[ 32.152588][ T376] ==================================================================
[ 32.152898][ T376] BUG: KASAN: slab-use-after-free in kobject_put+0xbb/0xd0
[ 32.153156][ T376] Read of size 1 at addr ffff8880075446ac by task ip/376
[ 32.153363][ T376]
[ 32.153462][ T376] CPU: 3 UID: 0 PID: 376 Comm: ip Not tainted 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 32.153468][ T376] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 32.153470][ T376] Call Trace:
[ 32.153472][ T376]
[ 32.153474][ T376] dump_stack_lvl+0x82/0xc0
[ 32.153480][ T376] print_address_description.constprop.0+0x2c/0x3a0
[ 32.153486][ T376] ? kobject_put+0xbb/0xd0
[ 32.153490][ T376] print_report+0xb4/0x270
[ 32.153493][ T376] ? kobject_put+0xbb/0xd0
[ 32.153496][ T376] ? kasan_addr_to_slab+0x21/0x70
[ 32.153499][ T376] ? kobject_put+0xbb/0xd0
[ 32.153502][ T376] kasan_report+0xca/0x100
[ 32.153506][ T376] ? kobject_put+0xbb/0xd0
[ 32.153511][ T376] kobject_put+0xbb/0xd0
[ 32.153514][ T376] netdev_run_todo+0x5f0/0xc60
[ 32.153519][ T376] ? dev_ingress_queue_create+0x190/0x190
[ 32.153522][ T376] ? generic_xdp_install+0x410/0x410
[ 32.153526][ T376] ? vrf_dellink+0xff/0x150 [vrf]
[ 32.153533][ T376] ? vrf_map_unregister_dev+0x480/0x480 [vrf]
[ 32.153537][ T376] ? __lock_acquire+0x449/0x7e0
[ 32.153545][ T376] rtnl_dellink+0x350/0xa30
[ 32.153550][ T376] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 32.153569][ T376] ? find_held_lock+0x2b/0x80
[ 32.153573][ T376] ? __lock_acquire+0x449/0x7e0
[ 32.153579][ T376] ? find_held_lock+0x2b/0x80
[ 32.153583][ T376] ? rtnetlink_rcv_msg+0x6e6/0xc00
[ 32.153585][ T376] ? __lock_release+0x5d/0x170
[ 32.153590][ T376] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 32.153593][ T376] rtnetlink_rcv_msg+0x709/0xc00
[ 32.153597][ T376] ? rtnl_port_fill+0x850/0x850
[ 32.153599][ T376] ? __lock_acquire+0x449/0x7e0
[ 32.153606][ T376] netlink_rcv_skb+0x121/0x340
[ 32.153610][ T376] ? rtnl_port_fill+0x850/0x850
[ 32.153614][ T376] ? netlink_ack+0xdd0/0xdd0
[ 32.153620][ T376] ? netlink_deliver_tap+0x13e/0x340
[ 32.153623][ T376] ? netlink_deliver_tap+0xc3/0x340
[ 32.153627][ T376] netlink_unicast+0x4aa/0x780
[ 32.153631][ T376] ? netlink_attachskb+0x810/0x810
[ 32.153634][ T376] ? __lock_acquire+0x449/0x7e0
[ 32.153640][ T376] netlink_sendmsg+0x714/0xbd0
[ 32.153644][ T376] ? netlink_unicast+0x780/0x780
[ 32.153648][ T376] ? __import_iovec+0x230/0x3b0
[ 32.153653][ T376] ? netlink_unicast+0x780/0x780
[ 32.153657][ T376] ____sys_sendmsg+0x3dd/0x890
[ 32.153662][ T376] ? get_timestamp.constprop.0+0x380/0x380
[ 32.153665][ T376] ? __copy_msghdr+0x3c0/0x3c0
[ 32.153673][ T376] ___sys_sendmsg+0xed/0x170
[ 32.153677][ T376] ? kasan_record_aux_stack+0x8c/0xa0
[ 32.153680][ T376] ? __call_rcu_common.constprop.0+0xa8/0x630
[ 32.153686][ T376] ? copy_msghdr_from_user+0x110/0x110
[ 32.153691][ T376] ? find_held_lock+0x2b/0x80
[ 32.153695][ T376] ? __lock_acquire+0x449/0x7e0
[ 32.153701][ T376] ? find_held_lock+0x2b/0x80
[ 32.153704][ T376] ? __virt_addr_valid+0x22a/0x450
[ 32.153709][ T376] ? __lock_release+0x5d/0x170
[ 32.153715][ T376] __sys_sendmsg+0x10b/0x1a0
[ 32.153718][ T376] ? __call_rcu_common.constprop.0+0x318/0x630
[ 32.153722][ T376] ? __sys_sendmsg_sock+0x20/0x20
