Messages in this thread Patch in this message | | | From | andrey.konovalov@linux ... | Subject | [PATCH 09/32] kasan: clear metadata functions for tag-based modes | Date | Mon, 13 Jun 2022 22:14:00 +0200 |
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From: Andrey Konovalov <andreyknvl@google.com>
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.
Signed-off-by: Andrey Konovalov <andreyknvl@google.com> --- mm/kasan/tags.c | 33 ++------------------------------- 1 file 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; } -- 2.25.1
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