[ 18.430810][ T250] ip (250) used greatest stack depth: 23760 bytes left
[ 27.316253][ T325] br1: port 1(vx1) entered blocking state
[ 27.317127][ T325] br1: port 1(vx1) entered disabled state
[ 27.317675][ T325] vx1: entered allmulticast mode
[ 27.322019][ T325] vx1: entered promiscuous mode
[ 27.324607][ T325] br1: port 1(vx1) entered blocking state
[ 27.325209][ T325] br1: port 1(vx1) entered forwarding state
[ 27.514444][ T326] br1: port 2(veth1) entered blocking state
[ 27.515754][ T326] br1: port 2(veth1) entered disabled state
[ 27.516575][ T326] veth1: entered allmulticast mode
[ 27.522772][ T326] veth1: entered promiscuous mode
[ 27.696777][ T45] br1: port 2(veth1) entered blocking state
[ 27.697437][ T45] br1: port 2(veth1) entered forwarding state
[ 27.846125][ T328] br1: port 3(veth2) entered blocking state
[ 27.846936][ T328] br1: port 3(veth2) entered disabled state
[ 27.847428][ T328] veth2: entered allmulticast mode
[ 27.850986][ T328] veth2: entered promiscuous mode
[ 27.998664][ T38] br1: port 3(veth2) entered blocking state
[ 27.999418][ T38] br1: port 3(veth2) entered forwarding state
[ 33.597105][ T375] br2: port 1(w1) entered blocking state
[ 33.597517][ T375] br2: port 1(w1) entered disabled state
[ 33.597923][ T375] w1: entered allmulticast mode
[ 33.601368][ T375] w1: entered promiscuous mode
[ 34.493469][ T381] br2: port 2(vx2) entered blocking state
[ 34.493864][ T381] br2: port 2(vx2) entered disabled state
[ 34.494322][ T381] vx2: entered allmulticast mode
[ 34.498217][ T381] vx2: entered promiscuous mode
[ 34.511027][ T381] br2: port 2(vx2) entered blocking state
[ 34.511467][ T381] br2: port 2(vx2) entered forwarding state
[ 35.742051][ T45] br2: port 1(w1) entered blocking state
[ 35.743005][ T45] br2: port 1(w1) entered forwarding state
[ 38.710130][ T414] br2: port 1(w1) entered blocking state
[ 38.710610][ T414] br2: port 1(w1) entered disabled state
[ 38.711128][ T414] w1: entered allmulticast mode
[ 38.717038][ T414] w1: entered promiscuous mode
[ 39.509500][ T420] br2: port 2(vx2) entered blocking state
[ 39.510054][ T420] br2: port 2(vx2) entered disabled state
[ 39.510560][ T420] vx2: entered allmulticast mode
[ 39.514876][ T420] vx2: entered promiscuous mode
[ 39.516405][ T420] br2: port 2(vx2) entered blocking state
[ 39.516902][ T420] br2: port 2(vx2) entered forwarding state
[ 40.751367][ T37] br2: port 1(w1) entered blocking state
[ 40.751829][ T37] br2: port 1(w1) entered forwarding state
[ 54.819311][ T12] vx2: left allmulticast mode
[ 54.819813][ T12] vx2: left promiscuous mode
[ 54.820428][ T12] br2: port 2(vx2) entered disabled state
[ 54.825201][ T12] w1: left allmulticast mode
[ 54.825590][ T12] w1: left promiscuous mode
[ 54.826178][ T12] br2: port 1(w1) entered disabled state
[ 54.916496][ T12] ==================================================================
[ 54.916953][ T12] BUG: KASAN: slab-use-after-free in kobject_put+0xbb/0xd0
[ 54.917375][ T12] Read of size 1 at addr ffff888005c396ac by task kworker/u16:0/12
[ 54.917779][ T12]
