• VSCode Version: 1.17.0 (be377c0)
• OS Version: Ubuntu 16.04 LTS

Steps to Reproduce:

1. Set "files.useExperimentalFileWatcher": true and close VS Code
2. Create a symlink to root directory (must be an absolute link, not relative!):

$ mkdir loop
$ ln -s / loop/root

3. Open directory containing that symlink in VS Code:

$ code --disable-extensions loop

4. Watch processes - one of vs code processes takes high CPU

Reproduces without extensions: Yes

See also: #3998