[   47.891516] ------------[ cut here ]------------
[   47.891616] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#2: unshare/204
[   47.891726] Modules linked in:
[   47.891789] CPU: 2 UID: 0 PID: 204 Comm: unshare Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[   47.891891] Tainted: [W]=WARN
[   47.891950] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   47.892023] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[   47.892091] Code: 80 00 00 00 e8 59 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 b2 fb ff b9 a6 ff ff
[   47.892231] RSP: 0018:ff5eed034041fcc8 EFLAGS: 00010286
[   47.892298] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   47.892385] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff1d22b3c1d7b100
[   47.892465] RBP: 0000000000000000 R08: ff1d22b3c31853d0 R09: ff1d22b3c19c502c
[   47.892546] R10: ff1d22b3c2028118 R11: fefefefefefefeff R12: 0000000000000000
[   47.892629] R13: 0000000000000010 R14: ff1d22b3c2028000 R15: ff1d22b3c1d7b100
[   47.892720] FS:  00007fb79f241740(0000) GS:ff1d22b468396000(0000) knlGS:0000000000000000
[   47.892804] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   47.892878] CR2: 00007fb79f403280 CR3: 000000000190c006 CR4: 0000000000771ef0
[   47.892960] PKRU: 55555554
[   47.893012] Call Trace:
[   47.893065]  <TASK>
[   47.893118]  rtmsg_ifinfo+0x3c/0xa0
[   47.893179]  register_netdevice+0x889/0x9f0
[   47.893241]  register_netdev+0x1e/0x30
[   47.893301]  loopback_net_init+0x57/0xb0
[   47.893372]  ? vsock_sysctl_init_net+0xb6/0x140
[   47.893443]  ops_init+0x68/0x140
[   47.893505]  setup_net+0x85/0x150
[   47.893566]  copy_net_ns+0xf5/0x200
[   47.893629]  create_new_namespaces+0x117/0x2f0
[   47.893708]  unshare_nsproxy_namespaces+0x85/0xb0
[   47.893778]  ksys_unshare+0x346/0x5e0
[   47.893842]  __x64_sys_unshare+0x12/0x20
[   47.893903]  do_syscall_64+0x104/0xfc0
[   47.893966]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[   47.894034] RIP: 0033:0x7fb79f33cbcb
[   47.894095] Code: 73 01 c3 48 8b 0d 2d 82 0f 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d fd 81 0f 00 f7 d8 64 89 01 48
[   47.894237] RSP: 002b:00007ffd0cb1d768 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
[   47.894319] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fb79f33cbcb
[   47.894410] RDX: 0000000000000000 RSI: 00007ffd0cb1d4d0 RDI: 0000000040000000
[   47.894493] RBP: 00007ffd0cb1daf0 R08: 00007ffd0cb1d6c0 R09: 0000000000000000
[   47.894574] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000040000000
[   47.894656] R13: 0000000000000000 R14: 00000000ffffffff R15: 0000561f89929b68
[   47.894747]  </TASK>
[   47.894800] ---[ end trace 0000000000000000 ]---
[   47.895634] ------------[ cut here ]------------
[   47.895724] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#2: packetdrill/204
[   47.895832] Modules linked in:
[   47.895892] CPU: 2 UID: 0 PID: 204 Comm: packetdrill Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[   47.895990] Tainted: [W]=WARN
[   47.896050] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   47.896123] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[   47.896192] Code: 80 00 00 00 e8 59 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 b2 fb ff b9 a6 ff ff
[   47.896332] RSP: 0018:ff5eed034041fd68 EFLAGS: 00010286
[   47.896476] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   47.896557] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff1d22b3c1d7b100
[   47.896640] RBP: 0000000000000000 R08: ff1d22b3c306c6d0 R09: ff1d22b3c46e3030
[   47.896731] R10: ff1d22b3c4528118 R11: fefefefefefefeff R12: 0000000000000000
[   47.896815] R13: 0000000000000010 R14: ff1d22b3c4528000 R15: ff1d22b3c1d7b100
[   47.896904] FS:  000000003c4f6400(0000) GS:ff1d22b468396000(0000) knlGS:0000000000000000
