[ 15.499247][ T252] ip (252) used greatest stack depth: 24384 bytes left
[ 18.308460][ T290] 8021q: 802.1Q VLAN Support v1.8
[ 20.795100][ T311] br0: port 1(veth1) entered blocking state
[ 20.796132][ T311] br0: port 1(veth1) entered disabled state
[ 20.796703][ T311] veth1: entered allmulticast mode
[ 20.800852][ T311] veth1: entered promiscuous mode
[ 20.927939][ T313] br0: port 2(veth2) entered blocking state
[ 20.928421][ T313] br0: port 2(veth2) entered disabled state
[ 20.929009][ T313] veth2: entered allmulticast mode
[ 20.932961][ T313] veth2: entered promiscuous mode
[ 21.318109][ T37] br0: port 1(veth1) entered blocking state
[ 21.318744][ T37] br0: port 1(veth1) entered forwarding state
[ 21.419423][ T72] br0: port 2(veth2) entered blocking state
[ 21.419866][ T72] br0: port 2(veth2) entered forwarding state
[ 82.303772][ T583] Mirror/redirect action on
[ 90.713835][ T619] br0: port 2(veth2) entered disabled state
[ 90.848364][ T620] br0: port 1(veth1) entered disabled state
[ 90.969767][ T621] veth2: left allmulticast mode
[ 90.970144][ T621] veth2: left promiscuous mode
[ 90.970820][ T621] br0: port 2(veth2) entered disabled state
[ 90.973365][ T621] veth1: left allmulticast mode
[ 90.973720][ T621] veth1: left promiscuous mode
[ 90.974201][ T621] br0: port 1(veth1) entered disabled state
[ 91.017796][ T621] ==================================================================
[ 91.018149][ T621] BUG: KASAN: slab-use-after-free in kobject_put+0xbb/0xd0
[ 91.018451][ T621] Read of size 1 at addr ffff88800b95a6ac by task ip/621
[ 91.018695][ T621]
[ 91.018810][ T621] CPU: 1 UID: 0 PID: 621 Comm: ip Not tainted 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 91.018817][ T621] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 91.018819][ T621] Call Trace:
[ 91.018822][ T621]
[ 91.018824][ T621] dump_stack_lvl+0x82/0xc0
[ 91.018831][ T621] print_address_description.constprop.0+0x2c/0x3a0
[ 91.018838][ T621] ? kobject_put+0xbb/0xd0
[ 91.018842][ T621] print_report+0xb4/0x270
[ 91.018845][ T621] ? kobject_put+0xbb/0xd0
[ 91.018849][ T621] ? kasan_addr_to_slab+0x21/0x70
[ 91.018852][ T621] ? kobject_put+0xbb/0xd0
[ 91.018855][ T621] kasan_report+0xca/0x100
[ 91.018859][ T621] ? kobject_put+0xbb/0xd0
[ 91.018864][ T621] kobject_put+0xbb/0xd0
[ 91.018868][ T621] netdev_run_todo+0x5f0/0xc60
[ 91.018873][ T621] ? dev_ingress_queue_create+0x190/0x190
[ 91.018876][ T621] ? generic_xdp_install+0x410/0x410
[ 91.018879][ T621] ? kernfs_put.part.0+0x12d/0x480
[ 91.018885][ T621] ? unregister_netdevice_many+0x20/0x20
[ 91.018892][ T621] ? br_dev_delete+0x115/0x1a0 [bridge]
[ 91.018928][ T621] rtnl_dellink+0x350/0xa30
[ 91.018934][ T621] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 91.018953][ T621] ? find_held_lock+0x2b/0x80
[ 91.018961][ T621] ? __lock_acquire+0x449/0x7e0
[ 91.018968][ T621] ? find_held_lock+0x2b/0x80
[ 91.018972][ T621] ? rtnetlink_rcv_msg+0x6e6/0xc00
[ 91.018975][ T621] ? __lock_release+0x5d/0x170
[ 91.018980][ T621] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 91.018983][ T621] rtnetlink_rcv_msg+0x709/0xc00
[ 91.018986][ T621] ? rtnl_port_fill+0x850/0x850
[ 91.018989][ T621] ? __lock_acquire+0x449/0x7e0
[ 91.018996][ T621] netlink_rcv_skb+0x121/0x340
[ 91.019001][ T621] ? rtnl_port_fill+0x850/0x850
