bug.c

来自「linux 内核源代码」· C语言 代码 · 共 21 行

/*
 * Copyright (C) 2006 Jeff Dike ([e-mail])
 * Licensed under the GPL V2
 */

#include <linux/uaccess.h>

/* Mostly copied from i386/x86_86 - eliminated the eip < PAGE_OFFSET because
 * that's not relevant in skas mode.
 */

int is_valid_bugaddr(unsigned long eip)
{
	unsigned short ud2;

	if (probe_kernel_address((unsigned short __user *)eip, ud2))
		return 0;

	return ud2 == 0x0b0f;
}