[ 17.605622][ T232] ==================================================================
[ 17.605962][ T232] BUG: KASAN: out-of-bounds in kobject_put+0xbb/0xd0
[ 17.606174][ T232] Read of size 1 at addr ffff88801071868c by task packetdrill/232
[ 17.606427][ T232]
[ 17.606513][ T232] CPU: 0 UID: 0 PID: 232 Comm: packetdrill Not tainted 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 17.606518][ T232] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 17.606520][ T232] Call Trace:
[ 17.606522][ T232]
[ 17.606525][ T232] dump_stack_lvl+0x82/0xc0
[ 17.606530][ T232] print_address_description.constprop.0+0x2c/0x3a0
[ 17.606536][ T232] ? kobject_put+0xbb/0xd0
[ 17.606540][ T232] print_report+0xb4/0x270
[ 17.606545][ T232] ? kobject_put+0xbb/0xd0
[ 17.606549][ T232] ? kasan_addr_to_slab+0x21/0x70
[ 17.606554][ T232] ? kobject_put+0xbb/0xd0
[ 17.606559][ T232] kasan_report+0xca/0x100
[ 17.606566][ T232] ? kobject_put+0xbb/0xd0
[ 17.606573][ T232] kobject_put+0xbb/0xd0
[ 17.606577][ T232] netdev_run_todo+0x5f0/0xc60
[ 17.606582][ T232] ? rtnl_is_locked+0x15/0x20
[ 17.606585][ T232] ? netif_state_change+0x228/0x2c0
[ 17.606588][ T232] ? call_netdevice_notifiers_info+0x100/0x100
[ 17.606591][ T232] ? generic_xdp_install+0x410/0x410
[ 17.606595][ T232] ? tun_chr_close+0xae/0x1c0
[ 17.606602][ T232] tun_chr_close+0xc0/0x1c0
[ 17.606606][ T232] __fput+0x35c/0xa70
[ 17.606613][ T232] fput_close_sync+0xdd/0x1b0
[ 17.606616][ T232] ? alloc_file_clone+0xf0/0xf0
[ 17.606621][ T232] __x64_sys_close+0x7d/0xd0
[ 17.606624][ T232] do_syscall_64+0xc1/0xfd0
[ 17.606630][ T232] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 17.606634][ T232] RIP: 0033:0x4901eb
[ 17.606638][ T232] 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
[ 17.606641][ T232] RSP: 002b:00007ffd335cb5d0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
[ 17.606645][ T232] RAX: ffffffffffffffda RBX: 00007ffd335cbb30 RCX: 00000000004901eb
[ 17.606647][ T232] RDX: 0000000000000002 RSI: 0000000000000002 RDI: 0000000000000005
[ 17.606649][ T232] RBP: 00007ffd335cb610 R08: 0000000000000000 R09: 0000000000000000
[ 17.606650][ T232] R10: 000000003291e8c0 R11: 0000000000000293 R12: 00007ffd335cbaa8
[ 17.606652][ T232] R13: 0000000000000001 R14: 000000000054e030 R15: 0000000000000001
[ 17.606658][ T232]
[ 17.606659][ T232]
[ 17.614437][ T232] The buggy address belongs to the physical page:
[ 17.614673][ T232] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88801071bd00 pfn:0x10718
[ 17.615053][ T232] flags: 0x80000000000000(node=0|zone=1)
[ 17.615235][ T232] raw: 0080000000000000 0000000000000000 dead000000000122 0000000000000000
[ 17.615568][ T232] raw: ffff88801071bd00 0000000000000000 00000001ffffffff 0000000000000000
[ 17.615894][ T232] page dumped because: kasan: bad access detected
[ 17.616121][ T232]
[ 17.616212][ T232] Memory state around the buggy address:
[ 17.616472][ T232] ffff888010718580: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 17.616736][ T232] ffff888010718600: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 17.617010][ T232] >ffff888010718680: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 17.617361][ T232] ^
[ 17.617521][ T232] ffff888010718700: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 17.617774][ T232] ffff888010718780: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 17.618104][ T232] ==================================================================
[ 17.618390][ T232] Disabling lock debugging due to kernel taint
[ 17.618641][ T232] ------------[ cut here ]------------
[ 17.619005][ T232] refcount_t: underflow; use-after-free.
