[ 16.926929][ T276] br0: port 1(veth1) entered blocking state
[ 16.927663][ T276] br0: port 1(veth1) entered disabled state
[ 16.928271][ T276] veth1: entered allmulticast mode
[ 16.933329][ T276] veth1: entered promiscuous mode
[ 17.052771][ T278] br0: port 2(veth3) entered blocking state
[ 17.053253][ T278] br0: port 2(veth3) entered disabled state
[ 17.053693][ T278] veth3: entered allmulticast mode
[ 17.057571][ T278] veth3: entered promiscuous mode
[ 17.415670][ T131] br0: port 1(veth1) entered blocking state
[ 17.416331][ T131] br0: port 1(veth1) entered forwarding state
[ 17.659102][ T37] br0: port 2(veth3) entered blocking state
[ 17.659575][ T37] br0: port 2(veth3) entered forwarding state
[ 24.270110][ T313] br0: port 2(veth3) entered disabled state
[ 24.497534][ T315] br0: port 1(veth1) entered disabled state
[ 24.738612][ T317] veth3: left allmulticast mode
[ 24.739112][ T317] veth3: left promiscuous mode
[ 24.739631][ T317] br0: port 2(veth3) entered disabled state
[ 24.742262][ T317] veth1: left allmulticast mode
[ 24.742597][ T317] veth1: left promiscuous mode
[ 24.743434][ T317] br0: port 1(veth1) entered disabled state
[ 24.786622][ T317] ==================================================================
[ 24.786937][ T317] BUG: KASAN: slab-use-after-free in kobject_put+0xbb/0xd0
[ 24.787226][ T317] Read of size 1 at addr ffff888008d026ac by task ip/317
[ 24.787464][ T317]
[ 24.787564][ T317] CPU: 3 UID: 0 PID: 317 Comm: ip Not tainted 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 24.787569][ T317] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 24.787572][ T317] Call Trace:
[ 24.787574][ T317]
[ 24.787576][ T317] dump_stack_lvl+0x82/0xc0
[ 24.787582][ T317] print_address_description.constprop.0+0x2c/0x3a0
[ 24.787588][ T317] ? kobject_put+0xbb/0xd0
[ 24.787592][ T317] print_report+0xb4/0x270
[ 24.787595][ T317] ? kobject_put+0xbb/0xd0
[ 24.787598][ T317] ? kasan_addr_to_slab+0x21/0x70
[ 24.787601][ T317] ? kobject_put+0xbb/0xd0
[ 24.787605][ T317] kasan_report+0xca/0x100
[ 24.787608][ T317] ? kobject_put+0xbb/0xd0
[ 24.787613][ T317] kobject_put+0xbb/0xd0
[ 24.787617][ T317] netdev_run_todo+0x5f0/0xc60
[ 24.787621][ T317] ? dev_ingress_queue_create+0x190/0x190
[ 24.787625][ T317] ? generic_xdp_install+0x410/0x410
[ 24.787627][ T317] ? kernfs_put.part.0+0x12d/0x480
[ 24.787632][ T317] ? unregister_netdevice_many+0x20/0x20
[ 24.787637][ T317] ? br_dev_delete+0x115/0x1a0 [bridge]
[ 24.787673][ T317] rtnl_dellink+0x350/0xa30
[ 24.787678][ T317] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 24.787697][ T317] ? find_held_lock+0x2b/0x80
[ 24.787703][ T317] ? __lock_acquire+0x449/0x7e0
[ 24.787708][ T317] ? find_held_lock+0x2b/0x80
[ 24.787712][ T317] ? rtnetlink_rcv_msg+0x6e6/0xc00
[ 24.787715][ T317] ? __lock_release+0x5d/0x170
[ 24.787719][ T317] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 24.787722][ T317] rtnetlink_rcv_msg+0x709/0xc00
[ 24.787726][ T317] ? rtnl_port_fill+0x850/0x850
[ 24.787728][ T317] ? __lock_acquire+0x449/0x7e0
[ 24.787735][ T317] netlink_rcv_skb+0x121/0x340
[ 24.787739][ T317] ? rtnl_port_fill+0x850/0x850
[ 24.787742][ T317] ? netlink_ack+0xdd0/0xdd0
[ 24.787749][ T317] ? netlink_deliver_tap+0x13e/0x340
