[   47.670365] ------------[ cut here ]------------
[   47.670414] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: unshare/204
[   47.670463] Modules linked in:
[   47.670486] CPU: 3 UID: 0 PID: 204 Comm: unshare Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[   47.670542] Tainted: [W]=WARN
[   47.670566] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   47.670600] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[   47.670631] 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
[   47.670721] RSP: 0018:ff82f7ea8047fcc8 EFLAGS: 00010286
[   47.670748] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   47.670789] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff3286d842fcc500
[   47.670835] RBP: 0000000000000000 R08: ff3286d8431d5490 R09: ff3286d84301702c
[   47.670876] R10: ff3286d843012118 R11: fefefefefefefeff R12: 0000000000000000
[   47.670916] R13: 0000000000000010 R14: ff3286d843012000 R15: ff3286d842fcc500
[   47.670959] FS:  00007f82611ad740(0000) GS:ff3286d8cd816000(0000) knlGS:0000000000000000
[   47.671002] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   47.671036] CR2: 000055cde406f008 CR3: 000000000327d003 CR4: 0000000000771ef0
[   47.671078] PKRU: 55555554
[   47.671094] Call Trace:
[   47.671110]  <TASK>
[   47.671127]  rtmsg_ifinfo+0x3c/0xa0
[   47.671146]  register_netdevice+0x889/0x9f0
[   47.671168]  register_netdev+0x1e/0x30
[   47.671187]  loopback_net_init+0x57/0xb0
[   47.671210]  ? vsock_sysctl_init_net+0xb6/0x140
[   47.671240]  ops_init+0x68/0x140
[   47.671263]  setup_net+0x85/0x150
[   47.671285]  copy_net_ns+0xf5/0x200
[   47.671307]  create_new_namespaces+0x117/0x2f0
[   47.671336]  unshare_nsproxy_namespaces+0x85/0xb0
[   47.671364]  ksys_unshare+0x346/0x5e0
[   47.671388]  __x64_sys_unshare+0x12/0x20
[   47.671409]  do_syscall_64+0x104/0xfc0
[   47.671432]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[   47.671462] RIP: 0033:0x7f82612a8bcb
[   47.671482] 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
[   47.671573] RSP: 002b:00007ffdae285408 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
[   47.671619] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f82612a8bcb
[   47.671658] RDX: 0000000000000000 RSI: 00007ffdae285170 RDI: 0000000040000000
[   47.671698] RBP: 00007ffdae285790 R08: 00007ffdae285360 R09: 0000000000000000
[   47.671738] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000040000000
[   47.671778] R13: 0000000000000000 R14: 00000000ffffffff R15: 000055cda4940b68
[   47.671829]  </TASK>
[   47.671844] ---[ end trace 0000000000000000 ]---
[   47.672467] ------------[ cut here ]------------
[   47.672499] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/204
[   47.672551] Modules linked in:
[   47.672578] CPU: 3 UID: 0 PID: 204 Comm: packetdrill Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[   47.672630] Tainted: [W]=WARN
[   47.672653] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   47.672685] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[   47.672714] 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
[   47.672810] RSP: 0018:ff82f7ea8047fd68 EFLAGS: 00010286
[   47.672839] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   47.672879] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff3286d842fcc500
[   47.672918] RBP: 0000000000000000 R08: ff3286d84183fb50 R09: ff3286d843014030
[   47.672957] R10: ff3286d844d54118 R11: fefefefefefefeff R12: 0000000000000000
[   47.672997] R13: 0000000000000010 R14: ff3286d844d54000 R15: ff3286d842fcc500
[   47.673038] FS:  000000001c4be400(0000) GS:ff3286d8cd816000(0000) knlGS:0000000000000000
[   47.673078] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   47.673114] CR2: 00007f99804f0000 CR3: 0000000004dfb004 CR4: 0000000000771ef0
[   47.673156] PKRU: 55555554
[   47.673168] Call Trace:
[   47.673185]  <TASK>
[   47.673199]  rtmsg_ifinfo+0x3c/0xa0
[   47.673221]  register_netdevice+0x889/0x9f0
