1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __MM_KASAN_KASAN_H
3 #define __MM_KASAN_KASAN_H
4 
5 #include <linux/kasan.h>
6 #include <linux/kasan-tags.h>
7 #include <linux/kfence.h>
8 #include <linux/stackdepot.h>
9 
10 #ifdef CONFIG_KASAN_HW_TAGS
11 
12 #include <linux/static_key.h>
13 #include "../slab.h"
14 
15 DECLARE_STATIC_KEY_TRUE(kasan_flag_vmalloc);
16 DECLARE_STATIC_KEY_TRUE(kasan_flag_stacktrace);
17 
18 enum kasan_mode {
19 	KASAN_MODE_SYNC,
20 	KASAN_MODE_ASYNC,
21 	KASAN_MODE_ASYMM,
22 };
23 
24 extern enum kasan_mode kasan_mode __ro_after_init;
25 
kasan_vmalloc_enabled(void)26 static inline bool kasan_vmalloc_enabled(void)
27 {
28 	return static_branch_likely(&kasan_flag_vmalloc);
29 }
30 
kasan_stack_collection_enabled(void)31 static inline bool kasan_stack_collection_enabled(void)
32 {
33 	return static_branch_unlikely(&kasan_flag_stacktrace);
34 }
35 
kasan_async_fault_possible(void)36 static inline bool kasan_async_fault_possible(void)
37 {
38 	return kasan_mode == KASAN_MODE_ASYNC || kasan_mode == KASAN_MODE_ASYMM;
39 }
40 
kasan_sync_fault_possible(void)41 static inline bool kasan_sync_fault_possible(void)
42 {
43 	return kasan_mode == KASAN_MODE_SYNC || kasan_mode == KASAN_MODE_ASYMM;
44 }
45 
46 #else
47 
kasan_stack_collection_enabled(void)48 static inline bool kasan_stack_collection_enabled(void)
49 {
50 	return true;
51 }
52 
kasan_async_fault_possible(void)53 static inline bool kasan_async_fault_possible(void)
54 {
55 	return false;
56 }
57 
kasan_sync_fault_possible(void)58 static inline bool kasan_sync_fault_possible(void)
59 {
60 	return true;
61 }
62 
63 #endif
64 
65 #if defined(CONFIG_KASAN_GENERIC) || defined(CONFIG_KASAN_SW_TAGS)
66 #define KASAN_GRANULE_SIZE	(1UL << KASAN_SHADOW_SCALE_SHIFT)
67 #else
68 #include <asm/mte-kasan.h>
69 #define KASAN_GRANULE_SIZE	MTE_GRANULE_SIZE
70 #endif
71 
72 #define KASAN_GRANULE_MASK	(KASAN_GRANULE_SIZE - 1)
73 
74 #define KASAN_MEMORY_PER_SHADOW_PAGE	(KASAN_GRANULE_SIZE << PAGE_SHIFT)
75 
76 #ifdef CONFIG_KASAN_GENERIC
77 #define KASAN_PAGE_FREE		0xFF  /* freed page */
78 #define KASAN_PAGE_REDZONE	0xFE  /* redzone for kmalloc_large allocation */
79 #define KASAN_SLAB_REDZONE	0xFC  /* redzone for slab object */
80 #define KASAN_SLAB_FREE		0xFB  /* freed slab object */
81 #define KASAN_VMALLOC_INVALID	0xF8  /* inaccessible space in vmap area */
82 #else
83 #define KASAN_PAGE_FREE		KASAN_TAG_INVALID
84 #define KASAN_PAGE_REDZONE	KASAN_TAG_INVALID
85 #define KASAN_SLAB_REDZONE	KASAN_TAG_INVALID
86 #define KASAN_SLAB_FREE		KASAN_TAG_INVALID
87 #define KASAN_VMALLOC_INVALID	KASAN_TAG_INVALID /* only used for SW_TAGS */
88 #endif
89 
90 #ifdef CONFIG_KASAN_GENERIC
91 
92 #define KASAN_SLAB_FREETRACK	0xFA  /* freed slab object with free track */
93 #define KASAN_GLOBAL_REDZONE	0xF9  /* redzone for global variable */
94 
95 /* Stack redzone shadow values. Compiler ABI, do not change. */
96 #define KASAN_STACK_LEFT	0xF1
97 #define KASAN_STACK_MID		0xF2
98 #define KASAN_STACK_RIGHT	0xF3
99 #define KASAN_STACK_PARTIAL	0xF4
100 
101 /* alloca redzone shadow values. */
102 #define KASAN_ALLOCA_LEFT	0xCA
103 #define KASAN_ALLOCA_RIGHT	0xCB
