[ 14.562125][ T251] ip (251) used greatest stack depth: 23968 bytes left
[ 51.937382][ T485] ==================================================================
[ 51.937753][ T485] BUG: KASAN: slab-use-after-free in kobject_put+0xbb/0xd0
[ 51.938056][ T485] Read of size 1 at addr ffff8880105816ac by task ip/485
[ 51.938279][ T485]
[ 51.938385][ T485] CPU: 2 UID: 0 PID: 485 Comm: ip Not tainted 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 51.938391][ T485] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 51.938397][ T485] Call Trace:
[ 51.938401][ T485]
[ 51.938403][ T485] dump_stack_lvl+0x82/0xc0
[ 51.938413][ T485] print_address_description.constprop.0+0x2c/0x3a0
[ 51.938431][ T485] ? kobject_put+0xbb/0xd0
[ 51.938436][ T485] print_report+0xb4/0x270
[ 51.938438][ T485] ? kobject_put+0xbb/0xd0
[ 51.938442][ T485] ? kasan_addr_to_slab+0x21/0x70
[ 51.938446][ T485] ? kobject_put+0xbb/0xd0
[ 51.938451][ T485] kasan_report+0xca/0x100
[ 51.938456][ T485] ? kobject_put+0xbb/0xd0
[ 51.938465][ T485] kobject_put+0xbb/0xd0
[ 51.938469][ T485] netdev_run_todo+0x5f0/0xc60
[ 51.938480][ T485] ? dev_ingress_queue_create+0x190/0x190
[ 51.938483][ T485] ? generic_xdp_install+0x410/0x410
[ 51.938487][ T485] ? vrf_dellink+0xff/0x150 [vrf]
[ 51.938498][ T485] ? vrf_map_unregister_dev+0x480/0x480 [vrf]
[ 51.938503][ T485] ? __lock_acquire+0x449/0x7e0
[ 51.938521][ T485] rtnl_dellink+0x350/0xa30
[ 51.938527][ T485] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 51.938546][ T485] ? find_held_lock+0x2b/0x80
[ 51.938551][ T485] ? __lock_acquire+0x449/0x7e0
[ 51.938559][ T485] ? find_held_lock+0x2b/0x80
[ 51.938562][ T485] ? rtnetlink_rcv_msg+0x6e6/0xc00
[ 51.938565][ T485] ? __lock_release+0x5d/0x170
[ 51.938569][ T485] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 51.938573][ T485] rtnetlink_rcv_msg+0x709/0xc00
[ 51.938576][ T485] ? rtnl_port_fill+0x850/0x850
[ 51.938579][ T485] ? __lock_acquire+0x449/0x7e0
[ 51.938586][ T485] netlink_rcv_skb+0x121/0x340
[ 51.938593][ T485] ? rtnl_port_fill+0x850/0x850
[ 51.938596][ T485] ? netlink_ack+0xdd0/0xdd0
[ 51.938602][ T485] ? netlink_deliver_tap+0x13e/0x340
[ 51.938605][ T485] ? netlink_deliver_tap+0xc3/0x340
[ 51.938609][ T485] netlink_unicast+0x4aa/0x780
[ 51.938613][ T485] ? netlink_attachskb+0x810/0x810
[ 51.938617][ T485] ? __lock_acquire+0x449/0x7e0
[ 51.938622][ T485] netlink_sendmsg+0x714/0xbd0
[ 51.938627][ T485] ? netlink_unicast+0x780/0x780
[ 51.938630][ T485] ? __import_iovec+0x230/0x3b0
[ 51.938646][ T485] ? netlink_unicast+0x780/0x780
[ 51.938650][ T485] ____sys_sendmsg+0x3dd/0x890
[ 51.938662][ T485] ? get_timestamp.constprop.0+0x380/0x380
[ 51.938665][ T485] ? __copy_msghdr+0x3c0/0x3c0
[ 51.938674][ T485] ___sys_sendmsg+0xed/0x170
[ 51.938677][ T485] ? kasan_record_aux_stack+0x8c/0xa0
[ 51.938680][ T485] ? __call_rcu_common.constprop.0+0xa8/0x630
[ 51.938694][ T485] ? copy_msghdr_from_user+0x110/0x110
[ 51.938699][ T485] ? find_held_lock+0x2b/0x80
[ 51.938703][ T485] ? __lock_acquire+0x449/0x7e0
[ 51.938709][ T485] ? find_held_lock+0x2b/0x80
[ 51.938713][ T485] ? __virt_addr_valid+0x22a/0x450
[ 51.938728][ T485] ? __lock_release+0x5d/0x170
[ 51.938734][ T485] __sys_sendmsg+0x10b/0x1a0
[ 51.938737][ T485] ? __call_rcu_common.constprop.0+0x318/0x630
