[ 23.516682][ T321] eth3: renamed from tmp
[ 24.961057][ T329] eth2: renamed from tmp
[ 27.041229][ T339] eth0: renamed from tmp
[ 27.683456][ T342] br0: port 1(eth0) entered blocking state
[ 27.683871][ T342] br0: port 1(eth0) entered disabled state
[ 27.684575][ T342] eth0: entered allmulticast mode
[ 27.687055][ T342] eth0: entered promiscuous mode
[ 27.689121][ T342] br0: port 1(eth0) entered blocking state
[ 27.689557][ T342] br0: port 1(eth0) entered forwarding state
[ 28.579047][ T346] eth1: renamed from tmp
[ 29.208146][ T349] br0: port 2(eth1) entered blocking state
[ 29.208570][ T349] br0: port 2(eth1) entered disabled state
[ 29.208991][ T349] eth1: entered allmulticast mode
[ 29.211194][ T349] eth1: entered promiscuous mode
[ 29.212644][ T349] br0: port 2(eth1) entered blocking state
[ 29.213046][ T349] br0: port 2(eth1) entered forwarding state
[ 34.111178][ T70] ==================================================================
[ 34.111445][ T70] BUG: KASAN: slab-use-after-free in kobject_put+0xbb/0xd0
[ 34.111673][ T70] Read of size 1 at addr ffff8880082a16c4 by task kworker/u16:1/70
[ 34.111902][ T70]
[ 34.111986][ T70] CPU: 1 UID: 0 PID: 70 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 34.111991][ T70] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 34.111994][ T70] Workqueue: netns cleanup_net
[ 34.112001][ T70] Call Trace:
[ 34.112003][ T70]
[ 34.112006][ T70] dump_stack_lvl+0x82/0xc0
[ 34.112011][ T70] print_address_description.constprop.0+0x2c/0x3a0
[ 34.112017][ T70] ? kobject_put+0xbb/0xd0
[ 34.112021][ T70] print_report+0xb4/0x270
[ 34.112025][ T70] ? kobject_put+0xbb/0xd0
[ 34.112028][ T70] ? kasan_addr_to_slab+0x21/0x70
[ 34.112031][ T70] ? kobject_put+0xbb/0xd0
[ 34.112034][ T70] kasan_report+0xca/0x100
[ 34.112038][ T70] ? kobject_put+0xbb/0xd0
[ 34.112043][ T70] kobject_put+0xbb/0xd0
[ 34.112047][ T70] netdev_run_todo+0x5f0/0xc60
[ 34.112052][ T70] ? dev_ingress_queue_create+0x190/0x190
[ 34.112056][ T70] ? generic_xdp_install+0x410/0x410
[ 34.112059][ T70] ? net_generic+0xb1/0x1f0
[ 34.112067][ T70] ops_undo_list+0x714/0x890
[ 34.112072][ T70] ? rtnl_net_dumpid_one+0x270/0x270
[ 34.112076][ T70] ? cleanup_net+0x2d6/0x8b0
[ 34.112081][ T70] cleanup_net+0x3b2/0x8b0
[ 34.112086][ T70] ? net_passive_dec+0x190/0x190
[ 34.112090][ T70] ? rcu_is_watching+0x12/0xb0
[ 34.112097][ T70] process_one_work+0xe35/0x1650
[ 34.112106][ T70] ? pwq_dec_nr_in_flight+0x550/0x550
[ 34.112111][ T70] ? assign_work+0x168/0x240
[ 34.112115][ T70] worker_thread+0x591/0xcf0
[ 34.112121][ T70] ? rescuer_thread+0xd10/0xd10
[ 34.112125][ T70] kthread+0x37b/0x5f0
[ 34.112129][ T70] ? kthread_is_per_cpu+0xc0/0xc0
[ 34.112132][ T70] ? ret_from_fork+0x1b/0x270
[ 34.112136][ T70] ? __lock_release+0x5d/0x170
[ 34.112140][ T70] ? rcu_is_watching+0x12/0xb0
[ 34.112143][ T70] ? kthread_is_per_cpu+0xc0/0xc0
[ 34.112147][ T70] ret_from_fork+0x1db/0x270
[ 34.112149][ T70] ? kthread_is_per_cpu+0xc0/0xc0
[ 34.112152][ T70] ret_from_fork_asm+0x11/0x20
[ 34.112162][ T70]
[ 34.112163][ T70]
[ 34.118110][ T70] Allocated by task 264:
[ 34.118225][ T70] kasan_save_stack+0x24/0x40
[ 34.118385][ T70] kasan_save_track+0x14/0x30
[ 34.118539][ T70] __kasan_kmalloc+0x7b/0x90
[ 34.118694][ T70] __kvmalloc_node_noprof+0x2e5/0x8e0
