[Cake] lockup with multiple cake instances on 3.16.7

[Toke Høiland-Jørgensen]

(crossed streams; but yeah, basically the same conclusion)

> Do you think this is a correct patch?

Well, the "correct patch" would be to get upstream fixed :)

But yeah, I don't think it would hurt to carry this as a workaround
patch until that happens...

I guess you could try running it for a while and see if anything else
blows up? You seem to have quite a knack for getting it to fail... ;)

-Toke