[  547.841267] ------------[ cut here ]------------
[  547.841315] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: unshare/690
[  547.841366] Modules linked in:
[  547.841389] CPU: 0 UID: 0 PID: 690 Comm: unshare Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[  547.841447] Tainted: [W]=WARN
[  547.841469] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  547.841501] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[  547.841535] 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
[  547.841632] RSP: 0018:ff71f0c380a77cc8 EFLAGS: 00010286
[  547.841663] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[  547.841704] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff23231081842600
[  547.841747] RBP: 0000000000000000 R08: ff2323108324f890 R09: ff23231082dfe02c
[  547.841787] R10: ff232310819bf118 R11: fefefefefefefeff R12: 0000000000000000
[  547.841829] R13: 0000000000000010 R14: ff232310819bf000 R15: ff23231081842600
[  547.841878] FS:  00007fdada867740(0000) GS:ff23231129696000(0000) knlGS:0000000000000000
[  547.841928] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  547.841962] CR2: 0000562c300c6008 CR3: 00000000030ac002 CR4: 0000000000771ef0
[  547.842009] PKRU: 55555554
[  547.842024] Call Trace:
[  547.842044]  <TASK>
[  547.842059]  rtmsg_ifinfo+0x3c/0xa0
[  547.842081]  register_netdevice+0x889/0x9f0
[  547.842103]  register_netdev+0x1e/0x30
[  547.842123]  loopback_net_init+0x57/0xb0
[  547.842149]  ? vsock_sysctl_init_net+0xb6/0x140
[  547.842182]  ops_init+0x68/0x140
[  547.842206]  setup_net+0x85/0x150
[  547.842228]  copy_net_ns+0xf5/0x200
[  547.842250]  create_new_namespaces+0x117/0x2f0
[  547.842274]  unshare_nsproxy_namespaces+0x85/0xb0
[  547.842302]  ksys_unshare+0x346/0x5e0
[  547.842324]  __x64_sys_unshare+0x12/0x20
[  547.842351]  do_syscall_64+0x104/0xfc0
[  547.842380]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[  547.842409] RIP: 0033:0x7fdada962bcb
[  547.842430] 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
[  547.842519] RSP: 002b:00007ffc9010ee38 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
[  547.842562] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fdada962bcb
[  547.842606] RDX: 0000000000000000 RSI: 00007ffc9010eba0 RDI: 0000000040000000
[  547.842648] RBP: 00007ffc9010f1c0 R08: 00007ffc9010ed90 R09: 0000000000000000
[  547.842689] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000040000000
[  547.842740] R13: 0000000000000000 R14: 00000000ffffffff R15: 0000562bff22bb68
[  547.842784]  </TASK>
[  547.842797] ---[ end trace 0000000000000000 ]---
[  547.843425] ------------[ cut here ]------------
[  547.843454] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: packetdrill/690
[  547.843512] Modules linked in:
[  547.843534] CPU: 0 UID: 0 PID: 690 Comm: packetdrill Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[  547.843591] Tainted: [W]=WARN
[  547.843613] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  547.843650] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[  547.843679] 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
[  547.843788] RSP: 0018:ff71f0c380a77d68 EFLAGS: 00010286
[  547.843818] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[  547.843862] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff23231081842600
[  547.843906] RBP: 0000000000000000 R08: ff23231083142150 R09: ff23231084489030
[  547.843956] R10: ff232310831b8118 R11: fefefefefefefeff R12: 0000000000000000
[  547.844002] R13: 0000000000000010 R14: ff232310831b8000 R15: ff23231081842600
[  547.844048] FS:  0000000011994400(0000) GS:ff23231129696000(0000) knlGS:0000000000000000
[  547.844086] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  547.844119] CR2: 00007f8c9676c000 CR3: 0000000003093003 CR4: 0000000000771ef0
[  547.844163] PKRU: 55555554
[  547.844177] Call Trace:
[  547.844193]  <TASK>
[  547.844208]  rtmsg_ifinfo+0x3c/0xa0
[  547.844231]  register_netdevice+0x889/0x9f0
