[ 23.423327][ T301] 8021q: 802.1Q VLAN Support v1.8
[ 29.229925][ T345] br1: port 1(vx10) entered blocking state
[ 29.230779][ T345] br1: port 1(vx10) entered disabled state
[ 29.231550][ T345] vx10: entered allmulticast mode
[ 29.236579][ T345] vx10: entered promiscuous mode
[ 29.238154][ T345] br1: port 1(vx10) entered blocking state
[ 29.238905][ T345] br1: port 1(vx10) entered forwarding state
[ 29.903571][ T350] br1: port 2(vx20) entered blocking state
[ 29.904091][ T350] br1: port 2(vx20) entered disabled state
[ 29.904585][ T350] vx20: entered allmulticast mode
[ 29.908386][ T350] vx20: entered promiscuous mode
[ 29.909593][ T350] br1: port 2(vx20) entered blocking state
[ 29.910016][ T350] br1: port 2(vx20) entered forwarding state
[ 30.189308][ T352] br1: port 3(veth1) entered blocking state
[ 30.190086][ T352] br1: port 3(veth1) entered disabled state
[ 30.190848][ T352] veth1: entered allmulticast mode
[ 30.196866][ T352] veth1: entered promiscuous mode
[ 30.360827][ T46] br1: port 3(veth1) entered blocking state
[ 30.361739][ T46] br1: port 3(veth1) entered forwarding state
[ 30.761125][ T356] br1: port 4(veth2) entered blocking state
[ 30.761813][ T356] br1: port 4(veth2) entered disabled state
[ 30.762735][ T356] veth2: entered allmulticast mode
[ 30.767620][ T356] veth2: entered promiscuous mode
[ 30.951166][ T36] br1: port 4(veth2) entered blocking state
[ 30.951852][ T36] br1: port 4(veth2) entered forwarding state
[ 37.198398][ T406] br2: port 1(w1) entered blocking state
[ 37.199049][ T406] br2: port 1(w1) entered disabled state
[ 37.200214][ T406] w1: entered allmulticast mode
[ 37.206673][ T406] w1: entered promiscuous mode
[ 38.383086][ T414] br2: port 2(vx10) entered blocking state
[ 38.384277][ T414] br2: port 2(vx10) entered disabled state
[ 38.384998][ T414] vx10: entered allmulticast mode
[ 38.391203][ T414] vx10: entered promiscuous mode
[ 38.393607][ T414] br2: port 2(vx10) entered blocking state
[ 38.394351][ T414] br2: port 2(vx10) entered forwarding state
[ 39.706366][ T421] br2: port 3(vx20) entered blocking state
[ 39.707177][ T421] br2: port 3(vx20) entered disabled state
[ 39.707980][ T421] vx20: entered allmulticast mode
[ 39.714095][ T421] vx20: entered promiscuous mode
[ 39.715554][ T421] br2: port 3(vx20) entered blocking state
[ 39.716331][ T421] br2: port 3(vx20) entered forwarding state
[ 40.914655][ T37] br2: port 1(w1) entered blocking state
[ 40.915427][ T37] br2: port 1(w1) entered forwarding state
[ 44.767902][ T461] br2: port 1(w1) entered blocking state
[ 44.768326][ T461] br2: port 1(w1) entered disabled state
[ 44.768728][ T461] w1: entered allmulticast mode
[ 44.772379][ T461] w1: entered promiscuous mode
[ 45.852276][ T469] br2: port 2(vx10) entered blocking state
[ 45.852833][ T469] br2: port 2(vx10) entered disabled state
[ 45.853471][ T469] vx10: entered allmulticast mode
[ 45.857752][ T469] vx10: entered promiscuous mode
[ 45.858802][ T469] br2: port 2(vx10) entered blocking state
[ 45.859250][ T469] br2: port 2(vx10) entered forwarding state
[ 46.929695][ T476] br2: port 3(vx20) entered blocking state
[ 46.930264][ T476] br2: port 3(vx20) entered disabled state
[ 46.931165][ T476] vx20: entered allmulticast mode
