panic: ufsdirhash_lookup: bad offset in hash array
Starting stack trace...
panic(ffffffff82920051) at panic+0x159 sys/kern/subr_prf.c:229
ufsdirhash_lookup(fffffd80648f81f0,ffffffff828fef05,2,fffffd80648f829c,ffff800035dc7458,0) at ufsdirhash_lookup+0x8b8 sys/ufs/ufs/ufs_dirhash.c:342
ufs_lookup() at ufs_lookup+0xbb6 sys/ufs/ufs/ufs_lookup.c:214
VOP_LOOKUP(fffffd806901c298,ffff800035dc75f8,ffff800035dc7598) at VOP_LOOKUP+0x5c sys/kern/vfs_vops.c:85
unveil_find_cover(fffffd806901c298,ffff80002a6dd550) at unveil_find_cover+0x130 sys/kern/kern_unveil.c:277
unveil_start_relative(ffff80002a6dd550,ffff800035dc7938,fffffd806901c298) at unveil_start_relative+0xf6 sys/kern/kern_unveil.c:606
namei(ffff800035dc7938) at namei+0x453 sys/kern/vfs_lookup.c:237
vn_open(ffff800035dc7938,201,0) at vn_open+0x17b sys/kern/vfs_vnops.c:107
doopenat(ffff80002a6dd550,4,200003c0,200,0,ffff800035dc7b00) at doopenat+0x26e sys/kern/vfs_syscalls.c:1126
syscall(ffff800035dc7bc0) at syscall+0x5ef sys/arch/amd64/amd64/trap.c:591
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xe4058dbf590, count: 246
End of stack trace.
syncing disks...panic: ffs_update: bad link cnt
Starting stack trace...
panic(ffffffff828fc0bb) at panic+0x159 sys/kern/subr_prf.c:229
ffs_update(fffffd807332b790,0) at ffs_update+0x313 sys/ufs/ffs/ffs_inode.c:101
VOP_FSYNC(fffffd80675d8cf0,fffffd807f7d7820,2,ffff80002a6dd550) at VOP_FSYNC+0xc9 sys/kern/vfs_vops.c:311
ffs_sync_vnode(fffffd80675d8cf0,ffff800035dc7090) at ffs_sync_vnode+0x184 sys/ufs/ffs/ffs_vfsops.c:1187
vfs_mount_foreach_vnode(ffff8000006d2800,ffffffff82254850,ffff800035dc7090) at vfs_mount_foreach_vnode+0x55 sys/kern/vfs_subr.c:910
ffs_sync(ffff8000006d2800,2,0,fffffd807f7d7820,ffff80002a6dd550) at ffs_sync+0x11f sys/ufs/ffs/ffs_vfsops.c:1238
sys_sync(ffff80002a6dd550,0,0) at sys_sync+0xbc sys/kern/vfs_syscalls.c:536
vfs_syncwait(ffff80002a6dd550,1) at vfs_syncwait+0x3a
vfs_shutdown(ffff80002a6dd550) 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(ffffffff82920051) at panic+0x179 sys/kern/subr_prf.c:231
ufsdirhash_lookup(fffffd80648f81f0,ffffffff828fef05,2,fffffd80648f829c,ffff800035dc7458,0) at ufsdirhash_lookup+0x8b8 sys/ufs/ufs/ufs_dirhash.c:342
ufs_lookup() at ufs_lookup+0xbb6 sys/ufs/ufs/ufs_lookup.c:214
VOP_LOOKUP(fffffd806901c298,ffff800035dc75f8,ffff800035dc7598) at VOP_LOOKUP+0x5c sys/kern/vfs_vops.c:85
unveil_find_cover(fffffd806901c298,ffff80002a6dd550) at unveil_find_cover+0x130 sys/kern/kern_unveil.c:277
unveil_start_relative(ffff80002a6dd550,ffff800035dc7938,fffffd806901c298) at unveil_start_relative+0xf6 sys/kern/kern_unveil.c:606
namei(ffff800035dc7938) at namei+0x453 sys/kern/vfs_lookup.c:237
vn_open(ffff800035dc7938,201,0) at vn_open+0x17b sys/kern/vfs_vnops.c:107
doopenat(ffff80002a6dd550,4,200003c0,200,0,ffff800035dc7b00) at doopenat+0x26e sys/kern/vfs_syscalls.c:1126
syscall(ffff800035dc7bc0) at syscall+0x5ef sys/arch/amd64/amd64/trap.c:591
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xe4058dbf590, 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 860ebdd0-427f-2be6-5726-fd56b385017a
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 0x000f28a0: 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