[    2.233114] ------------[ cut here ]------------
[    2.233160] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: unshare/159
[    2.233211] Modules linked in:
[    2.233234] CPU: 0 UID: 0 PID: 159 Comm: unshare Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[    2.233290] Tainted: [W]=WARN
[    2.233314] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.233348] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[    2.233379] 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
[    2.233467] RSP: 0018:ff805286402e3cc8 EFLAGS: 00010286
[    2.233492] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[    2.233532] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff28093d430ba200
[    2.233573] RBP: 0000000000000000 R08: ff28093d4334a550 R09: ff28093d4477b02c
[    2.233610] R10: ff28093d419be118 R11: fefefefefefefeff R12: 0000000000000000
[    2.233652] R13: 0000000000000010 R14: ff28093d419be000 R15: ff28093d430ba200
[    2.233695] FS:  00007ff30384f740(0000) GS:ff28093ddb896000(0000) knlGS:0000000000000000
[    2.233736] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.233777] CR2: 0000557138d7e310 CR3: 0000000003160003 CR4: 0000000000771ef0
[    2.233817] PKRU: 55555554
[    2.233830] Call Trace:
[    2.233847]  <TASK>
[    2.233860]  rtmsg_ifinfo+0x3c/0xa0
[    2.233882]  register_netdevice+0x889/0x9f0
[    2.233905]  register_netdev+0x1e/0x30
[    2.233925]  loopback_net_init+0x57/0xb0
[    2.233948]  ? vsock_sysctl_init_net+0xb6/0x140
[    2.233981]  ops_init+0x68/0x140
[    2.234004]  setup_net+0x85/0x150
[    2.234024]  copy_net_ns+0xf5/0x200
[    2.234047]  create_new_namespaces+0x117/0x2f0
[    2.234076]  unshare_nsproxy_namespaces+0x85/0xb0
[    2.234102]  ksys_unshare+0x346/0x5e0
[    2.234126]  __x64_sys_unshare+0x12/0x20
[    2.234150]  do_syscall_64+0x104/0xfc0
[    2.234173]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[    2.234202] RIP: 0033:0x7ff30394abcb
[    2.234225] 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
[    2.234316] RSP: 002b:00007ffe48fd27d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
[    2.234357] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007ff30394abcb
[    2.234396] RDX: 0000000000000000 RSI: 00007ffe48fd2540 RDI: 0000000040000000
[    2.234433] RBP: 00007ffe48fd2b60 R08: 00007ffe48fd2730 R09: 0000000000000000
[    2.234475] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000040000000
[    2.234516] R13: 0000000000000000 R14: 00000000ffffffff R15: 0000557138d81b68
[    2.234552]  </TASK>
[    2.234572] ---[ end trace 0000000000000000 ]---
[    2.239228] ------------[ cut here ]------------
[    2.239273] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: packetdrill/159
[    2.239315] Modules linked in:
[    2.239342] CPU: 0 UID: 0 PID: 159 Comm: packetdrill Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[    2.239403] Tainted: [W]=WARN
[    2.239423] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.239463] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[    2.239490] 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
[    2.239585] RSP: 0018:ff805286402e3d68 EFLAGS: 00010286
[    2.239613] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[    2.239654] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff28093d430ba200
[    2.239696] RBP: 0000000000000000 R08: ff28093d43350c50 R09: ff28093d44778030
[    2.239733] R10: ff28093d445e4118 R11: fefefefefefefeff R12: 0000000000000000
[    2.239780] R13: 0000000000000010 R14: ff28093d445e4000 R15: ff28093d430ba200
[    2.239827] FS:  000000001b418400(0000) GS:ff28093ddb896000(0000) knlGS:0000000000000000
[    2.239864] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.239900] CR2: 00007f76e212a000 CR3: 000000000457c004 CR4: 0000000000771ef0
[    2.239939] PKRU: 55555554
[    2.239954] Call Trace:
[    2.239969]  <TASK>
[    2.239986]  rtmsg_ifinfo+0x3c/0xa0
[    2.240005]  register_netdevice+0x889/0x9f0
