[ 18.985080][ T252] ip (252) used greatest stack depth: 24472 bytes left
[ 21.579742][ T265] bridge: filtering via arp/ip/ip6tables is no longer available by default. Update your scripts to load br_netfilter if you need this.
[ 21.601560][ T265] Bridge firewalling registered
[ 22.045017][ T269] ip (269) used greatest stack depth: 23568 bytes left
[ 22.795547][ T275] 8021q: 802.1Q VLAN Support v1.8
[ 24.052262][ T283] br0: port 1(vtep-host) entered blocking state
[ 24.053467][ T283] br0: port 1(vtep-host) entered disabled state
[ 24.054398][ T283] vtep-host: entered allmulticast mode
[ 24.058890][ T283] vtep-host: entered promiscuous mode
[ 25.171257][ T291] br0: port 2(vxd) entered blocking state
[ 25.171668][ T291] br0: port 2(vxd) entered disabled state
[ 25.172100][ T291] vxd: entered allmulticast mode
[ 25.175700][ T291] vxd: entered promiscuous mode
[ 26.732656][ T302] br0: port 2(vxd) entered blocking state
[ 26.733211][ T302] br0: port 2(vxd) entered forwarding state
[ 26.734227][ T302] br0: port 1(vtep-host) entered blocking state
[ 26.734679][ T302] br0: port 1(vtep-host) entered forwarding state
[ 30.565465][ T70] ==================================================================
[ 30.565815][ T70] BUG: KASAN: slab-use-after-free in kobject_put+0xbb/0xd0
[ 30.566116][ T70] Read of size 1 at addr ffff888008a946ac by task kworker/u16:1/70
[ 30.566368][ T70]
[ 30.566454][ T70] CPU: 0 UID: 0 PID: 70 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 30.566460][ T70] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 30.566463][ T70] Workqueue: netns cleanup_net
[ 30.566471][ T70] Call Trace:
[ 30.566474][ T70]
[ 30.566478][ T70] dump_stack_lvl+0x82/0xc0
[ 30.566486][ T70] print_address_description.constprop.0+0x2c/0x3a0
[ 30.566497][ T70] ? kobject_put+0xbb/0xd0
[ 30.566502][ T70] print_report+0xb4/0x270
[ 30.566506][ T70] ? kobject_put+0xbb/0xd0
[ 30.566509][ T70] ? kasan_addr_to_slab+0x21/0x70
[ 30.566513][ T70] ? kobject_put+0xbb/0xd0
[ 30.566516][ T70] kasan_report+0xca/0x100
[ 30.566521][ T70] ? kobject_put+0xbb/0xd0
[ 30.566527][ T70] kobject_put+0xbb/0xd0
[ 30.566531][ T70] netdev_run_todo+0x5f0/0xc60
[ 30.566537][ T70] ? dev_ingress_queue_create+0x190/0x190
[ 30.566540][ T70] ? generic_xdp_install+0x410/0x410
[ 30.566547][ T70] ops_undo_list+0x714/0x890
[ 30.566556][ T70] ? netns_get+0x110/0x110
[ 30.566559][ T70] ? cleanup_net+0x2d6/0x830
[ 30.566564][ T70] cleanup_net+0x3b2/0x830
[ 30.566567][ T70] ? net_passive_dec+0x190/0x190
[ 30.566571][ T70] ? rcu_is_watching+0x12/0xb0
[ 30.566578][ T70] process_one_work+0xe35/0x1650
[ 30.566586][ T70] ? pwq_dec_nr_in_flight+0x550/0x550
[ 30.566592][ T70] ? assign_work+0x168/0x240
[ 30.566596][ T70] worker_thread+0x591/0xcf0
[ 30.566602][ T70] ? rescuer_thread+0xd10/0xd10
[ 30.566605][ T70] kthread+0x37b/0x5f0
[ 30.566610][ T70] ? kthread_is_per_cpu+0xc0/0xc0
[ 30.566612][ T70] ? ret_from_fork+0x1b/0x270
[ 30.566620][ T70] ? __lock_release+0x5d/0x170
[ 30.566627][ T70] ? rcu_is_watching+0x12/0xb0
[ 30.566630][ T70] ? kthread_is_per_cpu+0xc0/0xc0
[ 30.566633][ T70] ret_from_fork+0x1db/0x270
[ 30.566636][ T70] ? kthread_is_per_cpu+0xc0/0xc0
[ 30.566639][ T70] ret_from_fork_asm+0x11/0x20
[ 30.566649][ T70]
[ 30.566650][ T70]
[ 30.573262][ T70] Allocated by task 251:
[ 30.573412][ T70] kasan_save_stack+0x24/0x40
[ 30.573613][ T70] kasan_save_track+0x14/0x30
