[ 16.087544][ T259] ip (259) used greatest stack depth: 24320 bytes left
[ 22.780460][ T285] ==================================================================
[ 22.780796][ T285] BUG: KASAN: slab-use-after-free in kobject_put+0xbb/0xd0
[ 22.781080][ T285] Read of size 1 at addr ffff8880093f46c4 by task ip/285
[ 22.781292][ T285]
[ 22.781384][ T285] CPU: 2 UID: 0 PID: 285 Comm: ip Not tainted 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 22.781389][ T285] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 22.781392][ T285] Call Trace:
[ 22.781394][ T285]
[ 22.781396][ T285] dump_stack_lvl+0x82/0xc0
[ 22.781402][ T285] print_address_description.constprop.0+0x2c/0x3a0
[ 22.781411][ T285] ? kobject_put+0xbb/0xd0
[ 22.781415][ T285] print_report+0xb4/0x270
[ 22.781419][ T285] ? kobject_put+0xbb/0xd0
[ 22.781422][ T285] ? kasan_addr_to_slab+0x21/0x70
[ 22.781426][ T285] ? kobject_put+0xbb/0xd0
[ 22.781429][ T285] kasan_report+0xca/0x100
[ 22.781433][ T285] ? kobject_put+0xbb/0xd0
[ 22.781438][ T285] kobject_put+0xbb/0xd0
[ 22.781442][ T285] netdev_run_todo+0x5f0/0xc60
[ 22.781449][ T285] ? dev_ingress_queue_create+0x190/0x190
[ 22.781453][ T285] ? generic_xdp_install+0x410/0x410
[ 22.781456][ T285] ? unregister_netdevice_many+0x20/0x20
[ 22.781463][ T285] rtnl_dellink+0x350/0xa30
[ 22.781469][ T285] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 22.781488][ T285] ? find_held_lock+0x2b/0x80
[ 22.781498][ T285] ? __lock_acquire+0x449/0x7e0
[ 22.781503][ T285] ? find_held_lock+0x2b/0x80
[ 22.781507][ T285] ? rtnetlink_rcv_msg+0x6e6/0xc00
[ 22.781510][ T285] ? __lock_release+0x5d/0x170
[ 22.781514][ T285] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 22.781518][ T285] rtnetlink_rcv_msg+0x709/0xc00
[ 22.781522][ T285] ? rtnl_port_fill+0x890/0x890
[ 22.781525][ T285] ? __lock_acquire+0x449/0x7e0
[ 22.781531][ T285] netlink_rcv_skb+0x121/0x340
[ 22.781537][ T285] ? rtnl_port_fill+0x890/0x890
[ 22.781541][ T285] ? netlink_ack+0xdf0/0xdf0
[ 22.781547][ T285] ? netlink_deliver_tap+0x13e/0x340
[ 22.781550][ T285] ? netlink_deliver_tap+0xc3/0x340
[ 22.781553][ T285] netlink_unicast+0x4aa/0x780
[ 22.781557][ T285] ? netlink_attachskb+0x810/0x810
[ 22.781561][ T285] ? __lock_acquire+0x449/0x7e0
[ 22.781565][ T285] netlink_sendmsg+0x714/0xbd0
[ 22.781569][ T285] ? netlink_unicast+0x780/0x780
[ 22.781573][ T285] ? __import_iovec+0x230/0x3b0
[ 22.781579][ T285] ? netlink_unicast+0x780/0x780
[ 22.781582][ T285] ____sys_sendmsg+0x3dd/0x890
[ 22.781586][ T285] ? get_timestamp.constprop.0+0x370/0x370
[ 22.781589][ T285] ? __copy_msghdr+0x3c0/0x3c0
[ 22.781597][ T285] ___sys_sendmsg+0xed/0x170
[ 22.781600][ T285] ? kasan_record_aux_stack+0x8c/0xa0
[ 22.781604][ T285] ? __call_rcu_common.constprop.0+0xa8/0x630
[ 22.781608][ T285] ? copy_msghdr_from_user+0x110/0x110
[ 22.781612][ T285] ? find_held_lock+0x2b/0x80
[ 22.781617][ T285] ? __lock_acquire+0x449/0x7e0
[ 22.781622][ T285] ? find_held_lock+0x2b/0x80
[ 22.781625][ T285] ? __virt_addr_valid+0x22a/0x450
[ 22.781632][ T285] ? __lock_release+0x5d/0x170
[ 22.781638][ T285] __sys_sendmsg+0x10b/0x1a0
[ 22.781640][ T285] ? __call_rcu_common.constprop.0+0x318/0x630
[ 22.781643][ T285] ? __sys_sendmsg_sock+0x20/0x20
[ 22.781650][ T285] ? rcu_is_watching+0x12/0xb0
[ 22.781656][ T285] do_syscall_64+0xc1/0xfd0
[ 22.781662][ T285] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 22.781666][ T285] RIP: 0033:0x7f7f844301d7
[ 22.781672][ T285] 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
[ 22.781675][ T285] RSP: 002b:00007ffe86230de8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 22.781679][ T285] RAX: ffffffffffffffda RBX: 00007ffe86231510 RCX: 00007f7f844301d7
[ 22.781681][ T285] RDX: 0000000000000000 RSI: 00007ffe86230e50 RDI: 0000000000000005
[ 22.781683][ T285] RBP: 0000000000000001 R08: 0000000000000003 R09: 0000000000000078
[ 22.781685][ T285] R10: 00007f7f8432cf60 R11: 0000000000000246 R12: 0000000000000001
[ 22.781687][ T285] R13: 00000000690df5aa R14: 0000000000499600 R15: 0000000000000000
[ 22.781693][ T285]
[ 22.781694][ T285]
[ 22.794232][ T285] Allocated by task 259:
[ 22.794362][ T285] kasan_save_stack+0x24/0x40
[ 22.794539][ T285] kasan_save_track+0x14/0x30
[ 22.794716][ T285] __kasan_kmalloc+0x7b/0x90
[ 22.794884][ T285] __kvmalloc_node_noprof+0x2e5/0x8e0
[ 22.795052][ T285] alloc_netdev_mqs+0x7d/0x1370
[ 22.795220][ T285] rtnl_create_link+0xa9e/0xe20
[ 22.795399][ T285] rtnl_newlink_create+0x203/0x8f0
[ 22.795570][ T285] __rtnl_newlink+0x231/0xa30
[ 22.795738][ T285] rtnl_newlink+0x693/0xa60
[ 22.795906][ T285] rtnetlink_rcv_msg+0x709/0xc00
[ 22.796077][ T285] netlink_rcv_skb+0x121/0x340
[ 22.796247][ T285] netlink_unicast+0x4aa/0x780
[ 22.796426][ T285] netlink_sendmsg+0x714/0xbd0
[ 22.796590][ T285] ____sys_sendmsg+0x3dd/0x890
[ 22.796761][ T285] ___sys_sendmsg+0xed/0x170
[ 22.796932][ T285] __sys_sendmsg+0x10b/0x1a0
[ 22.797095][ T285] do_syscall_64+0xc1/0xfd0
[ 22.797266][ T285] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 22.797470][ T285]
[ 22.797556][ T285] Freed by task 285:
[ 22.797682][ T285] kasan_save_stack+0x24/0x40
[ 22.797848][ T285] kasan_save_track+0x14/0x30
[ 22.798024][ T285] __kasan_save_free_info+0x3b/0x60
[ 22.798189][ T285] __kasan_slab_free+0x3f/0x60
[ 22.798352][ T285] kfree+0x21d/0x540
[ 22.798475][ T285] device_release+0x9c/0x210
[ 22.798641][ T285] kobject_cleanup+0xfe/0x360
[ 22.798812][ T285] netdev_run_todo+0x81f/0xc60
[ 22.798984][ T285] rtnl_dellink+0x350/0xa30
[ 22.799148][ T285] rtnetlink_rcv_msg+0x709/0xc00
[ 22.799325][ T285] netlink_rcv_skb+0x121/0x340
[ 22.799487][ T285] netlink_unicast+0x4aa/0x780
[ 22.799655][ T285] netlink_sendmsg+0x714/0xbd0
[ 22.799826][ T285] ____sys_sendmsg+0x3dd/0x890
[ 22.799993][ T285] ___sys_sendmsg+0xed/0x170
[ 22.800157][ T285] __sys_sendmsg+0x10b/0x1a0
[ 22.800322][ T285] do_syscall_64+0xc1/0xfd0
[ 22.800485][ T285] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 22.800693][ T285]
[ 22.800785][ T285] The buggy address belongs to the object at ffff8880093f4000
[ 22.800785][ T285] which belongs to the cache kmalloc-4k of size 4096
[ 22.801193][ T285] The buggy address is located 1732 bytes inside of
[ 22.801193][ T285] freed 4096-byte region [ffff8880093f4000, ffff8880093f5000)
[ 22.801593][ T285]
[ 22.801678][ T285] The buggy address belongs to the physical page:
[ 22.801896][ T285] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x93f0