[    2.240027]  __tun_chr_ioctl+0x83c/0x16c0
[    2.240051]  ? do_sys_openat2+0x9a/0xe0
[    2.240076]  __x64_sys_ioctl+0xa1/0xe0
[    2.240098]  do_syscall_64+0x104/0xfc0
[    2.240121]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[    2.240149] RIP: 0033:0x47cc8d
[    2.240169] 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
[    2.240256] RSP: 002b:00007ffc194bd380 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[    2.240300] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[    2.240341] RDX: 00007ffc194bd400 RSI: 00000000400454ca RDI: 0000000000000005
[    2.240383] RBP: 00007ffc194bd3d0 R08: 0000000000000000 R09: 0000000000000000
[    2.240423] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc194bd8d8
[    2.240459] R13: 00007ffc194bd958 R14: 0000000000000002 R15: 0000000000543540
[    2.240499]  </TASK>
[    2.240512] ---[ end trace 0000000000000000 ]---
[    2.240552] ------------[ cut here ]------------
[    2.240579] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: packetdrill/159
[    2.240627] Modules linked in:
[    2.240650] CPU: 0 UID: 0 PID: 159 Comm: packetdrill Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[    2.240704] Tainted: [W]=WARN
[    2.240726] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.240761] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[    2.240794] 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
[    2.240896] RSP: 0018:ff805286402e3d60 EFLAGS: 00010286
[    2.240925] RAX: 00000000ffffffa6 RBX: 0000000000000000 RCX: 0000000000000000
[    2.240966] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff28093d430ba200
[    2.241005] RBP: 0000000000000002 R08: ff28093d43350c50 R09: ff28093d44778030
[    2.241045] R10: ff28093d445e4118 R11: fefefefefefefeff R12: 0000000000000000
[    2.241083] R13: 0000000000000010 R14: ff28093d445e4000 R15: ff28093d430ba200
[    2.241125] FS:  000000001b418400(0000) GS:ff28093ddb896000(0000) knlGS:0000000000000000
[    2.241169] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.241200] CR2: 00007f76e212a000 CR3: 000000000457c004 CR4: 0000000000771ef0
[    2.241246] PKRU: 55555554
[    2.241260] Call Trace:
[    2.241277]  <TASK>
[    2.241294]  rtnetlink_event+0x6e/0xb0
[    2.241315]  notifier_call_chain+0x6d/0x100
[    2.241338]  netdev_update_features+0x56/0x60
[    2.241366]  __tun_chr_ioctl+0xbf1/0x16c0
[    2.241388]  ? file_init_path+0x62/0x120
[    2.241412]  __x64_sys_ioctl+0xa1/0xe0
[    2.241434]  do_syscall_64+0x104/0xfc0
[    2.241455]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[    2.241483] RIP: 0033:0x47cc8d
[    2.241503] 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
[    2.241587] RSP: 002b:00007ffc194bd3c0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[    2.241624] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[    2.241664] RDX: 000000000000000f RSI: 00000000400454d0 RDI: 0000000000000005
[    2.241706] RBP: 00007ffc194bd410 R08: 0000000000000000 R09: 0000000000000000
[    2.241744] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc194bd8d8
[    2.241785] R13: 00007ffc194bd958 R14: 0000000000000002 R15: 0000000000543540
[    2.241821]  </TASK>
[    2.241834] ---[ end trace 0000000000000000 ]---
[    2.241876] ------------[ cut here ]------------
[    2.241904] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: packetdrill/159
[    2.241952] Modules linked in:
[    2.241973] CPU: 0 UID: 0 PID: 159 Comm: packetdrill Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[    2.242032] Tainted: [W]=WARN
[    2.242050] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.242084] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[    2.242112] 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
[    2.242204] RSP: 0018:ff805286402e3c10 EFLAGS: 00010286
[    2.242229] RAX: 00000000ffffffa6 RBX: 0000000000000001 RCX: 0000000000000000
[    2.242270] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff28093d430ba200
