diff options
| author | Jonathan Herman <hermanjl@cs.unc.edu> | 2013-01-22 10:38:37 -0500 |
|---|---|---|
| committer | Jonathan Herman <hermanjl@cs.unc.edu> | 2013-01-22 10:38:37 -0500 |
| commit | fcc9d2e5a6c89d22b8b773a64fb4ad21ac318446 (patch) | |
| tree | a57612d1888735a2ec7972891b68c1ac5ec8faea /arch/um/sys-i386/bug.c | |
| parent | 8dea78da5cee153b8af9c07a2745f6c55057fe12 (diff) | |
Diffstat (limited to 'arch/um/sys-i386/bug.c')
| -rw-r--r-- | arch/um/sys-i386/bug.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/arch/um/sys-i386/bug.c b/arch/um/sys-i386/bug.c new file mode 100644 index 00000000000..8d4f273f121 --- /dev/null +++ b/arch/um/sys-i386/bug.c | |||
| @@ -0,0 +1,21 @@ | |||
| 1 | /* | ||
| 2 | * Copyright (C) 2006 Jeff Dike (jdike@addtoit.com) | ||
| 3 | * Licensed under the GPL V2 | ||
| 4 | */ | ||
| 5 | |||
| 6 | #include <linux/uaccess.h> | ||
| 7 | #include <asm/errno.h> | ||
| 8 | |||
| 9 | /* Mostly copied from i386/x86_86 - eliminated the eip < PAGE_OFFSET because | ||
| 10 | * that's not relevant in skas mode. | ||
| 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 | } | ||
