The patch titled
Subject: kasan: rename CONFIG_KASAN_SW_TAGS_IDENTIFY to CONFIG_KASAN_TAGS_IDENTIFY
has been added to the -mm tree. Its filename is
kasan-rename-config_kasan_sw_tags_identify-to-config_kasan_tags_identify.patch
This patch should soon appear at
https://ozlabs.org/~akpm/mmots/broken-out/kasan-rename-config_kasan_sw_tags_identify-to-config_kasan_tags_identify.patch
and later at
https://ozlabs.org/~akpm/mmotm/broken-out/kasan-rename-config_kasan_sw_tags_identify-to-config_kasan_tags_identify.patch
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------------------------------------------------------
From: Kuan-Ying Lee <Kuan-Ying.Lee@xxxxxxxxxxxx>
Subject: kasan: rename CONFIG_KASAN_SW_TAGS_IDENTIFY to CONFIG_KASAN_TAGS_IDENTIFY
Patch series "kasan: add memory corruption identification support for hw tag-based kasan", v4.
Add memory corruption identification for hardware tag-based KASAN mode.
This patch (of 3):
Rename CONFIG_KASAN_SW_TAGS_IDENTIFY to CONFIG_KASAN_TAGS_IDENTIFY in
order to be compatible with hardware tag-based mode.
Link: https://lkml.kernel.org/r/20210626100931.22794-1-Kuan-Ying.Lee@xxxxxxxxxxxx
Link: https://lkml.kernel.org/r/20210626100931.22794-2-Kuan-Ying.Lee@xxxxxxxxxxxx
Signed-off-by: Kuan-Ying Lee <Kuan-Ying.Lee@xxxxxxxxxxxx>
Suggested-by: Marco Elver <elver@xxxxxxxxxx>
Reviewed-by: Alexander Potapenko <glider@xxxxxxxxxx>
Reviewed-by: Andrey Konovalov <andreyknvl@xxxxxxxxx>
Cc: Andrey Ryabinin <ryabinin.a.a@xxxxxxxxx>
Cc: Dmitry Vyukov <dvyukov@xxxxxxxxxx>
Cc: Matthias Brugger <matthias.bgg@xxxxxxxxx>
Cc: Chinwen Chang <chinwen.chang@xxxxxxxxxxxx>
Cc: Nicholas Tang <nicholas.tang@xxxxxxxxxxxx>
Cc: Kuan-Ying Lee <Kuan-Ying.Lee@xxxxxxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
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(-)
--- a/lib/Kconfig.kasan~kasan-rename-config_kasan_sw_tags_identify-to-config_kasan_tags_identify
+++ a/lib/Kconfig.kasan
@@ -167,7 +167,7 @@ config KASAN_STACK
instrumentation is also disabled as it adds inline-style
instrumentation that is run unconditionally.
-config KASAN_SW_TAGS_IDENTIFY
+config KASAN_TAGS_IDENTIFY
bool "Enable memory corruption identification"
depends on KASAN_SW_TAGS
help
--- a/mm/kasan/kasan.h~kasan-rename-config_kasan_sw_tags_identify-to-config_kasan_tags_identify
+++ a/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
--- a/mm/kasan/report_sw_tags.c~kasan-rename-config_kasan_sw_tags_identify-to-config_kasan_tags_identify
+++ a/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;
--- a/mm/kasan/sw_tags.c~kasan-rename-config_kasan_sw_tags_identify-to-config_kasan_tags_identify
+++ a/mm/kasan/sw_tags.c
@@ -177,7 +177,7 @@ void kasan_set_free_info(struct kmem_cac
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
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;
_
Patches currently in -mm which might be from Kuan-Ying.Lee@xxxxxxxxxxxx are
kasan-rename-config_kasan_sw_tags_identify-to-config_kasan_tags_identify.patch
kasan-integrate-the-common-part-of-two-kasan-tag-based-modes.patch
kasan-add-memory-corruption-identification-support-for-hardware-tag-based-mode.patch
