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(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 asmlinkage void kasan_unpoison_task_stack_below(const void *watermark); 566 void __asan_register_globals(void *globals, ssize_t size); 567 void __asan_unregister_globals(void *globals, ssize_t size); 568 void __asan_handle_no_return(void); 569 void __asan_alloca_poison(void *, ssize_t size); 570 void __asan_allocas_unpoison(void *stack_top, ssize_t stack_bottom); 571 572 void __asan_load1(void *); 573 void __asan_store1(void *); 574 void __asan_load2(void *); 575 void __asan_store2(void *); 576 void __asan_load4(void *); 577 void __asan_store4(void *); 578 void __asan_load8(void *); 579 void __asan_store8(void *); 580 void __asan_load16(void *); 581 void __asan_store16(void *); 582 void __asan_loadN(void *, ssize_t size); 583 void __asan_storeN(void *, ssize_t size); 584 585 void __asan_load1_noabort(void *); 586 void __asan_store1_noabort(void *); 587 void __asan_load2_noabort(void *); 588 void __asan_store2_noabort(void *); 589 void __asan_load4_noabort(void *); 590 void __asan_store4_noabort(void *); 591 void __asan_load8_noabort(void *); 592 void __asan_store8_noabort(void *); 593 void __asan_load16_noabort(void *); 594 void __asan_store16_noabort(void *); 595 void __asan_loadN_noabort(void *, ssize_t size); 596 void __asan_storeN_noabort(void *, ssize_t size); 597 598 void __asan_report_load1_noabort(void *); 599 void __asan_report_store1_noabort(void *); 600 void __asan_report_load2_noabort(void *); 601 void __asan_report_store2_noabort(void *); 602 void __asan_report_load4_noabort(void *); 603 void __asan_report_store4_noabort(void *); 604 void __asan_report_load8_noabort(void *); 605 void __asan_report_store8_noabort(void *); 606 void __asan_report_load16_noabort(void *); 607 void __asan_report_store16_noabort(void *); 608 void __asan_report_load_n_noabort(void *, ssize_t size); 609 void __asan_report_store_n_noabort(void *, ssize_t size); 610 611 void __asan_set_shadow_00(const void *addr, ssize_t size); 612 void __asan_set_shadow_f1(const void *addr, ssize_t size); 613 void __asan_set_shadow_f2(const void *addr, ssize_t size); 614 void __asan_set_shadow_f3(const void *addr, ssize_t size); 615 void __asan_set_shadow_f5(const void *addr, ssize_t size); 616 void __asan_set_shadow_f8(const void *addr, ssize_t size); 617 618 void *__asan_memset(void *addr, int c, ssize_t len); 619 void *__asan_memmove(void *dest, const void *src, ssize_t len); 620 void *__asan_memcpy(void *dest, const void *src, ssize_t len); 621 622 void __hwasan_load1_noabort(void *); 623 void __hwasan_store1_noabort(void *); 624 void __hwasan_load2_noabort(void *); 625 void __hwasan_store2_noabort(void *); 626 void __hwasan_load4_noabort(void *); 627 void __hwasan_store4_noabort(void *); 628 void __hwasan_load8_noabort(void *); 629 void __hwasan_store8_noabort(void *); 630 void __hwasan_load16_noabort(void *); 631 void __hwasan_store16_noabort(void *); 632 void __hwasan_loadN_noabort(void *, ssize_t size); 633 void __hwasan_storeN_noabort(void *, ssize_t size); 634 635 void __hwasan_tag_memory(void *, u8 tag, ssize_t size); 636 637 void *__hwasan_memset(void *addr, int c, ssize_t len); 638 void *__hwasan_memmove(void *dest, const void *src, ssize_t len); 639 void *__hwasan_memcpy(void *dest, const void *src, ssize_t len); 640 641 void kasan_tag_mismatch(void *addr, unsigned long access_info, 642 unsigned long ret_ip); 643 644 #endif /* __MM_KASAN_KASAN_H */ 645