[  547.844258]  __tun_chr_ioctl+0x83c/0x16c0
[  547.844281]  ? do_sys_openat2+0x9a/0xe0
[  547.844305]  __x64_sys_ioctl+0xa1/0xe0
[  547.844331]  do_syscall_64+0x104/0xfc0
[  547.844365]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[  547.844393] RIP: 0033:0x47cc8d
[  547.844416] 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
[  547.844517] RSP: 002b:00007ffec8a71b00 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  547.844560] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[  547.844602] RDX: 00007ffec8a71b80 RSI: 00000000400454ca RDI: 0000000000000005
[  547.844646] RBP: 00007ffec8a71b50 R08: 0000000000000000 R09: 0000000000000000
[  547.844690] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffec8a72058
[  547.844737] R13: 00007ffec8a720d8 R14: 0000000000000002 R15: 0000000000543540
[  547.844778]  </TASK>
[  547.844793] ---[ end trace 0000000000000000 ]---
[  547.844835] ------------[ cut here ]------------
[  547.844862] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: packetdrill/690
[  547.844907] Modules linked in:
[  547.844933] CPU: 0 UID: 0 PID: 690 Comm: packetdrill Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[  547.844988] Tainted: [W]=WARN
[  547.845011] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  547.845043] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[  547.845070] 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
[  547.845166] RSP: 0018:ff71f0c380a77d60 EFLAGS: 00010286
[  547.845196] RAX: 00000000ffffffa6 RBX: 0000000000000000 RCX: 0000000000000000
[  547.845238] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff23231081842600
[  547.845281] RBP: 0000000000000002 R08: ff23231083142150 R09: ff23231084489030
[  547.845315] R10: ff232310831b8118 R11: fefefefefefefeff R12: 0000000000000000
[  547.845358] R13: 0000000000000010 R14: ff232310831b8000 R15: ff23231081842600
[  547.845404] FS:  0000000011994400(0000) GS:ff23231129696000(0000) knlGS:0000000000000000
[  547.845444] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  547.845478] CR2: 00007f8c9676c000 CR3: 0000000003093003 CR4: 0000000000771ef0
[  547.845523] PKRU: 55555554
[  547.845537] Call Trace:
[  547.845550]  <TASK>
[  547.845566]  rtnetlink_event+0x6e/0xb0
[  547.845588]  notifier_call_chain+0x6d/0x100
[  547.845609]  netdev_update_features+0x56/0x60
[  547.845639]  __tun_chr_ioctl+0xbf1/0x16c0
[  547.845661]  ? file_init_path+0x62/0x120
[  547.845681]  __x64_sys_ioctl+0xa1/0xe0
[  547.845704]  do_syscall_64+0x104/0xfc0
[  547.845728]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[  547.845754] RIP: 0033:0x47cc8d
[  547.845775] 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
[  547.845872] RSP: 002b:00007ffec8a71b40 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  547.845915] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[  547.845953] RDX: 000000000000000f RSI: 00000000400454d0 RDI: 0000000000000005
[  547.846000] RBP: 00007ffec8a71b90 R08: 0000000000000005 R09: 0000000000001ff0
[  547.846042] R10: 0000000000000003 R11: 0000000000000246 R12: 00007ffec8a72058
[  547.846084] R13: 00007ffec8a720d8 R14: 0000000000000002 R15: 0000000000543540
[  547.846126]  </TASK>
[  547.846140] ---[ end trace 0000000000000000 ]---
[  547.846180] ------------[ cut here ]------------
[  547.846206] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: packetdrill/690
[  547.846258] Modules linked in:
[  547.846278] CPU: 0 UID: 0 PID: 690 Comm: packetdrill Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[  547.846340] Tainted: [W]=WARN
[  547.846363] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  547.846389] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[  547.846420] 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
[  547.846517] RSP: 0018:ff71f0c380a77c10 EFLAGS: 00010286
[  547.846547] RAX: 00000000ffffffa6 RBX: 0000000000000001 RCX: 0000000000000000
[  547.846589] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff23231081842600
