[ 15.722114][ T259] ip_local_port_range: prefer different parity for start/end values.
[ 16.275129][ T69] ==================================================================
[ 16.275425][ T69] BUG: KASAN: slab-use-after-free in kobject_put+0xbb/0xd0
[ 16.275727][ T69] Read of size 1 at addr ffff8880075e96c4 by task kworker/u16:1/69
[ 16.275967][ T69]
[ 16.276050][ T69] CPU: 1 UID: 0 PID: 69 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 16.276055][ T69] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 16.276058][ T69] Workqueue: netns cleanup_net
[ 16.276067][ T69] Call Trace:
[ 16.276069][ T69]
[ 16.276072][ T69] dump_stack_lvl+0x82/0xc0
[ 16.276077][ T69] print_address_description.constprop.0+0x2c/0x3a0
[ 16.276085][ T69] ? kobject_put+0xbb/0xd0
[ 16.276089][ T69] print_report+0xb4/0x270
[ 16.276092][ T69] ? kobject_put+0xbb/0xd0
[ 16.276095][ T69] ? kasan_addr_to_slab+0x21/0x70
[ 16.276099][ T69] ? kobject_put+0xbb/0xd0
[ 16.276102][ T69] kasan_report+0xca/0x100
[ 16.276105][ T69] ? kobject_put+0xbb/0xd0
[ 16.276111][ T69] kobject_put+0xbb/0xd0
[ 16.276114][ T69] netdev_run_todo+0x5f0/0xc60
[ 16.276120][ T69] ? dev_ingress_queue_create+0x190/0x190
[ 16.276123][ T69] ? generic_xdp_install+0x410/0x410
[ 16.276127][ T69] ? net_generic+0xb1/0x1f0
[ 16.276135][ T69] ops_undo_list+0x714/0x890
[ 16.276141][ T69] ? rtnl_net_dumpid_one+0x270/0x270
[ 16.276144][ T69] ? cleanup_net+0x2d6/0x8b0
[ 16.276150][ T69] cleanup_net+0x3b2/0x8b0
[ 16.276154][ T69] ? net_passive_dec+0x190/0x190
[ 16.276159][ T69] ? rcu_is_watching+0x12/0xb0
[ 16.276166][ T69] process_one_work+0xe35/0x1650
[ 16.276174][ T69] ? pwq_dec_nr_in_flight+0x550/0x550
[ 16.276180][ T69] ? assign_work+0x168/0x240
[ 16.276184][ T69] worker_thread+0x591/0xcf0
[ 16.276190][ T69] ? rescuer_thread+0xd10/0xd10
[ 16.276194][ T69] kthread+0x37b/0x5f0
[ 16.276198][ T69] ? kthread_is_per_cpu+0xc0/0xc0
[ 16.276201][ T69] ? ret_from_fork+0x1b/0x270
[ 16.276205][ T69] ? __lock_release+0x5d/0x170
[ 16.276209][ T69] ? rcu_is_watching+0x12/0xb0
[ 16.276212][ T69] ? kthread_is_per_cpu+0xc0/0xc0
[ 16.276216][ T69] ret_from_fork+0x1db/0x270
[ 16.276218][ T69] ? kthread_is_per_cpu+0xc0/0xc0
[ 16.276221][ T69] ret_from_fork_asm+0x11/0x20
[ 16.276231][ T69]
[ 16.276232][ T69]
[ 16.283259][ T69] Allocated by task 257:
[ 16.283397][ T69] kasan_save_stack+0x24/0x40
[ 16.283694][ T69] kasan_save_track+0x14/0x30
[ 16.283873][ T69] __kasan_kmalloc+0x7b/0x90
[ 16.284045][ T69] __kvmalloc_node_noprof+0x2e5/0x8e0
[ 16.284223][ T69] alloc_netdev_mqs+0x7d/0x1370
[ 16.284512][ T69] ip6_tnl_init_net+0x102/0x3f0
[ 16.284696][ T69] ops_init+0x189/0x550
[ 16.284834][ T69] setup_net+0xf1/0x380
[ 16.284967][ T69] copy_net_ns+0x253/0x510
[ 16.285230][ T69] create_new_namespaces+0x35f/0x900
[ 16.285421][ T69] unshare_nsproxy_namespaces+0x8a/0x1a0
[ 16.285603][ T69] ksys_unshare+0x2be/0x6e0
[ 16.285789][ T69] __x64_sys_unshare+0x31/0x40
