linux-kernel - [RFC PATCH 6/6] selftests: tracing: Add syntax testcase for wprobe

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Message-ID: <175673794034.478080.9788390554653757444.stgit@devnote2>
Date: Mon,  1 Sep 2025 23:45:40 +0900
From: "Masami Hiramatsu (Google)" <mhiramat@...nel.org>
To: Steven Rostedt <rostedt@...dmis.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...nel.org>,
	x86@...nel.org
Cc: Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
	Masami Hiramatsu <mhiramat@...nel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Borislav Petkov <bp@...en8.de>,
	Dave Hansen <dave.hansen@...ux.intel.com>,
	"H . Peter Anvin" <hpa@...or.com>,
	Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
	Ian Rogers <irogers@...gle.com>,
	linux-kernel@...r.kernel.org,
	linux-trace-kernel@...r.kernel.org,
	linux-doc@...r.kernel.org,
	linux-perf-users@...r.kernel.org
Subject: [RFC PATCH 6/6] selftests: tracing: Add syntax testcase for wprobe

From: Masami Hiramatsu (Google) <mhiramat@...nel.org>

Add "wprobe_syntax_errors.tc" testcase for testing syntax errors
of the watch probe events.

Signed-off-by: Masami Hiramatsu (Google) <mhiramat@...nel.org>
---
 .../test.d/dynevent/wprobes_syntax_errors.tc       |   20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
 create mode 100644 tools/testing/selftests/ftrace/test.d/dynevent/wprobes_syntax_errors.tc

diff --git a/tools/testing/selftests/ftrace/test.d/dynevent/wprobes_syntax_errors.tc b/tools/testing/selftests/ftrace/test.d/dynevent/wprobes_syntax_errors.tc
new file mode 100644
index 000000000000..82a273d9efb4
--- /dev/null
+++ b/tools/testing/selftests/ftrace/test.d/dynevent/wprobes_syntax_errors.tc
@@ -0,0 +1,20 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+# description: Watch probe event parser error log check
+# requires: dynamic_events "w[:[<group>/][<event>]] [r|w|rw]@<addr>[:<len>]":README
+
+check_error() { # command-with-error-pos-by-^
+    ftrace_errlog_check 'event_probe' "$1" 'dynamic_events'
+}
+
+check_error 'w ^symbol'			# BAD_ACCESS_FMT
+check_error 'w ^a@...bol'		# BAD_ACCESS_TYPE
+check_error 'w w@...mbol'		# BAD_ACCESS_ADDR
+check_error 'w w@...ffies+offset'	# BAD_ACCESS_ADDR
+check_error 'w w@...fies:^100'		# BAD_ACCESS_LEN
+check_error 'w w@...fies ^$arg1'	# BAD_VAR
+check_error 'w w@...fies ^$retval'	# BAD_VAR
+check_error 'w w@...fies ^$stack'	# BAD_VAR
+check_error 'w w@...fies ^%ax'		# BAD_VAR
+
+exit 0