module.c (9e87e48f8e5de2146842fd0ff436e0256b52c4a9) module.c (78cac48c0434c82e860fade3cd0420a7a4adbb08)
1/* Kernel module help for x86.
2 Copyright (C) 2001 Rusty Russell.
3
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
8

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28#include <linux/bug.h>
29#include <linux/mm.h>
30#include <linux/gfp.h>
31#include <linux/jump_label.h>
32#include <linux/random.h>
33
34#include <asm/page.h>
35#include <asm/pgtable.h>
1/* Kernel module help for x86.
2 Copyright (C) 2001 Rusty Russell.
3
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
8

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28#include <linux/bug.h>
29#include <linux/mm.h>
30#include <linux/gfp.h>
31#include <linux/jump_label.h>
32#include <linux/random.h>
33
34#include <asm/page.h>
35#include <asm/pgtable.h>
36#include <asm/setup.h>
36
37#if 0
38#define DEBUGP(fmt, ...) \
39 printk(KERN_DEBUG fmt, ##__VA_ARGS__)
40#else
41#define DEBUGP(fmt, ...) \
42do { \
43 if (0) \
44 printk(KERN_DEBUG fmt, ##__VA_ARGS__); \
45} while (0)
46#endif
47
48#ifdef CONFIG_RANDOMIZE_BASE
49static unsigned long module_load_offset;
37
38#if 0
39#define DEBUGP(fmt, ...) \
40 printk(KERN_DEBUG fmt, ##__VA_ARGS__)
41#else
42#define DEBUGP(fmt, ...) \
43do { \
44 if (0) \
45 printk(KERN_DEBUG fmt, ##__VA_ARGS__); \
46} while (0)
47#endif
48
49#ifdef CONFIG_RANDOMIZE_BASE
50static unsigned long module_load_offset;
50static int randomize_modules = 1;
51
52/* Mutex protects the module_load_offset. */
53static DEFINE_MUTEX(module_kaslr_mutex);
54
51
52/* Mutex protects the module_load_offset. */
53static DEFINE_MUTEX(module_kaslr_mutex);
54
55static int __init parse_nokaslr(char *p)
56{
57 randomize_modules = 0;
58 return 0;
59}
60early_param("nokaslr", parse_nokaslr);
61
62static unsigned long int get_module_load_offset(void)
63{
55static unsigned long int get_module_load_offset(void)
56{
64 if (randomize_modules) {
57 if (kaslr_enabled()) {
65 mutex_lock(&module_kaslr_mutex);
66 /*
67 * Calculate the module_load_offset the first time this
68 * code is called. Once calculated it stays the same until
69 * reboot.
70 */
71 if (module_load_offset == 0)
72 module_load_offset =

--- 191 unchanged lines hidden --- 		58 mutex_lock(&module_kaslr_mutex);
59 /*
60 * Calculate the module_load_offset the first time this
61 * code is called. Once calculated it stays the same until
62 * reboot.
63 */
64 if (module_load_offset == 0)
65 module_load_offset =

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