[ 19.110182][ T300] 8021q: 802.1Q VLAN Support v1.8
[ 23.296961][ T340] ip (340) used greatest stack depth: 24160 bytes left
[ 23.415349][ T342] br1: port 1(vx100) entered blocking state
[ 23.416088][ T342] br1: port 1(vx100) entered disabled state
[ 23.416757][ T342] vx100: entered allmulticast mode
[ 23.420895][ T342] vx100: entered promiscuous mode
[ 23.422079][ T342] br1: port 1(vx100) entered blocking state
[ 23.422709][ T342] br1: port 1(vx100) entered forwarding state
[ 23.667040][ T344] br1: port 2(veth1) entered blocking state
[ 23.667567][ T344] br1: port 2(veth1) entered disabled state
[ 23.668088][ T344] veth1: entered allmulticast mode
[ 23.671915][ T344] veth1: entered promiscuous mode
[ 23.785157][ T38] br1: port 2(veth1) entered blocking state
[ 23.785775][ T38] br1: port 2(veth1) entered forwarding state
[ 24.280636][ T350] br2: port 1(vx200) entered blocking state
[ 24.281454][ T350] br2: port 1(vx200) entered disabled state
[ 24.281917][ T350] vx200: entered allmulticast mode
[ 24.285876][ T350] vx200: entered promiscuous mode
[ 24.287661][ T350] br2: port 1(vx200) entered blocking state
[ 24.288091][ T350] br2: port 1(vx200) entered forwarding state
[ 24.641658][ T353] br2: port 2(veth2.20) entered blocking state
[ 24.642201][ T353] br2: port 2(veth2.20) entered disabled state
[ 24.642669][ T353] veth2.20: entered allmulticast mode
[ 24.643020][ T353] veth2: entered allmulticast mode
[ 24.646588][ T353] veth2.20: entered promiscuous mode
[ 24.646980][ T353] veth2: entered promiscuous mode
[ 24.772582][ T355] br2: port 2(veth2.20) entered blocking state
[ 24.773074][ T355] br2: port 2(veth2.20) entered forwarding state
[ 29.294609][ T401] br3: port 1(w1) entered blocking state
[ 29.295020][ T401] br3: port 1(w1) entered disabled state
[ 29.295437][ T401] w1: entered allmulticast mode
[ 29.298915][ T401] w1: entered promiscuous mode
[ 30.008699][ T407] br3: port 2(vx100) entered blocking state
[ 30.009185][ T407] br3: port 2(vx100) entered disabled state
[ 30.009630][ T407] vx100: entered allmulticast mode
[ 30.013025][ T407] vx100: entered promiscuous mode
[ 30.014394][ T407] br3: port 2(vx100) entered blocking state
[ 30.014808][ T407] br3: port 2(vx100) entered forwarding state
[ 30.877490][ T37] br3: port 1(w1) entered blocking state
[ 30.878171][ T37] br3: port 1(w1) entered forwarding state
[ 34.518031][ T456] br3: port 1(w1) entered blocking state
[ 34.518500][ T456] br3: port 1(w1) entered disabled state
[ 34.519053][ T456] w1: entered allmulticast mode
[ 34.522802][ T456] w1: entered promiscuous mode
[ 35.203408][ T462] br3: port 2(vx200) entered blocking state
[ 35.203872][ T462] br3: port 2(vx200) entered disabled state
[ 35.204326][ T462] vx200: entered allmulticast mode
[ 35.207812][ T462] vx200: entered promiscuous mode
[ 35.209380][ T462] br3: port 2(vx200) entered blocking state
[ 35.209828][ T462] br3: port 2(vx200) entered forwarding state
[ 36.129070][ T46] br3: port 1(w1) entered blocking state
[ 36.129471][ T46] br3: port 1(w1) entered forwarding state
[ 38.577663][ T501] br3: port 3(w1.20) entered blocking state
[ 38.578308][ T501] br3: port 3(w1.20) entered disabled state
