[ 18.733069][ T289] 8021q: 802.1Q VLAN Support v1.8
[ 23.000046][ T325] br1: port 1(veth1) entered blocking state
[ 23.000624][ T325] br1: port 1(veth1) entered disabled state
[ 23.001173][ T325] veth1: entered allmulticast mode
[ 23.004990][ T325] veth1: entered promiscuous mode
[ 23.136247][ T37] br1: port 1(veth1) entered blocking state
[ 23.136839][ T37] br1: port 1(veth1) entered forwarding state
[ 56.801713][ T505] br1: port 1(veth1) entered disabled state
[ 56.923983][ T506] veth1: left allmulticast mode
[ 56.924341][ T506] veth1: left promiscuous mode
[ 56.924831][ T506] br1: port 1(veth1) entered disabled state
[ 57.077115][ T507] ==================================================================
[ 57.077625][ T507] BUG: KASAN: slab-use-after-free in kobject_put+0xbb/0xd0
[ 57.077903][ T507] Read of size 1 at addr ffff888004cca6ac by task ip/507
[ 57.078184][ T507]
[ 57.078290][ T507] CPU: 2 UID: 0 PID: 507 Comm: ip Not tainted 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 57.078298][ T507] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 57.078306][ T507] Call Trace:
[ 57.078308][ T507]
[ 57.078310][ T507] dump_stack_lvl+0x82/0xc0
[ 57.078317][ T507] print_address_description.constprop.0+0x2c/0x3a0
[ 57.078323][ T507] ? kobject_put+0xbb/0xd0
[ 57.078327][ T507] print_report+0xb4/0x270
[ 57.078330][ T507] ? kobject_put+0xbb/0xd0
[ 57.078334][ T507] ? kasan_addr_to_slab+0x21/0x70
[ 57.078337][ T507] ? kobject_put+0xbb/0xd0
[ 57.078340][ T507] kasan_report+0xca/0x100
[ 57.078343][ T507] ? kobject_put+0xbb/0xd0
[ 57.078349][ T507] kobject_put+0xbb/0xd0
[ 57.078352][ T507] netdev_run_todo+0x5f0/0xc60
[ 57.078357][ T507] ? dev_ingress_queue_create+0x190/0x190
[ 57.078360][ T507] ? generic_xdp_install+0x410/0x410
[ 57.078362][ T507] ? kernfs_put.part.0+0x12d/0x480
[ 57.078370][ T507] ? unregister_netdevice_many+0x20/0x20
[ 57.078375][ T507] ? br_dev_delete+0x115/0x1a0 [bridge]
[ 57.078410][ T507] rtnl_dellink+0x350/0xa30
[ 57.078415][ T507] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 57.078434][ T507] ? find_held_lock+0x2b/0x80
[ 57.078440][ T507] ? __lock_acquire+0x449/0x7e0
[ 57.078447][ T507] ? find_held_lock+0x2b/0x80
[ 57.078451][ T507] ? rtnetlink_rcv_msg+0x6e6/0xc00
[ 57.078453][ T507] ? __lock_release+0x5d/0x170
[ 57.078458][ T507] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 57.078461][ T507] rtnetlink_rcv_msg+0x709/0xc00
[ 57.078465][ T507] ? rtnl_port_fill+0x850/0x850
[ 57.078467][ T507] ? __lock_acquire+0x449/0x7e0
[ 57.078474][ T507] netlink_rcv_skb+0x121/0x340
[ 57.078478][ T507] ? rtnl_port_fill+0x850/0x850
[ 57.078481][ T507] ? netlink_ack+0xdd0/0xdd0
[ 57.078488][ T507] ? netlink_deliver_tap+0x13e/0x340
[ 57.078491][ T507] ? netlink_deliver_tap+0xc3/0x340
[ 57.078494][ T507] netlink_unicast+0x4aa/0x780
[ 57.078498][ T507] ? netlink_attachskb+0x810/0x810
[ 57.078502][ T507] ? __lock_acquire+0x449/0x7e0
[ 57.078507][ T507] netlink_sendmsg+0x714/0xbd0
[ 57.078512][ T507] ? netlink_unicast+0x780/0x780
[ 57.078515][ T507] ? __import_iovec+0x230/0x3b0
[ 57.078522][ T507] ? netlink_unicast+0x780/0x780
[ 57.078525][ T507] ____sys_sendmsg+0x3dd/0x890