[ 51.938741][ T485] ? __sys_sendmsg_sock+0x20/0x20
[ 51.938749][ T485] ? rcu_is_watching+0x12/0xb0
[ 51.938753][ T485] do_syscall_64+0xc1/0xfd0
[ 51.938760][ T485] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 51.938771][ T485] RIP: 0033:0x7fad643411d7
[ 51.938782][ T485] 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
[ 51.938788][ T485] RSP: 002b:00007fff7bfa11d8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 51.938795][ T485] RAX: ffffffffffffffda RBX: 00007fff7bfa1900 RCX: 00007fad643411d7
[ 51.938798][ T485] RDX: 0000000000000000 RSI: 00007fff7bfa1240 RDI: 0000000000000005
[ 51.938800][ T485] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078
[ 51.938801][ T485] R10: 00007fad6423df60 R11: 0000000000000246 R12: 0000000000000002
[ 51.938803][ T485] R13: 00000000690df930 R14: 0000000000499600 R15: 0000000000000000
[ 51.938810][ T485]
[ 51.938811][ T485]
[ 51.951632][ T485] Allocated by task 306:
[ 51.951771][ T485] kasan_save_stack+0x24/0x40
[ 51.951963][ T485] kasan_save_track+0x14/0x30
[ 51.952149][ T485] __kasan_kmalloc+0x7b/0x90
[ 51.952317][ T485] __kvmalloc_node_noprof+0x2e5/0x8e0
[ 51.952497][ T485] alloc_netdev_mqs+0x7d/0x1370
[ 51.952674][ T485] rtnl_create_link+0xa9e/0xe20
[ 51.952848][ T485] rtnl_newlink_create+0x203/0x770
[ 51.953018][ T485] __rtnl_newlink+0x231/0xa30
[ 51.953194][ T485] rtnl_newlink+0x693/0xa60
[ 51.953356][ T485] rtnetlink_rcv_msg+0x709/0xc00
[ 51.953528][ T485] netlink_rcv_skb+0x121/0x340
[ 51.953942][ T485] netlink_unicast+0x4aa/0x780
[ 51.954121][ T485] netlink_sendmsg+0x714/0xbd0
[ 51.954290][ T485] ____sys_sendmsg+0x3dd/0x890
[ 51.954462][ T485] ___sys_sendmsg+0xed/0x170
[ 51.954629][ T485] __sys_sendmsg+0x10b/0x1a0
[ 51.954810][ T485] do_syscall_64+0xc1/0xfd0
[ 51.954981][ T485] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 51.955202][ T485]
[ 51.955291][ T485] Freed by task 485:
[ 51.955413][ T485] kasan_save_stack+0x24/0x40
[ 51.955592][ T485] kasan_save_track+0x14/0x30
[ 51.955756][ T485] __kasan_save_free_info+0x3b/0x60
[ 51.955940][ T485] __kasan_slab_free+0x3f/0x60
[ 51.956117][ T485] kfree+0x21d/0x540
[ 51.956238][ T485] device_release+0x9c/0x210
[ 51.956415][ T485] kobject_cleanup+0xfe/0x360
[ 51.956587][ T485] netdev_run_todo+0x81f/0xc60
[ 51.956751][ T485] rtnl_dellink+0x350/0xa30
[ 51.956930][ T485] rtnetlink_rcv_msg+0x709/0xc00
[ 51.957108][ T485] netlink_rcv_skb+0x121/0x340
[ 51.957270][ T485] netlink_unicast+0x4aa/0x780
[ 51.957434][ T485] netlink_sendmsg+0x714/0xbd0
[ 51.957612][ T485] ____sys_sendmsg+0x3dd/0x890
[ 51.957781][ T485] ___sys_sendmsg+0xed/0x170
[ 51.957961][ T485] __sys_sendmsg+0x10b/0x1a0
[ 51.958136][ T485] do_syscall_64+0xc1/0xfd0
[ 51.958304][ T485] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 51.958522][ T485]
[ 51.958611][ T485] The buggy address belongs to the object at ffff888010581000
[ 51.958611][ T485] which belongs to the cache kmalloc-4k of size 4096
[ 51.959026][ T485] The buggy address is located 1708 bytes inside of
[ 51.959026][ T485] freed 4096-byte region [ffff888010581000, ffff888010582000)
[ 51.959430][ T485]
[ 51.959529][ T485] The buggy address belongs to the physical page:
[ 51.959742][ T485] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10580
