[ 23.233157][ T298] bridge: filtering via arp/ip/ip6tables is no longer available by default. Update your scripts to load br_netfilter if you need this.
[ 24.041381][ T306] br0: port 1(c1) entered blocking state
[ 24.041994][ T306] br0: port 1(c1) entered disabled state
[ 24.042476][ T306] c1: entered allmulticast mode
[ 24.046372][ T306] c1: entered promiscuous mode
[ 24.722181][ T311] br0: port 2(c2) entered blocking state
[ 24.722546][ T311] br0: port 2(c2) entered disabled state
[ 24.722915][ T311] c2: entered allmulticast mode
[ 24.737285][ T311] c2: entered promiscuous mode
[ 25.383712][ T316] br0: port 3(c3) entered blocking state
[ 25.384086][ T316] br0: port 3(c3) entered disabled state
[ 25.384437][ T316] c3: entered allmulticast mode
[ 25.387778][ T316] c3: entered promiscuous mode
[ 26.047837][ T321] br0: port 4(sender) entered blocking state
[ 26.048312][ T321] br0: port 4(sender) entered disabled state
[ 26.048751][ T321] sender: entered allmulticast mode
[ 26.053825][ T321] sender: entered promiscuous mode
[ 26.295740][ T323] br0: port 4(sender) entered blocking state
[ 26.296357][ T323] br0: port 4(sender) entered forwarding state
[ 26.297248][ T323] br0: port 3(c3) entered blocking state
[ 26.297561][ T323] br0: port 3(c3) entered forwarding state
[ 26.298204][ T323] br0: port 2(c2) entered blocking state
[ 26.298519][ T323] br0: port 2(c2) entered forwarding state
[ 26.299155][ T323] br0: port 1(c1) entered blocking state
[ 26.299589][ T323] br0: port 1(c1) entered forwarding state
[ 26.481588][ T324] Bridge firewalling registered
[ 40.319139][ T12] ==================================================================
[ 40.319407][ T12] BUG: KASAN: slab-use-after-free in kobject_put+0xbb/0xd0
[ 40.319675][ T12] Read of size 1 at addr ffff888007cd96ac by task kworker/u16:0/12
[ 40.319901][ T12]
[ 40.319986][ T12] CPU: 1 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 40.319991][ T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 40.319993][ T12] Workqueue: netns cleanup_net
[ 40.320000][ T12] Call Trace:
[ 40.320002][ T12]
[ 40.320004][ T12] dump_stack_lvl+0x82/0xc0
[ 40.320011][ T12] print_address_description.constprop.0+0x2c/0x3a0
[ 40.320029][ T12] ? kobject_put+0xbb/0xd0
[ 40.320033][ T12] print_report+0xb4/0x270
[ 40.320036][ T12] ? kobject_put+0xbb/0xd0
[ 40.320039][ T12] ? kasan_addr_to_slab+0x21/0x70
[ 40.320043][ T12] ? kobject_put+0xbb/0xd0
[ 40.320046][ T12] kasan_report+0xca/0x100
[ 40.320051][ T12] ? kobject_put+0xbb/0xd0
[ 40.320056][ T12] kobject_put+0xbb/0xd0
[ 40.320060][ T12] netdev_run_todo+0x5f0/0xc60
[ 40.320065][ T12] ? dev_ingress_queue_create+0x190/0x190
[ 40.320068][ T12] ? generic_xdp_install+0x410/0x410
[ 40.320075][ T12] ops_undo_list+0x714/0x890
[ 40.320082][ T12] ? netns_get+0x110/0x110
[ 40.320085][ T12] ? cleanup_net+0x2d6/0x830
[ 40.320090][ T12] cleanup_net+0x3b2/0x830
[ 40.320093][ T12] ? net_passive_dec+0x190/0x190
[ 40.320097][ T12] ? rcu_is_watching+0x12/0xb0
[ 40.320108][ T12] process_one_work+0xe35/0x1650
[ 40.320119][ T12] ? pwq_dec_nr_in_flight+0x550/0x550
[ 40.320125][ T12] ? assign_work+0x168/0x240
[ 40.320129][ T12] worker_thread+0x591/0xcf0
[ 40.320134][ T12] ? rescuer_thread+0xd10/0xd10
[ 40.320138][ T12] kthread+0x37b/0x5f0
[ 40.320142][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 40.320144][ T12] ? ret_from_fork+0x1b/0x270
[ 40.320151][ T12] ? __lock_release+0x5d/0x170
[ 40.320159][ T12] ? rcu_is_watching+0x12/0xb0
[ 40.320162][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 40.320165][ T12] ret_from_fork+0x1db/0x270
