[ 8.510974][ T174] ------------[ cut here ]------------
[ 8.511163][ T174] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#0: ip/174
[ 8.511396][ T174] Modules linked in:
[ 8.511525][ T174] CPU: 0 UID: 0 PID: 174 Comm: ip Tainted: G W 7.1.0-rc4-virtme #1 PREEMPT(full)
[ 8.511842][ T174] Tainted: [W]=WARN
[ 8.511937][ T174] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8.512093][ T174] RIP: 0010:rtmsg_ifinfo_build_skb+0x1a6/0x250
[ 8.512258][ 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
[ 8.512700][ T174] RSP: 0018:ffa0000000817aa8 EFLAGS: 00010286
[ 8.512862][ T174] RAX: 00000000ffffffa6 RBX: ff11000009ded0c0 RCX: 1ff4000000102f1b
[ 8.513049][ T174] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff11000009ded170
[ 8.513236][ T174] RBP: ff11000005b8c000 R08: 1fe22000013bda2f R09: ff1100001369d180
[ 8.513424][ T174] R10: 0000000000000000 R11: 0000000000000001 R12: 00000000ffffffff
[ 8.513612][ T174] R13: 0000000000000000 R14: 0000000000000000 R15: ff11000005b8c000
[ 8.513801][ T174] FS: 00007f0bdee1f840(0000) GS:ff11000091f79000(0000) knlGS:0000000000000000
[ 8.514029][ T174] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8.514186][ T174] CR2: 0000000000479648 CR3: 000000000a698005 CR4: 0000000000771ef0
[ 8.514373][ T174] PKRU: 55555554
[ 8.514471][ T174] Call Trace:
[ 8.514566][ T174]
[ 8.514633][ T174] ? ip6_route_dev_notify+0x250/0x380
[ 8.514763][ T174] rtmsg_ifinfo_event.part.0+0x2c/0x130
[ 8.514894][ T174] ? notifier_call_chain+0xb0/0x320
[ 8.515020][ T174] rtmsg_ifinfo+0x5c/0xb0
[ 8.515115][ T174] register_netdevice+0x1526/0x1bc0
[ 8.515241][ T174] ? unregister_netdevice_queue+0x470/0x470
[ 8.515400][ T174] ? alloc_netdev_mqs+0xeda/0x1430
[ 8.515528][ T174] register_netdev+0x23/0x40
[ 8.515653][ T174] loopback_net_init+0x7d/0x150
[ 8.515803][ T174] ops_init+0x187/0x560
[ 8.515905][ T174] setup_net+0x11b/0x3b0
[ 8.516000][ T174] ? unregister_pernet_device+0x80/0x80
[ 8.516124][ T174] ? lockdep_init_map_type+0x5d/0x250
[ 8.516249][ T174] ? mutex_init_lockdep+0xf6/0x120
[ 8.516375][ T174] copy_net_ns+0x2fd/0x450
[ 8.516506][ T174] create_new_namespaces+0x371/0xa10
[ 8.516635][ T174] unshare_nsproxy_namespaces+0xa5/0x150
[ 8.516759][ T174] ksys_unshare+0x47e/0x8c0
[ 8.516888][ T174] ? walk_process_tree+0x350/0x350
[ 8.517013][ T174] ? __ia32_sys_open+0x1b0/0x1b0
[ 8.517140][ T174] __x64_sys_unshare+0x34/0x50
[ 8.517263][ T174] ? do_syscall_64+0x82/0xfc0
[ 8.517393][ T174] do_syscall_64+0x117/0xfc0
[ 8.517517][ T174] ? trace_hardirqs_off+0xd/0x30
[ 8.517642][ T174] ? exc_page_fault+0xee/0x100
[ 8.517766][ T174] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 8.517926][ T174] RIP: 0033:0x7f0bdf0e1bcb
[ 8.518057][ 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
[ 8.518510][ T174] RSP: 002b:00007fffc1a47cc8 EFLAGS: 00000202 ORIG_RAX: 0000000000000110
[ 8.518701][ T174] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f0bdf0e1bcb
[ 8.518893][ T174] RDX: 0000000000000000 RSI: 0000000000477309 RDI: 0000000040000000
[ 8.519082][ T174] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
