[ 17.987866][ T268] gre: GRE over IPv4 demultiplexer driver
[ 18.006125][ T268] ip_gre: GRE over IPv4 tunneling driver
[ 20.124907][ T294] ==================================================================
[ 20.125338][ T294] BUG: KASAN: slab-use-after-free in kobject_put+0xbb/0xd0
[ 20.125651][ T294] Read of size 1 at addr ffff8880056ac6c4 by task ip/294
[ 20.125953][ T294]
[ 20.126055][ T294] CPU: 0 UID: 0 PID: 294 Comm: ip Not tainted 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 20.126060][ T294] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 20.126063][ T294] Call Trace:
[ 20.126065][ T294]
[ 20.126067][ T294] dump_stack_lvl+0x82/0xc0
[ 20.126074][ T294] print_address_description.constprop.0+0x2c/0x3a0
[ 20.126081][ T294] ? kobject_put+0xbb/0xd0
[ 20.126085][ T294] print_report+0xb4/0x270
[ 20.126088][ T294] ? kobject_put+0xbb/0xd0
[ 20.126091][ T294] ? kasan_addr_to_slab+0x21/0x70
[ 20.126097][ T294] ? kobject_put+0xbb/0xd0
[ 20.126102][ T294] kasan_report+0xca/0x100
[ 20.126108][ T294] ? kobject_put+0xbb/0xd0
[ 20.126117][ T294] kobject_put+0xbb/0xd0
[ 20.126122][ T294] netdev_run_todo+0x5f0/0xc60
[ 20.126130][ T294] ? dev_ingress_queue_create+0x190/0x190
[ 20.126136][ T294] ? generic_xdp_install+0x410/0x410
[ 20.126140][ T294] ? unregister_netdevice_many+0x20/0x20
[ 20.126146][ T294] ? net_generic+0xb1/0x1f0
[ 20.126153][ T294] ? net_generic+0xbb/0x1f0
[ 20.126160][ T294] rtnl_dellink+0x350/0xa30
[ 20.126170][ T294] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 20.126203][ T294] ? find_held_lock+0x2b/0x80
[ 20.126212][ T294] ? __lock_acquire+0x449/0x7e0
[ 20.126222][ T294] ? find_held_lock+0x2b/0x80
[ 20.126229][ T294] ? rtnetlink_rcv_msg+0x6e6/0xc00
[ 20.126233][ T294] ? __lock_release+0x5d/0x170
[ 20.126239][ T294] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 20.126244][ T294] rtnetlink_rcv_msg+0x709/0xc00
[ 20.126251][ T294] ? rtnl_port_fill+0x890/0x890
[ 20.126256][ T294] ? __lock_acquire+0x449/0x7e0
[ 20.126269][ T294] netlink_rcv_skb+0x121/0x340
[ 20.126276][ T294] ? rtnl_port_fill+0x890/0x890
[ 20.126283][ T294] ? netlink_ack+0xdf0/0xdf0
[ 20.126295][ T294] ? netlink_deliver_tap+0x13e/0x340
[ 20.126300][ T294] ? netlink_deliver_tap+0xc3/0x340
[ 20.126307][ T294] netlink_unicast+0x4aa/0x780
[ 20.126314][ T294] ? netlink_attachskb+0x810/0x810
[ 20.126320][ T294] ? __lock_acquire+0x449/0x7e0
[ 20.126327][ T294] netlink_sendmsg+0x714/0xbd0
[ 20.126333][ T294] ? netlink_unicast+0x780/0x780
[ 20.126336][ T294] ? __import_iovec+0x230/0x3b0
[ 20.126341][ T294] ? netlink_unicast+0x780/0x780
[ 20.126344][ T294] ____sys_sendmsg+0x3dd/0x890
[ 20.126348][ T294] ? get_timestamp.constprop.0+0x370/0x370
[ 20.126351][ T294] ? __copy_msghdr+0x3c0/0x3c0
[ 20.126358][ T294] ___sys_sendmsg+0xed/0x170
[ 20.126361][ T294] ? kasan_record_aux_stack+0x8c/0xa0
[ 20.126365][ T294] ? __call_rcu_common.constprop.0+0xa8/0x630
[ 20.126369][ T294] ? copy_msghdr_from_user+0x110/0x110
[ 20.126374][ T294] ? find_held_lock+0x2b/0x80
[ 20.126379][ T294] ? __lock_acquire+0x449/0x7e0
[ 20.126383][ T294] ? find_held_lock+0x2b/0x80
[ 20.126387][ T294] ? __virt_addr_valid+0x22a/0x450
[ 20.126393][ T294] ? __lock_release+0x5d/0x170
[ 20.126398][ T294] __sys_sendmsg+0x10b/0x1a0
[ 20.126401][ T294] ? __call_rcu_common.constprop.0+0x318/0x630
