[ 18.661000][ T281] link0: entered promiscuous mode
[ 19.675283][ T281] link0: left promiscuous mode
[ 20.141633][ T292] ==================================================================
[ 20.142105][ T292] BUG: KASAN: slab-use-after-free in kobject_put+0xbb/0xd0
[ 20.142519][ T292] Read of size 1 at addr ffff88800b5796c4 by task ip/292
[ 20.142825][ T292]
[ 20.142957][ T292] CPU: 0 UID: 0 PID: 292 Comm: ip Not tainted 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 20.142966][ T292] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 20.142969][ T292] Call Trace:
[ 20.142974][ T292]
[ 20.142977][ T292] dump_stack_lvl+0x82/0xc0
[ 20.142989][ T292] print_address_description.constprop.0+0x2c/0x3a0
[ 20.143006][ T292] ? kobject_put+0xbb/0xd0
[ 20.143012][ T292] print_report+0xb4/0x270
[ 20.143020][ T292] ? kobject_put+0xbb/0xd0
[ 20.143024][ T292] ? kasan_addr_to_slab+0x21/0x70
[ 20.143031][ T292] ? kobject_put+0xbb/0xd0
[ 20.143036][ T292] kasan_report+0xca/0x100
[ 20.143043][ T292] ? kobject_put+0xbb/0xd0
[ 20.143053][ T292] kobject_put+0xbb/0xd0
[ 20.143058][ T292] netdev_run_todo+0x5f0/0xc60
[ 20.143069][ T292] ? dev_ingress_queue_create+0x190/0x190
[ 20.143075][ T292] ? generic_xdp_install+0x410/0x410
[ 20.143081][ T292] ? unregister_netdevice_many+0x20/0x20
[ 20.143092][ T292] rtnl_dellink+0x350/0xa30
[ 20.143101][ T292] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 20.143140][ T292] ? find_held_lock+0x2b/0x80
[ 20.143150][ T292] ? __lock_acquire+0x449/0x7e0
[ 20.143160][ T292] ? find_held_lock+0x2b/0x80
[ 20.143166][ T292] ? rtnetlink_rcv_msg+0x6e6/0xc00
[ 20.143171][ T292] ? __lock_release+0x5d/0x170
[ 20.143178][ T292] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 20.143184][ T292] rtnetlink_rcv_msg+0x709/0xc00
[ 20.143192][ T292] ? rtnl_port_fill+0x890/0x890
[ 20.143197][ T292] ? __lock_acquire+0x449/0x7e0
[ 20.143210][ T292] netlink_rcv_skb+0x121/0x340
[ 20.143221][ T292] ? rtnl_port_fill+0x890/0x890
[ 20.143229][ T292] ? netlink_ack+0xdf0/0xdf0
[ 20.143241][ T292] ? netlink_deliver_tap+0x13e/0x340
[ 20.143245][ T292] ? netlink_deliver_tap+0xc3/0x340
[ 20.143252][ T292] netlink_unicast+0x4aa/0x780
[ 20.143260][ T292] ? netlink_attachskb+0x810/0x810
[ 20.143267][ T292] ? __lock_acquire+0x449/0x7e0
[ 20.143276][ T292] netlink_sendmsg+0x714/0xbd0
[ 20.143284][ T292] ? netlink_unicast+0x780/0x780
[ 20.143290][ T292] ? __import_iovec+0x230/0x3b0
[ 20.143313][ T292] ? netlink_unicast+0x780/0x780
[ 20.143319][ T292] ____sys_sendmsg+0x3dd/0x890
[ 20.143326][ T292] ? get_timestamp.constprop.0+0x370/0x370
[ 20.143331][ T292] ? __copy_msghdr+0x3c0/0x3c0
[ 20.143344][ T292] ___sys_sendmsg+0xed/0x170
[ 20.143349][ T292] ? kasan_record_aux_stack+0x8c/0xa0
[ 20.143357][ T292] ? __call_rcu_common.constprop.0+0xa8/0x630
[ 20.143364][ T292] ? copy_msghdr_from_user+0x110/0x110
[ 20.143372][ T292] ? find_held_lock+0x2b/0x80
[ 20.143380][ T292] ? __lock_acquire+0x449/0x7e0
[ 20.143390][ T292] ? find_held_lock+0x2b/0x80
[ 20.143396][ T292] ? __virt_addr_valid+0x22a/0x450
[ 20.143411][ T292] ? __lock_release+0x5d/0x170
[ 20.143421][ T292] __sys_sendmsg+0x10b/0x1a0
[ 20.143426][ T292] ? __call_rcu_common.constprop.0+0x318/0x630
[ 20.143431][ T292] ? __sys_sendmsg_sock+0x20/0x20
