#ifndef __MM_KASAN_KASAN_H #define __MM_KASAN_KASAN_H #include #include #define KASAN_SHADOW_SCALE_SIZE (1UL << KASAN_SHADOW_SCALE_SHIFT) #define KASAN_SHADOW_MASK (KASAN_SHADOW_SCALE_SIZE - 1) #define KASAN_FREE_PAGE 0xFF /* page was freed */ #define KASAN_PAGE_REDZONE 0xFE /* redzone for kmalloc_large allocations */ #define KASAN_KMALLOC_REDZONE 0xFC /* redzone inside slub object */ #define KASAN_KMALLOC_FREE 0xFB /* object was freed (kmem_cache_free/kfree) */ #define KASAN_GLOBAL_REDZONE 0xFA /* redzone for global variable */ /* * Stack redzone shadow values * (Those are compiler's ABI, don't change them) */ #define KASAN_STACK_LEFT 0xF1 #define KASAN_STACK_MID 0xF2 #define KASAN_STACK_RIGHT 0xF3 #define KASAN_STACK_PARTIAL 0xF4 #define KASAN_USE_AFTER_SCOPE 0xF8 /* Don't break randconfig/all*config builds */ #ifndef KASAN_ABI_VERSION #define KASAN_ABI_VERSION 1 #endif struct kasan_access_info { const void *access_addr; const void *first_bad_addr; size_t access_size; bool is_write; unsigned long ip; }; /* The layout of struct dictated by compiler */ struct kasan_source_location { const char *filename; int line_no; int column_no; }; /* The layout of struct dictated by compiler */ 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 red zone. 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 needed for C++ */ #if KASAN_ABI_VERSION >= 4 struct kasan_source_location *location; #endif #if KASAN_ABI_VERSION >= 5 char *odr_indicator; #endif }; /** * Structures to keep alloc and free tracks * */ #define KASAN_STACK_DEPTH 64 struct kasan_track { u32 pid; depot_stack_handle_t stack; }; struct kasan_alloc_meta { struct kasan_track alloc_track; struct kasan_track free_track; }; struct qlist_node { struct qlist_node *next; }; struct kasan_free_meta { /* This field is used while the object is in the quarantine. * Otherwise it might be used for the allocator freelist. */ struct qlist_node quarantine_link; }; struct kasan_alloc_meta *get_alloc_info(struct kmem_cache *cache, const void *object); struct kasan_free_meta *get_free_info(struct kmem_cache *cache, const void *object); 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); } static inline bool kasan_report_enabled(void) { return !current->kasan_depth; } void kasan_report(unsigned long addr, size_t size, bool is_write, unsigned long ip); void kasan_report_double_free(struct kmem_cache *cache, void *object, s8 shadow); #if defined(CONFIG_SLAB) || defined(CONFIG_SLUB) void quarantine_put(struct kasan_free_meta *info, struct kmem_cache *cache); void quarantine_reduce(void); void quarantine_remove_cache(struct kmem_cache *cache); #else static inline void quarantine_put(struct kasan_free_meta *info, struct kmem_cache *cache) { } static inline void quarantine_reduce(void) { } static inline void quarantine_remove_cache(struct kmem_cache *cache) { } #endif #endif '>1space:mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2017-02-08 09:56:15 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2017-02-08 09:56:15 -0800
commit23fbe2cdc1de80120cf9ccd478ac57c3a3a0764b (patch)
tree4aff32d5f2f6fe2f54028bfd4d1b66fdd2f8d281 /net/llc/llc_if.c
parent926af6273fc683cd98cd0ce7bf0d04a02eed6742 (diff)
parenteeeefd41843218c55a8782a6920f044d9bf6207a (diff)
Merge branch 'for-linus' of git://git.kernel.dk/linux-block
Pull block fix from Jens Axboe: "A single fix that should go into 4.10, fixing a regression on some devices with the WRITE_SAME command" * 'for-linus' of git://git.kernel.dk/linux-block: block: don't try Write Same from __blkdev_issue_zeroout
Diffstat (limited to 'net/llc/llc_if.c')