[ 14.633066][ T261] ip (261) used greatest stack depth: 23552 bytes left
[ 15.521811][ T268] gre: GRE over IPv4 demultiplexer driver
[ 15.551445][ T268] ip_gre: GRE over IPv4 tunneling driver
[ 17.270375][ T294] ==================================================================
[ 17.270749][ T294] BUG: KASAN: slab-use-after-free in kobject_put+0xbb/0xd0
[ 17.271019][ T294] Read of size 1 at addr ffff88800e8346c4 by task ip/294
[ 17.271221][ T294]
[ 17.271312][ T294] CPU: 2 UID: 0 PID: 294 Comm: ip Not tainted 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 17.271317][ T294] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 17.271320][ T294] Call Trace:
[ 17.271322][ T294]
[ 17.271325][ T294] dump_stack_lvl+0x82/0xc0
[ 17.271331][ T294] print_address_description.constprop.0+0x2c/0x3a0
[ 17.271345][ T294] ? kobject_put+0xbb/0xd0
[ 17.271349][ T294] print_report+0xb4/0x270
[ 17.271353][ T294] ? kobject_put+0xbb/0xd0
[ 17.271355][ T294] ? kasan_addr_to_slab+0x21/0x70
[ 17.271359][ T294] ? kobject_put+0xbb/0xd0
[ 17.271362][ T294] kasan_report+0xca/0x100
[ 17.271366][ T294] ? kobject_put+0xbb/0xd0
[ 17.271372][ T294] kobject_put+0xbb/0xd0
[ 17.271375][ T294] netdev_run_todo+0x5f0/0xc60
[ 17.271388][ T294] ? dev_ingress_queue_create+0x190/0x190
[ 17.271391][ T294] ? generic_xdp_install+0x410/0x410
[ 17.271395][ T294] ? unregister_netdevice_many+0x20/0x20
[ 17.271398][ T294] ? net_generic+0xb1/0x1f0
[ 17.271406][ T294] ? net_generic+0xbb/0x1f0
[ 17.271411][ T294] rtnl_dellink+0x350/0xa30
[ 17.271417][ T294] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 17.271436][ T294] ? find_held_lock+0x2b/0x80
[ 17.271451][ T294] ? __lock_acquire+0x449/0x7e0
[ 17.271456][ T294] ? find_held_lock+0x2b/0x80
[ 17.271460][ T294] ? rtnetlink_rcv_msg+0x6e6/0xc00
[ 17.271463][ T294] ? __lock_release+0x5d/0x170
[ 17.271467][ T294] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 17.271471][ T294] rtnetlink_rcv_msg+0x709/0xc00
[ 17.271475][ T294] ? rtnl_port_fill+0x890/0x890
[ 17.271478][ T294] ? __lock_acquire+0x449/0x7e0
[ 17.271484][ T294] netlink_rcv_skb+0x121/0x340
[ 17.271489][ T294] ? rtnl_port_fill+0x890/0x890
[ 17.271493][ T294] ? netlink_ack+0xdf0/0xdf0
[ 17.271499][ T294] ? netlink_deliver_tap+0x13e/0x340
[ 17.271502][ T294] ? netlink_deliver_tap+0xc3/0x340
[ 17.271505][ T294] netlink_unicast+0x4aa/0x780
[ 17.271509][ T294] ? netlink_attachskb+0x810/0x810
[ 17.271513][ T294] ? __lock_acquire+0x449/0x7e0
[ 17.271518][ T294] netlink_sendmsg+0x714/0xbd0
[ 17.271522][ T294] ? netlink_unicast+0x780/0x780
[ 17.271525][ T294] ? __import_iovec+0x230/0x3b0
[ 17.271537][ T294] ? netlink_unicast+0x780/0x780
[ 17.271540][ T294] ____sys_sendmsg+0x3dd/0x890
[ 17.271546][ T294] ? get_timestamp.constprop.0+0x370/0x370
[ 17.271548][ T294] ? __copy_msghdr+0x3c0/0x3c0
[ 17.271556][ T294] ___sys_sendmsg+0xed/0x170
[ 17.271559][ T294] ? kasan_record_aux_stack+0x8c/0xa0
[ 17.271563][ T294] ? __call_rcu_common.constprop.0+0xa8/0x630
[ 17.271570][ T294] ? copy_msghdr_from_user+0x110/0x110
[ 17.271574][ T294] ? find_held_lock+0x2b/0x80
[ 17.271579][ T294] ? __lock_acquire+0x449/0x7e0
[ 17.271583][ T294] ? find_held_lock+0x2b/0x80
[ 17.271587][ T294] ? __virt_addr_valid+0x22a/0x450
[ 17.271603][ T294] ? __lock_release+0x5d/0x170
[ 17.271608][ T294] __sys_sendmsg+0x10b/0x1a0
