[ 14.528052][ T252] ip (252) used greatest stack depth: 23872 bytes left
[ 18.421091][ T303] 8021q: 802.1Q VLAN Support v1.8
[ 23.295879][ T348] br1: port 1(vx100) entered blocking state
[ 23.296542][ T348] br1: port 1(vx100) entered disabled state
[ 23.297422][ T348] vx100: entered allmulticast mode
[ 23.301071][ T348] vx100: entered promiscuous mode
[ 23.302464][ T348] br1: port 1(vx100) entered blocking state
[ 23.302962][ T348] br1: port 1(vx100) entered forwarding state
[ 23.527137][ T350] br1: port 2(veth1) entered blocking state
[ 23.527686][ T350] br1: port 2(veth1) entered disabled state
[ 23.528173][ T350] veth1: entered allmulticast mode
[ 23.532337][ T350] veth1: entered promiscuous mode
[ 23.668601][ T36] br1: port 2(veth1) entered blocking state
[ 23.669196][ T36] br1: port 2(veth1) entered forwarding state
[ 23.877144][ T353] br1: port 3(veth2) entered blocking state
[ 23.877638][ T353] br1: port 3(veth2) entered disabled state
[ 23.878084][ T353] veth2: entered allmulticast mode
[ 23.881506][ T353] veth2: entered promiscuous mode
[ 23.995203][ T37] br1: port 3(veth2) entered blocking state
[ 23.995958][ T37] br1: port 3(veth2) entered forwarding state
[ 28.495838][ T400] br2: port 1(w1) entered blocking state
[ 28.496189][ T400] br2: port 1(w1) entered disabled state
[ 28.496557][ T400] w1: entered allmulticast mode
[ 28.500030][ T400] w1: entered promiscuous mode
[ 29.274057][ T407] br2: port 2(vx100) entered blocking state
[ 29.274710][ T407] br2: port 2(vx100) entered disabled state
[ 29.275203][ T407] vx100: entered allmulticast mode
[ 29.278748][ T407] vx100: entered promiscuous mode
[ 29.279617][ T407] br2: port 2(vx100) entered blocking state
[ 29.280101][ T407] br2: port 2(vx100) entered forwarding state
[ 30.256706][ T38] br2: port 1(w1) entered blocking state
[ 30.257380][ T38] br2: port 1(w1) entered forwarding state
[ 33.499057][ T447] br2: port 1(w1) entered blocking state
[ 33.499526][ T447] br2: port 1(w1) entered disabled state
[ 33.499902][ T447] w1: entered allmulticast mode
[ 33.504455][ T447] w1: entered promiscuous mode
[ 34.309041][ T454] br2: port 2(vx100) entered blocking state
[ 34.309542][ T454] br2: port 2(vx100) entered disabled state
[ 34.310000][ T454] vx100: entered allmulticast mode
[ 34.313411][ T454] vx100: entered promiscuous mode
[ 34.314256][ T454] br2: port 2(vx100) entered blocking state
[ 34.314679][ T454] br2: port 2(vx100) entered forwarding state
[ 35.307343][ T37] br2: port 1(w1) entered blocking state
[ 35.307791][ T37] br2: port 1(w1) entered forwarding state
[ 49.062872][ T12] vx100: left allmulticast mode
[ 49.063318][ T12] vx100: left promiscuous mode
[ 49.063866][ T12] br2: port 2(vx100) entered disabled state
[ 49.067515][ T12] w1: left allmulticast mode
[ 49.067905][ T12] w1: left promiscuous mode
[ 49.068439][ T12] br2: port 1(w1) entered disabled state
