kasan.h

  1/* SPDX-License-Identifier: GPL-2.0 */
  2#ifndef __MM_KASAN_KASAN_H
  3#define __MM_KASAN_KASAN_H
  4
  5#include <linux/atomic.h>
  6#include <linux/kasan.h>
  7#include <linux/kasan-tags.h>
  8#include <linux/kfence.h>
  9#include <linux/stackdepot.h>
 10
 11#if defined(CONFIG_KASAN_SW_TAGS) || defined(CONFIG_KASAN_HW_TAGS)
 12
 13#include <linux/static_key.h>
 14
 15DECLARE_STATIC_KEY_TRUE(kasan_flag_stacktrace);
 16
 17static inline bool kasan_stack_collection_enabled(void)
 18{
 19	return static_branch_unlikely(&kasan_flag_stacktrace);
 20}
 21
 22#else /* CONFIG_KASAN_SW_TAGS || CONFIG_KASAN_HW_TAGS */
 23
 24static inline bool kasan_stack_collection_enabled(void)
 25{
 26	return true;
 27}
 28
 29#endif /* CONFIG_KASAN_SW_TAGS || CONFIG_KASAN_HW_TAGS */
 30
 31#ifdef CONFIG_KASAN_HW_TAGS
 32
 33#include "../slab.h"
 34
 35DECLARE_STATIC_KEY_TRUE(kasan_flag_vmalloc);
 36
 37enum kasan_mode {
 38	KASAN_MODE_SYNC,
 39	KASAN_MODE_ASYNC,
 40	KASAN_MODE_ASYMM,
 41};
 42
 43extern enum kasan_mode kasan_mode __ro_after_init;
 44
 45extern unsigned long kasan_page_alloc_sample;
 46extern unsigned int kasan_page_alloc_sample_order;
 47DECLARE_PER_CPU(long, kasan_page_alloc_skip);
 48
 49static inline bool kasan_vmalloc_enabled(void)
 50{
 51	/* Static branch is never enabled with CONFIG_KASAN_VMALLOC disabled. */
 52	return static_branch_likely(&kasan_flag_vmalloc);
 53}
 54
 55static inline bool kasan_async_fault_possible(void)
 56{
 57	return kasan_mode == KASAN_MODE_ASYNC || kasan_mode == KASAN_MODE_ASYMM;
 58}
 59
 60static inline bool kasan_sync_fault_possible(void)
 61{
 62	return kasan_mode == KASAN_MODE_SYNC || kasan_mode == KASAN_MODE_ASYMM;
 63}
 64
 65static inline bool kasan_sample_page_alloc(unsigned int order)
 66{
 67	/* Fast-path for when sampling is disabled. */
 68	if (kasan_page_alloc_sample == 1)
 69		return true;
 70
 71	if (order < kasan_page_alloc_sample_order)
 72		return true;
 73
 74	if (this_cpu_dec_return(kasan_page_alloc_skip) < 0) {
 75		this_cpu_write(kasan_page_alloc_skip,
 76			       kasan_page_alloc_sample - 1);
 77		return true;
 78	}
 79
 80	return false;
 81}
 82
 83#else /* CONFIG_KASAN_HW_TAGS */
 84
 85static inline bool kasan_vmalloc_enabled(void)
 86{
 87	return IS_ENABLED(CONFIG_KASAN_VMALLOC);
 88}
 89
 90static inline bool kasan_async_fault_possible(void)
 91{
 92	return false;
 93}
 94
 95static inline bool kasan_sync_fault_possible(void)
 96{
 97	return true;
 98}
 99
100static inline bool kasan_sample_page_alloc(unsigned int order)
101{
102	return true;
103}
104
105#endif /* CONFIG_KASAN_HW_TAGS */
106
107#ifdef CONFIG_KASAN_GENERIC
108
109/*
110 * Generic KASAN uses per-object metadata to store alloc and free stack traces
111 * and the quarantine link.
