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