High CPU and memory usage on a specific condition on Linux

[hikyae]

Code editor

Vim 9.1

Platform

Arch Linux

Version

5.4.3

What steps will reproduce the bug?

1. Create a directory
   mkdir a
2. Move to the directory
   cd a
3. Create a sub directory whose name begins with "."(dot)
   mkdir .a
4. In the sub directory, create a symbolic link that refers to root directory
   ln -s / .a/a
5. Create the minimum vimrc(here it's named reproduce.vim) as follows (I use vim-plug for plugin manager)

call plug#begin()
Plug 'prabirshrestha/vim-lsp'
call plug#end()
if executable('bash-language-server')
  autocmd User lsp_setup call lsp#register_server({
        \ 'name': 'bash-language-server',
        \ 'cmd': {server_info->[&shell, &shellcmdflag, 'bash-language-server start']},
        \ 'allowlist': ['sh', 'bash'],
        \ })
endif

6. Create and open a simple shell script with vim -u reproduce.vim -N justecho.sh

#!/bin/sh

echo hi
 

7. Just wait a few seconds and the CPU fan starts to spin up

How often does it reproduce? Is there a required condition?

Those steps above always reproduce the issue.

What is the expected behavior?

My CPU is still calm

What do you see instead?

Wasted high CPU and memory usage

Additional information

Renaming the hidden directory to non-hidden directory avoids the phenomenon.
mv .a a

I've found the bug while I was editing a shell script in my home directory which has .wine directory.

[PeterSaan]

I'm having the same issue with nvim. It appears that something with shellcheck is causing the problem.
I'll leave a link to what seems to be the same issue on shellcheck's repo here