[ 15.340659][ T251] ip (251) used greatest stack depth: 23696 bytes left
[ 22.905262][ T340] 8021q: 802.1Q VLAN Support v1.8
[ 23.393323][ T345] gre: GRE over IPv4 demultiplexer driver
[ 23.468178][ T345] ip6_gre: GRE over IPv6 tunneling driver
[ 34.887836][ T422] GACT probability NOT on
[ 58.918427][ T638] ==================================================================
[ 58.918757][ T638] BUG: KASAN: slab-use-after-free in kobject_put+0xbb/0xd0
[ 58.919043][ T638] Read of size 1 at addr ffff8880089f46ac by task ip/638
[ 58.919263][ T638]
[ 58.919357][ T638] CPU: 1 UID: 0 PID: 638 Comm: ip Not tainted 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 58.919362][ T638] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 58.919368][ T638] Call Trace:
[ 58.919370][ T638]
[ 58.919372][ T638] dump_stack_lvl+0x82/0xc0
[ 58.919378][ T638] print_address_description.constprop.0+0x2c/0x3a0
[ 58.919389][ T638] ? kobject_put+0xbb/0xd0
[ 58.919393][ T638] print_report+0xb4/0x270
[ 58.919396][ T638] ? kobject_put+0xbb/0xd0
[ 58.919399][ T638] ? kasan_addr_to_slab+0x21/0x70
[ 58.919403][ T638] ? kobject_put+0xbb/0xd0
[ 58.919406][ T638] kasan_report+0xca/0x100
[ 58.919410][ T638] ? kobject_put+0xbb/0xd0
[ 58.919415][ T638] kobject_put+0xbb/0xd0
[ 58.919419][ T638] netdev_run_todo+0x5f0/0xc60
[ 58.919425][ T638] ? dev_ingress_queue_create+0x190/0x190
[ 58.919428][ T638] ? generic_xdp_install+0x410/0x410
[ 58.919431][ T638] ? unregister_netdevice_many+0x20/0x20
[ 58.919435][ T638] ? net_generic+0xbb/0x1f0 [ip6_gre]
[ 58.919443][ T638] rtnl_dellink+0x350/0xa30
[ 58.919449][ T638] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 58.919468][ T638] ? find_held_lock+0x2b/0x80
[ 58.919476][ T638] ? __lock_acquire+0x449/0x7e0
[ 58.919482][ T638] ? find_held_lock+0x2b/0x80
[ 58.919486][ T638] ? rtnetlink_rcv_msg+0x6e6/0xc00
[ 58.919488][ T638] ? __lock_release+0x5d/0x170
[ 58.919493][ T638] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 58.919497][ T638] rtnetlink_rcv_msg+0x709/0xc00
[ 58.919501][ T638] ? rtnl_port_fill+0x850/0x850
[ 58.919504][ T638] ? __lock_acquire+0x449/0x7e0
[ 58.919511][ T638] netlink_rcv_skb+0x121/0x340
[ 58.919516][ T638] ? rtnl_port_fill+0x850/0x850
[ 58.919519][ T638] ? netlink_ack+0xdd0/0xdd0
[ 58.919526][ T638] ? netlink_deliver_tap+0x13e/0x340
[ 58.919529][ T638] ? netlink_deliver_tap+0xc3/0x340
[ 58.919533][ T638] netlink_unicast+0x4aa/0x780
[ 58.919537][ T638] ? netlink_attachskb+0x810/0x810
[ 58.919540][ T638] ? __lock_acquire+0x449/0x7e0
[ 58.919546][ T638] netlink_sendmsg+0x714/0xbd0
[ 58.919552][ T638] ? netlink_unicast+0x780/0x780
[ 58.919556][ T638] ? __import_iovec+0x230/0x3b0
[ 58.919563][ T638] ? netlink_unicast+0x780/0x780
[ 58.919567][ T638] ____sys_sendmsg+0x3dd/0x890
[ 58.919573][ T638] ? get_timestamp.constprop.0+0x380/0x380
[ 58.919576][ T638] ? __copy_msghdr+0x3c0/0x3c0
[ 58.919583][ T638] ___sys_sendmsg+0xed/0x170
[ 58.919586][ T638] ? kasan_record_aux_stack+0x8c/0xa0
[ 58.919589][ T638] ? __call_rcu_common.constprop.0+0xa8/0x630
[ 58.919596][ T638] ? copy_msghdr_from_user+0x110/0x110
[ 58.919601][ T638] ? find_held_lock+0x2b/0x80
[ 58.919605][ T638] ? __lock_acquire+0x449/0x7e0
[ 58.919612][ T638] ? find_held_lock+0x2b/0x80
[ 58.919617][ T638] ? __virt_addr_valid+0x22a/0x450
[ 58.919627][ T638] ? __lock_release+0x5d/0x170
