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Code Issues Releases Wiki Activity

kasan: move kasan_get_alloc/free_track definitions

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Move the definitions of kasan_get_alloc/free_track() to report_*.c, as
they belong with other the reporting code.

Link: https://lkml.kernel.org/r/0cb15423956889b3905a0174b58782633bbbd72e.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>
This commit is contained in:
Andrey Konovalov 2022-09-05 23:05:35 +02:00 committed by Andrew Morton
parent 6b07434980
commit b89933e9a5
4 changed files with 33 additions and 33 deletions
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21
mm/kasan/generic.c
View file

@ -512,24 +512,3 @@ void kasan_save_free_info(struct kmem_cache *cache, void *object)
/* The object was freed and has free track set. */
*(u8 *)kasan_mem_to_shadow(object) = KASAN_SLAB_FREETRACK;
}
struct kasan_track *kasan_get_alloc_track(struct kmem_cache *cache,
void *object)
{
struct kasan_alloc_meta *alloc_meta;
alloc_meta = kasan_get_alloc_meta(cache, object);
if (!alloc_meta)
return NULL;
return &alloc_meta->alloc_track;
}
struct kasan_track *kasan_get_free_track(struct kmem_cache *cache,
void *object, u8 tag)
{
if (*(u8 *)kasan_mem_to_shadow(object) != KASAN_SLAB_FREETRACK)
return NULL;
/* Free meta must be present with KASAN_SLAB_FREETRACK. */
return &kasan_get_free_meta(cache, object)->free_track;
}

21
mm/kasan/report_generic.c
View file

@ -127,6 +127,27 @@ const char *kasan_get_bug_type(struct kasan_report_info *info)
return get_wild_bug_type(info);
}
struct kasan_track *kasan_get_alloc_track(struct kmem_cache *cache,
void *object)
{
struct kasan_alloc_meta *alloc_meta;
alloc_meta = kasan_get_alloc_meta(cache, object);
if (!alloc_meta)
return NULL;
return &alloc_meta->alloc_track;
}
struct kasan_track *kasan_get_free_track(struct kmem_cache *cache,
void *object, u8 tag)
{
if (*(u8 *)kasan_mem_to_shadow(object) != KASAN_SLAB_FREETRACK)
return NULL;
/* Free meta must be present with KASAN_SLAB_FREETRACK. */
return &kasan_get_free_meta(cache, object)->free_track;
}
void kasan_metadata_fetch_row(char *buffer, void *row)
{
memcpy(buffer, kasan_mem_to_shadow(row), META_BYTES_PER_ROW);

12
mm/kasan/report_tags.c
View file

@ -21,3 +21,15 @@ const char *kasan_get_bug_type(struct kasan_report_info *info)
return "invalid-access";
}
struct kasan_track *kasan_get_alloc_track(struct kmem_cache *cache,
void *object)
{
return NULL;
}
struct kasan_track *kasan_get_free_track(struct kmem_cache *cache,
void *object, u8 tag)
{
return NULL;
}

12
mm/kasan/tags.c
View file

@ -24,15 +24,3 @@ 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)
{
}
struct kasan_track *kasan_get_alloc_track(struct kmem_cache *cache,
void *object)
{
return NULL;
}
struct kasan_track *kasan_get_free_track(struct kmem_cache *cache,
void *object, u8 tag)
{
return NULL;
}