[   93.190179] ------------[ cut here ]------------
[   93.190222] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: unshare/249
[   93.190288] Modules linked in:
[   93.190315] CPU: 3 UID: 0 PID: 249 Comm: unshare Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[   93.190377] Tainted: [W]=WARN
[   93.190398] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   93.190440] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[   93.190477] 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
[   93.190564] RSP: 0018:ff71d8c6804d7cc8 EFLAGS: 00010286
[   93.190596] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   93.190637] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff3cc9a4c2b76d00
[   93.190682] RBP: 0000000000000000 R08: ff3cc9a4c2fcc710 R09: ff3cc9a4c19bc02c
[   93.190721] R10: ff3cc9a4c19be118 R11: fefefefefefefeff R12: 0000000000000000
[   93.190769] R13: 0000000000000010 R14: ff3cc9a4c19be000 R15: ff3cc9a4c2b76d00
[   93.190810] FS:  00007f83c86b1740(0000) GS:ff3cc9a546016000(0000) knlGS:0000000000000000
[   93.190854] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   93.190890] CR2: 00007f83c8873280 CR3: 0000000004d7c006 CR4: 0000000000771ef0
[   93.190937] PKRU: 55555554
[   93.190956] Call Trace:
[   93.190971]  <TASK>
[   93.190988]  rtmsg_ifinfo+0x3c/0xa0
[   93.191013]  register_netdevice+0x889/0x9f0
[   93.191039]  register_netdev+0x1e/0x30
[   93.191058]  loopback_net_init+0x57/0xb0
[   93.191086]  ? vsock_sysctl_init_net+0xb6/0x140
[   93.191124]  ops_init+0x68/0x140
[   93.191143]  setup_net+0x85/0x150
[   93.191167]  copy_net_ns+0xf5/0x200
[   93.191191]  create_new_namespaces+0x117/0x2f0
[   93.191220]  unshare_nsproxy_namespaces+0x85/0xb0
[   93.191247]  ksys_unshare+0x346/0x5e0
[   93.191272]  __x64_sys_unshare+0x12/0x20
[   93.191297]  do_syscall_64+0x104/0xfc0
[   93.191320]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[   93.191344] RIP: 0033:0x7f83c87acbcb
[   93.191364] 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
[   93.191462] RSP: 002b:00007ffd52ccbaa8 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
[   93.191507] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f83c87acbcb
[   93.191546] RDX: 0000000000000000 RSI: 00007ffd52ccb810 RDI: 0000000040000000
[   93.191592] RBP: 00007ffd52ccbe30 R08: 00007ffd52ccba00 R09: 0000000000000000
[   93.191641] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000040000000
[   93.191682] R13: 0000000000000000 R14: 00000000ffffffff R15: 000055d7c15feb68
[   93.191723]  </TASK>
[   93.191741] ---[ end trace 0000000000000000 ]---
[   93.192325] ------------[ cut here ]------------
[   93.192354] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/249
[   93.192403] Modules linked in:
[   93.192425] CPU: 3 UID: 0 PID: 249 Comm: packetdrill Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[   93.192482] Tainted: [W]=WARN
[   93.192503] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   93.192535] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[   93.192560] 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
[   93.192657] RSP: 0018:ff71d8c6804d7d68 EFLAGS: 00010286
[   93.192686] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   93.192729] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff3cc9a4c2b76d00
[   93.192778] RBP: 0000000000000000 R08: ff3cc9a4c19344d0 R09: ff3cc9a4c2e5c030
[   93.192826] R10: ff3cc9a4c4e40118 R11: fefefefefefefeff R12: 0000000000000000
[   93.192867] R13: 0000000000000010 R14: ff3cc9a4c4e40000 R15: ff3cc9a4c2b76d00
[   93.192915] FS:  000000000a7b1400(0000) GS:ff3cc9a546016000(0000) knlGS:0000000000000000
