[ 21.199844][ T281] ipip: IPv4 and MPLS over IPv4 tunneling driver
[ 34.798126][ T12] ==================================================================
[ 34.798613][ T12] BUG: KASAN: slab-use-after-free in kobject_put+0xbb/0xd0
[ 34.798933][ T12] Read of size 1 at addr ffff8880088cc6ac by task kworker/u16:0/12
[ 34.799201][ T12]
[ 34.799310][ T12] CPU: 0 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 34.799317][ T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 34.799321][ T12] Workqueue: netns cleanup_net
[ 34.799334][ T12] Call Trace:
[ 34.799339][ T12]
[ 34.799342][ T12] dump_stack_lvl+0x82/0xc0
[ 34.799349][ T12] print_address_description.constprop.0+0x2c/0x3a0
[ 34.799368][ T12] ? kobject_put+0xbb/0xd0
[ 34.799372][ T12] print_report+0xb4/0x270
[ 34.799376][ T12] ? kobject_put+0xbb/0xd0
[ 34.799379][ T12] ? kasan_addr_to_slab+0x21/0x70
[ 34.799383][ T12] ? kobject_put+0xbb/0xd0
[ 34.799386][ T12] kasan_report+0xca/0x100
[ 34.799390][ T12] ? kobject_put+0xbb/0xd0
[ 34.799396][ T12] kobject_put+0xbb/0xd0
[ 34.799399][ T12] netdev_run_todo+0x5f0/0xc60
[ 34.799406][ T12] ? dev_ingress_queue_create+0x190/0x190
[ 34.799410][ T12] ? generic_xdp_install+0x410/0x410
[ 34.799417][ T12] ops_undo_list+0x714/0x890
[ 34.799427][ T12] ? netns_get+0x110/0x110
[ 34.799430][ T12] ? cleanup_net+0x2d6/0x830
[ 34.799435][ T12] cleanup_net+0x3b2/0x830
[ 34.799439][ T12] ? net_passive_dec+0x190/0x190
[ 34.799444][ T12] ? rcu_is_watching+0x12/0xb0
[ 34.799454][ T12] process_one_work+0xe35/0x1650
[ 34.799464][ T12] ? pwq_dec_nr_in_flight+0x550/0x550
[ 34.799469][ T12] ? assign_work+0x168/0x240
[ 34.799473][ T12] worker_thread+0x591/0xcf0
[ 34.799479][ T12] ? rescuer_thread+0xd10/0xd10
[ 34.799482][ T12] kthread+0x37b/0x5f0
[ 34.799488][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 34.799491][ T12] ? ret_from_fork+0x1b/0x270
[ 34.799505][ T12] ? __lock_release+0x5d/0x170
[ 34.799514][ T12] ? rcu_is_watching+0x12/0xb0
[ 34.799517][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 34.799520][ T12] ret_from_fork+0x1db/0x270
[ 34.799523][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 34.799526][ T12] ret_from_fork_asm+0x11/0x20
[ 34.799541][ T12]
[ 34.799542][ T12]
[ 34.806766][ T12] Allocated by task 281:
[ 34.806903][ T12] kasan_save_stack+0x24/0x40
[ 34.807098][ T12] kasan_save_track+0x14/0x30
[ 34.807284][ T12] __kasan_kmalloc+0x7b/0x90
[ 34.807471][ T12] __kvmalloc_node_noprof+0x2e5/0x8e0
[ 34.807667][ T12] alloc_netdev_mqs+0x7d/0x1370
[ 34.807861][ T12] __ip_tunnel_create+0x191/0x440
[ 34.808051][ T12] ip_tunnel_init_net+0x16f/0x4e0
[ 34.808238][ T12] ops_init+0x189/0x550
[ 34.808380][ T12] register_pernet_operations+0x31f/0x8b0
[ 34.808566][ T12] register_pernet_device+0x2a/0x60
[ 34.808754][ T12] inet_diag_parse_attrs+0x23/0x160 [inet_diag]
[ 34.808988][ T12] do_one_initcall+0x8c/0x1d0
[ 34.809179][ T12] do_init_module+0x27a/0x860
[ 34.809370][ T12] load_module+0x1d55/0x2850
[ 34.809554][ T12] init_module_from_file+0xe9/0x150
