Re: [PATCH v3 08/15] kasan: add compiler barriers to KUNIT_EXPECT_KASAN_FAIL
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From: Alexander Potapenko <glider@google.com>
Date: 2021-01-15 14:12:50
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linux-mm, lkml
On Thu, Jan 14, 2021 at 8:36 PM Andrey Konovalov [off-list ref] wrote:
It might not be obvious to the compiler that the expression must be executed between writing and reading to fail_data. In this case, the compiler might reorder or optimize away some of the accesses, and the tests will fail. Add compiler barriers around the expression in KUNIT_EXPECT_KASAN_FAIL and use READ/WRITE_ONCE() for accessing fail_data fields. Link: https://linux-review.googlesource.com/id/I046079f48641a1d36fe627fc8827a9249102fd50 Reviewed-by: Marco Elver <elver@google.com> Signed-off-by: Andrey Konovalov <redacted>
Reviewed-by: Alexander Potapenko <glider@google.com> _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel