Codex stopped working with github actions openai/codex-action@v1

Resolved 💬 5 comments Opened Jan 15, 2026 by novakDev Closed Jan 15, 2026

💡 Likely answer: A maintainer (etraut-openai, contributor) responded on this thread — see the highlighted reply below.

What version of Codex is running?

0.84.0

What subscription do you have?

ChatGPT Business

Which model were you using?

_No response_

What platform is your computer?

_No response_

What terminal emulator and version are you using (if applicable)?

_No response_

What issue are you seeing?

Yesterday our github actions codex script worked fine. It used version 0.80.0 . Today it's taking new version of 0.84.0 which make Landlock failure.

Action:

jobs:
  codex:
    runs-on: ubuntu-latest
    permissions:
      contents: read
    outputs:
      final_message: ${{ steps.run_codex.outputs['final-message'] }}
    steps:
...
- name: Run Codex
        id: run_codex
        uses: openai/codex-action@v1
        with:
          openai-api-key: ${{ secrets.OPENAI_API_KEY }}
          prompt: |
            This is PR #${{ github.event.pull_request.number }} for ${{ github.repository }}.
            Base SHA: ${{ github.event.pull_request.base.sha }}
            Head SHA: ${{ github.event.pull_request.head.sha }}

            Review ONLY the changes introduced by the PR.
            Suggest any improvements, potential bugs, or issues.
            Be concise and specific in your feedback.

            Pull request title and body:
            ----
            ${{ github.event.pull_request.title }}
            ${{ github.event.pull_request.body }}

Error log:

thinking
**Reviewing code changes between SHAs**
2026-01-15T09:31:16.934869Z ERROR codex_core::codex: needs_follow_up: true
exec
/bin/bash -lc 'git diff --stat 4f6af8e90f6d7a6e2269b40f5d13518b050bd72b 44c207e5d208a014711742250deee789d3d80814' in /home/runner/work/api/api exited 101 in 3ms:

thread 'main' panicked at linux-sandbox/src/linux_run_main.rs:30:9:
error running landlock: Io(Os { code: 13, kind: PermissionDenied, message: "Permission denied" })
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

What steps can reproduce the bug?

Create github action from openai/codex-action@v1 codex readme and it should fail when using 0.84.0 version.

What is the expected behavior?

_No response_

Additional information

_No response_

View original on GitHub ↗

5 Comments

Binary-Refinery · 7 months ago

i got the same error today:

thread 'main' panicked at linux-sandbox/src/linux_run_main.rs:30:9:
error running landlock: Io(Os { code: 13, kind: PermissionDenied, message: "Permission denied" })
note: run with RUST_BACKTRACE=1 environment variable to display a backtrace
exec
/bin/bash -c 'ls /' in /home/vsts/work/1/s2026-01-15T13:52:56.324720Z ERROR codex_core::codex: needs_follow_up: true
exited 101 in 4ms:

thread 'main' panicked at linux-sandbox/src/linux_run_main.rs:30:9:
error running landlock: Io(Os { code: 13, kind: PermissionDenied, message: "Permission denied" })
note: run with RUST_BACKTRACE=1 environment variable to display a backtrace
codex
Blocked by sandbox: every shell command (pwd, ls, even true) fails with landlock Permission denied before execution, so I can’t read the repo or create the required pytest file. No files were changed. Please re-run in an environment where shell access works, and I’ll add the LIVE-CP-05 integration test with the specified markers/spec/docstring.
2026-01-15T13:53:27.938140Z ERROR codex_core::codex: needs_follow_up: false
tokens used
29,602

echo '[INFO] Codex Generate Exit-Code: 0'
echo '[DBG] ls -R tst/core/plugins/supervisor'

[INFO] Codex Generate Exit-Code: 0
[DBG] ls -R tst/core/plugins/supervisor

novakDev · 7 months ago

i got the same error today: thread 'main' panicked at linux-sandbox/src/linux_run_main.rs:30:9: error running landlock: Io(Os { code: 13, kind: PermissionDenied, message: "Permission denied" }) note: run with RUST_BACKTRACE=1 environment variable to display a backtrace exec /bin/bash -c 'ls /' in /home/vsts/work/1/s2026-01-15T13:52:56.324720Z ERROR codex_core::codex: needs_follow_up: true exited 101 in 4ms: thread 'main' panicked at linux-sandbox/src/linux_run_main.rs:30:9: error running landlock: Io(Os { code: 13, kind: PermissionDenied, message: "Permission denied" }) note: run with RUST_BACKTRACE=1 environment variable to display a backtrace codex Blocked by sandbox: every shell command (pwd, ls, even true) fails with landlock Permission denied before execution, so I can’t read the repo or create the required pytest file. No files were changed. Please re-run in an environment where shell access works, and I’ll add the LIVE-CP-05 integration test with the specified markers/spec/docstring. 2026-01-15T13:53:27.938140Z ERROR codex_core::codex: needs_follow_up: false tokens used 29,602 echo '[INFO] Codex Generate Exit-Code: 0' echo '[DBG] ls -R tst/core/plugins/supervisor' [INFO] Codex Generate Exit-Code: 0 [DBG] ls -R tst/core/plugins/supervisor

Quick solution for this one is to set previous version:

codex-version: "0.80.0"

Binary-Refinery · 7 months ago

Do you know what exactly the reason behind it is?

etraut-openai contributor · 7 months ago

This should be addressed in 0.85, which has been published. If you're still seeing problems, let us know.

novakDev · 7 months ago

Everything works fine with version 0.86.0. Thanks for the quick fix.