[ 3.153566] ------------[ cut here ]------------
[ 3.153611] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: ip/228
[ 3.153672] Modules linked in: netdevsim
[ 3.153697] CPU: 0 UID: 0 PID: 228 Comm: ip Tainted: G W 7.1.0-rc4-virtme #1 PREEMPT(lazy)
[ 3.153761] Tainted: [W]=WARN
[ 3.153781] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3.153819] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[ 3.153847] 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
[ 3.153952] RSP: 0018:ff6cb9f64044fcc8 EFLAGS: 00010286
[ 3.153980] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[ 3.154026] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff14172a81d79500
[ 3.154066] RBP: 0000000000000000 R08: ff14172a82cb8d50 R09: ff14172a830bd02c
[ 3.154108] R10: ff14172a8113c118 R11: fefefefefefefeff R12: 0000000000000000
[ 3.154154] R13: 0000000000000010 R14: ff14172a8113c000 R15: ff14172a81d79500
[ 3.154203] FS: 00007ff0e6cc9840(0000) GS:ff14172b39455000(0000) knlGS:0000000000000000
[ 3.154247] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3.154283] CR2: 00007ff0e6ecac20 CR3: 0000000001977004 CR4: 0000000000771ef0
[ 3.154325] PKRU: 55555554
[ 3.154340] Call Trace:
[ 3.154354]
[ 3.154370] rtmsg_ifinfo+0x3c/0xa0
[ 3.154393] register_netdevice+0x8e1/0xa70
[ 3.154415] register_netdev+0x1e/0x30
[ 3.154436] loopback_net_init+0x57/0xb0
[ 3.154462] ? vsock_sysctl_init_net+0xb6/0x140
[ 3.154492] ops_init+0x68/0x140
[ 3.154514] setup_net+0x85/0x150
[ 3.154536] copy_net_ns+0xf5/0x200
[ 3.154559] create_new_namespaces+0x117/0x2f0
[ 3.154592] unshare_nsproxy_namespaces+0x85/0xb0
[ 3.154621] ksys_unshare+0x346/0x5e0
[ 3.154642] __x64_sys_unshare+0x12/0x20
[ 3.154662] do_syscall_64+0x104/0xfc0
[ 3.154685] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 3.154721] RIP: 0033:0x7ff0e6f8bbcb
[ 3.154743] 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
[ 3.154836] RSP: 002b:00007ffd03b080d8 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3.154879] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007ff0e6f8bbcb
[ 3.154924] RDX: 0000000000000000 RSI: 0000000000477309 RDI: 0000000040000000
[ 3.154966] RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000000
[ 3.155004] R10: 0000000000000000 R11: 0000000000000206 R12: 00007ffd03b0a300
[ 3.155048] R13: 0000000000000001 R14: 0000000000000003 R15: 00007ffd03b0b8a3
[ 3.155094]
[ 3.155106] ---[ end trace 0000000000000000 ]---
[ 3.155585] ------------[ cut here ]------------
[ 3.155623] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: python3/227
[ 3.155683] Modules linked in: netdevsim
[ 3.155706] CPU: 3 UID: 0 PID: 227 Comm: python3 Tainted: G W 7.1.0-rc4-virtme #1 PREEMPT(lazy)
[ 3.155763] Tainted: [W]=WARN
[ 3.155782] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3.155819] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[ 3.155848] 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
[ 3.155944] RSP: 0018:ff6cb9f6403e79d0 EFLAGS: 00010286
[ 3.155973] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[ 3.156013] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff14172a8190e100
[ 3.156052] RBP: 0000000000000000 R08: ff14172a81940990 R09: ff14172a84ef8030
[ 3.156095] R10: ff14172a84f06118 R11: fefefefefefefeff R12: 0000000000000000
[ 3.156142] R13: 0000000000000010 R14: ff14172a84f06000 R15: ff14172a8190e100
[ 3.156190] FS: 00007fe632f73400(0000) GS:ff14172b395d5000(0000) knlGS:0000000000000000