104 
105 /* alloca redzone size. Compiler ABI, do not change. */
106 #define KASAN_ALLOCA_REDZONE_SIZE	32
107 
108 /* Stack frame marker. Compiler ABI, do not change. */
109 #define KASAN_CURRENT_STACK_FRAME_MAGIC 0x41B58AB3
110 
111 /* Dummy value to avoid breaking randconfig/all*config builds. */
112 #ifndef KASAN_ABI_VERSION
113 #define KASAN_ABI_VERSION 1
114 #endif
115 
116 #endif /* CONFIG_KASAN_GENERIC */
117 
118 /* Metadata layout customization. */
119 #define META_BYTES_PER_BLOCK 1
120 #define META_BLOCKS_PER_ROW 16
121 #define META_BYTES_PER_ROW (META_BLOCKS_PER_ROW * META_BYTES_PER_BLOCK)
122 #define META_MEM_BYTES_PER_ROW (META_BYTES_PER_ROW * KASAN_GRANULE_SIZE)
123 #define META_ROWS_AROUND_ADDR 2
124 
125 enum kasan_report_type {
126 	KASAN_REPORT_ACCESS,
127 	KASAN_REPORT_INVALID_FREE,
128 };
129 
130 struct kasan_report_info {
131 	enum kasan_report_type type;
132 	void *access_addr;
133 	void *first_bad_addr;
134 	size_t access_size;
135 	bool is_write;
136 	unsigned long ip;
137 };
138 
139 /* Do not change the struct layout: compiler ABI. */
140 struct kasan_source_location {
141 	const char *filename;
142 	int line_no;
143 	int column_no;
144 };
145 
146 /* Do not change the struct layout: compiler ABI. */
147 struct kasan_global {
148 	const void *beg;		/* Address of the beginning of the global variable. */
149 	size_t size;			/* Size of the global variable. */
150 	size_t size_with_redzone;	/* Size of the variable + size of the redzone. 32 bytes aligned. */
151 	const void *name;
152 	const void *module_name;	/* Name of the module where the global variable is declared. */
153 	unsigned long has_dynamic_init;	/* This is needed for C++. */
154 #if KASAN_ABI_VERSION >= 4
155 	struct kasan_source_location *location;
156 #endif
157 #if KASAN_ABI_VERSION >= 5
158 	char *odr_indicator;
159 #endif
160 };
161 
162 /* Structures for keeping alloc and free tracks. */
163 
164 #define KASAN_STACK_DEPTH 64
165 
166 struct kasan_track {
167 	u32 pid;
168 	depot_stack_handle_t stack;
169 };
170 
171 #if defined(CONFIG_KASAN_TAGS_IDENTIFY) && defined(CONFIG_KASAN_SW_TAGS)
172 #define KASAN_NR_FREE_STACKS 5
173 #else
174 #define KASAN_NR_FREE_STACKS 1
175 #endif
176 
177 struct kasan_alloc_meta {
178 	struct kasan_track alloc_track;
179 	/* Generic mode stores free track in kasan_free_meta. */
180 #ifdef CONFIG_KASAN_GENERIC
181 	depot_stack_handle_t aux_stack[2];
182 #else
183 	struct kasan_track free_track[KASAN_NR_FREE_STACKS];
184 #endif
185 #ifdef CONFIG_KASAN_TAGS_IDENTIFY
186 	u8 free_pointer_tag[KASAN_NR_FREE_STACKS];
187 	u8 free_track_idx;
188 #endif
189 };
190 
191 struct qlist_node {
192 	struct qlist_node *next;
193 };
194 
195 /*
196  * Free meta is stored either in the object itself or in the redzone after the
197  * object. In the former case, free meta offset is 0. In the latter case, the
198  * offset is between 0 and INT_MAX. INT_MAX marks that free meta is not present.
199  */
200 #define KASAN_NO_FREE_META INT_MAX
201 
202 /*
203  * Free meta is only used by Generic mode while the object is in quarantine.
204  * After that, slab allocator stores the freelist pointer in the object.
