From: "Günther Noack" <gnoack3000@gmail.com>
To: "Mickaël Salaün" <mic@digikod.net>
Cc: "Wang Yan" <wangyan01@kylinos.cn>,
linux-kselftest@vger.kernel.org,
"Günther Noack" <gnoack3000@gmail.com>,
"Günther Noack" <gnoack@google.com>,
"Shuah Khan" <shuah@kernel.org>,
linux-security-module@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [PATCH 19/27] selftests/landlock: Fix off-by-one in regex_escape()
Date: Thu, 8 Oct 2026 16:25:48 +0200 [thread overview]
Message-ID: <20261008142604.39107-21-gnoack3000@gmail.com> (raw)
In-Reply-To: <20261008142604.39107-2-gnoack3000@gmail.com>
The final check in regex_escape() was off by one byte
and should require one byte less to put the NUL byte.
Assisted-by: LLM
Signed-off-by: Günther Noack <gnoack3000@gmail.com>
---
tools/testing/selftests/landlock/common.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/testing/selftests/landlock/common.h b/tools/testing/selftests/landlock/common.h
index 91842f618a3a..ae6a0eb8e343 100644
--- a/tools/testing/selftests/landlock/common.h
+++ b/tools/testing/selftests/landlock/common.h
@@ -294,7 +294,7 @@ static __maybe_unused ssize_t regex_escape(const char *const src, char *dst,
*d++ = *s;
}
}
- if (d >= dst + dst_size - 1)
+ if (d >= dst + dst_size)
goto err_nomem;
*d = '\0';
--
2.56.0
next prev parent reply other threads:[~2026-10-08 14:27 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-08 14:25 [PATCH 00/27] landlock: Selftest fixes and cleanups Günther Noack
2026-10-08 14:25 ` [PATCH 01/27] selftests/landlock: Propagate grandchild failures in unix_scoping Günther Noack
2026-10-08 14:25 ` [PATCH 02/27] selftests/landlock: Propagate EXPECT failures from forked children Günther Noack
2026-10-08 14:25 ` [PATCH 03/27] selftests/landlock: Check the thread result in audit.thread Günther Noack
2026-10-08 14:25 ` [PATCH 04/27] selftests/landlock: Zero-initialize the buffer in inconsistent_attr Günther Noack
2026-10-08 14:25 ` [PATCH 05/27] selftests/landlock: Fix the openat() success check in fs_bench Günther Noack
2026-10-08 14:25 ` [PATCH 06/27] selftests/landlock: Fix the reported clock tick rate " Günther Noack
2026-10-08 14:25 ` [PATCH 07/27] selftests/landlock: Fix the ruleset_fd check in empty_or_same_ruleset Günther Noack
2026-10-08 14:25 ` [PATCH 08/27] selftests/landlock: Handle a missing control message in recv_fd() Günther Noack
2026-10-08 14:25 ` [PATCH 09/27] selftests/landlock: Assert tracefs_extract_field() results that are used Günther Noack
2026-10-08 14:25 ` [PATCH 10/27] selftests/landlock: Assert audit initialization in fixture setups Günther Noack
2026-10-08 14:25 ` [PATCH 11/27] selftests/landlock: Assert helper results that are used afterwards Günther Noack
2026-10-08 14:25 ` [PATCH 12/27] selftests/landlock: Assert audit_count_records() before using its result Günther Noack
2026-10-08 14:25 ` [PATCH 13/27] selftests/landlock: Fix memory leak in audit_init_filter_exe() Günther Noack
2026-10-08 14:25 ` [PATCH 14/27] selftests/landlock: Make audit_message large enough for any exe filter Günther Noack
2026-10-08 14:25 ` [PATCH 15/27] selftests/landlock: Close leaked file descriptors Günther Noack
2026-10-08 14:25 ` [PATCH 16/27] selftests/landlock: Check errno for combined VERSION and ERRATA flags Günther Noack
2026-10-08 14:25 ` [PATCH 17/27] selftests/landlock: Fix SIGURG handler setup in scoped_signal_test Günther Noack
2026-10-08 14:25 ` [PATCH 18/27] selftests/landlock: Fix regex_escape() error handling in matches_log_fs_extra() Günther Noack
2026-10-08 14:25 ` Günther Noack [this message]
2026-10-08 14:25 ` [PATCH 20/27] selftests/landlock: Fix the snprintf() error check " Günther Noack
2026-10-08 14:25 ` [PATCH 21/27] selftests/landlock: Use _exit() in the named_pipe_ioctl child Günther Noack
2026-10-08 14:25 ` [PATCH 22/27] selftests/landlock: Fix messages and comments in helper programs Günther Noack
2026-10-08 14:25 ` [PATCH 23/27] selftests/landlock: Fix stale comments in common.h and audit.h Günther Noack
2026-10-08 14:25 ` [PATCH 24/27] selftests/landlock: Use ASSERT for syscall failures before errno checks Günther Noack
2026-10-08 14:25 ` [PATCH 25/27] selftests/landlock: Assert WIFEXITED() before checking the exit status Günther Noack
2026-10-08 14:25 ` [PATCH 26/27] selftests/landlock: Use EXPECT for closing FDs and stopping threads Günther Noack
2026-10-08 14:25 ` [PATCH 27/27] selftests/landlock: Use EXPECT for checks that later steps do not need Günther Noack
2026-10-08 14:33 ` [PATCH 00/27] landlock: Selftest fixes and cleanups Günther Noack
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