[ 24.787751][ T317] ? netlink_deliver_tap+0xc3/0x340
[ 24.787755][ T317] netlink_unicast+0x4aa/0x780
[ 24.787759][ T317] ? netlink_attachskb+0x810/0x810
[ 24.787763][ T317] ? __lock_acquire+0x449/0x7e0
[ 24.787768][ T317] netlink_sendmsg+0x714/0xbd0
[ 24.787772][ T317] ? netlink_unicast+0x780/0x780
[ 24.787776][ T317] ? __import_iovec+0x230/0x3b0
[ 24.787781][ T317] ? netlink_unicast+0x780/0x780
[ 24.787784][ T317] ____sys_sendmsg+0x3dd/0x890
[ 24.787789][ T317] ? get_timestamp.constprop.0+0x380/0x380
[ 24.787792][ T317] ? __copy_msghdr+0x3c0/0x3c0
[ 24.787799][ T317] ___sys_sendmsg+0xed/0x170
[ 24.787802][ T317] ? kasan_record_aux_stack+0x8c/0xa0
[ 24.787805][ T317] ? __call_rcu_common.constprop.0+0xa8/0x630
[ 24.787810][ T317] ? copy_msghdr_from_user+0x110/0x110
[ 24.787815][ T317] ? find_held_lock+0x2b/0x80
[ 24.787820][ T317] ? __lock_acquire+0x449/0x7e0
[ 24.787825][ T317] ? find_held_lock+0x2b/0x80
[ 24.787828][ T317] ? __virt_addr_valid+0x22a/0x450
[ 24.787833][ T317] ? __lock_release+0x5d/0x170
[ 24.787839][ T317] __sys_sendmsg+0x10b/0x1a0
[ 24.787842][ T317] ? __call_rcu_common.constprop.0+0x318/0x630
[ 24.787846][ T317] ? __sys_sendmsg_sock+0x20/0x20
[ 24.787853][ T317] ? rcu_is_watching+0x12/0xb0
[ 24.787857][ T317] do_syscall_64+0xc1/0xfd0
[ 24.787862][ T317] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 24.787865][ T317] RIP: 0033:0x7fcb153ef1d7
[ 24.787870][ T317] 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
[ 24.787873][ T317] RSP: 002b:00007ffc85fa16d8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 24.787877][ T317] RAX: ffffffffffffffda RBX: 00007ffc85fa1e00 RCX: 00007fcb153ef1d7
[ 24.787880][ T317] RDX: 0000000000000000 RSI: 00007ffc85fa1740 RDI: 0000000000000005
[ 24.787881][ T317] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078
[ 24.787883][ T317] R10: 00007fcb152ebf60 R11: 0000000000000246 R12: 0000000000000002
[ 24.787885][ T317] R13: 00000000690dfb45 R14: 0000000000499600 R15: 0000000000000000
[ 24.787891][ T317]
[ 24.787892][ T317]
[ 24.802288][ T317] Allocated by task 274:
[ 24.802430][ T317] kasan_save_stack+0x24/0x40
[ 24.802627][ T317] kasan_save_track+0x14/0x30
[ 24.802812][ T317] __kasan_kmalloc+0x7b/0x90
[ 24.803091][ T317] __kvmalloc_node_noprof+0x2e5/0x8e0
[ 24.803290][ T317] alloc_netdev_mqs+0x7d/0x1370
[ 24.803474][ T317] rtnl_create_link+0xa9e/0xe20
[ 24.803666][ T317] rtnl_newlink_create+0x203/0x770
[ 24.803944][ T317] __rtnl_newlink+0x231/0xa30
[ 24.804122][ T317] rtnl_newlink+0x693/0xa60
[ 24.804311][ T317] rtnetlink_rcv_msg+0x709/0xc00
[ 24.804500][ T317] netlink_rcv_skb+0x121/0x340
[ 24.804783][ T317] netlink_unicast+0x4aa/0x780
[ 24.804960][ T317] netlink_sendmsg+0x714/0xbd0
[ 24.805138][ T317] ____sys_sendmsg+0x3dd/0x890
[ 24.805337][ T317] ___sys_sendmsg+0xed/0x170
[ 24.805722][ T317] __sys_sendmsg+0x10b/0x1a0
[ 24.805901][ T317] do_syscall_64+0xc1/0xfd0
[ 24.806086][ T317] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 24.806334][ T317]
[ 24.806518][ T317] Freed by task 317:
[ 24.806672][ T317] kasan_save_stack+0x24/0x40
[ 24.806854][ T317] kasan_save_track+0x14/0x30
[ 24.807035][ T317] __kasan_save_free_info+0x3b/0x60
[ 24.807332][ T317] __kasan_slab_free+0x3f/0x60
[ 24.807517][ T317] kfree+0x21d/0x540