[ 8.519269][ T174] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffc1a49ef0
[ 8.519457][ T174] R13: 0000000000000001 R14: 00007f0bdee1f6f8 R15: 00007fffc1a4b86a
[ 8.519647][ T174]
[ 8.519740][ T174] irq event stamp: 18803
[ 8.519839][ T174] hardirqs last enabled at (18813): [] __up_console_sem+0x5a/0x70
[ 8.520058][ T174] hardirqs last disabled at (18820): [] __up_console_sem+0x3f/0x70
[ 8.520272][ T174] softirqs last enabled at (18298): [] __alloc_skb+0x4c5/0x5f0
[ 8.520490][ T174] softirqs last disabled at (18296): [] __alloc_skb+0x4c5/0x5f0
[ 8.520704][ T174] ---[ end trace 0000000000000000 ]---
[ 8.643892][ T173] ------------[ cut here ]------------
[ 8.644155][ T173] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#2: python3/173
[ 8.644570][ T173] Modules linked in: netdevsim
[ 8.644830][ T173] CPU: 2 UID: 0 PID: 173 Comm: python3 Tainted: G W 7.1.0-rc4-virtme #1 PREEMPT(full)
[ 8.645237][ T173] Tainted: [W]=WARN
[ 8.645411][ T173] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8.645659][ T173] RIP: 0010:rtmsg_ifinfo_build_skb+0x1a6/0x250
[ 8.645953][ 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
[ 8.646554][ T173] RSP: 0018:ffa0000000797500 EFLAGS: 00010286
[ 8.646799][ T173] RAX: 00000000ffffffa6 RBX: ff1100000b5a56c0 RCX: 1ff40000000f2e66
[ 8.647091][ T173] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff1100000b5a5770
[ 8.647372][ T173] RBP: ff1100000b522000 R08: 1fe22000016b4aef R09: ff1100001369af48
[ 8.647661][ T173] R10: 0000000000000002 R11: 0000000000000001 R12: 00000000ffffffff
[ 8.647953][ T173] R13: 0000000000000000 R14: 0000000000000000 R15: ff1100000b522000
[ 8.648237][ T173] FS: 00007f8e763b6400(0000) GS:ff11000092079000(0000) knlGS:0000000000000000
[ 8.648563][ T173] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8.648806][ T173] CR2: 000055b748c41140 CR3: 0000000005096003 CR4: 0000000000771ef0
[ 8.649102][ T173] PKRU: 55555554
[ 8.649266][ T173] Call Trace:
[ 8.649435][ T173]
[ 8.649563][ T173] rtmsg_ifinfo_event.part.0+0x2c/0x130
[ 8.649769][ T173] rtmsg_ifinfo+0x5c/0xb0
[ 8.649945][ T173] register_netdevice+0x1526/0x1bc0
[ 8.650150][ T173] ? unregister_netdevice_queue+0x470/0x470
[ 8.650387][ T173] ? __debugfs_create_file+0x2cf/0x3c0
[ 8.650604][ T173] nsim_init_netdevsim+0x80e/0xcb0 [netdevsim]
[ 8.650865][ T173] nsim_create+0x45b/0x5b0 [netdevsim]
[ 8.651070][ T173] __nsim_dev_port_add+0x30b/0x7a0 [netdevsim]
[ 8.651313][ T173] ? add_timer_on+0x580/0x580
[ 8.651524][ T173] ? nsim_dev_get_vfs+0x90/0x90 [netdevsim]
[ 8.651766][ T173] ? is_module_address+0x68/0x110
[ 8.651982][ T173] ? static_obj+0x5d/0x90
[ 8.652147][ T173] ? mark_held_locks+0x40/0x70
[ 8.652352][ T173] ? nsim_dev_hwstats_init+0x3a4/0x4d0 [netdevsim]
[ 8.652598][ T173] nsim_drv_probe+0x59e/0x8d0 [netdevsim]
[ 8.652859][ T173] call_driver_probe+0x61/0x1c0
[ 8.653066][ T173] really_probe+0x199/0x760
[ 8.653271][ T173] ? driver_probe_device+0x130/0x130
[ 8.653476][ T173] __driver_probe_device+0x1dc/0x430
[ 8.653681][ T173] driver_probe_device+0x4a/0x130
