[ 9.067998][ T174] ------------[ cut here ]------------
[ 9.068208][ T174] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#0: ip/174
[ 9.068471][ T174] Modules linked in:
[ 9.068592][ T174] CPU: 0 UID: 0 PID: 174 Comm: ip Tainted: G W 7.1.0-rc4-virtme #1 PREEMPT(full)
[ 9.068834][ T174] Tainted: [W]=WARN
[ 9.068923][ T174] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9.069081][ T174] RIP: 0010:rtmsg_ifinfo_build_skb+0x1a6/0x250
[ 9.069241][ T174] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 a8 cb f0 ff b9 a6 ff ff
[ 9.070088][ T174] RSP: 0018:ffa00000007d7aa8 EFLAGS: 00010286
[ 9.070239][ T174] RAX: 00000000ffffffa6 RBX: ff1100000d1e2dc0 RCX: 1ff40000000faf1b
[ 9.070420][ T174] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff1100000d1e2e70
[ 9.070595][ T174] RBP: ff11000009f31000 R08: 1fe2200001a3c5cf R09: ff1100000b24d180
[ 9.070815][ T174] R10: 0000000000000000 R11: 0000000000000001 R12: 00000000ffffffff
[ 9.070990][ T174] R13: 0000000000000000 R14: 0000000000000000 R15: ff11000009f31000
[ 9.071170][ T174] FS: 00007f2470f2c840(0000) GS:ff11000079d79000(0000) knlGS:0000000000000000
[ 9.071385][ T174] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9.071536][ T174] CR2: 0000000000479648 CR3: 000000000ac11003 CR4: 0000000000771ef0
[ 9.071714][ T174] PKRU: 55555554
[ 9.071802][ T174] Call Trace:
[ 9.071888][ T174]
[ 9.071951][ T174] ? ip6_route_dev_notify+0x250/0x380
[ 9.072074][ T174] rtmsg_ifinfo_event.part.0+0x2c/0x130
[ 9.072193][ T174] ? notifier_call_chain+0xb0/0x320
[ 9.072320][ T174] rtmsg_ifinfo+0x5c/0xb0
[ 9.072411][ T174] register_netdevice+0x1526/0x1bc0
[ 9.072530][ T174] ? unregister_netdevice_queue+0x470/0x470
[ 9.072675][ T174] ? alloc_netdev_mqs+0xeda/0x1430
[ 9.072793][ T174] register_netdev+0x23/0x40
[ 9.072909][ T174] loopback_net_init+0x7d/0x150
[ 9.073028][ T174] ops_init+0x187/0x560
[ 9.073123][ T174] setup_net+0x11b/0x3b0
[ 9.073215][ T174] ? unregister_pernet_device+0x80/0x80
[ 9.073338][ T174] ? lockdep_init_map_type+0x5d/0x250
[ 9.073456][ T174] ? mutex_init_lockdep+0xf6/0x120
[ 9.073581][ T174] copy_net_ns+0x2fd/0x450
[ 9.073701][ T174] create_new_namespaces+0x371/0xa10
[ 9.073822][ T174] unshare_nsproxy_namespaces+0xa5/0x150
[ 9.073939][ T174] ksys_unshare+0x47e/0x8c0
[ 9.074065][ T174] ? walk_process_tree+0x350/0x350
[ 9.074184][ T174] ? __ia32_sys_open+0x1b0/0x1b0
[ 9.074311][ T174] __x64_sys_unshare+0x34/0x50
[ 9.074427][ T174] ? do_syscall_64+0x82/0xfc0
[ 9.074545][ T174] do_syscall_64+0x117/0xfc0
[ 9.074661][ T174] ? trace_hardirqs_off+0xd/0x30
[ 9.074778][ T174] ? exc_page_fault+0xee/0x100
[ 9.074896][ T174] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 9.075049][ T174] RIP: 0033:0x7f24711eebcb
[ 9.075174][ T174] 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
[ 9.075603][ T174] RSP: 002b:00007ffe6130e8f8 EFLAGS: 00000202 ORIG_RAX: 0000000000000110
[ 9.075783][ T174] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f24711eebcb
[ 9.075957][ T174] RDX: 0000000000000000 RSI: 0000000000477309 RDI: 0000000040000000