205  */
206 struct kasan_free_meta {
207 #ifdef CONFIG_KASAN_GENERIC
208 	struct qlist_node quarantine_link;
209 	struct kasan_track free_track;
210 #endif
211 };
212 
213 #if IS_ENABLED(CONFIG_KASAN_KUNIT_TEST)
214 /* Used in KUnit-compatible KASAN tests. */
215 struct kunit_kasan_status {
216 	bool report_found;
217 	bool sync_fault;
218 };
219 #endif
220 
221 struct kasan_alloc_meta *kasan_get_alloc_meta(struct kmem_cache *cache,
222 						const void *object);
223 #ifdef CONFIG_KASAN_GENERIC
224 struct kasan_free_meta *kasan_get_free_meta(struct kmem_cache *cache,
225 						const void *object);
226 #endif
227 
228 #if defined(CONFIG_KASAN_GENERIC) || defined(CONFIG_KASAN_SW_TAGS)
229 
kasan_shadow_to_mem(const void * shadow_addr)230 static inline const void *kasan_shadow_to_mem(const void *shadow_addr)
231 {
232 	return (void *)(((unsigned long)shadow_addr - KASAN_SHADOW_OFFSET)
233 		<< KASAN_SHADOW_SCALE_SHIFT);
234 }
235 
addr_has_metadata(const void * addr)236 static inline bool addr_has_metadata(const void *addr)
237 {
238 	return (kasan_reset_tag(addr) >=
239 		kasan_shadow_to_mem((void *)KASAN_SHADOW_START));
240 }
241 
242 /**
243  * kasan_check_range - Check memory region, and report if invalid access.
244  * @addr: the accessed address
245  * @size: the accessed size
246  * @write: true if access is a write access
247  * @ret_ip: return address
248  * @return: true if access was valid, false if invalid
249  */
250 bool kasan_check_range(unsigned long addr, size_t size, bool write,
251 				unsigned long ret_ip);
252 
253 #else /* CONFIG_KASAN_GENERIC || CONFIG_KASAN_SW_TAGS */
254 
addr_has_metadata(const void * addr)255 static inline bool addr_has_metadata(const void *addr)
256 {
257 	return (is_vmalloc_addr(addr) || virt_addr_valid(addr));
258 }
259 
260 #endif /* CONFIG_KASAN_GENERIC || CONFIG_KASAN_SW_TAGS */
261 
262 #if defined(CONFIG_KASAN_SW_TAGS) || defined(CONFIG_KASAN_HW_TAGS)
263 void kasan_print_tags(u8 addr_tag, const void *addr);
264 #else
kasan_print_tags(u8 addr_tag,const void * addr)265 static inline void kasan_print_tags(u8 addr_tag, const void *addr) { }
266 #endif
267 
268 void *kasan_find_first_bad_addr(void *addr, size_t size);
269 const char *kasan_get_bug_type(struct kasan_report_info *info);
270 void kasan_metadata_fetch_row(char *buffer, void *row);
271 
272 #if defined(CONFIG_KASAN_STACK)
273 void kasan_print_address_stack_frame(const void *addr);
274 #else
kasan_print_address_stack_frame(const void * addr)275 static inline void kasan_print_address_stack_frame(const void *addr) { }
276 #endif
277 
278 bool kasan_report(unsigned long addr, size_t size,
279 		bool is_write, unsigned long ip);
280 void kasan_report_invalid_free(void *object, unsigned long ip);
281 
282 struct page *kasan_addr_to_page(const void *addr);
283 struct slab *kasan_addr_to_slab(const void *addr);
284 
285 depot_stack_handle_t kasan_save_stack(gfp_t flags, bool can_alloc);
286 void kasan_set_track(struct kasan_track *track, gfp_t flags);
287 void kasan_set_free_info(struct kmem_cache *cache, void *object, u8 tag);
288 struct kasan_track *kasan_get_free_track(struct kmem_cache *cache,
289 				void *object, u8 tag);
290 
291 #if defined(CONFIG_KASAN_GENERIC) && \
292 	(defined(CONFIG_SLAB) || defined(CONFIG_SLUB))
293 bool kasan_quarantine_put(struct kmem_cache *cache, void *object);
294 void kasan_quarantine_reduce(void);
295 void kasan_quarantine_remove_cache(struct kmem_cache *cache);
296 #else
kasan_quarantine_put(struct kmem_cache * cache,void * object)297 static inline bool kasan_quarantine_put(struct kmem_cache *cache, void *object) { return false; }
kasan_quarantine_reduce(void)298 static inline void kasan_quarantine_reduce(void) { }
kasan_quarantine_remove_cache(struct kmem_cache * cache)299 static inline void kasan_quarantine_remove_cache(struct kmem_cache *cache) { }
300 #endif
301 
