[ 15.104756][ T270] ip (270) used greatest stack depth: 24776 bytes left
[ 19.768522][ T307] ip (307) used greatest stack depth: 24688 bytes left
[ 19.885487][ T308] eth0: renamed from r1h1
[ 20.160741][ T310] eth0: renamed from r2h1
[ 20.528438][ T313] eth2: renamed from r2h2
[ 20.897507][ T316] eth1: renamed from r2r1
[ 21.462326][ T321] br0: port 1(eth0) entered blocking state
[ 21.462789][ T321] br0: port 1(eth0) entered disabled state
[ 21.463209][ T321] eth0: entered allmulticast mode
[ 21.465361][ T321] eth0: entered promiscuous mode
[ 21.472220][ T38] br0: port 1(eth0) entered blocking state
[ 21.472698][ T38] br0: port 1(eth0) entered forwarding state
[ 21.583541][ T323] br0: port 2(eth1) entered blocking state
[ 21.584599][ T323] br0: port 2(eth1) entered disabled state
[ 21.585034][ T323] eth1: entered allmulticast mode
[ 21.587131][ T323] eth1: entered promiscuous mode
[ 21.590386][ T96] br0: port 2(eth1) entered blocking state
[ 21.590787][ T96] br0: port 2(eth1) entered forwarding state
[ 40.681439][ T68] eth1: left allmulticast mode
[ 40.681940][ T68] eth1: left promiscuous mode
[ 40.683012][ T68] br0: port 2(eth1) entered disabled state
[ 40.686539][ T68] eth0: left allmulticast mode
[ 40.687279][ T68] eth0: left promiscuous mode
[ 40.687696][ T68] br0: port 1(eth0) entered disabled state
[ 40.756137][ T68] ==================================================================
[ 40.756406][ T68] BUG: KASAN: slab-use-after-free in kobject_put+0xbb/0xd0
[ 40.756640][ T68] Read of size 1 at addr ffff8880089c46c4 by task kworker/u16:1/68
[ 40.756864][ T68]
[ 40.756946][ T68] CPU: 0 UID: 0 PID: 68 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 40.756951][ T68] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 40.756953][ T68] Workqueue: netns cleanup_net
[ 40.756961][ T68] Call Trace:
[ 40.756962][ T68]
[ 40.756965][ T68] dump_stack_lvl+0x82/0xc0
[ 40.756970][ T68] print_address_description.constprop.0+0x2c/0x3a0
[ 40.756977][ T68] ? kobject_put+0xbb/0xd0
[ 40.756981][ T68] print_report+0xb4/0x270
[ 40.756984][ T68] ? kobject_put+0xbb/0xd0
[ 40.756987][ T68] ? kasan_addr_to_slab+0x21/0x70
[ 40.756991][ T68] ? kobject_put+0xbb/0xd0
[ 40.756994][ T68] kasan_report+0xca/0x100
[ 40.756998][ T68] ? kobject_put+0xbb/0xd0
[ 40.757003][ T68] kobject_put+0xbb/0xd0
[ 40.757007][ T68] netdev_run_todo+0x5f0/0xc60
[ 40.757011][ T68] ? rtnl_is_locked+0x15/0x20
[ 40.757015][ T68] ? dev_ingress_queue_create+0x190/0x190
[ 40.757018][ T68] ? generic_xdp_install+0x410/0x410
[ 40.757025][ T68] ops_undo_list+0x714/0x890
[ 40.757030][ T68] ? rtnl_net_dumpid_one+0x270/0x270
[ 40.757033][ T68] ? cleanup_net+0x2d6/0x8b0
[ 40.757039][ T68] cleanup_net+0x3b2/0x8b0
[ 40.757044][ T68] ? net_passive_dec+0x190/0x190
[ 40.757048][ T68] ? rcu_is_watching+0x12/0xb0
[ 40.757054][ T68] process_one_work+0xe35/0x1650
[ 40.757063][ T68] ? pwq_dec_nr_in_flight+0x550/0x550
[ 40.757068][ T68] ? assign_work+0x168/0x240
[ 40.757072][ T68] worker_thread+0x591/0xcf0
[ 40.757078][ T68] ? rescuer_thread+0xd10/0xd10
[ 40.757082][ T68] kthread+0x37b/0x5f0
[ 40.757087][ T68] ? kthread_is_per_cpu+0xc0/0xc0
[ 40.757089][ T68] ? ret_from_fork+0x1b/0x270
[ 40.757094][ T68] ? __lock_release+0x5d/0x170
[ 40.757098][ T68] ? rcu_is_watching+0x12/0xb0
[ 40.757101][ T68] ? kthread_is_per_cpu+0xc0/0xc0
[ 40.757104][ T68] ret_from_fork+0x1db/0x270
[ 40.757107][ T68] ? kthread_is_per_cpu+0xc0/0xc0
[ 40.757110][ T68] ret_from_fork_asm+0x11/0x20
[ 40.757122][ T68]
[ 40.757123][ T68]
