projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| c9cf5528 RD |
1 | #ifndef _LINUX_POISON_H |
| 2 | #define _LINUX_POISON_H | |
| 3 | ||
| 4 | /********** include/linux/list.h **********/ | |
| a29815a3 AK |
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 | ||
| c9cf5528 RD |
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 | */ | |
| 8a5e5e02 VK |
22 | #define LIST_POISON1 ((void *) 0x100 + POISON_POINTER_DELTA) |
| 23 | #define LIST_POISON2 ((void *) 0x200 + POISON_POINTER_DELTA) | |
| c9cf5528 | 24 | |
| c6f3a97f TG |
25 | /********** include/linux/timer.h **********/ |
| 26 | /* | |
| 27 | * Magic number "tsta" to indicate a static timer initializer | |
| 28 | * for the object debugging code. | |
| 29 | */ | |
| b8a0255d | 30 | #define TIMER_ENTRY_STATIC ((void *) 0x300 + POISON_POINTER_DELTA) |
| c6f3a97f | 31 | |
| 6a11f75b | 32 | /********** mm/debug-pagealloc.c **********/ |
| 1414c7f4 LA |
33 | #ifdef CONFIG_PAGE_POISONING_ZERO |
| 34 | #define PAGE_POISON 0x00 | |
| 35 | #else | |
| 6a11f75b | 36 | #define PAGE_POISON 0xaa |
| 1414c7f4 | 37 | #endif |
| 6a11f75b | 38 | |
| 1c290f64 KS |
39 | /********** mm/page_alloc.c ************/ |
| 40 | ||
| b8a0255d | 41 | #define TAIL_MAPPING ((void *) 0x400 + POISON_POINTER_DELTA) |
| 1c290f64 | 42 | |
| c9cf5528 RD |
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 | */ | |
| b46b8f19 DW |
48 | #define RED_INACTIVE 0x09F911029D74E35BULL /* when obj is inactive */ |
| 49 | #define RED_ACTIVE 0xD84156C5635688C0ULL /* when obj is active */ | |
| c9cf5528 | 50 | |
| 81819f0f CL |
51 | #define SLUB_RED_INACTIVE 0xbb |
| 52 | #define SLUB_RED_ACTIVE 0xcc | |
| 53 | ||
| c9cf5528 RD |
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 | ||
| c9cf5528 RD |
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 **********/ | |
| cd02ff0b MC |
69 | #define JBD_POISON_FREE 0x5b |
| 70 | #define JBD2_POISON_FREE 0x5c | |
| c9cf5528 RD |
71 | |
| 72 | /********** drivers/base/dmapool.c **********/ | |
| 73 | #define POOL_POISON_FREED 0xa7 /* !inuse */ | |
| 74 | #define POOL_POISON_ALLOCATED 0xa9 /* !initted */ | |
| 75 | ||
| b3c681e0 RD |
76 | /********** drivers/atm/ **********/ |
| 77 | #define ATM_POISON_FREE 0x12 | |
| 3c6b3773 | 78 | #define ATM_POISON 0xdeadbeef |
| b3c681e0 | 79 | |
| a7807a32 RD |
80 | /********** kernel/mutexes **********/ |
| 81 | #define MUTEX_DEBUG_INIT 0x11 | |
| 82 | #define MUTEX_DEBUG_FREE 0x22 | |
| 83 | ||
| 19da3dd1 DR |
84 | /********** lib/flex_array.c **********/ |
| 85 | #define FLEX_ARRAY_FREE 0x6c /* for use-after-free poisoning */ | |
| 86 | ||
| a7807a32 RD |
87 | /********** security/ **********/ |
| 88 | #define KEY_DESTROY 0xbd | |
| 89 | ||
| c9cf5528 | 90 | #endif |