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 | |
15 | DECLARE_STATIC_KEY_TRUE(kasan_flag_stacktrace); |
16 | |
17 | static 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 | |
24 | static 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 | |
35 | DECLARE_STATIC_KEY_TRUE(kasan_flag_vmalloc); |
36 | |
37 | enum kasan_mode { |
38 | KASAN_MODE_SYNC, |
39 | KASAN_MODE_ASYNC, |
40 | KASAN_MODE_ASYMM, |
41 | }; |
42 | |
43 | extern enum kasan_mode kasan_mode __ro_after_init; |
44 | |
45 | extern unsigned long kasan_page_alloc_sample; |
46 | extern unsigned int kasan_page_alloc_sample_order; |
47 | DECLARE_PER_CPU(long, kasan_page_alloc_skip); |
48 | |
49 | static inline bool kasan_vmalloc_enabled(void) |
50 | { |
51 | return static_branch_likely(&kasan_flag_vmalloc); |
52 | } |
53 | |
54 | static inline bool kasan_async_fault_possible(void) |
55 | { |
56 | return kasan_mode == KASAN_MODE_ASYNC || kasan_mode == KASAN_MODE_ASYMM; |
57 | } |
58 | |
59 | static inline bool kasan_sync_fault_possible(void) |
60 | { |
61 | return kasan_mode == KASAN_MODE_SYNC || kasan_mode == KASAN_MODE_ASYMM; |
62 | } |
63 | |
64 | static inline bool kasan_sample_page_alloc(unsigned int order) |
65 | { |
66 | /* Fast-path for when sampling is disabled. */ |
67 | if (kasan_page_alloc_sample == 1) |
68 | return true; |
69 | |
70 | if (order < kasan_page_alloc_sample_order) |
71 | return true; |
72 | |
73 | if (this_cpu_dec_return(kasan_page_alloc_skip) < 0) { |
74 | this_cpu_write(kasan_page_alloc_skip, |
75 | kasan_page_alloc_sample - 1); |
76 | return true; |
77 | } |
78 | |
79 | return false; |
80 | } |
81 | |
82 | #else /* CONFIG_KASAN_HW_TAGS */ |
83 | |
84 | static inline bool kasan_async_fault_possible(void) |
85 | { |
86 | return false; |
87 | } |
88 | |
89 | static inline bool kasan_sync_fault_possible(void) |
90 | { |
91 | return true; |
92 | } |
93 | |
94 | static inline bool kasan_sample_page_alloc(unsigned int order) |
95 | { |
96 | return true; |
97 | } |
98 | |
99 | #endif /* CONFIG_KASAN_HW_TAGS */ |
100 | |
101 | #ifdef CONFIG_KASAN_GENERIC |
102 | |
103 | /* Generic KASAN uses per-object metadata to store stack traces. */ |
104 | static inline bool kasan_requires_meta(void) |
105 | { |
106 | /* |
107 | * Technically, Generic KASAN always collects stack traces right now. |
108 | * However, let's use kasan_stack_collection_enabled() in case the |
109 | * kasan.stacktrace command-line argument is changed to affect |
110 | * Generic KASAN. |
111 | */ |
112 | return kasan_stack_collection_enabled(); |
113 | } |
114 | |
115 | #else /* CONFIG_KASAN_GENERIC */ |
116 | |
117 | /* Tag-based KASAN modes do not use per-object metadata. */ |
118 | static inline bool kasan_requires_meta(void) |
119 | { |
120 | return false; |
121 | } |
122 | |
123 | #endif /* CONFIG_KASAN_GENERIC */ |
124 | |
125 | #if defined(CONFIG_KASAN_GENERIC) || defined(CONFIG_KASAN_SW_TAGS) |
126 | #define KASAN_GRANULE_SIZE (1UL << KASAN_SHADOW_SCALE_SHIFT) |
127 | #else |
128 | #include <asm/mte-kasan.h> |
129 | #define KASAN_GRANULE_SIZE MTE_GRANULE_SIZE |
130 | #endif |
131 | |
132 | #define KASAN_GRANULE_MASK (KASAN_GRANULE_SIZE - 1) |
133 | |
134 | #define KASAN_MEMORY_PER_SHADOW_PAGE (KASAN_GRANULE_SIZE << PAGE_SHIFT) |
135 | |
136 | #ifdef CONFIG_KASAN_GENERIC |
137 | #define KASAN_PAGE_FREE 0xFF /* freed page */ |
138 | #define KASAN_PAGE_REDZONE 0xFE /* redzone for kmalloc_large allocation */ |
139 | #define KASAN_SLAB_REDZONE 0xFC /* redzone for slab object */ |
140 | #define KASAN_SLAB_FREE 0xFB /* freed slab object */ |
141 | #define KASAN_VMALLOC_INVALID 0xF8 /* inaccessible space in vmap area */ |
142 | #else |
143 | #define KASAN_PAGE_FREE KASAN_TAG_INVALID |
