1 /* SPDX-License-Identifier: GPL-2.0 */
6 #include <linux/kasan-enabled.h>
7 #include <linux/kasan-tags.h>
13 struct page;
32 #define KASAN_VMALLOC_PAGE_RANGE 0x1 /* Apply exsiting page range */
112 void __kasan_poison_pages(struct page *page, unsigned int order, bool init);
113 static __always_inline void kasan_poison_pages(struct page *page,  in kasan_poison_pages()  argument
117 		__kasan_poison_pages(page, order, init);  in kasan_poison_pages()
120 bool __kasan_unpoison_pages(struct page *page, unsigned int order, bool init);
121 static __always_inline bool kasan_unpoison_pages(struct page *page,  in kasan_unpoison_pages()  argument
125 		return __kasan_unpoison_pages(page, order, init);  in kasan_unpoison_pages()
138  * kasan_unpoison_new_object - Temporarily unpoison a new slab object.
156  * kasan_poison_new_object - Repoison a new slab object.
184  * kasan_slab_pre_free - Check whether freeing a slab object is safe.
188  * check for double-free and invalid-free bugs and report them.
205  * kasan_slab_free - Poison, initialize, and quarantine a slab object.
284 bool __kasan_mempool_poison_pages(struct page *page, unsigned int order,
287  * kasan_mempool_poison_pages - Check and poison a mempool page allocation.
288  * @page: Pointer to the page allocation.
291  * This function is intended for kernel subsystems that cache page allocations
295  * page allocations.
302 static __always_inline bool kasan_mempool_poison_pages(struct page *page,  in kasan_mempool_poison_pages()  argument
306 		return __kasan_mempool_poison_pages(page, order, _RET_IP_);  in kasan_mempool_poison_pages()
310 void __kasan_mempool_unpoison_pages(struct page *page, unsigned int order,
313  * kasan_mempool_unpoison_pages - Unpoison a mempool page allocation.
314  * @page: Pointer to the page allocation.
317  * This function is intended for kernel subsystems that cache page allocations
320  * This function unpoisons a page allocation that was previously poisoned by
322  * the tag-based modes, this function assigns a new tag to the allocation.
324 static __always_inline void kasan_mempool_unpoison_pages(struct page *page,  in kasan_mempool_unpoison_pages()  argument
328 		__kasan_mempool_unpoison_pages(page, order, _RET_IP_);  in kasan_mempool_unpoison_pages()
333  * kasan_mempool_poison_object - Check and poison a mempool slab allocation.
344  * This function also performs checks to detect double-free and invalid-free
366  * kasan_mempool_unpoison_object - Unpoison a mempool slab allocation.
376  * initializing the allocation's memory. For the tag-based modes, this function
378  * original tags based on the pointer value.
393  * the hardware tag-based mode that doesn't rely on compiler instrumentation.
406 static inline void kasan_poison_pages(struct page *page, unsigned int order,  in kasan_poison_pages()  argument
408 static inline bool kasan_unpoison_pages(struct page *page, unsigned int order,  in kasan_unpoison_pages()  argument
454 static inline bool kasan_mempool_poison_pages(struct page *page, unsigned int order)  in kasan_mempool_poison_pages()  argument
458 static inline void kasan_mempool_unpoison_pages(struct page *page, unsigned int order) {}  in kasan_mempool_unpoison_pages()  argument
497 /* Tag-based KASAN modes do not use per-object metadata. */
503 /* And no cache-related metadata initialization is required. */
522  * kasan_report - print a report about a bad memory access detected by KASAN