diff options
| author | Andrey Konovalov <andreyknvl@google.com> | 2022-09-05 23:05:24 +0200 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2022-10-03 14:02:57 -0700 |
| commit | 74984e79071aafd528f03b8418657c05011b94f3 (patch) | |
| tree | 9def8764c1451f10ef83fe571fbd1fe8b20f852f /mm/kasan | |
| parent | 836daba099472baaa8b6a57772e8bb2d55f1f9d7 (diff) | |
kasan: clear metadata functions for tag-based modes
Remove implementations of the metadata-related functions for the tag-based
modes.
The following patches in the series will provide alternative
implementations.
As of this patch, the tag-based modes no longer collect alloc and free
stack traces. This functionality will be restored later in the series.
Link: https://lkml.kernel.org/r/470fbe5d15e8015092e76e395de354be18ccceab.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')
| -rw-r--r-- | mm/kasan/tags.c | 33 |
1 files changed, 2 insertions, 31 deletions
diff --git a/mm/kasan/tags.c b/mm/kasan/tags.c index 2e200969a4b8..f11c89505c77 100644 --- a/mm/kasan/tags.c +++ b/mm/kasan/tags.c @@ -19,54 +19,25 @@ void kasan_init_object_meta(struct kmem_cache *cache, const void *object) { - struct kasan_alloc_meta *alloc_meta; - - alloc_meta = kasan_get_alloc_meta(cache, object); - if (alloc_meta) - __memset(alloc_meta, 0, sizeof(*alloc_meta)); } void kasan_save_alloc_info(struct kmem_cache *cache, void *object, gfp_t flags) { - struct kasan_alloc_meta *alloc_meta; - - alloc_meta = kasan_get_alloc_meta(cache, object); - if (alloc_meta) - kasan_set_track(&alloc_meta->alloc_track, flags); } void kasan_save_free_info(struct kmem_cache *cache, void *object, u8 tag) { - struct kasan_alloc_meta *alloc_meta; - - alloc_meta = kasan_get_alloc_meta(cache, object); - if (!alloc_meta) - return; - - kasan_set_track(&alloc_meta->free_track, GFP_NOWAIT); } 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; + return NULL; } struct kasan_track *kasan_get_free_track(struct kmem_cache *cache, void *object, u8 tag) { - struct kasan_alloc_meta *alloc_meta; - - alloc_meta = kasan_get_alloc_meta(cache, object); - if (!alloc_meta) - return NULL; - - return &alloc_meta->free_track; + return NULL; } |