[PATCH RFC 2/8] kasan: rename get_alloc/free_info

From: Andrey Konovalov
Date: Wed Oct 14 2020 - 16:44:56 EST

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Rename get_alloc_info() and get_free_info() to kasan_get_alloc_meta()
and kasan_get_free_meta() to better reflect what those do, and avoid
confusion with kasan_set_free_info().

No functional changes.

Signed-off-by: Andrey Konovalov <andreyknvl@xxxxxxxxxx>
Link: https://linux-review.googlesource.com/id/Ib6e4ba61c8b12112b403d3479a9799ac8fff8de1
---
mm/kasan/common.c | 16 ++++++++--------
mm/kasan/generic.c | 12 ++++++------
mm/kasan/hw_tags.c | 4 ++--
mm/kasan/kasan.h | 8 ++++----
mm/kasan/quarantine.c | 4 ++--
mm/kasan/report.c | 12 ++++++------
mm/kasan/report_sw_tags.c | 2 +-
mm/kasan/sw_tags.c | 4 ++--
8 files changed, 31 insertions(+), 31 deletions(-)

diff --git a/mm/kasan/common.c b/mm/kasan/common.c
index 5712c66c11c1..8fd04415d8f4 100644
--- a/mm/kasan/common.c
+++ b/mm/kasan/common.c
@@ -175,14 +175,14 @@ size_t kasan_metadata_size(struct kmem_cache *cache)
sizeof(struct kasan_free_meta) : 0);
}

-struct kasan_alloc_meta *get_alloc_info(struct kmem_cache *cache,
- const void *object)
+struct kasan_alloc_meta *kasan_get_alloc_meta(struct kmem_cache *cache,
+ const void *object)
{
return (void *)reset_tag(object) + cache->kasan_info.alloc_meta_offset;
}

-struct kasan_free_meta *get_free_info(struct kmem_cache *cache,
- const void *object)
+struct kasan_free_meta *kasan_get_free_meta(struct kmem_cache *cache,
+ const void *object)
{
BUILD_BUG_ON(sizeof(struct kasan_free_meta) > 32);
return (void *)reset_tag(object) + cache->kasan_info.free_meta_offset;
@@ -259,13 +259,13 @@ static u8 assign_tag(struct kmem_cache *cache, const void *object,
void * __must_check kasan_init_slab_obj(struct kmem_cache *cache,
const void *object)
{
- struct kasan_alloc_meta *alloc_info;
+ struct kasan_alloc_meta *alloc_meta;

if (!(cache->flags & SLAB_KASAN))
return (void *)object;

- alloc_info = get_alloc_info(cache, object);
- __memset(alloc_info, 0, sizeof(*alloc_info));
+ alloc_meta = kasan_get_alloc_meta(cache, object);
+ __memset(alloc_meta, 0, sizeof(*alloc_meta));

if (IS_ENABLED(CONFIG_KASAN_SW_TAGS) || IS_ENABLED(CONFIG_KASAN_HW_TAGS))
object = set_tag(object, assign_tag(cache, object, true, false));
@@ -345,7 +345,7 @@ static void *__kasan_kmalloc(struct kmem_cache *cache, const void *object,
KASAN_KMALLOC_REDZONE);

if (cache->flags & SLAB_KASAN)
- kasan_set_track(&get_alloc_info(cache, object)->alloc_track, flags);
+ kasan_set_track(&kasan_get_alloc_meta(cache, object)->alloc_track, flags);

return set_tag(object, tag);
}
diff --git a/mm/kasan/generic.c b/mm/kasan/generic.c
index e1af3b6c53b8..de6b3f03a023 100644
--- a/mm/kasan/generic.c
+++ b/mm/kasan/generic.c
@@ -331,7 +331,7 @@ void kasan_record_aux_stack(void *addr)
{
struct page *page = kasan_addr_to_page(addr);
struct kmem_cache *cache;
- struct kasan_alloc_meta *alloc_info;
+ struct kasan_alloc_meta *alloc_meta;
void *object;

if (!(page && PageSlab(page)))
@@ -339,13 +339,13 @@ void kasan_record_aux_stack(void *addr)

cache = page->slab_cache;
object = nearest_obj(cache, page, addr);
- alloc_info = get_alloc_info(cache, object);
+ alloc_meta = kasan_get_alloc_meta(cache, object);

