[ 60.278089][ T486] ==================================================================
[ 60.278526][ T486] BUG: KASAN: slab-use-after-free in kobject_put+0xbb/0xd0
[ 60.278863][ T486] Read of size 1 at addr ffff8880074e46ac by task ip/486
[ 60.279107][ T486]
[ 60.279207][ T486] CPU: 0 UID: 0 PID: 486 Comm: ip Not tainted 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 60.279213][ T486] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 60.279217][ T486] Call Trace:
[ 60.279222][ T486]
[ 60.279225][ T486] dump_stack_lvl+0x82/0xc0
[ 60.279233][ T486] print_address_description.constprop.0+0x2c/0x3a0
[ 60.279244][ T486] ? kobject_put+0xbb/0xd0
[ 60.279250][ T486] print_report+0xb4/0x270
[ 60.279254][ T486] ? kobject_put+0xbb/0xd0
[ 60.279260][ T486] ? kasan_addr_to_slab+0x21/0x70
[ 60.279264][ T486] ? kobject_put+0xbb/0xd0
[ 60.279268][ T486] kasan_report+0xca/0x100
[ 60.279274][ T486] ? kobject_put+0xbb/0xd0
[ 60.279279][ T486] kobject_put+0xbb/0xd0
[ 60.279283][ T486] netdev_run_todo+0x5f0/0xc60
[ 60.279292][ T486] ? dev_ingress_queue_create+0x190/0x190
[ 60.279295][ T486] ? generic_xdp_install+0x410/0x410
[ 60.279299][ T486] ? vrf_dellink+0xff/0x150 [vrf]
[ 60.279307][ T486] ? vrf_map_unregister_dev+0x480/0x480 [vrf]
[ 60.279311][ T486] ? __lock_acquire+0x449/0x7e0
[ 60.279322][ T486] rtnl_dellink+0x350/0xa30
[ 60.279327][ T486] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 60.279347][ T486] ? find_held_lock+0x2b/0x80
[ 60.279351][ T486] ? __lock_acquire+0x449/0x7e0
[ 60.279357][ T486] ? find_held_lock+0x2b/0x80
[ 60.279361][ T486] ? rtnetlink_rcv_msg+0x6e6/0xc00
[ 60.279364][ T486] ? __lock_release+0x5d/0x170
[ 60.279368][ T486] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 60.279372][ T486] rtnetlink_rcv_msg+0x709/0xc00
[ 60.279375][ T486] ? rtnl_port_fill+0x850/0x850
[ 60.279378][ T486] ? __lock_acquire+0x449/0x7e0
[ 60.279385][ T486] netlink_rcv_skb+0x121/0x340
[ 60.279391][ T486] ? rtnl_port_fill+0x850/0x850
[ 60.279394][ T486] ? netlink_ack+0xdd0/0xdd0
[ 60.279401][ T486] ? netlink_deliver_tap+0x13e/0x340
[ 60.279404][ T486] ? netlink_deliver_tap+0xc3/0x340
[ 60.279407][ T486] netlink_unicast+0x4aa/0x780
[ 60.279411][ T486] ? netlink_attachskb+0x810/0x810
[ 60.279415][ T486] ? __lock_acquire+0x449/0x7e0
[ 60.279421][ T486] netlink_sendmsg+0x714/0xbd0
[ 60.279425][ T486] ? netlink_unicast+0x780/0x780
[ 60.279429][ T486] ? __import_iovec+0x230/0x3b0
[ 60.279438][ T486] ? netlink_unicast+0x780/0x780
[ 60.279442][ T486] ____sys_sendmsg+0x3dd/0x890
[ 60.279453][ T486] ? get_timestamp.constprop.0+0x380/0x380
[ 60.279457][ T486] ? __copy_msghdr+0x3c0/0x3c0
[ 60.279471][ T486] ___sys_sendmsg+0xed/0x170
[ 60.279476][ T486] ? kasan_record_aux_stack+0x8c/0xa0
[ 60.279480][ T486] ? __call_rcu_common.constprop.0+0xa8/0x630
[ 60.279494][ T486] ? copy_msghdr_from_user+0x110/0x110
[ 60.279502][ T486] ? find_held_lock+0x2b/0x80
[ 60.279508][ T486] ? __lock_acquire+0x449/0x7e0
[ 60.279518][ T486] ? find_held_lock+0x2b/0x80
[ 60.279523][ T486] ? __virt_addr_valid+0x22a/0x450
[ 60.279530][ T486] ? __lock_release+0x5d/0x170
[ 60.279539][ T486] __sys_sendmsg+0x10b/0x1a0
[ 60.279542][ T486] ? __call_rcu_common.constprop.0+0x318/0x630
[ 60.279546][ T486] ? __sys_sendmsg_sock+0x20/0x20
