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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 /* Used in KUnit-compatible KASAN tests. */
12 struct kunit_kasan_status {
13 	bool report_found;
14 	bool sync_fault;
15 };
16 
17 #if defined(CONFIG_KASAN_SW_TAGS) || defined(CONFIG_KASAN_HW_TAGS)
18 
19 #include <linux/static_key.h>
20 
21 DECLARE_STATIC_KEY_TRUE(kasan_flag_stacktrace);
22 
kasan_stack_collection_enabled(void)23 static inline bool kasan_stack_collection_enabled(void)
24 {
25 	return static_branch_unlikely(&kasan_flag_stacktrace);
26 }
27 
28 #else /* CONFIG_KASAN_SW_TAGS || CONFIG_KASAN_HW_TAGS */
29 
kasan_stack_collection_enabled(void)30 static inline bool kasan_stack_collection_enabled(void)
31 {
32 	return true;
33 }
34 
35 #endif /* CONFIG_KASAN_SW_TAGS || CONFIG_KASAN_HW_TAGS */
36 
37 #ifdef CONFIG_KASAN_HW_TAGS
38 
39 #include "../slab.h"
40 
41 DECLARE_STATIC_KEY_TRUE(kasan_flag_vmalloc);
42 
43 enum kasan_mode {
44 	KASAN_MODE_SYNC,
45 	KASAN_MODE_ASYNC,
46 	KASAN_MODE_ASYMM,
47 };
48 
49 extern enum kasan_mode kasan_mode __ro_after_init;
50 
51 extern unsigned long kasan_page_alloc_sample;
52 extern unsigned int kasan_page_alloc_sample_order;
53 DECLARE_PER_CPU(long, kasan_page_alloc_skip);
54 
kasan_vmalloc_enabled(void)55 static inline bool kasan_vmalloc_enabled(void)
56 {
57 	return static_branch_likely(&kasan_flag_vmalloc);
58 }
59 
kasan_async_fault_possible(void)60 static inline bool kasan_async_fault_possible(void)
61 {
62 	return kasan_mode == KASAN_MODE_ASYNC || kasan_mode == KASAN_MODE_ASYMM;
63 }
64 
kasan_sync_fault_possible(void)65 static inline bool kasan_sync_fault_possible(void)
66 {
67 	return kasan_mode == KASAN_MODE_SYNC || kasan_mode == KASAN_MODE_ASYMM;
68 }
69 
kasan_sample_page_alloc(unsigned int order)70 static inline bool kasan_sample_page_alloc(unsigned int order)
71 {
72 	/* Fast-path for when sampling is disabled. */
73 	if (kasan_page_alloc_sample == 1)
74 		return true;
75 
76 	if (order < kasan_page_alloc_sample_order)
77 		return true;
78 
79 	if (this_cpu_dec_return(kasan_page_alloc_skip) < 0) {
80 		this_cpu_write(kasan_page_alloc_skip,
81 			       kasan_page_alloc_sample - 1);
82 		return true;
83 	}
84 
85 	return false;
86 }
87 
88 #else /* CONFIG_KASAN_HW_TAGS */
89 
kasan_async_fault_possible(void)90 static inline bool kasan_async_fault_possible(void)
91 {
92 	return false;
93 }
94 
kasan_sync_fault_possible(void)95 static inline bool kasan_sync_fault_possible(void)
96 {
97 	return true;
98 }
99 
kasan_sample_page_alloc(unsigned int order)100 static 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 /* Generic KASAN uses per-object metadata to store stack traces. */
kasan_requires_meta(void)110 static inline bool kasan_requires_meta(void)
111 {
112 	/*
113 	 * Technically, Generic KASAN always collects stack traces right now.
114 	 * However, let's use kasan_stack_collection_enabled() in case the
115 	 * kasan.stacktrace command-line argument is changed to affect
116 	 * Generic KASAN.