[ 34.118852][ T70] alloc_netdev_mqs+0x7d/0x1370
[ 34.119012][ T70] ip6_tnl_init_net+0x102/0x3f0
[ 34.119169][ T70] ops_init+0x189/0x550
[ 34.119287][ T70] setup_net+0xf1/0x380
[ 34.119404][ T70] copy_net_ns+0x253/0x510
[ 34.119562][ T70] create_new_namespaces+0x35f/0x900
[ 34.119716][ T70] unshare_nsproxy_namespaces+0x8a/0x1a0
[ 34.119871][ T70] ksys_unshare+0x2be/0x6e0
[ 34.120026][ T70] __x64_sys_unshare+0x31/0x40
[ 34.120178][ T70] do_syscall_64+0xc1/0xfd0
[ 34.120331][ T70] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 34.120520][ T70]
[ 34.120597][ T70] Freed by task 70:
[ 34.120713][ T70] kasan_save_stack+0x24/0x40
[ 34.120870][ T70] kasan_save_track+0x14/0x30
[ 34.121026][ T70] __kasan_save_free_info+0x3b/0x60
[ 34.121180][ T70] __kasan_slab_free+0x3f/0x60
[ 34.121333][ T70] kfree+0x21d/0x540
[ 34.121449][ T70] device_release+0x9c/0x210
[ 34.121602][ T70] kobject_cleanup+0xfe/0x360
[ 34.121756][ T70] netdev_run_todo+0x81f/0xc60
[ 34.121911][ T70] ops_undo_list+0x714/0x890
[ 34.122068][ T70] cleanup_net+0x3b2/0x8b0
[ 34.122220][ T70] process_one_work+0xe35/0x1650
[ 34.122373][ T70] worker_thread+0x591/0xcf0
[ 34.122525][ T70] kthread+0x37b/0x5f0
[ 34.122649][ T70] ret_from_fork+0x1db/0x270
[ 34.122806][ T70] ret_from_fork_asm+0x11/0x20
[ 34.122962][ T70]
[ 34.123045][ T70] The buggy address belongs to the object at ffff8880082a1000
[ 34.123045][ T70] which belongs to the cache kmalloc-4k of size 4096
[ 34.123413][ T70] The buggy address is located 1732 bytes inside of
[ 34.123413][ T70] freed 4096-byte region [ffff8880082a1000, ffff8880082a2000)
[ 34.123782][ T70]
[ 34.123860][ T70] The buggy address belongs to the physical page:
[ 34.124053][ T70] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x82a0
[ 34.124327][ T70] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[ 34.124560][ T70] flags: 0x80000000000040(head|node=0|zone=1)
[ 34.124754][ T70] page_type: f5(slab)
[ 34.124875][ T70] raw: 0080000000000040 ffff888001043700 ffffea0000237810 ffffea0000213010
[ 34.125152][ T70] raw: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 34.125423][ T70] head: 0080000000000040 ffff888001043700 ffffea0000237810 ffffea0000213010
[ 34.125696][ T70] head: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 34.125966][ T70] head: 0080000000000003 ffffea000020a801 00000000ffffffff 00000000ffffffff
[ 34.126242][ T70] head: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
[ 34.126513][ T70] page dumped because: kasan: bad access detected
[ 34.126703][ T70]
[ 34.126780][ T70] Memory state around the buggy address:
[ 34.126931][ T70] ffff8880082a1580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 34.127157][ T70] ffff8880082a1600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 34.127383][ T70] >ffff8880082a1680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 34.127608][ T70] ^
[ 34.127794][ T70] ffff8880082a1700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 34.128019][ T70] ffff8880082a1780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 34.128328][ T70] ==================================================================
[ 34.128657][ T70] Disabling lock debugging due to kernel taint
[ 34.128933][ T70] ------------[ cut here ]------------
[ 34.129072][ T70] refcount_t: underflow; use-after-free.