144 | #define KASAN_PAGE_REDZONE KASAN_TAG_INVALID |
145 | #define KASAN_SLAB_REDZONE KASAN_TAG_INVALID |
146 | #define KASAN_SLAB_FREE KASAN_TAG_INVALID |
147 | #define KASAN_VMALLOC_INVALID KASAN_TAG_INVALID /* only used for SW_TAGS */ |
148 | #endif |
149 | |
150 | #ifdef CONFIG_KASAN_GENERIC |
151 | |
152 | #define KASAN_SLAB_FREETRACK 0xFA /* freed slab object with free track */ |
153 | #define KASAN_GLOBAL_REDZONE 0xF9 /* redzone for global variable */ |
154 | |
155 | /* Stack redzone shadow values. Compiler ABI, do not change. */ |
156 | #define KASAN_STACK_LEFT 0xF1 |
157 | #define KASAN_STACK_MID 0xF2 |
158 | #define KASAN_STACK_RIGHT 0xF3 |
159 | #define KASAN_STACK_PARTIAL 0xF4 |
160 | |
161 | /* alloca redzone shadow values. */ |
162 | #define KASAN_ALLOCA_LEFT 0xCA |
163 | #define KASAN_ALLOCA_RIGHT 0xCB |
164 | |
165 | /* alloca redzone size. Compiler ABI, do not change. */ |
166 | #define KASAN_ALLOCA_REDZONE_SIZE 32 |
167 | |
168 | /* Stack frame marker. Compiler ABI, do not change. */ |
169 | #define KASAN_CURRENT_STACK_FRAME_MAGIC 0x41B58AB3 |
170 | |
171 | /* Dummy value to avoid breaking randconfig/all*config builds. */ |
172 | #ifndef KASAN_ABI_VERSION |
173 | #define KASAN_ABI_VERSION 1 |
174 | #endif |
175 | |
176 | #endif /* CONFIG_KASAN_GENERIC */ |
177 | |
178 | /* Metadata layout customization. */ |
179 | #define META_BYTES_PER_BLOCK 1 |
180 | #define META_BLOCKS_PER_ROW 16 |
181 | #define META_BYTES_PER_ROW (META_BLOCKS_PER_ROW * META_BYTES_PER_BLOCK) |
182 | #define META_MEM_BYTES_PER_ROW (META_BYTES_PER_ROW * KASAN_GRANULE_SIZE) |
183 | #define META_ROWS_AROUND_ADDR 2 |
184 | |
185 | #define KASAN_STACK_DEPTH 64 |
186 | |
187 | struct kasan_track { |
188 | u32 pid; |
189 | depot_stack_handle_t stack; |
190 | }; |
191 | |
192 | enum kasan_report_type { |
193 | KASAN_REPORT_ACCESS, |
194 | KASAN_REPORT_INVALID_FREE, |
195 | KASAN_REPORT_DOUBLE_FREE, |
196 | }; |
197 | |
198 | struct kasan_report_info { |
199 | /* Filled in by kasan_report_*(). */ |
200 | enum kasan_report_type type; |
201 | const void *access_addr; |
202 | size_t access_size; |
203 | bool is_write; |
204 | unsigned long ip; |
205 | |
206 | /* Filled in by the common reporting code. */ |
207 | const void *first_bad_addr; |
208 | struct kmem_cache *cache; |
209 | void *object; |
210 | size_t alloc_size; |
211 | |
212 | /* Filled in by the mode-specific reporting code. */ |
213 | const char *bug_type; |
214 | struct kasan_track alloc_track; |
215 | struct kasan_track free_track; |
216 | }; |
217 | |
218 | /* Do not change the struct layout: compiler ABI. */ |
219 | struct kasan_source_location { |
220 | const char *filename; |
221 | int line_no; |
222 | int column_no; |
223 | }; |
224 | |
225 | /* Do not change the struct layout: compiler ABI. */ |
226 | struct kasan_global { |
227 | const void *beg; /* Address of the beginning of the global variable. */ |
228 | size_t size; /* Size of the global variable. */ |
229 | size_t size_with_redzone; /* Size of the variable + size of the redzone. 32 bytes aligned. */ |
230 | const void *name; |
231 | const void *module_name; /* Name of the module where the global variable is declared. */ |
232 | unsigned long has_dynamic_init; /* This is needed for C++. */ |
233 | #if KASAN_ABI_VERSION >= 4 |
234 | struct kasan_source_location *location; |
235 | #endif |
236 | #if KASAN_ABI_VERSION >= 5 |
237 | char *odr_indicator; |
238 | #endif |
239 | }; |
240 | |
241 | /* Structures for keeping alloc and free meta. */ |
242 | |
243 | #ifdef CONFIG_KASAN_GENERIC |
244 | |
245 | struct kasan_alloc_meta { |
246 | struct kasan_track alloc_track; |
247 | /* Free track is stored in kasan_free_meta. */ |
