[   93.206321] ------------[ cut here ]------------
[   93.206370] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: unshare/250
[   93.206434] Modules linked in:
[   93.206461] CPU: 3 UID: 0 PID: 250 Comm: unshare Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[   93.206531] Tainted: [W]=WARN
[   93.206554] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   93.206591] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[   93.206623] 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
[   93.206729] RSP: 0018:ff6c7b1cc04dfcc8 EFLAGS: 00010286
[   93.206757] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   93.206810] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff2e1d1dc3132300
[   93.206865] RBP: 0000000000000000 R08: ff2e1d1dc3275d50 R09: ff2e1d1dc2e5d02c
[   93.206912] R10: ff2e1d1dc2955118 R11: fefefefefefefeff R12: 0000000000000000
[   93.206958] R13: 0000000000000010 R14: ff2e1d1dc2955000 R15: ff2e1d1dc3132300
[   93.207004] FS:  00007f2d34148740(0000) GS:ff2e1d1e70c16000(0000) knlGS:0000000000000000
[   93.207053] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   93.207095] CR2: 0000562d9195a008 CR3: 000000000327d006 CR4: 0000000000771ef0
[   93.207138] PKRU: 55555554
[   93.207153] Call Trace:
[   93.207168]  <TASK>
[   93.207184]  rtmsg_ifinfo+0x3c/0xa0
[   93.207206]  register_netdevice+0x889/0x9f0
[   93.207225]  register_netdev+0x1e/0x30
[   93.207247]  loopback_net_init+0x57/0xb0
[   93.207269]  ? vsock_sysctl_init_net+0xb6/0x140
[   93.207299]  ops_init+0x68/0x140
[   93.207322]  setup_net+0x85/0x150
[   93.207346]  copy_net_ns+0xf5/0x200
[   93.207371]  create_new_namespaces+0x117/0x2f0
[   93.207405]  unshare_nsproxy_namespaces+0x85/0xb0
[   93.207435]  ksys_unshare+0x346/0x5e0
[   93.207459]  __x64_sys_unshare+0x12/0x20
[   93.207484]  do_syscall_64+0x104/0xfc0
[   93.207507]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[   93.207534] RIP: 0033:0x7f2d34243bcb
[   93.207559] 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
[   93.207669] RSP: 002b:00007fff1d25a1c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
[   93.207705] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f2d34243bcb
[   93.207749] RDX: 0000000000000000 RSI: 00007fff1d259f30 RDI: 0000000040000000
[   93.207792] RBP: 00007fff1d25a550 R08: 00007fff1d25a120 R09: 0000000000000000
[   93.207839] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000040000000
[   93.207880] R13: 0000000000000000 R14: 00000000ffffffff R15: 0000562d8601db68
[   93.207929]  </TASK>
[   93.207946] ---[ end trace 0000000000000000 ]---
[   93.208543] ------------[ cut here ]------------
[   93.208574] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/250
[   93.208641] Modules linked in:
[   93.208666] CPU: 3 UID: 0 PID: 250 Comm: packetdrill Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[   93.208726] Tainted: [W]=WARN
[   93.208748] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   93.208780] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[   93.208810] 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
[   93.208911] RSP: 0018:ff6c7b1cc04dfd68 EFLAGS: 00010286
[   93.208941] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   93.208985] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff2e1d1dc3132300
[   93.209030] RBP: 0000000000000000 R08: ff2e1d1dc3224850 R09: ff2e1d1dc3147030
[   93.209075] R10: ff2e1d1dc4944118 R11: fefefefefefefeff R12: 0000000000000000
[   93.209118] R13: 0000000000000010 R14: ff2e1d1dc4944000 R15: ff2e1d1dc3132300
[   93.209173] FS:  000000003beb0400(0000) GS:ff2e1d1e70c16000(0000) knlGS:0000000000000000
[   93.209213] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   93.209243] CR2: 00007f56240c3000 CR3: 00000000032b0001 CR4: 0000000000771ef0
[   93.209285] PKRU: 55555554
[   93.209301] Call Trace:
[   93.209316]  <TASK>
[   93.209332]  rtmsg_ifinfo+0x3c/0xa0
