1 /* SPDX-License-Identifier: GPL-2.0 */
6 #include <linux/kasan-enabled.h>
7 #include <linux/kasan-tags.h>
13 struct page;
109 void __kasan_poison_pages(struct page *page, unsigned int order, bool init);
110 static __always_inline void kasan_poison_pages(struct page *page,  in kasan_poison_pages()  argument
114 		__kasan_poison_pages(page, order, init);  in kasan_poison_pages()
117 bool __kasan_unpoison_pages(struct page *page, unsigned int order, bool init);
118 static __always_inline bool kasan_unpoison_pages(struct page *page,  in kasan_unpoison_pages()  argument
122 		return __kasan_unpoison_pages(page, order, init);  in kasan_unpoison_pages()
135  * kasan_unpoison_new_object - Temporarily unpoison a new slab object.
153  * kasan_unpoison_new_object - Repoison a new slab object.
235 bool __kasan_mempool_poison_pages(struct page *page, unsigned int order,
238  * kasan_mempool_poison_pages - Check and poison a mempool page allocation.
239  * @page: Pointer to the page allocation.
242  * This function is intended for kernel subsystems that cache page allocations
246  * page allocations.
253 static __always_inline bool kasan_mempool_poison_pages(struct page *page,  in kasan_mempool_poison_pages()  argument
257 		return __kasan_mempool_poison_pages(page, order, _RET_IP_);  in kasan_mempool_poison_pages()
261 void __kasan_mempool_unpoison_pages(struct page *page, unsigned int order,
264  * kasan_mempool_unpoison_pages - Unpoison a mempool page allocation.
265  * @page: Pointer to the page allocation.
268  * This function is intended for kernel subsystems that cache page allocations
271  * This function unpoisons a page allocation that was previously poisoned by
273  * the tag-based modes, this function assigns a new tag to the allocation.
275 static __always_inline void kasan_mempool_unpoison_pages(struct page *page,  in kasan_mempool_unpoison_pages()  argument
279 		__kasan_mempool_unpoison_pages(page, order, _RET_IP_);  in kasan_mempool_unpoison_pages()
284  * kasan_mempool_poison_object - Check and poison a mempool slab allocation.
295  * This function also performs checks to detect double-free and invalid-free
317  * kasan_mempool_unpoison_object - Unpoison a mempool slab allocation.
327  * initializing the allocation's memory. For the tag-based modes, this function
329  * original tags based on the pointer value.
344  * the hardware tag-based mode that doesn't rely on compiler instrumentation.
357 static inline void kasan_poison_pages(struct page *page, unsigned int order,  in kasan_poison_pages()  argument
359 static inline bool kasan_unpoison_pages(struct page *page, unsigned int order,  in kasan_unpoison_pages()  argument
398 static inline bool kasan_mempool_poison_pages(struct page *page, unsigned int order)  in kasan_mempool_poison_pages()  argument
402 static inline void kasan_mempool_unpoison_pages(struct page *page, unsigned int order) {}  in kasan_mempool_unpoison_pages()  argument
443 /* Tag-based KASAN modes do not use per-object metadata. */
454 /* And no cache-related metadata initialization is required. */
474  * kasan_report - print a report about a bad memory access detected by KASAN