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); 401void kasan_save_free_info(struct kmem_cache *cache, void *object); 402 403#ifdef CONFIG_KASAN_GENERIC 404bool kasan_quarantine_put(struct kmem_cache *cache, void *object); 405void kasan_quarantine_reduce(void); 406void kasan_quarantine_remove_cache(struct kmem_cache *cache); 407#else 408static inline bool kasan_quarantine_put(struct kmem_cache *cache, void *object) { return false; } 409static inline void kasan_quarantine_reduce(void) { } 410static inline void kasan_quarantine_remove_cache(struct kmem_cache *cache) { } 411#endif 412 413#ifndef arch_kasan_set_tag 414static inline const void *arch_kasan_set_tag(const void *addr, u8 tag) 415{ 416 return addr; 417} 418#endif 419#ifndef arch_kasan_get_tag 420#define arch_kasan_get_tag(addr) 0 421#endif 422 423#define set_tag(addr, tag) ((void *)arch_kasan_set_tag((addr), (tag))) 424#define get_tag(addr) arch_kasan_get_tag(addr) 425 426#ifdef CONFIG_KASAN_HW_TAGS 427 428#define hw_enable_tag_checks_sync() arch_enable_tag_checks_sync() 429#define hw_enable_tag_checks_async() arch_enable_tag_checks_async() 430#define hw_enable_tag_checks_asymm() arch_enable_tag_checks_asymm() 431#define hw_suppress_tag_checks_start() arch_suppress_tag_checks_start() 432#define hw_suppress_tag_checks_stop() arch_suppress_tag_checks_stop() 433#define hw_force_async_tag_fault() arch_force_async_tag_fault() 434#define hw_get_random_tag() arch_get_random_tag() 435#define hw_get_mem_tag(addr) arch_get_mem_tag(addr) 436#define hw_set_mem_tag_range(addr, size, tag, init) \ 437 arch_set_mem_tag_range((addr), (size), (tag), (init)) 438 439void kasan_enable_hw_tags(void); 440 441#else /* CONFIG_KASAN_HW_TAGS */ 442 443static inline void kasan_enable_hw_tags(void) { } 444 445#endif /* CONFIG_KASAN_HW_TAGS */ 446 447#if defined(CONFIG_KASAN_SW_TAGS) || defined(CONFIG_KASAN_HW_TAGS) 448void __init kasan_init_tags(void); 449#endif /* CONFIG_KASAN_SW_TAGS || CONFIG_KASAN_HW_TAGS */ 450 451#if defined(CONFIG_KASAN_HW_TAGS) && IS_ENABLED(CONFIG_KASAN_KUNIT_TEST) 452 453void kasan_force_async_fault(void); 454 455#else /* CONFIG_KASAN_HW_TAGS && CONFIG_KASAN_KUNIT_TEST */ 456 457static inline void kasan_force_async_fault(void) { } 458 459#endif /* CONFIG_KASAN_HW_TAGS && CONFIG_KASAN_KUNIT_TEST */ 460 461#ifdef CONFIG_KASAN_SW_TAGS 462u8 kasan_random_tag(void); 463#elif defined(CONFIG_KASAN_HW_TAGS) 464static inline u8 kasan_random_tag(void) { return hw_get_random_tag(); } 465#else 466static inline u8 kasan_random_tag(void) { return 0; } 467#endif 468 469#ifdef CONFIG_KASAN_HW_TAGS 470 471static inline void kasan_poison(const void *addr, size_t size, u8 value, bool init) 472{ 473 if (WARN_ON((unsigned long)addr & KASAN_GRANULE_MASK)) 474 return; 475 if (WARN_ON(size & KASAN_GRANULE_MASK)) 476 return; 477 478 hw_set_mem_tag_range(kasan_reset_tag(addr), size, value, init); 479} 480 481static inline void kasan_unpoison(const void *addr, size_t size, bool init) 482{ 483 u8 tag = get_tag(addr); 484 485 if (WARN_ON((unsigned long)addr & KASAN_GRANULE_MASK)) 486 return; 487 size = round_up(size, KASAN_GRANULE_SIZE); 488 489 hw_set_mem_tag_range(kasan_reset_tag(addr), size, tag, init); 490} 491 492static inline bool kasan_byte_accessible(const void *addr) 493{ 494 u8 ptr_tag = get_tag(addr); 495 u8 mem_tag = hw_get_mem_tag((void *)addr); 496 497 return ptr_tag == KASAN_TAG_KERNEL || ptr_tag == mem_tag; 498} 499 500#else /* CONFIG_KASAN_HW_TAGS */ 501 502/** 503 * kasan_poison - mark the memory range as inaccessible 504 * @addr - range start address, must be aligned to KASAN_GRANULE_SIZE 505 * @size - range size, must be aligned to KASAN_GRANULE_SIZE 506 * @value - value that's written to metadata for the range 507 * @init - whether to initialize the memory range (only for hardware tag-based) 508 */ 509void 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 */ 522void kasan_unpoison(const void *addr, size_t size, bool init); 523 524bool 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 */ 539void kasan_poison_last_granule(const void *address, size_t size); 540 