Comment # 6 on bug 90484 from Michel Dänzer

(In reply to Arek Ruśniak from comment #5)
> r237139 is affected too, but need more time(about 100-120 sec)to trigger,
> this is why i didn't see it before. Now i've tried r230876 and time to
> trigger ~ 11 min.

The hangs before r237140 might simply be random, and might have been there for
a long time if not forever. See e.g. bug 90481.