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| author |   Andrey Konovalov <andreyknvl@google.com> | 2022-09-05 23:05:34 +0200 |
|---|---|---|
| committer |   Andrew Morton <akpm@linux-foundation.org> | 2022-10-03 14:02:59 -0700 |
| commit | 6b07434980a1926780cb5c5644fb198fb9c3997b (patch) | |
| tree | fb79715f7f20785308a9ffe2f6b299601dabb7d5 /mm/kasan/common.c | |
| parent | kasan: only define kasan_cache_create for Generic mode (diff) | |
| download | linux-dev-6b07434980a1926780cb5c5644fb198fb9c3997b.tar.xz linux-dev-6b07434980a1926780cb5c5644fb198fb9c3997b.zip | |
kasan: pass tagged pointers to kasan_save_alloc/free_info
Pass tagged pointers to kasan_save_alloc/free_info().
This is a preparatory patch to simplify other changes in the series.
Link: https://lkml.kernel.org/r/d5bc48cfcf0dca8269dc3ed863047e4d4d2030f1.1662411799.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 | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/mm/kasan/common.c b/mm/kasan/common.c index 8efa63190951..f8e16a242197 100644 --- a/mm/kasan/common.c +++ b/mm/kasan/common.c @@ -193,13 +193,11 @@ void * __must_check __kasan_init_slab_obj(struct kmem_cache *cache, static inline bool ____kasan_slab_free(struct kmem_cache *cache, void *object, unsigned long ip, bool quarantine, bool init) { - u8 tag; void *tagged_object; if (!kasan_arch_is_ready()) return false; - tag = get_tag(object); tagged_object = object; object = kasan_reset_tag(object); @@ -228,7 +226,7 @@ static inline bool ____kasan_slab_free(struct kmem_cache *cache, void *object, return false; if (kasan_stack_collection_enabled()) - kasan_save_free_info(cache, object, tag); + kasan_save_free_info(cache, tagged_object); return kasan_quarantine_put(cache, object); } @@ -317,7 +315,7 @@ void * __must_check __kasan_slab_alloc(struct kmem_cache *cache, /* Save alloc info (if possible) for non-kmalloc() allocations. */ if (kasan_stack_collection_enabled() && !cache->kasan_info.is_kmalloc) - kasan_save_alloc_info(cache, (void *)object, flags); + kasan_save_alloc_info(cache, tagged_object, flags); return tagged_object; } |