函数逻辑报告

函数名称：If we're handed a bigger struct than we know of, ensure all the unknown bits* are 0 - i.e. new user-space does not rely on any kernel feature extensions* we don't know about yet.* There is a ToCToU between this function call and the following

函数原型：int bpf_check_uarg_tail_zero(void __user *uaddr, size_t expected_size, size_t actual_size)

返回类型：int

参数：