[    2.298523] ------------[ cut here ]------------
[    2.298595] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: unshare/160
[    2.298688] Modules linked in:
[    2.298717] CPU: 3 UID: 0 PID: 160 Comm: unshare Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[    2.298784] Tainted: [W]=WARN
[    2.298808] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.298845] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[    2.298875] 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
[    2.298976] RSP: 0018:ff71f0c38035fcc8 EFLAGS: 00010286
[    2.299016] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[    2.299062] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff2323108314c400
[    2.299107] RBP: 0000000000000000 R08: ff2323108121eed0 R09: ff2323108448a02c
[    2.299149] R10: ff232310819bd118 R11: fefefefefefefeff R12: 0000000000000000
[    2.299191] R13: 0000000000000010 R14: ff232310819bd000 R15: ff2323108314c400
[    2.299241] FS:  00007fa68d001740(0000) GS:ff23231129816000(0000) knlGS:0000000000000000
[    2.299286] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.299325] CR2: 000055ed28e6d310 CR3: 00000000044f1006 CR4: 0000000000771ef0
[    2.299369] PKRU: 55555554
[    2.299384] Call Trace:
[    2.299400]  <TASK>
[    2.299414]  rtmsg_ifinfo+0x3c/0xa0
[    2.299436]  register_netdevice+0x889/0x9f0
[    2.299459]  register_netdev+0x1e/0x30
[    2.299481]  loopback_net_init+0x57/0xb0
[    2.299505]  ? vsock_sysctl_init_net+0xb6/0x140
[    2.299537]  ops_init+0x68/0x140
[    2.299561]  setup_net+0x85/0x150
[    2.299584]  copy_net_ns+0xf5/0x200
[    2.299607]  create_new_namespaces+0x117/0x2f0
[    2.299638]  unshare_nsproxy_namespaces+0x85/0xb0
[    2.299667]  ksys_unshare+0x346/0x5e0
[    2.299691]  __x64_sys_unshare+0x12/0x20
[    2.299713]  do_syscall_64+0x104/0xfc0
[    2.299737]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[    2.299766] RIP: 0033:0x7fa68d0fcbcb
[    2.299789] 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
[    2.299885] RSP: 002b:00007ffd3b503358 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
[    2.299933] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fa68d0fcbcb
[    2.299978] RDX: 0000000000000000 RSI: 00007ffd3b5030c0 RDI: 0000000040000000
[    2.300033] RBP: 00007ffd3b5036e0 R08: 00007ffd3b5032b0 R09: 0000000000000000
[    2.300081] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000040000000
[    2.300124] R13: 0000000000000000 R14: 00000000ffffffff R15: 000055ed28e70b68
[    2.300167]  </TASK>
[    2.300182] ---[ end trace 0000000000000000 ]---
[    2.303717] ------------[ cut here ]------------
[    2.303757] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/160
[    2.303812] Modules linked in:
[    2.303836] CPU: 3 UID: 0 PID: 160 Comm: packetdrill Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[    2.303896] Tainted: [W]=WARN
[    2.303918] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.303958] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[    2.303988] 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
[    2.304112] RSP: 0018:ff71f0c38035fd68 EFLAGS: 00010286
[    2.304140] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[    2.304183] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff2323108314c400
[    2.304229] RBP: 0000000000000000 R08: ff23231082ffd010 R09: ff2323108448f030
[    2.304275] R10: ff2323108453c118 R11: fefefefefefefeff R12: 0000000000000000
[    2.304317] R13: 0000000000000010 R14: ff2323108453c000 R15: ff2323108314c400
[    2.304368] FS:  0000000009ed0400(0000) GS:ff23231129816000(0000) knlGS:0000000000000000
[    2.304413] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.304452] CR2: 00007fa587a9e000 CR3: 000000000474f001 CR4: 0000000000771ef0
[    2.304496] PKRU: 55555554
[    2.304511] Call Trace:
[    2.304524]  <TASK>
[    2.304539]  rtmsg_ifinfo+0x3c/0xa0
[    2.304564]  register_netdevice+0x889/0x9f0
[    2.304586]  __tun_chr_ioctl+0x83c/0x16c0
