[ 17.142989][ T251] ip (251) used greatest stack depth: 24624 bytes left
[ 19.676423][ T279] 8021q: 802.1Q VLAN Support v1.8
[ 41.899994][ T446] ip (446) used greatest stack depth: 24144 bytes left
[ 48.536092][ T519] ==================================================================
[ 48.536406][ T519] BUG: KASAN: slab-use-after-free in kobject_put+0xbb/0xd0
[ 48.536688][ T519] Read of size 1 at addr ffff8880074796ac by task ip/519
[ 48.536930][ T519]
[ 48.537059][ T519] CPU: 0 UID: 0 PID: 519 Comm: ip Not tainted 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 48.537066][ T519] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 48.537068][ T519] Call Trace:
[ 48.537071][ T519]
[ 48.537073][ T519] dump_stack_lvl+0x82/0xc0
[ 48.537080][ T519] print_address_description.constprop.0+0x2c/0x3a0
[ 48.537094][ T519] ? kobject_put+0xbb/0xd0
[ 48.537098][ T519] print_report+0xb4/0x270
[ 48.537101][ T519] ? kobject_put+0xbb/0xd0
[ 48.537104][ T519] ? kasan_addr_to_slab+0x21/0x70
[ 48.537107][ T519] ? kobject_put+0xbb/0xd0
[ 48.537111][ T519] kasan_report+0xca/0x100
[ 48.537114][ T519] ? kobject_put+0xbb/0xd0
[ 48.537120][ T519] kobject_put+0xbb/0xd0
[ 48.537123][ T519] netdev_run_todo+0x5f0/0xc60
[ 48.537132][ T519] ? dev_ingress_queue_create+0x190/0x190
[ 48.537135][ T519] ? generic_xdp_install+0x410/0x410
[ 48.537140][ T519] ? lockdep_hardirqs_on+0x7c/0x110
[ 48.537150][ T519] rtnl_dellink+0x350/0xa30
[ 48.537156][ T519] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 48.537175][ T519] ? find_held_lock+0x2b/0x80
[ 48.537184][ T519] ? __lock_acquire+0x449/0x7e0
[ 48.537191][ T519] ? find_held_lock+0x2b/0x80
[ 48.537194][ T519] ? rtnetlink_rcv_msg+0x6e6/0xc00
[ 48.537197][ T519] ? __lock_release+0x5d/0x170
[ 48.537202][ T519] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 48.537205][ T519] rtnetlink_rcv_msg+0x709/0xc00
[ 48.537209][ T519] ? rtnl_port_fill+0x850/0x850
[ 48.537211][ T519] ? __lock_acquire+0x449/0x7e0
[ 48.537218][ T519] netlink_rcv_skb+0x121/0x340
[ 48.537225][ T519] ? rtnl_port_fill+0x850/0x850
[ 48.537228][ T519] ? netlink_ack+0xdd0/0xdd0
[ 48.537235][ T519] ? netlink_deliver_tap+0x13e/0x340
[ 48.537238][ T519] ? netlink_deliver_tap+0xc3/0x340
[ 48.537242][ T519] netlink_unicast+0x4aa/0x780
[ 48.537246][ T519] ? netlink_attachskb+0x810/0x810
[ 48.537249][ T519] ? __lock_acquire+0x449/0x7e0
[ 48.537255][ T519] netlink_sendmsg+0x714/0xbd0
[ 48.537259][ T519] ? netlink_unicast+0x780/0x780
[ 48.537264][ T519] ? __import_iovec+0x230/0x3b0
[ 48.537273][ T519] ? netlink_unicast+0x780/0x780
[ 48.537277][ T519] ____sys_sendmsg+0x3dd/0x890
[ 48.537288][ T519] ? get_timestamp.constprop.0+0x380/0x380
[ 48.537291][ T519] ? __copy_msghdr+0x3c0/0x3c0
[ 48.537300][ T519] ___sys_sendmsg+0xed/0x170
[ 48.537303][ T519] ? kasan_record_aux_stack+0x8c/0xa0
[ 48.537306][ T519] ? __call_rcu_common.constprop.0+0xa8/0x630
[ 48.537313][ T519] ? copy_msghdr_from_user+0x110/0x110
[ 48.537318][ T519] ? find_held_lock+0x2b/0x80
[ 48.537323][ T519] ? __lock_acquire+0x449/0x7e0
[ 48.537328][ T519] ? find_held_lock+0x2b/0x80
[ 48.537332][ T519] ? __virt_addr_valid+0x22a/0x450
[ 48.537339][ T519] ? __lock_release+0x5d/0x170
[ 48.537345][ T519] __sys_sendmsg+0x10b/0x1a0
[ 48.537348][ T519] ? __call_rcu_common.constprop.0+0x318/0x630
[ 48.537352][ T519] ? __sys_sendmsg_sock+0x20/0x20
[ 48.537360][ T519] ? rcu_is_watching+0x12/0xb0
[ 48.537364][ T519] do_syscall_64+0xc1/0xfd0
[ 48.537370][ T519] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 48.537374][ T519] RIP: 0033:0x7f57bba561d7
[ 48.537383][ T519] 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
[ 48.537386][ T519] RSP: 002b:00007ffecc17c5c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 48.537391][ T519] RAX: ffffffffffffffda RBX: 00007ffecc17ccf0 RCX: 00007f57bba561d7
[ 48.537393][ T519] RDX: 0000000000000000 RSI: 00007ffecc17c630 RDI: 0000000000000005
[ 48.537395][ T519] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078
[ 48.537396][ T519] R10: 00007f57bb952f60 R11: 0000000000000246 R12: 0000000000000002
[ 48.537398][ T519] R13: 00000000690def03 R14: 0000000000499600 R15: 0000000000000000
[ 48.537404][ T519]
[ 48.537406][ T519]
[ 48.550100][ T519] Allocated by task 286:
[ 48.550235][ T519] kasan_save_stack+0x24/0x40
[ 48.550410][ T519] kasan_save_track+0x14/0x30
[ 48.550597][ T519] __kasan_kmalloc+0x7b/0x90
[ 48.550770][ T519] __kvmalloc_node_noprof+0x2e5/0x8e0
[ 48.550944][ T519] alloc_netdev_mqs+0x7d/0x1370
[ 48.551124][ T519] rtnl_create_link+0xa9e/0xe20
[ 48.551294][ T519] rtnl_newlink_create+0x203/0x770
[ 48.551471][ T519] __rtnl_newlink+0x231/0xa30
[ 48.551648][ T519] rtnl_newlink+0x693/0xa60
[ 48.551822][ T519] rtnetlink_rcv_msg+0x709/0xc00
[ 48.551994][ T519] netlink_rcv_skb+0x121/0x340
[ 48.552177][ T519] netlink_unicast+0x4aa/0x780
[ 48.552345][ T519] netlink_sendmsg+0x714/0xbd0
[ 48.552510][ T519] ____sys_sendmsg+0x3dd/0x890
[ 48.552684][ T519] ___sys_sendmsg+0xed/0x170
[ 48.552873][ T519] __sys_sendmsg+0x10b/0x1a0
[ 48.553067][ T519] do_syscall_64+0xc1/0xfd0
[ 48.553234][ T519] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 48.553442][ T519]
[ 48.553527][ T519] Freed by task 519:
[ 48.553653][ T519] kasan_save_stack+0x24/0x40
[ 48.553834][ T519] kasan_save_track+0x14/0x30
[ 48.554021][ T519] __kasan_save_free_info+0x3b/0x60
[ 48.554187][ T519] __kasan_slab_free+0x3f/0x60
[ 48.554362][ T519] kfree+0x21d/0x540
[ 48.554514][ T519] device_release+0x9c/0x210
[ 48.554693][ T519] kobject_cleanup+0xfe/0x360
[ 48.554888][ T519] netdev_run_todo+0x81f/0xc60
[ 48.555087][ T519] rtnl_dellink+0x350/0xa30
[ 48.555267][ T519] rtnetlink_rcv_msg+0x709/0xc00
[ 48.555461][ T519] netlink_rcv_skb+0x121/0x340
[ 48.555630][ T519] netlink_unicast+0x4aa/0x780
[ 48.555814][ T519] netlink_sendmsg+0x714/0xbd0
[ 48.555996][ T519] ____sys_sendmsg+0x3dd/0x890
[ 48.556164][ T519] ___sys_sendmsg+0xed/0x170
[ 48.556338][ T519] __sys_sendmsg+0x10b/0x1a0
[ 48.556502][ T519] do_syscall_64+0xc1/0xfd0
[ 48.556667][ T519] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 48.557008][ T519]
[ 48.557093][ T519] The buggy address belongs to the object at ffff888007479000
[ 48.557093][ T519] which belongs to the cache kmalloc-4k of size 4096
[ 48.557608][ T519] The buggy address is located 1708 bytes inside of
[ 48.557608][ T519] freed 4096-byte region [ffff888007479000, ffff88800747a000)
[ 48.558045][ T519]
[ 48.558129][ T519] The buggy address belongs to the physical page:
