[ 15.800734][ T263] ip (263) used greatest stack depth: 24688 bytes left
[ 25.878089][ T391] ==================================================================
[ 25.878417][ T391] BUG: KASAN: slab-use-after-free in kobject_put+0xbb/0xd0
[ 25.878696][ T391] Read of size 1 at addr ffff8880078e16c4 by task ip/391
[ 25.878967][ T391]
[ 25.879063][ T391] CPU: 2 UID: 0 PID: 391 Comm: ip Not tainted 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 25.879068][ T391] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 25.879070][ T391] Call Trace:
[ 25.879072][ T391]
[ 25.879074][ T391] dump_stack_lvl+0x82/0xc0
[ 25.879081][ T391] print_address_description.constprop.0+0x2c/0x3a0
[ 25.879088][ T391] ? kobject_put+0xbb/0xd0
[ 25.879091][ T391] print_report+0xb4/0x270
[ 25.879095][ T391] ? kobject_put+0xbb/0xd0
[ 25.879098][ T391] ? kasan_addr_to_slab+0x21/0x70
[ 25.879102][ T391] ? kobject_put+0xbb/0xd0
[ 25.879105][ T391] kasan_report+0xca/0x100
[ 25.879109][ T391] ? kobject_put+0xbb/0xd0
[ 25.879114][ T391] kobject_put+0xbb/0xd0
[ 25.879117][ T391] netdev_run_todo+0x5f0/0xc60
[ 25.879123][ T391] ? dev_ingress_queue_create+0x190/0x190
[ 25.879127][ T391] ? generic_xdp_install+0x410/0x410
[ 25.879131][ T391] ? unregister_netdevice_many+0x20/0x20
[ 25.879137][ T391] rtnl_dellink+0x350/0xa30
[ 25.879143][ T391] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 25.879161][ T391] ? find_held_lock+0x2b/0x80
[ 25.879169][ T391] ? __lock_acquire+0x449/0x7e0
[ 25.879175][ T391] ? find_held_lock+0x2b/0x80
[ 25.879179][ T391] ? rtnetlink_rcv_msg+0x6e6/0xc00
[ 25.879182][ T391] ? __lock_release+0x5d/0x170
[ 25.879185][ T391] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 25.879189][ T391] rtnetlink_rcv_msg+0x709/0xc00
[ 25.879193][ T391] ? rtnl_port_fill+0x890/0x890
[ 25.879196][ T391] ? __lock_acquire+0x449/0x7e0
[ 25.879202][ T391] netlink_rcv_skb+0x121/0x340
[ 25.879206][ T391] ? rtnl_port_fill+0x890/0x890
[ 25.879210][ T391] ? netlink_ack+0xdf0/0xdf0
[ 25.879216][ T391] ? netlink_deliver_tap+0x13e/0x340
[ 25.879219][ T391] ? netlink_deliver_tap+0xc3/0x340
[ 25.879222][ T391] netlink_unicast+0x4aa/0x780
[ 25.879226][ T391] ? netlink_attachskb+0x810/0x810
[ 25.879230][ T391] ? __lock_acquire+0x449/0x7e0
[ 25.879234][ T391] netlink_sendmsg+0x714/0xbd0
[ 25.879238][ T391] ? netlink_unicast+0x780/0x780
[ 25.879241][ T391] ? __import_iovec+0x230/0x3b0
[ 25.879246][ T391] ? netlink_unicast+0x780/0x780
[ 25.879249][ T391] ____sys_sendmsg+0x3dd/0x890
[ 25.879253][ T391] ? get_timestamp.constprop.0+0x370/0x370
[ 25.879256][ T391] ? __copy_msghdr+0x3c0/0x3c0
[ 25.879263][ T391] ___sys_sendmsg+0xed/0x170
[ 25.879265][ T391] ? kasan_record_aux_stack+0x8c/0xa0
[ 25.879269][ T391] ? __call_rcu_common.constprop.0+0xa8/0x630
[ 25.879272][ T391] ? copy_msghdr_from_user+0x110/0x110
[ 25.879277][ T391] ? find_held_lock+0x2b/0x80
[ 25.879281][ T391] ? __lock_acquire+0x449/0x7e0
[ 25.879286][ T391] ? find_held_lock+0x2b/0x80
[ 25.879289][ T391] ? __virt_addr_valid+0x22a/0x450
[ 25.879295][ T391] ? __lock_release+0x5d/0x170
[ 25.879300][ T391] __sys_sendmsg+0x10b/0x1a0
[ 25.879302][ T391] ? __call_rcu_common.constprop.0+0x318/0x630
[ 25.879305][ T391] ? __sys_sendmsg_sock+0x20/0x20
