[ 17.845237][ T272] ==================================================================
[ 17.845626][ T272] BUG: KASAN: slab-use-after-free in kobject_put+0xbb/0xd0
[ 17.845914][ T272] Read of size 1 at addr ffff88800e2f46c4 by task ip/272
[ 17.846117][ T272]
[ 17.846227][ T272] CPU: 2 UID: 0 PID: 272 Comm: ip Not tainted 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 17.846233][ T272] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 17.846236][ T272] Call Trace:
[ 17.846238][ T272]
[ 17.846240][ T272] dump_stack_lvl+0x82/0xc0
[ 17.846247][ T272] print_address_description.constprop.0+0x2c/0x3a0
[ 17.846255][ T272] ? kobject_put+0xbb/0xd0
[ 17.846259][ T272] print_report+0xb4/0x270
[ 17.846263][ T272] ? kobject_put+0xbb/0xd0
[ 17.846266][ T272] ? kasan_addr_to_slab+0x21/0x70
[ 17.846269][ T272] ? kobject_put+0xbb/0xd0
[ 17.846272][ T272] kasan_report+0xca/0x100
[ 17.846276][ T272] ? kobject_put+0xbb/0xd0
[ 17.846282][ T272] kobject_put+0xbb/0xd0
[ 17.846285][ T272] netdev_run_todo+0x5f0/0xc60
[ 17.846292][ T272] ? dev_ingress_queue_create+0x190/0x190
[ 17.846296][ T272] ? generic_xdp_install+0x410/0x410
[ 17.846299][ T272] ? unregister_netdevice_many+0x20/0x20
[ 17.846306][ T272] rtnl_dellink+0x350/0xa30
[ 17.846311][ T272] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 17.846330][ T272] ? find_held_lock+0x2b/0x80
[ 17.846339][ T272] ? __lock_acquire+0x449/0x7e0
[ 17.846345][ T272] ? find_held_lock+0x2b/0x80
[ 17.846349][ T272] ? rtnetlink_rcv_msg+0x6e6/0xc00
[ 17.846352][ T272] ? __lock_release+0x5d/0x170
[ 17.846356][ T272] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 17.846359][ T272] rtnetlink_rcv_msg+0x709/0xc00
[ 17.846363][ T272] ? rtnl_port_fill+0x890/0x890
[ 17.846367][ T272] ? __lock_acquire+0x449/0x7e0
[ 17.846373][ T272] netlink_rcv_skb+0x121/0x340
[ 17.846378][ T272] ? rtnl_port_fill+0x890/0x890
[ 17.846382][ T272] ? netlink_ack+0xdf0/0xdf0
[ 17.846389][ T272] ? netlink_deliver_tap+0x13e/0x340
[ 17.846391][ T272] ? netlink_deliver_tap+0xc3/0x340
[ 17.846395][ T272] netlink_unicast+0x4aa/0x780
[ 17.846399][ T272] ? netlink_attachskb+0x810/0x810
[ 17.846404][ T272] ? __lock_acquire+0x449/0x7e0
[ 17.846411][ T272] netlink_sendmsg+0x714/0xbd0
[ 17.846418][ T272] ? netlink_unicast+0x780/0x780
[ 17.846423][ T272] ? __import_iovec+0x230/0x3b0
[ 17.846431][ T272] ? netlink_unicast+0x780/0x780
[ 17.846436][ T272] ____sys_sendmsg+0x3dd/0x890
[ 17.846444][ T272] ? get_timestamp.constprop.0+0x370/0x370
[ 17.846448][ T272] ? __copy_msghdr+0x3c0/0x3c0
[ 17.846462][ T272] ___sys_sendmsg+0xed/0x170
[ 17.846467][ T272] ? kasan_record_aux_stack+0x8c/0xa0
[ 17.846473][ T272] ? __call_rcu_common.constprop.0+0xa8/0x630
[ 17.846481][ T272] ? copy_msghdr_from_user+0x110/0x110
[ 17.846489][ T272] ? find_held_lock+0x2b/0x80
[ 17.846497][ T272] ? __lock_acquire+0x449/0x7e0
[ 17.846507][ T272] ? find_held_lock+0x2b/0x80
[ 17.846514][ T272] ? __virt_addr_valid+0x22a/0x450
[ 17.846523][ T272] ? __lock_release+0x5d/0x170
[ 17.846534][ T272] __sys_sendmsg+0x10b/0x1a0
[ 17.846538][ T272] ? __call_rcu_common.constprop.0+0x318/0x630
[ 17.846543][ T272] ? __sys_sendmsg_sock+0x20/0x20
[ 17.846557][ T272] ? rcu_is_watching+0x12/0xb0