[   47.896989] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   47.897064] CR2: 00007f60fcbf5000 CR3: 0000000001925001 CR4: 0000000000771ef0
[   47.897149] PKRU: 55555554
[   47.897201] Call Trace:
[   47.897254]  <TASK>
[   47.897307]  rtmsg_ifinfo+0x3c/0xa0
[   47.897375]  register_netdevice+0x889/0x9f0
[   47.897438]  __tun_chr_ioctl+0x83c/0x16c0
[   47.897502]  ? do_sys_openat2+0x9a/0xe0
[   47.897565]  __x64_sys_ioctl+0xa1/0xe0
[   47.897630]  do_syscall_64+0x104/0xfc0
[   47.897699]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[   47.897768] RIP: 0033:0x47cc8d
[   47.897829] Code: 04 25 28 00 00 00 48 89 45 c8 31 c0 48 8d 45 10 c7 45 b0 10 00 00 00 48 89 45 b8 48 8d 45 d0 48 89 45 c0 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1a 48 8b 45 c8 64 48 2b 04 25 28 00 00 00
[   47.897967] RSP: 002b:00007ffcd7bbce30 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   47.898048] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[   47.898129] RDX: 00007ffcd7bbceb0 RSI: 00000000400454ca RDI: 0000000000000005
[   47.898210] RBP: 00007ffcd7bbce80 R08: 0000000000000000 R09: 0000000000000000
[   47.898294] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcd7bbd388
[   47.898384] R13: 00007ffcd7bbd408 R14: 0000000000000002 R15: 0000000000543540
[   47.898493]  </TASK>
[   47.898547] ---[ end trace 0000000000000000 ]---
[   47.898664] ------------[ cut here ]------------
[   47.898744] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#2: packetdrill/204
[   47.898845] Modules linked in:
[   47.898906] CPU: 2 UID: 0 PID: 204 Comm: packetdrill Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[   47.899005] Tainted: [W]=WARN
[   47.899063] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   47.899138] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[   47.899206] Code: 80 00 00 00 e8 59 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 b2 fb ff b9 a6 ff ff
[   47.899349] RSP: 0018:ff5eed034041fd60 EFLAGS: 00010286
[   47.899423] RAX: 00000000ffffffa6 RBX: 0000000000000000 RCX: 0000000000000000
[   47.899505] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff1d22b3c1d7b100
[   47.899587] RBP: 0000000000000002 R08: ff1d22b3c306c6d0 R09: ff1d22b3c46e3030
[   47.899671] R10: ff1d22b3c4528118 R11: fefefefefefefeff R12: 0000000000000000
[   47.899756] R13: 0000000000000010 R14: ff1d22b3c4528000 R15: ff1d22b3c1d7b100
[   47.899841] FS:  000000003c4f6400(0000) GS:ff1d22b468396000(0000) knlGS:0000000000000000
[   47.899923] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   47.899998] CR2: 00007f60fcbf5000 CR3: 0000000001925001 CR4: 0000000000771ef0
[   47.900082] PKRU: 55555554
[   47.900134] Call Trace:
[   47.900187]  <TASK>
[   47.900239]  rtnetlink_event+0x6e/0xb0
[   47.900301]  notifier_call_chain+0x6d/0x100
[   47.900371]  netdev_update_features+0x56/0x60
[   47.900442]  __tun_chr_ioctl+0xbf1/0x16c0
[   47.900505]  ? file_init_path+0x62/0x120
[   47.900567]  __x64_sys_ioctl+0xa1/0xe0
[   47.900630]  do_syscall_64+0x104/0xfc0
[   47.900699]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[   47.900769] RIP: 0033:0x47cc8d
[   47.900830] Code: 04 25 28 00 00 00 48 89 45 c8 31 c0 48 8d 45 10 c7 45 b0 10 00 00 00 48 89 45 b8 48 8d 45 d0 48 89 45 c0 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1a 48 8b 45 c8 64 48 2b 04 25 28 00 00 00
[   47.900972] RSP: 002b:00007ffcd7bbce70 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   47.901053] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[   47.901135] RDX: 000000000000000f RSI: 00000000400454d0 RDI: 0000000000000005
[   47.901217] RBP: 00007ffcd7bbcec0 R08: 0000000000000000 R09: 0000000000000000
[   47.901297] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcd7bbd388
[   47.901384] R13: 00007ffcd7bbd408 R14: 0000000000000002 R15: 0000000000543540
[   47.901468]  </TASK>
[   47.901520] ---[ end trace 0000000000000000 ]---
[   47.901612] ------------[ cut here ]------------
