[  229.613827] ------------[ cut here ]------------
[  229.613912] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#2: unshare/381
[  229.614003] Modules linked in:
[  229.614060] CPU: 2 UID: 0 PID: 381 Comm: unshare Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[  229.614151] Tainted: [W]=WARN
[  229.614206] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  229.614275] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[  229.614338] 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
[  229.614475] RSP: 0018:ff77a99b806f7cc8 EFLAGS: 00010286
[  229.614538] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[  229.614615] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff2556dc818ea200
[  229.614692] RBP: 0000000000000000 R08: ff2556dc832d8e10 R09: ff2556dc8202802c
[  229.614768] R10: ff2556dc82e9d118 R11: fefefefefefefeff R12: 0000000000000000
[  229.614856] R13: 0000000000000010 R14: ff2556dc82e9d000 R15: ff2556dc818ea200
[  229.614938] FS:  00007fc456218740(0000) GS:ff2556dd07f96000(0000) knlGS:0000000000000000
[  229.615017] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  229.615087] CR2: 0000561b412be008 CR3: 0000000003125003 CR4: 0000000000771ef0
[  229.615165] PKRU: 55555554
[  229.615213] Call Trace:
[  229.615263]  <TASK>
[  229.615312]  rtmsg_ifinfo+0x3c/0xa0
[  229.615369]  register_netdevice+0x889/0x9f0
[  229.615427]  register_netdev+0x1e/0x30
[  229.615484]  loopback_net_init+0x57/0xb0
[  229.615543]  ? vsock_sysctl_init_net+0xb6/0x140
[  229.615609]  ops_init+0x68/0x140
[  229.615667]  setup_net+0x85/0x150
[  229.615724]  copy_net_ns+0xf5/0x200
[  229.615782]  create_new_namespaces+0x117/0x2f0
[  229.615860]  unshare_nsproxy_namespaces+0x85/0xb0
[  229.615924]  ksys_unshare+0x346/0x5e0
[  229.615983]  __x64_sys_unshare+0x12/0x20
[  229.616040]  do_syscall_64+0x104/0xfc0
[  229.616099]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[  229.616164] RIP: 0033:0x7fc456313bcb
[  229.616221] 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
[  229.616352] RSP: 002b:00007fff38014938 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
[  229.616430] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fc456313bcb
[  229.616506] RDX: 0000000000000000 RSI: 00007fff380146a0 RDI: 0000000040000000
[  229.616583] RBP: 00007fff38014cc0 R08: 00007fff38014890 R09: 0000000000000000
[  229.616660] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000040000000
[  229.616738] R13: 0000000000000000 R14: 00000000ffffffff R15: 0000561b2ed71b68
[  229.616824]  </TASK>
[  229.616879] ---[ end trace 0000000000000000 ]---
[  229.617554] ------------[ cut here ]------------
[  229.617618] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#2: packetdrill/381
[  229.617705] Modules linked in:
[  229.617762] CPU: 2 UID: 0 PID: 381 Comm: packetdrill Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[  229.617873] Tainted: [W]=WARN
[  229.617927] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  229.617996] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[  229.618060] 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
[  229.618190] RSP: 0018:ff77a99b806f7d68 EFLAGS: 00010286
[  229.618253] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[  229.618329] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff2556dc818ea200
[  229.618405] RBP: 0000000000000000 R08: ff2556dc81ce1c90 R09: ff2556dc86a9c030
[  229.618483] R10: ff2556dc86938118 R11: fefefefefefefeff R12: 0000000000000000
[  229.618560] R13: 0000000000000010 R14: ff2556dc86938000 R15: ff2556dc818ea200
[  229.618641] FS:  000000003f3a8400(0000) GS:ff2556dd07f96000(0000) knlGS:0000000000000000
[  229.618721] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  229.618791] CR2: 00007f670af97000 CR3: 0000000003193004 CR4: 0000000000771ef0
[  229.618883] PKRU: 55555554
[  229.618932] Call Trace:
[  229.618980]  <TASK>
[  229.619029]  rtmsg_ifinfo+0x3c/0xa0
