[    2.231952] ------------[ cut here ]------------
[    2.232002] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: unshare/160
[    2.232070] Modules linked in:
[    2.232098] CPU: 0 UID: 0 PID: 160 Comm: unshare Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[    2.232158] Tainted: [W]=WARN
[    2.232178] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.232216] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[    2.232246] 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
[    2.232339] RSP: 0018:ff6417dbc03afcc8 EFLAGS: 00010286
[    2.232370] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[    2.232417] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff1b0b4f4190f600
[    2.232458] RBP: 0000000000000000 R08: ff1b0b4f41964090 R09: ff1b0b4f44b0302c
[    2.232497] R10: ff1b0b4f4327e118 R11: fefefefefefefeff R12: 0000000000000000
[    2.232537] R13: 0000000000000010 R14: ff1b0b4f4327e000 R15: ff1b0b4f4190f600
[    2.232587] FS:  00007fa3c756f740(0000) GS:ff1b0b4fc4c96000(0000) knlGS:0000000000000000
[    2.233354] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.233393] CR2: 0000560abb60b310 CR3: 0000000004abb004 CR4: 0000000000771ef0
[    2.233435] PKRU: 55555554
[    2.233454] Call Trace:
[    2.233472]  <TASK>
[    2.233491]  rtmsg_ifinfo+0x3c/0xa0
[    2.233517]  register_netdevice+0x889/0x9f0
[    2.233541]  register_netdev+0x1e/0x30
[    2.233564]  loopback_net_init+0x57/0xb0
[    2.233597]  ? vsock_sysctl_init_net+0xb6/0x140
[    2.233632]  ops_init+0x68/0x140
[    2.233656]  setup_net+0x85/0x150
[    2.233683]  copy_net_ns+0xf5/0x200
[    2.233711]  create_new_namespaces+0x117/0x2f0
[    2.233744]  unshare_nsproxy_namespaces+0x85/0xb0
[    2.233772]  ksys_unshare+0x346/0x5e0
[    2.233797]  __x64_sys_unshare+0x12/0x20
[    2.233819]  do_syscall_64+0x104/0xfc0
[    2.233843]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[    2.233873] RIP: 0033:0x7fa3c766abcb
[    2.233895] 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
[    2.233991] RSP: 002b:00007ffea2336e48 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
[    2.234036] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fa3c766abcb
[    2.234080] RDX: 0000000000000000 RSI: 00007ffea2336bb0 RDI: 0000000040000000
[    2.234123] RBP: 00007ffea23371d0 R08: 00007ffea2336da0 R09: 0000000000000000
[    2.234161] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000040000000
[    2.234203] R13: 0000000000000000 R14: 00000000ffffffff R15: 0000560abb60eb68
[    2.234242]  </TASK>
[    2.234257] ---[ end trace 0000000000000000 ]---
[    2.237564] ------------[ cut here ]------------
[    2.237601] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: packetdrill/160
[    2.237654] Modules linked in:
[    2.237677] CPU: 0 UID: 0 PID: 160 Comm: packetdrill Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[    2.237735] Tainted: [W]=WARN
[    2.237757] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.237791] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[    2.237821] 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
[    2.237919] RSP: 0018:ff6417dbc03afd68 EFLAGS: 00010286
[    2.237942] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[    2.237981] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff1b0b4f4190f600
[    2.238030] RBP: 0000000000000000 R08: ff1b0b4f43336090 R09: ff1b0b4f44b00030
[    2.238072] R10: ff1b0b4f44988118 R11: fefefefefefefeff R12: 0000000000000000
[    2.238115] R13: 0000000000000010 R14: ff1b0b4f44988000 R15: ff1b0b4f4190f600
[    2.238159] FS:  0000000019838400(0000) GS:ff1b0b4fc4c96000(0000) knlGS:0000000000000000
[    2.238202] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.238236] CR2: 00007f7e23c8c000 CR3: 0000000004a49005 CR4: 0000000000771ef0
[    2.238277] PKRU: 55555554
[    2.238291] Call Trace:
[    2.238307]  <TASK>
[    2.238320]  rtmsg_ifinfo+0x3c/0xa0
[    2.238344]  register_netdevice+0x889/0x9f0
