An extraordinary row between the country's most senior law officers has reached boiling point after the government's top legal adviser released documents suggesting Attorney-General George Brandis misled Parliament.

Senator Brandis has come under fire over a contentious move to restrict his ministerial colleagues' ability to seek independent legal advice directly from the Solicitor-General, Justin Gleeson, SC.

Attorney-General George Brandis has faced calls to resign after Labor accused him of misleading Parliament. Credit:Fairfax Media

Under changes made days before the federal election, no minister – including the prime minister – can seek advice from Mr Gleeson "except with the consent of the Attorney-General".

Legal experts have expressed concern the change is a power grab that restricts the independence of the Solicitor-General and reflects an irreparable breakdown in the relationship between the men.