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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 *) 0x00100100 + POISON_POINTER_DELTA) |
23 | #define LIST_POISON2 ((void *) 0x00200200 + 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 *) 0x74737461) |
31 | |
32 | /********** mm/debug-pagealloc.c **********/ |
33 | #define PAGE_POISON 0xaa |
34 | |
35 | /********** mm/slab.c **********/ |
36 | /* |
37 | * Magic nums for obj red zoning. |
38 | * Placed in the first word before and the first word after an obj. |
39 | */ |
40 | #define RED_INACTIVE 0x09F911029D74E35BULL /* when obj is inactive */ |
41 | #define RED_ACTIVE 0xD84156C5635688C0ULL /* when obj is active */ |
42 | |
43 | #define SLUB_RED_INACTIVE 0xbb |
44 | #define SLUB_RED_ACTIVE 0xcc |
45 | |
46 | /* ...and for poisoning */ |
47 | #define POISON_INUSE 0x5a /* for use-uninitialised poisoning */ |
48 | #define POISON_FREE 0x6b /* for use-after-free poisoning */ |
49 | #define POISON_END 0xa5 /* end-byte of poisoning */ |
50 | |
51 | /********** arch/$ARCH/mm/init.c **********/ |
52 | #define POISON_FREE_INITMEM 0xcc |
53 | |
54 | /********** arch/ia64/hp/common/sba_iommu.c **********/ |
55 | /* |
56 | * arch/ia64/hp/common/sba_iommu.c uses a 16-byte poison string with a |
57 | * value of "SBAIOMMU POISON\0" for spill-over poisoning. |
58 | */ |
59 | |
60 | /********** fs/jbd/journal.c **********/ |
61 | #define JBD_POISON_FREE 0x5b |
62 | #define JBD2_POISON_FREE 0x5c |
63 | |
64 | /********** drivers/base/dmapool.c **********/ |
65 | #define POOL_POISON_FREED 0xa7 /* !inuse */ |
66 | #define POOL_POISON_ALLOCATED 0xa9 /* !initted */ |
67 | |
68 | /********** drivers/atm/ **********/ |
69 | #define ATM_POISON_FREE 0x12 |
70 | #define ATM_POISON 0xdeadbeef |
71 | |
72 | /********** net/ **********/ |
73 | #define NEIGHBOR_DEAD 0xdeadbeef |
74 | #define NETFILTER_LINK_POISON 0xdead57ac |
75 | |
76 | /********** kernel/mutexes **********/ |
77 | #define MUTEX_DEBUG_INIT 0x11 |
78 | #define MUTEX_DEBUG_FREE 0x22 |
79 | |
80 | /********** lib/flex_array.c **********/ |
81 | #define FLEX_ARRAY_FREE 0x6c /* for use-after-free poisoning */ |
82 | |
83 | /********** security/ **********/ |
84 | #define KEY_DESTROY 0xbd |
85 | |
86 | /********** sound/oss/ **********/ |
87 | #define OSS_POISON_FREE 0xAB |
88 | |
89 | #endif |
90 |
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