Unverified Commit 4fc3f73c authored by Christian Brauner's avatar Christian Brauner
Browse files

selftest/pidfd: add test for thread-group leader pidfd open for thread 

Verify that we report ENOENT when userspace tries to create a
thread-group leader pidfd for a thread pidfd that isn't a thread-group
leader.

Link: https://lore.kernel.org/r/20250403-work-pidfd-fixes-v1-4-a123b6ed6716@kernel.org


Reviewed-by: default avatarOleg Nesterov <oleg@redhat.com>
Signed-off-by: default avatarChristian Brauner <brauner@kernel.org>
parent 8cf4b738

tools/testing/selftests/pidfd/pidfd_info_test.c

+1 −0
Original line number Diff line number Diff line
@@ -299,6 +299,7 @@ TEST_F(pidfd_info, thread_group) 
	/* Opening a thread as a thread-group leader must fail. */

	pidfd_thread = sys_pidfd_open(pid_thread, 0);

	ASSERT_LT(pidfd_thread, 0);

	ASSERT_EQ(errno, ENOENT);



	/* Opening a thread as a PIDFD_THREAD must succeed. */

	pidfd_thread = sys_pidfd_open(pid_thread, PIDFD_THREAD);