302 #ifndef arch_kasan_set_tag
arch_kasan_set_tag(const void * addr,u8 tag)303 static inline const void *arch_kasan_set_tag(const void *addr, u8 tag)
304 {
305 	return addr;
306 }
307 #endif
308 #ifndef arch_kasan_get_tag
309 #define arch_kasan_get_tag(addr)	0
310 #endif
311 
312 #define set_tag(addr, tag)	((void *)arch_kasan_set_tag((addr), (tag)))
313 #define get_tag(addr)		arch_kasan_get_tag(addr)
314 
315 #ifdef CONFIG_KASAN_HW_TAGS
316 
317 #ifndef arch_enable_tagging_sync
318 #define arch_enable_tagging_sync()
319 #endif
320 #ifndef arch_enable_tagging_async
321 #define arch_enable_tagging_async()
322 #endif
323 #ifndef arch_enable_tagging_asymm
324 #define arch_enable_tagging_asymm()
325 #endif
326 #ifndef arch_force_async_tag_fault
327 #define arch_force_async_tag_fault()
328 #endif
329 #ifndef arch_get_random_tag
330 #define arch_get_random_tag()	(0xFF)
331 #endif
332 #ifndef arch_get_mem_tag
333 #define arch_get_mem_tag(addr)	(0xFF)
334 #endif
335 #ifndef arch_set_mem_tag_range
336 #define arch_set_mem_tag_range(addr, size, tag, init) ((void *)(addr))
337 #endif
338 
339 #define hw_enable_tagging_sync()		arch_enable_tagging_sync()
340 #define hw_enable_tagging_async()		arch_enable_tagging_async()
341 #define hw_enable_tagging_asymm()		arch_enable_tagging_asymm()
342 #define hw_force_async_tag_fault()		arch_force_async_tag_fault()
343 #define hw_get_random_tag()			arch_get_random_tag()
344 #define hw_get_mem_tag(addr)			arch_get_mem_tag(addr)
345 #define hw_set_mem_tag_range(addr, size, tag, init) \
346 			arch_set_mem_tag_range((addr), (size), (tag), (init))
347 
348 void kasan_enable_tagging(void);
349 
350 #else /* CONFIG_KASAN_HW_TAGS */
351 
352 #define hw_enable_tagging_sync()
353 #define hw_enable_tagging_async()
354 #define hw_enable_tagging_asymm()
355 
kasan_enable_tagging(void)356 static inline void kasan_enable_tagging(void) { }
357 
358 #endif /* CONFIG_KASAN_HW_TAGS */
359 
360 #if defined(CONFIG_KASAN_HW_TAGS) && IS_ENABLED(CONFIG_KASAN_KUNIT_TEST)
361 
362 void kasan_force_async_fault(void);
363 
364 #else /* CONFIG_KASAN_HW_TAGS && CONFIG_KASAN_KUNIT_TEST */
365 
kasan_force_async_fault(void)366 static inline void kasan_force_async_fault(void) { }
367 
368 #endif /* CONFIG_KASAN_HW_TAGS && CONFIG_KASAN_KUNIT_TEST */
369 
370 #ifdef CONFIG_KASAN_SW_TAGS
371 u8 kasan_random_tag(void);
372 #elif defined(CONFIG_KASAN_HW_TAGS)
kasan_random_tag(void)373 static inline u8 kasan_random_tag(void) { return hw_get_random_tag(); }
374 #else
kasan_random_tag(void)375 static inline u8 kasan_random_tag(void) { return 0; }
376 #endif
377 
378 #ifdef CONFIG_KASAN_HW_TAGS
379 
kasan_poison(const void * addr,size_t size,u8 value,bool init)380 static inline void kasan_poison(const void *addr, size_t size, u8 value, bool init)
381 {
382 	addr = kasan_reset_tag(addr);
383 
384 	/* Skip KFENCE memory if called explicitly outside of sl*b. */
385 	if (is_kfence_address(addr))
386 		return;
387 
388 	if (WARN_ON((unsigned long)addr & KASAN_GRANULE_MASK))
389 		return;
390 	if (WARN_ON(size & KASAN_GRANULE_MASK))
391 		return;
392 
393 	hw_set_mem_tag_range((void *)addr, size, value, init);
394 }
395 
kasan_unpoison(const void * addr,size_t size,bool init)396 static inline void kasan_unpoison(const void *addr, size_t size, bool init)
397 {
398 	u8 tag = get_tag(addr);
399 
400 	addr = kasan_reset_tag(addr);
401 
402 	/* Skip KFENCE memory if called explicitly outside of sl*b. */
403 	if (is_kfence_address(addr))
404 		return;
405 
406 	if (WARN_ON((unsigned long)addr & KASAN_GRANULE_MASK))
407 		return;
408 	/*
409 	 * Explicitly initialize the memory with the precise object size to
410 	 * avoid overwriting the slab redzone. This disables initialization in
411 	 * the arch code and may thus lead to performance penalty. This penalty
412 	 * does not affect production builds, as slab redzones are not enabled
413 	 * there.
