[ 13.618069][ T202] basename (202) used greatest stack depth: 24464 bytes left
[ 18.361080][ T230] ==================================================================
[ 18.361403][ T230] BUG: KASAN: out-of-bounds in kobject_put+0xbb/0xd0
[ 18.361632][ T230] Read of size 1 at addr ffff8880095d068c by task packetdrill/230
[ 18.361884][ T230]
[ 18.361973][ T230] CPU: 2 UID: 0 PID: 230 Comm: packetdrill Not tainted 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 18.361978][ T230] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 18.361980][ T230] Call Trace:
[ 18.361982][ T230]
[ 18.361984][ T230] dump_stack_lvl+0x82/0xc0
[ 18.361990][ T230] print_address_description.constprop.0+0x2c/0x3a0
[ 18.361999][ T230] ? kobject_put+0xbb/0xd0
[ 18.362003][ T230] print_report+0xb4/0x270
[ 18.362006][ T230] ? kobject_put+0xbb/0xd0
[ 18.362009][ T230] ? kasan_addr_to_slab+0x21/0x70
[ 18.362013][ T230] ? kobject_put+0xbb/0xd0
[ 18.362016][ T230] kasan_report+0xca/0x100
[ 18.362020][ T230] ? kobject_put+0xbb/0xd0
[ 18.362025][ T230] kobject_put+0xbb/0xd0
[ 18.362028][ T230] netdev_run_todo+0x5f0/0xc60
[ 18.362035][ T230] ? rtnl_is_locked+0x15/0x20
[ 18.362040][ T230] ? netif_state_change+0x228/0x2c0
[ 18.362043][ T230] ? call_netdevice_notifiers_info+0x100/0x100
[ 18.362046][ T230] ? generic_xdp_install+0x410/0x410
[ 18.362050][ T230] ? tun_chr_close+0xae/0x1c0
[ 18.362059][ T230] tun_chr_close+0xc0/0x1c0
[ 18.362063][ T230] __fput+0x35c/0xa70
[ 18.362071][ T230] fput_close_sync+0xdd/0x1b0
[ 18.362074][ T230] ? alloc_file_clone+0xf0/0xf0
[ 18.362079][ T230] __x64_sys_close+0x7d/0xd0
[ 18.362083][ T230] do_syscall_64+0xc1/0xfd0
[ 18.362090][ T230] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 18.362094][ T230] RIP: 0033:0x4901eb
[ 18.362098][ T230] 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
[ 18.362101][ T230] RSP: 002b:00007fff7d891550 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
[ 18.362105][ T230] RAX: ffffffffffffffda RBX: 00007fff7d891ab0 RCX: 00000000004901eb
[ 18.362108][ T230] RDX: 0000000000000002 RSI: 0000000000000002 RDI: 0000000000000005
[ 18.362109][ T230] RBP: 00007fff7d891590 R08: 0000000000000000 R09: 0000000000000000
[ 18.362111][ T230] R10: 0000000002000000 R11: 0000000000000293 R12: 00007fff7d891a28
[ 18.362113][ T230] R13: 0000000000000001 R14: 000000000054e030 R15: 0000000000000001
[ 18.362119][ T230]
[ 18.362121][ T230]
[ 18.370120][ T230] The buggy address belongs to the physical page:
[ 18.370343][ T230] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff8880095d0800 pfn:0x95d0
[ 18.370738][ T230] flags: 0x80000000000000(node=0|zone=1)
[ 18.370922][ T230] raw: 0080000000000000 0000000000000000 dead000000000122 0000000000000000
[ 18.371253][ T230] raw: ffff8880095d0800 0000000000000000 00000001ffffffff 0000000000000000
[ 18.371597][ T230] page dumped because: kasan: bad access detected
[ 18.371831][ T230]
[ 18.371915][ T230] Memory state around the buggy address:
[ 18.372095][ T230] ffff8880095d0580: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 18.372350][ T230] ffff8880095d0600: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 18.372644][ T230] >ffff8880095d0680: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 18.373043][ T230] ^
[ 18.373220][ T230] ffff8880095d0700: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 18.373488][ T230] ffff8880095d0780: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 18.373755][ T230] ==================================================================
[ 18.374077][ T230] Disabling lock debugging due to kernel taint
[ 18.374511][ T230] ------------[ cut here ]------------
[ 18.374718][ T230] refcount_t: underflow; use-after-free.
