[LTP] [PATCH v2] getcpu: Add testcase for EFAULT

Ma Xinjian via ltp
2024-07-18T06:56:31Z

Add a testcase with the arguments point to an invalid address.

Signed-off-by: Ma Xinjian <maxj.fnst@fujitsu.com>
---
runtest/syscalls | 1 +
testcases/kernel/syscalls/getcpu/.gitignore | 1 +
testcases/kernel/syscalls/getcpu/getcpu02.c | 32 +++++++++++++++++++++
3 files changed, 34 insertions(+)
create mode 100644 testcases/kernel/syscalls/getcpu/getcpu02.c

diff --git a/runtest/syscalls b/runtest/syscalls
index 136fd03fa..31922bc9f 100644
--- a/runtest/syscalls
+++ b/runtest/syscalls
@@ -440,6 +440,7 @@ futimesat01 futimesat01
getcontext01 getcontext01

getcpu01 getcpu01
+getcpu02 getcpu02

getcwd01 getcwd01
getcwd02 getcwd02
diff --git a/testcases/kernel/syscalls/getcpu/.gitignore b/testcases/kernel/syscalls/getcpu/.gitignore
index 31fec5d35..cd3022bbb 100644
--- a/testcases/kernel/syscalls/getcpu/.gitignore
+++ b/testcases/kernel/syscalls/getcpu/.gitignore
@@ -1 +1,2 @@
/getcpu01
+/getcpu02
diff --git a/testcases/kernel/syscalls/getcpu/getcpu02.c b/testcases/kernel/syscalls/getcpu/getcpu02.c
new file mode 100644
index 000000000..81a8dd871
--- /dev/null
+++ b/testcases/kernel/syscalls/getcpu/getcpu02.c
@@ -0,0 +1,32 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (c) 2024 FUJITSU LIMITED. All Rights Reserved.
+ * Copyright (c) Linux Test Project, 2024
+ * Author: Ma Xinjian <maxj.fnst@fujitsu.com>
+ *
+ */
+
+/*\
+ * [Description]
+ *
+ * Verify that getcpu(2) fails with
+ *
+ * - EFAULT arguments point outside the calling process's address
+ * space.
+ */
+
+#define _GNU_SOURCE
+#include "tst_test.h"
+#include "lapi/sched.h"
+
+static void run(void)
+{
+ unsigned int cpu_id, node_id = 0;
+
+ TST_EXP_FAIL(getcpu(tst_get_bad_addr(NULL), &node_id), EFAULT);
+ TST_EXP_FAIL(getcpu(&cpu_id, tst_get_bad_addr(NULL)), EFAULT);
+}
+
+static struct tst_test test = {
+ .test_all = run,
+};
--
2.18.1