[ 15.754826][ T272] ip (272) used greatest stack depth: 23888 bytes left
[ 18.572302][ T300] 8021q: 802.1Q VLAN Support v1.8
[ 23.010908][ T344] br1: port 1(vx10) entered blocking state
[ 23.011495][ T344] br1: port 1(vx10) entered disabled state
[ 23.012200][ T344] vx10: entered allmulticast mode
[ 23.016055][ T344] vx10: entered promiscuous mode
[ 23.016978][ T344] br1: port 1(vx10) entered blocking state
[ 23.017469][ T344] br1: port 1(vx10) entered forwarding state
[ 23.472291][ T349] br1: port 2(vx20) entered blocking state
[ 23.472758][ T349] br1: port 2(vx20) entered disabled state
[ 23.473203][ T349] vx20: entered allmulticast mode
[ 23.477367][ T349] vx20: entered promiscuous mode
[ 23.478396][ T349] br1: port 2(vx20) entered blocking state
[ 23.478829][ T349] br1: port 2(vx20) entered forwarding state
[ 23.689555][ T351] br1: port 3(veth1) entered blocking state
[ 23.689978][ T351] br1: port 3(veth1) entered disabled state
[ 23.690407][ T351] veth1: entered allmulticast mode
[ 23.694157][ T351] veth1: entered promiscuous mode
[ 23.802214][ T37] br1: port 3(veth1) entered blocking state
[ 23.802782][ T37] br1: port 3(veth1) entered forwarding state
[ 24.133933][ T355] br1: port 4(veth2) entered blocking state
[ 24.134366][ T355] br1: port 4(veth2) entered disabled state
[ 24.135003][ T355] veth2: entered allmulticast mode
[ 24.138303][ T355] veth2: entered promiscuous mode
[ 24.251900][ T46] br1: port 4(veth2) entered blocking state
[ 24.252350][ T46] br1: port 4(veth2) entered forwarding state
[ 28.948124][ T406] br2: port 1(w1) entered blocking state
[ 28.948500][ T406] br2: port 1(w1) entered disabled state
[ 28.948892][ T406] w1: entered allmulticast mode
[ 28.952310][ T406] w1: entered promiscuous mode
[ 29.815674][ T414] br2: port 2(vx10) entered blocking state
[ 29.816139][ T414] br2: port 2(vx10) entered disabled state
[ 29.816582][ T414] vx10: entered allmulticast mode
[ 29.820263][ T414] vx10: entered promiscuous mode
[ 29.821205][ T414] br2: port 2(vx10) entered blocking state
[ 29.821640][ T414] br2: port 2(vx10) entered forwarding state
[ 30.634530][ T421] br2: port 3(vx20) entered blocking state
[ 30.635010][ T421] br2: port 3(vx20) entered disabled state
[ 30.635478][ T421] vx20: entered allmulticast mode
[ 30.638915][ T421] vx20: entered promiscuous mode
[ 30.650204][ T421] br2: port 3(vx20) entered blocking state
[ 30.650718][ T421] br2: port 3(vx20) entered forwarding state
[ 31.664824][ T37] br2: port 1(w1) entered blocking state
[ 31.665425][ T37] br2: port 1(w1) entered forwarding state
[ 34.749037][ T461] br2: port 1(w1) entered blocking state
[ 34.749520][ T461] br2: port 1(w1) entered disabled state
[ 34.749949][ T461] w1: entered allmulticast mode
[ 34.753722][ T461] w1: entered promiscuous mode
[ 35.737083][ T469] br2: port 2(vx10) entered blocking state
[ 35.737630][ T469] br2: port 2(vx10) entered disabled state
[ 35.738141][ T469] vx10: entered allmulticast mode
[ 35.742026][ T469] vx10: entered promiscuous mode
[ 35.743144][ T469] br2: port 2(vx10) entered blocking state
[ 35.743662][ T469] br2: port 2(vx10) entered forwarding state
[ 36.591051][ T476] br2: port 3(vx20) entered blocking state
[ 36.591490][ T476] br2: port 3(vx20) entered disabled state