[ 20.143445][ T292] ? rcu_is_watching+0x12/0xb0
[ 20.143454][ T292] do_syscall_64+0xc1/0xfd0
[ 20.143463][ T292] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 20.143469][ T292] RIP: 0033:0x7fb9100f51d7
[ 20.143479][ T292] 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
[ 20.143484][ T292] RSP: 002b:00007ffd45052478 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 20.143490][ T292] RAX: ffffffffffffffda RBX: 00007ffd45052bb0 RCX: 00007fb9100f51d7
[ 20.143494][ T292] RDX: 0000000000000000 RSI: 00007ffd450524e0 RDI: 0000000000000005
[ 20.143497][ T292] RBP: 0000000000000001 R08: 0000000000000003 R09: 0000000000000078
[ 20.143500][ T292] R10: 00007fb90fff1510 R11: 0000000000000246 R12: 0000000000000001
[ 20.143503][ T292] R13: 00000000690df891 R14: 0000000000499600 R15: 0000000000000000
[ 20.143516][ T292]
[ 20.143518][ T292]
[ 20.162024][ T292] Allocated by task 271:
[ 20.162226][ T292] kasan_save_stack+0x24/0x40
[ 20.162501][ T292] kasan_save_track+0x14/0x30
[ 20.162769][ T292] __kasan_kmalloc+0x7b/0x90
[ 20.163023][ T292] __kvmalloc_node_noprof+0x2e5/0x8e0
[ 20.163307][ T292] alloc_netdev_mqs+0x7d/0x1370
[ 20.163569][ T292] rtnl_create_link+0xa9e/0xe20
[ 20.163832][ T292] rtnl_newlink_create+0x203/0x8f0
[ 20.164085][ T292] __rtnl_newlink+0x231/0xa30
[ 20.164351][ T292] rtnl_newlink+0x693/0xa60
[ 20.164617][ T292] rtnetlink_rcv_msg+0x709/0xc00
[ 20.164890][ T292] netlink_rcv_skb+0x121/0x340
[ 20.165149][ T292] netlink_unicast+0x4aa/0x780
[ 20.165409][ T292] netlink_sendmsg+0x714/0xbd0
[ 20.165672][ T292] ____sys_sendmsg+0x3dd/0x890
[ 20.165951][ T292] ___sys_sendmsg+0xed/0x170
[ 20.166221][ T292] __sys_sendmsg+0x10b/0x1a0
[ 20.166479][ T292] do_syscall_64+0xc1/0xfd0
[ 20.166743][ T292] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 20.167079][ T292]
[ 20.167212][ T292] Freed by task 292:
[ 20.167410][ T292] kasan_save_stack+0x24/0x40
[ 20.167684][ T292] kasan_save_track+0x14/0x30
[ 20.167949][ T292] __kasan_save_free_info+0x3b/0x60
[ 20.168200][ T292] __kasan_slab_free+0x3f/0x60
[ 20.168440][ T292] kfree+0x21d/0x540
[ 20.168644][ T292] device_release+0x9c/0x210
[ 20.169112][ T292] kobject_cleanup+0xfe/0x360
[ 20.169401][ T292] netdev_run_todo+0x81f/0xc60
[ 20.169614][ T292] rtnl_dellink+0x350/0xa30
[ 20.169892][ T292] rtnetlink_rcv_msg+0x709/0xc00
[ 20.170346][ T292] netlink_rcv_skb+0x121/0x340
[ 20.170610][ T292] netlink_unicast+0x4aa/0x780
[ 20.170905][ T292] netlink_sendmsg+0x714/0xbd0
[ 20.171115][ T292] ____sys_sendmsg+0x3dd/0x890
[ 20.171374][ T292] ___sys_sendmsg+0xed/0x170
[ 20.171658][ T292] __sys_sendmsg+0x10b/0x1a0
[ 20.171945][ T292] do_syscall_64+0xc1/0xfd0
[ 20.172226][ T292] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 20.172751][ T292]
[ 20.172891][ T292] The buggy address belongs to the object at ffff88800b579000
[ 20.172891][ T292] which belongs to the cache kmalloc-4k of size 4096
[ 20.173721][ T292] The buggy address is located 1732 bytes inside of
[ 20.173721][ T292] freed 4096-byte region [ffff88800b579000, ffff88800b57a000)
[ 20.174347][ T292]
[ 20.174496][ T292] The buggy address belongs to the physical page:
[ 20.174997][ T292] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xb578