[ 57.078532][ T507] ? get_timestamp.constprop.0+0x380/0x380
[ 57.078535][ T507] ? __copy_msghdr+0x3c0/0x3c0
[ 57.078542][ T507] ___sys_sendmsg+0xed/0x170
[ 57.078545][ T507] ? kasan_record_aux_stack+0x8c/0xa0
[ 57.078547][ T507] ? __call_rcu_common.constprop.0+0xa8/0x630
[ 57.078556][ T507] ? copy_msghdr_from_user+0x110/0x110
[ 57.078561][ T507] ? find_held_lock+0x2b/0x80
[ 57.078565][ T507] ? __lock_acquire+0x449/0x7e0
[ 57.078571][ T507] ? find_held_lock+0x2b/0x80
[ 57.078574][ T507] ? __virt_addr_valid+0x22a/0x450
[ 57.078580][ T507] ? __lock_release+0x5d/0x170
[ 57.078587][ T507] __sys_sendmsg+0x10b/0x1a0
[ 57.078590][ T507] ? __call_rcu_common.constprop.0+0x318/0x630
[ 57.078594][ T507] ? __sys_sendmsg_sock+0x20/0x20
[ 57.078601][ T507] ? rcu_is_watching+0x12/0xb0
[ 57.078605][ T507] do_syscall_64+0xc1/0xfd0
[ 57.078610][ T507] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 57.078614][ T507] RIP: 0033:0x7f0eb317d1d7
[ 57.078621][ T507] 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
[ 57.078623][ T507] RSP: 002b:00007fff1224e088 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 57.078628][ T507] RAX: ffffffffffffffda RBX: 00007fff1224e7b0 RCX: 00007f0eb317d1d7
[ 57.078630][ T507] RDX: 0000000000000000 RSI: 00007fff1224e0f0 RDI: 0000000000000005
[ 57.078632][ T507] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078
[ 57.078634][ T507] R10: 00007f0eb3079f60 R11: 0000000000000246 R12: 0000000000000002
[ 57.078635][ T507] R13: 00000000690df8f4 R14: 0000000000499600 R15: 0000000000000000
[ 57.078641][ T507]
[ 57.078643][ T507]
[ 57.093583][ T507] Allocated by task 320:
[ 57.093762][ T507] kasan_save_stack+0x24/0x40
[ 57.093957][ T507] kasan_save_track+0x14/0x30
[ 57.094118][ T507] __kasan_kmalloc+0x7b/0x90
[ 57.094294][ T507] __kvmalloc_node_noprof+0x2e5/0x8e0
[ 57.094466][ T507] alloc_netdev_mqs+0x7d/0x1370
[ 57.094631][ T507] rtnl_create_link+0xa9e/0xe20
[ 57.094807][ T507] rtnl_newlink_create+0x203/0x770
[ 57.094978][ T507] __rtnl_newlink+0x231/0xa30
[ 57.095140][ T507] rtnl_newlink+0x693/0xa60
[ 57.095320][ T507] rtnetlink_rcv_msg+0x709/0xc00
[ 57.095482][ T507] netlink_rcv_skb+0x121/0x340
[ 57.095656][ T507] netlink_unicast+0x4aa/0x780
[ 57.095816][ T507] netlink_sendmsg+0x714/0xbd0
[ 57.095982][ T507] ____sys_sendmsg+0x3dd/0x890
[ 57.096144][ T507] ___sys_sendmsg+0xed/0x170
[ 57.096325][ T507] __sys_sendmsg+0x10b/0x1a0
[ 57.096492][ T507] do_syscall_64+0xc1/0xfd0
[ 57.096657][ T507] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 57.096860][ T507]
[ 57.096946][ T507] Freed by task 507:
[ 57.097067][ T507] kasan_save_stack+0x24/0x40
[ 57.097241][ T507] kasan_save_track+0x14/0x30
[ 57.097418][ T507] __kasan_save_free_info+0x3b/0x60
[ 57.097586][ T507] __kasan_slab_free+0x3f/0x60
[ 57.097747][ T507] kfree+0x21d/0x540
[ 57.097875][ T507] device_release+0x9c/0x210
[ 57.098052][ T507] kobject_cleanup+0xfe/0x360
[ 57.098214][ T507] netdev_run_todo+0x81f/0xc60
[ 57.098395][ T507] rtnl_dellink+0x350/0xa30
[ 57.098655][ T507] rtnetlink_rcv_msg+0x709/0xc00
[ 57.098820][ T507] netlink_rcv_skb+0x121/0x340
[ 57.098988][ T507] netlink_unicast+0x4aa/0x780
