[    2.287506] ------------[ cut here ]------------
[    2.287551] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: unshare/159
[    2.287601] Modules linked in:
[    2.287629] CPU: 3 UID: 0 PID: 159 Comm: unshare Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[    2.287690] Tainted: [W]=WARN
[    2.287717] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.287755] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[    2.287788] 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
[    2.287888] RSP: 0018:ff682d88403e7cc8 EFLAGS: 00010286
[    2.287925] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[    2.287969] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff2df70e01db4f00
[    2.288013] RBP: 0000000000000000 R08: ff2df70e01932950 R09: ff2df70e04eb202c
[    2.288058] R10: ff2df70e019c5118 R11: fefefefefefefeff R12: 0000000000000000
[    2.288104] R13: 0000000000000010 R14: ff2df70e019c5000 R15: ff2df70e01db4f00
[    2.288159] FS:  00007fb0cec58740(0000) GS:ff2df70e8f016000(0000) knlGS:0000000000000000
[    2.288205] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.288239] CR2: 000055f7acf36310 CR3: 0000000004c69004 CR4: 0000000000771ef0
[    2.288296] PKRU: 55555554
[    2.288310] Call Trace:
[    2.288329]  <TASK>
[    2.288346]  rtmsg_ifinfo+0x3c/0xa0
[    2.288367]  register_netdevice+0x889/0x9f0
[    2.288391]  register_netdev+0x1e/0x30
[    2.288414]  loopback_net_init+0x57/0xb0
[    2.288440]  ? vsock_sysctl_init_net+0xb6/0x140
[    2.288468]  ops_init+0x68/0x140
[    2.288490]  setup_net+0x85/0x150
[    2.288511]  copy_net_ns+0xf5/0x200
[    2.288532]  create_new_namespaces+0x117/0x2f0
[    2.288563]  unshare_nsproxy_namespaces+0x85/0xb0
[    2.288592]  ksys_unshare+0x346/0x5e0
[    2.288616]  __x64_sys_unshare+0x12/0x20
[    2.288638]  do_syscall_64+0x104/0xfc0
[    2.288666]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[    2.288695] RIP: 0033:0x7fb0ced53bcb
[    2.288721] 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
[    2.288819] RSP: 002b:00007fff362099a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
[    2.288863] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fb0ced53bcb
[    2.288906] RDX: 0000000000000000 RSI: 00007fff36209710 RDI: 0000000040000000
[    2.288949] RBP: 00007fff36209d30 R08: 00007fff36209900 R09: 0000000000000000
[    2.288991] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000040000000
[    2.289034] R13: 0000000000000000 R14: 00000000ffffffff R15: 000055f7acf39b68
[    2.289080]  </TASK>
[    2.289095] ---[ end trace 0000000000000000 ]---
[    2.292515] ------------[ cut here ]------------
[    2.292553] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/159
[    2.292609] Modules linked in:
[    2.292633] CPU: 3 UID: 0 PID: 159 Comm: packetdrill Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[    2.292697] Tainted: [W]=WARN
[    2.292720] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.292754] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[    2.292782] 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
[    2.292881] RSP: 0018:ff682d88403e7d68 EFLAGS: 00010286
[    2.292910] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[    2.292957] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff2df70e01db4f00
[    2.293001] RBP: 0000000000000000 R08: ff2df70e030e25d0 R09: ff2df70e04eb7030
[    2.293042] R10: ff2df70e03354118 R11: fefefefefefefeff R12: 0000000000000000
[    2.293084] R13: 0000000000000010 R14: ff2df70e03354000 R15: ff2df70e01db4f00
[    2.293127] FS:  000000003faa5400(0000) GS:ff2df70e8f016000(0000) knlGS:0000000000000000
[    2.293180] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.293214] CR2: 00007fd8f07ba000 CR3: 0000000003287005 CR4: 0000000000771ef0
[    2.293265] PKRU: 55555554
[    2.293280] Call Trace:
[    2.293296]  <TASK>
[    2.293313]  rtmsg_ifinfo+0x3c/0xa0
[    2.293337]  register_netdevice+0x889/0x9f0