[ 54.917922][ T12] CPU: 3 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 54.917932][ T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 54.917937][ T12] Workqueue: netns cleanup_net
[ 54.917948][ T12] Call Trace:
[ 54.917951][ T12]
[ 54.917955][ T12] dump_stack_lvl+0x82/0xc0
[ 54.917964][ T12] print_address_description.constprop.0+0x2c/0x3a0
[ 54.917973][ T12] ? kobject_put+0xbb/0xd0
[ 54.917979][ T12] print_report+0xb4/0x270
[ 54.917984][ T12] ? kobject_put+0xbb/0xd0
[ 54.917988][ T12] ? kasan_addr_to_slab+0x21/0x70
[ 54.917993][ T12] ? kobject_put+0xbb/0xd0
[ 54.917998][ T12] kasan_report+0xca/0x100
[ 54.918005][ T12] ? kobject_put+0xbb/0xd0
[ 54.918014][ T12] kobject_put+0xbb/0xd0
[ 54.918021][ T12] netdev_run_todo+0x5f0/0xc60
[ 54.918027][ T12] ? rtnl_is_locked+0x15/0x20
[ 54.918035][ T12] ? dev_ingress_queue_create+0x190/0x190
[ 54.918041][ T12] ? generic_xdp_install+0x410/0x410
[ 54.918052][ T12] ops_undo_list+0x714/0x890
[ 54.918062][ T12] ? netns_get+0x110/0x110
[ 54.918067][ T12] ? cleanup_net+0x2d6/0x830
[ 54.918077][ T12] cleanup_net+0x3b2/0x830
[ 54.918083][ T12] ? net_passive_dec+0x190/0x190
[ 54.918091][ T12] ? rcu_is_watching+0x12/0xb0
[ 54.918102][ T12] process_one_work+0xe35/0x1650
[ 54.918116][ T12] ? pwq_dec_nr_in_flight+0x550/0x550
[ 54.918127][ T12] ? assign_work+0x168/0x240
[ 54.918134][ T12] worker_thread+0x591/0xcf0
[ 54.918145][ T12] ? rescuer_thread+0xd10/0xd10
[ 54.918151][ T12] kthread+0x37b/0x5f0
[ 54.918159][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 54.918163][ T12] ? ret_from_fork+0x1b/0x270
[ 54.918169][ T12] ? __lock_release+0x5d/0x170
[ 54.918179][ T12] ? rcu_is_watching+0x12/0xb0
[ 54.918184][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 54.918191][ T12] ret_from_fork+0x1db/0x270
[ 54.918196][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 54.918201][ T12] ret_from_fork_asm+0x11/0x20
[ 54.918217][ T12]
[ 54.918220][ T12]
[ 54.927928][ T12] Allocated by task 393:
[ 54.928170][ T12] kasan_save_stack+0x24/0x40
[ 54.928447][ T12] kasan_save_track+0x14/0x30
[ 54.928707][ T12] __kasan_kmalloc+0x7b/0x90
[ 54.929088][ T12] __kvmalloc_node_noprof+0x2e5/0x8e0
[ 54.929358][ T12] alloc_netdev_mqs+0x7d/0x1370
[ 54.929527][ T12] sit_init_net+0x169/0x550
[ 54.929691][ T12] ops_init+0x189/0x550
[ 54.929814][ T12] setup_net+0xf1/0x380
[ 54.929931][ T12] copy_net_ns+0x21a/0x380
[ 54.930165][ T12] create_new_namespaces+0x35f/0x900
[ 54.930430][ T12] unshare_nsproxy_namespaces+0x89/0x120
[ 54.930696][ T12] ksys_unshare+0x2a3/0x660
[ 54.930974][ T12] __x64_sys_unshare+0x31/0x40
[ 54.931237][ T12] do_syscall_64+0xc1/0xfd0
[ 54.931509][ T12] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 54.931869][ T12]
[ 54.932028][ T12] Freed by task 12:
[ 54.932400][ T12] kasan_save_stack+0x24/0x40
[ 54.932661][ T12] kasan_save_track+0x14/0x30
[ 54.932824][ T12] __kasan_save_free_info+0x3b/0x60
[ 54.933039][ T12] __kasan_slab_free+0x3f/0x60
[ 54.933314][ T12] kfree+0x21d/0x540
[ 54.933453][ T12] device_release+0x9c/0x210
[ 54.933645][ T12] kobject_cleanup+0xfe/0x360
[ 54.933942][ T12] netdev_run_todo+0x81f/0xc60
[ 54.934134][ T12] ops_undo_list+0x714/0x890
[ 54.934403][ T12] cleanup_net+0x3b2/0x830
[ 54.934617][ T12] process_one_work+0xe35/0x1650