[ 40.763132][ T68] Allocated by task 264:
[ 40.763253][ T68] kasan_save_stack+0x24/0x40
[ 40.763414][ T68] kasan_save_track+0x14/0x30
[ 40.763566][ T68] __kasan_kmalloc+0x7b/0x90
[ 40.763719][ T68] __kvmalloc_node_noprof+0x2e5/0x8e0
[ 40.763876][ T68] alloc_netdev_mqs+0x7d/0x1370
[ 40.764034][ T68] ip6_tnl_init_net+0x102/0x3f0
[ 40.764187][ T68] ops_init+0x189/0x550
[ 40.764313][ T68] setup_net+0xf1/0x380
[ 40.764430][ T68] copy_net_ns+0x253/0x510
[ 40.764593][ T68] create_new_namespaces+0x35f/0x900
[ 40.764748][ T68] unshare_nsproxy_namespaces+0x8a/0x1a0
[ 40.764900][ T68] ksys_unshare+0x2be/0x6e0
[ 40.765054][ T68] __x64_sys_unshare+0x31/0x40
[ 40.765215][ T68] do_syscall_64+0xc1/0xfd0
[ 40.765377][ T68] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 40.765571][ T68]
[ 40.765648][ T68] Freed by task 68:
[ 40.765762][ T68] kasan_save_stack+0x24/0x40
[ 40.765917][ T68] kasan_save_track+0x14/0x30
[ 40.766071][ T68] __kasan_save_free_info+0x3b/0x60
[ 40.766234][ T68] __kasan_slab_free+0x3f/0x60
[ 40.766389][ T68] kfree+0x21d/0x540
[ 40.766508][ T68] device_release+0x9c/0x210
[ 40.766662][ T68] kobject_cleanup+0xfe/0x360
[ 40.766813][ T68] netdev_run_todo+0x81f/0xc60
[ 40.766969][ T68] ops_undo_list+0x714/0x890
[ 40.767125][ T68] cleanup_net+0x3b2/0x8b0
[ 40.767287][ T68] process_one_work+0xe35/0x1650
[ 40.767447][ T68] worker_thread+0x591/0xcf0
[ 40.767598][ T68] kthread+0x37b/0x5f0
[ 40.767715][ T68] ret_from_fork+0x1db/0x270
[ 40.767869][ T68] ret_from_fork_asm+0x11/0x20
[ 40.768021][ T68]
[ 40.768099][ T68] The buggy address belongs to the object at ffff8880089c4000
[ 40.768099][ T68] which belongs to the cache kmalloc-4k of size 4096
[ 40.768478][ T68] The buggy address is located 1732 bytes inside of
[ 40.768478][ T68] freed 4096-byte region [ffff8880089c4000, ffff8880089c5000)
[ 40.768841][ T68]
[ 40.768917][ T68] The buggy address belongs to the physical page:
[ 40.769101][ T68] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x89c0
[ 40.769378][ T68] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[ 40.769611][ T68] flags: 0x80000000000040(head|node=0|zone=1)
[ 40.769801][ T68] page_type: f5(slab)
[ 40.769921][ T68] raw: 0080000000000040 ffff888001043700 ffffea00001e1c10 ffffea000021a210
[ 40.770193][ T68] raw: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 40.770471][ T68] head: 0080000000000040 ffff888001043700 ffffea00001e1c10 ffffea000021a210
[ 40.770749][ T68] head: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 40.771020][ T68] head: 0080000000000003 ffffea0000227001 00000000ffffffff 00000000ffffffff
[ 40.771293][ T68] head: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
[ 40.771562][ T68] page dumped because: kasan: bad access detected
[ 40.771762][ T68]
[ 40.771838][ T68] Memory state around the buggy address:
[ 40.771986][ T68] ffff8880089c4580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 40.772215][ T68] ffff8880089c4600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 40.772432][ T68] >ffff8880089c4680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 40.772651][ T68] ^
[ 40.772833][ T68] ffff8880089c4700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 40.773050][ T68] ffff8880089c4780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 40.773273][ T68] ==================================================================
[ 40.776136][ T68] Disabling lock debugging due to kernel taint
[ 40.776349][ T68] ------------[ cut here ]------------
[ 40.776492][ T68] refcount_t: underflow; use-after-free.
