[ 19.061775][ T261] gre: GRE over IPv4 demultiplexer driver
[ 21.232829][ T284] ip_gre: GRE over IPv4 tunneling driver
[ 23.788078][ T68] ==================================================================
[ 23.788383][ T68] BUG: KASAN: slab-use-after-free in kobject_put+0xbb/0xd0
[ 23.788653][ T68] Read of size 1 at addr ffff88800956c6c4 by task kworker/u16:1/68
[ 23.788982][ T68]
[ 23.789095][ T68] CPU: 2 UID: 0 PID: 68 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 23.789100][ T68] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.789103][ T68] Workqueue: netns cleanup_net
[ 23.789116][ T68] Call Trace:
[ 23.789120][ T68]
[ 23.789123][ T68] dump_stack_lvl+0x82/0xc0
[ 23.789129][ T68] print_address_description.constprop.0+0x2c/0x3a0
[ 23.789140][ T68] ? kobject_put+0xbb/0xd0
[ 23.789144][ T68] print_report+0xb4/0x270
[ 23.789147][ T68] ? kobject_put+0xbb/0xd0
[ 23.789150][ T68] ? kasan_addr_to_slab+0x21/0x70
[ 23.789154][ T68] ? kobject_put+0xbb/0xd0
[ 23.789157][ T68] kasan_report+0xca/0x100
[ 23.789160][ T68] ? kobject_put+0xbb/0xd0
[ 23.789166][ T68] kobject_put+0xbb/0xd0
[ 23.789169][ T68] netdev_run_todo+0x5f0/0xc60
[ 23.789177][ T68] ? dev_ingress_queue_create+0x190/0x190
[ 23.789180][ T68] ? generic_xdp_install+0x410/0x410
[ 23.789183][ T68] ? net_generic+0xb1/0x1f0
[ 23.789193][ T68] ops_undo_list+0x714/0x890
[ 23.789198][ T68] ? rtnl_net_dumpid_one+0x270/0x270
[ 23.789202][ T68] ? cleanup_net+0x2d6/0x8b0
[ 23.789207][ T68] cleanup_net+0x3b2/0x8b0
[ 23.789212][ T68] ? net_passive_dec+0x190/0x190
[ 23.789216][ T68] ? rcu_is_watching+0x12/0xb0
[ 23.789226][ T68] process_one_work+0xe35/0x1650
[ 23.789241][ T68] ? pwq_dec_nr_in_flight+0x550/0x550
[ 23.789249][ T68] ? assign_work+0x168/0x240
[ 23.789253][ T68] worker_thread+0x591/0xcf0
[ 23.789259][ T68] ? rescuer_thread+0xd10/0xd10
[ 23.789263][ T68] kthread+0x37b/0x5f0
[ 23.789268][ T68] ? kthread_is_per_cpu+0xc0/0xc0
[ 23.789270][ T68] ? ret_from_fork+0x1b/0x270
[ 23.789276][ T68] ? __lock_release+0x5d/0x170
[ 23.789280][ T68] ? rcu_is_watching+0x12/0xb0
[ 23.789283][ T68] ? kthread_is_per_cpu+0xc0/0xc0
[ 23.789287][ T68] ret_from_fork+0x1db/0x270
[ 23.789290][ T68] ? kthread_is_per_cpu+0xc0/0xc0
[ 23.789293][ T68] ret_from_fork_asm+0x11/0x20
[ 23.789303][ T68]
[ 23.789304][ T68]
[ 23.796411][ T68] Allocated by task 284:
[ 23.796538][ T68] kasan_save_stack+0x24/0x40
[ 23.796722][ T68] kasan_save_track+0x14/0x30
[ 23.796941][ T68] __kasan_kmalloc+0x7b/0x90
[ 23.797128][ T68] __kvmalloc_node_noprof+0x2e5/0x8e0
[ 23.797311][ T68] alloc_netdev_mqs+0x7d/0x1370
[ 23.797490][ T68] __ip_tunnel_create+0x191/0x440
[ 23.797664][ T68] ip_tunnel_init_net+0x16f/0x4e0
[ 23.797851][ T68] ops_init+0x189/0x550
[ 23.797988][ T68] register_pernet_operations+0x31f/0x8b0
[ 23.798180][ T68] register_pernet_device+0x2a/0x60
[ 23.798357][ T68] 0xffffffffc0611051
[ 23.798488][ T68] do_one_initcall+0x8c/0x1d0
[ 23.798663][ T68] do_init_module+0x27a/0x860
[ 23.798842][ T68] load_module+0x1f40/0x2dd0