[ 32.153729][ T376] ? rcu_is_watching+0x12/0xb0
[ 32.153733][ T376] do_syscall_64+0xc1/0xfd0
[ 32.153738][ T376] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 32.153742][ T376] RIP: 0033:0x7fbd219da1d7
[ 32.153746][ T376] 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
[ 32.153749][ T376] RSP: 002b:00007ffc7c6d9168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 32.153753][ T376] RAX: ffffffffffffffda RBX: 00007ffc7c6d9890 RCX: 00007fbd219da1d7
[ 32.153755][ T376] RDX: 0000000000000000 RSI: 00007ffc7c6d91d0 RDI: 0000000000000005
[ 32.153757][ T376] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078
[ 32.153758][ T376] R10: 00007fbd218d6f60 R11: 0000000000000246 R12: 0000000000000002
[ 32.153760][ T376] R13: 00000000690dfb24 R14: 0000000000499600 R15: 0000000000000000
[ 32.153766][ T376]
[ 32.153768][ T376]
[ 32.167036][ T376] Allocated by task 292:
[ 32.167171][ T376] kasan_save_stack+0x24/0x40
[ 32.167357][ T376] kasan_save_track+0x14/0x30
[ 32.167558][ T376] __kasan_kmalloc+0x7b/0x90
[ 32.167720][ T376] __kvmalloc_node_noprof+0x2e5/0x8e0
[ 32.167891][ T376] alloc_netdev_mqs+0x7d/0x1370
[ 32.168088][ T376] rtnl_create_link+0xa9e/0xe20
[ 32.168271][ T376] rtnl_newlink_create+0x203/0x770
[ 32.168442][ T376] __rtnl_newlink+0x231/0xa30
[ 32.168607][ T376] rtnl_newlink+0x693/0xa60
[ 32.168781][ T376] rtnetlink_rcv_msg+0x709/0xc00
[ 32.168946][ T376] netlink_rcv_skb+0x121/0x340
[ 32.169110][ T376] netlink_unicast+0x4aa/0x780
[ 32.169314][ T376] netlink_sendmsg+0x714/0xbd0
[ 32.169517][ T376] ____sys_sendmsg+0x3dd/0x890
[ 32.169685][ T376] ___sys_sendmsg+0xed/0x170
[ 32.169848][ T376] __sys_sendmsg+0x10b/0x1a0
[ 32.170012][ T376] do_syscall_64+0xc1/0xfd0
[ 32.170204][ T376] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 32.170418][ T376]
[ 32.170501][ T376] Freed by task 376:
[ 32.170630][ T376] kasan_save_stack+0x24/0x40
[ 32.170817][ T376] kasan_save_track+0x14/0x30
[ 32.171004][ T376] __kasan_save_free_info+0x3b/0x60
[ 32.171176][ T376] __kasan_slab_free+0x3f/0x60
[ 32.171339][ T376] kfree+0x21d/0x540
[ 32.171491][ T376] device_release+0x9c/0x210
[ 32.171662][ T376] kobject_cleanup+0xfe/0x360
[ 32.171827][ T376] netdev_run_todo+0x81f/0xc60
[ 32.171992][ T376] rtnl_dellink+0x350/0xa30
[ 32.172161][ T376] rtnetlink_rcv_msg+0x709/0xc00
[ 32.172336][ T376] netlink_rcv_skb+0x121/0x340
[ 32.172514][ T376] netlink_unicast+0x4aa/0x780
[ 32.172679][ T376] netlink_sendmsg+0x714/0xbd0
[ 32.172839][ T376] ____sys_sendmsg+0x3dd/0x890
[ 32.173005][ T376] ___sys_sendmsg+0xed/0x170
[ 32.173172][ T376] __sys_sendmsg+0x10b/0x1a0
[ 32.173337][ T376] do_syscall_64+0xc1/0xfd0
[ 32.173519][ T376] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 32.173734][ T376]
[ 32.173817][ T376] The buggy address belongs to the object at ffff888007544000
[ 32.173817][ T376] which belongs to the cache kmalloc-4k of size 4096
[ 32.174228][ T376] The buggy address is located 1708 bytes inside of
[ 32.174228][ T376] freed 4096-byte region [ffff888007544000, ffff888007545000)
[ 32.174644][ T376]
[ 32.174741][ T376] The buggy address belongs to the physical page:
[ 32.174957][ T376] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x7540