[ 20.126404][ T294] ? __sys_sendmsg_sock+0x20/0x20
[ 20.126415][ T294] ? rcu_is_watching+0x12/0xb0
[ 20.126424][ T294] do_syscall_64+0xc1/0xfd0
[ 20.126431][ T294] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 20.126436][ T294] RIP: 0033:0x7ff4fb41e1d7
[ 20.126443][ T294] 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
[ 20.126446][ T294] RSP: 002b:00007fff860a8f28 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 20.126450][ T294] RAX: ffffffffffffffda RBX: 00007fff860a9660 RCX: 00007ff4fb41e1d7
[ 20.126453][ T294] RDX: 0000000000000000 RSI: 00007fff860a8f90 RDI: 0000000000000005
[ 20.126454][ T294] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078
[ 20.126456][ T294] R10: 00007ff4fb31a510 R11: 0000000000000246 R12: 0000000000000002
[ 20.126458][ T294] R13: 00000000690df12f R14: 0000000000499600 R15: 0000000000000000
[ 20.126464][ T294]
[ 20.126466][ T294]
[ 20.142057][ T294] Allocated by task 267:
[ 20.142211][ T294] kasan_save_stack+0x24/0x40
[ 20.142388][ T294] kasan_save_track+0x14/0x30
[ 20.142566][ T294] __kasan_kmalloc+0x7b/0x90
[ 20.142761][ T294] __kvmalloc_node_noprof+0x2e5/0x8e0
[ 20.142949][ T294] alloc_netdev_mqs+0x7d/0x1370
[ 20.143183][ T294] rtnl_create_link+0xa9e/0xe20
[ 20.143352][ T294] rtnl_newlink_create+0x203/0x8f0
[ 20.143532][ T294] __rtnl_newlink+0x231/0xa30
[ 20.143736][ T294] rtnl_newlink+0x693/0xa60
[ 20.143924][ T294] rtnetlink_rcv_msg+0x709/0xc00
[ 20.144123][ T294] netlink_rcv_skb+0x121/0x340
[ 20.144317][ T294] netlink_unicast+0x4aa/0x780
[ 20.144507][ T294] netlink_sendmsg+0x714/0xbd0
[ 20.144706][ T294] ____sys_sendmsg+0x3dd/0x890
[ 20.144889][ T294] ___sys_sendmsg+0xed/0x170
[ 20.145056][ T294] __sys_sendmsg+0x10b/0x1a0
[ 20.145233][ T294] do_syscall_64+0xc1/0xfd0
[ 20.145408][ T294] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 20.145648][ T294]
[ 20.145790][ T294] Freed by task 294:
[ 20.145939][ T294] kasan_save_stack+0x24/0x40
[ 20.146127][ T294] kasan_save_track+0x14/0x30
[ 20.146308][ T294] __kasan_save_free_info+0x3b/0x60
[ 20.146503][ T294] __kasan_slab_free+0x3f/0x60
[ 20.146701][ T294] kfree+0x21d/0x540
[ 20.146855][ T294] device_release+0x9c/0x210
[ 20.147040][ T294] kobject_cleanup+0xfe/0x360
[ 20.147223][ T294] netdev_run_todo+0x81f/0xc60
[ 20.147403][ T294] rtnl_dellink+0x350/0xa30
[ 20.147594][ T294] rtnetlink_rcv_msg+0x709/0xc00
[ 20.147795][ T294] netlink_rcv_skb+0x121/0x340
[ 20.147977][ T294] netlink_unicast+0x4aa/0x780
[ 20.148159][ T294] netlink_sendmsg+0x714/0xbd0
[ 20.148348][ T294] ____sys_sendmsg+0x3dd/0x890
[ 20.148540][ T294] ___sys_sendmsg+0xed/0x170
[ 20.148740][ T294] __sys_sendmsg+0x10b/0x1a0
[ 20.148925][ T294] do_syscall_64+0xc1/0xfd0
[ 20.149100][ T294] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 20.149321][ T294]
[ 20.149412][ T294] The buggy address belongs to the object at ffff8880056ac000
[ 20.149412][ T294] which belongs to the cache kmalloc-4k of size 4096
[ 20.149915][ T294] The buggy address is located 1732 bytes inside of
[ 20.149915][ T294] freed 4096-byte region [ffff8880056ac000, ffff8880056ad000)
[ 20.150340][ T294]
[ 20.150444][ T294] The buggy address belongs to the physical page:
[ 20.150697][ T294] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x56a8
