[ 21.767977][ T262] ip (262) used greatest stack depth: 23936 bytes left
[ 24.974448][ T281] ipip: IPv4 and MPLS over IPv4 tunneling driver
[ 40.036073][ T69] ==================================================================
[ 40.036482][ T69] BUG: KASAN: slab-use-after-free in kobject_put+0xbb/0xd0
[ 40.036886][ T69] Read of size 1 at addr ffff88800caa96ac by task kworker/u16:1/69
[ 40.037223][ T69]
[ 40.037340][ T69] CPU: 3 UID: 0 PID: 69 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 40.037346][ T69] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 40.037349][ T69] Workqueue: netns cleanup_net
[ 40.037357][ T69] Call Trace:
[ 40.037359][ T69]
[ 40.037363][ T69] dump_stack_lvl+0x82/0xc0
[ 40.037371][ T69] print_address_description.constprop.0+0x2c/0x3a0
[ 40.037383][ T69] ? kobject_put+0xbb/0xd0
[ 40.037388][ T69] print_report+0xb4/0x270
[ 40.037392][ T69] ? kobject_put+0xbb/0xd0
[ 40.037395][ T69] ? kasan_addr_to_slab+0x21/0x70
[ 40.037399][ T69] ? kobject_put+0xbb/0xd0
[ 40.037403][ T69] kasan_report+0xca/0x100
[ 40.037407][ T69] ? kobject_put+0xbb/0xd0
[ 40.037417][ T69] kobject_put+0xbb/0xd0
[ 40.037423][ T69] netdev_run_todo+0x5f0/0xc60
[ 40.037432][ T69] ? dev_ingress_queue_create+0x190/0x190
[ 40.037437][ T69] ? generic_xdp_install+0x410/0x410
[ 40.037443][ T69] ops_undo_list+0x714/0x890
[ 40.037452][ T69] ? netns_get+0x110/0x110
[ 40.037455][ T69] ? cleanup_net+0x2d6/0x830
[ 40.037460][ T69] cleanup_net+0x3b2/0x830
[ 40.037464][ T69] ? net_passive_dec+0x190/0x190
[ 40.037468][ T69] ? rcu_is_watching+0x12/0xb0
[ 40.037474][ T69] process_one_work+0xe35/0x1650
[ 40.037482][ T69] ? pwq_dec_nr_in_flight+0x550/0x550
[ 40.037487][ T69] ? assign_work+0x168/0x240
[ 40.037491][ T69] worker_thread+0x591/0xcf0
[ 40.037497][ T69] ? rescuer_thread+0xd10/0xd10
[ 40.037500][ T69] kthread+0x37b/0x5f0
[ 40.037504][ T69] ? kthread_is_per_cpu+0xc0/0xc0
[ 40.037506][ T69] ? ret_from_fork+0x1b/0x270
[ 40.037511][ T69] ? __lock_release+0x5d/0x170
[ 40.037517][ T69] ? rcu_is_watching+0x12/0xb0
[ 40.037520][ T69] ? kthread_is_per_cpu+0xc0/0xc0
[ 40.037523][ T69] ret_from_fork+0x1db/0x270
[ 40.037526][ T69] ? kthread_is_per_cpu+0xc0/0xc0
[ 40.037529][ T69] ret_from_fork_asm+0x11/0x20
[ 40.037538][ T69]
[ 40.037539][ T69]
[ 40.045400][ T69] Allocated by task 281:
[ 40.045548][ T69] kasan_save_stack+0x24/0x40
[ 40.045768][ T69] kasan_save_track+0x14/0x30
[ 40.045980][ T69] __kasan_kmalloc+0x7b/0x90
[ 40.046185][ T69] __kvmalloc_node_noprof+0x2e5/0x8e0
[ 40.046403][ T69] alloc_netdev_mqs+0x7d/0x1370
[ 40.046613][ T69] __ip_tunnel_create+0x191/0x440
[ 40.046845][ T69] ip_tunnel_init_net+0x16f/0x4e0
[ 40.047081][ T69] ops_init+0x189/0x550
[ 40.047264][ T69] register_pernet_operations+0x31f/0x8b0
[ 40.047493][ T69] register_pernet_device+0x2a/0x60
[ 40.047728][ T69] inet_diag_parse_attrs+0x23/0x160 [inet_diag]
[ 40.048014][ T69] do_one_initcall+0x8c/0x1d0
[ 40.048245][ T69] do_init_module+0x27a/0x860
[ 40.048456][ T69] load_module+0x1d55/0x2850
