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[87.106.108.193]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4a17fc664d5sm68997305e9.0.2026.10.08.07.27.36 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 08 Oct 2026 07:27:36 -0700 (PDT) From: =?UTF-8?q?G=C3=BCnther=20Noack?= To: =?UTF-8?q?Micka=C3=ABl=20Sala=C3=BCn?= Cc: Wang Yan , linux-kselftest@vger.kernel.org, =?UTF-8?q?G=C3=BCnther=20Noack?= , =?UTF-8?q?G=C3=BCnther=20Noack?= , Shuah Khan , linux-security-module@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 20/27] selftests/landlock: Fix the snprintf() error check in matches_log_fs_extra() Date: Thu, 8 Oct 2026 16:25:49 +0200 Message-ID: <20261008142604.39107-22-gnoack3000@gmail.com> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261008142604.39107-2-gnoack3000@gmail.com> References: <20261008142604.39107-2-gnoack3000@gmail.com> 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 By storing the snprintf result in a size_t, the chunk_len < 0 check could never be true. Store it in an int instead, matching the return type of snprintf(). Fixes: 316d06b01130 ("selftests/landlock: Add audit tests for filesystem") Assisted-by: LLM Signed-off-by: Günther Noack --- tools/testing/selftests/landlock/fs_test.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/landlock/fs_test.c b/tools/testing/selftests/landlock/fs_test.c index 9abc2adef79d..90f63af1d64d 100644 --- a/tools/testing/selftests/landlock/fs_test.c +++ b/tools/testing/selftests/landlock/fs_test.c @@ -7453,7 +7453,7 @@ static int matches_log_fs_extra(struct __test_metadata *const _metadata, (extra ? strlen(extra) : 0) + 1; char log_match[log_match_remaining]; char *log_match_cursor = log_match; - size_t chunk_len; + int chunk_len; ssize_t escaped_len; chunk_len = snprintf(log_match_cursor, log_match_remaining, -- 2.56.0