117 	 */
118 	return kasan_stack_collection_enabled();
119 }
120 
121 #else /* CONFIG_KASAN_GENERIC */
122 
123 /* Tag-based KASAN modes do not use per-object metadata. */
kasan_requires_meta(void)124 static 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_FREETRACK	0xFA  /* freed slab object with free track */
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 
193 struct kasan_track {
194 	u32 pid;
195 	depot_stack_handle_t stack;
196 };
197 
198 enum kasan_report_type {
199 	KASAN_REPORT_ACCESS,
200 	KASAN_REPORT_INVALID_FREE,
201 	KASAN_REPORT_DOUBLE_FREE,
202 };
203 
204 struct kasan_report_info {
205 	/* Filled in by kasan_report_*(). */
206 	enum kasan_report_type type;
207 	void *access_addr;
208 	size_t access_size;
209 	bool is_write;
210 	unsigned long ip;
211 
212 	/* Filled in by the common reporting code. */
213 	void *first_bad_addr;
214 	struct kmem_cache *cache;
215 	void *object;
216 
217 	/* Filled in by the mode-specific reporting code. */
218 	const char *bug_type;
219 	struct kasan_track alloc_track;
220 	struct kasan_track free_track;
221 };
222 
223 /* Do not change the struct layout: compiler ABI. */
224 struct kasan_source_location {
225 	const char *filename;
226 	int line_no;
227 	int column_no;
228 };
229 
230 /* Do not change the struct layout: compiler ABI. */
231 struct kasan_global {
232 	const void *beg;		/* Address of the beginning of the global variable. */
233 	size_t size;			/* Size of the global variable. */
234 	size_t size_with_redzone;	/* Size of the variable + size of the redzone. 32 bytes aligned. */
235 	const void *name;
236 	const void *module_name;	/* Name of the module where the global variable is declared. */
237 	unsigned long has_dynamic_init;	/* This is needed for C++. */
238 #if KASAN_ABI_VERSION >= 4
239 	struct kasan_source_location *location;
240 #endif
241 #if KASAN_ABI_VERSION >= 5
242 	char *odr_indicator;
243 #endif
244 };
245 
246 /* Structures for keeping alloc and free meta. */
247 
248 #ifdef CONFIG_KASAN_GENERIC
249 
250 struct kasan_alloc_meta {
251 	struct kasan_track alloc_track;
252 	/* Free track is stored in kasan_free_meta. */
253 	depot_stack_handle_t aux_stack[2];
254 };
255 
256 struct qlist_node {
257 	struct qlist_node *next;
258 };
259 
260 /*
261  * Free meta is stored either in the object itself or in the redzone after the
262  * object. In the former case, free meta offset is 0. In the latter case, the
263  * offset is between 0 and INT_MAX. INT_MAX marks that free meta is not present.
264  */
265 #define KASAN_NO_FREE_META INT_MAX
266 
267 /*
268  * Free meta is only used by Generic mode while the object is in quarantine.
269  * After that, slab allocator stores the freelist pointer in the object.
270  */
271 struct kasan_free_meta {
272 	struct qlist_node quarantine_link;
273 	struct kasan_track free_track;
274 };
275 
276 #endif /* CONFIG_KASAN_GENERIC */
277 
278 #if defined(CONFIG_KASAN_SW_TAGS) || defined(CONFIG_KASAN_HW_TAGS)
279 
280 struct kasan_stack_ring_entry {
281 	void *ptr;
282 	size_t size;
283 	u32 pid;
284 	depot_stack_handle_t stack;
285 	bool is_free;
286 };
287 
288 struct kasan_stack_ring {
289 	rwlock_t lock;
290 	size_t size;
291 	atomic64_t pos;
292 	struct kasan_stack_ring_entry *entries;
293 };
294 
295 #endif /* CONFIG_KASAN_SW_TAGS || CONFIG_KASAN_HW_TAGS */
296 
297 #if defined(CONFIG_KASAN_GENERIC) || defined(CONFIG_KASAN_SW_TAGS)
298 
kasan_shadow_to_mem(const void * shadow_addr)299 static inline const void *kasan_shadow_to_mem(const void *shadow_addr)
300 {
301 	return (void *)(((unsigned long)shadow_addr - KASAN_SHADOW_OFFSET)
302 		<< KASAN_SHADOW_SCALE_SHIFT);
303 }
304 
addr_has_metadata(const void * addr)305 static inline bool addr_has_metadata(const void *addr)
306 {
307 	return (kasan_reset_tag(addr) >=
308 		kasan_shadow_to_mem((void *)KASAN_SHADOW_START));
309 }
310 
311 /**
312  * kasan_check_range - Check memory region, and report if invalid access.
