This file contain idea and things I don't want to forget Possible bug in fs/read_write.c Function sys_readdir() There is a call the verify_area that does not take in account the count parameter. I guess it should read error = verify_area(VERIFY_WRITE, dirent, count*sizeof (*dirent)); instead of error = verify_area(VERIFY_WRITE, dirent, sizeof (*dirent)); Of course, now , count is always 1