Opencode crashes with illegal instruction #45869
Description
Description
I launched 2 sessions in the background, and when I tried to start another one new, then Opencode crashes
Error: Illegal instruction at address 0x7FF752D3BF14
Full console:
PS C:\Users\Lamio>
opencode
============================================================
Bun v1.3.14 (0d9b296a) Windows x64 (baseline)
Windows v.win11_dt
CPU: sse42 avx avx2
Args: "C:\Users\Lamio\AppData\Roaming\npm\node_modules\opencode-ai\bin\opencode.exe" "--user-agent=opencode/1.18.25" "--use-system-ca" "--"
Features: jsc standalone_executable
Elapsed: 2036ms | User: 0ms | Sys: 31ms
RSS: 72.90MB | Peak: 72.90MB | Commit: 115.58MB | Faults: 18008
panic(main thread): __Illegal instruction at address 0x7FF752D3BF14__
oh no: Bun has crashed. This indicates a bug in Bun, not your code.Plugins
No plugins were installed
OpenCode version
1.18.25
Steps to reproduce
1.start multiple sessions in the background
2.start new session
Then you can't start a new session
Screenshot and/or share link
Operating System
Windows 11
Terminal
Windows Powershell
Metadata
Metadata
Assignees
Labels
No labels
Activity
github-actions commentedon Aug 28, 2026
This issue might be a duplicate of existing issues. Please check:
If your crash is reproducible specifically when starting a third session while two are already running in the background (rather than after long runtime or heavy memory usage), it may be a distinct trigger worth keeping open — please let maintainers know.
thdxr commentedon Oct 11, 2026
Thanks for the report! OpenCode 2.0 is now out and development is focused on V2, so we're closing issues filed against OpenCode 1. Please upgrade (
opencode upgrade --major, details: https://anoma.ly/notes/opencode-2-0), and if this is still relevant on 2.0, reopen this issue or open a new one with your 2.0 version.— from 𝕺𝖕𝖊𝖓𝕮𝖔𝖉𝖊