[   47.673243]  __tun_chr_ioctl+0x83c/0x16c0
[   47.673267]  ? do_sys_openat2+0x9a/0xe0
[   47.673289]  __x64_sys_ioctl+0xa1/0xe0
[   47.673314]  do_syscall_64+0x104/0xfc0
[   47.673336]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[   47.673366] RIP: 0033:0x47cc8d
[   47.673386] 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
[   47.673477] RSP: 002b:00007fffd84d72a0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   47.673523] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[   47.673562] RDX: 00007fffd84d7320 RSI: 00000000400454ca RDI: 0000000000000005
[   47.673601] RBP: 00007fffd84d72f0 R08: 0000000000000000 R09: 0000000000000000
[   47.673638] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fffd84d77f8
[   47.673678] R13: 00007fffd84d7878 R14: 0000000000000002 R15: 0000000000543540
[   47.673719]  </TASK>
[   47.673733] ---[ end trace 0000000000000000 ]---
[   47.673774] ------------[ cut here ]------------
[   47.673807] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/204
[   47.673856] Modules linked in:
[   47.673880] CPU: 3 UID: 0 PID: 204 Comm: packetdrill Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[   47.673939] Tainted: [W]=WARN
[   47.673960] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   47.673994] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[   47.674023] 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
[   47.674116] RSP: 0018:ff82f7ea8047fd60 EFLAGS: 00010286
[   47.674143] RAX: 00000000ffffffa6 RBX: 0000000000000000 RCX: 0000000000000000
[   47.674183] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff3286d842fcc500
[   47.674222] RBP: 0000000000000002 R08: ff3286d84183fb50 R09: ff3286d843014030
[   47.674269] R10: ff3286d844d54118 R11: fefefefefefefeff R12: 0000000000000000
[   47.674308] R13: 0000000000000010 R14: ff3286d844d54000 R15: ff3286d842fcc500
[   47.674349] FS:  000000001c4be400(0000) GS:ff3286d8cd816000(0000) knlGS:0000000000000000
[   47.674389] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   47.674423] CR2: 00007f99804f0000 CR3: 0000000004dfb004 CR4: 0000000000771ef0
[   47.674461] PKRU: 55555554
[   47.674476] Call Trace:
[   47.674491]  <TASK>
[   47.674507]  rtnetlink_event+0x6e/0xb0
[   47.674530]  notifier_call_chain+0x6d/0x100
[   47.674556]  netdev_update_features+0x56/0x60
[   47.674589]  __tun_chr_ioctl+0xbf1/0x16c0
[   47.674610]  ? file_init_path+0x62/0x120
[   47.674631]  __x64_sys_ioctl+0xa1/0xe0
[   47.674652]  do_syscall_64+0x104/0xfc0
[   47.674671]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[   47.674700] RIP: 0033:0x47cc8d
[   47.674721] 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
[   47.674815] RSP: 002b:00007fffd84d72e0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   47.674860] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[   47.674896] RDX: 000000000000000f RSI: 00000000400454d0 RDI: 0000000000000005
[   47.674936] RBP: 00007fffd84d7330 R08: 0000000000000005 R09: 0000000000000030
[   47.674976] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fffd84d77f8
[   47.675016] R13: 00007fffd84d7878 R14: 0000000000000002 R15: 0000000000543540
[   47.675061]  </TASK>
[   47.675075] ---[ end trace 0000000000000000 ]---
[   47.675121] ------------[ cut here ]------------
[   47.675148] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/204
[   47.675193] Modules linked in:
[   47.675212] CPU: 3 UID: 0 PID: 204 Comm: packetdrill Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[   47.675264] Tainted: [W]=WARN
[   47.675285] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   47.675320] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[   47.675347] 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
[   47.675436] RSP: 0018:ff82f7ea8047fc10 EFLAGS: 00010286
[   47.675468] RAX: 00000000ffffffa6 RBX: 0000000000000001 RCX: 0000000000000000
[   47.675507] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff3286d842fcc500