[ 24.807753][ T317] device_release+0x9c/0x210
[ 24.807951][ T317] kobject_cleanup+0xfe/0x360
[ 24.808131][ T317] netdev_run_todo+0x81f/0xc60
[ 24.808328][ T317] rtnl_dellink+0x350/0xa30
[ 24.808505][ T317] rtnetlink_rcv_msg+0x709/0xc00
[ 24.808697][ T317] netlink_rcv_skb+0x121/0x340
[ 24.808878][ T317] netlink_unicast+0x4aa/0x780
[ 24.809153][ T317] netlink_sendmsg+0x714/0xbd0
[ 24.809351][ T317] ____sys_sendmsg+0x3dd/0x890
[ 24.809540][ T317] ___sys_sendmsg+0xed/0x170
[ 24.809730][ T317] __sys_sendmsg+0x10b/0x1a0
[ 24.809908][ T317] do_syscall_64+0xc1/0xfd0
[ 24.810083][ T317] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 24.810325][ T317]
[ 24.810421][ T317] Last potentially related work creation:
[ 24.810606][ T317] kasan_save_stack+0x24/0x40
[ 24.810896][ T317] kasan_record_aux_stack+0x8c/0xa0
[ 24.811086][ T317] insert_work+0x34/0x230
[ 24.811237][ T317] __queue_work+0x5fd/0xab0
[ 24.811524][ T317] queue_work_on+0x84/0x90
[ 24.811713][ T317] br_multicast_dev_del+0xeb/0x240 [bridge]
[ 24.811978][ T317] br_dev_uninit+0x19/0x40 [bridge]
[ 24.812187][ T317] unregister_netdevice_many_notify+0xa80/0x1b30
[ 24.812429][ T317] rtnl_dellink+0x344/0xa30
[ 24.812626][ T317] rtnetlink_rcv_msg+0x709/0xc00
[ 24.812909][ T317] netlink_rcv_skb+0x121/0x340
[ 24.813092][ T317] netlink_unicast+0x4aa/0x780
[ 24.813289][ T317] netlink_sendmsg+0x714/0xbd0
[ 24.813472][ T317] ____sys_sendmsg+0x3dd/0x890
[ 24.813662][ T317] ___sys_sendmsg+0xed/0x170
[ 24.813849][ T317] __sys_sendmsg+0x10b/0x1a0
[ 24.814135][ T317] do_syscall_64+0xc1/0xfd0
[ 24.814339][ T317] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 24.814574][ T317]
[ 24.814766][ T317] Second to last potentially related work creation:
[ 24.814990][ T317] kasan_save_stack+0x24/0x40
[ 24.815176][ T317] kasan_record_aux_stack+0x8c/0xa0
[ 24.815366][ T317] insert_work+0x34/0x230
[ 24.815508][ T317] __queue_work+0x5fd/0xab0
[ 24.815693][ T317] queue_work_on+0x84/0x90
[ 24.815876][ T317] fdb_delete+0x7bf/0xd50 [bridge]
[ 24.816088][ T317] br_fdb_delete_by_port+0x1ce/0x260 [bridge]
[ 24.816356][ T317] del_nbp+0x374/0xbe0 [bridge]
[ 24.816581][ T317] br_dev_delete+0x91/0x1a0 [bridge]
[ 24.816891][ T317] rtnl_dellink+0x334/0xa30
[ 24.817084][ T317] rtnetlink_rcv_msg+0x709/0xc00
[ 24.817280][ T317] netlink_rcv_skb+0x121/0x340
[ 24.817480][ T317] netlink_unicast+0x4aa/0x780
[ 24.817673][ T317] netlink_sendmsg+0x714/0xbd0
[ 24.817858][ T317] ____sys_sendmsg+0x3dd/0x890
[ 24.818039][ T317] ___sys_sendmsg+0xed/0x170
[ 24.818231][ T317] __sys_sendmsg+0x10b/0x1a0
[ 24.818525][ T317] do_syscall_64+0xc1/0xfd0
[ 24.818717][ T317] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 24.818947][ T317]
[ 24.819038][ T317] The buggy address belongs to the object at ffff888008d02000
[ 24.819038][ T317] which belongs to the cache kmalloc-8k of size 8192
[ 24.819492][ T317] The buggy address is located 1708 bytes inside of
[ 24.819492][ T317] freed 8192-byte region [ffff888008d02000, ffff888008d04000)
[ 24.820126][ T317]
[ 24.820231][ T317] The buggy address belongs to the physical page:
[ 24.820458][ T317] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x8d00
[ 24.820887][ T317] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[ 24.821160][ T317] flags: 0x80000000000040(head|node=0|zone=1)