[ 57.099151][ T507] netlink_sendmsg+0x714/0xbd0
[ 57.099331][ T507] ____sys_sendmsg+0x3dd/0x890
[ 57.099492][ T507] ___sys_sendmsg+0xed/0x170
[ 57.099653][ T507] __sys_sendmsg+0x10b/0x1a0
[ 57.099826][ T507] do_syscall_64+0xc1/0xfd0
[ 57.100083][ T507] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 57.100296][ T507]
[ 57.100392][ T507] Last potentially related work creation:
[ 57.100556][ T507] kasan_save_stack+0x24/0x40
[ 57.100748][ T507] kasan_record_aux_stack+0x8c/0xa0
[ 57.101013][ T507] insert_work+0x34/0x230
[ 57.101138][ T507] __queue_work+0x5fd/0xab0
[ 57.101316][ T507] queue_work_on+0x84/0x90
[ 57.101480][ T507] br_multicast_del_mdb_entry+0x95d/0xfe0 [bridge]
[ 57.101825][ T507] br_multicast_dev_del+0xeb/0x240 [bridge]
[ 57.102063][ T507] br_dev_uninit+0x19/0x40 [bridge]
[ 57.102257][ T507] unregister_netdevice_many_notify+0xa80/0x1b30
[ 57.102571][ T507] rtnl_dellink+0x344/0xa30
[ 57.102736][ T507] rtnetlink_rcv_msg+0x709/0xc00
[ 57.102898][ T507] netlink_rcv_skb+0x121/0x340
[ 57.103066][ T507] netlink_unicast+0x4aa/0x780
[ 57.103233][ T507] netlink_sendmsg+0x714/0xbd0
[ 57.103632][ T507] ____sys_sendmsg+0x3dd/0x890
[ 57.103818][ T507] ___sys_sendmsg+0xed/0x170
[ 57.103984][ T507] __sys_sendmsg+0x10b/0x1a0
[ 57.104146][ T507] do_syscall_64+0xc1/0xfd0
[ 57.104331][ T507] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 57.104535][ T507]
[ 57.104623][ T507] Second to last potentially related work creation:
[ 57.104929][ T507] kasan_save_stack+0x24/0x40
[ 57.105102][ T507] kasan_record_aux_stack+0x8c/0xa0
[ 57.105267][ T507] insert_work+0x34/0x230
[ 57.105402][ T507] __queue_work+0x5fd/0xab0
[ 57.105686][ T507] queue_work_on+0x84/0x90
[ 57.105852][ T507] br_multicast_dev_del+0xeb/0x240 [bridge]
[ 57.106086][ T507] br_dev_uninit+0x19/0x40 [bridge]
[ 57.106281][ T507] unregister_netdevice_many_notify+0xa80/0x1b30
[ 57.106605][ T507] rtnl_dellink+0x344/0xa30
[ 57.106851][ T507] rtnetlink_rcv_msg+0x709/0xc00
[ 57.107030][ T507] netlink_rcv_skb+0x121/0x340
[ 57.107247][ T507] netlink_unicast+0x4aa/0x780
[ 57.107442][ T507] netlink_sendmsg+0x714/0xbd0
[ 57.107668][ T507] ____sys_sendmsg+0x3dd/0x890
[ 57.107850][ T507] ___sys_sendmsg+0xed/0x170
[ 57.108121][ T507] __sys_sendmsg+0x10b/0x1a0
[ 57.108306][ T507] do_syscall_64+0xc1/0xfd0
[ 57.108537][ T507] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 57.108817][ T507]
[ 57.108941][ T507] The buggy address belongs to the object at ffff888004cca000
[ 57.108941][ T507] which belongs to the cache kmalloc-8k of size 8192
[ 57.109630][ T507] The buggy address is located 1708 bytes inside of
[ 57.109630][ T507] freed 8192-byte region [ffff888004cca000, ffff888004ccc000)
[ 57.110213][ T507]
[ 57.110327][ T507] The buggy address belongs to the physical page:
[ 57.110596][ T507] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x4cc8
[ 57.110887][ T507] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[ 57.111141][ T507] flags: 0x80000000000040(head|node=0|zone=1)
[ 57.111467][ T507] page_type: f5(slab)
[ 57.111595][ T507] raw: 0080000000000040 ffff8880010438c0 ffffea00002f2010 ffff888001041228