[ 60.279554][ T486] ? rcu_is_watching+0x12/0xb0
[ 60.279558][ T486] do_syscall_64+0xc1/0xfd0
[ 60.279564][ T486] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 60.279573][ T486] RIP: 0033:0x7fd1d0fdd1d7
[ 60.279577][ T486] 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
[ 60.279581][ T486] RSP: 002b:00007ffdee48d428 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 60.279590][ T486] RAX: ffffffffffffffda RBX: 00007ffdee48db50 RCX: 00007fd1d0fdd1d7
[ 60.279593][ T486] RDX: 0000000000000000 RSI: 00007ffdee48d490 RDI: 0000000000000005
[ 60.279596][ T486] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078
[ 60.279598][ T486] R10: 00007fd1d0ed9f60 R11: 0000000000000246 R12: 0000000000000002
[ 60.279601][ T486] R13: 00000000690dee0f R14: 0000000000499600 R15: 0000000000000000
[ 60.279609][ T486]
[ 60.279611][ T486]
[ 60.299378][ T486] Allocated by task 308:
[ 60.299570][ T486] kasan_save_stack+0x24/0x40
[ 60.299842][ T486] kasan_save_track+0x14/0x30
[ 60.300167][ T486] __kasan_kmalloc+0x7b/0x90
[ 60.300360][ T486] __kvmalloc_node_noprof+0x2e5/0x8e0
[ 60.300568][ T486] alloc_netdev_mqs+0x7d/0x1370
[ 60.300765][ T486] rtnl_create_link+0xa9e/0xe20
[ 60.301098][ T486] rtnl_newlink_create+0x203/0x770
[ 60.301370][ T486] __rtnl_newlink+0x231/0xa30
[ 60.301639][ T486] rtnl_newlink+0x693/0xa60
[ 60.301938][ T486] rtnetlink_rcv_msg+0x709/0xc00
[ 60.302449][ T486] netlink_rcv_skb+0x121/0x340
[ 60.302729][ T486] netlink_unicast+0x4aa/0x780
[ 60.303028][ T486] netlink_sendmsg+0x714/0xbd0
[ 60.303224][ T486] ____sys_sendmsg+0x3dd/0x890
[ 60.303448][ T486] ___sys_sendmsg+0xed/0x170
[ 60.303671][ T486] __sys_sendmsg+0x10b/0x1a0
[ 60.303870][ T486] do_syscall_64+0xc1/0xfd0
[ 60.304066][ T486] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 60.304402][ T486]
[ 60.304521][ T486] Freed by task 486:
[ 60.304703][ T486] kasan_save_stack+0x24/0x40
[ 60.304911][ T486] kasan_save_track+0x14/0x30
[ 60.305205][ T486] __kasan_save_free_info+0x3b/0x60
[ 60.305704][ T486] __kasan_slab_free+0x3f/0x60
[ 60.306022][ T486] kfree+0x21d/0x540
[ 60.306259][ T486] device_release+0x9c/0x210
[ 60.306579][ T486] kobject_cleanup+0xfe/0x360
[ 60.306880][ T486] netdev_run_todo+0x81f/0xc60
[ 60.307461][ T486] rtnl_dellink+0x350/0xa30
[ 60.307684][ T486] rtnetlink_rcv_msg+0x709/0xc00
[ 60.307873][ T486] netlink_rcv_skb+0x121/0x340
[ 60.308166][ T486] netlink_unicast+0x4aa/0x780
[ 60.308370][ T486] netlink_sendmsg+0x714/0xbd0
[ 60.308665][ T486] ____sys_sendmsg+0x3dd/0x890
[ 60.308971][ T486] ___sys_sendmsg+0xed/0x170
[ 60.309652][ T486] __sys_sendmsg+0x10b/0x1a0
[ 60.309945][ T486] do_syscall_64+0xc1/0xfd0
[ 60.310254][ T486] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 60.310632][ T486]
[ 60.311160][ T486] The buggy address belongs to the object at ffff8880074e4000
[ 60.311160][ T486] which belongs to the cache kmalloc-4k of size 4096
[ 60.311932][ T486] The buggy address is located 1708 bytes inside of
[ 60.311932][ T486] freed 4096-byte region [ffff8880074e4000, ffff8880074e5000)
[ 60.312857][ T486]
[ 60.313003][ T486] The buggy address belongs to the physical page:
[ 60.313300][ T486] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x74e0
