[ 236.339108][ T2842] ==================================================================
[ 236.339473][ T2842] BUG: KASAN: slab-use-after-free in kobject_put+0xbb/0xd0
[ 236.339801][ T2842] Read of size 1 at addr ffff888004bec6ac by task ip/2842
[ 236.340074][ T2842]
[ 236.340182][ T2842] CPU: 3 UID: 0 PID: 2842 Comm: ip Not tainted 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 236.340188][ T2842] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 236.340191][ T2842] Call Trace:
[ 236.340193][ T2842]
[ 236.340195][ T2842] dump_stack_lvl+0x82/0xc0
[ 236.340204][ T2842] print_address_description.constprop.0+0x2c/0x3a0
[ 236.340212][ T2842] ? kobject_put+0xbb/0xd0
[ 236.340216][ T2842] print_report+0xb4/0x270
[ 236.340219][ T2842] ? kobject_put+0xbb/0xd0
[ 236.340222][ T2842] ? kasan_addr_to_slab+0x21/0x70
[ 236.340225][ T2842] ? kobject_put+0xbb/0xd0
[ 236.340229][ T2842] kasan_report+0xca/0x100
[ 236.340232][ T2842] ? kobject_put+0xbb/0xd0
[ 236.340237][ T2842] kobject_put+0xbb/0xd0
[ 236.340241][ T2842] netdev_run_todo+0x5f0/0xc60
[ 236.340247][ T2842] ? dev_ingress_queue_create+0x190/0x190
[ 236.340253][ T2842] ? generic_xdp_install+0x410/0x410
[ 236.340258][ T2842] ? vrf_dellink+0xff/0x150 [vrf]
[ 236.340268][ T2842] ? vrf_map_unregister_dev+0x480/0x480 [vrf]
[ 236.340274][ T2842] ? __lock_acquire+0x449/0x7e0
[ 236.340285][ T2842] rtnl_dellink+0x350/0xa30
[ 236.340291][ T2842] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 236.340310][ T2842] ? find_held_lock+0x2b/0x80
[ 236.340315][ T2842] ? __lock_acquire+0x449/0x7e0
[ 236.340321][ T2842] ? find_held_lock+0x2b/0x80
[ 236.340325][ T2842] ? rtnetlink_rcv_msg+0x6e6/0xc00
[ 236.340327][ T2842] ? __lock_release+0x5d/0x170
[ 236.340332][ T2842] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 236.340335][ T2842] rtnetlink_rcv_msg+0x709/0xc00
[ 236.340339][ T2842] ? rtnl_port_fill+0x850/0x850
[ 236.340341][ T2842] ? __lock_acquire+0x449/0x7e0
[ 236.340348][ T2842] netlink_rcv_skb+0x121/0x340
[ 236.340353][ T2842] ? rtnl_port_fill+0x850/0x850
[ 236.340357][ T2842] ? netlink_ack+0xdd0/0xdd0
[ 236.340363][ T2842] ? netlink_deliver_tap+0x13e/0x340
[ 236.340366][ T2842] ? netlink_deliver_tap+0xc3/0x340
[ 236.340370][ T2842] netlink_unicast+0x4aa/0x780
[ 236.340374][ T2842] ? netlink_attachskb+0x810/0x810
[ 236.340378][ T2842] ? __lock_acquire+0x449/0x7e0
[ 236.340384][ T2842] netlink_sendmsg+0x714/0xbd0
[ 236.340388][ T2842] ? netlink_unicast+0x780/0x780
[ 236.340392][ T2842] ? __import_iovec+0x230/0x3b0
[ 236.340399][ T2842] ? netlink_unicast+0x780/0x780
[ 236.340402][ T2842] ____sys_sendmsg+0x3dd/0x890
[ 236.340409][ T2842] ? get_timestamp.constprop.0+0x380/0x380
[ 236.340412][ T2842] ? __copy_msghdr+0x3c0/0x3c0
[ 236.340421][ T2842] ___sys_sendmsg+0xed/0x170
[ 236.340424][ T2842] ? kasan_record_aux_stack+0x8c/0xa0
[ 236.340427][ T2842] ? __call_rcu_common.constprop.0+0xa8/0x630
[ 236.340434][ T2842] ? copy_msghdr_from_user+0x110/0x110
[ 236.340439][ T2842] ? find_held_lock+0x2b/0x80
[ 236.340443][ T2842] ? __lock_acquire+0x449/0x7e0
[ 236.340449][ T2842] ? find_held_lock+0x2b/0x80
[ 236.340452][ T2842] ? __virt_addr_valid+0x22a/0x450
[ 236.340458][ T2842] ? __lock_release+0x5d/0x170
[ 236.340464][ T2842] __sys_sendmsg+0x10b/0x1a0
[ 236.340467][ T2842] ? __call_rcu_common.constprop.0+0x318/0x630
[ 236.340471][ T2842] ? __sys_sendmsg_sock+0x20/0x20
