[ 17.519140][ T251] ip (251) used greatest stack depth: 23712 bytes left
[ 22.329771][ T303] 8021q: 802.1Q VLAN Support v1.8
[ 28.764921][ T348] br1: port 1(vx100) entered blocking state
[ 28.766596][ T348] br1: port 1(vx100) entered disabled state
[ 28.767261][ T348] vx100: entered allmulticast mode
[ 28.772178][ T348] vx100: entered promiscuous mode
[ 28.773379][ T348] br1: port 1(vx100) entered blocking state
[ 28.773950][ T348] br1: port 1(vx100) entered forwarding state
[ 29.061603][ T350] br1: port 2(veth1) entered blocking state
[ 29.062142][ T350] br1: port 2(veth1) entered disabled state
[ 29.062636][ T350] veth1: entered allmulticast mode
[ 29.066719][ T350] veth1: entered promiscuous mode
[ 29.206096][ T46] br1: port 2(veth1) entered blocking state
[ 29.206743][ T46] br1: port 2(veth1) entered forwarding state
[ 29.470469][ T353] br1: port 3(veth2) entered blocking state
[ 29.470955][ T353] br1: port 3(veth2) entered disabled state
[ 29.471736][ T353] veth2: entered allmulticast mode
[ 29.475634][ T353] veth2: entered promiscuous mode
[ 29.605324][ T46] br1: port 3(veth2) entered blocking state
[ 29.605863][ T46] br1: port 3(veth2) entered forwarding state
[ 35.373975][ T399] br2: port 1(w1) entered blocking state
[ 35.374480][ T399] br2: port 1(w1) entered disabled state
[ 35.375061][ T399] w1: entered allmulticast mode
[ 35.381116][ T399] w1: entered promiscuous mode
[ 36.293651][ T406] br2: port 2(vx100) entered blocking state
[ 36.294442][ T406] br2: port 2(vx100) entered disabled state
[ 36.294994][ T406] vx100: entered allmulticast mode
[ 36.298824][ T406] vx100: entered promiscuous mode
[ 36.300107][ T406] br2: port 2(vx100) entered blocking state
[ 36.300631][ T406] br2: port 2(vx100) entered forwarding state
[ 37.531629][ T36] br2: port 1(w1) entered blocking state
[ 37.532345][ T36] br2: port 1(w1) entered forwarding state
[ 41.298025][ T446] br2: port 1(w1) entered blocking state
[ 41.298575][ T446] br2: port 1(w1) entered disabled state
[ 41.298948][ T446] w1: entered allmulticast mode
[ 41.302389][ T446] w1: entered promiscuous mode
[ 42.230021][ T453] br2: port 2(vx100) entered blocking state
[ 42.231060][ T453] br2: port 2(vx100) entered disabled state
[ 42.231550][ T453] vx100: entered allmulticast mode
[ 42.235111][ T453] vx100: entered promiscuous mode
[ 42.236231][ T453] br2: port 2(vx100) entered blocking state
[ 42.236814][ T453] br2: port 2(vx100) entered forwarding state
[ 43.401457][ T36] br2: port 1(w1) entered blocking state
[ 43.402096][ T36] br2: port 1(w1) entered forwarding state
[ 58.874730][ T68] vx100: left allmulticast mode
[ 58.875371][ T68] vx100: left promiscuous mode
[ 58.876250][ T68] br2: port 2(vx100) entered disabled state
[ 58.881465][ T68] w1: left allmulticast mode
[ 58.882012][ T68] w1: left promiscuous mode
[ 58.882973][ T68] br2: port 1(w1) entered disabled state
[ 58.986825][ T68] ==================================================================
[ 58.987280][ T68] BUG: KASAN: slab-use-after-free in kobject_put+0xbb/0xd0
[ 58.987682][ T68] Read of size 1 at addr ffff88800bf1c6ac by task kworker/u16:1/68
[ 58.988074][ T68]