112 */
113static inline bool kasan_requires_meta(void)
114{
115	return true;
116}
117
118#else /* CONFIG_KASAN_GENERIC */
119
120/*
121 * Tag-based KASAN modes do not use per-object metadata: they use the stack
122 * ring to store alloc and free stack traces and do not use qurantine.
123 */
124static inline bool kasan_requires_meta(void)
125{
126	return false;
127}
128
129#endif /* CONFIG_KASAN_GENERIC */
130
131#if defined(CONFIG_KASAN_GENERIC) || defined(CONFIG_KASAN_SW_TAGS)
132#define KASAN_GRANULE_SIZE	(1UL << KASAN_SHADOW_SCALE_SHIFT)
133#else
134#include <asm/mte-kasan.h>
135#define KASAN_GRANULE_SIZE	MTE_GRANULE_SIZE
136#endif
137
138#define KASAN_GRANULE_MASK	(KASAN_GRANULE_SIZE - 1)
139
140#define KASAN_MEMORY_PER_SHADOW_PAGE	(KASAN_GRANULE_SIZE << PAGE_SHIFT)
141
142#ifdef CONFIG_KASAN_GENERIC
143#define KASAN_PAGE_FREE		0xFF  /* freed page */
144#define KASAN_PAGE_REDZONE	0xFE  /* redzone for kmalloc_large allocation */
145#define KASAN_SLAB_REDZONE	0xFC  /* redzone for slab object */
146#define KASAN_SLAB_FREE		0xFB  /* freed slab object */
147#define KASAN_VMALLOC_INVALID	0xF8  /* inaccessible space in vmap area */
148#else
149#define KASAN_PAGE_FREE		KASAN_TAG_INVALID
150#define KASAN_PAGE_REDZONE	KASAN_TAG_INVALID
151#define KASAN_SLAB_REDZONE	KASAN_TAG_INVALID
152#define KASAN_SLAB_FREE		KASAN_TAG_INVALID
153#define KASAN_VMALLOC_INVALID	KASAN_TAG_INVALID /* only used for SW_TAGS */
154#endif
155
156#ifdef CONFIG_KASAN_GENERIC
157
158#define KASAN_SLAB_FREE_META	0xFA  /* freed slab object with free meta */
159#define KASAN_GLOBAL_REDZONE	0xF9  /* redzone for global variable */
160
161/* Stack redzone shadow values. Compiler ABI, do not change. */
162#define KASAN_STACK_LEFT	0xF1
163#define KASAN_STACK_MID		0xF2
164#define KASAN_STACK_RIGHT	0xF3
165#define KASAN_STACK_PARTIAL	0xF4
166
167/* alloca redzone shadow values. */
168#define KASAN_ALLOCA_LEFT	0xCA
169#define KASAN_ALLOCA_RIGHT	0xCB
170
171/* alloca redzone size. Compiler ABI, do not change. */
172#define KASAN_ALLOCA_REDZONE_SIZE	32
173
174/* Stack frame marker. Compiler ABI, do not change. */
175#define KASAN_CURRENT_STACK_FRAME_MAGIC 0x41B58AB3
176
177/* Dummy value to avoid breaking randconfig/all*config builds. */
178#ifndef KASAN_ABI_VERSION
179#define KASAN_ABI_VERSION 1
180#endif
181
182#endif /* CONFIG_KASAN_GENERIC */
183
184/* Metadata layout customization. */
185#define META_BYTES_PER_BLOCK 1
186#define META_BLOCKS_PER_ROW 16
187#define META_BYTES_PER_ROW (META_BLOCKS_PER_ROW * META_BYTES_PER_BLOCK)
188#define META_MEM_BYTES_PER_ROW (META_BYTES_PER_ROW * KASAN_GRANULE_SIZE)
189#define META_ROWS_AROUND_ADDR 2
190
191#define KASAN_STACK_DEPTH 64
192
193struct kasan_track {
194	u32 pid;
195	depot_stack_handle_t stack;
196#ifdef CONFIG_KASAN_EXTRA_INFO
197	u64 cpu:20;
198	u64 timestamp:44;
199#endif /* CONFIG_KASAN_EXTRA_INFO */
200};
201
202enum kasan_report_type {
203	KASAN_REPORT_ACCESS,
