Óscar Fuentes via "Bug reports for GNU Emacs, the Swiss army knife of
text editors" <bug-gnu-emacs@gnu.org> writes:

> On a long-lived emacs session (two weeks of intensive use), while
> reverting a versioned file with C-x v u (something that I did multiple
> times before on the same session) Emacs entered an infinite loop using
> 100% CPU, ignoring C-g and SIGUSR2 and had to be killed eventually after
> attaching gdb and obtaining the backtraces below.

Thanks. That's a recursive call to igc_on_idle from Lisp being called
whle it is running. Looks like something like this is needed: