]>
git.proxmox.com Git - mirror_ubuntu-artful-kernel.git/blob - include/linux/kasan.h
4 #include <linux/types.h>
13 #define KASAN_SHADOW_SCALE_SHIFT 3
15 #include <asm/kasan.h>
16 #include <asm/pgtable.h>
18 extern unsigned char kasan_zero_page
[PAGE_SIZE
];
19 extern pte_t kasan_zero_pte
[PTRS_PER_PTE
];
20 extern pmd_t kasan_zero_pmd
[PTRS_PER_PMD
];
21 extern pud_t kasan_zero_pud
[PTRS_PER_PUD
];
22 extern p4d_t kasan_zero_p4d
[PTRS_PER_P4D
];
24 void kasan_populate_zero_shadow(const void *shadow_start
,
25 const void *shadow_end
);
27 static inline void *kasan_mem_to_shadow(const void *addr
)
29 return (void *)((unsigned long)addr
>> KASAN_SHADOW_SCALE_SHIFT
)
30 + KASAN_SHADOW_OFFSET
;
33 /* Enable reporting bugs after kasan_disable_current() */
34 extern void kasan_enable_current(void);
36 /* Disable reporting bugs for current task */
37 extern void kasan_disable_current(void);
39 void kasan_unpoison_shadow(const void *address
, size_t size
);
41 void kasan_unpoison_task_stack(struct task_struct
*task
);
42 void kasan_unpoison_stack_above_sp_to(const void *watermark
);
44 void kasan_alloc_pages(struct page
*page
, unsigned int order
);
45 void kasan_free_pages(struct page
*page
, unsigned int order
);
47 void kasan_cache_create(struct kmem_cache
*cache
, size_t *size
,
48 unsigned long *flags
);
49 void kasan_cache_shrink(struct kmem_cache
*cache
);
50 void kasan_cache_shutdown(struct kmem_cache
*cache
);
52 void kasan_poison_slab(struct page
*page
);
53 void kasan_unpoison_object_data(struct kmem_cache
*cache
, void *object
);
54 void kasan_poison_object_data(struct kmem_cache
*cache
, void *object
);
55 void kasan_init_slab_obj(struct kmem_cache
*cache
, const void *object
);
57 void kasan_kmalloc_large(const void *ptr
, size_t size
, gfp_t flags
);
58 void kasan_kfree_large(const void *ptr
);
59 void kasan_poison_kfree(void *ptr
);
60 void kasan_kmalloc(struct kmem_cache
*s
, const void *object
, size_t size
,
62 void kasan_krealloc(const void *object
, size_t new_size
, gfp_t flags
);
64 void kasan_slab_alloc(struct kmem_cache
*s
, void *object
, gfp_t flags
);
65 bool kasan_slab_free(struct kmem_cache
*s
, void *object
);
68 int alloc_meta_offset
;
72 int kasan_module_alloc(void *addr
, size_t size
);
73 void kasan_free_shadow(const struct vm_struct
*vm
);
75 size_t ksize(const void *);
76 static inline void kasan_unpoison_slab(const void *ptr
) { ksize(ptr
); }
77 size_t kasan_metadata_size(struct kmem_cache
*cache
);
79 bool kasan_save_enable_multi_shot(void);
80 void kasan_restore_multi_shot(bool enabled
);
82 #else /* CONFIG_KASAN */
84 static inline void kasan_unpoison_shadow(const void *address
, size_t size
) {}
86 static inline void kasan_unpoison_task_stack(struct task_struct
*task
) {}
87 static inline void kasan_unpoison_stack_above_sp_to(const void *watermark
) {}
89 static inline void kasan_enable_current(void) {}
90 static inline void kasan_disable_current(void) {}
92 static inline void kasan_alloc_pages(struct page
*page
, unsigned int order
) {}
93 static inline void kasan_free_pages(struct page
*page
, unsigned int order
) {}
95 static inline void kasan_cache_create(struct kmem_cache
*cache
,
97 unsigned long *flags
) {}
98 static inline void kasan_cache_shrink(struct kmem_cache
*cache
) {}
99 static inline void kasan_cache_shutdown(struct kmem_cache
*cache
) {}
101 static inline void kasan_poison_slab(struct page
*page
) {}
102 static inline void kasan_unpoison_object_data(struct kmem_cache
*cache
,
104 static inline void kasan_poison_object_data(struct kmem_cache
*cache
,
106 static inline void kasan_init_slab_obj(struct kmem_cache
*cache
,
107 const void *object
) {}
109 static inline void kasan_kmalloc_large(void *ptr
, size_t size
, gfp_t flags
) {}
110 static inline void kasan_kfree_large(const void *ptr
) {}
111 static inline void kasan_poison_kfree(void *ptr
) {}
112 static inline void kasan_kmalloc(struct kmem_cache
*s
, const void *object
,
113 size_t size
, gfp_t flags
) {}
114 static inline void kasan_krealloc(const void *object
, size_t new_size
,
117 static inline void kasan_slab_alloc(struct kmem_cache
*s
, void *object
,
119 static inline bool kasan_slab_free(struct kmem_cache
*s
, void *object
)
124 static inline int kasan_module_alloc(void *addr
, size_t size
) { return 0; }
125 static inline void kasan_free_shadow(const struct vm_struct
*vm
) {}
127 static inline void kasan_unpoison_slab(const void *ptr
) { }
128 static inline size_t kasan_metadata_size(struct kmem_cache
*cache
) { return 0; }
130 #endif /* CONFIG_KASAN */
132 #endif /* LINUX_KASAN_H */