Subversion Repositories Kolibri OS

Rev

Rev 6936 | Blame | Compare with Previous | Last modification | View Log | Download | RSS feed

  1. #ifndef _LINUX_POISON_H
  2. #define _LINUX_POISON_H
  3.  
  4. /********** include/linux/list.h **********/
  5.  
  6. /*
  7.  * Architectures might want to move the poison pointer offset
  8.  * into some well-recognized area such as 0xdead000000000000,
  9.  * that is also not mappable by user-space exploits:
  10.  */
  11. #ifdef CONFIG_ILLEGAL_POINTER_VALUE
  12. # define POISON_POINTER_DELTA _AC(CONFIG_ILLEGAL_POINTER_VALUE, UL)
  13. #else
  14. # define POISON_POINTER_DELTA 0
  15. #endif
  16.  
  17. /*
  18.  * These are non-NULL pointers that will result in page faults
  19.  * under normal circumstances, used to verify that nobody uses
  20.  * non-initialized list entries.
  21.  */
  22. #define LIST_POISON1  ((void *) 0x100 + POISON_POINTER_DELTA)
  23. #define LIST_POISON2  ((void *) 0x200 + POISON_POINTER_DELTA)
  24.  
  25. /********** include/linux/timer.h **********/
  26. /*
  27.  * Magic number "tsta" to indicate a static timer initializer
  28.  * for the object debugging code.
  29.  */
  30. #define TIMER_ENTRY_STATIC      ((void *) 0x300 + POISON_POINTER_DELTA)
  31.  
  32. /********** mm/debug-pagealloc.c **********/
  33. #ifdef CONFIG_PAGE_POISONING_ZERO
  34. #define PAGE_POISON 0x00
  35. #else
  36. #define PAGE_POISON 0xaa
  37. #endif
  38.  
  39. /********** mm/page_alloc.c ************/
  40.  
  41. #define TAIL_MAPPING    ((void *) 0x400 + POISON_POINTER_DELTA)
  42.  
  43. /********** mm/slab.c **********/
  44. /*
  45.  * Magic nums for obj red zoning.
  46.  * Placed in the first word before and the first word after an obj.
  47.  */
  48. #define RED_INACTIVE    0x09F911029D74E35BULL   /* when obj is inactive */
  49. #define RED_ACTIVE      0xD84156C5635688C0ULL   /* when obj is active */
  50.  
  51. #define SLUB_RED_INACTIVE       0xbb
  52. #define SLUB_RED_ACTIVE         0xcc
  53.  
  54. /* ...and for poisoning */
  55. #define POISON_INUSE    0x5a    /* for use-uninitialised poisoning */
  56. #define POISON_FREE     0x6b    /* for use-after-free poisoning */
  57. #define POISON_END      0xa5    /* end-byte of poisoning */
  58.  
  59. /********** arch/$ARCH/mm/init.c **********/
  60. #define POISON_FREE_INITMEM     0xcc
  61.  
  62. /********** arch/ia64/hp/common/sba_iommu.c **********/
  63. /*
  64.  * arch/ia64/hp/common/sba_iommu.c uses a 16-byte poison string with a
  65.  * value of "SBAIOMMU POISON\0" for spill-over poisoning.
  66.  */
  67.  
  68. /********** fs/jbd/journal.c **********/
  69. #define JBD_POISON_FREE         0x5b
  70. #define JBD2_POISON_FREE        0x5c
  71.  
  72. /********** drivers/base/dmapool.c **********/
  73. #define POOL_POISON_FREED       0xa7    /* !inuse */
  74. #define POOL_POISON_ALLOCATED   0xa9    /* !initted */
  75.  
  76. /********** drivers/atm/ **********/
  77. #define ATM_POISON_FREE         0x12
  78. #define ATM_POISON              0xdeadbeef
  79.  
  80. /********** kernel/mutexes **********/
  81. #define MUTEX_DEBUG_INIT        0x11
  82. #define MUTEX_DEBUG_FREE        0x22
  83.  
  84. /********** lib/flex_array.c **********/
  85. #define FLEX_ARRAY_FREE 0x6c    /* for use-after-free poisoning */
  86.  
  87. /********** security/ **********/
  88. #define KEY_DESTROY             0xbd
  89.  
  90. #endif
  91.