This patch changes the test semantic and then cannot work on my test
environment. On which kernel did you run test? Do you use Yama or
something similar?
On 28/11/2022 03:04, limin wrote:
Tests PTRACE_ATTACH and PTRACE_MODE_READ on the parent,
trace parent return -1 when child== 0
How to reproduce warning:
$ make -C tools/testing/selftests TARGETS=landlock run_tests
Signed-off-by: limin <limin100@xxxxxxxxxx>
---
tools/testing/selftests/landlock/ptrace_test.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/tools/testing/selftests/landlock/ptrace_test.c b/tools/testing/selftests/landlock/ptrace_test.c
index c28ef98ff3ac..88c4dc63eea0 100644
--- a/tools/testing/selftests/landlock/ptrace_test.c
+++ b/tools/testing/selftests/landlock/ptrace_test.c
@@ -267,12 +267,11 @@ TEST_F(hierarchy, trace)
/* Tests PTRACE_ATTACH and PTRACE_MODE_READ on the parent. */
err_proc_read = test_ptrace_read(parent);
ret = ptrace(PTRACE_ATTACH, parent, NULL, 0);
+ EXPECT_EQ(-1, ret);
+ EXPECT_EQ(EPERM, errno);
if (variant->domain_child) {
- EXPECT_EQ(-1, ret);
- EXPECT_EQ(EPERM, errno);
EXPECT_EQ(EACCES, err_proc_read);
} else {
- EXPECT_EQ(0, ret);
EXPECT_EQ(0, err_proc_read);
}
if (ret == 0) {
