1 files changed, 644 insertions, 0 deletions
diff --git a/mm/kasan/kasan.h b/mm/kasan/kasan.h
new file mode 100644
index 000000000..d37831b85
--- /dev/null
+++ b/mm/kasan/kasan.h
@@ -0,0 +1,644 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __MM_KASAN_KASAN_H
+#define __MM_KASAN_KASAN_H
+
+#include <linux/atomic.h>
+#include <linux/kasan.h>
+#include <linux/kasan-tags.h>
+#include <linux/kfence.h>
+#include <linux/stackdepot.h>
+
+#if defined(CONFIG_KASAN_SW_TAGS) || defined(CONFIG_KASAN_HW_TAGS)
+
+#include <linux/static_key.h>
+
+DECLARE_STATIC_KEY_TRUE(kasan_flag_stacktrace);
+
+static inline bool kasan_stack_collection_enabled(void)
+{
+	return static_branch_unlikely(&kasan_flag_stacktrace);
+}
+
+#else /* CONFIG_KASAN_SW_TAGS || CONFIG_KASAN_HW_TAGS */
+
+static inline bool kasan_stack_collection_enabled(void)
+{
+	return true;
+}
+
+#endif /* CONFIG_KASAN_SW_TAGS || CONFIG_KASAN_HW_TAGS */
+
+#ifdef CONFIG_KASAN_HW_TAGS
+
+#include "../slab.h"
+
+DECLARE_STATIC_KEY_TRUE(kasan_flag_vmalloc);
+
+enum kasan_mode {
+	KASAN_MODE_SYNC,
+	KASAN_MODE_ASYNC,
+	KASAN_MODE_ASYMM,
+};
+
+extern enum kasan_mode kasan_mode __ro_after_init;
+
+extern unsigned long kasan_page_alloc_sample;
+extern unsigned int kasan_page_alloc_sample_order;
+DECLARE_PER_CPU(long, kasan_page_alloc_skip);
+
+static inline bool kasan_vmalloc_enabled(void)
+{
+	return static_branch_likely(&kasan_flag_vmalloc);
+}
+
+static inline bool kasan_async_fault_possible(void)
+{
+	return kasan_mode == KASAN_MODE_ASYNC || kasan_mode == KASAN_MODE_ASYMM;
+}
+
+static inline bool kasan_sync_fault_possible(void)
+{
+	return kasan_mode == KASAN_MODE_SYNC || kasan_mode == KASAN_MODE_ASYMM;
+}
+
+static inline bool kasan_sample_page_alloc(unsigned int order)
+{
+	/* Fast-path for when sampling is disabled. */
+	if (kasan_page_alloc_sample == 1)
+		return true;
+
+	if (order < kasan_page_alloc_sample_order)
+		return true;
+
+	if (this_cpu_dec_return(kasan_page_alloc_skip) < 0) {
+		this_cpu_write(kasan_page_alloc_skip,
+			       kasan_page_alloc_sample - 1);
+		return true;
+	}
+
+	return false;
+}
+
+#else /* CONFIG_KASAN_HW_TAGS */
+
+static inline bool kasan_async_fault_possible(void)
+{
+	return false;
+}
+
+static inline bool kasan_sync_fault_possible(void)
+{
+	return true;
+}
+
+static inline bool kasan_sample_page_alloc(unsigned int order)
+{
+	return true;
+}
+
+#endif /* CONFIG_KASAN_HW_TAGS */
+
+#ifdef CONFIG_KASAN_GENERIC
+
+/* Generic KASAN uses per-object metadata to store stack traces. */
+static inline bool kasan_requires_meta(void)
+{
+	/*
+	 * Technically, Generic KASAN always collects stack traces right now.
+	 * However, let's use kasan_stack_collection_enabled() in case the
+	 * kasan.stacktrace command-line argument is changed to affect
+	 * Generic KASAN.
