[ 16.795185][ T233] ==================================================================
[ 16.795574][ T233] BUG: KASAN: out-of-bounds in kobject_put+0xbb/0xd0
[ 16.795822][ T233] Read of size 1 at addr ffff88800582868c by task packetdrill/233
[ 16.796121][ T233]
[ 16.796218][ T233] CPU: 2 UID: 0 PID: 233 Comm: packetdrill Not tainted 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 16.796224][ T233] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 16.796226][ T233] Call Trace:
[ 16.796229][ T233]
[ 16.796231][ T233] dump_stack_lvl+0x82/0xc0
[ 16.796236][ T233] print_address_description.constprop.0+0x2c/0x3a0
[ 16.796243][ T233] ? kobject_put+0xbb/0xd0
[ 16.796247][ T233] print_report+0xb4/0x270
[ 16.796250][ T233] ? kobject_put+0xbb/0xd0
[ 16.796254][ T233] ? kasan_addr_to_slab+0x21/0x70
[ 16.796257][ T233] ? kobject_put+0xbb/0xd0
[ 16.796260][ T233] kasan_report+0xca/0x100
[ 16.796264][ T233] ? kobject_put+0xbb/0xd0
[ 16.796269][ T233] kobject_put+0xbb/0xd0
[ 16.796273][ T233] netdev_run_todo+0x5f0/0xc60
[ 16.796277][ T233] ? rtnl_is_locked+0x15/0x20
[ 16.796281][ T233] ? netif_state_change+0x228/0x2c0
[ 16.796284][ T233] ? call_netdevice_notifiers_info+0x100/0x100
[ 16.796286][ T233] ? generic_xdp_install+0x410/0x410
[ 16.796290][ T233] ? tun_chr_close+0xae/0x1c0
[ 16.796297][ T233] tun_chr_close+0xc0/0x1c0
[ 16.796301][ T233] __fput+0x35c/0xa70
[ 16.796308][ T233] fput_close_sync+0xdd/0x1b0
[ 16.796311][ T233] ? alloc_file_clone+0xf0/0xf0
[ 16.796316][ T233] __x64_sys_close+0x7d/0xd0
[ 16.796320][ T233] do_syscall_64+0xc1/0xfd0
[ 16.796325][ T233] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 16.796329][ T233] RIP: 0033:0x4901eb
[ 16.796334][ T233] Code: 03 00 00 00 0f 05 48 3d 00 f0 ff ff 77 41 c3 48 83 ec 18 89 7c 24 0c e8 c3 78 04 00 8b 7c 24 0c 41 89 c0 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 44 89 c7 89 44 24 0c e8 21 79 04 00 8b 44
[ 16.796337][ T233] RSP: 002b:00007ffed3f4eb30 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
[ 16.796341][ T233] RAX: ffffffffffffffda RBX: 00007ffed3f4f090 RCX: 00000000004901eb
[ 16.796343][ T233] RDX: 0000000000000002 RSI: 0000000000000002 RDI: 0000000000000005
[ 16.796345][ T233] RBP: 00007ffed3f4eb70 R08: 0000000000000000 R09: 0000000000000000
[ 16.796346][ T233] R10: 0000000039f84200 R11: 0000000000000293 R12: 00007ffed3f4f008
[ 16.796348][ T233] R13: 0000000000000001 R14: 000000000054e030 R15: 0000000000000001
[ 16.796354][ T233]
[ 16.796355][ T233]
[ 16.803711][ T233] The buggy address belongs to the physical page:
[ 16.803953][ T233] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88800582c640 pfn:0x5828
[ 16.804312][ T233] flags: 0x80000000000000(node=0|zone=1)
[ 16.804516][ T233] raw: 0080000000000000 0000000000000000 dead000000000122 0000000000000000
[ 16.804844][ T233] raw: ffff88800582c640 0000000000000000 00000001ffffffff 0000000000000000
[ 16.805153][ T233] page dumped because: kasan: bad access detected
[ 16.805379][ T233]
[ 16.805466][ T233] Memory state around the buggy address:
[ 16.805641][ T233] ffff888005828580: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 16.805895][ T233] ffff888005828600: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 16.806150][ T233] >ffff888005828680: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 16.806404][ T233] ^
[ 16.806598][ T233] ffff888005828700: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 16.806854][ T233] ffff888005828780: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 16.807134][ T233] ==================================================================
[ 16.807505][ T233] Disabling lock debugging due to kernel taint
[ 16.807770][ T233] ------------[ cut here ]------------
[ 16.808005][ T233] refcount_t: underflow; use-after-free.