[   93.192962] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   93.192991] CR2: 00007fc7d5d9f000 CR3: 0000000001960001 CR4: 0000000000771ef0
[   93.193046] PKRU: 55555554
[   93.193063] Call Trace:
[   93.193076]  <TASK>
[   93.193093]  rtmsg_ifinfo+0x3c/0xa0
[   93.193122]  register_netdevice+0x889/0x9f0
[   93.193146]  __tun_chr_ioctl+0x83c/0x16c0
[   93.193172]  ? do_sys_openat2+0x9a/0xe0
[   93.193191]  __x64_sys_ioctl+0xa1/0xe0
[   93.193214]  do_syscall_64+0x104/0xfc0
[   93.193239]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[   93.193269] RIP: 0033:0x47cc8d
[   93.193297] 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
[   93.193398] RSP: 002b:00007ffe3e25c040 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   93.193439] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[   93.193489] RDX: 00007ffe3e25c0c0 RSI: 00000000400454ca RDI: 0000000000000005
[   93.193535] RBP: 00007ffe3e25c090 R08: 0000000000000000 R09: 0000000000000000
[   93.193583] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe3e25c598
[   93.193635] R13: 00007ffe3e25c618 R14: 0000000000000002 R15: 0000000000543540
[   93.193681]  </TASK>
[   93.193694] ---[ end trace 0000000000000000 ]---
[   93.193732] ------------[ cut here ]------------
[   93.193763] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/249
[   93.193815] Modules linked in:
[   93.193837] CPU: 3 UID: 0 PID: 249 Comm: packetdrill Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[   93.193894] Tainted: [W]=WARN
[   93.193918] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   93.193958] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[   93.193987] 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
[   93.194084] RSP: 0018:ff71d8c6804d7d60 EFLAGS: 00010286
[   93.194112] RAX: 00000000ffffffa6 RBX: 0000000000000000 RCX: 0000000000000000
[   93.194158] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff3cc9a4c2b76d00
[   93.194198] RBP: 0000000000000002 R08: ff3cc9a4c19344d0 R09: ff3cc9a4c2e5c030
[   93.194243] R10: ff3cc9a4c4e40118 R11: fefefefefefefeff R12: 0000000000000000
[   93.194282] R13: 0000000000000010 R14: ff3cc9a4c4e40000 R15: ff3cc9a4c2b76d00
[   93.194327] FS:  000000000a7b1400(0000) GS:ff3cc9a546016000(0000) knlGS:0000000000000000
[   93.194368] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   93.194406] CR2: 00007fc7d5d9f000 CR3: 0000000001960001 CR4: 0000000000771ef0
[   93.194452] PKRU: 55555554
[   93.194466] Call Trace:
[   93.194479]  <TASK>
[   93.194493]  rtnetlink_event+0x6e/0xb0
[   93.194517]  notifier_call_chain+0x6d/0x100
[   93.194538]  netdev_update_features+0x56/0x60
[   93.194568]  __tun_chr_ioctl+0xbf1/0x16c0
[   93.194591]  ? file_init_path+0x62/0x120
[   93.194615]  __x64_sys_ioctl+0xa1/0xe0
[   93.194638]  do_syscall_64+0x104/0xfc0
[   93.194660]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[   93.194688] RIP: 0033:0x47cc8d
[   93.194710] 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
[   93.194815] RSP: 002b:00007ffe3e25c080 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   93.194859] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[   93.194901] RDX: 000000000000000f RSI: 00000000400454d0 RDI: 0000000000000005
[   93.194944] RBP: 00007ffe3e25c0d0 R08: 0000000000000000 R09: 0000000000000000
[   93.194987] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe3e25c598
[   93.195033] R13: 00007ffe3e25c618 R14: 0000000000000002 R15: 0000000000543540
[   93.195072]  </TASK>
[   93.195089] ---[ end trace 0000000000000000 ]---
[   93.195128] ------------[ cut here ]------------
[   93.195159] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/249
[   93.195213] Modules linked in:
[   93.195234] CPU: 3 UID: 0 PID: 249 Comm: packetdrill Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[   93.195293] Tainted: [W]=WARN
[   93.195315] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   93.195348] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[   93.195380] 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
[   93.195489] RSP: 0018:ff71d8c6804d7c10 EFLAGS: 00010286
[   93.195518] RAX: 00000000ffffffa6 RBX: 0000000000000001 RCX: 0000000000000000
[   93.195563] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff3cc9a4c2b76d00
[   93.195625] RBP: 0000000000000000 R08: ff3cc9a4c19344d0 R09: ff3cc9a4c4c45030
[   93.195675] R10: ff3cc9a4c4e40118 R11: fefefefefefefeff R12: 0000000000000000
[   93.195730] R13: 0000000000000010 R14: ff3cc9a4c4e40000 R15: ff3cc9a4c2b76d00
[   93.195796] FS:  000000000a7b1400(0000) GS:ff3cc9a546016000(0000) knlGS:0000000000000000
[   93.195841] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   93.195895] CR2: 00007fc7d5d9f000 CR3: 0000000001960001 CR4: 0000000000771ef0
[   93.195933] PKRU: 55555554
[   93.195951] Call Trace:
[   93.195964]  <TASK>
[   93.195975]  rtmsg_ifinfo+0x3c/0xa0
[   93.196002]  __dev_notify_flags+0xb1/0xf0
[   93.196030]  netif_change_flags+0x54/0x70
[   93.196054]  dev_change_flags+0x45/0x80
[   93.196077]  devinet_ioctl+0x607/0x7f0
[   93.196098]  inet_ioctl+0x229/0x240
[   93.196127]  ? __rtnl_unlock+0x35/0x60
[   93.196146]  sock_do_ioctl+0x75/0x140
[   93.196186]  __x64_sys_ioctl+0xa1/0xe0
[   93.196208]  do_syscall_64+0x104/0xfc0
[   93.196230]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[   93.196256] RIP: 0033:0x47cc8d
[   93.196289] 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
[   93.196405] RSP: 002b:00007ffe3e25c060 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   93.196452] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[   93.196484] RDX: 00007ffe3e25c0d0 RSI: 0000000000008914 RDI: 0000000000000006
[   93.196516] RBP: 00007ffe3e25c0b0 R08: 0000000000000000 R09: 0000000000000000
[   93.196560] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe3e25c598
[   93.196616] R13: 00007ffe3e25c618 R14: 0000000000000002 R15: 0000000000543540
[   93.196673]  </TASK>
[   93.196697] ---[ end trace 0000000000000000 ]---
[  138.179174] ------------[ cut here ]------------
[  138.179245] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/249
[  138.179295] Modules linked in:
[  138.179325] CPU: 3 UID: 0 PID: 249 Comm: packetdrill Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[  138.179384] Tainted: [W]=WARN
[  138.179401] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  138.179437] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[  138.179469] 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
[  138.179575] RSP: 0018:ff71d8c6804d7b58 EFLAGS: 00010286
[  138.179600] RAX: 00000000ffffffa6 RBX: 0000000000000041 RCX: 0000000000000000
[  138.179641] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff3cc9a4c2b5d100
[  138.179684] RBP: 0000000000000000 R08: ff3cc9a4c19344d0 R09: ff3cc9a4c4c45030
[  138.179726] R10: ff3cc9a4c4e40118 R11: fefefefefefefeff R12: 0000000000000000
[  138.179768] R13: 0000000000000010 R14: ff3cc9a4c4e40000 R15: ff3cc9a4c2b5d100
[  138.179816] FS:  0000000000000000(0000) GS:ff3cc9a546016000(0000) knlGS:0000000000000000
[  138.179858] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  138.179894] CR2: 00007fc7d5d9f000 CR3: 0000000013a42004 CR4: 0000000000771ef0
[  138.179945] PKRU: 55555554
[  138.179961] Call Trace:
[  138.179977]  <TASK>
[  138.179993]  rtmsg_ifinfo+0x3c/0xa0
[  138.180017]  netif_close_many+0xed/0x190
