[ 20.712726][ T314] 8021q: 802.1Q VLAN Support v1.8
[ 21.199194][ T319] gre: GRE over IPv4 demultiplexer driver
[ 21.228882][ T319] ip_gre: GRE over IPv4 tunneling driver
[ 40.829222][ T419] ==================================================================
[ 40.829555][ T419] BUG: KASAN: slab-use-after-free in kobject_put+0xbb/0xd0
[ 40.829861][ T419] Read of size 1 at addr ffff88800df216ac by task ip/419
[ 40.830084][ T419]
[ 40.830184][ T419] CPU: 1 UID: 0 PID: 419 Comm: ip Not tainted 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 40.830190][ T419] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 40.830192][ T419] Call Trace:
[ 40.830194][ T419]
[ 40.830197][ T419] dump_stack_lvl+0x82/0xc0
[ 40.830203][ T419] print_address_description.constprop.0+0x2c/0x3a0
[ 40.830213][ T419] ? kobject_put+0xbb/0xd0
[ 40.830217][ T419] print_report+0xb4/0x270
[ 40.830221][ T419] ? kobject_put+0xbb/0xd0
[ 40.830224][ T419] ? kasan_addr_to_slab+0x21/0x70
[ 40.830227][ T419] ? kobject_put+0xbb/0xd0
[ 40.830230][ T419] kasan_report+0xca/0x100
[ 40.830234][ T419] ? kobject_put+0xbb/0xd0
[ 40.830240][ T419] kobject_put+0xbb/0xd0
[ 40.830244][ T419] netdev_run_todo+0x5f0/0xc60
[ 40.830249][ T419] ? dev_ingress_queue_create+0x190/0x190
[ 40.830253][ T419] ? generic_xdp_install+0x410/0x410
[ 40.830256][ T419] ? unregister_netdevice_many+0x20/0x20
[ 40.830258][ T419] ? net_generic+0xb1/0x1f0
[ 40.830265][ T419] ? net_generic+0xbb/0x1f0
[ 40.830273][ T419] rtnl_dellink+0x350/0xa30
[ 40.830281][ T419] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 40.830304][ T419] ? find_held_lock+0x2b/0x80
[ 40.830312][ T419] ? __lock_acquire+0x449/0x7e0
[ 40.830319][ T419] ? find_held_lock+0x2b/0x80
[ 40.830323][ T419] ? rtnetlink_rcv_msg+0x6e6/0xc00
[ 40.830326][ T419] ? __lock_release+0x5d/0x170
[ 40.830330][ T419] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 40.830333][ T419] rtnetlink_rcv_msg+0x709/0xc00
[ 40.830337][ T419] ? rtnl_port_fill+0x850/0x850
[ 40.830340][ T419] ? __lock_acquire+0x449/0x7e0
[ 40.830347][ T419] netlink_rcv_skb+0x121/0x340
[ 40.830353][ T419] ? rtnl_port_fill+0x850/0x850
[ 40.830357][ T419] ? netlink_ack+0xdd0/0xdd0
[ 40.830363][ T419] ? netlink_deliver_tap+0x13e/0x340
[ 40.830366][ T419] ? netlink_deliver_tap+0xc3/0x340
[ 40.830370][ T419] netlink_unicast+0x4aa/0x780
[ 40.830375][ T419] ? netlink_attachskb+0x810/0x810
[ 40.830378][ T419] ? __lock_acquire+0x449/0x7e0
[ 40.830384][ T419] netlink_sendmsg+0x714/0xbd0
[ 40.830389][ T419] ? netlink_unicast+0x780/0x780
[ 40.830392][ T419] ? __import_iovec+0x230/0x3b0
[ 40.830400][ T419] ? netlink_unicast+0x780/0x780
[ 40.830403][ T419] ____sys_sendmsg+0x3dd/0x890
[ 40.830410][ T419] ? get_timestamp.constprop.0+0x380/0x380
[ 40.830414][ T419] ? __copy_msghdr+0x3c0/0x3c0
[ 40.830422][ T419] ___sys_sendmsg+0xed/0x170
[ 40.830425][ T419] ? kasan_record_aux_stack+0x8c/0xa0
[ 40.830428][ T419] ? __call_rcu_common.constprop.0+0xa8/0x630
[ 40.830434][ T419] ? copy_msghdr_from_user+0x110/0x110
[ 40.830439][ T419] ? find_held_lock+0x2b/0x80
[ 40.830443][ T419] ? __lock_acquire+0x449/0x7e0
[ 40.830449][ T419] ? find_held_lock+0x2b/0x80
[ 40.830452][ T419] ? __virt_addr_valid+0x22a/0x450
[ 40.830462][ T419] ? __lock_release+0x5d/0x170
[ 40.830468][ T419] __sys_sendmsg+0x10b/0x1a0