[ 17.846567][ T272] do_syscall_64+0xc1/0xfd0
[ 17.846576][ T272] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 17.846583][ T272] RIP: 0033:0x7f6f70fde1d7
[ 17.846590][ T272] 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
[ 17.846595][ T272] RSP: 002b:00007fffed578778 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 17.846602][ T272] RAX: ffffffffffffffda RBX: 00007fffed578eb0 RCX: 00007f6f70fde1d7
[ 17.846605][ T272] RDX: 0000000000000000 RSI: 00007fffed5787e0 RDI: 0000000000000005
[ 17.846608][ T272] RBP: 0000000000000001 R08: 0000000000000003 R09: 0000000000000078
[ 17.846611][ T272] R10: 00007f6f70eda510 R11: 0000000000000246 R12: 0000000000000001
[ 17.846614][ T272] R13: 00000000690dfa4a R14: 0000000000499600 R15: 0000000000000000
[ 17.846620][ T272]
[ 17.846622][ T272]
[ 17.860659][ T272] Allocated by task 259:
[ 17.860784][ T272] kasan_save_stack+0x24/0x40
[ 17.860977][ T272] kasan_save_track+0x14/0x30
[ 17.861164][ T272] __kasan_kmalloc+0x7b/0x90
[ 17.861394][ T272] __kvmalloc_node_noprof+0x2e5/0x8e0
[ 17.861563][ T272] alloc_netdev_mqs+0x7d/0x1370
[ 17.861731][ T272] rtnl_create_link+0xa9e/0xe20
[ 17.861895][ T272] rtnl_newlink_create+0x203/0x8f0
[ 17.862186][ T272] __rtnl_newlink+0x231/0xa30
[ 17.862414][ T272] rtnl_newlink+0x693/0xa60
[ 17.862587][ T272] rtnetlink_rcv_msg+0x709/0xc00
[ 17.862748][ T272] netlink_rcv_skb+0x121/0x340
[ 17.863029][ T272] netlink_unicast+0x4aa/0x780
[ 17.863242][ T272] netlink_sendmsg+0x714/0xbd0
[ 17.863447][ T272] ____sys_sendmsg+0x3dd/0x890
[ 17.863615][ T272] ___sys_sendmsg+0xed/0x170
[ 17.863874][ T272] __sys_sendmsg+0x10b/0x1a0
[ 17.864083][ T272] do_syscall_64+0xc1/0xfd0
[ 17.864351][ T272] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 17.864682][ T272]
[ 17.864863][ T272] Freed by task 272:
[ 17.864985][ T272] kasan_save_stack+0x24/0x40
[ 17.865154][ T272] kasan_save_track+0x14/0x30
[ 17.865357][ T272] __kasan_save_free_info+0x3b/0x60
[ 17.865713][ T272] __kasan_slab_free+0x3f/0x60
[ 17.865888][ T272] kfree+0x21d/0x540
[ 17.866030][ T272] device_release+0x9c/0x210
[ 17.866206][ T272] kobject_cleanup+0xfe/0x360
[ 17.866378][ T272] netdev_run_todo+0x81f/0xc60
[ 17.866763][ T272] rtnl_dellink+0x350/0xa30
[ 17.866929][ T272] rtnetlink_rcv_msg+0x709/0xc00
[ 17.867089][ T272] netlink_rcv_skb+0x121/0x340
[ 17.867266][ T272] netlink_unicast+0x4aa/0x780
[ 17.867568][ T272] netlink_sendmsg+0x714/0xbd0
[ 17.867813][ T272] ____sys_sendmsg+0x3dd/0x890
[ 17.867989][ T272] ___sys_sendmsg+0xed/0x170
[ 17.868153][ T272] __sys_sendmsg+0x10b/0x1a0
[ 17.868430][ T272] do_syscall_64+0xc1/0xfd0
[ 17.868653][ T272] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 17.868889][ T272]
[ 17.868975][ T272] The buggy address belongs to the object at ffff88800e2f4000
[ 17.868975][ T272] which belongs to the cache kmalloc-4k of size 4096
[ 17.869525][ T272] The buggy address is located 1732 bytes inside of
[ 17.869525][ T272] freed 4096-byte region [ffff88800e2f4000, ffff88800e2f5000)
[ 17.870091][ T272]
[ 17.870182][ T272] The buggy address belongs to the physical page:
[ 17.870390][ T272] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe2f0
