diff options
Diffstat (limited to 'mm/kasan/kasan.c')
| -rw-r--r-- | mm/kasan/kasan.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/mm/kasan/kasan.c b/mm/kasan/kasan.c index 32f555ded938..77c103748728 100644 --- a/mm/kasan/kasan.c +++ b/mm/kasan/kasan.c @@ -588,17 +588,22 @@ void kasan_krealloc(const void *object, size_t size, gfp_t flags) kasan_kmalloc(page->slab_cache, object, size, flags); } -void kasan_poison_kfree(void *ptr) +void kasan_poison_kfree(void *ptr, unsigned long ip) { struct page *page; page = virt_to_head_page(ptr); - if (unlikely(!PageSlab(page))) + if (unlikely(!PageSlab(page))) { + if (ptr != page_address(page)) { + kasan_report_invalid_free(ptr, ip); + return; + } kasan_poison_shadow(ptr, PAGE_SIZE << compound_order(page), KASAN_FREE_PAGE); - else + } else { kasan_poison_slab_free(page->slab_cache, ptr); + } } void kasan_kfree_large(void *ptr, unsigned long ip) |