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usr
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src
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linux-headers-6.8.0-36-generic
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include
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linux
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drwxr-xr-x
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poison.h
/* SPDX-License-Identifier: GPL-2.0 */ #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 *) 0x122 + POISON_POINTER_DELTA) /********** include/linux/timer.h **********/ #define TIMER_ENTRY_STATIC ((void *) 0x300 + POISON_POINTER_DELTA) /********** mm/page_poison.c **********/ #define PAGE_POISON 0xaa /********** 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 #define MUTEX_POISON_WW_CTX ((void *) 0x500 + POISON_POINTER_DELTA) /********** security/ **********/ #define KEY_DESTROY 0xbd /********** net/core/page_pool.c **********/ #define PP_SIGNATURE (0x40 + POISON_POINTER_DELTA) /********** net/core/skbuff.c **********/ #define SKB_LIST_POISON_NEXT ((void *)(0x800 + POISON_POINTER_DELTA)) /********** net/ **********/ #define NET_PTR_POISON ((void *)(0x801 + POISON_POINTER_DELTA)) /********** kernel/bpf/ **********/ #define BPF_PTR_POISON ((void *)(0xeB9FUL + POISON_POINTER_DELTA)) /********** VFS **********/ #define VFS_PTR_POISON ((void *)(0xF5 + POISON_POINTER_DELTA)) /********** lib/stackdepot.c **********/ #define STACK_DEPOT_POISON ((void *)(0xD390 + POISON_POINTER_DELTA)) #endif
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