[ 54.934807][ T12] worker_thread+0x591/0xcf0
[ 54.934996][ T12] kthread+0x37b/0x5f0
[ 54.935224][ T12] ret_from_fork+0x1db/0x270
[ 54.935414][ T12] ret_from_fork_asm+0x11/0x20
[ 54.935599][ T12]
[ 54.935690][ T12] The buggy address belongs to the object at ffff888005c39000
[ 54.935690][ T12] which belongs to the cache kmalloc-4k of size 4096
[ 54.936151][ T12] The buggy address is located 1708 bytes inside of
[ 54.936151][ T12] freed 4096-byte region [ffff888005c39000, ffff888005c3a000)
[ 54.936686][ T12]
[ 54.936780][ T12] The buggy address belongs to the physical page:
[ 54.937017][ T12] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x5c38
[ 54.937398][ T12] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[ 54.937875][ T12] flags: 0x80000000000040(head|node=0|zone=1)
[ 54.938231][ T12] page_type: f5(slab)
[ 54.938382][ T12] raw: 0080000000000040 ffff888001043700 ffffea0000220410 ffffea0000160010
[ 54.938719][ T12] raw: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 54.939054][ T12] head: 0080000000000040 ffff888001043700 ffffea0000220410 ffffea0000160010
[ 54.939383][ T12] head: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 54.939710][ T12] head: 0080000000000003 ffffea0000170e01 00000000ffffffff 00000000ffffffff
[ 54.940042][ T12] head: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
[ 54.940368][ T12] page dumped because: kasan: bad access detected
[ 54.940605][ T12]
[ 54.940696][ T12] Memory state around the buggy address:
[ 54.940964][ T12] ffff888005c39580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 54.941250][ T12] ffff888005c39600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 54.941602][ T12] >ffff888005c39680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 54.941877][ T12] ^
[ 54.942067][ T12] ffff888005c39700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 54.942330][ T12] ffff888005c39780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 54.942586][ T12] ==================================================================
[ 54.942877][ T12] Disabling lock debugging due to kernel taint
[ 54.943122][ T12] ------------[ cut here ]------------
[ 54.943348][ T12] refcount_t: underflow; use-after-free.
[ 54.943565][ T12] WARNING: CPU: 3 PID: 12 at lib/refcount.c:28 refcount_warn_saturate+0x16f/0x1b0
[ 54.943920][ T12] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel bridge stp llc sch_ingress vrf veth
[ 54.944376][ T12] CPU: 3 UID: 0 PID: 12 Comm: kworker/u16:0 Tainted: G B 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 54.944874][ T12] Tainted: [B]=BAD_PAGE
[ 54.945047][ T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 54.945357][ T12] Workqueue: netns cleanup_net
[ 54.945556][ T12] RIP: 0010:refcount_warn_saturate+0x16f/0x1b0
[ 54.945790][ 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 05 8c 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
[ 54.946635][ T12] RSP: 0000:ffffc900000c7a08 EFLAGS: 00010282
[ 54.946874][ T12] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[ 54.947152][ T12] RDX: 0000000000000002 RSI: 0000000000000004 RDI: 0000000000000001
