[ 17.614024][ T278] ==================================================================
[ 17.614334][ T278] BUG: KASAN: slab-use-after-free in kobject_put+0xbb/0xd0
[ 17.614650][ T278] Read of size 1 at addr ffff8880052ca6c4 by task ip/278
[ 17.614876][ T278]
[ 17.614971][ T278] CPU: 2 UID: 0 PID: 278 Comm: ip Not tainted 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 17.614976][ T278] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 17.614978][ T278] Call Trace:
[ 17.614980][ T278]
[ 17.614982][ T278] dump_stack_lvl+0x82/0xc0
[ 17.614988][ T278] print_address_description.constprop.0+0x2c/0x3a0
[ 17.614995][ T278] ? kobject_put+0xbb/0xd0
[ 17.614999][ T278] print_report+0xb4/0x270
[ 17.615002][ T278] ? kobject_put+0xbb/0xd0
[ 17.615005][ T278] ? kasan_addr_to_slab+0x21/0x70
[ 17.615008][ T278] ? kobject_put+0xbb/0xd0
[ 17.615011][ T278] kasan_report+0xca/0x100
[ 17.615015][ T278] ? kobject_put+0xbb/0xd0
[ 17.615021][ T278] kobject_put+0xbb/0xd0
[ 17.615024][ T278] netdev_run_todo+0x5f0/0xc60
[ 17.615030][ T278] ? dev_ingress_queue_create+0x190/0x190
[ 17.615034][ T278] ? generic_xdp_install+0x410/0x410
[ 17.615038][ T278] ? __lock_acquire+0x449/0x7e0
[ 17.615044][ T278] rtnl_dellink+0x350/0xa30
[ 17.615049][ T278] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 17.615068][ T278] ? find_held_lock+0x2b/0x80
[ 17.615075][ T278] ? __lock_acquire+0x449/0x7e0
[ 17.615079][ T278] ? find_held_lock+0x2b/0x80
[ 17.615084][ T278] ? rtnetlink_rcv_msg+0x6e6/0xc00
[ 17.615087][ T278] ? __lock_release+0x5d/0x170
[ 17.615090][ T278] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 17.615094][ T278] rtnetlink_rcv_msg+0x709/0xc00
[ 17.615098][ T278] ? rtnl_port_fill+0x890/0x890
[ 17.615102][ T278] ? __lock_acquire+0x449/0x7e0
[ 17.615108][ T278] netlink_rcv_skb+0x121/0x340
[ 17.615113][ T278] ? rtnl_port_fill+0x890/0x890
[ 17.615117][ T278] ? netlink_ack+0xdf0/0xdf0
[ 17.615123][ T278] ? netlink_deliver_tap+0x13e/0x340
[ 17.615126][ T278] ? netlink_deliver_tap+0xc3/0x340
[ 17.615129][ T278] netlink_unicast+0x4aa/0x780
[ 17.615133][ T278] ? netlink_attachskb+0x810/0x810
[ 17.615136][ T278] ? __lock_acquire+0x449/0x7e0
[ 17.615141][ T278] netlink_sendmsg+0x714/0xbd0
[ 17.615145][ T278] ? netlink_unicast+0x780/0x780
[ 17.615148][ T278] ? __import_iovec+0x230/0x3b0
[ 17.615153][ T278] ? netlink_unicast+0x780/0x780
[ 17.615157][ T278] ____sys_sendmsg+0x3dd/0x890
[ 17.615160][ T278] ? get_timestamp.constprop.0+0x370/0x370
[ 17.615163][ T278] ? __copy_msghdr+0x3c0/0x3c0
[ 17.615170][ T278] ___sys_sendmsg+0xed/0x170
[ 17.615173][ T278] ? kasan_record_aux_stack+0x8c/0xa0
[ 17.615177][ T278] ? __call_rcu_common.constprop.0+0xa8/0x630
[ 17.615181][ T278] ? copy_msghdr_from_user+0x110/0x110
[ 17.615185][ T278] ? find_held_lock+0x2b/0x80
[ 17.615189][ T278] ? __lock_acquire+0x449/0x7e0
[ 17.615194][ T278] ? find_held_lock+0x2b/0x80
[ 17.615198][ T278] ? __virt_addr_valid+0x22a/0x450
[ 17.615203][ T278] ? __lock_release+0x5d/0x170
[ 17.615209][ T278] __sys_sendmsg+0x10b/0x1a0
[ 17.615211][ T278] ? __call_rcu_common.constprop.0+0x318/0x630
[ 17.615214][ T278] ? __sys_sendmsg_sock+0x20/0x20
[ 17.615221][ T278] ? rcu_is_watching+0x12/0xb0
[ 17.615226][ T278] do_syscall_64+0xc1/0xfd0
[ 17.615233][ T278] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 17.615238][ T278] RIP: 0033:0x7f30b85b61d7