[ 40.320168][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 40.320171][ T12] ret_from_fork_asm+0x11/0x20
[ 40.320180][ T12]
[ 40.320181][ T12]
[ 40.326088][ T12] Allocated by task 278:
[ 40.326207][ T12] kasan_save_stack+0x24/0x40
[ 40.326366][ T12] kasan_save_track+0x14/0x30
[ 40.326528][ T12] __kasan_kmalloc+0x7b/0x90
[ 40.326686][ T12] __kvmalloc_node_noprof+0x2e5/0x8e0
[ 40.326849][ T12] alloc_netdev_mqs+0x7d/0x1370
[ 40.327003][ T12] sit_init_net+0x169/0x550
[ 40.327161][ T12] ops_init+0x189/0x550
[ 40.327280][ T12] setup_net+0xf1/0x380
[ 40.327395][ T12] copy_net_ns+0x21a/0x380
[ 40.327557][ T12] create_new_namespaces+0x35f/0x900
[ 40.327715][ T12] unshare_nsproxy_namespaces+0x89/0x120
[ 40.327872][ T12] ksys_unshare+0x2a3/0x660
[ 40.328027][ T12] __x64_sys_unshare+0x31/0x40
[ 40.328179][ T12] do_syscall_64+0xc1/0xfd0
[ 40.328337][ T12] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 40.328532][ T12]
[ 40.328613][ T12] Freed by task 12:
[ 40.328729][ T12] kasan_save_stack+0x24/0x40
[ 40.328887][ T12] kasan_save_track+0x14/0x30
[ 40.329045][ T12] __kasan_save_free_info+0x3b/0x60
[ 40.329199][ T12] __kasan_slab_free+0x3f/0x60
[ 40.329350][ T12] kfree+0x21d/0x540
[ 40.329467][ T12] device_release+0x9c/0x210
[ 40.329639][ T12] kobject_cleanup+0xfe/0x360
[ 40.329794][ T12] netdev_run_todo+0x81f/0xc60
[ 40.329949][ T12] ops_undo_list+0x714/0x890
[ 40.330104][ T12] cleanup_net+0x3b2/0x830
[ 40.330262][ T12] process_one_work+0xe35/0x1650
[ 40.330415][ T12] worker_thread+0x591/0xcf0
[ 40.330574][ T12] kthread+0x37b/0x5f0
[ 40.330692][ T12] ret_from_fork+0x1db/0x270
[ 40.330848][ T12] ret_from_fork_asm+0x11/0x20
[ 40.331003][ T12]
[ 40.331085][ T12] The buggy address belongs to the object at ffff888007cd9000
[ 40.331085][ T12] which belongs to the cache kmalloc-4k of size 4096
[ 40.331460][ T12] The buggy address is located 1708 bytes inside of
[ 40.331460][ T12] freed 4096-byte region [ffff888007cd9000, ffff888007cda000)
[ 40.331836][ T12]
[ 40.331929][ T12] The buggy address belongs to the physical page:
[ 40.332116][ T12] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x7cd8
[ 40.332392][ T12] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[ 40.332644][ T12] flags: 0x80000000000040(head|node=0|zone=1)
[ 40.332841][ T12] page_type: f5(slab)
[ 40.332963][ T12] raw: 0080000000000040 ffff888001043700 ffffea0000240610 ffffea0000206a10
[ 40.333246][ T12] raw: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 40.333522][ T12] head: 0080000000000040 ffff888001043700 ffffea0000240610 ffffea0000206a10
[ 40.333902][ T12] head: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 40.334174][ T12] head: 0080000000000003 ffffea00001f3601 00000000ffffffff 00000000ffffffff
[ 40.334573][ T12] head: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
[ 40.334882][ T12] page dumped because: kasan: bad access detected
[ 40.335084][ T12]
[ 40.335250][ T12] Memory state around the buggy address:
[ 40.335400][ T12] ffff888007cd9580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 40.335633][ T12] ffff888007cd9600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 40.335857][ T12] >ffff888007cd9680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 40.336096][ T12] ^
[ 40.336244][ T12] ffff888007cd9700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 40.336565][ T12] ffff888007cd9780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 40.336796][ T12] ==================================================================
[ 40.337131][ T12] Disabling lock debugging due to kernel taint
[ 40.337699][ T12] ------------[ cut here ]------------
[ 40.337973][ T12] refcount_t: underflow; use-after-free.