[ 91.019005][ T621] ? netlink_ack+0xdd0/0xdd0
[ 91.019011][ T621] ? netlink_deliver_tap+0x13e/0x340
[ 91.019014][ T621] ? netlink_deliver_tap+0xc3/0x340
[ 91.019017][ T621] netlink_unicast+0x4aa/0x780
[ 91.019022][ T621] ? netlink_attachskb+0x810/0x810
[ 91.019025][ T621] ? __lock_acquire+0x449/0x7e0
[ 91.019031][ T621] netlink_sendmsg+0x714/0xbd0
[ 91.019035][ T621] ? netlink_unicast+0x780/0x780
[ 91.019038][ T621] ? __import_iovec+0x230/0x3b0
[ 91.019044][ T621] ? netlink_unicast+0x780/0x780
[ 91.019048][ T621] ____sys_sendmsg+0x3dd/0x890
[ 91.019053][ T621] ? get_timestamp.constprop.0+0x380/0x380
[ 91.019056][ T621] ? __copy_msghdr+0x3c0/0x3c0
[ 91.019063][ T621] ___sys_sendmsg+0xed/0x170
[ 91.019066][ T621] ? kasan_record_aux_stack+0x8c/0xa0
[ 91.019069][ T621] ? __call_rcu_common.constprop.0+0xa8/0x630
[ 91.019075][ T621] ? copy_msghdr_from_user+0x110/0x110
[ 91.019080][ T621] ? find_held_lock+0x2b/0x80
[ 91.019084][ T621] ? __lock_acquire+0x449/0x7e0
[ 91.019090][ T621] ? find_held_lock+0x2b/0x80
[ 91.019093][ T621] ? __virt_addr_valid+0x22a/0x450
[ 91.019098][ T621] ? __lock_release+0x5d/0x170
[ 91.019105][ T621] __sys_sendmsg+0x10b/0x1a0
[ 91.019108][ T621] ? __call_rcu_common.constprop.0+0x318/0x630
[ 91.019111][ T621] ? __sys_sendmsg_sock+0x20/0x20
[ 91.019119][ T621] ? rcu_is_watching+0x12/0xb0
[ 91.019123][ T621] do_syscall_64+0xc1/0xfd0
[ 91.019128][ T621] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 91.019133][ T621] RIP: 0033:0x7f50ede101d7
[ 91.019140][ T621] 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
[ 91.019145][ T621] RSP: 002b:00007ffcb4b5fbc8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 91.019151][ T621] RAX: ffffffffffffffda RBX: 00007ffcb4b602f0 RCX: 00007f50ede101d7
[ 91.019155][ T621] RDX: 0000000000000000 RSI: 00007ffcb4b5fc30 RDI: 0000000000000005
[ 91.019157][ T621] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078
[ 91.019159][ T621] R10: 00007f50edd0cf60 R11: 0000000000000246 R12: 0000000000000002
[ 91.019162][ T621] R13: 00000000690df68d R14: 0000000000499600 R15: 0000000000000000
[ 91.019174][ T621]
[ 91.019175][ T621]
[ 91.034476][ T621] Allocated by task 309:
[ 91.034651][ T621] kasan_save_stack+0x24/0x40
[ 91.034861][ T621] kasan_save_track+0x14/0x30
[ 91.035154][ T621] __kasan_kmalloc+0x7b/0x90
[ 91.035342][ T621] __kvmalloc_node_noprof+0x2e5/0x8e0
[ 91.035535][ T621] alloc_netdev_mqs+0x7d/0x1370
[ 91.035760][ T621] rtnl_create_link+0xa9e/0xe20
[ 91.036051][ T621] rtnl_newlink_create+0x203/0x770
[ 91.036249][ T621] __rtnl_newlink+0x231/0xa30
[ 91.036437][ T621] rtnl_newlink+0x693/0xa60
[ 91.036636][ T621] rtnetlink_rcv_msg+0x709/0xc00
[ 91.036937][ T621] netlink_rcv_skb+0x121/0x340
[ 91.037127][ T621] netlink_unicast+0x4aa/0x780
[ 91.037314][ T621] netlink_sendmsg+0x714/0xbd0
[ 91.037504][ T621] ____sys_sendmsg+0x3dd/0x890
[ 91.037816][ T621] ___sys_sendmsg+0xed/0x170
[ 91.038006][ T621] __sys_sendmsg+0x10b/0x1a0
[ 91.038200][ T621] do_syscall_64+0xc1/0xfd0
[ 91.038396][ T621] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 91.038632][ T621]
[ 91.038749][ T621] Freed by task 621:
[ 91.038890][ T621] kasan_save_stack+0x24/0x40
[ 91.039082][ T621] kasan_save_track+0x14/0x30
[ 91.039365][ T621] __kasan_save_free_info+0x3b/0x60
[ 91.039554][ T621] __kasan_slab_free+0x3f/0x60