313  * @addr: the accessed address
314  * @size: the accessed size
315  * @write: true if access is a write access
316  * @ret_ip: return address
317  * @return: true if access was valid, false if invalid
318  */
319 bool kasan_check_range(unsigned long addr, size_t size, bool write,
320 				unsigned long ret_ip);
321 
322 #else /* CONFIG_KASAN_GENERIC || CONFIG_KASAN_SW_TAGS */
323 
addr_has_metadata(const void * addr)324 static inline bool addr_has_metadata(const void *addr)
325 {
326 	return (is_vmalloc_addr(addr) || virt_addr_valid(addr));
327 }
328 
329 #endif /* CONFIG_KASAN_GENERIC || CONFIG_KASAN_SW_TAGS */
330 
331 void *kasan_find_first_bad_addr(void *addr, size_t size);
332 void kasan_complete_mode_report_info(struct kasan_report_info *info);
333 void kasan_metadata_fetch_row(char *buffer, void *row);
334 
335 #if defined(CONFIG_KASAN_SW_TAGS) || defined(CONFIG_KASAN_HW_TAGS)
336 void kasan_print_tags(u8 addr_tag, const void *addr);
337 #else
kasan_print_tags(u8 addr_tag,const void * addr)338 static inline void kasan_print_tags(u8 addr_tag, const void *addr) { }
339 #endif
340 
341 #if defined(CONFIG_KASAN_STACK)
342 void kasan_print_address_stack_frame(const void *addr);
343 #else
kasan_print_address_stack_frame(const void * addr)344 static inline void kasan_print_address_stack_frame(const void *addr) { }
345 #endif
346 
347 #ifdef CONFIG_KASAN_GENERIC
348 void kasan_print_aux_stacks(struct kmem_cache *cache, const void *object);
349 #else
kasan_print_aux_stacks(struct kmem_cache * cache,const void * object)350 static inline void kasan_print_aux_stacks(struct kmem_cache *cache, const void *object) { }
351 #endif
352 
353 bool kasan_report(unsigned long addr, size_t size,
354 		bool is_write, unsigned long ip);
355 void kasan_report_invalid_free(void *object, unsigned long ip, enum kasan_report_type type);
356 
357 struct page *kasan_addr_to_page(const void *addr);
358 
359 #ifdef CONFIG_KASAN_GENERIC
360 void kasan_init_cache_meta(struct kmem_cache *cache, unsigned int *size);
361 void kasan_init_object_meta(struct kmem_cache *cache, const void *object);
362 struct kasan_alloc_meta *kasan_get_alloc_meta(struct kmem_cache *cache,
363 						const void *object);
364 struct kasan_free_meta *kasan_get_free_meta(struct kmem_cache *cache,
365 						const void *object);
366 #else
kasan_init_cache_meta(struct kmem_cache * cache,unsigned int * size)367 static inline void kasan_init_cache_meta(struct kmem_cache *cache, unsigned int *size) { }
kasan_init_object_meta(struct kmem_cache * cache,const void * object)368 static inline void kasan_init_object_meta(struct kmem_cache *cache, const void *object) { }
369 #endif
370 
371 depot_stack_handle_t kasan_save_stack(gfp_t flags, bool can_alloc);
372 void kasan_set_track(struct kasan_track *track, gfp_t flags);
373 void kasan_save_alloc_info(struct kmem_cache *cache, void *object, gfp_t flags);
374 void kasan_save_free_info(struct kmem_cache *cache, void *object);
375 
376 #if defined(CONFIG_KASAN_GENERIC) && \
377 	(defined(CONFIG_SLAB) || defined(CONFIG_SLUB))
378 bool kasan_quarantine_put(struct kmem_cache *cache, void *object);
379 void kasan_quarantine_reduce(void);
380 void kasan_quarantine_remove_cache(struct kmem_cache *cache);
381 #else
kasan_quarantine_put(struct kmem_cache * cache,void * object)382 static inline bool kasan_quarantine_put(struct kmem_cache *cache, void *object) { return false; }
kasan_quarantine_reduce(void)383 static inline void kasan_quarantine_reduce(void) { }