[ 40.048663][ T69] init_module_from_file+0xe9/0x150
[ 40.048894][ T69] idempotent_init_module+0x331/0x610
[ 40.049105][ T69] __x64_sys_finit_module+0xca/0x150
[ 40.049314][ T69] do_syscall_64+0xc1/0xfd0
[ 40.049550][ T69] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 40.049821][ T69]
[ 40.049929][ T69] Freed by task 69:
[ 40.050095][ T69] kasan_save_stack+0x24/0x40
[ 40.050329][ T69] kasan_save_track+0x14/0x30
[ 40.050584][ T69] __kasan_save_free_info+0x3b/0x60
[ 40.050790][ T69] __kasan_slab_free+0x3f/0x60
[ 40.050991][ T69] kfree+0x21d/0x540
[ 40.051142][ T69] device_release+0x9c/0x210
[ 40.051348][ T69] kobject_cleanup+0xfe/0x360
[ 40.051578][ T69] netdev_run_todo+0x81f/0xc60
[ 40.051815][ T69] ops_undo_list+0x714/0x890
[ 40.052042][ T69] cleanup_net+0x3b2/0x830
[ 40.052259][ T69] process_one_work+0xe35/0x1650
[ 40.052486][ T69] worker_thread+0x591/0xcf0
[ 40.052719][ T69] kthread+0x37b/0x5f0
[ 40.052890][ T69] ret_from_fork+0x1db/0x270
[ 40.053101][ T69] ret_from_fork_asm+0x11/0x20
[ 40.053303][ T69]
[ 40.053413][ T69] The buggy address belongs to the object at ffff88800caa9000
[ 40.053413][ T69] which belongs to the cache kmalloc-4k of size 4096
[ 40.053925][ T69] The buggy address is located 1708 bytes inside of
[ 40.053925][ T69] freed 4096-byte region [ffff88800caa9000, ffff88800caaa000)
[ 40.054425][ T69]
[ 40.054534][ T69] The buggy address belongs to the physical page:
[ 40.054782][ T69] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xcaa8
[ 40.055223][ T69] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[ 40.055555][ T69] flags: 0x80000000000040(head|node=0|zone=1)
[ 40.055801][ T69] page_type: f5(slab)
[ 40.055959][ T69] raw: 0080000000000040 ffff888001043700 ffffea00001fb610 ffffea0000226a10
[ 40.056303][ T69] raw: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 40.056678][ T69] head: 0080000000000040 ffff888001043700 ffffea00001fb610 ffffea0000226a10
[ 40.057144][ T69] head: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 40.057545][ T69] head: 0080000000000003 ffffea000032aa01 00000000ffffffff 00000000ffffffff
[ 40.058095][ T69] head: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
[ 40.058423][ T69] page dumped because: kasan: bad access detected
[ 40.058688][ T69]
[ 40.058784][ T69] Memory state around the buggy address:
[ 40.058992][ T69] ffff88800caa9580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 40.059272][ T69] ffff88800caa9600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 40.059569][ T69] >ffff88800caa9680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 40.059862][ T69] ^
[ 40.060179][ T69] ffff88800caa9700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 40.060527][ T69] ffff88800caa9780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 40.060963][ T69] ==================================================================
[ 40.061578][ T69] Disabling lock debugging due to kernel taint
[ 40.061884][ T69] ------------[ cut here ]------------
[ 40.062101][ T69] refcount_t: underflow; use-after-free.