[ 51.960052][ T485] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[ 51.960323][ T485] flags: 0x80000000000040(head|node=0|zone=1)
[ 51.960547][ T485] page_type: f5(slab)
[ 51.960686][ T485] raw: 0080000000000040 ffff888001043700 ffffea0000475810 ffffea00000a1e10
[ 51.960998][ T485] raw: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 51.961300][ T485] head: 0080000000000040 ffff888001043700 ffffea0000475810 ffffea00000a1e10
[ 51.961597][ T485] head: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 51.961902][ T485] head: 0080000000000003 ffffea0000416001 00000000ffffffff 00000000ffffffff
[ 51.962224][ T485] head: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
[ 51.962519][ T485] page dumped because: kasan: bad access detected
[ 51.962721][ T485]
[ 51.962819][ T485] Memory state around the buggy address:
[ 51.962991][ T485] ffff888010581580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 51.963244][ T485] ffff888010581600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 51.963490][ T485] >ffff888010581680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 51.963737][ T485] ^
[ 51.963912][ T485] ffff888010581700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 51.964158][ T485] ffff888010581780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 51.964400][ T485] ==================================================================
[ 51.964970][ T485] Disabling lock debugging due to kernel taint
[ 51.965403][ T485] ------------[ cut here ]------------
[ 51.965652][ T485] refcount_t: underflow; use-after-free.
[ 51.966035][ T485] WARNING: CPU: 0 PID: 485 at lib/refcount.c:28 refcount_warn_saturate+0x16f/0x1b0
[ 51.966583][ T485] Modules linked in: vrf veth
[ 51.966890][ T485] CPU: 0 UID: 0 PID: 485 Comm: ip Tainted: G B 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 51.967471][ T485] Tainted: [B]=BAD_PAGE
[ 51.967698][ T485] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 51.968052][ T485] RIP: 0010:refcount_warn_saturate+0x16f/0x1b0
[ 51.968458][ T485] 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 c5 ba 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
[ 51.969327][ T485] RSP: 0000:ffffc90000df71f0 EFLAGS: 00010286
[ 51.969615][ T485] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[ 51.969911][ T485] RDX: 0000000000000002 RSI: 0000000000000004 RDI: 0000000000000001
[ 51.970246][ T485] RBP: 0000000000000003 R08: 0000000000000000 R09: fffffbfff76be134
[ 51.970515][ T485] R10: 0000000000000003 R11: ffffc90000df6d80 R12: 0000000000000001
[ 51.970763][ T485] R13: dffffc0000000000 R14: dead000000000122 R15: dead000000000100
[ 51.971036][ T485] FS: 00007fad64173800(0000) GS:ffff8880797f2000(0000) knlGS:0000000000000000
[ 51.971347][ T485] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 51.971573][ T485] CR2: 0000000000498d80 CR3: 00000000145b6001 CR4: 0000000000772ef0
[ 51.971838][ T485] PKRU: 55555554
[ 51.971976][ T485] Call Trace:
[ 51.972107][ T485]
[ 51.972236][ T485] netdev_run_todo+0x5f0/0xc60
[ 51.972435][ T485] ? dev_ingress_queue_create+0x190/0x190
[ 51.972659][ T485] ? generic_xdp_install+0x410/0x410
[ 51.972843][ T485] ? vrf_dellink+0xff/0x150 [vrf]
[ 51.973016][ T485] ? vrf_map_unregister_dev+0x480/0x480 [vrf]