[ 40.776663][ T68] WARNING: CPU: 3 PID: 68 at lib/refcount.c:28 refcount_warn_saturate+0x16f/0x1b0
[ 40.776926][ T68] Modules linked in:
[ 40.777047][ T68] CPU: 3 UID: 0 PID: 68 Comm: kworker/u16:1 Tainted: G B 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 40.777430][ T68] Tainted: [B]=BAD_PAGE
[ 40.777547][ T68] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 40.777736][ T68] Workqueue: netns cleanup_net
[ 40.777897][ T68] RIP: 0010:refcount_warn_saturate+0x16f/0x1b0
[ 40.778092][ T68] Code: cc 38 03 80 fb 01 0f 87 29 33 d7 fe 83 e3 01 0f 85 51 ff ff ff c6 05 17 cc 38 03 01 90 48 c7 c7 40 ba c5 90 e8 62 d6 16 ff 90 <0f> 0b 90 90 e9 33 ff ff ff 48 89 df e8 c0 9d a0 ff e9 ba fe ff ff
[ 40.778633][ T68] RSP: 0018:ffffc90000497a08 EFLAGS: 00010282
[ 40.778823][ T68] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[ 40.779046][ T68] RDX: 0000000000000002 RSI: 0000000000000004 RDI: 0000000000000001
[ 40.779285][ T68] RBP: 0000000000000003 R08: 0000000000000000 R09: fffffbfff2380934
[ 40.779511][ T68] R10: 0000000000000003 R11: ffffc90000497580 R12: 0000000000000001
[ 40.779732][ T68] R13: dffffc0000000000 R14: dead000000000122 R15: dead000000000100
[ 40.780045][ T68] FS: 0000000000000000(0000) GS:ffff8880da088000(0000) knlGS:0000000000000000
[ 40.780318][ T68] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 40.780511][ T68] CR2: 00007f02a055f000 CR3: 000000004f349005 CR4: 0000000000772ef0
[ 40.780734][ T68] PKRU: 55555554
[ 40.780845][ T68] Call Trace:
[ 40.780960][ T68]
[ 40.781040][ T68] netdev_run_todo+0x5f0/0xc60
[ 40.781200][ T68] ? rtnl_is_locked+0x15/0x20
[ 40.781442][ T68] ? dev_ingress_queue_create+0x190/0x190
[ 40.781595][ T68] ? generic_xdp_install+0x410/0x410
[ 40.781748][ T68] ops_undo_list+0x714/0x890
[ 40.781898][ T68] ? rtnl_net_dumpid_one+0x270/0x270
[ 40.782046][ T68] ? cleanup_net+0x2d6/0x8b0
[ 40.782205][ T68] cleanup_net+0x3b2/0x8b0
[ 40.782359][ T68] ? net_passive_dec+0x190/0x190
[ 40.782593][ T68] ? rcu_is_watching+0x12/0xb0
[ 40.782745][ T68] process_one_work+0xe35/0x1650
[ 40.782900][ T68] ? pwq_dec_nr_in_flight+0x550/0x550
[ 40.783139][ T68] ? assign_work+0x168/0x240
[ 40.783382][ T68] worker_thread+0x591/0xcf0
[ 40.783615][ T68] ? rescuer_thread+0xd10/0xd10
[ 40.783765][ T68] kthread+0x37b/0x5f0
[ 40.783878][ T68] ? kthread_is_per_cpu+0xc0/0xc0
[ 40.784027][ T68] ? ret_from_fork+0x1b/0x270
[ 40.784182][ T68] ? __lock_release+0x5d/0x170
[ 40.784340][ T68] ? rcu_is_watching+0x12/0xb0
[ 40.784501][ T68] ? kthread_is_per_cpu+0xc0/0xc0
[ 40.784734][ T68] ret_from_fork+0x1db/0x270
[ 40.784967][ T68] ? kthread_is_per_cpu+0xc0/0xc0
[ 40.785121][ T68] ret_from_fork_asm+0x11/0x20
[ 40.785283][ T68]
[ 40.785396][ T68] irq event stamp: 36115
[ 40.785509][ T68] hardirqs last enabled at (36115): [] finish_task_switch.isra.0+0x245/0x960
[ 40.785888][ T68] hardirqs last disabled at (36114): [] __schedule+0x94a/0x1b10
[ 40.786156][ T68] softirqs last enabled at (36096): [] handle_softirqs+0x352/0x610
[ 40.786506][ T68] softirqs last disabled at (36089): [] irq_exit_rcu+0xab/0x100
[ 40.786769][ T68] ---[ end trace 0000000000000000 ]---
[ 45.785501][ T529] eth0: renamed from r1h1
[ 45.987423][ T531] eth0: renamed from r2h1
[ 46.231310][ T534] eth2: renamed from r2h2
[ 46.491229][ T537] eth1: renamed from r2r1
[ 47.551401][ T552] br0: port 1(eth0) entered blocking state