[   47.901686] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#2: packetdrill/204
[   47.901778] Modules linked in:
[   47.901838] CPU: 2 UID: 0 PID: 204 Comm: packetdrill Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[   47.901950] Tainted: [W]=WARN
[   47.902025] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   47.902101] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[   47.902171] Code: 80 00 00 00 e8 59 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 b2 fb ff b9 a6 ff ff
[   47.902316] RSP: 0018:ff5eed034041fc10 EFLAGS: 00010286
[   47.902390] RAX: 00000000ffffffa6 RBX: 0000000000000001 RCX: 0000000000000000
[   47.903219] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff1d22b3c1d7b100
[   47.903304] RBP: 0000000000000000 R08: ff1d22b3c306c6d0 R09: ff1d22b3c46e6030
[   47.903393] R10: ff1d22b3c4528118 R11: fefefefefefefeff R12: 0000000000000000
[   47.903476] R13: 0000000000000010 R14: ff1d22b3c4528000 R15: ff1d22b3c1d7b100
[   47.903562] FS:  000000003c4f6400(0000) GS:ff1d22b468396000(0000) knlGS:0000000000000000
[   47.903647] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   47.903729] CR2: 00007f60fcbf5000 CR3: 0000000001925001 CR4: 0000000000771ef0
[   47.903829] PKRU: 55555554
[   47.903879] Call Trace:
[   47.903932]  <TASK>
[   47.903984]  rtmsg_ifinfo+0x3c/0xa0
[   47.904045]  __dev_notify_flags+0xb1/0xf0
[   47.904108]  netif_change_flags+0x54/0x70
[   47.904169]  dev_change_flags+0x45/0x80
[   47.904235]  devinet_ioctl+0x607/0x7f0
[   47.904298]  inet_ioctl+0x229/0x240
[   47.904366]  ? __rtnl_unlock+0x35/0x60
[   47.904430]  sock_do_ioctl+0x75/0x140
[   47.904493]  __x64_sys_ioctl+0xa1/0xe0
[   47.904554]  do_syscall_64+0x104/0xfc0
[   47.904616]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[   47.904691] RIP: 0033:0x47cc8d
[   47.904753] Code: 04 25 28 00 00 00 48 89 45 c8 31 c0 48 8d 45 10 c7 45 b0 10 00 00 00 48 89 45 b8 48 8d 45 d0 48 89 45 c0 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1a 48 8b 45 c8 64 48 2b 04 25 28 00 00 00
[   47.904897] RSP: 002b:00007ffcd7bbce50 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   47.904979] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[   47.905061] RDX: 00007ffcd7bbcec0 RSI: 0000000000008914 RDI: 0000000000000006
[   47.905143] RBP: 00007ffcd7bbcea0 R08: 0000000000000000 R09: 0000000000000000
[   47.905225] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcd7bbd388
[   47.905306] R13: 00007ffcd7bbd408 R14: 0000000000000002 R15: 0000000000543540
[   47.905392]  </TASK>
[   47.905444] ---[ end trace 0000000000000000 ]---
[   92.874619] ------------[ cut here ]------------
[   92.874739] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#2: packetdrill/204
[   92.874877] Modules linked in:
[   92.874939] CPU: 2 UID: 0 PID: 204 Comm: packetdrill Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[   92.875034] Tainted: [W]=WARN
[   92.875092] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   92.875165] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[   92.875238] Code: 80 00 00 00 e8 59 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 b2 fb ff b9 a6 ff ff
[   92.875375] RSP: 0018:ff5eed034041fb58 EFLAGS: 00010286
[   92.875440] RAX: 00000000ffffffa6 RBX: 0000000000000041 RCX: 0000000000000000
[   92.875524] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff1d22b3c1d7b500
[   92.875613] RBP: 0000000000000000 R08: ff1d22b3c306c6d0 R09: ff1d22b3c46e6030
[   92.875890] R10: ff1d22b3c4528118 R11: fefefefefefefeff R12: 0000000000000000
[   92.875979] R13: 0000000000000010 R14: ff1d22b3c4528000 R15: ff1d22b3c1d7b500
[   92.876064] FS:  0000000000000000(0000) GS:ff1d22b468396000(0000) knlGS:0000000000000000
[   92.876146] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   92.876217] CR2: 00007f60fcbf5000 CR3: 0000000011842004 CR4: 0000000000771ef0