[ 46.934913][ T476] vx20: entered promiscuous mode
[ 46.936113][ T476] br2: port 3(vx20) entered blocking state
[ 46.936678][ T476] br2: port 3(vx20) entered forwarding state
[ 48.287706][ T36] br2: port 1(w1) entered blocking state
[ 48.288496][ T36] br2: port 1(w1) entered forwarding state
[ 68.308135][ T12] vx20: left allmulticast mode
[ 68.308860][ T12] vx20: left promiscuous mode
[ 68.309458][ T12] br2: port 3(vx20) entered disabled state
[ 68.315701][ T12] vx10: left allmulticast mode
[ 68.316079][ T12] vx10: left promiscuous mode
[ 68.318014][ T12] br2: port 2(vx10) entered disabled state
[ 68.321170][ T12] w1: left allmulticast mode
[ 68.321756][ T12] w1: left promiscuous mode
[ 68.322324][ T12] br2: port 1(w1) entered disabled state
[ 68.424605][ T12] ==================================================================
[ 68.424951][ T12] BUG: KASAN: slab-use-after-free in kobject_put+0xbb/0xd0
[ 68.425273][ T12] Read of size 1 at addr ffff888011f116ac by task kworker/u16:0/12
[ 68.425567][ T12]
[ 68.425679][ T12] CPU: 1 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 68.425686][ T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 68.425689][ T12] Workqueue: netns cleanup_net
[ 68.425699][ T12] Call Trace:
[ 68.425702][ T12]
[ 68.425705][ T12] dump_stack_lvl+0x82/0xc0
[ 68.425713][ T12] print_address_description.constprop.0+0x2c/0x3a0
[ 68.425721][ T12] ? kobject_put+0xbb/0xd0
[ 68.425727][ T12] print_report+0xb4/0x270
[ 68.425732][ T12] ? kobject_put+0xbb/0xd0
[ 68.425737][ T12] ? kasan_addr_to_slab+0x21/0x70
[ 68.425742][ T12] ? kobject_put+0xbb/0xd0
[ 68.425746][ T12] kasan_report+0xca/0x100
[ 68.425750][ T12] ? kobject_put+0xbb/0xd0
[ 68.425755][ T12] kobject_put+0xbb/0xd0
[ 68.425759][ T12] netdev_run_todo+0x5f0/0xc60
[ 68.425764][ T12] ? rtnl_is_locked+0x15/0x20
[ 68.425769][ T12] ? dev_ingress_queue_create+0x190/0x190
[ 68.425773][ T12] ? generic_xdp_install+0x410/0x410
[ 68.425779][ T12] ops_undo_list+0x714/0x890
[ 68.425784][ T12] ? netns_get+0x110/0x110
[ 68.425787][ T12] ? cleanup_net+0x2d6/0x830
[ 68.425793][ T12] cleanup_net+0x3b2/0x830
[ 68.425797][ T12] ? net_passive_dec+0x190/0x190
[ 68.425801][ T12] ? rcu_is_watching+0x12/0xb0
[ 68.425809][ T12] process_one_work+0xe35/0x1650
[ 68.425818][ T12] ? pwq_dec_nr_in_flight+0x550/0x550
[ 68.425824][ T12] ? assign_work+0x168/0x240
[ 68.425829][ T12] worker_thread+0x591/0xcf0
[ 68.425834][ T12] ? rescuer_thread+0xd10/0xd10
[ 68.425838][ T12] kthread+0x37b/0x5f0
[ 68.425843][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 68.425845][ T12] ? ret_from_fork+0x1b/0x270
[ 68.425850][ T12] ? __lock_release+0x5d/0x170
[ 68.425857][ T12] ? rcu_is_watching+0x12/0xb0
[ 68.425860][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 68.425863][ T12] ret_from_fork+0x1db/0x270
[ 68.425866][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 68.425868][ T12] ret_from_fork_asm+0x11/0x20
[ 68.425878][ T12]
[ 68.425879][ T12]
[ 68.433177][ T12] Allocated by task 440:
[ 68.433320][ T12] kasan_save_stack+0x24/0x40
[ 68.433517][ T12] kasan_save_track+0x14/0x30
[ 68.433715][ T12] __kasan_kmalloc+0x7b/0x90
[ 68.433900][ T12] __kvmalloc_node_noprof+0x2e5/0x8e0
[ 68.434095][ T12] alloc_netdev_mqs+0x7d/0x1370