[    2.293355]  __tun_chr_ioctl+0x83c/0x16c0
[    2.293380]  ? do_sys_openat2+0x9a/0xe0
[    2.293404]  __x64_sys_ioctl+0xa1/0xe0
[    2.293423]  do_syscall_64+0x104/0xfc0
[    2.293444]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[    2.293474] RIP: 0033:0x47cc8d
[    2.293496] 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
[    2.293595] RSP: 002b:00007ffd21ae8e20 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[    2.293637] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[    2.293684] RDX: 00007ffd21ae8ea0 RSI: 00000000400454ca RDI: 0000000000000005
[    2.293727] RBP: 00007ffd21ae8e70 R08: 0000000000000000 R09: 0000000000000000
[    2.293769] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd21ae9378
[    2.293814] R13: 00007ffd21ae93f8 R14: 0000000000000002 R15: 0000000000543540
[    2.293854]  </TASK>
[    2.293870] ---[ end trace 0000000000000000 ]---
[    2.293918] ------------[ cut here ]------------
[    2.293948] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/159
[    2.293999] Modules linked in:
[    2.294023] CPU: 3 UID: 0 PID: 159 Comm: packetdrill Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[    2.294082] Tainted: [W]=WARN
[    2.294104] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.294140] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[    2.294170] 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
[    2.294266] RSP: 0018:ff682d88403e7d60 EFLAGS: 00010286
[    2.294297] RAX: 00000000ffffffa6 RBX: 0000000000000000 RCX: 0000000000000000
[    2.294331] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff2df70e01db4f00
[    2.294371] RBP: 0000000000000002 R08: ff2df70e030e25d0 R09: ff2df70e04eb7030
[    2.294412] R10: ff2df70e03354118 R11: fefefefefefefeff R12: 0000000000000000
[    2.294452] R13: 0000000000000010 R14: ff2df70e03354000 R15: ff2df70e01db4f00
[    2.294496] FS:  000000003faa5400(0000) GS:ff2df70e8f016000(0000) knlGS:0000000000000000
[    2.294542] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.294577] CR2: 00007fd8f07ba000 CR3: 0000000003287005 CR4: 0000000000771ef0
[    2.294618] PKRU: 55555554
[    2.294632] Call Trace:
[    2.294647]  <TASK>
[    2.294661]  rtnetlink_event+0x6e/0xb0
[    2.294683]  notifier_call_chain+0x6d/0x100
[    2.294707]  netdev_update_features+0x56/0x60
[    2.294740]  __tun_chr_ioctl+0xbf1/0x16c0
[    2.294761]  ? file_init_path+0x62/0x120
[    2.294784]  __x64_sys_ioctl+0xa1/0xe0
[    2.294805]  do_syscall_64+0x104/0xfc0
[    2.294827]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[    2.294854] RIP: 0033:0x47cc8d
[    2.294875] 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
[    2.294970] RSP: 002b:00007ffd21ae8e60 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[    2.295013] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[    2.295056] RDX: 000000000000000f RSI: 00000000400454d0 RDI: 0000000000000005
[    2.295099] RBP: 00007ffd21ae8eb0 R08: 0000000000000005 R09: 0000000000000120
[    2.295144] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd21ae9378
[    2.295192] R13: 00007ffd21ae93f8 R14: 0000000000000002 R15: 0000000000543540
[    2.295233]  </TASK>
[    2.295251] ---[ end trace 0000000000000000 ]---
[    2.295294] ------------[ cut here ]------------
[    2.295320] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/159
[    2.295372] Modules linked in:
[    2.295394] CPU: 3 UID: 0 PID: 159 Comm: packetdrill Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[    2.295459] Tainted: [W]=WARN
[    2.295480] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.295516] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[    2.295545] 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
[    2.295642] RSP: 0018:ff682d88403e7c10 EFLAGS: 00010286
[    2.295671] RAX: 00000000ffffffa6 RBX: 0000000000000001 RCX: 0000000000000000