[ 9.076136][ T174] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
[ 9.076318][ T174] R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffe61310b20
[ 9.076494][ T174] R13: 0000000000000001 R14: 00007f2470f2c6f8 R15: 00007ffe61312862
[ 9.076675][ T174]
[ 9.076764][ T174] irq event stamp: 26125
[ 9.076852][ T174] hardirqs last enabled at (26133): [] __up_console_sem+0x5a/0x70
[ 9.077062][ T174] hardirqs last disabled at (26140): [] __up_console_sem+0x3f/0x70
[ 9.077271][ T174] softirqs last enabled at (25720): [] handle_softirqs+0x611/0x940
[ 9.077472][ T174] softirqs last disabled at (25031): [] __irq_exit_rcu+0x103/0x1c0
[ 9.077675][ T174] ---[ end trace 0000000000000000 ]---
[ 9.211275][ T173] ------------[ cut here ]------------
[ 9.211670][ T173] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#2: python3/173
[ 9.212113][ T173] Modules linked in: netdevsim
[ 9.212422][ T173] CPU: 2 UID: 0 PID: 173 Comm: python3 Tainted: G W 7.1.0-rc4-virtme #1 PREEMPT(full)
[ 9.212788][ T173] Tainted: [W]=WARN
[ 9.212955][ T173] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9.213207][ T173] RIP: 0010:rtmsg_ifinfo_build_skb+0x1a6/0x250
[ 9.213480][ T173] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 a8 cb f0 ff b9 a6 ff ff
[ 9.214167][ T173] RSP: 0018:ffa0000000817500 EFLAGS: 00010286
[ 9.214430][ T173] RAX: 00000000ffffffa6 RBX: ff1100000d1d6340 RCX: 1ff4000000102e66
[ 9.214709][ T173] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff1100000d1d63f0
[ 9.215019][ T173] RBP: ff1100000c81a000 R08: 1fe2200001a3ac7f R09: ff1100000b24af48
[ 9.215443][ T173] R10: 0000000000000002 R11: 0000000000000001 R12: 00000000ffffffff
[ 9.215738][ T173] R13: 0000000000000000 R14: 0000000000000000 R15: ff1100000c81a000
[ 9.216015][ T173] FS: 00007f4670eb0400(0000) GS:ff11000079e79000(0000) knlGS:0000000000000000
[ 9.216369][ T173] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9.216614][ T173] CR2: 0000555b4d430c60 CR3: 000000000cca6002 CR4: 0000000000771ef0
[ 9.216899][ T173] PKRU: 55555554
[ 9.217080][ T173] Call Trace:
[ 9.217245][ T173]
[ 9.217389][ T173] rtmsg_ifinfo_event.part.0+0x2c/0x130
[ 9.217600][ T173] rtmsg_ifinfo+0x5c/0xb0
[ 9.217767][ T173] register_netdevice+0x1526/0x1bc0
[ 9.217971][ T173] ? unregister_netdevice_queue+0x470/0x470
[ 9.218221][ T173] ? __debugfs_create_file+0x2cf/0x3c0
[ 9.218444][ T173] nsim_init_netdevsim+0x80e/0xcb0 [netdevsim]
[ 9.218691][ T173] nsim_create+0x45b/0x5b0 [netdevsim]
[ 9.218899][ T173] __nsim_dev_port_add+0x30b/0x7a0 [netdevsim]
[ 9.219152][ T173] ? add_timer_on+0x580/0x580
[ 9.219372][ T173] ? nsim_dev_get_vfs+0x90/0x90 [netdevsim]
[ 9.219614][ T173] ? is_module_address+0x68/0x110
[ 9.219821][ T173] ? static_obj+0x5d/0x90
[ 9.219986][ T173] ? mark_held_locks+0x40/0x70
[ 9.220203][ T173] ? nsim_dev_hwstats_init+0x3a4/0x4d0 [netdevsim]
[ 9.220462][ T173] nsim_drv_probe+0x59e/0x8d0 [netdevsim]
[ 9.220668][ T173] call_driver_probe+0x61/0x1c0
[ 9.220872][ T173] really_probe+0x199/0x760
[ 9.221081][ T173] ? driver_probe_device+0x130/0x130
[ 9.221298][ T173] __driver_probe_device+0x1dc/0x430