kasan_quarantine_remove_cache(struct kmem_cache * cache)384 static inline void kasan_quarantine_remove_cache(struct kmem_cache *cache) { }
385 #endif
386 
387 #ifndef arch_kasan_set_tag
arch_kasan_set_tag(const void * addr,u8 tag)388 static inline const void *arch_kasan_set_tag(const void *addr, u8 tag)
389 {
390 	return addr;
391 }
392 #endif
393 #ifndef arch_kasan_get_tag
394 #define arch_kasan_get_tag(addr)	0
395 #endif
396 
397 #define set_tag(addr, tag)	((void *)arch_kasan_set_tag((addr), (tag)))
398 #define get_tag(addr)		arch_kasan_get_tag(addr)
399 
400 #ifdef CONFIG_KASAN_HW_TAGS
401 
402 #define hw_enable_tag_checks_sync()		arch_enable_tag_checks_sync()
403 #define hw_enable_tag_checks_async()		arch_enable_tag_checks_async()
404 #define hw_enable_tag_checks_asymm()		arch_enable_tag_checks_asymm()
405 #define hw_suppress_tag_checks_start()		arch_suppress_tag_checks_start()
406 #define hw_suppress_tag_checks_stop()		arch_suppress_tag_checks_stop()
407 #define hw_force_async_tag_fault()		arch_force_async_tag_fault()
408 #define hw_get_random_tag()			arch_get_random_tag()
409 #define hw_get_mem_tag(addr)			arch_get_mem_tag(addr)
410 #define hw_set_mem_tag_range(addr, size, tag, init) \
411 			arch_set_mem_tag_range((addr), (size), (tag), (init))
412 
413 void kasan_enable_hw_tags(void);
414 
415 #else /* CONFIG_KASAN_HW_TAGS */
416 
kasan_enable_hw_tags(void)417 static inline void kasan_enable_hw_tags(void) { }
418 
419 #endif /* CONFIG_KASAN_HW_TAGS */
420 
421 #if defined(CONFIG_KASAN_SW_TAGS) || defined(CONFIG_KASAN_HW_TAGS)
422 void __init kasan_init_tags(void);
423 #endif /* CONFIG_KASAN_SW_TAGS || CONFIG_KASAN_HW_TAGS */
424 
425 #if defined(CONFIG_KASAN_HW_TAGS) && IS_ENABLED(CONFIG_KASAN_KUNIT_TEST)
426 
427 void kasan_force_async_fault(void);
428 
429 #else /* CONFIG_KASAN_HW_TAGS && CONFIG_KASAN_KUNIT_TEST */
430 
kasan_force_async_fault(void)431 static inline void kasan_force_async_fault(void) { }
432 
433 #endif /* CONFIG_KASAN_HW_TAGS && CONFIG_KASAN_KUNIT_TEST */
434 
435 #ifdef CONFIG_KASAN_SW_TAGS
436 u8 kasan_random_tag(void);
437 #elif defined(CONFIG_KASAN_HW_TAGS)
kasan_random_tag(void)438 static inline u8 kasan_random_tag(void) { return hw_get_random_tag(); }
439 #else
kasan_random_tag(void)440 static inline u8 kasan_random_tag(void) { return 0; }
441 #endif
442 
443 #ifdef CONFIG_KASAN_HW_TAGS
444 
kasan_poison(const void * addr,size_t size,u8 value,bool init)445 static inline void kasan_poison(const void *addr, size_t size, u8 value, bool init)
446 {
447 	addr = kasan_reset_tag(addr);
448 
449 	/* Skip KFENCE memory if called explicitly outside of sl*b. */
450 	if (is_kfence_address(addr))
451 		return;
452 
453 	if (WARN_ON((unsigned long)addr & KASAN_GRANULE_MASK))
454 		return;
455 	if (WARN_ON(size & KASAN_GRANULE_MASK))
456 		return;
457 
458 	hw_set_mem_tag_range((void *)addr, size, value, init);
459 }
460 
kasan_unpoison(const void * addr,size_t size,bool init)461 static inline void kasan_unpoison(const void *addr, size_t size, bool init)
462 {
463 	u8 tag = get_tag(addr);
464 
465 	addr = kasan_reset_tag(addr);
466 
467 	/* Skip KFENCE memory if called explicitly outside of sl*b. */
468 	if (is_kfence_address(addr))
469 		return;
470 
471 	if (WARN_ON((unsigned long)addr & KASAN_GRANULE_MASK))
472 		return;
473 	/*
474 	 * Explicitly initialize the memory with the precise object size to
475 	 * avoid overwriting the slab redzone. This disables initialization in
476 	 * the arch code and may thus lead to performance penalty. This penalty
477 	 * does not affect production builds, as slab redzones are not enabled
478 	 * there.