[ 49.142632][ T12] ==================================================================
[ 49.143033][ T12] BUG: KASAN: slab-use-after-free in kobject_put+0xbb/0xd0
[ 49.143402][ T12] Read of size 1 at addr ffff88800e9296ac by task kworker/u16:0/12
[ 49.143740][ T12]
[ 49.143866][ T12] CPU: 2 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 49.143873][ T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 49.143877][ T12] Workqueue: netns cleanup_net
[ 49.143888][ T12] Call Trace:
[ 49.143890][ T12]
[ 49.143894][ T12] dump_stack_lvl+0x82/0xc0
[ 49.143904][ T12] print_address_description.constprop.0+0x2c/0x3a0
[ 49.143913][ T12] ? kobject_put+0xbb/0xd0
[ 49.143919][ T12] print_report+0xb4/0x270
[ 49.143925][ T12] ? kobject_put+0xbb/0xd0
[ 49.143930][ T12] ? kasan_addr_to_slab+0x21/0x70
[ 49.143934][ T12] ? kobject_put+0xbb/0xd0
[ 49.143939][ T12] kasan_report+0xca/0x100
[ 49.143946][ T12] ? kobject_put+0xbb/0xd0
[ 49.143953][ T12] kobject_put+0xbb/0xd0
[ 49.143959][ T12] netdev_run_todo+0x5f0/0xc60
[ 49.143965][ T12] ? rtnl_is_locked+0x15/0x20
[ 49.143971][ T12] ? dev_ingress_queue_create+0x190/0x190
[ 49.143976][ T12] ? generic_xdp_install+0x410/0x410
[ 49.143986][ T12] ops_undo_list+0x714/0x890
[ 49.143994][ T12] ? netns_get+0x110/0x110
[ 49.143998][ T12] ? cleanup_net+0x2d6/0x830
[ 49.144007][ T12] cleanup_net+0x3b2/0x830
[ 49.144014][ T12] ? net_passive_dec+0x190/0x190
[ 49.144020][ T12] ? rcu_is_watching+0x12/0xb0
[ 49.144030][ T12] process_one_work+0xe35/0x1650
[ 49.144041][ T12] ? pwq_dec_nr_in_flight+0x550/0x550
[ 49.144050][ T12] ? assign_work+0x168/0x240
[ 49.144057][ T12] worker_thread+0x591/0xcf0
[ 49.144066][ T12] ? rescuer_thread+0xd10/0xd10
[ 49.144071][ T12] kthread+0x37b/0x5f0
[ 49.144078][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 49.144082][ T12] ? ret_from_fork+0x1b/0x270
[ 49.144087][ T12] ? __lock_release+0x5d/0x170
[ 49.144096][ T12] ? rcu_is_watching+0x12/0xb0
[ 49.144101][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 49.144107][ T12] ret_from_fork+0x1db/0x270
[ 49.144110][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 49.144114][ T12] ret_from_fork_asm+0x11/0x20
[ 49.144127][ T12]
[ 49.144129][ T12]
[ 49.153429][ T12] Allocated by task 426:
[ 49.153620][ T12] kasan_save_stack+0x24/0x40
[ 49.153865][ T12] kasan_save_track+0x14/0x30
[ 49.154107][ T12] __kasan_kmalloc+0x7b/0x90
[ 49.154347][ T12] __kvmalloc_node_noprof+0x2e5/0x8e0
[ 49.154593][ T12] alloc_netdev_mqs+0x7d/0x1370
[ 49.154835][ T12] sit_init_net+0x169/0x550
[ 49.155075][ T12] ops_init+0x189/0x550
[ 49.155265][ T12] setup_net+0xf1/0x380
[ 49.155446][ T12] copy_net_ns+0x21a/0x380
[ 49.155687][ T12] create_new_namespaces+0x35f/0x900
[ 49.155930][ T12] unshare_nsproxy_namespaces+0x89/0x120
[ 49.156169][ T12] ksys_unshare+0x2a3/0x660
[ 49.156433][ T12] __x64_sys_unshare+0x31/0x40
