[ 15.832430][ T256] ip_local_port_range: prefer different parity for start/end values.
[ 15.926408][ T12] ==================================================================
[ 15.926826][ T12] BUG: KASAN: slab-use-after-free in kobject_put+0xbb/0xd0
[ 15.927222][ T12] Read of size 1 at addr ffff8880085896c4 by task kworker/u16:0/12
[ 15.927608][ T12]
[ 15.927725][ T12] CPU: 3 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 15.927732][ T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 15.927736][ T12] Workqueue: netns cleanup_net
[ 15.927758][ T12] Call Trace:
[ 15.927763][ T12]
[ 15.927767][ T12] dump_stack_lvl+0x82/0xc0
[ 15.927777][ T12] print_address_description.constprop.0+0x2c/0x3a0
[ 15.927795][ T12] ? kobject_put+0xbb/0xd0
[ 15.927801][ T12] print_report+0xb4/0x270
[ 15.927806][ T12] ? kobject_put+0xbb/0xd0
[ 15.927811][ T12] ? kasan_addr_to_slab+0x21/0x70
[ 15.927817][ T12] ? kobject_put+0xbb/0xd0
[ 15.927824][ T12] kasan_report+0xca/0x100
[ 15.927830][ T12] ? kobject_put+0xbb/0xd0
[ 15.927840][ T12] kobject_put+0xbb/0xd0
[ 15.927845][ T12] netdev_run_todo+0x5f0/0xc60
[ 15.927855][ T12] ? dev_ingress_queue_create+0x190/0x190
[ 15.927861][ T12] ? generic_xdp_install+0x410/0x410
[ 15.927865][ T12] ? net_generic+0xb1/0x1f0
[ 15.927884][ T12] ops_undo_list+0x714/0x890
[ 15.927893][ T12] ? rtnl_net_dumpid_one+0x270/0x270
[ 15.927898][ T12] ? cleanup_net+0x2d6/0x8b0
[ 15.927909][ T12] cleanup_net+0x3b2/0x8b0
[ 15.927916][ T12] ? net_passive_dec+0x190/0x190
[ 15.927924][ T12] ? rcu_is_watching+0x12/0xb0
[ 15.927939][ T12] process_one_work+0xe35/0x1650
[ 15.927955][ T12] ? pwq_dec_nr_in_flight+0x550/0x550
[ 15.927965][ T12] ? assign_work+0x168/0x240
[ 15.927973][ T12] worker_thread+0x591/0xcf0
[ 15.927982][ T12] ? rescuer_thread+0xd10/0xd10
[ 15.927989][ T12] kthread+0x37b/0x5f0
[ 15.927995][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 15.927999][ T12] ? ret_from_fork+0x1b/0x270
[ 15.928016][ T12] ? __lock_release+0x5d/0x170
[ 15.928022][ T12] ? rcu_is_watching+0x12/0xb0
[ 15.928028][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 15.928034][ T12] ret_from_fork+0x1db/0x270
[ 15.928040][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 15.928045][ T12] ret_from_fork_asm+0x11/0x20
[ 15.928065][ T12]
[ 15.928067][ T12]
[ 15.937703][ T12] Allocated by task 256:
[ 15.937906][ T12] kasan_save_stack+0x24/0x40
[ 15.938178][ T12] kasan_save_track+0x14/0x30
[ 15.938421][ T12] __kasan_kmalloc+0x7b/0x90
[ 15.938666][ T12] __kvmalloc_node_noprof+0x2e5/0x8e0
[ 15.938921][ T12] alloc_netdev_mqs+0x7d/0x1370
[ 15.939155][ T12] ip6_tnl_init_net+0x102/0x3f0
[ 15.939423][ T12] ops_init+0x189/0x550
[ 15.939620][ T12] setup_net+0xf1/0x380
[ 15.939814][ T12] copy_net_ns+0x253/0x510
[ 15.940059][ T12] create_new_namespaces+0x35f/0x900
[ 15.940312][ T12] unshare_nsproxy_namespaces+0x8a/0x1a0
[ 15.940559][ T12] ksys_unshare+0x2be/0x6e0