[ 23.799043][ T68] init_module_from_file+0xe9/0x150
[ 23.799256][ T68] idempotent_init_module+0x331/0x610
[ 23.799429][ T68] __x64_sys_finit_module+0xca/0x150
[ 23.799607][ T68] do_syscall_64+0xc1/0xfd0
[ 23.799807][ T68] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 23.800048][ T68]
[ 23.800138][ T68] Freed by task 68:
[ 23.800289][ T68] kasan_save_stack+0x24/0x40
[ 23.800458][ T68] kasan_save_track+0x14/0x30
[ 23.800625][ T68] __kasan_save_free_info+0x3b/0x60
[ 23.800815][ T68] __kasan_slab_free+0x3f/0x60
[ 23.801007][ T68] kfree+0x21d/0x540
[ 23.801174][ T68] device_release+0x9c/0x210
[ 23.801347][ T68] kobject_cleanup+0xfe/0x360
[ 23.801532][ T68] netdev_run_todo+0x81f/0xc60
[ 23.801708][ T68] ops_undo_list+0x714/0x890
[ 23.801898][ T68] cleanup_net+0x3b2/0x8b0
[ 23.802088][ T68] process_one_work+0xe35/0x1650
[ 23.802271][ T68] worker_thread+0x591/0xcf0
[ 23.802447][ T68] kthread+0x37b/0x5f0
[ 23.802577][ T68] ret_from_fork+0x1db/0x270
[ 23.802749][ T68] ret_from_fork_asm+0x11/0x20
[ 23.802935][ T68]
[ 23.803031][ T68] The buggy address belongs to the object at ffff88800956c000
[ 23.803031][ T68] which belongs to the cache kmalloc-4k of size 4096
[ 23.803447][ T68] The buggy address is located 1732 bytes inside of
[ 23.803447][ T68] freed 4096-byte region [ffff88800956c000, ffff88800956d000)
[ 23.803865][ T68]
[ 23.803955][ T68] The buggy address belongs to the physical page:
[ 23.804186][ T68] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x9568
[ 23.804502][ T68] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[ 23.804763][ T68] flags: 0x80000000000040(head|node=0|zone=1)
[ 23.804994][ T68] page_type: f5(slab)
[ 23.805180][ T68] raw: 0080000000000040 ffff888001043700 ffffea00003e2c10 ffffea00003e2e10
[ 23.805506][ T68] raw: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 23.805807][ T68] head: 0080000000000040 ffff888001043700 ffffea00003e2c10 ffffea00003e2e10
[ 23.806154][ T68] head: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 23.806466][ T68] head: 0080000000000003 ffffea0000255a01 00000000ffffffff 00000000ffffffff
[ 23.806783][ T68] head: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
[ 23.807144][ T68] page dumped because: kasan: bad access detected
[ 23.807369][ T68]
[ 23.807458][ T68] Memory state around the buggy address:
[ 23.807649][ T68] ffff88800956c580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 23.807908][ T68] ffff88800956c600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 23.808175][ T68] >ffff88800956c680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 23.808442][ T68] ^
[ 23.808662][ T68] ffff88800956c700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 23.808915][ T68] ffff88800956c780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 23.809171][ T68] ==================================================================
[ 23.809824][ T68] Disabling lock debugging due to kernel taint
[ 23.810095][ T68] ------------[ cut here ]------------
[ 23.810321][ T68] refcount_t: underflow; use-after-free.