[ 9.221521][ T173] driver_probe_device+0x4a/0x130
[ 9.221725][ T173] __device_attach_driver+0x16d/0x2a0
[ 9.221928][ T173] bus_for_each_drv+0x135/0x1e0
[ 9.222137][ T173] ? bus_find_device_reverse+0x1c0/0x1c0
[ 9.222358][ T173] __device_attach+0x1a6/0x410
[ 9.222563][ T173] ? __rwlock_init+0x150/0x150
[ 9.222771][ T173] ? __driver_attach_async_helper+0x2a0/0x2a0
[ 9.223012][ T173] ? do_raw_spin_unlock+0x59/0x250
[ 9.223224][ T173] ? _raw_spin_unlock+0x2d/0x50
[ 9.223441][ T173] device_initial_probe+0x8b/0xc0
[ 9.223644][ T173] bus_probe_device+0x63/0x160
[ 9.223847][ T173] device_add+0xb16/0x1130
[ 9.224057][ T173] ? __fw_devlink_link_to_consumers.isra.0+0x2d0/0x2d0
[ 9.224316][ T173] ? __init_waitqueue_head+0xcb/0x160
[ 9.224520][ T173] ? pm_runtime_init+0x323/0x3f0
[ 9.224727][ T173] new_device_store+0x3d4/0x730 [netdevsim]
[ 9.224969][ T173] ? __lock_release.isra.0+0x6b/0x1a0
[ 9.225180][ T173] ? new_port_store+0x1a0/0x1a0 [netdevsim]
[ 9.225435][ T173] ? sysfs_file_kobj+0xb3/0x1e0
[ 9.225638][ T173] ? sysfs_file_kobj+0xbd/0x1e0
[ 9.225841][ T173] ? sysfs_file_ops+0x140/0x140
[ 9.226053][ T173] kernfs_fop_write_iter+0x335/0x510
[ 9.226252][ T173] ? kernfs_ops+0xf0/0xf0
[ 9.226427][ T173] new_sync_write+0x333/0x750
[ 9.226646][ T173] ? __lock_acquire+0x508/0xc10
[ 9.226846][ T173] ? new_sync_read+0x740/0x740
[ 9.227055][ T173] ? lock_acquire.part.0+0xbc/0x260
[ 9.227254][ T173] ? ksys_write+0x116/0x250
[ 9.227475][ T173] vfs_write+0x6a4/0xc10
[ 9.227639][ T173] ksys_write+0x116/0x250
[ 9.227803][ T173] ? __ia32_sys_read+0xc0/0xc0
[ 9.228002][ T173] ? kernfs_fop_llseek+0x160/0x1f0
[ 9.228213][ T173] ? rcu_is_watching+0x15/0xd0
[ 9.228430][ T173] do_syscall_64+0x117/0xfc0
[ 9.228632][ T173] ? irq_exit_rcu+0x1a/0x30
[ 9.228835][ T173] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 9.229078][ T173] RIP: 0033:0x7f467103808e
[ 9.229299][ T173] 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
[ 9.229887][ T173] RSP: 002b:00007ffe0d89f460 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 9.230173][ T173] RAX: ffffffffffffffda RBX: 0000000000000008 RCX: 00007f467103808e
[ 9.230460][ T173] RDX: 0000000000000008 RSI: 000055c267ce3980 RDI: 0000000000000006
[ 9.230735][ T173] RBP: 00007ffe0d89f470 R08: 0000000000000000 R09: 0000000000000000
[ 9.231010][ T173] R10: 0000000000000000 R11: 0000000000000202 R12: 00007f4670eb0390
[ 9.231303][ T173] R13: 000055c267ce3980 R14: 0000000000000006 R15: 00007f4670e3d0d0
[ 9.231591][ T173]
[ 9.231761][ T173] irq event stamp: 322061
[ 9.231923][ T173] hardirqs last enabled at (322071): [] __up_console_sem+0x5a/0x70
[ 9.232243][ T173] hardirqs last disabled at (322080): [] __up_console_sem+0x3f/0x70
[ 9.232572][ T173] softirqs last enabled at (321308): [] handle_softirqs+0x611/0x940
[ 9.232884][ T173] softirqs last disabled at (321283): [] __irq_exit_rcu+0x103/0x1c0
[ 9.233203][ T173] ---[ end trace 0000000000000000 ]---
[ 9.676565][ T12] ------------[ cut here ]------------
[ 9.676778][ T12] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#1: kworker/u16:0/12
