[ 19.683604][ T252] ip (252) used greatest stack depth: 24128 bytes left
[ 20.502067][ T262] ip (262) used greatest stack depth: 23760 bytes left
[ 32.766721][ T359] 8021q: 802.1Q VLAN Support v1.8
[ 33.571688][ T365] gre: GRE over IPv4 demultiplexer driver
[ 33.695117][ T365] ip6_gre: GRE over IPv6 tunneling driver
[ 47.535116][ T450] GACT probability NOT on
[ 76.967779][ T663] ==================================================================
[ 76.968401][ T663] BUG: KASAN: slab-use-after-free in kobject_put+0xbb/0xd0
[ 76.968853][ T663] Read of size 1 at addr ffff888008efc6ac by task ip/663
[ 76.969241][ T663]
[ 76.969423][ T663] CPU: 0 UID: 0 PID: 663 Comm: ip Not tainted 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 76.969435][ T663] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 76.969442][ T663] Call Trace:
[ 76.969445][ T663]
[ 76.969449][ T663] dump_stack_lvl+0x82/0xc0
[ 76.969460][ T663] print_address_description.constprop.0+0x2c/0x3a0
[ 76.969474][ T663] ? kobject_put+0xbb/0xd0
[ 76.969480][ T663] print_report+0xb4/0x270
[ 76.969486][ T663] ? kobject_put+0xbb/0xd0
[ 76.969491][ T663] ? kasan_addr_to_slab+0x21/0x70
[ 76.969497][ T663] ? kobject_put+0xbb/0xd0
[ 76.969502][ T663] kasan_report+0xca/0x100
[ 76.969508][ T663] ? kobject_put+0xbb/0xd0
[ 76.969518][ T663] kobject_put+0xbb/0xd0
[ 76.969522][ T663] netdev_run_todo+0x5f0/0xc60
[ 76.969536][ T663] ? dev_ingress_queue_create+0x190/0x190
[ 76.969542][ T663] ? generic_xdp_install+0x410/0x410
[ 76.969547][ T663] ? unregister_netdevice_many+0x20/0x20
[ 76.969557][ T663] ? net_generic+0xbb/0x1f0 [ip6_gre]
[ 76.969571][ T663] rtnl_dellink+0x350/0xa30
[ 76.969580][ T663] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 76.969618][ T663] ? find_held_lock+0x2b/0x80
[ 76.969634][ T663] ? __lock_acquire+0x449/0x7e0
[ 76.969644][ T663] ? find_held_lock+0x2b/0x80
[ 76.969651][ T663] ? rtnetlink_rcv_msg+0x6e6/0xc00
[ 76.969655][ T663] ? __lock_release+0x5d/0x170
[ 76.969663][ T663] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 76.969669][ T663] rtnetlink_rcv_msg+0x709/0xc00
[ 76.969676][ T663] ? rtnl_port_fill+0x850/0x850
[ 76.969681][ T663] ? __lock_acquire+0x449/0x7e0
[ 76.969693][ T663] netlink_rcv_skb+0x121/0x340
[ 76.969701][ T663] ? rtnl_port_fill+0x850/0x850
[ 76.969707][ T663] ? netlink_ack+0xdd0/0xdd0
[ 76.969720][ T663] ? netlink_deliver_tap+0x13e/0x340
[ 76.969725][ T663] ? netlink_deliver_tap+0xc3/0x340
[ 76.969732][ T663] netlink_unicast+0x4aa/0x780
[ 76.969740][ T663] ? netlink_attachskb+0x810/0x810
[ 76.969749][ T663] ? __lock_acquire+0x449/0x7e0
[ 76.969759][ T663] netlink_sendmsg+0x714/0xbd0
[ 76.969767][ T663] ? netlink_unicast+0x780/0x780
[ 76.969773][ T663] ? __import_iovec+0x230/0x3b0
[ 76.969787][ T663] ? netlink_unicast+0x780/0x780
[ 76.969793][ T663] ____sys_sendmsg+0x3dd/0x890
[ 76.969802][ T663] ? get_timestamp.constprop.0+0x380/0x380
[ 76.969807][ T663] ? __copy_msghdr+0x3c0/0x3c0
[ 76.969819][ T663] ___sys_sendmsg+0xed/0x170
[ 76.969824][ T663] ? kasan_record_aux_stack+0x8c/0xa0
[ 76.969829][ T663] ? __call_rcu_common.constprop.0+0xa8/0x630
[ 76.969838][ T663] ? copy_msghdr_from_user+0x110/0x110
[ 76.969845][ T663] ? find_held_lock+0x2b/0x80
[ 76.969852][ T663] ? __lock_acquire+0x449/0x7e0
[ 76.969860][ T663] ? find_held_lock+0x2b/0x80