[    2.238364]  __tun_chr_ioctl+0x83c/0x16c0
[    2.238389]  ? do_sys_openat2+0x9a/0xe0
[    2.238413]  __x64_sys_ioctl+0xa1/0xe0
[    2.238435]  do_syscall_64+0x104/0xfc0
[    2.238459]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[    2.238487] RIP: 0033:0x47cc8d
[    2.238506] 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
[    2.238601] RSP: 002b:00007ffcf3840330 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[    2.238647] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[    2.238689] RDX: 00007ffcf38403b0 RSI: 00000000400454ca RDI: 0000000000000005
[    2.238731] RBP: 00007ffcf3840380 R08: 0000000000000000 R09: 0000000000000000
[    2.238771] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcf3840888
[    2.238811] R13: 00007ffcf3840908 R14: 0000000000000002 R15: 0000000000543540
[    2.238851]  </TASK>
[    2.238864] ---[ end trace 0000000000000000 ]---
[    2.238904] ------------[ cut here ]------------
[    2.238932] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: packetdrill/160
[    2.238981] Modules linked in:
[    2.239003] CPU: 0 UID: 0 PID: 160 Comm: packetdrill Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[    2.239061] Tainted: [W]=WARN
[    2.239084] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.239118] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[    2.239149] 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
[    2.239242] RSP: 0018:ff6417dbc03afd60 EFLAGS: 00010286
[    2.239269] RAX: 00000000ffffffa6 RBX: 0000000000000000 RCX: 0000000000000000
[    2.239313] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff1b0b4f4190f600
[    2.239353] RBP: 0000000000000002 R08: ff1b0b4f43336090 R09: ff1b0b4f44b00030
[    2.239393] R10: ff1b0b4f44988118 R11: fefefefefefefeff R12: 0000000000000000
[    2.239434] R13: 0000000000000010 R14: ff1b0b4f44988000 R15: ff1b0b4f4190f600
[    2.239477] FS:  0000000019838400(0000) GS:ff1b0b4fc4c96000(0000) knlGS:0000000000000000
[    2.239518] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.239553] CR2: 00007f7e23c8c000 CR3: 0000000004a49005 CR4: 0000000000771ef0
[    2.239597] PKRU: 55555554
[    2.239611] Call Trace:
[    2.239626]  <TASK>
[    2.239638]  rtnetlink_event+0x6e/0xb0
[    2.239659]  notifier_call_chain+0x6d/0x100
[    2.239683]  netdev_update_features+0x56/0x60
[    2.239709]  __tun_chr_ioctl+0xbf1/0x16c0
[    2.239731]  ? file_init_path+0x62/0x120
[    2.239757]  __x64_sys_ioctl+0xa1/0xe0
[    2.239779]  do_syscall_64+0x104/0xfc0
[    2.239802]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[    2.239829] RIP: 0033:0x47cc8d
[    2.239850] 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
[    2.239946] RSP: 002b:00007ffcf3840370 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[    2.239988] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[    2.240030] RDX: 000000000000000f RSI: 00000000400454d0 RDI: 0000000000000005
[    2.240071] RBP: 00007ffcf38403c0 R08: 0000000000000000 R09: 0000000000000000
[    2.240111] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcf3840888
[    2.240150] R13: 00007ffcf3840908 R14: 0000000000000002 R15: 0000000000543540
[    2.240191]  </TASK>
[    2.240211] ---[ end trace 0000000000000000 ]---
[    2.240254] ------------[ cut here ]------------
[    2.240285] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: packetdrill/160
[    2.240338] Modules linked in:
[    2.240358] CPU: 0 UID: 0 PID: 160 Comm: packetdrill Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[    2.240417] Tainted: [W]=WARN
[    2.240437] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.240476] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[    2.240498] 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
[    2.240597] RSP: 0018:ff6417dbc03afc10 EFLAGS: 00010286
[    2.240626] RAX: 00000000ffffffa6 RBX: 0000000000000001 RCX: 0000000000000000
[    2.240668] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff1b0b4f4190f600
