drivers/misc/lkdtm/lkdtm.h

   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 extern char *lkdtm_kernel_info;
  10
  11 #define pr_expected_config(kconfig)                             \
  12 {                                                               \
  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 }
  20
  21 #ifndef MODULE
  22 int lkdtm_check_bool_cmdline(const char *param);
  23 #define pr_expected_config_param(kconfig, param)                \
  24 {                                                               \
  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 }
  56 #else
  57 #define pr_expected_config_param(kconfig, param) pr_expected_config(kconfig)
  58 #endif
  59
  60 /* bugs.c */
  61 void __init lkdtm_bugs_init(int *recur_param);
  62 void lkdtm_PANIC(void);
  63 void lkdtm_BUG(void);
  64 void lkdtm_WARNING(void);
  65 void lkdtm_WARNING_MESSAGE(void);
  66 void lkdtm_EXCEPTION(void);
  67 void lkdtm_LOOP(void);
  68 void lkdtm_EXHAUST_STACK(void);
  69 void lkdtm_CORRUPT_STACK(void);
  70 void lkdtm_CORRUPT_STACK_STRONG(void);
  71 void lkdtm_REPORT_STACK(void);
  72 void lkdtm_UNALIGNED_LOAD_STORE_WRITE(void);
  73 void lkdtm_SOFTLOCKUP(void);
  74 void lkdtm_HARDLOCKUP(void);
  75 void lkdtm_SPINLOCKUP(void);
  76 void lkdtm_HUNG_TASK(void);
  77 void lkdtm_OVERFLOW_SIGNED(void);
  78 void lkdtm_OVERFLOW_UNSIGNED(void);
  79 void lkdtm_ARRAY_BOUNDS(void);
  80 void lkdtm_CORRUPT_LIST_ADD(void);
  81 void lkdtm_CORRUPT_LIST_DEL(void);
  82 void lkdtm_STACK_GUARD_PAGE_LEADING(void);
  83 void lkdtm_STACK_GUARD_PAGE_TRAILING(void);
  84 void lkdtm_UNSET_SMEP(void);
  85 void lkdtm_DOUBLE_FAULT(void);
  86 void lkdtm_CORRUPT_PAC(void);
  87
  88 /* heap.c */
  89 void __init lkdtm_heap_init(void);
  90 void __exit lkdtm_heap_exit(void);
  91 void lkdtm_VMALLOC_LINEAR_OVERFLOW(void);
  92 void lkdtm_SLAB_LINEAR_OVERFLOW(void);
  93 void lkdtm_WRITE_AFTER_FREE(void);
  94 void lkdtm_READ_AFTER_FREE(void);
  95 void lkdtm_WRITE_BUDDY_AFTER_FREE(void);
  96 void lkdtm_READ_BUDDY_AFTER_FREE(void);
  97 void lkdtm_SLAB_INIT_ON_ALLOC(void);
  98 void lkdtm_BUDDY_INIT_ON_ALLOC(void);
  99 void lkdtm_SLAB_FREE_DOUBLE(void);
 100 void lkdtm_SLAB_FREE_CROSS(void);
 101 void lkdtm_SLAB_FREE_PAGE(void);
 102
 103 /* perms.c */
 104 void __init lkdtm_perms_init(void);
 105 void lkdtm_WRITE_RO(void);
 106 void lkdtm_WRITE_RO_AFTER_INIT(void);
 107 void lkdtm_WRITE_KERN(void);
 108 void lkdtm_EXEC_DATA(void);
 109 void lkdtm_EXEC_STACK(void);
 110 void lkdtm_EXEC_KMALLOC(void);
 111 void lkdtm_EXEC_VMALLOC(void);
 112 void lkdtm_EXEC_RODATA(void);
 113 void lkdtm_EXEC_USERSPACE(void);
 114 void lkdtm_EXEC_NULL(void);
 115 void lkdtm_ACCESS_USERSPACE(void);
 116 void lkdtm_ACCESS_NULL(void);
 117
 118 /* refcount.c */
 119 void lkdtm_REFCOUNT_INC_OVERFLOW(void);
 120 void lkdtm_REFCOUNT_ADD_OVERFLOW(void);
 121 void lkdtm_REFCOUNT_INC_NOT_ZERO_OVERFLOW(void);
 122 void lkdtm_REFCOUNT_ADD_NOT_ZERO_OVERFLOW(void);
 123 void lkdtm_REFCOUNT_DEC_ZERO(void);
 124 void lkdtm_REFCOUNT_DEC_NEGATIVE(void);
 125 void lkdtm_REFCOUNT_DEC_AND_TEST_NEGATIVE(void);
 126 void lkdtm_REFCOUNT_SUB_AND_TEST_NEGATIVE(void);
 127 void lkdtm_REFCOUNT_INC_ZERO(void);
 128 void lkdtm_REFCOUNT_ADD_ZERO(void);
 129 void lkdtm_REFCOUNT_INC_SATURATED(void);
 130 void lkdtm_REFCOUNT_DEC_SATURATED(void);
 131 void lkdtm_REFCOUNT_ADD_SATURATED(void);
 132 void lkdtm_REFCOUNT_INC_NOT_ZERO_SATURATED(void);
 133 void lkdtm_REFCOUNT_ADD_NOT_ZERO_SATURATED(void);
 134 void lkdtm_REFCOUNT_DEC_AND_TEST_SATURATED(void);
 135 void lkdtm_REFCOUNT_SUB_AND_TEST_SATURATED(void);
 136 void lkdtm_REFCOUNT_TIMING(void);
 137 void lkdtm_ATOMIC_TIMING(void);
 138
 139 /* rodata.c */
 140 void lkdtm_rodata_do_nothing(void);
 141
 142 /* usercopy.c */
 143 void __init lkdtm_usercopy_init(void);
 144 void __exit lkdtm_usercopy_exit(void);
 145 void lkdtm_USERCOPY_HEAP_SIZE_TO(void);
 146 void lkdtm_USERCOPY_HEAP_SIZE_FROM(void);
 147 void lkdtm_USERCOPY_HEAP_WHITELIST_TO(void);
 148 void lkdtm_USERCOPY_HEAP_WHITELIST_FROM(void);
 149 void lkdtm_USERCOPY_STACK_FRAME_TO(void);
 150 void lkdtm_USERCOPY_STACK_FRAME_FROM(void);
 151 void lkdtm_USERCOPY_STACK_BEYOND(void);
 152 void lkdtm_USERCOPY_KERNEL(void);
 153
 154 /* stackleak.c */
 155 void lkdtm_STACKLEAK_ERASING(void);
 156
 157 /* cfi.c */
 158 void lkdtm_CFI_FORWARD_PROTO(void);
 159
 160 /* fortify.c */
 161 void lkdtm_FORTIFIED_OBJECT(void);
 162 void lkdtm_FORTIFIED_SUBOBJECT(void);
 163 void lkdtm_FORTIFIED_STRSCPY(void);
 164
 165 /* powerpc.c */
 166 void lkdtm_PPC_SLB_MULTIHIT(void);
 167
 168 #endif