541#else /* CONFIG_KASAN_GENERIC */ 542 543static 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 548static 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) 554 555void kasan_kunit_test_suite_start(void); 556void kasan_kunit_test_suite_end(void); 557 558#else /* CONFIG_KASAN_KUNIT_TEST */ 559 560static inline void kasan_kunit_test_suite_start(void) { } 561static inline void kasan_kunit_test_suite_end(void) { } 562 563#endif /* CONFIG_KASAN_KUNIT_TEST */ 564 565#if IS_ENABLED(CONFIG_KASAN_KUNIT_TEST) || IS_ENABLED(CONFIG_KASAN_MODULE_TEST) 566 567bool kasan_save_enable_multi_shot(void); 568void kasan_restore_multi_shot(bool enabled); 569 570#endif 571 572/* 573 * Exported functions for interfaces called from assembly or from generated 574 * code. Declared here to avoid warnings about missing declarations. 575 */ 576 577void __asan_register_globals(void *globals, ssize_t size); 578void __asan_unregister_globals(void *globals, ssize_t size); 579void __asan_handle_no_return(void); 580void __asan_alloca_poison(void *, ssize_t size); 581void __asan_allocas_unpoison(void *stack_top, ssize_t stack_bottom); 582 583void __asan_load1(void *); 584void __asan_store1(void *); 585void __asan_load2(void *); 586void __asan_store2(void *); 587void __asan_load4(void *); 588void __asan_store4(void *); 589void __asan_load8(void *); 590void __asan_store8(void *); 591void __asan_load16(void *); 592void __asan_store16(void *); 593void __asan_loadN(void *, ssize_t size); 594void __asan_storeN(void *, ssize_t size); 595 596void __asan_load1_noabort(void *); 597void __asan_store1_noabort(void *); 598void __asan_load2_noabort(void *); 599void __asan_store2_noabort(void *); 600void __asan_load4_noabort(void *); 601void __asan_store4_noabort(void *); 602void __asan_load8_noabort(void *); 603void __asan_store8_noabort(void *); 604void __asan_load16_noabort(void *); 605void __asan_store16_noabort(void *); 606void __asan_loadN_noabort(void *, ssize_t size); 607void __asan_storeN_noabort(void *, ssize_t size); 608 609void __asan_report_load1_noabort(void *); 610void __asan_report_store1_noabort(void *); 611void __asan_report_load2_noabort(void *); 612void __asan_report_store2_noabort(void *); 613void __asan_report_load4_noabort(void *); 614void __asan_report_store4_noabort(void *); 615void __asan_report_load8_noabort(void *); 616void __asan_report_store8_noabort(void *); 617void __asan_report_load16_noabort(void *); 618void __asan_report_store16_noabort(void *); 619void __asan_report_load_n_noabort(void *, ssize_t size); 620void __asan_report_store_n_noabort(void *, ssize_t size); 621 622void __asan_set_shadow_00(const void *addr, ssize_t size); 623void __asan_set_shadow_f1(const void *addr, ssize_t size); 624void __asan_set_shadow_f2(const void *addr, ssize_t size); 625void __asan_set_shadow_f3(const void *addr, ssize_t size); 626void __asan_set_shadow_f5(const void *addr, ssize_t size); 627void __asan_set_shadow_f8(const void *addr, ssize_t size); 628 629void *__asan_memset(void *addr, int c, ssize_t len); 630void *__asan_memmove(void *dest, const void *src, ssize_t len); 631void *__asan_memcpy(void *dest, const void *src, ssize_t len); 632 633void __hwasan_load1_noabort(void *); 634void __hwasan_store1_noabort(void *); 635void __hwasan_load2_noabort(void *); 636void __hwasan_store2_noabort(void *); 637void __hwasan_load4_noabort(void *); 638void __hwasan_store4_noabort(void *); 639void __hwasan_load8_noabort(void *); 640void __hwasan_store8_noabort(void *); 641void __hwasan_load16_noabort(void *); 642void __hwasan_store16_noabort(void *); 643void __hwasan_loadN_noabort(void *, ssize_t size); 644void __hwasan_storeN_noabort(void *, ssize_t size); 645 646void __hwasan_tag_memory(void *, u8 tag, ssize_t size); 647 648void *__hwasan_memset(void *addr, int c, ssize_t len); 649void *__hwasan_memmove(void *dest, const void *src, ssize_t len); 650void *__hwasan_memcpy(void *dest, const void *src, ssize_t len); 651 652void kasan_tag_mismatch(void *addr, unsigned long access_info, 653 unsigned long ret_ip); 654 655#endif /* __MM_KASAN_KASAN_H */ 656