Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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#ifdef CONFIG_PHYS_ADDR_T_64BIT
44#define MEMBLOCK_INACTIVE 0x3a84fb0144c9e71bULL
45#else
46#define MEMBLOCK_INACTIVE 0x44c9e71bUL
47#endif
48
49#define SLUB_RED_INACTIVE 0xbb
50#define SLUB_RED_ACTIVE 0xcc
51
52/* ...and for poisoning */
53#define POISON_INUSE 0x5a /* for use-uninitialised poisoning */
54#define POISON_FREE 0x6b /* for use-after-free poisoning */
55#define POISON_END 0xa5 /* end-byte of poisoning */
56
57/********** arch/$ARCH/mm/init.c **********/
58#define POISON_FREE_INITMEM 0xcc
59
60/********** arch/ia64/hp/common/sba_iommu.c **********/
61/*
62 * arch/ia64/hp/common/sba_iommu.c uses a 16-byte poison string with a
63 * value of "SBAIOMMU POISON\0" for spill-over poisoning.
64 */
65
66/********** fs/jbd/journal.c **********/
67#define JBD_POISON_FREE 0x5b
68#define JBD2_POISON_FREE 0x5c
69
70/********** drivers/base/dmapool.c **********/
71#define POOL_POISON_FREED 0xa7 /* !inuse */
72#define POOL_POISON_ALLOCATED 0xa9 /* !initted */
73
74/********** drivers/atm/ **********/
75#define ATM_POISON_FREE 0x12
76#define ATM_POISON 0xdeadbeef
77
78/********** net/ **********/
79#define NEIGHBOR_DEAD 0xdeadbeef
80#define NETFILTER_LINK_POISON 0xdead57ac
81
82/********** kernel/mutexes **********/
83#define MUTEX_DEBUG_INIT 0x11
84#define MUTEX_DEBUG_FREE 0x22
85
86/********** lib/flex_array.c **********/
87#define FLEX_ARRAY_FREE 0x6c /* for use-after-free poisoning */
88
89/********** security/ **********/
90#define KEY_DESTROY 0xbd
91
92/********** sound/oss/ **********/
93#define OSS_POISON_FREE 0xAB
94
95#endif