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89 lines
2.5 KiB
89 lines
2.5 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef _LINUX_POISON_H |
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#define _LINUX_POISON_H |
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/********** include/linux/list.h **********/ |
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/* |
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* Architectures might want to move the poison pointer offset |
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* into some well-recognized area such as 0xdead000000000000, |
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* that is also not mappable by user-space exploits: |
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*/ |
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#ifdef CONFIG_ILLEGAL_POINTER_VALUE |
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# define POISON_POINTER_DELTA _AC(CONFIG_ILLEGAL_POINTER_VALUE, UL) |
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#else |
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# define POISON_POINTER_DELTA 0 |
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#endif |
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#ifdef __cplusplus |
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#define LIST_POISON1 NULL |
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#define LIST_POISON2 NULL |
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#else |
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/* |
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* These are non-NULL pointers that will result in page faults |
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* under normal circumstances, used to verify that nobody uses |
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* non-initialized list entries. |
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*/ |
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#define LIST_POISON1 ((void *) 0x100 + POISON_POINTER_DELTA) |
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#define LIST_POISON2 ((void *) 0x200 + POISON_POINTER_DELTA) |
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#endif |
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/********** include/linux/timer.h **********/ |
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/* |
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* Magic number "tsta" to indicate a static timer initializer |
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* for the object debugging code. |
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*/ |
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#define TIMER_ENTRY_STATIC ((void *) 0x300 + POISON_POINTER_DELTA) |
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/********** mm/page_poison.c **********/ |
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#define PAGE_POISON 0xaa |
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/********** mm/page_alloc.c ************/ |
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#define TAIL_MAPPING ((void *) 0x400 + POISON_POINTER_DELTA) |
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/********** mm/slab.c **********/ |
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/* |
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* Magic nums for obj red zoning. |
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* Placed in the first word before and the first word after an obj. |
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*/ |
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#define RED_INACTIVE 0x09F911029D74E35BULL /* when obj is inactive */ |
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#define RED_ACTIVE 0xD84156C5635688C0ULL /* when obj is active */ |
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#define SLUB_RED_INACTIVE 0xbb |
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#define SLUB_RED_ACTIVE 0xcc |
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/* ...and for poisoning */ |
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#define POISON_INUSE 0x5a /* for use-uninitialised poisoning */ |
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#define POISON_FREE 0x6b /* for use-after-free poisoning */ |
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#define POISON_END 0xa5 /* end-byte of poisoning */ |
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/********** arch/$ARCH/mm/init.c **********/ |
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#define POISON_FREE_INITMEM 0xcc |
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/********** arch/ia64/hp/common/sba_iommu.c **********/ |
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/* |
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* arch/ia64/hp/common/sba_iommu.c uses a 16-byte poison string with a |
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* value of "SBAIOMMU POISON\0" for spill-over poisoning. |
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*/ |
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/********** fs/jbd/journal.c **********/ |
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#define JBD_POISON_FREE 0x5b |
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#define JBD2_POISON_FREE 0x5c |
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/********** drivers/base/dmapool.c **********/ |
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#define POOL_POISON_FREED 0xa7 /* !inuse */ |
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#define POOL_POISON_ALLOCATED 0xa9 /* !initted */ |
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/********** drivers/atm/ **********/ |
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#define ATM_POISON_FREE 0x12 |
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#define ATM_POISON 0xdeadbeef |
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/********** kernel/mutexes **********/ |
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#define MUTEX_DEBUG_INIT 0x11 |
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#define MUTEX_DEBUG_FREE 0x22 |
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/********** security/ **********/ |
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#define KEY_DESTROY 0xbd |
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#endif
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