[ 48.558430][ T519] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x7478
[ 48.558752][ T519] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[ 48.559023][ T519] flags: 0x80000000000040(head|node=0|zone=1)
[ 48.559368][ T519] page_type: f5(slab)
[ 48.559500][ T519] raw: 0080000000000040 ffff888001043700 ffffea0000276610 ffffea00001ed410
[ 48.559823][ T519] raw: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 48.560235][ T519] head: 0080000000000040 ffff888001043700 ffffea0000276610 ffffea00001ed410
[ 48.560579][ T519] head: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 48.561055][ T519] head: 0080000000000003 ffffea00001d1e01 00000000ffffffff 00000000ffffffff
[ 48.561373][ T519] head: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
[ 48.561790][ T519] page dumped because: kasan: bad access detected
[ 48.562031][ T519]
[ 48.562115][ T519] Memory state around the buggy address:
[ 48.562283][ T519] ffff888007479580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 48.562622][ T519] ffff888007479600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 48.562882][ T519] >ffff888007479680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 48.563151][ T519] ^
[ 48.563407][ T519] ffff888007479700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 48.563642][ T519] ffff888007479780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 48.563894][ T519] ==================================================================
[ 48.564466][ T519] Disabling lock debugging due to kernel taint
[ 48.564871][ T519] ------------[ cut here ]------------
[ 48.565096][ T519] refcount_t: underflow; use-after-free.
[ 48.565378][ T519] WARNING: CPU: 1 PID: 519 at lib/refcount.c:28 refcount_warn_saturate+0x16f/0x1b0
[ 48.565819][ T519] Modules linked in: 8021q vrf veth
[ 48.566083][ T519] CPU: 1 UID: 0 PID: 519 Comm: ip Tainted: G B 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 48.566570][ T519] Tainted: [B]=BAD_PAGE
[ 48.566750][ T519] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 48.567054][ T519] RIP: 0010:refcount_warn_saturate+0x16f/0x1b0
[ 48.567365][ T519] 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 65 b0 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
[ 48.568209][ T519] RSP: 0000:ffffc90000d571f0 EFLAGS: 00010286
[ 48.568534][ T519] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[ 48.568901][ T519] RDX: 0000000000000002 RSI: 0000000000000004 RDI: 0000000000000001
[ 48.569259][ T519] RBP: 0000000000000003 R08: 0000000000000000 R09: fffffbfff61fe134
[ 48.569820][ T519] R10: 0000000000000003 R11: ffffc90000d56d80 R12: 0000000000000001
[ 48.570198][ T519] R13: dffffc0000000000 R14: dead000000000122 R15: dead000000000100
[ 48.570591][ T519] FS: 00007f57bb888800(0000) GS:ffff888083e72000(0000) knlGS:0000000000000000
[ 48.571174][ T519] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 48.571511][ T519] CR2: 00000000004061e9 CR3: 0000000005320003 CR4: 0000000000772ef0
[ 48.571871][ T519] PKRU: 55555554
[ 48.572219][ T519] Call Trace:
[ 48.572405][ T519]
[ 48.572529][ T519] netdev_run_todo+0x5f0/0xc60
[ 48.572766][ T519] ? dev_ingress_queue_create+0x190/0x190
[ 48.573003][ T519] ? generic_xdp_install+0x410/0x410
[ 48.573420][ T519] ? lockdep_hardirqs_on+0x7c/0x110
