> > On Fri, Aug 19, 2016 at 05:45:18PM +0530, Pankaj Gupta wrote: > > While debugging issue in realtime kernel i found a scenario > > which resulted in infinite loop resulting because of empty pcp->lists > > and valid 'to_free' value. This patch is to add 'WARN_ON' in function > > 'free_pcppages_bulk' if there is possibility of infinite loop because > > of any bug in code. > > > > What was the bug that allowed this situation to occur? It would imply > the pcp count was somehow out of sync.
Yes pcp count was out of sync. It was a bug in the downstream code. > > -- > Mel Gorman > SUSE Labs >
