{"repo":"NousResearch/hermes-agent","public_id":"8340","display_label":"Terminal hang when backgrounding child processes","summary":"A bug where the terminal tool hangs indefinitely when commands launch background child processes, along with multiple fix attempts addressing session and process group handling to prevent the hang.","subsystem":null,"counts":{"members":3,"open_issues":0,"open_issues_distinct":0,"open_prs":0,"closed_issues":1,"merged_prs":1,"attempt_prs":1},"landed_fix":{"status":"merged_to_main","basis":"structural","pr":12647,"merged_at":"2026-04-19T18:27:51+00:00"},"resolution":{"state":"resolved","by":"pr-12647"},"freshness":{"state":"stale","last_verified_at":"2026-04-19T18:27:51+00:00","is_stale":true},"grouping":{"backbone":"STRUCTURAL_SPANNING","link_density":0.6666666666666666},"fix_edges":[{"issue_number":8340,"pr_number":12647,"tier":"verified","basis":"closing_ref","confidence":0.95,"recoverable_from_timeline":true,"pr_merged_at":"2026-04-19T18:27:51+00:00"}],"members":[{"kind":"issue","number":8340,"title":"[Bug]: Terminal tool hangs indefinitely when using setsid + disown pattern to launch background services","url":null,"state":"closed"},{"kind":"pr","number":8399,"title":"fix(environments/local):  #8340 prevent terminal hang by replacing preexec_fn with start_new_session ","url":null,"state":"closed","close_reason":{"refs":[{"kind":"pr","value":"#12647","number":12647},{"kind":"pr","value":"#8340","number":8340}],"category":"partial_fix","implication":"needs_llm"},"merged":false},{"kind":"pr","number":12647,"title":"fix(environments): prevent terminal hang when commands background children (#8340)","url":null,"state":"merged","close_reason":{"category":"merged"},"merged":true,"is_fix_pr":true,"fix_tier":"verified","files_changed":["tests/tools/test_local_background_child_hang.py","tools/environments/base.py"]}],"trust":{"default_tier":"verified","includes_suggested":false}}