linux-kernel - [PATCH v2 1/3] kasan: rename CONFIG_KASAN_SW_TAGS_IDENTIFY to CONFIG_KASAN_TAGS

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Message-Id: <20210612045156.44763-2-kylee0686026@gmail.com>
Date:   Sat, 12 Jun 2021 12:51:54 +0800
From:   Kuan-Ying Lee <kylee0686026@...il.com>
To:     Andrey Ryabinin <ryabinin.a.a@...il.com>,
        Alexander Potapenko <glider@...gle.com>,
        Andrey Konovalov <andreyknvl@...il.com>,
        Dmitry Vyukov <dvyukov@...gle.com>,
        Andrew Morton <akpm@...ux-foundation.org>
Cc:     kasan-dev@...glegroups.com, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org, Kuan-Ying Lee <kylee0686026@...il.com>,
        Marco Elver <elver@...gle.com>
Subject: [PATCH v2 1/3] kasan: rename CONFIG_KASAN_SW_TAGS_IDENTIFY to CONFIG_KASAN_TAGS_IDENTIFY

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@...il.com>
Suggested-by: Marco Elver <elver@...gle.com>
Cc: Andrey Ryabinin <ryabinin.a.a@...il.com>
Cc: Alexander Potapenko <glider@...gle.com>
Cc: Andrey Konovalov <andreyknvl@...il.com>
Cc: Dmitry Vyukov <dvyukov@...gle.com>
Cc: Andrew Morton <akpm@...ux-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