bug(desktop): orphaned opencode-cli processes on Linux after app exit

Problem

On Linux, the desktop app leaves opencode-cli sidecar processes running after the UI exits or crashes. This accumulates orphaned processes and memory usage. Windows has job objects; Linux had no equivalent cleanup.

Repro

Launch the desktop app.
Open a project / start the local sidecar server.
Close the app or crash/kill the UI.
ps still shows opencode / opencode-cli processes running.

Fix (already implemented in branch)

Add Linux process group management with PR_SET_PDEATHSIG and setsid for child cleanup.
Track PIDs and kill process groups on exit.
Spawn sidecar on Linux with pre_exec calling configure_child_process.
Add libc dependency for prctl/setsid.

Commit: 4bd93a5a5 (fix(desktop): ensure child processes are killed on Linux when app exits).

Verification

Closing the app now sends SIGTERM to the child and its process group; no orphan processes remain.

This issue might be a duplicate of existing issues. Please check:

OpenCode leaves an orphaned process when it itself is killed #11527: OpenCode leaves an orphaned process when it itself is killed
Memory Leak: Orphaned processes when terminal closes without explicit exit #10563: Memory Leak: Orphaned processes when terminal closes without explicit exit
[BUG]: opencode attach processes not terminated when tmux pane is killed (zombie process accumulation) #11225: [BUG]: opencode attach processes not terminated when tmux pane is killed
[Bug] MCP processes not terminated after session ends #6633: [Bug] MCP processes not terminated after session ends
v1.1.6 still has memory bloat - heap not released + MCP orphan processes #7261: v1.1.6 still has memory bloat - heap not released + MCP orphan processes
Memory leak: MCP OAuth transports not closed on retry or cancellation #9153: Memory leak: MCP OAuth transports not closed on retry or cancellation

These issues all describe similar orphaned process problems. The Linux-specific solution you've implemented (using PR_SET_PDEATHSIG and setsid) may help resolve multiple related issues beyond just the desktop app.

Feel free to ignore if this specific Linux desktop app scenario is distinct from these other cases.

To stay organized issues are automatically closed after 90 days of no activity. If the issue is still relevant please open a new one.

Navigation Menu

Repository navigation

bug(desktop): orphaned opencode-cli processes on Linux after app exit #11959

Problem

Repro

Fix (already implemented in branch)

Verification

Metadata

Assignees

Labels

Type

Projects

Milestone

Relationships

Development

bug(desktop): orphaned opencode-cli processes on Linux after app exit #11959

Description

Problem

Repro

Fix (already implemented in branch)

Verification

Activity

github-actions commented on Feb 3, 2026

github-actions commented on Apr 5, 2026

Metadata

Metadata

Assignees

Labels

Type

Projects

Milestone

Relationships

Development

Issue actions