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 return static_branch_likely(&kasan_flag_vmalloc); 52} 53 54static inline bool kasan_async_fault_possible(void) 55{ 56 return kasan_mode == KASAN_MODE_ASYNC || kasan_mode == KASAN_MODE_ASYMM; 57} 58 59static inline bool kasan_sync_fault_possible(void) 60{ 61 return kasan_mode == KASAN_MODE_SYNC || kasan_mode == KASAN_MODE_ASYMM; 62} 63 64static 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 84static inline bool kasan_async_fault_possible(void) 85{ 86 return false; 87} 88 89static inline bool kasan_sync_fault_possible(void) 90{ 91 return true; 92} 93 94static 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. */ 104static 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. */ 118static 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 187struct kasan_track { 188 u32 pid; 189 depot_stack_handle_t stack; 190}; 191 192enum kasan_report_type { 193 KASAN_REPORT_ACCESS, 194 KASAN_REPORT_INVALID_FREE, 195 KASAN_REPORT_DOUBLE_FREE, 196}; 197 198struct 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. */ 219struct 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. */ 226struct 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 245struct 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 251struct 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 */ 266struct 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 275struct 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 283struct 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 295static 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 303static __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 */ 318bool 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 323static __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 330const void *kasan_find_first_bad_addr(const void *addr, size_t size); 331size_t kasan_get_alloc_size(void *object, struct kmem_cache *cache); 332void kasan_complete_mode_report_info(struct kasan_report_info *info); 333void kasan_metadata_fetch_row(char *buffer, void *row); 334 335#if defined(CONFIG_KASAN_SW_TAGS) || defined(CONFIG_KASAN_HW_TAGS) 336void kasan_print_tags(u8 addr_tag, const void *addr); 337#else 338static inline void kasan_print_tags(u8 addr_tag, const void *addr) { } 339#endif 340 341#if defined(CONFIG_KASAN_STACK) 342void kasan_print_address_stack_frame(const void *addr); 343#else 344static inline void kasan_print_address_stack_frame(const void *addr) { } 345#endif 346 347#ifdef CONFIG_KASAN_GENERIC 348void kasan_print_aux_stacks(struct kmem_cache *cache, const void *object); 349#else 350static inline void kasan_print_aux_stacks(struct kmem_cache *cache, const void *object) { } 351#endif 352 353bool kasan_report(const void *addr, size_t size, 354 bool is_write, unsigned long ip); 355void kasan_report_invalid_free(void *object, unsigned long ip, enum kasan_report_type type); 356 357struct slab *kasan_addr_to_slab(const void *addr); 358 359#ifdef CONFIG_KASAN_GENERIC 360void kasan_init_cache_meta(struct kmem_cache *cache, unsigned int *size); 361void kasan_init_object_meta(struct kmem_cache *cache, const void *object); 362struct kasan_alloc_meta *kasan_get_alloc_meta(struct kmem_cache *cache, 363 const void *object); 364struct kasan_free_meta *kasan_get_free_meta(struct kmem_cache *cache, 365 const void *object); 366#else 367static inline void kasan_init_cache_meta(struct kmem_cache *cache, unsigned int *size) { } 368static inline void kasan_init_object_meta(struct kmem_cache *cache, const void *object) { } 369#endif 370 371depot_stack_handle_t kasan_save_stack(gfp_t flags, bool can_alloc); 372void kasan_set_track(struct kasan_track *track, gfp_t flags); 373void kasan_save_alloc_info(struct kmem_cache *cache, void *object, gfp_t flags); 374void kasan_save_free_info(struct kmem_cache *cache, void *object); 375 376#if defined(CONFIG_KASAN_GENERIC) && \ 377 (defined(CONFIG_SLAB) || defined(CONFIG_SLUB)) 378bool kasan_quarantine_put(struct kmem_cache *cache, void *object); 379void kasan_quarantine_reduce(void); 380void kasan_quarantine_remove_cache(struct kmem_cache *cache); 381#else 382static inline bool kasan_quarantine_put(struct kmem_cache *cache, void *object) { return false; } 383static inline void kasan_quarantine_reduce(void) { } 384static inline void kasan_quarantine_remove_cache(struct kmem_cache *cache) { } 385#endif 386 387#ifndef arch_kasan_set_tag 388static 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 413void kasan_enable_hw_tags(void); 414 415#else /* CONFIG_KASAN_HW_TAGS */ 416 417static 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) 422void __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 427void kasan_force_async_fault(void); 