#ifndef _LINUX_POISON_H#define _LINUX_POISON_H /********** include/linux/list.h **********/ /* * Architectures might want to move the poison pointer offset * into some well-recognized area such as 0xdead000000000000, * that is also not mappable by user-space exploits: */#ifdef CONFIG_ILLEGAL_POINTER_VALUE# define POISON_POINTER_DELTA _AC(CONFIG_ILLEGAL_POINTER_VALUE, UL)#else# define POISON_POINTER_DELTA 0#endif /* * These are non-NULL pointers that will result in page faults * under normal circumstances, used to verify that nobody uses * non-initialized list entries. */#define LIST_POISON1  ((void *) 0x100 + POISON_POINTER_DELTA)#define LIST_POISON2  ((void *) 0x200 + POISON_POINTER_DELTA) /********** include/linux/timer.h **********//* * Magic number "tsta" to indicate a static timer initializer * for the object debugging code. */#define TIMER_ENTRY_STATIC	((void *) 0x300 + POISON_POINTER_DELTA) /********** mm/debug-pagealloc.c **********/#ifdef CONFIG_PAGE_POISONING_ZERO#define PAGE_POISON 0x00#else#define PAGE_POISON 0xaa#endif /********** mm/page_alloc.c ************/ #define TAIL_MAPPING	((void *) 0x400 + POISON_POINTER_DELTA) /********** mm/slab.c **********//* * Magic nums for obj red zoning. * Placed in the first word before and the first word after an obj. */#define	RED_INACTIVE	0x09F911029D74E35BULL	/* when obj is inactive */#define	RED_ACTIVE	0xD84156C5635688C0ULL	/* when obj is active */ #define SLUB_RED_INACTIVE	0xbb#define SLUB_RED_ACTIVE		0xcc /* ...and for poisoning */#define	POISON_INUSE	0x5a	/* for use-uninitialised poisoning */#define POISON_FREE	0x6b	/* for use-after-free poisoning */#define	POISON_END	0xa5	/* end-byte of poisoning */ /********** arch/$ARCH/mm/init.c **********/#define POISON_FREE_INITMEM	0xcc /********** arch/ia64/hp/common/sba_iommu.c **********//* * arch/ia64/hp/common/sba_iommu.c uses a 16-byte poison string with a * value of "SBAIOMMU POISON\0" for spill-over poisoning. */ /********** fs/jbd/journal.c **********/#define JBD_POISON_FREE		0x5b#define JBD2_POISON_FREE	0x5c /********** drivers/base/dmapool.c **********/#define	POOL_POISON_FREED	0xa7	/* !inuse */#define	POOL_POISON_ALLOCATED	0xa9	/* !initted */ /********** drivers/atm/ **********/#define ATM_POISON_FREE		0x12#define ATM_POISON		0xdeadbeef /********** kernel/mutexes **********/#define MUTEX_DEBUG_INIT	0x11#define MUTEX_DEBUG_FREE	0x22 /********** lib/flex_array.c **********/#define FLEX_ARRAY_FREE	0x6c	/* for use-after-free poisoning */ /********** security/ **********/#define KEY_DESTROY		0xbd #endif