[ 22.716387][ T288] ip (288) used greatest stack depth: 24608 bytes left
[ 28.094825][ T330] 8021q: 802.1Q VLAN Support v1.8
[ 28.866024][ T336] gre: GRE over IPv4 demultiplexer driver
[ 28.893594][ T336] ip_gre: GRE over IPv4 tunneling driver
[ 29.558844][ T342] ip (342) used greatest stack depth: 24512 bytes left
[ 46.987452][ T439] ==================================================================
[ 46.987889][ T439] BUG: KASAN: slab-use-after-free in kobject_put+0xbb/0xd0
[ 46.988266][ T439] Read of size 1 at addr ffff88800be116ac by task ip/439
[ 46.988544][ T439]
[ 46.988641][ T439] CPU: 0 UID: 0 PID: 439 Comm: ip Not tainted 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 46.988649][ T439] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 46.988653][ T439] Call Trace:
[ 46.988655][ T439]
[ 46.988657][ T439] dump_stack_lvl+0x82/0xc0
[ 46.988665][ T439] print_address_description.constprop.0+0x2c/0x3a0
[ 46.988679][ T439] ? kobject_put+0xbb/0xd0
[ 46.988684][ T439] print_report+0xb4/0x270
[ 46.988686][ T439] ? kobject_put+0xbb/0xd0
[ 46.988690][ T439] ? kasan_addr_to_slab+0x21/0x70
[ 46.988693][ T439] ? kobject_put+0xbb/0xd0
[ 46.988696][ T439] kasan_report+0xca/0x100
[ 46.988699][ T439] ? kobject_put+0xbb/0xd0
[ 46.988705][ T439] kobject_put+0xbb/0xd0
[ 46.988708][ T439] netdev_run_todo+0x5f0/0xc60
[ 46.988717][ T439] ? dev_ingress_queue_create+0x190/0x190
[ 46.988720][ T439] ? generic_xdp_install+0x410/0x410
[ 46.988723][ T439] ? unregister_netdevice_many+0x20/0x20
[ 46.988726][ T439] ? net_generic+0xb1/0x1f0
[ 46.988734][ T439] ? net_generic+0xbb/0x1f0
[ 46.988739][ T439] rtnl_dellink+0x350/0xa30
[ 46.988746][ T439] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 46.988778][ T439] ? find_held_lock+0x2b/0x80
[ 46.988798][ T439] ? __lock_acquire+0x449/0x7e0
[ 46.988810][ T439] ? find_held_lock+0x2b/0x80
[ 46.988815][ T439] ? rtnetlink_rcv_msg+0x6e6/0xc00
[ 46.988819][ T439] ? __lock_release+0x5d/0x170
[ 46.988827][ T439] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 46.988833][ T439] rtnetlink_rcv_msg+0x709/0xc00
[ 46.988839][ T439] ? rtnl_port_fill+0x850/0x850
[ 46.988844][ T439] ? __lock_acquire+0x449/0x7e0
[ 46.988857][ T439] netlink_rcv_skb+0x121/0x340
[ 46.988866][ T439] ? rtnl_port_fill+0x850/0x850
[ 46.988872][ T439] ? netlink_ack+0xdd0/0xdd0
[ 46.988885][ T439] ? netlink_deliver_tap+0x13e/0x340
[ 46.988889][ T439] ? netlink_deliver_tap+0xc3/0x340
[ 46.988894][ T439] netlink_unicast+0x4aa/0x780
[ 46.988900][ T439] ? netlink_attachskb+0x810/0x810
[ 46.988906][ T439] ? __lock_acquire+0x449/0x7e0
[ 46.988915][ T439] netlink_sendmsg+0x714/0xbd0
[ 46.988922][ T439] ? netlink_unicast+0x780/0x780
[ 46.988927][ T439] ? __import_iovec+0x230/0x3b0
[ 46.988946][ T439] ? netlink_unicast+0x780/0x780
[ 46.988952][ T439] ____sys_sendmsg+0x3dd/0x890
[ 46.988970][ T439] ? get_timestamp.constprop.0+0x380/0x380
[ 46.988975][ T439] ? __copy_msghdr+0x3c0/0x3c0
[ 46.988991][ T439] ___sys_sendmsg+0xed/0x170
[ 46.988996][ T439] ? kasan_record_aux_stack+0x8c/0xa0
[ 46.989000][ T439] ? __call_rcu_common.constprop.0+0xa8/0x630
[ 46.989016][ T439] ? copy_msghdr_from_user+0x110/0x110
[ 46.989021][ T439] ? find_held_lock+0x2b/0x80
[ 46.989025][ T439] ? __lock_acquire+0x449/0x7e0
[ 46.989031][ T439] ? find_held_lock+0x2b/0x80
[ 46.989035][ T439] ? __virt_addr_valid+0x22a/0x450