[ 20.175502][ T292] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[ 20.175940][ T292] flags: 0x80000000000040(head|node=0|zone=1)
[ 20.176470][ T292] page_type: f5(slab)
[ 20.176691][ T292] raw: 0080000000000040 ffff888001043700 ffffea00002d6010 ffffea000033bc10
[ 20.177198][ T292] raw: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 20.177877][ T292] head: 0080000000000040 ffff888001043700 ffffea00002d6010 ffffea000033bc10
[ 20.178381][ T292] head: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 20.179071][ T292] head: 0080000000000003 ffffea00002d5e01 00000000ffffffff 00000000ffffffff
[ 20.179564][ T292] head: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
[ 20.180246][ T292] page dumped because: kasan: bad access detected
[ 20.180591][ T292]
[ 20.180730][ T292] Memory state around the buggy address:
[ 20.181004][ T292] ffff88800b579580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 20.181580][ T292] ffff88800b579600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 20.181977][ T292] >ffff88800b579680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 20.182376][ T292] ^
[ 20.182878][ T292] ffff88800b579700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 20.183278][ T292] ffff88800b579780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 20.183688][ T292] ==================================================================
[ 20.184284][ T292] Disabling lock debugging due to kernel taint
[ 20.184608][ T292] ------------[ cut here ]------------
[ 20.184855][ T292] refcount_t: underflow; use-after-free.
[ 20.185335][ T292] WARNING: CPU: 0 PID: 292 at lib/refcount.c:28 refcount_warn_saturate+0x16f/0x1b0
[ 20.185798][ T292] Modules linked in:
[ 20.186008][ T292] CPU: 0 UID: 0 PID: 292 Comm: ip Tainted: G B 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 20.186731][ T292] Tainted: [B]=BAD_PAGE
[ 20.186934][ T292] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 20.187270][ T292] RIP: 0010:refcount_warn_saturate+0x16f/0x1b0
[ 20.187620][ T292] Code: cc 38 03 80 fb 01 0f 87 29 33 d7 fe 83 e3 01 0f 85 51 ff ff ff c6 05 17 cc 38 03 01 90 48 c7 c7 40 ba 85 b6 e8 62 d6 16 ff 90 <0f> 0b 90 90 e9 33 ff ff ff 48 89 df e8 c0 9d a0 ff e9 ba fe ff ff
[ 20.188592][ T292] RSP: 0018:ffffc90000d071f0 EFLAGS: 00010286
[ 20.188954][ T292] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[ 20.189388][ T292] RDX: 0000000000000002 RSI: 0000000000000004 RDI: 0000000000000001
[ 20.189785][ T292] RBP: 0000000000000003 R08: 0000000000000000 R09: fffffbfff6f00934
[ 20.190190][ T292] R10: 0000000000000003 R11: ffffc90000d06d80 R12: 0000000000000001
[ 20.190616][ T292] R13: dffffc0000000000 R14: dead000000000122 R15: dead000000000100
[ 20.191041][ T292] FS: 00007fb90ff27800(0000) GS:ffff8880b4308000(0000) knlGS:0000000000000000
[ 20.191544][ T292] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 20.191904][ T292] CR2: 000055b2d4514dec CR3: 000000000b99b005 CR4: 0000000000772ef0
[ 20.192347][ T292] PKRU: 55555554
[ 20.192574][ T292] Call Trace:
[ 20.192785][ T292]
[ 20.192916][ T292] netdev_run_todo+0x5f0/0xc60
[ 20.193210][ T292] ? dev_ingress_queue_create+0x190/0x190
[ 20.193511][ T292] ? generic_xdp_install+0x410/0x410
[ 20.193791][ T292] ? unregister_netdevice_many+0x20/0x20