[  547.846632] RBP: 0000000000000000 R08: ff23231083142150 R09: ff232310819ba030
[  547.846674] R10: ff232310831b8118 R11: fefefefefefefeff R12: 0000000000000000
[  547.846720] R13: 0000000000000010 R14: ff232310831b8000 R15: ff23231081842600
[  547.846764] FS:  0000000011994400(0000) GS:ff23231129696000(0000) knlGS:0000000000000000
[  547.846804] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  547.846839] CR2: 00007f8c9676c000 CR3: 0000000003093003 CR4: 0000000000771ef0
[  547.846880] PKRU: 55555554
[  547.846892] Call Trace:
[  547.846907]  <TASK>
[  547.846920]  rtmsg_ifinfo+0x3c/0xa0
[  547.846940]  __dev_notify_flags+0xb1/0xf0
[  547.846964]  netif_change_flags+0x54/0x70
[  547.846983]  dev_change_flags+0x45/0x80
[  547.847006]  devinet_ioctl+0x607/0x7f0
[  547.847031]  inet_ioctl+0x229/0x240
[  547.847052]  ? __rtnl_unlock+0x35/0x60
[  547.847074]  sock_do_ioctl+0x75/0x140
[  547.847099]  __x64_sys_ioctl+0xa1/0xe0
[  547.847122]  do_syscall_64+0x104/0xfc0
[  547.847145]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[  547.847172] RIP: 0033:0x47cc8d
[  547.847193] 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
[  547.847299] RSP: 002b:00007ffec8a71b20 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  547.847340] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[  547.847388] RDX: 00007ffec8a71b90 RSI: 0000000000008914 RDI: 0000000000000006
[  547.847431] RBP: 00007ffec8a71b70 R08: 0000000000000005 R09: 0000000000001ff0
[  547.847474] R10: 0000000000000003 R11: 0000000000000246 R12: 00007ffec8a72058
[  547.847512] R13: 00007ffec8a720d8 R14: 0000000000000002 R15: 0000000000543540
[  547.847555]  </TASK>
[  547.847569] ---[ end trace 0000000000000000 ]---
[  592.826334] ------------[ cut here ]------------
[  592.826403] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: packetdrill/690
[  592.826470] Modules linked in:
[  592.826507] CPU: 0 UID: 0 PID: 690 Comm: packetdrill Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[  592.826571] Tainted: [W]=WARN
[  592.826598] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  592.826631] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[  592.826659] 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
[  592.826762] RSP: 0018:ff71f0c380a77b58 EFLAGS: 00010286
[  592.826790] RAX: 00000000ffffffa6 RBX: 0000000000000041 RCX: 0000000000000000
[  592.826835] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff2323108312dc00
[  592.826884] RBP: 0000000000000000 R08: ff23231083142150 R09: ff232310819ba030
[  592.826924] R10: ff232310831b8118 R11: fefefefefefefeff R12: 0000000000000000
[  592.826966] R13: 0000000000000010 R14: ff232310831b8000 R15: ff2323108312dc00
[  592.827159] FS:  0000000000000000(0000) GS:ff23231129696000(0000) knlGS:0000000000000000
[  592.827204] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  592.827244] CR2: 00007f8c9676c000 CR3: 0000000020c42004 CR4: 0000000000771ef0
[  592.827289] PKRU: 55555554
[  592.827303] Call Trace:
[  592.827319]  <TASK>
[  592.827336]  rtmsg_ifinfo+0x3c/0xa0
[  592.827362]  netif_close_many+0xed/0x190
[  592.827387]  unregister_netdevice_many_notify+0x267/0x9d0
[  592.827412]  ? __queue_work+0x141/0x550
[  592.827437]  unregister_netdevice_queue+0x9e/0xd0
[  592.827463]  __tun_detach+0x591/0x5b0
[  592.827484]  tun_chr_close+0x3f/0xc0
[  592.827507]  __fput+0xe8/0x2c0
[  592.827531]  task_work_run+0x63/0xa0
[  592.827556]  do_exit+0x2c1/0xba0
[  592.827581]  do_group_exit+0x2d/0xc0
[  592.827603]  get_signal+0x82e/0x900
[  592.827628]  ? __d_alloc+0x40/0x200
[  592.827654]  ? alloc_empty_file+0x3f/0xd0
[  592.827675]  arch_do_signal_or_restart+0x77/0x2b0
[  592.827707]  ? alloc_file_pseudo+0xc1/0x110
[  592.827728]  ? __sys_socket+0xda/0x130
[  592.827751]  exit_to_user_mode_loop+0x75/0x4a0
[  592.827783]  do_syscall_64+0x439/0xfc0
[  592.827808]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[  592.827844] RIP: 0033:0x47ea2b
[  592.827873] Code: Unable to access opcode bytes at 0x47ea01.