[ 32.175262][ T376] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[ 32.175545][ T376] flags: 0x80000000000040(head|node=0|zone=1)
[ 32.175758][ T376] page_type: f5(slab)
[ 32.175903][ T376] raw: 0080000000000040 ffff888001043700 ffffea00001d3610 ffffea000017ec10
[ 32.176236][ T376] raw: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 32.176539][ T376] head: 0080000000000040 ffff888001043700 ffffea00001d3610 ffffea000017ec10
[ 32.176830][ T376] head: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 32.177136][ T376] head: 0080000000000003 ffffea00001d5001 00000000ffffffff 00000000ffffffff
[ 32.177458][ T376] head: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
[ 32.177744][ T376] page dumped because: kasan: bad access detected
[ 32.177951][ T376]
[ 32.178035][ T376] Memory state around the buggy address:
[ 32.178211][ T376] ffff888007544580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 32.178471][ T376] ffff888007544600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 32.178702][ T376] >ffff888007544680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 32.178954][ T376] ^
[ 32.179118][ T376] ffff888007544700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 32.179370][ T376] ffff888007544780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 32.179638][ T376] ==================================================================
[ 32.179937][ T376] Disabling lock debugging due to kernel taint
[ 32.180245][ T376] ------------[ cut here ]------------
[ 32.180462][ T376] refcount_t: underflow; use-after-free.
[ 32.180685][ T376] WARNING: CPU: 0 PID: 376 at lib/refcount.c:28 refcount_warn_saturate+0x16f/0x1b0
[ 32.181065][ T376] Modules linked in: sch_ingress vrf veth
[ 32.181283][ T376] CPU: 0 UID: 0 PID: 376 Comm: ip Tainted: G B 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 32.181696][ T376] Tainted: [B]=BAD_PAGE
[ 32.181868][ T376] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 32.182134][ T376] RIP: 0010:refcount_warn_saturate+0x16f/0x1b0
[ 32.182414][ T376] 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 b4 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
[ 32.183151][ T376] RSP: 0000:ffffc900009e71f0 EFLAGS: 00010286
[ 32.183416][ T376] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[ 32.183732][ T376] RDX: 0000000000000002 RSI: 0000000000000004 RDI: 0000000000000001
[ 32.184048][ T376] RBP: 0000000000000003 R08: 0000000000000000 R09: fffffbfff6a7e134
[ 32.184355][ T376] R10: 0000000000000003 R11: ffffc900009e6d80 R12: 0000000000000001
[ 32.184662][ T376] R13: dffffc0000000000 R14: dead000000000122 R15: dead000000000100
[ 32.184984][ T376] FS: 00007fbd2180c800(0000) GS:ffff888079df2000(0000) knlGS:0000000000000000
[ 32.185339][ T376] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 32.185598][ T376] CR2: 00007fbd21ae9f88 CR3: 000000000b9ec004 CR4: 0000000000772ef0
[ 32.185934][ T376] PKRU: 55555554
[ 32.186128][ T376] Call Trace:
[ 32.186289][ T376]
[ 32.186394][ T376] netdev_run_todo+0x5f0/0xc60
[ 32.186611][ T376] ? dev_ingress_queue_create+0x190/0x190
[ 32.186816][ T376] ? generic_xdp_install+0x410/0x410
[ 32.187046][ T376] ? vrf_dellink+0xff/0x150 [vrf]
[ 32.187258][ T376] ? vrf_map_unregister_dev+0x480/0x480 [vrf]
[ 32.187519][ T376] ? __lock_acquire+0x449/0x7e0