[   92.876299] PKRU: 55555554
[   92.876349] Call Trace:
[   92.876401]  <TASK>
[   92.876453]  rtmsg_ifinfo+0x3c/0xa0
[   92.876514]  netif_close_many+0xed/0x190
[   92.876583]  unregister_netdevice_many_notify+0x267/0x9d0
[   92.876650]  ? __queue_work+0x141/0x550
[   92.876720]  unregister_netdevice_queue+0x9e/0xd0
[   92.876787]  __tun_detach+0x591/0x5b0
[   92.876850]  tun_chr_close+0x3f/0xc0
[   92.876909]  __fput+0xe8/0x2c0
[   92.876972]  task_work_run+0x63/0xa0
[   92.877033]  do_exit+0x2c1/0xba0
[   92.877094]  ? __x64_sys_close+0x47/0xa0
[   92.877154]  do_group_exit+0x2d/0xc0
[   92.877214]  get_signal+0x82e/0x900
[   92.877275]  ? fsnotify_grab_connector+0x4a/0x90
[   92.877344]  arch_do_signal_or_restart+0x77/0x2b0
[   92.877414]  ? __call_rcu_common.constprop.0+0x9a/0x340
[   92.877483]  ? __fput+0x17f/0x2c0
[   92.877543]  exit_to_user_mode_loop+0x75/0x4a0
[   92.877617]  do_syscall_64+0x439/0xfc0
[   92.877688]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[   92.877756] RIP: 0033:0x47fb83
[   92.877815] Code: Unable to access opcode bytes at 0x47fb59.
[   92.877888] RSP: 002b:00007ffcd7bbc920 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
[   92.877970] RAX: 0000000000000000 RBX: 00000000fffffff5 RCX: 000000000047fb83
[   92.878051] RDX: 000000000000000e RSI: e3c6814790ab0dac RDI: 0000000000000007
[   92.878130] RBP: 00007ffcd7bbce20 R08: 0000000000000041 R09: 000000003c4f73e0
[   92.878210] R10: 0000000000000040 R11: 0000000000000246 R12: 0000000000000000
[   92.878291] R13: fffffffffffffff0 R14: 0000000000000000 R15: 0000000000543540
[   92.878371]  </TASK>
[   92.878422] ---[ end trace 0000000000000000 ]---
[   92.878587] ------------[ cut here ]------------
[   92.878625] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/204
[   92.878685] Modules linked in:
[   92.878708] CPU: 3 UID: 0 PID: 204 Comm: packetdrill Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[   92.878775] Tainted: [W]=WARN
[   92.878796] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   92.878834] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[   92.878866] Code: 80 00 00 00 e8 59 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 b2 fb ff b9 a6 ff ff
[   92.878968] RSP: 0018:ff5eed034041fbc8 EFLAGS: 00010286
[   92.878996] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   92.879042] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff1d22b3c3347e00
[   92.879090] RBP: 0000000000000000 R08: ff1d22b3c306c6d0 R09: ff1d22b3c44e9830
[   92.879136] R10: ff1d22b3c4528118 R11: fefefefefefefeff R12: 0000000000000000
[   92.879180] R13: 0000000000000011 R14: ff1d22b3c4528000 R15: ff1d22b3c3347e00
[   92.879223] FS:  0000000000000000(0000) GS:ff1d22b468416000(0000) knlGS:0000000000000000
[   92.879261] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   92.879301] CR2: 00007f10ac465680 CR3: 0000000004457004 CR4: 0000000000771ef0
[   92.879349] PKRU: 55555554
[   92.879363] Call Trace:
[   92.879379]  <TASK>
[   92.879393]  unregister_netdevice_many_notify+0x877/0x9d0
[   92.879424]  unregister_netdevice_queue+0x9e/0xd0
[   92.879454]  __tun_detach+0x591/0x5b0
[   92.879478]  tun_chr_close+0x3f/0xc0
[   92.879500]  __fput+0xe8/0x2c0
[   92.879523]  task_work_run+0x63/0xa0
[   92.879547]  do_exit+0x2c1/0xba0
[   92.879573]  ? __x64_sys_close+0x47/0xa0
[   92.879600]  do_group_exit+0x2d/0xc0
[   92.879625]  get_signal+0x82e/0x900
[   92.879649]  ? fsnotify_grab_connector+0x4a/0x90
[   92.879683]  arch_do_signal_or_restart+0x77/0x2b0
[   92.879712]  ? __call_rcu_common.constprop.0+0x9a/0x340
[   92.879742]  ? __fput+0x17f/0x2c0
[   92.879764]  exit_to_user_mode_loop+0x75/0x4a0
[   92.879794]  do_syscall_64+0x439/0xfc0
[   92.879816]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[   92.879845] RIP: 0033:0x47fb83
[   92.879866] Code: Unable to access opcode bytes at 0x47fb59.
