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gemini-cli - 💡(How to fix) Fix ioctl(2) failed, EBADF (Bad File Descriptor)

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Error Message

The CLI crashes with a critical error: Error: ioctl(2) failed, EBADF. This

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What happened?

The CLI crashes with a critical error: Error: ioctl(2) failed, EBADF. This happens consistently when running tools with high text output (like ffuf or nuclei) or when the terminal window is resized during a long-running command.

What did you expect to happen?

The CLI should handle high output volume and terminal window resizing without a kernel-level ioctl failure.

Client information

  • CLI Version: 0.44.0
  • Git Commit: 1000b33d4
  • Session ID: 08c540b0-f6d5-4a25-aaa2-25db09fedd22
  • Operating System: linux v22.14.0
  • Sandbox Environment: no sandbox
  • Model Version: gemini-3-flash-preview
  • Auth Type: oauth-personal
  • Memory Usage: 272.0 MB
  • Terminal Name: VTE(7600)
  • Terminal Background: #ffffff
  • Kitty Keyboard Protocol: Unsupported

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Anything else we need to know?

The crash seems related to node-pty failing to handle terminal resize events while the stdout buffer is being heavily used by subprocesses. It forces the entire Gemini CLI session to exit.

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