+	 */
+	return kasan_stack_collection_enabled();
+}
+
+#else /* CONFIG_KASAN_GENERIC */
+
+/* Tag-based KASAN modes do not use per-object metadata. */
+static inline bool kasan_requires_meta(void)
+{
+	return false;
+}
+
+#endif /* CONFIG_KASAN_GENERIC */
+
+#if defined(CONFIG_KASAN_GENERIC) || defined(CONFIG_KASAN_SW_TAGS)
+#define KASAN_GRANULE_SIZE	(1UL << KASAN_SHADOW_SCALE_SHIFT)
+#else
+#include <asm/mte-kasan.h>
+#define KASAN_GRANULE_SIZE	MTE_GRANULE_SIZE
+#endif
+
+#define KASAN_GRANULE_MASK	(KASAN_GRANULE_SIZE - 1)
+
+#define KASAN_MEMORY_PER_SHADOW_PAGE	(KASAN_GRANULE_SIZE << PAGE_SHIFT)
+
+#ifdef CONFIG_KASAN_GENERIC
+#define KASAN_PAGE_FREE		0xFF  /* freed page */
+#define KASAN_PAGE_REDZONE	0xFE  /* redzone for kmalloc_large allocation */
+#define KASAN_SLAB_REDZONE	0xFC  /* redzone for slab object */
+#define KASAN_SLAB_FREE		0xFB  /* freed slab object */
+#define KASAN_VMALLOC_INVALID	0xF8  /* inaccessible space in vmap area */
+#else
+#define KASAN_PAGE_FREE		KASAN_TAG_INVALID
+#define KASAN_PAGE_REDZONE	KASAN_TAG_INVALID
+#define KASAN_SLAB_REDZONE	KASAN_TAG_INVALID
+#define KASAN_SLAB_FREE		KASAN_TAG_INVALID
+#define KASAN_VMALLOC_INVALID	KASAN_TAG_INVALID /* only used for SW_TAGS */
+#endif
+
+#ifdef CONFIG_KASAN_GENERIC
+
+#define KASAN_SLAB_FREETRACK	0xFA  /* freed slab object with free track */
+#define KASAN_GLOBAL_REDZONE	0xF9  /* redzone for global variable */
+
+/* Stack redzone shadow values. Compiler ABI, do not change. */
+#define KASAN_STACK_LEFT	0xF1
+#define KASAN_STACK_MID		0xF2
+#define KASAN_STACK_RIGHT	0xF3
+#define KASAN_STACK_PARTIAL	0xF4
+
+/* alloca redzone shadow values. */
+#define KASAN_ALLOCA_LEFT	0xCA
+#define KASAN_ALLOCA_RIGHT	0xCB
+
+/* alloca redzone size. Compiler ABI, do not change. */
+#define KASAN_ALLOCA_REDZONE_SIZE	32
+
+/* Stack frame marker. Compiler ABI, do not change. */
+#define KASAN_CURRENT_STACK_FRAME_MAGIC 0x41B58AB3
+
+/* Dummy value to avoid breaking randconfig/all*config builds. */
+#ifndef KASAN_ABI_VERSION
+#define KASAN_ABI_VERSION 1
+#endif
+
+#endif /* CONFIG_KASAN_GENERIC */
+
+/* Metadata layout customization. */
+#define META_BYTES_PER_BLOCK 1
+#define META_BLOCKS_PER_ROW 16
+#define META_BYTES_PER_ROW (META_BLOCKS_PER_ROW * META_BYTES_PER_BLOCK)
+#define META_MEM_BYTES_PER_ROW (META_BYTES_PER_ROW * KASAN_GRANULE_SIZE)
+#define META_ROWS_AROUND_ADDR 2
+
+#define KASAN_STACK_DEPTH 64
+
+struct kasan_track {
+	u32 pid;
+	depot_stack_handle_t stack;
+};
+
+enum kasan_report_type {
+	KASAN_REPORT_ACCESS,
+	KASAN_REPORT_INVALID_FREE,
+	KASAN_REPORT_DOUBLE_FREE,
+};
+
+struct kasan_report_info {
+	/* Filled in by kasan_report_*(). */
+	enum kasan_report_type type;
+	const void *access_addr;
+	size_t access_size;
+	bool is_write;
+	unsigned long ip;
+
+	/* Filled in by the common reporting code. */
+	const void *first_bad_addr;
+	struct kmem_cache *cache;
+	void *object;
+	size_t alloc_size;
+
+	/* Filled in by the mode-specific reporting code. */
+	const char *bug_type;
+	struct kasan_track alloc_track;
+	struct kasan_track free_track;
+};
+
+/* Do not change the struct layout: compiler ABI. */
+struct kasan_source_location {
+	const char *filename;
+	int line_no;
+	int column_no;
+};
+
+/* Do not change the struct layout: compiler ABI. */
+struct kasan_global {
+	const void *beg;		/* Address of the beginning of the global variable. */
+	size_t size;			/* Size of the global variable. */
+	size_t size_with_redzone;	/* Size of the variable + size of the redzone. 32 bytes aligned. */
+	const void *name;
+	const void *module_name;	/* Name of the module where the global variable is declared. */
+	unsigned long has_dynamic_init;	/* This is needed for C++. */
+#if KASAN_ABI_VERSION >= 4
+	struct kasan_source_location *location;
+#endif
+#if KASAN_ABI_VERSION >= 5
+	char *odr_indicator;
+#endif
+};
+
+/* Structures for keeping alloc and free meta. */
+
+#ifdef CONFIG_KASAN_GENERIC
+
+struct kasan_alloc_meta {
+	struct kasan_track alloc_track;
+	/* Free track is stored in kasan_free_meta. */
+	depot_stack_handle_t aux_stack[2];
+};
+
+struct qlist_node {
+	struct qlist_node *next;
+};
+
+/*
+ * Free meta is stored either in the object itself or in the redzone after the
+ * object. In the former case, free meta offset is 0. In the latter case, the
+ * offset is between 0 and INT_MAX. INT_MAX marks that free meta is not present.
