kasan: detect false-positives in tests
Currently, KASAN-KUnit tests can check that a particular annotated part of code causes a KASAN report. However, they do not check that no unwanted reports happen between the annotated parts. This patch implements these checks. It is done by setting report_data.report_found to false in kasan_test_init() and at the end of KUNIT_EXPECT_KASAN_FAIL() and then checking that it remains false at the beginning of KUNIT_EXPECT_KASAN_FAIL() and in kasan_test_exit(). kunit_add_named_resource() call is moved to kasan_test_init(), and the value of fail_data.report_expected is kept as false in between KUNIT_EXPECT_KASAN_FAIL() annotations for consistency. Link: https://lkml.kernel.org/r/48079c52cc329fbc52f4386996598d58022fb872.1617207873.git.andreyknvl@google.com Signed-off-by:Andrey Konovalov <andreyknvl@google.com> Reviewed-by:
Marco Elver <elver@google.com> Cc: Alexander Potapenko <glider@google.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Andrey Ryabinin <aryabinin@virtuozzo.com> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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23f61f0f
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