[ 58.919633][ T638] __sys_sendmsg+0x10b/0x1a0
[ 58.919637][ T638] ? __call_rcu_common.constprop.0+0x318/0x630
[ 58.919640][ T638] ? __sys_sendmsg_sock+0x20/0x20
[ 58.919648][ T638] ? rcu_is_watching+0x12/0xb0
[ 58.919652][ T638] do_syscall_64+0xc1/0xfd0
[ 58.919660][ T638] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 58.919664][ T638] RIP: 0033:0x7fad4c4241d7
[ 58.919669][ T638] 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
[ 58.919672][ T638] RSP: 002b:00007ffc98cddc28 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 58.919677][ T638] RAX: ffffffffffffffda RBX: 00007ffc98cde350 RCX: 00007fad4c4241d7
[ 58.919679][ T638] RDX: 0000000000000000 RSI: 00007ffc98cddc90 RDI: 0000000000000005
[ 58.919681][ T638] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078
[ 58.919683][ T638] R10: 00007fad4c320f60 R11: 0000000000000246 R12: 0000000000000002
[ 58.919685][ T638] R13: 00000000690df836 R14: 0000000000499600 R15: 0000000000000000
[ 58.919691][ T638]
[ 58.919693][ T638]
[ 58.932525][ T638] Allocated by task 373:
[ 58.932667][ T638] kasan_save_stack+0x24/0x40
[ 58.932848][ T638] kasan_save_track+0x14/0x30
[ 58.933017][ T638] __kasan_kmalloc+0x7b/0x90
[ 58.933201][ T638] __kvmalloc_node_noprof+0x2e5/0x8e0
[ 58.933376][ T638] alloc_netdev_mqs+0x7d/0x1370
[ 58.933550][ T638] rtnl_create_link+0xa9e/0xe20
[ 58.933728][ T638] rtnl_newlink_create+0x203/0x770
[ 58.933900][ T638] __rtnl_newlink+0x231/0xa30
[ 58.934071][ T638] rtnl_newlink+0x693/0xa60
[ 58.934242][ T638] rtnetlink_rcv_msg+0x709/0xc00
[ 58.934414][ T638] netlink_rcv_skb+0x121/0x340
[ 58.934594][ T638] netlink_unicast+0x4aa/0x780
[ 58.934772][ T638] netlink_sendmsg+0x714/0xbd0
[ 58.934944][ T638] ____sys_sendmsg+0x3dd/0x890
[ 58.935117][ T638] ___sys_sendmsg+0xed/0x170
[ 58.935288][ T638] __sys_sendmsg+0x10b/0x1a0
[ 58.935460][ T638] do_syscall_64+0xc1/0xfd0
[ 58.935640][ T638] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 58.935852][ T638]
[ 58.935948][ T638] Freed by task 638:
[ 58.936077][ T638] kasan_save_stack+0x24/0x40
[ 58.936259][ T638] kasan_save_track+0x14/0x30
[ 58.936429][ T638] __kasan_save_free_info+0x3b/0x60
[ 58.936602][ T638] __kasan_slab_free+0x3f/0x60
[ 58.936882][ T638] kfree+0x21d/0x540
[ 58.937010][ T638] device_release+0x9c/0x210
[ 58.937185][ T638] kobject_cleanup+0xfe/0x360
[ 58.937380][ T638] netdev_run_todo+0x81f/0xc60
[ 58.937653][ T638] rtnl_dellink+0x350/0xa30
[ 58.937822][ T638] rtnetlink_rcv_msg+0x709/0xc00
[ 58.937990][ T638] netlink_rcv_skb+0x121/0x340
[ 58.938161][ T638] netlink_unicast+0x4aa/0x780
[ 58.938427][ T638] netlink_sendmsg+0x714/0xbd0
[ 58.938597][ T638] ____sys_sendmsg+0x3dd/0x890
[ 58.938776][ T638] ___sys_sendmsg+0xed/0x170
[ 58.938955][ T638] __sys_sendmsg+0x10b/0x1a0
[ 58.939221][ T638] do_syscall_64+0xc1/0xfd0
[ 58.939394][ T638] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 58.939604][ T638]
[ 58.939698][ T638] The buggy address belongs to the object at ffff8880089f4000
[ 58.939698][ T638] which belongs to the cache kmalloc-4k of size 4096
[ 58.940210][ T638] The buggy address is located 1708 bytes inside of
[ 58.940210][ T638] freed 4096-byte region [ffff8880089f4000, ffff8880089f5000)
[ 58.940728][ T638]
[ 58.940814][ T638] The buggy address belongs to the physical page:
[ 58.941030][ T638] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x89f0