[   47.675543] RBP: 0000000000000000 R08: ff3286d84183fb50 R09: ff3286d844e48030
[   47.675585] R10: ff3286d844d54118 R11: fefefefefefefeff R12: 0000000000000000
[   47.675632] R13: 0000000000000010 R14: ff3286d844d54000 R15: ff3286d842fcc500
[   47.675678] FS:  000000001c4be400(0000) GS:ff3286d8cd816000(0000) knlGS:0000000000000000
[   47.675720] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   47.675753] CR2: 00007f99804f0000 CR3: 0000000004dfb004 CR4: 0000000000771ef0
[   47.675793] PKRU: 55555554
[   47.675812] Call Trace:
[   47.675824]  <TASK>
[   47.675839]  rtmsg_ifinfo+0x3c/0xa0
[   47.675862]  __dev_notify_flags+0xb1/0xf0
[   47.675884]  netif_change_flags+0x54/0x70
[   47.675907]  dev_change_flags+0x45/0x80
[   47.675929]  devinet_ioctl+0x607/0x7f0
[   47.675954]  inet_ioctl+0x229/0x240
[   47.675975]  ? __rtnl_unlock+0x35/0x60
[   47.675996]  sock_do_ioctl+0x75/0x140
[   47.676019]  __x64_sys_ioctl+0xa1/0xe0
[   47.676038]  do_syscall_64+0x104/0xfc0
[   47.676060]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[   47.676088] RIP: 0033:0x47cc8d
[   47.676111] 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
[   47.676207] RSP: 002b:00007fffd84d72c0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   47.676249] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[   47.676287] RDX: 00007fffd84d7330 RSI: 0000000000008914 RDI: 0000000000000006
[   47.676326] RBP: 00007fffd84d7310 R08: 0000000000000005 R09: 0000000000000030
[   47.676367] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fffd84d77f8
[   47.676414] R13: 00007fffd84d7878 R14: 0000000000000002 R15: 0000000000543540
[   47.676452]  </TASK>
[   47.676466] ---[ end trace 0000000000000000 ]---
[   92.655880] ------------[ cut here ]------------
[   92.655971] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/204
[   92.656035] Modules linked in:
[   92.656060] CPU: 3 UID: 0 PID: 204 Comm: packetdrill Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[   92.656129] Tainted: [W]=WARN
[   92.656154] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   92.656185] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[   92.656217] 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
[   92.656318] RSP: 0018:ff82f7ea8047fb88 EFLAGS: 00010286
[   92.656351] RAX: 00000000ffffffa6 RBX: 0000000000000041 RCX: 0000000000000000
[   92.656398] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff3286d84188f500
[   92.656447] RBP: 0000000000000000 R08: ff3286d84183fb50 R09: ff3286d844e48030
[   92.656488] R10: ff3286d844d54118 R11: fefefefefefefeff R12: 0000000000000000
[   92.656535] R13: 0000000000000010 R14: ff3286d844d54000 R15: ff3286d84188f500
[   92.656583] FS:  0000000000000000(0000) GS:ff3286d8cd816000(0000) knlGS:0000000000000000
[   92.656627] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   92.656663] CR2: 00007f72bbb296f0 CR3: 0000000030e42006 CR4: 0000000000771ef0
[   92.656699] PKRU: 55555554
[   92.656716] Call Trace:
[   92.656732]  <TASK>
[   92.656750]  rtmsg_ifinfo+0x3c/0xa0
[   92.656773]  netif_close_many+0xed/0x190
[   92.656794]  unregister_netdevice_many_notify+0x267/0x9d0
[   92.656823]  ? __queue_work+0x141/0x550
[   92.656850]  unregister_netdevice_queue+0x9e/0xd0
[   92.656875]  __tun_detach+0x591/0x5b0
[   92.656900]  tun_chr_close+0x3f/0xc0
[   92.656930]  __fput+0xe8/0x2c0
[   92.656957]  task_work_run+0x63/0xa0
[   92.656976]  do_exit+0x2c1/0xba0
[   92.657001]  do_group_exit+0x2d/0xc0
[   92.657025]  get_signal+0x82e/0x900
[   92.657051]  ? save_fpregs_to_fpstate+0x4a/0xa0
[   92.657085]  arch_do_signal_or_restart+0x77/0x2b0
[   92.657120]  ? __schedule+0x3ff/0x1050
[   92.657148]  ? schedule+0x27/0xd0
[   92.657170]  irqentry_exit+0x1f5/0x540
[   92.657192]  ? __sysvec_call_function_single+0x20/0xd0
[   92.657226]  asm_sysvec_call_function_single+0x1a/0x20
[   92.657256] RIP: 0033:0x45d43d
[   92.657278] Code: Unable to access opcode bytes at 0x45d413.
