[ 14.972312][ T250] ip (250) used greatest stack depth: 24256 bytes left
[ 20.277319][ T314] 8021q: 802.1Q VLAN Support v1.8
[ 20.749626][ T319] gre: GRE over IPv4 demultiplexer driver
[ 20.764681][ T319] ip_gre: GRE over IPv4 tunneling driver
[ 40.420857][ T418] ==================================================================
[ 40.421178][ T418] BUG: KASAN: slab-use-after-free in kobject_put+0xbb/0xd0
[ 40.421447][ T418] Read of size 1 at addr ffff888008d3c6ac by task ip/418
[ 40.421678][ T418]
[ 40.421772][ T418] CPU: 1 UID: 0 PID: 418 Comm: ip Not tainted 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 40.421777][ T418] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 40.421780][ T418] Call Trace:
[ 40.421782][ T418]
[ 40.421784][ T418] dump_stack_lvl+0x82/0xc0
[ 40.421790][ T418] print_address_description.constprop.0+0x2c/0x3a0
[ 40.421797][ T418] ? kobject_put+0xbb/0xd0
[ 40.421801][ T418] print_report+0xb4/0x270
[ 40.421804][ T418] ? kobject_put+0xbb/0xd0
[ 40.421807][ T418] ? kasan_addr_to_slab+0x21/0x70
[ 40.421811][ T418] ? kobject_put+0xbb/0xd0
[ 40.421814][ T418] kasan_report+0xca/0x100
[ 40.421817][ T418] ? kobject_put+0xbb/0xd0
[ 40.421823][ T418] kobject_put+0xbb/0xd0
[ 40.421826][ T418] netdev_run_todo+0x5f0/0xc60
[ 40.421832][ T418] ? dev_ingress_queue_create+0x190/0x190
[ 40.421835][ T418] ? generic_xdp_install+0x410/0x410
[ 40.421838][ T418] ? unregister_netdevice_many+0x20/0x20
[ 40.421840][ T418] ? net_generic+0xb1/0x1f0
[ 40.421847][ T418] ? net_generic+0xbb/0x1f0
[ 40.421852][ T418] rtnl_dellink+0x350/0xa30
[ 40.421860][ T418] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 40.421878][ T418] ? find_held_lock+0x2b/0x80
[ 40.421886][ T418] ? __lock_acquire+0x449/0x7e0
[ 40.421893][ T418] ? find_held_lock+0x2b/0x80
[ 40.421897][ T418] ? rtnetlink_rcv_msg+0x6e6/0xc00
[ 40.421900][ T418] ? __lock_release+0x5d/0x170
[ 40.421905][ T418] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 40.421908][ T418] rtnetlink_rcv_msg+0x709/0xc00
[ 40.421912][ T418] ? rtnl_port_fill+0x850/0x850
[ 40.421914][ T418] ? __lock_acquire+0x449/0x7e0
[ 40.421921][ T418] netlink_rcv_skb+0x121/0x340
[ 40.421926][ T418] ? rtnl_port_fill+0x850/0x850
[ 40.421930][ T418] ? netlink_ack+0xdd0/0xdd0
[ 40.421937][ T418] ? netlink_deliver_tap+0x13e/0x340
[ 40.421939][ T418] ? netlink_deliver_tap+0xc3/0x340
[ 40.421943][ T418] netlink_unicast+0x4aa/0x780
[ 40.421947][ T418] ? netlink_attachskb+0x810/0x810
[ 40.421951][ T418] ? __lock_acquire+0x449/0x7e0
[ 40.421957][ T418] netlink_sendmsg+0x714/0xbd0
[ 40.421962][ T418] ? netlink_unicast+0x780/0x780
[ 40.421965][ T418] ? __import_iovec+0x230/0x3b0
[ 40.421973][ T418] ? netlink_unicast+0x780/0x780
[ 40.421977][ T418] ____sys_sendmsg+0x3dd/0x890
[ 40.421984][ T418] ? get_timestamp.constprop.0+0x380/0x380
[ 40.421987][ T418] ? __copy_msghdr+0x3c0/0x3c0
[ 40.421996][ T418] ___sys_sendmsg+0xed/0x170
[ 40.421999][ T418] ? kasan_record_aux_stack+0x8c/0xa0
[ 40.422002][ T418] ? __call_rcu_common.constprop.0+0xa8/0x630
[ 40.422011][ T418] ? copy_msghdr_from_user+0x110/0x110
[ 40.422015][ T418] ? find_held_lock+0x2b/0x80
[ 40.422020][ T418] ? __lock_acquire+0x449/0x7e0
[ 40.422025][ T418] ? find_held_lock+0x2b/0x80
[ 40.422029][ T418] ? __virt_addr_valid+0x22a/0x450
[ 40.422034][ T418] ? __lock_release+0x5d/0x170