[  138.180043]  unregister_netdevice_many_notify+0x267/0x9d0
[  138.180067]  ? __queue_work+0x141/0x550
[  138.180093]  unregister_netdevice_queue+0x9e/0xd0
[  138.180123]  __tun_detach+0x591/0x5b0
[  138.180149]  tun_chr_close+0x3f/0xc0
[  138.180171]  __fput+0xe8/0x2c0
[  138.180195]  task_work_run+0x63/0xa0
[  138.180218]  do_exit+0x2c1/0xba0
[  138.180240]  ? __x64_sys_close+0x47/0xa0
[  138.180264]  do_group_exit+0x2d/0xc0
[  138.180286]  get_signal+0x82e/0x900
[  138.180307]  ? fsnotify_grab_connector+0x4a/0x90
[  138.180338]  arch_do_signal_or_restart+0x77/0x2b0
[  138.180373]  ? __call_rcu_common.constprop.0+0x9a/0x340
[  138.180403]  ? __fput+0x17f/0x2c0
[  138.180426]  exit_to_user_mode_loop+0x75/0x4a0
[  138.180457]  do_syscall_64+0x439/0xfc0
[  138.180482]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[  138.180514] RIP: 0033:0x47fb83
[  138.180543] Code: Unable to access opcode bytes at 0x47fb59.
[  138.180576] RSP: 002b:00007ffe3e25bb30 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
[  138.180621] RAX: 0000000000000000 RBX: 00000000fffffff5 RCX: 000000000047fb83
[  138.180663] RDX: 000000000000000e RSI: 116af875bd0e30e9 RDI: 0000000000000007
[  138.180709] RBP: 00007ffe3e25c030 R08: 0000000000000041 R09: 000000000a7b23e0
[  138.180752] R10: 0000000000000040 R11: 0000000000000246 R12: 0000000000000000
[  138.180795] R13: fffffffffffffff0 R14: 0000000000000000 R15: 0000000000543540
[  138.180839]  </TASK>
[  138.180853] ---[ end trace 0000000000000000 ]---
[  138.181116] ------------[ cut here ]------------
[  138.181148] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/249
[  138.181206] Modules linked in:
[  138.181231] CPU: 3 UID: 0 PID: 249 Comm: packetdrill Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[  138.181289] Tainted: [W]=WARN
[  138.181307] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  138.181341] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[  138.181370] 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
[  138.181468] RSP: 0018:ff71d8c6804d7bc8 EFLAGS: 00010286
[  138.181498] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[  138.181539] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff3cc9a4c2b5d100
[  138.181575] RBP: 0000000000000000 R08: ff3cc9a4c19344d0 R09: ff3cc9a4c62da830
[  138.181617] R10: ff3cc9a4c4e40118 R11: fefefefefefefeff R12: 0000000000000000
[  138.181660] R13: 0000000000000011 R14: ff3cc9a4c4e40000 R15: ff3cc9a4c2b5d100
[  138.181708] FS:  0000000000000000(0000) GS:ff3cc9a546016000(0000) knlGS:0000000000000000
[  138.181750] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  138.181786] CR2: 00007fc7d5d9f000 CR3: 0000000013a42004 CR4: 0000000000771ef0
[  138.181830] PKRU: 55555554
[  138.181844] Call Trace:
[  138.181859]  <TASK>
[  138.181874]  unregister_netdevice_many_notify+0x877/0x9d0
[  138.181904]  unregister_netdevice_queue+0x9e/0xd0
[  138.181939]  __tun_detach+0x591/0x5b0
[  138.181967]  tun_chr_close+0x3f/0xc0
[  138.181990]  __fput+0xe8/0x2c0
[  138.182012]  task_work_run+0x63/0xa0
[  138.182036]  do_exit+0x2c1/0xba0
[  138.182060]  ? __x64_sys_close+0x47/0xa0
[  138.182082]  do_group_exit+0x2d/0xc0
[  138.182103]  get_signal+0x82e/0x900
[  138.182126]  ? fsnotify_grab_connector+0x4a/0x90
[  138.182153]  arch_do_signal_or_restart+0x77/0x2b0
[  138.182183]  ? __call_rcu_common.constprop.0+0x9a/0x340
[  138.182212]  ? __fput+0x17f/0x2c0
[  138.182232]  exit_to_user_mode_loop+0x75/0x4a0
[  138.182261]  do_syscall_64+0x439/0xfc0
[  138.182283]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[  138.182311] RIP: 0033:0x47fb83
[  138.182332] Code: Unable to access opcode bytes at 0x47fb59.