[ 40.830471][ T419] ? __call_rcu_common.constprop.0+0x318/0x630
[ 40.830475][ T419] ? __sys_sendmsg_sock+0x20/0x20
[ 40.830482][ T419] ? rcu_is_watching+0x12/0xb0
[ 40.830487][ T419] do_syscall_64+0xc1/0xfd0
[ 40.830493][ T419] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 40.830497][ T419] RIP: 0033:0x7f5e62ca91d7
[ 40.830503][ T419] 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
[ 40.830506][ T419] RSP: 002b:00007ffde6023ee8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 40.830511][ T419] RAX: ffffffffffffffda RBX: 00007ffde6024610 RCX: 00007f5e62ca91d7
[ 40.830513][ T419] RDX: 0000000000000000 RSI: 00007ffde6023f50 RDI: 0000000000000005
[ 40.830515][ T419] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078
[ 40.830517][ T419] R10: 00007f5e62ba5f60 R11: 0000000000000246 R12: 0000000000000002
[ 40.830519][ T419] R13: 00000000690dfb00 R14: 0000000000499600 R15: 0000000000000000
[ 40.830525][ T419]
[ 40.830526][ T419]
[ 40.843364][ T419] Allocated by task 346:
[ 40.843498][ T419] kasan_save_stack+0x24/0x40
[ 40.843685][ T419] kasan_save_track+0x14/0x30
[ 40.843849][ T419] __kasan_kmalloc+0x7b/0x90
[ 40.844061][ T419] __kvmalloc_node_noprof+0x2e5/0x8e0
[ 40.844233][ T419] alloc_netdev_mqs+0x7d/0x1370
[ 40.844438][ T419] rtnl_create_link+0xa9e/0xe20
[ 40.844607][ T419] rtnl_newlink_create+0x203/0x770
[ 40.844797][ T419] __rtnl_newlink+0x231/0xa30
[ 40.844975][ T419] rtnl_newlink+0x693/0xa60
[ 40.845140][ T419] rtnetlink_rcv_msg+0x709/0xc00
[ 40.845330][ T419] netlink_rcv_skb+0x121/0x340
[ 40.845514][ T419] netlink_unicast+0x4aa/0x780
[ 40.845715][ T419] netlink_sendmsg+0x714/0xbd0
[ 40.845880][ T419] ____sys_sendmsg+0x3dd/0x890
[ 40.846052][ T419] ___sys_sendmsg+0xed/0x170
[ 40.846231][ T419] __sys_sendmsg+0x10b/0x1a0
[ 40.846407][ T419] do_syscall_64+0xc1/0xfd0
[ 40.846576][ T419] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 40.846792][ T419]
[ 40.846918][ T419] Freed by task 419:
[ 40.847057][ T419] kasan_save_stack+0x24/0x40
[ 40.847233][ T419] kasan_save_track+0x14/0x30
[ 40.847407][ T419] __kasan_save_free_info+0x3b/0x60
[ 40.847577][ T419] __kasan_slab_free+0x3f/0x60
[ 40.847752][ T419] kfree+0x21d/0x540
[ 40.847907][ T419] device_release+0x9c/0x210
[ 40.848102][ T419] kobject_cleanup+0xfe/0x360
[ 40.848286][ T419] netdev_run_todo+0x81f/0xc60
[ 40.848472][ T419] rtnl_dellink+0x350/0xa30
[ 40.848663][ T419] rtnetlink_rcv_msg+0x709/0xc00
[ 40.848828][ T419] netlink_rcv_skb+0x121/0x340
[ 40.848994][ T419] netlink_unicast+0x4aa/0x780
[ 40.849162][ T419] netlink_sendmsg+0x714/0xbd0
[ 40.849345][ T419] ____sys_sendmsg+0x3dd/0x890
[ 40.849511][ T419] ___sys_sendmsg+0xed/0x170
[ 40.849699][ T419] __sys_sendmsg+0x10b/0x1a0
[ 40.849870][ T419] do_syscall_64+0xc1/0xfd0
[ 40.850044][ T419] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 40.850251][ T419]
[ 40.850348][ T419] The buggy address belongs to the object at ffff88800df21000
[ 40.850348][ T419] which belongs to the cache kmalloc-4k of size 4096
[ 40.850760][ T419] The buggy address is located 1708 bytes inside of
[ 40.850760][ T419] freed 4096-byte region [ffff88800df21000, ffff88800df22000)
[ 40.851182][ T419]
[ 40.851266][ T419] The buggy address belongs to the physical page:
[ 40.851478][ T419] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xdf20
[ 40.851818][ T419] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[ 40.852099][ T419] flags: 0x80000000000040(head|node=0|zone=1)
[ 40.852350][ T419] page_type: f5(slab)
[ 40.852492][ T419] raw: 0080000000000040 ffff888001043700 ffffea000021b610 ffffea000020e610
[ 40.852838][ T419] raw: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 40.853150][ T419] head: 0080000000000040 ffff888001043700 ffffea000021b610 ffffea000020e610
[ 40.853455][ T419] head: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 40.853766][ T419] head: 0080000000000003 ffffea000037c801 00000000ffffffff 00000000ffffffff
[ 40.854055][ T419] head: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
[ 40.854355][ T419] page dumped because: kasan: bad access detected
[ 40.854566][ T419]
[ 40.854668][ T419] Memory state around the buggy address:
[ 40.854844][ T419] ffff88800df21580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 40.855090][ T419] ffff88800df21600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 40.855331][ T419] >ffff88800df21680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 40.855575][ T419] ^
[ 40.855846][ T419] ffff88800df21700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 40.856091][ T419] ffff88800df21780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 40.856332][ T419] ==================================================================
[ 40.856898][ T419] Disabling lock debugging due to kernel taint
[ 40.857157][ T419] ------------[ cut here ]------------
[ 40.857373][ T419] refcount_t: underflow; use-after-free.
[ 40.857594][ T419] WARNING: CPU: 2 PID: 419 at lib/refcount.c:28 refcount_warn_saturate+0x16f/0x1b0
[ 40.857929][ T419] Modules linked in: ip_gre gre 8021q vrf veth
[ 40.858178][ T419] CPU: 2 UID: 0 PID: 419 Comm: ip Tainted: G B 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 40.858551][ T419] Tainted: [B]=BAD_PAGE
[ 40.858715][ T419] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 40.858954][ T419] RIP: 0010:refcount_warn_saturate+0x16f/0x1b0
[ 40.859191][ T419] 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 94 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
[ 40.859825][ T419] RSP: 0018:ffffc90000a771f0 EFLAGS: 00010286
[ 40.860062][ T419] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[ 40.860393][ T419] RDX: 0000000000000002 RSI: 0000000000000004 RDI: 0000000000000001
[ 40.860665][ T419] RBP: 0000000000000003 R08: 0000000000000000 R09: fffffbfff2a3e134
[ 40.860937][ T419] R10: 0000000000000003 R11: ffffc90000a76d80 R12: 0000000000000001
[ 40.861211][ T419] R13: dffffc0000000000 R14: dead000000000122 R15: dead000000000100
[ 40.861498][ T419] FS: 00007f5e62adb800(0000) GS:ffff88809fcf2000(0000) knlGS:0000000000000000
[ 40.861812][ T419] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 40.862047][ T419] CR2: 00007f3e9d0e2000 CR3: 0000000004faa006 CR4: 0000000000772ef0
[ 40.862338][ T419] PKRU: 55555554
[ 40.862492][ T419] Call Trace:
[ 40.862635][ T419]
[ 40.862744][ T419] netdev_run_todo+0x5f0/0xc60
[ 40.862938][ T419] ? dev_ingress_queue_create+0x190/0x190
[ 40.863247][ T419] ? generic_xdp_install+0x410/0x410
[ 40.863441][ T419] ? unregister_netdevice_many+0x20/0x20
[ 40.863621][ T419] ? net_generic+0xb1/0x1f0