[ 91.039773][ T621] kfree+0x21d/0x540
[ 91.039917][ T621] device_release+0x9c/0x210
[ 91.040210][ T621] kobject_cleanup+0xfe/0x360
[ 91.040401][ T621] netdev_run_todo+0x81f/0xc60
[ 91.040592][ T621] rtnl_dellink+0x350/0xa30
[ 91.040793][ T621] rtnetlink_rcv_msg+0x709/0xc00
[ 91.041080][ T621] netlink_rcv_skb+0x121/0x340
[ 91.041268][ T621] netlink_unicast+0x4aa/0x780
[ 91.041462][ T621] netlink_sendmsg+0x714/0xbd0
[ 91.041650][ T621] ____sys_sendmsg+0x3dd/0x890
[ 91.041942][ T621] ___sys_sendmsg+0xed/0x170
[ 91.042130][ T621] __sys_sendmsg+0x10b/0x1a0
[ 91.042323][ T621] do_syscall_64+0xc1/0xfd0
[ 91.042513][ T621] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 91.042861][ T621]
[ 91.042959][ T621] Last potentially related work creation:
[ 91.043167][ T621] kasan_save_stack+0x24/0x40
[ 91.043360][ T621] kasan_record_aux_stack+0x8c/0xa0
[ 91.043553][ T621] insert_work+0x34/0x230
[ 91.043808][ T621] __queue_work+0x5fd/0xab0
[ 91.044004][ T621] queue_work_on+0x84/0x90
[ 91.044194][ T621] br_multicast_dev_del+0xeb/0x240 [bridge]
[ 91.044464][ T621] br_dev_uninit+0x19/0x40 [bridge]
[ 91.044790][ T621] unregister_netdevice_many_notify+0xa80/0x1b30
[ 91.045039][ T621] rtnl_dellink+0x344/0xa30
[ 91.045230][ T621] rtnetlink_rcv_msg+0x709/0xc00
[ 91.045420][ T621] netlink_rcv_skb+0x121/0x340
[ 91.045608][ T621] netlink_unicast+0x4aa/0x780
[ 91.045813][ T621] netlink_sendmsg+0x714/0xbd0
[ 91.046017][ T621] ____sys_sendmsg+0x3dd/0x890
[ 91.046309][ T621] ___sys_sendmsg+0xed/0x170
[ 91.046506][ T621] __sys_sendmsg+0x10b/0x1a0
[ 91.046696][ T621] do_syscall_64+0xc1/0xfd0
[ 91.046904][ T621] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 91.047242][ T621]
[ 91.047344][ T621] Second to last potentially related work creation:
[ 91.047575][ T621] kasan_save_stack+0x24/0x40
[ 91.047770][ T621] kasan_record_aux_stack+0x8c/0xa0
[ 91.048077][ T621] insert_work+0x34/0x230
[ 91.048235][ T621] __queue_work+0x5fd/0xab0
[ 91.048426][ T621] queue_work_on+0x84/0x90
[ 91.048622][ T621] br_multicast_del_mdb_entry+0x95d/0xfe0 [bridge]
[ 91.049000][ T621] br_multicast_dev_del+0xeb/0x240 [bridge]
[ 91.049266][ T621] br_dev_uninit+0x19/0x40 [bridge]
[ 91.049479][ T621] unregister_netdevice_many_notify+0xa80/0x1b30
[ 91.049737][ T621] rtnl_dellink+0x344/0xa30
[ 91.050044][ T621] rtnetlink_rcv_msg+0x709/0xc00
[ 91.050236][ T621] netlink_rcv_skb+0x121/0x340
[ 91.050424][ T621] netlink_unicast+0x4aa/0x780
[ 91.050610][ T621] netlink_sendmsg+0x714/0xbd0
[ 91.050897][ T621] ____sys_sendmsg+0x3dd/0x890
[ 91.051101][ T621] ___sys_sendmsg+0xed/0x170
[ 91.051290][ T621] __sys_sendmsg+0x10b/0x1a0
[ 91.051481][ T621] do_syscall_64+0xc1/0xfd0
[ 91.051781][ T621] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 91.052027][ T621]
[ 91.052126][ T621] The buggy address belongs to the object at ffff88800b95a000
[ 91.052126][ T621] which belongs to the cache kmalloc-8k of size 8192
[ 91.052675][ T621] The buggy address is located 1708 bytes inside of
[ 91.052675][ T621] freed 8192-byte region [ffff88800b95a000, ffff88800b95c000)
[ 91.053144][ T621]
[ 91.053239][ T621] The buggy address belongs to the physical page:
[ 91.053567][ T621] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xb958
[ 91.053899][ T621] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[ 91.054294][ T621] flags: 0x80000000000040(head|node=0|zone=1)
