mm/kasan/kasan.h

   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
   9 struct kasan_access_info {
  10         const void *access_addr;
  11         const void *first_bad_addr;
  12         size_t access_size;
  13         bool is_write;
  14         unsigned long ip;
  15 };
  16
  17 void kasan_report_error(struct kasan_access_info *info);
  18 void kasan_report_user_access(struct kasan_access_info *info);
  19
  20 static inline const void *kasan_shadow_to_mem(const void *shadow_addr)
  21 {
  22         return (void *)(((unsigned long)shadow_addr - KASAN_SHADOW_OFFSET)
  23                 << KASAN_SHADOW_SCALE_SHIFT);
  24 }
  25
  26 static inline bool kasan_enabled(void)
  27 {
  28         return !current->kasan_depth;
  29 }
  30
  31 void kasan_report(unsigned long addr, size_t size,
  32                 bool is_write, unsigned long ip);
  33
  34 #endif