[ 17.870879][ T272] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[ 17.871152][ T272] flags: 0x80000000000040(head|node=0|zone=1)
[ 17.871383][ T272] page_type: f5(slab)
[ 17.871519][ T272] raw: 0080000000000040 ffff888001043700 ffffea0000386c10 ffffea0000182e10
[ 17.872016][ T272] raw: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 17.872316][ T272] head: 0080000000000040 ffff888001043700 ffffea0000386c10 ffffea0000182e10
[ 17.872629][ T272] head: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 17.872929][ T272] head: 0080000000000003 ffffea000038bc01 00000000ffffffff 00000000ffffffff
[ 17.873400][ T272] head: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
[ 17.873731][ T272] page dumped because: kasan: bad access detected
[ 17.873952][ T272]
[ 17.874035][ T272] Memory state around the buggy address:
[ 17.874337][ T272] ffff88800e2f4580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 17.874585][ T272] ffff88800e2f4600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 17.874820][ T272] >ffff88800e2f4680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 17.875309][ T272] ^
[ 17.875606][ T272] ffff88800e2f4700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 17.875944][ T272] ffff88800e2f4780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 17.876181][ T272] ==================================================================
[ 17.877283][ T272] Disabling lock debugging due to kernel taint
[ 17.877581][ T272] ------------[ cut here ]------------
[ 17.877756][ T272] refcount_t: underflow; use-after-free.
[ 17.877961][ T272] WARNING: CPU: 3 PID: 272 at lib/refcount.c:28 refcount_warn_saturate+0x16f/0x1b0
[ 17.878259][ T272] Modules linked in:
[ 17.878404][ T272] CPU: 3 UID: 0 PID: 272 Comm: ip Tainted: G B 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 17.878798][ T272] Tainted: [B]=BAD_PAGE
[ 17.878939][ T272] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 17.879153][ T272] RIP: 0010:refcount_warn_saturate+0x16f/0x1b0
[ 17.879385][ T272] 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 92 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
[ 17.880049][ T272] RSP: 0018:ffffc90000c671f0 EFLAGS: 00010286
[ 17.880262][ T272] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[ 17.880554][ T272] RDX: 0000000000000002 RSI: 0000000000000004 RDI: 0000000000000001
[ 17.880833][ T272] RBP: 0000000000000003 R08: 0000000000000000 R09: fffffbfff2600934
[ 17.881096][ T272] R10: 0000000000000003 R11: ffffc90000c66d80 R12: 0000000000000001
[ 17.881353][ T272] R13: dffffc0000000000 R14: dead000000000122 R15: dead000000000100
[ 17.881644][ T272] FS: 00007f6f70e10800(0000) GS:ffff8880d8c88000(0000) knlGS:0000000000000000
[ 17.881942][ T272] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 17.882165][ T272] CR2: 00007f1e21639c08 CR3: 000000000e08c002 CR4: 0000000000772ef0
[ 17.882440][ T272] PKRU: 55555554
[ 17.882589][ T272] Call Trace:
[ 17.882734][ T272]
[ 17.882817][ T272] netdev_run_todo+0x5f0/0xc60
[ 17.883008][ T272] ? dev_ingress_queue_create+0x190/0x190
[ 17.883186][ T272] ? generic_xdp_install+0x410/0x410
[ 17.883364][ T272] ? unregister_netdevice_many+0x20/0x20
[ 17.883584][ T272] rtnl_dellink+0x350/0xa30