[   93.209355]  register_netdevice+0x889/0x9f0
[   93.209377]  __tun_chr_ioctl+0x83c/0x16c0
[   93.209400]  ? do_sys_openat2+0x9a/0xe0
[   93.209430]  __x64_sys_ioctl+0xa1/0xe0
[   93.209461]  do_syscall_64+0x104/0xfc0
[   93.209488]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[   93.209513] RIP: 0033:0x47cc8d
[   93.209534] 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
[   93.209639] RSP: 002b:00007fff8728c050 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   93.209676] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[   93.209720] RDX: 00007fff8728c0d0 RSI: 00000000400454ca RDI: 0000000000000005
[   93.209759] RBP: 00007fff8728c0a0 R08: 0000000000000000 R09: 0000000000000000
[   93.209800] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff8728c5a8
[   93.209843] R13: 00007fff8728c628 R14: 0000000000000002 R15: 0000000000543540
[   93.209886]  </TASK>
[   93.209900] ---[ end trace 0000000000000000 ]---
[   93.209945] ------------[ cut here ]------------
[   93.209972] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/250
[   93.210024] Modules linked in:
[   93.210045] CPU: 3 UID: 0 PID: 250 Comm: packetdrill Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[   93.210104] Tainted: [W]=WARN
[   93.210126] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   93.210163] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[   93.210193] 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
[   93.210296] RSP: 0018:ff6c7b1cc04dfd60 EFLAGS: 00010286
[   93.210323] RAX: 00000000ffffffa6 RBX: 0000000000000000 RCX: 0000000000000000
[   93.210369] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff2e1d1dc3132300
[   93.210422] RBP: 0000000000000002 R08: ff2e1d1dc3224850 R09: ff2e1d1dc3147030
[   93.210467] R10: ff2e1d1dc4944118 R11: fefefefefefefeff R12: 0000000000000000
[   93.210515] R13: 0000000000000010 R14: ff2e1d1dc4944000 R15: ff2e1d1dc3132300
[   93.210562] FS:  000000003beb0400(0000) GS:ff2e1d1e70c16000(0000) knlGS:0000000000000000
[   93.210606] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   93.210658] CR2: 00007f56240c3000 CR3: 00000000032b0001 CR4: 0000000000771ef0
[   93.210695] PKRU: 55555554
[   93.210716] Call Trace:
[   93.210731]  <TASK>
[   93.210746]  rtnetlink_event+0x6e/0xb0
[   93.210770]  notifier_call_chain+0x6d/0x100
[   93.210794]  netdev_update_features+0x56/0x60
[   93.210822]  __tun_chr_ioctl+0xbf1/0x16c0
[   93.210843]  ? file_init_path+0x62/0x120
[   93.210868]  __x64_sys_ioctl+0xa1/0xe0
[   93.210890]  do_syscall_64+0x104/0xfc0
[   93.210917]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[   93.210946] RIP: 0033:0x47cc8d
[   93.210967] 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
[   93.211068] RSP: 002b:00007fff8728c090 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   93.211109] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[   93.211156] RDX: 000000000000000f RSI: 00000000400454d0 RDI: 0000000000000005
[   93.211197] RBP: 00007fff8728c0e0 R08: 0000000000000005 R09: 0000000000001ff0
[   93.211246] R10: 0000000000000003 R11: 0000000000000246 R12: 00007fff8728c5a8
[   93.211288] R13: 00007fff8728c628 R14: 0000000000000002 R15: 0000000000543540
[   93.211332]  </TASK>
[   93.211348] ---[ end trace 0000000000000000 ]---
[   93.211403] ------------[ cut here ]------------
[   93.211432] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/250
[   93.211482] Modules linked in:
[   93.211504] CPU: 3 UID: 0 PID: 250 Comm: packetdrill Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[   93.211560] Tainted: [W]=WARN
[   93.211581] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   93.211616] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[   93.211648] 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
[   93.211759] RSP: 0018:ff6c7b1cc04dfc10 EFLAGS: 00010286
[   93.211791] RAX: 00000000ffffffa6 RBX: 0000000000000001 RCX: 0000000000000000