[ 17.615244][ T278] 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
[ 17.615248][ T278] RSP: 002b:00007ffe08d73b78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 17.615253][ T278] RAX: ffffffffffffffda RBX: 00007ffe08d742a0 RCX: 00007f30b85b61d7
[ 17.615255][ T278] RDX: 0000000000000000 RSI: 00007ffe08d73be0 RDI: 0000000000000005
[ 17.615258][ T278] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078
[ 17.615260][ T278] R10: 00007f30b84b2f60 R11: 0000000000000246 R12: 0000000000000002
[ 17.615263][ T278] R13: 00000000690df043 R14: 0000000000499600 R15: 0000000000000000
[ 17.615274][ T278]
[ 17.615276][ T278]
[ 17.628624][ T278] Allocated by task 271:
[ 17.628766][ T278] kasan_save_stack+0x24/0x40
[ 17.628941][ T278] kasan_save_track+0x14/0x30
[ 17.629122][ T278] __kasan_kmalloc+0x7b/0x90
[ 17.629285][ T278] __kvmalloc_node_noprof+0x2e5/0x8e0
[ 17.629475][ T278] alloc_netdev_mqs+0x7d/0x1370
[ 17.629664][ T278] rtnl_create_link+0xa9e/0xe20
[ 17.629848][ T278] rtnl_newlink_create+0x203/0x8f0
[ 17.630036][ T278] __rtnl_newlink+0x231/0xa30
[ 17.630199][ T278] rtnl_newlink+0x693/0xa60
[ 17.630361][ T278] rtnetlink_rcv_msg+0x709/0xc00
[ 17.630550][ T278] netlink_rcv_skb+0x121/0x340
[ 17.630725][ T278] netlink_unicast+0x4aa/0x780
[ 17.630901][ T278] netlink_sendmsg+0x714/0xbd0
[ 17.631069][ T278] ____sys_sendmsg+0x3dd/0x890
[ 17.631232][ T278] ___sys_sendmsg+0xed/0x170
[ 17.631433][ T278] __sys_sendmsg+0x10b/0x1a0
[ 17.631599][ T278] do_syscall_64+0xc1/0xfd0
[ 17.631772][ T278] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 17.631985][ T278]
[ 17.632068][ T278] Freed by task 278:
[ 17.632191][ T278] kasan_save_stack+0x24/0x40
[ 17.632409][ T278] kasan_save_track+0x14/0x30
[ 17.632577][ T278] __kasan_save_free_info+0x3b/0x60
[ 17.632740][ T278] __kasan_slab_free+0x3f/0x60
[ 17.632918][ T278] kfree+0x21d/0x540
[ 17.633048][ T278] device_release+0x9c/0x210
[ 17.633212][ T278] kobject_cleanup+0xfe/0x360
[ 17.633379][ T278] netdev_run_todo+0x81f/0xc60
[ 17.633583][ T278] rtnl_dellink+0x350/0xa30
[ 17.633756][ T278] rtnetlink_rcv_msg+0x709/0xc00
[ 17.633935][ T278] netlink_rcv_skb+0x121/0x340
[ 17.634096][ T278] netlink_unicast+0x4aa/0x780
[ 17.634260][ T278] netlink_sendmsg+0x714/0xbd0
[ 17.634555][ T278] ____sys_sendmsg+0x3dd/0x890
[ 17.634813][ T278] ___sys_sendmsg+0xed/0x170
[ 17.634990][ T278] __sys_sendmsg+0x10b/0x1a0
[ 17.635155][ T278] do_syscall_64+0xc1/0xfd0
[ 17.635362][ T278] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 17.635593][ T278]
[ 17.635697][ T278] The buggy address belongs to the object at ffff8880052ca000
[ 17.635697][ T278] which belongs to the cache kmalloc-8k of size 8192
[ 17.636106][ T278] The buggy address is located 1732 bytes inside of
[ 17.636106][ T278] freed 8192-byte region [ffff8880052ca000, ffff8880052cc000)
[ 17.636617][ T278]
[ 17.636703][ T278] The buggy address belongs to the physical page:
[ 17.636910][ T278] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x52c8
[ 17.637316][ T278] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[ 17.637592][ T278] flags: 0x80000000000040(head|node=0|zone=1)
[ 17.637924][ T278] page_type: f5(slab)
[ 17.638074][ T278] raw: 0080000000000040 ffff8880010438c0 ffffea000022a010 ffff888001041228