[ 58.941336][ T638] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[ 58.941711][ T638] flags: 0x80000000000040(head|node=0|zone=1)
[ 58.941935][ T638] page_type: f5(slab)
[ 58.942071][ T638] raw: 0080000000000040 ffff888001043700 ffffea00002f1a10 ffffea000013b010
[ 58.942481][ T638] raw: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 58.942791][ T638] head: 0080000000000040 ffff888001043700 ffffea00002f1a10 ffffea000013b010
[ 58.943203][ T638] head: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 58.943504][ T638] head: 0080000000000003 ffffea0000227c01 00000000ffffffff 00000000ffffffff
[ 58.943908][ T638] head: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
[ 58.944211][ T638] page dumped because: kasan: bad access detected
[ 58.944430][ T638]
[ 58.944516][ T638] Memory state around the buggy address:
[ 58.944791][ T638] ffff8880089f4580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 58.945045][ T638] ffff8880089f4600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 58.945291][ T638] >ffff8880089f4680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 58.945634][ T638] ^
[ 58.945808][ T638] ffff8880089f4700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 58.946054][ T638] ffff8880089f4780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 58.946393][ T638] ==================================================================
[ 58.947074][ T638] Disabling lock debugging due to kernel taint
[ 58.947460][ T638] ------------[ cut here ]------------
[ 58.947680][ T638] refcount_t: underflow; use-after-free.
[ 58.947892][ T638] WARNING: CPU: 3 PID: 638 at lib/refcount.c:28 refcount_warn_saturate+0x16f/0x1b0
[ 58.948253][ T638] Modules linked in: act_gact cls_flower sch_ingress ip6_gre ip6_tunnel tunnel6 gre 8021q vrf veth
[ 58.948671][ T638] CPU: 3 UID: 0 PID: 638 Comm: ip Tainted: G B 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 58.949095][ T638] Tainted: [B]=BAD_PAGE
[ 58.949237][ T638] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 58.949496][ T638] RIP: 0010:refcount_warn_saturate+0x16f/0x1b0
[ 58.949756][ T638] Code: 7d 93 02 80 fb 01 0f 87 bb 99 d9 fe 83 e3 01 0f 85 51 ff ff ff c6 05 a8 7d 93 02 01 90 48 c7 c7 60 8d a5 90 e8 32 bf 18 ff 90 <0f> 0b 90 90 e9 33 ff ff ff 48 89 df e8 b0 63 a1 ff e9 ba fe ff ff
[ 58.950446][ T638] RSP: 0018:ffffc9000102f1f0 EFLAGS: 00010286
[ 58.950698][ T638] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[ 58.950999][ T638] RDX: 0000000000000002 RSI: 0000000000000004 RDI: 0000000000000001
[ 58.951394][ T638] RBP: 0000000000000003 R08: 0000000000000000 R09: fffffbfff227e134
[ 58.951697][ T638] R10: 0000000000000003 R11: ffffc9000102ed80 R12: 0000000000000001
[ 58.952098][ T638] R13: dffffc0000000000 R14: dead000000000122 R15: dead000000000100
[ 58.952492][ T638] FS: 00007fad4c256800(0000) GS:ffff8880a3b72000(0000) knlGS:0000000000000000
[ 58.952848][ T638] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 58.953122][ T638] CR2: 00007f8198c4e000 CR3: 000000000f0a1001 CR4: 0000000000772ef0
[ 58.953424][ T638] PKRU: 55555554
[ 58.953583][ T638] Call Trace:
[ 58.953727][ T638]
[ 58.953945][ T638] netdev_run_todo+0x5f0/0xc60
[ 58.954142][ T638] ? dev_ingress_queue_create+0x190/0x190
[ 58.954336][ T638] ? generic_xdp_install+0x410/0x410