[ 34.809742][ T12] idempotent_init_module+0x331/0x610
[ 34.810020][ T12] __x64_sys_finit_module+0xca/0x150
[ 34.810210][ T12] do_syscall_64+0xc1/0xfd0
[ 34.810405][ T12] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 34.810651][ T12]
[ 34.810749][ T12] Freed by task 12:
[ 34.810893][ T12] kasan_save_stack+0x24/0x40
[ 34.811263][ T12] kasan_save_track+0x14/0x30
[ 34.811455][ T12] __kasan_save_free_info+0x3b/0x60
[ 34.811664][ T12] __kasan_slab_free+0x3f/0x60
[ 34.811859][ T12] kfree+0x21d/0x540
[ 34.812002][ T12] device_release+0x9c/0x210
[ 34.812201][ T12] kobject_cleanup+0xfe/0x360
[ 34.812393][ T12] netdev_run_todo+0x81f/0xc60
[ 34.812582][ T12] ops_undo_list+0x714/0x890
[ 34.812952][ T12] cleanup_net+0x3b2/0x830
[ 34.813155][ T12] process_one_work+0xe35/0x1650
[ 34.813348][ T12] worker_thread+0x591/0xcf0
[ 34.813540][ T12] kthread+0x37b/0x5f0
[ 34.813773][ T12] ret_from_fork+0x1db/0x270
[ 34.813965][ T12] ret_from_fork_asm+0x11/0x20
[ 34.814244][ T12]
[ 34.814343][ T12] The buggy address belongs to the object at ffff8880088cc000
[ 34.814343][ T12] which belongs to the cache kmalloc-4k of size 4096
[ 34.814798][ T12] The buggy address is located 1708 bytes inside of
[ 34.814798][ T12] freed 4096-byte region [ffff8880088cc000, ffff8880088cd000)
[ 34.815341][ T12]
[ 34.815443][ T12] The buggy address belongs to the physical page:
[ 34.815765][ T12] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x88c8
[ 34.816095][ T12] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[ 34.816376][ T12] flags: 0x80000000000040(head|node=0|zone=1)
[ 34.816716][ T12] page_type: f5(slab)
[ 34.816861][ T12] raw: 0080000000000040 ffff888001043700 ffffea0000141010 ffffea00002efe10
[ 34.817297][ T12] raw: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 34.817625][ T12] head: 0080000000000040 ffff888001043700 ffffea0000141010 ffffea00002efe10
[ 34.818149][ T12] head: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 34.818481][ T12] head: 0080000000000003 ffffea0000223201 00000000ffffffff 00000000ffffffff
[ 34.818825][ T12] head: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
[ 34.819152][ T12] page dumped because: kasan: bad access detected
[ 34.819386][ T12]
[ 34.819481][ T12] Memory state around the buggy address:
[ 34.819668][ T12] ffff8880088cc580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 34.819953][ T12] ffff8880088cc600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 34.820231][ T12] >ffff8880088cc680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 34.820686][ T12] ^
[ 34.820870][ T12] ffff8880088cc700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 34.821235][ T12] ffff8880088cc780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 34.821523][ T12] ==================================================================
[ 34.823449][ T12] Disabling lock debugging due to kernel taint
[ 34.823716][ T12] ------------[ cut here ]------------
[ 34.823903][ T12] refcount_t: underflow; use-after-free.