[ 38.578803][ T501] w1.20: entered allmulticast mode
[ 38.582249][ T501] w1.20: entered promiscuous mode
[ 39.485704][ T514] br3: port 3(w1.20) entered blocking state
[ 39.486630][ T514] br3: port 3(w1.20) entered forwarding state
[ 50.882736][ T12] w1.20: left allmulticast mode
[ 50.883207][ T12] w1.20: left promiscuous mode
[ 50.883990][ T12] br3: port 3(w1.20) entered disabled state
[ 50.887640][ T12] vx200: left allmulticast mode
[ 50.887979][ T12] vx200: left promiscuous mode
[ 50.888478][ T12] br3: port 2(vx200) entered disabled state
[ 50.891753][ T12] w1: left allmulticast mode
[ 50.892191][ T12] w1: left promiscuous mode
[ 50.892710][ T12] br3: port 1(w1) entered disabled state
[ 50.959394][ T12] ==================================================================
[ 50.959679][ T12] BUG: KASAN: slab-use-after-free in kobject_put+0xbb/0xd0
[ 50.959949][ T12] Read of size 1 at addr ffff88800bfc16ac by task kworker/u16:0/12
[ 50.960212][ T12]
[ 50.960298][ T12] CPU: 1 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 50.960303][ T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 50.960306][ T12] Workqueue: netns cleanup_net
[ 50.960321][ T12] Call Trace:
[ 50.960323][ T12]
[ 50.960327][ T12] dump_stack_lvl+0x82/0xc0
[ 50.960333][ T12] print_address_description.constprop.0+0x2c/0x3a0
[ 50.960347][ T12] ? kobject_put+0xbb/0xd0
[ 50.960351][ T12] print_report+0xb4/0x270
[ 50.960354][ T12] ? kobject_put+0xbb/0xd0
[ 50.960357][ T12] ? kasan_addr_to_slab+0x21/0x70
[ 50.960360][ T12] ? kobject_put+0xbb/0xd0
[ 50.960363][ T12] kasan_report+0xca/0x100
[ 50.960367][ T12] ? kobject_put+0xbb/0xd0
[ 50.960372][ T12] kobject_put+0xbb/0xd0
[ 50.960376][ T12] netdev_run_todo+0x5f0/0xc60
[ 50.960383][ T12] ? rtnl_is_locked+0x15/0x20
[ 50.960389][ T12] ? dev_ingress_queue_create+0x190/0x190
[ 50.960392][ T12] ? generic_xdp_install+0x410/0x410
[ 50.960398][ T12] ops_undo_list+0x714/0x890
[ 50.960404][ T12] ? netns_get+0x110/0x110
[ 50.960406][ T12] ? cleanup_net+0x2d6/0x830
[ 50.960412][ T12] cleanup_net+0x3b2/0x830
[ 50.960415][ T12] ? net_passive_dec+0x190/0x190
[ 50.960421][ T12] ? rcu_is_watching+0x12/0xb0
[ 50.960436][ T12] process_one_work+0xe35/0x1650
[ 50.960448][ T12] ? pwq_dec_nr_in_flight+0x550/0x550
[ 50.960454][ T12] ? assign_work+0x168/0x240
[ 50.960458][ T12] worker_thread+0x591/0xcf0
[ 50.960464][ T12] ? rescuer_thread+0xd10/0xd10
[ 50.960467][ T12] kthread+0x37b/0x5f0
[ 50.960473][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 50.960476][ T12] ? ret_from_fork+0x1b/0x270
[ 50.960484][ T12] ? __lock_release+0x5d/0x170
[ 50.960494][ T12] ? rcu_is_watching+0x12/0xb0
[ 50.960497][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 50.960501][ T12] ret_from_fork+0x1db/0x270
[ 50.960503][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 50.960506][ T12] ret_from_fork_asm+0x11/0x20
[ 50.960516][ T12]
[ 50.960518][ T12]
[ 50.966929][ T12] Allocated by task 435:
[ 50.967052][ T12] kasan_save_stack+0x24/0x40
[ 50.967228][ T12] kasan_save_track+0x14/0x30
[ 50.967413][ T12] __kasan_kmalloc+0x7b/0x90
[ 50.967600][ T12] __kvmalloc_node_noprof+0x2e5/0x8e0
[ 50.967763][ T12] alloc_netdev_mqs+0x7d/0x1370
[ 50.967921][ T12] sit_init_net+0x169/0x550