[ 32.187725][ T376] rtnl_dellink+0x350/0xa30
[ 32.187942][ T376] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 32.188225][ T376] ? find_held_lock+0x2b/0x80
[ 32.188428][ T376] ? __lock_acquire+0x449/0x7e0
[ 32.188631][ T376] ? find_held_lock+0x2b/0x80
[ 32.188847][ T376] ? rtnetlink_rcv_msg+0x6e6/0xc00
[ 32.189055][ T376] ? __lock_release+0x5d/0x170
[ 32.189273][ T376] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 32.189522][ T376] rtnetlink_rcv_msg+0x709/0xc00
[ 32.189735][ T376] ? rtnl_port_fill+0x850/0x850
[ 32.189937][ T376] ? __lock_acquire+0x449/0x7e0
[ 32.190154][ T376] netlink_rcv_skb+0x121/0x340
[ 32.190355][ T376] ? rtnl_port_fill+0x850/0x850
[ 32.190565][ T376] ? netlink_ack+0xdd0/0xdd0
[ 32.190769][ T376] ? netlink_deliver_tap+0x13e/0x340
[ 32.190988][ T376] ? netlink_deliver_tap+0xc3/0x340
[ 32.191196][ T376] netlink_unicast+0x4aa/0x780
[ 32.191397][ T376] ? netlink_attachskb+0x810/0x810
[ 32.191596][ T376] ? __lock_acquire+0x449/0x7e0
[ 32.191799][ T376] netlink_sendmsg+0x714/0xbd0
[ 32.192009][ T376] ? netlink_unicast+0x780/0x780
[ 32.192210][ T376] ? __import_iovec+0x230/0x3b0
[ 32.192415][ T376] ? netlink_unicast+0x780/0x780
[ 32.192619][ T376] ____sys_sendmsg+0x3dd/0x890
[ 32.192827][ T376] ? get_timestamp.constprop.0+0x380/0x380
[ 32.193085][ T376] ? __copy_msghdr+0x3c0/0x3c0
[ 32.193290][ T376] ___sys_sendmsg+0xed/0x170
[ 32.193492][ T376] ? kasan_record_aux_stack+0x8c/0xa0
[ 32.193701][ T376] ? __call_rcu_common.constprop.0+0xa8/0x630
[ 32.193961][ T376] ? copy_msghdr_from_user+0x110/0x110
[ 32.194167][ T376] ? find_held_lock+0x2b/0x80
[ 32.194378][ T376] ? __lock_acquire+0x449/0x7e0
[ 32.194582][ T376] ? find_held_lock+0x2b/0x80
[ 32.194784][ T376] ? __virt_addr_valid+0x22a/0x450
[ 32.195094][ T376] ? __lock_release+0x5d/0x170
[ 32.195298][ T376] __sys_sendmsg+0x10b/0x1a0
[ 32.195500][ T376] ? __call_rcu_common.constprop.0+0x318/0x630
[ 32.195752][ T376] ? __sys_sendmsg_sock+0x20/0x20
[ 32.196063][ T376] ? rcu_is_watching+0x12/0xb0
[ 32.196267][ T376] do_syscall_64+0xc1/0xfd0
[ 32.196471][ T376] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 32.196816][ T376] RIP: 0033:0x7fbd219da1d7
[ 32.197036][ T376] 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
[ 32.197858][ T376] RSP: 002b:00007ffc7c6d9168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 32.198191][ T376] RAX: ffffffffffffffda RBX: 00007ffc7c6d9890 RCX: 00007fbd219da1d7
[ 32.198504][ T376] RDX: 0000000000000000 RSI: 00007ffc7c6d91d0 RDI: 0000000000000005
[ 32.198919][ T376] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078
[ 32.199237][ T376] R10: 00007fbd218d6f60 R11: 0000000000000246 R12: 0000000000000002
[ 32.199633][ T376] R13: 00000000690dfb24 R14: 0000000000499600 R15: 0000000000000000
[ 32.199938][ T376]
[ 32.200100][ T376] irq event stamp: 49977
[ 32.200259][ T376] hardirqs last enabled at (49977): [] finish_task_switch.isra.0+0x245/0x960
[ 32.200754][ T376] hardirqs last disabled at (49976): [] __schedule+0x94a/0x1b10
[ 32.201116][ T376] softirqs last enabled at (49282): [] handle_softirqs+0x352/0x610
[ 32.201482][ T376] softirqs last disabled at (49225): [] irq_exit_rcu+0xab/0x100
[ 32.201836][ T376] ---[ end trace 0000000000000000 ]---