[<prev] [next>] [<thread-prev] [day] [month] [year] [list]
Message-Id: <20230825140519.34297-3-flaniel@linux.microsoft.com>
Date: Fri, 25 Aug 2023 16:05:19 +0200
From: Francis Laniel <flaniel@...ux.microsoft.com>
To: linux-kernel@...r.kernel.org
Cc: Masami Hiramatsu <mhiramat@...nel.org>,
linux-trace-kernel@...r.kernel.org,
Francis Laniel <flaniel@...ux.microsoft.com>,
Steven Rostedt <rostedt@...dmis.org>,
Shuah Khan <shuah@...nel.org>, linux-kselftest@...r.kernel.org
Subject: [PATCH v4 2/2] selftests/ftrace: Add new test case which checks non unique symbol
If name_show() is non unique, this test will try to install a kprobe on this
function which should fail returning EADDRNOTAVAIL.
On kernel where name_show() is not unique, this test is skipped.
Signed-off-by: Francis Laniel <flaniel@...ux.microsoft.com>
---
.../ftrace/test.d/kprobe/kprobe_non_uniq_symbol.tc | 13 +++++++++++++
1 file changed, 13 insertions(+)
create mode 100644 tools/testing/selftests/ftrace/test.d/kprobe/kprobe_non_uniq_symbol.tc
diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_non_uniq_symbol.tc b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_non_uniq_symbol.tc
new file mode 100644
index 000000000000..bc9514428dba
--- /dev/null
+++ b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_non_uniq_symbol.tc
@@ -0,0 +1,13 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+# description: Test failure of registering kprobe on non unique symbol
+# requires: kprobe_events
+
+SYMBOL='name_show'
+
+# We skip this test on kernel where SYMBOL is unique or does not exist.
+if [ "$(grep -c -E "[[:alnum:]]+ t ${SYMBOL}" /proc/kallsyms)" -le '1' ]; then
+ exit_unsupported
+fi
+
+! echo "p:test_non_unique ${SYMBOL}" > kprobe_events
--
2.34.1
Powered by blists - more mailing lists