/*
* record the last two call_rcu() call stacks.
*/
- alloc_info->aux_stack[1] = alloc_info->aux_stack[0];
- alloc_info->aux_stack[0] = kasan_save_stack(GFP_NOWAIT);
+ alloc_meta->aux_stack[1] = alloc_meta->aux_stack[0];
+ alloc_meta->aux_stack[0] = kasan_save_stack(GFP_NOWAIT);
}

void kasan_set_free_info(struct kmem_cache *cache,
@@ -353,7 +353,7 @@ void kasan_set_free_info(struct kmem_cache *cache,
{
struct kasan_free_meta *free_meta;

- free_meta = get_free_info(cache, object);
+ free_meta = kasan_get_free_meta(cache, object);
kasan_set_track(&free_meta->free_track, GFP_NOWAIT);

/*
@@ -367,5 +367,5 @@ struct kasan_track *kasan_get_free_track(struct kmem_cache *cache,
{
if (*(u8 *)kasan_mem_to_shadow(object) != KASAN_KMALLOC_FREETRACK)
return NULL;
- return &get_free_info(cache, object)->free_track;
+ return &kasan_get_free_meta(cache, object)->free_track;
}
diff --git a/mm/kasan/hw_tags.c b/mm/kasan/hw_tags.c
index 7f0568df2a93..2a38885014e3 100644
--- a/mm/kasan/hw_tags.c
+++ b/mm/kasan/hw_tags.c
@@ -56,7 +56,7 @@ void kasan_set_free_info(struct kmem_cache *cache,
{
struct kasan_alloc_meta *alloc_meta;

- alloc_meta = get_alloc_info(cache, object);
+ alloc_meta = kasan_get_alloc_meta(cache, object);
kasan_set_track(&alloc_meta->free_track[0], GFP_NOWAIT);
}

@@ -65,6 +65,6 @@ struct kasan_track *kasan_get_free_track(struct kmem_cache *cache,
{
struct kasan_alloc_meta *alloc_meta;

- alloc_meta = get_alloc_info(cache, object);
+ alloc_meta = kasan_get_alloc_meta(cache, object);
return &alloc_meta->free_track[0];
}
diff --git a/mm/kasan/kasan.h b/mm/kasan/kasan.h
index a3bf60ceb5e1..e5b8367a07f2 100644
--- a/mm/kasan/kasan.h
+++ b/mm/kasan/kasan.h
@@ -148,10 +148,10 @@ struct kasan_free_meta {
#endif
};

-struct kasan_alloc_meta *get_alloc_info(struct kmem_cache *cache,
- const void *object);
-struct kasan_free_meta *get_free_info(struct kmem_cache *cache,
- const void *object);
+struct kasan_alloc_meta *kasan_get_alloc_meta(struct kmem_cache *cache,
+ const void *object);
+struct kasan_free_meta *kasan_get_free_meta(struct kmem_cache *cache,
+ const void *object);

void kasan_poison_memory(const void *address, size_t size, u8 value);

diff --git a/mm/kasan/quarantine.c b/mm/kasan/quarantine.c
index a0792f0d6d0f..0da3d37e1589 100644
--- a/mm/kasan/quarantine.c
+++ b/mm/kasan/quarantine.c
@@ -166,7 +166,7 @@ void quarantine_put(struct kmem_cache *cache, void *object)
unsigned long flags;
struct qlist_head *q;
struct qlist_head temp = QLIST_INIT;
- struct kasan_free_meta *info = get_free_info(cache, object);
+ struct kasan_free_meta *meta = kasan_get_free_meta(cache, object);