204	KASAN_REPORT_INVALID_FREE,
205	KASAN_REPORT_DOUBLE_FREE,
206};
207
208struct kasan_report_info {
209	/* Filled in by kasan_report_*(). */
210	enum kasan_report_type type;
211	const void *access_addr;
212	size_t access_size;
213	bool is_write;
214	unsigned long ip;
215
216	/* Filled in by the common reporting code. */
217	const void *first_bad_addr;
218	struct kmem_cache *cache;
219	void *object;
220	size_t alloc_size;
221
222	/* Filled in by the mode-specific reporting code. */
223	const char *bug_type;
224	struct kasan_track alloc_track;
225	struct kasan_track free_track;
226};
227
228/* Do not change the struct layout: compiler ABI. */
229struct kasan_source_location {
230	const char *filename;
231	int line_no;
232	int column_no;
233};
234
235/* Do not change the struct layout: compiler ABI. */
236struct kasan_global {
237	const void *beg;		/* Address of the beginning of the global variable. */
238	size_t size;			/* Size of the global variable. */
239	size_t size_with_redzone;	/* Size of the variable + size of the redzone. 32 bytes aligned. */
240	const void *name;
241	const void *module_name;	/* Name of the module where the global variable is declared. */
242	unsigned long has_dynamic_init;	/* This is needed for C++. */
243#if KASAN_ABI_VERSION >= 4
244	struct kasan_source_location *location;
245#endif
246#if KASAN_ABI_VERSION >= 5
247	char *odr_indicator;
248#endif
249};
250
251/* Structures for keeping alloc and free meta. */
252
253#ifdef CONFIG_KASAN_GENERIC
254
255/*
256 * Alloc meta contains the allocation-related information about a slab object.
257 * Alloc meta is saved when an object is allocated and is kept until either the
258 * object returns to the slab freelist (leaves quarantine for quarantined
259 * objects or gets freed for the non-quarantined ones) or reallocated via
260 * krealloc or through a mempool.
261 * Alloc meta is stored inside of the object's redzone.
262 * Alloc meta is considered valid whenever it contains non-zero data.
263 */
264struct kasan_alloc_meta {
265	struct kasan_track alloc_track;
266	/* Free track is stored in kasan_free_meta. */
267	depot_stack_handle_t aux_stack[2];
268};
269
270struct qlist_node {
271	struct qlist_node *next;
272};
273
274/*
275 * Free meta is stored either in the object itself or in the redzone after the
276 * object. In the former case, free meta offset is 0. In the latter case, the
277 * offset is between 0 and INT_MAX. INT_MAX marks that free meta is not present.
278 */
279#define KASAN_NO_FREE_META INT_MAX
280
281/*
282 * Free meta contains the freeing-related information about a slab object.
283 * Free meta is only kept for quarantined objects and for mempool objects until
284 * the object gets allocated again.
285 * Free meta is stored within the object's memory.
286 * Free meta is considered valid whenever the value of the shadow byte that
287 * corresponds to the first 8 bytes of the object is KASAN_SLAB_FREE_META.
