Hi Xu, Murphy, ... > > + {&fd_dup, 0, EINVAL, 0, CONTSIZE/2, "overlaping"}, > overlaping range > > + {&fd_blkdev, 0, EINVAL, 0, CONTSIZE, "block device"}, > > + {&fd_chrdev, 0, EINVAL, 0, CONTSIZE, "charr device"}, > char device Thanks for your review. Fixed and merged with your ack. Kind regards, Petr