On (23/04/16 13:27), Yu Zhao wrote: > > Hi, > > > > Did you bisect it down to this series? > > Not exactly -- since this series was the only suspect I had, I cherry > picked it to v6.3-rc6 and verified it is the culprit. Can't reproduce it yet. One of the theories is that get_fullness_group() maybe returns an invalid index, but I don't immediately see how would it do so. Is the problem reproducible? Do you run some specific test?