414 	 */
415 	if (__slub_debug_enabled() &&
416 	    init && ((unsigned long)size & KASAN_GRANULE_MASK)) {
417 		init = false;
418 		memzero_explicit((void *)addr, size);
419 	}
420 	size = round_up(size, KASAN_GRANULE_SIZE);
421 
422 	hw_set_mem_tag_range((void *)addr, size, tag, init);
423 }
424 
kasan_byte_accessible(const void * addr)425 static inline bool kasan_byte_accessible(const void *addr)
426 {
427 	u8 ptr_tag = get_tag(addr);
428 	u8 mem_tag = hw_get_mem_tag((void *)addr);
429 
430 	return ptr_tag == KASAN_TAG_KERNEL || ptr_tag == mem_tag;
431 }
432 
433 #else /* CONFIG_KASAN_HW_TAGS */
434 
435 /**
436  * kasan_poison - mark the memory range as inaccessible
437  * @addr - range start address, must be aligned to KASAN_GRANULE_SIZE
438  * @size - range size, must be aligned to KASAN_GRANULE_SIZE
439  * @value - value that's written to metadata for the range
440  * @init - whether to initialize the memory range (only for hardware tag-based)
441  *
442  * The size gets aligned to KASAN_GRANULE_SIZE before marking the range.
443  */
444 void kasan_poison(const void *addr, size_t size, u8 value, bool init);
445 
446 /**
447  * kasan_unpoison - mark the memory range as accessible
448  * @addr - range start address, must be aligned to KASAN_GRANULE_SIZE
449  * @size - range size, can be unaligned
450  * @init - whether to initialize the memory range (only for hardware tag-based)
451  *
452  * For the tag-based modes, the @size gets aligned to KASAN_GRANULE_SIZE before
453  * marking the range.
454  * For the generic mode, the last granule of the memory range gets partially
455  * unpoisoned based on the @size.
456  */
457 void kasan_unpoison(const void *addr, size_t size, bool init);
458 
459 bool kasan_byte_accessible(const void *addr);
460 
461 #endif /* CONFIG_KASAN_HW_TAGS */
462 
463 #ifdef CONFIG_KASAN_GENERIC
464 
465 /**
466  * kasan_poison_last_granule - mark the last granule of the memory range as
467  * inaccessible
468  * @addr - range start address, must be aligned to KASAN_GRANULE_SIZE
469  * @size - range size
470  *
471  * This function is only available for the generic mode, as it's the only mode
472  * that has partially poisoned memory granules.
473  */
474 void kasan_poison_last_granule(const void *address, size_t size);
475 
476 #else /* CONFIG_KASAN_GENERIC */
477 
kasan_poison_last_granule(const void * address,size_t size)478 static inline void kasan_poison_last_granule(const void *address, size_t size) { }
479 
480 #endif /* CONFIG_KASAN_GENERIC */
481 
482 #ifndef kasan_arch_is_ready
kasan_arch_is_ready(void)483 static inline bool kasan_arch_is_ready(void)	{ return true; }
484 #elif !defined(CONFIG_KASAN_GENERIC) || !defined(CONFIG_KASAN_OUTLINE)
485 #error kasan_arch_is_ready only works in KASAN generic outline mode!
