[ 7.361713] ------------[ cut here ]------------
[ 7.361801] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#2: ip/576
[ 7.361889] Modules linked in: netconsole netdevsim
[ 7.361964] CPU: 2 UID: 0 PID: 576 Comm: ip Tainted: G W 7.1.0-rc4-virtme #1 PREEMPT(lazy)
[ 7.362055] Tainted: [W]=WARN
[ 7.362109] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7.362178] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[ 7.362247] Code: 80 00 00 00 e8 09 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 a5 fb ff b9 a6 ff ff
[ 7.362380] RSP: 0018:ff56fe98c0703cc8 EFLAGS: 00010286
[ 7.362442] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[ 7.362517] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff355f76018f3f00
[ 7.362592] RBP: 0000000000000000 R08: ff355f760191a650 R09: ff355f760604802c
[ 7.362668] R10: ff355f7604b30118 R11: fefefefefefefeff R12: 0000000000000000
[ 7.362743] R13: 0000000000000010 R14: ff355f7604b30000 R15: ff355f76018f3f00
[ 7.362824] FS: 00007f738ec2b840(0000) GS:ff355f76b4955000(0000) knlGS:0000000000000000
[ 7.362902] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7.362974] CR2: 00007f738ee2cc20 CR3: 000000000c090003 CR4: 0000000000771ef0
[ 7.363051] PKRU: 55555554
[ 7.363099] Call Trace:
[ 7.363147]
[ 7.363196] rtmsg_ifinfo+0x3c/0xa0
[ 7.363260] register_netdevice+0x8e1/0xa70
[ 7.363318] register_netdev+0x1e/0x30
[ 7.363374] loopback_net_init+0x57/0xb0
[ 7.363432] ? vsock_sysctl_init_net+0xb6/0x140
[ 7.363497] ops_init+0x68/0x140
[ 7.363554] setup_net+0x85/0x150
[ 7.363610] copy_net_ns+0xf5/0x200
[ 7.363666] create_new_namespaces+0x117/0x2f0
[ 7.363732] unshare_nsproxy_namespaces+0x85/0xb0
[ 7.363795] ksys_unshare+0x346/0x5e0
[ 7.363854] __x64_sys_unshare+0x12/0x20
[ 7.363910] do_syscall_64+0x104/0xfc0
[ 7.363972] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 7.364035] RIP: 0033:0x7f738eeedbcb
[ 7.364092] 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
[ 7.364228] RSP: 002b:00007ffd829c6068 EFLAGS: 00000202 ORIG_RAX: 0000000000000110
[ 7.364307] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f738eeedbcb
[ 7.364384] RDX: 0000000000000000 RSI: 0000000000477309 RDI: 0000000040000000
[ 7.364460] RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000000
[ 7.364536] R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffd829c8290
[ 7.364610] R13: 0000000000000001 R14: 0000000000000003 R15: 00007ffd829c888f
[ 7.364686]
[ 7.364733] ---[ end trace 0000000000000000 ]---
[ 7.365346] ------------[ cut here ]------------
[ 7.365384] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: python3/575
[ 7.365451] Modules linked in: netconsole netdevsim
[ 7.365482] CPU: 0 UID: 0 PID: 575 Comm: python3 Tainted: G W 7.1.0-rc4-virtme #1 PREEMPT(lazy)
[ 7.365546] Tainted: [W]=WARN
[ 7.365568] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7.365602] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[ 7.365637] Code: 80 00 00 00 e8 09 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 a5 fb ff b9 a6 ff ff
[ 7.365743] RSP: 0018:ff56fe98c072b9d0 EFLAGS: 00010286
[ 7.365781] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[ 7.365833] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff355f76018f3800
[ 7.365880] RBP: 0000000000000000 R08: ff355f760301e510 R09: ff355f76032a8030
[ 7.365935] R10: ff355f7606062118 R11: fefefefefefefeff R12: 0000000000000000
[ 7.365980] R13: 0000000000000010 R14: ff355f7606062000 R15: ff355f76018f3800
[ 7.366029] FS: 00007fa3ba609400(0000) GS:ff355f76b4855000(0000) knlGS:0000000000000000
[ 7.366076] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7.366115] CR2: 00005599e0133bc8 CR3: 0000000001980003 CR4: 0000000000771ef0
