prog: better validate arg data
prog: better validate arg data

xairy/syzkaller,dotweiba/syzkaller,dotweiba/syzkaller,google/syzkaller,zoulasc/syzkaller,hyz0906/syzkaller,xairy/syzkaller,google/syzkaller,google/syzkaller,zoulasc/syzkaller,zoulasc/syzkaller,hyz0906/syzkaller,google/syzkaller,xairy/syzkaller,xairy/syzkaller,hyz0906/syzkaller,dotweiba/syzkaller,hyz0906/syzkaller,xairy/syzkaller,hyz0906/syzkaller,google/syzkaller,zoulasc/syzkaller,google/syzkaller,dotweiba/syzkaller,xairy/syzkaller,google/syzkaller,xairy/syzkaller