[ 13.578583][ T246] ip (246) used greatest stack depth: 24688 bytes left
[ 13.705388][ T248] ip (248) used greatest stack depth: 23760 bytes left
[ 16.285864][ T288] bond0: (slave veth0): Enslaving as a backup interface with a down link
[ 16.395146][ T289] bond0: (slave veth1): Enslaving as a backup interface with a down link
[ 16.510663][ T290] br0: port 1(veth0) entered blocking state
[ 16.511056][ T290] br0: port 1(veth0) entered disabled state
[ 16.511422][ T290] veth0: entered allmulticast mode
[ 16.513544][ T290] veth0: entered promiscuous mode
[ 16.617006][ T291] br0: port 2(veth1) entered blocking state
[ 16.617411][ T291] br0: port 2(veth1) entered disabled state
[ 16.617803][ T291] veth1: entered allmulticast mode
[ 16.620099][ T291] veth1: entered promiscuous mode
[ 16.957138][ T37] br0: port 1(veth0) entered blocking state
[ 16.957691][ T37] br0: port 1(veth0) entered forwarding state
[ 16.959805][ T37] br0: port 2(veth1) entered blocking state
[ 16.960248][ T37] br0: port 2(veth1) entered forwarding state
[ 18.237679][ T12] bond0: (slave veth1): link status definitely up
[ 18.238195][ T12] bond0: (slave veth1): making interface the new active one
[ 18.239522][ T12] bond0: active interface up!
[ 18.704030][ T12] veth1: left allmulticast mode
[ 18.704430][ T12] veth1: left promiscuous mode
[ 18.704922][ T12] br0: port 2(veth1) entered disabled state
[ 18.707734][ T12] veth0: left allmulticast mode
[ 18.708045][ T12] veth0: left promiscuous mode
[ 18.708491][ T12] br0: port 1(veth0) entered disabled state
[ 18.745052][ T12] ==================================================================
[ 18.745304][ T12] BUG: KASAN: slab-use-after-free in kobject_put+0xbb/0xd0
[ 18.745536][ T12] Read of size 1 at addr ffff88800511469c by task kworker/u16:0/12
[ 18.745759][ T12]
[ 18.745839][ T12] CPU: 2 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 18.745843][ T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 18.745846][ T12] Workqueue: netns cleanup_net
[ 18.745853][ T12] Call Trace:
[ 18.745855][ T12]
[ 18.745857][ T12] dump_stack_lvl+0x82/0xc0
[ 18.745861][ T12] print_address_description.constprop.0+0x2c/0x3a0
[ 18.745867][ T12] ? kobject_put+0xbb/0xd0
[ 18.745871][ T12] print_report+0xb4/0x270
[ 18.745874][ T12] ? kobject_put+0xbb/0xd0
[ 18.745876][ T12] ? kasan_addr_to_slab+0x21/0x70
[ 18.745879][ T12] ? kobject_put+0xbb/0xd0
[ 18.745881][ T12] kasan_report+0xca/0x100
[ 18.745884][ T12] ? kobject_put+0xbb/0xd0
[ 18.745889][ T12] kobject_put+0xbb/0xd0
[ 18.745892][ T12] netdev_run_todo+0x5f0/0xc60
[ 18.745896][ T12] ? dev_ingress_queue_create+0x190/0x190
[ 18.745900][ T12] ? generic_xdp_install+0x410/0x410
[ 18.745902][ T12] ? __lock_release+0x5d/0x170
[ 18.745908][ T12] ? bond_net_exit_rtnl+0xcf/0x2f0
[ 18.745915][ T12] ops_undo_list+0x714/0x890
[ 18.745920][ T12] ? netns_get+0x110/0x110
[ 18.745923][ T12] ? cleanup_net+0x2d6/0x830
[ 18.745928][ T12] cleanup_net+0x3b2/0x830
[ 18.745933][ T12] ? net_passive_dec+0x190/0x190
[ 18.745937][ T12] ? rcu_is_watching+0x12/0xb0
[ 18.745943][ T12] process_one_work+0xe35/0x1650
[ 18.745950][ T12] ? pwq_dec_nr_in_flight+0x550/0x550
[ 18.745956][ T12] ? assign_work+0x168/0x240
[ 18.745960][ T12] worker_thread+0x591/0xcf0
[ 18.745965][ T12] ? rescuer_thread+0xd10/0xd10
[ 18.745968][ T12] kthread+0x37b/0x5f0
[ 18.745972][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 18.745974][ T12] ? ret_from_fork+0x1b/0x270
[ 18.745980][ T12] ? __lock_release+0x5d/0x170
[ 18.745988][ T12] ? rcu_is_watching+0x12/0xb0
[ 18.745991][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 18.745994][ T12] ret_from_fork+0x1db/0x270
