openai/codex · error

failed to reap sandboxed child: {err}

Error message

failed to reap sandboxed child: {err}

What it means

Error "failed to reap sandboxed child: {err}" thrown in openai/codex.

Source

Thrown at codex-rs/linux-sandbox/src/linux_run_main.rs:272

        let signal_forwarders = install_bwrap_signal_forwarders(command_pid);
        signal_mask.restore();
        loop {
            let mut status = 0;
            let reaped_pid = unsafe { libc::waitpid(-1, &mut status, 0) };
            if reaped_pid == command_pid {
                let exit_signal_mask = ForwardedSignalMask::block();
                signal_forwarders.restore();
                exit_signal_mask.restore();
                exit_with_wait_status(status);
            }
            if reaped_pid >= 0 {
                continue;
            }

            let err = std::io::Error::last_os_error();
            if err.raw_os_error() != Some(libc::EINTR) {
                panic!("failed to reap sandboxed child: {err}");
            }
        }
    }

    if file_system_sandbox_policy.has_full_disk_write_access() && !allow_network_for_proxy {
        if let Err(e) = apply_permission_profile_to_current_thread(
            &permission_profile,
            &sandbox_policy_cwd,
            /*apply_landlock_fs*/ false,
            allow_network_for_proxy,
            /*proxy_routed_network*/ false,
        ) {
            panic!("error applying Linux sandbox restrictions: {e:?}");
        }
        exec_or_panic(command);
    }

    if !use_legacy_landlock {

View on GitHub (pinned to 339751715c)

When it happens

Trigger: Thrown at codex-rs/linux-sandbox/src/linux_run_main.rs:272 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of openai/codex@339751715c (2026-08-25). Data as JSON: /api/errors/a4cab235058d3ea5. Report an issue: GitHub.