[ 8.653898][ T173] __device_attach_driver+0x16d/0x2a0
[ 8.654111][ T173] bus_for_each_drv+0x135/0x1e0
[ 8.654313][ T173] ? bus_find_device_reverse+0x1c0/0x1c0
[ 8.654520][ T173] __device_attach+0x1a6/0x410
[ 8.654721][ T173] ? __rwlock_init+0x150/0x150
[ 8.654936][ T173] ? __driver_attach_async_helper+0x2a0/0x2a0
[ 8.655177][ T173] ? do_raw_spin_unlock+0x59/0x250
[ 8.655380][ T173] ? _raw_spin_unlock+0x2d/0x50
[ 8.655598][ T173] device_initial_probe+0x8b/0xc0
[ 8.655803][ T173] bus_probe_device+0x63/0x160
[ 8.656022][ T173] device_add+0xb16/0x1130
[ 8.656227][ T173] ? __fw_devlink_link_to_consumers.isra.0+0x2d0/0x2d0
[ 8.656475][ T173] ? __init_waitqueue_head+0xcb/0x160
[ 8.656678][ T173] ? pm_runtime_init+0x323/0x3f0
[ 8.656895][ T173] new_device_store+0x3d4/0x730 [netdevsim]
[ 8.657144][ T173] ? __lock_release.isra.0+0x6b/0x1a0
[ 8.657345][ T173] ? new_port_store+0x1a0/0x1a0 [netdevsim]
[ 8.657594][ T173] ? sysfs_file_kobj+0xb3/0x1e0
[ 8.657798][ T173] ? sysfs_file_kobj+0xbd/0x1e0
[ 8.658013][ T173] ? sysfs_file_ops+0x140/0x140
[ 8.658214][ T173] kernfs_fop_write_iter+0x335/0x510
[ 8.658421][ T173] ? kernfs_ops+0xf0/0xf0
[ 8.658603][ T173] new_sync_write+0x333/0x750
[ 8.658822][ T173] ? __lock_acquire+0x508/0xc10
[ 8.659024][ T173] ? new_sync_read+0x740/0x740
[ 8.659230][ T173] ? lock_acquire.part.0+0xbc/0x260
[ 8.659437][ T173] ? ksys_write+0x116/0x250
[ 8.659645][ T173] vfs_write+0x6a4/0xc10
[ 8.659824][ T173] ksys_write+0x116/0x250
[ 8.659987][ T173] ? __ia32_sys_read+0xc0/0xc0
[ 8.660194][ T173] ? kernfs_fop_llseek+0x160/0x1f0
[ 8.660402][ T173] ? rcu_is_watching+0x15/0xd0
[ 8.660609][ T173] do_syscall_64+0x117/0xfc0
[ 8.660824][ T173] ? trace_hardirqs_off+0xd/0x30
[ 8.661028][ T173] ? exc_page_fault+0xee/0x100
[ 8.661235][ T173] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 8.661477][ T173] RIP: 0033:0x7f8e7653e08e
[ 8.661686][ 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
[ 8.662295][ T173] RSP: 002b:00007ffedfdee670 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 8.662583][ T173] RAX: ffffffffffffffda RBX: 0000000000000009 RCX: 00007f8e7653e08e
[ 8.662874][ T173] RDX: 0000000000000009 RSI: 000055c07648f640 RDI: 0000000000000006
[ 8.663149][ T173] RBP: 00007ffedfdee680 R08: 0000000000000000 R09: 0000000000000000
[ 8.663432][ T173] R10: 0000000000000000 R11: 0000000000000202 R12: 00007f8e763b6390
[ 8.663716][ T173] R13: 000055c07648f640 R14: 0000000000000006 R15: 00007f8e763450d0
[ 8.664017][ T173]
[ 8.664182][ T173] irq event stamp: 329805
[ 8.664343][ T173] hardirqs last enabled at (329815): [] __up_console_sem+0x5a/0x70
[ 8.664666][ T173] hardirqs last disabled at (329824): [] __up_console_sem+0x3f/0x70
[ 8.664999][ T173] softirqs last enabled at (328974): [] handle_softirqs+0x611/0x940
[ 8.665320][ T173] softirqs last disabled at (328937): [] __irq_exit_rcu+0x103/0x1c0
[ 8.665646][ T173] ---[ end trace 0000000000000000 ]---
[ 9.165574][ T12] ------------[ cut here ]------------
[ 9.165763][ T12] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#3: kworker/u16:0/12