[ 18.745998][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 18.746000][ T12] ret_from_fork_asm+0x11/0x20
[ 18.746009][ T12]
[ 18.746010][ T12]
[ 18.752144][ T12] Allocated by task 244:
[ 18.752259][ T12] kasan_save_stack+0x24/0x40
[ 18.752417][ T12] kasan_save_track+0x14/0x30
[ 18.752566][ T12] __kasan_kmalloc+0x7b/0x90
[ 18.752719][ T12] __kvmalloc_node_noprof+0x2e5/0x8e0
[ 18.752874][ T12] alloc_netdev_mqs+0x7d/0x1310
[ 18.753031][ T12] sit_init_net+0x169/0x550
[ 18.753184][ T12] ops_init+0x189/0x550
[ 18.753302][ T12] setup_net+0xf1/0x380
[ 18.753417][ T12] copy_net_ns+0x21a/0x380
[ 18.753570][ T12] create_new_namespaces+0x35f/0x900
[ 18.753723][ T12] unshare_nsproxy_namespaces+0x89/0x120
[ 18.753877][ T12] ksys_unshare+0x2a3/0x660
[ 18.754029][ T12] __x64_sys_unshare+0x31/0x40
[ 18.754181][ T12] do_syscall_64+0xc1/0xfd0
[ 18.754340][ T12] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 18.754536][ T12]
[ 18.754613][ T12] Freed by task 12:
[ 18.754727][ T12] kasan_save_stack+0x24/0x40
[ 18.754895][ T12] kasan_save_track+0x14/0x30
[ 18.755061][ T12] __kasan_save_free_info+0x3b/0x60
[ 18.755224][ T12] __kasan_slab_free+0x3f/0x60
[ 18.755385][ T12] kfree+0x21d/0x540
[ 18.755509][ T12] device_release+0x9c/0x210
[ 18.755676][ T12] kobject_cleanup+0xfe/0x360
[ 18.755841][ T12] netdev_run_todo+0x81f/0xc60
[ 18.755999][ T12] ops_undo_list+0x714/0x890
[ 18.756155][ T12] cleanup_net+0x3b2/0x830
[ 18.756306][ T12] process_one_work+0xe35/0x1650
[ 18.756468][ T12] worker_thread+0x591/0xcf0
[ 18.756630][ T12] kthread+0x37b/0x5f0
[ 18.756757][ T12] ret_from_fork+0x1db/0x270
[ 18.756925][ T12] ret_from_fork_asm+0x11/0x20
[ 18.757097][ T12]
[ 18.757181][ T12] The buggy address belongs to the object at ffff888005114000
[ 18.757181][ T12] which belongs to the cache kmalloc-4k of size 4096
[ 18.757578][ T12] The buggy address is located 1692 bytes inside of
[ 18.757578][ T12] freed 4096-byte region [ffff888005114000, ffff888005115000)
[ 18.757976][ T12]
[ 18.758059][ T12] The buggy address belongs to the physical page:
[ 18.758261][ T12] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x5110
[ 18.758557][ T12] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[ 18.758827][ T12] flags: 0x80000000000040(head|node=0|zone=1)
[ 18.759045][ T12] page_type: f5(slab)
[ 18.759173][ T12] raw: 0080000000000040 ffff888001043700 ffffea00002cf410 ffffea00001ee610
[ 18.759481][ T12] raw: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 18.759783][ T12] head: 0080000000000040 ffff888001043700 ffffea00002cf410 ffffea00001ee610
[ 18.760085][ T12] head: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 18.760386][ T12] head: 0080000000000003 ffffea0000144401 00000000ffffffff 00000000ffffffff
[ 18.760711][ T12] head: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
[ 18.761009][ T12] page dumped because: kasan: bad access detected
[ 18.761218][ T12]
[ 18.761306][ T12] Memory state around the buggy address:
[ 18.761472][ T12] ffff888005114580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 18.761728][ T12] ffff888005114600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 18.761974][ T12] >ffff888005114680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 18.762218][ T12] ^
[ 18.762383][ T12] ffff888005114700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 18.762624][ T12] ffff888005114780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 18.762865][ T12] ==================================================================
[ 18.763177][ T12] Disabling lock debugging due to kernel taint
[ 18.763399][ T12] ------------[ cut here ]------------
[ 18.763579][ T12] refcount_t: underflow; use-after-free.