[ 40.062348][ T69] WARNING: CPU: 3 PID: 69 at lib/refcount.c:28 refcount_warn_saturate+0x16f/0x1b0
[ 40.062859][ T69] Modules linked in: xt_conntrack nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nft_compat nf_tables x_tables inet_diag ipip veth
[ 40.063393][ T69] CPU: 3 UID: 0 PID: 69 Comm: kworker/u16:1 Tainted: G B 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 40.063948][ T69] Tainted: [B]=BAD_PAGE
[ 40.064097][ T69] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 40.064341][ T69] Workqueue: netns cleanup_net
[ 40.064565][ T69] RIP: 0010:refcount_warn_saturate+0x16f/0x1b0
[ 40.064959][ T69] 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 e5 a4 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
[ 40.065815][ T69] RSP: 0000:ffffc900004a7a08 EFLAGS: 00010282
[ 40.066138][ T69] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[ 40.066487][ T69] RDX: 0000000000000002 RSI: 0000000000000004 RDI: 0000000000000001
[ 40.066755][ T69] RBP: 0000000000000003 R08: 0000000000000000 R09: fffffbfff4afe220
[ 40.067135][ T69] R10: 0000000000000003 R11: ffffc900004a7580 R12: 0000000000000001
[ 40.067535][ T69] R13: dffffc0000000000 R14: dead000000000122 R15: dead000000000100
[ 40.067840][ T69] FS: 0000000000000000(0000) GS:ffff88808f76c000(0000) knlGS:0000000000000000
[ 40.068147][ T69] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 40.068384][ T69] CR2: 00007ff9ddc20610 CR3: 0000000030935006 CR4: 0000000000772ef0
[ 40.068678][ T69] PKRU: 55555554
[ 40.068831][ T69] Call Trace:
[ 40.068999][ T69]
[ 40.069116][ T69] netdev_run_todo+0x5f0/0xc60
[ 40.069322][ T69] ? dev_ingress_queue_create+0x190/0x190
[ 40.069621][ T69] ? generic_xdp_install+0x410/0x410
[ 40.069810][ T69] ops_undo_list+0x714/0x890
[ 40.070009][ T69] ? netns_get+0x110/0x110
[ 40.070178][ T69] ? cleanup_net+0x2d6/0x830
[ 40.070486][ T69] cleanup_net+0x3b2/0x830
[ 40.070692][ T69] ? net_passive_dec+0x190/0x190
[ 40.070885][ T69] ? rcu_is_watching+0x12/0xb0
[ 40.071058][ T69] process_one_work+0xe35/0x1650
[ 40.071322][ T69] ? pwq_dec_nr_in_flight+0x550/0x550
[ 40.071508][ T69] ? assign_work+0x168/0x240
[ 40.071697][ T69] worker_thread+0x591/0xcf0
[ 40.071976][ T69] ? rescuer_thread+0xd10/0xd10
[ 40.072237][ T69] kthread+0x37b/0x5f0
[ 40.072389][ T69] ? kthread_is_per_cpu+0xc0/0xc0
[ 40.072597][ T69] ? ret_from_fork+0x1b/0x270
[ 40.072825][ T69] ? __lock_release+0x5d/0x170
[ 40.073011][ T69] ? rcu_is_watching+0x12/0xb0
[ 40.073205][ T69] ? kthread_is_per_cpu+0xc0/0xc0
[ 40.073388][ T69] ret_from_fork+0x1db/0x270
[ 40.073578][ T69] ? kthread_is_per_cpu+0xc0/0xc0
[ 40.073775][ T69] ret_from_fork_asm+0x11/0x20
[ 40.073991][ T69]
[ 40.074145][ T69] irq event stamp: 15567
[ 40.074283][ T69] hardirqs last enabled at (15567): [] irqentry_exit+0x3b/0x80
[ 40.074689][ T69] hardirqs last disabled at (15566): [] handle_softirqs+0x47f/0x610
[ 40.075035][ T69] softirqs last enabled at (15148): [] handle_softirqs+0x352/0x610
[ 40.075398][ T69] softirqs last disabled at (15141): [] irq_exit_rcu+0xab/0x100
[ 40.075787][ T69] ---[ end trace 0000000000000000 ]---