[ 49.156672][ T12] do_syscall_64+0xc1/0xfd0
[ 49.156923][ T12] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 49.157215][ T12]
[ 49.157335][ T12] Freed by task 12:
[ 49.157515][ T12] kasan_save_stack+0x24/0x40
[ 49.157758][ T12] kasan_save_track+0x14/0x30
[ 49.157992][ T12] __kasan_save_free_info+0x3b/0x60
[ 49.158229][ T12] __kasan_slab_free+0x3f/0x60
[ 49.158465][ T12] kfree+0x21d/0x540
[ 49.158652][ T12] device_release+0x9c/0x210
[ 49.158897][ T12] kobject_cleanup+0xfe/0x360
[ 49.159137][ T12] netdev_run_todo+0x81f/0xc60
[ 49.159377][ T12] ops_undo_list+0x714/0x890
[ 49.159612][ T12] cleanup_net+0x3b2/0x830
[ 49.159852][ T12] process_one_work+0xe35/0x1650
[ 49.160103][ T12] worker_thread+0x591/0xcf0
[ 49.160342][ T12] kthread+0x37b/0x5f0
[ 49.160529][ T12] ret_from_fork+0x1db/0x270
[ 49.160780][ T12] ret_from_fork_asm+0x11/0x20
[ 49.161018][ T12]
[ 49.161137][ T12] The buggy address belongs to the object at ffff88800e929000
[ 49.161137][ T12] which belongs to the cache kmalloc-4k of size 4096
[ 49.161712][ T12] The buggy address is located 1708 bytes inside of
[ 49.161712][ T12] freed 4096-byte region [ffff88800e929000, ffff88800e92a000)
[ 49.162304][ T12]
[ 49.162433][ T12] The buggy address belongs to the physical page:
[ 49.162728][ T12] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe928
[ 49.163150][ T12] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[ 49.163509][ T12] flags: 0x80000000000040(head|node=0|zone=1)
[ 49.163814][ T12] page_type: f5(slab)
[ 49.164011][ T12] raw: 0080000000000040 ffff888001043700 ffffea000031e410 ffffea0000162c10
[ 49.164433][ T12] raw: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 49.164855][ T12] head: 0080000000000040 ffff888001043700 ffffea000031e410 ffffea0000162c10
[ 49.165289][ T12] head: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 49.165722][ T12] head: 0080000000000003 ffffea00003a4a01 00000000ffffffff 00000000ffffffff
[ 49.166148][ T12] head: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
[ 49.166584][ T12] page dumped because: kasan: bad access detected
[ 49.166887][ T12]
[ 49.167004][ T12] Memory state around the buggy address:
[ 49.167229][ T12] ffff88800e929580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 49.167578][ T12] ffff88800e929600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 49.167919][ T12] >ffff88800e929680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 49.168260][ T12] ^
[ 49.168489][ T12] ffff88800e929700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 49.168832][ T12] ffff88800e929780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 49.169164][ T12] ==================================================================
[ 49.169717][ T12] Disabling lock debugging due to kernel taint
[ 49.170080][ T12] ------------[ cut here ]------------
[ 49.170328][ T12] refcount_t: underflow; use-after-free.