[ 91.054545][ T621] page_type: f5(slab)
[ 91.054690][ T621] raw: 0080000000000040 ffff8880010438c0 ffffea00002c7610 ffffea0000278a10
[ 91.055140][ T621] raw: 0000000000000000 0000000000010001 00000000f5000000 0000000000000000
[ 91.055470][ T621] head: 0080000000000040 ffff8880010438c0 ffffea00002c7610 ffffea0000278a10
[ 91.055821][ T621] head: 0000000000000000 0000000000010001 00000000f5000000 0000000000000000
[ 91.056276][ T621] head: 0080000000000003 ffffea00002e5601 00000000ffffffff 00000000ffffffff
[ 91.056607][ T621] head: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
[ 91.057036][ T621] page dumped because: kasan: bad access detected
[ 91.057286][ T621]
[ 91.057384][ T621] Memory state around the buggy address:
[ 91.057566][ T621] ffff88800b95a580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 91.057941][ T621] ffff88800b95a600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 91.058219][ T621] >ffff88800b95a680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 91.058589][ T621] ^
[ 91.058772][ T621] ffff88800b95a700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 91.059058][ T621] ffff88800b95a780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 91.059431][ T621] ==================================================================
[ 91.059794][ T621] Disabling lock debugging due to kernel taint
[ 91.060036][ T621] ------------[ cut here ]------------
[ 91.060219][ T621] refcount_t: underflow; use-after-free.
[ 91.060647][ T621] WARNING: CPU: 1 PID: 621 at lib/refcount.c:28 refcount_warn_saturate+0x16f/0x1b0
[ 91.061131][ T621] Modules linked in: act_mirred cls_flower sch_ingress bridge stp llc 8021q vrf veth
[ 91.061528][ T621] CPU: 1 UID: 0 PID: 621 Comm: ip Tainted: G B 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 91.061917][ T621] Tainted: [B]=BAD_PAGE
[ 91.062171][ T621] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 91.062507][ T621] RIP: 0010:refcount_warn_saturate+0x16f/0x1b0
[ 91.062767][ T621] 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 96 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
[ 91.063454][ T621] RSP: 0018:ffffc900006271f0 EFLAGS: 00010286
[ 91.063709][ T621] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[ 91.063995][ T621] RDX: 0000000000000002 RSI: 0000000000000004 RDI: 0000000000000001
[ 91.064281][ T621] RBP: 0000000000000003 R08: 0000000000000000 R09: fffffbfff2d3e134
[ 91.064587][ T621] R10: 0000000000000003 R11: ffffc90000626d80 R12: 0000000000000001
[ 91.064877][ T621] R13: dffffc0000000000 R14: dead000000000122 R15: dead000000000100
[ 91.065156][ T621] FS: 00007f50edc42800(0000) GS:ffff88809e472000(0000) knlGS:0000000000000000
[ 91.065518][ T621] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 91.065777][ T621] CR2: 00005629f727cdec CR3: 0000000001da1002 CR4: 0000000000772ef0
[ 91.066073][ T621] PKRU: 55555554
[ 91.066214][ T621] Call Trace:
[ 91.066366][ T621]
[ 91.066476][ T621] netdev_run_todo+0x5f0/0xc60
[ 91.066790][ T621] ? dev_ingress_queue_create+0x190/0x190
[ 91.066984][ T621] ? generic_xdp_install+0x410/0x410
[ 91.067168][ T621] ? kernfs_put.part.0+0x12d/0x480
[ 91.067362][ T621] ? unregister_netdevice_many+0x20/0x20
[ 91.067677][ T621] ? br_dev_delete+0x115/0x1a0 [bridge]
