diff options
Diffstat (limited to 'mm/kasan/common.c')
| -rw-r--r-- | mm/kasan/common.c | 15 |
1 files changed, 4 insertions, 11 deletions
diff --git a/mm/kasan/common.c b/mm/kasan/common.c index d4c14359feaf..1d27f1bd260b 100644 --- a/mm/kasan/common.c +++ b/mm/kasan/common.c @@ -305,9 +305,6 @@ bool __kasan_slab_free(struct kmem_cache *cache, void *object, bool init, static inline bool check_page_allocation(void *ptr, unsigned long ip) { - if (!kasan_enabled()) - return false; - if (ptr != page_address(virt_to_head_page(ptr))) { kasan_report_invalid_free(ptr, ip, KASAN_REPORT_INVALID_FREE); return true; @@ -520,24 +517,20 @@ void __kasan_mempool_unpoison_pages(struct page *page, unsigned int order, bool __kasan_mempool_poison_object(void *ptr, unsigned long ip) { - struct folio *folio = virt_to_folio(ptr); + struct page *page = virt_to_page(ptr); struct slab *slab; - /* - * This function can be called for large kmalloc allocation that get - * their memory from page_alloc. Thus, the folio might not be a slab. - */ - if (unlikely(!folio_test_slab(folio))) { + if (unlikely(PageLargeKmalloc(page))) { if (check_page_allocation(ptr, ip)) return false; - kasan_poison(ptr, folio_size(folio), KASAN_PAGE_FREE, false); + kasan_poison(ptr, page_size(page), KASAN_PAGE_FREE, false); return true; } if (is_kfence_address(ptr)) return true; - slab = folio_slab(folio); + slab = page_slab(page); if (check_slab_allocation(slab->slab_cache, ptr, ip)) return false; |