kernel.git/tools/testing/selftests/arm64/mte/check_buffer_fill.c, branch master

kselftest/arm64/mte: Preparation for mte store only test

2025-07-02T17:50:53Z

Since ARMv8.9, FEAT_MTE_STORE_ONLY can be used to restrict raise of tag check fault on store operation only. This patch is preparation for testing FEAT_MTE_STORE_ONLY It shouldn't change test result. Signed-off-by: Yeoreum Yun Reviewed-by: Mark Brown Link: https://lore.kernel.org/r/20250618092957.2069907-8-yeoreum.yun@arm.com Signed-off-by: Catalin Marinas

kselftest/arm64/mte: Register mte signal handler with SA_EXPOSE_TAGBITS

2025-07-02T16:55:20Z

To test address tag[63:60] and memory tag[59:56] is preserved when memory tag fault happen, Let mte_register_signal() to register signal handler with SA_EXPOSE_TAGBITS. Signed-off-by: Yeoreum Yun Reviewed-by: Mark Brown Link: https://lore.kernel.org/r/20250618084513.1761345-6-yeoreum.yun@arm.com Signed-off-by: Catalin Marinas

kselftest/arm64: mte: fix printf type warnings about pointers

2024-10-17T17:54:17Z

When printing the value of a pointer, we should not use an integer format specifier, but the dedicated "%p" instead. Signed-off-by: Andre Przywara Reviewed-by: Mark Brown Link: https://lore.kernel.org/r/20240816153251.2833702-8-andre.przywara@arm.com Signed-off-by: Catalin Marinas

kselftest/arm64: fix array_size.cocci warning

2022-11-08T16:05:31Z

Use ARRAY_SIZE to fix the following coccicheck warnings: tools/testing/selftests/arm64/mte/check_buffer_fill.c:341:20-21: WARNING: Use ARRAY_SIZE tools/testing/selftests/arm64/mte/check_buffer_fill.c:35:20-21: WARNING: Use ARRAY_SIZE tools/testing/selftests/arm64/mte/check_buffer_fill.c:168:20-21: WARNING: Use ARRAY_SIZE tools/testing/selftests/arm64/mte/check_buffer_fill.c:72:20-21: WARNING: Use ARRAY_SIZE tools/testing/selftests/arm64/mte/check_buffer_fill.c:369:25-26: WARNING: Use ARRAY_SIZE Signed-off-by: Kang Minchul Link: https://lore.kernel.org/r/20221105073143.78521-1-tegongkang@gmail.com Signed-off-by: Will Deacon

arm64: mte: style: Simplify bool comparison

2021-01-20T12:44:26Z

Fix the following coccicheck warning: ./tools/testing/selftests/arm64/mte/check_buffer_fill.c:84:12-35: WARNING: Comparison to bool Signed-off-by: YANG LI Reported-by: Abaci Robot Link: https://lore.kernel.org/r/1610357737-68678-1-git-send-email-abaci-bugfix@linux.alibaba.com Signed-off-by: Will Deacon

kselftest/arm64: Fix check_buffer_fill test

2020-10-28T13:42:23Z

The check_buffer_fill test reports the error below because the test plan is not declared correctly: # Planned tests != run tests (0 != 20) Fix the test adding the correct test plan declaration. Fixes: e9b60476bea0 ("kselftest/arm64: Add utilities and a test to validate mte memory") Signed-off-by: Vincenzo Frascino Cc: Shuah Khan Cc: Catalin Marinas Cc: Will Deacon Cc: Gabor Kertesz Cc: Amit Daniel Kachhap Link: https://lore.kernel.org/r/20201026121248.2340-2-vincenzo.frascino@arm.com Signed-off-by: Will Deacon

kselftest/arm64: Add utilities and a test to validate mte memory

2020-10-05T17:52:17Z

This test checks that the memory tag is present after mte allocation and the memory is accessible with those tags. This testcase verifies all sync, async and none mte error reporting mode. The allocated mte buffers are verified for Allocated range (no error expected while accessing buffer), Underflow range, and Overflow range. Different test scenarios covered here are, * Verify that mte memory are accessible at byte/block level. * Force underflow and overflow to occur and check the data consistency. * Check to/from between tagged and untagged memory. * Check that initial allocated memory to have 0 tag. This change also creates the necessary infrastructure to add mte test cases. MTE kselftests can use the several utility functions provided here to add wide variety of mte test scenarios. GCC compiler need flag '-march=armv8.5-a+memtag' so those flags are verified before compilation. The mte testcases can be launched with kselftest framework as, make TARGETS=arm64 ARM64_SUBTARGETS=mte kselftest or compiled as, make -C tools/testing/selftests TARGETS=arm64 ARM64_SUBTARGETS=mte CC='compiler' Co-developed-by: Gabor Kertesz Signed-off-by: Gabor Kertesz Signed-off-by: Amit Daniel Kachhap Tested-by: Catalin Marinas Acked-by: Catalin Marinas Cc: Shuah Khan Cc: Catalin Marinas Cc: Will Deacon Link: https://lore.kernel.org/r/20201002115630.24683-2-amit.kachhap@arm.com Signed-off-by: Will Deacon