[ 23.810539][ T68] WARNING: CPU: 2 PID: 68 at lib/refcount.c:28 refcount_warn_saturate+0x16f/0x1b0
[ 23.810873][ T68] Modules linked in: ip_gre gre
[ 23.811091][ T68] CPU: 2 UID: 0 PID: 68 Comm: kworker/u16:1 Tainted: G B 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 23.811543][ T68] Tainted: [B]=BAD_PAGE
[ 23.811706][ T68] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.811954][ T68] Workqueue: netns cleanup_net
[ 23.812180][ T68] RIP: 0010:refcount_warn_saturate+0x16f/0x1b0
[ 23.812450][ T68] 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 c5 b9 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
[ 23.813110][ T68] RSP: 0018:ffffc90000497a08 EFLAGS: 00010282
[ 23.813355][ T68] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[ 23.813640][ T68] RDX: 0000000000000002 RSI: 0000000000000004 RDI: 0000000000000001
[ 23.813917][ T68] RBP: 0000000000000003 R08: 0000000000000000 R09: fffffbfff7580934
[ 23.814209][ T68] R10: 0000000000000003 R11: ffffc90000497580 R12: 0000000000000001
[ 23.814494][ T68] R13: dffffc0000000000 R14: dead000000000122 R15: dead000000000100
[ 23.814765][ T68] FS: 0000000000000000(0000) GS:ffff8880b1008000(0000) knlGS:0000000000000000
[ 23.815105][ T68] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 23.815354][ T68] CR2: 00007f665738d050 CR3: 000000000e554005 CR4: 0000000000772ef0
[ 23.815643][ T68] PKRU: 55555554
[ 23.815793][ T68] Call Trace:
[ 23.815955][ T68]
[ 23.816078][ T68] netdev_run_todo+0x5f0/0xc60
[ 23.816287][ T68] ? dev_ingress_queue_create+0x190/0x190
[ 23.816494][ T68] ? generic_xdp_install+0x410/0x410
[ 23.816685][ T68] ? net_generic+0xb1/0x1f0
[ 23.816905][ T68] ops_undo_list+0x714/0x890
[ 23.817214][ T68] ? rtnl_net_dumpid_one+0x270/0x270
[ 23.817399][ T68] ? cleanup_net+0x2d6/0x8b0
[ 23.817601][ T68] cleanup_net+0x3b2/0x8b0
[ 23.817886][ T68] ? net_passive_dec+0x190/0x190
[ 23.818089][ T68] ? rcu_is_watching+0x12/0xb0
[ 23.818294][ T68] process_one_work+0xe35/0x1650
[ 23.818494][ T68] ? pwq_dec_nr_in_flight+0x550/0x550
[ 23.818698][ T68] ? assign_work+0x168/0x240
[ 23.818899][ T68] worker_thread+0x591/0xcf0
[ 23.819102][ T68] ? rescuer_thread+0xd10/0xd10
[ 23.819390][ T68] kthread+0x37b/0x5f0
[ 23.819540][ T68] ? kthread_is_per_cpu+0xc0/0xc0
[ 23.819820][ T68] ? ret_from_fork+0x1b/0x270
[ 23.820021][ T68] ? __lock_release+0x5d/0x170
[ 23.820229][ T68] ? rcu_is_watching+0x12/0xb0
[ 23.820507][ T68] ? kthread_is_per_cpu+0xc0/0xc0
[ 23.820792][ T68] ret_from_fork+0x1db/0x270
[ 23.821085][ T68] ? kthread_is_per_cpu+0xc0/0xc0
[ 23.821285][ T68] ret_from_fork_asm+0x11/0x20
[ 23.821477][ T68]
[ 23.821630][ T68] irq event stamp: 28633
[ 23.821784][ T68] hardirqs last enabled at (28633): [] finish_task_switch.isra.0+0x245/0x960
[ 23.822183][ T68] hardirqs last disabled at (28632): [] __schedule+0x94a/0x1b10
[ 23.822599][ T68] softirqs last enabled at (27680): [] handle_softirqs+0x352/0x610
[ 23.822931][ T68] softirqs last disabled at (27167): [] irq_exit_rcu+0xab/0x100
[ 23.823353][ T68] ---[ end trace 0000000000000000 ]---
[ 62.881841][ T864] ip6_gre: GRE over IPv6 tunneling driver
[ 91.565347][ C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 95.789321][ C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 99.502278][ C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 103.597335][ C1] ip6_tunnel: tep0 xmit: Local address not yet configured!