[ 30.573787][ T70] __kasan_kmalloc+0x7b/0x90
[ 30.574069][ T70] __kvmalloc_node_noprof+0x2e5/0x8e0
[ 30.574267][ T70] alloc_netdev_mqs+0x7d/0x1370
[ 30.574462][ T70] sit_init_net+0x169/0x550
[ 30.574658][ T70] ops_init+0x189/0x550
[ 30.574801][ T70] setup_net+0xf1/0x380
[ 30.574933][ T70] copy_net_ns+0x21a/0x380
[ 30.575125][ T70] create_new_namespaces+0x35f/0x900
[ 30.575309][ T70] unshare_nsproxy_namespaces+0x89/0x120
[ 30.575503][ T70] ksys_unshare+0x2a3/0x660
[ 30.575770][ T70] __x64_sys_unshare+0x31/0x40
[ 30.575945][ T70] do_syscall_64+0xc1/0xfd0
[ 30.576141][ T70] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 30.576382][ T70]
[ 30.576577][ T70] Freed by task 70:
[ 30.576710][ T70] kasan_save_stack+0x24/0x40
[ 30.576893][ T70] kasan_save_track+0x14/0x30
[ 30.577084][ T70] __kasan_save_free_info+0x3b/0x60
[ 30.577354][ T70] __kasan_slab_free+0x3f/0x60
[ 30.577554][ T70] kfree+0x21d/0x540
[ 30.577688][ T70] device_release+0x9c/0x210
[ 30.577871][ T70] kobject_cleanup+0xfe/0x360
[ 30.578056][ T70] netdev_run_todo+0x81f/0xc60
[ 30.578342][ T70] ops_undo_list+0x714/0x890
[ 30.578538][ T70] cleanup_net+0x3b2/0x830
[ 30.578709][ T70] process_one_work+0xe35/0x1650
[ 30.578881][ T70] worker_thread+0x591/0xcf0
[ 30.579167][ T70] kthread+0x37b/0x5f0
[ 30.579305][ T70] ret_from_fork+0x1db/0x270
[ 30.579509][ T70] ret_from_fork_asm+0x11/0x20
[ 30.579699][ T70]
[ 30.579887][ T70] The buggy address belongs to the object at ffff888008a94000
[ 30.579887][ T70] which belongs to the cache kmalloc-4k of size 4096
[ 30.580333][ T70] The buggy address is located 1708 bytes inside of
[ 30.580333][ T70] freed 4096-byte region [ffff888008a94000, ffff888008a95000)
[ 30.580848][ T70]
[ 30.580934][ T70] The buggy address belongs to the physical page:
[ 30.581167][ T70] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x8a90
[ 30.581574][ T70] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[ 30.581833][ T70] flags: 0x80000000000040(head|node=0|zone=1)
[ 30.582058][ T70] page_type: f5(slab)
[ 30.582315][ T70] raw: 0080000000000040 ffff888001043700 ffffea00001f4210 ffffea00000a2e10
[ 30.582631][ T70] raw: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 30.582931][ T70] head: 0080000000000040 ffff888001043700 ffffea00001f4210 ffffea00000a2e10
[ 30.583376][ T70] head: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 30.583685][ T70] head: 0080000000000003 ffffea000022a401 00000000ffffffff 00000000ffffffff
[ 30.584097][ T70] head: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
[ 30.584415][ T70] page dumped because: kasan: bad access detected
[ 30.584630][ T70]
[ 30.584799][ T70] Memory state around the buggy address:
[ 30.584968][ T70] ffff888008a94580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 30.585241][ T70] ffff888008a94600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 30.585595][ T70] >ffff888008a94680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 30.585849][ T70] ^
[ 30.586020][ T70] ffff888008a94700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 30.586394][ T70] ffff888008a94780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 30.586644][ T70] ==================================================================
[ 30.586976][ T70] Disabling lock debugging due to kernel taint
[ 30.587314][ T70] ------------[ cut here ]------------
[ 30.587515][ T70] refcount_t: underflow; use-after-free.