[ 34.824162][ T12] WARNING: CPU: 0 PID: 12 at lib/refcount.c:28 refcount_warn_saturate+0x16f/0x1b0
[ 34.824508][ T12] Modules linked in: xt_conntrack nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nft_compat nf_tables x_tables inet_diag ipip veth
[ 34.824992][ T12] CPU: 0 UID: 0 PID: 12 Comm: kworker/u16:0 Tainted: G B 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 34.825421][ T12] Tainted: [B]=BAD_PAGE
[ 34.825564][ T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 34.825810][ T12] Workqueue: netns cleanup_net
[ 34.826009][ T12] RIP: 0010:refcount_warn_saturate+0x16f/0x1b0
[ 34.826255][ T12] Code: 83 90 02 80 fb 01 0f 87 95 6b d6 fe 83 e3 01 0f 85 51 ff ff ff c6 05 b1 83 90 02 01 90 48 c7 c7 a0 de 05 aa e8 c2 8b 15 ff 90 <0f> 0b 90 90 e9 33 ff ff ff 48 89 df e8 f0 34 a1 ff e9 ba fe ff ff
[ 34.827494][ T12] RSP: 0018:ffffc900000c7a08 EFLAGS: 00010282
[ 34.827756][ T12] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[ 34.828097][ T12] RDX: 0000000000000002 RSI: 0000000000000004 RDI: 0000000000000001
[ 34.828377][ T12] RBP: 0000000000000003 R08: 0000000000000000 R09: fffffbfff553e220
[ 34.828651][ T12] R10: 0000000000000003 R11: ffffc900000c7580 R12: 0000000000000001
[ 34.828988][ T12] R13: dffffc0000000000 R14: dead000000000122 R15: dead000000000100
[ 34.829270][ T12] FS: 0000000000000000(0000) GS:ffff88808a3ec000(0000) knlGS:0000000000000000
[ 34.829591][ T12] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 34.829886][ T12] CR2: 00007f6f6cd72610 CR3: 0000000031d35004 CR4: 0000000000772ef0
[ 34.830167][ T12] PKRU: 55555554
[ 34.830309][ T12] Call Trace:
[ 34.830448][ T12]
[ 34.830546][ T12] netdev_run_todo+0x5f0/0xc60
[ 34.830736][ T12] ? dev_ingress_queue_create+0x190/0x190
[ 34.830995][ T12] ? generic_xdp_install+0x410/0x410
[ 34.831181][ T12] ops_undo_list+0x714/0x890
[ 34.831367][ T12] ? netns_get+0x110/0x110
[ 34.831563][ T12] ? cleanup_net+0x2d6/0x830
[ 34.831751][ T12] cleanup_net+0x3b2/0x830
[ 34.831996][ T12] ? net_passive_dec+0x190/0x190
[ 34.832184][ T12] ? rcu_is_watching+0x12/0xb0
[ 34.832376][ T12] process_one_work+0xe35/0x1650
[ 34.832563][ T12] ? pwq_dec_nr_in_flight+0x550/0x550
[ 34.832745][ T12] ? assign_work+0x168/0x240
[ 34.832987][ T12] worker_thread+0x591/0xcf0
[ 34.833173][ T12] ? rescuer_thread+0xd10/0xd10
[ 34.833357][ T12] kthread+0x37b/0x5f0
[ 34.833494][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 34.833677][ T12] ? ret_from_fork+0x1b/0x270
[ 34.833949][ T12] ? __lock_release+0x5d/0x170
[ 34.834143][ T12] ? rcu_is_watching+0x12/0xb0
[ 34.834320][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 34.834504][ T12] ret_from_fork+0x1db/0x270
[ 34.834686][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 34.834929][ T12] ret_from_fork_asm+0x11/0x20
[ 34.835122][ T12]
[ 34.835263][ T12] irq event stamp: 14283
[ 34.835406][ T12] hardirqs last enabled at (14283): [] finish_task_switch.isra.0+0x245/0x960
[ 34.835784][ T12] hardirqs last disabled at (14282): [] __schedule+0x94a/0x1b10
[ 34.836181][ T12] softirqs last enabled at (14114): [] handle_softirqs+0x352/0x610
[ 34.836505][ T12] softirqs last disabled at (14105): [] irq_exit_rcu+0xab/0x100
[ 34.836885][ T12] ---[ end trace 0000000000000000 ]---