[ 14.937158][ T250] ip (250) used greatest stack depth: 23952 bytes left
[ 19.330040][ T299] br0: port 1(veth1) entered blocking state
[ 19.330792][ T299] br0: port 1(veth1) entered disabled state
[ 19.331582][ T299] veth1: entered allmulticast mode
[ 19.335933][ T299] veth1: entered promiscuous mode
[ 19.473752][ T301] br0: port 2(veth2) entered blocking state
[ 19.474423][ T301] br0: port 2(veth2) entered disabled state
[ 19.474862][ T301] veth2: entered allmulticast mode
[ 19.478249][ T301] veth2: entered promiscuous mode
[ 19.749376][ T46] br0: port 1(veth1) entered blocking state
[ 19.749883][ T46] br0: port 1(veth1) entered forwarding state
[ 19.858250][ T38] br0: port 2(veth2) entered blocking state
[ 19.858759][ T38] br0: port 2(veth2) entered forwarding state
[ 29.028959][ T349] veth0: entered promiscuous mode
[ 29.742177][ T355] GACT probability NOT on
[ 56.413382][ T383] veth0: left promiscuous mode
[ 56.897477][ T395] veth3: entered promiscuous mode
[ 59.063226][ T404] veth3: left promiscuous mode
[ 59.310190][ T406] veth3: entered promiscuous mode
[ 61.482668][ T415] veth3: left promiscuous mode
[ 61.739387][ T418] veth3: entered promiscuous mode
[ 63.961693][ T427] veth3: left promiscuous mode
[ 64.206669][ T429] veth3: entered promiscuous mode
[ 66.464876][ T438] veth3: left promiscuous mode
[ 72.366064][ T476] br0: port 2(veth2) entered disabled state
[ 72.481090][ T477] br0: port 1(veth1) entered disabled state
[ 72.616102][ T478] veth2: left allmulticast mode
[ 72.616502][ T478] veth2: left promiscuous mode
[ 72.617055][ T478] br0: port 2(veth2) entered disabled state
[ 72.619639][ T478] veth1: left allmulticast mode
[ 72.620184][ T478] veth1: left promiscuous mode
[ 72.620701][ T478] br0: port 1(veth1) entered disabled state
[ 72.666030][ T478] ==================================================================
[ 72.666352][ T478] BUG: KASAN: slab-use-after-free in kobject_put+0xbb/0xd0
[ 72.666619][ T478] Read of size 1 at addr ffff88800a48a6ac by task ip/478
[ 72.666821][ T478]
[ 72.666910][ T478] CPU: 2 UID: 0 PID: 478 Comm: ip Not tainted 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 72.666915][ T478] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 72.666917][ T478] Call Trace:
[ 72.666919][ T478]
[ 72.666921][ T478] dump_stack_lvl+0x82/0xc0
[ 72.666928][ T478] print_address_description.constprop.0+0x2c/0x3a0
[ 72.666936][ T478] ? kobject_put+0xbb/0xd0
[ 72.666940][ T478] print_report+0xb4/0x270
[ 72.666943][ T478] ? kobject_put+0xbb/0xd0
[ 72.666947][ T478] ? kasan_addr_to_slab+0x21/0x70
[ 72.666950][ T478] ? kobject_put+0xbb/0xd0
[ 72.666953][ T478] kasan_report+0xca/0x100
[ 72.666956][ T478] ? kobject_put+0xbb/0xd0
[ 72.666962][ T478] kobject_put+0xbb/0xd0
[ 72.666967][ T478] netdev_run_todo+0x5f0/0xc60
[ 72.666975][ T478] ? dev_ingress_queue_create+0x190/0x190
[ 72.666980][ T478] ? generic_xdp_install+0x410/0x410
[ 72.666983][ T478] ? kernfs_put.part.0+0x12d/0x480
[ 72.666993][ T478] ? unregister_netdevice_many+0x20/0x20
[ 72.666999][ T478] ? br_dev_delete+0x115/0x1a0 [bridge]
[ 72.667042][ T478] rtnl_dellink+0x350/0xa30
[ 72.667048][ T478] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 72.667067][ T478] ? find_held_lock+0x2b/0x80
[ 72.667074][ T478] ? __lock_acquire+0x449/0x7e0