[ 30.587739][ T70] WARNING: CPU: 3 PID: 70 at lib/refcount.c:28 refcount_warn_saturate+0x16f/0x1b0
[ 30.588146][ T70] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel 8021q veth br_netfilter bridge stp llc
[ 30.588599][ T70] CPU: 3 UID: 0 PID: 70 Comm: kworker/u16:1 Tainted: G B 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 30.589065][ T70] Tainted: [B]=BAD_PAGE
[ 30.589207][ T70] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 30.589490][ T70] Workqueue: netns cleanup_net
[ 30.589755][ T70] RIP: 0010:refcount_warn_saturate+0x16f/0x1b0
[ 30.590059][ T70] Code: 83 90 02 80 fb 01 0f 87 95 6b d6 fe 83 e3 01 0f 85 51 ff ff ff c6 05 b1 83 90 02 01 90 48 c7 c7 a0 de 25 a3 e8 c2 8b 15 ff 90 <0f> 0b 90 90 e9 33 ff ff ff 48 89 df e8 f0 34 a1 ff e9 ba fe ff ff
[ 30.590802][ T70] RSP: 0018:ffffc900004b7a08 EFLAGS: 00010282
[ 30.591086][ T70] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[ 30.591360][ T70] RDX: 0000000000000002 RSI: 0000000000000004 RDI: 0000000000000001
[ 30.591632][ T70] RBP: 0000000000000003 R08: 0000000000000000 R09: fffffbfff477e220
[ 30.591905][ T70] R10: 0000000000000003 R11: ffffc900004b7580 R12: 0000000000000001
[ 30.592179][ T70] R13: dffffc0000000000 R14: dead000000000122 R15: dead000000000100
[ 30.592464][ T70] FS: 0000000000000000(0000) GS:ffff88809136c000(0000) knlGS:0000000000000000
[ 30.592834][ T70] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 30.593204][ T70] CR2: 00007fa9dc2f7000 CR3: 000000002ab35001 CR4: 0000000000772ef0
[ 30.593497][ T70] PKRU: 55555554
[ 30.593645][ T70] Call Trace:
[ 30.593813][ T70]
[ 30.594022][ T70] netdev_run_todo+0x5f0/0xc60
[ 30.594224][ T70] ? dev_ingress_queue_create+0x190/0x190
[ 30.594431][ T70] ? generic_xdp_install+0x410/0x410
[ 30.594640][ T70] ops_undo_list+0x714/0x890
[ 30.594842][ T70] ? netns_get+0x110/0x110
[ 30.595023][ T70] ? cleanup_net+0x2d6/0x830
[ 30.595206][ T70] cleanup_net+0x3b2/0x830
[ 30.595423][ T70] ? net_passive_dec+0x190/0x190
[ 30.595713][ T70] ? rcu_is_watching+0x12/0xb0
[ 30.595915][ T70] process_one_work+0xe35/0x1650
[ 30.596102][ T70] ? pwq_dec_nr_in_flight+0x550/0x550
[ 30.596305][ T70] ? assign_work+0x168/0x240
[ 30.596612][ T70] worker_thread+0x591/0xcf0
[ 30.596799][ T70] ? rescuer_thread+0xd10/0xd10
[ 30.597011][ T70] kthread+0x37b/0x5f0
[ 30.597160][ T70] ? kthread_is_per_cpu+0xc0/0xc0
[ 30.597373][ T70] ? ret_from_fork+0x1b/0x270
[ 30.597706][ T70] ? __lock_release+0x5d/0x170
[ 30.597942][ T70] ? rcu_is_watching+0x12/0xb0
[ 30.598169][ T70] ? kthread_is_per_cpu+0xc0/0xc0
[ 30.598404][ T70] ret_from_fork+0x1db/0x270
[ 30.598734][ T70] ? kthread_is_per_cpu+0xc0/0xc0
[ 30.598962][ T70] ret_from_fork_asm+0x11/0x20
[ 30.599169][ T70]
[ 30.599353][ T70] irq event stamp: 7441
[ 30.599623][ T70] hardirqs last enabled at (7441): [] finish_task_switch.isra.0+0x245/0x960
[ 30.600071][ T70] hardirqs last disabled at (7440): [] __schedule+0x94a/0x1b10
[ 30.600548][ T70] softirqs last enabled at (6938): [] handle_softirqs+0x352/0x610
[ 30.600949][ T70] softirqs last disabled at (6933): [] irq_exit_rcu+0xab/0x100
[ 30.601320][ T70] ---[ end trace 0000000000000000 ]---
[ 30.608574][ T70] br0: port 1(vtep-host) entered disabled state
[ 30.614676][ T70] vtep-host (unregistering): left allmulticast mode
[ 30.614965][ T70] vtep-host (unregistering): left promiscuous mode
[ 30.615234][ T70] br0: port 1(vtep-host) entered disabled state
[ 30.955099][ T70] vxd: left allmulticast mode
[ 30.955324][ T70] vxd: left promiscuous mode
[ 30.955698][ T70] br0: port 2(vxd) entered disabled state