[ 50.968087][ T12] ops_init+0x189/0x550
[ 50.968218][ T12] setup_net+0xf1/0x380
[ 50.968361][ T12] copy_net_ns+0x21a/0x380
[ 50.968515][ T12] create_new_namespaces+0x35f/0x900
[ 50.968673][ T12] unshare_nsproxy_namespaces+0x89/0x120
[ 50.968836][ T12] ksys_unshare+0x2a3/0x660
[ 50.969010][ T12] __x64_sys_unshare+0x31/0x40
[ 50.969185][ T12] do_syscall_64+0xc1/0xfd0
[ 50.969344][ T12] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 50.969551][ T12]
[ 50.969632][ T12] Freed by task 12:
[ 50.969751][ T12] kasan_save_stack+0x24/0x40
[ 50.969911][ T12] kasan_save_track+0x14/0x30
[ 50.970070][ T12] __kasan_save_free_info+0x3b/0x60
[ 50.970268][ T12] __kasan_slab_free+0x3f/0x60
[ 50.970439][ T12] kfree+0x21d/0x540
[ 50.970560][ T12] device_release+0x9c/0x210
[ 50.970736][ T12] kobject_cleanup+0xfe/0x360
[ 50.970902][ T12] netdev_run_todo+0x81f/0xc60
[ 50.971064][ T12] ops_undo_list+0x714/0x890
[ 50.971244][ T12] cleanup_net+0x3b2/0x830
[ 50.971409][ T12] process_one_work+0xe35/0x1650
[ 50.971569][ T12] worker_thread+0x591/0xcf0
[ 50.971739][ T12] kthread+0x37b/0x5f0
[ 50.971859][ T12] ret_from_fork+0x1db/0x270
[ 50.972020][ T12] ret_from_fork_asm+0x11/0x20
[ 50.972196][ T12]
[ 50.972276][ T12] The buggy address belongs to the object at ffff88800bfc1000
[ 50.972276][ T12] which belongs to the cache kmalloc-4k of size 4096
[ 50.972655][ T12] The buggy address is located 1708 bytes inside of
[ 50.972655][ T12] freed 4096-byte region [ffff88800bfc1000, ffff88800bfc2000)
[ 50.973035][ T12]
[ 50.973124][ T12] The buggy address belongs to the physical page:
[ 50.973318][ T12] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xbfc0
[ 50.973594][ T12] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[ 50.973830][ T12] flags: 0x80000000000040(head|node=0|zone=1)
[ 50.974037][ T12] page_type: f5(slab)
[ 50.974167][ T12] raw: 0080000000000040 ffff888001043700 ffffea000023a210 ffffea00001fb410
[ 50.974460][ T12] raw: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 50.974737][ T12] head: 0080000000000040 ffff888001043700 ffffea000023a210 ffffea00001fb410
[ 50.975016][ T12] head: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 50.975308][ T12] head: 0080000000000003 ffffea00002ff001 00000000ffffffff 00000000ffffffff
[ 50.975585][ T12] head: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
[ 50.975862][ T12] page dumped because: kasan: bad access detected
[ 50.976062][ T12]
[ 50.976151][ T12] Memory state around the buggy address:
[ 50.976301][ T12] ffff88800bfc1580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 50.976532][ T12] ffff88800bfc1600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 50.976757][ T12] >ffff88800bfc1680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 50.976991][ T12] ^
[ 50.977156][ T12] ffff88800bfc1700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 50.977384][ T12] ffff88800bfc1780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 50.977610][ T12] ==================================================================
[ 50.977919][ T12] Disabling lock debugging due to kernel taint
[ 50.978758][ T12] ------------[ cut here ]------------
[ 50.978934][ T12] refcount_t: underflow; use-after-free.
