[ 2.369097] ------------[ cut here ]------------
[ 2.369155] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#3: ip/167
[ 2.369211] Modules linked in:
[ 2.369236] CPU: 3 UID: 0 PID: 167 Comm: ip Tainted: G W 7.1.0-rc4-virtme #1 PREEMPT(lazy)
[ 2.369292] Tainted: [W]=WARN
[ 2.369311] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2.369345] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[ 2.369372] 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
[ 2.369466] RSP: 0018:ff6cb9f640447cc8 EFLAGS: 00010286
[ 2.369488] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[ 2.369527] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff14172a81d79b00
[ 2.369565] RBP: 0000000000000000 R08: ff14172a82cbb290 R09: ff14172a84efa02c
[ 2.369609] R10: ff14172a830bd118 R11: fefefefefefefeff R12: 0000000000000000
[ 2.369648] R13: 0000000000000010 R14: ff14172a830bd000 R15: ff14172a81d79b00
[ 2.369696] FS: 00007faad4b2d840(0000) GS:ff14172b395d5000(0000) knlGS:0000000000000000
[ 2.369742] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2.369774] CR2: 0000000000479648 CR3: 0000000004cbe004 CR4: 0000000000771ef0
[ 2.369816] PKRU: 55555554
[ 2.369831] Call Trace:
[ 2.369844]
[ 2.369859] rtmsg_ifinfo+0x3c/0xa0
[ 2.369883] register_netdevice+0x8e1/0xa70
[ 2.369909] register_netdev+0x1e/0x30
[ 2.369929] loopback_net_init+0x57/0xb0
[ 2.369950] ? vsock_sysctl_init_net+0xb6/0x140
[ 2.369977] ops_init+0x68/0x140
[ 2.369999] setup_net+0x85/0x150
[ 2.370025] copy_net_ns+0xf5/0x200
[ 2.370044] create_new_namespaces+0x117/0x2f0
[ 2.370073] unshare_nsproxy_namespaces+0x85/0xb0
[ 2.370102] ksys_unshare+0x346/0x5e0
[ 2.370124] __x64_sys_unshare+0x12/0x20
[ 2.370147] do_syscall_64+0x104/0xfc0
[ 2.370170] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 2.370201] RIP: 0033:0x7faad4defbcb
[ 2.370223] 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
[ 2.370313] RSP: 002b:00007ffdf1f45058 EFLAGS: 00000202 ORIG_RAX: 0000000000000110
[ 2.370356] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007faad4defbcb
[ 2.370394] RDX: 0000000000000000 RSI: 0000000000477309 RDI: 0000000040000000
[ 2.370432] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
[ 2.370467] R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffdf1f47280
[ 2.370505] R13: 0000000000000001 R14: 00007faad4b2d6f8 R15: 00007ffdf1f4789b
[ 2.370544]
[ 2.370557] ---[ end trace 0000000000000000 ]---
[ 2.387261] ------------[ cut here ]------------
[ 2.387329] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#2: python3/166
[ 2.387415] Modules linked in: netdevsim
[ 2.387475] CPU: 2 UID: 0 PID: 166 Comm: python3 Tainted: G W 7.1.0-rc4-virtme #1 PREEMPT(lazy)
[ 2.387564] Tainted: [W]=WARN
[ 2.387618] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2.387684] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[ 2.387746] 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
[ 2.387872] RSP: 0018:ff6cb9f64043f9d0 EFLAGS: 00010286
[ 2.387942] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[ 2.388019] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff14172a830d7600
[ 2.388092] RBP: 0000000000000000 R08: ff14172a81950390 R09: ff14172a82f6d030
[ 2.388174] R10: ff14172a82f74118 R11: fefefefefefefeff R12: 0000000000000000
[ 2.388248] R13: 0000000000000010 R14: ff14172a82f74000 R15: ff14172a830d7600
[ 2.388325] FS: 00007f681d605400(0000) GS:ff14172b39555000(0000) knlGS:0000000000000000
[ 2.388400] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2.388467] CR2: 00007f681da060a1 CR3: 0000000002ce8004 CR4: 0000000000771ef0