[ 58.954630][ T638] ? unregister_netdevice_many+0x20/0x20
[ 58.954832][ T638] ? net_generic+0xbb/0x1f0 [ip6_gre]
[ 58.955043][ T638] rtnl_dellink+0x350/0xa30
[ 58.955237][ T638] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 58.955771][ T638] ? find_held_lock+0x2b/0x80
[ 58.956010][ T638] ? __lock_acquire+0x449/0x7e0
[ 58.956206][ T638] ? find_held_lock+0x2b/0x80
[ 58.956393][ T638] ? rtnetlink_rcv_msg+0x6e6/0xc00
[ 58.956596][ T638] ? __lock_release+0x5d/0x170
[ 58.956916][ T638] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 58.957165][ T638] rtnetlink_rcv_msg+0x709/0xc00
[ 58.957371][ T638] ? rtnl_port_fill+0x850/0x850
[ 58.957785][ T638] ? __lock_acquire+0x449/0x7e0
[ 58.958100][ T638] netlink_rcv_skb+0x121/0x340
[ 58.958294][ T638] ? rtnl_port_fill+0x850/0x850
[ 58.958592][ T638] ? netlink_ack+0xdd0/0xdd0
[ 58.958896][ T638] ? netlink_deliver_tap+0x13e/0x340
[ 58.959093][ T638] ? netlink_deliver_tap+0xc3/0x340
[ 58.959284][ T638] netlink_unicast+0x4aa/0x780
[ 58.959477][ T638] ? netlink_attachskb+0x810/0x810
[ 58.959869][ T638] ? __lock_acquire+0x449/0x7e0
[ 58.960078][ T638] netlink_sendmsg+0x714/0xbd0
[ 58.960268][ T638] ? netlink_unicast+0x780/0x780
[ 58.960464][ T638] ? __import_iovec+0x230/0x3b0
[ 58.960668][ T638] ? netlink_unicast+0x780/0x780
[ 58.960858][ T638] ____sys_sendmsg+0x3dd/0x890
[ 58.961073][ T638] ? get_timestamp.constprop.0+0x380/0x380
[ 58.961516][ T638] ? __copy_msghdr+0x3c0/0x3c0
[ 58.961712][ T638] ___sys_sendmsg+0xed/0x170
[ 58.962013][ T638] ? kasan_record_aux_stack+0x8c/0xa0
[ 58.962208][ T638] ? __call_rcu_common.constprop.0+0xa8/0x630
[ 58.962459][ T638] ? copy_msghdr_from_user+0x110/0x110
[ 58.962679][ T638] ? find_held_lock+0x2b/0x80
[ 58.962869][ T638] ? __lock_acquire+0x449/0x7e0
[ 58.963082][ T638] ? find_held_lock+0x2b/0x80
[ 58.963270][ T638] ? __virt_addr_valid+0x22a/0x450
[ 58.963462][ T638] ? __lock_release+0x5d/0x170
[ 58.963765][ T638] __sys_sendmsg+0x10b/0x1a0
[ 58.964080][ T638] ? __call_rcu_common.constprop.0+0x318/0x630
[ 58.964321][ T638] ? __sys_sendmsg_sock+0x20/0x20
[ 58.964516][ T638] ? rcu_is_watching+0x12/0xb0
[ 58.964709][ T638] do_syscall_64+0xc1/0xfd0
[ 58.964912][ T638] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 58.965159][ T638] RIP: 0033:0x7fad4c4241d7
[ 58.965360][ T638] 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
[ 58.966180][ T638] RSP: 002b:00007ffc98cddc28 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 58.966590][ T638] RAX: ffffffffffffffda RBX: 00007ffc98cde350 RCX: 00007fad4c4241d7
[ 58.966995][ T638] RDX: 0000000000000000 RSI: 00007ffc98cddc90 RDI: 0000000000000005
[ 58.967290][ T638] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078
[ 58.967602][ T638] R10: 00007fad4c320f60 R11: 0000000000000246 R12: 0000000000000002
[ 58.968002][ T638] R13: 00000000690df836 R14: 0000000000499600 R15: 0000000000000000
[ 58.968300][ T638]
[ 58.968455][ T638] irq event stamp: 43809
[ 58.968619][ T638] hardirqs last enabled at (43809): [] kasan_quarantine_put+0xf9/0x210
[ 58.969070][ T638] hardirqs last disabled at (43808): [] kasan_quarantine_put+0xac/0x210
[ 58.969403][ T638] softirqs last enabled at (43440): [] handle_softirqs+0x352/0x610
[ 58.969844][ T638] softirqs last disabled at (43429): [] irq_exit_rcu+0xab/0x100
[ 58.970198][ T638] ---[ end trace 0000000000000000 ]---