[ 36.591927][ T476] vx20: entered allmulticast mode
[ 36.596214][ T476] vx20: entered promiscuous mode
[ 36.597025][ T476] br2: port 3(vx20) entered blocking state
[ 36.597440][ T476] br2: port 3(vx20) entered forwarding state
[ 37.589516][ T37] br2: port 1(w1) entered blocking state
[ 37.589924][ T37] br2: port 1(w1) entered forwarding state
[ 55.558829][ T12] vx20: left allmulticast mode
[ 55.559276][ T12] vx20: left promiscuous mode
[ 55.560243][ T12] br2: port 3(vx20) entered disabled state
[ 55.565749][ T12] vx10: left allmulticast mode
[ 55.566077][ T12] vx10: left promiscuous mode
[ 55.566729][ T12] br2: port 2(vx10) entered disabled state
[ 55.572216][ T12] w1: left allmulticast mode
[ 55.576493][ T12] w1: left promiscuous mode
[ 55.577027][ T12] br2: port 1(w1) entered disabled state
[ 55.659643][ T12] ==================================================================
[ 55.659943][ T12] BUG: KASAN: slab-use-after-free in kobject_put+0xbb/0xd0
[ 55.660213][ T12] Read of size 1 at addr ffff88800f8716ac by task kworker/u16:0/12
[ 55.660479][ T12]
[ 55.660570][ T12] CPU: 0 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 55.660576][ T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 55.660578][ T12] Workqueue: netns cleanup_net
[ 55.660588][ T12] Call Trace:
[ 55.660590][ T12]
[ 55.660593][ T12] dump_stack_lvl+0x82/0xc0
[ 55.660599][ T12] print_address_description.constprop.0+0x2c/0x3a0
[ 55.660606][ T12] ? kobject_put+0xbb/0xd0
[ 55.660610][ T12] print_report+0xb4/0x270
[ 55.660613][ T12] ? kobject_put+0xbb/0xd0
[ 55.660616][ T12] ? kasan_addr_to_slab+0x21/0x70
[ 55.660619][ T12] ? kobject_put+0xbb/0xd0
[ 55.660623][ T12] kasan_report+0xca/0x100
[ 55.660626][ T12] ? kobject_put+0xbb/0xd0
[ 55.660631][ T12] kobject_put+0xbb/0xd0
[ 55.660635][ T12] netdev_run_todo+0x5f0/0xc60
[ 55.660639][ T12] ? rtnl_is_locked+0x15/0x20
[ 55.660645][ T12] ? dev_ingress_queue_create+0x190/0x190
[ 55.660648][ T12] ? generic_xdp_install+0x410/0x410
[ 55.660654][ T12] ops_undo_list+0x714/0x890
[ 55.660660][ T12] ? netns_get+0x110/0x110
[ 55.660662][ T12] ? cleanup_net+0x2d6/0x830
[ 55.660668][ T12] cleanup_net+0x3b2/0x830
[ 55.660671][ T12] ? net_passive_dec+0x190/0x190
[ 55.660676][ T12] ? rcu_is_watching+0x12/0xb0
[ 55.660684][ T12] process_one_work+0xe35/0x1650
[ 55.660693][ T12] ? pwq_dec_nr_in_flight+0x550/0x550
[ 55.660699][ T12] ? assign_work+0x168/0x240
[ 55.660703][ T12] worker_thread+0x591/0xcf0
[ 55.660708][ T12] ? rescuer_thread+0xd10/0xd10
[ 55.660712][ T12] kthread+0x37b/0x5f0
[ 55.660716][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 55.660719][ T12] ? ret_from_fork+0x1b/0x270
[ 55.660723][ T12] ? __lock_release+0x5d/0x170
[ 55.660730][ T12] ? rcu_is_watching+0x12/0xb0
[ 55.660733][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 55.660737][ T12] ret_from_fork+0x1db/0x270
[ 55.660739][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 55.660742][ T12] ret_from_fork_asm+0x11/0x20
[ 55.660751][ T12]
[ 55.660752][ T12]
[ 55.668120][ T12] Allocated by task 440:
[ 55.668254][ T12] kasan_save_stack+0x24/0x40
[ 55.668436][ T12] kasan_save_track+0x14/0x30
[ 55.668616][ T12] __kasan_kmalloc+0x7b/0x90
[ 55.668783][ T12] __kvmalloc_node_noprof+0x2e5/0x8e0
[ 55.668964][ T12] alloc_netdev_mqs+0x7d/0x1370