[ 236.340479][ T2842] ? rcu_is_watching+0x12/0xb0
[ 236.340482][ T2842] do_syscall_64+0xc1/0xfd0
[ 236.340489][ T2842] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 236.340493][ T2842] RIP: 0033:0x7f90f4d641d7
[ 236.340499][ T2842] 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
[ 236.340502][ T2842] RSP: 002b:00007fff81f9e3a8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 236.340506][ T2842] RAX: ffffffffffffffda RBX: 00007fff81f9ead0 RCX: 00007f90f4d641d7
[ 236.340509][ T2842] RDX: 0000000000000000 RSI: 00007fff81f9e410 RDI: 0000000000000005
[ 236.340510][ T2842] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078
[ 236.340512][ T2842] R10: 00007f90f4c60f60 R11: 0000000000000246 R12: 0000000000000002
[ 236.340515][ T2842] R13: 00000000690de9ab R14: 0000000000499600 R15: 0000000000000000
[ 236.340526][ T2842]
[ 236.340528][ T2842]
[ 236.355987][ T2842] Allocated by task 323:
[ 236.356150][ T2842] kasan_save_stack+0x24/0x40
[ 236.356348][ T2842] kasan_save_track+0x14/0x30
[ 236.356539][ T2842] __kasan_kmalloc+0x7b/0x90
[ 236.356718][ T2842] __kvmalloc_node_noprof+0x2e5/0x8e0
[ 236.356915][ T2842] alloc_netdev_mqs+0x7d/0x1370
[ 236.357092][ T2842] rtnl_create_link+0xa9e/0xe20
[ 236.357270][ T2842] rtnl_newlink_create+0x203/0x770
[ 236.357474][ T2842] __rtnl_newlink+0x231/0xa30
[ 236.357663][ T2842] rtnl_newlink+0x693/0xa60
[ 236.357858][ T2842] rtnetlink_rcv_msg+0x709/0xc00
[ 236.358079][ T2842] netlink_rcv_skb+0x121/0x340
[ 236.358256][ T2842] netlink_unicast+0x4aa/0x780
[ 236.358445][ T2842] netlink_sendmsg+0x714/0xbd0
[ 236.358627][ T2842] ____sys_sendmsg+0x3dd/0x890
[ 236.358815][ T2842] ___sys_sendmsg+0xed/0x170
[ 236.359015][ T2842] __sys_sendmsg+0x10b/0x1a0
[ 236.359186][ T2842] do_syscall_64+0xc1/0xfd0
[ 236.359397][ T2842] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 236.359640][ T2842]
[ 236.359728][ T2842] Freed by task 2842:
[ 236.359875][ T2842] kasan_save_stack+0x24/0x40
[ 236.360080][ T2842] kasan_save_track+0x14/0x30
[ 236.360247][ T2842] __kasan_save_free_info+0x3b/0x60
[ 236.360440][ T2842] __kasan_slab_free+0x3f/0x60
[ 236.360622][ T2842] kfree+0x21d/0x540
[ 236.360749][ T2842] device_release+0x9c/0x210
[ 236.360936][ T2842] kobject_cleanup+0xfe/0x360
[ 236.361122][ T2842] netdev_run_todo+0x81f/0xc60
[ 236.361301][ T2842] rtnl_dellink+0x350/0xa30
[ 236.361478][ T2842] rtnetlink_rcv_msg+0x709/0xc00
[ 236.361659][ T2842] netlink_rcv_skb+0x121/0x340
[ 236.361838][ T2842] netlink_unicast+0x4aa/0x780
[ 236.362048][ T2842] netlink_sendmsg+0x714/0xbd0
[ 236.362217][ T2842] ____sys_sendmsg+0x3dd/0x890
[ 236.362427][ T2842] ___sys_sendmsg+0xed/0x170
[ 236.362628][ T2842] __sys_sendmsg+0x10b/0x1a0
[ 236.362814][ T2842] do_syscall_64+0xc1/0xfd0
[ 236.363007][ T2842] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 236.363219][ T2842]
[ 236.363322][ T2842] The buggy address belongs to the object at ffff888004bec000
[ 236.363322][ T2842] which belongs to the cache kmalloc-4k of size 4096
[ 236.363811][ T2842] The buggy address is located 1708 bytes inside of
[ 236.363811][ T2842] freed 4096-byte region [ffff888004bec000, ffff888004bed000)
[ 236.364331][ T2842]
[ 236.364438][ T2842] The buggy address belongs to the physical page:
[ 236.364678][ T2842] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x4be8
[ 236.365032][ T2842] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[ 236.365327][ T2842] flags: 0x80000000000040(head|node=0|zone=1)
[ 236.365591][ T2842] page_type: f5(slab)
[ 236.365735][ T2842] raw: 0080000000000040 ffff888001043700 ffffea00002df810 ffffea0000207810
[ 236.366088][ T2842] raw: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 236.366429][ T2842] head: 0080000000000040 ffff888001043700 ffffea00002df810 ffffea0000207810
[ 236.366783][ T2842] head: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 236.367129][ T2842] head: 0080000000000003 ffffea000012fa01 00000000ffffffff 00000000ffffffff
[ 236.367469][ T2842] head: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
[ 236.367816][ T2842] page dumped because: kasan: bad access detected
[ 236.368064][ T2842]
[ 236.368162][ T2842] Memory state around the buggy address:
[ 236.368364][ T2842] ffff888004bec580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 236.368667][ T2842] ffff888004bec600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 236.368979][ T2842] >ffff888004bec680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 236.369223][ T2842] ^
[ 236.369419][ T2842] ffff888004bec700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 236.369681][ T2842] ffff888004bec780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 236.369974][ T2842] ==================================================================
[ 236.370370][ T2842] Disabling lock debugging due to kernel taint
[ 236.370624][ T2842] ------------[ cut here ]------------
[ 236.370808][ T2842] refcount_t: underflow; use-after-free.
[ 236.371111][ T2842] WARNING: CPU: 1 PID: 2842 at lib/refcount.c:28 refcount_warn_saturate+0x16f/0x1b0
[ 236.371550][ T2842] Modules linked in: vrf veth
[ 236.371813][ T2842] CPU: 1 UID: 0 PID: 2842 Comm: ip Tainted: G B 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 236.372334][ T2842] Tainted: [B]=BAD_PAGE
[ 236.372515][ T2842] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 236.372828][ T2842] RIP: 0010:refcount_warn_saturate+0x16f/0x1b0
[ 236.373180][ T2842] 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 85 a3 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
[ 236.374168][ T2842] RSP: 0018:ffffc90003b571f0 EFLAGS: 00010286
[ 236.374496][ T2842] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[ 236.374864][ T2842] RDX: 0000000000000002 RSI: 0000000000000004 RDI: 0000000000000001
[ 236.375255][ T2842] RBP: 0000000000000003 R08: 0000000000000000 R09: fffffbfff483e134
[ 236.375661][ T2842] R10: 0000000000000003 R11: ffffc90003b56d80 R12: 0000000000000001
[ 236.376143][ T2842] R13: dffffc0000000000 R14: dead000000000122 R15: dead000000000100
[ 236.376538][ T2842] FS: 00007f90f4b96800(0000) GS:ffff888090c72000(0000) knlGS:0000000000000000
[ 236.377019][ T2842] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 236.377397][ T2842] CR2: 00007fd97833d000 CR3: 000000000e9a0004 CR4: 0000000000772ef0
[ 236.377816][ T2842] PKRU: 55555554
[ 236.378034][ T2842] Call Trace:
[ 236.378251][ T2842]
[ 236.378372][ T2842] netdev_run_todo+0x5f0/0xc60
[ 236.378666][ T2842] ? dev_ingress_queue_create+0x190/0x190
[ 236.378964][ T2842] ? generic_xdp_install+0x410/0x410
[ 236.379265][ T2842] ? vrf_dellink+0xff/0x150 [vrf]
[ 236.379562][ T2842] ? vrf_map_unregister_dev+0x480/0x480 [vrf]
[ 236.379946][ T2842] ? __lock_acquire+0x449/0x7e0