[ 76.969866][ T663] ? __virt_addr_valid+0x22a/0x450
[ 76.969873][ T663] ? __lock_release+0x5d/0x170
[ 76.969884][ T663] __sys_sendmsg+0x10b/0x1a0
[ 76.969889][ T663] ? __call_rcu_common.constprop.0+0x318/0x630
[ 76.969895][ T663] ? __sys_sendmsg_sock+0x20/0x20
[ 76.969908][ T663] ? rcu_is_watching+0x12/0xb0
[ 76.969914][ T663] do_syscall_64+0xc1/0xfd0
[ 76.969922][ T663] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 76.969929][ T663] RIP: 0033:0x7f3355d531d7
[ 76.969937][ T663] 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
[ 76.969941][ T663] RSP: 002b:00007fffb26e0dd8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 76.969950][ T663] RAX: ffffffffffffffda RBX: 00007fffb26e1500 RCX: 00007f3355d531d7
[ 76.969954][ T663] RDX: 0000000000000000 RSI: 00007fffb26e0e40 RDI: 0000000000000005
[ 76.969956][ T663] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078
[ 76.969959][ T663] R10: 00007f3355c4ff60 R11: 0000000000000246 R12: 0000000000000002
[ 76.969962][ T663] R13: 00000000690decdf R14: 0000000000499600 R15: 0000000000000000
[ 76.969974][ T663]
[ 76.969976][ T663]
[ 76.993874][ T663] Allocated by task 403:
[ 76.994115][ T663] kasan_save_stack+0x24/0x40
[ 76.994444][ T663] kasan_save_track+0x14/0x30
[ 76.994745][ T663] __kasan_kmalloc+0x7b/0x90
[ 76.995045][ T663] __kvmalloc_node_noprof+0x2e5/0x8e0
[ 76.995346][ T663] alloc_netdev_mqs+0x7d/0x1370
[ 76.995658][ T663] rtnl_create_link+0xa9e/0xe20
[ 76.995965][ T663] rtnl_newlink_create+0x203/0x770
[ 76.996270][ T663] __rtnl_newlink+0x231/0xa30
[ 76.996585][ T663] rtnl_newlink+0x693/0xa60
[ 76.996886][ T663] rtnetlink_rcv_msg+0x709/0xc00
[ 76.997192][ T663] netlink_rcv_skb+0x121/0x340
[ 76.997500][ T663] netlink_unicast+0x4aa/0x780
[ 76.998013][ T663] netlink_sendmsg+0x714/0xbd0
[ 76.998377][ T663] ____sys_sendmsg+0x3dd/0x890
[ 76.998711][ T663] ___sys_sendmsg+0xed/0x170
[ 76.999024][ T663] __sys_sendmsg+0x10b/0x1a0
[ 76.999327][ T663] do_syscall_64+0xc1/0xfd0
[ 76.999646][ T663] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 77.000062][ T663]
[ 77.000217][ T663] Freed by task 663:
[ 77.000455][ T663] kasan_save_stack+0x24/0x40
[ 77.000835][ T663] kasan_save_track+0x14/0x30
[ 77.001137][ T663] __kasan_save_free_info+0x3b/0x60
[ 77.001429][ T663] __kasan_slab_free+0x3f/0x60
[ 77.001959][ T663] kfree+0x21d/0x540
[ 77.002195][ T663] device_release+0x9c/0x210
[ 77.002692][ T663] kobject_cleanup+0xfe/0x360
[ 77.003227][ T663] netdev_run_todo+0x81f/0xc60
[ 77.003522][ T663] rtnl_dellink+0x350/0xa30
[ 77.003820][ T663] rtnetlink_rcv_msg+0x709/0xc00
[ 77.004118][ T663] netlink_rcv_skb+0x121/0x340
[ 77.004597][ T663] netlink_unicast+0x4aa/0x780
[ 77.004891][ T663] netlink_sendmsg+0x714/0xbd0
[ 77.005201][ T663] ____sys_sendmsg+0x3dd/0x890
[ 77.005497][ T663] ___sys_sendmsg+0xed/0x170
[ 77.005982][ T663] __sys_sendmsg+0x10b/0x1a0
[ 77.006279][ T663] do_syscall_64+0xc1/0xfd0
[ 77.006577][ T663] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 77.006945][ T663]
[ 77.007096][ T663] The buggy address belongs to the object at ffff888008efc000
[ 77.007096][ T663] which belongs to the cache kmalloc-4k of size 4096
[ 77.008031][ T663] The buggy address is located 1708 bytes inside of
[ 77.008031][ T663] freed 4096-byte region [ffff888008efc000, ffff888008efd000)
[ 77.008956][ T663]
[ 77.009102][ T663] The buggy address belongs to the physical page:
