Comment # 6 on bug 1165535 from Sebastian Chlad

Since we do not have much logs and there is no easy and known way of
reproducing this problem, devising a test case won't be straightforward for
sure.

However having some look into the relevant code paths and see if we could come
up with some stress tests, hitting as similar condition as possible, might be
worth doing.

I will do so then starting from checking if there is any test touching these
specific code paths.