[ 17.638364][ T278] raw: 0000000000000000 0000000000010001 00000000f5000000 0000000000000000
[ 17.639032][ T278] head: 0080000000000040 ffff8880010438c0 ffffea000022a010 ffff888001041228
[ 17.639494][ T278] head: 0000000000000000 0000000000010001 00000000f5000000 0000000000000000
[ 17.639976][ T278] head: 0080000000000003 ffffea000014b201 00000000ffffffff 00000000ffffffff
[ 17.640463][ T278] head: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
[ 17.640947][ T278] page dumped because: kasan: bad access detected
[ 17.641460][ T278]
[ 17.641550][ T278] Memory state around the buggy address:
[ 17.641708][ T278] ffff8880052ca580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 17.641955][ T278] ffff8880052ca600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 17.642283][ T278] >ffff8880052ca680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 17.642534][ T278] ^
[ 17.642820][ T278] ffff8880052ca700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 17.643055][ T278] ffff8880052ca780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 17.643290][ T278] ==================================================================
[ 17.644224][ T278] Disabling lock debugging due to kernel taint
[ 17.644476][ T278] ------------[ cut here ]------------
[ 17.644653][ T278] refcount_t: underflow; use-after-free.
[ 17.644864][ T278] WARNING: CPU: 2 PID: 278 at lib/refcount.c:28 refcount_warn_saturate+0x16f/0x1b0
[ 17.645207][ T278] Modules linked in: vxlan
[ 17.645413][ T278] CPU: 2 UID: 0 PID: 278 Comm: ip Tainted: G B 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 17.645760][ T278] Tainted: [B]=BAD_PAGE
[ 17.645912][ T278] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 17.646142][ T278] RIP: 0010:refcount_warn_saturate+0x16f/0x1b0
[ 17.646389][ T278] 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 a5 87 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
[ 17.646993][ T278] RSP: 0018:ffffc90000c171f0 EFLAGS: 00010286
[ 17.647241][ T278] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[ 17.647525][ T278] RDX: 0000000000000002 RSI: 0000000000000004 RDI: 0000000000000001
[ 17.647791][ T278] RBP: 0000000000000003 R08: 0000000000000000 R09: fffffbfff1140934
[ 17.648782][ T278] R10: 0000000000000003 R11: ffffc90000c16d80 R12: 0000000000000001
[ 17.649133][ T278] R13: dffffc0000000000 R14: dead000000000122 R15: dead000000000100
[ 17.649550][ T278] FS: 00007f30b83e8800(0000) GS:ffff8880e3208000(0000) knlGS:0000000000000000
[ 17.650223][ T278] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 17.650595][ T278] CR2: 00000000004e5d20 CR3: 000000000b668005 CR4: 0000000000772ef0
[ 17.650927][ T278] PKRU: 55555554
[ 17.651131][ T278] Call Trace:
[ 17.651359][ T278]
[ 17.651535][ T278] netdev_run_todo+0x5f0/0xc60
[ 17.651780][ T278] ? dev_ingress_queue_create+0x190/0x190
[ 17.652033][ T278] ? generic_xdp_install+0x410/0x410
[ 17.652273][ T278] ? __lock_acquire+0x449/0x7e0
[ 17.652543][ T278] rtnl_dellink+0x350/0xa30
[ 17.652787][ T278] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 17.653097][ T278] ? find_held_lock+0x2b/0x80
[ 17.653355][ T278] ? __lock_acquire+0x449/0x7e0
[ 17.653622][ T278] ? find_held_lock+0x2b/0x80
[ 17.653865][ T278] ? rtnetlink_rcv_msg+0x6e6/0xc00
[ 17.654119][ T278] ? __lock_release+0x5d/0x170
