login: panic: ufsdirhash_lookup: bad offset in hash array
Starting stack trace...
panic(ffffffff8287a728) at panic+0x16f sys/kern/subr_prf.c:229
ufsdirhash_lookup(fffffd8075ae9888,ffff80002a208400,1,fffffd8075ae9954,ffff800037484208,0) at ufsdirhash_lookup+0x8b8 sys/ufs/ufs/ufs_dirhash.c:343
ufs_lookup() at ufs_lookup+0xc15 sys/ufs/ufs/ufs_lookup.c:216
VOP_LOOKUP(fffffd807b82e1f8,ffff800037484688,ffff8000374846b8) at VOP_LOOKUP+0x5c sys/kern/vfs_vops.c:85
vfs_lookup(ffff800037484658) at vfs_lookup+0x6e2 sys/kern/vfs_lookup.c:566
namei(ffff800037484658) at namei+0x55a sys/kern/vfs_lookup.c:250
vn_open(ffff800037484658,201,0) at vn_open+0x17b sys/kern/vfs_vnops.c:107
doopenat(ffff80002a25e2b0,4,20000280,200,0,ffff800037484830) at doopenat+0x26e sys/kern/vfs_syscalls.c:1126
syscall(ffff8000374848b0) at syscall+0x4e6 sys/arch/amd64/amd64/trap.c:606
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x99ed0933360, count: 247
End of stack trace.
syncing disks...panic: ffs_update: bad link cnt
Starting stack trace...
panic(ffffffff8284f3e9) at panic+0x16f sys/kern/subr_prf.c:229
ffs_update(fffffd807cf7d778,0) at ffs_update+0x313 sys/ufs/ffs/ffs_inode.c:101
VOP_FSYNC(fffffd8070787b40,fffffd807f7d6888,2,ffff80002a25e2b0) at VOP_FSYNC+0xcf sys/kern/vfs_vops.c:311
ffs_sync_vnode(fffffd8070787b40,ffff800037483e30) at ffs_sync_vnode+0x184 sys/ufs/ffs/ffs_vfsops.c:1187
vfs_mount_foreach_vnode(ffff8000006d7c00,ffffffff82379280,ffff800037483e30) at vfs_mount_foreach_vnode+0x55 sys/kern/vfs_subr.c:910
ffs_sync(ffff8000006d7c00,2,0,fffffd807f7d6888,ffff80002a25e2b0) at ffs_sync+0x11f sys/ufs/ffs/ffs_vfsops.c:1238
sys_sync(ffff80002a25e2b0,0,0) at sys_sync+0xbc sys/kern/vfs_syscalls.c:536
vfs_syncwait(ffff80002a25e2b0,1) at vfs_syncwait+0x3a
vfs_shutdown(ffff80002a25e2b0) at vfs_shutdown+0x61 sys/kern/vfs_subr.c:1791
boot(100) at boot+0xc5 sys/arch/amd64/amd64/machdep.c:901
reboot(100) at reboot+0x81
panic(ffffffff8287a728) at panic+0x18f sys/kern/subr_prf.c:231
ufsdirhash_lookup(fffffd8075ae9888,ffff80002a208400,1,fffffd8075ae9954,ffff800037484208,0) at ufsdirhash_lookup+0x8b8 sys/ufs/ufs/ufs_dirhash.c:343
ufs_lookup() at ufs_lookup+0xc15 sys/ufs/ufs/ufs_lookup.c:216
VOP_LOOKUP(fffffd807b82e1f8,ffff800037484688,ffff8000374846b8) at VOP_LOOKUP+0x5c sys/kern/vfs_vops.c:85
vfs_lookup(ffff800037484658) at vfs_lookup+0x6e2 sys/kern/vfs_lookup.c:566
namei(ffff800037484658) at namei+0x55a sys/kern/vfs_lookup.c:250
vn_open(ffff800037484658,201,0) at vn_open+0x17b sys/kern/vfs_vnops.c:107
doopenat(ffff80002a25e2b0,4,20000280,200,0,ffff800037484830) at doopenat+0x26e sys/kern/vfs_syscalls.c:1126
syscall(ffff8000374848b0) at syscall+0x4e6 sys/arch/amd64/amd64/trap.c:606
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x99ed0933360, count: 236
End of stack trace.

dump to dev 4,1 not possible
rebooting...
SeaBIOS (version 1.8.2-google)
Total RAM Size = 0x0000000080000000 = 2048 MiB
CPUs found: 2     Max CPUs supported: 2
SeaBIOS (version 1.8.2-google)
Machine UUID dc1537e2-3f8b-09d0-7a97-ada6c38139e5
found virtio-scsi at 0:3
virtio-scsi vendor='Google' product='PersistentDisk' rev='1' type=0 removable=0
virtio-scsi blksize=512 sectors=4194304 = 2048 MiB
drive 0x000f2820: PCHS=0/0/0 translation=lba LCHS=520/128/63 s=4194304
Sending Seabios boot VM event.
Booting from Hard Disk 0...
>> OpenBSD/amd64 BOOT 3.65
boot> set $maxwidth = 0
set: syntax error
boot> show panic
boot: illegal argument panic
boot> trace
boot> show registers
boot> show proc
boot> ps
boot> show all locks
boot> show malloc
boot> show all pools
boot> machine ddbcpu 0
machine: syntax error
boot> trace
boot> machine ddbcpu 1
machine: syntax error
boot> trace