[    9.508103] ------------[ cut here ]------------
[    9.508157] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: ip/1424
[    9.508216] Modules linked in: tcp_diag mptcp_diag inet_diag
[    9.508252] CPU: 3 UID: 0 PID: 1424 Comm: ip Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[    9.508303] Tainted: [W]=WARN
[    9.508324] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    9.508353] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[    9.508381] 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 ab fb ff b9 a6 ff ff
[    9.508472] RSP: 0018:ff3945f381fdfcc8 EFLAGS: 00010286
[    9.508498] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[    9.508535] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff161794c18f0e00
[    9.508574] RBP: 0000000000000000 R08: ff161794ca0adb90 R09: ff161794c326f02c
[    9.508619] R10: ff161794c3269120 R11: fefefefefefefeff R12: 0000000000000000
[    9.508658] R13: 0000000000000010 R14: ff161794c3269000 R15: ff161794c18f0e00
[    9.508700] FS:  00007f758bbe4840(0000) GS:ff16179555bf5000(0000) knlGS:0000000000000000
[    9.508738] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.508771] CR2: 00007f758bdf0690 CR3: 000000000b1f1002 CR4: 0000000000771ef0
[    9.508810] PKRU: 55555554
[    9.508824] Call Trace:
[    9.508836]  <TASK>
[    9.508849]  rtmsg_ifinfo+0x3c/0xa0
[    9.508872]  register_netdevice+0x889/0x9f0
[    9.508895]  register_netdev+0x1e/0x30
[    9.508915]  loopback_net_init+0x57/0xb0
[    9.508939]  ? vsock_sysctl_init_net+0xb6/0x140
[    9.508971]  ops_init+0x68/0x140
[    9.508995]  setup_net+0x85/0x150
[    9.509022]  copy_net_ns+0xf5/0x200
[    9.509040]  create_new_namespaces+0x117/0x2f0
[    9.509069]  unshare_nsproxy_namespaces+0x85/0xb0
[    9.509096]  ksys_unshare+0x346/0x5e0
[    9.509114]  __x64_sys_unshare+0x12/0x20
[    9.509137]  do_syscall_64+0x104/0xfc0
[    9.509159]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[    9.509186] RIP: 0033:0x7f758bea6bcb
[    9.509205] 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
[    9.509295] RSP: 002b:00007ffff856c0c8 EFLAGS: 00000202 ORIG_RAX: 0000000000000110
[    9.509339] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 00007f758bea6bcb
[    9.509382] RDX: 0000000000000000 RSI: 0000000000477309 RDI: 0000000040000000
[    9.509421] RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000000
[    9.509462] R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffff856e2f0
[    9.509506] R13: 0000000000000001 R14: 0000000000000003 R15: 00007ffff856f74c
[    9.509545]  </TASK>
[    9.509559] ---[ end trace 0000000000000000 ]---
[    9.512525] ------------[ cut here ]------------
[    9.512556] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: ip/1425
[    9.512614] Modules linked in: tcp_diag mptcp_diag inet_diag
[    9.512653] CPU: 0 UID: 0 PID: 1425 Comm: ip Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[    9.512708] Tainted: [W]=WARN
[    9.512730] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    9.512765] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[    9.512793] 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 ab fb ff b9 a6 ff ff
[    9.512890] RSP: 0018:ff3945f381fe7720 EFLAGS: 00010286
[    9.512920] RAX: 00000000ffffffa6 RBX: 0000000000000001 RCX: 0000000000000000
[    9.512963] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff161794c2fc6400
[    9.513008] RBP: 0000000000000000 R08: ff161794ca0adb90 R09: ff161794c2ef402c
[    9.513050] R10: ff161794c3269120 R11: fefefefefefefeff R12: 0000000000000000
[    9.513089] R13: 0000000000000010 R14: ff161794c3269000 R15: ff161794c2fc6400
[    9.513136] FS:  00007f7715504840(0000) GS:ff16179555a75000(0000) knlGS:0000000000000000
[    9.513179] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.513214] CR2: 00000000112a1988 CR3: 0000000006d48004 CR4: 0000000000771ef0
[    9.513253] PKRU: 55555554
[    9.513264] Call Trace:
[    9.513278]  <TASK>
[    9.513294]  rtmsg_ifinfo+0x3c/0xa0
[    9.513317]  __dev_notify_flags+0xb1/0xf0
[    9.513341]  ? rtnl_getlink+0x456/0x5e0
[    9.513363]  netif_change_flags+0x54/0x70
[    9.513387]  do_setlink.isra.0+0x3a2/0x1500
[    9.513408]  ? __nla_validate_parse+0x76/0xf20
[    9.513433]  rtnl_newlink+0x9d3/0xd90
[    9.513454]  ? kmalloc_reserve+0xa9/0x170
[    9.513478]  ? do_setlink.isra.0+0x1500/0x1500
[    9.513506]  rtnetlink_rcv_msg+0x39f/0x460
[    9.513525]  ? netlink_unicast+0x306/0x3a0
[    9.513549]  ? rtnl_calcit.isra.0+0x160/0x160
[    9.513576]  netlink_rcv_skb+0xca/0x140
[    9.513600]  netlink_unicast+0x26b/0x3a0
[    9.513618]  netlink_sendmsg+0x1e2/0x430
[    9.513638]  ____sys_sendmsg+0x14c/0x2b0
[    9.513660]  ___sys_sendmsg+0xe1/0x120
[    9.513684]  __sys_sendmsg+0xad/0x100
[    9.513705]  do_syscall_64+0x104/0xfc0
[    9.513725]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[    9.513753] RIP: 0033:0x7f771573e08e
[    9.513780] Code: 4d 89 d8 e8 94 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
[    9.513879] RSP: 002b:00007ffc66755bd0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[    9.513918] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f771573e08e
[    9.513960] RDX: 0000000000000000 RSI: 00007ffc66755c80 RDI: 0000000000000005
[    9.513999] RBP: 00007ffc66755be0 R08: 0000000000000000 R09: 0000000000000000
[    9.514037] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a10d98a
[    9.514076] R13: 000000000049f620 R14: 0000000000000000 R15: 00007ffc66756350
[    9.514125]  </TASK>
[    9.514139] ---[ end trace 0000000000000000 ]---
[   10.834322] ------------[ cut here ]------------
[   10.834375] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: kworker/u16:1/65
[   10.834440] Modules linked in: tcp_diag mptcp_diag inet_diag
[   10.834479] CPU: 0 UID: 0 PID: 65 Comm: kworker/u16:1 Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[   10.834537] Tainted: [W]=WARN
[   10.834560] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   10.834595] Workqueue: netns cleanup_net
[   10.834620] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[   10.834651] 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 ab fb ff b9 a6 ff ff
[   10.834742] RSP: 0018:ff3945f38023fc08 EFLAGS: 00010286
[   10.834769] RAX: 00000000ffffffa6 RBX: 0000000000000041 RCX: 0000000000000000
[   10.834812] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff161794c2fc6400
[   10.834851] RBP: 0000000000000000 R08: ff161794ca0adb90 R09: ff161794c2ef402c
[   10.834890] R10: ff161794c3269120 R11: fefefefefefefeff R12: 0000000000000000
[   10.834930] R13: 0000000000000010 R14: ff161794c3269000 R15: ff161794c2fc6400
[   10.834973] FS:  0000000000000000(0000) GS:ff16179555a75000(0000) knlGS:0000000000000000
[   10.835014] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   10.835048] CR2: 00007f28f7afa000 CR3: 0000000006048006 CR4: 0000000000771ef0
[   10.835086] PKRU: 55555554
[   10.835105] Call Trace:
[   10.835133]  <TASK>
[   10.835148]  rtmsg_ifinfo+0x3c/0xa0
[   10.835169]  netif_close_many+0xed/0x190
[   10.835192]  unregister_netdevice_many_notify+0x267/0x9d0
[   10.835219]  default_device_exit_batch+0x318/0x390
[   10.835249]  ops_undo_list+0x10b/0x240
[   10.835271]  cleanup_net+0x1d7/0x2e0
[   10.835293]  process_one_work+0x162/0x360
[   10.835317]  worker_thread+0x16e/0x2d0
[   10.835344]  ? rescuer_thread+0x510/0x510
[   10.835371]  kthread+0xe1/0x120
[   10.835391]  ? kthread_park+0xa0/0xa0
[   10.835412]  ret_from_fork+0x16d/0x250
[   10.835436]  ? kthread_park+0xa0/0xa0
[   10.835457]  ret_from_fork_asm+0x11/0x20
[   10.835481]  </TASK>
[   10.835494] ---[ end trace 0000000000000000 ]---
[   10.835608] ------------[ cut here ]------------
[   10.835634] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: kworker/u16:1/65
[   10.835690] Modules linked in: tcp_diag mptcp_diag inet_diag
[   10.835726] CPU: 0 UID: 0 PID: 65 Comm: kworker/u16:1 Tainted: G        W           7.1.0-rc4-virtme #1 PREEMPT(lazy) 
[   10.835781] Tainted: [W]=WARN
[   10.835807] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   10.835838] Workqueue: netns cleanup_net
[   10.835860] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[   10.835890] 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 ab fb ff b9 a6 ff ff
[   10.835976] RSP: 0018:ff3945f38023fc78 EFLAGS: 00010286
[   10.836002] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[   10.836042] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff161794c2fc6400
[   10.836082] RBP: 0000000000000000 R08: ff161794ca0adb90 R09: ff161794c985082c
[   10.836130] R10: ff161794c3269120 R11: fefefefefefefeff R12: 0000000000000000
[   10.836170] R13: 0000000000000011 R14: ff161794c3269000 R15: ff161794c2fc6400
[   10.836209] FS:  0000000000000000(0000) GS:ff16179555a75000(0000) knlGS:0000000000000000
[   10.836250] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   10.836282] CR2: 00007ff28d94f0a0 CR3: 000000000d706001 CR4: 0000000000771ef0
[   10.836320] PKRU: 55555554
[   10.836334] Call Trace:
[   10.836349]  <TASK>
[   10.836369]  unregister_netdevice_many_notify+0x877/0x9d0
[   10.836406]  default_device_exit_batch+0x318/0x390
[   10.836433]  ops_undo_list+0x10b/0x240
[   10.836455]  cleanup_net+0x1d7/0x2e0
[   10.836476]  process_one_work+0x162/0x360
[   10.836497]  worker_thread+0x16e/0x2d0
[   10.836522]  ? rescuer_thread+0x510/0x510
[   10.836543]  kthread+0xe1/0x120
[   10.836570]  ? kthread_park+0xa0/0xa0
[   10.836591]  ret_from_fork+0x16d/0x250
[   10.836613]  ? kthread_park+0xa0/0xa0
[   10.836635]  ret_from_fork_asm+0x11/0x20
[   10.836656]  </TASK>
[   10.836670] ---[ end trace 0000000000000000 ]---