NousResearch/hermes-agent

macOS segfault fix in subprocess execution tools

Cluster 46789 · apps/desktop. Data as of 2026-10-28 11:56 UTC

Nothing open on GitHub. Fix merged in #53278 on 26 Jun 2026. Check it covers your case.

open issues

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items grouped

Known?: Yes. 3 related items grouped here, 1 issue already closed.
Fix event: A fix was merged to main in PR #53278. Check it covers your case. No release data is tracked.
Tracker: The maintainers' tracker marks this resolved, deciding PR #53278. That is separate from the fix event.
Still open: Nothing open on GitHub.

Next step: read #53278, then check it covers your case.

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A bug report and related fix attempts address SIGSEGV/exit code -11 crashes in the desktop app's tool execution (terminal, execute_code, read_file) on macOS, attributed to unsafe use of preexec_fn in multi-threaded processes, with a proposed switch to start_new_session.

Open issues0

No open issues.

Open PRs0

No open pull requests.

Fixes on record

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

#53278 fix(tools): use start_new_session instead of preexec_fn to prevent SIGSEGV in multi-threaded processes

merged to main

files: plugins/platforms/whatsapp/adapter.py, tests/tools/test_windows_compat.py, tools/code_execution_tool.py, tools/environments/local.py, tools/process_registry.py

1 PR closed without merging

From the close comments: merged via another change 1

#46868 fix(tools): use start_new_session instead of preexec_fn to prevent SIGSEGV in multi-threaded processes · merged via another change → #53278

Closed issues · 1

Closed#46789[Bug]: Desktop app process execution segfaults (exit code -11) on macOS — terminal, execute_code, read_file all fail

How this cluster was grouped

Link evidence (structural links throughout): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.
Pairwise link density 0.67: 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: apps/desktop
Merged PRs: #53278
Closed issues: 1
Attempts: 1 PR closed without merging
Fix link checked: 26 Jun 2026

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