[ 55.669138][ T12] sit_init_net+0x169/0x550
[ 55.669309][ T12] ops_init+0x189/0x550
[ 55.669439][ T12] setup_net+0xf1/0x380
[ 55.669567][ T12] copy_net_ns+0x21a/0x380
[ 55.669736][ T12] create_new_namespaces+0x35f/0x900
[ 55.669926][ T12] unshare_nsproxy_namespaces+0x89/0x120
[ 55.670098][ T12] ksys_unshare+0x2a3/0x660
[ 55.670269][ T12] __x64_sys_unshare+0x31/0x40
[ 55.670437][ T12] do_syscall_64+0xc1/0xfd0
[ 55.670612][ T12] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 55.670832][ T12]
[ 55.670920][ T12] Freed by task 12:
[ 55.671054][ T12] kasan_save_stack+0x24/0x40
[ 55.671225][ T12] kasan_save_track+0x14/0x30
[ 55.671399][ T12] __kasan_save_free_info+0x3b/0x60
[ 55.671570][ T12] __kasan_slab_free+0x3f/0x60
[ 55.671739][ T12] kfree+0x21d/0x540
[ 55.671874][ T12] device_release+0x9c/0x210
[ 55.672047][ T12] kobject_cleanup+0xfe/0x360
[ 55.672220][ T12] netdev_run_todo+0x81f/0xc60
[ 55.672390][ T12] ops_undo_list+0x714/0x890
[ 55.672569][ T12] cleanup_net+0x3b2/0x830
[ 55.672840][ T12] process_one_work+0xe35/0x1650
[ 55.673005][ T12] worker_thread+0x591/0xcf0
[ 55.673171][ T12] kthread+0x37b/0x5f0
[ 55.673300][ T12] ret_from_fork+0x1db/0x270
[ 55.673494][ T12] ret_from_fork_asm+0x11/0x20
[ 55.673668][ T12]
[ 55.673756][ T12] The buggy address belongs to the object at ffff88800f871000
[ 55.673756][ T12] which belongs to the cache kmalloc-4k of size 4096
[ 55.674197][ T12] The buggy address is located 1708 bytes inside of
[ 55.674197][ T12] freed 4096-byte region [ffff88800f871000, ffff88800f872000)
[ 55.674867][ T12]
[ 55.674991][ T12] The buggy address belongs to the physical page:
[ 55.675287][ T12] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xf870
[ 55.675611][ T12] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[ 55.675868][ T12] flags: 0x80000000000040(head|node=0|zone=1)
[ 55.676179][ T12] page_type: f5(slab)
[ 55.676347][ T12] raw: 0080000000000040 ffff888001043700 ffffea00001d5010 ffffea00001d5610
[ 55.676695][ T12] raw: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 55.677003][ T12] head: 0080000000000040 ffff888001043700 ffffea00001d5010 ffffea00001d5610
[ 55.677307][ T12] head: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 55.677721][ T12] head: 0080000000000003 ffffea00003e1c01 00000000ffffffff 00000000ffffffff
[ 55.678088][ T12] head: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
[ 55.678382][ T12] page dumped because: kasan: bad access detected
[ 55.678755][ T12]
[ 55.678860][ T12] Memory state around the buggy address:
[ 55.679074][ T12] ffff88800f871580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 55.679427][ T12] ffff88800f871600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 55.679719][ T12] >ffff88800f871680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 55.679965][ T12] ^
[ 55.680135][ T12] ffff88800f871700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 55.680433][ T12] ffff88800f871780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 55.680679][ T12] ==================================================================
[ 55.680985][ T12] Disabling lock debugging due to kernel taint
[ 55.681242][ T12] ------------[ cut here ]------------
[ 55.681413][ T12] refcount_t: underflow; use-after-free.