[ 68.434288][ T12] sit_init_net+0x169/0x550
[ 68.434491][ T12] ops_init+0x189/0x550
[ 68.434631][ T12] setup_net+0xf1/0x380
[ 68.434773][ T12] copy_net_ns+0x21a/0x380
[ 68.434967][ T12] create_new_namespaces+0x35f/0x900
[ 68.435144][ T12] unshare_nsproxy_namespaces+0x89/0x120
[ 68.435345][ T12] ksys_unshare+0x2a3/0x660
[ 68.435530][ T12] __x64_sys_unshare+0x31/0x40
[ 68.435712][ T12] do_syscall_64+0xc1/0xfd0
[ 68.435906][ T12] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 68.436151][ T12]
[ 68.436253][ T12] Freed by task 12:
[ 68.436395][ T12] kasan_save_stack+0x24/0x40
[ 68.436585][ T12] kasan_save_track+0x14/0x30
[ 68.436787][ T12] __kasan_save_free_info+0x3b/0x60
[ 68.436969][ T12] __kasan_slab_free+0x3f/0x60
[ 68.437148][ T12] kfree+0x21d/0x540
[ 68.437294][ T12] device_release+0x9c/0x210
[ 68.437536][ T12] kobject_cleanup+0xfe/0x360
[ 68.437722][ T12] netdev_run_todo+0x81f/0xc60
[ 68.437906][ T12] ops_undo_list+0x714/0x890
[ 68.438093][ T12] cleanup_net+0x3b2/0x830
[ 68.438284][ T12] process_one_work+0xe35/0x1650
[ 68.438525][ T12] worker_thread+0x591/0xcf0
[ 68.438705][ T12] kthread+0x37b/0x5f0
[ 68.438841][ T12] ret_from_fork+0x1db/0x270
[ 68.439018][ T12] ret_from_fork_asm+0x11/0x20
[ 68.439222][ T12]
[ 68.439323][ T12] The buggy address belongs to the object at ffff888011f11000
[ 68.439323][ T12] which belongs to the cache kmalloc-4k of size 4096
[ 68.439806][ T12] The buggy address is located 1708 bytes inside of
[ 68.439806][ T12] freed 4096-byte region [ffff888011f11000, ffff888011f12000)
[ 68.440255][ T12]
[ 68.440360][ T12] The buggy address belongs to the physical page:
[ 68.440591][ T12] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x11f10
[ 68.440937][ T12] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[ 68.441224][ T12] flags: 0x80000000000040(head|node=0|zone=1)
[ 68.441462][ T12] page_type: f5(slab)
[ 68.441604][ T12] raw: 0080000000000040 ffff888001043700 ffffea00001ff210 ffffea000057ba10
[ 68.441942][ T12] raw: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 68.442264][ T12] head: 0080000000000040 ffff888001043700 ffffea00001ff210 ffffea000057ba10
[ 68.442607][ T12] head: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 68.442936][ T12] head: 0080000000000003 ffffea000047c401 00000000ffffffff 00000000ffffffff
[ 68.443258][ T12] head: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
[ 68.443586][ T12] page dumped because: kasan: bad access detected
[ 68.443845][ T12]
[ 68.443937][ T12] Memory state around the buggy address:
[ 68.444111][ T12] ffff888011f11580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 68.444393][ T12] ffff888011f11600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 68.444665][ T12] >ffff888011f11680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 68.444939][ T12] ^
[ 68.445111][ T12] ffff888011f11700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 68.445387][ T12] ffff888011f11780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 68.445660][ T12] ==================================================================
[ 68.446025][ T12] Disabling lock debugging due to kernel taint
[ 68.446584][ T12] ------------[ cut here ]------------
[ 68.446788][ T12] refcount_t: underflow; use-after-free.
