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[77.7.122.14]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-486eb33e020sm24477516f8f.18.2026.09.13.20.00.52 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Sun, 13 Sep 2026 20:00:53 -0700 (PDT) From: Karl Mehltretter To: Brendan Higgins , David Gow , Rae Moar Cc: Karl Mehltretter , =?UTF-8?q?Thomas=20Wei=C3=9Fschuh?= , Shuah Khan , linux-kselftest@vger.kernel.org, kunit-dev@googlegroups.com, linux-kernel@vger.kernel.org Subject: [PATCH next] kunit: Initialize filter error before disabled cleanup Date: Mon, 14 Sep 2026 04:59:33 +0200 Message-Id: <20260914025933.9832-1-kmehltretter@gmail.com> X-Mailer: git-send-email 2.39.5 (Apple Git-154) In-Reply-To: <20260901-kunit-void-v1-1-c91952391d66@linutronix.de> References: <20260901-kunit-void-v1-1-c91952391d66@linutronix.de> Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit kunit_run_all_tests() jumps to free_out when KUnit execution is disabled. If a boot filter is configured, free_out tests err even though kunit_filter_suites() was never called to initialize it. Clang's -Wconditional-uninitialized diagnoses this path. KMSAN confirms the runtime use. With CONFIG_KUNIT_DEFAULT_ENABLED=n, CONFIG_KUNIT_DEFAULT_FILTER_GLOB="*", CONFIG_INIT_STACK_NONE=y and CONFIG_KMSAN=y, KMSAN reports an uninitialized-value use in kunit_run_all_tests() and identifies local variable err as its origin. Restore the zero initializer. It remains necessary as cleanup state after kunit_run_all_tests() was changed to return void. Fixes: e38f53f04824 ("kunit: Return void from kunit_run_all_tests()") Signed-off-by: Karl Mehltretter --- lib/kunit/executor.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/lib/kunit/executor.c b/lib/kunit/executor.c index c798a02470d8..6e4664ad82ad 100644 --- a/lib/kunit/executor.c +++ b/lib/kunit/executor.c @@ -382,7 +382,7 @@ void kunit_run_all_tests(void) __kunit_suites_start, __kunit_suites_end, }; size_t init_num_suites = init_suite_set.end - init_suite_set.start; - int err; + int err = 0; if (init_num_suites > 0) { suite_set = kunit_merge_suite_sets(init_suite_set, normal_suite_set); base-commit: 68142f986ff04b2b70b31db00f719bf690f64a9a -- 2.53.0