[  138.182369] RSP: 002b:00007ffe3e25bb30 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
[  138.182410] RAX: 0000000000000000 RBX: 00000000fffffff5 RCX: 000000000047fb83
[  138.182452] RDX: 000000000000000e RSI: 116af875bd0e30e9 RDI: 0000000000000007
[  138.182495] RBP: 00007ffe3e25c030 R08: 0000000000000041 R09: 000000000a7b23e0
[  138.182539] R10: 0000000000000040 R11: 0000000000000246 R12: 0000000000000000
[  138.182582] R13: fffffffffffffff0 R14: 0000000000000000 R15: 0000000000543540
[  138.182626]  </TASK>
[  138.182643] ---[ end trace 0000000000000000 ]---
[  138.195073] ------------[ cut here ]------------
[  138.195121] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#1: kworker/u16:1/65
[  138.195188] Modules linked in:
[  138.195212] CPU: 1 UID: 0 PID: 65 Comm: kworker/u16:1 Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[  138.195275] Tainted: [W]=WARN
[  138.195297] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  138.195337] Workqueue: netns cleanup_net
[  138.195365] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[  138.195401] 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
[  138.195502] RSP: 0018:ff71d8c68023fc78 EFLAGS: 00010286
[  138.195533] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[  138.195575] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff3cc9a4c2b63500
[  138.195616] RBP: 0000000000000000 R08: ff3cc9a4c2fcc710 R09: ff3cc9a4c4d2302c
[  138.195659] R10: ff3cc9a4c19be118 R11: fefefefefefefeff R12: 0000000000000000
[  138.195700] R13: 0000000000000011 R14: ff3cc9a4c19be000 R15: ff3cc9a4c2b63500
[  138.195742] FS:  0000000000000000(0000) GS:ff3cc9a545f16000(0000) knlGS:0000000000000000
[  138.195786] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  138.195823] CR2: 0000555573a6a340 CR3: 0000000003004002 CR4: 0000000000771ef0
[  138.195868] PKRU: 55555554
[  138.195882] Call Trace:
[  138.195900]  <TASK>
[  138.195915]  unregister_netdevice_many_notify+0x877/0x9d0
[  138.195956]  default_device_exit_batch+0x318/0x390
[  138.195988]  ops_undo_list+0x10b/0x240
[  138.196011]  cleanup_net+0x1d7/0x2e0
[  138.196036]  process_one_work+0x162/0x360
[  138.196066]  worker_thread+0x16e/0x2d0
[  138.196092]  ? rescuer_thread+0x510/0x510
[  138.196117]  kthread+0xe1/0x120
[  138.196137]  ? kthread_park+0xa0/0xa0
[  138.196160]  ret_from_fork+0x16d/0x250
[  138.196184]  ? kthread_park+0xa0/0xa0
[  138.196203]  ret_from_fork_asm+0x11/0x20
[  138.196227]  </TASK>
[  138.196243] ---[ end trace 0000000000000000 ]---