[Bug]: Renderer process uses high CPU while main process crashes

[haoxi911]

Preflight Checklist

• I have read the Contributing Guidelines for this project.
• I agree to follow the Code of Conduct that this project adheres to.
• I have searched the issue tracker for a bug report that matches the one I want to file, without success.

Electron Version

20.3.0

What operating system are you using?

macOS

Operating System Version

macOS Monterey 12.6

What arch are you using?

x64

Last Known Working Electron version

N/A

Expected Behavior

All Electron processes will crash and quit, CPU usage should be normal even if the renderer process can't quit itself.

Actual Behavior

Renderer process stays with a very high CPU usage, after main process crashed.

Testcase Gist URL

No response

Additional Information

Here are the reproducible steps, it should be applicable to any Electron apps:

• Find a USB flash drive, load an Electron app onto the drive.
• Open the Electron app, unplug the USB flash drive.
• Observe a crash of the app.
• Open Activity Monitor, look for the renderer process and observe a high CPU usage.

More seriously, I am not able to force quit this renderer process, the only way I can get rid of it is rebooting the system.

[haoxi911]

Closed. It only happens when crashReporter is enabled, I believe the root cause was the chrome_crashpad_handler process as it was a part of the app bundle and stored on the USB flash drive too.