[ 40.338276][ T12] WARNING: CPU: 0 PID: 12 at lib/refcount.c:28 refcount_warn_saturate+0x16f/0x1b0
[ 40.338773][ T12] Modules linked in: nf_conntrack_netlink nfnetlink_queue nft_queue nft_ct nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nf_tables br_netfilter veth bridge stp llc
[ 40.339625][ T12] CPU: 0 UID: 0 PID: 12 Comm: kworker/u16:0 Tainted: G B 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 40.340239][ T12] Tainted: [B]=BAD_PAGE
[ 40.340436][ T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 40.340786][ T12] Workqueue: netns cleanup_net
[ 40.341089][ T12] RIP: 0010:refcount_warn_saturate+0x16f/0x1b0
[ 40.341447][ T12] 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 9f 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
[ 40.342397][ T12] RSP: 0018:ffffc900000c7a08 EFLAGS: 00010282
[ 40.342770][ T12] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[ 40.343186][ T12] RDX: 0000000000000002 RSI: 0000000000000004 RDI: 0000000000000001
[ 40.343605][ T12] RBP: 0000000000000003 R08: 0000000000000000 R09: fffffbfff3f7e220
[ 40.344018][ T12] R10: 0000000000000003 R11: ffffc900000c7580 R12: 0000000000000001
[ 40.344441][ T12] R13: dffffc0000000000 R14: dead000000000122 R15: dead000000000100
[ 40.344852][ T12] FS: 0000000000000000(0000) GS:ffff8880951ec000(0000) knlGS:0000000000000000
[ 40.345330][ T12] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 40.345682][ T12] CR2: 00007f8a634a2920 CR3: 000000002f935003 CR4: 0000000000772ef0
[ 40.346096][ T12] PKRU: 55555554
[ 40.346294][ T12] Call Trace:
[ 40.346494][ T12]
[ 40.346644][ T12] netdev_run_todo+0x5f0/0xc60
[ 40.346947][ T12] ? dev_ingress_queue_create+0x190/0x190
[ 40.347218][ T12] ? generic_xdp_install+0x410/0x410
[ 40.347496][ T12] ops_undo_list+0x714/0x890
[ 40.347945][ T12] ? netns_get+0x110/0x110
[ 40.348220][ T12] ? cleanup_net+0x2d6/0x830
[ 40.348484][ T12] cleanup_net+0x3b2/0x830
[ 40.348749][ T12] ? net_passive_dec+0x190/0x190
[ 40.349039][ T12] ? rcu_is_watching+0x12/0xb0
[ 40.349478][ T12] process_one_work+0xe35/0x1650
[ 40.349759][ T12] ? pwq_dec_nr_in_flight+0x550/0x550
[ 40.350043][ T12] ? assign_work+0x168/0x240
[ 40.350473][ T12] worker_thread+0x591/0xcf0
[ 40.350751][ T12] ? rescuer_thread+0xd10/0xd10
[ 40.351026][ T12] kthread+0x37b/0x5f0
[ 40.351230][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 40.351492][ T12] ? ret_from_fork+0x1b/0x270
[ 40.351766][ T12] ? __lock_release+0x5d/0x170
[ 40.352049][ T12] ? rcu_is_watching+0x12/0xb0
[ 40.352314][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 40.352584][ T12] ret_from_fork+0x1db/0x270
[ 40.352860][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 40.353126][ T12] ret_from_fork_asm+0x11/0x20
[ 40.353395][ T12]
[ 40.353601][ T12] irq event stamp: 11451
[ 40.353989][ T12] hardirqs last enabled at (11451): [] finish_task_switch.isra.0+0x245/0x960
[ 40.354879][ T12] hardirqs last disabled at (11450): [] __schedule+0x94a/0x1b10
[ 40.355503][ T12] softirqs last enabled at (11304): [] handle_softirqs+0x352/0x610
[ 40.355990][ T12] softirqs last disabled at (11297): [] irq_exit_rcu+0xab/0x100
[ 40.356459][ T12] ---[ end trace 0000000000000000 ]---
[ 40.360903][ T12] br0: port 1(c1) entered disabled state
[ 40.380338][ T12] c1 (unregistering): left allmulticast mode
[ 40.380720][ T12] c1 (unregistering): left promiscuous mode
[ 40.381101][ T12] br0: port 1(c1) entered disabled state
[ 40.680422][ T12] br0: port 2(c2) entered disabled state
[ 40.684942][ T12] c2 (unregistering): left allmulticast mode
[ 40.685211][ T12] c2 (unregistering): left promiscuous mode
[ 40.685518][ T12] br0: port 2(c2) entered disabled state
[ 41.027933][ T12] br0: port 3(c3) entered disabled state
[ 41.033404][ T12] c3 (unregistering): left allmulticast mode
[ 41.033656][ T12] c3 (unregistering): left promiscuous mode
[ 41.034570][ T12] br0: port 3(c3) entered disabled state
[ 41.362474][ T12] br0: port 4(sender) entered disabled state
[ 41.375017][ T12] sender (unregistering): left allmulticast mode
[ 41.375255][ T12] sender (unregistering): left promiscuous mode
[ 41.375520][ T12] br0: port 4(sender) entered disabled state