[ 60.313772][ T486] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[ 60.314060][ T486] flags: 0x80000000000040(head|node=0|zone=1)
[ 60.314328][ T486] page_type: f5(slab)
[ 60.314619][ T486] raw: 0080000000000040 ffff888001043700 ffffea000022de10 ffffea00001bd410
[ 60.315058][ T486] raw: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 60.315396][ T486] head: 0080000000000040 ffff888001043700 ffffea000022de10 ffffea00001bd410
[ 60.315987][ T486] head: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 60.316316][ T486] head: 0080000000000003 ffffea00001d3801 00000000ffffffff 00000000ffffffff
[ 60.316757][ T486] head: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
[ 60.317197][ T486] page dumped because: kasan: bad access detected
[ 60.317556][ T486]
[ 60.317693][ T486] Memory state around the buggy address:
[ 60.317943][ T486] ffff8880074e4580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 60.318487][ T486] ffff8880074e4600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 60.318869][ T486] >ffff8880074e4680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 60.319251][ T486] ^
[ 60.319657][ T486] ffff8880074e4700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 60.320039][ T486] ffff8880074e4780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 60.320408][ T486] ==================================================================
[ 60.321243][ T486] Disabling lock debugging due to kernel taint
[ 60.321645][ T486] ------------[ cut here ]------------
[ 60.321924][ T486] refcount_t: underflow; use-after-free.
[ 60.322241][ T486] WARNING: CPU: 3 PID: 486 at lib/refcount.c:28 refcount_warn_saturate+0x16f/0x1b0
[ 60.322750][ T486] Modules linked in: vrf veth
[ 60.323061][ T486] CPU: 3 UID: 0 PID: 486 Comm: ip Tainted: G B 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 60.323631][ T486] Tainted: [B]=BAD_PAGE
[ 60.323856][ T486] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 60.324198][ T486] RIP: 0010:refcount_warn_saturate+0x16f/0x1b0
[ 60.324579][ T486] 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 85 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
[ 60.325810][ T486] RSP: 0018:ffffc90000cc71f0 EFLAGS: 00010286
[ 60.326164][ T486] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[ 60.326816][ T486] RDX: 0000000000000002 RSI: 0000000000000004 RDI: 0000000000000001
[ 60.327451][ T486] RBP: 0000000000000003 R08: 0000000000000000 R09: fffffbfff0cbe134
[ 60.327894][ T486] R10: 0000000000000003 R11: ffffc90000cc6d80 R12: 0000000000000001
[ 60.328352][ T486] R13: dffffc0000000000 R14: dead000000000122 R15: dead000000000100
[ 60.328828][ T486] FS: 00007fd1d0e0f800(0000) GS:ffff8880ae972000(0000) knlGS:0000000000000000
[ 60.329437][ T486] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 60.329811][ T486] CR2: 000055c7277addec CR3: 0000000008c52006 CR4: 0000000000772ef0
[ 60.330362][ T486] PKRU: 55555554
[ 60.330617][ T486] Call Trace:
[ 60.330829][ T486]
[ 60.330988][ T486] netdev_run_todo+0x5f0/0xc60
[ 60.331304][ T486] ? dev_ingress_queue_create+0x190/0x190
[ 60.331633][ T486] ? generic_xdp_install+0x410/0x410
[ 60.331934][ T486] ? vrf_dellink+0xff/0x150 [vrf]
[ 60.332222][ T486] ? vrf_map_unregister_dev+0x480/0x480 [vrf]
[ 60.332574][ T486] ? __lock_acquire+0x449/0x7e0