[ 236.380223][ T2842] rtnl_dellink+0x350/0xa30
[ 236.380472][ T2842] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 236.380825][ T2842] ? find_held_lock+0x2b/0x80
[ 236.381096][ T2842] ? __lock_acquire+0x449/0x7e0
[ 236.381365][ T2842] ? find_held_lock+0x2b/0x80
[ 236.381622][ T2842] ? rtnetlink_rcv_msg+0x6e6/0xc00
[ 236.381888][ T2842] ? __lock_release+0x5d/0x170
[ 236.382168][ T2842] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 236.382503][ T2842] rtnetlink_rcv_msg+0x709/0xc00
[ 236.382776][ T2842] ? rtnl_port_fill+0x850/0x850
[ 236.383056][ T2842] ? __lock_acquire+0x449/0x7e0
[ 236.383323][ T2842] netlink_rcv_skb+0x121/0x340
[ 236.383661][ T2842] ? rtnl_port_fill+0x850/0x850
[ 236.383946][ T2842] ? netlink_ack+0xdd0/0xdd0
[ 236.384206][ T2842] ? netlink_deliver_tap+0x13e/0x340
[ 236.384470][ T2842] ? netlink_deliver_tap+0xc3/0x340
[ 236.384737][ T2842] netlink_unicast+0x4aa/0x780
[ 236.385057][ T2842] ? netlink_attachskb+0x810/0x810
[ 236.385327][ T2842] ? __lock_acquire+0x449/0x7e0
[ 236.385578][ T2842] netlink_sendmsg+0x714/0xbd0
[ 236.385859][ T2842] ? netlink_unicast+0x780/0x780
[ 236.386188][ T2842] ? __import_iovec+0x230/0x3b0
[ 236.386462][ T2842] ? netlink_unicast+0x780/0x780
[ 236.386719][ T2842] ____sys_sendmsg+0x3dd/0x890
[ 236.387000][ T2842] ? get_timestamp.constprop.0+0x380/0x380
[ 236.387334][ T2842] ? __copy_msghdr+0x3c0/0x3c0
[ 236.387596][ T2842] ___sys_sendmsg+0xed/0x170
[ 236.387842][ T2842] ? kasan_record_aux_stack+0x8c/0xa0
[ 236.388122][ T2842] ? __call_rcu_common.constprop.0+0xa8/0x630
[ 236.388469][ T2842] ? copy_msghdr_from_user+0x110/0x110
[ 236.388735][ T2842] ? find_held_lock+0x2b/0x80
[ 236.389003][ T2842] ? __lock_acquire+0x449/0x7e0
[ 236.389275][ T2842] ? find_held_lock+0x2b/0x80
[ 236.389540][ T2842] ? __virt_addr_valid+0x22a/0x450
[ 236.389804][ T2842] ? __lock_release+0x5d/0x170
[ 236.390088][ T2842] __sys_sendmsg+0x10b/0x1a0
[ 236.390373][ T2842] ? __call_rcu_common.constprop.0+0x318/0x630
[ 236.390699][ T2842] ? __sys_sendmsg_sock+0x20/0x20
[ 236.390985][ T2842] ? rcu_is_watching+0x12/0xb0
[ 236.391252][ T2842] do_syscall_64+0xc1/0xfd0
[ 236.391573][ T2842] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 236.391907][ T2842] RIP: 0033:0x7f90f4d641d7
[ 236.392195][ T2842] 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
[ 236.393462][ T2842] RSP: 002b:00007fff81f9e3a8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 236.393900][ T2842] RAX: ffffffffffffffda RBX: 00007fff81f9ead0 RCX: 00007f90f4d641d7
[ 236.394494][ T2842] RDX: 0000000000000000 RSI: 00007fff81f9e410 RDI: 0000000000000005
[ 236.394909][ T2842] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078
[ 236.395488][ T2842] R10: 00007f90f4c60f60 R11: 0000000000000246 R12: 0000000000000002
[ 236.395890][ T2842] R13: 00000000690de9ab R14: 0000000000499600 R15: 0000000000000000
[ 236.396348][ T2842]
[ 236.396555][ T2842] irq event stamp: 42937
[ 236.396949][ T2842] hardirqs last enabled at (42937): [] kasan_quarantine_put+0xf9/0x210
[ 236.397434][ T2842] hardirqs last disabled at (42936): [] kasan_quarantine_put+0xac/0x210
[ 236.398008][ T2842] softirqs last enabled at (42772): [] handle_softirqs+0x352/0x610
[ 236.398468][ T2842] softirqs last disabled at (42763): [] irq_exit_rcu+0xab/0x100
[ 236.398902][ T2842] ---[ end trace 0000000000000000 ]---