[ 9.677085][ T12] Modules linked in: netdevsim
[ 9.677241][ T12] CPU: 1 UID: 0 PID: 12 Comm: kworker/u16:0 Tainted: G W 7.1.0-rc4-virtme #1 PREEMPT(full)
[ 9.677599][ T12] Tainted: [W]=WARN
[ 9.677725][ T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9.677934][ T12] Workqueue: netns cleanup_net
[ 9.678082][ T12] RIP: 0010:rtmsg_ifinfo_build_skb+0x1a6/0x250
[ 9.678244][ T12] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 a8 cb f0 ff b9 a6 ff ff
[ 9.678750][ T12] RSP: 0018:ffa00000000c7878 EFLAGS: 00010286
[ 9.678906][ T12] RAX: 00000000ffffffa6 RBX: ff1100000d256c40 RCX: 1ff4000000018ed5
[ 9.679084][ T12] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff1100000d256cf0
[ 9.679309][ T12] RBP: ff11000009f31000 R08: 1fe2200001a4ad9f R09: ff11000001b051d0
[ 9.679487][ T12] R10: 0000000000000001 R11: 0000000000000001 R12: 00000000ffffffff
[ 9.679664][ T12] R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000
[ 9.679839][ T12] FS: 0000000000000000(0000) GS:ff11000079df9000(0000) knlGS:0000000000000000
[ 9.680135][ T12] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9.680292][ T12] CR2: 00007fb5a52b8ab0 CR3: 000000000c9f6006 CR4: 0000000000771ef0
[ 9.680471][ T12] PKRU: 55555554
[ 9.680557][ T12] Call Trace:
[ 9.680643][ T12]
[ 9.680704][ T12] unregister_netdevice_many_notify+0xce3/0x1b30
[ 9.680861][ T12] ? unregister_netdevice_queued+0x80/0x80
[ 9.681009][ T12] ? perf_trace_sched_switch+0x7d0/0x7d0
[ 9.681142][ T12] default_device_exit_batch+0x38b/0x600
[ 9.681305][ T12] ? unregister_netdev+0x60/0x60
[ 9.681427][ T12] ? perf_trace_sched_switch+0x7d0/0x7d0
[ 9.681546][ T12] ops_undo_list+0x2ce/0x8f0
[ 9.681665][ T12] ? rtnl_net_dumpid_one+0x2d0/0x2d0
[ 9.681796][ T12] ? __lock_release.isra.0+0x6b/0x1a0
[ 9.681911][ T12] cleanup_net+0x431/0x890
[ 9.682025][ T12] ? net_passive_dec+0x1c0/0x1c0
[ 9.682144][ T12] ? process_one_work+0xdb7/0x1410
[ 9.682266][ T12] ? lock_acquire+0x134/0x160
[ 9.682378][ T12] ? rcu_is_watching+0x15/0xd0
[ 9.682497][ T12] process_one_work+0xdf8/0x1410
[ 9.682616][ T12] ? pwq_dec_nr_in_flight+0x710/0x710
[ 9.682749][ T12] ? lock_acquire.part.0+0xbc/0x260
[ 9.682873][ T12] worker_thread+0x4f1/0xd60
[ 9.682993][ T12] ? rescuer_thread+0x1320/0x1320
[ 9.683108][ T12] kthread+0x367/0x460
[ 9.683193][ T12] ? trace_irq_enable.constprop.0+0x9b/0x180
[ 9.683342][ T12] ? kthread_affine_node+0x330/0x330
[ 9.683458][ T12] ret_from_fork+0x474/0x6b0
[ 9.683585][ T12] ? arch_exit_to_user_mode_prepare.isra.0+0x120/0x120
[ 9.683730][ T12] ? __switch_to+0x5a3/0xe00
[ 9.683848][ T12] ? kthread_affine_node+0x330/0x330
[ 9.683963][ T12] ret_from_fork_asm+0x11/0x20
[ 9.684093][ T12]
[ 9.684178][ T12] irq event stamp: 2885
[ 9.684270][ T12] hardirqs last enabled at (2895): [] __up_console_sem+0x5a/0x70
[ 9.684493][ T12] hardirqs last disabled at (2902): [] __up_console_sem+0x3f/0x70
[ 9.684686][ T12] softirqs last enabled at (2618): [] handle_softirqs+0x611/0x940
[ 9.684888][ T12] softirqs last disabled at (2611): [] __irq_exit_rcu+0x103/0x1c0
[ 9.685097][ T12] ---[ end trace 0000000000000000 ]---