[ 17.271611][ T294] ? __call_rcu_common.constprop.0+0x318/0x630
[ 17.271614][ T294] ? __sys_sendmsg_sock+0x20/0x20
[ 17.271621][ T294] ? rcu_is_watching+0x12/0xb0
[ 17.271628][ T294] do_syscall_64+0xc1/0xfd0
[ 17.271634][ T294] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 17.271644][ T294] RIP: 0033:0x7f1f1e1831d7
[ 17.271649][ T294] Code: 0e 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10
[ 17.271652][ T294] RSP: 002b:00007ffcea3ca008 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 17.271658][ T294] RAX: ffffffffffffffda RBX: 00007ffcea3ca740 RCX: 00007f1f1e1831d7
[ 17.271661][ T294] RDX: 0000000000000000 RSI: 00007ffcea3ca070 RDI: 0000000000000005
[ 17.271663][ T294] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078
[ 17.271665][ T294] R10: 00007f1f1e07f510 R11: 0000000000000246 R12: 0000000000000002
[ 17.271667][ T294] R13: 00000000690e067f R14: 0000000000499600 R15: 0000000000000000
[ 17.271673][ T294]
[ 17.271674][ T294]
[ 17.283886][ T294] Allocated by task 267:
[ 17.284011][ T294] kasan_save_stack+0x24/0x40
[ 17.284184][ T294] kasan_save_track+0x14/0x30
[ 17.284354][ T294] __kasan_kmalloc+0x7b/0x90
[ 17.284516][ T294] __kvmalloc_node_noprof+0x2e5/0x8e0
[ 17.284686][ T294] alloc_netdev_mqs+0x7d/0x1370
[ 17.284851][ T294] rtnl_create_link+0xa9e/0xe20
[ 17.285015][ T294] rtnl_newlink_create+0x203/0x8f0
[ 17.285179][ T294] __rtnl_newlink+0x231/0xa30
[ 17.285342][ T294] rtnl_newlink+0x693/0xa60
[ 17.285507][ T294] rtnetlink_rcv_msg+0x709/0xc00
[ 17.285676][ T294] netlink_rcv_skb+0x121/0x340
[ 17.285839][ T294] netlink_unicast+0x4aa/0x780
[ 17.286000][ T294] netlink_sendmsg+0x714/0xbd0
[ 17.286160][ T294] ____sys_sendmsg+0x3dd/0x890
[ 17.286326][ T294] ___sys_sendmsg+0xed/0x170
[ 17.286489][ T294] __sys_sendmsg+0x10b/0x1a0
[ 17.286653][ T294] do_syscall_64+0xc1/0xfd0
[ 17.286819][ T294] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 17.287030][ T294]
[ 17.287113][ T294] Freed by task 294:
[ 17.287235][ T294] kasan_save_stack+0x24/0x40
[ 17.287412][ T294] kasan_save_track+0x14/0x30
[ 17.287580][ T294] __kasan_save_free_info+0x3b/0x60
[ 17.287744][ T294] __kasan_slab_free+0x3f/0x60
[ 17.287908][ T294] kfree+0x21d/0x540
[ 17.288026][ T294] device_release+0x9c/0x210
[ 17.288197][ T294] kobject_cleanup+0xfe/0x360
[ 17.288363][ T294] netdev_run_todo+0x81f/0xc60
[ 17.288529][ T294] rtnl_dellink+0x350/0xa30
[ 17.288689][ T294] rtnetlink_rcv_msg+0x709/0xc00
[ 17.288851][ T294] netlink_rcv_skb+0x121/0x340
[ 17.289010][ T294] netlink_unicast+0x4aa/0x780
[ 17.289171][ T294] netlink_sendmsg+0x714/0xbd0
[ 17.289331][ T294] ____sys_sendmsg+0x3dd/0x890
[ 17.289494][ T294] ___sys_sendmsg+0xed/0x170
[ 17.289659][ T294] __sys_sendmsg+0x10b/0x1a0
[ 17.289833][ T294] do_syscall_64+0xc1/0xfd0
[ 17.290008][ T294] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 17.290209][ T294]
[ 17.290290][ T294] The buggy address belongs to the object at ffff88800e834000
[ 17.290290][ T294] which belongs to the cache kmalloc-4k of size 4096
[ 17.290679][ T294] The buggy address is located 1732 bytes inside of
[ 17.290679][ T294] freed 4096-byte region [ffff88800e834000, ffff88800e835000)
[ 17.291070][ T294]
[ 17.291151][ T294] The buggy address belongs to the physical page:
[ 17.291349][ T294] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe830