[   92.657320] RSP: 002b:00007fffd84d6ca8 EFLAGS: 00000246
[   92.657350] RAX: 000000001c4c97e0 RBX: 00007fffd84d6ce0 RCX: 000000001c4bf3e0
[   92.657391] RDX: 0000000000000002 RSI: 0000000000000014 RDI: 0000000000000000
[   92.657431] RBP: 00007fffd84d6d80 R08: 0000000000000000 R09: 0000000000000001
[   92.657474] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd84d6cd4
[   92.657517] R13: 0000000000000014 R14: 00007fffd84d6e20 R15: 0000000000000000
[   92.657563]  </TASK>
[   92.657577] ---[ end trace 0000000000000000 ]---
[   92.657761] ------------[ cut here ]------------
[   92.657789] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/204
[   92.657845] Modules linked in:
[   92.657867] CPU: 3 UID: 0 PID: 204 Comm: packetdrill Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[   92.657921] Tainted: [W]=WARN
[   92.657940] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   92.657976] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[   92.658005] 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
[   92.658112] RSP: 0018:ff82f7ea8047fbf8 EFLAGS: 00010286
[   92.658142] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   92.658186] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff3286d84188f500
[   92.658227] RBP: 0000000000000000 R08: ff3286d84183fb50 R09: ff3286d84687a830
[   92.658270] R10: ff3286d844d54118 R11: fefefefefefefeff R12: 0000000000000000
[   92.658311] R13: 0000000000000011 R14: ff3286d844d54000 R15: ff3286d84188f500
[   92.658358] FS:  0000000000000000(0000) GS:ff3286d8cd816000(0000) knlGS:0000000000000000
[   92.658400] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   92.658439] CR2: 00007f72bbd24620 CR3: 0000000030e42006 CR4: 0000000000771ef0
[   92.658483] PKRU: 55555554
[   92.658498] Call Trace:
[   92.658512]  <TASK>
[   92.658527]  unregister_netdevice_many_notify+0x877/0x9d0
[   92.658556]  unregister_netdevice_queue+0x9e/0xd0
[   92.658588]  __tun_detach+0x591/0x5b0
[   92.658614]  tun_chr_close+0x3f/0xc0
[   92.658634]  __fput+0xe8/0x2c0
[   92.658658]  task_work_run+0x63/0xa0
[   92.658679]  do_exit+0x2c1/0xba0
[   92.658701]  do_group_exit+0x2d/0xc0
[   92.658728]  get_signal+0x82e/0x900
[   92.658750]  ? save_fpregs_to_fpstate+0x4a/0xa0
[   92.658780]  arch_do_signal_or_restart+0x77/0x2b0
[   92.658809]  ? __schedule+0x3ff/0x1050
[   92.658831]  ? schedule+0x27/0xd0
[   92.658851]  irqentry_exit+0x1f5/0x540
[   92.658874]  ? __sysvec_call_function_single+0x20/0xd0
[   92.658910]  asm_sysvec_call_function_single+0x1a/0x20
[   92.658941] RIP: 0033:0x45d43d
[   92.658962] Code: Unable to access opcode bytes at 0x45d413.
[   92.658997] RSP: 002b:00007fffd84d6ca8 EFLAGS: 00000246
[   92.659027] RAX: 000000001c4c97e0 RBX: 00007fffd84d6ce0 RCX: 000000001c4bf3e0
[   92.659068] RDX: 0000000000000002 RSI: 0000000000000014 RDI: 0000000000000000
[   92.659115] RBP: 00007fffd84d6d80 R08: 0000000000000000 R09: 0000000000000001
[   92.659160] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd84d6cd4
[   92.659202] R13: 0000000000000014 R14: 00007fffd84d6e20 R15: 0000000000000000
[   92.659248]  </TASK>
[   92.659261] ---[ end trace 0000000000000000 ]---
[   92.670240] ------------[ cut here ]------------
[   92.670317] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#2: kworker/u16:0/12
[   92.670416] Modules linked in:
[   92.670475] CPU: 2 UID: 0 PID: 12 Comm: kworker/u16:0 Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[   92.670572] Tainted: [W]=WARN
[   92.670627] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   92.670697] Workqueue: netns cleanup_net
[   92.670757] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[   92.670821] 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
[   92.670964] RSP: 0018:ff82f7ea80067c78 EFLAGS: 00010286
[   92.671028] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   92.671119] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff3286d842fbbe00
[   92.671197] RBP: 0000000000000000 R08: ff3286d8431d5490 R09: ff3286d84789682c
[   92.671276] R10: ff3286d843012118 R11: fefefefefefefeff R12: 0000000000000000
[   92.671354] R13: 0000000000000011 R14: ff3286d843012000 R15: ff3286d842fbbe00
[   92.671435] FS:  0000000000000000(0000) GS:ff3286d8cd796000(0000) knlGS:0000000000000000
[   92.671516] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   92.671587] CR2: 00007f6a050279dc CR3: 0000000030e42004 CR4: 0000000000771ef0
[   92.671667] PKRU: 55555554
[   92.671715] Call Trace:
[   92.671765]  <TASK>
[   92.671814]  unregister_netdevice_many_notify+0x877/0x9d0
[   92.671879]  default_device_exit_batch+0x318/0x390
[   92.671948]  ops_undo_list+0x10b/0x240
[   92.672007]  cleanup_net+0x1d7/0x2e0
[   92.672066]  process_one_work+0x162/0x360
[   92.672133]  worker_thread+0x16e/0x2d0
[   92.672191]  ? rescuer_thread+0x510/0x510
[   92.672249]  kthread+0xe1/0x120
[   92.672313]  ? kthread_park+0xa0/0xa0
[   92.672370]  ret_from_fork+0x16d/0x250
[   92.672427]  ? kthread_park+0xa0/0xa0
[   92.672484]  ret_from_fork_asm+0x11/0x20
[   92.672544]  </TASK>
[   92.672594] ---[ end trace 0000000000000000 ]---