+ */
+#define KASAN_NO_FREE_META INT_MAX
+
+/*
+ * Free meta is only used by Generic mode while the object is in quarantine.
+ * After that, slab allocator stores the freelist pointer in the object.
+ */
+struct kasan_free_meta {
+	struct qlist_node quarantine_link;
+	struct kasan_track free_track;
+};
+
+#endif /* CONFIG_KASAN_GENERIC */
+
+#if defined(CONFIG_KASAN_SW_TAGS) || defined(CONFIG_KASAN_HW_TAGS)
+
+struct kasan_stack_ring_entry {
+	void *ptr;
+	size_t size;
+	u32 pid;
+	depot_stack_handle_t stack;
+	bool is_free;
+};
+
+struct kasan_stack_ring {
+	rwlock_t lock;
+	size_t size;
+	atomic64_t pos;
+	struct kasan_stack_ring_entry *entries;
+};
+
+#endif /* CONFIG_KASAN_SW_TAGS || CONFIG_KASAN_HW_TAGS */
+
+#if defined(CONFIG_KASAN_GENERIC) || defined(CONFIG_KASAN_SW_TAGS)
+
+#ifndef kasan_shadow_to_mem
+static inline const void *kasan_shadow_to_mem(const void *shadow_addr)
+{
+	return (void *)(((unsigned long)shadow_addr - KASAN_SHADOW_OFFSET)
+		<< KASAN_SHADOW_SCALE_SHIFT);
+}
+#endif
+
+#ifndef addr_has_metadata
+static __always_inline bool addr_has_metadata(const void *addr)
+{
+	return (kasan_reset_tag(addr) >=
+		kasan_shadow_to_mem((void *)KASAN_SHADOW_START));
+}
+#endif
+
+/**
+ * kasan_check_range - Check memory region, and report if invalid access.
+ * @addr: the accessed address
+ * @size: the accessed size
+ * @write: true if access is a write access
+ * @ret_ip: return address
+ * @return: true if access was valid, false if invalid
+ */
+bool kasan_check_range(const void *addr, size_t size, bool write,
+				unsigned long ret_ip);
+
+#else /* CONFIG_KASAN_GENERIC || CONFIG_KASAN_SW_TAGS */
+
+static __always_inline bool addr_has_metadata(const void *addr)
+{
+	return (is_vmalloc_addr(addr) || virt_addr_valid(addr));
+}
+
+#endif /* CONFIG_KASAN_GENERIC || CONFIG_KASAN_SW_TAGS */
+
+const void *kasan_find_first_bad_addr(const void *addr, size_t size);
+size_t kasan_get_alloc_size(void *object, struct kmem_cache *cache);
+void kasan_complete_mode_report_info(struct kasan_report_info *info);
+void kasan_metadata_fetch_row(char *buffer, void *row);
+
+#if defined(CONFIG_KASAN_SW_TAGS) || defined(CONFIG_KASAN_HW_TAGS)
+void kasan_print_tags(u8 addr_tag, const void *addr);
+#else
+static inline void kasan_print_tags(u8 addr_tag, const void *addr) { }
+#endif
+
+#if defined(CONFIG_KASAN_STACK)
+void kasan_print_address_stack_frame(const void *addr);
+#else
+static inline void kasan_print_address_stack_frame(const void *addr) { }
+#endif
+
+#ifdef CONFIG_KASAN_GENERIC
+void kasan_print_aux_stacks(struct kmem_cache *cache, const void *object);
+#else
+static inline void kasan_print_aux_stacks(struct kmem_cache *cache, const void *object) { }
+#endif
+
+bool kasan_report(const void *addr, size_t size,
+		bool is_write, unsigned long ip);
+void kasan_report_invalid_free(void *object, unsigned long ip, enum kasan_report_type type);
+
+struct slab *kasan_addr_to_slab(const void *addr);
+
+#ifdef CONFIG_KASAN_GENERIC
+void kasan_init_cache_meta(struct kmem_cache *cache, unsigned int *size);
