{"record":{"id":"4223e14c3637e464","repo":"Hmbown/CodeWhale","slug":"task-task-id-not-found","errorCode":null,"errorMessage":"Task {task_id} not found","messagePattern":"Task (.+?) not found","errorType":"validation","errorClass":"anyhow::Error","httpStatus":null,"severity":"error","filePath":"crates/tui/src/tools/shell.rs","lineNumber":1720,"sourceCode":"                \"foreground_background_requested\",\n                &self.foreground_background_requested,\n            )\n            .finish()\n    }\n}\n\nimpl ShellManager {\n    fn require_session_owner(&self, task_id: &str, active_session_id: &str) -> Result<()> {\n        let owned = self.processes.get(task_id).is_some_and(|shell| {\n            !active_session_id.is_empty() && shell.owner_session_id == active_session_id\n        }) || self.stale_jobs.get(task_id).is_some_and(|job| {\n            !active_session_id.is_empty() && job.owner_session_id == active_session_id\n        });\n        if owned {\n            Ok(())\n        } else {\n            // Do not disclose whether the id exists in another session.\n            Err(anyhow!(\"Task {task_id} not found\"))\n        }\n    }\n\n    /// Create a new `ShellManager` with default (no sandbox) policy.\n    pub fn new(workspace: PathBuf) -> Self {\n        Self {\n            processes: HashMap::new(),\n            stale_jobs: HashMap::new(),\n            default_workspace: workspace,\n            sandbox_manager: SandboxManager::new(),\n            sandbox_policy: ExecutionSandboxPolicy::default(),\n            foreground_background_requested: false,\n            output_spill_dir: None,\n        }\n    }\n\n    /// Point lowercase-`bash` complete-output spill files at `dir` instead of\n    /// the process temp dir. Tests use a nonexistent dir to simulate a full or","sourceCodeStart":1702,"sourceCodeEnd":1738,"githubUrl":"https://github.com/Hmbown/CodeWhale/blob/0c42157ee52f9d55af2b506d71b46249910f77d3/crates/tui/src/tools/shell.rs#L1702-L1738","documentation":"ShellManager::require_session_owner gates shell-task operations: the task id must exist in processes or stale_jobs AND its owner_session_id must equal the non-empty active session id. On failure it returns 'Task {task_id} not found' deliberately — the same message whether the id does not exist at all or belongs to another session — so callers cannot probe for other sessions' task ids.","triggerScenarios":"Any shell operation (stdin, output poll, kill, status) referencing a task id created under a different owner session, a task from a previous run before restart, or a plain typo. Also when active_session_id is empty (unset), ownership can never hold.","commonSituations":"After resume/fork, an agent reuses a shell task id from the pre-fork session; multiple agents share a ShellManager and one references another's background task; stale ids persisted in a transcript get replayed.","solutions":["Use only shell task ids returned by execute calls in the current session.","After resume/fork/restart, re-run long-lived commands instead of addressing old task ids.","Treat this message as authoritative 'not yours or not there' — do not probe variations of the id.","Ensure the active session id is properly established before issuing shell operations."],"exampleFix":null,"handlingStrategy":"validation","validationCode":"// Only reference shell tasks minted in this session.\nlet owned = shell_manager.task_ids_owned_by(active_session_id);\nanyhow::ensure!(\n    owned.contains(&task_id),\n    \"task {task_id} is not owned by this session\"\n);\nshell_manager.poll_output(active_session_id, &task_id)?;","typeGuard":null,"tryCatchPattern":"match shell_op(&task_id) {\n    Ok(out) => out,\n    Err(e) if e.to_string().contains(\"not found\") => {\n        // Same message for foreign-owned and missing ids; do not probe further.\n        tracing::info!(\"shell task {task_id} not available to this session; re-running command\");\n        rerun_command_fresh().await?\n    }\n    Err(e) => return Err(e),\n};","preventionTips":["Track shell task ids per session and discard them on restart/resume/fork boundaries.","Never replay shell task ids copied from old transcripts — re-execute the command instead.","Assume 'not found' means 'not yours' as well: probing id variants leaks nothing by design."],"tags":["shell","session-ownership","permission","not-found","security"],"backgroundTag":"permission-denied","analyzedSha":"0c42157ee52f9d55af2b506d71b46249910f77d3","analyzedAt":"2026-08-20T21:50:45.477Z","contentChangedAt":null,"schemaVersion":2},"datasetVersion":"2026-09-14T00:17:10.932Z"}