[  138.644172] ------------[ cut here ]------------
[  138.644222] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: unshare/292
[  138.644276] Modules linked in:
[  138.644296] CPU: 3 UID: 0 PID: 292 Comm: unshare Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[  138.644353] Tainted: [W]=WARN
[  138.644374] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  138.644410] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[  138.644437] 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
[  138.644533] RSP: 0018:ff8736c28058fcc8 EFLAGS: 00010286
[  138.644562] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[  138.644601] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff4417630303c300
[  138.644647] RBP: 0000000000000000 R08: ff44176301909110 R09: ff441763019bf02c
[  138.644690] R10: ff44176304784118 R11: fefefefefefefeff R12: 0000000000000000
[  138.644744] R13: 0000000000000010 R14: ff44176304784000 R15: ff4417630303c300
[  138.644787] FS:  00007fe35444b740(0000) GS:ff441763a8016000(0000) knlGS:0000000000000000
[  138.644833] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  138.644868] CR2: 0000557cd033d008 CR3: 0000000004663003 CR4: 0000000000771ef0
[  138.644910] PKRU: 55555554
[  138.644924] Call Trace:
[  138.644938]  <TASK>
[  138.644953]  rtmsg_ifinfo+0x3c/0xa0
[  138.644975]  register_netdevice+0x889/0x9f0
[  138.644997]  register_netdev+0x1e/0x30
[  138.645017]  loopback_net_init+0x57/0xb0
[  138.645041]  ? vsock_sysctl_init_net+0xb6/0x140
[  138.645072]  ops_init+0x68/0x140
[  138.645092]  setup_net+0x85/0x150
[  138.645111]  copy_net_ns+0xf5/0x200
[  138.645134]  create_new_namespaces+0x117/0x2f0
[  138.645165]  unshare_nsproxy_namespaces+0x85/0xb0
[  138.645194]  ksys_unshare+0x346/0x5e0
[  138.645218]  __x64_sys_unshare+0x12/0x20
[  138.645238]  do_syscall_64+0x104/0xfc0
[  138.645259]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[  138.645285] RIP: 0033:0x7fe354546bcb
[  138.645307] 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
[  138.645399] RSP: 002b:00007ffd8c177a08 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
[  138.645440] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fe354546bcb
[  138.645480] RDX: 0000000000000000 RSI: 00007ffd8c177770 RDI: 0000000040000000
[  138.645520] RBP: 00007ffd8c177d90 R08: 00007ffd8c177960 R09: 0000000000000000
[  138.645564] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000040000000
[  138.645607] R13: 0000000000000000 R14: 00000000ffffffff R15: 0000557ccf0dcb68
[  138.645655]  </TASK>
[  138.645667] ---[ end trace 0000000000000000 ]---
[  138.646239] ------------[ cut here ]------------
[  138.646270] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/292
[  138.646324] Modules linked in:
[  138.646345] CPU: 3 UID: 0 PID: 292 Comm: packetdrill Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[  138.646401] Tainted: [W]=WARN
[  138.646422] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  138.646457] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[  138.646484] 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
[  138.646582] RSP: 0018:ff8736c28058fd68 EFLAGS: 00010286
[  138.646608] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[  138.646650] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff4417630303c300
[  138.646689] RBP: 0000000000000000 R08: ff4417630198c510 R09: ff441763019bc030
[  138.646735] R10: ff441763063fc118 R11: fefefefefefefeff R12: 0000000000000000
[  138.646778] R13: 0000000000000010 R14: ff441763063fc000 R15: ff4417630303c300
[  138.646823] FS:  00000000337fe400(0000) GS:ff441763a8016000(0000) knlGS:0000000000000000
[  138.646866] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  138.646893] CR2: 00007fa22b187000 CR3: 0000000004503004 CR4: 0000000000771ef0
[  138.646937] PKRU: 55555554
[  138.646949] Call Trace:
[  138.646960]  <TASK>
[  138.646974]  rtmsg_ifinfo+0x3c/0xa0
[  138.646996]  register_netdevice+0x889/0x9f0
[  138.647018]  __tun_chr_ioctl+0x83c/0x16c0
[  138.647043]  ? do_sys_openat2+0x9a/0xe0
[  138.647063]  __x64_sys_ioctl+0xa1/0xe0
[  138.647087]  do_syscall_64+0x104/0xfc0
[  138.647108]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[  138.647135] RIP: 0033:0x47cc8d
[  138.647152] 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