[   93.211825] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff2e1d1dc3132300
[   93.211858] RBP: 0000000000000000 R08: ff2e1d1dc3224850 R09: ff2e1d1dc6476030
[   93.211899] R10: ff2e1d1dc4944118 R11: fefefefefefefeff R12: 0000000000000000
[   93.211957] R13: 0000000000000010 R14: ff2e1d1dc4944000 R15: ff2e1d1dc3132300
[   93.212027] FS:  000000003beb0400(0000) GS:ff2e1d1e70c16000(0000) knlGS:0000000000000000
[   93.212091] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   93.212133] CR2: 00007f56240c3000 CR3: 00000000032b0001 CR4: 0000000000771ef0
[   93.212188] PKRU: 55555554
[   93.212202] Call Trace:
[   93.212218]  <TASK>
[   93.212235]  rtmsg_ifinfo+0x3c/0xa0
[   93.212265]  __dev_notify_flags+0xb1/0xf0
[   93.212288]  netif_change_flags+0x54/0x70
[   93.212326]  dev_change_flags+0x45/0x80
[   93.212349]  devinet_ioctl+0x607/0x7f0
[   93.212403]  inet_ioctl+0x229/0x240
[   93.212431]  ? __rtnl_unlock+0x35/0x60
[   93.212454]  sock_do_ioctl+0x75/0x140
[   93.212498]  __x64_sys_ioctl+0xa1/0xe0
[   93.212518]  do_syscall_64+0x104/0xfc0
[   93.212537]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[   93.212568] RIP: 0033:0x47cc8d
[   93.212598] 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
[   93.212733] RSP: 002b:00007fff8728c070 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   93.212787] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[   93.212842] RDX: 00007fff8728c0e0 RSI: 0000000000008914 RDI: 0000000000000006
[   93.212892] RBP: 00007fff8728c0c0 R08: 0000000000000005 R09: 0000000000001ff0
[   93.212933] R10: 0000000000000003 R11: 0000000000000246 R12: 00007fff8728c5a8
[   93.212988] R13: 00007fff8728c628 R14: 0000000000000002 R15: 0000000000543540
[   93.213039]  </TASK>
[   93.213053] ---[ end trace 0000000000000000 ]---
[  138.195844] ------------[ cut here ]------------
[  138.195908] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/250
[  138.195981] Modules linked in:
[  138.196007] CPU: 3 UID: 0 PID: 250 Comm: packetdrill Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[  138.196068] Tainted: [W]=WARN
[  138.196087] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  138.196124] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[  138.196159] 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
[  138.196258] RSP: 0018:ff6c7b1cc04dfb58 EFLAGS: 00010286
[  138.196288] RAX: 00000000ffffffa6 RBX: 0000000000000041 RCX: 0000000000000000
[  138.196327] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff2e1d1dc3132700
[  138.196369] RBP: 0000000000000000 R08: ff2e1d1dc3224850 R09: ff2e1d1dc6476030
[  138.196410] R10: ff2e1d1dc4944118 R11: fefefefefefefeff R12: 0000000000000000
[  138.196453] R13: 0000000000000010 R14: ff2e1d1dc4944000 R15: ff2e1d1dc3132700
[  138.196497] FS:  0000000000000000(0000) GS:ff2e1d1e70c16000(0000) knlGS:0000000000000000
[  138.196545] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  138.196577] CR2: 00007f56240c3000 CR3: 000000002e442004 CR4: 0000000000771ef0
[  138.196624] PKRU: 55555554
[  138.196842] Call Trace:
[  138.196860]  <TASK>
[  138.196878]  rtmsg_ifinfo+0x3c/0xa0
[  138.196899]  netif_close_many+0xed/0x190
[  138.196926]  unregister_netdevice_many_notify+0x267/0x9d0
[  138.196955]  ? __queue_work+0x141/0x550
[  138.196979]  unregister_netdevice_queue+0x9e/0xd0
[  138.197008]  __tun_detach+0x591/0x5b0
[  138.197035]  tun_chr_close+0x3f/0xc0
[  138.197055]  __fput+0xe8/0x2c0
[  138.197083]  task_work_run+0x63/0xa0
[  138.197107]  do_exit+0x2c1/0xba0
[  138.197131]  ? netlink_dump+0x336/0x450
[  138.197157]  do_group_exit+0x2d/0xc0
[  138.197179]  get_signal+0x82e/0x900
[  138.197207]  arch_do_signal_or_restart+0x77/0x2b0
[  138.197241]  exit_to_user_mode_loop+0x75/0x4a0
[  138.197274]  do_syscall_64+0x439/0xfc0
[  138.197298]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[  138.197333] RIP: 0033:0x4c2d9e
[  138.197353] Code: Unable to access opcode bytes at 0x4c2d74.