[  229.619085]  register_netdevice+0x889/0x9f0
[  229.619142]  __tun_chr_ioctl+0x83c/0x16c0
[  229.619201]  ? do_sys_openat2+0x9a/0xe0
[  229.619260]  __x64_sys_ioctl+0xa1/0xe0
[  229.619318]  do_syscall_64+0x104/0xfc0
[  229.619375]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[  229.619442] RIP: 0033:0x47cc8d
[  229.619498] 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
[  229.619631] RSP: 002b:00007ffe86099530 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  229.619709] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[  229.619785] RDX: 00007ffe860995b0 RSI: 00000000400454ca RDI: 0000000000000005
[  229.619875] RBP: 00007ffe86099580 R08: 0000000000000000 R09: 0000000000000000
[  229.619955] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe86099a88
[  229.620035] R13: 00007ffe86099b08 R14: 0000000000000002 R15: 0000000000543540
[  229.620111]  </TASK>
[  229.620159] ---[ end trace 0000000000000000 ]---
[  229.620240] ------------[ cut here ]------------
[  229.620303] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#2: packetdrill/381
[  229.620389] Modules linked in:
[  229.620448] CPU: 2 UID: 0 PID: 381 Comm: packetdrill Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[  229.620540] Tainted: [W]=WARN
[  229.620594] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  229.620664] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[  229.620727] 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
[  229.620875] RSP: 0018:ff77a99b806f7d60 EFLAGS: 00010286
[  229.620940] RAX: 00000000ffffffa6 RBX: 0000000000000000 RCX: 0000000000000000
[  229.621017] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff2556dc818ea200
[  229.621094] RBP: 0000000000000002 R08: ff2556dc81ce1c90 R09: ff2556dc86a9c030
[  229.621169] R10: ff2556dc86938118 R11: fefefefefefefeff R12: 0000000000000000
[  229.621245] R13: 0000000000000010 R14: ff2556dc86938000 R15: ff2556dc818ea200
[  229.621324] FS:  000000003f3a8400(0000) GS:ff2556dd07f96000(0000) knlGS:0000000000000000
[  229.621402] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  229.621471] CR2: 00007f670af97000 CR3: 0000000003193004 CR4: 0000000000771ef0
[  229.621551] PKRU: 55555554
[  229.621599] Call Trace:
[  229.621647]  <TASK>
[  229.621696]  rtnetlink_event+0x6e/0xb0
[  229.621752]  notifier_call_chain+0x6d/0x100
[  229.621817]  netdev_update_features+0x56/0x60
[  229.621890]  __tun_chr_ioctl+0xbf1/0x16c0
[  229.621947]  ? file_init_path+0x62/0x120
[  229.622005]  __x64_sys_ioctl+0xa1/0xe0
[  229.622062]  do_syscall_64+0x104/0xfc0
[  229.622119]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[  229.622182] RIP: 0033:0x47cc8d
[  229.622239] 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
[  229.622374] RSP: 002b:00007ffe86099570 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  229.622456] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[  229.622534] RDX: 000000000000000f RSI: 00000000400454d0 RDI: 0000000000000005
[  229.622611] RBP: 00007ffe860995c0 R08: 0000000000000000 R09: 0000000000000000
[  229.622686] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe86099a88
[  229.622763] R13: 00007ffe86099b08 R14: 0000000000000002 R15: 0000000000543540
[  229.622848]  </TASK>
[  229.622903] ---[ end trace 0000000000000000 ]---
[  229.622986] ------------[ cut here ]------------
[  229.623048] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#2: packetdrill/381
[  229.623133] Modules linked in:
[  229.623189] CPU: 2 UID: 0 PID: 381 Comm: packetdrill Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[  229.623281] Tainted: [W]=WARN
[  229.623336] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  229.623404] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[  229.623467] 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
[  229.623598] RSP: 0018:ff77a99b806f7c10 EFLAGS: 00010286
[  229.623662] RAX: 00000000ffffffa6 RBX: 0000000000000001 RCX: 0000000000000000
