[ 22.053675][ T297] ip (297) used greatest stack depth: 24304 bytes left
[ 22.674030][ T301] 8021q: 802.1Q VLAN Support v1.8
[ 27.793838][ T343] br1: port 1(vx100) entered blocking state
[ 27.794935][ T343] br1: port 1(vx100) entered disabled state
[ 27.795606][ T343] vx100: entered allmulticast mode
[ 27.799716][ T343] vx100: entered promiscuous mode
[ 27.801008][ T343] br1: port 1(vx100) entered blocking state
[ 27.801630][ T343] br1: port 1(vx100) entered forwarding state
[ 28.102163][ T345] br1: port 2(veth1) entered blocking state
[ 28.102898][ T345] br1: port 2(veth1) entered disabled state
[ 28.103611][ T345] veth1: entered allmulticast mode
[ 28.109100][ T345] veth1: entered promiscuous mode
[ 28.272014][ T113] br1: port 2(veth1) entered blocking state
[ 28.273013][ T113] br1: port 2(veth1) entered forwarding state
[ 28.874552][ T352] br2: port 1(vx200) entered blocking state
[ 28.875031][ T352] br2: port 1(vx200) entered disabled state
[ 28.875499][ T352] vx200: entered allmulticast mode
[ 28.879284][ T352] vx200: entered promiscuous mode
[ 28.880784][ T352] br2: port 1(vx200) entered blocking state
[ 28.881362][ T352] br2: port 1(vx200) entered forwarding state
[ 29.317456][ T355] br2: port 2(veth2.20) entered blocking state
[ 29.317904][ T355] br2: port 2(veth2.20) entered disabled state
[ 29.318596][ T355] veth2.20: entered allmulticast mode
[ 29.318890][ T355] veth2: entered allmulticast mode
[ 29.322474][ T355] veth2.20: entered promiscuous mode
[ 29.322810][ T355] veth2: entered promiscuous mode
[ 29.485832][ T357] br2: port 2(veth2.20) entered blocking state
[ 29.486662][ T357] br2: port 2(veth2.20) entered forwarding state
[ 34.951882][ T402] br3: port 1(w1) entered blocking state
[ 34.952551][ T402] br3: port 1(w1) entered disabled state
[ 34.952953][ T402] w1: entered allmulticast mode
[ 34.956675][ T402] w1: entered promiscuous mode
[ 35.749014][ T408] br3: port 2(vx100) entered blocking state
[ 35.749798][ T408] br3: port 2(vx100) entered disabled state
[ 35.750964][ T408] vx100: entered allmulticast mode
[ 35.757172][ T408] vx100: entered promiscuous mode
[ 35.772181][ T408] br3: port 2(vx100) entered blocking state
[ 35.772785][ T408] br3: port 2(vx100) entered forwarding state
[ 37.098590][ T72] br3: port 1(w1) entered blocking state
[ 37.099467][ T72] br3: port 1(w1) entered forwarding state
[ 41.414821][ T456] br3: port 1(w1) entered blocking state
[ 41.415261][ T456] br3: port 1(w1) entered disabled state
[ 41.415631][ T456] w1: entered allmulticast mode
[ 41.420787][ T456] w1: entered promiscuous mode
[ 42.272609][ T462] br3: port 2(vx200) entered blocking state
[ 42.273298][ T462] br3: port 2(vx200) entered disabled state
[ 42.273738][ T462] vx200: entered allmulticast mode
[ 42.277131][ T462] vx200: entered promiscuous mode
[ 42.278489][ T462] br3: port 2(vx200) entered blocking state
[ 42.278915][ T462] br3: port 2(vx200) entered forwarding state
[ 43.440678][ T38] br3: port 1(w1) entered blocking state
[ 43.441106][ T38] br3: port 1(w1) entered forwarding state
[ 46.420784][ T501] br3: port 3(w1.20) entered blocking state
[ 46.421464][ T501] br3: port 3(w1.20) entered disabled state