[ 72.667080][ T478] ? find_held_lock+0x2b/0x80
[ 72.667084][ T478] ? rtnetlink_rcv_msg+0x6e6/0xc00
[ 72.667086][ T478] ? __lock_release+0x5d/0x170
[ 72.667091][ T478] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 72.667094][ T478] rtnetlink_rcv_msg+0x709/0xc00
[ 72.667098][ T478] ? rtnl_port_fill+0x850/0x850
[ 72.667100][ T478] ? __lock_acquire+0x449/0x7e0
[ 72.667107][ T478] netlink_rcv_skb+0x121/0x340
[ 72.667112][ T478] ? rtnl_port_fill+0x850/0x850
[ 72.667115][ T478] ? netlink_ack+0xdd0/0xdd0
[ 72.667122][ T478] ? netlink_deliver_tap+0x13e/0x340
[ 72.667124][ T478] ? netlink_deliver_tap+0xc3/0x340
[ 72.667128][ T478] netlink_unicast+0x4aa/0x780
[ 72.667132][ T478] ? netlink_attachskb+0x810/0x810
[ 72.667136][ T478] ? __lock_acquire+0x449/0x7e0
[ 72.667141][ T478] netlink_sendmsg+0x714/0xbd0
[ 72.667146][ T478] ? netlink_unicast+0x780/0x780
[ 72.667149][ T478] ? __import_iovec+0x230/0x3b0
[ 72.667154][ T478] ? netlink_unicast+0x780/0x780
[ 72.667158][ T478] ____sys_sendmsg+0x3dd/0x890
[ 72.667167][ T478] ? get_timestamp.constprop.0+0x380/0x380
[ 72.667171][ T478] ? __copy_msghdr+0x3c0/0x3c0
[ 72.667182][ T478] ___sys_sendmsg+0xed/0x170
[ 72.667185][ T478] ? kasan_record_aux_stack+0x8c/0xa0
[ 72.667188][ T478] ? __call_rcu_common.constprop.0+0xa8/0x630
[ 72.667194][ T478] ? copy_msghdr_from_user+0x110/0x110
[ 72.667199][ T478] ? find_held_lock+0x2b/0x80
[ 72.667204][ T478] ? __lock_acquire+0x449/0x7e0
[ 72.667209][ T478] ? find_held_lock+0x2b/0x80
[ 72.667213][ T478] ? __virt_addr_valid+0x22a/0x450
[ 72.667218][ T478] ? __lock_release+0x5d/0x170
[ 72.667224][ T478] __sys_sendmsg+0x10b/0x1a0
[ 72.667227][ T478] ? __call_rcu_common.constprop.0+0x318/0x630
[ 72.667231][ T478] ? __sys_sendmsg_sock+0x20/0x20
[ 72.667238][ T478] ? rcu_is_watching+0x12/0xb0
[ 72.667242][ T478] do_syscall_64+0xc1/0xfd0
[ 72.667247][ T478] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 72.667252][ T478] RIP: 0033:0x7fae5baa11d7
[ 72.667257][ T478] 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
[ 72.667260][ T478] RSP: 002b:00007fff132fb668 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 72.667263][ T478] RAX: ffffffffffffffda RBX: 00007fff132fbd90 RCX: 00007fae5baa11d7
[ 72.667266][ T478] RDX: 0000000000000000 RSI: 00007fff132fb6d0 RDI: 0000000000000005
[ 72.667267][ T478] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078
[ 72.667269][ T478] R10: 00007fae5b99df60 R11: 0000000000000246 R12: 0000000000000002
[ 72.667271][ T478] R13: 00000000690df7e7 R14: 0000000000499600 R15: 0000000000000000
[ 72.667277][ T478]
[ 72.667278][ T478]
[ 72.680151][ T478] Allocated by task 297:
[ 72.680288][ T478] kasan_save_stack+0x24/0x40
[ 72.680469][ T478] kasan_save_track+0x14/0x30
[ 72.680632][ T478] __kasan_kmalloc+0x7b/0x90
[ 72.680799][ T478] __kvmalloc_node_noprof+0x2e5/0x8e0
[ 72.680983][ T478] alloc_netdev_mqs+0x7d/0x1370
[ 72.681156][ T478] rtnl_create_link+0xa9e/0xe20
[ 72.681343][ T478] rtnl_newlink_create+0x203/0x770
[ 72.681514][ T478] __rtnl_newlink+0x231/0xa30
[ 72.681688][ T478] rtnl_newlink+0x693/0xa60
[ 72.681859][ T478] rtnetlink_rcv_msg+0x709/0xc00
[ 72.682034][ T478] netlink_rcv_skb+0x121/0x340
[ 72.682205][ T478] netlink_unicast+0x4aa/0x780
[ 72.682380][ T478] netlink_sendmsg+0x714/0xbd0
[ 72.682546][ T478] ____sys_sendmsg+0x3dd/0x890