288 */
289struct kasan_free_meta {
290	struct qlist_node quarantine_link;
291	struct kasan_track free_track;
292};
293
294#endif /* CONFIG_KASAN_GENERIC */
295
296#if defined(CONFIG_KASAN_SW_TAGS) || defined(CONFIG_KASAN_HW_TAGS)
297
298struct kasan_stack_ring_entry {
299	void *ptr;
300	size_t size;
301	struct kasan_track track;
302	bool is_free;
303};
304
305struct kasan_stack_ring {
306	rwlock_t lock;
307	size_t size;
308	atomic64_t pos;
309	struct kasan_stack_ring_entry *entries;
310};
311
312#endif /* CONFIG_KASAN_SW_TAGS || CONFIG_KASAN_HW_TAGS */
313
314#if defined(CONFIG_KASAN_GENERIC) || defined(CONFIG_KASAN_SW_TAGS)
315
316static __always_inline bool addr_in_shadow(const void *addr)
317{
318	return addr >= (void *)KASAN_SHADOW_START &&
319		addr < (void *)KASAN_SHADOW_END;
320}
321
322#ifndef kasan_shadow_to_mem
323static inline const void *kasan_shadow_to_mem(const void *shadow_addr)
324{
325	return (void *)(((unsigned long)shadow_addr - KASAN_SHADOW_OFFSET)
326		<< KASAN_SHADOW_SCALE_SHIFT);
327}
328#endif
329
330#ifndef addr_has_metadata
331static __always_inline bool addr_has_metadata(const void *addr)
332{
333	return (kasan_reset_tag(addr) >=
334		kasan_shadow_to_mem((void *)KASAN_SHADOW_START));
335}
336#endif
337
338/**
339 * kasan_check_range - Check memory region, and report if invalid access.
340 * @addr: the accessed address
341 * @size: the accessed size
342 * @write: true if access is a write access
343 * @ret_ip: return address
344 * @return: true if access was valid, false if invalid
345 */
346bool kasan_check_range(const void *addr, size_t size, bool write,
347				unsigned long ret_ip);
348
349#else /* CONFIG_KASAN_GENERIC || CONFIG_KASAN_SW_TAGS */
350
351static __always_inline bool addr_has_metadata(const void *addr)
352{
353	return (is_vmalloc_addr(addr) || virt_addr_valid(addr));
354}
355
356#endif /* CONFIG_KASAN_GENERIC || CONFIG_KASAN_SW_TAGS */
357
358const void *kasan_find_first_bad_addr(const void *addr, size_t size);
359size_t kasan_get_alloc_size(void *object, struct kmem_cache *cache);
360void kasan_complete_mode_report_info(struct kasan_report_info *info);
361void kasan_metadata_fetch_row(char *buffer, void *row);
362
363#if defined(CONFIG_KASAN_SW_TAGS) || defined(CONFIG_KASAN_HW_TAGS)
364void kasan_print_tags(u8 addr_tag, const void *addr);
365#else
366static inline void kasan_print_tags(u8 addr_tag, const void *addr) { }
367#endif
368
369#if defined(CONFIG_KASAN_STACK)
370void kasan_print_address_stack_frame(const void *addr);
371#else
372static inline void kasan_print_address_stack_frame(const void *addr) { }
373#endif
374
375#ifdef CONFIG_KASAN_GENERIC
376void kasan_print_aux_stacks(struct kmem_cache *cache, const void *object);
377#else
378static inline void kasan_print_aux_stacks(struct kmem_cache *cache, const void *object) { }
379#endif
380
381bool kasan_report(const void *addr, size_t size,
382		bool is_write, unsigned long ip);
383void kasan_report_invalid_free(void *object, unsigned long ip, enum kasan_report_type type);
384
385struct slab *kasan_addr_to_slab(const void *addr);
386
387#ifdef CONFIG_KASAN_GENERIC
388struct kasan_alloc_meta *kasan_get_alloc_meta(struct kmem_cache *cache,
389						const void *object);
390struct kasan_free_meta *kasan_get_free_meta(struct kmem_cache *cache,
391						const void *object);
392void kasan_init_object_meta(struct kmem_cache *cache, const void *object);
393#else
