[ 18.719650][ T301] 8021q: 802.1Q VLAN Support v1.8
[ 23.374497][ T345] br1: port 1(vx100) entered blocking state
[ 23.376132][ T345] br1: port 1(vx100) entered disabled state
[ 23.377004][ T345] vx100: entered allmulticast mode
[ 23.383527][ T345] vx100: entered promiscuous mode
[ 23.385136][ T345] br1: port 1(vx100) entered blocking state
[ 23.385956][ T345] br1: port 1(vx100) entered forwarding state
[ 23.643676][ T347] br1: port 2(veth1) entered blocking state
[ 23.644169][ T347] br1: port 2(veth1) entered disabled state
[ 23.644617][ T347] veth1: entered allmulticast mode
[ 23.648278][ T347] veth1: entered promiscuous mode
[ 23.764740][ T46] br1: port 2(veth1) entered blocking state
[ 23.765490][ T46] br1: port 2(veth1) entered forwarding state
[ 23.979192][ T350] br1: port 3(veth2) entered blocking state
[ 23.979754][ T350] br1: port 3(veth2) entered disabled state
[ 23.980255][ T350] veth2: entered allmulticast mode
[ 23.983754][ T350] veth2: entered promiscuous mode
[ 24.095527][ T38] br1: port 3(veth2) entered blocking state
[ 24.095978][ T38] br1: port 3(veth2) entered forwarding state
[ 28.903885][ T397] br2: port 1(w1) entered blocking state
[ 28.904590][ T397] br2: port 1(w1) entered disabled state
[ 28.905030][ T397] w1: entered allmulticast mode
[ 28.908760][ T397] w1: entered promiscuous mode
[ 29.762165][ T404] br2: port 2(vx100) entered blocking state
[ 29.762645][ T404] br2: port 2(vx100) entered disabled state
[ 29.763147][ T404] vx100: entered allmulticast mode
[ 29.766644][ T404] vx100: entered promiscuous mode
[ 29.767539][ T404] br2: port 2(vx100) entered blocking state
[ 29.767972][ T404] br2: port 2(vx100) entered forwarding state
[ 30.846809][ T71] br2: port 1(w1) entered blocking state
[ 30.847419][ T71] br2: port 1(w1) entered forwarding state
[ 34.212525][ T444] br2: port 1(w1) entered blocking state
[ 34.212898][ T444] br2: port 1(w1) entered disabled state
[ 34.213542][ T444] w1: entered allmulticast mode
[ 34.216861][ T444] w1: entered promiscuous mode
[ 35.024625][ T451] br2: port 2(vx100) entered blocking state
[ 35.025078][ T451] br2: port 2(vx100) entered disabled state
[ 35.025515][ T451] vx100: entered allmulticast mode
[ 35.029338][ T451] vx100: entered promiscuous mode
[ 35.030166][ T451] br2: port 2(vx100) entered blocking state
[ 35.030581][ T451] br2: port 2(vx100) entered forwarding state
[ 36.003908][ T46] br2: port 1(w1) entered blocking state
[ 36.004335][ T46] br2: port 1(w1) entered forwarding state
[ 39.670541][ T509] ip (509) used greatest stack depth: 23216 bytes left
[ 49.803729][ T12] vx100: left allmulticast mode
[ 49.804186][ T12] vx100: left promiscuous mode
[ 49.804724][ T12] br2: port 2(vx100) entered disabled state
[ 49.810961][ T12] w1: left allmulticast mode
[ 49.811376][ T12] w1: left promiscuous mode
[ 49.811999][ T12] br2: port 1(w1) entered disabled state
[ 49.883270][ T12] ==================================================================
[ 49.883591][ T12] BUG: KASAN: slab-use-after-free in kobject_put+0xbb/0xd0
[ 49.883868][ T12] Read of size 1 at addr ffff88800a2146ac by task kworker/u16:0/12
[ 49.884131][ T12]