[ 34.129242][ T70] WARNING: CPU: 1 PID: 70 at lib/refcount.c:28 refcount_warn_saturate+0x16f/0x1b0
[ 34.129661][ T70] Modules linked in:
[ 34.129847][ T70] CPU: 1 UID: 0 PID: 70 Comm: kworker/u16:1 Tainted: G B 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 34.130180][ T70] Tainted: [B]=BAD_PAGE
[ 34.130294][ T70] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 34.130477][ T70] Workqueue: netns cleanup_net
[ 34.130635][ T70] RIP: 0010:refcount_warn_saturate+0x16f/0x1b0
[ 34.130890][ T70] Code: cc 38 03 80 fb 01 0f 87 29 33 d7 fe 83 e3 01 0f 85 51 ff ff ff c6 05 17 cc 38 03 01 90 48 c7 c7 40 ba e5 83 e8 62 d6 16 ff 90 <0f> 0b 90 90 e9 33 ff ff ff 48 89 df e8 c0 9d a0 ff e9 ba fe ff ff
[ 34.131413][ T70] RSP: 0018:ffffc900004b7a08 EFLAGS: 00010282
[ 34.131598][ T70] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[ 34.131876][ T70] RDX: 0000000000000002 RSI: 0000000000000004 RDI: 0000000000000001
[ 34.132098][ T70] RBP: 0000000000000003 R08: 0000000000000000 R09: fffffbfff09c0934
[ 34.132317][ T70] R10: 0000000000000003 R11: ffffc900004b7580 R12: 0000000000000001
[ 34.132538][ T70] R13: dffffc0000000000 R14: dead000000000122 R15: dead000000000100
[ 34.132826][ T70] FS: 0000000000000000(0000) GS:ffff8880e6d88000(0000) knlGS:0000000000000000
[ 34.133089][ T70] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 34.133274][ T70] CR2: 00007fbd4a9c6000 CR3: 0000000036749003 CR4: 0000000000772ef0
[ 34.133494][ T70] PKRU: 55555554
[ 34.133604][ T70] Call Trace:
[ 34.133715][ T70]
[ 34.133958][ T70] netdev_run_todo+0x5f0/0xc60
[ 34.134115][ T70] ? dev_ingress_queue_create+0x190/0x190
[ 34.134262][ T70] ? generic_xdp_install+0x410/0x410
[ 34.134406][ T70] ? net_generic+0xb1/0x1f0
[ 34.134555][ T70] ops_undo_list+0x714/0x890
[ 34.134705][ T70] ? rtnl_net_dumpid_one+0x270/0x270
[ 34.134906][ T70] ? cleanup_net+0x2d6/0x8b0
[ 34.135059][ T70] cleanup_net+0x3b2/0x8b0
[ 34.135205][ T70] ? net_passive_dec+0x190/0x190
[ 34.135359][ T70] ? rcu_is_watching+0x12/0xb0
[ 34.135590][ T70] process_one_work+0xe35/0x1650
[ 34.135739][ T70] ? pwq_dec_nr_in_flight+0x550/0x550
[ 34.135943][ T70] ? assign_work+0x168/0x240
[ 34.136096][ T70] worker_thread+0x591/0xcf0
[ 34.136244][ T70] ? rescuer_thread+0xd10/0xd10
[ 34.136390][ T70] kthread+0x37b/0x5f0
[ 34.136587][ T70] ? kthread_is_per_cpu+0xc0/0xc0
[ 34.136736][ T70] ? ret_from_fork+0x1b/0x270
[ 34.136939][ T70] ? __lock_release+0x5d/0x170
[ 34.137089][ T70] ? rcu_is_watching+0x12/0xb0
[ 34.137236][ T70] ? kthread_is_per_cpu+0xc0/0xc0
[ 34.137382][ T70] ret_from_fork+0x1db/0x270
[ 34.137528][ T70] ? kthread_is_per_cpu+0xc0/0xc0
[ 34.137757][ T70] ret_from_fork_asm+0x11/0x20
[ 34.137965][ T70]
[ 34.138082][ T70] irq event stamp: 21655
[ 34.138194][ T70] hardirqs last enabled at (21655): [] finish_task_switch.isra.0+0x245/0x960
[ 34.138484][ T70] hardirqs last disabled at (21654): [] __schedule+0x94a/0x1b10
[ 34.138884][ T70] softirqs last enabled at (21544): [] handle_softirqs+0x352/0x610
[ 34.139140][ T70] softirqs last disabled at (21535): [] irq_exit_rcu+0xab/0x100
