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From: Steven Rostedt <rostedt@goodmis.org>
To: linux-kernel@vger.kernel.org, linux-trace-devel@vger.kernel.org
Cc: Ingo Molnar <mingo@kernel.org>,
	Andrew Morton <akpm@linux-foundation.org>,
	Masami Hiramatsu <mhiramat@kernel.org>,
	"Tzvetomir Stoyanov" <tz.stoyanov@gmail.com>,
	Tom Zanussi <zanussi@kernel.org>, Shuah Khan <shuah@kernel.org>,
	Shuah Khan <skhan@linuxfoundation.org>,
	linux-kselftest@vger.kernel.org
Subject: [PATCH v9 6/6] selftests/ftrace: Add selftest for testing duplicate eprobes and kprobes
Date: Fri, 20 Aug 2021 16:46:50 -0400	[thread overview]
Message-ID: <20210820204742.653288346@goodmis.org> (raw)
In-Reply-To: <20210820204644.546662591@goodmis.org>

From: "Steven Rostedt (VMware)" <rostedt@goodmis.org>

Add a selftest that makes sure that eprobes and kprobes can not be created
with the same group and name as existing events.

Link: https://lore.kernel.org/linux-kselftest/20210819152825.715290342@goodmis.org/

Cc: Shuah Khan <shuah@kernel.org>
Cc: Shuah Khan <skhan@linuxfoundation.org>
Cc: linux-kselftest@vger.kernel.org
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
---
 .../ftrace/test.d/dynevent/test_duplicates.tc | 38 +++++++++++++++++++
 1 file changed, 38 insertions(+)
 create mode 100644 tools/testing/selftests/ftrace/test.d/dynevent/test_duplicates.tc

diff --git a/tools/testing/selftests/ftrace/test.d/dynevent/test_duplicates.tc b/tools/testing/selftests/ftrace/test.d/dynevent/test_duplicates.tc
new file mode 100644
index 000000000000..db522577ff78
--- /dev/null
+++ b/tools/testing/selftests/ftrace/test.d/dynevent/test_duplicates.tc
@@ -0,0 +1,38 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+# description: Generic dynamic event - check if duplicate events are caught
+# requires: dynamic_events "e[:[<group>/]<event>] <attached-group>.<attached-event> [<args>]":README
+
+echo 0 > events/enable
+
+HAVE_KPROBES=0
+
+if [ -f kprobe_events ]; then
+	HAVE_KPROBES=1
+fi
+
+clear_dynamic_events
+
+# first create dynamic events for eprobes and kprobes.
+
+echo 'e:egroup/eevent syscalls/sys_enter_openat file=+0($filename):ustring' >> dynamic_events
+
+# Test eprobe for same eprobe, existing kprobe and existing event
+! echo 'e:egroup/eevent syscalls/sys_enter_openat file=+0($filename):ustring' >> dynamic_events
+! echo 'e:syscalls/sys_enter_open syscalls/sys_enter_openat file=+0($filename):ustring' >> dynamic_events
+
+if [ $HAVE_KPROBES -eq 1 ]; then
+    echo 'p:kgroup/kevent vfs_open file=+0($arg2)' >> dynamic_events
+    ! echo 'e:kgroup/kevent syscalls/sys_enter_openat file=+0($filename):ustring' >> dynamic_events
+
+# Test kprobe for same kprobe, existing eprobe and existing event
+    ! echo 'p:kgroup/kevent vfs_open file=+0($arg2)' >> dynamic_events
+    ! echo 'p:egroup/eevent vfs_open file=+0($arg2)' >> dynamic_events
+    ! echo 'p:syscalls/sys_enter_open vfs_open file=+0($arg2)' >> dynamic_events
+
+    echo '-:kgroup/kevent' >> dynamic_events
+fi
+
+echo '-:egroup/eevent' >> dynamic_events
+
+clear_trace
-- 
2.30.2

  parent reply	other threads:[~2021-08-20 20:48 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-20 20:46 [PATCH v9 0/6] tracing: Creation of event probe Steven Rostedt
2021-08-20 20:46 ` [PATCH v9 1/6] tracing: Add a probe that attaches to trace events Steven Rostedt
2021-08-20 20:46 ` [PATCH v9 2/6] selftests/ftrace: Add clear_dynamic_events() to test cases Steven Rostedt
2021-08-20 20:46 ` [PATCH v9 3/6] selftests/ftrace: Fix requirement check of README file Steven Rostedt
2021-08-21  1:43   ` Masami Hiramatsu
2021-08-20 20:46 ` [PATCH v9 4/6] selftests/ftrace: Add test case to test adding and removing of event probe Steven Rostedt
2021-08-21  1:40   ` Masami Hiramatsu
2021-08-20 20:46 ` [PATCH v9 5/6] selftests/ftrace: Add selftest for testing eprobe events on synthetic events Steven Rostedt
2021-08-21  1:38   ` Masami Hiramatsu
2021-08-20 20:46 ` Steven Rostedt [this message]
2021-08-21  1:41   ` [PATCH v9 6/6] selftests/ftrace: Add selftest for testing duplicate eprobes and kprobes Masami Hiramatsu
2021-08-21  2:18     ` Steven Rostedt

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