[ 17.883780][ T272] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 17.884002][ T272] ? find_held_lock+0x2b/0x80
[ 17.884185][ T272] ? __lock_acquire+0x449/0x7e0
[ 17.884358][ T272] ? find_held_lock+0x2b/0x80
[ 17.884551][ T272] ? rtnetlink_rcv_msg+0x6e6/0xc00
[ 17.884746][ T272] ? __lock_release+0x5d/0x170
[ 17.884909][ T272] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 17.885128][ T272] rtnetlink_rcv_msg+0x709/0xc00
[ 17.885297][ T272] ? rtnl_port_fill+0x890/0x890
[ 17.885487][ T272] ? __lock_acquire+0x449/0x7e0
[ 17.885679][ T272] netlink_rcv_skb+0x121/0x340
[ 17.885858][ T272] ? rtnl_port_fill+0x890/0x890
[ 17.886030][ T272] ? netlink_ack+0xdf0/0xdf0
[ 17.886230][ T272] ? netlink_deliver_tap+0x13e/0x340
[ 17.886414][ T272] ? netlink_deliver_tap+0xc3/0x340
[ 17.886618][ T272] netlink_unicast+0x4aa/0x780
[ 17.886800][ T272] ? netlink_attachskb+0x810/0x810
[ 17.886965][ T272] ? __lock_acquire+0x449/0x7e0
[ 17.887127][ T272] netlink_sendmsg+0x714/0xbd0
[ 17.887303][ T272] ? netlink_unicast+0x780/0x780
[ 17.887621][ T272] ? __import_iovec+0x230/0x3b0
[ 17.887802][ T272] ? netlink_unicast+0x780/0x780
[ 17.887966][ T272] ____sys_sendmsg+0x3dd/0x890
[ 17.888127][ T272] ? get_timestamp.constprop.0+0x370/0x370
[ 17.888351][ T272] ? __copy_msghdr+0x3c0/0x3c0
[ 17.888550][ T272] ___sys_sendmsg+0xed/0x170
[ 17.888745][ T272] ? kasan_record_aux_stack+0x8c/0xa0
[ 17.888911][ T272] ? __call_rcu_common.constprop.0+0xa8/0x630
[ 17.889116][ T272] ? copy_msghdr_from_user+0x110/0x110
[ 17.889303][ T272] ? find_held_lock+0x2b/0x80
[ 17.889502][ T272] ? __lock_acquire+0x449/0x7e0
[ 17.889693][ T272] ? find_held_lock+0x2b/0x80
[ 17.889866][ T272] ? __virt_addr_valid+0x22a/0x450
[ 17.890037][ T272] ? __lock_release+0x5d/0x170
[ 17.890201][ T272] __sys_sendmsg+0x10b/0x1a0
[ 17.890385][ T272] ? __call_rcu_common.constprop.0+0x318/0x630
[ 17.890634][ T272] ? __sys_sendmsg_sock+0x20/0x20
[ 17.890812][ T272] ? rcu_is_watching+0x12/0xb0
[ 17.890982][ T272] do_syscall_64+0xc1/0xfd0
[ 17.891144][ T272] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 17.891356][ T272] RIP: 0033:0x7f6f70fde1d7
[ 17.891560][ T272] 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
[ 17.892167][ T272] RSP: 002b:00007fffed578778 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 17.892466][ T272] RAX: ffffffffffffffda RBX: 00007fffed578eb0 RCX: 00007f6f70fde1d7
[ 17.892755][ T272] RDX: 0000000000000000 RSI: 00007fffed5787e0 RDI: 0000000000000005
[ 17.893030][ T272] RBP: 0000000000000001 R08: 0000000000000003 R09: 0000000000000078
[ 17.893281][ T272] R10: 00007f6f70eda510 R11: 0000000000000246 R12: 0000000000000001
[ 17.893578][ T272] R13: 00000000690dfa4a R14: 0000000000499600 R15: 0000000000000000
[ 17.893845][ T272]
[ 17.893976][ T272] irq event stamp: 52493
[ 17.894116][ T272] hardirqs last enabled at (52493): [] kasan_quarantine_put+0xf9/0x210
[ 17.894414][ T272] hardirqs last disabled at (52492): [] kasan_quarantine_put+0xac/0x210
[ 17.894760][ T272] softirqs last enabled at (52036): [] handle_softirqs+0x352/0x610
[ 17.895047][ T272] softirqs last disabled at (52029): [] irq_exit_rcu+0xab/0x100
[ 17.895327][ T272] ---[ end trace 0000000000000000 ]---