479 	 */
480 	if (__slub_debug_enabled() &&
481 	    init && ((unsigned long)size & KASAN_GRANULE_MASK)) {
482 		init = false;
483 		memzero_explicit((void *)addr, size);
484 	}
485 	size = round_up(size, KASAN_GRANULE_SIZE);
486 
487 	hw_set_mem_tag_range((void *)addr, size, tag, init);
488 }
489 
kasan_byte_accessible(const void * addr)490 static inline bool kasan_byte_accessible(const void *addr)
491 {
492 	u8 ptr_tag = get_tag(addr);
493 	u8 mem_tag = hw_get_mem_tag((void *)addr);
494 
495 	return ptr_tag == KASAN_TAG_KERNEL || ptr_tag == mem_tag;
496 }
497 
498 #else /* CONFIG_KASAN_HW_TAGS */
499 
500 /**
501  * kasan_poison - mark the memory range as inaccessible
502  * @addr - range start address, must be aligned to KASAN_GRANULE_SIZE
503  * @size - range size, must be aligned to KASAN_GRANULE_SIZE
504  * @value - value that's written to metadata for the range
505  * @init - whether to initialize the memory range (only for hardware tag-based)
506  *
507  * The size gets aligned to KASAN_GRANULE_SIZE before marking the range.
508  */
509 void kasan_poison(const void *addr, size_t size, u8 value, bool init);
510 
511 /**
512  * kasan_unpoison - mark the memory range as accessible
513  * @addr - range start address, must be aligned to KASAN_GRANULE_SIZE
514  * @size - range size, can be unaligned
515  * @init - whether to initialize the memory range (only for hardware tag-based)
516  *
517  * For the tag-based modes, the @size gets aligned to KASAN_GRANULE_SIZE before
518  * marking the range.
519  * For the generic mode, the last granule of the memory range gets partially
520  * unpoisoned based on the @size.
521  */
522 void kasan_unpoison(const void *addr, size_t size, bool init);
523 
524 bool kasan_byte_accessible(const void *addr);
525 
526 #endif /* CONFIG_KASAN_HW_TAGS */
527 
528 #ifdef CONFIG_KASAN_GENERIC
529 
530 /**
531  * kasan_poison_last_granule - mark the last granule of the memory range as
532  * inaccessible
533  * @addr - range start address, must be aligned to KASAN_GRANULE_SIZE
534  * @size - range size
535  *
536  * This function is only available for the generic mode, as it's the only mode
537  * that has partially poisoned memory granules.
538  */
539 void kasan_poison_last_granule(const void *address, size_t size);
540 
541 #else /* CONFIG_KASAN_GENERIC */
542 
kasan_poison_last_granule(const void * address,size_t size)543 static inline void kasan_poison_last_granule(const void *address, size_t size) { }
544 
545 #endif /* CONFIG_KASAN_GENERIC */
546 
547 #ifndef kasan_arch_is_ready
kasan_arch_is_ready(void)548 static inline bool kasan_arch_is_ready(void)	{ return true; }
549 #elif !defined(CONFIG_KASAN_GENERIC) || !defined(CONFIG_KASAN_OUTLINE)
550 #error kasan_arch_is_ready only works in KASAN generic outline mode!
551 #endif
552 
553 #if IS_ENABLED(CONFIG_KASAN_KUNIT_TEST) || IS_ENABLED(CONFIG_KASAN_MODULE_TEST)
554 
555 bool kasan_save_enable_multi_shot(void);
556 void kasan_restore_multi_shot(bool enabled);
557 
558 #endif
559 
560 /*
561  * Exported functions for interfaces called from assembly or from generated
562  * code. Declared here to avoid warnings about missing declarations.