[  592.827908] RSP: 002b:00007ffec8a715a8 EFLAGS: 00000202 ORIG_RAX: 0000000000000029
[  592.827952] RAX: 0000000000000007 RBX: 00007ffec8a71680 RCX: 000000000047ea2b
[  592.827993] RDX: 0000000000000000 RSI: 0000000000080003 RDI: 0000000000000010
[  592.828035] RBP: 00007ffec8a715e0 R08: 0000000000000041 R09: 00000000119953e0
[  592.828078] R10: 0000000000000040 R11: 0000000000000202 R12: 00007ffec8a72058
[  592.828119] R13: 00007ffec8a720d8 R14: 00007ffec8a71b58 R15: 0000000000543540
[  592.828159]  </TASK>
[  592.828173] ---[ end trace 0000000000000000 ]---
[  592.828373] ------------[ cut here ]------------
[  592.828399] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: packetdrill/690
[  592.828450] Modules linked in:
[  592.828470] CPU: 0 UID: 0 PID: 690 Comm: packetdrill Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[  592.828528] Tainted: [W]=WARN
[  592.828551] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  592.828585] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[  592.828612] 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
[  592.828708] RSP: 0018:ff71f0c380a77bc8 EFLAGS: 00010286
[  592.828735] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[  592.828769] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff2323108312dc00
[  592.828809] RBP: 0000000000000000 R08: ff23231083142150 R09: ff23231086510030
[  592.828853] R10: ff232310831b8118 R11: fefefefefefefeff R12: 0000000000000000
[  592.828901] R13: 0000000000000011 R14: ff232310831b8000 R15: ff2323108312dc00
[  592.828948] FS:  0000000000000000(0000) GS:ff23231129696000(0000) knlGS:0000000000000000
[  592.828993] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  592.829032] CR2: 00007f883e4e5680 CR3: 0000000020c42004 CR4: 0000000000771ef0
[  592.829075] PKRU: 55555554
[  592.829089] Call Trace:
[  592.829105]  <TASK>
[  592.829121]  unregister_netdevice_many_notify+0x877/0x9d0
[  592.829153]  unregister_netdevice_queue+0x9e/0xd0
[  592.829182]  __tun_detach+0x591/0x5b0
[  592.829204]  tun_chr_close+0x3f/0xc0
[  592.829223]  __fput+0xe8/0x2c0
[  592.829248]  task_work_run+0x63/0xa0
[  592.829269]  do_exit+0x2c1/0xba0
[  592.829290]  do_group_exit+0x2d/0xc0
[  592.829312]  get_signal+0x82e/0x900
[  592.829334]  ? __d_alloc+0x40/0x200
[  592.829355]  ? alloc_empty_file+0x3f/0xd0
[  592.829376]  arch_do_signal_or_restart+0x77/0x2b0
[  592.829407]  ? alloc_file_pseudo+0xc1/0x110
[  592.829429]  ? __sys_socket+0xda/0x130
[  592.829451]  exit_to_user_mode_loop+0x75/0x4a0
[  592.829480]  do_syscall_64+0x439/0xfc0
[  592.829501]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[  592.829529] RIP: 0033:0x47ea2b
[  592.829550] Code: Unable to access opcode bytes at 0x47ea01.
[  592.829586] RSP: 002b:00007ffec8a715a8 EFLAGS: 00000202 ORIG_RAX: 0000000000000029
[  592.829632] RAX: 0000000000000007 RBX: 00007ffec8a71680 RCX: 000000000047ea2b
[  592.829669] RDX: 0000000000000000 RSI: 0000000000080003 RDI: 0000000000000010
[  592.829709] RBP: 00007ffec8a715e0 R08: 0000000000000041 R09: 00000000119953e0
[  592.829751] R10: 0000000000000040 R11: 0000000000000202 R12: 00007ffec8a72058
[  592.829790] R13: 00007ffec8a720d8 R14: 00007ffec8a71b58 R15: 0000000000543540
[  592.829833]  </TASK>
[  592.829848] ---[ end trace 0000000000000000 ]---
[  592.841115] ------------[ cut here ]------------
[  592.841155] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#1: kworker/u16:0/12
[  592.841219] Modules linked in:
[  592.841246] CPU: 1 UID: 0 PID: 12 Comm: kworker/u16:0 Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[  592.841294] Tainted: [W]=WARN
[  592.841317] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  592.841359] Workqueue: netns cleanup_net
[  592.841382] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[  592.841410] 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
[  592.841506] RSP: 0018:ff71f0c380067c78 EFLAGS: 00010286
[  592.841532] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[  592.841572] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff2323108182b100
[  592.841611] RBP: 0000000000000000 R08: ff2323108324f890 R09: ff2323108463702c
[  592.841653] R10: ff232310819bf118 R11: fefefefefefefeff R12: 0000000000000000
[  592.841694] R13: 0000000000000011 R14: ff232310819bf000 R15: ff2323108182b100
[  592.841738] FS:  0000000000000000(0000) GS:ff23231129716000(0000) knlGS:0000000000000000
[  592.841781] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  592.841815] CR2: 00007f883e35e770 CR3: 0000000020c42001 CR4: 0000000000771ef0
[  592.841868] PKRU: 55555554
[  592.841884] Call Trace:
[  592.841900]  <TASK>
[  592.841915]  unregister_netdevice_many_notify+0x877/0x9d0
[  592.841943]  default_device_exit_batch+0x318/0x390
[  592.841972]  ops_undo_list+0x10b/0x240
[  592.842005]  cleanup_net+0x1d7/0x2e0
[  592.842027]  process_one_work+0x162/0x360
[  592.842050]  worker_thread+0x16e/0x2d0
[  592.842074]  ? rescuer_thread+0x510/0x510
[  592.842095]  kthread+0xe1/0x120
[  592.842115]  ? kthread_park+0xa0/0xa0
[  592.842138]  ret_from_fork+0x16d/0x250
[  592.842160]  ? kthread_park+0xa0/0xa0
[  592.842182]  ret_from_fork_asm+0x11/0x20
[  592.842207]  </TASK>
[  592.842222] ---[ end trace 0000000000000000 ]---