####panic: kernel diagnostic assertion "ps->ps_uvncount == 0" failed: file "/syzkaller/managers/main/kernel/sys/kern/kern_unveil.c", line 188
Starting stack trace...
panic(ffffffff828873be) at panic+0x159 sys/kern/subr_prf.c:229
__assert(ffffffff82909a4e,ffffffff828772a4,bc,ffffffff82899dcb) at __assert+0x29 sys/kern/subr_prf.c:157
unveil_destroy(ffff800032973ab8) at unveil_destroy+0x1a4 sys/kern/kern_unveil.c:188
exit1(ffff80002a68f298,0,0,1) at exit1+0x3b8 sys/kern/kern_exit.c:218
sys_exit(ffff80002a68f298,ffff800030d6ba90,ffff800030d6b9e0) at sys_exit+0x1a sys/kern/kern_exit.c:89
syscall(ffff800030d6ba90) at syscall+0x751 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7371603957c0, count: 250
End of stack trace.
syncing disks...21 11 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1  giving up

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 016acda6-80d9-6675-f1e2-930bbf0c87d3
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> machine ddbcpu 0
machine: syntax error
boot> trace
|/-\|/-\|/booting hd0a:trace: -\|/open hd0a:trace: No such file or directory
 failed(2). will try /bsd
boot> machine ddbcpu 1
machine: syntax error
boot> trace