[ 22.802196][ T285] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[ 22.802447][ T285] flags: 0x80000000000040(head|node=0|zone=1)
[ 22.802661][ T285] page_type: f5(slab)
[ 22.802789][ T285] raw: 0080000000000040 ffff888001043700 ffffea0000229410 ffffea0000229610
[ 22.803099][ T285] raw: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 22.803400][ T285] head: 0080000000000040 ffff888001043700 ffffea0000229410 ffffea0000229610
[ 22.803699][ T285] head: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 22.804020][ T285] head: 0080000000000003 ffffea000024fc01 00000000ffffffff 00000000ffffffff
[ 22.804314][ T285] head: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
[ 22.804662][ T285] page dumped because: kasan: bad access detected
[ 22.804870][ T285]
[ 22.804954][ T285] Memory state around the buggy address:
[ 22.805121][ T285] ffff8880093f4580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 22.805368][ T285] ffff8880093f4600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 22.805630][ T285] >ffff8880093f4680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 22.805871][ T285] ^
[ 22.806079][ T285] ffff8880093f4700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 22.806322][ T285] ffff8880093f4780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 22.806562][ T285] ==================================================================
[ 22.806901][ T285] Disabling lock debugging due to kernel taint
[ 22.807145][ T285] ------------[ cut here ]------------
[ 22.807323][ T285] refcount_t: underflow; use-after-free.
[ 22.807538][ T285] WARNING: CPU: 2 PID: 285 at lib/refcount.c:28 refcount_warn_saturate+0x16f/0x1b0
[ 22.807847][ T285] Modules linked in:
[ 22.808002][ T285] CPU: 2 UID: 0 PID: 285 Comm: ip Tainted: G B 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 22.808366][ T285] Tainted: [B]=BAD_PAGE
[ 22.808518][ T285] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 22.808748][ T285] RIP: 0010:refcount_warn_saturate+0x16f/0x1b0
[ 22.808991][ T285] 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 05 af 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
[ 22.809612][ T285] RSP: 0018:ffffc90000c071f0 EFLAGS: 00010286
[ 22.809944][ T285] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[ 22.810233][ T285] RDX: 0000000000000002 RSI: 0000000000000004 RDI: 0000000000000001
[ 22.810695][ T285] RBP: 0000000000000003 R08: 0000000000000000 R09: fffffbfff6000934
[ 22.810970][ T285] R10: 0000000000000003 R11: ffffc90000c06d80 R12: 0000000000000001
[ 22.811347][ T285] R13: dffffc0000000000 R14: dead000000000122 R15: dead000000000100
[ 22.811615][ T285] FS: 00007f7f84262800(0000) GS:ffff8880b5808000(0000) knlGS:0000000000000000
[ 22.812023][ T285] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 22.812263][ T285] CR2: 00000000004e5ae0 CR3: 000000000f4ef005 CR4: 0000000000772ef0
[ 22.812548][ T285] PKRU: 55555554
[ 22.812693][ T285] Call Trace:
[ 22.812847][ T285]
[ 22.812959][ T285] netdev_run_todo+0x5f0/0xc60
[ 22.813159][ T285] ? dev_ingress_queue_create+0x190/0x190
[ 22.813377][ T285] ? generic_xdp_install+0x410/0x410
[ 22.813563][ T285] ? unregister_netdevice_many+0x20/0x20