[ 40.422040][ T418] __sys_sendmsg+0x10b/0x1a0
[ 40.422043][ T418] ? __call_rcu_common.constprop.0+0x318/0x630
[ 40.422047][ T418] ? __sys_sendmsg_sock+0x20/0x20
[ 40.422055][ T418] ? rcu_is_watching+0x12/0xb0
[ 40.422058][ T418] do_syscall_64+0xc1/0xfd0
[ 40.422064][ T418] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 40.422068][ T418] RIP: 0033:0x7fabcddb51d7
[ 40.422074][ T418] 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
[ 40.422077][ T418] RSP: 002b:00007ffc8165d238 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 40.422083][ T418] RAX: ffffffffffffffda RBX: 00007ffc8165d960 RCX: 00007fabcddb51d7
[ 40.422086][ T418] RDX: 0000000000000000 RSI: 00007ffc8165d2a0 RDI: 0000000000000005
[ 40.422088][ T418] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078
[ 40.422089][ T418] R10: 00007fabcdcb1f60 R11: 0000000000000246 R12: 0000000000000002
[ 40.422091][ T418] R13: 00000000690dfa3f R14: 0000000000499600 R15: 0000000000000000
[ 40.422097][ T418]
[ 40.422099][ T418]
[ 40.435622][ T418] Allocated by task 344:
[ 40.435763][ T418] kasan_save_stack+0x24/0x40
[ 40.435946][ T418] kasan_save_track+0x14/0x30
[ 40.436120][ T418] __kasan_kmalloc+0x7b/0x90
[ 40.436390][ T418] __kvmalloc_node_noprof+0x2e5/0x8e0
[ 40.436574][ T418] alloc_netdev_mqs+0x7d/0x1370
[ 40.436754][ T418] rtnl_create_link+0xa9e/0xe20
[ 40.436926][ T418] rtnl_newlink_create+0x203/0x770
[ 40.437197][ T418] __rtnl_newlink+0x231/0xa30
[ 40.437378][ T418] rtnl_newlink+0x693/0xa60
[ 40.437552][ T418] rtnetlink_rcv_msg+0x709/0xc00
[ 40.437729][ T418] netlink_rcv_skb+0x121/0x340
[ 40.437999][ T418] netlink_unicast+0x4aa/0x780
[ 40.438171][ T418] netlink_sendmsg+0x714/0xbd0
[ 40.438341][ T418] ____sys_sendmsg+0x3dd/0x890
[ 40.438513][ T418] ___sys_sendmsg+0xed/0x170
[ 40.438839][ T418] __sys_sendmsg+0x10b/0x1a0
[ 40.439028][ T418] do_syscall_64+0xc1/0xfd0
[ 40.439211][ T418] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 40.439431][ T418]
[ 40.439622][ T418] Freed by task 418:
[ 40.439759][ T418] kasan_save_stack+0x24/0x40
[ 40.439939][ T418] kasan_save_track+0x14/0x30
[ 40.440116][ T418] __kasan_save_free_info+0x3b/0x60
[ 40.440294][ T418] __kasan_slab_free+0x3f/0x60
[ 40.440584][ T418] kfree+0x21d/0x540
[ 40.440717][ T418] device_release+0x9c/0x210
[ 40.440896][ T418] kobject_cleanup+0xfe/0x360
[ 40.441075][ T418] netdev_run_todo+0x81f/0xc60
[ 40.441349][ T418] rtnl_dellink+0x350/0xa30
[ 40.441525][ T418] rtnetlink_rcv_msg+0x709/0xc00
[ 40.441704][ T418] netlink_rcv_skb+0x121/0x340
[ 40.441878][ T418] netlink_unicast+0x4aa/0x780
[ 40.442160][ T418] netlink_sendmsg+0x714/0xbd0
[ 40.442335][ T418] ____sys_sendmsg+0x3dd/0x890
[ 40.442516][ T418] ___sys_sendmsg+0xed/0x170
[ 40.442699][ T418] __sys_sendmsg+0x10b/0x1a0
[ 40.442878][ T418] do_syscall_64+0xc1/0xfd0
[ 40.443057][ T418] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 40.443293][ T418]
[ 40.443385][ T418] The buggy address belongs to the object at ffff888008d3c000
[ 40.443385][ T418] which belongs to the cache kmalloc-4k of size 4096
[ 40.443927][ T418] The buggy address is located 1708 bytes inside of
[ 40.443927][ T418] freed 4096-byte region [ffff888008d3c000, ffff888008d3d000)
[ 40.444453][ T418]
[ 40.444546][ T418] The buggy address belongs to the physical page:
[ 40.444771][ T418] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x8d38
[ 40.445101][ T418] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[ 40.445474][ T418] flags: 0x80000000000040(head|node=0|zone=1)
[ 40.445711][ T418] page_type: f5(slab)
[ 40.445855][ T418] raw: 0080000000000040 ffff888001043700 ffffea00001f4210 ffffea000032e410
[ 40.446282][ T418] raw: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 40.446610][ T418] head: 0080000000000040 ffff888001043700 ffffea00001f4210 ffffea000032e410
[ 40.446930][ T418] head: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 40.447244][ T418] head: 0080000000000003 ffffea0000234e01 00000000ffffffff 00000000ffffffff
[ 40.447668][ T418] head: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
[ 40.447984][ T418] page dumped because: kasan: bad access detected
[ 40.448205][ T418]
[ 40.448294][ T418] Memory state around the buggy address:
[ 40.448564][ T418] ffff888008d3c580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 40.448823][ T418] ffff888008d3c600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 40.449076][ T418] >ffff888008d3c680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 40.449439][ T418] ^
[ 40.449621][ T418] ffff888008d3c700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 40.449878][ T418] ffff888008d3c780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 40.450224][ T418] ==================================================================
[ 40.450706][ T418] Disabling lock debugging due to kernel taint
[ 40.450999][ T418] ------------[ cut here ]------------
[ 40.451195][ T418] refcount_t: underflow; use-after-free.
[ 40.451419][ T418] WARNING: CPU: 2 PID: 418 at lib/refcount.c:28 refcount_warn_saturate+0x16f/0x1b0
[ 40.451761][ T418] Modules linked in: ip_gre gre 8021q vrf veth
[ 40.452029][ T418] CPU: 2 UID: 0 PID: 418 Comm: ip Tainted: G B 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 40.452407][ T418] Tainted: [B]=BAD_PAGE
[ 40.452566][ T418] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 40.452819][ T418] RIP: 0010:refcount_warn_saturate+0x16f/0x1b0
[ 40.453069][ T418] 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 c5 ae 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
[ 40.453731][ T418] RSP: 0018:ffffc90000a271f0 EFLAGS: 00010286
[ 40.453995][ T418] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[ 40.454281][ T418] RDX: 0000000000000002 RSI: 0000000000000004 RDI: 0000000000000001
[ 40.454573][ T418] RBP: 0000000000000003 R08: 0000000000000000 R09: fffffbfff5ebe134
[ 40.454869][ T418] R10: 0000000000000003 R11: ffffc90000a26d80 R12: 0000000000000001
[ 40.455154][ T418] R13: dffffc0000000000 R14: dead000000000122 R15: dead000000000100
[ 40.455440][ T418] FS: 00007fabcdbe7800(0000) GS:ffff8880858f2000(0000) knlGS:0000000000000000
[ 40.455776][ T418] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 40.456025][ T418] CR2: 00000000004061e9 CR3: 000000000bba1004 CR4: 0000000000772ef0
[ 40.456313][ T418] PKRU: 55555554
[ 40.456469][ T418] Call Trace:
[ 40.456623][ T418]
[ 40.456738][ T418] netdev_run_todo+0x5f0/0xc60
[ 40.456953][ T418] ? dev_ingress_queue_create+0x190/0x190
[ 40.457155][ T418] ? generic_xdp_install+0x410/0x410
[ 40.457362][ T418] ? unregister_netdevice_many+0x20/0x20
[ 40.457568][ T418] ? net_generic+0xb1/0x1f0
[ 40.457777][ T418] ? net_generic+0xbb/0x1f0