[ 46.422676][ T501] w1.20: entered allmulticast mode
[ 46.441537][ T501] w1.20: entered promiscuous mode
[ 47.664832][ T514] br3: port 3(w1.20) entered blocking state
[ 47.665538][ T514] br3: port 3(w1.20) entered forwarding state
[ 60.191671][ T70] w1.20: left allmulticast mode
[ 60.192233][ T70] w1.20: left promiscuous mode
[ 60.193102][ T70] br3: port 3(w1.20) entered disabled state
[ 60.196273][ T70] vx200: left allmulticast mode
[ 60.196684][ T70] vx200: left promiscuous mode
[ 60.197435][ T70] br3: port 2(vx200) entered disabled state
[ 60.201803][ T70] w1: left allmulticast mode
[ 60.202350][ T70] w1: left promiscuous mode
[ 60.203196][ T70] br3: port 1(w1) entered disabled state
[ 60.283283][ T70] ==================================================================
[ 60.283600][ T70] BUG: KASAN: slab-use-after-free in kobject_put+0xbb/0xd0
[ 60.283848][ T70] Read of size 1 at addr ffff8880096716ac by task kworker/u16:1/70
[ 60.284088][ T70]
[ 60.284223][ T70] CPU: 0 UID: 0 PID: 70 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 60.284228][ T70] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 60.284231][ T70] Workqueue: netns cleanup_net
[ 60.284239][ T70] Call Trace:
[ 60.284243][ T70]
[ 60.284246][ T70] dump_stack_lvl+0x82/0xc0
[ 60.284254][ T70] print_address_description.constprop.0+0x2c/0x3a0
[ 60.284261][ T70] ? kobject_put+0xbb/0xd0
[ 60.284265][ T70] print_report+0xb4/0x270
[ 60.284268][ T70] ? kobject_put+0xbb/0xd0
[ 60.284272][ T70] ? kasan_addr_to_slab+0x21/0x70
[ 60.284275][ T70] ? kobject_put+0xbb/0xd0
[ 60.284278][ T70] kasan_report+0xca/0x100
[ 60.284281][ T70] ? kobject_put+0xbb/0xd0
[ 60.284287][ T70] kobject_put+0xbb/0xd0
[ 60.284290][ T70] netdev_run_todo+0x5f0/0xc60
[ 60.284294][ T70] ? rtnl_is_locked+0x15/0x20
[ 60.284299][ T70] ? dev_ingress_queue_create+0x190/0x190
[ 60.284302][ T70] ? generic_xdp_install+0x410/0x410
[ 60.284308][ T70] ops_undo_list+0x714/0x890
[ 60.284316][ T70] ? netns_get+0x110/0x110
[ 60.284320][ T70] ? cleanup_net+0x2d6/0x830
[ 60.284329][ T70] cleanup_net+0x3b2/0x830
[ 60.284335][ T70] ? net_passive_dec+0x190/0x190
[ 60.284341][ T70] ? rcu_is_watching+0x12/0xb0
[ 60.284351][ T70] process_one_work+0xe35/0x1650
[ 60.284363][ T70] ? pwq_dec_nr_in_flight+0x550/0x550
[ 60.284374][ T70] ? assign_work+0x168/0x240
[ 60.284381][ T70] worker_thread+0x591/0xcf0
[ 60.284392][ T70] ? rescuer_thread+0xd10/0xd10
[ 60.284399][ T70] kthread+0x37b/0x5f0
[ 60.284406][ T70] ? kthread_is_per_cpu+0xc0/0xc0
[ 60.284410][ T70] ? ret_from_fork+0x1b/0x270
[ 60.284416][ T70] ? __lock_release+0x5d/0x170
[ 60.284424][ T70] ? rcu_is_watching+0x12/0xb0
[ 60.284429][ T70] ? kthread_is_per_cpu+0xc0/0xc0
[ 60.284432][ T70] ret_from_fork+0x1db/0x270
[ 60.284435][ T70] ? kthread_is_per_cpu+0xc0/0xc0
[ 60.284438][ T70] ret_from_fork_asm+0x11/0x20
[ 60.284447][ T70]
[ 60.284448][ T70]
[ 60.291891][ T70] Allocated by task 435:
[ 60.292039][ T70] kasan_save_stack+0x24/0x40
[ 60.292245][ T70] kasan_save_track+0x14/0x30
[ 60.292449][ T70] __kasan_kmalloc+0x7b/0x90
[ 60.292644][ T70] __kvmalloc_node_noprof+0x2e5/0x8e0
[ 60.292853][ T70] alloc_netdev_mqs+0x7d/0x1370
[ 60.293058][ T70] sit_init_net+0x169/0x550