[ 25.879312][ T391] ? rcu_is_watching+0x12/0xb0
[ 25.879317][ T391] do_syscall_64+0xc1/0xfd0
[ 25.879323][ T391] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 25.879326][ T391] RIP: 0033:0x7f3a59ec41d7
[ 25.879330][ T391] 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
[ 25.879333][ T391] RSP: 002b:00007ffffb532848 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 25.879337][ T391] RAX: ffffffffffffffda RBX: 00007ffffb532f70 RCX: 00007f3a59ec41d7
[ 25.879339][ T391] RDX: 0000000000000000 RSI: 00007ffffb5328b0 RDI: 0000000000000005
[ 25.879341][ T391] RBP: 0000000000000001 R08: 0000000000000003 R09: 0000000000000078
[ 25.879342][ T391] R10: 00007f3a59dc0f60 R11: 0000000000000246 R12: 0000000000000001
[ 25.879344][ T391] R13: 00000000690df65d R14: 0000000000499600 R15: 0000000000000000
[ 25.879350][ T391]
[ 25.879352][ T391]
[ 25.893692][ T391] Allocated by task 263:
[ 25.893843][ T391] kasan_save_stack+0x24/0x40
[ 25.894052][ T391] kasan_save_track+0x14/0x30
[ 25.894231][ T391] __kasan_kmalloc+0x7b/0x90
[ 25.894423][ T391] __kvmalloc_node_noprof+0x2e5/0x8e0
[ 25.894609][ T391] alloc_netdev_mqs+0x7d/0x1370
[ 25.894791][ T391] rtnl_create_link+0xa9e/0xe20
[ 25.895013][ T391] rtnl_newlink_create+0x203/0x8f0
[ 25.895195][ T391] __rtnl_newlink+0x231/0xa30
[ 25.895383][ T391] rtnl_newlink+0x693/0xa60
[ 25.895697][ T391] rtnetlink_rcv_msg+0x709/0xc00
[ 25.895923][ T391] netlink_rcv_skb+0x121/0x340
[ 25.896203][ T391] netlink_unicast+0x4aa/0x780
[ 25.896389][ T391] netlink_sendmsg+0x714/0xbd0
[ 25.896584][ T391] ____sys_sendmsg+0x3dd/0x890
[ 25.896770][ T391] ___sys_sendmsg+0xed/0x170
[ 25.896978][ T391] __sys_sendmsg+0x10b/0x1a0
[ 25.897160][ T391] do_syscall_64+0xc1/0xfd0
[ 25.897402][ T391] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 25.897644][ T391]
[ 25.897736][ T391] Freed by task 391:
[ 25.897893][ T391] kasan_save_stack+0x24/0x40
[ 25.898090][ T391] kasan_save_track+0x14/0x30
[ 25.898271][ T391] __kasan_save_free_info+0x3b/0x60
[ 25.898575][ T391] __kasan_slab_free+0x3f/0x60
[ 25.898758][ T391] kfree+0x21d/0x540
[ 25.898919][ T391] device_release+0x9c/0x210
[ 25.899110][ T391] kobject_cleanup+0xfe/0x360
[ 25.899299][ T391] netdev_run_todo+0x81f/0xc60
[ 25.899502][ T391] rtnl_dellink+0x350/0xa30
[ 25.899684][ T391] rtnetlink_rcv_msg+0x709/0xc00
[ 25.899880][ T391] netlink_rcv_skb+0x121/0x340
[ 25.900071][ T391] netlink_unicast+0x4aa/0x780
[ 25.900253][ T391] netlink_sendmsg+0x714/0xbd0
[ 25.900449][ T391] ____sys_sendmsg+0x3dd/0x890
[ 25.900731][ T391] ___sys_sendmsg+0xed/0x170
[ 25.900946][ T391] __sys_sendmsg+0x10b/0x1a0
[ 25.901136][ T391] do_syscall_64+0xc1/0xfd0
[ 25.901320][ T391] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 25.901663][ T391]
[ 25.901756][ T391] The buggy address belongs to the object at ffff8880078e1000
[ 25.901756][ T391] which belongs to the cache kmalloc-4k of size 4096
[ 25.902218][ T391] The buggy address is located 1732 bytes inside of
[ 25.902218][ T391] freed 4096-byte region [ffff8880078e1000, ffff8880078e2000)
[ 25.902767][ T391]
[ 25.902873][ T391] The buggy address belongs to the physical page:
[ 25.903123][ T391] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x78e0