[ 49.884232][ T12] CPU: 1 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 49.884237][ T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 49.884242][ T12] Workqueue: netns cleanup_net
[ 49.884251][ T12] Call Trace:
[ 49.884254][ T12]
[ 49.884257][ T12] dump_stack_lvl+0x82/0xc0
[ 49.884263][ T12] print_address_description.constprop.0+0x2c/0x3a0
[ 49.884270][ T12] ? kobject_put+0xbb/0xd0
[ 49.884274][ T12] print_report+0xb4/0x270
[ 49.884277][ T12] ? kobject_put+0xbb/0xd0
[ 49.884280][ T12] ? kasan_addr_to_slab+0x21/0x70
[ 49.884283][ T12] ? kobject_put+0xbb/0xd0
[ 49.884287][ T12] kasan_report+0xca/0x100
[ 49.884290][ T12] ? kobject_put+0xbb/0xd0
[ 49.884296][ T12] kobject_put+0xbb/0xd0
[ 49.884299][ T12] netdev_run_todo+0x5f0/0xc60
[ 49.884308][ T12] ? rtnl_is_locked+0x15/0x20
[ 49.884313][ T12] ? dev_ingress_queue_create+0x190/0x190
[ 49.884316][ T12] ? generic_xdp_install+0x410/0x410
[ 49.884323][ T12] ops_undo_list+0x714/0x890
[ 49.884328][ T12] ? netns_get+0x110/0x110
[ 49.884331][ T12] ? cleanup_net+0x2d6/0x830
[ 49.884336][ T12] cleanup_net+0x3b2/0x830
[ 49.884340][ T12] ? net_passive_dec+0x190/0x190
[ 49.884344][ T12] ? rcu_is_watching+0x12/0xb0
[ 49.884356][ T12] process_one_work+0xe35/0x1650
[ 49.884366][ T12] ? pwq_dec_nr_in_flight+0x550/0x550
[ 49.884371][ T12] ? assign_work+0x168/0x240
[ 49.884375][ T12] worker_thread+0x591/0xcf0
[ 49.884381][ T12] ? rescuer_thread+0xd10/0xd10
[ 49.884384][ T12] kthread+0x37b/0x5f0
[ 49.884389][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 49.884392][ T12] ? ret_from_fork+0x1b/0x270
[ 49.884396][ T12] ? __lock_release+0x5d/0x170
[ 49.884403][ T12] ? rcu_is_watching+0x12/0xb0
[ 49.884406][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 49.884410][ T12] ret_from_fork+0x1db/0x270
[ 49.884412][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 49.884415][ T12] ret_from_fork_asm+0x11/0x20
[ 49.884424][ T12]
[ 49.884425][ T12]
[ 49.891287][ T12] Allocated by task 423:
[ 49.891419][ T12] kasan_save_stack+0x24/0x40
[ 49.891599][ T12] kasan_save_track+0x14/0x30
[ 49.891773][ T12] __kasan_kmalloc+0x7b/0x90
[ 49.891943][ T12] __kvmalloc_node_noprof+0x2e5/0x8e0
[ 49.892118][ T12] alloc_netdev_mqs+0x7d/0x1370
[ 49.892294][ T12] sit_init_net+0x169/0x550
[ 49.892472][ T12] ops_init+0x189/0x550
[ 49.892603][ T12] setup_net+0xf1/0x380
[ 49.892732][ T12] copy_net_ns+0x21a/0x380
[ 49.892904][ T12] create_new_namespaces+0x35f/0x900
[ 49.893092][ T12] unshare_nsproxy_namespaces+0x89/0x120
[ 49.893263][ T12] ksys_unshare+0x2a3/0x660
[ 49.893431][ T12] __x64_sys_unshare+0x31/0x40
[ 49.893600][ T12] do_syscall_64+0xc1/0xfd0
[ 49.893771][ T12] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 49.893982][ T12]
[ 49.894073][ T12] Freed by task 12:
[ 49.894204][ T12] kasan_save_stack+0x24/0x40
[ 49.894383][ T12] kasan_save_track+0x14/0x30
[ 49.894553][ T12] __kasan_save_free_info+0x3b/0x60
[ 49.894725][ T12] __kasan_slab_free+0x3f/0x60
[ 49.894895][ T12] kfree+0x21d/0x540
[ 49.895022][ T12] device_release+0x9c/0x210
[ 49.895199][ T12] kobject_cleanup+0xfe/0x360
[ 49.895368][ T12] netdev_run_todo+0x81f/0xc60
[ 49.895539][ T12] ops_undo_list+0x714/0x890
[ 49.895715][ T12] cleanup_net+0x3b2/0x830
[ 49.895886][ T12] process_one_work+0xe35/0x1650