428 429#else /* CONFIG_KASAN_HW_TAGS && CONFIG_KASAN_KUNIT_TEST */ 430 431static 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 436u8 kasan_random_tag(void); 437#elif defined(CONFIG_KASAN_HW_TAGS) 438static inline u8 kasan_random_tag(void) { return hw_get_random_tag(); } 439#else 440static inline u8 kasan_random_tag(void) { return 0; } 441#endif 442 443#ifdef CONFIG_KASAN_HW_TAGS 444 445static 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 461static 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 478static 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 */ 497void 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 */ 510void kasan_unpoison(const void *addr, size_t size, bool init); 511 512bool 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 */ 527void kasan_poison_last_granule(const void *address, size_t size); 528 529#else /* CONFIG_KASAN_GENERIC */ 530 531static 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 536static 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 543void kasan_kunit_test_suite_start(void); 544void kasan_kunit_test_suite_end(void); 545 546#else /* CONFIG_KASAN_KUNIT_TEST */ 547 548static inline void kasan_kunit_test_suite_start(void) { } 549static 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 555bool kasan_save_enable_multi_shot(void); 556void 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 565asmlinkage void kasan_unpoison_task_stack_below(const void *watermark); 566void __asan_register_globals(void *globals, ssize_t size); 567void __asan_unregister_globals(void *globals, ssize_t size); 568void __asan_handle_no_return(void); 569void __asan_alloca_poison(void *, ssize_t size); 570void __asan_allocas_unpoison(void *stack_top, ssize_t stack_bottom); 571 572void __asan_load1(void *); 573void __asan_store1(void *); 574void __asan_load2(void *); 575void __asan_store2(void *); 576void __asan_load4(void *); 577void __asan_store4(void *); 578void __asan_load8(void *); 579void __asan_store8(void *); 580void __asan_load16(void *); 581void __asan_store16(void *); 582void __asan_loadN(void *, ssize_t size); 583void __asan_storeN(void *, ssize_t size); 584 585void __asan_load1_noabort(void *); 586void __asan_store1_noabort(void *); 587void __asan_load2_noabort(void *); 588void __asan_store2_noabort(void *); 589void __asan_load4_noabort(void *); 590void __asan_store4_noabort(void *); 591void __asan_load8_noabort(void *); 592void __asan_store8_noabort(void *); 593void __asan_load16_noabort(void *); 594void __asan_store16_noabort(void *); 595void __asan_loadN_noabort(void *, ssize_t size); 596void __asan_storeN_noabort(void *, ssize_t size); 597 598void __asan_report_load1_noabort(void *); 599void __asan_report_store1_noabort(void *); 600void __asan_report_load2_noabort(void *); 601void __asan_report_store2_noabort(void *); 602void __asan_report_load4_noabort(void *); 603void __asan_report_store4_noabort(void *); 604void __asan_report_load8_noabort(void *); 605void __asan_report_store8_noabort(void *); 606void __asan_report_load16_noabort(void *); 607void __asan_report_store16_noabort(void *); 608void __asan_report_load_n_noabort(void *, ssize_t size); 609void __asan_report_store_n_noabort(void *, ssize_t size); 610 611void __asan_set_shadow_00(const void *addr, ssize_t size); 612void __asan_set_shadow_f1(const void *addr, ssize_t size); 613void __asan_set_shadow_f2(const void *addr, ssize_t size); 614void __asan_set_shadow_f3(const void *addr, ssize_t size); 615void __asan_set_shadow_f5(const void *addr, ssize_t size); 616void __asan_set_shadow_f8(const void *addr, ssize_t size); 617 618void *__asan_memset(void *addr, int c, ssize_t len); 619void *__asan_memmove(void *dest, const void *src, ssize_t len); 620void *__asan_memcpy(void *dest, const void *src, ssize_t len); 621 622void __hwasan_load1_noabort(void *); 623void __hwasan_store1_noabort(void *); 624void __hwasan_load2_noabort(void *); 625void __hwasan_store2_noabort(void *); 626void __hwasan_load4_noabort(void *); 627void __hwasan_store4_noabort(void *); 628void __hwasan_load8_noabort(void *); 629void __hwasan_store8_noabort(void *); 630void __hwasan_load16_noabort(void *); 631void __hwasan_store16_noabort(void *); 632void __hwasan_loadN_noabort(void *, ssize_t size); 633void __hwasan_storeN_noabort(void *, ssize_t size); 634 635void __hwasan_tag_memory(void *, u8 tag, ssize_t size); 636 637void *__hwasan_memset(void *addr, int c, ssize_t len); 638void *__hwasan_memmove(void *dest, const void *src, ssize_t len); 639void *__hwasan_memcpy(void *dest, const void *src, ssize_t len); 640 641void kasan_tag_mismatch(void *addr, unsigned long access_info, 642 unsigned long ret_ip); 643 644#endif /* __MM_KASAN_KASAN_H */ 645