diff options
| author | Andrey Konovalov <andreyknvl@google.com> | 2023-12-21 21:04:53 +0100 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-12-29 11:58:46 -0800 |
| commit | 4e397274e10beb385cee1a04c7850c1c46ae5d3e (patch) | |
| tree | c3fd1f097f037e9505e41517b4b17388ad396908 /mm/kasan | |
| parent | 3ab9304db6ab13a8d4b5f99ef0bbd9302f26c741 (diff) | |
kasan: speed up match_all_mem_tag test for SW_TAGS
Checking all 256 possible tag values in the match_all_mem_tag KASAN test
is slow and produces 256 reports. Instead, just check the first 8 and the
last 8.
Link: https://lkml.kernel.org/r/6fe51262defd80cdc1150c42404977aafd1b6167.1703188911.git.andreyknvl@google.com
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Marco Elver <elver@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/kasan')
| -rw-r--r-- | mm/kasan/kasan_test.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/mm/kasan/kasan_test.c b/mm/kasan/kasan_test.c index 691c15fc7cdb..971cfff4ca0b 100644 --- a/mm/kasan/kasan_test.c +++ b/mm/kasan/kasan_test.c @@ -1797,6 +1797,14 @@ static void match_all_mem_tag(struct kunit *test) /* For each possible tag value not matching the pointer tag. */ for (tag = KASAN_TAG_MIN; tag <= KASAN_TAG_KERNEL; tag++) { + /* + * For Software Tag-Based KASAN, skip the majority of tag + * values to avoid the test printing too many reports. + */ + if (IS_ENABLED(CONFIG_KASAN_SW_TAGS) && + tag >= KASAN_TAG_MIN + 8 && tag <= KASAN_TAG_KERNEL - 8) + continue; + if (tag == get_tag(ptr)) continue; |