[  138.647249] RSP: 002b:00007ffe97333840 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  138.647289] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[  138.647332] RDX: 00007ffe973338c0 RSI: 00000000400454ca RDI: 0000000000000005
[  138.647364] RBP: 00007ffe97333890 R08: 0000000000000000 R09: 0000000000000000
[  138.647403] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe97333d98
[  138.647449] R13: 00007ffe97333e18 R14: 0000000000000002 R15: 0000000000543540
[  138.647491]  </TASK>
[  138.647503] ---[ end trace 0000000000000000 ]---
[  138.647536] ------------[ cut here ]------------
[  138.647562] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/292
[  138.647612] Modules linked in:
[  138.647635] CPU: 3 UID: 0 PID: 292 Comm: packetdrill Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[  138.647689] Tainted: [W]=WARN
[  138.647714] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  138.647745] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[  138.647769] 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
[  138.647863] RSP: 0018:ff8736c28058fd60 EFLAGS: 00010286
[  138.647888] RAX: 00000000ffffffa6 RBX: 0000000000000000 RCX: 0000000000000000
[  138.647921] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff4417630303c300
[  138.647961] RBP: 0000000000000002 R08: ff4417630198c510 R09: ff441763019bc030
[  138.648002] R10: ff441763063fc118 R11: fefefefefefefeff R12: 0000000000000000
[  138.648044] R13: 0000000000000010 R14: ff441763063fc000 R15: ff4417630303c300
[  138.648089] FS:  00000000337fe400(0000) GS:ff441763a8016000(0000) knlGS:0000000000000000
[  138.648135] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  138.648176] CR2: 00007fa22b187000 CR3: 0000000004503004 CR4: 0000000000771ef0
[  138.648224] PKRU: 55555554
[  138.648239] Call Trace:
[  138.648251]  <TASK>
[  138.648264]  rtnetlink_event+0x6e/0xb0
[  138.648287]  notifier_call_chain+0x6d/0x100
[  138.648306]  netdev_update_features+0x56/0x60
[  138.648334]  __tun_chr_ioctl+0xbf1/0x16c0
[  138.648361]  ? file_init_path+0x62/0x120
[  138.648384]  __x64_sys_ioctl+0xa1/0xe0
[  138.648404]  do_syscall_64+0x104/0xfc0
[  138.648422]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[  138.648449] RIP: 0033:0x47cc8d
[  138.648468] 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
[  138.648558] RSP: 002b:00007ffe97333880 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  138.648604] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[  138.648651] RDX: 000000000000000f RSI: 00000000400454d0 RDI: 0000000000000005
[  138.648690] RBP: 00007ffe973338d0 R08: 0000000000000000 R09: 0000000000000000
[  138.648731] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe97333d98
[  138.648769] R13: 00007ffe97333e18 R14: 0000000000000002 R15: 0000000000543540
[  138.648808]  </TASK>
[  138.648822] ---[ end trace 0000000000000000 ]---
[  138.648864] ------------[ cut here ]------------
[  138.648892] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/292
[  138.648943] Modules linked in:
[  138.648964] CPU: 3 UID: 0 PID: 292 Comm: packetdrill Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[  138.649017] Tainted: [W]=WARN
[  138.649037] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  138.649069] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[  138.649097] 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
[  138.649199] RSP: 0018:ff8736c28058fc10 EFLAGS: 00010286
[  138.649226] RAX: 00000000ffffffa6 RBX: 0000000000000001 RCX: 0000000000000000
[  138.649268] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff4417630303c300
[  138.649309] RBP: 0000000000000000 R08: ff4417630198c510 R09: ff44176309c33030
[  138.649348] R10: ff441763063fc118 R11: fefefefefefefeff R12: 0000000000000000
[  138.649390] R13: 0000000000000010 R14: ff441763063fc000 R15: ff4417630303c300
[  138.649434] FS:  00000000337fe400(0000) GS:ff441763a8016000(0000) knlGS:0000000000000000
[  138.649476] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  138.649509] CR2: 00007fa22b187000 CR3: 0000000004503004 CR4: 0000000000771ef0
[  138.649554] PKRU: 55555554
[  138.649568] Call Trace:
[  138.649583]  <TASK>
[  138.649597]  rtmsg_ifinfo+0x3c/0xa0
[  138.649619]  __dev_notify_flags+0xb1/0xf0
[  138.649643]  netif_change_flags+0x54/0x70
