diff options
| author | Andrey Konovalov <[email protected]> | 2021-02-25 17:20:07 -0800 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2021-02-26 09:41:03 -0800 |
| commit | df54b383124cf3e09f66644ee8a2eb977e8c7f26 (patch) | |
| tree | 4787c3f94a55d64f21ee6a38f25948a55bfec7fc | |
| parent | 43a219cbe5a46ec3f6a1874bb2cb2fd4de8322cc (diff) | |
kasan: clean up setting free info in kasan_slab_free
Put kasan_stack_collection_enabled() check and kasan_set_free_info() calls
next to each other.
The way this was previously implemented was a minor optimization that
relied of the the fact that kasan_stack_collection_enabled() is always
true for generic KASAN. The confusion that this brings outweights saving
a few instructions.
Link: https://lkml.kernel.org/r/f838e249be5ab5810bf54a36ef5072cfd80e2da7.1612546384.git.andreyknvl@google.com
Signed-off-by: Andrey Konovalov <[email protected]>
Reviewed-by: Marco Elver <[email protected]>
Cc: Alexander Potapenko <[email protected]>
Cc: Andrey Ryabinin <[email protected]>
Cc: Branislav Rankov <[email protected]>
Cc: Catalin Marinas <[email protected]>
Cc: Dmitry Vyukov <[email protected]>
Cc: Evgenii Stepanov <[email protected]>
Cc: Kevin Brodsky <[email protected]>
Cc: Peter Collingbourne <[email protected]>
Cc: Vincenzo Frascino <[email protected]>
Cc: Will Deacon <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
| -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 dcdc92948364..48d51daeda95 100644 --- a/mm/kasan/common.c +++ b/mm/kasan/common.c @@ -350,13 +350,11 @@ static bool ____kasan_slab_free(struct kmem_cache *cache, void *object, kasan_poison(object, cache->object_size, KASAN_KMALLOC_FREE); - if (!kasan_stack_collection_enabled()) - return false; - if ((IS_ENABLED(CONFIG_KASAN_GENERIC) && !quarantine)) return false; - kasan_set_free_info(cache, object, tag); + if (kasan_stack_collection_enabled()) + kasan_set_free_info(cache, object, tag); return kasan_quarantine_put(cache, object); } |