[ 72.682719][ T478] ___sys_sendmsg+0xed/0x170
[ 72.682894][ T478] __sys_sendmsg+0x10b/0x1a0
[ 72.683069][ T478] do_syscall_64+0xc1/0xfd0
[ 72.683244][ T478] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 72.683460][ T478]
[ 72.683542][ T478] Freed by task 478:
[ 72.683671][ T478] kasan_save_stack+0x24/0x40
[ 72.683846][ T478] kasan_save_track+0x14/0x30
[ 72.684031][ T478] __kasan_save_free_info+0x3b/0x60
[ 72.684206][ T478] __kasan_slab_free+0x3f/0x60
[ 72.684381][ T478] kfree+0x21d/0x540
[ 72.684506][ T478] device_release+0x9c/0x210
[ 72.684679][ T478] kobject_cleanup+0xfe/0x360
[ 72.684854][ T478] netdev_run_todo+0x81f/0xc60
[ 72.685076][ T478] rtnl_dellink+0x350/0xa30
[ 72.685251][ T478] rtnetlink_rcv_msg+0x709/0xc00
[ 72.685426][ T478] netlink_rcv_skb+0x121/0x340
[ 72.685589][ T478] netlink_unicast+0x4aa/0x780
[ 72.685750][ T478] netlink_sendmsg+0x714/0xbd0
[ 72.685923][ T478] ____sys_sendmsg+0x3dd/0x890
[ 72.686098][ T478] ___sys_sendmsg+0xed/0x170
[ 72.686267][ T478] __sys_sendmsg+0x10b/0x1a0
[ 72.686450][ T478] do_syscall_64+0xc1/0xfd0
[ 72.686617][ T478] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 72.686822][ T478]
[ 72.686911][ T478] Last potentially related work creation:
[ 72.687085][ T478] kasan_save_stack+0x24/0x40
[ 72.687287][ T478] kasan_record_aux_stack+0x8c/0xa0
[ 72.687469][ T478] insert_work+0x34/0x230
[ 72.687605][ T478] __queue_work+0x5fd/0xab0
[ 72.687772][ T478] queue_work_on+0x84/0x90
[ 72.687947][ T478] fdb_delete+0x7bf/0xd50 [bridge]
[ 72.688181][ T478] br_fdb_delete_by_port+0x1ce/0x260 [bridge]
[ 72.688428][ T478] del_nbp+0x374/0xbe0 [bridge]
[ 72.688621][ T478] br_dev_delete+0x91/0x1a0 [bridge]
[ 72.688818][ T478] rtnl_dellink+0x334/0xa30
[ 72.689017][ T478] rtnetlink_rcv_msg+0x709/0xc00
[ 72.689202][ T478] netlink_rcv_skb+0x121/0x340
[ 72.689381][ T478] netlink_unicast+0x4aa/0x780
[ 72.689557][ T478] netlink_sendmsg+0x714/0xbd0
[ 72.689723][ T478] ____sys_sendmsg+0x3dd/0x890
[ 72.689898][ T478] ___sys_sendmsg+0xed/0x170
[ 72.690078][ T478] __sys_sendmsg+0x10b/0x1a0
[ 72.690258][ T478] do_syscall_64+0xc1/0xfd0
[ 72.690432][ T478] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 72.690639][ T478]
[ 72.690723][ T478] Second to last potentially related work creation:
[ 72.690952][ T478] kasan_save_stack+0x24/0x40
[ 72.691133][ T478] kasan_record_aux_stack+0x8c/0xa0
[ 72.691306][ T478] insert_work+0x34/0x230
[ 72.691440][ T478] __queue_work+0x5fd/0xab0
[ 72.691605][ T478] call_timer_fn+0x13a/0x220
[ 72.691775][ T478] __run_timers+0x3f9/0x810
[ 72.691948][ T478] run_timer_softirq+0xa3/0xf0
[ 72.692142][ T478] handle_softirqs+0x215/0x610
[ 72.692320][ T478] irq_exit_rcu+0xab/0x100
[ 72.692493][ T478] sysvec_apic_timer_interrupt+0xa8/0xc0
[ 72.692661][ T478] asm_sysvec_apic_timer_interrupt+0x1a/0x20
[ 72.692868][ T478]
[ 72.692954][ T478] The buggy address belongs to the object at ffff88800a48a000
[ 72.692954][ T478] which belongs to the cache kmalloc-8k of size 8192
[ 72.693386][ T478] The buggy address is located 1708 bytes inside of
[ 72.693386][ T478] freed 8192-byte region [ffff88800a48a000, ffff88800a48c000)
[ 72.693907][ T478]
[ 72.694005][ T478] The buggy address belongs to the physical page:
[ 72.694235][ T478] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xa488
[ 72.694540][ T478] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[ 72.694797][ T478] flags: 0x80000000000040(head|node=0|zone=1)
[ 72.695031][ T478] page_type: f5(slab)
[ 72.695159][ T478] raw: 0080000000000040 ffff8880010438c0 ffffea000023fe10 ffff888001041228
[ 72.695473][ T478] raw: 0000000000000000 0000000000010001 00000000f5000000 0000000000000000
[ 72.695766][ T478] head: 0080000000000040 ffff8880010438c0 ffffea000023fe10 ffff888001041228
[ 72.696188][ T478] head: 0000000000000000 0000000000010001 00000000f5000000 0000000000000000
[ 72.696495][ T478] head: 0080000000000003 ffffea0000292201 00000000ffffffff 00000000ffffffff
[ 72.696785][ T478] head: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
[ 72.697122][ T478] page dumped because: kasan: bad access detected
[ 72.697366][ T478]
[ 72.697457][ T478] Memory state around the buggy address:
[ 72.697618][ T478] ffff88800a48a580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 72.697958][ T478] ffff88800a48a600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 72.698219][ T478] >ffff88800a48a680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 72.698465][ T478] ^
[ 72.698724][ T478] ffff88800a48a700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 72.698972][ T478] ffff88800a48a780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 72.699219][ T478] ==================================================================
[ 72.699566][ T478] Disabling lock debugging due to kernel taint
[ 72.699797][ T478] ------------[ cut here ]------------
[ 72.700014][ T478] refcount_t: underflow; use-after-free.
[ 72.700226][ T478] WARNING: CPU: 2 PID: 478 at lib/refcount.c:28 refcount_warn_saturate+0x16f/0x1b0
[ 72.700547][ T478] Modules linked in: act_gact cls_flower sch_ingress bridge stp llc vrf veth
[ 72.700968][ T478] CPU: 2 UID: 0 PID: 478 Comm: ip Tainted: G B 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 72.701789][ T478] Tainted: [B]=BAD_PAGE
[ 72.701943][ T478] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 72.702190][ T478] RIP: 0010:refcount_warn_saturate+0x16f/0x1b0
[ 72.702451][ T478] 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 ae 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
[ 72.703114][ T478] RSP: 0018:ffffc90000ce71f0 EFLAGS: 00010286
[ 72.703464][ T478] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[ 72.703827][ T478] RDX: 0000000000000002 RSI: 0000000000000004 RDI: 0000000000000001
[ 72.704116][ T478] RBP: 0000000000000003 R08: 0000000000000000 R09: fffffbfff5d3e134
[ 72.704414][ T478] R10: 0000000000000003 R11: ffffc90000ce6d80 R12: 0000000000000001
[ 72.704685][ T478] R13: dffffc0000000000 R14: dead000000000122 R15: dead000000000100
[ 72.704959][ T478] FS: 00007fae5b8d3800(0000) GS:ffff8880864f2000(0000) knlGS:0000000000000000
[ 72.705408][ T478] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 72.705738][ T478] CR2: 00000000004e68c8 CR3: 0000000008968004 CR4: 0000000000772ef0
[ 72.706032][ T478] PKRU: 55555554
[ 72.706181][ T478] Call Trace:
[ 72.706329][ T478]
[ 72.706453][ T478] netdev_run_todo+0x5f0/0xc60
[ 72.706738][ T478] ? dev_ingress_queue_create+0x190/0x190
[ 72.706936][ T478] ? generic_xdp_install+0x410/0x410
[ 72.707137][ T478] ? kernfs_put.part.0+0x12d/0x480
[ 72.707335][ T478] ? unregister_netdevice_many+0x20/0x20
