From: andrey.konovalov@linux.dev
To: Marco Elver <elver@google.com>, Alexander Potapenko <glider@google.com>
Cc: Andrey Konovalov <andreyknvl@gmail.com>,
Dmitry Vyukov <dvyukov@google.com>,
Andrey Ryabinin <ryabinin.a.a@gmail.com>,
kasan-dev@googlegroups.com, Peter Collingbourne <pcc@google.com>,
Evgenii Stepanov <eugenis@google.com>,
Florian Mayer <fmayer@google.com>,
Andrew Morton <akpm@linux-foundation.org>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
Andrey Konovalov <andreyknvl@google.com>
Subject: [PATCH mm v2 04/33] kasan: split save_alloc_info implementations
Date: Tue, 19 Jul 2022 02:09:44 +0200 [thread overview]
Message-ID: <891eb09a249af9bc79939b5be0a5076d65a34220.1658189199.git.andreyknvl@google.com> (raw)
In-Reply-To: <cover.1658189199.git.andreyknvl@google.com>
From: Andrey Konovalov <andreyknvl@google.com>
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.
Reviewed-by: Marco Elver <elver@google.com>
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
---
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 a6fd597f73f5..6156c6f0e303 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 bf16a74dc027..d401fb770f67 100644
--- a/mm/kasan/kasan.h
+++ b/mm/kasan/kasan.h
@@ -285,6 +285,7 @@ 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
next prev parent reply other threads:[~2022-07-19 0:10 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-07-19 0:09 [PATCH mm v2 00/33] kasan: switch tag-based modes to stack ring from per-object metadata andrey.konovalov
2022-07-19 0:09 ` [PATCH mm v2 01/33] kasan: check KASAN_NO_FREE_META in __kasan_metadata_size andrey.konovalov
2022-07-19 0:09 ` [PATCH mm v2 02/33] kasan: rename kasan_set_*_info to kasan_save_*_info andrey.konovalov
2022-07-19 0:09 ` [PATCH mm v2 03/33] kasan: move is_kmalloc check out of save_alloc_info andrey.konovalov
2022-07-19 0:09 ` andrey.konovalov [this message]
2022-07-19 0:09 ` [PATCH mm v2 05/33] kasan: drop CONFIG_KASAN_TAGS_IDENTIFY andrey.konovalov
2022-07-19 0:09 ` [PATCH mm v2 06/33] kasan: introduce kasan_print_aux_stacks andrey.konovalov
2022-07-19 0:09 ` [PATCH mm v2 07/33] kasan: introduce kasan_get_alloc_track andrey.konovalov
2022-07-19 0:09 ` [PATCH mm v2 08/33] kasan: introduce kasan_init_object_meta andrey.konovalov
2022-07-19 0:09 ` [PATCH mm v2 09/33] kasan: clear metadata functions for tag-based modes andrey.konovalov
2022-07-19 0:09 ` [PATCH mm v2 10/33] kasan: move kasan_get_*_meta to generic.c andrey.konovalov
2022-07-19 0:09 ` [PATCH mm v2 11/33] kasan: introduce kasan_requires_meta andrey.konovalov
2022-07-19 0:09 ` [PATCH mm v2 12/33] kasan: introduce kasan_init_cache_meta andrey.konovalov
2022-07-19 0:09 ` [PATCH mm v2 13/33] kasan: drop CONFIG_KASAN_GENERIC check from kasan_init_cache_meta andrey.konovalov
2022-07-19 0:09 ` [PATCH mm v2 14/33] kasan: only define kasan_metadata_size for Generic mode andrey.konovalov
2022-07-19 0:09 ` [PATCH mm v2 15/33] kasan: only define kasan_never_merge " andrey.konovalov
2022-07-19 0:09 ` [PATCH mm v2 16/33] kasan: only define metadata offsets " andrey.konovalov
2022-07-19 0:09 ` [PATCH mm v2 17/33] kasan: only define metadata structs " andrey.konovalov
2022-07-19 0:09 ` [PATCH mm v2 18/33] kasan: only define kasan_cache_create " andrey.konovalov
2022-07-19 0:09 ` [PATCH mm v2 19/33] kasan: pass tagged pointers to kasan_save_alloc/free_info andrey.konovalov
2022-07-19 0:10 ` [PATCH mm v2 20/33] kasan: move kasan_get_alloc/free_track definitions andrey.konovalov
2022-07-19 0:10 ` [PATCH mm v2 21/33] kasan: cosmetic changes in report.c andrey.konovalov
2022-07-19 0:10 ` [PATCH mm v2 22/33] kasan: use virt_addr_valid in kasan_addr_to_page/slab andrey.konovalov
2022-07-19 0:10 ` [PATCH mm v2 23/33] kasan: use kasan_addr_to_slab in print_address_description andrey.konovalov
2022-07-19 0:10 ` [PATCH mm v2 24/33] kasan: make kasan_addr_to_page static andrey.konovalov
2022-07-19 0:10 ` [PATCH mm v2 25/33] kasan: simplify print_report andrey.konovalov
2022-07-19 0:10 ` [PATCH mm v2 26/33] kasan: introduce complete_report_info andrey.konovalov
2022-07-19 0:10 ` [PATCH mm v2 27/33] kasan: fill in cache and object in complete_report_info andrey.konovalov
2022-07-19 0:10 ` [PATCH mm v2 28/33] kasan: rework function arguments in report.c andrey.konovalov
2022-07-19 0:10 ` [PATCH mm v2 29/33] kasan: introduce kasan_complete_mode_report_info andrey.konovalov
2022-07-19 0:10 ` [PATCH mm v2 30/33] kasan: implement stack ring for tag-based modes andrey.konovalov
2022-07-19 11:41 ` Marco Elver
2022-07-21 20:41 ` Andrey Konovalov
2022-08-02 20:45 ` Andrey Konovalov
2022-08-03 20:28 ` Marco Elver
2022-09-05 20:40 ` Andrey Konovalov
2022-07-19 0:10 ` [PATCH mm v2 31/33] kasan: support kasan.stacktrace for SW_TAGS andrey.konovalov
2022-07-19 0:10 ` [PATCH mm v2 32/33] kasan: dynamically allocate stack ring entries andrey.konovalov
2022-08-03 20:09 ` Marco Elver
2022-09-05 20:34 ` Andrey Konovalov
2022-07-19 0:10 ` [PATCH mm v2 33/33] kasan: better identify bug types for tag-based modes andrey.konovalov
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