login: panic: ufsdirhash_lookup: bad offset in hash array
Starting stack trace...
panic(ffffffff82850008) at panic+0x159 sys/kern/subr_prf.c:229
ufsdirhash_lookup(fffffd80748e3d28,ffffffff8282dfdc,2,fffffd80748e3dd4,ffff8000299cc4d8,0) 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(fffffd806769e2e8,ffff8000299cc678,ffff8000299cc618) at VOP_LOOKUP+0x5c sys/kern/vfs_vops.c:85
unveil_find_cover(fffffd806769e2e8,ffff800021654d40) at unveil_find_cover+0x130 sys/kern/kern_unveil.c:277
unveil_start_relative(ffff800021654d40,ffff8000299cc9b8,fffffd806769e2e8) at unveil_start_relative+0xf6 sys/kern/kern_unveil.c:606
namei(ffff8000299cc9b8) at namei+0x453 sys/kern/vfs_lookup.c:237
vn_open(ffff8000299cc9b8,201,0) at vn_open+0x17b sys/kern/vfs_vnops.c:107
doopenat(ffff800021654d40,4,20000240,200,0,ffff8000299ccb90) at doopenat+0x26e sys/kern/vfs_syscalls.c:1126
syscall(ffff8000299ccc10) at syscall+0x4a8 sys/arch/amd64/amd64/trap.c:623
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xcfb85e0f720, count: 246
End of stack trace.
syncing disks...panic: ffs_update: bad link cnt
Starting stack trace...
panic(ffffffff8282835c) at panic+0x159 sys/kern/subr_prf.c:229
ffs_update(fffffd807c4ed000,0) at ffs_update+0x313 sys/ufs/ffs/ffs_inode.c:101
VOP_FSYNC(fffffd806b57e1c0,fffffd807f7d7888,2,ffff800021654d40) at VOP_FSYNC+0xc9 sys/kern/vfs_vops.c:311
ffs_sync_vnode(fffffd806b57e1c0,ffff8000299cc110) at ffs_sync_vnode+0x184 sys/ufs/ffs/ffs_vfsops.c:1187
vfs_mount_foreach_vnode(ffff8000006db000,ffffffff81756120,ffff8000299cc110) at vfs_mount_foreach_vnode+0x55 sys/kern/vfs_subr.c:910
ffs_sync(ffff8000006db000,2,0,fffffd807f7d7888,ffff800021654d40) at ffs_sync+0x11f sys/ufs/ffs/ffs_vfsops.c:1238
sys_sync(ffff800021654d40,0,0) at sys_sync+0xbc sys/kern/vfs_syscalls.c:536
vfs_syncwait(ffff800021654d40,1) at vfs_syncwait+0x3a
vfs_shutdown(ffff800021654d40) at vfs_shutdown+0x61 sys/kern/vfs_subr.c:1791
boot(100) at boot+0xbf sys/arch/amd64/amd64/machdep.c:901
reboot(100) at reboot+0x7b
panic(ffffffff82850008) at panic+0x179 sys/kern/subr_prf.c:231
ufsdirhash_lookup(fffffd80748e3d28,ffffffff8282dfdc,2,fffffd80748e3dd4,ffff8000299cc4d8,0) 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(fffffd806769e2e8,ffff8000299cc678,ffff8000299cc618) at VOP_LOOKUP+0x5c sys/kern/vfs_vops.c:85
unveil_find_cover(fffffd806769e2e8,ffff800021654d40) at unveil_find_cover+0x130 sys/kern/kern_unveil.c:277
unveil_start_relative(ffff800021654d40,ffff8000299cc9b8,fffffd806769e2e8) at unveil_start_relative+0xf6 sys/kern/kern_unveil.c:606
namei(ffff8000299cc9b8) at namei+0x453 sys/kern/vfs_lookup.c:237
vn_open(ffff8000299cc9b8,201,0) at vn_open+0x17b sys/kern/vfs_vnops.c:107
doopenat(ffff800021654d40,4,20000240,200,0,ffff8000299ccb90) at doopenat+0x26e sys/kern/vfs_syscalls.c:1126
syscall(ffff8000299ccc10) at syscall+0x4a8 sys/arch/amd64/amd64/trap.c:623
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xcfb85e0f720, count: 235
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 1f64d870-06f2-d8bf-7327-adc6877a2997
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