[ 15.153928][ T249] ip (249) used greatest stack depth: 24656 bytes left
[ 15.747892][ T263] ip (263) used greatest stack depth: 23952 bytes left
[ 22.575988][ T330] 8021q: 802.1Q VLAN Support v1.8
[ 23.229450][ T336] gre: GRE over IPv4 demultiplexer driver
[ 23.247227][ T336] ip_gre: GRE over IPv4 tunneling driver
[ 38.957476][ T439] ==================================================================
[ 38.957805][ T439] BUG: KASAN: slab-use-after-free in kobject_put+0xbb/0xd0
[ 38.958099][ T439] Read of size 1 at addr ffff88800bb946ac by task ip/439
[ 38.958335][ T439]
[ 38.958431][ T439] CPU: 0 UID: 0 PID: 439 Comm: ip Not tainted 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 38.958436][ T439] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 38.958439][ T439] Call Trace:
[ 38.958444][ T439]
[ 38.958446][ T439] dump_stack_lvl+0x82/0xc0
[ 38.958452][ T439] print_address_description.constprop.0+0x2c/0x3a0
[ 38.958459][ T439] ? kobject_put+0xbb/0xd0
[ 38.958463][ T439] print_report+0xb4/0x270
[ 38.958466][ T439] ? kobject_put+0xbb/0xd0
[ 38.958470][ T439] ? kasan_addr_to_slab+0x21/0x70
[ 38.958473][ T439] ? kobject_put+0xbb/0xd0
[ 38.958476][ T439] kasan_report+0xca/0x100
[ 38.958480][ T439] ? kobject_put+0xbb/0xd0
[ 38.958486][ T439] kobject_put+0xbb/0xd0
[ 38.958490][ T439] netdev_run_todo+0x5f0/0xc60
[ 38.958497][ T439] ? dev_ingress_queue_create+0x190/0x190
[ 38.958500][ T439] ? generic_xdp_install+0x410/0x410
[ 38.958503][ T439] ? unregister_netdevice_many+0x20/0x20
[ 38.958506][ T439] ? net_generic+0xb1/0x1f0
[ 38.958514][ T439] ? net_generic+0xbb/0x1f0
[ 38.958518][ T439] rtnl_dellink+0x350/0xa30
[ 38.958524][ T439] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 38.958543][ T439] ? find_held_lock+0x2b/0x80
[ 38.958551][ T439] ? __lock_acquire+0x449/0x7e0
[ 38.958557][ T439] ? find_held_lock+0x2b/0x80
[ 38.958561][ T439] ? rtnetlink_rcv_msg+0x6e6/0xc00
[ 38.958564][ T439] ? __lock_release+0x5d/0x170
[ 38.958568][ T439] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 38.958571][ T439] rtnetlink_rcv_msg+0x709/0xc00
[ 38.958575][ T439] ? rtnl_port_fill+0x850/0x850
[ 38.958578][ T439] ? __lock_acquire+0x449/0x7e0
[ 38.958585][ T439] netlink_rcv_skb+0x121/0x340
[ 38.958592][ T439] ? rtnl_port_fill+0x850/0x850
[ 38.958596][ T439] ? netlink_ack+0xdd0/0xdd0
[ 38.958602][ T439] ? netlink_deliver_tap+0x13e/0x340
[ 38.958605][ T439] ? netlink_deliver_tap+0xc3/0x340
[ 38.958609][ T439] netlink_unicast+0x4aa/0x780
[ 38.958613][ T439] ? netlink_attachskb+0x810/0x810
[ 38.958617][ T439] ? __lock_acquire+0x449/0x7e0
[ 38.958623][ T439] netlink_sendmsg+0x714/0xbd0
[ 38.958627][ T439] ? netlink_unicast+0x780/0x780
[ 38.958631][ T439] ? __import_iovec+0x230/0x3b0
[ 38.958638][ T439] ? netlink_unicast+0x780/0x780
[ 38.958642][ T439] ____sys_sendmsg+0x3dd/0x890
[ 38.958649][ T439] ? get_timestamp.constprop.0+0x380/0x380
[ 38.958652][ T439] ? __copy_msghdr+0x3c0/0x3c0
[ 38.958660][ T439] ___sys_sendmsg+0xed/0x170
[ 38.958663][ T439] ? kasan_record_aux_stack+0x8c/0xa0
[ 38.958666][ T439] ? __call_rcu_common.constprop.0+0xa8/0x630
[ 38.958672][ T439] ? copy_msghdr_from_user+0x110/0x110
[ 38.958677][ T439] ? find_held_lock+0x2b/0x80
[ 38.958682][ T439] ? __lock_acquire+0x449/0x7e0
[ 38.958688][ T439] ? find_held_lock+0x2b/0x80