[ 51.973222][ T485] ? __lock_acquire+0x449/0x7e0
[ 51.973414][ T485] rtnl_dellink+0x350/0xa30
[ 51.973581][ T485] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 51.973802][ T485] ? find_held_lock+0x2b/0x80
[ 51.974063][ T485] ? __lock_acquire+0x449/0x7e0
[ 51.974315][ T485] ? find_held_lock+0x2b/0x80
[ 51.974576][ T485] ? rtnetlink_rcv_msg+0x6e6/0xc00
[ 51.974800][ T485] ? __lock_release+0x5d/0x170
[ 51.974986][ T485] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 51.975192][ T485] rtnetlink_rcv_msg+0x709/0xc00
[ 51.975379][ T485] ? rtnl_port_fill+0x850/0x850
[ 51.975544][ T485] ? __lock_acquire+0x449/0x7e0
[ 51.975721][ T485] netlink_rcv_skb+0x121/0x340
[ 51.975927][ T485] ? rtnl_port_fill+0x850/0x850
[ 51.976104][ T485] ? netlink_ack+0xdd0/0xdd0
[ 51.976283][ T485] ? netlink_deliver_tap+0x13e/0x340
[ 51.976446][ T485] ? netlink_deliver_tap+0xc3/0x340
[ 51.976609][ T485] netlink_unicast+0x4aa/0x780
[ 51.976778][ T485] ? netlink_attachskb+0x810/0x810
[ 51.976956][ T485] ? __lock_acquire+0x449/0x7e0
[ 51.977124][ T485] netlink_sendmsg+0x714/0xbd0
[ 51.977295][ T485] ? netlink_unicast+0x780/0x780
[ 51.977461][ T485] ? __import_iovec+0x230/0x3b0
[ 51.977629][ T485] ? netlink_unicast+0x780/0x780
[ 51.977792][ T485] ____sys_sendmsg+0x3dd/0x890
[ 51.977968][ T485] ? get_timestamp.constprop.0+0x380/0x380
[ 51.978177][ T485] ? __copy_msghdr+0x3c0/0x3c0
[ 51.978457][ T485] ___sys_sendmsg+0xed/0x170
[ 51.978626][ T485] ? kasan_record_aux_stack+0x8c/0xa0
[ 51.978795][ T485] ? __call_rcu_common.constprop.0+0xa8/0x630
[ 51.979015][ T485] ? copy_msghdr_from_user+0x110/0x110
[ 51.979177][ T485] ? find_held_lock+0x2b/0x80
[ 51.979446][ T485] ? __lock_acquire+0x449/0x7e0
[ 51.979622][ T485] ? find_held_lock+0x2b/0x80
[ 51.979920][ T485] ? __virt_addr_valid+0x22a/0x450
[ 51.980109][ T485] ? __lock_release+0x5d/0x170
[ 51.980288][ T485] __sys_sendmsg+0x10b/0x1a0
[ 51.980551][ T485] ? __call_rcu_common.constprop.0+0x318/0x630
[ 51.980755][ T485] ? __sys_sendmsg_sock+0x20/0x20
[ 51.981023][ T485] ? rcu_is_watching+0x12/0xb0
[ 51.981189][ T485] do_syscall_64+0xc1/0xfd0
[ 51.981370][ T485] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 51.981575][ T485] RIP: 0033:0x7fad643411d7
[ 51.981749][ T485] 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
[ 51.982368][ T485] RSP: 002b:00007fff7bfa11d8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 51.982834][ T485] RAX: ffffffffffffffda RBX: 00007fff7bfa1900 RCX: 00007fad643411d7
[ 51.983120][ T485] RDX: 0000000000000000 RSI: 00007fff7bfa1240 RDI: 0000000000000005
[ 51.983387][ T485] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078
[ 51.983657][ T485] R10: 00007fad6423df60 R11: 0000000000000246 R12: 0000000000000002
[ 51.983921][ T485] R13: 00000000690df930 R14: 0000000000499600 R15: 0000000000000000
[ 51.984283][ T485]
[ 51.984416][ T485] irq event stamp: 43323
[ 51.984553][ T485] hardirqs last enabled at (43323): [] finish_task_switch.isra.0+0x245/0x960
[ 51.984904][ T485] hardirqs last disabled at (43322): [] __schedule+0x94a/0x1b10
[ 51.985321][ T485] softirqs last enabled at (43238): [] handle_softirqs+0x352/0x610
[ 51.985621][ T485] softirqs last disabled at (43229): [] irq_exit_rcu+0xab/0x100
[ 51.986031][ T485] ---[ end trace 0000000000000000 ]---