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-rw-r--r--kernel/include/linux/kasan.h10
1 files changed, 9 insertions, 1 deletions
diff --git a/kernel/include/linux/kasan.h b/kernel/include/linux/kasan.h
index 5486d777b..4b9f85c96 100644
--- a/kernel/include/linux/kasan.h
+++ b/kernel/include/linux/kasan.h
@@ -10,11 +10,19 @@ struct vm_struct;
#ifdef CONFIG_KASAN
#define KASAN_SHADOW_SCALE_SHIFT 3
-#define KASAN_SHADOW_OFFSET _AC(CONFIG_KASAN_SHADOW_OFFSET, UL)
#include <asm/kasan.h>
+#include <asm/pgtable.h>
#include <linux/sched.h>
+extern unsigned char kasan_zero_page[PAGE_SIZE];
+extern pte_t kasan_zero_pte[PTRS_PER_PTE];
+extern pmd_t kasan_zero_pmd[PTRS_PER_PMD];
+extern pud_t kasan_zero_pud[PTRS_PER_PUD];
+
+void kasan_populate_zero_shadow(const void *shadow_start,
+ const void *shadow_end);
+
static inline void *kasan_mem_to_shadow(const void *addr)
{
return (void *)((unsigned long)addr >> KASAN_SHADOW_SCALE_SHIFT)