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 kasan_stack_collection_enabled(void)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 kasan_stack_collection_enabled(void)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 kasan_vmalloc_enabled(void)49 static 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 kasan_async_fault_possible(void)55 static inline bool kasan_async_fault_possible(void) 56 { 57 return kasan_mode == KASAN_MODE_ASYNC || kasan_mode == KASAN_MODE_ASYMM; 58 } 59 kasan_sync_fault_possible(void)60 static inline bool kasan_sync_fault_possible(void) 61 { 62 return kasan_mode == KASAN_MODE_SYNC || kasan_mode == KASAN_MODE_ASYMM; 63 } 64 kasan_sample_page_alloc(unsigned int order)65 static 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 kasan_vmalloc_enabled(void)85 static inline bool kasan_vmalloc_enabled(void) 86 { 87 return IS_ENABLED(CONFIG_KASAN_VMALLOC); 88 } 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 /* 110 * Generic KASAN uses per-object metadata to store alloc and free stack traces 111 * and the quarantine link. 112 */ kasan_requires_meta(void)113 static 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 */ 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_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 64 192 193 struct 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 }; 201 202 enum kasan_report_type { 203 KASAN_REPORT_ACCESS, 204 KASAN_REPORT_INVALID_FREE, 205 KASAN_REPORT_DOUBLE_FREE, 206 }; 207 208 struct 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. */ 229 struct 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. */ 236 struct 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 */ 264 struct 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 }; 269 270 struct 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 */ 289 struct 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) 297 298 struct kasan_stack_ring_entry { 299 void *ptr; 300 size_t size; 301 struct kasan_track track; 302 bool is_free; 303 }; 304 305 struct 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 addr_in_shadow(const void * addr)316 static __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 kasan_shadow_to_mem(const void * shadow_addr)323 static 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 addr_has_metadata(const void * addr)331 static __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 */ 346 bool 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 addr_has_metadata(const void * addr)351 static __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 */ 357 358 const void *kasan_find_first_bad_addr(const void *addr, size_t size); 359 size_t kasan_get_alloc_size(void *object, struct kmem_cache *cache); 360 void kasan_complete_mode_report_info(struct kasan_report_info *info); 361 void kasan_metadata_fetch_row(char *buffer, void *row); 362 363 #if defined(CONFIG_KASAN_SW_TAGS) || defined(CONFIG_KASAN_HW_TAGS) 364 void kasan_print_tags(u8 addr_tag, const void *addr); 365 #else kasan_print_tags(u8 addr_tag,const void * addr)366 static inline void kasan_print_tags(u8 addr_tag, const void *addr) { } 367 #endif 368 369 #if defined(CONFIG_KASAN_STACK) 370 void kasan_print_address_stack_frame(const void *addr); 371 #else kasan_print_address_stack_frame(const void * addr)372 static inline void kasan_print_address_stack_frame(const void *addr) { } 373 #endif 374 375 #ifdef CONFIG_KASAN_GENERIC 376 void kasan_print_aux_stacks(struct kmem_cache *cache, const void *object); 377 #else kasan_print_aux_stacks(struct kmem_cache * cache,const void * object)378 static inline void kasan_print_aux_stacks(struct kmem_cache *cache, const void *object) { } 379 #endif 380 381 bool kasan_report(const void *addr, size_t size, 382 bool is_write, unsigned long ip); 383 void kasan_report_invalid_free(void *object, unsigned long ip, enum kasan_report_type type); 384 385 struct slab *kasan_addr_to_slab(const void *addr); 386 387 #ifdef CONFIG_KASAN_GENERIC 388 struct kasan_alloc_meta *kasan_get_alloc_meta(struct kmem_cache *cache, 389 const void *object); 390 struct kasan_free_meta *kasan_get_free_meta(struct kmem_cache *cache, 391 const void *object); 392 void kasan_init_object_meta(struct kmem_cache *cache, const void *object); 393 #else kasan_init_object_meta(struct kmem_cache * cache,const void * object)394 static inline void kasan_init_object_meta(struct kmem_cache *cache, const void *object) { } 395 #endif 396 397 depot_stack_handle_t kasan_save_stack(gfp_t flags, depot_flags_t depot_flags); 398 void kasan_set_track(struct kasan_track *track, depot_stack_handle_t stack); 399 void kasan_save_track(struct kasan_track *track, gfp_t flags); 400 void kasan_save_alloc_info(struct kmem_cache *cache, void *object, gfp_t flags); 401 void kasan_save_free_info(struct kmem_cache *cache, void *object); 402 403 #ifdef CONFIG_KASAN_GENERIC 404 bool kasan_quarantine_put(struct kmem_cache *cache, void *object); 405 void kasan_quarantine_reduce(void); 406 void kasan_quarantine_remove_cache(struct kmem_cache *cache); 407 #else kasan_quarantine_put(struct kmem_cache * cache,void * object)408 static inline bool kasan_quarantine_put(struct kmem_cache *cache, void *object) { return false; } kasan_quarantine_reduce(void)409 static inline void kasan_quarantine_reduce(void) { } kasan_quarantine_remove_cache(struct kmem_cache * cache)410 static inline void kasan_quarantine_remove_cache(struct kmem_cache *cache) { } 411 #endif 412 413 #ifndef arch_kasan_set_tag arch_kasan_set_tag(const