[ 46.989048][ T439] ? __lock_release+0x5d/0x170
[ 46.989055][ T439] __sys_sendmsg+0x10b/0x1a0
[ 46.989058][ T439] ? __call_rcu_common.constprop.0+0x318/0x630
[ 46.989062][ T439] ? __sys_sendmsg_sock+0x20/0x20
[ 46.989070][ T439] ? rcu_is_watching+0x12/0xb0
[ 46.989074][ T439] do_syscall_64+0xc1/0xfd0
[ 46.989081][ T439] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 46.989089][ T439] RIP: 0033:0x7fa2c0eed1d7
[ 46.989101][ T439] 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
[ 46.989104][ T439] RSP: 002b:00007ffc1f2a5868 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 46.989110][ T439] RAX: ffffffffffffffda RBX: 00007ffc1f2a5f90 RCX: 00007fa2c0eed1d7
[ 46.989112][ T439] RDX: 0000000000000000 RSI: 00007ffc1f2a58d0 RDI: 0000000000000005
[ 46.989114][ T439] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078
[ 46.989116][ T439] R10: 00007fa2c0de9f60 R11: 0000000000000246 R12: 0000000000000002
[ 46.989117][ T439] R13: 00000000690dee9b R14: 0000000000499600 R15: 0000000000000000
[ 46.989124][ T439]
[ 46.989125][ T439]
[ 47.004154][ T439] Allocated by task 370:
[ 47.004291][ T439] kasan_save_stack+0x24/0x40
[ 47.004482][ T439] kasan_save_track+0x14/0x30
[ 47.004660][ T439] __kasan_kmalloc+0x7b/0x90
[ 47.004836][ T439] __kvmalloc_node_noprof+0x2e5/0x8e0
[ 47.005102][ T439] alloc_netdev_mqs+0x7d/0x1370
[ 47.005288][ T439] rtnl_create_link+0xa9e/0xe20
[ 47.005467][ T439] rtnl_newlink_create+0x203/0x770
[ 47.005695][ T439] __rtnl_newlink+0x231/0xa30
[ 47.005866][ T439] rtnl_newlink+0x693/0xa60
[ 47.006053][ T439] rtnetlink_rcv_msg+0x709/0xc00
[ 47.006225][ T439] netlink_rcv_skb+0x121/0x340
[ 47.006414][ T439] netlink_unicast+0x4aa/0x780
[ 47.006584][ T439] netlink_sendmsg+0x714/0xbd0
[ 47.006809][ T439] ____sys_sendmsg+0x3dd/0x890
[ 47.007023][ T439] ___sys_sendmsg+0xed/0x170
[ 47.007195][ T439] __sys_sendmsg+0x10b/0x1a0
[ 47.007370][ T439] do_syscall_64+0xc1/0xfd0
[ 47.007551][ T439] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 47.007818][ T439]
[ 47.007909][ T439] Freed by task 439:
[ 47.008118][ T439] kasan_save_stack+0x24/0x40
[ 47.008415][ T439] kasan_save_track+0x14/0x30
[ 47.008804][ T439] __kasan_save_free_info+0x3b/0x60
[ 47.009011][ T439] __kasan_slab_free+0x3f/0x60
[ 47.009186][ T439] kfree+0x21d/0x540
[ 47.009329][ T439] device_release+0x9c/0x210
[ 47.009653][ T439] kobject_cleanup+0xfe/0x360
[ 47.009918][ T439] netdev_run_todo+0x81f/0xc60
[ 47.010096][ T439] rtnl_dellink+0x350/0xa30
[ 47.010266][ T439] rtnetlink_rcv_msg+0x709/0xc00
[ 47.010440][ T439] netlink_rcv_skb+0x121/0x340
[ 47.010620][ T439] netlink_unicast+0x4aa/0x780
[ 47.010791][ T439] netlink_sendmsg+0x714/0xbd0
[ 47.010968][ T439] ____sys_sendmsg+0x3dd/0x890
[ 47.011145][ T439] ___sys_sendmsg+0xed/0x170
[ 47.011413][ T439] __sys_sendmsg+0x10b/0x1a0
[ 47.011626][ T439] do_syscall_64+0xc1/0xfd0
[ 47.011821][ T439] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 47.012041][ T439]
[ 47.012127][ T439] The buggy address belongs to the object at ffff88800be11000
[ 47.012127][ T439] which belongs to the cache kmalloc-4k of size 4096
[ 47.012656][ T439] The buggy address is located 1708 bytes inside of
[ 47.012656][ T439] freed 4096-byte region [ffff88800be11000, ffff88800be12000)
[ 47.013150][ T439]
[ 47.013245][ T439] The buggy address belongs to the physical page:
[ 47.013569][ T439] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xbe10
[ 47.014042][ T439] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[ 47.014316][ T439] flags: 0x80000000000040(head|node=0|zone=1)
[ 47.014621][ T439] page_type: f5(slab)
[ 47.014757][ T439] raw: 0080000000000040 ffff888001043700 ffffea0000226410 ffffea0000147810
[ 47.015300][ T439] raw: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 47.015678][ T439] head: 0080000000000040 ffff888001043700 ffffea0000226410 ffffea0000147810
[ 47.016003][ T439] head: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 47.016363][ T439] head: 0080000000000003 ffffea00002f8401 00000000ffffffff 00000000ffffffff
[ 47.016664][ T439] head: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
[ 47.017052][ T439] page dumped because: kasan: bad access detected
[ 47.017391][ T439]
[ 47.017477][ T439] Memory state around the buggy address:
[ 47.017750][ T439] ffff88800be11580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 47.018100][ T439] ffff88800be11600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 47.018417][ T439] >ffff88800be11680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 47.018743][ T439] ^
[ 47.019029][ T439] ffff88800be11700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 47.019313][ T439] ffff88800be11780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 47.019613][ T439] ==================================================================
[ 47.020058][ T439] Disabling lock debugging due to kernel taint
[ 47.020412][ T439] ------------[ cut here ]------------
[ 47.020637][ T439] refcount_t: underflow; use-after-free.
[ 47.020902][ T439] WARNING: CPU: 2 PID: 439 at lib/refcount.c:28 refcount_warn_saturate+0x16f/0x1b0
[ 47.021269][ T439] Modules linked in: ip_gre gre 8021q dummy vrf veth
[ 47.021624][ T439] CPU: 2 UID: 0 PID: 439 Comm: ip Tainted: G B 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 47.022035][ T439] Tainted: [B]=BAD_PAGE
[ 47.022238][ T439] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 47.022499][ T439] RIP: 0010:refcount_warn_saturate+0x16f/0x1b0
[ 47.022839][ T439] 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 85 bc 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
[ 47.023565][ T439] RSP: 0018:ffffc90000b771f0 EFLAGS: 00010286
[ 47.023841][ T439] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[ 47.024176][ T439] RDX: 0000000000000002 RSI: 0000000000000004 RDI: 0000000000000001
[ 47.024468][ T439] RBP: 0000000000000003 R08: 0000000000000000 R09: fffffbfff7a3e134
[ 47.024822][ T439] R10: 0000000000000003 R11: ffffc90000b76d80 R12: 0000000000000001
[ 47.025173][ T439] R13: dffffc0000000000 R14: dead000000000122 R15: dead000000000100
[ 47.025455][ T439] FS: 00007fa2c0d1f800(0000) GS:ffff888077cf2000(0000) knlGS:0000000000000000
[ 47.025813][ T439] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 47.026080][ T439] CR2: 00000000004061e9 CR3: 000000000bdd2003 CR4: 0000000000772ef0
[ 47.026388][ T439] PKRU: 55555554
[ 47.026554][ T439] Call Trace:
[ 47.026766][ T439]
[ 47.026896][ T439] netdev_run_todo+0x5f0/0xc60
[ 47.027127][ T439] ? dev_ingress_queue_create+0x190/0x190
[ 47.027454][ T439] ? generic_xdp_install+0x410/0x410
[ 47.027707][ T439] ? unregister_netdevice_many+0x20/0x20
[ 47.027909][ T439] ? net_generic+0xb1/0x1f0