[ 34.139396][ T70] ---[ end trace 0000000000000000 ]---
[ 34.149557][ T70] br0: port 1(eth0) entered disabled state
[ 34.152939][ T70] eth0 (unregistering): left allmulticast mode
[ 34.153177][ T70] eth0 (unregistering): left promiscuous mode
[ 34.153405][ T70] br0: port 1(eth0) entered disabled state
[ 34.637838][ T70] eth1: left allmulticast mode
[ 34.638090][ T70] eth1: left promiscuous mode
[ 34.638366][ T70] br0: port 2(eth1) entered disabled state
[ 41.519152][ T451] eth3: renamed from tmp
[ 42.443038][ T459] eth2: renamed from tmp
[ 43.517002][ T469] eth0: renamed from tmp
[ 43.908625][ T473] br100: port 1(eth0) entered blocking state
[ 43.909205][ T473] br100: port 1(eth0) entered disabled state
[ 43.909455][ T473] eth0: entered allmulticast mode
[ 43.910566][ T473] eth0: entered promiscuous mode
[ 43.911379][ T473] br100: port 1(eth0) entered blocking state
[ 43.911593][ T473] br100: port 1(eth0) entered forwarding state
[ 44.307686][ T476] eth1: renamed from tmp
[ 44.709481][ T480] br100: port 2(eth1) entered blocking state
[ 44.709969][ T480] br100: port 2(eth1) entered disabled state
[ 44.710236][ T480] eth1: entered allmulticast mode
[ 44.711407][ T480] eth1: entered promiscuous mode
[ 44.712132][ T480] br100: port 2(eth1) entered blocking state
[ 44.712382][ T480] br100: port 2(eth1) entered forwarding state
[ 49.232917][ T70] br100: port 1(eth0) entered disabled state
[ 49.245216][ T70] eth0 (unregistering): left allmulticast mode
[ 49.245552][ T70] eth0 (unregistering): left promiscuous mode
[ 49.246085][ T70] br100: port 1(eth0) entered disabled state
[ 49.756138][ T70] eth1: left allmulticast mode
[ 49.756347][ T70] eth1: left promiscuous mode
[ 49.756724][ T70] br100: port 2(eth1) entered disabled state
[ 55.310564][ T569] eth1: renamed from tmp
[ 56.092103][ T575] eth2: renamed from tmp
[ 63.322832][ T629] eth1tag: renamed from eth1 (while UP)
[ 63.599173][ T634] eth1: renamed from eth1tag (while UP)
[ 65.750938][ T676] eth1tag: renamed from eth1 (while UP)
[ 66.040533][ T681] eth1: renamed from eth1tag (while UP)
[ 68.163818][ T723] eth1tag: renamed from eth1 (while UP)
[ 68.423845][ T728] eth1: renamed from eth1tag (while UP)
[ 70.461069][ T770] eth1tag: renamed from eth1 (while UP)
[ 70.745274][ T775] eth1: renamed from eth1tag (while UP)
[ 76.894844][ T859] eth1: renamed from tmp
[ 78.148264][ T869] eth2: renamed from tmp
[ 89.240895][ T956] eth1: renamed from tmp
[ 90.385928][ T967] eth2: renamed from tmp
[ 101.577189][ T1060] eth1: renamed from tmp
[ 102.368098][ T1066] eth2: renamed from tmp
[ 109.627051][ T1122] eth1tag: renamed from eth1 (while UP)
[ 109.906165][ T1127] eth1: renamed from eth1tag (while UP)
[ 112.032356][ T1171] eth1tag: renamed from eth1 (while UP)
[ 112.292486][ T1176] eth1: renamed from eth1tag (while UP)
[ 114.480595][ T1220] eth1tag: renamed from eth1 (while UP)
[ 114.750310][ T1225] eth1: renamed from eth1tag (while UP)
[ 116.944905][ T1269] eth1tag: renamed from eth1 (while UP)
[ 117.209172][ T1274] eth1: renamed from eth1tag (while UP)