rootsh running issue in normal user
Solution 1:
What's happening here is that you are getting caught in a loop - have a look at this output from pstree
sshd───bash───rootsh───bash───rootsh───bash───rootsh...
Each time you run bash, it runs .bashrc which runs rootsh which is a wrapper around bash so it runs bash which runs .basrc ...
You could put the invocation in .bash_profile, then it will only run for login shells
~/.bash_profile
The personal initialization file, executed for login shells
~/.bashrc
The individual per-interactive-shell startup file
And the output from pstree with this in place
sshd───bash───rootsh───bash───pstree
Don't use rootsh -i
though in your .bash_profile.