[ 24.821407][ T317] page_type: f5(slab)
[ 24.821558][ T317] raw: 0080000000000040 ffff8880010438c0 ffffea0000373810 ffff888001041228
[ 24.821886][ T317] raw: 0000000000000000 0000000000010001 00000000f5000000 0000000000000000
[ 24.822222][ T317] head: 0080000000000040 ffff8880010438c0 ffffea0000373810 ffff888001041228
[ 24.822557][ T317] head: 0000000000000000 0000000000010001 00000000f5000000 0000000000000000
[ 24.822880][ T317] head: 0080000000000003 ffffea0000234001 00000000ffffffff 00000000ffffffff
[ 24.823438][ T317] head: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
[ 24.823767][ T317] page dumped because: kasan: bad access detected
[ 24.824084][ T317]
[ 24.824179][ T317] Memory state around the buggy address:
[ 24.824359][ T317] ffff888008d02580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 24.824627][ T317] ffff888008d02600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 24.824985][ T317] >ffff888008d02680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 24.825260][ T317] ^
[ 24.825433][ T317] ffff888008d02700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 24.825783][ T317] ffff888008d02780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 24.826039][ T317] ==================================================================
[ 24.826946][ T317] Disabling lock debugging due to kernel taint
[ 24.827260][ T317] ------------[ cut here ]------------
[ 24.827431][ T317] refcount_t: underflow; use-after-free.
[ 24.827617][ T317] WARNING: CPU: 1 PID: 317 at lib/refcount.c:28 refcount_warn_saturate+0x16f/0x1b0
[ 24.827928][ T317] Modules linked in: bridge stp llc veth
[ 24.828141][ T317] CPU: 1 UID: 0 PID: 317 Comm: ip Tainted: G B 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 24.828468][ T317] Tainted: [B]=BAD_PAGE
[ 24.828595][ T317] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 24.828796][ T317] RIP: 0010:refcount_warn_saturate+0x16f/0x1b0
[ 24.829028][ T317] 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 a5 a5 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
[ 24.829721][ T317] RSP: 0018:ffffc900008471f0 EFLAGS: 00010286
[ 24.830021][ T317] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[ 24.830275][ T317] RDX: 0000000000000002 RSI: 0000000000000004 RDI: 0000000000000001
[ 24.830517][ T317] RBP: 0000000000000003 R08: 0000000000000000 R09: fffffbfff4c7e134
[ 24.830758][ T317] R10: 0000000000000003 R11: ffffc90000846d80 R12: 0000000000000001
[ 24.831161][ T317] R13: dffffc0000000000 R14: dead000000000122 R15: dead000000000100
[ 24.831410][ T317] FS: 00007fcb15221800(0000) GS:ffff88808ea72000(0000) knlGS:0000000000000000
[ 24.831692][ T317] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 24.831904][ T317] CR2: 00007fc7f23d8b60 CR3: 000000000dcc2003 CR4: 0000000000772ef0
[ 24.832161][ T317] PKRU: 55555554
[ 24.832291][ T317] Call Trace:
[ 24.832415][ T317]
[ 24.832500][ T317] netdev_run_todo+0x5f0/0xc60
[ 24.832668][ T317] ? dev_ingress_queue_create+0x190/0x190
[ 24.832838][ T317] ? generic_xdp_install+0x410/0x410
[ 24.832998][ T317] ? kernfs_put.part.0+0x12d/0x480
[ 24.833175][ T317] ? unregister_netdevice_many+0x20/0x20
[ 24.833344][ T317] ? br_dev_delete+0x115/0x1a0 [bridge]