[ 40.863804][ T419] ? net_generic+0xbb/0x1f0
[ 40.864081][ T419] rtnl_dellink+0x350/0xa30
[ 40.864277][ T419] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 40.864529][ T419] ? find_held_lock+0x2b/0x80
[ 40.864723][ T419] ? __lock_acquire+0x449/0x7e0
[ 40.864958][ T419] ? find_held_lock+0x2b/0x80
[ 40.865204][ T419] ? rtnetlink_rcv_msg+0x6e6/0xc00
[ 40.865435][ T419] ? __lock_release+0x5d/0x170
[ 40.865726][ T419] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 40.866082][ T419] rtnetlink_rcv_msg+0x709/0xc00
[ 40.866396][ T419] ? rtnl_port_fill+0x850/0x850
[ 40.866701][ T419] ? __lock_acquire+0x449/0x7e0
[ 40.867002][ T419] netlink_rcv_skb+0x121/0x340
[ 40.867297][ T419] ? rtnl_port_fill+0x850/0x850
[ 40.867597][ T419] ? netlink_ack+0xdd0/0xdd0
[ 40.867903][ T419] ? netlink_deliver_tap+0x13e/0x340
[ 40.868099][ T419] ? netlink_deliver_tap+0xc3/0x340
[ 40.868278][ T419] netlink_unicast+0x4aa/0x780
[ 40.868469][ T419] ? netlink_attachskb+0x810/0x810
[ 40.868649][ T419] ? __lock_acquire+0x449/0x7e0
[ 40.868837][ T419] netlink_sendmsg+0x714/0xbd0
[ 40.869017][ T419] ? netlink_unicast+0x780/0x780
[ 40.869204][ T419] ? __import_iovec+0x230/0x3b0
[ 40.869400][ T419] ? netlink_unicast+0x780/0x780
[ 40.869580][ T419] ____sys_sendmsg+0x3dd/0x890
[ 40.869767][ T419] ? get_timestamp.constprop.0+0x380/0x380
[ 40.869990][ T419] ? __copy_msghdr+0x3c0/0x3c0
[ 40.870179][ T419] ___sys_sendmsg+0xed/0x170
[ 40.870376][ T419] ? kasan_record_aux_stack+0x8c/0xa0
[ 40.870563][ T419] ? __call_rcu_common.constprop.0+0xa8/0x630
[ 40.870798][ T419] ? copy_msghdr_from_user+0x110/0x110
[ 40.870986][ T419] ? find_held_lock+0x2b/0x80
[ 40.871182][ T419] ? __lock_acquire+0x449/0x7e0
[ 40.871376][ T419] ? find_held_lock+0x2b/0x80
[ 40.871561][ T419] ? __virt_addr_valid+0x22a/0x450
[ 40.871754][ T419] ? __lock_release+0x5d/0x170
[ 40.871945][ T419] __sys_sendmsg+0x10b/0x1a0
[ 40.872135][ T419] ? __call_rcu_common.constprop.0+0x318/0x630
[ 40.872369][ T419] ? __sys_sendmsg_sock+0x20/0x20
[ 40.872553][ T419] ? rcu_is_watching+0x12/0xb0
[ 40.872741][ T419] do_syscall_64+0xc1/0xfd0
[ 40.872928][ T419] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 40.873158][ T419] RIP: 0033:0x7f5e62ca91d7
[ 40.873377][ T419] 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
[ 40.873976][ T419] RSP: 002b:00007ffde6023ee8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 40.874283][ T419] RAX: ffffffffffffffda RBX: 00007ffde6024610 RCX: 00007f5e62ca91d7
[ 40.874572][ T419] RDX: 0000000000000000 RSI: 00007ffde6023f50 RDI: 0000000000000005
[ 40.874849][ T419] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078
[ 40.875123][ T419] R10: 00007f5e62ba5f60 R11: 0000000000000246 R12: 0000000000000002
[ 40.875425][ T419] R13: 00000000690dfb00 R14: 0000000000499600 R15: 0000000000000000
[ 40.875702][ T419]
[ 40.875851][ T419] irq event stamp: 33741
[ 40.876003][ T419] hardirqs last enabled at (33741): [] kasan_quarantine_put+0xf9/0x210
[ 40.876343][ T419] hardirqs last disabled at (33740): [] kasan_quarantine_put+0xac/0x210
[ 40.876652][ T419] softirqs last enabled at (33394): [] handle_softirqs+0x352/0x610
[ 40.876974][ T419] softirqs last disabled at (33385): [] irq_exit_rcu+0xab/0x100
[ 40.877297][ T419] ---[ end trace 0000000000000000 ]---