394static inline void kasan_init_object_meta(struct kmem_cache *cache, const void *object) { }
395#endif
396
397depot_stack_handle_t kasan_save_stack(gfp_t flags, depot_flags_t depot_flags);
398void kasan_set_track(struct kasan_track *track, depot_stack_handle_t stack);
399void kasan_save_track(struct kasan_track *track, gfp_t flags);
400void kasan_save_alloc_info(struct kmem_cache *cache, void *object, gfp_t flags);
401
402void kasan_save_free_info(struct kmem_cache *cache, void *object);
403
404#ifdef CONFIG_KASAN_GENERIC
405bool kasan_quarantine_put(struct kmem_cache *cache, void *object);
406void kasan_quarantine_reduce(void);
407void kasan_quarantine_remove_cache(struct kmem_cache *cache);
408#else
409static inline bool kasan_quarantine_put(struct kmem_cache *cache, void *object) { return false; }
410static inline void kasan_quarantine_reduce(void) { }
411static inline void kasan_quarantine_remove_cache(struct kmem_cache *cache) { }
412#endif
413
414#ifndef arch_kasan_set_tag
415static inline const void *arch_kasan_set_tag(const void *addr, u8 tag)
416{
417	return addr;
418}
419#endif
420#ifndef arch_kasan_get_tag
421#define arch_kasan_get_tag(addr)	0
422#endif
423
424#define set_tag(addr, tag)	((void *)arch_kasan_set_tag((addr), (tag)))
425#define get_tag(addr)		arch_kasan_get_tag(addr)
426
427#ifdef CONFIG_KASAN_HW_TAGS
428
429#define hw_enable_tag_checks_sync()		arch_enable_tag_checks_sync()
430#define hw_enable_tag_checks_async()		arch_enable_tag_checks_async()
431#define hw_enable_tag_checks_asymm()		arch_enable_tag_checks_asymm()
432#define hw_suppress_tag_checks_start()		arch_suppress_tag_checks_start()
433#define hw_suppress_tag_checks_stop()		arch_suppress_tag_checks_stop()
434#define hw_force_async_tag_fault()		arch_force_async_tag_fault()
435#define hw_enable_tag_checks_write_only()	arch_enable_tag_checks_write_only()
436#define hw_get_random_tag()			arch_get_random_tag()
437#define hw_get_mem_tag(addr)			arch_get_mem_tag(addr)
438#define hw_set_mem_tag_range(addr, size, tag, init) \
439			arch_set_mem_tag_range((addr), (size), (tag), (init))
440
441void kasan_enable_hw_tags(void);
442
443#else /* CONFIG_KASAN_HW_TAGS */
444
445static inline void kasan_enable_hw_tags(void) { }
446
447#endif /* CONFIG_KASAN_HW_TAGS */
448
449#if defined(CONFIG_KASAN_SW_TAGS) || defined(CONFIG_KASAN_HW_TAGS)
450void __init kasan_init_tags(void);
451#endif /* CONFIG_KASAN_SW_TAGS || CONFIG_KASAN_HW_TAGS */
452
453#if defined(CONFIG_KASAN_HW_TAGS) && IS_ENABLED(CONFIG_KASAN_KUNIT_TEST)
454
455void kasan_force_async_fault(void);
456bool kasan_write_only_enabled(void);
457
458#else /* CONFIG_KASAN_HW_TAGS && CONFIG_KASAN_KUNIT_TEST */
459
460static inline void kasan_force_async_fault(void) { }
461
462static inline bool kasan_write_only_enabled(void)
463{
464	return false;
465}
466
467#endif /* CONFIG_KASAN_HW_TAGS && CONFIG_KASAN_KUNIT_TEST */
468
469#ifdef CONFIG_KASAN_SW_TAGS
470u8 kasan_random_tag(void);
471#elif defined(CONFIG_KASAN_HW_TAGS)
472static inline u8 kasan_random_tag(void) { return hw_get_random_tag(); }
473#else
474static inline u8 kasan_random_tag(void) { return 0; }
475#endif
476
477#ifdef CONFIG_KASAN_HW_TAGS
478
479static inline void kasan_poison(const void *addr, size_t size, u8 value, bool init)
480{
481	if (WARN_ON((unsigned long)addr & KASAN_GRANULE_MASK))
482		return;
483	if (WARN_ON(size & KASAN_GRANULE_MASK))
484		return;
485