void * addr,u8 tag)414 static 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)) 438 439 void kasan_enable_hw_tags(void); 440 441 #else /* CONFIG_KASAN_HW_TAGS */ 442 kasan_enable_hw_tags(void)443 static 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) 448 void __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) 452 453 void kasan_force_async_fault(void); 454 455 #else /* CONFIG_KASAN_HW_TAGS && CONFIG_KASAN_KUNIT_TEST */ 456 kasan_force_async_fault(void)457 static 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 462 u8 kasan_random_tag(void); 463 #elif defined(CONFIG_KASAN_HW_TAGS) kasan_random_tag(void)464 static inline u8 kasan_random_tag(void) { return hw_get_random_tag(); } 465 #else kasan_random_tag(void)466 static inline u8 kasan_random_tag(void) { return 0; } 467 #endif 468 469 #ifdef CONFIG_KASAN_HW_TAGS 470 kasan_poison(const void * addr,size_t size,u8 value,bool init)471 static 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 kasan_unpoison(const void * addr,size_t size,bool init)481 static 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 kasan_byte_accessible(const void * addr)492 static 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 */ 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) 554 555 void kasan_kunit_test_suite_start(void); 556 void kasan_kunit_test_suite_end(void); 557 558 #ifdef CONFIG_RUST 559 char kasan_test_rust_uaf(void); 560 #else kasan_test_rust_uaf(void)561 static inline char kasan_test_rust_uaf(void) { return '\0'; } 562 #endif 563 564 #else /* CONFIG_KASAN_KUNIT_TEST */ 565 kasan_kunit_test_suite_start(void)566 static inline void kasan_kunit_test_suite_start(void) { } kasan_kunit_test_suite_end(void)567 static inline void kasan_kunit_test_suite_end(void) { } 568 569 #endif /* CONFIG_KASAN_KUNIT_TEST */ 570 571 #if IS_ENABLED(CONFIG_KASAN_KUNIT_TEST) || IS_ENABLED(CONFIG_KASAN_MODULE_TEST) 572 573 bool kasan_save_enable_multi_shot(void); 574 void kasan_restore_multi_shot(bool enabled); 575 576 #endif 577 578 /* 579 * Exported functions for interfaces called from assembly or from generated 580 * code. Declared here to avoid warnings about missing declarations. 581 */ 582 583 void __asan_register_globals(void *globals, ssize_t size); 584 void __asan_unregister_globals(void *globals, ssize_t size); 585 void __asan_handle_no_return(void); 586 void __asan_alloca_poison(void *, ssize_t size); 587 void __asan_allocas_unpoison(void *stack_top, ssize_t stack_bottom); 588 589 void __asan_load1(void *); 590 void __asan_store1(void *); 591 void __asan_load2(void *); 592 void __asan_store2(void *); 593 void __asan_load4(void *); 594 void __asan_store4(void *); 595 void __asan_load8(void *); 596 void __asan_store8(void *); 597 void __asan_load16(void *); 598 void __asan_store16(void *); 599 void __asan_loadN(void *, ssize_t size); 600 void __asan_storeN(void *, ssize_t size); 601 602 void __asan_load1_noabort(void *); 603 void __asan_store1_noabort(void *); 604 void __asan_load2_noabort(void *); 605 void __asan_store2_noabort(void *); 606 void __asan_load4_noabort(void *); 607 void __asan_store4_noabort(void *); 608 void __asan_load8_noabort(void *); 609 void __asan_store8_noabort(void *); 610 void __asan_load16_noabort(void *); 611 void __asan_store16_noabort(void *); 612 void __asan_loadN_noabort(void *, ssize_t size); 613 void __asan_storeN_noabort(void *, ssize_t size); 614 615 void __asan_report_load1_noabort(void *); 616 void __asan_report_store1_noabort(void *); 617 void __asan_report_load2_noabort(void *); 618 void __asan_report_store2_noabort(void *); 619 void __asan_report_load4_noabort(void *); 620 void __asan_report_store4_noabort(void *); 621 void __asan_report_load8_noabort(void *); 622 void __asan_report_store8_noabort(void *); 623 void __asan_report_load16_noabort(void *); 624 void __asan_report_store16_noabort(void *); 625 void __asan_report_load_n_noabort(void *, ssize_t size); 626 void __asan_report_store_n_noabort(void *, ssize_t size); 627 628 void __asan_set_shadow_00(const void *addr, ssize_t size); 629 void __asan_set_shadow_f1(const void *addr, ssize_t size); 630 void __asan_set_shadow_f2(const void *addr, ssize_t size); 631 void __asan_set_shadow_f3(const void *addr, ssize_t size); 632 void __asan_set_shadow_f5(const void *addr, ssize_t size); 633 void __asan_set_shadow_f8(const void *addr, ssize_t size); 634 635 void *__asan_memset(void *addr, int c, ssize_t len); 636 void *__asan_memmove(void *dest, const void *src, ssize_t len); 637 void *__asan_memcpy(void *dest, const void *src, ssize_t len); 638 639 void __hwasan_load1_noabort(void *); 640 void __hwasan_store1_noabort(void *); 641 void __hwasan_load2_noabort(void *); 642 void __hwasan_store2_noabort(void *); 643 void __hwasan_load4_noabort(void *); 644 void __hwasan_store4_noabort(void *); 645 void __hwasan_load8_noabort(void *); 646 void __hwasan_store8_noabort(void *); 647 void __hwasan_load16_noabort(void *); 648 void __hwasan_store16_noabort(void *); 649 void __hwasan_loadN_noabort(void *, ssize_t size); 650 void __hwasan_storeN_noabort(void *, ssize_t size); 651 652 void __hwasan_tag_memory(void *, u8 tag, ssize_t size); 653 654 void *__hwasan_memset(void *addr, int c, ssize_t len); 655 void *__hwasan_memmove(void *dest, const void *src, ssize_t len); 656 void *__hwasan_memcpy(void *dest, const void *src, ssize_t len); 657 658 void kasan_tag_mismatch(void *addr, unsigned long access_info, 659 unsigned long ret_ip); 660 661 #endif /* __MM_KASAN_KASAN_H */ 662