From: Kuan-Ying Lee <kylee0686026@gmail.com>
To: Andrey Ryabinin <ryabinin.a.a@gmail.com>,
Alexander Potapenko <glider@google.com>,
Andrey Konovalov <andreyknvl@gmail.com>,
Dmitry Vyukov <dvyukov@google.com>,
Andrew Morton <akpm@linux-foundation.org>
Cc: kasan-dev@googlegroups.com, linux-kernel@vger.kernel.org,
linux-mm@kvack.org, Kuan-Ying Lee <kylee0686026@gmail.com>,
Marco Elver <elver@google.com>
Subject: [PATCH v2 1/3] kasan: rename CONFIG_KASAN_SW_TAGS_IDENTIFY to CONFIG_KASAN_TAGS_IDENTIFY
Date: Sat, 12 Jun 2021 12:51:54 +0800 [thread overview]
Message-ID: <20210612045156.44763-2-kylee0686026@gmail.com> (raw)
In-Reply-To: <20210612045156.44763-1-kylee0686026@gmail.com>
This patch renames CONFIG_KASAN_SW_TAGS_IDENTIFY to
CONFIG_KASAN_TAGS_IDENTIFY in order to be compatible
with hardware tag-based mode.
Signed-off-by: Kuan-Ying Lee <kylee0686026@gmail.com>
Suggested-by: Marco Elver <elver@google.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Andrey Konovalov <andreyknvl@gmail.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
---
lib/Kconfig.kasan | 2 +-
mm/kasan/kasan.h | 4 ++--
mm/kasan/report_sw_tags.c | 2 +-
mm/kasan/sw_tags.c | 4 ++--
4 files changed, 6 insertions(+), 6 deletions(-)
diff --git a/lib/Kconfig.kasan b/lib/Kconfig.kasan
index cffc2ebbf185..6f5d48832139 100644
--- a/lib/Kconfig.kasan
+++ b/lib/Kconfig.kasan
@@ -155,7 +155,7 @@ config KASAN_STACK
CONFIG_COMPILE_TEST. On gcc it is assumed to always be safe
to use and enabled by default.
-config KASAN_SW_TAGS_IDENTIFY
+config KASAN_TAGS_IDENTIFY
bool "Enable memory corruption identification"
depends on KASAN_SW_TAGS
help
diff --git a/mm/kasan/kasan.h b/mm/kasan/kasan.h
index 8f450bc28045..b0fc9a1eb7e3 100644
--- a/mm/kasan/kasan.h
+++ b/mm/kasan/kasan.h
@@ -153,7 +153,7 @@ struct kasan_track {
depot_stack_handle_t stack;
};
-#ifdef CONFIG_KASAN_SW_TAGS_IDENTIFY
+#ifdef CONFIG_KASAN_TAGS_IDENTIFY
#define KASAN_NR_FREE_STACKS 5
#else
#define KASAN_NR_FREE_STACKS 1
@@ -170,7 +170,7 @@ struct kasan_alloc_meta {
#else
struct kasan_track free_track[KASAN_NR_FREE_STACKS];
#endif
-#ifdef CONFIG_KASAN_SW_TAGS_IDENTIFY
+#ifdef CONFIG_KASAN_TAGS_IDENTIFY
u8 free_pointer_tag[KASAN_NR_FREE_STACKS];
u8 free_track_idx;
#endif
diff --git a/mm/kasan/report_sw_tags.c b/mm/kasan/report_sw_tags.c
index 3d20d3451d9e..821a14a19a92 100644
--- a/mm/kasan/report_sw_tags.c
+++ b/mm/kasan/report_sw_tags.c
@@ -31,7 +31,7 @@
const char *kasan_get_bug_type(struct kasan_access_info *info)
{
-#ifdef CONFIG_KASAN_SW_TAGS_IDENTIFY
+#ifdef CONFIG_KASAN_TAGS_IDENTIFY
struct kasan_alloc_meta *alloc_meta;
struct kmem_cache *cache;
struct page *page;
diff --git a/mm/kasan/sw_tags.c b/mm/kasan/sw_tags.c
index 9362938abbfa..dd05e6c801fa 100644
--- a/mm/kasan/sw_tags.c
+++ b/mm/kasan/sw_tags.c
@@ -177,7 +177,7 @@ void kasan_set_free_info(struct kmem_cache *cache,
if (!alloc_meta)
return;
-#ifdef CONFIG_KASAN_SW_TAGS_IDENTIFY
+#ifdef CONFIG_KASAN_TAGS_IDENTIFY
idx = alloc_meta->free_track_idx;
alloc_meta->free_pointer_tag[idx] = tag;
alloc_meta->free_track_idx = (idx + 1) % KASAN_NR_FREE_STACKS;
@@ -196,7 +196,7 @@ struct kasan_track *kasan_get_free_track(struct kmem_cache *cache,
if (!alloc_meta)
return NULL;
-#ifdef CONFIG_KASAN_SW_TAGS_IDENTIFY
+#ifdef CONFIG_KASAN_TAGS_IDENTIFY
for (i = 0; i < KASAN_NR_FREE_STACKS; i++) {
if (alloc_meta->free_pointer_tag[i] == tag)
break;
--
2.25.1
next prev parent reply other threads:[~2021-06-12 4:55 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-12 4:51 [PATCH v2 0/3] kasan: add memory corruption identification for hw tag-based kasan Kuan-Ying Lee
2021-06-12 4:51 ` Kuan-Ying Lee [this message]
2021-06-12 4:51 ` [PATCH v2 2/3] kasan: integrate the common part of two KASAN tag-based modes Kuan-Ying Lee
2021-06-12 14:42 ` Marco Elver
2021-06-12 15:51 ` Kuan-Ying Lee
2021-06-14 8:48 ` Marco Elver
2021-06-19 6:39 ` Kuan-Ying Lee
2021-06-12 15:52 ` Greg Kroah-Hartman
2021-06-12 4:51 ` [PATCH v2 3/3] kasan: add memory corruption identification support for hardware tag-based mode Kuan-Ying Lee
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