[ 57.111889][ T507] raw: 0000000000000000 0000000000010001 00000000f5000000 0000000000000000
[ 57.112174][ T507] head: 0080000000000040 ffff8880010438c0 ffffea00002f2010 ffff888001041228
[ 57.112580][ T507] head: 0000000000000000 0000000000010001 00000000f5000000 0000000000000000
[ 57.112973][ T507] head: 0080000000000003 ffffea0000133201 00000000ffffffff 00000000ffffffff
[ 57.113378][ T507] head: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
[ 57.113780][ T507] page dumped because: kasan: bad access detected
[ 57.113990][ T507]
[ 57.114082][ T507] Memory state around the buggy address:
[ 57.114392][ T507] ffff888004cca580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 57.114648][ T507] ffff888004cca600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 57.114977][ T507] >ffff888004cca680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 57.115218][ T507] ^
[ 57.115399][ T507] ffff888004cca700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 57.115715][ T507] ffff888004cca780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 57.115955][ T507] ==================================================================
[ 57.116345][ T507] Disabling lock debugging due to kernel taint
[ 57.116774][ T507] ------------[ cut here ]------------
[ 57.117049][ T507] refcount_t: underflow; use-after-free.
[ 57.117440][ T507] WARNING: CPU: 0 PID: 507 at lib/refcount.c:28 refcount_warn_saturate+0x16f/0x1b0
[ 57.117950][ T507] Modules linked in: bridge stp llc 8021q vrf veth
[ 57.118532][ T507] CPU: 0 UID: 0 PID: 507 Comm: ip Tainted: G B 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 57.119120][ T507] Tainted: [B]=BAD_PAGE
[ 57.119358][ T507] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 57.119733][ T507] RIP: 0010:refcount_warn_saturate+0x16f/0x1b0
[ 57.120130][ T507] 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 05 9e 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
[ 57.121567][ T507] RSP: 0000:ffffc90000af71f0 EFLAGS: 00010286
[ 57.121944][ T507] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[ 57.122393][ T507] RDX: 0000000000000002 RSI: 0000000000000004 RDI: 0000000000000001
[ 57.122827][ T507] RBP: 0000000000000003 R08: 0000000000000000 R09: fffffbfff3d3e134
[ 57.123266][ T507] R10: 0000000000000003 R11: ffffc90000af6d80 R12: 0000000000000001
[ 57.123740][ T507] R13: dffffc0000000000 R14: dead000000000122 R15: dead000000000100
[ 57.124167][ T507] FS: 00007f0eb2faf800(0000) GS:ffff8880963f2000(0000) knlGS:0000000000000000
[ 57.124698][ T507] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 57.125086][ T507] CR2: 00007f0eb3362b30 CR3: 000000000bf1a002 CR4: 0000000000772ef0
[ 57.125570][ T507] PKRU: 55555554
[ 57.125802][ T507] Call Trace:
[ 57.126213][ T507]
[ 57.126384][ T507] netdev_run_todo+0x5f0/0xc60
[ 57.126700][ T507] ? dev_ingress_queue_create+0x190/0x190
[ 57.127007][ T507] ? generic_xdp_install+0x410/0x410
[ 57.127325][ T507] ? kernfs_put.part.0+0x12d/0x480
[ 57.127631][ T507] ? unregister_netdevice_many+0x20/0x20
[ 57.127937][ T507] ? br_dev_delete+0x115/0x1a0 [bridge]
[ 57.128304][ T507] rtnl_dellink+0x350/0xa30