[   92.879906] RSP: 002b:00007ffcd7bbc920 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
[   92.879950] RAX: 0000000000000000 RBX: 00000000fffffff5 RCX: 000000000047fb83
[   92.879994] RDX: 000000000000000e RSI: e3c6814790ab0dac RDI: 0000000000000007
[   92.880040] RBP: 00007ffcd7bbce20 R08: 0000000000000041 R09: 000000003c4f73e0
[   92.880085] R10: 0000000000000040 R11: 0000000000000246 R12: 0000000000000000
[   92.880132] R13: fffffffffffffff0 R14: 0000000000000000 R15: 0000000000543540
[   92.880180]  </TASK>
[   92.880196] ---[ end trace 0000000000000000 ]---
[   92.886774] ------------[ cut here ]------------
[   92.886817] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: kworker/u16:1/64
[   92.886881] Modules linked in:
[   92.886908] CPU: 3 UID: 0 PID: 64 Comm: kworker/u16:1 Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[   92.886966] Tainted: [W]=WARN
[   92.886989] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   92.887028] Workqueue: netns cleanup_net
[   92.887052] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[   92.887081] Code: 80 00 00 00 e8 59 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 b2 fb ff b9 a6 ff ff
[   92.887184] RSP: 0018:ff5eed0340237c78 EFLAGS: 00010286
[   92.887215] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   92.887259] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff1d22b3c3347e00
[   92.887298] RBP: 0000000000000000 R08: ff1d22b3c31853d0 R09: ff1d22b3c46ee02c
[   92.887342] R10: ff1d22b3c2028118 R11: fefefefefefefeff R12: 0000000000000000
[   92.887390] R13: 0000000000000011 R14: ff1d22b3c2028000 R15: ff1d22b3c3347e00
[   92.887438] FS:  0000000000000000(0000) GS:ff1d22b468416000(0000) knlGS:0000000000000000
[   92.887486] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   92.887524] CR2: 000055d552b332b8 CR3: 000000000338b002 CR4: 0000000000771ef0
[   92.887573] PKRU: 55555554
[   92.887593] Call Trace:
[   92.887609]  <TASK>
[   92.887625]  unregister_netdevice_many_notify+0x877/0x9d0
[   92.887658]  default_device_exit_batch+0x318/0x390
[   92.887693]  ops_undo_list+0x10b/0x240
[   92.887713]  cleanup_net+0x1d7/0x2e0
[   92.887737]  process_one_work+0x162/0x360
[   92.887760]  worker_thread+0x16e/0x2d0
[   92.887783]  ? rescuer_thread+0x510/0x510
[   92.887806]  kthread+0xe1/0x120
[   92.887829]  ? kthread_park+0xa0/0xa0
[   92.887850]  ret_from_fork+0x16d/0x250
[   92.887873]  ? kthread_park+0xa0/0xa0
[   92.887896]  ret_from_fork_asm+0x11/0x20
[   92.887919]  </TASK>
[   92.887933] ---[ end trace 0000000000000000 ]---