[ 18.763788][ T12] WARNING: CPU: 2 PID: 12 at lib/refcount.c:28 refcount_warn_saturate+0x16f/0x1b0
[ 18.764116][ T12] Modules linked in:
[ 18.764282][ T12] CPU: 2 UID: 0 PID: 12 Comm: kworker/u16:0 Tainted: G B 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 18.764674][ T12] Tainted: [B]=BAD_PAGE
[ 18.764821][ T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 18.765082][ T12] Workqueue: netns cleanup_net
[ 18.765271][ T12] RIP: 0010:refcount_warn_saturate+0x16f/0x1b0
[ 18.765486][ T12] Code: a2 b5 02 80 fb 01 0f 87 db 6e d8 fe 83 e3 01 0f 85 51 ff ff ff c6 05 c2 a2 b5 02 01 90 48 c7 c7 60 a8 25 b7 e8 72 c3 17 ff 90 <0f> 0b 90 90 e9 33 ff ff ff 48 89 df e8 20 69 a0 ff e9 ba fe ff ff
[ 18.766076][ T12] RSP: 0018:ffffc900000c7a08 EFLAGS: 00010282
[ 18.766289][ T12] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[ 18.766535][ T12] RDX: 0000000000000002 RSI: 0000000000000004 RDI: 0000000000000001
[ 18.766778][ T12] RBP: 0000000000000003 R08: 0000000000000000 R09: fffffbfff6f7e134
[ 18.767054][ T12] R10: 0000000000000003 R11: ffffc900000c7580 R12: 0000000000000001
[ 18.767309][ T12] R13: dffffc0000000000 R14: dead000000000122 R15: dead000000000100
[ 18.767551][ T12] FS: 0000000000000000(0000) GS:ffff888077481000(0000) knlGS:0000000000000000
[ 18.767831][ T12] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 18.768130][ T12] CR2: 00007fbddac21100 CR3: 0000000002535004 CR4: 0000000000772ef0
[ 18.768379][ T12] PKRU: 55555554
[ 18.768513][ T12] Call Trace:
[ 18.768743][ T12]
[ 18.768848][ T12] netdev_run_todo+0x5f0/0xc60
[ 18.769043][ T12] ? dev_ingress_queue_create+0x190/0x190
[ 18.769228][ T12] ? generic_xdp_install+0x410/0x410
[ 18.769397][ T12] ? __lock_release+0x5d/0x170
[ 18.769652][ T12] ? bond_net_exit_rtnl+0xcf/0x2f0
[ 18.769823][ T12] ops_undo_list+0x714/0x890
[ 18.770009][ T12] ? netns_get+0x110/0x110
[ 18.770194][ T12] ? cleanup_net+0x2d6/0x830
[ 18.770457][ T12] cleanup_net+0x3b2/0x830
[ 18.770640][ T12] ? net_passive_dec+0x190/0x190
[ 18.770809][ T12] ? rcu_is_watching+0x12/0xb0
[ 18.770977][ T12] process_one_work+0xe35/0x1650
[ 18.771256][ T12] ? pwq_dec_nr_in_flight+0x550/0x550
[ 18.771442][ T12] ? assign_work+0x168/0x240
[ 18.771612][ T12] worker_thread+0x591/0xcf0
[ 18.771782][ T12] ? rescuer_thread+0xd10/0xd10
[ 18.772043][ T12] kthread+0x37b/0x5f0
[ 18.772179][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 18.772365][ T12] ? ret_from_fork+0x1b/0x270
[ 18.772551][ T12] ? __lock_release+0x5d/0x170
[ 18.772820][ T12] ? rcu_is_watching+0x12/0xb0
[ 18.773091][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 18.773265][ T12] ret_from_fork+0x1db/0x270
[ 18.773451][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 18.773702][ T12] ret_from_fork_asm+0x11/0x20
[ 18.773875][ T12]
[ 18.774024][ T12] irq event stamp: 13489
[ 18.774170][ T12] hardirqs last enabled at (13489): [] irqentry_exit+0x3b/0x80
[ 18.774720][ T12] hardirqs last disabled at (13488): [] handle_softirqs+0x47f/0x610
[ 18.775007][ T12] softirqs last enabled at (13366): [] handle_softirqs+0x352/0x610
[ 18.775459][ T12] softirqs last disabled at (13357): [] irq_exit_rcu+0xab/0x100
[ 18.775760][ T12] ---[ end trace 0000000000000000 ]---
[ 18.781458][ T12] bond0: (slave veth1): Releasing backup interface
[ 18.797161][ T12] bond0: (slave veth0): Releasing backup interface
[ 18.836720][ T12] bond0 (unregistering): Released all slaves