| Jeff Dike | e182c96 | 2006-12-08 02:36:23 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2006 Jeff Dike (jdike@addtoit.com) |
| 3 | * Licensed under the GPL V2 |
| 4 | */ |
| 5 | |
| 6 | #include <linux/uaccess.h> |
| Jeff Dike | 8192ab4 | 2008-02-04 22:30:53 -0800 | [diff] [blame] | 7 | #include <asm/errno.h> |
| Jeff Dike | e182c96 | 2006-12-08 02:36:23 -0800 | [diff] [blame] | 8 | |
| 9 | /* Mostly copied from i386/x86_86 - eliminated the eip < PAGE_OFFSET because |
| Simon Arlott | b60745b | 2007-10-20 01:23:03 +0200 | [diff] [blame] | 10 | * that's not relevant in skas mode. |
| Jeff Dike | e182c96 | 2006-12-08 02:36:23 -0800 | [diff] [blame] | 11 | */ |
| 12 | |
| 13 | int 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 | } |