Attacking using a buffer overflow can change this process and allow an attacker to execute any function they wish.
利用缓冲区溢出进行攻击可以改变这个过程，并且允许黑客执行任何他们期望的函数。
This makes it much harder to manipulate the return address, but it doesn't defend against buffer overflow attacks that change the data of calling functions.
这样使得操纵返回地址困难多了，但它不会阻止改变调用函数的数据的缓冲区溢出攻击。
A new jiffy counter called jiffies_64 has been introduced to avoid the rapid overflow of the jiffy variable because of the HZ value change.
引入了一个叫做jiffies_64的瞬间计算器，以避免由于hz值的变化而引起瞬间变量的迅速溢出。
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