[ 55.681828][ T12] WARNING: CPU: 0 PID: 12 at lib/refcount.c:28 refcount_warn_saturate+0x16f/0x1b0
[ 55.682336][ T12] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel bridge stp llc 8021q sch_ingress vrf veth
[ 55.683311][ T12] CPU: 0 UID: 0 PID: 12 Comm: kworker/u16:0 Tainted: G B 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 55.683758][ T12] Tainted: [B]=BAD_PAGE
[ 55.683887][ T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 55.684099][ T12] Workqueue: netns cleanup_net
[ 55.684291][ T12] RIP: 0010:refcount_warn_saturate+0x16f/0x1b0
[ 55.684533][ 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
[ 55.685145][ T12] RSP: 0018:ffffc900000c7a08 EFLAGS: 00010282
[ 55.685358][ T12] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[ 55.685646][ T12] RDX: 0000000000000002 RSI: 0000000000000004 RDI: 0000000000000001
[ 55.685980][ T12] RBP: 0000000000000003 R08: 0000000000000000 R09: fffffbfff383e134
[ 55.686279][ T12] R10: 0000000000000003 R11: ffffc900000c7580 R12: 0000000000000001
[ 55.686618][ T12] R13: dffffc0000000000 R14: dead000000000122 R15: dead000000000100
[ 55.687024][ T12] FS: 0000000000000000(0000) GS:ffff888098bf2000(0000) knlGS:0000000000000000
[ 55.687409][ T12] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 55.687701][ T12] CR2: 000055e6acf40438 CR3: 000000002ab35005 CR4: 0000000000772ef0
[ 55.687961][ T12] PKRU: 55555554
[ 55.688089][ T12] Call Trace:
[ 55.688222][ T12]
[ 55.688357][ T12] netdev_run_todo+0x5f0/0xc60
[ 55.688644][ T12] ? rtnl_is_locked+0x15/0x20
[ 55.688813][ T12] ? dev_ingress_queue_create+0x190/0x190
[ 55.688981][ T12] ? generic_xdp_install+0x410/0x410
[ 55.689244][ T12] ops_undo_list+0x714/0x890
[ 55.689420][ T12] ? netns_get+0x110/0x110
[ 55.689767][ T12] ? cleanup_net+0x2d6/0x830
[ 55.689954][ T12] cleanup_net+0x3b2/0x830
[ 55.690262][ T12] ? net_passive_dec+0x190/0x190
[ 55.690473][ T12] ? rcu_is_watching+0x12/0xb0
[ 55.690790][ T12] process_one_work+0xe35/0x1650
[ 55.690985][ T12] ? pwq_dec_nr_in_flight+0x550/0x550
[ 55.691202][ T12] ? assign_work+0x168/0x240
[ 55.691421][ T12] worker_thread+0x591/0xcf0
[ 55.691648][ T12] ? rescuer_thread+0xd10/0xd10
[ 55.691841][ T12] kthread+0x37b/0x5f0
[ 55.691975][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 55.692138][ T12] ? ret_from_fork+0x1b/0x270
[ 55.692316][ T12] ? __lock_release+0x5d/0x170
[ 55.692507][ T12] ? rcu_is_watching+0x12/0xb0
[ 55.692682][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 55.692848][ T12] ret_from_fork+0x1db/0x270
[ 55.693012][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 55.693176][ T12] ret_from_fork_asm+0x11/0x20
[ 55.693636][ T12]
[ 55.693770][ T12] irq event stamp: 64757
[ 55.693903][ T12] hardirqs last enabled at (64757): [] irqentry_exit+0x3b/0x80
[ 55.694307][ T12] hardirqs last disabled at (64756): [] handle_softirqs+0x47f/0x610
[ 55.694726][ T12] softirqs last enabled at (64122): [] handle_softirqs+0x352/0x610
[ 55.695094][ T12] softirqs last disabled at (64117): [] irq_exit_rcu+0xab/0x100
[ 55.695562][ T12] ---[ end trace 0000000000000000 ]---
[ 55.874749][ T12] vx20: left allmulticast mode
[ 55.875060][ T12] vx20: left promiscuous mode
[ 55.875446][ T12] br2: port 3(vx20) entered disabled state
[ 55.879071][ T12] vx10: left allmulticast mode
[ 55.879436][ T12] vx10: left promiscuous mode
[ 55.879948][ T12] br2: port 2(vx10) entered disabled state
[ 55.882826][ T12] w1: left allmulticast mode
[ 55.883251][ T12] w1: left promiscuous mode
[ 55.884299][ T12] br2: port 1(w1) entered disabled state
[ 57.617838][ T617] br1: port 4(veth2) entered disabled state
[ 57.694909][ T618] veth2: left allmulticast mode
[ 57.695138][ T618] veth2: left promiscuous mode
[ 57.695485][ T618] br1: port 4(veth2) entered disabled state
[ 57.916716][ T621] br1: port 3(veth1) entered disabled state
[ 58.005770][ T622] veth1: left allmulticast mode
[ 58.006120][ T622] veth1: left promiscuous mode
[ 58.008704][ T622] br1: port 3(veth1) entered disabled state
[ 58.152866][ T624] vx20: left allmulticast mode
[ 58.153102][ T624] vx20: left promiscuous mode
[ 58.153539][ T624] br1: port 2(vx20) entered disabled state
[ 58.463505][ T628] vx10: left allmulticast mode
[ 58.463731][ T628] vx10: left promiscuous mode
[ 58.464044][ T628] br1: port 1(vx10) entered disabled state