[ 60.293258][ T70] ops_init+0x189/0x550
[ 60.293412][ T70] setup_net+0xf1/0x380
[ 60.293559][ T70] copy_net_ns+0x21a/0x380
[ 60.293751][ T70] create_new_namespaces+0x35f/0x900
[ 60.293946][ T70] unshare_nsproxy_namespaces+0x89/0x120
[ 60.294140][ T70] ksys_unshare+0x2a3/0x660
[ 60.294346][ T70] __x64_sys_unshare+0x31/0x40
[ 60.294544][ T70] do_syscall_64+0xc1/0xfd0
[ 60.294741][ T70] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 60.294984][ T70]
[ 60.295084][ T70] Freed by task 70:
[ 60.295227][ T70] kasan_save_stack+0x24/0x40
[ 60.295425][ T70] kasan_save_track+0x14/0x30
[ 60.295619][ T70] __kasan_save_free_info+0x3b/0x60
[ 60.295826][ T70] __kasan_slab_free+0x3f/0x60
[ 60.296021][ T70] kfree+0x21d/0x540
[ 60.296167][ T70] device_release+0x9c/0x210
[ 60.296363][ T70] kobject_cleanup+0xfe/0x360
[ 60.296560][ T70] netdev_run_todo+0x81f/0xc60
[ 60.296759][ T70] ops_undo_list+0x714/0x890
[ 60.296955][ T70] cleanup_net+0x3b2/0x830
[ 60.297148][ T70] process_one_work+0xe35/0x1650
[ 60.297351][ T70] worker_thread+0x591/0xcf0
[ 60.297553][ T70] kthread+0x37b/0x5f0
[ 60.297701][ T70] ret_from_fork+0x1db/0x270
[ 60.297896][ T70] ret_from_fork_asm+0x11/0x20
[ 60.298090][ T70]
[ 60.298189][ T70] The buggy address belongs to the object at ffff888009671000
[ 60.298189][ T70] which belongs to the cache kmalloc-4k of size 4096
[ 60.298673][ T70] The buggy address is located 1708 bytes inside of
[ 60.298673][ T70] freed 4096-byte region [ffff888009671000, ffff888009672000)
[ 60.299145][ T70]
[ 60.299246][ T70] The buggy address belongs to the physical page:
[ 60.299480][ T70] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x9670
[ 60.299842][ T70] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[ 60.300142][ T70] flags: 0x80000000000040(head|node=0|zone=1)
[ 60.300391][ T70] page_type: f5(slab)
[ 60.300542][ T70] raw: 0080000000000040 ffff888001043700 ffffea000030de10 ffffea00003fa810
[ 60.300892][ T70] raw: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 60.301236][ T70] head: 0080000000000040 ffff888001043700 ffffea000030de10 ffffea00003fa810
[ 60.301587][ T70] head: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 60.301926][ T70] head: 0080000000000003 ffffea0000259c01 00000000ffffffff 00000000ffffffff
[ 60.302270][ T70] head: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
[ 60.302622][ T70] page dumped because: kasan: bad access detected
[ 60.302866][ T70]
[ 60.302966][ T70] Memory state around the buggy address:
[ 60.303161][ T70] ffff888009671580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 60.303447][ T70] ffff888009671600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 60.303728][ T70] >ffff888009671680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 60.304014][ T70] ^
[ 60.304208][ T70] ffff888009671700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 60.304492][ T70] ffff888009671780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 60.304863][ T70] ==================================================================
[ 60.305324][ T70] Disabling lock debugging due to kernel taint
[ 60.305790][ T70] ------------[ cut here ]------------
[ 60.306163][ T70] refcount_t: underflow; use-after-free.