[    2.304610]  ? do_sys_openat2+0x9a/0xe0
[    2.304634]  __x64_sys_ioctl+0xa1/0xe0
[    2.304662]  do_syscall_64+0x104/0xfc0
[    2.304686]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[    2.304715] RIP: 0033:0x47cc8d
[    2.304736] 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
[    2.304834] RSP: 002b:00007ffffb3fdc70 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[    2.304880] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[    2.304926] RDX: 00007ffffb3fdcf0 RSI: 00000000400454ca RDI: 0000000000000005
[    2.304974] RBP: 00007ffffb3fdcc0 R08: 0000000000000000 R09: 0000000000000000
[    2.305025] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffffb3fe1c8
[    2.305069] R13: 00007ffffb3fe248 R14: 0000000000000002 R15: 0000000000543540
[    2.305112]  </TASK>
[    2.305126] ---[ end trace 0000000000000000 ]---
[    2.305173] ------------[ cut here ]------------
[    2.305203] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/160
[    2.305257] Modules linked in:
[    2.305280] CPU: 3 UID: 0 PID: 160 Comm: packetdrill Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[    2.305340] Tainted: [W]=WARN
[    2.305362] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.305402] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[    2.305432] 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
[    2.305540] RSP: 0018:ff71f0c38035fd60 EFLAGS: 00010286
[    2.305567] RAX: 00000000ffffffa6 RBX: 0000000000000000 RCX: 0000000000000000
[    2.305610] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff2323108314c400
[    2.305653] RBP: 0000000000000002 R08: ff23231082ffd010 R09: ff2323108448f030
[    2.305695] R10: ff2323108453c118 R11: fefefefefefefeff R12: 0000000000000000
[    2.305739] R13: 0000000000000010 R14: ff2323108453c000 R15: ff2323108314c400
[    2.305788] FS:  0000000009ed0400(0000) GS:ff23231129816000(0000) knlGS:0000000000000000
[    2.305834] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.305870] CR2: 00007fa587a9e000 CR3: 000000000474f001 CR4: 0000000000771ef0
[    2.305914] PKRU: 55555554
[    2.305929] Call Trace:
[    2.305944]  <TASK>
[    2.305959]  rtnetlink_event+0x6e/0xb0
[    2.305981]  notifier_call_chain+0x6d/0x100
[    2.306011]  netdev_update_features+0x56/0x60
[    2.306040]  __tun_chr_ioctl+0xbf1/0x16c0
[    2.306065]  ? file_init_path+0x62/0x120
[    2.306089]  __x64_sys_ioctl+0xa1/0xe0
[    2.306112]  do_syscall_64+0x104/0xfc0
[    2.306133]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[    2.306162] RIP: 0033:0x47cc8d
[    2.306184] 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
[    2.306297] RSP: 002b:00007ffffb3fdcb0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[    2.306343] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[    2.306394] RDX: 000000000000000f RSI: 00000000400454d0 RDI: 0000000000000005
[    2.306436] RBP: 00007ffffb3fdd00 R08: 0000000000000000 R09: 0000000000000000
[    2.306478] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffffb3fe1c8
[    2.306527] R13: 00007ffffb3fe248 R14: 0000000000000002 R15: 0000000000543540
[    2.306572]  </TASK>
[    2.306589] ---[ end trace 0000000000000000 ]---
[    2.306629] ------------[ cut here ]------------
[    2.306656] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/160
[    2.306705] Modules linked in:
[    2.306728] CPU: 3 UID: 0 PID: 160 Comm: packetdrill Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[    2.306786] Tainted: [W]=WARN
[    2.306811] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.306847] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[    2.306872] 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
[    2.306974] RSP: 0018:ff71f0c38035fc10 EFLAGS: 00010286
[    2.307018] RAX: 00000000ffffffa6 RBX: 0000000000000001 RCX: 0000000000000000
[    2.307062] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff2323108314c400
[    2.307105] RBP: 0000000000000000 R08: ff23231082ffd010 R09: ff2323108448c030