[ 17.654361][ T278] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 17.654653][ T278] rtnetlink_rcv_msg+0x709/0xc00
[ 17.654927][ T278] ? rtnl_port_fill+0x890/0x890
[ 17.655170][ T278] ? __lock_acquire+0x449/0x7e0
[ 17.655429][ T278] netlink_rcv_skb+0x121/0x340
[ 17.655678][ T278] ? rtnl_port_fill+0x890/0x890
[ 17.655933][ T278] ? netlink_ack+0xdf0/0xdf0
[ 17.656197][ T278] ? netlink_deliver_tap+0x13e/0x340
[ 17.656464][ T278] ? netlink_deliver_tap+0xc3/0x340
[ 17.656710][ T278] netlink_unicast+0x4aa/0x780
[ 17.656964][ T278] ? netlink_attachskb+0x810/0x810
[ 17.657207][ T278] ? __lock_acquire+0x449/0x7e0
[ 17.657474][ T278] netlink_sendmsg+0x714/0xbd0
[ 17.657731][ T278] ? netlink_unicast+0x780/0x780
[ 17.657986][ T278] ? __import_iovec+0x230/0x3b0
[ 17.658243][ T278] ? netlink_unicast+0x780/0x780
[ 17.658488][ T278] ____sys_sendmsg+0x3dd/0x890
[ 17.658735][ T278] ? get_timestamp.constprop.0+0x370/0x370
[ 17.659026][ T278] ? __copy_msghdr+0x3c0/0x3c0
[ 17.659269][ T278] ___sys_sendmsg+0xed/0x170
[ 17.659509][ T278] ? kasan_record_aux_stack+0x8c/0xa0
[ 17.659751][ T278] ? __call_rcu_common.constprop.0+0xa8/0x630
[ 17.660042][ T278] ? copy_msghdr_from_user+0x110/0x110
[ 17.660283][ T278] ? find_held_lock+0x2b/0x80
[ 17.660535][ T278] ? __lock_acquire+0x449/0x7e0
[ 17.660777][ T278] ? find_held_lock+0x2b/0x80
[ 17.661031][ T278] ? __virt_addr_valid+0x22a/0x450
[ 17.661271][ T278] ? __lock_release+0x5d/0x170
[ 17.661522][ T278] __sys_sendmsg+0x10b/0x1a0
[ 17.661767][ T278] ? __call_rcu_common.constprop.0+0x318/0x630
[ 17.662055][ T278] ? __sys_sendmsg_sock+0x20/0x20
[ 17.662299][ T278] ? rcu_is_watching+0x12/0xb0
[ 17.662544][ T278] do_syscall_64+0xc1/0xfd0
[ 17.662797][ T278] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 17.663088][ T278] RIP: 0033:0x7f30b85b61d7
[ 17.663339][ T278] 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
[ 17.664051][ T278] RSP: 002b:00007ffe08d73b78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 17.664319][ T278] RAX: ffffffffffffffda RBX: 00007ffe08d742a0 RCX: 00007f30b85b61d7
[ 17.664594][ T278] RDX: 0000000000000000 RSI: 00007ffe08d73be0 RDI: 0000000000000005
[ 17.664870][ T278] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078
[ 17.665198][ T278] R10: 00007f30b84b2f60 R11: 0000000000000246 R12: 0000000000000002
[ 17.665490][ T278] R13: 00000000690df043 R14: 0000000000499600 R15: 0000000000000000
[ 17.665762][ T278]
[ 17.665926][ T278] irq event stamp: 41507
[ 17.666069][ T278] hardirqs last enabled at (41507): [] finish_task_switch.isra.0+0x245/0x960
[ 17.666416][ T278] hardirqs last disabled at (41506): [] __schedule+0x94a/0x1b10
[ 17.666723][ T278] softirqs last enabled at (41050): [] handle_softirqs+0x352/0x610
[ 17.667045][ T278] softirqs last disabled at (41039): [] irq_exit_rcu+0xab/0x100
[ 17.667370][ T278] ---[ end trace 0000000000000000 ]---
[ 17.679006][ T278] ip (278) used greatest stack depth: 24232 bytes left
[ 86.944739][ T1395] br0: port 1(vx10) entered blocking state
[ 86.945149][ T1395] br0: port 1(vx10) entered disabled state
[ 86.945485][ T1395] vx10: entered allmulticast mode
[ 86.947480][ T1395] vx10: entered promiscuous mode
[ 88.148117][ T1422] vx10: left allmulticast mode
[ 88.148348][ T1422] vx10: left promiscuous mode
[ 88.148662][ T1422] br0: port 1(vx10) entered disabled state