panic: ufsdirhash_lookup: bad offset in hash array
Starting stack trace...
panic(ffffffff82981cd0) at panic+0x16f sys/kern/subr_prf.c:229
ufsdirhash_lookup(fffffd8066df2cd0,ffffffff8295abc7,2,fffffd8066df2d9c,ffff800030aa4fd8,0) 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(fffffd8071b2e538,ffff800030aa5178,ffff800030aa5118) at VOP_LOOKUP+0x5c sys/kern/vfs_vops.c:85
unveil_find_cover(fffffd8071b2e538,ffff80002a21f000) at unveil_find_cover+0x130 sys/kern/kern_unveil.c:277
unveil_start_relative(ffff80002a21f000,ffff800030aa54b8,fffffd8071b2e538) at unveil_start_relative+0xf6 sys/kern/kern_unveil.c:606
namei(ffff800030aa54b8) at namei+0x453 sys/kern/vfs_lookup.c:237
vn_open(ffff800030aa54b8,1,0) at vn_open+0xf8 sys/kern/vfs_vnops.c:140
doopenat(ffff80002a21f000,4,20000240,0,0,ffff800030aa5660) at doopenat+0x26e sys/kern/vfs_syscalls.c:1126
syscall(ffff800030aa5710) at syscall+0x533 mi_syscall sys/sys/syscall_mi.h:183 [inline]
syscall(ffff800030aa5710) at syscall+0x533 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x185c04a8bb0, count: 246
End of stack trace.
syncing disks...panic: ffs_update: bad link cnt
Starting stack trace...
panic(ffffffff8294e19c) at panic+0x16f sys/kern/subr_prf.c:229
ffs_update(fffffd806e8ae330,0) at ffs_update+0x2ea sys/ufs/ffs/ffs_inode.c:99
VOP_FSYNC(fffffd8068e87050,fffffd807f7d76e8,2,ffff80002a21f000) at VOP_FSYNC+0xcf sys/kern/vfs_vops.c:311
ffs_sync_vnode(fffffd8068e87050,ffff800030aa4c00) at ffs_sync_vnode+0x184 sys/ufs/ffs/ffs_vfsops.c:1081
vfs_mount_foreach_vnode(ffff8000006d2400,ffffffff827b6f70,ffff800030aa4c00) at vfs_mount_foreach_vnode+0x55 sys/kern/vfs_subr.c:910
ffs_sync(ffff8000006d2400,2,0,fffffd807f7d76e8,ffff80002a21f000) at ffs_sync+0x10b sys/ufs/ffs/ffs_vfsops.c:1132
sys_sync(ffff80002a21f000,0,0) at sys_sync+0xbc sys/kern/vfs_syscalls.c:536
vfs_syncwait(ffff80002a21f000,1) at vfs_syncwait+0x3a
vfs_shutdown(ffff80002a21f000) at vfs_shutdown+0x61 sys/kern/vfs_subr.c:1791
boot(100) at boot+0xc5 sys/arch/amd64/amd64/machdep.c:903
reboot(100) at reboot+0x81
panic(ffffffff82981cd0) at panic+0x18f sys/kern/subr_prf.c:231
ufsdirhash_lookup(fffffd8066df2cd0,ffffffff8295abc7,2,fffffd8066df2d9c,ffff800030aa4fd8,0) 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(fffffd8071b2e538,ffff800030aa5178,ffff800030aa5118) at VOP_LOOKUP+0x5c sys/kern/vfs_vops.c:85
unveil_find_cover(fffffd8071b2e538,ffff80002a21f000) at unveil_find_cover+0x130 sys/kern/kern_unveil.c:277
unveil_start_relative(ffff80002a21f000,ffff800030aa54b8,fffffd8071b2e538) at unveil_start_relative+0xf6 sys/kern/kern_unveil.c:606
namei(ffff800030aa54b8) at namei+0x453 sys/kern/vfs_lookup.c:237
vn_open(ffff800030aa54b8,1,0) at vn_open+0xf8 sys/kern/vfs_vnops.c:140
doopenat(ffff80002a21f000,4,20000240,0,0,ffff800030aa5660) at doopenat+0x26e sys/kern/vfs_syscalls.c:1126
syscall(ffff800030aa5710) at syscall+0x533 mi_syscall sys/sys/syscall_mi.h:183 [inline]
syscall(ffff800030aa5710) at syscall+0x533 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x185c04a8bb0, 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 f8e08a03-81bc-3227-53c0-939594373760
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 0x000f2860: 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 $lines = 0
set: syntax error
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