+void kasan_init_object_meta(struct kmem_cache *cache, const void *object);
+struct kasan_alloc_meta *kasan_get_alloc_meta(struct kmem_cache *cache,
+						const void *object);
+struct kasan_free_meta *kasan_get_free_meta(struct kmem_cache *cache,
+						const void *object);
+#else
+static inline void kasan_init_cache_meta(struct kmem_cache *cache, unsigned int *size) { }
+static inline void kasan_init_object_meta(struct kmem_cache *cache, const void *object) { }
+#endif
+
+depot_stack_handle_t kasan_save_stack(gfp_t flags, bool can_alloc);
+void kasan_set_track(struct kasan_track *track, gfp_t flags);
+void kasan_save_alloc_info(struct kmem_cache *cache, void *object, gfp_t flags);
+void kasan_save_free_info(struct kmem_cache *cache, void *object);
+
+#if defined(CONFIG_KASAN_GENERIC) && \
+	(defined(CONFIG_SLAB) || defined(CONFIG_SLUB))
+bool kasan_quarantine_put(struct kmem_cache *cache, void *object);
+void kasan_quarantine_reduce(void);
+void kasan_quarantine_remove_cache(struct kmem_cache *cache);
+#else
+static inline bool kasan_quarantine_put(struct kmem_cache *cache, void *object) { return false; }
+static inline void kasan_quarantine_reduce(void) { }
+static inline void kasan_quarantine_remove_cache(struct kmem_cache *cache) { }
+#endif
+
+#ifndef arch_kasan_set_tag
+static inline const void *arch_kasan_set_tag(const void *addr, u8 tag)
+{
+	return addr;
+}
+#endif
+#ifndef arch_kasan_get_tag
+#define arch_kasan_get_tag(addr)	0
+#endif
+
+#define set_tag(addr, tag)	((void *)arch_kasan_set_tag((addr), (tag)))
+#define get_tag(addr)		arch_kasan_get_tag(addr)
+
+#ifdef CONFIG_KASAN_HW_TAGS
+
+#define hw_enable_tag_checks_sync()		arch_enable_tag_checks_sync()
+#define hw_enable_tag_checks_async()		arch_enable_tag_checks_async()
+#define hw_enable_tag_checks_asymm()		arch_enable_tag_checks_asymm()
+#define hw_suppress_tag_checks_start()		arch_suppress_tag_checks_start()
+#define hw_suppress_tag_checks_stop()		arch_suppress_tag_checks_stop()
+#define hw_force_async_tag_fault()		arch_force_async_tag_fault()
+#define hw_get_random_tag()			arch_get_random_tag()
+#define hw_get_mem_tag(addr)			arch_get_mem_tag(addr)
+#define hw_set_mem_tag_range(addr, size, tag, init) \
+			arch_set_mem_tag_range((addr), (size), (tag), (init))
+
+void kasan_enable_hw_tags(void);
+
+#else /* CONFIG_KASAN_HW_TAGS */
+
+static inline void kasan_enable_hw_tags(void) { }
+
+#endif /* CONFIG_KASAN_HW_TAGS */
+
+#if defined(CONFIG_KASAN_SW_TAGS) || defined(CONFIG_KASAN_HW_TAGS)
+void __init kasan_init_tags(void);
+#endif /* CONFIG_KASAN_SW_TAGS || CONFIG_KASAN_HW_TAGS */
+
+#if defined(CONFIG_KASAN_HW_TAGS) && IS_ENABLED(CONFIG_KASAN_KUNIT_TEST)
+
+void kasan_force_async_fault(void);
+
+#else /* CONFIG_KASAN_HW_TAGS && CONFIG_KASAN_KUNIT_TEST */
+
+static inline void kasan_force_async_fault(void) { }
+
+#endif /* CONFIG_KASAN_HW_TAGS && CONFIG_KASAN_KUNIT_TEST */
+
+#ifdef CONFIG_KASAN_SW_TAGS
+u8 kasan_random_tag(void);
+#elif defined(CONFIG_KASAN_HW_TAGS)
+static inline u8 kasan_random_tag(void) { return hw_get_random_tag(); }
+#else
+static inline u8 kasan_random_tag(void) { return 0; }