[ 15.940891][ T12] __x64_sys_unshare+0x31/0x40
[ 15.941087][ T12] do_syscall_64+0xc1/0xfd0
[ 15.941255][ T12] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 15.941488][ T12]
[ 15.941566][ T12] Freed by task 12:
[ 15.941699][ T12] kasan_save_stack+0x24/0x40
[ 15.941862][ T12] kasan_save_track+0x14/0x30
[ 15.942016][ T12] __kasan_save_free_info+0x3b/0x60
[ 15.942189][ T12] __kasan_slab_free+0x3f/0x60
[ 15.942353][ T12] kfree+0x21d/0x540
[ 15.942471][ T12] device_release+0x9c/0x210
[ 15.942652][ T12] kobject_cleanup+0xfe/0x360
[ 15.942810][ T12] netdev_run_todo+0x81f/0xc60
[ 15.942966][ T12] ops_undo_list+0x714/0x890
[ 15.943129][ T12] cleanup_net+0x3b2/0x8b0
[ 15.943283][ T12] process_one_work+0xe35/0x1650
[ 15.943437][ T12] worker_thread+0x591/0xcf0
[ 15.943603][ T12] kthread+0x37b/0x5f0
[ 15.943823][ T12] ret_from_fork+0x1db/0x270
[ 15.943982][ T12] ret_from_fork_asm+0x11/0x20
[ 15.944146][ T12]
[ 15.944224][ T12] The buggy address belongs to the object at ffff888008589000
[ 15.944224][ T12] which belongs to the cache kmalloc-4k of size 4096
[ 15.944722][ T12] The buggy address is located 1732 bytes inside of
[ 15.944722][ T12] freed 4096-byte region [ffff888008589000, ffff88800858a000)
[ 15.945102][ T12]
[ 15.945265][ T12] The buggy address belongs to the physical page:
[ 15.945466][ T12] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x8588
[ 15.945765][ T12] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[ 15.946098][ T12] flags: 0x80000000000040(head|node=0|zone=1)
[ 15.946304][ T12] page_type: f5(slab)
[ 15.946430][ T12] raw: 0080000000000040 ffff888001043700 ffffea0000216010 ffffea000023a810
[ 15.946725][ T12] raw: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 15.947002][ T12] head: 0080000000000040 ffff888001043700 ffffea0000216010 ffffea000023a810
[ 15.947284][ T12] head: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 15.947666][ T12] head: 0080000000000003 ffffea0000216201 00000000ffffffff 00000000ffffffff
[ 15.947933][ T12] head: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
[ 15.948303][ T12] page dumped because: kasan: bad access detected
[ 15.948494][ T12]
[ 15.948570][ T12] Memory state around the buggy address:
[ 15.948742][ T12] ffff888008589580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 15.949046][ T12] ffff888008589600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 15.949273][ T12] >ffff888008589680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 15.949586][ T12] ^
[ 15.949790][ T12] ffff888008589700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 15.950013][ T12] ffff888008589780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 15.950320][ T12] ==================================================================
[ 15.950671][ T12] Disabling lock debugging due to kernel taint
[ 15.950903][ T12] ------------[ cut here ]------------
[ 15.951062][ T12] refcount_t: underflow; use-after-free.
