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76d46ad2c5
Add tests for the new CLONE_AUTOREAP clone3() flag: - autoreap_without_pidfd: CLONE_AUTOREAP without CLONE_PIDFD works (fire-and-forget) - autoreap_rejects_exit_signal: CLONE_AUTOREAP with non-zero exit_signal fails - autoreap_rejects_parent: CLONE_AUTOREAP with CLONE_PARENT fails - autoreap_rejects_thread: CLONE_AUTOREAP with CLONE_THREAD fails - autoreap_basic: child exits, pidfd poll works, PIDFD_GET_INFO returns correct exit code, waitpid() returns -ECHILD - autoreap_signaled: child killed by signal, exit info correct via pidfd - autoreap_reparent: autoreap grandchild reparented to subreaper still auto-reaps - autoreap_multithreaded: autoreap process with sub-threads auto-reaps after last thread exits - autoreap_no_inherit: grandchild forked without CLONE_AUTOREAP becomes a regular zombie Link: https://patch.msgid.link/20260226-work-pidfs-autoreap-v5-4-d148b984a989@kernel.org Signed-off-by: Christian Brauner <brauner@kernel.org>