LXR linux/arch/x86/um/bug.c

   1/*
   2 * Copyright (C) 2006 Jeff Dike (jdike@addtoit.com)
   3 * Licensed under the GPL V2
   4 */
   5
   6#include <linux/uaccess.h>
   7
   8/*
   9 * Mostly copied from i386/x86_86 - eliminated the eip < PAGE_OFFSET because
  10 * that's not relevant in skas mode.
  11 */
  12
  13int is_valid_bugaddr(unsigned long eip)
  14{
  15        unsigned short ud2;
  16
  17        if (probe_kernel_address((unsigned short __user *)eip, ud2))
  18                return 0;
  19
  20        return ud2 == 0x0b0f;
  21}
  22