[ 60.332857][ T486] rtnl_dellink+0x350/0xa30
[ 60.333192][ T486] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 60.333579][ T486] ? find_held_lock+0x2b/0x80
[ 60.333874][ T486] ? __lock_acquire+0x449/0x7e0
[ 60.334337][ T486] ? find_held_lock+0x2b/0x80
[ 60.334631][ T486] ? rtnetlink_rcv_msg+0x6e6/0xc00
[ 60.334909][ T486] ? __lock_release+0x5d/0x170
[ 60.335183][ T486] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 60.335748][ T486] rtnetlink_rcv_msg+0x709/0xc00
[ 60.336040][ T486] ? rtnl_port_fill+0x850/0x850
[ 60.336356][ T486] ? __lock_acquire+0x449/0x7e0
[ 60.336664][ T486] netlink_rcv_skb+0x121/0x340
[ 60.336951][ T486] ? rtnl_port_fill+0x850/0x850
[ 60.337238][ T486] ? netlink_ack+0xdd0/0xdd0
[ 60.337537][ T486] ? netlink_deliver_tap+0x13e/0x340
[ 60.337981][ T486] ? netlink_deliver_tap+0xc3/0x340
[ 60.338280][ T486] netlink_unicast+0x4aa/0x780
[ 60.338577][ T486] ? netlink_attachskb+0x810/0x810
[ 60.338864][ T486] ? __lock_acquire+0x449/0x7e0
[ 60.339306][ T486] netlink_sendmsg+0x714/0xbd0
[ 60.339612][ T486] ? netlink_unicast+0x780/0x780
[ 60.339891][ T486] ? __import_iovec+0x230/0x3b0
[ 60.340178][ T486] ? netlink_unicast+0x780/0x780
[ 60.340671][ T486] ____sys_sendmsg+0x3dd/0x890
[ 60.340993][ T486] ? get_timestamp.constprop.0+0x380/0x380
[ 60.341351][ T486] ? __copy_msghdr+0x3c0/0x3c0
[ 60.341661][ T486] ___sys_sendmsg+0xed/0x170
[ 60.342127][ T486] ? kasan_record_aux_stack+0x8c/0xa0
[ 60.342420][ T486] ? __call_rcu_common.constprop.0+0xa8/0x630
[ 60.342796][ T486] ? copy_msghdr_from_user+0x110/0x110
[ 60.343100][ T486] ? find_held_lock+0x2b/0x80
[ 60.343586][ T486] ? __lock_acquire+0x449/0x7e0
[ 60.343880][ T486] ? find_held_lock+0x2b/0x80
[ 60.344175][ T486] ? __virt_addr_valid+0x22a/0x450
[ 60.344464][ T486] ? __lock_release+0x5d/0x170
[ 60.344765][ T486] __sys_sendmsg+0x10b/0x1a0
[ 60.345057][ T486] ? __call_rcu_common.constprop.0+0x318/0x630
[ 60.345630][ T486] ? __sys_sendmsg_sock+0x20/0x20
[ 60.345943][ T486] ? rcu_is_watching+0x12/0xb0
[ 60.346229][ T486] do_syscall_64+0xc1/0xfd0
[ 60.346516][ T486] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 60.346886][ T486] RIP: 0033:0x7fd1d0fdd1d7
[ 60.347206][ T486] 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
[ 60.348260][ T486] RSP: 002b:00007ffdee48d428 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 60.348915][ T486] RAX: ffffffffffffffda RBX: 00007ffdee48db50 RCX: 00007fd1d0fdd1d7
[ 60.349401][ T486] RDX: 0000000000000000 RSI: 00007ffdee48d490 RDI: 0000000000000005
[ 60.350054][ T486] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078
[ 60.350512][ T486] R10: 00007fd1d0ed9f60 R11: 0000000000000246 R12: 0000000000000002
[ 60.350966][ T486] R13: 00000000690dee0f R14: 0000000000499600 R15: 0000000000000000
[ 60.351614][ T486]
[ 60.351840][ T486] irq event stamp: 41277
[ 60.352062][ T486] hardirqs last enabled at (41277): [] finish_task_switch.isra.0+0x245/0x960
[ 60.352649][ T486] hardirqs last disabled at (41276): [] __schedule+0x94a/0x1b10
[ 60.353169][ T486] softirqs last enabled at (41064): [] handle_softirqs+0x352/0x610
[ 60.353684][ T486] softirqs last disabled at (41057): [] irq_exit_rcu+0xab/0x100
[ 60.354372][ T486] ---[ end trace 0000000000000000 ]---