[ 9.166091][ T12] Modules linked in: netdevsim
[ 9.166243][ T12] CPU: 3 UID: 0 PID: 12 Comm: kworker/u16:0 Tainted: G W 7.1.0-rc4-virtme #1 PREEMPT(full)
[ 9.166520][ T12] Tainted: [W]=WARN
[ 9.166614][ T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9.166758][ T12] Workqueue: netns cleanup_net
[ 9.166929][ T12] RIP: 0010:rtmsg_ifinfo_build_skb+0x1a6/0x250
[ 9.167082][ 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
[ 9.167493][ T12] RSP: 0018:ffa00000000c7878 EFLAGS: 00010286
[ 9.167637][ T12] RAX: 00000000ffffffa6 RBX: ff1100000974a1c0 RCX: 1ff4000000018ed5
[ 9.167815][ T12] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff1100000974a270
[ 9.167984][ T12] RBP: ff11000005b8c000 R08: 1fe22000012e944f R09: ff11000001b051d0
[ 9.168153][ T12] R10: 0000000000000003 R11: 0000000000000001 R12: 00000000ffffffff
[ 9.168336][ T12] R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000
[ 9.168518][ T12] FS: 0000000000000000(0000) GS:ff110000920f9000(0000) knlGS:0000000000000000
[ 9.168717][ T12] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9.168871][ T12] CR2: 00007f6c97a8aab0 CR3: 00000000149e6006 CR4: 0000000000771ef0
[ 9.169046][ T12] PKRU: 55555554
[ 9.169131][ T12] Call Trace:
[ 9.169221][ T12]
[ 9.169281][ T12] unregister_netdevice_many_notify+0xce3/0x1b30
[ 9.169432][ T12] ? unregister_netdevice_queued+0x80/0x80
[ 9.169584][ T12] ? perf_trace_sched_switch+0x7d0/0x7d0
[ 9.169701][ T12] default_device_exit_batch+0x38b/0x600
[ 9.169821][ T12] ? unregister_netdev+0x60/0x60
[ 9.169944][ T12] ? perf_trace_sched_switch+0x7d0/0x7d0
[ 9.170060][ T12] ops_undo_list+0x2ce/0x8f0
[ 9.170176][ T12] ? rtnl_net_dumpid_one+0x2d0/0x2d0
[ 9.170289][ T12] ? __lock_release.isra.0+0x6b/0x1a0
[ 9.170412][ T12] cleanup_net+0x431/0x890
[ 9.170525][ T12] ? net_passive_dec+0x1c0/0x1c0
[ 9.170638][ T12] ? process_one_work+0xdb7/0x1410
[ 9.170753][ T12] ? lock_acquire+0x134/0x160
[ 9.170872][ T12] ? rcu_is_watching+0x15/0xd0
[ 9.170989][ T12] process_one_work+0xdf8/0x1410
[ 9.171104][ T12] ? pwq_dec_nr_in_flight+0x710/0x710
[ 9.171221][ T12] ? lock_acquire.part.0+0xbc/0x260
[ 9.171338][ T12] worker_thread+0x4f1/0xd60
[ 9.171459][ T12] ? rescuer_thread+0x1320/0x1320
[ 9.171572][ T12] kthread+0x367/0x460
[ 9.171662][ T12] ? trace_irq_enable.constprop.0+0x9b/0x180
[ 9.171805][ T12] ? kthread_affine_node+0x330/0x330
[ 9.171957][ T12] ret_from_fork+0x474/0x6b0
[ 9.172072][ T12] ? arch_exit_to_user_mode_prepare.isra.0+0x120/0x120
[ 9.172213][ T12] ? __switch_to+0x5a3/0xe00
[ 9.172326][ T12] ? kthread_affine_node+0x330/0x330
[ 9.172443][ T12] ret_from_fork_asm+0x11/0x20
[ 9.172564][ T12]
[ 9.172650][ T12] irq event stamp: 2291
[ 9.172735][ T12] hardirqs last enabled at (2299): [] __up_console_sem+0x5a/0x70
[ 9.172938][ T12] hardirqs last disabled at (2308): [] __up_console_sem+0x3f/0x70
[ 9.173133][ T12] softirqs last enabled at (2166): [] handle_softirqs+0x611/0x940
[ 9.173329][ T12] softirqs last disabled at (2161): [] __irq_exit_rcu+0x103/0x1c0
[ 9.173530][ T12] ---[ end trace 0000000000000000 ]---