[ 77.009507][ T663] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x8ef8
[ 77.010297][ T663] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[ 77.010785][ T663] flags: 0x80000000000040(head|node=0|zone=1)
[ 77.011165][ T663] page_type: f5(slab)
[ 77.011401][ T663] raw: 0080000000000040 ffff888001043700 ffffea00002ec210 ffffea0000237210
[ 77.012151][ T663] raw: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 77.012676][ T663] head: 0080000000000040 ffff888001043700 ffffea00002ec210 ffffea0000237210
[ 77.013403][ T663] head: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 77.013921][ T663] head: 0080000000000003 ffffea000023be01 00000000ffffffff 00000000ffffffff
[ 77.014665][ T663] head: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
[ 77.015214][ T663] page dumped because: kasan: bad access detected
[ 77.015572][ T663]
[ 77.015722][ T663] Memory state around the buggy address:
[ 77.016038][ T663] ffff888008efc580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 77.016484][ T663] ffff888008efc600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 77.017095][ T663] >ffff888008efc680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 77.017530][ T663] ^
[ 77.017812][ T663] ffff888008efc700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 77.018417][ T663] ffff888008efc780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 77.018859][ T663] ==================================================================
[ 77.019467][ T663] Disabling lock debugging due to kernel taint
[ 77.019870][ T663] ------------[ cut here ]------------
[ 77.020262][ T663] refcount_t: underflow; use-after-free.
[ 77.020550][ T663] WARNING: CPU: 1 PID: 663 at lib/refcount.c:28 refcount_warn_saturate+0x16f/0x1b0
[ 77.021098][ T663] Modules linked in: act_gact cls_flower sch_ingress ip6_gre ip6_tunnel tunnel6 gre 8021q dummy vrf veth
[ 77.021657][ T663] CPU: 1 UID: 0 PID: 663 Comm: ip Tainted: G B 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 77.022412][ T663] Tainted: [B]=BAD_PAGE
[ 77.022619][ T663] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 77.022949][ T663] RIP: 0010:refcount_warn_saturate+0x16f/0x1b0
[ 77.023304][ T663] 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 b9 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
[ 77.024447][ T663] RSP: 0018:ffffc90000fff1f0 EFLAGS: 00010286
[ 77.024753][ T663] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[ 77.025288][ T663] RDX: 0000000000000002 RSI: 0000000000000004 RDI: 0000000000000001
[ 77.025667][ T663] RBP: 0000000000000003 R08: 0000000000000000 R09: fffffbfff74be134
[ 77.026223][ T663] R10: 0000000000000003 R11: ffffc90000ffed80 R12: 0000000000000001
[ 77.026596][ T663] R13: dffffc0000000000 R14: dead000000000122 R15: dead000000000100
[ 77.026987][ T663] FS: 00007f3355b85800(0000) GS:ffff88807a872000(0000) knlGS:0000000000000000
[ 77.029089][ T663] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 77.029419][ T663] CR2: 000056241723b908 CR3: 0000000009fb0004 CR4: 0000000000772ef0
[ 77.029857][ T663] PKRU: 55555554
[ 77.030221][ T663] Call Trace:
[ 77.030426][ T663]
[ 77.030580][ T663] netdev_run_todo+0x5f0/0xc60
[ 77.030860][ T663] ? dev_ingress_queue_create+0x190/0x190
[ 77.031316][ T663] ? generic_xdp_install+0x410/0x410