[ 58.988222][ T68] CPU: 1 UID: 0 PID: 68 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 58.988229][ T68] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 58.988233][ T68] Workqueue: netns cleanup_net
[ 58.988242][ T68] Call Trace:
[ 58.988245][ T68]
[ 58.988250][ T68] dump_stack_lvl+0x82/0xc0
[ 58.988258][ T68] print_address_description.constprop.0+0x2c/0x3a0
[ 58.988265][ T68] ? kobject_put+0xbb/0xd0
[ 58.988271][ T68] print_report+0xb4/0x270
[ 58.988275][ T68] ? kobject_put+0xbb/0xd0
[ 58.988279][ T68] ? kasan_addr_to_slab+0x21/0x70
[ 58.988284][ T68] ? kobject_put+0xbb/0xd0
[ 58.988288][ T68] kasan_report+0xca/0x100
[ 58.988293][ T68] ? kobject_put+0xbb/0xd0
[ 58.988303][ T68] kobject_put+0xbb/0xd0
[ 58.988308][ T68] netdev_run_todo+0x5f0/0xc60
[ 58.988313][ T68] ? rtnl_is_locked+0x15/0x20
[ 58.988320][ T68] ? dev_ingress_queue_create+0x190/0x190
[ 58.988326][ T68] ? generic_xdp_install+0x410/0x410
[ 58.988335][ T68] ops_undo_list+0x714/0x890
[ 58.988344][ T68] ? netns_get+0x110/0x110
[ 58.988348][ T68] ? cleanup_net+0x2d6/0x830
[ 58.988358][ T68] cleanup_net+0x3b2/0x830
[ 58.988364][ T68] ? net_passive_dec+0x190/0x190
[ 58.988370][ T68] ? rcu_is_watching+0x12/0xb0
[ 58.988381][ T68] process_one_work+0xe35/0x1650
[ 58.988394][ T68] ? pwq_dec_nr_in_flight+0x550/0x550
[ 58.988403][ T68] ? assign_work+0x168/0x240
[ 58.988411][ T68] worker_thread+0x591/0xcf0
[ 58.988421][ T68] ? rescuer_thread+0xd10/0xd10
[ 58.988427][ T68] kthread+0x37b/0x5f0
[ 58.988434][ T68] ? kthread_is_per_cpu+0xc0/0xc0
[ 58.988438][ T68] ? ret_from_fork+0x1b/0x270
[ 58.988443][ T68] ? __lock_release+0x5d/0x170
[ 58.988452][ T68] ? rcu_is_watching+0x12/0xb0
[ 58.988456][ T68] ? kthread_is_per_cpu+0xc0/0xc0
[ 58.988462][ T68] ret_from_fork+0x1db/0x270
[ 58.988466][ T68] ? kthread_is_per_cpu+0xc0/0xc0
[ 58.988471][ T68] ret_from_fork_asm+0x11/0x20
[ 58.988486][ T68]
[ 58.988488][ T68]
[ 58.999593][ T68] Allocated by task 425:
[ 58.999800][ T68] kasan_save_stack+0x24/0x40
[ 59.000098][ T68] kasan_save_track+0x14/0x30
[ 59.000392][ T68] __kasan_kmalloc+0x7b/0x90
[ 59.000675][ T68] __kvmalloc_node_noprof+0x2e5/0x8e0
[ 59.000981][ T68] alloc_netdev_mqs+0x7d/0x1370
[ 59.001275][ T68] sit_init_net+0x169/0x550
[ 59.001567][ T68] ops_init+0x189/0x550
[ 59.001782][ T68] setup_net+0xf1/0x380
[ 59.001996][ T68] copy_net_ns+0x21a/0x380
[ 59.002288][ T68] create_new_namespaces+0x35f/0x900
[ 59.002582][ T68] unshare_nsproxy_namespaces+0x89/0x120
[ 59.002868][ T68] ksys_unshare+0x2a3/0x660
[ 59.003156][ T68] __x64_sys_unshare+0x31/0x40
[ 59.003444][ T68] do_syscall_64+0xc1/0xfd0
[ 59.003715][ T68] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 59.004071][ T68]
[ 59.004218][ T68] Freed by task 68:
[ 59.004437][ T68] kasan_save_stack+0x24/0x40
[ 59.004717][ T68] kasan_save_track+0x14/0x30
[ 59.005001][ T68] __kasan_save_free_info+0x3b/0x60
[ 59.005277][ T68] __kasan_slab_free+0x3f/0x60
[ 59.005567][ T68] kfree+0x21d/0x540
[ 59.005777][ T68] device_release+0x9c/0x210
[ 59.006064][ T68] kobject_cleanup+0xfe/0x360
[ 59.006350][ T68] netdev_run_todo+0x81f/0xc60
[ 59.006642][ T68] ops_undo_list+0x714/0x890