[    2.242307] RBP: 0000000000000000 R08: ff28093d43350c50 R09: ff28093d4477d030
[    2.242344] R10: ff28093d445e4118 R11: fefefefefefefeff R12: 0000000000000000
[    2.242386] R13: 0000000000000010 R14: ff28093d445e4000 R15: ff28093d430ba200
[    2.242429] FS:  000000001b418400(0000) GS:ff28093ddb896000(0000) knlGS:0000000000000000
[    2.242472] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.242509] CR2: 00007f76e212a000 CR3: 000000000457c004 CR4: 0000000000771ef0
[    2.242549] PKRU: 55555554
[    2.242562] Call Trace:
[    2.242575]  <TASK>
[    2.242589]  rtmsg_ifinfo+0x3c/0xa0
[    2.242610]  __dev_notify_flags+0xb1/0xf0
[    2.242631]  netif_change_flags+0x54/0x70
[    2.242655]  dev_change_flags+0x45/0x80
[    2.242674]  devinet_ioctl+0x607/0x7f0
[    2.242698]  inet_ioctl+0x229/0x240
[    2.242718]  ? __rtnl_unlock+0x35/0x60
[    2.242740]  sock_do_ioctl+0x75/0x140
[    2.242765]  __x64_sys_ioctl+0xa1/0xe0
[    2.242789]  do_syscall_64+0x104/0xfc0
[    2.242811]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[    2.242840] RIP: 0033:0x47cc8d
[    2.242861] 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
[    2.242951] RSP: 002b:00007ffc194bd3a0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[    2.242991] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[    2.243033] RDX: 00007ffc194bd410 RSI: 0000000000008914 RDI: 0000000000000006
[    2.243071] RBP: 00007ffc194bd3f0 R08: 0000000000000000 R09: 0000000000000000
[    2.243112] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc194bd8d8
[    2.243149] R13: 00007ffc194bd958 R14: 0000000000000002 R15: 0000000000543540
[    2.243187]  </TASK>
[    2.243201] ---[ end trace 0000000000000000 ]---
[   47.215229] ------------[ cut here ]------------
[   47.215298] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: packetdrill/159
[   47.215377] Modules linked in:
[   47.215406] CPU: 0 UID: 0 PID: 159 Comm: packetdrill Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[   47.215465] Tainted: [W]=WARN
[   47.215486] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   47.215522] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[   47.215556] 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
[   47.215654] RSP: 0018:ff805286402e3b58 EFLAGS: 00010286
[   47.215685] RAX: 00000000ffffffa6 RBX: 0000000000000041 RCX: 0000000000000000
[   47.215725] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff28093d430c8a00
[   47.215770] RBP: 0000000000000000 R08: ff28093d43350c50 R09: ff28093d4477d030
[   47.215810] R10: ff28093d445e4118 R11: fefefefefefefeff R12: 0000000000000000
[   47.215857] R13: 0000000000000010 R14: ff28093d445e4000 R15: ff28093d430c8a00
[   47.215911] FS:  0000000000000000(0000) GS:ff28093ddb896000(0000) knlGS:0000000000000000
[   47.215957] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   47.215997] CR2: 00007f76e212a000 CR3: 0000000035042005 CR4: 0000000000771ef0
[   47.216043] PKRU: 55555554
[   47.216057] Call Trace:
[   47.216075]  <TASK>
[   47.216091]  rtmsg_ifinfo+0x3c/0xa0
[   47.216114]  netif_close_many+0xed/0x190
[   47.216141]  unregister_netdevice_many_notify+0x267/0x9d0
[   47.216167]  ? __queue_work+0x141/0x550
[   47.216193]  unregister_netdevice_queue+0x9e/0xd0
[   47.216224]  __tun_detach+0x591/0x5b0
[   47.216248]  tun_chr_close+0x3f/0xc0
[   47.216270]  __fput+0xe8/0x2c0
[   47.216296]  task_work_run+0x63/0xa0
[   47.216320]  do_exit+0x2c1/0xba0
[   47.216343]  do_group_exit+0x2d/0xc0
[   47.216365]  ? __sys_sendto+0x194/0x220
[   47.216389]  get_signal+0x82e/0x900
[   47.216409]  arch_do_signal_or_restart+0x77/0x2b0
[   47.216443]  exit_to_user_mode_loop+0x75/0x4a0
[   47.216469]  do_syscall_64+0x439/0xfc0
[   47.216494]  ? __sysvec_call_function_single+0x20/0xd0
[   47.216525]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[   47.216556] RIP: 0033:0x4c2d9e
[   47.216579] Code: Unable to access opcode bytes at 0x4c2d74.
