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Subject[PATCH 3/3] selftests/clone3: check that all pids are released on error paths
Date
This is a regression test case for an issue when pids have not been
released on error paths.

Signed-off-by: Andrei Vagin <avagin@gmail.com>
---
tools/testing/selftests/clone3/clone3_set_tid.c | 16 ++++++++++++++--
1 file changed, 14 insertions(+), 2 deletions(-)

diff --git a/tools/testing/selftests/clone3/clone3_set_tid.c b/tools/testing/selftests/clone3/clone3_set_tid.c
index 9c19bae03661..c6309f5d7d88 100644
--- a/tools/testing/selftests/clone3/clone3_set_tid.c
+++ b/tools/testing/selftests/clone3/clone3_set_tid.c
@@ -160,7 +160,7 @@ int main(int argc, char *argv[])
ksft_exit_fail_msg("pipe() failed\n");

ksft_print_header();
- ksft_set_plan(27);
+ ksft_set_plan(29);

f = fopen("/proc/sys/kernel/pid_max", "r");
if (f == NULL)
@@ -290,6 +290,18 @@ int main(int argc, char *argv[])
/* Let's create a PID 1 */
ns_pid = fork();
if (ns_pid == 0) {
+ /*
+ * This and the next test cases check that all pid-s are
+ * released on error paths.
+ */
+ set_tid[0] = 43;
+ set_tid[1] = -1;
+ test_clone3_set_tid(set_tid, 2, 0, -EINVAL, 0, 0);
+
+ set_tid[0] = 43;
+ set_tid[1] = pid;
+ test_clone3_set_tid(set_tid, 2, 0, 0, 43, 0);
+
ksft_print_msg("Child in PID namespace has PID %d\n", getpid());
set_tid[0] = 2;
test_clone3_set_tid(set_tid, 1, 0, 0, 2, 0);
@@ -366,7 +378,7 @@ int main(int argc, char *argv[])
if (!WIFEXITED(status))
ksft_test_result_fail("Child error\n");

- ksft_cnt.ksft_pass += 4 - (ksft_cnt.ksft_fail - WEXITSTATUS(status));
+ ksft_cnt.ksft_pass += 6 - (ksft_cnt.ksft_fail - WEXITSTATUS(status));
ksft_cnt.ksft_fail = WEXITSTATUS(status);

if (ns3 == pid && ns2 == 42 && ns1 == 1)
--
2.23.0
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