[ 24.833539][ T317] rtnl_dellink+0x350/0xa30
[ 24.833701][ T317] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 24.833922][ T317] ? find_held_lock+0x2b/0x80
[ 24.834100][ T317] ? __lock_acquire+0x449/0x7e0
[ 24.834267][ T317] ? find_held_lock+0x2b/0x80
[ 24.834428][ T317] ? rtnetlink_rcv_msg+0x6e6/0xc00
[ 24.834586][ T317] ? __lock_release+0x5d/0x170
[ 24.834745][ T317] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 24.834949][ T317] rtnetlink_rcv_msg+0x709/0xc00
[ 24.835124][ T317] ? rtnl_port_fill+0x850/0x850
[ 24.835302][ T317] ? __lock_acquire+0x449/0x7e0
[ 24.835463][ T317] netlink_rcv_skb+0x121/0x340
[ 24.835622][ T317] ? rtnl_port_fill+0x850/0x850
[ 24.835782][ T317] ? netlink_ack+0xdd0/0xdd0
[ 24.835955][ T317] ? netlink_deliver_tap+0x13e/0x340
[ 24.836128][ T317] ? netlink_deliver_tap+0xc3/0x340
[ 24.836298][ T317] netlink_unicast+0x4aa/0x780
[ 24.836467][ T317] ? netlink_attachskb+0x810/0x810
[ 24.836626][ T317] ? __lock_acquire+0x449/0x7e0
[ 24.836790][ T317] netlink_sendmsg+0x714/0xbd0
[ 24.836962][ T317] ? netlink_unicast+0x780/0x780
[ 24.837136][ T317] ? __import_iovec+0x230/0x3b0
[ 24.837305][ T317] ? netlink_unicast+0x780/0x780
[ 24.837483][ T317] ____sys_sendmsg+0x3dd/0x890
[ 24.837645][ T317] ? get_timestamp.constprop.0+0x380/0x380
[ 24.837855][ T317] ? __copy_msghdr+0x3c0/0x3c0
[ 24.838030][ T317] ___sys_sendmsg+0xed/0x170
[ 24.838197][ T317] ? kasan_record_aux_stack+0x8c/0xa0
[ 24.838365][ T317] ? __call_rcu_common.constprop.0+0xa8/0x630
[ 24.838567][ T317] ? copy_msghdr_from_user+0x110/0x110
[ 24.838728][ T317] ? find_held_lock+0x2b/0x80
[ 24.838901][ T317] ? __lock_acquire+0x449/0x7e0
[ 24.839080][ T317] ? find_held_lock+0x2b/0x80
[ 24.839258][ T317] ? __virt_addr_valid+0x22a/0x450
[ 24.839426][ T317] ? __lock_release+0x5d/0x170
[ 24.839590][ T317] __sys_sendmsg+0x10b/0x1a0
[ 24.839755][ T317] ? __call_rcu_common.constprop.0+0x318/0x630
[ 24.839963][ T317] ? __sys_sendmsg_sock+0x20/0x20
[ 24.840143][ T317] ? rcu_is_watching+0x12/0xb0
[ 24.840311][ T317] do_syscall_64+0xc1/0xfd0
[ 24.840479][ T317] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 24.840679][ T317] RIP: 0033:0x7fcb153ef1d7
[ 24.840864][ T317] 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
[ 24.841462][ T317] RSP: 002b:00007ffc85fa16d8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 24.841715][ T317] RAX: ffffffffffffffda RBX: 00007ffc85fa1e00 RCX: 00007fcb153ef1d7
[ 24.841966][ T317] RDX: 0000000000000000 RSI: 00007ffc85fa1740 RDI: 0000000000000005
[ 24.842221][ T317] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078
[ 24.842463][ T317] R10: 00007fcb152ebf60 R11: 0000000000000246 R12: 0000000000000002
[ 24.842705][ T317] R13: 00000000690dfb45 R14: 0000000000499600 R15: 0000000000000000
[ 24.842956][ T317]
[ 24.843091][ T317] irq event stamp: 52173
[ 24.843219][ T317] hardirqs last enabled at (52173): [] finish_task_switch.isra.0+0x245/0x960
[ 24.843545][ T317] hardirqs last disabled at (52172): [] __schedule+0x94a/0x1b10
[ 24.843842][ T317] softirqs last enabled at (51080): [] handle_softirqs+0x352/0x610
[ 24.844132][ T317] softirqs last disabled at (51073): [] irq_exit_rcu+0xab/0x100
[ 24.844421][ T317] ---[ end trace 0000000000000000 ]---