[  229.623739] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff2556dc818ea200
[  229.623821] RBP: 0000000000000000 R08: ff2556dc81ce1c90 R09: ff2556dc8202b030
[  229.623907] R10: ff2556dc86938118 R11: fefefefefefefeff R12: 0000000000000000
[  229.623984] R13: 0000000000000010 R14: ff2556dc86938000 R15: ff2556dc818ea200
[  229.624064] FS:  000000003f3a8400(0000) GS:ff2556dd07f96000(0000) knlGS:0000000000000000
[  229.624141] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  229.624211] CR2: 00007f670af97000 CR3: 0000000003193004 CR4: 0000000000771ef0
[  229.624293] PKRU: 55555554
[  229.624341] Call Trace:
[  229.624388]  <TASK>
[  229.624438]  rtmsg_ifinfo+0x3c/0xa0
[  229.624494]  __dev_notify_flags+0xb1/0xf0
[  229.624551]  netif_change_flags+0x54/0x70
[  229.624609]  dev_change_flags+0x45/0x80
[  229.624665]  devinet_ioctl+0x607/0x7f0
[  229.624724]  inet_ioctl+0x229/0x240
[  229.624781]  ? __rtnl_unlock+0x35/0x60
[  229.624841]  sock_do_ioctl+0x75/0x140
[  229.624906]  __x64_sys_ioctl+0xa1/0xe0
[  229.624962]  do_syscall_64+0x104/0xfc0
[  229.625019]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[  229.625082] RIP: 0033:0x47cc8d
[  229.625138] 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
[  229.625274] RSP: 002b:00007ffe86099550 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  229.625350] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[  229.625430] RDX: 00007ffe860995c0 RSI: 0000000000008914 RDI: 0000000000000006
[  229.625506] RBP: 00007ffe860995a0 R08: 0000000000000000 R09: 0000000000000000
[  229.625582] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe86099a88
[  229.625658] R13: 00007ffe86099b08 R14: 0000000000000002 R15: 0000000000543540
[  229.625736]  </TASK>
[  229.625784] ---[ end trace 0000000000000000 ]---
[  274.599994] ------------[ cut here ]------------
[  274.600123] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#2: packetdrill/381
[  274.600218] Modules linked in:
[  274.600277] CPU: 2 UID: 0 PID: 381 Comm: packetdrill Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[  274.600367] Tainted: [W]=WARN
[  274.600422] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  274.600492] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[  274.600556] 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
[  274.600690] RSP: 0018:ff77a99b806f7b58 EFLAGS: 00010286
[  274.600754] RAX: 00000000ffffffa6 RBX: 0000000000000041 RCX: 0000000000000000
[  274.600839] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff2556dc81d57f00
[  274.600914] RBP: 0000000000000000 R08: ff2556dc81ce1c90 R09: ff2556dc8202b030
[  274.600992] R10: ff2556dc86938118 R11: fefefefefefefeff R12: 0000000000000000
[  274.601076] R13: 0000000000000010 R14: ff2556dc86938000 R15: ff2556dc81d57f00
[  274.601157] FS:  0000000000000000(0000) GS:ff2556dd07f96000(0000) knlGS:0000000000000000
[  274.601235] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  274.601303] CR2: 00007f670af97000 CR3: 0000000004a42001 CR4: 0000000000771ef0
[  274.601382] PKRU: 55555554
[  274.601429] Call Trace:
[  274.601478]  <TASK>
[  274.601527]  rtmsg_ifinfo+0x3c/0xa0
[  274.601583]  netif_close_many+0xed/0x190
[  274.601641]  unregister_netdevice_many_notify+0x267/0x9d0
[  274.601704]  ? __queue_work+0x141/0x550
[  274.601763]  unregister_netdevice_queue+0x9e/0xd0
[  274.602042]  __tun_detach+0x591/0x5b0
[  274.602109]  tun_chr_close+0x3f/0xc0
[  274.602166]  __fput+0xe8/0x2c0
[  274.602225]  task_work_run+0x63/0xa0
[  274.602283]  do_exit+0x2c1/0xba0
[  274.602342]  do_group_exit+0x2d/0xc0
[  274.602398]  get_signal+0x82e/0x900
[  274.602456]  arch_do_signal_or_restart+0x77/0x2b0
[  274.602521]  exit_to_user_mode_loop+0x75/0x4a0
[  274.602588]  do_syscall_64+0x439/0xfc0
[  274.602647]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[  274.602710] RIP: 0033:0x4c2d9e
[  274.602768] Code: Unable to access opcode bytes at 0x4c2d74.