[ 38.958691][ T439] ? __virt_addr_valid+0x22a/0x450
[ 38.958697][ T439] ? __lock_release+0x5d/0x170
[ 38.958703][ T439] __sys_sendmsg+0x10b/0x1a0
[ 38.958706][ T439] ? __call_rcu_common.constprop.0+0x318/0x630
[ 38.958710][ T439] ? __sys_sendmsg_sock+0x20/0x20
[ 38.958717][ T439] ? rcu_is_watching+0x12/0xb0
[ 38.958721][ T439] do_syscall_64+0xc1/0xfd0
[ 38.958727][ T439] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 38.958732][ T439] RIP: 0033:0x7ff140bab1d7
[ 38.958740][ T439] 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
[ 38.958743][ T439] RSP: 002b:00007fffb8d01268 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 38.958747][ T439] RAX: ffffffffffffffda RBX: 00007fffb8d01990 RCX: 00007ff140bab1d7
[ 38.958750][ T439] RDX: 0000000000000000 RSI: 00007fffb8d012d0 RDI: 0000000000000005
[ 38.958752][ T439] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078
[ 38.958753][ T439] R10: 00007ff140aa7f60 R11: 0000000000000246 R12: 0000000000000002
[ 38.958755][ T439] R13: 00000000690dfa70 R14: 0000000000499600 R15: 0000000000000000
[ 38.958762][ T439]
[ 38.958764][ T439]
[ 38.972531][ T439] Allocated by task 371:
[ 38.972673][ T439] kasan_save_stack+0x24/0x40
[ 38.972866][ T439] kasan_save_track+0x14/0x30
[ 38.973052][ T439] __kasan_kmalloc+0x7b/0x90
[ 38.973250][ T439] __kvmalloc_node_noprof+0x2e5/0x8e0
[ 38.973453][ T439] alloc_netdev_mqs+0x7d/0x1370
[ 38.973638][ T439] rtnl_create_link+0xa9e/0xe20
[ 38.973822][ T439] rtnl_newlink_create+0x203/0x770
[ 38.974009][ T439] __rtnl_newlink+0x231/0xa30
[ 38.974195][ T439] rtnl_newlink+0x693/0xa60
[ 38.974382][ T439] rtnetlink_rcv_msg+0x709/0xc00
[ 38.974563][ T439] netlink_rcv_skb+0x121/0x340
[ 38.974754][ T439] netlink_unicast+0x4aa/0x780
[ 38.974936][ T439] netlink_sendmsg+0x714/0xbd0
[ 38.975118][ T439] ____sys_sendmsg+0x3dd/0x890
[ 38.975323][ T439] ___sys_sendmsg+0xed/0x170
[ 38.975506][ T439] __sys_sendmsg+0x10b/0x1a0
[ 38.975690][ T439] do_syscall_64+0xc1/0xfd0
[ 38.975878][ T439] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 38.976118][ T439]
[ 38.976238][ T439] Freed by task 439:
[ 38.976379][ T439] kasan_save_stack+0x24/0x40
[ 38.976566][ T439] kasan_save_track+0x14/0x30
[ 38.976752][ T439] __kasan_save_free_info+0x3b/0x60
[ 38.976938][ T439] __kasan_slab_free+0x3f/0x60
[ 38.977127][ T439] kfree+0x21d/0x540
[ 38.977296][ T439] device_release+0x9c/0x210
[ 38.977488][ T439] kobject_cleanup+0xfe/0x360
[ 38.977681][ T439] netdev_run_todo+0x81f/0xc60
[ 38.977863][ T439] rtnl_dellink+0x350/0xa30
[ 38.978057][ T439] rtnetlink_rcv_msg+0x709/0xc00
[ 38.978261][ T439] netlink_rcv_skb+0x121/0x340
[ 38.978444][ T439] netlink_unicast+0x4aa/0x780
[ 38.978626][ T439] netlink_sendmsg+0x714/0xbd0
[ 38.978805][ T439] ____sys_sendmsg+0x3dd/0x890
[ 38.978993][ T439] ___sys_sendmsg+0xed/0x170
[ 38.979209][ T439] __sys_sendmsg+0x10b/0x1a0
[ 38.979395][ T439] do_syscall_64+0xc1/0xfd0
[ 38.979584][ T439] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 38.979813][ T439]
[ 38.979907][ T439] The buggy address belongs to the object at ffff88800bb94000
[ 38.979907][ T439] which belongs to the cache kmalloc-4k of size 4096
[ 38.980386][ T439] The buggy address is located 1708 bytes inside of
[ 38.980386][ T439] freed 4096-byte region [ffff88800bb94000, ffff88800bb95000)
[ 38.980837][ T439]
[ 38.980937][ T439] The buggy address belongs to the physical page:
[ 38.981186][ T439] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xbb90
[ 38.981525][ T439] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[ 38.981810][ T439] flags: 0x80000000000040(head|node=0|zone=1)
[ 38.982060][ T439] page_type: f5(slab)
[ 38.982221][ T439] raw: 0080000000000040 ffff888001043700 ffffea000022a210 ffffea0000175c10
[ 38.982560][ T439] raw: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 38.982881][ T439] head: 0080000000000040 ffff888001043700 ffffea000022a210 ffffea0000175c10
[ 38.983249][ T439] head: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 38.983585][ T439] head: 0080000000000003 ffffea00002ee401 00000000ffffffff 00000000ffffffff
[ 38.983904][ T439] head: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
[ 38.984255][ T439] page dumped because: kasan: bad access detected
[ 38.984481][ T439]
[ 38.984573][ T439] Memory state around the buggy address:
[ 38.984762][ T439] ffff88800bb94580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 38.985030][ T439] ffff88800bb94600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 38.985305][ T439] >ffff88800bb94680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 38.985568][ T439] ^
[ 38.985749][ T439] ffff88800bb94700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 38.986023][ T439] ffff88800bb94780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 38.986299][ T439] ==================================================================
[ 38.986732][ T439] Disabling lock debugging due to kernel taint
[ 38.987289][ T439] ------------[ cut here ]------------
[ 38.987560][ T439] refcount_t: underflow; use-after-free.
[ 38.987896][ T439] WARNING: CPU: 1 PID: 439 at lib/refcount.c:28 refcount_warn_saturate+0x16f/0x1b0
[ 38.988393][ T439] Modules linked in: ip_gre gre 8021q dummy vrf veth
[ 38.988770][ T439] CPU: 1 UID: 0 PID: 439 Comm: ip Tainted: G B 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 38.989349][ T439] Tainted: [B]=BAD_PAGE
[ 38.989575][ T439] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 38.989953][ T439] RIP: 0010:refcount_warn_saturate+0x16f/0x1b0
[ 38.990337][ T439] 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 05 9b 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
[ 38.991307][ T439] RSP: 0018:ffffc90000b771f0 EFLAGS: 00010286
[ 38.991657][ T439] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[ 38.992090][ T439] RDX: 0000000000000002 RSI: 0000000000000004 RDI: 0000000000000001
[ 38.992491][ T439] RBP: 0000000000000003 R08: 0000000000000000 R09: fffffbfff373e134
[ 38.992900][ T439] R10: 0000000000000003 R11: ffffc90000b76d80 R12: 0000000000000001
[ 38.993301][ T439] R13: dffffc0000000000 R14: dead000000000122 R15: dead000000000100
[ 38.993750][ T439] FS: 00007ff1409dd800(0000) GS:ffff888099472000(0000) knlGS:0000000000000000
[ 38.994251][ T439] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 38.994598][ T439] CR2: 00007f96f11ab000 CR3: 0000000004d63005 CR4: 0000000000772ef0
[ 38.995016][ T439] PKRU: 55555554
[ 38.995235][ T439] Call Trace:
[ 38.995456][ T439]
[ 38.995601][ T439] netdev_run_todo+0x5f0/0xc60
[ 38.995900][ T439] ? dev_ingress_queue_create+0x190/0x190
[ 38.996185][ T439] ? generic_xdp_install+0x410/0x410
[ 38.996464][ T439] ? unregister_netdevice_many+0x20/0x20