[ 3.156234] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3.156270] CR2: 0000555b02333ed8 CR3: 0000000004fb7001 CR4: 0000000000771ef0
[ 3.156313] PKRU: 55555554
[ 3.156333] Call Trace:
[ 3.156349]
[ 3.156365] rtmsg_ifinfo+0x3c/0xa0
[ 3.156390] register_netdevice+0x8e1/0xa70
[ 3.156409] nsim_create+0x319/0x410 [netdevsim]
[ 3.156442] __nsim_dev_port_add+0x1cc/0x420 [netdevsim]
[ 3.156467] nsim_drv_probe+0x655/0x750 [netdevsim]
[ 3.156496] really_probe+0xc9/0x290
[ 3.156521] ? driver_probe_device+0xe0/0xe0
[ 3.156552] __driver_probe_device+0x8d/0x160
[ 3.156580] driver_probe_device+0x1f/0xe0
[ 3.156600] __device_attach_driver+0x71/0x100
[ 3.156627] bus_for_each_drv+0x9d/0x100
[ 3.156649] __device_attach+0xb0/0x1b0
[ 3.156672] device_initial_probe+0x4a/0x70
[ 3.156694] bus_probe_device+0x3c/0xb0
[ 3.156714] device_add+0x675/0x8a0
[ 3.156734] new_device_store+0x19b/0x2b0 [netdevsim]
[ 3.156762] kernfs_fop_write_iter+0x151/0x200
[ 3.156793] vfs_write+0x257/0x5c0
[ 3.156816] ksys_write+0x7b/0x110
[ 3.156838] do_syscall_64+0x104/0xfc0
[ 3.156860] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 3.156893] RIP: 0033:0x7fe6330fb08e
[ 3.156919] 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
[ 3.157018] RSP: 002b:00007ffe48d30bf0 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 3.157062] RAX: ffffffffffffffda RBX: 0000000000000009 RCX: 00007fe6330fb08e
[ 3.157106] RDX: 0000000000000009 RSI: 0000555b022eb670 RDI: 0000000000000006
[ 3.157151] RBP: 00007ffe48d30c00 R08: 0000000000000000 R09: 0000000000000000
[ 3.157196] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fe632f73390
[ 3.157244] R13: 0000555b022eb670 R14: 0000000000000006 R15: 00007fe632f010d0
[ 3.157286]
[ 3.157298] ---[ end trace 0000000000000000 ]---
[ 3.257683] ------------[ cut here ]------------
[ 3.257721] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: kworker/u16:1/64
[ 3.257783] Modules linked in: netdevsim
[ 3.257808] CPU: 0 UID: 0 PID: 64 Comm: kworker/u16:1 Tainted: G W 7.1.0-rc4-virtme #1 PREEMPT(lazy)
[ 3.257866] Tainted: [W]=WARN
[ 3.257893] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3.257926] Workqueue: netns cleanup_net
[ 3.257951] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[ 3.257975] 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
[ 3.258069] RSP: 0018:ff6cb9f640237c78 EFLAGS: 00010286
[ 3.258099] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[ 3.258146] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff14172a81d79500
[ 3.258187] RBP: 0000000000000000 R08: ff14172a82cb8d50 R09: ff14172a8333c82c
[ 3.258226] R10: ff14172a8113c118 R11: fefefefefefefeff R12: 0000000000000000
[ 3.258272] R13: 0000000000000011 R14: ff14172a8113c000 R15: ff14172a81d79500
[ 3.258310] FS: 0000000000000000(0000) GS:ff14172b39455000(0000) knlGS:0000000000000000
[ 3.258352] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3.258388] CR2: 00007fce5d9e6430 CR3: 0000000004e1b005 CR4: 0000000000771ef0
[ 3.258430] PKRU: 55555554
[ 3.258443] Call Trace:
[ 3.258459]
[ 3.258473] unregister_netdevice_many_notify+0x595/0xa40
[ 3.258506] default_device_exit_batch+0x328/0x3a0
[ 3.258529] ops_undo_list+0x10b/0x240
[ 3.258552] cleanup_net+0x1d7/0x2e0
[ 3.258572] process_one_work+0x162/0x360
[ 3.258600] worker_thread+0x16e/0x2d0
[ 3.258623] ? rescuer_thread+0x510/0x510
[ 3.258644] kthread+0xe1/0x120
[ 3.258668] ? kthread_park+0xa0/0xa0
[ 3.258686] ret_from_fork+0x16d/0x250
[ 3.258710] ? kthread_park+0xa0/0xa0
[ 3.258733] ret_from_fork_asm+0x11/0x20
[ 3.258754]
[ 3.258768] ---[ end trace 0000000000000000 ]---