[ 25.903569][ T391] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[ 25.903856][ T391] flags: 0x80000000000040(head|node=0|zone=1)
[ 25.904202][ T391] page_type: f5(slab)
[ 25.904342][ T391] raw: 0080000000000040 ffff888001043700 ffffea0000249410 ffffea00001f1610
[ 25.904689][ T391] raw: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 25.905137][ T391] head: 0080000000000040 ffff888001043700 ffffea0000249410 ffffea00001f1610
[ 25.905452][ T391] head: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 25.905860][ T391] head: 0080000000000003 ffffea00001e3801 00000000ffffffff 00000000ffffffff
[ 25.906182][ T391] head: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
[ 25.906503][ T391] page dumped because: kasan: bad access detected
[ 25.906808][ T391]
[ 25.906914][ T391] Memory state around the buggy address:
[ 25.907081][ T391] ffff8880078e1580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 25.907323][ T391] ffff8880078e1600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 25.907709][ T391] >ffff8880078e1680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 25.908003][ T391] ^
[ 25.908351][ T391] ffff8880078e1700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 25.908611][ T391] ffff8880078e1780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 25.908863][ T391] ==================================================================
[ 25.909277][ T391] Disabling lock debugging due to kernel taint
[ 25.909527][ T391] ------------[ cut here ]------------
[ 25.909702][ T391] refcount_t: underflow; use-after-free.
[ 25.910821][ T391] WARNING: CPU: 2 PID: 391 at lib/refcount.c:28 refcount_warn_saturate+0x16f/0x1b0
[ 25.911194][ T391] Modules linked in:
[ 25.911350][ T391] CPU: 2 UID: 0 PID: 391 Comm: ip Tainted: G B 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 25.911713][ T391] Tainted: [B]=BAD_PAGE
[ 25.911889][ T391] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 25.912123][ T391] RIP: 0010:refcount_warn_saturate+0x16f/0x1b0
[ 25.912368][ T391] 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 e5 85 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
[ 25.913040][ T391] RSP: 0018:ffffc900010871f0 EFLAGS: 00010286
[ 25.913271][ T391] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[ 25.913557][ T391] RDX: 0000000000000002 RSI: 0000000000000004 RDI: 0000000000000001
[ 25.913843][ T391] RBP: 0000000000000003 R08: 0000000000000000 R09: fffffbfff0dc0934
[ 25.914121][ T391] R10: 0000000000000003 R11: ffffc90001086d80 R12: 0000000000000001
[ 25.914386][ T391] R13: dffffc0000000000 R14: dead000000000122 R15: dead000000000100
[ 25.914654][ T391] FS: 00007f3a59cf6800(0000) GS:ffff8880e4e08000(0000) knlGS:0000000000000000
[ 25.914996][ T391] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 25.915221][ T391] CR2: 00000000004e5ae0 CR3: 000000000f25a003 CR4: 0000000000772ef0
[ 25.915503][ T391] PKRU: 55555554
[ 25.915644][ T391] Call Trace:
[ 25.915796][ T391]
[ 25.915924][ T391] netdev_run_todo+0x5f0/0xc60
[ 25.916115][ T391] ? dev_ingress_queue_create+0x190/0x190
[ 25.916296][ T391] ? generic_xdp_install+0x410/0x410
[ 25.916503][ T391] ? unregister_netdevice_many+0x20/0x20
[ 25.916686][ T391] rtnl_dellink+0x350/0xa30