+#endif
+
+#ifdef CONFIG_KASAN_HW_TAGS
+
+static inline void kasan_poison(const void *addr, size_t size, u8 value, bool init)
+{
+	addr = kasan_reset_tag(addr);
+
+	/* Skip KFENCE memory if called explicitly outside of sl*b. */
+	if (is_kfence_address(addr))
+		return;
+
+	if (WARN_ON((unsigned long)addr & KASAN_GRANULE_MASK))
+		return;
+	if (WARN_ON(size & KASAN_GRANULE_MASK))
+		return;
+
+	hw_set_mem_tag_range((void *)addr, size, value, init);
+}
+
+static inline void kasan_unpoison(const void *addr, size_t size, bool init)
+{
+	u8 tag = get_tag(addr);
+
+	addr = kasan_reset_tag(addr);
+
+	/* Skip KFENCE memory if called explicitly outside of sl*b. */
+	if (is_kfence_address(addr))
+		return;
+
+	if (WARN_ON((unsigned long)addr & KASAN_GRANULE_MASK))
+		return;
+	size = round_up(size, KASAN_GRANULE_SIZE);
+
+	hw_set_mem_tag_range((void *)addr, size, tag, init);
+}
+
+static inline bool kasan_byte_accessible(const void *addr)
+{
+	u8 ptr_tag = get_tag(addr);
+	u8 mem_tag = hw_get_mem_tag((void *)addr);
+
+	return ptr_tag == KASAN_TAG_KERNEL || ptr_tag == mem_tag;
+}
+
+#else /* CONFIG_KASAN_HW_TAGS */
+
+/**
+ * kasan_poison - mark the memory range as inaccessible
+ * @addr - range start address, must be aligned to KASAN_GRANULE_SIZE
+ * @size - range size, must be aligned to KASAN_GRANULE_SIZE
+ * @value - value that's written to metadata for the range
+ * @init - whether to initialize the memory range (only for hardware tag-based)
+ *
+ * The size gets aligned to KASAN_GRANULE_SIZE before marking the range.
+ */
+void kasan_poison(const void *addr, size_t size, u8 value, bool init);
+
+/**
+ * kasan_unpoison - mark the memory range as accessible
+ * @addr - range start address, must be aligned to KASAN_GRANULE_SIZE
+ * @size - range size, can be unaligned
+ * @init - whether to initialize the memory range (only for hardware tag-based)
+ *
+ * For the tag-based modes, the @size gets aligned to KASAN_GRANULE_SIZE before
+ * marking the range.
+ * For the generic mode, the last granule of the memory range gets partially
+ * unpoisoned based on the @size.
+ */
+void kasan_unpoison(const void *addr, size_t size, bool init);
+
+bool kasan_byte_accessible(const void *addr);
+
+#endif /* CONFIG_KASAN_HW_TAGS */
+
+#ifdef CONFIG_KASAN_GENERIC
+
+/**
+ * kasan_poison_last_granule - mark the last granule of the memory range as
+ * inaccessible
+ * @addr - range start address, must be aligned to KASAN_GRANULE_SIZE
+ * @size - range size
+ *
+ * This function is only available for the generic mode, as it's the only mode
+ * that has partially poisoned memory granules.
+ */
+void kasan_poison_last_granule(const void *address, size_t size);
+
+#else /* CONFIG_KASAN_GENERIC */
+
+static inline void kasan_poison_last_granule(const void *address, size_t size) { }
+
+#endif /* CONFIG_KASAN_GENERIC */
+
+#ifndef kasan_arch_is_ready
+static inline bool kasan_arch_is_ready(void)	{ return true; }
+#elif !defined(CONFIG_KASAN_GENERIC) || !defined(CONFIG_KASAN_OUTLINE)
+#error kasan_arch_is_ready only works in KASAN generic outline mode!