[ 16.808232][ T233] WARNING: CPU: 2 PID: 233 at lib/refcount.c:28 refcount_warn_saturate+0x16f/0x1b0
[ 16.808603][ T233] Modules linked in:
[ 16.808799][ T233] CPU: 2 UID: 0 PID: 233 Comm: packetdrill Tainted: G B 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 16.809219][ T233] Tainted: [B]=BAD_PAGE
[ 16.809384][ T233] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 16.809637][ T233] RIP: 0010:refcount_warn_saturate+0x16f/0x1b0
[ 16.809908][ T233] Code: 3f 92 02 80 fb 01 0f 87 bb b9 d9 fe 83 e3 01 0f 85 51 ff ff ff c6 05 5e 3f 92 02 01 90 48 c7 c7 20 8d 25 9e 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
[ 16.810566][ T233] RSP: 0018:ffffc90000af7ce8 EFLAGS: 00010282
[ 16.810835][ T233] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[ 16.811120][ T233] RDX: 0000000000000002 RSI: 0000000000000004 RDI: 0000000000000001
[ 16.811418][ T233] RBP: 0000000000000003 R08: 0000000000000000 R09: fffffbfff3d7e134
[ 16.811704][ T233] R10: 0000000000000003 R11: ffffc90000af7880 R12: 0000000000000001
[ 16.812019][ T233] R13: dffffc0000000000 R14: dead000000000122 R15: dead000000000100
[ 16.812307][ T233] FS: 0000000039f713c0(0000) GS:ffff88809631a000(0000) knlGS:0000000000000000
[ 16.812645][ T233] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 16.812907][ T233] CR2: 00007f5615c10000 CR3: 0000000004c5b003 CR4: 0000000000772ef0
[ 16.813210][ T233] PKRU: 55555554
[ 16.813456][ T233] Call Trace:
[ 16.813615][ T233]
[ 16.813740][ T233] netdev_run_todo+0x5f0/0xc60
[ 16.813958][ T233] ? rtnl_is_locked+0x15/0x20
[ 16.814163][ T233] ? netif_state_change+0x228/0x2c0
[ 16.814516][ T233] ? call_netdevice_notifiers_info+0x100/0x100
[ 16.814760][ T233] ? generic_xdp_install+0x410/0x410
[ 16.814969][ T233] ? tun_chr_close+0xae/0x1c0
[ 16.815169][ T233] tun_chr_close+0xc0/0x1c0
[ 16.815448][ T233] __fput+0x35c/0xa70
[ 16.815603][ T233] fput_close_sync+0xdd/0x1b0
[ 16.815809][ T233] ? alloc_file_clone+0xf0/0xf0
[ 16.816002][ T233] __x64_sys_close+0x7d/0xd0
[ 16.816288][ T233] do_syscall_64+0xc1/0xfd0
[ 16.816482][ T233] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 16.816713][ T233] RIP: 0033:0x4901eb
[ 16.816884][ T233] Code: 03 00 00 00 0f 05 48 3d 00 f0 ff ff 77 41 c3 48 83 ec 18 89 7c 24 0c e8 c3 78 04 00 8b 7c 24 0c 41 89 c0 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 44 89 c7 89 44 24 0c e8 21 79 04 00 8b 44
[ 16.817598][ T233] RSP: 002b:00007ffed3f4eb30 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
[ 16.817904][ T233] RAX: ffffffffffffffda RBX: 00007ffed3f4f090 RCX: 00000000004901eb
[ 16.818203][ T233] RDX: 0000000000000002 RSI: 0000000000000002 RDI: 0000000000000005
[ 16.818519][ T233] RBP: 00007ffed3f4eb70 R08: 0000000000000000 R09: 0000000000000000
[ 16.818920][ T233] R10: 0000000039f84200 R11: 0000000000000293 R12: 00007ffed3f4f008
[ 16.819210][ T233] R13: 0000000000000001 R14: 000000000054e030 R15: 0000000000000001
[ 16.819590][ T233]
[ 16.819786][ T233] irq event stamp: 2058599
[ 16.819980][ T233] hardirqs last enabled at (2058599): [] irqentry_exit+0x3b/0x80
[ 16.820305][ T233] hardirqs last disabled at (2058598): [] handle_softirqs+0x47f/0x610
[ 16.820708][ T233] softirqs last enabled at (2058440): [] handle_softirqs+0x352/0x610
[ 16.821038][ T233] softirqs last disabled at (2058433): [] irq_exit_rcu+0xab/0x100
[ 16.821440][ T233] ---[ end trace 0000000000000000 ]---