[ 60.306482][ T70] WARNING: CPU: 1 PID: 70 at lib/refcount.c:28 refcount_warn_saturate+0x16f/0x1b0
[ 60.306928][ T70] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel bridge stp llc 8021q sch_ingress vrf veth
[ 60.307479][ T70] CPU: 1 UID: 0 PID: 70 Comm: kworker/u16:1 Tainted: G B 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 60.308066][ T70] Tainted: [B]=BAD_PAGE
[ 60.308262][ T70] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 60.308579][ T70] Workqueue: netns cleanup_net
[ 60.308848][ T70] RIP: 0010:refcount_warn_saturate+0x16f/0x1b0
[ 60.309188][ T70] 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 45 9d 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
[ 60.310174][ T70] RSP: 0000:ffffc900004b7a08 EFLAGS: 00010282
[ 60.310507][ T70] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[ 60.310883][ T70] RDX: 0000000000000002 RSI: 0000000000000004 RDI: 0000000000000001
[ 60.311261][ T70] RBP: 0000000000000003 R08: 0000000000000000 R09: fffffbfff3bbe134
[ 60.311834][ T70] R10: 0000000000000003 R11: ffffc900004b7580 R12: 0000000000000001
[ 60.312232][ T70] R13: dffffc0000000000 R14: dead000000000122 R15: dead000000000100
[ 60.312625][ T70] FS: 0000000000000000(0000) GS:ffff888097072000(0000) knlGS:0000000000000000
[ 60.313247][ T70] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 60.313584][ T70] CR2: 00007f6939d2d440 CR3: 000000000bc6c005 CR4: 0000000000772ef0
[ 60.314161][ T70] PKRU: 55555554
[ 60.314354][ T70] Call Trace:
[ 60.314551][ T70]
[ 60.314691][ T70] netdev_run_todo+0x5f0/0xc60
[ 60.314951][ T70] ? rtnl_is_locked+0x15/0x20
[ 60.315395][ T70] ? dev_ingress_queue_create+0x190/0x190
[ 60.315666][ T70] ? generic_xdp_install+0x410/0x410
[ 60.315936][ T70] ops_undo_list+0x714/0x890
[ 60.316248][ T70] ? netns_get+0x110/0x110
[ 60.316676][ T70] ? cleanup_net+0x2d6/0x830
[ 60.316936][ T70] cleanup_net+0x3b2/0x830
[ 60.317200][ T70] ? net_passive_dec+0x190/0x190
[ 60.317465][ T70] ? rcu_is_watching+0x12/0xb0
[ 60.317908][ T70] process_one_work+0xe35/0x1650
[ 60.318181][ T70] ? pwq_dec_nr_in_flight+0x550/0x550
[ 60.318442][ T70] ? assign_work+0x168/0x240
[ 60.318694][ T70] worker_thread+0x591/0xcf0
[ 60.319139][ T70] ? rescuer_thread+0xd10/0xd10
[ 60.319393][ T70] kthread+0x37b/0x5f0
[ 60.319602][ T70] ? kthread_is_per_cpu+0xc0/0xc0
[ 60.319874][ T70] ? ret_from_fork+0x1b/0x270
[ 60.320305][ T70] ? __lock_release+0x5d/0x170
[ 60.320596][ T70] ? rcu_is_watching+0x12/0xb0
[ 60.320873][ T70] ? kthread_is_per_cpu+0xc0/0xc0
[ 60.321141][ T70] ret_from_fork+0x1db/0x270
[ 60.321583][ T70] ? kthread_is_per_cpu+0xc0/0xc0
[ 60.321853][ T70] ret_from_fork_asm+0x11/0x20
[ 60.322125][ T70]
[ 60.322315][ T70] irq event stamp: 60993
[ 60.322523][ T70] hardirqs last enabled at (60993): [] finish_task_switch.isra.0+0x245/0x960
[ 60.323172][ T70] hardirqs last disabled at (60992): [] __schedule+0x94a/0x1b10
[ 60.323598][ T70] softirqs last enabled at (60790): [] handle_softirqs+0x352/0x610
[ 60.324251][ T70] softirqs last disabled at (60755): [] irq_exit_rcu+0xab/0x100
[ 60.324711][ T70] ---[ end trace 0000000000000000 ]---
[ 60.617758][ T70] vx100: left allmulticast mode
[ 60.618538][ T70] vx100: left promiscuous mode
[ 60.619174][ T70] br3: port 2(vx100) entered disabled state
[ 60.621764][ T70] w1: left allmulticast mode
[ 60.622814][ T70] w1: left promiscuous mode
[ 60.623502][ T70] br3: port 1(w1) entered disabled state
[ 62.330814][ T613] vx200: left allmulticast mode
[ 62.331118][ T613] vx200: left promiscuous mode
[ 62.331452][ T613] br2: port 1(vx200) entered disabled state
[ 62.574406][ T616] br2: port 2(veth2.20) entered disabled state
[ 62.584918][ T616] veth2.20 (unregistering): left allmulticast mode
[ 62.585302][ T616] veth2: left allmulticast mode
[ 62.585565][ T616] veth2.20 (unregistering): left promiscuous mode
[ 62.585822][ T616] veth2: left promiscuous mode
[ 62.586289][ T616] br2: port 2(veth2.20) entered disabled state
[ 62.907491][ T620] br1: port 2(veth1) entered disabled state
[ 63.022983][ T621] veth1: left allmulticast mode
[ 63.023366][ T621] veth1: left promiscuous mode
[ 63.023846][ T621] br1: port 2(veth1) entered disabled state
[ 63.102294][ T622] vx100: left allmulticast mode
[ 63.102524][ T622] vx100: left promiscuous mode
[ 63.102835][ T622] br1: port 1(vx100) entered disabled state