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(ffffffff827818c5) at panic+0x159 sys/kern/subr_prf.c:229
__assert(ffffffff827fb226,ffffffff82778bd1,bc,ffffffff8279955d) at __assert+0x29 sys/kern/subr_prf.c:157
unveil_destroy(ffff8000217087e0) at unveil_destroy+0x1a4 sys/kern/kern_unveil.c:188
exit1(ffff8000216d5570,0,0,1) at exit1+0x3b5 sys/kern/kern_exit.c:221
sys_exit(ffff8000216d5570,ffff80002e8d8110,ffff80002e8d8160) at sys_exit+0x1a sys/kern/kern_exit.c:89
syscall(ffff80002e8d81e0) at syscall+0x4a8 sys/arch/amd64/amd64/trap.c:623
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x6fca8cb3f7c0, count: 250
End of stack trace.
syncing disks...19 9  done

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 6a63e308-43db-2955-5bd8-f45d251cdfc1
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 0x000f2880: 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