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| author | Matthew Wilcox (Oracle) <willy@infradead.org> | 2021-10-04 14:46:46 +0100 |
|---|---|---|
| committer | Vlastimil Babka <vbabka@suse.cz> | 2022-01-06 12:26:14 +0100 |
| commit | 6e48a966dfd18987fec9385566a67d36e2b5fc11 (patch) | |
| tree | 86563a5541c93ba5be6ba7963d2e58ada19ebd82 /include/linux/kasan.h | |
| parent | 50757018b4c9b02dbf7fcc0514e0fc45b8689c62 (diff) | |
| download | linux-stable-6e48a966dfd18987fec9385566a67d36e2b5fc11.tar.gz linux-stable-6e48a966dfd18987fec9385566a67d36e2b5fc11.tar.bz2 linux-stable-6e48a966dfd18987fec9385566a67d36e2b5fc11.zip | |
mm/kasan: Convert to struct folio and struct slab
KASAN accesses some slab related struct page fields so we need to
convert it to struct slab. Some places are a bit simplified thanks to
kasan_addr_to_slab() encapsulating the PageSlab flag check through
virt_to_slab(). When resolving object address to either a real slab or
a large kmalloc, use struct folio as the intermediate type for testing
the slab flag to avoid unnecessary implicit compound_head().
[ vbabka@suse.cz: use struct folio, adjust to differences in previous
patches ]
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Reviewed-by: Andrey Konovalov <andreyknvl@gmail.com>
Reviewed-by: Roman Gushchin <guro@fb.com>
Tested-by: Hyeongogn Yoo <42.hyeyoo@gmail.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Andrey Konovalov <andreyknvl@gmail.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: <kasan-dev@googlegroups.com>
Diffstat (limited to 'include/linux/kasan.h')
| -rw-r--r-- | include/linux/kasan.h | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/include/linux/kasan.h b/include/linux/kasan.h index d8783b682669..fb78108d694e 100644 --- a/include/linux/kasan.h +++ b/include/linux/kasan.h @@ -9,6 +9,7 @@ struct kmem_cache; struct page; +struct slab; struct vm_struct; struct task_struct; @@ -193,11 +194,11 @@ static __always_inline size_t kasan_metadata_size(struct kmem_cache *cache) return 0; } -void __kasan_poison_slab(struct page *page); -static __always_inline void kasan_poison_slab(struct page *page) +void __kasan_poison_slab(struct slab *slab); +static __always_inline void kasan_poison_slab(struct slab *slab) { if (kasan_enabled()) - __kasan_poison_slab(page); + __kasan_poison_slab(slab); } void __kasan_unpoison_object_data(struct kmem_cache *cache, void *object); @@ -322,7 +323,7 @@ static inline void kasan_cache_create(struct kmem_cache *cache, slab_flags_t *flags) {} static inline void kasan_cache_create_kmalloc(struct kmem_cache *cache) {} static inline size_t kasan_metadata_size(struct kmem_cache *cache) { return 0; } -static inline void kasan_poison_slab(struct page *page) {} +static inline void kasan_poison_slab(struct slab *slab) {} static inline void kasan_unpoison_object_data(struct kmem_cache *cache, void *object) {} static inline void kasan_poison_object_data(struct kmem_cache *cache, |