[ 18.374930][ T230] WARNING: CPU: 2 PID: 230 at lib/refcount.c:28 refcount_warn_saturate+0x16f/0x1b0
[ 18.375274][ T230] Modules linked in:
[ 18.375442][ T230] CPU: 2 UID: 0 PID: 230 Comm: packetdrill Tainted: G B 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 18.375869][ T230] Tainted: [B]=BAD_PAGE
[ 18.376021][ T230] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 18.376277][ T230] RIP: 0010:refcount_warn_saturate+0x16f/0x1b0
[ 18.376530][ T230] 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 a5 ba 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
[ 18.377192][ T230] RSP: 0018:ffffc90000ab7ce8 EFLAGS: 00010282
[ 18.377441][ T230] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[ 18.377741][ T230] RDX: 0000000000000002 RSI: 0000000000000004 RDI: 0000000000000001
[ 18.378020][ T230] RBP: 0000000000000003 R08: 0000000000000000 R09: fffffbfff767e134
[ 18.378313][ T230] R10: 0000000000000003 R11: ffffc90000ab7880 R12: 0000000000000001
[ 18.378611][ T230] R13: dffffc0000000000 R14: dead000000000122 R15: dead000000000100
[ 18.378906][ T230] FS: 000000001a6723c0(0000) GS:ffff888079b1a000(0000) knlGS:0000000000000000
[ 18.379241][ T230] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 18.379490][ T230] CR2: 00007f8133584000 CR3: 0000000009ceb001 CR4: 0000000000772ef0
[ 18.379787][ T230] PKRU: 55555554
[ 18.379936][ T230] Call Trace:
[ 18.380093][ T230]
[ 18.380213][ T230] netdev_run_todo+0x5f0/0xc60
[ 18.380425][ T230] ? rtnl_is_locked+0x15/0x20
[ 18.380640][ T230] ? netif_state_change+0x228/0x2c0
[ 18.380832][ T230] ? call_netdevice_notifiers_info+0x100/0x100
[ 18.381059][ T230] ? generic_xdp_install+0x410/0x410
[ 18.381280][ T230] ? tun_chr_close+0xae/0x1c0
[ 18.381488][ T230] tun_chr_close+0xc0/0x1c0
[ 18.381694][ T230] __fput+0x35c/0xa70
[ 18.381848][ T230] fput_close_sync+0xdd/0x1b0
[ 18.382080][ T230] ? alloc_file_clone+0xf0/0xf0
[ 18.382366][ T230] __x64_sys_close+0x7d/0xd0
[ 18.382641][ T230] do_syscall_64+0xc1/0xfd0
[ 18.382911][ T230] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 18.383239][ T230] RIP: 0033:0x4901eb
[ 18.383452][ T230] 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
[ 18.384417][ T230] RSP: 002b:00007fff7d891550 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
[ 18.384843][ T230] RAX: ffffffffffffffda RBX: 00007fff7d891ab0 RCX: 00000000004901eb
[ 18.385273][ T230] RDX: 0000000000000002 RSI: 0000000000000002 RDI: 0000000000000005
[ 18.385683][ T230] RBP: 00007fff7d891590 R08: 0000000000000000 R09: 0000000000000000
[ 18.386120][ T230] R10: 0000000002000000 R11: 0000000000000293 R12: 00007fff7d891a28
[ 18.386556][ T230] R13: 0000000000000001 R14: 000000000054e030 R15: 0000000000000001
[ 18.386978][ T230]
[ 18.387208][ T230] irq event stamp: 1819923
[ 18.387416][ T230] hardirqs last enabled at (1819923): [] irqentry_exit+0x3b/0x80
[ 18.387810][ T230] hardirqs last disabled at (1819922): [] handle_softirqs+0x47f/0x610
[ 18.388131][ T230] softirqs last enabled at (1819730): [] __tun_set_ebpf+0xc6/0x180
[ 18.388451][ T230] softirqs last disabled at (1819728): [] __tun_set_ebpf+0x91/0x180
[ 18.388776][ T230] ---[ end trace 0000000000000000 ]---