[ 20.151035][ T294] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[ 20.151309][ T294] flags: 0x80000000000040(head|node=0|zone=1)
[ 20.151555][ T294] page_type: f5(slab)
[ 20.151729][ T294] raw: 0080000000000040 ffff888001043700 ffffea00002d8210 ffffea000023a010
[ 20.152068][ T294] raw: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 20.152409][ T294] head: 0080000000000040 ffff888001043700 ffffea00002d8210 ffffea000023a010
[ 20.152827][ T294] head: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 20.153167][ T294] head: 0080000000000003 ffffea000015aa01 00000000ffffffff 00000000ffffffff
[ 20.153498][ T294] head: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
[ 20.153856][ T294] page dumped because: kasan: bad access detected
[ 20.154078][ T294]
[ 20.154170][ T294] Memory state around the buggy address:
[ 20.154347][ T294] ffff8880056ac580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 20.154623][ T294] ffff8880056ac600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 20.154904][ T294] >ffff8880056ac680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 20.155173][ T294] ^
[ 20.155388][ T294] ffff8880056ac700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 20.155665][ T294] ffff8880056ac780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 20.155945][ T294] ==================================================================
[ 20.156251][ T294] Disabling lock debugging due to kernel taint
[ 20.156477][ T294] ------------[ cut here ]------------
[ 20.156659][ T294] refcount_t: underflow; use-after-free.
[ 20.156895][ T294] WARNING: CPU: 0 PID: 294 at lib/refcount.c:28 refcount_warn_saturate+0x16f/0x1b0
[ 20.157206][ T294] Modules linked in: ip_gre gre
[ 20.157399][ T294] CPU: 0 UID: 0 PID: 294 Comm: ip Tainted: G B 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 20.157844][ T294] Tainted: [B]=BAD_PAGE
[ 20.157981][ T294] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 20.158196][ T294] RIP: 0010:refcount_warn_saturate+0x16f/0x1b0
[ 20.158426][ T294] 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 e5 ad 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
[ 20.159091][ T294] RSP: 0018:ffffc900005f71f0 EFLAGS: 00010286
[ 20.159312][ T294] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[ 20.159579][ T294] RDX: 0000000000000002 RSI: 0000000000000004 RDI: 0000000000000001
[ 20.159872][ T294] RBP: 0000000000000003 R08: 0000000000000000 R09: fffffbfff5dc0934
[ 20.160142][ T294] R10: 0000000000000003 R11: ffffc900005f6d80 R12: 0000000000000001
[ 20.160405][ T294] R13: dffffc0000000000 R14: dead000000000122 R15: dead000000000100
[ 20.160714][ T294] FS: 00007ff4fb250800(0000) GS:ffff8880bcd08000(0000) knlGS:0000000000000000
[ 20.161053][ T294] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 20.161281][ T294] CR2: 000055d1187dadec CR3: 000000000b42b002 CR4: 0000000000772ef0
[ 20.161556][ T294] PKRU: 55555554
[ 20.161735][ T294] Call Trace:
[ 20.161881][ T294]
[ 20.161970][ T294] netdev_run_todo+0x5f0/0xc60
[ 20.162174][ T294] ? dev_ingress_queue_create+0x190/0x190
[ 20.162351][ T294] ? generic_xdp_install+0x410/0x410
[ 20.162539][ T294] ? unregister_netdevice_many+0x20/0x20
[ 20.162780][ T294] ? net_generic+0xb1/0x1f0
[ 20.162972][ T294] ? net_generic+0xbb/0x1f0
[ 20.163155][ T294] rtnl_dellink+0x350/0xa30
