ChromeDriver crashing with 3+ sessions

[Mitchell Hanberg]

Hi there!

I have noticed that I cannot run ChromeDriver with 3+ concurrent sessions without it crashing. After enough crashing, it breaks down entirely and I have to restart my computer, due to (I think) my computer running out of file handles.

I have attached one of the crash dumps and the --verbose logs.

Also, these are the capabilities that I am using (let me know if these aren't the ideal options to use)

```elixir

    %{
      javascriptEnabled: false,
      loadImages: false,
      version: "",
      rotatable: false,
      takesScreenshot: true,
      cssSelectorsEnabled: true,
      nativeEvents: false,
      platform: "ANY",
      unhandledPromptBehavior: "accept",
      loggingPrefs: %{
        browser: "DEBUG"
      },
      chromeOptions: %{
        args: [
          "--no-sandbox",
          "window-size=1280,800",
          "--disable-gpu",
          "--headless",
          "--fullscreen",
          "--user-agent=#{user_agent}" # user agent with metadata for async transactional tests
        ]
      }
    }
```

Dropbox link to crashdump: https://www.dropbox.com/s/t1g8vavrwk7rtz4/chromedriver_2021-07-25-233108_Mitchells-MacBook-Air.crash?dl=0
Dropbox link to chromedriver.log: https://www.dropbox.com/s/kgvn962gbnsg9hs/chromedriver.log?dl=0

Other relevant details

M1 Macbook air

chromedriver: ChromeDriver 91.0.4472.101 (af52a90bf87030dd1523486a1cd3ae25c5d76c9b-refs/branch-heads/4472@{#1462})
chrome: Google Chrome 92.0.4515.107
language: Elixir

client library: Wallaby

Let me know if I'm doing anything wrong here, thanks!

[Brian Dunn]

Had any luck with this? Similar issue, also Wallaby on an M1. Don't have to reboot, but chromedriver stops answering the phone and all tests fail with econnrefused. Maybe a wallaby specific problem, but it would take some doing to concoct another 3+ simultaneous example.

[Varun Mukka]

We also have this issue happening since Chrome 95, was anyone able to find a solution? Someone resolved the issue by initiating the virtual display for each and every test https://stackoverflow.com/questions/70063074/failing-selenium-tests-on-chrome-in-concurrency-starting-from-chrome-browser-ver

[Brian Dunn]

Varun is that on MacOS? Do you have chromedriver crash reports in Console? I've done some digging on what is happening on my M1 macbook and opened an issue here: https://bugs.chromium.org/p/chromedriver/issues/detail?id=4045