NousResearch/hermes-agent

Fix unsafe process group signaling edge cases

Cluster 119149 · agent. Data as of 2026-10-27 11:58 UTC

1 open item. Fix merged in #131890 on 5 Oct 2026. Check it covers your case.

open issues

open PR

items grouped

Known?: Yes. 3 related items grouped here, 1 issue already closed.
Fix event: A fix was merged to main in PR #131890. Check it covers your case. No release data is tracked.
Tracker: The maintainers' tracker marks this resolved, deciding PR #131890. That is separate from the fix event.
Still open: 0 issues and 1 PR.

Next step: read #131890, then check it covers your case.

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These items address a bug where killpg may signal a process group that the child process does not actually lead, covering shared group or recycled PID scenarios. The fix restricts process group signaling to cases where the child is confirmed to lead the group.

Open issues0

No open issues.

Open PRs1

PR#119150fix(processes): signal a process group only when the child leads it

Fixes on record

Merged to main. A stamp counts the issues a fix is linked to.

#131890 fix(processes): signal a process group only when the child leads it [risk 0.35]

merged to main

files: agent/verify/runner.py, hermes_cli/pty_bridge.py, tests/hermes_cli/test_pty_bridge.py, tests/tools/test_browser_process_tree.py, tests/tools/test_local_setsid_descendant_sweep.py, tests/tools/test_process_registry.py, tests/verify/test_environment_and_runner.py, tools/browser_tool_lifecycle.py, tools/process_registry.py

Closed issues · 1

Closed#119149killpg fallbacks signal a process group the child may not lead (shared group / recycled PID)

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Link evidence (structural links throughout): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.
Pairwise link density 1.00: the share of item pairs that carry a link, counting a structural link in full and a relevance-only link at 0.36. 1.00 means every pair is linked.

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At a glance

Subsystem: agent
Merged PRs: #131890
Closed issues: 1
Attempts: 0 PRs closed without merging
Fix link checked: 5 Oct 2026

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