[ 54.947419][ T12] RBP: 0000000000000003 R08: 0000000000000000 R09: fffffbfff193e134
[ 54.947877][ T12] R10: 0000000000000003 R11: ffffc900000c7580 R12: 0000000000000001
[ 54.948158][ T12] R13: dffffc0000000000 R14: dead000000000122 R15: dead000000000100
[ 54.948433][ T12] FS: 0000000000000000(0000) GS:ffff8880a8572000(0000) knlGS:0000000000000000
[ 54.948767][ T12] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 54.949013][ T12] CR2: 00007fad4e5eb75b CR3: 0000000013735002 CR4: 0000000000772ef0
[ 54.949290][ T12] PKRU: 55555554
[ 54.949424][ T12] Call Trace:
[ 54.949578][ T12]
[ 54.949670][ T12] netdev_run_todo+0x5f0/0xc60
[ 54.949867][ T12] ? rtnl_is_locked+0x15/0x20
[ 54.950147][ T12] ? dev_ingress_queue_create+0x190/0x190
[ 54.950330][ T12] ? generic_xdp_install+0x410/0x410
[ 54.950514][ T12] ops_undo_list+0x714/0x890
[ 54.950833][ T12] ? netns_get+0x110/0x110
[ 54.951125][ T12] ? cleanup_net+0x2d6/0x830
[ 54.951305][ T12] cleanup_net+0x3b2/0x830
[ 54.951482][ T12] ? net_passive_dec+0x190/0x190
[ 54.951681][ T12] ? rcu_is_watching+0x12/0xb0
[ 54.951877][ T12] process_one_work+0xe35/0x1650
[ 54.952076][ T12] ? pwq_dec_nr_in_flight+0x550/0x550
[ 54.952254][ T12] ? assign_work+0x168/0x240
[ 54.952448][ T12] worker_thread+0x591/0xcf0
[ 54.952628][ T12] ? rescuer_thread+0xd10/0xd10
[ 54.952809][ T12] kthread+0x37b/0x5f0
[ 54.952949][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 54.953144][ T12] ? ret_from_fork+0x1b/0x270
[ 54.953334][ T12] ? __lock_release+0x5d/0x170
[ 54.953519][ T12] ? rcu_is_watching+0x12/0xb0
[ 54.953724][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 54.953905][ T12] ret_from_fork+0x1db/0x270
[ 54.954179][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 54.954366][ T12] ret_from_fork_asm+0x11/0x20
[ 54.954547][ T12]
[ 54.954680][ T12] irq event stamp: 41033
[ 54.954824][ T12] hardirqs last enabled at (41033): [] irqentry_exit+0x3b/0x80
[ 54.955241][ T12] hardirqs last disabled at (41032): [] handle_softirqs+0x47f/0x610
[ 54.955566][ T12] softirqs last enabled at (39938): [] br_multicast_dev_del+0x15e/0x240 [bridge]
[ 54.955971][ T12] softirqs last disabled at (39928): [] br_multicast_dev_del+0x7e/0x240 [bridge]
[ 54.956365][ T12] ---[ end trace 0000000000000000 ]---
[ 55.252168][ T12] vx2: left allmulticast mode
[ 55.252400][ T12] vx2: left promiscuous mode
[ 55.252886][ T12] br2: port 2(vx2) entered disabled state
[ 55.254500][ T12] w1: left allmulticast mode
[ 55.254801][ T12] w1: left promiscuous mode
[ 55.255222][ T12] br2: port 1(w1) entered disabled state
[ 57.460057][ T537] vx1: left allmulticast mode
[ 57.460358][ T537] vx1: left promiscuous mode
[ 57.460733][ T537] br1: port 1(vx1) entered disabled state
[ 57.751326][ T540] br1: port 3(veth2) entered disabled state
[ 57.830017][ T541] veth2: left allmulticast mode
[ 57.830283][ T541] veth2: left promiscuous mode
[ 57.830682][ T541] br1: port 3(veth2) entered disabled state
[ 57.939138][ T542] br1: port 2(veth1) entered disabled state
[ 58.016479][ T543] veth1: left allmulticast mode
[ 58.017031][ T543] veth1: left promiscuous mode
[ 58.017403][ T543] br1: port 2(veth1) entered disabled state