[ 15.951284][ T12] WARNING: CPU: 1 PID: 12 at lib/refcount.c:28 refcount_warn_saturate+0x16f/0x1b0
[ 15.951559][ T12] Modules linked in:
[ 15.951690][ T12] CPU: 1 UID: 0 PID: 12 Comm: kworker/u16:0 Tainted: G B 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 15.952033][ T12] Tainted: [B]=BAD_PAGE
[ 15.952153][ T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 15.952345][ T12] Workqueue: netns cleanup_net
[ 15.952506][ T12] RIP: 0010:refcount_warn_saturate+0x16f/0x1b0
[ 15.952710][ T12] Code: cc 38 03 80 fb 01 0f 87 29 33 d7 fe 83 e3 01 0f 85 51 ff ff ff c6 05 17 cc 38 03 01 90 48 c7 c7 40 ba 05 b5 e8 62 d6 16 ff 90 <0f> 0b 90 90 e9 33 ff ff ff 48 89 df e8 c0 9d a0 ff e9 ba fe ff ff
[ 15.953275][ T12] RSP: 0018:ffffc900000c7a08 EFLAGS: 00010282
[ 15.953487][ T12] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[ 15.953719][ T12] RDX: 0000000000000002 RSI: 0000000000000004 RDI: 0000000000000001
[ 15.953946][ T12] RBP: 0000000000000003 R08: 0000000000000000 R09: fffffbfff6c00934
[ 15.954171][ T12] R10: 0000000000000003 R11: ffffc900000c7580 R12: 0000000000000001
[ 15.954401][ T12] R13: dffffc0000000000 R14: dead000000000122 R15: dead000000000100
[ 15.954641][ T12] FS: 0000000000000000(0000) GS:ffff8880b5b88000(0000) knlGS:0000000000000000
[ 15.954903][ T12] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 15.955090][ T12] CR2: 00007f028d062658 CR3: 0000000005915003 CR4: 0000000000772ef0
[ 15.955322][ T12] PKRU: 55555554
[ 15.955441][ T12] Call Trace:
[ 15.955653][ T12]
[ 15.955734][ T12] netdev_run_todo+0x5f0/0xc60
[ 15.955887][ T12] ? dev_ingress_queue_create+0x190/0x190
[ 15.956041][ T12] ? generic_xdp_install+0x410/0x410
[ 15.956190][ T12] ? net_generic+0xb1/0x1f0
[ 15.956431][ T12] ops_undo_list+0x714/0x890
[ 15.956595][ T12] ? rtnl_net_dumpid_one+0x270/0x270
[ 15.956756][ T12] ? cleanup_net+0x2d6/0x8b0
[ 15.956910][ T12] cleanup_net+0x3b2/0x8b0
[ 15.957158][ T12] ? net_passive_dec+0x190/0x190
[ 15.957326][ T12] ? rcu_is_watching+0x12/0xb0
[ 15.957482][ T12] process_one_work+0xe35/0x1650
[ 15.957645][ T12] ? pwq_dec_nr_in_flight+0x550/0x550
[ 15.957891][ T12] ? assign_work+0x168/0x240
[ 15.958046][ T12] worker_thread+0x591/0xcf0
[ 15.958288][ T12] ? rescuer_thread+0xd10/0xd10
[ 15.958437][ T12] kthread+0x37b/0x5f0
[ 15.958646][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 15.958807][ T12] ? ret_from_fork+0x1b/0x270
[ 15.958959][ T12] ? __lock_release+0x5d/0x170
[ 15.959105][ T12] ? rcu_is_watching+0x12/0xb0
[ 15.959352][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 15.959500][ T12] ret_from_fork+0x1db/0x270
[ 15.959669][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 15.959818][ T12] ret_from_fork_asm+0x11/0x20
[ 15.960057][ T12]
[ 15.960176][ T12] irq event stamp: 24883
[ 15.960291][ T12] hardirqs last enabled at (24883): [] finish_task_switch.isra.0+0x245/0x960
[ 15.960589][ T12] hardirqs last disabled at (24882): [] __schedule+0x94a/0x1b10
[ 15.960886][ T12] softirqs last enabled at (23936): [] unregister_netdevice_many_notify+0x714/0x1c90
[ 15.961184][ T12] softirqs last disabled at (23934): [] dev_mc_flush+0x54/0x90
[ 15.961539][ T12] ---[ end trace 0000000000000000 ]---
[ 16.499376][ T262] ip_local_port_range: prefer different parity for start/end values.
[ 17.000592][ T268] ip_local_port_range: prefer different parity for start/end values.
[ 17.538937][ T274] ip_local_port_range: prefer different parity for start/end values.