[ 22.813779][ T285] rtnl_dellink+0x350/0xa30
[ 22.813966][ T285] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 22.814307][ T285] ? find_held_lock+0x2b/0x80
[ 22.814496][ T285] ? __lock_acquire+0x449/0x7e0
[ 22.814695][ T285] ? find_held_lock+0x2b/0x80
[ 22.814879][ T285] ? rtnetlink_rcv_msg+0x6e6/0xc00
[ 22.815090][ T285] ? __lock_release+0x5d/0x170
[ 22.815402][ T285] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 22.815629][ T285] rtnetlink_rcv_msg+0x709/0xc00
[ 22.815815][ T285] ? rtnl_port_fill+0x890/0x890
[ 22.816117][ T285] ? __lock_acquire+0x449/0x7e0
[ 22.816311][ T285] netlink_rcv_skb+0x121/0x340
[ 22.816498][ T285] ? rtnl_port_fill+0x890/0x890
[ 22.816683][ T285] ? netlink_ack+0xdf0/0xdf0
[ 22.816870][ T285] ? netlink_deliver_tap+0x13e/0x340
[ 22.817085][ T285] ? netlink_deliver_tap+0xc3/0x340
[ 22.817281][ T285] netlink_unicast+0x4aa/0x780
[ 22.817482][ T285] ? netlink_attachskb+0x810/0x810
[ 22.817667][ T285] ? __lock_acquire+0x449/0x7e0
[ 22.817850][ T285] netlink_sendmsg+0x714/0xbd0
[ 22.818094][ T285] ? netlink_unicast+0x780/0x780
[ 22.818290][ T285] ? __import_iovec+0x230/0x3b0
[ 22.818492][ T285] ? netlink_unicast+0x780/0x780
[ 22.818677][ T285] ____sys_sendmsg+0x3dd/0x890
[ 22.818963][ T285] ? get_timestamp.constprop.0+0x370/0x370
[ 22.819218][ T285] ? __copy_msghdr+0x3c0/0x3c0
[ 22.819414][ T285] ___sys_sendmsg+0xed/0x170
[ 22.819594][ T285] ? kasan_record_aux_stack+0x8c/0xa0
[ 22.819873][ T285] ? __call_rcu_common.constprop.0+0xa8/0x630
[ 22.820133][ T285] ? copy_msghdr_from_user+0x110/0x110
[ 22.820355][ T285] ? find_held_lock+0x2b/0x80
[ 22.820569][ T285] ? __lock_acquire+0x449/0x7e0
[ 22.820871][ T285] ? find_held_lock+0x2b/0x80
[ 22.821089][ T285] ? __virt_addr_valid+0x22a/0x450
[ 22.821307][ T285] ? __lock_release+0x5d/0x170
[ 22.821517][ T285] __sys_sendmsg+0x10b/0x1a0
[ 22.821818][ T285] ? __call_rcu_common.constprop.0+0x318/0x630
[ 22.822089][ T285] ? __sys_sendmsg_sock+0x20/0x20
[ 22.822307][ T285] ? rcu_is_watching+0x12/0xb0
[ 22.822612][ T285] do_syscall_64+0xc1/0xfd0
[ 22.822827][ T285] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 22.823089][ T285] RIP: 0033:0x7f7f844301d7
[ 22.823313][ T285] 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
[ 22.824091][ T285] RSP: 002b:00007ffe86230de8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 22.824504][ T285] RAX: ffffffffffffffda RBX: 00007ffe86231510 RCX: 00007f7f844301d7
[ 22.824815][ T285] RDX: 0000000000000000 RSI: 00007ffe86230e50 RDI: 0000000000000005
[ 22.825142][ T285] RBP: 0000000000000001 R08: 0000000000000003 R09: 0000000000000078
[ 22.825536][ T285] R10: 00007f7f8432cf60 R11: 0000000000000246 R12: 0000000000000001
[ 22.825838][ T285] R13: 00000000690df5aa R14: 0000000000499600 R15: 0000000000000000
[ 22.826160][ T285]
[ 22.826325][ T285] irq event stamp: 52713
[ 22.826490][ T285] hardirqs last enabled at (52713): [] irqentry_exit+0x3b/0x80
[ 22.826831][ T285] hardirqs last disabled at (52712): [] handle_softirqs+0x47f/0x610
[ 22.827303][ T285] softirqs last enabled at (51644): [] handle_softirqs+0x352/0x610
[ 22.827646][ T285] softirqs last disabled at (51559): [] irq_exit_rcu+0xab/0x100
[ 22.828098][ T285] ---[ end trace 0000000000000000 ]---