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1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef __LKDTM_H
3#define __LKDTM_H
4
5#define pr_fmt(fmt) "lkdtm: " fmt
6
7#include <linux/kernel.h>
8
9extern char *lkdtm_kernel_info;
10
11#define pr_expected_config(kconfig) \
12do { \
13 if (IS_ENABLED(kconfig)) \
14 pr_err("Unexpected! This %s was built with " #kconfig "=y\n", \
15 lkdtm_kernel_info); \
16 else \
17 pr_warn("This is probably expected, since this %s was built *without* " #kconfig "=y\n", \
18 lkdtm_kernel_info); \
19} while (0)
20
21#ifndef MODULE
22int lkdtm_check_bool_cmdline(const char *param);
23#define pr_expected_config_param(kconfig, param) \
24do { \
25 if (IS_ENABLED(kconfig)) { \
26 switch (lkdtm_check_bool_cmdline(param)) { \
27 case 0: \
28 pr_warn("This is probably expected, since this %s was built with " #kconfig "=y but booted with '" param "=N'\n", \
29 lkdtm_kernel_info); \
30 break; \
31 case 1: \
32 pr_err("Unexpected! This %s was built with " #kconfig "=y and booted with '" param "=Y'\n", \
33 lkdtm_kernel_info); \
34 break; \
35 default: \
36 pr_err("Unexpected! This %s was built with " #kconfig "=y (and booted without '" param "' specified)\n", \
37 lkdtm_kernel_info); \
38 } \
39 } else { \
40 switch (lkdtm_check_bool_cmdline(param)) { \
41 case 0: \
42 pr_warn("This is probably expected, as this %s was built *without* " #kconfig "=y and booted with '" param "=N'\n", \
43 lkdtm_kernel_info); \
44 break; \
45 case 1: \
46 pr_err("Unexpected! This %s was built *without* " #kconfig "=y but booted with '" param "=Y'\n", \
47 lkdtm_kernel_info); \
48 break; \
49 default: \
50 pr_err("This is probably expected, since this %s was built *without* " #kconfig "=y (and booted without '" param "' specified)\n", \
51 lkdtm_kernel_info); \
52 break; \
53 } \
54 } \
55} while (0)
56#else
57#define pr_expected_config_param(kconfig, param) pr_expected_config(kconfig)
58#endif
59
60/* Crash types. */
61struct crashtype {
62 const char *name;
63 void (*func)(void);
64};
65
66#define CRASHTYPE(_name) \
67 { \
68 .name = __stringify(_name), \
69 .func = lkdtm_ ## _name, \
70 }
71
72/* Category's collection of crashtypes. */
73struct crashtype_category {
74 struct crashtype *crashtypes;
75 size_t len;
76};
77
78/* Each category's crashtypes list. */
79extern struct crashtype_category bugs_crashtypes;
80extern struct crashtype_category heap_crashtypes;
81extern struct crashtype_category perms_crashtypes;
82extern struct crashtype_category refcount_crashtypes;
83extern struct crashtype_category usercopy_crashtypes;
84extern struct crashtype_category stackleak_crashtypes;
85extern struct crashtype_category cfi_crashtypes;
86extern struct crashtype_category fortify_crashtypes;
87extern struct crashtype_category powerpc_crashtypes;
88
89/* Each category's init/exit routines. */
90void __init lkdtm_bugs_init(int *recur_param);
91void __init lkdtm_heap_init(void);
92void __exit lkdtm_heap_exit(void);
93void __init lkdtm_perms_init(void);
94void __init lkdtm_usercopy_init(void);
95void __exit lkdtm_usercopy_exit(void);
96
97/* Special declaration for function-in-rodata. */
98void lkdtm_rodata_do_nothing(void);
99
100#endif
1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef __LKDTM_H
