1 #ifndef __MM_KASAN_KASAN_H
2 #define __MM_KASAN_KASAN_H
4 #include <linux/kasan.h>
6 #define KASAN_SHADOW_SCALE_SIZE (1UL << KASAN_SHADOW_SCALE_SHIFT)
7 #define KASAN_SHADOW_MASK (KASAN_SHADOW_SCALE_SIZE - 1)
9 #define KASAN_FREE_PAGE 0xFF /* page was freed */
10 #define KASAN_PAGE_REDZONE 0xFE /* redzone for kmalloc_large allocations */
11 #define KASAN_KMALLOC_REDZONE 0xFC /* redzone inside slub object */
12 #define KASAN_KMALLOC_FREE 0xFB /* object was freed (kmem_cache_free/kfree) */
13 #define KASAN_GLOBAL_REDZONE 0xFA /* redzone for global variable */
16 * Stack redzone shadow values
17 * (Those are compiler's ABI, don't change them)
19 #define KASAN_STACK_LEFT 0xF1
20 #define KASAN_STACK_MID 0xF2
21 #define KASAN_STACK_RIGHT 0xF3
22 #define KASAN_STACK_PARTIAL 0xF4
24 /* Don't break randconfig/all*config builds */
25 #ifndef KASAN_ABI_VERSION
26 #define KASAN_ABI_VERSION 1
29 struct kasan_access_info {
30 const void *access_addr;
31 const void *first_bad_addr;
37 /* The layout of struct dictated by compiler */
38 struct kasan_source_location {
44 /* The layout of struct dictated by compiler */
46 const void *beg; /* Address of the beginning of the global variable. */
47 size_t size; /* Size of the global variable. */
48 size_t size_with_redzone; /* Size of the variable + size of the red zone. 32 bytes aligned */
50 const void *module_name; /* Name of the module where the global variable is declared. */
51 unsigned long has_dynamic_init; /* This needed for C++ */
52 #if KASAN_ABI_VERSION >= 4
53 struct kasan_source_location *location;
57 static inline const void *kasan_shadow_to_mem(const void *shadow_addr)
59 return (void *)(((unsigned long)shadow_addr - KASAN_SHADOW_OFFSET)
60 << KASAN_SHADOW_SCALE_SHIFT);
63 static inline bool kasan_report_enabled(void)
65 return !current->kasan_depth;
68 void kasan_report(unsigned long addr, size_t size,
69 bool is_write, unsigned long ip);