[    2.307149] R10: ff2323108453c118 R11: fefefefefefefeff R12: 0000000000000000
[    2.307194] R13: 0000000000000010 R14: ff2323108453c000 R15: ff2323108314c400
[    2.307237] FS:  0000000009ed0400(0000) GS:ff23231129816000(0000) knlGS:0000000000000000
[    2.307285] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.307320] CR2: 00007fa587a9e000 CR3: 000000000474f001 CR4: 0000000000771ef0
[    2.307365] PKRU: 55555554
[    2.307380] Call Trace:
[    2.307394]  <TASK>
[    2.307408]  rtmsg_ifinfo+0x3c/0xa0
[    2.307429]  __dev_notify_flags+0xb1/0xf0
[    2.307452]  netif_change_flags+0x54/0x70
[    2.307475]  dev_change_flags+0x45/0x80
[    2.307498]  devinet_ioctl+0x607/0x7f0
[    2.307526]  inet_ioctl+0x229/0x240
[    2.307551]  ? __rtnl_unlock+0x35/0x60
[    2.307574]  sock_do_ioctl+0x75/0x140
[    2.307602]  __x64_sys_ioctl+0xa1/0xe0
[    2.307622]  do_syscall_64+0x104/0xfc0
[    2.307644]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[    2.307672] RIP: 0033:0x47cc8d
[    2.307695] 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
[    2.307793] RSP: 002b:00007ffffb3fdc90 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[    2.307838] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[    2.307880] RDX: 00007ffffb3fdd00 RSI: 0000000000008914 RDI: 0000000000000006
[    2.307925] RBP: 00007ffffb3fdce0 R08: 0000000000000000 R09: 0000000000000000
[    2.307972] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffffb3fe1c8
[    2.308019] R13: 00007ffffb3fe248 R14: 0000000000000002 R15: 0000000000543540
[    2.308064]  </TASK>
[    2.308079] ---[ end trace 0000000000000000 ]---
[   47.278182] ------------[ cut here ]------------
[   47.278250] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/160
[   47.278319] Modules linked in:
[   47.278345] CPU: 3 UID: 0 PID: 160 Comm: packetdrill Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[   47.278406] Tainted: [W]=WARN
[   47.278431] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   47.278468] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[   47.278499] 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
[   47.278602] RSP: 0018:ff71f0c38035fb58 EFLAGS: 00010286
[   47.278633] RAX: 00000000ffffffa6 RBX: 0000000000000041 RCX: 0000000000000000
[   47.278676] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff2323108314c800
[   47.278724] RBP: 0000000000000000 R08: ff23231082ffd010 R09: ff2323108448c030
[   47.278763] R10: ff2323108453c118 R11: fefefefefefefeff R12: 0000000000000000
[   47.278802] R13: 0000000000000010 R14: ff2323108453c000 R15: ff2323108314c800
[   47.278851] FS:  0000000000000000(0000) GS:ff23231129816000(0000) knlGS:0000000000000000
[   47.278897] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   47.278932] CR2: 00007fa587a9e000 CR3: 0000000020c42004 CR4: 0000000000771ef0
[   47.278975] PKRU: 55555554
[   47.278991] Call Trace:
[   47.279175]  <TASK>
[   47.279193]  rtmsg_ifinfo+0x3c/0xa0
[   47.279225]  netif_close_many+0xed/0x190
[   47.279252]  unregister_netdevice_many_notify+0x267/0x9d0
[   47.279283]  ? __queue_work+0x141/0x550
[   47.279311]  unregister_netdevice_queue+0x9e/0xd0
[   47.279343]  __tun_detach+0x591/0x5b0
[   47.279371]  tun_chr_close+0x3f/0xc0
[   47.279392]  __fput+0xe8/0x2c0
[   47.279419]  task_work_run+0x63/0xa0
[   47.279439]  do_exit+0x2c1/0xba0
[   47.279465]  ? __x64_sys_close+0x47/0xa0
[   47.279487]  do_group_exit+0x2d/0xc0
[   47.279510]  get_signal+0x82e/0x900
[   47.279535]  ? fsnotify_grab_connector+0x4a/0x90
[   47.279564]  arch_do_signal_or_restart+0x77/0x2b0
[   47.279594]  ? __call_rcu_common.constprop.0+0x9a/0x340
[   47.279626]  ? __fput+0x17f/0x2c0
[   47.279648]  exit_to_user_mode_loop+0x75/0x4a0
[   47.279682]  do_syscall_64+0x439/0xfc0
[   47.279703]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[   47.279734] RIP: 0033:0x47fb83
[   47.279758] Code: Unable to access opcode bytes at 0x47fb59.
