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 (2540B)

      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/*
     19 * These are non-NULL pointers that will result in page faults
     20 * under normal circumstances, used to verify that nobody uses
     21 * non-initialized list entries.
     22 */
     23#define LIST_POISON1  ((void *) 0x100 + POISON_POINTER_DELTA)
     24#define LIST_POISON2  ((void *) 0x122 + POISON_POINTER_DELTA)
     25
     26/********** include/linux/timer.h **********/
     27#define TIMER_ENTRY_STATIC	((void *) 0x300 + POISON_POINTER_DELTA)
     28
     29/********** mm/page_poison.c **********/
     30#define PAGE_POISON 0xaa
     31
     32/********** mm/page_alloc.c ************/
     33
     34#define TAIL_MAPPING	((void *) 0x400 + POISON_POINTER_DELTA)
     35
     36/********** mm/slab.c **********/
     37/*
     38 * Magic nums for obj red zoning.
     39 * Placed in the first word before and the first word after an obj.
     40 */
     41#define	RED_INACTIVE	0x09F911029D74E35BULL	/* when obj is inactive */
     42#define	RED_ACTIVE	0xD84156C5635688C0ULL	/* when obj is active */
     43
     44#define SLUB_RED_INACTIVE	0xbb
     45#define SLUB_RED_ACTIVE		0xcc
     46
     47/* ...and for poisoning */
     48#define	POISON_INUSE	0x5a	/* for use-uninitialised poisoning */
     49#define POISON_FREE	0x6b	/* for use-after-free poisoning */
     50#define	POISON_END	0xa5	/* end-byte of poisoning */
     51
     52/********** arch/$ARCH/mm/init.c **********/
     53#define POISON_FREE_INITMEM	0xcc
     54
     55/********** arch/ia64/hp/common/sba_iommu.c **********/
     56/*
     57 * arch/ia64/hp/common/sba_iommu.c uses a 16-byte poison string with a
     58 * value of "SBAIOMMU POISON\0" for spill-over poisoning.
     59 */
     60
     61/********** fs/jbd/journal.c **********/
     62#define JBD_POISON_FREE		0x5b
     63#define JBD2_POISON_FREE	0x5c
     64
     65/********** drivers/base/dmapool.c **********/
     66#define	POOL_POISON_FREED	0xa7	/* !inuse */
     67#define	POOL_POISON_ALLOCATED	0xa9	/* !initted */
     68
     69/********** drivers/atm/ **********/
     70#define ATM_POISON_FREE		0x12
     71#define ATM_POISON		0xdeadbeef
     72
     73/********** kernel/mutexes **********/
     74#define MUTEX_DEBUG_INIT	0x11
     75#define MUTEX_DEBUG_FREE	0x22
     76#define MUTEX_POISON_WW_CTX	((void *) 0x500 + POISON_POINTER_DELTA)
     77
     78/********** security/ **********/
     79#define KEY_DESTROY		0xbd
     80
     81/********** net/core/page_pool.c **********/
     82#define PP_SIGNATURE		(0x40 + POISON_POINTER_DELTA)
     83
     84#endif