cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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poison.h (2563B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2#ifndef _LINUX_POISON_H
      3#define _LINUX_POISON_H
      4
      5/********** include/linux/list.h **********/
      6
      7/*
      8 * Architectures might want to move the poison pointer offset
      9 * into some well-recognized area such as 0xdead000000000000,
     10 * that is also not mappable by user-space exploits:
     11 */
     12#ifdef CONFIG_ILLEGAL_POINTER_VALUE
     13# define POISON_POINTER_DELTA _AC(CONFIG_ILLEGAL_POINTER_VALUE, UL)
     14#else
     15# define POISON_POINTER_DELTA 0
     16#endif
     17
     18#ifdef __cplusplus
     19#define LIST_POISON1  NULL
     20#define LIST_POISON2  NULL
     21#else
     22/*
     23 * These are non-NULL pointers that will result in page faults
     24 * under normal circumstances, used to verify that nobody uses
     25 * non-initialized list entries.
     26 */
     27#define LIST_POISON1  ((void *) 0x100 + POISON_POINTER_DELTA)
     28#define LIST_POISON2  ((void *) 0x200 + POISON_POINTER_DELTA)
     29#endif
     30
     31/********** include/linux/timer.h **********/
     32/*
     33 * Magic number "tsta" to indicate a static timer initializer
     34 * for the object debugging code.
     35 */
     36#define TIMER_ENTRY_STATIC	((void *) 0x300 + POISON_POINTER_DELTA)
     37
     38/********** mm/page_poison.c **********/
     39#define PAGE_POISON 0xaa
     40
     41/********** mm/page_alloc.c ************/
     42
     43#define TAIL_MAPPING	((void *) 0x400 + POISON_POINTER_DELTA)
     44
     45/********** mm/slab.c **********/
     46/*
     47 * Magic nums for obj red zoning.
     48 * Placed in the first word before and the first word after an obj.
     49 */
     50#define	RED_INACTIVE	0x09F911029D74E35BULL	/* when obj is inactive */
     51#define	RED_ACTIVE	0xD84156C5635688C0ULL	/* when obj is active */
     52
     53#define SLUB_RED_INACTIVE	0xbb
     54#define SLUB_RED_ACTIVE		0xcc
     55
     56/* ...and for poisoning */
     57#define	POISON_INUSE	0x5a	/* for use-uninitialised poisoning */
     58#define POISON_FREE	0x6b	/* for use-after-free poisoning */
     59#define	POISON_END	0xa5	/* end-byte of poisoning */
     60
     61/********** arch/$ARCH/mm/init.c **********/
     62#define POISON_FREE_INITMEM	0xcc
     63
     64/********** arch/ia64/hp/common/sba_iommu.c **********/
     65/*
     66 * arch/ia64/hp/common/sba_iommu.c uses a 16-byte poison string with a
     67 * value of "SBAIOMMU POISON\0" for spill-over poisoning.
     68 */
     69
     70/********** fs/jbd/journal.c **********/
     71#define JBD_POISON_FREE		0x5b
     72#define JBD2_POISON_FREE	0x5c
     73
     74/********** drivers/base/dmapool.c **********/
     75#define	POOL_POISON_FREED	0xa7	/* !inuse */
     76#define	POOL_POISON_ALLOCATED	0xa9	/* !initted */
     77
     78/********** drivers/atm/ **********/
     79#define ATM_POISON_FREE		0x12
     80#define ATM_POISON		0xdeadbeef
     81
     82/********** kernel/mutexes **********/
     83#define MUTEX_DEBUG_INIT	0x11
     84#define MUTEX_DEBUG_FREE	0x22
     85
     86/********** security/ **********/
     87#define KEY_DESTROY		0xbd
     88
     89#endif