[ 40.457979][ T418] rtnl_dellink+0x350/0xa30
[ 40.458178][ T418] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 40.458436][ T418] ? find_held_lock+0x2b/0x80
[ 40.458638][ T418] ? __lock_acquire+0x449/0x7e0
[ 40.458855][ T418] ? find_held_lock+0x2b/0x80
[ 40.459052][ T418] ? rtnetlink_rcv_msg+0x6e6/0xc00
[ 40.459247][ T418] ? __lock_release+0x5d/0x170
[ 40.459441][ T418] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 40.459678][ T418] rtnetlink_rcv_msg+0x709/0xc00
[ 40.459883][ T418] ? rtnl_port_fill+0x850/0x850
[ 40.460089][ T418] ? __lock_acquire+0x449/0x7e0
[ 40.460295][ T418] netlink_rcv_skb+0x121/0x340
[ 40.460498][ T418] ? rtnl_port_fill+0x850/0x850
[ 40.460693][ T418] ? netlink_ack+0xdd0/0xdd0
[ 40.460903][ T418] ? netlink_deliver_tap+0x13e/0x340
[ 40.461098][ T418] ? netlink_deliver_tap+0xc3/0x340
[ 40.461293][ T418] netlink_unicast+0x4aa/0x780
[ 40.461490][ T418] ? netlink_attachskb+0x810/0x810
[ 40.461686][ T418] ? __lock_acquire+0x449/0x7e0
[ 40.461906][ T418] netlink_sendmsg+0x714/0xbd0
[ 40.462102][ T418] ? netlink_unicast+0x780/0x780
[ 40.462296][ T418] ? __import_iovec+0x230/0x3b0
[ 40.462493][ T418] ? netlink_unicast+0x780/0x780
[ 40.462687][ T418] ____sys_sendmsg+0x3dd/0x890
[ 40.462895][ T418] ? get_timestamp.constprop.0+0x380/0x380
[ 40.463131][ T418] ? __copy_msghdr+0x3c0/0x3c0
[ 40.463349][ T418] ___sys_sendmsg+0xed/0x170
[ 40.463555][ T418] ? kasan_record_aux_stack+0x8c/0xa0
[ 40.463750][ T418] ? __call_rcu_common.constprop.0+0xa8/0x630
[ 40.463998][ T418] ? copy_msghdr_from_user+0x110/0x110
[ 40.464197][ T418] ? find_held_lock+0x2b/0x80
[ 40.464392][ T418] ? __lock_acquire+0x449/0x7e0
[ 40.464584][ T418] ? find_held_lock+0x2b/0x80
[ 40.464786][ T418] ? __virt_addr_valid+0x22a/0x450
[ 40.464986][ T418] ? __lock_release+0x5d/0x170
[ 40.465195][ T418] __sys_sendmsg+0x10b/0x1a0
[ 40.465390][ T418] ? __call_rcu_common.constprop.0+0x318/0x630
[ 40.465625][ T418] ? __sys_sendmsg_sock+0x20/0x20
[ 40.465838][ T418] ? rcu_is_watching+0x12/0xb0
[ 40.466033][ T418] do_syscall_64+0xc1/0xfd0
[ 40.466229][ T418] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 40.466469][ T418] RIP: 0033:0x7fabcddb51d7
[ 40.466675][ T418] 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
[ 40.467340][ T418] RSP: 002b:00007ffc8165d238 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 40.467628][ T418] RAX: ffffffffffffffda RBX: 00007ffc8165d960 RCX: 00007fabcddb51d7
[ 40.467918][ T418] RDX: 0000000000000000 RSI: 00007ffc8165d2a0 RDI: 0000000000000005
[ 40.468200][ T418] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078
[ 40.468470][ T418] R10: 00007fabcdcb1f60 R11: 0000000000000246 R12: 0000000000000002
[ 40.468734][ T418] R13: 00000000690dfa3f R14: 0000000000499600 R15: 0000000000000000
[ 40.469009][ T418]
[ 40.469154][ T418] irq event stamp: 37411
[ 40.469298][ T418] hardirqs last enabled at (37411): [] finish_task_switch.isra.0+0x245/0x960
[ 40.469657][ T418] hardirqs last disabled at (37410): [] __schedule+0x94a/0x1b10
[ 40.469971][ T418] softirqs last enabled at (37250): [] handle_softirqs+0x352/0x610
[ 40.470275][ T418] softirqs last disabled at (37223): [] irq_exit_rcu+0xab/0x100
[ 40.470574][ T418] ---[ end trace 0000000000000000 ]---
[ 40.475743][ T418] ip (418) used greatest stack depth: 24232 bytes left