[   47.216614] RSP: 002b:00007ffc194bcd30 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[   47.216658] RAX: 0000000000000014 RBX: 0000000000000016 RCX: 00000000004c2d9e
[   47.216700] RDX: 0000000000000014 RSI: 00007ffc194bce10 RDI: 0000000000000007
[   47.216743] RBP: 00007ffc194bcd40 R08: 00007ffc194bcdd0 R09: 000000000000000c
[   47.216786] R10: 0000000000000000 R11: 0000000000000202 R12: 000000001b421bd0
[   47.216830] R13: 00007ffc194bd958 R14: 00007ffc194bcf00 R15: 0000000000543540
[   47.216873]  </TASK>
[   47.216893] ---[ end trace 0000000000000000 ]---
[   47.216998] ------------[ cut here ]------------
[   47.217025] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: packetdrill/159
[   47.217075] Modules linked in:
[   47.217098] CPU: 0 UID: 0 PID: 159 Comm: packetdrill Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[   47.217160] Tainted: [W]=WARN
[   47.217181] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   47.217217] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[   47.217245] 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
[   47.217341] RSP: 0018:ff805286402e3bc8 EFLAGS: 00010286
[   47.217369] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   47.217413] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff28093d430c8a00
[   47.217460] RBP: 0000000000000000 R08: ff28093d43350c50 R09: ff28093d444c3030
[   47.217506] R10: ff28093d445e4118 R11: fefefefefefefeff R12: 0000000000000000
[   47.217548] R13: 0000000000000011 R14: ff28093d445e4000 R15: ff28093d430c8a00
[   47.217594] FS:  0000000000000000(0000) GS:ff28093ddb896000(0000) knlGS:0000000000000000
[   47.217641] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   47.217679] CR2: 00007f76e212a000 CR3: 0000000035042005 CR4: 0000000000771ef0
[   47.217721] PKRU: 55555554
[   47.217736] Call Trace:
[   47.217750]  <TASK>
[   47.217764]  unregister_netdevice_many_notify+0x877/0x9d0
[   47.217789]  unregister_netdevice_queue+0x9e/0xd0
[   47.217819]  __tun_detach+0x591/0x5b0
[   47.217843]  tun_chr_close+0x3f/0xc0
[   47.217862]  __fput+0xe8/0x2c0
[   47.217894]  task_work_run+0x63/0xa0
[   47.217916]  do_exit+0x2c1/0xba0
[   47.217934]  do_group_exit+0x2d/0xc0
[   47.217955]  ? __sys_sendto+0x194/0x220
[   47.218107]  get_signal+0x82e/0x900
[   47.218130]  arch_do_signal_or_restart+0x77/0x2b0
[   47.218164]  exit_to_user_mode_loop+0x75/0x4a0
[   47.218193]  do_syscall_64+0x439/0xfc0
[   47.218216]  ? __sysvec_call_function_single+0x20/0xd0
[   47.218244]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[   47.218273] RIP: 0033:0x4c2d9e
[   47.218296] Code: Unable to access opcode bytes at 0x4c2d74.
[   47.218329] RSP: 002b:00007ffc194bcd30 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[   47.218374] RAX: 0000000000000014 RBX: 0000000000000016 RCX: 00000000004c2d9e
[   47.218417] RDX: 0000000000000014 RSI: 00007ffc194bce10 RDI: 0000000000000007
[   47.218460] RBP: 00007ffc194bcd40 R08: 00007ffc194bcdd0 R09: 000000000000000c
[   47.218502] R10: 0000000000000000 R11: 0000000000000202 R12: 000000001b421bd0
[   47.218544] R13: 00007ffc194bd958 R14: 00007ffc194bcf00 R15: 0000000000543540
[   47.218590]  </TASK>
[   47.218605] ---[ end trace 0000000000000000 ]---
[   47.223108] ------------[ cut here ]------------
[   47.223186] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: kworker/u16:0/12
[   47.223250] Modules linked in:
[   47.223274] CPU: 3 UID: 0 PID: 12 Comm: kworker/u16:0 Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[   47.223330] Tainted: [W]=WARN
[   47.223352] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   47.223387] Workqueue: netns cleanup_net
[   47.223413] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[   47.223438] 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
[   47.223535] RSP: 0018:ff80528640067c78 EFLAGS: 00010286
[   47.223563] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   47.223601] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff28093d430c8800
[   47.223638] RBP: 0000000000000000 R08: ff28093d4334a550 R09: ff28093d432c202c
[   47.223676] R10: ff28093d419be118 R11: fefefefefefefeff R12: 0000000000000000
[   47.223716] R13: 0000000000000011 R14: ff28093d419be000 R15: ff28093d430c8800
[   47.223757] FS:  0000000000000000(0000) GS:ff28093ddba16000(0000) knlGS:0000000000000000
[   47.223801] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   47.223831] CR2: 0000562f074322b8 CR3: 0000000002e9a001 CR4: 0000000000771ef0
[   47.223865] PKRU: 55555554
[   47.223887] Call Trace:
[   47.223902]  <TASK>
[   47.223918]  unregister_netdevice_many_notify+0x877/0x9d0
[   47.223950]  default_device_exit_batch+0x318/0x390
[   47.223980]  ops_undo_list+0x10b/0x240
[   47.224002]  cleanup_net+0x1d7/0x2e0
[   47.224022]  process_one_work+0x162/0x360
[   47.224042]  worker_thread+0x16e/0x2d0
[   47.224064]  ? rescuer_thread+0x510/0x510
[   47.224091]  kthread+0xe1/0x120
[   47.224111]  ? kthread_park+0xa0/0xa0
[   47.224133]  ret_from_fork+0x16d/0x250
[   47.224161]  ? kthread_park+0xa0/0xa0
[   47.224181]  ret_from_fork_asm+0x11/0x20
[   47.224202]  </TASK>
[   47.224215] ---[ end trace 0000000000000000 ]---