[  274.602840] RSP: 002b:00007ffe86098ee0 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[  274.602918] RAX: 0000000000000014 RBX: 0000000000000016 RCX: 00000000004c2d9e
[  274.602994] RDX: 0000000000000014 RSI: 00007ffe86098fc0 RDI: 0000000000000007
[  274.603074] RBP: 00007ffe86098ef0 R08: 00007ffe86098f80 R09: 000000000000000c
[  274.603149] R10: 0000000000000000 R11: 0000000000000202 R12: 000000003f3b1e30
[  274.603224] R13: 00007ffe86099b08 R14: 00007ffe860990b0 R15: 0000000000543540
[  274.603301]  </TASK>
[  274.603348] ---[ end trace 0000000000000000 ]---
[  274.603495] ------------[ cut here ]------------
[  274.603558] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#2: packetdrill/381
[  274.603646] Modules linked in:
[  274.603703] CPU: 2 UID: 0 PID: 381 Comm: packetdrill Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[  274.603797] Tainted: [W]=WARN
[  274.603858] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  274.603927] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[  274.603994] 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
[  274.604131] RSP: 0018:ff77a99b806f7bc8 EFLAGS: 00010286
[  274.604195] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[  274.604273] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff2556dc81d57f00
[  274.604349] RBP: 0000000000000000 R08: ff2556dc81ce1c90 R09: ff2556dc89295030
[  274.604424] R10: ff2556dc86938118 R11: fefefefefefefeff R12: 0000000000000000
[  274.604501] R13: 0000000000000011 R14: ff2556dc86938000 R15: ff2556dc81d57f00
[  274.604580] FS:  0000000000000000(0000) GS:ff2556dd07f96000(0000) knlGS:0000000000000000
[  274.604658] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  274.604727] CR2: 00007f670af97000 CR3: 0000000004a42001 CR4: 0000000000771ef0
[  274.604899] PKRU: 55555554
[  274.604949] Call Trace:
[  274.604997]  <TASK>
[  274.605053]  unregister_netdevice_many_notify+0x877/0x9d0
[  274.605117]  unregister_netdevice_queue+0x9e/0xd0
[  274.605180]  __tun_detach+0x591/0x5b0
[  274.605237]  tun_chr_close+0x3f/0xc0
[  274.605294]  __fput+0xe8/0x2c0
[  274.605351]  task_work_run+0x63/0xa0
[  274.605407]  do_exit+0x2c1/0xba0
[  274.605464]  do_group_exit+0x2d/0xc0
[  274.605521]  get_signal+0x82e/0x900
[  274.605582]  arch_do_signal_or_restart+0x77/0x2b0
[  274.605647]  exit_to_user_mode_loop+0x75/0x4a0
[  274.605711]  do_syscall_64+0x439/0xfc0
[  274.605768]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[  274.605837] RIP: 0033:0x4c2d9e
[  274.605893] Code: Unable to access opcode bytes at 0x4c2d74.
[  274.605961] RSP: 002b:00007ffe86098ee0 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[  274.606043] RAX: 0000000000000014 RBX: 0000000000000016 RCX: 00000000004c2d9e
[  274.606120] RDX: 0000000000000014 RSI: 00007ffe86098fc0 RDI: 0000000000000007
[  274.606196] RBP: 00007ffe86098ef0 R08: 00007ffe86098f80 R09: 000000000000000c
[  274.606272] R10: 0000000000000000 R11: 0000000000000202 R12: 000000003f3b1e30
[  274.606347] R13: 00007ffe86099b08 R14: 00007ffe860990b0 R15: 0000000000543540
[  274.606424]  </TASK>
[  274.606472] ---[ end trace 0000000000000000 ]---
[  274.612938] ------------[ cut here ]------------
[  274.612973] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#1: kworker/u16:1/64
[  274.613041] Modules linked in:
[  274.613067] CPU: 1 UID: 0 PID: 64 Comm: kworker/u16:1 Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[  274.613127] Tainted: [W]=WARN
[  274.613150] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  274.613187] Workqueue: netns cleanup_net
[  274.613212] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[  274.613242] 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
[  274.613338] RSP: 0018:ff77a99b80237c78 EFLAGS: 00010286
[  274.613367] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[  274.613402] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff2556dc81926800
[  274.613442] RBP: 0000000000000000 R08: ff2556dc832d8e10 R09: ff2556dc8694202c
[  274.613488] R10: ff2556dc82e9d118 R11: fefefefefefefeff R12: 0000000000000000
[  274.613533] R13: 0000000000000011 R14: ff2556dc82e9d000 R15: ff2556dc81926800
[  274.613582] FS:  0000000000000000(0000) GS:ff2556dd07f16000(0000) knlGS:0000000000000000
[  274.613629] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  274.613664] CR2: 00007fb9d63b8680 CR3: 0000000004a42006 CR4: 0000000000771ef0
[  274.613710] PKRU: 55555554
[  274.613723] Call Trace:
[  274.613736]  <TASK>
[  274.613751]  unregister_netdevice_many_notify+0x877/0x9d0
[  274.613780]  default_device_exit_batch+0x318/0x390
[  274.613815]  ops_undo_list+0x10b/0x240
[  274.613839]  cleanup_net+0x1d7/0x2e0
[  274.613860]  process_one_work+0x162/0x360
[  274.613883]  worker_thread+0x16e/0x2d0
[  274.613905]  ? rescuer_thread+0x510/0x510
[  274.613930]  kthread+0xe1/0x120
[  274.613953]  ? kthread_park+0xa0/0xa0
[  274.613979]  ret_from_fork+0x16d/0x250
[  274.614002]  ? kthread_park+0xa0/0xa0
[  274.614033]  ret_from_fork_asm+0x11/0x20
[  274.614057]  </TASK>
[  274.614072] ---[ end trace 0000000000000000 ]---