[  138.649664]  dev_change_flags+0x45/0x80
[  138.649686]  devinet_ioctl+0x607/0x7f0
[  138.649714]  inet_ioctl+0x229/0x240
[  138.649738]  ? __rtnl_unlock+0x35/0x60
[  138.649760]  sock_do_ioctl+0x75/0x140
[  138.649784]  __x64_sys_ioctl+0xa1/0xe0
[  138.649807]  do_syscall_64+0x104/0xfc0
[  138.649831]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[  138.649860] RIP: 0033:0x47cc8d
[  138.649880] 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
[  138.649973] RSP: 002b:00007ffe97333860 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  138.650009] RAX: ffffffffffffffda RBX: 000000000000000f RCX: 000000000047cc8d
[  138.650049] RDX: 00007ffe973338d0 RSI: 0000000000008914 RDI: 0000000000000006
[  138.650091] RBP: 00007ffe973338b0 R08: 0000000000000000 R09: 0000000000000000
[  138.650131] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe97333d98
[  138.650177] R13: 00007ffe97333e18 R14: 0000000000000002 R15: 0000000000543540
[  138.650216]  </TASK>
[  138.650232] ---[ end trace 0000000000000000 ]---
[  183.630276] ------------[ cut here ]------------
[  183.630371] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: packetdrill/292
[  183.630446] Modules linked in:
[  183.630474] CPU: 3 UID: 0 PID: 292 Comm: packetdrill Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[  183.630532] Tainted: [W]=WARN
[  183.630552] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  183.630587] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[  183.630613] 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
[  183.631124] RSP: 0018:ff8736c28058fb58 EFLAGS: 00010286
[  183.631163] RAX: 00000000ffffffa6 RBX: 0000000000000041 RCX: 0000000000000000
[  183.631214] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff4417630322f400
[  183.631254] RBP: 0000000000000000 R08: ff4417630198c510 R09: ff44176309c33030
[  183.631294] R10: ff441763063fc118 R11: fefefefefefefeff R12: 0000000000000000
[  183.631334] R13: 0000000000000010 R14: ff441763063fc000 R15: ff4417630322f400
[  183.631380] FS:  0000000000000000(0000) GS:ff441763a8016000(0000) knlGS:0000000000000000
[  183.631434] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  183.631472] CR2: 00007fa22b187000 CR3: 0000000008042005 CR4: 0000000000771ef0
[  183.631515] PKRU: 55555554
[  183.631532] Call Trace:
[  183.631547]  <TASK>
[  183.631567]  rtmsg_ifinfo+0x3c/0xa0
[  183.631595]  netif_close_many+0xed/0x190
[  183.631624]  unregister_netdevice_many_notify+0x267/0x9d0
[  183.631654]  ? __queue_work+0x141/0x550
[  183.631680]  unregister_netdevice_queue+0x9e/0xd0
[  183.631712]  __tun_detach+0x591/0x5b0
[  183.631737]  tun_chr_close+0x3f/0xc0
[  183.631763]  __fput+0xe8/0x2c0
[  183.631792]  task_work_run+0x63/0xa0
[  183.631816]  do_exit+0x2c1/0xba0
[  183.631840]  do_group_exit+0x2d/0xc0
[  183.631862]  get_signal+0x82e/0x900
[  183.631887]  ? __d_alloc+0x40/0x200
[  183.631916]  ? alloc_empty_file+0x3f/0xd0
[  183.631938]  arch_do_signal_or_restart+0x77/0x2b0
[  183.631968]  ? alloc_file_pseudo+0xc1/0x110
[  183.631992]  ? __sys_socket+0xda/0x130
[  183.632018]  exit_to_user_mode_loop+0x75/0x4a0
[  183.632052]  do_syscall_64+0x439/0xfc0
[  183.632075]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[  183.632100] RIP: 0033:0x47ea2b
[  183.632129] Code: Unable to access opcode bytes at 0x47ea01.
[  183.632173] RSP: 002b:00007ffe973332e8 EFLAGS: 00000206 ORIG_RAX: 0000000000000029
[  183.632210] RAX: 0000000000000007 RBX: 00007ffe973333c0 RCX: 000000000047ea2b
[  183.632248] RDX: 0000000000000000 RSI: 0000000000080003 RDI: 0000000000000010
[  183.632290] RBP: 00007ffe97333320 R08: 0000000000000041 R09: 00000000337ff3e0
[  183.632340] R10: 0000000000000040 R11: 0000000000000206 R12: 00007ffe97333d98
[  183.632386] R13: 00007ffe97333e18 R14: 00007ffe97333898 R15: 0000000000543540
[  183.632426]  </TASK>
[  183.632439] ---[ end trace 0000000000000000 ]---
[  183.632550] ------------[ cut here ]------------
[  183.632581] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: packetdrill/292
[  183.632635] Modules linked in:
[  183.632658] CPU: 0 UID: 0 PID: 292 Comm: packetdrill Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[  183.632718] Tainted: [W]=WARN