[ 47.551698][ T552] br0: port 1(eth0) entered disabled state
[ 47.551915][ T552] eth0: entered allmulticast mode
[ 47.553019][ T552] eth0: entered promiscuous mode
[ 47.562383][ T96] br0: port 1(eth0) entered blocking state
[ 47.562590][ T96] br0: port 1(eth0) entered forwarding state
[ 47.628312][ T553] br0: port 2(eth1) entered blocking state
[ 47.628549][ T553] br0: port 2(eth1) entered disabled state
[ 47.628759][ T553] eth1: entered allmulticast mode
[ 47.630332][ T553] eth1: entered promiscuous mode
[ 47.632033][ T46] br0: port 2(eth1) entered blocking state
[ 47.632350][ T46] br0: port 2(eth1) entered forwarding state
[ 63.370778][ T68] eth1: left allmulticast mode
[ 63.370992][ T68] eth1: left promiscuous mode
[ 63.371290][ T68] br0: port 2(eth1) entered disabled state
[ 63.372525][ T68] eth0: left allmulticast mode
[ 63.372695][ T68] eth0: left promiscuous mode
[ 63.372970][ T68] br0: port 1(eth0) entered disabled state
[ 68.450186][ T759] eth0: renamed from r1h1
[ 68.623213][ T761] eth0: renamed from r2h1
[ 68.884011][ T764] eth2: renamed from r2h2
[ 69.164137][ T767] eth1: renamed from r2r1
[ 69.511366][ T772] br0: port 1(eth0) entered blocking state
[ 69.511619][ T772] br0: port 1(eth0) entered disabled state
[ 69.511854][ T772] eth0: entered allmulticast mode
[ 69.512967][ T772] eth0: entered promiscuous mode
[ 69.514826][ T35] br0: port 1(eth0) entered blocking state
[ 69.515048][ T35] br0: port 1(eth0) entered forwarding state
[ 69.575999][ T773] br0: port 2(eth1) entered blocking state
[ 69.576259][ T773] br0: port 2(eth1) entered disabled state
[ 69.576526][ T773] eth1: entered allmulticast mode
[ 69.577943][ T773] eth1: entered promiscuous mode
[ 69.579748][ T96] br0: port 2(eth1) entered blocking state
[ 69.579998][ T96] br0: port 2(eth1) entered forwarding state
[ 85.635152][ T68] eth1: left allmulticast mode
[ 85.635476][ T68] eth1: left promiscuous mode
[ 85.635908][ T68] br0: port 2(eth1) entered disabled state
[ 85.637905][ T68] eth0: left allmulticast mode
[ 85.638074][ T68] eth0: left promiscuous mode
[ 85.638413][ T68] br0: port 1(eth0) entered disabled state
[ 90.709343][ T990] eth0: renamed from r1h1
[ 90.867393][ T992] eth0: renamed from r2h1
[ 91.107290][ T995] eth2: renamed from r2h2
[ 91.341077][ T998] eth1: renamed from r2r1
[ 92.332050][ T1013] br0: port 1(eth0) entered blocking state
[ 92.332391][ T1013] br0: port 1(eth0) entered disabled state
[ 92.332680][ T1013] eth0: entered allmulticast mode
[ 92.333825][ T1013] eth0: entered promiscuous mode
[ 92.335821][ T92] br0: port 1(eth0) entered blocking state
[ 92.336054][ T92] br0: port 1(eth0) entered forwarding state
[ 92.403111][ T1014] br0: port 2(eth1) entered blocking state
[ 92.403380][ T1014] br0: port 2(eth1) entered disabled state
[ 92.403629][ T1014] eth1: entered allmulticast mode
[ 92.404804][ T1014] eth1: entered promiscuous mode
[ 92.406564][ T96] br0: port 2(eth1) entered blocking state
[ 92.406784][ T96] br0: port 2(eth1) entered forwarding state
[ 108.429094][ T68] eth1: left allmulticast mode
[ 108.429300][ T68] eth1: left promiscuous mode
[ 108.429664][ T68] br0: port 2(eth1) entered disabled state
[ 108.431224][ T68] eth0: left allmulticast mode
[ 108.431389][ T68] eth0: left promiscuous mode
[ 108.431648][ T68] br0: port 1(eth0) entered disabled state