<div dir="ltr"><div><div><div><div>Hi All,<br><br></div>To read/write data to user-space from kernel-space we use copy_from_user() and copy_to_user() functions. <br><br></div>What is the use of these function? <br>Why kernel can't directly access user address and read/write on to it?<br>
</div><div>Can any one explain why kernel can't directly access the user-space address. <br><br></div><div></div>Thanks<br><br></div></div>