[ 59.006926][ T68] cleanup_net+0x3b2/0x830
[ 59.007214][ T68] process_one_work+0xe35/0x1650
[ 59.007492][ T68] worker_thread+0x591/0xcf0
[ 59.007747][ T68] kthread+0x37b/0x5f0
[ 59.007925][ T68] ret_from_fork+0x1db/0x270
[ 59.008205][ T68] ret_from_fork_asm+0x11/0x20
[ 59.008488][ T68]
[ 59.008631][ T68] The buggy address belongs to the object at ffff88800bf1c000
[ 59.008631][ T68] which belongs to the cache kmalloc-4k of size 4096
[ 59.009286][ T68] The buggy address is located 1708 bytes inside of
[ 59.009286][ T68] freed 4096-byte region [ffff88800bf1c000, ffff88800bf1d000)
[ 59.009943][ T68]
[ 59.010087][ T68] The buggy address belongs to the physical page:
[ 59.010441][ T68] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xbf18
[ 59.010973][ T68] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[ 59.011405][ T68] flags: 0x80000000000040(head|node=0|zone=1)
[ 59.011767][ T68] page_type: f5(slab)
[ 59.011995][ T68] raw: 0080000000000040 ffff888001043700 ffffea0000205410 ffffea00003e0610
[ 59.012481][ T68] raw: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 59.012981][ T68] head: 0080000000000040 ffff888001043700 ffffea0000205410 ffffea00003e0610
[ 59.013485][ T68] head: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 59.013973][ T68] head: 0080000000000003 ffffea00002fc601 00000000ffffffff 00000000ffffffff
[ 59.014480][ T68] head: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
[ 59.014982][ T68] page dumped because: kasan: bad access detected
[ 59.015346][ T68]
[ 59.015488][ T68] Memory state around the buggy address:
[ 59.015747][ T68] ffff88800bf1c580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 59.016123][ T68] ffff88800bf1c600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 59.016517][ T68] >ffff88800bf1c680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 59.016906][ T68] ^
[ 59.017161][ T68] ffff88800bf1c700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 59.017535][ T68] ffff88800bf1c780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 59.017917][ T68] ==================================================================
[ 59.019071][ T68] Disabling lock debugging due to kernel taint
[ 59.020539][ T68] ------------[ cut here ]------------
[ 59.020779][ T68] refcount_t: underflow; use-after-free.
[ 59.021065][ T68] WARNING: CPU: 0 PID: 68 at lib/refcount.c:28 refcount_warn_saturate+0x16f/0x1b0
[ 59.021464][ T68] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel bridge stp llc 8021q sch_ingress vrf veth
[ 59.021947][ T68] CPU: 0 UID: 0 PID: 68 Comm: kworker/u16:1 Tainted: G B 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 59.022437][ T68] Tainted: [B]=BAD_PAGE
[ 59.022608][ T68] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 59.022840][ T68] Workqueue: netns cleanup_net
[ 59.023065][ T68] RIP: 0010:refcount_warn_saturate+0x16f/0x1b0
[ 59.023376][ T68] 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 8c 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
[ 59.025134][ T68] RSP: 0000:ffffc90000497a08 EFLAGS: 00010282
[ 59.025411][ T68] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[ 59.025727][ T68] RDX: 0000000000000002 RSI: 0000000000000004 RDI: 0000000000000001