[ 91.067906][ T621] rtnl_dellink+0x350/0xa30
[ 91.068094][ T621] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 91.068334][ T621] ? find_held_lock+0x2b/0x80
[ 91.068653][ T621] ? __lock_acquire+0x449/0x7e0
[ 91.068859][ T621] ? find_held_lock+0x2b/0x80
[ 91.069049][ T621] ? rtnetlink_rcv_msg+0x6e6/0xc00
[ 91.069236][ T621] ? __lock_release+0x5d/0x170
[ 91.069557][ T621] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 91.069801][ T621] rtnetlink_rcv_msg+0x709/0xc00
[ 91.069985][ T621] ? rtnl_port_fill+0x850/0x850
[ 91.070170][ T621] ? __lock_acquire+0x449/0x7e0
[ 91.070472][ T621] netlink_rcv_skb+0x121/0x340
[ 91.070674][ T621] ? rtnl_port_fill+0x850/0x850
[ 91.070866][ T621] ? netlink_ack+0xdd0/0xdd0
[ 91.071070][ T621] ? netlink_deliver_tap+0x13e/0x340
[ 91.071341][ T621] ? netlink_deliver_tap+0xc3/0x340
[ 91.071553][ T621] netlink_unicast+0x4aa/0x780
[ 91.071749][ T621] ? netlink_attachskb+0x810/0x810
[ 91.071938][ T621] ? __lock_acquire+0x449/0x7e0
[ 91.072220][ T621] netlink_sendmsg+0x714/0xbd0
[ 91.072412][ T621] ? netlink_unicast+0x780/0x780
[ 91.072621][ T621] ? __import_iovec+0x230/0x3b0
[ 91.072814][ T621] ? netlink_unicast+0x780/0x780
[ 91.073094][ T621] ____sys_sendmsg+0x3dd/0x890
[ 91.073279][ T621] ? get_timestamp.constprop.0+0x380/0x380
[ 91.073531][ T621] ? __copy_msghdr+0x3c0/0x3c0
[ 91.073729][ T621] ___sys_sendmsg+0xed/0x170
[ 91.074012][ T621] ? kasan_record_aux_stack+0x8c/0xa0
[ 91.074197][ T621] ? __call_rcu_common.constprop.0+0xa8/0x630
[ 91.074449][ T621] ? copy_msghdr_from_user+0x110/0x110
[ 91.074748][ T621] ? find_held_lock+0x2b/0x80
[ 91.074939][ T621] ? __lock_acquire+0x449/0x7e0
[ 91.075121][ T621] ? find_held_lock+0x2b/0x80
[ 91.075307][ T621] ? __virt_addr_valid+0x22a/0x450
[ 91.075615][ T621] ? __lock_release+0x5d/0x170
[ 91.075831][ T621] __sys_sendmsg+0x10b/0x1a0
[ 91.076027][ T621] ? __call_rcu_common.constprop.0+0x318/0x630
[ 91.076257][ T621] ? __sys_sendmsg_sock+0x20/0x20
[ 91.076452][ T621] ? rcu_is_watching+0x12/0xb0
[ 91.076648][ T621] do_syscall_64+0xc1/0xfd0
[ 91.076849][ T621] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 91.077074][ T621] RIP: 0033:0x7f50ede101d7
[ 91.077364][ T621] 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
[ 91.078176][ T621] RSP: 002b:00007ffcb4b5fbc8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 91.078473][ T621] RAX: ffffffffffffffda RBX: 00007ffcb4b602f0 RCX: 00007f50ede101d7
[ 91.078802][ T621] RDX: 0000000000000000 RSI: 00007ffcb4b5fc30 RDI: 0000000000000005
[ 91.079190][ T621] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078
[ 91.079473][ T621] R10: 00007f50edd0cf60 R11: 0000000000000246 R12: 0000000000000002
[ 91.079780][ T621] R13: 00000000690df68d R14: 0000000000499600 R15: 0000000000000000
[ 91.080150][ T621]
[ 91.080295][ T621] irq event stamp: 50139
[ 91.080450][ T621] hardirqs last enabled at (50139): [] irqentry_exit+0x3b/0x80
[ 91.080900][ T621] hardirqs last disabled at (50138): [] handle_softirqs+0x47f/0x610
[ 91.081221][ T621] softirqs last enabled at (49904): [] handle_softirqs+0x352/0x610
[ 91.081652][ T621] softirqs last disabled at (48993): [] irq_exit_rcu+0xab/0x100
[ 91.081983][ T621] ---[ end trace 0000000000000000 ]---
[ 91.090734][ T621] ip (621) used greatest stack depth: 24232 bytes left