[ 25.916895][ T391] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 25.917140][ T391] ? find_held_lock+0x2b/0x80
[ 25.917336][ T391] ? __lock_acquire+0x449/0x7e0
[ 25.917551][ T391] ? find_held_lock+0x2b/0x80
[ 25.917752][ T391] ? rtnetlink_rcv_msg+0x6e6/0xc00
[ 25.917985][ T391] ? __lock_release+0x5d/0x170
[ 25.918166][ T391] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 25.918398][ T391] rtnetlink_rcv_msg+0x709/0xc00
[ 25.918588][ T391] ? rtnl_port_fill+0x890/0x890
[ 25.918869][ T391] ? __lock_acquire+0x449/0x7e0
[ 25.919130][ T391] netlink_rcv_skb+0x121/0x340
[ 25.919378][ T391] ? rtnl_port_fill+0x890/0x890
[ 25.919630][ T391] ? netlink_ack+0xdf0/0xdf0
[ 25.919909][ T391] ? netlink_deliver_tap+0x13e/0x340
[ 25.920155][ T391] ? netlink_deliver_tap+0xc3/0x340
[ 25.920415][ T391] netlink_unicast+0x4aa/0x780
[ 25.920660][ T391] ? netlink_attachskb+0x810/0x810
[ 25.920940][ T391] ? __lock_acquire+0x449/0x7e0
[ 25.921191][ T391] netlink_sendmsg+0x714/0xbd0
[ 25.921468][ T391] ? netlink_unicast+0x780/0x780
[ 25.921715][ T391] ? __import_iovec+0x230/0x3b0
[ 25.922028][ T391] ? netlink_unicast+0x780/0x780
[ 25.922269][ T391] ____sys_sendmsg+0x3dd/0x890
[ 25.922538][ T391] ? get_timestamp.constprop.0+0x370/0x370
[ 25.922832][ T391] ? __copy_msghdr+0x3c0/0x3c0
[ 25.923096][ T391] ___sys_sendmsg+0xed/0x170
[ 25.923333][ T391] ? kasan_record_aux_stack+0x8c/0xa0
[ 25.923592][ T391] ? __call_rcu_common.constprop.0+0xa8/0x630
[ 25.923916][ T391] ? copy_msghdr_from_user+0x110/0x110
[ 25.924163][ T391] ? find_held_lock+0x2b/0x80
[ 25.924423][ T391] ? __lock_acquire+0x449/0x7e0
[ 25.924667][ T391] ? find_held_lock+0x2b/0x80
[ 25.924946][ T391] ? __virt_addr_valid+0x22a/0x450
[ 25.925189][ T391] ? __lock_release+0x5d/0x170
[ 25.925451][ T391] __sys_sendmsg+0x10b/0x1a0
[ 25.925698][ T391] ? __call_rcu_common.constprop.0+0x318/0x630
[ 25.926020][ T391] ? __sys_sendmsg_sock+0x20/0x20
[ 25.926261][ T391] ? rcu_is_watching+0x12/0xb0
[ 25.926525][ T391] do_syscall_64+0xc1/0xfd0
[ 25.926772][ T391] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 25.927096][ T391] RIP: 0033:0x7f3a59ec41d7
[ 25.927362][ T391] 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
[ 25.928074][ T391] RSP: 002b:00007ffffb532848 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 25.928421][ T391] RAX: ffffffffffffffda RBX: 00007ffffb532f70 RCX: 00007f3a59ec41d7
[ 25.928753][ T391] RDX: 0000000000000000 RSI: 00007ffffb5328b0 RDI: 0000000000000005
[ 25.929118][ T391] RBP: 0000000000000001 R08: 0000000000000003 R09: 0000000000000078
[ 25.929463][ T391] R10: 00007f3a59dc0f60 R11: 0000000000000246 R12: 0000000000000001
[ 25.929807][ T391] R13: 00000000690df65d R14: 0000000000499600 R15: 0000000000000000
[ 25.930161][ T391]
[ 25.930363][ T391] irq event stamp: 48845
[ 25.930588][ T391] hardirqs last enabled at (48845): [] irqentry_exit+0x3b/0x80
[ 25.930988][ T391] hardirqs last disabled at (48844): [] handle_softirqs+0x47f/0x610
[ 25.931351][ T391] softirqs last enabled at (48740): [] handle_softirqs+0x352/0x610
[ 25.931725][ T391] softirqs last disabled at (48735): [] irq_exit_rcu+0xab/0x100
[ 25.932128][ T391] ---[ end trace 0000000000000000 ]---
[ 25.946219][ T391] ip (391) used greatest stack depth: 24232 bytes left