[ 38.996747][ T439] ? net_generic+0xb1/0x1f0
[ 38.997043][ T439] ? net_generic+0xbb/0x1f0
[ 38.997333][ T439] rtnl_dellink+0x350/0xa30
[ 38.997627][ T439] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 38.998009][ T439] ? find_held_lock+0x2b/0x80
[ 38.998296][ T439] ? __lock_acquire+0x449/0x7e0
[ 38.998579][ T439] ? find_held_lock+0x2b/0x80
[ 38.998861][ T439] ? rtnetlink_rcv_msg+0x6e6/0xc00
[ 38.999149][ T439] ? __lock_release+0x5d/0x170
[ 38.999439][ T439] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 38.999797][ T439] rtnetlink_rcv_msg+0x709/0xc00
[ 39.000091][ T439] ? rtnl_port_fill+0x850/0x850
[ 39.000375][ T439] ? __lock_acquire+0x449/0x7e0
[ 39.000651][ T439] netlink_rcv_skb+0x121/0x340
[ 39.000939][ T439] ? rtnl_port_fill+0x850/0x850
[ 39.001306][ T439] ? netlink_ack+0xdd0/0xdd0
[ 39.001598][ T439] ? netlink_deliver_tap+0x13e/0x340
[ 39.001896][ T439] ? netlink_deliver_tap+0xc3/0x340
[ 39.002176][ T439] netlink_unicast+0x4aa/0x780
[ 39.002458][ T439] ? netlink_attachskb+0x810/0x810
[ 39.002738][ T439] ? __lock_acquire+0x449/0x7e0
[ 39.003034][ T439] netlink_sendmsg+0x714/0xbd0
[ 39.003319][ T439] ? netlink_unicast+0x780/0x780
[ 39.003613][ T439] ? __import_iovec+0x230/0x3b0
[ 39.003913][ T439] ? netlink_unicast+0x780/0x780
[ 39.004205][ T439] ____sys_sendmsg+0x3dd/0x890
[ 39.004492][ T439] ? get_timestamp.constprop.0+0x380/0x380
[ 39.004844][ T439] ? __copy_msghdr+0x3c0/0x3c0
[ 39.005143][ T439] ___sys_sendmsg+0xed/0x170
[ 39.005421][ T439] ? kasan_record_aux_stack+0x8c/0xa0
[ 39.005706][ T439] ? __call_rcu_common.constprop.0+0xa8/0x630
[ 39.006070][ T439] ? copy_msghdr_from_user+0x110/0x110
[ 39.006362][ T439] ? find_held_lock+0x2b/0x80
[ 39.006645][ T439] ? __lock_acquire+0x449/0x7e0
[ 39.006938][ T439] ? find_held_lock+0x2b/0x80
[ 39.007222][ T439] ? __virt_addr_valid+0x22a/0x450
[ 39.007506][ T439] ? __lock_release+0x5d/0x170
[ 39.007794][ T439] __sys_sendmsg+0x10b/0x1a0
[ 39.008087][ T439] ? __call_rcu_common.constprop.0+0x318/0x630
[ 39.008451][ T439] ? __sys_sendmsg_sock+0x20/0x20
[ 39.008740][ T439] ? rcu_is_watching+0x12/0xb0
[ 39.009213][ T439] do_syscall_64+0xc1/0xfd0
[ 39.009479][ T439] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 39.009834][ T439] RIP: 0033:0x7ff140bab1d7
[ 39.010169][ T439] 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
[ 39.011327][ T439] RSP: 002b:00007fffb8d01268 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 39.011962][ T439] RAX: ffffffffffffffda RBX: 00007fffb8d01990 RCX: 00007ff140bab1d7
[ 39.012385][ T439] RDX: 0000000000000000 RSI: 00007fffb8d012d0 RDI: 0000000000000005
[ 39.012806][ T439] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078
[ 39.013410][ T439] R10: 00007ff140aa7f60 R11: 0000000000000246 R12: 0000000000000002
[ 39.013674][ T439] R13: 00000000690dfa70 R14: 0000000000499600 R15: 0000000000000000
[ 39.013946][ T439]
[ 39.014177][ T439] irq event stamp: 44733
[ 39.014310][ T439] hardirqs last enabled at (44733): [] kasan_quarantine_put+0xf9/0x210
[ 39.014624][ T439] hardirqs last disabled at (44732): [] kasan_quarantine_put+0xac/0x210
[ 39.015022][ T439] softirqs last enabled at (44566): [] handle_softirqs+0x352/0x610
[ 39.015325][ T439] softirqs last disabled at (44557): [] irq_exit_rcu+0xab/0x100
[ 39.015717][ T439] ---[ end trace 0000000000000000 ]---