3#define __LKDTM_H
4
5#define pr_fmt(fmt) "lkdtm: " fmt
6
7#include <linux/kernel.h>
8
9/* lkdtm_bugs.c */
10void __init lkdtm_bugs_init(int *recur_param);
11void lkdtm_PANIC(void);
12void lkdtm_BUG(void);
13void lkdtm_WARNING(void);
14void lkdtm_WARNING_MESSAGE(void);
15void lkdtm_EXCEPTION(void);
16void lkdtm_LOOP(void);
17void lkdtm_EXHAUST_STACK(void);
18void lkdtm_CORRUPT_STACK(void);
19void lkdtm_CORRUPT_STACK_STRONG(void);
20void lkdtm_UNALIGNED_LOAD_STORE_WRITE(void);
21void lkdtm_SOFTLOCKUP(void);
22void lkdtm_HARDLOCKUP(void);
23void lkdtm_SPINLOCKUP(void);
24void lkdtm_HUNG_TASK(void);
25void lkdtm_CORRUPT_LIST_ADD(void);
26void lkdtm_CORRUPT_LIST_DEL(void);
27void lkdtm_CORRUPT_USER_DS(void);
28void lkdtm_STACK_GUARD_PAGE_LEADING(void);
29void lkdtm_STACK_GUARD_PAGE_TRAILING(void);
30void lkdtm_UNSET_SMEP(void);
31
32/* lkdtm_heap.c */
33void __init lkdtm_heap_init(void);
34void __exit lkdtm_heap_exit(void);
35void lkdtm_OVERWRITE_ALLOCATION(void);
36void lkdtm_WRITE_AFTER_FREE(void);
37void lkdtm_READ_AFTER_FREE(void);
38void lkdtm_WRITE_BUDDY_AFTER_FREE(void);
39void lkdtm_READ_BUDDY_AFTER_FREE(void);
40void lkdtm_SLAB_FREE_DOUBLE(void);
41void lkdtm_SLAB_FREE_CROSS(void);
42void lkdtm_SLAB_FREE_PAGE(void);
43
44/* lkdtm_perms.c */
45void __init lkdtm_perms_init(void);
46void lkdtm_WRITE_RO(void);
47void lkdtm_WRITE_RO_AFTER_INIT(void);
48void lkdtm_WRITE_KERN(void);
49void lkdtm_EXEC_DATA(void);
50void lkdtm_EXEC_STACK(void);
51void lkdtm_EXEC_KMALLOC(void);
52void lkdtm_EXEC_VMALLOC(void);
53void lkdtm_EXEC_RODATA(void);
54void lkdtm_EXEC_USERSPACE(void);
55void lkdtm_EXEC_NULL(void);
56void lkdtm_ACCESS_USERSPACE(void);
57void lkdtm_ACCESS_NULL(void);
58
59/* lkdtm_refcount.c */
60void lkdtm_REFCOUNT_INC_OVERFLOW(void);
61void lkdtm_REFCOUNT_ADD_OVERFLOW(void);
62void lkdtm_REFCOUNT_INC_NOT_ZERO_OVERFLOW(void);
63void lkdtm_REFCOUNT_ADD_NOT_ZERO_OVERFLOW(void);
64void lkdtm_REFCOUNT_DEC_ZERO(void);
65void lkdtm_REFCOUNT_DEC_NEGATIVE(void);
66void lkdtm_REFCOUNT_DEC_AND_TEST_NEGATIVE(void);
67void lkdtm_REFCOUNT_SUB_AND_TEST_NEGATIVE(void);
68void lkdtm_REFCOUNT_INC_ZERO(void);
69void lkdtm_REFCOUNT_ADD_ZERO(void);
70void lkdtm_REFCOUNT_INC_SATURATED(void);
71void lkdtm_REFCOUNT_DEC_SATURATED(void);
72void lkdtm_REFCOUNT_ADD_SATURATED(void);
73void lkdtm_REFCOUNT_INC_NOT_ZERO_SATURATED(void);
74void lkdtm_REFCOUNT_ADD_NOT_ZERO_SATURATED(void);
75void lkdtm_REFCOUNT_DEC_AND_TEST_SATURATED(void);
76void lkdtm_REFCOUNT_SUB_AND_TEST_SATURATED(void);
77void lkdtm_REFCOUNT_TIMING(void);
78void lkdtm_ATOMIC_TIMING(void);
79
80/* lkdtm_rodata.c */
81void lkdtm_rodata_do_nothing(void);
82
83/* lkdtm_usercopy.c */
84void __init lkdtm_usercopy_init(void);
85void __exit lkdtm_usercopy_exit(void);
86void lkdtm_USERCOPY_HEAP_SIZE_TO(void);
87void lkdtm_USERCOPY_HEAP_SIZE_FROM(void);
88void lkdtm_USERCOPY_HEAP_WHITELIST_TO(void);
89void lkdtm_USERCOPY_HEAP_WHITELIST_FROM(void);
90void lkdtm_USERCOPY_STACK_FRAME_TO(void);
91void lkdtm_USERCOPY_STACK_FRAME_FROM(void);
92void lkdtm_USERCOPY_STACK_BEYOND(void);
93void lkdtm_USERCOPY_KERNEL(void);
94void lkdtm_USERCOPY_KERNEL_DS(void);
95
96/* lkdtm_stackleak.c */
97void lkdtm_STACKLEAK_ERASING(void);
98
99/* cfi.c */
100void lkdtm_CFI_FORWARD_PROTO(void);
101
102#endif