[ 59.026018][ T68] RBP: 0000000000000003 R08: 0000000000000000 R09: fffffbfff1afe134
[ 59.026364][ T68] R10: 0000000000000003 R11: ffffc90000497580 R12: 0000000000000001
[ 59.026624][ T68] R13: dffffc0000000000 R14: dead000000000122 R15: dead000000000100
[ 59.026901][ T68] FS: 0000000000000000(0000) GS:ffff8880a75f2000(0000) knlGS:0000000000000000
[ 59.027296][ T68] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 59.027537][ T68] CR2: 00007f9a87b0b888 CR3: 000000000b979005 CR4: 0000000000772ef0
[ 59.027894][ T68] PKRU: 55555554
[ 59.028026][ T68] Call Trace:
[ 59.028182][ T68]
[ 59.028286][ T68] netdev_run_todo+0x5f0/0xc60
[ 59.028533][ T68] ? rtnl_is_locked+0x15/0x20
[ 59.028736][ T68] ? dev_ingress_queue_create+0x190/0x190
[ 59.028930][ T68] ? generic_xdp_install+0x410/0x410
[ 59.029140][ T68] ops_undo_list+0x714/0x890
[ 59.029379][ T68] ? netns_get+0x110/0x110
[ 59.029570][ T68] ? cleanup_net+0x2d6/0x830
[ 59.029758][ T68] cleanup_net+0x3b2/0x830
[ 59.030014][ T68] ? net_passive_dec+0x190/0x190
[ 59.030249][ T68] ? rcu_is_watching+0x12/0xb0
[ 59.030467][ T68] process_one_work+0xe35/0x1650
[ 59.030706][ T68] ? pwq_dec_nr_in_flight+0x550/0x550
[ 59.030938][ T68] ? assign_work+0x168/0x240
[ 59.031137][ T68] worker_thread+0x591/0xcf0
[ 59.031317][ T68] ? rescuer_thread+0xd10/0xd10
[ 59.031494][ T68] kthread+0x37b/0x5f0
[ 59.031631][ T68] ? kthread_is_per_cpu+0xc0/0xc0
[ 59.031803][ T68] ? ret_from_fork+0x1b/0x270
[ 59.031976][ T68] ? __lock_release+0x5d/0x170
[ 59.032163][ T68] ? rcu_is_watching+0x12/0xb0
[ 59.032340][ T68] ? kthread_is_per_cpu+0xc0/0xc0
[ 59.032512][ T68] ret_from_fork+0x1db/0x270
[ 59.032686][ T68] ? kthread_is_per_cpu+0xc0/0xc0
[ 59.032857][ T68] ret_from_fork_asm+0x11/0x20
[ 59.033034][ T68]
[ 59.033175][ T68] irq event stamp: 48353
[ 59.033307][ T68] hardirqs last enabled at (48353): [] finish_task_switch.isra.0+0x245/0x960
[ 59.033645][ T68] hardirqs last disabled at (48352): [] __schedule+0x94a/0x1b10
[ 59.033948][ T68] softirqs last enabled at (48268): [] handle_softirqs+0x352/0x610
[ 59.034261][ T68] softirqs last disabled at (47959): [] irq_exit_rcu+0xab/0x100
[ 59.034557][ T68] ---[ end trace 0000000000000000 ]---
[ 59.292552][ T68] vx100: left allmulticast mode
[ 59.292815][ T68] vx100: left promiscuous mode
[ 59.294255][ T68] br2: port 2(vx100) entered disabled state
[ 59.296652][ T68] w1: left allmulticast mode
[ 59.296896][ T68] w1: left promiscuous mode
[ 59.297652][ T68] br2: port 1(w1) entered disabled state
[ 61.253885][ T574] br1: port 3(veth2) entered disabled state
[ 61.340731][ T575] veth2: left allmulticast mode
[ 61.341221][ T575] veth2: left promiscuous mode
[ 61.341758][ T575] br1: port 3(veth2) entered disabled state
[ 61.523344][ T577] br1: port 2(veth1) entered disabled state
[ 61.596434][ T579] veth1: left allmulticast mode
[ 61.596757][ T579] veth1: left promiscuous mode
[ 61.597247][ T579] br1: port 2(veth1) entered disabled state
[ 61.697151][ T580] vx100: left allmulticast mode
[ 61.697545][ T580] vx100: left promiscuous mode
[ 61.698007][ T580] br1: port 1(vx100) entered disabled state