[    2.240707] RBP: 0000000000000000 R08: ff1b0b4f43336090 R09: ff1b0b4f44b05030
[    2.240751] R10: ff1b0b4f44988118 R11: fefefefefefefeff R12: 0000000000000000
[    2.240788] R13: 0000000000000010 R14: ff1b0b4f44988000 R15: ff1b0b4f4190f600
[    2.240832] FS:  0000000019838400(0000) GS:ff1b0b4fc4c96000(0000) knlGS:0000000000000000
[    2.240875] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.240912] CR2: 00007f7e23c8c000 CR3: 0000000004a49005 CR4: 0000000000771ef0
[    2.240947] PKRU: 55555554
[    2.240962] Call Trace:
[    2.240975]  <TASK>
[    2.240987]  rtmsg_ifinfo+0x3c/0xa0
[    2.241009]  __dev_notify_flags+0xb1/0xf0
[    2.241036]  netif_change_flags+0x54/0x70
[    2.241061]  dev_change_flags+0x45/0x80
[    2.241083]  devinet_ioctl+0x607/0x7f0
[    2.241108]  inet_ioctl+0x229/0x240
[    2.241129]  ? __rtnl_unlock+0x35/0x60
[    2.241150]  sock_do_ioctl+0x75/0x140
[    2.241174]  __x64_sys_ioctl+0xa1/0xe0
[    2.241197]  do_syscall_64+0x104/0xfc0
[    2.241218]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[    2.241245] RIP: 0033:0x47cc8d
[    2.241267] 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
[    2.241364] RSP: 002b:00007ffcf3840350 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[    2.241403] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[    2.241441] RDX: 00007ffcf38403c0 RSI: 0000000000008914 RDI: 0000000000000006
[    2.241475] RBP: 00007ffcf38403a0 R08: 0000000000000000 R09: 0000000000000000
[    2.241515] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcf3840888
[    2.241552] R13: 00007ffcf3840908 R14: 0000000000000002 R15: 0000000000543540
[    2.241595]  </TASK>
[    2.241609] ---[ end trace 0000000000000000 ]---
[   47.214621] ------------[ cut here ]------------
[   47.214706] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: packetdrill/160
[   47.214757] Modules linked in:
[   47.214782] CPU: 0 UID: 0 PID: 160 Comm: packetdrill Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[   47.214848] Tainted: [W]=WARN
[   47.214872] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   47.214907] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[   47.214937] 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
[   47.215037] RSP: 0018:ff6417dbc03afb58 EFLAGS: 00010286
[   47.215063] RAX: 00000000ffffffa6 RBX: 0000000000000041 RCX: 0000000000000000
[   47.215111] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff1b0b4f4191ca00
[   47.215156] RBP: 0000000000000000 R08: ff1b0b4f43336090 R09: ff1b0b4f44b05030
[   47.215198] R10: ff1b0b4f44988118 R11: fefefefefefefeff R12: 0000000000000000
[   47.215239] R13: 0000000000000010 R14: ff1b0b4f44988000 R15: ff1b0b4f4191ca00
[   47.215282] FS:  0000000000000000(0000) GS:ff1b0b4fc4c96000(0000) knlGS:0000000000000000
[   47.215326] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   47.215362] CR2: 00007f638f5126f0 CR3: 0000000004997001 CR4: 0000000000771ef0
[   47.215405] PKRU: 55555554
[   47.215418] Call Trace:
[   47.215433]  <TASK>
[   47.215450]  rtmsg_ifinfo+0x3c/0xa0
[   47.215473]  netif_close_many+0xed/0x190
[   47.215498]  unregister_netdevice_many_notify+0x267/0x9d0
[   47.215526]  unregister_netdevice_queue+0x9e/0xd0
[   47.215556]  __tun_detach+0x591/0x5b0
[   47.215585]  tun_chr_close+0x3f/0xc0
[   47.215608]  __fput+0xe8/0x2c0
[   47.215634]  task_work_run+0x63/0xa0
[   47.215656]  do_exit+0x2c1/0xba0
[   47.215683]  ? __x64_sys_close+0x47/0xa0
[   47.215707]  do_group_exit+0x2d/0xc0
[   47.215728]  get_signal+0x82e/0x900
[   47.215753]  ? fsnotify_grab_connector+0x4a/0x90
[   47.215783]  arch_do_signal_or_restart+0x77/0x2b0
[   47.215809]  ? __call_rcu_common.constprop.0+0x9a/0x340
[   47.215839]  ? __fput+0x17f/0x2c0
[   47.215863]  exit_to_user_mode_loop+0x75/0x4a0
[   47.215895]  do_syscall_64+0x439/0xfc0
[   47.215920]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[   47.215954] RIP: 0033:0x47fb83
[   47.215978] Code: Unable to access opcode bytes at 0x47fb59.