[    2.295714] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff2df70e01db4f00
[    2.295758] RBP: 0000000000000000 R08: ff2df70e030e25d0 R09: ff2df70e04eb4030
[    2.295799] R10: ff2df70e03354118 R11: fefefefefefefeff R12: 0000000000000000
[    2.295840] R13: 0000000000000010 R14: ff2df70e03354000 R15: ff2df70e01db4f00
[    2.295882] FS:  000000003faa5400(0000) GS:ff2df70e8f016000(0000) knlGS:0000000000000000
[    2.295922] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.295958] CR2: 00007fd8f07ba000 CR3: 0000000003287005 CR4: 0000000000771ef0
[    2.296002] PKRU: 55555554
[    2.296016] Call Trace:
[    2.296029]  <TASK>
[    2.296043]  rtmsg_ifinfo+0x3c/0xa0
[    2.296065]  __dev_notify_flags+0xb1/0xf0
[    2.296087]  netif_change_flags+0x54/0x70
[    2.296109]  dev_change_flags+0x45/0x80
[    2.296130]  devinet_ioctl+0x607/0x7f0
[    2.296159]  inet_ioctl+0x229/0x240
[    2.296181]  ? __rtnl_unlock+0x35/0x60
[    2.296203]  sock_do_ioctl+0x75/0x140
[    2.296227]  __x64_sys_ioctl+0xa1/0xe0
[    2.296255]  do_syscall_64+0x104/0xfc0
[    2.296276]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[    2.296302] RIP: 0033:0x47cc8d
[    2.296324] 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
[    2.296421] RSP: 002b:00007ffd21ae8e40 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[    2.296461] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[    2.296506] RDX: 00007ffd21ae8eb0 RSI: 0000000000008914 RDI: 0000000000000006
[    2.296546] RBP: 00007ffd21ae8e90 R08: 0000000000000005 R09: 0000000000000120
[    2.296588] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd21ae9378
[    2.296628] R13: 00007ffd21ae93f8 R14: 0000000000000002 R15: 0000000000543540
[    2.296675]  </TASK>
[    2.296690] ---[ end trace 0000000000000000 ]---
[   47.270391] ------------[ cut here ]------------
[   47.270498] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/159
[   47.270576] Modules linked in:
[   47.270605] CPU: 3 UID: 0 PID: 159 Comm: packetdrill Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[   47.270674] Tainted: [W]=WARN
[   47.270702] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   47.270740] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[   47.270770] 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
[   47.270855] RSP: 0018:ff682d88403e7b58 EFLAGS: 00010286
[   47.270885] RAX: 00000000ffffffa6 RBX: 0000000000000041 RCX: 0000000000000000
[   47.270928] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff2df70e0188f800
[   47.270972] RBP: 0000000000000000 R08: ff2df70e030e25d0 R09: ff2df70e06e03030
[   47.271015] R10: ff2df70e03354118 R11: fefefefefefefeff R12: 0000000000000000
[   47.271063] R13: 0000000000000010 R14: ff2df70e03354000 R15: ff2df70e0188f800
[   47.271109] FS:  0000000000000000(0000) GS:ff2df70e8f016000(0000) knlGS:0000000000000000
[   47.271155] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   47.271192] CR2: 00007fd8f07ba000 CR3: 000000002ea42001 CR4: 0000000000771ef0
[   47.271235] PKRU: 55555554
[   47.271440] Call Trace:
[   47.271458]  <TASK>
[   47.271473]  rtmsg_ifinfo+0x3c/0xa0
[   47.271499]  netif_close_many+0xed/0x190
[   47.271531]  unregister_netdevice_many_notify+0x267/0x9d0
[   47.271563]  ? __queue_work+0x141/0x550
[   47.271590]  unregister_netdevice_queue+0x9e/0xd0
[   47.271619]  __tun_detach+0x591/0x5b0
[   47.271644]  tun_chr_close+0x3f/0xc0
[   47.271664]  __fput+0xe8/0x2c0
[   47.271689]  task_work_run+0x63/0xa0
[   47.271712]  do_exit+0x2c1/0xba0
[   47.271737]  ? sysvec_reschedule_ipi+0x25/0x120
[   47.271769]  do_group_exit+0x2d/0xc0
[   47.271794]  get_signal+0x82e/0x900
[   47.271817]  arch_do_signal_or_restart+0x77/0x2b0
[   47.271848]  exit_to_user_mode_loop+0x75/0x4a0
[   47.271882]  do_syscall_64+0x439/0xfc0
[   47.271907]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[   47.271942] RIP: 0033:0x4c2d9e
[   47.271964] Code: Unable to access opcode bytes at 0x4c2d74.
