diff options
Diffstat (limited to 'include/linux/poison.h')
| -rw-r--r-- | include/linux/poison.h | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/include/linux/poison.h b/include/linux/poison.h new file mode 100644 index 000000000..2110a81c5 --- /dev/null +++ b/include/linux/poison.h @@ -0,0 +1,89 @@ +#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 *) 0x00100100 + POISON_POINTER_DELTA) +#define LIST_POISON2 ((void *) 0x00200200 + 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 *) 0x74737461) + +/********** mm/debug-pagealloc.c **********/ +#define PAGE_POISON 0xaa + +/********** 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 + +/********** net/ **********/ +#define NEIGHBOR_DEAD 0xdeadbeef +#define NETFILTER_LINK_POISON 0xdead57ac + +/********** 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 + +/********** sound/oss/ **********/ +#define OSS_POISON_FREE 0xAB + +#endif |