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| author | Andrey Konovalov <andreyknvl@google.com> | 2021-03-15 16:20:19 +0300 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2021-04-11 12:57:45 +0300 |
| commit | e80a76aa1a91018d919d2210366943f9bf17009e (patch) | |
| tree | 1062ce71ffb0e6a77729fbc3dd1daecadaa01054 /mm/kasan/kasan.h | |
| parent | eab0e6e17d876381b4d47996eef3b5fd46ea4011 (diff) | |
| download | linux-e80a76aa1a91018d919d2210366943f9bf17009e.tar.xz | |
kasan, arm64: tests supports for HW_TAGS async mode
This change adds KASAN-KUnit tests support for the async HW_TAGS mode.
In async mode, tag fault aren't being generated synchronously when a
bad access happens, but are instead explicitly checked for by the kernel.
As each KASAN-KUnit test expect a fault to happen before the test is over,
check for faults as a part of the test handler.
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Andrey Konovalov <andreyknvl@google.com>
Tested-by: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Link: https://lore.kernel.org/r/20210315132019.33202-10-vincenzo.frascino@arm.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'mm/kasan/kasan.h')
| -rw-r--r-- | mm/kasan/kasan.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/mm/kasan/kasan.h b/mm/kasan/kasan.h index 02e9656b857f..2d29069ae977 100644 --- a/mm/kasan/kasan.h +++ b/mm/kasan/kasan.h @@ -304,6 +304,9 @@ static inline const void *arch_kasan_set_tag(const void *addr, u8 tag) #ifndef arch_set_tagging_report_once #define arch_set_tagging_report_once(state) #endif +#ifndef arch_force_async_tag_fault +#define arch_force_async_tag_fault() +#endif #ifndef arch_get_random_tag #define arch_get_random_tag() (0xFF) #endif @@ -318,6 +321,7 @@ static inline const void *arch_kasan_set_tag(const void *addr, u8 tag) #define hw_enable_tagging_async() arch_enable_tagging_async() #define hw_init_tags(max_tag) arch_init_tags(max_tag) #define hw_set_tagging_report_once(state) arch_set_tagging_report_once(state) +#define hw_force_async_tag_fault() arch_force_async_tag_fault() #define hw_get_random_tag() arch_get_random_tag() #define hw_get_mem_tag(addr) arch_get_mem_tag(addr) #define hw_set_mem_tag_range(addr, size, tag) arch_set_mem_tag_range((addr), (size), (tag)) @@ -334,11 +338,13 @@ static inline const void *arch_kasan_set_tag(const void *addr, u8 tag) void kasan_set_tagging_report_once(bool state); void kasan_enable_tagging_sync(void); +void kasan_force_async_fault(void); #else /* CONFIG_KASAN_HW_TAGS || CONFIG_KASAN_KUNIT_TEST */ static inline void kasan_set_tagging_report_once(bool state) { } static inline void kasan_enable_tagging_sync(void) { } +static inline void kasan_force_async_fault(void) { } #endif /* CONFIG_KASAN_HW_TAGS || CONFIG_KASAN_KUNIT_TEST */ |