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| author | Andrey Konovalov <andreyknvl@google.com> | 2022-09-05 23:05:25 +0200 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2022-10-03 23:02:57 +0200 |
| commit | 2f3568017268fc34eb0b6b4b3163c0f2e619fde6 (patch) | |
| tree | f25647b8219bc3f90314f19571c55e0b16d78eb6 /mm/kasan/common.c | |
| parent | kasan: clear metadata functions for tag-based modes (diff) | |
| download | linux-2f3568017268fc34eb0b6b4b3163c0f2e619fde6.tar.xz linux-2f3568017268fc34eb0b6b4b3163c0f2e619fde6.zip | |
kasan: move kasan_get_*_meta to generic.c
Move the implementations of kasan_get_alloc/free_meta() to generic.c, as
the common KASAN code does not use these functions anymore.
Also drop kasan_reset_tag() from the implementation, as the Generic mode
does not tag pointers.
Link: https://lkml.kernel.org/r/ffcfc0ad654d78a2ef4ca054c943ddb4e5ca477b.1662411799.git.andreyknvl@google.com
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Reviewed-by: Marco Elver <elver@google.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Evgenii Stepanov <eugenis@google.com>
Cc: Peter Collingbourne <pcc@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/kasan/common.c')
| -rw-r--r-- | mm/kasan/common.c | 19 |
1 files changed, 0 insertions, 19 deletions
diff --git a/mm/kasan/common.c b/mm/kasan/common.c index 18107675a7fe..19ddc0ed0e7b 100644 --- a/mm/kasan/common.c +++ b/mm/kasan/common.c @@ -229,25 +229,6 @@ size_t __kasan_metadata_size(struct kmem_cache *cache) sizeof(struct kasan_free_meta) : 0); } -struct kasan_alloc_meta *kasan_get_alloc_meta(struct kmem_cache *cache, - const void *object) -{ - if (!cache->kasan_info.alloc_meta_offset) - return NULL; - return kasan_reset_tag(object) + cache->kasan_info.alloc_meta_offset; -} - -#ifdef CONFIG_KASAN_GENERIC -struct kasan_free_meta *kasan_get_free_meta(struct kmem_cache *cache, - const void *object) -{ - BUILD_BUG_ON(sizeof(struct kasan_free_meta) > 32); - if (cache->kasan_info.free_meta_offset == KASAN_NO_FREE_META) - return NULL; - return kasan_reset_tag(object) + cache->kasan_info.free_meta_offset; -} -#endif - void __kasan_poison_slab(struct slab *slab) { struct page *page = slab_page(slab); |