[ 2.388542] PKRU: 55555554
[ 2.388588] Call Trace:
[ 2.388635]
[ 2.388682] rtmsg_ifinfo+0x3c/0xa0
[ 2.388737] register_netdevice+0x8e1/0xa70
[ 2.388794] nsim_create+0x319/0x410 [netdevsim]
[ 2.388858] __nsim_dev_port_add+0x1cc/0x420 [netdevsim]
[ 2.388938] nsim_drv_probe+0x655/0x750 [netdevsim]
[ 2.389002] really_probe+0xc9/0x290
[ 2.389059] ? driver_probe_device+0xe0/0xe0
[ 2.389135] __driver_probe_device+0x8d/0x160
[ 2.389196] driver_probe_device+0x1f/0xe0
[ 2.389250] __device_attach_driver+0x71/0x100
[ 2.389311] bus_for_each_drv+0x9d/0x100
[ 2.389365] __device_attach+0xb0/0x1b0
[ 2.389420] device_initial_probe+0x4a/0x70
[ 2.389474] bus_probe_device+0x3c/0xb0
[ 2.389528] device_add+0x675/0x8a0
[ 2.389583] new_device_store+0x19b/0x2b0 [netdevsim]
[ 2.389645] kernfs_fop_write_iter+0x151/0x200
[ 2.389707] vfs_write+0x257/0x5c0
[ 2.389764] ksys_write+0x7b/0x110
[ 2.389819] do_syscall_64+0x104/0xfc0
[ 2.389882] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 2.389943] RIP: 0033:0x7f681d78d08e
[ 2.389997] 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
[ 2.390128] RSP: 002b:00007ffc2b8f1760 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 2.390202] RAX: ffffffffffffffda RBX: 0000000000000009 RCX: 00007f681d78d08e
[ 2.390276] RDX: 0000000000000009 RSI: 0000556aa6d49c20 RDI: 0000000000000006
[ 2.390349] RBP: 00007ffc2b8f1770 R08: 0000000000000000 R09: 0000000000000000
[ 2.390422] R10: 0000000000000000 R11: 0000000000000202 R12: 00007f681d605390
[ 2.390496] R13: 0000556aa6d49c20 R14: 0000000000000006 R15: 00007f681d5910d0
[ 2.390569]
[ 2.390615] ---[ end trace 0000000000000000 ]---
[ 2.472446] ------------[ cut here ]------------
[ 2.472490] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#0: kworker/u16:1/64
[ 2.472555] Modules linked in: netdevsim
[ 2.472580] CPU: 0 UID: 0 PID: 64 Comm: kworker/u16:1 Tainted: G W 7.1.0-rc4-virtme #1 PREEMPT(lazy)
[ 2.472640] Tainted: [W]=WARN
[ 2.472663] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2.472700] Workqueue: netns cleanup_net
[ 2.472725] RIP: 0010:rtmsg_ifinfo_build_skb+0xc8/0x110
[ 2.472758] 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
[ 2.472851] RSP: 0018:ff6cb9f640237c78 EFLAGS: 00010286
[ 2.472882] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[ 2.472921] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff14172a81d79500
[ 2.472955] RBP: 0000000000000000 R08: ff14172a82cbb290 R09: ff14172a84e0482c
[ 2.472995] R10: ff14172a830bd118 R11: fefefefefefefeff R12: 0000000000000000
[ 2.473036] R13: 0000000000000011 R14: ff14172a830bd000 R15: ff14172a81d79500
[ 2.473080] FS: 0000000000000000(0000) GS:ff14172b39455000(0000) knlGS:0000000000000000
[ 2.473135] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2.473170] CR2: 00007f4a13aa1ab0 CR3: 0000000004d76001 CR4: 0000000000771ef0
[ 2.473213] PKRU: 55555554
[ 2.473227] Call Trace:
[ 2.473245]
[ 2.473263] unregister_netdevice_many_notify+0x595/0xa40
[ 2.473296] default_device_exit_batch+0x328/0x3a0
[ 2.473325] ops_undo_list+0x10b/0x240
[ 2.473349] cleanup_net+0x1d7/0x2e0
[ 2.473370] process_one_work+0x162/0x360
[ 2.473396] worker_thread+0x16e/0x2d0
[ 2.473417] ? rescuer_thread+0x510/0x510
[ 2.473438] kthread+0xe1/0x120
[ 2.473461] ? kthread_park+0xa0/0xa0
[ 2.473484] ret_from_fork+0x16d/0x250
[ 2.473504] ? kthread_park+0xa0/0xa0
[ 2.473523] ret_from_fork_asm+0x11/0x20
[ 2.473548]
[ 2.473563] ---[ end trace 0000000000000000 ]---