[   47.279791] RSP: 002b:00007ffffb3fd760 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
[   47.279835] RAX: 0000000000000000 RBX: 00000000fffffff5 RCX: 000000000047fb83
[   47.279878] RDX: 000000000000000e RSI: 7896e99f04bd44d1 RDI: 0000000000000007
[   47.279921] RBP: 00007ffffb3fdc60 R08: 0000000000000041 R09: 0000000009ed13e0
[   47.279963] R10: 0000000000000040 R11: 0000000000000246 R12: 0000000000000000
[   47.280010] R13: fffffffffffffff0 R14: 0000000000000000 R15: 0000000000543540
[   47.280057]  </TASK>
[   47.280073] ---[ end trace 0000000000000000 ]---
[   47.280344] ------------[ cut here ]------------
[   47.280373] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/160
[   47.280417] Modules linked in:
[   47.280440] CPU: 3 UID: 0 PID: 160 Comm: packetdrill Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[   47.280506] Tainted: [W]=WARN
[   47.280528] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   47.280566] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[   47.280596] 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
[   47.280698] RSP: 0018:ff71f0c38035fbc8 EFLAGS: 00010286
[   47.280728] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   47.280775] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff2323108314c800
[   47.280822] RBP: 0000000000000000 R08: ff23231082ffd010 R09: ff23231084782030
[   47.280866] R10: ff2323108453c118 R11: fefefefefefefeff R12: 0000000000000000
[   47.280908] R13: 0000000000000011 R14: ff2323108453c000 R15: ff2323108314c800
[   47.280951] FS:  0000000000000000(0000) GS:ff23231129816000(0000) knlGS:0000000000000000
[   47.280996] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   47.281037] CR2: 00007fa587a9e000 CR3: 0000000020c42004 CR4: 0000000000771ef0
[   47.281078] PKRU: 55555554
[   47.281094] Call Trace:
[   47.281109]  <TASK>
[   47.281125]  unregister_netdevice_many_notify+0x877/0x9d0
[   47.281157]  unregister_netdevice_queue+0x9e/0xd0
[   47.281186]  __tun_detach+0x591/0x5b0
[   47.281211]  tun_chr_close+0x3f/0xc0
[   47.281232]  __fput+0xe8/0x2c0
[   47.281252]  task_work_run+0x63/0xa0
[   47.281274]  do_exit+0x2c1/0xba0
[   47.281295]  ? __x64_sys_close+0x47/0xa0
[   47.281323]  do_group_exit+0x2d/0xc0
[   47.281345]  get_signal+0x82e/0x900
[   47.281368]  ? fsnotify_grab_connector+0x4a/0x90
[   47.281396]  arch_do_signal_or_restart+0x77/0x2b0
[   47.281426]  ? __call_rcu_common.constprop.0+0x9a/0x340
[   47.281455]  ? __fput+0x17f/0x2c0
[   47.281478]  exit_to_user_mode_loop+0x75/0x4a0
[   47.281507]  do_syscall_64+0x439/0xfc0
[   47.281527]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[   47.281556] RIP: 0033:0x47fb83
[   47.281576] Code: Unable to access opcode bytes at 0x47fb59.
[   47.281612] RSP: 002b:00007ffffb3fd760 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
[   47.281655] RAX: 0000000000000000 RBX: 00000000fffffff5 RCX: 000000000047fb83
[   47.281695] RDX: 000000000000000e RSI: 7896e99f04bd44d1 RDI: 0000000000000007
[   47.281739] RBP: 00007ffffb3fdc60 R08: 0000000000000041 R09: 0000000009ed13e0
[   47.281783] R10: 0000000000000040 R11: 0000000000000246 R12: 0000000000000000
[   47.281827] R13: fffffffffffffff0 R14: 0000000000000000 R15: 0000000000543540
[   47.281871]  </TASK>
[   47.281890] ---[ end trace 0000000000000000 ]---
[   47.291120] ------------[ cut here ]------------
[   47.291167] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: kworker/u16:0/12
[   47.291232] Modules linked in:
[   47.291254] CPU: 0 UID: 0 PID: 12 Comm: kworker/u16:0 Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[   47.291319] Tainted: [W]=WARN
[   47.291342] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   47.291380] Workqueue: netns cleanup_net
[   47.291408] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[   47.291440] 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
[   47.291539] RSP: 0018:ff71f0c380067c78 EFLAGS: 00010286
[   47.291566] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   47.291607] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff2323108314c500
[   47.291652] RBP: 0000000000000000 R08: ff2323108121eed0 R09: ff2323108305d02c
[   47.291691] R10: ff232310819bd118 R11: fefefefefefefeff R12: 0000000000000000
[   47.291733] R13: 0000000000000011 R14: ff232310819bd000 R15: ff2323108314c500
[   47.291776] FS:  0000000000000000(0000) GS:ff23231129696000(0000) knlGS:0000000000000000
[   47.291822] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   47.291860] CR2: 000055c6c98442b8 CR3: 0000000002f36003 CR4: 0000000000771ef0
[   47.291906] PKRU: 55555554
[   47.291921] Call Trace:
[   47.291934]  <TASK>
[   47.291950]  unregister_netdevice_many_notify+0x877/0x9d0
[   47.291974]  default_device_exit_batch+0x318/0x390
[   47.292011]  ops_undo_list+0x10b/0x240
[   47.292032]  cleanup_net+0x1d7/0x2e0
[   47.292060]  process_one_work+0x162/0x360
[   47.292086]  worker_thread+0x16e/0x2d0
[   47.292107]  ? rescuer_thread+0x510/0x510
[   47.292130]  kthread+0xe1/0x120
[   47.292158]  ? kthread_park+0xa0/0xa0
[   47.292183]  ret_from_fork+0x16d/0x250
[   47.292209]  ? kthread_park+0xa0/0xa0
[   47.292230]  ret_from_fork_asm+0x11/0x20
[   47.292252]  </TASK>
[   47.292267] ---[ end trace 0000000000000000 ]---