[ 17.291637][ T294] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[ 17.291886][ T294] flags: 0x80000000000040(head|node=0|zone=1)
[ 17.292102][ T294] page_type: f5(slab)
[ 17.292235][ T294] raw: 0080000000000040 ffff888001043700 ffffea00003a0e10 ffffea00002cac10
[ 17.292521][ T294] raw: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 17.292809][ T294] head: 0080000000000040 ffff888001043700 ffffea00003a0e10 ffffea00002cac10
[ 17.293101][ T294] head: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 17.293388][ T294] head: 0080000000000003 ffffea00003a0c01 00000000ffffffff 00000000ffffffff
[ 17.293676][ T294] head: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
[ 17.293962][ T294] page dumped because: kasan: bad access detected
[ 17.294165][ T294]
[ 17.294251][ T294] Memory state around the buggy address:
[ 17.294408][ T294] ffff88800e834580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 17.294645][ T294] ffff88800e834600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 17.294878][ T294] >ffff88800e834680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 17.295114][ T294] ^
[ 17.295316][ T294] ffff88800e834700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 17.295549][ T294] ffff88800e834780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 17.295781][ T294] ==================================================================
[ 17.296176][ T294] Disabling lock debugging due to kernel taint
[ 17.296400][ T294] ------------[ cut here ]------------
[ 17.296576][ T294] refcount_t: underflow; use-after-free.
[ 17.296806][ T294] WARNING: CPU: 2 PID: 294 at lib/refcount.c:28 refcount_warn_saturate+0x16f/0x1b0
[ 17.297107][ T294] Modules linked in: ip_gre gre
[ 17.297298][ T294] CPU: 2 UID: 0 PID: 294 Comm: ip Tainted: G B 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 17.297651][ T294] Tainted: [B]=BAD_PAGE
[ 17.297806][ T294] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 17.298028][ T294] RIP: 0010:refcount_warn_saturate+0x16f/0x1b0
[ 17.298257][ T294] 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 25 bc 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
[ 17.298851][ T294] RSP: 0018:ffffc900005571f0 EFLAGS: 00010286
[ 17.299074][ T294] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[ 17.299331][ T294] RDX: 0000000000000002 RSI: 0000000000000004 RDI: 0000000000000001
[ 17.299590][ T294] RBP: 0000000000000003 R08: 0000000000000000 R09: fffffbfff7a40934
[ 17.299855][ T294] R10: 0000000000000003 R11: ffffc90000556d80 R12: 0000000000000001
[ 17.300120][ T294] R13: dffffc0000000000 R14: dead000000000122 R15: dead000000000100
[ 17.300383][ T294] FS: 00007f1f1dfb5800(0000) GS:ffff8880aea08000(0000) knlGS:0000000000000000
[ 17.300681][ T294] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 17.300912][ T294] CR2: 00000000004e6798 CR3: 0000000009b4d006 CR4: 0000000000772ef0
[ 17.301180][ T294] PKRU: 55555554
[ 17.301321][ T294] Call Trace:
[ 17.301463][ T294]
[ 17.301567][ T294] netdev_run_todo+0x5f0/0xc60
[ 17.301760][ T294] ? dev_ingress_queue_create+0x190/0x190
[ 17.301940][ T294] ? generic_xdp_install+0x410/0x410
[ 17.302119][ T294] ? unregister_netdevice_many+0x20/0x20
[ 17.302298][ T294] ? net_generic+0xb1/0x1f0
[ 17.302489][ T294] ? net_generic+0xbb/0x1f0
