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[87.106.108.193]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-48feea5d4e4sm5738727f8f.57.2026.11.04.13.09.45 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 04 Nov 2026 13:09:45 -0800 (PST) From: =?utf-8?q?G=C3=BCnther_Noack?= Date: Wed, 04 Nov 2026 22:09:09 +0100 Subject: [PATCH v2 23/27] selftests/landlock: Fix stale comments in common.h and audit.h X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit Message-Id: <20261104-selftests-refactor-v2-23-c52f23f7ce33@gmail.com> References: <20261104-selftests-refactor-v2-0-c52f23f7ce33@gmail.com> In-Reply-To: <20261104-selftests-refactor-v2-0-c52f23f7ce33@gmail.com> To: =?utf-8?q?Micka=C3=ABl_Sala=C3=BCn?= , =?utf-8?q?G=C3=BCnther_Noack?= , Shuah Khan Cc: linux-security-module@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, =?utf-8?q?G=C3=BCnther_Noack?= X-Mailer: b4 0.15.2 * _init_caps() lists more than three capabilities. * A 64-bit hexadecimal domain ID has at most 16 digits, not 17. Size the buffer accordingly and drop a redundant domain_id check in audit_match_record(). Signed-off-by: Günther Noack --- tools/testing/selftests/landlock/audit.h | 7 +++---- tools/testing/selftests/landlock/common.h | 2 +- 2 files changed, 4 insertions(+), 5 deletions(-) diff --git a/tools/testing/selftests/landlock/audit.h b/tools/testing/selftests/landlock/audit.h index 173dcd1088db..d23bb2ad3a30 100644 --- a/tools/testing/selftests/landlock/audit.h +++ b/tools/testing/selftests/landlock/audit.h @@ -274,15 +274,14 @@ static int audit_match_record(int audit_fd, const __u16 type, *domain_id = 0; if (matches[1].rm_so != -1) { int match_len = matches[1].rm_eo - matches[1].rm_so; - /* The maximal characters of a 2^64 hexadecimal number is 17. */ - char dom_id[18]; + /* A 64-bit hexadecimal number has at most 16 digits. */ + char dom_id[17]; if (match_len > 0 && match_len < sizeof(dom_id)) { memcpy(dom_id, msg.data + matches[1].rm_so, match_len); dom_id[match_len] = '\0'; - if (domain_id) - *domain_id = strtoull(dom_id, NULL, 16); + *domain_id = strtoull(dom_id, NULL, 16); } } } diff --git a/tools/testing/selftests/landlock/common.h b/tools/testing/selftests/landlock/common.h index 0df8ae88d4fa..66d68a92c6cd 100644 --- a/tools/testing/selftests/landlock/common.h +++ b/tools/testing/selftests/landlock/common.h @@ -36,7 +36,7 @@ static const char bin_wait_pipe_sandbox[] = "./wait-pipe-sandbox"; static void _init_caps(struct __test_metadata *const _metadata, bool drop_all) { cap_t cap_p; - /* Only these three capabilities are useful for the tests. */ + /* Only these capabilities are useful for the tests. */ const cap_value_t caps[] = { /* clang-format off */ CAP_AUDIT_CONTROL, -- 2.56.0