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