[ 49.170654][ T12] WARNING: CPU: 2 PID: 12 at lib/refcount.c:28 refcount_warn_saturate+0x16f/0x1b0
[ 49.171102][ T12] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel bridge stp llc 8021q sch_ingress vrf veth
[ 49.171792][ T12] CPU: 2 UID: 0 PID: 12 Comm: kworker/u16:0 Tainted: G B 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 49.172358][ T12] Tainted: [B]=BAD_PAGE
[ 49.172601][ T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 49.172926][ T12] Workqueue: netns cleanup_net
[ 49.173213][ T12] RIP: 0010:refcount_warn_saturate+0x16f/0x1b0
[ 49.173729][ 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 e5 a5 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
[ 49.174940][ T12] RSP: 0018:ffffc900000c7a08 EFLAGS: 00010282
[ 49.175291][ T12] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[ 49.175703][ T12] RDX: 0000000000000002 RSI: 0000000000000004 RDI: 0000000000000001
[ 49.176089][ T12] RBP: 0000000000000003 R08: 0000000000000000 R09: fffffbfff4cfe134
[ 49.176541][ T12] R10: 0000000000000003 R11: ffffc900000c7580 R12: 0000000000000001
[ 49.176929][ T12] R13: dffffc0000000000 R14: dead000000000122 R15: dead000000000100
[ 49.177306][ T12] FS: 0000000000000000(0000) GS:ffff88808e6f2000(0000) knlGS:0000000000000000
[ 49.177767][ T12] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 49.178089][ T12] CR2: 00000000004a00a4 CR3: 000000000a853001 CR4: 0000000000772ef0
[ 49.178532][ T12] PKRU: 55555554
[ 49.178777][ T12] Call Trace:
[ 49.179147][ T12]
[ 49.179338][ T12] netdev_run_todo+0x5f0/0xc60
[ 49.179628][ T12] ? rtnl_is_locked+0x15/0x20
[ 49.180051][ T12] ? dev_ingress_queue_create+0x190/0x190
[ 49.180331][ T12] ? generic_xdp_install+0x410/0x410
[ 49.180624][ T12] ops_undo_list+0x714/0x890
[ 49.180904][ T12] ? netns_get+0x110/0x110
[ 49.181316][ T12] ? cleanup_net+0x2d6/0x830
[ 49.181635][ T12] cleanup_net+0x3b2/0x830
[ 49.182070][ T12] ? net_passive_dec+0x190/0x190
[ 49.182339][ T12] ? rcu_is_watching+0x12/0xb0
[ 49.182623][ T12] process_one_work+0xe35/0x1650
[ 49.183040][ T12] ? pwq_dec_nr_in_flight+0x550/0x550
[ 49.183341][ T12] ? assign_work+0x168/0x240
[ 49.183760][ T12] worker_thread+0x591/0xcf0
[ 49.184033][ T12] ? rescuer_thread+0xd10/0xd10
[ 49.184293][ T12] kthread+0x37b/0x5f0
[ 49.184535][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 49.184799][ T12] ? ret_from_fork+0x1b/0x270
[ 49.185062][ T12] ? __lock_release+0x5d/0x170
[ 49.185333][ T12] ? rcu_is_watching+0x12/0xb0
[ 49.185625][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 49.185888][ T12] ret_from_fork+0x1db/0x270
[ 49.186163][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 49.186443][ T12] ret_from_fork_asm+0x11/0x20
[ 49.186717][ T12]
[ 49.187054][ T12] irq event stamp: 55971
[ 49.187255][ T12] hardirqs last enabled at (55971): [] finish_task_switch.isra.0+0x245/0x960
[ 49.187747][ T12] hardirqs last disabled at (55970): [] __schedule+0x94a/0x1b10
[ 49.188188][ T12] softirqs last enabled at (55890): [] handle_softirqs+0x352/0x610
[ 49.188652][ T12] softirqs last disabled at (55881): [] irq_exit_rcu+0xab/0x100
[ 49.189233][ T12] ---[ end trace 0000000000000000 ]---
[ 49.400462][ T12] vx100: left allmulticast mode
[ 49.400829][ T12] vx100: left promiscuous mode
[ 49.401342][ T12] br2: port 2(vx100) entered disabled state
[ 49.405406][ T12] w1: left allmulticast mode
[ 49.405754][ T12] w1: left promiscuous mode
[ 49.406262][ T12] br2: port 1(w1) entered disabled state
[ 50.968053][ T576] br1: port 3(veth2) entered disabled state
[ 51.048953][ T577] veth2: left allmulticast mode
[ 51.049191][ T577] veth2: left promiscuous mode
[ 51.049512][ T577] br1: port 3(veth2) entered disabled state
[ 51.181772][ T579] br1: port 2(veth1) entered disabled state
[ 51.253304][ T580] veth1: left allmulticast mode
[ 51.253824][ T580] veth1: left promiscuous mode
[ 51.254199][ T580] br1: port 2(veth1) entered disabled state
[ 51.321537][ T581] vx100: left allmulticast mode
[ 51.321767][ T581] vx100: left promiscuous mode
[ 51.322089][ T581] br1: port 1(vx100) entered disabled state