[ 49.896068][ T12] worker_thread+0x591/0xcf0
[ 49.896238][ T12] kthread+0x37b/0x5f0
[ 49.896367][ T12] ret_from_fork+0x1db/0x270
[ 49.896535][ T12] ret_from_fork_asm+0x11/0x20
[ 49.896708][ T12]
[ 49.896800][ T12] The buggy address belongs to the object at ffff88800a214000
[ 49.896800][ T12] which belongs to the cache kmalloc-4k of size 4096
[ 49.897247][ T12] The buggy address is located 1708 bytes inside of
[ 49.897247][ T12] freed 4096-byte region [ffff88800a214000, ffff88800a215000)
[ 49.897660][ T12]
[ 49.897747][ T12] The buggy address belongs to the physical page:
[ 49.897960][ T12] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xa210
[ 49.898285][ T12] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[ 49.898546][ T12] flags: 0x80000000000040(head|node=0|zone=1)
[ 49.898761][ T12] page_type: f5(slab)
[ 49.898898][ T12] raw: 0080000000000040 ffff888001043700 ffffea00002ab810 ffffea000043f810
[ 49.899200][ T12] raw: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 49.899514][ T12] head: 0080000000000040 ffff888001043700 ffffea00002ab810 ffffea000043f810
[ 49.899814][ T12] head: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 49.900117][ T12] head: 0080000000000003 ffffea0000288401 00000000ffffffff 00000000ffffffff
[ 49.900415][ T12] head: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
[ 49.900720][ T12] page dumped because: kasan: bad access detected
[ 49.900934][ T12]
[ 49.901019][ T12] Memory state around the buggy address:
[ 49.901193][ T12] ffff88800a214580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 49.901449][ T12] ffff88800a214600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 49.901703][ T12] >ffff88800a214680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 49.901955][ T12] ^
[ 49.902217][ T12] ffff88800a214700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 49.902460][ T12] ffff88800a214780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 49.902704][ T12] ==================================================================
[ 49.903159][ T12] Disabling lock debugging due to kernel taint
[ 49.903462][ T12] ------------[ cut here ]------------
[ 49.903667][ T12] refcount_t: underflow; use-after-free.
[ 49.903907][ T12] WARNING: CPU: 2 PID: 12 at lib/refcount.c:28 refcount_warn_saturate+0x16f/0x1b0
[ 49.904264][ T12] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel bridge stp llc 8021q sch_ingress vrf veth
[ 49.904670][ T12] CPU: 2 UID: 0 PID: 12 Comm: kworker/u16:0 Tainted: G B 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 49.905119][ T12] Tainted: [B]=BAD_PAGE
[ 49.905272][ T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 49.905513][ T12] Workqueue: netns cleanup_net
[ 49.905727][ T12] RIP: 0010:refcount_warn_saturate+0x16f/0x1b0
[ 49.905992][ T12] Code: 7d 93 02 80 fb 01 0f 87 bb 99 d9 fe 83 e3 01 0f 85 51 ff ff ff c6 05 a8 7d 93 02 01 90 48 c7 c7 60 8d 45 bb e8 32 bf 18 ff 90 <0f> 0b 90 90 e9 33 ff ff ff 48 89 df e8 b0 63 a1 ff e9 ba fe ff ff
[ 49.906631][ T12] RSP: 0018:ffffc900000c7a08 EFLAGS: 00010282
[ 49.906875][ T12] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[ 49.907193][ T12] RDX: 0000000000000002 RSI: 0000000000000004 RDI: 0000000000000001
