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kasan: remove __kasan_save_free_info wrapper

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Patch series "kasan: cleanups for kasan_enabled() checks".

This patch series is the continuation of [1] the previous discussion
related to the KASAN internal refactoring.

Here we remove kasan_enabled() checks which are duplicated by higher
callers.  These checks deduplication are also related to the separate
patch series [2].


This patch (of 2):

We don't need a kasan_enabled() check in kasan_save_free_info() at all. 
Both the higher level paths (kasan_slab_free and
kasan_mempool_poison_object) already contain this check.  Therefore,
remove the __wrapper.

Link: https://lkml.kernel.org/r/20251009155403.1379150-1-snovitoll@gmail.com
Link: https://lkml.kernel.org/r/20251009155403.1379150-2-snovitoll@gmail.com
Link: https://lore.kernel.org/all/CA+fCnZce3AR+pUesbDkKMtMJ+iR8eDrcjFTbVpAcwjBoZ=gJnQ@mail.gmail.com/ [1]
Link: https://lore.kernel.org/all/aNTfPjS2buXMI46D@MiWiFi-R3L-srv/ [2]
Signed-off-by: Sabyrzhan Tasbolatov <snovitoll@gmail.com>
Reviewed-by: Andrey Konovalov <andreyknvl@gmail.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Baoquan He <bhe@redhat.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Dmitriy Vyukov <dvyukov@google.com>
Cc: "Ritesh Harjani (IBM)" <ritesh.list@gmail.com>
Cc: Vincenzo Frascino <vincenzo.frascino@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Sabyrzhan Tasbolatov
2025-10-09 20:54:02 +05:00
committed by Andrew Morton
parent cc22b99785
commit 27109f5703
3 changed files with 3 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
mm/kasan/generic.c
View File

@@ -573,7 +573,7 @@ void kasan_save_alloc_info(struct kmem_cache *cache, void *object, gfp_t flags)
kasan_save_track(&alloc_meta->alloc_track, flags);
}
void __kasan_save_free_info(struct kmem_cache *cache, void *object)
void kasan_save_free_info(struct kmem_cache *cache, void *object)
{
struct kasan_free_meta *free_meta;

7
mm/kasan/kasan.h
View File

@@ -399,12 +399,7 @@ void kasan_set_track(struct kasan_track *track, depot_stack_handle_t stack);
void kasan_save_track(struct kasan_track *track, gfp_t flags);
void kasan_save_alloc_info(struct kmem_cache *cache, void *object, gfp_t flags);
void __kasan_save_free_info(struct kmem_cache *cache, void *object);
static inline void kasan_save_free_info(struct kmem_cache *cache, void *object)
{
if (kasan_enabled())
__kasan_save_free_info(cache, object);
}
void kasan_save_free_info(struct kmem_cache *cache, void *object);
#ifdef CONFIG_KASAN_GENERIC
bool kasan_quarantine_put(struct kmem_cache *cache, void *object);

2
mm/kasan/tags.c
View File

@@ -142,7 +142,7 @@ void kasan_save_alloc_info(struct kmem_cache *cache, void *object, gfp_t flags)
save_stack_info(cache, object, flags, false);
}
void __kasan_save_free_info(struct kmem_cache *cache, void *object)
void kasan_save_free_info(struct kmem_cache *cache, void *object)
{
save_stack_info(cache, object, 0, true);
}