[ 17.619194][ T232] WARNING: CPU: 0 PID: 232 at lib/refcount.c:28 refcount_warn_saturate+0x16f/0x1b0
[ 17.619488][ T232] Modules linked in:
[ 17.619634][ T232] CPU: 0 UID: 0 PID: 232 Comm: packetdrill Tainted: G B 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 17.620017][ T232] Tainted: [B]=BAD_PAGE
[ 17.620143][ T232] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 17.620377][ T232] RIP: 0010:refcount_warn_saturate+0x16f/0x1b0
[ 17.620609][ T232] 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 45 a5 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
[ 17.621291][ T232] RSP: 0018:ffffc90000b37ce8 EFLAGS: 00010282
[ 17.621604][ T232] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[ 17.621854][ T232] RDX: 0000000000000002 RSI: 0000000000000004 RDI: 0000000000000001
[ 17.622109][ T232] RBP: 0000000000000003 R08: 0000000000000000 R09: fffffbfff4bbe134
[ 17.622438][ T232] R10: 0000000000000003 R11: ffffc90000b37880 R12: 0000000000000001
[ 17.622710][ T232] R13: dffffc0000000000 R14: dead000000000122 R15: dead000000000100
[ 17.623059][ T232] FS: 00000000329003c0(0000) GS:ffff88808f01a000(0000) knlGS:0000000000000000
[ 17.623349][ T232] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 17.623621][ T232] CR2: 00007f49aebb1000 CR3: 000000000f47e005 CR4: 0000000000772ef0
[ 17.623967][ T232] PKRU: 55555554
[ 17.624089][ T232] Call Trace:
[ 17.624216][ T232]
[ 17.624300][ T232] netdev_run_todo+0x5f0/0xc60
[ 17.624474][ T232] ? rtnl_is_locked+0x15/0x20
[ 17.624737][ T232] ? netif_state_change+0x228/0x2c0
[ 17.624907][ T232] ? call_netdevice_notifiers_info+0x100/0x100
[ 17.625110][ T232] ? generic_xdp_install+0x410/0x410
[ 17.625275][ T232] ? tun_chr_close+0xae/0x1c0
[ 17.625527][ T232] tun_chr_close+0xc0/0x1c0
[ 17.625707][ T232] __fput+0x35c/0xa70
[ 17.625836][ T232] fput_close_sync+0xdd/0x1b0
[ 17.626011][ T232] ? alloc_file_clone+0xf0/0xf0
[ 17.626260][ T232] __x64_sys_close+0x7d/0xd0
[ 17.626428][ T232] do_syscall_64+0xc1/0xfd0
[ 17.626603][ T232] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 17.626808][ T232] RIP: 0033:0x4901eb
[ 17.626954][ T232] 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
[ 17.627563][ T232] RSP: 002b:00007ffd335cb5d0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
[ 17.627916][ T232] RAX: ffffffffffffffda RBX: 00007ffd335cbb30 RCX: 00000000004901eb
[ 17.628170][ T232] RDX: 0000000000000002 RSI: 0000000000000002 RDI: 0000000000000005
[ 17.628513][ T232] RBP: 00007ffd335cb610 R08: 0000000000000000 R09: 0000000000000000
[ 17.628797][ T232] R10: 000000003291e8c0 R11: 0000000000000293 R12: 00007ffd335cbaa8
[ 17.629053][ T232] R13: 0000000000000001 R14: 000000000054e030 R15: 0000000000000001
[ 17.629394][ T232]
[ 17.629529][ T232] irq event stamp: 2048673
[ 17.629699][ T232] hardirqs last enabled at (2048673): [] irqentry_exit+0x3b/0x80
[ 17.630135][ T232] hardirqs last disabled at (2048672): [] handle_softirqs+0x47f/0x610
[ 17.630426][ T232] softirqs last enabled at (2048482): [] __tun_set_ebpf+0xc6/0x180
[ 17.630725][ T232] softirqs last disabled at (2048480): [] __tun_set_ebpf+0x91/0x180
[ 17.631180][ T232] ---[ end trace 0000000000000000 ]---