248 | depot_stack_handle_t aux_stack[2]; |
249 | }; |
250 | |
251 | struct qlist_node { |
252 | struct qlist_node *next; |
253 | }; |
254 | |
255 | /* |
256 | * Free meta is stored either in the object itself or in the redzone after the |
257 | * object. In the former case, free meta offset is 0. In the latter case, the |
258 | * offset is between 0 and INT_MAX. INT_MAX marks that free meta is not present. |
259 | */ |
260 | #define KASAN_NO_FREE_META INT_MAX |
261 | |
262 | /* |
263 | * Free meta is only used by Generic mode while the object is in quarantine. |
264 | * After that, slab allocator stores the freelist pointer in the object. |
265 | */ |
266 | struct kasan_free_meta { |
267 | struct qlist_node quarantine_link; |
268 | struct kasan_track free_track; |
269 | }; |
270 | |
271 | #endif /* CONFIG_KASAN_GENERIC */ |
272 | |
273 | #if defined(CONFIG_KASAN_SW_TAGS) || defined(CONFIG_KASAN_HW_TAGS) |
274 | |
275 | struct kasan_stack_ring_entry { |
276 | void *ptr; |
277 | size_t size; |
278 | u32 pid; |
279 | depot_stack_handle_t stack; |
280 | bool is_free; |
281 | }; |
282 | |
283 | struct kasan_stack_ring { |
284 | rwlock_t lock; |
285 | size_t size; |
286 | atomic64_t pos; |
287 | struct kasan_stack_ring_entry *entries; |
288 | }; |
289 | |
290 | #endif /* CONFIG_KASAN_SW_TAGS || CONFIG_KASAN_HW_TAGS */ |
291 | |
292 | #if defined(CONFIG_KASAN_GENERIC) || defined(CONFIG_KASAN_SW_TAGS) |
293 | |
294 | #ifndef kasan_shadow_to_mem |
295 | static inline const void *kasan_shadow_to_mem(const void *shadow_addr) |
296 | { |
297 | return (void *)(((unsigned long)shadow_addr - KASAN_SHADOW_OFFSET) |
298 | << KASAN_SHADOW_SCALE_SHIFT); |
299 | } |
300 | #endif |
301 | |
302 | #ifndef addr_has_metadata |
303 | static __always_inline bool addr_has_metadata(const void *addr) |
304 | { |
305 | return (kasan_reset_tag(addr) >= |
306 | kasan_shadow_to_mem((void *)KASAN_SHADOW_START)); |
307 | } |
308 | #endif |
309 | |
310 | /** |
311 | * kasan_check_range - Check memory region, and report if invalid access. |
312 | * @addr: the accessed address |
313 | * @size: the accessed size |
314 | * @write: true if access is a write access |
315 | * @ret_ip: return address |
316 | * @return: true if access was valid, false if invalid |
317 | */ |
318 | bool kasan_check_range(const void *addr, size_t size, bool write, |
319 | unsigned long ret_ip); |
320 | |
321 | #else /* CONFIG_KASAN_GENERIC || CONFIG_KASAN_SW_TAGS */ |
322 | |
323 | static __always_inline bool addr_has_metadata(const void *addr) |
324 | { |
325 | return (is_vmalloc_addr(x: addr) || virt_addr_valid(addr)); |
326 | } |
327 | |
328 | #endif /* CONFIG_KASAN_GENERIC || CONFIG_KASAN_SW_TAGS */ |
329 | |
330 | const void *kasan_find_first_bad_addr(const void *addr, size_t size); |
331 | size_t kasan_get_alloc_size(void *object, struct kmem_cache *cache); |
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 |
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 |
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 |
350 | static inline void kasan_print_aux_stacks(struct kmem_cache *cache, const void *object) { } |
351 | #endif |
352 | |
353 | bool kasan_report(const void *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 slab *kasan_addr_to_slab(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 |
367 | static inline void kasan_init_cache_meta(struct kmem_cache *cache, unsigned int *size) { } |
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 |
382 | static inline bool kasan_quarantine_put(struct kmem_cache *cache, void *object) { return false; } |
383 | static inline void kasan_quarantine_reduce(void) { } |
384 | static inline void kasan_quarantine_remove_cache(struct kmem_cache *cache) { } |
