_write_iter+0x151/0x200
[    5.065982]  vfs_write+0x257/0x5c0
[    5.066011]  ksys_write+0x7b/0x110
[    5.066035]  do_syscall_64+0x104/0xfc0
[    5.066059]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[    5.066090] RIP: 0033:0x7fae2d92308e
[    5.066114] 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
[    5.066218] RSP: 002b:00007ffdc417f450 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[    5.066258] RAX: ffffffffffffffda RBX: 0000000000000009 RCX: 00007fae2d92308e
[    5.066303] RDX: 0000000000000009 RSI: 0000563fd65f5160 RDI: 0000000000000006
[    5.066343] RBP: 00007ffdc417f460 R08: 0000000000000000 R09: 0000000000000000
[    5.066384] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fae2d79b390
[    5.066429] R13: 0000563fd65f5160 R14: 0000000000000006 R15: 00007fae2d7290d0
[    5.066470]  </TASK>
[    5.066482] ---[ end trace 0000000000000000 ]---