[ 48.573718][ T519] rtnl_dellink+0x350/0xa30
[ 48.573963][ T519] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 48.574285][ T519] ? find_held_lock+0x2b/0x80
[ 48.574692][ T519] ? __lock_acquire+0x449/0x7e0
[ 48.574931][ T519] ? find_held_lock+0x2b/0x80
[ 48.575162][ T519] ? rtnetlink_rcv_msg+0x6e6/0xc00
[ 48.575506][ T519] ? __lock_release+0x5d/0x170
[ 48.575762][ T519] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 48.576057][ T519] rtnetlink_rcv_msg+0x709/0xc00
[ 48.576403][ T519] ? rtnl_port_fill+0x850/0x850
[ 48.576634][ T519] ? __lock_acquire+0x449/0x7e0
[ 48.576868][ T519] netlink_rcv_skb+0x121/0x340
[ 48.577107][ T519] ? rtnl_port_fill+0x850/0x850
[ 48.577439][ T519] ? netlink_ack+0xdd0/0xdd0
[ 48.577676][ T519] ? netlink_deliver_tap+0x13e/0x340
[ 48.577905][ T519] ? netlink_deliver_tap+0xc3/0x340
[ 48.578141][ T519] netlink_unicast+0x4aa/0x780
[ 48.578395][ T519] ? netlink_attachskb+0x810/0x810
[ 48.578627][ T519] ? __lock_acquire+0x449/0x7e0
[ 48.578866][ T519] netlink_sendmsg+0x714/0xbd0
[ 48.579104][ T519] ? netlink_unicast+0x780/0x780
[ 48.579340][ T519] ? __import_iovec+0x230/0x3b0
[ 48.579584][ T519] ? netlink_unicast+0x780/0x780
[ 48.579825][ T519] ____sys_sendmsg+0x3dd/0x890
[ 48.580070][ T519] ? get_timestamp.constprop.0+0x380/0x380
[ 48.580370][ T519] ? __copy_msghdr+0x3c0/0x3c0
[ 48.580624][ T519] ___sys_sendmsg+0xed/0x170
[ 48.580851][ T519] ? kasan_record_aux_stack+0x8c/0xa0
[ 48.581113][ T519] ? __call_rcu_common.constprop.0+0xa8/0x630
[ 48.581423][ T519] ? copy_msghdr_from_user+0x110/0x110
[ 48.581677][ T519] ? find_held_lock+0x2b/0x80
[ 48.581925][ T519] ? __lock_acquire+0x449/0x7e0
[ 48.582162][ T519] ? find_held_lock+0x2b/0x80
[ 48.582398][ T519] ? __virt_addr_valid+0x22a/0x450
[ 48.582625][ T519] ? __lock_release+0x5d/0x170
[ 48.582862][ T519] __sys_sendmsg+0x10b/0x1a0
[ 48.583093][ T519] ? __call_rcu_common.constprop.0+0x318/0x630
[ 48.583385][ T519] ? __sys_sendmsg_sock+0x20/0x20
[ 48.583620][ T519] ? rcu_is_watching+0x12/0xb0
[ 48.583858][ T519] do_syscall_64+0xc1/0xfd0
[ 48.584090][ T519] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 48.584379][ T519] RIP: 0033:0x7f57bba561d7
[ 48.584658][ T519] 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
[ 48.585515][ T519] RSP: 002b:00007ffecc17c5c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 48.585875][ T519] RAX: ffffffffffffffda RBX: 00007ffecc17ccf0 RCX: 00007f57bba561d7
[ 48.586230][ T519] RDX: 0000000000000000 RSI: 00007ffecc17c630 RDI: 0000000000000005
[ 48.586582][ T519] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078
[ 48.586933][ T519] R10: 00007f57bb952f60 R11: 0000000000000246 R12: 0000000000000002
[ 48.587286][ T519] R13: 00000000690def03 R14: 0000000000499600 R15: 0000000000000000
[ 48.587648][ T519]
[ 48.587828][ T519] irq event stamp: 40435
[ 48.588004][ T519] hardirqs last enabled at (40435): [] finish_task_switch.isra.0+0x245/0x960
[ 48.588474][ T519] hardirqs last disabled at (40434): [] __schedule+0x94a/0x1b10
[ 48.588904][ T519] softirqs last enabled at (40356): [] handle_softirqs+0x352/0x610
[ 48.589315][ T519] softirqs last disabled at (40347): [] irq_exit_rcu+0xab/0x100
[ 48.589710][ T519] ---[ end trace 0000000000000000 ]---