385 | #endif |
386 | |
387 | #ifndef arch_kasan_set_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 | |
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 | |
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) |
438 | static inline u8 kasan_random_tag(void) { return hw_get_random_tag(); } |
439 | #else |
440 | static inline u8 kasan_random_tag(void) { return 0; } |
441 | #endif |
442 | |
443 | #ifdef CONFIG_KASAN_HW_TAGS |
444 | |
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 | |
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 | size = round_up(size, KASAN_GRANULE_SIZE); |
474 | |
475 | hw_set_mem_tag_range((void *)addr, size, tag, init); |
476 | } |
477 | |
478 | static inline bool kasan_byte_accessible(const void *addr) |
479 | { |
480 | u8 ptr_tag = get_tag(addr); |
481 | u8 mem_tag = hw_get_mem_tag((void *)addr); |
482 | |
483 | return ptr_tag == KASAN_TAG_KERNEL || ptr_tag == mem_tag; |
484 | } |
485 | |
486 | #else /* CONFIG_KASAN_HW_TAGS */ |
487 | |
488 | /** |
489 | * kasan_poison - mark the memory range as inaccessible |
490 | * @addr - range start address, must be aligned to KASAN_GRANULE_SIZE |
491 | * @size - range size, must be aligned to KASAN_GRANULE_SIZE |
492 | * @value - value that's written to metadata for the range |
493 | * @init - whether to initialize the memory range (only for hardware tag-based) |
494 | * |
495 | * The size gets aligned to KASAN_GRANULE_SIZE before marking the range. |
496 | */ |
497 | void kasan_poison(const void *addr, size_t size, u8 value, bool init); |
498 | |
499 | /** |
500 | * kasan_unpoison - mark the memory range as accessible |
501 | * @addr - range start address, must be aligned to KASAN_GRANULE_SIZE |
502 | * @size - range size, can be unaligned |
503 | * @init - whether to initialize the memory range (only for hardware tag-based) |
504 | * |
505 | * For the tag-based modes, the @size gets aligned to KASAN_GRANULE_SIZE before |
506 | * marking the range. |
507 | * For the generic mode, the last granule of the memory range gets partially |
508 | * unpoisoned based on the @size. |
509 | */ |
510 | void kasan_unpoison(const void *addr, size_t size, bool init); |
511 | |
512 | bool kasan_byte_accessible(const void *addr); |
513 | |
514 | #endif /* CONFIG_KASAN_HW_TAGS */ |
515 | |
516 | #ifdef CONFIG_KASAN_GENERIC |
517 | |
518 | /** |
519 | * kasan_poison_last_granule - mark the last granule of the memory range as |
520 | * inaccessible |
521 | * @addr - range start address, must be aligned to KASAN_GRANULE_SIZE |
522 | * @size - range size |
523 | * |
524 | * This function is only available for the generic mode, as it's the only mode |
525 | * that has partially poisoned memory granules. |
526 | */ |
527 | void kasan_poison_last_granule(const void *address, size_t size); |
528 | |
529 | #else /* CONFIG_KASAN_GENERIC */ |
530 | |
531 | static inline void kasan_poison_last_granule(const void *address, size_t size) { } |
532 | |
533 | #endif /* CONFIG_KASAN_GENERIC */ |
534 | |
535 | #ifndef kasan_arch_is_ready |
536 | static inline bool kasan_arch_is_ready(void) { return true; } |
537 | #elif !defined(CONFIG_KASAN_GENERIC) || !defined(CONFIG_KASAN_OUTLINE) |
538 | #error kasan_arch_is_ready only works in KASAN generic outline mode! |
539 | #endif |
540 | |
541 | #if IS_ENABLED(CONFIG_KASAN_KUNIT_TEST) |
542 | |
543 | void kasan_kunit_test_suite_start(void); |
544 | void kasan_kunit_test_suite_end(void); |
545 | |
546 | #else /* CONFIG_KASAN_KUNIT_TEST */ |
547 | |
548 | static inline void kasan_kunit_test_suite_start(void) { } |
549 | static inline void kasan_kunit_test_suite_end(void) { } |
550 | |
551 | #endif /* CONFIG_KASAN_KUNIT_TEST */ |
