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-rw-r--r--mm/kasan/common.c8
1 files changed, 3 insertions, 5 deletions
diff --git a/mm/kasan/common.c b/mm/kasan/common.c
index 6b6f1198c72b..307631d9c62b 100644
--- a/mm/kasan/common.c
+++ b/mm/kasan/common.c
@@ -338,8 +338,7 @@ void kasan_poison_slab(struct page *page)
for (i = 0; i < (1 << compound_order(page)); i++)
page_kasan_tag_reset(page + i);
- kasan_poison_shadow(page_address(page),
- PAGE_SIZE << compound_order(page),
+ kasan_poison_shadow(page_address(page), page_size(page),
KASAN_KMALLOC_REDZONE);
}
@@ -542,7 +541,7 @@ void * __must_check kasan_kmalloc_large(const void *ptr, size_t size,
page = virt_to_page(ptr);
redzone_start = round_up((unsigned long)(ptr + size),
KASAN_SHADOW_SCALE_SIZE);
- redzone_end = (unsigned long)ptr + (PAGE_SIZE << compound_order(page));
+ redzone_end = (unsigned long)ptr + page_size(page);
kasan_unpoison_shadow(ptr, size);
kasan_poison_shadow((void *)redzone_start, redzone_end - redzone_start,
@@ -578,8 +577,7 @@ void kasan_poison_kfree(void *ptr, unsigned long ip)
kasan_report_invalid_free(ptr, ip);
return;
}
- kasan_poison_shadow(ptr, PAGE_SIZE << compound_order(page),
- KASAN_FREE_PAGE);
+ kasan_poison_shadow(ptr, page_size(page), KASAN_FREE_PAGE);
} else {
__kasan_slab_free(page->slab_cache, ptr, ip, false);
}