On Tue, Nov 27, 2018 at 02:19:16PM +0100, Michal Hocko wrote: > On Tue 27-11-18 09:36:03, Heiko Carstens wrote: > > Use pr_alert_once() instead of pr_alert() if page table misaccounting > > has been detected. > > > > If this happens once it is very likely that there will be numerous > > other occurrence as well, which would flood dmesg and the console with > > hardly any added information. Therefore print the warning only once. > > Have you actually experience a flood of these messages? Is one per mm > message really that much? Yes, I did. Since in this case all compat processes caused the message to appear, I saw thousands of these messages. > If yes why rss counters do not exhibit the same problem? No rss counter messages appeared. Or do you suggest that the other pr_alert() within check_mm() should also be changed?
