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0b24becc AR |
1 | #ifndef __MM_KASAN_KASAN_H |
2 | #define __MM_KASAN_KASAN_H | |
3 | ||
4 | #include <linux/kasan.h> | |
5 | ||
6 | #define KASAN_SHADOW_SCALE_SIZE (1UL << KASAN_SHADOW_SCALE_SHIFT) | |
7 | #define KASAN_SHADOW_MASK (KASAN_SHADOW_SCALE_SIZE - 1) | |
8 | ||
b8c73fc2 | 9 | #define KASAN_FREE_PAGE 0xFF /* page was freed */ |
0316bec2 AR |
10 | #define KASAN_FREE_PAGE 0xFF /* page was freed */ |
11 | #define KASAN_PAGE_REDZONE 0xFE /* redzone for kmalloc_large allocations */ | |
12 | #define KASAN_KMALLOC_REDZONE 0xFC /* redzone inside slub object */ | |
13 | #define KASAN_KMALLOC_FREE 0xFB /* object was freed (kmem_cache_free/kfree) */ | |
14 | ||
b8c73fc2 | 15 | |
0b24becc AR |
16 | struct kasan_access_info { |
17 | const void *access_addr; | |
18 | const void *first_bad_addr; | |
19 | size_t access_size; | |
20 | bool is_write; | |
21 | unsigned long ip; | |
22 | }; | |
23 | ||
24 | void kasan_report_error(struct kasan_access_info *info); | |
25 | void kasan_report_user_access(struct kasan_access_info *info); | |
26 | ||
27 | static inline const void *kasan_shadow_to_mem(const void *shadow_addr) | |
28 | { | |
29 | return (void *)(((unsigned long)shadow_addr - KASAN_SHADOW_OFFSET) | |
30 | << KASAN_SHADOW_SCALE_SHIFT); | |
31 | } | |
32 | ||
33 | static inline bool kasan_enabled(void) | |
34 | { | |
35 | return !current->kasan_depth; | |
36 | } | |
37 | ||
38 | void kasan_report(unsigned long addr, size_t size, | |
39 | bool is_write, unsigned long ip); | |
40 | ||
41 | #endif |