[ 50.979188][ T12] WARNING: CPU: 3 PID: 12 at lib/refcount.c:28 refcount_warn_saturate+0x16f/0x1b0
[ 50.979502][ T12] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel bridge stp llc 8021q sch_ingress vrf veth
[ 50.979877][ T12] CPU: 3 UID: 0 PID: 12 Comm: kworker/u16:0 Tainted: G B 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 50.980298][ T12] Tainted: [B]=BAD_PAGE
[ 50.980439][ T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 50.980668][ T12] Workqueue: netns cleanup_net
[ 50.980862][ T12] RIP: 0010:refcount_warn_saturate+0x16f/0x1b0
[ 50.981109][ 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 e5 b0 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
[ 50.981784][ T12] RSP: 0018:ffffc900000c7a08 EFLAGS: 00010282
[ 50.982026][ T12] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[ 50.982291][ T12] RDX: 0000000000000002 RSI: 0000000000000004 RDI: 0000000000000001
[ 50.982550][ T12] RBP: 0000000000000003 R08: 0000000000000000 R09: fffffbfff62fe134
[ 50.982821][ T12] R10: 0000000000000003 R11: ffffc900000c7580 R12: 0000000000000001
[ 50.983089][ T12] R13: dffffc0000000000 R14: dead000000000122 R15: dead000000000100
[ 50.983355][ T12] FS: 0000000000000000(0000) GS:ffff888083772000(0000) knlGS:0000000000000000
[ 50.983658][ T12] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 50.983872][ T12] CR2: 00007f8599edd270 CR3: 0000000004ade004 CR4: 0000000000772ef0
[ 50.984160][ T12] PKRU: 55555554
[ 50.984302][ T12] Call Trace:
[ 50.984438][ T12]
[ 50.984530][ T12] netdev_run_todo+0x5f0/0xc60
[ 50.984717][ T12] ? rtnl_is_locked+0x15/0x20
[ 50.984894][ T12] ? dev_ingress_queue_create+0x190/0x190
[ 50.985069][ T12] ? generic_xdp_install+0x410/0x410
[ 50.985253][ T12] ops_undo_list+0x714/0x890
[ 50.985434][ T12] ? netns_get+0x110/0x110
[ 50.985613][ T12] ? cleanup_net+0x2d6/0x830
[ 50.985793][ T12] cleanup_net+0x3b2/0x830
[ 50.985964][ T12] ? net_passive_dec+0x190/0x190
[ 50.986146][ T12] ? rcu_is_watching+0x12/0xb0
[ 50.986326][ T12] process_one_work+0xe35/0x1650
[ 50.986517][ T12] ? pwq_dec_nr_in_flight+0x550/0x550
[ 50.986692][ T12] ? assign_work+0x168/0x240
[ 50.986860][ T12] worker_thread+0x591/0xcf0
[ 50.987044][ T12] ? rescuer_thread+0xd10/0xd10
[ 50.987230][ T12] kthread+0x37b/0x5f0
[ 50.987361][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 50.987521][ T12] ? ret_from_fork+0x1b/0x270
[ 50.987695][ T12] ? __lock_release+0x5d/0x170
[ 50.987873][ T12] ? rcu_is_watching+0x12/0xb0
[ 50.988048][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 50.988228][ T12] ret_from_fork+0x1db/0x270
[ 50.988401][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 50.988574][ T12] ret_from_fork_asm+0x11/0x20
[ 50.988760][ T12]
[ 50.988984][ T12] irq event stamp: 46461
[ 50.989121][ T12] hardirqs last enabled at (46461): [] finish_task_switch.isra.0+0x245/0x960
[ 50.989474][ T12] hardirqs last disabled at (46460): [] __schedule+0x94a/0x1b10
[ 50.989795][ T12] softirqs last enabled at (46372): [] handle_softirqs+0x352/0x610
[ 50.990090][ T12] softirqs last disabled at (46025): [] irq_exit_rcu+0xab/0x100
[ 50.990480][ T12] ---[ end trace 0000000000000000 ]---
[ 51.198854][ T12] vx100: left allmulticast mode
[ 51.199767][ T12] vx100: left promiscuous mode
[ 51.200145][ T12] br3: port 2(vx100) entered disabled state
[ 51.201563][ T12] w1: left allmulticast mode
[ 51.201812][ T12] w1: left promiscuous mode
[ 51.202793][ T12] br3: port 1(w1) entered disabled state
[ 52.641047][ T612] vx200: left allmulticast mode
[ 52.641339][ T612] vx200: left promiscuous mode
[ 52.641674][ T612] br2: port 1(vx200) entered disabled state
[ 52.882460][ T615] br2: port 2(veth2.20) entered disabled state
[ 52.883768][ T615] veth2.20 (unregistering): left allmulticast mode
[ 52.884045][ T615] veth2: left allmulticast mode
[ 52.884259][ T615] veth2.20 (unregistering): left promiscuous mode
[ 52.884493][ T615] veth2: left promiscuous mode
[ 52.884902][ T615] br2: port 2(veth2.20) entered disabled state
[ 53.186186][ T619] br1: port 2(veth1) entered disabled state
[ 53.250948][ T621] veth1: left allmulticast mode
[ 53.251527][ T621] veth1: left promiscuous mode
[ 53.251906][ T621] br1: port 2(veth1) entered disabled state
[ 53.321647][ T622] vx100: left allmulticast mode
[ 53.321878][ T622] vx100: left promiscuous mode
[ 53.322212][ T622] br1: port 1(vx100) entered disabled state