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 | void __asan_register_globals(void *globals, ssize_t size); |
566 | void __asan_unregister_globals(void *globals, ssize_t size); |
567 | void __asan_handle_no_return(void); |
568 | void __asan_alloca_poison(void *, ssize_t size); |
569 | void __asan_allocas_unpoison(void *stack_top, ssize_t stack_bottom); |
570 | |
571 | void __asan_load1(void *); |
572 | void __asan_store1(void *); |
573 | void __asan_load2(void *); |
574 | void __asan_store2(void *); |
575 | void __asan_load4(void *); |
576 | void __asan_store4(void *); |
577 | void __asan_load8(void *); |
578 | void __asan_store8(void *); |
579 | void __asan_load16(void *); |
580 | void __asan_store16(void *); |
581 | void __asan_loadN(void *, ssize_t size); |
582 | void __asan_storeN(void *, ssize_t size); |
583 | |
584 | void __asan_load1_noabort(void *); |
585 | void __asan_store1_noabort(void *); |
586 | void __asan_load2_noabort(void *); |
587 | void __asan_store2_noabort(void *); |
588 | void __asan_load4_noabort(void *); |
589 | void __asan_store4_noabort(void *); |
590 | void __asan_load8_noabort(void *); |
591 | void __asan_store8_noabort(void *); |
592 | void __asan_load16_noabort(void *); |
593 | void __asan_store16_noabort(void *); |
594 | void __asan_loadN_noabort(void *, ssize_t size); |
595 | void __asan_storeN_noabort(void *, ssize_t size); |
596 | |
597 | void __asan_report_load1_noabort(void *); |
598 | void __asan_report_store1_noabort(void *); |
599 | void __asan_report_load2_noabort(void *); |
600 | void __asan_report_store2_noabort(void *); |
601 | void __asan_report_load4_noabort(void *); |
602 | void __asan_report_store4_noabort(void *); |
603 | void __asan_report_load8_noabort(void *); |
604 | void __asan_report_store8_noabort(void *); |
605 | void __asan_report_load16_noabort(void *); |
606 | void __asan_report_store16_noabort(void *); |
607 | void __asan_report_load_n_noabort(void *, ssize_t size); |
608 | void __asan_report_store_n_noabort(void *, ssize_t size); |
609 | |
610 | void __asan_set_shadow_00(const void *addr, ssize_t size); |
611 | void __asan_set_shadow_f1(const void *addr, ssize_t size); |
612 | void __asan_set_shadow_f2(const void *addr, ssize_t size); |
613 | void __asan_set_shadow_f3(const void *addr, ssize_t size); |
614 | void __asan_set_shadow_f5(const void *addr, ssize_t size); |
615 | void __asan_set_shadow_f8(const void *addr, ssize_t size); |
616 | |
617 | void *__asan_memset(void *addr, int c, ssize_t len); |
618 | void *__asan_memmove(void *dest, const void *src, ssize_t len); |
619 | void *__asan_memcpy(void *dest, const void *src, ssize_t len); |
620 | |
621 | void __hwasan_load1_noabort(void *); |
622 | void __hwasan_store1_noabort(void *); |
623 | void __hwasan_load2_noabort(void *); |
624 | void __hwasan_store2_noabort(void *); |
625 | void __hwasan_load4_noabort(void *); |
626 | void __hwasan_store4_noabort(void *); |
627 | void __hwasan_load8_noabort(void *); |
628 | void __hwasan_store8_noabort(void *); |
629 | void __hwasan_load16_noabort(void *); |
630 | void __hwasan_store16_noabort(void *); |
631 | void __hwasan_loadN_noabort(void *, ssize_t size); |
632 | void __hwasan_storeN_noabort(void *, ssize_t size); |
633 | |
634 | void __hwasan_tag_memory(void *, u8 tag, ssize_t size); |
635 | |
636 | void *__hwasan_memset(void *addr, int c, ssize_t len); |
637 | void *__hwasan_memmove(void *dest, const void *src, ssize_t len); |
638 | void *__hwasan_memcpy(void *dest, const void *src, ssize_t len); |
639 | |
640 | void kasan_tag_mismatch(void *addr, unsigned long access_info, |
641 | unsigned long ret_ip); |
642 | |
643 | #endif /* __MM_KASAN_KASAN_H */ |
644 | |