copy_user_test() is the last KUnit-incompatible test with CONFIG_KASAN_MODULE_TEST requirement, which we are going to migrate to KUnit framework and delete the former test and Kconfig as well. In this patch series: - [1/3] move kasan_check_write() and check_object_size() to do_strncpy_from_user() to cover with KASAN checks with multiple conditions in strncpy_from_user(). - [2/3] migrated copy_user_test() to KUnit, where we can also test strncpy_from_user() due to [1/4]. KUnits have been tested on: - x86_64 with CONFIG_KASAN_GENERIC. Passed - arm64 with CONFIG_KASAN_SW_TAGS. 1 fail. See [1] - arm64 with CONFIG_KASAN_HW_TAGS. 1 fail. See [1] [1] https://lore.kernel.org/linux-mm/CACzwLxj21h7nCcS2-KA_q7ybe+5pxH0uCDwu64q_9pPsydneWQ@xxxxxxxxxxxxxx/ - [3/3] delete CONFIG_KASAN_MODULE_TEST and documentation occurrences. Changes v3 -> v4: - moved checks from do_strncpy_from_user to strncpy_from_user due to "call to __check_object_size() with UACCESS enabled" warning, during the kernel build. Changes v2 -> v3: - added in [1/3] Reviewed-by: Andrey Konovalov. - added a long string in usermem for strncpy_from_user. Suggested by Andrey. - applied Andrey's patch to modify further kasan.rst. Changes v1 -> v2: - moved the sanitization to do_strncpy_from_user and as the separate commit per Andrey's review. - deleted corresponding entries of kasan_test_module.o in Makefile - deleted CONFIG_KASAN_MODULE_TEST at all with the documentation in separate commit. - added Documentation maintainers in CC. Sabyrzhan Tasbolatov (3): kasan: move checks to do_strncpy_from_user kasan: migrate copy_user_test to kunit kasan: delete CONFIG_KASAN_MODULE_TEST Documentation/dev-tools/kasan.rst | 9 +-- .../translations/zh_CN/dev-tools/kasan.rst | 6 +- .../translations/zh_TW/dev-tools/kasan.rst | 6 +- lib/Kconfig.kasan | 7 -- lib/strncpy_from_user.c | 5 +- mm/kasan/Makefile | 2 - mm/kasan/kasan.h | 2 +- mm/kasan/kasan_test_c.c | 39 +++++++++ mm/kasan/kasan_test_module.c | 81 ------------------- mm/kasan/report.c | 2 +- 10 files changed, 48 insertions(+), 111 deletions(-) delete mode 100644 mm/kasan/kasan_test_module.c -- 2.34.1