563  */
564 
565 asmlinkage void kasan_unpoison_task_stack_below(const void *watermark);
566 void __asan_register_globals(struct kasan_global *globals, size_t size);
567 void __asan_unregister_globals(struct kasan_global *globals, size_t size);
568 void __asan_handle_no_return(void);
569 void __asan_alloca_poison(unsigned long addr, size_t size);
570 void __asan_allocas_unpoison(const void *stack_top, const void *stack_bottom);
571 
572 void __asan_load1(unsigned long addr);
573 void __asan_store1(unsigned long addr);
574 void __asan_load2(unsigned long addr);
575 void __asan_store2(unsigned long addr);
576 void __asan_load4(unsigned long addr);
577 void __asan_store4(unsigned long addr);
578 void __asan_load8(unsigned long addr);
579 void __asan_store8(unsigned long addr);
580 void __asan_load16(unsigned long addr);
581 void __asan_store16(unsigned long addr);
582 void __asan_loadN(unsigned long addr, size_t size);
583 void __asan_storeN(unsigned long addr, size_t size);
584 
585 void __asan_load1_noabort(unsigned long addr);
586 void __asan_store1_noabort(unsigned long addr);
587 void __asan_load2_noabort(unsigned long addr);
588 void __asan_store2_noabort(unsigned long addr);
589 void __asan_load4_noabort(unsigned long addr);
590 void __asan_store4_noabort(unsigned long addr);
591 void __asan_load8_noabort(unsigned long addr);
592 void __asan_store8_noabort(unsigned long addr);
593 void __asan_load16_noabort(unsigned long addr);
594 void __asan_store16_noabort(unsigned long addr);
595 void __asan_loadN_noabort(unsigned long addr, size_t size);
596 void __asan_storeN_noabort(unsigned long addr, size_t size);
597 
598 void __asan_report_load1_noabort(unsigned long addr);
599 void __asan_report_store1_noabort(unsigned long addr);
600 void __asan_report_load2_noabort(unsigned long addr);
601 void __asan_report_store2_noabort(unsigned long addr);
602 void __asan_report_load4_noabort(unsigned long addr);
603 void __asan_report_store4_noabort(unsigned long addr);
604 void __asan_report_load8_noabort(unsigned long addr);
605 void __asan_report_store8_noabort(unsigned long addr);
606 void __asan_report_load16_noabort(unsigned long addr);
607 void __asan_report_store16_noabort(unsigned long addr);
608 void __asan_report_load_n_noabort(unsigned long addr, size_t size);
609 void __asan_report_store_n_noabort(unsigned long addr, size_t size);
610 
611 void __asan_set_shadow_00(const void *addr, size_t size);
612 void __asan_set_shadow_f1(const void *addr, size_t size);
613 void __asan_set_shadow_f2(const void *addr, size_t size);
614 void __asan_set_shadow_f3(const void *addr, size_t size);
615 void __asan_set_shadow_f5(const void *addr, size_t size);
616 void __asan_set_shadow_f8(const void *addr, size_t size);
617 
618 void __hwasan_load1_noabort(unsigned long addr);
619 void __hwasan_store1_noabort(unsigned long addr);
620 void __hwasan_load2_noabort(unsigned long addr);
621 void __hwasan_store2_noabort(unsigned long addr);
622 void __hwasan_load4_noabort(unsigned long addr);
623 void __hwasan_store4_noabort(unsigned long addr);
624 void __hwasan_load8_noabort(unsigned long addr);
625 void __hwasan_store8_noabort(unsigned long addr);
626 void __hwasan_load16_noabort(unsigned long addr);
627 void __hwasan_store16_noabort(unsigned long addr);
628 void __hwasan_loadN_noabort(unsigned long addr, size_t size);
629 void __hwasan_storeN_noabort(unsigned long addr, size_t size);
630 
631 void __hwasan_tag_memory(unsigned long addr, u8 tag, unsigned long size);
632 
633 #endif /* __MM_KASAN_KASAN_H */
634