[ 7.366163] PKRU: 55555554
[ 7.366179] Call Trace:
[ 7.366195]
[ 7.366214] rtmsg_ifinfo+0x3c/0xa0
[ 7.366240] register_netdevice+0x8e1/0xa70
[ 7.366265] nsim_create+0x319/0x410 [netdevsim]
[ 7.366301] __nsim_dev_port_add+0x1cc/0x420 [netdevsim]
[ 7.366331] nsim_drv_probe+0x655/0x750 [netdevsim]
[ 7.366362] really_probe+0xc9/0x290
[ 7.366389] ? driver_probe_device+0xe0/0xe0
[ 7.366416] __driver_probe_device+0x8d/0x160
[ 7.366447] driver_probe_device+0x1f/0xe0
[ 7.366474] __device_attach_driver+0x71/0x100
[ 7.366504] bus_for_each_drv+0x9d/0x100
[ 7.366533] __device_attach+0xb0/0x1b0
[ 7.366552] device_initial_probe+0x4a/0x70
[ 7.366576] bus_probe_device+0x3c/0xb0
[ 7.366596] device_add+0x675/0x8a0
[ 7.366621] new_device_store+0x19b/0x2b0 [netdevsim]
[ 7.366651] kernfs_fop_write_iter+0x151/0x200
[ 7.366685] vfs_write+0x257/0x5c0
[ 7.366710] ksys_write+0x7b/0x110
[ 7.366732] do_syscall_64+0x104/0xfc0
[ 7.366754] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 7.366790] RIP: 0033:0x7fa3ba79108e
[ 7.366833] 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 c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
[ 7.366956] RSP: 002b:00007ffc203a9160 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 7.366999] RAX: ffffffffffffffda RBX: 0000000000000008 RCX: 00007fa3ba79108e
[ 7.367043] RDX: 0000000000000008 RSI: 00005599e00eb360 RDI: 0000000000000006
[ 7.367084] RBP: 00007ffc203a9170 R08: 0000000000000000 R09: 0000000000000000
[ 7.367128] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fa3ba609390
[ 7.367169] R13: 00005599e00eb360 R14: 0000000000000006 R15: 00007fa3ba5950d0
[ 7.367222]
[ 7.367237] ---[ end trace 0000000000000000 ]---
[ 7.525860] ------------[ cut here ]------------
[ 7.525978] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#2: kworker/u16:1/65
[ 7.526108] Modules linked in: netconsole netdevsim
[ 7.526188] CPU: 2 UID: 0 PID: 65 Comm: kworker/u16:1 Tainted: G W 7.1.0-rc4-virtme #1 PREEMPT(lazy)
[ 7.526288] Tainted: [W]=WARN
[ 7.526346] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7.526424] Workqueue: netns cleanup_net
[ 7.526484] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[ 7.526551] Code: 80 00 00 00 e8 09 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 a5 fb ff b9 a6 ff ff
[ 7.526686] RSP: 0018:ff56fe98c023fc78 EFLAGS: 00010286
[ 7.526757] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[ 7.526840] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff355f7601906c00
[ 7.526916] RBP: 0000000000000000 R08: ff355f760191a650 R09: ff355f7604b2e82c
[ 7.527010] R10: ff355f7604b30118 R11: fefefefefefefeff R12: 0000000000000000
[ 7.527094] R13: 0000000000000011 R14: ff355f7604b30000 R15: ff355f7601906c00
[ 7.527183] FS: 0000000000000000(0000) GS:ff355f76b4955000(0000) knlGS:0000000000000000
[ 7.527268] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7.527338] CR2: 00007f2fce9c18f4 CR3: 000000000972f002 CR4: 0000000000771ef0
[ 7.527417] PKRU: 55555554
[ 7.527467] Call Trace:
[ 7.527518]
[ 7.527569] unregister_netdevice_many_notify+0x595/0xa40
[ 7.527636] default_device_exit_batch+0x328/0x3a0
[ 7.527701] ops_undo_list+0x10b/0x240
[ 7.527760] cleanup_net+0x1d7/0x2e0
[ 7.527819] process_one_work+0x162/0x360
[ 7.527882] worker_thread+0x16e/0x2d0
[ 7.527955] ? rescuer_thread+0x510/0x510
[ 7.528013] kthread+0xe1/0x120
[ 7.528072] ? kthread_park+0xa0/0xa0
[ 7.528131] ret_from_fork+0x16d/0x250
[ 7.528192] ? kthread_park+0xa0/0xa0
[ 7.528255] ret_from_fork_asm+0x11/0x20
[ 7.528316]
[ 7.528366] ---[ end trace 0000000000000000 ]---