[ 20.194078][ T292] rtnl_dellink+0x350/0xa30
[ 20.194381][ T292] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 20.194761][ T292] ? find_held_lock+0x2b/0x80
[ 20.195044][ T292] ? __lock_acquire+0x449/0x7e0
[ 20.195462][ T292] ? find_held_lock+0x2b/0x80
[ 20.195744][ T292] ? rtnetlink_rcv_msg+0x6e6/0xc00
[ 20.196022][ T292] ? __lock_release+0x5d/0x170
[ 20.196428][ T292] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 20.196791][ T292] rtnetlink_rcv_msg+0x709/0xc00
[ 20.197069][ T292] ? rtnl_port_fill+0x890/0x890
[ 20.197473][ T292] ? __lock_acquire+0x449/0x7e0
[ 20.197759][ T292] netlink_rcv_skb+0x121/0x340
[ 20.198037][ T292] ? rtnl_port_fill+0x890/0x890
[ 20.198481][ T292] ? netlink_ack+0xdf0/0xdf0
[ 20.198761][ T292] ? netlink_deliver_tap+0x13e/0x340
[ 20.199026][ T292] ? netlink_deliver_tap+0xc3/0x340
[ 20.199455][ T292] netlink_unicast+0x4aa/0x780
[ 20.199741][ T292] ? netlink_attachskb+0x810/0x810
[ 20.200017][ T292] ? __lock_acquire+0x449/0x7e0
[ 20.200426][ T292] netlink_sendmsg+0x714/0xbd0
[ 20.200704][ T292] ? netlink_unicast+0x780/0x780
[ 20.200986][ T292] ? __import_iovec+0x230/0x3b0
[ 20.201390][ T292] ? netlink_unicast+0x780/0x780
[ 20.201673][ T292] ____sys_sendmsg+0x3dd/0x890
[ 20.201934][ T292] ? get_timestamp.constprop.0+0x370/0x370
[ 20.202372][ T292] ? __copy_msghdr+0x3c0/0x3c0
[ 20.202643][ T292] ___sys_sendmsg+0xed/0x170
[ 20.202914][ T292] ? kasan_record_aux_stack+0x8c/0xa0
[ 20.203333][ T292] ? __call_rcu_common.constprop.0+0xa8/0x630
[ 20.203695][ T292] ? copy_msghdr_from_user+0x110/0x110
[ 20.203982][ T292] ? find_held_lock+0x2b/0x80
[ 20.204394][ T292] ? __lock_acquire+0x449/0x7e0
[ 20.204677][ T292] ? find_held_lock+0x2b/0x80
[ 20.204960][ T292] ? __virt_addr_valid+0x22a/0x450
[ 20.205359][ T292] ? __lock_release+0x5d/0x170
[ 20.205644][ T292] __sys_sendmsg+0x10b/0x1a0
[ 20.205917][ T292] ? __call_rcu_common.constprop.0+0x318/0x630
[ 20.206290][ T292] ? __sys_sendmsg_sock+0x20/0x20
[ 20.206469][ T292] ? rcu_is_watching+0x12/0xb0
[ 20.206643][ T292] do_syscall_64+0xc1/0xfd0
[ 20.206826][ T292] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 20.207238][ T292] RIP: 0033:0x7fb9100f51d7
[ 20.207543][ T292] 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
[ 20.208670][ T292] RSP: 002b:00007ffd45052478 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 20.209094][ T292] RAX: ffffffffffffffda RBX: 00007ffd45052bb0 RCX: 00007fb9100f51d7
[ 20.209626][ T292] RDX: 0000000000000000 RSI: 00007ffd450524e0 RDI: 0000000000000005
[ 20.210038][ T292] RBP: 0000000000000001 R08: 0000000000000003 R09: 0000000000000078
[ 20.210446][ T292] R10: 00007fb90fff1510 R11: 0000000000000246 R12: 0000000000000001
[ 20.210704][ T292] R13: 00000000690df891 R14: 0000000000499600 R15: 0000000000000000
[ 20.210975][ T292]
[ 20.211169][ T292] irq event stamp: 49059
[ 20.211298][ T292] hardirqs last enabled at (49059): [] irqentry_exit+0x3b/0x80
[ 20.211615][ T292] hardirqs last disabled at (49058): [] handle_softirqs+0x47f/0x610
[ 20.211918][ T292] softirqs last enabled at (48962): [] handle_softirqs+0x352/0x610
[ 20.212288][ T292] softirqs last disabled at (48957): [] irq_exit_rcu+0xab/0x100
[ 20.212583][ T292] ---[ end trace 0000000000000000 ]---