From: Andrey Konovalov <andreyknvl@xxxxxxxxxx>
Provide standalone implementations of save_alloc_info() for the Generic
and tag-based modes.
For now, the implementations are the same, but they will diverge later
in the series.
Signed-off-by: Andrey Konovalov <andreyknvl@xxxxxxxxxx>
---
mm/kasan/common.c | 13 ++-----------
mm/kasan/generic.c | 9 +++++++++
mm/kasan/kasan.h | 1 +
mm/kasan/tags.c | 9 +++++++++
4 files changed, 21 insertions(+), 11 deletions(-)
diff --git a/mm/kasan/common.c b/mm/kasan/common.c
index a6107e8375e0..2848c7a2402a 100644
--- a/mm/kasan/common.c
+++ b/mm/kasan/common.c
@@ -423,15 +423,6 @@ void __kasan_slab_free_mempool(void *ptr, unsigned long ip)
}
}
-static void 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 * __must_check __kasan_slab_alloc(struct kmem_cache *cache,
void *object, gfp_t flags, bool init)
{
@@ -462,7 +453,7 @@ void * __must_check __kasan_slab_alloc(struct kmem_cache *cache,
/* Save alloc info (if possible) for non-kmalloc() allocations. */
if (kasan_stack_collection_enabled() && !cache->kasan_info.is_kmalloc)
- save_alloc_info(cache, (void *)object, flags);
+ kasan_save_alloc_info(cache, (void *)object, flags);
return tagged_object;
}
@@ -508,7 +499,7 @@ static inline void *____kasan_kmalloc(struct kmem_cache *cache,
* This also rewrites the alloc info when called from kasan_krealloc().
*/
if (kasan_stack_collection_enabled() && cache->kasan_info.is_kmalloc)
- save_alloc_info(cache, (void *)object, flags);
+ kasan_save_alloc_info(cache, (void *)object, flags);
/* Keep the tag that was set by kasan_slab_alloc(). */
return (void *)object;
diff --git a/mm/kasan/generic.c b/mm/kasan/generic.c
index 03a3770cfeae..98c451a3b01f 100644
--- a/mm/kasan/generic.c
+++ b/mm/kasan/generic.c
@@ -358,6 +358,15 @@ void kasan_record_aux_stack_noalloc(void *addr)
return __kasan_record_aux_stack(addr, false);
}
+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)
{
diff --git a/mm/kasan/kasan.h b/mm/kasan/kasan.h
index 6df8d7b01073..610057e651d2 100644
--- a/mm/kasan/kasan.h
+++ b/mm/kasan/kasan.h
@@ -284,6 +284,7 @@ struct slab *kasan_addr_to_slab(const void *addr);
depot_stack_handle_t kasan_save_stack(gfp_t flags, bool can_alloc);
void kasan_set_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, u8 tag);
struct kasan_track *kasan_get_free_track(struct kmem_cache *cache,
void *object, u8 tag);
diff --git a/mm/kasan/tags.c b/mm/kasan/tags.c
index b453a353bc86..1ba3c8399f72 100644
--- a/mm/kasan/tags.c
+++ b/mm/kasan/tags.c
@@ -17,6 +17,15 @@
#include "kasan.h"
+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)
{
--
2.25.1