[ 16.286052][ T69] do_syscall_64+0xc1/0xfd0
[ 16.286230][ T69] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 16.286474][ T69]
[ 16.286568][ T69] Freed by task 69:
[ 16.286704][ T69] kasan_save_stack+0x24/0x40
[ 16.286977][ T69] kasan_save_track+0x14/0x30
[ 16.287154][ T69] __kasan_save_free_info+0x3b/0x60
[ 16.287332][ T69] __kasan_slab_free+0x3f/0x60
[ 16.287522][ T69] kfree+0x21d/0x540
[ 16.287761][ T69] device_release+0x9c/0x210
[ 16.287942][ T69] kobject_cleanup+0xfe/0x360
[ 16.288118][ T69] netdev_run_todo+0x81f/0xc60
[ 16.288292][ T69] ops_undo_list+0x714/0x890
[ 16.288574][ T69] cleanup_net+0x3b2/0x8b0
[ 16.288758][ T69] process_one_work+0xe35/0x1650
[ 16.288937][ T69] worker_thread+0x591/0xcf0
[ 16.289115][ T69] kthread+0x37b/0x5f0
[ 16.289335][ T69] ret_from_fork+0x1db/0x270
[ 16.289531][ T69] ret_from_fork_asm+0x11/0x20
[ 16.289719][ T69]
[ 16.289808][ T69] The buggy address belongs to the object at ffff8880075e9000
[ 16.289808][ T69] which belongs to the cache kmalloc-4k of size 4096
[ 16.290314][ T69] The buggy address is located 1732 bytes inside of
[ 16.290314][ T69] freed 4096-byte region [ffff8880075e9000, ffff8880075ea000)
[ 16.290768][ T69]
[ 16.290849][ T69] The buggy address belongs to the physical page:
[ 16.291048][ T69] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x75e8
[ 16.291359][ T69] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[ 16.291763][ T69] flags: 0x80000000000040(head|node=0|zone=1)
[ 16.291990][ T69] page_type: f5(slab)
[ 16.292131][ T69] raw: 0080000000000040 ffff888001043700 ffffea00001cb610 ffffea00001d7810
[ 16.292570][ T69] raw: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 16.292898][ T69] head: 0080000000000040 ffff888001043700 ffffea00001cb610 ffffea00001d7810
[ 16.293218][ T69] head: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 16.293636][ T69] head: 0080000000000003 ffffea00001d7a01 00000000ffffffff 00000000ffffffff
[ 16.293963][ T69] head: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
[ 16.294376][ T69] page dumped because: kasan: bad access detected
[ 16.294603][ T69]
[ 16.294701][ T69] Memory state around the buggy address:
[ 16.294870][ T69] ffff8880075e9580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 16.295209][ T69] ffff8880075e9600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 16.295471][ T69] >ffff8880075e9680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 16.295814][ T69] ^
[ 16.296031][ T69] ffff8880075e9700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 16.296282][ T69] ffff8880075e9780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 16.296664][ T69] ==================================================================
[ 16.297111][ T69] Disabling lock debugging due to kernel taint
[ 16.297530][ T69] ------------[ cut here ]------------
[ 16.297728][ T69] refcount_t: underflow; use-after-free.