486 #endif
487 
488 #if IS_ENABLED(CONFIG_KASAN_KUNIT_TEST) || IS_ENABLED(CONFIG_KASAN_MODULE_TEST)
489 
490 bool kasan_save_enable_multi_shot(void);
491 void kasan_restore_multi_shot(bool enabled);
492 
493 #endif
494 
495 /*
496  * Exported functions for interfaces called from assembly or from generated
497  * code. Declared here to avoid warnings about missing declarations.
498  */
499 
500 asmlinkage void kasan_unpoison_task_stack_below(const void *watermark);
501 void __asan_register_globals(struct kasan_global *globals, size_t size);
502 void __asan_unregister_globals(struct kasan_global *globals, size_t size);
503 void __asan_handle_no_return(void);
504 void __asan_alloca_poison(unsigned long addr, size_t size);
505 void __asan_allocas_unpoison(const void *stack_top, const void *stack_bottom);
506 
507 void __asan_load1(unsigned long addr);
508 void __asan_store1(unsigned long addr);
509 void __asan_load2(unsigned long addr);
510 void __asan_store2(unsigned long addr);
511 void __asan_load4(unsigned long addr);
512 void __asan_store4(unsigned long addr);
513 void __asan_load8(unsigned long addr);
514 void __asan_store8(unsigned long addr);
515 void __asan_load16(unsigned long addr);
516 void __asan_store16(unsigned long addr);
517 void __asan_loadN(unsigned long addr, size_t size);
518 void __asan_storeN(unsigned long addr, size_t size);
519 
520 void __asan_load1_noabort(unsigned long addr);
521 void __asan_store1_noabort(unsigned long addr);
522 void __asan_load2_noabort(unsigned long addr);
523 void __asan_store2_noabort(unsigned long addr);
524 void __asan_load4_noabort(unsigned long addr);
525 void __asan_store4_noabort(unsigned long addr);
526 void __asan_load8_noabort(unsigned long addr);
527 void __asan_store8_noabort(unsigned long addr);
528 void __asan_load16_noabort(unsigned long addr);
529 void __asan_store16_noabort(unsigned long addr);
530 void __asan_loadN_noabort(unsigned long addr, size_t size);
531 void __asan_storeN_noabort(unsigned long addr, size_t size);
532 
533 void __asan_report_load1_noabort(unsigned long addr);
534 void __asan_report_store1_noabort(unsigned long addr);
535 void __asan_report_load2_noabort(unsigned long addr);
536 void __asan_report_store2_noabort(unsigned long addr);
537 void __asan_report_load4_noabort(unsigned long addr);
538 void __asan_report_store4_noabort(unsigned long addr);
539 void __asan_report_load8_noabort(unsigned long addr);
540 void __asan_report_store8_noabort(unsigned long addr);
541 void __asan_report_load16_noabort(unsigned long addr);
542 void __asan_report_store16_noabort(unsigned long addr);
543 void __asan_report_load_n_noabort(unsigned long addr, size_t size);
544 void __asan_report_store_n_noabort(unsigned long addr, size_t size);
545 
546 void __asan_set_shadow_00(const void *addr, size_t size);
547 void __asan_set_shadow_f1(const void *addr, size_t size);
548 void __asan_set_shadow_f2(const void *addr, size_t size);
549 void __asan_set_shadow_f3(const void *addr, size_t size);
550 void __asan_set_shadow_f5(const void *addr, size_t size);
551 void __asan_set_shadow_f8(const void *addr, size_t size);
552 
553 void __hwasan_load1_noabort(unsigned long addr);
554 void __hwasan_store1_noabort(unsigned long addr);
555 void __hwasan_load2_noabort(unsigned long addr);
556 void __hwasan_store2_noabort(unsigned long addr);
557 void __hwasan_load4_noabort(unsigned long addr);
558 void __hwasan_store4_noabort(unsigned long addr);
559 void __hwasan_load8_noabort(unsigned long addr);
560 void __hwasan_store8_noabort(unsigned long addr);
561 void __hwasan_load16_noabort(unsigned long addr);
562 void __hwasan_store16_noabort(unsigned long addr);
563 void __hwasan_loadN_noabort(unsigned long addr, size_t size);
564 void __hwasan_storeN_noabort(unsigned long addr, size_t size);
565 
566 void __hwasan_tag_memory(unsigned long addr, u8 tag, unsigned long size);
567 
568 #endif /* __MM_KASAN_KASAN_H */
569