[ 17.302670][ T294] rtnl_dellink+0x350/0xa30
[ 17.302856][ T294] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 17.303085][ T294] ? find_held_lock+0x2b/0x80
[ 17.303271][ T294] ? __lock_acquire+0x449/0x7e0
[ 17.303452][ T294] ? find_held_lock+0x2b/0x80
[ 17.303630][ T294] ? rtnetlink_rcv_msg+0x6e6/0xc00
[ 17.303824][ T294] ? __lock_release+0x5d/0x170
[ 17.304004][ T294] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 17.304220][ T294] rtnetlink_rcv_msg+0x709/0xc00
[ 17.304402][ T294] ? rtnl_port_fill+0x890/0x890
[ 17.304583][ T294] ? __lock_acquire+0x449/0x7e0
[ 17.304773][ T294] netlink_rcv_skb+0x121/0x340
[ 17.304953][ T294] ? rtnl_port_fill+0x890/0x890
[ 17.305130][ T294] ? netlink_ack+0xdf0/0xdf0
[ 17.305320][ T294] ? netlink_deliver_tap+0x13e/0x340
[ 17.305496][ T294] ? netlink_deliver_tap+0xc3/0x340
[ 17.305676][ T294] netlink_unicast+0x4aa/0x780
[ 17.305862][ T294] ? netlink_attachskb+0x810/0x810
[ 17.306042][ T294] ? __lock_acquire+0x449/0x7e0
[ 17.306223][ T294] netlink_sendmsg+0x714/0xbd0
[ 17.306405][ T294] ? netlink_unicast+0x780/0x780
[ 17.306590][ T294] ? __import_iovec+0x230/0x3b0
[ 17.306780][ T294] ? netlink_unicast+0x780/0x780
[ 17.306957][ T294] ____sys_sendmsg+0x3dd/0x890
[ 17.307137][ T294] ? get_timestamp.constprop.0+0x370/0x370
[ 17.307351][ T294] ? __copy_msghdr+0x3c0/0x3c0
[ 17.307542][ T294] ___sys_sendmsg+0xed/0x170
[ 17.307723][ T294] ? kasan_record_aux_stack+0x8c/0xa0
[ 17.307914][ T294] ? __call_rcu_common.constprop.0+0xa8/0x630
[ 17.308140][ T294] ? copy_msghdr_from_user+0x110/0x110
[ 17.308321][ T294] ? find_held_lock+0x2b/0x80
[ 17.308501][ T294] ? __lock_acquire+0x449/0x7e0
[ 17.308683][ T294] ? find_held_lock+0x2b/0x80
[ 17.308870][ T294] ? __virt_addr_valid+0x22a/0x450
[ 17.309050][ T294] ? __lock_release+0x5d/0x170
[ 17.309230][ T294] __sys_sendmsg+0x10b/0x1a0
[ 17.309413][ T294] ? __call_rcu_common.constprop.0+0x318/0x630
[ 17.309725][ T294] ? __sys_sendmsg_sock+0x20/0x20
[ 17.309917][ T294] ? rcu_is_watching+0x12/0xb0
[ 17.310099][ T294] do_syscall_64+0xc1/0xfd0
[ 17.310284][ T294] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 17.310591][ T294] RIP: 0033:0x7f1f1e1831d7
[ 17.310785][ T294] Code: 0e 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10
[ 17.311466][ T294] RSP: 002b:00007ffcea3ca008 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 17.311724][ T294] RAX: ffffffffffffffda RBX: 00007ffcea3ca740 RCX: 00007f1f1e1831d7
[ 17.312084][ T294] RDX: 0000000000000000 RSI: 00007ffcea3ca070 RDI: 0000000000000005
[ 17.312347][ T294] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078
[ 17.312603][ T294] R10: 00007f1f1e07f510 R11: 0000000000000246 R12: 0000000000000002
[ 17.312866][ T294] R13: 00000000690e067f R14: 0000000000499600 R15: 0000000000000000
[ 17.313130][ T294]
[ 17.313275][ T294] irq event stamp: 45043
[ 17.313424][ T294] hardirqs last enabled at (45043): [] irqentry_exit+0x3b/0x80
[ 17.313838][ T294] hardirqs last disabled at (45042): [] handle_softirqs+0x47f/0x610
[ 17.314135][ T294] softirqs last enabled at (44850): [] handle_softirqs+0x352/0x610
[ 17.314523][ T294] softirqs last disabled at (44843): [] irq_exit_rcu+0xab/0x100
[ 17.314833][ T294] ---[ end trace 0000000000000000 ]---
[ 40.760579][ T762] ip6_gre: GRE over IPv6 tunneling driver