[   47.216011] RSP: 002b:00007ffcf383fe20 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
[   47.216052] RAX: 0000000000000000 RBX: 00000000fffffff5 RCX: 000000000047fb83
[   47.216094] RDX: 000000000000000e RSI: 7d1f21c56980167a RDI: 0000000000000007
[   47.216136] RBP: 00007ffcf3840320 R08: 0000000000000041 R09: 00000000198393e0
[   47.216184] R10: 0000000000000040 R11: 0000000000000246 R12: 0000000000000000
[   47.216228] R13: fffffffffffffff0 R14: 0000000000000000 R15: 0000000000543540
[   47.216271]  </TASK>
[   47.216287] ---[ end trace 0000000000000000 ]---
[   47.216402] ------------[ cut here ]------------
[   47.216435] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: packetdrill/160
[   47.216490] Modules linked in:
[   47.216511] CPU: 0 UID: 0 PID: 160 Comm: packetdrill Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[   47.216570] Tainted: [W]=WARN
[   47.216593] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   47.216632] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[   47.216656] 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
[   47.216757] RSP: 0018:ff6417dbc03afbc8 EFLAGS: 00010286
[   47.216785] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   47.216827] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff1b0b4f4191ca00
[   47.216868] RBP: 0000000000000000 R08: ff1b0b4f43336090 R09: ff1b0b4f4205a830
[   47.216919] R10: ff1b0b4f44988118 R11: fefefefefefefeff R12: 0000000000000000
[   47.216960] R13: 0000000000000011 R14: ff1b0b4f44988000 R15: ff1b0b4f4191ca00
[   47.217003] FS:  0000000000000000(0000) GS:ff1b0b4fc4c96000(0000) knlGS:0000000000000000
[   47.217047] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   47.217080] CR2: 00007f638f5126f0 CR3: 0000000004997001 CR4: 0000000000771ef0
[   47.217123] PKRU: 55555554
[   47.217138] Call Trace:
[   47.217156]  <TASK>
[   47.217168]  unregister_netdevice_many_notify+0x877/0x9d0
[   47.217198]  unregister_netdevice_queue+0x9e/0xd0
[   47.217226]  __tun_detach+0x591/0x5b0
[   47.217248]  tun_chr_close+0x3f/0xc0
[   47.217267]  __fput+0xe8/0x2c0
[   47.217288]  task_work_run+0x63/0xa0
[   47.217307]  do_exit+0x2c1/0xba0
[   47.217327]  ? __x64_sys_close+0x47/0xa0
[   47.217346]  do_group_exit+0x2d/0xc0
[   47.217368]  get_signal+0x82e/0x900
[   47.217390]  ? fsnotify_grab_connector+0x4a/0x90
[   47.217418]  arch_do_signal_or_restart+0x77/0x2b0
[   47.217446]  ? __call_rcu_common.constprop.0+0x9a/0x340
[   47.217476]  ? __fput+0x17f/0x2c0
[   47.217496]  exit_to_user_mode_loop+0x75/0x4a0
[   47.217524]  do_syscall_64+0x439/0xfc0
[   47.217545]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[   47.217574] RIP: 0033:0x47fb83
[   47.217838] Code: Unable to access opcode bytes at 0x47fb59.
[   47.217877] RSP: 002b:00007ffcf383fe20 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
[   47.217918] RAX: 0000000000000000 RBX: 00000000fffffff5 RCX: 000000000047fb83
[   47.217962] RDX: 000000000000000e RSI: 7d1f21c56980167a RDI: 0000000000000007
[   47.218004] RBP: 00007ffcf3840320 R08: 0000000000000041 R09: 00000000198393e0
[   47.218045] R10: 0000000000000040 R11: 0000000000000246 R12: 0000000000000000
[   47.218087] R13: fffffffffffffff0 R14: 0000000000000000 R15: 0000000000543540
[   47.218127]  </TASK>
[   47.218143] ---[ end trace 0000000000000000 ]---
[   47.226673] ------------[ cut here ]------------
[   47.226749] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#2: kworker/u16:0/12
[   47.226844] Modules linked in:
[   47.226901] CPU: 2 UID: 0 PID: 12 Comm: kworker/u16:0 Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[   47.226995] Tainted: [W]=WARN
[   47.227050] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   47.227118] Workqueue: netns cleanup_net
[   47.227182] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[   47.227246] 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
[   47.227378] RSP: 0018:ff6417dbc0067c78 EFLAGS: 00010286
[   47.227440] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   47.227518] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff1b0b4f4194b900
[   47.227609] RBP: 0000000000000000 R08: ff1b0b4f41964090 R09: ff1b0b4f431dd82c
[   47.227687] R10: ff1b0b4f4327e118 R11: fefefefefefefeff R12: 0000000000000000
[   47.227764] R13: 0000000000000011 R14: ff1b0b4f4327e000 R15: ff1b0b4f4194b900
[   47.227845] FS:  0000000000000000(0000) GS:ff1b0b4fc4d96000(0000) knlGS:0000000000000000
[   47.227922] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   47.227991] CR2: 00007ff76e7f6f98 CR3: 000000002ac42001 CR4: 0000000000771ef0
[   47.228069] PKRU: 55555554
[   47.228117] Call Trace:
[   47.228172]  <TASK>
[   47.228221]  unregister_netdevice_many_notify+0x877/0x9d0
[   47.228286]  default_device_exit_batch+0x318/0x390
[   47.228350]  ops_undo_list+0x10b/0x240
[   47.228408]  cleanup_net+0x1d7/0x2e0
[   47.228465]  process_one_work+0x162/0x360
[   47.228525]  worker_thread+0x16e/0x2d0
[   47.228598]  ? rescuer_thread+0x510/0x510
[   47.228655]  kthread+0xe1/0x120
[   47.228712]  ? kthread_park+0xa0/0xa0
[   47.228776]  ret_from_fork+0x16d/0x250
[   47.228834]  ? kthread_park+0xa0/0xa0
[   47.228889]  ret_from_fork_asm+0x11/0x20
[   47.228947]  </TASK>
[   47.228995] ---[ end trace 0000000000000000 ]---