[ 20.163337][ T294] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 20.163584][ T294] ? find_held_lock+0x2b/0x80
[ 20.163815][ T294] ? __lock_acquire+0x449/0x7e0
[ 20.163997][ T294] ? find_held_lock+0x2b/0x80
[ 20.164194][ T294] ? rtnetlink_rcv_msg+0x6e6/0xc00
[ 20.164381][ T294] ? __lock_release+0x5d/0x170
[ 20.164566][ T294] ? valid_bridge_getlink_req.constprop.0+0x640/0x640
[ 20.164850][ T294] rtnetlink_rcv_msg+0x709/0xc00
[ 20.165030][ T294] ? rtnl_port_fill+0x890/0x890
[ 20.165204][ T294] ? __lock_acquire+0x449/0x7e0
[ 20.165380][ T294] netlink_rcv_skb+0x121/0x340
[ 20.165577][ T294] ? rtnl_port_fill+0x890/0x890
[ 20.165814][ T294] ? netlink_ack+0xdf0/0xdf0
[ 20.165988][ T294] ? netlink_deliver_tap+0x13e/0x340
[ 20.166156][ T294] ? netlink_deliver_tap+0xc3/0x340
[ 20.166322][ T294] netlink_unicast+0x4aa/0x780
[ 20.166508][ T294] ? netlink_attachskb+0x810/0x810
[ 20.166703][ T294] ? __lock_acquire+0x449/0x7e0
[ 20.166902][ T294] netlink_sendmsg+0x714/0xbd0
[ 20.167084][ T294] ? netlink_unicast+0x780/0x780
[ 20.167259][ T294] ? __import_iovec+0x230/0x3b0
[ 20.167443][ T294] ? netlink_unicast+0x780/0x780
[ 20.167622][ T294] ____sys_sendmsg+0x3dd/0x890
[ 20.167847][ T294] ? get_timestamp.constprop.0+0x370/0x370
[ 20.168066][ T294] ? __copy_msghdr+0x3c0/0x3c0
[ 20.168242][ T294] ___sys_sendmsg+0xed/0x170
[ 20.168421][ T294] ? kasan_record_aux_stack+0x8c/0xa0
[ 20.168620][ T294] ? __call_rcu_common.constprop.0+0xa8/0x630
[ 20.168896][ T294] ? copy_msghdr_from_user+0x110/0x110
[ 20.169136][ T294] ? find_held_lock+0x2b/0x80
[ 20.169314][ T294] ? __lock_acquire+0x449/0x7e0
[ 20.169503][ T294] ? find_held_lock+0x2b/0x80
[ 20.169706][ T294] ? __virt_addr_valid+0x22a/0x450
[ 20.169908][ T294] ? __lock_release+0x5d/0x170
[ 20.170097][ T294] __sys_sendmsg+0x10b/0x1a0
[ 20.170272][ T294] ? __call_rcu_common.constprop.0+0x318/0x630
[ 20.170541][ T294] ? __sys_sendmsg_sock+0x20/0x20
[ 20.170748][ T294] ? rcu_is_watching+0x12/0xb0
[ 20.170963][ T294] do_syscall_64+0xc1/0xfd0
[ 20.171137][ T294] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 20.171346][ T294] RIP: 0033:0x7ff4fb41e1d7
[ 20.171545][ T294] 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
[ 20.172292][ T294] RSP: 002b:00007fff860a8f28 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 20.172668][ T294] RAX: ffffffffffffffda RBX: 00007fff860a9660 RCX: 00007ff4fb41e1d7
[ 20.173080][ T294] RDX: 0000000000000000 RSI: 00007fff860a8f90 RDI: 0000000000000005
[ 20.173426][ T294] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078
[ 20.173834][ T294] R10: 00007ff4fb31a510 R11: 0000000000000246 R12: 0000000000000002
[ 20.174204][ T294] R13: 00000000690df12f R14: 0000000000499600 R15: 0000000000000000
[ 20.174614][ T294]
[ 20.174835][ T294] irq event stamp: 50411
[ 20.175031][ T294] hardirqs last enabled at (50411): [] irqentry_exit+0x3b/0x80
[ 20.175507][ T294] hardirqs last disabled at (50410): [] handle_softirqs+0x47f/0x610
[ 20.175979][ T294] softirqs last enabled at (50302): [] handle_softirqs+0x352/0x610
[ 20.176449][ T294] softirqs last disabled at (50295): [] irq_exit_rcu+0xab/0x100
[ 20.176930][ T294] ---[ end trace 0000000000000000 ]---
[ 20.200129][ T294] ip (294) used greatest stack depth: 24488 bytes left
[ 48.513472][ T762] ip6_gre: GRE over IPv6 tunneling driver