[ 16.298945][ T69] WARNING: CPU: 2 PID: 69 at lib/refcount.c:28 refcount_warn_saturate+0x16f/0x1b0
[ 16.299312][ T69] Modules linked in:
[ 16.299520][ T69] CPU: 2 UID: 0 PID: 69 Comm: kworker/u16:1 Tainted: G B 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 16.299929][ T69] Tainted: [B]=BAD_PAGE
[ 16.300090][ T69] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 16.300322][ T69] Workqueue: netns cleanup_net
[ 16.300533][ T69] RIP: 0010:refcount_warn_saturate+0x16f/0x1b0
[ 16.300780][ T69] 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 65 97 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
[ 16.301379][ T69] RSP: 0018:ffffc900004a7a08 EFLAGS: 00010282
[ 16.301605][ T69] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[ 16.301867][ T69] RDX: 0000000000000002 RSI: 0000000000000004 RDI: 0000000000000001
[ 16.302119][ T69] RBP: 0000000000000003 R08: 0000000000000000 R09: fffffbfff30c0934
[ 16.302387][ T69] R10: 0000000000000003 R11: ffffc900004a7580 R12: 0000000000000001
[ 16.302649][ T69] R13: dffffc0000000000 R14: dead000000000122 R15: dead000000000100
[ 16.303008][ T69] FS: 0000000000000000(0000) GS:ffff8880d3608000(0000) knlGS:0000000000000000
[ 16.303359][ T69] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 16.303651][ T69] CR2: 00005593aa077b68 CR3: 0000000014b49004 CR4: 0000000000772ef0
[ 16.303976][ T69] PKRU: 55555554
[ 16.304158][ T69] Call Trace:
[ 16.304297][ T69]
[ 16.304408][ T69] netdev_run_todo+0x5f0/0xc60
[ 16.304596][ T69] ? dev_ingress_queue_create+0x190/0x190
[ 16.304774][ T69] ? generic_xdp_install+0x410/0x410
[ 16.304955][ T69] ? net_generic+0xb1/0x1f0
[ 16.305138][ T69] ops_undo_list+0x714/0x890
[ 16.305326][ T69] ? rtnl_net_dumpid_one+0x270/0x270
[ 16.305514][ T69] ? cleanup_net+0x2d6/0x8b0
[ 16.305688][ T69] cleanup_net+0x3b2/0x8b0
[ 16.305874][ T69] ? net_passive_dec+0x190/0x190
[ 16.306053][ T69] ? rcu_is_watching+0x12/0xb0
[ 16.306230][ T69] process_one_work+0xe35/0x1650
[ 16.306438][ T69] ? pwq_dec_nr_in_flight+0x550/0x550
[ 16.306624][ T69] ? assign_work+0x168/0x240
[ 16.306800][ T69] worker_thread+0x591/0xcf0
[ 16.306988][ T69] ? rescuer_thread+0xd10/0xd10
[ 16.307170][ T69] kthread+0x37b/0x5f0
[ 16.307316][ T69] ? kthread_is_per_cpu+0xc0/0xc0
[ 16.307511][ T69] ? ret_from_fork+0x1b/0x270
[ 16.307690][ T69] ? __lock_release+0x5d/0x170
[ 16.307877][ T69] ? rcu_is_watching+0x12/0xb0
[ 16.308065][ T69] ? kthread_is_per_cpu+0xc0/0xc0
[ 16.308272][ T69] ret_from_fork+0x1db/0x270
[ 16.308476][ T69] ? kthread_is_per_cpu+0xc0/0xc0
[ 16.308660][ T69] ret_from_fork_asm+0x11/0x20
[ 16.308877][ T69]
[ 16.309024][ T69] irq event stamp: 8435
[ 16.309159][ T69] hardirqs last enabled at (8435): [] finish_task_switch.isra.0+0x245/0x960
[ 16.309505][ T69] hardirqs last disabled at (8434): [] __schedule+0x94a/0x1b10
[ 16.309799][ T69] softirqs last enabled at (7502): [] unregister_netdevice_many_notify+0x714/0x1c90
[ 16.310164][ T69] softirqs last disabled at (7500): [] dev_mc_flush+0x54/0x90
[ 16.310490][ T69] ---[ end trace 0000000000000000 ]---