+#endif
+
+#if IS_ENABLED(CONFIG_KASAN_KUNIT_TEST)
+
+void kasan_kunit_test_suite_start(void);
+void kasan_kunit_test_suite_end(void);
+
+#else /* CONFIG_KASAN_KUNIT_TEST */
+
+static inline void kasan_kunit_test_suite_start(void) { }
+static inline void kasan_kunit_test_suite_end(void) { }
+
+#endif /* CONFIG_KASAN_KUNIT_TEST */
+
+#if IS_ENABLED(CONFIG_KASAN_KUNIT_TEST) || IS_ENABLED(CONFIG_KASAN_MODULE_TEST)
+
+bool kasan_save_enable_multi_shot(void);
+void kasan_restore_multi_shot(bool enabled);
+
+#endif
+
+/*
+ * Exported functions for interfaces called from assembly or from generated
+ * code. Declared here to avoid warnings about missing declarations.
+ */
+
+asmlinkage void kasan_unpoison_task_stack_below(const void *watermark);
+void __asan_register_globals(void *globals, ssize_t size);
+void __asan_unregister_globals(void *globals, ssize_t size);
+void __asan_handle_no_return(void);
+void __asan_alloca_poison(void *, ssize_t size);
+void __asan_allocas_unpoison(void *stack_top, ssize_t stack_bottom);
+
+void __asan_load1(void *);
+void __asan_store1(void *);
+void __asan_load2(void *);
+void __asan_store2(void *);
+void __asan_load4(void *);
+void __asan_store4(void *);
+void __asan_load8(void *);
+void __asan_store8(void *);
+void __asan_load16(void *);
+void __asan_store16(void *);
+void __asan_loadN(void *, ssize_t size);
+void __asan_storeN(void *, ssize_t size);
+
+void __asan_load1_noabort(void *);
+void __asan_store1_noabort(void *);
+void __asan_load2_noabort(void *);
+void __asan_store2_noabort(void *);
+void __asan_load4_noabort(void *);
+void __asan_store4_noabort(void *);
+void __asan_load8_noabort(void *);
+void __asan_store8_noabort(void *);
+void __asan_load16_noabort(void *);
+void __asan_store16_noabort(void *);
+void __asan_loadN_noabort(void *, ssize_t size);
+void __asan_storeN_noabort(void *, ssize_t size);
+
+void __asan_report_load1_noabort(void *);
+void __asan_report_store1_noabort(void *);
+void __asan_report_load2_noabort(void *);
+void __asan_report_store2_noabort(void *);
+void __asan_report_load4_noabort(void *);
+void __asan_report_store4_noabort(void *);
+void __asan_report_load8_noabort(void *);
+void __asan_report_store8_noabort(void *);
+void __asan_report_load16_noabort(void *);
+void __asan_report_store16_noabort(void *);
+void __asan_report_load_n_noabort(void *, ssize_t size);
+void __asan_report_store_n_noabort(void *, ssize_t size);
+
+void __asan_set_shadow_00(const void *addr, ssize_t size);
+void __asan_set_shadow_f1(const void *addr, ssize_t size);
+void __asan_set_shadow_f2(const void *addr, ssize_t size);
+void __asan_set_shadow_f3(const void *addr, ssize_t size);
+void __asan_set_shadow_f5(const void *addr, ssize_t size);
+void __asan_set_shadow_f8(const void *addr, ssize_t size);
+
+void *__asan_memset(void *addr, int c, ssize_t len);
+void *__asan_memmove(void *dest, const void *src, ssize_t len);
+void *__asan_memcpy(void *dest, const void *src, ssize_t len);
+
+void __hwasan_load1_noabort(void *);
+void __hwasan_store1_noabort(void *);
+void __hwasan_load2_noabort(void *);
+void __hwasan_store2_noabort(void *);
+void __hwasan_load4_noabort(void *);
+void __hwasan_store4_noabort(void *);
+void __hwasan_load8_noabort(void *);
+void __hwasan_store8_noabort(void *);
+void __hwasan_load16_noabort(void *);
+void __hwasan_store16_noabort(void *);
+void __hwasan_loadN_noabort(void *, ssize_t size);
+void __hwasan_storeN_noabort(void *, ssize_t size);
+
+void __hwasan_tag_memory(void *, u8 tag, ssize_t size);
+
+void *__hwasan_memset(void *addr, int c, ssize_t len);
+void *__hwasan_memmove(void *dest, const void *src, ssize_t len);
+void *__hwasan_memcpy(void *dest, const void *src, ssize_t len);
+
+void kasan_tag_mismatch(void *addr, unsigned long access_info,
+			unsigned long ret_ip);
+
+#endif /* __MM_KASAN_KASAN_H */