[ 57.128611][ T507] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 57.129015][ T507] ? find_held_lock+0x2b/0x80
[ 57.129340][ T507] ? __lock_acquire+0x449/0x7e0
[ 57.129653][ T507] ? find_held_lock+0x2b/0x80
[ 57.130120][ T507] ? rtnetlink_rcv_msg+0x6e6/0xc00
[ 57.130448][ T507] ? __lock_release+0x5d/0x170
[ 57.130752][ T507] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 57.131102][ T507] rtnetlink_rcv_msg+0x709/0xc00
[ 57.131600][ T507] ? rtnl_port_fill+0x850/0x850
[ 57.131873][ T507] ? __lock_acquire+0x449/0x7e0
[ 57.132174][ T507] netlink_rcv_skb+0x121/0x340
[ 57.132491][ T507] ? rtnl_port_fill+0x850/0x850
[ 57.132976][ T507] ? netlink_ack+0xdd0/0xdd0
[ 57.133289][ T507] ? netlink_deliver_tap+0x13e/0x340
[ 57.133579][ T507] ? netlink_deliver_tap+0xc3/0x340
[ 57.133873][ T507] netlink_unicast+0x4aa/0x780
[ 57.134524][ T507] ? netlink_attachskb+0x810/0x810
[ 57.134807][ T507] ? __lock_acquire+0x449/0x7e0
[ 57.135100][ T507] netlink_sendmsg+0x714/0xbd0
[ 57.135409][ T507] ? netlink_unicast+0x780/0x780
[ 57.135878][ T507] ? __import_iovec+0x230/0x3b0
[ 57.136154][ T507] ? netlink_unicast+0x780/0x780
[ 57.136447][ T507] ____sys_sendmsg+0x3dd/0x890
[ 57.136924][ T507] ? get_timestamp.constprop.0+0x380/0x380
[ 57.137265][ T507] ? __copy_msghdr+0x3c0/0x3c0
[ 57.137575][ T507] ___sys_sendmsg+0xed/0x170
[ 57.137859][ T507] ? kasan_record_aux_stack+0x8c/0xa0
[ 57.138154][ T507] ? __call_rcu_common.constprop.0+0xa8/0x630
[ 57.138705][ T507] ? copy_msghdr_from_user+0x110/0x110
[ 57.139003][ T507] ? find_held_lock+0x2b/0x80
[ 57.139318][ T507] ? __lock_acquire+0x449/0x7e0
[ 57.139814][ T507] ? find_held_lock+0x2b/0x80
[ 57.140160][ T507] ? __virt_addr_valid+0x22a/0x450
[ 57.140460][ T507] ? __lock_release+0x5d/0x170
[ 57.140730][ T507] __sys_sendmsg+0x10b/0x1a0
[ 57.141132][ T507] ? __call_rcu_common.constprop.0+0x318/0x630
[ 57.141482][ T507] ? __sys_sendmsg_sock+0x20/0x20
[ 57.141753][ T507] ? rcu_is_watching+0x12/0xb0
[ 57.142013][ T507] do_syscall_64+0xc1/0xfd0
[ 57.142464][ T507] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 57.142805][ T507] RIP: 0033:0x7f0eb317d1d7
[ 57.143094][ T507] 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
[ 57.144265][ T507] RSP: 002b:00007fff1224e088 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 57.144685][ T507] RAX: ffffffffffffffda RBX: 00007fff1224e7b0 RCX: 00007f0eb317d1d7
[ 57.145244][ T507] RDX: 0000000000000000 RSI: 00007fff1224e0f0 RDI: 0000000000000005
[ 57.145675][ T507] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078
[ 57.146262][ T507] R10: 00007f0eb3079f60 R11: 0000000000000246 R12: 0000000000000002
[ 57.146694][ T507] R13: 00000000690df8f4 R14: 0000000000499600 R15: 0000000000000000
[ 57.147105][ T507]
[ 57.147516][ T507] irq event stamp: 39705
[ 57.147733][ T507] hardirqs last enabled at (39705): [] finish_task_switch.isra.0+0x245/0x960
[ 57.148265][ T507] hardirqs last disabled at (39704): [] __schedule+0x94a/0x1b10
[ 57.148933][ T507] softirqs last enabled at (39602): [] handle_softirqs+0x352/0x610
[ 57.149418][ T507] softirqs last disabled at (39597): [] irq_exit_rcu+0xab/0x100
[ 57.149900][ T507] ---[ end trace 0000000000000000 ]---