panic: trap type 8, code=0, pc=ffffffff8227a7df
Starting stack trace...
panic(ffffffff8259bc11) at panic+0x16b sys/kern/subr_prf.c:229
kerntrap(ffff80002ff68280) at kerntrap+0x1c7 sys/arch/amd64/amd64/trap.c:313
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
rc4_keysetup(ffff80002ff6b0c2,ffff80002ff6b1d4,0) at rc4_keysetup+0xaf sys/crypto/arc4.c:41
pipex_mpp
e_init(ffff80002ff6b088,34de,628e,ffff800000e3ae80,0) at pipex_mppe_init+0x212 sys/net/pipex.c:2319
pipex_init_session(ffff80002ff68508,ffff800000e3ac00) at pipex_init_session+0x637 pipex_session_init_mppe_send sys/net/pipex.c:2336 [inline]
pipex_init_session(ffff80002ff68508,ffff800000e3ac00) at pipex_init_session+0x637 sys/net/pipex.c:390
pppacioctl(4086337,82907003,ffff800000e3ac00,1,ffff80002e4647e8) at pppacioctl+0x156 pppac_add_session sys/net/if_pppx.c:1315 [inline]
pppacioctl(4086337,82907003,ffff800000e3ac00,1,ffff80002e4647e8) at pppacioctl+0x156 sys/net/if_pppx.c:1165
VOP_IOCTL(fffffd8067ba57b8,82907003,ffff800000e3ac00,1,fffffd807f7d70d0,ffff80002e4647e8) at VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264
vn_ioctl(fffffd805d5c5308,82907003,ffff800000e3ac00,ffff80002e4647e8) at vn_ioctl+0xbc sys/kern/vfs_vnops.c:525
sys_ioctl(ffff80002e4647e8,ffff80002ff68858,ffff80002ff688a0) at sys_ioctl+0x4a2
syscall(ffff80002ff68920) at syscall+0x4c3 mi_syscall sys/sys/syscall_mi.h:101 [inline]
syscall(ffff80002ff68920) at syscall+0x4c3 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xd302b19de90, count: 245
End of stack trace.
syncing disks...panic: ffs_update: bad link cnt
Starting stack trace...
panic(ffffffff8263df7e) at panic+0x16b sys/kern/subr_prf.c:229
ffs_update(fffffd806edd3cd0,0) at ffs_update+0x303 sys/ufs/ffs/ffs_inode.c:101
VOP_FSYNC(fffffd8073de7de0,fffffd807f7d70d0,2,ffff80002e4647e8) at VOP_FSYNC+0xce sys/kern/vfs_vops.c:311
ffs_sync_vnode(fffffd8073de7de0,ffff80002ff67f90) at ffs_sync_vnode+0x180 sys/ufs/ffs/ffs_vfsops.c:1197
vfs_mount_foreach_vnode(ffff8000006d7c00,ffffffff81cd9c10,ffff80002ff67f90) at vfs_mount_foreach_vnode+0x55 sys/kern/vfs_subr.c:910
ffs_sync(ffff8000006d7c00,2,0,fffffd807f7d70d0,ffff80002e4647e8) at ffs_sync+0x11f sys/ufs/ffs/ffs_vfsops.c:1248
sys_sync(ffff80002e4647e8,0,0) at sys_sync+0xbc sys/kern/vfs_syscalls.c:537
vfs_syncwait(ffff80002e4647e8,1) at vfs_syncwait+0x36
vfs_shutdown(ffff80002e4647e8) at vfs_shutdown+0x5d sys/kern/vfs_subr.c:1791
boot(100) at boot+0xc8 sys/arch/amd64/amd64/machdep.c:830
ttm_tt_create(100,100) at ttm_tt_create
panic(ffffffff8259bc11) at panic+0x18b sys/kern/subr_prf.c:231
kerntrap(ffff80002ff68280) at kerntrap+0x1c7 sys/arch/amd64/amd64/trap.c:313
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
rc4_keysetup(ffff80002ff6b0c2,ffff80002ff6b1d4,0) at rc4_keysetup+0xaf sys/crypto/arc4.c:41
pipex_mppe_init(ffff80002ff6b088,34de,628e,ffff800000e3ae80,0) at pipex_mppe_init+0x212 sys/net/pipex.c:2319
pipex_init_session(ffff80002ff68508,ffff800000e3ac00) at pipex_init_session+0x637 pipex_session_init_mppe_send sys/net/pipex.c:2336 [inline]
pipex_init_session(ffff80002ff68508,ffff800000e3ac00) at pipex_init_session+0x637 sys/net/pipex.c:390
pppacioctl(4086337,82907003,ffff800000e3ac00,1,ffff80002e4647e8) at pppacioctl+0x156 pppac_add_session sys/net/if_pppx.c:1315 [inline]
pppacioctl(4086337,82907003,ffff800000e3ac00,1,ffff80002e4647e8) at pppacioctl+0x156 sys/net/if_pppx.c:1165
VOP_IOCTL(fffffd8067ba57b8,82907003,ffff800000e3ac00,1,fffffd807f7d70d0,ffff80002e4647e8) at VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264
vn_ioctl(fffffd805d5c5308,82907003,ffff800000e3ac00,ffff80002e4647e8) at vn_ioctl+0xbc sys/kern/vfs_vnops.c:525
sys_ioctl(ffff80002e4647e8,ffff80002ff68858,ffff80002ff688a0) at sys_ioctl+0x4a2
syscall(ffff80002ff68920) at syscall+0x4c3 mi_syscall sys/sys/syscall_mi.h:101 [inline]
syscall(ffff80002ff68920) at syscall+0x4c3 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xd302b19de90, count: 234
End of stack trace.

dump to dev 4,1 not possible
rpeabnoioct:in kge..r.n
el diagnostiSeaBIOS (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 fe2172e1-0ae4-3e3c-d45b-fa0270c0bf41
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 0x000f24c0: 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 3.54
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