[ 49.907484][ T12] RBP: 0000000000000003 R08: 0000000000000000 R09: fffffbfff77be134
[ 49.907774][ T12] R10: 0000000000000003 R11: ffffc900000c7580 R12: 0000000000000001
[ 49.908068][ T12] R13: dffffc0000000000 R14: dead000000000122 R15: dead000000000100
[ 49.908351][ T12] FS: 0000000000000000(0000) GS:ffff8880790f2000(0000) knlGS:0000000000000000
[ 49.908687][ T12] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 49.908929][ T12] CR2: 00007f47802164c6 CR3: 000000000a19d001 CR4: 0000000000772ef0
[ 49.909305][ T12] PKRU: 55555554
[ 49.909459][ T12] Call Trace:
[ 49.909617][ T12]
[ 49.909751][ T12] netdev_run_todo+0x5f0/0xc60
[ 49.909962][ T12] ? rtnl_is_locked+0x15/0x20
[ 49.910175][ T12] ? dev_ingress_queue_create+0x190/0x190
[ 49.910382][ T12] ? generic_xdp_install+0x410/0x410
[ 49.910576][ T12] ops_undo_list+0x714/0x890
[ 49.910784][ T12] ? netns_get+0x110/0x110
[ 49.910975][ T12] ? cleanup_net+0x2d6/0x830
[ 49.911184][ T12] cleanup_net+0x3b2/0x830
[ 49.911377][ T12] ? net_passive_dec+0x190/0x190
[ 49.911567][ T12] ? rcu_is_watching+0x12/0xb0
[ 49.911776][ T12] process_one_work+0xe35/0x1650
[ 49.911979][ T12] ? pwq_dec_nr_in_flight+0x550/0x550
[ 49.912182][ T12] ? assign_work+0x168/0x240
[ 49.912374][ T12] worker_thread+0x591/0xcf0
[ 49.912650][ T12] ? rescuer_thread+0xd10/0xd10
[ 49.912855][ T12] kthread+0x37b/0x5f0
[ 49.913014][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 49.913208][ T12] ? ret_from_fork+0x1b/0x270
[ 49.913409][ T12] ? __lock_release+0x5d/0x170
[ 49.913607][ T12] ? rcu_is_watching+0x12/0xb0
[ 49.913812][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 49.914014][ T12] ret_from_fork+0x1db/0x270
[ 49.914215][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 49.914410][ T12] ret_from_fork_asm+0x11/0x20
[ 49.914608][ T12]
[ 49.914771][ T12] irq event stamp: 59831
[ 49.914927][ T12] hardirqs last enabled at (59831): [] finish_task_switch.isra.0+0x245/0x960
[ 49.915384][ T12] hardirqs last disabled at (59830): [] __schedule+0x94a/0x1b10
[ 49.915709][ T12] softirqs last enabled at (58678): [] br_multicast_dev_del+0x15e/0x240 [bridge]
[ 49.916109][ T12] softirqs last disabled at (58676): [] br_multicast_dev_del+0x7e/0x240 [bridge]
[ 49.916497][ T12] ---[ end trace 0000000000000000 ]---
[ 50.132809][ T12] vx100: left allmulticast mode
[ 50.133667][ T12] vx100: left promiscuous mode
[ 50.134297][ T12] br2: port 2(vx100) entered disabled state
[ 50.136650][ T12] w1: left allmulticast mode
[ 50.136973][ T12] w1: left promiscuous mode
[ 50.139151][ T12] br2: port 1(w1) entered disabled state
[ 51.786386][ T574] br1: port 3(veth2) entered disabled state
[ 51.890787][ T575] veth2: left allmulticast mode
[ 51.891053][ T575] veth2: left promiscuous mode
[ 51.891376][ T575] br1: port 3(veth2) entered disabled state
[ 52.028565][ T577] br1: port 2(veth1) entered disabled state
[ 52.088828][ T578] veth1: left allmulticast mode
[ 52.089068][ T578] veth1: left promiscuous mode
[ 52.089398][ T578] br1: port 2(veth1) entered disabled state
[ 52.170314][ T579] vx100: left allmulticast mode
[ 52.170571][ T579] vx100: left promiscuous mode
[ 52.170875][ T579] br1: port 1(vx100) entered disabled state