/*
* Note: irq must be disabled until after we move the batch to the
@@ -179,7 +179,7 @@ void quarantine_put(struct kmem_cache *cache, void *object)
local_irq_save(flags);

q = this_cpu_ptr(&cpu_quarantine);
- qlist_put(q, &info->quarantine_link, cache->size);
+ qlist_put(q, &meta->quarantine_link, cache->size);
if (unlikely(q->bytes > QUARANTINE_PERCPU_SIZE)) {
qlist_move_all(q, &temp);

diff --git a/mm/kasan/report.c b/mm/kasan/report.c
index f8817d5685a7..dee5350b459c 100644
--- a/mm/kasan/report.c
+++ b/mm/kasan/report.c
@@ -162,12 +162,12 @@ static void describe_object_addr(struct kmem_cache *cache, void *object,
static void describe_object(struct kmem_cache *cache, void *object,
const void *addr, u8 tag)
{
- struct kasan_alloc_meta *alloc_info = get_alloc_info(cache, object);
+ struct kasan_alloc_meta *alloc_meta = kasan_get_alloc_meta(cache, object);

if (cache->flags & SLAB_KASAN) {
struct kasan_track *free_track;

- print_track(&alloc_info->alloc_track, "Allocated");
+ print_track(&alloc_meta->alloc_track, "Allocated");
pr_err("\n");
free_track = kasan_get_free_track(cache, object, tag);
if (free_track) {
@@ -176,14 +176,14 @@ static void describe_object(struct kmem_cache *cache, void *object,
}

#ifdef CONFIG_KASAN_GENERIC
- if (alloc_info->aux_stack[0]) {
+ if (alloc_meta->aux_stack[0]) {
pr_err("Last call_rcu():\n");
- print_stack(alloc_info->aux_stack[0]);
+ print_stack(alloc_meta->aux_stack[0]);
pr_err("\n");
}
- if (alloc_info->aux_stack[1]) {
+ if (alloc_meta->aux_stack[1]) {
pr_err("Second to last call_rcu():\n");
- print_stack(alloc_info->aux_stack[1]);
+ print_stack(alloc_meta->aux_stack[1]);
pr_err("\n");
}
#endif
diff --git a/mm/kasan/report_sw_tags.c b/mm/kasan/report_sw_tags.c
index aebc44a29e83..317100fd95b9 100644
--- a/mm/kasan/report_sw_tags.c
+++ b/mm/kasan/report_sw_tags.c
@@ -46,7 +46,7 @@ const char *get_bug_type(struct kasan_access_info *info)
if (page && PageSlab(page)) {
cache = page->slab_cache;
object = nearest_obj(cache, page, (void *)addr);
- alloc_meta = get_alloc_info(cache, object);
+ alloc_meta = kasan_get_alloc_meta(cache, object);

for (i = 0; i < KASAN_NR_FREE_STACKS; i++)
if (alloc_meta->free_pointer_tag[i] == tag)
diff --git a/mm/kasan/sw_tags.c b/mm/kasan/sw_tags.c
index ccc35a311179..c10863a45775 100644
--- a/mm/kasan/sw_tags.c
+++ b/mm/kasan/sw_tags.c
@@ -172,7 +172,7 @@ void kasan_set_free_info(struct kmem_cache *cache,
struct kasan_alloc_meta *alloc_meta;
u8 idx = 0;

- alloc_meta = get_alloc_info(cache, object);
+ alloc_meta = kasan_get_alloc_meta(cache, object);

#ifdef CONFIG_KASAN_SW_TAGS_IDENTIFY
idx = alloc_meta->free_track_idx;
@@ -189,7 +189,7 @@ struct kasan_track *kasan_get_free_track(struct kmem_cache *cache,
struct kasan_alloc_meta *alloc_meta;
int i = 0;

- alloc_meta = get_alloc_info(cache, object);
+ alloc_meta = kasan_get_alloc_meta(cache, object);

#ifdef CONFIG_KASAN_SW_TAGS_IDENTIFY
for (i = 0; i < KASAN_NR_FREE_STACKS; i++) {
--
2.28.0.1011.ga647a8990f-goog

Next message: Andrey Konovalov: "[PATCH RFC 3/8] kasan: introduce set_alloc_info"
Previous message: Andrey Konovalov: "[PATCH RFC 1/8] kasan: simplify quarantine_put call"
In reply to: Andrey Konovalov: "[PATCH RFC 1/8] kasan: simplify quarantine_put call"
Next in thread: Andrey Konovalov: "[PATCH RFC 3/8] kasan: introduce set_alloc_info"
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