[  183.632739] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  183.632775] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[  183.632810] 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
[  183.632897] RSP: 0018:ff8736c28058fbc8 EFLAGS: 00010286
[  183.632923] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[  183.632957] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff44176302ff4f00
[  183.633001] RBP: 0000000000000000 R08: ff4417630198c510 R09: ff441763047f0830
[  183.633042] R10: ff441763063fc118 R11: fefefefefefefeff R12: 0000000000000000
[  183.633083] R13: 0000000000000011 R14: ff441763063fc000 R15: ff44176302ff4f00
[  183.633128] FS:  0000000000000000(0000) GS:ff441763a7e96000(0000) knlGS:0000000000000000
[  183.633167] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  183.633204] CR2: 000055773c069d5c CR3: 0000000008042004 CR4: 0000000000771ef0
[  183.633244] PKRU: 55555554
[  183.633258] Call Trace:
[  183.633272]  <TASK>
[  183.633288]  unregister_netdevice_many_notify+0x877/0x9d0
[  183.633318]  unregister_netdevice_queue+0x9e/0xd0
[  183.633348]  __tun_detach+0x591/0x5b0
[  183.633366]  tun_chr_close+0x3f/0xc0
[  183.633389]  __fput+0xe8/0x2c0
[  183.633411]  task_work_run+0x63/0xa0
[  183.633435]  do_exit+0x2c1/0xba0
[  183.633456]  do_group_exit+0x2d/0xc0
[  183.633475]  get_signal+0x82e/0x900
[  183.633496]  ? __d_alloc+0x40/0x200
[  183.633518]  ? alloc_empty_file+0x3f/0xd0
[  183.633540]  arch_do_signal_or_restart+0x77/0x2b0
[  183.633569]  ? alloc_file_pseudo+0xc1/0x110
[  183.633591]  ? __sys_socket+0xda/0x130
[  183.633614]  exit_to_user_mode_loop+0x75/0x4a0
[  183.633641]  do_syscall_64+0x439/0xfc0
[  183.633662]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[  183.633692] RIP: 0033:0x47ea2b
[  183.633715] Code: Unable to access opcode bytes at 0x47ea01.
[  183.633750] RSP: 002b:00007ffe973332e8 EFLAGS: 00000206 ORIG_RAX: 0000000000000029
[  183.633790] RAX: 0000000000000007 RBX: 00007ffe973333c0 RCX: 000000000047ea2b
[  183.633833] RDX: 0000000000000000 RSI: 0000000000080003 RDI: 0000000000000010
[  183.633877] RBP: 00007ffe97333320 R08: 0000000000000041 R09: 00000000337ff3e0
[  183.633915] R10: 0000000000000040 R11: 0000000000000206 R12: 00007ffe97333d98
[  183.633953] R13: 00007ffe97333e18 R14: 00007ffe97333898 R15: 0000000000543540
[  183.633996]  </TASK>
[  183.634009] ---[ end trace 0000000000000000 ]---
[  183.641812] ------------[ cut here ]------------
[  183.641843] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: kworker/u16:0/12
[  183.641900] Modules linked in:
[  183.641922] CPU: 0 UID: 0 PID: 12 Comm: kworker/u16:0 Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[  183.641977] Tainted: [W]=WARN
[  183.641997] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  183.642033] Workqueue: netns cleanup_net
[  183.642063] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[  183.642090] 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
[  183.642182] RSP: 0018:ff8736c280067c78 EFLAGS: 00010286
[  183.642210] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[  183.642251] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff44176302ff4f00
[  183.642291] RBP: 0000000000000000 R08: ff44176301909110 R09: ff441763047e902c
[  183.642338] R10: ff44176304784118 R11: fefefefefefefeff R12: 0000000000000000
[  183.642379] R13: 0000000000000011 R14: ff44176304784000 R15: ff44176302ff4f00
[  183.642421] FS:  0000000000000000(0000) GS:ff441763a7e96000(0000) knlGS:0000000000000000
[  183.642465] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  183.642504] CR2: 00007f03b0f0af98 CR3: 0000000008042005 CR4: 0000000000771ef0
[  183.642545] PKRU: 55555554
[  183.642559] Call Trace:
[  183.642574]  <TASK>
[  183.642589]  unregister_netdevice_many_notify+0x877/0x9d0
[  183.642621]  default_device_exit_batch+0x318/0x390
[  183.642658]  ops_undo_list+0x10b/0x240
[  183.642679]  cleanup_net+0x1d7/0x2e0
[  183.642697]  process_one_work+0x162/0x360
[  183.642720]  worker_thread+0x16e/0x2d0
[  183.642741]  ? rescuer_thread+0x510/0x510
[  183.642764]  kthread+0xe1/0x120
[  183.642782]  ? kthread_park+0xa0/0xa0
[  183.642803]  ret_from_fork+0x16d/0x250
[  183.642827]  ? kthread_park+0xa0/0xa0
[  183.642846]  ret_from_fork_asm+0x11/0x20
[  183.642868]  </TASK>
[  183.642881] ---[ end trace 0000000000000000 ]---