[ 68.446999][ T12] WARNING: CPU: 0 PID: 12 at lib/refcount.c:28 refcount_warn_saturate+0x16f/0x1b0
[ 68.447344][ T12] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel bridge stp llc 8021q sch_ingress vrf veth
[ 68.447785][ T12] CPU: 0 UID: 0 PID: 12 Comm: kworker/u16:0 Tainted: G B 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 68.448185][ T12] Tainted: [B]=BAD_PAGE
[ 68.448346][ T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 68.448619][ T12] Workqueue: netns cleanup_net
[ 68.448841][ T12] RIP: 0010:refcount_warn_saturate+0x16f/0x1b0
[ 68.449069][ T12] 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 85 9b 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
[ 68.449769][ T12] RSP: 0000:ffffc900000c7a08 EFLAGS: 00010282
[ 68.449998][ T12] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[ 68.450258][ T12] RDX: 0000000000000002 RSI: 0000000000000004 RDI: 0000000000000001
[ 68.450579][ T12] RBP: 0000000000000003 R08: 0000000000000000 R09: fffffbfff383e134
[ 68.450868][ T12] R10: 0000000000000003 R11: ffffc900000c7580 R12: 0000000000000001
[ 68.451136][ T12] R13: dffffc0000000000 R14: dead000000000122 R15: dead000000000100
[ 68.451429][ T12] FS: 0000000000000000(0000) GS:ffff888098bf2000(0000) knlGS:0000000000000000
[ 68.451770][ T12] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 68.451999][ T12] CR2: 00007f536fd8aff0 CR3: 0000000015ca9006 CR4: 0000000000772ef0
[ 68.452292][ T12] PKRU: 55555554
[ 68.452433][ T12] Call Trace:
[ 68.452575][ T12]
[ 68.452669][ T12] netdev_run_todo+0x5f0/0xc60
[ 68.452864][ T12] ? rtnl_is_locked+0x15/0x20
[ 68.453054][ T12] ? dev_ingress_queue_create+0x190/0x190
[ 68.453237][ T12] ? generic_xdp_install+0x410/0x410
[ 68.453495][ T12] ops_undo_list+0x714/0x890
[ 68.453772][ T12] ? netns_get+0x110/0x110
[ 68.454026][ T12] ? cleanup_net+0x2d6/0x830
[ 68.454312][ T12] cleanup_net+0x3b2/0x830
[ 68.454587][ T12] ? net_passive_dec+0x190/0x190
[ 68.454827][ T12] ? rcu_is_watching+0x12/0xb0
[ 68.455119][ T12] process_one_work+0xe35/0x1650
[ 68.455408][ T12] ? pwq_dec_nr_in_flight+0x550/0x550
[ 68.455694][ T12] ? assign_work+0x168/0x240
[ 68.455972][ T12] worker_thread+0x591/0xcf0
[ 68.456251][ T12] ? rescuer_thread+0xd10/0xd10
[ 68.456536][ T12] kthread+0x37b/0x5f0
[ 68.456730][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 68.457004][ T12] ? ret_from_fork+0x1b/0x270
[ 68.457296][ T12] ? __lock_release+0x5d/0x170
[ 68.457573][ T12] ? rcu_is_watching+0x12/0xb0
[ 68.457849][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 68.458122][ T12] ret_from_fork+0x1db/0x270
[ 68.458404][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 68.458671][ T12] ret_from_fork_asm+0x11/0x20
[ 68.458956][ T12]
[ 68.459165][ T12] irq event stamp: 57717
[ 68.459387][ T12] hardirqs last enabled at (57717): [] finish_task_switch.isra.0+0x245/0x960
[ 68.459948][ T12] hardirqs last disabled at (57716): [] __schedule+0x94a/0x1b10
[ 68.460446][ T12] softirqs last enabled at (56640): [] br_multicast_dev_del+0x15e/0x240 [bridge]
[ 68.461061][ T12] softirqs last disabled at (56638): [] br_multicast_dev_del+0x7e/0x240 [bridge]
[ 68.461695][ T12] ---[ end trace 0000000000000000 ]---
[ 68.703452][ T12] vx20: left allmulticast mode
[ 68.703780][ T12] vx20: left promiscuous mode
[ 68.704118][ T12] br2: port 3(vx20) entered disabled state
[ 68.705901][ T12] vx10: left allmulticast mode
[ 68.706119][ T12] vx10: left promiscuous mode
[ 68.706489][ T12] br2: port 2(vx10) entered disabled state
[ 68.709040][ T12] w1: left allmulticast mode
[ 68.709296][ T12] w1: left promiscuous mode
[ 68.709627][ T12] br2: port 1(w1) entered disabled state
[ 70.902357][ T616] br1: port 4(veth2) entered disabled state
[ 71.017208][ T617] veth2: left allmulticast mode
[ 71.017606][ T617] veth2: left promiscuous mode
[ 71.018147][ T617] br1: port 4(veth2) entered disabled state
[ 71.261569][ T620] br1: port 3(veth1) entered disabled state
[ 71.342808][ T621] veth1: left allmulticast mode
[ 71.343062][ T621] veth1: left promiscuous mode
[ 71.343414][ T621] br1: port 3(veth1) entered disabled state
[ 71.497068][ T623] vx20: left allmulticast mode
[ 71.497359][ T623] vx20: left promiscuous mode
[ 71.497741][ T623] br1: port 2(vx20) entered disabled state
[ 71.866399][ T627] vx10: left allmulticast mode
[ 71.866703][ T627] vx10: left promiscuous mode
[ 71.867124][ T627] br1: port 1(vx10) entered disabled state