486	hw_set_mem_tag_range(kasan_reset_tag(addr), size, value, init);
487}
488
489static inline void kasan_unpoison(const void *addr, size_t size, bool init)
490{
491	u8 tag = get_tag(addr);
492
493	if (WARN_ON((unsigned long)addr & KASAN_GRANULE_MASK))
494		return;
495	size = round_up(size, KASAN_GRANULE_SIZE);
496
497	hw_set_mem_tag_range(kasan_reset_tag(addr), size, tag, init);
498}
499
500static inline bool kasan_byte_accessible(const void *addr)
501{
502	u8 ptr_tag = get_tag(addr);
503	u8 mem_tag = hw_get_mem_tag((void *)addr);
504
505	return ptr_tag == KASAN_TAG_KERNEL || ptr_tag == mem_tag;
506}
507
508#else /* CONFIG_KASAN_HW_TAGS */
509
510/**
511 * kasan_poison - mark the memory range as inaccessible
512 * @addr: range start address, must be aligned to KASAN_GRANULE_SIZE
513 * @size: range size, must be aligned to KASAN_GRANULE_SIZE
514 * @value: value that's written to metadata for the range
515 * @init: whether to initialize the memory range (only for hardware tag-based)
516 */
517void kasan_poison(const void *addr, size_t size, u8 value, bool init);
518
519/**
520 * kasan_unpoison - mark the memory range as accessible
521 * @addr: range start address, must be aligned to KASAN_GRANULE_SIZE
522 * @size: range size, can be unaligned
523 * @init: whether to initialize the memory range (only for hardware tag-based)
524 *
525 * For the tag-based modes, the @size gets aligned to KASAN_GRANULE_SIZE before
526 * marking the range.
527 * For the generic mode, the last granule of the memory range gets partially
528 * unpoisoned based on the @size.
529 */
530void kasan_unpoison(const void *addr, size_t size, bool init);
531
532bool kasan_byte_accessible(const void *addr);
533
534#endif /* CONFIG_KASAN_HW_TAGS */
535
536#ifdef CONFIG_KASAN_GENERIC
537
538/**
539 * kasan_poison_last_granule - mark the last granule of the memory range as
540 * inaccessible
541 * @address: range start address, must be aligned to KASAN_GRANULE_SIZE
542 * @size: range size
543 *
544 * This function is only available for the generic mode, as it's the only mode
545 * that has partially poisoned memory granules.
546 */
547void kasan_poison_last_granule(const void *address, size_t size);
548
549#else /* CONFIG_KASAN_GENERIC */
550
551static inline void kasan_poison_last_granule(const void *address, size_t size) { }
552
553#endif /* CONFIG_KASAN_GENERIC */
554
555#ifndef kasan_arch_is_ready
556static inline bool kasan_arch_is_ready(void)	{ return true; }
557#elif !defined(CONFIG_KASAN_GENERIC) || !defined(CONFIG_KASAN_OUTLINE)
558#error kasan_arch_is_ready only works in KASAN generic outline mode!
559#endif
560
561#if IS_ENABLED(CONFIG_KASAN_KUNIT_TEST)
562
563void kasan_kunit_test_suite_start(void);
564void kasan_kunit_test_suite_end(void);
565
566#ifdef CONFIG_RUST
567char kasan_test_rust_uaf(void);
568#else
569static inline char kasan_test_rust_uaf(void) { return '\0'; }
570#endif
571
572#else /* CONFIG_KASAN_KUNIT_TEST */
573
574static inline void kasan_kunit_test_suite_start(void) { }
575static inline void kasan_kunit_test_suite_end(void) { }
576
577#endif /* CONFIG_KASAN_KUNIT_TEST */
578
579#if IS_ENABLED(CONFIG_KASAN_KUNIT_TEST)
580
581bool kasan_save_enable_multi_shot(void);
582void kasan_restore_multi_shot(bool enabled);
583
584#endif
585
586/*
587 * Exported functions for interfaces called from assembly or from generated
588 * code. Declared here to avoid warnings about missing declarations.