[  138.197389] RSP: 002b:00007fff8728ba00 EFLAGS: 00000202 ORIG_RAX: 000000000000002f
[  138.197433] RAX: 0000000000000050 RBX: 00007fff8728ba90 RCX: 00000000004c2d9e
[  138.197483] RDX: 0000000000000000 RSI: 00007fff8728baa0 RDI: 0000000000000007
[  138.197525] RBP: 00007fff8728ba10 R08: 0000000000000000 R09: 0000000000000000
[  138.197572] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fff8728ba84
[  138.197612] R13: 00007fff8728c628 R14: 00007fff8728bbd0 R15: 0000000000543540
[  138.197659]  </TASK>
[  138.197674] ---[ end trace 0000000000000000 ]---
[  138.197913] ------------[ cut here ]------------
[  138.197941] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/250
[  138.197996] Modules linked in:
[  138.198020] CPU: 3 UID: 0 PID: 250 Comm: packetdrill Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[  138.198080] Tainted: [W]=WARN
[  138.198104] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  138.198142] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[  138.198169] 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
[  138.198270] RSP: 0018:ff6c7b1cc04dfbc8 EFLAGS: 00010286
[  138.198300] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[  138.198342] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff2e1d1dc3132700
[  138.198384] RBP: 0000000000000000 R08: ff2e1d1dc3224850 R09: ff2e1d1dc6b02830
[  138.198427] R10: ff2e1d1dc4944118 R11: fefefefefefefeff R12: 0000000000000000
[  138.198471] R13: 0000000000000011 R14: ff2e1d1dc4944000 R15: ff2e1d1dc3132700
[  138.198520] FS:  0000000000000000(0000) GS:ff2e1d1e70c16000(0000) knlGS:0000000000000000
[  138.198555] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  138.198592] CR2: 00007f56240c3000 CR3: 000000002e442004 CR4: 0000000000771ef0
[  138.198639] PKRU: 55555554
[  138.198655] Call Trace:
[  138.198670]  <TASK>
[  138.198685]  unregister_netdevice_many_notify+0x877/0x9d0
[  138.198720]  unregister_netdevice_queue+0x9e/0xd0
[  138.198751]  __tun_detach+0x591/0x5b0
[  138.198780]  tun_chr_close+0x3f/0xc0
[  138.198802]  __fput+0xe8/0x2c0
[  138.198828]  task_work_run+0x63/0xa0
[  138.198851]  do_exit+0x2c1/0xba0
[  138.198876]  ? netlink_dump+0x336/0x450
[  138.198902]  do_group_exit+0x2d/0xc0
[  138.198924]  get_signal+0x82e/0x900
[  138.198946]  arch_do_signal_or_restart+0x77/0x2b0
[  138.198976]  exit_to_user_mode_loop+0x75/0x4a0
[  138.199009]  do_syscall_64+0x439/0xfc0
[  138.199030]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[  138.199060] RIP: 0033:0x4c2d9e
[  138.199081] Code: Unable to access opcode bytes at 0x4c2d74.
[  138.199116] RSP: 002b:00007fff8728ba00 EFLAGS: 00000202 ORIG_RAX: 000000000000002f
[  138.199157] RAX: 0000000000000050 RBX: 00007fff8728ba90 RCX: 00000000004c2d9e
[  138.199199] RDX: 0000000000000000 RSI: 00007fff8728baa0 RDI: 0000000000000007
[  138.199241] RBP: 00007fff8728ba10 R08: 0000000000000000 R09: 0000000000000000
[  138.199285] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fff8728ba84
[  138.199325] R13: 00007fff8728c628 R14: 00007fff8728bbd0 R15: 0000000000543540
[  138.199369]  </TASK>
[  138.199383] ---[ end trace 0000000000000000 ]---
[  138.207775] ------------[ cut here ]------------
[  138.207815] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#1: kworker/u16:1/65
[  138.207883] Modules linked in:
[  138.207908] CPU: 1 UID: 0 PID: 65 Comm: kworker/u16:1 Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[  138.207973] Tainted: [W]=WARN
[  138.207996] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  138.208030] Workqueue: netns cleanup_net
[  138.208056] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[  138.208081] 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
[  138.208181] RSP: 0018:ff6c7b1cc023fc78 EFLAGS: 00010286
[  138.208216] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[  138.208263] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff2e1d1dc3132800
[  138.208304] RBP: 0000000000000000 R08: ff2e1d1dc3275d50 R09: ff2e1d1dc193282c
[  138.208348] R10: ff2e1d1dc2955118 R11: fefefefefefefeff R12: 0000000000000000
[  138.208393] R13: 0000000000000011 R14: ff2e1d1dc2955000 R15: ff2e1d1dc3132800
[  138.208441] FS:  0000000000000000(0000) GS:ff2e1d1e70b16000(0000) knlGS:0000000000000000
[  138.208486] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  138.208522] CR2: 00007f402d59c680 CR3: 000000002e442003 CR4: 0000000000771ef0
[  138.208574] PKRU: 55555554
[  138.208589] Call Trace:
[  138.208605]  <TASK>
[  138.208624]  unregister_netdevice_many_notify+0x877/0x9d0
[  138.208659]  default_device_exit_batch+0x318/0x390
[  138.208687]  ops_undo_list+0x10b/0x240
[  138.208712]  cleanup_net+0x1d7/0x2e0
[  138.208736]  process_one_work+0x162/0x360
[  138.208765]  worker_thread+0x16e/0x2d0
[  138.208789]  ? rescuer_thread+0x510/0x510
[  138.208813]  kthread+0xe1/0x120
[  138.208838]  ? kthread_park+0xa0/0xa0
[  138.208861]  ret_from_fork+0x16d/0x250
[  138.208886]  ? kthread_park+0xa0/0xa0
[  138.208908]  ret_from_fork_asm+0x11/0x20
[  138.208929]  </TASK>
[  138.208945] ---[ end trace 0000000000000000 ]---