[ 47.028124][ T439] ? net_generic+0xbb/0x1f0
[ 47.028424][ T439] rtnl_dellink+0x350/0xa30
[ 47.028646][ T439] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 47.028916][ T439] ? find_held_lock+0x2b/0x80
[ 47.029132][ T439] ? __lock_acquire+0x449/0x7e0
[ 47.029442][ T439] ? find_held_lock+0x2b/0x80
[ 47.029746][ T439] ? rtnetlink_rcv_msg+0x6e6/0xc00
[ 47.029946][ T439] ? __lock_release+0x5d/0x170
[ 47.030153][ T439] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 47.030480][ T439] rtnetlink_rcv_msg+0x709/0xc00
[ 47.030737][ T439] ? rtnl_port_fill+0x850/0x850
[ 47.030963][ T439] ? __lock_acquire+0x449/0x7e0
[ 47.031231][ T439] netlink_rcv_skb+0x121/0x340
[ 47.031446][ T439] ? rtnl_port_fill+0x850/0x850
[ 47.031673][ T439] ? netlink_ack+0xdd0/0xdd0
[ 47.031883][ T439] ? netlink_deliver_tap+0x13e/0x340
[ 47.032126][ T439] ? netlink_deliver_tap+0xc3/0x340
[ 47.032373][ T439] netlink_unicast+0x4aa/0x780
[ 47.032585][ T439] ? netlink_attachskb+0x810/0x810
[ 47.032813][ T439] ? __lock_acquire+0x449/0x7e0
[ 47.033054][ T439] netlink_sendmsg+0x714/0xbd0
[ 47.033254][ T439] ? netlink_unicast+0x780/0x780
[ 47.033463][ T439] ? __import_iovec+0x230/0x3b0
[ 47.033700][ T439] ? netlink_unicast+0x780/0x780
[ 47.033899][ T439] ____sys_sendmsg+0x3dd/0x890
[ 47.034165][ T439] ? get_timestamp.constprop.0+0x380/0x380
[ 47.034404][ T439] ? __copy_msghdr+0x3c0/0x3c0
[ 47.034640][ T439] ___sys_sendmsg+0xed/0x170
[ 47.034842][ T439] ? kasan_record_aux_stack+0x8c/0xa0
[ 47.035059][ T439] ? __call_rcu_common.constprop.0+0xa8/0x630
[ 47.035321][ T439] ? copy_msghdr_from_user+0x110/0x110
[ 47.035510][ T439] ? find_held_lock+0x2b/0x80
[ 47.035764][ T439] ? __lock_acquire+0x449/0x7e0
[ 47.035990][ T439] ? find_held_lock+0x2b/0x80
[ 47.036218][ T439] ? __virt_addr_valid+0x22a/0x450
[ 47.036428][ T439] ? __lock_release+0x5d/0x170
[ 47.036635][ T439] __sys_sendmsg+0x10b/0x1a0
[ 47.036837][ T439] ? __call_rcu_common.constprop.0+0x318/0x630
[ 47.037107][ T439] ? __sys_sendmsg_sock+0x20/0x20
[ 47.037313][ T439] ? rcu_is_watching+0x12/0xb0
[ 47.037525][ T439] do_syscall_64+0xc1/0xfd0
[ 47.037769][ T439] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 47.038031][ T439] RIP: 0033:0x7fa2c0eed1d7
[ 47.038268][ T439] 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
[ 47.038976][ T439] RSP: 002b:00007ffc1f2a5868 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 47.039283][ T439] RAX: ffffffffffffffda RBX: 00007ffc1f2a5f90 RCX: 00007fa2c0eed1d7
[ 47.039609][ T439] RDX: 0000000000000000 RSI: 00007ffc1f2a58d0 RDI: 0000000000000005
[ 47.039918][ T439] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078
[ 47.040206][ T439] R10: 00007fa2c0de9f60 R11: 0000000000000246 R12: 0000000000000002
[ 47.040515][ T439] R13: 00000000690dee9b R14: 0000000000499600 R15: 0000000000000000
[ 47.040811][ T439]
[ 47.040981][ T439] irq event stamp: 42335
[ 47.041144][ T439] hardirqs last enabled at (42335): [] finish_task_switch.isra.0+0x245/0x960
[ 47.041547][ T439] hardirqs last disabled at (42334): [] __schedule+0x94a/0x1b10
[ 47.041911][ T439] softirqs last enabled at (41194): [] unregister_netdevice_many_notify+0x711/0x1b30
[ 47.042327][ T439] softirqs last disabled at (41192): [] dev_mc_flush+0x54/0x90
[ 47.042731][ T439] ---[ end trace 0000000000000000 ]---
[ 47.051685][ T439] ip (439) used greatest stack depth: 24232 bytes left