589 */
590
591void __asan_register_globals(void *globals, ssize_t size);
592void __asan_unregister_globals(void *globals, ssize_t size);
593void __asan_handle_no_return(void);
594void __asan_alloca_poison(void *, ssize_t size);
595void __asan_allocas_unpoison(void *stack_top, ssize_t stack_bottom);
596
597void __asan_load1(void *);
598void __asan_store1(void *);
599void __asan_load2(void *);
600void __asan_store2(void *);
601void __asan_load4(void *);
602void __asan_store4(void *);
603void __asan_load8(void *);
604void __asan_store8(void *);
605void __asan_load16(void *);
606void __asan_store16(void *);
607void __asan_loadN(void *, ssize_t size);
608void __asan_storeN(void *, ssize_t size);
609
610void __asan_load1_noabort(void *);
611void __asan_store1_noabort(void *);
612void __asan_load2_noabort(void *);
613void __asan_store2_noabort(void *);
614void __asan_load4_noabort(void *);
615void __asan_store4_noabort(void *);
616void __asan_load8_noabort(void *);
617void __asan_store8_noabort(void *);
618void __asan_load16_noabort(void *);
619void __asan_store16_noabort(void *);
620void __asan_loadN_noabort(void *, ssize_t size);
621void __asan_storeN_noabort(void *, ssize_t size);
622
623void __asan_report_load1_noabort(void *);
624void __asan_report_store1_noabort(void *);
625void __asan_report_load2_noabort(void *);
626void __asan_report_store2_noabort(void *);
627void __asan_report_load4_noabort(void *);
628void __asan_report_store4_noabort(void *);
629void __asan_report_load8_noabort(void *);
630void __asan_report_store8_noabort(void *);
631void __asan_report_load16_noabort(void *);
632void __asan_report_store16_noabort(void *);
633void __asan_report_load_n_noabort(void *, ssize_t size);
634void __asan_report_store_n_noabort(void *, ssize_t size);
635
636void __asan_set_shadow_00(const void *addr, ssize_t size);
637void __asan_set_shadow_f1(const void *addr, ssize_t size);
638void __asan_set_shadow_f2(const void *addr, ssize_t size);
639void __asan_set_shadow_f3(const void *addr, ssize_t size);
640void __asan_set_shadow_f5(const void *addr, ssize_t size);
641void __asan_set_shadow_f8(const void *addr, ssize_t size);
642
643void *__asan_memset(void *addr, int c, ssize_t len);
644void *__asan_memmove(void *dest, const void *src, ssize_t len);
645void *__asan_memcpy(void *dest, const void *src, ssize_t len);
646
647void __hwasan_load1_noabort(void *);
648void __hwasan_store1_noabort(void *);
649void __hwasan_load2_noabort(void *);
650void __hwasan_store2_noabort(void *);
651void __hwasan_load4_noabort(void *);
652void __hwasan_store4_noabort(void *);
653void __hwasan_load8_noabort(void *);
654void __hwasan_store8_noabort(void *);
655void __hwasan_load16_noabort(void *);
656void __hwasan_store16_noabort(void *);
657void __hwasan_loadN_noabort(void *, ssize_t size);
658void __hwasan_storeN_noabort(void *, ssize_t size);
659
660void __hwasan_tag_memory(void *, u8 tag, ssize_t size);
661
662void *__hwasan_memset(void *addr, int c, ssize_t len);
663void *__hwasan_memmove(void *dest, const void *src, ssize_t len);
664void *__hwasan_memcpy(void *dest, const void *src, ssize_t len);
665
666void kasan_tag_mismatch(void *addr, unsigned long access_info,
667			unsigned long ret_ip);
668
669#endif /* __MM_KASAN_KASAN_H */