[ 77.031593][ T663] ? unregister_netdevice_many+0x20/0x20
[ 77.031882][ T663] ? net_generic+0xbb/0x1f0 [ip6_gre]
[ 77.032162][ T663] rtnl_dellink+0x350/0xa30
[ 77.032435][ T663] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 77.032985][ T663] ? find_held_lock+0x2b/0x80
[ 77.033281][ T663] ? __lock_acquire+0x449/0x7e0
[ 77.033560][ T663] ? find_held_lock+0x2b/0x80
[ 77.033843][ T663] ? rtnetlink_rcv_msg+0x6e6/0xc00
[ 77.034119][ T663] ? __lock_release+0x5d/0x170
[ 77.034390][ T663] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 77.034722][ T663] rtnetlink_rcv_msg+0x709/0xc00
[ 77.035161][ T663] ? rtnl_port_fill+0x850/0x850
[ 77.035424][ T663] ? __lock_acquire+0x449/0x7e0
[ 77.035703][ T663] netlink_rcv_skb+0x121/0x340
[ 77.035970][ T663] ? rtnl_port_fill+0x850/0x850
[ 77.036239][ T663] ? netlink_ack+0xdd0/0xdd0
[ 77.036504][ T663] ? netlink_deliver_tap+0x13e/0x340
[ 77.036766][ T663] ? netlink_deliver_tap+0xc3/0x340
[ 77.037044][ T663] netlink_unicast+0x4aa/0x780
[ 77.037317][ T663] ? netlink_attachskb+0x810/0x810
[ 77.037588][ T663] ? __lock_acquire+0x449/0x7e0
[ 77.037872][ T663] netlink_sendmsg+0x714/0xbd0
[ 77.038153][ T663] ? netlink_unicast+0x780/0x780
[ 77.038419][ T663] ? __import_iovec+0x230/0x3b0
[ 77.038689][ T663] ? netlink_unicast+0x780/0x780
[ 77.038949][ T663] ____sys_sendmsg+0x3dd/0x890
[ 77.039222][ T663] ? get_timestamp.constprop.0+0x380/0x380
[ 77.039696][ T663] ? __copy_msghdr+0x3c0/0x3c0
[ 77.039966][ T663] ___sys_sendmsg+0xed/0x170
[ 77.040245][ T663] ? kasan_record_aux_stack+0x8c/0xa0
[ 77.040506][ T663] ? __call_rcu_common.constprop.0+0xa8/0x630
[ 77.040989][ T663] ? copy_msghdr_from_user+0x110/0x110
[ 77.041251][ T663] ? find_held_lock+0x2b/0x80
[ 77.041509][ T663] ? __lock_acquire+0x449/0x7e0
[ 77.041790][ T663] ? find_held_lock+0x2b/0x80
[ 77.042206][ T663] ? __virt_addr_valid+0x22a/0x450
[ 77.042476][ T663] ? __lock_release+0x5d/0x170
[ 77.042733][ T663] __sys_sendmsg+0x10b/0x1a0
[ 77.042986][ T663] ? __call_rcu_common.constprop.0+0x318/0x630
[ 77.043322][ T663] ? __sys_sendmsg_sock+0x20/0x20
[ 77.043586][ T663] ? rcu_is_watching+0x12/0xb0
[ 77.043844][ T663] do_syscall_64+0xc1/0xfd0
[ 77.044325][ T663] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 77.044658][ T663] RIP: 0033:0x7f3355d531d7
[ 77.044935][ T663] 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
[ 77.046022][ T663] RSP: 002b:00007fffb26e0dd8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 77.046423][ T663] RAX: ffffffffffffffda RBX: 00007fffb26e1500 RCX: 00007f3355d531d7
[ 77.047016][ T663] RDX: 0000000000000000 RSI: 00007fffb26e0e40 RDI: 0000000000000005
[ 77.047410][ T663] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078
[ 77.047795][ T663] R10: 00007f3355c4ff60 R11: 0000000000000246 R12: 0000000000000002
[ 77.048342][ T663] R13: 00000000690decdf R14: 0000000000499600 R15: 0000000000000000
[ 77.048743][ T663]
[ 77.048926][ T663] irq event stamp: 38989
[ 77.049141][ T663] hardirqs last enabled at (38989): [] finish_task_switch.isra.0+0x245/0x960
[ 77.049633][ T663] hardirqs last disabled at (38988): [] __schedule+0x94a/0x1b10
[ 77.050080][ T663] softirqs last enabled at (38208): [] handle_softirqs+0x352/0x610
[ 77.050518][ T663] softirqs last disabled at (38201): [] irq_exit_rcu+0xab/0x100
[ 77.050918][ T663] ---[ end trace 0000000000000000 ]---