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-rw-r--r--mm/kasan/kasan.h34
1 files changed, 34 insertions, 0 deletions
diff --git a/mm/kasan/kasan.h b/mm/kasan/kasan.h
new file mode 100644
index 000000000000..648b9c006f3f
--- /dev/null
+++ b/mm/kasan/kasan.h
@@ -0,0 +1,34 @@
+#ifndef __MM_KASAN_KASAN_H
+#define __MM_KASAN_KASAN_H
+
+#include <linux/kasan.h>
+
+#define KASAN_SHADOW_SCALE_SIZE (1UL << KASAN_SHADOW_SCALE_SHIFT)
+#define KASAN_SHADOW_MASK (KASAN_SHADOW_SCALE_SIZE - 1)
+
+struct kasan_access_info {
+ const void *access_addr;
+ const void *first_bad_addr;
+ size_t access_size;
+ bool is_write;
+ unsigned long ip;
+};
+
+void kasan_report_error(struct kasan_access_info *info);
+void kasan_report_user_access(struct kasan_access_info *info);
+
+static inline const void *kasan_shadow_to_mem(const void *shadow_addr)
+{
+ return (void *)(((unsigned long)shadow_addr - KASAN_SHADOW_OFFSET)
+ << KASAN_SHADOW_SCALE_SHIFT);
+}
+
+static inline bool kasan_enabled(void)
+{
+ return !current->kasan_depth;
+}
+
+void kasan_report(unsigned long addr, size_t size,
+ bool is_write, unsigned long ip);
+
+#endif

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