[PATCH v14 10/14] selftests: tracing: Add syntax testcase for wprobe
From: "Masami Hiramatsu (Google)" <mhiramat@kernel.org>
Date: 2026-08-30 14:28:50
Also in:
linux-doc, linux-perf-users, lkml
Subsystem:
kernel selftest framework, the rest, tracing · Maintainers:
Shuah Khan, Shuah Khan, Linus Torvalds, Steven Rostedt, Masami Hiramatsu
From: Masami Hiramatsu (Google) <mhiramat@kernel.org> Add "wprobe_syntax_errors.tc" testcase for testing syntax errors of the watch probe events. Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> --- Changes in v14: - Update comment for invalid offset syntax check to BAD_PROBE_ADDR. - Add testcase for invalid address 0 error check (BAD_ACCESS_ADDR). Changes in v12: - Add NO_ARG_BODY error case. Changes in v11: - Add WPROBE_NO_MAXACT syntax error case. --- .../test.d/dynevent/wprobes_syntax_errors.tc | 23 ++++++++++++++++++++ 1 file changed, 23 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..e0df58fe7aa3
--- /dev/null
+++ b/tools/testing/selftests/ftrace/test.d/dynevent/wprobes_syntax_errors.tc@@ -0,0 +1,23 @@ +#!/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 'wprobe' "$1" 'dynamic_events' +} + +check_error '^w' # NO_ARG_BODY +check_error 'w^10 w@jiffies' # WPROBE_NO_MAXACT +check_error 'w ^symbol' # BAD_ACCESS_FMT +check_error 'w ^a@symbol' # BAD_ACCESS_TYPE +check_error 'w w@^symbol' # BAD_ACCESS_ADDR +check_error 'w w@^0:4' # BAD_ACCESS_ADDR +check_error 'w w@jiffies^+offset' # BAD_PROBE_ADDR +check_error 'w w@jiffies:^100' # BAD_ACCESS_LEN +check_error 'w w@jiffies ^$arg1' # BAD_VAR +check_error 'w w@jiffies ^$retval' # BAD_VAR +check_error 'w w@jiffies ^$stack' # BAD_VAR +check_error 'w w@jiffies ^%ax' # BAD_VAR + +exit 0