[ 72.707624][ T478] ? br_dev_delete+0x115/0x1a0 [bridge]
[ 72.707855][ T478] rtnl_dellink+0x350/0xa30
[ 72.708064][ T478] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 72.708414][ T478] ? find_held_lock+0x2b/0x80
[ 72.708602][ T478] ? __lock_acquire+0x449/0x7e0
[ 72.708790][ T478] ? find_held_lock+0x2b/0x80
[ 72.709000][ T478] ? rtnetlink_rcv_msg+0x6e6/0xc00
[ 72.709288][ T478] ? __lock_release+0x5d/0x170
[ 72.709484][ T478] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 72.709707][ T478] rtnetlink_rcv_msg+0x709/0xc00
[ 72.709899][ T478] ? rtnl_port_fill+0x850/0x850
[ 72.710104][ T478] ? __lock_acquire+0x449/0x7e0
[ 72.710301][ T478] netlink_rcv_skb+0x121/0x340
[ 72.710496][ T478] ? rtnl_port_fill+0x850/0x850
[ 72.710681][ T478] ? netlink_ack+0xdd0/0xdd0
[ 72.710973][ T478] ? netlink_deliver_tap+0x13e/0x340
[ 72.711172][ T478] ? netlink_deliver_tap+0xc3/0x340
[ 72.711371][ T478] netlink_unicast+0x4aa/0x780
[ 72.711556][ T478] ? netlink_attachskb+0x810/0x810
[ 72.711741][ T478] ? __lock_acquire+0x449/0x7e0
[ 72.711939][ T478] netlink_sendmsg+0x714/0xbd0
[ 72.712141][ T478] ? netlink_unicast+0x780/0x780
[ 72.712332][ T478] ? __import_iovec+0x230/0x3b0
[ 72.712619][ T478] ? netlink_unicast+0x780/0x780
[ 72.712809][ T478] ____sys_sendmsg+0x3dd/0x890
[ 72.713016][ T478] ? get_timestamp.constprop.0+0x380/0x380
[ 72.713246][ T478] ? __copy_msghdr+0x3c0/0x3c0
[ 72.713538][ T478] ___sys_sendmsg+0xed/0x170
[ 72.713731][ T478] ? kasan_record_aux_stack+0x8c/0xa0
[ 72.713924][ T478] ? __call_rcu_common.constprop.0+0xa8/0x630
[ 72.714295][ T478] ? copy_msghdr_from_user+0x110/0x110
[ 72.714488][ T478] ? find_held_lock+0x2b/0x80
[ 72.714672][ T478] ? __lock_acquire+0x449/0x7e0
[ 72.714856][ T478] ? find_held_lock+0x2b/0x80
[ 72.715154][ T478] ? __virt_addr_valid+0x22a/0x450
[ 72.715365][ T478] ? __lock_release+0x5d/0x170
[ 72.715550][ T478] __sys_sendmsg+0x10b/0x1a0
[ 72.715734][ T478] ? __call_rcu_common.constprop.0+0x318/0x630
[ 72.716070][ T478] ? __sys_sendmsg_sock+0x20/0x20
[ 72.716268][ T478] ? rcu_is_watching+0x12/0xb0
[ 72.716474][ T478] do_syscall_64+0xc1/0xfd0
[ 72.716663][ T478] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 72.716983][ T478] RIP: 0033:0x7fae5baa11d7
[ 72.717205][ T478] 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
[ 72.718024][ T478] RSP: 002b:00007fff132fb668 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 72.718306][ T478] RAX: ffffffffffffffda RBX: 00007fff132fbd90 RCX: 00007fae5baa11d7
[ 72.718592][ T478] RDX: 0000000000000000 RSI: 00007fff132fb6d0 RDI: 0000000000000005
[ 72.718855][ T478] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078
[ 72.719147][ T478] R10: 00007fae5b99df60 R11: 0000000000000246 R12: 0000000000000002
[ 72.719539][ T478] R13: 00000000690df7e7 R14: 0000000000499600 R15: 0000000000000000
[ 72.719816][ T478]
[ 72.719968][ T478] irq event stamp: 45063
[ 72.720133][ T478] hardirqs last enabled at (45063): [] __schedule+0x13c7/0x1b10
[ 72.720461][ T478] hardirqs last disabled at (45062): [] __schedule+0x94a/0x1b10
[ 72.720760][ T478] softirqs last enabled at (44826): [] handle_softirqs+0x352/0x610
[ 72.721089][ T478] softirqs last disabled at (44819): [] irq_exit_rcu+0xab/0x100
[ 72.721406][ T478] ---[ end trace 0000000000000000 ]---