[   47.272001] RSP: 002b:00007ffd21ae87d0 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[   47.272044] RAX: 0000000000000014 RBX: 0000000000000012 RCX: 00000000004c2d9e
[   47.272088] RDX: 0000000000000014 RSI: 00007ffd21ae88b0 RDI: 0000000000000007
[   47.272131] RBP: 00007ffd21ae87e0 R08: 00007ffd21ae8870 R09: 000000000000000c
[   47.272176] R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffd21ae9378
[   47.272218] R13: 00007ffd21ae93f8 R14: 00007ffd21ae89a0 R15: 0000000000543540
[   47.272266]  </TASK>
[   47.272280] ---[ end trace 0000000000000000 ]---
[   47.272373] ------------[ cut here ]------------
[   47.272403] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/159
[   47.272456] Modules linked in:
[   47.272481] CPU: 3 UID: 0 PID: 159 Comm: packetdrill Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[   47.272543] Tainted: [W]=WARN
[   47.272571] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   47.272613] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[   47.272645] 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
[   47.272747] RSP: 0018:ff682d88403e7bc8 EFLAGS: 00010286
[   47.272781] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   47.272828] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff2df70e0188f800
[   47.272864] RBP: 0000000000000000 R08: ff2df70e030e25d0 R09: ff2df70e0308f830
[   47.272900] R10: ff2df70e03354118 R11: fefefefefefefeff R12: 0000000000000000
[   47.272938] R13: 0000000000000011 R14: ff2df70e03354000 R15: ff2df70e0188f800
[   47.272984] FS:  0000000000000000(0000) GS:ff2df70e8f016000(0000) knlGS:0000000000000000
[   47.273031] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   47.273069] CR2: 00007fd8f07ba000 CR3: 000000002ea42001 CR4: 0000000000771ef0
[   47.273112] PKRU: 55555554
[   47.273130] Call Trace:
[   47.273144]  <TASK>
[   47.273158]  unregister_netdevice_many_notify+0x877/0x9d0
[   47.273186]  unregister_netdevice_queue+0x9e/0xd0
[   47.273210]  __tun_detach+0x591/0x5b0
[   47.273233]  tun_chr_close+0x3f/0xc0
[   47.273260]  __fput+0xe8/0x2c0
[   47.273282]  task_work_run+0x63/0xa0
[   47.273304]  do_exit+0x2c1/0xba0
[   47.273326]  ? sysvec_reschedule_ipi+0x25/0x120
[   47.273357]  do_group_exit+0x2d/0xc0
[   47.273379]  get_signal+0x82e/0x900
[   47.273402]  arch_do_signal_or_restart+0x77/0x2b0
[   47.273433]  exit_to_user_mode_loop+0x75/0x4a0
[   47.273460]  do_syscall_64+0x439/0xfc0
[   47.273484]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[   47.273510] RIP: 0033:0x4c2d9e
[   47.273536] Code: Unable to access opcode bytes at 0x4c2d74.
[   47.273572] RSP: 002b:00007ffd21ae87d0 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[   47.273606] RAX: 0000000000000014 RBX: 0000000000000012 RCX: 00000000004c2d9e
[   47.273653] RDX: 0000000000000014 RSI: 00007ffd21ae88b0 RDI: 0000000000000007
[   47.273697] RBP: 00007ffd21ae87e0 R08: 00007ffd21ae8870 R09: 000000000000000c
[   47.273742] R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffd21ae9378
[   47.273778] R13: 00007ffd21ae93f8 R14: 00007ffd21ae89a0 R15: 0000000000543540
[   47.273824]  </TASK>
[   47.273841] ---[ end trace 0000000000000000 ]---
[   47.280321] ------------[ cut here ]------------
[   47.280363] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: kworker/u16:0/12
[   47.280430] Modules linked in:
[   47.280452] CPU: 0 UID: 0 PID: 12 Comm: kworker/u16:0 Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[   47.280515] Tainted: [W]=WARN
[   47.280539] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   47.280576] Workqueue: netns cleanup_net
[   47.280603] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[   47.280636] 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
[   47.280734] RSP: 0018:ff682d8840067c78 EFLAGS: 00010286
[   47.280766] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   47.280812] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff2df70e030d6500
[   47.280857] RBP: 0000000000000000 R08: ff2df70e01932950 R09: ff2df70e019ce02c
[   47.280899] R10: ff2df70e019c5118 R11: fefefefefefefeff R12: 0000000000000000
[   47.280942] R13: 0000000000000011 R14: ff2df70e019c5000 R15: ff2df70e030d6500
[   47.280990] FS:  0000000000000000(0000) GS:ff2df70e8ee96000(0000) knlGS:0000000000000000
[   47.281041] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   47.281075] CR2: 0000555a849112b8 CR3: 00000000019eb001 CR4: 0000000000771ef0
[   47.281125] PKRU: 55555554
[   47.281139] Call Trace:
[   47.281153]  <TASK>
[   47.281168]  unregister_netdevice_many_notify+0x877/0x9d0
[   47.281202]  default_device_exit_batch+0x318/0x390
[   47.281226]  ops_undo_list+0x10b/0x240
[   47.281256]  cleanup_net+0x1d7/0x2e0
[   47.281281]  process_one_work+0x162/0x360
[   47.281307]  worker_thread+0x16e/0x2d0
[   47.281330]  ? rescuer_thread+0x510/0x510
[   47.281356]  kthread+0xe1/0x120
[   47.281382]  ? kthread_park+0xa0/0xa0
[   47.281404]  ret_from_fork+0x16d/0x250
[   47.281426]  ? kthread_park+0xa0/0xa0
[   47.281449]  ret_from_fork_asm+0x11/0x20
[   47.281473]  </TASK>
[   47.281488] ---[ end trace 0000000000000000 ]---